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From 0ed41eb5fd0e4192e1b7dc374f819d17aef3e805 Mon Sep 17 00:00:00 2001
From: George Joseph <gtjoseph@users.noreply.github.com>
Date: Tue, 21 Dec 2021 19:32:22 -0700
Subject: [PATCH] sip_inv: Additional multipart support (#2919) (#2920)
---
pjsip/include/pjsip-ua/sip_inv.h | 108 ++++++++++-
pjsip/src/pjsip-ua/sip_inv.c | 240 ++++++++++++++++++++-----
pjsip/src/test/inv_offer_answer_test.c | 103 ++++++++++-
3 files changed, 394 insertions(+), 57 deletions(-)
--- a/pjsip/include/pjsip-ua/sip_inv.h
+++ b/pjsip/include/pjsip-ua/sip_inv.h
@@ -451,11 +451,11 @@ struct pjsip_inv_session
/**
- * This structure represents SDP information in a pjsip_rx_data. Application
- * retrieve this information by calling #pjsip_rdata_get_sdp_info(). This
+ * This structure represents SDP information in a pjsip_(rx|tx)_data. Application
+ * retrieve this information by calling #pjsip_get_sdp_info(). This
* mechanism supports multipart message body.
*/
-typedef struct pjsip_rdata_sdp_info
+typedef struct pjsip_sdp_info
{
/**
* Pointer and length of the text body in the incoming message. If
@@ -475,7 +475,15 @@ typedef struct pjsip_rdata_sdp_info
*/
pjmedia_sdp_session *sdp;
-} pjsip_rdata_sdp_info;
+} pjsip_sdp_info;
+
+/**
+ * For backwards compatibility and completeness,
+ * pjsip_rdata_sdp_info and pjsip_tdata_sdp_info
+ * are typedef'd to pjsip_sdp_info.
+ */
+typedef pjsip_sdp_info pjsip_rdata_sdp_info;
+typedef pjsip_sdp_info pjsip_tdata_sdp_info;
/**
@@ -1046,6 +1054,44 @@ PJ_DECL(pj_status_t) pjsip_create_sdp_bo
pjsip_msg_body **p_body);
/**
+ * This is a utility function to create a multipart body with the
+ * SIP body as the first part.
+ *
+ * @param pool Pool to allocate memory.
+ * @param sdp SDP session to be put in the SIP message body.
+ * @param p_body Pointer to receive SIP message body containing
+ * the SDP session.
+ *
+ * @return PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjsip_create_multipart_sdp_body( pj_pool_t *pool,
+ pjmedia_sdp_session *sdp,
+ pjsip_msg_body **p_body);
+
+/**
+ * Retrieve SDP information from a message body. Application should
+ * prefer to use this function rather than parsing the SDP manually since
+ * this function supports multipart message body.
+ *
+ * This function will only parse the SDP once, the first time it is called
+ * on the same message. Subsequent call on the same message will just pick
+ * up the already parsed SDP from the message.
+ *
+ * @param pool Pool to allocate memory.
+ * @param body The message body.
+ * @param msg_media_type From the rdata or tdata Content-Type header, if available.
+ * If NULL, the content_type from the body will be used.
+ * @param search_media_type The media type to search for.
+ * If NULL, "application/sdp" will be used.
+ *
+ * @return The SDP info.
+ */
+PJ_DECL(pjsip_sdp_info*) pjsip_get_sdp_info(pj_pool_t *pool,
+ pjsip_msg_body *body,
+ pjsip_media_type *msg_media_type,
+ const pjsip_media_type *search_media_type);
+
+/**
* Retrieve SDP information from an incoming message. Application should
* prefer to use this function rather than parsing the SDP manually since
* this function supports multipart message body.
@@ -1061,6 +1107,60 @@ PJ_DECL(pj_status_t) pjsip_create_sdp_bo
PJ_DECL(pjsip_rdata_sdp_info*) pjsip_rdata_get_sdp_info(pjsip_rx_data *rdata);
+/**
+ * Retrieve SDP information from an incoming message. Application should
+ * prefer to use this function rather than parsing the SDP manually since
+ * this function supports multipart message body.
+ *
+ * This function will only parse the SDP once, the first time it is called
+ * on the same message. Subsequent call on the same message will just pick
+ * up the already parsed SDP from the message.
