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asterisk/funcs/func_cdr.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999-2006, Digium, Inc.
*
* Portions Copyright (C) 2005, Anthony Minessale II
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Call Detail Record related dialplan functions
*
* \author Anthony Minessale II
*
* \ingroup functions
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/module.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
#include "asterisk/cdr.h"
#include "asterisk/stasis.h"
#include "asterisk/stasis_message_router.h"
/*** DOCUMENTATION
<function name="CDR" language="en_US">
<synopsis>
Gets or sets a CDR variable.
</synopsis>
<syntax>
<parameter name="name" required="true">
<para>CDR field name:</para>
<enumlist>
<enum name="clid">
<para>Caller ID.</para>
</enum>
<enum name="lastdata">
<para>Last application arguments.</para>
</enum>
<enum name="disposition">
<para>The final state of the CDR.</para>
<enumlist>
<enum name="0">
<para><literal>NO ANSWER</literal></para>
</enum>
<enum name="1">
<para><literal>NO ANSWER</literal> (NULL record)</para>
</enum>
<enum name="2">
<para><literal>FAILED</literal></para>
</enum>
<enum name="4">
<para><literal>BUSY</literal></para>
</enum>
<enum name="8">
<para><literal>ANSWERED</literal></para>
</enum>
<enum name="16">
<para><literal>CONGESTION</literal></para>
</enum>
</enumlist>
</enum>
<enum name="src">
<para>Source.</para>
</enum>
<enum name="start">
<para>Time the call started.</para>
</enum>
<enum name="amaflags">
<para>R/W the Automatic Message Accounting (AMA) flags on the channel.
When read from a channel, the integer value will always be returned.
When written to a channel, both the string format or integer value
is accepted.</para>
<enumlist>
<enum name="1"><para><literal>OMIT</literal></para></enum>
<enum name="2"><para><literal>BILLING</literal></para></enum>
<enum name="3"><para><literal>DOCUMENTATION</literal></para></enum>
</enumlist>
<warning><para>Accessing this setting is deprecated in CDR. Please use the CHANNEL function instead.</para></warning>
</enum>
<enum name="dst">
<para>Destination.</para>
</enum>
<enum name="answer">
<para>Time the call was answered.</para>
</enum>
<enum name="accountcode">
<para>The channel's account code.</para>
<warning><para>Accessing this setting is deprecated in CDR. Please use the CHANNEL function instead.</para></warning>
</enum>
<enum name="dcontext">
<para>Destination context.</para>
</enum>
<enum name="end">
<para>Time the call ended.</para>
</enum>
<enum name="uniqueid">
<para>The channel's unique id.</para>
</enum>
<enum name="dstchannel">
<para>Destination channel.</para>
</enum>
<enum name="duration">
<para>Duration of the call.</para>
</enum>
<enum name="userfield">
<para>The channel's user specified field.</para>
</enum>
<enum name="lastapp">
<para>Last application.</para>
</enum>
<enum name="billsec">
<para>Duration of the call once it was answered.</para>
</enum>
<enum name="channel">
<para>Channel name.</para>
</enum>
<enum name="sequence">
<para>CDR sequence number.</para>
</enum>
</enumlist>
</parameter>
<parameter name="options" required="false">
<optionlist>
<option name="f">
<para>Returns billsec or duration fields as floating point values.</para>
</option>
<option name="u">
<para>Retrieves the raw, unprocessed value.</para>
<para>For example, 'start', 'answer', and 'end' will be retrieved as epoch
values, when the <literal>u</literal> option is passed, but formatted as YYYY-MM-DD HH:MM:SS
otherwise. Similarly, disposition and amaflags will return their raw
integral values.</para>
</option>
</optionlist>
</parameter>
</syntax>
<description>
<para>All of the CDR field names are read-only, except for <literal>accountcode</literal>,
<literal>userfield</literal>, and <literal>amaflags</literal>. You may, however, supply
a name not on the above list, and create your own variable, whose value can be changed
with this function, and this variable will be stored on the CDR.</para>
<note><para>CDRs can only be modified before the bridge between two channels is
torn down. For example, CDRs may not be modified after the <literal>Dial</literal>
application has returned.</para></note>
<example title="Set the userfield">
exten => 1,1,Set(CDR(userfield)=test)
</example>
</description>
</function>
<function name="CDR_PROP" language="en_US">
<synopsis>
Set a property on a channel's CDR.
