Normalize and shorten filenamesv0.2.0

Turns TESTHOST07.bla.com into testhost07.

Signed-off-by: Joern Engel <joern@logfs.org>

1 files changed, 11 insertions, 1 deletions

diff --git a/cancd.c b/cancd.c
index 639303c..8416d5a 100644
--- a/cancd.c
+++ b/cancd.c
@@ -27,6 +27,7 @@
 
 #include <arpa/inet.h>
 #include <assert.h>
+#include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
@@ -678,7 +679,8 @@ static void dns_visitor(void *_sip, long unused, u32 ip, size_t unused2)
 {
 	struct source_ip *sip = _sip;
 	struct hostent *he;
-	const char *old, *new;
+	const char *old;
+	char *new, *c;
 
 	he = gethostbyaddr(&ip, 4, AF_INET);
 	if (!he)
@@ -686,6 +688,14 @@ static void dns_visitor(void *_sip, long unused, u32 ip, size_t unused2)
 	new = strdup(he->h_name);
 	if (!new)
 		return;
+	for (c = new; c; c++) {
+		/* normalize and shorten name */
+		*c = tolower(*c);
+		if (*c == '.') {
+			*c = 0;
+			break;
+		}
+	}
 	old = sip->filename;
 	sip->filename = new;
 	free((void *)old);