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

Comparing Urlader/urlader.c (file contents):
Revision 1.3 by root, Thu Dec 29 10:39:34 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 "liblzf/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	#define u_sync() // use transacted I/O?
39
40	#else
41
42	#include <sys/mman.h>
43	#include <sys/types.h>
44	#include <pwd.h>
45
46	#ifdef PATH_MAX
47	#define MAX_PATH (PATH_MAX < 4096 ? 4096 : PATH_MAX)
48	#else
49	#define MAX_PATH 4096
50	#endif
51
52	#define u_handle int
53	#define u_setenv(name,value) setenv (name, value, 1)
54	#define u_mkdir(path) mkdir (path, 0777)
55	#define u_chdir(path) chdir (path)
56	#define u_rename(fr,to) rename (fr, to)
57	#define u_open(path) open (path, O_RDONLY) + 1
58	#define u_creat(path,exec) open (path, O_WRONLY \| O_CREAT \| O_TRUNC, (exec) ? 0777 : 0666) + 1
59	#define u_close(handle) close (handle - 1)
60	#define u_append(path,add) strcat (strcat (path, "/"), add)
61	#define u_write(handle,data,len) write ((handle) - 1, data, len)
62	#define u_sync() sync ()
63
64	#endif
65
66	#define u_16(ptr) (((ptr)[0] << 8) \| (ptr)[1])
67	#define u_32(ptr) (((ptr)[0] << 24) \| ((ptr)[1] << 16) \| ((ptr)[2] << 8) \| (ptr)[3])
68
69	static u_handle pack_handle;	14	static u_handle pack_handle;
		15	static u_handle lock_handle;
70	static char tmppath[MAX_PATH];	16	static char tmppath[MAX_PATH];
71	static char currdir[MAX_PATH];
72	static char datadir[MAX_PATH]; // %AppData%/urlader
73	static char exe_dir[MAX_PATH]; // %AppData%/urlader/EXE_ID
74	static char execdir[MAX_PATH]; // %AppData%/urlader/EXE_ID/EXE_VER
75	static char exe_id[MAX_PATH];
76	static char exe_ver[MAX_PATH];
77		17
78	static int exe_argc;	18	static int exe_argc;
79	static const char *exe_argv[32];	19	static u_dynbuf exe_argv;
80		20	static u_dynbuf exe_args; /* actual arguments strings copied here */
81	static void
82	fatal (const char *msg)
83	{
84	#ifdef _WIN32
85	MessageBox (0, msg, URLADER, 0);
86	#else
87	fprintf (stderr, "%s: %s\n", URLADER, msg);
88	#endif
89
90	_exit (1);
91	}
92		21
93	static void	22	static void
94	tmpdir (const char *dir)	23	tmpdir (const char *dir)
95	{	24	{
96	static int cnt;	25	static int cnt;
107	return;	36	return;
108	}	37	}
109	}	38	}
110		39
111	static void	40	static void
112	systemv (const char *const argv[], int dowait)	41	systemv (const char *const argv[])
113	{	42	{
114	#ifdef _WIN32	43	#ifdef _WIN32
115	_spawnv (P_WAIT, argv [0], argv);	44	_spawnv (P_WAIT, argv [0], argv);
116	#else	45	#else
117	pid_t pid = dowait ? fork () : 0;	46	pid_t pid = fork ();
118		47
119	if (pid < 0)	48	if (pid < 0)
120	fatal ("fork failure");	49	u_fatal ("fork failure");
121		50
122	if (!pid)	51	if (!pid)
123	{	52	{
124	execv (argv [0], (void *)argv);	53	execv (argv [0], (void *)argv);
125	_exit (124);	54	_exit (124);
…		…
138	const char *argv[] = { getenv ("COMSPEC"), "/c", "rd", "/s", "/q", buf, 0 };	67	const char *argv[] = { getenv ("COMSPEC"), "/c", "rd", "/s", "/q", buf, 0 };
139	sprintf (buf, "\"%s\"", path);	68	sprintf (buf, "\"%s\"", path);
140	#else	69	#else
141	const char *argv[] = { "/bin/rm", "-rf", path, 0 };	70	const char *argv[] = { "/bin/rm", "-rf", path, 0 };
142	#endif	71	#endif
143	systemv (argv, 1);	72	systemv (argv);
144	}	73	}
145
146	enum
147	{
148	T_NULL, // 5
149	T_META, // 1 : exe_id, exe_ver
150	T_ARG, // 2 : arg
