diff options
Diffstat (limited to 'server/responder/nss')
-rw-r--r-- | server/responder/nss/nsssrv.c | 367 | ||||
-rw-r--r-- | server/responder/nss/nsssrv.h | 70 | ||||
-rw-r--r-- | server/responder/nss/nsssrv_cmd.c | 3182 | ||||
-rw-r--r-- | server/responder/nss/nsssrv_nc.c | 321 | ||||
-rw-r--r-- | server/responder/nss/nsssrv_nc.h | 51 |
5 files changed, 0 insertions, 3991 deletions
diff --git a/server/responder/nss/nsssrv.c b/server/responder/nss/nsssrv.c deleted file mode 100644 index 7de346f0..00000000 --- a/server/responder/nss/nsssrv.c +++ /dev/null @@ -1,367 +0,0 @@ -/* - SSSD - - NSS Responder - - 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 <stdio.h> -#include <unistd.h> -#include <fcntl.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/socket.h> -#include <sys/un.h> -#include <string.h> -#include <sys/time.h> -#include <errno.h> - -#include "popt.h" -#include "util/util.h" -#include "responder/nss/nsssrv.h" -#include "responder/nss/nsssrv_nc.h" -#include "db/sysdb.h" -#include "confdb/confdb.h" -#include "dbus/dbus.h" -#include "sbus/sssd_dbus.h" -#include "responder/common/responder_packet.h" -#include "providers/data_provider.h" -#include "monitor/monitor_interfaces.h" -#include "sbus/sbus_client.h" - -#define SSS_NSS_PIPE_NAME "nss" - -#define DEFAULT_PWFIELD "*" - -static int service_reload(DBusMessage *message, struct sbus_connection *conn); - -struct sbus_method monitor_nss_methods[] = { - { MON_CLI_METHOD_PING, monitor_common_pong }, - { MON_CLI_METHOD_RELOAD, service_reload }, - { MON_CLI_METHOD_RES_INIT, monitor_common_res_init }, - { NULL, NULL } -}; - -struct sbus_interface monitor_nss_interface = { - MONITOR_INTERFACE, - MONITOR_PATH, - SBUS_DEFAULT_VTABLE, - monitor_nss_methods, - NULL -}; - -static int service_reload(DBusMessage *message, struct sbus_connection *conn) -{ - /* Monitor calls this function when we need to reload - * our configuration information. Perform whatever steps - * are needed to update the configuration objects. - */ - - /* Send an empty reply to acknowledge receipt */ - return monitor_common_pong(message, conn); -} - -static int nss_get_config(struct nss_ctx *nctx, - struct resp_ctx *rctx, - struct confdb_ctx *cdb) -{ - TALLOC_CTX *tmpctx; - struct sss_domain_info *dom; - char *domain, *name; - char **filter_list; - int ret, i; - - tmpctx = talloc_new(nctx); - if (!tmpctx) return ENOMEM; - - ret = confdb_get_int(cdb, nctx, CONFDB_NSS_CONF_ENTRY, - CONFDB_NSS_ENUM_CACHE_TIMEOUT, 120, - &nctx->enum_cache_timeout); - if (ret != EOK) goto done; - - ret = confdb_get_int(cdb, nctx, CONFDB_NSS_CONF_ENTRY, - CONFDB_NSS_ENTRY_NEG_TIMEOUT, 15, - &nctx->neg_timeout); - if (ret != EOK) goto done; - - ret = confdb_get_bool(cdb, nctx, CONFDB_NSS_CONF_ENTRY, - CONFDB_NSS_FILTER_USERS_IN_GROUPS, true, - &nctx->filter_users_in_groups); - if (ret != EOK) goto done; - - - ret = confdb_get_int(cdb, nctx, CONFDB_NSS_CONF_ENTRY, - CONFDB_NSS_ENTRY_CACHE_NOWAIT_PERCENTAGE, 0, - &nctx->cache_refresh_percent); - if (ret != EOK) goto done; - if (nctx->cache_refresh_percent < 0 || - nctx->cache_refresh_percent > 99) { - DEBUG(0,("Configuration error: entry_cache_nowait_percentage is" - "invalid. Disabling feature.\n")); - nctx->cache_refresh_percent = 0; - } - - ret = confdb_get_string_as_list(cdb, tmpctx, CONFDB_NSS_CONF_ENTRY, - CONFDB_NSS_FILTER_USERS, &filter_list); - if (ret == ENOENT) { - filter_list = talloc_array(tmpctx, char *, 2); - filter_list[0] = talloc_strdup(tmpctx, "root"); - filter_list[1] = NULL; - if (!filter_list || !filter_list[0]) { - ret = ENOMEM; - goto done; - } - ret = EOK; - } - else if (ret != EOK) goto done; - - for (i = 0; (filter_list && filter_list[i]); i++) { - ret = sss_parse_name(tmpctx, nctx->rctx->names, - filter_list[i], &domain, &name); - if (ret != EOK) { - DEBUG(1, ("Invalid name in filterUsers list: [%s] (%d)\n", - filter_list[i], ret)); - continue; - } - if (domain) { - ret = nss_ncache_set_user(nctx->ncache, true, domain, name); - if (ret != EOK) { - DEBUG(1, ("Failed to store permanent user filter for [%s]" - " (%d [%s])\n", filter_list[i], - ret, strerror(ret))); - continue; - } - } else { - for (dom = rctx->domains; dom; dom = dom->next) { - ret = nss_ncache_set_user(nctx->ncache, true, dom->name, name); - if (ret != EOK) { - DEBUG(1, ("Failed to store permanent user filter for" - " [%s:%s] (%d [%s])\n", - dom->name, filter_list[i], - ret, strerror(ret))); - continue; - } - } - } - } - - ret = confdb_get_string_as_list(cdb, tmpctx, CONFDB_NSS_CONF_ENTRY, - CONFDB_NSS_FILTER_GROUPS, &filter_list); - if (ret == ENOENT) { - filter_list = talloc_array(tmpctx, char *, 2); - filter_list[0] = talloc_strdup(tmpctx, "root"); - filter_list[1] = NULL; - if (!filter_list || !filter_list[0]) { - ret = ENOMEM; - goto done; - } - ret = EOK; - } - else if (ret != EOK) goto done; - - for (i = 0; (filter_list && filter_list[i]); i++) { - ret = sss_parse_name(tmpctx, nctx->rctx->names, - filter_list[i], &domain, &name); - if (ret != EOK) { - DEBUG(1, ("Invalid name in filterGroups list: [%s] (%d)\n", - filter_list[i], ret)); - continue; - } - if (domain) { - ret = nss_ncache_set_group(nctx->ncache, true, domain, name); - if (ret != EOK) { - DEBUG(1, ("Failed to store permanent group filter for" - " [%s] (%d [%s])\n", filter_list[i], - ret, strerror(ret))); - continue; - } - } else { - for (dom = rctx->domains; dom; dom = dom->next) { - ret = nss_ncache_set_group(nctx->ncache, true, dom->name, name); - if (ret != EOK) { - DEBUG(1, ("Failed to store permanent group filter for" - " [%s:%s] (%d [%s])\n", - dom->name, filter_list[i], - ret, strerror(ret))); - continue; - } - } - } - } - - ret = confdb_get_string(cdb, nctx, CONFDB_NSS_CONF_ENTRY, - CONFDB_NSS_PWFIELD, DEFAULT_PWFIELD, - &nctx->pwfield); - if (ret != EOK) goto done; - - ret = 0; -done: - talloc_free(tmpctx); - return ret; -} - -static struct sbus_method nss_dp_methods[] = { - { NULL, NULL } -}; - -struct sbus_interface nss_dp_interface = { - DP_INTERFACE, - DP_PATH, - SBUS_DEFAULT_VTABLE, - nss_dp_methods, - NULL -}; - - -static void nss_dp_reconnect_init(struct sbus_connection *conn, - int status, void *pvt) -{ - struct be_conn *be_conn = talloc_get_type(pvt, struct be_conn); - int ret; - - /* Did we reconnect successfully? */ - if (status == SBUS_RECONNECT_SUCCESS) { - DEBUG(1, ("Reconnected to the Data Provider.\n")); - - /* Identify ourselves to the data provider */ - ret = dp_common_send_id(be_conn->conn, - DATA_PROVIDER_VERSION, - "NSS", be_conn->domain->name); - /* all fine */ - if (ret == EOK) return; - } - - /* Failed to reconnect */ - DEBUG(0, ("Could not reconnect to %s provider.\n", - be_conn->domain->name)); - - /* FIXME: kill the frontend and let the monitor restart it ? */ - /* nss_shutdown(rctx); */ -} - -int nss_process_init(TALLOC_CTX *mem_ctx, - struct tevent_context *ev, - struct confdb_ctx *cdb) -{ - struct sss_cmd_table *nss_cmds; - struct be_conn *iter; - struct nss_ctx *nctx; - int ret, max_retries; - - nctx = talloc_zero(mem_ctx, struct nss_ctx); - if (!nctx) { - DEBUG(0, ("fatal error initializing nss_ctx\n")); - return ENOMEM; - } - - ret = nss_ncache_init(nctx, &nctx->ncache); - if (ret != EOK) { - DEBUG(0, ("fatal error initializing negative cache\n")); - return ret; - } - - nss_cmds = get_nss_cmds(); - - ret = sss_process_init(nctx, ev, cdb, - nss_cmds, - SSS_NSS_SOCKET_NAME, NULL, - CONFDB_NSS_CONF_ENTRY, - NSS_SBUS_SERVICE_NAME, - NSS_SBUS_SERVICE_VERSION, - &monitor_nss_interface, - "NSS", &nss_dp_interface, - &nctx->rctx); - if (ret != EOK) { - return ret; - } - nctx->rctx->pvt_ctx = nctx; - - ret = nss_get_config(nctx, nctx->rctx, cdb); - if (ret != EOK) { - DEBUG(0, ("fatal error getting nss config\n")); - return ret; - } - - /* Enable automatic reconnection to the Data Provider */ - ret = confdb_get_int(nctx->rctx->cdb, nctx->rctx, - CONFDB_NSS_CONF_ENTRY, - CONFDB_SERVICE_RECON_RETRIES, - 3, &max_retries); - if (ret != EOK) { - DEBUG(0, ("Failed to set up automatic reconnection\n")); - return ret; - } - - for (iter = nctx->rctx->be_conns; iter; iter = iter->next) { - sbus_reconnect_init(iter->conn, max_retries, - nss_dp_reconnect_init, iter); - } - - DEBUG(1, ("NSS Initialization complete\n")); - - return EOK; -} - -int main(int argc, const char *argv[]) -{ - int opt; - poptContext pc; - struct main_context *main_ctx; - int ret; - - struct poptOption long_options[] = { - POPT_AUTOHELP - SSSD_MAIN_OPTS - { NULL } - }; - - pc = poptGetContext(argv[0], argc, argv, long_options, 0); - while((opt = poptGetNextOpt(pc)) != -1) { - switch(opt) { - default: - fprintf(stderr, "\nInvalid option %s: %s\n\n", - poptBadOption(pc, 0), poptStrerror(opt)); - poptPrintUsage(pc, stderr, 0); - return 1; - } - } - - poptFreeContext(pc); - - /* set up things like debug, signals, daemonization, etc... */ - debug_log_file = "sssd_nss"; - - ret = server_setup("sssd[nss]", 0, CONFDB_NSS_CONF_ENTRY, &main_ctx); - if (ret != EOK) return 2; - - ret = die_if_parent_died(); - if (ret != EOK) { - /* This is not fatal, don't return */ - DEBUG(2, ("Could not set up to exit when parent process does\n")); - } - - ret = nss_process_init(main_ctx, - main_ctx->event_ctx, - main_ctx->confdb_ctx); - if (ret != EOK) return 3; - - /* loop on main */ - server_loop(main_ctx); - - return 0; -} - diff --git a/server/responder/nss/nsssrv.h b/server/responder/nss/nsssrv.h deleted file mode 100644 index a6c66183..00000000 --- a/server/responder/nss/nsssrv.h +++ /dev/null @@ -1,70 +0,0 @@ -/* - SSSD - - NSS Responder, header file - - 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/>. -*/ - -#ifndef __NSSSRV_H__ -#define __NSSSRV_H__ - -#include <stdint.h> -#include <sys/un.h> -#include "config.h" -#include "talloc.h" -#include "tevent.h" -#include "ldb.h" -#include "dbus/dbus.h" -#include "sbus/sssd_dbus.h" -#include "responder/common/responder_packet.h" -#include "responder/common/responder.h" -#include "responder/nss/nsssrv_nc.h" - -#define NSS_SBUS_SERVICE_VERSION 0x0001 -#define NSS_SBUS_SERVICE_NAME "nss" - -#define NSS_PACKET_MAX_RECV_SIZE 1024 - -struct getent_ctx; - -struct nss_ctx { - struct resp_ctx *rctx; - - int neg_timeout; - struct nss_nc_ctx *ncache; - - int cache_refresh_percent; - - int enum_cache_timeout; - time_t last_user_enum; - time_t last_group_enum; - - struct getent_ctx *pctx; - struct getent_ctx *gctx; - - bool filter_users_in_groups; - - char *pwfield; -}; - -struct