| 1 |
#include "urlib.h" |
| 2 |
#include "urlib.c" |
| 3 |
|
| 4 |
#include <stdio.h> |
| 5 |
#include <stdlib.h> |
| 6 |
#include <unistd.h> |
| 7 |
#include <errno.h> |
| 8 |
#include <string.h> |
| 9 |
#include <time.h> |
| 10 |
|
| 11 |
#include "liblzf/lzf_d.c" |
| 12 |
|
| 13 |
/* some simple? dynamic memory management for paths might save ltos of ram */ |
| 14 |
static u_handle pack_handle; |
| 15 |
static u_handle lock_handle; |
| 16 |
static char tmppath[MAX_PATH]; |
| 17 |
|
| 18 |
static int exe_argc; |
| 19 |
static u_dynbuf exe_argv; |
| 20 |
static u_dynbuf exe_args; /* actual arguments strings copied here */ |
| 21 |
|
| 22 |
static void |
| 23 |
tmpdir (const char *dir) |
| 24 |
{ |
| 25 |
static int cnt; |
| 26 |
|
| 27 |
for (;;) |
| 28 |
{ |
| 29 |
// #ifdef _WIN32 |
| 30 |
// sprintf (tmppath, "%s/%x_%x.tmp", dir, (unsigned int)GetCurrentProcessId (), ++cnt); |
| 31 |
// #else |
| 32 |
sprintf (tmppath, "%s/t-%x_%x.tmp", dir, (unsigned int)getpid () , ++cnt); |
| 33 |
// #endif |
| 34 |
|
| 35 |
if (!u_mkdir (tmppath)) |
| 36 |
return; |
| 37 |
} |
| 38 |
} |
| 39 |
|
| 40 |
static void |
| 41 |
systemv (const char *const argv[]) |
| 42 |
{ |
| 43 |
#ifdef _WIN32 |
| 44 |
_spawnv (P_WAIT, argv [0], argv); |
| 45 |
#else |
| 46 |
pid_t pid = fork (); |
| 47 |
|
| 48 |
if (pid < 0) |
| 49 |
u_fatal ("fork failure"); |
| 50 |
|
| 51 |
if (!pid) |
| 52 |
{ |
| 53 |
execv (argv [0], (void *)argv); |
| 54 |
_exit (124); |
| 55 |
} |
| 56 |
|
| 57 |
int status; |
| 58 |
waitpid (pid, &status, 0); |
| 59 |
#endif |
| 60 |
} |
| 61 |
|
| 62 |
static void |
| 63 |
deltree (const char *path) |
| 64 |
{ |
| 65 |
#ifdef _WIN32 |
| 66 |
char buf[MAX_PATH * 2 + 64]; |
| 67 |
const char *argv[] = { getenv ("COMSPEC"), "/c", "rd", "/s", "/q", buf, 0 }; |
| 68 |
sprintf (buf, "\"%s\"", path); |
| 69 |
#else |
| 70 |
const char *argv[] = { "/bin/rm", "-rf", path, 0 }; |
| 71 |
#endif |
| 72 |
systemv (argv); |
| 73 |
} |
| 74 |
|
| 75 |
static char *pack_base, *pack_end; |
| 76 |
static struct u_pack_tail *pack_tail; |
| 77 |
static struct u_pack_hdr *pack_cur; |
| 78 |
static char *scratch; |
| 79 |
static unsigned int scratch_size; |
| 80 |
|
| 81 |
#define PACK_NAME ((char *)(pack_cur + 1)) |
| 82 |
#define PACK_DATA (PACK_NAME + u_16 (pack_cur->namelen) + 1) |
| 83 |
#define PACK_VALID pack_cur->type |
| 84 |
|
| 85 |
static void |
| 86 |
pack_next (void) |
| 87 |
{ |
| 88 |
unsigned int d = u_32 (pack_cur->datalen); |
| 89 |
|
| 90 |
pack_cur = (struct u_pack_hdr *)(PACK_DATA + d); |
| 91 |
} |
| 92 |
|
| 93 |
static void |
| 94 |
pack_unmap (void) |
| 95 |
{ |
| 96 |
if (pack_base) |
| 97 |
{ |
| 98 |
u_munmap (pack_base, pack_end - pack_base); |
| 99 |
pack_base = 0; |
| 100 |
} |
| 101 |
|
| 102 |
if (scratch) |
| 103 |
{ |
| 104 |
u_free (scratch, scratch_size); |
| 105 |
scratch = 0; |
| 106 |
} |
| 107 |
} |
| 108 |
|
| 109 |
static int |
| 110 |
pack_map (void) |
| 111 |
{ |
| 112 |
char *addr; |
| 113 |
unsigned int size; |
| 114 |
|
| 115 |
