Tidy up ipa options

Do not replicate every and each option we may want to set in ipa.
Just read out ldap and krb provider options (added reference in the manual too,
and removed mention of ipa specific timeout values, use ldap options for that)

Avoid calling auth module initialization twice, just pass the auth context to
the chpass module too.

Add a new ldap option SDAP_SEARCH_BASE, so that a single searching base can be
used for both users and groups. the user and group search bases can still be set
separately if necessary but they are now optional and set to be identical to
SDAP_SEARCH_BASE if not explicitly specified in the configuration.

3 files changed, 169 insertions, 149 deletions

diff --git a/server/providers/ipa/ipa_common.c b/server/providers/ipa/ipa_common.c
index 83f3f6760..d32497075 100644
--- a/server/providers/ipa/ipa_common.c
+++ b/server/providers/ipa/ipa_common.c
@@ -29,16 +29,11 @@ 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 },
-    { "ipa_search_timeout", DP_OPT_NUMBER, { .number = 60 }, NULL_NUMBER },
-    { "ipa_network_timeout", DP_OPT_NUMBER, { .number = 6 }, NULL_NUMBER },
-    { "ipa_opt_timeout", DP_OPT_NUMBER, { .number = 6 }, NULL_NUMBER },
-    { "ipa_offline_timeout", DP_OPT_NUMBER, { .number = 60 }, NULL_NUMBER },
-    { "ipa_enumeration_refresh_timeout", DP_OPT_NUMBER, { .number = 300 }, NULL_NUMBER },
-    { "entry_cache_timeout", DP_OPT_NUMBER, { .number = 1800 }, NULL_NUMBER },
 };
 
 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 },
@@ -191,14 +186,13 @@ done:
 /* the following preprocessor code is used to keep track of
  * the options in the ldap module, so that if they change and ipa
  * is not updated correspondingly this will trigger a build error */
-#if SDAP_OPTS_BASIC > 27
+#if SDAP_OPTS_BASIC > 28
 #error There are ldap options not accounted for
 #endif
 
-int ipa_get_id_options(TALLOC_CTX *memctx,
+int ipa_get_id_options(struct ipa_options *ipa_opts,
                        struct confdb_ctx *cdb,
                        const char *conf_path,
-                       struct ipa_options *ipa_opts,
                        struct sdap_options **_opts)
 {
     TALLOC_CTX *tmpctx;
@@ -209,122 +203,136 @@ int ipa_get_id_options(TALLOC_CTX *memctx,
     int ret;
     int i;
 
-    tmpctx = talloc_new(memctx);
+    tmpctx = talloc_new(ipa_opts);
     if (!tmpctx) {
         return ENOMEM;
     }
 
-    ipa_opts->id = talloc_zero(memctx, struct sdap_options);
+    ipa_opts->id = talloc_zero(ipa_opts, struct sdap_options);
     if (!ipa_opts->id) {
         ret = ENOMEM;
         goto done;
     }
 
-    /* generate sdap options */
-    ret = dp_copy_options(ipa_opts, ipa_def_ldap_opts,
-                          SDAP_OPTS_BASIC, &ipa_opts->id->basic);
+    /* 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;
     }
 
     /* set ldap_uri */
-    value = talloc_asprintf(tmpctx, "ldap://%s",
-                            dp_opt_get_string(ipa_opts->basic, IPA_SERVER));
-    if (!value) {
-        ret = ENOMEM;
-        goto done;
-    }
-    ret = dp_opt_set_string(ipa_opts->id->basic, SDAP_URI, value);
-    if (ret != EOK) {
-        goto done;
-    }
-
-    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 ldap_user_search_base */
-    value = talloc_asprintf(tmpctx, "cn=users,cn=accounts,%s", basedn);
-    if (!value) {
-        ret = ENOMEM;
-        goto done;
-    }
-    ret = dp_opt_set_string(ipa_opts->id->basic,
-                            SDAP_USER_SEARCH_BASE, value);
-    if (ret != EOK) {
-        goto done;
+    if (NULL == dp_opt_get_string(ipa_opts->id->basic, SDAP_URI)) {
+        value = talloc_asprintf(tmpctx, "ldap://%s",
+                                dp_opt_get_string(ipa_opts->basic,
+                                                  IPA_SERVER));
+        if (!value) {
+            ret = ENOMEM;
+            goto done;
+        }
+        ret = dp_opt_set_string(ipa_opts->id->basic, SDAP_URI, value);
+        if (ret != EOK) {
+            goto done;
+        }
+        DEBUG(6, ("Option %s set to %s\n",
+                  ipa_opts->id->basic[SDAP_URI].opt_name,
+                  dp_opt_get_string(ipa_opts->id->basic, SDAP_URI)));
     }
 
-    /* set ldap_group_search_base */
-    value = talloc_asprintf(tmpctx, "cn=groups,cn=accounts,%s", basedn);
-    if (!value) {
-        ret = ENOMEM;
-        goto done;
-    }
-    ret = dp_opt_set_string(ipa_opts->id->basic,
-                            SDAP_GROUP_SEARCH_BASE, value);
-    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;
+        }
 
