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negotiable t38 passthru

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This commit is contained in:
Anthony Minessale
2010-05-26 20:12:54 -05:00
committed by Brian West
parent 041b8da5a4
commit ccf74d5b41
5 changed files with 223 additions and 104 deletions
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src/mod/endpoints/mod_sofia/sofia_glue.c
+155 -54
View File
@@ -45,7 +45,6 @@ void sofia_glue_set_image_sdp(private_object_t *tech_pvt, switch_t38_options_t *
const char *family = "IP4";
const char *username = tech_pvt->profile->username;
//sofia_clear_flag(tech_pvt, TFLAG_ENABLE_SOA);
if (!ip) {
@@ -121,7 +120,7 @@ void sofia_glue_set_image_sdp(private_object_t *tech_pvt, switch_t38_options_t *
t38_options->T38FaxMaxBuffer,
t38_options->T38FaxMaxDatagram,
t38_options->T38FaxUdpEC,
t38_options->T38VendorInfo);
t38_options->T38VendorInfo ? t38_options->T38VendorInfo : "0 0 0");
@@ -3225,8 +3224,6 @@ void sofia_glue_set_r_sdp_codec_string(switch_core_session_t *session, const cha
switch_status_t sofia_glue_tech_media(private_object_t *tech_pvt, const char *r_sdp)
{
sdp_parser_t *parser = NULL;
sdp_session_t *sdp;
uint8_t match = 0;
switch_assert(tech_pvt != NULL);
@@ -3236,18 +3233,7 @@ switch_status_t sofia_glue_tech_media(private_object_t *tech_pvt, const char *r_
return SWITCH_STATUS_FALSE;
}
if ((parser = sdp_parse(NULL, r_sdp, (int) strlen(r_sdp), 0))) {
if (tech_pvt->num_codecs) {
if ((sdp = sdp_session(parser))) {
match = sofia_glue_negotiate_sdp(tech_pvt->session, sdp);
}
}
sdp_parser_free(parser);
}
if (match) {
if ((match = sofia_glue_negotiate_sdp(tech_pvt->session, r_sdp))) {
if (sofia_glue_tech_choose_port(tech_pvt, 0) != SWITCH_STATUS_SUCCESS) {
return SWITCH_STATUS_FALSE;
}
@@ -3287,7 +3273,7 @@ void sofia_glue_toggle_hold(private_object_t *tech_pvt, int sendonly)
if (tech_pvt->max_missed_hold_packets) {
switch_rtp_set_max_missed_packets(tech_pvt->rtp_session, tech_pvt->max_missed_hold_packets);
}
if (!(stream = switch_channel_get_variable(tech_pvt->channel, SWITCH_HOLD_MUSIC_VARIABLE))) {
stream = tech_pvt->profile->hold_music;
}
@@ -3344,7 +3330,112 @@ void sofia_glue_toggle_hold(private_object_t *tech_pvt, int sendonly)
}
}
uint8_t sofia_glue_negotiate_sdp(switch_core_session_t *session, sdp_session_t *sdp)
void sofia_glue_copy_t38_options(switch_t38_options_t *t38_options, switch_core_session_t *session)
{
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_t38_options_t *local_t38_options = switch_channel_get_private(channel, "t38_options");
if (!local_t38_options) {
local_t38_options = switch_core_session_alloc(session, sizeof(switch_t38_options_t));
}
local_t38_options->T38MaxBitRate = t38_options->T38MaxBitRate;
local_t38_options->T38FaxFillBitRemoval = t38_options->T38FaxFillBitRemoval;
local_t38_options->T38FaxTranscodingMMR = t38_options->T38FaxTranscodingMMR;
local_t38_options->T38FaxTranscodingJBIG = t38_options->T38FaxTranscodingJBIG;
local_t38_options->T38FaxRateManagement = t38_options->T38FaxRateManagement;
local_t38_options->T38FaxMaxBuffer = t38_options->T38FaxMaxBuffer;
local_t38_options->T38FaxMaxDatagram = t38_options->T38FaxMaxDatagram;
local_t38_options->T38FaxUdpEC = t38_options->T38FaxUdpEC;
local_t38_options->T38VendorInfo = t38_options->T38VendorInfo;
local_t38_options->ip = NULL;
local_t38_options->port = 0;
switch_channel_set_private(channel, "t38_options", local_t38_options);
}
static switch_t38_options_t *tech_process_udptl(private_object_t *tech_pvt, sdp_session_t *sdp, sdp_media_t *m)
{
switch_t38_options_t *t38_options = switch_channel_get_private(tech_pvt->channel, "t38_options");
sdp_attribute_t *attr;
if (!t38_options) {
