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Fix possible crashes in case of OOM, as well as a leak.

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This commit is contained in:
Andrey Hristov 2010-04-29 13:13:41 +00:00
parent c23d902e0b
commit ac172db01f
1 changed files with 21 additions and 2 deletions
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23
ext/mysqlnd/mysqlnd.c
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@ -780,8 +780,10 @@ PHPAPI MYSQLND * mysqlnd_connect(MYSQLND * conn,
DBG_INF_FMT("host=%s user=%s db=%s port=%d flags=%d", host?host:"", user?user:"", db?db:"", port, mysql_flags);
if (!conn) {
conn = mysqlnd_init(FALSE);
self_alloced = TRUE;
if (!(conn = mysqlnd_init(FALSE))) {
DBG_RETURN(NULL);
}
}
ret = conn->m->connect(conn, host, user, passwd, passwd_len, db, db_len, port, socket, mysql_flags TSRMLS_CC);
@ -1094,7 +1096,9 @@ MYSQLND_METHOD(mysqlnd_conn, list_fields)(MYSQLND * conn, const char *table, con
MyISAM goes to 2500 BIT columns, double it for safety.
*/
result = mysqlnd_result_init(5000, conn->persistent TSRMLS_CC);
if (!result) {
DBG_RETURN(NULL);
}
if (FAIL == result->m.read_result_metadata(result, conn TSRMLS_CC)) {
DBG_ERR("Error ocurred while reading metadata");
@ -1105,6 +1109,11 @@ MYSQLND_METHOD(mysqlnd_conn, list_fields)(MYSQLND * conn, const char *table, con
result->type = MYSQLND_RES_NORMAL;
result->m.fetch_row = result->m.fetch_row_normal_unbuffered;
result->unbuf = mnd_ecalloc(1, sizeof(MYSQLND_RES_UNBUFFERED));
if (!result->unbuf) {
DBG_ERR("OOM");
result->m.free_result(result, TRUE TSRMLS_CC);
DBG_RETURN(NULL);
}
result->unbuf->eof_reached = TRUE;
DBG_RETURN(result);
@ -1933,7 +1942,13 @@ MYSQLND_METHOD(mysqlnd_conn, set_client_option)(MYSQLND * const conn,
/* when num_commands is 0, then realloc will be effectively a malloc call, internally */
conn->options.init_commands = mnd_perealloc(conn->options.init_commands, sizeof(char *) * (conn->options.num_commands + 1),
conn->persistent);
if (!conn->options.init_commands) {
DBG_RETURN(FAIL);
}
conn->options.init_commands[conn->options.num_commands] = mnd_pestrdup(value, conn->persistent);
if (!conn->options.init_commands[conn->options.num_commands]) {
DBG_RETURN(FAIL);
}
++conn->options.num_commands;
break;
case MYSQL_READ_DEFAULT_FILE:
@ -1946,6 +1961,10 @@ MYSQLND_METHOD(mysqlnd_conn, set_client_option)(MYSQLND * const conn,
break;
case MYSQL_SET_CHARSET_NAME:
DBG_INF("MYSQL_SET_CHARSET_NAME");
if (conn->options.charset_name) {
mnd_pefree(conn->options.charset_name, conn->persistent);
conn->options.charset_name = NULL;
}
conn->options.charset_name = mnd_pestrdup(value, conn->persistent);
DBG_INF_FMT("charset=%s", conn->options.charset_name);
break;