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/*
SSSD
Test LDAP Module
Copyright (C) Simo Sorce <ssorce@redhat.com> 2008
This program 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.
This program 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/>.
*/
#include <nss.h>
#include <errno.h>
#include <pwd.h>
#include <grp.h>
#include "util/util.h"
#include "providers/dp_backend.h"
struct ldap_nss_ops {
enum nss_status (*getpwnam_r)(const char *name, struct passwd *result,
char *buffer, size_t buflen, int *errnop);
enum nss_status (*getpwuid_r)(uid_t uid, struct passwd *result,
char *buffer, size_t buflen, int *errnop);
enum nss_status (*setpwent)(void);
enum nss_status (*getpwent_r)(struct passwd *result,
char *buffer, size_t buflen, int *errnop);
enum nss_status (*endpwent)(void);
enum nss_status (*getgrnam_r)(const char *name, struct group *result,
char *buffer, size_t buflen, int *errnop);
enum nss_status (*getgrgid_r)(gid_t gid, struct group *result,
char *buffer, size_t buflen, int *errnop);
enum nss_status (*setgrent)(void);
enum nss_status (*getgrent_r)(struct group *result,
char *buffer, size_t buflen, int *errnop);
enum nss_status (*endgrent)(void);
enum nss_status (*initgroups_dyn)(const char *user, gid_t group,
long int *start, long int *size,
gid_t **groups, long int limit,
int *errnop);
};
struct ldap_ctx {
struct ldap_nss_ops ops;
};
static int get_pw_name(struct be_ctx *be_ctx, struct ldap_ctx *ldap_ctx, char *name)
{
struct ldap_nss_ops *ops = &ldap_ctx->ops;
enum nss_status status;
struct passwd result;
char *buffer;
int ret;
buffer = talloc_size(NULL, 4096);
if (!buffer) return ENOMEM;
status = ops->getpwnam_r(name, &result, buffer, 4096, &ret);
switch (status) {
case NSS_STATUS_NOTFOUND:
ret = dp_be_remove_account_posix(be_ctx, name);
break;
case NSS_STATUS_SUCCESS:
ret = dp_be_store_account_posix(be_ctx, name, result.pw_passwd,
result.pw_uid, result.pw_gid,
result.pw_gecos, result.pw_dir,
result.pw_shell);
break;
default:
DEBUG(2, ("ldap->getpwnam_r failed for '%s' (%d)[%s]\n",
name, ret, strerror(ret)));
talloc_free(buffer);
return ret;
}
if (ret != EOK) {
DEBUG(1, ("Failed to update LDB Cache for '%s' (%d) !?\n",
name, ret));
}
talloc_free(buffer);
return ret;
}
static int ldap_check_online(struct be_ctx *be_ctx, int *reply)
{
*reply = MOD_ONLINE;
return EOK;
}
static int ldap_get_account_info(struct be_ctx *be_ctx,
int entry_type, int attr_type,
int filter_type, char *filter_value)
{
struct ldap_ctx *ctx;
ctx = talloc_get_type(be_ctx->pvt_data, struct ldap_ctx);
switch (entry_type) {
case BE_REQ_USER: /* user */
switch (filter_type) {
case BE_FILTER_NAME:
switch (attr_type) {
case BE_ATTR_CORE:
if (strchr(filter_value, '*')) {
/* TODO */
} else {
return get_pw_name(be_ctx, ctx, filter_value);
}
break;
default:
return EINVAL;
}
break;
case BE_FILTER_IDNUM:
break;
default:
return EINVAL;
}
break;
case BE_REQ_GROUP: /* group */
/* TODO */
return EOK;
default: /*fail*/
return EINVAL;
}
return EOK;
}
struct be_mod_ops ldap_mod_ops = {
.check_online = ldap_check_online,
.get_account_info = ldap_get_account_info
};
int sssm_ldap_init(struct be_ctx *bectx, struct be_mod_ops **ops, void **pvt_data)
{
struct ldap_ctx *ctx;
void *handle;
int ret;
ctx = talloc(bectx, struct ldap_ctx);
if (!ctx) {
return ENOMEM;
}
handle = dlopen("/usr/lib64/libnss_ldap.so.2", RTLD_NOW);
if (!handle) {
DEBUG(0, ("Unable to load libnss_ldap module with path, error: %s\n", dlerror()));
ret = ELIBACC;
goto done;
}
ctx->ops.getpwnam_r = dlsym(handle, "_nss_ldap_getpwnam_r");
if (!ctx->ops.getpwnam_r) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.getpwuid_r = dlsym(handle, "_nss_ldap_getpwuid_r");
if (!ctx->ops.getpwuid_r) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.setpwent = dlsym(handle, "_nss_ldap_setpwent");
if (!ctx->ops.setpwent) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.getpwent_r = dlsym(handle, "_nss_ldap_getpwent_r");
if (!ctx->ops.getpwent_r) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.endpwent = dlsym(handle, "_nss_ldap_endpwent");
if (!ctx->ops.endpwent) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.getgrnam_r = dlsym(handle, "_nss_ldap_getgrnam_r");
if (!ctx->ops.getgrnam_r) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.getgrgid_r = dlsym(handle, "_nss_ldap_getgrgid_r");
if (!ctx->ops.getgrgid_r) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.setgrent = dlsym(handle, "_nss_ldap_setgrent");
if (!ctx->ops.setgrent) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.getgrent_r = dlsym(handle, "_nss_ldap_getgrent_r");
if (!ctx->ops.getgrent_r) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.endgrent = dlsym(handle, "_nss_ldap_endgrent");
if (!ctx->ops.endgrent) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
ctx->ops.initgroups_dyn = dlsym(handle, "_nss_ldap_initgroups_dyn");
if (!ctx->ops.initgroups_dyn) {
DEBUG(0, ("Failed to load NSS fns, error: %s\n", dlerror()));
ret = ELIBBAD;
goto done;
}
*ops = &ldap_mod_ops;
*pvt_data = ctx;
ret = EOK;
done:
if (ret != EOK) {
talloc_free(ctx);
}
return ret;
}
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