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asterisk/main/cli.c

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v18.15.1
2023-05-25 18:45:57 +00:00
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2006, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
* 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 Standard Command Line Interface
*
* \author Mark Spencer <markster@digium.com>
*/
/*! \li \ref cli.c uses the configuration file \ref cli_permissions.conf
* \addtogroup configuration_file Configuration Files
*/
/*!
* \page cli_permissions.conf cli_permissions.conf
* \verbinclude cli_permissions.conf.sample
*/
/*** MODULEINFO
<support_level>core</support_level>
***/
#include "asterisk.h"
#include "asterisk/_private.h"
#include "asterisk/paths.h" /* use ast_config_AST_MODULE_DIR */
#include <signal.h>
#include <ctype.h>
#include <regex.h>
#include <pwd.h>
#include <grp.h>
#include "asterisk/cli.h"
#include "asterisk/linkedlists.h"
#include "asterisk/module.h"
#include "asterisk/pbx.h"
#include "asterisk/channel.h"
#include "asterisk/utils.h"
#include "asterisk/app.h"
#include "asterisk/lock.h"
#include "asterisk/threadstorage.h"
#include "asterisk/logger_category.h"
#include "asterisk/translate.h"
#include "asterisk/bridge.h"
#include "asterisk/stasis_channels.h"
#include "asterisk/stasis_bridges.h"
#include "asterisk/vector.h"
#include "asterisk/stream.h"
/*!
* \brief List of restrictions per user.
*/
struct cli_perm {
unsigned int permit:1; /*!< 1=Permit 0=Deny */
char *command; /*!< Command name (to apply restrictions) */
AST_LIST_ENTRY(cli_perm) list;
};
AST_LIST_HEAD_NOLOCK(cli_perm_head, cli_perm);
/*! \brief list of users to apply restrictions. */
struct usergroup_cli_perm {
int uid; /*!< User ID (-1 disabled) */
int gid; /*!< Group ID (-1 disabled) */
struct cli_perm_head *perms; /*!< List of permissions. */
AST_LIST_ENTRY(usergroup_cli_perm) list;/*!< List mechanics */
};
/*! \brief CLI permissions config file. */
static const char perms_config[] = "cli_permissions.conf";
/*! \brief Default permissions value 1=Permit 0=Deny */
static int cli_default_perm = 1;
/*! \brief mutex used to prevent a user from running the 'cli reload permissions' command while
* it is already running. */
AST_MUTEX_DEFINE_STATIC(permsconfiglock);
/*! \brief List of users and permissions. */
static AST_RWLIST_HEAD_STATIC(cli_perms, usergroup_cli_perm);
/*!
* \brief map a debug or verbose level to a module name
*/
struct module_level {
unsigned int level;
AST_RWLIST_ENTRY(module_level) entry;
char module[0];
};
AST_RWLIST_HEAD(module_level_list, module_level);
/*! lists of module names and their debug/trace levels */
static struct module_level_list debug_modules = AST_RWLIST_HEAD_INIT_VALUE;
static struct module_level_list trace_modules = AST_RWLIST_HEAD_INIT_VALUE;
AST_THREADSTORAGE(ast_cli_buf);
AST_RWLOCK_DEFINE_STATIC(shutdown_commands_lock);
static AST_VECTOR(, struct ast_cli_entry *) shutdown_commands;
/*! \brief Initial buffer size for resulting strings in ast_cli() */
#define AST_CLI_INITLEN 256
void ast_cli(int fd, const char *fmt, ...)
{
int res;
struct ast_str *buf;
va_list ap;
if (!(buf = ast_str_thread_get(&ast_cli_buf, AST_CLI_INITLEN)))
return;
va_start(ap, fmt);
res = ast_str_set_va(&buf, 0, fmt, ap);
va_end(ap);
if (res != AST_DYNSTR_BUILD_FAILED) {
ast_carefulwrite(fd, ast_str_buffer(buf), ast_str_strlen(buf), 100);
}
}
unsigned int ast_debug_get_by_module(const char *module)
{
struct module_level *ml;
unsigned int res = 0;
AST_RWLIST_RDLOCK(&debug_modules);
AST_LIST_TRAVERSE(&debug_modules, ml, entry) {
if (!strcasecmp(ml->module, module)) {
res = ml->level;
break;
}
}
AST_RWLIST_UNLOCK(&debug_modules);
return res;
}
unsigned int ast_trace_get_by_module(const char *module)
{
struct module_level *ml;
unsigned int res = 0;
AST_RWLIST_RDLOCK(&trace_modules);
AST_LIST_TRAVERSE(&trace_modules, ml, entry) {
if (!strcasecmp(ml->module, module)) {
res = ml->level;
break;
}
}
AST_RWLIST_UNLOCK(&trace_modules);
return res;
}
/*! \internal
* \brief Check if the user with 'uid' and 'gid' is allow to execute 'command',
* if command starts with '_' then not check permissions, just permit
* to run the 'command'.
* if uid == -1 or gid == -1 do not check permissions.
* if uid == -2 and gid == -2 is because rasterisk client didn't send
* the credentials, so the cli_default_perm will be applied.
* \param uid User ID.
* \param gid Group ID.
* \param command Command name to check permissions.
* \retval 1 if has permission
* \retval 0 if it is not allowed.
*/
static int cli_has_permissions(int uid, int gid, const char *command)
{
struct usergroup_cli_perm *user_perm;
struct cli_perm *perm;
/* set to the default permissions general option. */
int isallowg = cli_default_perm, isallowu = -1, ispattern;
regex_t regexbuf;
/* if uid == -1 or gid == -1 do not check permissions.
if uid == -2 and gid == -2 is because rasterisk client didn't send
the credentials, so the cli_default_perm will be applied. */
if ((uid == CLI_NO_PERMS && gid == CLI_NO_PERMS) || command[0] == '_') {
return 1;
}
if (gid < 0 && uid < 0) {
return cli_default_perm;
}
AST_RWLIST_RDLOCK(&cli_perms);
AST_LIST_TRAVERSE(&cli_perms, user_perm, list) {
if (user_perm->gid != gid && user_perm->uid != uid) {
continue;
}
AST_LIST_TRAVERSE(user_perm->perms, perm, list) {
if (strcasecmp(perm->command, "all") && strncasecmp(perm->command, command, strlen(perm->command))) {
/* if the perm->command is a pattern, check it against command. */
ispattern = !regcomp(&regexbuf, perm->command, REG_EXTENDED | REG_NOSUB | REG_ICASE);
if (ispattern && regexec(&regexbuf, command, 0, NULL, 0)) {
regfree(&regexbuf);
continue;
}
if (!ispattern) {
continue;
}
regfree(&regexbuf);
}
if (user_perm->uid == uid) {
/* this is a user definition. */
isallowu = perm->permit;
} else {
/* otherwise is a group definition. */
isallowg = perm->permit;
}
}
}
AST_RWLIST_UNLOCK(&cli_perms);
if (isallowu > -1) {
/* user definition override group definition. */
isallowg = isallowu;
}
return isallowg;
}
static AST_RWLIST_HEAD_STATIC(helpers, ast_cli_entry);
static char *handle_load(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
/* "module load <mod>" */
switch (cmd) {
case CLI_INIT:
e->command = "module load";
e->usage =
"Usage: module load <module name>\n"
" Loads the specified module into Asterisk.\n";
return NULL;
case CLI_GENERATE:
if (a->pos != e->args) {
return NULL;
}
return ast_module_helper(a->line, a->word, a->pos, a->n, a->pos, AST_MODULE_HELPER_LOAD);
}
if (a->argc != e->args + 1) {
return CLI_SHOWUSAGE;
}
if (ast_load_resource(a->argv[e->args])) {
ast_cli(a->fd, "Unable to load module %s\n", a->argv[e->args]);
return CLI_FAILURE;
}
ast_cli(a->fd, "Loaded %s\n", a->argv[e->args]);
return CLI_SUCCESS;
}
static char *handle_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
int x;
switch (cmd) {
case CLI_INIT:
e->command = "module reload";
e->usage =
"Usage: module reload [module ...]\n"
" Reloads configuration files for all listed modules which support\n"
" reloading, or for all supported modules if none are listed.\n";
return NULL;
case CLI_GENERATE:
return ast_module_helper(a->line, a->word, a->pos, a->n, a->pos, AST_MODULE_HELPER_RELOAD);
}
if (a->argc == e->args) {
ast_module_reload(NULL);
return CLI_SUCCESS;
}
for (x = e->args; x < a->argc; x++) {
enum ast_module_reload_result res = ast_module_reload(a->argv[x]);
switch (res) {
case AST_MODULE_RELOAD_NOT_FOUND:
ast_cli(a->fd, "No such module '%s'\n", a->argv[x]);
break;
case AST_MODULE_RELOAD_NOT_IMPLEMENTED:
ast_cli(a->fd, "The module '%s' does not support reloads\n", a->argv[x]);
break;
case AST_MODULE_RELOAD_QUEUED:
ast_cli(a->fd, "Asterisk cannot reload a module yet; request queued\n");
break;
case AST_MODULE_RELOAD_ERROR:
ast_cli(a->fd, "The module '%s' reported a reload failure\n", a->argv[x]);
break;
case AST_MODULE_RELOAD_IN_PROGRESS:
ast_cli(a->fd, "A module reload request is already in progress; please be patient\n");
break;
case AST_MODULE_RELOAD_UNINITIALIZED:
ast_cli(a->fd, "The module '%s' was not properly initialized. Before reloading"
" the module, you must run \"module load %s\" and fix whatever is"
" preventing the module from being initialized.\n", a->argv[x], a->argv[x]);
break;
case AST_MODULE_RELOAD_SUCCESS:
ast_cli(a->fd, "Module '%s' reloaded successfully.\n", a->argv[x]);
break;
}
}
return CLI_SUCCESS;
}
static char *handle_core_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
switch (cmd) {
case CLI_INIT:
e->command = "core reload";
e->usage =
"Usage: core reload\n"
" Execute a global reload.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
if (a->argc != e->args) {
return CLI_SHOWUSAGE;
}
ast_module_reload(NULL);
return CLI_SUCCESS;
}
/*!
* \brief Find the module level setting
*
* \param module Module name to look for.
* \param mll List to search.
*
* \retval level struct found on success.
* \retval NULL not found.
