This patch is the initial push to update Asterisk's CDR engine for the new bridging framework. This patch guts the existing CDR engine and builds the new on top of messages coming across Stasis. As changes in channel state and bridge state are detected, CDRs are built and dispatched accordingly. This fundamentally changes CDRs in a few ways. (1) CDRs are now *very* reflective of the actual state of channels and bridges. This means CDRs track well with what an actual channel is doing - which is useful in transfer scenarios (which were previously difficult to pin down). It does, however, mean that CDRs cannot be 'fooled'. Previous behavior in Asterisk allowed for CDR applications, channels, and other properties to be spoofed in parts of the code - this no longer works. (2) CDRs have defined behavior in multi-party scenarios. This behavior will not be what everyone wants, but it is a defined behavior and as such, it is predictable. (3) The CDR manipulation functions and applications have been overhauled. Major changes have been made to ResetCDR and ForkCDR in particular. Many of the options for these two applications no longer made any sense with the new framework and the (slightly) more immutable nature of CDRs. There are a plethora of other changes. For a full description of CDR behavior, see the CDR specification on the Asterisk wiki. (closes issue ASTERISK-21196) Review: https://reviewboard.asterisk.org/r/2486/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@391947 65c4cc65-6c06-0410-ace0-fbb531ad65f3
420 lines
13 KiB
C
420 lines
13 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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*
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* Made only slightly more sane by Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief DISA -- Direct Inward System Access Application
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*
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* \author Jim Dixon <jim@lambdatel.com>
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*
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* \ingroup applications
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <math.h>
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#include <sys/time.h>
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#include "asterisk/lock.h"
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#include "asterisk/file.h"
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#include "asterisk/channel.h"
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#include "asterisk/app.h"
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#include "asterisk/indications.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/translate.h"
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#include "asterisk/ulaw.h"
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#include "asterisk/callerid.h"
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#include "asterisk/stringfields.h"
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/*** DOCUMENTATION
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<application name="DISA" language="en_US">
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<synopsis>
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Direct Inward System Access.
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</synopsis>
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<syntax>
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<parameter name="passcode|filename" required="true">
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<para>If you need to present a DISA dialtone without entering a password,
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simply set <replaceable>passcode</replaceable> to <literal>no-password</literal></para>
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<para>You may specified a <replaceable>filename</replaceable> instead of a
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<replaceable>passcode</replaceable>, this filename must contain individual passcodes</para>
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</parameter>
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<parameter name="context">
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<para>Specifies the dialplan context in which the user-entered extension
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will be matched. If no context is specified, the DISA application defaults
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to the <literal>disa</literal> context. Presumably a normal system will have a special
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context set up for DISA use with some or a lot of restrictions.</para>
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</parameter>
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<parameter name="cid">
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<para>Specifies a new (different) callerid to be used for this call.</para>
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</parameter>
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<parameter name="mailbox" argsep="@">
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<para>Will cause a stutter-dialtone (indication <emphasis>dialrecall</emphasis>)
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to be used, if the specified mailbox contains any new messages.</para>
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<argument name="mailbox" required="true" />
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<argument name="context" required="false" />
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</parameter>
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<parameter name="options">
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<optionlist>
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<option name="n">
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<para>The DISA application will not answer initially.</para>
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</option>
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<option name="p">
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<para>The extension entered will be considered complete when a <literal>#</literal>
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is entered.</para>
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</option>
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</optionlist>
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</parameter>
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</syntax>
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<description>
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<para>The DISA, Direct Inward System Access, application allows someone from
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outside the telephone switch (PBX) to obtain an <emphasis>internal</emphasis> system
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dialtone and to place calls from it as if they were placing a call from
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within the switch.
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DISA plays a dialtone. The user enters their numeric passcode, followed by
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the pound sign <literal>#</literal>. If the passcode is correct, the user is then given
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system dialtone within <replaceable>context</replaceable> on which a call may be placed.
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If the user enters an invalid extension and extension <literal>i</literal> exists in the specified
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<replaceable>context</replaceable>, it will be used.
