diff options
Diffstat (limited to 'xlators/protocol/auth/addr/src/addr.c')
| -rw-r--r-- | xlators/protocol/auth/addr/src/addr.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/xlators/protocol/auth/addr/src/addr.c b/xlators/protocol/auth/addr/src/addr.c new file mode 100644 index 00000000000..a8803a39fe2 --- /dev/null +++ b/xlators/protocol/auth/addr/src/addr.c @@ -0,0 +1,224 @@ +/* + Copyright (c) 2007-2009 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 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 + General Public License for more details. + + You should have received a copy of the GNU 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 + +auth_result_t +gf_auth (dict_t *input_params, dict_t *config_params) +{ + int ret = 0; + char *name = NULL; + char *searchstr = NULL; + char peer_addr[UNIX_PATH_MAX]; + data_t *peer_info_data = NULL; + peer_info_t *peer_info = NULL; + data_t *allow_addr = NULL, *reject_addr = NULL; + char is_inet_sdp = 0; + + name = data_to_str (dict_get (input_params, "remote-subvolume")); + if (!name) { + gf_log ("authenticate/addr", + GF_LOG_ERROR, + "remote-subvolume not specified"); + return AUTH_DONT_CARE; + } + + ret = asprintf (&searchstr, "auth.addr.%s.allow", name); + if (-1 == ret) { + gf_log ("auth/addr", GF_LOG_ERROR, + "asprintf failed while setting search string"); + return AUTH_DONT_CARE; + } + allow_addr = dict_get (config_params, + searchstr); + free (searchstr); + + ret = asprintf (&searchstr, "auth.addr.%s.reject", name); + if (-1 == ret) { + gf_log ("auth/addr", GF_LOG_ERROR, + "asprintf failed while setting search string"); + return AUTH_DONT_CARE; + } + reject_addr = dict_get (config_params, + searchstr); + free (searchstr); + + if (!allow_addr) { + /* TODO: backword compatibility */ + ret = asprintf (&searchstr, "auth.ip.%s.allow", name); + if (-1 == ret) { + gf_log ("auth/addr", GF_LOG_ERROR, + "asprintf failed while setting search string"); + return AUTH_DONT_CARE; + } + allow_addr = dict_get (config_params, searchstr); + 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); + return AUTH_DONT_CARE; + } + + peer_info_data = dict_get (input_params, "peer-info"); + if (!peer_info_data) { + gf_log ("authenticate/addr", + GF_LOG_ERROR, + "peer-info not present"); + return AUTH_DONT_CARE; + } + + 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: + { + char *service; + uint16_t peer_port; + 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); + return AUTH_DONT_CARE; + } + 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); + return AUTH_DONT_CARE; + } + } + + if (reject_addr) { + char *addr_str = NULL; + char *tmp; + char *addr_cpy = strdup (reject_addr->data); + + addr_str = strtok_r (addr_cpy, ADDR_DELIMITER, &tmp); + + while (addr_str) { + char negate = 0, match =0; + 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) { + free (addr_cpy); + return AUTH_REJECT; + } + addr_str = strtok_r (NULL, ADDR_DELIMITER, &tmp); + } + free (addr_cpy); + } + + if (allow_addr) { + char *addr_str = NULL; + char *tmp; + char *addr_cpy = strdup (allow_addr->data); + + addr_str = strtok_r (addr_cpy, ADDR_DELIMITER, &tmp); + + while (addr_str) { + char negate = 0, match = 0; + 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) { + free (addr_cpy); + return AUTH_ACCEPT; + } + addr_str = strtok_r (NULL, ADDR_DELIMITER, &tmp); + } + free (addr_cpy); + } + + return AUTH_DONT_CARE; +} + +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} } +}; |