#ifdef _WIN32 |
| 116 |
BY_HANDLE_FILE_INFORMATION fi; |
| 117 |
|
| 118 |
if (!GetFileInformationByHandle (pack_handle, &fi)) |
| 119 |
return 0; |
| 120 |
|
| 121 |
size = fi.nFileSizeLow; |
| 122 |
#else |
| 123 |
size = lseek (pack_handle, 0, SEEK_END); |
| 124 |
#endif |
| 125 |
|
| 126 |
addr = u_mmap (pack_handle, size); |
| 127 |
if (!addr) |
| 128 |
return 0; |
| 129 |
|
| 130 |
/*pack_unmap ();*/ |
| 131 |
|
| 132 |
pack_base = addr; |
| 133 |
pack_end = pack_base + size; |
| 134 |
|
| 135 |
pack_tail = (void *)(pack_end - sizeof (*pack_tail)); |
| 136 |
|
| 137 |
if (memcmp (pack_tail->magic, TAIL_MAGIC, sizeof (TAIL_MAGIC) - 1)) |
| 138 |
return 0; |
| 139 |
|
| 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; |
| 148 |
|
| 149 |
return 1; |
| 150 |
} |
| 151 |
|
| 152 |
static void |
| 153 |
add_arg (char *arg, unsigned int len) |
| 154 |
{ |
| 155 |
char *addr = u_dynbuf_append (&exe_args, arg, len); |
| 156 |
u_dynbuf_append (&exe_argv, &addr, sizeof (addr)); |
| 157 |
} |
| 158 |
|
| 159 |
static void |
| 160 |
load (void) |
| 161 |
{ |
| 162 |
strcpy (exe_id , PACK_NAME); |
| 163 |
strcpy (exe_ver, PACK_DATA); |
| 164 |
u_set_exe_info (); |
| 165 |
|
| 166 |
if (u_chdir (exe_dir)) |
| 167 |
u_fatal ("unable to change to application data directory"); |
| 168 |
|
| 169 |
u_handle h = u_open ("override"); |
| 170 |
if (u_valid (h)) |
| 171 |
{ |
| 172 |
u_handle oh = pack_handle; |
| 173 |
|
| 174 |
pack_unmap (); |
| 175 |
pack_handle = h; |
| 176 |
|
| 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 |
| 182 |
{ |
| 183 |
pack_unmap (); |
| 184 |
pack_handle = oh; |
| 185 |
oh = h; |
| 186 |
pack_map (); |
| 187 |
} |
| 188 |
|
| 189 |
u_close (oh); |
| 190 |
} |
| 191 |
|
| 192 |
strcpy (exe_ver, PACK_DATA); |
| 193 |
u_set_exe_info (); |
| 194 |
pack_next (); |
| 195 |
|
| 196 |
for (;;) |
| 197 |
{ |
| 198 |
if (pack_cur->type == T_ENV) |
| 199 |
u_setenv (PACK_NAME, PACK_DATA); |
| 200 |
else if (pack_cur->type == T_ARG) |
| 201 |
add_arg (PACK_NAME, u_16 (pack_cur->namelen) + 1); |
| 202 |
else |
| 203 |
break; |
| 204 |
|
| 205 |
pack_next (); |
| 206 |
} |
| 207 |
|
| 208 |
done_env_arg: |
| 209 |
|
| 210 |
strcat (strcpy (tmppath, execdir), ".lck"); |
| 211 |
lock_handle = u_lock (tmppath, 0, 1); |
| 212 |
if (!lock_handle) |
| 213 |
u_fatal ("unable to lock application instance"); |
| 214 |
|
| 215 |
if (access (execdir, F_OK)) |
| 216 |
{ |
| 217 |
// does not exist yet, so unpack and move |
| 218 |
tmpdir (exe_dir); |
| 219 |
|
| 220 |
if (u_chdir (tmppath)) |
| 221 |
u_fatal ("unable to change to new instance directory"); |
| 222 |
|
| 223 |
for (;;) |
| 224 |
{ |
| 225 |
switch (pack_cur->type) |
| 226 |
{ |
| 227 |
case T_DIR: |
| 228 |
u_mkdir (PACK_NAME); |
| 229 |
break; |
| 230 |
|
| 231 |
case T_FILE: |
| 232 |
{ |
| 233 |
u_handle h = u_creat (PACK_NAME, pack_cur->flags & F_EXEC); |
| 234 |
unsigned int dlen, len = u_32 (pack_cur->datalen); |
| 235 |
char *data = PACK_DATA; |
| 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 |
