gpg,gpgsm: New option --disable-fd-translation.

* common/sysutils.c (no_translate_sys2libc_fd) [W32]: New global.
(disable_translate_sys2libc_fd): New.
(translate_sys2libc_fd): Make static and cobuild only for Windows.
(translate_sys2libc_fd_int): Use no_translate_sys2libc_fd flag.

* g10/gpg.c, sm/gpgsm.c (oDisableFdTranslation): New const.
(opts): Add option "disable-fd-translation".
(main): Set option.
--

GnuPG-bug-id: 7060

common/sysutils.c

@@ -113,6 +113,8 @@ static int allow_special_filenames;
 #ifdef HAVE_W32_SYSTEM
 /* State of gnupg_inhibit_set_foregound_window.  */
 static int inhibit_set_foregound_window;
+/* Disable the use of _open_osfhandle.  */
+static int no_translate_sys2libc_fd;
 #endif
 
 
@@ -351,6 +353,16 @@ enable_special_filenames (void)
 }
 
 
+/* Disable the use use of _open_osfhandle on Windows.  */
+void
+disable_translate_sys2libc_fd (void)
+{
+#ifdef HAVE_W32_SYSTEM
+  no_translate_sys2libc_fd = 1;
+#endif
+}
+
+
 /* Return a string which is used as a kind of process ID.  */
 const byte *
 get_session_marker (size_t *rlen)
@@ -537,10 +549,10 @@ gnupg_usleep (unsigned int usecs)
    different from the libc file descriptors (like open). This function
    translates system file handles to libc file handles.  FOR_WRITE
    gives the direction of the handle.  */
-int
+#if defined(HAVE_W32_SYSTEM)
+static int
 translate_sys2libc_fd (gnupg_fd_t fd, int for_write)
 {
-#if defined(HAVE_W32_SYSTEM)
   int x;
 
   if (fd == GNUPG_INVALID_FD)
@@ -552,11 +564,9 @@ translate_sys2libc_fd (gnupg_fd_t fd, int for_write)
   if (x == -1)
     log_error ("failed to translate osfhandle %p\n", (void *) fd);
   return x;
-#else /*!HAVE_W32_SYSTEM */
-  (void)for_write;
-  return fd;
-#endif
 }
+#endif /*!HAVE_W32_SYSTEM */
+
 
 /* This is the same as translate_sys2libc_fd but takes an integer
    which is assumed to be such an system handle.   */
@@ -564,7 +574,7 @@ int
 translate_sys2libc_fd_int (int fd, int for_write)
 {
 #ifdef HAVE_W32_SYSTEM
-  if (fd <= 2)
+  if (fd <= 2 || no_translate_sys2libc_fd)
     return fd;	/* Do not do this for stdin, stdout, and stderr.  */
 
   return translate_sys2libc_fd ((void*)(intptr_t)fd, for_write);

common/sysutils.h

@@ -75,12 +75,13 @@ void trap_unaligned (void);
 int  disable_core_dumps (void);
 int  enable_core_dumps (void);
 void enable_special_filenames (void);
+void disable_translate_sys2libc_fd (void);
+
 const unsigned char *get_session_marker (size_t *rlen);
 unsigned int get_uint_nonce (void);
 /*int check_permissions (const char *path,int extension,int checkonly);*/
 void gnupg_sleep (unsigned int seconds);
 void gnupg_usleep (unsigned int usecs);
-int translate_sys2libc_fd (gnupg_fd_t fd, int for_write);
 int translate_sys2libc_fd_int (int fd, int for_write);
 gpg_error_t gnupg_parse_fdstr (const char *fdstr, es_syshd_t *r_syshd);
 int check_special_filename (const char *fname, int for_write, int notranslate);

doc/gpg.texi

@@ -3856,6 +3856,12 @@ This option enables a mode in which filenames of the form
 @file{-&n}, where n is a non-negative decimal number,
 refer to the file descriptor n and not to a file with that name.
 
+@item --disable-fd-translation
+@opindex disable-fd-translation
+This option changes the behaviour for all following options to expect
+libc file descriptors instead of HANDLE values on the command line.
+The option has an effect only on Windows.
+
 @item --no-expensive-trust-checks
 @opindex no-expensive-trust-checks
 Experimental use only.

doc/gpgsm.texi

@@ -770,6 +770,18 @@ list of flag names and are OR-ed together.  The special flag "none"
 clears the list and allows one to start over with an empty list.  To get a
 list of available flags the sole word "help" can be used.
 
