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gecko-dev/security/nss/lib/ssl/sslimpl.h

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/*
* This file is PRIVATE to SSL and should be the first thing included by
* any SSL implementation file.
*
* 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/. */
#ifndef __sslimpl_h_
#define __sslimpl_h_
#ifdef DEBUG
#undef NDEBUG
#else
#undef NDEBUG
#define NDEBUG
#endif
#include "secport.h"
#include "secerr.h"
#include "sslerr.h"
#include "ssl3prot.h"
#include "hasht.h"
#include "nssilock.h"
#include "pkcs11t.h"
#if defined(XP_UNIX) || defined(XP_BEOS)
#include "unistd.h"
#endif
#include "nssrwlk.h"
#include "prthread.h"
#include "prclist.h"
#include "sslt.h" /* for some formerly private types, now public */
/* to make some of these old enums public without namespace pollution,
** it was necessary to prepend ssl_ to the names.
** These #defines preserve compatibility with the old code here in libssl.
*/
typedef SSLKEAType SSL3KEAType;
typedef SSLMACAlgorithm SSL3MACAlgorithm;
typedef SSLSignType SSL3SignType;
#define sign_null ssl_sign_null
#define sign_rsa ssl_sign_rsa
#define sign_dsa ssl_sign_dsa
#define sign_ecdsa ssl_sign_ecdsa
#define calg_null ssl_calg_null
#define calg_rc4 ssl_calg_rc4
#define calg_rc2 ssl_calg_rc2
#define calg_des ssl_calg_des
#define calg_3des ssl_calg_3des
#define calg_idea ssl_calg_idea
#define calg_fortezza ssl_calg_fortezza /* deprecated, must preserve */
#define calg_aes ssl_calg_aes
#define calg_camellia ssl_calg_camellia
#define calg_seed ssl_calg_seed
#define calg_aes_gcm ssl_calg_aes_gcm
#define mac_null ssl_mac_null
#define mac_md5 ssl_mac_md5
#define mac_sha ssl_mac_sha
#define hmac_md5 ssl_hmac_md5
#define hmac_sha ssl_hmac_sha
#define hmac_sha256 ssl_hmac_sha256
#define mac_aead ssl_mac_aead
#define SET_ERROR_CODE /* reminder */
#define SEND_ALERT /* reminder */
#define TEST_FOR_FAILURE /* reminder */
#define DEAL_WITH_FAILURE /* reminder */
#if defined(DEBUG) || defined(TRACE)
#ifdef __cplusplus
#define Debug 1
#else
extern int Debug;
#endif
#else
#undef Debug
#endif
#if defined(DEBUG) && !defined(TRACE) && !defined(NISCC_TEST)
#define TRACE
#endif
#ifdef TRACE
#define SSL_TRC(a,b) if (ssl_trace >= (a)) ssl_Trace b
#define PRINT_BUF(a,b) if (ssl_trace >= (a)) ssl_PrintBuf b
#define DUMP_MSG(a,b) if (ssl_trace >= (a)) ssl_DumpMsg b
#else
#define SSL_TRC(a,b)
#define PRINT_BUF(a,b)
#define DUMP_MSG(a,b)
#endif
#ifdef DEBUG
#define SSL_DBG(b) if (ssl_debug) ssl_Trace b
#else
#define SSL_DBG(b)
#endif
#include "private/pprthred.h" /* for PR_InMonitor() */
#define ssl_InMonitor(m) PZ_InMonitor(m)
#define LSB(x) ((unsigned char) ((x) & 0xff))
#define MSB(x) ((unsigned char) (((unsigned)(x)) >> 8))
/************************************************************************/
typedef enum { SSLAppOpRead = 0,
SSLAppOpWrite,
SSLAppOpRDWR,
SSLAppOpPost,
SSLAppOpHeader
} SSLAppOperation;
#define SSL_MIN_MASTER_KEY_BYTES 5
#define SSL_MAX_MASTER_KEY_BYTES 64
#define SSL2_SESSIONID_BYTES 16
#define SSL3_SESSIONID_BYTES 32
#define SSL_MIN_CHALLENGE_BYTES 16
#define SSL_MAX_CHALLENGE_BYTES 32
#define SSL_CHALLENGE_BYTES 16
#define SSL_CONNECTIONID_BYTES 16
#define SSL_MIN_CYPHER_ARG_BYTES 0
#define SSL_MAX_CYPHER_ARG_BYTES 32
#define SSL_MAX_MAC_BYTES 16
#define SSL3_RSA_PMS_LENGTH 48
#define SSL3_MASTER_SECRET_LENGTH 48
/* number of wrap mechanisms potentially used to wrap master secrets. */
#define SSL_NUM_WRAP_MECHS 16
/* This makes the cert cache entry exactly 4k. */
#define SSL_MAX_CACHED_CERT_LEN 4060
#define NUM_MIXERS 9
/* Mask of the 25 named curves we support. */
#define SSL3_ALL_SUPPORTED_CURVES_MASK 0x3fffffe
/* Mask of only 3 curves, suite B */
#define SSL3_SUITE_B_SUPPORTED_CURVES_MASK 0x3800000
#ifndef BPB
#define BPB 8 /* Bits Per Byte */
#endif
#define EXPORT_RSA_KEY_LENGTH 64 /* bytes */
#define INITIAL_DTLS_TIMEOUT_MS 1000 /* Default value from RFC 4347 = 1s*/
#define MAX_DTLS_TIMEOUT_MS 60000 /* 1 minute */
#define DTLS_FINISHED_TIMER_MS 120000 /* Time to wait in FINISHED state */
typedef struct sslBufferStr sslBuffer;
typedef struct sslConnectInfoStr sslConnectInfo;
typedef struct sslGatherStr sslGather;
typedef struct sslSecurityInfoStr sslSecurityInfo;
typedef struct sslSessionIDStr sslSessionID;
typedef struct sslSocketStr sslSocket;
typedef struct sslSocketOpsStr sslSocketOps;
typedef struct ssl3StateStr ssl3State;
typedef struct ssl3CertNodeStr ssl3CertNode;
typedef struct ssl3BulkCipherDefStr ssl3BulkCipherDef;
typedef struct ssl3MACDefStr ssl3MACDef;
typedef struct ssl3KeyPairStr ssl3KeyPair;
struct ssl3CertNodeStr {
struct ssl3CertNodeStr *next;
CERTCertificate * cert;
};
typedef SECStatus (*sslHandshakeFunc)(sslSocket *ss);
/* This type points to the low layer send func,
** e.g. ssl2_SendStream or ssl3_SendPlainText.
** These functions return the same values as PR_Send,
** i.e. >= 0 means number of bytes sent, < 0 means error.
*/
typedef PRInt32 (*sslSendFunc)(sslSocket *ss, const unsigned char *buf,
PRInt32 n, PRInt32 flags);
typedef void (*sslSessionIDCacheFunc) (sslSessionID *sid);
typedef void (*sslSessionIDUncacheFunc)(sslSessionID *sid);
typedef sslSessionID *(*sslSessionIDLookupFunc)(const PRIPv6Addr *addr,
unsigned char* sid,
unsigned int sidLen,
CERTCertDBHandle * dbHandle);
/* registerable callback function that either appends extension to buffer
* or returns length of data that it would have appended.
*/
typedef PRInt32 (*ssl3HelloExtensionSenderFunc)(sslSocket *ss, PRBool append,
PRUint32 maxBytes);
/* registerable callback function that handles a received extension,
* of the given type.
*/
typedef SECStatus (* ssl3HelloExtensionHandlerFunc)(sslSocket *ss,
PRUint16 ex_type,
SECItem * data);
/* row in a table of hello extension senders */
typedef struct {
PRInt32 ex_type;
ssl3HelloExtensionSenderFunc ex_sender;
} ssl3HelloExtensionSender;
/* row in a table of hello extension handlers */
typedef struct {
PRInt32 ex_type;
ssl3HelloExtensionHandlerFunc ex_handler;
} ssl3HelloExtensionHandler;
extern SECStatus
ssl3_RegisterServerHelloExtensionSender(sslSocket *ss, PRUint16 ex_type,
ssl3HelloExtensionSenderFunc cb);
extern PRInt32
ssl3_CallHelloExtensionSenders(sslSocket *ss, PRBool append, PRUint32 maxBytes,
const ssl3HelloExtensionSender *sender);
extern unsigned int
ssl3_CalculatePaddingExtensionLength(unsigned int clientHelloLength);
extern PRInt32
ssl3_AppendPaddingExtension(sslSocket *ss, unsigned int extensionLen,
PRUint32 maxBytes);
/* Socket ops */
struct sslSocketOpsStr {
int (*connect) (sslSocket *, const PRNetAddr *);
PRFileDesc *(*accept) (sslSocket *, PRNetAddr *);
int (*bind) (sslSocket *, const PRNetAddr *);
int (*listen) (sslSocket *, int);
int (*shutdown)(sslSocket *, int);
int (*close) (sslSocket *);
int (*recv) (sslSocket *, unsigned char *, int, int);
/* points to the higher-layer send func, e.g. ssl_SecureSend. */
int (*send) (sslSocket *, const unsigned char *, int, int);
int (*read) (sslSocket *, unsigned char *, int);
int (*write) (sslSocket *, const unsigned char *, int);
int (*getpeername)(sslSocket *, PRNetAddr *);
int (*getsockname)(sslSocket *, PRNetAddr *);
};
