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do not pass scoped IPv6 address notation on Host: directive, since

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scope identifier is local to the originating node.
do not allow scoped IPv6 address notation in URL, if it is via proxy.
This commit is contained in:
itojun 2000-05-25 15:35:51 +00:00
parent e747c390f0
commit b4f15c3bf0
1 changed files with 25 additions and 4 deletions
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29
usr.bin/ftp/fetch.c
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@ -1,4 +1,4 @@
/* $NetBSD: fetch.c,v 1.111 2000/05/01 10:35:17 lukem Exp $ */
/* $NetBSD: fetch.c,v 1.112 2000/05/25 15:35:51 itojun Exp $ */
/*-
* Copyright (c) 1997-2000 The NetBSD Foundation, Inc.
@ -38,7 +38,7 @@
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: fetch.c,v 1.111 2000/05/01 10:35:17 lukem Exp $");
__RCSID("$NetBSD: fetch.c,v 1.112 2000/05/25 15:35:51 itojun Exp $");
#endif /* not lint */
/*
@ -637,6 +637,16 @@ fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth)
FREEPTR(ppath);
goto cleanup_fetch_url;
}
if (isipv6addr(host) &&
strchr(host, '%') != NULL) {
warnx(
"Scoped address notation `%s' disallowed via web proxy",
host);
FREEPTR(phost);
FREEPTR(pport);
FREEPTR(ppath);
goto cleanup_fetch_url;
}
FREEPTR(host);
host = phost;
@ -777,8 +787,19 @@ fetch_url(const char *url, const char *proxyenv, char *proxyauth, char *wwwauth)
} else {
fprintf(fin, "GET %s HTTP/1.1\r\n", path);
if (strchr(host, ':')) {
fprintf(fin, "Host: [%s]:%d\r\n", host,
portnum);
char *h, *p;
/*
* strip off IPv6 scope identifier, since it is
* local to the node
*/
h = xstrdup(host);
if (isipv6addr(h) &&
(p = strchr(h, '%')) != NULL) {
*p = '\0';
}
fprintf(fin, "Host: [%s]:%d\r\n", h, portnum);
free(h);
} else
fprintf(fin, "Host: %s:%d\r\n", host, portnum);
fprintf(fin, "Accept: */*\r\n");