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parse.c
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/* This file is part of "xtrace"
* Copyright (C) 2005,2006,2009,2010,2011 Bernhard R. Link
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <assert.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/time.h>
#include <limits.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/select.h>
#include <unistd.h>
#include <time.h>
#include <errno.h>
#include "xtrace.h"
#include "parse.h"
enum package_direction { TO_SERVER, TO_CLIENT };
static void startline(struct connection *c, enum package_direction d, const char *format, ...) FORMAT(printf,3,4);
const bool print_counts;
const bool print_offsets;
static inline unsigned int padded(unsigned int s) {
return (s+3)&(~3);
}
static void startline(struct connection *c, enum package_direction d, const char *format, ...) {
va_list ap;
struct timeval tv;
if( (print_timestamps || print_reltimestamps)
&& gettimeofday(&tv, NULL) == 0 ) {
if( print_timestamps )
fprintf(out, "%lu.%03u ", (unsigned long)tv.tv_sec,
(unsigned int)(tv.tv_usec/1000));
if( print_reltimestamps ) {
unsigned long long tt = ((unsigned long long)1000)*tv.tv_sec +
(tv.tv_usec/1000);
fprintf(out, "%lu.%03u ",
(unsigned long)((tt - c->starttime)/1000),
(unsigned int)((tt - c->starttime)%1000));
}
}
#ifdef HAVE_MONOTONIC_CLOCK
if( print_uptimestamps ) {
static bool already_warned = false;
struct timespec ts;
int i;
i = clock_gettime(CLOCK_MONOTONIC, &ts);
if( i == 0 ) {
fprintf(out, "%lu.%03u ",
(unsigned long)ts.tv_sec,
(unsigned int)(ts.tv_nsec/1000000L));
} else if (!already_warned) {
int e = errno;
fprintf(stderr, "Error %d from clock_gettime(CLOCK_MONOTIC,): %s\n",
e, strerror(e));
already_warned = true;
}
}
#endif
va_start(ap, format);
fprintf(out, "%03d:%c:", c->id, (d == TO_SERVER)?'<':'>');
vfprintf(out, format, ap);
va_end(ap);
}
#define U256 ((unsigned int)256)
#define UL256 ((unsigned long)256)
#define CARD16(bigendian,buffer,ofs) ((bigendian)?(buffer[ofs]*U256+buffer[ofs+1]):(buffer[ofs+1]*U256+buffer[ofs]))
#define CARD32(bigendian,buffer,ofs) ((bigendian)?(((buffer[ofs]*U256+buffer[ofs+1])*UL256+buffer[ofs+2])*UL256+buffer[ofs+3]):(buffer[ofs]+UL256*(buffer[ofs+1]+UL256*(buffer[ofs+2]+U256*buffer[ofs+3]))))
#define clientCARD32(ofs) CARD32(c->bigendian,c->clientbuffer,ofs)
#define clientCARD16(ofs) CARD16(c->bigendian,c->clientbuffer,ofs)
#define clientCARD8(ofs) c->clientbuffer[ofs]
#define serverCARD32(ofs) CARD32(c->bigendian,c->serverbuffer,ofs)
#define serverCARD16(ofs) CARD16(c->bigendian,c->serverbuffer,ofs)
#define serverCARD8(ofs) c->serverbuffer[ofs]
#define getCARD32(ofs) CARD32(c->bigendian,buffer,ofs)
#define getCARD16(ofs) CARD16(c->bigendian,buffer,ofs)
#define getCARD8(ofs) buffer[ofs]
#define getCARD32(ofs) CARD32(c->bigendian,buffer,ofs)
#define getBE32(ofs) (((buffer[ofs]*UL256+buffer[ofs+1])*UL256+buffer[ofs+2])*UL256+buffer[ofs+3])
struct usedextension {
struct usedextension *next;
const struct extension *extension;
unsigned char major_opcode;
unsigned char first_event;
unsigned char first_error;
};
void free_usedextensions(struct usedextension *e) {
while( e != NULL ) {
struct usedextension *h = e->next;
free(e);
e = h;
}
}
struct unknownextension {
struct unknownextension *next;
const char *name;
size_t namelen;
unsigned char major_opcode;
unsigned char first_event;
unsigned char first_error;
};
void free_unknownextensions(struct unknownextension *e) {
while( e != NULL ) {
struct unknownextension *h = e->next;
free(e);
e = h;
}
}
static struct unknownextension *register_unknown_extension(struct connection *c, const unsigned char *name, size_t namelen) {
const struct unknownextension *e;
struct unknownextension *n;
for( e = c->unknownextensions ; e != NULL ; e = e->next ) {
if( e->namelen != namelen )
continue;
if( strncmp((char*)name, e->name, namelen) != 0 )