/* Flags interpreted by ssl send functions. */
#define ssl_SEND_FLAG_FORCE_INTO_BUFFER 0x40000000
#define ssl_SEND_FLAG_NO_BUFFER 0x20000000
#define ssl_SEND_FLAG_USE_EPOCH 0x10000000 /* DTLS only */
#define ssl_SEND_FLAG_NO_RETRANSMIT 0x08000000 /* DTLS only */
#define ssl_SEND_FLAG_CAP_RECORD_VERSION \
0x04000000 /* TLS only */
#define ssl_SEND_FLAG_MASK 0x7f000000
/*
** A buffer object.
*/
struct sslBufferStr {
unsigned char * buf;
unsigned int len;
unsigned int space;
};
/*
** SSL3 cipher suite policy and preference struct.
*/
typedef struct {
#if !defined(_WIN32)
unsigned int cipher_suite : 16;
unsigned int policy : 8;
unsigned int enabled : 1;
unsigned int isPresent : 1;
#else
ssl3CipherSuite cipher_suite;
PRUint8 policy;
unsigned char enabled : 1;
unsigned char isPresent : 1;
#endif
} ssl3CipherSuiteCfg;
#ifndef NSS_DISABLE_ECC
#define ssl_V3_SUITES_IMPLEMENTED 61
#else
#define ssl_V3_SUITES_IMPLEMENTED 37
#endif /* NSS_DISABLE_ECC */
#define MAX_DTLS_SRTP_CIPHER_SUITES 4
typedef struct sslOptionsStr {
/* If SSL_SetNextProtoNego has been called, then this contains the
* list of supported protocols. */
SECItem nextProtoNego;
unsigned int useSecurity : 1; /* 1 */
unsigned int useSocks : 1; /* 2 */
unsigned int requestCertificate : 1; /* 3 */
unsigned int requireCertificate : 2; /* 4-5 */
unsigned int handshakeAsClient : 1; /* 6 */
unsigned int handshakeAsServer : 1; /* 7 */
unsigned int enableSSL2 : 1; /* 8 */
unsigned int unusedBit9 : 1; /* 9 */
unsigned int unusedBit10 : 1; /* 10 */
unsigned int noCache : 1; /* 11 */
unsigned int fdx : 1; /* 12 */
unsigned int v2CompatibleHello : 1; /* 13 */
unsigned int detectRollBack : 1; /* 14 */
unsigned int noStepDown : 1; /* 15 */
unsigned int bypassPKCS11 : 1; /* 16 */
unsigned int noLocks : 1; /* 17 */
unsigned int enableSessionTickets : 1; /* 18 */
unsigned int enableDeflate : 1; /* 19 */
unsigned int enableRenegotiation : 2; /* 20-21 */
unsigned int requireSafeNegotiation : 1; /* 22 */
unsigned int enableFalseStart : 1; /* 23 */
unsigned int cbcRandomIV : 1; /* 24 */
unsigned int enableOCSPStapling : 1; /* 25 */
unsigned int enableNPN : 1; /* 26 */
unsigned int enableALPN : 1; /* 27 */
} sslOptions;
typedef enum { sslHandshakingUndetermined = 0,
sslHandshakingAsClient,
sslHandshakingAsServer
} sslHandshakingType;
typedef struct sslServerCertsStr {
/* Configuration state for server sockets */
CERTCertificate * serverCert;
CERTCertificateList * serverCertChain;
ssl3KeyPair * serverKeyPair;
unsigned int serverKeyBits;
} sslServerCerts;
#define SERVERKEY serverKeyPair->privKey
#define SSL_LOCK_RANK_SPEC 255
#define SSL_LOCK_RANK_GLOBAL NSS_RWLOCK_RANK_NONE
/* These are the valid values for shutdownHow.
** These values are each 1 greater than the NSPR values, and the code
** depends on that relation to efficiently convert PR_SHUTDOWN values
** into ssl_SHUTDOWN values. These values use one bit for read, and
** another bit for write, and can be used as bitmasks.
*/
#define ssl_SHUTDOWN_NONE 0 /* NOT shutdown at all */
#define ssl_SHUTDOWN_RCV 1 /* PR_SHUTDOWN_RCV +1 */
#define ssl_SHUTDOWN_SEND 2 /* PR_SHUTDOWN_SEND +1 */
#define ssl_SHUTDOWN_BOTH 3 /* PR_SHUTDOWN_BOTH +1 */
/*
** A gather object. Used to read some data until a count has been
** satisfied. Primarily for support of async sockets.
** Everything in here is protected by the recvBufLock.
*/
struct sslGatherStr {
int state; /* see GS_ values below. */ /* ssl 2 & 3 */
/* "buf" holds received plaintext SSL records, after decrypt and MAC check.
* SSL2: recv'd ciphertext records are put here, then decrypted in place.
* SSL3: recv'd ciphertext records are put in inbuf (see below), then
* decrypted into buf.
*/
sslBuffer buf; /*recvBufLock*/ /* ssl 2 & 3 */
/* number of bytes previously read into hdr or buf(ssl2) or inbuf (ssl3).
** (offset - writeOffset) is the number of ciphertext bytes read in but
** not yet deciphered.
*/
unsigned int offset; /* ssl 2 & 3 */
/* number of bytes to read in next call to ssl_DefRecv (recv) */
unsigned int remainder; /* ssl 2 & 3 */
/* Number of ciphertext bytes to read in after 2-byte SSL record header. */
unsigned int count; /* ssl2 only */
/* size of the final plaintext record.
** == count - (recordPadding + MAC size)
*/
unsigned int recordLen; /* ssl2 only */
/* number of bytes of padding to be removed after decrypting. */
/* This value is taken from the record's hdr[2], which means a too large
* value could crash us.
*/
unsigned int recordPadding; /* ssl2 only */
/* plaintext DATA begins this many bytes into "buf". */
unsigned int recordOffset; /* ssl2 only */
int encrypted; /* SSL2 session is now encrypted. ssl2 only */
/* These next two values are used by SSL2 and SSL3.
** DoRecv uses them to extract application data.
** The difference between writeOffset and readOffset is the amount of
** data available to the application. Note that the actual offset of
** the data in "buf" is recordOffset (above), not readOffset.
** In the current implementation, this is made available before the
** MAC is checked!!
*/
unsigned int readOffset; /* Spot where DATA reader (e.g. application
** or handshake code) will read next.
** Always zero for SSl3 application data.
*/
/* offset in buf/inbuf/hdr into which new data will be read from socket. */
unsigned int writeOffset;
/* Buffer for ssl3 to read (encrypted) data from the socket */
sslBuffer inbuf; /*recvBufLock*/ /* ssl3 only */
/* The ssl[23]_GatherData functions read data into this buffer, rather
** than into buf or inbuf, while in the GS_HEADER state.
** The portion of the SSL record header put here always comes off the wire
** as plaintext, never ciphertext.
** For SSL2, the plaintext portion is two bytes long. For SSl3 it is 5.
** For DTLS it is 13.
*/
unsigned char hdr[13]; /* ssl 2 & 3 or dtls */
/* Buffer for DTLS data read off the wire as a single datagram */
sslBuffer dtlsPacket;
/* the start of the buffered DTLS record in dtlsPacket */
unsigned int dtlsPacketOffset;
};
/* sslGather.state */
#define GS_INIT 0
#define GS_HEADER 1
#define GS_MAC 2
#define GS_DATA 3
#define GS_PAD 4
/*
** ssl3State and CipherSpec structs
*/
/* The SSL bulk cipher definition */
typedef enum {
cipher_null,
cipher_rc4,
cipher_rc4_40,
cipher_rc4_56,
cipher_rc2,
cipher_rc2_40,
cipher_des,
cipher_3des,
cipher_des40,
cipher_idea,
cipher_aes_128,
cipher_aes_256,
cipher_camellia_128,
cipher_camellia_256,
cipher_seed,
cipher_aes_128_gcm,
cipher_missing /* reserved for no such supported cipher */
/* This enum must match ssl3_cipherName[] in ssl3con.c. */
} SSL3BulkCipher;
typedef enum { type_stream, type_block, type_aead } CipherType;
#define MAX_IV_LENGTH 24
/*
* Do not depend upon 64 bit arithmetic in the underlying machine.
*/
typedef struct {
PRUint32 high;
PRUint32 low;
} SSL3SequenceNumber;
typedef PRUint16 DTLSEpoch;
typedef void (*DTLSTimerCb)(sslSocket *);
#define MAX_MAC_CONTEXT_BYTES 400 /* 400 is large enough for MD5, SHA-1, and
* SHA-256. For SHA-384 support, increase
* it to 712. */
#define MAX_MAC_CONTEXT_LLONGS (MAX_MAC_CONTEXT_BYTES / 8)
#define MAX_CIPHER_CONTEXT_BYTES 2080
#define MAX_CIPHER_CONTEXT_LLONGS (MAX_CIPHER_CONTEXT_BYTES / 8)
typedef struct {
SSL3Opaque wrapped_master_secret[48];
PRUint16 wrapped_master_secret_len;
PRUint8 msIsWrapped;
PRUint8 resumable;
} ssl3SidKeys; /* 52 bytes */
typedef struct {
PK11SymKey *write_key;
PK11SymKey *write_mac_key;
PK11Context *write_mac_context;
SECItem write_key_item;
SECItem write_iv_item;
SECItem write_mac_key_item;
SSL3Opaque write_iv[MAX_IV_LENGTH];
PRUint64 cipher_context[MAX_CIPHER_CONTEXT_LLONGS];
} ssl3KeyMaterial;
typedef SECStatus (*SSLCipher)(void * context,
unsigned char * out,
int * outlen,
int maxout,
const unsigned char *in,
int inlen);
typedef SECStatus (*SSLAEADCipher)(
ssl3KeyMaterial * keys,
PRBool doDecrypt,
unsigned char * out,
int * outlen,
int maxout,
const unsigned char *in,
int inlen,
const unsigned char *additionalData,
int additionalDataLen);
typedef SECStatus (*SSLCompressor)(void * context,
unsigned char * out,
int * outlen,
int maxout,
const unsigned char *in,
int inlen);
typedef SECStatus (*SSLDestroy)(void *context, PRBool freeit);
/* The DTLS anti-replay window. Defined here because we need it in
* the cipher spec. Note that this is a ring buffer but left and
* right represent the true window, with modular arithmetic used to
* map them onto the buffer.
