ssl.h
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上传日期:2007-01-12
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- /*
- * This file contains prototypes for the public SSL functions.
- *
- * The contents of this file are subject to the Mozilla Public
- * License Version 1.1 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of
- * the License at http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS
- * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
- * implied. See the License for the specific language governing
- * rights and limitations under the License.
- *
- * The Original Code is the Netscape security libraries.
- *
- * The Initial Developer of the Original Code is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1994-2000 Netscape Communications Corporation. All
- * Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL"), in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your
- * version of this file only under the terms of the GPL and not to
- * allow others to use your version of this file under the MPL,
- * indicate your decision by deleting the provisions above and
- * replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient
- * may use your version of this file under either the MPL or the
- * GPL.
- *
- * $Id: ssl.h,v 1.2 2000/05/24 03:31:44 nelsonb%netscape.com Exp $
- */
- #ifndef __ssl_h_
- #define __ssl_h_
- #include "prtypes.h"
- #include "prerror.h"
- #include "prio.h"
- #include "seccomon.h"
- #include "cert.h"
- #include "keyt.h"
- /* constant table enumerating all implemented SSL 2 and 3 cipher suites. */
- extern const PRUint16 SSL_ImplementedCiphers[];
- /* number of entries in the above table. */
- extern const PRUint16 SSL_NumImplementedCiphers;
- /* Macro to tell which ciphers in table are SSL2 vs SSL3/TLS. */
- #define SSL_IS_SSL2_CIPHER(which) (((which) & 0xfff0) == 0xff00)
- SEC_BEGIN_PROTOS
- /*
- ** Imports fd into SSL, returning a new socket. Copies SSL configuration
- ** from model.
- */
- extern PRFileDesc *SSL_ImportFD(PRFileDesc *model, PRFileDesc *fd);
- /*
- ** Enable/disable an ssl mode
- **
- ** SSL_SECURITY:
- ** enable/disable use of SSL security protocol before connect
- **
- ** SSL_SOCKS:
- ** enable/disable use of socks before connect
- ** (No longer supported).
- **
- ** SSL_REQUEST_CERTIFICATE:
- ** require a certificate during secure connect
- */
- /* options */
- #define SSL_SECURITY 1
- #define SSL_SOCKS 2
- #define SSL_REQUEST_CERTIFICATE 3
- #define SSL_HANDSHAKE_AS_CLIENT 5 /* force accept to hs as client */
- #define SSL_HANDSHAKE_AS_SERVER 6 /* force connect to hs as server */
- #define SSL_ENABLE_SSL2 7 /* enable ssl v2 (on by default) */
- #define SSL_ENABLE_SSL3 8 /* enable ssl v3 (on by default) */
- #define SSL_NO_CACHE 9 /* don't use the session cache */
- #define SSL_REQUIRE_CERTIFICATE 10
- #define SSL_ENABLE_FDX 11 /* permit simultaneous read/write */
- #define SSL_V2_COMPATIBLE_HELLO 12 /* send v3 client hello in v2 fmt */
- #define SSL_ENABLE_TLS 13 /* enable TLS (off by default) */
- #define SSL_ROLLBACK_DETECTION 14 /* for compatibility, default: on */
- /* Old deprecated function names */
- extern SECStatus SSL_Enable(PRFileDesc *fd, int option, PRBool on);
- extern SECStatus SSL_EnableDefault(int option, PRBool on);
- /* New function names */
- extern SECStatus SSL_OptionSet(PRFileDesc *fd, PRInt32 option, PRBool on);
- extern SECStatus SSL_OptionGet(PRFileDesc *fd, PRInt32 option, PRBool *on);
- extern SECStatus SSL_OptionSetDefault(PRInt32 option, PRBool on);
- extern SECStatus SSL_OptionGetDefault(PRInt32 option, PRBool *on);
- extern SECStatus SSL_CertDBHandleSet(PRFileDesc *fd, CERTCertDBHandle *dbHandle);
- /*
- ** Control ciphers that SSL uses. If on is non-zero then the named cipher
- ** is enabled, otherwise it is disabled.
- ** The "cipher" values are defined in sslproto.h (the SSL_EN_* values).
- ** EnableCipher records user preferences.
- ** SetPolicy sets the policy according to the policy module.