*/
static struct module_level *find_module_level(const char *module, struct module_level_list *mll)
{
struct module_level *ml;
AST_LIST_TRAVERSE(mll, ml, entry) {
if (!strcasecmp(ml->module, module))
return ml;
}
return NULL;
}
static char *complete_number(const char *partial, unsigned int min, unsigned int max, int n)
{
int i, count = 0;
unsigned int prospective[2];
unsigned int part = strtoul(partial, NULL, 10);
char next[13];
if (part < min || part > max) {
return NULL;
}
for (i = 0; i < 21; i++) {
if (i == 0) {
prospective[0] = prospective[1] = part;
} else if (part == 0 && !ast_strlen_zero(partial)) {
break;
} else if (i < 11) {
prospective[0] = prospective[1] = part * 10 + (i - 1);
} else {
prospective[0] = (part * 10 + (i - 11)) * 10;
prospective[1] = prospective[0] + 9;
}
if (i < 11 && (prospective[0] < min || prospective[0] > max)) {
continue;
} else if (prospective[1] < min || prospective[0] > max) {
continue;
}
if (++count > n) {
if (i < 11) {
snprintf(next, sizeof(next), "%u", prospective[0]);
} else {
snprintf(next, sizeof(next), "%u...", prospective[0] / 10);
}
return ast_strdup(next);
}
}
return NULL;
}
#define DEBUG_HANDLER 0
#define TRACE_HANDLER 1
#define VERBOSE_HANDLER 2
static void status_debug_verbose(struct ast_cli_args *a, int handler, int old_val, int cur_val)
{
char was_buf[30];
const char *was;
const char *what = "";
switch(handler) {
case DEBUG_HANDLER:
what = "Core debug";
break;
case TRACE_HANDLER:
what = "Core trace";
break;
case VERBOSE_HANDLER:
what = "Console verbose";
break;
}
if (old_val) {
snprintf(was_buf, sizeof(was_buf), "%d", old_val);
was = was_buf;
} else {
was = "OFF";
}
if (old_val == cur_val) {
ast_cli(a->fd, "%s is still %s.\n", what, was);
} else {
char now_buf[30];
const char *now;
if (cur_val) {
snprintf(now_buf, sizeof(now_buf), "%d", cur_val);
now = now_buf;
} else {
now = "OFF";
}
ast_cli(a->fd, "%s was %s and is now %s.\n", what, was, now);
}
}
static char *handle_debug_or_trace(int handler, struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
int oldval;
int newlevel;
int atleast = 0;
struct module_level *ml;
struct module_level_list *modules;
unsigned int module_option;
int *core_option;
const char *handler_name;
if (a->argc <= e->args) {
return CLI_SHOWUSAGE;
}
if (handler == DEBUG_HANDLER) {
modules = &debug_modules;
module_option = AST_OPT_FLAG_DEBUG_MODULE;
core_option = &option_debug;
handler_name = "debug";
} else {
modules = &trace_modules;
module_option = AST_OPT_FLAG_TRACE_MODULE;
core_option = &option_trace;
handler_name = "trace";
}
if (a->argc == e->args + 1 && !strcasecmp(a->argv[e->args], "off")) {
newlevel = 0;
} else {
if (!strcasecmp(a->argv[e->args], "atleast")) {
atleast = 1;
}
if (a->argc != e->args + atleast + 1 && a->argc != e->args + atleast + 2) {
return CLI_SHOWUSAGE;
}
if (sscanf(a->argv[e->args + atleast], "%30d", &newlevel) != 1) {
return CLI_SHOWUSAGE;
}
if (a->argc == e->args + atleast + 2) {
/* We have specified a module name. */
char *mod = ast_strdupa(a->argv[e->args + atleast + 1]);
int mod_len = strlen(mod);
if (3 < mod_len && !strcasecmp(mod + mod_len - 3, ".so")) {
mod[mod_len - 3] = '\0';
}
AST_RWLIST_WRLOCK(modules);
ml = find_module_level(mod, modules);
if (!newlevel) {
if (!ml) {
/* Specified off for a nonexistent entry. */
AST_RWLIST_UNLOCK(modules);
ast_cli(a->fd, "Core %s is still 0 for '%s'.\n", handler_name, mod);
return CLI_SUCCESS;
}
AST_RWLIST_REMOVE(modules, ml, entry);
if (AST_RWLIST_EMPTY(modules)) {
ast_clear_flag(&ast_options, module_option);
}
AST_RWLIST_UNLOCK(modules);
ast_cli(a->fd, "Core %s was %u and has been set to 0 for '%s'.\n", handler_name,
ml->level, mod);
ast_free(ml);
return CLI_SUCCESS;
}
if (ml) {
if ((atleast && newlevel < ml->level) || ml->level == newlevel) {
ast_cli(a->fd, "Core %s is still %u for '%s'.\n", handler_name, ml->level, mod);
AST_RWLIST_UNLOCK(modules);
return CLI_SUCCESS;
}
oldval = ml->level;
ml->level = newlevel;
} else {
ml = ast_calloc(1, sizeof(*ml) + strlen(mod) + 1);
if (!ml) {
AST_RWLIST_UNLOCK(modules);
return CLI_FAILURE;
}
oldval = ml->level;
ml->level = newlevel;
strcpy(ml->module, mod);
AST_RWLIST_INSERT_TAIL(modules, ml, entry);
}
ast_set_flag(&ast_options, module_option);
ast_cli(a->fd, "Core %s was %d and has been set to %u for '%s'.\n", handler_name,
oldval, ml->level, ml->module);
AST_RWLIST_UNLOCK(modules);
return CLI_SUCCESS;
}
}
/* Update global debug level */
if (!newlevel) {
/* Specified level was 0 or off. */
AST_RWLIST_WRLOCK(modules);
while ((ml = AST_RWLIST_REMOVE_HEAD(modules, entry))) {
ast_free(ml);
}
ast_clear_flag(&ast_options, AST_OPT_FLAG_DEBUG_MODULE);
AST_RWLIST_UNLOCK(modules);
}
oldval = *core_option;
if (!atleast || newlevel > *core_option) {
*core_option = newlevel;
}
/* Report debug level status */
status_debug_verbose(a, handler, oldval, *core_option);
return CLI_SUCCESS;
}
static char *handle_debug(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
int atleast = 0;
const char *argv3 = a->argv ? S_OR(a->argv[3], "") : "";
switch (cmd) {
case CLI_INIT:
e->command = "core set debug";
e->usage =
"Usage: core set debug [atleast] <level> [module]\n"
" core set debug off\n"
"\n"
" Sets level of debug messages to be displayed or\n"
" sets a module name to display debug messages from.\n"
" 0 or off means no messages should be displayed.\n"
" Equivalent to -d[d[...]] on startup\n";
return NULL;
case CLI_GENERATE:
if (!strcasecmp(argv3, "category")) {
return NULL;
}
if (!strcasecmp(argv3, "atleast")) {
atleast = 1;
}
if (a->pos == 3 || (a->pos == 4 && atleast)) {
const char *pos = a->pos == 3 ? argv3 : S_OR(a->argv[4], "");
int numbermatch = (ast_strlen_zero(pos) || strchr("123456789", pos[0])) ? 0 : 21;
if (a->n < 21 && numbermatch == 0) {
return complete_number(pos, 0, 0x7fffffff, a->n);
} else if (pos[0] == '0') {
if (a->n == 0) {
return ast_strdup("0");
}
} else if (a->n == (21 - numbermatch)) {
if (a->pos == 3 && !strncasecmp(argv3, "off", strlen(argv3))) {
return ast_strdup("off");
} else if (a->pos == 3 && !strncasecmp(argv3, "atleast", strlen(argv3))) {
return ast_strdup("atleast");
}
} else if (a->n == (22 - numbermatch) && a->pos == 3 && ast_strlen_zero(argv3)) {
return ast_strdup("atleast");
}
} else if ((a->pos == 4 && !atleast && strcasecmp(argv3, "off") && strcasecmp(argv3, "channel"))
|| (a->pos == 5 && atleast)) {
return ast_module_helper(a->line, a->word, a->pos, a->n, a->pos, AST_MODULE_HELPER_RUNNING);
}
return NULL;
}
/* all the above return, so we proceed with the handler.
* we are guaranteed to be called with argc >= e->args;
*/
return handle_debug_or_trace(DEBUG_HANDLER, e, cmd, a);
}
static char *handle_trace(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
int atleast = 0;
const char *argv3 = a->argv ? S_OR(a->argv[3], "") : "";
switch (cmd) {
case CLI_INIT:
e->command = "core set trace";
e->usage =
"Usage: core set trace [atleast] <level> [module]\n"
" core set trace off\n"
"\n"
" Sets level of trace messages to be displayed or\n"
" sets a module name to display trace messages from.\n"
" 0 or off means no messages should be displayed.\n";
return NULL;
case CLI_GENERATE:
if (!strcasecmp(argv3, "atleast")) {
atleast = 1;
}
if (a->pos == 3 || (a->pos == 4 && atleast)) {
const char *pos = a->pos == 3 ? argv3 : S_OR(a->argv[4], "");
int numbermatch = (ast_strlen_zero(pos) || strchr("123456789", pos[0])) ? 0 : 21;
if (a->n < 21 && numbermatch == 0) {
return complete_number(pos, 0, 0x7fffffff, a->n);
} else if (pos[0] == '0') {
if (a->n == 0) {
return ast_strdup("0");
}
} else if (a->n == (21 - numbermatch)) {
if (a->pos == 3 && !strncasecmp(argv3, "off", strlen(argv3))) {
return ast_strdup("off");
} else if (a->pos == 3 && !strncasecmp(argv3, "atleast", strlen(argv3))) {
return ast_strdup("atleast");
}
} else if (a->n == (22 - numbermatch) && a->pos == 3 && ast_strlen_zero(argv3)) {
return ast_strdup("atleast");
}
} else if ((a->pos == 4 && !atleast && strcasecmp(argv3, "off") && strcasecmp(argv3, "channel"))
|| (a->pos == 5 && atleast)) {
return ast_module_helper(a->line, a->word, a->pos, a->n, a->pos, AST_MODULE_HELPER_RUNNING);
}
return NULL;
}
/* all the above return, so we proceed with the handler.
* we are guaranteed to be called with argc >= e->args;
*/
return handle_debug_or_trace(TRACE_HANDLER, e, cmd, a);
}
static char *handle_verbose(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
int oldval;
int newlevel;
int atleast = 0;
int silent = 0;
const char *argv3 = a->argv ? S_OR(a->argv[3], "") : "";
switch (cmd) {
case CLI_INIT:
e->command = "core set verbose";
e->usage =
"Usage: core set verbose [atleast] <level> [silent]\n"
" core set verbose off\n"
"\n"
" Sets level of verbose messages to be displayed.\n"
" 0 or off means no verbose messages should be displayed.\n"
" The silent option means the command does not report what\n"
" happened to the verbose level.\n"
" Equivalent to -v[v[...]] on startup\n";
return NULL;
case CLI_GENERATE:
if (!strcasecmp(argv3, "atleast")) {
atleast = 1;
}
if (a->pos == 3 || (a->pos == 4 && atleast)) {
const char *pos = a->pos == 3 ? argv3 : S_OR(a->argv[4], "");
int numbermatch = (ast_strlen_zero(pos) || strchr("123456789", pos[0])) ? 0 : 21;
if (a->n < 21 && numbermatch == 0) {
return complete_number(pos, 0, 0x7fffffff, a->n);
} else if (pos[0] == '0') {
if (a->n == 0) {
return ast_strdup("0");
}
} else if (a->n == (21 - numbermatch)) {
if (a->pos == 3 && !strncasecmp(argv3, "off", strlen(argv3))) {
return ast_strdup("off");
} else if (a->pos == 3 && !strncasecmp(argv3, "atleast", strlen(argv3))) {
return ast_strdup("atleast");
}
} else if (a->n == (22 - numbermatch) && a->pos == 3 && ast_strlen_zero(argv3)) {
return ast_strdup("atleast");
}
} else if ((a->pos == 4 && !atleast && strcasecmp(argv3, "off"))
|| (a->pos == 5 && atleast)) {
const char *pos = S_OR(a->argv[a->pos], "");
if (a->n == 0 && !strncasecmp(pos, "silent", strlen(pos))) {
return ast_strdup("silent");
}
}
return NULL;
}
/* all the above return, so we proceed with the handler.