*/
#define DTLS_RECVD_RECORDS_WINDOW 1024 /* Packets; approximate
* Must be divisible by 8
*/
typedef struct DTLSRecvdRecordsStr {
unsigned char data[DTLS_RECVD_RECORDS_WINDOW/8];
PRUint64 left;
PRUint64 right;
} DTLSRecvdRecords;
/*
** These are the "specs" in the "ssl3" struct.
** Access to the pointers to these specs, and all the specs' contents
** (direct and indirect) is protected by the reader/writer lock ss->specLock.
*/
typedef struct {
const ssl3BulkCipherDef *cipher_def;
const ssl3MACDef * mac_def;
SSLCompressionMethod compression_method;
int mac_size;
SSLCipher encode;
SSLCipher decode;
SSLAEADCipher aead;
SSLDestroy destroy;
void * encodeContext;
void * decodeContext;
SSLCompressor compressor; /* Don't name these fields compress */
SSLCompressor decompressor; /* and uncompress because zconf.h */
/* may define them as macros. */
SSLDestroy destroyCompressContext;
void * compressContext;
SSLDestroy destroyDecompressContext;
void * decompressContext;
PRBool bypassCiphers; /* did double bypass (at least) */
PK11SymKey * master_secret;
SSL3SequenceNumber write_seq_num;
SSL3SequenceNumber read_seq_num;
SSL3ProtocolVersion version;
ssl3KeyMaterial client;
ssl3KeyMaterial server;
SECItem msItem;
unsigned char key_block[NUM_MIXERS * MD5_LENGTH];
unsigned char raw_master_secret[56];
SECItem srvVirtName; /* for server: name that was negotiated
* with a client. For client - is
* always set to NULL.*/
DTLSEpoch epoch;
DTLSRecvdRecords recvdRecords;
} ssl3CipherSpec;
typedef enum { never_cached,
in_client_cache,
in_server_cache,
invalid_cache /* no longer in any cache. */
} Cached;
struct sslSessionIDStr {
/* The global cache lock must be held when accessing these members when the
* sid is in any cache.
*/
sslSessionID * next; /* chain used for client sockets, only */
Cached cached;
int references;
PRUint32 lastAccessTime; /* seconds since Jan 1, 1970 */
/* The rest of the members, except for the members of u.ssl3.locked, may
* be modified only when the sid is not in any cache.
*/
CERTCertificate * peerCert;
SECItemArray peerCertStatus; /* client only */
const char * peerID; /* client only */
const char * urlSvrName; /* client only */
CERTCertificate * localCert;
PRIPv6Addr addr;
PRUint16 port;
SSL3ProtocolVersion version;
PRUint32 creationTime; /* seconds since Jan 1, 1970 */
PRUint32 expirationTime; /* seconds since Jan 1, 1970 */
SSLSignType authAlgorithm;
PRUint32 authKeyBits;
SSLKEAType keaType;
PRUint32 keaKeyBits;
union {
struct {
/* the V2 code depends upon the size of sessionID. */
unsigned char sessionID[SSL2_SESSIONID_BYTES];
/* Stuff used to recreate key and read/write cipher objects */
SECItem masterKey; /* never wrapped */
int cipherType;
SECItem cipherArg;
int keyBits;
int secretKeyBits;
} ssl2;
struct {
/* values that are copied into the server's on-disk SID cache. */
PRUint8 sessionIDLength;
SSL3Opaque sessionID[SSL3_SESSIONID_BYTES];
ssl3CipherSuite cipherSuite;
SSLCompressionMethod compression;
int policy;
ssl3SidKeys keys;
CK_MECHANISM_TYPE masterWrapMech;
/* mechanism used to wrap master secret */
SSL3KEAType exchKeyType;
/* key type used in exchange algorithm,
* and to wrap the sym wrapping key. */
#ifndef NSS_DISABLE_ECC
PRUint32 negotiatedECCurves;
#endif /* NSS_DISABLE_ECC */
/* The following values are NOT restored from the server's on-disk
* session cache, but are restored from the client's cache.
*/
PK11SymKey * clientWriteKey;
PK11SymKey * serverWriteKey;
/* The following values pertain to the slot that wrapped the
** master secret. (used only in client)
*/
SECMODModuleID masterModuleID;
/* what module wrapped the master secret */
CK_SLOT_ID masterSlotID;
PRUint16 masterWrapIndex;
/* what's the key index for the wrapping key */
PRUint16 masterWrapSeries;
/* keep track of the slot series, so we don't
* accidently try to use new keys after the
* card gets removed and replaced.*/
/* The following values pertain to the slot that did the signature
** for client auth. (used only in client)
*/
SECMODModuleID clAuthModuleID;
CK_SLOT_ID clAuthSlotID;
PRUint16 clAuthSeries;
char masterValid;
char clAuthValid;
SECItem srvName;
/* This lock is lazily initialized by CacheSID when a sid is first
* cached. Before then, there is no need to lock anything because
* the sid isn't being shared by anything.
*/
PRRWLock *lock;
/* The lock must be held while reading or writing these members
* because they change while the sid is cached.
*/
struct {
/* The session ticket, if we have one, is sent as an extension
* in the ClientHello message. This field is used only by
* clients. It is protected by lock when lock is non-null
* (after the sid has been added to the client session cache).
*/
NewSessionTicket sessionTicket;
} locked;
} ssl3;
} u;
};
typedef struct ssl3CipherSuiteDefStr {
ssl3CipherSuite cipher_suite;
SSL3BulkCipher bulk_cipher_alg;
SSL3MACAlgorithm mac_alg;
SSL3KeyExchangeAlgorithm key_exchange_alg;
} ssl3CipherSuiteDef;
/*
** There are tables of these, all const.
*/
typedef struct {
SSL3KeyExchangeAlgorithm kea;
SSL3KEAType exchKeyType;
SSL3SignType signKeyType;
PRBool is_limited;
int key_size_limit;
PRBool tls_keygen;
} ssl3KEADef;
/*
** There are tables of these, all const.
*/
struct ssl3BulkCipherDefStr {
SSL3BulkCipher cipher;
SSLCipherAlgorithm calg;
int key_size;
int secret_key_size;
CipherType type;
int iv_size;
int block_size;
int tag_size; /* authentication tag size for AEAD ciphers. */
int explicit_nonce_size; /* for AEAD ciphers. */
};
/*
** There are tables of these, all const.
*/
struct ssl3MACDefStr {
SSL3MACAlgorithm mac;
CK_MECHANISM_TYPE mmech;
int pad_size;
int mac_size;
};
typedef enum {
wait_client_hello,
wait_client_cert,
wait_client_key,
wait_cert_verify,
wait_change_cipher,
wait_finished,
wait_server_hello,
wait_certificate_status,
wait_server_cert,
wait_server_key,
wait_cert_request,
wait_hello_done,
wait_new_session_ticket,
idle_handshake
} SSL3WaitState;
/*
* TLS extension related constants and data structures.
*/
typedef struct TLSExtensionDataStr TLSExtensionData;
typedef struct SessionTicketDataStr SessionTicketData;
struct TLSExtensionDataStr {
/* registered callbacks that send server hello extensions */
ssl3HelloExtensionSender serverSenders[SSL_MAX_EXTENSIONS];
/* Keep track of the extensions that are negotiated. */
PRUint16 numAdvertised;
PRUint16 numNegotiated;
PRUint16 advertised[SSL_MAX_EXTENSIONS];
PRUint16 negotiated[SSL_MAX_EXTENSIONS];
/* SessionTicket Extension related data. */
PRBool ticketTimestampVerified;
PRBool emptySessionTicket;
PRBool sentSessionTicketInClientHello;
/* SNI Extension related data
* Names data is not coppied from the input buffer. It can not be
* used outside the scope where input buffer is defined and that
* is beyond ssl3_HandleClientHello function. */
SECItem *sniNameArr;
PRUint32 sniNameArrSize;
};
typedef SECStatus (*sslRestartTarget)(sslSocket *);
/*
** A DTLS queued message (potentially to be retransmitted)
*/
typedef struct DTLSQueuedMessageStr {
PRCList link; /* The linked list link */
DTLSEpoch epoch; /* The epoch to use */
SSL3ContentType type; /* The message type */
unsigned char *data; /* The data */
PRUint16 len; /* The data length */
} DTLSQueuedMessage;
typedef enum {
handshake_hash_unknown = 0,
handshake_hash_combo = 1, /* The MD5/SHA-1 combination */
handshake_hash_single = 2 /* A single hash */
} SSL3HandshakeHashType;
/*
** This is the "hs" member of the "ssl3" struct.
** This entire struct is protected by ssl3HandshakeLock
*/
typedef struct SSL3HandshakeStateStr {
SSL3Random server_random;
SSL3Random client_random;
SSL3WaitState ws;
/* This group of members is used for handshake running hashes. */
SSL3HandshakeHashType hashType;
sslBuffer messages; /* Accumulated handshake messages */
#ifndef NO_PKCS11_BYPASS
/* Bypass mode:
* SSL 3.0 - TLS 1.1 use both |md5_cx| and |sha_cx|. |md5_cx| is used for
* MD5 and |sha_cx| for SHA-1.
* TLS 1.2 and later use only |sha_cx|, for SHA-256. NOTE: When we support
* SHA-384, increase MAX_MAC_CONTEXT_BYTES to 712. */
PRUint64 md5_cx[MAX_MAC_CONTEXT_LLONGS];
PRUint64 sha_cx[MAX_MAC_CONTEXT_LLONGS];
const SECHashObject * sha_obj;
/* The function prototype of sha_obj->clone() does not match the prototype
* of the freebl <HASH>_Clone functions, so we need a dedicated function
* pointer for the <HASH>_Clone function. */
void (*sha_clone)(void *dest, void *src);
#endif
/* PKCS #11 mode:
* SSL 3.0 - TLS 1.1 use both |md5| and |sha|. |md5| is used for MD5 and
* |sha| for SHA-1.
