2006-12-17 Marcus Brinkmann <marcus@g10code.de>

* configure.ac: Fix two typos in last change.

gpgme/
2006-12-17  Marcus Brinkmann  <marcus@g10code.de>

	* gpgme.c (gpgme_set_protocol): Shut down the engine when
	switching protocols.
	(gpgme_ctx_set_engine_info): Likewise for engine info.
	* engine.h (_gpgme_engine_reset): New function prototype.
	* engine.c (_gpgme_engine_reset): New function.
	* engine-backend.h (struct engine_ops): New member RESET.
	* rungpg.c (_gpgme_engine_ops_gpg): Add NULL for reset function.
	* engine-gpgsm.c (_gpgme_engine_ops_gpgsm)
	[USE_DESCRIPTOR_PASSING]: Add gpgsm_reset for reset.
	(_gpgme_engine_ops_gpgsm) [!USE_DESCRIPTOR_PASSING]: Add NULL for
	reset function.
	(gpgsm_reset) [USE_DESCRIPTOR_PASSING]: New function.
	* op-support.c (_gpgme_op_reset): Try to use the engine's reset
	function if available.
	* engine-gpgsm.c (gpgsm_new): Move code to dup status_fd to ...
	(start): ... here.
	* posix-io.c (_gpgme_io_recvmsg, _gpgme_io_sendmsg): New functions.

ChangeLog

@@ -1,3 +1,7 @@
+2006-12-17  Marcus Brinkmann  <marcus@g10code.de>
+
+	* configure.ac: Fix two typos in last change.
+
 2006-12-03  Marcus Brinkmann  <marcus@g10code.de>
 
 	* configure.ac: Use descriptor passing only if --enable-fd-passing

TODO

@@ -78,6 +78,8 @@ Hey Emacs, this is -*- outline -*- mode!
    release everything properly at a reset and at an error.  Think hard
    about where to guarantee what (ie, what happens if start fails, are
    the fds unregistered immediately - i think so?)
+   Note that we need support in gpgsm to set include-certs to default
+   as RESET does not reset it.
 ** Optimize the case where a data object has 0an underlying fd we can pass
    directly to the engine.  This will be automatic with socket I/O and
    descriptor passing.

assuan/assuan.h

@@ -75,6 +75,8 @@ int _gpgme_ath_accept (int s, struct sockaddr *addr, socklen_t *length_ptr);
 int _gpgme_ath_connect (int s, struct sockaddr *addr, socklen_t length);
 int _gpgme_ath_sendmsg (int s, const struct msghdr *msg, int flags);
 int _gpgme_ath_recvmsg (int s, struct msghdr *msg, int flags);
+int _gpgme_io_sendmsg (int sock, const struct msghdr *msg, int flags);
+int _gpgme_io_recvmsg (int sock, struct msghdr *msg, int flags);
 #endif /*!HAVE_W32_SYSTEM*/
 
 #define read          _gpgme_io_read
@@ -83,8 +85,8 @@ int _gpgme_ath_recvmsg (int s, struct msghdr *msg, int flags);
 #define select	      _gpgme_ath_select
 #define accept        _gpgme_ath_accept
 #define connect       _gpgme_ath_connect
-#define sendmsg	      _gpgme_ath_sendmsg
+#define sendmsg	      _gpgme_io_sendmsg
-#define recvmsg       _gpgme_ath_recvmsg
+#define recvmsg       _gpgme_io_recvmsg
 #endif /*_ASSUAN_IN_GPGME_BUILD_ASSUAN*/
 /**** End GPGME specific modifications. ******/
 

configure.ac

@@ -491,7 +491,7 @@ AC_CHECK_MEMBER(struct cmsghdr.cmsg_len,
 
 AC_ARG_ENABLE(fd-passing,
   AC_HELP_STRING([--enable-fd-passing], [use FD passing if supported]),
-  use_desciptor_passing=$withval)
+  use_descriptor_passing=$enableval)
 
 if test "$supports_descriptor_passing" != "yes"; then
   use_descriptor_passing=no

