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Commit | Line | Data |
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61522196 | 1 | /* Copyright (c) 2009, 2010, 2011, 2013 Chris Faylor |
086dc27f CF |
2 | |
3 | All rights reserved. | |
4 | ||
5 | Redistribution and use in source and binary forms, with or without | |
6 | modification, are permitted provided that the following conditions are met: | |
7 | ||
6e623e93 CV |
8 | 1. Redistributions of source code must retain the above copyright |
9 | notice, this list of conditions and the following disclaimer. | |
10 | 2. Redistributions in binary form must reproduce the above copyright | |
11 | notice, this list of conditions and the following disclaimer in the | |
12 | documentation and/or other materials provided with the distribution. | |
086dc27f CF |
13 | |
14 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS | |
15 | IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
16 | TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
17 | PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
18 | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
19 | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED | |
20 | TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
21 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
22 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
23 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
24 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
25 | */ | |
26 | ||
27 | #include <errno.h> | |
28 | #include <getopt.h> | |
29 | #include <stdarg.h> | |
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
32 | #include <string.h> | |
2e13058e | 33 | #include <wchar.h> |
2e13058e | 34 | #include <locale.h> |
086dc27f | 35 | #include <sys/cygwin.h> |
92b499ac | 36 | #include <cygwin/version.h> |
086dc27f | 37 | #include <unistd.h> |
962acfe5 | 38 | #include <libgen.h> |
086dc27f | 39 | |
d21b6359 | 40 | #define _WIN32_WINNT 0x0a00 |
086dc27f | 41 | #include <windows.h> |
e3ca53d9 | 42 | #include <winternl.h> |
086dc27f CF |
43 | #include <imagehlp.h> |
44 | #include <psapi.h> | |
45 | ||
086dc27f CF |
46 | struct option longopts[] = |
47 | { | |
92b499ac CV |
48 | {"help", no_argument, NULL, 'h'}, |
49 | {"verbose", no_argument, NULL, 'v'}, | |
50 | {"version", no_argument, NULL, 'V'}, | |
086dc27f CF |
51 | {"data-relocs", no_argument, NULL, 'd'}, |
52 | {"function-relocs", no_argument, NULL, 'r'}, | |
53 | {"unused", no_argument, NULL, 'u'}, | |
54 | {0, no_argument, NULL, 0} | |
55 | }; | |
92b499ac | 56 | const char *opts = "dhruvV"; |
086dc27f | 57 | |
2e13058e | 58 | static int process_file (const wchar_t *); |
e3ca53d9 | 59 | static void *drive_map; |
962acfe5 | 60 | |
086dc27f | 61 | static int |
92b499ac | 62 | error (const char *fmt, ...) |
086dc27f CF |
63 | { |
64 | va_list ap; | |
65 | va_start (ap, fmt); | |
66 | fprintf (stderr, "ldd: "); | |
67 | vfprintf (stderr, fmt, ap); | |
