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gecko-dev/security/nss/lib/ssl/sslsock.c
Kai Engert 531a2c1719 Bug 1194135, Update Mozilla to NSS 3.20, r=mt
2015-08-13 11:31:23 +02:00

3243 lines
96 KiB
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/*
* vtables (and methods that call through them) for the 4 types of
* SSLSockets supported. Only one type is still supported.
* Various other functions.
*
* 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 "seccomon.h"
#include "cert.h"
#include "keyhi.h"
#include "ssl.h"
#include "sslimpl.h"
#include "sslproto.h"
#include "nspr.h"
#include "private/pprio.h"
#ifndef NO_PKCS11_BYPASS
#include "blapi.h"
#endif
#include "nss.h"
#include "pk11pqg.h"
#define SET_ERROR_CODE /* reminder */
static const sslSocketOps ssl_default_ops = { /* No SSL. */
ssl_DefConnect,
NULL,
ssl_DefBind,
ssl_DefListen,
ssl_DefShutdown,
ssl_DefClose,
ssl_DefRecv,
ssl_DefSend,
ssl_DefRead,
ssl_DefWrite,
ssl_DefGetpeername,
ssl_DefGetsockname
};
static const sslSocketOps ssl_secure_ops = { /* SSL. */
ssl_SecureConnect,
NULL,
ssl_DefBind,
ssl_DefListen,
ssl_SecureShutdown,
ssl_SecureClose,
ssl_SecureRecv,
ssl_SecureSend,
ssl_SecureRead,
ssl_SecureWrite,
ssl_DefGetpeername,
ssl_DefGetsockname
};
/*
** default settings for socket enables
*/
static sslOptions ssl_defaults = {
{ siBuffer, NULL, 0 }, /* nextProtoNego */
PR_TRUE, /* useSecurity */
PR_FALSE, /* useSocks */
PR_FALSE, /* requestCertificate */
2, /* requireCertificate */
PR_FALSE, /* handshakeAsClient */
PR_FALSE, /* handshakeAsServer */
PR_FALSE, /* enableSSL2 */ /* now defaults to off in NSS 3.13 */
PR_FALSE, /* unusedBit9 */
PR_FALSE, /* unusedBit10 */
PR_FALSE, /* noCache */
PR_FALSE, /* fdx */
PR_FALSE, /* v2CompatibleHello */ /* now defaults to off in NSS 3.13 */
PR_TRUE, /* detectRollBack */
PR_FALSE, /* noStepDown */
PR_FALSE, /* bypassPKCS11 */
PR_FALSE, /* noLocks */
PR_FALSE, /* enableSessionTickets */
PR_FALSE, /* enableDeflate */
2, /* enableRenegotiation (default: requires extension) */
PR_FALSE, /* requireSafeNegotiation */
PR_FALSE, /* enableFalseStart */
PR_TRUE, /* cbcRandomIV */
PR_FALSE, /* enableOCSPStapling */
PR_TRUE, /* enableNPN */
PR_FALSE, /* enableALPN */
PR_TRUE, /* reuseServerECDHEKey */
PR_FALSE, /* enableFallbackSCSV */
PR_TRUE, /* enableServerDhe */
};
/*
* default range of enabled SSL/TLS protocols
*/
static SSLVersionRange versions_defaults_stream = {
SSL_LIBRARY_VERSION_TLS_1_0,
SSL_LIBRARY_VERSION_TLS_1_2
};
static SSLVersionRange versions_defaults_datagram = {
SSL_LIBRARY_VERSION_TLS_1_1,
SSL_LIBRARY_VERSION_TLS_1_2
};
#define VERSIONS_DEFAULTS(variant) \
(variant == ssl_variant_stream ? &versions_defaults_stream : \
&versions_defaults_datagram)
sslSessionIDLookupFunc ssl_sid_lookup;
sslSessionIDCacheFunc ssl_sid_cache;
sslSessionIDUncacheFunc ssl_sid_uncache;
static PRBool ssl_inited = PR_FALSE;
static PRDescIdentity ssl_layer_id;
PRBool locksEverDisabled; /* implicitly PR_FALSE */
PRBool ssl_force_locks; /* implicitly PR_FALSE */
int ssl_lock_readers = 1; /* default true. */
char ssl_debug;
char ssl_trace;
FILE * ssl_trace_iob;
FILE * ssl_keylog_iob;
char lockStatus[] = "Locks are ENABLED. ";
#define LOCKSTATUS_OFFSET 10 /* offset of ENABLED */
/* SRTP_NULL_HMAC_SHA1_80 and SRTP_NULL_HMAC_SHA1_32 are not implemented. */
static const PRUint16 srtpCiphers[] = {
SRTP_AES128_CM_HMAC_SHA1_80,
SRTP_AES128_CM_HMAC_SHA1_32,
0
};
/* forward declarations. */
static sslSocket *ssl_NewSocket(PRBool makeLocks, SSLProtocolVariant variant);
static SECStatus ssl_MakeLocks(sslSocket *ss);
static void ssl_SetDefaultsFromEnvironment(void);
static PRStatus ssl_PushIOLayer(sslSocket *ns, PRFileDesc *stack,
PRDescIdentity id);
/************************************************************************/
/*
** Lookup a socket structure from a file descriptor.
** Only functions called through the PRIOMethods table should use this.
** Other app-callable functions should use ssl_FindSocket.
*/
static sslSocket *
ssl_GetPrivate(PRFileDesc *fd)
{
sslSocket *ss;
PORT_Assert(fd != NULL);
PORT_Assert(fd->methods->file_type == PR_DESC_LAYERED);
PORT_Assert(fd->identity == ssl_layer_id);
if (fd->methods->file_type != PR_DESC_LAYERED ||
fd->identity != ssl_layer_id) {
PORT_SetError(PR_BAD_DESCRIPTOR_ERROR);
return NULL;
}
ss = (sslSocket *)fd->secret;
/* Set ss->fd lazily. We can't rely on the value of ss->fd set by
* ssl_PushIOLayer because another PR_PushIOLayer call will switch the
* contents of the PRFileDesc pointed by ss->fd and the new layer.
* See bug 807250.
*/
ss->fd = fd;
return ss;
}
/* This function tries to find the SSL layer in the stack.
* It searches for the first SSL layer at or below the argument fd,
* and failing that, it searches for the nearest SSL layer above the
* argument fd. It returns the private sslSocket from the found layer.
*/
sslSocket *
ssl_FindSocket(PRFileDesc *fd)
{
PRFileDesc *layer;
sslSocket *ss;
PORT_Assert(fd != NULL);
PORT_Assert(ssl_layer_id != 0);
layer = PR_GetIdentitiesLayer(fd, ssl_layer_id);
if (layer == NULL) {
PORT_SetError(PR_BAD_DESCRIPTOR_ERROR);
return NULL;
}
ss = (sslSocket *)layer->secret;
/* Set ss->fd lazily. We can't rely on the value of ss->fd set by
* ssl_PushIOLayer because another PR_PushIOLayer call will switch the
* contents of the PRFileDesc pointed by ss->fd and the new layer.
* See bug 807250.
*/
ss->fd = layer;
return ss;
}
static sslSocket *
ssl_DupSocket(sslSocket *os)
{
sslSocket *ss;
SECStatus rv;
ss = ssl_NewSocket((PRBool)(!os->opt.noLocks), os->protocolVariant);
if (ss) {
ss->opt = os->opt;
ss->opt.useSocks = PR_FALSE;
ss->vrange = os->vrange;
ss->peerID = !os->peerID ? NULL : PORT_Strdup(os->peerID);
ss->url = !os->url ? NULL : PORT_Strdup(os->url);
ss->ops = os->ops;
ss->rTimeout = os->rTimeout;
ss->wTimeout = os->wTimeout;
ss->cTimeout = os->cTimeout;
ss->dbHandle = os->dbHandle;
/* copy ssl2&3 policy & prefs, even if it's not selected (yet) */
ss->allowedByPolicy = os->allowedByPolicy;
ss->maybeAllowedByPolicy= os->maybeAllowedByPolicy;
ss->chosenPreference = os->chosenPreference;
PORT_Memcpy(ss->cipherSuites, os->cipherSuites, sizeof os->cipherSuites);
PORT_Memcpy(ss->ssl3.dtlsSRTPCiphers, os->ssl3.dtlsSRTPCiphers,
sizeof(PRUint16) * os->ssl3.dtlsSRTPCipherCount);
ss->ssl3.dtlsSRTPCipherCount = os->ssl3.dtlsSRTPCipherCount;
ss->ssl3.dheWeakGroupEnabled = os->ssl3.dheWeakGroupEnabled;
ss->ssl3.numDHEGroups = os->ssl3.numDHEGroups;
if (os->ssl3.dheGroups) {
ss->ssl3.dheGroups = PORT_NewArray(SSLDHEGroupType,
os->ssl3.numDHEGroups);
if (!ss->ssl3.dheGroups) {
goto loser;
}
PORT_Memcpy(ss->ssl3.dheGroups, os->ssl3.dheGroups,
sizeof(SSLDHEGroupType) * os->ssl3.numDHEGroups);
} else {
ss->ssl3.dheGroups = NULL;
}
if (os->cipherSpecs) {
ss->cipherSpecs = (unsigned char*)PORT_Alloc(os->sizeCipherSpecs);
if (ss->cipherSpecs)
PORT_Memcpy(ss->cipherSpecs, os->cipherSpecs,
os->sizeCipherSpecs);
ss->sizeCipherSpecs = os->sizeCipherSpecs;
ss->preferredCipher = os->preferredCipher;
} else {
ss->cipherSpecs = NULL; /* produced lazily */
ss->sizeCipherSpecs = 0;
ss->preferredCipher = NULL;
}
if (ss->opt.useSecurity) {
/* This int should be SSLKEAType, but CC on Irix complains,
* during the for loop.
*/
int i;
sslServerCerts * oc = os->serverCerts;
sslServerCerts * sc = ss->serverCerts;
for (i=kt_null; i < kt_kea_size; i++, oc++, sc++) {
if (oc->serverCert && oc->serverCertChain) {
sc->serverCert = CERT_DupCertificate(oc->serverCert);
sc->serverCertChain = CERT_DupCertList(oc->serverCertChain);
if (!sc->serverCertChain)
goto loser;
} else {
sc->serverCert = NULL;
sc->serverCertChain = NULL;
}
sc->serverKeyPair = oc->serverKeyPair ?
ssl3_GetKeyPairRef(oc->serverKeyPair) : NULL;
if (oc->serverKeyPair && !sc->serverKeyPair)
goto loser;
sc->serverKeyBits = oc->serverKeyBits;
ss->certStatusArray[i] = !os->certStatusArray[i] ? NULL :
SECITEM_DupArray(NULL, os->certStatusArray[i]);
}
ss->stepDownKeyPair = !os->stepDownKeyPair ? NULL :
ssl3_GetKeyPairRef(os->stepDownKeyPair);
ss->ephemeralECDHKeyPair = !os->ephemeralECDHKeyPair ? NULL :
ssl3_GetKeyPairRef(os->ephemeralECDHKeyPair);
ss->dheKeyPair = !os->dheKeyPair ? NULL :
ssl3_GetKeyPairRef(os->dheKeyPair);
ss->dheParams = os->dheParams;
/*
* XXX the preceding CERT_ and SECKEY_ functions can fail and return NULL.
* XXX We should detect this, and not just march on with NULL pointers.
*/
ss->authCertificate = os->authCertificate;
ss->authCertificateArg = os->authCertificateArg;
ss->getClientAuthData = os->getClientAuthData;
ss->getClientAuthDataArg = os->getClientAuthDataArg;
ss->sniSocketConfig = os->sniSocketConfig;
ss->sniSocketConfigArg = os->sniSocketConfigArg;
ss->handleBadCert = os->handleBadCert;
ss->badCertArg = os->badCertArg;
ss->handshakeCallback = os->handshakeCallback;
ss->handshakeCallbackData = os->handshakeCallbackData;
ss->canFalseStartCallback = os->canFalseStartCallback;
ss->canFalseStartCallbackData = os->canFalseStartCallbackData;
ss->pkcs11PinArg = os->pkcs11PinArg;
/* Create security data */
rv = ssl_CopySecurityInfo(ss, os);
if (rv != SECSuccess) {
goto loser;
}
}
}
return ss;
loser:
ssl_FreeSocket(ss);
return NULL;
}
static void
ssl_DestroyLocks(sslSocket *ss)
{
/* Destroy locks. */
if (ss->firstHandshakeLock) {
PZ_DestroyMonitor(ss->firstHandshakeLock);
ss->firstHandshakeLock = NULL;
}
if (ss->ssl3HandshakeLock) {
PZ_DestroyMonitor(ss->ssl3HandshakeLock);
ss->ssl3HandshakeLock = NULL;
}
if (ss->specLock) {
NSSRWLock_Destroy(ss->specLock);
ss->specLock = NULL;
}
if (ss->recvLock) {
PZ_DestroyLock(ss->recvLock);
ss->recvLock = NULL;
}
if (ss->sendLock) {
PZ_DestroyLock(ss->sendLock);
ss->sendLock = NULL;
}
if (ss->xmitBufLock) {
PZ_DestroyMonitor(ss->xmitBufLock);
ss->xmitBufLock = NULL;
}
if (ss->recvBufLock) {
PZ_DestroyMonitor(ss->recvBufLock);
ss->recvBufLock = NULL;
}
}
/* Caller holds any relevant locks */
static void
ssl_DestroySocketContents(sslSocket *ss)
{
/* "i" should be of type SSLKEAType, but CC on IRIX complains during
* the for loop.
