From 2448f16d92d0cb768eda7d0da98cd249ef411009 Mon Sep 17 00:00:00 2001
From: Simon Morlat <simon.morlat@linphone.org>
Date: Mon, 15 Oct 2012 23:40:51 +0200
Subject: [PATCH] add linphonerc option to put dates in REGISTER messages

---
 coreapi/linphonecore.c |  1 +
 coreapi/sal.h          |  1 +
 coreapi/sal_eXosip2.c  | 28 +++++++++++++++++++++++++++-
 coreapi/sal_eXosip2.h  |  1 +
 4 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index db7a8ea7c..6ae5563ae 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -620,6 +620,7 @@ static void sip_config_read(LinphoneCore *lc)
 	sal_use_one_matching_codec_policy(lc->sal,lp_config_get_int(lc->config,"sip","only_one_codec",0));
 	sal_use_double_registrations(lc->sal,lp_config_get_int(lc->config,"sip","use_double_registrations",1));
 	sal_set_dscp(lc->sal,linphone_core_get_sip_dscp(lc));
+	sal_use_dates(lc->sal,lp_config_get_int(lc->config,"sip","put_date",0));
 }
 
 static void rtp_config_read(LinphoneCore *lc)
diff --git a/coreapi/sal.h b/coreapi/sal.h
index 1bce846c6..2913096ca 100644
--- a/coreapi/sal.h
+++ b/coreapi/sal.h
@@ -340,6 +340,7 @@ unsigned int sal_get_keepalive_period(Sal *ctx);
 void sal_use_session_timers(Sal *ctx, int expires);
 void sal_use_double_registrations(Sal *ctx, bool_t enabled);
 void sal_expire_old_registration_contacts(Sal *ctx, bool_t enabled);
+void sal_use_dates(Sal *ctx, bool_t enabled);
 void sal_reuse_authorization(Sal *ctx, bool_t enabled);
 void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec);
 void sal_use_rport(Sal *ctx, bool_t use_rports);
diff --git a/coreapi/sal_eXosip2.c b/coreapi/sal_eXosip2.c
index 4b5c20539..1b5f5a2b7 100644
--- a/coreapi/sal_eXosip2.c
+++ b/coreapi/sal_eXosip2.c
@@ -283,6 +283,7 @@ Sal * sal_init(){
 	sal->rootCa = 0;
 	sal->verify_server_certs=TRUE;
 	sal->expire_old_contact=FALSE;
+	sal->add_dates=FALSE;
 	sal->dscp=-1;
 	return sal;
 }
@@ -460,6 +461,10 @@ void sal_expire_old_registration_contacts(Sal *ctx, bool_t enabled){
 	ctx->expire_old_contact=enabled;
 }
 
+void sal_use_dates(Sal *ctx, bool_t enabled){
+	ctx->add_dates=enabled;
+}
+
 void sal_use_rport(Sal *ctx, bool_t use_rports){
 	ctx->use_rports=use_rports;
 }
@@ -2215,6 +2220,25 @@ static void sal_register_add_route(osip_message_t *msg, const char *proxy){
 	osip_message_set_route(msg,tmp);
 }
 
+static const char *days[]={"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
+static const char *months[]={"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
+
+static void sal_register_set_date(osip_message_t *msg){
+	char tmp[256]={0};
+	time_t curtime=time(NULL);
+	struct tm *ret;
+#ifndef WIN32
+	struct tm gmt;
+	ret=gmtime_r(&curtime,&gmt);
+#else
+	ret=gmtime(&curtime);
+#endif
+	/*cannot use strftime because it is locale dependant*/
+	snprintf(tmp,sizeof(tmp)-1,"%s, %i %s %i %02i:%02i:%02i GMT",
+		 days[ret->tm_wday],ret->tm_mday,months[ret->tm_mon],1900+ret->tm_year,ret->tm_hour,ret->tm_min,ret->tm_sec);
+	osip_message_replace_header(msg,"Date",tmp);
+}
+
 int sal_register(SalOp *h, const char *proxy, const char *from, int expires){
 	osip_message_t *msg;
 	const char *contact=sal_op_get_contact(h);
@@ -2255,8 +2279,10 @@ int sal_register(SalOp *h, const char *proxy, const char *from, int expires){
 		eXosip_register_build_register(h->rid,expires,&msg);
 		sal_register_add_route(msg,proxy);
 	}
-	if (msg)
+	if (msg){
+		if (h->base.root->add_dates) sal_register_set_date(msg);
 		eXosip_register_send_register(h->rid,msg);
+	}
 	eXosip_unlock();
 	h->expires=expires;
 	return (msg != NULL) ? 0 : -1;
diff --git a/coreapi/sal_eXosip2.h b/coreapi/sal_eXosip2.h
index 71463854c..29eee78ae 100644
--- a/coreapi/sal_eXosip2.h
+++ b/coreapi/sal_eXosip2.h
@@ -49,6 +49,7 @@ struct Sal{
 	bool_t reuse_authorization;
 	bool_t verify_server_certs;
 	bool_t expire_old_contact;
+	bool_t add_dates;
 };
 
 struct SalOp{