Removing NSS files and USE_OPENSSL flag

net/third_party/nss/ssl/sslcon.c

-/*
- * SSL v2 handshake functions, and functions common to SSL2 and SSL3.
- *
- * 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 "nssrenam.h"
-#include "cert.h"
-#include "secitem.h"
-#include "sechash.h"
-#include "cryptohi.h" /* for SGN_ funcs */
-#include "keyhi.h"    /* for SECKEY_ high level functions. */
-#include "ssl.h"
-#include "sslimpl.h"
-#include "sslproto.h"
-#include "ssl3prot.h"
-#include "sslerr.h"
-#include "pk11func.h"
-#include "prinit.h"
-#include "prtime.h" /* for PR_Now() */
-
-static PRBool policyWasSet;
-
-#define ssl2_NUM_SUITES_IMPLEMENTED 6
-
-/* This list is sent back to the client when the client-hello message
- * contains no overlapping ciphers, so the client can report what ciphers
- * are supported by the server.  Unlike allCipherSuites (above), this list
- * is sorted by descending preference, not by cipherSuite number.
- */
-/* clang-format off */
-static const PRUint8 implementedCipherSuites[ssl2_NUM_SUITES_IMPLEMENTED * 3] = {
-    SSL_CK_RC4_128_WITH_MD5,                0x00, 0x80,
-    SSL_CK_RC2_128_CBC_WITH_MD5,            0x00, 0x80,
-    SSL_CK_DES_192_EDE3_CBC_WITH_MD5,       0x00, 0xC0,
-    SSL_CK_DES_64_CBC_WITH_MD5,             0x00, 0x40,
-    SSL_CK_RC4_128_EXPORT40_WITH_MD5,       0x00, 0x80,
-    SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5,   0x00, 0x80
-};
-
-
-typedef struct ssl2SpecsStr {
-    PRUint8 nkm; /* do this many hashes to generate key material. */
-    PRUint8 nkd; /* size of readKey and writeKey in bytes. */
-    PRUint8 blockSize;
-    PRUint8 blockShift;
-    CK_MECHANISM_TYPE mechanism;
-    PRUint8 keyLen; /* cipher symkey size in bytes. */
-    PRUint8 pubLen; /* publicly reveal this many bytes of key. */
-    PRUint8 ivLen;  /* length of IV data at *ca.    */
-} ssl2Specs;
-
-static const ssl2Specs ssl_Specs[] = {
-  /* NONE                                 */
-  { 0, 0, 0, 0 },
-  /* SSL_CK_RC4_128_WITH_MD5        */
-  { 2, 16, 1, 0, CKM_RC4,       16,   0, 0 },
-  /* SSL_CK_RC4_128_EXPORT40_WITH_MD5   */
-  { 2, 16, 1, 0, CKM_RC4,       16,  11, 0 },
-  /* SSL_CK_RC2_128_CBC_WITH_MD5        */
-  { 2, 16, 8, 3, CKM_RC2_CBC,   16,   0, 8 },
-  /* SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5   */
-  { 2, 16, 8, 3, CKM_RC2_CBC,   16,  11, 8 },
-  /* SSL_CK_IDEA_128_CBC_WITH_MD5       */
-  { 0, 0, 0, 0 },
-  /* SSL_CK_DES_64_CBC_WITH_MD5     */
-  { 1,  8, 8, 3, CKM_DES_CBC,    8,   0, 8 },
-  /* SSL_CK_DES_192_EDE3_CBC_WITH_MD5   */
-  { 3, 24, 8, 3, CKM_DES3_CBC,  24,   0, 8 },
-};
-/* clang-format on */
-
-#define SET_ERROR_CODE   /* reminder */
-#define TEST_FOR_FAILURE /* reminder */
-
-/*
-** Put a string tag in the library so that we can examine an executable
-** and see what kind of security it supports.
-*/
-const char *ssl_version = "SECURITY_VERSION:"
-                          " +us"
-                          " +export"
-#ifdef TRACE
-                          " +trace"
-#endif
-#ifdef DEBUG
-                          " +debug"
-#endif
-    ;
-
-const char *const ssl_cipherName[] = {
-    "unknown",
-    "RC4",
-    "RC4-Export",
-    "RC2-CBC",
-    "RC2-CBC-Export",
-    "IDEA-CBC",
-    "DES-CBC",
-    "DES-EDE3-CBC",
-    "unknown",
-    "unknown", /* was fortezza, NO LONGER USED */
-};
-
-/* bit-masks, showing which SSLv2 suites are allowed.
- * lsb corresponds to first cipher suite in allCipherSuites[].
- */
-static PRUint16 allowedByPolicy;         /* all off by default */
-static PRUint16 maybeAllowedByPolicy;    /* all off by default */
-static PRUint16 chosenPreference = 0xff; /* all on  by default */
-
-/* bit values for the above two bit masks */
-#define SSL_CB_RC4_128_WITH_MD5 (1 << SSL_CK_RC4_128_WITH_MD5)
-#define SSL_CB_RC4_128_EXPORT40_WITH_MD5 (1 << SSL_CK_RC4_128_EXPORT40_WITH_MD5)
-#define SSL_CB_RC2_128_CBC_WITH_MD5 (1 << SSL_CK_RC2_128_CBC_WITH_MD5)
-#define SSL_CB_RC2_128_CBC_EXPORT40_WITH_MD5 (1 << SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5)
-#define SSL_CB_IDEA_128_CBC_WITH_MD5 (1 << SSL_CK_IDEA_128_CBC_WITH_MD5)
-#define SSL_CB_DES_64_CBC_WITH_MD5 (1 << SSL_CK_DES_64_CBC_WITH_MD5)
-#define SSL_CB_DES_192_EDE3_CBC_WITH_MD5 (1 << SSL_CK_DES_192_EDE3_CBC_WITH_MD5)
-#define SSL_CB_IMPLEMENTED                  \
-    (SSL_CB_RC4_128_WITH_MD5 |              \
-     SSL_CB_RC4_128_EXPORT40_WITH_MD5 |     \
-     SSL_CB_RC2_128_CBC_WITH_MD5 |          \
-     SSL_CB_RC2_128_CBC_EXPORT40_WITH_MD5 | \
-     SSL_CB_DES_64_CBC_WITH_MD5 |           \
-     SSL_CB_DES_192_EDE3_CBC_WITH_MD5)
-
-/* Construct a socket's list of cipher specs from the global default values.
- */
-static SECStatus
-ssl2_ConstructCipherSpecs(sslSocket *ss)
-{
-    PRUint8 *cs = NULL;
-    unsigned int allowed;
-    unsigned int count;
-    int ssl3_count = 0;
-    int final_count;
-    int i;
-    SECStatus rv;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    count = 0;
-    PORT_Assert(ss != 0);
-    allowed = !ss->opt.enableSSL2 ? 0 : (ss->allowedByPolicy &
-                                         ss->chosenPreference & SSL_CB_IMPLEMENTED);
-    while (allowed) {
-        if (allowed & 1)
-            ++count;
-        allowed >>= 1;
-    }
-
-    /* Call ssl3_config_match_init() once here,
-     * instead of inside ssl3_ConstructV2CipherSpecsHack(),
-     * because the latter gets called twice below,
-     * and then again in ssl2_BeginClientHandshake().
-     */
-    ssl3_config_match_init(ss);
-
-    /* ask SSL3 how many cipher suites it has. */
-    rv = ssl3_ConstructV2CipherSpecsHack(ss, NULL, &ssl3_count);
-    if (rv < 0)
-        return rv;
-    count += ssl3_count;
-
-    /* Allocate memory to hold cipher specs */
-    if (count > 0)
-        cs = (PRUint8 *)PORT_Alloc(count * 3);
-    else
-        PORT_SetError(SSL_ERROR_SSL_DISABLED);
-    if (cs == NULL)
-        return SECFailure;
-
-    if (ss->cipherSpecs != NULL) {
-        PORT_Free(ss->cipherSpecs);
-    }
-    ss->cipherSpecs = cs;
-    ss->sizeCipherSpecs = count * 3;
-
-    /* fill in cipher specs for SSL2 cipher suites */
-    allowed = !ss->opt.enableSSL2 ? 0 : (ss->allowedByPolicy &
-                                         ss->chosenPreference & SSL_CB_IMPLEMENTED);
-    for (i = 0; i < ssl2_NUM_SUITES_IMPLEMENTED * 3; i += 3) {
-        const PRUint8 *hs = implementedCipherSuites + i;
-        int ok = allowed & (1U << hs[0]);
-        if (ok) {
-            cs[0] = hs[0];
-            cs[1] = hs[1];
-            cs[2] = hs[2];
-            cs += 3;
-        }
-    }
-
-    /* now have SSL3 add its suites onto the end */
-    rv = ssl3_ConstructV2CipherSpecsHack(ss, cs, &final_count);
-
-    /* adjust for any difference between first pass and second pass */
-    ss->sizeCipherSpecs -= (ssl3_count - final_count) * 3;
-
-    return rv;
-}
-
-/* This function is called immediately after ssl2_ConstructCipherSpecs()
-** at the beginning of a handshake.  It detects cases where a protocol
-** (e.g. SSL2 or SSL3) is logically enabled, but all its cipher suites
-** for that protocol have been disabled.  If such cases, it clears the
-** enable bit for the protocol.  If no protocols remain enabled, or
-** if no cipher suites are found, it sets the error code and returns
-** SECFailure, otherwise it returns SECSuccess.
-*/
-static SECStatus
-ssl2_CheckConfigSanity(sslSocket *ss)
-{
-    unsigned int allowed;
-    int ssl3CipherCount = 0;
-    SECStatus rv;
-
-    /* count the SSL2 and SSL3 enabled ciphers.
-     * if either is zero, clear the socket's enable for that protocol.
-     */
-    if (!ss->cipherSpecs)
-        goto disabled;
-
-    allowed = ss->allowedByPolicy & ss->chosenPreference;
-    if (!allowed)
-        ss->opt.enableSSL2 = PR_FALSE; /* not really enabled if no ciphers */
-
-    /* ssl3_config_match_init was called in ssl2_ConstructCipherSpecs(). */
-    /* Ask how many ssl3 CipherSuites were enabled. */
-    rv = ssl3_ConstructV2CipherSpecsHack(ss, NULL, &ssl3CipherCount);
-    if (rv != SECSuccess || ssl3CipherCount <= 0) {
-        /* SSL3/TLS not really enabled if no ciphers */
-        ss->vrange.min = SSL_LIBRARY_VERSION_NONE;
-        ss->vrange.max = SSL_LIBRARY_VERSION_NONE;
-    }
-
-    if (!ss->opt.enableSSL2 && SSL3_ALL_VERSIONS_DISABLED(&ss->vrange)) {
-        SSL_DBG(("%d: SSL[%d]: Can't handshake! all versions disabled.",
-                 SSL_GETPID(), ss->fd));
-    disabled:
-        PORT_SetError(SSL_ERROR_SSL_DISABLED);
-        return SECFailure;
-    }
-    return SECSuccess;
-}
-
-/*
- * Since this is a global (not per-socket) setting, we cannot use the
- * HandshakeLock to protect this.  Probably want a global lock.
- */
-SECStatus
-ssl2_SetPolicy(PRInt32 which, PRInt32 policy)
-{
-    PRUint32 bitMask;
-    SECStatus rv = SECSuccess;
-
-    which &= 0x000f;
-    bitMask = 1 << which;
-
-    if (!(bitMask & SSL_CB_IMPLEMENTED)) {
-        PORT_SetError(SSL_ERROR_UNKNOWN_CIPHER_SUITE);
-        return SECFailure;
-    }
-
-    if (policy == SSL_ALLOWED) {
-        allowedByPolicy |= bitMask;
-        maybeAllowedByPolicy |= bitMask;
-    } else if (policy == SSL_RESTRICTED) {
-        allowedByPolicy &= ~bitMask;
-        maybeAllowedByPolicy |= bitMask;
-    } else {
-        allowedByPolicy &= ~bitMask;
-        maybeAllowedByPolicy &= ~bitMask;
-    }
-    allowedByPolicy &= SSL_CB_IMPLEMENTED;
-    maybeAllowedByPolicy &= SSL_CB_IMPLEMENTED;
-
-    policyWasSet = PR_TRUE;
-    return rv;
-}
-
-SECStatus
-ssl2_GetPolicy(PRInt32 which, PRInt32 *oPolicy)
-{
-    PRUint32 bitMask;
-    PRInt32 policy;
-
-    which &= 0x000f;
-    bitMask = 1 << which;
-
-    /* Caller assures oPolicy is not null. */
-    if (!(bitMask & SSL_CB_IMPLEMENTED)) {
-        PORT_SetError(SSL_ERROR_UNKNOWN_CIPHER_SUITE);
-        *oPolicy = SSL_NOT_ALLOWED;
-        return SECFailure;
-    }
-
-    if (maybeAllowedByPolicy & bitMask) {
-        policy = (allowedByPolicy & bitMask) ? SSL_ALLOWED : SSL_RESTRICTED;
-    } else {
-        policy = SSL_NOT_ALLOWED;
-    }
-
-    *oPolicy = policy;
-    return SECSuccess;
-}
-
-/*
- * Since this is a global (not per-socket) setting, we cannot use the
- * HandshakeLock to protect this.  Probably want a global lock.
- * Called from SSL_CipherPrefSetDefault in sslsock.c
- * These changes have no effect on any sslSockets already created.
- */
-SECStatus
-ssl2_CipherPrefSetDefault(PRInt32 which, PRBool enabled)
-{
-    PRUint32 bitMask;
-
-    which &= 0x000f;
-    bitMask = 1 << which;
-
-    if (!(bitMask & SSL_CB_IMPLEMENTED)) {
-        PORT_SetError(SSL_ERROR_UNKNOWN_CIPHER_SUITE);
-        return SECFailure;
-    }
-
-    if (enabled)
-        chosenPreference |= bitMask;
-    else
-        chosenPreference &= ~bitMask;
-    chosenPreference &= SSL_CB_IMPLEMENTED;
-
-    return SECSuccess;
-}
-
-SECStatus
-ssl2_CipherPrefGetDefault(PRInt32 which, PRBool *enabled)
-{
-    PRBool rv = PR_FALSE;
-    PRUint32 bitMask;
-
-    which &= 0x000f;
-    bitMask = 1 << which;
-
-    if (!(bitMask & SSL_CB_IMPLEMENTED)) {
-        PORT_SetError(SSL_ERROR_UNKNOWN_CIPHER_SUITE);
-        *enabled = PR_FALSE;
-        return SECFailure;
-    }
-
-    rv = (PRBool)((chosenPreference & bitMask) != 0);
-    *enabled = rv;
-    return SECSuccess;
-}
-
-SECStatus
-ssl2_CipherPrefSet(sslSocket *ss, PRInt32 which, PRBool enabled)
-{
-    PRUint32 bitMask;
-
-    which &= 0x000f;
-    bitMask = 1 << which;
-
-    if (!(bitMask & SSL_CB_IMPLEMENTED)) {
-        PORT_SetError(SSL_ERROR_UNKNOWN_CIPHER_SUITE);
-        return SECFailure;
-    }
-
-    if (enabled)
-        ss->chosenPreference |= bitMask;
-    else
-        ss->chosenPreference &= ~bitMask;
-    ss->chosenPreference &= SSL_CB_IMPLEMENTED;
-
-    return SECSuccess;
-}
-
-SECStatus
-ssl2_CipherPrefGet(sslSocket *ss, PRInt32 which, PRBool *enabled)
-{
-    PRBool rv = PR_FALSE;
-    PRUint32 bitMask;
-
-    which &= 0x000f;
-    bitMask = 1 << which;
-
-    if (!(bitMask & SSL_CB_IMPLEMENTED)) {
-        PORT_SetError(SSL_ERROR_UNKNOWN_CIPHER_SUITE);
-        *enabled = PR_FALSE;
-        return SECFailure;
-    }
-
-    rv = (PRBool)((ss->chosenPreference & bitMask) != 0);
-    *enabled = rv;
-    return SECSuccess;
-}
-
-/* copy global default policy into socket. */
-void
-ssl2_InitSocketPolicy(sslSocket *ss)
-{
-    ss->allowedByPolicy = allowedByPolicy;
-    ss->maybeAllowedByPolicy = maybeAllowedByPolicy;
-    ss->chosenPreference = chosenPreference;
-}
-
-/************************************************************************/
-
-/* Called from ssl2_CreateSessionCypher(), which already holds handshake lock.
- */
-static SECStatus
-ssl2_CreateMAC(sslSecurityInfo *sec, SECItem *readKey, SECItem *writeKey,
-               int cipherChoice)
-{
-    switch (cipherChoice) {
-        case SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5:
-        case SSL_CK_RC2_128_CBC_WITH_MD5:
-        case SSL_CK_RC4_128_EXPORT40_WITH_MD5:
-        case SSL_CK_RC4_128_WITH_MD5:
-        case SSL_CK_DES_64_CBC_WITH_MD5:
-        case SSL_CK_DES_192_EDE3_CBC_WITH_MD5:
-            sec->hash = HASH_GetHashObject(HASH_AlgMD5);
-            if (SECITEM_CopyItem(0, &sec->sendSecret, writeKey) ||
-                SECITEM_CopyItem(0, &sec->rcvSecret, readKey)) {
-                return SECFailure;
-            }
-            break;
-
-        default:
-            PORT_SetError(SSL_ERROR_NO_CYPHER_OVERLAP);
-            return SECFailure;
-    }
-    sec->hashcx = (*sec->hash->create)();
-    if (sec->hashcx == NULL)
-        return SECFailure;
-    return SECSuccess;
-}
-
-/************************************************************************
- * All the Send functions below must acquire and release the socket's
- * xmitBufLock.
