From 861302754636745a9b60aa3946a749b779d4ef06 Mon Sep 17 00:00:00 2001
From: Sumit Bose <sbose@redhat.com>
Date: Mon, 2 Jul 2018 10:38:54 +0200
Subject: [PATCH 06/19] confdb: add confdb_certmap_to_sysdb()

Add a function to write certificate mapping and matching rules from the
config database to the cache of a domain.

Related to https://pagure.io/SSSD/sssd/issue/3500

Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>
(cherry picked from commit d9cc38008a51a8a5189904f175e4d10cbde4a974)
---
 src/confdb/confdb.c | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/confdb/confdb.h | 23 +++++++++++++
 2 files changed, 122 insertions(+)

diff --git a/src/confdb/confdb.c b/src/confdb/confdb.c
index 22068cacccc90d83047b148513b58618f176dd9a..7de0fb3cc7031767d748bd4fb739a3376fd364e3 100644
--- a/src/confdb/confdb.c
+++ b/src/confdb/confdb.c
@@ -2196,3 +2196,102 @@ done:
     talloc_free(tmp_ctx);
     return ret;
 }
+
+static errno_t confdb_get_all_certmaps(TALLOC_CTX *mem_ctx,
+                                       struct confdb_ctx *cdb,
+                                       struct sss_domain_info *dom,
+                                       struct certmap_info ***_certmap_list)
+{
+    TALLOC_CTX *tmp_ctx = NULL;
+    struct ldb_dn *dn = NULL;
+    struct ldb_result *res = NULL;
+    /* The attributte order is important, because it is used in
+     * sysdb_ldb_msg_attr_to_certmap_info and must match
+     * enum certmap_info_member. */
+    static const char *attrs[] = { CONFDB_CERTMAP_NAME,
+                                   CONFDB_CERTMAP_MAPRULE,
+                                   CONFDB_CERTMAP_MATCHRULE,
+                                   CONFDB_CERTMAP_PRIORITY,
+                                   CONFDB_CERTMAP_DOMAINS,
+                                   NULL};
+    struct certmap_info **certmap_list = NULL;
+    size_t c;
+    int ret;
+
+    tmp_ctx = talloc_new(NULL);
+    if (tmp_ctx == NULL) {
+        return ENOMEM;
+    }
+
+    dn = ldb_dn_new_fmt(tmp_ctx, cdb->ldb, "cn=%s,%s", dom->name,
+                                                       CONFDB_CERTMAP_BASEDN);
+    if (dn == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    ret = ldb_search(cdb->ldb, tmp_ctx, &res, dn, LDB_SCOPE_ONELEVEL,
+                     attrs, NULL);
+    if (ret != LDB_SUCCESS) {
+        ret = EIO;
+        goto done;
+    }
+
+    certmap_list = talloc_zero_array(tmp_ctx, struct certmap_info *,
+                                     res->count + 1);
+    if (certmap_list == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    for (c = 0; c < res->count; c++) {
+        ret = sysdb_ldb_msg_attr_to_certmap_info(certmap_list, res->msgs[c],
+                                                 attrs, &certmap_list[c]);
+        if (ret != EOK) {
+            DEBUG(SSSDBG_OP_FAILURE,
+                  "sysdb_ldb_msg_attr_to_certmap_info failed.\n");
+            goto done;
+        }
+    }
+
+    *_certmap_list = talloc_steal(mem_ctx, certmap_list);
+
+    ret = EOK;
+
+done:
+    talloc_free(tmp_ctx);
+    return ret;
+}
+
+int confdb_certmap_to_sysdb(struct confdb_ctx *cdb,
+                            struct sss_domain_info *dom)
+{
+    int ret;
+    TALLOC_CTX *tmp_ctx;
+    struct certmap_info **certmap_list;
+
+    tmp_ctx = talloc_new(NULL);
+    if (tmp_ctx == NULL) {
+        DEBUG(SSSDBG_OP_FAILURE, "talloc_new failed.\n");
+        return ENOMEM;
+    }
+
+    ret = confdb_get_all_certmaps(tmp_ctx, cdb, dom, &certmap_list);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_OP_FAILURE, "confdb_get_all_certmaps failed.\n");
+        goto done;
+    }
+
+    ret = sysdb_update_certmap(dom->sysdb, certmap_list, false /* TODO */);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_OP_FAILURE, "sysdb_update_certmap failed.\n");
+        goto done;
+    }
+
+    ret = EOK;
+
+done:
+    talloc_free(tmp_ctx);
+
+    return ret;
+}
diff --git a/src/confdb/confdb.h b/src/confdb/confdb.h
index 22665013aba1f768b7ecd38df9261b84807f70b8..2aae93a278eb62e9b8a18885f06d66b20f269f60 100644
--- a/src/confdb/confdb.h
+++ b/src/confdb/confdb.h
@@ -265,6 +265,15 @@
 #define CONFDB_KCM_SOCKET "socket_path"
 #define CONFDB_KCM_DB "ccache_storage" /* Undocumented on purpose */
 
+/* Certificate mapping rules */
+#define CONFDB_CERTMAP_BASEDN "cn=certmap,cn=config"
+#define CONFDB_CERTMAP_NAME "cn"
+#define CONFDB_CERTMAP_MAPRULE "maprule"
+#define CONFDB_CERTMAP_MATCHRULE "matchrule"
+#define CONFDB_CERTMAP_DOMAINS "domains"
+#define CONFDB_CERTMAP_PRIORITY "priority"
+
+
 struct confdb_ctx;
 struct config_file_ctx;
 
@@ -662,6 +671,20 @@ int confdb_get_sub_sections(TALLOC_CTX *mem_ctx,
                             const char *section,
                             char ***sections,
                             int *num_sections);
+
+/**
+ * @brief Convenience function to write the certificate mapping and matching
+ * rules from the configuration database to the cache of a domain
+ *
+ * @param[in] cdb The connection object to the confdb
+ * @param[in] dom Target domain where to rules should be written to
+ *
+ * @return 0 - Successfully retrieved the entry (or used the default)
+ * @return ENOMEM - There was insufficient memory to complete the operation
+ * @return EINVAL - Typically internal processing error
+ */
+int confdb_certmap_to_sysdb(struct confdb_ctx *cdb,
+                            struct sss_domain_info *dom);
 /**
  * @}
  */
-- 
2.14.4