Urlader/urlader.c

/*
 * Copyright (c) 2012 Marc Alexander Lehmann <schmorp@schmorp.de>
 * 
 * Redistribution and use in source and binary forms, with or without modifica-
 * tion, are permitted provided that the following conditions are met:
 * 
 *   1.  Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 * 
 *   2.  Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License ("GPL") version 2 or any later version,
 * in which case the provisions of the GPL are applicable instead of
 * the above. If you wish to allow the use of your version of this file
 * only under the terms of the GPL and not to allow others to use your
 * version of this file under the BSD license, indicate your decision
 * by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL. If you do not delete the
 * provisions above, a recipient may use your version of this file under
 * either the BSD or the GPL.
 */

#include "urlib.h"
#include "urlib.c"

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <time.h>

#include "liblzf/lzf_d.c"

/* some simple? dynamic memory management for paths might save ltos of ram */
static u_handle pack_handle;
static u_handle lock_handle;
static char tmppath[MAX_PATH];

static int exe_argc;
static u_dynbuf exe_argv;
static u_dynbuf exe_args; /* actual arguments strings copied here */

static void
tmpdir (const char *dir)
{
  static int cnt;

  for (;;)
    {
//      #ifdef _WIN32
//        sprintf (tmppath, "%s/%x_%x.tmp", dir, (unsigned int)GetCurrentProcessId (), ++cnt);
//      #else
        sprintf (tmppath, "%s/t-%x_%x.tmp", dir, (unsigned int)getpid ()             , ++cnt);
//      #endif

      if (!u_mkdir (tmppath))
        return;
    }
}

static void
systemv (const char *const argv[])
{
#ifdef _WIN32
  _spawnv (P_WAIT, argv [0], argv);
#else
  pid_t pid = fork ();

  if (pid < 0)
    u_fatal ("fork failure");

  if (!pid)
    {
      execv (argv [0], (void *)argv);
      _exit (124);
    }

  int status;
  waitpid (pid, &status, 0);
#endif
}

static void
deltree (const char *path)
{
  #ifdef _WIN32
    char buf[MAX_PATH * 2 + 64];
    const char *argv[] = { getenv ("COMSPEC"), "/c", "rd", "/s", "/q", buf, 0 };
    sprintf (buf, "\"%s\"", path);
  #else
    const char *argv[] = { "/bin/rm", "-rf", path, 0 };
  #endif
  systemv (argv);
}

static char *pack_base, *pack_end;
static struct u_pack_tail *pack_tail;
static struct u_pack_hdr *pack_cur;
static char *scratch;
static unsigned int scratch_size;

#define PACK_NAME ((char *)(pack_cur + 1))
#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1)
#define PACK_VALID pack_cur->type

static void
pack_next (void)
{
  unsigned int d = u_32 (pack_cur->datalen);

  pack_cur = (struct u_pack_hdr *)(PACK_DATA + d);
}

static void
pack_unmap (void)
{
  if (pack_base)
    {
      u_munmap (pack_base, pack_end - pack_base);
      pack_base = 0;
    }

  if (scratch)
    {
      u_free (scratch, scratch_size);
      scratch = 0;
    }
}

static int
pack_map (void)
{
  char *addr;
  unsigned int size;

#ifdef _WIN32
  BY_HANDLE_FILE_INFORMATION fi;

  if (!GetFileInformationByHandle (pack_handle, &fi))
    return 0;

  size = fi.nFileSizeLow;
#else
  size = lseek (pack_handle, 0, SEEK_END);
#endif

  addr = u_mmap (pack_handle, size);
  if (!addr)
    return 0;

