pg_curl.c

#include <postgres.h>

#include <lib/stringinfo.h>
#include <miscadmin.h>
#include <utils/builtins.h>
#include <utils/guc.h>
#include <utils/hsearch.h>
#include <utils/memutils.h>

#include <curl/curl.h>

#include "pg_whitelist.h"

/* pg_fallthrough only exists in PostgreSQL 19+ headers */
#ifndef pg_fallthrough
#if defined(__has_attribute)
#if __has_attribute(fallthrough)
#define pg_fallthrough __attribute__((fallthrough))
#endif
#endif
#ifndef pg_fallthrough
#define pg_fallthrough
#endif
#endif

#define EXTENSION(function) Datum (function)(PG_FUNCTION_ARGS); PG_FUNCTION_INFO_V1(function); Datum (function)(PG_FUNCTION_ARGS)

PG_MODULE_MAGIC;

/* pg_whitelist's "privileged" caller is a superuser; anyone else must be
 * granted access explicitly via pg_curl.whitelist. */
static bool pg_curl_privileged(void) {
    return superuser();
}

/* pg_curl.whitelist does not apply at all: a privileged caller with no
 * whitelist configured. */
static bool pg_curl_unrestricted_for(bool privileged) {
    const char *whitelist = GetConfigOption("pg_curl.whitelist", true, false);
    return privileged && (!whitelist || !whitelist[0]);
}

static bool pg_curl_unrestricted(void) {
    return pg_curl_unrestricted_for(pg_curl_privileged());
}

/* For options pg_curl.whitelist has no way to scope, so a role it applies to
 * can't use them at all. */
static void pg_curl_whitelist_deny_option(const char *function) {
    ereport(ERROR, (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE), errmsg("permission denied for %s", function), errdetail("%s is not available while pg_curl.whitelist applies to the current role.", function)));
}

/* Check a local path curl will open against pg_curl.whitelist.
 * pg_whitelist waves through anything it takes for a URL ("http:", "https:"
 * or "//"), but here it is always a path ("//etc" is just "/etc", a relative
 * one resolves against the data directory), so classify it by an empty
 * fileurl it can't mistake for one. */
static void pg_curl_check_local_for(const char *path, bool privileged) {
    if (!pg_whitelist_allows_local("", path, privileged)) pg_whitelist_deny(path);
}

static void pg_curl_check_local(const char *path) {
    pg_curl_check_local_for(path, pg_curl_privileged());
}

/* Which request body pg_curl_easy_prepare() last put on the easy handle. */
typedef enum {
    PG_CURL_BODY_NONE,
    PG_CURL_BODY_POSTFIELD,
    PG_CURL_BODY_READDATA
} pg_curl_body_t;

typedef struct {
    char errbuf[CURL_ERROR_SIZE];
    CURLcode errcode;
    CURL *easy;
    CURLM *multi;
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    curl_mime *mime;
#endif
    int try;
    StringInfoData data_in;
    StringInfoData data_out;
    StringInfoData debug;
    StringInfoData header_in;
    StringInfoData header_out;
    StringInfoData postfield;
    StringInfoData readdata;
    StringInfoData url;
    pg_curl_body_t body;
    /* pg_curl_privileged() as of pg_curl_easy_prepare(), for the whitelist
     * checks libcurl callbacks make: superuser() may look up the catalog,
     * which has no business happening inside libcurl */
    bool privileged;
    ErrorData *callback_error;
    struct curl_slist *header;
    struct curl_slist *postquote;
    struct curl_slist *prequote;
    struct curl_slist *quote;
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    struct curl_slist *recipient;
#endif
} pg_curl_t;

typedef struct {
    char conname[NAMEDATALEN]; // always first, because it is key for hashmap
    pg_curl_t *curl;
} pg_curl_hash_t;

static struct {
    bool transaction;
    CURLM *multi;
    HTAB *hash;
    MemoryContext context;
} pg_curl = {
    .transaction = true,
};

static int pg_curl_ec(CURLcode ec) {
    if (ec < 10) return errcode(MAKE_SQLSTATE('E','C','0','0','0'+ec));
    if (ec < 100) return errcode(MAKE_SQLSTATE('E','C','0','0'+ec/10,'0'+ec%10));
    if (ec < 1000) return errcode(MAKE_SQLSTATE('E','C','0'+ec/100,'0'+(ec%100)/10,'0'+(ec%100)%10));
    return errcode(MAKE_SQLSTATE('E','C','0','0','0'));
}

static int pg_curl_mc(CURLMcode mc) {
    if (mc < 10) return errcode(MAKE_SQLSTATE('M','C','0','0','0'+mc));
    if (mc < 100) return errcode(MAKE_SQLSTATE('M','C','0','0'+mc/10,'0'+mc%10));
    if (mc < 1000) return errcode(MAKE_SQLSTATE('M','C','0'+mc/100,'0'+(mc%100)/10,'0'+(mc%100)%10));
    return errcode(MAKE_SQLSTATE('M','C','0','0','0'));
}

static void pg_curl_check_crlf(const char *str, const char *what) {
    if (strpbrk(str, "\r\n")) ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("%s must not contain CR or LF characters", what)));
}

#if PG_VERSION_NUM >= 90500
static void pg_curl_global_cleanup(void *arg) {
#if CURL_AT_LEAST_VERSION(7, 8, 0)
    curl_global_cleanup();
#endif
    pg_curl.context = NULL;
    pg_curl.hash = NULL;
}
#endif

static void pg_curl_multi_remove_handle(pg_curl_t *curl, bool raise_error) {
    CURLMcode mc;
    if (curl->multi && (mc = curl_multi_remove_handle(curl->multi, curl->easy)) != CURLM_OK && raise_error) ereport(ERROR, (pg_curl_mc(mc), errmsg("%s", curl_multi_strerror(mc))));
    curl->multi = NULL;
}

#if PG_VERSION_NUM >= 90500
static void pg_curl_easy_cleanup(void *arg) {
    pg_curl_t *curl = arg;
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    curl_mime_free(curl->mime);
#endif
    curl_slist_free_all(curl->header);
    curl_slist_free_all(curl->postquote);
    curl_slist_free_all(curl->prequote);
    curl_slist_free_all(curl->quote);
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    curl_slist_free_all(curl->recipient);
#endif
    if (curl->easy) {
        pg_curl_multi_remove_handle(curl, false);
        curl_easy_cleanup(curl->easy);
    }
    pfree(curl);
}
#endif

static void pg_curl_global_init(void) {
#if PG_VERSION_NUM >= 90500
    MemoryContextCallback *callback;
#endif
    if (pg_curl.context) return;
#if PG_VERSION_NUM >= 90500
    pg_curl.context = pg_curl.transaction ? CurTransactionContext : TopMemoryContext;
#else
    pg_curl.context = TopMemoryContext;
#endif
#if PG_VERSION_NUM >= 90500
    callback = MemoryContextAlloc(pg_curl.context, sizeof(*callback));
    callback->func = pg_curl_global_cleanup;
    MemoryContextRegisterResetCallback(pg_curl.context, callback);
#endif
#if CURL_AT_LEAST_VERSION(7, 8, 0)
    if (curl_global_init(CURL_GLOBAL_ALL)) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("curl_global_init")));
#endif
#if PG_VERSION_NUM >= 140000
    pg_curl.hash = hash_create("Connection name hash", 1, &(HASHCTL){.keysize = NAMEDATALEN, .entrysize = sizeof(pg_curl_hash_t), .hcxt = pg_curl.context}, HASH_CONTEXT | HASH_ELEM | HASH_STRINGS);
#else
    pg_curl.hash = hash_create("Connection name hash", 1, &(HASHCTL){.keysize = NAMEDATALEN, .entrysize = sizeof(pg_curl_hash_t), .hcxt = pg_curl.context}, HASH_CONTEXT | HASH_ELEM);
#endif
}

#if PG_VERSION_NUM >= 90500
static void pg_curl_multi_cleanup(void *arg) {
    if (!pg_curl.multi) return;
    curl_multi_cleanup(pg_curl.multi);
    pg_curl.multi = NULL;
}
#endif

static void pg_curl_multi_init(void) {
#if PG_VERSION_NUM >= 90500
    MemoryContextCallback *callback;
#endif
    if (pg_curl.multi) return;
    pg_curl_global_init();
#if PG_VERSION_NUM >= 90500
    callback = MemoryContextAlloc(pg_curl.context, sizeof(*callback));
    callback->func = pg_curl_multi_cleanup;
    MemoryContextRegisterResetCallback(pg_curl.context, callback);
#endif
    if (!(pg_curl.multi = curl_multi_init())) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_multi_init")));
}

static pg_curl_t *pg_curl_easy_init(const char *conname) {
    bool found;
#if PG_VERSION_NUM >= 90500
    MemoryContextCallback *callback;
#endif
    MemoryContext oldMemoryContext;
    pg_curl_t *curl;
    pg_curl_hash_t *hash;
    pg_curl_multi_init();
    hash = hash_search(pg_curl.hash, conname, HASH_ENTER, &found);
    if (!found) hash->curl = MemoryContextAllocZero(pg_curl.context, sizeof(*hash->curl));
    curl = hash->curl;
    if (curl->easy) return curl;
    oldMemoryContext = MemoryContextSwitchTo(pg_curl.context);
    initStringInfo(&curl->data_in);
    initStringInfo(&curl->data_out);
    initStringInfo(&curl->debug);
    initStringInfo(&curl->header_in);
    initStringInfo(&curl->header_out);
    initStringInfo(&curl->postfield);
    initStringInfo(&curl->readdata);
    initStringInfo(&curl->url);
    MemoryContextSwitchTo(oldMemoryContext);
    curl->errcode = CURL_LAST;
#if PG_VERSION_NUM >= 90500
    callback = MemoryContextAlloc(pg_curl.context, sizeof(*callback));
    callback->arg = curl;
    callback->func = pg_curl_easy_cleanup;
    MemoryContextRegisterResetCallback(pg_curl.context, callback);
#endif
    if (!(curl->easy = curl_easy_init())) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_easy_init")));
    return curl;
}

#define PG_CONNAME(arg) (PG_NARGS() < arg + 1 || PG_ARGISNULL(arg)) ? "unknown" : NameStr(*PG_GETARG_NAME(arg))

/* libcurl does not copy slist options, so detach the list from the easy
 * handle before freeing it -- pg_curl_easy_prepare() only re-sets the option
 * while the list is non-empty, so otherwise the next perform would walk
 * freed memory. */
static void pg_curl_easy_slist_reset(pg_curl_t *curl, CURLoption option, struct curl_slist **slist) {
    CURLcode ec;
    if ((ec = curl_easy_setopt(curl->easy, option, (struct curl_slist *)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    curl_slist_free_all(*slist);
    *slist = NULL;
}

EXTENSION(pg_curl_easy_header_reset) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_easy_slist_reset(curl, CURLOPT_HTTPHEADER, &curl->header);
    PG_RETURN_BOOL(true);
}

EXTENSION(pg_curl_easy_mime_reset) {
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    curl_mime_free(curl->mime);
    curl->mime = NULL;
    PG_RETURN_BOOL(true);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_mime_reset requires curl 7.56.0 or later")));
#endif
}

EXTENSION(pg_curl_easy_postquote_reset) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_easy_slist_reset(curl, CURLOPT_POSTQUOTE, &curl->postquote);
    PG_RETURN_BOOL(true);
}

EXTENSION(pg_curl_easy_prequote_reset) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_easy_slist_reset(curl, CURLOPT_PREQUOTE, &curl->prequote);
    PG_RETURN_BOOL(true);
}

EXTENSION(pg_curl_easy_quote_reset) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_easy_slist_reset(curl, CURLOPT_QUOTE, &curl->quote);
    PG_RETURN_BOOL(true);
}

EXTENSION(pg_curl_easy_recipient_reset) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_easy_slist_reset(curl, CURLOPT_MAIL_RCPT, &curl->recipient);
    PG_RETURN_BOOL(true);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_recipient_reset requires curl 7.20.0 or later")));
#endif
}

EXTENSION(pg_curl_easy_reset) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    curl->errbuf[0] = '\0';
    curl->errcode = CURL_LAST;
    pg_curl_easy_header_reset(fcinfo);
    pg_curl_easy_postquote_reset(fcinfo);
    pg_curl_easy_prequote_reset(fcinfo);
    pg_curl_easy_quote_reset(fcinfo);
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    pg_curl_easy_mime_reset(fcinfo);
#endif
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    pg_curl_easy_recipient_reset(fcinfo);
#endif
#if CURL_AT_LEAST_VERSION(7, 12, 1)
    curl_easy_reset(curl->easy);
#endif
    resetStringInfo(&curl->data_in);
    resetStringInfo(&curl->data_out);
    resetStringInfo(&curl->debug);
    resetStringInfo(&curl->header_in);
    resetStringInfo(&curl->header_out);
    resetStringInfo(&curl->postfield);
    resetStringInfo(&curl->readdata);
    resetStringInfo(&curl->url);
    curl->body = PG_CURL_BODY_NONE;
    pg_curl_multi_remove_handle(curl, true);
    PG_RETURN_BOOL(true);
}

EXTENSION(pg_curl_easy_escape) {
#if CURL_AT_LEAST_VERSION(7, 15, 4)
    text *string;
    char *escape;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_escape requires argument string")));
    string = PG_GETARG_TEXT_PP(0);
    if (!(escape = curl_easy_escape(curl->easy, VARDATA_ANY(string), VARSIZE_ANY_EXHDR(string)))) PG_RETURN_NULL();
    PG_FREE_IF_COPY(string, 0);
    string = cstring_to_text(escape);
    curl_free(escape);
    PG_RETURN_TEXT_P(string);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_escape requires curl 7.15.4 or later")));
#endif
}

