1 files changed, 96 insertions, 0 deletions
diff --git a/contrib/ipfilter/lib/load_file.c b/contrib/ipfilter/lib/load_file.c
new file mode 100644
index 0000000..a1d1f70
--- /dev/null
+++ b/contrib/ipfilter/lib/load_file.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2012 by Darren Reed.
+ *
+ * See the IPFILTER.LICENCE file for details on licencing.
+ *
+ * $Id: load_file.c,v 1.6.2.2 2012/07/22 08:04:24 darren_r Exp $
+ */
+
+#include "ipf.h"
+#include <ctype.h>
+
+alist_t *
+load_file(char *filename)
+{
+	alist_t *a, *rtop, *rbot;
+	char *s, line[1024], *t;
+	int linenum, not;
+	FILE *fp;
+
+	fp = fopen(filename + 7, "r");
+	if (fp == NULL) {
+		fprintf(stderr, "load_file cannot open '%s'\n", filename);
+		return NULL;
+	}
+
+	a = NULL;
+	rtop = NULL;
+	rbot = NULL;
+	linenum = 0;
+
+	while (fgets(line, sizeof(line) - 1, fp)) {
+		line[sizeof(line) - 1] = '\0';
+		linenum++;
+		/*
+		 * Hunt for CR/LF.  If no LF, stop processing.
+		 */
+		s = strchr(line, '\n');
+		if (s == NULL) {
+			fprintf(stderr, "%d:%s: line too long\n",
+				linenum, filename);
+			fclose(fp);
+			alist_free(rtop);
+			return NULL;
+		}
+
+		/*
+		 * Remove trailing spaces
+		 */
+		for (; ISSPACE(*s); s--)
+			*s = '\0';
+
+		s = strchr(line, '\r');
+		if (s != NULL)
+			*s = '\0';
+		for (t = line; ISSPACE(*t); t++)
+			;
+		if (*t == '!') {
+			not = 1;
+			t++;
+		} else
+			not = 0;
+
+		/*
+		 * Remove comment markers
+		 */
+		s = strchr(t, '#');
+		if (s != NULL) {
+			*s = '\0';
+			if (s == t)
+				continue;
+		}
+
+		/*
+		 * Trim off tailing white spaces
+		 */
+		s = strlen(t) + t - 1;
+		while (ISSPACE(*s))
+			*s-- = '\0';
+
+		a = alist_new(AF_UNSPEC, t);
+		if (a != NULL) {
+			a->al_not = not;
+			if (rbot != NULL)
+				rbot->al_next = a;
+			else
+				rtop = a;
+			rbot = a;
+		} else {
+			fprintf(stderr, "%s:%d unrecognised content :%s\n",
+				filename, linenum, t);
+		}
+	}
+	fclose(fp);
+
+	return rtop;
+}