/*
* This mid-dialog request callback ensures that any extra/leg settings done
* at script level before dialog matching is performed will get properly
* transferred into the dialog context, once the dialog is matched
*/
static void acc_merge_contexts(struct dlg_cell *dlg, int type,
struct dlg_cb_params *_params)
{
acc_ctx_t *ctx;
/* if there is already a acc context in the processing
* context, be sure to destroy it for now */
if ((ctx = ACC_GET_CTX())) {
push_ctx_to_ctx( ctx, (acc_ctx_t *)(*_params->param));
acc_unref(ctx); /* unref it now beause it will disapear from local ctx */
}
ctx = (acc_ctx_t *)(*_params->param);
acc_ref(ctx);
ACC_PUT_CTX(ctx);
}
static void acc_dlg_ctx_cb(struct dlg_cell *dlg, int type,
struct dlg_cb_params *_params)
{
acc_ctx_t *ctx;
/* set the acc context from dialog into the
* current processing context */
/* if there is already a acc context in the processing
* context, be sure to destroy it for now */
if ( (ctx=ACC_GET_CTX)!=NULL) {
push_ctx_to_ctx( ctx, (acc_ctx_t *)(*_params->param));
acc_unref(ctx); /* unref it now beause it will disapear from local ctx */
}
ctx = (acc_ctx_t *)(*_params->param);
acc_ref(ctx);
ACC_PUT_CTX(ctx);
}
static void acc_dlg_ended(struct dlg_cell *dlg, int type,
struct dlg_cb_params *_params)
{
struct cell* t;
acc_ctx_t* ctx;
if (!_params) {
LM_ERR("not enough info\n");
return;
}
/* resolve local/dlg ctx conflict by merging them together */
acc_merge_contexts(dlg, type, _params);
ctx = (acc_ctx_t *)(*_params->param);
/*
* this way we "enable" the refcount
* if opensips shuts down before dialog terminated then the refcount
* won't be enabled
*/
if (was_dlg_cb_used(ctx->flags)) {
LM_INFO("CDR callback already registered [%p|%u] - do not run it again!\n",
*_params->param, ctx->ref_no);
return;
}
set_dlg_cb_used(ctx->flags);
/* this time will be used to set */
gettimeofday(&ctx->bye_time, NULL);
/* if it's not a local transaction we do the accounting on the tm callbacks */
if (((t=tmb.t_gett()) == T_UNDEFINED) || !t ||
!tmb.t_is_local(_params->msg)) {
/* normal dialogs will have to do accounting when the response for
* the bye will come since users should be able to populate extra
* vars and leg vars */
acc_ref(ctx);
if (tmb.register_tmcb( _params->msg, NULL,
TMCB_RESPONSE_OUT, acc_cdr_cb, ctx, unref_acc_ctx) < 0) {
acc_unref(ctx);
LM_ERR("failed to register cdr callback!\n");
return;
}
/* for local transactions we do the accounting here since all the messages
* have been processed */
} else {
/* expired dialogs will be handled here */
if (is_log_acc_on(ctx->flags)) {
env_set_text( ACC_ENDED, ACC_ENDED_LEN);
if (acc_log_cdrs(dlg, _params->msg, ctx) < 0) {
LM_ERR("Cannot log values\n");
return;
}
}
if (is_db_acc_on(ctx->flags)) {
env_set_text( db_table_acc.s, db_table_acc.len);
if (acc_db_cdrs(dlg, _params->msg, ctx) < 0) {
LM_ERR("Cannot insert into database\n");
return;
}
}
if (is_aaa_acc_on(ctx->flags) && acc_aaa_cdrs(dlg, _params->msg, ctx) < 0) {
LM_ERR("Cannot create radius accounting\n");
return;
}
if (is_evi_acc_on(ctx->flags)) {
env_set_event(acc_cdr_event);
if (acc_evi_cdrs(dlg, _params->msg, ctx) < 0) {
LM_ERR("cannot send accounting events\n");
return;
}
}
}
}
/* initiate a report if we previously enabled accounting for this t */
static inline void acc_onreply( struct cell* t, struct sip_msg *req,
struct sip_msg *reply, int code, acc_ctx_t* ctx)