  /*pack_unmap ();*/

  pack_base = addr;
  pack_end  = pack_base + size;

  pack_tail = (void *)(pack_end - sizeof (*pack_tail));

  if (memcmp (pack_tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1))
    return 0;

  pack_cur = (struct u_pack_hdr *)(pack_end - u_32 (pack_tail->size));

  if (pack_cur->type != T_META)
    return 0;

  scratch = u_malloc (scratch_size = u_32 (pack_tail->max_uncompressed));
  if (!scratch)
    return 0;

  return 1;
}

static void
add_arg (char *arg, unsigned int len)
{
  char *addr = u_dynbuf_append (&exe_args,  arg, len);
  u_dynbuf_append (&exe_argv, &addr, sizeof (addr));
}

static void
load (void)
{
  strcpy (exe_id , PACK_NAME);
  strcpy (exe_ver, PACK_DATA);
  u_set_exe_info ();

  if (u_chdir (exe_dir))
    u_fatal ("unable to change to application data directory");

  u_handle h = u_open ("override");
  if (u_valid (h))
    {
      u_handle oh = pack_handle;

      pack_unmap ();
      pack_handle = h;

      if (pack_map ()
          && strcmp (exe_id , PACK_NAME) == 0
          && strcmp (exe_ver, PACK_DATA) <= 0)
        u_setenv ("URLADER_OVERRIDE", "override");
      else
        {
          pack_unmap ();
          pack_handle = oh;
          oh = h;
          pack_map ();
        }

      u_close (oh);
    }

  strcpy (exe_ver, PACK_DATA);
  u_set_exe_info ();
  pack_next ();

  for (;;)
    {
      if (pack_cur->type == T_ENV)
        u_setenv (PACK_NAME, PACK_DATA);
      else if (pack_cur->type == T_ARG)
        add_arg (PACK_NAME, u_16 (pack_cur->namelen) + 1);
      else
        break;

      pack_next ();
    }
 
done_env_arg:

  strcat (strcpy (tmppath, execdir), ".lck");
  lock_handle = u_lock (tmppath, 0, 1);
  if (!lock_handle)
    u_fatal ("unable to lock application instance");

  if (access (execdir, F_OK))
    {
      // does not exist yet, so unpack and move
      tmpdir (exe_dir);

      if (u_chdir (tmppath))
        u_fatal ("unable to change to new instance directory");

      for (;;)
        {
          switch (pack_cur->type)
            {
              case T_DIR:
                u_mkdir (PACK_NAME);
                break;

              case T_FILE:
                {
                  u_handle h = u_creat (PACK_NAME, pack_cur->flags & F_EXEC);
                  unsigned int dlen, len = u_32 (pack_cur->datalen);
                  char *data = PACK_DATA;

                  if (pack_cur->flags & F_LZF)
                    if (dlen = lzf_decompress (data, len, scratch, scratch_size))
                      {
                        data = scratch;
                        len  = dlen;
                      }
                    else
                      u_fatal ("unable to uncompress file data - pack corrupted?");

                  if (!u_valid (h))
                    u_fatal ("unable to unpack file from packfile - disk full?");

                  if (u_write (h, data, len) != len)
                    u_fatal ("unable to unpack file from packfile - disk full?");

                  u_fsync (h);
                  u_close (h);
                }
                break;

              case T_NULL:
                goto done;
            }

          pack_next ();
        }

done:
      if (u_chdir (datadir))
        u_fatal ("unable to change to data directory");

      u_sync ();

      if (u_rename (tmppath, execdir))
        deltree (tmppath); // if move fails, delete new, assume other process created it independently
    }

  pack_unmap ();
  u_close (pack_handle);

  if (u_chdir (execdir))
    u_fatal ("unable to change to application instance directory");

  u_setenv ("URLADER_VERSION", URLADER_VERSION);

#if 0
  // yes, this is overkill
  u_setenv ("SHLIB_PATH"        , execdir); // hpux
  u_setenv ("LIBPATH"           , execdir); // aix
  u_setenv ("LD_LIBRARY_PATH"   , execdir); // most elf systems
  u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris
  u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris
  u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix
  u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix
  u_setenv ("DYLD_LIBRARY_PATH" , execdir); // os sucks from apple
#endif
}

static void
execute (void)
{
  char *null = 0;
  u_dynbuf_append (&exe_argv, &null, sizeof (null));
  systemv ((const char *const *)exe_argv.addr);
}