* we are guaranteed to be called with argc >= e->args;
*/
if (a->argc <= e->args) {
return CLI_SHOWUSAGE;
}
if (a->argc == e->args + 1 && !strcasecmp(a->argv[e->args], "off")) {
newlevel = 0;
} else {
if (!strcasecmp(a->argv[e->args], "atleast")) {
atleast = 1;
}
if (a->argc == e->args + atleast + 2
&& !strcasecmp(a->argv[e->args + atleast + 1], "silent")) {
silent = 1;
}
if (a->argc != e->args + atleast + silent + 1) {
return CLI_SHOWUSAGE;
}
if (sscanf(a->argv[e->args + atleast], "%30d", &newlevel) != 1) {
return CLI_SHOWUSAGE;
}
}
/* Update verbose level */
oldval = ast_verb_console_get();
if (!atleast || newlevel > oldval) {
ast_verb_console_set(newlevel);
} else {
newlevel = oldval;
}
if (silent) {
/* Be silent after setting the level. */
return CLI_SUCCESS;
}
/* Report verbose level status */
status_debug_verbose(a, VERBOSE_HANDLER, oldval, newlevel);
return CLI_SUCCESS;
}
static char *handle_logger_mute(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
switch (cmd) {
case CLI_INIT:
e->command = "logger mute";
e->usage =
"Usage: logger mute\n"
" Disables logging output to the current console, making it possible to\n"
" gather information without being disturbed by scrolling lines.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
if (a->argc < 2 || a->argc > 3)
return CLI_SHOWUSAGE;
if (a->argc == 3 && !strcasecmp(a->argv[2], "silent"))
ast_console_toggle_mute(a->fd, 1);
else
ast_console_toggle_mute(a->fd, 0);
return CLI_SUCCESS;
}
static char *handle_refresh(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
/* "module refresh <mod>" */
switch (cmd) {
case CLI_INIT:
e->command = "module refresh";
e->usage =
"Usage: module refresh <module name>\n"
" Unloads and loads the specified module into Asterisk.\n";
return NULL;
case CLI_GENERATE:
if (a->pos != e->args) {
return NULL;
}
return ast_module_helper(a->line, a->word, a->pos, a->n, a->pos, AST_MODULE_HELPER_UNLOAD);
}
if (a->argc != e->args + 1) {
return CLI_SHOWUSAGE;
}
if (ast_unload_resource(a->argv[e->args], AST_FORCE_SOFT)) {
ast_cli(a->fd, "Unable to unload resource %s\n", a->argv[e->args]);
return CLI_FAILURE;
}
if (ast_load_resource(a->argv[e->args])) {
ast_cli(a->fd, "Unable to load module %s\n", a->argv[e->args]);
return CLI_FAILURE;
}
ast_cli(a->fd, "Unloaded and loaded %s\n", a->argv[e->args]);
return CLI_SUCCESS;
}
static char *handle_unload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
/* "module unload mod_1 [mod_2 .. mod_N]" */
int x;
int force = AST_FORCE_SOFT;
const char *s;
switch (cmd) {
case CLI_INIT:
e->command = "module unload";
e->usage =
"Usage: module unload [-f|-h] <module_1> [<module_2> ... ]\n"
" Unloads the specified module from Asterisk. The -f\n"
" option causes the module to be unloaded even if it is\n"
" in use (may cause a crash) and the -h module causes the\n"
" module to be unloaded even if the module says it cannot, \n"
" which almost always will cause a crash.\n";
return NULL;
case CLI_GENERATE:
return ast_module_helper(a->line, a->word, a->pos, a->n, a->pos, AST_MODULE_HELPER_UNLOAD);
}
if (a->argc < e->args + 1)
return CLI_SHOWUSAGE;
x = e->args; /* first argument */
s = a->argv[x];
if (s[0] == '-') {
if (s[1] == 'f')
force = AST_FORCE_FIRM;
else if (s[1] == 'h')
force = AST_FORCE_HARD;
else
return CLI_SHOWUSAGE;
if (a->argc < e->args + 2) /* need at least one module name */
return CLI_SHOWUSAGE;
x++; /* skip this argument */
}
for (; x < a->argc; x++) {
if (ast_unload_resource(a->argv[x], force)) {
ast_cli(a->fd, "Unable to unload resource %s\n", a->argv[x]);
return CLI_FAILURE;
}
ast_cli(a->fd, "Unloaded %s\n", a->argv[x]);
}
return CLI_SUCCESS;
}
#define MODLIST_FORMAT "%-30s %-40.40s %-10d %-11s %13s\n"
#define MODLIST_FORMAT2 "%-30s %-40.40s %-10s %-11s %13s\n"
AST_MUTEX_DEFINE_STATIC(climodentrylock);
static int climodentryfd = -1;
static int modlist_modentry(const char *module, const char *description,
int usecnt, const char *status, const char *like,
enum ast_module_support_level support_level)
{
/* Comparing the like with the module */
if (strcasestr(module, like) ) {
ast_cli(climodentryfd, MODLIST_FORMAT, module, description, usecnt,
status, ast_module_support_level_to_string(support_level));
return 1;
}
return 0;
}
static void print_uptimestr(int fd, struct timeval timeval, const char *prefix, int printsec)
{
int x; /* the main part - years, weeks, etc. */
struct ast_str *out;
#define SECOND (1)
#define MINUTE (SECOND*60)
#define HOUR (MINUTE*60)
#define DAY (HOUR*24)
#define WEEK (DAY*7)
#define YEAR (DAY*365)
#define NEEDCOMMA(x) ((x) ? ", " : "") /* define if we need a comma */
if (timeval.tv_sec < 0) /* invalid, nothing to show */
return;
if (printsec) { /* plain seconds output */
ast_cli(fd, "%s%lu\n", prefix, (u_long)timeval.tv_sec);
return;
}
out = ast_str_alloca(256);
if (timeval.tv_sec > YEAR) {
x = (timeval.tv_sec / YEAR);
timeval.tv_sec -= (x * YEAR);
ast_str_append(&out, 0, "%d year%s%s", x, ESS(x), NEEDCOMMA(timeval.tv_sec));
}
if (timeval.tv_sec > WEEK) {
x = (timeval.tv_sec / WEEK);
timeval.tv_sec -= (x * WEEK);
ast_str_append(&out, 0, "%d week%s%s", x, ESS(x), NEEDCOMMA(timeval.tv_sec));
}
if (timeval.tv_sec > DAY) {
x = (timeval.tv_sec / DAY);
timeval.tv_sec -= (x * DAY);
ast_str_append(&out, 0, "%d day%s%s", x, ESS(x), NEEDCOMMA(timeval.tv_sec));
}
if (timeval.tv_sec > HOUR) {
x = (timeval.tv_sec / HOUR);
timeval.tv_sec -= (x * HOUR);
ast_str_append(&out, 0, "%d hour%s%s", x, ESS(x), NEEDCOMMA(timeval.tv_sec));
}
if (timeval.tv_sec > MINUTE) {
x = (timeval.tv_sec / MINUTE);
timeval.tv_sec -= (x * MINUTE);
ast_str_append(&out, 0, "%d minute%s%s", x, ESS(x), NEEDCOMMA(timeval.tv_sec));
}
x = timeval.tv_sec;
if (x > 0 || ast_str_strlen(out) == 0) {
/* if there is nothing, print 0 seconds */
ast_str_append(&out, 0, "%d second%s", x, ESS(x));
}
ast_cli(fd, "%s%s\n", prefix, ast_str_buffer(out));
}
static struct ast_cli_entry *cli_next(struct ast_cli_entry *e)
{
if (e) {
return AST_LIST_NEXT(e, list);
} else {
return AST_LIST_FIRST(&helpers);
}
}
static char * handle_showuptime(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct timeval curtime = ast_tvnow();
int printsec;
switch (cmd) {
case CLI_INIT:
e->command = "core show uptime [seconds]";
e->usage =
"Usage: core show uptime [seconds]\n"
" Shows Asterisk uptime information.\n"
" The seconds word returns the uptime in seconds only.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
/* regular handler */
if (a->argc == e->args && !strcasecmp(a->argv[e->args-1],"seconds"))
printsec = 1;
else if (a->argc == e->args-1)
printsec = 0;
else
return CLI_SHOWUSAGE;
if (ast_startuptime.tv_sec) {
print_uptimestr(a->fd, ast_tvsub(curtime, ast_startuptime), "System uptime: ", printsec);
}
if (ast_lastreloadtime.tv_sec) {
print_uptimestr(a->fd, ast_tvsub(curtime, ast_lastreloadtime), "Last reload: ", printsec);
}
return CLI_SUCCESS;
}
static char *handle_modlist(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
const char *like;
switch (cmd) {
case CLI_INIT:
e->command = "module show [like]";
e->usage =
"Usage: module show [like keyword]\n"
" Shows Asterisk modules currently in use, and usage statistics.\n";
return NULL;
case CLI_GENERATE:
if (a->pos == e->args) {
return ast_module_helper(a->line, a->word, a->pos, a->n, a->pos, AST_MODULE_HELPER_LOADED);
} else {
return NULL;
}
}
/* all the above return, so we proceed with the handler.
* we are guaranteed to have argc >= e->args
*/
if (a->argc == e->args - 1)
like = "";
else if (a->argc == e->args + 1 && !strcasecmp(a->argv[e->args-1], "like") )
like = a->argv[e->args];
else
return CLI_SHOWUSAGE;
ast_mutex_lock(&climodentrylock);
climodentryfd = a->fd; /* global, protected by climodentrylock */
ast_cli(a->fd, MODLIST_FORMAT2, "Module", "Description", "Use Count", "Status", "Support Level");
ast_cli(a->fd,"%d modules loaded\n", ast_update_module_list(modlist_modentry, like));
climodentryfd = -1;
ast_mutex_unlock(&climodentrylock);
return CLI_SUCCESS;
}
#undef MODLIST_FORMAT
#undef MODLIST_FORMAT2
static char *handle_showcalls(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
static const char * const completions[] = { "seconds", NULL };
struct timeval curtime = ast_tvnow();
int showuptime, printsec;
switch (cmd) {
case CLI_INIT:
e->command = "core show calls [uptime]";
e->usage =
"Usage: core show calls [uptime [seconds]]\n"
" Lists number of currently active calls and total number of calls\n"
" processed through PBX since last restart. If 'uptime' is specified\n"
" the system uptime is also displayed. If 'seconds' is specified in\n"
" addition to 'uptime', the system uptime is displayed in seconds.\n";
return NULL;
case CLI_GENERATE:
if (a->pos != e->args)
return NULL;
return ast_cli_complete(a->word, completions, a->n);
}
/* regular handler */
if (a->argc >= e->args && !strcasecmp(a->argv[e->args-1],"uptime")) {
showuptime = 1;
if (a->argc == e->args+1 && !strcasecmp(a->argv[e->args],"seconds"))
printsec = 1;
else if (a->argc == e->args)
printsec = 0;
else
return CLI_SHOWUSAGE;
} else if (a->argc == e->args-1) {
showuptime = 0;
printsec = 0;
} else
return CLI_SHOWUSAGE;
if (ast_option_maxcalls) {
ast_cli(a->fd, "%d of %d max active call%s (%5.2f%% of capacity)\n",
ast_active_calls(), ast_option_maxcalls, ESS(ast_active_calls()),
((double)ast_active_calls() / (double)ast_option_maxcalls) * 100.0);
} else {
ast_cli(a->fd, "%d active call%s\n", ast_active_calls(), ESS(ast_active_calls()));
}
ast_cli(a->fd, "%d call%s processed\n", ast_processed_calls(), ESS(ast_processed_calls()));
if (ast_startuptime.tv_sec && showuptime) {
print_uptimestr(a->fd, ast_tvsub(curtime, ast_startuptime), "System uptime: ", printsec);
}
return RESULT_SUCCESS;
}
static char *handle_chanlist(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
#define FORMAT_STRING "%-20.20s %-20.20s %-7.7s %-30.30s\n"
#define FORMAT_STRING2 "%-20.20s %-20.20s %-7.7s %-30.30s\n"
#define CONCISE_FORMAT_STRING "%s!%s!%s!%d!%s!%s!%s!%s!%s!%s!%d!%s!%s!%s\n"
#define VERBOSE_FORMAT_STRING "%-20.20s %-20.20s %-16.16s %4d %-7.7s %-12.12s %-25.25s %-15.15s %8.8s %-11.11s %-11.11s %-20.20s\n"
#define VERBOSE_FORMAT_STRING2 "%-20.20s %-20.20s %-16.16s %-4.4s %-7.7s %-12.12s %-25.25s %-15.15s %8.8s %-11.11s %-11.11s %-20.20s\n"
