Can you try to change the allocation of cmd as:<div><br></div><div><span style="font-family:arial, sans-serif;font-size:medium"><table cellpadding="0" style="padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;border-collapse:collapse;background-color:rgb(255, 255, 255);width:1248px;background-repeat:initial initial">

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<div>char cmd[100];</div><div><br></div><div>....</div><div><br></div><div>
<p style="margin:0.0px 0.0px 0.0px 0.0px;font:13.0px Arial"></p><p style="margin: 0.0px 0.0px 0.0px 0.0px; font: 13.0px Arial">strcat(cmd, &quot;check_billing_before_answer &quot;);</p><p></p>
<p style="margin:0.0px 0.0px 0.0px 0.0px;font:13.0px Arial">strcat(cmd, in_username);</p>
<p style="margin:0.0px 0.0px 0.0px 0.0px;font:13.0px Arial">strcat(cmd, &quot; &quot;);</p><p style="margin:0.0px 0.0px 0.0px 0.0px;font:13.0px Arial"><br></p><p style="margin:0.0px 0.0px 0.0px 0.0px;font:13.0px Arial">....</p>
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</span></font><div class="gmail_quote">On Mon, Oct 24, 2011 at 10:39 AM, fieldpeak <span dir="ltr">&lt;<a href="mailto:fieldpeak@gmail.com" target="_blank">fieldpeak@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

Hi Friends,<br><br>i&#39;m using mod_nibblebill for billing on FS, i bundled event processing<br>fucntions when status change,<br>e.g. /* on_routing */ check_billing_before_routing,<br>and * on_hangup */ process_hangup, as below,<br>


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 &quot;check_billing_before_routing&quot; (because once i comment all of lines within this func, the core did not dump). below is the func &quot;check_billing_before_routing&quot;, can anyone help advise what&#39;s wrong? how should i correct it, thanks.<br>


<br>static switch_status_t check_billing_before_routing(switch_core_session_t *session)<br>{<br>    //charles, check billing before routing the call<br>    <br>    char buf[128];<br>    char cmd[100] = &quot;check_billing_before_answer&quot;;<br>


    FILE *pp = NULL;<br><br>    const char* in_username = NULL;<br>    const char* in_calledstation = NULL;<br>    const char* in_uniqueid = NULL;<br>    const char* in_network_addr = NULL;<br>    const char* in_type = &quot;9&quot;;<br>


    int is_b;<br>    <br>    //const char* full_cmd;<br>    int i_continue = 1;<br>    switch_channel_t *channel = NULL;<br><br><br>    in_uniqueid = switch_core_session_get_uuid(session);<br>    <br>    channel = switch_core_session_get_channel(session);<br>


<br>    /*only billing on a leg*/<br>    is_b = channel &amp;&amp; switch_channel_get_originator_caller_profile(channel);<br>    printf(&quot;is_b is: %d\n&quot;, is_b);<br>    if(is_b)<br>    {<br>    return SWITCH_STATUS_SUCCESS;<br>


    }<br><br>    /* Lock this session&#39;s data for this module while we tinker with it */<br>    if (globals.mutex) {<br>        switch_mutex_lock(globals.mutex);<br>    }<br>    <br>    <br>    in_username = switch_channel_get_variable(channel, &quot;caller_id_number&quot;);<br>


    in_calledstation = switch_channel_get_variable(channel, &quot;destination_number&quot;);<br>    in_network_addr = switch_channel_get_variable(channel, &quot;network_addr&quot;);<br><br>    <br>    /* Done checking - release lock */<br>


    if (globals.mutex) {<br>        switch_mutex_unlock(globals.mutex);<br>    }<br>    <br><br>    switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, &quot;check_billing_before_routing, in_username: %s, in_calledstation: %s, in_uniqueid: %s in_type: %s, in_network_addr: %s \n&quot;, in_username, in_calledstation, in_uniqueid, in_type, in_network_addr);<br>


    <br><br>    strcat(cmd, &quot; &quot;);<br>    strcat(cmd, in_username);<br>    strcat(cmd, &quot; &quot;);<br>    strcat(cmd, in_calledstation);<br>    strcat(cmd, &quot; &quot;);<br>    strcat(cmd, in_uniqueid);<br>


    strcat(cmd, &quot; &quot;);<br>    strcat(cmd, in_type);<br>    strcat(cmd, &quot; &quot;);<br>    strcat(cmd, in_network_addr);<br><br>    printf(&quot;excute external cmd: &quot;);<br>    printf(cmd);<br>    printf(&quot;\n&quot;);<br>


<br>    if( (pp = popen(cmd, &quot;r&quot;)) == NULL )<br>    {<br>        printf(&quot;popen() error!\n&quot;);<br>        exit(1);<br>    }<br><br>    while(fgets(buf, sizeof buf, pp))<br>    {<br>        printf(&quot;the result of excuting external cmd: %s&quot;, buf);<br>


    }<br><br>    if(pp)<br>    {<br>        pclose(pp); <br>    }<br><br>    i_continue =  atoi(buf);<br><br>    printf(&quot;i_continue: %d&quot;, i_continue);<br><br><br>    if (!i_continue) {<br>        <br>        switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_INFO, &quot;call was not authorized to continue \n&quot;);<br>


    <br>        transfer_call(session, globals.nobal_action);<br>    }<br><br>    <br><br><br>    return SWITCH_STATUS_SUCCESS;<br><br>}<br><br><br><span style="background-color:rgb(255, 255, 51)">Core dump logs:</span><br>


<br>freeswitch@freeswitch&gt; 2011-10-24 16:30:26.583369 [NOTICE] mod_xml_rpc.c:969 Starting HTTP Port 8787, DocRoot [/usr/local/freeswitch/htdocs]<br>2011-10-24 16:30:29.454743 [WARNING] sofia_reg.c:1337 SIP auth challenge (INVITE) on sofia profile &#39;internal&#39; for [<a href="mailto:6628@224.193.106.204" target="_blank">6628@224.193.106.204</a>] from ip 223.128.70.10<br>


2011-10-24 16:30:30.254710 [NOTICE] switch_channel.c:897 New Channel sofia/internal/<a href="mailto:8068@224.193.106.204" target="_blank">8068@224.193.106.204</a> [196a50b8-eaa0-4ef0-a674-18602117f5ec]<br>is_b is: 0<br>excute external cmd: check_billing_before_answer 8068 6628 196a50b8-eaa0-4ef0-a674-18602117f5ec 9 223.128.70.10<br>


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 <br>


the result of excuting external cmd: <br>the result of excuting external cmd: 60<br>Segmentation fault (core dumped)<br>[root@freeswitch bin]# <br><font color="#888888"><br>-- <br>Regards,<br>Charles<br><br>
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<br></blockquote></div><br></div>