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gecko-dev/security/nss/lib/ssl/sslinfo.c

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C
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "ssl.h"
#include "sslimpl.h"
#include "sslproto.h"
#include "tls13hkdf.h"
static const char *
ssl_GetCompressionMethodName(SSLCompressionMethod compression)
{
switch (compression) {
case ssl_compression_null:
return "NULL";
#ifdef NSS_ENABLE_ZLIB
case ssl_compression_deflate:
return "DEFLATE";
#endif
default:
return "???";
}
}
SECStatus
SSL_GetChannelInfo(PRFileDesc *fd, SSLChannelInfo *info, PRUintn len)
{
sslSocket *ss;
SSLChannelInfo inf;
sslSessionID *sid;
/* Check if we can properly return the length of data written and that
* we're not asked to return more information than we know how to provide.
*/
if (!info || len < sizeof inf.length || len > sizeof inf) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_GetChannelInfo",
SSL_GETPID(), fd));
return SECFailure;
}
memset(&inf, 0, sizeof inf);
inf.length = PR_MIN(sizeof inf, len);
if (ss->opt.useSecurity && ss->enoughFirstHsDone) {
sid = ss->sec.ci.sid;
inf.protocolVersion = ss->version;
inf.authKeyBits = ss->sec.authKeyBits;
inf.keaKeyBits = ss->sec.keaKeyBits;
if (ss->ssl3.initialized) {
SSLCipherSuiteInfo cinfo;
SECStatus rv;
ssl_GetSpecReadLock(ss);
/* XXX The cipher suite should be in the specs and this
* function should get it from cwSpec rather than from the "hs".
* See bug 275744 comment 69 and bug 766137.
*/
inf.cipherSuite = ss->ssl3.hs.cipher_suite;
inf.compressionMethod = ss->ssl3.cwSpec->compression_method;
ssl_ReleaseSpecReadLock(ss);
inf.compressionMethodName =
ssl_GetCompressionMethodName(inf.compressionMethod);
/* Fill in the cipher details from the cipher suite. */
rv = SSL_GetCipherSuiteInfo(inf.cipherSuite,
&cinfo, sizeof(cinfo));
if (rv != SECSuccess) {
return SECFailure; /* Error code already set. */
}
inf.symCipher = cinfo.symCipher;
inf.macAlgorithm = cinfo.macAlgorithm;
/* Get these fromm |ss->sec| because that is accurate
* even with TLS 1.3 disaggregated cipher suites. */
inf.keaType = ss->sec.keaType;
inf.keaGroup = ss->sec.keaGroup ? ss->sec.keaGroup->name : ssl_grp_none;
inf.keaKeyBits = ss->sec.keaKeyBits;
inf.authType = ss->sec.authType;
inf.authKeyBits = ss->sec.authKeyBits;
inf.signatureScheme = ss->sec.signatureScheme;
}
if (sid) {
unsigned int sidLen;
inf.creationTime = sid->creationTime;
inf.lastAccessTime = sid->lastAccessTime;
inf.expirationTime = sid->expirationTime;
inf.extendedMasterSecretUsed =
(ss->version >= SSL_LIBRARY_VERSION_TLS_1_3 ||
sid->u.ssl3.keys.extendedMasterSecretUsed)
? PR_TRUE
: PR_FALSE;
inf.earlyDataAccepted =
(ss->ssl3.hs.zeroRttState == ssl_0rtt_accepted ||
ss->ssl3.hs.zeroRttState == ssl_0rtt_done);
sidLen = sid->u.ssl3.sessionIDLength;
sidLen = PR_MIN(sidLen, sizeof inf.sessionID);
inf.sessionIDLength = sidLen;
memcpy(inf.sessionID, sid->u.ssl3.sessionID, sidLen);
}
}
memcpy(info, &inf, inf.length);
return SECSuccess;
}
SECStatus
SSL_GetPreliminaryChannelInfo(PRFileDesc *fd,
SSLPreliminaryChannelInfo *info,
PRUintn len)
{
sslSocket *ss;
SSLPreliminaryChannelInfo inf;
/* Check if we can properly return the length of data written and that
* we're not asked to return more information than we know how to provide.