struct ao2_container *channels;
struct ao2_iterator it_chans;
struct ast_channel_snapshot *cs;
int numchans = 0, concise = 0, verbose = 0, count = 0;
switch (cmd) {
case CLI_INIT:
e->command = "core show channels [concise|verbose|count]";
e->usage =
"Usage: core show channels [concise|verbose|count]\n"
" Lists currently defined channels and some information about them. If\n"
" 'concise' is specified, the format is abridged and in a more easily\n"
" machine parsable format. If 'verbose' is specified, the output includes\n"
" more and longer fields. If 'count' is specified only the channel and call\n"
" count is output.\n"
" The 'concise' option is deprecated and will be removed from future versions\n"
" of Asterisk.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
if (a->argc == e->args) {
if (!strcasecmp(a->argv[e->args-1],"concise"))
concise = 1;
else if (!strcasecmp(a->argv[e->args-1],"verbose"))
verbose = 1;
else if (!strcasecmp(a->argv[e->args-1],"count"))
count = 1;
else
return CLI_SHOWUSAGE;
} else if (a->argc != e->args - 1)
return CLI_SHOWUSAGE;
channels = ast_channel_cache_by_name();
if (!count) {
if (!concise && !verbose)
ast_cli(a->fd, FORMAT_STRING2, "Channel", "Location", "State", "Application(Data)");
else if (verbose)
ast_cli(a->fd, VERBOSE_FORMAT_STRING2, "Channel", "Context", "Extension", "Priority", "State", "Application", "Data",
"CallerID", "Duration", "Accountcode", "PeerAccount", "BridgeID");
}
it_chans = ao2_iterator_init(channels, 0);
for (; (cs = ao2_iterator_next(&it_chans)); ao2_ref(cs, -1)) {
char durbuf[16] = "-";
if (!count) {
if ((concise || verbose) && !ast_tvzero(cs->base->creationtime)) {
int duration = (int)(ast_tvdiff_ms(ast_tvnow(), cs->base->creationtime) / 1000);
if (verbose) {
int durh = duration / 3600;
int durm = (duration % 3600) / 60;
int durs = duration % 60;
snprintf(durbuf, sizeof(durbuf), "%02d:%02d:%02d", durh, durm, durs);
} else {
snprintf(durbuf, sizeof(durbuf), "%d", duration);
}
}
if (concise) {
ast_cli(a->fd, CONCISE_FORMAT_STRING, cs->base->name, cs->dialplan->context, cs->dialplan->exten, cs->dialplan->priority, ast_state2str(cs->state),
S_OR(cs->dialplan->appl, "(None)"),
cs->dialplan->data,
cs->caller->number,
cs->base->accountcode,
cs->peer->account,
cs->amaflags,
durbuf,
cs->bridge->id,
cs->base->uniqueid);
} else if (verbose) {
ast_cli(a->fd, VERBOSE_FORMAT_STRING, cs->base->name, cs->dialplan->context, cs->dialplan->exten, cs->dialplan->priority, ast_state2str(cs->state),
S_OR(cs->dialplan->appl, "(None)"),
S_OR(cs->dialplan->data, "(Empty)"),
cs->caller->number,
durbuf,
cs->base->accountcode,
cs->peer->account,
cs->bridge->id);
} else {
char locbuf[40] = "(None)";
char appdata[40] = "(None)";
if (!ast_strlen_zero(cs->dialplan->context) && !ast_strlen_zero(cs->dialplan->exten)) {
snprintf(locbuf, sizeof(locbuf), "%s@%s:%d", cs->dialplan->exten, cs->dialplan->context, cs->dialplan->priority);
}
if (!ast_strlen_zero(cs->dialplan->appl)) {
snprintf(appdata, sizeof(appdata), "%s(%s)", cs->dialplan->appl, S_OR(cs->dialplan->data, ""));
}
ast_cli(a->fd, FORMAT_STRING, cs->base->name, locbuf, ast_state2str(cs->state), appdata);
}
}
}
ao2_iterator_destroy(&it_chans);
if (!concise) {
numchans = ast_active_channels();
ast_cli(a->fd, "%d active channel%s\n", numchans, ESS(numchans));
if (ast_option_maxcalls)
ast_cli(a->fd, "%d of %d max active call%s (%5.2f%% of capacity)\n",
ast_active_calls(), ast_option_maxcalls, ESS(ast_active_calls()),
((double)ast_active_calls() / (double)ast_option_maxcalls) * 100.0);
else
ast_cli(a->fd, "%d active call%s\n", ast_active_calls(), ESS(ast_active_calls()));
ast_cli(a->fd, "%d call%s processed\n", ast_processed_calls(), ESS(ast_processed_calls()));
}
ao2_ref(channels, -1);
return CLI_SUCCESS;
#undef FORMAT_STRING
#undef FORMAT_STRING2
#undef CONCISE_FORMAT_STRING
#undef VERBOSE_FORMAT_STRING
#undef VERBOSE_FORMAT_STRING2
}
static char *handle_softhangup(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct ast_channel *c = NULL;
static const char * const completions[] = { "all", NULL };
char *complete;
switch (cmd) {
case CLI_INIT:
e->command = "channel request hangup";
e->usage =
"Usage: channel request hangup <channel>|<all>\n"
" Request that a channel be hung up. The hangup takes effect\n"
" the next time the driver reads or writes from the channel.\n"
" If 'all' is specified instead of a channel name, all channels\n"
" will see the hangup request.\n";
return NULL;
case CLI_GENERATE:
if (a->pos != e->args) {
return NULL;
}
complete = ast_cli_complete(a->word, completions, a->n);
if (!complete) {
complete = ast_complete_channels(a->line, a->word, a->pos, a->n - 1, e->args);
}
return complete;
}
if (a->argc != 4) {
return CLI_SHOWUSAGE;
}
if (!strcasecmp(a->argv[3], "all")) {
struct ast_channel_iterator *iter = NULL;
if (!(iter = ast_channel_iterator_all_new())) {
return CLI_FAILURE;
}
for (; iter && (c = ast_channel_iterator_next(iter)); ast_channel_unref(c)) {
ast_channel_lock(c);
ast_cli(a->fd, "Requested Hangup on channel '%s'\n", ast_channel_name(c));
ast_softhangup(c, AST_SOFTHANGUP_EXPLICIT);
ast_channel_unlock(c);
}
ast_channel_iterator_destroy(iter);
} else if ((c = ast_channel_get_by_name(a->argv[3]))) {
ast_channel_lock(c);
ast_cli(a->fd, "Requested Hangup on channel '%s'\n", ast_channel_name(c));
ast_softhangup(c, AST_SOFTHANGUP_EXPLICIT);
ast_channel_unlock(c);
c = ast_channel_unref(c);
} else {
ast_cli(a->fd, "%s is not a known channel\n", a->argv[3]);
}
return CLI_SUCCESS;
}
/*! \brief handles CLI command 'cli show permissions' */
static char *handle_cli_show_permissions(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct usergroup_cli_perm *cp;
struct cli_perm *perm;
struct passwd *pw = NULL;
struct group *gr = NULL;
switch (cmd) {
case CLI_INIT:
e->command = "cli show permissions";
e->usage =
"Usage: cli show permissions\n"
" Shows CLI configured permissions.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
AST_RWLIST_RDLOCK(&cli_perms);
AST_LIST_TRAVERSE(&cli_perms, cp, list) {
if (cp->uid >= 0) {
pw = getpwuid(cp->uid);
if (pw) {
ast_cli(a->fd, "user: %s [uid=%d]\n", pw->pw_name, cp->uid);
}
} else {
gr = getgrgid(cp->gid);
if (gr) {
ast_cli(a->fd, "group: %s [gid=%d]\n", gr->gr_name, cp->gid);
}
}
ast_cli(a->fd, "Permissions:\n");
if (cp->perms) {
AST_LIST_TRAVERSE(cp->perms, perm, list) {
ast_cli(a->fd, "\t%s -> %s\n", perm->permit ? "permit" : "deny", perm->command);
}
}
ast_cli(a->fd, "\n");
}
AST_RWLIST_UNLOCK(&cli_perms);
return CLI_SUCCESS;
}
/*! \brief handles CLI command 'cli reload permissions' */
static char *handle_cli_reload_permissions(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
switch (cmd) {
case CLI_INIT:
e->command = "cli reload permissions";
e->usage =
"Usage: cli reload permissions\n"
" Reload the 'cli_permissions.conf' file.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
ast_cli_perms_init(1);
return CLI_SUCCESS;
}
/*! \brief handles CLI command 'cli check permissions' */
static char *handle_cli_check_permissions(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct passwd *pw = NULL;
struct group *gr;
int gid = -1, uid = -1;
char command[AST_MAX_ARGS] = "";
struct ast_cli_entry *ce = NULL;
int found = 0;
char *group, *tmp;
switch (cmd) {
case CLI_INIT:
e->command = "cli check permissions";
e->usage =
"Usage: cli check permissions {<username>|@<groupname>|<username>@<groupname>} [<command>]\n"
" Check permissions config for a user@group or list the allowed commands for the specified user.\n"
" The username or the groupname may be omitted.\n";
return NULL;
case CLI_GENERATE:
if (a->pos >= 4) {
return ast_cli_generator(a->line + strlen("cli check permissions") + strlen(a->argv[3]) + 1, a->word, a->n);
}
return NULL;
}
if (a->argc < 4) {
return CLI_SHOWUSAGE;
}
tmp = ast_strdupa(a->argv[3]);
group = strchr(tmp, '@');
if (group) {
gr = getgrnam(&group[1]);
if (!gr) {
ast_cli(a->fd, "Unknown group '%s'\n", &group[1]);
return CLI_FAILURE;
}
group[0] = '\0';
gid = gr->gr_gid;
}
if (!group && ast_strlen_zero(tmp)) {
ast_cli(a->fd, "You didn't supply a username\n");
} else if (!ast_strlen_zero(tmp) && !(pw = getpwnam(tmp))) {
ast_cli(a->fd, "Unknown user '%s'\n", tmp);
return CLI_FAILURE;
} else if (pw) {
uid = pw->pw_uid;
}
if (a->argc == 4) {
while ((ce = cli_next(ce))) {
/* Hide commands that start with '_' */
if (ce->_full_cmd[0] == '_') {
continue;
}
if (cli_has_permissions(uid, gid, ce->_full_cmd)) {
ast_cli(a->fd, "%30.30s %s\n", ce->_full_cmd, S_OR(ce->summary, "<no description available>"));
found++;
}
}
if (!found) {
ast_cli(a->fd, "You are not allowed to run any command on Asterisk\n");
}
} else {
ast_join(command, sizeof(command), a->argv + 4);
ast_cli(a->fd, "%s '%s%s%s' is %s to run command: '%s'\n", uid >= 0 ? "User" : "Group", tmp,
group && uid >= 0 ? "@" : "",
group ? &group[1] : "",
cli_has_permissions(uid, gid, command) ? "allowed" : "not allowed", command);
}
return CLI_SUCCESS;
}
static char *__ast_cli_generator(const char *text, const char *word, int state, int lock);
static char *handle_commandmatchesarray(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
char *buf, *obuf;
int buflen = 2048;
int len = 0;
char **matches;
int x, matchlen;
switch (cmd) {
case CLI_INIT:
e->command = "_command matchesarray";
e->usage =
"Usage: _command matchesarray \"<line>\" text \n"
" This function is used internally to help with command completion and should.\n"
" never be called by the user directly.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
if (a->argc != 4)
return CLI_SHOWUSAGE;
if (!(buf = ast_malloc(buflen)))
return CLI_FAILURE;
buf[len] = '\0';
matches = ast_cli_completion_matches(a->argv[2], a->argv[3]);
if (matches) {
for (x=0; matches[x]; x++) {
matchlen = strlen(matches[x]) + 1;
if (len + matchlen >= buflen) {
buflen += matchlen * 3;
obuf = buf;
if (!(buf = ast_realloc(obuf, buflen)))
/* Memory allocation failure... Just free old buffer and be done */
ast_free(obuf);
}
if (buf)
len += sprintf( buf + len, "%s ", matches[x]);
ast_free(matches[x]);
matches[x] = NULL;
}
ast_free(matches);
}
if (buf) {