* TLS 1.2 and later use only |sha|, for SHA-256. */
/* NOTE: On the client side, TLS 1.2 and later use |md5| as a backup
* handshake hash for generating client auth signatures. Confusingly, the
* backup hash function is SHA-1. */
#define backupHash md5
PK11Context * md5;
PK11Context * sha;
const ssl3KEADef * kea_def;
ssl3CipherSuite cipher_suite;
const ssl3CipherSuiteDef *suite_def;
SSLCompressionMethod compression;
sslBuffer msg_body; /* protected by recvBufLock */
/* partial handshake message from record layer */
unsigned int header_bytes;
/* number of bytes consumed from handshake */
/* message for message type and header length */
SSL3HandshakeType msg_type;
unsigned long msg_len;
SECItem ca_list; /* used only by client */
PRBool isResuming; /* are we resuming a session */
PRBool usedStepDownKey; /* we did a server key exchange. */
PRBool sendingSCSV; /* instead of empty RI */
sslBuffer msgState; /* current state for handshake messages*/
/* protected by recvBufLock */
/* The session ticket received in a NewSessionTicket message is temporarily
* stored in newSessionTicket until the handshake is finished; then it is
* moved to the sid.
*/
PRBool receivedNewSessionTicket;
NewSessionTicket newSessionTicket;
PRUint16 finishedBytes; /* size of single finished below */
union {
TLSFinished tFinished[2]; /* client, then server */
SSL3Finished sFinished[2];
SSL3Opaque data[72];
} finishedMsgs;
#ifndef NSS_DISABLE_ECC
PRUint32 negotiatedECCurves; /* bit mask */
#endif /* NSS_DISABLE_ECC */
PRBool authCertificatePending;
/* Which function should SSL_RestartHandshake* call if we're blocked?
* One of NULL, ssl3_SendClientSecondRound, ssl3_FinishHandshake,
* or ssl3_AlwaysFail */
sslRestartTarget restartTarget;
/* Shared state between ssl3_HandleFinished and ssl3_FinishHandshake */
PRBool cacheSID;
PRBool canFalseStart; /* Can/did we False Start */
/* clientSigAndHash contains the contents of the signature_algorithms
* extension (if any) from the client. This is only valid for TLS 1.2
* or later. */
SSL3SignatureAndHashAlgorithm *clientSigAndHash;
unsigned int numClientSigAndHash;
/* This group of values is used for DTLS */
PRUint16 sendMessageSeq; /* The sending message sequence
* number */
PRCList lastMessageFlight; /* The last message flight we
* sent */
PRUint16 maxMessageSent; /* The largest message we sent */
PRUint16 recvMessageSeq; /* The receiving message sequence
* number */
sslBuffer recvdFragments; /* The fragments we have received in
* a bitmask */
PRInt32 recvdHighWater; /* The high water mark for fragments
* received. -1 means no reassembly
* in progress. */
unsigned char cookie[32]; /* The cookie */
unsigned char cookieLen; /* The length of the cookie */
PRIntervalTime rtTimerStarted; /* When the timer was started */
DTLSTimerCb rtTimerCb; /* The function to call on expiry */
PRUint32 rtTimeoutMs; /* The length of the current timeout
* used for backoff (in ms) */
PRUint32 rtRetries; /* The retry counter */
} SSL3HandshakeState;
/*
** This is the "ssl3" struct, as in "ss->ssl3".
** note:
** usually, crSpec == cwSpec and prSpec == pwSpec.
** Sometimes, crSpec == pwSpec and prSpec == cwSpec.
** But there are never more than 2 actual specs.
** No spec must ever be modified if either "current" pointer points to it.
*/
struct ssl3StateStr {
/*
** The following Specs and Spec pointers must be protected using the
** Spec Lock.
*/
ssl3CipherSpec * crSpec; /* current read spec. */
ssl3CipherSpec * prSpec; /* pending read spec. */
ssl3CipherSpec * cwSpec; /* current write spec. */
ssl3CipherSpec * pwSpec; /* pending write spec. */
CERTCertificate * clientCertificate; /* used by client */
SECKEYPrivateKey * clientPrivateKey; /* used by client */
CERTCertificateList *clientCertChain; /* used by client */
PRBool sendEmptyCert; /* used by client */
int policy;
/* This says what cipher suites we can do, and should
* be either SSL_ALLOWED or SSL_RESTRICTED
*/
PLArenaPool * peerCertArena;
/* These are used to keep track of the peer CA */
void * peerCertChain;
/* chain while we are trying to validate it. */
CERTDistNames * ca_list;
/* used by server. trusted CAs for this socket. */
PRBool initialized;
SSL3HandshakeState hs;
ssl3CipherSpec specs[2]; /* one is current, one is pending. */
/* In a client: if the server supports Next Protocol Negotiation, then
* this is the protocol that was negotiated.
*/
SECItem nextProto;
SSLNextProtoState nextProtoState;
PRUint16 mtu; /* Our estimate of the MTU */
/* DTLS-SRTP cipher suite preferences (if any) */
PRUint16 dtlsSRTPCiphers[MAX_DTLS_SRTP_CIPHER_SUITES];
PRUint16 dtlsSRTPCipherCount;
PRUint16 dtlsSRTPCipherSuite; /* 0 if not selected */
};
#define DTLS_MAX_MTU 1500 /* Ethernet MTU but without subtracting the
* headers, so slightly larger than expected */
#define IS_DTLS(ss) (ss->protocolVariant == ssl_variant_datagram)
typedef struct {
SSL3ContentType type;
SSL3ProtocolVersion version;
SSL3SequenceNumber seq_num; /* DTLS only */
sslBuffer * buf;
} SSL3Ciphertext;
struct ssl3KeyPairStr {
SECKEYPrivateKey * privKey;
SECKEYPublicKey * pubKey;
PRInt32 refCount; /* use PR_Atomic calls for this. */
};
typedef struct SSLWrappedSymWrappingKeyStr {
SSL3Opaque wrappedSymmetricWrappingkey[512];
CK_MECHANISM_TYPE symWrapMechanism;
/* unwrapped symmetric wrapping key uses this mechanism */
CK_MECHANISM_TYPE asymWrapMechanism;
/* mechanism used to wrap the SymmetricWrappingKey using
* server's public and/or private keys. */
SSL3KEAType exchKeyType; /* type of keys used to wrap SymWrapKey*/
PRInt32 symWrapMechIndex;
PRUint16 wrappedSymKeyLen;
} SSLWrappedSymWrappingKey;
typedef struct SessionTicketStr {
PRUint16 ticket_version;
SSL3ProtocolVersion ssl_version;
ssl3CipherSuite cipher_suite;
SSLCompressionMethod compression_method;
SSLSignType authAlgorithm;
PRUint32 authKeyBits;
SSLKEAType keaType;
PRUint32 keaKeyBits;
/*
* exchKeyType and msWrapMech contain meaningful values only if
* ms_is_wrapped is true.
*/
PRUint8 ms_is_wrapped;
SSLKEAType exchKeyType; /* XXX(wtc): same as keaType above? */
CK_MECHANISM_TYPE msWrapMech;
PRUint16 ms_length;
SSL3Opaque master_secret[48];
ClientIdentity client_identity;
SECItem peer_cert;
PRUint32 timestamp;
SECItem srvName; /* negotiated server name */
} SessionTicket;
/*
* SSL2 buffers used in SSL3.
* writeBuf in the SecurityInfo maintained by sslsecur.c is used
* to hold the data just about to be passed to the kernel
* sendBuf in the ConnectInfo maintained by sslcon.c is used
* to hold handshake messages as they are accumulated
*/
/*
** This is "ci", as in "ss->sec.ci".
**
** Protection: All the variables in here are protected by
** firstHandshakeLock AND (in ssl3) ssl3HandshakeLock
*/
struct sslConnectInfoStr {
/* outgoing handshakes appended to this. */
sslBuffer sendBuf; /*xmitBufLock*/ /* ssl 2 & 3 */
PRIPv6Addr peer; /* ssl 2 & 3 */
unsigned short port; /* ssl 2 & 3 */
sslSessionID *sid; /* ssl 2 & 3 */
/* see CIS_HAVE defines below for the bit values in *elements. */
char elements; /* ssl2 only */
char requiredElements; /* ssl2 only */
char sentElements; /* ssl2 only */
char sentFinished; /* ssl2 only */
/* Length of server challenge. Used by client when saving challenge */
int serverChallengeLen; /* ssl2 only */
/* type of authentication requested by server */
unsigned char authType; /* ssl2 only */
/* Challenge sent by client to server in client-hello message */
/* SSL3 gets a copy of this. See ssl3_StartHandshakeHash(). */
unsigned char clientChallenge[SSL_MAX_CHALLENGE_BYTES]; /* ssl 2 & 3 */
/* Connection-id sent by server to client in server-hello message */
unsigned char connectionID[SSL_CONNECTIONID_BYTES]; /* ssl2 only */
/* Challenge sent by server to client in request-certificate message */
unsigned char serverChallenge[SSL_MAX_CHALLENGE_BYTES]; /* ssl2 only */
/* Information kept to handle a request-certificate message */
unsigned char readKey[SSL_MAX_MASTER_KEY_BYTES]; /* ssl2 only */
unsigned char writeKey[SSL_MAX_MASTER_KEY_BYTES]; /* ssl2 only */
unsigned keySize; /* ssl2 only */
};
/* bit values for ci->elements, ci->requiredElements, sentElements. */
#define CIS_HAVE_MASTER_KEY 0x01
#define CIS_HAVE_CERTIFICATE 0x02
#define CIS_HAVE_FINISHED 0x04
#define CIS_HAVE_VERIFY 0x08
/* Note: The entire content of this struct and whatever it points to gets
* blown away by SSL_ResetHandshake(). This is "sec" as in "ss->sec".
*
* Unless otherwise specified below, the contents of this struct are
* protected by firstHandshakeLock AND (in ssl3) ssl3HandshakeLock.
