int w_is_supported(sip_msg_t *msg, char *_option, char *p2)
{
unsigned long option;
option = (unsigned long)_option;
if (parse_supported(msg) < 0)
return -1;
if ((((struct option_tag_body*)msg->supported->parsed)->option_tags_all &
option) == 0)
return -1;
else
return 1;
}
/**
* Gether the message information about SST from the current message
* being processed.
*
* @param msg The current message to parse.
* @param minfo The SST information found in the message.
*
* @return 0 on success, -1 on a parsing error.
*/
static int parse_msg_for_sst_info(struct sip_msg *msg, sst_msg_info_t *minfo)
{
int rtn = 0;
struct session_expires se = {0,0};
if (!msg || !minfo) {
return (-1);
}
/*
* parse the supported infor
*/
minfo->supported = 0; /*Clear it */
minfo->se = 0;
minfo->refresher = sst_refresher_unspecified;
minfo->min_se = 0;
/*
* The parse_supported() will return 0 if found and parsed OK, -1
* if not found or an error parsing the one it did find! So assume
* it is not found if unsuccessfull.
*/
if ((rtn = parse_supported(msg)) == 0) {
if ((((struct option_tag_body*)msg->supported->parsed)->option_tags_all
& F_OPTION_TAG_TIMER)) {
minfo->supported = 1;
}
}
/*
* Parse the Min-SE: header next.
*/
minfo->min_se = 0;
if ((rtn = parse_min_se(msg, &minfo->min_se)) != parse_sst_success) {
minfo->min_se = 0; /* Make sure it statys clean */
}
minfo->se = 0;
if ((rtn = parse_session_expires(msg, &se)) == parse_sst_success) {
minfo->se = se.interval;
minfo->refresher = se.refresher;
}
return(0);
}
/*! \brief
* Allocate a memory buffer and print Contact
* header fields into it
*/
int build_contact(sip_msg_t *msg, ucontact_t* c, str *host)
{
char *p, *cp;
char *a;
int fl, len;
str user;
str inst;
unsigned int ahash;
unsigned short digit;
int mode;
sr_xavp_t *xavp=NULL;
sr_xavp_t *list=NULL;
str xname = {"ruid", 4};
sr_xval_t xval;
if(msg!=NULL && parse_supported(msg)==0
&& (get_supported(msg) & F_OPTION_TAG_GRUU))
mode = 1;
else
mode = 0;
contact.data_len = calc_buf_len(c, host, mode);
if (!contact.data_len) return 0;
if (!contact.buf || (contact.buf_len < contact.data_len)) {
if (contact.buf) pkg_free(contact.buf);
contact.buf = (char*)pkg_malloc(contact.data_len);
if (!contact.buf) {
contact.data_len = 0;
contact.buf_len = 0;
LM_ERR("no pkg memory left\n");
return -1;
} else {
contact.buf_len = contact.data_len;
}
}
p = contact.buf;
memcpy(p, CONTACT_BEGIN, CONTACT_BEGIN_LEN);
p += CONTACT_BEGIN_LEN;
/* add xavp with details of the record (ruid, ...) */
if(reg_xavp_rcd.s!=NULL)
{
list = xavp_get(®_xavp_rcd, NULL);
xavp = list;
}
fl = 0;
while(c) {
if (VALID_CONTACT(c, act_time)) {
if (fl) {
memcpy(p, CONTACT_SEP, CONTACT_SEP_LEN);
p += CONTACT_SEP_LEN;
} else {
fl = 1;
}
*p++ = '<';
memcpy(p, c->c.s, c->c.len);
p += c->c.len;
*p++ = '>';
len = len_q(c->q);
if (len) {
memcpy(p, Q_PARAM, Q_PARAM_LEN);
p += Q_PARAM_LEN;
memcpy(p, q2str(c->q, 0), len);
p += len;
}
memcpy(p, EXPIRES_PARAM, EXPIRES_PARAM_LEN);
p += EXPIRES_PARAM_LEN;
cp = int2str((int)(c->expires - act_time), &len);
memcpy(p, cp, len);
p += len;
if (rcv_param.len>0 && c->received.s) {
*p++ = ';';
memcpy(p, rcv_param.s, rcv_param.len);
p += rcv_param.len;
*p++ = '=';
*p++ = '\"';
memcpy(p, c->received.s, c->received.len);
p += c->received.len;
*p++ = '\"';
}
if (reg_gruu_enabled==1 && c->instance.len>0 && mode==1) {
user.s = c->aor->s;
a = memchr(c->aor->s, '@', c->aor->len);
if(a!=NULL) {
user.len = a - user.s;
} else {
user.len = c->aor->len;
}
/* pub-gruu */
memcpy(p, PUB_GRUU_PARAM, PUB_GRUU_PARAM_LEN);
p += PUB_GRUU_PARAM_LEN;
*p++ = '\"';
memcpy(p, "sip:", 4);
p += 4;
if(a!=NULL) {
memcpy(p, c->aor->s, c->aor->len);
p += c->aor->len;
} else {
memcpy(p, user.s, user.len);
p += user.len;
*p++ = '@';
memcpy(p, host->s, host->len);
p += host->len;
}
memcpy(p, GR_PARAM, GR_PARAM_LEN);