continue;
return NULL;
}
for( n = c->waiting ; n != NULL ; n = n->next ) {
if( n->namelen != namelen )
continue;
if( strncmp((char*)name, n->name, namelen) != 0 )
continue;
return n;
}
n = malloc(sizeof(struct unknownextension));
if( n == NULL )
abort();
n->name = strndup((char*)name, namelen);
if( n->name == NULL )
abort();
n->namelen = namelen;
n->next = c->waiting;
c->waiting = n;
return n;
}
struct expectedreply {
struct expectedreply *next;
uint64_t seq;
const struct request *from;
enum datatype { dt_NONE = 0,
dt_UNKNOWN_EXTENSION, /* uextension used */
dt_EXTENSION, /* extension used */
dt_ATOM, /* atom used */
dt_CARD32, /* card32 used */
} data_type;
union {
void *data;
struct atom *atom;
const struct extension *extension;
struct unknownextension *uextension;
uint32_t card32;
} data;
unsigned long values[];
};
const struct extension *find_extension(const uint8_t *name,size_t len);
static void print_bitfield(const char *name,const struct constant *constants, unsigned long l){
const struct constant *c;
const char *zeroname = "0";
bool first = true;
/* bitmasks should have some */
assert(constants != NULL);
fprintf(out,"%s=",name);
for( c = constants; c->name != NULL ; c++ ) {
if( c->value == 0 )
zeroname = c->name;
else if( (l & c->value) != 0 ) {
if( !first )
putc(',',out);
first = false;
fputs(c->name,out);
}
}
if( first )
fputs(zeroname,out);
};
static const char *findConstant(const struct constant *constants, unsigned long l){
const struct constant *c;
if( constants == NULL )
return NULL;
for( c = constants; c->name != NULL ; c++ ) {
if( c->value == l )
return c->name;
}
return NULL;
};
#define OFS_LATER ((size_t)-1)
#define ROUND_32 ((size_t)-1)
#define ROUND { ROUND_32, "", ft_LASTMARKER, NULL}
static size_t printSTRING8(const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len,size_t ofs){
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( buflen - ofs <= len )
len = buflen - ofs;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s='",p->name);
while( len > 0 ) {
if( nr == maxshownlistlen ) {
fputs("'...",out);
} else if( nr < maxshownlistlen ) {
unsigned char c = getCARD8(ofs);
if( c == '\n' ) {
putc('\\',out);putc('n',out);
} else if( c == '\t' ) {
putc('\\',out);putc('t',out);
} else if( (c >= ' ' && c <= '~' ) )
putc(c,out);
else
fprintf(out,"\\%03hho", c);
}
ofs++;len--;nr++;
}
if( nr <= maxshownlistlen )
putc('\'',out);
return ofs;
}
static size_t printLISTofCARD8(const uint8_t *buffer, size_t buflen, const char *name, const struct constant *constants, size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( buflen - ofs <= len )
len = buflen - ofs;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out, "%s=", name);
while( len > 0 ) {
const char *value;
unsigned char u8;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
u8 = getCARD8(ofs);
value = findConstant(constants, u8);
if( value )
fprintf(out,"%s(0x%hhx)",value,u8);
else
fprintf(out,"0x%02hhx",u8);
}
len--;ofs++;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofCARD16(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/2 <= len )
len = (buflen - ofs)/2;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
uint16_t u16;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
u16 = getCARD16(ofs);
value = findConstant(p->o.constants, u16);
if( value )
fprintf(out,"%s(0x%hx)",value,(unsigned short int)u16);
else
fprintf(out,"0x%04hx",(unsigned short int)u16);
}
len--;ofs+=2;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofCARD32(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/4 <= len )
len = (buflen - ofs)/4;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
uint32_t u32;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
u32 = getCARD32(ofs);
value = findConstant(p->o.constants, u32);
if( value )
fprintf(out,"%s(0x%x)",value,(unsigned int)u32);
else
fprintf(out,"0x%08x",(unsigned int)u32);
}
