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/*
* $Id: re_group.c,v 1.1 2005/11/21 18:12:35 bogdan_iancu Exp $
*
* Copyright (C) 2005-2007 Voice Sistem SRL
*
* This file is part of openser, a free SIP server.
*
* openser 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 2 of the License, or
* (at your option) any later version
*
* openser 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* History:
* --------
* 2005-10-06 - created by bogdan
*/
#include <regex.h>
#include "../../str.h"
#include "../../mem/mem.h"
#include "group_mod.h"
#include "re_group.h"
#include "group.h"
struct re_grp {
regex_t re;
int gid;
struct re_grp *next;
};
static struct re_grp *re_list = 0;
static int add_re(char *re, int gid)
{
struct re_grp *rg;
DBG("DEBUG:group:add_re: adding <%s> with %d\n",re, gid);
rg = (struct re_grp*)pkg_malloc(sizeof(struct re_grp));
if (rg==0) {
LOG(L_ERR,"ERROR:group:add_re: no more pkg mem\n");
goto error;
}
memset( rg, 0, sizeof(struct re_grp));
if (regcomp(&rg->re, re, REG_EXTENDED|REG_ICASE|REG_NEWLINE) ) {
LOG(L_ERR, "ERROR:group:add_re: bad re %s\n", re);
pkg_free(rg);
goto error;
}
rg->gid = gid;
rg->next = re_list;
re_list = rg;
return 0;
error:
return -1;
}
int load_re( str *table )
{
db_key_t cols[2];
db_res_t* res;
db_row_t* row;
int n;
cols[0] = re_exp_column.s;
cols[1] = re_gid_column.s;
if (group_dbf.use_table(group_dbh, table->s) < 0) {
LOG(L_ERR, "ERROR:group:load_re: failed to set table <%s>\n",
table->s);
goto error;
}
if (group_dbf.query(group_dbh, 0, 0, 0, cols, 0, 2, 0, &res) < 0) {
LOG(L_ERR, "ERROR:group:load_re: Error while querying database\n");
goto error;
}
for( n=0 ; n<RES_ROW_N(res) ; n++) {
row = &res->rows[n];
/* validate row */
if (row->values[0].nul || row->values[0].type!=DB_STRING) {
LOG(L_ERR,"ERROR:group:load_re: empty or non-string "
"value for <%s>(re) column\n",re_exp_column.s);
goto error1;
}
if (row->values[1].nul || row->values[1].type!=DB_INT) {
LOG(L_ERR,"ERROR:group:load_re: empty or non-integer "
"value for <%s>(gid) column\n",re_gid_column.s);
goto error1;
}
if ( add_re( (char*)row->values[0].val.string_val,
row->values[1].val.int_val)!=0 ) {
LOG(L_ERR,"ERROR:group:load_re: failed to add row\n");
goto error1;
}
}
DBG("DEBUG:group:load_re: %d rules were loaded\n", n);
group_dbf.free_result(group_dbh, res);
return 0;
error1:
group_dbf.free_result(group_dbh, res);
error:
return -1;
}
int get_user_group(struct sip_msg *req, char *user, char *avp)
{
static char uri_buf[MAX_URI_SIZE];
str username;
str domain;
struct gid_spec *gs;
struct re_grp *rg;
regmatch_t pmatch;
char *c;
int n;
if (get_username_domain( req, (group_check_p)user, &username, &domain)!=0){
LOG(L_ERR, "ERROR:group:get_user_group: failed to get "
"username@domain\n");
goto error;
}
if ( 4 + username.len + 1 + domain.len + 1 > MAX_URI_SIZE ) {
LOG(L_ERR, "ERROR:group:get_user_group: URI to large!!\n");
goto error;
}
*(int*)uri_buf = htonl(('s'<<24) + ('i'<<16) + ('p'<<8) + ':');
c = uri_buf + 4;
memcpy( c, username.s, username.len);
c += username.len;
*(c++) = '@';
memcpy( c, domain.s, domain.len);
c += domain.len;
*c = 0;
DBG("DEBUG:group:get_user_group: getting groups for <%s>\n",uri_buf);
gs = (struct gid_spec*)avp;
/* check against all re groups */
for( rg=re_list,n=0 ; rg ; rg=rg->next ) {
if (regexec( &rg->re, uri_buf, 1, &pmatch, 0)==0) {
DBG("DEBUG:group:get_user_group: user matched to group %d!\n",
rg->gid);
/* match -> add the gid as AVP */
if ( add_avp( (unsigned short)gs->avp_type, gs->avp_name,
(int_str)rg->gid )!= 0 ) {
LOG(L_ERR, "ERROR:group:get_user_group: failed to add avp\n");
goto error;
}
n++;
/* continue? */
if (multiple_gid==0)
break;
}
}
return n?n:-1;
error:
return -1;
}
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