*/
if (!info || len < sizeof inf.length || len > sizeof inf) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_GetPreliminaryChannelInfo",
SSL_GETPID(), fd));
return SECFailure;
}
memset(&inf, 0, sizeof(inf));
inf.length = PR_MIN(sizeof(inf), len);
inf.valuesSet = ss->ssl3.hs.preliminaryInfo;
inf.protocolVersion = ss->version;
inf.cipherSuite = ss->ssl3.hs.cipher_suite;
inf.canSendEarlyData = !ss->sec.isServer &&
(ss->ssl3.hs.zeroRttState == ssl_0rtt_sent) &&
!ss->firstHsDone;
memcpy(info, &inf, inf.length);
return SECSuccess;
}
/* name */
#define CS_(x) x, #x
#define CS(x) CS_(TLS_##x)
/* legacy values for authAlgorithm */
#define S_DSA "DSA", ssl_auth_dsa
/* S_RSA is incorrect for signature-based suites */
/* ECDH suites incorrectly report S_RSA or S_ECDSA */
#define S_RSA "RSA", ssl_auth_rsa_decrypt
#define S_ECDSA "ECDSA", ssl_auth_ecdsa
#define S_PSK "PSK", ssl_auth_psk
#define S_ANY "TLS 1.3", ssl_auth_tls13_any
/* real authentication algorithm */
#define A_DSA ssl_auth_dsa
#define A_RSAD ssl_auth_rsa_decrypt
#define A_RSAS ssl_auth_rsa_sign
#define A_ECDSA ssl_auth_ecdsa
#define A_ECDH_R ssl_auth_ecdh_rsa
#define A_ECDH_E ssl_auth_ecdh_ecdsa
#define A_PSK ssl_auth_psk
/* Report ssl_auth_null for export suites that can't decide between
* ssl_auth_rsa_sign and ssl_auth_rsa_decrypt. */
#define A_EXP ssl_auth_null
#define A_ANY ssl_auth_tls13_any
/* key exchange */
#define K_DHE "DHE", ssl_kea_dh
#define K_RSA "RSA", ssl_kea_rsa
#define K_KEA "KEA", ssl_kea_kea
#define K_ECDH "ECDH", ssl_kea_ecdh
#define K_ECDHE "ECDHE", ssl_kea_ecdh
#define K_ECDHE_PSK "ECDHE-PSK", ssl_kea_ecdh_psk
#define K_DHE_PSK "DHE-PSK", ssl_kea_dh_psk
#define K_ANY "TLS 1.3", ssl_kea_tls13_any
/* record protection cipher */
#define C_SEED "SEED", calg_seed
#define C_CAMELLIA "CAMELLIA", calg_camellia
#define C_AES "AES", calg_aes
#define C_RC4 "RC4", calg_rc4
#define C_RC2 "RC2", calg_rc2
#define C_DES "DES", calg_des
#define C_3DES "3DES", calg_3des
#define C_NULL "NULL", calg_null
#define C_SJ "SKIPJACK", calg_sj
#define C_AESGCM "AES-GCM", calg_aes_gcm
#define C_CHACHA20 "CHACHA20POLY1305", calg_chacha20
