/
save.c
1093 lines (940 loc) · 27.9 KB
/
save.c
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/*
* Process REGISTER request and send reply
*
* Copyright (C) 2001-2003 FhG Fokus
* Copyright (C) 2006 Voice Sistem SRL
*
* This file is part of opensips, a free SIP server.
*
* opensips is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* opensips is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* History:
* ----------
* 2003-01-27 next baby-step to removing ZT - PRESERVE_ZT (jiri)
* 2003-02-28 scrathcpad compatibility abandoned (jiri)
* 2003-03-21 save_noreply added, patch provided by Maxim Sobolev
* <sobomax@portaone.com> (janakj)
* 2005-07-11 added sip_natping_flag for nat pinging with SIP method
* instead of UDP package (bogdan)
* 2006-04-13 added tcp_persistent_flag for keeping the TCP connection as long
* as a TCP contact is registered (bogdan)
* 2006-11-22 save_noreply and save_memory merged into save() (bogdan)
* 2006-11-28 Added statistic support for the number of accepted/rejected
* registrations. (Jeffrey Magder - SOMA Networks)
* 2007-02-24 sip_natping_flag moved into branch flags, so migrated to
* nathelper module (bogdan)
*/
/*!
* \file
* \brief SIP registrar module - Process REGISTER request and send reply
* \ingroup registrar
*/
#include "../../str.h"
#include "../../socket_info.h"
#include "../../parser/parse_allow.h"
#include "../../parser/parse_methods.h"
#include "../../parser/msg_parser.h"
#include "../../parser/parse_uri.h"
#include "../../parser/parse_expires.h"
#include "../../parser/parse_supported.h"
#include "../../dprint.h"
#include "../../trim.h"
#include "../../ut.h"
#include "../../qvalue.h"
#include "../../dset.h"
#include "../../mod_fix.h"
#include "../../data_lump.h"
#include "../../lib/reg/common.h"
#include "../usrloc/usrloc.h"
#include "sip_msg.h"
#include "reply.h"
#include "reg_mod.h"
#include "save.h"
#include "lookup.h"
int filter_contacts(urecord_t *r, struct sip_msg *by_msg);
void restore_contacts(urecord_t *r);
/*! \brief
* Process request that contained a star, in that case,
* we will remove all bindings with the given username
* from the usrloc and return 200 OK response
*/
static inline int star(udomain_t* _d, struct save_ctx *_sctx,
struct sip_msg *_m)
{
urecord_t* r;
ucontact_t* c;
ul.lock_udomain(_d, &_sctx->aor);
if (!ul.get_urecord(_d, &_sctx->aor, &r)) {
c = r->contacts;
while(c) {
if (_sctx->flags®_SAVE_MEMORY_FLAG) {
c->flags |= FL_MEM;
} else {
c->flags &= ~FL_MEM;
}
c = c->next;
}
}
if (ul.delete_urecord(_d, &_sctx->aor, NULL, 0) < 0) {
LM_ERR("failed to remove record from usrloc\n");
/* Delete failed, try to get corresponding
* record structure and send back all existing
* contacts
*/
rerrno = R_UL_DEL_R;
if (!ul.get_urecord(_d, &_sctx->aor, &r)) {
build_contact(r->contacts,_m);
}
ul.unlock_udomain(_d, &_sctx->aor);
return -1;
}
ul.unlock_udomain(_d, &_sctx->aor);
return 0;
}
/*! \brief
* Process request that contained no contact header
