Removing NSS files and USE_OPENSSL flag

net/third_party/nss/ssl/ssl3gthr.c

Index: net/third_party/nss/ssl/ssl3gthr.c
diff --git a/net/third_party/nss/ssl/ssl3gthr.c b/net/third_party/nss/ssl/ssl3gthr.c
deleted file mode 100644
index ea277135d4a73bafc36c5fd93470839a7e821108..0000000000000000000000000000000000000000
--- a/net/third_party/nss/ssl/ssl3gthr.c
+++ /dev/null
@@ -1,458 +0,0 @@
-/*
- * Gather (Read) entire SSL3 records from socket into buffer.
- *
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "cert.h"
-#include "ssl.h"
-#include "sslimpl.h"
-#include "ssl3prot.h"
-
-/*
- * Attempt to read in an entire SSL3 record.
- * Blocks here for blocking sockets, otherwise returns -1 with
- *  PR_WOULD_BLOCK_ERROR when socket would block.
- *
- * returns  1 if received a complete SSL3 record.
- * returns  0 if recv returns EOF
- * returns -1 if recv returns < 0
- *  (The error value may have already been set to PR_WOULD_BLOCK_ERROR)
- *
- * Caller must hold the recv buf lock.
- *
- * The Gather state machine has 3 states:  GS_INIT, GS_HEADER, GS_DATA.
- * GS_HEADER: waiting for the 5-byte SSL3 record header to come in.
- * GS_DATA:   waiting for the body of the SSL3 record   to come in.
- *
- * This loop returns when either
- *      (a) an error or EOF occurs,
- *  (b) PR_WOULD_BLOCK_ERROR,
- *  (c) data (entire SSL3 record) has been received.
- */
-static int
-ssl3_GatherData(sslSocket *ss, sslGather *gs, int flags)
-{
-    unsigned char *bp;
-    unsigned char *lbp;
-    int nb;
-    int err;
-    int rv = 1;
-
-    PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
-    if (gs->state == GS_INIT) {
-        gs->state = GS_HEADER;
-        gs->remainder = 5;
-        gs->offset = 0;
-        gs->writeOffset = 0;
-        gs->readOffset = 0;
-        gs->inbuf.len = 0;
-    }
-
-    lbp = gs->inbuf.buf;
-    for (;;) {
-        SSL_TRC(30, ("%d: SSL3[%d]: gather state %d (need %d more)",
-                     SSL_GETPID(), ss->fd, gs->state, gs->remainder));
-        bp = ((gs->state != GS_HEADER) ? lbp : gs->hdr) + gs->offset;
-        nb = ssl_DefRecv(ss, bp, gs->remainder, flags);
-
-        if (nb > 0) {
-            PRINT_BUF(60, (ss, "raw gather data:", bp, nb));
-        } else if (nb == 0) {
-            /* EOF */
-            SSL_TRC(30, ("%d: SSL3[%d]: EOF", SSL_GETPID(), ss->fd));
-            rv = 0;
-            break;
-        } else /* if (nb < 0) */ {
-            SSL_DBG(("%d: SSL3[%d]: recv error %d", SSL_GETPID(), ss->fd,
-                     PR_GetError()));
-            rv = SECFailure;
-            break;
-        }
-
-        PORT_Assert((unsigned int)nb <= gs->remainder);
-        if ((unsigned int)nb > gs->remainder) {
-            /* ssl_DefRecv is misbehaving!  this error is fatal to SSL. */
-            gs->state = GS_INIT; /* so we don't crash next time */
-            rv = SECFailure;
-            break;
-        }
-
-        gs->offset += nb;
-        gs->remainder -= nb;
-        if (gs->state == GS_DATA)
-            gs->inbuf.len += nb;
-
-        /* if there's more to go, read some more. */
-        if (gs->remainder > 0) {
-            continue;
-        }
-
-        /* have received entire record header, or entire record. */
-        switch (gs->state) {
-            case GS_HEADER:
-              /*
-              ** Have received SSL3 record header in gs->hdr.
-              ** Now extract the length of the following encrypted data,
-              ** and then read in the rest of the SSL3 record into gs->inbuf.
-              */
-                gs->remainder = (gs->hdr[3] << 8) | gs->hdr[4];
-
-                /* This is the max fragment length for an encrypted fragment
-                ** plus the size of the record header.