/* "block cipher" sizes */
#define B_256 256, 256, 256
#define B_128 128, 128, 128
#define B_3DES 192, 156, 112
#define B_SJ 96, 80, 80
#define B_DES 64, 56, 56
#define B_56 128, 56, 56
#define B_40 128, 40, 40
#define B_0 0, 0, 0
/* "mac algorithm" and size */
#define M_AEAD_128 "AEAD", ssl_mac_aead, 128
#define M_SHA384 "SHA384", ssl_hmac_sha384, 384
#define M_SHA256 "SHA256", ssl_hmac_sha256, 256
#define M_SHA "SHA1", ssl_mac_sha, 160
#define M_MD5 "MD5", ssl_mac_md5, 128
#define M_NULL "NULL", ssl_mac_null, 0
/* flags: FIPS, exportable, nonstandard, reserved */
#define F_FIPS_STD 1, 0, 0, 0
#define F_FIPS_NSTD 1, 0, 1, 0
#define F_NFIPS_STD 0, 0, 0, 0
#define F_NFIPS_NSTD 0, 0, 1, 0 /* i.e., trash */
#define F_EXPORT 0, 1, 0, 0 /* i.e., trash */
static const SSLCipherSuiteInfo suiteInfo[] = {
/* <------ Cipher suite --------------------> <auth> <KEA> <bulk cipher> <MAC> <FIPS> */
{ 0, CS_(TLS_AES_128_GCM_SHA256), S_ANY, K_ANY, C_AESGCM, B_128, M_AEAD_128, F_FIPS_STD, A_ANY },
{ 0, CS_(TLS_CHACHA20_POLY1305_SHA256), S_ANY, K_ANY, C_CHACHA20, B_256, M_AEAD_128, F_NFIPS_STD, A_ANY },
{ 0, CS_(TLS_AES_256_GCM_SHA384), S_ANY, K_ANY, C_AESGCM, B_256, M_AEAD_128, F_NFIPS_STD, A_ANY },
{ 0, CS(RSA_WITH_AES_128_GCM_SHA256), S_RSA, K_RSA, C_AESGCM, B_128, M_AEAD_128, F_FIPS_STD, A_RSAD },
{ 0, CS(DHE_RSA_WITH_CHACHA20_POLY1305_SHA256), S_RSA, K_DHE, C_CHACHA20, B_256, M_AEAD_128, F_NFIPS_STD, A_RSAS },
{ 0, CS(DHE_RSA_WITH_CAMELLIA_256_CBC_SHA), S_RSA, K_DHE, C_CAMELLIA, B_256, M_SHA, F_NFIPS_STD, A_RSAS },
{ 0, CS(DHE_DSS_WITH_CAMELLIA_256_CBC_SHA), S_DSA, K_DHE, C_CAMELLIA, B_256, M_SHA, F_NFIPS_STD, A_DSA },
{ 0, CS(DHE_RSA_WITH_AES_256_CBC_SHA256), S_RSA, K_DHE, C_AES, B_256, M_SHA256, F_FIPS_STD, A_RSAS },
{ 0, CS(DHE_RSA_WITH_AES_256_CBC_SHA), S_RSA, K_DHE, C_AES, B_256, M_SHA, F_FIPS_STD, A_RSAS },
{ 0, CS(DHE_DSS_WITH_AES_256_CBC_SHA), S_DSA, K_DHE, C_AES, B_256, M_SHA, F_FIPS_STD, A_DSA },
{ 0, CS(DHE_DSS_WITH_AES_256_CBC_SHA256), S_DSA, K_DHE, C_AES, B_256, M_SHA256, F_FIPS_STD, A_DSA },
{ 0, CS(RSA_WITH_CAMELLIA_256_CBC_SHA), S_RSA, K_RSA, C_CAMELLIA, B_256, M_SHA, F_NFIPS_STD, A_RSAD },
