* C-API: Added vlev validate level parameter to candidate_commit

* `vlev` : validate level

CHANGELOG.md

@@ -173,7 +173,10 @@ Developers may need to change their code
     * Added three-value return.
     * Code need to be changed from: checking for `<0` to `<1` to keep same semantics
   * Added `skiptop` parameter to `xml2json_vec()`
-  * Added `xe` argument to `candidate_commit` for confirmed commit extra parameters
+  * Added two arguments to `candidate_commit`
+    * `myid` : Client-id of incoming message
+    * `vlev` : validate level
+    * Both parameters are default `0` for backward-compatibility
   
 ### Minor features
 

apps/backend/backend_client.c

@@ -567,7 +567,7 @@ from_client_edit_config(clicon_handle h,
                 break;
             }
         }
-        if ((ret = candidate_commit(h, NULL, "candidate", myid, cbret)) < 0){ /* Assume validation fail, nofatal */
+        if ((ret = candidate_commit(h, NULL, "candidate", myid, VL_FULL, cbret)) < 0){ /* Assume validation fail, nofatal */
             if (netconf_operation_failed(cbret, "application", clicon_err_reason)< 0)
                 goto done;
             xmldb_copy(h, "running", "candidate");

apps/backend/backend_commit.c

@@ -518,7 +518,7 @@ validate_common(clicon_handle       h,
                  &td->td_tcvec,     /* changed: wanted values */
                  &td->td_clen) < 0)
         goto done;
-    transaction_dbg(h, CLIXON_DBG_DEFAULT, td, __FUNCTION__);
+    transaction_dbg(h, CLIXON_DBG_DETAIL, td, __FUNCTION__);
     /* Mark as changed in tree */
     for (i=0; i<td->td_dlen; i++){ /* Also down */
         xn = td->td_dvec[i];
@@ -648,6 +648,7 @@ candidate_validate(clicon_handle h,
  * @param[in]  xe         Request: <rpc><xn></rpc>  (or NULL)
  * @param[in]  db         A candidate database, not necessarily "candidate"
  * @param[in]  myid       Client id of triggering incoming message (or 0)
+ * @param[in]  vlev       Validation level (0: full validation)
  * @param[out] cbret      Return xml tree, eg <rpc-reply>..., <rpc-error.. (if retval = 0)
  * @retval     1          Validation OK       
  * @retval     0          Validation failed (with cbret set)
@@ -658,6 +659,7 @@ candidate_commit(clicon_handle h,
                  cxobj        *xe,
                  char         *db,
                  uint32_t      myid,
+                 validate_level vlev,
                  cbuf         *cbret)
 {
     int                 retval = -1;
@@ -673,8 +675,15 @@ candidate_commit(clicon_handle h,
     /* Common steps (with validate). Load candidate and running and compute diffs
      * Note this is only call that uses 3-values
      */
+    switch (vlev){
+    case VL_FULL:
         if ((ret = validate_common(h, db, td, &xret)) < 0)
             goto done;
+        break;
+    default:
+        ret = 1;
+        break;
+    }
 
     /* If the confirmed-commit feature is enabled, execute phase 2:
      *  - If a valid confirming-commit, cancel the rollback event
@@ -818,7 +827,7 @@ from_client_commit(clicon_handle h,
             goto done;
         goto ok;
     }
-    if ((ret = candidate_commit(h, xe, "candidate", myid, cbret)) < 0){ /* Assume validation fail, nofatal */
+    if ((ret = candidate_commit(h, xe, "candidate", myid, VL_FULL, cbret)) < 0){ /* Assume validation fail, nofatal */
         clicon_debug(1, "Commit candidate failed");
         if (ret < 0)
             if (netconf_operation_failed(cbret, "application", clicon_err_reason)< 0)
@@ -1085,7 +1094,7 @@ load_failsafe(clicon_handle h,
         goto done;
     if (xmldb_db_reset(h, "running") < 0)
         goto done;
-    ret = candidate_commit(h, NULL, db, 0, cbret);
+    ret = candidate_commit(h, NULL, db, 0, VL_FULL, cbret);
     if (ret != 1)
         if (xmldb_copy(h, "tmp", "running") < 0)
             goto done;

