[sr-dev] git:sr_3.0: registrar: Fix handling of cases where contacts > max_contacts

Module: sip-router Branch: sr_3.0 Commit: 1bf989c36a9972389c033b87df0e88c04e56b9c3 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=1bf989c… Author: Jan Janak &lt;jan(a)ryngle.com&gt; Committer: Jan Janak &lt;jan(a)ryngle.com&gt; Date: Mon Oct 26 16:25:02 2009 +0100 registrar: Fix handling of cases where contacts > max_contacts Registrar should not report an error to syslog if a user exceeds the maximum number of allowed contacts per user. The registrar module sends a reply back with a description of what happened so there is no reason to write this to syslog, max_contacts > 0 is a configuration choice rather than an error. This patch also changes all affected functions in registrar module to indicate that the maximum number of allowed contacts was exceeded by returning a positive number, instead of a negative number to indicate that an error occurred. --- modules_s/registrar/save.c | 38 +++++++++++++++++++++----------------- 1 files changed, 21 insertions(+), 17 deletions(-) diff --git a/modules_s/registrar/save.c b/modules_s/registrar/save.c index 27d134c..fee4548 100644 --- a/modules_s/registrar/save.c +++ b/modules_s/registrar/save.c @@ -257,10 +257,11 @@ static int create_rcv_uri(str** uri, struct sip_msg* m) /* - * Message contained some contacts, but record with same address - * of record was not found so we have to create a new record - * and insert all contacts from the message that have expires - * > 0 + * Message contained some contacts, but record with same address of record was + * not found so we have to create a new record and insert all contacts from + * the message that have expires > 0. The function returns a negative number + * on error, a positive number if the number of contacts would exceed + * max_contacts and 0 on success. */ static inline int insert(struct sip_msg* _m, str* aor, contact_t* _c, udomain_t* _d, str* _u, str *ua, str* aor_filter, int sid) { @@ -289,7 +290,7 @@ static inline int insert(struct sip_msg* _m, str* aor, contact_t* _c, udomain_t* if (max_contacts && (num >= max_contacts)) { rerrno = R_TOO_MANY; ul.delete_urecord(_d, _u); - return -1; + return 1; } num++; @@ -394,7 +395,7 @@ static int test_max_contacts(struct sip_msg* _m, urecord_t* _r, contact_t* _c) _c = get_next_contact(_c); } - DBG("test_max_contacts: %d contacts after commit\n", num); + DBG("test_max_contacts: %d contacts after commit, max_contacts=%d\n", num, max_contacts); if (num > max_contacts) { rerrno = R_TOO_MANY; return 1; @@ -414,6 +415,11 @@ static int test_max_contacts(struct sip_msg* _m, urecord_t* _r, contact_t* _c) * > 0, update the contact * 3) If contact in usrloc exists and expires * == 0, delete contact + * + * The function returns a negative number on error, a positive number if + * max_contacts is set and the number of contacts after the change would + * exceed that maximum number of allowed contacts. On success the function + * returns 0. */ static inline int update(struct sip_msg* _m, urecord_t* _r, str* aor, contact_t* _c, str* _ua, str* aor_filter, int sid) { @@ -434,8 +440,12 @@ static inline int update(struct sip_msg* _m, urecord_t* _r, str* aor, contact_t* if (max_contacts) { ret = test_max_contacts(_m, _r, _c); if (ret != 0) { + /* test_max_contacts returns a negative number on error and a + * positive number if the number of contacts after the update + * exceeds the configured max_contacts. In both cases we return + * here. */ build_contact(_r->contacts, aor_filter); - return -1; + return ret; } } @@ -607,24 +617,18 @@ static inline int contacts(struct sip_msg* _m, contact_t* _c, udomain_t* _d, str } if (res == 0) { /* Contacts found */ - if (update(_m, r, aor, _c, _ua, aor_filter, sid) < 0) { + if ((res = update(_m, r, aor, _c, _ua, aor_filter, sid) < 0)) { LOG(L_ERR, "contacts(): Error while updating record\n"); - build_contact(r->contacts, aor_filter); - ul.release_urecord(r); - ul.unlock_udomain(_d); - return -3; } build_contact(r->contacts, aor_filter); ul.release_urecord(r); } else { - if (insert(_m, aor, _c, _d, _u, _ua, aor_filter, sid) < 0) { + if ((res = insert(_m, aor, _c, _d, _u, _ua, aor_filter, sid) < 0)) { LOG(L_ERR, "contacts(): Error while inserting record\n"); - ul.unlock_udomain(_d); - return -4; } } ul.unlock_udomain(_d); - return 0; + return res; } #define UA_DUMMY_STR "Unknown" @@ -684,7 +688,7 @@ static inline int save_real(struct sip_msg* _m, udomain_t* _t, char* aor_filt, i if (no_contacts(_t, &uid, &aor_filter) < 0) goto error; } } else { - if (contacts(_m, c, _t, &uid, &ua, &aor_filter) < 0) goto error; + if (contacts(_m, c, _t, &uid, &ua, &aor_filter) != 0) goto error; } if (doreply) {