/*
* ModSecurity for Apache 2.x, http://www.modsecurity.org/
* Copyright (c) 2004-2013 Trustwave Holdings, Inc. (http://www.trustwave.com/)
*
* You may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* If any of the files related to licensing are missing or if you have any
* other questions related to licensing please contact Trustwave Holdings, Inc.
* directly using the email address security@modsecurity.org.
*/
#include <stdlib.h>
#include "apr_global_mutex.h"
#include "modsecurity.h"
#include "msc_parsers.h"
#include "msc_util.h"
#include "msc_json.h"
#include "msc_xml.h"
#include "apr_version.h"
#ifdef WITH_CURL
#include <curl/curl.h>
#endif
unsigned long int DSOLOCAL unicode_codepage = 0;
int DSOLOCAL *unicode_map_table = NULL;
/**
* Format an alert message.
*/
const char * msc_alert_message(modsec_rec *msr, msre_actionset *actionset, const char *action_message,
const char *rule_message)
{
const char *message = NULL;
if (rule_message == NULL) rule_message = "Unknown error.";
if (action_message == NULL) {
message = apr_psprintf(msr->mp, "%s%s",
rule_message, msre_format_metadata(msr, actionset));
}
else {
message = apr_psprintf(msr->mp, "%s %s%s", action_message,
rule_message, msre_format_metadata(msr, actionset));
}
return message;
}
/**
* Log an alert message to the log, adding the rule metadata at the end.
*/
void msc_alert(modsec_rec *msr, int level, msre_actionset *actionset, const char *action_message,
const char *rule_message)
{
const char *message = msc_alert_message(msr, actionset, action_message, rule_message);
msr_log(msr, level, "%s", message);
}
#if 0
/**
* Return phase name associated with the given phase number.
*/
static const char *phase_name(int phase) {
switch(phase) {
case 1 :
return "REQUEST_HEADERS";
break;
case 2 :
return "REQUEST_BODY";
break;
case 3 :
return "RESPONSE_HEADERS";
break;
case 4 :
return "RESPONSE_BODY";
break;
case 5 :
return "LOGGING";
break;
}
return "INVALID";
}
#endif
/**
* Creates and initialises a ModSecurity engine instance.
*/
msc_engine *modsecurity_create(apr_pool_t *mp, int processing_mode) {
msc_engine *msce = NULL;
msce = apr_pcalloc(mp, sizeof(msc_engine));
if (msce == NULL) return NULL;
msce->mp = mp;
msce->processing_mode = processing_mode;
msce->msre = msre_engine_create(msce->mp);
if (msce->msre == NULL) return NULL;
msre_engine_register_default_variables(msce->msre);
msre_engine_register_default_operators(msce->msre);
msre_engine_register_default_tfns(msce->msre);
msre_engine_register_default_actions(msce->msre);
// TODO: msre_engine_register_default_reqbody_processors(msce->msre);
return msce;
}
/**
* Initialise the modsecurity engine. This function must be invoked
* after configuration processing is complete as Apache needs to know the
* username it is running as.
*/
int modsecurity_init(msc_engine *msce, apr_pool_t *mp) {
apr_status_t rc;
/**
* Notice that curl is initialized here but never cleaned up. First version
* of this implementation curl was initialized and cleaned for every
* utilization. Turns out that it was not only cleaning stuff that was
* utilized by Curl but also other OpenSSL stuff that was utilized by
* mod_ssl leading the SSL support to crash.
