[asterisk-commits] gtjoseph: branch 13 r425714 - in /branches/13: ./ include/asterisk/ main/ tests/
SVN commits to the Asterisk project
asterisk-commits at lists.digium.com
Thu Oct 16 12:30:42 CDT 2014
Author: gtjoseph
Date: Thu Oct 16 12:30:39 2014
New Revision: 425714
URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=425714
Log:
config: Fix inf loop using ast_category_browse and ast_variable_retrieve
Fix infinite loop when calling ast_variable_retrieve inside an
ast_category_browse loop when there is more than 1 category with
the same name.
Tested-by: George Joseph
Review: https://reviewboard.asterisk.org/r/4089/
........
Merged revisions 425713 from http://svn.asterisk.org/svn/asterisk/branches/12
Modified:
branches/13/ (props changed)
branches/13/include/asterisk/config.h
branches/13/main/config.c
branches/13/tests/test_config.c
Propchange: branches/13/
------------------------------------------------------------------------------
Binary property 'branch-12-merged' - no diff available.
Modified: branches/13/include/asterisk/config.h
URL: http://svnview.digium.com/svn/asterisk/branches/13/include/asterisk/config.h?view=diff&rev=425714&r1=425713&r2=425714
==============================================================================
--- branches/13/include/asterisk/config.h (original)
+++ branches/13/include/asterisk/config.h Thu Oct 16 12:30:39 2014
@@ -238,6 +238,11 @@
*
* \retval a category name on success
* \retval NULL on failure/no-more-categories
+ *
+ * \note ast_category_browse maintains internal state. Therefore is not thread
+ * safe, cannot be called recursively, and it is not safe to add or remove
+ * categories while browsing.
+ * ast_category_browse_filtered does not have these restrictions.
*/
char *ast_category_browse(struct ast_config *config, const char *prev_name);
@@ -257,10 +262,6 @@
*
* \retval ast_variable list on success
* \retval NULL on failure
- *
- * \note ast_category_browse is not thread safe and it is not safe to call
- * ast_category_delete while browsing using ast_category_browse.
- * ast_category_browse_filtered does not have these restrictions.
*/
struct ast_variable *ast_variable_browse_filtered(const struct ast_config *config,
const char *category_name, const char *filter);
Modified: branches/13/main/config.c
URL: http://svnview.digium.com/svn/asterisk/branches/13/main/config.c?view=diff&rev=425714&r1=425713&r2=425714
==============================================================================
--- branches/13/main/config.c (original)
+++ branches/13/main/config.c Thu Oct 16 12:30:39 2014
@@ -677,10 +677,29 @@
return tmp;
}
-const char *ast_variable_retrieve(struct ast_config *config,
- const char *category, const char *variable)
-{
- return ast_variable_retrieve_filtered(config, category, variable, NULL);
+const char *ast_variable_retrieve(struct ast_config *config, const char *category, const char *variable)
+{
+ struct ast_variable *v;
+
+ if (category) {
+ for (v = ast_variable_browse(config, category); v; v = v->next) {
+ if (!strcasecmp(variable, v->name)) {
+ return v->value;
+ }
+ }
+ } else {
+ struct ast_category *cat;
+
+ for (cat = config->root; cat; cat = cat->next) {
+ for (v = cat->root; v; v = v->next) {
+ if (!strcasecmp(variable, v->name)) {
+ return v->value;
+ }
+ }
+ }
+ }
+
+ return NULL;
}
const char *ast_variable_retrieve_filtered(struct ast_config *config,
@@ -859,6 +878,12 @@
const char *category_name, const char *filter)
{
struct ast_category *cat;
+
+ for (cat = config->root; cat; cat = cat->next) {
+ if (cat->name == category_name && does_category_match(cat, category_name, filter)) {
+ return cat;
+ }
+ }
for (cat = config->root; cat; cat = cat->next) {
if (does_category_match(cat, category_name, filter)) {
@@ -1188,7 +1213,6 @@
}
cat = next_available_category(prev, category_name, filter);
- config->last_browse = cat;
return cat;
}
Modified: branches/13/tests/test_config.c
URL: http://svnview.digium.com/svn/asterisk/branches/13/tests/test_config.c?view=diff&rev=425714&r1=425713&r2=425714
==============================================================================
--- branches/13/tests/test_config.c (original)
+++ branches/13/tests/test_config.c Thu Oct 16 12:30:39 2014
@@ -460,7 +460,7 @@
cat = ast_category_browse_filtered(cfg, NULL, NULL, NULL);
cat = ast_category_browse_filtered(cfg, NULL, cat, NULL);
cat_name = ast_category_get_name(cat);
- var = ast_variable_new("aaa", "bbb", "dummy");
+ var = ast_variable_new("aaa", "bbb0", "dummy");
if (!var) {
ast_test_status_update(test, "Couldn't allocate variable.\n");
goto out;
@@ -469,15 +469,70 @@
/* Make sure we can retrieve with specific category name */
var_value = ast_variable_retrieve(cfg, cat_name, "aaa");
- if (!var_value || strcmp(var_value, "bbb")) {
+ if (!var_value || strcmp(var_value, "bbb0")) {
ast_test_status_update(test, "Variable not found or wrong value.\n");
goto out;
}
/* Make sure we can retrieve with NULL category name */
var_value = ast_variable_retrieve(cfg, NULL, "aaa");
- if (!var_value || strcmp(var_value, "bbb")) {
+ if (!var_value || strcmp(var_value, "bbb0")) {
ast_test_status_update(test, "Variable not found or wrong value.\n");
+ goto out;
+ }
+
+ /* Now test variable retrieve inside a browse loop
+ * with multiple categories of the same name
+ */
+ cat = ast_category_new("test3", "dummy", -1);
+ if (!cat) {
+ ast_test_status_update(test, "Couldn't allocate category.\n");
+ goto out;
+ }
+ var = ast_variable_new("aaa", "bbb1", "dummy");
+ if (!var) {
+ ast_test_status_update(test, "Couldn't allocate variable.\n");
+ goto out;
+ }
+ ast_variable_append(cat, var);
+ ast_category_append(cfg, cat);
+
+ cat = ast_category_new("test3", "dummy", -1);
+ if (!cat) {
+ ast_test_status_update(test, "Couldn't allocate category.\n");
+ goto out;
+ }
+ var = ast_variable_new("aaa", "bbb2", "dummy");
+ if (!var) {
+ ast_test_status_update(test, "Couldn't allocate variable.\n");
+ goto out;
+ }
+ ast_variable_append(cat, var);
+ ast_category_append(cfg, cat);
+
+ cat_name = NULL;
+ i = 0;
+ while ((cat_name = ast_category_browse(cfg, cat_name))) {
+ if (!strcmp(cat_name, "test3")) {
+ snprintf(temp, sizeof(temp), "bbb%d", i);
+
+ var_value = ast_variable_retrieve(cfg, cat_name, "aaa");
+ if (!var_value || strcmp(var_value, temp)) {
+ ast_test_status_update(test, "Variable not found or wrong value %s.\n", var_value);
+ goto out;
+ }
+
+ var = ast_variable_browse(cfg, cat_name);
+ if (!var->value || strcmp(var->value, temp)) {
+ ast_test_status_update(test, "Variable not found or wrong value %s.\n", var->value);
+ goto out;
+ }
+
+ i++;
+ }
+ }
+ if (i != 3) {
+ ast_test_status_update(test, "There should have been 3 matches instead of %d.\n", i);
goto out;
}
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