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Comparing Urlader/urlader.c (file contents):
Revision 1.2 by root, Thu Dec 29 10:20:56 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 "liblzf/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
… …
105 return; 58 return;
106 } 59 }
107} 60}
108 61
109static void 62static void
110systemv (const char *const argv[], int dowait) 63systemv (const char *const argv[])
111{ 64{
112#ifdef _WIN32 65#ifdef _WIN32
113 _spawnv (P_WAIT, argv [0], argv); 66 _spawnv (P_WAIT, argv [0], argv);
114#else 67#else
115 pid_t pid = dowait ? fork () : 0; 68 pid_t pid = fork ();
116 69
117 if (pid < 0) 70 if (pid < 0)
118 fatal ("fork failure"); 71 fatal ("fork failure");
119 72
120 if (!pid) 73 if (!pid)
… …
136 const char *argv[] = { getenv ("COMSPEC"), "/c", "rd", "/s", "/q", buf, 0 }; 89 const char *argv[] = { getenv ("COMSPEC"), "/c", "rd", "/s", "/q", buf, 0 };
137 sprintf (buf, "\"%s\"", path); 90 sprintf (buf, "\"%s\"", path);
138 #else 91 #else
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, 1); 94 systemv (argv);
142} 95}
143
144enum
145{
146 T_NULL, // 5
147 T_META, // 1 : exe_id, exe_ver
148 T_ARG, // 2 : arg
149 T_ENV, // 3 : name, value
150 T_DIR, // 4+: path
151 T_FILE, // 4+: path, data
152 T_NUM
153};
154
155enum
156{
157 F_EXEC = 1,
158 F_LZF = 2,
159 F_NULL = 0
160};
161
162struct hdr
163{
164 unsigned char type;
165 unsigned char flags;
166 unsigned char namelen[2];
167 unsigned char datalen[4];
168};
169
170struct tail {
171 unsigned char max_filesize[4];
172 unsigned char size[4];
173 char magic[12];
174};
175 96
176static char *pack_base, *pack_end; 97static char *pack_base, *pack_end;
177static struct hdr *pack_cur; 98static struct u_pack_hdr *pack_cur;
178static char *scratch; 99static char *scratch;
179static unsigned int scratch_len; 100static unsigned int scratch_size;
180 101
181#define PACK_NAME ((char *)(pack_cur + 1)) 102#define PACK_NAME ((char *)(pack_cur + 1))
182#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1) 103#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1)
183#define PACK_VALID pack_cur->type 104#define PACK_VALID pack_cur->type
184 105
185static void 106static void
186pack_next (void) 107pack_next (void)
187{ 108{
188 unsigned int d = u_32 (pack_cur->datalen); 109 unsigned int d = u_32 (pack_cur->datalen);
189 110
190 pack_cur = (struct hdr *)(PACK_DATA + d); 111 pack_cur = (struct u_pack_hdr *)(PACK_DATA + d);
191} 112}
192 113
193static void 114static void
194pack_unmap (void) 115pack_unmap (void)
195{ 116{
196 if (!pack_base) 117 if (pack_base)
197 return; 118 {
198
199 free (scratch);
200
201#ifdef _WIN32
202 UnmapViewOfFile (pack_base);
203#else
204 munmap (pack_base, pack_end - pack_base); 119 u_munmap (pack_base, pack_end - pack_base);
205#endif 120 pack_base = 0;
121 }
122
123 if (scratch)
124 {
125 u_free (scratch, scratch_size);
126 scratch = 0;
127 }
206} 128}
207 129
208static int 130static int
209pack_map (void) 131pack_map (void)
210{ 132{
133 char *addr;
134 unsigned int size;
135
211#ifdef _WIN32 136#ifdef _WIN32
212 BY_HANDLE_FILE_INFORMATION fi; 137 BY_HANDLE_FILE_INFORMATION fi;
213 138
214 if (!GetFileInformationByHandle (pack_handle, &fi)) 139 if (!GetFileInformationByHandle (pack_handle, &fi))
215 return 0; 140 return 0;
216 141
217 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)