*/
#ifdef WITH_CURL
curl_global_init(CURL_GLOBAL_ALL);
#endif
/* Serial audit log mutext */
rc = apr_global_mutex_create(&msce->auditlog_lock, NULL, APR_LOCK_DEFAULT, mp);
if (rc != APR_SUCCESS) {
//ap_log_error(APLOG_MARK, APLOG_ERR, rv, s, "mod_security: Could not create modsec_auditlog_lock");
//return HTTP_INTERNAL_SERVER_ERROR;
return -1;
}
#if !defined(MSC_TEST)
#ifdef __SET_MUTEX_PERMS
#if AP_SERVER_MAJORVERSION_NUMBER > 1 && AP_SERVER_MINORVERSION_NUMBER > 2
rc = ap_unixd_set_global_mutex_perms(msce->auditlog_lock);
#else
rc = unixd_set_global_mutex_perms(msce->auditlog_lock);
#endif
if (rc != APR_SUCCESS) {
// ap_log_error(APLOG_MARK, APLOG_ERR, rc, s, "mod_security: Could not set permissions on modsec_auditlog_lock; check User and Group directives");
// return HTTP_INTERNAL_SERVER_ERROR;
return -1;
}
#endif /* SET_MUTEX_PERMS */
rc = apr_global_mutex_create(&msce->geo_lock, NULL, APR_LOCK_DEFAULT, mp);
if (rc != APR_SUCCESS) {
return -1;
}
#ifdef __SET_MUTEX_PERMS
#if AP_SERVER_MAJORVERSION_NUMBER > 1 && AP_SERVER_MINORVERSION_NUMBER > 2
rc = ap_unixd_set_global_mutex_perms(msce->geo_lock);
#else
rc = unixd_set_global_mutex_perms(msce->geo_lock);
#endif
if (rc != APR_SUCCESS) {
return -1;
}
#endif /* SET_MUTEX_PERMS */
#ifdef GLOBAL_COLLECTION_LOCK
rc = apr_global_mutex_create(&msce->dbm_lock, NULL, APR_LOCK_DEFAULT, mp);
if (rc != APR_SUCCESS) {
return -1;
}
#ifdef __SET_MUTEX_PERMS
#if AP_SERVER_MAJORVERSION_NUMBER > 1 && AP_SERVER_MINORVERSION_NUMBER > 2
rc = ap_unixd_set_global_mutex_perms(msce->dbm_lock);
#else
rc = unixd_set_global_mutex_perms(msce->dbm_lock);
#endif
if (rc != APR_SUCCESS) {
return -1;
}
#endif /* SET_MUTEX_PERMS */
#endif
#endif
return 1;
}
/**
* Performs per-child (new process) initialisation.
*/
void modsecurity_child_init(msc_engine *msce) {
/* Need to call this once per process before any other XML calls. */
xmlInitParser();
if (msce->auditlog_lock != NULL) {
apr_status_t rc = apr_global_mutex_child_init(&msce->auditlog_lock, NULL, msce->mp);
if (rc != APR_SUCCESS) {
// ap_log_error(APLOG_MARK, APLOG_ERR, rs, s, "Failed to child-init auditlog mutex");
}
}
if (msce->geo_lock != NULL) {
apr_status_t rc = apr_global_mutex_child_init(&msce->geo_lock, NULL, msce->mp);
if (rc != APR_SUCCESS) {
// ap_log_error(APLOG_MARK, APLOG_ERR, rs, s, "Failed to child-init geo mutex");
}
}
#ifdef GLOBAL_COLLECTION_LOCK
if (msce->dbm_lock != NULL) {
apr_status_t rc = apr_global_mutex_child_init(&msce->dbm_lock, NULL, msce->mp);
if (rc != APR_SUCCESS) {
// ap_log_error(APLOG_MARK, APLOG_ERR, rs, s, "Failed to child-init dbm mutex");
}
}
#endif
}
/**
* Releases resources held by engine instance.
*/
void modsecurity_shutdown(msc_engine *msce) {
if (msce == NULL) return;
}
/**
*
*/
static void modsecurity_persist_data(modsec_rec *msr) {
const apr_array_header_t *arr;
apr_table_entry_t *te;
apr_time_t time_before, time_after;
int i;
time_before = apr_time_now();
/* Collections, store & remove stale. */
arr = apr_table_elts(msr->collections);
te = (apr_table_entry_t *)arr->elts;
for (i = 0; i < arr->nelts; i++) {
apr_table_t *col = (apr_table_t *)te[i].val;
/* Only store those collections that changed. */
if (apr_table_get(msr->collections_dirty, te[i].key)) {
collection_store(msr, col);
}
}
time_after = apr_time_now();
msr->time_storage_write += time_after - time_before;
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Recording persistent data took %" APR_TIME_T_FMT
" microseconds.", msr->time_gc);
}
/* Remove stale collections. */
#if AP_SERVER_MAJORVERSION_NUMBER > 1 && AP_SERVER_MINORVERSION_NUMBER > 3
if (ap_random_pick(0, RAND_MAX) < RAND_MAX/100) {
#else
if (rand() < RAND_MAX/100) {
#endif
arr = apr_table_elts(msr->collections);
te = (apr_table_entry_t *)arr->elts;
for (i = 0; i < arr->nelts; i++) {
collections_remove_stale(msr, te[i].key);
}
msr->time_gc = apr_time_now() - time_after;
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Garbage collection took %" APR_TIME_T_FMT
" microseconds.", msr->time_gc);
}
}
}
/**
*
*/
static apr_status_t modsecurity_tx_cleanup(void *data) {
modsec_rec *msr = (modsec_rec *)data;
char *my_error_msg = NULL;
if (msr == NULL) return APR_SUCCESS;
/* Multipart processor cleanup. */
if (msr->mpd != NULL) multipart_cleanup(msr);
/* XML processor cleanup. */
if (msr->xml != NULL) xml_cleanup(msr);
#ifdef WITH_YAJL
/* JSON processor cleanup. */
if (msr->json != NULL) json_cleanup(msr);
#endif
// TODO: Why do we ignore return code here?