* field, it means that we have to send back a response
* containing a list of all existing bindings for the
* given username (in To HF)
*/
static inline int no_contacts(udomain_t* _d, struct save_ctx *_sctx,
struct sip_msg *_m)
{
urecord_t* r;
int res;
ul.lock_udomain(_d, &_sctx->aor);
res = ul.get_urecord(_d, &_sctx->aor, &r);
if (res < 0) {
rerrno = R_UL_GET_R;
LM_ERR("failed to retrieve record from usrloc\n");
ul.unlock_udomain(_d, &_sctx->aor);
return -1;
}
if (res == 0) { /* Contacts found */
if (_sctx->flags & REG_SAVE_REQ_CT_ONLY_FLAG)
filter_contacts(r, _m);
build_contact(r->contacts,_m);
if (_sctx->flags & REG_SAVE_REQ_CT_ONLY_FLAG)
restore_contacts(r);
}
ul.unlock_udomain(_d, &_sctx->aor);
return 0;
}
/*! \brief
*/
static int set_sock_hdr(struct sip_msg *msg, ucontact_info_t *ci,
unsigned int reg_flags)
{
struct socket_info *sock;
struct hdr_field *hf;
str socks;
str hosts;
int port;
int proto;
if (!msg || !(reg_flags & REG_SAVE_SOCKET_FLAG))
return 1;
if (parse_headers( msg, HDR_EOH_F, 0) == -1) {
LM_ERR("failed to parse message\n");
return 1;
}
hf = get_header_by_name( msg, sock_hdr_name.s, sock_hdr_name.len);
if (hf==0)
return 1;
trim_len( socks.len, socks.s, hf->body );
if (socks.len==0)
return 1;
if (parse_phostport( socks.s, socks.len, &hosts.s, &hosts.len,
&port, &proto)!=0) {
LM_ERR("bad socket <%.*s> in \n",
socks.len, socks.s);
return 1;
}
set_sip_defaults( port, proto);
sock = grep_sock_info(&hosts,(unsigned short)port,(unsigned short)proto);
if (sock==0) {
LM_ERR("non-local socket <%.*s>\n", socks.len, socks.s);
return 1;
}
LM_DBG("%d:<%.*s>:%d -> p=%p\n", proto,socks.len,socks.s,port,sock );
ci->sock = sock;
return 0;
}
/*! \brief
* 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
*/
static inline int insert_contacts(struct sip_msg* _m, contact_t* _c,
udomain_t* _d, str* _a, struct save_ctx *_sctx)
{
ucontact_info_t* ci;
urecord_t* r;
ucontact_t* c;
unsigned int cflags;
int num;
int e;
int e_max;
int tcp_check;
struct sip_uri uri;
cflags = (_sctx->flags®_SAVE_MEMORY_FLAG)?FL_MEM:FL_NONE;
if (is_tcp_based_proto(_m->rcv.proto) && (_m->flags&tcp_persistent_flag)) {
e_max = 0;
tcp_check = 1;
} else {
e_max = tcp_check = 0;
}
for( num=0,r=0,ci=0 ; _c ; _c = get_next_contact(_c) ) {
/* calculate expires */
calc_contact_expires(_m, _c->expires, &e, _sctx);
/* Skip contacts with zero expires */
if (e == 0)
continue;
if (_sctx->max_contacts && (num >= _sctx->max_contacts)) {
if (_sctx->flags®_SAVE_FORCE_REG_FLAG) {
/* we are overflowing the number of maximum contacts,
so remove the first (oldest) one to prevent this */
if (r==NULL || r->contacts==NULL) {
LM_CRIT("BUG - overflow detected with r=%p and "
"contacts=%p\n",r,r->contacts);
rerrno = R_INTERNAL;
goto error;
}
if (ul.delete_ucontact( r, r->contacts, 0)!=0) {
LM_ERR("failed to remove contact\n");
rerrno = R_INTERNAL;
goto error;
}
} else {
LM_INFO("too many contacts (%d) for AOR <%.*s>, max=%d\n",
