nfqws2: deduplicate code

nfq2/helpers.c

@@ -8,6 +8,7 @@
 #include <stdlib.h>
 #include <ctype.h>
 #include <libgen.h>
+#include <errno.h>
 
 #define UNIQ_SORT \
 { \
@@ -125,7 +126,26 @@ bool load_file(const char *filename, off_t offset, void *buffer, size_t *buffer_
 	fclose(F);
 	return true;
 }
+bool save_file(const char *filename, const void *buffer, size_t buffer_size)
+{
+	FILE *F;
 
+	F = fopen(filename, "wb");
+	if (!F) return false;
+	size_t wr = fwrite(buffer, 1, buffer_size, F);
+	if (ferror(F))
+	{
+		fclose(F);
+		return false;
+	}
+	fclose(F);
+	if (wr!=buffer_size)
+	{
+		errno = EIO;
+		return false;
+	}
+	return true;
+}
 bool append_to_list_file(const char *filename, const char *s)
 {
 	FILE *F = fopen(filename,"at");

nfq2/helpers.h

@@ -34,6 +34,7 @@ char *strncasestr(const char *s,const char *find, size_t slen);
 bool is_identifier(const char *p);
 
 bool load_file(const char *filename, off_t offset, void *buffer, size_t *buffer_size);
+bool save_file(const char *filename, const void *buffer, size_t buffer_size);
 bool append_to_list_file(const char *filename, const char *s);
 
 void expand_bits(void *target, const void *source, unsigned int source_bitlen, unsigned int target_bytelen);

nfq2/nfqws.c

@@ -2059,6 +2059,11 @@ int main(int argc, char **argv)
 			break;
 		case IDX_LUA_GC:
 			params.lua_gc = atoi(optarg);
+			if (params.lua_gc<0)
+			{
+				DLOG_ERR("lua-gc must be >=0\n");
+				exit_clean(1);
+			}
 			break;
 		case IDX_HOSTLIST:
 			if (bSkip) break;