1 /*
2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 #ifdef _ALLBSD_SOURCE
26 #include <stdint.h>
27 #define THRTYPE intptr_t
28 #else
29 #define THRTYPE int
30 #endif
31
32 #include <sys/types.h>
33
34 #include <stdio.h>
35 #include <string.h>
36 #include <stdlib.h>
37 #include <stdarg.h>
38 #include <errno.h>
39
40 #include <limits.h>
41 #include <time.h>
42
43 #if defined(unix) && !defined(PRODUCT)
44 #include "pthread.h"
45 #define THREAD_SELF ((THRTYPE)pthread_self())
46 #endif
47
48 #include "defines.h"
49 #include "bytes.h"
50 #include "utils.h"
51 #include "coding.h"
52 #include "bands.h"
53
54 #include "constants.h"
55
56 #include "zip.h"
57
58 #include "unpack.h"
59
60
61 int main(int argc, char **argv) {
62 return unpacker::run(argc, argv);
63 }
64
65 // Single-threaded, implementation, not reentrant.
66 // Includes a weak error check against MT access.
67 #ifndef THREAD_SELF
68 #define THREAD_SELF ((THRTYPE) 0)
69 #endif
70 NOT_PRODUCT(static THRTYPE uThread = -1;)
71
72 unpacker* unpacker::non_mt_current = null;
73 unpacker* unpacker::current() {
74 assert(uThread == THREAD_SELF);
75 return non_mt_current;
76 }
77 static void set_current_unpacker(unpacker* u) {
78 unpacker::non_mt_current = u;
79 assert(((uThread = (u == null) ? (THRTYPE) -1 : THREAD_SELF),
80 true));
81 }
82
83 // Callback for fetching data, Unix style.
84 static jlong read_input_via_stdio(unpacker* u,
85 void* buf, jlong minlen, jlong maxlen) {
86 assert(minlen <= maxlen); // don't talk nonsense
87 jlong numread = 0;
88 char* bufptr = (char*) buf;
89 while (numread < minlen) {
90 // read available input, up to buf.length or maxlen
91 int readlen = (1<<16);
92 if (readlen > (maxlen - numread))
93 readlen = (int)(maxlen - numread);
94 int nr = 0;
95 if (u->infileptr != null) {
96 nr = (int)fread(bufptr, 1, readlen, u->infileptr);
97 } else {
98 #ifndef WIN32
99 // we prefer unbuffered inputs
100 nr = (int)read(u->infileno, bufptr, readlen);
101 #else
102 nr = (int)fread(bufptr, 1, readlen, stdin);
103 #endif
104 }
105 if (nr <= 0) {
106 if (errno != EINTR)
107 break;
108 nr = 0;
109 }
110 numread += nr;
111 bufptr += nr;
112 assert(numread <= maxlen);
113 }
114 //fprintf(u->errstrm, "readInputFn(%d,%d) => %d\n",
115 // (int)minlen, (int)maxlen, (int)numread);
116 return numread;
117 }
118
119 enum { EOF_MAGIC = 0, BAD_MAGIC = -1 };
120 static int read_magic(unpacker* u, char peek[], int peeklen) {
121 assert(peeklen == 4); // magic numbers are always 4 bytes
122 jlong nr = (u->read_input_fn)(u, peek, peeklen, peeklen);
123 if (nr != peeklen) {
124 return (nr == 0) ? EOF_MAGIC : BAD_MAGIC;
125 }
126 int magic = 0;
127 for (int i = 0; i < peeklen; i++) {
128 magic <<= 8;
129 magic += peek[i] & 0xFF;
130 }
131 return magic;
132 }
133
134 static void setup_gzin(unpacker* u) {
135 gunzip* gzin = NEW(gunzip, 1);
136 gzin->init(u);
137 }
138
139 static const char* nbasename(const char* progname) {
140 const char* slash = strrchr(progname, '/');
141 if (slash != null) progname = ++slash;
142 return progname;
143 }
144
145 static const char* usage_lines[] = {
146 "Usage: %s [-opt... | --option=value]... x.pack[.gz] y.jar\n",
147 "\n",
148 "Unpacking Options\n",
149 " -H{h}, --deflate-hint={h} override transmitted deflate hint: true, false, or keep (default)\n",
150 " -r, --remove-pack-file remove input file after unpacking\n",
151 " -v, --verbose increase program verbosity\n",
152 " -q, --quiet set verbosity to lowest level\n",
153 " -l{F}, --log-file={F} output to the given log file, or '-' for standard output (default)\n",
154 " -?, -h, --help print this message\n",
155 " -V, --version print program version\n",
156 " -J{X} Java VM argument (ignored)\n",
157 null
158 };
159
160 static void usage(unpacker* u, const char* progname, bool full = false) {
161 // WinMain does not set argv[0] to the progrname