nss_packet; - -int nss_cmd_execute(struct cli_ctx *cctx); - -struct sss_cmd_table *get_nss_cmds(void); - -#endif /* __NSSSRV_H__ */ diff --git a/server/responder/nss/nsssrv_cmd.c b/server/responder/nss/nsssrv_cmd.c deleted file mode 100644 index 46d4a236..00000000 --- a/server/responder/nss/nsssrv_cmd.c +++ /dev/null @@ -1,3182 +0,0 @@ -/* - SSSD - - NSS Responder - - 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 "util/util.h" -#include "responder/nss/nsssrv.h" -#include "confdb/confdb.h" -#include "db/sysdb.h" -#include <time.h> - -struct nss_cmd_ctx { - struct cli_ctx *cctx; - char *name; - uint32_t id; - - bool immediate; - bool check_next; - bool enum_cached; -}; - -struct dom_ctx { - struct sss_domain_info *domain; - struct ldb_result *res; - int cur; -}; - -struct getent_ctx { - struct dom_ctx *doms; - int num; - int cur; -}; - -struct nss_dom_ctx { - struct nss_cmd_ctx *cmdctx; - struct sss_domain_info *domain; - - bool check_provider; - - /* cache results */ - struct ldb_result *res; -}; - -static int nss_cmd_send_error(struct nss_cmd_ctx *cmdctx, int err) -{ - struct cli_ctx *cctx = cmdctx->cctx; - int ret; - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - return ret; - } - - sss_packet_set_error(cctx->creq->out, err); - return EOK; -} - -#define NSS_CMD_FATAL_ERROR(cctx) do { \ - DEBUG(1,("Fatal error, killing connection!")); \ - talloc_free(cctx); \ - return; \ -} while(0) - -#define NSS_CMD_FATAL_ERROR_CODE(cctx, ret) do { \ - DEBUG(1,("Fatal error, killing connection!")); \ - talloc_free(cctx); \ - return ret; \ -} while(0) - -static struct sss_domain_info *nss_get_dom(struct sss_domain_info *doms, - const char *domain) -{ - struct sss_domain_info *dom; - - for (dom = doms; dom; dom = dom->next) { - if (strcasecmp(dom->name, domain) == 0) break; - } - if (!dom) DEBUG(2, ("Unknown domain [%s]!\n", domain)); - - return dom; -} - -static int fill_empty(struct sss_packet *packet) -{ - uint8_t *body; - size_t blen; - int ret; - - ret = sss_packet_grow(packet, 2*sizeof(uint32_t)); - if (ret != EOK) return ret; - - sss_packet_get_body(packet, &body, &blen); - ((uint32_t *)body)[0] = 0; /* num results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - - return EOK; -} - -/**************************************************************************** - * PASSWD db related functions - ***************************************************************************/ - -static int fill_pwent(struct sss_packet *packet, - struct sss_domain_info *dom, - struct nss_ctx *nctx, - bool filter_users, - struct ldb_message **msgs, - int count) -{ - struct ldb_message *msg; - uint8_t *body; - const char *name; - const char *gecos; - const char *homedir; - const char *shell; - uint32_t uid; - uint32_t gid; - size_t rsize, rp, blen; - size_t s1, s2, s3, s4, s5; - size_t dom_len = 0; - int delim = 1; - int i, ret, num, t; - bool add_domain = dom->fqnames; - const char *domain = dom->name; - const char *namefmt = nctx->rctx->names->fq_fmt; - bool packet_initialized = false; - int ncret; - - if (add_domain) dom_len = strlen(domain); - - rp = 2*sizeof(uint32_t); - - num = 0; - for (i = 0; i < count; i++) { - msg = msgs[i]; - - name = ldb_msg_find_attr_as_string(msg, SYSDB_NAME, NULL); - uid = ldb_msg_find_attr_as_uint64(msg, SYSDB_UIDNUM, 0); - gid = ldb_msg_find_attr_as_uint64(msg, SYSDB_GIDNUM, 0); - - if (!name || !uid || !gid) { - DEBUG(1, ("Incomplete user object for %s[%llu]! Skipping\n", - name?name:"<NULL>", (unsigned long long int)uid)); - continue; - } - - if (filter_users) { - ncret = nss_ncache_check_user(nctx->ncache, - nctx->neg_timeout, - domain, name); - if (ncret == EEXIST) { - DEBUG(4, ("User [%s@%s] filtered out! (negative cache)\n", - name, domain)); - continue; - } - } - - if (!packet_initialized) { - /* first 2 fields (len and reserved), filled up later */ - ret = sss_packet_grow(packet, 2*sizeof(uint32_t)); - if (ret != EOK) return ret; - packet_initialized = true; - } - - gecos = ldb_msg_find_attr_as_string(msg, SYSDB_GECOS, NULL); - homedir = ldb_msg_find_attr_as_string(msg, SYSDB_HOMEDIR, NULL); - shell = ldb_msg_find_attr_as_string(msg, SYSDB_SHELL, NULL); - - if (!gecos) gecos = ""; - if (!homedir) homedir = "/"; - if (!shell) shell = ""; - - s1 = strlen(name) + 1; - s2 = strlen(gecos) + 1; - s3 = strlen(homedir) + 1; - s4 = strlen(shell) + 1; - s5 = strlen(nctx->pwfield) + 1; - if (add_domain) s1 += delim + dom_len; - - rsize = 2*sizeof(uint32_t) +s1 + s2 + s3 + s4 + s5; - - ret = sss_packet_grow(packet, rsize); - if (ret != EOK) { - num = 0; - goto done; - } - sss_packet_get_body(packet, &body, &blen); - - ((uint32_t *)(&body[rp]))[0] = uid; - ((uint32_t *)(&body[rp]))[1] = gid; - rp += 2*sizeof(uint32_t); - - if (add_domain) { - ret = snprintf((char *)&body[rp], s1, namefmt, name, domain); - if (ret >= s1) { - /* need more space, got creative with the print format ? */ - t = ret - s1 + 1; - ret = sss_packet_grow(packet, t); - if (ret != EOK) { - num = 0; - goto done; - } - delim += t; - s1 += t; - sss_packet_get_body(packet, &body, &blen); - - /* retry */ - ret = snprintf((char *)&body[rp], s1, namefmt, name, domain); - } - - if (ret != s1-1) { - DEBUG(1, ("Failed to generate a fully qualified name for user " - "[%s] in [%s]! Skipping user.\n", name, domain)); - continue; - } - } else { - memcpy(&body[rp], name, s1); - } - rp += s1; - - memcpy(&body[rp], nctx->pwfield, s5); - rp += s5; - memcpy(&body[rp], gecos, s2); - rp += s2; - memcpy(&body[rp], homedir, s3); - rp += s3; - memcpy(&body[rp], shell, s4); - rp += s4; - - num++; - } - -done: - /* if there are no results just return ENOENT, - * let the caller decide if this is the last packet or not */ - if (!packet_initialized) return ENOENT; - - sss_packet_get_body(packet, &body, &blen); - ((uint32_t *)body)[0] = num; /* num results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - - return EOK; -} - -static errno_t check_cache(struct nss_dom_ctx *dctx, - struct nss_ctx *nctx, - struct ldb_result *res, - int req_type, - const char *opt_name, - uint32_t opt_id, - sss_dp_callback_t callback) -{ - errno_t ret; - int timeout; - time_t now; - uint64_t lastUpdate; - uint64_t cacheExpire = 0; - uint64_t midpoint_refresh; - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - bool off_band_update = false; - - /* when searching for a user, more than one reply is a db error */ - if ((req_type == SSS_DP_USER) && (res->count > 1)) { - DEBUG(1, ("getpwXXX call returned more than one result!" - " DB Corrupted?\n")); - ret = nss_cmd_send_error(cmdctx, ENOENT); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR_CODE(cctx, ENOENT); - } - sss_cmd_done(cctx, cmdctx); - return ENOENT; - } - - /* if we have any reply let's check cache validity */ - if (res->count > 0) { - - now = time(NULL); - - lastUpdate = ldb_msg_find_attr_as_uint64(res->msgs[0], - SYSDB_LAST_UPDATE, 0); - if (req_type == SSS_DP_INITGROUPS) { - cacheExpire = ldb_msg_find_attr_as_uint64(res->msgs[0], - SYSDB_INITGR_EXPIRE, 1); - } - if (cacheExpire == 0) { - cacheExpire = ldb_msg_find_attr_as_uint64(res->msgs[0], - SYSDB_CACHE_EXPIRE, 0); - } - - midpoint_refresh = 0; - if(nctx->cache_refresh_percent) { - midpoint_refresh = lastUpdate + - (cacheExpire - lastUpdate)*nctx->cache_refresh_percent/100; - if (midpoint_refresh - lastUpdate < 10) { - /* If the percentage results in an expiration - * less than ten seconds after the lastUpdate time, - * that's too often we will simply set it to 10s - */ - midpoint_refresh = lastUpdate+10; - } - } - - if (cacheExpire > now) { - /* cache still valid */ - - if (midpoint_refresh && midpoint_refresh < now) { - /* We're past the the cache refresh timeout - * We'll return the value from the cache, but we'll also - * queue the cache entry for update out-of-band. - */ - DEBUG(6, ("Performing midpoint cache update on [%s]\n", - opt_name)); - off_band_update = true; - } - else { - - /* Cache is still valid. Just return it. */ - return EOK; - } - } - } - - if (off_band_update) { - - timeout = SSS_CLI_SOCKET_TIMEOUT/2; - - /* No callback required - * This was an out-of-band update. We'll return EOK - * so the calling function can return the cached entry - * immediately. - */ - ret = sss_dp_send_acct_req(cctx->rctx, NULL, NULL, NULL, - timeout, dctx->domain->name, - true, req_type, - opt_name, opt_id); - if (ret != EOK) { - DEBUG(3, ("Failed to dispatch request: %d(%s)\n", - ret, strerror(ret))); - } else { - - DEBUG(3, ("Updating cache out-of-band\n")); - } - - } else { - /* This is a cache miss. Or the cache is expired. - * We need to get the updated user information before returning it. - */ - - /* dont loop forever :-) */ - dctx->check_provider = false; - timeout = SSS_CLI_SOCKET_TIMEOUT/2; - - /* keep around current data in case backend is offline */ - if (res->count) { - dctx->res = talloc_steal(dctx, res); - } - - ret = sss_dp_send_acct_req(cctx->rctx, cmdctx, - callback, dctx, timeout, - dctx->domain->name, - true, req_type, - opt_name, opt_id); - if (ret != EOK) { - DEBUG(3, ("Failed to dispatch request: %d(%s)\n", - ret, strerror(ret))); - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR_CODE(cctx, EIO); - } - sss_cmd_done(cctx, cmdctx); - return EIO; - } - - return EAGAIN; - } - - return EOK; -} - -static void nss_cmd_getpwnam_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr); - -static void nss_cmd_getpwnam_callback(void *ptr, int status, - struct ldb_result *res) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sysdb_ctx *sysdb; - struct sss_domain_info *dom; - struct nss_ctx *nctx; - uint8_t *body; - size_t blen; - bool neghit = false; - int ncret; - int ret; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - if (status != LDB_SUCCESS) { - ret = nss_cmd_send_error(cmdctx, status); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - - if (dctx->check_provider) { - ret = check_cache(dctx, nctx, res, - SSS_DP_USER, cmdctx->name, 0, - nss_cmd_getpwnam_dp_callback); - if (ret != EOK) { - /* Anything but EOK means we should reenter the mainloop - * because we may be refreshing the cache - */ - return; - } - } - - switch (res->count) { - case 0: - if (cmdctx->check_next) { - - ret = EOK; - - /* skip domains that require FQnames or have negative caches */ - for (dom = dctx->domain->next; dom; dom = dom->next) { - - if (dom->fqnames) continue; - - ncret = nss_ncache_check_user(nctx->ncache, - nctx->neg_timeout, - dom->name, cmdctx->name); - if (ncret == ENOENT) break; - - neghit = true; - } - /* reset neghit if we still have a domain to check */ - if (dom) neghit = false; - - if (neghit) { - DEBUG(2, ("User [%s] does not exist! (negative cache)\n", - cmdctx->name)); - ret = ENOENT; - } - if (dom == NULL) { - DEBUG(2, ("No matching domain found for [%s], fail!