From fba28f19754f62b5227650143d5441fc86d4c7d7 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Wed, 25 Apr 2018 21:33:33 +0200
Subject: Revert "Update NSS to 3.35-RTM"

This reverts commit f1a0f0a56fdd0fc39f255174ce08c06b91c66c94.
---
 security/nss/lib/ssl/ssl3gthr.c | 50 ++++++++++++++++++++---------------------
 1 file changed, 25 insertions(+), 25 deletions(-)

(limited to 'security/nss/lib/ssl/ssl3gthr.c')

diff --git a/security/nss/lib/ssl/ssl3gthr.c b/security/nss/lib/ssl/ssl3gthr.c
index 20404f4da..cf6f4cb33 100644
--- a/security/nss/lib/ssl/ssl3gthr.c
+++ b/security/nss/lib/ssl/ssl3gthr.c
@@ -1,4 +1,3 @@
-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /*
  * Gather (Read) entire SSL3 records from socket into buffer.
  *
@@ -99,7 +98,7 @@ ssl3_GatherData(sslSocket *ss, sslGather *gs, int flags, ssl2Gather *ssl2gs)
     PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
     if (gs->state == GS_INIT) {
         gs->state = GS_HEADER;
-        gs->remainder = 5;
+        gs->remainder = ss->ssl3.hs.shortHeaders ? 2 : 5;
         gs->offset = 0;
         gs->writeOffset = 0;
         gs->readOffset = 0;
@@ -157,7 +156,19 @@ ssl3_GatherData(sslSocket *ss, sslGather *gs, int flags, ssl2Gather *ssl2gs)
                     /* Should have a non-SSLv2 record header in gs->hdr. Extract
                      * the length of the following encrypted data, and then
                      * read in the rest of the record into gs->inbuf. */
-                    gs->remainder = (gs->hdr[3] << 8) | gs->hdr[4];
+                    if (ss->ssl3.hs.shortHeaders) {
+                        PRUint16 len = (gs->hdr[0] << 8) | gs->hdr[1];
+                        if (!(len & 0x8000)) {
+                            SSL_DBG(("%d: SSL3[%d]: incorrectly formatted header"));
+                            SSL3_SendAlert(ss, alert_fatal, illegal_parameter);
+                            gs->state = GS_INIT;
+                            PORT_SetError(SSL_ERROR_BAD_MAC_READ);
+                            return SECFailure;
+                        }
+                        gs->remainder = len & ~0x8000;
+                    } else {
+                        gs->remainder = (gs->hdr[3] << 8) | gs->hdr[4];
+                    }
                 } else {
                     /* Probably an SSLv2 record header. No need to handle any
                      * security escapes (gs->hdr[0] & 0x40) as we wouldn't get
@@ -350,9 +361,6 @@ dtls_GatherData(sslSocket *ss, sslGather *gs, int flags)
         }
     }
 
-    SSL_TRC(20, ("%d: SSL3[%d]: dtls gathered record type=%d len=%d",
-                 SSL_GETPID(), ss->fd, gs->hdr[0], gs->inbuf.len));
-
     memcpy(gs->inbuf.buf, gs->dtlsPacket.buf + gs->dtlsPacketOffset,
            gs->remainder);
     gs->inbuf.len = gs->remainder;
@@ -386,8 +394,7 @@ ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
     SSL3Ciphertext cText;
     PRBool keepGoing = PR_TRUE;
 
-    SSL_TRC(30, ("%d: SSL3[%d]: ssl3_GatherCompleteHandshake",
-                 SSL_GETPID(), ss->fd));
+    SSL_TRC(30, ("ssl3_GatherCompleteHandshake"));
 
     /* ssl3_HandleRecord may end up eventually calling ssl_FinishHandshake,
      * which requires the 1stHandshakeLock, which must be acquired before the
@@ -398,12 +405,9 @@ ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
 
     do {
         PRBool handleRecordNow = PR_FALSE;
-        PRBool processingEarlyData;
 
         ssl_GetSSL3HandshakeLock(ss);
 
-        processingEarlyData = ss->ssl3.hs.zeroRttState == ssl_0rtt_accepted;
-
         /* Without this, we may end up wrongly reporting
          * SSL_ERROR_RX_UNEXPECTED_* errors if we receive any records from the
          * peer while we are waiting to be restarted.
@@ -489,12 +493,18 @@ ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
                  * If it's a change cipher spec, alert, or handshake message,
                  * ss->gs.buf.len will be 0 when ssl3_HandleRecord returns SECSuccess.
                  */
-                cText.type = (SSL3ContentType)ss->gs.hdr[0];
-                cText.version = (ss->gs.hdr[1] << 8) | ss->gs.hdr[2];
+                if (ss->ssl3.hs.shortHeaders) {
+                    cText.type = content_application_data;
+                    cText.version = SSL_LIBRARY_VERSION_TLS_1_0;
+                } else {
+                    cText.type = (SSL3ContentType)ss->gs.hdr[0];
+                    cText.version = (ss->gs.hdr[1] << 8) | ss->gs.hdr[2];
+                }
 
                 if (IS_DTLS(ss)) {
                     sslSequenceNumber seq_num;
 
+                    cText.version = dtls_DTLSVersionToTLSVersion(cText.version);
                     /* DTLS sequence number */
                     PORT_Memcpy(&seq_num, &ss->gs.hdr[3], sizeof(seq_num));
                     cText.seq_num = PR_ntohll(seq_num);
@@ -545,22 +555,12 @@ ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
             } else {
                 ss->ssl3.hs.canFalseStart = PR_FALSE;
             }
-        } else if (processingEarlyData &&
-                   ss->ssl3.hs.zeroRttState == ssl_0rtt_done &&
-                   !PR_CLIST_IS_EMPTY(&ss->ssl3.hs.bufferedEarlyData)) {
-            /* If we were processing early data and we are no longer, then force
-             * the handshake to block.  This ensures that early data is
-             * delivered to the application before the handshake completes. */
-            ssl_ReleaseSSL3HandshakeLock(ss);
-            PORT_SetError(PR_WOULD_BLOCK_ERROR);
-            return SECWouldBlock;
         }
         ssl_ReleaseSSL3HandshakeLock(ss);
     } while (keepGoing);
 
-    /* Service the DTLS timer so that the post-handshake timers
-     * fire. */
-    if (IS_DTLS(ss) && (ss->ssl3.hs.ws == idle_handshake)) {
+    /* Service the DTLS timer so that the holddown timer eventually fires. */
+    if (IS_DTLS(ss)) {
         dtls_CheckTimer(ss);
     }
     ss->gs.readOffset = 0;
-- 
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