modsecurity_request_body_clear(msr, &my_error_msg);
if (my_error_msg != NULL) {
msr_log(msr, 1, "%s", my_error_msg);
}
if (msr->msc_full_request_length > 0 &&
msr->msc_full_request_buffer != NULL) {
msr->msc_full_request_length = 0;
free(msr->msc_full_request_buffer);
}
#if defined(WITH_LUA)
#ifdef CACHE_LUA
if(msr->L != NULL) lua_close(msr->L);
#endif
#endif
return APR_SUCCESS;
}
/**
*
*/
apr_status_t modsecurity_tx_init(modsec_rec *msr) {
const char *s = NULL;
const apr_array_header_t *arr;
char *semicolon = NULL;
char *comma = NULL;
apr_table_entry_t *te;
int i;
/* Register TX cleanup */
apr_pool_cleanup_register(msr->mp, msr, modsecurity_tx_cleanup, apr_pool_cleanup_null);
/* Initialise C-L */
msr->request_content_length = -1;
s = apr_table_get(msr->request_headers, "Content-Length");
if (s != NULL) {
msr->request_content_length = strtol(s, NULL, 10);
}
/* Figure out whether this request has a body */
msr->reqbody_chunked = 0;
msr->reqbody_should_exist = 0;
if (msr->request_content_length == -1) {
/* There's no C-L, but is chunked encoding used? */
char *transfer_encoding = (char *)apr_table_get(msr->request_headers, "Transfer-Encoding");
if ((transfer_encoding != NULL)&&(m_strcasestr(transfer_encoding, "chunked") != NULL)) {
msr->reqbody_should_exist = 1;
msr->reqbody_chunked = 1;
}
} else {
/* C-L found */
msr->reqbody_should_exist = 1;
}
/* Initialise C-T */
msr->request_content_type = NULL;
s = apr_table_get(msr->request_headers, "Content-Type");
if (s != NULL) msr->request_content_type = s;
/* Decide what to do with the request body. */
if ((msr->request_content_type != NULL)
&& (strncasecmp(msr->request_content_type, "application/x-www-form-urlencoded", 33) == 0))
{
/* Always place POST requests with
* "application/x-www-form-urlencoded" payloads in memory.
*/
msr->msc_reqbody_storage = MSC_REQBODY_MEMORY;
msr->msc_reqbody_spilltodisk = 0;
msr->msc_reqbody_processor = "URLENCODED";
} else {
/* If the C-L is known and there's more data than
* our limit go to disk straight away.
*/
if ((msr->request_content_length != -1)
&& (msr->request_content_length > msr->txcfg->reqbody_inmemory_limit))
{
msr->msc_reqbody_storage = MSC_REQBODY_DISK;
}
/* In all other cases, try using the memory first
* but switch over to disk for larger bodies.