\n", - cmdctx->name)); - ret = ENOENT; - } - - if (ret == EOK) { - dctx->domain = dom; - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - if (dctx->res) talloc_free(res); - dctx->res = NULL; - - DEBUG(4, ("Requesting info for [%s@%s]\n", - cmdctx->name, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_getpwnam(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getpwnam_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - } - - /* we made another call, end here */ - if (ret == EOK) return; - } - - DEBUG(2, ("No results for getpwnam call\n")); - - /* set negative cache only if not result of cache check */ - if (!neghit) { - ret = nss_ncache_set_user(nctx->ncache, false, - dctx->domain->name, cmdctx->name); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - } - - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - break; - - case 1: - DEBUG(6, ("Returning info for user [%s]\n", cmdctx->name)); - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - ret = fill_pwent(cctx->creq->out, - dctx->domain, - nctx, false, - res->msgs, res->count); - if (ret == ENOENT) { - ret = fill_empty(cctx->creq->out); - } - sss_packet_set_error(cctx->creq->out, ret); - - break; - - default: - DEBUG(1, ("getpwnam call returned more than one result !?!\n")); - ret = nss_cmd_send_error(cmdctx, ENOENT); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - } - - sss_cmd_done(cctx, cmdctx); -} - -static void nss_cmd_getpwnam_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sysdb_ctx *sysdb; - int ret; - - if (err_maj) { - DEBUG(2, ("Unable to get information from Data Provider\n" - "Error: %u, %u, %s\n" - "Will try to return what we have in cache\n", - (unsigned int)err_maj, (unsigned int)err_min, err_msg)); - - if (!dctx->res) { - /* return 0 results */ - dctx->res = talloc_zero(dctx, struct ldb_result); - if (!dctx->res) { - ret = ENOMEM; - goto done; - } - } - - nss_cmd_getpwnam_callback(dctx, LDB_SUCCESS, dctx->res); - return; - } - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_getpwnam(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getpwnam_callback, dctx); - -done: - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache! (%d [%s])\n", - ret, strerror(ret))); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } -} - -static int nss_cmd_getpwnam(struct cli_ctx *cctx) -{ - struct nss_cmd_ctx *cmdctx; - struct nss_dom_ctx *dctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - const char *rawname; - char *domname; - uint8_t *body; - size_t blen; - int ret; - int ncret; - bool neghit = false; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - cmdctx = talloc_zero(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - - dctx = talloc_zero(cmdctx, struct nss_dom_ctx); - if (!dctx) { - ret = ENOMEM; - goto done; - } - dctx->cmdctx = cmdctx; - - /* get user name to query */ - sss_packet_get_body(cctx->creq->in, &body, &blen); - - /* if not terminated fail */ - if (body[blen -1] != '\0') { - ret = EINVAL; - goto done; - } - rawname = (const char *)body; - - domname = NULL; - ret = sss_parse_name(cmdctx, cctx->rctx->names, rawname, - &domname, &cmdctx->name); - if (ret != EOK) { - DEBUG(2, ("Invalid name received [%s]\n", rawname)); - ret = ENOENT; - goto done; - } - - DEBUG(4, ("Requesting info for [%s] from [%s]\n", - cmdctx->name, domname?domname:"<ALL>")); - - if (domname) { - dctx->domain = nss_get_dom(cctx->rctx->domains, domname); - if (!dctx->domain) { - ret = ENOENT; - goto done; - } - - /* verify this user has not yet been negatively cached, - * or has been permanently filtered */ - ncret = nss_ncache_check_user(nctx->ncache, nctx->neg_timeout, - dctx->domain->name, cmdctx->name); - if (ncret == EEXIST) { - neghit = true; - } - } - else { - /* skip domains that require FQnames or have negative caches */ - for (dom = cctx->rctx->domains; dom; dom = dom->next) { - - if (dom->fqnames) continue; - - /* verify this user has not yet been negatively cached, - * or has been permanently filtered */ - ncret = nss_ncache_check_user(nctx->ncache, nctx->neg_timeout, - dom->name, cmdctx->name); - if (ncret == ENOENT) break; - - neghit = true; - } - /* reset neghit if we still have a domain to check */ - if (dom) neghit = false; - - dctx->domain = dom; - } - if (neghit) { - DEBUG(2, ("User [%s] does not exist! (negative cache)\n", rawname)); - ret = ENOENT; - goto done; - } - if (dctx->domain == NULL) { - DEBUG(2, ("No matching domain found for [%s], fail!\n", rawname)); - ret = ENOENT; - goto done; - } - - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - - if (!domname) { - /* this is a multidomain search */ - cmdctx->check_next = true; - } - - DEBUG(4, ("Requesting info for [%s@%s]\n", - cmdctx->name, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - ret = EFAULT; - goto done; - } - ret = sysdb_getpwnam(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getpwnam_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - -done: - if (ret != EOK) { - if (ret == ENOENT) { - /* we do not have any entry to return */ - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret == EOK) { - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - } - } - if (ret != EOK) { - ret = nss_cmd_send_error(cmdctx, ret); - } - if (ret == EOK) { - sss_cmd_done(cctx, cmdctx); - } - return ret; - } - - return EOK; -} - -static void nss_cmd_getpwuid_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr); - -static void nss_cmd_getpwuid_callback(void *ptr, int status, - struct ldb_result *res) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - uint8_t *body; - size_t blen; - bool neghit = false; - int ret; - int ncret; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - if (status != LDB_SUCCESS) { - ret = nss_cmd_send_error(cmdctx, status); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - - if (dctx->check_provider) { - ret = check_cache(dctx, nctx, res, - SSS_DP_USER, NULL, cmdctx->id, - nss_cmd_getpwuid_dp_callback); - if (ret != EOK) { - /* Anything but EOK means we should reenter the mainloop - * because we may be refreshing the cache - */ - return; - } - } - - switch (res->count) { - case 0: - if (cmdctx->check_next) { - - ret = EOK; - - dom = dctx->domain->next; - ncret = nss_ncache_check_uid(nctx->ncache, nctx->neg_timeout, - cmdctx->id); - if (ncret == EEXIST) { - DEBUG(3, ("Uid [%lu] does not exist! (negative cache)\n", - (unsigned long)cmdctx->id)); - ret = ENOENT; - } - if (dom == NULL) { - DEBUG(0, ("No matching domain found for [%lu], fail!\n", - (unsigned long)cmdctx->id)); - ret = ENOENT; - } - - if (ret == EOK) { - dctx->domain = dom; - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - if (dctx->res) talloc_free(res); - dctx->res = NULL; - - DEBUG(4, ("Requesting info for [%s@%s]\n", - cmdctx->name, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_getpwuid(cmdctx, sysdb, - dctx->domain, cmdctx->id, - nss_cmd_getpwuid_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - } - - /* we made another call, end here */ - if (ret == EOK) return; - } - - DEBUG(2, ("No results for getpwuid call\n")); - - /* set negative cache only if not result of cache check */ - if (!neghit) { - ret = nss_ncache_set_uid(nctx->ncache, false, cmdctx->id); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - } - - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - break; - - case 1: - DEBUG(6, ("Returning info for user [%u]\n", (unsigned)cmdctx->id)); - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - - ret = fill_pwent(cctx->creq->out, - dctx->domain, - nctx, true, - res->msgs, res->count); - if (ret == ENOENT) { - ret = fill_empty(cctx->creq->out); - } - sss_packet_set_error(cctx->creq->out, ret); - - break; - - default: - DEBUG(1, ("getpwnam call returned more than one result !?!\n")); - ret = nss_cmd_send_error(cmdctx, ENOENT); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - } - - sss_cmd_done(cctx, cmdctx); -} - -static void nss_cmd_getpwuid_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sysdb_ctx *sysdb; - int ret; - - if (err_maj) { - DEBUG(2, ("Unable to get information from Data Provider\n" - "Error: %u, %u, %s\n" - "Will try to return what we have in cache\n", - (unsigned int)err_maj, (unsigned int)err_min, err_msg)); - - if (!dctx->res) { - /* return 0 results */ - dctx->res = talloc_zero(dctx, struct ldb_result); - if (!dctx->res) { - ret = ENOMEM; - goto done; - } - } - - nss_cmd_getpwuid_callback(dctx, LDB_SUCCESS, dctx->res); - return; - } - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_getpwuid(cmdctx, sysdb, - dctx->domain, cmdctx->id, - nss_cmd_getpwuid_callback, dctx); - -done: - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } -} - -static int nss_cmd_getpwuid(struct cli_ctx *cctx) -{ - struct nss_cmd_ctx *cmdctx; - struct nss_dom_ctx *dctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - uint8_t *body; - size_t blen; - int ret; - int ncret; - - ret = ENOENT; - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - cmdctx = talloc_zero(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - - dctx = talloc_zero(cmdctx, struct nss_dom_ctx); - if (!dctx) { - ret = ENOMEM; - goto done; - } - dctx->cmdctx = cmdctx; - - /* get uid to query */ - sss_packet_get_body(cctx->creq->in, &body, &blen); - - if (blen != sizeof(uint32_t)) { - ret = EINVAL; - goto done; - } - cmdctx->id = *((uint32_t *)body); - - /* this is a multidomain search */ - cmdctx->check_next = true; - - for (dom = cctx->rctx->domains; dom; dom = dom->next) { - /* verify this user has not yet been negatively cached, - * or has been permanently filtered */ - ncret = nss_ncache_check_uid(nctx->ncache, nctx->neg_timeout, - cmdctx->id); - if (ncret == EEXIST) { - DEBUG(3, ("Uid [%lu] does not exist! (negative cache)\n", - (unsigned long)cmdctx->id)); - continue; - } - - /* check that the uid is valid for this domain */ - if ((dom->id_min && (cmdctx->id < dom->id_min)) || - (dom->id_max && (cmdctx->id > dom->id_max))) { - DEBUG(4, ("Uid [%lu] does not exist in domain [%s]! " - "(id out of range)\n", - (unsigned long)cmdctx->id, dom->name)); - continue; - } - - dctx->domain = dom; - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - - DEBUG(4, ("Requesting info for [%lu@%s]\n", - cmdctx->id, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - ret = EFAULT; - goto done; - } - ret = sysdb_getpwuid(cmdctx, sysdb, - dctx->domain, cmdctx->id, - nss_cmd_getpwuid_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - - break; - } - -done: - if (ret != EOK) { - if (ret == ENOENT) { - /* we do not have any entry to return */ - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret == EOK) { - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - } - } - if (ret != EOK) { - ret = nss_cmd_send_error(cmdctx, ret); - } - if (ret == EOK) { - sss_cmd_done(cctx, cmdctx); - } - return ret; - } - - return EOK; -} - -/* to keep it simple at this stage we are retrieving the - * full enumeration again for each request for each process - * and we also block on setpwent() for the full time needed - * to retrieve the data. And endpwent() frees all the data. - * Next steps are: - * - use an nsssrv wide cache with data already structured - * so that it can be immediately returned (see nscd way) - * - use mutexes so that setpwent() can return immediately - * even if the data is still being fetched - * - make getpwent() wait on the mutex - */ -static int nss_cmd_getpwent_immediate(struct nss_cmd_ctx *cmdctx); - -static void nss_cmd_setpw_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr); - -static void nss_cmd_setpwent_callback(void *ptr, int status, - struct ldb_result *res) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct getent_ctx *pctx; - struct nss_ctx *nctx; - int timeout; - int ret; - - if (status != LDB_SUCCESS) { - ret = nss_cmd_send_error(cmdctx, ENOENT); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - pctx = nctx->pctx; - if (pctx == NULL) { - pctx = talloc_zero(nctx, struct getent_ctx); - if (!pctx) { - ret = nss_cmd_send_error(cmdctx, ENOMEM); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - nctx->pctx = pctx; - } - - pctx->doms = talloc_realloc(pctx, pctx->doms, struct dom_ctx, pctx->num +1); - if (!pctx->doms) { - talloc_free(pctx); - nctx->pctx = NULL; - NSS_CMD_FATAL_ERROR(cctx); - } - - pctx->doms[pctx->num].domain = dctx->domain; - pctx->doms[pctx->num].res = talloc_steal(pctx->doms, res); - pctx->doms[pctx->num].cur = 0; - - pctx->num++; - - /* do not reply until all domain searches are done */ - for (dom = dctx->domain->next; dom; dom = dom->next) { - if (dom->enumerate != 0) break; - } - dctx->domain = dom; - - if (dctx->domain != NULL) { - if (cmdctx->enum_cached) { - dctx->check_provider = false; - } else { - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - } - - if (dctx->check_provider) { - timeout = SSS_CLI_SOCKET_TIMEOUT; - ret = sss_dp_send_acct_req(cctx->rctx, cmdctx, - nss_cmd_setpw_dp_callback, dctx, - timeout, dom->name, true, - SSS_DP_USER, NULL, 0); - } else { - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_enumpwent(dctx, sysdb, - dctx->domain, NULL, - nss_cmd_setpwent_callback, dctx); - } - if (ret != EOK) { - /* FIXME: shutdown ? */ - DEBUG(1, ("Failed to send enumeration request for domain [%s]!\n", - dom->name)); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } - return; - } - - /* set cache mark */ - nctx->last_user_enum = time(NULL); - - if (cmdctx->immediate) { - /* this was a getpwent call w/o setpwent, - * return immediately one result */ - ret = nss_cmd_getpwent_immediate(cmdctx); - if (ret != EOK) NSS_CMD_FATAL_ERROR(cctx); - return; - } - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); -} - -static void nss_cmd_setpw_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sysdb_ctx *sysdb; - int ret; - - if (err_maj) { - DEBUG(2, ("Unable to get information from Data Provider\n" - "Error: %u, %u, %s\n" - "Will try to return what we have in cache\n", - (unsigned int)err_maj, (unsigned int)err_min, err_msg)); - } - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_enumpwent(cmdctx, sysdb, - dctx->domain, NULL, - nss_cmd_setpwent_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } -} - -static int nss_cmd_setpwent_ext(struct cli_ctx *cctx, bool immediate) -{ - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_cmd_ctx *cmdctx; - struct nss_dom_ctx *dctx; - struct nss_ctx *nctx; - time_t now = time(NULL); - int timeout; - uint8_t *body; - size_t blen; - int ret; - - DEBUG(4, ("Requesting info for all users\n")); - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - talloc_free(nctx->pctx); - nctx->pctx = NULL; - - cmdctx = talloc_zero(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - cmdctx->immediate = immediate; - - dctx = talloc_zero(cmdctx, struct nss_dom_ctx); - if (!dctx) { - ret = ENOMEM; - goto done; - } - dctx->cmdctx = cmdctx; - - /* do not query backends if we have a recent enumeration */ - if (nctx->enum_cache_timeout) { - if (nctx->last_user_enum + - nctx->enum_cache_timeout > now) { - cmdctx->enum_cached = true; - } - } - - /* check if enumeration is enabled in any domain */ - for (dom = cctx->rctx->domains; dom; dom = dom->next) { - if (dom->enumerate != 0) break; - } - dctx->domain = dom; - - if (dctx->domain == NULL) { - DEBUG(2, ("Enumeration disabled on all domains!\n")); - ret = ENOENT; - goto done; - } - - if (cmdctx->enum_cached) { - dctx->check_provider = false; - } else { - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - } - - if (dctx->check_provider) { - timeout = SSS_CLI_SOCKET_TIMEOUT; - ret = sss_dp_send_acct_req(cctx->rctx, cmdctx, - nss_cmd_setpw_dp_callback, dctx, - timeout, dom->name, true, - SSS_DP_USER, NULL, 0); - } else { - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - ret = EFAULT; - goto done; - } - ret = sysdb_enumpwent(dctx, sysdb, - dctx->domain, NULL, - nss_cmd_setpwent_callback, dctx); - } - if (ret != EOK) { - /* FIXME: shutdown ? */ - DEBUG(1, ("Failed to send enumeration request for domain [%s]!\n", - dom->name)); - } - -done: - if (ret != EOK) { - if (ret == ENOENT) { - if (cmdctx->immediate) { - /* we do not have any entry to return */ - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret == EOK) { - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - } - } - else { - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - } - } - if (ret != EOK) { - ret = nss_cmd_send_error(cmdctx, ret); - } - if (ret == EOK) { - sss_cmd_done(cctx, cmdctx); - } - return ret; - } - - return EOK; -} - -static int nss_cmd_setpwent(struct cli_ctx *cctx) -{ - return nss_cmd_setpwent_ext(cctx, false); -} - - -static int nss_cmd_retpwent(struct cli_ctx *cctx, int num) -{ - struct nss_ctx *nctx; - struct getent_ctx *pctx; - struct ldb_message **msgs = NULL; - struct dom_ctx *pdom = NULL; - int n = 0; - int ret; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - pctx = nctx->pctx; - -retry: - if (pctx->cur >= pctx->num) goto none; - - pdom = &pctx->doms[pctx->cur]; - - n = pdom->res->count - pdom->cur; - if (n == 0 && (pctx->cur+1 < pctx->num)) { - pctx->cur++; - pdom = &pctx->doms[pctx->cur]; - n = pdom->res->count - pdom->cur; - } - - if (!n) goto none; - - if (n > num) n = num; - - msgs = &(pdom->res->msgs[pdom->cur]); - pdom->cur += n; - - ret = fill_pwent(cctx->creq->out, pdom->domain, nctx, true, msgs, n); - if (ret == ENOENT) goto retry; - return ret; - -none: - return fill_empty(cctx->creq->out); -} - -/* used only if a process calls getpwent() without first calling setpwent() - */ -static int nss_cmd_getpwent_immediate(struct nss_cmd_ctx *cmdctx) -{ - struct cli_ctx *cctx = cmdctx->cctx; - uint8_t *body; - size_t blen; - uint32_t num; - int ret; - - /* get max num of entries to return in one call */ - sss_packet_get_body(cctx->creq->in, &body, &blen); - if (blen != sizeof(uint32_t)) { - return EINVAL; - } - num = *((uint32_t *)body); - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - return ret; - } - - ret = nss_cmd_retpwent(cctx, num); - - sss_packet_set_error(cctx->creq->out, ret); - sss_cmd_done(cctx, cmdctx); - - return EOK; -} - -static int nss_cmd_getpwent(struct cli_ctx *cctx) -{ - struct nss_ctx *nctx; - struct nss_cmd_ctx *cmdctx; - - DEBUG(4, ("Requesting info for all accounts\n")); - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - /* see if we need to trigger an implicit setpwent() */ - if (nctx->pctx == NULL) { - nctx->pctx = talloc_zero(nctx, struct getent_ctx); - if (!nctx->pctx) return ENOMEM; - - return nss_cmd_setpwent_ext(cctx, true); - } - - cmdctx = talloc(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - - return nss_cmd_getpwent_immediate(cmdctx); -} - -static int nss_cmd_endpwent(struct cli_ctx *cctx) -{ - struct nss_ctx *nctx; - int ret; - - DEBUG(4, ("Terminating request info for all accounts\n")); - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - - if (nctx->pctx == NULL) goto done; - - /* free results and reset */ - talloc_free(nctx->pctx); - nctx->pctx = NULL; - -done: - sss_cmd_done(cctx, NULL); - return EOK; -} - -/**************************************************************************** - * GROUP db related functions - ***************************************************************************/ - -#define GID_ROFFSET 0 -#define MNUM_ROFFSET sizeof(uint32_t) -#define STRS_ROFFSET 2*sizeof(uint32_t) - -static int fill_grent(struct sss_packet *packet, - struct sss_domain_info *dom, - struct nss_ctx *nctx, - bool filter_groups, - struct ldb_message **msgs, - int max, int *count) -{ - struct ldb_message *msg; - struct ldb_message_element *el; - uint8_t *body; - size_t blen; - uint32_t gid; - const char *name; - size_t nsize; - size_t delim; - size_t dom_len; - size_t pwlen; - int i = 0; - int j = 0; - int ret, num, memnum; - size_t rzero, rsize; - bool add_domain = dom->fqnames; - const char *domain = dom->name; - const char *namefmt = nctx->rctx->names->fq_fmt; - - if (add_domain) { - delim = 1; - dom_len = strlen(domain); - } else { - delim = 0; - dom_len = 0; - } - - num = 0; - pwlen = strlen(nctx->pwfield) + 1; - - /* first 2 fields (len and reserved), filled up later */ - ret = sss_packet_grow(packet, 2*sizeof(uint32_t)); - if (ret != EOK) { - goto done; - } - sss_packet_get_body(packet, &body, &blen); - rzero = 2*sizeof(uint32_t); - rsize = 0; - - for (i = 0; i < *count; i++) { - msg = msgs[i]; - - /* new group */ - if (!ldb_msg_check_string_attribute(msg, "objectClass", - SYSDB_GROUP_CLASS)) { - DEBUG(1, ("Wrong object (%s) found on stack!