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/*
Copyright (c) 2007-2010 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS 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
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include <fnmatch.h>
#include <sys/socket.h>
#include <netdb.h>
#include "authenticate.h"
#include "dict.h"
#define ADDR_DELIMITER " ,"
#define PRIVILEGED_PORT_CEILING 1024
#ifndef AF_INET_SDP
#define AF_INET_SDP 27
#endif
/* TODO: duplicate declaration */
typedef struct peer_info {
struct sockaddr_storage sockaddr;
socklen_t sockaddr_len;
char identifier[UNIX_PATH_MAX];
}peer_info_t;
auth_result_t
gf_auth (dict_t *input_params, dict_t *config_params)
{
auth_result_t result = AUTH_DONT_CARE;
int ret = 0;
char *name = NULL;
char *searchstr = NULL;
peer_info_t *peer_info = NULL;
data_t *peer_info_data = NULL;
data_t *allow_addr = NULL;
data_t *reject_addr = NULL;
char *addr_str = NULL;
char *tmp = NULL;
char *addr_cpy = NULL;
char *service = NULL;
uint16_t peer_port = 0;
char is_inet_sdp = 0;
char negate = 0;
char match = 0;
char peer_addr[UNIX_PATH_MAX];
name = data_to_str (dict_get (input_params, "remote-subvolume"));
if (!name) {
gf_log ("authenticate/addr", GF_LOG_DEBUG,
"remote-subvolume not specified");
goto out;
}
ret = gf_asprintf (&searchstr, "auth.addr.%s.allow", name);
if (-1 == ret) {
gf_log ("auth/addr", GF_LOG_DEBUG,
"asprintf failed while setting search string");
goto out;
}
allow_addr = dict_get (config_params, searchstr);
GF_FREE (searchstr);
ret = gf_asprintf (&searchstr, "auth.addr.%s.reject", name);
if (-1 == ret) {
gf_log ("auth/addr", GF_LOG_ERROR,
"asprintf failed while setting search string");
goto out;
}
reject_addr = dict_get (config_params, searchstr);
GF_FREE (searchstr);
if (!allow_addr) {
/* TODO: backword compatibility */
ret = gf_asprintf (&searchstr, "auth.ip.%s.allow", name);
if (-1 == ret) {
gf_log ("auth/addr", GF_LOG_ERROR,
"asprintf failed while setting search string");
goto out;
}
allow_addr = dict_get (config_params, searchstr);
GF_FREE (searchstr);
}
if (!(allow_addr || reject_addr)) {
gf_log ("auth/addr", GF_LOG_DEBUG,
"none of the options auth.addr.%s.allow or "
"auth.addr.%s.reject specified, returning auth_dont_care",
name, name);
goto out;
}
peer_info_data = dict_get (input_params, "peer-info");
if (!peer_info_data) {
gf_log ("auth/addr", GF_LOG_ERROR,
"peer-info not present");
goto out;
}
peer_info = data_to_ptr (peer_info_data);
switch (((struct sockaddr *) &peer_info->sockaddr)->sa_family)
{
case AF_INET_SDP:
is_inet_sdp = 1;
((struct sockaddr *) &peer_info->sockaddr)->sa_family = AF_INET;
case AF_INET:
case AF_INET6:
{
strcpy (peer_addr, peer_info->identifier);
service = strrchr (peer_addr, ':');
*service = '\0';
service ++;
if (is_inet_sdp) {
((struct sockaddr *) &peer_info->sockaddr)->sa_family = AF_INET_SDP;
}
peer_port = atoi (service);
if (peer_port >= PRIVILEGED_PORT_CEILING) {
gf_log ("auth/addr", GF_LOG_ERROR,
"client is bound to port %d which is not privileged",
peer_port);
goto out;
}
break;
case AF_UNIX:
strcpy (peer_addr, peer_info->identifier);
break;
default:
gf_log ("authenticate/addr", GF_LOG_ERROR,
"unknown address family %d",
((struct sockaddr *) &peer_info->sockaddr)->sa_family);
goto out;
}
}
if (reject_addr) {
addr_cpy = gf_strdup (reject_addr->data);
if (!addr_cpy)
goto out;
addr_str = strtok_r (addr_cpy, ADDR_DELIMITER, &tmp);
while (addr_str) {
gf_log (name, GF_LOG_DEBUG,
"rejected = \"%s\", received addr = \"%s\"",
addr_str, peer_addr);
if (addr_str[0] == '!') {
negate = 1;
addr_str++;
}
match = fnmatch (addr_str, peer_addr, 0);
if (negate ? match : !match) {
result = AUTH_REJECT;
goto out;
}
addr_str = strtok_r (NULL, ADDR_DELIMITER, &tmp);
}
GF_FREE (addr_cpy);
}
if (allow_addr) {
addr_cpy = gf_strdup (allow_addr->data);
if (!addr_cpy)
goto out;
addr_str = strtok_r (addr_cpy, ADDR_DELIMITER, &tmp);
while (addr_str) {
gf_log (name, GF_LOG_DEBUG,
"allowed = \"%s\", received addr = \"%s\"",
addr_str, peer_addr);
if (addr_str[0] == '!') {
negate = 1;
addr_str++;
}
match = fnmatch (addr_str, peer_addr, 0);
if (negate ? match : !match) {
result = AUTH_ACCEPT;
goto out;
}
addr_str = strtok_r (NULL, ADDR_DELIMITER, &tmp);
}
}
out:
if (addr_cpy)
GF_FREE (addr_cpy);
return result;
}
struct volume_options options[] = {
{ .key = {"auth.addr.*.allow"},
.type = GF_OPTION_TYPE_ANY
},
{ .key = {"auth.addr.*.reject"},
.type = GF_OPTION_TYPE_ANY
},
/* Backword compatibility */
{ .key = {"auth.ip.*.allow"},
.type = GF_OPTION_TYPE_ANY
},
{ .key = {NULL} }
};
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