*/
int i;
/* Free up socket */
ssl_DestroySecurityInfo(&ss->sec);
ssl3_DestroySSL3Info(ss);
PORT_Free(ss->saveBuf.buf);
PORT_Free(ss->pendingBuf.buf);
ssl_DestroyGather(&ss->gs);
if (ss->peerID != NULL)
PORT_Free(ss->peerID);
if (ss->url != NULL)
PORT_Free((void *)ss->url); /* CONST */
if (ss->cipherSpecs) {
PORT_Free(ss->cipherSpecs);
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0;
}
/* Clean up server configuration */
for (i=kt_null; i < kt_kea_size; i++) {
sslServerCerts * sc = ss->serverCerts + i;
if (sc->serverCert != NULL)
CERT_DestroyCertificate(sc->serverCert);
if (sc->serverCertChain != NULL)
CERT_DestroyCertificateList(sc->serverCertChain);
if (sc->serverKeyPair != NULL)
ssl3_FreeKeyPair(sc->serverKeyPair);
if (ss->certStatusArray[i] != NULL) {
SECITEM_FreeArray(ss->certStatusArray[i], PR_TRUE);
ss->certStatusArray[i] = NULL;
}
}
if (ss->stepDownKeyPair) {
ssl3_FreeKeyPair(ss->stepDownKeyPair);
ss->stepDownKeyPair = NULL;
}
if (ss->ephemeralECDHKeyPair) {
ssl3_FreeKeyPair(ss->ephemeralECDHKeyPair);
ss->ephemeralECDHKeyPair = NULL;
}
if (ss->dheKeyPair) {
ssl3_FreeKeyPair(ss->dheKeyPair);
ss->dheKeyPair = NULL;
}
SECITEM_FreeItem(&ss->opt.nextProtoNego, PR_FALSE);
PORT_Assert(!ss->xtnData.sniNameArr);
if (ss->xtnData.sniNameArr) {
PORT_Free(ss->xtnData.sniNameArr);
ss->xtnData.sniNameArr = NULL;
}
}
/*
* free an sslSocket struct, and all the stuff that hangs off of it
*/
void
ssl_FreeSocket(sslSocket *ss)
{
/* Get every lock you can imagine!
** Caller already holds these:
** SSL_LOCK_READER(ss);
** SSL_LOCK_WRITER(ss);
*/
ssl_Get1stHandshakeLock(ss);
ssl_GetRecvBufLock(ss);
ssl_GetSSL3HandshakeLock(ss);
ssl_GetXmitBufLock(ss);
ssl_GetSpecWriteLock(ss);
ssl_DestroySocketContents(ss);
/* Release all the locks acquired above. */
SSL_UNLOCK_READER(ss);
SSL_UNLOCK_WRITER(ss);
ssl_Release1stHandshakeLock(ss);
ssl_ReleaseRecvBufLock(ss);
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_ReleaseXmitBufLock(ss);
ssl_ReleaseSpecWriteLock(ss);
ssl_DestroyLocks(ss);
#ifdef DEBUG
PORT_Memset(ss, 0x1f, sizeof *ss);
#endif
PORT_Free(ss);
return;
}
/************************************************************************/
SECStatus
ssl_EnableNagleDelay(sslSocket *ss, PRBool enabled)
{
PRFileDesc * osfd = ss->fd->lower;
SECStatus rv = SECFailure;
PRSocketOptionData opt;
opt.option = PR_SockOpt_NoDelay;
opt.value.no_delay = (PRBool)!enabled;
if (osfd->methods->setsocketoption) {
rv = (SECStatus) osfd->methods->setsocketoption(osfd, &opt);
} else {
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
}
return rv;
}
static void
ssl_ChooseOps(sslSocket *ss)
{
ss->ops = ss->opt.useSecurity ? &ssl_secure_ops : &ssl_default_ops;
}
/* Called from SSL_Enable (immediately below) */
static SECStatus
PrepareSocket(sslSocket *ss)
{
SECStatus rv = SECSuccess;
ssl_ChooseOps(ss);
return rv;
}
SECStatus
SSL_Enable(PRFileDesc *fd, int which, PRBool on)
{
return SSL_OptionSet(fd, which, on);
}
#ifndef NO_PKCS11_BYPASS
static const PRCallOnceType pristineCallOnce;
static PRCallOnceType setupBypassOnce;
static SECStatus SSL_BypassShutdown(void* appData, void* nssData)
{
/* unload freeBL shared library from memory */
BL_Unload();
setupBypassOnce = pristineCallOnce;
return SECSuccess;
}
static PRStatus SSL_BypassRegisterShutdown(void)
{
SECStatus rv = NSS_RegisterShutdown(SSL_BypassShutdown, NULL);
PORT_Assert(SECSuccess == rv);
return SECSuccess == rv ? PR_SUCCESS : PR_FAILURE;
}
#endif
static PRStatus SSL_BypassSetup(void)
{
#ifdef NO_PKCS11_BYPASS
/* Guarantee binary compatibility */
return PR_SUCCESS;
#else
return PR_CallOnce(&setupBypassOnce, &SSL_BypassRegisterShutdown);
#endif
}
/* Implements the semantics for SSL_OptionSet(SSL_ENABLE_TLS, on) described in
* ssl.h in the section "SSL version range setting API".
*/
static void
ssl_EnableTLS(SSLVersionRange *vrange, PRBool on)
{
if (SSL3_ALL_VERSIONS_DISABLED(vrange)) {
if (on) {
vrange->min = SSL_LIBRARY_VERSION_TLS_1_0;
vrange->max = SSL_LIBRARY_VERSION_TLS_1_0;
} /* else don't change anything */
return;
}
if (on) {
/* Expand the range of enabled version to include TLS 1.0 */
vrange->min = PR_MIN(vrange->min, SSL_LIBRARY_VERSION_TLS_1_0);
vrange->max = PR_MAX(vrange->max, SSL_LIBRARY_VERSION_TLS_1_0);
} else {
/* Disable all TLS versions, leaving only SSL 3.0 if it was enabled */
if (vrange->min == SSL_LIBRARY_VERSION_3_0) {
vrange->max = SSL_LIBRARY_VERSION_3_0;
} else {
/* Only TLS was enabled, so now no versions are. */
vrange->min = SSL_LIBRARY_VERSION_NONE;
vrange->max = SSL_LIBRARY_VERSION_NONE;
}
}
}
/* Implements the semantics for SSL_OptionSet(SSL_ENABLE_SSL3, on) described in
* ssl.h in the section "SSL version range setting API".
*/
static void
ssl_EnableSSL3(SSLVersionRange *vrange, PRBool on)
{
if (SSL3_ALL_VERSIONS_DISABLED(vrange)) {
if (on) {
vrange->min = SSL_LIBRARY_VERSION_3_0;
vrange->max = SSL_LIBRARY_VERSION_3_0;
} /* else don't change anything */
return;
}
if (on) {
/* Expand the range of enabled versions to include SSL 3.0. We know
* SSL 3.0 or some version of TLS is already enabled at this point, so
* we don't need to change vrange->max.
*/
vrange->min = SSL_LIBRARY_VERSION_3_0;
} else {
/* Disable SSL 3.0, leaving TLS unaffected. */
if (vrange->max > SSL_LIBRARY_VERSION_3_0) {
vrange->min = PR_MAX(vrange->min, SSL_LIBRARY_VERSION_TLS_1_0);
} else {
/* Only SSL 3.0 was enabled, so now no versions are. */
vrange->min = SSL_LIBRARY_VERSION_NONE;
vrange->max = SSL_LIBRARY_VERSION_NONE;
}
}
}
SECStatus
SSL_OptionSet(PRFileDesc *fd, PRInt32 which, PRBool on)
{
sslSocket *ss = ssl_FindSocket(fd);
SECStatus rv = SECSuccess;
PRBool holdingLocks;
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in Enable", SSL_GETPID(), fd));
return SECFailure;
}
holdingLocks = (!ss->opt.noLocks);
ssl_Get1stHandshakeLock(ss);
ssl_GetSSL3HandshakeLock(ss);
switch (which) {
case SSL_SOCKS:
ss->opt.useSocks = PR_FALSE;
rv = PrepareSocket(ss);
if (on) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
break;
case SSL_SECURITY:
ss->opt.useSecurity = on;
rv = PrepareSocket(ss);
break;
case SSL_REQUEST_CERTIFICATE:
ss->opt.requestCertificate = on;
break;
case SSL_REQUIRE_CERTIFICATE:
ss->opt.requireCertificate = on;
break;
case SSL_HANDSHAKE_AS_CLIENT:
if ( ss->opt.handshakeAsServer && on ) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
break;
}
ss->opt.handshakeAsClient = on;
break;
case SSL_HANDSHAKE_AS_SERVER:
if ( ss->opt.handshakeAsClient && on ) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
break;
}
ss->opt.handshakeAsServer = on;
break;
case SSL_ENABLE_TLS:
if (IS_DTLS(ss)) {
if (on) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure; /* not allowed */
}
break;
}
ssl_EnableTLS(&ss->vrange, on);
ss->preferredCipher = NULL;
if (ss->cipherSpecs) {
PORT_Free(ss->cipherSpecs);
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0;
}
break;
case SSL_ENABLE_SSL3:
if (IS_DTLS(ss)) {
if (on) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure; /* not allowed */
}
break;
}
ssl_EnableSSL3(&ss->vrange, on);
ss->preferredCipher = NULL;
if (ss->cipherSpecs) {
PORT_Free(ss->cipherSpecs);
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0;
}
break;
case SSL_ENABLE_SSL2:
if (IS_DTLS(ss)) {
if (on) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure; /* not allowed */
}
break;
}
ss->opt.enableSSL2 = on;
if (on) {
ss->opt.v2CompatibleHello = on;
}
ss->preferredCipher = NULL;
if (ss->cipherSpecs) {
PORT_Free(ss->cipherSpecs);
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0;
}
break;
case SSL_NO_CACHE:
ss->opt.noCache = on;
break;
case SSL_ENABLE_FDX:
if (on && ss->opt.noLocks) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
ss->opt.fdx = on;
break;
case SSL_V2_COMPATIBLE_HELLO:
if (IS_DTLS(ss)) {
if (on) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure; /* not allowed */
}
break;
}
ss->opt.v2CompatibleHello = on;
if (!on) {
ss->opt.enableSSL2 = on;
}
break;
case SSL_ROLLBACK_DETECTION:
ss->opt.detectRollBack = on;
break;
case SSL_NO_STEP_DOWN:
ss->opt.noStepDown = on;
if (on)
SSL_DisableExportCipherSuites(fd);
break;
case SSL_BYPASS_PKCS11:
if (ss->handshakeBegun) {
PORT_SetError(PR_INVALID_STATE_ERROR);
rv = SECFailure;
} else {
if (PR_FALSE != on) {
if (PR_SUCCESS == SSL_BypassSetup() ) {
#ifdef NO_PKCS11_BYPASS
ss->opt.bypassPKCS11 = PR_FALSE;
#else
ss->opt.bypassPKCS11 = on;
#endif
} else {
rv = SECFailure;
}
} else {
ss->opt.bypassPKCS11 = PR_FALSE;
}
}
break;
case SSL_NO_LOCKS:
if (on && ss->opt.fdx) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
if (on && ssl_force_locks)
on = PR_FALSE; /* silent override */
ss->opt.noLocks = on;
if (on) {
locksEverDisabled = PR_TRUE;
strcpy(lockStatus + LOCKSTATUS_OFFSET, "DISABLED.");
} else if (!holdingLocks) {
rv = ssl_MakeLocks(ss);
if (rv != SECSuccess) {
ss->opt.noLocks = PR_TRUE;
}
}
break;
case SSL_ENABLE_SESSION_TICKETS:
ss->opt.enableSessionTickets = on;
break;
case SSL_ENABLE_DEFLATE:
ss->opt.enableDeflate = on;
break;
case SSL_ENABLE_RENEGOTIATION:
ss->opt.enableRenegotiation = on;
break;
case SSL_REQUIRE_SAFE_NEGOTIATION:
ss->opt.requireSafeNegotiation = on;
break;
case SSL_ENABLE_FALSE_START:
ss->opt.enableFalseStart = on;
break;
case SSL_CBC_RANDOM_IV:
ss->opt.cbcRandomIV = on;
break;
case SSL_ENABLE_OCSP_STAPLING:
ss->opt.enableOCSPStapling = on;
break;
case SSL_ENABLE_NPN:
ss->opt.enableNPN = on;
break;
case SSL_ENABLE_ALPN:
ss->opt.enableALPN = on;
break;
case SSL_REUSE_SERVER_ECDHE_KEY:
ss->opt.reuseServerECDHEKey = on;
break;
case SSL_ENABLE_FALLBACK_SCSV:
ss->opt.enableFallbackSCSV = on;
break;
case SSL_ENABLE_SERVER_DHE:
ss->opt.enableServerDhe = on;
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
/* We can't use the macros for releasing the locks here,
* because ss->opt.noLocks might have changed just above.
