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freetdm: added channel variable iterator for signaling specific data

This commit is contained in:
Moises Silva 2010-09-01 14:42:34 -04:00
parent 4fc415b6e8
commit a278b6b403
5 changed files with 122 additions and 34 deletions
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20
libs/freetdm/mod_freetdm/mod_freetdm.c
View File

@ -40,7 +40,7 @@
#define FREETDM_LIMIT_REALM "__freetdm"
#define FREETDM_VAR_PREFIX "freetdm_"
#define FREETDM_VAR_PREFIX_LEN 8
#define FREETDM_VAR_PREFIX_LEN (sizeof(FREETDM_VAR_PREFIX)-1)
SWITCH_MODULE_LOAD_FUNCTION(mod_freetdm_load);
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_freetdm_shutdown);
@ -1302,11 +1302,14 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
}
}
ftdm_channel_clear_vars(ftdmchan);
span_id = ftdm_channel_get_span_id(ftdmchan);
chan_id = ftdm_channel_get_id(ftdmchan);
for (h = var_event->headers; h; h = h->next) {
if (!strncasecmp(h->name, FREETDM_VAR_PREFIX, FREETDM_VAR_PREFIX_LEN)) {
char *v = h->name + FREETDM_VAR_PREFIX_LEN;
if (!zstr(v)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Adding outbound freetdm variable %s=%s to channel %d:%d\n", v, h->value, span_id, chan_id);
ftdm_channel_add_var(ftdmchan, v, h->value);
}
}
@ -1317,9 +1320,6 @@ static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *sessi
switch_caller_profile_t *caller_profile;
switch_channel_t *channel = switch_core_session_get_channel(*new_session);
span_id = ftdm_channel_get_span_id(ftdmchan);
chan_id = ftdm_channel_get_id(ftdmchan);
switch_core_session_add_stream(*new_session, NULL);
if ((tech_pvt = (private_t *) switch_core_session_alloc(*new_session, sizeof(private_t))) != 0) {
tech_init(tech_pvt, *new_session, ftdmchan);
@ -1403,6 +1403,9 @@ ftdm_status_t ftdm_channel_from_event(ftdm_sigmsg_t *sigmsg, switch_core_session
switch_core_session_t *session = NULL;
private_t *tech_pvt = NULL;
switch_channel_t *channel = NULL;
ftdm_iterator_t *iter = NULL;
const char *var_name = NULL;
const char *var_value = NULL;
uint32_t spanid, chanid;
char name[128];
ftdm_caller_data_t *channel_caller_data = ftdm_channel_get_caller_data(sigmsg->channel);
@ -1511,6 +1514,13 @@ ftdm_status_t ftdm_channel_from_event(ftdm_sigmsg_t *sigmsg, switch_core_session
if (channel_caller_data->raw_data_len) {
switch_channel_set_variable_printf(channel, "freetdm_custom_call_data", "%s", channel_caller_data->raw_data);
}
/* Add any channel variable to the dial plan */
iter = ftdm_channel_get_var_iterator(sigmsg->channel);
for ( ; iter; iter = ftdm_iterator_next(iter)) {
ftdm_channel_get_current_var(iter, &var_name, &var_value);
snprintf(name, sizeof(name), FREETDM_VAR_PREFIX "%s", var_name);
switch_channel_set_variable_printf(channel, name, "%s", var_value);
}
switch_channel_set_state(channel, CS_INIT);
if (switch_core_session_thread_launch(session) != SWITCH_STATUS_SUCCESS) {