{ 0, CS(RSA_WITH_AES_256_CBC_SHA256), S_RSA, K_RSA, C_AES, B_256, M_SHA256, F_FIPS_STD, A_RSAD },
{ 0, CS(RSA_WITH_AES_256_CBC_SHA), S_RSA, K_RSA, C_AES, B_256, M_SHA, F_FIPS_STD, A_RSAD },
{ 0, CS(DHE_RSA_WITH_CAMELLIA_128_CBC_SHA), S_RSA, K_DHE, C_CAMELLIA, B_128, M_SHA, F_NFIPS_STD, A_RSAS },
{ 0, CS(DHE_DSS_WITH_CAMELLIA_128_CBC_SHA), S_DSA, K_DHE, C_CAMELLIA, B_128, M_SHA, F_NFIPS_STD, A_DSA },
{ 0, CS(DHE_DSS_WITH_RC4_128_SHA), S_DSA, K_DHE, C_RC4, B_128, M_SHA, F_NFIPS_STD, A_DSA },
{ 0, CS(DHE_RSA_WITH_AES_128_CBC_SHA256), S_RSA, K_DHE, C_AES, B_128, M_SHA256, F_FIPS_STD, A_RSAS },
{ 0, CS(DHE_RSA_WITH_AES_128_GCM_SHA256), S_RSA, K_DHE, C_AESGCM, B_128, M_AEAD_128, F_FIPS_STD, A_RSAS },
{ 0, CS(DHE_RSA_WITH_AES_128_CBC_SHA), S_RSA, K_DHE, C_AES, B_128, M_SHA, F_FIPS_STD, A_RSAS },
{ 0, CS(DHE_DSS_WITH_AES_128_GCM_SHA256), S_DSA, K_DHE, C_AESGCM, B_128, M_AEAD_128, F_FIPS_STD, A_DSA },
{ 0, CS(DHE_DSS_WITH_AES_128_CBC_SHA), S_DSA, K_DHE, C_AES, B_128, M_SHA, F_FIPS_STD, A_DSA },
{ 0, CS(DHE_DSS_WITH_AES_128_CBC_SHA256), S_DSA, K_DHE, C_AES, B_128, M_SHA256, F_FIPS_STD, A_DSA },
{ 0, CS(RSA_WITH_SEED_CBC_SHA), S_RSA, K_RSA, C_SEED, B_128, M_SHA, F_FIPS_STD, A_RSAD },
{ 0, CS(RSA_WITH_CAMELLIA_128_CBC_SHA), S_RSA, K_RSA, C_CAMELLIA, B_128, M_SHA, F_NFIPS_STD, A_RSAD },
{ 0, CS(RSA_WITH_RC4_128_SHA), S_RSA, K_RSA, C_RC4, B_128, M_SHA, F_NFIPS_STD, A_RSAD },
{ 0, CS(RSA_WITH_RC4_128_MD5), S_RSA, K_RSA, C_RC4, B_128, M_MD5, F_NFIPS_STD, A_RSAD },
{ 0, CS(RSA_WITH_AES_128_CBC_SHA256), S_RSA, K_RSA, C_AES, B_128, M_SHA256, F_FIPS_STD, A_RSAD },
{ 0, CS(RSA_WITH_AES_128_CBC_SHA), S_RSA, K_RSA, C_AES, B_128, M_SHA, F_FIPS_STD, A_RSAD },
{ 0, CS(DHE_RSA_WITH_3DES_EDE_CBC_SHA), S_RSA, K_DHE, C_3DES, B_3DES, M_SHA, F_FIPS_STD, A_RSAS },
{ 0, CS(DHE_DSS_WITH_3DES_EDE_CBC_SHA), S_DSA, K_DHE, C_3DES, B_3DES, M_SHA, F_FIPS_STD, A_DSA },
{ 0, CS(RSA_WITH_3DES_EDE_CBC_SHA), S_RSA, K_RSA, C_3DES, B_3DES, M_SHA, F_FIPS_STD, A_RSAD },
{ 0, CS(DHE_RSA_WITH_DES_CBC_SHA), S_RSA, K_DHE, C_DES, B_DES, M_SHA, F_NFIPS_STD, A_RSAS },
{ 0, CS(DHE_DSS_WITH_DES_CBC_SHA), S_DSA, K_DHE, C_DES, B_DES, M_SHA, F_NFIPS_STD, A_DSA },