-    /* set the ldap_sasl_authid if the ipa_hostname override was specified */
-    hostname = dp_opt_get_string(ipa_opts->basic, IPA_HOSTNAME);
-    if (hostname) {
-        value = talloc_asprintf(tmpctx, "host/%s", hostname);
+        /* 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_SASL_AUTHID, value);
+                                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 krb realm */
-    realm = dp_opt_get_string(ipa_opts->basic, IPA_DOMAIN);
-    for (i = 0; realm[i]; i++) {
-        realm[i] = toupper(realm[i]);
+    /* 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)));
     }
-    ret = dp_opt_set_string(ipa_opts->id->basic,
-                            SDAP_KRB5_REALM, realm);
-    if (ret != EOK) {
-        goto done;
+
+    /* 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;
 
-    /* copy over timeouts */
-    ret = dp_opt_set_int(ipa_opts->id->basic,
-                         SDAP_SEARCH_TIMEOUT,
-                         dp_opt_get_int(ipa_opts->basic,
-                                        IPA_SEARCH_TIMEOUT));
-    ret = dp_opt_set_int(ipa_opts->id->basic,
-                         SDAP_NETWORK_TIMEOUT,
-                         dp_opt_get_int(ipa_opts->basic,
-                                        IPA_NETWORK_TIMEOUT));
-    ret = dp_opt_set_int(ipa_opts->id->basic,
-                         SDAP_OPT_TIMEOUT,
-                         dp_opt_get_int(ipa_opts->basic,
-                                        IPA_OPT_TIMEOUT));
-    ret = dp_opt_set_int(ipa_opts->id->basic,
-                         SDAP_OFFLINE_TIMEOUT,
-                         dp_opt_get_int(ipa_opts->basic,
-                                        IPA_OFFLINE_TIMEOUT));
-    ret = dp_opt_set_int(ipa_opts->id->basic,
-                         SDAP_ENUM_REFRESH_TIMEOUT,
-                         dp_opt_get_int(ipa_opts->basic,
-                                        IPA_ENUM_REFRESH_TIMEOUT));
-    ret = dp_opt_set_int(ipa_opts->id->basic,
-                         SDAP_ENTRY_CACHE_TIMEOUT,
-                         dp_opt_get_int(ipa_opts->basic,
-                                        IPA_ENTRY_CACHE_TIMEOUT));
+    /* 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,
@@ -362,66 +370,70 @@ done:
 #error There are krb5 options not accounted for
 #endif
 
-int ipa_get_auth_options(TALLOC_CTX *memctx,
+int ipa_get_auth_options(struct ipa_options *ipa_opts,
                          struct confdb_ctx *cdb,
                          const char *conf_path,
-                         struct ipa_options *ipa_opts,
                          struct dp_option **_opts)
 {
+    char *value;
     int ret;
     int i;
-    TALLOC_CTX *tmpctx;
-    struct dp_option *opts;
-    char *value;
 
-    tmpctx = talloc_new(memctx);
-    if (!tmpctx) {
-        return ENOMEM;
-    }
-
-    opts = talloc_zero(memctx, struct dp_option);
-    if (opts == NULL) {
+    ipa_opts->auth = talloc_zero(ipa_opts, struct dp_option);
+    if (ipa_opts->auth == NULL) {
         ret = ENOMEM;
         goto done;
     }
 
-    ret = dp_copy_options(ipa_opts, ipa_def_krb5_opts,
-                          KRB5_OPTS, &opts);
+    /* 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;
     }
 
-    value = dp_opt_get_string(ipa_opts->basic, IPA_SERVER);
-    if (!value) {
-        ret = ENOMEM;
-        goto done;
-    }
-    ret = dp_opt_set_string(opts, KRB5_KDC, value);
-    if (ret != EOK) {
-        goto done;
+    /* set KDC */
+    if (NULL == dp_opt_get_string(ipa_opts->auth, KRB5_KDC)) {
+        value = dp_opt_get_string(ipa_opts->basic, IPA_SERVER);
+        if (!value) {
+            ret = ENOMEM;
+            goto done;
+        }
+        ret = dp_opt_set_string(ipa_opts->auth, KRB5_KDC, value);
+        if (ret != EOK) {
+            goto done;
+        }
+        DEBUG(6, ("Option %s set to %s\n",
+                  ipa_opts->auth[KRB5_KDC].opt_name,
+                  dp_opt_get_string(ipa_opts->auth, KRB5_KDC)));
     }
 
