Module: kamailio Branch: master Commit: 744e5ac9678c0c9ef07bfb0de44c7c478a2debdc URL: https://github.com/kamailio/kamailio/commit/744e5ac9678c0c9ef07bfb0de44c7c4… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: 2024-09-04T19:36:34+02:00 nathelper: add_contact_alias() with parameters to enclose ipv6 in square brackets - the add_contact_alias() without parameters was doing it already - discovered while investigating GH #3968 --- Modified: src/modules/nathelper/nathelper.c --- Diff: https://github.com/kamailio/kamailio/commit/744e5ac9678c0c9ef07bfb0de44c7c4… Patch: https://github.com/kamailio/kamailio/commit/744e5ac9678c0c9ef07bfb0de44c7c4… --- diff --git a/src/modules/nathelper/nathelper.c b/src/modules/nathelper/nathelper.c index 1188dbeb04b..bf4b3b21893 100644 --- a/src/modules/nathelper/nathelper.c +++ b/src/modules/nathelper/nathelper.c @@ -998,6 +998,8 @@ static int add_contact_alias_3( struct lump *anchor; struct sip_uri uri; char *bracket, *lt, *param, *at, *start; + int is_ipv6 = 0; + int i; /* Do nothing if Contact header does not exist */ if(!msg->contact) { @@ -1058,8 +1060,8 @@ static int add_contact_alias_3( } /* Create ;alias param */ - param_len = _ksr_contact_salias.len + IP6_MAX_STR_SIZE - + 1 /* ~ */ + 5 /* port */ + param_len = _ksr_contact_salias.len + 1 /* [ */ + IP6_MAX_STR_SIZE + + 1 /* ] */ + 1 /* ~ */ + 5 /* port */ + 1 /* ~ */ + 1 /* proto */ + 1 /* closing > */; param = (char *)pkg_malloc(param_len); if(!param) { @@ -1068,8 +1070,20 @@ static int add_contact_alias_3( } at = param; /* ip address */ + for(i = 0; i < ip_str->len; i++) { + if(ip_str->s[i] == ':') { + is_ipv6 = 1; + break; + } + } + if(is_ipv6 && ip_str->s[0] != '[') { + append_chr(at, '['); + } append_str(at, _ksr_contact_salias.s, _ksr_contact_salias.len); append_str(at, ip_str->s, ip_str->len); + if(is_ipv6 && ip_str->s[0] != '[') { + append_chr(at, ']'); + } /* port */ append_chr(at, '~'); append_str(at, port_str->s, port_str->len);