* We must release these locks (monitors) here, if we aquired them above,
* regardless of the current value of ss->opt.noLocks.
*/
if (holdingLocks) {
PZ_ExitMonitor((ss)->ssl3HandshakeLock);
PZ_ExitMonitor((ss)->firstHandshakeLock);
}
return rv;
}
SECStatus
SSL_OptionGet(PRFileDesc *fd, PRInt32 which, PRBool *pOn)
{
sslSocket *ss = ssl_FindSocket(fd);
SECStatus rv = SECSuccess;
PRBool on = PR_FALSE;
if (!pOn) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in Enable", SSL_GETPID(), fd));
*pOn = PR_FALSE;
return SECFailure;
}
ssl_Get1stHandshakeLock(ss);
ssl_GetSSL3HandshakeLock(ss);
switch (which) {
case SSL_SOCKS: on = PR_FALSE; break;
case SSL_SECURITY: on = ss->opt.useSecurity; break;
case SSL_REQUEST_CERTIFICATE: on = ss->opt.requestCertificate; break;
case SSL_REQUIRE_CERTIFICATE: on = ss->opt.requireCertificate; break;
case SSL_HANDSHAKE_AS_CLIENT: on = ss->opt.handshakeAsClient; break;
case SSL_HANDSHAKE_AS_SERVER: on = ss->opt.handshakeAsServer; break;
case SSL_ENABLE_TLS:
on = ss->vrange.max >= SSL_LIBRARY_VERSION_TLS_1_0;
break;
case SSL_ENABLE_SSL3:
on = ss->vrange.min == SSL_LIBRARY_VERSION_3_0;
break;
case SSL_ENABLE_SSL2: on = ss->opt.enableSSL2; break;
case SSL_NO_CACHE: on = ss->opt.noCache; break;
case SSL_ENABLE_FDX: on = ss->opt.fdx; break;
case SSL_V2_COMPATIBLE_HELLO: on = ss->opt.v2CompatibleHello; break;
case SSL_ROLLBACK_DETECTION: on = ss->opt.detectRollBack; break;
case SSL_NO_STEP_DOWN: on = ss->opt.noStepDown; break;
case SSL_BYPASS_PKCS11: on = ss->opt.bypassPKCS11; break;
case SSL_NO_LOCKS: on = ss->opt.noLocks; break;
case SSL_ENABLE_SESSION_TICKETS:
on = ss->opt.enableSessionTickets;
break;
case SSL_ENABLE_DEFLATE: on = ss->opt.enableDeflate; break;
case SSL_ENABLE_RENEGOTIATION:
on = ss->opt.enableRenegotiation; break;
case SSL_REQUIRE_SAFE_NEGOTIATION:
on = ss->opt.requireSafeNegotiation; break;
case SSL_ENABLE_FALSE_START: on = ss->opt.enableFalseStart; break;
case SSL_CBC_RANDOM_IV: on = ss->opt.cbcRandomIV; break;
case SSL_ENABLE_OCSP_STAPLING: on = ss->opt.enableOCSPStapling; break;
case SSL_ENABLE_NPN: on = ss->opt.enableNPN; break;
case SSL_ENABLE_ALPN: on = ss->opt.enableALPN; break;
case SSL_REUSE_SERVER_ECDHE_KEY:
on = ss->opt.reuseServerECDHEKey; break;
case SSL_ENABLE_FALLBACK_SCSV: on = ss->opt.enableFallbackSCSV; break;
case SSL_ENABLE_SERVER_DHE: on = ss->opt.enableServerDhe; break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_Release1stHandshakeLock(ss);
*pOn = on;
return rv;
}
SECStatus
SSL_OptionGetDefault(PRInt32 which, PRBool *pOn)
{
SECStatus rv = SECSuccess;
PRBool on = PR_FALSE;
if (!pOn) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ssl_SetDefaultsFromEnvironment();
switch (which) {
case SSL_SOCKS: on = PR_FALSE; break;
case SSL_SECURITY: on = ssl_defaults.useSecurity; break;
case SSL_REQUEST_CERTIFICATE: on = ssl_defaults.requestCertificate; break;
case SSL_REQUIRE_CERTIFICATE: on = ssl_defaults.requireCertificate; break;
case SSL_HANDSHAKE_AS_CLIENT: on = ssl_defaults.handshakeAsClient; break;
case SSL_HANDSHAKE_AS_SERVER: on = ssl_defaults.handshakeAsServer; break;
case SSL_ENABLE_TLS:
on = versions_defaults_stream.max >= SSL_LIBRARY_VERSION_TLS_1_0;
break;
case SSL_ENABLE_SSL3:
on = versions_defaults_stream.min == SSL_LIBRARY_VERSION_3_0;
break;
case SSL_ENABLE_SSL2: on = ssl_defaults.enableSSL2; break;
case SSL_NO_CACHE: on = ssl_defaults.noCache; break;
case SSL_ENABLE_FDX: on = ssl_defaults.fdx; break;
case SSL_V2_COMPATIBLE_HELLO: on = ssl_defaults.v2CompatibleHello; break;
case SSL_ROLLBACK_DETECTION: on = ssl_defaults.detectRollBack; break;
case SSL_NO_STEP_DOWN: on = ssl_defaults.noStepDown; break;
case SSL_BYPASS_PKCS11: on = ssl_defaults.bypassPKCS11; break;
case SSL_NO_LOCKS: on = ssl_defaults.noLocks; break;
case SSL_ENABLE_SESSION_TICKETS:
on = ssl_defaults.enableSessionTickets;
break;
case SSL_ENABLE_DEFLATE: on = ssl_defaults.enableDeflate; break;
case SSL_ENABLE_RENEGOTIATION:
on = ssl_defaults.enableRenegotiation; break;
case SSL_REQUIRE_SAFE_NEGOTIATION:
on = ssl_defaults.requireSafeNegotiation;
break;
case SSL_ENABLE_FALSE_START: on = ssl_defaults.enableFalseStart; break;
case SSL_CBC_RANDOM_IV: on = ssl_defaults.cbcRandomIV; break;
case SSL_ENABLE_OCSP_STAPLING:
on = ssl_defaults.enableOCSPStapling;
break;
case SSL_ENABLE_NPN: on = ssl_defaults.enableNPN; break;
case SSL_ENABLE_ALPN: on = ssl_defaults.enableALPN; break;
case SSL_REUSE_SERVER_ECDHE_KEY:
on = ssl_defaults.reuseServerECDHEKey;
break;
case SSL_ENABLE_FALLBACK_SCSV:
on = ssl_defaults.enableFallbackSCSV;
break;
case SSL_ENABLE_SERVER_DHE:
on = ssl_defaults.enableServerDhe;
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
rv = SECFailure;
}
*pOn = on;
return rv;
}
/* XXX Use Global Lock to protect this stuff. */
SECStatus
SSL_EnableDefault(int which, PRBool on)
{
return SSL_OptionSetDefault(which, on);
}
SECStatus
SSL_OptionSetDefault(PRInt32 which, PRBool on)
{
SECStatus status = ssl_Init();
if (status != SECSuccess) {
return status;
}
ssl_SetDefaultsFromEnvironment();
switch (which) {
case SSL_SOCKS:
ssl_defaults.useSocks = PR_FALSE;
if (on) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
break;
case SSL_SECURITY:
ssl_defaults.useSecurity = on;
break;
case SSL_REQUEST_CERTIFICATE:
ssl_defaults.requestCertificate = on;
break;
case SSL_REQUIRE_CERTIFICATE:
ssl_defaults.requireCertificate = on;
break;
case SSL_HANDSHAKE_AS_CLIENT:
if ( ssl_defaults.handshakeAsServer && on ) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ssl_defaults.handshakeAsClient = on;
break;
case SSL_HANDSHAKE_AS_SERVER:
if ( ssl_defaults.handshakeAsClient && on ) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ssl_defaults.handshakeAsServer = on;
break;
case SSL_ENABLE_TLS:
ssl_EnableTLS(&versions_defaults_stream, on);
break;
case SSL_ENABLE_SSL3:
ssl_EnableSSL3(&versions_defaults_stream, on);
break;
case SSL_ENABLE_SSL2:
ssl_defaults.enableSSL2 = on;
if (on) {
ssl_defaults.v2CompatibleHello = on;
}
break;
case SSL_NO_CACHE:
ssl_defaults.noCache = on;
break;
case SSL_ENABLE_FDX:
if (on && ssl_defaults.noLocks) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ssl_defaults.fdx = on;
break;
case SSL_V2_COMPATIBLE_HELLO:
ssl_defaults.v2CompatibleHello = on;
if (!on) {
ssl_defaults.enableSSL2 = on;
}
break;
case SSL_ROLLBACK_DETECTION:
ssl_defaults.detectRollBack = on;
break;
case SSL_NO_STEP_DOWN:
ssl_defaults.noStepDown = on;
if (on)
SSL_DisableDefaultExportCipherSuites();
break;
case SSL_BYPASS_PKCS11:
if (PR_FALSE != on) {
if (PR_SUCCESS == SSL_BypassSetup()) {
#ifdef NO_PKCS11_BYPASS
ssl_defaults.bypassPKCS11 = PR_FALSE;
#else
ssl_defaults.bypassPKCS11 = on;
#endif
} else {
return SECFailure;
}
} else {
ssl_defaults.bypassPKCS11 = PR_FALSE;
}
break;
case SSL_NO_LOCKS:
if (on && ssl_defaults.fdx) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (on && ssl_force_locks)
on = PR_FALSE; /* silent override */
ssl_defaults.noLocks = on;
if (on) {
locksEverDisabled = PR_TRUE;
strcpy(lockStatus + LOCKSTATUS_OFFSET, "DISABLED.");
}
break;
case SSL_ENABLE_SESSION_TICKETS:
ssl_defaults.enableSessionTickets = on;
break;
case SSL_ENABLE_DEFLATE:
ssl_defaults.enableDeflate = on;
break;
case SSL_ENABLE_RENEGOTIATION:
ssl_defaults.enableRenegotiation = on;
break;
case SSL_REQUIRE_SAFE_NEGOTIATION:
ssl_defaults.requireSafeNegotiation = on;
break;
case SSL_ENABLE_FALSE_START:
ssl_defaults.enableFalseStart = on;
break;
case SSL_CBC_RANDOM_IV:
ssl_defaults.cbcRandomIV = on;
break;
case SSL_ENABLE_OCSP_STAPLING:
ssl_defaults.enableOCSPStapling = on;
break;
case SSL_ENABLE_NPN:
ssl_defaults.enableNPN = on;
break;
case SSL_ENABLE_ALPN:
ssl_defaults.enableALPN = on;
break;
case SSL_REUSE_SERVER_ECDHE_KEY:
ssl_defaults.reuseServerECDHEKey = on;
break;
case SSL_ENABLE_FALLBACK_SCSV:
ssl_defaults.enableFallbackSCSV = on;
break;
case SSL_ENABLE_SERVER_DHE:
ssl_defaults.enableServerDhe = on;
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
return SECSuccess;
}
/* function tells us if the cipher suite is one that we no longer support. */
static PRBool
ssl_IsRemovedCipherSuite(PRInt32 suite)
{
switch (suite) {
case SSL_FORTEZZA_DMS_WITH_NULL_SHA:
case SSL_FORTEZZA_DMS_WITH_FORTEZZA_CBC_SHA:
case SSL_FORTEZZA_DMS_WITH_RC4_128_SHA:
return PR_TRUE;
default:
return PR_FALSE;
}
}
/* Part of the public NSS API.