len--;ofs+=4;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofFIXED(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/4 <= len )
len = (buflen - ofs)/4;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
int32_t i32;
double d;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
i32 = getCARD32(ofs);
d = i32 / 65536.0;
fprintf(out,"%.6f", d);
}
len--;ofs+=4;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofFIXED3232(struct connection *c, const uint8_t *buffer, size_t buflen, const struct parameter *p, size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/8 <= len )
len = (buflen - ofs)/8;
if( print_offsets )
fprintf(out,"[%d]", (int)ofs);
fprintf(out, "%s=", p->name);
while( len > 0 ) {
int32_t i32;
uint32_t u32;
double d;
if( nr == maxshownlistlen ) {
fputs(",...", out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',', out);
notfirst = true;
i32 = getCARD32(ofs);
u32 = getCARD32(ofs + 4);
d = i32 + (u32 / ((double)65536.0 * (double)65536.0)) ;
fprintf(out, "%.11f", d);
}
len--; ofs += 8; nr++;
}
putc(';', out);
return ofs;
}
static size_t printLISTofFLOAT32(struct connection *c, const uint8_t *buffer, size_t buflen, const struct parameter *p, size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/4 <= len )
len = (buflen - ofs)/4;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
uint32_t u32;
float f;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
u32 = getCARD32(ofs);
memcpy(&f, &u32, 4);
fprintf(out, "%f", f);
}
len--;ofs+=4;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofATOM(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/4 <= len )
len = (buflen - ofs)/4;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
uint32_t u32;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
u32 = getCARD32(ofs);
value = findConstant(p->o.constants, u32);
if( value )
fprintf(out,"%s(0x%x)",value,(unsigned int)u32);
else if( (value = getAtom(c,u32)) == NULL )
fprintf(out,"0x%x",(unsigned int)u32);
else
fprintf(out,"0x%x(\"%s\")",(unsigned int)u32,value);
}
len--;ofs+=4;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofINT8(const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( buflen - ofs <= len )
len = buflen - ofs;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
signed char i8;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
i8 = getCARD8(ofs);
value = findConstant(p->o.constants, i8);
if( value )
fprintf(out,"%s(%d)",value,(int)i8);
else
fprintf(out,"%d",(int)i8);
}
len--;ofs++;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofINT16(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/2 <= len )
len = (buflen - ofs)/2;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
int16_t i16;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
i16 = getCARD16(ofs);
value = findConstant(p->o.constants, i16);
if( value )
fprintf(out,"%s(%d)",value,(int)i16);
else
fprintf(out,"%d",(int)i16);
}
len--;ofs+=2;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofINT32(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/4 <= len )
len = (buflen - ofs)/4;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
int32_t i32;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
i32 = getCARD32(ofs);
value = findConstant(p->o.constants, i32);
if( value )
fprintf(out,"%s(%d)",value,(int)i32);
else
fprintf(out,"%d",(int)i32);
}
len--;ofs+=4;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofUINT8(const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( buflen - ofs <= len )
len = buflen - ofs;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
unsigned char u8;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
u8 = getCARD8(ofs);
value = findConstant(p->o.constants, u8);
if( value )
fprintf(out,"%s(%u)",value,(unsigned int)u8);
else
fprintf(out,"%u",(unsigned int)u8);
}
len--;ofs++;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofUINT16(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/2 <= len )