EXTENSION(pg_curl_easy_unescape) {
#if CURL_AT_LEAST_VERSION(7, 15, 4)
    text *url;
    char *unescape;
    int outlength;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_unescape requires argument url")));
    url = PG_GETARG_TEXT_PP(0);
    if (!(unescape = curl_easy_unescape(curl->easy, VARDATA_ANY(url), VARSIZE_ANY_EXHDR(url), &outlength))) PG_RETURN_NULL();
    PG_FREE_IF_COPY(url, 0);
    url = cstring_to_text_with_len(unescape, outlength);
    curl_free(unescape);
    PG_RETURN_TEXT_P(url);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_unescape requires curl 7.15.4 or later")));
#endif
}

EXTENSION(pg_curl_header_append) {
    char *name, *value;
    StringInfoData buf;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(2));
    struct curl_slist *temp = curl->header;
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_header_append requires argument name")));
    name = TextDatumGetCString(PG_GETARG_DATUM(0));
    if (PG_ARGISNULL(1)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_header_append requires argument value")));
    value = TextDatumGetCString(PG_GETARG_DATUM(1));
    pg_curl_check_crlf(name, "curl_header_append name");
    pg_curl_check_crlf(value, "curl_header_append value");
    initStringInfo(&buf);
    appendStringInfo(&buf, "%s: %s", name, value);
    if ((temp = curl_slist_append(temp, buf.data))) curl->header = temp; else ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_slist_append")));
    pfree(name);
    pfree(value);
    pfree(buf.data);
    PG_RETURN_BOOL(temp != NULL);
}

EXTENSION(pg_curl_postquote_append) {
    char *command;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    struct curl_slist *temp = curl->postquote;
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_postquote_append requires argument command")));
    command = TextDatumGetCString(PG_GETARG_DATUM(0));
    pg_curl_check_crlf(command, "curl_postquote_append command");
    if ((temp = curl_slist_append(temp, command))) curl->postquote = temp; else ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_slist_append")));
    pfree(command);
    PG_RETURN_BOOL(temp != NULL);
}

EXTENSION(pg_curl_prequote_append) {
    char *command;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    struct curl_slist *temp = curl->prequote;
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_prequote_append requires argument command")));
    command = TextDatumGetCString(PG_GETARG_DATUM(0));
    pg_curl_check_crlf(command, "curl_prequote_append command");
    if ((temp = curl_slist_append(temp, command))) curl->prequote = temp; else ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_slist_append")));
    pfree(command);
    PG_RETURN_BOOL(temp != NULL);
}

EXTENSION(pg_curl_quote_append) {
    char *command;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    struct curl_slist *temp = curl->quote;
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_quote_append requires argument command")));
    command = TextDatumGetCString(PG_GETARG_DATUM(0));
    pg_curl_check_crlf(command, "curl_quote_append command");
    if ((temp = curl_slist_append(temp, command))) curl->quote = temp; else ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_slist_append")));
    pfree(command);
    PG_RETURN_BOOL(temp != NULL);
}

EXTENSION(pg_curl_recipient_append) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    char *email;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    struct curl_slist *temp = curl->recipient;
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_recipient_append requires argument email")));
    email = TextDatumGetCString(PG_GETARG_DATUM(0));
    pg_curl_check_crlf(email, "curl_recipient_append email");
    if ((temp = curl_slist_append(temp, email))) curl->recipient = temp; else ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_slist_append")));
    pfree(email);
    PG_RETURN_BOOL(temp != NULL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_recipient_append requires curl 7.20.0 or later")));
#endif
}

static Datum pg_curl_mime_data_or_file(PG_FUNCTION_ARGS, curl_mimepart *part) {
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    char *name = NULL, *file = NULL, *type = NULL, *code = NULL, *head = NULL;
    CURLcode ec = CURL_LAST;
    if (!PG_ARGISNULL(1)) name = TextDatumGetCString(PG_GETARG_DATUM(1));
    if (!PG_ARGISNULL(2)) file = TextDatumGetCString(PG_GETARG_DATUM(2));
    if (!PG_ARGISNULL(3)) type = TextDatumGetCString(PG_GETARG_DATUM(3));
    if (!PG_ARGISNULL(4)) code = TextDatumGetCString(PG_GETARG_DATUM(4));
    if (!PG_ARGISNULL(5)) head = TextDatumGetCString(PG_GETARG_DATUM(5));
    /* name/file/type/head all end up in the part's header lines */
    if (name) pg_curl_check_crlf(name, "curl_mime_* name");
    if (file) pg_curl_check_crlf(file, "curl_mime_* file");
    if (type) pg_curl_check_crlf(type, "curl_mime_* type");
    if (head) pg_curl_check_crlf(head, "curl_mime_* head");
    if (name && ((ec = curl_mime_name(part, name)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    if (file && ((ec = curl_mime_filename(part, file)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    if (type && ((ec = curl_mime_type(part, type)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    if (code && ((ec = curl_mime_encoder(part, code)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    if (head) {
        struct curl_slist *headers = NULL;
        if (!(headers = curl_slist_append(headers, head))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_slist_append")));
        if ((ec = curl_mime_headers(part, headers, true)) != CURLE_OK) {
            curl_slist_free_all(headers);
            ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
        }
    }
    if (name) pfree(name);
    if (file) pfree(file);
    if (type) pfree(type);
    if (code) pfree(code);
    if (head) pfree(head);
    PG_RETURN_BOOL(true);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_mime_data requires curl 7.56.0 or later")));
#endif
}

EXTENSION(pg_curl_mime_data_text) {
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    CURLcode ec = CURL_LAST;
    curl_mimepart *part;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(6));
    if (!curl->mime && !(curl->mime = curl_mime_init(curl->easy))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_mime_init")));
    if (!(part = curl_mime_addpart(curl->mime))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_mime_addpart")));
    if (!PG_ARGISNULL(0)) {
        text *data = PG_GETARG_TEXT_PP(0);
        if ((ec = curl_mime_data(part, VARDATA_ANY(data), VARSIZE_ANY_EXHDR(data))) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
        PG_FREE_IF_COPY(data, 0);
    }
    return pg_curl_mime_data_or_file(fcinfo, part);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_mime_data requires curl 7.56.0 or later")));
#endif
}

EXTENSION(pg_curl_mime_data_bytea) {
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    CURLcode ec = CURL_LAST;
    curl_mimepart *part;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(6));
    if (!curl->mime && !(curl->mime = curl_mime_init(curl->easy))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_mime_init")));
    if (!(part = curl_mime_addpart(curl->mime))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_mime_addpart")));
    if (!PG_ARGISNULL(0)) {
        bytea *data = PG_GETARG_BYTEA_PP(0);
        if ((ec = curl_mime_data(part, VARDATA_ANY(data), VARSIZE_ANY_EXHDR(data))) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
        PG_FREE_IF_COPY(data, 0);
    }
    return pg_curl_mime_data_or_file(fcinfo, part);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_mime_data requires curl 7.56.0 or later")));
#endif
}

EXTENSION(pg_curl_mime_file) {
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    CURLcode ec = CURL_LAST;
    curl_mimepart *part;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(6));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_mime_file requires argument data")));
    if (!curl->mime && !(curl->mime = curl_mime_init(curl->easy))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_mime_init")));
    if (!(part = curl_mime_addpart(curl->mime))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_mime_addpart")));
    if (!PG_ARGISNULL(0)) {
        char *data = TextDatumGetCString(PG_GETARG_DATUM(0));
        pg_curl_check_local(data);
        if ((ec = curl_mime_filedata(part, data)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
        pfree(data);
    }
    return pg_curl_mime_data_or_file(fcinfo, part);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_mime_file requires curl 7.56.0 or later")));
#endif
}

EXTENSION(pg_curl_easy_setopt_postfields) {
    bytea *parameter;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_setopt_postfields requires argument parameter")));
    parameter = PG_GETARG_BYTEA_PP(0);
    resetStringInfo(&curl->postfield);
    resetStringInfo(&curl->readdata);
    appendBinaryStringInfo(&curl->postfield, VARDATA_ANY(parameter), VARSIZE_ANY_EXHDR(parameter));
    PG_FREE_IF_COPY(parameter, 0);
    PG_RETURN_BOOL(true);
}

EXTENSION(pg_curl_easy_setopt_readdata) {
    bytea *parameter;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_setopt_readdata requires argument parameter")));
    parameter = PG_GETARG_BYTEA_PP(0);
    resetStringInfo(&curl->postfield);
    resetStringInfo(&curl->readdata);
    appendBinaryStringInfo(&curl->readdata, VARDATA_ANY(parameter), VARSIZE_ANY_EXHDR(parameter));
    PG_FREE_IF_COPY(parameter, 0);
    PG_RETURN_BOOL(true);
}

EXTENSION(pg_curl_easy_setopt_url) {
    text *parameter;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_setopt_url requires argument parameter")));
    parameter = PG_GETARG_TEXT_PP(0);
    resetStringInfo(&curl->url);
    appendBinaryStringInfo(&curl->url, VARDATA_ANY(parameter), VARSIZE_ANY_EXHDR(parameter));
    PG_FREE_IF_COPY(parameter, 0);
    PG_RETURN_BOOL(true);
}

static Datum pg_curl_postfield_or_url_append(PG_FUNCTION_ARGS, pg_curl_t *curl, StringInfoData *buf) {
    char *escape;
    CURLcode ec = CURLE_OK;
    text *name = PG_GETARG_TEXT_PP(0);
    if (buf->len && buf->data[buf->len - 1] != '?') appendStringInfoChar(buf, '&');
    if (!(escape = curl_easy_escape(curl->easy, VARDATA_ANY(name), VARSIZE_ANY_EXHDR(name)))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("curl_easy_escape failed")));
    appendStringInfoString(buf, escape);
    curl_free(escape);
    PG_FREE_IF_COPY(name, 0);
    if (!PG_ARGISNULL(1)) {
        text *value = PG_GETARG_TEXT_PP(1);
        appendStringInfoChar(buf, '=');
        if (VARSIZE_ANY_EXHDR(value)) {
            if (!(escape = curl_easy_escape(curl->easy, VARDATA_ANY(value), VARSIZE_ANY_EXHDR(value)))) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("curl_easy_escape failed")));
            appendStringInfoString(buf, escape);
            curl_free(escape);
        }
        PG_FREE_IF_COPY(value, 1);
    }
    PG_RETURN_BOOL(ec == CURLE_OK);
}

EXTENSION(pg_curl_postfield_append) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(2));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("pg_curl_postfield_append requires argument name")));
    resetStringInfo(&curl->readdata);
    return pg_curl_postfield_or_url_append(fcinfo, curl, &curl->postfield);
}

EXTENSION(pg_curl_url_append) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(2));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("pg_curl_url_append requires argument name")));
    return pg_curl_postfield_or_url_append(fcinfo, curl, &curl->url);
}

#if CURL_AT_LEAST_VERSION(7, 71, 0)
static Datum pg_curl_easy_setopt_blob(PG_FUNCTION_ARGS, CURLoption option) {
    CURLcode ec = CURLE_OK;
    bytea *parameter;
    struct curl_blob blob;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_setopt_* requires argument parameter")));
    parameter = PG_GETARG_BYTEA_PP(0);
    blob.data = VARDATA_ANY(parameter);
    blob.flags = CURL_BLOB_COPY;
    blob.len = VARSIZE_ANY_EXHDR(parameter);
    if ((ec = curl_easy_setopt(curl->easy, option, &blob)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    PG_FREE_IF_COPY(parameter, 0);
    PG_RETURN_BOOL(ec == CURLE_OK);
}
#endif

static Datum pg_curl_easy_setopt_char(PG_FUNCTION_ARGS, CURLoption option) {
    CURLcode ec = CURL_LAST;
    char *parameter;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_setopt_* requires argument parameter")));
    parameter = TextDatumGetCString(PG_GETARG_DATUM(0));
    if ((ec = curl_easy_setopt(curl->easy, option, parameter)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    pfree(parameter);
    PG_RETURN_BOOL(ec == CURLE_OK);
}

/* Like pg_curl_easy_setopt_char(), for options whose parameter is a local
 * file path that curl reads from disk (rather than a value curl merely
 * transmits), so it is checked against pg_curl.whitelist first. */
static Datum pg_curl_easy_setopt_localfile(PG_FUNCTION_ARGS, CURLoption option) {
    CURLcode ec = CURL_LAST;
    char *parameter;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_setopt_* requires argument parameter")));
    parameter = TextDatumGetCString(PG_GETARG_DATUM(0));
    pg_curl_check_local(parameter);
    if ((ec = curl_easy_setopt(curl->easy, option, parameter)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    pfree(parameter);
    PG_RETURN_BOOL(ec == CURLE_OK);
}

/* A pinned public key is either "sha256//" hashes, which curl only compares,
 * or the path of a key file, which curl reads from disk. */
static Datum pg_curl_easy_setopt_pinned(PG_FUNCTION_ARGS, CURLoption option) {
    char *parameter;
    bool hashes;
    if (PG_ARGISNULL(0)) return pg_curl_easy_setopt_localfile(fcinfo, option);
    parameter = TextDatumGetCString(PG_GETARG_DATUM(0));
    hashes = !strncmp(parameter, "sha256//", 8);
    pfree(parameter);
    return hashes ? pg_curl_easy_setopt_char(fcinfo, option) : pg_curl_easy_setopt_localfile(fcinfo, option);
}

/* libcurl callbacks must not ereport(ERROR): longjmp'ing out of one leaves
 * libcurl believing it is still inside the callback, so every later call on
 * the multi handle fails with "API function called from within callback".
 * So an error while appending (e.g. a response over the 1 GB StringInfo
 * limit, or out of memory) is caught and stashed here instead, the callback
 * fails the transfer, and pg_curl_multi_perform() re-throws it once libcurl
 * is done with the transfer. */
static bool pg_curl_append(pg_curl_t *curl, StringInfo si, const char *data, size_t size) {
    MemoryContext oldcontext = CurrentMemoryContext;
    volatile bool ok = true;
    if (curl->callback_error) return false;
    PG_TRY();
    {
        appendBinaryStringInfo(si, data, size);
    }
    PG_CATCH();
    {
        MemoryContextSwitchTo(pg_curl.context);
        curl->callback_error = CopyErrorData();
        FlushErrorState();
        MemoryContextSwitchTo(oldcontext);
        ok = false;
    }
    PG_END_TRY();
    return ok;
}