num, _a->len, _a->s, _sctx->max_contacts);
rerrno = R_TOO_MANY;
goto error;
}
} else {
num++;
}
if (r==0) {
if (ul.insert_urecord(_d, _a, &r, 0) < 0) {
rerrno = R_UL_NEW_R;
LM_ERR("failed to insert new record structure\n");
goto error;
}
}
/* pack the contact_info */
if ( (ci=pack_ci( (ci==0)?_m:0, _c, e, cflags, ul.nat_flag,
_sctx->flags, &_sctx->ownership_tag, &_sctx->cmatch))==0 ) {
LM_ERR("failed to extract contact info\n");
goto error;
}
set_sock_hdr(_m, ci, _sctx->flags);
if ( r->contacts==0 ||
ul.get_ucontact(r, &_c->uri, ci->callid, ci->cseq+1, &_sctx->cmatch,
&c)!=0 ){
if (ul.insert_ucontact( r, &_c->uri, ci, &c, 0) < 0) {
rerrno = R_UL_INS_C;
LM_ERR("failed to insert contact\n");
goto error;
}
} else {
if (ul.update_ucontact( r, c, ci, 0) < 0) {
rerrno = R_UL_UPD_C;
LM_ERR("failed to update contact\n");
goto error;
}
}
if (pn_enable && pn_add_reply_purr(c) != 0)
LM_ERR("failed to add +sip.pnspurr for Contact: '%.*s'\n",
_c->uri.len, _c->uri.s);
if (tcp_check) {
/* parse contact uri to see if transport is TCP */
if (parse_uri( _c->uri.s, _c->uri.len, &uri)<0) {
LM_ERR("failed to parse contact <%.*s>\n",
_c->uri.len, _c->uri.s);
} else if ( is_tcp_based_proto(uri.proto) ) {
if (e_max) {
LM_WARN("multiple TCP contacts on single REGISTER\n");
if (e>e_max) e_max = e;
} else {
e_max = e;
}
}
}
}
if (r) {
if (r->contacts) {
if (_sctx->flags & REG_SAVE_REQ_CT_ONLY_FLAG)
filter_contacts(r, _m);
build_contact(r->contacts,_m);
if (_sctx->flags & REG_SAVE_REQ_CT_ONLY_FLAG)
restore_contacts(r);
}
ul.release_urecord(r, 0);
}
if ( tcp_check && e_max>0 ) {
e_max -= get_act_time();
trans_set_dst_attr( &_m->rcv, DST_FCNTL_SET_LIFETIME,
(void*)(long)(e_max + 10) );
}
return 0;
error:
if (r)
ul.delete_urecord(_d, _a, r, 0);
return -1;
}
/*! \brief
* Message contained some contacts and appropriate
* record was found, so we have to walk through
* all contacts and do the following:
* 1) If contact in usrloc doesn't exists and
* expires > 0, insert new contact
* 2) If contact in usrloc exists and expires
* > 0, update the contact
* 3) If contact in usrloc exists and expires
* == 0, delete contact
*/
static inline int update_contacts(struct sip_msg* _m, urecord_t* _r,
contact_t* _c, struct save_ctx *_sctx)
{
ucontact_info_t *ci;
ucontact_t *c, *c_last, *c_it;
int e;
unsigned int cflags;
int ret;
int num;
int e_max;
int tcp_check;
struct sip_uri uri;
/* mem flag */
cflags = (_sctx->flags®_SAVE_MEMORY_FLAG)?FL_MEM:FL_NONE;
/* pack the contact_info */
if ( (ci=pack_ci( _m, 0, 0, cflags, ul.nat_flag, _sctx->flags,
&_sctx->ownership_tag, &_sctx->cmatch))==0 ) {
LM_ERR("failed to initial pack contact info\n");
goto error;
}
set_sock_hdr(_m, ci, _sctx->flags);
/* count how many contacts we have right now */
num = 0;
if (_sctx->max_contacts) {
c = _r->contacts;
while(c) {
if (VALID_CONTACT(c, get_act_time())) num++;
c = c->next;
}
}
if (is_tcp_based_proto(_m->rcv.proto) && (_m->flags&tcp_persistent_flag)) {
e_max = -1;
tcp_check = 1;