len = (buflen - ofs)/2;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
uint16_t u16;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
u16 = getCARD16(ofs);
value = findConstant(p->o.constants, u16);
if( value )
fprintf(out,"%s(%u)",value,(unsigned int)u16);
else
fprintf(out,"%u",(unsigned int)u16);
}
len--;ofs+=2;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofUINT32(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t len, size_t ofs){
bool notfirst = false;
size_t nr = 0;
if( buflen < ofs )
return ofs;
if( (buflen - ofs)/4 <= len )
len = (buflen - ofs)/4;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( len > 0 ) {
const char *value;
uint32_t u32;
if( nr == maxshownlistlen ) {
fputs(",...",out);
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
u32 = getCARD32(ofs);
value = findConstant(p->o.constants, u32);
if( value )
fprintf(out,"%s(%u)",value,(unsigned int)u32);
else
fprintf(out,"%u",(unsigned int)u32);
}
len--;ofs+=4;nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofVALUE(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *param,unsigned long valuemask, size_t ofs){
const struct value *v = param->o.values;
const char *atom;
bool notfirst = false;
assert( v != NULL );
if( ofs > buflen )
return ofs;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s={",param->name);
while( buflen > ofs && buflen-ofs >= 4 ) {
uint32_t u32; uint16_t u16; uint8_t u8;
int32_t i32; int16_t i16; int8_t i8;
const char *constant;
if( v->name == NULL ) /* EOV */
break;
if( (valuemask & v->flag) == 0 ) {
v++;
continue;
}
if( notfirst )
putc(' ',out);
notfirst = true;
/* this is funny, but that is the protocol... */
u32 = getCARD32(ofs); i32 = u32;
u16 = u32 & 65535; i16 = u16;
u8 = u32 & 255; i8 = u8;
if( v->type == ft_INT32_32 ) {
long long ll;
/* XSync suddenly has 64 bit values allowed in
* VALUES... */
if( buflen-ofs < 8 ) {
c++;
continue;
}
u32 = getCARD32(ofs + 4);
ll = (((long long)i32)<< 32LL) + (long long)u32;
fprintf(out, "%s=%lld", v->name, ll);
ofs += 8;v++;
continue;
}
if( v->type >= ft_BITMASK8 ) {
assert(v->type <= ft_BITMASK32 );
print_bitfield(v->name,v->constants,u32);
ofs += 4;v++;
continue;
}
assert( v->type < ft_STORE8 || v->type == ft_ATOM );
switch( (v->type==ft_ATOM)?2:(v->type % 3) ) {
case 0:
constant = findConstant(v->constants,u8);
break;
case 1:
constant = findConstant(v->constants,u16);
break;
default:
constant = findConstant(v->constants,u32);
break;
}
fputs(v->name,out);putc('=',out);
if( constant != NULL ) {
fputs(constant,out);
putc('(',out);
}
switch( v->type ) {
case ft_INT8:
fprintf(out,"%d",(int)i8);
break;
case ft_INT16:
fprintf(out,"%d",(int)i16);
break;
case ft_INT32:
fprintf(out,"%d",(int)i32);
break;
case ft_UINT8:
fprintf(out,"%u",(unsigned int)u8);
break;
case ft_UINT16:
fprintf(out,"%u",(unsigned int)u16);
break;
case ft_UINT32:
fprintf(out,"%u",(unsigned int)u32);
break;
case ft_ENUM8:
if( constant == NULL )
fputs("unknown:",out);
case ft_CARD8:
fprintf(out,"0x%02x",(unsigned int)u8);
break;
case ft_ENUM16:
if( constant == NULL )
fputs("unknown:",out);
case ft_CARD16:
fprintf(out,"0x%04x",(unsigned int)u16);
break;
case ft_ATOM:
fprintf(out,"0x%x",(unsigned int)u32);
atom = getAtom(c, u32);
if( atom != NULL )
fprintf(out,"(\"%s\")", atom);
break;
case ft_ENUM32:
if( constant == NULL )
fputs("unknown:",out);
case ft_CARD32:
fprintf(out,"0x%08x",(unsigned int)u32);
break;
default:
assert(0);
}
if( constant != NULL ) {
putc(')',out);
}
ofs += 4; v++;
}
putc('}',out);
/* TODO: print error if flags left or v!=EOV? */
return ofs;
}
struct stack {
unsigned long *base;
int num;
int ofs;
};
static unsigned long getFromStack(struct stack *stack, size_t depth) {
assert(stack != NULL && stack->ofs > (int)depth );
return stack->base[stack->ofs - 1 - depth];
}
static void push(struct stack *stack, unsigned long value) {
