[asterisk-commits] sgriepentrog: trunk r401962 - in /trunk: ./ include/asterisk/pbx.h main/pbx.c
SVN commits to the Asterisk project
asterisk-commits at lists.digium.com
Fri Oct 25 15:51:15 CDT 2013
Author: sgriepentrog
Date: Fri Oct 25 15:51:13 2013
New Revision: 401962
URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=401962
Log:
pbx.c: fix confused match caller id that deleted exten still in hash
This fixes a bug where a zero length callerid match adjacent to a no
match callerid extension entry would be deleted together, which then
resulted in hashtable references to free'd memory. A third state of
the matchcid value has been added to indicate match to any extension
which allows enforcing comparison of matchcid on/off without errors.
(closes issue AST-1235)
Reported by: Guenther Kelleter
Review: https://reviewboard.asterisk.org/r/2930/
........
Merged revisions 401959 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........
Merged revisions 401960 from http://svn.asterisk.org/svn/asterisk/branches/11
........
Merged revisions 401961 from http://svn.asterisk.org/svn/asterisk/branches/12
Modified:
trunk/ (props changed)
trunk/include/asterisk/pbx.h
trunk/main/pbx.c
Propchange: trunk/
------------------------------------------------------------------------------
Binary property 'branch-12-merged' - no diff available.
Modified: trunk/include/asterisk/pbx.h
URL: http://svnview.digium.com/svn/asterisk/trunk/include/asterisk/pbx.h?view=diff&rev=401962&r1=401961&r2=401962
==============================================================================
--- trunk/include/asterisk/pbx.h (original)
+++ trunk/include/asterisk/pbx.h Fri Oct 25 15:51:13 2013
@@ -69,6 +69,16 @@
AST_EXTENSION_ONHOLD = 1 << 4, /*!< All devices ONHOLD */
};
+/*!
+ * \brief extension matchcid types
+ * \note matchcid in ast_exten retains 0/1, this adds 3rd state for functions to specify all
+ * \see ast_context_remove_extension_callerid
+ */
+enum ast_ext_matchcid_types {
+ AST_EXT_MATCHCID_OFF = 0, /*!< Match only extensions with matchcid=0 */
+ AST_EXT_MATCHCID_ON = 1, /*!< Match only extensions with matchcid=1 AND cidmatch matches */
+ AST_EXT_MATCHCID_ANY = 2, /*!< Match both - used only in functions manipulating ast_exten's */
+};
struct ast_context;
struct ast_exten;
Modified: trunk/main/pbx.c
URL: http://svnview.digium.com/svn/asterisk/trunk/main/pbx.c?view=diff&rev=401962&r1=401961&r2=401962
==============================================================================
--- trunk/main/pbx.c (original)
+++ trunk/main/pbx.c Fri Oct 25 15:51:13 2013
@@ -1237,13 +1237,22 @@
}
/* but if they are the same, do the cidmatch values match? */
- if (ac->matchcid && bc->matchcid) {
- return strcmp(ac->cidmatch,bc->cidmatch);
- } else if (!ac->matchcid && !bc->matchcid) {
- return 0; /* if there's no matchcid on either side, then this is a match */
- } else {
- return 1; /* if there's matchcid on one but not the other, they are different */
- }
+ /* not sure which side may be using ast_ext_matchcid_types, so check both */
+ if (ac->matchcid == AST_EXT_MATCHCID_ANY || bc->matchcid == AST_EXT_MATCHCID_ANY) {
+ return 0;
+ }
+ if (ac->matchcid == AST_EXT_MATCHCID_OFF && bc->matchcid == AST_EXT_MATCHCID_OFF) {
+ return 0;
+ }
+ if (ac->matchcid != bc->matchcid) {
+ return 1;
+ }
+ /* all other cases already disposed of, match now required on callerid string (cidmatch) */
+ /* although ast_add_extension2_lockopt() enforces non-zero ptr, caller may not have */
+ if (ast_strlen_zero(ac->cidmatch) && ast_strlen_zero(bc->cidmatch)) {
+ return 0;
+ }
+ return strcmp(ac->cidmatch, bc->cidmatch);
}