151	T_ENV, // 3 : name, value
152	T_DIR, // 4+: path
153	T_FILE, // 4+: path, data
154	T_NUM
155	};
156
157	enum
158	{
159	F_EXEC = 1,
160	F_LZF = 2,
161	F_NULL = 0
162	};
163
164	struct hdr
165	{
166	unsigned char type;
167	unsigned char flags;
168	unsigned char namelen[2];
169	unsigned char datalen[4];
170	};
171
172	struct tail {
173	unsigned char max_filesize[4];
174	unsigned char size[4];
175	char magic[12];
176	};
177		74
178	static char pack_base, pack_end;	75	static char pack_base, pack_end;
		76	static struct u_pack_tail *pack_tail;
179	static struct hdr *pack_cur;	77	static struct u_pack_hdr *pack_cur;
180	static char *scratch;	78	static char *scratch;
181	static unsigned int scratch_len;	79	static unsigned int scratch_size;
182		80
183	#define PACK_NAME ((char *)(pack_cur + 1))	81	#define PACK_NAME ((char *)(pack_cur + 1))
184	#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1)	82	#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1)
185	#define PACK_VALID pack_cur->type	83	#define PACK_VALID pack_cur->type
186		84
187	static void	85	static void
188	pack_next (void)	86	pack_next (void)
189	{	87	{
190	unsigned int d = u_32 (pack_cur->datalen);	88	unsigned int d = u_32 (pack_cur->datalen);
191		89
192	pack_cur = (struct hdr *)(PACK_DATA + d);	90	pack_cur = (struct u_pack_hdr *)(PACK_DATA + d);
193	}	91	}
194		92
195	static void	93	static void
196	pack_unmap (void)	94	pack_unmap (void)
197	{	95	{
198	if (!pack_base)	96	if (pack_base)
199	return;	97	{
200
201	free (scratch);
202
203	#ifdef _WIN32
204	UnmapViewOfFile (pack_base);
205	#else
206	munmap (pack_base, pack_end - pack_base);	98	u_munmap (pack_base, pack_end - pack_base);
207	#endif	99	pack_base = 0;
		100	}
		101
		102	if (scratch)
		103	{
		104	u_free (scratch, scratch_size);
		105	scratch = 0;
		106	}
208	}	107	}
209		108
210	static int	109	static int
211	pack_map (void)	110	pack_map (void)
212	{	111	{
		112	char *addr;
		113	unsigned int size;
		114
213	#ifdef _WIN32	115	#ifdef _WIN32
214	BY_HANDLE_FILE_INFORMATION fi;	116	BY_HANDLE_FILE_INFORMATION fi;
215		117
216	if (!GetFileInformationByHandle (pack_handle, &fi))	118	if (!GetFileInformationByHandle (pack_handle, &fi))
217	return 0;	119	return 0;
218		120
219	if (fi.nFileSizeHigh) // too big	121	size = fi.nFileSizeLow;
220	return 0;
221
222	HANDLE handle = CreateFileMapping (pack_handle, 0, PAGE_READONLY, 0, fi.nFileSizeLow, NULL);
223
224	if (!handle)
225	return 0;
226
227	pack_unmap ();
228
229	pack_base = MapViewOfFile (handle, FILE_MAP_READ, 0, 0, fi.nFileSizeLow);
230
231	CloseHandle (handle);
232
233	pack_end = pack_base + fi.nFileSizeLow;
234	#else	122	#else
235	off_t len = lseek (pack_handle - 1, 0, SEEK_END);	123	size = lseek (pack_handle, 0, SEEK_END);
		124	#endif
236		125
		126	addr = u_mmap (pack_handle, size);
		127	if (!addr)
		128	return 0;
		129
237	pack_unmap ();	130	/pack_unmap ();/
238		131
239	pack_base = mmap (0, len, PROT_READ, MAP_SHARED, pack_handle - 1, 0);
240	if (pack_base == (void *)-1)
241	pack_base = 0;	132	pack_base = addr;
242
243	pack_end = pack_base + len;	133	pack_end = pack_base + size;
244	#endif
245		134
246	if (!pack_base)
247	return 0;
248
249	struct tail *tail;
250
251	tail = (void )(pack_end - sizeof (tail));	135	pack_tail = (void )(pack_end - sizeof (pack_tail));
252		136
