app_authenticate.c File Reference

Execute arbitrary authenticate commands. More...

#include "asterisk.h"
#include "asterisk/lock.h"
#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/app.h"
#include "asterisk/astdb.h"
#include "asterisk/utils.h"

Include dependency graph for app_authenticate.c:

Go to the source code of this file.

Enumerations
enum	{ OPT_ACCOUNT = (1 << 0) , OPT_DATABASE = (1 << 1) , OPT_MULTIPLE = (1 << 3) , OPT_REMOVE = (1 << 4) }

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static int	auth_exec (struct ast_channel *chan, const char *data)
static int	load_module (void)
static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Authentication Application" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, .support_level = AST_MODULE_SUPPORT_CORE, }
static const char	app [] = "Authenticate"
static const struct ast_module_info *	ast_module_info = &__mod_info
static const struct ast_app_option	auth_app_options [128] = { [ 'a' ] = { .flag = OPT_ACCOUNT }, [ 'd' ] = { .flag = OPT_DATABASE }, [ 'm' ] = { .flag = OPT_MULTIPLE }, [ 'r' ] = { .flag = OPT_REMOVE }, }

Detailed Description

Execute arbitrary authenticate commands.

Author

Mark Spencer marks.nosp@m.ter@.nosp@m.digiu.nosp@m.m.co.nosp@m.m

Definition in file app_authenticate.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
OPT_ACCOUNT
OPT_DATABASE
OPT_MULTIPLE
OPT_REMOVE

Definition at line 43 of file app_authenticate.c.

     {
    OPT_ACCOUNT = (1 << 0),
    OPT_DATABASE = (1 << 1),
    OPT_MULTIPLE = (1 << 3),
    OPT_REMOVE = (1 << 4),
};

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 286 of file app_authenticate.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 286 of file app_authenticate.c.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 286 of file app_authenticate.c.

auth_exec()

static int auth_exec ( struct ast_channel *  chan, const char *  data  )

static

Definition at line 125 of file app_authenticate.c.

{
    int res = 0, retries, maxdigits;
    char passwd[256], *prompt = "agent-pass", *argcopy = NULL;
    struct ast_flags flags = {0};
 
    AST_DECLARE_APP_ARGS(arglist,
        AST_APP_ARG(password);
        AST_APP_ARG(options);
        AST_APP_ARG(maxdigits);
        AST_APP_ARG(prompt);
    );
 
    if (ast_strlen_zero(data)) {
        ast_log(LOG_WARNING, "Authenticate requires an argument(password)\n");
        return -1;
    }
 
    if (ast_channel_state(chan) != AST_STATE_UP) {
        if ((res = ast_answer(chan)))
            return -1;
    }
 
    argcopy = ast_strdupa(data);
 
    AST_STANDARD_APP_ARGS(arglist, argcopy);
 
    if (!ast_strlen_zero(arglist.options))
        ast_app_parse_options(auth_app_options, &flags, NULL, arglist.options);
 
    if (!ast_strlen_zero(arglist.maxdigits)) {
        maxdigits = atoi(arglist.maxdigits);
        if ((maxdigits<1) || (maxdigits>sizeof(passwd)-2))
            maxdigits = sizeof(passwd) - 2;
    } else {
        maxdigits = sizeof(passwd) - 2;
    }
 
    if (!ast_strlen_zero(arglist.prompt)) {
        prompt = arglist.prompt;
    } else {
        prompt = "agent-pass";
    }
 
    /* Start asking for password */
    for (retries = 0; retries < 3; retries++) {
        if ((res = ast_app_getdata(chan, prompt, passwd, maxdigits, 0)) < 0)
            break;
 
        res = 0;
 
        if (arglist.password[0] != '/') {
            /* Compare against a fixed password */
            if (!strcmp(passwd, arglist.password))
                break;
        } else if (ast_test_flag(&flags,OPT_DATABASE)) {
            char tmp[256];
            /* Compare against a database key */
            if (!ast_db_get(arglist.password + 1, passwd, tmp, sizeof(tmp))) {
                /* It's a good password */
                if (ast_test_flag(&flags,OPT_REMOVE))
                    ast_db_del(arglist.password + 1, passwd);
                break;
            }
        } else {
            /* Compare against a file */
            FILE *f;
            char buf[256] = "", md5passwd[33] = "", *md5secret = NULL;
 