static int hashtab_compare_exten_numbers(const void *ah_a, const void *ah_b)
@@ -1271,7 +1280,7 @@
const struct ast_exten *ac = obj;
unsigned int x = ast_hashtab_hash_string(ac->exten);
unsigned int y = 0;
- if (ac->matchcid)
+ if (ac->matchcid == AST_EXT_MATCHCID_ON)
y = ast_hashtab_hash_string(ac->cidmatch);
return x+y;
}
@@ -1467,7 +1476,7 @@
ast_copy_string(dummy_name, e1->exten, sizeof(dummy_name));
e2 = ast_hashtab_lookup(c1->root_table, &ex);
if (!e2) {
- if (e1->matchcid) {
+ if (e1->matchcid == AST_EXT_MATCHCID_ON) {
ast_log(LOG_NOTICE,"Called from: %s:%d: The %s context records the exten %s (CID match: %s) but it is not in its root_table\n", file, line, c2->name, dummy_name, e1->cidmatch );
} else {
ast_log(LOG_NOTICE,"Called from: %s:%d: The %s context records the exten %s but it is not in its root_table\n", file, line, c2->name, dummy_name );
@@ -6682,7 +6691,7 @@
/*! \note This function will lock conlock. */
int ast_context_remove_extension(const char *context, const char *extension, int priority, const char *registrar)
{
- return ast_context_remove_extension_callerid(context, extension, priority, NULL, 0, registrar);
+ return ast_context_remove_extension_callerid(context, extension, priority, NULL, AST_EXT_MATCHCID_ANY, registrar);
}
int ast_context_remove_extension_callerid(const char *context, const char *extension, int priority, const char *callerid, int matchcallerid, const char *registrar)
@@ -6712,7 +6721,7 @@
*/
int ast_context_remove_extension2(struct ast_context *con, const char *extension, int priority, const char *registrar, int already_locked)
{
- return ast_context_remove_extension_callerid2(con, extension, priority, NULL, 0, registrar, already_locked);
+ return ast_context_remove_extension_callerid2(con, extension, priority, NULL, AST_EXT_MATCHCID_ANY, registrar, already_locked);
}
int ast_context_remove_extension_callerid2(struct ast_context *con, const char *extension, int priority, const char *callerid, int matchcallerid, const char *registrar, int already_locked)
@@ -6728,10 +6737,6 @@
if (!already_locked)
ast_wrlock_context(con);
- /* Handle this is in the new world */
-
- /* FIXME For backwards compatibility, if callerid==NULL, then remove ALL
- * peers, not just those matching the callerid. */
#ifdef NEED_DEBUG
ast_verb(3,"Removing %s/%s/%d%s%s from trees, registrar=%s\n", con->name, extension, priority, matchcallerid ? "/" : "", matchcallerid ? callerid : "", registrar);
#endif
@@ -6740,7 +6745,7 @@
#endif
/* find this particular extension */
ex.exten = dummy_name;
- ex.matchcid = matchcallerid && !ast_strlen_zero(callerid); /* don't say match if there's no callerid */
+ ex.matchcid = matchcallerid;
ex.cidmatch = callerid;
ast_copy_string(dummy_name, extension, sizeof(dummy_name));
exten = ast_hashtab_lookup(con->root_table, &ex);
@@ -6763,7 +6768,6 @@
ex.priority = priority;
exten2 = ast_hashtab_lookup(exten->peer_table, &ex);
if (exten2) {
-
if (exten2->label) { /* if this exten has a label, remove that, too */
exten3 = ast_hashtab_remove_this_object(exten->peer_label_table,exten2);
if (!exten3)
@@ -6824,10 +6828,11 @@
/* scan the priority list to remove extension with exten->priority == priority */
for (peer = exten, next_peer = exten->peer ? exten->peer : exten->next;
- peer && !strcmp(peer->exten, extension) && (!matchcallerid || (!ast_strlen_zero(callerid) && !ast_strlen_zero(peer->cidmatch) && !strcmp(peer->cidmatch,callerid)) || (ast_strlen_zero(callerid) && ast_strlen_zero(peer->cidmatch)));
+ peer && !strcmp(peer->exten, extension) &&
+ (!callerid || (!matchcallerid && !peer->matchcid) || (matchcallerid && peer->matchcid && !strcmp(peer->cidmatch, callerid))) ;
