Rename sdap_id_map to sdap_attr_map

Also start adding some infrastructure to use the USN counter when available.
In particular add a place to add generic attrs mapping, ie attributes that are
neither user nor group specific.

7 files changed, 75 insertions, 21 deletions

diff --git a/server/config/etc/sssd.api.d/sssd-ldap.conf b/server/config/etc/sssd.api.d/sssd-ldap.conf
index 1c094f6d2..af1e66cfd 100644
--- a/server/config/etc/sssd.api.d/sssd-ldap.conf
+++ b/server/config/etc/sssd.api.d/sssd-ldap.conf
@@ -16,6 +16,8 @@ krb5_kdcip = str, None
 krb5_realm = str, None
 ldap_krb5_keytab = str, None
 ldap_krb5_init_creds = bool, None
+ldap_entry_usn = str, None
+ldap_rootdse_last_usn = str, None
 
 [provider/ldap/id]
 ldap_search_timeout = int, None
diff --git a/server/db/sysdb.h b/server/db/sysdb.h
index 72f56dba6..642cc30a5 100644
--- a/server/db/sysdb.h
+++ b/server/db/sysdb.h
@@ -75,6 +75,9 @@
 #define SYSDB_ORIG_DN "originalDN"
 #define SYSDB_ORIG_MODSTAMP "originalModifyTimestamp"
 
+#define SYSDB_USN "entryUSN"
+#define SYSDB_HIGH_USN "highestUSN"
+
 #define SYSDB_NEXTID_FILTER "("SYSDB_NEXTID"=*)"
 
 #define SYSDB_UC "objectclass="SYSDB_USER_CLASS
diff --git a/server/providers/ipa/ipa_common.c b/server/providers/ipa/ipa_common.c
index 3f4d25dea..a571aead6 100644
--- a/server/providers/ipa/ipa_common.c
+++ b/server/providers/ipa/ipa_common.c
@@ -63,7 +63,12 @@ struct dp_option ipa_def_ldap_opts[] = {
     { "krb5_realm", DP_OPT_STRING, NULL_STRING, NULL_STRING }
 };
 
-struct sdap_id_map ipa_user_map[] = {
+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 },
@@ -89,7 +94,7 @@ struct sdap_id_map ipa_user_map[] = {
     { "ldap_pwd_attribute", "pwdAttribute", SYSDB_PWD_ATTRIBUTE, NULL }
 };
 
-struct sdap_id_map ipa_group_map[] = {
+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 },
@@ -354,6 +359,14 @@ int ipa_get_id_options(struct ipa_options *ipa_opts,
                                     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,
diff --git a/server/providers/ldap/ldap_common.c b/server/providers/ldap/ldap_common.c
index b117d022e..f7cdf75e4 100644
--- a/server/providers/ldap/ldap_common.c
+++ b/server/providers/ldap/ldap_common.c
@@ -56,7 +56,22 @@ struct dp_option default_basic_opts[] = {
     { "krb5_realm", DP_OPT_STRING, NULL_STRING, NULL_STRING }
 };
 
-struct sdap_id_map rfc2307_user_map[] = {
+struct sdap_attr_map generic_attr_map[] = {
+    { "ldap_entry_usn", NULL, SYSDB_USN, NULL },
+    { "ldap_rootdse_last_usn", NULL, SYSDB_USN, NULL }
+};
+
+struct sdap_attr_map gen_ipa_attr_map[] = {
+    { "ldap_entry_usn", "entryUSN", SYSDB_USN, NULL },
+    { "ldap_rootdse_last_usn", "lastUSN", SYSDB_HIGH_USN, NULL }
+};
+
+struct sdap_attr_map gen_ad_attr_map[] = {
+    { "ldap_entry_usn", "uSNChanged", SYSDB_USN, NULL },
+    { "ldap_rootdse_last_usn", "highestCommittedUSN", SYSDB_HIGH_USN, NULL }
+};
+
+struct sdap_attr_map rfc2307_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 },
@@ -82,7 +97,7 @@ struct sdap_id_map rfc2307_user_map[] = {
     { "ldap_pwd_attribute", "pwdAttribute", SYSDB_PWD_ATTRIBUTE, NULL }
 };
 