-                */
-                if (gs->remainder > (MAX_FRAGMENT_LENGTH + 2048 + 5)) {
-                    SSL3_SendAlert(ss, alert_fatal, unexpected_message);
-                    gs->state = GS_INIT;
-                    PORT_SetError(SSL_ERROR_RX_RECORD_TOO_LONG);
-                    return SECFailure;
-                }
-
-                gs->state = GS_DATA;
-                gs->offset = 0;
-                gs->inbuf.len = 0;
-
-                if (gs->remainder > gs->inbuf.space) {
-                    err = sslBuffer_Grow(&gs->inbuf, gs->remainder);
-                    if (err) { /* realloc has set error code to no mem. */
-                        return err;
-                    }
-                    lbp = gs->inbuf.buf;
-                }
-                break; /* End this case.  Continue around the loop. */
-
-            case GS_DATA:
-                /*
-                ** SSL3 record has been completely received.
-                */
-                gs->state = GS_INIT;
-                return 1;
-        }
-    }
-
-    return rv;
-}
-
-/*
- * Read in an entire DTLS record.
- *
- * Blocks here for blocking sockets, otherwise returns -1 with
- *  PR_WOULD_BLOCK_ERROR when socket would block.
- *
- * This is simpler than SSL because we are reading on a datagram socket
- * and datagrams must contain >=1 complete records.
- *
- * returns  1 if received a complete DTLS record.
- * returns  0 if recv returns EOF
- * returns -1 if recv returns < 0
- *  (The error value may have already been set to PR_WOULD_BLOCK_ERROR)
- *
- * Caller must hold the recv buf lock.
- *
- * This loop returns when either
- *      (a) an error or EOF occurs,
- *  (b) PR_WOULD_BLOCK_ERROR,
- *  (c) data (entire DTLS record) has been received.
- */
-static int
-dtls_GatherData(sslSocket *ss, sslGather *gs, int flags)
-{
-    int nb;
-    int err;
-    int rv = 1;
-
-    SSL_TRC(30, ("dtls_GatherData"));
-
-    PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
-
-    gs->state = GS_HEADER;
-    gs->offset = 0;
-
-    if (gs->dtlsPacketOffset == gs->dtlsPacket.len) { /* No data left */
-        gs->dtlsPacketOffset = 0;
-        gs->dtlsPacket.len = 0;
-
-        /* Resize to the maximum possible size so we can fit a full datagram */
-        /* This is the max fragment length for an encrypted fragment
-        ** plus the size of the record header.
-        ** This magic constant is copied from ssl3_GatherData, with 5 changed
-        ** to 13 (the size of the record header).
-        */
-        if (gs->dtlsPacket.space < MAX_FRAGMENT_LENGTH + 2048 + 13) {
-            err = sslBuffer_Grow(&gs->dtlsPacket,
-                                 MAX_FRAGMENT_LENGTH + 2048 + 13);
-            if (err) { /* realloc has set error code to no mem. */
-                return err;
-            }
-        }
-
-        /* recv() needs to read a full datagram at a time */
-        nb = ssl_DefRecv(ss, gs->dtlsPacket.buf, gs->dtlsPacket.space, flags);
-
-        if (nb > 0) {
-            PRINT_BUF(60, (ss, "raw gather data:", gs->dtlsPacket.buf, nb));
-        } else if (nb == 0) {
-            /* EOF */
-            SSL_TRC(30, ("%d: SSL3[%d]: EOF", SSL_GETPID(), ss->fd));
-            rv = 0;
-            return rv;
-        } else /* if (nb < 0) */ {
-            SSL_DBG(("%d: SSL3[%d]: recv error %d", SSL_GETPID(), ss->fd,
-                     PR_GetError()));
-            rv = SECFailure;
-            return rv;
-        }
-
-        gs->dtlsPacket.len = nb;
-    }
-
-    /* At this point we should have >=1 complete records lined up in
-     * dtlsPacket. Read off the header.
