Module: kamailio Branch: master Commit: cc0b07d2bcadbd95b2f0dbfdcc873306acca8f2d URL: https://github.com/kamailio/kamailio/commit/cc0b07d2bcadbd95b2f0dbfdcc873306...

Author: AndreasHuber-CH andreas.huber@nagra.com Committer: AndreasHuber-CH andreas.huber@nagra.com Date: 2016-07-26T08:41:20+02:00

registrar: Add warnings if contact is invalid and REGISTER will be rejected

Added some warnings in case a REGISTER is rejected because of an invalid contact header field. Before, kamailio might answer a 400 Bad Request for a too long contact URI for example without logging any message.

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Modified: modules/registrar/sip_msg.c

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Diff: https://github.com/kamailio/kamailio/commit/cc0b07d2bcadbd95b2f0dbfdcc873306... Patch: https://github.com/kamailio/kamailio/commit/cc0b07d2bcadbd95b2f0dbfdcc873306...

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diff --git a/modules/registrar/sip_msg.c b/modules/registrar/sip_msg.c index 36c4682..8856ce4 100644 --- a/modules/registrar/sip_msg.c +++ b/modules/registrar/sip_msg.c @@ -154,12 +154,14 @@ int check_contacts(struct sip_msg* _m, int* _s) /* The first Contact HF is star */ /* Expires must be zero */ if (get_expires_hf(_m) != 0) { + LM_WARN("expires must be 0 for star contact\n"); rerrno = R_STAR_EXP; return 1; }

/* Message must contain no contacts */ if (((contact_body_t*)_m->contact->parsed)->contacts) { + LM_WARN("star contact cannot be mixed with other contacts\n"); rerrno = R_STAR_CONT; return 1; } @@ -168,6 +170,7 @@ int check_contacts(struct sip_msg* _m, int* _s) p = _m->contact->next; while(p) { if (p->type == HDR_CONTACT_T) { + LM_WARN("star contact cannot be mixed with other contacts\n"); rerrno = R_STAR_CONT; return 1; } @@ -181,13 +184,19 @@ int check_contacts(struct sip_msg* _m, int* _s) while(p) { if (p->type == HDR_CONTACT_T) { if (((contact_body_t*)p->parsed)->star == 1) { + LM_WARN("star contact cannot be mixed with other contacts\n"); rerrno = R_STAR_CONT; return 1; } - /* check also the lenght of all contacts */ + /* check also the length of all contacts */ for(c=((contact_body_t*)p->parsed)->contacts ; c ; c=c->next) { - if (c->uri.len > CONTACT_MAX_SIZE - || (c->received && c->received->len>RECEIVED_MAX_SIZE) ) { + if (c->uri.len > CONTACT_MAX_SIZE) { + LM_WARN("contact uri is too long: [%.*s]\n", c->uri.len, c->uri.s); + rerrno = R_CONTACT_LEN; + return 1; + } + if (c->received && c->received->len>RECEIVED_MAX_SIZE) { + LM_WARN("received attribute of contact is too long\n"); rerrno = R_CONTACT_LEN; return 1; }