![rizzo](/assets/img/avatar_default.png)
As partly documented in loader.c and include/asterisk/module.h, modules are now expected to return all of their methods and flags into a structure 'mod_data', and are normally loaded with RTLD_NOW | RTLD_LOCAL, so symbols are resolved immediately and conflicts should be less likely. Only in a small number of cases (res_*, typically) modules are loaded RTLD_GLOBAL, so they can export symbols. The core of the change is only the two files loader.c and include/asterisk/module.h, all the rest is simply adaptation of the existing modules to the new API, a rather mechanical (but believe me, time and finger-consuming!) process whose detail you can figure out by svn diff'ing any single module. Expect some minor compilation issue after this change, please report it on mantis http://bugs.digium.com/view.php?id=6968 so we collect all the feedback in one place. I am just sorry that this change missed SVN version number 20000! git-svn-id: http://svn.digium.com/svn/asterisk/trunk@20003 f38db490-d61c-443f-a65b-d21fe96a405b
404 lines
12 KiB
C
404 lines
12 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 1999 - 2005, Digium, Inc.
|
|
*
|
|
*
|
|
* Made only slightly more sane by 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 DISA -- Direct Inward System Access Application
|
|
*
|
|
* \author Jim Dixon <jim@lambdatel.com>
|
|
*
|
|
* \ingroup applications
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
#include <sys/time.h>
|
|
|
|
#include "asterisk.h"
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
#include "asterisk/lock.h"
|
|
#include "asterisk/file.h"
|
|
#include "asterisk/logger.h"
|
|
#include "asterisk/channel.h"
|
|
#include "asterisk/app.h"
|
|
#include "asterisk/indications.h"
|
|
#include "asterisk/pbx.h"
|
|
#include "asterisk/module.h"
|
|
#include "asterisk/translate.h"
|
|
#include "asterisk/ulaw.h"
|
|
#include "asterisk/callerid.h"
|
|
#include "asterisk/stringfields.h"
|
|
|
|
static char *app = "DISA";
|
|
|
|
static char *synopsis = "DISA (Direct Inward System Access)";
|
|
|
|
static char *descrip =
|
|
"DISA(<numeric passcode>[|<context>]) or disa(<filename>)\n"
|
|
"The DISA, Direct Inward System Access, application allows someone from \n"
|
|
"outside the telephone switch (PBX) to obtain an \"internal\" system \n"
|
|
"dialtone and to place calls from it as if they were placing a call from \n"
|
|
"within the switch.\n"
|
|
"DISA plays a dialtone. The user enters their numeric passcode, followed by\n"
|
|
"the pound sign (#). If the passcode is correct, the user is then given\n"
|
|
"system dialtone on which a call may be placed. Obviously, this type\n"
|
|
"of access has SERIOUS security implications, and GREAT care must be\n"
|
|
"taken NOT to compromise your security.\n\n"
|
|
"There is a possibility of accessing DISA without password. Simply\n"
|
|
"exchange your password with \"no-password\".\n\n"
|
|
" Example: exten => s,1,DISA(no-password|local)\n\n"
|
|
"Be aware that using this compromises the security of your PBX.\n\n"
|
|
"The arguments to this application (in extensions.conf) allow either\n"
|
|
"specification of a single global passcode (that everyone uses), or\n"
|
|
"individual passcodes contained in a file. It also allow specification\n"
|
|