-     */
-    if ((gs->dtlsPacket.len - gs->dtlsPacketOffset) < 13) {
-        SSL_DBG(("%d: SSL3[%d]: rest of DTLS packet "
-                 "too short to contain header",
-                 SSL_GETPID(), ss->fd));
-        PR_SetError(PR_WOULD_BLOCK_ERROR, 0);
-        gs->dtlsPacketOffset = 0;
-        gs->dtlsPacket.len = 0;
-        rv = SECFailure;
-        return rv;
-    }
-    memcpy(gs->hdr, gs->dtlsPacket.buf + gs->dtlsPacketOffset, 13);
-    gs->dtlsPacketOffset += 13;
-
-    /* Have received SSL3 record header in gs->hdr. */
-    gs->remainder = (gs->hdr[11] << 8) | gs->hdr[12];
-
-    if ((gs->dtlsPacket.len - gs->dtlsPacketOffset) < gs->remainder) {
-        SSL_DBG(("%d: SSL3[%d]: rest of DTLS packet too short "
-                 "to contain rest of body",
-                 SSL_GETPID(), ss->fd));
-        PR_SetError(PR_WOULD_BLOCK_ERROR, 0);
-        gs->dtlsPacketOffset = 0;
-        gs->dtlsPacket.len = 0;
-        rv = SECFailure;
-        return rv;
-    }
-
-    /* OK, we have at least one complete packet, copy into inbuf */
-    if (gs->remainder > gs->inbuf.space) {
-        err = sslBuffer_Grow(&gs->inbuf, gs->remainder);
-        if (err) { /* realloc has set error code to no mem. */
-            return err;
-        }
-    }
-
-    memcpy(gs->inbuf.buf, gs->dtlsPacket.buf + gs->dtlsPacketOffset,
-           gs->remainder);
-    gs->inbuf.len = gs->remainder;
-    gs->offset = gs->remainder;
-    gs->dtlsPacketOffset += gs->remainder;
-    gs->state = GS_INIT;
-
-    return 1;
-}
-
-/* Gather in a record and when complete, Handle that record.
- * Repeat this until the handshake is complete,
- * or until application data is available.
- *
- * Returns  1 when the handshake is completed without error, or
- *                 application data is available.
- * Returns  0 if ssl3_GatherData hits EOF.
- * Returns -1 on read error, or PR_WOULD_BLOCK_ERROR, or handleRecord error.
- * Returns -2 on SECWouldBlock return from ssl3_HandleRecord.
- *
- * Called from ssl_GatherRecord1stHandshake       in sslcon.c,
- *    and from SSL_ForceHandshake in sslsecur.c
- *    and from ssl3_GatherAppDataRecord below (<- DoRecv in sslsecur.c).
- *
- * Caller must hold the recv buf lock.
- */
-int
-ssl3_GatherCompleteHandshake(sslSocket *ss, int flags)
-{
-    SSL3Ciphertext cText;
-    int rv;
-    PRBool keepGoing = PR_TRUE;
-
-    SSL_TRC(30, ("ssl3_GatherCompleteHandshake"));
-
-    /* ssl3_HandleRecord may end up eventually calling ssl_FinishHandshake,
-     * which requires the 1stHandshakeLock, which must be acquired before the
-     * RecvBufLock.
-     */
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-    PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
-
-    do {
-        PRBool handleRecordNow = PR_FALSE;
-
-        ssl_GetSSL3HandshakeLock(ss);
-
-        /* 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.
-         */
-        if (ss->ssl3.hs.restartTarget) {
-            ssl_ReleaseSSL3HandshakeLock(ss);
-            PORT_SetError(PR_WOULD_BLOCK_ERROR);
-            return (int)SECFailure;
-        }
-
-        /* Treat an empty msgState like a NULL msgState. (Most of the time
-         * when ssl3_HandleHandshake returns SECWouldBlock, it leaves
-         * behind a non-NULL but zero-length msgState).
-         * Test: async_cert_restart_server_sends_hello_request_first_in_separate_record
-         */
-        if (ss->ssl3.hs.msgState.buf) {
-            if (ss->ssl3.hs.msgState.len == 0) {
-                ss->ssl3.hs.msgState.buf = NULL;
-            } else {
-                handleRecordNow = PR_TRUE;
-            }
-        }
-
-        ssl_ReleaseSSL3HandshakeLock(ss);
-
-        if (handleRecordNow) {
-            /* ssl3_HandleHandshake previously returned SECWouldBlock and the
-             * as-yet-unprocessed plaintext of that previous handshake record.
-             * We need to process it now before we overwrite it with the next
-             * handshake record.
-             */
-            rv = ssl3_HandleRecord(ss, NULL, &ss->gs.buf);
-        } else {
-            /* bring in the next sslv3 record. */
-            if (ss->recvdCloseNotify) {
-                /* RFC 5246 Section 7.2.1:
-                 *   Any data received after a closure alert is ignored.