{
str new_uri_bk;
str dst_uri_bk;
struct dlg_cell *dlg = NULL;
str ctx_s;
str table;
unsigned long long* flags = &ctx->flags;
/* acc_onreply is bound to TMCB_REPLY which may be called
from _reply, like when FR hits; we should not miss this
event for missed calls either */
if (is_invite(t) && code>=300 && is_mc_acc_on(*flags) ) {
on_missed(t, req, reply, code, ctx);
}
if (!should_acc_reply(req, reply, code, flags))
return;
/* for reply processing, set as new_uri the winning branch */
if (t->relaied_reply_branch>=0) {
new_uri_bk = req->new_uri;
dst_uri_bk = req->dst_uri;
req->new_uri = t->uac[t->relaied_reply_branch].uri;
req->dst_uri = t->uac[t->relaied_reply_branch].duri;
req->parsed_uri_ok = 0;
} else {
new_uri_bk.len = dst_uri_bk.len = -1;
new_uri_bk.s = dst_uri_bk.s = NULL;
}
/* set env variables */
env_set_to( get_rpl_to(t,reply) );
env_set_code_status( code, reply);
/* search for table avp */
if (is_db_acc_on(ctx->flags))
table = ctx->acc_table;
else {
table.s = 0;
table.len = 0;
}
if (is_invite(t) && !has_totag(req) && is_cdr_acc_on(ctx->flags) &&
code >= 200 && code < 300 && (dlg=dlg_api.get_dlg()) != NULL) {
/* if dialog module loaded and INVITE and success reply */
if (store_core_leg_values(dlg, req) < 0) {
LM_ERR("cannot store core and leg values\n");
goto restore;
}
ctx_s.s = (char*)&ctx;
ctx_s.len = sizeof(acc_ctx_t *);
/* store context pointer into dialog */
if (dlg_api.store_dlg_value(dlg, &acc_ctx_str, &ctx_s) < 0) {
LM_ERR("cannot store context pointer into dlg val!\n");
goto restore;
}
/* register callback for program shutdown or dialog replication
* won't register free function since TERMINATED|EXPIRED callback
* free function will be called to free */
if (dlg_api.register_dlgcb(dlg, DLGCB_WRITE_VP,
acc_dlg_onwrite, ctx, NULL) != 0) {
LM_ERR("cannot register callback for context serialization\n");
goto restore;
}
/* register database callbacks */
acc_ref_ex(ctx, 2);
if (dlg_api.register_dlgcb(dlg, DLGCB_TERMINATED|DLGCB_EXPIRED,
acc_dlg_ended, ctx, unref_acc_ctx) != 0) {
acc_unref_ex(ctx, 2);
LM_ERR("cannot register callback for database accounting\n");
goto restore;
}
/* register dlg callbacks for ctx management */
if (dlg_api.register_dlgcb(dlg, DLGCB_REQ_WITHIN,
acc_merge_contexts, ctx, unref_acc_ctx) != 0) {
acc_unref(ctx); /* only one, the other one was successful */
LM_ERR("cannot register callback ctx management\n");
goto restore;
}
} else {
/* do old accounting */
if ( is_evi_acc_on(*flags) ) {
env_set_event(acc_event);
acc_evi_request( req, reply, 0 );
}
if ( is_log_acc_on(*flags) ) {
env_set_text( ACC_ANSWERED, ACC_ANSWERED_LEN);
acc_log_request( req, reply, 0 );
}
if (is_aaa_acc_on(*flags))
acc_aaa_request( req, reply, 0 );
if (is_db_acc_on(*flags)) {
env_set_text( table.s, table.len);
acc_db_request( req, reply, &acc_ins_list, 0);
}
}
restore:
if (new_uri_bk.len>=0) {
req->new_uri = new_uri_bk;
req->dst_uri = dst_uri_bk;
req->parsed_uri_ok = 0;
}
}
/* restore callbacks */
void acc_loaded_callback(struct dlg_cell *dlg, int type,
struct dlg_cb_params *_params) {
str flags_s, ctx_s, table_s, created_s;
acc_ctx_t* ctx;
time_t created;
unsigned long long flags;
if (!dlg) {
LM_ERR("null dialog - cannot fetch message flags\n");
return;
}
flags_s.s = (char *)&flags;
flags_s.len = sizeof(flags);
if (dlg_api.fetch_dlg_value(dlg, &flags_str, &flags_s, 1) < 0) {