/* must return 0 whatever happens, so a failed append just stops recording;
 * pg_write_callback()/pg_header_callback() then fail the transfer */
static int pg_debug_callback(CURL *handle, curl_infotype type, char *data, size_t size, void *userptr) {
    pg_curl_t *curl = userptr;
    if (size) switch (type) {
        case CURLINFO_DATA_OUT: pg_curl_append(curl, &curl->data_out, data, size); break;
        case CURLINFO_HEADER_IN: fwrite("< ", sizeof("< ") - 1, 1, stderr); fwrite(data, size, 1, stderr); break;
        case CURLINFO_HEADER_OUT: fwrite("> ", sizeof("> ") - 1, 1, stderr); fwrite(data, size, 1, stderr); pg_curl_append(curl, &curl->header_out, data, size); break;
        case CURLINFO_TEXT: fwrite("* ", sizeof("* ") - 1, 1, stderr); fwrite(data, size, 1, stderr); pg_curl_append(curl, &curl->debug, data, size); break;
        default: break;
    }
    return 0;
}

EXTENSION(pg_curl_easy_setopt_abstract_unix_socket) {
#if CURL_AT_LEAST_VERSION(7, 53, 0)
    /* an abstract socket has no path on disk that pg_curl.whitelist could list */
    if (!PG_ARGISNULL(0) && !pg_curl_unrestricted()) pg_whitelist_deny(TextDatumGetCString(PG_GETARG_DATUM(0)));
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_ABSTRACT_UNIX_SOCKET);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_abstract_unix_socket requires curl 7.53.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_accept_encoding) {
#if CURL_AT_LEAST_VERSION(7, 21, 6)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_ACCEPT_ENCODING);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_accept_encoding requires curl 7.21.6 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_cainfo_blob) {
#if CURL_AT_LEAST_VERSION(7, 77, 0)
    return pg_curl_easy_setopt_blob(fcinfo, CURLOPT_CAINFO_BLOB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_cainfo_blob requires curl 7.77.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_cainfo) {
#if CURL_AT_LEAST_VERSION(7, 60, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_CAINFO);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_cainfo requires curl 7.60.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_capath) {
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_CAPATH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_capath requires curl 7.56.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_cookiefile) { return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_COOKIEFILE); }
EXTENSION(pg_curl_easy_setopt_cookiejar) { return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_COOKIEJAR); }
EXTENSION(pg_curl_easy_setopt_cookielist) {
#if CURL_AT_LEAST_VERSION(7, 14, 1)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_COOKIELIST);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_cookielist requires curl 7.14.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_cookie) { return pg_curl_easy_setopt_char(fcinfo, CURLOPT_COOKIE); }
EXTENSION(pg_curl_easy_setopt_crlfile) {
#if CURL_AT_LEAST_VERSION(7, 19, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_CRLFILE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_crlfile requires curl 7.19.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_customrequest) {
#if CURL_AT_LEAST_VERSION(7, 26, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_CUSTOMREQUEST);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_customrequest requires curl 7.26.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_default_protocol) {
#if CURL_AT_LEAST_VERSION(7, 45, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_DEFAULT_PROTOCOL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_default_protocol requires curl 7.45.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_dns_interface) {
#if CURL_AT_LEAST_VERSION(7, 33, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_DNS_INTERFACE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_dns_interface requires curl 7.33.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_dns_local_ip4) {
#if CURL_AT_LEAST_VERSION(7, 33, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_DNS_LOCAL_IP4);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_dns_local_ip4 requires curl 7.33.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_dns_local_ip6) {
#if CURL_AT_LEAST_VERSION(7, 33, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_DNS_LOCAL_IP6);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_dns_local_ip6 requires curl 7.33.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_dns_servers) {
#if CURL_AT_LEAST_VERSION(7, 24, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_DNS_SERVERS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("url_easy_setopt_dns_servers requires curl 7.24.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_doh_url) {
#if CURL_AT_LEAST_VERSION(7, 62, 0)
    /* a host curl connects to on its own, never checked against the whitelist */
    if (!PG_ARGISNULL(0) && !pg_curl_unrestricted()) pg_curl_whitelist_deny_option("curl_easy_setopt_doh_url");
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_DOH_URL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_doh_url requires curl 7.62.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_egdsocket) {
#if CURL_AT_LEAST_VERSION(7, 84, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_egdsocket deprecated: since 7.84.0. Serves no purpose anymore")));
#else
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_EGDSOCKET);
#endif
}
EXTENSION(pg_curl_easy_setopt_ftp_account) {
#if CURL_AT_LEAST_VERSION(7, 13, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_FTP_ACCOUNT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftp_account requires curl 7.13.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ftp_alternative_to_user) {
#if CURL_AT_LEAST_VERSION(7, 15, 5)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_FTP_ALTERNATIVE_TO_USER);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftp_alternative_to_user requires curl 7.15.5 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ftpport) {
#if CURL_AT_LEAST_VERSION(7, 19, 5)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_FTPPORT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftpport requires curl 7.19.5 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_interface) {
#if CURL_AT_LEAST_VERSION(7, 24, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_INTERFACE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_interface requires curl 7.24.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_issuercert_blob) {
#if CURL_AT_LEAST_VERSION(7, 71, 0)
    return pg_curl_easy_setopt_blob(fcinfo, CURLOPT_ISSUERCERT_BLOB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_issuercert_blob requires curl 7.71.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_issuercert) { return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_ISSUERCERT); }
EXTENSION(pg_curl_easy_setopt_keypasswd) {
#if CURL_AT_LEAST_VERSION(7, 16, 5)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_KEYPASSWD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_keypasswd requires curl 7.16.5 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_krblevel) {
#if CURL_AT_LEAST_VERSION(8, 17, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_krblevel deprecated: since 8.17.0. removed")));
#elif CURL_AT_LEAST_VERSION(7, 16, 4)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_KRBLEVEL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_krblevel requires curl 7.16.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_login_options) {
#if CURL_AT_LEAST_VERSION(7, 34, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_LOGIN_OPTIONS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_login_options requires curl 7.34.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_mail_auth) {
#if CURL_AT_LEAST_VERSION(7, 25, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_MAIL_AUTH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_mail_auth requires curl 7.25.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_mail_from) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_MAIL_FROM);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_mail_from requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_noproxy) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_NOPROXY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_noproxy requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_password) {
#if CURL_AT_LEAST_VERSION(7, 19, 1)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PASSWORD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_password requires curl 7.19.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_pinnedpublickey) {
#if CURL_AT_LEAST_VERSION(7, 39, 0)
    return pg_curl_easy_setopt_pinned(fcinfo, CURLOPT_PINNEDPUBLICKEY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_pinnedpublickey requires curl 7.39.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_pre_proxy) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    /* a host curl connects to on its own, never checked against the whitelist */
    if (!PG_ARGISNULL(0) && !pg_curl_unrestricted()) pg_curl_whitelist_deny_option("curl_easy_setopt_pre_proxy");
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PRE_PROXY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_pre_proxy requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_protocols_str) {
#if CURL_AT_LEAST_VERSION(7, 85, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROTOCOLS_STR);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_protocols_str requires curl 7.85.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_cainfo_blob) {
#if CURL_AT_LEAST_VERSION(7, 77, 0)
    return pg_curl_easy_setopt_blob(fcinfo, CURLOPT_PROXY_CAINFO_BLOB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_cainfo_blob requires curl 7.77.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_cainfo) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_PROXY_CAINFO);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_cainfo requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_capath) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_PROXY_CAPATH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_capath requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_crlfile) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_PROXY_CRLFILE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_crlfile requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_issuercert_blob) {
#if CURL_AT_LEAST_VERSION(7, 71, 0)
    return pg_curl_easy_setopt_blob(fcinfo, CURLOPT_PROXY_ISSUERCERT_BLOB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_issuercert_blob requires curl 7.71.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_issuercert) {
#if CURL_AT_LEAST_VERSION(7, 71, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_PROXY_ISSUERCERT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_issuercert requires curl 7.71.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_keypasswd) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_KEYPASSWD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_keypasswd requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxypassword) {
#if CURL_AT_LEAST_VERSION(7, 19, 1)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXYPASSWORD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxypassword requires curl 7.19.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_pinnedpublickey) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_pinned(fcinfo, CURLOPT_PROXY_PINNEDPUBLICKEY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_pinnedpublickey requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_service_name) {
#if CURL_AT_LEAST_VERSION(7, 43, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_SERVICE_NAME);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_service_name requires curl 7.43.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy) {
#if CURL_AT_LEAST_VERSION(7, 14, 1)
    /* a host curl connects to on its own, never checked against the whitelist */
    if (!PG_ARGISNULL(0) && !pg_curl_unrestricted()) pg_curl_whitelist_deny_option("curl_easy_setopt_proxy");
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy requires curl 7.14.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_sslcert_blob) {
#if CURL_AT_LEAST_VERSION(7, 71, 0)
    return pg_curl_easy_setopt_blob(fcinfo, CURLOPT_PROXY_SSLCERT_BLOB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_sslcert_blob requires curl 7.71.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_sslcert) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_PROXY_SSLCERT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_sslcert requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_sslcerttype) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_SSLCERTTYPE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_sslcerttype requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_ssl_cipher_list) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_SSL_CIPHER_LIST);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_ssl_cipher_list requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_sslkey_blob) {
#if CURL_AT_LEAST_VERSION(7, 71, 0)
    return pg_curl_easy_setopt_blob(fcinfo, CURLOPT_PROXY_SSLKEY_BLOB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_sslkey_blob requires curl 7.71.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_sslkey) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_PROXY_SSLKEY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_sslkey requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_sslkeytype) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_SSLKEYTYPE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_sslkeytype requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_tls13_ciphers) {
#if CURL_AT_LEAST_VERSION(7, 61, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_TLS13_CIPHERS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_tls13_ciphers requires curl 7.61.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_tlsauth_password) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_TLSAUTH_PASSWORD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_tlsauth_password requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_tlsauth_type) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_TLSAUTH_TYPE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_tlsauth_type requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_tlsauth_username) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXY_TLSAUTH_USERNAME);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_tlsauth_username requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxyusername) {
#if CURL_AT_LEAST_VERSION(7, 19, 1)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXYUSERNAME);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxyusername requires curl 7.19.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxyuserpwd) { return pg_curl_easy_setopt_char(fcinfo, CURLOPT_PROXYUSERPWD); }
EXTENSION(pg_curl_easy_setopt_random_file) {
#if CURL_AT_LEAST_VERSION(7, 84, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_random_file deprecated: since 7.84.0. Serves no purpose anymore")));
#else
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_RANDOM_FILE);
#endif
}
EXTENSION(pg_curl_easy_setopt_range) {
#if CURL_AT_LEAST_VERSION(7, 18, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_RANGE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_range requires curl 7.18.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_redir_protocols_str) {
#if CURL_AT_LEAST_VERSION(7, 85, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_REDIR_PROTOCOLS_STR);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_redir_protocols_str requires curl 7.85.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_referer) { return pg_curl_easy_setopt_char(fcinfo, CURLOPT_REFERER); }
EXTENSION(pg_curl_easy_setopt_request_target) {
#if CURL_AT_LEAST_VERSION(7, 55, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_REQUEST_TARGET);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_request_target requires curl 7.55.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_rtsp_session_id) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_RTSP_SESSION_ID);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_rtsp_session_id requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_rtsp_stream_uri) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_RTSP_STREAM_URI);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_rtsp_stream_uri requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_rtsp_transport) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_RTSP_TRANSPORT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_rtsp_transport requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_service_name) {
#if CURL_AT_LEAST_VERSION(7, 43, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_SERVICE_NAME);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_service_name requires curl 7.43.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_socks5_gssapi_service) {
#if CURL_AT_LEAST_VERSION(7, 49, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_socks5_gssapi_service deprecated: since 7.49.0. Use curl_easy_setopt_proxy_service_name")));
#elif CURL_AT_LEAST_VERSION(7, 19, 4)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_SOCKS5_GSSAPI_SERVICE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_socks5_gssapi_service requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssh_host_public_key_md5) {
#if CURL_AT_LEAST_VERSION(7, 17, 1)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_SSH_HOST_PUBLIC_KEY_MD5);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssh_host_public_key_md5 requires curl 7.17.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssh_knownhosts) {
#if CURL_AT_LEAST_VERSION(7, 19, 6)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_SSH_KNOWNHOSTS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssh_knownhosts requires curl 7.19.6 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssh_private_keyfile) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_SSH_PRIVATE_KEYFILE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssh_private_keyfile requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssh_public_keyfile) {
#if CURL_AT_LEAST_VERSION(7, 26, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_SSH_PUBLIC_KEYFILE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssh_public_keyfile requires curl 7.26.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_sslcert_blob) {
#if CURL_AT_LEAST_VERSION(7, 71, 10)
    return pg_curl_easy_setopt_blob(fcinfo, CURLOPT_SSLCERT_BLOB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_sslcert_blob requires curl 7.71.10 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_sslcert) { return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_SSLCERT); }
EXTENSION(pg_curl_easy_setopt_sslcerttype) {
#if CURL_AT_LEAST_VERSION(7, 9, 3)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_SSLCERTTYPE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_sslcerttype requires curl 7.9.3 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssl_cipher_list) { return pg_curl_easy_setopt_char(fcinfo, CURLOPT_SSL_CIPHER_LIST); }
EXTENSION(pg_curl_easy_setopt_sslengine) {
    /* an OpenSSL engine is a shared library OpenSSL may load into the backend */
    if (!pg_curl_unrestricted()) pg_curl_whitelist_deny_option("curl_easy_setopt_sslengine");
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_SSLENGINE);
}
EXTENSION(pg_curl_easy_setopt_sslkey_blob) {
#if CURL_AT_LEAST_VERSION(7, 71, 0)
    return pg_curl_easy_setopt_blob(fcinfo, CURLOPT_SSLKEY_BLOB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_sslkey_blob requires curl 7.71.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_sslkey) { return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_SSLKEY); }
EXTENSION(pg_curl_easy_setopt_sslkeytype) { return pg_curl_easy_setopt_char(fcinfo, CURLOPT_SSLKEYTYPE); }
EXTENSION(pg_curl_easy_setopt_tls13_ciphers) {
#if CURL_AT_LEAST_VERSION(7, 61, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_TLS13_CIPHERS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tls13_ciphers requires curl 7.61.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_tlsauth_password) {
#if CURL_AT_LEAST_VERSION(7, 21, 4)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_TLSAUTH_PASSWORD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tlsauth_password requires curl 7.21.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_tlsauth_type) {
#if CURL_AT_LEAST_VERSION(7, 21, 4)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_TLSAUTH_TYPE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tlsauth_type requires curl 7.21.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_tlsauth_username) {
#if CURL_AT_LEAST_VERSION(7, 21, 4)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_TLSAUTH_USERNAME);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tlsauth_username requires curl 7.21.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_unix_socket_path) {
#if CURL_AT_LEAST_VERSION(7, 40, 0)
    return pg_curl_easy_setopt_localfile(fcinfo, CURLOPT_UNIX_SOCKET_PATH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_unix_socket_path requires curl 7.40.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_useragent) { return pg_curl_easy_setopt_char(fcinfo, CURLOPT_USERAGENT); }
EXTENSION(pg_curl_easy_setopt_username) {
#if CURL_AT_LEAST_VERSION(7, 19, 1)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_USERNAME);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_username requires curl 7.19.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_userpwd) { return pg_curl_easy_setopt_char(fcinfo, CURLOPT_USERPWD); }
EXTENSION(pg_curl_easy_setopt_xoauth2_bearer) {
#if CURL_AT_LEAST_VERSION(7, 33, 0)
    return pg_curl_easy_setopt_char(fcinfo, CURLOPT_XOAUTH2_BEARER);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_xoauth2_bearer requires curl 7.33.0 or later")));
#endif
}

