[ViewVC] Diff of: cvs/Urlader/urlader.c

Comparing Urlader/urlader.c (file contents):
Revision 1.1 by root, Thu Dec 29 00:44:21 2011 UTC vs.
Revision 1.12 by root, Fri Jan 6 07:56:36 2012 UTC

…		…
1	#ifndef URLADER	1	#include "urlib.h"
2	# define URLADER "urlader"	2	#include "urlib.c"
3	#endif
4	#define URLADER_VERSION "1.0"
5		3
6	#include <stdio.h>	4	#include <stdio.h>
7	#include <stdlib.h>	5	#include <stdlib.h>
8	#include <unistd.h>	6	#include <unistd.h>
9	#include <errno.h>	7	#include <errno.h>
10	#include <string.h>	8	#include <string.h>
11	#include <time.h>	9	#include <time.h>
12	#include <fcntl.h>
13		10
14	#include "lzf_d.c"	11	#include "liblzf/lzf_d.c"
15		12
16	#define TAIL_MAGIC "SCHMORPPACK0"	13	/* some simple? dynamic memory management for paths might save ltos of ram */
17
18	#ifdef _WIN32
19
20	#include <windows.h>
21	//#include <winbase.h>
22	#include <shlobj.h>
23	#include <shlwapi.h>
24	#include <wininet.h>
25
26	static DWORD dword;
27
28	#define u_handle HANDLE
29	#define u_setenv(name,value) SetEnvironmentVariable (name, value)
30	#define u_mkdir(path) !CreateDirectory (path, NULL)
31	#define u_chdir(path) !SetCurrentDirectory (path)
32	#define u_rename(fr,to) !MoveFile (fr, to)
33	#define u_open(path) CreateFile (path, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL \| FILE_FLAG_SEQUENTIAL_SCAN, NULL)
34	#define u_creat(path,exec) CreateFile (path, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL \| FILE_FLAG_SEQUENTIAL_SCAN, NULL)
35	#define u_close(handle) CloseHandle (handle)
36	#define u_append(path,add) PathAppend (path, add)
37	#define u_write(handle,data,len) (WriteFile (handle, data, len, &dword, 0) ? dword : -1)
38
39	#else
40
41	#include <sys/mman.h>
42	#include <sys/types.h>
43	#include <pwd.h>
44
45	#ifdef PATH_MAX
46	#define MAX_PATH (PATH_MAX < 4096 ? 4096 : PATH_MAX)
47	#else
48	#define MAX_PATH 4096
49	#endif
50
51	#define u_handle int
52	#define u_setenv(name,value) setenv (name, value, 1)
53	#define u_mkdir(path) mkdir (path, 0777)
54	#define u_chdir(path) chdir (path)
55	#define u_rename(fr,to) rename (fr, to)
56	#define u_open(path) open (path, O_RDONLY) + 1
57	#define u_creat(path,exec) open (path, O_WRONLY \| O_CREAT \| O_TRUNC, (exec) ? 0777 : 0666) + 1
58	#define u_close(handle) close (handle - 1)
59	#define u_append(path,add) strcat (strcat (path, "/"), add)
60	#define u_write(handle,data,len) write ((handle) - 1, data, len)
61
62	#endif
63
64	#define u_16(ptr) (((ptr)[0] << 8) \| (ptr)[1])
65	#define u_32(ptr) (((ptr)[0] << 24) \| ((ptr)[1] << 16) \| ((ptr)[2] << 8) \| (ptr)[3])
66
67	static u_handle pack_handle;	14	static u_handle pack_handle;
		15	static u_handle lock_handle;
68	static char tmppath[MAX_PATH];	16	static char tmppath[MAX_PATH];
69	static char currdir[MAX_PATH];
70	static char datadir[MAX_PATH]; // %AppData%/urlader
71	static char exe_dir[MAX_PATH]; // %AppData%/urlader/EXE_ID
72	static char execdir[MAX_PATH]; // %AppData%/urlader/EXE_ID/EXE_VER
73	static char exe_id[MAX_PATH];
74	static char exe_ver[MAX_PATH];
75		17
76	static int exe_argc;	18	static int exe_argc;
77	static const char *exe_argv[32];	19	static u_dynbuf exe_argv;
78		20	static u_dynbuf exe_args; /* actual arguments strings copied here */
79	static void
80	fatal (const char *msg)
81	{
82	#ifdef _WIN32
83	MessageBox (0, msg, URLADER, 0);
84	#else
85	fprintf (stderr, "%s: %s\n", URLADER, msg);
86	#endif
87
88	_exit (1);
89	}
90		21
91	static void	22	static void
92	tmpdir (const char *dir)	23	tmpdir (const char *dir)
93	{	24	{
94	static int cnt;	25	static int cnt;
113	_spawnv (P_WAIT, argv [0], argv);	44	_spawnv (P_WAIT, argv [0], argv);