p += GR_PARAM_LEN;
inst = c->instance;
if(inst.s[0]=='<' && inst.s[inst.len-1]=='>') {
inst.s++;
inst.len -= 2;
}
memcpy(p, inst.s, inst.len);
p += inst.len;
*p++ = '\"';
/* temp-gruu */
memcpy(p, TMP_GRUU_PARAM, TMP_GRUU_PARAM_LEN);
p += TMP_GRUU_PARAM_LEN;
*p++ = '\"';
memcpy(p, "sip:", 4);
p += 4;
memcpy(p, c->ruid.s, c->ruid.len);
p += c->ruid.len;
*p++ = '-';
ahash = ul.get_aorhash(c->aor);
while(ahash!=0)
{
digit = ahash & 0x0f;
*p++ = (digit >= 10) ? digit + 'a' - 10 : digit + '0';
ahash >>= 4;
}
*p++ = '@';
memcpy(p, host->s, host->len);
p += host->len;
memcpy(p, GR_PARAM, GR_PARAM_LEN);
p += GR_PARAM_LEN - 1;
*p++ = '\"';
}
if (c->instance.len>0) {
/* +sip-instance */
memcpy(p, SIP_INSTANCE_PARAM, SIP_INSTANCE_PARAM_LEN);
p += SIP_INSTANCE_PARAM_LEN;
*p++ = '\"';
memcpy(p, c->instance.s, c->instance.len);
p += c->instance.len;
*p++ = '\"';
}
if (c->reg_id>0) {
/* reg-id */
memcpy(p, REG_ID_PARAM, REG_ID_PARAM_LEN);
p += REG_ID_PARAM_LEN;
cp = int2str(c->reg_id, &len);
memcpy(p, cp, len);
p += len;
}
if(reg_xavp_rcd.s!=NULL)
{
memset(&xval, 0, sizeof(sr_xval_t));
xval.type = SR_XTYPE_STR;
xval.v.s = c->ruid;
if(xavp_add_value(&xname, &xval, &xavp)==NULL) {
LM_ERR("cannot add ruid value to xavp\n");
}
}
}
c = c->next;
}
/*! \brief
* Send a reply
*/
int send_reply(struct sip_msg* _m, unsigned int _flags)
{
str unsup = str_init(SUPPORTED_PATH_STR);
long code;
str msg = str_init(MSG_200); /* makes gcc shut up */
char* buf;
if (contact.data_len > 0) {
add_lump_rpl( _m, contact.buf, contact.data_len, LUMP_RPL_HDR|LUMP_RPL_NODUP|LUMP_RPL_NOFREE);
contact.data_len = 0;
}
if (rerrno == R_FINE && (_flags®_SAVE_PATH_FLAG) && _m->path_vec.s) {
if ( (_flags®_SAVE_PATH_OFF_FLAG)==0 ) {
if (parse_supported(_m)<0 && (_flags®_SAVE_PATH_STRICT_FLAG)) {
rerrno = R_PATH_UNSUP;
if (add_unsupported(_m, &unsup) < 0)
return -1;
if (add_path(_m, &_m->path_vec) < 0)
return -1;
}
else if (get_supported(_m) & F_SUPPORTED_PATH) {
if (add_path(_m, &_m->path_vec) < 0)
return -1;
} else if ((_flags®_SAVE_PATH_STRICT_FLAG)) {
rerrno = R_PATH_UNSUP;
if (add_unsupported(_m, &unsup) < 0)
return -1;
if (add_path(_m, &_m->path_vec) < 0)
return -1;
}
}
}
code = codes[rerrno];
switch(code) {
case 200: msg.s = MSG_200; msg.len = sizeof(MSG_200)-1; break;
case 400: msg.s = MSG_400; msg.len = sizeof(MSG_400)-1;break;
case 420: msg.s = MSG_420; msg.len = sizeof(MSG_420)-1;break;
case 500: msg.s = MSG_500; msg.len = sizeof(MSG_500)-1;break;
case 503: msg.s = MSG_503; msg.len = sizeof(MSG_503)-1;break;
}
if (code != 200) {
buf = (char*)pkg_malloc(E_INFO_LEN + error_info[rerrno].len + CRLF_LEN + 1);
if (!buf) {
LM_ERR("no pkg memory left\n");
return -1;
}
memcpy(buf, E_INFO, E_INFO_LEN);
memcpy(buf + E_INFO_LEN, error_info[rerrno].s, error_info[rerrno].len);
memcpy(buf + E_INFO_LEN + error_info[rerrno].len, CRLF, CRLF_LEN);
add_lump_rpl( _m, buf, E_INFO_LEN + error_info[rerrno].len + CRLF_LEN,
LUMP_RPL_HDR|LUMP_RPL_NODUP);
if (code >= 500 && code < 600 && retry_after) {
if (add_retry_after(_m) < 0) {
return -1;
}
}
}
if (sigb.reply(_m, code, &msg, NULL) == -1) {
LM_ERR("failed to send %ld %.*s\n", code, msg.len,msg.s);
return -1;
} else return 0;
}
int save(struct sip_msg* _m, udomain_t* _d, int _cflags, str *_uri)
{
contact_t* c;
int st, mode;
str aor;
int ret;
sip_uri_t *u;
rr_t *route;
struct sip_uri puri;
param_hooks_t hooks;
param_t *params;
contact_t *contact;
int use_ob = 1, use_regid = 1;
u = parse_to_uri(_m);
if(u==NULL)
goto error;
rerrno = R_FINE;
ret = 1;
if (parse_message(_m) < 0) {
goto error;
}
if (check_contacts(_m, &st) > 0) {
goto error;
}
if (parse_supported(_m) == 0) {
if (!(get_supported(_m) & F_OPTION_TAG_OUTBOUND)
&& reg_outbound_mode == REG_OUTBOUND_REQUIRE) {
LM_WARN("Outbound required by server and not supported by UAC\n");
rerrno = R_OB_UNSUP;
goto error;
}