68 | fprintf (stderr, "\nTry `ldd --help' for more information.\n"); | |
69 | exit (1); | |
70 | } | |
71 | ||
e7fca6f8 | 72 | static void __attribute__ ((__noreturn__)) |
92b499ac CV |
73 | usage () |
74 | { | |
75 | printf ("Usage: %s [OPTION]... FILE...\n\ | |
76 | \n\ | |
77 | Print shared library dependencies\n\ | |
78 | \n\ | |
79 | -h, --help print this help and exit\n\ | |
80 | -V, --version print version information and exit\n\ | |
81 | -r, --function-relocs process data and function relocations\n\ | |
82 | (currently unimplemented)\n\ | |
83 | -u, --unused print unused direct dependencies\n\ | |
84 | (currently unimplemented)\n\ | |
85 | -v, --verbose print all information\n\ | |
86 | (currently unimplemented)\n", | |
87 | program_invocation_short_name); | |
e7fca6f8 | 88 | exit (0); |
92b499ac CV |
89 | } |
90 | ||
91 | static void | |
92 | print_version () | |
93 | { | |
94 | printf ("ldd (cygwin) %d.%d.%d\n" | |
1b23b30b CF |
95 | "Print shared library dependencies\n" |
96 | "Copyright (C) 2009 - %s Chris Faylor\n" | |
97 | "This is free software; see the source for copying conditions. There is NO\n" | |
92b499ac | 98 | "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n", |
1b23b30b CF |
99 | CYGWIN_VERSION_DLL_MAJOR / 1000, |
100 | CYGWIN_VERSION_DLL_MAJOR % 1000, | |
101 | CYGWIN_VERSION_DLL_MINOR, | |
102 | strrchr (__DATE__, ' ') + 1); | |
92b499ac CV |
103 | } |
104 | ||
086dc27f CF |
105 | #define print_errno_error_and_return(__fn) \ |
106 | do {\ | |
107 | fprintf (stderr, "ldd: %s: %s\n", (__fn), strerror (errno));\ | |
108 | return 1;\ | |
109 | } while (0) | |
110 | ||
111 | #define set_errno_and_return(x) \ | |
112 | do {\ | |
113 | cygwin_internal (CW_SETERRNO, __FILE__, __LINE__ - 2);\ | |
114 | return (x);\ | |
115 | } while (0) | |
116 | ||
117 | ||
118 | static HANDLE hProcess; | |
119 | ||
c8fe6dc4 CF |
120 | static struct filelist |
121 | { | |
122 | struct filelist *next; | |
123 | char *name; | |
124 | } *head; | |
125 | ||
126 | static bool | |
127 | saw_file (char *name) | |
128 | { | |
129 | filelist *p; | |
130 | ||
131 | for (p = head; p; p = p->next) | |
132 | if (strcasecmp (name, p->name) == 0) | |
133 | return true; | |
134 | ||
135 | p = (filelist *) malloc(sizeof (struct filelist)); | |
136 | p->next = head; | |
137 | p->name = strdup (name); | |
138 | head = p; | |
139 | return false; | |
140 | } | |
141 | ||
2e13058e | 142 | static wchar_t * |
d5e4f55b CF |
143 | get_module_filename (HANDLE hp, HMODULE hm) |
144 | { | |
145 | size_t len; | |
2e13058e | 146 | wchar_t *buf = NULL; |
d5e4f55b | 147 | DWORD res; |
2e13058e | 148 | for (len = 1024; (res = GetModuleFileNameExW (hp, hm, (buf = (wchar_t *) realloc (buf, len * sizeof (wchar_t))), len)) == len; len += 1024) |
d5e4f55b CF |
149 | continue; |
150 | if (!res) | |
151 | { | |
152 | free (buf); | |
153 | buf = NULL; | |
154 | } | |
155 | return buf; | |
156 | } | |
157 | ||
e3ca53d9 MG |
158 | static BOOL |