static Datum pg_curl_easy_setopt_long(PG_FUNCTION_ARGS, CURLoption option) {
    CURLcode ec = CURL_LAST;
    long parameter;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if (PG_ARGISNULL(0)) ereport(ERROR, (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED), errmsg("curl_easy_setopt_* requires argument parameter")));
    parameter = PG_GETARG_INT64(0);
    if ((ec = curl_easy_setopt(curl->easy, option, parameter)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    PG_RETURN_BOOL(ec == CURLE_OK);
}

EXTENSION(pg_curl_easy_setopt_accepttimeout_ms) {
#if CURL_AT_LEAST_VERSION(7, 24, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_ACCEPTTIMEOUT_MS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_accepttimeout_ms requires curl 7.24.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_address_scope) {
#if CURL_AT_LEAST_VERSION(7, 19, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_ADDRESS_SCOPE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_address_scope requires curl 7.19.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_append) {
#if CURL_AT_LEAST_VERSION(7, 16, 5)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_APPEND);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_append requires curl 7.16.5 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_autoreferer) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_AUTOREFERER); }
EXTENSION(pg_curl_easy_setopt_buffersize) {
#if CURL_AT_LEAST_VERSION(7, 10, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_BUFFERSIZE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_buffersize requires curl 7.10.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_certinfo) {
#if CURL_AT_LEAST_VERSION(7, 50, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_CERTINFO);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_certinfo requires curl 7.50.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_connect_only) {
#if CURL_AT_LEAST_VERSION(7, 15, 2)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_CONNECT_ONLY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_connect_only requires curl 7.15.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_connecttimeout_ms) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_CONNECTTIMEOUT_MS); }
EXTENSION(pg_curl_easy_setopt_connecttimeout) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_CONNECTTIMEOUT); }
EXTENSION(pg_curl_easy_setopt_cookiesession) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_COOKIESESSION); }
EXTENSION(pg_curl_easy_setopt_crlf) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_CRLF); }
EXTENSION(pg_curl_easy_setopt_dirlistonly) {
#if CURL_AT_LEAST_VERSION(7, 16, 5)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_DIRLISTONLY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_dirlistonly requires curl 7.16.5 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_disallow_username_in_url) {
#if CURL_AT_LEAST_VERSION(7, 61, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_DISALLOW_USERNAME_IN_URL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_disallow_username_in_url requires curl 7.61.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_dns_cache_timeout) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_DNS_CACHE_TIMEOUT); }
EXTENSION(pg_curl_easy_setopt_dns_shuffle_addresses) {
#if CURL_AT_LEAST_VERSION(7, 60, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_DNS_SHUFFLE_ADDRESSES);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_dns_shuffle_addresses requires curl 7.60.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_dns_use_global_cache) {
#if CURL_AT_LEAST_VERSION(7, 62, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_dns_use_global_cache deprecated: since 7.11.1. Use curl_easy_setopt_share")));
#else
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_DNS_USE_GLOBAL_CACHE);
#endif
}
EXTENSION(pg_curl_easy_setopt_expect_100_timeout_ms) {
#if CURL_AT_LEAST_VERSION(7, 36, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_EXPECT_100_TIMEOUT_MS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_expect_100_timeout_ms requires curl 7.36.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_failonerror) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FAILONERROR); }
EXTENSION(pg_curl_easy_setopt_filetime) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FILETIME); }
EXTENSION(pg_curl_easy_setopt_followlocation) {
#if !CURL_AT_LEAST_VERSION(7, 80, 0)
    /* without CURLOPT_PREREQFUNCTION only the request URL itself can be
     * checked against pg_curl.whitelist, so a redirect could lead anywhere */
    if (!PG_ARGISNULL(0) && PG_GETARG_INT64(0) != 0 && !pg_curl_unrestricted()) pg_curl_whitelist_deny_option("curl_easy_setopt_followlocation");
#endif
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FOLLOWLOCATION);
}
EXTENSION(pg_curl_easy_setopt_forbid_reuse) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FORBID_REUSE); }
EXTENSION(pg_curl_easy_setopt_fresh_connect) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FRESH_CONNECT); }
EXTENSION(pg_curl_easy_setopt_ftp_create_missing_dirs) {
#if CURL_AT_LEAST_VERSION(7, 10, 7)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FTP_CREATE_MISSING_DIRS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftp_create_missing_dirs requires curl 7.10.7 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ftp_filemethod) {
#if CURL_AT_LEAST_VERSION(7, 15, 1)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FTP_FILEMETHOD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftp_filemethod requires curl 7.15.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ftp_skip_pasv_ip) {
#if CURL_AT_LEAST_VERSION(7, 14, 2)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FTP_SKIP_PASV_IP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftp_skip_pasv_ip requires curl 7.14.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ftpsslauth) {
#if CURL_AT_LEAST_VERSION(7, 12, 2)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FTPSSLAUTH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftpsslauth requires curl 7.12.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ftp_ssl_ccc) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FTP_SSL_CCC);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftp_ssl_ccc requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ftp_use_eprt) {
#if CURL_AT_LEAST_VERSION(7, 10, 5)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FTP_USE_EPRT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftp_use_eprt requires curl 7.10.5 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ftp_use_epsv) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FTP_USE_EPSV); }
EXTENSION(pg_curl_easy_setopt_ftp_use_pret) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_FTP_USE_PRET);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ftp_use_pret requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_gssapi_delegation) {
#if CURL_AT_LEAST_VERSION(7, 22, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_GSSAPI_DELEGATION);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_gssapi_delegation requires curl 7.22.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_happy_eyeballs_timeout_ms) {
#if CURL_AT_LEAST_VERSION(7, 59, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_happy_eyeballs_timeout_ms requires curl 7.59.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_haproxyprotocol) {
#if CURL_AT_LEAST_VERSION(7, 60, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HAPROXYPROTOCOL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_haproxyprotocol requires curl 7.60.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_header) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HEADER); }
EXTENSION(pg_curl_easy_setopt_http09_allowed) {
#if CURL_AT_LEAST_VERSION(7, 64, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HTTP09_ALLOWED);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_http09_allowed requires curl 7.64.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_httpauth) {
#if CURL_AT_LEAST_VERSION(7, 10, 6)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HTTPAUTH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_httpauth requires curl 7.10.6 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_http_content_decoding) {
#if CURL_AT_LEAST_VERSION(7, 16, 2)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HTTP_CONTENT_DECODING);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_http_content_decoding requires curl 7.16.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_httpget) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HTTPGET); }
EXTENSION(pg_curl_easy_setopt_httpproxytunnel) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HTTPPROXYTUNNEL); }
EXTENSION(pg_curl_easy_setopt_http_transfer_decoding) {
#if CURL_AT_LEAST_VERSION(7, 16, 2)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HTTP_TRANSFER_DECODING);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_http_transfer_decoding requires curl 7.16.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_http_version) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_HTTP_VERSION); }
EXTENSION(pg_curl_easy_setopt_ignore_content_length) {
#if CURL_AT_LEAST_VERSION(7, 14, 1)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_IGNORE_CONTENT_LENGTH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ignore_content_length requires curl 7.14.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ipresolve) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_IPRESOLVE); }
EXTENSION(pg_curl_easy_setopt_keep_sending_on_error) {
#if CURL_AT_LEAST_VERSION(7, 51, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_KEEP_SENDING_ON_ERROR);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_keep_sending_on_error requires curl 7.51.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_localportrange) {
#if CURL_AT_LEAST_VERSION(7, 15, 2)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_LOCALPORTRANGE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_localportrange requires curl 7.15.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_localport) {
#if CURL_AT_LEAST_VERSION(7, 15, 2)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_LOCALPORT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_localport requires curl 7.15.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_low_speed_limit) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_LOW_SPEED_LIMIT); }
EXTENSION(pg_curl_easy_setopt_low_speed_time) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_LOW_SPEED_TIME); }
EXTENSION(pg_curl_easy_setopt_maxconnects) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_MAXCONNECTS); }
EXTENSION(pg_curl_easy_setopt_maxfilesize) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_MAXFILESIZE); }
EXTENSION(pg_curl_easy_setopt_maxredirs) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_MAXREDIRS); }
EXTENSION(pg_curl_easy_setopt_netrc) {
    /* .netrc holds the postgres OS user's credentials; ignoring it is fine */
    if (!PG_ARGISNULL(0) && PG_GETARG_INT64(0) != CURL_NETRC_IGNORED && !pg_curl_unrestricted()) pg_curl_whitelist_deny_option("curl_easy_setopt_netrc");
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_NETRC);
}
EXTENSION(pg_curl_easy_setopt_new_directory_perms) {
#if CURL_AT_LEAST_VERSION(7, 16, 4)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_NEW_DIRECTORY_PERMS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_new_directory_perms requires curl 7.16.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_new_file_perms) {
#if CURL_AT_LEAST_VERSION(7, 16, 4)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_NEW_FILE_PERMS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_new_file_perms requires curl 7.16.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_nobody) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_NOBODY); }
EXTENSION(pg_curl_easy_setopt_path_as_is) {
#if CURL_AT_LEAST_VERSION(7, 42, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PATH_AS_IS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_path_as_is requires curl 7.42.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_pipewait) {
#if CURL_AT_LEAST_VERSION(7, 34, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PIPEWAIT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_pipewait requires curl 7.34.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_port) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PORT); }
EXTENSION(pg_curl_easy_setopt_postredir) {
#if CURL_AT_LEAST_VERSION(7, 19, 1)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_POSTREDIR);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_postredir requires curl 7.19.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_post) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_POST); }
EXTENSION(pg_curl_easy_setopt_protocols) {
#if CURL_AT_LEAST_VERSION(7, 85, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_protocols deprecated: since 7.85.0. Use curl_easy_setopt_protocols_str")));
#elif CURL_AT_LEAST_VERSION(7, 19, 4)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROTOCOLS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_protocols requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxyauth) {
#if CURL_AT_LEAST_VERSION(7, 10, 7)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROXYAUTH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxyauth requires curl 7.10.7 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxyport) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROXYPORT); }
EXTENSION(pg_curl_easy_setopt_proxy_ssl_options) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROXY_SSL_OPTIONS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_ssl_options requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_ssl_verifyhost) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROXY_SSL_VERIFYHOST);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_ssl_verifyhost requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_ssl_verifypeer) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROXY_SSL_VERIFYPEER);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_ssl_verifypeer requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_sslversion) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROXY_SSLVERSION);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_sslversion requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxy_transfer_mode) {
#if CURL_AT_LEAST_VERSION(7, 18, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROXY_TRANSFER_MODE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_proxy_transfer_mode requires curl 7.18.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_proxytype) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PROXYTYPE); }
EXTENSION(pg_curl_easy_setopt_put) {
#if CURL_AT_LEAST_VERSION(7, 12, 1)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_put deprecated: since 7.12.1. Use curl_easy_setopt_upload")));
#else
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_PUT);
#endif
}
EXTENSION(pg_curl_easy_setopt_redir_protocols) {
#if CURL_AT_LEAST_VERSION(7, 85, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_redir_protocols deprecated: since 7.85.0. Use curl_easy_setopt_redir_protocols_str")));
#elif CURL_AT_LEAST_VERSION(7, 19, 4)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_REDIR_PROTOCOLS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_redir_protocols requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_resume_from) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_RESUME_FROM); }
EXTENSION(pg_curl_easy_setopt_rtsp_client_cseq) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_RTSP_CLIENT_CSEQ);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_rtsp_client_cseq requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_rtsp_request) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_RTSP_REQUEST);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_rtsp_request requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_rtsp_server_cseq) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_RTSP_SERVER_CSEQ);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_rtsp_server_cseq requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_sasl_ir) {
#if CURL_AT_LEAST_VERSION(7, 31, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SASL_IR);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_sasl_ir requires curl 7.31.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_server_response_timeout) {
#if CURL_AT_LEAST_VERSION(7, 10, 8)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SERVER_RESPONSE_TIMEOUT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_server_response_timeout requires curl 7.10.8 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_socks5_auth) {
#if CURL_AT_LEAST_VERSION(7, 55, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SOCKS5_AUTH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_socks5_auth requires curl 7.55.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_socks5_gssapi_nec) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SOCKS5_GSSAPI_NEC);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_socks5_gssapi_nec requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssh_auth_types) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSH_AUTH_TYPES);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssh_auth_types requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssh_compression) {
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSH_COMPRESSION);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssh_compression requires curl 7.56.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssl_enable_alpn) {
#if CURL_AT_LEAST_VERSION(7, 36, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSL_ENABLE_ALPN);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssl_enable_alpn requires curl 7.36.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssl_enable_npn) {
#if CURL_AT_LEAST_VERSION(7, 86, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_ssl_enable_npn deprecated: since 7.86.0. Has no function")));
#elif CURL_AT_LEAST_VERSION(7, 36, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSL_ENABLE_NPN);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssl_enable_npn requires curl 7.36.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssl_falsestart) {
#if CURL_AT_LEAST_VERSION(8, 15, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_setopt_ssl_falsestart deprecated: since 8.15.0. Has no function")));
#elif CURL_AT_LEAST_VERSION(7, 42, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSL_FALSESTART);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssl_falsestart requires curl 7.42.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssl_options) {
#if CURL_AT_LEAST_VERSION(7, 25, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSL_OPTIONS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssl_options requires curl 7.25.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssl_sessionid_cache) {
#if CURL_AT_LEAST_VERSION(7, 16, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSL_SESSIONID_CACHE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssl_sessionid_cache requires curl 7.16.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_ssl_verifyhost) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSL_VERIFYHOST); }
EXTENSION(pg_curl_easy_setopt_ssl_verifypeer) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSL_VERIFYPEER); }
EXTENSION(pg_curl_easy_setopt_ssl_verifystatus) {
#if CURL_AT_LEAST_VERSION(7, 41, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSL_VERIFYSTATUS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_ssl_verifystatus requires curl 7.41.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_sslversion) {
#if CURL_AT_LEAST_VERSION(7, 18, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SSLVERSION);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_sslversion requires curl 7.18.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_stream_weight) {
#if CURL_AT_LEAST_VERSION(7, 46, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_STREAM_WEIGHT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_stream_weight requires curl 7.46.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_suppress_connect_headers) {
#if CURL_AT_LEAST_VERSION(7, 54, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_SUPPRESS_CONNECT_HEADERS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_suppress_connect_headers requires curl 7.54.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_tcp_fastopen) {
#if CURL_AT_LEAST_VERSION(7, 49, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TCP_FASTOPEN);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tcp_fastopen requires curl 7.49.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_tcp_keepalive) {
#if CURL_AT_LEAST_VERSION(7, 25, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TCP_KEEPALIVE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tcp_keepalive requires curl 7.25.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_tcp_keepidle) {
#if CURL_AT_LEAST_VERSION(7, 25, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TCP_KEEPIDLE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tcp_keepidle requires curl 7.25.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_tcp_keepintvl) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TCP_KEEPINTVL); }
EXTENSION(pg_curl_easy_setopt_tcp_nodelay) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TCP_NODELAY); }
EXTENSION(pg_curl_easy_setopt_tftp_blksize) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TFTP_BLKSIZE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tftp_blksize requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_tftp_no_options) {
#if CURL_AT_LEAST_VERSION(7, 48, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TFTP_NO_OPTIONS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_tftp_no_options requires curl 7.48.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_timecondition) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TIMECONDITION); }
EXTENSION(pg_curl_easy_setopt_timeout_ms) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TIMEOUT_MS); }
EXTENSION(pg_curl_easy_setopt_timeout) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TIMEOUT); }
EXTENSION(pg_curl_easy_setopt_timevalue) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TIMEVALUE); }
EXTENSION(pg_curl_easy_setopt_transfer_encoding) {
#if CURL_AT_LEAST_VERSION(7, 21, 6)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TRANSFER_ENCODING);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_transfer_encoding requires curl 7.21.6 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_transfertext) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_TRANSFERTEXT); }
EXTENSION(pg_curl_easy_setopt_unrestricted_auth) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_UNRESTRICTED_AUTH); }
EXTENSION(pg_curl_easy_setopt_upkeep_interval_ms) {
#if CURL_AT_LEAST_VERSION(7, 62, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_UPKEEP_INTERVAL_MS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_upkeep_interval_ms requires curl 7.62.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_upload_buffersize) {
#if CURL_AT_LEAST_VERSION(7, 62, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_UPLOAD_BUFFERSIZE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_upload_buffersize requires curl 7.62.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_upload) { return pg_curl_easy_setopt_long(fcinfo, CURLOPT_UPLOAD); }
EXTENSION(pg_curl_easy_setopt_use_ssl) {
#if CURL_AT_LEAST_VERSION(7, 16, 5)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_USE_SSL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_use_ssl requires curl 7.16.5 or later")));
#endif
}
EXTENSION(pg_curl_easy_setopt_verbose) {
    CURLcode ec = CURL_LAST;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(1));
    if ((ec = curl_easy_setopt(curl->easy, CURLOPT_DEBUGDATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    if ((ec = curl_easy_setopt(curl->easy, CURLOPT_DEBUGFUNCTION, pg_debug_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_VERBOSE);
}
EXTENSION(pg_curl_easy_setopt_wildcardmatch) {
#if CURL_AT_LEAST_VERSION(7, 21, 0)
    return pg_curl_easy_setopt_long(fcinfo, CURLOPT_WILDCARDMATCH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_setopt_wildcardmatch requires curl 7.21.0 or later")));
#endif
}