apps/backend/backend_confirm.c

@@ -653,7 +653,7 @@ do_rollback(clicon_handle h,
         confirmed_commit_persist_id_set(h, NULL);
     }
     confirmed_commit_state_set(h, ROLLBACK);
-    if (candidate_commit(h, NULL, "rollback", 0, cbret) < 0) { /* Assume validation fail, nofatal */
+    if (candidate_commit(h, NULL, "rollback", 0, VL_FULL, cbret) < 0) { /* Assume validation fail, nofatal */
         /* theoretically, this should never error, since the rollback database was previously active and therefore
          * had itself been previously and successfully committed.
          */

apps/backend/clixon_backend_commit.h

@@ -71,7 +71,8 @@ int from_client_confirmed_commit(clicon_handle h, cxobj *xe, uint32_t myid, cbuf
 int startup_validate(clicon_handle h, char *db, cxobj **xtr, cbuf *cbret);
 int startup_commit(clicon_handle h, char *db, cbuf *cbret);
 int candidate_validate(clicon_handle h, char *db, cbuf *cbret);
-int candidate_commit(clicon_handle h, cxobj *xe, char *db, uint32_t myid, cbuf *cbret);
+int candidate_commit(clicon_handle h, cxobj *xe, char *db, uint32_t myid,
+                     validate_level vlev, cbuf *cbret);
 
 int from_client_commit(clicon_handle h, cxobj *xe, cbuf *cbret, void *arg, void *regarg);
 int from_client_discard_changes(clicon_handle h, cxobj *xe, cbuf *cbret, void *arg, void *regarg);

lib/clixon/clixon_validate.h

@@ -40,6 +40,16 @@
 #ifndef _CLIXON_VALIDATE_H_
 #define _CLIXON_VALIDATE_H_
 
+/*
+ * Types
+ */
+/* Validation level at commit */
+enum validate_level_t {
+    VL_FULL = 0, /* Do full RFC 7950 validation , 0 : backward-compatible */
+    VL_NONE,     /* Do not do any validation */
+};
+typedef enum validate_level_t validate_level;
+
 /*
  * Prototypes
  */

lib/clixon/clixon_yang_parse_lib.h

@@ -54,6 +54,7 @@
 yang_stmt *yang_parse_file(FILE *fp, const char *name, yang_stmt *ysp);
 int        yang_file_find_match(clicon_handle h, const char *module, const char *revision, cbuf *fbuf);
 yang_stmt *yang_parse_filename(const char *filename, yang_stmt  *ysp);
+yang_stmt *yang_parse_module(clicon_handle h, const char *module, const char *revision, yang_stmt *yspec, char *origname);
 int        yang_parse_post(clicon_handle h, yang_stmt *yspec, int modmin);
 int        yang_spec_parse_module(clicon_handle h, const char *module,
                                   const char *revision, yang_stmt *yspec);

lib/clixon/clixon_yang_schema_mount.h

@@ -50,11 +50,6 @@
  */
 #define YANG_SCHEMA_MOUNT_ONLY_PRESENCE_CONTAINERS
 
-/*! Force add ietf-yang-library@2019-01-04 on all mount-points
- * This is a limitation of othe current implementation
- */
-#define YANG_SCHEMA_MOUNT_YANG_LIB_FORCE
-
 /*
  * Prototypes
  */

lib/src/clixon_validate.c

@@ -75,6 +75,7 @@
 #include "clixon_xpath.h"
 #include "clixon_yang_module.h"
 #include "clixon_yang_type.h"
+#include "clixon_yang_schema_mount.h"
 #include "clixon_xml_default.h"
 #include "clixon_xml_map.h"
 #include "clixon_xml_bind.h"
@@ -1007,6 +1008,15 @@ xml_yang_validate_add(clicon_handle h,
     cg_var      *cv0;
     enum cv_type cvtype;
     