- */
- /* Old deprecated function names */
- extern SECStatus SSL_EnableCipher(long which, PRBool enabled);
- extern SECStatus SSL_SetPolicy(long which, int policy);
- /* New function names */
- extern SECStatus SSL_CipherPrefSet(PRFileDesc *fd, PRInt32 cipher, PRBool enabled);
- extern SECStatus SSL_CipherPrefGet(PRFileDesc *fd, PRInt32 cipher, PRBool *enabled);
- extern SECStatus SSL_CipherPrefSetDefault(PRInt32 cipher, PRBool enabled);
- extern SECStatus SSL_CipherPrefGetDefault(PRInt32 cipher, PRBool *enabled);
- extern SECStatus SSL_CipherPolicySet(PRInt32 cipher, PRInt32 policy);
- extern SECStatus SSL_CipherPolicyGet(PRInt32 cipher, PRInt32 *policy);
- /* Values for "policy" argument to SSL_PolicySet */
- /* Values returned by SSL_CipherPolicyGet. */
- #define SSL_NOT_ALLOWED 0 /* or invalid or unimplemented */
- #define SSL_ALLOWED 1
- #define SSL_RESTRICTED 2 /* only with "Step-Up" certs. */
- /*
- ** Reset the handshake state for fd. This will make the complete SSL
- ** handshake protocol execute from the ground up on the next i/o
- ** operation.
- */
- extern SECStatus SSL_ResetHandshake(PRFileDesc *fd, PRBool asServer);
- /*
- ** Force the handshake for fd to complete immediately. This blocks until
- ** the complete SSL handshake protocol is finished.
- */
- extern int SSL_ForceHandshake(PRFileDesc *fd);
- /*
- ** Query security status of socket. *on is set to one if security is
- ** enabled. *keySize will contain the stream key size used. *issuer will
- ** contain the RFC1485 verison of the name of the issuer of the
- ** certificate at the other end of the connection. For a client, this is
- ** the issuer of the server's certificate; for a server, this is the
- ** issuer of the client's certificate (if any). Subject is the subject of
- ** the other end's certificate. The pointers can be zero if the desired
- ** data is not needed. All strings returned by this function are owned
- ** by SSL, and will be freed when the socket is closed.
- */
- extern int SSL_SecurityStatus(PRFileDesc *fd, int *on, char **cipher,
- int *keySize, int *secretKeySize,
- char **issuer, char **subject);
- /* Values for "on" */
- #define SSL_SECURITY_STATUS_NOOPT -1
- #define SSL_SECURITY_STATUS_OFF 0
- #define SSL_SECURITY_STATUS_ON_HIGH 1
- #define SSL_SECURITY_STATUS_ON_LOW 2
- #define SSL_SECURITY_STATUS_FORTEZZA 3
- /*
- ** Return the certificate for our SSL peer. If the client calls this
- ** it will always return the server's certificate. If the server calls
- ** this, it may return NULL if client authentication is not enabled or
- ** if the client had no certificate when asked.
- ** "fd" the socket "file" descriptor
- */
- extern CERTCertificate *SSL_PeerCertificate(PRFileDesc *fd);
- /*
- ** Authenticate certificate hook. Called when a certificate comes in
- ** (because of SSL_REQUIRE_CERTIFICATE in SSL_Enable) to authenticate the
- ** certificate.
- */
- typedef int (*SSLAuthCertificate)(void *arg, PRFileDesc *fd, PRBool checkSig,
- PRBool isServer);
- extern int SSL_AuthCertificateHook(PRFileDesc *fd, SSLAuthCertificate f,
- void *arg);
- /* An implementation of the certificate authentication hook */
- extern int SSL_AuthCertificate(void *arg, PRFileDesc *fd, PRBool checkSig,
- PRBool isServer);
- /*
- * Prototype for SSL callback to get client auth data from the application.
- * arg - application passed argument
- * caNames - pointer to distinguished names of CAs that the server likes
- * pRetCert - pointer to pointer to cert, for return of cert
- * pRetKey - pointer to key pointer, for return of key
- */
- typedef int (*SSLGetClientAuthData)(void *arg, PRFileDesc *fd,
- CERTDistNames *caNames,
- CERTCertificate **pRetCert,/*return */
- SECKEYPrivateKey **pRetKey);/* return */
- /*
- * Set the client side callback for SSL to retrieve user's private key
- * and certificate.
