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
@@ -1301,8 +1301,8 @@ 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;
-    if (!base64_decode_update(&ctx, &decodedLen, reinterpret_cast<uint8_t*>(decodedAuthToken), fieldLen, field) ||
+    unsigned decodedLen = BASE64_DECODE_LENGTH(fieldLen);
+    if (!base64_decode_update(&ctx, &decodedLen, reinterpret_cast<uint8_t*>(decodedAuthToken), fieldLen, (uint8_t*)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
@@ -176,8 +176,8 @@ Auth::Basic::Config::decodeCleartext(con
     struct base64_decode_ctx ctx;
     base64_decode_init(&ctx);
 
-    size_t dstLen = 0;
-    if (base64_decode_update(&ctx, &dstLen, reinterpret_cast<uint8_t*>(cleartext), srcLen, eek) && base64_decode_final(&ctx)) {
+    unsigned int dstLen = BASE64_DECODE_LENGTH(srcLen)+1;
+    if (base64_decode_update(&ctx, &dstLen, reinterpret_cast<uint8_t*>(cleartext), srcLen, (const uint8_t*)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
@@ -681,8 +681,8 @@ main(int argc, char *const argv[])
 
         struct base64_decode_ctx ctx;
         base64_decode_init(&ctx);
-        size_t dstLen = 0;
-        if (!base64_decode_update(&ctx, &dstLen, static_cast<uint8_t*>(input_token.value), srcLen, b64Token) ||
+        unsigned dstLen = BASE64_DECODE_LENGTH(srcLen);
+        if (!base64_decode_update(&ctx, &dstLen, static_cast<uint8_t*>(input_token.value), srcLen, (const uint8_t*)b64Token) ||
                 !base64_decode_final(&ctx)) {
             debug((char *) "%s| %s: ERROR: Invalid base64 token [%s]\n", LogTime(), PROGRAM, b64Token);
             fprintf(stdout, "BH Invalid negotiate request token\n");
@@ -743,8 +743,8 @@ main(int argc, char *const argv[])
             }
             struct base64_encode_ctx tokCtx;
             base64_encode_init(&tokCtx);
-            size_t blen = base64_encode_update(&tokCtx, token, spnegoTokenLength, reinterpret_cast<const uint8_t*>(spnegoToken));
-            blen += base64_encode_final(&tokCtx, token+blen);
+            size_t blen = base64_encode_update(&tokCtx, (uint8_t*)token, spnegoTokenLength, reinterpret_cast<const uint8_t*>(spnegoToken));
+            blen += base64_encode_final(&tokCtx, (uint8_t*)token+blen);
             token[blen] = '\0';
 
             if (check_gss_err(major_status, minor_status, "gss_accept_sec_context()", log, 1))
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
@@ -192,8 +192,8 @@ processingLoop(FILE *FDKIN, FILE *FDKOUT
 
         struct base64_decode_ctx ctx;
         base64_decode_init(&ctx);
-        size_t dstLen = 0;
-        if (!base64_decode_update(&ctx, &dstLen, token, strlen(buf+3), buf+3) ||
+        unsigned dstLen = length+1;
+        if (!base64_decode_update(&ctx, &dstLen, token, strlen(buf+3), (const uint8_t*)buf+3) ||
                 !base64_decode_final(&ctx)) {
             if (debug_enabled)
                 fprintf(stderr, "%s| %s: Invalid base64 token [%s]\n", LogTime(), PROGRAM, buf+3);
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
@@ -203,8 +203,8 @@ make_challenge(char *domain, char *domai
 