ast_cli(a->fd, "%s%s",buf, AST_CLI_COMPLETE_EOF);
ast_free(buf);
} else
ast_cli(a->fd, "NULL\n");
return CLI_SUCCESS;
}
struct channel_set_debug_args {
int fd;
int is_off;
};
static int channel_set_debug(void *obj, void *arg, void *data, int flags)
{
struct ast_channel *chan = obj;
struct channel_set_debug_args *args = data;
ast_channel_lock(chan);
if (!(ast_channel_fin(chan) & DEBUGCHAN_FLAG) || !(ast_channel_fout(chan) & DEBUGCHAN_FLAG)) {
if (args->is_off) {
ast_channel_fin_set(chan, ast_channel_fin(chan) & ~DEBUGCHAN_FLAG);
ast_channel_fout_set(chan, ast_channel_fout(chan) & ~DEBUGCHAN_FLAG);
} else {
ast_channel_fin_set(chan, ast_channel_fin(chan) | DEBUGCHAN_FLAG);
ast_channel_fout_set(chan, ast_channel_fout(chan) | DEBUGCHAN_FLAG);
}
ast_cli(args->fd, "Debugging %s on channel %s\n", args->is_off ? "disabled" : "enabled",
ast_channel_name(chan));
}
ast_channel_unlock(chan);
return 0;
}
static char *handle_core_set_debug_channel(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct ast_channel *c = NULL;
static const char * const completions_all[] = { "all", NULL };
static const char * const completions_off[] = { "off", NULL };
struct channel_set_debug_args args = {
.fd = a->fd,
};
switch (cmd) {
case CLI_INIT:
e->command = "core set debug channel";
e->usage =
"Usage: core set debug channel <all|channel> [off]\n"
" Enables/disables debugging on all or on a specific channel.\n";
return NULL;
case CLI_GENERATE:
if (a->pos == 4) {
char *complete = ast_cli_complete(a->word, completions_all, a->n);
if (!complete) {
complete = ast_complete_channels(a->line, a->word, a->pos, a->n - 1, e->args);
}
return complete;
} else if (a->pos == 5) {
return ast_cli_complete(a->word, completions_off, a->n);
}
return NULL;
}
if (cmd == (CLI_HANDLER + 1000)) {
/* called from handle_nodebugchan_deprecated */
args.is_off = 1;
} else if (a->argc == e->args + 2) {
/* 'core set debug channel {all|chan_id}' */
if (!strcasecmp(a->argv[e->args + 1], "off"))
args.is_off = 1;
else
return CLI_SHOWUSAGE;
} else if (a->argc != e->args + 1) {
return CLI_SHOWUSAGE;
}
if (!strcasecmp("all", a->argv[e->args])) {
if (args.is_off) {
global_fin &= ~DEBUGCHAN_FLAG;
global_fout &= ~DEBUGCHAN_FLAG;
} else {
global_fin |= DEBUGCHAN_FLAG;
global_fout |= DEBUGCHAN_FLAG;
}
ast_channel_callback(channel_set_debug, NULL, &args, OBJ_NODATA | OBJ_MULTIPLE);
} else {
if ((c = ast_channel_get_by_name(a->argv[e->args]))) {
channel_set_debug(c, NULL, &args, 0);
ast_channel_unref(c);
} else {
ast_cli(a->fd, "No such channel %s\n", a->argv[e->args]);
}
}
ast_cli(a->fd, "Debugging on new channels is %s\n", args.is_off ? "disabled" : "enabled");
return CLI_SUCCESS;
}
static char *handle_debug_category(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
const char *argv4 = a->argv ? S_OR(a->argv[4], "") : "";
int offset = strncasecmp(argv4, "off", strlen(argv4)) ? 0 : 1;
switch (cmd) {
case CLI_INIT:
e->command = "core set debug category";
e->usage =
"Usage: core set debug category <category>[:<sublevel>] [category[:<sublevel] ...]\n"
" core set debug category off [<category> [<category>] ...]\n\n"
" Allows enabling and disabling debug logging categories.\n"
" When a category is enabled all relevant debug messages are logged\n"
" for a given category. However, if a sublevel is specified only\n"
" those categorized messages at or below the coded debug sublevel\n"
" are logged.\n";
return NULL;
case CLI_GENERATE:
if (a->pos < e->args) {
return NULL;
}
if (a->pos == 4 && offset) {
ast_cli_completion_add(ast_strdup("off"));
}
return ast_debug_category_complete(a->argv + 4,
a->pos - e->args, a->word, a->n - 1);
}
if (a->argc <= e->args) {
return CLI_SHOWUSAGE;
}
ast_debug_category_set_sublevels(a->argv + e->args + offset, a->argc - e->args - offset,
offset ? AST_LOG_CATEGORY_DISABLED : AST_LOG_CATEGORY_ENABLED);
return CLI_SUCCESS;
}
static char *handle_nodebugchan_deprecated(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
char *res;
switch (cmd) {
case CLI_INIT:
e->command = "no debug channel";
return NULL;
case CLI_HANDLER:
/* exit out of switch statement */
break;
default:
return NULL;
}
if (a->argc != e->args + 1)
return CLI_SHOWUSAGE;
/* add a 'magic' value to the CLI_HANDLER command so that
* handle_core_set_debug_channel() will act as if 'off'
* had been specified as part of the command
*/
res = handle_core_set_debug_channel(e, CLI_HANDLER + 1000, a);
return res;
}
static char *handle_showchan(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
struct ast_channel *chan;
struct timeval now;
char cdrtime[256];
struct ast_str *obuf;/*!< Buffer for CDR variables. */
struct ast_str *output;/*!< Accumulation buffer for all output. */
long elapsed_seconds=0;
int hour=0, min=0, sec=0;
struct ast_var_t *var;
struct ast_str *write_transpath = ast_str_alloca(256);
struct ast_str *read_transpath = ast_str_alloca(256);
struct ast_str *codec_buf = ast_str_alloca(AST_FORMAT_CAP_NAMES_LEN);
struct ast_bridge *bridge;
ast_callid callid;
char callid_buf[32];
int stream_num;
switch (cmd) {
case CLI_INIT:
e->command = "core show channel";
e->usage =
"Usage: core show channel <channel>\n"
" Shows lots of information about the specified channel.\n";
return NULL;
case CLI_GENERATE:
return ast_complete_channels(a->line, a->word, a->pos, a->n, 3);
}
if (a->argc != 4) {
return CLI_SHOWUSAGE;
}
obuf = ast_str_thread_get(&ast_str_thread_global_buf, 16);
if (!obuf) {
return CLI_FAILURE;
}
chan = ast_channel_get_by_name(a->argv[3]);
if (!chan) {
ast_cli(a->fd, "%s is not a known channel\n", a->argv[3]);
return CLI_SUCCESS;
}
output = ast_str_create(8192);
if (!output) {
ast_channel_unref(chan);
return CLI_FAILURE;
}
now = ast_tvnow();
ast_channel_lock(chan);
if (!ast_tvzero(ast_channel_creationtime(chan))) {
elapsed_seconds = now.tv_sec - ast_channel_creationtime(chan).tv_sec;
hour = elapsed_seconds / 3600;
min = (elapsed_seconds % 3600) / 60;
sec = elapsed_seconds % 60;
snprintf(cdrtime, sizeof(cdrtime), "%dh%dm%ds", hour, min, sec);
} else {
strcpy(cdrtime, "N/A");
}
ast_translate_path_to_str(ast_channel_writetrans(chan), &write_transpath);
ast_translate_path_to_str(ast_channel_readtrans(chan), &read_transpath);
bridge = ast_channel_get_bridge(chan);
callid_buf[0] = '\0';
callid = ast_channel_callid(chan);
if (callid) {
ast_callid_strnprint(callid_buf, sizeof(callid_buf), callid);
}
ast_str_append(&output, 0,
" -- General --\n"
" Name: %s\n"
" Type: %s\n"
" UniqueID: %s\n"
" LinkedID: %s\n"
" Caller ID: %s\n"
" Caller ID Name: %s\n"
"Connected Line ID: %s\n"
"Connected Line ID Name: %s\n"
"Eff. Connected Line ID: %s\n"
"Eff. Connected Line ID Name: %s\n"
" DNID Digits: %s\n"
" Language: %s\n"
" State: %s (%u)\n"
" NativeFormats: %s\n"
" WriteFormat: %s\n"
" ReadFormat: %s\n"
" WriteTranscode: %s %s\n"
" ReadTranscode: %s %s\n"
" Time to Hangup: %ld\n"
" Elapsed Time: %s\n"
" Bridge ID: %s\n"
" -- PBX --\n"
" Context: %s\n"
" Extension: %s\n"
" Priority: %d\n"
" Call Group: %llu\n"
" Pickup Group: %llu\n"
" Application: %s\n"
" Data: %s\n"
" Call Identifer: %s\n",
ast_channel_name(chan),
ast_channel_tech(chan)->type,
ast_channel_uniqueid(chan),
ast_channel_linkedid(chan),
S_COR(ast_channel_caller(chan)->id.number.valid,
ast_channel_caller(chan)->id.number.str, "(N/A)"),
S_COR(ast_channel_caller(chan)->id.name.valid,
ast_channel_caller(chan)->id.name.str, "(N/A)"),
S_COR(ast_channel_connected(chan)->id.number.valid,
ast_channel_connected(chan)->id.number.str, "(N/A)"),
S_COR(ast_channel_connected(chan)->id.name.valid,
ast_channel_connected(chan)->id.name.str, "(N/A)"),
S_COR(ast_channel_connected_effective_id(chan).number.valid,
ast_channel_connected_effective_id(chan).number.str, "(N/A)"),
S_COR(ast_channel_connected_effective_id(chan).name.valid,
ast_channel_connected_effective_id(chan).name.str, "(N/A)"),
S_OR(ast_channel_dialed(chan)->number.str, "(N/A)"),
ast_channel_language(chan),
ast_state2str(ast_channel_state(chan)),
ast_channel_state(chan),
ast_format_cap_get_names(ast_channel_nativeformats(chan), &codec_buf),
ast_format_get_name(ast_channel_writeformat(chan)),
ast_format_get_name(ast_channel_readformat(chan)),
ast_str_strlen(write_transpath) ? "Yes" : "No",
ast_str_buffer(write_transpath),
ast_str_strlen(read_transpath) ? "Yes" : "No",
ast_str_buffer(read_transpath),
(long)ast_channel_whentohangup(chan)->tv_sec,
cdrtime,
bridge ? bridge->uniqueid : "(Not bridged)",
ast_channel_context(chan),
ast_channel_exten(chan),
ast_channel_priority(chan),
ast_channel_callgroup(chan),
ast_channel_pickupgroup(chan),
S_OR(ast_channel_appl(chan), "(N/A)"),
S_OR(ast_channel_data(chan), "(Empty)"),
S_OR(callid_buf, "(None)")
);
ast_str_append(&output, 0, " Variables:\n");
AST_LIST_TRAVERSE(ast_channel_varshead(chan), var, entries) {
ast_str_append(&output, 0, "%s=%s\n", ast_var_name(var), ast_var_value(var));
}
if (!(ast_channel_tech(chan)->properties & AST_CHAN_TP_INTERNAL)
&& ast_cdr_serialize_variables(ast_channel_name(chan), &obuf, '=', '\n')) {
ast_str_append(&output, 0, " CDR Variables:\n%s\n", ast_str_buffer(obuf));
}
ast_str_append(&output, 0, " -- Streams --\n");
for (stream_num = 0; stream_num < ast_stream_topology_get_count(ast_channel_get_stream_topology(chan)); stream_num++) {
struct ast_stream *stream = ast_stream_topology_get_stream(ast_channel_get_stream_topology(chan), stream_num);
struct ast_variable *metadata = ast_stream_get_metadata_list(stream);
ast_str_append(&output, 0,
"Name: %s\n"
" Type: %s\n"
" State: %s\n"
" Group: %d\n"
" Formats: %s\n"
" Metadata:\n",
ast_stream_get_name(stream),
ast_codec_media_type2str(ast_stream_get_type(stream)),
ast_stream_state2str(ast_stream_get_state(stream)),
ast_stream_get_group(stream),
ast_format_cap_get_names(ast_stream_get_formats(stream), &codec_buf)
);
if (metadata) {
struct ast_variable *v;
for(v = metadata; v; v = v->next) {
ast_str_append(&output, 0, " %s: %s\n", v->name, v->value);
}
ast_variables_destroy(metadata);
}
}
ast_channel_unlock(chan);
ast_cli(a->fd, "%s", ast_str_buffer(output));
ast_free(output);
ao2_cleanup(bridge);
ast_channel_unref(chan);
return CLI_SUCCESS;
}
/*
* helper function to generate CLI matches from a fixed set of values.
* A NULL word is acceptable.