"of the context on which the user will be dialing. If no context is\n"
|
|
"specified, the DISA application defaults the context to \"disa\".\n"
|
|
"Presumably a normal system will have a special context set up\n"
|
|
"for DISA use with some or a lot of restrictions. \n\n"
|
|
"The file that contains the passcodes (if used) allows specification\n"
|
|
"of either just a passcode (defaulting to the \"disa\" context, or\n"
|
|
"passcode|context on each line of the file. The file may contain blank\n"
|
|
"lines, or comments starting with \"#\" or \";\". In addition, the\n"
|
|
"above arguments may have |new-callerid-string appended to them, to\n"
|
|
"specify a new (different) callerid to be used for this call, for\n"
|
|
"example: numeric-passcode|context|\"My Phone\" <(234) 123-4567> or \n"
|
|
"full-pathname-of-passcode-file|\"My Phone\" <(234) 123-4567>. Last\n"
|
|
"but not least, |mailbox[@context] may be appended, which will cause\n"
|
|
"a stutter-dialtone (indication \"dialrecall\") to be used, if the\n"
|
|
"specified mailbox contains any new messages, for example:\n"
|
|
"numeric-passcode|context||1234 (w/a changing callerid). Note that\n"
|
|
"in the case of specifying the numeric-passcode, the context must be\n"
|
|
"specified if the callerid is specified also.\n\n"
|
|
"If login is successful, the application looks up the dialed number in\n"
|
|
"the specified (or default) context, and executes it if found.\n"
|
|
"If the user enters an invalid extension and extension \"i\" (invalid) \n"
|
|
"exists in the context, it will be used. Also, if you set the 5th argument\n"
|
|
"to 'NOANSWER', the DISA application will not answer initially.\n";
|
|
|
|
LOCAL_USER_DECL;
|
|
|
|
static void play_dialtone(struct ast_channel *chan, char *mailbox)
|
|
{
|
|
const struct tone_zone_sound *ts = NULL;
|
|
if(ast_app_has_voicemail(mailbox, NULL))
|
|
ts = ast_get_indication_tone(chan->zone, "dialrecall");
|
|
else
|
|
ts = ast_get_indication_tone(chan->zone, "dial");
|
|
if (ts)
|
|
ast_playtones_start(chan, 0, ts->data, 0);
|
|
else
|
|
ast_tonepair_start(chan, 350, 440, 0, 0);
|
|
}
|
|
|
|
static int disa_exec(struct ast_channel *chan, void *data)
|
|
{
|
|
int i,j,k,x,did_ignore,special_noanswer;
|
|
int firstdigittimeout = 20000;
|
|
int digittimeout = 10000;
|
|
struct localuser *u;
|
|
char *tmp, exten[AST_MAX_EXTENSION],acctcode[20]="";
|
|
char pwline[256];
|
|
char ourcidname[256],ourcidnum[256];
|
|
struct ast_frame *f;
|
|
struct timeval lastdigittime;
|
|
int res;
|
|
time_t rstart;
|
|
FILE *fp;
|
|
AST_DECLARE_APP_ARGS(args,
|
|
AST_APP_ARG(passcode);
|
|
AST_APP_ARG(context);
|
|
AST_APP_ARG(cid);
|
|
AST_APP_ARG(mailbox);
|
|
AST_APP_ARG(noanswer);
|
|
);
|
|
|
|
if (ast_strlen_zero(data)) {
|
|
ast_log(LOG_WARNING, "disa requires an argument (passcode/passcode file)\n");
|
|
return -1;
|
|
}
|
|
|
|
LOCAL_USER_ADD(u);
|
|
|
|
if (chan->pbx) {
|
|
firstdigittimeout = chan->pbx->rtimeout*1000;
|
|
digittimeout = chan->pbx->dtimeout*1000;
|
|
}
|
|
|
|
if (ast_set_write_format(chan,AST_FORMAT_ULAW)) {
|
|
ast_log(LOG_WARNING, "Unable to set write format to Mu-law on %s\n", chan->name);
|
|
LOCAL_USER_REMOVE(u);
|
|
return -1;
|
|
}
|
|
if (ast_set_read_format(chan,AST_FORMAT_ULAW)) {
|
|
ast_log(LOG_WARNING, "Unable to set read format to Mu-law on %s\n", chan->name);
|
|