</synopsis>
<syntax>
<parameter name="name" required="true">
<para>The property to set on the CDR.</para>
<enumlist>
<enum name="party_a">
<para>Set this channel as the preferred Party A when
channels are associated together.</para>
<para>Write-Only</para>
</enum>
<enum name="disable">
<para>Setting to 1 will disable CDRs for this channel.
Setting to 0 will enable CDRs for this channel.</para>
<para>Write-Only</para>
</enum>
</enumlist>
</parameter>
</syntax>
<description>
<para>This function sets a property on a channel's CDR. Properties
alter the behavior of how the CDR operates for that channel.</para>
</description>
</function>
***/
enum cdr_option_flags {
OPT_UNPARSED = (1 << 1),
OPT_FLOAT = (1 << 2),
};
AST_APP_OPTIONS(cdr_func_options, {
AST_APP_OPTION('f', OPT_FLOAT),
AST_APP_OPTION('u', OPT_UNPARSED),
});
struct cdr_func_payload {
struct ast_channel *chan;
const char *cmd;
const char *arguments;
const char *value;
void *data;
};
struct cdr_func_data {
char *buf;
size_t len;
};
STASIS_MESSAGE_TYPE_DEFN_LOCAL(cdr_read_message_type);
STASIS_MESSAGE_TYPE_DEFN_LOCAL(cdr_write_message_type);
STASIS_MESSAGE_TYPE_DEFN_LOCAL(cdr_prop_write_message_type);
static struct timeval cdr_retrieve_time(struct ast_channel *chan, const char *time_name)
{
struct timeval time = { 0 };
char *value = NULL;
char tempbuf[128];
long int tv_sec;
long int tv_usec;
if (ast_strlen_zero(ast_channel_name(chan))) {
/* Format request on a dummy channel */
ast_cdr_format_var(ast_channel_cdr(chan), time_name, &value, tempbuf, sizeof(tempbuf), 1);
} else {
ast_cdr_getvar(ast_channel_name(chan), time_name, tempbuf, sizeof(tempbuf));
}
/* time.tv_usec is suseconds_t, which could be int or long */
if (sscanf(tempbuf, "%ld.%ld", &tv_sec, &tv_usec) == 2) {
time.tv_sec = tv_sec;
time.tv_usec = tv_usec;
} else {
ast_log(AST_LOG_WARNING, "Failed to fully extract '%s' from CDR\n", time_name);
}
return time;
}
static void cdr_read_callback(void *data, struct stasis_subscription *sub, struct stasis_message *message)
{
struct cdr_func_payload *payload = stasis_message_data(message);
struct cdr_func_data *output;
char *info;
char *value = NULL;
struct ast_flags flags = { 0 };
char tempbuf[512];
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(variable);
AST_APP_ARG(options);
);
if (cdr_read_message_type() != stasis_message_type(message)) {
return;
}
ast_assert(payload != NULL);
output = payload->data;
ast_assert(output != NULL);
if (ast_strlen_zero(payload->arguments)) {
ast_log(AST_LOG_WARNING, "%s requires a variable (%s(variable[,option]))\n)",
payload->cmd, payload->cmd);
return;
}
info = ast_strdupa(payload->arguments);
AST_STANDARD_APP_ARGS(args, info);
if (!ast_strlen_zero(args.options)) {
ast_app_parse_options(cdr_func_options, &flags, NULL, args.options);
}
if (ast_strlen_zero(ast_channel_name(payload->chan))) {
/* Format request on a dummy channel */
ast_cdr_format_var(ast_channel_cdr(payload->chan), args.variable, &value, tempbuf, sizeof(tempbuf), ast_test_flag(&flags, OPT_UNPARSED));
if (ast_strlen_zero(value)) {
return;
}
ast_copy_string(tempbuf, value, sizeof(tempbuf));
ast_set_flag(&flags, OPT_UNPARSED);
} else if (ast_cdr_getvar(ast_channel_name(payload->chan), args.variable, tempbuf, sizeof(tempbuf))) {
return;
}
if (ast_test_flag(&flags, OPT_FLOAT)
&& (!strcasecmp("billsec", args.variable) || !strcasecmp("duration", args.variable))) {
struct timeval start = cdr_retrieve_time(payload->chan, !strcasecmp("billsec", args.variable) ? "answer" : "start");
struct timeval finish = cdr_retrieve_time(payload->chan, "end");
double delta;
if (ast_tvzero(finish)) {
finish = ast_tvnow();
}
if (ast_tvzero(start)) {
delta = 0.0;
} else {
delta = (double)(ast_tvdiff_us(finish, start) / 1000000.0);
}
snprintf(tempbuf, sizeof(tempbuf), "%lf", delta);