\n", - ldb_dn_get_linearized(msg->dn))); - continue; - } - - /* if we reached the max allowed entries, simply return */ - if (num >= max) { - goto done; - } - - /* new result starts at end of previous result */ - rzero += rsize; - rsize = 0; - - /* find group name/gid */ - name = ldb_msg_find_attr_as_string(msg, SYSDB_NAME, NULL); - gid = ldb_msg_find_attr_as_uint64(msg, SYSDB_GIDNUM, 0); - if (!name || !gid) { - DEBUG(1, ("Incomplete group object for %s[%llu]! Skipping\n", - name?name:"<NULL>", (unsigned long long int)gid)); - continue; - } - - if (filter_groups) { - ret = nss_ncache_check_group(nctx->ncache, - nctx->neg_timeout, domain, name); - if (ret == EEXIST) { - DEBUG(4, ("Group [%s@%s] filtered out! (negative cache)\n", - name, domain)); - continue; - } - } - - nsize = strlen(name) + 1; /* includes terminating \0 */ - if (add_domain) nsize += delim + dom_len; - - /* fill in gid and name and set pointer for number of members */ - rsize = STRS_ROFFSET + nsize + pwlen; /* name\0x\0 */ - - ret = sss_packet_grow(packet, rsize); - if (ret != EOK) { - num = 0; - goto done; - } - sss_packet_get_body(packet, &body, &blen); - - /* 0-3: 32bit number gid */ - ((uint32_t *)(&body[rzero+GID_ROFFSET]))[0] = gid; - - /* 4-7: 32bit unsigned number of members */ - ((uint32_t *)(&body[rzero+MNUM_ROFFSET]))[0] = 0; - - /* 8-X: sequence of strings (name, passwd, mem..) */ - if (add_domain) { - ret = snprintf((char *)&body[rzero+STRS_ROFFSET], - nsize, namefmt, name, domain); - if (ret >= nsize) { - /* need more space, got creative with the print format ? */ - int t = ret - nsize + 1; - ret = sss_packet_grow(packet, t); - if (ret != EOK) { - num = 0; - goto done; - } - sss_packet_get_body(packet, &body, &blen); - rsize += t; - delim += t; - nsize += t; - - /* retry */ - ret = snprintf((char *)&body[rzero+STRS_ROFFSET], - nsize, namefmt, name, domain); - } - - if (ret != nsize-1) { - DEBUG(1, ("Failed to generate a fully qualified name for" - " group [%s] in [%s]! Skipping\n", name, domain)); - /* reclaim space */ - ret = sss_packet_shrink(packet, rsize); - if (ret != EOK) { - num = 0; - goto done; - } - rsize = 0; - continue; - } - } else { - memcpy(&body[rzero+STRS_ROFFSET], name, nsize); - } - - /* group passwd field */ - memcpy(&body[rzero + rsize -pwlen], nctx->pwfield, pwlen); - - el = ldb_msg_find_element(msg, SYSDB_MEMBERUID); - if (el) { - memnum = 0; - - for (j = 0; j < el->num_values; j++) { - name = (const char *)el->values[j].data; - - if (nctx->filter_users_in_groups) { - ret = nss_ncache_check_user(nctx->ncache, - nctx->neg_timeout, - domain, name); - if (ret == EEXIST) { - DEBUG(6, ("Group [%s] member [%s@%s] filtered out!" - " (negative cache)\n", - (char *)&body[rzero+STRS_ROFFSET], - name, domain)); - continue; - } - } - - nsize = strlen(name) + 1; /* includes terminating \0 */ - if (add_domain) nsize += delim + dom_len; - - ret = sss_packet_grow(packet, nsize); - if (ret != EOK) { - num = 0; - goto done; - } - sss_packet_get_body(packet, &body, &blen); - - if (add_domain) { - ret = snprintf((char *)&body[rzero + rsize], - nsize, namefmt, name, domain); - if (ret >= nsize) { - /* need more space, - * got creative with the print format ? */ - int t = ret - nsize + 1; - ret = sss_packet_grow(packet, t); - if (ret != EOK) { - num = 0; - goto done; - } - sss_packet_get_body(packet, &body, &blen); - delim += t; - nsize += t; - - /* retry */ - ret = snprintf((char *)&body[rzero + rsize], - nsize, namefmt, name, domain); - } - - if (ret != nsize-1) { - DEBUG(1, ("Failed to generate a fully qualified name" - " for member [%s@%s] of group [%s]!" - " Skipping\n", name, domain, - (char *)&body[rzero+STRS_ROFFSET])); - /* reclaim space */ - ret = sss_packet_shrink(packet, nsize); - if (ret != EOK) { - num = 0; - goto done; - } - continue; - } - - } else { - memcpy(&body[rzero + rsize], name, nsize); - } - - rsize += nsize; - - memnum++; - } - - if (memnum) { - /* set num of members */ - ((uint32_t *)(&body[rzero+MNUM_ROFFSET]))[0] = memnum; - } - } - - num++; - continue; - } - -done: - *count = i; - - if (num == 0) { - /* if num is 0 most probably something went wrong, - * reset packet and return ENOENT */ - ret = sss_packet_set_size(packet, 0); - if (ret != EOK) return ret; - return ENOENT; - } - - ((uint32_t *)body)[0] = num; /* num results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - - return EOK; -} - -static void nss_cmd_getgrnam_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr); - -static void nss_cmd_getgrnam_callback(void *ptr, int status, - struct ldb_result *res) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - uint8_t *body; - size_t blen; - bool neghit = false; - int ncret; - int i, ret; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - if (status != LDB_SUCCESS) { - ret = nss_cmd_send_error(cmdctx, status); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - - if (dctx->check_provider) { - ret = check_cache(dctx, nctx, res, - SSS_DP_GROUP, cmdctx->name, 0, - nss_cmd_getgrnam_dp_callback); - if (ret != EOK) { - /* Anything but EOK means we should reenter the mainloop - * because we may be refreshing the cache - */ - return; - } - } - - switch (res->count) { - case 0: - if (cmdctx->check_next) { - - ret = EOK; - - /* skip domains that require FQnames or have negative caches */ - for (dom = dctx->domain->next; dom; dom = dom->next) { - - if (dom->fqnames) continue; - - ncret = nss_ncache_check_group(nctx->ncache, - nctx->neg_timeout, - dom->name, cmdctx->name); - if (ncret == ENOENT) break; - - neghit = true; - } - /* reset neghit if we still have a domain to check */ - if (dom) neghit = false; - - if (neghit) { - DEBUG(2, ("Group [%s] does not exist! (negative cache)\n", - cmdctx->name)); - ret = ENOENT; - } - if (dom == NULL) { - DEBUG(2, ("No matching domain found for [%s], fail!\n", - cmdctx->name)); - ret = ENOENT; - } - - if (ret == EOK) { - dctx->domain = dom; - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - if (dctx->res) talloc_free(res); - dctx->res = NULL; - - DEBUG(4, ("Requesting info for [%s@%s]\n", - cmdctx->name, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_getgrnam(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getgrnam_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - } - - /* we made another call, end here */ - if (ret == EOK) return; - } - - - DEBUG(2, ("No results for getgrnam call\n")); - - /* set negative cache only if not result of cache check */ - if (!neghit) { - ret = nss_ncache_set_group(nctx->ncache, false, - dctx->domain->name, cmdctx->name); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - } - - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - break; - - default: - - DEBUG(6, ("Returning info for group [%s]\n", cmdctx->name)); - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - i = res->count; - ret = fill_grent(cctx->creq->out, - dctx->domain, - nctx, false, - res->msgs, 1, &i); - if (ret == ENOENT) { - ret = fill_empty(cctx->creq->out); - } - sss_packet_set_error(cctx->creq->out, ret); - } - - sss_cmd_done(cctx, cmdctx); -} - -static void nss_cmd_getgrnam_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sysdb_ctx *sysdb; - int ret; - - if (err_maj) { - DEBUG(2, ("Unable to get information from Data Provider\n" - "Error: %u, %u, %s\n" - "Will try to return what we have in cache\n", - (unsigned int)err_maj, (unsigned int)err_min, err_msg)); - - if (!dctx->res) { - /* return 0 results */ - dctx->res = talloc_zero(dctx, struct ldb_result); - if (!dctx->res) { - ret = ENOMEM; - goto done; - } - } - - nss_cmd_getgrnam_callback(dctx, LDB_SUCCESS, dctx->res); - return; - } - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_getgrnam(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getgrnam_callback, dctx); - -done: - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache! (%d [%s])\n", - ret, strerror(ret))); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } -} - -static int nss_cmd_getgrnam(struct cli_ctx *cctx) -{ - struct nss_cmd_ctx *cmdctx; - struct nss_dom_ctx *dctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - const char *rawname; - char *domname; - uint8_t *body; - size_t blen; - int ret; - int ncret; - bool neghit = false; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - cmdctx = talloc_zero(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - - dctx = talloc_zero(cmdctx, struct nss_dom_ctx); - if (!dctx) { - ret = ENOMEM; - goto done; - } - dctx->cmdctx = cmdctx; - - /* get user name to query */ - sss_packet_get_body(cctx->creq->in, &body, &blen); - - /* if not terminated fail */ - if (body[blen -1] != '\0') { - ret = EINVAL; - goto done; - } - rawname = (const char *)body; - - domname = NULL; - ret = sss_parse_name(cmdctx, cctx->rctx->names, rawname, - &domname, &cmdctx->name); - if (ret != EOK) { - DEBUG(2, ("Invalid name received [%s]\n", rawname)); - ret = ENOENT; - goto done; - } - - DEBUG(4, ("Requesting info for [%s] from [%s]\n", - cmdctx->name, domname?domname:"<ALL>")); - - if (domname) { - dctx->domain = nss_get_dom(cctx->rctx->domains, domname); - if (!dctx->domain) { - ret = ENOENT; - goto done; - } - - /* verify this user has not yet been negatively cached, - * or has been permanently filtered */ - ncret = nss_ncache_check_group(nctx->ncache, nctx->neg_timeout, - dctx->domain->name, cmdctx->name); - if (ncret == EEXIST) { - neghit = true; - } - } - else { - /* skip domains that require FQnames or have negative caches */ - for (dom = cctx->rctx->domains; dom; dom = dom->next) { - - if (dom->fqnames) continue; - - /* verify this user has not yet been negatively cached, - * or has been permanently filtered */ - ncret = nss_ncache_check_group(nctx->ncache, nctx->neg_timeout, - dom->name, cmdctx->name); - if (ncret == ENOENT) break; - - neghit = true; - } - /* reset neghit if we still have a domain to check */ - if (dom) neghit = false; - - dctx->domain = dom; - } - if (neghit) { - DEBUG(2, ("Group [%s] does not exist! (negative cache)\n", rawname)); - ret = ENOENT; - goto done; - } - if (dctx->domain == NULL) { - DEBUG(2, ("No matching domain found for [%s], fail!