}
if (parse_require(_m) == 0) {
if ((get_require(_m) & F_OPTION_TAG_OUTBOUND)
&& reg_outbound_mode == REG_OUTBOUND_NONE) {
LM_WARN("Outbound required by UAC and not supported by server\n");
rerrno = R_OB_REQD;
goto error;
}
}
if (reg_outbound_mode != REG_OUTBOUND_NONE
&& _m->contact && _m->contact->parsed
&& !(parse_headers(_m, HDR_VIA2_F, 0) == -1 || _m->via2 == 0
|| _m->via2->error != PARSE_OK)) {
/* Outbound supported on server, and more than one Via: - not the first hop */
if (!(parse_headers(_m, HDR_PATH_F, 0) == -1 || _m->path == 0)) {
route = (rr_t *)0;
if (parse_rr_body(_m->path->body.s, _m->path->body.len, &route) < 0) {
LM_ERR("Failed to parse Path: header body\n");
goto error;
}
if (parse_uri(route->nameaddr.uri.s, route->nameaddr.uri.len, &puri) < 0) {
LM_ERR("Failed to parse Path: URI\n");
goto error;
}
if (parse_params(&puri.params, CLASS_URI, &hooks, ¶ms) != 0) {
LM_ERR("Failed to parse Path: URI parameters\n");
goto error;
}
if (!hooks.uri.ob) {
/* No ;ob parameter to top Path: URI - no outbound */
use_ob = 0;
}
} else {
/* No Path: header - no outbound */
use_ob = 0;
}
contact = ((contact_body_t *) _m->contact->parsed)->contacts;
if (!contact) {
LM_ERR("empty Contact:\n");
goto error;
}
if ((use_ob == 0) && (reg_regid_mode == REG_REGID_OUTBOUND)) {
if ((get_supported(_m) & F_OPTION_TAG_OUTBOUND)
&& contact->reg_id) {
LM_WARN("Outbound used by UAC but not supported by edge proxy\n");
rerrno = R_OB_UNSUP_EDGE;
goto error;
} else {
/* ignore ;reg-id parameter */
use_regid = 0;
}
}
}
get_act_time();
c = get_first_contact(_m);
if (extract_aor((_uri)?_uri:&get_to(_m)->uri, &aor, NULL) < 0) {
LM_ERR("failed to extract Address Of Record\n");
goto error;
}
mem_only = is_cflag_set(REG_SAVE_MEM_FL)?FL_MEM:FL_NONE;
if (c == 0) {
if (st) {
if (star(_m, (udomain_t*)_d, &aor, &u->host) < 0) goto error;
else ret=3;
} else {
if (no_contacts(_m, (udomain_t*)_d, &aor, &u->host) < 0) goto error;
else ret=4;
}
} else {
mode = is_cflag_set(REG_SAVE_REPL_FL)?1:0;
if ((ret=add_contacts(_m, (udomain_t*)_d, &aor, mode, use_regid)) < 0)
goto error;
ret = (ret==0)?1:ret;
}
update_stat(accepted_registrations, 1);
/* Only send reply upon request, not upon reply */
if ((is_route_type(REQUEST_ROUTE) || is_route_type(FAILURE_ROUTE))
&& !is_cflag_set(REG_SAVE_NORPL_FL) && (reg_send_reply(_m) < 0))
return -1;
return ret;
error:
update_stat(rejected_registrations, 1);
if (is_route_type(REQUEST_ROUTE) && !is_cflag_set(REG_SAVE_NORPL_FL) )
reg_send_reply(_m);
return 0;
}
/*! \brief
* Send a reply
*/
int reg_send_reply(struct sip_msg* _m, contact_for_header_t* contact_header) {
str unsup = str_init(OPTION_TAG_PATH_STR);
long code;
str msg = str_init(MSG_200); /* makes gcc shut up */
char* buf;
if (contact_header && contact_header->buf && contact_header->data_len > 0) {
LM_DBG("Contacts: %.*s\n", contact_header->data_len, contact_header->buf);
add_lump_rpl(_m, contact_header->buf, contact_header->data_len, LUMP_RPL_HDR | LUMP_RPL_NODUP | LUMP_RPL_NOFREE);
contact_header->data_len = 0;
}
if (rerrno == R_FINE && path_enabled && _m->path_vec.s) {
if (path_mode != PATH_MODE_OFF) {
if (parse_supported(_m) < 0 && path_mode == PATH_MODE_STRICT) {
rerrno = R_PATH_UNSUP;
if (add_unsupported(_m, &unsup) < 0)
return -1;
if (add_path(_m, &_m->path_vec) < 0)
return -1;
} else if (get_supported(_m) & F_OPTION_TAG_PATH) {
if (add_path(_m, &_m->path_vec) < 0)
return -1;
} else if (path_mode == PATH_MODE_STRICT) {
rerrno = R_PATH_UNSUP;
if (add_unsupported(_m, &unsup) < 0)
return -1;
if (add_path(_m, &_m->path_vec) < 0)
return -1;
}
}
}
code = codes[rerrno];
switch (code) {
case 200: msg.s = MSG_200;
msg.len = sizeof (MSG_200) - 1;
break;
case 400: msg.s = MSG_400;
msg.len = sizeof (MSG_400) - 1;
break;
case 420: msg.s = MSG_420;
msg.len = sizeof (MSG_420) - 1;
break;