// this argc/argv is without argv [0]
static void
doit (int argc, char *argv[])
{
  int i;

  u_setenv ("URLADER_CURRDIR", currdir);

  u_set_datadir ();
  u_mkdir (datadir);

  if (!pack_map ())
    u_fatal ("unable to map pack file - executable corrupted?");

  load ();

  while (argc--)
    {
      add_arg (*argv, strlen (*argv) + 1);
      ++argv;
    }

  execute ();
}

#ifdef _WIN32

int APIENTRY
WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show)
{
  if (!GetModuleFileName (hI, tmppath, sizeof (tmppath)))
    u_fatal ("unable to find executable pack");

  u_setenv ("URLADER_EXEPATH", tmppath);

  pack_handle = u_open (tmppath);
  if (!u_valid (pack_handle))
    u_fatal ("unable to open executable pack");

  if (!GetCurrentDirectory (sizeof (currdir), currdir))
    strcpy (currdir, ".");

  doit (1, &argv);

  return 0;
}

#else

int
main (int argc, char *argv[])
{
  u_setenv ("URLADER_EXEPATH", argv [0]);

  pack_handle = u_open (argv [0]);
  if (!u_valid (pack_handle))
    u_fatal ("unable to open executable pack");

  if (!getcwd (currdir, sizeof (currdir)))
    strcpy (currdir, ".");

#if 0
  /* intersperse hostname, for whatever reason */

  if (gethostname (tmppath, sizeof (tmppath)))
    strcpy (tmppath, "default");

  u_append (datadir, tmppath);
#endif

  doit (argc - 1, argv + 1);