gpgme/ChangeLog

@@ -1,5 +1,23 @@
 2006-12-17  Marcus Brinkmann  <marcus@g10code.de>
 
+	* gpgme.c (gpgme_set_protocol): Shut down the engine when
+	switching protocols.
+	(gpgme_ctx_set_engine_info): Likewise for engine info.
+	* engine.h (_gpgme_engine_reset): New function prototype.
+	* engine.c (_gpgme_engine_reset): New function.
+	* engine-backend.h (struct engine_ops): New member RESET.
+	* rungpg.c (_gpgme_engine_ops_gpg): Add NULL for reset function.
+	* engine-gpgsm.c (_gpgme_engine_ops_gpgsm)
+	[USE_DESCRIPTOR_PASSING]: Add gpgsm_reset for reset.
+	(_gpgme_engine_ops_gpgsm) [!USE_DESCRIPTOR_PASSING]: Add NULL for
+	reset function.
+	(gpgsm_reset) [USE_DESCRIPTOR_PASSING]: New function.
+	* op-support.c (_gpgme_op_reset): Try to use the engine's reset
+	function if available.
+	* engine-gpgsm.c (gpgsm_new): Move code to dup status_fd to ...
+	(start): ... here.
+	* posix-io.c (_gpgme_io_recvmsg, _gpgme_io_sendmsg): New functions.
+	
 	* engine.h (_gpgme_engine_new): Remove arguments lc_ctype and
 	lc_messages from prototype.
 	(_gpgme_engine_set_locale): New prototype.

gpgme/engine-backend.h

@@ -49,6 +49,7 @@ struct engine_ops
 
   /* Member functions.  */
   void (*release) (void *engine);
+  gpgme_error_t (*reset) (void *engine);
   void (*set_status_handler) (void *engine, engine_status_handler_t fnc,
 			      void *fnc_value);
   gpgme_error_t (*set_command_handler) (void *engine,

gpgme/engine-gpgsm.c

@@ -334,15 +334,15 @@ gpgsm_new (void **engine, const char *file_name, const char *home_dir)
   char dft_ttyname[64];
   char *dft_ttytype = NULL;
   char *optstr;
-  int fdlist[5];
-  int nfds;
 
   gpgsm = calloc (1, sizeof *gpgsm);
   if (!gpgsm)
     return gpg_error_from_errno (errno);
 
   gpgsm->status_cb.fd = -1;
+  gpgsm->status_cb.dir = 1;
   gpgsm->status_cb.tag = 0;
+  gpgsm->status_cb.data = gpgsm;
 
   gpgsm->input_cb.fd = -1;
   gpgsm->input_cb.dir = 0;
@@ -423,30 +423,6 @@ gpgsm_new (void **engine, const char *file_name, const char *home_dir)
   if (err)
     goto leave;
 
-  /* We need to know the fd used by assuan for reads.  We do this by
-     using the assumption that the first returned fd from
-     assuan_get_active_fds() is always this one.  */
-  nfds = assuan_get_active_fds (gpgsm->assuan_ctx, 0 /* read fds */,
-                                fdlist, DIM (fdlist));
-  if (nfds < 1)
-    {
-      err = gpg_error (GPG_ERR_GENERAL);	/* FIXME */
-      goto leave;
-    }
-  /* We duplicate the file descriptor, so we can close it without
-     disturbing assuan.  Alternatively, we could special case
-     status_fd and register/unregister it manually as needed, but this
-     increases code duplication and is more complicated as we can not
-     use the close notifications etc.  */
-  gpgsm->status_cb.fd = dup (fdlist[0]);
-  if (gpgsm->status_cb.fd < 0)
-    {
-      err = gpg_error (GPG_ERR_GENERAL);	/* FIXME */
-      goto leave;
-    }
-  gpgsm->status_cb.dir = 1;
-  gpgsm->status_cb.data = gpgsm;
-
   err = _gpgme_getenv ("DISPLAY", &dft_display);
   if (err)
     goto leave;
@@ -518,14 +494,6 @@ gpgsm_new (void **engine, const char *file_name, const char *home_dir)
 	}
     }
 
