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fix db connection hijacking issue 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@15625 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2009-11-23 18:25:11 +00:00
parent 06a4ef9735
commit 3db63361fd
2 changed files with 21 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/include/switch_core.h
View File

@ -1959,6 +1959,7 @@ typedef struct {
switch_mutex_t *mutex;
switch_memory_pool_t *pool;
int32_t flags;
unsigned long hash;
} switch_cache_db_handle_t;

28
src/switch_core_sqldb.c
View File

@ -171,6 +171,8 @@ SWITCH_DECLARE(void) switch_cache_db_detach(void)
if ((dbh = (switch_cache_db_handle_t *) val)) {
if (switch_mutex_trylock(dbh->mutex) == SWITCH_STATUS_SUCCESS) {
if (strstr(dbh->name, thread_str)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10,
"Detach cached DB handle %s [%s]\n", thread_str, switch_cache_db_type_name(dbh->type));
switch_clear_flag(dbh, CDF_INUSE);
}
switch_mutex_unlock(dbh->mutex);
@ -188,7 +190,10 @@ SWITCH_DECLARE(switch_status_t)_switch_cache_db_get_db_handle(switch_cache_db_ha
{
switch_thread_id_t self = switch_thread_self();
char thread_str[CACHE_DB_LEN] = "";
char db_str[CACHE_DB_LEN] = "";
switch_cache_db_handle_t *new_dbh = NULL;
switch_ssize_t hlen = -1;
const char *db_name = NULL;
switch (type) {
@ -208,28 +213,33 @@ SWITCH_DECLARE(switch_status_t)_switch_cache_db_get_db_handle(switch_cache_db_ha
return SWITCH_STATUS_FALSE;
}
snprintf(thread_str, sizeof(thread_str) - 1, "%s_%lu", db_name, (unsigned long)(intptr_t)self);
snprintf(db_str, sizeof(db_str) - 1, "db=\"%s\"", db_name);
snprintf(thread_str, sizeof(thread_str) - 1, "%s;thread=\"%lu\"", db_str, (unsigned long)(intptr_t)self);
switch_mutex_lock(dbh_mutex);
if ((new_dbh = switch_core_hash_find(dbh_hash, thread_str))) {
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG1,
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG10,
"Reuse Cached DB handle %s [%s]\n", thread_str, switch_cache_db_type_name(new_dbh->type));
} else {
switch_hash_index_t *hi;
const void *var;
void *val;
char *key;
unsigned long hash = 0;
hash = switch_ci_hashfunc_default(db_str, &hlen);
for (hi = switch_hash_first(NULL, dbh_hash); hi; hi = switch_hash_next(hi)) {
switch_hash_this(hi, &var, NULL, &val);
key = (char *) var;
if ((new_dbh = (switch_cache_db_handle_t *) val)) {
if (!switch_test_flag(new_dbh, CDF_INUSE) && switch_mutex_trylock(new_dbh->mutex) == SWITCH_STATUS_SUCCESS) {
if (hash == new_dbh->hash && !strncasecmp(new_dbh->name, db_str, strlen(db_str)) &&
!switch_test_flag(new_dbh, CDF_INUSE) && switch_mutex_trylock(new_dbh->mutex) == SWITCH_STATUS_SUCCESS) {
switch_set_flag(new_dbh, CDF_INUSE);
switch_set_string(new_dbh->name, thread_str);
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG1,
new_dbh->hash = switch_ci_hashfunc_default(db_str, &hlen);
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG10,
"Reuse Unused Cached DB handle %s [%s]\n", thread_str, switch_cache_db_type_name(new_dbh->type));
break;
}
@ -278,8 +288,8 @@ SWITCH_DECLARE(switch_status_t)_switch_cache_db_get_db_handle(switch_cache_db_ha
goto end;
}
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG1,
"Create Cached DB handle %s [%s]\n", thread_str, db ? "sqlite" : "ODBC");
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, NULL, SWITCH_LOG_DEBUG10,
"Create Cached DB handle %s [%s]\n", thread_str, switch_cache_db_type_name(type));
switch_core_new_memory_pool(&pool);
new_dbh = switch_core_alloc(pool, sizeof(*new_dbh));
@ -287,6 +297,8 @@ SWITCH_DECLARE(switch_status_t)_switch_cache_db_get_db_handle(switch_cache_db_ha
new_dbh->type = type;
switch_set_string(new_dbh->name, thread_str);
switch_set_flag(new_dbh, CDF_INUSE);
new_dbh->hash = switch_ci_hashfunc_default(db_str, &hlen);
if (db) new_dbh->native_handle.core_db_dbh = db; else new_dbh->native_handle.odbc_dbh = odbc_dbh;
switch_mutex_init(&new_dbh->mutex, SWITCH_MUTEX_UNNESTED, new_dbh->pool);
@ -1143,7 +1155,7 @@ switch_status_t switch_core_sqldb_start(switch_memory_pool_t *pool, switch_bool_
runtime.odbc_dsn = NULL;
runtime.odbc_user = NULL;
runtime.odbc_pass = NULL;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Falling back to sqlite.\n");
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Falling back to core_db.\n");
goto top;
}