218 return 0; 149 return 0;
219 150
220 HANDLE handle = CreateFileMapping (pack_handle, 0, PAGE_READONLY, 0, fi.nFileSizeLow, NULL);
221
222 if (!handle)
223 return 0;
224
225 pack_unmap (); 151 pack_unmap ();
226 152
227 pack_base = MapViewOfFile (handle, FILE_MAP_READ, 0, 0, fi.nFileSizeLow);
228
229 CloseHandle (handle);
230
231 pack_end = pack_base + fi.nFileSizeLow;
232#else
233 off_t len = lseek (pack_handle - 1, 0, SEEK_END);
234
235 pack_unmap ();
236
237 pack_base = mmap (0, len, PROT_READ, MAP_SHARED, pack_handle - 1, 0);
238 if (pack_base == (void *)-1)
239 pack_base = 0; 153 pack_base = addr;
240
241 pack_end = pack_base + len; 154 pack_end = pack_base + size;
242#endif
243 155
244 if (!pack_base)
245 return 0;
246
247 struct tail *tail; 156 struct u_pack_tail *tail;
248 157
249 tail = (void *)(pack_end - sizeof (*tail)); 158 tail = (void *)(pack_end - sizeof (*tail));
250 159
251 if (memcmp (tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1)) 160 if (memcmp (tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1))
252 return 0; 161 return 0;
253 162
254 pack_cur = (struct hdr *)(pack_end - u_32 (tail->size)); 163 pack_cur = (struct u_pack_hdr *)(pack_end - u_32 (tail->size));
255 164
256 free (scratch);
257 scratch = malloc (scratch_len = u_32 (tail->max_filesize)); 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 dlen, len = u_32 (pack_cur->datalen); 263 unsigned int dlen, len = u_32 (pack_cur->datalen);
343 char *data = PACK_DATA; 264 char *data = PACK_DATA;
344 265
345 if (pack_cur->flags & F_LZF) 266 if (pack_cur->flags & U_F_LZF)
346 if (dlen = lzf_decompress (data, len, scratch, scratch_len)) 267 if (dlen = lzf_decompress (data, len, scratch, scratch_size))
347 { 268 {
348 data = scratch; 269 data = scratch;
349 len = dlen; 270 len = dlen;
350 } 271 }
351 else 272 else
352 fatal ("unable to uncompress file data - pack corrupted?"); 273 fatal ("unable to uncompress file data - pack corrupted?");
353 274
354 if (!h) 275 if (!u_valid (h))
355 fatal ("unable to unpack file from packfile - disk full?"); 276 fatal ("unable to unpack file from packfile - disk full?");
356 277
357 if (u_write (h, data, len) != len) 278 if (u_write (h, data, len) != len)
358 fatal ("unable to unpack file from packfile - disk full?"); 279 fatal ("unable to unpack file from packfile - disk full?");
359 280
281 u_fsync (h);
360 u_close (h); 282 u_close (h);
361 } 283 }
362 break; 284 break;
363 285
364 case T_NULL: 286 case U_T_NULL:
365 goto done; 287 goto done;
366 } 288 }
367 289
368 pack_next (); 290 pack_next ();
369 } 291 }
370 292
371done: 293done:
372 if (u_chdir (datadir)) 294 if (u_chdir (datadir))
373 fatal ("unable to change to data directory"); 295 fatal ("unable to change to data directory");
296
297 u_sync ();
374 298
375 if (u_rename (tmppath, execdir)) 299 if (u_rename (tmppath, execdir))
376 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
377 } 301 }
378 302
… …
387 u_setenv ("URLADER_EXECDIR", execdir); 311 u_setenv ("URLADER_EXECDIR", execdir);
388 u_setenv ("URLADER_EXE_ID" , exe_id); 312 u_setenv ("URLADER_EXE_ID" , exe_id);
389 u_setenv ("URLADER_EXE_DIR", exe_dir); 313 u_setenv ("URLADER_EXE_DIR", exe_dir);
390 u_setenv ("URLADER_EXE_VER", exe_ver); 314 u_setenv ("URLADER_EXE_VER", exe_ver);
391 315
316#if 0