162 progname = (progname != null) ? nbasename(progname) : "unpack200";
163 for (int i = 0; usage_lines[i] != null; i++) {
164 fprintf(u->errstrm, usage_lines[i], progname);
165 if (!full) {
166 fprintf(u->errstrm,
167 "(For more information, run %s --help .)\n", progname);
168 break;
169 }
170 }
171 }
172
173 // argument parsing
174 static char** init_args(int argc, char** argv, int &envargc) {
175 const char* env = getenv("UNPACK200_FLAGS");
176 ptrlist envargs;
177 envargs.init();
178 if (env != null) {
179 char* buf = (char*) strdup(env);
180 const char* delim = "\n\t ";
181 for (char* p = strtok(buf, delim); p != null; p = strtok(null, delim)) {
182 envargs.add(p);
183 }
184 }
185 // allocate extra margin at both head and tail
186 char** argp = NEW(char*, envargs.length()+argc+1);
187 char** argp0 = argp;
188 int i;
189 for (i = 0; i < envargs.length(); i++) {
190 *argp++ = (char*) envargs.get(i);
191 }
192 for (i = 1; i < argc; i++) {
193 // note: skip argv[0] (program name)
194 *argp++ = (char*) strdup(argv[i]); // make a scratch copy
195 }
196 *argp = null; // sentinel
197 envargc = envargs.length(); // report this count to next_arg
198 envargs.free();
199 return argp0;
200 }
201
202 static int strpcmp(const char* str, const char* pfx) {
203 return strncmp(str, pfx, strlen(pfx));
204 }
205
206 static const char flag_opts[] = "vqrVh?";
207 static const char string_opts[] = "HlJ";
208
209 static int next_arg(char** &argp) {
210 char* arg = *argp;
211 if (arg == null || arg[0] != '-') { // end of option list
212 return 0;
213 }
214 //printf("opt: %s\n", arg);
215 char ach = arg[1];
216 if (ach == '\0') {
217 // ++argp; // do not pop this arg
218 return 0; // bare "-" is stdin/stdout
219 } else if (arg[1] == '-') { // --foo option
220 static const char* keys[] = {
221 "Hdeflate-hint=",
222 "vverbose",
223 "qquiet",
224 "rremove-pack-file",
225 "llog-file=",
226 "Vversion",
227 "hhelp",
228 null };
229 if (arg[2] == '\0') { // end of option list
230 ++argp; // pop the "--"
231 return 0;
232 }
233 for (int i = 0; keys[i] != null; i++) {
234 const char* key = keys[i];
235 char kch = *key++;
236 if (strchr(key, '=') == null) {
237 if (!strcmp(arg+2, key)) {
238 ++argp; // pop option arg
239 return kch;
240 }
241 } else {
242 if (!strpcmp(arg+2, key)) {
243 *argp += 2 + strlen(key); // remove "--"+key from arg
244 return kch;
245 }
246 }
247 }
248 } else if (strchr(flag_opts, ach) != null) { // plain option
249 if (arg[2] == '\0') {
250 ++argp;
251 } else {
252 // in-place edit of "-vxyz" to "-xyz"
253 arg += 1; // skip original '-'
254 arg[0] = '-';
255 *argp = arg;
256 }
257 //printf(" key => %c\n", ach);
258 return ach;
259 } else if (strchr(string_opts, ach) != null) { // argument-bearing option
260 if (arg[2] == '\0') {
261 if (argp[1] == null) return -1; // no next arg
262 ++argp; // leave the argument in place
263 } else {
264 // in-place edit of "-Hxyz" to "xyz"
265 arg += 2; // skip original '-H'
266 *argp = arg;
267 }
268 //printf(" key => %c\n", ach);
269 return ach;
270 }
271 return -1; // bad argument
272 }
273
274 static const char sccsver[] = "1.30, 07/05/05";
275
276 // Usage: unpackage input.pack output.jar
277 int unpacker::run(int argc, char **argv) {
278 unpacker u;
279 u.init(read_input_via_stdio);
280 set_current_unpacker(&u);
281
282 jar jarout;
283 jarout.init(&u);
284
285 int envargc = 0;
286 char** argbuf = init_args(argc, argv, envargc);
287 char** arg0 = argbuf+envargc;
288 char** argp = argbuf;
289
290 int verbose = 0;
291 char* logfile = null;
292
293 for (;;) {
294 const char* arg = (*argp == null)? "": u.saveStr(*argp);
295 bool isenvarg = (argp < arg0);
296 int ach = next_arg(argp);
297 bool hasoptarg = (ach != 0 && strchr(string_opts, ach) != null);
298 if (ach == 0 && argp >= arg0) break;
299 if (isenvarg && argp == arg0 && hasoptarg) ach = 0; // don't pull from cmdline
