diff options
Diffstat (limited to 'camel/camel-tcp-stream-openssl.c')
| -rw-r--r-- | camel/camel-tcp-stream-openssl.c | 957 |
1 files changed, 0 insertions, 957 deletions
diff --git a/camel/camel-tcp-stream-openssl.c b/camel/camel-tcp-stream-openssl.c deleted file mode 100644 index f83a6d0d72..0000000000 --- a/camel/camel-tcp-stream-openssl.c +++ /dev/null @@ -1,957 +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. - * - */ - - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#ifdef HAVE_OPENSSL - -#include "camel-tcp-stream-ssl.h" - -#include <openssl/ssl.h> -#include <openssl/x509.h> -#include <openssl/err.h> -#include <sys/time.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> -#include <fcntl.h> -#include <errno.h> -#include <string.h> -#include "camel-session.h" -#include "camel-service.h" -#include "camel-operation.h" -#include "camel-certdb.h" -#ifdef ENABLE_THREADS -#include <pthread.h> -#endif - -#define d(x) - -#define TIMEOUT_USEC (10000) - -static CamelTcpStreamClass *parent_class = NULL; - -/* Returns the class for a CamelTcpStreamSSL */ -#define CTSR_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 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); - -static SSL *open_ssl_connection (CamelService *service, int sockfd, CamelTcpStreamSSL *openssl); - -struct _CamelTcpStreamSSLPrivate { - int sockfd; - SSL *ssl; - - CamelService *service; - char *expected_host; - gboolean ssl_mode; - guint32 flags; -}; - -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; - - /* init OpenSSL stuff */ - SSLeay_add_ssl_algorithms (); - SSL_load_error_strings (); -} - -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); - stream->priv->sockfd = -1; -} - -static void -camel_tcp_stream_ssl_finalize (CamelObject *object) -{ - CamelTcpStreamSSL *stream = CAMEL_TCP_STREAM_SSL (object); - - if (stream->priv->ssl) { - SSL_shutdown (stream->priv->ssl); - - if (stream->priv->ssl->ctx) { - SSL_CTX_free (stream->priv->ssl->ctx); - } - - SSL_free (stream->priv->ssl); - } - - if (stream->priv->sockfd != -1) - 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 expecting to connect with. - * @flags: flags - * - * 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, guint32 flags) -{ - 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; - stream->priv->flags = flags; - - return CAMEL_STREAM (stream); -} - - -/** - * camel_tcp_stream_ssl_new_raw: - * @service: camel service - * @expected_host: host that the stream is expecting to connect with. - * @flags: flags - * - * 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, guint32 flags) -{ - 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; - stream->priv->flags = flags; - - return CAMEL_STREAM (stream); -} - - -static int -ssl_errno (SSL *ssl, int ret) -{ - switch (SSL_get_error (ssl, ret)) { - case SSL_ERROR_NONE: - return 0; - case SSL_ERROR_ZERO_RETURN: - /* this one does not map well at all */ - d(printf ("ssl_errno: SSL_ERROR_ZERO_RETURN\n")); - return EINVAL; - case SSL_ERROR_WANT_READ: /* non-fatal; retry */ - case SSL_ERROR_WANT_WRITE: /* non-fatal; retry */ - d(printf ("ssl_errno: SSL_ERROR_WANT_[READ,WRITE]\n")); - return EAGAIN; - case SSL_ERROR_SYSCALL: - d(printf ("ssl_errno: SSL_ERROR_SYSCALL\n")); - return EINTR; - case SSL_ERROR_SSL: - d(printf ("ssl_errno: SSL_ERROR_SSL <-- very useful error...riiiiight\n")); - return EINTR; - default: - d(printf ("ssl_errno: default error\n")); - return EINTR; - } -} - - -/** - * camel_tcp_stream_ssl_enable_ssl: - * @stream: 