  return 0;
}

#endif

Revision:	1.13
Committed:	Tue Jan 17 18:38:37 2012 UTC (12 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.12:	+36 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.13	/*
2			* Copyright (c) 2012 Marc Alexander Lehmann <schmorp@schmorp.de>
3			*
4			* Redistribution and use in source and binary forms, with or without modifica-
5			* tion, are permitted provided that the following conditions are met:
6			*
7			* 1. Redistributions of source code must retain the above copyright notice,
8			* this list of conditions and the following disclaimer.
9			*
10			* 2. Redistributions in binary form must reproduce the above copyright
11			* notice, this list of conditions and the following disclaimer in the
12			* documentation and/or other materials provided with the distribution.
13			*
14			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
15			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
16			* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
17			* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
18			* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
22			* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
23			* OF THE POSSIBILITY OF SUCH DAMAGE.
24			*
25			* Alternatively, the contents of this file may be used under the terms of
26			* the GNU General Public License ("GPL") version 2 or any later version,
27			* in which case the provisions of the GPL are applicable instead of
28			* the above. If you wish to allow the use of your version of this file
29			* only under the terms of the GPL and not to allow others to use your
30			* version of this file under the BSD license, indicate your decision
31			* by deleting the provisions above and replace them with the notice
32			* and other provisions required by the GPL. If you do not delete the
33			* provisions above, a recipient may use your version of this file under
34			* either the BSD or the GPL.
35			*/
36
37	root	1.9	#include "urlib.h"
38	root	1.8	#include "urlib.c"
39	root	1.6
40	root	1.1	#include <stdio.h>
41			#include <stdlib.h>
42			#include <unistd.h>
43			#include <errno.h>
44			#include <string.h>
45			#include <time.h>
46
47	root	1.2	#include "liblzf/lzf_d.c"
48	root	1.1
49	root	1.6	/* some simple? dynamic memory management for paths might save ltos of ram */
50	root	1.1	static u_handle pack_handle;
51	root	1.6	static u_handle lock_handle;
52	root	1.1	static char tmppath[MAX_PATH];
53
54			static int exe_argc;
55	root	1.12	static u_dynbuf exe_argv;
56			static u_dynbuf exe_args; /* actual arguments strings copied here */
57	root	1.1
58			static void
59			tmpdir (const char *dir)
60			{
61			static int cnt;
62
63			for (;;)
64			{
65			// #ifdef _WIN32
66			// sprintf (tmppath, "%s/%x_%x.tmp", dir, (unsigned int)GetCurrentProcessId (), ++cnt);
67			// #else
68			sprintf (tmppath, "%s/t-%x_%x.tmp", dir, (unsigned int)getpid () , ++cnt);
69			// #endif
70
71			if (!u_mkdir (tmppath))
72			return;
73			}
74			}
75
76			static void
77	root	1.6	systemv (const char *const argv[])
78	root	1.1	{
79			#ifdef _WIN32
80			_spawnv (P_WAIT, argv [0], argv);
81			#else
82	root	1.6	pid_t pid = fork ();
83	root	1.1
84			if (pid < 0)
85	root	1.9	u_fatal ("fork failure");
86	root	1.1
87			if (!pid)
88			{
89			execv (argv [0], (void *)argv);
90			_exit (124);
91			}
92
93			int status;
94			waitpid (pid, &status, 0);
95			#endif
96			}
97
98			static void
99			deltree (const char *path)
100			{
101			#ifdef _WIN32
102			char buf[MAX_PATH * 2 + 64];
103			const char *argv[] = { getenv ("COMSPEC"), "/c", "rd", "/s", "/q", buf, 0 };
104			sprintf (buf, "\"%s\"", path);
105			#else
106			const char *argv[] = { "/bin/rm", "-rf", path, 0 };
107			#endif
108	root	1.6	systemv (argv);
109	root	1.1	}
110
111			static char pack_base, pack_end;
112	root	1.12	static struct u_pack_tail *pack_tail;
113	root	1.8	static struct u_pack_hdr *pack_cur;
114	root	1.2	static char *scratch;
115	root	1.6	static unsigned int scratch_size;
