squid/old_nettle_compat.patch

Author: Adam Majer <amajer@suse.de>
Date: Thu Jul 18 13:57:22 CEST 2019

nettle from SLE-12 is missing the change from later
versions that ignores the destLen parameter size to
base64_decode_update function. This is only used in
the assert() but we need to pass real size of the buffer
as otherwise all we get is a crash.

The missing commit in nettle is,
commit 07cb0b62a5fab216ed647f5a87e0f17ab3c9a615
Author: Niels Möller <nisse@lysator.liu.se>
Date:   Fri Feb 7 09:11:20 2014 +0100

    Base64 and base16 decoding: Use *dst_length as output only.


Index: squid-4.8/src/HttpHeader.cc
===================================================================
--- squid-4.8.orig/src/HttpHeader.cc
+++ squid-4.8/src/HttpHeader.cc
@@ -1301,7 +1301,7 @@ HttpHeader::getAuthToken(Http::HdrType i
     char *decodedAuthToken = result.rawAppendStart(BASE64_DECODE_LENGTH(fieldLen));
     struct base64_decode_ctx ctx;
     base64_decode_init(&ctx);
-    size_t decodedLen = 0;
+    size_t decodedLen = BASE64_DECODE_LENGTH(fieldLen);
     if (!base64_decode_update(&ctx, &decodedLen, reinterpret_cast<uint8_t*>(decodedAuthToken), fieldLen, field) ||
             !base64_decode_final(&ctx)) {
         return nil;
Index: squid-4.8/src/auth/basic/Config.cc
===================================================================
--- squid-4.8.orig/src/auth/basic/Config.cc
+++ squid-4.8/src/auth/basic/Config.cc
@@ -176,7 +176,7 @@ Auth::Basic::Config::decodeCleartext(con
     struct base64_decode_ctx ctx;
     base64_decode_init(&ctx);
 
-    size_t dstLen = 0;
+    size_t dstLen = BASE64_DECODE_LENGTH(srcLen)+1;
     if (base64_decode_update(&ctx, &dstLen, reinterpret_cast<uint8_t*>(cleartext), srcLen, eek) && base64_decode_final(&ctx)) {
         cleartext[dstLen] = '\0';
 
Index: squid-4.8/src/auth/negotiate/SSPI/negotiate_sspi_auth.cc
===================================================================
--- squid-4.8.orig/src/auth/negotiate/SSPI/negotiate_sspi_auth.cc
+++ squid-4.8/src/auth/negotiate/SSPI/negotiate_sspi_auth.cc
@@ -131,6 +131,7 @@ token_decode(size_t *decodedLen, uint8_t
 {
     struct base64_decode_ctx ctx;
     base64_decode_init(&ctx);
+    *decodedLen = BASE64_DECODE_LENGTH(strlen(srcLen));
     if (!base64_decode_update(&ctx, decodedLen, decoded, strlen(buf), reinterpret_cast<const uint8_t*>(buf)) ||
             !base64_decode_final(&ctx)) {
         SEND("BH base64 decode failed");
Index: squid-4.8/src/auth/negotiate/kerberos/negotiate_kerberos_auth.cc
===================================================================
--- squid-4.8.orig/src/auth/negotiate/kerberos/negotiate_kerberos_auth.cc
+++ squid-4.8/src/auth/negotiate/kerberos/negotiate_kerberos_auth.cc
@@ -681,7 +681,7 @@ main(int argc, char *const argv[])
 
         struct base64_decode_ctx ctx;
         base64_decode_init(&ctx);
-        size_t dstLen = 0;
+        size_t dstLen = BASE64_DECODE_LENGTH(srcLen);
         if (!base64_decode_update(&ctx, &dstLen, static_cast<uint8_t*>(input_token.value), srcLen, b64Token) ||
                 !base64_decode_final(&ctx)) {
             debug((char *) "%s| %s: ERROR: Invalid base64 token [%s]\n", LogTime(), PROGRAM, b64Token);
Index: squid-4.8/src/auth/negotiate/wrapper/negotiate_wrapper.cc
===================================================================
--- squid-4.8.orig/src/auth/negotiate/wrapper/negotiate_wrapper.cc
+++ squid-4.8/src/auth/negotiate/wrapper/negotiate_wrapper.cc
@@ -192,7 +192,7 @@ processingLoop(FILE *FDKIN, FILE *FDKOUT
 
