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/*
map.c
This file is part of GNU Anubis.
Copyright (C) 2001-2014 The Anubis Team.
GNU Anubis is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
GNU Anubis is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with GNU Anubis. If not, see <http://www.gnu.org/licenses/>.
*/
#include "headers.h"
#include "extern.h"
#include "rcfile.h"
/***************************
The translation map parser
****************************/
char *
parse_line_option (char *ptr)
{
while (isspace (*(u_char *) ptr))
ptr++;
remcrlf (ptr);
return ptr;
}
struct translate_env
{
int stop;
int cs;
char *extuser;
char *extaddr;
char translate[65];
char into[65];
};
void
parse_transmap (int *cs, char *extuser, char *extaddr, char **dst)
{
struct translate_env env;
env.stop = 0;
env.cs = -1; /* failed by default: unmatched */
env.extuser = extuser;
env.extaddr = extaddr;
rcfile_process_section (CF_SUPERVISOR, "TRANSLATION", &env, NULL);
*cs = env.cs;
if (*cs == 1)
{ /* success */
if (check_username (env.into))
{
info (NORMAL, _("%s remapped to %s@localhost."),
env.translate, env.into);
assign_string (dst, env.into);
}
else
*cs = 0; /* failed: invalid user name */
}
}
/* ******************** Configuration file settings ********************** */
#define KW_TRANSLATE 1
struct rc_kwdef translate_kw[] = {
{"translate", KW_TRANSLATE},
{NULL}
};
void
translate_parser (EVAL_ENV env, int key, ANUBIS_LIST arglist, void *inv_data)
{
struct translate_env *xlat_env = eval_env_data (env);
char *p = 0;
int cu = 0; /* check a user name */
char a1[65];
char a2[65];
char user[65];
char address[65];
unsigned long inaddr;
struct sockaddr_in addr;
size_t argc;
if (!xlat_env || xlat_env->stop)
return;
switch (key)
{
case KW_TRANSLATE:
/* translate [=] [USER@]ADDRESS into [=] USERNAME
argv[0] = [USER@]ADDRESS
argv[1] = "into"
argv[2] = USERNAME */
safe_strcpy (a1, xlat_env->extaddr);
memset (&addr, 0, sizeof (addr));
argc = list_count (arglist);
if (argc < 3 || argc > 4 || strcmp (list_item (arglist, 1), "into"))
{
/* FIXME: Merge the two functions? */
eval_error (0, env, _("invalid syntax"));
info (VERBOSE, _("Translation map: incorrect syntax."));
break;
}
safe_strcpy (xlat_env->translate, list_item (arglist, 0));
p = list_item (arglist, 2);
if (p[0] == '=')
p = list_item (arglist, 3);
safe_strcpy (xlat_env->into, p);
if (strchr (xlat_env->translate, '@'))
{
if (xlat_env->extuser == 0)
break; /* failed */
safe_strcpy (user, xlat_env->translate);
p = strchr (user, '@');
*p++ = '\0';
safe_strcpy (address, p);
cu = 1;
}
else
safe_strcpy (address, xlat_env->translate);
inaddr = inet_addr (address);
if (inaddr != INADDR_NONE)
memcpy (&addr.sin_addr, &inaddr, sizeof (inaddr));
else
{
struct hostent *hp = 0;
hp = gethostbyname (address);
if (hp == 0)
{
cu = 0;
hostname_error (address);
break; /* failed */
}
else
{
if (hp->h_length != 4 && hp->h_length != 8)
{
eval_error (0, env,
_("Illegal address length received for host %s"),
address);
cu = 0;
break; /* failed */
}
else
{
memcpy (&addr.sin_addr.s_addr, hp->h_addr, hp->h_length);
}
}
}
safe_strcpy (a2, inet_ntoa (addr.sin_addr));
if (cu)
{
if (strcmp (xlat_env->extuser, user) == 0)
{
/* a temporary solution */
if (strcmp (a2, "0.0.0.0") == 0)
{
xlat_env->cs = 1; /* success */
xlat_env->stop = 1;
break;
}
if (strcmp (a1, a2) == 0)
{
xlat_env->cs = 1; /* success */
xlat_env->stop = 1;
break;
}
}
}
else if (cu == 0)
{
/* a temporary solution */
if (strcmp (a2, "0.0.0.0") == 0)
{
xlat_env->cs = 1; /* success */
xlat_env->stop = 1;
break;
}
if (strcmp (a1, a2) == 0)
{
xlat_env->cs = 1; /* success */
xlat_env->stop = 1;
break;
}
}
break;
default:
eval_error (2, env,
_("INTERNAL ERROR at %s:%d: unhandled key %d; "
"please report"),
__FILE__, __LINE__,
key);
}
}
static struct rc_secdef_child translate_secdef_child = {
NULL,
CF_SUPERVISOR,
translate_kw,
translate_parser,
NULL
};
void
translate_section_init (void)
{
struct rc_secdef *sp = anubis_add_section ("TRANSLATION");
rc_secdef_add_child (sp, &translate_secdef_child);
}
/* EOF */
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