openwrtv3/package/network/utils/iptables/patches/400-lenient-restore.patch

--- a/ip6tables-restore.c
+++ b/ip6tables-restore.c
@@ -16,6 +16,8 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdarg.h>
+#include <setjmp.h>
 #include "ip6tables.h"
 #include "xtables.h"
 #include "libiptc/libip6tc.h"
@@ -27,6 +29,7 @@
 #define DEBUGP(x, args...)
 #endif
 
+static jmp_buf jmp;
 static int binary = 0, counters = 0, verbose = 0, noflush = 0;
 
 /* Keeping track of external matches and targets.  */
@@ -37,6 +40,7 @@ static const struct option options[] = {
 	{.name = "test",     .has_arg = false, .val = 't'},
 	{.name = "help",     .has_arg = false, .val = 'h'},
 	{.name = "noflush",  .has_arg = false, .val = 'n'},
+	{.name = "lenient",  .has_arg = false, .val = 'l'},
 	{.name = "modprobe", .has_arg = true,  .val = 'M'},
 	{NULL},
 };
@@ -52,6 +56,7 @@ static void print_usage(const char *name
 			"	   [ --test ]\n"
 			"	   [ --help ]\n"
 			"	   [ --noflush ]\n"
+			"	   [ --lenient ]\n"
 			"          [ --modprobe=<command>]\n", name);
 
 	exit(1);
@@ -114,6 +119,17 @@ static void free_argv(void) {
 		free(newargv[i]);
 }
 
+static void catch_exit_error(enum xtables_exittype status, const char *msg, ...)
+{
+	va_list args;
+	fprintf(stderr, "line %d: ", line);
+	va_start(args, msg);
+	vfprintf(stderr, msg, args);
+	va_end(args);
+	fprintf(stderr, "\n");
+	longjmp(jmp, status);
+}
+
 #ifdef IPTABLES_MULTI
 int ip6tables_restore_main(int argc, char *argv[])
 #else
@@ -141,7 +157,7 @@ int main(int argc, char *argv[])
 	init_extensions();
 #endif
 
-	while ((c = getopt_long(argc, argv, "bcvthnM:", options, NULL)) != -1) {
+	while ((c = getopt_long(argc, argv, "bcvthnlM:", options, NULL)) != -1) {
 		switch (c) {
 			case 'b':
 				binary = 1;
@@ -162,6 +178,9 @@ int main(int argc, char *argv[])
 			case 'n':
 				noflush = 1;
 				break;
+			case 'l':
+				ip6tables_globals.exit_err = catch_exit_error;
+				break;
 			case 'M':
 				xtables_modprobe_program = optarg;
 				break;
@@ -440,8 +459,11 @@ int main(int argc, char *argv[])
 			for (a = 0; a < newargc; a++)
 				DEBUGP("argv[%u]: %s\n", a, newargv[a]);
 
-			ret = do_command6(newargc, newargv,
-					 &newargv[2], &handle);
+			if (!setjmp(jmp))
+				ret = do_command6(newargc, newargv,
+						 &newargv[2], &handle);
+			else
+				ret = 1;
 
 			free_argv();
 			fflush(stdout);
--- a/iptables-restore.c
+++ b/iptables-restore.c
@@ -13,6 +13,8 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdarg.h>
+#include <setjmp.h>
 #include "iptables.h"
 #include "xtables.h"
 #include "libiptc/libiptc.h"
@@ -24,6 +26,7 @@
 #define DEBUGP(x, args...)
 #endif
 
+static jmp_buf jmp;
 static int binary = 0, counters = 0, verbose = 0, noflush = 0;
 
 /* Keeping track of external matches and targets.  */
@@ -34,6 +37,7 @@ static const struct option options[] = {
 	{.name = "test",     .has_arg = false, .val = 't'},
 	{.name = "help",     .has_arg = false, .val = 'h'},
 	{.name = "noflush",  .has_arg = false, .val = 'n'},
+	{.name = "lenient",  .has_arg = false, .val = 'l'},
 	{.name = "modprobe", .has_arg = true,  .val = 'M'},
 	{.name = "table",    .has_arg = true,  .val = 'T'},
 	{NULL},
@@ -52,6 +56,7 @@ static void print_usage(const char *name
 			"	   [ --test ]\n"
 			"	   [ --help ]\n"
 			"	   [ --noflush ]\n"
+			"	   [ --lenient ]\n"
 			"	   [ --table=<TABLE> ]\n"
 			"          [ --modprobe=<command>]\n", name);
 
@@ -114,6 +119,17 @@ static void free_argv(void) {
 		free(newargv[i]);
 }
 
+static void catch_exit_error(enum xtables_exittype status, const char *msg, ...)
+{
+	va_list args;
+	fprintf(stderr, "line %d: ", line);
+	va_start(args, msg);
+	vfprintf(stderr, msg, args);
+	va_end(args);
+	fprintf(stderr, "\n");
+	longjmp(jmp, status);
+}
+
 #ifdef IPTABLES_MULTI
 int
 iptables_restore_main(int argc, char *argv[])
@@ -144,7 +160,7 @@ main(int argc, char *argv[])
 	init_extensions();
 #endif
 
-	while ((c = getopt_long(argc, argv, "bcvthnM:T:", options, NULL)) != -1) {
+	while ((c = getopt_long(argc, argv, "bcvthnlM:T:", options, NULL)) != -1) {
 		switch (c) {
 			case 'b':
 				binary = 1;
@@ -165,6 +181,9 @@ main(int argc, char *argv[])
 			case 'n':
 				noflush = 1;
 				break;
+			case 'l':
+				iptables_globals.exit_err = catch_exit_error;
+				break;
 			case 'M':
 				xtables_modprobe_program = optarg;
 				break;
@@ -445,8 +464,11 @@ main(int argc, char *argv[])
 			for (a = 0; a < newargc; a++)
 				DEBUGP("argv[%u]: %s\n", a, newargv[a]);
 
-			ret = do_command(newargc, newargv,
-					 &newargv[2], &handle);
+			if (!setjmp(jmp))
+				ret = do_command(newargc, newargv,
+						 &newargv[2], &handle);
+			else
+				ret = 1;
 
 			free_argv();
 			fflush(stdout);