107
libs/freetdm/src/ftdm_io.c
View File

@ -400,8 +400,6 @@ static ftdm_status_t ftdm_channel_destroy(ftdm_channel_t *ftdmchan)
ftdm_buffer_destroy(&ftdmchan->fsk_buffer);
ftdmchan->pre_buffer_size = 0;
hashtable_destroy(ftdmchan->variable_hash);
ftdm_safe_free(ftdmchan->dtmf_hangup_buf);
if (ftdmchan->tone_session.buffer) {
@ -812,7 +810,6 @@ FT_DECLARE(ftdm_status_t) ftdm_span_add_channel(ftdm_span_t *span, ftdm_socket_t
ftdm_buffer_create(&new_chan->digit_buffer, 128, 128, 0);
ftdm_buffer_create(&new_chan->gen_dtmf_buffer, 128, 128, 0);
new_chan->variable_hash = create_hashtable(16, ftdm_hash_hashfromstring, ftdm_hash_equalkeys);
new_chan->dtmf_hangup_buf = ftdm_calloc (span->dtmf_hangup_len + 1, sizeof (char));
@ -2213,9 +2210,10 @@ static void close_dtmf_debug(ftdm_channel_t *ftdmchan)
}
#endif
static ftdm_status_t ftdm_channel_clear_vars(ftdm_channel_t *ftdmchan);
FT_DECLARE(ftdm_status_t) ftdm_channel_done(ftdm_channel_t *ftdmchan)
{
assert(ftdmchan != NULL);
ftdm_assert_return(ftdmchan != NULL, FTDM_FAIL, "Null channel can't be done!\n");
ftdm_mutex_lock(ftdmchan->mutex);
@ -2243,6 +2241,7 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_done(ftdm_channel_t *ftdmchan)
#ifdef FTDM_DEBUG_DTMF
close_dtmf_debug(ftdmchan);
#endif
ftdm_channel_clear_vars(ftdmchan);
ftdmchan->init_state = FTDM_CHANNEL_STATE_DOWN;
ftdmchan->state = FTDM_CHANNEL_STATE_DOWN;
@ -3368,8 +3367,8 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_write(ftdm_channel_t *ftdmchan, void *dat
ftdm_size_t max = datasize;
unsigned int i = 0;
assert(ftdmchan != NULL);
assert(ftdmchan->fio != NULL);
ftdm_assert_return(ftdmchan != NULL, FTDM_FAIL, "null channel on write!\n");
ftdm_assert_return(ftdmchan->fio != NULL, FTDM_FAIL, "null I/O on write!\n");
if (!ftdmchan->buffer_delay &&
((ftdmchan->dtmf_buffer && ftdm_buffer_inuse(ftdmchan->dtmf_buffer)) ||
@ -3421,16 +3420,16 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_write(ftdm_channel_t *ftdmchan, void *dat
return status;
}
FT_DECLARE(ftdm_status_t) ftdm_channel_clear_vars(ftdm_channel_t *ftdmchan)
static ftdm_status_t ftdm_channel_clear_vars(ftdm_channel_t *ftdmchan)
{
if(ftdmchan->variable_hash) {
ftdm_channel_lock(ftdmchan);
if (ftdmchan->variable_hash) {
hashtable_destroy(ftdmchan->variable_hash);
}
ftdmchan->variable_hash = create_hashtable(16, ftdm_hash_hashfromstring, ftdm_hash_equalkeys);
ftdmchan->variable_hash = NULL;
if(!ftdmchan->variable_hash)
return FTDM_FAIL;
ftdm_channel_unlock(ftdmchan);
return FTDM_SUCCESS;
}
@ -3438,34 +3437,98 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_add_var(ftdm_channel_t *ftdmchan, const c
{
char *t_name = 0, *t_val = 0;
if(!ftdmchan->variable_hash || !var_name || !value)
{
ftdm_status_t status = FTDM_FAIL;
if (!var_name || !value) {
return FTDM_FAIL;
}
ftdm_channel_lock(ftdmchan);
if (!ftdmchan->variable_hash) {
/* initialize on first use */
ftdmchan->variable_hash = create_hashtable(16, ftdm_hash_hashfromstring, ftdm_hash_equalkeys);
if (!ftdmchan->variable_hash) {
goto done;
}
}
t_name = ftdm_strdup(var_name);
t_val = ftdm_strdup(value);
if(hashtable_insert(ftdmchan->variable_hash, t_name, t_val, HASHTABLE_FLAG_FREE_KEY | HASHTABLE_FLAG_FREE_VALUE)) {
return FTDM_SUCCESS;
}
return FTDM_FAIL;
hashtable_insert(ftdmchan->variable_hash, t_name, t_val, HASHTABLE_FLAG_FREE_KEY | HASHTABLE_FLAG_FREE_VALUE);
status = FTDM_SUCCESS;
done:
ftdm_channel_unlock(ftdmchan);
return status;
}
FT_DECLARE(const char *) ftdm_channel_get_var(ftdm_channel_t *ftdmchan, const char *var_name)
{
if(!ftdmchan->variable_hash || !var_name)
{
const char *var = NULL;
ftdm_channel_lock(ftdmchan);
if (!ftdmchan->variable_hash || !var_name) {
goto done;
}
var = (const char *)hashtable_search(ftdmchan->variable_hash, (void *)var_name);
done:
ftdm_channel_unlock(ftdmchan);
return var;
}
FT_DECLARE(ftdm_iterator_t *) ftdm_channel_get_var_iterator(const ftdm_channel_t *ftdmchan)
{
ftdm_hash_iterator_t *iter = NULL;
ftdm_channel_lock(ftdmchan);
iter = ftdmchan->variable_hash == NULL ? NULL : hashtable_first(ftdmchan->variable_hash);
ftdm_channel_unlock(ftdmchan);
return iter;
}
FT_DECLARE(ftdm_status_t) ftdm_channel_get_current_var(ftdm_iterator_t *iter, const char **var_name, const char **var_val)
{
const void *key = NULL;
void *val = NULL;
*var_name = NULL;
*var_val = NULL;
if (!iter) {
return FTDM_FAIL;
}
hashtable_this(iter, &key, NULL, &val);
*var_name = key;
*var_val = val;
return FTDM_SUCCESS;
}
FT_DECLARE(ftdm_iterator_t *) ftdm_iterator_next(ftdm_iterator_t *iter)
{
if (!iter) {
return NULL;
}
return (const char *) hashtable_search(ftdmchan->variable_hash, (void *)var_name);
return hashtable_next(iter);
}
static struct {
ftdm_io_interface_t *pika_interface;
} interfaces;
FT_DECLARE(char *) ftdm_api_execute(const char *cmd)
{
ftdm_io_interface_t *fio = NULL;