+@item --enable-special-filenames
+@opindex enable-special-filenames
+This option enables a mode in which filenames of the form
+@file{-&n}, where n is a non-negative decimal number,
+refer to the file descriptor n and not to a file with that name.
+
+@item --disable-fd-translation
+@opindex disable-fd-translation
+This option changes the behaviour for all following options to expect
+libc file descriptors instead of HANDLE values on the command line.
+The option has an effect only on Windows.
+
 @item --debug-level @var{level}
 @opindex debug-level
 Select the debug level for investigating problems. @var{level} may be

g10/gpg.c

@@ -354,6 +354,7 @@ enum cmd_and_opt_values
     oAllowSecretKeyImport,
     oAllowOldCipherAlgos,
     oEnableSpecialFilenames,
+    oDisableFdTranslation,
     oNoLiteral,
     oSetFilesize,
     oHonorHttpProxy,
@@ -880,7 +881,6 @@ static gpgrt_opt_t opts[] = {
   ARGPARSE_s_n (oAllowOldCipherAlgos, "allow-old-cipher-algos", "@"),
   ARGPARSE_s_s (oWeakDigest, "weak-digest","@"),
   ARGPARSE_s_s (oVerifyOptions, "verify-options", "@"),
-  ARGPARSE_s_n (oEnableSpecialFilenames, "enable-special-filenames", "@"),
   ARGPARSE_s_n (oNoRandomSeedFile,  "no-random-seed-file", "@"),
   ARGPARSE_s_n (oNoSigCache,         "no-sig-cache", "@"),
   ARGPARSE_s_n (oIgnoreTimeConflict, "ignore-time-conflict", "@"),
@@ -912,6 +912,8 @@ static gpgrt_opt_t opts[] = {
   ARGPARSE_s_i (oPassphraseRepeat,"passphrase-repeat", "@"),
   ARGPARSE_s_s (oPinentryMode,    "pinentry-mode", "@"),
   ARGPARSE_s_n (oForceSignKey,    "force-sign-key", "@"),
+  ARGPARSE_s_n (oEnableSpecialFilenames, "enable-special-filenames", "@"),
+  ARGPARSE_s_n (oDisableFdTranslation, "disable-fd-translation", "@"),
 
   ARGPARSE_header (NULL, N_("Other options")),
 
@@ -3563,6 +3565,10 @@ main (int argc, char **argv)
             enable_special_filenames ();
             break;
 
+          case oDisableFdTranslation:
+            disable_translate_sys2libc_fd ();
+            break;
+
           case oNoExpensiveTrustChecks: opt.no_expensive_trust_checks=1; break;
           case oAutoCheckTrustDB: opt.no_auto_check_trustdb=0; break;
           case oNoAutoCheckTrustDB: opt.no_auto_check_trustdb=1; break;

sm/gpgsm.c

@@ -117,6 +117,7 @@ enum cmd_and_opt_values {
   oLogTime,
 
   oEnableSpecialFilenames,
+  oDisableFdTranslation,
 
   oAgentProgram,
   oDisplay,
@@ -428,6 +429,7 @@ static gpgrt_opt_t opts[] = {
   ARGPARSE_s_n (oAnswerNo,  "no",  N_("assume no on most questions")),
   ARGPARSE_s_i (oStatusFD, "status-fd", N_("|FD|write status info to this FD")),
   ARGPARSE_s_n (oEnableSpecialFilenames, "enable-special-filenames", "@"),
+  ARGPARSE_s_n (oDisableFdTranslation, "disable-fd-translation", "@"),
   ARGPARSE_s_i (oPassphraseFD,    "passphrase-fd", "@"),
   ARGPARSE_s_s (oPinentryMode,    "pinentry-mode", "@"),
 
@@ -1461,6 +1463,10 @@ main ( int argc, char **argv)
           enable_special_filenames ();
           break;
 
+        case oDisableFdTranslation:
+          disable_translate_sys2libc_fd ();
+          break;
+
         case oValidationModel: parse_validation_model (pargs.r.ret_str); break;
 
 	case oKeyServer: