PJSIP: Add Path header support

This adds Path support to chan_pjsip in res_pjsip_path.c with minimal
additions in res_pjsip_registrar.c to store the path and additions in
res_pjsip_outbound_registration.c to enable advertisement of path
support to registrars and intervening proxies.

Path information is stored on contacts and is enabled via Address of
Record (AoRs) and Registration configuration sections.

While adding path support, it became necessary to be able to add SIP
supplements that handled messages outside of sessions, so a framework
for handling these types of hooks was added in parallel to the
already-existing session supplements and several senders of
out-of-dialog requests were refactored as a result.

(closes issue ASTERISK-21084)
Review: https://reviewboard.asterisk.org/r/3050/
........

Merged revisions 405565 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@405566 65c4cc65-6c06-0410-ace0-fbb531ad65f3

1 files changed, 6 insertions, 1 deletions

diff --git a/res/res_pjsip/location.c b/res/res_pjsip/location.c
index 31eaeeee4..499ee9a6c 100644
--- a/res/res_pjsip/location.c
+++ b/res/res_pjsip/location.c
@@ -178,7 +178,7 @@ struct ast_sip_contact *ast_sip_location_retrieve_contact(const char *contact_na
 	return ast_sorcery_retrieve_by_id(ast_sip_get_sorcery(), "contact", contact_name);
 }
 
-int ast_sip_location_add_contact(struct ast_sip_aor *aor, const char *uri, struct timeval expiration_time)
+int ast_sip_location_add_contact(struct ast_sip_aor *aor, const char *uri, struct timeval expiration_time, const char *path_info)
 {
 	char name[AST_UUID_STR_LEN];
 	RAII_VAR(struct ast_sip_contact *, contact, NULL, ao2_cleanup);
@@ -193,6 +193,9 @@ int ast_sip_location_add_contact(struct ast_sip_aor *aor, const char *uri, struc
 	contact->expiration_time = expiration_time;
 	contact->qualify_frequency = aor->qualify_frequency;
 	contact->authenticate_qualify = aor->authenticate_qualify;
+	if (path_info && aor->support_path) {
+		ast_string_field_set(contact, path, path_info);
+	}
 
 	if (!ast_strlen_zero(aor->outbound_proxy)) {
 		ast_string_field_set(contact, outbound_proxy, aor->outbound_proxy);
@@ -610,6 +613,7 @@ int ast_sip_initialize_sorcery_location(struct ast_sorcery *sorcery)
 
 	ast_sorcery_object_field_register(sorcery, "contact", "type", "", OPT_NOOP_T, 0, 0);
 	ast_sorcery_object_field_register(sorcery, "contact", "uri", "", OPT_STRINGFIELD_T, 0, STRFLDSET(struct ast_sip_contact, uri));
+	ast_sorcery_object_field_register(sorcery, "contact", "path", "", OPT_STRINGFIELD_T, 0, STRFLDSET(struct ast_sip_contact, path));
 	ast_sorcery_object_field_register_custom(sorcery, "contact", "expiration_time", "", expiration_str2struct, expiration_struct2str, 0, 0);
 	ast_sorcery_object_field_register(sorcery, "contact", "qualify_frequency", 0, OPT_UINT_T,
 					  PARSE_IN_RANGE, FLDSET(struct ast_sip_contact, qualify_frequency), 0, 86400);
@@ -626,6 +630,7 @@ int ast_sip_initialize_sorcery_location(struct ast_sorcery *sorcery)
 	ast_sorcery_object_field_register_custom(sorcery, "aor", "contact", "", permanent_uri_handler, NULL, 0, 0);
 	ast_sorcery_object_field_register(sorcery, "aor", "mailboxes", "", OPT_STRINGFIELD_T, 0, STRFLDSET(struct ast_sip_aor, mailboxes));
 	ast_sorcery_object_field_register(sorcery, "aor", "outbound_proxy", "", OPT_STRINGFIELD_T, 0, STRFLDSET(struct ast_sip_aor, outbound_proxy));
+	ast_sorcery_object_field_register(sorcery, "aor", "support_path", "no", OPT_BOOL_T, 1, FLDSET(struct ast_sip_aor, support_path));
 
 	ast_sip_register_endpoint_formatter(&endpoint_aor_formatter);
 	ast_sip_register_cli_formatter(&cli_contact_formatter);