- * fd - the file descriptor for the connection in question
- * f - the application's callback that delivers the key and cert
- * a - application specific data
- */
- extern int SSL_GetClientAuthDataHook(PRFileDesc *fd, SSLGetClientAuthData f,
- void *a);
- /*
- * Set the client side argument for SSL to retrieve PKCS #11 pin.
- * fd - the file descriptor for the connection in question
- * a - pkcs11 application specific data
- */
- extern int SSL_SetPKCS11PinArg(PRFileDesc *fd, void *a);
- /*
- ** This is a callback for dealing with server certs that are not authenticated
- ** by the client. The client app can decide that it actually likes the
- ** cert by some external means and restart the connection.
- */
- typedef int (*SSLBadCertHandler)(void *arg, PRFileDesc *fd);
- extern int SSL_BadCertHook(PRFileDesc *fd, SSLBadCertHandler f, void *arg);
- /*
- ** Configure ssl for running a secure server. Needs the
- ** certificate for the server and the servers private key. The arguments
- ** are copied.
- */
- /* Key Exchange values */
- typedef enum {
- kt_null = 0,
- kt_rsa,
- kt_dh,
- kt_fortezza,
- kt_kea_size
- } SSLKEAType;
- extern SECStatus SSL_ConfigSecureServer(PRFileDesc *fd, CERTCertificate *cert,
- SECKEYPrivateKey *key, SSLKEAType kea);
- /*
- ** Configure a secure servers session-id cache. Define the maximum number
- ** of entries in the cache, the longevity of the entires, and the directory
- ** where the cache files will be placed. These values can be zero, and
- ** if so, the implementation will choose defaults.
- ** This version of the function is for use in applications that have only one
- ** process that uses the cache (even if that process has multiple threads).
- */
- extern int SSL_ConfigServerSessionIDCache(int maxCacheEntries,
- PRUint32 timeout,
- PRUint32 ssl3_timeout,
- const char * directory);
- /*
- ** Like SSL_ConfigServerSessionIDCache, with one important difference.
- ** If the application will run multiple processes (as opposed to, or in
- ** addition to multiple threads), then it must call this function, instead
- ** of calling SSL_ConfigServerSessionIDCache().
- ** This has nothing to do with the number of processORs, only processEs.
- ** This function sets up a Server Session ID (SID) cache that is safe for
- ** access by multiple processes on the same system.
- */
- extern int SSL_ConfigMPServerSIDCache(int maxCacheEntries,
- PRUint32 timeout,
- PRUint32 ssl3_timeout,
- const char * directory);
- /* environment variable set by SSL_ConfigMPServerSIDCache, and queried by
- * SSL_InheritMPServerSIDCache when envString is NULL.
- */
- #define SSL_ENV_VAR_NAME "SSL_INHERITANCE"
- /* called in child to inherit SID Cache variables.
- * If envString is NULL, this function will use the value of the environment
- * variable "SSL_INHERITANCE", otherwise the string value passed in will be
- * used.
- */
- extern SECStatus SSL_InheritMPServerSIDCache(const char * envString);
- /*
- ** Set the callback on a particular socket that gets called when we finish
- ** performing a handshake.
- */
- typedef void (*SSLHandshakeCallback)(PRFileDesc *fd, void *client_data);
- extern int SSL_HandshakeCallback(PRFileDesc *fd, SSLHandshakeCallback cb,
- void *client_data);
- /*
- ** For the server, request a new handshake. For the client, begin a new
- ** handshake. If flushCache is non-zero, the SSL3 cache entry will be
- ** flushed first, ensuring that a full SSL handshake will be done.
- ** If flushCache is zero, and an SSL connection is established, it will
- ** do the much faster session restart handshake. This will change the
- ** session keys without doing another private key operation.
- */
- extern int SSL_ReHandshake(PRFileDesc *fd, PRBool flushCache);
- /*
- ** For the server, request a new handshake. For the client, begin a new
- ** handshake. Flushes SSL3 session cache entry first, ensuring that a
- ** full handshake will be done.