* Since this is a global (not per-socket) setting, we cannot use the
* HandshakeLock to protect this. Probably want a global lock.
*/
SECStatus
SSL_SetPolicy(long which, int policy)
{
if ((which & 0xfffe) == SSL_RSA_OLDFIPS_WITH_3DES_EDE_CBC_SHA) {
/* one of the two old FIPS ciphers */
if (which == SSL_RSA_OLDFIPS_WITH_3DES_EDE_CBC_SHA)
which = SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA;
else if (which == SSL_RSA_OLDFIPS_WITH_DES_CBC_SHA)
which = SSL_RSA_FIPS_WITH_DES_CBC_SHA;
}
if (ssl_IsRemovedCipherSuite(which))
return SECSuccess;
return SSL_CipherPolicySet(which, policy);
}
SECStatus
SSL_CipherPolicySet(PRInt32 which, PRInt32 policy)
{
SECStatus rv = ssl_Init();
if (rv != SECSuccess) {
return rv;
}
if (ssl_IsRemovedCipherSuite(which)) {
rv = SECSuccess;
} else if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_SetPolicy(which, policy);
} else {
rv = ssl3_SetPolicy((ssl3CipherSuite)which, policy);
}
return rv;
}
SECStatus
SSL_CipherPolicyGet(PRInt32 which, PRInt32 *oPolicy)
{
SECStatus rv;
if (!oPolicy) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (ssl_IsRemovedCipherSuite(which)) {
*oPolicy = SSL_NOT_ALLOWED;
rv = SECSuccess;
} else if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_GetPolicy(which, oPolicy);
} else {
rv = ssl3_GetPolicy((ssl3CipherSuite)which, oPolicy);
}
return rv;
}
/* Part of the public NSS API.
* Since this is a global (not per-socket) setting, we cannot use the
* HandshakeLock to protect this. Probably want a global lock.
* These changes have no effect on any sslSockets already created.
*/
SECStatus
SSL_EnableCipher(long which, PRBool enabled)
{
if ((which & 0xfffe) == SSL_RSA_OLDFIPS_WITH_3DES_EDE_CBC_SHA) {
/* one of the two old FIPS ciphers */
if (which == SSL_RSA_OLDFIPS_WITH_3DES_EDE_CBC_SHA)
which = SSL_RSA_FIPS_WITH_3DES_EDE_CBC_SHA;
else if (which == SSL_RSA_OLDFIPS_WITH_DES_CBC_SHA)
which = SSL_RSA_FIPS_WITH_DES_CBC_SHA;
}
if (ssl_IsRemovedCipherSuite(which))
return SECSuccess;
return SSL_CipherPrefSetDefault(which, enabled);
}
SECStatus
SSL_CipherPrefSetDefault(PRInt32 which, PRBool enabled)
{
SECStatus rv = ssl_Init();
if (rv != SECSuccess) {
return rv;
}
if (ssl_IsRemovedCipherSuite(which))
return SECSuccess;
if (enabled && ssl_defaults.noStepDown && SSL_IsExportCipherSuite(which)) {
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
return SECFailure;
}
if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_CipherPrefSetDefault(which, enabled);
} else {
rv = ssl3_CipherPrefSetDefault((ssl3CipherSuite)which, enabled);
}
return rv;
}
SECStatus
SSL_CipherPrefGetDefault(PRInt32 which, PRBool *enabled)
{
SECStatus rv;
if (!enabled) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (ssl_IsRemovedCipherSuite(which)) {
*enabled = PR_FALSE;
rv = SECSuccess;
} else if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_CipherPrefGetDefault(which, enabled);
} else {
rv = ssl3_CipherPrefGetDefault((ssl3CipherSuite)which, enabled);
}
return rv;
}
SECStatus
SSL_CipherPrefSet(PRFileDesc *fd, PRInt32 which, PRBool enabled)
{
SECStatus rv;
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in CipherPrefSet", SSL_GETPID(), fd));
return SECFailure;
}
if (ssl_IsRemovedCipherSuite(which))
return SECSuccess;
if (enabled && ss->opt.noStepDown && SSL_IsExportCipherSuite(which)) {
PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
return SECFailure;
}
if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_CipherPrefSet(ss, which, enabled);
} else {
rv = ssl3_CipherPrefSet(ss, (ssl3CipherSuite)which, enabled);
}
return rv;
}
SECStatus
SSL_CipherPrefGet(PRFileDesc *fd, PRInt32 which, PRBool *enabled)
{
SECStatus rv;
sslSocket *ss = ssl_FindSocket(fd);
if (!enabled) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in CipherPrefGet", SSL_GETPID(), fd));
*enabled = PR_FALSE;
return SECFailure;
}
if (ssl_IsRemovedCipherSuite(which)) {
*enabled = PR_FALSE;
rv = SECSuccess;
} else if (SSL_IS_SSL2_CIPHER(which)) {
rv = ssl2_CipherPrefGet(ss, which, enabled);
} else {
rv = ssl3_CipherPrefGet(ss, (ssl3CipherSuite)which, enabled);
}
return rv;
}
SECStatus
NSS_SetDomesticPolicy(void)
{
SECStatus status = SECSuccess;
const PRUint16 *cipher;
for (cipher = SSL_ImplementedCiphers; *cipher != 0; ++cipher) {
status = SSL_SetPolicy(*cipher, SSL_ALLOWED);
if (status != SECSuccess)
break;
}
return status;
}
SECStatus
NSS_SetExportPolicy(void)
{
return NSS_SetDomesticPolicy();
}
SECStatus
NSS_SetFrancePolicy(void)
{
return NSS_SetDomesticPolicy();
}
SECStatus
SSL_DHEGroupPrefSet(PRFileDesc *fd,
SSLDHEGroupType *groups,
PRUint16 num_groups)
{
sslSocket *ss;
if ((num_groups && !groups) || (!num_groups && groups)) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_DHEGroupPrefSet", SSL_GETPID(), fd));
return SECFailure;
}
if (ss->ssl3.dheGroups) {
PORT_Free(ss->ssl3.dheGroups);
ss->ssl3.dheGroups = NULL;
ss->ssl3.numDHEGroups = 0;
}
if (groups) {
ss->ssl3.dheGroups = PORT_NewArray(SSLDHEGroupType, num_groups);
if (!ss->ssl3.dheGroups) {
PORT_SetError(SEC_ERROR_NO_MEMORY);
return SECFailure;
}
PORT_Memcpy(ss->ssl3.dheGroups, groups,
sizeof(SSLDHEGroupType) * num_groups);
}
return SECSuccess;
}
PRCallOnceType gWeakDHParamsRegisterOnce;
int gWeakDHParamsRegisterError;
PRCallOnceType gWeakDHParamsOnce;
int gWeakDHParamsError;
/* As our code allocates type PQGParams, we'll keep it around,
* even though we only make use of it's parameters through gWeakDHParam. */
static PQGParams *gWeakParamsPQG;
static ssl3DHParams *gWeakDHParams;
static PRStatus
ssl3_CreateWeakDHParams()
{
PQGVerify *vfy;
SECStatus rv, passed;
PORT_Assert(!gWeakDHParams && !gWeakParamsPQG);
rv = PK11_PQG_ParamGenV2(1024, 160, 64 /*maximum seed that will work*/,
&gWeakParamsPQG, &vfy);
if (rv != SECSuccess) {
gWeakDHParamsError = PORT_GetError();
return PR_FAILURE;
}
rv = PK11_PQG_VerifyParams(gWeakParamsPQG, vfy, &passed);
if (rv != SECSuccess || passed != SECSuccess) {
SSL_DBG(("%d: PK11_PQG_VerifyParams failed in ssl3_CreateWeakDHParams",
SSL_GETPID()));
gWeakDHParamsError = PORT_GetError();
return PR_FAILURE;
}
gWeakDHParams = PORT_ArenaNew(gWeakParamsPQG->arena, ssl3DHParams);
if (!gWeakDHParams) {
gWeakDHParamsError = PORT_GetError();
return PR_FAILURE;
}
gWeakDHParams->prime.data = gWeakParamsPQG->prime.data;
gWeakDHParams->prime.len = gWeakParamsPQG->prime.len;
gWeakDHParams->base.data = gWeakParamsPQG->base.data;
gWeakDHParams->base.len = gWeakParamsPQG->base.len;
PK11_PQG_DestroyVerify(vfy);
return PR_SUCCESS;
}
static SECStatus
ssl3_WeakDHParamsShutdown(void *appData, void *nssData)
{
if (gWeakParamsPQG) {
PK11_PQG_DestroyParams(gWeakParamsPQG);
gWeakParamsPQG = NULL;
gWeakDHParams = NULL;
}
return SECSuccess;
}
static PRStatus
ssl3_WeakDHParamsRegisterShutdown(void)
{
SECStatus rv;
rv = NSS_RegisterShutdown(ssl3_WeakDHParamsShutdown, NULL);
if (rv != SECSuccess) {
gWeakDHParamsRegisterError = PORT_GetError();
}
return (PRStatus)rv;
}
/* global init strategy inspired by ssl3_CreateECDHEphemeralKeys */
SECStatus
SSL_EnableWeakDHEPrimeGroup(PRFileDesc *fd, PRBool enabled)
{
sslSocket *ss;
PRStatus status;
if (enabled) {
status = PR_CallOnce(&gWeakDHParamsRegisterOnce,
ssl3_WeakDHParamsRegisterShutdown);
if (status != PR_SUCCESS) {
PORT_SetError(gWeakDHParamsRegisterError);
return SECFailure;
}
status = PR_CallOnce(&gWeakDHParamsOnce, ssl3_CreateWeakDHParams);
if (status != PR_SUCCESS) {
PORT_SetError(gWeakDHParamsError);
return SECFailure;
}
}
if (!fd)
return SECSuccess;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_DHEGroupPrefSet", SSL_GETPID(), fd));
return SECFailure;
}
ss->ssl3.dheWeakGroupEnabled = enabled;
return SECSuccess;
}
#include "dhe-param.c"
static const SSLDHEGroupType ssl_default_dhe_groups[] = {
ssl_ff_dhe_2048_group
};
/* Keep this array synchronized with the index definitions in SSLDHEGroupType */
static const ssl3DHParams *all_ssl3DHParams[] = {
NULL, /* ssl_dhe_group_none */
&ff_dhe_2048,
&ff_dhe_3072,
&ff_dhe_4096,
&ff_dhe_6144,
&ff_dhe_8192,
};
static SSLDHEGroupType
selectDHEGroup(sslSocket *ss, const SSLDHEGroupType *groups, PRUint16 num_groups)
{
if (!groups || !num_groups)
return ssl_dhe_group_none;
/* We don't have automatic group parameter selection yet
* (potentially) based on socket parameters, e.g. key sizes.