     struct base64_encode_ctx ctx;
     base64_encode_init(&ctx);
-    size_t blen = base64_encode_update(&ctx, b64buf, len, reinterpret_cast<const uint8_t *>(&chal));
-    blen += base64_encode_final(&ctx, b64buf+blen);
+    size_t blen = base64_encode_update(&ctx, (uint8_t*)b64buf, len, reinterpret_cast<const uint8_t *>(&chal));
+    blen += base64_encode_final(&ctx, (uint8_t*)b64buf+blen);
     b64buf[blen] = '\0';
     return b64buf;
 }
@@ -516,9 +516,9 @@ manage_request()
         /* figure out what we got */
         struct base64_decode_ctx ctx;
         base64_decode_init(&ctx);
-        size_t dstLen = 0;
+        unsigned dstLen = NTLM_BLOB_BUFFER_SIZE;
         int decodedLen = 0;
-        if (!base64_decode_update(&ctx, &dstLen, reinterpret_cast<uint8_t*>(decoded), strlen(buf)-3, buf+3) ||
+        if (!base64_decode_update(&ctx, &dstLen, reinterpret_cast<uint8_t*>(decoded), strlen(buf)-3, (const uint8_t*)buf+3) ||
                 !base64_decode_final(&ctx)) {
             SEND("NA Packet format error, couldn't base64-decode");
             return;
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
@@ -153,9 +153,9 @@ main(int argc, char *argv[])
         ntlmhdr *packet;
         struct base64_decode_ctx ctx;
         base64_decode_init(&ctx);
-        size_t dstLen = 0;
+        unsigned dstLen = HELPER_INPUT_BUFFER;
         if (buflen > 3 &&
-                base64_decode_update(&ctx, &dstLen, decodedBuf, buflen-3, buf+3) &&
+                base64_decode_update(&ctx, &dstLen, decodedBuf, buflen-3, (const uint8_t*)buf+3) &&
                 base64_decode_final(&ctx)) {
             decodedLen = dstLen;
             packet = (ntlmhdr*)decodedBuf;
@@ -190,8 +190,8 @@ main(int argc, char *argv[])
             struct base64_encode_ctx eCtx;
             base64_encode_init(&eCtx);
             char *data = static_cast<char *>(xcalloc(base64_encode_len(len), 1));
-            size_t blen = base64_encode_update(&eCtx, data, len, reinterpret_cast<const uint8_t *>(&chal));
-            blen += base64_encode_final(&eCtx, data+blen);
+            size_t blen = base64_encode_update(&eCtx, (uint8_t*)data, len, reinterpret_cast<const uint8_t *>(&chal));
+            blen += base64_encode_final(&eCtx, (uint8_t*)data+blen);
             if (NTLM_packet_debug_enabled) {
                 printf("TT %.*s\n", (int)blen, data);
                 debug("sending 'TT' to squid with data:\n");
Index: squid-4.8/tools/cachemgr.cc
===================================================================
--- squid-4.8.orig/tools/cachemgr.cc
+++ squid-4.8/tools/cachemgr.cc
@@ -1082,8 +1082,8 @@ make_pub_auth(cachemgr_request * req)
     req->pub_auth = (char *) xmalloc(encodedLen);
     struct base64_encode_ctx ctx;
     base64_encode_init(&ctx);
-    size_t blen = base64_encode_update(&ctx, req->pub_auth, bufLen, reinterpret_cast<uint8_t*>(buf));
-    blen += base64_encode_final(&ctx, req->pub_auth + blen);
+    size_t blen = base64_encode_update(&ctx, (uint8_t*)req->pub_auth, bufLen, reinterpret_cast<uint8_t*>(buf));
+    blen += base64_encode_final(&ctx, (uint8_t*)req->pub_auth + blen);
     req->pub_auth[blen] = '\0';
     debug("cmgr: encoded: '%s'\n", req->pub_auth);
 }
@@ -1103,8 +1103,8 @@ 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;
-    if (!base64_decode_update(&ctx, &decodedLen, reinterpret_cast<uint8_t*>(buf), strlen(req->pub_auth), req->pub_auth) ||
+    unsigned decodedLen = BASE64_DECODE_LENGTH(strlen(req->pub_auth))+1;
+    if (!base64_decode_update(&ctx, &decodedLen, reinterpret_cast<uint8_t*>(buf), strlen(req->pub_auth), (uint8_t*)req->pub_auth) ||
             !base64_decode_final(&ctx)) {
         debug("cmgr: base64 decode failure. Incomplete auth token string.\n");
         xfree(buf);
@@ -1197,8 +1197,8 @@ make_auth_header(const cachemgr_request
     char *str64 = static_cast<char *>(xmalloc(encodedLen));
     struct base64_encode_ctx ctx;
     base64_encode_init(&ctx);
-    size_t blen = base64_encode_update(&ctx, str64, bufLen, reinterpret_cast<uint8_t*>(buf));
-    blen += base64_encode_final(&ctx, str64+blen);
+    size_t blen = base64_encode_update(&ctx, (uint8_t*)str64, bufLen, reinterpret_cast<uint8_t*>(buf));
+    blen += base64_encode_final(&ctx, (uint8_t*)str64+blen);
     str64[blen] = '\0';
 
     stringLength += snprintf(buf, sizeof(buf), "Authorization: Basic %.*s\r\n", (int)blen, str64);
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
 