300 switch (ach) {
301 case 'H': u.set_option(UNPACK_DEFLATE_HINT,*argp++); break;
302 case 'v': ++verbose; break;
303 case 'q': verbose = 0; break;
304 case 'r': u.set_option(UNPACK_REMOVE_PACKFILE,"1"); break;
305 case 'l': logfile = *argp++; break;
306 case 'J': argp += 1; break; // skip ignored -Jxxx parameter
307
308 case 'V':
309 fprintf(u.errstrm, VERSION_STRING, nbasename(argv[0]), sccsver);
310 exit(0);
311
312 case 'h':
313 case '?':
314 usage(&u, argv[0], true);
315 exit(1);
316
317 default:
318 const char* inenv = isenvarg? " in ${UNPACK200_FLAGS}": "";
319 if (hasoptarg)
320 fprintf(u.errstrm, "Missing option string%s: %s\n", inenv, arg);
321 else
322 fprintf(u.errstrm, "Unrecognized argument%s: %s\n", inenv, arg);
323 usage(&u, argv[0]);
324 exit(2);
325 }
326 }
327
328 if (verbose != 0) {
329 u.set_option(DEBUG_VERBOSE, u.saveIntStr(verbose));
330 }
331 if (logfile != null) {
332 u.set_option(UNPACK_LOG_FILE, logfile);
333 }
334
335 u.redirect_stdio();
336
337 const char* source_file = *argp++;
338 const char* destination_file = *argp++;
339
340 if (source_file == null || destination_file == null || *argp != null) {
341 usage(&u, argv[0]);
342 exit(2);
343 }
344
345 if (verbose != 0) {
346 fprintf(u.errstrm,
347 "Unpacking from %s to %s\n", source_file, destination_file);
348 }
349 bool& remove_source = u.remove_packfile;
350
351 if (strcmp(source_file, "-") == 0) {
352 remove_source = false;
353 u.infileno = fileno(stdin);
354 } else {
355 u.infileptr = fopen(source_file, "rb");
356 if (u.infileptr == null) {
357 fprintf(u.errstrm,
358 "Error: Could not open input file: %s\n", source_file);
359 exit(3); // Called only from the native standalone unpacker
360 }
361 }
362
363 if (strcmp(destination_file, "-") == 0) {
364 jarout.jarfp = stdout;
365 if (u.errstrm == stdout) // do not mix output
366 u.set_option(UNPACK_LOG_FILE, LOGFILE_STDERR);
367 } else {
368 jarout.openJarFile(destination_file);
369 assert(jarout.jarfp != null);
370 }
371
372 if (verbose != 0)
373 u.dump_options();
374
375 char peek[4];
376 int magic;
377
378 // check for GZIP input
379 magic = read_magic(&u, peek, (int)sizeof(peek));
380 if ((magic & GZIP_MAGIC_MASK) == GZIP_MAGIC) {
381 // Oops; must slap an input filter on this data.
382 setup_gzin(&u);
383 u.gzin->start(magic);
384 if (!u.aborting()) {
385 u.start();
386 }
387 } else {
388 u.start(peek, sizeof(peek));
389 }
390
391 // Note: The checks to u.aborting() are necessary to gracefully
392 // terminate processing when the first segment throws an error.
393
394 for (;;) {
395 if (u.aborting()) break;
396
397 // Each trip through this loop unpacks one segment
398 // and then resets the unpacker.
399 for (unpacker::file* filep; (filep = u.get_next_file()) != null; ) {
400 if (u.aborting()) break;
401 u.write_file_to_jar(filep);
402 }
403 if (u.aborting()) break;
404
405 // Peek ahead for more data.
406 magic = read_magic(&u, peek, (int)sizeof(peek));
407 if (magic != (int)JAVA_PACKAGE_MAGIC) {
408 if (magic != EOF_MAGIC)
409 u.abort("garbage after end of pack archive");
410 break; // all done
411 }
412
413 // Release all storage from parsing the old segment.
414 u.reset();
415
416 // Restart, beginning with the peek-ahead.
417 u.start(peek, sizeof(peek));
418 }
419
420
421
422 int status = 0;
423 if (u.aborting()) {
424 fprintf(u.errstrm, "Error: %s\n", u.get_abort_message());
425 status = 1;
426 }
427
428 if (u.infileptr != null) {
429 fclose(u.infileptr);
430 u.infileptr = null;
431 }
432
433 if (!u.aborting() && remove_source)
434 remove(source_file);
435
436 if (verbose != 0) {
437 fprintf(u.errstrm, "unpacker completed with status=%d\n", status);
438 }
439
440 u.finish();
441
442 u.free(); // tidy up malloc blocks
443 set_current_unpacker(null); // clean up global pointer
444
445 return status;
446 }