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Memory pool fixes and code cleanup

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This commit is contained in:
brenosilva
2011-04-03 03:57:02 +00:00
parent 82a9652ae9
commit 0d32c17c30
6 changed files with 47 additions and 71 deletions
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99
apache2/re_operators.c
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@@ -86,8 +86,6 @@ static int msre_op_nomatch_execute(modsec_rec *msr, msre_rule *rule,
* \retval 0 On Fail
*/
static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
const char *errptr = NULL;
int erroffset = 0;
char *data = NULL;
const char *str = NULL;
char *saved = NULL;
@@ -115,15 +113,13 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
parse_regex = pcre_compile(PARSE_REGEX_IP, opts, &eb, &eo, NULL);
if(parse_regex == NULL) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Error compiling ipmatch operator regex",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Error compiling ipmatch operator regex");
return 0;
}
parse_regex_study = pcre_study(parse_regex, 0, &eb);
if(eb != NULL) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Error ipmatch operator: pcre_study",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Error ipmatch operator: pcre_study");
if(parse_regex != NULL) pcre_free(parse_regex);
return 0;
}
@@ -131,8 +127,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
data = apr_pstrdup(rule->ruleset->mp, rule->op_param);
if(strlen(data) < 7) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Size is too small. Must enter at least an ip address",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Size is too small. Must enter at least an ip address");
if(parse_regex != NULL) pcre_free(parse_regex);
return 0;
@@ -145,8 +140,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
ret = pcre_exec(parse_regex, parse_regex_study, str, strlen(str),
0, 0, ov, MAX_SUBSTRINGS);
if (ret < 1) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Error ipmatch operator: pcre_exec",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Error ipmatch operator: pcre_exec");
if(parse_regex != NULL) pcre_free(parse_regex);
return 0;
}
@@ -156,8 +150,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
res = pcre_get_substring((char *)str, ov, MAX_SUBSTRINGS,i + 1,
&str_ptr);
if (res < 0) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Error ipmatch operator: pcre_get_substring",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Error ipmatch operator: pcre_get_substring");
if(parse_regex != NULL) pcre_free(parse_regex);
return 0;
}
@@ -180,8 +173,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
if(ipv == 4) {
if (!inet_aton(str_ptr,&addr)) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip address",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip address");
if(parse_regex != NULL) pcre_free(parse_regex);
return 0;
}
@@ -190,8 +182,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
broadcast = ntohl(addr.s_addr) + 1;
} else if (ipv == 6) {
if (inet_pton(AF_INET6, str_ptr, &(sa.sin6_addr)) != 1) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip address",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip address");
if(parse_regex != NULL) pcre_free(parse_regex);
return 0;
}
@@ -259,7 +250,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
}
} else {
*mask++;
mask++;
maskbits = atoi(mask);
network = 0;
broadcast = 0;
@@ -279,8 +270,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
} else if (ipv == 6) {
if (inet_pton(AF_INET6, str_ptr, &(sa.sin6_addr)) != 1) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip address",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip address");
if(parse_regex != NULL) pcre_free(parse_regex);
return 0;
}
@@ -376,8 +366,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
}
rule->ip_op->next = NULL;
} else {
*error_msg = apr_psprintf(rule->ruleset->mp, "Error allocating list for ip match",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Error allocating list for ip match");
if(parse_regex != NULL) pcre_free(parse_regex);
return 0;
}
@@ -412,8 +401,7 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
curr_ipmatch->next = ipdata;
} else {
*error_msg = apr_psprintf(rule->ruleset->mp, "Error allocating memory for ip data",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Error allocating memory for ip data");