} else if (!ast_test_flag(&flags, OPT_UNPARSED)) {
if (!strcasecmp("start", args.variable)
|| !strcasecmp("end", args.variable)
|| !strcasecmp("answer", args.variable)) {
struct timeval fmt_time;
struct ast_tm tm;
/* tv_usec is suseconds_t, which could be int or long */
long int tv_sec;
long int tv_usec;
if (sscanf(tempbuf, "%ld.%ld", &tv_sec, &tv_usec) != 2) {
ast_log(AST_LOG_WARNING, "Unable to parse %s (%s) from the CDR for channel %s\n",
args.variable, tempbuf, ast_channel_name(payload->chan));
return;
}
if (tv_sec) {
fmt_time.tv_sec = tv_sec;
fmt_time.tv_usec = tv_usec;
ast_localtime(&fmt_time, &tm, NULL);
ast_strftime(tempbuf, sizeof(tempbuf), "%Y-%m-%d %T", &tm);
} else {
tempbuf[0] = '\0';
}
} else if (!strcasecmp("disposition", args.variable)) {
int disposition;
if (sscanf(tempbuf, "%8d", &disposition) != 1) {
ast_log(AST_LOG_WARNING, "Unable to parse %s (%s) from the CDR for channel %s\n",
args.variable, tempbuf, ast_channel_name(payload->chan));
return;
}
snprintf(tempbuf, sizeof(tempbuf), "%s", ast_cdr_disp2str(disposition));
} else if (!strcasecmp("amaflags", args.variable)) {
int amaflags;
if (sscanf(tempbuf, "%8d", &amaflags) != 1) {
ast_log(AST_LOG_WARNING, "Unable to parse %s (%s) from the CDR for channel %s\n",
args.variable, tempbuf, ast_channel_name(payload->chan));
return;
}
snprintf(tempbuf, sizeof(tempbuf), "%s", ast_channel_amaflags2string(amaflags));
}
}
ast_copy_string(output->buf, tempbuf, output->len);
}
static void cdr_write_callback(void *data, struct stasis_subscription *sub, struct stasis_message *message)
{
struct cdr_func_payload *payload;
struct ast_flags flags = { 0 };
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(variable);
AST_APP_ARG(options);
);
char *parse;
if (cdr_write_message_type() != stasis_message_type(message)) {
return;
}
payload = stasis_message_data(message);
if (!payload) {
return;
}
if (ast_strlen_zero(payload->arguments)
|| !payload->value) {
/* Sanity check. cdr_write() could never send these bad messages */
ast_assert(0);
return;
}
parse = ast_strdupa(payload->arguments);
AST_STANDARD_APP_ARGS(args, parse);
if (!ast_strlen_zero(args.options)) {
ast_app_parse_options(cdr_func_options, &flags, NULL, args.options);
}
/* These are already handled by cdr_write() */
ast_assert(strcasecmp(args.variable, "accountcode")
&& strcasecmp(args.variable, "peeraccount")
&& strcasecmp(args.variable, "amaflags"));
if (!strcasecmp(args.variable, "userfield")) {
ast_cdr_setuserfield(ast_channel_name(payload->chan), payload->value);
} else {
ast_cdr_setvar(ast_channel_name(payload->chan), args.variable, payload->value);
}
}
static void cdr_prop_write_callback(void *data, struct stasis_subscription *sub, struct stasis_message *message)
{
struct cdr_func_payload *payload = stasis_message_data(message);
enum ast_cdr_options option;
char *parse;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(variable);
AST_APP_ARG(options);
);
if (cdr_prop_write_message_type() != stasis_message_type(message)) {
return;
}
if (!payload) {
return;
}
if (ast_strlen_zero(payload->arguments)) {
ast_log(AST_LOG_WARNING, "%s requires a variable (%s(variable)=value)\n)",
payload->cmd, payload->cmd);
return;
}
if (ast_strlen_zero(payload->value)) {
ast_log(AST_LOG_WARNING, "%s requires a value (%s(variable)=value)\n)",
payload->cmd, payload->cmd);
return;
}
parse = ast_strdupa(payload->arguments);
AST_STANDARD_APP_ARGS(args, parse);
if (!strcasecmp("party_a", args.variable)) {
option = AST_CDR_FLAG_PARTY_A;
} else if (!strcasecmp("disable", args.variable)) {
option = AST_CDR_FLAG_DISABLE_ALL;
} else {
ast_log(AST_LOG_WARNING, "Unknown option %s used with %s\n", args.variable, payload->cmd);
return;
}
if (ast_true(payload->value)) {
ast_cdr_set_property(ast_channel_name(payload->chan), option);