} else {
e_max = tcp_check = 0;
}
for( ; _c ; _c = get_next_contact(_c) ) {
/* calculate expires */
calc_contact_expires(_m, _c->expires, &e, _sctx);
/* search for the contact*/
ret = ul.get_ucontact( _r, &_c->uri, ci->callid, ci->cseq,
&_sctx->cmatch, &c);
if (ret==-1) {
LM_ERR("invalid cseq for aor <%.*s>\n",_r->aor.len,_r->aor.s);
rerrno = R_INV_CSEQ;
goto error;
} else if (ret==-2) {
continue;
}
if ( ret > 0 ) {
/* Contact not found -> expired? */
if (e==0)
continue;
/* we need to add a new contact -> too many ?? */
while (_sctx->max_contacts && num>=_sctx->max_contacts) {
if (_sctx->flags®_SAVE_FORCE_REG_FLAG) {
/* we are overflowing the number of maximum contacts,
so remove the oldest valid one to prevent this */
for( c_it=_r->contacts,c_last=NULL ; c_it ;
c_it=c_it->next )
if (VALID_CONTACT(c_it, get_act_time()))
c_last=c_it;
if (c_last==NULL) {
LM_CRIT("BUG - overflow detected but no valid "
"contacts found :( \n");
goto error;
}
LM_DBG("overflow on inserting new contact -> removing "
"<%.*s>\n", c_last->c.len, c_last->c.s);
if (ul.delete_ucontact( _r, c_last, 0)!=0) {
LM_ERR("failed to remove contact\n");
goto error;
}
num--;
} else {
LM_INFO("too many contacts for AOR <%.*s>, max=%d\n",
_r->aor.len, _r->aor.s, _sctx->max_contacts);
rerrno = R_TOO_MANY;
return -1;
}
}
/* pack the contact_info */
if ( (ci=pack_ci( 0, _c, e, 0, ul.nat_flag, _sctx->flags,
&_sctx->ownership_tag, &_sctx->cmatch))==0 ) {
LM_ERR("failed to extract contact info\n");
goto error;
}
if (ul.insert_ucontact( _r, &_c->uri, ci, &c, 0) < 0) {
rerrno = R_UL_INS_C;
LM_ERR("failed to insert contact\n");
goto error;
}
num++;
} else {
/* Contact found */
if (e == 0) {
/* it's expired */
if (_sctx->flags®_SAVE_MEMORY_FLAG) {
c->flags |= FL_MEM;
} else {
c->flags &= ~FL_MEM;
}
if (ul.delete_ucontact(_r, c, 0) < 0) {
rerrno = R_UL_DEL_C;
LM_ERR("failed to delete contact\n");
goto error;
}
continue;
} else {
/* do update */
/* if the contact to be updated is not valid, it will be after
* update, so need to compensate the total number of contact */
if ( !VALID_CONTACT(c,get_act_time()) )
num++;
while ( _sctx->max_contacts && num>_sctx->max_contacts ) {
if (_sctx->flags®_SAVE_FORCE_REG_FLAG) {
/* we are overflowing the number of maximum contacts,
so remove the first (oldest) one to prevent this
(but not the one to be updated !) */
for( c_it=_r->contacts,c_last=NULL ; c_it ;
c_it=c_it->next )
if (VALID_CONTACT(c_it, get_act_time()) && c_it!=c)
c_last=c_it;
if (c_last==NULL) {
LM_CRIT("BUG - overflow detected but no "
"valid contacts found :( \n");
goto error;
}
LM_DBG("overflow on update -> removing contact "
"<%.*s>\n", c_last->c.len, c_last->c.s);
if (ul.delete_ucontact( _r, c_last, 0)!=0) {
LM_ERR("failed to remove contact\n");
goto error;
}
num--;
} else {
LM_INFO("too many contacts for AOR <%.*s>, max=%d\n",
_r->aor.len, _r->aor.s, _sctx->max_contacts);
rerrno = R_TOO_MANY;
return -1;
}
}
/* pack the contact specific info */