case 500: msg.s = MSG_500;
msg.len = sizeof (MSG_500) - 1;
break;
case 503: msg.s = MSG_503;
msg.len = sizeof (MSG_503) - 1;
break;
}
if (code != 200) {
buf = (char*) pkg_malloc(E_INFO_LEN + error_info[rerrno].len + CRLF_LEN + 1);
if (!buf) {
LM_ERR("no pkg memory left\n");
return -1;
}
memcpy(buf, E_INFO, E_INFO_LEN);
memcpy(buf + E_INFO_LEN, error_info[rerrno].s, error_info[rerrno].len);
memcpy(buf + E_INFO_LEN + error_info[rerrno].len, CRLF, CRLF_LEN);
add_lump_rpl(_m, buf, E_INFO_LEN + error_info[rerrno].len + CRLF_LEN,
LUMP_RPL_HDR | LUMP_RPL_NODUP);
if (code >= 500 && code < 600 && cfg_get(registrar, registrar_cfg, retry_after)) {
if (add_retry_after(_m) < 0) {
return -1;
}
}
}
if ((code > 199) && (code < 299)) {
if (p_associated_uri.data_len > 0) {
add_lump_rpl(_m, p_associated_uri.buf, p_associated_uri.data_len,
LUMP_RPL_HDR | LUMP_RPL_NODUP | LUMP_RPL_NOFREE);
p_associated_uri.data_len = 0;
}
if (add_service_route(_m, &scscf_serviceroute_uri_str) < 0) { //TODO - need to insert orig into this scscf_name
return -1;
}
}
if (slb.freply(_m, code, &msg) < 0) {
LM_ERR("failed to send %ld %.*s\n", code, msg.len, msg.s);
return -1;
} else return 0;
}
int rls_handle_subscribe(struct sip_msg* msg, char* s1, char* s2)
{
struct to_body *pto, *pfrom = NULL;
subs_t subs;
pres_ev_t* event= NULL;
str* contact= NULL;
xmlDocPtr doc= NULL;
xmlNodePtr service_node= NULL;
unsigned int hash_code= 0;
event_t* parsed_event;
param_t* ev_param= NULL;
int init_req;
int reply_code;
str reply_str;
/*** filter: 'For me or for presence server?' */
reply_code = 400;
reply_str = pu_400_rpl;
memset(&subs, 0, sizeof(subs_t));
if ( parse_headers(msg,HDR_EOH_F, 0)==-1 )
{
LM_ERR("parsing headers\n");
goto error;
}
/* check for Support: eventlist header */
if(!msg->supported)
{
LM_DBG("no supported header found\n");
return to_presence_code;
}
if(parse_supported(msg) < 0)
{
LM_ERR("failed to parse supported headers\n");
reply_code = 500;
reply_str = pu_500_rpl;
goto error;
}
if(!(get_supported(msg) & F_SUPPORTED_EVENTLIST))
{
LM_DBG("No 'Support: eventlist' header found\n");
return to_presence_code;
}
/* inspecting the Event header field */
if(msg->event && msg->event->body.len > 0)
{
if (!msg->event->parsed && (parse_event(msg->event) < 0))
{
LM_ERR("cannot parse Event header\n");
reply_code = 500;
reply_str = pu_500_rpl;
goto error;
}
if(! ( ((event_t*)msg->event->parsed)->parsed & rls_events) )
{
return to_presence_code;
}
}
else
{
goto bad_event;
}
/* search event in the list */
parsed_event= (event_t*)msg->event->parsed;
event= pres_search_event(parsed_event);
if(event== NULL)
{
goto bad_event;
}
subs.event= event;
/* extract the id if any*/
ev_param= parsed_event->params;
while(ev_param)
{
if(ev_param->name.len== 2 && strncasecmp(ev_param->name.s, "id", 2)== 0)
{
subs.event_id= ev_param->body;
break;
}
ev_param= ev_param->next;
}
pto = get_to(msg);
if (pto == NULL || pto->error != PARSE_OK)
{
LM_ERR("parsing 'To' header failed\n");
goto error;
}
if(parse_from_uri(msg)<0)
{
LM_ERR("failed to parse From header\n");
goto error;
}
pfrom = (struct to_body*)msg->from->parsed;
if(pfrom->tag_value.s ==NULL || pfrom->tag_value.len == 0)
{
LM_ERR("no from tag value present\n");
goto error;
}
/* verify if the presentity URI is a resource list */
if(pto->tag_value.s== NULL || pto->tag_value.len==0)
/* if an initial Subscribe */
{
struct sip_uri fu = ((struct to_body*)msg->from->parsed)->parsed_uri;
if( parse_sip_msg_uri(msg)< 0)
{
LM_ERR("parsing Request URI failed\n");
goto error;
}
/*verify if Request URI represents a list by asking xcap server*/
if(uandd_to_uri(msg->parsed_uri.user, msg->parsed_uri.host,
&subs.pres_uri)< 0)
{
LM_ERR("while constructing uri from user and domain\n");
reply_code = 500;
reply_str = pu_500_rpl;
goto error;
}
if( get_resource_list(&subs.pres_uri, fu.user, fu.host,