*/
msr->msc_reqbody_storage = MSC_REQBODY_MEMORY;
msr->msc_reqbody_spilltodisk = 1;
if (msr->request_content_type != NULL) {
if (strncasecmp(msr->request_content_type, "multipart/form-data", 19) == 0) {
msr->msc_reqbody_processor = "MULTIPART";
}
}
}
/* Check if we are forcing buffering, then use memory only. */
if (msr->txcfg->reqbody_buffering != REQUEST_BODY_FORCEBUF_OFF) {
msr->msc_reqbody_storage = MSC_REQBODY_MEMORY;
msr->msc_reqbody_spilltodisk = 0;
}
/* Initialise arguments */
msr->arguments = apr_table_make(msr->mp, 32);
if (msr->arguments == NULL) return -1;
if (msr->query_string != NULL) {
int invalid_count = 0;
if (parse_arguments(msr, msr->query_string, strlen(msr->query_string),
msr->txcfg->argument_separator, "QUERY_STRING", msr->arguments,
&invalid_count) < 0)
{
msr_log(msr, 1, "Initialisation: Error occurred while parsing QUERY_STRING arguments.");
return -1;
}
if (invalid_count) {
msr->urlencoded_error = 1;
}
}
msr->arguments_to_sanitize = apr_table_make(msr->mp, 16);
if (msr->arguments_to_sanitize == NULL) return -1;
msr->request_headers_to_sanitize = apr_table_make(msr->mp, 16);
if (msr->request_headers_to_sanitize == NULL) return -1;
msr->response_headers_to_sanitize = apr_table_make(msr->mp, 16);
if (msr->response_headers_to_sanitize == NULL) return -1;
msr->pattern_to_sanitize = apr_table_make(msr->mp, 32);
if (msr->pattern_to_sanitize == NULL) return -1;
/* remove targets */
msr->removed_targets = apr_table_make(msr->mp, 16);
if (msr->removed_targets == NULL) return -1;
/* Initialise cookies */
msr->request_cookies = apr_table_make(msr->mp, 16);
if (msr->request_cookies == NULL) return -1;
/* Initialize matched vars */
msr->matched_vars = apr_table_make(msr->mp, 8);
if (msr->matched_vars == NULL) return -1;
apr_table_clear(msr->matched_vars);
msr->perf_rules = apr_table_make(msr->mp, 8);
if (msr->perf_rules == NULL) return -1;
apr_table_clear(msr->perf_rules);
/* Locate the cookie headers and parse them */
arr = apr_table_elts(msr->request_headers);
te = (apr_table_entry_t *)arr->elts;
for (i = 0; i < arr->nelts; i++) {
if (strcasecmp(te[i].key, "Cookie") == 0) {
if (msr->txcfg->cookie_format == COOKIES_V0) {
semicolon = apr_pstrdup(msr->mp, te[i].val);
while((*semicolon != 0)&&(*semicolon != ';')) semicolon++;
if(*semicolon == ';') {
parse_cookies_v0(msr, te[i].val, msr->request_cookies, ";");
} else {
comma = apr_pstrdup(msr->mp, te[i].val);
while((*comma != 0)&&(*comma != ',')) comma++;
if(*comma == ',') {
comma++;
if(*comma == 0x20) {// looks like comma is the separator
if (msr->txcfg->debuglog_level >= 5) {
msr_log(msr, 5, "Cookie v0 parser: Using comma as a separator. Semi-colon was not identified!");
}
parse_cookies_v0(msr, te[i].val, msr->request_cookies, ",");
} else {
parse_cookies_v0(msr, te[i].val, msr->request_cookies, ";");
}
} else {
parse_cookies_v0(msr, te[i].val, msr->request_cookies, ";");
}
}
} else {
parse_cookies_v1(msr, te[i].val, msr->request_cookies);
}
}
}
/* Collections. */
msr->tx_vars = apr_table_make(msr->mp, 32);
if (msr->tx_vars == NULL) return -1;
msr->geo_vars = apr_table_make(msr->mp, 8);
if (msr->geo_vars == NULL) return -1;
msr->collections_original = apr_table_make(msr->mp, 8);
if (msr->collections_original == NULL) return -1;
msr->collections = apr_table_make(msr->mp, 8);
if (msr->collections == NULL) return -1;
msr->collections_dirty = apr_table_make(msr->mp, 8);
if (msr->collections_dirty == NULL) return -1;
/* Other */
msr->tcache = NULL;
msr->tcache_items = 0;
msr->matched_rules = apr_array_make(msr->mp, 16, sizeof(void *));
if (msr->matched_rules == NULL) return -1;
msr->matched_var = (msc_string *)apr_pcalloc(msr->mp, sizeof(msc_string));
if (msr->matched_var == NULL) return -1;
msr->highest_severity = 255; /* high, invalid value */
msr->removed_rules = apr_array_make(msr->mp, 16, sizeof(char *));
if (msr->removed_rules == NULL) return -1;
msr->removed_rules_tag = apr_array_make(msr->mp, 16, sizeof(char *));
if (msr->removed_rules_tag == NULL) return -1;
msr->removed_rules_msg = apr_array_make(msr->mp, 16, sizeof(char *));
if (msr->removed_rules_msg == NULL) return -1;
return 1;
}
/**
*
*/
static int is_response_status_relevant(modsec_rec *msr, int status) {
char *my_error_msg = NULL;
apr_status_t rc;
char buf[32];
/* ENH: Setting is_relevant here will cause an audit even if noauditlog
* was set for the last rule that matched. Is this what we want?