stack->base[stack->ofs] = value;
stack->ofs++;
assert(stack->ofs<stack->num);
}
static void pop(struct stack *stack UNUSED, struct stack *oldstack UNUSED) {
}
static size_t print_parameters(struct connection *c, const unsigned char *buffer, unsigned int len, const struct parameter *parameters, bool bigrequest, struct stack *oldstack, bool returnstack);
static size_t printLISTofStruct(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t count, size_t ofs, struct stack *stack){
bool notfirst = false;
const struct parameter *substruct = p->o.parameters;
size_t len;
size_t nr = 0;
/* and the first item includes the length of an item */
assert( substruct != NULL && substruct->name == NULL && substruct->offse > 0);
len = substruct->offse;
substruct++;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( buflen > ofs && buflen-ofs >= len && count > 0) {
if( nr == maxshownlistlen ) {
fputs(",...",out);
if( len == 0 )
ofs = SIZE_MAX;
break;
} else if( nr < maxshownlistlen ) {
if( notfirst )
putc(',',out);
notfirst = true;
putc('{',out);
print_parameters(c, buffer+ofs, len, substruct, false,
stack, false);
putc('}',out);
}
ofs += len; count--; nr++;
}
putc(';',out);
return ofs;
}
static size_t printLISTofVarStruct(struct connection *c,const uint8_t *buffer,size_t buflen,const struct parameter *p,size_t count, size_t ofs, struct stack *stack){
bool notfirst = false;
// size_t ofs = (p->offset<0)?lastofs:p->offset;
const struct parameter *substruct = p->o.parameters;
size_t len;
size_t nr = 0;
/* in this case this is only the minimum value */
assert( substruct != NULL && substruct->name == NULL && substruct->offse > 0);
len = substruct->offse;
substruct++;
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
fprintf(out,"%s=",p->name);
while( buflen > ofs && buflen-ofs >= len && count > 0) {
size_t lentoadd;
if( nr >= maxshownlistlen ) {
fputs(",...;",out);
/* there is nothing here to calculate the rest,
* so just return the unreachable */
return SIZE_MAX;
}
if( notfirst ) {
putc(',',out);
if( print_offsets )
fprintf(out,"[%d]",(int)ofs);
}
notfirst = true;
putc('{',out);
lentoadd = print_parameters(c, buffer+ofs, buflen-ofs,
substruct, false, stack, false);
putc('}',out);
ofs += lentoadd; count--; nr++;
}
putc(';',out);
return ofs;
}
/* buffer must have at least 32 valid bytes */
static const struct event *find_event(struct connection *c, const unsigned char *buffe, const char **extension_name);
static void print_event_data(struct connection *c, const unsigned char *buffer, size_t len, const struct event *event, const char *extension);
static inline void print_event(struct connection *c, const unsigned char *buffer, size_t len) {
const struct event *event;
const char *name;
size_t l;
event = find_event(c, buffer, &name);
if( event != NULL && event->type == event_xge)
l = 32 + 4*getCARD32(4);
else
l = 32;
if( len < l ) {
// TODO: warn about incomplete?
return;
}
print_event_data(c, buffer, l, event, name);
}
static size_t print_parameters(struct connection *c, const unsigned char *buffer, unsigned int len, const struct parameter *parameters, bool bigrequest, struct stack *oldstack, bool returnstack) {
const struct parameter *p;
unsigned long stored = INT_MAX;
unsigned char format = 0;
bool printspace = false;
size_t lastofs = 0;
struct stack newstack = *oldstack;
bool sizeset = false;
for( p = parameters; p->name != NULL; p++ ) {
size_t s;
int8_t i8; int16_t i16; int32_t i32;
uint32_t uu;
#ifdef STUPIDCC
uint8_t u8=0; uint16_t u16=0; uint32_t u32=0;
unsigned long l=0;
#else
uint8_t u8; uint16_t u16; uint32_t u32;
unsigned long l;
#endif
size_t ofs;
const char *value;
const char *atom;
double d;
float f;
long long ll;
if( p->offse == OFS_LATER )
ofs = lastofs;
else if( bigrequest && p->offse >= 4 )
/* jump over 32 bit extended length */
ofs = p->offse+4;
else
ofs = p->offse;
if( p->type == ft_IF8 ) {
unsigned char v;