&service_node, &doc) < 0)
{
LM_ERR("failed to get resource list document\n");
reply_code = 500;
reply_str = pu_500_rpl;
goto error;
}
if(doc== NULL|| service_node==NULL)
{
LM_DBG("list not found - search for uri = %.*s\n",subs.pres_uri.len,
subs.pres_uri.s);
pkg_free(subs.pres_uri.s);
return to_presence_code;
}
}
else /* if request inside a dialog */
{
if( msg->callid==NULL || msg->callid->body.s==NULL)
{
LM_ERR("cannot parse callid header\n");
goto error;
}
/* search if a stored dialog */
hash_code= core_hash(&msg->callid->body, &pto->tag_value, hash_size);
lock_get(&rls_table[hash_code].lock);
if(pres_search_shtable(rls_table,msg->callid->body,
pto->tag_value, pfrom->tag_value, hash_code)== NULL)
{
lock_release(&rls_table[hash_code].lock);
/* reply with Call/Transaction Does Not Exist */
LM_DBG("No dialog match found\n");
return to_presence_code;
}
lock_release(&rls_table[hash_code].lock);
}
/* extract dialog information from message headers */
if(pres_extract_sdialog_info(&subs, msg, rls_max_expires, &init_req,
server_address)< 0)
{
LM_ERR("bad Subscribe request\n");
goto error;
}
reply_code = 500;
reply_str = pu_500_rpl;
if(init_req) /* if an initial subscribe */
{
/** reply with 200 OK*/
if(reply_200(msg, &subs.local_contact, subs.expires, &subs.to_tag)< 0)
goto error_free;
hash_code= core_hash(&subs.callid, &subs.to_tag, hash_size);
subs.local_cseq= 0;
if(subs.expires!= 0)
{
subs.version= 1;
if(pres_insert_shtable(rls_table, hash_code, &subs)< 0)
{
LM_ERR("while adding new subscription\n");
goto error_free;
}
}
}
else
{
if(update_rlsubs(&subs, hash_code, &reply_code, &reply_str) < 0)
{
LM_ERR("while updating resource list subscription\n");
goto error;
}
if(get_resource_list(&subs.pres_uri, subs.from_user,
subs.from_domain, &service_node, &doc)< 0)
{
LM_ERR("when getting resource list\n");
goto error;
}
if(doc== NULL || service_node== NULL)
{
LM_DBG("list not found( in-dialog request)- search for uri = %.*s\n",
subs.pres_uri.len, subs.pres_uri.s);
reply_code = 404;
reply_str = pu_404_rpl;
goto error;
}
/** reply with 200 OK*/
if(reply_200(msg, &subs.local_contact, subs.expires, 0)< 0)
goto error_free;
}
/*** send Subscribe requests for all in the list */
/* call sending Notify with full state */
if(send_full_notify(&subs, service_node, subs.version,
&subs.pres_uri,hash_code)< 0)
{
LM_ERR("while sending full state Notify\n");
goto error_free;
}
if(resource_subscriptions(&subs, service_node)< 0)
{
LM_ERR("while sending Subscribe requests to resources in a list\n");
goto error_free;
}
if(contact)
{
if(contact->s)
pkg_free(contact->s);
pkg_free(contact);
}
pkg_free(subs.pres_uri.s);
if(subs.record_route.s)
pkg_free(subs.record_route.s);
xmlFreeDoc(doc);
return 1;
bad_event:
if(reply_489(msg)< 0)
LM_ERR("failed to send 489 reply\n");
goto error_free;
error:
if (rls_sigb.reply(msg, reply_code, &reply_str, 0) == -1)
{
LM_ERR("failed to send 400 reply\n");
return -1;
}
error_free:
if(contact)
{
if(contact->s)
pkg_free(contact->s);
pkg_free(contact);
}
if(subs.pres_uri.s)
pkg_free(subs.pres_uri.s);
if(subs.record_route.s)
pkg_free(subs.record_route.s);
if(doc)
xmlFreeDoc(doc);
return -1;
}
int rls_handle_subscribe(struct sip_msg* msg, str watcher_user, str watcher_domain)
{
subs_t subs;
pres_ev_t* event = NULL;
int err_ret = -1;
int ret = to_presence_code;
str* contact = NULL;
xmlDocPtr doc = NULL;
xmlNodePtr service_node = NULL;
unsigned int hash_code=0;
int to_tag_gen = 0;
event_t* parsed_event;
param_t* ev_param = NULL;
str reason;
int rt;
str rlsubs_did = {0, 0};
memset(&subs, 0, sizeof(subs_t));
/** sanity checks - parse all headers */
if (parse_headers(msg, HDR_EOH_F, 0)<-1)
{
LM_ERR("failed parsing all headers\n");
if (slb.freply(msg, 400, &pu_400_rpl) < 0)
{
LM_ERR("while sending 400 reply\n");
return -1;
}
return 0;
}
