From afa3e5d8401c529dad9fb6f2e3a3f4c2aa79a977 Mon Sep 17 00:00:00 2001 From: Sumit Bose Date: Mon, 20 Nov 2017 16:12:58 +0100 Subject: [PATCH 72/79] ipa: check for SYSDB_OVERRIDE_DN in process_members and get_group_dn_list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit process_members() and get_group_dn_list() are used on an IPA client to determine a list of users or groups which are missing in the cache and are needed to properly add a group or user object to the cache respectively. If a non-default view is assigned to the client the SYSDB_OVERRIDE_DN must be set for all user and group objects to indicate that it was already checked if there is an id-override defined for the object or not. There a circumstances were SYSDB_OVERRIDE_DN is not set, e.g. after a view name change. To make sure the cache is in a consistent state with this patch user and group entries without SYSDB_OVERRIDE_DN are considered as missing is a non-default view is assigned to the client. Related to https://pagure.io/SSSD/sssd/issue/3579 Reviewed-by: Fabiano Fidêncio --- src/providers/ipa/ipa_s2n_exop.c | 145 ++++++++++++++++++++++----------------- 1 file changed, 83 insertions(+), 62 deletions(-) diff --git a/src/providers/ipa/ipa_s2n_exop.c b/src/providers/ipa/ipa_s2n_exop.c index 39ed17cbf0e8c523212084197e9f2963fed88dc8..c6132f509dcc8e7af84e03e8bfe20701107d1392 100644 --- a/src/providers/ipa/ipa_s2n_exop.c +++ b/src/providers/ipa/ipa_s2n_exop.c @@ -1523,6 +1523,7 @@ fail: } static errno_t process_members(struct sss_domain_info *domain, + bool is_default_view, struct sysdb_attrs *group_attrs, char **members, TALLOC_CTX *mem_ctx, char ***_missing_members) @@ -1536,6 +1537,7 @@ static errno_t process_members(struct sss_domain_info *domain, struct sss_domain_info *parent_domain; char **missing_members = NULL; size_t miss_count = 0; + const char *attrs[] = {SYSDB_NAME, SYSDB_OVERRIDE_DN, NULL}; if (members == NULL) { DEBUG(SSSDBG_TRACE_INTERNAL, "No members\n"); @@ -1572,53 +1574,59 @@ static errno_t process_members(struct sss_domain_info *domain, goto done; } - ret = sysdb_search_user_by_name(tmp_ctx, obj_domain, members[c], NULL, + ret = sysdb_search_user_by_name(tmp_ctx, obj_domain, members[c], attrs, &msg); - if (ret == EOK) { - if (group_attrs != NULL) { - dn_str = ldb_dn_get_linearized(msg->dn); - if (dn_str == NULL) { - DEBUG(SSSDBG_OP_FAILURE, "ldb_dn_get_linearized failed.\n"); - ret = EINVAL; - goto done; - } - - DEBUG(SSSDBG_TRACE_ALL, "Adding member [%s][%s]\n", - members[c], dn_str); + if (ret == EOK || ret == ENOENT) { + if (ret == ENOENT + || (!is_default_view + && ldb_msg_find_attr_as_string(msg, SYSDB_OVERRIDE_DN, + NULL) == NULL)) { + /* only add ghost if the member is really missing */ + if (group_attrs != NULL && ret == ENOENT) { + DEBUG(SSSDBG_TRACE_ALL, "Adding ghost member [%s]\n", + members[c]); - ret = sysdb_attrs_add_string_safe(group_attrs, SYSDB_MEMBER, - dn_str); - if (ret != EOK) { - DEBUG(SSSDBG_OP_FAILURE, - "sysdb_attrs_add_string_safe failed.\n"); - goto done; + /* There were cases where the server returned the same user + * multiple times */ + ret = sysdb_attrs_add_string_safe(group_attrs, SYSDB_GHOST, + members[c]); + if (ret != EOK) { + DEBUG(SSSDBG_OP_FAILURE, + "sysdb_attrs_add_string failed.\n"); + goto done; + } } - } - } else if (ret == ENOENT) { - if (group_attrs != NULL) { - DEBUG(SSSDBG_TRACE_ALL, "Adding ghost member [%s]\n", - members[c]); - /* There were cases where the server returned the same user - * multiple times */ - ret = sysdb_attrs_add_string_safe(group_attrs, SYSDB_GHOST, - members[c]); - if (ret != EOK) { - DEBUG(SSSDBG_OP_FAILURE, - "sysdb_attrs_add_string failed.\n"); - goto done; + if (missing_members != NULL) { + missing_members[miss_count] = talloc_strdup(missing_members, + members[c]); + if (missing_members[miss_count] == NULL) { + DEBUG(SSSDBG_OP_FAILURE, "talloc_strdup failed.