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res_pjsip: Strip spaces from items parsed from comma-separated lists

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Configurations like "aors = a, b, c" were either ignoring everything after "a"
or trying to look up " b".  Same for mailboxes,  ciphers, contacts and a few
others.

To fix, all the strsep(&copy, ",") calls have been wrapped in ast_strip.  To
facilitate this, ast_strip, ast_skip_blanks and ast_skip_nonblanks were
updated to handle null pointers.

In some cases, an ast_strlen_zero() test was added to skip consecutive commas.

There was also an attempt to ast_free an ast_strdupa'd string in
ast_sip_for_each_aor which was causing a SEGV.  I removed it.

Although this issue was reported for realtime, the issue was in the res_pjsip
modules so all config mechanisms were affected.

ASTERISK-25829 #close
Reported-by: Mateusz Kowalski

Change-Id: I0b22a2cf22a7c1c50d4ecacbfa540155bec0e7a2
This commit is contained in:
George Joseph
2016-03-06 13:38:41 -07:00
parent 6e58f83d8d
commit 530cff5f5f
12 changed files with 71 additions and 29 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
res/res_pjsip_mwi.c
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@@ -432,7 +432,7 @@ static void send_unsolicited_mwi_notify(struct mwi_subscription *sub,
ast_debug(5, "Sending unsolicited MWI NOTIFY to endpoint %s, new messages: %d, old messages: %d\n",
sub->id, counter->new_msgs, counter->old_msgs);
while ((aor_name = strsep(&endpoint_aors, ","))) {
while ((aor_name = ast_strip(strsep(&endpoint_aors, ",")))) {
RAII_VAR(struct ast_sip_aor *, aor, ast_sip_location_retrieve_aor(aor_name), ao2_cleanup);
RAII_VAR(struct ao2_container *, contacts, NULL, ao2_cleanup);
struct unsolicited_mwi_data mwi_data = {
@@ -598,7 +598,11 @@ static int mwi_validate_for_aor(void *obj, void *arg, int flags)
}
mailboxes = ast_strdupa(aor->mailboxes);
while ((mailbox = strsep(&mailboxes, ","))) {
while ((mailbox = ast_strip(strsep(&mailboxes, ",")))) {
if (ast_strlen_zero(mailbox)) {
continue;
}
if (endpoint_receives_unsolicited_mwi_for_mailbox(endpoint, mailbox)) {
ast_debug(1, "Endpoint '%s' already configured for unsolicited MWI for mailbox '%s'. "
"Denying MWI subscription to %s\n", ast_sorcery_object_get_id(endpoint), mailbox,
@@ -622,9 +626,13 @@ static int mwi_on_aor(void *obj, void *arg, int flags)
}
mailboxes = ast_strdupa(aor->mailboxes);
while ((mailbox = strsep(&mailboxes, ","))) {
while ((mailbox = ast_strip(strsep(&mailboxes, ",")))) {
struct mwi_stasis_subscription *mwi_stasis_sub;
if (ast_strlen_zero(mailbox)) {
continue;
}
mwi_stasis_sub = mwi_stasis_subscription_alloc(mailbox, sub);
if (!mwi_stasis_sub) {
continue;
@@ -890,7 +898,7 @@ static int create_mwi_subscriptions_for_endpoint(void *obj, void *arg, int flags
endpoint_aors = ast_strdupa(endpoint->aors);
while ((aor_name = strsep(&endpoint_aors, ","))) {
while ((aor_name = ast_strip(strsep(&endpoint_aors, ",")))) {
RAII_VAR(struct ast_sip_aor *, aor, ast_sip_location_retrieve_aor(aor_name), ao2_cleanup);
if (!aor) {
@@ -921,11 +929,15 @@ static int create_mwi_subscriptions_for_endpoint(void *obj, void *arg, int flags
}
mailboxes = ast_strdupa(endpoint->subscription.mwi.mailboxes);
while ((mailbox = strsep(&mailboxes, ","))) {
struct mwi_subscription *sub = aggregate_sub ?:
mwi_subscription_alloc(endpoint, 0, NULL);
while ((mailbox = ast_strip(strsep(&mailboxes, ",")))) {
struct mwi_subscription *sub;
struct mwi_stasis_subscription *mwi_stasis_sub;
if (ast_strlen_zero(mailbox)) {
continue;
}
sub = aggregate_sub ?: mwi_subscription_alloc(endpoint, 0, NULL);
mwi_stasis_sub = mwi_stasis_subscription_alloc(mailbox, sub);
if (mwi_stasis_sub) {
ao2_link(sub->stasis_subs, mwi_stasis_sub);