114	#else	45	#else
115	pid_t pid = fork ();	46	pid_t pid = fork ();
116		47
117	if (pid < 0)	48	if (pid < 0)
118	fatal ("fork failure");	49	u_fatal ("fork failure");
119		50
120	if (!pid)	51	if (!pid)
121	{	52	{
122	execv (argv [0], (void *)argv);	53	execv (argv [0], (void *)argv);
123	_exit (124);	54	_exit (124);
…		…
139	const char *argv[] = { "/bin/rm", "-rf", path, 0 };	70	const char *argv[] = { "/bin/rm", "-rf", path, 0 };
140	#endif	71	#endif
141	systemv (argv);	72	systemv (argv);
142	}	73	}
143		74
144	static void
145	execute (void)
146	{
147	exe_argv [exe_argc] = 0;
148	systemv (exe_argv);
149	}
150
151	enum
152	{
153	T_NULL, // 5
154	T_META, // 1 : exe_id, exe_ver
155	T_ARG, // 2 : arg
156	T_ENV, // 3 : name, value
157	T_DIR, // 4+: path
158	T_FILE, // 4+: path, data
159	T_NUM
160	};
161
162	enum
163	{
164	F_EXEC = 1,
165	F_LZF = 2,
166	F_NULL = 0
167	};
168
169	struct hdr
170	{
171	unsigned char type;
172	unsigned char flags;
173	unsigned char namelen[2];
174	unsigned char datalen[4];
175	};
176
177	struct tail {
178	unsigned char max_filesize[4];
179	unsigned char size[4];
180	char magic[12];
181	};
182
183	static char pack_base, pack_end;	75	static char pack_base, pack_end;
		76	static struct u_pack_tail *pack_tail;
184	static struct hdr *pack_cur;	77	static struct u_pack_hdr *pack_cur;
		78	static char *scratch;
		79	static unsigned int scratch_size;
185		80
186	#define PACK_NAME ((char *)(pack_cur + 1))	81	#define PACK_NAME ((char *)(pack_cur + 1))
187	#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1)	82	#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1)
188	#define PACK_VALID pack_cur->type	83	#define PACK_VALID pack_cur->type
189		84
190	static void	85	static void
191	pack_next (void)	86	pack_next (void)
192	{	87	{
193	unsigned int d = u_32 (pack_cur->datalen);	88	unsigned int d = u_32 (pack_cur->datalen);
194		89
195	pack_cur = (struct hdr *)(PACK_DATA + d);	90	pack_cur = (struct u_pack_hdr *)(PACK_DATA + d);
196	}	91	}
197		92
198	static void	93	static void
199	pack_unmap (void)	94	pack_unmap (void)
200	{	95	{
201	if (!pack_base)	96	if (pack_base)
202	return;	97	{
203
204	#ifdef _WIN32
205	UnmapViewOfFile (pack_base);
206	#else
207	munmap (pack_base, pack_end - pack_base);	98	u_munmap (pack_base, pack_end - pack_base);
208	#endif	99	pack_base = 0;
		100	}
		101
		102	if (scratch)
		103	{
		104	u_free (scratch, scratch_size);
		105	scratch = 0;
		106	}
209	}	107	}
210		108
211	static int	109	static int
212	pack_map (void)	110	pack_map (void)
213	{	111	{
		112	char *addr;
		113	unsigned int size;
		114
214	#ifdef _WIN32	115	#ifdef _WIN32
215	BY_HANDLE_FILE_INFORMATION fi;	116	BY_HANDLE_FILE_INFORMATION fi;
216		117
217	if (!GetFileInformationByHandle (pack_handle, &fi))	118	if (!GetFileInformationByHandle (pack_handle, &fi))
218	return 0;	119	return 0;
219		120
220	if (fi.nFileSizeHigh) // too big	121	size = fi.nFileSizeLow;
221	return 0;
222
223	HANDLE handle = CreateFileMapping (pack_handle, 0, PAGE_READONLY, 0, fi.nFileSizeLow, NULL);
224
225	if (!handle)
226	return 0;
227
228	pack_unmap ();
229
230	pack_base = MapViewOfFile (handle, FILE_MAP_READ, 0, 0, fi.nFileSizeLow);
231
232	CloseHandle (handle);
233
234	pack_end = pack_base + fi.nFileSizeLow;
235	#else	122	#else
236	off_t len = lseek (pack_handle - 1, 0, SEEK_END);	123	size = lseek (pack_handle, 0, SEEK_END);
		124	#endif
237		125
		126	addr = u_mmap (pack_handle, size);
		127	if (!addr)
		128	return 0;
		129
238	pack_unmap ();	130	/pack_unmap ();/
239		131
240	pack_base = mmap (0, len, PROT_READ, MAP_SHARED, pack_handle - 1, 0);
241	if (pack_base == (void *)-1)
242	pack_base = 0;	132	pack_base = addr;