+ *
+ * @param rdata The incoming message.
+ * @param search_media_type The SDP media type to search for.
+ * If NULL, "application/sdp" will be used.
+ *
+ * @return The SDP info.
+ */
+PJ_DECL(pjsip_rdata_sdp_info*) pjsip_rdata_get_sdp_info2(
+ pjsip_rx_data *rdata,
+ const pjsip_media_type *search_media_type);
+
+/**
+ * Retrieve SDP information from an outgoing message. Application should
+ * prefer to use this function rather than parsing the SDP manually since
+ * this function supports multipart message body.
+ *
+ * This function will only parse the SDP once, the first time it is called
+ * on the same message. Subsequent call on the same message will just pick
+ * up the already parsed SDP from the message.
+ *
+ * @param tdata The outgoing message.
+ *
+ * @return The SDP info.
+ */
+PJ_DECL(pjsip_tdata_sdp_info*) pjsip_tdata_get_sdp_info(pjsip_tx_data *tdata);
+
+/**
+ * Retrieve SDP information from an outgoing message. Application should
+ * prefer to use this function rather than parsing the SDP manually since
+ * this function supports multipart message body.
+ *
+ * This function will only parse the SDP once, the first time it is called
+ * on the same message. Subsequent call on the same message will just pick
+ * up the already parsed SDP from the message.
+ *
+ * @param tdata The outgoing message.
+ * @param search_media_type The SDP media type to search for.
+ * If NULL, "application/sdp" will be used.
+ *
+ * @return The SDP info.
+ */
+PJ_DECL(pjsip_tdata_sdp_info*) pjsip_tdata_get_sdp_info2(
+ pjsip_tx_data *tdata,
+ const pjsip_media_type *search_media_type);
+
+
PJ_END_DECL
/**
--- a/pjsip/src/pjsip-ua/sip_inv.c
+++ b/pjsip/src/pjsip-ua/sip_inv.c
@@ -118,6 +118,8 @@ static pj_status_t handle_timer_response
static pj_bool_t inv_check_secure_dlg(pjsip_inv_session *inv,
pjsip_event *e);
+static int print_sdp(pjsip_msg_body *body, char *buf, pj_size_t len);
+
static void (*inv_state_handler[])( pjsip_inv_session *inv, pjsip_event *e) =
{
&inv_on_state_null,
@@ -956,66 +958,170 @@ PJ_DEF(pj_status_t) pjsip_inv_create_uac
return PJ_SUCCESS;
}
-PJ_DEF(pjsip_rdata_sdp_info*) pjsip_rdata_get_sdp_info(pjsip_rx_data *rdata)
-{
- pjsip_rdata_sdp_info *sdp_info;
- pjsip_msg_body *body = rdata->msg_info.msg->body;
- pjsip_ctype_hdr *ctype_hdr = rdata->msg_info.ctype;
- pjsip_media_type app_sdp;
+PJ_DEF(pjsip_sdp_info*) pjsip_get_sdp_info(pj_pool_t *pool,
+ pjsip_msg_body *body,
+ pjsip_media_type *msg_media_type,
+ const pjsip_media_type *search_media_type)
+{
+ pjsip_sdp_info *sdp_info;
+ pjsip_media_type search_type;
+ pjsip_media_type multipart_mixed;
+ pjsip_media_type multipart_alternative;
+ pjsip_media_type *msg_type;
+ pj_status_t status;
- sdp_info = (pjsip_rdata_sdp_info*)
- rdata->endpt_info.mod_data[mod_inv.mod.id];
- if (sdp_info)
- return sdp_info;
+ sdp_info = PJ_POOL_ZALLOC_T(pool,
+ pjsip_sdp_info);
- sdp_info = PJ_POOL_ZALLOC_T(rdata->tp_info.pool,
- pjsip_rdata_sdp_info);
PJ_ASSERT_RETURN(mod_inv.mod.id >= 0, sdp_info);
- rdata->endpt_info.mod_data[mod_inv.mod.id] = sdp_info;
- pjsip_media_type_init2(&app_sdp, "application", "sdp");
+ if (!body) {
+ return sdp_info;
+ }
- if (body && ctype_hdr &&
- pj_stricmp(&ctype_hdr->media.type, &app_sdp.type)==0 &&
- pj_stricmp(&ctype_hdr->media.subtype, &app_sdp.subtype)==0)
+ if (msg_media_type) {
+ msg_type = msg_media_type;
+ } else {