*/
char *ast_cli_complete(const char *word, const char * const choices[], int state)
{
int i, which = 0, len;
len = ast_strlen_zero(word) ? 0 : strlen(word);
for (i = 0; choices[i]; i++) {
if ((!len || !strncasecmp(word, choices[i], len)) && ++which > state) {
if (state != -1) {
return ast_strdup(choices[i]);
}
if (ast_cli_completion_add(ast_strdup(choices[i]))) {
return NULL;
}
}
}
return NULL;
}
char *ast_complete_channels(const char *line, const char *word, int pos, int state, int rpos)
{
int wordlen = strlen(word), which = 0;
struct ao2_container *cached_channels;
char *ret = NULL;
struct ao2_iterator iter;
struct ast_channel_snapshot *snapshot;
if (pos != rpos) {
return NULL;
}
cached_channels = ast_channel_cache_all();
iter = ao2_iterator_init(cached_channels, 0);
for (; (snapshot = ao2_iterator_next(&iter)); ao2_ref(snapshot, -1)) {
if (!strncasecmp(word, snapshot->base->name, wordlen) && (++which > state)) {
if (state != -1) {
ret = ast_strdup(snapshot->base->name);
ao2_ref(snapshot, -1);
break;
}
if (ast_cli_completion_add(ast_strdup(snapshot->base->name))) {
ao2_ref(snapshot, -1);
break;
}
}
}
ao2_iterator_destroy(&iter);
ao2_ref(cached_channels, -1);
return ret;
}
static char *group_show_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
#define FORMAT_STRING "%-25s %-20s %-20s\n"
struct ast_group_info *gi = NULL;
int numchans = 0;
regex_t regexbuf;
int havepattern = 0;
switch (cmd) {
case CLI_INIT:
e->command = "group show channels";
e->usage =
"Usage: group show channels [pattern]\n"
" Lists all currently active channels with channel group(s) specified.\n"
" Optional regular expression pattern is matched to group names for each\n"
" channel.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
if (a->argc < 3 || a->argc > 4)
return CLI_SHOWUSAGE;
if (a->argc == 4) {
if (regcomp(&regexbuf, a->argv[3], REG_EXTENDED | REG_NOSUB))
return CLI_SHOWUSAGE;
havepattern = 1;
}
ast_cli(a->fd, FORMAT_STRING, "Channel", "Group", "Category");
ast_app_group_list_rdlock();
gi = ast_app_group_list_head();
while (gi) {
if (!havepattern || !regexec(&regexbuf, gi->group, 0, NULL, 0)) {
ast_cli(a->fd, FORMAT_STRING, ast_channel_name(gi->chan), gi->group, (ast_strlen_zero(gi->category) ? "(default)" : gi->category));
numchans++;
}
gi = AST_LIST_NEXT(gi, group_list);
}
ast_app_group_list_unlock();
if (havepattern)
regfree(&regexbuf);
ast_cli(a->fd, "%d active channel%s\n", numchans, ESS(numchans));
return CLI_SUCCESS;
#undef FORMAT_STRING
}
static char *handle_cli_wait_fullybooted(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
switch (cmd) {
case CLI_INIT:
e->command = "core waitfullybooted";
e->usage =
"Usage: core waitfullybooted\n"
" Wait until Asterisk has fully booted.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
while (!ast_test_flag(&ast_options, AST_OPT_FLAG_FULLY_BOOTED)) {
usleep(100);
}
ast_cli(a->fd, "Asterisk has fully booted.\n");
return CLI_SUCCESS;
}
#ifdef HAVE_MALLOC_TRIM
/*!
* \internal
* \brief Attempt to reclaim unused heap memory.
*
* Users have reported that asterisk will sometimes be killed because it can't allocate
* more than around 3G of memory on a 32 bit system.
*
* Using malloc_trim() will help us to determine if it's because there's a leak or because
* the heap is so fragmented that there isn't enough contiguous memory available.
*
* \note malloc_trim() is a GNU extension and is therefore not portable.
*/
static char *handle_cli_malloc_trim(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
extern int malloc_trim(size_t __pad) __THROW;
switch (cmd) {
case CLI_INIT:
e->command = "malloc trim";
e->usage =
"Usage: malloc trim\n"
" Try to give excess memory back to the OS.\n";
return NULL;
case CLI_GENERATE:
return NULL;
}
if (malloc_trim(0)) {
ast_cli(a->fd, "Returned some memory to the OS.\n");
} else {
ast_cli(a->fd, "No memory returned to the OS.\n");
}
return CLI_SUCCESS;
}
#endif
static char *handle_help(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static struct ast_cli_entry cli_cli[] = {
AST_CLI_DEFINE(handle_commandmatchesarray, "Returns command matches array"),
AST_CLI_DEFINE(handle_debug_category, "Enable/disable debugging categories"),
AST_CLI_DEFINE(handle_debug, "Set level of debug chattiness"),
AST_CLI_DEFINE(handle_trace, "Set level of trace chattiness"),
AST_CLI_DEFINE(handle_verbose, "Set level of verbose chattiness"),
AST_CLI_DEFINE(handle_help, "Display help list, or specific help on a command"),
AST_CLI_DEFINE(handle_logger_mute, "Toggle logging output to a console"),
AST_CLI_DEFINE(handle_modlist, "List modules and info"),
AST_CLI_DEFINE(handle_load, "Load a module by name"),
AST_CLI_DEFINE(handle_reload, "Reload configuration for a module"),
AST_CLI_DEFINE(handle_core_reload, "Global reload"),
AST_CLI_DEFINE(handle_unload, "Unload a module by name"),
AST_CLI_DEFINE(handle_refresh, "Completely unloads and loads a module by name"),
AST_CLI_DEFINE(handle_showuptime, "Show uptime information"),
AST_CLI_DEFINE(handle_cli_reload_permissions, "Reload CLI permissions config"),
AST_CLI_DEFINE(handle_cli_show_permissions, "Show CLI permissions"),
AST_CLI_DEFINE(handle_cli_check_permissions, "Try a permissions config for a user"),
AST_CLI_DEFINE(handle_cli_wait_fullybooted, "Wait for Asterisk to be fully booted"),
#ifdef HAVE_MALLOC_TRIM
AST_CLI_DEFINE(handle_cli_malloc_trim, "Return excess memory to the OS"),
#endif
};
static struct ast_cli_entry cli_channels_cli[] = {
AST_CLI_DEFINE(handle_nodebugchan_deprecated, "Disable debugging on channel(s)"),
AST_CLI_DEFINE(handle_chanlist, "Display information on channels"),
AST_CLI_DEFINE(handle_showcalls, "Display information on calls"),
AST_CLI_DEFINE(handle_showchan, "Display information on a specific channel"),
AST_CLI_DEFINE(handle_core_set_debug_channel, "Enable/disable debugging on a channel"),
AST_CLI_DEFINE(group_show_channels, "Display active channels with group(s)"),
AST_CLI_DEFINE(handle_softhangup, "Request a hangup on a given channel"),
};
/*!
* Some regexp characters in cli arguments are reserved and used as separators.
*/
static const char cli_rsvd[] = "[]{}|*%";
/*!
* initialize the _full_cmd string and related parameters,
* return 0 on success, -1 on error.
*/
static int set_full_cmd(struct ast_cli_entry *e)
{
int i;
char buf[80];
ast_join(buf, sizeof(buf), e->cmda);
e->_full_cmd = ast_strdup(buf);
if (!e->_full_cmd) {
ast_log(LOG_WARNING, "-- cannot allocate <%s>\n", buf);
return -1;
}
e->cmdlen = strcspn(e->_full_cmd, cli_rsvd);
for (i = 0; e->cmda[i]; i++)
;
e->args = i;
return 0;
}
/*! \brief cleanup (free) cli_perms linkedlist. */
static void destroy_user_perms(void)
{
struct cli_perm *perm;
struct usergroup_cli_perm *user_perm;
AST_RWLIST_WRLOCK(&cli_perms);
while ((user_perm = AST_LIST_REMOVE_HEAD(&cli_perms, list))) {
while ((perm = AST_LIST_REMOVE_HEAD(user_perm->perms, list))) {
ast_free(perm->command);
ast_free(perm);
}
ast_free(user_perm);
}
AST_RWLIST_UNLOCK(&cli_perms);
}
int ast_cli_perms_init(int reload)
{
struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
struct ast_config *cfg;
char *cat = NULL;
struct ast_variable *v;
struct usergroup_cli_perm *user_group, *cp_entry;
struct cli_perm *perm = NULL;
struct passwd *pw;
struct group *gr;
if (ast_mutex_trylock(&permsconfiglock)) {
ast_log(LOG_NOTICE, "You must wait until last 'cli reload permissions' command finish\n");
return 1;
}
cfg = ast_config_load2(perms_config, "" /* core, can't reload */, config_flags);
if (!cfg) {
ast_mutex_unlock(&permsconfiglock);
return 1;
} else if (cfg == CONFIG_STATUS_FILEUNCHANGED) {
ast_mutex_unlock(&permsconfiglock);
return 0;
}
/* free current structures. */
destroy_user_perms();
while ((cat = ast_category_browse(cfg, cat))) {
if (!strcasecmp(cat, "general")) {
/* General options */
for (v = ast_variable_browse(cfg, cat); v; v = v->next) {
if (!strcasecmp(v->name, "default_perm")) {
cli_default_perm = (!strcasecmp(v->value, "permit")) ? 1: 0;
}
}
continue;
}
/* users or groups */
gr = NULL, pw = NULL;
if (cat[0] == '@') {
/* This is a group */
gr = getgrnam(&cat[1]);
if (!gr) {
ast_log (LOG_WARNING, "Unknown group '%s'\n", &cat[1]);
continue;
}
} else {
/* This is a user */
pw = getpwnam(cat);
if (!pw) {
ast_log (LOG_WARNING, "Unknown user '%s'\n", cat);
continue;
}
}
user_group = NULL;
/* Check for duplicates */
AST_RWLIST_WRLOCK(&cli_perms);
AST_LIST_TRAVERSE(&cli_perms, cp_entry, list) {
if ((pw && cp_entry->uid == pw->pw_uid) || (gr && cp_entry->gid == gr->gr_gid)) {
/* if it is duplicated, just added this new settings, to
the current list. */
user_group = cp_entry;
break;
}
}
AST_RWLIST_UNLOCK(&cli_perms);
if (!user_group) {
/* alloc space for the new user config. */
user_group = ast_calloc(1, sizeof(*user_group));
if (!user_group) {
continue;
}
user_group->uid = (pw ? pw->pw_uid : -1);
user_group->gid = (gr ? gr->gr_gid : -1);
user_group->perms = ast_calloc(1, sizeof(*user_group->perms));
if (!user_group->perms) {
ast_free(user_group);
continue;
}
}
for (v = ast_variable_browse(cfg, cat); v; v = v->next) {
if (ast_strlen_zero(v->value)) {
/* we need to check this condition cause it could break security. */
ast_log(LOG_WARNING, "Empty permit/deny option in user '%s'\n", cat);
continue;
}
if (!strcasecmp(v->name, "permit")) {
perm = ast_calloc(1, sizeof(*perm));
if (perm) {
perm->permit = 1;
perm->command = ast_strdup(v->value);
}
} else if (!strcasecmp(v->name, "deny")) {
perm = ast_calloc(1, sizeof(*perm));
if (perm) {
perm->permit = 0;
perm->command = ast_strdup(v->value);
}
} else {
/* up to now, only 'permit' and 'deny' are possible values. */
ast_log(LOG_WARNING, "Unknown '%s' option\n", v->name);
continue;
}
if (perm) {
/* Added the permission to the user's list. */
AST_LIST_INSERT_TAIL(user_group->perms, perm, list);
perm = NULL;
}
}
AST_RWLIST_WRLOCK(&cli_perms);
AST_RWLIST_INSERT_TAIL(&cli_perms, user_group, list);
AST_RWLIST_UNLOCK(&cli_perms);
}
ast_config_destroy(cfg);
ast_mutex_unlock(&permsconfiglock);
return 0;
}
static void cli_shutdown(void)
{
ast_cli_unregister_multiple(cli_cli, ARRAY_LEN(cli_cli));
}
static void cli_channels_shutdown(void)
{
ast_cli_unregister_multiple(cli_channels_cli, ARRAY_LEN(cli_channels_cli));
}
/*! \brief initialize the _full_cmd string in * each of the builtins. */
void ast_builtins_init(void)
{
AST_VECTOR_INIT(&shutdown_commands, 0);
ast_cli_register_multiple(cli_cli, ARRAY_LEN(cli_cli));
ast_register_cleanup(cli_shutdown);
}
void ast_cli_channels_init(void)
{
ast_cli_register_multiple(cli_channels_cli, ARRAY_LEN(cli_channels_cli));
ast_register_cleanup(cli_channels_shutdown);
}
/*!