243
244	pack_end = pack_base + len;	133	pack_end = pack_base + size;
245	#endif
246		134
247	if (!pack_base)
248	return 0;
249
250	struct tail *tail;
251
252	tail = (void )(pack_end - sizeof (tail));	135	pack_tail = (void )(pack_end - sizeof (pack_tail));
253		136
254	if (memcmp (tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1))	137	if (memcmp (pack_tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1))
255	return 0;	138	return 0;
256		139
257	pack_cur = (struct hdr *)(pack_end - u_32 (tail->size));	140	pack_cur = (struct u_pack_hdr *)(pack_end - u_32 (pack_tail->size));
		141
		142	if (pack_cur->type != T_META)
		143	return 0;
		144
		145	scratch = u_malloc (scratch_size = u_32 (pack_tail->max_uncompressed));
		146	if (!scratch)
		147	return 0;
258		148
259	return 1;	149	return 1;
260	}	150	}
261		151
262	static void	152	static void
263	exe_info (void)	153	add_arg (char *arg, unsigned int len)
264	{	154	{
265	if (!pack_map ())	155	char *addr = u_dynbuf_append (&exe_args, arg, len);
266	fatal ("unable to locate packfile in executable - executable corrupted?");	156	u_dynbuf_append (&exe_argv, &addr, sizeof (addr));
267
268	if (pack_cur->type != T_META)
269	fatal ("unable to locate executable metadata - executable corrupted?");
270
271	strcpy (exe_id, PACK_NAME);
272	}	157	}
273		158
274	static void	159	static void
275	load (void)	160	load (void)
276	{	161	{
277	u_mkdir (datadir);	162	strcpy (exe_id , PACK_NAME);
278		163	strcpy (exe_ver, PACK_DATA);
279	strcpy (exe_dir, datadir);	164	u_set_exe_info ();
280	u_append (exe_dir, exe_id);
281	u_mkdir (exe_dir);
282		165
283	if (u_chdir (exe_dir))	166	if (u_chdir (exe_dir))
284	fatal ("unable to change to application data directory");	167	u_fatal ("unable to change to application data directory");
285		168
286	u_handle h = u_open ("override");	169	u_handle h = u_open ("override");
287	if (h)	170	if (u_valid (h))
288	{	171	{
289	u_handle oh = pack_handle;	172	u_handle oh = pack_handle;
290		173
		174	pack_unmap ();
291	pack_handle = h;	175	pack_handle = h;
		176
292	if (!pack_map ())	177	if (pack_map ()
		178	&& strcmp (exe_id , PACK_NAME) == 0
		179	&& strcmp (exe_ver, PACK_DATA) <= 0)
		180	u_setenv ("URLADER_OVERRIDE", "override");
		181	else
293	{	182	{
		183	pack_unmap ();
294	pack_handle = oh;	184	pack_handle = oh;
295	oh = h;	185	oh = h;
		186	pack_map ();
296	}	187	}
297		188
298	u_close (oh);	189	u_close (oh);
299	}	190	}
300		191
301	if (pack_cur->type != T_META)
302	fatal ("unable to locate override metadata");
303
304	strcpy (exe_ver, PACK_DATA);	192	strcpy (exe_ver, PACK_DATA);
		193	u_set_exe_info ();
305	pack_next ();	194	pack_next ();
306		195
		196	for (;;)
		197	{
		198	if (pack_cur->type == T_ENV)
		199	u_setenv (PACK_NAME, PACK_DATA);
307	while (pack_cur->type == T_ARG)	200	else if (pack_cur->type == T_ARG)
308	{	201	add_arg (PACK_NAME, u_16 (pack_cur->namelen) + 1);
309	exe_argv [exe_argc++] = strdup (PACK_NAME);	202	else
		203	break;
		204
310	pack_next ();	205	pack_next ();
311	}	206	}
		207
		208	done_env_arg:
312		209
313	while (pack_cur->type == T_ENV)	210	strcat (strcpy (tmppath, execdir), ".lck");
314	{	211	lock_handle = u_lock (tmppath, 0, 1);
315	u_setenv (PACK_NAME, PACK_DATA);	212	if (!lock_handle)
316	pack_next ();	213	u_fatal ("unable to lock application instance");
317	}
318
319	strcpy (execdir, exe_dir);
320	u_append (execdir, "i-");
321	strcat (execdir, exe_ver);
322		214
323	if (access (execdir, F_OK))	215	if (access (execdir, F_OK))
324	{	216	{
325	// does not exist yet, so unpack and move	217	// does not exist yet, so unpack and move
326	tmpdir (exe_dir);	218	tmpdir (exe_dir);