- */
-
-/* Called from all the Send* functions below. */
-static SECStatus
-ssl2_GetSendBuffer(sslSocket *ss, unsigned int len)
-{
-    SECStatus rv = SECSuccess;
-
-    PORT_Assert(ss->opt.noLocks || ssl_HaveXmitBufLock(ss));
-
-    if (len < 128) {
-        len = 128;
-    }
-    if (len > ss->sec.ci.sendBuf.space) {
-        rv = sslBuffer_Grow(&ss->sec.ci.sendBuf, len);
-        if (rv != SECSuccess) {
-            SSL_DBG(("%d: SSL[%d]: ssl2_GetSendBuffer failed, tried to get %d bytes",
-                     SSL_GETPID(), ss->fd, len));
-            rv = SECFailure;
-        }
-    }
-    return rv;
-}
-
-/* Called from:
- * ssl2_ClientSetupSessionCypher()  <- ssl2_HandleServerHelloMessage()
- * ssl2_HandleRequestCertificate()  <- ssl2_HandleMessage()
-                                    <- ssl_Do1stHandshake()
- * ssl2_HandleMessage()             <- ssl_Do1stHandshake()
- * ssl2_HandleServerHelloMessage()  <- ssl_Do1stHandshake()
-                                    after ssl2_BeginClientHandshake()
- * ssl2_HandleClientHelloMessage()  <- ssl_Do1stHandshake()
-                                    after ssl2_BeginServerHandshake()
- *
- * Acquires and releases the socket's xmitBufLock.
- */
-int
-ssl2_SendErrorMessage(sslSocket *ss, int error)
-{
-    int rv;
-    PRUint8 msg[SSL_HL_ERROR_HBYTES];
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    msg[0] = SSL_MT_ERROR;
-    msg[1] = MSB(error);
-    msg[2] = LSB(error);
-
-    ssl_GetXmitBufLock(ss); /***************************************/
-
-    SSL_TRC(3, ("%d: SSL[%d]: sending error %d", SSL_GETPID(), ss->fd, error));
-
-    ss->handshakeBegun = 1;
-    rv = (*ss->sec.send)(ss, msg, sizeof(msg), 0);
-    if (rv >= 0) {
-        rv = SECSuccess;
-    }
-    ssl_ReleaseXmitBufLock(ss); /***************************************/
-    return rv;
-}
-
-/* Called from ssl2_TryToFinish().
- * Acquires and releases the socket's xmitBufLock.
- */
-static SECStatus
-ssl2_SendClientFinishedMessage(sslSocket *ss)
-{
-    SECStatus rv = SECSuccess;
-    int sent;
-    PRUint8 msg[1 + SSL_CONNECTIONID_BYTES];
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ssl_GetXmitBufLock(ss); /***************************************/
-
-    if (ss->sec.ci.sentFinished == 0) {
-        ss->sec.ci.sentFinished = 1;
-
-        SSL_TRC(3, ("%d: SSL[%d]: sending client-finished",
-                    SSL_GETPID(), ss->fd));
-
-        msg[0] = SSL_MT_CLIENT_FINISHED;
-        PORT_Memcpy(msg + 1, ss->sec.ci.connectionID,
-                    sizeof(ss->sec.ci.connectionID));
-
-        DUMP_MSG(29, (ss, msg, 1 + sizeof(ss->sec.ci.connectionID)));
-        sent = (*ss->sec.send)(ss, msg, 1 + sizeof(ss->sec.ci.connectionID), 0);
-        rv = (sent >= 0) ? SECSuccess : (SECStatus)sent;
-    }
-    ssl_ReleaseXmitBufLock(ss); /***************************************/
-    return rv;
-}
-
-/* Called from
- * ssl2_HandleClientSessionKeyMessage() <- ssl2_HandleClientHelloMessage()
- * ssl2_HandleClientHelloMessage()      <- ssl_Do1stHandshake()
-                                        after ssl2_BeginServerHandshake()
- * Acquires and releases the socket's xmitBufLock.
- */
-static SECStatus
-ssl2_SendServerVerifyMessage(sslSocket *ss)
-{
-    PRUint8 *msg;
-    int sendLen;
-    int sent;
-    SECStatus rv;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ssl_GetXmitBufLock(ss); /***************************************/
-
-    sendLen = 1 + SSL_CHALLENGE_BYTES;
-    rv = ssl2_GetSendBuffer(ss, sendLen);
-    if (rv != SECSuccess) {
-        goto done;
-    }
-
-    msg = ss->sec.ci.sendBuf.buf;
-    msg[0] = SSL_MT_SERVER_VERIFY;
-    PORT_Memcpy(msg + 1, ss->sec.ci.clientChallenge, SSL_CHALLENGE_BYTES);
-
-    DUMP_MSG(29, (ss, msg, sendLen));
-    sent = (*ss->sec.send)(ss, msg, sendLen, 0);
-
-    rv = (sent >= 0) ? SECSuccess : (SECStatus)sent;
-
-done:
-    ssl_ReleaseXmitBufLock(ss); /***************************************/
-    return rv;
-}
-
-/* Called from ssl2_TryToFinish().
- * Acquires and releases the socket's xmitBufLock.
- */
-static SECStatus
-ssl2_SendServerFinishedMessage(sslSocket *ss)
-{
-    sslSessionID *sid;
-    PRUint8 *msg;
-    int sendLen, sent;
-    SECStatus rv = SECSuccess;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ssl_GetXmitBufLock(ss); /***************************************/
-
-    if (ss->sec.ci.sentFinished == 0) {
-        ss->sec.ci.sentFinished = 1;
-        PORT_Assert(ss->sec.ci.sid != 0);
-        sid = ss->sec.ci.sid;
-
-        SSL_TRC(3, ("%d: SSL[%d]: sending server-finished",
-                    SSL_GETPID(), ss->fd));
-
-        sendLen = 1 + sizeof(sid->u.ssl2.sessionID);
-        rv = ssl2_GetSendBuffer(ss, sendLen);
-        if (rv != SECSuccess) {
-            goto done;
-        }
-
-        msg = ss->sec.ci.sendBuf.buf;
-        msg[0] = SSL_MT_SERVER_FINISHED;
-        PORT_Memcpy(msg + 1, sid->u.ssl2.sessionID,
-                    sizeof(sid->u.ssl2.sessionID));
-
-        DUMP_MSG(29, (ss, msg, sendLen));
-        sent = (*ss->sec.send)(ss, msg, sendLen, 0);
-
-        if (sent < 0) {
-            /* If send failed, it is now a bogus  session-id */
-            if (ss->sec.uncache)
-                (*ss->sec.uncache)(sid);
-            rv = (SECStatus)sent;
-        } else if (!ss->opt.noCache) {
-            if (sid->cached == never_cached) {
-                (*ss->sec.cache)(sid);
-            }
-            rv = SECSuccess;
-        }
-        ssl_FreeSID(sid);
-        ss->sec.ci.sid = 0;
-    }
-done:
-    ssl_ReleaseXmitBufLock(ss); /***************************************/
-    return rv;
-}
-
-/* Called from ssl2_ClientSetupSessionCypher() <- ssl2_HandleServerHelloMessage()
- *                                             after ssl2_BeginClientHandshake()
- * Acquires and releases the socket's xmitBufLock.
- */
-static SECStatus
-ssl2_SendSessionKeyMessage(sslSocket *ss, int cipher, int keySize,
-                           PRUint8 *ca, int caLen,
-                           PRUint8 *ck, int ckLen,
-                           PRUint8 *ek, int ekLen)
-{
-    PRUint8 *msg;
-    int sendLen;
-    int sent;
-    SECStatus rv;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ssl_GetXmitBufLock(ss); /***************************************/
-
-    sendLen = SSL_HL_CLIENT_MASTER_KEY_HBYTES + ckLen + ekLen + caLen;
-    rv = ssl2_GetSendBuffer(ss, sendLen);
-    if (rv != SECSuccess)
-        goto done;
-
-    SSL_TRC(3, ("%d: SSL[%d]: sending client-session-key",
-                SSL_GETPID(), ss->fd));
-
-    msg = ss->sec.ci.sendBuf.buf;
-    msg[0] = SSL_MT_CLIENT_MASTER_KEY;
-    msg[1] = cipher;
-    msg[2] = MSB(keySize);
-    msg[3] = LSB(keySize);
-    msg[4] = MSB(ckLen);
-    msg[5] = LSB(ckLen);
-    msg[6] = MSB(ekLen);
-    msg[7] = LSB(ekLen);
-    msg[8] = MSB(caLen);
-    msg[9] = LSB(caLen);
-    PORT_Memcpy(msg + SSL_HL_CLIENT_MASTER_KEY_HBYTES, ck, ckLen);
-    PORT_Memcpy(msg + SSL_HL_CLIENT_MASTER_KEY_HBYTES + ckLen, ek, ekLen);
-    PORT_Memcpy(msg + SSL_HL_CLIENT_MASTER_KEY_HBYTES + ckLen + ekLen, ca, caLen);
-
-    DUMP_MSG(29, (ss, msg, sendLen));
-    sent = (*ss->sec.send)(ss, msg, sendLen, 0);
-    rv = (sent >= 0) ? SECSuccess : (SECStatus)sent;
-done:
-    ssl_ReleaseXmitBufLock(ss); /***************************************/
-    return rv;
-}
-
-/* Called from ssl2_TriggerNextMessage() <- ssl2_HandleMessage()
- * Acquires and releases the socket's xmitBufLock.
- */
-static SECStatus
-ssl2_SendCertificateRequestMessage(sslSocket *ss)
-{
-    PRUint8 *msg;
-    int sent;
-    int sendLen;
-    SECStatus rv;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ssl_GetXmitBufLock(ss); /***************************************/
-
-    sendLen = SSL_HL_REQUEST_CERTIFICATE_HBYTES + SSL_CHALLENGE_BYTES;
-    rv = ssl2_GetSendBuffer(ss, sendLen);
-    if (rv != SECSuccess)
-        goto done;
-
-    SSL_TRC(3, ("%d: SSL[%d]: sending certificate request",
-                SSL_GETPID(), ss->fd));
-
-    /* Generate random challenge for client to encrypt */
-    PK11_GenerateRandom(ss->sec.ci.serverChallenge, SSL_CHALLENGE_BYTES);
-
-    msg = ss->sec.ci.sendBuf.buf;
-    msg[0] = SSL_MT_REQUEST_CERTIFICATE;
-    msg[1] = SSL_AT_MD5_WITH_RSA_ENCRYPTION;
-    PORT_Memcpy(msg + SSL_HL_REQUEST_CERTIFICATE_HBYTES,
-                ss->sec.ci.serverChallenge, SSL_CHALLENGE_BYTES);
-
-    DUMP_MSG(29, (ss, msg, sendLen));
-    sent = (*ss->sec.send)(ss, msg, sendLen, 0);
-    rv = (sent >= 0) ? SECSuccess : (SECStatus)sent;
-done:
-    ssl_ReleaseXmitBufLock(ss); /***************************************/
-    return rv;
-}
-
-/* Called from ssl2_HandleRequestCertificate() <- ssl2_HandleMessage()
- * Acquires and releases the socket's xmitBufLock.
- */
-static int
-ssl2_SendCertificateResponseMessage(sslSocket *ss, SECItem *cert,
-                                    SECItem *encCode)
-{
-    PRUint8 *msg;
-    int rv, sendLen;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ssl_GetXmitBufLock(ss); /***************************************/
-
-    sendLen = SSL_HL_CLIENT_CERTIFICATE_HBYTES + encCode->len + cert->len;
-    rv = ssl2_GetSendBuffer(ss, sendLen);
-    if (rv)
-        goto done;
-
-    SSL_TRC(3, ("%d: SSL[%d]: sending certificate response",
-                SSL_GETPID(), ss->fd));
-
-    msg = ss->sec.ci.sendBuf.buf;
-    msg[0] = SSL_MT_CLIENT_CERTIFICATE;
-    msg[1] = SSL_CT_X509_CERTIFICATE;
-    msg[2] = MSB(cert->len);
-    msg[3] = LSB(cert->len);
-    msg[4] = MSB(encCode->len);
-    msg[5] = LSB(encCode->len);
-    PORT_Memcpy(msg + SSL_HL_CLIENT_CERTIFICATE_HBYTES, cert->data, cert->len);
-    PORT_Memcpy(msg + SSL_HL_CLIENT_CERTIFICATE_HBYTES + cert->len,
-                encCode->data, encCode->len);
-
-    DUMP_MSG(29, (ss, msg, sendLen));
-    rv = (*ss->sec.send)(ss, msg, sendLen, 0);
-    if (rv >= 0) {
-        rv = SECSuccess;
-    }
-done:
-    ssl_ReleaseXmitBufLock(ss); /***************************************/
-    return rv;
-}
-
-/********************************************************************
-**  Send functions above this line must aquire & release the socket's
-**  xmitBufLock.
-** All the ssl2_Send functions below this line are called vis ss->sec.send
-**  and require that the caller hold the xmitBufLock.
-*/
-
-/*
-** Called from ssl2_SendStream, ssl2_SendBlock, but not from ssl2_SendClear.
-*/
-static SECStatus
-ssl2_CalcMAC(PRUint8 *result,
-             sslSecurityInfo *sec,
-             const PRUint8 *data,
-             unsigned int dataLen,
-             unsigned int paddingLen)
-{
-    const PRUint8 *secret = sec->sendSecret.data;
-    unsigned int secretLen = sec->sendSecret.len;
-    unsigned long sequenceNumber = sec->sendSequence;
-    unsigned int nout;
-    PRUint8 seq[4];
-    PRUint8 padding[32]; /* XXX max blocksize? */
-
-    if (!sec->hash || !sec->hash->length)
-        return SECSuccess;
-    if (!sec->hashcx)
-        return SECFailure;
-
-    /* Reset hash function */
-    (*sec->hash->begin)(sec->hashcx);
-
-    /* Feed hash the data */
-    (*sec->hash->update)(sec->hashcx, secret, secretLen);
-    (*sec->hash->update)(sec->hashcx, data, dataLen);
-    PORT_Memset(padding, paddingLen, paddingLen);
-    (*sec->hash->update)(sec->hashcx, padding, paddingLen);
-
-    seq[0] = (PRUint8)(sequenceNumber >> 24);
-    seq[1] = (PRUint8)(sequenceNumber >> 16);
-    seq[2] = (PRUint8)(sequenceNumber >> 8);
-    seq[3] = (PRUint8)(sequenceNumber);
-
-    PRINT_BUF(60, (0, "calc-mac secret:", secret, secretLen));
-    PRINT_BUF(60, (0, "calc-mac data:", data, dataLen));
-    PRINT_BUF(60, (0, "calc-mac padding:", padding, paddingLen));
-    PRINT_BUF(60, (0, "calc-mac seq:", seq, 4));
-
-    (*sec->hash->update)(sec->hashcx, seq, 4);
-
-    /* Get result */
-    (*sec->hash->end)(sec->hashcx, result, &nout, sec->hash->length);
-
-    return SECSuccess;
-}
-
-/*
-** Maximum transmission amounts. These are tiny bit smaller than they
-** need to be (they account for the MAC length plus some padding),
-** assuming the MAC is 16 bytes long and the padding is a max of 7 bytes
-** long. This gives an additional 9 bytes of slop to work within.
-*/
-#define MAX_STREAM_CYPHER_LEN 0x7fe0
-#define MAX_BLOCK_CYPHER_LEN 0x3fe0
-
-/*
-** Send some data in the clear.
-** Package up data with the length header and send it.
-**
-** Return count of bytes successfully written, or negative number (failure).
-*/
-static PRInt32
-ssl2_SendClear(sslSocket *ss, const PRUint8 *in, PRInt32 len, PRInt32 flags)
-{
-    PRUint8 *out;
-    int rv;
-    unsigned int amount;
-    int count = 0;
-
-    PORT_Assert(ss->opt.noLocks || ssl_HaveXmitBufLock(ss));
-
-    SSL_TRC(10, ("%d: SSL[%d]: sending %d bytes in the clear",
-                 SSL_GETPID(), ss->fd, len));
-    PRINT_BUF(50, (ss, "clear data:", (PRUint8 *)in, len));
-
-    while (len) {
-        amount = PR_MIN(len, MAX_STREAM_CYPHER_LEN);
-        if (amount + 2 > ss->sec.writeBuf.space) {
-            rv = sslBuffer_Grow(&ss->sec.writeBuf, amount + 2);
-            if (rv != SECSuccess) {
-                count = rv;
-                break;
-            }
-        }
-        out = ss->sec.writeBuf.buf;
-
-        /*
-        ** Construct message.
-        */
-        out[0] = 0x80 | MSB(amount);
-        out[1] = LSB(amount);
-        PORT_Memcpy(&out[2], in, amount);
-
-        /* Now send the data */
-        rv = ssl_DefSend(ss, out, amount + 2, flags & ~ssl_SEND_FLAG_MASK);
-        if (rv < 0) {
-            if (PORT_GetError() == PR_WOULD_BLOCK_ERROR) {
-                rv = 0;
-            } else {
-                /* Return short write if some data already went out... */
-                if (count == 0)
-                    count = rv;
-                break;
-            }
-        }
-
-        if ((unsigned)rv < (amount + 2)) {
-            /* Short write.  Save the data and return. */
-            if (ssl_SaveWriteData(ss, out + rv, amount + 2 - rv) ==
-                SECFailure) {
-                count = SECFailure;
-            } else {
-                count += amount;
-                ss->sec.sendSequence++;
-            }
-            break;
-        }
-
-        ss->sec.sendSequence++;
-        in += amount;
-        count += amount;
-        len -= amount;
-    }
-
-    return count;
-}
-
-/*
-** Send some data, when using a stream cipher. Stream ciphers have a
-** block size of 1. Package up the data with the length header
-** and send it.