-struct sdap_id_map rfc2307_group_map[] = {
+struct sdap_attr_map rfc2307_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 },
@@ -92,7 +107,7 @@ struct sdap_id_map rfc2307_group_map[] = {
     { "ldap_group_modify_timestamp", "modifyTimestamp", SYSDB_ORIG_MODSTAMP, NULL }
 };
 
-struct sdap_id_map rfc2307bis_user_map[] = {
+struct sdap_attr_map rfc2307bis_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 },
@@ -119,7 +134,7 @@ struct sdap_id_map rfc2307bis_user_map[] = {
     { "ldap_pwd_attribute", "pwdAttribute", SYSDB_PWD_ATTRIBUTE, NULL }
 };
 
-struct sdap_id_map rfc2307bis_group_map[] = {
+struct sdap_attr_map rfc2307bis_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 },
@@ -135,8 +150,9 @@ int ldap_get_options(TALLOC_CTX *memctx,
                      const char *conf_path,
                      struct sdap_options **_opts)
 {
-    struct sdap_id_map *default_user_map;
-    struct sdap_id_map *default_group_map;
+    struct sdap_attr_map *default_attr_map;
+    struct sdap_attr_map *default_user_map;
+    struct sdap_attr_map *default_group_map;
     struct sdap_options *opts;
     char *schema;
     int ret;
@@ -181,21 +197,25 @@ int ldap_get_options(TALLOC_CTX *memctx,
     schema = dp_opt_get_string(opts->basic, SDAP_SCHEMA);
     if (strcasecmp(schema, "rfc2307") == 0) {
         opts->schema_type = SDAP_SCHEMA_RFC2307;
+        default_attr_map = generic_attr_map;
         default_user_map = rfc2307_user_map;
         default_group_map = rfc2307_group_map;
     } else
     if (strcasecmp(schema, "rfc2307bis") == 0) {
         opts->schema_type = SDAP_SCHEMA_RFC2307BIS;
+        default_attr_map = generic_attr_map;
         default_user_map = rfc2307bis_user_map;
         default_group_map = rfc2307bis_group_map;
     } else
     if (strcasecmp(schema, "IPA") == 0) {
         opts->schema_type = SDAP_SCHEMA_IPA_V1;
+        default_attr_map = gen_ipa_attr_map;
         default_user_map = rfc2307bis_user_map;
         default_group_map = rfc2307bis_group_map;
     } else
     if (strcasecmp(schema, "AD") == 0) {
         opts->schema_type = SDAP_SCHEMA_AD;
+        default_attr_map = gen_ad_attr_map;
         default_user_map = rfc2307bis_user_map;
         default_group_map = rfc2307bis_group_map;
     } else {
@@ -205,6 +225,14 @@ int ldap_get_options(TALLOC_CTX *memctx,
     }
 
     ret = sdap_get_map(opts, cdb, conf_path,
+                       default_attr_map,
+                       SDAP_AT_GENERAL,
+                       &opts->gen_map);
+    if (ret != EOK) {
+        goto done;
+    }
+
+    ret = sdap_get_map(opts, cdb, conf_path,
                        default_user_map,
                        SDAP_OPTS_USER,
                        &opts->user_map);
diff --git a/server/providers/ldap/ldap_id.c b/server/providers/ldap/ldap_id.c
index 7e69c3dc6..b7e29e611 100644
--- a/server/providers/ldap/ldap_id.c
+++ b/server/providers/ldap/ldap_id.c
@@ -33,7 +33,7 @@
 #include "providers/ldap/sdap_async.h"
 
