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Comparing Urlader/urlader.c (file contents):
Revision 1.1 by root, Thu Dec 29 00:44:21 2011 UTC vs.
Revision 1.8 by root, Fri Dec 30 23:34:08 2011 UTC

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

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