*/
struct sslSecurityInfoStr {
sslSendFunc send; /*xmitBufLock*/ /* ssl 2 & 3 */
int isServer; /* Spec Lock?*/ /* ssl 2 & 3 */
sslBuffer writeBuf; /*xmitBufLock*/ /* ssl 2 & 3 */
int cipherType; /* ssl 2 & 3 */
int keyBits; /* ssl 2 & 3 */
int secretKeyBits; /* ssl 2 & 3 */
CERTCertificate *localCert; /* ssl 2 & 3 */
CERTCertificate *peerCert; /* ssl 2 & 3 */
SECKEYPublicKey *peerKey; /* ssl3 only */
SSLSignType authAlgorithm;
PRUint32 authKeyBits;
SSLKEAType keaType;
PRUint32 keaKeyBits;
/*
** Procs used for SID cache (nonce) management.
** Different implementations exist for clients/servers
** The lookup proc is only used for servers. Baloney!
*/
sslSessionIDCacheFunc cache; /* ssl 2 & 3 */
sslSessionIDUncacheFunc uncache; /* ssl 2 & 3 */
/*
** everything below here is for ssl2 only.
** This stuff is equivalent to SSL3's "spec", and is protected by the
** same "Spec Lock" as used for SSL3's specs.
*/
PRUint32 sendSequence; /*xmitBufLock*/ /* ssl2 only */
PRUint32 rcvSequence; /*recvBufLock*/ /* ssl2 only */
/* Hash information; used for one-way-hash functions (MD2, MD5, etc.) */
const SECHashObject *hash; /* Spec Lock */ /* ssl2 only */
void *hashcx; /* Spec Lock */ /* ssl2 only */
SECItem sendSecret; /* Spec Lock */ /* ssl2 only */
SECItem rcvSecret; /* Spec Lock */ /* ssl2 only */
/* Session cypher contexts; one for each direction */
void *readcx; /* Spec Lock */ /* ssl2 only */
void *writecx; /* Spec Lock */ /* ssl2 only */
SSLCipher enc; /* Spec Lock */ /* ssl2 only */
SSLCipher dec; /* Spec Lock */ /* ssl2 only */
void (*destroy)(void *, PRBool); /* Spec Lock */ /* ssl2 only */
/* Blocking information for the session cypher */
int blockShift; /* Spec Lock */ /* ssl2 only */
int blockSize; /* Spec Lock */ /* ssl2 only */
/* These are used during a connection handshake */
sslConnectInfo ci; /* ssl 2 & 3 */
};
/*
** SSL Socket struct
**
** Protection: XXX
*/
struct sslSocketStr {
PRFileDesc * fd;
/* Pointer to operations vector for this socket */
const sslSocketOps * ops;
/* SSL socket options */
sslOptions opt;
/* Enabled version range */
SSLVersionRange vrange;
/* State flags */
unsigned long clientAuthRequested;
unsigned long delayDisabled; /* Nagle delay disabled */
unsigned long firstHsDone; /* first handshake is complete. */
unsigned long enoughFirstHsDone; /* enough of the first handshake is
* done for callbacks to be able to
* retrieve channel security
* parameters from the SSL socket. */
unsigned long handshakeBegun;
unsigned long lastWriteBlocked;
unsigned long recvdCloseNotify; /* received SSL EOF. */
unsigned long TCPconnected;
unsigned long appDataBuffered;
unsigned long peerRequestedProtection; /* from old renegotiation */
/* version of the protocol to use */
SSL3ProtocolVersion version;
SSL3ProtocolVersion clientHelloVersion; /* version sent in client hello. */
sslSecurityInfo sec; /* not a pointer any more */
/* protected by firstHandshakeLock AND (in ssl3) ssl3HandshakeLock. */
const char *url; /* ssl 2 & 3 */
sslHandshakeFunc handshake; /*firstHandshakeLock*/
sslHandshakeFunc nextHandshake; /*firstHandshakeLock*/
sslHandshakeFunc securityHandshake; /*firstHandshakeLock*/
/* the following variable is only used with socks or other proxies. */
char * peerID; /* String uniquely identifies target server. */
unsigned char * cipherSpecs;
unsigned int sizeCipherSpecs;
const unsigned char * preferredCipher;
ssl3KeyPair * stepDownKeyPair; /* RSA step down keys */
/* Callbacks */
SSLAuthCertificate authCertificate;
void *authCertificateArg;
SSLGetClientAuthData getClientAuthData;
void *getClientAuthDataArg;
SSLSNISocketConfig sniSocketConfig;
void *sniSocketConfigArg;
SSLBadCertHandler handleBadCert;
void *badCertArg;
SSLHandshakeCallback handshakeCallback;
void *handshakeCallbackData;
SSLCanFalseStartCallback canFalseStartCallback;
void *canFalseStartCallbackData;
void *pkcs11PinArg;
SSLNextProtoCallback nextProtoCallback;
void *nextProtoArg;
PRIntervalTime rTimeout; /* timeout for NSPR I/O */
PRIntervalTime wTimeout; /* timeout for NSPR I/O */
PRIntervalTime cTimeout; /* timeout for NSPR I/O */
PZLock * recvLock; /* lock against multiple reader threads. */
PZLock * sendLock; /* lock against multiple sender threads. */
PZMonitor * recvBufLock; /* locks low level recv buffers. */
PZMonitor * xmitBufLock; /* locks low level xmit buffers. */
/* Only one thread may operate on the socket until the initial handshake
** is complete. This Monitor ensures that. Since SSL2 handshake is
** only done once, this is also effectively the SSL2 handshake lock.
*/
PZMonitor * firstHandshakeLock;
/* This monitor protects the ssl3 handshake state machine data.
** Only one thread (reader or writer) may be in the ssl3 handshake state
** machine at any time. */
PZMonitor * ssl3HandshakeLock;
/* reader/writer lock, protects the secret data needed to encrypt and MAC
** outgoing records, and to decrypt and MAC check incoming ciphertext
** records. */
NSSRWLock * specLock;
/* handle to perm cert db (and implicitly to the temp cert db) used
** with this socket.
*/
CERTCertDBHandle * dbHandle;
PRThread * writerThread; /* thread holds SSL_LOCK_WRITER lock */
PRUint16 shutdownHow; /* See ssl_SHUTDOWN defines below. */
PRUint16 allowedByPolicy; /* copy of global policy bits. */
PRUint16 maybeAllowedByPolicy; /* copy of global policy bits. */
PRUint16 chosenPreference; /* SSL2 cipher preferences. */
sslHandshakingType handshaking;
/* Gather object used for gathering data */
sslGather gs; /*recvBufLock*/
sslBuffer saveBuf; /*xmitBufLock*/
sslBuffer pendingBuf; /*xmitBufLock*/
/* Configuration state for server sockets */
/* server cert and key for each KEA type */
sslServerCerts serverCerts[kt_kea_size];
/* each cert needs its own status */
SECItemArray * certStatusArray[kt_kea_size];
ssl3CipherSuiteCfg cipherSuites[ssl_V3_SUITES_IMPLEMENTED];
ssl3KeyPair * ephemeralECDHKeyPair; /* for ECDHE-* handshake */
/* SSL3 state info. Formerly was a pointer */
ssl3State ssl3;
/*
* TLS extension related data.
*/
/* True when the current session is a stateless resume. */
PRBool statelessResume;
TLSExtensionData xtnData;
/* Whether we are doing stream or datagram mode */
SSLProtocolVariant protocolVariant;
};