116	root	1.1
117			#define PACK_NAME ((char *)(pack_cur + 1))
118			#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1)
119			#define PACK_VALID pack_cur->type
120
121			static void
122			pack_next (void)
123			{
124			unsigned int d = u_32 (pack_cur->datalen);
125
126	root	1.8	pack_cur = (struct u_pack_hdr *)(PACK_DATA + d);
127	root	1.1	}
128
129			static void
130			pack_unmap (void)
131			{
132	root	1.6	if (pack_base)
133			{
134			u_munmap (pack_base, pack_end - pack_base);
135			pack_base = 0;
136			}
137	root	1.1
138	root	1.6	if (scratch)
139			{
140			u_free (scratch, scratch_size);
141			scratch = 0;
142			}
143	root	1.1	}
144
145			static int
146			pack_map (void)
147			{
148	root	1.6	char *addr;
149			unsigned int size;
150
151	root	1.1	#ifdef _WIN32
152			BY_HANDLE_FILE_INFORMATION fi;
153
154			if (!GetFileInformationByHandle (pack_handle, &fi))
155			return 0;
156
157	root	1.6	size = fi.nFileSizeLow;
158			#else
159			size = lseek (pack_handle, 0, SEEK_END);
160			#endif
161	root	1.1
162	root	1.6	addr = u_mmap (pack_handle, size);
163			if (!addr)
164	root	1.1	return 0;
165
166	root	1.12	/pack_unmap ();/
167	root	1.1
168	root	1.6	pack_base = addr;
169			pack_end = pack_base + size;
170	root	1.1
171	root	1.12	pack_tail = (void )(pack_end - sizeof (pack_tail));
172
173			if (memcmp (pack_tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1))
174			return 0;
175	root	1.1
176	root	1.12	pack_cur = (struct u_pack_hdr *)(pack_end - u_32 (pack_tail->size));
177	root	1.1
178	root	1.12	if (pack_cur->type != T_META)
179	root	1.1	return 0;
180
181	root	1.12	scratch = u_malloc (scratch_size = u_32 (pack_tail->max_uncompressed));
182	root	1.6	if (!scratch)
183			return 0;
184	root	1.2
185	root	1.1	return 1;
186			}
187
188			static void
189	root	1.12	add_arg (char *arg, unsigned int len)
190	root	1.1	{
191	root	1.12	char *addr = u_dynbuf_append (&exe_args, arg, len);
192			u_dynbuf_append (&exe_argv, &addr, sizeof (addr));
193	root	1.1	}
194
195			static void
196			load (void)
197			{
198	root	1.12	strcpy (exe_id , PACK_NAME);
199			strcpy (exe_ver, PACK_DATA);
200			u_set_exe_info ();
201
202	root	1.1	if (u_chdir (exe_dir))
203	root	1.9	u_fatal ("unable to change to application data directory");
204	root	1.1
205			u_handle h = u_open ("override");
206	root	1.5	if (u_valid (h))
207	root	1.1	{
208			u_handle oh = pack_handle;
209
210	root	1.12	pack_unmap ();
211	root	1.1	pack_handle = h;
212	root	1.12
213			if (pack_map ()
214			&& strcmp (exe_id , PACK_NAME) == 0
215			&& strcmp (exe_ver, PACK_DATA) <= 0)
216	root	1.11	u_setenv ("URLADER_OVERRIDE", "override");
217			else
218	root	1.1	{
219	root	1.12	pack_unmap ();
220	root	1.1	pack_handle = oh;
221			oh = h;
222	root	1.12	pack_map ();
223	root	1.1	}
224
225			u_close (oh);
226			}
227
228			strcpy (exe_ver, PACK_DATA);
229	root	1.9	u_set_exe_info ();
230	root	1.1	pack_next ();
231
232	root	1.4	for (;;)
233	root	1.1	{
234	root	1.9	if (pack_cur->type == T_ENV)
235	root	1.4	u_setenv (PACK_NAME, PACK_DATA);
236	root	1.9	else if (pack_cur->type == T_ARG)
237	root	1.12	add_arg (PACK_NAME, u_16 (pack_cur->namelen) + 1);
238	root	1.4	else
239			break;
240	root	1.1
241			pack_next ();
242			}
243	root	1.4
244			done_env_arg:
245	root	1.1
246	root	1.6	strcat (strcpy (tmppath, execdir), ".lck");
247	root	1.7	lock_handle = u_lock (tmppath, 0, 1);
248	root	1.6	if (!lock_handle)
249	root	1.9	u_fatal ("unable to lock application instance");
250	root	1.6
251	root	1.1	if (access (execdir, F_OK))
252			{
253			// does not exist yet, so unpack and move
254			tmpdir (exe_dir);
255
256			if (u_chdir (tmppath))
257	root	1.9	u_fatal ("unable to change to new instance directory");
258	root	1.1
259			for (;;)
260			{
261			switch (pack_cur->type)
262			{
263	root	1.9	case T_DIR:
264	root	1.1	u_mkdir (PACK_NAME);
265			break;
266
267	root	1.9	case T_FILE:
268	root	1.1	{
269	root	1.9	u_handle h = u_creat (PACK_NAME, pack_cur->flags & F_EXEC);
270	root	1.2	unsigned int dlen, len = u_32 (pack_cur->datalen);
