diff options
author | Richard Mudgett <rmudgett@digium.com> | 2017-03-02 21:27:00 -0600 |
---|---|---|
committer | Richard Mudgett <rmudgett@digium.com> | 2017-03-02 21:46:51 -0600 |
commit | c9296b23d1574332ccbc83f3fc7ba492cfc34cfe (patch) | |
tree | e9634d3306bd448317af9b3115fa307379c48a46 | |
parent | e9b2360d17f744cb8993672977e2688ab3491ae2 (diff) |
core: Cleanup ast_get_hint() usage.
* manager.c:manager_state_cb() Fix potential use of uninitialized hint[]
if a hint does not exist for the requested extension. Ran into this when
developing a testsuite test. The AMI event ExtensionStatus came out with
the hint header value containing garbage. The AMI event PresenceStatus
also had the same issue.
* manager.c:action_extensionstate() no need to completely initialize the
hint[]. Only initialize the first element.
* pbx.c:ast_add_hint() Remove unnecessary assignment.
* chan_sip.c: Eliminate an unneeded hint[] local variable. We only care
about the return value of ast_get_hint() there.
Change-Id: Ia9a8786f01f93f1f917200f0a50bead0319af97b
-rw-r--r-- | channels/chan_sip.c | 7 | ||||
-rw-r--r-- | main/manager.c | 24 | ||||
-rw-r--r-- | main/pbx.c | 1 |
3 files changed, 18 insertions, 14 deletions
diff --git a/channels/chan_sip.c b/channels/chan_sip.c index 3e4dafb1b..8241b67ed 100644 --- a/channels/chan_sip.c +++ b/channels/chan_sip.c @@ -18364,10 +18364,11 @@ static enum sip_get_dest_result get_destination(struct sip_pvt *p, struct sip_re /* If this is a subscription we actually just need to see if a hint exists for the extension */ if (req->method == SIP_SUBSCRIBE) { - char hint[AST_MAX_EXTENSION]; int which = 0; - if (ast_get_hint(hint, sizeof(hint), NULL, 0, NULL, p->context, uri) || - (ast_get_hint(hint, sizeof(hint), NULL, 0, NULL, p->context, decoded_uri) && (which = 1))) { + + if (ast_get_hint(NULL, 0, NULL, 0, NULL, p->context, uri) + || (ast_get_hint(NULL, 0, NULL, 0, NULL, p->context, decoded_uri) + && (which = 1))) { if (!oreq) { ast_string_field_set(p, exten, which ? decoded_uri : uri); } diff --git a/main/manager.c b/main/manager.c index f11c8dca4..eae1ca52a 100644 --- a/main/manager.c +++ b/main/manager.c @@ -5680,8 +5680,9 @@ static int action_extensionstate(struct mansession *s, const struct message *m) { const char *exten = astman_get_header(m, "Exten"); const char *context = astman_get_header(m, "Context"); - char hint[256] = ""; + char hint[256]; int status; + if (ast_strlen_zero(exten)) { astman_send_error(s, m, "Extension not specified"); return 0; @@ -5690,16 +5691,18 @@ static int action_extensionstate(struct mansession *s, const struct message *m) context = "default"; } status = ast_extension_state(NULL, context, exten); - ast_get_hint(hint, sizeof(hint) - 1, NULL, 0, NULL, context, exten); + hint[0] = '\0'; + ast_get_hint(hint, sizeof(hint), NULL, 0, NULL, context, exten); astman_start_ack(s, m); - astman_append(s, "Message: Extension Status\r\n" - "Exten: %s\r\n" - "Context: %s\r\n" - "Hint: %s\r\n" - "Status: %d\r\n" - "StatusText: %s\r\n\r\n", - exten, context, hint, status, - ast_extension_state2str(status)); + astman_append(s, "Message: Extension Status\r\n" + "Exten: %s\r\n" + "Context: %s\r\n" + "Hint: %s\r\n" + "Status: %d\r\n" + "StatusText: %s\r\n" + "\r\n", + exten, context, hint, status, + ast_extension_state2str(status)); return 0; } @@ -6973,6 +6976,7 @@ static int manager_state_cb(const char *context, const char *exten, struct ast_s /* Notify managers of change */ char hint[512]; + hint[0] = '\0'; ast_get_hint(hint, sizeof(hint), NULL, 0, NULL, context, exten); switch(info->reason) { diff --git a/main/pbx.c b/main/pbx.c index 47e0b0eda..fe87d67a5 100644 --- a/main/pbx.c +++ b/main/pbx.c @@ -3967,7 +3967,6 @@ static int ast_add_hint(struct ast_exten *e) hint_new->last_presence_state = presence_state; hint_new->last_presence_subtype = subtype; hint_new->last_presence_message = message; - message = subtype = NULL; } } |