+#ifdef YANG_SCHEMA_MOUNT
+    /* Do not validate beyond mountpoints */
+    if ((ret = xml_yang_mount_get(xt, NULL)) < 0)
+        goto done;
+    if (ret == 1){
+        retval = 1;
+        goto done;
+    }
+#endif
     /* if not given by argument (overide) use default link 
        and !Node has a config sub-statement and it is false */
     if ((yt = xml_spec(xt)) != NULL && yang_config(yt) != 0){
@@ -1215,6 +1225,13 @@ xml_yang_validate_all(clicon_handle h,
     cvec      *nsc = NULL;
     int        hit = 0;
 
+#ifdef YANG_SCHEMA_MOUNT
+    /* Do not validate beyond mountpoints */
+    if ((ret = xml_yang_mount_get(xt, NULL)) < 0)
+        goto done;
+    if (ret == 1)
+        goto ok;
+#endif
     /* if not given by argument (overide) use default link 
        and !Node has a config sub-statement and it is false */
     if ((yt = xml_spec(xt)) == NULL){

lib/src/clixon_yang_module.c

@@ -82,6 +82,11 @@
 #include "clixon_xml_map.h"
 #include "clixon_yang_parse_lib.h"
 
+/*! Force add ietf-yang-library@2019-01-04 on all mount-points
+ * This is a limitation of othe current implementation
+ */
+#define YANG_SCHEMA_MOUNT_YANG_LIB_FORCE
+
 /*! Create modstate structure
  *
  * @retval     md    modstate struct
@@ -826,10 +831,10 @@ yang_metadata_init(clicon_handle h)
     return retval;
 }
 
-/*! Given a yang-lib module-set XML tree, parse all modules into an yspec
+/*! Given yang-lib module-set XML tree, parse all modules into an yspec
  * 
- * This function is used where a yang-lib module-set is available to populate an
+ * This function is used where a yang-lib module-set is available to populate
- * XML mount-point.
+ * an XML mount-point.
  * @param[in] h      Clicon handle
  * @param[in] xylib  yang-lib XML tree on the form <yang-lib>...
  * @param[in] yspec  Will be populated with YANGs, is consumed
@@ -860,14 +865,16 @@ yang_lib2yspec(clicon_handle h,
             continue;
         if ((revision = xml_find_body(xi, "revision")) == NULL)
             continue;
-        if (yang_spec_parse_module(h, name, revision, yspec) < 0)
+        if (yang_parse_module(h, name, revision, yspec, NULL) == NULL)
             goto fail;
     }
 #ifdef YANG_SCHEMA_MOUNT_YANG_LIB_FORCE
     /* XXX: Ensure yang-lib is always there otherwise get state dont work for mountpoint */
-    if (yang_spec_parse_module(h, "ietf-yang-library", "2019-01-04", yspec) < 0)
+    if (yang_parse_module(h, "ietf-yang-library", "2019-01-04", yspec, NULL) < 0)
         goto fail;
 #endif
+    if (yang_parse_post(h, yspec, 0) < 0)
+        goto done;
     retval = 1;
  done:
     if (vec)

lib/src/clixon_yang_parse_lib.c

@@ -1059,7 +1059,7 @@ yang_parse_filename(const char *filename,
  *
  * See top of file for diagram of calling order
  */
-static yang_stmt *
+yang_stmt *
 yang_parse_module(clicon_handle h,
                   const char   *module, 
                   const char   *revision, 

lib/src/clixon_yang_schema_mount.c

@@ -459,11 +459,6 @@ yang_schema_yanglib_parse_mount(clicon_handle h,
         goto done;
     if (ret == 0)
         goto anydata;
-#ifdef YANG_SCHEMA_MOUNT_YANG_LIB_FORCE
-    /* XXX: Ensure yang-lib is always there otherwise get state dont work for mountpoint */
-    if (yang_spec_parse_module(h, "ietf-yang-library", "2019-01-04", yspec) < 0)
-        goto done;
-#endif
     if (xml_yang_mount_set(xt, yspec) < 0)
         goto done;
     retval = 1;

util/clixon_util_validate.c

@@ -227,7 +227,7 @@ main(int    argc,
         goto done;
     }
     if (commit){
-        if ((ret = candidate_commit(h, NULL, database, 0, cb)) < 0)
+        if ((ret = candidate_commit(h, NULL, database, 0, VL_FULL, cb)) < 0)
             goto done;
     }
     else{