-                 */
-                return 0;
-            }
-            if (!IS_DTLS(ss)) {
-                rv = ssl3_GatherData(ss, &ss->gs, flags);
-            } else {
-                rv = dtls_GatherData(ss, &ss->gs, flags);
-
-                /* If we got a would block error, that means that no data was
-                 * available, so we check the timer to see if it's time to
-                 * retransmit */
-                if (rv == SECFailure &&
-                    (PORT_GetError() == PR_WOULD_BLOCK_ERROR)) {
-                    ssl_GetSSL3HandshakeLock(ss);
-                    dtls_CheckTimer(ss);
-                    ssl_ReleaseSSL3HandshakeLock(ss);
-                    /* Restore the error in case something succeeded */
-                    PORT_SetError(PR_WOULD_BLOCK_ERROR);
-                }
-            }
-
-            if (rv <= 0) {
-                return rv;
-            }
-
-            /* decipher it, and handle it if it's a handshake.
-             * If it's application data, ss->gs.buf will not be empty upon return.
-             * 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 (IS_DTLS(ss)) {
-                int i;
-
-                cText.version = dtls_DTLSVersionToTLSVersion(cText.version);
-                /* DTLS sequence number */
-                cText.seq_num.high = 0;
-                cText.seq_num.low = 0;
-                for (i = 0; i < 4; i++) {
-                    cText.seq_num.high <<= 8;
-                    cText.seq_num.low <<= 8;
-                    cText.seq_num.high |= ss->gs.hdr[3 + i];
-                    cText.seq_num.low |= ss->gs.hdr[7 + i];
-                }
-            }
-
-            cText.buf = &ss->gs.inbuf;
-            rv = ssl3_HandleRecord(ss, &cText, &ss->gs.buf);
-        }
-        if (rv < 0) {
-            return ss->recvdCloseNotify ? 0 : rv;
-        }
-        if (ss->gs.buf.len > 0) {
-            /* We have application data to return to the application. This
-             * prioritizes returning application data to the application over
-             * completing any renegotiation handshake we may be doing.
-             */
-            PORT_Assert(ss->firstHsDone);
-            PORT_Assert(cText.type == content_application_data);
-            break;
-        }
-
-        PORT_Assert(keepGoing);
-        ssl_GetSSL3HandshakeLock(ss);
-        if (ss->ssl3.hs.ws == idle_handshake) {
-            /* We are done with the current handshake so stop trying to
-             * handshake. Note that it would be safe to test ss->firstHsDone
-             * instead of ss->ssl3.hs.ws. By testing ss->ssl3.hs.ws instead,
-             * we prioritize completing a renegotiation handshake over sending
-             * application data.
-             */
-            PORT_Assert(ss->firstHsDone);
-            PORT_Assert(!ss->ssl3.hs.canFalseStart);
-            keepGoing = PR_FALSE;
-        } else if (ss->ssl3.hs.canFalseStart) {
-            /* Prioritize sending application data over trying to complete
-             * the handshake if we're false starting.
-             *
-             * If we were to do this check at the beginning of the loop instead
-             * of here, then this function would become be a no-op after
-             * receiving the ServerHelloDone in the false start case, and we
-             * would never complete the handshake.
-             */
-            PORT_Assert(!ss->firstHsDone);
-
-            if (ssl3_WaitingForServerSecondRound(ss)) {
-                keepGoing = PR_FALSE;
-            } else {
-                ss->ssl3.hs.canFalseStart = PR_FALSE;
-            }
-        }
-        ssl_ReleaseSSL3HandshakeLock(ss);
-    } while (keepGoing);
-
-    ss->gs.readOffset = 0;
-    ss->gs.writeOffset = ss->gs.buf.len;
-    return 1;
-}
-
-/* Repeatedly gather in a record and when complete, Handle that record.
- * Repeat this until some application data is received.
- *
- * Returns  1 when application data is available.
- * Returns  0 if ssl3_GatherData hits EOF.
- * Returns -1 on read error, or PR_WOULD_BLOCK_ERROR, or handleRecord error.
- * Returns -2 on SECWouldBlock return from ssl3_HandleRecord.
- *
- * Called from DoRecv in sslsecur.c
- * Caller must hold the recv buf lock.
- */
-int
-ssl3_GatherAppDataRecord(sslSocket *ss, int flags)
-{
-    int rv;
-
-    /* ssl3_GatherCompleteHandshake requires both of these locks. */
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-    PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
-
-    do {
-        rv = ssl3_GatherCompleteHandshake(ss, flags);
-    } while (rv > 0 && ss->gs.buf.len == 0);
-
-    return rv;
-}