diff options
Diffstat (limited to 'src/providers/ipa/ipa_common.c')
| -rw-r--r-- | src/providers/ipa/ipa_common.c | 597 |
1 files changed, 597 insertions, 0 deletions
diff --git a/src/providers/ipa/ipa_common.c b/src/providers/ipa/ipa_common.c new file mode 100644 index 00000000..7686227a --- /dev/null +++ b/src/providers/ipa/ipa_common.c @@ -0,0 +1,597 @@ +/* + SSSD + + IPA Provider Common Functions + + Authors: + Simo Sorce <ssorce@redhat.com> + + Copyright (C) 2009 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 <netdb.h> +#include <ctype.h> +#include "providers/ipa/ipa_common.h" + +struct dp_option ipa_basic_opts[] = { + { "ipa_domain", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ipa_server", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ipa_hostname", DP_OPT_STRING, NULL_STRING, NULL_STRING }, +}; + +struct dp_option ipa_def_ldap_opts[] = { + { "ldap_uri", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_search_base", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_default_bind_dn", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_default_authtok_type", DP_OPT_STRING, NULL_STRING, NULL_STRING}, + { "ldap_default_authtok", DP_OPT_BLOB, NULL_BLOB, NULL_BLOB }, + { "ldap_search_timeout", DP_OPT_NUMBER, { .number = 60 }, NULL_NUMBER }, + { "ldap_network_timeout", DP_OPT_NUMBER, { .number = 6 }, NULL_NUMBER }, + { "ldap_opt_timeout", DP_OPT_NUMBER, { .number = 6 }, NULL_NUMBER }, + { "ldap_tls_reqcert", DP_OPT_STRING, { "hard" }, NULL_STRING }, + { "ldap_user_search_base", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_user_search_scope", DP_OPT_STRING, { "sub" }, NULL_STRING }, + { "ldap_user_search_filter", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_group_search_base", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_group_search_scope", DP_OPT_STRING, { "sub" }, NULL_STRING }, + { "ldap_group_search_filter", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_schema", DP_OPT_STRING, { "ipa_v1" }, NULL_STRING }, + { "ldap_offline_timeout", DP_OPT_NUMBER, { .number = 60 }, NULL_NUMBER }, + { "ldap_force_upper_case_realm", DP_OPT_BOOL, BOOL_TRUE, BOOL_TRUE }, + { "ldap_enumeration_refresh_timeout", DP_OPT_NUMBER, { .number = 300 }, NULL_NUMBER }, + { "ldap_purge_cache_timeout", DP_OPT_NUMBER, { .number = 3600 }, NULL_NUMBER }, + { "entry_cache_timeout", DP_OPT_NUMBER, { .number = 1800 }, NULL_NUMBER }, + { "ldap_tls_cacert", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_tls_cacertdir", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_id_use_start_tls", DP_OPT_BOOL, BOOL_FALSE, BOOL_FALSE }, + { "ldap_sasl_mech", DP_OPT_STRING, { "GSSAPI" } , NULL_STRING }, + { "ldap_sasl_authid", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_krb5_keytab", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_krb5_init_creds", DP_OPT_BOOL, BOOL_TRUE, BOOL_TRUE }, + /* use the same parm name as the krb5 module so we set it only once */ + { "krb5_realm", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "ldap_pwd_policy", DP_OPT_STRING, { "none" } , NULL_STRING }, + { "ldap_referrals", DP_OPT_BOOL, BOOL_TRUE, BOOL_TRUE } +}; + +struct sdap_attr_map ipa_attr_map[] = { + { "ldap_entry_usn", "entryUSN", SYSDB_USN, NULL }, + { "ldap_rootdse_last_usn", "lastUSN", SYSDB_HIGH_USN, NULL } +}; + +struct sdap_attr_map ipa_user_map[] = { + { "ldap_user_object_class", "posixAccount", SYSDB_USER_CLASS, NULL }, + { "ldap_user_name", "uid", SYSDB_NAME, NULL }, + { "ldap_user_pwd", "userPassword", SYSDB_PWD, NULL }, + { "ldap_user_uid_number", "uidNumber", SYSDB_UIDNUM, NULL }, + { "ldap_user_gid_number", "gidNumber", SYSDB_GIDNUM, NULL }, + { "ldap_user_gecos", "gecos", SYSDB_GECOS, NULL }, + { "ldap_user_home_directory", "homeDirectory", SYSDB_HOMEDIR, NULL }, + { "ldap_user_shell", "loginShell", SYSDB_SHELL, NULL }, + { "ldap_user_principal", "krbPrincipalName", SYSDB_UPN, NULL }, + { "ldap_user_fullname", "cn", SYSDB_FULLNAME, NULL }, + { "ldap_user_member_of", "memberOf", SYSDB_MEMBEROF, NULL }, + { "ldap_user_uuid", "nsUniqueId", SYSDB_UUID, NULL }, + { "ldap_user_modify_timestamp", "modifyTimestamp", SYSDB_ORIG_MODSTAMP, NULL }, + { "ldap_user_shadow_last_change", "shadowLastChange", SYSDB_SHADOWPW_LASTCHANGE, NULL }, + { "ldap_user_shadow_min", "shadowMin", SYSDB_SHADOWPW_MIN, NULL }, + { "ldap_user_shadow_max", "shadowMax", SYSDB_SHADOWPW_MAX, NULL }, + { "ldap_user_shadow_warning", "shadowWarning", SYSDB_SHADOWPW_WARNING, NULL }, + { "ldap_user_shadow_inactive", "shadowInactive", SYSDB_SHADOWPW_INACTIVE, NULL }, + { "ldap_user_shadow_expire", "shadowExpire", SYSDB_SHADOWPW_EXPIRE, NULL }, + { "ldap_user_shadow_flag", "shadowFlag", SYSDB_SHADOWPW_FLAG, NULL }, + { "ldap_user_krb_last_pwd_change", "krbLastPwdChange", SYSDB_KRBPW_LASTCHANGE, NULL }, + { "ldap_user_krb_password_expiration", "krbPasswordExpiration", SYSDB_KRBPW_EXPIRATION, NULL }, + { "ldap_pwd_attribute", "pwdAttribute", SYSDB_PWD_ATTRIBUTE, NULL } +}; + +struct sdap_attr_map ipa_group_map[] = { + { "ldap_group_object_class", "posixGroup", SYSDB_GROUP_CLASS, NULL }, + { "ldap_group_name", "cn", SYSDB_NAME, NULL }, + { "ldap_group_pwd", "userPassword", SYSDB_PWD, NULL }, + { "ldap_group_gid_number", "gidNumber", SYSDB_GIDNUM, NULL }, + { "ldap_group_member", "member", SYSDB_MEMBER, NULL }, + { "ldap_group_uuid", "nsUniqueId", SYSDB_UUID, NULL }, + { "ldap_group_modify_timestamp", "modifyTimestamp", SYSDB_ORIG_MODSTAMP, NULL } +}; + +struct dp_option ipa_def_krb5_opts[] = { + { "krb5_kdcip", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "krb5_realm", DP_OPT_STRING, NULL_STRING, NULL_STRING }, + { "krb5_ccachedir", DP_OPT_STRING, { "/tmp" }, NULL_STRING }, + { "krb5_ccname_template", DP_OPT_STRING, { "FILE:%d/krb5cc_%U_XXXXXX" }, NULL_STRING}, + { "krb5_changepw_principal", DP_OPT_STRING, { "kadmin/changepw" }, NULL_STRING }, + { "krb5_auth_timeout", DP_OPT_NUMBER, { .number = 15 }, NULL_NUMBER }, + { "krb5_keytab", DP_OPT_STRING, { "/etc/krb5.keytab" }, NULL_STRING }, + { "krb5_validate", DP_OPT_BOOL, BOOL_TRUE, BOOL_TRUE } +}; + +int domain_to_basedn(TALLOC_CTX *memctx, const char *domain, char **basedn) +{ + const char *s; + char *dn; + char *p; + int l; + + s = domain; + dn = talloc_strdup(memctx, "dc="); + + while ((p = strchr(s, '.'))) { + l = p - s; + dn = talloc_asprintf_append_buffer(dn, "%.*s,dc=", l, s); + if (!dn) { + return ENOMEM; + } + s = p + 1; + } + dn = talloc_strdup_append_buffer(dn, s); + if (!dn) { + return ENOMEM; + } + + *basedn = dn; + return EOK; +} + +int ipa_get_options(TALLOC_CTX *memctx, + struct confdb_ctx *cdb, + const char *conf_path, + struct sss_domain_info *dom, + struct ipa_options **_opts) +{ + struct ipa_options *opts; + char *domain; + char *server; + char *ipa_hostname; + int ret; + char hostname[HOST_NAME_MAX + 1]; + + opts = talloc_zero(memctx, struct ipa_options); + if (!opts) return ENOMEM; + + ret = dp_get_options(opts, cdb, conf_path, + ipa_basic_opts, + IPA_OPTS_BASIC, + &opts->basic); + if (ret != EOK) { + goto done; + } + + domain = dp_opt_get_string(opts->basic, IPA_DOMAIN); + if (!domain) { + ret = dp_opt_set_string(opts->basic, IPA_DOMAIN, dom->name); + if (ret != EOK) { + goto done; + } + } + + /* FIXME: Make non-fatal once we have discovery */ + server = dp_opt_get_string(opts->basic, IPA_SERVER); + if (!server) { + DEBUG(0, ("Can't find ipa server, missing option!