#if CURL_AT_LEAST_VERSION(7, 32, 0)
static int pg_progress_callback(void *clientp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow) { return QueryCancelPending || ProcDiePending; }
#endif

static size_t pg_header_callback(char *buffer, size_t size, size_t nitems, void *userdata) {
    pg_curl_t *curl = userdata;
    size *= nitems;
    if (size && !pg_curl_append(curl, &curl->header_in, buffer, size)) return 0;
    return size;
}

static size_t pg_read_callback(char *buffer, size_t size, size_t nitems, void *userdata) {
    pg_curl_t *curl = userdata;
    size_t reqsize = size * nitems;
    StringInfoData *si = &curl->readdata;
    size_t remaining = si->len - si->cursor;
    size_t readsize = reqsize < remaining ? reqsize : remaining;
    memcpy(buffer, si->data + si->cursor, readsize);
    si->cursor += readsize;
    return readsize;
}

#if CURL_AT_LEAST_VERSION(7, 18, 0)
static int pg_seek_callback(void *userdata, curl_off_t offset, int origin) {
    pg_curl_t *curl = userdata;
    StringInfoData *si = &curl->readdata;
    if (origin != SEEK_SET || offset < 0 || offset > si->len) return CURL_SEEKFUNC_FAIL;
    si->cursor = offset;
    return CURL_SEEKFUNC_OK;
}
#endif

static size_t pg_write_callback(char *ptr, size_t size, size_t nmemb, void *userdata) {
    pg_curl_t *curl = userdata;
    size *= nmemb;
    if (size && !pg_curl_append(curl, &curl->data_in, ptr, size)) return 0;
    return size;
}

/* pg_whitelist_check_url() only understands what htmldoc would fetch -- a
 * lowercase "http:", "https:" or scheme-relative "//" -- and lets anything
 * else through unchecked, so classify the URL the way libcurl itself will
 * first: http(s) goes to pg_whitelist_check_url(), file:// to
 * pg_curl_check_local(), and any other scheme is denied. Returns the URL
 * to hand to libcurl -- normalized, with an explicit scheme and no dot
 * segments, so that what was checked is exactly what gets fetched regardless
 * of curl_easy_setopt_default_protocol() or curl_easy_setopt_path_as_is(). A
 * privileged caller with no whitelist configured is left unrestricted and
 * gets the URL back unchanged. */
static char *pg_curl_whitelist_url(const char *url, bool privileged) {
    char *result;
#if CURL_AT_LEAST_VERSION(7, 62, 0)
    char *scheme = NULL, *normalized = NULL, *path = NULL;
    char *scheme_copy = NULL, *path_copy = NULL;
    size_t i;
    CURLU *h;
    CURLUcode uc;
#endif
    if (pg_curl_unrestricted_for(privileged)) return pstrdup(url);
#if CURL_AT_LEAST_VERSION(7, 62, 0)
    if (!(h = curl_url())) ereport(ERROR, (errcode(ERRCODE_OUT_OF_MEMORY), errmsg("!curl_url")));
    uc = curl_url_set(h, CURLUPART_URL, url, CURLU_GUESS_SCHEME | CURLU_NON_SUPPORT_SCHEME);
    if (uc == CURLUE_OK) uc = curl_url_get(h, CURLUPART_SCHEME, &scheme, 0);
    if (uc == CURLUE_OK) uc = curl_url_get(h, CURLUPART_URL, &normalized, 0);
    if (uc == CURLUE_OK && !pg_strcasecmp(scheme, "file")) uc = curl_url_get(h, CURLUPART_PATH, &path, CURLU_URLDECODE);
    result = uc == CURLUE_OK ? pstrdup(normalized) : NULL;
    if (uc == CURLUE_OK) scheme_copy = pstrdup(scheme);
    if (path) path_copy = pstrdup(path);
    curl_free(scheme);
    curl_free(normalized);
    curl_free(path);
    curl_url_cleanup(h);
    if (!result) pg_whitelist_deny(url);
    if (!pg_strcasecmp(scheme_copy, "http") || !pg_strcasecmp(scheme_copy, "https")) {
        for (i = 0; i < strlen(scheme_copy); i++) result[i] = pg_tolower((unsigned char) result[i]);
        pg_whitelist_check_url(result, privileged);
    } else if (!pg_strcasecmp(scheme_copy, "file") && path_copy) pg_curl_check_local_for(path_copy, privileged);
    else pg_whitelist_deny(url);
    pfree(scheme_copy);
    if (path_copy) pfree(path_copy);
#else
    if (strncmp(url, "http://", 7) && strncmp(url, "https://", 8)) pg_whitelist_deny(url);
    pg_whitelist_check_url(url, privileged);
    result = pstrdup(url);
#endif
    return result;
}

#if CURL_AT_LEAST_VERSION(7, 80, 0)
/* Check the URL libcurl is about to connect to or request -- a redirect
 * target as much as the request URL -- against pg_curl.whitelist from inside
 * a libcurl callback. The refusal can't be raised there (see
 * pg_curl_append()), so it is stashed like an append error, the callback
 * fails the transfer, and pg_curl_multi_perform() re-throws it. */
static bool pg_curl_whitelist_allows(pg_curl_t *curl) {
    MemoryContext oldcontext = CurrentMemoryContext;
    volatile bool ok = true;
    char *url = NULL;
    if (curl->callback_error) return false;
    if (curl_easy_getinfo(curl->easy, CURLINFO_EFFECTIVE_URL, &url) != CURLE_OK || !url) return false;
    PG_TRY();
    {
        pfree(pg_curl_whitelist_url(url, curl->privileged));
    }
    PG_CATCH();
    {
        MemoryContextSwitchTo(pg_curl.context);
        curl->callback_error = CopyErrorData();
        FlushErrorState();
        MemoryContextSwitchTo(oldcontext);
        ok = false;
    }
    PG_END_TRY();
    return ok;
}

/* called before a host name is resolved, so a redirect to a host the
 * whitelist doesn't list is refused before even a DNS query goes out for it;
 * not for a name already in libcurl's DNS cache, though, which
 * pg_opensocket_callback() still catches */
static int pg_resolver_start_callback(void *resolver_state, void *reserved, void *userdata) {
    return !pg_curl_whitelist_allows(userdata);
}

/* called before every new connection, so a redirect to a host the whitelist
 * doesn't list is refused before that host is contacted */
static curl_socket_t pg_opensocket_callback(void *clientp, curlsocktype purpose, struct curl_sockaddr *address) {
    if (!pg_curl_whitelist_allows(clientp)) return CURL_SOCKET_BAD;
#ifdef SOCK_CLOEXEC
    return socket(address->family, address->socktype | SOCK_CLOEXEC, address->protocol);
#else
    return socket(address->family, address->socktype, address->protocol);
#endif
}

/* called before every request, including one on a reused connection, which
 * pg_opensocket_callback() never sees -- e.g. a redirect to another path on
 * the same host */
static int pg_prereq_callback(void *clientp, char *conn_primary_ip, char *conn_local_ip, int conn_primary_port, int conn_local_port) {
    return pg_curl_whitelist_allows(clientp) ? CURL_PREREQFUNC_OK : CURL_PREREQFUNC_ABORT;
}
#endif