* match a word in the CLI entry.
* returns -1 on mismatch, 0 on match of an optional word,
* 1 on match of a full word.
*
* The pattern can be
* any_word match for equal
* [foo|bar|baz] optionally, one of these words
* {foo|bar|baz} exactly, one of these words
* % any word
*/
static int word_match(const char *cmd, const char *cli_word)
{
int l;
char *pos;
if (ast_strlen_zero(cmd) || ast_strlen_zero(cli_word))
return -1;
if (!strchr(cli_rsvd, cli_word[0])) /* normal match */
return (strcasecmp(cmd, cli_word) == 0) ? 1 : -1;
l = strlen(cmd);
/* wildcard match - will extend in the future */
if (l > 0 && cli_word[0] == '%') {
return 1; /* wildcard */
}
/* Start a search for the command entered against the cli word in question */
pos = strcasestr(cli_word, cmd);
while (pos) {
/*
*Check if the word matched with is surrounded by reserved characters on both sides
* and isn't at the beginning of the cli_word since that would make it check in a location we shouldn't know about.
* If it is surrounded by reserved chars and isn't at the beginning, it's a match.
*/
if (pos != cli_word && strchr(cli_rsvd, pos[-1]) && strchr(cli_rsvd, pos[l])) {
return 1; /* valid match */
}
/* Ok, that one didn't match, strcasestr to the next appearance of the command and start over.*/
pos = strcasestr(pos + 1, cmd);
}
/* If no matches were found over the course of the while loop, we hit the end of the string. It's a mismatch. */
return -1;
}
/*! \brief if word is a valid prefix for token, returns the pos-th
* match as a malloced string, or NULL otherwise.
* Always tell in *actual how many matches we got.
*/
static char *is_prefix(const char *word, const char *token,
int pos, int *actual)
{
int lw;
char *s, *t1;
*actual = 0;
if (ast_strlen_zero(token))
return NULL;
if (ast_strlen_zero(word))
word = ""; /* dummy */
lw = strlen(word);
if (strcspn(word, cli_rsvd) != lw)
return NULL; /* no match if word has reserved chars */
if (strchr(cli_rsvd, token[0]) == NULL) { /* regular match */
if (strncasecmp(token, word, lw)) /* no match */
return NULL;
*actual = 1;
return (pos != 0) ? NULL : ast_strdup(token);
}
/* now handle regexp match */
/* Wildcard always matches, so we never do is_prefix on them */
t1 = ast_strdupa(token + 1); /* copy, skipping first char */
while (pos >= 0 && (s = strsep(&t1, cli_rsvd)) && *s) {
if (*s == '%') /* wildcard */
continue;
if (strncasecmp(s, word, lw)) /* no match */
continue;
(*actual)++;
if (pos-- == 0)
return ast_strdup(s);
}
return NULL;
}
/*!
* \internal
* \brief locate a cli command in the 'helpers' list (which must be locked).
* The search compares word by word taking care of regexps in e->cmda
* This function will return NULL when nothing is matched, or the ast_cli_entry that matched.
* \param cmds
* \param match_type has 3 possible values:
* 0 returns if the search key is equal or longer than the entry.
* note that trailing optional arguments are skipped.
* -1 true if the mismatch is on the last word XXX not true!
* 1 true only on complete, exact match.
*
*/
static struct ast_cli_entry *find_cli(const char * const cmds[], int match_type)
{
int matchlen = -1; /* length of longest match so far */
struct ast_cli_entry *cand = NULL, *e=NULL;
while ( (e = cli_next(e)) ) {
/* word-by word regexp comparison */
const char * const *src = cmds;
const char * const *dst = e->cmda;
int n = 0;
for (;; dst++, src += n) {
n = word_match(*src, *dst);
if (n < 0)
break;
}
if (ast_strlen_zero(*dst) || ((*dst)[0] == '[' && ast_strlen_zero(dst[1]))) {
/* no more words in 'e' */
if (ast_strlen_zero(*src)) /* exact match, cannot do better */
break;
/* Here, cmds has more words than the entry 'e' */
if (match_type != 0) /* but we look for almost exact match... */
continue; /* so we skip this one. */
/* otherwise we like it (case 0) */
} else { /* still words in 'e' */
if (ast_strlen_zero(*src))
continue; /* cmds is shorter than 'e', not good */
/* Here we have leftover words in cmds and 'e',
* but there is a mismatch. We only accept this one if match_type == -1
* and this is the last word for both.
*/
if (match_type != -1 || !ast_strlen_zero(src[1]) ||
!ast_strlen_zero(dst[1])) /* not the one we look for */
continue;
/* good, we are in case match_type == -1 and mismatch on last word */
}
if (src - cmds > matchlen) { /* remember the candidate */
matchlen = src - cmds;
cand = e;
}
}
return e ? e : cand;
}
static char *find_best(const char *argv[])
{
static char cmdline[80];
int x;
/* See how close we get, then print the candidate */
const char *myargv[AST_MAX_CMD_LEN] = { NULL, };
AST_RWLIST_RDLOCK(&helpers);
for (x = 0; argv[x]; x++) {
myargv[x] = argv[x];
if (!find_cli(myargv, -1))
break;
}
AST_RWLIST_UNLOCK(&helpers);
ast_join(cmdline, sizeof(cmdline), myargv);
return cmdline;
}
static int cli_is_registered(struct ast_cli_entry *e)
{
struct ast_cli_entry *cur = NULL;
while ((cur = cli_next(cur))) {
if (cur == e) {
return 1;
}
}
return 0;
}
static void remove_shutdown_command(struct ast_cli_entry *e)
{
ast_rwlock_wrlock(&shutdown_commands_lock);
AST_VECTOR_REMOVE_ELEM_UNORDERED(&shutdown_commands, e, AST_VECTOR_ELEM_CLEANUP_NOOP);
ast_rwlock_unlock(&shutdown_commands_lock);
}
int ast_cli_unregister(struct ast_cli_entry *e)
{
if (e->inuse) {
ast_log(LOG_WARNING, "Can't remove command that is in use\n");
} else {
AST_RWLIST_WRLOCK(&helpers);
AST_RWLIST_REMOVE(&helpers, e, list);
AST_RWLIST_UNLOCK(&helpers);
remove_shutdown_command(e);
ast_free(e->_full_cmd);
e->_full_cmd = NULL;
if (e->handler) {
/* this is a new-style entry. Reset fields and free memory. */
char *cmda = (char *) e->cmda;
memset(cmda, '\0', sizeof(e->cmda));
ast_free(e->command);
e->command = NULL;
e->usage = NULL;
}
}
return 0;
}
int __ast_cli_register(struct ast_cli_entry *e, struct ast_module *module)
{
struct ast_cli_entry *cur;
int i, lf, ret = -1;
struct ast_cli_args a; /* fake argument */
char **dst = (char **)e->cmda; /* need to cast as the entry is readonly */
char *s;
AST_RWLIST_WRLOCK(&helpers);
if (cli_is_registered(e)) {
ast_log(LOG_WARNING, "Command '%s' already registered (the same ast_cli_entry)\n",
S_OR(e->_full_cmd, e->command));
ret = 0; /* report success */
goto done;
}
memset(&a, '\0', sizeof(a));
e->module = module;
/* No module reference needed here, the module called us. */
e->handler(e, CLI_INIT, &a);
/* XXX check that usage and command are filled up */
s = ast_skip_blanks(e->command);
s = e->command = ast_strdup(s);
for (i=0; !ast_strlen_zero(s) && i < AST_MAX_CMD_LEN-1; i++) {
*dst++ = s; /* store string */
s = ast_skip_nonblanks(s);
if (*s == '\0') /* we are done */
break;
*s++ = '\0';
s = ast_skip_blanks(s);
}
*dst++ = NULL;
if (find_cli(e->cmda, 1)) {
ast_log(LOG_WARNING, "Command '%s' already registered (or something close enough)\n",
S_OR(e->_full_cmd, e->command));
goto done;
}
if (set_full_cmd(e)) {
ast_log(LOG_WARNING, "Error registering CLI Command '%s'\n",
S_OR(e->_full_cmd, e->command));
goto done;
}
lf = e->cmdlen;
AST_RWLIST_TRAVERSE_SAFE_BEGIN(&helpers, cur, list) {
int len = cur->cmdlen;
if (lf < len)
len = lf;
if (strncasecmp(e->_full_cmd, cur->_full_cmd, len) < 0) {
AST_RWLIST_INSERT_BEFORE_CURRENT(e, list);
break;
}
}
AST_RWLIST_TRAVERSE_SAFE_END;
if (!cur)
AST_RWLIST_INSERT_TAIL(&helpers, e, list);
ret = 0; /* success */
done:
AST_RWLIST_UNLOCK(&helpers);
if (ret) {
ast_free(e->command);
e->command = NULL;
}
return ret;
}
/*
* register/unregister an array of entries.
*/
int __ast_cli_register_multiple(struct ast_cli_entry *e, int len, struct ast_module *module)
{
int i, res = 0;
for (i = 0; i < len; i++) {
res |= __ast_cli_register(e + i, module);
}
return res;
}
int ast_cli_unregister_multiple(struct ast_cli_entry *e, int len)
{
int i, res = 0;
for (i = 0; i < len; i++)
res |= ast_cli_unregister(e + i);
return res;
}
/*! \brief helper for final part of handle_help
* if locked = 1, assume the list is already locked
*/
static char *help1(int fd, const char * const match[], int locked)
{
char matchstr[80] = "";
struct ast_cli_entry *e = NULL;
int len = 0;
int found = 0;
if (match) {
ast_join(matchstr, sizeof(matchstr), match);
len = strlen(matchstr);
}
if (!locked)
AST_RWLIST_RDLOCK(&helpers);
while ( (e = cli_next(e)) ) {
/* Hide commands that start with '_' */
if (e->_full_cmd[0] == '_')
continue;
if (match && strncasecmp(matchstr, e->_full_cmd, len))
continue;
ast_cli(fd, "%-30s -- %s\n", e->_full_cmd,
S_OR(e->summary, "<no description available>"));
found++;
}
if (!locked)
AST_RWLIST_UNLOCK(&helpers);
if (!found && matchstr[0])
ast_cli(fd, "No such command '%s'.\n", matchstr);
return CLI_SUCCESS;
}
static char *handle_help(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
char fullcmd[80];
struct ast_cli_entry *my_e;
char *res = CLI_SUCCESS;
if (cmd == CLI_INIT) {
e->command = "core show help";
e->usage =
"Usage: core show help [topic]\n"
" When called with a topic as an argument, displays usage\n"
" information on the given command. If called without a\n"
" topic, it provides a list of commands.\n";
return NULL;
} else if (cmd == CLI_GENERATE) {
/* skip first 14 or 15 chars, "core show help " */
int l = strlen(a->line);
if (l > 15) {
l = 15;
}
/* XXX watch out, should stop to the non-generator parts */
return __ast_cli_generator(a->line + l, a->word, a->n, 0);
}
if (a->argc == e->args) {
return help1(a->fd, NULL, 0);
}
AST_RWLIST_RDLOCK(&helpers);
my_e = find_cli(a->argv + 3, 1); /* try exact match first */
if (!my_e) {
res = help1(a->fd, a->argv + 3, 1 /* locked */);
AST_RWLIST_UNLOCK(&helpers);
return res;
}
if (my_e->usage)
ast_cli(a->fd, "%s", my_e->usage);
else {
ast_join(fullcmd, sizeof(fullcmd), a->argv + 3);
ast_cli(a->fd, "No help text available for '%s'.\n", fullcmd);
}
AST_RWLIST_UNLOCK(&helpers);
return res;
}
static char *parse_args(const char *s, int *argc, const char *argv[], int max, int *trailingwhitespace)
{
char *duplicate, *cur;
int x = 0;
int quoted = 0;
int escaped = 0;
int whitespace = 1;
int dummy = 0;
if (trailingwhitespace == NULL)
trailingwhitespace = &dummy;
*trailingwhitespace = 0;
if (s == NULL) /* invalid, though! */
return NULL;
/* make a copy to store the parsed string */
if (!(duplicate = ast_strdup(s)))
return NULL;
cur = duplicate;
/* Remove leading spaces from the command */
while (isspace(*s)) {
cur++;
s++;
}
/* scan the original string copying into cur when needed */
for (; *s ; s++) {
if (x >= max - 1) {
ast_log(LOG_WARNING, "Too many arguments, truncating at %s\n", s);
break;
}
if (*s == '"' && !escaped) {
quoted = !quoted;
if (quoted && whitespace) {
/* start a quoted string from previous whitespace: new argument */
argv[x++] = cur;
whitespace = 0;
}
} else if ((*s == ' ' || *s == '\t') && !(quoted || escaped)) {
/* If we are not already in whitespace, and not in a quoted string or
processing an escape sequence, and just entered whitespace, then
finalize the previous argument and remember that we are in whitespace
*/
if (!whitespace) {
*cur++ = '\0';
whitespace = 1;
}
} else if (*s == '\\' && !escaped) {
escaped = 1;
} else {
if (whitespace) {
/* we leave whitespace, and are not quoted. So it's a new argument */
argv[x++] = cur;
whitespace = 0;
}
*cur++ = *s;
escaped = 0;
}
}
/* Null terminate */
*cur++ = '\0';
/* XXX put a NULL in the last argument, because some functions that take
* the array may want a null-terminated array.