392 // yes, this is overkill 317 // yes, this is overkill
393 u_setenv ("SHLIB_PATH" , execdir); // hpux 318 u_setenv ("SHLIB_PATH" , execdir); // hpux
394 u_setenv ("LIBPATH" , execdir); // aix 319 u_setenv ("LIBPATH" , execdir); // aix
395 u_setenv ("LD_LIBRARY_PATH" , execdir); // most elf systems 320 u_setenv ("LD_LIBRARY_PATH" , execdir); // most elf systems
396 u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris 321 u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris
397 u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris 322 u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris
398 u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix 323 u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix
399 u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix 324 u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix
400 u_setenv ("DYLD_LIBRARY_PATH" , execdir); // os sucks from apple 325 u_setenv ("DYLD_LIBRARY_PATH" , execdir); // os sucks from apple
326#endif
401} 327}
402 328
403static void 329static void
404execute (void) 330execute (void)
405{ 331{
406 exe_argv [exe_argc] = 0; 332 exe_argv [exe_argc] = 0;
407 systemv (exe_argv, 0); 333 systemv (exe_argv);
408} 334}
409 335
410#ifdef _WIN32 336#ifdef _WIN32
411 337
412int APIENTRY 338int APIENTRY
413WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show) 339WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show)
414{ 340{
415 if (!GetModuleFileName (hI, tmppath, sizeof (tmppath))) 341 if (!GetModuleFileName (hI, tmppath, sizeof (tmppath)))
416 fatal ("unable to find executable pack"); 342 fatal ("unable to find executable pack");
417 343
418 if (!(pack_handle = u_open (tmppath))) 344 pack_handle = u_open (tmppath);
345 if (!u_valid (pack_handle))
419 fatal ("unable to open executable pack"); 346 fatal ("unable to open executable pack");
420 347
421 exe_info (); 348 exe_info ();
422 349
423 if (!GetCurrentDirectory (sizeof (currdir), currdir)) 350 if (!GetCurrentDirectory (sizeof (currdir), currdir))
… …
440int 367int
441main (int argc, char *argv[]) 368main (int argc, char *argv[])
442{ 369{
443 char *home = getenv ("HOME"); 370 char *home = getenv ("HOME");
444 371
445 // we assume fd 0 and 2 are "normal"
446
447 if (!(pack_handle = u_open (argv [0]))) 372 pack_handle = u_open (argv [0]);
373 if (!u_valid (pack_handle))
448 fatal ("unable to open executable pack"); 374 fatal ("unable to open executable pack");
449 375
450 exe_info (); 376 exe_info ();
451 377
452 if (!home) 378 if (!home)
… …
461 387
462 if (!getcwd (currdir, sizeof (currdir))) 388 if (!getcwd (currdir, sizeof (currdir)))
463 strcpy (currdir, "."); 389 strcpy (currdir, ".");
464 390
465 u_mkdir (home); 391 u_mkdir (home);
392 //strcat (strcat (strcpy (datadir, home), "/."), URLADER);
466 sprintf (datadir, "%s/.%s", home, URLADER); 393 sprintf (datadir, "%s/.%s", home, URLADER);
467 u_mkdir (datadir); 394 u_mkdir (datadir);
468 395
396#if 0
469 if (gethostname (tmppath, sizeof (tmppath))) 397 if (gethostname (tmppath, sizeof (tmppath)))
470 strcpy (tmppath, "default"); 398 strcpy (tmppath, "default");
471 399
472 u_append (datadir, tmppath); 400 u_append (datadir, tmppath);
401#endif
473 402
474 load (); 403 load ();
475 execute (); 404 execute ();
476 405
477 return 0; 406 return 0;

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