Module: sip-router Branch: master Commit: b2fb355fe5c9c64727d873cbe8d6fd883ebd2537 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=b2fb355… Author: Peter Dunkley &lt;peter.dunkley(a)crocodile-rcs.com&gt; Committer: Peter Dunkley &lt;peter.dunkley(a)crocodile-rcs.com&gt; Date: Wed Mar 27 16:32:59 2013 +0000 modules/outbound: improved check for outbound --- modules/outbound/ob_mod.c | 139 ++++++++++++++++++++++++++++++++------------ 1 files changed, 101 insertions(+), 38 deletions(-) diff --git a/modules/outbound/ob_mod.c b/modules/outbound/ob_mod.c index fb110d8..a58fdff 100644 --- a/modules/outbound/ob_mod.c +++ b/modules/outbound/ob_mod.c @@ -206,7 +206,7 @@ int decode_flow_token(struct receive_info *rcv, str flow_token) if (flow_token.s == NULL) { - LM_INFO("no flow-token provided\n"); + LM_DBG("no flow-token provided\n"); return -2; } @@ -275,29 +275,10 @@ int decode_flow_token(struct receive_info *rcv, str flow_token) return 0; } -int use_outbound(struct sip_msg *msg) +static int use_outbound_register(struct sip_msg *msg) { contact_t *contact; - rr_t *rt; - struct sip_uri puri; - param_hooks_t hooks; - param_t *params; - int ret; - - /* If Outbound is forced return success without any further checks */ - if (ob_force_flag != -1 && isflagset(msg, ob_force_flag) > 0) - { - LM_INFO("outbound forced\n"); - return 1; - } - - /* Use Outbound when there is a single Via: header and: - # It's a REGISTER request with a Contact-URI containing a ;reg-id - parameter, or - # The Contact-URI has an ;ob parameter, or - # The top Route-URI points to use and has an ;ob parameter - */ - + /* Check there is a single Via: */ if (!(parse_headers(msg, HDR_VIA2_F, 0) == -1 || msg->via2 == 0 || msg->via2->error != PARSE_OK)) @@ -306,8 +287,7 @@ int use_outbound(struct sip_msg *msg) return 0; } - /* Look for ;reg-id in REGISTER Contact-URIs and ;ob in any - Contact-URIs */ + /* Look for ;reg-id in Contact-URIs */ if (msg->contact || (parse_headers(msg, HDR_CONTACT_F, 0) != -1 && msg->contact)) { @@ -323,21 +303,29 @@ int use_outbound(struct sip_msg *msg) return 0; } - if (msg->REQ_METHOD == METHOD_REGISTER && contact->reg_id) + if (contact->reg_id) { LM_INFO("found REGISTER with ;reg-id paramter on" " Contact-URI - outbound used\n"); return 1; } - if (hooks.contact.ob) - { - LM_INFO("found ;ob parameter on Contact-URI - outbound" - " used\n"); - return 1; - } } + LM_INFO("outbound not used\n"); + return 0; +} + +static int use_outbound_non_reg(struct sip_msg *msg) +{ + contact_t *contact; + rr_t *rt; + struct sip_uri puri; + param_hooks_t hooks; + param_t *params; + int ret; + struct receive_info rcv; + /* Check to see if the top Route-URI is me and has a ;ob parameter */ if (msg->route || (parse_headers(msg, HDR_ROUTE_F, 0) != -1 && msg->route)) @@ -359,13 +347,6 @@ int use_outbound(struct sip_msg *msg) LM_ERR("parsing Route-URI\n"); return 0; } - if (parse_params(&puri.params, CLASS_URI, &hooks, - &params) != 0) - { - LM_ERR("parsing Route-URI parameters\n"); - return 0; - } - ret = check_self(&puri.host, puri.port_no ? puri.port_no : SIP_PORT, 0); if (ret < 1 || (ret == 1 && puri.gr.s != NULL)) @@ -377,10 +358,65 @@ int use_outbound(struct sip_msg *msg) return 0; } + if (parse_params(&puri.params, CLASS_URI, &hooks, + &params) != 0) + { + LM_ERR("parsing Route-URI parameters\n"); + return 0; + } + if (hooks.uri.ob) { LM_INFO("found ;ob parameter on Route-URI - outbound" " used\n"); + + if (decode_flow_token(&rcv, puri.user) == 0) + { + if (!ip_addr_cmp(&rcv.src_ip, &msg->rcv.src_ip) + || rcv.src_port != msg->rcv.src_port) + { + LM_INFO("\"incoming\" request found\n"); + return 2; + } + } + + LM_INFO("\"outgoing\" request found\n"); + return 1; + } + } + + /* Look for ;ob in Contact-URIs */ + if (msg->contact + || (parse_headers(msg, HDR_CONTACT_F, 0) != -1 && msg->contact)) + { + if (parse_contact(msg->contact) < 0) + { + LM_ERR("parsing Contact: header body\n"); + return 0; + } + contact = ((contact_body_t *) msg->contact->parsed)->contacts; + if (!contact) + { + LM_ERR("empty Contact:\n"); + return 0; + } + + if (parse_uri(contact->uri.s, contact->uri.len, &puri) + < 0) + { + LM_ERR("parsing Contact-URI\n"); + return 0; + } + if (parse_params(&puri.params, CLASS_CONTACT, &hooks, &params) + != 0) + { + LM_ERR("parsing Contact-URI parameters\n"); + return 0; + } + if (hooks.contact.ob) + { + LM_INFO("found ;ob parameter on Contact-URI - outbound" + " used\n"); return 1; } } @@ -389,6 +425,33 @@ int use_outbound(struct sip_msg *msg) return 0; } +int use_outbound(struct sip_msg *msg) +{ + if (msg->first_line.type != SIP_REQUEST) + { + LM_ERR("use_outbound called for something that isn't a SIP" + " request\n"); + return 0; + } + + /* If Outbound is forced return success without any further checks */ + if (ob_force_flag != -1 && isflagset(msg, ob_force_flag) > 0) + { + LM_DBG("outbound forced\n"); + return 1; + } + + LM_INFO("Analysing %.*s for outbound markers\n", + msg->first_line.u.request.method.len, + msg->first_line.u.request.method.s); + + if (msg->REQ_METHOD == METHOD_REGISTER) + return use_outbound_register(msg); + else + return use_outbound_non_reg(msg); + +} + int bind_ob(struct ob_binds *pxb) { if (pxb == NULL)