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Add hangupcause translation support

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The HANGUPCAUSE hash (trunk only) meant to replace SIP_CAUSE has now
been replaced with the HANGUPCAUSE and HANGUPCAUSE_KEYS dialplan
functions to better facilitate access to the AST_CAUSE translations
for technology-specific cause codes. The HangupCauseClear application
has also been added to remove this data from the channel.

(closes issue SWP-4738)
Review: https://reviewboard.asterisk.org/r/2025/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@370316 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kinsey Moore
2012-07-20 15:48:55 +00:00
parent 499a445af2
commit cb9756daa2
13 changed files with 434 additions and 23 deletions
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77
main/channel_internal_api.c
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@@ -88,6 +88,7 @@ struct ast_channel {
#ifdef HAVE_EPOLL
struct ast_epoll_data *epfd_data[AST_MAX_FDS];
#endif
struct ao2_container *dialed_causes; /*!< Contains tech-specific and Asterisk cause data from dialed channels */
AST_DECLARE_STRING_FIELDS(
AST_STRING_FIELD(name); /*!< ASCII unique channel name */
@@ -1197,6 +1198,72 @@ struct ast_flags *ast_channel_flags(struct ast_channel *chan)
return &chan->flags;
}
static int collect_names_cb(void *obj, void *arg, int flags) {
struct ast_control_pvt_cause_code *cause_code = obj;
struct ast_str **str = arg;
ast_str_append(str, 0, "%s%s", (ast_str_strlen(*str) ? "," : ""), cause_code->chan_name);
return 0;
}
struct ast_str *ast_channel_dialed_causes_channels(const struct ast_channel *chan)
{
struct ast_str *chanlist = ast_str_create(128);
if (!chanlist) {
return NULL;
}
ao2_callback(chan->dialed_causes, 0, collect_names_cb, &chanlist);
return chanlist;
}
struct ast_control_pvt_cause_code *ast_channel_dialed_causes_find(const struct ast_channel *chan, const char *chan_name)
{
return ao2_find(chan->dialed_causes, chan_name, OBJ_KEY);
}
int ast_channel_dialed_causes_add(const struct ast_channel *chan, const struct ast_control_pvt_cause_code *cause_code, int datalen)
{
struct ast_control_pvt_cause_code *ao2_cause_code;
ao2_find(chan->dialed_causes, cause_code->chan_name, OBJ_KEY | OBJ_UNLINK | OBJ_NODATA);
ao2_cause_code = ao2_alloc(datalen, NULL);
if (ao2_cause_code) {
memcpy(ao2_cause_code, cause_code, datalen);
ao2_link(chan->dialed_causes, ao2_cause_code);
ao2_ref(ao2_cause_code, -1);
return 0;
} else {
return -1;
}
}
void ast_channel_dialed_causes_clear(const struct ast_channel *chan)
{
ao2_callback(chan->dialed_causes, OBJ_UNLINK | OBJ_NODATA | OBJ_MULTIPLE, NULL, NULL);
}
/* \brief Hash function for pvt cause code frames */
static int pvt_cause_hash_fn(const void *vpc, const int flags)
{
const struct ast_control_pvt_cause_code *pc = vpc;
return ast_str_hash(ast_tech_to_upper(ast_strdupa(pc->chan_name)));
}
/* \brief Comparison function for pvt cause code frames */
static int pvt_cause_cmp_fn(void *obj, void *vstr, int flags)
{
struct ast_control_pvt_cause_code *pc = obj;
char *str = ast_tech_to_upper(ast_strdupa(vstr));
char *pc_str = ast_tech_to_upper(ast_strdupa(pc->chan_name));
return !strcmp(pc_str, str) ? CMP_MATCH | CMP_STOP : 0;
}
#define DIALED_CAUSES_BUCKETS 37
struct ast_channel *__ast_channel_internal_alloc(void (*destructor)(void *obj), const char *file, int line, const char *function)
{
struct ast_channel *tmp;
@@ -1214,11 +1281,21 @@ struct ast_channel *__ast_channel_internal_alloc(void (*destructor)(void *obj),
return ast_channel_unref(tmp);
}
if (!(tmp->dialed_causes = ao2_container_alloc(DIALED_CAUSES_BUCKETS, pvt_cause_hash_fn, pvt_cause_cmp_fn))) {
return ast_channel_unref(tmp);
}
return tmp;
}
void ast_channel_internal_cleanup(struct ast_channel *chan)
{
if (chan->dialed_causes) {
ao2_t_ref(chan->dialed_causes, -1,
"done with dialed causes since the channel is going away");
chan->dialed_causes = NULL;
}
ast_string_field_free_memory(chan);
}