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 *stream) -{ - SSL *ssl; - - g_return_val_if_fail (CAMEL_IS_TCP_STREAM_SSL (stream), -1); - - if (stream->priv->sockfd != -1 && !stream->priv->ssl_mode) { - ssl = open_ssl_connection (stream->priv->service, stream->priv->sockfd, stream); - if (ssl == NULL) { - stream->priv->sockfd = -1; - return -1; - } - - stream->priv->ssl = ssl; - } - - stream->priv->ssl_mode = TRUE; - - return 0; -} - - -static ssize_t -stream_read (CamelStream *stream, char *buffer, size_t n) -{ - CamelTcpStreamSSL *openssl = CAMEL_TCP_STREAM_SSL (stream); - SSL *ssl = openssl->priv->ssl; - ssize_t nread; - int cancel_fd; - - if (camel_operation_cancel_check (NULL)) { - errno = EINTR; - return -1; - } - - cancel_fd = camel_operation_cancel_fd (NULL); - if (cancel_fd == -1) { - do { - if (ssl) { - nread = SSL_read (ssl, buffer, n); - if (nread < 0) - errno = ssl_errno (ssl, nread); - } else { - nread = read (openssl->priv->sockfd, buffer, n); - } - } while (nread < 0 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)); - } else { - int error, flags, fdmax; - struct timeval timeout; - fd_set rdset; - - flags = fcntl (openssl->priv->sockfd, F_GETFL); - fcntl (openssl->priv->sockfd, F_SETFL, flags | O_NONBLOCK); - - fdmax = MAX (openssl->priv->sockfd, cancel_fd) + 1; - - do { - FD_ZERO (&rdset); - FD_SET (openssl->priv->sockfd, &rdset); - FD_SET (cancel_fd, &rdset); - - timeout.tv_sec = 0; - timeout.tv_usec = TIMEOUT_USEC; - select (fdmax, &rdset, 0, 0, &timeout); - if (FD_ISSET (cancel_fd, &rdset)) { - fcntl (openssl->priv->sockfd, F_SETFL, flags); - errno = EINTR; - return -1; - } - - do { - if (ssl) { - nread = SSL_read (ssl, buffer, n); - if (nread < 0) - errno = ssl_errno (ssl, nread); - } else { - nread = read (openssl->priv->sockfd, buffer, n); - } - } while (nread < 0 && errno == EINTR); - } while (nread < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)); - - error = errno; - fcntl (openssl->priv->sockfd, F_SETFL, flags); - errno = error; - } - - return nread; -} - -static ssize_t -stream_write (CamelStream *stream, const char *buffer, size_t n) -{ - CamelTcpStreamSSL *openssl = CAMEL_TCP_STREAM_SSL (stream); - SSL *ssl = openssl->priv->ssl; - ssize_t w, written = 0; - int cancel_fd; - - if (camel_operation_cancel_check (NULL)) { - errno = EINTR; - return -1; - } - - cancel_fd = camel_operation_cancel_fd (NULL); - if (cancel_fd == -1) { - do { - do { - if (ssl) { - w = SSL_write (ssl, buffer + written, n - written); - if (w < 0) - errno = ssl_errno (ssl, w); - } else { - w = write (openssl->priv->sockfd, buffer + written, n - written); - } - } while (w < 0 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)); - - if (w > 0) - written += w; - } while (w != -1 && written < n); - } else { - int error, flags, fdmax; - struct timeval timeout; - fd_set rdset, wrset; - - flags = fcntl (openssl->priv->sockfd, F_GETFL); - fcntl (openssl->priv->sockfd, F_SETFL, flags | O_NONBLOCK); - - fdmax = MAX (openssl->priv->sockfd, cancel_fd) + 1; - do { - FD_ZERO (&rdset); - FD_ZERO (&wrset); - FD_SET (openssl->priv->sockfd, &wrset); - FD_SET (cancel_fd, &rdset); - - timeout.tv_sec = 0; - timeout.tv_usec = TIMEOUT_USEC; - select (fdmax, &rdset, &wrset, 0, &timeout); - if (FD_ISSET (cancel_fd, &rdset)) { - fcntl (openssl->priv->sockfd, F_SETFL, flags); - errno = EINTR; - return -1; - } - - do { - if (ssl) { - w = SSL_write (ssl, buffer + written, n - written); - if (w < 0) - errno = ssl_errno (ssl, w); - } else { - w = write (openssl->priv->sockfd, buffer + written, n - written); - } - } while (w < 0 && errno == EINTR); - - if (w < 0) { - if (errno == EAGAIN || errno == EWOULDBLOCK) { - w = 0; - } else { - error = errno; - fcntl (openssl->priv->sockfd, F_SETFL, flags); - errno = error; - return -1; - } - } else - written += w; - } while (w >= 0 && written < n); - - fcntl (openssl->priv->sockfd, F_SETFL, flags); - } - - return written; -} - -static int -stream_flush (CamelStream *stream) -{ - return 0; -} - - -static void -close_ssl_connection (SSL *ssl) -{ - if (ssl) { - SSL_shutdown (ssl); - - if (ssl->ctx) - SSL_CTX_free (ssl->ctx); - - SSL_free (ssl); - } -} - -static int -stream_close (CamelStream *stream) -{ - close_ssl_connection (((CamelTcpStreamSSL *)stream)->priv->ssl); - ((CamelTcpStreamSSL *)stream)->priv->ssl = NULL; - - if (close (((CamelTcpStreamSSL *)stream)->priv->sockfd) == -1) - return -1; - - ((CamelTcpStreamSSL *)stream)->priv->sockfd = -1; - return 0; -} - -/* this is a 'cancellable' connect, cancellable from camel_operation_cancel etc */ -/* returns -1 & errno == EINTR if the connection was cancelled */ -static int -socket_connect (struct hostent *h, int port) -{ -#ifdef ENABLE_IPv6 - struct sockaddr_in6 sin6; -#endif - struct sockaddr_in sin; - struct sockaddr *saddr; - struct timeval tv; - socklen_t len; - int cancel_fd; - int ret, fd; - - /* see if we're cancelled yet */ - if (camel_operation_cancel_check (NULL)) { - errno = EINTR; - return -1; - } - - /* setup connect, we do it using a nonblocking socket so we can poll it */ -#ifdef ENABLE_IPv6 - if (h->h_addrtype == AF_INET6) { - sin6.sin6_port = htons (port); - sin6.sin6_family = h->h_addrtype; - memcpy (&sin6.sin6_addr, h->h_addr, sizeof (sin6.sin6_addr)); - saddr = (struct sockaddr *) &sin6; - len = sizeof (sin6); - } else { -#endif - sin.sin_port = htons (port); - sin.sin_family = h->h_addrtype; - memcpy (&sin.sin_addr, h->h_addr, sizeof (sin.sin_addr)); - saddr = (struct sockaddr *) &sin; - len = sizeof (sin); -#ifdef ENABLE_IPv6 - } -#endif - - fd = socket (h->h_addrtype, SOCK_STREAM, 0); - - cancel_fd = camel_operation_cancel_fd (NULL); - if (cancel_fd == -1) { - ret = connect (fd, saddr, len); - if (ret == -1) { - close (fd); - return -1; - } - - return fd; - } else { - fd_set rdset, wrset; - int flags, fdmax; - - flags = fcntl (fd, F_GETFL); - fcntl (fd, F_SETFL, flags | O_NONBLOCK); - - ret = connect (fd, saddr, len); - if (ret == 0) { - fcntl (fd, F_SETFL, flags); - return fd; - } - - if (errno != EINPROGRESS) { - close (fd); - return -1; - } - - FD_ZERO (&rdset); - FD_ZERO (&wrset); - FD_SET (fd, &wrset); - FD_SET (cancel_fd, &rdset); - fdmax = MAX (fd, cancel_fd) + 1; - tv.tv_usec = 0; - tv.tv_sec = 60 * 4; - - if (select (fdmax, &rdset, &wrset, 0, &tv) == 0) { - close (fd); - errno = ETIMEDOUT; - return -1; - } - - if (cancel_fd != -1 && FD_ISSET (cancel_fd, &rdset)) { - close (fd); - errno = EINTR; - return -1; - } else { - len = sizeof (int); - - if (getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &len) == -1) { - close (fd); - return -1; - } - - if (ret != 0) { - close (fd); - errno = ret; - return -1; - } - } - - fcntl (fd, F_SETFL, flags); - } - - return fd; -} - -static const char * -x509_strerror (int err) -{ - switch (err) { - case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: - return _("Unable to get issuer's certificate"); - case X509_V_ERR_UNABLE_TO_GET_CRL: - return _("Unable to get Certificate Revocation