/* Drop whatever a previous attempt collected, so the next transfer on this
 * handle -- a new perform or a retry -- starts from scratch. */
static void pg_curl_easy_rewind(pg_curl_t *curl) {
    resetStringInfo(&curl->data_in);
    resetStringInfo(&curl->data_out);
    resetStringInfo(&curl->debug);
    resetStringInfo(&curl->header_in);
    resetStringInfo(&curl->header_out);
    curl->readdata.cursor = 0;
    if (curl->callback_error) FreeErrorData(curl->callback_error);
    curl->callback_error = NULL;
}

static CURLcode pg_curl_easy_prepare(pg_curl_t *curl) {
    char *url;
    pg_curl_body_t body;
    curl->errcode = CURL_LAST;
    pg_curl_easy_rewind(curl);
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_ERRORBUFFER, curl->errbuf)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_HEADERDATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_HEADERFUNCTION, pg_header_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->header && ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_HTTPHEADER, curl->header)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->postquote && ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_POSTQUOTE, curl->postquote)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->prequote && ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_PREQUOTE, curl->prequote)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->quote && ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_QUOTE, curl->quote)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#if CURL_AT_LEAST_VERSION(7, 32, 0)
    if (curl->recipient && ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_MAIL_RCPT, curl->recipient)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#endif
#if CURL_AT_LEAST_VERSION(7, 56, 0)
    if (curl->mime && ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_MIMEPOST, curl->mime)) != CURLE_OK)) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#endif
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_NOPROGRESS, 0L)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_NOSIGNAL, 1L)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    body = curl->postfield.len ? PG_CURL_BODY_POSTFIELD : curl->readdata.len ? PG_CURL_BODY_READDATA : PG_CURL_BODY_NONE;
    /* libcurl keeps options across transfers, so undo the body a previous
     * perform put on the handle unless this one overwrites it: a stale
     * POSTFIELDS would resend the old buffer with its old size, a stale UPLOAD
     * would try to PUT nothing. HTTPGET is libcurl's way back to a plain GET
     * (it also clears UPLOAD). Options the caller set directly are left alone
     * when no body was involved. */
    if (curl->body == PG_CURL_BODY_POSTFIELD && body != PG_CURL_BODY_POSTFIELD) {
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_POSTFIELDS, (char *)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_POSTFIELDSIZE_LARGE, (curl_off_t)-1)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_HTTPGET, 1L)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    }
    if (curl->body == PG_CURL_BODY_READDATA && body != PG_CURL_BODY_READDATA) {
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_HTTPGET, 1L)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_INFILESIZE_LARGE, (curl_off_t)-1)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_READFUNCTION, (curl_read_callback)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_READDATA, (void *)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#if CURL_AT_LEAST_VERSION(7, 18, 0)
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_SEEKFUNCTION, (curl_seek_callback)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
        if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_SEEKDATA, (void *)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#endif
    }
    curl->body = body;
    if (curl->postfield.len && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_POSTFIELDS, curl->postfield.data)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->postfield.len && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_POSTFIELDSIZE_LARGE, (curl_off_t)curl->postfield.len)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->readdata.len && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_INFILESIZE_LARGE, (curl_off_t)curl->readdata.len)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->readdata.len && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_READDATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->readdata.len && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_READFUNCTION, pg_read_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#if CURL_AT_LEAST_VERSION(7, 18, 0)
    if (curl->readdata.len && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_SEEKDATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if (curl->readdata.len && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_SEEKFUNCTION, pg_seek_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#endif
    if (curl->readdata.len && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_UPLOAD, 1L)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    curl->privileged = pg_curl_privileged();
    url = pg_curl_whitelist_url(curl->url.data, curl->privileged);
#if CURL_AT_LEAST_VERSION(7, 80, 0)
    /* the request URL is checked above, but a redirect target only once
     * libcurl gets to it; NULL restores libcurl's own behavior for a handle a
     * previous perform left the callbacks on */
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_RESOLVER_START_DATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_RESOLVER_START_FUNCTION, pg_curl_unrestricted_for(curl->privileged) ? (curl_resolver_start_callback)NULL : pg_resolver_start_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_OPENSOCKETDATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_OPENSOCKETFUNCTION, pg_curl_unrestricted_for(curl->privileged) ? (curl_opensocket_callback)NULL : pg_opensocket_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_PREREQDATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_PREREQFUNCTION, pg_curl_unrestricted_for(curl->privileged) ? (curl_prereq_callback)NULL : pg_prereq_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#else
    /* also covers followlocation set on this handle before the whitelist
     * applied, e.g. by a superuser before SET ROLE */
    if (!pg_curl_unrestricted() && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_FOLLOWLOCATION, 0L)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#endif
    /* likewise for hosts curl would connect to besides the request URL; NULL
     * restores the default, i.e. a proxy from the server's environment */
    if (!pg_curl_unrestricted() && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_PROXY, (char *)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    if (!pg_curl_unrestricted() && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_PRE_PROXY, (char *)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#endif
#if CURL_AT_LEAST_VERSION(7, 62, 0)
    if (!pg_curl_unrestricted() && (curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_DOH_URL, (char *)NULL)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#endif
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_URL, url)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    pfree(url);
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_WRITEDATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_WRITEFUNCTION, pg_write_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#if CURL_AT_LEAST_VERSION(7, 32, 0)
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_XFERINFODATA, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_XFERINFOFUNCTION, pg_progress_callback)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
#endif
    if ((curl->errcode = curl_easy_setopt(curl->easy, CURLOPT_PRIVATE, curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    curl->try = 0;
    return curl->errcode;
}

static bool pg_curl_multi_add_handle_my(const char *conname) {
    CURLMcode mc;
    pg_curl_t *curl = pg_curl_easy_init(conname);
    pg_curl_multi_remove_handle(curl, true);
    if ((curl->errcode = pg_curl_easy_prepare(curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    if ((mc = curl_multi_add_handle(curl->multi = pg_curl.multi, curl->easy)) != CURLM_OK) ereport(ERROR, (pg_curl_mc(mc), errmsg("%s", curl_multi_strerror(mc))));
    return curl->errcode == CURLE_OK && mc == CURLM_OK;
}

EXTENSION(pg_curl_multi_add_handle) {
    PG_RETURN_BOOL(pg_curl_multi_add_handle_my(PG_CONNAME(0)));
}

EXTENSION(pg_curl_multi_perform) {
    CURLcode ec = CURL_LAST;
    CURLMcode mc;
    CURLMsg *msg;
    int msgs_in_queue;
    int running_handles;
    int timeout_ms;
    int try;
    long sleep;
    bool all_ok = true;
    if ((try = PG_ARGISNULL(0) ? 1 : PG_GETARG_INT32(0)) <= 0) ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("curl_multi_perform invalid argument try %i", try), errhint("Argument try must be positive!")));
    if ((sleep = PG_ARGISNULL(1) ? 1000000 : PG_GETARG_INT64(1)) < 0) ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("curl_multi_perform invalid argument sleep %li", sleep), errhint("Argument sleep must be non-negative!")));
    if ((timeout_ms = PG_ARGISNULL(2) ? 1000 : PG_GETARG_INT32(2)) <= 0) ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("curl_multi_perform invalid argument timeout_ms %i", timeout_ms), errhint("Argument timeout_ms must be positive!")));
    do {
        bool sleep_need = false;
        CHECK_FOR_INTERRUPTS();
        if ((mc = curl_multi_wait(pg_curl.multi, NULL, 0, timeout_ms, NULL)) != CURLM_OK) ereport(ERROR, (pg_curl_mc(mc), errmsg("%s", curl_multi_strerror(mc))));
        if ((mc = curl_multi_perform(pg_curl.multi, &running_handles)) != CURLM_OK) ereport(ERROR, (pg_curl_mc(mc), errmsg("%s", curl_multi_strerror(mc))));
        while ((msg = curl_multi_info_read(pg_curl.multi, &msgs_in_queue))) if (msg->msg == CURLMSG_DONE) {
            pg_curl_t *curl;
            if ((ec = curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &curl)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
            curl->errcode = msg->data.result;
            curl->try++;
            if (curl->callback_error) curl->try = try; /* no point retrying */
            switch ((ec = curl->errcode)) {
                case CURLE_ABORTED_BY_CALLBACK: break;
                case CURLE_OK: curl->try = try; break;
                case CURLE_UNSUPPORTED_PROTOCOL: case CURLE_FAILED_INIT: case CURLE_URL_MALFORMAT: case CURLE_NOT_BUILT_IN: case CURLE_FUNCTION_NOT_FOUND: case CURLE_BAD_FUNCTION_ARGUMENT: case CURLE_UNKNOWN_OPTION: case CURLE_LDAP_INVALID_URL: curl->try = try; pg_fallthrough;
                default: if (curl->try < try) {
                    if (curl->errbuf[0]) ereport(WARNING, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec)), errdetail("%s", curl->errbuf), errcontext("try %i", curl->try)));
                    else ereport(WARNING, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec)), errcontext("try %i", curl->try)));
                    sleep_need = true;
                }
            }
            if (curl->try < try) {
                /* libcurl considers a finished transfer done for good, so a
                 * retry means taking the handle out of the multi and adding
                 * it back, which restarts the transfer from the beginning. */
                if ((mc = curl_multi_remove_handle(pg_curl.multi, curl->easy)) != CURLM_OK) ereport(ERROR, (pg_curl_mc(mc), errmsg("%s", curl_multi_strerror(mc))));
                pg_curl_easy_rewind(curl);
                if ((mc = curl_multi_add_handle(pg_curl.multi, curl->easy)) != CURLM_OK) ereport(ERROR, (pg_curl_mc(mc), errmsg("%s", curl_multi_strerror(mc))));
                running_handles++;
            } else {
                if (curl->errcode != CURLE_OK) all_ok = false;
                pg_curl_multi_remove_handle(curl, true);
            }
            if (curl->callback_error) {
                /* libcurl is out of the callback and done with the transfer */
                ErrorData *edata = curl->callback_error;
                curl->callback_error = NULL;
                ReThrowError(edata);
            }
        }
        if (sleep_need && sleep) pg_usleep(sleep);
    } while (running_handles);
    PG_RETURN_BOOL(all_ok && mc == CURLM_OK);
}

EXTENSION(pg_curl_easy_perform) {
    return pg_curl_multi_add_handle_my("unknown") && pg_curl_multi_perform(fcinfo);
}

static void pg_curl_check_error(pg_curl_t *curl) {
    if (curl->errcode != CURLE_OK) {
        if (curl->errbuf[0]) ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode)), errdetail("%s", curl->errbuf)));
        else ereport(ERROR, (pg_curl_ec(curl->errcode), errmsg("%s", curl_easy_strerror(curl->errcode))));
    }
}

EXTENSION(pg_curl_easy_getinfo_debug) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_check_error(curl);
    if (!curl->debug.len) PG_RETURN_NULL();
    PG_RETURN_TEXT_P(cstring_to_text_with_len(curl->debug.data, curl->debug.len));
}

EXTENSION(pg_curl_easy_getinfo_header_in) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_check_error(curl);
    if (!curl->header_in.len) PG_RETURN_NULL();
    PG_RETURN_TEXT_P(cstring_to_text_with_len(curl->header_in.data, curl->header_in.len));
}

EXTENSION(pg_curl_easy_getinfo_header_out) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_check_error(curl);
    if (!curl->header_out.len) PG_RETURN_NULL();
    PG_RETURN_TEXT_P(cstring_to_text_with_len(curl->header_out.data, curl->header_out.len));
}

EXTENSION(pg_curl_easy_getinfo_data_in) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_check_error(curl);
    if (!curl->data_in.len) PG_RETURN_NULL();
    PG_RETURN_BYTEA_P(cstring_to_text_with_len(curl->data_in.data, curl->data_in.len));
}

EXTENSION(pg_curl_easy_getinfo_data_out) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_check_error(curl);
    if (!curl->data_out.len) PG_RETURN_NULL();
    PG_RETURN_BYTEA_P(cstring_to_text_with_len(curl->data_out.data, curl->data_out.len));
}

EXTENSION(pg_curl_easy_getinfo_headers) {
    ereport(WARNING, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_getinfo_headers deprecated, use curl_easy_getinfo_header_in instead")));
    return pg_curl_easy_getinfo_header_in(fcinfo);
}

EXTENSION(pg_curl_easy_getinfo_response) {
    ereport(WARNING, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_getinfo_response deprecated, use curl_easy_getinfo_data_in instead")));
    return pg_curl_easy_getinfo_data_in(fcinfo);
}

EXTENSION(pg_curl_easy_getinfo_errbuf) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    if (!curl->errbuf[0]) PG_RETURN_NULL();
    PG_RETURN_TEXT_P(cstring_to_text(curl->errbuf));
}

EXTENSION(pg_curl_easy_getinfo_errdesc) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    PG_RETURN_TEXT_P(cstring_to_text(curl_easy_strerror(curl->errcode)));
}

EXTENSION(pg_curl_easy_getinfo_errcode) {
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    PG_RETURN_INT64(curl->errcode);
}

static Datum pg_curl_easy_getinfo_char(PG_FUNCTION_ARGS, CURLINFO info) {
#if CURL_AT_LEAST_VERSION(7, 4, 1)
    CURLcode ec = CURL_LAST;
    char *value = NULL;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_check_error(curl);
    if ((ec = curl_easy_getinfo(curl->easy, info, &value)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    if (!value) PG_RETURN_NULL();
    PG_RETURN_TEXT_P(cstring_to_text(value));
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_* requires curl 7.4.1 or later")));
#endif
}

EXTENSION(pg_curl_easy_getinfo_content_type) {
#if CURL_AT_LEAST_VERSION(7, 9, 4)
    return pg_curl_easy_getinfo_char(fcinfo, CURLINFO_CONTENT_TYPE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_content_type requires curl 7.9.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_effective_url) {
#if CURL_AT_LEAST_VERSION(7, 4, 0)
    return pg_curl_easy_getinfo_char(fcinfo, CURLINFO_EFFECTIVE_URL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_effective_url requires curl 7.4.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_ftp_entry_path) {
#if CURL_AT_LEAST_VERSION(7, 15, 4)
    return pg_curl_easy_getinfo_char(fcinfo, CURLINFO_FTP_ENTRY_PATH);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_ftp_entry_path requires curl 7.15.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_local_ip) {
#if CURL_AT_LEAST_VERSION(7, 21, 0)
    return pg_curl_easy_getinfo_char(fcinfo, CURLINFO_LOCAL_IP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_local_ip requires curl 7.21.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_primary_ip) {
#if CURL_AT_LEAST_VERSION(7, 19, 0)
    return pg_curl_easy_getinfo_char(fcinfo, CURLINFO_PRIMARY_IP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_primary_ip requires curl 7.19.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_redirect_url) {
#if CURL_AT_LEAST_VERSION(7, 18, 2)
    return pg_curl_easy_getinfo_char(fcinfo, CURLINFO_REDIRECT_URL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_redirect_url requires curl 7.18.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_rtsp_session_id) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_getinfo_char(fcinfo, CURLINFO_RTSP_SESSION_ID);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_rtsp_session_id requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_scheme) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_getinfo_char(fcinfo, CURLINFO_SCHEME);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_scheme requires curl 7.52.0 or later")));
#endif
}

static Datum pg_curl_easy_getinfo_long(PG_FUNCTION_ARGS, CURLINFO info) {
#if CURL_AT_LEAST_VERSION(7, 4, 1)
    CURLcode ec = CURL_LAST;
    long value;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_check_error(curl);
    if ((ec = curl_easy_getinfo(curl->easy, info, &value)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    PG_RETURN_INT64(value);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_* requires curl 7.4.1 or later")));
#endif
}