\n"); + ret = ENOMEM; + goto done; + } + miss_count++; } - } + } else { + if (group_attrs != NULL) { + dn_str = ldb_dn_get_linearized(msg->dn); + if (dn_str == NULL) { + DEBUG(SSSDBG_OP_FAILURE, "ldb_dn_get_linearized failed.\n"); + ret = EINVAL; + goto done; + } + + DEBUG(SSSDBG_TRACE_ALL, "Adding member [%s][%s]\n", + members[c], dn_str); - if (missing_members != NULL) { - missing_members[miss_count] = talloc_strdup(missing_members, - members[c]); - if (missing_members[miss_count] == NULL) { - DEBUG(SSSDBG_OP_FAILURE, "talloc_strdup failed.\n"); - ret = ENOMEM; - goto done; + ret = sysdb_attrs_add_string_safe(group_attrs, SYSDB_MEMBER, + dn_str); + if (ret != EOK) { + DEBUG(SSSDBG_OP_FAILURE, + "sysdb_attrs_add_string_safe failed.\n"); + goto done; + } } - miss_count++; } } else { DEBUG(SSSDBG_OP_FAILURE, "sysdb_search_user_by_name failed.\n"); @@ -1649,6 +1657,7 @@ done: } static errno_t get_group_dn_list(TALLOC_CTX *mem_ctx, + bool is_default_view, struct sss_domain_info *dom, size_t ngroups, char **groups, struct ldb_dn ***_dn_list, @@ -1664,6 +1673,7 @@ static errno_t get_group_dn_list(TALLOC_CTX *mem_ctx, size_t n_missing = 0; struct sss_domain_info *obj_domain; struct sss_domain_info *parent_domain; + const char *attrs[] = {SYSDB_NAME, SYSDB_OVERRIDE_DN, NULL}; tmp_ctx = talloc_new(NULL); if (tmp_ctx == NULL) { @@ -1689,25 +1699,31 @@ static errno_t get_group_dn_list(TALLOC_CTX *mem_ctx, goto done; } - ret = sysdb_search_group_by_name(tmp_ctx, obj_domain, groups[c], NULL, + ret = sysdb_search_group_by_name(tmp_ctx, obj_domain, groups[c], attrs, &msg); - if (ret == EOK) { - dn_list[n_dns] = ldb_dn_copy(dn_list, msg->dn); - if (dn_list[n_dns] == NULL) { - DEBUG(SSSDBG_OP_FAILURE, "ldb_dn_copy failed.\n"); - ret = ENOMEM; - goto done; + if (ret == EOK || ret == ENOENT) { + if (ret == ENOENT + || (!is_default_view + && ldb_msg_find_attr_as_string(msg, SYSDB_OVERRIDE_DN, + NULL) == NULL)) { + missing_groups[n_missing] = talloc_strdup(missing_groups, + groups[c]); + if (missing_groups[n_missing] == NULL) { + DEBUG(SSSDBG_OP_FAILURE, "talloc_strdup failed.\n"); + ret = ENOMEM; + goto done; + } + n_missing++; + + } else { + dn_list[n_dns] = ldb_dn_copy(dn_list, msg->dn); + if (dn_list[n_dns] == NULL) { + DEBUG(SSSDBG_OP_FAILURE, "ldb_dn_copy failed.\n"); + ret = ENOMEM; + goto done; + } + n_dns++; } - n_dns++; - } else if (ret == ENOENT) { - missing_groups[n_missing] = talloc_strdup(missing_groups, - groups[c]); - if (missing_groups[n_missing] == NULL) { - DEBUG(SSSDBG_OP_FAILURE, "talloc_strdup failed.\n"); - ret = ENOMEM; - goto done; - } - n_missing++; } else { DEBUG(SSSDBG_OP_FAILURE, "sysdb_search_group_by_name failed.\n"); goto done; @@ -1803,7 +1819,9 @@ static void ipa_s2n_get_user_done(struct tevent_req *subreq) } - ret = get_group_dn_list(state, state->dom, + ret = get_group_dn_list(state, + is_default_view(state->ipa_ctx->view_name), + state->dom, attrs->ngroups, attrs->groups, &group_dn_list, &missing_list); if (ret != EOK) { @@ -1832,8 +1850,10 @@ static void ipa_s2n_get_user_done(struct tevent_req *subreq) } break; } else if (attrs->response_type == RESP_GROUP_MEMBERS) { - ret = process_members(state->dom, NULL, attrs->a.group.gr_mem, - state, &missing_list); + ret = process_members(state->dom, + is_default_view(state->ipa_ctx->view_name), + NULL, attrs->a.group.gr_mem, state, + &missing_list); if (ret != EOK) { DEBUG(SSSDBG_OP_FAILURE, "process_members failed.\n"); goto done; @@ -2572,8 +2592,9 @@ static errno_t ipa_s2n_save_objects(struct sss_domain_info *dom, } } - ret = process_members(dom, attrs->sysdb_attrs, - attrs->a.group.gr_mem, NULL, NULL); + ret = process_members(dom, is_default_view(view_name), + attrs->sysdb_attrs, attrs->a.group.gr_mem, + NULL, NULL); if (ret != EOK) { DEBUG(SSSDBG_OP_FAILURE, "process_members failed.\n"); goto done; -- 2.15.1