Index: squid-4.8/src/format/Format.cc
===================================================================
--- squid-4.8.orig/src/format/Format.cc
+++ squid-4.8/src/format/Format.cc
@@ -557,8 +557,8 @@ Format::Format::assemble(MemBuf &mb, con
 
                     struct base64_encode_ctx ctx;
                     base64_encode_init(&ctx);
-                    auto encLength = base64_encode_update(&ctx, buf, rawLength, reinterpret_cast<const uint8_t*>(handshake.rawContent()));
-                    encLength += base64_encode_final(&ctx, buf + encLength);
+                    auto encLength = base64_encode_update(&ctx, (uint8_t*)buf, rawLength, reinterpret_cast<const uint8_t*>(handshake.rawContent()));
+                    encLength += base64_encode_final(&ctx, (uint8_t*)buf + encLength);
 
                     sb.rawAppendFinish(buf, encLength);
                     out = sb.c_str();
Index: squid-4.8/src/auth/digest/Config.cc
===================================================================
--- squid-4.8.orig/src/auth/digest/Config.cc
+++ squid-4.8/src/auth/digest/Config.cc
@@ -111,8 +111,8 @@ authDigestNonceEncode(digest_nonce_h * n
     nonce->key = xcalloc(base64_encode_len(sizeof(digest_nonce_data)), 1);
     struct base64_encode_ctx ctx;
     base64_encode_init(&ctx);
-    size_t blen = base64_encode_update(&ctx, reinterpret_cast<char*>(nonce->key), sizeof(digest_nonce_data), reinterpret_cast<const uint8_t*>(&(nonce->noncedata)));
-    blen += base64_encode_final(&ctx, reinterpret_cast<char*>(nonce->key)+blen);
+    size_t blen = base64_encode_update(&ctx, (uint8_t*)nonce->key, sizeof(digest_nonce_data), (uint8_t*)&(nonce->noncedata));
+    blen += base64_encode_final(&ctx, ((uint8_t*)(nonce->key))+blen);
 }
 
 digest_nonce_h *
Index: squid-4.8/src/auth/negotiate/kerberos/negotiate_kerberos_auth_test.cc
===================================================================
--- squid-4.8.orig/src/auth/negotiate/kerberos/negotiate_kerberos_auth_test.cc
+++ squid-4.8/src/auth/negotiate/kerberos/negotiate_kerberos_auth_test.cc
@@ -203,8 +203,8 @@ squid_kerb_proxy_auth(char *proxy)
             token = (char *) xcalloc(base64_encode_len(output_token.length), 1);
             struct base64_encode_ctx ctx;
             base64_encode_init(&ctx);
-            size_t blen = base64_encode_update(&ctx, token, output_token.length, reinterpret_cast<const uint8_t*>(output_token.value));
-            blen += base64_encode_final(&ctx, token+blen);
+            size_t blen = base64_encode_update(&ctx, (uint8_t*)token, output_token.length, reinterpret_cast<const uint8_t*>(output_token.value));
+            blen += base64_encode_final(&ctx, (uint8_t*)token+blen);
         }
     }
 