List"); - case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: - return _("Unable to decrypt certificate signature"); - case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: - return _("Unable to decrypt Certificate Revocation List signature"); - case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: - return _("Unable to decode issuer's public key"); - case X509_V_ERR_CERT_SIGNATURE_FAILURE: - return _("Certificate signature failure"); - case X509_V_ERR_CRL_SIGNATURE_FAILURE: - return _("Certificate Revocation List signature failure"); - case X509_V_ERR_CERT_NOT_YET_VALID: - return _("Certificate not yet valid"); - case X509_V_ERR_CERT_HAS_EXPIRED: - return _("Certificate has expired"); - case X509_V_ERR_CRL_NOT_YET_VALID: - return _("CRL not yet valid"); - case X509_V_ERR_CRL_HAS_EXPIRED: - return _("CRL has expired"); - case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: - case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: - case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: - case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: - return _("Error in CRL"); - case X509_V_ERR_OUT_OF_MEM: - return _("Out of memory"); - case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: - return _("Zero-depth self-signed certificate"); - case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: - return _("Self-signed certificate in chain"); - case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: - return _("Unable to get issuer's certificate locally"); - case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: - return _("Unable to verify leaf signature"); - case X509_V_ERR_CERT_CHAIN_TOO_LONG: - return _("Certificate chain too long"); - case X509_V_ERR_CERT_REVOKED: - return _("Certificate Revoked"); - case X509_V_ERR_INVALID_CA: - return _("Invalid Certificate Authority (CA)"); - case X509_V_ERR_PATH_LENGTH_EXCEEDED: - return _("Path length exceeded"); - case X509_V_ERR_INVALID_PURPOSE: - return _("Invalid purpose"); - case X509_V_ERR_CERT_UNTRUSTED: - return _("Certificate untrusted"); - case X509_V_ERR_CERT_REJECTED: - return _("Certificate rejected"); - /* These are 'informational' when looking for issuer cert */ - case X509_V_ERR_SUBJECT_ISSUER_MISMATCH: - return _("Subject/Issuer mismatch"); - case X509_V_ERR_AKID_SKID_MISMATCH: - return _("AKID/SKID mismatch"); - case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH: - return _("AKID/Issuer serial mismatch"); - case X509_V_ERR_KEYUSAGE_NO_CERTSIGN: - return _("Key usage does not support certificate signing"); - /* The application is not happy */ - case X509_V_ERR_APPLICATION_VERIFICATION: - return _("Error in application verification"); - default: - return _("Unknown"); - } -} - -static int -ssl_verify (int ok, X509_STORE_CTX *ctx) -{ - unsigned char md5sum[16], fingerprint[40], *f; - CamelTcpStreamSSL *stream; - CamelService *service; - CamelCertDB *certdb = NULL; - CamelCert *ccert = NULL; - char *prompt, *cert_str; - int err, md5len, i; - char buf[257]; - X509 *cert; - SSL *ssl; - - if (ok) - return TRUE; - - ssl = X509_STORE_CTX_get_ex_data (ctx, SSL_get_ex_data_X509_STORE_CTX_idx ()); - - stream = SSL_CTX_get_app_data (ssl->ctx); - if (!stream) - return FALSE; - - service = stream->priv->service; - - cert = X509_STORE_CTX_get_current_cert (ctx); - err = X509_STORE_CTX_get_error (ctx); - - /* calculate the MD5 hash of the raw certificate */ - md5len = sizeof (md5sum); - X509_digest (cert, EVP_md5 (), md5sum, &md5len); - for (i = 0, f = fingerprint; i < 16; i++, f += 3) - sprintf (f, "%.2x%c", md5sum[i], i != 15 ? ':' : '\0'); - -#define GET_STRING(name) X509_NAME_oneline (name, buf, 256) - - certdb = camel_certdb_get_default (); - if (certdb) { - ccert = camel_certdb_get_cert (certdb, fingerprint); - if (ccert) { - if (ccert->trust != CAMEL_CERT_TRUST_UNKNOWN) { - ok = ccert->trust != CAMEL_CERT_TRUST_NEVER; - camel_certdb_cert_unref (certdb, ccert); - camel_object_unref (certdb); - - return ok; - } - } else { - /* create a new camel-cert */ - ccert = camel_certdb_cert_new (certdb); - camel_cert_set_issuer (certdb, ccert, GET_STRING (X509_get_issuer_name (cert))); - camel_cert_set_subject (certdb, ccert, GET_STRING (X509_get_subject_name (cert))); - camel_cert_set_hostname (certdb, ccert, stream->priv->expected_host); - camel_cert_set_fingerprint (certdb, ccert, fingerprint); - camel_cert_set_trust (certdb, ccert, CAMEL_CERT_TRUST_UNKNOWN); - - /* Add the certificate to our db */ - camel_certdb_add (certdb, ccert); - } - } - - cert_str = g_strdup_printf (_("Issuer: %s\n" - "Subject: %s\n" - "Fingerprint: %s\n" - "Signature: %s"), - GET_STRING (X509_get_issuer_name (cert)), - GET_STRING (X509_get_subject_name (cert)), - fingerprint, cert->valid ? _("GOOD") : _("BAD")); - - prompt = g_strdup_printf (_("Bad certificate from %s:\n\n%s\n\n%s\n\n" - "Do you wish to accept anyway?"), - service->url->host, cert_str, x509_strerror (err)); - - ok = camel_session_alert_user (service->session, CAMEL_SESSION_ALERT_WARNING, prompt, TRUE); - g_free (prompt); - - if (ok && ccert) { - camel_cert_set_trust (certdb, ccert, CAMEL_CERT_TRUST_FULLY); - camel_certdb_touch (certdb); - } - - if (certdb) { - camel_certdb_cert_unref (certdb, ccert); - camel_object_unref (certdb); - } - - return ok; -} - -static SSL * -open_ssl_connection (CamelService *service, int sockfd, CamelTcpStreamSSL *openssl) -{ - SSL_CTX *ssl_ctx = NULL; - SSL *ssl = NULL; - int n; - - /* SSLv23_client_method will negotiate with SSL v2, v3, or TLS v1 */ - ssl_ctx = SSL_CTX_new (SSLv23_client_method ()); - g_return_val_if_fail (ssl_ctx != NULL, NULL); - - SSL_CTX_set_verify (ssl_ctx, SSL_VERIFY_PEER, &ssl_verify); - ssl = SSL_new (ssl_ctx); - SSL_set_fd (ssl, sockfd); - - SSL_CTX_set_app_data (ssl_ctx, openssl); - - n = SSL_connect (ssl); - if (n != 1) { - int errnosave = ssl_errno (ssl, n); - - SSL_shutdown (ssl); - - if (ssl->ctx) - SSL_CTX_free (ssl->ctx); - - SSL_free (ssl); - ssl = NULL; - - close (sockfd); - - errno = errnosave; - } - - return ssl; -} - -static int -stream_connect (CamelTcpStream *stream, struct hostent *host, int port) -{ - CamelTcpStreamSSL *openssl = CAMEL_TCP_STREAM_SSL (stream); - SSL *ssl = NULL; - int fd; - - g_return_val_if_fail (host != NULL, -1); - - fd = socket_connect (host, port); - if (fd == -1) - return -1; - - if (openssl->priv->ssl_mode) { - ssl = open_ssl_connection (openssl->priv->service, fd, openssl); - if (!ssl) - return -1; - } - - openssl->priv->sockfd = fd; - openssl->priv->ssl = ssl; - - return 0; -} - - -static int -get_sockopt_level (const CamelSockOptData *data) -{ - switch (data->option) { - case CAMEL_SOCKOPT_MAXSEGMENT: - case CAMEL_SOCKOPT_NODELAY: - return IPPROTO_TCP; - default: - return SOL_SOCKET; - } -} - -static int -get_sockopt_optname (const CamelSockOptData *data) -{ - switch (data->option) { - case CAMEL_SOCKOPT_MAXSEGMENT: - return TCP_MAXSEG; - case CAMEL_SOCKOPT_NODELAY: - return TCP_NODELAY; - case CAMEL_SOCKOPT_BROADCAST: - return SO_BROADCAST; - case CAMEL_SOCKOPT_KEEPALIVE: - return