327		219
328	if (u_chdir (tmppath))	220	if (u_chdir (tmppath))
329	fatal ("unable to change to new instance directory");	221	u_fatal ("unable to change to new instance directory");
330		222
331	for (;;)	223	for (;;)
332	{	224	{
333	switch (pack_cur->type)	225	switch (pack_cur->type)
334	{	226	{
…		…
337	break;	229	break;
338		230
339	case T_FILE:	231	case T_FILE:
340	{	232	{
341	u_handle h = u_creat (PACK_NAME, pack_cur->flags & F_EXEC);	233	u_handle h = u_creat (PACK_NAME, pack_cur->flags & F_EXEC);
342	unsigned int len = u_32 (pack_cur->datalen);	234	unsigned int dlen, len = u_32 (pack_cur->datalen);
		235	char *data = PACK_DATA;
343		236
		237	if (pack_cur->flags & F_LZF)
		238	if (dlen = lzf_decompress (data, len, scratch, scratch_size))
		239	{
		240	data = scratch;
		241	len = dlen;
		242	}
		243	else
		244	u_fatal ("unable to uncompress file data - pack corrupted?");
		245
344	if (!h)	246	if (!u_valid (h))
345	fatal ("unable to unpack file from packfile - disk full?");	247	u_fatal ("unable to unpack file from packfile - disk full?");
346		248
347	if (u_write (h, PACK_DATA, len) != len)	249	if (u_write (h, data, len) != len)
348	fatal ("unable to unpack file from packfile - disk full?");	250	u_fatal ("unable to unpack file from packfile - disk full?");
349		251
		252	u_fsync (h);
350	u_close (h);	253	u_close (h);
351	}	254	}
352	break;	255	break;
353		256
354	case T_NULL:	257	case T_NULL:
…		…
358	pack_next ();	261	pack_next ();
359	}	262	}
360		263
361	done:	264	done:
362	if (u_chdir (datadir))	265	if (u_chdir (datadir))
363	fatal ("unable to change to data directory");	266	u_fatal ("unable to change to data directory");
		267
		268	u_sync ();
364		269
365	if (u_rename (tmppath, execdir))	270	if (u_rename (tmppath, execdir))
366	deltree (tmppath); // if move fails, delete new, assume other process created it independently	271	deltree (tmppath); // if move fails, delete new, assume other process created it independently
367
368	if (u_chdir (execdir))
369	fatal ("unable to change to application instance directory");
370	}	272	}
371		273
372	pack_unmap ();	274	pack_unmap ();
373	u_close (pack_handle);	275	u_close (pack_handle);
374		276
		277	if (u_chdir (execdir))
		278	u_fatal ("unable to change to application instance directory");
		279
375	u_setenv ("URLADER_VERSION", URLADER_VERSION);	280	u_setenv ("URLADER_VERSION", URLADER_VERSION);
376	u_setenv ("URLADER_DATADIR", datadir);
377	u_setenv ("URLADER_EXECDIR", execdir);
378	u_setenv ("URLADER_EXE_ID" , exe_id);
379	u_setenv ("URLADER_EXE_DIR", exe_dir);
380	u_setenv ("URLADER_EXE_VER", exe_ver);
381		281
		282	#if 0
382	// yes, this is overkill	283	// yes, this is overkill
383	u_setenv ("SHLIB_PATH" , execdir); // hpux	284	u_setenv ("SHLIB_PATH" , execdir); // hpux
384	u_setenv ("LIBPATH" , execdir); // aix	285	u_setenv ("LIBPATH" , execdir); // aix
385	u_setenv ("LD_LIBRARY_PATH" , execdir); // most elf systems	286	u_setenv ("LD_LIBRARY_PATH" , execdir); // most elf systems
386	u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris	287	u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris
387	u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris	288	u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris
388	u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix	289	u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix
389	u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix	290	u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix
390	u_setenv ("DYLD_LIBRARY_PATH" , execdir); // os sucks from apple	291	u_setenv ("DYLD_LIBRARY_PATH" , execdir); // os sucks from apple
		292	#endif
		293	}