\n", rawname)); - ret = ENOENT; - goto done; - } - - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - - if (!domname) { - /* this is a multidomain search */ - cmdctx->check_next = true; - } - - DEBUG(4, ("Requesting info for [%s@%s]\n", - cmdctx->name, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - ret = EFAULT; - goto done; - } - ret = sysdb_getgrnam(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getgrnam_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - -done: - if (ret != EOK) { - if (ret == ENOENT) { - /* we do not have any entry to return */ - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret == EOK) { - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - } - } - if (ret != EOK) { - ret = nss_cmd_send_error(cmdctx, ret); - } - if (ret == EOK) { - sss_cmd_done(cctx, cmdctx); - } - return ret; - } - - return EOK; -} - -static void nss_cmd_getgrgid_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr); - -static void nss_cmd_getgrgid_callback(void *ptr, int status, - struct ldb_result *res) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - uint8_t *body; - size_t blen; - bool neghit = false; - int i, ret; - int ncret; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - if (status != LDB_SUCCESS) { - ret = nss_cmd_send_error(cmdctx, status); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - - if (dctx->check_provider) { - ret = check_cache(dctx, nctx, res, - SSS_DP_GROUP, NULL, cmdctx->id, - nss_cmd_getgrgid_dp_callback); - if (ret != EOK) { - /* Anything but EOK means we should reenter the mainloop - * because we may be refreshing the cache - */ - return; - } - } - - switch (res->count) { - case 0: - if (cmdctx->check_next) { - - ret = EOK; - - dom = dctx->domain->next; - - ncret = nss_ncache_check_gid(nctx->ncache, nctx->neg_timeout, - cmdctx->id); - if (ncret == EEXIST) { - DEBUG(3, ("Gid [%lu] does not exist! (negative cache)\n", - (unsigned long)cmdctx->id)); - ret = ENOENT; - } - if (dom == NULL) { - DEBUG(0, ("No matching domain found for [%lu], fail!\n", - (unsigned long)cmdctx->id)); - ret = ENOENT; - } - - if (ret == EOK) { - dctx->domain = dom; - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - if (dctx->res) talloc_free(res); - dctx->res = NULL; - - DEBUG(4, ("Requesting info for [%s@%s]\n", - cmdctx->name, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_getgrgid(cmdctx, sysdb, - dctx->domain, cmdctx->id, - nss_cmd_getgrgid_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - } - - /* we made another call, end here */ - if (ret == EOK) return; - } - - DEBUG(2, ("No results for getgrgid call\n")); - - /* set negative cache only if not result of cache check */ - if (!neghit) { - ret = nss_ncache_set_gid(nctx->ncache, false, cmdctx->id); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - } - - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - break; - - default: - - DEBUG(6, ("Returning info for group [%u]\n", (unsigned)cmdctx->id)); - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - i = res->count; - ret = fill_grent(cctx->creq->out, - dctx->domain, - nctx, true, - res->msgs, 1, &i); - if (ret == ENOENT) { - ret = fill_empty(cctx->creq->out); - } - sss_packet_set_error(cctx->creq->out, ret); - } - - sss_cmd_done(cctx, cmdctx); -} - -static void nss_cmd_getgrgid_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sysdb_ctx *sysdb; - int ret; - - if (err_maj) { - DEBUG(2, ("Unable to get information from Data Provider\n" - "Error: %u, %u, %s\n" - "Will try to return what we have in cache\n", - (unsigned int)err_maj, (unsigned int)err_min, err_msg)); - - if (!dctx->res) { - /* return 0 results */ - dctx->res = talloc_zero(dctx, struct ldb_result); - if (!dctx->res) { - ret = ENOMEM; - goto done; - } - } - - nss_cmd_getgrgid_callback(dctx, LDB_SUCCESS, dctx->res); - return; - } - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_getgrgid(cmdctx, sysdb, - dctx->domain, cmdctx->id, - nss_cmd_getgrgid_callback, dctx); - -done: - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } -} - -static int nss_cmd_getgrgid(struct cli_ctx *cctx) -{ - struct nss_cmd_ctx *cmdctx; - struct nss_dom_ctx *dctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - uint8_t *body; - size_t blen; - int ret; - int ncret; - - ret = ENOENT; - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - cmdctx = talloc_zero(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - - dctx = talloc_zero(cmdctx, struct nss_dom_ctx); - if (!dctx) { - ret = ENOMEM; - goto done; - } - dctx->cmdctx = cmdctx; - - /* get uid to query */ - sss_packet_get_body(cctx->creq->in, &body, &blen); - - if (blen != sizeof(uint32_t)) { - ret = EINVAL; - goto done; - } - cmdctx->id = *((uint32_t *)body); - - /* this is a multidomain search */ - cmdctx->check_next = true; - - for (dom = cctx->rctx->domains; dom; dom = dom->next) { - /* verify this user has not yet been negatively cached, - * or has been permanently filtered */ - ncret = nss_ncache_check_gid(nctx->ncache, nctx->neg_timeout, - cmdctx->id); - if (ncret == EEXIST) { - DEBUG(3, ("Gid [%lu] does not exist! (negative cache)\n", - (unsigned long)cmdctx->id)); - continue; - } - - /* check that the uid is valid for this domain */ - if ((dom->id_min && (cmdctx->id < dom->id_min)) || - (dom->id_max && (cmdctx->id > dom->id_max))) { - DEBUG(4, ("Gid [%lu] does not exist in domain [%s]! " - "(id out of range)\n", - (unsigned long)cmdctx->id, dom->name)); - continue; - } - - dctx->domain = dom; - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - - DEBUG(4, ("Requesting info for [%lu@%s]\n", - cmdctx->id, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - ret = EFAULT; - goto done; - } - ret = sysdb_getgrgid(cmdctx, sysdb, - dctx->domain, cmdctx->id, - nss_cmd_getgrgid_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - - break; - } - -done: - if (ret != EOK) { - if (ret == ENOENT) { - /* we do not have any entry to return */ - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret == EOK) { - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - } - } - if (ret != EOK) { - ret = nss_cmd_send_error(cmdctx, ret); - } - if (ret == EOK) { - sss_cmd_done(cctx, cmdctx); - } - return ret; - } - - return EOK; -} - -/* to keep it simple at this stage we are retrieving the - * full enumeration again for each request for each process - * and we also block on setgrent() for the full time needed - * to retrieve the data. And endgrent() frees all the data. - * Next steps are: - * - use and nsssrv wide cache with data already structured - * so that it can be immediately returned (see nscd way) - * - use mutexes so that setgrent() can return immediately - * even if the data is still being fetched - * - make getgrent() wait on the mutex - */ -static int nss_cmd_getgrent_immediate(struct nss_cmd_ctx *cmdctx); - -static void nss_cmd_setgr_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr); - -static void nss_cmd_setgrent_callback(void *ptr, int status, - struct ldb_result *res) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct getent_ctx *gctx; - struct nss_ctx *nctx; - int timeout; - int ret; - - if (status != LDB_SUCCESS) { - ret = nss_cmd_send_error(cmdctx, ENOENT); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - gctx = nctx->gctx; - if (gctx == NULL) { - gctx = talloc_zero(nctx, struct getent_ctx); - if (!gctx) { - ret = nss_cmd_send_error(cmdctx, ENOMEM); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - nctx->gctx = gctx; - } - - gctx->doms = talloc_realloc(gctx, gctx->doms, struct dom_ctx, gctx->num +1); - if (!gctx->doms) NSS_CMD_FATAL_ERROR(cctx); - - gctx->doms[gctx->num].domain = dctx->domain; - gctx->doms[gctx->num].res = talloc_steal(gctx->doms, res); - gctx->doms[gctx->num].cur = 0; - - gctx->num++; - - /* do not reply until all domain searches are done */ - for (dom = dctx->domain->next; dom; dom = dom->next) { - if (dom->enumerate != 0) break; - } - dctx->domain = dom; - - if (dctx->domain != NULL) { - if (cmdctx->enum_cached) { - dctx->check_provider = false; - } else { - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - } - - if (dctx->check_provider) { - timeout = SSS_CLI_SOCKET_TIMEOUT; - ret = sss_dp_send_acct_req(cctx->rctx, cmdctx, - nss_cmd_setgr_dp_callback, dctx, - timeout, dom->name, true, - SSS_DP_GROUP, NULL, 0); - } else { - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_enumgrent(dctx, sysdb, - dctx->domain, - nss_cmd_setgrent_callback, dctx); - } - if (ret != EOK) { - /* FIXME: shutdown ? */ - DEBUG(1, ("Failed to send enumeration request for domain [%s]!\n", - dom->name)); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } - return; - } - - /* set cache mark */ - nctx->last_group_enum = time(NULL); - - if (cmdctx->immediate) { - /* this was a getgrent call w/o setgrent, - * return immediately one result */ - ret = nss_cmd_getgrent_immediate(cmdctx); - if (ret != EOK) NSS_CMD_FATAL_ERROR(cctx); - return; - } - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); -} - -static void nss_cmd_setgr_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sysdb_ctx *sysdb; - int ret; - - if (err_maj) { - DEBUG(2, ("Unable to get information from Data Provider\n" - "Error: %u, %u, %s\n" - "Will try to return what we have in cache\n", - (unsigned int)err_maj, (unsigned int)err_min, err_msg)); - } - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_enumgrent(dctx, sysdb, - dctx->domain, - nss_cmd_setgrent_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } -} - -static int nss_cmd_setgrent_ext(struct cli_ctx *cctx, bool immediate) -{ - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_cmd_ctx *cmdctx; - struct nss_dom_ctx *dctx; - struct nss_ctx *nctx; - time_t now = time(NULL); - int timeout; - uint8_t *body; - size_t blen; - int ret; - - DEBUG(4, ("Requesting info for all groups\n")); - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - talloc_free(nctx->gctx); - nctx->gctx = NULL; - - cmdctx = talloc_zero(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - cmdctx->immediate = immediate; - - dctx = talloc_zero(cmdctx, struct nss_dom_ctx); - if (!dctx) { - ret = ENOMEM; - goto done; - } - dctx->cmdctx = cmdctx; - - /* do not query backends if we have a recent enumeration */ - if (nctx->enum_cache_timeout) { - if (nctx->last_group_enum + - nctx->enum_cache_timeout > now) { - cmdctx->enum_cached = true; - } - } - - /* check if enumeration is enabled in any domain */ - for (dom = cctx->rctx->domains; dom; dom = dom->next) { - if (dom->enumerate != 0) break; - } - dctx->domain = dom; - - if (dctx->domain == NULL) { - DEBUG(2, ("Enumeration disabled on all domains!