271			char *data = PACK_DATA;
272
273	root	1.9	if (pack_cur->flags & F_LZF)
274	root	1.6	if (dlen = lzf_decompress (data, len, scratch, scratch_size))
275	root	1.2	{
276			data = scratch;
277			len = dlen;
278			}
279			else
280	root	1.9	u_fatal ("unable to uncompress file data - pack corrupted?");
281	root	1.1
282	root	1.5	if (!u_valid (h))
283	root	1.9	u_fatal ("unable to unpack file from packfile - disk full?");
284	root	1.1
285	root	1.2	if (u_write (h, data, len) != len)
286	root	1.9	u_fatal ("unable to unpack file from packfile - disk full?");
287	root	1.1
288	root	1.4	u_fsync (h);
289	root	1.1	u_close (h);
290			}
291			break;
292
293	root	1.9	case T_NULL:
294	root	1.1	goto done;
295			}
296
297			pack_next ();
298			}
299
300			done:
301			if (u_chdir (datadir))
302	root	1.9	u_fatal ("unable to change to data directory");
303	root	1.1
304	root	1.3	u_sync ();
305
306	root	1.1	if (u_rename (tmppath, execdir))
307			deltree (tmppath); // if move fails, delete new, assume other process created it independently
308			}
309
310			pack_unmap ();
311			u_close (pack_handle);
312
313	root	1.2	if (u_chdir (execdir))
314	root	1.9	u_fatal ("unable to change to application instance directory");
315	root	1.2
316	root	1.1	u_setenv ("URLADER_VERSION", URLADER_VERSION);
317
318	root	1.5	#if 0
319	root	1.1	// yes, this is overkill
320			u_setenv ("SHLIB_PATH" , execdir); // hpux
321			u_setenv ("LIBPATH" , execdir); // aix
322			u_setenv ("LD_LIBRARY_PATH" , execdir); // most elf systems
323			u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris
324			u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris
325			u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix
326			u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix
327			u_setenv ("DYLD_LIBRARY_PATH" , execdir); // os sucks from apple
328	root	1.5	#endif
329	root	1.1	}
330
331	root	1.2	static void
332			execute (void)
333			{
334	root	1.12	char *null = 0;
335			u_dynbuf_append (&exe_argv, &null, sizeof (null));
336			systemv ((const char const )exe_argv.addr);
337	root	1.2	}
338
339	root	1.12	// this argc/argv is without argv [0]
340	root	1.9	static void
341	root	1.12	doit (int argc, char *argv[])
342	root	1.9	{
343	root	1.12	int i;
344
345			u_setenv ("URLADER_CURRDIR", currdir);
346
347	root	1.9	u_set_datadir ();
348			u_mkdir (datadir);
349
350	root	1.12	if (!pack_map ())
351			u_fatal ("unable to map pack file - executable corrupted?");
352	root	1.9
353			load ();
354	root	1.12
355			while (argc--)
356			{
357			add_arg (argv, strlen (argv) + 1);
358			++argv;
359			}
360
361	root	1.9	execute ();
362			}
363
364	root	1.1	#ifdef _WIN32
365
366			int APIENTRY
367			WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show)
368			{
369			if (!GetModuleFileName (hI, tmppath, sizeof (tmppath)))
370	root	1.9	u_fatal ("unable to find executable pack");
371	root	1.1
372	root	1.12	u_setenv ("URLADER_EXEPATH", tmppath);
373
374	root	1.5	pack_handle = u_open (tmppath);
375			if (!u_valid (pack_handle))
376	root	1.9	u_fatal ("unable to open executable pack");
377	root	1.1
378			if (!GetCurrentDirectory (sizeof (currdir), currdir))
379			strcpy (currdir, ".");
380
381	root	1.12	doit (1, &argv);
382	root	1.11
383	root	1.1	return 0;
384			}
385
386			#else
387
388			int
389			main (int argc, char *argv[])
390			{
391	root	1.12	u_setenv ("URLADER_EXEPATH", argv [0]);
392
393	root	1.5	pack_handle = u_open (argv [0]);
394			if (!u_valid (pack_handle))
395	root	1.9	u_fatal ("unable to open executable pack");
396	root	1.1
397			if (!getcwd (currdir, sizeof (currdir)))
398			strcpy (currdir, ".");
399
400	root	1.5	#if 0
401	root	1.11	/* intersperse hostname, for whatever reason */
402
403	root	1.1	if (gethostname (tmppath, sizeof (tmppath)))
404			strcpy (tmppath, "default");
405
406			u_append (datadir, tmppath);
407	root	1.5	#endif
408	root	1.1
409	root	1.12	doit (argc - 1, argv + 1);
410	root	1.1
411			return 0;
412			}
413
414			#endif
415