From c0ae25bbc58b68d726207b9056e0e30f7b90f897 Mon Sep 17 00:00:00 2001
From: Alexandre Savard <alexandresavard@alexandresavard-desktop.(none)>
Date: Wed, 6 Jan 2010 12:59:09 -0500
Subject: [PATCH] [#2522] Add basic SRTP attribute in sdp
---
sflphone-common/src/sip/sdp.cpp | 33 +++++++++++++++++++++++++++++++++
sflphone-common/src/sip/sdp.h | 8 ++++++++
2 files changed, 41 insertions(+)
diff --git a/sflphone-common/src/sip/sdp.cpp b/sflphone-common/src/sip/sdp.cpp
index c9cf1b6e97..66abc5ca75 100644
--- a/sflphone-common/src/sip/sdp.cpp
+++ b/sflphone-common/src/sip/sdp.cpp
@@ -130,6 +130,8 @@ void Sdp::set_media_descriptor_line (sdpMedia *media, pjmedia_sdp_media** p_med)
_debug ("No hash specified");
}
+ // sdp_add_srtp_attribute (med);
+
*p_med = med;
}
@@ -360,6 +362,37 @@ void Sdp::sdp_add_media_description()
}
}
+
+void Sdp::sdp_add_srtp_attribute (pjmedia_sdp_media* media)
+{
+
+ char tempbuf[256];
+
+ std::string crypto_suite = "AES_CM_128_HMAC_SHA1_32";
+ std::string application = "srtp";
+ std::string key = "inline:16/14/NzB4d1BINUAvLEw6UzF3WSJ+PSdFcGdUJShpX1Zj/2^20/1:32";
+
+ pjmedia_sdp_attr *attribute = (pjmedia_sdp_attr*) pj_pool_zalloc(_pool, sizeof(pjmedia_sdp_attr));
+
+ attribute->name = pj_strdup3(_pool, "crypto");
+
+ int len = pj_ansi_snprintf(tempbuf, sizeof(tempbuf),
+ "%.*s %.*s %.*s",
+ (int)crypto_suite.size(), crypto_suite.c_str(),
+ (int)application.size(), application.c_str(),
+ (int)key.size(), key.c_str());
+
+ attribute->value.slen = len;
+ attribute->value.ptr = (char*) pj_pool_alloc (_pool, attribute->value.slen+1);
+ pj_memcpy (attribute->value.ptr, tempbuf, attribute->value.slen+1);
+
+ if(pjmedia_sdp_media_add_attr(media, attribute) != PJ_SUCCESS) {
+ throw sdpException();
+ }
+
+}
+
+
void Sdp::sdp_add_zrtp_attribute (pjmedia_sdp_media* media, std::string hash)
{
pjmedia_sdp_attr *attribute;
diff --git a/sflphone-common/src/sip/sdp.h b/sflphone-common/src/sip/sdp.h
index 9500fa3185..a2af3cd247 100644
--- a/sflphone-common/src/sip/sdp.h
+++ b/sflphone-common/src/sip/sdp.h
@@ -336,6 +336,14 @@ class Sdp {
void get_remote_sdp_media_from_offer (const pjmedia_sdp_session* r_sdp, pjmedia_sdp_media** r_media);
+
+ /*
+ * Adds a srtp attribute to the given media section.
+ *
+ * @param media The media to add the srtp attribute to
+ */
+ void sdp_add_srtp_attribute(pjmedia_sdp_media* media);
+
/*
* Adds a zrtp-hash attribute to
* the given media section. The hello hash is
--
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