* For now, we return the first available group from the allowed list. */
return groups[0];
}
/* Ensure DH parameters have been selected */
SECStatus
ssl3_SelectDHParams(sslSocket *ss)
{
SSLDHEGroupType selectedGroup = ssl_dhe_group_none;
if (ss->ssl3.dheWeakGroupEnabled) {
ss->dheParams = gWeakDHParams;
} else {
if (ss->ssl3.dheGroups) {
selectedGroup = selectDHEGroup(ss, ss->ssl3.dheGroups,
ss->ssl3.numDHEGroups);
} else {
size_t number_of_default_groups = PR_ARRAY_SIZE(ssl_default_dhe_groups);
selectedGroup = selectDHEGroup(ss, ssl_default_dhe_groups,
number_of_default_groups);
}
if (selectedGroup == ssl_dhe_group_none ||
selectedGroup >= ssl_dhe_group_max) {
return SECFailure;
}
ss->dheParams = all_ssl3DHParams[selectedGroup];
}
return SECSuccess;
}
/* LOCKS ??? XXX */
static PRFileDesc *
ssl_ImportFD(PRFileDesc *model, PRFileDesc *fd, SSLProtocolVariant variant)
{
sslSocket * ns = NULL;
PRStatus rv;
PRNetAddr addr;
SECStatus status = ssl_Init();
if (status != SECSuccess) {
return NULL;
}
if (model == NULL) {
/* Just create a default socket if we're given NULL for the model */
ns = ssl_NewSocket((PRBool)(!ssl_defaults.noLocks), variant);
} else {
sslSocket * ss = ssl_FindSocket(model);
if (ss == NULL || ss->protocolVariant != variant) {
SSL_DBG(("%d: SSL[%d]: bad model socket in ssl_ImportFD",
SSL_GETPID(), model));
return NULL;
}
ns = ssl_DupSocket(ss);
}
if (ns == NULL)
return NULL;
rv = ssl_PushIOLayer(ns, fd, PR_TOP_IO_LAYER);
if (rv != PR_SUCCESS) {
ssl_FreeSocket(ns);
SET_ERROR_CODE
return NULL;
}
#if defined(DEBUG) || defined(FORCE_PR_ASSERT)
{
sslSocket * ss = ssl_FindSocket(fd);
PORT_Assert(ss == ns);
}
#endif
ns->TCPconnected = (PR_SUCCESS == ssl_DefGetpeername(ns, &addr));
return fd;
}
PRFileDesc *
SSL_ImportFD(PRFileDesc *model, PRFileDesc *fd)
{
return ssl_ImportFD(model, fd, ssl_variant_stream);
}
PRFileDesc *
DTLS_ImportFD(PRFileDesc *model, PRFileDesc *fd)
{
return ssl_ImportFD(model, fd, ssl_variant_datagram);
}
/* SSL_SetNextProtoCallback is used to select an application protocol
* for ALPN and NPN. For ALPN, this runs on the server; for NPN it
* runs on the client. */
/* Note: The ALPN version doesn't allow for the use of a default, setting a
* status of SSL_NEXT_PROTO_NO_OVERLAP is treated as a failure. */
SECStatus
SSL_SetNextProtoCallback(PRFileDesc *fd, SSLNextProtoCallback callback,
void *arg)
{
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetNextProtoCallback", SSL_GETPID(),
fd));
return SECFailure;
}
ssl_GetSSL3HandshakeLock(ss);
ss->nextProtoCallback = callback;
ss->nextProtoArg = arg;
ssl_ReleaseSSL3HandshakeLock(ss);
return SECSuccess;
}
/* ssl_NextProtoNegoCallback is set as an ALPN/NPN callback when
* SSL_SetNextProtoNego is used.
*/
static SECStatus
ssl_NextProtoNegoCallback(void *arg, PRFileDesc *fd,
const unsigned char *protos, unsigned int protos_len,
unsigned char *protoOut, unsigned int *protoOutLen,
unsigned int protoMaxLen)
{
unsigned int i, j;
const unsigned char *result;
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in ssl_NextProtoNegoCallback",
SSL_GETPID(), fd));
return SECFailure;
}
/* For each protocol in server preference, see if we support it. */
for (i = 0; i < protos_len; ) {
for (j = 0; j < ss->opt.nextProtoNego.len; ) {
if (protos[i] == ss->opt.nextProtoNego.data[j] &&
PORT_Memcmp(&protos[i+1], &ss->opt.nextProtoNego.data[j+1],
protos[i]) == 0) {
/* We found a match. */
ss->ssl3.nextProtoState = SSL_NEXT_PROTO_NEGOTIATED;
result = &protos[i];
goto found;
}
j += 1 + (unsigned int)ss->opt.nextProtoNego.data[j];
}
i += 1 + (unsigned int)protos[i];
}
/* The other side supports the extension, and either doesn't have any
* protocols configured, or none of its options match ours. In this case we
* request our favoured protocol. */
/* This will be treated as a failure for ALPN. */
ss->ssl3.nextProtoState = SSL_NEXT_PROTO_NO_OVERLAP;
result = ss->opt.nextProtoNego.data;
found:
if (protoMaxLen < result[0]) {
PORT_SetError(SEC_ERROR_OUTPUT_LEN);
return SECFailure;
}
memcpy(protoOut, result + 1, result[0]);
*protoOutLen = result[0];
return SECSuccess;
}
SECStatus
SSL_SetNextProtoNego(PRFileDesc *fd, const unsigned char *data,
unsigned int length)
{
sslSocket *ss;
SECStatus rv;
SECItem dataItem = { siBuffer, (unsigned char *) data, length };
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetNextProtoNego",
SSL_GETPID(), fd));
return SECFailure;
}
if (ssl3_ValidateNextProtoNego(data, length) != SECSuccess)
return SECFailure;
ssl_GetSSL3HandshakeLock(ss);
SECITEM_FreeItem(&ss->opt.nextProtoNego, PR_FALSE);
rv = SECITEM_CopyItem(NULL, &ss->opt.nextProtoNego, &dataItem);
ssl_ReleaseSSL3HandshakeLock(ss);
if (rv != SECSuccess)
return rv;
return SSL_SetNextProtoCallback(fd, ssl_NextProtoNegoCallback, NULL);
}
SECStatus
SSL_GetNextProto(PRFileDesc *fd, SSLNextProtoState *state, unsigned char *buf,
unsigned int *bufLen, unsigned int bufLenMax)
{
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_GetNextProto", SSL_GETPID(),
fd));
return SECFailure;
}
if (!state || !buf || !bufLen) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
*state = ss->ssl3.nextProtoState;
if (ss->ssl3.nextProtoState != SSL_NEXT_PROTO_NO_SUPPORT &&
ss->ssl3.nextProto.data) {
if (ss->ssl3.nextProto.len > bufLenMax) {
PORT_SetError(SEC_ERROR_OUTPUT_LEN);
return SECFailure;
}
PORT_Memcpy(buf, ss->ssl3.nextProto.data, ss->ssl3.nextProto.len);
*bufLen = ss->ssl3.nextProto.len;
} else {
*bufLen = 0;
}
return SECSuccess;
}
SECStatus SSL_SetSRTPCiphers(PRFileDesc *fd,
const PRUint16 *ciphers,
unsigned int numCiphers)
{
sslSocket *ss;
unsigned int i;
ss = ssl_FindSocket(fd);
if (!ss || !IS_DTLS(ss)) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetSRTPCiphers",
SSL_GETPID(), fd));
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (numCiphers > MAX_DTLS_SRTP_CIPHER_SUITES) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ss->ssl3.dtlsSRTPCipherCount = 0;
for (i = 0; i < numCiphers; i++) {
const PRUint16 *srtpCipher = srtpCiphers;
while (*srtpCipher) {
if (ciphers[i] == *srtpCipher)
break;
srtpCipher++;
}
if (*srtpCipher) {
ss->ssl3.dtlsSRTPCiphers[ss->ssl3.dtlsSRTPCipherCount++] =
ciphers[i];
} else {
SSL_DBG(("%d: SSL[%d]: invalid or unimplemented SRTP cipher "
"suite specified: 0x%04hx", SSL_GETPID(), fd,
ciphers[i]));
}
}
if (ss->ssl3.dtlsSRTPCipherCount == 0) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
return SECSuccess;
}
SECStatus
SSL_GetSRTPCipher(PRFileDesc *fd, PRUint16 *cipher)
{
sslSocket * ss;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_GetSRTPCipher",
SSL_GETPID(), fd));
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (!ss->ssl3.dtlsSRTPCipherSuite) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
*cipher = ss->ssl3.dtlsSRTPCipherSuite;
return SECSuccess;
}
PRFileDesc *
SSL_ReconfigFD(PRFileDesc *model, PRFileDesc *fd)
{
sslSocket * sm = NULL, *ss = NULL;
int i;
sslServerCerts * mc = NULL;
sslServerCerts * sc = NULL;
if (model == NULL) {
PR_SetError(SEC_ERROR_INVALID_ARGS, 0);
return NULL;
}
sm = ssl_FindSocket(model);
if (sm == NULL) {
SSL_DBG(("%d: SSL[%d]: bad model socket in ssl_ReconfigFD",
SSL_GETPID(), model));
return NULL;
}
ss = ssl_FindSocket(fd);
PORT_Assert(ss);
if (ss == NULL) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return NULL;
}
ss->opt = sm->opt;
ss->vrange = sm->vrange;
PORT_Memcpy(ss->cipherSuites, sm->cipherSuites, sizeof sm->cipherSuites);
PORT_Memcpy(ss->ssl3.dtlsSRTPCiphers, sm->ssl3.dtlsSRTPCiphers,
sizeof(PRUint16) * sm->ssl3.dtlsSRTPCipherCount);
ss->ssl3.dtlsSRTPCipherCount = sm->ssl3.dtlsSRTPCipherCount;
if (!ss->opt.useSecurity) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return NULL;
}
/* This int should be SSLKEAType, but CC on Irix complains,
* during the for loop.
*/
for (i=kt_null; i < kt_kea_size; i++) {
mc = &(sm->serverCerts[i]);
sc = &(ss->serverCerts[i]);
if (mc->serverCert && mc->serverCertChain) {
if (sc->serverCert) {
CERT_DestroyCertificate(sc->serverCert);
}
sc->serverCert = CERT_DupCertificate(mc->serverCert);
if (sc->serverCertChain) {
CERT_DestroyCertificateList(sc->serverCertChain);
}
sc->serverCertChain = CERT_DupCertList(mc->serverCertChain);
if (!sc->serverCertChain)
goto loser;
if (sm->certStatusArray[i]) {
if (ss->certStatusArray[i]) {
SECITEM_FreeArray(ss->certStatusArray[i], PR_TRUE);
ss->certStatusArray[i] = NULL;
}
ss->certStatusArray[i] = SECITEM_DupArray(NULL, sm->certStatusArray[i]);
if (!ss->certStatusArray[i])
goto loser;
}
}
if (mc->serverKeyPair) {
if (sc->serverKeyPair) {
ssl3_FreeKeyPair(sc->serverKeyPair);
}
sc->serverKeyPair = ssl3_GetKeyPairRef(mc->serverKeyPair);
sc->serverKeyBits = mc->serverKeyBits;
}
}
if (sm->stepDownKeyPair) {
if (ss->stepDownKeyPair) {
ssl3_FreeKeyPair(ss->stepDownKeyPair);
}
ss->stepDownKeyPair = ssl3_GetKeyPairRef(sm->stepDownKeyPair);
}
if (sm->ephemeralECDHKeyPair) {
if (ss->ephemeralECDHKeyPair) {
ssl3_FreeKeyPair(ss->ephemeralECDHKeyPair);
}
ss->ephemeralECDHKeyPair =
ssl3_GetKeyPairRef(sm->ephemeralECDHKeyPair);
}
/* copy trust anchor names */
if (sm->ssl3.ca_list) {
if (ss->ssl3.ca_list) {
CERT_FreeDistNames(ss->ssl3.ca_list);
}
ss->ssl3.ca_list = CERT_DupDistNames(sm->ssl3.ca_list);
if (!ss->ssl3.ca_list) {
goto loser;
}
}
if (sm->authCertificate)
ss->authCertificate = sm->authCertificate;
if (sm->authCertificateArg)
ss->authCertificateArg = sm->authCertificateArg;
if (sm->getClientAuthData)
ss->getClientAuthData = sm->getClientAuthData;
if (sm->getClientAuthDataArg)
ss->getClientAuthDataArg = sm->getClientAuthDataArg;
if (sm->sniSocketConfig)
ss->sniSocketConfig = sm->sniSocketConfig;
if (sm->sniSocketConfigArg)
ss->sniSocketConfigArg = sm->sniSocketConfigArg;
if (sm->handleBadCert)
ss->handleBadCert = sm->handleBadCert;
if (sm->badCertArg)
ss->badCertArg = sm->badCertArg;
if (sm->handshakeCallback)
ss->handshakeCallback = sm->handshakeCallback;
if (sm->handshakeCallbackData)
ss->handshakeCallbackData = sm->handshakeCallbackData;
if (sm->pkcs11PinArg)
ss->pkcs11PinArg = sm->pkcs11PinArg;
return fd;
loser:
return NULL;
}
PRBool
ssl3_VersionIsSupported(SSLProtocolVariant protocolVariant,
SSL3ProtocolVersion version)
{
switch (protocolVariant) {
case ssl_variant_stream:
return (version >= SSL_LIBRARY_VERSION_3_0 &&
version <= SSL_LIBRARY_VERSION_MAX_SUPPORTED);
case ssl_variant_datagram:
return (version >= SSL_LIBRARY_VERSION_TLS_1_1 &&
version <= SSL_LIBRARY_VERSION_MAX_SUPPORTED);
default:
/* Can't get here */
PORT_Assert(PR_FALSE);
return PR_FALSE;