t38_options = switch_core_session_alloc(tech_pvt->session, sizeof(switch_t38_options_t));
}
t38_options->port = m->m_port;
if (m->m_connections) {
t38_options->ip = switch_core_session_strdup(tech_pvt->session, m->m_connections->c_address);
} else if (sdp && sdp->sdp_connection) {
t38_options->ip = switch_core_session_strdup(tech_pvt->session, sdp->sdp_connection->c_address);
}
for (attr = m->m_attributes; attr; attr = attr->a_next) {
if (!strcasecmp(attr->a_name, "T38FaxVersion") && attr->a_value) {
t38_options->T38FaxVersion = (uint16_t) atoi(attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38MaxBitRate") && attr->a_value) {
t38_options->T38MaxBitRate = (uint32_t) atoi(attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38FaxFillBitRemoval")) {
t38_options->T38FaxFillBitRemoval = SWITCH_TRUE;
} else if (!strcasecmp(attr->a_name, "T38FaxTranscodingMMR")) {
t38_options->T38FaxTranscodingMMR = SWITCH_TRUE;
} else if (!strcasecmp(attr->a_name, "T38FaxTranscodingJBIG")) {
t38_options->T38FaxTranscodingJBIG = SWITCH_TRUE;
} else if (!strcasecmp(attr->a_name, "T38FaxRateManagement") && attr->a_value) {
t38_options->T38FaxRateManagement = switch_core_session_strdup(tech_pvt->session, attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38FaxMaxBuffer") && attr->a_value) {
t38_options->T38FaxMaxBuffer = (uint32_t) atoi(attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38FaxMaxDatagram") && attr->a_value) {
t38_options->T38FaxMaxDatagram = (uint32_t) atoi(attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38FaxUdpEC") && attr->a_value) {
t38_options->T38FaxUdpEC = switch_core_session_strdup(tech_pvt->session, attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38VendorInfo") && attr->a_value) {
t38_options->T38VendorInfo = switch_core_session_strdup(tech_pvt->session, attr->a_value);
}
}
switch_channel_set_variable(tech_pvt->channel, "has_t38", "true");
switch_channel_set_private(tech_pvt->channel, "t38_options", t38_options);
switch_channel_set_app_flag(tech_pvt->channel, CF_APP_T38);
return t38_options;
}
switch_t38_options_t *sofia_glue_extract_t38_options(switch_core_session_t *session, const char *r_sdp)
{
sdp_media_t *m;
sdp_parser_t *parser = NULL;
sdp_session_t *sdp;
private_object_t *tech_pvt = switch_core_session_get_private(session);
switch_t38_options_t *t38_options = NULL;
if (!(parser = sdp_parse(NULL, r_sdp, (int) strlen(r_sdp), 0))) {
return 0;
}
if (!(sdp = sdp_session(parser))) {
sdp_parser_free(parser);
return 0;
}
switch_assert(tech_pvt != NULL);
for (m = sdp->sdp_media; m; m = m->m_next) {
if (m->m_proto == sdp_proto_udptl && m->m_type == sdp_media_image && m->m_port) {
t38_options = tech_process_udptl(tech_pvt, sdp, m);
break;
}
}
sdp_parser_free(parser);
return t38_options;
}
uint8_t sofia_glue_negotiate_sdp(switch_core_session_t *session, const char *r_sdp)
{
uint8_t match = 0;
switch_payload_t te = 0, cng_pt = 0;
@@ -3361,6 +3452,17 @@ uint8_t sofia_glue_negotiate_sdp(switch_core_session_t *session, sdp_session_t *
const char *crypto = NULL;
int got_crypto = 0, got_audio = 0, got_avp = 0, got_savp = 0, got_udptl = 0;
int scrooge = 0;
sdp_parser_t *parser = NULL;
sdp_session_t *sdp;
if (!(parser = sdp_parse(NULL, r_sdp, (int) strlen(r_sdp), 0))) {
return 0;
}
if (!(sdp = sdp_session(parser))) {
sdp_parser_free(parser);
return 0;
}
switch_assert(tech_pvt != NULL);
@@ -3432,6 +3534,7 @@ uint8_t sofia_glue_negotiate_sdp(switch_core_session_t *session, sdp_session_t *
for (m = sdp->sdp_media; m; m = m->m_next) {
sdp_connection_t *connection;
switch_core_session_t *other_session;
ptime = dptime;
maxptime = dmaxptime;
@@ -3445,47 +3548,42 @@ uint8_t sofia_glue_negotiate_sdp(switch_core_session_t *session, sdp_session_t *
}
