checker.h File Reference

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Detailed Description

IMS Service Control - Initial Filter Criteria Checker.

Author:

Dragos Vingarzan vingarzan -at- fokus dot fraunhofer dot de

Definition in file checker.h.

#include "../scscf/ifc_datastruct.h"
#include "../../sr_module.h"

Go to the source code of this file.

Data Structures
struct	isc_match
	ISC match structure. More...
Defines
#define	MOBILE_ORIGINATED   0
	Originating case.
#define	MOBILE_TERMINATED   1
	Terminating case.
#define	MOBILE_TERMINATED_UNREGISTERED   2
	Terminating to unregistered case.
Functions
void	isc_free_match (isc_match *m)
	Free up all memory taken by a isc_match.
isc_match *	isc_checker_find (str uri, char direction, int skip, struct sip_msg *msg, int registered)
	Find the next match and fill up the ifc_match structure with the position of the match.

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Define Documentation

#define MOBILE_ORIGINATED   0

Originating case.

Definition at line 62 of file checker.h.

#define MOBILE_TERMINATED   1

Terminating case.

Definition at line 64 of file checker.h.

#define MOBILE_TERMINATED_UNREGISTERED   2

Terminating to unregistered case.

Definition at line 66 of file checker.h.

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Function Documentation

void isc_free_match

(

isc_match *

m

)

Free up all memory taken by a isc_match.

Parameters:

m

- match to deallocate

Definition at line 375 of file checker.c.

References M_NAME, isc_match::server_name, and isc_match::service_info.

Referenced by ISC_match_filter(), and ISC_match_filter_reg().

{
    if (m) {
        if (m->server_name.s) pkg_free(m->server_name.s);
        if (m->service_info.s) pkg_free(m->service_info.s);         
        pkg_free(m);
    }
    DBG("DEBUG:"M_NAME":isc_match_free: match position freed\n");
}

isc_match* isc_checker_find	(	str	uri,
		char	direction,
		int	skip,
		struct sip_msg *	msg,
		int	registered
	)

Find the next match and fill up the ifc_match structure with the position of the match.

Parameters:

	uri	- URI of the user for which to apply the IFC
	direction	- direction of the session
	skip	- how many IFCs to skip because already matched
	msg	- the SIP initial request to check on

Returns:

- TRUE if found, FALSE if none found, end of search space

Definition at line 395 of file checker.c.

References ims_service_profile::filter_criteria_cnt, scscf_binds::get_r_public, _r_public::hash, IFC_DE_REGISTRATION, IFC_INITIAL_REGISTRATION, IFC_RE_REGISTRATION, isc_get_expires(), isc_scscfb, M_NAME, ims_service_profile::public_identities, ims_service_profile::public_identities_cnt, ims_public_identity::public_identity, scscf_binds::r_unlock, _r_public::s, ims_subscription::service_profiles, and ims_subscription::wpsi.

Referenced by ISC_match_filter(), and ISC_match_filter_reg().

{
    int expires;
    char registration_type;
    str domain={0,0};
    int i,j,k,cnt,si,sj,next;
    r_public *p;
    ims_service_profile *sp;
    ims_filter_criteria *fc;
    isc_match *r;
    
    
    if (skip==0) LOG(L_INFO,"INFO:"M_NAME":isc_checker_find: starting search\n");
    else LOG(L_INFO,"INFO:"M_NAME":isc_checker_find: resuming search from %d\n",skip);

    expires = isc_get_expires(msg);
    if (!registered) registration_type = IFC_INITIAL_REGISTRATION;
    else if (expires>0) registration_type = IFC_RE_REGISTRATION;
         else registration_type = IFC_DE_REGISTRATION;
    
    /* get the user profile from the scscf module */    
    i=0;

    while(i<uri.len && uri.s[i]!='@') 
        i++;
    domain.s = uri.s+i+1;
    domain.len = uri.len - i - 1;

    p = isc_scscfb.get_r_public(uri);

    if (!p) return 0;
    LOG(L_DBG,"isc_checker_find(): got a r_public for the user %.*s\n",uri.len,uri.s);
    if (!p->s) {
        LOG(L_DBG,"isc_checker_find() : got an user without a subscription\n");
        isc_scscfb.r_unlock(p->hash);
        return 0;
    }
    
    /* find the starting fc as the skip-th one*/            
    cnt=0;
    si=0;sj=0;
    while(si<p->s->service_profiles_cnt){
        next = cnt + p->s->service_profiles[si].filter_criteria_cnt;
        if (cnt<=skip && skip<next){
            sj = skip-cnt;
            cnt += sj;
            break;
        }
        cnt = next;
        si++;
    }
    
    /* iterate through the rest and check for matches */
    i = si;
    while(i<p->s->service_profiles_cnt){
        sp = p->s->service_profiles +i;
        k=0;
        for(j=0;j<sp->public_identities_cnt;j++)
        {
            
            if (p->s->wpsi)
            {
                    // here i should regexec again!
                    // to check this , but anyway if i already got p
                    // from the get_r_public , that is already checked...
                    // or not if there is no wildcardPSI but ... then ...
                    //isc_check_wpsi_match();
                    k = 1;
                    break;  
                            
            } else {
            if (sp->public_identities[j].public_identity.len == uri.len &&
                strncasecmp(sp->public_identities[j].public_identity.s,uri.s,uri.len)==0){
                    k = 1;
                    break;
                }
            }
        }

        if (!k){/* this sp is not for this id */
            
            cnt += sp->filter_criteria_cnt;
        }else{
            
            for(j=sj;j<sp->filter_criteria_cnt;j++){
                fc = sp->filter_criteria+j;
                if (fc->profile_part_indicator){                
                    if (( (registered==IMS_USER_REGISTERED) && (*fc->profile_part_indicator))||
                        ( (registered==IMS_USER_UNREGISTERED) && !(*fc->profile_part_indicator))) {
                        DBG("DEBUG:"M_NAME":isc_checker_find: this one is not good... ppindicator wrong \n");                                           
                        cnt++;
                        continue;
                    }
                }
                
                if (isc_check_filter_criteria(fc,msg,direction,registration_type)){
                    LOG(L_INFO,"INFO:"M_NAME":isc_checker_find: MATCH -> %.*s (%.*s) handling %d \n",
                        fc->application_server.server_name.len,
                        fc->application_server.server_name.s,
                        fc->application_server.service_info.len,
                        fc->application_server.service_info.s,
                        fc->application_server.default_handling );      
                    r = isc_new_match(fc,cnt);  
                    isc_scscfb.r_unlock(p->hash);

                    return r;   
                }else{
                    cnt++;
                    continue;
                }
            }   
        }   
        i++;
        sj = 0;
    }
    isc_scscfb.r_unlock(p->hash);

    return 0;
}

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