if ( (ci=pack_ci( 0, _c, e, 0, ul.nat_flag, _sctx->flags,
&_sctx->ownership_tag, &_sctx->cmatch))==0 ) {
LM_ERR("failed to pack contact specific info\n");
goto error;
}
if (ul.update_ucontact(_r, c, ci, 0) < 0) {
rerrno = R_UL_UPD_C;
LM_ERR("failed to update contact\n");
goto error;
}
}
}
if (pn_enable && pn_add_reply_purr(c) != 0)
LM_ERR("failed to add +sip.pnspurr for Contact: '%.*s'\n",
_c->uri.len, _c->uri.s);
if (tcp_check) {
/* parse contact uri to see if transport is TCP */
if (parse_uri( _c->uri.s, _c->uri.len, &uri)<0) {
LM_ERR("failed to parse contact <%.*s>\n",
_c->uri.len, _c->uri.s);
} else if (is_tcp_based_proto(uri.proto)) {
if (e_max>0) {
LM_WARN("multiple TCP contacts on single REGISTER\n");
}
if (e>e_max) e_max = e;
}
}
}
if ( tcp_check && e_max>-1 ) {
if (e_max) e_max -= get_act_time();
trans_set_dst_attr( &_m->rcv, DST_FCNTL_SET_LIFETIME,
(void*)(long)(e_max + 10) );
}
return 0;
error:
return -1;
}
/*! \brief
* This function will process request that
* contained some contact header fields
*/
static inline int add_contacts(struct sip_msg* _m, contact_t* _c,
udomain_t* _d, struct save_ctx *_sctx)
{
int res;
urecord_t* r;
ul.lock_udomain(_d, &_sctx->aor);
res = ul.get_urecord(_d, &_sctx->aor, &r);
if (res < 0) {
rerrno = R_UL_GET_R;
LM_ERR("failed to retrieve record from usrloc\n");
ul.unlock_udomain(_d, &_sctx->aor);
return -2;
}
if (res == 0) { /* Contacts found */
if (update_contacts(_m, r, _c, _sctx) < 0) {
if (_sctx->flags & REG_SAVE_REQ_CT_ONLY_FLAG)
filter_contacts(r, _m);
build_contact(r->contacts,_m);
if (_sctx->flags & REG_SAVE_REQ_CT_ONLY_FLAG)
restore_contacts(r);
ul.release_urecord(r, 0);
ul.unlock_udomain(_d, &_sctx->aor);
return -3;
}
if (_sctx->flags & REG_SAVE_REQ_CT_ONLY_FLAG)
filter_contacts(r, _m);
build_contact(r->contacts,_m);
if (_sctx->flags & REG_SAVE_REQ_CT_ONLY_FLAG)
restore_contacts(r);
ul.release_urecord(r, 0);
} else {
if (insert_contacts(_m, _c, _d, &_sctx->aor, _sctx) < 0) {
ul.unlock_udomain(_d, &_sctx->aor);
return -4;
}
}
ul.unlock_udomain(_d, &_sctx->aor);
return 0;
}
/*! \brief
* Process REGISTER request and save it's contacts
*/
#define is_cflag_set(_name) ((sctx.flags)&(_name))
int save_aux(struct sip_msg* _m, str* forced_binding, void* _d, str* flags_s,
str* uri, str* _owtag)
{
struct save_ctx sctx;
contact_t* c;
contact_t* forced_c = NULL;
int st;
rerrno = R_FINE;
memset( &sctx, 0 , sizeof(sctx));
sctx.cmatch.mode = CT_MATCH_NONE;
sctx.min_expires = min_expires;
sctx.max_expires = max_expires;
if ( flags_s )
reg_parse_save_flags( flags_s, &sctx);
if (route_type == ONREPLY_ROUTE)
sctx.flags |= REG_SAVE_NOREPLY_FLAG;
if (parse_reg_headers(_m) < 0)
goto error;
if (forced_binding) {
if (parse_contacts(forced_binding, &forced_c) < 0) {
LM_ERR("Unable to parse forced binding [%.*s]\n",
forced_binding->len, forced_binding->s);
rerrno = R_INTERNAL;
goto error;
}
/* prevent processing all the headers from the message */
reset_first_contact();
st = 0;