- ** This call is equivalent to SSL_ReHandshake(fd, PR_TRUE)
- */
- extern int SSL_RedoHandshake(PRFileDesc *fd);
- /*
- ** Return 1 if the socket is direct, 0 if not, -1 on error
- */
- extern int SSL_CheckDirectSock(PRFileDesc *s);
- /*
- ** A cousin to SSL_Bind, this takes an extra arg: dsthost, so we can
- ** set up sockd connection. This should be used with socks enabled.
- */
- extern int SSL_BindForSockd(PRFileDesc *s, PRNetAddr *sa, long dsthost);
- /*
- ** Configure ssl for using socks.
- */
- extern SECStatus SSL_ConfigSockd(PRFileDesc *fd, PRUint32 host, PRUint16 port);
- /*
- * Allow the application to pass a URL or hostname into the SSL library
- */
- extern int SSL_SetURL(PRFileDesc *fd, const char *url);
- /*
- ** Return the number of bytes that SSL has waiting in internal buffers.
- ** Return 0 if security is not enabled.
- */
- extern int SSL_DataPending(PRFileDesc *fd);
- /*
- ** Invalidate the SSL session associated with fd.
- */
- extern int SSL_InvalidateSession(PRFileDesc *fd);
- /*
- ** Return a SECItem containing the SSL session ID associated with the fd.
- */
- extern SECItem *SSL_GetSessionID(PRFileDesc *fd);
- /*
- ** Clear out the SSL session cache.
- */
- extern void SSL_ClearSessionCache(void);
- /*
- ** Set peer information so we can correctly look up SSL session later.
- ** You only have to do this if you're tunneling through a proxy.
- */
- extern int SSL_SetSockPeerID(PRFileDesc *fd, char *peerID);
- /*
- ** Read the socks config file. You must do this before doing anything with
- ** socks.
- */
- extern int SSL_ReadSocksConfFile(PRFileDesc *fp);
- /*
- ** Reveal the security information for the peer.
- */
- extern CERTCertificate * SSL_RevealCert(PRFileDesc * socket);
- extern void * SSL_RevealPinArg(PRFileDesc * socket);
- extern char * SSL_RevealURL(PRFileDesc * socket);
- /* This callback may be passed to the SSL library via a call to
- * SSL_GetClientAuthDataHook() for each SSL client socket.
- * It will be invoked when SSL needs to know what certificate and private key
- * (if any) to use to respond to a request for client authentication.
- * If arg is non-NULL, it is a pointer to a NULL-terminated string containing
- * the nickname of the cert/key pair to use.
- * If arg is NULL, this function will search the cert and key databases for
- * a suitable match and send it if one is found.
- */
- extern SECStatus
- NSS_GetClientAuthData(void * arg,
- PRFileDesc * socket,
- struct CERTDistNamesStr * caNames,
- struct CERTCertificateStr ** pRetCert,
- struct SECKEYPrivateKeyStr **pRetKey);
- /*
- * Look to see if any of the signers in the cert chain for "cert" are found
- * in the list of caNames.
- * Returns SECSuccess if so, SECFailure if not.
- * Used by NSS_GetClientAuthData. May be used by other callback functions.
- */
- extern SECStatus NSS_CmpCertChainWCANames(CERTCertificate *cert,
- CERTDistNames *caNames);
- /*
- * Returns key exchange type of the keys in an SSL server certificate.
- */
- extern SSLKEAType NSS_FindCertKEAType(CERTCertificate * cert);
- /* Set cipher policies to a predefined Domestic (U.S.A.) policy.
- * This essentially enables all supported ciphers.
- */
- extern SECStatus NSS_SetDomesticPolicy(void);
- /* Set cipher policies to a predefined Policy that is exportable from the USA
- * according to present U.S. policies as we understand them.
- * See documentation for the list.
- * Note that your particular application program may be able to obtain
- * an export license with more or fewer capabilities than those allowed
- * by this function. In that case, you should use SSL_SetPolicy()
- * to explicitly allow those ciphers you may legally export.
- */
- extern SECStatus NSS_SetExportPolicy(void);
- /* Set cipher policies to a predefined Policy that is exportable from the USA
- * according to present U.S. policies as we understand them, and that the
- * nation of France will permit to be imported into their country.
- * See documentation for the list.
- */
- extern SECStatus NSS_SetFrancePolicy(void);
- SEC_END_PROTOS
- #endif /* __ssl_h_ */