/* check for To and From headesr */
if(parse_to_uri(msg)<0 || parse_from_uri(msg)<0)
{
LM_ERR("failed to find To or From headers\n");
if (slb.freply(msg, 400, &pu_400_rpl) < 0)
{
LM_ERR("while sending 400 reply\n");
return -1;
}
return 0;
}
if(get_from(msg)->tag_value.s ==NULL || get_from(msg)->tag_value.len==0)
{
LM_ERR("no from tag value present\n");
return -1;
}
if(msg->callid==NULL || msg->callid->body.s==NULL)
{
LM_ERR("cannot find callid header\n");
return -1;
}
if(parse_sip_msg_uri(msg)<0)
{
LM_ERR("failed parsing Request URI\n");
return -1;
}
/* check for header 'Support: eventlist' */
if(msg->supported==NULL)
{
LM_DBG("supported header not found - not for rls\n");
goto forpresence;
}
if(parse_supported(msg)<0)
{
LM_ERR("failed to parse supported headers\n");
return -1;
}
if(!(get_supported(msg) & F_SUPPORTED_EVENTLIST))
{
LM_DBG("No support for 'eventlist' - not for rls\n");
goto forpresence;
}
/* inspecting the Event header field */
if(msg->event && msg->event->body.len > 0)
{
if (!msg->event->parsed && (parse_event(msg->event) < 0))
{
LM_ERR("cannot parse Event header\n");
goto error;
}
if(! ( ((event_t*)msg->event->parsed)->type & rls_events) )
{
goto forpresence;
}
} else {
goto bad_event;
}
/* search event in the list */
parsed_event = (event_t*)msg->event->parsed;
event = pres_search_event(parsed_event);
if(event==NULL)
{
goto bad_event;
}
subs.event= event;
/* extract the id if any*/
ev_param= parsed_event->params.list;
while(ev_param)
{
if(ev_param->name.len==2 && strncmp(ev_param->name.s, "id", 2)==0)
{
subs.event_id = ev_param->body;
break;
}
ev_param= ev_param->next;
}
/* extract dialog information from message headers */
if(pres_extract_sdialog_info(&subs, msg, rls_max_expires,
&to_tag_gen, rls_server_address,
watcher_user, watcher_domain)<0)
{
LM_ERR("bad subscribe request\n");
goto error;
}
hash_code = core_hash(&subs.callid, &subs.to_tag, hash_size);
if (CONSTR_RLSUBS_DID(&subs, &rlsubs_did) < 0)
{
LM_ERR("cannot build rls subs did\n");
goto error;
}
subs.updated = core_hash(&rlsubs_did, NULL, 0) %
(waitn_time * rls_notifier_poll_rate * rls_notifier_processes);
if(get_to(msg)->tag_value.s==NULL || get_to(msg)->tag_value.len==0)
{ /* initial Subscribe */
/*verify if Request URI represents a list by asking xcap server*/
if(uandd_to_uri(msg->parsed_uri.user, msg->parsed_uri.host,
&subs.pres_uri)<0)
{
LM_ERR("while constructing uri from user and domain\n");
goto error;
}
if(rls_get_service_list(&subs.pres_uri, &subs.watcher_user,
&subs.watcher_domain, &service_node, &doc)<0)
{
LM_ERR("while attepmting to get a resource list\n");
goto error;
}
if(doc==NULL)
{
/* if not for RLS, pass it to presence serivce */
LM_DBG("list not found - searched for uri <%.*s>\n",
subs.pres_uri.len, subs.pres_uri.s);
goto forpresence;
}
/* if correct reply with 200 OK */
if(reply_200(msg, &subs.local_contact, subs.expires)<0)
goto error;
subs.local_cseq = 0;
if(subs.expires != 0)
{
subs.version = 1;
if (dbmode==RLS_DB_ONLY)
{
rt=insert_rlsdb( &subs );
}
else
{
rt=pres_insert_shtable(rls_table, hash_code, &subs);
}
if (rt<0)
{
LM_ERR("while adding new subscription\n");
goto error;
}
}
} else {
/* search if a stored dialog */
if ( dbmode == RLS_DB_ONLY )
{
if (rls_dbf.start_transaction)
{
if (rls_dbf.start_transaction(rls_db, DB_LOCKING_WRITE) < 0)
{
LM_ERR("in start_transaction\n");
goto error;
}
}
rt = get_dialog_subscribe_rlsdb(&subs);
if (rt <= 0)
{
LM_DBG("subscription dialog not found for <%.*s@%.*s>\n",
subs.watcher_user.len, subs.watcher_user.s,
subs.watcher_domain.len, subs.watcher_domain.s);
if (rls_dbf.end_transaction)
{
if (rls_dbf.end_transaction(rls_db) < 0)
{
LM_ERR("in end_transaction\n");
goto error;
}
}
goto forpresence;
}
else if(rt>=400)
{
reason = (rt==400)?pu_400_rpl:stale_cseq_rpl;
if (slb.freply(msg, 400, &reason) < 0)
{