159 | GetFileNameFromHandle(HANDLE hFile, WCHAR pszFilename[MAX_PATH+1]) | |
160 | { | |
161 | BOOL result = FALSE; | |
162 | ULONG len = 0; | |
163 | OBJECT_NAME_INFORMATION *ntfn = (OBJECT_NAME_INFORMATION *) alloca (65536); | |
164 | NTSTATUS status = NtQueryObject (hFile, ObjectNameInformation, | |
165 | ntfn, 65536, &len); | |
166 | if (NT_SUCCESS (status)) | |
167 | { | |
168 | PWCHAR win32path = ntfn->Name.Buffer; | |
169 | win32path[ntfn->Name.Length / sizeof (WCHAR)] = L'\0'; | |
170 | ||
171 | /* NtQueryObject returns a native NT path. (Try to) convert to Win32. */ | |
172 | if (!drive_map) | |
173 | drive_map = (void *) cygwin_internal (CW_ALLOC_DRIVE_MAP); | |
174 | if (drive_map) | |
175 | win32path = (PWCHAR) cygwin_internal (CW_MAP_DRIVE_MAP, drive_map, | |
176 | win32path); | |
177 | pszFilename[0] = L'\0'; | |
178 | wcsncat (pszFilename, win32path, MAX_PATH); | |
179 | result = TRUE; | |
180 | } | |
181 | return result; | |
182 | } | |
183 | ||
2e13058e CF |
184 | static wchar_t * |
185 | load_dll (const wchar_t *fn) | |
d5e4f55b | 186 | { |
2e13058e | 187 | wchar_t *buf = get_module_filename (GetCurrentProcess (), NULL); |
d5e4f55b CF |
188 | if (!buf) |
189 | { | |
61522196 CV |
190 | printf ("ldd: GetModuleFileName returned an error %u\n", |
191 | (unsigned int) GetLastError ()); | |
d5e4f55b CF |
192 | exit (1); /* FIXME */ |
193 | } | |
d5e4f55b | 194 | |
2e13058e CF |
195 | wchar_t *newbuf = (wchar_t *) malloc ((sizeof (L"\"\" -- ") + wcslen (buf) + wcslen (fn)) * sizeof (wchar_t)); |
196 | newbuf[0] = L'"'; | |
197 | wcscpy (newbuf + 1, buf); | |
198 | wchar_t *p = wcsstr (newbuf, L"\\ldd"); | |
199 | if (!p) | |
200 | { | |
201 | printf ("ldd: can't parse my own filename \"%ls\"\n", buf); | |
202 | exit (1); | |
203 | } | |
204 | p[3] = L'h'; | |
205 | wcscat (newbuf, L"\" -- "); | |
206 | wcscat (newbuf, fn); | |
207 | free (buf); | |
208 | return newbuf; | |
209 | } | |
d5e4f55b | 210 | |
086dc27f | 211 | static int |
2e13058e | 212 | start_process (const wchar_t *fn, bool& isdll) |
086dc27f | 213 | { |
2e13058e | 214 | STARTUPINFOW si = {}; |
086dc27f CF |
215 | PROCESS_INFORMATION pi; |
216 | si.cb = sizeof (si); | |
2e13058e | 217 | wchar_t *cmd; |
abd9714a YS |
218 | /* OCaml natdynlink plugins (.cmxs) cannot be handled by ldd because they |
219 | can only be loaded by flexdll_dlopen() */ | |
220 | if (wcslen (fn) < 4 || (wcscasecmp (wcschr (fn, L'\0') - 4, L".dll") != 0 | |
221 | && wcscasecmp (wcschr (fn, L'\0') - 4, L".oct") != 0 | |
222 | && wcscasecmp (wcschr (fn, L'\0') - 3, L".so") != 0)) | |
086dc27f | 223 | { |
2e13058e | 224 | cmd = wcsdup (fn); |
d5e4f55b CF |
225 | isdll = false; |
226 | } | |
227 | else | |
228 | { | |
229 | cmd = load_dll (fn); | |
230 | isdll = true; | |
231 | } | |
2e13058e | 232 | if (CreateProcessW (NULL, cmd, NULL, NULL, FALSE, DEBUG_ONLY_THIS_PROCESS, NULL, NULL, &si, &pi)) |
d5e4f55b CF |
233 | { |
234 | free (cmd); | |
086dc27f CF |
235 | hProcess = pi.hProcess; |