-  if (!err
-      && (_gpgme_io_set_close_notify (gpgsm->status_cb.fd,
-				      close_notify_handler, gpgsm)))
-    {
-      err = gpg_error (GPG_ERR_GENERAL);
-      goto leave;
-    }
-
 #if !USE_DESCRIPTOR_PASSING
   if (!err
       && (_gpgme_io_set_close_notify (gpgsm->input_cb.fd,
@@ -997,6 +965,33 @@ static gpgme_error_t
 start (engine_gpgsm_t gpgsm, const char *command)
 {
   gpgme_error_t err;
+  int fdlist[5];
+  int nfds;
+
+  /* We need to know the fd used by assuan for reads.  We do this by
+     using the assumption that the first returned fd from
+     assuan_get_active_fds() is always this one.  */
+  nfds = assuan_get_active_fds (gpgsm->assuan_ctx, 0 /* read fds */,
+                                fdlist, DIM (fdlist));
+  if (nfds < 1)
+    return gpg_error (GPG_ERR_GENERAL);	/* FIXME */
+
+  /* We duplicate the file descriptor, so we can close it without
+     disturbing assuan.  Alternatively, we could special case
+     status_fd and register/unregister it manually as needed, but this
+     increases code duplication and is more complicated as we can not
+     use the close notifications etc.  */
+  gpgsm->status_cb.fd = dup (fdlist[0]);
+  if (gpgsm->status_cb.fd < 0)
+    return gpg_error_from_syserror ();
+
+  if (_gpgme_io_set_close_notify (gpgsm->status_cb.fd,
+				  close_notify_handler, gpgsm))
+    {
+      close (gpgsm->status_cb.fd);
+      gpgsm->status_cb.fd = -1;
+      return gpg_error (GPG_ERR_GENERAL);
+    }
 
   err = add_io_cb (gpgsm, &gpgsm->status_cb, status_handler);
   if (!err && gpgsm->input_cb.fd != -1)
@@ -1016,6 +1011,19 @@ start (engine_gpgsm_t gpgsm, const char *command)
 }
 
 
+#if USE_DESCRIPTOR_PASSING
+static gpgme_error_t
+gpgsm_reset (void *engine)
+{
+  engine_gpgsm_t gpgsm = engine;
+
+  /* We must send a reset because we need to reset the list of
+     signers.  Note that RESET does not reset OPTION commands. */
+  return gpgsm_assuan_simple_command (gpgsm->assuan_ctx, "RESET", NULL, NULL);
+}
+#endif
+
+
 static gpgme_error_t
 gpgsm_decrypt (void *engine, gpgme_data_t ciph, gpgme_data_t plain)
 {
@@ -1385,6 +1393,7 @@ gpgsm_keylist (void *engine, const char *pattern, int secret_only,
   if (!pattern)
     pattern = "";
 
+  /* Always send list-mode option because RESET does not reset it.  */
   if (asprintf (&line, "OPTION list-mode=%d", (list_mode & 3)) < 0)
     return gpg_error_from_errno (errno);
   err = gpgsm_assuan_simple_command (gpgsm->assuan_ctx, line, NULL, NULL);
@@ -1393,6 +1402,8 @@ gpgsm_keylist (void *engine, const char *pattern, int secret_only,
     return err;
 
 
+  /* Always send key validation because RESET does not reset it.  */
+
   /* Use the validation mode if required.  We don't check for an error
      yet because this is a pretty fresh gpgsm features. */
   gpgsm_assuan_simple_command (gpgsm->assuan_ctx, 
@@ -1448,6 +1459,7 @@ gpgsm_keylist_ext (void *engine, const char *pattern[], int secret_only,
   if (mode & GPGME_KEYLIST_MODE_EXTERN)
     list_mode |= 2;
 
+  /* Always send list-mode option because RESET does not reset it.  */
   if (asprintf (&line, "OPTION list-mode=%d", (list_mode & 3)) < 0)
     return gpg_error_from_errno (errno);
   err = gpgsm_assuan_simple_command (gpgsm->assuan_ctx, line, NULL, NULL);
@@ -1455,6 +1467,7 @@ gpgsm_keylist_ext (void *engine, const char *pattern[], int secret_only,
   if (err)
     return err;
 
+  /* Always send key validation because RESET does not reset it.  */
   /* Use the validation mode if required.  We don't check for an error
      yet because this is a pretty fresh gpgsm features. */
   gpgsm_assuan_simple_command (gpgsm->assuan_ctx, 
@@ -1561,12 +1574,8 @@ gpgsm_sign (void *engine, gpgme_data_t in, gpgme_data_t out,
   if (!gpgsm)
     return gpg_error (GPG_ERR_INV_VALUE);
 