		294
		295	static void
		296	execute (void)
		297	{
		298	char *null = 0;
		299	u_dynbuf_append (&exe_argv, &null, sizeof (null));
		300	systemv ((const char const )exe_argv.addr);
		301	}
		302
		303	// this argc/argv is without argv [0]
		304	static void
		305	doit (int argc, char *argv[])
		306	{
		307	int i;
		308
		309	u_setenv ("URLADER_CURRDIR", currdir);
		310
		311	u_set_datadir ();
		312	u_mkdir (datadir);
		313
		314	if (!pack_map ())
		315	u_fatal ("unable to map pack file - executable corrupted?");
		316
		317	load ();
		318
		319	while (argc--)
		320	{
		321	add_arg (argv, strlen (argv) + 1);
		322	++argv;
		323	}
		324
		325	execute ();
391	}	326	}
392		327
393	#ifdef _WIN32	328	#ifdef _WIN32
394		329
395	int APIENTRY	330	int APIENTRY
396	WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show)	331	WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show)
397	{	332	{
398	if (!GetModuleFileName (hI, tmppath, sizeof (tmppath)))	333	if (!GetModuleFileName (hI, tmppath, sizeof (tmppath)))
399	fatal ("unable to find executable pack");	334	u_fatal ("unable to find executable pack");
400		335
		336	u_setenv ("URLADER_EXEPATH", tmppath);
		337
401	if (!(pack_handle = u_open (tmppath)))	338	pack_handle = u_open (tmppath);
		339	if (!u_valid (pack_handle))
402	fatal ("unable to open executable pack");	340	u_fatal ("unable to open executable pack");
403
404	exe_info ();
405		341
406	if (!GetCurrentDirectory (sizeof (currdir), currdir))	342	if (!GetCurrentDirectory (sizeof (currdir), currdir))
407	strcpy (currdir, ".");	343	strcpy (currdir, ".");
408		344
409	if (SHGetFolderPath (0, CSIDL_APPDATA \| CSIDL_FLAG_CREATE, NULL, SHGFP_TYPE_CURRENT, datadir) != S_OK)	345	doit (1, &argv);
410	fatal ("unable to find application data directory");
411
412	u_mkdir (datadir);
413	u_append (datadir, URLADER);
414
415	load ();
416	execute ();
417		346
418	return 0;	347	return 0;
419	}	348	}
420		349
421	#else	350	#else
422		351
423	int	352	int
424	main (int argc, char *argv[])	353	main (int argc, char *argv[])
425	{	354	{
426	char *home = getenv ("HOME");	355	u_setenv ("URLADER_EXEPATH", argv [0]);
427		356
428	// we assume fd 0 and 2 are "normal"
429
430	if (!(pack_handle = u_open (argv [0])))	357	pack_handle = u_open (argv [0]);
		358	if (!u_valid (pack_handle))
431	fatal ("unable to open executable pack");	359	u_fatal ("unable to open executable pack");
432
433	exe_info ();
434
435	if (!home)
436	{
437	struct passwd *pw;
438
439	if ((pw = getpwuid (getuid ())))
440	home = pw->pw_dir;
441	else
442	home = "/tmp";
443	}
444		360
445	if (!getcwd (currdir, sizeof (currdir)))	361	if (!getcwd (currdir, sizeof (currdir)))
446	strcpy (currdir, ".");	362	strcpy (currdir, ".");
447		363
448	u_mkdir (home);	364	#if 0
449	sprintf (datadir, "%s/.%s", home, URLADER);	365	/* intersperse hostname, for whatever reason */
450	u_mkdir (datadir);
451		366
452	if (gethostname (tmppath, sizeof (tmppath)))	367	if (gethostname (tmppath, sizeof (tmppath)))
453	strcpy (tmppath, "default");	368	strcpy (tmppath, "default");
454		369
455	u_append (datadir, tmppath);	370	u_append (datadir, tmppath);
		371	#endif
456		372
457	load ();	373	doit (argc - 1, argv + 1);
458	execute ();
459		374
460	return 0;	375	return 0;
461	}	376	}
462		377
463	#endif	378	#endif

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Urlader/urlader.c (file contents): Revision 1.1 by root, Thu Dec 29 00:44:21 2011 UTC vs. Revision 1.12 by root, Fri Jan 6 07:56:36 2012 UTC

Diff Legend

Comparing Urlader/urlader.c (file contents):
Revision 1.1 by root, Thu Dec 29 00:44:21 2011 UTC vs.
Revision 1.12 by root, Fri Jan 6 07:56:36 2012 UTC