253	if (memcmp (tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1))	137	if (memcmp (pack_tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1))
254	return 0;	138	return 0;
255		139
256	pack_cur = (struct hdr *)(pack_end - u_32 (tail->size));	140	pack_cur = (struct u_pack_hdr *)(pack_end - u_32 (pack_tail->size));
257		141
		142	if (pack_cur->type != T_META)
		143	return 0;
		144
		145	scratch = u_malloc (scratch_size = u_32 (pack_tail->max_uncompressed));
258	free (scratch);	146	if (!scratch)
259	scratch = malloc (scratch_len = u_32 (tail->max_filesize));	147	return 0;
260		148
261	return 1;	149	return 1;
262	}	150	}
263		151
264	static void	152	static void
265	exe_info (void)	153	add_arg (char *arg, unsigned int len)
266	{	154	{
267	if (!pack_map ())	155	char *addr = u_dynbuf_append (&exe_args, arg, len);
268	fatal ("unable to locate packfile in executable - executable corrupted?");	156	u_dynbuf_append (&exe_argv, &addr, sizeof (addr));
269
270	if (pack_cur->type != T_META)
271	fatal ("unable to locate executable metadata - executable corrupted?");
272
273	strcpy (exe_id, PACK_NAME);
274	}	157	}
275		158
276	static void	159	static void
277	load (void)	160	load (void)
278	{	161	{
279	u_mkdir (datadir);	162	strcpy (exe_id , PACK_NAME);
280		163	strcpy (exe_ver, PACK_DATA);
281	strcpy (exe_dir, datadir);	164	u_set_exe_info ();
282	u_append (exe_dir, exe_id);
283	u_mkdir (exe_dir);
284		165
285	if (u_chdir (exe_dir))	166	if (u_chdir (exe_dir))
286	fatal ("unable to change to application data directory");	167	u_fatal ("unable to change to application data directory");
287		168
288	u_handle h = u_open ("override");	169	u_handle h = u_open ("override");
289	if (h)	170	if (u_valid (h))
290	{	171	{
291	u_handle oh = pack_handle;	172	u_handle oh = pack_handle;
292		173
		174	pack_unmap ();
293	pack_handle = h;	175	pack_handle = h;
		176
294	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
295	{	182	{
		183	pack_unmap ();
296	pack_handle = oh;	184	pack_handle = oh;
297	oh = h;	185	oh = h;
		186	pack_map ();
298	}	187	}
299		188
300	u_close (oh);	189	u_close (oh);
301	}	190	}
302		191
303	if (pack_cur->type != T_META)
304	fatal ("unable to locate override metadata");
305
306	strcpy (exe_ver, PACK_DATA);	192	strcpy (exe_ver, PACK_DATA);
		193	u_set_exe_info ();
307	pack_next ();	194	pack_next ();
308		195
		196	for (;;)
		197	{
		198	if (pack_cur->type == T_ENV)
		199	u_setenv (PACK_NAME, PACK_DATA);
309	while (pack_cur->type == T_ARG)	200	else if (pack_cur->type == T_ARG)
310	{	201	add_arg (PACK_NAME, u_16 (pack_cur->namelen) + 1);
311	exe_argv [exe_argc++] = strdup (PACK_NAME);	202	else
		203	break;
		204
312	pack_next ();	205	pack_next ();
313	}	206	}
		207
		208	done_env_arg:
314		209
315	while (pack_cur->type == T_ENV)	210	strcat (strcpy (tmppath, execdir), ".lck");
316	{	211	lock_handle = u_lock (tmppath, 0, 1);
317	u_setenv (PACK_NAME, PACK_DATA);	212	if (!lock_handle)
318	pack_next ();	213	u_fatal ("unable to lock application instance");
319	}
320
321	strcpy (execdir, exe_dir);
322	u_append (execdir, "i-");
323	strcat (execdir, exe_ver);
324		214
325	if (access (execdir, F_OK))	215	if (access (execdir, F_OK))
326	{	216	{
327	// does not exist yet, so unpack and move	217	// does not exist yet, so unpack and move
328	tmpdir (exe_dir);	218	tmpdir (exe_dir);
329		219
330	if (u_chdir (tmppath))	220	if (u_chdir (tmppath))