LM_DBG("flags were not saved in dialog\n");
return;
}
created_s.s = (char *)&created;
created_s.len = sizeof(created);
if (dlg_api.fetch_dlg_value(dlg, &created_str, &created_s, 1) < 0) {
LM_DBG("created time was not saved in dialog\n");
return;
}
/**
* restore acc extra context(extra and leg values)
*/
if (restore_dlg_extra(dlg, &ctx)) {
LM_ERR("failed to rebuild acc context!\n");
return;
}
/* copy flags value into the context */
ctx->flags = flags;
/* copy created value into the context */
ctx->created = created;
/* restore accounting table if db accounting is used */
if (is_db_acc_on(ctx->flags)) {
if (dlg_api.fetch_dlg_value(dlg, &table_str, &table_s, 0) < 0) {
LM_DBG("table was not saved in dialog\n");
return;
}
if ((ctx->acc_table.s=shm_malloc(table_s.len)) == NULL) {
LM_ERR("no more shm!\n");
return;
}
memcpy(ctx->acc_table.s, table_s.s, table_s.len);
ctx->acc_table.len = table_s.len;
}
/* replace the context value with a good pointer */
ctx_s.s = (char *)&ctx;
ctx_s.len = sizeof(acc_ctx_t *);
if (dlg_api.store_dlg_value(dlg, &acc_ctx_str, &ctx_s) < 0) {
LM_ERR("failed to set new context value!\n");
return;
}
/* register database callbacks */
acc_ref_ex(ctx, 2);
if (dlg_api.register_dlgcb(dlg, DLGCB_TERMINATED |
DLGCB_EXPIRED, acc_dlg_ended, ctx, unref_acc_ctx)){
LM_ERR("cannot register callback for database accounting\n");
acc_unref_ex(ctx, 2);
return;
}
/* register dlg callbacks for ctx management */
if (dlg_api.register_dlgcb(dlg, DLGCB_REQ_WITHIN,
acc_merge_contexts, ctx, unref_acc_ctx) != 0) {
acc_unref(ctx); /* only one, the other one was successful */
LM_ERR("cannot register callback ctx management\n");
return;
}
}
int w_do_acc_3(struct sip_msg* msg, char* type_p, char* flags_p, char* table_p)
{
unsigned long long type=0, flags=0;
unsigned long long flag_mask;
acc_ctx_t* acc_ctx;
acc_type_param_t* acc_param;
str in;
str table_name;
int tmcb_types;
int is_invite;
if (type_p == NULL) {
LM_ERR("accounting type is mandatory!\n");
return -1;
}
if (!msg) {
LM_ERR("no SIP message\n");
return -1;
}
if (skip_cancel(msg)) {
LM_WARN("do_accounting() called on CANCEL but 'report_cancels' modparam"
" not set - no accounting will be done for this transaction!\n");
return 1;
}
acc_param = (acc_type_param_t *)type_p;
if (acc_param->t == DO_ACC_PARAM_TYPE_VALUE) {
type = acc_param->u.ival;
} else {
if (pv_printf_s(msg, acc_param->u.pval, &in) < 0) {
LM_ERR("failed to fetch type value!\n");
return -1;
}
if ((type=do_acc_parse(&in, do_acc_type_parser)) == DO_ACC_ERR) {
LM_ERR("Invalid expression <%.*s> for acc type!\n", in.len, in.s);
return -1;
}
}
if (table_p != NULL) {
if (fixup_get_svalue(msg, (gparam_p)table_p, &table_name) < 0) {
LM_ERR("failed to fetch table name!\n");
return -1;
}
}
if (flags_p != NULL) {
flags= *(unsigned long long*)flags_p;
}
flag_mask = type + type * flags;
if (is_cdr_acc_on(flag_mask)) {
/* setting this flag will allow us to register everything
* that is needed for CDR accounting only once */
set_cdr_values_registered(flag_mask);
}
/* is it the first time when the function was called ? */
acc_ctx = try_fetch_ctx();
/* we go in here only if do_accounting function was called before;
* if accounting context is null or it's created but flags value is
* 0(meaning that context was created from somewhere else but do_accounting
* wasn't called) then we need to jump over this and register