\n")); + ret = EINVAL; + goto done; + } + + ipa_hostname = dp_opt_get_string(opts->basic, IPA_HOSTNAME); + if (ipa_hostname == NULL) { + ret = gethostname(hostname, HOST_NAME_MAX); + if (ret != EOK) { + DEBUG(1, ("gethostname failed [%d][%s].\n", errno, + strerror(errno))); + ret = errno; + goto done; + } + hostname[HOST_NAME_MAX] = '\0'; + DEBUG(9, ("Setting ipa_hostname to [%s].\n", hostname)); + ret = dp_opt_set_string(opts->basic, IPA_HOSTNAME, hostname); + if (ret != EOK) { + goto done; + } + } + + + ret = EOK; + *_opts = opts; + +done: + if (ret != EOK) { + talloc_zfree(opts); + } + return ret; +} + +int ipa_get_id_options(struct ipa_options *ipa_opts, + struct confdb_ctx *cdb, + const char *conf_path, + struct sdap_options **_opts) +{ + TALLOC_CTX *tmpctx; + char *hostname; + char *basedn; + char *realm; + char *value; + int ret; + int i; + + /* self check test, this should never fail, unless someone forgot + * to properly update the code after new ldap options have been added */ + if (SDAP_OPTS_BASIC != IPA_OPTS_BASIC_TEST) { + DEBUG(0, ("Option numbers do not match (%d != %d)\n", + SDAP_OPTS_BASIC, IPA_OPTS_BASIC_TEST)); + abort(); + } + + tmpctx = talloc_new(ipa_opts); + if (!tmpctx) { + return ENOMEM; + } + + ipa_opts->id = talloc_zero(ipa_opts, struct sdap_options); + if (!ipa_opts->id) { + ret = ENOMEM; + goto done; + } + + /* get sdap options */ + ret = dp_get_options(ipa_opts->id, cdb, conf_path, + ipa_def_ldap_opts, + SDAP_OPTS_BASIC, + &ipa_opts->id->basic); + if (ret != EOK) { + goto done; + } + + if (NULL == dp_opt_get_string(ipa_opts->id->basic, SDAP_SEARCH_BASE)) { + ret = domain_to_basedn(tmpctx, + dp_opt_get_string(ipa_opts->basic, IPA_DOMAIN), + &basedn); + if (ret != EOK) { + goto done; + } + + /* FIXME: get values by querying IPA */ + /* set search base */ + value = talloc_asprintf(tmpctx, "cn=accounts,%s", basedn); + if (!value) { + ret = ENOMEM; + goto done; + } + ret = dp_opt_set_string(ipa_opts->id->basic, + SDAP_SEARCH_BASE, value); + if (ret != EOK) { + goto done; + } + DEBUG(6, ("Option %s set to %s\n", + ipa_opts->id->basic[SDAP_SEARCH_BASE].opt_name, + dp_opt_get_string(ipa_opts->id->basic, SDAP_SEARCH_BASE))); + } + + /* set the ldap_sasl_authid if the ipa_hostname override was specified */ + if (NULL == dp_opt_get_string(ipa_opts->id->basic, SDAP_SASL_AUTHID)) { + hostname = dp_opt_get_string(ipa_opts->basic, IPA_HOSTNAME); + if (hostname) { + value = talloc_asprintf(tmpctx, "host/%s", hostname); + if (!value) { + ret = ENOMEM; + goto done; + } + ret = dp_opt_set_string(ipa_opts->id->basic, + SDAP_SASL_AUTHID, value); + if (ret != EOK) { + goto done; + } + } + DEBUG(6, ("Option %s set to %s\n", + ipa_opts->id->basic[SDAP_SASL_AUTHID].opt_name, + dp_opt_get_string(ipa_opts->id->basic, SDAP_SASL_AUTHID))); + } + + /* set krb realm */ + if (NULL == dp_opt_get_string(ipa_opts->id->basic, SDAP_KRB5_REALM)) { + realm = dp_opt_get_string(ipa_opts->basic, IPA_DOMAIN); + for (i = 0; realm[i]; i++) { + realm[i] = toupper(realm[i]); + } + ret = dp_opt_set_string(ipa_opts->id->basic, + SDAP_KRB5_REALM, realm); + if (ret != EOK) { + goto done; + } + DEBUG(6, ("Option %s set to %s\n", + ipa_opts->id->basic[SDAP_KRB5_REALM].opt_name, + dp_opt_get_string(ipa_opts->id->basic, SDAP_KRB5_REALM))); + } + + /* fix schema to IPAv1 for now */ + ipa_opts->id->schema_type = SDAP_SCHEMA_IPA_V1; + + /* set user/group search bases if they are not specified */ + if (NULL == dp_opt_get_string(ipa_opts->id->basic, + SDAP_USER_SEARCH_BASE)) { + ret = dp_opt_set_string(ipa_opts->id->basic, SDAP_USER_SEARCH_BASE, + dp_opt_get_string(ipa_opts->id->basic, + SDAP_SEARCH_BASE)); + if (ret != EOK) { + goto done; + } + DEBUG(6, ("Option %s set to %s\n", + ipa_opts->id->basic[SDAP_USER_SEARCH_BASE].opt_name, + dp_opt_get_string(ipa_opts->id->basic, + SDAP_USER_SEARCH_BASE))); + } + + if (NULL == dp_opt_get_string(ipa_opts->id->basic, + SDAP_GROUP_SEARCH_BASE)) { + ret = dp_opt_set_string(ipa_opts->id->basic, SDAP_GROUP_SEARCH_BASE, + dp_opt_get_string(ipa_opts->id->basic, + SDAP_SEARCH_BASE)); + if (ret != EOK) { + goto done; + } + DEBUG(6, ("Option %s set to %s\n", + ipa_opts->id->basic[SDAP_GROUP_SEARCH_BASE].opt_name, + dp_opt_get_string(ipa_opts->id->basic, + SDAP_GROUP_SEARCH_BASE))); + } + + ret = sdap_get_map(ipa_opts->id, cdb, conf_path, + ipa_attr_map, + SDAP_AT_GENERAL, + &ipa_opts->id->gen_map); + if (ret != EOK) { + goto done; + } + + ret = sdap_get_map(ipa_opts->id, + cdb, conf_path, + ipa_user_map, + SDAP_OPTS_USER, + &ipa_opts->id->user_map); + if (ret != EOK) { + goto done; + } + + ret = sdap_get_map(ipa_opts->id, + cdb, conf_path, + ipa_group_map, + SDAP_OPTS_GROUP, + &ipa_opts->id->group_map); + if (ret != EOK) { + goto done; + } + + ret = EOK; + *_opts = ipa_opts->id; + +done: + talloc_zfree(tmpctx); + if (ret != EOK) { + talloc_zfree(ipa_opts->id); + } + return ret; +} + +/* the following define is used to keep track of * the options in the krb5 + * module, so that if they change and ipa is not updated correspondingly + * this will trigger a runtime abort error */ +#define IPA_KRB5_OPTS_TEST 8 + +int ipa_get_auth_options(struct ipa_options *ipa_opts, + struct confdb_ctx *cdb, + const char *conf_path, + struct dp_option **_opts) +{ + char *value; + int ret; + int i; + + /* self check test, this should never fail, unless someone forgot + * to properly update the code after new ldap options have been added */ + if (KRB5_OPTS != IPA_KRB5_OPTS_TEST) { + DEBUG(0, ("Option numbers do not match (%d != %d)\n", + KRB5_OPTS, IPA_KRB5_OPTS_TEST)); + abort(); + } + + ipa_opts->auth = talloc_zero(ipa_opts, struct dp_option); + if (ipa_opts->auth == NULL) { + ret = ENOMEM; + goto done; + } + + /* get krb5 options */ + ret = dp_get_options(ipa_opts, cdb, conf_path, + ipa_def_krb5_opts, + KRB5_OPTS, &ipa_opts->auth); + if (ret != EOK) { + goto done; + } + + /* set krb realm */ + if (NULL == dp_opt_get_string(ipa_opts->auth, KRB5_REALM)) { + value = dp_opt_get_string(ipa_opts->basic, IPA_DOMAIN); + if (!value) { + ret = ENOMEM; + goto done; + } + for (i = 0; value[i]; i++) { + value[i] = toupper(value[i]); + } + ret = dp_opt_set_string(ipa_opts->auth, KRB5_REALM, value); + if (ret != EOK) { + goto done; + } + DEBUG(6, ("Option %s set to %s\n", + ipa_opts->auth[KRB5_REALM].opt_name, + dp_opt_get_string(ipa_opts->auth, KRB5_REALM))); + } + + *_opts = ipa_opts->auth; + ret = EOK; + +done: + if (ret != EOK) { + talloc_zfree(ipa_opts->auth); + } + return ret; +} + +static void ipa_resolve_callback(void *private_data, struct fo_server *server) +{ + struct ipa_service *service; + struct hostent *srvaddr; + char *address; + char *new_uri; + int ret; + + service = talloc_get_type(private_data, struct ipa_service); + if (!service) { + DEBUG(1, ("FATAL: Bad private_data\n")); + return; + } + + srvaddr = fo_get_server_hostent(server); + if (!srvaddr) { + DEBUG(1, ("FATAL: No hostent available for server (%s)\n", + fo_get_server_name(server))); + return; + } + + address = talloc_asprintf(service, "%s", srvaddr->h_name); + if (!address) { + DEBUG(1, ("Failed to copy address ...\n")); + return; + } + + new_uri = talloc_asprintf(service, "ldap://%s", address); + if (!new_uri) { + DEBUG(2, ("Failed to copy URI ...\n")); + talloc_free(address); + return; + } + + /* free old one and replace with new one */ + talloc_zfree(service->sdap->uri); + service->sdap->uri = new_uri; + talloc_zfree(service->krb5_service->address); + service->krb5_service->address = address; + + ret = write_kdcinfo_file(service->krb5_service->realm, address); + if (ret != EOK) { + DEBUG(2, ("write_kdcinfo_file failed, authentication might fail.\n")); + } + +} + +int ipa_service_init(TALLOC_CTX *memctx, struct be_ctx *ctx, + const char *servers, const char *domain, + struct ipa_service **_service) +{ + TALLOC_CTX *tmp_ctx; + struct ipa_service *service; + char **list = NULL; + char *realm; + int ret; + int i; + + tmp_ctx = talloc_new(memctx); + if (!tmp_ctx) { + return ENOMEM; + } + + service = talloc_zero(tmp_ctx, struct ipa_service); + if (!service) { + ret = ENOMEM; + goto done; + } + service->sdap = talloc_zero(service, struct sdap_service); + if (!service->sdap) { + ret = ENOMEM; + goto done; + } + service->krb5_service = talloc_zero(service, struct krb5_service); + if (!service->krb5_service) { + ret = ENOMEM; + goto done; + } + + ret = be_fo_add_service(ctx, "IPA"); + if (ret != EOK) { + DEBUG(1, ("Failed to create failover service!\n")); + goto done; + } + + service->sdap->name = talloc_strdup(service, "IPA"); + if (!service->sdap->name) { + ret = ENOMEM; + goto done; + } + + service->krb5_service->name = talloc_strdup(service, "IPA"); + if (!service->krb5_service->name) { + ret = ENOMEM; + goto done; + } + + realm = talloc_strdup(service, domain); + if (!realm) { + ret = ENOMEM; + goto done; + } + for (i = 0; realm[i]; i++) { + realm[i] = toupper(realm[i]); + } + service->krb5_service->realm = realm; + + /* split server parm into a list */ + ret = split_on_separator(tmp_ctx, servers, ',', true, &list, NULL); + if (ret != EOK) { + DEBUG(1, ("Failed to parse server list!\n")); + goto done; + } + + /* now for each one add a new server to the failover service */ + for (i = 0; list[i]; i++) { + + talloc_steal(service, list[i]); + + ret = be_fo_add_server(ctx, "IPA", list[i], 0, NULL); + if (ret && ret != EEXIST) { + DEBUG(0, ("Failed to add server\n")); + goto done; + } + + DEBUG(6, ("Added Server %s\n", list[i])); + } + + ret = be_fo_service_add_callback(memctx, ctx, "IPA", + ipa_resolve_callback, service); + if (ret != EOK) { + DEBUG(1, ("Failed to add failover callback!\n")); + goto done; + } + + ret = EOK; + +done: + if (ret == EOK) { + *_service = talloc_steal(memctx, service); + } + talloc_zfree(tmp_ctx); + return ret; +} + |