LM_ERR("while sending reply\n");
goto error;
}
if (rls_dbf.end_transaction)
{
if (rls_dbf.end_transaction(rls_db) < 0)
{
LM_ERR("in end_transaction\n");
goto error;
}
}
ret = 0;
goto stop;
}
/* if correct reply with 200 OK */
if(reply_200(msg, &subs.local_contact, subs.expires)<0)
goto error;
if (update_dialog_subscribe_rlsdb(&subs) < 0)
{
LM_ERR("while updating resource list subscription\n");
goto error;
}
if (rls_dbf.end_transaction)
{
if (rls_dbf.end_transaction(rls_db) < 0)
{
LM_ERR("in end_transaction\n");
goto error;
}
}
}
else
{
lock_get(&rls_table[hash_code].lock);
if(pres_search_shtable(rls_table, subs.callid,
subs.to_tag, subs.from_tag, hash_code)==NULL)
{
lock_release(&rls_table[hash_code].lock);
LM_DBG("subscription dialog not found for <%.*s@%.*s>\n",
subs.watcher_user.len, subs.watcher_user.s,
subs.watcher_domain.len, subs.watcher_domain.s);
goto forpresence;
}
lock_release(&rls_table[hash_code].lock);
/* if correct reply with 200 OK */
if(reply_200(msg, &subs.local_contact, subs.expires)<0)
goto error;
rt = update_rlsubs(&subs, hash_code);
if(rt<0)
{
LM_ERR("while updating resource list subscription\n");
goto error;
}
if(rt>=400)
{
reason = (rt==400)?pu_400_rpl:stale_cseq_rpl;
if (slb.freply(msg, 400, &reason) < 0)
{
LM_ERR("while sending reply\n");
goto error;
}
ret = 0;
goto stop;
}
}
if(rls_get_service_list(&subs.pres_uri, &subs.watcher_user,
&subs.watcher_domain, &service_node, &doc)<0)
{
LM_ERR("failed getting resource list\n");
goto error;
}
if(doc==NULL)
{
/* warning: no document returned?!?! */
LM_WARN("no document returned for uri <%.*s>\n",
subs.pres_uri.len, subs.pres_uri.s);
goto done;
}
}
if (dbmode != RLS_DB_ONLY)
{
/* sending notify with full state */
if(send_full_notify(&subs, service_node, &subs.pres_uri, hash_code)<0)
{
LM_ERR("failed sending full state notify\n");
goto error;
}
}
/* send subscribe requests for all in the list */
if(resource_subscriptions(&subs, service_node)< 0)
{
LM_ERR("failed sending subscribe requests to resources in list\n");
goto error;
}
if (dbmode !=RLS_DB_ONLY)
remove_expired_rlsubs(&subs, hash_code);
done:
ret = 1;
stop:
forpresence:
if(contact!=NULL)
{
if(contact->s!=NULL)
pkg_free(contact->s);
pkg_free(contact);
}
if(subs.pres_uri.s!=NULL)
pkg_free(subs.pres_uri.s);
if(subs.record_route.s!=NULL)
pkg_free(subs.record_route.s);
if(doc!=NULL)
xmlFreeDoc(doc);
if (rlsubs_did.s != NULL)
pkg_free(rlsubs_did.s);
return ret;
bad_event:
err_ret = 0;
if(reply_489(msg)<0)
{
LM_ERR("failed sending 489 reply\n");
err_ret = -1;
}
error:
LM_ERR("occured in rls_handle_subscribe\n");
if(contact!=NULL)
{
if(contact->s!=NULL)
pkg_free(contact->s);
pkg_free(contact);
}
if(subs.pres_uri.s!=NULL)
pkg_free(subs.pres_uri.s);
if(subs.record_route.s!=NULL)
pkg_free(subs.record_route.s);
if(doc!=NULL)
xmlFreeDoc(doc);
if (rlsubs_did.s != NULL)
pkg_free(rlsubs_did.s);
if (rls_dbf.abort_transaction)
{
if (rls_dbf.abort_transaction(rls_db) < 0)
LM_ERR("in abort_transaction\n");
}
return err_ret;
}
int save(struct sip_msg* _m, udomain_t* _d, int _cflags, str *_uri)
{
contact_t* c;
int st, mode;
str aor;
int ret;
sip_uri_t *u;
u = parse_to_uri(_m);
if(u==NULL)
goto error;
rerrno = R_FINE;
ret = 1;
if (parse_message(_m) < 0) {
goto error;
}
if (check_contacts(_m, &st) > 0) {
goto error;
}
if (parse_supported(_m) == 0) {
if (!(((struct supported_body *)_m->supported->parsed)->supported_all
& F_SUPPORTED_OUTBOUND) && reg_outbound_mode == REG_OUTBOUND_REQUIRE) {
LM_WARN("Outbound required by server and not supported by UAC\n");
rerrno = R_OB_UNSUP;
goto error;
}
}
get_act_time();
c = get_first_contact(_m);
if (extract_aor((_uri)?_uri:&get_to(_m)->uri, &aor, NULL) < 0) {
LM_ERR("failed to extract Address Of Record\n");
goto error;
}
mem_only = is_cflag_set(REG_SAVE_MEM_FL)?FL_MEM:FL_NONE;
if (c == 0) {
if (st) {