 static int build_attrs_from_map(TALLOC_CTX *memctx,
-                                struct sdap_id_map *map,
+                                struct sdap_attr_map *map,
                                 size_t size,
                                 const char ***_attrs)
 {
diff --git a/server/providers/ldap/sdap.c b/server/providers/ldap/sdap.c
index 94cea885c..5da698a1e 100644
--- a/server/providers/ldap/sdap.c
+++ b/server/providers/ldap/sdap.c
@@ -29,14 +29,14 @@
 int sdap_get_map(TALLOC_CTX *memctx,
                  struct confdb_ctx *cdb,
                  const char *conf_path,
-                 struct sdap_id_map *def_map,
+                 struct sdap_attr_map *def_map,
                  int num_entries,
-                 struct sdap_id_map **_map)
+                 struct sdap_attr_map **_map)
 {
-    struct sdap_id_map *map;
+    struct sdap_attr_map *map;
     int i, ret;
 
-    map = talloc_array(memctx, struct sdap_id_map, num_entries);
+    map = talloc_array(memctx, struct sdap_attr_map, num_entries);
     if (!map) {
         return ENOMEM;
     }
@@ -70,7 +70,7 @@ int sdap_get_map(TALLOC_CTX *memctx,
 
 static int sdap_parse_entry(TALLOC_CTX *memctx,
                             struct sdap_handle *sh, struct sdap_msg *sm,
-                            struct sdap_id_map *map, int attrs_num,
+                            struct sdap_attr_map *map, int attrs_num,
                             struct sysdb_attrs **_attrs, char **_dn)
 {
     struct sysdb_attrs *attrs;
diff --git a/server/providers/ldap/sdap.h b/server/providers/ldap/sdap.h
index 152d46b9f..03dab3045 100644
--- a/server/providers/ldap/sdap.h
+++ b/server/providers/ldap/sdap.h
@@ -120,9 +120,16 @@ enum sdap_basic_opt {
     SDAP_OPTS_BASIC /* opts counter */
 };
 
+enum sdap_gen_attrs {
+    SDAP_AT_ENTRY_USN = 0,
+    SDAP_AT_LAST_USN,
+
+    SDAP_AT_GENERAL /* attrs counter */
+};
+
 /* the objectclass must be the first attribute.
  * Functions depend on this */
-enum sdap_user_opt {
+enum sdap_user_attrs {
     SDAP_OC_USER = 0,
     SDAP_AT_USER_NAME,
     SDAP_AT_USER_PWD,
@@ -154,7 +161,7 @@ enum sdap_user_opt {
 
 /* the objectclass must be the first attribute.
  * Functions depend on this */
-enum sdap_group_opt {
+enum sdap_group_attrs {
     SDAP_OC_GROUP = 0,
     SDAP_AT_GROUP_NAME,
     SDAP_AT_GROUP_PWD,
@@ -166,7 +173,7 @@ enum sdap_group_opt {
     SDAP_OPTS_GROUP /* attrs counter */
 };
 
-struct sdap_id_map {
+struct sdap_attr_map {
     const char *opt_name;
     const char *def_name;
     const char *sys_name;
@@ -175,8 +182,9 @@ struct sdap_id_map {
 
 struct sdap_options {
     struct dp_option *basic;
-    struct sdap_id_map *user_map;
-    struct sdap_id_map *group_map;
+    struct sdap_attr_map *gen_map;
+    struct sdap_attr_map *user_map;
+    struct sdap_attr_map *group_map;
 
     /* supported schema types */
     enum schema_type {
@@ -193,9 +201,9 @@ struct sdap_options {
 int sdap_get_map(TALLOC_CTX *memctx,
                  struct confdb_ctx *cdb,
                  const char *conf_path,
-                 struct sdap_id_map *def_map,
+                 struct sdap_attr_map *def_map,
                  int num_entries,
-                 struct sdap_id_map **_map);
+                 struct sdap_attr_map **_map);
 
 int sdap_parse_user(TALLOC_CTX *memctx, struct sdap_options *opts,
                     struct sdap_handle *sh, struct sdap_msg *sm,