}
}
@@ -436,8 +424,6 @@ static int msre_op_ipmatch_param_init(msre_rule *rule, char **error_msg) {
* \retval 0 On No Match
*/
static int msre_op_ipmatch_execute(modsec_rec *msr, msre_rule *rule, msre_var *var, char **error_msg) {
const char *errptr = NULL;
int erroffset=0;
struct in_addr addr;
struct sockaddr_in6 sa;
unsigned long ipaddr;
@@ -453,8 +439,7 @@ static int msre_op_ipmatch_execute(modsec_rec *msr, msre_rule *rule, msre_var *v
}
if (!inet_aton(var->value,&addr)) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip address",
erroffset, errptr);
*error_msg = apr_psprintf(msr->mp, "Invalid ip address");
return -1;
}
@@ -464,8 +449,7 @@ static int msre_op_ipmatch_execute(modsec_rec *msr, msre_rule *rule, msre_var *v
if(ipdata->type == 4) {
if (!inet_aton(var->value,&addr)) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip address",
erroffset, errptr);
*error_msg = apr_psprintf(msr->mp, "Invalid ip address");
return -1;
}
@@ -476,8 +460,7 @@ static int msre_op_ipmatch_execute(modsec_rec *msr, msre_rule *rule, msre_var *v
} else if (ipdata->type == 6) {
if (inet_pton(AF_INET6, var->value, &(sa.sin6_addr)) != 1) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Invalid ip6 address",
erroffset, errptr);
*error_msg = apr_psprintf(msr->mp, "Invalid ip6 address");
return -1;
}
@@ -542,8 +525,6 @@ static char *param_remove_escape(msre_rule *rule, char *str, int len) {
* \retval 0 On Fail
*/
static int msre_op_rsub_param_init(msre_rule *rule, char **error_msg) {
const char *errptr = NULL;
int erroffset = 0;
ap_regex_t *regex;
const char *pattern = NULL;
const char *line = NULL;
@@ -562,8 +543,7 @@ static int msre_op_rsub_param_init(msre_rule *rule, char **error_msg) {
line = rule->op_param;
if (apr_tolower(*line) != 's') {
*error_msg = apr_psprintf(rule->ruleset->mp, "Error rsub operator format, must be s/ pattern",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Error rsub operator format, must be s/ pattern");
return 0;
}
@@ -617,8 +597,7 @@ static int msre_op_rsub_param_init(msre_rule *rule, char **error_msg) {
}
if (!delim || !reg_pattern || !replace) {
*error_msg = apr_psprintf(rule->ruleset->mp, "Error rsub operator format - must be s/regex/str/[flags]",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Error rsub operator format - must be s/regex/str/[flags]");
return -1;
}
@@ -633,8 +612,7 @@ static int msre_op_rsub_param_init(msre_rule *rule, char **error_msg) {
else if (delim == 'd')
rule->escape_re = 1;
else
*error_msg = apr_psprintf(rule->ruleset->mp, "Regex flag not supported",
erroffset, errptr);
*error_msg = apr_psprintf(rule->ruleset->mp, "Regex flag not supported");
flags++;
}
}
@@ -1317,7 +1295,7 @@ static int msre_op_pm_execute(modsec_rec *msr, msre_rule *rule, msre_var *var, c
/*
* \brief Verify function to gsbLookup operator
*
* \param rule Pointer to the rule
* \param msr Pointer to the modsec resource
* \param match Pointer to input data
* \param match_length Input size
*
@@ -1325,7 +1303,7 @@ static int msre_op_pm_execute(modsec_rec *msr, msre_rule *rule, msre_var *var, c
* \retval 1 On Match
* \retval 0 On No Match
*/
static int verify_gsb(gsb_db *gsb, msre_rule *rule, const char *match, unsigned int match_length) {
static int verify_gsb(gsb_db *gsb, modsec_rec *msr, const char *match, unsigned int match_length) {
apr_md5_ctx_t ctx;
apr_status_t rc;
unsigned char digest[APR_MD5_DIGESTSIZE];
@@ -1341,7 +1319,7 @@ static int verify_gsb(gsb_db *gsb, msre_rule *rule, const char *match, unsigned
apr_md5_final(digest, &ctx);
hash = apr_psprintf(rule->ruleset->mp, "%s", bytes2hex(rule->ruleset->mp, digest, 16));
hash = apr_psprintf(msr->mp, "%s", bytes2hex(msr->mp, digest, 16));
if ((hash != NULL) && (gsb->gsb_table != NULL)) {
search = apr_table_get(gsb->gsb_table, hash);
@@ -1409,7 +1387,7 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
char *data = NULL;
unsigned int size = var->value_len;
char *base = NULL, *canon = NULL, *savedptr = NULL;
char *str = NULL, *entire = NULL;
char *str = NULL;
int capture;
if (error_msg == NULL) return -1;
@@ -1440,14 +1418,14 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
{
for(i = 0; i < rv; ++i)
{
match = apr_psprintf(rule->ruleset->mp, "%.*s", ovector[2*i+1] - ovector[2*i], data + ovector[2*i]);
match = apr_psprintf(msr->mp, "%.*s", ovector[2*i+1] - ovector[2*i], data + ovector[2*i]);
