Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 231 insertions, 0 deletions

diff --git a/libkdenetwork/libgpgme-copy/gpgme/version.c b/libkdenetwork/libgpgme-copy/gpgme/version.c
new file mode 100644
index 000000000..a54c0d4da
--- /dev/null
+++ b/libkdenetwork/libgpgme-copy/gpgme/version.c
@@ -0,0 +1,231 @@
+/* version.c - Version check routines.
+   Copyright (C) 2000 Werner Koch (dd9jn)
+   Copyright (C) 2001, 2002, 2003, 2004, 2005 g10 Code GmbH
+ 
+   This file is part of GPGME.
+ 
+   GPGME is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+   
+   GPGME 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
+   Lesser General Public License for more details.
+   
+   You should have received a copy of the GNU Lesser 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.  */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <string.h>
+#include <limits.h>
+#include <ctype.h>
+
+#include "gpgme.h"
+#include "priv-io.h"
+
+/* For _gpgme_sema_subsystem_init ().  */
+#include "sema.h"
+
+#ifdef HAVE_ASSUAN_H
+#include "assuan.h"
+#endif
+
+
+/* Bootstrap the subsystems needed for concurrent operation.  This
+   must be done once at startup.  We can not guarantee this using a
+   lock, though, because the semaphore subsystem needs to be
+   initialized itself before it can be used.  So we expect that the
+   user performs the necessary syncrhonization.  */
+static void
+do_subsystem_inits (void)
+{
+  static int done = 0;
+
+  if (done)
+    return;
+
+  _gpgme_sema_subsystem_init ();
+  _gpgme_io_subsystem_init ();
+#ifdef HAVE_ASSUAN_H
+  assuan_set_assuan_err_source (GPG_ERR_SOURCE_GPGME);
+#endif
+
+  done = 1;
+}
+
+
+/* Read the next number in the version string STR and return it in
+   *NUMBER.  Return a pointer to the tail of STR after parsing, or
+   *NULL if the version string was invalid.  */
+static const char *
+parse_version_number (const char *str, int *number)
+{
+#define MAXVAL ((INT_MAX - 10) / 10)
+  int val = 0;
+
+  /* Leading zeros are not allowed.  */
+  if (*str == '0' && isdigit(str[1]))
+    return NULL;
+
+  while (isdigit (*str) && val <= MAXVAL)
+    {
+      val *= 10;
+      val += *(str++) - '0';
+    }
+  *number = val;
+  return val > MAXVAL ? NULL : str;
+}
+
+
+/* Parse the version string STR in the format MAJOR.MINOR.MICRO (for
+   example, 9.3.2) and return the components in MAJOR, MINOR and MICRO
+   as integers.  The function returns the tail of the string that
+   follows the version number.  This might be te empty string if there
+   is nothing following the version number, or a patchlevel.  The
+   function returns NULL if the version string is not valid.  */
+static const char *
+parse_version_string (const char *str, int *major, int *minor, int *micro)
+{
+  str = parse_version_number (str, major);
+  if (!str || *str != '.')
+    return NULL;
+  str++;
+
+  str = parse_version_number (str, minor);
+  if (!str || *str != '.')
+    return NULL;
+  str++;
+
+  str = parse_version_number (str, micro);
+  if (!str)
+    return NULL;
+
+  /* A patchlevel might follow.  */
+  return str;
+}
+
+
+/* Return true if MY_VERSION is at least REQ_VERSION, and false
+   otherwise.  */
+int
+_gpgme_compare_versions (const char *my_version,
+			 const char *rq_version)
+{
+  int my_major, my_minor, my_micro;
+  int rq_major, rq_minor, rq_micro;
+  const char *my_plvl, *rq_plvl;
+
+  if (!rq_version)
+    return 1;
+  if (!my_version)
+    return 0;
+
+  my_plvl = parse_version_string (my_version, &my_major, &my_minor, &my_micro);
+  if (!my_plvl)
+    return 0;
+
+  rq_plvl = parse_version_string (rq_version, &rq_major, &rq_minor, &rq_micro);
+  if (!rq_plvl)
+    return 0;
+
+  if (my_major > rq_major
+      || (my_major == rq_major && my_minor > rq_minor)
+      || (my_major == rq_major && my_minor == rq_minor 
+	  && my_micro > rq_micro)
+      || (my_major == rq_major && my_minor == rq_minor
+	  && my_micro == rq_micro && strcmp (my_plvl, rq_plvl) >= 0))
+    return 1;
+
+  return 0;
+}
+
+
+/* Check that the the version of the library is at minimum the
+   requested one and return the version string; return NULL if the
+   condition is not met.  If a NULL is passed to this function, no
+   check is done and the version string is simply returned.
+
+   This function must be run once at startup, as it also initializes
+   some subsystems.  Its invocation must be synchronized against
+   calling any of the other functions in a multi-threaded
+   environments.  */
+const char *
+gpgme_check_version (const char *req_version)
+{
+  do_subsystem_inits ();
+  return _gpgme_compare_versions (VERSION, req_version) ? VERSION : NULL;
+}
+
+
+#define LINELENGTH 80
+
+/* Retrieve the version number from the --version output of the
+   program FILE_NAME.  */
+char *
+_gpgme_get_program_version (const char *const file_name)
+{
+  char line[LINELENGTH] = "";
+  int linelen = 0;
+  char *mark = NULL;
+  int rp[2];
+  int nread;
+  char *argv[] = {NULL /* file_name */, "--version", 0};
+  struct spawn_fd_item_s pfd[] = { {0, -1}, {-1, -1} };
+  struct spawn_fd_item_s cfd[] = { {-1, 1 /* STDOUT_FILENO */}, {-1, -1} };
+  int status;
+
+  if (!file_name)
+    return NULL;
+  argv[0] = (char *) file_name;
+
+  if (_gpgme_io_pipe (rp, 1) < 0)
+    return NULL;
+
+  pfd[0].fd = rp[1];
+  cfd[0].fd = rp[1];
+
+  status = _gpgme_io_spawn (file_name, argv, cfd, pfd);
+  if (status < 0)
+    {
+      _gpgme_io_close (rp[0]);
+      _gpgme_io_close (rp[1]);
+      return NULL;
+    }
+
+  do
+    {
+      nread = _gpgme_io_read (rp[0], &line[linelen], LINELENGTH - linelen - 1);
+      if (nread > 0)
+	{
+	  line[linelen + nread] = '\0';
+	  mark = strchr (&line[linelen], '\n');
+	  if (mark)
+	    {
+	      if (mark > &line[0] && *mark == '\r')
+		mark--;
+	      *mark = '\0';
+	      break;
+	    }
+	  linelen += nread;
+	}
+    }
+  while (nread > 0 && linelen < LINELENGTH - 1);
+
+  _gpgme_io_close (rp[0]);
+
+  if (mark)
+    {
+      mark = strrchr (line, ' ');
+      if (!mark)
+	return NULL;
+      return strdup (mark + 1);
+    }
+
+  return NULL;
+}