-*/
-static PRInt32
-ssl2_SendStream(sslSocket *ss, const PRUint8 *in, PRInt32 len, PRInt32 flags)
-{
-    PRUint8 *out;
-    int rv;
-    int count = 0;
-
-    int amount;
-    PRUint8 macLen;
-    int nout;
-    unsigned int buflen;
-
-    PORT_Assert(ss->opt.noLocks || ssl_HaveXmitBufLock(ss));
-
-    SSL_TRC(10, ("%d: SSL[%d]: sending %d bytes using stream cipher",
-                 SSL_GETPID(), ss->fd, len));
-    PRINT_BUF(50, (ss, "clear data:", (PRUint8 *)in, len));
-
-    while (len) {
-        ssl_GetSpecReadLock(ss); /*************************************/
-
-        macLen = ss->sec.hash->length;
-        amount = PR_MIN(len, MAX_STREAM_CYPHER_LEN);
-        buflen = amount + 2 + macLen;
-        if (buflen > ss->sec.writeBuf.space) {
-            rv = sslBuffer_Grow(&ss->sec.writeBuf, buflen);
-            if (rv != SECSuccess) {
-                goto loser;
-            }
-        }
-        out = ss->sec.writeBuf.buf;
-        nout = amount + macLen;
-        out[0] = 0x80 | MSB(nout);
-        out[1] = LSB(nout);
-
-        /* Calculate MAC */
-        rv = ssl2_CalcMAC(out + 2, /* put MAC here */
-                          &ss->sec,
-                          in, amount, /* input addr & length */
-                          0);         /* no padding */
-        if (rv != SECSuccess)
-            goto loser;
-
-        /* Encrypt MAC */
-        rv = (*ss->sec.enc)(ss->sec.writecx, out + 2, &nout, macLen, out + 2, macLen);
-        if (rv)
-            goto loser;
-
-        /* Encrypt data from caller */
-        rv = (*ss->sec.enc)(ss->sec.writecx, out + 2 + macLen, &nout, amount, in, amount);
-        if (rv)
-            goto loser;
-
-        ssl_ReleaseSpecReadLock(ss); /*************************************/
-
-        PRINT_BUF(50, (ss, "encrypted data:", out, buflen));
-
-        rv = ssl_DefSend(ss, out, buflen, flags & ~ssl_SEND_FLAG_MASK);
-        if (rv < 0) {
-            if (PORT_GetError() == PR_WOULD_BLOCK_ERROR) {
-                SSL_TRC(50, ("%d: SSL[%d]: send stream would block, "
-                             "saving data",
-                             SSL_GETPID(), ss->fd));
-                rv = 0;
-            } else {
-                SSL_TRC(10, ("%d: SSL[%d]: send stream error %d",
-                             SSL_GETPID(), ss->fd, PORT_GetError()));
-                /* Return short write if some data already went out... */
-                if (count == 0)
-                    count = rv;
-                goto done;
-            }
-        }
-
-        if ((unsigned)rv < buflen) {
-            /* Short write.  Save the data and return. */
-            if (ssl_SaveWriteData(ss, out + rv, buflen - rv) == SECFailure) {
-                count = SECFailure;
-            } else {
-                count += amount;
-                ss->sec.sendSequence++;
-            }
-            goto done;
-        }
-
-        ss->sec.sendSequence++;
-        in += amount;
-        count += amount;
-        len -= amount;
-    }
-
-done:
-    return count;
-
-loser:
-    ssl_ReleaseSpecReadLock(ss);
-    return SECFailure;
-}
-
-/*
-** Send some data, when using a block cipher. Package up the data with
-** the length header and send it.
-*/
-/* XXX assumes blocksize is > 7 */
-static PRInt32
-ssl2_SendBlock(sslSocket *ss, const PRUint8 *in, PRInt32 len, PRInt32 flags)
-{
-    PRUint8 *out;  /* begining of output buffer.    */
-    PRUint8 *op;   /* next output byte goes here.   */
-    int rv;        /* value from funcs we called.   */
-    int count = 0; /* this function's return value. */
-
-    unsigned int hlen;    /* output record hdr len, 2 or 3 */
-    unsigned int macLen;  /* MAC is this many bytes long.  */
-    int amount;           /* of plaintext to go in record. */
-    unsigned int padding; /* add this many padding byte.   */
-    int nout;             /* ciphertext size after header. */
-    unsigned int buflen;  /* size of generated record.     */
-
-    PORT_Assert(ss->opt.noLocks || ssl_HaveXmitBufLock(ss));
-
-    SSL_TRC(10, ("%d: SSL[%d]: sending %d bytes using block cipher",
-                 SSL_GETPID(), ss->fd, len));
-    PRINT_BUF(50, (ss, "clear data:", in, len));
-
-    while (len) {
-        ssl_GetSpecReadLock(ss); /*************************************/
-
-        macLen = ss->sec.hash->length;
-        /* Figure out how much to send, including mac and padding */
-        amount = PR_MIN(len, MAX_BLOCK_CYPHER_LEN);
-        nout = amount + macLen;
-        padding = nout & (ss->sec.blockSize - 1);
-        if (padding) {
-            hlen = 3;
-            padding = ss->sec.blockSize - padding;
-            nout += padding;
-        } else {
-            hlen = 2;
-        }
-        buflen = hlen + nout;
-        if (buflen > ss->sec.writeBuf.space) {
-            rv = sslBuffer_Grow(&ss->sec.writeBuf, buflen);
-            if (rv != SECSuccess) {
-                goto loser;
-            }
-        }
-        out = ss->sec.writeBuf.buf;
-
-        /* Construct header */
-        op = out;
-        if (padding) {
-            *op++ = MSB(nout);
-            *op++ = LSB(nout);
-            *op++ = padding;
-        } else {
-            *op++ = 0x80 | MSB(nout);
-            *op++ = LSB(nout);
-        }
-
-        /* Calculate MAC */
-        rv = ssl2_CalcMAC(op, /* MAC goes here. */
-                          &ss->sec,
-                          in, amount, /* intput addr, len */
-                          padding);
-        if (rv != SECSuccess)
-            goto loser;
-        op += macLen;
-
-        /* Copy in the input data */
-        /* XXX could eliminate the copy by folding it into the encryption */
-        PORT_Memcpy(op, in, amount);
-        op += amount;
-        if (padding) {
-            PORT_Memset(op, padding, padding);
-            op += padding;
-        }
-
-        /* Encrypt result */
-        rv = (*ss->sec.enc)(ss->sec.writecx, out + hlen, &nout, buflen - hlen,
-                            out + hlen, op - (out + hlen));
-        if (rv)
-            goto loser;
-
-        ssl_ReleaseSpecReadLock(ss); /*************************************/
-
-        PRINT_BUF(50, (ss, "final xmit data:", out, op - out));
-
-        rv = ssl_DefSend(ss, out, op - out, flags & ~ssl_SEND_FLAG_MASK);
-        if (rv < 0) {
-            if (PORT_GetError() == PR_WOULD_BLOCK_ERROR) {
-                rv = 0;
-            } else {
-                SSL_TRC(10, ("%d: SSL[%d]: send block error %d",
-                             SSL_GETPID(), ss->fd, PORT_GetError()));
-                /* Return short write if some data already went out... */
-                if (count == 0)
-                    count = rv;
-                goto done;
-            }
-        }
-
-        if (rv < (op - out)) {
-            /* Short write.  Save the data and return. */
-            if (ssl_SaveWriteData(ss, out + rv, op - out - rv) == SECFailure) {
-                count = SECFailure;
-            } else {
-                count += amount;
-                ss->sec.sendSequence++;
-            }
-            goto done;
-        }
-
-        ss->sec.sendSequence++;
-        in += amount;
-        count += amount;
-        len -= amount;
-    }
-
-done:
-    return count;
-
-loser:
-    ssl_ReleaseSpecReadLock(ss);
-    return SECFailure;
-}
-
-/*
-** Called from: ssl2_HandleServerHelloMessage,
-**              ssl2_HandleClientSessionKeyMessage,
-**              ssl2_HandleClientHelloMessage,
-**
-*/
-static void
-ssl2_UseEncryptedSendFunc(sslSocket *ss)
-{
-    ssl_GetXmitBufLock(ss);
-    PORT_Assert(ss->sec.hashcx != 0);
-
-    ss->gs.encrypted = 1;
-    ss->sec.send = (ss->sec.blockSize > 1) ? ssl2_SendBlock : ssl2_SendStream;
-    ssl_ReleaseXmitBufLock(ss);
-}
-
-/* Called while initializing socket in ssl_CreateSecurityInfo().
-** This function allows us to keep the name of ssl2_SendClear static.
-*/
-void
-ssl2_UseClearSendFunc(sslSocket *ss)
-{
-    ss->sec.send = ssl2_SendClear;
-}
-
-/************************************************************************
-**          END of Send functions.                          *
-*************************************************************************/
-
-/***********************************************************************
- * For SSL3, this gathers in and handles records/messages until either
- *  the handshake is complete or application data is available.
- *
- * For SSL2, this gathers in only the next SSLV2 record.
- *
- * Called from ssl_Do1stHandshake() via function pointer ss->handshake.
- * Caller must hold handshake lock.
- * This function acquires and releases the RecvBufLock.
- *
- * returns SECSuccess for success.
- * returns SECWouldBlock when that value is returned by ssl2_GatherRecord() or
- *  ssl3_GatherCompleteHandshake().
- * returns SECFailure on all other errors.
- *
- * The gather functions called by ssl_GatherRecord1stHandshake are expected
- *  to return values interpreted as follows:
- *  1 : the function completed without error.
- *  0 : the function read EOF.
- * -1 : read error, or PR_WOULD_BLOCK_ERROR, or handleRecord error.
- * -2 : the function wants ssl_GatherRecord1stHandshake to be called again
- *  immediately, by ssl_Do1stHandshake.
- *
- * This code is similar to, and easily confused with, DoRecv() in sslsecur.c
- *
- * This function is called from ssl_Do1stHandshake().
- * The following functions put ssl_GatherRecord1stHandshake into ss->handshake:
- *  ssl2_HandleMessage
- *  ssl2_HandleVerifyMessage
- *  ssl2_HandleServerHelloMessage
- *  ssl2_BeginClientHandshake
- *  ssl2_HandleClientSessionKeyMessage
- *  ssl3_RestartHandshakeAfterCertReq
- *  ssl3_RestartHandshakeAfterServerCert
- *  ssl2_HandleClientHelloMessage
- *  ssl2_BeginServerHandshake
- */
-SECStatus
-ssl_GatherRecord1stHandshake(sslSocket *ss)
-{
-    int rv;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ssl_GetRecvBufLock(ss);
-
-    /* The special case DTLS logic is needed here because the SSL/TLS
-     * version wants to auto-detect SSL2 vs. SSL3 on the initial handshake
-     * (ss->version == 0) but with DTLS it gets confused, so we force the
-     * SSL3 version.
-     */
-    if ((ss->version >= SSL_LIBRARY_VERSION_3_0) || IS_DTLS(ss)) {
-        /* Wait for handshake to complete, or application data to arrive.  */
-        rv = ssl3_GatherCompleteHandshake(ss, 0);
-    } else {
-        /* See if we have a complete record */
-        rv = ssl2_GatherRecord(ss, 0);
-    }
-    SSL_TRC(10, ("%d: SSL[%d]: handshake gathering, rv=%d",
-                 SSL_GETPID(), ss->fd, rv));
-
-    ssl_ReleaseRecvBufLock(ss);
-
-    if (rv <= 0) {
-        if (rv == SECWouldBlock) {
-            /* Progress is blocked waiting for callback completion.  */
-            SSL_TRC(10, ("%d: SSL[%d]: handshake blocked (need %d)",
-                         SSL_GETPID(), ss->fd, ss->gs.remainder));
-            return SECWouldBlock;
-        }
-        if (rv == 0) {
-            /* EOF. Loser  */
-            PORT_SetError(PR_END_OF_FILE_ERROR);
-        }
-        return SECFailure; /* rv is < 0 here. */
-    }
-
-    SSL_TRC(10, ("%d: SSL[%d]: got handshake record of %d bytes",
-                 SSL_GETPID(), ss->fd, ss->gs.recordLen));
-
-    ss->handshake = 0; /* makes ssl_Do1stHandshake call ss->nextHandshake.*/
-    return SECSuccess;
-}
-
-/************************************************************************/
-
-/* Called from ssl2_ServerSetupSessionCypher()
- *             ssl2_ClientSetupSessionCypher()
- */
-static SECStatus
-ssl2_FillInSID(sslSessionID *sid,
-               int cipher,
-               PRUint8 *keyData,
-               int keyLen,
-               PRUint8 *ca,
-               int caLen,
-               int keyBits,
-               int secretKeyBits,
-               SSLSignType authAlgorithm,
-               PRUint32 authKeyBits,
-               SSLKEAType keaType,
-               PRUint32 keaKeyBits)
-{
-    PORT_Assert(sid->references == 1);
-    PORT_Assert(sid->cached == never_cached);
-    PORT_Assert(sid->u.ssl2.masterKey.data == 0);
-    PORT_Assert(sid->u.ssl2.cipherArg.data == 0);
-
-    sid->version = SSL_LIBRARY_VERSION_2;
-
-    sid->u.ssl2.cipherType = cipher;
-    sid->u.ssl2.masterKey.data = (PRUint8 *)PORT_Alloc(keyLen);
-    if (!sid->u.ssl2.masterKey.data) {
-        return SECFailure;
-    }
-    PORT_Memcpy(sid->u.ssl2.masterKey.data, keyData, keyLen);
-    sid->u.ssl2.masterKey.len = keyLen;
-    sid->u.ssl2.keyBits = keyBits;
-    sid->u.ssl2.secretKeyBits = secretKeyBits;
-    sid->authAlgorithm = authAlgorithm;
-    sid->authKeyBits = authKeyBits;
-    sid->keaType = keaType;
-    sid->keaKeyBits = keaKeyBits;
-    sid->lastAccessTime = sid->creationTime = ssl_Time();
-    sid->expirationTime = sid->creationTime + ssl_sid_timeout;
-
-    if (caLen) {
-        sid->u.ssl2.cipherArg.data = (PRUint8 *)PORT_Alloc(caLen);
-        if (!sid->u.ssl2.cipherArg.data) {
-            return SECFailure;
-        }
-        sid->u.ssl2.cipherArg.len = caLen;
-        PORT_Memcpy(sid->u.ssl2.cipherArg.data, ca, caLen);
-    }
-    return SECSuccess;
-}
-
-/*
-** Construct session keys given the masterKey (tied to the session-id),
-** the client's challenge and the server's nonce.
-**
-** Called from ssl2_CreateSessionCypher() <-
-*/
-static SECStatus
-ssl2_ProduceKeys(sslSocket *ss,
-                 SECItem *readKey,
-                 SECItem *writeKey,
-                 SECItem *masterKey,
-                 PRUint8 *challenge,
-                 PRUint8 *nonce,
-                 int cipherType)
-{
-    PK11Context *cx = 0;
-    unsigned nkm = 0; /* number of hashes to generate key mat. */
-    unsigned nkd = 0; /* size of readKey and writeKey. */
-    unsigned part;
-    unsigned i;
-    unsigned off;
-    SECStatus rv;
-    PRUint8 countChar;
-    PRUint8 km[3 * 16]; /* buffer for key material. */
-
-    readKey->data = 0;
-    writeKey->data = 0;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    rv = SECSuccess;
-    cx = PK11_CreateDigestContext(SEC_OID_MD5);
-    if (cx == NULL) {
-        ssl_MapLowLevelError(SSL_ERROR_MD5_DIGEST_FAILURE);
-        return SECFailure;
-    }
-
-    nkm = ssl_Specs[cipherType].nkm;
-    nkd = ssl_Specs[cipherType].nkd;
-
-    readKey->data = (PRUint8 *)PORT_Alloc(nkd);
-    if (!readKey->data)
-        goto loser;
-    readKey->len = nkd;
-
-    writeKey->data = (PRUint8 *)PORT_Alloc(nkd);
-    if (!writeKey->data)
-        goto loser;
-    writeKey->len = nkd;
-
-    /* Produce key material */
-    countChar = '0';
-    for (i = 0, off = 0; i < nkm; i++, off += 16) {
-        rv = PK11_DigestBegin(cx);
-        rv |= PK11_DigestOp(cx, masterKey->data, masterKey->len);
-        rv |= PK11_DigestOp(cx, &countChar, 1);
-        rv |= PK11_DigestOp(cx, challenge, SSL_CHALLENGE_BYTES);
-        rv |= PK11_DigestOp(cx, nonce, SSL_CONNECTIONID_BYTES);
-        rv |= PK11_DigestFinal(cx, km + off, &part, MD5_LENGTH);
-        if (rv != SECSuccess) {
-            ssl_MapLowLevelError(SSL_ERROR_MD5_DIGEST_FAILURE);
-            rv = SECFailure;
-            goto loser;
-        }
-        countChar++;
-    }
-
-    /* Produce keys */
-    PORT_Memcpy(readKey->data, km, nkd);
-    PORT_Memcpy(writeKey->data, km + nkd, nkd);
-
-loser:
-    PK11_DestroyContext(cx, PR_TRUE);
-    return rv;
-}
-
-/* Called from ssl2_ServerSetupSessionCypher()
-**                  <- ssl2_HandleClientSessionKeyMessage()
-**                          <- ssl2_HandleClientHelloMessage()
-** and from    ssl2_ClientSetupSessionCypher()
-**                  <- ssl2_HandleServerHelloMessage()
-*/
-static SECStatus
-ssl2_CreateSessionCypher(sslSocket *ss, sslSessionID *sid, PRBool isClient)
-{
-    SECItem *rk = NULL;
-    SECItem *wk = NULL;
-    SECItem *param;
-    SECStatus rv;
-    int cipherType = sid->u.ssl2.cipherType;
-    PK11SlotInfo *slot = NULL;
-    CK_MECHANISM_TYPE mechanism;
-    SECItem readKey;
-    SECItem writeKey;
-
-    void *readcx = 0;
-    void *writecx = 0;
-    readKey.data = 0;
-    writeKey.data = 0;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-    if (ss->sec.ci.sid == 0)
-        goto sec_loser; /* don't crash if asserts are off */
-
-    /* Trying to cut down on all these switch statements that should be tables.
-     * So, test cipherType once, here, and then use tables below.
