build: move wrappers into platform module

+ Some fixups within the platform.c functions.
- need to check environment set on Windows.

Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
Acked-by: Gert Doering <gert@greenie.muc.de>
Signed-off-by: David Sommerseth <davids@redhat.com>

1 files changed, 142 insertions, 0 deletions

diff --git a/src/openvpn/platform.h b/src/openvpn/platform.h
new file mode 100644
index 0000000..7bd2067
--- /dev/null
+++ b/src/openvpn/platform.h
@@ -0,0 +1,142 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single TCP/UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef PLATFORM_H
+#define PLATFORM_H
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif
+
+#ifdef HAVE_GRP_H
+#include <grp.h>
+#endif
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif
+
+#include "basic.h"
+
+/* Get/Set UID of process */
+
+struct platform_state_user {
+#if defined(HAVE_GETPWNAM) && defined(HAVE_SETUID)
+  const char *username;
+  struct passwd *pw;
+#else
+  int dummy;
+#endif
+};
+
+/* Get/Set GID of process */
+
+struct platform_state_group {
+#if defined(HAVE_GETGRNAM) && defined(HAVE_SETGID)
+  const char *groupname;
+  struct group *gr;
+#else
+  int dummy;
+#endif
+};
+
+bool platform_user_get (const char *username, struct platform_state_user *state);
+void platform_user_set (const struct platform_state_user *state);
+
+bool platform_group_get (const char *groupname, struct platform_state_group *state);
+void platform_group_set (const struct platform_state_group *state);
+
+/*
+ * Extract UID or GID
+ */
+
+static inline int
+platform_state_user_uid (const struct platform_state_user *s)
+{
+#if defined(HAVE_GETPWNAM) && defined(HAVE_SETUID)
+  if (s->pw)
+    return s->pw->pw_uid;
+#endif
+  return -1;
+}
+
+static inline int
+platform_state_group_gid (const struct platform_state_group *s)
+{
+#if defined(HAVE_GETGRNAM) && defined(HAVE_SETGID)
+  if (s->gr)
+    return s->gr->gr_gid;
+#endif
+  return -1;
+}
+
+void platform_chroot (const char *path);
+
+void platform_nice (int niceval);
+
+unsigned int platform_getpid (void);
+
+void platform_mlockall (bool print_msg); /* Disable paging */
+
+int platform_chdir (const char* dir);
+
+/* interpret the status code returned by system()/execve() */
+bool platform_system_ok (int stat);
+bool platform_system_executed (int stat);
+int platform_system(const char *command);
+
+int platform_access (const char *path, int mode);
+
+void platform_sleep_milliseconds (unsigned int n);
+
+void platform_sleep_until_signal (void);
+
+/* delete a file, return true if succeeded */
+bool platform_unlink (const char *filename);
+
+int platform_putenv (char *string);
+
+FILE *platform_fopen (const char *path, const char *mode);
+int platform_open (const char *path, int flags, int mode);
+
+#ifdef WIN32
+typedef struct _stat platform_stat_t;
+#else
+typedef struct stat platform_stat_t;
+#endif
+int platform_stat (const char *path, platform_stat_t *buf);
+
+#endif