236 | DebugSetProcessKillOnExit (true); | |
237 | return 0; | |
238 | } | |
239 | ||
d5e4f55b | 240 | free (cmd); |
086dc27f CF |
241 | set_errno_and_return (1); |
242 | } | |
243 | ||
086dc27f CF |
244 | struct dlls |
245 | { | |
246 | LPVOID lpBaseOfDll; | |
e3ca53d9 | 247 | HANDLE hFile; |
086dc27f CF |
248 | struct dlls *next; |
249 | }; | |
250 | ||
962acfe5 CF |
251 | #define SLOP strlen (" (?)") |
252 | char * | |
2e13058e | 253 | tocyg (wchar_t *win_fn) |
962acfe5 | 254 | { |
2e13058e | 255 | ssize_t cwlen = cygwin_conv_path (CCP_WIN_W_TO_POSIX, win_fn, NULL, 0); |
962acfe5 CF |
256 | char *fn; |
257 | if (cwlen <= 0) | |
2e13058e CF |
258 | { |
259 | int len = wcstombs (NULL, win_fn, 0) + 1; | |
260 | if ((fn = (char *) malloc (len))) | |
261 | wcstombs (fn, win_fn, len); | |
262 | } | |
962acfe5 CF |
263 | else |
264 | { | |
265 | char *fn_cyg = (char *) malloc (cwlen + SLOP + 1); | |
2e13058e | 266 | if (cygwin_conv_path (CCP_WIN_W_TO_POSIX, win_fn, fn_cyg, cwlen) == 0) |
962acfe5 CF |
267 | fn = fn_cyg; |
268 | else | |
269 | { | |
270 | free (fn_cyg); | |
2e13058e CF |
271 | int len = wcstombs (NULL, win_fn, 0); |
272 | fn = (char *) malloc (len + SLOP + 1); | |
273 | wcstombs (fn, win_fn, len + SLOP + 1); | |
962acfe5 CF |
274 | } |
275 | } | |
276 | return fn; | |
277 | } | |
278 | ||
2e13058e | 279 | #define CYGWIN_DLL_LEN (wcslen (L"\\cygwin1.dll")) |
086dc27f | 280 | static int |
2e13058e | 281 | print_dlls (dlls *dll, const wchar_t *dllfn, const wchar_t *process_fn) |
086dc27f | 282 | { |
c8fe6dc4 | 283 | head = NULL; /* FIXME: memory leak */ |
086dc27f CF |
284 | while ((dll = dll->next)) |
285 | { | |
286 | char *fn; | |
2e13058e | 287 | wchar_t *fullpath = get_module_filename (hProcess, (HMODULE) dll->lpBaseOfDll); |
d5e4f55b | 288 | if (!fullpath) |
e3ca53d9 MG |
289 | { |
290 | // if no path found yet, try getting it from an open handle to the DLL | |
291 | wchar_t dllname[MAX_PATH+1]; | |
292 | if (GetFileNameFromHandle (dll->hFile, dllname)) | |
293 | { | |
294 | fn = tocyg (dllname); | |
295 | saw_file (basename (fn)); | |
296 | } | |
297 | else | |
298 | fn = strdup ("???"); | |
299 | } | |
2e13058e CF |
300 | else if (dllfn && wcscmp (fullpath, dllfn) == 0) |
301 | { | |
302 | free (fullpath); | |
303 | continue; | |
304 | } | |
086dc27f | 305 | else |
d5e4f55b | 306 | { |
2e13058e | 307 | fn = tocyg (fullpath); |
c8fe6dc4 | 308 | saw_file (basename (fn)); |
d5e4f55b CF |
309 | free (fullpath); |
310 | } | |
962acfe5 | 311 | printf ("\t%s => %s (%p)\n", basename (fn), fn, dll->lpBaseOfDll); |
086dc27f CF |
312 | free (fn); |
313 | } | |
962acfe5 CF |
314 | if (process_fn) |
315 | return process_file (process_fn); | |
086dc27f CF |
316 | return 0; |
317 | } | |
318 | ||
319 | static int | |
320 | report (const char *in_fn, bool multiple) | |
321 | { | |
322 | if (multiple) | |
323 | printf ("%s:\n", in_fn); | |
324 | char *fn = realpath (in_fn, NULL); | |
962acfe5 CF |
325 | if (!fn) |
326 | print_errno_error_and_return (in_fn); | |