EXTENSION(pg_curl_easy_getinfo_activesocket) {
#if CURL_AT_LEAST_VERSION(7, 45, 0)
    /* CURLINFO_ACTIVESOCKET writes a curl_socket_t, not a long, so it can't
     * go through pg_curl_easy_getinfo_long(). */
    CURLcode ec = CURL_LAST;
    curl_socket_t value;
    pg_curl_t *curl = pg_curl_easy_init(PG_CONNAME(0));
    pg_curl_check_error(curl);
    if ((ec = curl_easy_getinfo(curl->easy, CURLINFO_ACTIVESOCKET, &value)) != CURLE_OK) ereport(ERROR, (pg_curl_ec(ec), errmsg("%s", curl_easy_strerror(ec))));
    PG_RETURN_INT64(value);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_activesocket requires curl 7.45.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_condition_unmet) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_CONDITION_UNMET);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_condition_unmet requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_filetime) {
#if CURL_AT_LEAST_VERSION(7, 5, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_FILETIME);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_filetime requires curl 7.5.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_header_size) {
#if CURL_AT_LEAST_VERSION(7, 4, 1)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_HEADER_SIZE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_header_size requires curl 7.4.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_httpauth_avail) {
#if CURL_AT_LEAST_VERSION(7, 10, 8)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_HTTPAUTH_AVAIL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_httpauth_avail requires curl 7.10.8 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_http_connectcode) {
#if CURL_AT_LEAST_VERSION(7, 10, 7)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_HTTP_CONNECTCODE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_http_connectcode requires curl 7.10.7 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_http_version) {
#if CURL_AT_LEAST_VERSION(7, 50, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_HTTP_VERSION);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_http_version requires curl 7.50.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_lastsocket) {
#if CURL_AT_LEAST_VERSION(7, 45, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_getinfo_lastsocket deprecated: since 7.45.0. Use curl_easy_getinfo_activesocket")));
#elif CURL_AT_LEAST_VERSION(7, 15, 2)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_LASTSOCKET);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_lastsocket requires curl 7.15.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_local_port) {
#if CURL_AT_LEAST_VERSION(7, 21, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_LOCAL_PORT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_local_port requires curl 7.21.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_num_connects) {
#if CURL_AT_LEAST_VERSION(7, 12, 3)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_NUM_CONNECTS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_num_connects requires curl 7.12.3 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_os_errno) {
#if CURL_AT_LEAST_VERSION(7, 12, 2)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_OS_ERRNO);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_os_errno requires curl 7.12.2 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_primary_port) {
#if CURL_AT_LEAST_VERSION(7, 21, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_PRIMARY_PORT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_primary_port requires curl 7.21.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_protocol) {
#if CURL_AT_LEAST_VERSION(7, 85, 0)
    ereport(ERROR, (errcode(ERRCODE_WARNING_DEPRECATED_FEATURE), errmsg("curl_easy_getinfo_protocol deprecated: since 7.85.0. Use curl_easy_getinfo_scheme")));
#elif CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_PROTOCOL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_protocol requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_proxyauth_avail) {
#if CURL_AT_LEAST_VERSION(7, 10, 8)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_PROXYAUTH_AVAIL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_proxyauth_avail requires curl 7.10.8 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_proxy_ssl_verifyresult) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_PROXY_SSL_VERIFYRESULT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_proxy_ssl_verifyresult requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_redirect_count) {
#if CURL_AT_LEAST_VERSION(7, 9, 7)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_REDIRECT_COUNT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_redirect_count requires curl 7.9.7 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_request_size) {
#if CURL_AT_LEAST_VERSION(7, 4, 1)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_REQUEST_SIZE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_request_size requires curl 7.4.1 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_response_code) {
#if CURL_AT_LEAST_VERSION(7, 10, 8)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_RESPONSE_CODE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_response_code requires curl 7.10.8 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_rtsp_client_cseq) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_RTSP_CLIENT_CSEQ);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_rtsp_client_cseq requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_rtsp_cseq_recv) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_RTSP_CSEQ_RECV);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_rtsp_cseq_recv requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_rtsp_server_cseq) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_RTSP_SERVER_CSEQ);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_rtsp_server_cseq requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_easy_getinfo_ssl_verifyresult) {
#if CURL_AT_LEAST_VERSION(7, 5, 0)
    return pg_curl_easy_getinfo_long(fcinfo, CURLINFO_SSL_VERIFYRESULT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_easy_getinfo_ssl_verifyresult requires curl 7.5.0 or later")));
#endif
}

EXTENSION(pg_curl_http_version_1_0) { PG_RETURN_INT64(CURL_HTTP_VERSION_1_0); }
EXTENSION(pg_curl_http_version_1_1) { PG_RETURN_INT64(CURL_HTTP_VERSION_1_1); }
EXTENSION(pg_curl_http_version_2_0) {
#if CURL_AT_LEAST_VERSION(7, 33, 0)
    PG_RETURN_INT64(CURL_HTTP_VERSION_2_0);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("_curl_http_version_2_0 requires curl 7.33.0 or later")));
#endif
}
EXTENSION(pg_curl_http_version_2_prior_knowledge) {
#if CURL_AT_LEAST_VERSION(7, 49, 0)
    PG_RETURN_INT64(CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_http_version_2_prior_knowledge requires curl 7.49.0 or later")));
#endif
}
EXTENSION(pg_curl_http_version_2tls) {
#if CURL_AT_LEAST_VERSION(7, 47, 0)
    PG_RETURN_INT64(CURL_HTTP_VERSION_2TLS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_http_version_2tls requires curl 7.47.0 or later")));
#endif
}
EXTENSION(pg_curl_http_version_3) {
#if CURL_AT_LEAST_VERSION(7, 66, 0)
    PG_RETURN_INT64(CURL_HTTP_VERSION_3);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_http_version_3 requires curl 7.66.0 or later")));
#endif
}
EXTENSION(pg_curl_http_version_none) { PG_RETURN_INT64(CURL_HTTP_VERSION_NONE); }

EXTENSION(pg_curlusessl_none) {
#if CURL_AT_LEAST_VERSION(7, 11, 0)
    PG_RETURN_INT64(CURLUSESSL_NONE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlusessl_none requires curl 7.11.0 or later")));
#endif
}
EXTENSION(pg_curlusessl_try) {
#if CURL_AT_LEAST_VERSION(7, 11, 0)
    PG_RETURN_INT64(CURLUSESSL_TRY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlusessl_try requires curl 7.11.0 or later")));
#endif
}
EXTENSION(pg_curlusessl_control) {
#if CURL_AT_LEAST_VERSION(7, 11, 0)
    PG_RETURN_INT64(CURLUSESSL_CONTROL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlusessl_control requires curl 7.11.0 or later")));
#endif
}
EXTENSION(pg_curlusessl_all) {
#if CURL_AT_LEAST_VERSION(7, 11, 0)
    PG_RETURN_INT64(CURLUSESSL_ALL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlusessl_all requires curl 7.11.0 or later")));
#endif
}

EXTENSION(pg_curl_upkeep_interval_default) {
#ifdef CURL_UPKEEP_INTERVAL_DEFAULT
    PG_RETURN_INT64(CURL_UPKEEP_INTERVAL_DEFAULT);
#else
    ereport(ERROR, (errcode(ERRCODE_UNDEFINED_FUNCTION), errmsg("CURL_UPKEEP_INTERVAL_DEFAULT undefined")));
#endif
}

EXTENSION(pg_curl_timecond_none) { PG_RETURN_INT64(CURL_TIMECOND_NONE); }
EXTENSION(pg_curl_timecond_ifmodsince) { PG_RETURN_INT64(CURL_TIMECOND_IFMODSINCE); }
EXTENSION(pg_curl_timecond_ifunmodsince) { PG_RETURN_INT64(CURL_TIMECOND_IFUNMODSINCE); }

EXTENSION(pg_curl_sslversion_default) { PG_RETURN_INT64(CURL_SSLVERSION_DEFAULT); }
EXTENSION(pg_curl_sslversion_tlsv1) { PG_RETURN_INT64(CURL_SSLVERSION_TLSv1); }
EXTENSION(pg_curl_sslversion_sslv2) { PG_RETURN_INT64(CURL_SSLVERSION_SSLv2); }
EXTENSION(pg_curl_sslversion_sslv3) { PG_RETURN_INT64(CURL_SSLVERSION_SSLv3); }
EXTENSION(pg_curl_sslversion_tlsv1_0) {
#if CURL_AT_LEAST_VERSION(7, 34, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_TLSv1_0);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_tlsv1_0 requires curl 7.34.0 or later")));
#endif
}
EXTENSION(pg_curl_sslversion_tlsv1_1) {
#if CURL_AT_LEAST_VERSION(7, 34, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_TLSv1_1);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_tlsv1_1 requires curl 7.34.0 or later")));
#endif
}
EXTENSION(pg_curl_sslversion_tlsv1_2) {
#if CURL_AT_LEAST_VERSION(7, 34, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_TLSv1_2);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_tlsv1_2 requires curl 7.34.0 or later")));
#endif
}
EXTENSION(pg_curl_sslversion_tlsv1_3) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_TLSv1_3);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_tlsv1_3 requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curl_sslversion_max_default) {
#if CURL_AT_LEAST_VERSION(7, 54, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_MAX_DEFAULT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_max_default requires curl 7.54.0 or later")));
#endif
}
EXTENSION(pg_curl_sslversion_max_tlsv1_0) {
#if CURL_AT_LEAST_VERSION(7, 54, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_MAX_TLSv1_0);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_max_tlsv1_0 requires curl 7.54.0 or later")));
#endif
}
EXTENSION(pg_curl_sslversion_max_tlsv1_1) {
#if CURL_AT_LEAST_VERSION(7, 54, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_MAX_TLSv1_1);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_max_tlsv1_1 requires curl 7.54.0 or later")));
#endif
}
EXTENSION(pg_curl_sslversion_max_tlsv1_2) {
#if CURL_AT_LEAST_VERSION(7, 54, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_MAX_TLSv1_2);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_max_tlsv1_2 requires curl 7.54.0 or later")));
#endif
}
EXTENSION(pg_curl_sslversion_max_tlsv1_3) {
#if CURL_AT_LEAST_VERSION(7, 54, 0)
    PG_RETURN_INT64(CURL_SSLVERSION_MAX_TLSv1_3);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_sslversion_max_tlsv1_3 requires curl 7.54.0 or later")));
#endif
}

EXTENSION(pg_curlsslopt_allow_beast) {
#if CURL_AT_LEAST_VERSION(7, 25, 0)
    PG_RETURN_INT64(CURLSSLOPT_ALLOW_BEAST);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlsslopt_allow_beast requires curl 7.25.0 or later")));
#endif
}
EXTENSION(pg_curlsslopt_no_revoke) {
#if CURL_AT_LEAST_VERSION(7, 44, 0)
    PG_RETURN_INT64(CURLSSLOPT_NO_REVOKE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlsslopt_no_revoke requires curl 7.44.0 or later")));
#endif
}
EXTENSION(pg_curlsslopt_no_partialchain) {
#if CURL_AT_LEAST_VERSION(7, 68, 0)
    PG_RETURN_INT64(CURLSSLOPT_NO_PARTIALCHAIN);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlsslopt_no_partialchain requires curl 7.68.0 or later")));
#endif
}
EXTENSION(pg_curlsslopt_revoke_best_effort) {
#if CURL_AT_LEAST_VERSION(7, 70, 0)
    PG_RETURN_INT64(CURLSSLOPT_REVOKE_BEST_EFFORT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlsslopt_revoke_best_effort requires curl 7.70.0 or later")));
#endif
}
EXTENSION(pg_curlsslopt_native_ca) {
#if CURL_AT_LEAST_VERSION(7, 71, 0)
    PG_RETURN_INT64(CURLSSLOPT_NATIVE_CA);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlsslopt_native_ca requires curl 7.71.0 or later")));
#endif
}
EXTENSION(pg_curlsslopt_auto_client_cert) {
#if CURL_AT_LEAST_VERSION(7, 77, 0)
    PG_RETURN_INT64(CURLSSLOPT_AUTO_CLIENT_CERT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlsslopt_auto_client_cert requires curl 7.77.0 or later")));
#endif
}

EXTENSION(pg_curlssh_auth_publickey) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    PG_RETURN_INT64(CURLSSH_AUTH_PUBLICKEY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlssh_auth_publickey requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curlssh_auth_password) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    PG_RETURN_INT64(CURLSSH_AUTH_PASSWORD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlssh_auth_password requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curlssh_auth_host) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    PG_RETURN_INT64(CURLSSH_AUTH_HOST);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlssh_auth_host requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curlssh_auth_keyboard) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    PG_RETURN_INT64(CURLSSH_AUTH_KEYBOARD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlssh_auth_keyboard requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curlssh_auth_agent) {
#if CURL_AT_LEAST_VERSION(7, 28, 0)
    PG_RETURN_INT64(CURLSSH_AUTH_AGENT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlssh_auth_agent requires curl 7.28.0 or later")));
#endif
}
EXTENSION(pg_curlssh_auth_any) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    PG_RETURN_INT64(CURLSSH_AUTH_ANY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlssh_auth_any requires curl 7.16.1 or later")));
#endif
}