if (star(_m, (udomain_t*)_d, &aor, &u->host) < 0) goto error;
else ret=3;
} else {
if (no_contacts(_m, (udomain_t*)_d, &aor, &u->host) < 0) goto error;
else ret=4;
}
} else {
mode = is_cflag_set(REG_SAVE_REPL_FL)?1:0;
if ((ret=add_contacts(_m, (udomain_t*)_d, &aor, mode)) < 0)
goto error;
ret = (ret==0)?1:ret;
}
update_stat(accepted_registrations, 1);
/* Only send reply upon request, not upon reply */
if ((is_route_type(REQUEST_ROUTE)) && !is_cflag_set(REG_SAVE_NORPL_FL) && (reg_send_reply(_m) < 0))
return -1;
return ret;
error:
update_stat(rejected_registrations, 1);
if (is_route_type(REQUEST_ROUTE) && !is_cflag_set(REG_SAVE_NORPL_FL) )
reg_send_reply(_m);
return 0;
}
/*! \brief
* Allocate a memory buffer and print Contact
* header fields into it
*/
int build_contact(ucontact_t* c,struct sip_msg *_m)
{
char *p, *cp, *tmpgr;
int fl, len,grlen;
int build_gruu = 0;
struct socket_info *sock;
if (!disable_gruu && _m->supported && parse_supported(_m) == 0 &&
(get_supported(_m) & F_SUPPORTED_GRUU))
build_gruu=1;
contact.data_len = calc_buf_len(c,build_gruu,_m);
if (!contact.data_len) return 0;
if (!contact.buf || (contact.buf_len < contact.data_len)) {
if (contact.buf) pkg_free(contact.buf);
contact.buf = (char*)pkg_malloc(contact.data_len);
if (!contact.buf) {
contact.data_len = 0;
contact.buf_len = 0;
LM_ERR("no pkg memory left\n");
return -1;
} else {
contact.buf_len = contact.data_len;
}
}
p = contact.buf;
memcpy(p, CONTACT_BEGIN, CONTACT_BEGIN_LEN);
p += CONTACT_BEGIN_LEN;
fl = 0;
while(c) {
if (VALID_CONTACT(c, get_act_time())) {
if (fl) {
memcpy(p, CONTACT_SEP, CONTACT_SEP_LEN);
p += CONTACT_SEP_LEN;
} else {
fl = 1;
}
*p++ = '<';
memcpy(p, c->c.s, c->c.len);
p += c->c.len;
*p++ = '>';
len = len_q(c->q);
if (len) {
memcpy(p, Q_PARAM, Q_PARAM_LEN);
p += Q_PARAM_LEN;
memcpy(p, q2str(c->q, 0), len);
p += len;
}
memcpy(p, EXPIRES_PARAM, EXPIRES_PARAM_LEN);
p += EXPIRES_PARAM_LEN;
cp = int2str((int)(c->expires - get_act_time()), &len);
memcpy(p, cp, len);
p += len;
if (c->received.s) {
*p++ = ';';
memcpy(p, rcv_param.s, rcv_param.len);
p += rcv_param.len;
*p++ = '=';
*p++ = '\"';
memcpy(p, c->received.s, c->received.len);
p += c->received.len;
*p++ = '\"';
}
if (build_gruu && c->instance.s) {
sock = (c->sock)?(c->sock):(_m->rcv.bind_address);
/* build pub GRUU */
memcpy(p,PUB_GRUU,PUB_GRUU_SIZE);
p += PUB_GRUU_SIZE;
*p++ = '\"';
memcpy(p,SIP_PROTO,SIP_PROTO_SIZE);
p += SIP_PROTO_SIZE;
memcpy(p,c->aor->s,c->aor->len);
p += c->aor->len;
if (!reg_use_domain) {
*p++ = '@';
memcpy(p,sock->name.s,sock->name.len);
p += sock->name.len;
*p++ = ':';
memcpy(p,sock->port_no_str.s,sock->port_no_str.len);
p += sock->port_no_str.len;
}
memcpy(p,GR_PARAM,GR_PARAM_SIZE);
p += GR_PARAM_SIZE;
memcpy(p,c->instance.s+1,c->instance.len-2);
p += c->instance.len-2;
*p++ = '\"';
/* build temp GRUU */
memcpy(p,TEMP_GRUU,TEMP_GRUU_SIZE);
p += TEMP_GRUU_SIZE;
*p++ = '\"';
memcpy(p,SIP_PROTO,SIP_PROTO_SIZE);
p += SIP_PROTO_SIZE;
memcpy(p,TEMP_GRUU_HEADER,TEMP_GRUU_HEADER_SIZE);
p += TEMP_GRUU_HEADER_SIZE;
tmpgr = build_temp_gruu(c->aor,&c->instance,&c->callid,&grlen);
base64encode((unsigned char *)p,
(unsigned char *)tmpgr,grlen);
p += calc_temp_gruu_len(c->aor,&c->instance,&c->callid);
*p++ = '@';
memcpy(p,sock->name.s,sock->name.len);
p += sock->name.len;
*p++ = ':';
memcpy(p,sock->port_no_str.s,sock->port_no_str.len);
p += sock->port_no_str.len;
memcpy(p,GR_NO_VAL,GR_NO_VAL_SIZE);
p += GR_NO_VAL_SIZE;
*p++ = '\"';
/* build +sip.instance */
memcpy(p,SIP_INSTANCE,SIP_INSTANCE_SIZE);
p += SIP_INSTANCE_SIZE;
*p++ = '\"';
memcpy(p,c->instance.s+1,c->instance.len-2);
p += c->instance.len-2;
*p++ = '\"';
}
}
c = c->next;
}
memcpy(p, CRLF, CRLF_LEN);
p += CRLF_LEN;
contact.data_len = p - contact.buf;
LM_DBG("created Contact HF: %.*s\n", contact.data_len, contact.buf);
return 0;
}