/* All the global data items declared here should be protected using the
** ssl_global_data_lock, which is a reader/writer lock.
*/
extern NSSRWLock * ssl_global_data_lock;
extern char ssl_debug;
extern char ssl_trace;
extern FILE * ssl_trace_iob;
extern FILE * ssl_keylog_iob;
extern CERTDistNames * ssl3_server_ca_list;
extern PRUint32 ssl_sid_timeout;
extern PRUint32 ssl3_sid_timeout;
extern const char * const ssl_cipherName[];
extern const char * const ssl3_cipherName[];
extern sslSessionIDLookupFunc ssl_sid_lookup;
extern sslSessionIDCacheFunc ssl_sid_cache;
extern sslSessionIDUncacheFunc ssl_sid_uncache;
/************************************************************************/
SEC_BEGIN_PROTOS
/* Internal initialization and installation of the SSL error tables */
extern SECStatus ssl_Init(void);
extern SECStatus ssl_InitializePRErrorTable(void);
/* Implementation of ops for default (non socks, non secure) case */
extern int ssl_DefConnect(sslSocket *ss, const PRNetAddr *addr);
extern PRFileDesc *ssl_DefAccept(sslSocket *ss, PRNetAddr *addr);
extern int ssl_DefBind(sslSocket *ss, const PRNetAddr *addr);
extern int ssl_DefListen(sslSocket *ss, int backlog);
extern int ssl_DefShutdown(sslSocket *ss, int how);
extern int ssl_DefClose(sslSocket *ss);
extern int ssl_DefRecv(sslSocket *ss, unsigned char *buf, int len, int flags);
extern int ssl_DefSend(sslSocket *ss, const unsigned char *buf,
int len, int flags);
extern int ssl_DefRead(sslSocket *ss, unsigned char *buf, int len);
extern int ssl_DefWrite(sslSocket *ss, const unsigned char *buf, int len);
extern int ssl_DefGetpeername(sslSocket *ss, PRNetAddr *name);
extern int ssl_DefGetsockname(sslSocket *ss, PRNetAddr *name);
extern int ssl_DefGetsockopt(sslSocket *ss, PRSockOption optname,
void *optval, PRInt32 *optlen);
extern int ssl_DefSetsockopt(sslSocket *ss, PRSockOption optname,
const void *optval, PRInt32 optlen);
/* Implementation of ops for socks only case */
extern int ssl_SocksConnect(sslSocket *ss, const PRNetAddr *addr);
extern PRFileDesc *ssl_SocksAccept(sslSocket *ss, PRNetAddr *addr);
extern int ssl_SocksBind(sslSocket *ss, const PRNetAddr *addr);
extern int ssl_SocksListen(sslSocket *ss, int backlog);
extern int ssl_SocksGetsockname(sslSocket *ss, PRNetAddr *name);
extern int ssl_SocksRecv(sslSocket *ss, unsigned char *buf, int len, int flags);
extern int ssl_SocksSend(sslSocket *ss, const unsigned char *buf,
int len, int flags);
extern int ssl_SocksRead(sslSocket *ss, unsigned char *buf, int len);
extern int ssl_SocksWrite(sslSocket *ss, const unsigned char *buf, int len);
/* Implementation of ops for secure only case */
extern int ssl_SecureConnect(sslSocket *ss, const PRNetAddr *addr);
extern PRFileDesc *ssl_SecureAccept(sslSocket *ss, PRNetAddr *addr);
extern int ssl_SecureRecv(sslSocket *ss, unsigned char *buf,
int len, int flags);
extern int ssl_SecureSend(sslSocket *ss, const unsigned char *buf,
int len, int flags);
extern int ssl_SecureRead(sslSocket *ss, unsigned char *buf, int len);
extern int ssl_SecureWrite(sslSocket *ss, const unsigned char *buf, int len);
extern int ssl_SecureShutdown(sslSocket *ss, int how);
extern int ssl_SecureClose(sslSocket *ss);
/* Implementation of ops for secure socks case */
extern int ssl_SecureSocksConnect(sslSocket *ss, const PRNetAddr *addr);
extern PRFileDesc *ssl_SecureSocksAccept(sslSocket *ss, PRNetAddr *addr);
extern PRFileDesc *ssl_FindTop(sslSocket *ss);
/* Gather funcs. */
extern sslGather * ssl_NewGather(void);
extern SECStatus ssl_InitGather(sslGather *gs);
extern void ssl_DestroyGather(sslGather *gs);
extern int ssl2_GatherData(sslSocket *ss, sslGather *gs, int flags);
extern int ssl2_GatherRecord(sslSocket *ss, int flags);
extern SECStatus ssl_GatherRecord1stHandshake(sslSocket *ss);
extern SECStatus ssl2_HandleClientHelloMessage(sslSocket *ss);
extern SECStatus ssl2_HandleServerHelloMessage(sslSocket *ss);
extern SECStatus ssl_CreateSecurityInfo(sslSocket *ss);
extern SECStatus ssl_CopySecurityInfo(sslSocket *ss, sslSocket *os);
extern void ssl_ResetSecurityInfo(sslSecurityInfo *sec, PRBool doMemset);
extern void ssl_DestroySecurityInfo(sslSecurityInfo *sec);
extern void ssl_PrintBuf(sslSocket *ss, const char *msg, const void *cp, int len);
extern void ssl_DumpMsg(sslSocket *ss, unsigned char *bp, unsigned len);
extern int ssl_SendSavedWriteData(sslSocket *ss);
extern SECStatus ssl_SaveWriteData(sslSocket *ss,
const void* p, unsigned int l);
extern SECStatus ssl2_BeginClientHandshake(sslSocket *ss);
extern SECStatus ssl2_BeginServerHandshake(sslSocket *ss);
extern int ssl_Do1stHandshake(sslSocket *ss);
extern SECStatus sslBuffer_Grow(sslBuffer *b, unsigned int newLen);
extern SECStatus sslBuffer_Append(sslBuffer *b, const void * data,
unsigned int len);
extern void ssl2_UseClearSendFunc(sslSocket *ss);
extern void ssl_ChooseSessionIDProcs(sslSecurityInfo *sec);
extern sslSessionID *ssl3_NewSessionID(sslSocket *ss, PRBool is_server);
extern sslSessionID *ssl_LookupSID(const PRIPv6Addr *addr, PRUint16 port,
const char *peerID, const char *urlSvrName);
extern void ssl_FreeSID(sslSessionID *sid);
extern int ssl3_SendApplicationData(sslSocket *ss, const PRUint8 *in,
int len, int flags);
extern PRBool ssl_FdIsBlocking(PRFileDesc *fd);
extern PRBool ssl_SocketIsBlocking(sslSocket *ss);
extern void ssl3_SetAlwaysBlock(sslSocket *ss);
extern SECStatus ssl_EnableNagleDelay(sslSocket *ss, PRBool enabled);
extern void ssl_FinishHandshake(sslSocket *ss);
/* Returns PR_TRUE if we are still waiting for the server to respond to our
* client second round. Once we've received any part of the server's second
* round then we don't bother trying to false start since it is almost always
* the case that the NewSessionTicket, ChangeCipherSoec, and Finished messages
* were sent in the same packet and we want to process them all at the same
* time. If we were to try to false start in the middle of the server's second
* round, then we would increase the number of I/O operations
* (SSL_ForceHandshake/PR_Recv/PR_Send/etc.) needed to finish the handshake.
*/
extern PRBool ssl3_WaitingForStartOfServerSecondRound(sslSocket *ss);
extern SECStatus
ssl3_CompressMACEncryptRecord(ssl3CipherSpec * cwSpec,
PRBool isServer,
PRBool isDTLS,
PRBool capRecordVersion,
SSL3ContentType type,
const SSL3Opaque * pIn,
PRUint32 contentLen,
sslBuffer * wrBuf);
extern PRInt32 ssl3_SendRecord(sslSocket *ss, DTLSEpoch epoch,
SSL3ContentType type,
const SSL3Opaque* pIn, PRInt32 nIn,
PRInt32 flags);
#ifdef NSS_ENABLE_ZLIB
/*
* The DEFLATE algorithm can result in an expansion of 0.1% + 12 bytes. For a
* maximum TLS record payload of 2**14 bytes, that's 29 bytes.
*/
#define SSL3_COMPRESSION_MAX_EXPANSION 29
#else /* !NSS_ENABLE_ZLIB */
#define SSL3_COMPRESSION_MAX_EXPANSION 0
#endif
/*
* make sure there is room in the write buffer for padding and
* other compression and cryptographic expansions.
*/
#define SSL3_BUFFER_FUDGE 100 + SSL3_COMPRESSION_MAX_EXPANSION
#define SSL_LOCK_READER(ss) if (ss->recvLock) PZ_Lock(ss->recvLock)
#define SSL_UNLOCK_READER(ss) if (ss->recvLock) PZ_Unlock(ss->recvLock)
#define SSL_LOCK_WRITER(ss) if (ss->sendLock) PZ_Lock(ss->sendLock)
#define SSL_UNLOCK_WRITER(ss) if (ss->sendLock) PZ_Unlock(ss->sendLock)
/* firstHandshakeLock -> recvBufLock */
#define ssl_Get1stHandshakeLock(ss) \
{ if (!ss->opt.noLocks) { \
PORT_Assert(PZ_InMonitor((ss)->firstHandshakeLock) || \
!ssl_HaveRecvBufLock(ss)); \
PZ_EnterMonitor((ss)->firstHandshakeLock); \
} }
#define ssl_Release1stHandshakeLock(ss) \
{ if (!ss->opt.noLocks) PZ_ExitMonitor((ss)->firstHandshakeLock); }
#define ssl_Have1stHandshakeLock(ss) \
(PZ_InMonitor((ss)->firstHandshakeLock))
/* ssl3HandshakeLock -> xmitBufLock */
#define ssl_GetSSL3HandshakeLock(ss) \
{ if (!ss->opt.noLocks) { \
PORT_Assert(!ssl_HaveXmitBufLock(ss)); \
PZ_EnterMonitor((ss)->ssl3HandshakeLock); \
} }
#define ssl_ReleaseSSL3HandshakeLock(ss) \
{ if (!ss->opt.noLocks) PZ_ExitMonitor((ss)->ssl3HandshakeLock); }
#define ssl_HaveSSL3HandshakeLock(ss) \
(PZ_InMonitor((ss)->ssl3HandshakeLock))
#define ssl_GetSpecReadLock(ss) \
{ if (!ss->opt.noLocks) NSSRWLock_LockRead((ss)->specLock); }
#define ssl_ReleaseSpecReadLock(ss) \
{ if (!ss->opt.noLocks) NSSRWLock_UnlockRead((ss)->specLock); }
/* NSSRWLock_HaveReadLock is not exported so there's no
* ssl_HaveSpecReadLock macro. */
#define ssl_GetSpecWriteLock(ss) \
{ if (!ss->opt.noLocks) NSSRWLock_LockWrite((ss)->specLock); }
#define ssl_ReleaseSpecWriteLock(ss) \
{ if (!ss->opt.noLocks) NSSRWLock_UnlockWrite((ss)->specLock); }
#define ssl_HaveSpecWriteLock(ss) \
(NSSRWLock_HaveWriteLock((ss)->specLock))
/* recvBufLock -> ssl3HandshakeLock -> xmitBufLock */
#define ssl_GetRecvBufLock(ss) \
{ if (!ss->opt.noLocks) { \
PORT_Assert(!ssl_HaveSSL3HandshakeLock(ss)); \
PORT_Assert(!ssl_HaveXmitBufLock(ss)); \
PZ_EnterMonitor((ss)->recvBufLock); \
} }
#define ssl_ReleaseRecvBufLock(ss) \
{ if (!ss->opt.noLocks) PZ_ExitMonitor( (ss)->recvBufLock); }
#define ssl_HaveRecvBufLock(ss) \
(PZ_InMonitor((ss)->recvBufLock))
/* xmitBufLock -> specLock */
#define ssl_GetXmitBufLock(ss) \
{ if (!ss->opt.noLocks) PZ_EnterMonitor((ss)->xmitBufLock); }
#define ssl_ReleaseXmitBufLock(ss) \
{ if (!ss->opt.noLocks) PZ_ExitMonitor( (ss)->xmitBufLock); }
#define ssl_HaveXmitBufLock(ss) \
(PZ_InMonitor((ss)->xmitBufLock))
/* Placeholder value used in version ranges when SSL 3.0 and all
* versions of TLS are disabled.