{ 0, CS(RSA_WITH_DES_CBC_SHA), S_RSA, K_RSA, C_DES, B_DES, M_SHA, F_NFIPS_STD, A_RSAD },
{ 0, CS(RSA_WITH_NULL_SHA256), S_RSA, K_RSA, C_NULL, B_0, M_SHA256, F_EXPORT, A_RSAD },
{ 0, CS(RSA_WITH_NULL_SHA), S_RSA, K_RSA, C_NULL, B_0, M_SHA, F_EXPORT, A_RSAD },
{ 0, CS(RSA_WITH_NULL_MD5), S_RSA, K_RSA, C_NULL, B_0, M_MD5, F_EXPORT, A_RSAD },
/* ECC cipher suites */
{ 0, CS(ECDHE_RSA_WITH_AES_128_GCM_SHA256), S_RSA, K_ECDHE, C_AESGCM, B_128, M_AEAD_128, F_FIPS_STD, A_RSAS },
{ 0, CS(ECDHE_ECDSA_WITH_AES_128_GCM_SHA256), S_ECDSA, K_ECDHE, C_AESGCM, B_128, M_AEAD_128, F_FIPS_STD, A_ECDSA },
{ 0, CS(ECDH_ECDSA_WITH_NULL_SHA), S_ECDSA, K_ECDH, C_NULL, B_0, M_SHA, F_NFIPS_STD, A_ECDH_E },
{ 0, CS(ECDH_ECDSA_WITH_RC4_128_SHA), S_ECDSA, K_ECDH, C_RC4, B_128, M_SHA, F_NFIPS_STD, A_ECDH_E },
{ 0, CS(ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA), S_ECDSA, K_ECDH, C_3DES, B_3DES, M_SHA, F_FIPS_STD, A_ECDH_E },
{ 0, CS(ECDH_ECDSA_WITH_AES_128_CBC_SHA), S_ECDSA, K_ECDH, C_AES, B_128, M_SHA, F_FIPS_STD, A_ECDH_E },
{ 0, CS(ECDH_ECDSA_WITH_AES_256_CBC_SHA), S_ECDSA, K_ECDH, C_AES, B_256, M_SHA, F_FIPS_STD, A_ECDH_E },
{ 0, CS(ECDHE_ECDSA_WITH_NULL_SHA), S_ECDSA, K_ECDHE, C_NULL, B_0, M_SHA, F_NFIPS_STD, A_ECDSA },
{ 0, CS(ECDHE_ECDSA_WITH_RC4_128_SHA), S_ECDSA, K_ECDHE, C_RC4, B_128, M_SHA, F_NFIPS_STD, A_ECDSA },
{ 0, CS(ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA), S_ECDSA, K_ECDHE, C_3DES, B_3DES, M_SHA, F_FIPS_STD, A_ECDSA },
{ 0, CS(ECDHE_ECDSA_WITH_AES_128_CBC_SHA), S_ECDSA, K_ECDHE, C_AES, B_128, M_SHA, F_FIPS_STD, A_ECDSA },
{ 0, CS(ECDHE_ECDSA_WITH_AES_128_CBC_SHA256), S_ECDSA, K_ECDHE, C_AES, B_128, M_SHA256, F_FIPS_STD, A_ECDSA },
{ 0, CS(ECDHE_ECDSA_WITH_AES_256_CBC_SHA), S_ECDSA, K_ECDHE, C_AES, B_256, M_SHA, F_FIPS_STD, A_ECDSA },
{ 0, CS(ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256), S_ECDSA, K_ECDHE, C_CHACHA20, B_256, M_AEAD_128, F_NFIPS_STD, A_ECDSA },
{ 0, CS(ECDH_RSA_WITH_NULL_SHA), S_RSA, K_ECDH, C_NULL, B_0, M_SHA, F_NFIPS_STD, A_ECDH_R },
{ 0, CS(ECDH_RSA_WITH_RC4_128_SHA), S_RSA, K_ECDH, C_RC4, B_128, M_SHA, F_NFIPS_STD, A_ECDH_R },