*/
if ((msr->txcfg->auditlog_relevant_regex == NULL)
||(msr->txcfg->auditlog_relevant_regex == NOT_SET_P))
{
return 0;
}
apr_snprintf(buf, sizeof(buf), "%d", status);
rc = msc_regexec(msr->txcfg->auditlog_relevant_regex, buf, strlen(buf), &my_error_msg);
if (rc >= 0) return 1;
if (rc == PCRE_ERROR_NOMATCH) return 0;
msr_log(msr, 1, "Regex processing failed (rc %d): %s", rc, my_error_msg);
return 0;
}
/**
*
*/
static apr_status_t modsecurity_process_phase_request_headers(modsec_rec *msr) {
apr_time_t time_before;
apr_status_t rc = 0;
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Starting phase REQUEST_HEADERS.");
}
time_before = apr_time_now();
if (msr->txcfg->ruleset != NULL) {
rc = msre_ruleset_process_phase(msr->txcfg->ruleset, msr);
}
msr->time_phase1 = apr_time_now() - time_before;
return rc;
}
/**
*
*/
static apr_status_t modsecurity_process_phase_request_body(modsec_rec *msr) {
apr_time_t time_before;
apr_status_t rc = 0;
if ((msr->allow_scope == ACTION_ALLOW_REQUEST)||(msr->allow_scope == ACTION_ALLOW)) {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Skipping phase REQUEST_BODY (allow used).");
}
return 0;
} else {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Starting phase REQUEST_BODY.");
}
}
time_before = apr_time_now();
if (msr->txcfg->ruleset != NULL) {
rc = msre_ruleset_process_phase(msr->txcfg->ruleset, msr);
}
msr->time_phase2 = apr_time_now() - time_before;
return rc;
}
/**
*
*/
static apr_status_t modsecurity_process_phase_response_headers(modsec_rec *msr) {
apr_time_t time_before;
apr_status_t rc = 0;
if (msr->allow_scope == ACTION_ALLOW) {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Skipping phase RESPONSE_HEADERS (allow used).");
}
return 0;
} else {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Starting phase RESPONSE_HEADERS.");
}
}
time_before = apr_time_now();
if (msr->txcfg->ruleset != NULL) {
rc = msre_ruleset_process_phase(msr->txcfg->ruleset, msr);
}
msr->time_phase3 = apr_time_now() - time_before;
return rc;
}
/**
*
*/
static apr_status_t modsecurity_process_phase_response_body(modsec_rec *msr) {
apr_time_t time_before;
apr_status_t rc = 0;
if (msr->allow_scope == ACTION_ALLOW) {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Skipping phase RESPONSE_BODY (allow used).");
}
return 0;
} else {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Starting phase RESPONSE_BODY.");
}
}
time_before = apr_time_now();
if (msr->txcfg->ruleset != NULL) {
rc = msre_ruleset_process_phase(msr->txcfg->ruleset, msr);
}
msr->time_phase4 = apr_time_now() - time_before;
return rc;
}
/**
*
*/
static apr_status_t modsecurity_process_phase_logging(modsec_rec *msr) {
apr_time_t time_before, time_after;
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Starting phase LOGGING.");
}
time_before = apr_time_now();
if (msr->txcfg->ruleset != NULL) {
msre_ruleset_process_phase(msr->txcfg->ruleset, msr);
}
modsecurity_persist_data(msr);
time_after = apr_time_now();
msr->time_phase5 = time_after - time_before;
/* Is this request relevant for logging purposes? */
if (msr->is_relevant == 0) {
/* Check the status */
msr->is_relevant += is_response_status_relevant(msr, msr->r->status);
/* If we processed two requests and statuses are different then
* check the other status too.