-     */
-    switch (cipherType) {
-        case SSL_CK_RC4_128_EXPORT40_WITH_MD5:
-        case SSL_CK_RC4_128_WITH_MD5:
-        case SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5:
-        case SSL_CK_RC2_128_CBC_WITH_MD5:
-        case SSL_CK_DES_64_CBC_WITH_MD5:
-        case SSL_CK_DES_192_EDE3_CBC_WITH_MD5:
-            break;
-
-        default:
-            SSL_DBG(("%d: SSL[%d]: ssl2_CreateSessionCypher: unknown cipher=%d",
-                     SSL_GETPID(), ss->fd, cipherType));
-            PORT_SetError(isClient ? SSL_ERROR_BAD_SERVER : SSL_ERROR_BAD_CLIENT);
-            goto sec_loser;
-    }
-
-    rk = isClient ? &readKey : &writeKey;
-    wk = isClient ? &writeKey : &readKey;
-
-    /* Produce the keys for this session */
-    rv = ssl2_ProduceKeys(ss, &readKey, &writeKey, &sid->u.ssl2.masterKey,
-                          ss->sec.ci.clientChallenge, ss->sec.ci.connectionID,
-                          cipherType);
-    if (rv != SECSuccess)
-        goto loser;
-    PRINT_BUF(7, (ss, "Session read-key: ", rk->data, rk->len));
-    PRINT_BUF(7, (ss, "Session write-key: ", wk->data, wk->len));
-
-    PORT_Memcpy(ss->sec.ci.readKey, readKey.data, readKey.len);
-    PORT_Memcpy(ss->sec.ci.writeKey, writeKey.data, writeKey.len);
-    ss->sec.ci.keySize = readKey.len;
-
-    /* Setup the MAC */
-    rv = ssl2_CreateMAC(&ss->sec, rk, wk, cipherType);
-    if (rv != SECSuccess)
-        goto loser;
-
-    /* First create the session key object */
-    SSL_TRC(3, ("%d: SSL[%d]: using %s", SSL_GETPID(), ss->fd,
-                ssl_cipherName[cipherType]));
-
-    mechanism = ssl_Specs[cipherType].mechanism;
-
-    /* set destructer before we call loser... */
-    ss->sec.destroy = (void (*)(void *, PRBool))PK11_DestroyContext;
-    slot = PK11_GetBestSlot(mechanism, ss->pkcs11PinArg);
-    if (slot == NULL)
-        goto loser;
-
-    param = PK11_ParamFromIV(mechanism, &sid->u.ssl2.cipherArg);
-    if (param == NULL)
-        goto loser;
-    readcx = PK11_CreateContextByRawKey(slot, mechanism, PK11_OriginUnwrap,
-                                        CKA_DECRYPT, rk, param,
-                                        ss->pkcs11PinArg);
-    SECITEM_FreeItem(param, PR_TRUE);
-    if (readcx == NULL)
-        goto loser;
-
-    /* build the client context */
-    param = PK11_ParamFromIV(mechanism, &sid->u.ssl2.cipherArg);
-    if (param == NULL)
-        goto loser;
-    writecx = PK11_CreateContextByRawKey(slot, mechanism, PK11_OriginUnwrap,
-                                         CKA_ENCRYPT, wk, param,
-                                         ss->pkcs11PinArg);
-    SECITEM_FreeItem(param, PR_TRUE);
-    if (writecx == NULL)
-        goto loser;
-    PK11_FreeSlot(slot);
-
-    rv = SECSuccess;
-    ss->sec.enc = (SSLCipher)PK11_CipherOp;
-    ss->sec.dec = (SSLCipher)PK11_CipherOp;
-    ss->sec.readcx = (void *)readcx;
-    ss->sec.writecx = (void *)writecx;
-    ss->sec.blockSize = ssl_Specs[cipherType].blockSize;
-    ss->sec.blockShift = ssl_Specs[cipherType].blockShift;
-    ss->sec.cipherType = sid->u.ssl2.cipherType;
-    ss->sec.keyBits = sid->u.ssl2.keyBits;
-    ss->sec.secretKeyBits = sid->u.ssl2.secretKeyBits;
-    goto done;
-
-loser:
-    if (ss->sec.destroy) {
-        if (readcx)
-            (*ss->sec.destroy)(readcx, PR_TRUE);
-        if (writecx)
-            (*ss->sec.destroy)(writecx, PR_TRUE);
-    }
-    ss->sec.destroy = NULL;
-    if (slot)
-        PK11_FreeSlot(slot);
-
-sec_loser:
-    rv = SECFailure;
-
-done:
-    if (rk) {
-        SECITEM_ZfreeItem(rk, PR_FALSE);
-    }
-    if (wk) {
-        SECITEM_ZfreeItem(wk, PR_FALSE);
-    }
-    return rv;
-}
-
-/*
-** Setup the server ciphers given information from a CLIENT-MASTER-KEY
-** message.
-**  "ss"      pointer to the ssl-socket object
-**  "cipher"  the cipher type to use
-**  "keyBits" the size of the final cipher key
-**  "ck"      the clear-key data
-**  "ckLen"   the number of bytes of clear-key data
-**  "ek"      the encrypted-key data
-**  "ekLen"   the number of bytes of encrypted-key data
-**  "ca"      the cipher-arg data
-**  "caLen"   the number of bytes of cipher-arg data
-**
-** The MASTER-KEY is constructed by first decrypting the encrypted-key
-** data. This produces the SECRET-KEY-DATA. The MASTER-KEY is composed by
-** concatenating the clear-key data with the SECRET-KEY-DATA. This code
-** checks to make sure that the client didn't send us an improper amount
-** of SECRET-KEY-DATA (it restricts the length of that data to match the
-** spec).
-**
-** Called from ssl2_HandleClientSessionKeyMessage().
-*/
-static SECStatus
-ssl2_ServerSetupSessionCypher(sslSocket *ss, int cipher, unsigned int keyBits,
-                              PRUint8 *ck, unsigned int ckLen,
-                              PRUint8 *ek, unsigned int ekLen,
-                              PRUint8 *ca, unsigned int caLen)
-{
-    PRUint8 *dk = NULL; /* decrypted master key */
-    sslSessionID *sid;
-    sslServerCerts *sc = ss->serverCerts + kt_rsa;
-    PRUint8 *kbuf = 0;  /* buffer for RSA decrypted data. */
-    unsigned int ddLen; /* length of RSA decrypted data in kbuf */
-    unsigned int keySize;
-    unsigned int dkLen; /* decrypted key length in bytes */
-    int modulusLen;
-    SECStatus rv;
-    PRUint16 allowed; /* cipher kinds enabled and allowed by policy */
-    PRUint8 mkbuf[SSL_MAX_MASTER_KEY_BYTES];
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-    PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
-    PORT_Assert((sc->SERVERKEY != 0));
-    PORT_Assert((ss->sec.ci.sid != 0));
-    sid = ss->sec.ci.sid;
-
-    /* Trying to cut down on all these switch statements that should be tables.
-     * So, test cipherType once, here, and then use tables below.
-     */
-    switch (cipher) {
-        case SSL_CK_RC4_128_EXPORT40_WITH_MD5:
-        case SSL_CK_RC4_128_WITH_MD5:
-        case SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5:
-        case SSL_CK_RC2_128_CBC_WITH_MD5:
-        case SSL_CK_DES_64_CBC_WITH_MD5:
-        case SSL_CK_DES_192_EDE3_CBC_WITH_MD5:
-            break;
-
-        default:
-            SSL_DBG(("%d: SSL[%d]: ssl2_ServerSetupSessionCypher: unknown cipher=%d",
-                     SSL_GETPID(), ss->fd, cipher));
-            PORT_SetError(SSL_ERROR_BAD_CLIENT);
-            goto loser;
-    }
-
-    allowed = ss->allowedByPolicy & ss->chosenPreference & SSL_CB_IMPLEMENTED;
-    if (!(allowed & (1 << cipher))) {
-        /* client chose a kind we don't allow! */
-        SSL_DBG(("%d: SSL[%d]: disallowed cipher=%d",
-                 SSL_GETPID(), ss->fd, cipher));
-        PORT_SetError(SSL_ERROR_BAD_CLIENT);
-        goto loser;
-    }
-
-    keySize = ssl_Specs[cipher].keyLen;
-    if (keyBits != keySize * BPB) {
-        SSL_DBG(("%d: SSL[%d]: invalid master secret key length=%d (bits)!",
-                 SSL_GETPID(), ss->fd, keyBits));
-        PORT_SetError(SSL_ERROR_BAD_CLIENT);
-        goto loser;
-    }
-
-    if (ckLen != ssl_Specs[cipher].pubLen) {
-        SSL_DBG(("%d: SSL[%d]: invalid clear key length, ckLen=%d (bytes)!",
-                 SSL_GETPID(), ss->fd, ckLen));
-        PORT_SetError(SSL_ERROR_BAD_CLIENT);
-        goto loser;
-    }
-
-    if (caLen != ssl_Specs[cipher].ivLen) {
-        SSL_DBG(("%d: SSL[%d]: invalid key args length, caLen=%d (bytes)!",
-                 SSL_GETPID(), ss->fd, caLen));
-        PORT_SetError(SSL_ERROR_BAD_CLIENT);
-        goto loser;
-    }
-
-    modulusLen = PK11_GetPrivateModulusLen(sc->SERVERKEY);
-    if (modulusLen < 0) {
-        /* XXX If the key is bad, then PK11_PubDecryptRaw will fail below. */
-        modulusLen = ekLen;
-    }
-    if (ekLen > (unsigned int)modulusLen || ekLen + ckLen < keySize) {
-        SSL_DBG(("%d: SSL[%d]: invalid encrypted key length, ekLen=%d (bytes)!",
-                 SSL_GETPID(), ss->fd, ekLen));
-        PORT_SetError(SSL_ERROR_BAD_CLIENT);
-        goto loser;
-    }
-
-    /* allocate the buffer to hold the decrypted portion of the key. */
-    kbuf = (PRUint8 *)PORT_Alloc(modulusLen);
-    if (!kbuf) {
-        goto loser;
-    }
-    dkLen = keySize - ckLen;
-    dk = kbuf + modulusLen - dkLen;
-
-    /* Decrypt encrypted half of the key.
-    ** NOTE: PK11_PubDecryptRaw will barf on a non-RSA key. This is
-    ** desired behavior here.
-    */
-    rv = PK11_PubDecryptRaw(sc->SERVERKEY, kbuf, &ddLen, modulusLen, ek, ekLen);
-    if (rv != SECSuccess)
-        goto hide_loser;
-
-    /* Is the length of the decrypted data (ddLen) the expected value? */
-    if (modulusLen != ddLen)
-        goto hide_loser;
-
-    /* Cheaply verify that PKCS#1 was used to format the encryption block */
-    if ((kbuf[0] != 0x00) || (kbuf[1] != 0x02) || (dk[-1] != 0x00)) {
-        SSL_DBG(("%d: SSL[%d]: strange encryption block",
-                 SSL_GETPID(), ss->fd));
-        PORT_SetError(SSL_ERROR_BAD_CLIENT);
-        goto hide_loser;
-    }
-
-    /* Make sure we're not subject to a version rollback attack. */
-    if (!SSL3_ALL_VERSIONS_DISABLED(&ss->vrange)) {
-        static const PRUint8 threes[8] = { 0x03, 0x03, 0x03, 0x03,
-                                           0x03, 0x03, 0x03, 0x03 };
-
-        if (PORT_Memcmp(dk - 8 - 1, threes, 8) == 0) {
-            PORT_SetError(SSL_ERROR_BAD_CLIENT);
-            goto hide_loser;
-        }
-    }
-    if (0) {
-    hide_loser:
-        /* Defense against the Bleichenbacher attack.
-         * Provide the client with NO CLUES that the decrypted master key
-         * was erroneous.  Don't send any error messages.
-         * Instead, Generate a completely bogus master key .
-         */
-        PK11_GenerateRandom(dk, dkLen);
-    }
-
-    /*
-    ** Construct master key out of the pieces.
-    */
-    if (ckLen) {
-        PORT_Memcpy(mkbuf, ck, ckLen);
-    }
-    PORT_Memcpy(mkbuf + ckLen, dk, dkLen);
-
-    /* Fill in session-id */
-    rv = ssl2_FillInSID(sid, cipher, mkbuf, keySize, ca, caLen,
-                        keyBits, keyBits - (ckLen << 3),
-                        ss->sec.authAlgorithm, ss->sec.authKeyBits,
-                        ss->sec.keaType, ss->sec.keaKeyBits);
-    if (rv != SECSuccess) {
-        goto loser;
-    }
-
-    /* Create session ciphers */
-    rv = ssl2_CreateSessionCypher(ss, sid, PR_FALSE);
-    if (rv != SECSuccess) {
-        goto loser;
-    }
-
-    SSL_TRC(1, ("%d: SSL[%d]: server, using %s cipher, clear=%d total=%d",
-                SSL_GETPID(), ss->fd, ssl_cipherName[cipher],
-                ckLen << 3, keySize << 3));
-    rv = SECSuccess;
-    goto done;
-
-loser:
-    rv = SECFailure;
-
-done:
-    PORT_Free(kbuf);
-    return rv;
-}
-
-/************************************************************************/
-
-/*
-** Rewrite the incoming cipher specs, comparing to list of specs we support,
-** (ss->cipherSpecs) and eliminating anything we don't support
-**
-*  Note: Our list may contain SSL v3 ciphers.
-*  We MUST NOT match on any of those.
-*  Fortunately, this is easy to detect because SSLv3 ciphers have zero
-*  in the first byte, and none of the SSLv2 ciphers do.
-*
-*  Called from ssl2_HandleClientHelloMessage().
-*  Returns the number of bytes of "qualified cipher specs",
-*  which is typically a multiple of 3, but will be zero if there are none.
-*/
-static int
-ssl2_QualifyCypherSpecs(sslSocket *ss,
-                        PRUint8 *cs, /* cipher specs in client hello msg. */
-                        int csLen)
-{
-    PRUint8 *ms;
-    PRUint8 *hs;
-    PRUint8 *qs;
-    int mc;
-    int hc;
-    PRUint8 qualifiedSpecs[ssl2_NUM_SUITES_IMPLEMENTED * 3];
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-    PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
-
-    if (!ss->cipherSpecs) {
-        SECStatus rv = ssl2_ConstructCipherSpecs(ss);
-        if (rv != SECSuccess || !ss->cipherSpecs)
-            return 0;
-    }
-
-    PRINT_BUF(10, (ss, "specs from client:", cs, csLen));
-    qs = qualifiedSpecs;
-    ms = ss->cipherSpecs;
-    for (mc = ss->sizeCipherSpecs; mc > 0; mc -= 3, ms += 3) {
-        if (ms[0] == 0)
-            continue;
-        for (hs = cs, hc = csLen; hc > 0; hs += 3, hc -= 3) {
-            if ((hs[0] == ms[0]) &&
-                (hs[1] == ms[1]) &&
-                (hs[2] == ms[2])) {
-                /* Copy this cipher spec into the "keep" section */
-                qs[0] = hs[0];
-                qs[1] = hs[1];
-                qs[2] = hs[2];
-                qs += 3;
-                break;
-            }
-        }
-    }
-    hc = qs - qualifiedSpecs;
-    PRINT_BUF(10, (ss, "qualified specs from client:", qualifiedSpecs, hc));
-    PORT_Memcpy(cs, qualifiedSpecs, hc);
-    return hc;
-}
-
-/*
-** Pick the best cipher we can find, given the array of server cipher
-** specs.  Returns cipher number (e.g. SSL_CK_*), or -1 for no overlap.
-** If successful, stores the master key size (bytes) in *pKeyLen.
-**
-** This is correct only for the client side, but presently
-** this function is only called from
-**  ssl2_ClientSetupSessionCypher() <- ssl2_HandleServerHelloMessage()
-**
-** Note that most servers only return a single cipher suite in their
-** ServerHello messages.  So, the code below for finding the "best" cipher
-** suite usually has only one choice.  The client and server should send
-** their cipher suite lists sorted in descending order by preference.
-*/
-static int
-ssl2_ChooseSessionCypher(sslSocket *ss,
-                         int hc,       /* number of cs's in hs. */
-                         PRUint8 *hs,  /* server hello's cipher suites. */
-                         int *pKeyLen) /* out: sym key size in bytes. */
-{
-    PRUint8 *ms;
-    unsigned int i;
-    int bestKeySize;
-    int bestRealKeySize;
-    int bestCypher;
-    int keySize;
-    int realKeySize;
-    PRUint8 *ohs = hs;
-    const PRUint8 *preferred;
-    static const PRUint8 noneSuch[3] = { 0, 0, 0 };
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-    PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
-
-    if (!ss->cipherSpecs) {
-        SECStatus rv = ssl2_ConstructCipherSpecs(ss);
-        if (rv != SECSuccess || !ss->cipherSpecs)
-            goto loser;
-    }
-
-    if (!ss->preferredCipher) {
-        unsigned int allowed = ss->allowedByPolicy & ss->chosenPreference &
-                               SSL_CB_IMPLEMENTED;
-        if (allowed) {
-            preferred = implementedCipherSuites;
-            for (i = ssl2_NUM_SUITES_IMPLEMENTED; i > 0; --i) {
-                if (0 != (allowed & (1U << preferred[0]))) {
-                    ss->preferredCipher = preferred;
-                    break;
-                }
-                preferred += 3;
-            }
-        }
-    }
-    preferred = ss->preferredCipher ? ss->preferredCipher : noneSuch;
-    /*
-    ** Scan list of ciphers received from peer and look for a match in
-    ** our list.
-    *  Note: Our list may contain SSL v3 ciphers.
-    *  We MUST NOT match on any of those.
-    *  Fortunately, this is easy to detect because SSLv3 ciphers have zero
-    *  in the first byte, and none of the SSLv2 ciphers do.
-    */
-    bestKeySize = bestRealKeySize = 0;
-    bestCypher = -1;
-    while (--hc >= 0) {
-        for (i = 0, ms = ss->cipherSpecs; i < ss->sizeCipherSpecs; i += 3, ms += 3) {
-            if ((hs[0] == preferred[0]) &&
-                (hs[1] == preferred[1]) &&
-                (hs[2] == preferred[2]) &&
-                hs[0] != 0) {
-                /* Pick this cipher immediately! */
-                *pKeyLen = (((hs[1] << 8) | hs[2]) + 7) >> 3;
-                return hs[0];
-            }
-            if ((hs[0] == ms[0]) && (hs[1] == ms[1]) && (hs[2] == ms[2]) &&
-                hs[0] != 0) {
-                /* Found a match */
-
-                /* Use secret keySize to determine which cipher is best */
-                realKeySize = (hs[1] << 8) | hs[2];
-                switch (hs[0]) {
-                    case SSL_CK_RC4_128_EXPORT40_WITH_MD5:
-                    case SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5:
-                        keySize = 40;
-                        break;
-                    default:
-                        keySize = realKeySize;
-                        break;
-                }
-                if (keySize > bestKeySize) {
-                    bestCypher = hs[0];
-                    bestKeySize = keySize;
-                    bestRealKeySize = realKeySize;
-                }
-            }
-        }
-        hs += 3;
-    }
-    if (bestCypher < 0) {
-        /*
-        ** No overlap between server and client. Re-examine server list
-        ** to see what kind of ciphers it does support so that we can set
-        ** the error code appropriately.
