[asterisk-commits] mjordan: trunk r378384 - /trunk/addons/app_mysql.c
SVN commits to the Asterisk project
asterisk-commits at lists.digium.com
Wed Jan 2 16:19:35 CST 2013
Author: mjordan
Date: Wed Jan 2 16:19:32 2013
New Revision: 378384
URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=378384
Log:
Clean up app_mysql's application entry points to properly parse arguments
When parsing arguments, application entry points should not attempt to
directly modify the parameters to the function. This patch properly duplicates
the passed in parameters before attempting to parse them.
(issue ASTERISK-20658)
Reported by: wdoekes
patches:
issueA20658_sanitize_app_mysql.patch uploaded by wdoekes (license 5674)
Modified:
trunk/addons/app_mysql.c
Modified: trunk/addons/app_mysql.c
URL: http://svnview.digium.com/svn/asterisk/trunk/addons/app_mysql.c?view=diff&rev=378384&r1=378383&r2=378384
==============================================================================
--- trunk/addons/app_mysql.c (original)
+++ trunk/addons/app_mysql.c Wed Jan 2 16:19:32 2013
@@ -292,16 +292,17 @@
return res;
}
-static int aMYSQL_set(struct ast_channel *chan, char *data)
-{
- char *var, *tmp;
+static int aMYSQL_set(struct ast_channel *chan, const char *data)
+{
+ char *var, *tmp, *parse;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(set);
AST_APP_ARG(variable);
AST_APP_ARG(value);
);
- AST_NONSTANDARD_APP_ARGS(args, data, ' ');
+ parse = ast_strdupa(data);
+ AST_NONSTANDARD_APP_ARGS(args, parse, ' ');
if (args.argc == 3) {
var = ast_alloca(6 + strlen(args.variable) + 1);
@@ -317,7 +318,7 @@
}
/* MYSQL operations */
-static int aMYSQL_connect(struct ast_channel *chan, char *data)
+static int aMYSQL_connect(struct ast_channel *chan, const char *data)
{
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(connect);
@@ -333,8 +334,9 @@
const char *ctimeout;
unsigned int port = 0;
char *port_str;
-
- AST_NONSTANDARD_APP_ARGS(args, data, ' ');
+ char *parse = ast_strdupa(data);
+
+ AST_NONSTANDARD_APP_ARGS(args, parse, ' ');
if (args.argc < 6) {
ast_log(LOG_WARNING, "MYSQL_connect is missing some arguments\n");
@@ -385,7 +387,7 @@
return 0;
}
-static int aMYSQL_query(struct ast_channel *chan, char *data)
+static int aMYSQL_query(struct ast_channel *chan, const char *data)
{
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(query);
@@ -397,8 +399,9 @@
MYSQL_RES *mysqlres;
int connid;
int mysql_query_res;
-
- AST_NONSTANDARD_APP_ARGS(args, data, ' ');
+ char *parse = ast_strdupa(data);
+
+ AST_NONSTANDARD_APP_ARGS(args, parse, ' ');
if (args.argc != 4 || (connid = atoi(args.connid)) == 0) {
ast_log(LOG_WARNING, "missing some arguments\n");
@@ -426,7 +429,7 @@
return -1;
}
-static int aMYSQL_nextresult(struct ast_channel *chan, char *data)
+static int aMYSQL_nextresult(struct ast_channel *chan, const char *data)
{
MYSQL *mysql;
MYSQL_RES *mysqlres;
@@ -436,8 +439,9 @@
AST_APP_ARG(connid);
);
int connid = -1;
-
- AST_NONSTANDARD_APP_ARGS(args, data, ' ');
+ char *parse = ast_strdupa(data);
+
+ AST_NONSTANDARD_APP_ARGS(args, parse, ' ');
sscanf(args.connid, "%30d", &connid);
if (args.argc != 3 || connid <= 0) {
@@ -466,7 +470,7 @@
}
-static int aMYSQL_fetch(struct ast_channel *chan, char *data)
+static int aMYSQL_fetch(struct ast_channel *chan, const char *data)
{
MYSQL_RES *mysqlres;
MYSQL_ROW mysqlrow;
@@ -518,13 +522,14 @@
return -1;
}
-static int aMYSQL_clear(struct ast_channel *chan, char *data)
+static int aMYSQL_clear(struct ast_channel *chan, const char *data)
{
MYSQL_RES *mysqlres;
int id;
- strsep(&data, " "); /* eat the first token, we already know it :P */
- id = safe_scan_int(&data, " \n", -1);
+ char *parse = ast_strdupa(data);
+ strsep(&parse, " "); /* eat the first token, we already know it :P */
+ id = safe_scan_int(&parse, " \n", -1);
if ((mysqlres = find_identifier(id, AST_MYSQL_ID_RESID)) == NULL) {
ast_log(LOG_WARNING, "Invalid result identifier %d passed in aMYSQL_clear\n", id);
} else {
@@ -535,13 +540,14 @@
return 0;
}
-static int aMYSQL_disconnect(struct ast_channel *chan, char *data)
+static int aMYSQL_disconnect(struct ast_channel *chan, const char *data)
{
MYSQL *mysql;
int id;
- strsep(&data, " "); /* eat the first token, we already know it :P */
-
- id = safe_scan_int(&data, " \n", -1);
+ char *parse = ast_strdupa(data);
+ strsep(&parse, " "); /* eat the first token, we already know it :P */
+
+ id = safe_scan_int(&parse, " \n", -1);
if ((mysql = find_identifier(id, AST_MYSQL_ID_CONNID)) == NULL) {
ast_log(LOG_WARNING, "Invalid connection identifier %d passed in aMYSQL_disconnect\n", id);
} else {
@@ -584,19 +590,19 @@
ast_mutex_lock(&_mysql_mutex);
if (strncasecmp("connect", data, strlen("connect")) == 0) {
- result = aMYSQL_connect(chan, ast_strdupa(data));
+ result = aMYSQL_connect(chan, data);
} else if (strncasecmp("query", data, strlen("query")) == 0) {
- result = aMYSQL_query(chan, ast_strdupa(data));
+ result = aMYSQL_query(chan, data);
} else if (strncasecmp("nextresult", data, strlen("nextresult")) == 0) {
- result = aMYSQL_nextresult(chan, ast_strdupa(data));
+ result = aMYSQL_nextresult(chan, data);
} else if (strncasecmp("fetch", data, strlen("fetch")) == 0) {
- result = aMYSQL_fetch(chan, ast_strdupa(data));
+ result = aMYSQL_fetch(chan, data);
} else if (strncasecmp("clear", data, strlen("clear")) == 0) {
- result = aMYSQL_clear(chan, ast_strdupa(data));
+ result = aMYSQL_clear(chan, data);
} else if (strncasecmp("disconnect", data, strlen("disconnect")) == 0) {
- result = aMYSQL_disconnect(chan, ast_strdupa(data));
+ result = aMYSQL_disconnect(chan, data);
} else if (strncasecmp("set", data, 3) == 0) {
- result = aMYSQL_set(chan, ast_strdupa(data));
+ result = aMYSQL_set(chan, data);
} else {
ast_log(LOG_WARNING, "Unknown argument to MYSQL application : %s\n", data);
result = -1;
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