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Bugfix: case-insensitive hostname matching

This commit is contained in:
Pieter Wuille 2013-07-15 12:20:36 +02:00
parent dc4d06e568
commit 8dcc006e62
1 changed files with 2 additions and 1 deletions
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3
dns.c
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@ -1,6 +1,7 @@
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <netinet/in.h>
@ -267,7 +268,7 @@ ssize_t static dnshandle(dns_opt_t *opt, const unsigned char *inbuf, size_t insi
if (ret == -1) { error = 1; goto error; }
if (ret == -2) { error = 5; goto error; }
int namel = strlen(name), hostl = strlen(opt->host);
if (strcmp(name, opt->host) && (namel<hostl+2 || name[namel-hostl-1]!='.' || strcmp(name+namel-hostl,opt->host))) { error = 5; goto error; }
if (strcasecmp(name, opt->host) && (namel<hostl+2 || name[namel-hostl-1]!='.' || strcasecmp(name+namel-hostl,opt->host))) { error = 5; goto error; }
if (inend - inpos < 4) { error = 1; goto error; }
// copy question to output
memcpy(outbuf+12, inbuf+12, inpos+4 - (inbuf+12));