331	fatal ("unable to change to new instance directory");	221	u_fatal ("unable to change to new instance directory");
332		222
333	for (;;)	223	for (;;)
334	{	224	{
335	switch (pack_cur->type)	225	switch (pack_cur->type)
336	{	226	{
…		…
343	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);
344	unsigned int dlen, len = u_32 (pack_cur->datalen);	234	unsigned int dlen, len = u_32 (pack_cur->datalen);
345	char *data = PACK_DATA;	235	char *data = PACK_DATA;
346		236
347	if (pack_cur->flags & F_LZF)	237	if (pack_cur->flags & F_LZF)
348	if (dlen = lzf_decompress (data, len, scratch, scratch_len))	238	if (dlen = lzf_decompress (data, len, scratch, scratch_size))
349	{	239	{
350	data = scratch;	240	data = scratch;
351	len = dlen;	241	len = dlen;
352	}	242	}
353	else	243	else
354	fatal ("unable to uncompress file data - pack corrupted?");	244	u_fatal ("unable to uncompress file data - pack corrupted?");
355		245
356	if (!h)	246	if (!u_valid (h))
357	fatal ("unable to unpack file from packfile - disk full?");	247	u_fatal ("unable to unpack file from packfile - disk full?");
358		248
359	if (u_write (h, data, len) != len)	249	if (u_write (h, data, len) != len)
360	fatal ("unable to unpack file from packfile - disk full?");	250	u_fatal ("unable to unpack file from packfile - disk full?");
361		251
		252	u_fsync (h);
362	u_close (h);	253	u_close (h);
363	}	254	}
364	break;	255	break;
365		256
366	case T_NULL:	257	case T_NULL:
…		…
370	pack_next ();	261	pack_next ();
371	}	262	}
372		263
373	done:	264	done:
374	if (u_chdir (datadir))	265	if (u_chdir (datadir))
375	fatal ("unable to change to data directory");	266	u_fatal ("unable to change to data directory");
376		267
377	u_sync ();	268	u_sync ();
378		269
379	if (u_rename (tmppath, execdir))	270	if (u_rename (tmppath, execdir))
380	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
…		…
382		273
383	pack_unmap ();	274	pack_unmap ();
384	u_close (pack_handle);	275	u_close (pack_handle);
385		276
386	if (u_chdir (execdir))	277	if (u_chdir (execdir))
387	fatal ("unable to change to application instance directory");	278	u_fatal ("unable to change to application instance directory");
388		279
389	u_setenv ("URLADER_VERSION", URLADER_VERSION);	280	u_setenv ("URLADER_VERSION", URLADER_VERSION);
390	u_setenv ("URLADER_DATADIR", datadir);
391	u_setenv ("URLADER_EXECDIR", execdir);
392	u_setenv ("URLADER_EXE_ID" , exe_id);
393	u_setenv ("URLADER_EXE_DIR", exe_dir);
394	u_setenv ("URLADER_EXE_VER", exe_ver);
395		281
		282	#if 0
396	// yes, this is overkill	283	// yes, this is overkill
397	u_setenv ("SHLIB_PATH" , execdir); // hpux	284	u_setenv ("SHLIB_PATH" , execdir); // hpux
398	u_setenv ("LIBPATH" , execdir); // aix	285	u_setenv ("LIBPATH" , execdir); // aix
399	u_setenv ("LD_LIBRARY_PATH" , execdir); // most elf systems	286	u_setenv ("LD_LIBRARY_PATH" , execdir); // most elf systems
400	u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris	287	u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris
401	u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris	288	u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris
402	u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix	289	u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix
403	u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix	290	u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix
404	u_setenv ("DYLD_LIBRARY_PATH" , execdir); // os sucks from apple	291	u_setenv ("DYLD_LIBRARY_PATH" , execdir); // os sucks from apple
		292	#endif
405	}	293	}
406		294
407	static void	295	static void
408	execute (void)	296	execute (void)
409	{	297	{
410	exe_argv [exe_argc] = 0;	298	char *null = 0;
411	systemv (exe_argv, 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 ();
412	}	326	}
413		327
414	#ifdef _WIN32	328	#ifdef _WIN32
415		329
416	int APIENTRY	330	int APIENTRY
417	WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show)	331	WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show)
418	{	332	{
419	if (!GetModuleFileName (hI, tmppath, sizeof (tmppath)))	333	if (!GetModuleFileName (hI, tmppath, sizeof (tmppath)))
420	fatal ("unable to find executable pack");	334	u_fatal ("unable to find executable pack");
421		335
		336	u_setenv ("URLADER_EXEPATH", tmppath);
		337
422	if (!(pack_handle = u_open (tmppath)))	338	pack_handle = u_open (tmppath);
		339	if (!u_valid (pack_handle))
423	fatal ("unable to open executable pack");	340	u_fatal ("unable to open executable pack");
424
425	exe_info ();
426		341
427	if (!GetCurrentDirectory (sizeof (currdir), currdir))	342	if (!GetCurrentDirectory (sizeof (currdir), currdir))
428	strcpy (currdir, ".");	343	strcpy (currdir, ".");
429		344
430	if (SHGetFolderPath (0, CSIDL_APPDATA \| CSIDL_FLAG_CREATE, NULL, SHGFP_TYPE_CURRENT, datadir) != S_OK)	345	doit (1, &argv);
431	fatal ("unable to find application data directory");
432
433	u_mkdir (datadir);
434	u_append (datadir, URLADER);
435
436	load ();
437	execute ();
438		346
439	return 0;	347	return 0;
440	}	348	}
441		349
442	#else	350	#else
443		351
444	int	352	int
445	main (int argc, char *argv[])	353	main (int argc, char *argv[])
446	{	354	{
447	char *home = getenv ("HOME");	355	u_setenv ("URLADER_EXEPATH", argv [0]);
448		356
449	// we assume fd 0 and 2 are "normal"
450
451	if (!(pack_handle = u_open (argv [0])))	357	pack_handle = u_open (argv [0]);
		358	if (!u_valid (pack_handle))
452	fatal ("unable to open executable pack");	359	u_fatal ("unable to open executable pack");
453
454	exe_info ();
455
456	if (!home)
457	{
458	struct passwd *pw;
459
460	if ((pw = getpwuid (getuid ())))
461	home = pw->pw_dir;
462	else
463	home = "/tmp";
464	}
465		360
466	if (!getcwd (currdir, sizeof (currdir)))	361	if (!getcwd (currdir, sizeof (currdir)))
467	strcpy (currdir, ".");	362	strcpy (currdir, ".");
468		363
469	u_mkdir (home);	364	#if 0
470	sprintf (datadir, "%s/.%s", home, URLADER);	365	/* intersperse hostname, for whatever reason */
471	u_mkdir (datadir);
472		366
473	if (gethostname (tmppath, sizeof (tmppath)))	367	if (gethostname (tmppath, sizeof (tmppath)))
474	strcpy (tmppath, "default");	368	strcpy (tmppath, "default");
475		369
476	u_append (datadir, tmppath);	370	u_append (datadir, tmppath);
		371	#endif
477		372
478	load ();	373	doit (argc - 1, argv + 1);
479	execute ();
480		374
481	return 0;	375	return 0;
482	}	376	}
483		377
484	#endif	378	#endif

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Comparing Urlader/urlader.c (file contents): Revision 1.3 by root, Thu Dec 29 10:39:34 2011 UTC vs. Revision 1.12 by root, Fri Jan 6 07:56:36 2012 UTC

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Comparing Urlader/urlader.c (file contents):
Revision 1.3 by root, Thu Dec 29 10:39:34 2011 UTC vs.
Revision 1.12 by root, Fri Jan 6 07:56:36 2012 UTC