-        */
-        if ((ohs[0] == SSL_CK_RC4_128_WITH_MD5) ||
-            (ohs[0] == SSL_CK_RC2_128_CBC_WITH_MD5)) {
-            PORT_SetError(SSL_ERROR_US_ONLY_SERVER);
-        } else if ((ohs[0] == SSL_CK_RC4_128_EXPORT40_WITH_MD5) ||
-                   (ohs[0] == SSL_CK_RC2_128_CBC_EXPORT40_WITH_MD5)) {
-            PORT_SetError(SSL_ERROR_EXPORT_ONLY_SERVER);
-        } else {
-            PORT_SetError(SSL_ERROR_NO_CYPHER_OVERLAP);
-        }
-        SSL_DBG(("%d: SSL[%d]: no cipher overlap", SSL_GETPID(), ss->fd));
-        goto loser;
-    }
-    *pKeyLen = (bestRealKeySize + 7) >> 3;
-    return bestCypher;
-
-loser:
-    return -1;
-}
-
-static SECStatus
-ssl2_ClientHandleServerCert(sslSocket *ss, PRUint8 *certData, int certLen)
-{
-    CERTCertificate *cert = NULL;
-    SECItem certItem;
-
-    certItem.data = certData;
-    certItem.len = certLen;
-
-    /* decode the certificate */
-    cert = CERT_NewTempCertificate(ss->dbHandle, &certItem, NULL,
-                                   PR_FALSE, PR_TRUE);
-
-    if (cert == NULL) {
-        SSL_DBG(("%d: SSL[%d]: decode of server certificate fails",
-                 SSL_GETPID(), ss->fd));
-        PORT_SetError(SSL_ERROR_BAD_CERTIFICATE);
-        return SECFailure;
-    }
-
-#ifdef TRACE
-    {
-        if (ssl_trace >= 1) {
-            char *issuer;
-            char *subject;
-            issuer = CERT_NameToAscii(&cert->issuer);
-            subject = CERT_NameToAscii(&cert->subject);
-            SSL_TRC(1, ("%d: server certificate issuer: '%s'",
-                        SSL_GETPID(), issuer ? issuer : "OOPS"));
-            SSL_TRC(1, ("%d: server name: '%s'",
-                        SSL_GETPID(), subject ? subject : "OOPS"));
-            PORT_Free(issuer);
-            PORT_Free(subject);
-        }
-    }
-#endif
-
-    ss->sec.peerCert = cert;
-    return SECSuccess;
-}
-
-/*
- * Format one block of data for public/private key encryption using
- * the rules defined in PKCS #1. SSL2 does this itself to handle the
- * rollback detection.
- */
-#define RSA_BLOCK_MIN_PAD_LEN 8
-#define RSA_BLOCK_FIRST_OCTET 0x00
-#define RSA_BLOCK_AFTER_PAD_OCTET 0x00
-#define RSA_BLOCK_PUBLIC_OCTET 0x02
-unsigned char *
-ssl_FormatSSL2Block(unsigned modulusLen, SECItem *data)
-{
-    unsigned char *block;
-    unsigned char *bp;
-    int padLen;
-    SECStatus rv;
-    int i;
-
-    if (modulusLen < data->len + (3 + RSA_BLOCK_MIN_PAD_LEN)) {
-        PORT_SetError(SEC_ERROR_BAD_KEY);
-        return NULL;
-    }
-    block = (unsigned char *)PORT_Alloc(modulusLen);
-    if (block == NULL)
-        return NULL;
-
-    bp = block;
-
-    /*
-     * All RSA blocks start with two octets:
-     *  0x00 || BlockType
-     */
-    *bp++ = RSA_BLOCK_FIRST_OCTET;
-    *bp++ = RSA_BLOCK_PUBLIC_OCTET;
-
-    /*
-     * 0x00 || BT || Pad || 0x00 || ActualData
-     *   1      1   padLen    1      data->len
-     * Pad is all non-zero random bytes.
-     */
-    padLen = modulusLen - data->len - 3;
-    PORT_Assert(padLen >= RSA_BLOCK_MIN_PAD_LEN);
-    rv = PK11_GenerateRandom(bp, padLen);
-    if (rv == SECFailure)
-        goto loser;
-    /* replace all the 'zero' bytes */
-    for (i = 0; i < padLen; i++) {
-        while (bp[i] == RSA_BLOCK_AFTER_PAD_OCTET) {
-            rv = PK11_GenerateRandom(bp + i, 1);
-            if (rv == SECFailure)
-                goto loser;
-        }
-    }
-    bp += padLen;
-    *bp++ = RSA_BLOCK_AFTER_PAD_OCTET;
-    PORT_Memcpy(bp, data->data, data->len);
-
-    return block;
-loser:
-    if (block)
-        PORT_Free(block);
-    return NULL;
-}
-
-/*
-** Given the server's public key and cipher specs, generate a session key
-** that is ready to use for encrypting/decrypting the byte stream. At
-** the same time, generate the SSL_MT_CLIENT_MASTER_KEY message and
-** send it to the server.
-**
-** Called from ssl2_HandleServerHelloMessage()
-*/
-static SECStatus
-ssl2_ClientSetupSessionCypher(sslSocket *ss, PRUint8 *cs, int csLen)
-{
-    sslSessionID *sid;
-    PRUint8 *ca; /* points to iv data, or NULL if none. */
-    PRUint8 *ekbuf = 0;
-    CERTCertificate *cert = 0;
-    SECKEYPublicKey *serverKey = 0;
-    unsigned modulusLen = 0;
-    SECStatus rv;
-    int cipher;
-    int keyLen; /* cipher symkey size in bytes. */
-    int ckLen;  /* publicly reveal this many bytes of key. */
-    int caLen;  /* length of IV data at *ca.    */
-    int nc;
-
-    unsigned char *eblock; /* holds unencrypted PKCS#1 formatted key. */
-    SECItem rek;           /* holds portion of symkey to be encrypted. */
-
-    PRUint8 keyData[SSL_MAX_MASTER_KEY_BYTES];
-    PRUint8 iv[8];
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    eblock = NULL;
-
-    sid = ss->sec.ci.sid;
-    PORT_Assert(sid != 0);
-
-    cert = ss->sec.peerCert;
-
-    serverKey = CERT_ExtractPublicKey(cert);
-    if (!serverKey) {
-        SSL_DBG(("%d: SSL[%d]: extract public key failed: error=%d",
-                 SSL_GETPID(), ss->fd, PORT_GetError()));
-        PORT_SetError(SSL_ERROR_BAD_CERTIFICATE);
-        rv = SECFailure;
-        goto loser2;
-    }
-
-    ss->sec.authAlgorithm = ssl_sign_rsa;
-    ss->sec.keaType = ssl_kea_rsa;
-    ss->sec.keaKeyBits =
-        ss->sec.authKeyBits = SECKEY_PublicKeyStrengthInBits(serverKey);
-
-    /* Choose a compatible cipher with the server */
-    nc = csLen / 3;
-    cipher = ssl2_ChooseSessionCypher(ss, nc, cs, &keyLen);
-    if (cipher < 0) {
-        /* ssl2_ChooseSessionCypher has set error code. */
-        ssl2_SendErrorMessage(ss, SSL_PE_NO_CYPHERS);
-        goto loser;
-    }
-
-    /* Generate the random keys */
-    PK11_GenerateRandom(keyData, sizeof(keyData));
-
-    /*
-    ** Next, carve up the keys into clear and encrypted portions. The
-    ** clear data is taken from the start of keyData and the encrypted
-    ** portion from the remainder. Note that each of these portions is
-    ** carved in half, one half for the read-key and one for the
-    ** write-key.
-    */
-    ca = 0;
-
-    /* We know that cipher is a legit value here, because
-     * ssl2_ChooseSessionCypher doesn't return bogus values.
-     */
-    ckLen = ssl_Specs[cipher].pubLen; /* cleartext key length. */
-    caLen = ssl_Specs[cipher].ivLen;  /* IV length.     */
-    if (caLen) {
-        PORT_Assert(sizeof iv >= caLen);
-        PK11_GenerateRandom(iv, caLen);
-        ca = iv;
-    }
-
-    /* Fill in session-id */
-    rv = ssl2_FillInSID(sid, cipher, keyData, keyLen,
-                        ca, caLen, keyLen << 3, (keyLen - ckLen) << 3,
-                        ss->sec.authAlgorithm, ss->sec.authKeyBits,
-                        ss->sec.keaType, ss->sec.keaKeyBits);
-    if (rv != SECSuccess) {
-        goto loser;
-    }
-
-    SSL_TRC(1, ("%d: SSL[%d]: client, using %s cipher, clear=%d total=%d",
-                SSL_GETPID(), ss->fd, ssl_cipherName[cipher],
-                ckLen << 3, keyLen << 3));
-
-    /* Now setup read and write ciphers */
-    rv = ssl2_CreateSessionCypher(ss, sid, PR_TRUE);
-    if (rv != SECSuccess) {
-        goto loser;
-    }
-
-    /*
-    ** Fill in the encryption buffer with some random bytes. Then
-    ** copy in the portion of the session key we are encrypting.
-    */
-    modulusLen = SECKEY_PublicKeyStrength(serverKey);
-    rek.data = keyData + ckLen;
-    rek.len = keyLen - ckLen;
-    eblock = ssl_FormatSSL2Block(modulusLen, &rek);
-    if (eblock == NULL)
-        goto loser;
-
-    /* Set up the padding for version 2 rollback detection. */
-    /* XXX We should really use defines here */
-    if (!SSL3_ALL_VERSIONS_DISABLED(&ss->vrange)) {
-        PORT_Assert((modulusLen - rek.len) > 12);
-        PORT_Memset(eblock + modulusLen - rek.len - 8 - 1, 0x03, 8);
-    }
-    ekbuf = (PRUint8 *)PORT_Alloc(modulusLen);
-    if (!ekbuf)
-        goto loser;
-    PRINT_BUF(10, (ss, "master key encryption block:",
-                   eblock, modulusLen));
-
-    /* Encrypt ekitem */
-    rv = PK11_PubEncryptRaw(serverKey, ekbuf, eblock, modulusLen,
-                            ss->pkcs11PinArg);
-    if (rv)
-        goto loser;
-
-    /*  Now we have everything ready to send */
-    rv = ssl2_SendSessionKeyMessage(ss, cipher, keyLen << 3, ca, caLen,
-                                    keyData, ckLen, ekbuf, modulusLen);
-    if (rv != SECSuccess) {
-        goto loser;
-    }
-    rv = SECSuccess;
-    goto done;
-
-loser:
-    rv = SECFailure;
-
-loser2:
-done:
-    PORT_Memset(keyData, 0, sizeof(keyData));
-    PORT_ZFree(ekbuf, modulusLen);
-    PORT_ZFree(eblock, modulusLen);
-    SECKEY_DestroyPublicKey(serverKey);
-    return rv;
-}
-
-/************************************************************************/
-
-/*
- * Called from ssl2_HandleMessage in response to SSL_MT_SERVER_FINISHED message.
- * Caller holds recvBufLock and handshakeLock
- */
-static void
-ssl2_ClientRegSessionID(sslSocket *ss, PRUint8 *s)
-{
-    sslSessionID *sid = ss->sec.ci.sid;
-
-    /* Record entry in nonce cache */
-    if (sid->peerCert == NULL) {
-        PORT_Memcpy(sid->u.ssl2.sessionID, s, sizeof(sid->u.ssl2.sessionID));
-        sid->peerCert = CERT_DupCertificate(ss->sec.peerCert);
-    }
-    if (!ss->opt.noCache && sid->cached == never_cached)
-        (*ss->sec.cache)(sid);
-}
-
-/* Called from ssl2_HandleMessage() */
-static SECStatus
-ssl2_TriggerNextMessage(sslSocket *ss)
-{
-    SECStatus rv;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    if ((ss->sec.ci.requiredElements & CIS_HAVE_CERTIFICATE) &&
-        !(ss->sec.ci.sentElements & CIS_HAVE_CERTIFICATE)) {
-        ss->sec.ci.sentElements |= CIS_HAVE_CERTIFICATE;
-        rv = ssl2_SendCertificateRequestMessage(ss);
-        return rv;
-    }
-    return SECSuccess;
-}
-
-/* See if it's time to send our finished message, or if the handshakes are
-** complete.  Send finished message if appropriate.
-** Returns SECSuccess unless anything goes wrong.
-**
-** Called from ssl2_HandleMessage,
-**             ssl2_HandleVerifyMessage
-**             ssl2_HandleServerHelloMessage
-**             ssl2_HandleClientSessionKeyMessage
-*/
-static SECStatus
-ssl2_TryToFinish(sslSocket *ss)
-{
-    SECStatus rv;
-    char e, ef;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    e = ss->sec.ci.elements;
-    ef = e | CIS_HAVE_FINISHED;
-    if ((ef & ss->sec.ci.requiredElements) == ss->sec.ci.requiredElements) {
-        if (ss->sec.isServer) {
-            /* Send server finished message if we already didn't */
-            rv = ssl2_SendServerFinishedMessage(ss);
-        } else {
-            /* Send client finished message if we already didn't */
-            rv = ssl2_SendClientFinishedMessage(ss);
-        }
-        if (rv != SECSuccess) {
-            return rv;
-        }
-        if ((e & ss->sec.ci.requiredElements) == ss->sec.ci.requiredElements) {
-            /* Totally finished */
-            ss->handshake = 0;
-            return SECSuccess;
-        }
-    }
-    return SECSuccess;
-}
-
-/*
-** Called from ssl2_HandleRequestCertificate
-*/
-static SECStatus
-ssl2_SignResponse(sslSocket *ss,
-                  SECKEYPrivateKey *key,
-                  SECItem *response)
-{
-    SGNContext *sgn = NULL;
-    PRUint8 *challenge;
-    unsigned int len;
-    SECStatus rv = SECFailure;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    challenge = ss->sec.ci.serverChallenge;
-    len = ss->sec.ci.serverChallengeLen;
-
-    /* Sign the expected data... */
-    sgn = SGN_NewContext(SEC_OID_PKCS1_MD5_WITH_RSA_ENCRYPTION, key);
-    if (!sgn)
-        goto done;
-    rv = SGN_Begin(sgn);
-    if (rv != SECSuccess)
-        goto done;
-    rv = SGN_Update(sgn, ss->sec.ci.readKey, ss->sec.ci.keySize);
-    if (rv != SECSuccess)
-        goto done;
-    rv = SGN_Update(sgn, ss->sec.ci.writeKey, ss->sec.ci.keySize);
-    if (rv != SECSuccess)
-        goto done;
-    rv = SGN_Update(sgn, challenge, len);
-    if (rv != SECSuccess)
-        goto done;
-    rv = SGN_Update(sgn, ss->sec.peerCert->derCert.data,
-                    ss->sec.peerCert->derCert.len);
-    if (rv != SECSuccess)
-        goto done;
-    rv = SGN_End(sgn, response);
-    if (rv != SECSuccess)
-        goto done;
-
-done:
-    SGN_DestroyContext(sgn, PR_TRUE);
-    return rv == SECSuccess ? SECSuccess : SECFailure;
-}
-
-/*
-** Try to handle a request-certificate message. Get client's certificate
-** and private key and sign a message for the server to see.
-** Caller must hold handshakeLock
-**
-** Called from ssl2_HandleMessage().
-*/
-static int
-ssl2_HandleRequestCertificate(sslSocket *ss)
-{
-    CERTCertificate *cert = NULL; /* app-selected client cert. */
-    SECKEYPrivateKey *key = NULL; /* priv key for cert. */
-    SECStatus rv;
-    SECItem response;
-    int ret = 0;
-    PRUint8 authType;
-
-    /*
-     * These things all need to be initialized before we can "goto loser".
-     */
-    response.data = NULL;
-
-    /* get challenge info from connectionInfo */
-    authType = ss->sec.ci.authType;
-
-    if (authType != SSL_AT_MD5_WITH_RSA_ENCRYPTION) {
-        SSL_TRC(7, ("%d: SSL[%d]: unsupported auth type 0x%x", SSL_GETPID(),
-                    ss->fd, authType));
-        goto no_cert_error;
-    }
-
-    /* Get certificate and private-key from client */
-    if (!ss->getClientAuthData) {
-        SSL_TRC(7, ("%d: SSL[%d]: client doesn't support client-auth",
-                    SSL_GETPID(), ss->fd));
-        goto no_cert_error;
-    }
-    ret = (*ss->getClientAuthData)(ss->getClientAuthDataArg, ss->fd,
-                                   NULL, &cert, &key);
-    if (ret == SECWouldBlock) {
-        PORT_SetError(SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_SSL2);
-        ret = -1;
-        goto loser;
-    }
-
-    if (ret) {
-        goto no_cert_error;
-    }
-
-    /* check what the callback function returned */
-    if ((!cert) || (!key)) {
-        /* we are missing either the key or cert */
-        if (cert) {
-            /* got a cert, but no key - free it */
-            CERT_DestroyCertificate(cert);
-            cert = NULL;
-        }
-        if (key) {
-            /* got a key, but no cert - free it */
-            SECKEY_DestroyPrivateKey(key);
-            key = NULL;
-        }
-        goto no_cert_error;
-    }
-
-    rv = ssl2_SignResponse(ss, key, &response);
-    if (rv != SECSuccess) {
-        ret = -1;
-        goto loser;
-    }
-
-    /* Send response message */
-    ret = ssl2_SendCertificateResponseMessage(ss, &cert->derCert, &response);
-
-    /* Now, remember the cert we sent. But first, forget any previous one. */
-    if (ss->sec.localCert) {
-        CERT_DestroyCertificate(ss->sec.localCert);
-    }
-    ss->sec.localCert = CERT_DupCertificate(cert);
-    PORT_Assert(!ss->sec.ci.sid->localCert);
-    if (ss->sec.ci.sid->localCert) {
-        CERT_DestroyCertificate(ss->sec.ci.sid->localCert);
-    }
-    ss->sec.ci.sid->localCert = cert;
-    cert = NULL;
-
-    goto done;
-
-no_cert_error:
-    SSL_TRC(7, ("%d: SSL[%d]: no certificate (ret=%d)", SSL_GETPID(),
-                ss->fd, ret));
-    ret = ssl2_SendErrorMessage(ss, SSL_PE_NO_CERTIFICATE);
-
-loser:
-done:
-    if (cert) {
-        CERT_DestroyCertificate(cert);
-    }
-    if (key) {
-        SECKEY_DestroyPrivateKey(key);
-    }
-    if (response.data) {
-        PORT_Free(response.data);
-    }
-
-    return ret;
-}
-
-/*
-** Called from ssl2_HandleMessage for SSL_MT_CLIENT_CERTIFICATE message.