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</para>
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<para>Be aware that using this may compromise the security of your PBX.</para>
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<para>The arguments to this application (in <filename>extensions.conf</filename>) allow either
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specification of a single global <replaceable>passcode</replaceable> (that everyone uses), or
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individual passcodes contained in a file (<replaceable>filename</replaceable>).</para>
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<para>The file that contains the passcodes (if used) allows a complete
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specification of all of the same arguments available on the command
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line, with the sole exception of the options. The file may contain blank
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lines, or comments starting with <literal>#</literal> or <literal>;</literal>.</para>
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</description>
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<see-also>
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<ref type="application">Authenticate</ref>
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<ref type="application">VMAuthenticate</ref>
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</see-also>
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</application>
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***/
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static const char app[] = "DISA";
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enum {
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NOANSWER_FLAG = (1 << 0),
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POUND_TO_END_FLAG = (1 << 1),
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};
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AST_APP_OPTIONS(app_opts, {
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AST_APP_OPTION('n', NOANSWER_FLAG),
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AST_APP_OPTION('p', POUND_TO_END_FLAG),
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});
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static void play_dialtone(struct ast_channel *chan, char *mailbox)
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{
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struct ast_tone_zone_sound *ts = NULL;
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if (ast_app_has_voicemail(mailbox, NULL)) {
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ts = ast_get_indication_tone(ast_channel_zone(chan), "dialrecall");
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} else {
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ts = ast_get_indication_tone(ast_channel_zone(chan), "dial");
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}
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if (ts) {
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ast_playtones_start(chan, 0, ts->data, 0);
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ts = ast_tone_zone_sound_unref(ts);
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} else {
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ast_tonepair_start(chan, 350, 440, 0, 0);
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}
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}
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static int disa_exec(struct ast_channel *chan, const char *data)
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{
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int i = 0, j, k = 0, did_ignore = 0, special_noanswer = 0;
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int firstdigittimeout = (ast_channel_pbx(chan) ? ast_channel_pbx(chan)->rtimeoutms : 20000);
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int digittimeout = (ast_channel_pbx(chan) ? ast_channel_pbx(chan)->dtimeoutms : 10000);
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struct ast_flags flags;
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char *tmp, exten[AST_MAX_EXTENSION] = "", acctcode[20]="";
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char pwline[256];
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char ourcidname[256],ourcidnum[256];
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struct ast_frame *f;
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struct timeval lastdigittime;
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int res;
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FILE *fp;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(passcode);
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AST_APP_ARG(context);
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AST_APP_ARG(cid);
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AST_APP_ARG(mailbox);
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AST_APP_ARG(options);
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);
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "DISA requires an argument (passcode/passcode file)\n");
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return -1;
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}
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ast_debug(1, "Digittimeout: %d\n", digittimeout);
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ast_debug(1, "Responsetimeout: %d\n", firstdigittimeout);
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tmp = ast_strdupa(data);
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AST_STANDARD_APP_ARGS(args, tmp);
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if (ast_strlen_zero(args.context))
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args.context = "disa";
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if (ast_strlen_zero(args.mailbox))
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args.mailbox = "";
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if (!ast_strlen_zero(args.options)) {
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ast_app_parse_options(app_opts, &flags, NULL, args.options);
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} else {
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/* Coverity - This uninit_use should be ignored since this macro initializes the flags */
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ast_clear_flag(&flags, AST_FLAGS_ALL);
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}
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ast_debug(1, "Mailbox: %s\n",args.mailbox);
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if (!ast_test_flag(&flags, NOANSWER_FLAG)) {
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if (ast_channel_state(chan) != AST_STATE_UP) {
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/* answer */
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ast_answer(chan);
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}
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} else special_noanswer = 1;
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ast_debug(1, "Context: %s\n",args.context);
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if (!strcasecmp(args.passcode, "no-password")) {
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k |= 1; /* We have the password */
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ast_debug(1, "DISA no-password login success\n");
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}
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lastdigittime = ast_tvnow();
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play_dialtone(chan, args.mailbox);
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ast_set_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY);
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for (;;) {
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/* if outa time, give em reorder */
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if (ast_tvdiff_ms(ast_tvnow(), lastdigittime) > ((k&2) ? digittimeout : firstdigittimeout)) {
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ast_debug(1,"DISA %s entry timeout on chan %s\n",
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((k&1) ? "extension" : "password"),ast_channel_name(chan));
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break;
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}
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if ((res = ast_waitfor(chan, -1)) < 0) {
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ast_debug(1, "Waitfor returned %d\n", res);
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continue;
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}
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if (!(f = ast_read(chan))) {
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ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY);
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return -1;
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}
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if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass.integer == AST_CONTROL_HANGUP)) {
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if (f->data.uint32)
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ast_channel_hangupcause_set(chan, f->data.uint32);
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ast_frfree(f);
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ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY);
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return -1;
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}
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/* If the frame coming in is not DTMF, just drop it and continue */
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if (f->frametype != AST_FRAME_DTMF) {
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ast_frfree(f);
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continue;
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}
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j = f->subclass.integer; /* save digit */
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ast_frfree(f);
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if (!i) {
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k |= 2; /* We have the first digit */
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ast_playtones_stop(chan);
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}
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lastdigittime = ast_tvnow();
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/* got a DTMF tone */
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if (i < AST_MAX_EXTENSION) { /* if still valid number of digits */
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if (!(k&1)) { /* if in password state */
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if (j == '#') { /* end of password */