-  /* We must send a reset because we need to reset the list of
+  /* FIXME: This does not work as RESET does not reset it so we can't
-     signers.  Note that RESET does not reset OPTION commands. */
+     revert back to default.  */
-  err = gpgsm_assuan_simple_command (gpgsm->assuan_ctx, "RESET", NULL, NULL);
-  if (err)
-    return err;
-
   if (include_certs != GPGME_INCLUDE_CERTS_DEFAULT)
     {
       /* FIXME: Make sure that if we run multiple operations, that we
@@ -1704,6 +1713,11 @@ struct engine_ops _gpgme_engine_ops_gpgsm =
 
     /* Member functions.  */
     gpgsm_release,
+#if USE_DESCRIPTOR_PASSING
+    gpgsm_reset,
+#else
+    NULL,			/* reset */
+#endif
     gpgsm_set_status_handler,
     NULL,		/* set_command_handler */
     gpgsm_set_colon_line_handler,

gpgme/engine.c

@@ -420,6 +420,19 @@ _gpgme_engine_new (gpgme_engine_info_t info, engine_t *r_engine)
 }
 
 
+gpgme_error_t
+_gpgme_engine_reset (engine_t engine)
+{
+  if (!engine)
+    return gpg_error (GPG_ERR_INV_VALUE);
+
+  if (!engine->ops->reset)
+    return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
+
+  return (*engine->ops->reset) (engine->engine);
+}
+
+
 void
 _gpgme_engine_release (engine_t engine)
 {

gpgme/engine.h

@@ -52,6 +52,7 @@ gpgme_error_t _gpgme_set_engine_info (gpgme_engine_info_t info,
 
 gpgme_error_t _gpgme_engine_new (gpgme_engine_info_t info,
 				 engine_t *r_engine);
+gpgme_error_t _gpgme_engine_reset (engine_t engine);
 
 gpgme_error_t _gpgme_engine_set_locale (engine_t engine, int category,
 					const char *value);

gpgme/gpgme.c

@@ -159,7 +159,17 @@ gpgme_set_protocol (gpgme_ctx_t ctx, gpgme_protocol_t protocol)
   if (protocol != GPGME_PROTOCOL_OpenPGP && protocol != GPGME_PROTOCOL_CMS)
     return gpg_error (GPG_ERR_INV_VALUE);
 
+  if (ctx->protocol != protocol)
+    {
+      /* Shut down the engine when switching protocols.  */
+      if (ctx->engine)
+	{
+	  _gpgme_engine_release (ctx->engine);
+	  ctx->engine = NULL;
+	}
+
       ctx->protocol = protocol;
+    }
   return 0;
 }
 
@@ -417,8 +427,12 @@ gpgme_error_t
 gpgme_ctx_set_engine_info (gpgme_ctx_t ctx, gpgme_protocol_t proto,
 			   const char *file_name, const char *home_dir)
 {
-  /* FIXME: Make sure to reset the context if we are running in daemon
+  /* Shut down the engine when changing engine info.  */
-     mode.  */
+  if (ctx->engine)
+    {
+      _gpgme_engine_release (ctx->engine);
+      ctx->engine = NULL;
+    }
   return _gpgme_set_engine_info (ctx->engine_info, proto,
 				 file_name, home_dir);
 }

gpgme/gpgme.h

@@ -72,7 +72,7 @@ extern "C" {
    AM_PATH_GPGME macro) check that this header matches the installed
    library.  Warning: Do not edit the next line.  configure will do
    that for you!  */
-#define GPGME_VERSION "1.1.3-cvs1188"
+#define GPGME_VERSION "1.1.3-cvs1196"
 
 
 

gpgme/op-support.c

@@ -68,9 +68,25 @@ gpgme_error_t
 _gpgme_op_reset (gpgme_ctx_t ctx, int type)
 {
   gpgme_error_t err = 0;
-  gpgme_engine_info_t info;
   struct gpgme_io_cbs io_cbs;
 
