[Freeswitch-users] Advise on FS core dump

[Stephen Wilde]

Can you try to change the allocation of cmd as:

   char cmd[100];

....

strcat(cmd, "check_billing_before_answer ");

strcat(cmd, in_username);

strcat(cmd, " ");


....

On Mon, Oct 24, 2011 at 10:39 AM, fieldpeak <fieldpeak at gmail.com> wrote:

> Hi Friends,
>
> i'm using mod_nibblebill for billing on FS, i bundled event processing
> fucntions when status change,
> e.g. /* on_routing */ check_billing_before_routing,
> and * on_hangup */ process_hangup, as below,
> however, i found if i make a call containing two-legs e.g. user 1001 call
> user 1002, then the FS core dump. but if i only make one leg call, e.g. call
> 888 for IVR, then no problem occure, i found the problem within function
> "check_billing_before_routing" (because once i comment all of lines within
> this func, the core did not dump). below is the func
> "check_billing_before_routing", can anyone help advise what's wrong? how
> should i correct it, thanks.
>
> static switch_status_t check_billing_before_routing(switch_core_session_t
> *session)
> {
>     //charles, check billing before routing the call
>
>     char buf[128];
>     char cmd[100] = "check_billing_before_answer";
>     FILE *pp = NULL;
>
>     const char* in_username = NULL;
>     const char* in_calledstation = NULL;
>     const char* in_uniqueid = NULL;
>     const char* in_network_addr = NULL;
>     const char* in_type = "9";
>     int is_b;
>
>     //const char* full_cmd;
>     int i_continue = 1;
>     switch_channel_t *channel = NULL;
>
>
>     in_uniqueid = switch_core_session_get_uuid(session);
>
>     channel = switch_core_session_get_channel(session);
>
>     /*only billing on a leg*/
>     is_b = channel &&
> switch_channel_get_originator_caller_profile(channel);
>     printf("is_b is: %d\n", is_b);
>     if(is_b)
>     {
>     return SWITCH_STATUS_SUCCESS;
>     }
>
>     /* Lock this session's data for this module while we tinker with it */
>     if (globals.mutex) {
>         switch_mutex_lock(globals.mutex);
>     }
>
>
>     in_username = switch_channel_get_variable(channel, "caller_id_number");
>     in_calledstation = switch_channel_get_variable(channel,
> "destination_number");
>     in_network_addr = switch_channel_get_variable(channel, "network_addr");
>
>
>     /* Done checking - release lock */
>     if (globals.mutex) {
>         switch_mutex_unlock(globals.mutex);
>     }
>
>
>     switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO,
> "check_billing_before_routing, in_username: %s, in_calledstation: %s,
> in_uniqueid: %s in_type: %s, in_network_addr: %s \n", in_username,
> in_calledstation, in_uniqueid, in_type, in_network_addr);
>
>
>     strcat(cmd, " ");
>     strcat(cmd, in_username);
>     strcat(cmd, " ");
>     strcat(cmd, in_calledstation);
>     strcat(cmd, " ");
>     strcat(cmd, in_uniqueid);
>     strcat(cmd, " ");
>     strcat(cmd, in_type);
>     strcat(cmd, " ");
>     strcat(cmd, in_network_addr);
>
>     printf("excute external cmd: ");
>     printf(cmd);
>     printf("\n");
>
>     if( (pp = popen(cmd, "r")) == NULL )
>     {
>         printf("popen() error!\n");
>         exit(1);
>     }
>
>     while(fgets(buf, sizeof buf, pp))
>     {
>         printf("the result of excuting external cmd: %s", buf);
>     }
>
>     if(pp)
>     {
>         pclose(pp);
>     }
>
>     i_continue =  atoi(buf);
>
>     printf("i_continue: %d", i_continue);
>
>
>     if (!i_continue) {
>
>         switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session),
> SWITCH_LOG_INFO, "call was not authorized to continue \n");
>
>         transfer_call(session, globals.nobal_action);
>     }
>
>
>
>
>     return SWITCH_STATUS_SUCCESS;
>
> }
>
>
> Core dump logs:
>
> freeswitch at freeswitch> 2011-10-24 16:30:26.583369 [NOTICE]
> mod_xml_rpc.c:969 Starting HTTP Port 8787, DocRoot
> [/usr/local/freeswitch/htdocs]
> 2011-10-24 16:30:29.454743 [WARNING] sofia_reg.c:1337 SIP auth challenge
> (INVITE) on sofia profile 'internal' for [6628 at 224.193.106.204] from ip
> 223.128.70.10
> 2011-10-24 16:30:30.254710 [NOTICE] switch_channel.c:897 New Channel
> sofia/internal/8068 at 224.193.106.204 [196a50b8-eaa0-4ef0-a674-18602117f5ec]
> is_b is: 0
> excute external cmd: check_billing_before_answer 8068 6628
> 196a50b8-eaa0-4ef0-a674-18602117f5ec 9 223.128.70.10
> 2011-10-24 16:30:30.254710 [INFO] mod_nibblebill.c:1017
> check_billing_before_routing, in_username: 8068, in_calledstation: 6628,
> in_uniqueid: 196a50b8-eaa0-4ef0-a674-18602117f5ec in_type: 9,
> in_network_addr: 223.128.70.10
> the result of excuting external cmd:
> the result of excuting external cmd: 60
> Segmentation fault (core dumped)
> [root at freeswitch bin]#
>
> --
> Regards,
> Charles
>
>
>
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