EXTENSION(pg_curlauth_basic) {
#if CURL_AT_LEAST_VERSION(7, 10, 6)
    PG_RETURN_INT64(CURLAUTH_BASIC);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_basic requires curl 7.10.6 or later")));
#endif
}
EXTENSION(pg_curlauth_digest) {
#if CURL_AT_LEAST_VERSION(7, 10, 6)
    PG_RETURN_INT64(CURLAUTH_DIGEST);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_digest requires curl 7.10.6 or later")));
#endif
}
EXTENSION(pg_curlauth_digest_ie) {
#if CURL_AT_LEAST_VERSION(7, 19, 3)
    PG_RETURN_INT64(CURLAUTH_DIGEST_IE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_digest_ie requires curl 7.19.3 or later")));
#endif
}
EXTENSION(pg_curlauth_bearer) {
#if CURL_AT_LEAST_VERSION(7, 61, 0)
    PG_RETURN_INT64(CURLAUTH_BEARER);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_bearer requires curl 7.61.0 or later")));
#endif
}
EXTENSION(pg_curlauth_negotiate) {
#if CURL_AT_LEAST_VERSION(7, 10, 6)
    PG_RETURN_INT64(CURLAUTH_NEGOTIATE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_negotiate requires curl 7.10.6 or later")));
#endif
}
EXTENSION(pg_curlauth_ntlm) {
#if CURL_AT_LEAST_VERSION(7, 10, 6)
    PG_RETURN_INT64(CURLAUTH_NTLM);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_ntlm requires curl 7.10.6 or later")));
#endif
}
EXTENSION(pg_curlauth_ntlm_wb) {
#if CURL_AT_LEAST_VERSION(7, 22, 0)
    PG_RETURN_INT64(CURLAUTH_NTLM_WB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_ntlm_wb requires curl 7.22.0 or later")));
#endif
}
EXTENSION(pg_curlauth_any) {
#if CURL_AT_LEAST_VERSION(7, 10, 6)
    PG_RETURN_INT64(CURLAUTH_ANY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_any requires curl 7.10.6 or later")));
#endif
}
EXTENSION(pg_curlauth_anysafe) {
#if CURL_AT_LEAST_VERSION(7, 10, 6)
    PG_RETURN_INT64(CURLAUTH_ANYSAFE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_anysafe requires curl 7.10.6 or later")));
#endif
}
EXTENSION(pg_curlauth_only) {
#if CURL_AT_LEAST_VERSION(7, 21, 3)
    PG_RETURN_INT64(CURLAUTH_ONLY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_only requires curl 7.21.3 or later")));
#endif
}
EXTENSION(pg_curlauth_aws_sigv4) {
#if CURL_AT_LEAST_VERSION(7, 75, 0)
    PG_RETURN_INT64(CURLAUTH_AWS_SIGV4);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_aws_sigv4 requires curl 7.75.0 or later")));
#endif
}
EXTENSION(pg_curlauth_gssapi) {
#ifdef CURLAUTH_GSSAPI
    PG_RETURN_INT64(CURLAUTH_GSSAPI);
#else
    ereport(ERROR, (errcode(ERRCODE_UNDEFINED_FUNCTION), errmsg("CURLAUTH_GSSAPI undefined")));
#endif
}
EXTENSION(pg_curlauth_none) {
#if CURL_AT_LEAST_VERSION(7, 10, 6)
    PG_RETURN_INT64(CURLAUTH_NONE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlauth_none requires curl 7.10.6 or later")));
#endif
}

EXTENSION(pg_curl_rtspreq_options) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_OPTIONS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_options requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_describe) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_DESCRIBE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_describe requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_announce) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_ANNOUNCE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_announce requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_setup) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_SETUP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_setup requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_play) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_PLAY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_play requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_pause) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_PAUSE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("url_rtspreq_pause requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_teardown) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_TEARDOWN);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_teardown requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_get_parameter) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_GET_PARAMETER);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_get_parameter requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_set_parameter) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_SET_PARAMETER);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_set_parameter requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_record) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_RECORD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_record requires curl 7.20.0 or later")));
#endif
}
EXTENSION(pg_curl_rtspreq_receive) {
#if CURL_AT_LEAST_VERSION(7, 20, 0)
    PG_RETURN_INT64(CURL_RTSPREQ_RECEIVE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_rtspreq_receive requires curl 7.20.0 or later")));
#endif
}

EXTENSION(pg_curlproto_dict) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_DICT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_dict requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_file) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_FILE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_file requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_ftp) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_FTP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_ftp requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_ftps) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_FTPS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_ftps requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_gopher) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_GOPHER);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_gopher requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_http) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_HTTP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_http requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_https) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_HTTPS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_https requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_imap) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_IMAP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_imap requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_imaps) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_IMAPS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_imaps requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_ldap) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_LDAP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_ldap requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_ldaps) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_LDAPS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_ldaps requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_pop3) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_POP3);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_pop3 requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_pop3s) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_POP3S);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_pop3s requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_rtmp) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_RTMP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_rtmp requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_rtmpe) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_RTMPE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_rtmpe requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_rtmps) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_RTMPS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_rtmps requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_rtmpt) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_RTMPT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_rtmpt requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_rtmpte) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_RTMPTE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_rtmpte requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_rtmpts) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_RTMPTS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_rtmpts requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_rtsp) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_RTSP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_rtsp requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_scp) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_SCP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_scp requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_sftp) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_SFTP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_sftp requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_smb) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_SMB);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_smb requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_smbs) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_SMBS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_smbs requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_smtp) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_SMTP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_smtp requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_smtps) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_SMTPS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_smtps requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_telnet) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_TELNET);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_telnet requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_tftp) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_TFTP);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_tftp requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlproto_all) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLPROTO_ALL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproto_all requires curl 7.19.4 or later")));
#endif
}

EXTENSION(pg_curlproxy_http) { PG_RETURN_INT64(CURLPROXY_HTTP); }
EXTENSION(pg_curlproxy_https) {
#if CURL_AT_LEAST_VERSION(7, 52, 0)
    PG_RETURN_INT64(CURLPROXY_HTTPS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlproxy_https requires curl 7.52.0 or later")));
#endif
}
EXTENSION(pg_curlproxy_http_1_0) { PG_RETURN_INT64(CURLPROXY_HTTP_1_0); }
EXTENSION(pg_curlproxy_socks4) { PG_RETURN_INT64(CURLPROXY_SOCKS4); }
EXTENSION(pg_curlproxy_socks4a) { PG_RETURN_INT64(CURLPROXY_SOCKS4A); }
EXTENSION(pg_curlproxy_socks5) { PG_RETURN_INT64(CURLPROXY_SOCKS5); }
EXTENSION(pg_curlproxy_socks5_hostname) { PG_RETURN_INT64(CURLPROXY_SOCKS5_HOSTNAME); }

EXTENSION(pg_curl_redir_post_301) {
#if CURL_AT_LEAST_VERSION(7, 19, 1)
    PG_RETURN_INT64(CURL_REDIR_POST_301);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_redir_post_301 requires curl 7.19.1 or later")));
#endif
}
EXTENSION(pg_curl_redir_post_302) {
#if CURL_AT_LEAST_VERSION(7, 19, 1)
    PG_RETURN_INT64(CURL_REDIR_POST_302);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_redir_post_302 requires curl 7.19.1 or later")));
#endif
}
EXTENSION(pg_curl_redir_post_303) {
#if CURL_AT_LEAST_VERSION(7, 26, 0)
    PG_RETURN_INT64(CURL_REDIR_POST_303);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_redir_post_303 requires curl 7.26.0 or later")));
#endif
}
EXTENSION(pg_curl_redir_post_all) {
#if CURL_AT_LEAST_VERSION(7, 19, 1)
    PG_RETURN_INT64(CURL_REDIR_POST_ALL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curl_redir_post_all requires curl 7.19.1 or later")));
#endif
}

EXTENSION(pg_curl_netrc_optional) { PG_RETURN_INT64(CURL_NETRC_OPTIONAL); }
EXTENSION(pg_curl_netrc_ignored) { PG_RETURN_INT64(CURL_NETRC_IGNORED); }
EXTENSION(pg_curl_netrc_required) { PG_RETURN_INT64(CURL_NETRC_REQUIRED); }

EXTENSION(pg_curl_ipresolve_whatever) { PG_RETURN_INT64(CURL_IPRESOLVE_WHATEVER); }
EXTENSION(pg_curl_ipresolve_v4) { PG_RETURN_INT64(CURL_IPRESOLVE_V4); }
EXTENSION(pg_curl_ipresolve_v6) { PG_RETURN_INT64(CURL_IPRESOLVE_V6); }

EXTENSION(pg_curl_het_default) {
#ifdef CURL_HET_DEFAULT
    PG_RETURN_INT64(CURL_HET_DEFAULT);
#else
    ereport(ERROR, (errcode(ERRCODE_UNDEFINED_FUNCTION), errmsg("CURL_HET_DEFAULT undefined")));
#endif
}

EXTENSION(pg_curlgssapi_delegation_flag) {
#if CURL_AT_LEAST_VERSION(7, 22, 0)
    PG_RETURN_INT64(CURLGSSAPI_DELEGATION_FLAG);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlgssapi_delegation_flag requires curl 7.22.0 or later")));
#endif
}
EXTENSION(pg_curlgssapi_delegation_policy_flag) {
#if CURL_AT_LEAST_VERSION(7, 22, 0)
    PG_RETURN_INT64(CURLGSSAPI_DELEGATION_POLICY_FLAG);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlgssapi_delegation_policy_flag requires curl 7.22.0 or later")));
#endif
}
EXTENSION(pg_curlgssapi_delegation_none) {
#if CURL_AT_LEAST_VERSION(7, 22, 0)
    PG_RETURN_INT64(CURLGSSAPI_DELEGATION_NONE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlgssapi_delegation_none requires curl 7.22.0 or later")));
#endif
}

EXTENSION(pg_curlftpssl_ccc_none) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    PG_RETURN_INT64(CURLFTPSSL_CCC_NONE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpssl_ccc_none requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curlftpssl_ccc_passive) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    PG_RETURN_INT64(CURLFTPSSL_CCC_PASSIVE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpssl_ccc_passive requires curl 7.16.1 or later")));
#endif
}
EXTENSION(pg_curlftpssl_ccc_active) {
#if CURL_AT_LEAST_VERSION(7, 16, 1)
    PG_RETURN_INT64(CURLFTPSSL_CCC_ACTIVE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpssl_ccc_active requires curl 7.16.1 or later")));
#endif
}

EXTENSION(pg_curlftpauth_default) {
#if CURL_AT_LEAST_VERSION(7, 12, 2)
    PG_RETURN_INT64(CURLFTPAUTH_DEFAULT);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpauth_default requires curl 7.12.2 or later")));
#endif
}
EXTENSION(pg_curlftpauth_ssl) {
#if CURL_AT_LEAST_VERSION(7, 12, 2)
    PG_RETURN_INT64(CURLFTPAUTH_SSL);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpauth_ssl requires curl 7.12.2 or later")));
#endif
}
EXTENSION(pg_curlftpauth_tls) {
#if CURL_AT_LEAST_VERSION(7, 12, 2)
    PG_RETURN_INT64(CURLFTPAUTH_TLS);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpauth_tls requires curl 7.12.2 or later")));
#endif
}

EXTENSION(pg_curlftpmethod_multicwd) {
#if CURL_AT_LEAST_VERSION(7, 15, 1)
    PG_RETURN_INT64(CURLFTPMETHOD_MULTICWD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpmethod_multicwd requires curl 7.15.1 or later")));
#endif
}
EXTENSION(pg_curlftpmethod_nocwd) {
#if CURL_AT_LEAST_VERSION(7, 15, 1)
    PG_RETURN_INT64(CURLFTPMETHOD_NOCWD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpmethod_nocwd requires curl 7.15.1 or later")));
#endif
}
EXTENSION(pg_curlftpmethod_singlecwd) {
#if CURL_AT_LEAST_VERSION(7, 15, 1)
    PG_RETURN_INT64(CURLFTPMETHOD_SINGLECWD);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftpmethod_singlecwd requires curl 7.15.1 or later")));
#endif
}

EXTENSION(pg_curlftp_create_dir) {
#if CURL_AT_LEAST_VERSION(7, 10, 7)
    PG_RETURN_INT64(CURLFTP_CREATE_DIR);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftp_create_dir requires curl 7.10.7 or later")));
#endif
}
EXTENSION(pg_curlftp_create_dir_retry) {
#if CURL_AT_LEAST_VERSION(7, 19, 4)
    PG_RETURN_INT64(CURLFTP_CREATE_DIR_RETRY);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftp_create_dir_retry requires curl 7.19.4 or later")));
#endif
}
EXTENSION(pg_curlftp_create_dir_none) {
#if CURL_AT_LEAST_VERSION(7, 10, 7)
    PG_RETURN_INT64(CURLFTP_CREATE_DIR_NONE);
#else
    ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("curlftp_create_dir_none requires curl 7.10.7 or later")));
#endif
}

EXTENSION(pg_curl_max_write_size) {
#ifdef CURL_MAX_WRITE_SIZE
    PG_RETURN_INT64(CURL_MAX_WRITE_SIZE);
#else
    ereport(ERROR, (errcode(ERRCODE_UNDEFINED_FUNCTION), errmsg("CURL_MAX_WRITE_SIZE undefined")));
#endif
}

void _PG_init(void); void _PG_init(void) {
    pg_whitelist_init("pg_curl.whitelist");
#if PG_VERSION_NUM >= 90500
    DefineCustomBoolVariable("pg_curl.transaction", "pg_curl transaction", "Use transaction context?", &pg_curl.transaction, true, PGC_USERSET, 0, NULL, NULL, NULL);
#endif
}