{ 0, CS(ECDH_RSA_WITH_3DES_EDE_CBC_SHA), S_RSA, K_ECDH, C_3DES, B_3DES, M_SHA, F_FIPS_STD, A_ECDH_R },
{ 0, CS(ECDH_RSA_WITH_AES_128_CBC_SHA), S_RSA, K_ECDH, C_AES, B_128, M_SHA, F_FIPS_STD, A_ECDH_R },
{ 0, CS(ECDH_RSA_WITH_AES_256_CBC_SHA), S_RSA, K_ECDH, C_AES, B_256, M_SHA, F_FIPS_STD, A_ECDH_R },
{ 0, CS(ECDHE_RSA_WITH_NULL_SHA), S_RSA, K_ECDHE, C_NULL, B_0, M_SHA, F_NFIPS_STD, A_RSAS },
{ 0, CS(ECDHE_RSA_WITH_RC4_128_SHA), S_RSA, K_ECDHE, C_RC4, B_128, M_SHA, F_NFIPS_STD, A_RSAS },
{ 0, CS(ECDHE_RSA_WITH_3DES_EDE_CBC_SHA), S_RSA, K_ECDHE, C_3DES, B_3DES, M_SHA, F_FIPS_STD, A_RSAS },
{ 0, CS(ECDHE_RSA_WITH_AES_128_CBC_SHA), S_RSA, K_ECDHE, C_AES, B_128, M_SHA, F_FIPS_STD, A_RSAS },
{ 0, CS(ECDHE_RSA_WITH_AES_128_CBC_SHA256), S_RSA, K_ECDHE, C_AES, B_128, M_SHA256, F_FIPS_STD, A_RSAS },
{ 0, CS(ECDHE_RSA_WITH_AES_256_CBC_SHA), S_RSA, K_ECDHE, C_AES, B_256, M_SHA, F_FIPS_STD, A_RSAS },
{ 0, CS(ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256), S_RSA, K_ECDHE, C_CHACHA20, B_256, M_AEAD_128, F_NFIPS_STD, A_RSAS },
{ 0, CS(ECDHE_RSA_WITH_AES_256_CBC_SHA384), S_RSA, K_ECDHE, C_AES, B_256, M_SHA384, F_FIPS_STD, A_RSAS },
{ 0, CS(ECDHE_ECDSA_WITH_AES_256_CBC_SHA384), S_ECDSA, K_ECDHE, C_AES, B_256, M_SHA384, F_FIPS_STD, A_ECDSA },
{ 0, CS(ECDHE_ECDSA_WITH_AES_256_GCM_SHA384), S_ECDSA, K_ECDHE, C_AESGCM, B_256, M_AEAD_128, F_FIPS_STD, A_ECDSA },
{ 0, CS(ECDHE_RSA_WITH_AES_256_GCM_SHA384), S_RSA, K_ECDHE, C_AESGCM, B_256, M_AEAD_128, F_FIPS_STD, A_RSAS },
{ 0, CS(DHE_DSS_WITH_AES_256_GCM_SHA384), S_DSA, K_DHE, C_AESGCM, B_256, M_AEAD_128, F_FIPS_STD, A_DSA },
{ 0, CS(DHE_RSA_WITH_AES_256_GCM_SHA384), S_RSA, K_DHE, C_AESGCM, B_256, M_AEAD_128, F_FIPS_STD, A_RSAS },
{ 0, CS(RSA_WITH_AES_256_GCM_SHA384), S_RSA, K_RSA, C_AESGCM, B_256, M_AEAD_128, F_FIPS_STD, A_RSAD },
};
#define NUM_SUITEINFOS ((sizeof suiteInfo) / (sizeof suiteInfo[0]))
SECStatus
SSL_GetCipherSuiteInfo(PRUint16 cipherSuite,
SSLCipherSuiteInfo *info, PRUintn len)
{
unsigned int i;
/* Check if we can properly return the length of data written and that
* we're not asked to return more information than we know how to provide.