peer = next_peer, next_peer = next_peer ? (next_peer->peer ? next_peer->peer : next_peer->next) : NULL) {
+
if ((priority == 0 || peer->priority == priority) &&
- (!callerid || !matchcallerid || (matchcallerid && !strcmp(peer->cidmatch, callerid))) &&
(!registrar || !strcmp(peer->registrar, registrar) )) {
found = 1;
@@ -6857,6 +6862,7 @@
} else { /* easy, we are not first priority in extension */
previous_peer->peer = peer->peer;
}
+
/* now, free whole priority extension */
destroy_exten(peer);
@@ -7605,7 +7611,7 @@
dpc->total_prio++;
/* write extension name and first peer */
- if (e->matchcid)
+ if (e->matchcid == AST_EXT_MATCHCID_ON)
snprintf(buf, sizeof(buf), "'%s' (CID match '%s') => ", ast_get_extension_name(e), e->cidmatch);
else
snprintf(buf, sizeof(buf), "'%s' =>", ast_get_extension_name(e));
@@ -9751,10 +9757,10 @@
/* Blank callerid and NULL callerid are two SEPARATE things. Do NOT confuse the two!!! */
if (callerid) {
p += ext_strncpy(p, callerid, strlen(callerid) + 1) + 1;
- tmp->matchcid = 1;
+ tmp->matchcid = AST_EXT_MATCHCID_ON;
} else {
*p++ = '\0';
- tmp->matchcid = 0;
+ tmp->matchcid = AST_EXT_MATCHCID_OFF;
}
tmp->app = p;
strcpy(p, application);
@@ -9771,7 +9777,7 @@
an extension, and the trie exists, then we need to incrementally add this pattern to it. */
ast_copy_string(dummy_name, extension, sizeof(dummy_name));
dummy_exten.exten = dummy_name;
- dummy_exten.matchcid = 0;
+ dummy_exten.matchcid = AST_EXT_MATCHCID_OFF;
dummy_exten.cidmatch = 0;
tmp2 = ast_hashtab_lookup(con->root_table, &dummy_exten);
if (!tmp2) {
@@ -9784,11 +9790,11 @@
for (e = con->root; e; el = e, e = e->next) { /* scan the extension list */
res = ext_cmp(e->exten, tmp->exten);
if (res == 0) { /* extension match, now look at cidmatch */
- if (!e->matchcid && !tmp->matchcid)
+ if (e->matchcid == AST_EXT_MATCHCID_OFF && tmp->matchcid == AST_EXT_MATCHCID_OFF)
res = 0;
- else if (tmp->matchcid && !e->matchcid)
+ else if (tmp->matchcid == AST_EXT_MATCHCID_ON && e->matchcid == AST_EXT_MATCHCID_OFF)
res = 1;
- else if (e->matchcid && !tmp->matchcid)
+ else if (e->matchcid == AST_EXT_MATCHCID_ON && tmp->matchcid == AST_EXT_MATCHCID_OFF)
res = -1;
else
res = ext_cmp(e->cidmatch, tmp->cidmatch);
@@ -9865,7 +9871,7 @@
}
}
if (option_debug) {
- if (tmp->matchcid) {
+ if (tmp->matchcid == AST_EXT_MATCHCID_ON) {
ast_debug(1, "Added extension '%s' priority %d (CID match '%s') to %s (%p)\n",
tmp->exten, tmp->priority, tmp->cidmatch, con->name, con);
} else {
@@ -9874,7 +9880,7 @@
}
}
- if (tmp->matchcid) {
+ if (tmp->matchcid == AST_EXT_MATCHCID_ON) {
ast_verb(3, "Added extension '%s' priority %d (CID match '%s') to %s\n",
tmp->exten, tmp->priority, tmp->cidmatch, con->name);
} else {
@@ -10334,12 +10340,11 @@
}
ast_verb(3, "Remove %s/%s/%d, registrar=%s; con=%s(%p); con->root=%p\n",
tmp->name, prio_item->exten, prio_item->priority, registrar, con? con->name : "<nil>", con, con? con->root_table: NULL);
- /* set matchcid to 1 to insure we get a direct match, and NULL registrar to make sure no wildcarding is done */
ast_copy_string(extension, prio_item->exten, sizeof(extension));
if (prio_item->cidmatch) {
ast_copy_string(cidmatch, prio_item->cidmatch, sizeof(cidmatch));
}
- end_traversal &= ast_context_remove_extension_callerid2(tmp, extension, prio_item->priority, prio_item->cidmatch ? cidmatch : NULL, 1, NULL, 1);
+ end_traversal &= ast_context_remove_extension_callerid2(tmp, extension, prio_item->priority, cidmatch, prio_item->matchcid, NULL, 1);
}
/* Explanation:
* ast_context_remove_extension_callerid2 will destroy the extension that it comes across. This
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