373 lines
9.9 KiB
C
373 lines
9.9 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2010, Digium, Inc.
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*
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* David Vossel <dvossel@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 Trace internal ast_frames on a channel.
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*
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* \author David Vossel <dvossel@digium.com>
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*
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* \ingroup functions
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*/
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/*** MODULEINFO
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<support_level>extended</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 "asterisk/module.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/framehook.h"
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/*** DOCUMENTATION
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<function name="FRAME_TRACE" language="en_US">
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<synopsis>
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View internal ast_frames as they are read and written on a channel.
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</synopsis>
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<syntax>
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<parameter name="filter list type" required="true">
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<para>A filter can be applied to the trace to limit what frames are viewed. This
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filter can either be a <literal>white</literal> or <literal>black</literal> list
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of frame types. When no filter type is present, <literal>white</literal> is
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used. If no arguments are provided at all, all frames will be output.
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</para>
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<para>Below are the different types of frames that can be filtered.</para>
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<enumlist>
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<enum name = "DTMF_BEGIN" />
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<enum name = "DTMF_END" />
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<enum name = "VOICE" />
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<enum name = "VIDEO" />
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<enum name = "CONTROL" />
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<enum name = "NULL" />
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<enum name = "IAX" />
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<enum name = "TEXT" />
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<enum name = "IMAGE" />
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<enum name = "HTML" />
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<enum name = "CNG" />
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<enum name = "MODEM" />
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</enumlist>
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</parameter>
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</syntax>
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<description>
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<para>Examples:</para>
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<para>exten => 1,1,Set(FRAME_TRACE(white)=DTMF_BEGIN,DTMF_END); view only DTMF frames. </para>
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<para>exten => 1,1,Set(FRAME_TRACE()=DTMF_BEGIN,DTMF_END); view only DTMF frames. </para>
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<para>exten => 1,1,Set(FRAME_TRACE(black)=DTMF_BEGIN,DTMF_END); view everything except DTMF frames. </para>
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</description>
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</function>
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***/
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static void print_frame(struct ast_frame *frame);
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static struct {
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enum ast_frame_type type;
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const char *str;
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} frametype2str[] = {
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{ AST_FRAME_DTMF_BEGIN, "DTMF_BEGIN" },
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{ AST_FRAME_DTMF_END, "DTMF_END" },
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{ AST_FRAME_VOICE, "VOICE" },
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{ AST_FRAME_VIDEO, "VIDEO" },
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{ AST_FRAME_CONTROL, "CONTROL" },
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{ AST_FRAME_NULL, "NULL" },
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{ AST_FRAME_IAX, "IAX" },
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{ AST_FRAME_TEXT, "TEXT" },
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{ AST_FRAME_IMAGE, "IMAGE" },
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{ AST_FRAME_HTML, "HTML" },
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{ AST_FRAME_CNG, "CNG" },
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{ AST_FRAME_MODEM, "MODEM" },
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};
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struct frame_trace_data {
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int list_type; /* 0 = white, 1 = black */
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int values[ARRAY_LEN(frametype2str)];
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};
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static void datastore_destroy_cb(void *data) {
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ast_free(data);
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}
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static const struct ast_datastore_info frame_trace_datastore = {
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.type = "frametrace",
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.destroy = datastore_destroy_cb
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};
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static void hook_destroy_cb(void *framedata)
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{
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ast_free(framedata);
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}
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static struct ast_frame *hook_event_cb(struct ast_channel *chan, struct ast_frame *frame, enum ast_framehook_event event, void *data)
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{
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int i;
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int show_frame = 0;
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struct frame_trace_data *framedata = data;
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if (!frame) {
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return frame;
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}
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if ((event != AST_FRAMEHOOK_EVENT_WRITE) && (event != AST_FRAMEHOOK_EVENT_READ)) {
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return frame;
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}
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for (i = 0; i < ARRAY_LEN(frametype2str); i++) {
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if (frame->frametype == frametype2str[i].type) {
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if ((framedata->list_type == 0) && (framedata->values[i])) { /* white list */
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show_frame = 1;
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} else if ((framedata->list_type == 1) && (!framedata->values[i])){ /* black list */
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show_frame = 1;
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}
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break;
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}