-
-    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(opts, KRB5_REALM, value);
-    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 = opts;
+    *_opts = ipa_opts->auth;
     ret = EOK;
 
 done:
-    talloc_zfree(tmpctx);
     if (ret != EOK) {
-        talloc_zfree(opts);
+        talloc_zfree(ipa_opts->auth);
     }
     return ret;
 }
diff --git a/server/providers/ipa/ipa_common.h b/server/providers/ipa/ipa_common.h
index 83ce48876..21e6e1a39 100644
--- a/server/providers/ipa/ipa_common.h
+++ b/server/providers/ipa/ipa_common.h
@@ -31,19 +31,20 @@ enum ipa_basic_opt {
     IPA_DOMAIN = 0,
     IPA_SERVER,
     IPA_HOSTNAME,
-    IPA_SEARCH_TIMEOUT,
-    IPA_NETWORK_TIMEOUT,
-    IPA_OPT_TIMEOUT,
-    IPA_OFFLINE_TIMEOUT,
-    IPA_ENUM_REFRESH_TIMEOUT,
-    IPA_ENTRY_CACHE_TIMEOUT,
 
     IPA_OPTS_BASIC /* opts counter */
 };
 
 struct ipa_options {
     struct dp_option *basic;
+
+    /* id provider */
     struct sdap_options *id;
+    struct sdap_id_ctx *id_ctx;
+
+    /* auth and chpass provider */
+    struct dp_option *auth;
+    struct krb5_ctx *auth_ctx;
 };
 
 /* options parsers */
@@ -53,16 +54,14 @@ int ipa_get_options(TALLOC_CTX *memctx,
                     struct sss_domain_info *dom,
                     struct ipa_options **_opts);
 
-int ipa_get_id_options(TALLOC_CTX *memctx,
+int ipa_get_id_options(struct ipa_options *ipa_opts,
                        struct confdb_ctx *cdb,
                        const char *conf_path,
-                       struct ipa_options *ipa_opts,
                        struct sdap_options **_opts);
 
-int ipa_get_auth_options(TALLOC_CTX *memctx,
+int ipa_get_auth_options(struct ipa_options *ipa_opts,
                          struct confdb_ctx *cdb,
                          const char *conf_path,
-                         struct ipa_options *ipa_opts,
                          struct dp_option **_opts);
 
 #endif /* _IPA_COMMON_H_ */
diff --git a/server/providers/ipa/ipa_init.c b/server/providers/ipa/ipa_init.c
index 0c2eb2a79..d1439ded4 100644
--- a/server/providers/ipa/ipa_init.c
+++ b/server/providers/ipa/ipa_init.c
@@ -64,15 +64,16 @@ int sssm_ipa_init(struct be_ctx *bectx,
         return ENOMEM;
     }
 
-    ctx = talloc_zero(bectx, struct sdap_id_ctx);
+    ctx = talloc_zero(ipa_options, struct sdap_id_ctx);
     if (!ctx) {
         return ENOMEM;
     }
     ctx->be = bectx;
+    ipa_options->id_ctx = ctx;
 
-    ret = ipa_get_id_options(ctx, bectx->cdb,
+    ret = ipa_get_id_options(ipa_options, bectx->cdb,
                              bectx->conf_path,
-                             ipa_options, &ctx->opts);
+                             &ctx->opts);
     if (ret != EOK) {
         goto done;
     }
@@ -95,7 +96,7 @@ int sssm_ipa_init(struct be_ctx *bectx,
 
 done:
     if (ret != EOK) {
-        talloc_free(ctx);
+        talloc_zfree(ipa_options->id_ctx);
     }
     return ret;
 }
@@ -104,11 +105,11 @@ int sssm_ipa_auth_init(struct be_ctx *bectx,
                        struct bet_ops **ops,
                        void **pvt_data)
 {
-    struct krb5_ctx *ctx = NULL;
-    int ret;
+    struct krb5_ctx *ctx;
     struct tevent_signal *sige;
-    unsigned v;
     FILE *debug_filep;
+    unsigned v;
+    int ret;
 
     if (!ipa_options) {
         ipa_get_options(bectx, bectx->cdb,
@@ -119,14 +120,22 @@ int sssm_ipa_auth_init(struct be_ctx *bectx,
         return ENOMEM;
     }
 
+    if (ipa_options->auth_ctx) {
+        /* already initialized */
+        *ops = &ipa_auth_ops;
+        *pvt_data = ipa_options->auth_ctx;
+        return EOK;
+    }
+
     ctx = talloc_zero(bectx, struct krb5_ctx);
     if (!ctx) {
         return ENOMEM;
     }
+    ipa_options->auth_ctx = ctx;
 
-    ret = ipa_get_auth_options(ctx, bectx->cdb,
+    ret = ipa_get_auth_options(ipa_options, bectx->cdb,
                                bectx->conf_path,
-                               ipa_options, &ctx->opts);
+                               &ctx->opts);
     if (ret != EOK) {
         goto done;
     }
@@ -170,7 +179,7 @@ int sssm_ipa_auth_init(struct be_ctx *bectx,
 
 done:
     if (ret != EOK) {
-        talloc_free(ctx);
+        talloc_zfree(ipa_options->auth_ctx);
     }
     return ret;
 }