diff options
Diffstat (limited to 'camel/camel-tcp-stream-ssl.c')
| -rw-r--r-- | camel/camel-tcp-stream-ssl.c | 706 |
1 files changed, 0 insertions, 706 deletions
diff --git a/camel/camel-tcp-stream-ssl.c b/camel/camel-tcp-stream-ssl.c deleted file mode 100644 index a06fb93d1c..0000000000 --- a/camel/camel-tcp-stream-ssl.c +++ /dev/null @@ -1,706 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * Authors: Jeffrey Stedfast <fejj@ximian.com> - * - * Copyright 2001 Ximian, Inc. (www.ximian.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * - */ - -/* NOTE: This is the default implementation of CamelTcpStreamSSL, - * used when the Mozilla NSS libraries are used. If you configured - * OpenSSL support instead, then this file won't be compiled and - * the CamelTcpStreamSSL implementation in camel-tcp-stream-openssl.c - * will be used instead. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#ifdef HAVE_NSS -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <errno.h> -#include <string.h> - -#include <nspr.h> -#include <prio.h> -#include <prerror.h> -#include <prerr.h> -#include "nss.h" /* Don't use <> here or it will include the system nss.h instead */ -#include <ssl.h> -#include <cert.h> -#include <certdb.h> -#include <pk11func.h> - -/* this is commented because otherwise we get an error about the - redefinition of MD5Context...yay */ -/*#include <e-util/md5-utils.h>*/ - -#include "camel-tcp-stream-ssl.h" -#include "camel-session.h" - - -static CamelTcpStreamClass *parent_class = NULL; - -/* Returns the class for a CamelTcpStreamSSL */ -#define CTSS_CLASS(so) CAMEL_TCP_STREAM_SSL_CLASS (CAMEL_OBJECT_GET_CLASS (so)) - -static ssize_t stream_read (CamelStream *stream, char *buffer, size_t n); -static ssize_t stream_write (CamelStream *stream, const char *buffer, size_t n); -static int stream_flush (CamelStream *stream); -static int stream_close (CamelStream *stream); - -static PRFileDesc *enable_ssl (CamelTcpStreamSSL *ssl, PRFileDesc *fd); - -static int stream_connect (CamelTcpStream *stream, struct hostent *host, int port); -static int stream_getsockopt (CamelTcpStream *stream, CamelSockOptData *data); -static int stream_setsockopt (CamelTcpStream *stream, const CamelSockOptData *data); -static CamelTcpAddress *stream_get_local_address (CamelTcpStream *stream); -static CamelTcpAddress *stream_get_remote_address (CamelTcpStream *stream); - -struct _CamelTcpStreamSSLPrivate { - PRFileDesc *sockfd; - - CamelService *service; - char *expected_host; - gboolean ssl_mode; -}; - -static void -camel_tcp_stream_ssl_class_init (CamelTcpStreamSSLClass *camel_tcp_stream_ssl_class) -{ - CamelTcpStreamClass *camel_tcp_stream_class = - CAMEL_TCP_STREAM_CLASS (camel_tcp_stream_ssl_class); - CamelStreamClass *camel_stream_class = - CAMEL_STREAM_CLASS (camel_tcp_stream_ssl_class); - - parent_class = CAMEL_TCP_STREAM_CLASS (camel_type_get_global_classfuncs (camel_tcp_stream_get_type ())); - - /* virtual method overload */ - camel_stream_class->read = stream_read; - camel_stream_class->write = stream_write; - camel_stream_class->flush = stream_flush; - camel_stream_class->close = stream_close; - - camel_tcp_stream_class->connect = stream_connect; - camel_tcp_stream_class->getsockopt = stream_getsockopt; - camel_tcp_stream_class->setsockopt = stream_setsockopt; - camel_tcp_stream_class->get_local_address = stream_get_local_address; - camel_tcp_stream_class->get_remote_address = stream_get_remote_address; -} - -static void -camel_tcp_stream_ssl_init (gpointer object, gpointer klass) -{ - CamelTcpStreamSSL *stream = CAMEL_TCP_STREAM_SSL (object); - - stream->priv = g_new0 (struct _CamelTcpStreamSSLPrivate, 1); -} - -static void -camel_tcp_stream_ssl_finalize (CamelObject *object) -{ - CamelTcpStreamSSL *stream = CAMEL_TCP_STREAM_SSL (object); - - if (stream->priv->sockfd != NULL) - PR_Close (stream->priv->sockfd); - - g_free (stream->priv->expected_host); - - g_free (stream->priv); -} - - -CamelType -camel_tcp_stream_ssl_get_type (void) -{ - static CamelType type = CAMEL_INVALID_TYPE; - - if (type == CAMEL_INVALID_TYPE) { - type = camel_type_register (camel_tcp_stream_get_type (), - "CamelTcpStreamSSL", - sizeof (CamelTcpStreamSSL), - sizeof (CamelTcpStreamSSLClass), - (CamelObjectClassInitFunc) camel_tcp_stream_ssl_class_init, - NULL, - (CamelObjectInitFunc) camel_tcp_stream_ssl_init, - (CamelObjectFinalizeFunc) camel_tcp_stream_ssl_finalize); - } - - return type; -} - - -/** - * camel_tcp_stream_ssl_new: - * @service: camel service - * @expected_host: host that the stream is expected to connect with. - * - * Since the SSL certificate authenticator may need to prompt the - * user, a CamelService is needed. @expected_host is needed as a - * protection against an MITM attack. - * - * Return value: a ssl stream (in ssl mode) - **/ -CamelStream * -camel_tcp_stream_ssl_new (CamelService *service, const char *expected_host) -{ - CamelTcpStreamSSL *stream; - - stream = CAMEL_TCP_STREAM_SSL (camel_object_new (camel_tcp_stream_ssl_get_type ())); - - stream->priv->service = service; - stream->priv->expected_host = g_strdup (expected_host); - stream->priv->ssl_mode = TRUE; - - return CAMEL_STREAM (stream); -} - - -/** - * camel_tcp_stream_ssl_new_raw: - * @service: camel service - * @expected_host: host that the stream is expected to connect with. - * - * Since the SSL certificate authenticator may need to prompt the - * user, a CamelService is needed. @expected_host is needed as a - * protection against an MITM attack. - * - * Return value: a ssl-capable stream (in non ssl mode) - **/ -CamelStream * -camel_tcp_stream_ssl_new_raw (CamelService *service, const char *expected_host) -{ - CamelTcpStreamSSL *stream; - - stream = CAMEL_TCP_STREAM_SSL (camel_object_new (camel_tcp_stream_ssl_get_type ())); - - stream->priv->service = service; - stream->priv->expected_host = g_strdup (expected_host); - stream->priv->ssl_mode = FALSE; - - return CAMEL_STREAM (stream); -} - - -static void -set_errno (int code) -{ - /* FIXME: this should handle more. */ - switch (code) { - case PR_INVALID_ARGUMENT_ERROR: - errno = EINVAL; - break; - case PR_PENDING_INTERRUPT_ERROR: - errno = EINTR; - break; - case PR_IO_PENDING_ERROR: - case PR_IO_TIMEOUT_ERROR: - errno = EAGAIN; - break; - case PR_WOULD_BLOCK_ERROR: - errno = EWOULDBLOCK; - break; - case PR_IN_PROGRESS_ERROR: - errno = EINPROGRESS; - break; - case PR_ALREADY_INITIATED_ERROR: - errno = EALREADY; - break; - case PR_NETWORK_UNREACHABLE_ERROR: - errno = EHOSTUNREACH; - break; - case PR_CONNECT_REFUSED_ERROR: - errno = ECONNREFUSED; - break; - case PR_CONNECT_TIMEOUT_ERROR: - errno = ETIMEDOUT; - break; - case PR_NOT_CONNECTED_ERROR: - errno = ENOTCONN; - break; - case PR_CONNECT_RESET_ERROR: - errno = ECONNRESET; - break; - case PR_IO_ERROR: - default: - errno = EIO; - break; - } -} - - -/** - * camel_tcp_stream_ssl_enable_ssl: - * @ssl: ssl stream - * - * Toggles an ssl-capable stream into ssl mode (if it isn't already). - * - * Returns 0 on success or -1 on fail. - **/ -int -camel_tcp_stream_ssl_enable_ssl (CamelTcpStreamSSL *ssl) -{ - PRFileDesc *fd; - - g_return_val_if_fail (CAMEL_IS_TCP_STREAM_SSL (ssl), -1); - - if (ssl->priv->sockfd && !ssl->priv->ssl_mode) { - fd = enable_ssl (ssl, NULL); - if (fd == NULL) { - int errnosave; - - set_errno (PR_GetError ()); - errnosave = errno; - errno = errnosave; - - return -1; - } - - SSL_ResetHandshake (fd, FALSE); - - ssl->priv->sockfd = fd; - } - - ssl->priv->ssl_mode = TRUE; - - return 0; -} - - -static ssize_t -stream_read (CamelStream *stream, char *buffer, size_t n) -{ - CamelTcpStreamSSL *tcp_stream_ssl = CAMEL_TCP_STREAM_SSL (stream); - ssize_t nread; - - do { - if (camel_operation_cancel_check (NULL)) { - errno = EINTR; - return -1; - } - - nread = PR_Read (tcp_stream_ssl->priv->sockfd, buffer, n); - if (nread == -1) - set_errno (PR_GetError ()); - } while (nread == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)); - - return nread; -} - -static ssize_t -stream_write (CamelStream *stream, const char *buffer, size_t n) -{ - CamelTcpStreamSSL *tcp_stream_ssl = CAMEL_TCP_STREAM_SSL (stream); - ssize_t w, written = 0; - - do { - if (camel_operation_cancel_check (NULL)) { - errno = EINTR; - return -1; - } - - do { - w = PR_Write (tcp_stream_ssl->priv->sockfd, buffer + written, n - written); - if (w == -1) - set_errno (PR_GetError ()); - } while (w == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)); - - if (w > 0) - written += w; - } while (w != -1 && written < n); - - return written; -} - -static int -stream_flush (CamelStream *stream) -{ - return PR_Sync (((CamelTcpStreamSSL *)stream)->priv->sockfd); -} - -static int -stream_close (CamelStream *stream) -{ - if (PR_Close (((CamelTcpStreamSSL *)stream)->priv->sockfd) == PR_FAILURE) - return -1; - - ((CamelTcpStreamSSL *)stream)->priv->sockfd = NULL; - - return 0; -} - -#if 0 -/* Since this is default implementation, let NSS handle it. */ -static SECStatus -ssl_get_client_auth (void *data, PRFileDesc *sockfd, - struct CERTDistNamesStr *caNames, - struct CERTCertificateStr **pRetCert, - struct SECKEYPrivateKeyStr **pRetKey) -{ - SECStatus status = SECFailure; - SECKEYPrivateKey *privkey; - CERTCertificate *cert; - void *proto_win; - - proto_win = SSL_RevealPinArg (sockfd); - - if ((char *) data) { - cert = PK11_FindCertFromNickname ((char *) data, proto_win); - if (cert) { - privKey = PK11_FindKeyByAnyCert (cert, proto_win); - if (privkey) { - status = SECSuccess; - } else { - CERT_DestroyCertificate (cert); - } - } - } else { - /* no nickname given, automatically find the right cert */ - CERTCertNicknames *names; - int i; - - names = CERT_GetCertNicknames (CERT_GetDefaultCertDB (), - SEC_CERT_NICKNAMES_USER, - proto_win); - - if (names != NULL) { - for (i = 0; i < names->numnicknames; i++) { - cert = PK11_FindCertFromNickname (names->nicknames[i], - proto_win); - if (!cert) - continue; - - /* Only check unexpired certs */ - if (CERT_CheckCertValidTimes (cert, PR_Now (), PR_FALSE) != secCertTimeValid) { - CERT_DestroyCertificate (cert); - continue; - } - - status = NSS_CmpCertChainWCANames (cert, caNames); - if (status == SECSuccess) { - privkey = PK11_FindKeyByAnyCert (cert, proto_win); - if (privkey) - break; - - status = SECFailure; - break; - } - - CERT_FreeNicknames (names); - } - } - } - - if (status == SECSuccess) { - *pRetCert = cert; - *pRetKey = privkey; - } - - return status; -} -#endif - -#if 0 -/* Since this is the default NSS implementation, no need for us to use this. */ -static SECStatus -ssl_auth_cert (void *data, PRFileDesc *sockfd, PRBool checksig, PRBool is_server) -{ - CERTCertificate *cert; - SECStatus status; - void *pinarg; - char *host; - - cert = SSL_PeerCertificate (sockfd); - pinarg = SSL_RevealPinArg (sockfd); - status = CERT_VerifyCertNow ((CERTCertDBHandle *)data, cert, - checksig, certUsageSSLClient, pinarg); - - if (status != SECSuccess) - return SECFailure; - - /* Certificate is OK. Since this is the client side of an SSL - * connection, we need to verify that the name field in the cert - * matches the desired hostname. This is our defense against - * man-in-the-middle attacks. - */ - - /* SSL_RevealURL returns a hostname, not a URL. */ - host = SSL_RevealURL (sockfd); - - if (host && *host) { - status = CERT_VerifyCertName (cert, host); - } else { - PR_SetError (SSL_ERROR_BAD_CERT_DOMAIN, 0); - status = SECFailure; - } - - if (host) - PR_Free (host); - - return secStatus; -} -#endif - -static SECStatus -ssl_bad_cert (void *data, PRFileDesc *sockfd) -{ - unsigned char md5sum[16], fingerprint[40], *f; - gboolean accept, valid_cert; - char *prompt, *cert_str; - CamelTcpStreamSSL *ssl; - CERTCertificate *cert; - CamelService *service; - int i; - - g_return_val_if_fail (data != NULL, SECFailure); - g_return_val_if_fail (CAMEL_IS_TCP_STREAM_SSL (data), SECFailure); - - ssl = CAMEL_TCP_STREAM_SSL (data); - service = ssl->priv->service; - - cert = SSL_PeerCertificate (sockfd); - - /* calculate the MD5 hash of the raw certificate */ - md5_get_digest (cert->derCert.data, cert->derCert.len, md5sum); - /*HASH_HashBuf (HASH_AlgMD5, md5sum, cert->derCert.data, cert->derCert.len);*/ - for (i = 0, f = fingerprint; i < 16; i++, f += 3) - sprintf (f, "%.2x%c", md5sum[i], i != 15 ? ':' : '\0'); - - valid_cert = CERT_VerifyCertNow (CERT_GetDefaultCertDB (), cert, TRUE, certUsageSSLClient, NULL); - /*issuer = CERT_FindCertByName (CERT_GetDefaultCertDB (), &cert->derIssuer); - valid_cert = issuer && CERT_VerifySignedData (&cert->signatureWrap, issuer, PR_Now (), NULL);*/ - - cert_str = g_strdup_printf (_("Issuer: %s\n" - "Subject: %s\n" - "Fingerprint: %s\n" - "Signature: %s"), - CERT_NameToAscii (&cert->issuer), - CERT_NameToAscii (&cert->subject), - fingerprint, valid_cert ? _("GOOD") : _("BAD")); - - /* construct our user prompt */ - prompt = g_strdup_printf (_("SSL Certificate check for %s:\n\n%s\n\nDo you wish to accept?"), - service->url->host, cert_str); - g_free (cert_str); - - /* query the user to find out if we want to accept this certificate */ - accept = camel_session_alert_user (service->session, CAMEL_SESSION_ALERT_WARNING, prompt, TRUE); - g_free (prompt); - - if (accept) { -#if 0 - /* this is how mutt does it but last time I tried to - use CERT_AddTempCertToPerm() I got link errors and - I have also been told by the nss devs that that - function has been deprecated... */ - CERTCertTrust trust; - - CERT_DecodeTrustString (&trust, "P,,"); - - CERT_AddTempCertToPerm (cert, NULL, &trust); -#else - SECItem *certs[1]; - - if (!cert->trust) - cert->trust = PORT_ZAlloc (sizeof (CERTCertTrust)); - - cert->trust->sslFlags = CERTDB_VALID_PEER | CERTDB_TRUSTED; - - certs[0] = &cert->derCert; - - CERT_ImportCerts (CERT_GetDefaultCertDB (), certUsageSSLServer, 1, certs, - NULL, TRUE, FALSE, cert->nickname); -#endif - return SECSuccess; - } - - return SECFailure; -} - -static PRFileDesc * -enable_ssl (CamelTcpStreamSSL *ssl, PRFileDesc *fd) -{ - PRFileDesc *ssl_fd; - - ssl_fd = SSL_ImportFD (NULL, fd ? fd : ssl->priv->sockfd); - if (!ssl_fd) - return NULL; - - SSL_OptionSet (ssl_fd, SSL_SECURITY, PR_TRUE); - SSL_SetURL (ssl_fd, ssl->priv->expected_host); - - /*SSL_GetClientAuthDataHook (sslSocket, ssl_get_client_auth, (void *) certNickname);*/ - /*SSL_AuthCertificateHook (ssl_fd, ssl_auth_cert, (void *) CERT_GetDefaultCertDB ());*/ - SSL_BadCertHook (ssl_fd, ssl_bad_cert, ssl); - - ssl->priv->ssl_mode = TRUE; - - return ssl_fd; -} - -static int -stream_connect (CamelTcpStream *stream, struct hostent *host, int port) -{ - CamelTcpStreamSSL *ssl = CAMEL_TCP_STREAM_SSL (stream); - PRIntervalTime timeout = PR_INTERVAL_MIN; - PRNetAddr netaddr; - PRFileDesc *fd; - - g_return_val_if_fail (host != NULL, -1); - - memset ((void *) &netaddr, 0, sizeof (PRNetAddr)); - memcpy (&netaddr.inet.ip, host->h_addr, sizeof (netaddr.inet.ip)); - - if (PR_InitializeNetAddr (PR_IpAddrNull, port, &netaddr) == PR_FAILURE) { - set_errno (PR_GetError ()); - return -1; - } - - fd = PR_OpenTCPSocket (host->h_addrtype); - if (fd == NULL) { - set_errno (PR_GetError ()); - return -1; - } - - if (ssl->priv->ssl_mode) { - PRFileDesc *ssl_fd; - - ssl_fd = enable_ssl (ssl, fd); - if (ssl_fd == NULL) { - int errnosave; - - set_errno (PR_GetError ()); - errnosave = errno; - PR_Close (fd); - errno = errnosave; - - return -1; - } - - fd = ssl_fd; - } - - if (PR_Connect (fd, &netaddr, timeout) == PR_FAILURE) { - int errnosave; - - set_errno (PR_GetError ()); - if (errno == EINPROGRESS) { - gboolean connected = FALSE; - PRPollDesc poll; - - do { - poll.fd = fd; - poll.in_flags = PR_POLL_WRITE | PR_POLL_EXCEPT; - poll.out_flags = 0; - - timeout = PR_INTERVAL_MIN; - - if (PR_Poll (&poll, 1, timeout) == PR_FAILURE) { - set_errno (PR_GetError ()); - goto exception; - } - - if (PR_GetConnectStatus (&poll) == PR_FAILURE) { - set_errno (PR_GetError ()); - if (errno != EINPROGRESS) - goto exception; - } else { - connected = TRUE; - } - } while (!connected); - } else { - exception: - errnosave = errno; - PR_Close (fd); - ssl->priv->sockfd = NULL; - errno = errnosave; - - return -1; - } - - errno = 0; - } - - ssl->priv->sockfd = fd; - - return 0; -} - - -static int -stream_getsockopt (CamelTcpStream *stream, CamelSockOptData *data) -{ - PRSocketOptionData sodata; - - memset ((void *) &sodata, 0, sizeof (sodata)); - memcpy ((void *) &sodata, (void *) data, sizeof (CamelSockOptData)); - - if (PR_GetSocketOption (((CamelTcpStreamSSL *)stream)->priv->sockfd, &sodata) == PR_FAILURE) - return -1; - - memcpy ((void *) data, (void *) &sodata, sizeof (CamelSockOptData)); - - return 0; -} - -static int -stream_setsockopt (CamelTcpStream *stream, const CamelSockOptData *data) -{ - PRSocketOptionData sodata; - - memset ((void *) &sodata, 0, sizeof (sodata)); - memcpy ((void *) &sodata, (void *) data, sizeof (CamelSockOptData)); - - if (PR_SetSocketOption (((CamelTcpStreamSSL *)stream)->priv->sockfd, &sodata) == PR_FAILURE) - return -1; - - return 0; -} - -static CamelTcpAddress * -stream_get_local_address (CamelTcpStream *stream) -{ - PRFileDesc *sockfd = CAMEL_TCP_STREAM_SSL (stream)->priv->sockfd; - PRNetAddr addr; - - PR_GetSockName (sockfd, &addr); - if (addr.inet.family != PR_AF_INET) - return NULL; - - return camel_tcp_address_new (CAMEL_TCP_ADDRESS_IPV4, addr.inet.port, - 4, &addr.inet.ip); -} - -static CamelTcpAddress * -stream_get_remote_address (CamelTcpStream *stream) -{ - PRFileDesc *sockfd = CAMEL_TCP_STREAM_SSL (stream)->priv->sockfd; - PRNetAddr addr; - - PR_GetPeerName (sockfd, &addr); - if (addr.inet.family != PR_AF_INET) - return NULL; - - return camel_tcp_address_new (CAMEL_TCP_ADDRESS_IPV4, addr.inet.port, - 4, &addr.inet.ip); -} - -#endif /* HAVE_NSS */ |