You should have received a copy of the GNU General Public License
along with Wget; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+In addition, as a special exception, the Free Software Foundation
+gives permission to link the code of its release of Wget with the
+OpenSSL project's "OpenSSL" library (or with modified versions of it
+that use the same license as the "OpenSSL" library), and distribute
+the linked executables. You must obey the GNU General Public License
+in all respects for all of the code used other than "OpenSSL". If you
+modify this file, you may extend this exception to your version of the
+file, but you are not obligated to do so. If you do not wish to do
+so, delete this exception statement from your version. */
#include <config.h>
-#ifdef HAVE_SSL
-
#include <assert.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
extern int errno;
#endif
-static int verify_callback PARAMS ((int, X509_STORE_CTX *));
-
void
ssl_init_prng (void)
{
#endif /* SSLEAY_VERSION_NUMBER >= 0x00905100 */
}
-/* Creates a SSL Context and sets some defaults for it */
-uerr_t
-init_ssl (SSL_CTX **ctx)
-{
- SSL_METHOD *meth = NULL;
- int verify = SSL_VERIFY_NONE;
- SSL_library_init ();
- SSL_load_error_strings ();
- SSLeay_add_all_algorithms ();
- SSLeay_add_ssl_algorithms ();
- meth = SSLv23_client_method ();
- *ctx = SSL_CTX_new (meth);
- SSL_CTX_set_verify (*ctx, verify, verify_callback);
- if (*ctx == NULL) return SSLERRCTXCREATE;
- if (opt.sslcertfile)
- {
- if (SSL_CTX_use_certificate_file (*ctx, opt.sslcertfile,
- SSL_FILETYPE_PEM) <= 0)
- return SSLERRCERTFILE;
- if (opt.sslcertkey == NULL)
- opt.sslcertkey=opt.sslcertfile;
- if (SSL_CTX_use_PrivateKey_file (*ctx, opt.sslcertkey,
- SSL_FILETYPE_PEM) <= 0)
- return SSLERRCERTKEY;
- }
- return 0; /* Succeded */
-}
-
-/* Sets up a SSL structure and performs the handshake on fd
- Returns 0 if everything went right
- Returns 1 if something went wrong ----- TODO: More exit codes
-*/
-int
-connect_ssl (SSL **con, SSL_CTX *ctx, int fd)
-{
- *con = (SSL *)SSL_new (ctx);
- SSL_set_fd (*con, fd);
- SSL_set_connect_state (*con);
- SSL_connect (*con);
- if ((*con)->state != SSL_ST_OK)
- return 1;
- /*while((SSLerror=ERR_get_error())!=0)
- printf("%s\n", ERR_error_string(SSLerror,NULL));*/
-
- return 0;
-}
-
-void
-shutdown_ssl (SSL* con)
-{
- SSL_shutdown (con);
- if (con != NULL)
- SSL_free (con);
-}
-
-void
-free_ssl_ctx (SSL_CTX * ctx)
-{
- SSL_CTX_free (ctx);
-}
-
int
verify_callback (int ok, X509_STORE_CTX *ctx)
{
switch (ctx->error) {
case X509_V_ERR_CERT_NOT_YET_VALID:
case X509_V_ERR_CERT_HAS_EXPIRED:
+ /* This mean the CERT is not valid !!! */
+ ok = 0;
+ break;
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+ /* Unsure if we should handle that this way */
ok = 1;
+ break;
}
}
return ok;
int ocerr = 0;
unsigned long curerr = 0;
char errbuff[1024];
- memset(errbuff, 0, sizeof(errbuff));
- for (curerr = ERR_get_error (); curerr; curerr = ERR_get_error ())