+ if (body->content_type.type.slen == 0) {
+ return sdp_info;
+ }
+ msg_type = &body->content_type;
+ }
+
+ if (!search_media_type) {
+ pjsip_media_type_init2(&search_type, "application", "sdp");
+ } else {
+ pj_memcpy(&search_type, search_media_type, sizeof(search_type));
+ }
+
+ pjsip_media_type_init2(&multipart_mixed, "multipart", "mixed");
+ pjsip_media_type_init2(&multipart_alternative, "multipart", "alternative");
+
+ if (pjsip_media_type_cmp(msg_type, &search_type, PJ_FALSE) == 0)
{
- sdp_info->body.ptr = (char*)body->data;
- sdp_info->body.slen = body->len;
- } else if (body && ctype_hdr &&
- pj_stricmp2(&ctype_hdr->media.type, "multipart")==0 &&
- (pj_stricmp2(&ctype_hdr->media.subtype, "mixed")==0 ||
- pj_stricmp2(&ctype_hdr->media.subtype, "alternative")==0))
+ /*
+ * If the print_body function is print_sdp, we know that
+ * body->data is a pjmedia_sdp_session object and came from
+ * a tx_data. If not, it's the text representation of the
+ * sdp from an rx_data.
+ */
+ if (body->print_body == print_sdp) {
+ sdp_info->sdp = body->data;
+ } else {
+ sdp_info->body.ptr = (char*)body->data;
+ sdp_info->body.slen = body->len;
+ }
+ } else if (pjsip_media_type_cmp(&multipart_mixed, msg_type, PJ_FALSE) == 0 ||
+ pjsip_media_type_cmp(&multipart_alternative, msg_type, PJ_FALSE) == 0)
{
- pjsip_multipart_part *part;
+ pjsip_multipart_part *part;
+ part = pjsip_multipart_find_part(body, &search_type, NULL);
+ if (part) {
+ if (part->body->print_body == print_sdp) {
+ sdp_info->sdp = part->body->data;
+ } else {
+ sdp_info->body.ptr = (char*)part->body->data;
+ sdp_info->body.slen = part->body->len;
+ }
+ }
+ }
- part = pjsip_multipart_find_part(body, &app_sdp, NULL);
- if (part) {
- sdp_info->body.ptr = (char*)part->body->data;
- sdp_info->body.slen = part->body->len;
- }
+ /*
+ * If the body was already a pjmedia_sdp_session, we can just
+ * return it. If not and there wasn't a text representation
+ * of the sdp either, we can also just return.
+ */
+ if (sdp_info->sdp || !sdp_info->body.ptr) {
+ return sdp_info;
}
- if (sdp_info->body.ptr) {
- pj_status_t status;
- status = pjmedia_sdp_parse(rdata->tp_info.pool,
- sdp_info->body.ptr,
- sdp_info->body.slen,
- &sdp_info->sdp);
- if (status == PJ_SUCCESS)
- status = pjmedia_sdp_validate2(sdp_info->sdp, PJ_FALSE);
+ /*
+ * If the body was the text representation of teh SDP, we need
+ * to parse it to create a pjmedia_sdp_session object.
+ */
+ status = pjmedia_sdp_parse(pool,
+ sdp_info->body.ptr,
+ sdp_info->body.slen,
+ &sdp_info->sdp);
+ if (status == PJ_SUCCESS)
+ status = pjmedia_sdp_validate2(sdp_info->sdp, PJ_FALSE);
- if (status != PJ_SUCCESS) {
- sdp_info->sdp = NULL;
- PJ_PERROR(1,(THIS_FILE, status,
- "Error parsing/validating SDP body"));
- }
+ if (status != PJ_SUCCESS) {
+ sdp_info->sdp = NULL;
+ PJ_PERROR(1, (THIS_FILE, status,
+ "Error parsing/validating SDP body"));
+ }
+
+ sdp_info->sdp_err = status;
+
+ return sdp_info;
+}
+
+PJ_DEF(pjsip_rdata_sdp_info*) pjsip_rdata_get_sdp_info2(
+ pjsip_rx_data *rdata,
+ const pjsip_media_type *search_media_type)
+{
+ pjsip_media_type *msg_media_type = NULL;
+ pjsip_rdata_sdp_info *sdp_info;
- sdp_info->sdp_err = status;
+ if (rdata->endpt_info.mod_data[mod_inv.mod.id]) {
+ return (pjsip_rdata_sdp_info *)rdata->endpt_info.mod_data[mod_inv.mod.id];
+ }
+
+ /*
+ * rdata should have a Content-Type header at this point but we'll
+ * make sure.