c = forced_c;
} else {
if (check_contacts(_m, &st) > 0)
goto error;
c = get_first_contact(_m);
}
update_act_time();
if (!uri)
uri = &get_to(_m)->uri;
if (_owtag)
sctx.ownership_tag = *_owtag;
if (extract_aor(uri, &sctx.aor, 0, 0, reg_use_domain) < 0) {
LM_ERR("failed to extract Address Of Record\n");
goto error;
}
if (sctx.aor.len == 0) {
LM_ERR("the AoR URI is missing the 'username' part!\n");
rerrno = R_AOR_PARSE;
goto error;
}
if (c == 0) {
if (st) {
if (star((udomain_t*)_d, &sctx,_m) < 0)
goto error;
} else {
if (no_contacts((udomain_t*)_d, &sctx, _m) < 0)
goto error;
}
} else {
if (pn_enable && pn_inspect_request(_m, &c->uri, &sctx) != 0) {
LM_DBG("SIP PN processing failed (%d)\n", rerrno);
goto error;
}
if (add_contacts(_m, c, (udomain_t*)_d, &sctx) < 0)
goto error;
}
update_stat(accepted_registrations, 1);
if (!is_cflag_set(REG_SAVE_NOREPLY_FLAG) && (send_reply(_m,sctx.flags)<0))
goto return_minus_one;
if (forced_c) free_contacts(&forced_c);
return 1;
error:
update_stat(rejected_registrations, 1);
if ( !is_cflag_set(REG_SAVE_NOREPLY_FLAG) )
send_reply(_m,sctx.flags);
if (forced_c) free_contacts(&forced_c);
return -2;
return_minus_one:
if (forced_c) free_contacts(&forced_c);
return -1;
}
#define MAX_FORCED_BINDING_LEN 256
int save(struct sip_msg* _m, void* _d, str* _f, str* _s, str* _owtag)
{
struct sip_msg* msg = _m;
struct cell* t = NULL;
contact_t* _c;
contact_t* reply_c = NULL;
contact_t* request_c = NULL;
int st;
int ret;
int requested_exp = 0;
int enforced_exp = 0;
int_str val;
struct lump* l;
char* p;
char forced_binding_buf[MAX_FORCED_BINDING_LEN];
str forced_binding = {NULL, 0};
str *binding_uri;
str path_bk;
if(_m->first_line.type != SIP_REPLY)
return save_aux(_m, NULL, _d, _f, _s, _owtag);
memset(&val, 0, sizeof(int_str));
if(!tmb.t_gett) {
LM_ERR("TM module not loaded - can not save on reply\n");
return -1;
}
t = tmb.t_gett();
if(!t || t==T_UNDEFINED) {
LM_ERR("Transaction not created on Register - can not save on reply\n");
return -1;
}
msg = t->uas.request;
if(!msg) {
LM_ERR("NULL request - can not save on reply\n");
return -1;
}
if (parse_reg_headers(_m) < 0) return -1;
if (check_contacts(_m, &st) > 0) return -1;
if (parse_reg_headers(msg) < 0) return -1;
if (check_contacts(msg, &st) > 0) return -1;
/* detach the path vec from the msg as it is allocated in shm, and all
* the parse/set ops (done below by save_aux) assume it is in pkg */
path_bk = msg->path_vec;
msg->path_vec.s = NULL;
msg->path_vec.len = 0;
ret = -1;
/* msg - request
_m - reply
*/
request_c = get_first_contact(msg);
if(request_c) {
/* For now, we deal only with the first contact
* FIXME: implement multiple contact handling - see check_contacts() */
if(!request_c->expires || !request_c->expires->body.len) {
if (msg->expires && ((exp_body_t*)(msg->expires->parsed))->valid) {
requested_exp = ((exp_body_t*)(msg->expires->parsed))->val;
} else {
requested_exp = default_expires;
}
} else {