327 | ||
2e13058e | 328 | ssize_t len = cygwin_conv_path (CCP_POSIX_TO_WIN_W, fn, NULL, 0); |
962acfe5 CF |
329 | if (len <= 0) |
330 | print_errno_error_and_return (fn); | |
331 | ||
d5e4f55b | 332 | bool isdll; |
16e1c98c CV |
333 | wchar_t fn_win[len + 1]; |
334 | if (cygwin_conv_path (CCP_POSIX_TO_WIN_W, fn, fn_win, len)) | |
962acfe5 CF |
335 | print_errno_error_and_return (fn); |
336 | ||
d5e4f55b | 337 | if (!fn || start_process (fn_win, isdll)) |
086dc27f CF |
338 | print_errno_error_and_return (in_fn); |
339 | ||
340 | DEBUG_EVENT ev; | |
341 | ||
086dc27f CF |
342 | dlls dll_list = {}; |
343 | dlls *dll_last = &dll_list; | |
2e13058e | 344 | const wchar_t *process_fn = NULL; |
a9da3e4e JT |
345 | |
346 | int res = 0; | |
347 | ||
086dc27f CF |
348 | while (1) |
349 | { | |
2e13058e CF |
350 | bool exitnow = false; |
351 | DWORD cont = DBG_CONTINUE; | |
352 | if (!WaitForDebugEvent (&ev, INFINITE)) | |
353 | break; | |
086dc27f CF |
354 | switch (ev.dwDebugEventCode) |
355 | { | |
85db2173 CV |
356 | case CREATE_PROCESS_DEBUG_EVENT: |
357 | if (!isdll) | |
358 | { | |
359 | PIMAGE_DOS_HEADER dos_header = (PIMAGE_DOS_HEADER) alloca (4096); | |
360 | PIMAGE_NT_HEADERS nt_header; | |
361 | PVOID entry_point; | |
362 | static const unsigned char int3 = 0xcc; | |
363 | SIZE_T bytes; | |
364 | ||
365 | if (!ReadProcessMemory (hProcess, | |
366 | ev.u.CreateProcessInfo.lpBaseOfImage, | |
367 | dos_header, 4096, &bytes)) | |
368 | print_errno_error_and_return (in_fn); | |
369 | ||
370 | nt_header = PIMAGE_NT_HEADERS (PBYTE (dos_header) | |
371 | + dos_header->e_lfanew); | |
372 | entry_point = (PVOID) | |
373 | ((caddr_t) ev.u.CreateProcessInfo.lpBaseOfImage | |
374 | + nt_header->OptionalHeader.AddressOfEntryPoint); | |
375 | ||
376 | if (!WriteProcessMemory (hProcess, entry_point, &int3, 1, &bytes)) | |
377 | print_errno_error_and_return (in_fn); | |
378 | } | |
379 | break; | |
086dc27f | 380 | case LOAD_DLL_DEBUG_EVENT: |
086dc27f CF |
381 | dll_last->next = (dlls *) malloc (sizeof (dlls)); |
382 | dll_last->next->lpBaseOfDll = ev.u.LoadDll.lpBaseOfDll; | |
e3ca53d9 | 383 | dll_last->next->hFile = ev.u.LoadDll.hFile; |
086dc27f CF |
384 | dll_last->next->next = NULL; |
385 | dll_last = dll_last->next; | |
386 | break; | |
387 | case EXCEPTION_DEBUG_EVENT: | |
d5e4f55b CF |
388 | switch (ev.u.Exception.ExceptionRecord.ExceptionCode) |
389 | { | |
23ad79d7 CV |
390 | case STATUS_ENTRYPOINT_NOT_FOUND: |
391 | /* A STATUS_ENTRYPOINT_NOT_FOUND might be encountered right after | |
392 | loading all DLLs. We have to handle it here, otherwise ldd | |
393 | runs into an endless loop. */ | |
394 | goto print_and_exit; | |
d5e4f55b CF |
395 | case STATUS_DLL_NOT_FOUND: |
396 | process_fn = fn_win; | |
397 | break; | |
398 | case STATUS_BREAKPOINT: | |
399 | if (!isdll) | |
9f54cead | 400 | TerminateProcess (hProcess, 0); |
d5e4f55b CF |
401 | break; |
402 | } | |
a9da3e4e JT |
403 | if (ev.u.Exception.ExceptionRecord.ExceptionFlags & |
