s3:util: Pass a memory context to get_challenge for ntlm_auth tests

Fixes memory leaks detected by LeakSanitizer.

Signed-off-by: Andreas Schneider <[email protected]>
Reviewed-by: Anoop C S <[email protected]>

Author: cryptomilk

source3/utils/ntlm_auth.c

@@ -367,13 +367,13 @@ const char *get_winbind_netbios_name(void)
 
 }
 
-DATA_BLOB get_challenge(void)
+DATA_BLOB get_challenge(TALLOC_CTX *mem_ctx)
 {
 	static DATA_BLOB chal;
 	if (opt_challenge.length)
 		return opt_challenge;
 
-	chal = data_blob(NULL, 8);
+	chal = data_blob_talloc(mem_ctx, NULL, 8);
 
 	generate_random_buffer(chal.data, chal.length);
 	return chal;

source3/utils/ntlm_auth_diagnostics.c

@@ -60,7 +60,7 @@ static bool test_lm_ntlm_broken(enum ntlm_break break_which,
 	uchar user_session_key[16];
 	uchar lm_hash[16];
 	uchar nt_hash[16];
-	DATA_BLOB chall = get_challenge();
+	DATA_BLOB chall = get_challenge(talloc_tos());
 	char *error_string = NULL;
 
 	ZERO_STRUCT(lm_key);
@@ -199,7 +199,7 @@ static bool test_ntlm_in_lm(bool lanman_support_expected)
 	uchar lm_key[8];
 	uchar lm_hash[16];
 	uchar user_session_key[16];
-	DATA_BLOB chall = get_challenge();
+	DATA_BLOB chall = get_challenge(talloc_tos());
 	char *error_string = NULL;
 
 	ZERO_STRUCT(user_session_key);
@@ -291,7 +291,7 @@ static bool test_ntlm_in_both(bool lanman_support_expected)
 	uint8_t lm_hash[16];
 	uint8_t user_session_key[16];
 	uint8_t nt_hash[16];
-	DATA_BLOB chall = get_challenge();
+	DATA_BLOB chall = get_challenge(talloc_tos());
 	char *error_string = NULL;
 
 	ZERO_STRUCT(lm_key);
@@ -380,7 +380,7 @@ static bool test_lmv2_ntlmv2_broken(enum ntlm_break break_which)
 	DATA_BLOB names_blob = NTLMv2_generate_names_blob(NULL, get_winbind_netbios_name(), get_winbind_domain());
 	uint8_t authoritative = 1;
 	uchar user_session_key[16];
-	DATA_BLOB chall = get_challenge();
+	DATA_BLOB chall = get_challenge(talloc_tos());
 	char *error_string = NULL;
 
 	ZERO_STRUCT(user_session_key);

source3/utils/ntlm_auth_proto.h

@@ -28,7 +28,7 @@
 
 const char *get_winbind_domain(void);
 const char *get_winbind_netbios_name(void);
-DATA_BLOB get_challenge(void) ;
+DATA_BLOB get_challenge(TALLOC_CTX *mem_ctx) ;
 NTSTATUS contact_winbind_auth_crap(const char *username,
 				   const char *domain,
 				   const char *workstation,