if (str2int(&(request_c->expires->body), (unsigned int*)&requested_exp)<0) {
LM_ERR("unable to get expires from [%.*s]\n",
request_c->expires->body.len, request_c->expires->body.s);
goto done;
}
}
LM_DBG("Binding received from client [%.*s] with requested expires [%d]\n",
request_c->uri.len, request_c->uri.s, requested_exp);
/* We will use the Contact from request:
* - check if a modified contact was set in avp */
if (mct_avp_name >= 0 &&
search_first_avp(mct_avp_type,mct_avp_name,&val,0)
&& val.s.len > 0) {
LM_DBG("Binding sent to upper registrar [%.*s]\n",
val.s.len, val.s.s);
binding_uri = &val.s;
} else {
binding_uri = &request_c->uri;
}
if (requested_exp) {
/* Let's get the contact from reply */
_c = get_first_contact(_m);
while (_c) {
if (compare_uris(binding_uri, NULL, &_c->uri, NULL) == 0) {
if(_c->expires && _c->expires->body.len) {
if(str2int(&(_c->expires->body),
(unsigned int*)&enforced_exp)<0) {
LM_ERR("unable to get expires from [%.*s]\n",
_c->expires->body.len,
_c->expires->body.s);
goto done;
}
LM_DBG("Binding received from upper registrar"
" [%.*s] with imposed expires [%d]\n",
_c->uri.len, _c->uri.s, enforced_exp);
reply_c = _c;
forced_binding.len = request_c->uri.len + 11 +
reply_c->expires->body.len;
if (forced_binding.len <= MAX_FORCED_BINDING_LEN) {
forced_binding.s = forced_binding_buf;
forced_binding_buf[0] = '<';
memcpy(&forced_binding_buf[1],
request_c->uri.s,
request_c->uri.len);
memcpy(&forced_binding_buf[request_c->uri.len + 1],
">;expires=", 10);
memcpy(&forced_binding_buf[request_c->uri.len + 11],
reply_c->expires->body.s,
reply_c->expires->body.len);
LM_DBG("forcing binding [%.*s]\n",
forced_binding.len,
forced_binding.s);
break;
} else {
LM_ERR("forced binding to BIG:"
" %d > MAX_FORCED_BINDING_LEN\n",
forced_binding.len);
goto done;
}
}
} else {
LM_DBG("Unmatched binding [%.*s]\n",
_c->uri.len, _c->uri.s);
}
_c = get_next_contact(_c);
}
}
ret = save_aux(msg, forced_binding.s?&forced_binding:NULL, _d, _f, _s, _owtag);
} else {
LM_DBG("No Contact in request => this is an interogation\n");
ret = 1;
}
/* if the contact was changed in register - put the modif value */
if(request_c && requested_exp && val.s.s) {
if(reply_c) {
LM_DBG("replacing contact uri [%.*s] with [%.*s]\n",
reply_c->uri.len, reply_c->uri.s,
request_c->uri.len, request_c->uri.s);
/* replace with what was received in Register */
/* reply_c->uri - now contains the initial received value */
if((l=del_lump(_m, reply_c->uri.s - _m->buf, reply_c->uri.len, 0))==0) {
LM_ERR("Failed to delete contact uri lump\n");
ret = -1;
goto done;
}
p = pkg_malloc( request_c->uri.len);
if (p==0) {
LM_ERR("no more pkg mem\n");
ret = -1;
goto done;
}
memcpy( p, request_c->uri.s, request_c->uri.len );
if (insert_new_lump_after( l, p, request_c->uri.len, 0)==0) {
LM_ERR("insert new lump failed\n");
pkg_free(p);
ret =-1;
goto done;
}
}
}
done:
/* remove whatever was parsed and attached as pkg to the shm cloned req */
clean_msg_clone(t->uas.request, t->uas.request, t->uas.end_request);