}
}
/* Returns PR_TRUE if the given version range is valid and
** fully supported; otherwise, returns PR_FALSE.
*/
static PRBool
ssl3_VersionRangeIsValid(SSLProtocolVariant protocolVariant,
const SSLVersionRange *vrange)
{
return vrange &&
vrange->min <= vrange->max &&
ssl3_VersionIsSupported(protocolVariant, vrange->min) &&
ssl3_VersionIsSupported(protocolVariant, vrange->max);
}
SECStatus
SSL_VersionRangeGetSupported(SSLProtocolVariant protocolVariant,
SSLVersionRange *vrange)
{
if (!vrange) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
switch (protocolVariant) {
case ssl_variant_stream:
vrange->min = SSL_LIBRARY_VERSION_3_0;
vrange->max = SSL_LIBRARY_VERSION_MAX_SUPPORTED;
break;
case ssl_variant_datagram:
vrange->min = SSL_LIBRARY_VERSION_TLS_1_1;
vrange->max = SSL_LIBRARY_VERSION_MAX_SUPPORTED;
break;
default:
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
return SECSuccess;
}
SECStatus
SSL_VersionRangeGetDefault(SSLProtocolVariant protocolVariant,
SSLVersionRange *vrange)
{
if ((protocolVariant != ssl_variant_stream &&
protocolVariant != ssl_variant_datagram) || !vrange) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
*vrange = *VERSIONS_DEFAULTS(protocolVariant);
return SECSuccess;
}
SECStatus
SSL_VersionRangeSetDefault(SSLProtocolVariant protocolVariant,
const SSLVersionRange *vrange)
{
if (!ssl3_VersionRangeIsValid(protocolVariant, vrange)) {
PORT_SetError(SSL_ERROR_INVALID_VERSION_RANGE);
return SECFailure;
}
*VERSIONS_DEFAULTS(protocolVariant) = *vrange;
return SECSuccess;
}
SECStatus
SSL_VersionRangeGet(PRFileDesc *fd, SSLVersionRange *vrange)
{
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL3_VersionRangeGet",
SSL_GETPID(), fd));
return SECFailure;
}
if (!vrange) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ssl_Get1stHandshakeLock(ss);
ssl_GetSSL3HandshakeLock(ss);
*vrange = ss->vrange;
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_Release1stHandshakeLock(ss);
return SECSuccess;
}
SECStatus
SSL_VersionRangeSet(PRFileDesc *fd, const SSLVersionRange *vrange)
{
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL3_VersionRangeSet",
SSL_GETPID(), fd));
return SECFailure;
}
if (!ssl3_VersionRangeIsValid(ss->protocolVariant, vrange)) {
PORT_SetError(SSL_ERROR_INVALID_VERSION_RANGE);
return SECFailure;
}
ssl_Get1stHandshakeLock(ss);
ssl_GetSSL3HandshakeLock(ss);
ss->vrange = *vrange;
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_Release1stHandshakeLock(ss);
return SECSuccess;
}
const SECItemArray *
SSL_PeerStapledOCSPResponses(PRFileDesc *fd)
{
sslSocket *ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_PeerStapledOCSPResponses",
SSL_GETPID(), fd));
return NULL;
}
if (!ss->sec.ci.sid) {
PORT_SetError(SEC_ERROR_NOT_INITIALIZED);
return NULL;
}
return &ss->sec.ci.sid->peerCertStatus;
}
/************************************************************************/
/* The following functions are the TOP LEVEL SSL functions.
** They all get called through the NSPRIOMethods table below.
*/
static PRFileDesc * PR_CALLBACK
ssl_Accept(PRFileDesc *fd, PRNetAddr *sockaddr, PRIntervalTime timeout)
{
sslSocket *ss;
sslSocket *ns = NULL;
PRFileDesc *newfd = NULL;
PRFileDesc *osfd;
PRStatus status;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in accept", SSL_GETPID(), fd));
return NULL;
}
/* IF this is a listen socket, there shouldn't be any I/O going on */
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
ssl_Get1stHandshakeLock(ss);
ssl_GetSSL3HandshakeLock(ss);
ss->cTimeout = timeout;
osfd = ss->fd->lower;
/* First accept connection */
newfd = osfd->methods->accept(osfd, sockaddr, timeout);
if (newfd == NULL) {
SSL_DBG(("%d: SSL[%d]: accept failed, errno=%d",
SSL_GETPID(), ss->fd, PORT_GetError()));
} else {
/* Create ssl module */
ns = ssl_DupSocket(ss);
}
ssl_ReleaseSSL3HandshakeLock(ss);
ssl_Release1stHandshakeLock(ss);
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss); /* ss isn't used below here. */
if (ns == NULL)
goto loser;
/* push ssl module onto the new socket */
status = ssl_PushIOLayer(ns, newfd, PR_TOP_IO_LAYER);
if (status != PR_SUCCESS)
goto loser;
/* Now start server connection handshake with client.
** Don't need locks here because nobody else has a reference to ns yet.
*/
if ( ns->opt.useSecurity ) {
if ( ns->opt.handshakeAsClient ) {
ns->handshake = ssl2_BeginClientHandshake;
ss->handshaking = sslHandshakingAsClient;
} else {
ns->handshake = ssl2_BeginServerHandshake;
ss->handshaking = sslHandshakingAsServer;
}
}
ns->TCPconnected = 1;
return newfd;
loser:
if (ns != NULL)
ssl_FreeSocket(ns);
if (newfd != NULL)
PR_Close(newfd);
return NULL;
}
static PRStatus PR_CALLBACK
ssl_Connect(PRFileDesc *fd, const PRNetAddr *sockaddr, PRIntervalTime timeout)
{
sslSocket *ss;
PRStatus rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in connect", SSL_GETPID(), fd));
return PR_FAILURE;
}
/* IF this is a listen socket, there shouldn't be any I/O going on */
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
ss->cTimeout = timeout;
rv = (PRStatus)(*ss->ops->connect)(ss, sockaddr);
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss);
return rv;
}
static PRStatus PR_CALLBACK
ssl_Bind(PRFileDesc *fd, const PRNetAddr *addr)
{
sslSocket * ss = ssl_GetPrivate(fd);
PRStatus rv;
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in bind", SSL_GETPID(), fd));
return PR_FAILURE;
}
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
rv = (PRStatus)(*ss->ops->bind)(ss, addr);
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss);
return rv;
}
static PRStatus PR_CALLBACK
ssl_Listen(PRFileDesc *fd, PRIntn backlog)
{
sslSocket * ss = ssl_GetPrivate(fd);
PRStatus rv;
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in listen", SSL_GETPID(), fd));
return PR_FAILURE;
}
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
rv = (PRStatus)(*ss->ops->listen)(ss, backlog);
SSL_UNLOCK_WRITER(ss);
SSL_UNLOCK_READER(ss);
return rv;
}
static PRStatus PR_CALLBACK
ssl_Shutdown(PRFileDesc *fd, PRIntn how)
{
sslSocket * ss = ssl_GetPrivate(fd);
PRStatus rv;
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in shutdown", SSL_GETPID(), fd));
return PR_FAILURE;
}
if (how == PR_SHUTDOWN_RCV || how == PR_SHUTDOWN_BOTH) {
SSL_LOCK_READER(ss);
}
if (how == PR_SHUTDOWN_SEND || how == PR_SHUTDOWN_BOTH) {
SSL_LOCK_WRITER(ss);
}
rv = (PRStatus)(*ss->ops->shutdown)(ss, how);
if (how == PR_SHUTDOWN_SEND || how == PR_SHUTDOWN_BOTH) {
SSL_UNLOCK_WRITER(ss);
}
if (how == PR_SHUTDOWN_RCV || how == PR_SHUTDOWN_BOTH) {
SSL_UNLOCK_READER(ss);
}
return rv;
}
static PRStatus PR_CALLBACK
ssl_Close(PRFileDesc *fd)
{
sslSocket *ss;
PRStatus rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in close", SSL_GETPID(), fd));
return PR_FAILURE;
}
/* There must not be any I/O going on */
SSL_LOCK_READER(ss);
SSL_LOCK_WRITER(ss);
/* By the time this function returns,
** ss is an invalid pointer, and the locks to which it points have
** been unlocked and freed. So, this is the ONE PLACE in all of SSL
** where the LOCK calls and the corresponding UNLOCK calls are not in
** the same function scope. The unlock calls are in ssl_FreeSocket().
*/
rv = (PRStatus)(*ss->ops->close)(ss);
return rv;
}
static int PR_CALLBACK
ssl_Recv(PRFileDesc *fd, void *buf, PRInt32 len, PRIntn flags,
PRIntervalTime timeout)
{
sslSocket *ss;
int rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in recv", SSL_GETPID(), fd));
return SECFailure;
}
SSL_LOCK_READER(ss);
ss->rTimeout = timeout;
if (!ss->opt.fdx)
ss->wTimeout = timeout;
rv = (*ss->ops->recv)(ss, (unsigned char*)buf, len, flags);
SSL_UNLOCK_READER(ss);
return rv;
}
static int PR_CALLBACK
ssl_Send(PRFileDesc *fd, const void *buf, PRInt32 len, PRIntn flags,
PRIntervalTime timeout)
{
sslSocket *ss;
int rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in send", SSL_GETPID(), fd));
return SECFailure;
}
SSL_LOCK_WRITER(ss);
ss->wTimeout = timeout;
if (!ss->opt.fdx)
ss->rTimeout = timeout;
rv = (*ss->ops->send)(ss, (const unsigned char*)buf, len, flags);
SSL_UNLOCK_WRITER(ss);
return rv;
}
static int PR_CALLBACK
ssl_Read(PRFileDesc *fd, void *buf, PRInt32 len)
{
sslSocket *ss;
int rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in read", SSL_GETPID(), fd));
return SECFailure;
}
SSL_LOCK_READER(ss);
ss->rTimeout = PR_INTERVAL_NO_TIMEOUT;
if (!ss->opt.fdx)
ss->wTimeout = PR_INTERVAL_NO_TIMEOUT;
rv = (*ss->ops->read)(ss, (unsigned char*)buf, len);
SSL_UNLOCK_READER(ss);
return rv;
}
static int PR_CALLBACK
ssl_Write(PRFileDesc *fd, const void *buf, PRInt32 len)
{
sslSocket *ss;
int rv;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in write", SSL_GETPID(), fd));
return SECFailure;
}
SSL_LOCK_WRITER(ss);
ss->wTimeout = PR_INTERVAL_NO_TIMEOUT;
if (!ss->opt.fdx)
ss->rTimeout = PR_INTERVAL_NO_TIMEOUT;
rv = (*ss->ops->write)(ss, (const unsigned char*)buf, len);
SSL_UNLOCK_WRITER(ss);
return rv;
}
static PRStatus PR_CALLBACK
ssl_GetPeerName(PRFileDesc *fd, PRNetAddr *addr)
{
sslSocket *ss;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in getpeername", SSL_GETPID(), fd));
return PR_FAILURE;
}
return (PRStatus)(*ss->ops->getpeername)(ss, addr);
}
/*
*/
SECStatus
ssl_GetPeerInfo(sslSocket *ss)
{
PRFileDesc * osfd;
int rv;
PRNetAddr sin;
osfd = ss->fd->lower;
PORT_Memset(&sin, 0, sizeof(sin));
rv = osfd->methods->getpeername(osfd, &sin);
if (rv < 0) {
return SECFailure;
}
ss->TCPconnected = 1;
if (sin.inet.family == PR_AF_INET) {
PR_ConvertIPv4AddrToIPv6(sin.inet.ip, &ss->sec.ci.peer);
ss->sec.ci.port = sin.inet.port;
} else if (sin.ipv6.family == PR_AF_INET6) {
ss->sec.ci.peer = sin.ipv6.ip;
ss->sec.ci.port = sin.ipv6.port;
} else {
PORT_SetError(PR_ADDRESS_NOT_SUPPORTED_ERROR);
return SECFailure;
}
return SECSuccess;
}
static PRStatus PR_CALLBACK
ssl_GetSockName(PRFileDesc *fd, PRNetAddr *name)
{
sslSocket *ss;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in getsockname", SSL_GETPID(), fd));
return PR_FAILURE;
}
return (PRStatus)(*ss->ops->getsockname)(ss, name);
}
SECStatus
SSL_SetStapledOCSPResponses(PRFileDesc *fd, const SECItemArray *responses,
SSLKEAType kea)
{
sslSocket *ss;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetStapledOCSPResponses",
SSL_GETPID(), fd));
return SECFailure;
}
if ( kea <= 0 || kea >= kt_kea_size) {
SSL_DBG(("%d: SSL[%d]: invalid key in SSL_SetStapledOCSPResponses",
SSL_GETPID(), fd));
return SECFailure;
}
if (ss->certStatusArray[kea]) {
SECITEM_FreeArray(ss->certStatusArray[kea], PR_TRUE);
ss->certStatusArray[kea] = NULL;
}
if (responses) {
ss->certStatusArray[kea] = SECITEM_DupArray(NULL, responses);
}
return (ss->certStatusArray[kea] || !responses) ? SECSuccess : SECFailure;
}
SECStatus
SSL_SetSockPeerID(PRFileDesc *fd, const char *peerID)
{
sslSocket *ss;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_SetSockPeerID",
SSL_GETPID(), fd));
return SECFailure;
}
if (ss->peerID) {
PORT_Free(ss->peerID);
ss->peerID = NULL;
}
if (peerID)
ss->peerID = PORT_Strdup(peerID);
return (ss->peerID || !peerID) ? SECSuccess : SECFailure;
}
#define PR_POLL_RW (PR_POLL_WRITE | PR_POLL_READ)
static PRInt16 PR_CALLBACK
ssl_Poll(PRFileDesc *fd, PRInt16 how_flags, PRInt16 *p_out_flags)
{
sslSocket *ss;
PRInt16 new_flags = how_flags; /* should select on these flags. */
PRNetAddr addr;
*p_out_flags = 0;
ss = ssl_GetPrivate(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_Poll",
SSL_GETPID(), fd));
return 0; /* don't poll on this socket */
}
if (ss->opt.useSecurity &&
ss->handshaking != sslHandshakingUndetermined &&
!ss->firstHsDone &&
(how_flags & PR_POLL_RW)) {
if (!ss->TCPconnected) {
ss->TCPconnected = (PR_SUCCESS == ssl_DefGetpeername(ss, &addr));