            if (!(f = fopen(arglist.password, "r"))) {
                ast_log(LOG_WARNING, "Unable to open file '%s' for authentication: %s\n", arglist.password, strerror(errno));
                continue;
            }
 
            for (;;) {
                size_t len;
 
                if (feof(f))
                    break;
 
                if (!fgets(buf, sizeof(buf), f)) {
                    continue;
                }
 
                if (ast_strlen_zero(buf))
                    continue;
 
                len = strlen(buf) - 1;
                if (buf[len] == '\n')
                    buf[len] = '\0';
 
                if (ast_test_flag(&flags, OPT_MULTIPLE)) {
                    md5secret = buf;
                    strsep(&md5secret, ":");
                    if (!md5secret)
                        continue;
                    ast_md5_hash(md5passwd, passwd);
                    if (!strcmp(md5passwd, md5secret)) {
                        if (ast_test_flag(&flags, OPT_ACCOUNT)) {
                            ast_channel_lock(chan);
                            ast_channel_accountcode_set(chan, buf);
                            ast_channel_unlock(chan);
                        }
                        break;
                    }
                } else {
                    if (!strcmp(passwd, buf)) {
                        if (ast_test_flag(&flags, OPT_ACCOUNT)) {
                            ast_channel_lock(chan);
                            ast_channel_accountcode_set(chan, buf);
                            ast_channel_unlock(chan);
                        }
                        break;
                    }
                }
            }
 
            fclose(f);
 
            if (!ast_strlen_zero(buf)) {
                if (ast_test_flag(&flags, OPT_MULTIPLE)) {
                    if (md5secret && !strcmp(md5passwd, md5secret))
                        break;
                } else {
                    if (!strcmp(passwd, buf))
                        break;
                }
            }
        }
        prompt = "auth-incorrect";
    }
 
    if ((retries < 3) && !res) {
        if (ast_test_flag(&flags,OPT_ACCOUNT) && !ast_test_flag(&flags,OPT_MULTIPLE)) {
            ast_channel_lock(chan);
            ast_channel_accountcode_set(chan, passwd);
            ast_channel_unlock(chan);
        }
        if (!(res = ast_streamfile(chan, "auth-thankyou", ast_channel_language(chan))))
            res = ast_waitstream(chan, "");
    } else {
        if (!ast_streamfile(chan, "vm-goodbye", ast_channel_language(chan)))
            res = ast_waitstream(chan, "");
        res = -1;
    }
 
    return res;
}

References ast_answer(), AST_APP_ARG, ast_app_getdata(), ast_app_parse_options(), ast_channel_language(), ast_channel_lock, ast_channel_unlock, ast_db_del(), ast_db_get(), AST_DECLARE_APP_ARGS, ast_log, ast_md5_hash(), AST_STANDARD_APP_ARGS, AST_STATE_UP, ast_strdupa, ast_streamfile(), ast_strlen_zero(), ast_test_flag, ast_waitstream(), auth_app_options, buf, errno, ast_flags::flags, len(), LOG_WARNING, NULL, OPT_ACCOUNT, OPT_DATABASE, OPT_MULTIPLE, OPT_REMOVE, options, prompt, strsep(), and tmp().

Referenced by load_module().

load_module()

static int load_module ( void  )

static

Definition at line 279 of file app_authenticate.c.

{
    if (ast_register_application_xml(app, auth_exec))
        return AST_MODULE_LOAD_DECLINE;
    return AST_MODULE_LOAD_SUCCESS;
}

References app, AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, ast_register_application_xml, and auth_exec().

unload_module()

static int unload_module ( void  )

static

Definition at line 274 of file app_authenticate.c.

{
    return ast_unregister_application(app);
}

References app, and ast_unregister_application().

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Authentication Application" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, .support_level = AST_MODULE_SUPPORT_CORE, }

static

Definition at line 286 of file app_authenticate.c.

app

const char app[] = "Authenticate"

static

Definition at line 58 of file app_authenticate.c.

Referenced by load_module(), and unload_module().

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 286 of file app_authenticate.c.

auth_app_options

const struct ast_app_option auth_app_options[128] = { [ 'a' ] = { .flag = OPT_ACCOUNT }, [ 'd' ] = { .flag = OPT_DATABASE }, [ 'm' ] = { .flag = OPT_MULTIPLE }, [ 'r' ] = { .flag = OPT_REMOVE }, }

static

Definition at line 55 of file app_authenticate.c.

Referenced by auth_exec().