LOCAL_USER_REMOVE(u);
|
|
return -1;
|
|
}
|
|
|
|
ast_log(LOG_DEBUG, "Digittimeout: %d\n", digittimeout);
|
|
ast_log(LOG_DEBUG, "Responsetimeout: %d\n", firstdigittimeout);
|
|
|
|
if (!(tmp = ast_strdupa(data))) {
|
|
LOCAL_USER_REMOVE(u);
|
|
return -1;
|
|
}
|
|
|
|
AST_STANDARD_APP_ARGS(args, tmp);
|
|
|
|
if (ast_strlen_zero(args.context))
|
|
args.context = "disa";
|
|
if (ast_strlen_zero(args.mailbox))
|
|
args.mailbox = "";
|
|
|
|
ast_log(LOG_DEBUG, "Mailbox: %s\n",args.mailbox);
|
|
|
|
|
|
special_noanswer = 0;
|
|
if ((!args.noanswer) || strcmp(args.noanswer,"NOANSWER"))
|
|
{
|
|
if (chan->_state != AST_STATE_UP) {
|
|
/* answer */
|
|
ast_answer(chan);
|
|
}
|
|
} else special_noanswer = 1;
|
|
i = k = x = 0; /* k is 0 for pswd entry, 1 for ext entry */
|
|
did_ignore = 0;
|
|
exten[0] = 0;
|
|
acctcode[0] = 0;
|
|
/* can we access DISA without password? */
|
|
|
|
ast_log(LOG_DEBUG, "Context: %s\n",args.context);
|
|
|
|
if (!strcasecmp(args.passcode, "no-password")) {
|
|
k |= 1; /* We have the password */
|
|
ast_log(LOG_DEBUG, "DISA no-password login success\n");
|
|
}
|
|
lastdigittime = ast_tvnow();
|
|
|
|
play_dialtone(chan, args.mailbox);
|
|
|
|
for (;;) {
|
|
/* if outa time, give em reorder */
|
|
if (ast_tvdiff_ms(ast_tvnow(), lastdigittime) >
|
|
((k&2) ? digittimeout : firstdigittimeout)) {
|
|
ast_log(LOG_DEBUG,"DISA %s entry timeout on chan %s\n",
|
|
((k&1) ? "extension" : "password"),chan->name);
|
|
break;
|
|
}
|
|
if ((res = ast_waitfor(chan, -1) < 0)) {
|
|
ast_log(LOG_DEBUG, "Waitfor returned %d\n", res);
|
|
continue;
|
|
}
|
|
|
|
f = ast_read(chan);
|
|
if (f == NULL) {
|
|
LOCAL_USER_REMOVE(u);
|
|
return -1;
|
|
}
|
|
if ((f->frametype == AST_FRAME_CONTROL) &&
|
|
(f->subclass == AST_CONTROL_HANGUP)) {
|
|
ast_frfree(f);
|
|
LOCAL_USER_REMOVE(u);
|
|
return -1;
|
|
}
|
|
if (f->frametype == AST_FRAME_VOICE) {
|
|
ast_frfree(f);
|
|
continue;
|
|
}
|
|
|
|
/* if not DTMF, just do it again */
|
|
if (f->frametype != AST_FRAME_DTMF) {
|
|
ast_frfree(f);
|
|
continue;
|
|
}
|
|
|
|
j = f->subclass; /* save digit */
|
|
ast_frfree(f);
|
|
if (i == 0) {
|
|
k|=2; /* We have the first digit */
|
|
ast_playtones_stop(chan);
|
|
}
|
|
lastdigittime = ast_tvnow();
|
|
/* got a DTMF tone */
|
|
if (i < AST_MAX_EXTENSION) { /* if still valid number of digits */
|
|
if (!(k&1)) { /* if in password state */
|
|
if (j == '#') { /* end of password */
|
|
/* see if this is an integer */
|
|
if (sscanf(args.passcode,"%d",&j) < 1) { /* nope, it must be a filename */
|
|
fp = fopen(args.passcode,"r");
|
|
if (!fp) {
|
|
ast_log(LOG_WARNING,"DISA password file %s not found on chan %s\n",args.passcode,chan->name);
|
|
LOCAL_USER_REMOVE(u);
|
|
return -1;
|
|
}
|
|
pwline[0] = 0;
|
|
while(fgets(pwline,sizeof(pwline) - 1,fp)) {
|
|
if (!pwline[0])
|
|
continue;
|
|
if (pwline[strlen(pwline) - 1] == '\n')
|
|
pwline[strlen(pwline) - 1] = 0;
|
|
if (!pwline[0])
|
|
continue;
|
|
/* skip comments */
|
|
if (pwline[0] == '#')
|
|
continue;
|
|
if (pwline[0] == ';')
|
|
continue;
|
|
|
|
AST_STANDARD_APP_ARGS(args, pwline);
|
|
|
|
ast_log(LOG_DEBUG, "Mailbox: %s\n",args.mailbox);
|
|
|
|
/* password must be in valid format (numeric) */
|
|
if (sscanf(args.passcode,"%d", &j) < 1)
|
|
continue;
|
|
/* if we got it */
|
|
if (!strcmp(exten,args.passcode)) {