*/
#define SSL_LIBRARY_VERSION_NONE 0
/* SSL_LIBRARY_VERSION_MAX_SUPPORTED is the maximum version that this version
* of libssl supports. Applications should use SSL_VersionRangeGetSupported at
* runtime to determine which versions are supported by the version of libssl
* in use.
*/
#define SSL_LIBRARY_VERSION_MAX_SUPPORTED SSL_LIBRARY_VERSION_TLS_1_2
/* Rename this macro SSL_ALL_VERSIONS_DISABLED when SSL 2.0 is removed. */
#define SSL3_ALL_VERSIONS_DISABLED(vrange) \
((vrange)->min == SSL_LIBRARY_VERSION_NONE)
extern PRBool ssl3_VersionIsSupported(SSLProtocolVariant protocolVariant,
SSL3ProtocolVersion version);
extern SECStatus ssl3_KeyAndMacDeriveBypass(ssl3CipherSpec * pwSpec,
const unsigned char * cr, const unsigned char * sr,
PRBool isTLS, PRBool isExport);
extern SECStatus ssl3_MasterKeyDeriveBypass( ssl3CipherSpec * pwSpec,
const unsigned char * cr, const unsigned char * sr,
const SECItem * pms, PRBool isTLS, PRBool isRSA);
/* These functions are called from secnav, even though they're "private". */
extern int ssl2_SendErrorMessage(struct sslSocketStr *ss, int error);
extern int SSL_RestartHandshakeAfterCertReq(struct sslSocketStr *ss,
CERTCertificate *cert,
SECKEYPrivateKey *key,
CERTCertificateList *certChain);
extern sslSocket *ssl_FindSocket(PRFileDesc *fd);
extern void ssl_FreeSocket(struct sslSocketStr *ssl);
extern SECStatus SSL3_SendAlert(sslSocket *ss, SSL3AlertLevel level,
SSL3AlertDescription desc);
extern SECStatus ssl3_DecodeError(sslSocket *ss);
extern SECStatus ssl3_AuthCertificateComplete(sslSocket *ss, PRErrorCode error);
/*
* for dealing with SSL 3.0 clients sending SSL 2.0 format hellos
*/
extern SECStatus ssl3_HandleV2ClientHello(
sslSocket *ss, unsigned char *buffer, int length);
extern SECStatus ssl3_StartHandshakeHash(
sslSocket *ss, unsigned char *buf, int length);
/*
* SSL3 specific routines
*/
SECStatus ssl3_SendClientHello(sslSocket *ss, PRBool resending);
/*
* input into the SSL3 machinery from the actualy network reading code
*/
SECStatus ssl3_HandleRecord(
sslSocket *ss, SSL3Ciphertext *cipher, sslBuffer *out);
int ssl3_GatherAppDataRecord(sslSocket *ss, int flags);
int ssl3_GatherCompleteHandshake(sslSocket *ss, int flags);
/*
* When talking to export clients or using export cipher suites, servers
* with public RSA keys larger than 512 bits need to use a 512-bit public
* key, signed by the larger key. The smaller key is a "step down" key.
* Generate that key pair and keep it around.
*/
extern SECStatus ssl3_CreateRSAStepDownKeys(sslSocket *ss);
#ifndef NSS_DISABLE_ECC
extern void ssl3_FilterECCipherSuitesByServerCerts(sslSocket *ss);
extern PRBool ssl3_IsECCEnabled(sslSocket *ss);
extern SECStatus ssl3_DisableECCSuites(sslSocket * ss,
const ssl3CipherSuite * suite);
extern PRUint32 ssl3_GetSupportedECCurveMask(sslSocket *ss);
/* Macro for finding a curve equivalent in strength to RSA key's */
#define SSL_RSASTRENGTH_TO_ECSTRENGTH(s) \
((s <= 1024) ? 160 \
: ((s <= 2048) ? 224 \
: ((s <= 3072) ? 256 \
: ((s <= 7168) ? 384 : 521 ) ) ) )
/* Types and names of elliptic curves used in TLS */
typedef enum { ec_type_explicitPrime = 1,
ec_type_explicitChar2Curve = 2,
ec_type_named
} ECType;
typedef enum { ec_noName = 0,
ec_sect163k1 = 1,
ec_sect163r1 = 2,
ec_sect163r2 = 3,
ec_sect193r1 = 4,
ec_sect193r2 = 5,
ec_sect233k1 = 6,
ec_sect233r1 = 7,
ec_sect239k1 = 8,
ec_sect283k1 = 9,
ec_sect283r1 = 10,
ec_sect409k1 = 11,
ec_sect409r1 = 12,
ec_sect571k1 = 13,
ec_sect571r1 = 14,
ec_secp160k1 = 15,
ec_secp160r1 = 16,
ec_secp160r2 = 17,
ec_secp192k1 = 18,
ec_secp192r1 = 19,
ec_secp224k1 = 20,
ec_secp224r1 = 21,
ec_secp256k1 = 22,
ec_secp256r1 = 23,
ec_secp384r1 = 24,
ec_secp521r1 = 25,
ec_pastLastName
} ECName;
extern SECStatus ssl3_ECName2Params(PLArenaPool *arena, ECName curve,
SECKEYECParams *params);
ECName ssl3_GetCurveWithECKeyStrength(PRUint32 curvemsk, int requiredECCbits);
#endif /* NSS_DISABLE_ECC */
extern SECStatus ssl3_CipherPrefSetDefault(ssl3CipherSuite which, PRBool on);
extern SECStatus ssl3_CipherPrefGetDefault(ssl3CipherSuite which, PRBool *on);
extern SECStatus ssl2_CipherPrefSetDefault(PRInt32 which, PRBool enabled);
extern SECStatus ssl2_CipherPrefGetDefault(PRInt32 which, PRBool *enabled);
extern SECStatus ssl3_CipherPrefSet(sslSocket *ss, ssl3CipherSuite which, PRBool on);
extern SECStatus ssl3_CipherPrefGet(sslSocket *ss, ssl3CipherSuite which, PRBool *on);
extern SECStatus ssl2_CipherPrefSet(sslSocket *ss, PRInt32 which, PRBool enabled);
extern SECStatus ssl2_CipherPrefGet(sslSocket *ss, PRInt32 which, PRBool *enabled);
extern SECStatus ssl3_SetPolicy(ssl3CipherSuite which, PRInt32 policy);
extern SECStatus ssl3_GetPolicy(ssl3CipherSuite which, PRInt32 *policy);
extern SECStatus ssl2_SetPolicy(PRInt32 which, PRInt32 policy);
extern SECStatus ssl2_GetPolicy(PRInt32 which, PRInt32 *policy);
extern void ssl2_InitSocketPolicy(sslSocket *ss);
extern void ssl3_InitSocketPolicy(sslSocket *ss);
extern SECStatus ssl3_ConstructV2CipherSpecsHack(sslSocket *ss,
unsigned char *cs, int *size);
extern SECStatus ssl3_RedoHandshake(sslSocket *ss, PRBool flushCache);
extern SECStatus ssl3_HandleHandshakeMessage(sslSocket *ss, SSL3Opaque *b,
PRUint32 length);
extern void ssl3_DestroySSL3Info(sslSocket *ss);
extern SECStatus ssl3_NegotiateVersion(sslSocket *ss,
SSL3ProtocolVersion peerVersion,
PRBool allowLargerPeerVersion);
extern SECStatus ssl_GetPeerInfo(sslSocket *ss);
#ifndef NSS_DISABLE_ECC
/* ECDH functions */
extern SECStatus ssl3_SendECDHClientKeyExchange(sslSocket * ss,
SECKEYPublicKey * svrPubKey);
extern SECStatus ssl3_HandleECDHServerKeyExchange(sslSocket *ss,
SSL3Opaque *b, PRUint32 length);
extern SECStatus ssl3_HandleECDHClientKeyExchange(sslSocket *ss,
SSL3Opaque *b, PRUint32 length,
SECKEYPublicKey *srvrPubKey,
SECKEYPrivateKey *srvrPrivKey);
extern SECStatus ssl3_SendECDHServerKeyExchange(sslSocket *ss,
const SSL3SignatureAndHashAlgorithm *sigAndHash);
#endif
extern SECStatus ssl3_ComputeCommonKeyHash(SECOidTag hashAlg,
PRUint8 * hashBuf,
unsigned int bufLen, SSL3Hashes *hashes,
PRBool bypassPKCS11);
extern void ssl3_DestroyCipherSpec(ssl3CipherSpec *spec, PRBool freeSrvName);
extern SECStatus ssl3_InitPendingCipherSpec(sslSocket *ss, PK11SymKey *pms);
extern SECStatus ssl3_AppendHandshake(sslSocket *ss, const void *void_src,
PRInt32 bytes);
extern SECStatus ssl3_AppendHandshakeHeader(sslSocket *ss,
SSL3HandshakeType t, PRUint32 length);
extern SECStatus ssl3_AppendHandshakeNumber(sslSocket *ss, PRInt32 num,
PRInt32 lenSize);
extern SECStatus ssl3_AppendHandshakeVariable( sslSocket *ss,
const SSL3Opaque *src, PRInt32 bytes, PRInt32 lenSize);
extern SECStatus ssl3_AppendSignatureAndHashAlgorithm(sslSocket *ss,
const SSL3SignatureAndHashAlgorithm* sigAndHash);
extern SECStatus ssl3_ConsumeHandshake(sslSocket *ss, void *v, PRInt32 bytes,
SSL3Opaque **b, PRUint32 *length);
extern PRInt32 ssl3_ConsumeHandshakeNumber(sslSocket *ss, PRInt32 bytes,
SSL3Opaque **b, PRUint32 *length);
extern SECStatus ssl3_ConsumeHandshakeVariable(sslSocket *ss, SECItem *i,
PRInt32 bytes, SSL3Opaque **b, PRUint32 *length);
extern SECOidTag ssl3_TLSHashAlgorithmToOID(int hashFunc);
extern SECStatus ssl3_CheckSignatureAndHashAlgorithmConsistency(
const SSL3SignatureAndHashAlgorithm *sigAndHash,
CERTCertificate* cert);
extern SECStatus ssl3_ConsumeSignatureAndHashAlgorithm(sslSocket *ss,
SSL3Opaque **b, PRUint32 *length,
SSL3SignatureAndHashAlgorithm *out);
extern SECStatus ssl3_SignHashes(SSL3Hashes *hash, SECKEYPrivateKey *key,
SECItem *buf, PRBool isTLS);
extern SECStatus ssl3_VerifySignedHashes(SSL3Hashes *hash,
CERTCertificate *cert, SECItem *buf, PRBool isTLS,
void *pwArg);
extern SECStatus ssl3_CacheWrappedMasterSecret(sslSocket *ss,
sslSessionID *sid, ssl3CipherSpec *spec,
SSL3KEAType effectiveExchKeyType);
/* Functions that handle ClientHello and ServerHello extensions. */
extern SECStatus ssl3_HandleServerNameXtn(sslSocket * ss,
PRUint16 ex_type, SECItem *data);
extern SECStatus ssl3_HandleSupportedCurvesXtn(sslSocket * ss,
PRUint16 ex_type, SECItem *data);
extern SECStatus ssl3_HandleSupportedPointFormatsXtn(sslSocket * ss,
PRUint16 ex_type, SECItem *data);
extern SECStatus ssl3_ClientHandleSessionTicketXtn(sslSocket *ss,
PRUint16 ex_type, SECItem *data);
extern SECStatus ssl3_ServerHandleSessionTicketXtn(sslSocket *ss,
PRUint16 ex_type, SECItem *data);
/* ClientHello and ServerHello extension senders.