* argc still reflects the number of non-NULL entries.
*/
argv[x] = NULL;
*argc = x;
*trailingwhitespace = whitespace;
return duplicate;
}
char **ast_cli_completion_matches(const char *text, const char *word)
{
struct ast_vector_string *vec = ast_cli_completion_vector(text, word);
char **match_list;
if (!vec) {
return NULL;
}
if (AST_VECTOR_APPEND(vec, NULL)) {
/* We failed to NULL terminate the elements */
AST_VECTOR_CALLBACK_VOID(vec, ast_free);
AST_VECTOR_PTR_FREE(vec);
return NULL;
}
match_list = AST_VECTOR_STEAL_ELEMENTS(vec);
AST_VECTOR_PTR_FREE(vec);
return match_list;
}
AST_THREADSTORAGE_RAW(completion_storage);
/*!
* \internal
* \brief Add a value to the vector.
*
* \param vec Vector to add \a value to. Must be from threadstorage.
* \param value The value to add.
*
* \retval 0 Success
* \retval -1 Failure
*/
static int cli_completion_vector_add(struct ast_vector_string *vec, char *value)
{
if (!value) {
return 0;
}
if (!vec || AST_VECTOR_ADD_SORTED(vec, value, strcasecmp)) {
if (vec) {
ast_threadstorage_set_ptr(&completion_storage, NULL);
AST_VECTOR_CALLBACK_VOID(vec, ast_free);
AST_VECTOR_FREE(vec);
}
ast_free(value);
return -1;
}
return 0;
}
int ast_cli_completion_add(char *value)
{
return cli_completion_vector_add(ast_threadstorage_get_ptr(&completion_storage), value);
}
struct ast_vector_string *ast_cli_completion_vector(const char *text, const char *word)
{
char *retstr, *prevstr;
size_t max_equal;
size_t which = 0;
struct ast_vector_string *vec = ast_calloc(1, sizeof(*vec));
/* Recursion into this function is a coding error. */
ast_assert(!ast_threadstorage_get_ptr(&completion_storage));
if (!vec) {
return NULL;
}
if (ast_threadstorage_set_ptr(&completion_storage, vec)) {
ast_log(LOG_ERROR, "Failed to initialize threadstorage for completion.\n");
ast_free(vec);
return NULL;
}
while ((retstr = ast_cli_generator(text, word, which)) != NULL) {
if (cli_completion_vector_add(vec, retstr)) {
ast_threadstorage_set_ptr(&completion_storage, NULL);
goto vector_cleanup;
}
++which;
}
ast_threadstorage_set_ptr(&completion_storage, NULL);
if (!AST_VECTOR_SIZE(vec)) {
AST_VECTOR_PTR_FREE(vec);
return NULL;
}
prevstr = AST_VECTOR_GET(vec, 0);
max_equal = strlen(prevstr);
which = 1;
/* Find the longest substring that is common to all results
* (it is a candidate for completion), and store a copy in entry 0.
*/
while (which < AST_VECTOR_SIZE(vec)) {
size_t i = 0;
retstr = AST_VECTOR_GET(vec, which);
/* Check for and remove duplicate strings. */
if (!strcasecmp(prevstr, retstr)) {
AST_VECTOR_REMOVE(vec, which, 1);
ast_free(retstr);
continue;
}
while (i < max_equal && toupper(prevstr[i]) == toupper(retstr[i])) {
i++;
}
max_equal = i;
prevstr = retstr;
++which;
}
/* Insert longest match to position 0. */
retstr = ast_strndup(AST_VECTOR_GET(vec, 0), max_equal);
if (!retstr || AST_VECTOR_INSERT_AT(vec, 0, retstr)) {
ast_free(retstr);
goto vector_cleanup;
}
return vec;
vector_cleanup:
AST_VECTOR_CALLBACK_VOID(vec, ast_free);
AST_VECTOR_PTR_FREE(vec);
return NULL;
}
/*! \brief returns true if there are more words to match */
static int more_words (const char * const *dst)
{
int i;
for (i = 0; dst[i]; i++) {
if (dst[i][0] != '[')
return -1;
}
return 0;
}
/*
* generate the entry at position 'state'
*/
static char *__ast_cli_generator(const char *text, const char *word, int state, int lock)
{
const char *argv[AST_MAX_ARGS];
struct ast_cli_entry *e = NULL;
int x = 0, argindex, matchlen;
int matchnum=0;
char *ret = NULL;
char matchstr[80] = "";
int tws = 0;
/* Split the argument into an array of words */
char *duplicate = parse_args(text, &x, argv, ARRAY_LEN(argv), &tws);
if (!duplicate) /* malloc error */
return NULL;
/* Compute the index of the last argument (could be an empty string) */
argindex = (!ast_strlen_zero(word) && x>0) ? x-1 : x;
/* rebuild the command, ignore terminating white space and flatten space */
ast_join(matchstr, sizeof(matchstr)-1, argv);
matchlen = strlen(matchstr);
if (tws) {
strcat(matchstr, " "); /* XXX */
if (matchlen)
matchlen++;
}
if (lock)
AST_RWLIST_RDLOCK(&helpers);
while ( (e = cli_next(e)) ) {
/* XXX repeated code */
int src = 0, dst = 0, n = 0;
if (e->command[0] == '_')
continue;
/*
* Try to match words, up to and excluding the last word, which
* is either a blank or something that we want to extend.
*/
for (;src < argindex; dst++, src += n) {
n = word_match(argv[src], e->cmda[dst]);
if (n < 0)
break;
}
if (src != argindex && more_words(e->cmda + dst)) /* not a match */
continue;
ret = is_prefix(argv[src], e->cmda[dst], state - matchnum, &n);
matchnum += n; /* this many matches here */
if (ret) {
/*
* argv[src] is a valid prefix of the next word in this
* command. If this is also the correct entry, return it.
*/
if (matchnum > state)
break;
ast_free(ret);
ret = NULL;
} else if (ast_strlen_zero(e->cmda[dst])) {
/*
* This entry is a prefix of the command string entered
* (only one entry in the list should have this property).
* Run the generator if one is available. In any case we are done.
*/
if (e->handler) { /* new style command */
struct ast_cli_args a = {
.line = matchstr, .word = word,
.pos = argindex,
.n = state - matchnum,
.argv = argv,
.argc = x};
/* If the command is in a module it must be running. */
if (!e->module || ast_module_running_ref(e->module)) {
ret = e->handler(e, CLI_GENERATE, &a);
ast_module_unref(e->module);
}
}
if (ret)
break;
}
}
if (lock)
AST_RWLIST_UNLOCK(&helpers);
ast_free(duplicate);
return ret;
}
char *ast_cli_generator(const char *text, const char *word, int state)
{
return __ast_cli_generator(text, word, state, 1);
}
static int allowed_on_shutdown(struct ast_cli_entry *e)
{
int found = 0;
int i;
ast_rwlock_rdlock(&shutdown_commands_lock);
for (i = 0; i < AST_VECTOR_SIZE(&shutdown_commands); ++i) {
if (e == AST_VECTOR_GET(&shutdown_commands, i)) {
found = 1;
break;
}
}
ast_rwlock_unlock(&shutdown_commands_lock);
return found;
}
int ast_cli_command_full(int uid, int gid, int fd, const char *s)
{
const char *args[AST_MAX_ARGS + 1];
struct ast_cli_entry *e = NULL;
int x;
char *duplicate = parse_args(s, &x, args + 1, AST_MAX_ARGS, NULL);
char tmp[AST_MAX_ARGS + 1];
char *retval = CLI_FAILURE;
struct ast_cli_args a = {
.fd = fd, .argc = x, .argv = args+1 };
if (duplicate == NULL)
return RESULT_FAILURE;
if (x < 1) /* We need at least one entry, otherwise ignore */
goto done;
AST_RWLIST_RDLOCK(&helpers);
e = find_cli(args + 1, 0);
if (e)
ast_atomic_fetchadd_int(&e->inuse, 1);
AST_RWLIST_UNLOCK(&helpers);
if (e == NULL) {
ast_cli(fd, "No such command '%s' (type 'core show help %s' for other possible commands)\n", s, find_best(args + 1));
goto done;
}
if (ast_shutting_down() && !allowed_on_shutdown(e)) {
ast_cli(fd, "Command '%s' cannot be run during shutdown\n", s);
goto done;
}
ast_join(tmp, sizeof(tmp), args + 1);
/* Check if the user has rights to run this command. */
if (!cli_has_permissions(uid, gid, tmp)) {
ast_cli(fd, "You don't have permissions to run '%s' command\n", tmp);
goto done;
}
/*
* Within the handler, argv[-1] contains a pointer to the ast_cli_entry.
* Remember that the array returned by parse_args is NULL-terminated.
*/
args[0] = (char *)e;
/* If the command is in a module it must be running. */
if (!e->module || ast_module_running_ref(e->module)) {
retval = e->handler(e, CLI_HANDLER, &a);
ast_module_unref(e->module);
}
if (retval == CLI_SHOWUSAGE) {
ast_cli(fd, "%s", S_OR(e->usage, "Invalid usage, but no usage information available.\n"));
} else if (retval == CLI_FAILURE) {
ast_cli(fd, "Command '%s' failed.\n", s);
}
done:
if (e) {
ast_atomic_fetchadd_int(&e->inuse, -1);
}
ast_free(duplicate);
return retval == CLI_SUCCESS ? RESULT_SUCCESS : RESULT_FAILURE;
}
int ast_cli_command_multiple_full(int uid, int gid, int fd, size_t size, const char *s)
{
char cmd[512];
int x, y = 0, count = 0;
for (x = 0; x < size; x++) {
cmd[y] = s[x];
y++;
if (s[x] == '\0') {
ast_cli_command_full(uid, gid, fd, cmd);
y = 0;
count++;
}
}
return count;
}
void ast_cli_print_timestr_fromseconds(int fd, int seconds, const char *prefix)
{
print_uptimestr(fd, ast_tv(seconds, 0), prefix, 0);
}
int ast_cli_allow_at_shutdown(struct ast_cli_entry *e)
{
int res;
ast_rwlock_wrlock(&shutdown_commands_lock);
res = AST_VECTOR_APPEND(&shutdown_commands, e);
ast_rwlock_unlock(&shutdown_commands_lock);
return res;
}