}
/* If it's not connected, then presumably the application is polling
** on read or write appropriately, so don't change it.
*/
if (ss->TCPconnected) {
if (!ss->handshakeBegun) {
/* If the handshake has not begun, poll on read or write
** based on the local application's role in the handshake,
** not based on what the application requested.
*/
new_flags &= ~PR_POLL_RW;
if (ss->handshaking == sslHandshakingAsClient) {
new_flags |= PR_POLL_WRITE;
} else { /* handshaking as server */
new_flags |= PR_POLL_READ;
}
} else
/* First handshake is in progress */
if (ss->lastWriteBlocked) {
if (new_flags & PR_POLL_READ) {
/* The caller is waiting for data to be received,
** but the initial handshake is blocked on write, or the
** client's first handshake record has not been written.
** The code should select on write, not read.
*/
new_flags ^= PR_POLL_READ; /* don't select on read. */
new_flags |= PR_POLL_WRITE; /* do select on write. */
}
} else if (new_flags & PR_POLL_WRITE) {
/* The caller is trying to write, but the handshake is
** blocked waiting for data to read, and the first
** handshake has been sent. So do NOT to poll on write
** unless we did false start.
*/
if (!(ss->version >= SSL_LIBRARY_VERSION_3_0 &&
ss->ssl3.hs.canFalseStart)) {
new_flags ^= PR_POLL_WRITE; /* don't select on write. */
}
new_flags |= PR_POLL_READ; /* do select on read. */
}
}
} else if ((new_flags & PR_POLL_READ) && (SSL_DataPending(fd) > 0)) {
*p_out_flags = PR_POLL_READ; /* it's ready already. */
return new_flags;
} else if ((ss->lastWriteBlocked) && (how_flags & PR_POLL_READ) &&
(ss->pendingBuf.len != 0)) { /* write data waiting to be sent */
new_flags |= PR_POLL_WRITE; /* also select on write. */
}
if (ss->version >= SSL_LIBRARY_VERSION_3_0 &&
ss->ssl3.hs.restartTarget != NULL) {
/* Read and write will block until the asynchronous callback completes
* (e.g. until SSL_AuthCertificateComplete is called), so don't tell
* the caller to poll the socket unless there is pending write data.
*/
if (ss->lastWriteBlocked && ss->pendingBuf.len != 0) {
/* Ignore any newly-received data on the socket, but do wait for
* the socket to become writable again. Here, it is OK for an error
* to be detected, because our logic for sending pending write data
* will allow us to report the error to the caller without the risk
* of the application spinning.
*/
new_flags &= (PR_POLL_WRITE | PR_POLL_EXCEPT);
} else {
/* Unfortunately, clearing new_flags will make it impossible for
* the application to detect errors that it would otherwise be
* able to detect with PR_POLL_EXCEPT, until the asynchronous
* callback completes. However, we must clear all the flags to
* prevent the application from spinning (alternating between
* calling PR_Poll that would return PR_POLL_EXCEPT, and send/recv
* which won't actually report the I/O error while we are waiting
* for the asynchronous callback to complete).
*/
new_flags = 0;
}
}
if (new_flags && (fd->lower->methods->poll != NULL)) {
PRInt16 lower_out_flags = 0;
PRInt16 lower_new_flags;
lower_new_flags = fd->lower->methods->poll(fd->lower, new_flags,
&lower_out_flags);
if ((lower_new_flags & lower_out_flags) && (how_flags != new_flags)) {
PRInt16 out_flags = lower_out_flags & ~PR_POLL_RW;
if (lower_out_flags & PR_POLL_READ)
out_flags |= PR_POLL_WRITE;
if (lower_out_flags & PR_POLL_WRITE)
out_flags |= PR_POLL_READ;
*p_out_flags = out_flags;
new_flags = how_flags;
} else {
*p_out_flags = lower_out_flags;
new_flags = lower_new_flags;
}
}
return new_flags;
}
static PRInt32 PR_CALLBACK
ssl_TransmitFile(PRFileDesc *sd, PRFileDesc *fd,
const void *headers, PRInt32 hlen,
PRTransmitFileFlags flags, PRIntervalTime timeout)
{
PRSendFileData sfd;
sfd.fd = fd;
sfd.file_offset = 0;
sfd.file_nbytes = 0;
sfd.header = headers;
sfd.hlen = hlen;
sfd.trailer = NULL;
sfd.tlen = 0;
return sd->methods->sendfile(sd, &sfd, flags, timeout);
}
PRBool
ssl_FdIsBlocking(PRFileDesc *fd)
{
PRSocketOptionData opt;
PRStatus status;
opt.option = PR_SockOpt_Nonblocking;
opt.value.non_blocking = PR_FALSE;
status = PR_GetSocketOption(fd, &opt);
if (status != PR_SUCCESS)
return PR_FALSE;
return (PRBool)!opt.value.non_blocking;
}
PRBool
ssl_SocketIsBlocking(sslSocket *ss)
{
return ssl_FdIsBlocking(ss->fd);
}
PRInt32 sslFirstBufSize = 8 * 1024;
PRInt32 sslCopyLimit = 1024;
static PRInt32 PR_CALLBACK
ssl_WriteV(PRFileDesc *fd, const PRIOVec *iov, PRInt32 vectors,
PRIntervalTime timeout)
{
PRInt32 i;
PRInt32 bufLen;
PRInt32 left;
PRInt32 rv;
PRInt32 sent = 0;
const PRInt32 first_len = sslFirstBufSize;
const PRInt32 limit = sslCopyLimit;
PRBool blocking;
PRIOVec myIov = { 0, 0 };
char buf[MAX_FRAGMENT_LENGTH];
if (vectors < 0) {
PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
return -1;
}
if (vectors > PR_MAX_IOVECTOR_SIZE) {
PORT_SetError(PR_BUFFER_OVERFLOW_ERROR);
return -1;
}
for (i = 0; i < vectors; i++) {
if (iov[i].iov_len < 0) {
PORT_SetError(PR_INVALID_ARGUMENT_ERROR);
return -1;
}
}
blocking = ssl_FdIsBlocking(fd);
#define K16 sizeof(buf)
#define KILL_VECTORS while (vectors && !iov->iov_len) { ++iov; --vectors; }
#define GET_VECTOR do { myIov = *iov++; --vectors; KILL_VECTORS } while (0)
#define HANDLE_ERR(rv, len) \
if (rv != len) { \
if (rv < 0) { \
if (!blocking \
&& (PR_GetError() == PR_WOULD_BLOCK_ERROR) \
&& (sent > 0)) { \
return sent; \
} else { \
return -1; \
} \
} \
/* Only a nonblocking socket can have partial sends */ \
PR_ASSERT(!blocking); \
return sent + rv; \
}
#define SEND(bfr, len) \
do { \
rv = ssl_Send(fd, bfr, len, 0, timeout); \
HANDLE_ERR(rv, len) \
sent += len; \
} while (0)
/* Make sure the first write is at least 8 KB, if possible. */
KILL_VECTORS
if (!vectors)
return ssl_Send(fd, 0, 0, 0, timeout);
GET_VECTOR;
if (!vectors) {
return ssl_Send(fd, myIov.iov_base, myIov.iov_len, 0, timeout);
}
if (myIov.iov_len < first_len) {
PORT_Memcpy(buf, myIov.iov_base, myIov.iov_len);
bufLen = myIov.iov_len;
left = first_len - bufLen;
while (vectors && left) {
int toCopy;
GET_VECTOR;
toCopy = PR_MIN(left, myIov.iov_len);
PORT_Memcpy(buf + bufLen, myIov.iov_base, toCopy);
bufLen += toCopy;
left -= toCopy;
myIov.iov_base += toCopy;
myIov.iov_len -= toCopy;
}
SEND( buf, bufLen );
}
while (vectors || myIov.iov_len) {
PRInt32 addLen;
if (!myIov.iov_len) {
GET_VECTOR;
}
while (myIov.iov_len >= K16) {
SEND(myIov.iov_base, K16);
myIov.iov_base += K16;
myIov.iov_len -= K16;
}
if (!myIov.iov_len)
continue;
if (!vectors || myIov.iov_len > limit) {
addLen = 0;
} else if ((addLen = iov->iov_len % K16) + myIov.iov_len <= limit) {
/* Addlen is already computed. */;
} else if (vectors > 1 &&
iov[1].iov_len % K16 + addLen + myIov.iov_len <= 2 * limit) {
addLen = limit - myIov.iov_len;
} else
addLen = 0;
if (!addLen) {
SEND( myIov.iov_base, myIov.iov_len );
myIov.iov_len = 0;
continue;
}
PORT_Memcpy(buf, myIov.iov_base, myIov.iov_len);
bufLen = myIov.iov_len;
do {
GET_VECTOR;
PORT_Memcpy(buf + bufLen, myIov.iov_base, addLen);
myIov.iov_base += addLen;
myIov.iov_len -= addLen;
bufLen += addLen;
left = PR_MIN( limit, K16 - bufLen);
if (!vectors /* no more left */
|| myIov.iov_len > 0 /* we didn't use that one all up */
|| bufLen >= K16 /* it's full. */
) {
addLen = 0;
} else if ((addLen = iov->iov_len % K16) <= left) {
/* Addlen is already computed. */;
} else if (vectors > 1 &&
iov[1].iov_len % K16 + addLen <= left + limit) {
addLen = left;
} else
addLen = 0;
} while (addLen);
SEND( buf, bufLen );
}
return sent;
}
/*
* These functions aren't implemented.