} else {
ast_cdr_clear_property(ast_channel_name(payload->chan), option);
}
}
static int cdr_read(struct ast_channel *chan, const char *cmd, char *parse,
char *buf, size_t len)
{
RAII_VAR(struct stasis_message *, message, NULL, ao2_cleanup);
RAII_VAR(struct cdr_func_payload *, payload, NULL, ao2_cleanup);
struct cdr_func_data output = { 0, };
if (!chan) {
ast_log(LOG_WARNING, "No channel was provided to %s function.\n", cmd);
return -1;
}
if (!cdr_read_message_type()) {
ast_log(AST_LOG_WARNING, "Failed to manipulate CDR for channel %s: message type not available\n",
ast_channel_name(chan));
return -1;
}
payload = ao2_alloc(sizeof(*payload), NULL);
if (!payload) {
return -1;
}
payload->chan = chan;
payload->cmd = cmd;
payload->arguments = parse;
payload->data = &output;
buf[0] = '\0';/* Ensure the buffer is initialized. */
output.buf = buf;
output.len = len;
message = stasis_message_create(cdr_read_message_type(), payload);
if (!message) {
ast_log(AST_LOG_WARNING, "Failed to manipulate CDR for channel %s: unable to create message\n",
ast_channel_name(chan));
return -1;
}
/* If this is a request on a dummy channel, we're doing post-processing on an
* already dispatched CDR. Simply call the callback to calculate the value and
* return, instead of posting to Stasis as we would for a running channel.
*/
if (ast_strlen_zero(ast_channel_name(chan))) {
cdr_read_callback(NULL, NULL, message);
} else {
RAII_VAR(struct stasis_message_router *, router, ast_cdr_message_router(), ao2_cleanup);
if (!router) {
ast_log(AST_LOG_WARNING, "Failed to manipulate CDR for channel %s: no message router\n",
ast_channel_name(chan));
return -1;
}
stasis_message_router_publish_sync(router, message);
}
return 0;
}
static int cdr_write(struct ast_channel *chan, const char *cmd, char *arguments,
const char *value)
{
struct stasis_message *message;
struct cdr_func_payload *payload;
struct stasis_message_router *router;
AST_DECLARE_APP_ARGS(args,
AST_APP_ARG(variable);
AST_APP_ARG(options);
);
char *parse;
if (!chan) {
ast_log(LOG_WARNING, "No channel was provided to %s function.\n", cmd);
return -1;
}
if (ast_strlen_zero(arguments)) {
ast_log(LOG_WARNING, "%s requires a variable (%s(variable)=value)\n)",
cmd, cmd);
return -1;
}
if (!value) {
ast_log(LOG_WARNING, "%s requires a value (%s(variable)=value)\n)",
cmd, cmd);
return -1;
}
parse = ast_strdupa(arguments);
AST_STANDARD_APP_ARGS(args, parse);
/* These CDR variables are no longer supported or set directly on the channel */
if (!strcasecmp(args.variable, "accountcode")) {
ast_log(LOG_WARNING, "Using the %s function to set 'accountcode' is deprecated. Please use the CHANNEL function instead.\n",
cmd);
ast_channel_lock(chan);
ast_channel_accountcode_set(chan, value);
ast_channel_unlock(chan);
return 0;
}
if (!strcasecmp(args.variable, "amaflags")) {
int amaflags;
ast_log(LOG_WARNING, "Using the %s function to set 'amaflags' is deprecated. Please use the CHANNEL function instead.\n",
cmd);
if (isdigit(*value)) {
if (sscanf(value, "%30d", &amaflags) != 1) {
amaflags = AST_AMA_NONE;
}
} else {
amaflags = ast_channel_string2amaflag(value);
}
ast_channel_lock(chan);
ast_channel_amaflags_set(chan, amaflags);
ast_channel_unlock(chan);
return 0;
}
if (!strcasecmp(args.variable, "peeraccount")) {
ast_log(LOG_WARNING, "The 'peeraccount' setting is not supported. Please set the 'accountcode' on the appropriate channel using the CHANNEL function.\n");
return 0;
}
/* The remaining CDR variables are handled by CDR processing code */
if (!cdr_write_message_type()) {
ast_log(LOG_WARNING, "Failed to manipulate CDR for channel %s: message type not available\n",
ast_channel_name(chan));
return -1;
}
payload = ao2_alloc(sizeof(*payload), NULL);
if (!payload) {
return -1;
}
payload->chan = chan;