         struct base64_decode_ctx ctx;
         base64_decode_init(&ctx);
-        size_t dstLen = 0;
+        size_t dstLen = length+1;
         if (!base64_decode_update(&ctx, &dstLen, token, strlen(buf+3), buf+3) ||
                 !base64_decode_final(&ctx)) {
             if (debug_enabled)
Index: squid-4.8/src/auth/ntlm/SMB_LM/ntlm_smb_lm_auth.cc
===================================================================
--- squid-4.8.orig/src/auth/ntlm/SMB_LM/ntlm_smb_lm_auth.cc
+++ squid-4.8/src/auth/ntlm/SMB_LM/ntlm_smb_lm_auth.cc
@@ -517,7 +517,7 @@ manage_request()
         struct base64_decode_ctx ctx;
         base64_decode_init(&ctx);
         size_t dstLen = 0;
-        int decodedLen = 0;
+        int decodedLen = NTLM_BLOB_BUFFER_SIZE;
         if (!base64_decode_update(&ctx, &dstLen, reinterpret_cast<uint8_t*>(decoded), strlen(buf)-3, buf+3) ||
                 !base64_decode_final(&ctx)) {
             SEND("NA Packet format error, couldn't base64-decode");
Index: squid-4.8/src/auth/ntlm/SSPI/ntlm_sspi_auth.cc
===================================================================
--- squid-4.8.orig/src/auth/ntlm/SSPI/ntlm_sspi_auth.cc
+++ squid-4.8/src/auth/ntlm/SSPI/ntlm_sspi_auth.cc
@@ -418,6 +418,7 @@ token_decode(size_t *decodedLen, uint8_t
 {
     struct base64_decode_ctx ctx;
     base64_decode_init(&ctx);
+    *decodedLen = BASE64_DECODE_LENGTH(strlen(buf))+1;
     if (!base64_decode_update(&ctx, decodedLen, decoded, strlen(buf), reinterpret_cast<const uint8_t*>(buf)) ||
             !base64_decode_final(&ctx)) {
         SEND_BH("message=\"base64 decode failed\"");
Index: squid-4.8/src/auth/ntlm/fake/ntlm_fake_auth.cc
===================================================================
--- squid-4.8.orig/src/auth/ntlm/fake/ntlm_fake_auth.cc
+++ squid-4.8/src/auth/ntlm/fake/ntlm_fake_auth.cc
@@ -153,7 +153,7 @@ main(int argc, char *argv[])
         ntlmhdr *packet;
         struct base64_decode_ctx ctx;
         base64_decode_init(&ctx);
-        size_t dstLen = 0;
+        size_t dstLen = HELPER_INPUT_BUFFER;
         if (buflen > 3 &&
                 base64_decode_update(&ctx, &dstLen, decodedBuf, buflen-3, buf+3) &&
                 base64_decode_final(&ctx)) {
Index: squid-4.8/tools/cachemgr.cc
===================================================================
--- squid-4.8.orig/tools/cachemgr.cc
+++ squid-4.8/tools/cachemgr.cc
@@ -1103,7 +1103,7 @@ decode_pub_auth(cachemgr_request * req)
     char *buf = static_cast<char*>(xmalloc(BASE64_DECODE_LENGTH(strlen(req->pub_auth))+1));
     struct base64_decode_ctx ctx;
     base64_decode_init(&ctx);
-    size_t decodedLen = 0;
+    size_t decodedLen = BASE64_DECODE_LENGTH(strlen(req->pub_auth))+1;
     if (!base64_decode_update(&ctx, &decodedLen, reinterpret_cast<uint8_t*>(buf), strlen(req->pub_auth), req->pub_auth) ||
             !base64_decode_final(&ctx)) {
         debug("cmgr: base64 decode failure. Incomplete auth token string.\n");
Index: squid-4.8/include/base64.h
===================================================================
--- squid-4.8.orig/include/base64.h
+++ squid-4.8/include/base64.h
@@ -9,11 +9,11 @@
 #ifndef _SQUID_BASE64_H
 #define _SQUID_BASE64_H
 
-#if HAVE_NETTLE_BASE64_H && HAVE_NETTLE34_BASE64
+#if HAVE_NETTLE_BASE64_H 
 #include <nettle/base64.h>
 
 #else /* Base64 functions copied from Nettle 3.4 under GPLv2, with adjustments */
-
+#error "Mssing libnettle-devel"
 /* base64.h
 
    Base-64 encoding and decoding.
Index: squid-4.8/lib/base64.c
===================================================================
--- squid-4.8.orig/lib/base64.c
+++ squid-4.8/lib/base64.c
@@ -13,7 +13,7 @@
 #include "squid.h"
 #include "base64.h"
 
-#if !HAVE_NETTLE_BASE64_H || !HAVE_NETTLE34_BASE64
+#if !HAVE_NETTLE_BASE64_H
 
 /* base64-encode.c