Index: squid-4.8/src/auth/negotiate/kerberos/negotiate_kerberos_pac.cc
===================================================================
--- squid-4.8.orig/src/auth/negotiate/kerberos/negotiate_kerberos_pac.cc
+++ squid-4.8/src/auth/negotiate/kerberos/negotiate_kerberos_pac.cc
@@ -245,8 +245,8 @@ getdomaingids(char *ad_groups, uint32_t
             base64_encode_init(&ctx);
             const uint32_t expectedSz = base64_encode_len(length+4) +1 /* terminator */;
             char *b64buf = static_cast<char *>(xcalloc(expectedSz, 1));
-            size_t blen = base64_encode_update(&ctx, b64buf, length+4, reinterpret_cast<uint8_t*>(ag));
-            blen += base64_encode_final(&ctx, b64buf+blen);
+            size_t blen = base64_encode_update(&ctx, (uint8_t*)b64buf, length+4, reinterpret_cast<uint8_t*>(ag));
+            blen += base64_encode_final(&ctx, (uint8_t*)b64buf+blen);
             b64buf[expectedSz-1] = '\0';
             if (!pstrcat(ad_groups, b64buf)) {
                 debug((char *) "%s| %s: WARN: Too many groups ! size > %d : %s\n",
@@ -334,8 +334,8 @@ getextrasids(char *ad_groups, uint32_t E
                 base64_encode_init(&ctx);
                 const uint32_t expectedSz = base64_encode_len(length) +1 /* terminator */;
                 char *b64buf = static_cast<char *>(xcalloc(expectedSz, 1));
-                size_t blen = base64_encode_update(&ctx, b64buf, length, reinterpret_cast<uint8_t*>(ag));
-                blen += base64_encode_final(&ctx, b64buf+blen);
+                size_t blen = base64_encode_update(&ctx, (uint8_t*)b64buf, length, reinterpret_cast<uint8_t*>(ag));
+                blen += base64_encode_final(&ctx, (uint8_t*)b64buf+blen);
                 b64buf[expectedSz-1] = '\0';
                 if (!pstrcat(ad_groups, reinterpret_cast<char*>(b64buf))) {
                     debug((char *) "%s| %s: WARN: Too many groups ! size > %d : %s\n",
Index: squid-4.8/src/adaptation/icap/ModXact.cc
===================================================================
--- squid-4.8.orig/src/adaptation/icap/ModXact.cc
+++ squid-4.8/src/adaptation/icap/ModXact.cc
@@ -1369,10 +1369,10 @@ void Adaptation::Icap::ModXact::makeRequ
         struct base64_encode_ctx ctx;
         base64_encode_init(&ctx);
         char base64buf[base64_encode_len(MAX_LOGIN_SZ)];
-        size_t resultLen = base64_encode_update(&ctx, base64buf, request->extacl_user.size(), reinterpret_cast<const uint8_t*>(request->extacl_user.rawBuf()));
-        resultLen += base64_encode_update(&ctx, base64buf+resultLen, 1, reinterpret_cast<const uint8_t*>(":"));
-        resultLen += base64_encode_update(&ctx, base64buf+resultLen, request->extacl_passwd.size(), reinterpret_cast<const uint8_t*>(request->extacl_passwd.rawBuf()));
-        resultLen += base64_encode_final(&ctx, base64buf+resultLen);
+        size_t resultLen = base64_encode_update(&ctx, (uint8_t*)base64buf, request->extacl_user.size(), reinterpret_cast<const uint8_t*>(request->extacl_user.rawBuf()));
+        resultLen += base64_encode_update(&ctx, (uint8_t*)base64buf+resultLen, 1, reinterpret_cast<const uint8_t*>(":"));
+        resultLen += base64_encode_update(&ctx, (uint8_t*)base64buf+resultLen, request->extacl_passwd.size(), reinterpret_cast<const uint8_t*>(request->extacl_passwd.rawBuf()));
+        resultLen += base64_encode_final(&ctx, (uint8_t*)base64buf+resultLen);
         buf.appendf("Proxy-Authorization: Basic %.*s\r\n", (int)resultLen, base64buf);
     }
 