|
|
if (ast_strlen_zero(args.context))
|
|
args.context = "disa";
|
|
if (ast_strlen_zero(args.mailbox))
|
|
args.mailbox = "";
|
|
break;
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|
|
/* compare the two */
|
|
if (strcmp(exten,args.passcode)) {
|
|
ast_log(LOG_WARNING,"DISA on chan %s got bad password %s\n",chan->name,exten);
|
|
goto reorder;
|
|
|
|
}
|
|
/* password good, set to dial state */
|
|
ast_log(LOG_DEBUG,"DISA on chan %s password is good\n",chan->name);
|
|
play_dialtone(chan, args.mailbox);
|
|
|
|
k|=1; /* In number mode */
|
|
i = 0; /* re-set buffer pointer */
|
|
exten[sizeof(acctcode)] = 0;
|
|
ast_copy_string(acctcode, exten, sizeof(acctcode));
|
|
exten[0] = 0;
|
|
ast_log(LOG_DEBUG,"Successful DISA log-in on chan %s\n", chan->name);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
exten[i++] = j; /* save digit */
|
|
exten[i] = 0;
|
|
if (!(k&1))
|
|
continue; /* if getting password, continue doing it */
|
|
/* if this exists */
|
|
|
|
if (ast_ignore_pattern(args.context, exten)) {
|
|
play_dialtone(chan, "");
|
|
did_ignore = 1;
|
|
} else
|
|
if (did_ignore) {
|
|
ast_playtones_stop(chan);
|
|
did_ignore = 0;
|
|
}
|
|
|
|
/* if can do some more, do it */
|
|
if (!ast_matchmore_extension(chan,args.context,exten,1, chan->cid.cid_num)) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (k == 3) {
|
|
int recheck = 0;
|
|
struct ast_flags flags = { AST_CDR_FLAG_POSTED };
|
|
|
|
if (!ast_exists_extension(chan, args.context, exten, 1, chan->cid.cid_num)) {
|
|
pbx_builtin_setvar_helper(chan, "INVALID_EXTEN", exten);
|
|
exten[0] = 'i';
|
|
exten[1] = '\0';
|
|
recheck = 1;
|
|
}
|
|
if (!recheck || ast_exists_extension(chan, args.context, exten, 1, chan->cid.cid_num)) {
|
|
ast_playtones_stop(chan);
|
|
/* We're authenticated and have a target extension */
|
|
if (!ast_strlen_zero(args.cid)) {
|
|
ast_callerid_split(args.cid, ourcidname, sizeof(ourcidname), ourcidnum, sizeof(ourcidnum));
|
|
ast_set_callerid(chan, ourcidnum, ourcidname, ourcidnum);
|
|
}
|
|
|
|
if (!ast_strlen_zero(acctcode))
|
|
ast_string_field_set(chan, accountcode, acctcode);
|
|
|
|
if (special_noanswer) flags.flags = 0;
|
|
ast_cdr_reset(chan->cdr, &flags);
|
|
ast_explicit_goto(chan, args.context, exten, 1);
|
|
LOCAL_USER_REMOVE(u);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Received invalid, but no "i" extension exists in the given context */
|
|
|
|
reorder:
|
|
|
|
ast_indicate(chan,AST_CONTROL_CONGESTION);
|
|
/* something is invalid, give em reorder for several seconds */
|
|
time(&rstart);
|
|
while(time(NULL) < rstart + 10) {
|
|
if (ast_waitfor(chan, -1) < 0)
|
|
break;
|
|
f = ast_read(chan);
|
|
if (!f)
|
|
break;
|
|
ast_frfree(f);
|
|
}
|
|
ast_playtones_stop(chan);
|
|
LOCAL_USER_REMOVE(u);
|
|
return -1;
|
|
}
|
|
|
|
static int unload_module(void *mod)
|
|
{
|
|
int res;
|
|
|
|
res = ast_unregister_application(app);
|
|
|
|
STANDARD_HANGUP_LOCALUSERS;
|
|
|
|
return res;
|
|
}
|
|
|
|
static int load_module(void *mod)
|
|
{
|
|
return ast_register_application(app, disa_exec, synopsis, descrip);
|
|
}
|
|
|
|
static const char *description(void)
|
|
{
|
|
return "DISA (Direct Inward System Access) Application";
|
|
}
|
|
|
|
static const char *key(void)
|
|
{
|
|
return ASTERISK_GPL_KEY;
|
|
}
|
|
|
|
STD_MOD1;
|