-** Caller must hold HandshakeLock and RecvBufLock, since cd and response
-** are contained in the gathered input data.
-*/
-static SECStatus
-ssl2_HandleClientCertificate(sslSocket *ss,
-                             PRUint8 certType, /* XXX unused */
-                             PRUint8 *cd,
-                             unsigned int cdLen,
-                             PRUint8 *response,
-                             unsigned int responseLen)
-{
-    CERTCertificate *cert = NULL;
-    SECKEYPublicKey *pubKey = NULL;
-    VFYContext *vfy = NULL;
-    SECItem *derCert;
-    SECStatus rv = SECFailure;
-    SECItem certItem;
-    SECItem rep;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-    PORT_Assert(ss->opt.noLocks || ssl_HaveRecvBufLock(ss));
-
-    /* Extract the certificate */
-    certItem.data = cd;
-    certItem.len = cdLen;
-
-    cert = CERT_NewTempCertificate(ss->dbHandle, &certItem, NULL,
-                                   PR_FALSE, PR_TRUE);
-    if (cert == NULL) {
-        goto loser;
-    }
-
-    /* save the certificate, since the auth routine will need it */
-    ss->sec.peerCert = cert;
-
-    /* Extract the public key */
-    pubKey = CERT_ExtractPublicKey(cert);
-    if (!pubKey)
-        goto loser;
-
-    /* Verify the response data... */
-    rep.data = response;
-    rep.len = responseLen;
-    /* SSL 2.0 only supports RSA certs, so we don't have to worry about
-     * DSA here. */
-    vfy = VFY_CreateContext(pubKey, &rep, SEC_OID_PKCS1_RSA_ENCRYPTION,
-                            ss->pkcs11PinArg);
-    if (!vfy)
-        goto loser;
-    rv = VFY_Begin(vfy);
-    if (rv)
-        goto loser;
-
-    rv = VFY_Update(vfy, ss->sec.ci.readKey, ss->sec.ci.keySize);
-    if (rv)
-        goto loser;
-    rv = VFY_Update(vfy, ss->sec.ci.writeKey, ss->sec.ci.keySize);
-    if (rv)
-        goto loser;
-    rv = VFY_Update(vfy, ss->sec.ci.serverChallenge, SSL_CHALLENGE_BYTES);
-    if (rv)
-        goto loser;
-
-    derCert = &ss->serverCerts[kt_rsa].serverCert->derCert;
-    rv = VFY_Update(vfy, derCert->data, derCert->len);
-    if (rv)
-        goto loser;
-    rv = VFY_End(vfy);
-    if (rv)
-        goto loser;
-
-    /* Now ask the server application if it likes the certificate... */
-    rv = (SECStatus)(*ss->authCertificate)(ss->authCertificateArg,
-                                           ss->fd, PR_TRUE, PR_TRUE);
-    /* Hey, it liked it. */
-    if (SECSuccess == rv)
-        goto done;
-
-loser:
-    ss->sec.peerCert = NULL;
-    CERT_DestroyCertificate(cert);
-
-done:
-    VFY_DestroyContext(vfy, PR_TRUE);
-    SECKEY_DestroyPublicKey(pubKey);
-    return rv;
-}
-
-/*
-** Handle remaining messages between client/server. Process finished
-** messages from either side and any authentication requests.
-** This should only be called for SSLv2 handshake messages,
-** not for application data records.
-** Caller must hold handshake lock.
-**
-** Called from ssl_Do1stHandshake().
-**
-*/
-static SECStatus
-ssl2_HandleMessage(sslSocket *ss)
-{
-    PRUint8 *data;
-    PRUint8 *cid;
-    unsigned len, certType, certLen, responseLen;
-    int rv;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ssl_GetRecvBufLock(ss);
-
-    data = ss->gs.buf.buf + ss->gs.recordOffset;
-
-    if (ss->gs.recordLen < 1) {
-        goto bad_peer;
-    }
-    SSL_TRC(3, ("%d: SSL[%d]: received %d message",
-                SSL_GETPID(), ss->fd, data[0]));
-    DUMP_MSG(29, (ss, data, ss->gs.recordLen));
-
-    switch (data[0]) {
-        case SSL_MT_CLIENT_FINISHED:
-            if (ss->sec.ci.elements & CIS_HAVE_FINISHED) {
-                SSL_DBG(("%d: SSL[%d]: dup client-finished message",
-                         SSL_GETPID(), ss->fd));
-                goto bad_peer;
-            }
-
-            /* See if nonce matches */
-            len = ss->gs.recordLen - 1;
-            cid = data + 1;
-            if ((len != sizeof(ss->sec.ci.connectionID)) ||
-                (PORT_Memcmp(ss->sec.ci.connectionID, cid, len) != 0)) {
-                SSL_DBG(("%d: SSL[%d]: bad connection-id", SSL_GETPID(), ss->fd));
-                PRINT_BUF(5, (ss, "sent connection-id",
-                              ss->sec.ci.connectionID,
-                              sizeof(ss->sec.ci.connectionID)));
-                PRINT_BUF(5, (ss, "rcvd connection-id", cid, len));
-                goto bad_peer;
-            }
-
-            SSL_TRC(5, ("%d: SSL[%d]: got client finished, waiting for 0x%d",
-                        SSL_GETPID(), ss->fd,
-                        ss->sec.ci.requiredElements ^ ss->sec.ci.elements));
-            ss->sec.ci.elements |= CIS_HAVE_FINISHED;
-            break;
-
-        case SSL_MT_SERVER_FINISHED:
-            if (ss->sec.ci.elements & CIS_HAVE_FINISHED) {
-                SSL_DBG(("%d: SSL[%d]: dup server-finished message",
-                         SSL_GETPID(), ss->fd));
-                goto bad_peer;
-            }
-
-            if (ss->gs.recordLen - 1 != SSL2_SESSIONID_BYTES) {
-                SSL_DBG(("%d: SSL[%d]: bad server-finished message, len=%d",
-                         SSL_GETPID(), ss->fd, ss->gs.recordLen));
-                goto bad_peer;
-            }
-            ssl2_ClientRegSessionID(ss, data + 1);
-            SSL_TRC(5, ("%d: SSL[%d]: got server finished, waiting for 0x%d",
-                        SSL_GETPID(), ss->fd,
-                        ss->sec.ci.requiredElements ^ ss->sec.ci.elements));
-            ss->sec.ci.elements |= CIS_HAVE_FINISHED;
-            break;
-
-        case SSL_MT_REQUEST_CERTIFICATE:
-            len = ss->gs.recordLen - 2;
-            if ((len < SSL_MIN_CHALLENGE_BYTES) ||
-                (len > SSL_MAX_CHALLENGE_BYTES)) {
-                /* Bad challenge */
-                SSL_DBG(("%d: SSL[%d]: bad cert request message: code len=%d",
-                         SSL_GETPID(), ss->fd, len));
-                goto bad_peer;
-            }
-
-            /* save auth request info */
-            ss->sec.ci.authType = data[1];
-            ss->sec.ci.serverChallengeLen = len;
-            PORT_Memcpy(ss->sec.ci.serverChallenge, data + 2, len);
-
-            rv = ssl2_HandleRequestCertificate(ss);
-            if (rv == SECWouldBlock) {
-                SSL_TRC(3, ("%d: SSL[%d]: async cert request",
-                            SSL_GETPID(), ss->fd));
-                /* someone is handling this asynchronously */
-                ssl_ReleaseRecvBufLock(ss);
-                return SECWouldBlock;
-            }
-            if (rv) {
-                SET_ERROR_CODE
-                goto loser;
-            }
-            break;
-
-        case SSL_MT_CLIENT_CERTIFICATE:
-            if (!ss->authCertificate) {
-                /* Server asked for authentication and can't handle it */
-                PORT_SetError(SSL_ERROR_BAD_SERVER);
-                goto loser;
-            }
-            if (ss->gs.recordLen < SSL_HL_CLIENT_CERTIFICATE_HBYTES) {
-                SET_ERROR_CODE
-                goto loser;
-            }
-            certType = data[1];
-            certLen = (data[2] << 8) | data[3];
-            responseLen = (data[4] << 8) | data[5];
-            if (certType != SSL_CT_X509_CERTIFICATE) {
-                PORT_SetError(SSL_ERROR_UNSUPPORTED_CERTIFICATE_TYPE);
-                goto loser;
-            }
-            if (certLen + responseLen + SSL_HL_CLIENT_CERTIFICATE_HBYTES >
-                ss->gs.recordLen) {
-                /* prevent overflow crash. */
-                rv = SECFailure;
-            } else
-                rv = ssl2_HandleClientCertificate(ss, data[1],
-                                                  data + SSL_HL_CLIENT_CERTIFICATE_HBYTES,
-                                                  certLen,
-                                                  data + SSL_HL_CLIENT_CERTIFICATE_HBYTES + certLen,
-                                                  responseLen);
-            if (rv) {
-                (void)ssl2_SendErrorMessage(ss, SSL_PE_BAD_CERTIFICATE);
-                SET_ERROR_CODE
-                goto loser;
-            }
-            ss->sec.ci.elements |= CIS_HAVE_CERTIFICATE;
-            break;
-
-        case SSL_MT_ERROR:
-            rv = (data[1] << 8) | data[2];
-            SSL_TRC(2, ("%d: SSL[%d]: got error message, error=0x%x",
-                        SSL_GETPID(), ss->fd, rv));
-
-            /* Convert protocol error number into API error number */
-            switch (rv) {
-                case SSL_PE_NO_CYPHERS:
-                    rv = SSL_ERROR_NO_CYPHER_OVERLAP;
-                    break;
-                case SSL_PE_NO_CERTIFICATE:
-                    rv = SSL_ERROR_NO_CERTIFICATE;
-                    break;
-                case SSL_PE_BAD_CERTIFICATE:
-                    rv = SSL_ERROR_BAD_CERTIFICATE;
-                    break;
-                case SSL_PE_UNSUPPORTED_CERTIFICATE_TYPE:
-                    rv = SSL_ERROR_UNSUPPORTED_CERTIFICATE_TYPE;
-                    break;
-                default:
-                    goto bad_peer;
-            }
-            /* XXX make certificate-request optionally fail... */
-            PORT_SetError(rv);
-            goto loser;
-
-        default:
-            SSL_DBG(("%d: SSL[%d]: unknown message %d",
-                     SSL_GETPID(), ss->fd, data[0]));
-            goto loser;
-    }
-
-    SSL_TRC(3, ("%d: SSL[%d]: handled %d message, required=0x%x got=0x%x",
-                SSL_GETPID(), ss->fd, data[0],
-                ss->sec.ci.requiredElements, ss->sec.ci.elements));
-
-    rv = ssl2_TryToFinish(ss);
-    if (rv != SECSuccess)
-        goto loser;
-
-    ss->gs.recordLen = 0;
-    ssl_ReleaseRecvBufLock(ss);
-
-    if (ss->handshake == 0) {
-        return SECSuccess;
-    }
-
-    ss->handshake = ssl_GatherRecord1stHandshake;
-    ss->nextHandshake = ssl2_HandleMessage;
-    return ssl2_TriggerNextMessage(ss);
-
-bad_peer:
-    PORT_SetError(ss->sec.isServer ? SSL_ERROR_BAD_CLIENT : SSL_ERROR_BAD_SERVER);
-/* FALL THROUGH */
-
-loser:
-    ssl_ReleaseRecvBufLock(ss);
-    return SECFailure;
-}
-
-/************************************************************************/
-
-/* Called from ssl_Do1stHandshake, after ssl2_HandleServerHelloMessage.
-*/
-static SECStatus
-ssl2_HandleVerifyMessage(sslSocket *ss)
-{
-    PRUint8 *data;
-    SECStatus rv;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-    ssl_GetRecvBufLock(ss);
-
-    data = ss->gs.buf.buf + ss->gs.recordOffset;
-    DUMP_MSG(29, (ss, data, ss->gs.recordLen));
-    if ((ss->gs.recordLen != 1 + SSL_CHALLENGE_BYTES) ||
-        (data[0] != SSL_MT_SERVER_VERIFY) ||
-        NSS_SecureMemcmp(data + 1, ss->sec.ci.clientChallenge,
-                         SSL_CHALLENGE_BYTES)) {
-        /* Bad server */
-        PORT_SetError(SSL_ERROR_BAD_SERVER);
-        goto loser;
-    }
-    ss->sec.ci.elements |= CIS_HAVE_VERIFY;
-
-    SSL_TRC(5, ("%d: SSL[%d]: got server-verify, required=0x%d got=0x%x",
-                SSL_GETPID(), ss->fd, ss->sec.ci.requiredElements,
-                ss->sec.ci.elements));
-
-    rv = ssl2_TryToFinish(ss);
-    if (rv)
-        goto loser;
-
-    ss->gs.recordLen = 0;
-    ssl_ReleaseRecvBufLock(ss);
-
-    if (ss->handshake == 0) {
-        return SECSuccess;
-    }
-    ss->handshake = ssl_GatherRecord1stHandshake;
-    ss->nextHandshake = ssl2_HandleMessage;
-    return SECSuccess;
-
-loser:
-    ssl_ReleaseRecvBufLock(ss);
-    return SECFailure;
-}
-
-/* Not static because ssl2_GatherData() tests ss->nextHandshake for this value.
- * ICK!
- * Called from ssl_Do1stHandshake after ssl2_BeginClientHandshake()
- */
-SECStatus
-ssl2_HandleServerHelloMessage(sslSocket *ss)
-{
-    sslSessionID *sid;
-    PRUint8 *cert;
-    PRUint8 *cs;
-    PRUint8 *data;
-    SECStatus rv;
-    unsigned int needed, sidHit, certLen, csLen, cidLen, certType, err;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    if (!ss->opt.enableSSL2) {
-        PORT_SetError(SSL_ERROR_SSL2_DISABLED);
-        return SECFailure;
-    }
-
-    ssl_GetRecvBufLock(ss);
-
-    PORT_Assert(ss->sec.ci.sid != 0);
-    sid = ss->sec.ci.sid;
-
-    data = ss->gs.buf.buf + ss->gs.recordOffset;
-    DUMP_MSG(29, (ss, data, ss->gs.recordLen));
-
-    /* Make sure first message has some data and is the server hello message */
-    if ((ss->gs.recordLen < SSL_HL_SERVER_HELLO_HBYTES) ||
-        (data[0] != SSL_MT_SERVER_HELLO)) {
-        if ((data[0] == SSL_MT_ERROR) && (ss->gs.recordLen == 3)) {
-            err = (data[1] << 8) | data[2];
-            if (err == SSL_PE_NO_CYPHERS) {
-                PORT_SetError(SSL_ERROR_NO_CYPHER_OVERLAP);
-                goto loser;
-            }
-        }
-        goto bad_server;
-    }
-
-    sidHit = data[1];
-    certType = data[2];
-    ss->version = (data[3] << 8) | data[4];
-    certLen = (data[5] << 8) | data[6];
-    csLen = (data[7] << 8) | data[8];
-    cidLen = (data[9] << 8) | data[10];
-    cert = data + SSL_HL_SERVER_HELLO_HBYTES;
-    cs = cert + certLen;
-
-    SSL_TRC(5,
-            ("%d: SSL[%d]: server-hello, hit=%d vers=%x certLen=%d csLen=%d cidLen=%d",
-             SSL_GETPID(), ss->fd, sidHit, ss->version, certLen,
-             csLen, cidLen));
-    if (ss->version != SSL_LIBRARY_VERSION_2) {
-        if (ss->version < SSL_LIBRARY_VERSION_2) {
-            SSL_TRC(3, ("%d: SSL[%d]: demoting self (%x) to server version (%x)",
-                        SSL_GETPID(), ss->fd, SSL_LIBRARY_VERSION_2,
-                        ss->version));
-        } else {
-            SSL_TRC(1, ("%d: SSL[%d]: server version is %x (we are %x)",
-                        SSL_GETPID(), ss->fd, ss->version, SSL_LIBRARY_VERSION_2));
-            /* server claims to be newer but does not follow protocol */
-            PORT_SetError(SSL_ERROR_UNSUPPORTED_VERSION);
-            goto loser;
-        }
-    }
-
-    if ((SSL_HL_SERVER_HELLO_HBYTES + certLen + csLen + cidLen >
-         ss->gs.recordLen) ||
-        (csLen % 3) != 0
-        /* || cidLen < SSL_CONNECTIONID_BYTES || cidLen > 32  */
-        ) {
-        goto bad_server;
-    }
-
-    /* Save connection-id.
-    ** This code only saves the first 16 byte of the connectionID.
-    ** If the connectionID is shorter than 16 bytes, it is zero-padded.