*/
static PRInt32 PR_CALLBACK
ssl_Available(PRFileDesc *fd)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return SECFailure;
}
static PRInt64 PR_CALLBACK
ssl_Available64(PRFileDesc *fd)
{
PRInt64 res;
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
LL_I2L(res, -1L);
return res;
}
static PRStatus PR_CALLBACK
ssl_FSync(PRFileDesc *fd)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
static PRInt32 PR_CALLBACK
ssl_Seek(PRFileDesc *fd, PRInt32 offset, PRSeekWhence how) {
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return SECFailure;
}
static PRInt64 PR_CALLBACK
ssl_Seek64(PRFileDesc *fd, PRInt64 offset, PRSeekWhence how) {
PRInt64 res;
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
LL_I2L(res, -1L);
return res;
}
static PRStatus PR_CALLBACK
ssl_FileInfo(PRFileDesc *fd, PRFileInfo *info)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
static PRStatus PR_CALLBACK
ssl_FileInfo64(PRFileDesc *fd, PRFileInfo64 *info)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
static PRInt32 PR_CALLBACK
ssl_RecvFrom(PRFileDesc *fd, void *buf, PRInt32 amount, PRIntn flags,
PRNetAddr *addr, PRIntervalTime timeout)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return SECFailure;
}
static PRInt32 PR_CALLBACK
ssl_SendTo(PRFileDesc *fd, const void *buf, PRInt32 amount, PRIntn flags,
const PRNetAddr *addr, PRIntervalTime timeout)
{
PORT_Assert(0);
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return SECFailure;
}
static const PRIOMethods ssl_methods = {
PR_DESC_LAYERED,
ssl_Close, /* close */
ssl_Read, /* read */
ssl_Write, /* write */
ssl_Available, /* available */
ssl_Available64, /* available64 */
ssl_FSync, /* fsync */
ssl_Seek, /* seek */
ssl_Seek64, /* seek64 */
ssl_FileInfo, /* fileInfo */
ssl_FileInfo64, /* fileInfo64 */
ssl_WriteV, /* writev */
ssl_Connect, /* connect */
ssl_Accept, /* accept */
ssl_Bind, /* bind */
ssl_Listen, /* listen */
ssl_Shutdown, /* shutdown */
ssl_Recv, /* recv */
ssl_Send, /* send */
ssl_RecvFrom, /* recvfrom */
ssl_SendTo, /* sendto */
ssl_Poll, /* poll */
PR_EmulateAcceptRead, /* acceptread */
ssl_TransmitFile, /* transmitfile */
ssl_GetSockName, /* getsockname */
ssl_GetPeerName, /* getpeername */
NULL, /* getsockopt OBSOLETE */
NULL, /* setsockopt OBSOLETE */
NULL, /* getsocketoption */
NULL, /* setsocketoption */
PR_EmulateSendFile, /* Send a (partial) file with header/trailer*/
NULL, /* reserved for future use */
NULL, /* reserved for future use */
NULL, /* reserved for future use */
NULL, /* reserved for future use */
NULL /* reserved for future use */
};
static PRIOMethods combined_methods;
static void
ssl_SetupIOMethods(void)
{
PRIOMethods *new_methods = &combined_methods;
const PRIOMethods *nspr_methods = PR_GetDefaultIOMethods();
const PRIOMethods *my_methods = &ssl_methods;
*new_methods = *nspr_methods;
new_methods->file_type = my_methods->file_type;
new_methods->close = my_methods->close;
new_methods->read = my_methods->read;
new_methods->write = my_methods->write;
new_methods->available = my_methods->available;
new_methods->available64 = my_methods->available64;
new_methods->fsync = my_methods->fsync;
new_methods->seek = my_methods->seek;
new_methods->seek64 = my_methods->seek64;
new_methods->fileInfo = my_methods->fileInfo;
new_methods->fileInfo64 = my_methods->fileInfo64;
new_methods->writev = my_methods->writev;
new_methods->connect = my_methods->connect;
new_methods->accept = my_methods->accept;
new_methods->bind = my_methods->bind;
new_methods->listen = my_methods->listen;
new_methods->shutdown = my_methods->shutdown;
new_methods->recv = my_methods->recv;
new_methods->send = my_methods->send;
new_methods->recvfrom = my_methods->recvfrom;
new_methods->sendto = my_methods->sendto;
new_methods->poll = my_methods->poll;
new_methods->acceptread = my_methods->acceptread;
new_methods->transmitfile = my_methods->transmitfile;
new_methods->getsockname = my_methods->getsockname;
new_methods->getpeername = my_methods->getpeername;
/* new_methods->getsocketoption = my_methods->getsocketoption; */
/* new_methods->setsocketoption = my_methods->setsocketoption; */
new_methods->sendfile = my_methods->sendfile;
}
static PRCallOnceType initIoLayerOnce;
static PRStatus
ssl_InitIOLayer(void)
{
ssl_layer_id = PR_GetUniqueIdentity("SSL");
ssl_SetupIOMethods();
ssl_inited = PR_TRUE;
return PR_SUCCESS;
}
static PRStatus
ssl_PushIOLayer(sslSocket *ns, PRFileDesc *stack, PRDescIdentity id)
{
PRFileDesc *layer = NULL;
PRStatus status;
if (!ssl_inited) {
status = PR_CallOnce(&initIoLayerOnce, &ssl_InitIOLayer);
if (status != PR_SUCCESS)
goto loser;
}
if (ns == NULL)
goto loser;
layer = PR_CreateIOLayerStub(ssl_layer_id, &combined_methods);
if (layer == NULL)
goto loser;
layer->secret = (PRFilePrivate *)ns;
/* Here, "stack" points to the PRFileDesc on the top of the stack.
** "layer" points to a new FD that is to be inserted into the stack.
** If layer is being pushed onto the top of the stack, then
** PR_PushIOLayer switches the contents of stack and layer, and then
** puts stack on top of layer, so that after it is done, the top of
** stack is the same "stack" as it was before, and layer is now the
** FD for the former top of stack.
** After this call, stack always points to the top PRFD on the stack.
** If this function fails, the contents of stack and layer are as
** they were before the call.
*/
status = PR_PushIOLayer(stack, id, layer);
if (status != PR_SUCCESS)
goto loser;
ns->fd = (id == PR_TOP_IO_LAYER) ? stack : layer;
return PR_SUCCESS;
loser:
if (layer) {
layer->dtor(layer); /* free layer */
}
return PR_FAILURE;
}
/* if this fails, caller must destroy socket. */
static SECStatus
ssl_MakeLocks(sslSocket *ss)
{
ss->firstHandshakeLock = PZ_NewMonitor(nssILockSSL);
if (!ss->firstHandshakeLock)
goto loser;
ss->ssl3HandshakeLock = PZ_NewMonitor(nssILockSSL);
if (!ss->ssl3HandshakeLock)
goto loser;
ss->specLock = NSSRWLock_New(SSL_LOCK_RANK_SPEC, NULL);
if (!ss->specLock)
goto loser;
ss->recvBufLock = PZ_NewMonitor(nssILockSSL);
if (!ss->recvBufLock)
goto loser;
ss->xmitBufLock = PZ_NewMonitor(nssILockSSL);
if (!ss->xmitBufLock)
goto loser;
ss->writerThread = NULL;
if (ssl_lock_readers) {
ss->recvLock = PZ_NewLock(nssILockSSL);
if (!ss->recvLock)
goto loser;
ss->sendLock = PZ_NewLock(nssILockSSL);
if (!ss->sendLock)
goto loser;
}
return SECSuccess;
loser:
ssl_DestroyLocks(ss);
return SECFailure;
}
#if defined(XP_UNIX) || defined(XP_WIN32) || defined(XP_BEOS)
#define NSS_HAVE_GETENV 1
#endif
#define LOWER(x) (x | 0x20) /* cheap ToLower function ignores LOCALE */
static void
ssl_SetDefaultsFromEnvironment(void)
{
#if defined( NSS_HAVE_GETENV )
static int firsttime = 1;
if (firsttime) {
char * ev;
firsttime = 0;
#ifdef DEBUG
ev = getenv("SSLDEBUGFILE");
if (ev && ev[0]) {
ssl_trace_iob = fopen(ev, "w");
}
if (!ssl_trace_iob) {
ssl_trace_iob = stderr;
}
#ifdef TRACE
ev = getenv("SSLTRACE");
if (ev && ev[0]) {
ssl_trace = atoi(ev);
SSL_TRACE(("SSL: tracing set to %d", ssl_trace));
}
#endif /* TRACE */
ev = getenv("SSLDEBUG");
if (ev && ev[0]) {
ssl_debug = atoi(ev);
SSL_TRACE(("SSL: debugging set to %d", ssl_debug));
}
#endif /* DEBUG */
ev = getenv("SSLKEYLOGFILE");
if (ev && ev[0]) {
ssl_keylog_iob = fopen(ev, "a");
if (!ssl_keylog_iob) {
SSL_TRACE(("SSL: failed to open key log file"));
} else {
if (ftell(ssl_keylog_iob) == 0) {
fputs("# SSL/TLS secrets log file, generated by NSS\n",
ssl_keylog_iob);
}
SSL_TRACE(("SSL: logging SSL/TLS secrets to %s", ev));
}
}
#ifndef NO_PKCS11_BYPASS
ev = getenv("SSLBYPASS");
if (ev && ev[0]) {
ssl_defaults.bypassPKCS11 = (ev[0] == '1');
SSL_TRACE(("SSL: bypass default set to %d", \
ssl_defaults.bypassPKCS11));
}
#endif /* NO_PKCS11_BYPASS */
ev = getenv("SSLFORCELOCKS");
if (ev && ev[0] == '1') {
ssl_force_locks = PR_TRUE;
ssl_defaults.noLocks = 0;
strcpy(lockStatus + LOCKSTATUS_OFFSET, "FORCED. ");
SSL_TRACE(("SSL: force_locks set to %d", ssl_force_locks));
}
ev = getenv("NSS_SSL_ENABLE_RENEGOTIATION");
if (ev) {
if (ev[0] == '1' || LOWER(ev[0]) == 'u')
ssl_defaults.enableRenegotiation = SSL_RENEGOTIATE_UNRESTRICTED;
else if (ev[0] == '0' || LOWER(ev[0]) == 'n')
ssl_defaults.enableRenegotiation = SSL_RENEGOTIATE_NEVER;
else if (ev[0] == '2' || LOWER(ev[0]) == 'r')
ssl_defaults.enableRenegotiation = SSL_RENEGOTIATE_REQUIRES_XTN;
else if (ev[0] == '3' || LOWER(ev[0]) == 't')
ssl_defaults.enableRenegotiation = SSL_RENEGOTIATE_TRANSITIONAL;
SSL_TRACE(("SSL: enableRenegotiation set to %d",
ssl_defaults.enableRenegotiation));
}
ev = getenv("NSS_SSL_REQUIRE_SAFE_NEGOTIATION");
if (ev && ev[0] == '1') {
ssl_defaults.requireSafeNegotiation = PR_TRUE;
SSL_TRACE(("SSL: requireSafeNegotiation set to %d",
PR_TRUE));
}
ev = getenv("NSS_SSL_CBC_RANDOM_IV");
if (ev && ev[0] == '0') {
ssl_defaults.cbcRandomIV = PR_FALSE;
SSL_TRACE(("SSL: cbcRandomIV set to 0"));
}
}
#endif /* NSS_HAVE_GETENV */
}
/*
** Create a newsocket structure for a file descriptor.
*/
static sslSocket *
ssl_NewSocket(PRBool makeLocks, SSLProtocolVariant protocolVariant)
{
sslSocket *ss;
ssl_SetDefaultsFromEnvironment();
if (ssl_force_locks)
makeLocks = PR_TRUE;
/* Make a new socket and get it ready */
ss = (sslSocket*) PORT_ZAlloc(sizeof(sslSocket));
if (ss) {
/* This should be of type SSLKEAType, but CC on IRIX
* complains during the for loop.
*/
int i;
SECStatus status;
ss->opt = ssl_defaults;
ss->opt.useSocks = PR_FALSE;
ss->opt.noLocks = !makeLocks;
ss->vrange = *VERSIONS_DEFAULTS(protocolVariant);
ss->protocolVariant = protocolVariant;
ss->peerID = NULL;
ss->rTimeout = PR_INTERVAL_NO_TIMEOUT;
ss->wTimeout = PR_INTERVAL_NO_TIMEOUT;
ss->cTimeout = PR_INTERVAL_NO_TIMEOUT;
ss->cipherSpecs = NULL;
ss->sizeCipherSpecs = 0; /* produced lazily */
ss->preferredCipher = NULL;
ss->url = NULL;
for (i=kt_null; i < kt_kea_size; i++) {
sslServerCerts * sc = ss->serverCerts + i;
sc->serverCert = NULL;
sc->serverCertChain = NULL;
sc->serverKeyPair = NULL;
sc->serverKeyBits = 0;
ss->certStatusArray[i] = NULL;
}
ss->stepDownKeyPair = NULL;
ss->dheParams = NULL;
ss->dheKeyPair = NULL;
ss->dbHandle = CERT_GetDefaultCertDB();
/* Provide default implementation of hooks */
ss->authCertificate = SSL_AuthCertificate;
ss->authCertificateArg = (void *)ss->dbHandle;
ss->sniSocketConfig = NULL;
ss->sniSocketConfigArg = NULL;
ss->getClientAuthData = NULL;
ss->handleBadCert = NULL;
ss->badCertArg = NULL;
ss->pkcs11PinArg = NULL;
ss->ephemeralECDHKeyPair = NULL;
ssl_ChooseOps(ss);
ssl2_InitSocketPolicy(ss);
ssl3_InitSocketPolicy(ss);
PR_INIT_CLIST(&ss->ssl3.hs.lastMessageFlight);
if (makeLocks) {
status = ssl_MakeLocks(ss);
if (status != SECSuccess)
goto loser;
}
status = ssl_CreateSecurityInfo(ss);
if (status != SECSuccess)
goto loser;
status = ssl_InitGather(&ss->gs);
if (status != SECSuccess) {
loser:
ssl_DestroySocketContents(ss);
ssl_DestroyLocks(ss);
PORT_Free(ss);
ss = NULL;
}
}
return ss;
}
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