|
| 246 |
if (!u_valid (h)) |
| 247 |
u_fatal ("unable to unpack file from packfile - disk full?"); |
| 248 |
|
| 249 |
if (u_write (h, data, len) != len) |
| 250 |
u_fatal ("unable to unpack file from packfile - disk full?"); |
| 251 |
|
| 252 |
u_fsync (h); |
| 253 |
u_close (h); |
| 254 |
} |
| 255 |
break; |
| 256 |
|
| 257 |
case T_NULL: |
| 258 |
goto done; |
| 259 |
} |
| 260 |
|
| 261 |
pack_next (); |
| 262 |
} |
| 263 |
|
| 264 |
done: |
| 265 |
if (u_chdir (datadir)) |
| 266 |
u_fatal ("unable to change to data directory"); |
| 267 |
|
| 268 |
u_sync (); |
| 269 |
|
| 270 |
if (u_rename (tmppath, execdir)) |
| 271 |
deltree (tmppath); // if move fails, delete new, assume other process created it independently |
| 272 |
} |
| 273 |
|
| 274 |
pack_unmap (); |
| 275 |
u_close (pack_handle); |
| 276 |
|
| 277 |
if (u_chdir (execdir)) |
| 278 |
u_fatal ("unable to change to application instance directory"); |
| 279 |
|
| 280 |
u_setenv ("URLADER_VERSION", URLADER_VERSION); |
| 281 |
|
| 282 |
#if 0 |
| 283 |
// yes, this is overkill |
| 284 |
u_setenv ("SHLIB_PATH" , execdir); // hpux |
| 285 |
u_setenv ("LIBPATH" , execdir); // aix |
| 286 |
u_setenv ("LD_LIBRARY_PATH" , execdir); // most elf systems |
| 287 |
u_setenv ("LD_LIBRARY_PATH_32", execdir); // solaris |
| 288 |
u_setenv ("LD_LIBRARY_PATH_64", execdir); // solaris |
| 289 |
u_setenv ("LD_LIBRARYN32_PATH", execdir); // irix |
| 290 |
u_setenv ("LD_LIBRARY64_PATH" , execdir); // irix |
| 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 (); |
| 326 |
} |
| 327 |
|
| 328 |
#ifdef _WIN32 |
| 329 |
|
| 330 |
int APIENTRY |
| 331 |
WinMain (HINSTANCE hI, HINSTANCE hP, LPSTR argv, int command_show) |
| 332 |
{ |
| 333 |
if (!GetModuleFileName (hI, tmppath, sizeof (tmppath))) |
| 334 |
u_fatal ("unable to find executable pack"); |
| 335 |
|
| 336 |
u_setenv ("URLADER_EXEPATH", tmppath); |
| 337 |
|
| 338 |
pack_handle = u_open (tmppath); |
| 339 |
if (!u_valid (pack_handle)) |
| 340 |
u_fatal ("unable to open executable pack"); |
| 341 |
|
| 342 |
if (!GetCurrentDirectory (sizeof (currdir), currdir)) |
| 343 |
strcpy (currdir, "."); |
| 344 |
|
| 345 |
doit (1, &argv); |
| 346 |
|
| 347 |
return 0; |
| 348 |
} |
| 349 |
|
| 350 |
#else |
| 351 |
|
| 352 |
int |
| 353 |
main (int argc, char *argv[]) |
| 354 |
{ |
| 355 |
u_setenv ("URLADER_EXEPATH", argv [0]); |
| 356 |
|
| 357 |
pack_handle = u_open (argv [0]); |
| 358 |
if (!u_valid (pack_handle)) |
| 359 |
u_fatal ("unable to open executable pack"); |
| 360 |
|
| 361 |
if (!getcwd (currdir, sizeof (currdir))) |
| 362 |
strcpy (currdir, "."); |
| 363 |
|
| 364 |
#if 0 |
| 365 |
/* intersperse hostname, for whatever reason */ |
| 366 |
|
| 367 |
if (gethostname (tmppath, sizeof (tmppath))) |
| 368 |
strcpy (tmppath, "default"); |
| 369 |
|
| 370 |
u_append (datadir, tmppath); |
| 371 |
#endif |
| 372 |
|
| 373 |
doit (argc - 1, argv + 1); |
| 374 |
|
| 375 |
return 0; |
| 376 |
} |
| 377 |
|
| 378 |
#endif |
| 379 |
|