+ xzero (errbuff);
+ while ((curerr = ERR_get_error ()) != 0)
{
DEBUGP (("OpenSSL: %s\n", ERR_error_string (curerr, errbuff)));
++ocerr;
return ocerr;
}
-/* SSL version of iread. Only exchanged read for SSL_read
- Read at most LEN bytes from FD, storing them to BUF. This is
- virtually the same as read(), but takes care of EINTR braindamage
- and uses select() to timeout the stale connections (a connection is
- stale if more than OPT.TIMEOUT time is spent in select() or
- read()). */
-int
-ssl_iread (SSL *con, char *buf, int len)
+/* Creates a SSL Context and sets some defaults for it */
+uerr_t
+init_ssl (SSL_CTX **ctx)
{
- int res;
- int fd;
- BIO_get_fd (con->rbio, &fd);
- do
+ SSL_METHOD *meth = NULL;
+ int verify;
+ int can_validate;
+ SSL_library_init ();
+ SSL_load_error_strings ();
+ SSLeay_add_all_algorithms ();
+ SSLeay_add_ssl_algorithms ();
+ switch (opt.sslprotocol)
{
-#ifdef HAVE_SELECT
- if (opt.timeout && !SSL_pending (con))
+ default:
+ meth = SSLv23_client_method ();
+ break;
+ case 1 :
+ meth = SSLv2_client_method ();
+ break;
+ case 2 :
+ meth = SSLv3_client_method ();
+ break;
+ case 3 :
+ meth = TLSv1_client_method ();
+ break;
+ }
+ if (meth == NULL)
+ {
+ ssl_printerrors ();
+ return SSLERRCTXCREATE;
+ }
+
+ *ctx = SSL_CTX_new (meth);
+ if (meth == NULL)
+ {
+ ssl_printerrors ();
+ return SSLERRCTXCREATE;
+ }
+ /* Can we validate the server Cert ? */
+ if (opt.sslcadir != NULL || opt.sslcafile != NULL)
+ {
+ SSL_CTX_load_verify_locations (*ctx, opt.sslcafile, opt.sslcadir);
+ can_validate = 1;
+ }
+ else
+ {
+ can_validate = 0;
+ }
+
+ if (!opt.sslcheckcert)
+ {
+ /* check cert but ignore error, do not break handshake on error */
+ verify = SSL_VERIFY_NONE;
+ }
+ else
+ {
+ if (!can_validate)
{
- do
- {
- res = select_fd (fd, opt.timeout, 0);
- }
- while (res == -1 && errno == EINTR);
- if (res <= 0)
- {
- /* Set errno to ETIMEDOUT on timeout. */
- if (res == 0)
- /* #### Potentially evil! */
- errno = ETIMEDOUT;
- return -1;
- }
+ logprintf (LOG_NOTQUIET, "Warrining validation of Server Cert not possible!\n");
+ verify = SSL_VERIFY_NONE;
+ }
+ else
+ {
+ /* break handshake if server cert is not valid but allow NO-Cert mode */
+ verify = SSL_VERIFY_PEER;
}
-#endif
- res = SSL_read (con, buf, len);
}
- while (res == -1 && errno == EINTR);
+ SSL_CTX_set_verify (*ctx, verify, verify_callback);
+
+ if (opt.sslcertfile != NULL || opt.sslcertkey != NULL)
+ {
+ int ssl_cert_type;
+ if (!opt.sslcerttype)
+ ssl_cert_type = SSL_FILETYPE_PEM;
+ else
+ ssl_cert_type = SSL_FILETYPE_ASN1;
+
+ if (opt.sslcertkey == NULL)
+ opt.sslcertkey = opt.sslcertfile;
+ if (opt.sslcertfile == NULL)
+ opt.sslcertfile = opt.sslcertkey;
+
+ if (SSL_CTX_use_certificate_file (*ctx, opt.sslcertfile, ssl_cert_type) <= 0)
+ {
+ ssl_printerrors ();
+ return SSLERRCERTFILE;
+ }
+ if (SSL_CTX_use_PrivateKey_file (*ctx, opt.sslcertkey , ssl_cert_type) <= 0)
+ {
+ ssl_printerrors ();
+ return SSLERRCERTKEY;
+ }
+ }
+