* all the callbacks we need */
if (acc_ctx != NULL && acc_ctx->flags != 0) {
/* do_accounting already called once */
/* first check if the accounting table changed */
if (is_db_acc_on(flag_mask) &&
(table_p != NULL || ZSTR(acc_ctx->acc_table))) {
if (table_p == NULL) {
table_name = db_table_acc;
}
if (store_acc_table( acc_ctx, &table_name) < 0) {
LM_ERR("failed to store acc table!\n");
return -1;
}
}
if (!cdr_values_registered(acc_ctx->flags) &&
cdr_values_registered(flag_mask)) {
/* CDR support requested for the first time, we need to create
* the dialog support, if an initial INVITE */
if (!has_totag(msg)) {
acc_ctx->created = time(NULL);
if (msg->REQ_METHOD == METHOD_INVITE && create_acc_dlg(msg) < 0) {
LM_ERR("cannot use dialog accounting module\n");
return -1;
}
}
}
/* if it's the first time the missed calls flag was used register the callback */
if (is_mc_acc_on(flag_mask) && !failure_cb_registered(acc_ctx->flags)) {
acc_ref(acc_ctx);
if (tmb.register_tmcb( msg, 0, TMCB_ON_FAILURE, tmcb_func,
acc_ctx, unref_acc_ctx)<=0) {
LM_ERR("cannot register missed calls callback\n");
acc_unref(acc_ctx);
return -1;
}
/* don't allow the callback to be registered agian in the future */
set_failure_cb_registered(acc_ctx->flags);
}
acc_ctx->flags |= flag_mask;
return 1;
}
/* initialize accounting context if not created before */
if (acc_ctx == NULL && init_acc_ctx(&acc_ctx) < 0) {
LM_ERR("failed to create accounting context!\n");
return -1;
}
/* move acc table in context if we have database accounting */
if (is_db_acc_on(flag_mask)) {
if (table_p == NULL) {
table_name = db_table_acc;
}
if (store_acc_table( acc_ctx, &table_name) < 0) {
LM_ERR("failed to store acc table!\n");
return -1;
}
}
/*
* the first bit in each byte will just tell that we want that type of
* accounting
* next bits will tell extra options for that type of accounting
* so we keep the first bits in each byte and on the following positions
* next flags
*/
acc_ctx->flags = flag_mask;
if (is_acc_on(acc_ctx->flags) || is_mc_acc_on(acc_ctx->flags)) {
/* do some parsing in advance */
if (acc_preparse_req(msg)<0)
return -1;
is_invite = (msg->REQ_METHOD==METHOD_INVITE)?1:0;
/* install additional handlers */
tmcb_types =
/* report on completed transactions */
TMCB_RESPONSE_IN|TMCB_RESPONSE_OUT;
if (is_invite && is_mc_acc_on(acc_ctx->flags)) {
/* register it manually; see explanation below
* get incoming replies ready for processing */
/* TMCB_RESPONSE_OUT | */
/* report on missed calls */
tmcb_types |= TMCB_ON_FAILURE;
/* the flag will help on further do_accounting calls to know
* not to register the callback twice */
set_failure_cb_registered(acc_ctx->flags);
}
/* if cdr accounting is enabled */
if (is_cdr_acc_on(acc_ctx->flags) && !has_totag(msg)) {
acc_ctx->created = time(NULL);
if (is_invite && create_acc_dlg(msg) < 0) {
LM_ERR("cannot use dialog accounting module\n");
return -1;
}
}
acc_ref(acc_ctx);
if (tmb.register_tmcb( msg, 0, tmcb_types, tmcb_func,
acc_ctx, unref_acc_ctx)<=0) {
LM_ERR("cannot register additional callbacks\n");
acc_unref(acc_ctx);
return -1;
}
/* if required, determine request direction */
if( detect_direction && !rrb.is_direction(msg,RR_FLOW_UPSTREAM) ) {
LM_DBG("detected an UPSTREAM req -> flaging it\n");
msg->msg_flags |= FL_REQ_UPSTREAM;
}
}
return 1;
}
void unref_acc_ctx(void *ctx)
{
acc_unref((acc_ctx_t *)ctx);
}