if (match == NULL) {
*error_msg = "Internal Error: cannot allocate memory for match.";
return -1;
}
match = remove_escape(rule->ruleset->mp, match, strlen(match));
match = remove_escape(msr->mp, match, strlen(match));
match_length = strlen(match);
@@ -1458,7 +1436,7 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
msr_log(msr, 4, "GSB: Successfully extracted url: %s", match);
}
ret = verify_gsb(gsb, rule, match, match_length);
ret = verify_gsb(gsb, msr, match, match_length);
if(ret > 0) {
set_match_to_tx(msr, capture, match, 0);
@@ -1479,7 +1457,7 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
/* append / in the end of full url */
if ((match[match_length -1] != '/') && (strchr(match,'?') == NULL)) {
canon = apr_psprintf(rule->ruleset->mp, "%s/", match);
canon = apr_psprintf(msr->mp, "%s/", match);
if (canon != NULL) {
if (msr->txcfg->debuglog_level >= 4) {
@@ -1487,7 +1465,7 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
}
canon_length = strlen(canon);
ret = verify_gsb(gsb, rule, canon, canon_length);
ret = verify_gsb(gsb, msr, canon, canon_length);
if(ret > 0) {
set_match_to_tx(msr, capture, match, 0);
@@ -1496,7 +1474,7 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
log_escape_nq(msr->mp, canon));
}
str = apr_pstrdup(rule->ruleset->mp,match);
str = apr_pstrdup(msr->mp,match);
base = apr_strtok(str,"/",&savedptr);
if(base != NULL)
@@ -1507,7 +1485,7 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
}
}
str = apr_pstrdup(rule->ruleset->mp,match);
str = apr_pstrdup(msr->mp,match);
/* base url */
if (str != NULL) {
@@ -1516,7 +1494,7 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
if (base != NULL && (strlen(match) != (strlen(base)+1))) {
canon = apr_psprintf(rule->ruleset->mp, "%s/", base);
canon = apr_psprintf(msr->mp, "%s/", base);
if (canon != NULL) {
@@ -1525,7 +1503,7 @@ static int msre_op_gsbLookup_execute(modsec_rec *msr, msre_rule *rule, msre_var
}
canon_length = strlen(canon);
ret = verify_gsb(gsb, rule, canon, canon_length);
ret = verify_gsb(gsb, msr, canon, canon_length);
if(ret > 0) {
set_match_to_tx(msr, capture, base, 0);
@@ -2363,12 +2341,11 @@ static int msre_op_verifyCC_execute(modsec_rec *msr, msre_rule *rule, msre_var *
*
* \param cpfnumber Pointer to cpf
* \param len cpf length
* \param rule Pointer to the rule
*
* \retval 0 On Invalid CPF
* \retval 1 On Valid CPF
*/
static int cpf_verify(const char *cpfnumber, int len, msre_rule *rule) {
static int cpf_verify(const char *cpfnumber, int len) {
int factor, part_1, part_2, var_len = len;
int sum = 0, i = 0, cpf_len = 11, c;
@@ -2549,7 +2526,7 @@ static int msre_op_verifyCPF_execute(modsec_rec *msr, msre_rule *rule, msre_var
offset = ovector[2*i];
/* Check CPF using the match string */
is_cpf = cpf_verify(match, length, rule);
is_cpf = cpf_verify(match, length);
/* Not a CPF number, then try another match where we left off. */
if (!is_cpf) {
@@ -2611,14 +2588,14 @@ static int msre_op_verifyCPF_execute(modsec_rec *msr, msre_rule *rule, msre_var
/*
* \brief Check for a valid SSN
*
* \param msr Pointer to the modsec resource
* \param ssnumber Pointer to ssn
* \param len ssn length
* \param rule Pointer to the rule
*
* \retval 0 On Invalid SSN
* \retval 1 On Valid SSN
*/
static int ssn_verify(const char *ssnumber, int len, msre_rule *rule) {
static int ssn_verify(modsec_rec *msr, const char *ssnumber, int len) {
int i;
int num[9];
int digits = 0;
@@ -2661,9 +2638,9 @@ static int ssn_verify(const char *ssnumber, int len, msre_rule *rule) {
if (digits == 8)
goto invalid;
str_area = apr_psprintf(rule->ruleset->mp,"%d%d%d",num[0],num[1],num[2]);
str_grp = apr_psprintf(rule->ruleset->mp,"%d%d",num[3],num[4]);
str_serial = apr_psprintf(rule->ruleset->mp,"%d%d%d%d",num[5],num[6],num[7],num[8]);
str_area = apr_psprintf(msr->mp,"%d%d%d",num[0],num[1],num[2]);
str_grp = apr_psprintf(msr->mp,"%d%d",num[3],num[4]);
str_serial = apr_psprintf(msr->mp,"%d%d%d%d",num[5],num[6],num[7],num[8]);
if(str_area == NULL || str_grp == NULL || str_serial == NULL)
goto invalid;
@@ -2788,7 +2765,7 @@ static int msre_op_verifySSN_execute(modsec_rec *msr, msre_rule *rule, msre_var
offset = ovector[2*i];
/* Check SSN using the match string */
is_ssn = ssn_verify(match, length, rule);
is_ssn = ssn_verify(msr, match, length);
/* Not a SSN number, then try another match where we left off. */
if (!is_ssn) {