+ */
+ if (rdata->msg_info.ctype) {
+ msg_media_type = &rdata->msg_info.ctype->media;
}
+ sdp_info = pjsip_get_sdp_info(rdata->tp_info.pool,
+ rdata->msg_info.msg->body,
+ msg_media_type,
+ search_media_type);
+ rdata->endpt_info.mod_data[mod_inv.mod.id] = sdp_info;
return sdp_info;
}
+PJ_DEF(pjsip_rdata_sdp_info*) pjsip_rdata_get_sdp_info(pjsip_rx_data *rdata)
+{
+ return pjsip_rdata_get_sdp_info2(rdata, NULL);
+}
+
+PJ_DEF(pjsip_tdata_sdp_info*) pjsip_tdata_get_sdp_info2(
+ pjsip_tx_data *tdata,
+ const pjsip_media_type *search_media_type)
+{
+ pjsip_ctype_hdr *ctype_hdr = NULL;
+ pjsip_media_type *msg_media_type = NULL;
+ pjsip_tdata_sdp_info *sdp_info;
+
+ if (tdata->mod_data[mod_inv.mod.id]) {
+ return (pjsip_tdata_sdp_info *)tdata->mod_data[mod_inv.mod.id];
+ }
+ /*
+ * tdata won't usually have a Content-Type header at this point
+ * but we'll check just the same,
+ */
+ ctype_hdr = pjsip_msg_find_hdr(tdata->msg, PJSIP_H_CONTENT_TYPE, NULL);
+ if (ctype_hdr) {
+ msg_media_type = &ctype_hdr->media;
+ }
+
+ sdp_info = pjsip_get_sdp_info(tdata->pool,
+ tdata->msg->body,
+ msg_media_type,
+ search_media_type);
+ tdata->mod_data[mod_inv.mod.id] = sdp_info;
+
+ return sdp_info;
+}
+
+PJ_DEF(pjsip_tdata_sdp_info*) pjsip_tdata_get_sdp_info(pjsip_tx_data *tdata)
+{
+ return pjsip_tdata_get_sdp_info2(tdata, NULL);
+}
/*
* Verify incoming INVITE request.
@@ -1740,13 +1846,55 @@ PJ_DEF(pj_status_t) pjsip_create_sdp_bod
return PJ_SUCCESS;
}
+static pjsip_multipart_part* create_sdp_part(pj_pool_t *pool, pjmedia_sdp_session *sdp)
+{
+ pjsip_multipart_part *sdp_part;
+ pjsip_media_type media_type;
+
+ pjsip_media_type_init2(&media_type, "application", "sdp");
+
+ sdp_part = pjsip_multipart_create_part(pool);
+ PJ_ASSERT_RETURN(sdp_part != NULL, NULL);
+
+ sdp_part->body = PJ_POOL_ZALLOC_T(pool, pjsip_msg_body);
+ PJ_ASSERT_RETURN(sdp_part->body != NULL, NULL);
+
+ pjsip_media_type_cp(pool, &sdp_part->body->content_type, &media_type);
+
+ sdp_part->body->data = sdp;
+ sdp_part->body->clone_data = clone_sdp;
+ sdp_part->body->print_body = print_sdp;
+
+ return sdp_part;
+}
+
+PJ_DEF(pj_status_t) pjsip_create_multipart_sdp_body(pj_pool_t *pool,
+ pjmedia_sdp_session *sdp,
+ pjsip_msg_body **p_body)
+{
+ pjsip_media_type media_type;
+ pjsip_msg_body *multipart;
+ pjsip_multipart_part *sdp_part;
+
+ pjsip_media_type_init2(&media_type, "multipart", "mixed");
+ multipart = pjsip_multipart_create(pool, &media_type, NULL);
+ PJ_ASSERT_RETURN(multipart != NULL, PJ_ENOMEM);
+
+ sdp_part = create_sdp_part(pool, sdp);
+ PJ_ASSERT_RETURN(sdp_part != NULL, PJ_ENOMEM);