404 | EXCEPTION_NONCONTINUABLE) { | |
405 | res = 1; | |
406 | goto print_and_exit; | |
407 | } | |
d5e4f55b CF |
408 | break; |
409 | case EXIT_PROCESS_DEBUG_EVENT: | |
f4a1b6ae JT |
410 | if (ev.u.ExitProcess.dwExitCode != 0) |
411 | process_fn = fn_win; | |
23ad79d7 | 412 | print_and_exit: |
2e13058e CF |
413 | print_dlls (&dll_list, isdll ? fn_win : NULL, process_fn); |
414 | exitnow = true; | |
086dc27f CF |
415 | break; |
416 | default: | |
417 | break; | |
418 | } | |
2e13058e | 419 | if (!ContinueDebugEvent (ev.dwProcessId, ev.dwThreadId, cont)) |
086dc27f CF |
420 | { |
421 | cygwin_internal (CW_SETERRNO, __FILE__, __LINE__ - 2); | |
422 | print_errno_error_and_return (in_fn); | |
423 | } | |
2e13058e CF |
424 | if (exitnow) |
425 | break; | |
086dc27f CF |
426 | } |
427 | ||
a9da3e4e | 428 | return res; |
086dc27f CF |
429 | } |
430 | ||
086dc27f CF |
431 | int |
432 | main (int argc, char **argv) | |
433 | { | |
434 | int optch; | |
73535010 CV |
435 | |
436 | /* Use locale from environment. If not set or set to "C", use UTF-8. */ | |
437 | setlocale (LC_CTYPE, ""); | |
438 | if (!strcmp (setlocale (LC_CTYPE, NULL), "C")) | |
439 | setlocale (LC_CTYPE, "en_US.UTF-8"); | |
92b499ac | 440 | while ((optch = getopt_long (argc, argv, opts, longopts, NULL)) != -1) |
086dc27f CF |
441 | switch (optch) |
442 | { | |
443 | case 'd': | |
444 | case 'r': | |
445 | case 'u': | |
92b499ac | 446 | error ("option not implemented `-%c'", optch); |
086dc27f | 447 | exit (1); |
92b499ac CV |
448 | case 'h': |
449 | usage (); | |
92b499ac CV |
450 | case 'V': |
451 | print_version (); | |
452 | return 0; | |
453 | default: | |
454 | fprintf (stderr, "Try `%s --help' for more information.\n", | |
455 | program_invocation_short_name); | |
456 | return 1; | |
086dc27f CF |
457 | } |
458 | argv += optind; | |
459 | if (!*argv) | |
92b499ac | 460 | error ("missing file arguments"); |
086dc27f CF |
461 | |
462 | int ret = 0; | |
463 | bool multiple = !!argv[1]; | |
464 | char *fn; | |
465 | while ((fn = *argv++)) | |
466 | if (report (fn, multiple)) | |
467 | ret = 1; | |
e3ca53d9 MG |
468 | if (drive_map) |
469 | cygwin_internal (CW_FREE_DRIVE_MAP, drive_map); | |
086dc27f CF |
470 | exit (ret); |
471 | } | |
962acfe5 | 472 | |
962acfe5 CF |
473 | static bool printing = false; |
474 | ||
962acfe5 CF |
475 | |
476 | /* dump of import directory | |
477 | section begins at pointer 'section base' | |
478 | section RVA is 'section_rva' | |
479 | import directory begins at pointer 'imp' */ | |
480 | static int | |
481 | dump_import_directory (const void *const section_base, | |
482 | const DWORD section_rva, | |
483 | const IMAGE_IMPORT_DESCRIPTOR *imp) | |
484 | { | |
485 | /* get memory address given the RVA */ | |
486 | #define adr(rva) ((const void*) ((char*) section_base+((DWORD) (rva))-section_rva)) | |
487 | ||
488 | /* continue until address inaccessible or there's no DLL name */ | |