if (got_udptl && m->m_type == sdp_media_image && m->m_port) {
switch_t38_options_t *t38_options = switch_channel_get_private(tech_pvt->channel, "t38_options");
switch_t38_options_t *t38_options = tech_process_udptl(tech_pvt, sdp, m);
if (switch_true(switch_channel_get_variable(channel, "refuse_t38"))) {
match = 0;
goto done;
} else {
const char *var = switch_channel_get_variable(channel, "t38_passthru");
int pass = sofia_test_pflag(tech_pvt->profile, PFLAG_T38_PASSTHRU);
if (!t38_options) {
t38_options = switch_core_session_alloc(tech_pvt->session, sizeof(switch_t38_options_t));
}
t38_options->port = m->m_port;
if (var) {
pass = switch_true(var);
}
if (sofia_test_flag(tech_pvt, TFLAG_T38_PASSTHRU)) {
pass = 0;
}
if (m->m_connections) {
t38_options->ip = switch_core_session_strdup(tech_pvt->session, m->m_connections->c_address);
} else if (sdp && sdp->sdp_connection) {
t38_options->ip = switch_core_session_strdup(tech_pvt->session, sdp->sdp_connection->c_address);
}
for (attr = m->m_attributes; attr; attr = attr->a_next) {
if (!strcasecmp(attr->a_name, "T38FaxVersion") && attr->a_value) {
t38_options->T38FaxVersion = (uint16_t) atoi(attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38MaxBitRate") && attr->a_value) {
t38_options->T38MaxBitRate = (uint32_t) atoi(attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38FaxFillBitRemoval")) {
t38_options->T38FaxFillBitRemoval = SWITCH_TRUE;
} else if (!strcasecmp(attr->a_name, "T38FaxTranscodingMMR")) {
t38_options->T38FaxTranscodingMMR = SWITCH_TRUE;
} else if (!strcasecmp(attr->a_name, "T38FaxTranscodingJBIG")) {
t38_options->T38FaxTranscodingJBIG = SWITCH_TRUE;
} else if (!strcasecmp(attr->a_name, "T38FaxRateManagement") && attr->a_value) {
t38_options->T38FaxRateManagement = switch_core_session_strdup(tech_pvt->session, attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38FaxMaxBuffer") && attr->a_value) {
t38_options->T38FaxMaxBuffer = (uint32_t) atoi(attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38FaxMaxDatagram") && attr->a_value) {
t38_options->T38FaxMaxDatagram = (uint32_t) atoi(attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38FaxUdpEC") && attr->a_value) {
t38_options->T38FaxUdpEC = switch_core_session_strdup(tech_pvt->session, attr->a_value);
} else if (!strcasecmp(attr->a_name, "T38VendorInfo") && attr->a_value) {
t38_options->T38VendorInfo = switch_core_session_strdup(tech_pvt->session, attr->a_value);
if (pass && switch_core_session_get_partner(session, &other_session) == SWITCH_STATUS_SUCCESS) {
private_object_t *other_tech_pvt = switch_core_session_get_private(other_session);
switch_core_session_message_t *msg;
sofia_glue_copy_t38_options(t38_options, other_session);
sofia_set_flag(tech_pvt, TFLAG_T38_PASSTHRU);
sofia_set_flag(other_tech_pvt, TFLAG_T38_PASSTHRU);
msg = switch_core_session_alloc(other_session, sizeof(*msg));
msg->message_id = SWITCH_MESSAGE_INDICATE_REQUEST_IMAGE_MEDIA;
msg->from = __FILE__;
msg->string_arg = switch_core_session_strdup(other_session, r_sdp);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Passing T38 req to other leg.\n%s\n", r_sdp);
switch_core_session_queue_message(other_session, msg);
switch_core_session_rwunlock(other_session);
}
}
switch_channel_set_variable(tech_pvt->channel, "has_t38", "true");
switch_channel_set_private(tech_pvt->channel, "t38_options", t38_options);
switch_channel_set_app_flag(tech_pvt->channel, CF_APP_T38);
/* do nothing here, mod_fax will trigger a response (if it's listening =/)*/
match = 1;
goto done;
@@ -3887,6 +3985,9 @@ uint8_t sofia_glue_negotiate_sdp(switch_core_session_t *session, sdp_session_t *
}
done:
if (parser) sdp_parser_free(parser);
tech_pvt->cng_pt = cng_pt;
sofia_set_flag_locked(tech_pvt, TFLAG_SDP);