\n")); - ret = ENOENT; - goto done; - } - - if (cmdctx->enum_cached) { - dctx->check_provider = false; - } else { - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - } - - if (dctx->check_provider) { - timeout = SSS_CLI_SOCKET_TIMEOUT; - ret = sss_dp_send_acct_req(cctx->rctx, cmdctx, - nss_cmd_setgr_dp_callback, dctx, - timeout, dom->name, true, - SSS_DP_GROUP, NULL, 0); - } else { - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - ret = EFAULT; - goto done; - } - ret = sysdb_enumgrent(dctx, sysdb, - dctx->domain, - nss_cmd_setgrent_callback, dctx); - } - if (ret != EOK) { - /* FIXME: shutdown ? */ - DEBUG(1, ("Failed to send enumeration request for domain [%s]!\n", - dom->name)); - } - -done: - if (ret != EOK) { - if (ret == ENOENT) { - if (cmdctx->immediate) { - /* we do not have any entry to return */ - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret == EOK) { - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - } - } - else { - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - } - } - if (ret != EOK) { - ret = nss_cmd_send_error(cmdctx, ret); - } - if (ret == EOK) { - sss_cmd_done(cctx, cmdctx); - } - return ret; - } - - return EOK; -} - -static int nss_cmd_setgrent(struct cli_ctx *cctx) -{ - return nss_cmd_setgrent_ext(cctx, false); -} - -static int nss_cmd_retgrent(struct cli_ctx *cctx, int num) -{ - struct nss_ctx *nctx; - struct getent_ctx *gctx; - struct ldb_message **msgs = NULL; - struct dom_ctx *gdom = NULL; - int n = 0; - int ret; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - gctx = nctx->gctx; - - do { - if (gctx->cur >= gctx->num) goto none; - - gdom = &gctx->doms[gctx->cur]; - - n = gdom->res->count - gdom->cur; - if (n == 0 && (gctx->cur+1 < gctx->num)) { - gctx->cur++; - gdom = &gctx->doms[gctx->cur]; - n = gdom->res->count - gdom->cur; - } - - if (!n) goto none; - - msgs = &(gdom->res->msgs[gdom->cur]); - - ret = fill_grent(cctx->creq->out, gdom->domain, nctx, true, msgs, num, &n); - - gdom->cur += n; - - } while(ret == ENOENT); - - return ret; - -none: - return fill_empty(cctx->creq->out); -} - -/* used only if a process calls getpwent() without first calling setpwent() - */ -static int nss_cmd_getgrent_immediate(struct nss_cmd_ctx *cmdctx) -{ - struct cli_ctx *cctx = cmdctx->cctx; - uint8_t *body; - size_t blen; - uint32_t num; - int ret; - - /* get max num of entries to return in one call */ - sss_packet_get_body(cctx->creq->in, &body, &blen); - if (blen != sizeof(uint32_t)) { - return EINVAL; - } - num = *((uint32_t *)body); - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - return ret; - } - - ret = nss_cmd_retgrent(cctx, num); - - sss_packet_set_error(cctx->creq->out, ret); - sss_cmd_done(cctx, cmdctx); - - return EOK; -} - -static int nss_cmd_getgrent(struct cli_ctx *cctx) -{ - struct nss_ctx *nctx; - struct nss_cmd_ctx *cmdctx; - - DEBUG(4, ("Requesting info for all groups\n")); - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - /* see if we need to trigger an implicit setpwent() */ - if (nctx->gctx == NULL) { - nctx->gctx = talloc_zero(nctx, struct getent_ctx); - if (!nctx->gctx) return ENOMEM; - - return nss_cmd_setgrent_ext(cctx, true); - } - - cmdctx = talloc(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - - return nss_cmd_getgrent_immediate(cmdctx); -} - -static int nss_cmd_endgrent(struct cli_ctx *cctx) -{ - struct nss_ctx *nctx; - int ret; - - DEBUG(4, ("Terminating request info for all groups\n")); - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - /* create response packet */ - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - - if (nctx->gctx == NULL) goto done; - - /* free results and reset */ - talloc_free(nctx->gctx); - nctx->gctx = NULL; - -done: - sss_cmd_done(cctx, NULL); - return EOK; -} - -static int fill_initgr(struct sss_packet *packet, struct ldb_result *res) -{ - uint8_t *body; - size_t blen; - gid_t gid; - int ret, i, num; - - if (res->count == 0) { - return ENOENT; - } - - /* one less, the first one is the user entry */ - num = res->count -1; - - ret = sss_packet_grow(packet, (2 + res->count) * sizeof(uint32_t)); - if (ret != EOK) { - return ret; - } - sss_packet_get_body(packet, &body, &blen); - - /* skip first entry, it's the user entry */ - for (i = 0; i < num; i++) { - gid = ldb_msg_find_attr_as_uint64(res->msgs[i + 1], SYSDB_GIDNUM, 0); - if (!gid) { - DEBUG(1, ("Incomplete group object for initgroups! Aborting\n")); - return EFAULT; - } - ((uint32_t *)body)[2 + i] = gid; - } - - ((uint32_t *)body)[0] = num; /* num results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - - return EOK; -} - -static void nss_cmd_getinitgr_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr); - -static void nss_cmd_getinitgr_callback(void *ptr, int status, - struct ldb_result *res) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - uint8_t *body; - size_t blen; - bool neghit = false; - int ncret; - int ret; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - if (status != LDB_SUCCESS) { - ret = nss_cmd_send_error(cmdctx, status); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - return; - } - - if (dctx->check_provider) { - ret = check_cache(dctx, nctx, res, - SSS_DP_INITGROUPS, cmdctx->name, 0, - nss_cmd_getinitgr_dp_callback); - if (ret != EOK) { - /* Anything but EOK means we should reenter the mainloop - * because we may be refreshing the cache - */ - return; - } - } - - switch (res->count) { - case 0: - if (cmdctx->check_next) { - - ret = EOK; - - /* skip domains that require FQnames or have negative caches */ - for (dom = dctx->domain->next; dom; dom = dom->next) { - - if (dom->fqnames) continue; - - ncret = nss_ncache_check_user(nctx->ncache, - nctx->neg_timeout, - dom->name, cmdctx->name); - if (ncret == ENOENT) break; - - neghit = true; - } - /* reset neghit if we still have a domain to check */ - if (dom) neghit = false; - - if (neghit) { - DEBUG(2, ("User [%s] does not exist! (negative cache)\n", - cmdctx->name)); - ret = ENOENT; - } - if (dom == NULL) { - DEBUG(2, ("No matching domain found for [%s], fail!\n", - cmdctx->name)); - ret = ENOENT; - } - - if (ret == EOK) { - dctx->domain = dom; - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - if (dctx->res) talloc_free(res); - dctx->res = NULL; - - DEBUG(4, ("Requesting info for [%s@%s]\n", - cmdctx->name, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_initgroups(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getinitgr_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - } - - /* we made another call, end here */ - if (ret == EOK) return; - } - - DEBUG(2, ("No results for initgroups call\n")); - - /* set negative cache only if not result of cache check */ - if (!neghit) { - ret = nss_ncache_set_user(nctx->ncache, false, - dctx->domain->name, cmdctx->name); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - } - - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - break; - - default: - - DEBUG(6, ("Returning initgr for user [%s]\n", cmdctx->name)); - - ret = sss_packet_new(cctx->creq, 0, - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - ret = fill_initgr(cctx->creq->out, res); - if (ret == ENOENT) { - ret = fill_empty(cctx->creq->out); - } - sss_packet_set_error(cctx->creq->out, ret); - } - - sss_cmd_done(cctx, cmdctx); -} - -static void nss_cmd_getinitgr_dp_callback(uint16_t err_maj, uint32_t err_min, - const char *err_msg, void *ptr) -{ - struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx); - struct nss_cmd_ctx *cmdctx = dctx->cmdctx; - struct cli_ctx *cctx = cmdctx->cctx; - struct sysdb_ctx *sysdb; - int ret; - - if (err_maj) { - DEBUG(2, ("Unable to get information from Data Provider\n" - "Error: %u, %u, %s\n" - "Will try to return what we have in cache\n", - (unsigned int)err_maj, (unsigned int)err_min, err_msg)); - - if (!dctx->res) { - /* return 0 results */ - dctx->res = talloc_zero(dctx, struct ldb_result); - if (!dctx->res) { - ret = ENOMEM; - goto done; - } - } - - nss_cmd_getinitgr_callback(dctx, LDB_SUCCESS, dctx->res); - return; - } - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - NSS_CMD_FATAL_ERROR(cctx); - } - ret = sysdb_initgroups(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getinitgr_callback, dctx); - -done: - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - - ret = nss_cmd_send_error(cmdctx, ret); - if (ret != EOK) { - NSS_CMD_FATAL_ERROR(cctx); - } - sss_cmd_done(cctx, cmdctx); - } -} - -/* for now, if we are online, try to always query the backend */ -static int nss_cmd_initgroups(struct cli_ctx *cctx) -{ - struct nss_cmd_ctx *cmdctx; - struct nss_dom_ctx *dctx; - struct sss_domain_info *dom; - struct sysdb_ctx *sysdb; - struct nss_ctx *nctx; - const char *rawname; - char *domname; - uint8_t *body; - size_t blen; - int ret; - int ncret; - bool neghit = false; - - nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx); - - cmdctx = talloc_zero(cctx, struct nss_cmd_ctx); - if (!cmdctx) { - return ENOMEM; - } - cmdctx->cctx = cctx; - - dctx = talloc_zero(cmdctx, struct nss_dom_ctx); - if (!dctx) { - ret = ENOMEM; - goto done; - } - dctx->cmdctx = cmdctx; - - /* get user name to query */ - sss_packet_get_body(cctx->creq->in, &body, &blen); - - /* if not terminated fail */ - if (body[blen -1] != '\0') { - ret = EINVAL; - goto done; - } - rawname = (const char *)body; - - domname = NULL; - ret = sss_parse_name(cmdctx, cctx->rctx->names, rawname, - &domname, &cmdctx->name); - if (ret != EOK) { - DEBUG(2, ("Invalid name received [%s]\n", rawname)); - ret = ENOENT; - goto done; - } - - DEBUG(4, ("Requesting info for [%s] from [%s]\n", - cmdctx->name, domname ? : "<ALL>")); - - if (domname) { - dctx->domain = nss_get_dom(cctx->rctx->domains, domname); - if (!dctx->domain) { - ret = ENOENT; - goto done; - } - - /* verify this user has not yet been negatively cached, - * or has been permanently filtered */ - ncret = nss_ncache_check_user(nctx->ncache, nctx->neg_timeout, - domname, cmdctx->name); - if (ncret == EEXIST) { - neghit = true; - } - } - else { - /* skip domains that require FQnames or have negative caches */ - for (dom = cctx->rctx->domains; dom; dom = dom->next) { - - if (dom->fqnames) continue; - - /* verify this user has not yet been negatively cached, - * or has been permanently filtered */ - ncret = nss_ncache_check_user(nctx->ncache, nctx->neg_timeout, - dom->name, cmdctx->name); - if (ncret == ENOENT) break; - - neghit = true; - } - /* reset neghit if we still have a domain to check */ - if (dom) neghit = false; - - dctx->domain = dom; - } - if (neghit) { - DEBUG(2, ("User [%s] does not exist! (negative cache)\n", rawname)); - ret = ENOENT; - goto done; - } - if (dctx->domain == NULL) { - DEBUG(2, ("No matching domain found for [%s], fail!