* Note that not all extension senders are exposed here; only those that
* that need exposure.
*/
extern PRInt32 ssl3_SendSessionTicketXtn(sslSocket *ss, PRBool append,
PRUint32 maxBytes);
/* ClientHello and ServerHello extension senders.
* The code is in ssl3ext.c.
*/
extern PRInt32 ssl3_SendServerNameXtn(sslSocket *ss, PRBool append,
PRUint32 maxBytes);
/* Assigns new cert, cert chain and keys to ss->serverCerts
* struct. If certChain is NULL, tries to find one. Aborts if
* fails to do so. If cert and keyPair are NULL - unconfigures
* sslSocket of kea type.*/
extern SECStatus ssl_ConfigSecureServer(sslSocket *ss, CERTCertificate *cert,
const CERTCertificateList *certChain,
ssl3KeyPair *keyPair, SSLKEAType kea);
#ifndef NSS_DISABLE_ECC
extern PRInt32 ssl3_SendSupportedCurvesXtn(sslSocket *ss,
PRBool append, PRUint32 maxBytes);
extern PRInt32 ssl3_SendSupportedPointFormatsXtn(sslSocket *ss,
PRBool append, PRUint32 maxBytes);
#endif
/* call the registered extension handlers. */
extern SECStatus ssl3_HandleHelloExtensions(sslSocket *ss,
SSL3Opaque **b, PRUint32 *length);
/* Hello Extension related routines. */
extern PRBool ssl3_ExtensionNegotiated(sslSocket *ss, PRUint16 ex_type);
extern void ssl3_SetSIDSessionTicket(sslSessionID *sid,
/*in/out*/ NewSessionTicket *session_ticket);
extern SECStatus ssl3_SendNewSessionTicket(sslSocket *ss);
extern PRBool ssl_GetSessionTicketKeys(unsigned char *keyName,
unsigned char *encKey, unsigned char *macKey);
extern PRBool ssl_GetSessionTicketKeysPKCS11(SECKEYPrivateKey *svrPrivKey,
SECKEYPublicKey *svrPubKey, void *pwArg,
unsigned char *keyName, PK11SymKey **aesKey,
PK11SymKey **macKey);
/* Tell clients to consider tickets valid for this long. */
#define TLS_EX_SESS_TICKET_LIFETIME_HINT (2 * 24 * 60 * 60) /* 2 days */
#define TLS_EX_SESS_TICKET_VERSION (0x0100)
extern SECStatus ssl3_ValidateNextProtoNego(const unsigned char* data,
unsigned int length);
/* Construct a new NSPR socket for the app to use */
extern PRFileDesc *ssl_NewPRSocket(sslSocket *ss, PRFileDesc *fd);
extern void ssl_FreePRSocket(PRFileDesc *fd);
/* Internal config function so SSL3 can initialize the present state of
* various ciphers */
extern int ssl3_config_match_init(sslSocket *);
/* Create a new ref counted key pair object from two keys. */
extern ssl3KeyPair * ssl3_NewKeyPair( SECKEYPrivateKey * privKey,
SECKEYPublicKey * pubKey);
/* get a new reference (bump ref count) to an ssl3KeyPair. */
extern ssl3KeyPair * ssl3_GetKeyPairRef(ssl3KeyPair * keyPair);
/* Decrement keypair's ref count and free if zero. */
extern void ssl3_FreeKeyPair(ssl3KeyPair * keyPair);
/* calls for accessing wrapping keys across processes. */
extern PRBool
ssl_GetWrappingKey( PRInt32 symWrapMechIndex,
SSL3KEAType exchKeyType,
SSLWrappedSymWrappingKey *wswk);
/* The caller passes in the new value it wants
* to set. This code tests the wrapped sym key entry in the file on disk.
* If it is uninitialized, this function writes the caller's value into
* the disk entry, and returns false.
* Otherwise, it overwrites the caller's wswk with the value obtained from
* the disk, and returns PR_TRUE.
* This is all done while holding the locks/semaphores necessary to make
* the operation atomic.
*/
extern PRBool
ssl_SetWrappingKey(SSLWrappedSymWrappingKey *wswk);
/* get rid of the symmetric wrapping key references. */
extern SECStatus SSL3_ShutdownServerCache(void);
extern SECStatus ssl_InitSymWrapKeysLock(void);
extern SECStatus ssl_FreeSymWrapKeysLock(void);
extern SECStatus ssl_InitSessionCacheLocks(PRBool lazyInit);
extern SECStatus ssl_FreeSessionCacheLocks(void);
/**************** DTLS-specific functions **************/
extern void dtls_FreeQueuedMessage(DTLSQueuedMessage *msg);
extern void dtls_FreeQueuedMessages(PRCList *lst);
extern void dtls_FreeHandshakeMessages(PRCList *lst);
extern SECStatus dtls_HandleHandshake(sslSocket *ss, sslBuffer *origBuf);
extern SECStatus dtls_HandleHelloVerifyRequest(sslSocket *ss,
SSL3Opaque *b, PRUint32 length);
extern SECStatus dtls_StageHandshakeMessage(sslSocket *ss);
extern SECStatus dtls_QueueMessage(sslSocket *ss, SSL3ContentType type,
const SSL3Opaque *pIn, PRInt32 nIn);
extern SECStatus dtls_FlushHandshakeMessages(sslSocket *ss, PRInt32 flags);
extern SECStatus dtls_CompressMACEncryptRecord(sslSocket *ss,
DTLSEpoch epoch,
PRBool use_epoch,
SSL3ContentType type,
const SSL3Opaque *pIn,
PRUint32 contentLen,
sslBuffer *wrBuf);
SECStatus ssl3_DisableNonDTLSSuites(sslSocket * ss);
extern SECStatus dtls_StartTimer(sslSocket *ss, DTLSTimerCb cb);
extern SECStatus dtls_RestartTimer(sslSocket *ss, PRBool backoff,
DTLSTimerCb cb);
extern void dtls_CheckTimer(sslSocket *ss);
extern void dtls_CancelTimer(sslSocket *ss);
extern void dtls_FinishedTimerCb(sslSocket *ss);
extern void dtls_SetMTU(sslSocket *ss, PRUint16 advertised);
extern void dtls_InitRecvdRecords(DTLSRecvdRecords *records);
extern int dtls_RecordGetRecvd(DTLSRecvdRecords *records, PRUint64 seq);
extern void dtls_RecordSetRecvd(DTLSRecvdRecords *records, PRUint64 seq);
extern void dtls_RehandshakeCleanup(sslSocket *ss);
extern SSL3ProtocolVersion
dtls_TLSVersionToDTLSVersion(SSL3ProtocolVersion tlsv);
extern SSL3ProtocolVersion
dtls_DTLSVersionToTLSVersion(SSL3ProtocolVersion dtlsv);
/********************** misc calls *********************/
#ifdef DEBUG
extern void ssl3_CheckCipherSuiteOrderConsistency();
#endif
extern int ssl_MapLowLevelError(int hiLevelError);
extern PRUint32 ssl_Time(void);
extern void SSL_AtomicIncrementLong(long * x);
SECStatus SSL_DisableDefaultExportCipherSuites(void);
SECStatus SSL_DisableExportCipherSuites(PRFileDesc * fd);
PRBool SSL_IsExportCipherSuite(PRUint16 cipherSuite);
extern SECStatus
ssl3_TLSPRFWithMasterSecret(ssl3CipherSpec *spec,
const char *label, unsigned int labelLen,
const unsigned char *val, unsigned int valLen,
unsigned char *out, unsigned int outLen);
#ifdef TRACE
#define SSL_TRACE(msg) ssl_Trace msg
#else
#define SSL_TRACE(msg)
#endif
void ssl_Trace(const char *format, ...);
SEC_END_PROTOS
#if defined(XP_UNIX) || defined(XP_OS2) || defined(XP_BEOS)
#define SSL_GETPID getpid
#elif defined(WIN32)
extern int __cdecl _getpid(void);
#define SSL_GETPID _getpid
#else
#define SSL_GETPID() 0
#endif
#endif /* __sslimpl_h_ */
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