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Diffstat (limited to 'xlators/protocol/server/src/authenticate.c')
| -rw-r--r-- | xlators/protocol/server/src/authenticate.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/xlators/protocol/server/src/authenticate.c b/xlators/protocol/server/src/authenticate.c new file mode 100644 index 000000000..5205b54df --- /dev/null +++ b/xlators/protocol/server/src/authenticate.c @@ -0,0 +1,249 @@ +/* + 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 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 + +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif + +#include <stdio.h> +#include <dlfcn.h> +#include <errno.h> +#include "authenticate.h" + +static void +init (dict_t *this, + char *key, + data_t *value, + void *data) +{ + void *handle = NULL; + char *auth_file = NULL; + auth_handle_t *auth_handle = NULL; + auth_fn_t authenticate = NULL; + int *error = NULL; + int ret = 0; + + /* It gets over written */ + error = data; + + if (!strncasecmp (key, "ip", strlen ("ip"))) { + gf_log ("authenticate", GF_LOG_ERROR, + "AUTHENTICATION MODULE \"IP\" HAS BEEN REPLACED " + "BY \"ADDR\""); + dict_set (this, key, data_from_dynptr (NULL, 0)); + /* TODO: 1.3.x backword compatibility */ + // *error = -1; + // return; + key = "addr"; + } + + ret = gf_asprintf (&auth_file, "%s/%s.so", LIBDIR, key); + if (-1 == ret) { + gf_log ("authenticate", GF_LOG_ERROR, "asprintf failed"); + dict_set (this, key, data_from_dynptr (NULL, 0)); + *error = -1; + return; + } + + handle = dlopen (auth_file, RTLD_LAZY); + if (!handle) { + gf_log ("authenticate", GF_LOG_ERROR, "dlopen(%s): %s\n", + auth_file, dlerror ()); + dict_set (this, key, data_from_dynptr (NULL, 0)); + GF_FREE (auth_file); + *error = -1; + return; + } + GF_FREE (auth_file); + + authenticate = dlsym (handle, "gf_auth"); + if (!authenticate) { + gf_log ("authenticate", GF_LOG_ERROR, + "dlsym(gf_auth) on %s\n", dlerror ()); + dict_set (this, key, data_from_dynptr (NULL, 0)); + *error = -1; + return; + } + + auth_handle = GF_CALLOC (1, sizeof (*auth_handle), + gf_common_mt_auth_handle_t); + if (!auth_handle) { + gf_log ("authenticate", GF_LOG_ERROR, "Out of memory"); + dict_set (this, key, data_from_dynptr (NULL, 0)); + *error = -1; + return; + } + auth_handle->vol_opt = GF_CALLOC (1, sizeof (volume_opt_list_t), + gf_common_mt_volume_opt_list_t); + auth_handle->vol_opt->given_opt = dlsym (handle, "options"); + if (auth_handle->vol_opt->given_opt == NULL) { + gf_log ("authenticate", GF_LOG_DEBUG, + "volume option validation not specified"); + } + + auth_handle->authenticate = authenticate; + auth_handle->handle = handle; + + dict_set (this, key, + data_from_dynptr (auth_handle, sizeof (*auth_handle))); +} + +static void +fini (dict_t *this, + char *key, + data_t *value, + void *data) +{ + auth_handle_t *handle = data_to_ptr (value); + if (handle) { + dlclose (handle->handle); + } +} + +int32_t +gf_auth_init (xlator_t *xl, dict_t *auth_modules) +{ + int ret = 0; + auth_handle_t *handle = NULL; + data_pair_t *pair = NULL; + dict_foreach (auth_modules, init, &ret); + if (!ret) { + pair = auth_modules->members_list; + while (pair) { + handle = data_to_ptr (pair->value); + if (handle) { + list_add_tail (&(handle->vol_opt->list), + &(xl->volume_options)); + if (-1 == + validate_xlator_volume_options (xl, + handle->vol_opt->given_opt)) { + gf_log ("authenticate", GF_LOG_ERROR, + "volume option validation " + "failed"); + ret = -1; + } + } + pair = pair->next; + } + } + if (ret) { + gf_log (xl->name, GF_LOG_ERROR, "authentication init failed"); + dict_foreach (auth_modules, fini, &ret); + ret = -1; + } + return ret; +} + +static dict_t *__input_params; +static dict_t *__config_params; + +void +map (dict_t *this, + char *key, + data_t *value, + void *data) +{ + dict_t *res = data; + auth_fn_t authenticate; + auth_handle_t *handle = NULL; + + if (value && (handle = data_to_ptr (value)) && + (authenticate = handle->authenticate)) { + dict_set (res, key, + int_to_data (authenticate (__input_params, + __config_params))); + } else { + dict_set (res, key, int_to_data (AUTH_DONT_CARE)); + } +} + +void +reduce (dict_t *this, + char *key, + data_t *value, + void *data) +{ + int64_t val = 0; + int64_t *res = data; + if (!data) + return; + + val = data_to_int64 (value); + switch (val) + { + case AUTH_ACCEPT: + if (AUTH_DONT_CARE == *res) + *res = AUTH_ACCEPT; + break; + + case AUTH_REJECT: + *res = AUTH_REJECT; + break; + + case AUTH_DONT_CARE: + break; + } +} + + +auth_result_t +gf_authenticate (dict_t *input_params, + dict_t *config_params, + dict_t *auth_modules) +{ + dict_t *results = NULL; + int64_t result = AUTH_DONT_CARE; + + results = get_new_dict (); + __input_params = input_params; + __config_params = config_params; + + dict_foreach (auth_modules, map, results); + + dict_foreach (results, reduce, &result); + if (AUTH_DONT_CARE == result) { + data_t *peerinfo_data = dict_get (input_params, "peer-info-name"); + char *name = NULL; + + if (peerinfo_data) { + name = peerinfo_data->data; + } + + gf_log ("auth", GF_LOG_ERROR, + "no authentication module is interested in " + "accepting remote-client %s", name); + result = AUTH_REJECT; + } + + dict_destroy (results); + return result; +} + +void +gf_auth_fini (dict_t *auth_modules) +{ + int32_t dummy; + + dict_foreach (auth_modules, fini, &dummy); +} |