payload->cmd = cmd;
payload->arguments = arguments;
payload->value = value;
message = stasis_message_create(cdr_write_message_type(), payload);
ao2_ref(payload, -1);
if (!message) {
ast_log(LOG_WARNING, "Failed to manipulate CDR for channel %s: unable to create message\n",
ast_channel_name(chan));
return -1;
}
router = ast_cdr_message_router();
if (!router) {
ast_log(LOG_WARNING, "Failed to manipulate CDR for channel %s: no message router\n",
ast_channel_name(chan));
ao2_ref(message, -1);
return -1;
}
stasis_message_router_publish_sync(router, message);
ao2_ref(router, -1);
ao2_ref(message, -1);
return 0;
}
static int cdr_prop_write(struct ast_channel *chan, const char *cmd, char *parse,
const char *value)
{
RAII_VAR(struct stasis_message *, message, NULL, ao2_cleanup);
RAII_VAR(struct cdr_func_payload *, payload, NULL, ao2_cleanup);
RAII_VAR(struct stasis_message_router *, router, ast_cdr_message_router(), ao2_cleanup);
if (!chan) {
ast_log(LOG_WARNING, "No channel was provided to %s function.\n", cmd);
return -1;
}
if (!router) {
ast_log(AST_LOG_WARNING, "Failed to manipulate CDR for channel %s: no message router\n",
ast_channel_name(chan));
return -1;
}
if (!cdr_prop_write_message_type()) {
ast_log(AST_LOG_WARNING, "Failed to manipulate CDR for channel %s: message type not available\n",
ast_channel_name(chan));
return -1;
}
payload = ao2_alloc(sizeof(*payload), NULL);
if (!payload) {
return -1;
}
payload->chan = chan;
payload->cmd = cmd;
payload->arguments = parse;
payload->value = value;
message = stasis_message_create(cdr_prop_write_message_type(), payload);
if (!message) {
ast_log(AST_LOG_WARNING, "Failed to manipulate CDR for channel %s: unable to create message\n",
ast_channel_name(chan));
return -1;
}
stasis_message_router_publish_sync(router, message);
return 0;
}
static struct ast_custom_function cdr_function = {
.name = "CDR",
.read = cdr_read,
.write = cdr_write,
};
static struct ast_custom_function cdr_prop_function = {
.name = "CDR_PROP",
.read = NULL,
.write = cdr_prop_write,
};
static int unload_module(void)
{
RAII_VAR(struct stasis_message_router *, router, ast_cdr_message_router(), ao2_cleanup);
int res = 0;
if (router) {
stasis_message_router_remove(router, cdr_prop_write_message_type());
stasis_message_router_remove(router, cdr_write_message_type());
stasis_message_router_remove(router, cdr_read_message_type());
}
STASIS_MESSAGE_TYPE_CLEANUP(cdr_read_message_type);
STASIS_MESSAGE_TYPE_CLEANUP(cdr_write_message_type);
STASIS_MESSAGE_TYPE_CLEANUP(cdr_prop_write_message_type);
res |= ast_custom_function_unregister(&cdr_function);
res |= ast_custom_function_unregister(&cdr_prop_function);
return res;
}
static int load_module(void)
{
RAII_VAR(struct stasis_message_router *, router, ast_cdr_message_router(), ao2_cleanup);
int res = 0;
if (!router) {
return AST_MODULE_LOAD_DECLINE;
}
res |= STASIS_MESSAGE_TYPE_INIT(cdr_read_message_type);
res |= STASIS_MESSAGE_TYPE_INIT(cdr_write_message_type);
res |= STASIS_MESSAGE_TYPE_INIT(cdr_prop_write_message_type);
res |= ast_custom_function_register(&cdr_function);
res |= ast_custom_function_register(&cdr_prop_function);
res |= stasis_message_router_add(router, cdr_prop_write_message_type(),
cdr_prop_write_callback, NULL);
res |= stasis_message_router_add(router, cdr_write_message_type(),
cdr_write_callback, NULL);
res |= stasis_message_router_add(router, cdr_read_message_type(),
cdr_read_callback, NULL);
if (res) {
unload_module();
return AST_MODULE_LOAD_DECLINE;
}
return AST_MODULE_LOAD_SUCCESS;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Call Detail Record (CDR) dialplan functions",
.support_level = AST_MODULE_SUPPORT_CORE,
.load = load_module,
.unload = unload_module,
.requires = "cdr",
);
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