@@ -1529,8 +1529,8 @@ void Adaptation::Icap::ModXact::makeUser
     if (value) {
         if (TheConfig.client_username_encode) {
             char base64buf[base64_encode_len(MAX_LOGIN_SZ)];
-            size_t resultLen = base64_encode_update(&ctx, base64buf, strlen(value), reinterpret_cast<const uint8_t*>(value));
-            resultLen += base64_encode_final(&ctx, base64buf+resultLen);
+            size_t resultLen = base64_encode_update(&ctx, (uint8_t*)base64buf, strlen(value), reinterpret_cast<const uint8_t*>(value));
+            resultLen += base64_encode_final(&ctx, (uint8_t*)base64buf+resultLen);
             buf.appendf("%s: %.*s\r\n", TheConfig.client_username_header, (int)resultLen, base64buf);
         } else
             buf.appendf("%s: %s\r\n", TheConfig.client_username_header, value);
Index: squid-4.8/src/http.cc
===================================================================
--- squid-4.8.orig/src/http.cc
+++ squid-4.8/src/http.cc
@@ -1697,9 +1697,9 @@ httpFixupAuthentication(HttpRequest * re
             username = request->auth_user_request->username();
 #endif
 
-        blen = base64_encode_update(&ctx, loginbuf, strlen(username), reinterpret_cast<const uint8_t*>(username));
-        blen += base64_encode_update(&ctx, loginbuf+blen, strlen(request->peer_login +1), reinterpret_cast<const uint8_t*>(request->peer_login +1));
-        blen += base64_encode_final(&ctx, loginbuf+blen);
+        blen = base64_encode_update(&ctx, (uint8_t*)loginbuf, strlen(username), reinterpret_cast<const uint8_t*>(username));
+        blen += base64_encode_update(&ctx, (uint8_t*)loginbuf+blen, strlen(request->peer_login +1), reinterpret_cast<const uint8_t*>(request->peer_login +1));
+        blen += base64_encode_final(&ctx, (uint8_t*)loginbuf+blen);
         httpHeaderPutStrf(hdr_out, header, "Basic %.*s", (int)blen, loginbuf);
         return;
     }
@@ -1709,10 +1709,10 @@ httpFixupAuthentication(HttpRequest * re
             (strcmp(request->peer_login, "PASS") == 0 ||
              strcmp(request->peer_login, "PROXYPASS") == 0)) {
 
-        blen = base64_encode_update(&ctx, loginbuf, request->extacl_user.size(), reinterpret_cast<const uint8_t*>(request->extacl_user.rawBuf()));
-        blen += base64_encode_update(&ctx, loginbuf+blen, 1, reinterpret_cast<const uint8_t*>(":"));
-        blen += base64_encode_update(&ctx, loginbuf+blen, request->extacl_passwd.size(), reinterpret_cast<const uint8_t*>(request->extacl_passwd.rawBuf()));
-        blen += base64_encode_final(&ctx, loginbuf+blen);
+        blen = base64_encode_update(&ctx, (uint8_t*)loginbuf, request->extacl_user.size(), reinterpret_cast<const uint8_t*>(request->extacl_user.rawBuf()));
+        blen += base64_encode_update(&ctx, (uint8_t*)loginbuf+blen, 1, reinterpret_cast<const uint8_t*>(":"));
+        blen += base64_encode_update(&ctx, (uint8_t*)loginbuf+blen, request->extacl_passwd.size(), reinterpret_cast<const uint8_t*>(request->extacl_passwd.rawBuf()));
+        blen += base64_encode_final(&ctx, (uint8_t*)loginbuf+blen);
         httpHeaderPutStrf(hdr_out, header, "Basic %.*s", (int)blen, loginbuf);
         return;
     }
@@ -1741,8 +1741,8 @@ httpFixupAuthentication(HttpRequest * re
     }
 #endif /* HAVE_KRB5 && HAVE_GSSAPI */
 