+  _gpgme_release_result (ctx);
+
+  if (ctx->engine)
+    {
+      /* Attempt to reset an existing engine.  */
+
+      err = _gpgme_engine_reset (ctx->engine);
+      if (gpg_err_code (err) == GPG_ERR_NOT_IMPLEMENTED)
+	{
+	  _gpgme_engine_release (ctx->engine);
+	  ctx->engine = NULL;
+	}
+    }
+
+  if (!ctx->engine)
+    {
+      gpgme_engine_info_t info;
       info = ctx->engine_info;
       while (info && info->protocol != ctx->protocol)
 	info = info->next;
@@ -78,18 +94,11 @@ _gpgme_op_reset (gpgme_ctx_t ctx, int type)
       if (!info)
 	return gpg_error (GPG_ERR_UNSUPPORTED_PROTOCOL);
 
-  _gpgme_release_result (ctx);
-
-  if (ctx->engine)
-    {
-      _gpgme_engine_release (ctx->engine);
-      ctx->engine = NULL;
-    }
-
       /* Create an engine object.  */
       err = _gpgme_engine_new (info, &ctx->engine);
       if (err)
 	return err;
+    }
 
   err = _gpgme_engine_set_locale (ctx->engine, LC_CTYPE, ctx->lc_ctype);
   if (!err)

gpgme/posix-io.c

@@ -412,3 +412,86 @@ _gpgme_io_select (struct io_select_fd_s *fds, size_t nfds, int nonblock)
     }
   return count;
 }
+
+
+int
+_gpgme_io_recvmsg (int fd, struct msghdr *msg, int flags)
+{
+  int nread;
+  int saved_errno;
+  struct iovec *iov;
+
+  nread = 0;
+  iov = msg->msg_iov;
+  while (iov < msg->msg_iov + msg->msg_iovlen)
+    {
+      nread += iov->iov_len;
+      iov++;
+    }
+  
+  DEBUG2 ("fd %d: about to receive %d bytes\n",
+	  fd, (int) nread);
+  do
+    {
+      nread = _gpgme_ath_recvmsg (fd, msg, flags);
+    }
+  while (nread == -1 && errno == EINTR);
+  saved_errno = errno;
+  DEBUG2 ("fd %d: got %d bytes\n", fd, nread);
+  if (nread > 0)
+    {
+      int nr = nread;
+
+      iov = msg->msg_iov;
+      while (nr > 0)
+	{
+	  int len = nr > iov->iov_len ? iov->iov_len : nr;
+	  _gpgme_debug (2, "fd %d: got `%.*s'\n", fd, len,
+			msg->msg_iov->iov_base);
+	  iov++;
+	  nr -= len;
+	}
+    }
+  errno = saved_errno;
+  return nread;
+}
+
+
+int
+_gpgme_io_sendmsg (int fd, const struct msghdr *msg, int flags)
+{
+  int saved_errno;
+  int nwritten;
+  struct iovec *iov;
+
+  nwritten = 0;
+  iov = msg->msg_iov;
+  while (iov < msg->msg_iov + msg->msg_iovlen)
+    {
+      nwritten += iov->iov_len;
+      iov++;
+    }
+
+  DEBUG2 ("fd %d: about to write %d bytes\n", fd, (int) nwritten);
+  iov = msg->msg_iov;
+  while (nwritten > 0)
+    {
+      int len = nwritten > iov->iov_len ? iov->iov_len : nwritten;
+      _gpgme_debug (2, "fd %d: write `%.*s'\n", fd, len,
+		    msg->msg_iov->iov_base);
+      iov++;
+      nwritten -= len;
+    }
+
+  do
+    {
+      nwritten = _gpgme_ath_sendmsg (fd, msg, flags);
+    }
+  while (nwritten == -1 && errno == EINTR);
+  saved_errno = errno;
+  DEBUG2 ("fd %d:          wrote %d bytes\n", fd, (int) nwritten);
+  errno = saved_errno;
+  return nwritten;
+}
+
+

gpgme/rungpg.c

@@ -2078,6 +2078,7 @@ struct engine_ops _gpgme_engine_ops_gpg =
 
     /* Member functions.  */
     gpg_release,
+    NULL,				/* reset */
     gpg_set_status_handler,
     gpg_set_command_handler,
     gpg_set_colon_line_handler,