/* free and restore the shm path vec */
if (msg->path_vec.s) pkg_free(msg->path_vec.s);
msg->path_vec = path_bk;
return ret;
}
/**
* _remove - Delete an entire AOR entry or one or more of its Contacts
*
* @domain: logical domain name (usually name of location table)
* @aor_gp: address-of-record as a SIP URI (plain string or pvar)
* @contact_gp: contact URI to be deleted
* @next_hop_gp: IP/domain in front of contacts to be deleted
* @sip_instance_gp: delete contacts with given "+sip_instance"
*
* @return: 1 on success, negative on failure
*/
int _remove(struct sip_msg *msg, void *udomain, str *aor_uri, str *match_ct,
str *match_next_hop, str *match_sin)
{
struct hostent delete_nh_he, *he;
urecord_t *record;
ucontact_t *contact, *it;
str aor_user;
int ret = 1;
unsigned short delete_port = 0;
if (extract_aor(aor_uri, &aor_user, 0, 0, reg_use_domain) < 0) {
LM_ERR("failed to extract Address Of Record\n");
return E_BAD_URI;
}
memset( &delete_nh_he, 0, sizeof(struct hostent));
ul.lock_udomain((udomain_t *)udomain, &aor_user);
if (ul.get_urecord((udomain_t *)udomain, &aor_user, &record) != 0) {
LM_DBG("no record '%.*s' found!\n", aor_user.len, aor_user.s);
goto out_unlock;
}
/* without any additional filtering, delete the whole urecord entry */
if (!match_ct && !match_next_hop && !match_sin) {
if (ul.delete_urecord((udomain_t *)udomain, &aor_user, record, 0) != 0) {
LM_ERR("failed to delete urecord for aor '%.*s'\n",
aor_user.len, aor_user.s);
ret = E_UNSPEC;
goto out_unlock;
}
goto out_unlock;
}
if (match_ct)
LM_DBG("Delete by contact: [%.*s]\n", match_ct->len, match_ct->s);
if (match_sin)
LM_DBG("Delete by sip_instance: [%.*s]\n",
match_sin->len, match_sin->s);
if (match_next_hop) {
he = sip_resolvehost(match_next_hop, &delete_port, NULL, 0, NULL);
if (!he) {
LM_ERR("cannot resolve given host: '%.*s'\n",
match_next_hop->len, match_next_hop->s);
ret = E_UNSPEC;
goto out_unlock;
}
struct sockaddr_in daddr;
memcpy(&daddr.sin_addr, he->h_addr_list[0], sizeof(daddr.sin_addr));
LM_DBG("Delete by host: '%s'\n",
inet_ntoa(daddr.sin_addr));
if (hostent_cpy(&delete_nh_he, he) != 0) {
LM_ERR("no more pkg mem\n");
ret = E_OUT_OF_MEM;
goto out_unlock;
}
}
for (it = record->contacts; it; ) {
contact = it;
it = it->next;
LM_DBG("checking contact uri '%.*s'\n", contact->c.len, contact->c.s);
he = sip_resolvehost(&contact->next_hop.name,
&contact->next_hop.port,
&contact->next_hop.proto, 0, NULL);
if (!he) {
LM_ERR("failed to resolve next hop %.*s of contact '%.*s'\n",
contact->next_hop.name.len, contact->next_hop.name.s,
contact->c.len, contact->c.s);
continue;
}
struct sockaddr_in daddr;
memcpy(&daddr.sin_addr, he->h_addr_list[0], sizeof(daddr.sin_addr));
LM_DBG("next hop is [%.*s] resolving to [%s]\n",
contact->next_hop.name.len, contact->next_hop.name.s,
inet_ntoa(daddr.sin_addr));
if (match_next_hop) {
if (memcmp(delete_nh_he.h_addr_list[0],
he->h_addr_list[0], he->h_length))
continue;
}