+ return 0; /* Succeded */
+}
+
+static
+int ssl_read (int fd, char *buf, int bufsize, void *ctx)
+{
+ int res;
+ SSL *ssl = (SSL *) ctx;
+ /* #### Does SSL_read actually set EINTR? */
+ do
+ res = SSL_read (ssl, buf, bufsize);
+ while (res == -1 && errno == EINTR);
return res;
}
-/* SSL version of iwrite. Only exchanged write for SSL_write
- Write LEN bytes from BUF to FD. This is similar to iread(), but
- doesn't bother with select(). Unlike iread(), it makes sure that
- all of BUF is actually written to FD, so callers needn't bother
- with checking that the return value equals to LEN. Instead, you
- should simply check for -1. */
-int
-ssl_iwrite (SSL *con, char *buf, int len)
+static int
+ssl_write (int fd, char *buf, int bufsize, void *ctx)
{
int res = 0;
- int fd;
- BIO_get_fd (con->rbio, &fd);
- /* `write' may write less than LEN bytes, thus the outward loop
- keeps trying it until all was written, or an error occurred. The
- inner loop is reserved for the usual EINTR f*kage, and the
- innermost loop deals with the same during select(). */
- while (len > 0)
- {
- do
- {
+ SSL *ssl = (SSL *) ctx;
+ /* #### Does SSL_write actually set EINTR? */
+ do
+ res = SSL_write (ssl, buf, bufsize);
+ while (res == -1 && errno == EINTR);
+ return res;
+}
+
+static int
+ssl_poll (int fd, double timeout, int wait_for, void *ctx)
+{
+ SSL *ssl = (SSL *) ctx;
+ if (timeout == 0)
+ return 1;
+ if (SSL_pending (ssl))
+ return 1;
#ifdef HAVE_SELECT
- if (opt.timeout)
- {
- do
- {
- res = select_fd (fd, opt.timeout, 1);
- }
- while (res == -1 && errno == EINTR);
- if (res <= 0)
- {
- /* Set errno to ETIMEDOUT on timeout. */
- if (res == 0)
- /* #### Potentially evil! */
- errno = ETIMEDOUT;
- return -1;
- }
- }
+ return select_fd (fd, timeout, wait_for);
+#else
+ return 1;
#endif
- res = SSL_write (con, buf, len);
- }
- while (res == -1 && errno == EINTR);
- if (res <= 0)
- break;
- buf += res;
- len -= res;
- }
- return res;
}
-#endif /* HAVE_SSL */
+
+static void
+ssl_close (int fd, void *ctx)
+{
+ SSL *ssl = (SSL *) ctx;
+ SSL_shutdown (ssl);
+ SSL_free (ssl);
+
+#ifdef WINDOWS
+ closesocket (fd);
+#else
+ close (fd);
+#endif
+
+ DEBUGP (("Closed %d/SSL 0x%0lx\n", fd, (unsigned long) ssl));
+}
+
+/* Sets up a SSL structure and performs the handshake on fd. */
+
+SSL *
+connect_ssl (int fd, SSL_CTX *ctx)
+{
+ SSL *ssl = SSL_new (ctx);
+ if (!ssl)
+ goto err;
+ if (!SSL_set_fd (ssl, fd))
+ goto err;
+ SSL_set_connect_state (ssl);
+ if (SSL_connect (ssl) <= 0 || ssl->state != SSL_ST_OK)
+ goto err;
+
+ /* Register the FD to use our functions for read, write, etc. That
+ way the rest of Wget can keep using xread, xwrite, and
+ friends. */
+ register_extended (fd, ssl_read, ssl_write, ssl_poll, ssl_close, ssl);
+ DEBUGP (("Connected %d to SSL 0x%0lx\n", fd, (unsigned long) ssl));
+ return ssl;
+
+ err:
+ ssl_printerrors ();
+ if (ssl)
+ SSL_free (ssl);
+ return NULL;
+}
+
+void
+free_ssl_ctx (SSL_CTX * ctx)
+{
+ SSL_CTX_free (ctx);
+}