*/
if (msr->r_early->status != msr->r->status) {
msr->is_relevant += is_response_status_relevant(msr, msr->r_early->status);
}
}
/* Figure out if we want to keep the files (if there are any, of course). */
if ((msr->txcfg->upload_keep_files == KEEP_FILES_ON)
|| ((msr->txcfg->upload_keep_files == KEEP_FILES_RELEVANT_ONLY)&&(msr->is_relevant)))
{
msr->upload_remove_files = 0;
} else {
msr->upload_remove_files = 1;
}
/* Are we configured for audit logging? */
switch(msr->txcfg->auditlog_flag) {
case AUDITLOG_OFF :
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Audit log: Not configured to run for this request.");
}
return DECLINED;
break;
case AUDITLOG_RELEVANT :
if (msr->is_relevant == 0) {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Audit log: Ignoring a non-relevant request.");
}
return DECLINED;
}
break;
case AUDITLOG_ON :
/* All right, do nothing */
break;
default :
msr_log(msr, 1, "Internal error: Could not determine if auditing is needed, so forcing auditing.");
break;
}
/* Invoke the Audit logger */
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Audit log: Logging this transaction.");
}
sec_audit_logger(msr);
msr->time_logging = apr_time_now() - time_after;
return 0;
}
/**
* Processes one transaction phase. The phase number does not
* need to be explicitly provided since it's already available
* in the modsec_rec structure.
*/
apr_status_t modsecurity_process_phase(modsec_rec *msr, unsigned int phase) {
/* Check if we should run. */
if ((msr->was_intercepted)&&(phase != PHASE_LOGGING)) {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Skipping phase %d as request was already intercepted.", phase);
}
return 0;
}
/* Do not process the same phase twice. */
if (msr->phase >= phase) {
if (msr->txcfg->debuglog_level >= 4) {
msr_log(msr, 4, "Skipping phase %d because it was previously run (at %d now).",
phase, msr->phase);
}
return 0;
}
msr->phase = phase;
/* Clear out the transformation cache at the start of each phase */
if (msr->txcfg->cache_trans == MODSEC_CACHE_ENABLED) {
if (msr->tcache) {
apr_hash_index_t *hi;
void *dummy;
apr_table_t *tab;
const void *key;
apr_ssize_t klen;
#ifdef CACHE_DEBUG
apr_pool_t *mp = msr->msc_rule_mptmp;
const apr_array_header_t *ctarr;
const apr_table_entry_t *ctelts;
msre_cache_rec *rec;
int cn = 0;
int ri;
#else
apr_pool_t *mp = msr->mp;
#endif
for (hi = apr_hash_first(mp, msr->tcache); hi; hi = apr_hash_next(hi)) {
apr_hash_this(hi, &key, &klen, &dummy);
tab = (apr_table_t *)dummy;
if (tab == NULL) continue;
#ifdef CACHE_DEBUG
/* Dump the cache out as we clear */
ctarr = apr_table_elts(tab);
ctelts = (const apr_table_entry_t*)ctarr->elts;
for (ri = 0; ri < ctarr->nelts; ri++) {
cn++;
rec = (msre_cache_rec *)ctelts[ri].val;
if (rec->changed) {
if (msr->txcfg->debuglog_level >= 9) {
msr_log(msr, 9, "CACHE: %5d) hits=%d key=%pp %x;%s=\"%s\" (%pp - %pp)",
cn, rec->hits, key, rec->num, rec->path, log_escape_nq_ex(mp, rec->val, rec->val_len),
rec->val, rec->val + rec->val_len);
}
}
else {
if (msr->txcfg->debuglog_level >= 9) {
msr_log(msr, 9, "CACHE: %5d) hits=%d key=%pp %x;%s=<no change>",
cn, rec->hits, key, rec->num, rec->path);
}
}
}
#endif
apr_table_clear(tab);
apr_hash_set(msr->tcache, key, klen, NULL);
}
if (msr->txcfg->debuglog_level >= 9) {
msr_log(msr, 9, "Cleared transformation cache for phase %d", msr->phase);
}
}
msr->tcache_items = 0;
msr->tcache = apr_hash_make(msr->mp);
if (msr->tcache == NULL) return -1;
}
switch(phase) {
case 1 :
return modsecurity_process_phase_request_headers(msr);
case 2 :
return modsecurity_process_phase_request_body(msr);
case 3 :
return modsecurity_process_phase_response_headers(msr);
case 4 :
return modsecurity_process_phase_response_body(msr);
case 5 :
return modsecurity_process_phase_logging(msr);
default :
msr_log(msr, 1, "Invalid processing phase: %d", msr->phase);
break;
}
return -1;
}