-    blen = base64_encode_update(&ctx, loginbuf, strlen(request->peer_login), reinterpret_cast<const uint8_t*>(request->peer_login));
-    blen += base64_encode_final(&ctx, loginbuf+blen);
+    blen = base64_encode_update(&ctx, (uint8_t*)loginbuf, strlen(request->peer_login), reinterpret_cast<const uint8_t*>(request->peer_login));
+    blen += base64_encode_final(&ctx, (uint8_t*)loginbuf+blen);
     httpHeaderPutStrf(hdr_out, header, "Basic %.*s", (int)blen, loginbuf);
     return;
 }
@@ -1869,8 +1869,8 @@ HttpStateData::httpBuildRequestHeader(Ht
             static char result[base64_encode_len(MAX_URL*2)]; // should be big enough for a single URI segment
             struct base64_encode_ctx ctx;
             base64_encode_init(&ctx);
-            size_t blen = base64_encode_update(&ctx, result, request->url.userInfo().length(), reinterpret_cast<const uint8_t*>(request->url.userInfo().rawContent()));
-            blen += base64_encode_final(&ctx, result+blen);
+            size_t blen = base64_encode_update(&ctx, (uint8_t*)result, request->url.userInfo().length(), reinterpret_cast<const uint8_t*>(request->url.userInfo().rawContent()));
+            blen += base64_encode_final(&ctx, (uint8_t*)result+blen);
             result[blen] = '\0';
             if (blen)
                 httpHeaderPutStrf(hdr_out, Http::HdrType::AUTHORIZATION, "Basic %.*s", (int)blen, result);
Index: squid-4.8/src/peer_proxy_negotiate_auth.cc
===================================================================
--- squid-4.8.orig/src/peer_proxy_negotiate_auth.cc
+++ squid-4.8/src/peer_proxy_negotiate_auth.cc
@@ -562,8 +562,8 @@ char *peer_proxy_negotiate_auth(char *pr
         static char b64buf[8192]; // XXX: 8KB only because base64_encode_bin() used to.
         struct base64_encode_ctx ctx;
         base64_encode_init(&ctx);
-        size_t blen = base64_encode_update(&ctx, b64buf, output_token.length, reinterpret_cast<const uint8_t*>(output_token.value));
-        blen += base64_encode_final(&ctx, b64buf+blen);
+        size_t blen = base64_encode_update(&ctx, (uint8_t*)b64buf, output_token.length, reinterpret_cast<const uint8_t*>(output_token.value));
+        blen += base64_encode_final(&ctx, (uint8_t*)b64buf+blen);
         b64buf[blen] = '\0';
 
         token = reinterpret_cast<char*>(b64buf);
Index: squid-4.8/tools/squidclient/gssapi_support.cc
===================================================================
--- squid-4.8.orig/tools/squidclient/gssapi_support.cc
+++ squid-4.8/tools/squidclient/gssapi_support.cc
@@ -134,8 +134,8 @@ GSSAPI_token(const char *server)
             token = new char[base64_encode_len(output_token.length)];
             struct base64_encode_ctx ctx;
             base64_encode_init(&ctx);
-            size_t blen = base64_encode_update(&ctx, token, output_token.length, reinterpret_cast<const uint8_t*>(output_token.value));
-            blen += base64_encode_final(&ctx, token+blen);
+            size_t blen = base64_encode_update(&ctx, (uint8_t*)token, output_token.length, reinterpret_cast<const uint8_t*>(output_token.value));
+            blen += base64_encode_final(&ctx, (uint8_t*)token+blen);
             token[blen] = '\0';
         }
     }
Index: squid-4.8/tools/squidclient/squidclient.cc
===================================================================
--- squid-4.8.orig/tools/squidclient/squidclient.cc
+++ squid-4.8/tools/squidclient/squidclient.cc
@@ -212,10 +212,10 @@ Authorization::commit(std::ostream &os)
     const auto buf = new char[bcapacity];
 
     size_t bsize = 0;
-    bsize += base64_encode_update(&ctx, buf, strlen(user), reinterpret_cast<const uint8_t*>(user));
-    bsize += base64_encode_update(&ctx, buf+bsize, 1, reinterpret_cast<const uint8_t*>(":"));
-    bsize += base64_encode_update(&ctx, buf+bsize, strlen(password), reinterpret_cast<const uint8_t*>(password));
-    bsize += base64_encode_final(&ctx, buf+bsize);
+    bsize += base64_encode_update(&ctx, (uint8_t*)buf, strlen(user), reinterpret_cast<const uint8_t*>(user));
+    bsize += base64_encode_update(&ctx, (uint8_t*)buf+bsize, 1, reinterpret_cast<const uint8_t*>(":"));
+    bsize += base64_encode_update(&ctx, (uint8_t*)buf+bsize, strlen(password), reinterpret_cast<const uint8_t*>(password));
+    bsize += base64_encode_final(&ctx, (uint8_t*)buf+bsize);
     assert(bsize <= bcapacity); // paranoid and late but better than nothing
 
     os << header << ": Basic ";