\n", rawname)); - ret = ENOENT; - goto done; - } - - dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider); - - if (!domname) { - /* this is a multidomain search */ - cmdctx->check_next = true; - } - - DEBUG(4, ("Requesting info for [%s@%s]\n", - cmdctx->name, dctx->domain->name)); - - ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, - dctx->domain, &sysdb); - if (ret != EOK) { - DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n")); - ret = EFAULT; - goto done; - } - ret = sysdb_initgroups(cmdctx, sysdb, - dctx->domain, cmdctx->name, - nss_cmd_getinitgr_callback, dctx); - if (ret != EOK) { - DEBUG(1, ("Failed to make request to our cache!\n")); - } - -done: - if (ret != EOK) { - if (ret == ENOENT) { - /* we do not have any entry to return */ - ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), - sss_packet_get_cmd(cctx->creq->in), - &cctx->creq->out); - if (ret == EOK) { - sss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = 0; /* 0 results */ - ((uint32_t *)body)[1] = 0; /* reserved */ - } - } - if (ret != EOK) { - ret = nss_cmd_send_error(cmdctx, ret); - } - if (ret == EOK) { - sss_cmd_done(cctx, cmdctx); - } - return ret; - } - - return EOK; -} - -struct cli_protocol_version *register_cli_protocol_version(void) -{ - static struct cli_protocol_version nss_cli_protocol_version[] = { - {1, "2008-09-05", "initial version, \\0 terminated strings"}, - {0, NULL, NULL} - }; - - return nss_cli_protocol_version; -} - -static struct sss_cmd_table nss_cmds[] = { - {SSS_GET_VERSION, sss_cmd_get_version}, - {SSS_NSS_GETPWNAM, nss_cmd_getpwnam}, - {SSS_NSS_GETPWUID, nss_cmd_getpwuid}, - {SSS_NSS_SETPWENT, nss_cmd_setpwent}, - {SSS_NSS_GETPWENT, nss_cmd_getpwent}, - {SSS_NSS_ENDPWENT, nss_cmd_endpwent}, - {SSS_NSS_GETGRNAM, nss_cmd_getgrnam}, - {SSS_NSS_GETGRGID, nss_cmd_getgrgid}, - {SSS_NSS_SETGRENT, nss_cmd_setgrent}, - {SSS_NSS_GETGRENT, nss_cmd_getgrent}, - {SSS_NSS_ENDGRENT, nss_cmd_endgrent}, - {SSS_NSS_INITGR, nss_cmd_initgroups}, - {SSS_CLI_NULL, NULL} -}; - -struct sss_cmd_table *get_nss_cmds(void) { - return nss_cmds; -} - -int nss_cmd_execute(struct cli_ctx *cctx) -{ - enum sss_cli_command cmd; - int i; - - cmd = sss_packet_get_cmd(cctx->creq->in); - - for (i = 0; nss_cmds[i].cmd != SSS_CLI_NULL; i++) { - if (cmd == nss_cmds[i].cmd) { - return nss_cmds[i].fn(cctx); - } - } - - return EINVAL; -} - diff --git a/server/responder/nss/nsssrv_nc.c b/server/responder/nss/nsssrv_nc.c deleted file mode 100644 index 1fa7d612..00000000 --- a/server/responder/nss/nsssrv_nc.c +++ /dev/null @@ -1,321 +0,0 @@ -/* - SSSD - - NSS Responder - - 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 "util/util.h" -#include <fcntl.h> -#include <time.h> -#include "tdb.h" - -#define NC_ENTRY_PREFIX "NCE/" -#define NC_USER_PREFIX NC_ENTRY_PREFIX"USER" -#define NC_GROUP_PREFIX NC_ENTRY_PREFIX"GROUP" -#define NC_UID_PREFIX NC_ENTRY_PREFIX"UID" -#define NC_GID_PREFIX NC_ENTRY_PREFIX"GID" - -struct nss_nc_ctx { - struct tdb_context *tdb; -}; - -static int string_to_tdb_data(char *str, TDB_DATA *ret) -{ - if (!str || !ret) return EINVAL; - - ret->dptr = (uint8_t *)str; - ret->dsize = strlen(str)+1; - - return EOK; -} - -int nss_ncache_init(TALLOC_CTX *memctx, struct nss_nc_ctx **_ctx) -{ - struct nss_nc_ctx *ctx; - - ctx = talloc_zero(memctx, struct nss_nc_ctx); - if (!ctx) return ENOMEM; - - errno = 0; - /* open a memory only tdb with default hash size */ - ctx->tdb = tdb_open("memcache", 0, TDB_INTERNAL, O_RDWR|O_CREAT, 0); - if (!ctx->tdb) return errno; - - *_ctx = ctx; - return EOK; -}; - -static int nss_ncache_check_str(struct nss_nc_ctx *ctx, char *str, int ttl) -{ - TDB_DATA key; - TDB_DATA data; - unsigned long long int timestamp; - bool expired = false; - char *ep; - int ret; - - ret = string_to_tdb_data(str, &key); - if (ret != EOK) goto done; - - data = tdb_fetch(ctx->tdb, key); - - if (!data.dptr) { - ret = ENOENT; - goto done; - } - - if (ttl == -1) { - /* a negative ttl means: never expires */ - ret = EEXIST; - goto done; - } - - errno = 0; - timestamp = strtoull((const char *)data.dptr, &ep, 0); - if (errno != 0 || *ep != '\0') { - /* Malformed entry, remove it and return no entry */ - expired = true; - goto done; - } - - if (timestamp == 0) { - /* a 0 timestamp means this is a permanent entry */ - ret = EEXIST; - goto done; - } - - if (timestamp + ttl > time(NULL)) { - /* still valid */ - ret = EEXIST; - goto done; - } - - expired = true; - -done: - if (expired) { - /* expired, remove and return no entry */ - tdb_delete(ctx->tdb, key); - ret = ENOENT; - } - - return ret; -} - -static int nss_ncache_set_str(struct nss_nc_ctx *ctx, - char *str, bool permanent) -{ - TDB_DATA key; - TDB_DATA data; - char *timest; - int ret; - - ret = string_to_tdb_data(str, &key); - if (ret != EOK) return ret; - - if (permanent) { - timest = talloc_strdup(ctx, "0"); - } else { - timest = talloc_asprintf(ctx, "%llu", - (unsigned long long int)time(NULL)); - } - if (!timest) return ENOMEM; - - ret = string_to_tdb_data(timest, &data); - if (ret != EOK) goto done; - - ret = tdb_store(ctx->tdb, key, data, TDB_REPLACE); - if (ret != 0) { - DEBUG(1, ("Negative cache failed to set entry: [%s]", - tdb_errorstr(ctx->tdb))); - ret = EFAULT; - } - -done: - talloc_free(timest); - return ret; -} - -int nss_ncache_check_user(struct nss_nc_ctx *ctx, int ttl, - const char *domain, const char *name) -{ - char *str; - int ret; - - if (!name || !*name) return EINVAL; - - str = talloc_asprintf(ctx, "%s/%s/%s", NC_USER_PREFIX, domain, name); - if (!str) return ENOMEM; - - ret = nss_ncache_check_str(ctx, str, ttl); - - talloc_free(str); - return ret; -} - -int nss_ncache_check_group(struct nss_nc_ctx *ctx, int ttl, - const char *domain, const char *name) -{ - char *str; - int ret; - - if (!name || !*name) return EINVAL; - - str = talloc_asprintf(ctx, "%s/%s/%s", NC_GROUP_PREFIX, domain, name); - if (!str) return ENOMEM; - - ret = nss_ncache_check_str(ctx, str, ttl); - - talloc_free(str); - return ret; -} - -int nss_ncache_check_uid(struct nss_nc_ctx *ctx, int ttl, uid_t uid) -{ - char *str; - int ret; - - str = talloc_asprintf(ctx, "%s/%u", NC_UID_PREFIX, uid); - if (!str) return ENOMEM; - - ret = nss_ncache_check_str(ctx, str, ttl); - - talloc_free(str); - return ret; -} - -int nss_ncache_check_gid(struct nss_nc_ctx *ctx, int ttl, gid_t gid) -{ - char *str; - int ret; - - str = talloc_asprintf(ctx, "%s/%u", NC_GID_PREFIX, gid); - if (!str) return ENOMEM; - - ret = nss_ncache_check_str(ctx, str, ttl); - - talloc_free(str); - return ret; -} - -int nss_ncache_set_user(struct nss_nc_ctx *ctx, bool permanent, - const char *domain, const char *name) -{ - char *str; - int ret; - - if (!name || !*name) return EINVAL; - - str = talloc_asprintf(ctx, "%s/%s/%s", NC_USER_PREFIX, domain, name); - if (!str) return ENOMEM; - - ret = nss_ncache_set_str(ctx, str, permanent); - - talloc_free(str); - return ret; -} - -int nss_ncache_set_group(struct nss_nc_ctx *ctx, bool permanent, - const char *domain, const char *name) -{ - char *str; - int ret; - - if (!name || !*name) return EINVAL; - - str = talloc_asprintf(ctx, "%s/%s/%s", NC_GROUP_PREFIX, domain, name); - if (!str) return ENOMEM; - - ret = nss_ncache_set_str(ctx, str, permanent); - - talloc_free(str); - return ret; -} - -int nss_ncache_set_uid(struct nss_nc_ctx *ctx, bool permanent, uid_t uid) -{ - char *str; - int ret; - - str = talloc_asprintf(ctx, "%s/%u", NC_UID_PREFIX, uid); - if (!str) return ENOMEM; - - ret = nss_ncache_set_str(ctx, str, permanent); - - talloc_free(str); - return ret; -} - -int nss_ncache_set_gid(struct nss_nc_ctx *ctx, bool permanent, gid_t gid) -{ - char *str; - int ret; - - str = talloc_asprintf(ctx, "%s/%u", NC_GID_PREFIX, gid); - if (!str) return ENOMEM; - - ret = nss_ncache_set_str(ctx, str, permanent); - - talloc_free(str); - return ret; -} - -static int delete_permanent(struct tdb_context *tdb, - TDB_DATA key, TDB_DATA data, void *state) -{ - unsigned long long int timestamp; - bool remove_key = false; - char *ep; - - if (strncmp((char *)key.dptr, - NC_ENTRY_PREFIX, sizeof(NC_ENTRY_PREFIX)) != 0) { - /* not interested in this key */ - return 0; - } - - errno = 0; - timestamp = strtoull((const char *)data.dptr, &ep, 0); - if (errno != 0 || *ep != '\0') { - /* Malformed entry, remove it */ - remove_key = true; - goto done; - } - - if (timestamp == 0) { - /* a 0 timestamp means this is a permanent entry */ - remove_key = true; - } - -done: - if (remove_key) { - return tdb_delete(tdb, key); - } - - return 0; -} - -int nss_ncache_reset_permament(struct nss_nc_ctx *ctx) -{ - int ret; - - ret = tdb_traverse(ctx->tdb, delete_permanent, NULL); - if (ret < 0) - return EIO; - - return EOK; -} diff --git a/server/responder/nss/nsssrv_nc.h b/server/responder/nss/nsssrv_nc.h deleted file mode 100644 index c0fa197c..00000000 --- a/server/responder/nss/nsssrv_nc.h +++ /dev/null @@ -1,51 +0,0 @@ -/* - SSSD - - NSS Responder - - 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/>. -*/ - -#ifndef _NSS_NEG_CACHE_H_ -#define _NSS_NEG_CACHE_H_ - -struct nss_nc_ctx; - -/* init the in memory negative cache */ -int nss_ncache_init(TALLOC_CTX *memctx, struct nss_nc_ctx **_ctx); - -/* check if the user is expired according to the passed in time to live */ -int nss_ncache_check_user(struct nss_nc_ctx *ctx, int ttl, - const char *domain, const char *name); -int nss_ncache_check_group(struct nss_nc_ctx *ctx, int ttl, - const char *domain, const char *name); -int nss_ncache_check_uid(struct nss_nc_ctx *ctx, int ttl, uid_t uid); -int nss_ncache_check_gid(struct nss_nc_ctx *ctx, int ttl, gid_t gid); - -/* add a new neg-cache entry setting the timestamp to "now" unless - * "permanent" is set to true, in which case the timestamps is set to 0 - * and the negative cache never expires (used to permanently filter out - * users and groups) */ -int nss_ncache_set_user(struct nss_nc_ctx *ctx, bool permanent, - const char *domain, const char *name); -int nss_ncache_set_group(struct nss_nc_ctx *ctx, bool permanent, - const char *domain, const char *name); -int nss_ncache_set_uid(struct nss_nc_ctx *ctx, bool permanent, uid_t uid); -int nss_ncache_set_gid(struct nss_nc_ctx *ctx, bool permanent, gid_t gid); - -int nss_ncache_reset_permament(struct nss_nc_ctx *ctx); - -#endif /* _NSS_NEG_CACHE_H_ */ |