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}
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if (show_frame) {
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ast_verbose("%s on Channel %s\n", event == AST_FRAMEHOOK_EVENT_READ ? "<--Read" : "--> Write", chan->name);
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print_frame(frame);
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}
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return frame;
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}
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static int frame_trace_helper(struct ast_channel *chan, const char *cmd, char *data, const char *value)
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{
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struct frame_trace_data *framedata;
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struct ast_datastore *datastore = NULL;
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struct ast_framehook_interface interface = {
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.version = AST_FRAMEHOOK_INTERFACE_VERSION,
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.event_cb = hook_event_cb,
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.destroy_cb = hook_destroy_cb,
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};
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int i = 0;
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if (!(framedata = ast_calloc(1, sizeof(*framedata)))) {
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return 0;
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}
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interface.data = framedata;
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if (!strcasecmp(data, "black")) {
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framedata->list_type = 1;
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}
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for (i = 0; i < ARRAY_LEN(frametype2str); i++) {
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if (strcasestr(value, frametype2str[i].str)) {
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framedata->values[i] = 1;
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}
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}
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ast_channel_lock(chan);
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i = ast_framehook_attach(chan, &interface);
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if (i >= 0) {
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int *id;
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if ((datastore = ast_channel_datastore_find(chan, &frame_trace_datastore, NULL))) {
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id = datastore->data;
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ast_framehook_detach(chan, *id);
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ast_channel_datastore_remove(chan, datastore);
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}
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if (!(datastore = ast_datastore_alloc(&frame_trace_datastore, NULL))) {
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ast_framehook_detach(chan, i);
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ast_channel_unlock(chan);
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return 0;
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}
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if (!(id = ast_calloc(1, sizeof(int)))) {
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ast_datastore_free(datastore);
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ast_framehook_detach(chan, i);
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ast_channel_unlock(chan);
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return 0;
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}
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*id = i; /* Store off the id. The channel is still locked so it is safe to access this ptr. */
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datastore->data = id;
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ast_channel_datastore_add(chan, datastore);
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}
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ast_channel_unlock(chan);
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return 0;
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}
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static void print_frame(struct ast_frame *frame)
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{
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switch (frame->frametype) {
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case AST_FRAME_DTMF_END:
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ast_verbose("FrameType: DTMF END\n");
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ast_verbose("Digit: %d\n", frame->subclass.integer);
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break;
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case AST_FRAME_VOICE:
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ast_verbose("FrameType: VOICE\n");
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ast_verbose("Codec: %s\n", ast_getformatname(&frame->subclass.format));
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ast_verbose("MS: %ld\n", frame->len);
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ast_verbose("Samples: %d\n", frame->samples);
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ast_verbose("Bytes: %d\n", frame->datalen);
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break;
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case AST_FRAME_VIDEO:
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ast_verbose("FrameType: VIDEO\n");
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ast_verbose("Codec: %s\n", ast_getformatname(&frame->subclass.format));
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ast_verbose("MS: %ld\n", frame->len);
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ast_verbose("Samples: %d\n", frame->samples);
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ast_verbose("Bytes: %d\n", frame->datalen);
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break;
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case AST_FRAME_CONTROL:
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ast_verbose("FrameType: CONTROL\n");
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switch (frame->subclass.integer) {
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case AST_CONTROL_HANGUP:
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ast_verbose("SubClass: HANGUP\n");
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break;
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case AST_CONTROL_RING:
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ast_verbose("SubClass: RING\n");
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break;
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case AST_CONTROL_RINGING:
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ast_verbose("SubClass: RINGING\n");
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break;
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case AST_CONTROL_ANSWER:
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ast_verbose("SubClass: ANSWER\n");
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break;
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case AST_CONTROL_BUSY:
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ast_verbose("SubClass: BUSY\n");
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break;
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case AST_CONTROL_TAKEOFFHOOK:
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ast_verbose("SubClass: TAKEOFFHOOK\n");
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break;
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case AST_CONTROL_OFFHOOK:
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ast_verbose("SubClass: OFFHOOK\n");
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break;
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case AST_CONTROL_CONGESTION:
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ast_verbose("SubClass: CONGESTION\n");
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break;
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case AST_CONTROL_FLASH:
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ast_verbose("SubClass: FLASH\n");
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break;
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case AST_CONTROL_WINK:
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ast_verbose("SubClass: WINK\n");
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break;
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case AST_CONTROL_OPTION:
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ast_verbose("SubClass: OPTION\n");
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break;
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case AST_CONTROL_RADIO_KEY:
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ast_verbose("SubClass: RADIO KEY\n");
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break;
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case AST_CONTROL_RADIO_UNKEY:
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ast_verbose("SubClass: RADIO UNKEY\n");
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break;
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case AST_CONTROL_PROGRESS:
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ast_verbose("SubClass: PROGRESS\n");
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break;
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case AST_CONTROL_PROCEEDING:
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ast_verbose("SubClass: PROCEEDING\n");
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break;
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case AST_CONTROL_HOLD:
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ast_verbose("SubClass: HOLD\n");
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break;
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case AST_CONTROL_UNHOLD:
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ast_verbose("SubClass: UNHOLD\n");
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break;
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case AST_CONTROL_VIDUPDATE:
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ast_verbose("SubClass: VIDUPDATE\n");
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break;
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case _XXX_AST_CONTROL_T38:
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ast_verbose("SubClass: XXX T38\n");
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break;
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case AST_CONTROL_SRCUPDATE:
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ast_verbose("SubClass: SRCUPDATE\n");
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break;
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case AST_CONTROL_TRANSFER:
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ast_verbose("SubClass: TRANSFER\n");
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break;
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case AST_CONTROL_CONNECTED_LINE:
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ast_verbose("SubClass: CONNECTED LINE\n");
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break;
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case AST_CONTROL_REDIRECTING:
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ast_verbose("SubClass: REDIRECTING\n");
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break;
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case AST_CONTROL_T38_PARAMETERS:
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ast_verbose("SubClass: T38 PARAMETERS\n");
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break;
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case AST_CONTROL_CC:
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ast_verbose("SubClass: CC\n");
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break;
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case AST_CONTROL_SRCCHANGE:
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ast_verbose("SubClass: SRCCHANGE\n");
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break;
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case AST_CONTROL_READ_ACTION:
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ast_verbose("SubClass: READ ACTION\n");
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break;
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case AST_CONTROL_AOC:
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ast_verbose("SubClass: AOC\n");
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break;
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case AST_CONTROL_MCID:
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ast_verbose("SubClass: MCID\n");
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break;
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}
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if (frame->subclass.integer == -1) {
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ast_verbose("SubClass: %d\n", frame->subclass.integer);
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}
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ast_verbose("Bytes: %d\n", frame->datalen);
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break;
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case AST_FRAME_NULL:
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ast_verbose("FrameType: NULL\n");
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break;
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case AST_FRAME_IAX:
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ast_verbose("FrameType: IAX\n");
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break;
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case AST_FRAME_TEXT:
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ast_verbose("FrameType: TXT\n");
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break;
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case AST_FRAME_IMAGE:
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ast_verbose("FrameType: IMAGE\n");
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break;
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case AST_FRAME_HTML:
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ast_verbose("FrameType: HTML\n");
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break;
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case AST_FRAME_CNG:
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ast_verbose("FrameType: CNG\n");
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break;
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case AST_FRAME_MODEM:
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ast_verbose("FrameType: MODEM\n");
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break;
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case AST_FRAME_DTMF_BEGIN:
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ast_verbose("FrameType: DTMF BEGIN\n");
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ast_verbose("Digit: %d\n", frame->subclass.integer);
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break;
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}
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ast_verbose("Src: %s\n", ast_strlen_zero(frame->src) ? "NOT PRESENT" : frame->src);
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ast_verbose("\n");
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}
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static struct ast_custom_function frame_trace_function = {
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.name = "FRAME_TRACE",
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.write = frame_trace_helper,
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};
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static int unload_module(void)
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{
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return ast_custom_function_unregister(&frame_trace_function);
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}
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static int load_module(void)
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{
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int res = ast_custom_function_register(&frame_trace_function);
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return res ? AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Frame Trace for internal ast_frame debugging.");
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