*/
if (!info || len < sizeof suiteInfo[0].length ||
len > sizeof suiteInfo[0]) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
len = PR_MIN(len, sizeof suiteInfo[0]);
for (i = 0; i < NUM_SUITEINFOS; i++) {
if (suiteInfo[i].cipherSuite == cipherSuite) {
memcpy(info, &suiteInfo[i], len);
info->length = len;
return SECSuccess;
}
}
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
SECItem *
SSL_GetNegotiatedHostInfo(PRFileDesc *fd)
{
SECItem *sniName = NULL;
sslSocket *ss;
char *name = NULL;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_GetNegotiatedHostInfo",
SSL_GETPID(), fd));
return NULL;
}
if (ss->sec.isServer) {
if (ss->version > SSL_LIBRARY_VERSION_3_0 &&
ss->ssl3.initialized) { /* TLS */
SECItem *crsName;
ssl_GetSpecReadLock(ss); /*********************************/
crsName = &ss->ssl3.hs.srvVirtName;
if (crsName->data) {
sniName = SECITEM_DupItem(crsName);
}
ssl_ReleaseSpecReadLock(ss); /*----------------------------*/
}
return sniName;
}
name = SSL_RevealURL(fd);
if (name) {
sniName = PORT_ZNew(SECItem);
if (!sniName) {
PORT_Free(name);
return NULL;
}
sniName->data = (void *)name;
sniName->len = PORT_Strlen(name);
}
return sniName;
}
static SECStatus
tls13_Exporter(sslSocket *ss, PK11SymKey *secret,
const char *label, unsigned int labelLen,
const unsigned char *context, unsigned int contextLen,
unsigned char *out, unsigned int outLen)
{
if (!secret) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
return tls13_HkdfExpandLabelRaw(secret,
tls13_GetHash(ss),
context, contextLen,
label, labelLen,
out, outLen);
}
SECStatus
SSL_ExportKeyingMaterial(PRFileDesc *fd,
const char *label, unsigned int labelLen,
PRBool hasContext,
const unsigned char *context, unsigned int contextLen,
unsigned char *out, unsigned int outLen)
{
sslSocket *ss;
unsigned char *val = NULL;
unsigned int valLen, i;
SECStatus rv = SECFailure;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in ExportKeyingMaterial",
SSL_GETPID(), fd));
return SECFailure;
}
if (!label || !labelLen || !out || !outLen ||
(hasContext && (!context || !contextLen))) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
if (ss->version >= SSL_LIBRARY_VERSION_TLS_1_3) {
return tls13_Exporter(ss, ss->ssl3.hs.exporterSecret,
label, labelLen,
context, hasContext ? contextLen : 0,
out, outLen);
}
/* construct PRF arguments */
valLen = SSL3_RANDOM_LENGTH * 2;
if (hasContext) {
valLen += 2 /* PRUint16 length */ + contextLen;
}
val = PORT_Alloc(valLen);
if (!val) {
return SECFailure;
}
i = 0;
PORT_Memcpy(val + i, &ss->ssl3.hs.client_random.rand, SSL3_RANDOM_LENGTH);
i += SSL3_RANDOM_LENGTH;
PORT_Memcpy(val + i, &ss->ssl3.hs.server_random.rand, SSL3_RANDOM_LENGTH);
i += SSL3_RANDOM_LENGTH;
if (hasContext) {
val[i++] = contextLen >> 8;
val[i++] = contextLen;
PORT_Memcpy(val + i, context, contextLen);
i += contextLen;
}
PORT_Assert(i == valLen);
/* Allow TLS keying material to be exported sooner, when the master
* secret is available and we have sent ChangeCipherSpec.
*/
ssl_GetSpecReadLock(ss);
if (!ss->ssl3.cwSpec->master_secret && !ss->ssl3.cwSpec->msItem.len) {
PORT_SetError(SSL_ERROR_HANDSHAKE_NOT_COMPLETED);
rv = SECFailure;
} else {
rv = ssl3_TLSPRFWithMasterSecret(ss, ss->ssl3.cwSpec, label, labelLen,
val, valLen, out, outLen);
}
ssl_ReleaseSpecReadLock(ss);
PORT_ZFree(val, valLen);
return rv;
}
SECStatus
SSL_ExportEarlyKeyingMaterial(PRFileDesc *fd,
const char *label, unsigned int labelLen,
const unsigned char *context,
unsigned int contextLen,
unsigned char *out, unsigned int outLen)
{
sslSocket *ss;
ss = ssl_FindSocket(fd);
if (!ss) {
SSL_DBG(("%d: SSL[%d]: bad socket in SSL_ExportEarlyKeyingMaterial",
SSL_GETPID(), fd));
return SECFailure;
}
if (!label || !labelLen || !out || !outLen ||
(!context && contextLen)) {
PORT_SetError(SEC_ERROR_INVALID_ARGS);
return SECFailure;
}
return tls13_Exporter(ss, ss->ssl3.hs.earlyExporterSecret,
label, labelLen, context, contextLen,
out, outLen);
}
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