diff options
Diffstat (limited to 'src/providers/ipa/ipa_hosts.c')
| -rw-r--r-- | src/providers/ipa/ipa_hosts.c | 449 |
1 files changed, 449 insertions, 0 deletions
diff --git a/src/providers/ipa/ipa_hosts.c b/src/providers/ipa/ipa_hosts.c new file mode 100644 index 000000000..04ce9adfd --- /dev/null +++ b/src/providers/ipa/ipa_hosts.c @@ -0,0 +1,449 @@ +/* + SSSD + + Authors: + Jan Zeleny <jzeleny@redhat.com> + + Copyright (C) 2012 Red Hat + + 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 "db/sysdb.h" +#include "providers/ldap/sdap_async.h" +#include "providers/ipa/ipa_hosts.h" +/* FIXME: this is temporary, use proper map instead */ +#include "providers/ipa/ipa_hbac_private.h" + +struct ipa_host_state { + struct tevent_context *ev; + struct sysdb_ctx *sysdb; + struct sdap_handle *sh; + struct sdap_options *opts; + const char **attrs; + + struct sdap_search_base **search_bases; + int search_base_iter; + + char *cur_filter; + char *host_filter; + + const char *hostname; + + /* Return values */ + size_t host_count; + struct sysdb_attrs **hosts; + + bool fetch_hostgroups; + size_t hostgroup_count; + struct sysdb_attrs **hostgroups; + struct sdap_attr_map_info *hostgroup_map; +}; + +#define HOSTGROUP_MAP_ATTRS_COUNT 5 +static struct sdap_attr_map hostgroup_map[] = { + {"objectclass", "ipahostgroup", "hostgroup", NULL}, + {"name_attr", IPA_CN, IPA_CN, NULL}, + {"member", IPA_MEMBER, SYSDB_ORIG_MEMBER, NULL}, + {"memberof", IPA_MEMBEROF, SYSDB_ORIG_MEMBEROF, NULL}, + {"ipa_id", IPA_UNIQUE_ID, IPA_UNIQUE_ID, NULL} +}; + +static void +ipa_host_info_done(struct tevent_req *subreq); + +static void +ipa_hostgroup_info_done(struct tevent_req *subreq); + +static errno_t +ipa_host_info_next(struct tevent_req *req, + struct ipa_host_state *state); +static errno_t +ipa_hostgroup_info_next(struct tevent_req *req, + struct ipa_host_state *state); + +struct tevent_req * +ipa_host_info_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + struct sysdb_ctx *sysdb, + struct sdap_handle *sh, + struct sdap_options *opts, + const char *hostname, + const char **attrs, + bool fetch_hostgroups, + struct sdap_search_base **search_bases) +{ + errno_t ret; + struct ipa_host_state *state; + struct tevent_req *req; + + req = tevent_req_create(mem_ctx, &state, struct ipa_host_state); + if (req == NULL) { + return NULL; + } + + state->ev = ev; + state->sysdb = sysdb; + state->sh = sh; + state->opts = opts; + state->hostname = hostname; + state->search_bases = search_bases; + state->search_base_iter = 0; + state->cur_filter = NULL; + state->attrs = attrs; + state->fetch_hostgroups = fetch_hostgroups; + + if (hostname == NULL) { + state->host_filter = talloc_asprintf(state, "(objectClass=%s)", + IPA_HOST); + } else { + state->host_filter = talloc_asprintf(state, "(&(objectClass=%s)(%s=%s))", + IPA_HOST, IPA_HOST_FQDN, hostname); + } + if (state->host_filter == NULL) { + ret = ENOMEM; + goto immediate; + } + + ret = ipa_host_info_next(req, state); + if (ret == EOK) { + DEBUG(SSSDBG_CRIT_FAILURE, ("No host search base configured?\n")); + ret = EINVAL; + } + + if (ret != EAGAIN) { + goto immediate; + } + + return req; + +immediate: + if (ret == EOK) { + tevent_req_done(req); + } else { + tevent_req_error(req, ret); + } + tevent_req_post(req, ev); + return req; +} + +static errno_t ipa_host_info_next(struct tevent_req *req, + struct ipa_host_state *state) +{ + struct sdap_search_base *base; + struct tevent_req *subreq; + + base = state->search_bases[state->search_base_iter]; + if (base == NULL) { + return EOK; + } + + talloc_zfree(state->cur_filter); + state->cur_filter = sdap_get_id_specific_filter(state, state->host_filter, + base->filter); + if (state->cur_filter == NULL) { + return ENOMEM; + } + + subreq = sdap_get_generic_send(state, state->ev, state->opts, + state->sh, base->basedn, + base->scope, state->cur_filter, + state->attrs, NULL, 0, + dp_opt_get_int(state->opts->basic, + SDAP_ENUM_SEARCH_TIMEOUT)); + if (subreq == NULL) { + DEBUG(SSSDBG_CRIT_FAILURE, ("Error requesting host info\n")); + talloc_zfree(state->cur_filter); + return EIO; + } + tevent_req_set_callback(subreq, ipa_host_info_done, req); + + return EAGAIN; +} + +static void +ipa_host_info_done(struct tevent_req *subreq) +{ + errno_t ret; + struct tevent_req *req = + tevent_req_callback_data(subreq, struct tevent_req); + struct ipa_host_state *state = + tevent_req_data(req, struct ipa_host_state); + const char *host_dn; + int i; + + ret = sdap_get_generic_recv(subreq, state, + &state->host_count, + &state->hosts); + talloc_zfree(subreq); + if (ret != EOK) { + tevent_req_error(req, ret); + return; + } + + if (state->host_count == 0) { + state->search_base_iter++; + ret = ipa_host_info_next(req, state); + if (ret == EOK) { + /* No more search bases to try */ + tevent_req_error(req, ENOENT); + } else if (ret != EAGAIN) { + tevent_req_error(req, ret); + } + return; + } + + ret = replace_attribute_name(IPA_MEMBEROF, SYSDB_ORIG_MEMBEROF, + state->host_count, + state->hosts); + if (ret != EOK) { + DEBUG(SSSDBG_CRIT_FAILURE, ("Could not replace attribute names\n")); + tevent_req_error(req, ret); + return; + } + + /* Complete the map */ + for (i = 0; i < HOSTGROUP_MAP_ATTRS_COUNT; i++) { + /* These are allocated on the state, so the next time they'll + * have to be allocated again + */ + hostgroup_map[i].name = talloc_strdup(state, + hostgroup_map[i].def_name); + if (hostgroup_map[i].name == NULL) { + tevent_req_error(req, ret); + return; + } + } + + if (state->fetch_hostgroups) { + /* Look up host groups */ + if (state->hostname == NULL) { + talloc_zfree(state->host_filter); + state->host_filter = talloc_asprintf(state, "(objectClass=%s)", + IPA_HOSTGROUP); + if (state->host_filter == NULL) { + tevent_req_error(req, ENOMEM); + return; + } + state->search_base_iter = 0; + + ret = ipa_hostgroup_info_next(req, state); + if (ret == EOK) { + DEBUG(SSSDBG_CRIT_FAILURE, ("No host search base configured?\n")); + tevent_req_error(req, EINVAL); + return; + } else if (ret != EAGAIN) { + tevent_req_error(req, ret); + return; + } + } else { + state->hostgroup_map = talloc_zero(state, struct sdap_attr_map_info); + if (state->hostgroup_map == NULL) { + tevent_req_error(req, ENOMEM); + return; + } + state->hostgroup_map->map = hostgroup_map; + state->hostgroup_map->num_attrs = HOSTGROUP_MAP_ATTRS_COUNT; + + ret = sysdb_attrs_get_string(state->hosts[0], SYSDB_ORIG_DN, &host_dn); + if (ret != EOK) { + tevent_req_error(req, ret); + return; + } + + subreq = sdap_deref_search_send(state, state->ev, state->opts, state->sh, + host_dn, IPA_MEMBEROF, state->attrs, + 1, state->hostgroup_map, + dp_opt_get_int(state->opts->basic, + SDAP_ENUM_SEARCH_TIMEOUT)); + if (subreq == NULL) { + DEBUG(SSSDBG_CRIT_FAILURE, ("Error requesting host info\n")); + tevent_req_error(req, EIO); + return; + } + } + tevent_req_set_callback(subreq, ipa_hostgroup_info_done, req); + } else { + /* Nothing else to do, just complete the req */ + tevent_req_done(req); + } +} + +static errno_t ipa_hostgroup_info_next(struct tevent_req *req, + struct ipa_host_state *state) +{ + struct sdap_search_base *base; + struct tevent_req *subreq; + + base = state->search_bases[state->search_base_iter]; + if (base == NULL) { + return EOK; + } + + talloc_zfree(state->cur_filter); + state->cur_filter = sdap_get_id_specific_filter(state, state->host_filter, + base->filter); + if (state->cur_filter == NULL) { + return ENOMEM; + } + + subreq = sdap_get_generic_send(state, state->ev, state->opts, state->sh, + base->basedn, base->scope, + state->cur_filter, state->attrs, hostgroup_map, + HOSTGROUP_MAP_ATTRS_COUNT, + dp_opt_get_int(state->opts->basic, + SDAP_ENUM_SEARCH_TIMEOUT)); + if (subreq == NULL) { + DEBUG(SSSDBG_CRIT_FAILURE, ("Error requesting hostgroup info\n")); + talloc_zfree(state->cur_filter); + return EIO; + } + tevent_req_set_callback(subreq, ipa_hostgroup_info_done, req); + + return EAGAIN; +} + +static void +ipa_hostgroup_info_done(struct tevent_req *subreq) +{ + errno_t ret; + struct tevent_req *req = + tevent_req_callback_data(subreq, struct tevent_req); + struct ipa_host_state *state = + tevent_req_data(req, struct ipa_host_state); + + size_t hostgroups_total; + size_t hostgroup_count; + struct sysdb_attrs **hostgroups; + struct sdap_deref_attrs **deref_result; + const char *hostgroup_name; + const char *hostgroup_dn; + int i, j; + + if (state->hostname == NULL) { + ret = sdap_get_generic_recv(subreq, state, + &hostgroup_count, + &hostgroups); + talloc_zfree(subreq); + + /* Merge the two arrays */ + if (hostgroup_count > 0) { + hostgroups_total = hostgroup_count + state->hostgroup_count; + state->hostgroups = talloc_realloc(state, state->hostgroups, + struct sysdb_attrs *, + hostgroups_total); + if (state->hostgroups == NULL) { + tevent_req_error(req, ENOMEM); + return; + } + + i = 0; + while(state->hostgroup_count < hostgroups_total) { + state->hostgroups[state->hostgroup_count] = + talloc_steal(state->hostgroups, hostgroups[i]); + state->hostgroup_count++; + i++; + } + } + + /* Now look in the next base */ + state->search_base_iter++; + ret = ipa_hostgroup_info_next(req, state); + if (ret != EOK && ret != EAGAIN) { + tevent_req_error(req, ret); + } + + if (ret != EOK) { + /* Only continue if no error occurred + * and no req was created */ + return; + } + } else { + ret = sdap_deref_search_recv(subreq, state, + &state->hostgroup_count, + &deref_result); + talloc_zfree(subreq); + if (ret != EOK) goto done; + + if (state->hostgroup_count == 0) { + DEBUG(SSSDBG_FUNC_DATA, ("No host groups were dereferenced\n")); + } else { + state->hostgroups = talloc_zero_array(state, struct sysdb_attrs *, + state->hostgroup_count); + if (state->hostgroups == NULL) { + ret = ENOMEM; + goto done; + } + + j = 0; + for (i = 0; i < state->hostgroup_count; i++) { + ret = sysdb_attrs_get_string(deref_result[i]->attrs, + SYSDB_ORIG_DN, &hostgroup_dn); + if (ret != EOK) goto done; + + if (!sss_ldap_dn_in_search_bases(state, hostgroup_dn, + state->search_bases, + NULL)) { + continue; + } + + ret = sysdb_attrs_get_string(deref_result[i]->attrs, + IPA_CN, &hostgroup_name); + if (ret != EOK) goto done; + + DEBUG(SSSDBG_FUNC_DATA, ("Dereferenced host group: %s\n", + hostgroup_name)); + state->hostgroups[j] = talloc_steal(state->hostgroups, + deref_result[i]->attrs); + j++; + } + state->hostgroup_count = j; + } + } + +done: + if (ret == EOK) { + tevent_req_done(req); + } else { + DEBUG(SSSDBG_OP_FAILURE, ("Error [%d][%s]\n", ret, strerror(ret))); + tevent_req_error(req, ret); + } +} + +errno_t ipa_host_info_recv(struct tevent_req *req, + TALLOC_CTX *mem_ctx, + size_t *host_count, + struct sysdb_attrs ***hosts, + size_t *hostgroup_count, + struct sysdb_attrs ***hostgroups) +{ + size_t c; + struct ipa_host_state *state = + tevent_req_data(req, struct ipa_host_state); + + TEVENT_REQ_RETURN_ON_ERROR(req); + + *host_count = state->host_count; + *hosts = talloc_steal(mem_ctx, state->hosts); + for (c = 0; c < state->host_count; c++) { + /* Guarantee the memory heirarchy of the list */ + talloc_steal(state->hosts, state->hosts[c]); + } + + *hostgroup_count = state->hostgroup_count; + *hostgroups = talloc_steal(mem_ctx, state->hostgroups); + + return EOK; +} |