+ pjsip_multipart_add_part(pool, multipart, sdp_part);
+ *p_body = multipart;
+
+ return PJ_SUCCESS;
+}
+
static pjsip_msg_body *create_sdp_body(pj_pool_t *pool,
const pjmedia_sdp_session *c_sdp)
{
pjsip_msg_body *body;
pj_status_t status;
- status = pjsip_create_sdp_body(pool,
+ status = pjsip_create_sdp_body(pool,
pjmedia_sdp_session_clone(pool, c_sdp),
&body);
@@ -2069,6 +2217,7 @@ static pj_status_t inv_check_sdp_in_inco
)
)
{
+ pjsip_sdp_info *tdata_sdp_info;
const pjmedia_sdp_session *reoffer_sdp = NULL;
PJ_LOG(4,(inv->obj_name, "Received %s response "
@@ -2077,14 +2226,15 @@ static pj_status_t inv_check_sdp_in_inco
(st_code/10==18? "early" : "final" )));
/* Retrieve original SDP offer from INVITE request */
- reoffer_sdp = (const pjmedia_sdp_session*)
- tsx->last_tx->msg->body->data;
+ tdata_sdp_info = pjsip_tdata_get_sdp_info(tsx->last_tx);
+ reoffer_sdp = tdata_sdp_info->sdp;
/* Feed the original offer to negotiator */
status = pjmedia_sdp_neg_modify_local_offer2(inv->pool_prov,
inv->neg,
inv->sdp_neg_flags,
reoffer_sdp);
+
if (status != PJ_SUCCESS) {
PJ_LOG(1,(inv->obj_name, "Error updating local offer for "
"forked 2xx/18x response (err=%d)", status));
--- a/pjsip/src/test/inv_offer_answer_test.c
+++ b/pjsip/src/test/inv_offer_answer_test.c
@@ -137,6 +137,7 @@ typedef struct inv_test_param_t
pj_bool_t need_established;
unsigned count;
oa_t oa[4];
+ pj_bool_t multipart_body;
} inv_test_param_t;
typedef struct inv_test_t
@@ -257,6 +258,17 @@ static void on_media_update(pjsip_inv_se
}
}
+ /* Special handling for standard offer/answer */
+ if (inv_test.param.count == 1 &&
+ inv_test.param.oa[0] == OFFERER_UAC &&
+ inv_test.param.need_established)
+ {
+ jobs[job_cnt].type = ESTABLISH_CALL;
+ jobs[job_cnt].who = PJSIP_ROLE_UAS;
+ job_cnt++;
+ TRACE_((THIS_FILE, " C+++"));
+ }
+
pj_assert(job_cnt <= PJ_ARRAY_SIZE(jobs));
}
}
@@ -333,6 +345,15 @@ static pj_bool_t on_rx_request(pjsip_rx_
NULL, &tdata);
pj_assert(status == PJ_SUCCESS);
+ /* Use multipart body, if configured */
+ if (sdp && inv_test.param.multipart_body) {
+ status = pjsip_create_multipart_sdp_body(
+ tdata->pool,
+ pjmedia_sdp_session_clone(tdata->pool, sdp),
+ &tdata->msg->body);
+ }
+ pj_assert(status == PJ_SUCCESS);
+
status = pjsip_inv_send_msg(inv_test.uas, tdata);
pj_assert(status == PJ_SUCCESS);
@@ -426,6 +447,7 @@ static int perform_test(inv_test_param_t
sdp = NULL;
status = pjsip_inv_create_uac(dlg, sdp, inv_test.param.inv_option, &inv_test.uac);
+ //inv_test.uac->create_multipart = param->multipart_body;
PJ_ASSERT_RETURN(status==PJ_SUCCESS, -20);