-    */
-    if (cidLen < sizeof ss->sec.ci.connectionID)
-        memset(ss->sec.ci.connectionID, 0, sizeof ss->sec.ci.connectionID);
-    cidLen = PR_MIN(cidLen, sizeof ss->sec.ci.connectionID);
-    PORT_Memcpy(ss->sec.ci.connectionID, cs + csLen, cidLen);
-
-    /* See if session-id hit */
-    needed = CIS_HAVE_MASTER_KEY | CIS_HAVE_FINISHED | CIS_HAVE_VERIFY;
-    if (sidHit) {
-        if (certLen || csLen) {
-            /* Uh oh - bogus server */
-            SSL_DBG(("%d: SSL[%d]: client, huh? hit=%d certLen=%d csLen=%d",
-                     SSL_GETPID(), ss->fd, sidHit, certLen, csLen));
-            goto bad_server;
-        }
-
-        /* Total winner. */
-        SSL_TRC(1, ("%d: SSL[%d]: client, using nonce for peer=0x%08x "
-                    "port=0x%04x",
-                    SSL_GETPID(), ss->fd, ss->sec.ci.peer, ss->sec.ci.port));
-        ss->sec.peerCert = CERT_DupCertificate(sid->peerCert);
-        ss->sec.authAlgorithm = sid->authAlgorithm;
-        ss->sec.authKeyBits = sid->authKeyBits;
-        ss->sec.keaType = sid->keaType;
-        ss->sec.keaKeyBits = sid->keaKeyBits;
-        rv = ssl2_CreateSessionCypher(ss, sid, PR_TRUE);
-        if (rv != SECSuccess) {
-            goto loser;
-        }
-    } else {
-        if (certType != SSL_CT_X509_CERTIFICATE) {
-            PORT_SetError(SSL_ERROR_UNSUPPORTED_CERTIFICATE_TYPE);
-            goto loser;
-        }
-        if (csLen == 0) {
-            PORT_SetError(SSL_ERROR_NO_CYPHER_OVERLAP);
-            SSL_DBG(("%d: SSL[%d]: no cipher overlap",
-                     SSL_GETPID(), ss->fd));
-            goto loser;
-        }
-        if (certLen == 0) {
-            SSL_DBG(("%d: SSL[%d]: client, huh? certLen=%d csLen=%d",
-                     SSL_GETPID(), ss->fd, certLen, csLen));
-            goto bad_server;
-        }
-
-        if (sid->cached != never_cached) {
-            /* Forget our session-id - server didn't like it */
-            SSL_TRC(7, ("%d: SSL[%d]: server forgot me, uncaching session-id",
-                        SSL_GETPID(), ss->fd));
-            if (ss->sec.uncache)
-                (*ss->sec.uncache)(sid);
-            ssl_FreeSID(sid);
-            ss->sec.ci.sid = sid = PORT_ZNew(sslSessionID);
-            if (!sid) {
-                goto loser;
-            }
-            sid->references = 1;
-            sid->addr = ss->sec.ci.peer;
-            sid->port = ss->sec.ci.port;
-        }
-
-        /* decode the server's certificate */
-        rv = ssl2_ClientHandleServerCert(ss, cert, certLen);
-        if (rv != SECSuccess) {
-            if (PORT_GetError() == SSL_ERROR_BAD_CERTIFICATE) {
-                (void)ssl2_SendErrorMessage(ss, SSL_PE_BAD_CERTIFICATE);
-            }
-            goto loser;
-        }
-
-        /* Setup new session cipher */
-        rv = ssl2_ClientSetupSessionCypher(ss, cs, csLen);
-        if (rv != SECSuccess) {
-            if (PORT_GetError() == SSL_ERROR_BAD_CERTIFICATE) {
-                (void)ssl2_SendErrorMessage(ss, SSL_PE_BAD_CERTIFICATE);
-            }
-            goto loser;
-        }
-    }
-
-    /* Build up final list of required elements */
-    ss->sec.ci.elements = CIS_HAVE_MASTER_KEY;
-    ss->sec.ci.requiredElements = needed;
-
-    if (!sidHit) {
-        /* verify the server's certificate. if sidHit, don't check signatures */
-        rv = (*ss->authCertificate)(ss->authCertificateArg, ss->fd,
-                                    (PRBool)(!sidHit), PR_FALSE);
-        if (rv) {
-            if (ss->handleBadCert) {
-                rv = (*ss->handleBadCert)(ss->badCertArg, ss->fd);
-                if (rv) {
-                    if (rv == SECWouldBlock) {
-                        SSL_DBG(("%d: SSL[%d]: SSL2 bad cert handler returned "
-                                 "SECWouldBlock",
-                                 SSL_GETPID(), ss->fd));
-                        PORT_SetError(SSL_ERROR_FEATURE_NOT_SUPPORTED_FOR_SSL2);
-                        rv = SECFailure;
-                    } else {
-                        /* cert is bad */
-                        SSL_DBG(("%d: SSL[%d]: server certificate is no good: error=%d",
-                                 SSL_GETPID(), ss->fd, PORT_GetError()));
-                    }
-                    goto loser;
-                }
-                /* cert is good */
-            } else {
-                SSL_DBG(("%d: SSL[%d]: server certificate is no good: error=%d",
-                         SSL_GETPID(), ss->fd, PORT_GetError()));
-                goto loser;
-            }
-        }
-    }
-    /*
-    ** At this point we have a completed session key and our session
-    ** cipher is setup and ready to go. Switch to encrypted write routine
-    ** as all future message data is to be encrypted.
-    */
-    ssl2_UseEncryptedSendFunc(ss);
-
-    rv = ssl2_TryToFinish(ss);
-    if (rv != SECSuccess)
-        goto loser;
-
-    ss->gs.recordLen = 0;
-
-    ssl_ReleaseRecvBufLock(ss);
-
-    if (ss->handshake == 0) {
-        return SECSuccess;
-    }
-
-    SSL_TRC(5, ("%d: SSL[%d]: got server-hello, required=0x%d got=0x%x",
-                SSL_GETPID(), ss->fd, ss->sec.ci.requiredElements,
-                ss->sec.ci.elements));
-    ss->handshake = ssl_GatherRecord1stHandshake;
-    ss->nextHandshake = ssl2_HandleVerifyMessage;
-    return SECSuccess;
-
-bad_server:
-    PORT_SetError(SSL_ERROR_BAD_SERVER);
-/* FALL THROUGH */
-
-loser:
-    ssl_ReleaseRecvBufLock(ss);
-    return SECFailure;
-}
-
-/* Sends out the initial client Hello message on the connection.
- * Acquires and releases the socket's xmitBufLock.
- */
-SECStatus
-ssl2_BeginClientHandshake(sslSocket *ss)
-{
-    sslSessionID *sid;
-    PRUint8 *msg;
-    PRUint8 *cp;
-    PRUint8 *localCipherSpecs = NULL;
-    unsigned int localCipherSize;
-    unsigned int i;
-    int sendLen, sidLen = 0;
-    SECStatus rv;
-    TLSExtensionData *xtnData;
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    ss->sec.isServer = 0;
-    ss->sec.sendSequence = 0;
-    ss->sec.rcvSequence = 0;
-    ssl_ChooseSessionIDProcs(&ss->sec);
-
-    if (!ss->cipherSpecs) {
-        rv = ssl2_ConstructCipherSpecs(ss);
-        if (rv != SECSuccess)
-            goto loser;
-    }
-
-    /* count the SSL2 and SSL3 enabled ciphers.
-     * if either is zero, clear the socket's enable for that protocol.
-     */
-    rv = ssl2_CheckConfigSanity(ss);
-    if (rv != SECSuccess)
-        goto loser;
-
-    /* Get peer name of server */
-    rv = ssl_GetPeerInfo(ss);
-    if (rv < 0) {
-#ifdef HPUX11
-        /*
-         * On some HP-UX B.11.00 systems, getpeername() occasionally
-         * fails with ENOTCONN after a successful completion of
-         * non-blocking connect.  I found that if we do a write()
-         * and then retry getpeername(), it will work.
-         */
-        if (PR_GetError() == PR_NOT_CONNECTED_ERROR) {
-            char dummy;
-            (void)PR_Write(ss->fd->lower, &dummy, 0);
-            rv = ssl_GetPeerInfo(ss);
-            if (rv < 0) {
-                goto loser;
-            }
-        }
-#else
-        goto loser;
-#endif
-    }
-
-    SSL_TRC(3, ("%d: SSL[%d]: sending client-hello", SSL_GETPID(), ss->fd));
-
-    /* Try to find server in our session-id cache */
-    if (ss->opt.noCache) {
-        sid = NULL;
-    } else {
-        sid = ssl_LookupSID(&ss->sec.ci.peer, ss->sec.ci.port, ss->peerID,
-                            ss->url);
-    }
-    while (sid) { /* this isn't really a loop */
-        PRBool sidVersionEnabled =
-            (!SSL3_ALL_VERSIONS_DISABLED(&ss->vrange) &&
-             sid->version >= ss->vrange.min &&
-             sid->version <= ss->vrange.max) ||
-            (sid->version < SSL_LIBRARY_VERSION_3_0 && ss->opt.enableSSL2);
-
-        /* if we're not doing this SID's protocol any more, drop it. */
-        if (!sidVersionEnabled) {
-            if (ss->sec.uncache)
-                ss->sec.uncache(sid);
-            ssl_FreeSID(sid);
-            sid = NULL;
-            break;
-        }
-        if (sid->version < SSL_LIBRARY_VERSION_3_0) {
-            /* If the cipher in this sid is not enabled, drop it. */
-            for (i = 0; i < ss->sizeCipherSpecs; i += 3) {
-                if (ss->cipherSpecs[i] == sid->u.ssl2.cipherType)
-                    break;
-            }
-            if (i >= ss->sizeCipherSpecs) {
-                if (ss->sec.uncache)
-                    ss->sec.uncache(sid);
-                ssl_FreeSID(sid);
-                sid = NULL;
-                break;
-            }
-        }
-        sidLen = sizeof(sid->u.ssl2.sessionID);
-        PRINT_BUF(4, (ss, "client, found session-id:", sid->u.ssl2.sessionID,
-                      sidLen));
-        ss->version = sid->version;
-        PORT_Assert(!ss->sec.localCert);
-        if (ss->sec.localCert) {
-            CERT_DestroyCertificate(ss->sec.localCert);
-        }
-        ss->sec.localCert = CERT_DupCertificate(sid->localCert);
-        break; /* this isn't really a loop */
-    }
-    if (!sid) {
-        sidLen = 0;
-        sid = PORT_ZNew(sslSessionID);
-        if (!sid) {
-            goto loser;
-        }
-        sid->references = 1;
-        sid->cached = never_cached;
-        sid->addr = ss->sec.ci.peer;
-        sid->port = ss->sec.ci.port;
-        if (ss->peerID != NULL) {
-            sid->peerID = PORT_Strdup(ss->peerID);
-        }
-        if (ss->url != NULL) {
-            sid->urlSvrName = PORT_Strdup(ss->url);
-        }
-    }
-    ss->sec.ci.sid = sid;
-
-    PORT_Assert(sid != NULL);
-
-    if ((sid->version >= SSL_LIBRARY_VERSION_3_0 || !ss->opt.v2CompatibleHello) &&
-        !SSL3_ALL_VERSIONS_DISABLED(&ss->vrange)) {
-        ss->gs.state = GS_INIT;
-        ss->handshake = ssl_GatherRecord1stHandshake;
-
-        /* ssl3_SendClientHello will override this if it succeeds. */
-        ss->version = SSL_LIBRARY_VERSION_3_0;
-
-        ssl_GetSSL3HandshakeLock(ss);
-        ssl_GetXmitBufLock(ss);
-        rv = ssl3_SendClientHello(ss, PR_FALSE);
-        ssl_ReleaseXmitBufLock(ss);
-        ssl_ReleaseSSL3HandshakeLock(ss);
-
-        return rv;
-    }
-#ifndef NSS_DISABLE_ECC
-    /* ensure we don't neogtiate ECC cipher suites with SSL2 hello */
-    ssl3_DisableECCSuites(ss, NULL); /* disable all ECC suites */
-    if (ss->cipherSpecs != NULL) {
-        PORT_Free(ss->cipherSpecs);
-        ss->cipherSpecs = NULL;
-        ss->sizeCipherSpecs = 0;
-    }
-#endif /* NSS_DISABLE_ECC */
-
-    if (!ss->cipherSpecs) {
-        rv = ssl2_ConstructCipherSpecs(ss);
-        if (rv < 0) {
-            return rv;
-        }
-    }
-    localCipherSpecs = ss->cipherSpecs;
-    localCipherSize = ss->sizeCipherSpecs;
-
-    /* Add 3 for SCSV */
-    sendLen = SSL_HL_CLIENT_HELLO_HBYTES + localCipherSize + 3 + sidLen +
-              SSL_CHALLENGE_BYTES;
-
-    /* Generate challenge bytes for server */
-    PK11_GenerateRandom(ss->sec.ci.clientChallenge, SSL_CHALLENGE_BYTES);
-
-    ssl_GetXmitBufLock(ss); /***************************************/
-
-    rv = ssl2_GetSendBuffer(ss, sendLen);
-    if (rv)
-        goto unlock_loser;
-
-    /* Construct client-hello message */
-    cp = msg = ss->sec.ci.sendBuf.buf;
-    msg[0] = SSL_MT_CLIENT_HELLO;
-    ss->clientHelloVersion = SSL3_ALL_VERSIONS_DISABLED(&ss->vrange) ? SSL_LIBRARY_VERSION_2
-                                                                     : ss->vrange.max;
-
-    msg[1] = MSB(ss->clientHelloVersion);
-    msg[2] = LSB(ss->clientHelloVersion);
-    /* Add 3 for SCSV */
-    msg[3] = MSB(localCipherSize + 3);
-    msg[4] = LSB(localCipherSize + 3);
-    msg[5] = MSB(sidLen);
-    msg[6] = LSB(sidLen);
-    msg[7] = MSB(SSL_CHALLENGE_BYTES);
-    msg[8] = LSB(SSL_CHALLENGE_BYTES);
-    cp += SSL_HL_CLIENT_HELLO_HBYTES;
-    PORT_Memcpy(cp, localCipherSpecs, localCipherSize);
-    cp += localCipherSize;
-    /*
-     * Add SCSV.  SSL 2.0 cipher suites are listed before SSL 3.0 cipher
-     * suites in localCipherSpecs for compatibility with SSL 2.0 servers.
-     * Since SCSV looks like an SSL 3.0 cipher suite, we can't add it at
-     * the beginning.
-     */
-    cp[0] = 0x00;
-    cp[1] = 0x00;
-    cp[2] = 0xff;
-    cp += 3;
-    if (sidLen) {
-        PORT_Memcpy(cp, sid->u.ssl2.sessionID, sidLen);
-        cp += sidLen;
-    }
-    PORT_Memcpy(cp, ss->sec.ci.clientChallenge, SSL_CHALLENGE_BYTES);
-
-    /* Send it to the server */
-    DUMP_MSG(29, (ss, msg, sendLen));
-    ss->handshakeBegun = 1;
-    rv = (*ss->sec.send)(ss, msg, sendLen, 0);
-
-    ssl_ReleaseXmitBufLock(ss); /***************************************/
-
-    if (rv < 0) {
-        goto loser;
-    }
-
-    rv = ssl3_StartHandshakeHash(ss, msg, sendLen);
-    if (rv < 0) {
-        goto loser;
-    }
-
-    /*
-     * Since we sent the SCSV, pretend we sent empty RI extension.  We need
-     * to record the extension has been advertised after ssl3_InitState has
-     * been called, which ssl3_StartHandshakeHash took care for us above.
-     */
-    xtnData = &ss->xtnData;
-    xtnData->advertised[xtnData->numAdvertised++] = ssl_renegotiation_info_xtn;
-
-    /* Setup to receive servers hello message */
-    ssl_GetRecvBufLock(ss);
-    ss->gs.recordLen = 0;
-    ssl_ReleaseRecvBufLock(ss);
-
-    ss->handshake = ssl_GatherRecord1stHandshake;
-    ss->nextHandshake = ssl2_HandleServerHelloMessage;
-    return SECSuccess;
-
-unlock_loser:
-    ssl_ReleaseXmitBufLock(ss);
-loser:
-    return SECFailure;
-}
-
-/************************************************************************/
-
-/* Handle the CLIENT-MASTER-KEY message.
-** Acquires and releases RecvBufLock.
-** Called from ssl2_HandleClientHelloMessage().
-*/
-static SECStatus
-ssl2_HandleClientSessionKeyMessage(sslSocket *ss)
-{
-    PRUint8 *data;
-    unsigned int caLen;
-    unsigned int ckLen;
-    unsigned int ekLen;
-    unsigned int keyBits;
-    int cipher;
-    SECStatus rv;
-
-    ssl_GetRecvBufLock(ss);
-
-    data = ss->gs.buf.buf + ss->gs.recordOffset;
-    DUMP_MSG(29, (ss, data, ss->gs.recordLen));
-
-    if ((ss->gs.recordLen < SSL_HL_CLIENT_MASTER_KEY_HBYTES) ||
-        (data[0] != SSL_MT_CLIENT_MASTER_KEY)) {
-        goto bad_client;
-    }
-    cipher = data[1];
-    keyBits = (data[2] << 8) | data[3];
-    ckLen = (data[4] << 8) | data[5];
-    ekLen = (data[6] << 8) | data[7];
-    caLen = (data[8] << 8) | data[9];
-
-    SSL_TRC(5, ("%d: SSL[%d]: session-key, cipher=%d keyBits=%d ckLen=%d ekLen=%d caLen=%d",
-                SSL_GETPID(), ss->fd, cipher, keyBits, ckLen, ekLen, caLen));
-
-    if (ss->gs.recordLen <
-        SSL_HL_CLIENT_MASTER_KEY_HBYTES + ckLen + ekLen + caLen) {
-        SSL_DBG(("%d: SSL[%d]: protocol size mismatch dataLen=%d",
-                 SSL_GETPID(), ss->fd, ss->gs.recordLen));
-        goto bad_client;
-    }
-
-    /* Use info from client to setup session key */
-    rv = ssl2_ServerSetupSessionCypher(ss, cipher, keyBits,
-                                       data + SSL_HL_CLIENT_MASTER_KEY_HBYTES,
-                                       ckLen,
-                                       data + SSL_HL_CLIENT_MASTER_KEY_HBYTES + ckLen,
-                                       ekLen,
-                                       data + SSL_HL_CLIENT_MASTER_KEY_HBYTES + ckLen + ekLen,
-                                       caLen);
-    ss->gs.recordLen = 0; /* we're done with this record. */
-
-    ssl_ReleaseRecvBufLock(ss);
-
-    if (rv != SECSuccess) {
-        goto loser;
-    }
-    ss->sec.ci.elements |= CIS_HAVE_MASTER_KEY;
-    ssl2_UseEncryptedSendFunc(ss);
-
-    /* Send server verify message now that keys are established */
-    rv = ssl2_SendServerVerifyMessage(ss);
-    if (rv != SECSuccess)
-        goto loser;
-
-    rv = ssl2_TryToFinish(ss);
-    if (rv != SECSuccess)
-        goto loser;
-    if (ss->handshake == 0) {
-        return SECSuccess;
-    }
-
-    SSL_TRC(5, ("%d: SSL[%d]: server: waiting for elements=0x%d",
-                SSL_GETPID(), ss->fd,
-                ss->sec.ci.requiredElements ^ ss->sec.ci.elements));
-    ss->handshake = ssl_GatherRecord1stHandshake;
-    ss->nextHandshake = ssl2_HandleMessage;
-
-    return ssl2_TriggerNextMessage(ss);
-
-bad_client:
-    ssl_ReleaseRecvBufLock(ss);
-    PORT_SetError(SSL_ERROR_BAD_CLIENT);
-/* FALLTHROUGH */
-
-loser:
-    return SECFailure;
-}
-
-/*
-** Handle the initial hello message from the client
-**
-** not static because ssl2_GatherData() tests ss->nextHandshake for this value.
