Module: kamailio
Branch: master
Commit: a8162b513443fd688ab66e470748cc948c811a6a
URL: 
https://github.com/kamailio/kamailio/commit/a8162b513443fd688ab66e470748cc948c811a6a

Author: Daniel-Constantin Mierla <mico...@gmail.com>
Committer: Daniel-Constantin Mierla <mico...@gmail.com>
Date: 2024-08-27T12:38:25+02:00

core: relocated function for stateless forwarding uac style

---

Modified: src/core/forward.c
Modified: src/core/forward.h

---

Diff:  
https://github.com/kamailio/kamailio/commit/a8162b513443fd688ab66e470748cc948c811a6a.diff
Patch: 
https://github.com/kamailio/kamailio/commit/a8162b513443fd688ab66e470748cc948c811a6a.patch

---

diff --git a/src/core/forward.c b/src/core/forward.c
index 1d2b1d5d650..3d2e743cdbd 100644
--- a/src/core/forward.c
+++ b/src/core/forward.c
@@ -40,6 +40,7 @@
 #include "hash_func.h"
 #include "config.h"
 #include "parser/msg_parser.h"
+#include "parser/parse_uri.h"
 #include "char_msg_val.h"
 #include "route.h"
 #include "events.h"
@@ -694,6 +695,70 @@ int forward_request(struct sip_msg *msg, str *dst, 
unsigned short port,
 }
 
 
+/**
+ * forward request like initial uac sender, with only one via
+ */
+int forward_uac_uri(sip_msg_t *msg, str *vuri)
+{
+       int ret;
+       dest_info_t dst;
+       sip_uri_t *u;
+       sip_uri_t next_hop;
+       sr_lump_t *anchor;
+       hdr_field_t *hf;
+       msg_flags_t msg_flags_bk;
+
+       if(msg == NULL) {
+               LM_WARN("invalid msg parameter\n");
+               return -1;
+       }
+
+       if(parse_headers(msg, HDR_EOH_F, 0) == -1) {
+               LM_ERR("error while parsing message\n");
+               return -1;
+       }
+       /* remove incoming Via headers */
+       for(hf = msg->headers; hf; hf = hf->next) {
+               if(hf->type != HDR_VIA_T) {
+                       continue;
+               }
+               anchor = del_lump(msg, hf->name.s - msg->buf, hf->len, 0);
+               if(anchor == 0) {
+                       LM_ERR("cannot remove Via header\n");
+                       return -1;
+               }
+       }
+
+       init_dest_info(&dst);
+       if(vuri == NULL || vuri->s == NULL || vuri->len <= 0) {
+               if(msg->dst_uri.len) {
+                       ret = parse_uri(msg->dst_uri.s, msg->dst_uri.len, 
&next_hop);
+                       u = &next_hop;
+               } else {
+                       ret = parse_sip_msg_uri(msg);
+                       u = &msg->parsed_uri;
+               }
+       } else {
+               ret = parse_uri(vuri->s, vuri->len, &next_hop);
+               u = &next_hop;
+       }
+       if(ret < 0) {
+               LM_ERR("forward - bad uri dropping packet\n");
+               return -1;
+       }
+       dst.proto = u->proto;
+       msg_flags_bk = msg->msg_flags;
+       msg->msg_flags |= FL_VIA_NORECEIVED;
+       ret = forward_request_mode(
+                       msg, &u->host, u->port_no, &dst, BUILD_NO_VIA1_UPDATE);
+       msg->msg_flags = msg_flags_bk;
+       if(ret >= 0) {
+               return 1;
+       }
+
+       return -1;
+}
+
 int update_sock_struct_from_via(
                union sockaddr_union *to, struct sip_msg *msg, struct via_body 
*via)
 {
diff --git a/src/core/forward.h b/src/core/forward.h
index a90ce3446ce..5b414a7a64b 100644
--- a/src/core/forward.h
+++ b/src/core/forward.h
@@ -82,6 +82,7 @@ int forward_request(struct sip_msg *msg, str *dst, unsigned 
short port,
                struct dest_info *send_info);
 int forward_request_mode(struct sip_msg *msg, str *dst, unsigned short port,
                struct dest_info *send_info, unsigned int mbmode);
+int forward_uac_uri(sip_msg_t *msg, str *vuri);
 int update_sock_struct_from_via(
                union sockaddr_union *to, struct sip_msg *msg, struct via_body 
*via);
 

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