SO_KEEPALIVE; - case CAMEL_SOCKOPT_LINGER: - return SO_LINGER; - case CAMEL_SOCKOPT_RECVBUFFERSIZE: - return SO_RCVBUF; - case CAMEL_SOCKOPT_SENDBUFFERSIZE: - return SO_SNDBUF; - case CAMEL_SOCKOPT_REUSEADDR: - return SO_REUSEADDR; - case CAMEL_SOCKOPT_IPTYPEOFSERVICE: - return SO_TYPE; - default: - return -1; - } -} - -static int -stream_getsockopt (CamelTcpStream *stream, CamelSockOptData *data) -{ - int optname, optlen; - - if ((optname = get_sockopt_optname (data)) == -1) - return -1; - - if (data->option == CAMEL_SOCKOPT_NONBLOCKING) { - int flags; - - flags = fcntl (((CamelTcpStreamSSL *) stream)->priv->sockfd, F_GETFL); - if (flags == -1) - return -1; - - data->value.non_blocking = flags & O_NONBLOCK ? TRUE : FALSE; - - return 0; - } - - return getsockopt (((CamelTcpStreamSSL *) stream)->priv->sockfd, - get_sockopt_level (data), - optname, - (void *) &data->value, - &optlen); -} - -static int -stream_setsockopt (CamelTcpStream *stream, const CamelSockOptData *data) -{ - int optname; - - if ((optname = get_sockopt_optname (data)) == -1) - return -1; - - if (data->option == CAMEL_SOCKOPT_NONBLOCKING) { - int flags, set; - - flags = fcntl (((CamelTcpStreamSSL *) stream)->priv->sockfd, F_GETFL); - if (flags == -1) - return -1; - - set = data->value.non_blocking ? O_NONBLOCK : 0; - flags = (flags & ~O_NONBLOCK) | set; - - if (fcntl (((CamelTcpStreamSSL *) stream)->priv->sockfd, F_SETFL, flags) == -1) - return -1; - - return 0; - } - - return setsockopt (((CamelTcpStreamSSL *) stream)->priv->sockfd, - get_sockopt_level (data), - optname, - (void *) &data->value, - sizeof (data->value)); -} - -#ifdef ENABLE_IPv6 -#define MIN_SOCKADDR_BUFLEN (sizeof (struct sockaddr_in6)) -#else -#define MIN_SOCKADDR_BUFLEN (sizeof (struct sockaddr_in)) -#endif - -static CamelTcpAddress * -stream_get_local_address (CamelTcpStream *stream) -{ - unsigned char buf[MIN_SOCKADDR_BUFLEN]; -#ifdef ENABLE_IPv6 - struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) buf; -#endif - struct sockaddr_in *sin = (struct sockaddr_in *) buf; - struct sockaddr *saddr = (struct sockaddr *) buf; - gpointer address; - socklen_t len; - int family; - - len = MIN_SOCKADDR_BUFLEN; - - if (getsockname (CAMEL_TCP_STREAM_SSL (stream)->priv->sockfd, saddr, &len) == -1) - return NULL; - - if (saddr->sa_family == AF_INET) { - family = CAMEL_TCP_ADDRESS_IPv4; - address = &sin->sin_addr; -#ifdef ENABLE_IPv6 - } else if (saddr->sa_family == AF_INET6) { - family = CAMEL_TCP_ADDRESS_IPv6; - address = &sin6->sin6_addr; -#endif - } else - return NULL; - - return camel_tcp_address_new (family, sin->sin_port, len, address); -} - -static CamelTcpAddress * -stream_get_remote_address (CamelTcpStream *stream) -{ - unsigned char buf[MIN_SOCKADDR_BUFLEN]; -#ifdef ENABLE_IPv6 - struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *) buf; -#endif - struct sockaddr_in *sin = (struct sockaddr_in *) buf; - struct sockaddr *saddr = (struct sockaddr *) buf; - gpointer address; - socklen_t len; - int family; - - len = MIN_SOCKADDR_BUFLEN; - - if (getpeername (CAMEL_TCP_STREAM_SSL (stream)->priv->sockfd, saddr, &len) == -1) - return NULL; - - if (saddr->sa_family == AF_INET) { - family = CAMEL_TCP_ADDRESS_IPv4; - address = &sin->sin_addr; -#ifdef ENABLE_IPv6 - } else if (saddr->sa_family == AF_INET6) { - family = CAMEL_TCP_ADDRESS_IPv6; - address = &sin6->sin6_addr; -#endif - } else - return NULL; - - return camel_tcp_address_new (family, sin->sin_port, len, address); -} - -#endif /* HAVE_OPENSSL */ |