-*/
-SECStatus
-ssl2_HandleClientHelloMessage(sslSocket *ss)
-{
-    sslSessionID *sid;
-    sslServerCerts *sc;
-    CERTCertificate *serverCert;
-    PRUint8 *msg;
-    PRUint8 *data;
-    PRUint8 *cs;
-    PRUint8 *sd;
-    PRUint8 *cert = NULL;
-    PRUint8 *challenge;
-    unsigned int challengeLen;
-    SECStatus rv;
-    int csLen;
-    int sendLen;
-    int sdLen;
-    int certLen;
-    int pid;
-    int sent;
-    int gotXmitBufLock = 0;
-#if defined(SOLARIS) && defined(i386)
-    volatile PRUint8 hit;
-#else
-    int hit;
-#endif
-    PRUint8 csImpl[sizeof implementedCipherSuites];
-
-    PORT_Assert(ss->opt.noLocks || ssl_Have1stHandshakeLock(ss));
-
-    sc = ss->serverCerts + kt_rsa;
-    serverCert = sc->serverCert;
-
-    ssl_GetRecvBufLock(ss);
-
-    data = ss->gs.buf.buf + ss->gs.recordOffset;
-    DUMP_MSG(29, (ss, data, ss->gs.recordLen));
-
-    /* Make sure first message has some data and is the client hello message */
-    if ((ss->gs.recordLen < SSL_HL_CLIENT_HELLO_HBYTES) ||
-        (data[0] != SSL_MT_CLIENT_HELLO)) {
-        goto bad_client;
-    }
-
-    /* Get peer name of client */
-    rv = ssl_GetPeerInfo(ss);
-    if (rv != SECSuccess) {
-        goto loser;
-    }
-
-    /* Examine version information */
-    /*
-     * See if this might be a V2 client hello asking to use the V3 protocol
-     */
-    if ((data[0] == SSL_MT_CLIENT_HELLO) &&
-        (data[1] >= MSB(SSL_LIBRARY_VERSION_3_0)) &&
-        !SSL3_ALL_VERSIONS_DISABLED(&ss->vrange)) {
-        rv = ssl3_HandleV2ClientHello(ss, data, ss->gs.recordLen);
-        if (rv != SECFailure) { /* Success */
-            ss->handshake = NULL;
-            ss->nextHandshake = ssl_GatherRecord1stHandshake;
-            ss->securityHandshake = NULL;
-            ss->gs.state = GS_INIT;
-
-            /* ssl3_HandleV3ClientHello has set ss->version,
-            ** and has gotten us a brand new sid.
-            */
-            ss->sec.ci.sid->version = ss->version;
-        }
-        ssl_ReleaseRecvBufLock(ss);
-        return rv;
-    }
-    /* Previously, there was a test here to see if SSL2 was enabled.
-    ** If not, an error code was set, and SECFailure was returned,
-    ** without sending any error code to the other end of the connection.
-    ** That test has been removed.  If SSL2 has been disabled, there
-    ** should be no SSL2 ciphers enabled, and consequently, the code
-    ** below should send the ssl2 error message SSL_PE_NO_CYPHERS.
-    ** We now believe this is the correct thing to do, even when SSL2
-    ** has been explicitly disabled by the application.
-    */
-
-    /* Extract info from message */
-    ss->version = (data[1] << 8) | data[2];
-
-    /* If some client thinks ssl v2 is 2.0 instead of 0.2, we'll allow it.  */
-    if (ss->version >= SSL_LIBRARY_VERSION_3_0) {
-        ss->version = SSL_LIBRARY_VERSION_2;
-    }
-
-    csLen = (data[3] << 8) | data[4];
-    sdLen = (data[5] << 8) | data[6];
-    challengeLen = (data[7] << 8) | data[8];
-    cs = data + SSL_HL_CLIENT_HELLO_HBYTES;
-    sd = cs + csLen;
-    challenge = sd + sdLen;
-    PRINT_BUF(7, (ss, "server, client session-id value:", sd, sdLen));
-
-    if (!csLen || (csLen % 3) != 0 ||
-        (sdLen != 0 && sdLen != SSL2_SESSIONID_BYTES) ||
-        challengeLen < SSL_MIN_CHALLENGE_BYTES ||
-        challengeLen > SSL_MAX_CHALLENGE_BYTES ||
-        (unsigned)ss->gs.recordLen !=
-            SSL_HL_CLIENT_HELLO_HBYTES + csLen + sdLen + challengeLen) {
-        SSL_DBG(("%d: SSL[%d]: bad client hello message, len=%d should=%d",
-                 SSL_GETPID(), ss->fd, ss->gs.recordLen,
-                 SSL_HL_CLIENT_HELLO_HBYTES + csLen + sdLen + challengeLen));
-        goto bad_client;
-    }
-
-    SSL_TRC(3, ("%d: SSL[%d]: client version is %x",
-                SSL_GETPID(), ss->fd, ss->version));
-    if (ss->version != SSL_LIBRARY_VERSION_2) {
-        if (ss->version > SSL_LIBRARY_VERSION_2) {
-            /*
-            ** Newer client than us. Things are ok because new clients
-            ** are required to be backwards compatible with old servers.
-            ** Change version number to our version number so that client
-            ** knows whats up.
-            */
-            ss->version = SSL_LIBRARY_VERSION_2;
-        } else {
-            SSL_TRC(1, ("%d: SSL[%d]: client version is %x (we are %x)",
-                        SSL_GETPID(), ss->fd, ss->version, SSL_LIBRARY_VERSION_2));
-            PORT_SetError(SSL_ERROR_UNSUPPORTED_VERSION);
-            goto loser;
-        }
-    }
-
-    /* Qualify cipher specs before returning them to client */
-    csLen = ssl2_QualifyCypherSpecs(ss, cs, csLen);
-    if (csLen == 0) {
-        /* no overlap, send client our list of supported SSL v2 ciphers. */
-        cs = csImpl;
-        csLen = sizeof implementedCipherSuites;
-        PORT_Memcpy(cs, implementedCipherSuites, csLen);
-        csLen = ssl2_QualifyCypherSpecs(ss, cs, csLen);
-        if (csLen == 0) {
-            /* We don't support any SSL v2 ciphers! */
-            ssl2_SendErrorMessage(ss, SSL_PE_NO_CYPHERS);
-            PORT_SetError(SSL_ERROR_NO_CYPHER_OVERLAP);
-            goto loser;
-        }
-        /* Since this handhsake is going to fail, don't cache it. */
-        ss->opt.noCache = 1;
-    }
-
-    /* Squirrel away the challenge for later */
-    PORT_Memcpy(ss->sec.ci.clientChallenge, challenge, challengeLen);
-
-    /* Examine message and see if session-id is good */
-    ss->sec.ci.elements = 0;
-    if (sdLen > 0 && !ss->opt.noCache) {
-        SSL_TRC(7, ("%d: SSL[%d]: server, lookup client session-id for 0x%08x%08x%08x%08x",
-                    SSL_GETPID(), ss->fd, ss->sec.ci.peer.pr_s6_addr32[0],
-                    ss->sec.ci.peer.pr_s6_addr32[1],
-                    ss->sec.ci.peer.pr_s6_addr32[2],
-                    ss->sec.ci.peer.pr_s6_addr32[3]));
-        sid = (*ssl_sid_lookup)(&ss->sec.ci.peer, sd, sdLen, ss->dbHandle);
-    } else {
-        sid = NULL;
-    }
-    if (sid) {
-        /* Got a good session-id. Short cut! */
-        SSL_TRC(1, ("%d: SSL[%d]: server, using session-id for 0x%08x (age=%d)",
-                    SSL_GETPID(), ss->fd, ss->sec.ci.peer,
-                    ssl_Time() - sid->creationTime));
-        PRINT_BUF(1, (ss, "session-id value:", sd, sdLen));
-        ss->sec.ci.sid = sid;
-        ss->sec.ci.elements = CIS_HAVE_MASTER_KEY;
-        hit = 1;
-        certLen = 0;
-        csLen = 0;
-
-        ss->sec.authAlgorithm = sid->authAlgorithm;
-        ss->sec.authKeyBits = sid->authKeyBits;
-        ss->sec.keaType = sid->keaType;
-        ss->sec.keaKeyBits = sid->keaKeyBits;
-
-        rv = ssl2_CreateSessionCypher(ss, sid, PR_FALSE);
-        if (rv != SECSuccess) {
-            goto loser;
-        }
-    } else {
-        SECItem *derCert = &serverCert->derCert;
-
-        SSL_TRC(7, ("%d: SSL[%d]: server, lookup nonce missed",
-                    SSL_GETPID(), ss->fd));
-        if (!serverCert) {
-            SET_ERROR_CODE
-            goto loser;
-        }
-        hit = 0;
-        sid = PORT_ZNew(sslSessionID);
-        if (!sid) {
-            goto loser;
-        }
-        sid->references = 1;
-        sid->addr = ss->sec.ci.peer;
-        sid->port = ss->sec.ci.port;
-
-        /* Invent a session-id */
-        ss->sec.ci.sid = sid;
-        PK11_GenerateRandom(sid->u.ssl2.sessionID + 2, SSL2_SESSIONID_BYTES - 2);
-
-        pid = SSL_GETPID();
-        sid->u.ssl2.sessionID[0] = MSB(pid);
-        sid->u.ssl2.sessionID[1] = LSB(pid);
-        cert = derCert->data;
-        certLen = derCert->len;
-
-        /* pretend that server sids remember the local cert. */
-        PORT_Assert(!sid->localCert);
-        if (sid->localCert) {
-            CERT_DestroyCertificate(sid->localCert);
-        }
-        sid->localCert = CERT_DupCertificate(serverCert);
-
-        ss->sec.authAlgorithm = ssl_sign_rsa;
-        ss->sec.keaType = ssl_kea_rsa;
-        ss->sec.keaKeyBits =
-            ss->sec.authKeyBits = ss->serverCerts[kt_rsa].serverKeyBits;
-    }
-
-    /* server sids don't remember the local cert, so whether we found
-    ** a sid or not, just "remember" we used the rsa server cert.
-    */
-    if (ss->sec.localCert) {
-        CERT_DestroyCertificate(ss->sec.localCert);
-    }
-    ss->sec.localCert = CERT_DupCertificate(serverCert);
-
-    /* Build up final list of required elements */
-    ss->sec.ci.requiredElements = CIS_HAVE_MASTER_KEY | CIS_HAVE_FINISHED;
-    if (ss->opt.requestCertificate) {
-        ss->sec.ci.requiredElements |= CIS_HAVE_CERTIFICATE;
-    }
-    ss->sec.ci.sentElements = 0;
-
-    /* Send hello message back to client */
-    sendLen = SSL_HL_SERVER_HELLO_HBYTES + certLen + csLen +
-              SSL_CONNECTIONID_BYTES;
-
-    ssl_GetXmitBufLock(ss);
-    gotXmitBufLock = 1;
-    rv = ssl2_GetSendBuffer(ss, sendLen);
-    if (rv != SECSuccess) {
-        goto loser;
-    }
-
-    SSL_TRC(3, ("%d: SSL[%d]: sending server-hello (%d)",
-                SSL_GETPID(), ss->fd, sendLen));
-
-    msg = ss->sec.ci.sendBuf.buf;
-    msg[0] = SSL_MT_SERVER_HELLO;
-    msg[1] = hit;
-    msg[2] = SSL_CT_X509_CERTIFICATE;
-    msg[3] = MSB(ss->version);
-    msg[4] = LSB(ss->version);
-    msg[5] = MSB(certLen);
-    msg[6] = LSB(certLen);
-    msg[7] = MSB(csLen);
-    msg[8] = LSB(csLen);
-    msg[9] = MSB(SSL_CONNECTIONID_BYTES);
-    msg[10] = LSB(SSL_CONNECTIONID_BYTES);
-    if (certLen) {
-        PORT_Memcpy(msg + SSL_HL_SERVER_HELLO_HBYTES, cert, certLen);
-    }
-    if (csLen) {
-        PORT_Memcpy(msg + SSL_HL_SERVER_HELLO_HBYTES + certLen, cs, csLen);
-    }
-    PORT_Memcpy(msg + SSL_HL_SERVER_HELLO_HBYTES + certLen + csLen,
-                ss->sec.ci.connectionID, SSL_CONNECTIONID_BYTES);
-
-    DUMP_MSG(29, (ss, msg, sendLen));
-
-    ss->handshakeBegun = 1;
-    sent = (*ss->sec.send)(ss, msg, sendLen, 0);
-    if (sent < 0) {
-        goto loser;
-    }
-    ssl_ReleaseXmitBufLock(ss);
-    gotXmitBufLock = 0;
-
-    ss->gs.recordLen = 0;
-    ss->handshake = ssl_GatherRecord1stHandshake;
-    if (hit) {
-        /* Old SID Session key is good. Go encrypted */
-        ssl2_UseEncryptedSendFunc(ss);
-
-        /* Send server verify message now that keys are established */
-        rv = ssl2_SendServerVerifyMessage(ss);
-        if (rv != SECSuccess)
-            goto loser;
-
-        ss->nextHandshake = ssl2_HandleMessage;
-        ssl_ReleaseRecvBufLock(ss);
-        rv = ssl2_TriggerNextMessage(ss);
-        return rv;
-    }
-    ss->nextHandshake = ssl2_HandleClientSessionKeyMessage;
-    ssl_ReleaseRecvBufLock(ss);
-    return SECSuccess;
-
-bad_client:
-    PORT_SetError(SSL_ERROR_BAD_CLIENT);
-/* FALLTHROUGH */
-
-loser:
-    if (gotXmitBufLock) {
-        ssl_ReleaseXmitBufLock(ss);
-        gotXmitBufLock = 0;
-    }
-    SSL_TRC(10, ("%d: SSL[%d]: server, wait for client-hello lossage",
-                 SSL_GETPID(), ss->fd));
-    ssl_ReleaseRecvBufLock(ss);
-    return SECFailure;
-}
-
-SECStatus
-ssl2_BeginServerHandshake(sslSocket *ss)
-{
-    SECStatus rv;
-    sslServerCerts *rsaAuth = ss->serverCerts + kt_rsa;
-
-    ss->sec.isServer = 1;
-    ssl_ChooseSessionIDProcs(&ss->sec);
-    ss->sec.sendSequence = 0;
-    ss->sec.rcvSequence = 0;
-
-    /* don't turn on SSL2 if we don't have an RSA key and cert */
-    if (!rsaAuth->serverKeyPair || !rsaAuth->SERVERKEY ||
-        !rsaAuth->serverCert) {
-        ss->opt.enableSSL2 = PR_FALSE;
-    }
-
-    if (!ss->cipherSpecs) {
-        rv = ssl2_ConstructCipherSpecs(ss);
-        if (rv != SECSuccess)
-            goto loser;
-    }
-
-    /* count the SSL2 and SSL3 enabled ciphers.
-     * if either is zero, clear the socket's enable for that protocol.
-     */
-    rv = ssl2_CheckConfigSanity(ss);
-    if (rv != SECSuccess)
-        goto loser;
-
-    /*
-    ** Generate connection-id. Always do this, even if things fail
-    ** immediately. This way the random number generator is always
-    ** rolling around, every time we get a connection.
-    */
-    PK11_GenerateRandom(ss->sec.ci.connectionID,
-                        sizeof(ss->sec.ci.connectionID));
-
-    ss->gs.recordLen = 0;
-    ss->handshake = ssl_GatherRecord1stHandshake;
-    ss->nextHandshake = ssl2_HandleClientHelloMessage;
-    return SECSuccess;
-
-loser:
-    return SECFailure;
-}
-
-/* This function doesn't really belong in this file.
-** It's here to keep AIX compilers from optimizing it away,
-** and not including it in the DSO.
-*/
-
-#include "nss.h"
-extern const char __nss_ssl_version[];
-
-PRBool
-NSSSSL_VersionCheck(const char *importedVersion)
-{
-#define NSS_VERSION_VARIABLE __nss_ssl_version
-#include "verref.h"
-
-    /*
-     * This is the secret handshake algorithm.
-     *
-     * This release has a simple version compatibility
-     * check algorithm.  This release is not backward
-     * compatible with previous major releases.  It is
-     * not compatible with future major, minor, or
-     * patch releases.
-     */
-    return NSS_VersionCheck(importedVersion);
-}
-
-const char *
-NSSSSL_GetVersion(void)
-{
-    return NSS_VERSION;
-}