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/* see if this is an integer */
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if (sscanf(args.passcode,"%30d",&j) < 1) { /* nope, it must be a filename */
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fp = fopen(args.passcode,"r");
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if (!fp) {
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ast_log(LOG_WARNING,"DISA password file %s not found on chan %s\n",args.passcode,ast_channel_name(chan));
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ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY);
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return -1;
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}
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pwline[0] = 0;
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while(fgets(pwline,sizeof(pwline) - 1,fp)) {
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if (!pwline[0])
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continue;
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if (pwline[strlen(pwline) - 1] == '\n')
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pwline[strlen(pwline) - 1] = 0;
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if (!pwline[0])
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continue;
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/* skip comments */
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if (pwline[0] == '#')
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continue;
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if (pwline[0] == ';')
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continue;
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AST_STANDARD_APP_ARGS(args, pwline);
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ast_debug(1, "Mailbox: %s\n",args.mailbox);
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/* password must be in valid format (numeric) */
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if (sscanf(args.passcode,"%30d", &j) < 1)
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continue;
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/* if we got it */
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if (!strcmp(exten,args.passcode)) {
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if (ast_strlen_zero(args.context))
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args.context = "disa";
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if (ast_strlen_zero(args.mailbox))
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args.mailbox = "";
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break;
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}
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}
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fclose(fp);
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}
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/* compare the two */
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if (strcmp(exten,args.passcode)) {
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ast_log(LOG_WARNING,"DISA on chan %s got bad password %s\n",ast_channel_name(chan),exten);
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goto reorder;
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}
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/* password good, set to dial state */
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ast_debug(1,"DISA on chan %s password is good\n",ast_channel_name(chan));
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play_dialtone(chan, args.mailbox);
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k|=1; /* In number mode */
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i = 0; /* re-set buffer pointer */
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exten[sizeof(acctcode)] = 0;
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ast_copy_string(acctcode, exten, sizeof(acctcode));
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exten[0] = 0;
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ast_debug(1,"Successful DISA log-in on chan %s\n", ast_channel_name(chan));
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continue;
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}
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} else {
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if (j == '#') { /* end of extension .. maybe */
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if (i == 0
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&& (ast_matchmore_extension(chan, args.context, "#", 1,
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL))
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|| ast_exists_extension(chan, args.context, "#", 1,
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL))) ) {
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/* Let the # be the part of, or the entire extension */
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} else {
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break;
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}
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}
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}
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exten[i++] = j; /* save digit */
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exten[i] = 0;
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if (!(k&1))
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continue; /* if getting password, continue doing it */
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/* if this exists */
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/* user wants end of number, remove # */
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if (ast_test_flag(&flags, POUND_TO_END_FLAG) && j == '#') {
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exten[--i] = 0;
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break;
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}
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if (ast_ignore_pattern(args.context, exten)) {
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play_dialtone(chan, "");
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did_ignore = 1;
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} else
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if (did_ignore) {
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ast_playtones_stop(chan);
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did_ignore = 0;
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}
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/* if can do some more, do it */
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if (!ast_matchmore_extension(chan, args.context, exten, 1,
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL))) {
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break;
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}
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}
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}
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ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY);
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if (k == 3) {
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int recheck = 0;
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struct ast_flags cdr_flags = { AST_CDR_FLAG_DISABLE, };
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if (!ast_exists_extension(chan, args.context, exten, 1,
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL))) {
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pbx_builtin_setvar_helper(chan, "INVALID_EXTEN", exten);
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exten[0] = 'i';
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exten[1] = '\0';
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recheck = 1;
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}
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if (!recheck
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|| ast_exists_extension(chan, args.context, exten, 1,
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S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL))) {
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ast_playtones_stop(chan);
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/* We're authenticated and have a target extension */
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if (!ast_strlen_zero(args.cid)) {
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ast_callerid_split(args.cid, ourcidname, sizeof(ourcidname), ourcidnum, sizeof(ourcidnum));
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ast_set_callerid(chan, ourcidnum, ourcidname, ourcidnum);
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}
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if (!ast_strlen_zero(acctcode))
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ast_channel_accountcode_set(chan, acctcode);
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if (special_noanswer) {
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ast_clear_flag(&cdr_flags, AST_CDR_FLAG_DISABLE);
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}
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ast_cdr_reset(ast_channel_name(chan), &cdr_flags);
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ast_explicit_goto(chan, args.context, exten, 1);
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return 0;
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}
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}
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/* Received invalid, but no "i" extension exists in the given context */
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reorder:
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/* Play congestion for a bit */
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ast_indicate(chan, AST_CONTROL_CONGESTION);
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ast_safe_sleep(chan, 10*1000);
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ast_playtones_stop(chan);
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return -1;
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}
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static int unload_module(void)
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{
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return ast_unregister_application(app);
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}
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static int load_module(void)
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{
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return ast_register_application_xml(app, disa_exec) ?
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AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "DISA (Direct Inward System Access) Application");
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