6
libs/freetdm/src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn.c
View File

@ -35,7 +35,6 @@
#include "ftmod_sangoma_isdn.h"
#define FTDM_DEBUG_CHAN_MEMORY
#ifdef FTDM_DEBUG_CHAN_MEMORY
#include <sys/mman.h>
@ -472,7 +471,10 @@ static void ftdm_sangoma_isdn_process_state_change(ftdm_channel_t *ftdmchan)
case FTDM_CHANNEL_STATE_RING: /* incoming call request */
{
ftdm_log_chan(ftdmchan, FTDM_LOG_DEBUG, "Sending incoming call from %s to %s to FTDM core\n", ftdmchan->caller_data.ani.digits, ftdmchan->caller_data.dnis.digits);
ftdm_channel_add_var(ftdmchan, "isdn_specific_var", "1");
ftdm_channel_add_var(ftdmchan, "isdn_crap", "morecrap");
ftdm_channel_add_var(ftdmchan, "isdn_stuff", "s");
ftdm_channel_add_var(ftdmchan, "isdn_d", "asdsadasdasdsad");
/* we have enough information to inform FTDM of the call*/
sigev.event_id = FTDM_SIGEVENT_START;
ftdm_span_send_signal(ftdmchan->span, &sigev);

22
libs/freetdm/src/include/freetdm.h
View File

@ -381,6 +381,9 @@ typedef struct ftdm_conf_parameter {
void *ptr;
} ftdm_conf_parameter_t;
/*! \brief Opaque general purpose iterator */
typedef void ftdm_iterator_t;
/*! \brief Channel commands that can be executed through ftdm_channel_command() */
typedef enum {
FTDM_COMMAND_NOOP,
@ -1014,14 +1017,25 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_read(ftdm_channel_t *ftdmchan, void *data
*/
FT_DECLARE(ftdm_status_t) ftdm_channel_write(ftdm_channel_t *ftdmchan, void *data, ftdm_size_t datasize, ftdm_size_t *datalen);
/*! \brief Add a custom variable to the channel */
/*! \brief Add a custom variable to the channel
* \note This variables may be used by signaling modules to override signaling parameters
* \todo Document which signaling variables are available
* */
FT_DECLARE(ftdm_status_t) ftdm_channel_add_var(ftdm_channel_t *ftdmchan, const char *var_name, const char *value);
/*! \brief Get a custom variable from the channel */
/*! \brief Get a custom variable from the channel.
* \note The variable pointer returned is only valid while the channel is open and it'll be destroyed when the channel is closed. */
FT_DECLARE(const char *) ftdm_channel_get_var(ftdm_channel_t *ftdmchan, const char *var_name);
/*! \brief Clear custom channel variables from the channel */
FT_DECLARE(ftdm_status_t) ftdm_channel_clear_vars(ftdm_channel_t *ftdmchan);
/*! \brief Get an iterator to iterate over the channel variables
* \note The iterator pointer returned is only valid while the channel is open and it'll be destroyed when the channel is closed. */
FT_DECLARE(ftdm_iterator_t *) ftdm_channel_get_var_iterator(const ftdm_channel_t *ftdmchan);
/*! \brief Get variable name and value for the current iterator position */
FT_DECLARE(ftdm_status_t) ftdm_channel_get_current_var(ftdm_iterator_t *iter, const char **var_name, const char **var_val);
/*! \brief Advance iterator */
FT_DECLARE(ftdm_iterator_t *) ftdm_iterator_next(ftdm_iterator_t *iter);
/*! \brief Get the span pointer associated to the channel */
FT_DECLARE(ftdm_span_t *) ftdm_channel_get_span(const ftdm_channel_t *ftdmchan);

1
libs/freetdm/src/include/private/ftdm_core.h
View File

@ -579,7 +579,6 @@ FT_DECLARE(ftdm_status_t) ftdm_span_next_event(ftdm_span_t *span, ftdm_event_t *
*/
FT_DECLARE(ftdm_status_t) ftdm_channel_queue_dtmf(ftdm_channel_t *ftdmchan, const char *dtmf);
/*!
\brief Assert condition
*/