TRACE_((THIS_FILE, " Sending INVITE %s offer", (sdp ? "with" : "without")));
@@ -436,8 +458,17 @@ static int perform_test(inv_test_param_t
status = pjsip_inv_invite(inv_test.uac, &tdata);
PJ_ASSERT_RETURN(status==PJ_SUCCESS, -30);
+ /* Use multipart body, if configured */
+ if (sdp && param->multipart_body) {
+ status = pjsip_create_multipart_sdp_body(
+ tdata->pool,
+ pjmedia_sdp_session_clone(tdata->pool, sdp),
+ &tdata->msg->body);
+ }
+ PJ_ASSERT_RETURN(status==PJ_SUCCESS, -40);
+
status = pjsip_inv_send_msg(inv_test.uac, tdata);
- PJ_ASSERT_RETURN(status==PJ_SUCCESS, -30);
+ PJ_ASSERT_RETURN(status==PJ_SUCCESS, -50);
/*
* Wait until test completes
@@ -525,13 +556,14 @@ static inv_test_param_t test_params[] =
200/INVITE (answer) <--
ACK -->
*/
-#if 0
+#if 1
{
"Standard INVITE with offer",
0,
PJ_TRUE,
1,
- { OFFERER_UAC }
+ { OFFERER_UAC },
+ PJ_FALSE
},
{
@@ -539,7 +571,25 @@ static inv_test_param_t test_params[] =
PJSIP_INV_REQUIRE_100REL,
PJ_TRUE,
1,
- { OFFERER_UAC }
+ { OFFERER_UAC },
+ PJ_FALSE
+ },
+ {
+ "Standard INVITE with offer, with Multipart",
+ 0,
+ PJ_TRUE,
+ 1,
+ { OFFERER_UAC },
+ PJ_TRUE
+ },
+
+ {
+ "Standard INVITE with offer, with 100rel, with Multipart",
+ PJSIP_INV_REQUIRE_100REL,
+ PJ_TRUE,
+ 1,
+ { OFFERER_UAC },
+ PJ_TRUE
},
#endif
@@ -555,7 +605,8 @@ static inv_test_param_t test_params[] =
0,
PJ_TRUE,
1,
- { OFFERER_UAS }
+ { OFFERER_UAS },
+ PJ_FALSE
},
{
@@ -563,7 +614,25 @@ static inv_test_param_t test_params[] =
PJSIP_INV_REQUIRE_100REL,
PJ_TRUE,
1,
- { OFFERER_UAS }
+ { OFFERER_UAS },
+ PJ_FALSE
+ },
+ {
+ "INVITE with no offer, with Multipart",
+ 0,
+ PJ_TRUE,
+ 1,
+ { OFFERER_UAS },
+ PJ_TRUE
+ },
+
+ {
+ "INVITE with no offer, with 100rel, with Multipart",
+ PJSIP_INV_REQUIRE_100REL,
+ PJ_TRUE,
+ 1,
+ { OFFERER_UAS },
+ PJ_TRUE
},
#endif
@@ -584,14 +653,24 @@ static inv_test_param_t test_params[] =
0,
PJ_TRUE,
2,
- { OFFERER_UAC, OFFERER_UAC }
+ { OFFERER_UAC, OFFERER_UAC },
+ PJ_FALSE
+ },
+ {
+ "INVITE and UPDATE by UAC, with Multipart",
+ 0,
+ PJ_TRUE,
+ 2,
+ { OFFERER_UAC, OFFERER_UAC },
+ PJ_TRUE
},
{
"INVITE and UPDATE by UAC, with 100rel",
PJSIP_INV_REQUIRE_100REL,
PJ_TRUE,
2,
- { OFFERER_UAC, OFFERER_UAC }
+ { OFFERER_UAC, OFFERER_UAC },
+ PJ_FALSE
},
#endif
@@ -617,6 +696,14 @@ static inv_test_param_t test_params[] =
4,
{ OFFERER_UAC, OFFERER_UAS, OFFERER_UAC, OFFERER_UAS }
},
+ {
+ "INVITE and many UPDATE by UAC and UAS, with Multipart",
+ 0,
+ PJ_TRUE,
+ 4,
+ { OFFERER_UAC, OFFERER_UAS, OFFERER_UAC, OFFERER_UAS },
+ PJ_TRUE
+ },
};
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