Add libotr/etc sources

1 files changed, 246 insertions, 0 deletions

diff --git a/libotr/libgpg-error-1.42/src/version.c b/libotr/libgpg-error-1.42/src/version.c
new file mode 100644
index 0000000..276ee04
--- /dev/null
+++ b/libotr/libgpg-error-1.42/src/version.c
@@ -0,0 +1,246 @@
+/* version.c - Version checking
+ * Copyright (C) 2001, 2002, 2012, 2013, 2014 g10 Code GmbH
+ *
+ * This file is part of libgpg-error.
+ *
+ * libgpg-error 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.
+ *
+ * libgpg-error 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <gpg-error.h>
+
+
+#define digitp(a) ((a) >= '0' && (a) <= '9')
+
+
+/* This is actually a dummy function to make sure that is module is
+   not empty.  Some compilers barf on empty modules.  */
+static const char *
+cright_blurb (void)
+{
+  static const char blurb[] =
+    "\n\n"
+    "This is Libgpg-error " PACKAGE_VERSION " - A runtime library\n"
+    "Copyright 2001-2020 g10 Code GmbH\n"
+    "\n"
+    "(" BUILD_REVISION " " BUILD_TIMESTAMP ")\n"
+    "\n\n";
+  return blurb;
+}
+
+
+/* This function parses the first portion of the version number S and
+ * stores it at NUMBER.  On success, this function returns a pointer
+ * into S starting with the first character, which is not part of the
+ * initial number portion; on failure, NULL is returned.  */
+static const char*
+parse_version_number (const char *s, int *number)
+{
+  int val = 0;
+
+  if (*s == '0' && digitp (s[1]))
+    return NULL;  /* Leading zeros are not allowed.  */
+  for (; digitp (*s); s++)
+    {
+      val *= 10;
+      val += *s - '0';
+    }
+  *number = val;
+  return val < 0 ? NULL : s;
+}
+
+
+/* This function breaks up the complete string-representation of the
+ * version number S, which is of the following struture: <major
+ * number>.<minor number>.<micro number><patch level>.  The major,
+ * minor and micro number components will be stored in *MAJOR, *MINOR
+ * and *MICRO.  If MINOR or MICRO is NULL the version number is
+ * assumed to have just 1 respective 2 parts.
+ *
+ * On success, the last component, the patch level, will be returned;
+ * in failure, NULL will be returned.  */
+static const char *
+parse_version_string (const char *s, int *major, int *minor, int *micro)
+{
+  s = parse_version_number (s, major);
+  if (!s)
+    return NULL;
+  if (!minor)
+    {
+      if (*s == '.')
+        s++;
+    }
+  else
+    {
+      if (*s != '.')
+        return NULL;
+      s++;
+      s = parse_version_number (s, minor);
+      if (!s)
+        return NULL;
+      if (!micro)
+        {
+          if (*s == '.')
+            s++;
+        }
+      else
+        {
+          if (*s != '.')
+            return NULL;
+          s++;
+          s = parse_version_number (s, micro);
+          if (!s)
+            return NULL;
+        }
+    }
+  return s; /* patchlevel */
+}
+
+
+/* Helper for _gpgrt_cmp_version.  */
+static int
+do_cmp_version (const char *a, const char *b, int level)
+{
+  int a_major, a_minor, a_micro;
+  int b_major, b_minor, b_micro;
+  const char *a_plvl, *b_plvl;
+  int r;
+  int ignore_plvl;
+  int positive, negative;
+
+  if (level < 0)
+    {
+      positive = -1;
+      negative = 1;
+      level = 0 - level;
+    }
+  else
+    {
+      positive = 1;
+      negative = -1;
+    }
+  if ((ignore_plvl = (level > 9)))
+    level %= 10;
+
+  a_major = a_minor = a_micro = 0;
+  a_plvl = parse_version_string (a, &a_major,
+                                 level > 1? &a_minor : NULL,
+                                 level > 2? &a_micro : NULL);
+  if (!a_plvl)
+    a_major = a_minor = a_micro = 0; /* Error.  */
+
+  b_major = b_minor = b_micro = 0;
+  b_plvl = parse_version_string (b, &b_major,
+                                 level > 1? &b_minor : NULL,
+                                 level > 2? &b_micro : NULL);
+  if (!b_plvl)
+    b_major = b_minor = b_micro = 0;
+
+  if (!ignore_plvl)
+    {
+      if (!a_plvl && !b_plvl)
+        return negative;  /* Put invalid strings at the end.  */
+      if (a_plvl && !b_plvl)
+        return positive;
+      if (!a_plvl && b_plvl)
+        return negative;
+    }
+
+  if (a_major > b_major)
+    return positive;
+  if (a_major < b_major)
+    return negative;
+
+  if (a_minor > b_minor)
+    return positive;
+  if (a_minor < b_minor)
+    return negative;
+
+  if (a_micro > b_micro)
+    return positive;
+  if (a_micro < b_micro)
+    return negative;
+
+  if (ignore_plvl)
+    return 0;
+
+  for (; *a_plvl && *b_plvl; a_plvl++, b_plvl++)
+    {
+      if (*a_plvl == '.' && *b_plvl == '.')
+        {
+          r = strcmp (a_plvl, b_plvl);
+          if (!r)
+            return 0;
+          else if ( r > 0 )
+            return positive;
+          else
+            return negative;
+        }
+      else if (*a_plvl == '.')
+        return negative; /* B is larger. */
+      else if (*b_plvl == '.')
+        return positive; /* A is larger. */
+      else if (*a_plvl != *b_plvl)
+        break;
+        }
+  if (*a_plvl == *b_plvl)
+    return 0;
+  else if ((*(signed char *)a_plvl - *(signed char *)b_plvl) > 0)
+    return positive;
+  else
+    return negative;
+}
+
+
+/* Compare function for version strings.  The return value is
+ * like strcmp().  LEVEL may be
+ *   0 - reserved
+ *   1 - format is "<major><patchlevel>".
+ *   2 - format is "<major>.<minor><patchlevel>".
+ *   3 - format is "<major>.<minor>.<micro><patchlevel>".
+ * To ignore the patchlevel in the comparison add 10 to LEVEL.  To get
+ * a reverse sorting order use a negative number.
+ */
+int
+_gpgrt_cmp_version (const char *a, const char *b, int level)
+{
+  return do_cmp_version (a, b, level);
+}
+
+
+/*
+ * Check that the the version of the library is at minimum REQ_VERSION
+ * and return the actual version string; return NULL if the condition
+ * is not met.  If NULL is passed to this function, no check is done
+ * and the version string is simply returned.
+ */
+const char *
+_gpg_error_check_version (const char *req_version)
+{
+  const char *my_version = PACKAGE_VERSION;
+
+  if (req_version && req_version[0] == 1 && req_version[1] == 1)
+    return cright_blurb ();
+  if (!req_version)
+    return my_version;
+  return _gpgrt_cmp_version
+    (my_version, req_version, 12) >= 0 ? my_version : NULL;
+}