1 files changed, 91 insertions, 0 deletions
diff --git a/src/utils/kzonecheck/zone_check.c b/src/utils/kzonecheck/zone_check.c
new file mode 100644
index 0000000..5ddc7d0
--- /dev/null
+++ b/src/utils/kzonecheck/zone_check.c
@@ -0,0 +1,91 @@
+/*  Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <assert.h>
+
+#include "knot/zone/contents.h"
+#include "knot/zone/zonefile.h"
+#include "utils/kzonecheck/zone_check.h"
+
+typedef struct {
+	sem_handler_t handler;
+	FILE *outfile;
+	unsigned errors[SEM_ERR_UNKNOWN + 1]; /*!< Counting errors by type. */
+	unsigned error_count;                 /*!< Total error count. */
+} err_handler_stats_t;
+
+static void err_callback(sem_handler_t *handler, const zone_contents_t *zone,
+                         const zone_node_t *node, sem_error_t error, const char *data)
+{
+	assert(handler != NULL);
+	assert(zone != NULL);
+	err_handler_stats_t *stats = (err_handler_stats_t *)handler;
+
+	char buff[KNOT_DNAME_TXT_MAXLEN + 1] = "";
+	(void)knot_dname_to_str(buff, (node != NULL ? node->owner : zone->apex->owner),
+	                        sizeof(buff));
+
+	fprintf(stats->outfile, "[%s] %s%s%s\n",
+	        buff, sem_error_msg(error),
+	        (data != NULL ? " "  : ""),
+	        (data != NULL ? data : ""));
+
+	stats->errors[error]++;
+	stats->error_count++;
+}
+
+static void print_statistics(err_handler_stats_t *stats)
+{
+	fprintf(stats->outfile, "\nError summary:\n");
+	for (sem_error_t i = 0; i <= SEM_ERR_UNKNOWN; ++i) {
+		if (stats->errors[i] > 0) {
+			fprintf(stats->outfile, "%4u\t%s\n", stats->errors[i],
+			        sem_error_msg(i));
+		}
+	}
+}
+
+int zone_check(const char *zone_file, const knot_dname_t *zone_name,
+               FILE *outfile, time_t time)
+{
+	err_handler_stats_t stats = {
+		.handler = { .cb = err_callback },
+		.outfile = outfile
+	};
+
+	zloader_t zl;
+	int ret = zonefile_open(&zl, zone_file, zone_name, true, time);
+	if (ret != KNOT_EOK) {
+		return ret;
+	}
+	zl.err_handler = (sem_handler_t *)&stats;
+	zl.creator->master = true;
+
+	zone_contents_t *contents = zonefile_load(&zl);
+	zonefile_close(&zl);
+	if (contents == NULL && !stats.handler.fatal_error) {
+		return KNOT_ERROR;
+	}
+	zone_contents_deep_free(contents);
+
+	if (stats.error_count > 0) {
+		print_statistics(&stats);
+		return stats.handler.fatal_error ? KNOT_EZONEINVAL : KNOT_ESEMCHECK;
+	} else {
+		return KNOT_EOK;
+	}
+}