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https://bugs.gentoo.org/878365#c2
https://github.com/curl/curl/issues/9813
https://github.com/curl/curl/commit/efc286b7a62af0568fdcbf3c68791c9955182128
From efc286b7a62af0568fdcbf3c68791c9955182128 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Thu, 27 Oct 2022 13:54:27 +0200
Subject: [PATCH] noproxy: also match with adjacent comma
If the host name is an IP address and the noproxy string contained that
IP address with a following comma, it would erroneously not match.
Extended test 1614 to verify this combo as well.
Reported-by: Henning Schild
Fixes #9813
Closes #9814
--- a/lib/noproxy.c
+++ b/lib/noproxy.c
@@ -192,18 +192,22 @@ bool Curl_check_noproxy(const char *name, const char *no_proxy)
/* FALLTHROUGH */
case TYPE_IPV6: {
const char *check = token;
- char *slash = strchr(check, '/');
+ char *slash;
unsigned int bits = 0;
char checkip[128];
+ if(tokenlen >= sizeof(checkip))
+ /* this cannot match */
+ break;
+ /* copy the check name to a temp buffer */
+ memcpy(checkip, check, tokenlen);
+ checkip[tokenlen] = 0;
+ check = checkip;
+
+ slash = strchr(check, '/');
/* if the slash is part of this token, use it */
- if(slash && (slash < &check[tokenlen])) {
+ if(slash) {
bits = atoi(slash + 1);
- /* copy the check name to a temp buffer */
- if(tokenlen >= sizeof(checkip))
- break;
- memcpy(checkip, check, tokenlen);
- checkip[ slash - check ] = 0;
- check = checkip;
+ *slash = 0; /* null terminate there */
}
if(type == TYPE_IPV6)
match = Curl_cidr6_match(name, check, bits);
--- a/tests/data/test1614
+++ b/tests/data/test1614
@@ -16,7 +16,7 @@ unittest
proxy
</features>
<name>
-cidr comparisons
+noproxy and cidr comparisons
</name>
</client>
<errorcode>
--- a/tests/unit/unit1614.c
+++ b/tests/unit/unit1614.c
@@ -77,6 +77,20 @@ UNITTEST_START
{ NULL, NULL, 0, FALSE} /* end marker */
};
struct noproxy list[]= {
+ { "127.0.0.1", "127.0.0.1,localhost", TRUE},
+ { "127.0.0.1", "127.0.0.1,localhost,", TRUE},
+ { "127.0.0.1", "127.0.0.1/8,localhost,", TRUE},
+ { "127.0.0.1", "127.0.0.1/28,localhost,", TRUE},
+ { "127.0.0.1", "127.0.0.1/31,localhost,", TRUE},
+ { "127.0.0.1", "localhost,127.0.0.1", TRUE},
+ { "127.0.0.1", "localhost,127.0.0.1.127.0.0.1.127.0.0.1.127.0.0.1."
+ "127.0.0.1.127.0.0.1.127.0.0.1.127.0.0.1.127.0.0.1.127.0.0.1.127."
+ "0.0.1.127.0.0.1.127.0.0." /* 128 bytes "address" */, FALSE},
+ { "127.0.0.1", "localhost,127.0.0.1.127.0.0.1.127.0.0.1.127.0.0.1."
+ "127.0.0.1.127.0.0.1.127.0.0.1.127.0.0.1.127.0.0.1.127.0.0.1.127."
+ "0.0.1.127.0.0.1.127.0.0" /* 127 bytes "address" */, FALSE},
+ { "localhost", "localhost,127.0.0.1", TRUE},
+ { "localhost", "127.0.0.1,localhost", TRUE},
{ "foobar", "barfoo", FALSE},
{ "foobar", "foobar", TRUE},
{ "192.168.0.1", "foobar", FALSE},
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