489 | for (; !IsBadReadPtr (imp, sizeof (*imp)) && imp->Name; imp++) | |
490 | { | |
2e13058e CF |
491 | wchar_t full_path[PATH_MAX]; |
492 | wchar_t *dummy; | |
962acfe5 CF |
493 | char *fn = (char *) adr (imp->Name); |
494 | ||
495 | if (saw_file (fn)) | |
496 | continue; | |
497 | ||
2e13058e CF |
498 | int len = mbstowcs (NULL, fn, 0); |
499 | if (len <= 0) | |
1b23b30b | 500 | continue; |
2e13058e CF |
501 | wchar_t fnw[len + 1]; |
502 | mbstowcs (fnw, fn, len + 1); | |
962acfe5 CF |
503 | /* output DLL's name */ |
504 | char *print_fn; | |
2e13058e | 505 | if (!SearchPathW (NULL, fnw, NULL, PATH_MAX, full_path, &dummy)) |
962acfe5 CF |
506 | { |
507 | print_fn = strdup ("not found"); | |
508 | printing = true; | |
509 | } | |
510 | else if (!printing) | |
511 | continue; | |
512 | else | |
513 | { | |
514 | print_fn = tocyg (full_path); | |
515 | strcat (print_fn, " (?)"); | |
516 | } | |
517 | ||
518 | printf ("\t%s => %s\n", (char *) fn, print_fn); | |
519 | free (print_fn); | |
520 | } | |
521 | #undef adr | |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
526 | /* load a file in RAM (memory-mapped) | |
527 | return pointer to loaded file | |
528 | 0 if no success */ | |
529 | static void * | |
2e13058e | 530 | map_file (const wchar_t *filename) |
962acfe5 CF |
531 | { |
532 | HANDLE hFile, hMapping; | |
533 | void *basepointer; | |
2e13058e | 534 | if ((hFile = CreateFileW (filename, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, |
962acfe5 CF |
535 | 0, OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, 0)) == INVALID_HANDLE_VALUE) |
536 | { | |
2e13058e | 537 | fprintf (stderr, "couldn't open %ls\n", filename); |
962acfe5 CF |
538 | return 0; |
539 | } | |
540 | if (!(hMapping = CreateFileMapping (hFile, 0, PAGE_READONLY | SEC_COMMIT, 0, 0, 0))) | |
541 | { | |
61522196 CV |
542 | fprintf (stderr, "CreateFileMapping failed with windows error %u\n", |
543 | (unsigned int) GetLastError ()); | |
962acfe5 CF |
544 | CloseHandle (hFile); |
545 | return 0; | |
546 | } | |
547 | if (!(basepointer = MapViewOfFile (hMapping, FILE_MAP_READ, 0, 0, 0))) | |
548 | { | |
61522196 CV |
549 | fprintf (stderr, "MapViewOfFile failed with windows error %u\n", |
550 | (unsigned int) GetLastError ()); | |
962acfe5 CF |
551 | CloseHandle (hMapping); |
552 | CloseHandle (hFile); | |
553 | return 0; | |
554 | } | |
1b23b30b | 555 | |
962acfe5 CF |
556 | CloseHandle (hMapping); |
557 | CloseHandle (hFile); | |
558 | ||
559 | return basepointer; | |
560 | } | |
561 | ||
562 | ||
563 | /* this will return a pointer immediatly behind the DOS-header | |
564 | 0 if error */ | |
565 | static void * | |
566 | skip_dos_stub (const IMAGE_DOS_HEADER *dos_ptr) | |
567 | { | |
568 | /* look there's enough space for a DOS-header */ | |
569 | if (IsBadReadPtr (dos_ptr, sizeof (*dos_ptr))) | |
570 | { | |
571 | fprintf (stderr, "not enough space for DOS-header\n"); | |
572 | return 0; | |
573 | } | |
574 | ||
575 | /* validate MZ */ | |
576 | if (dos_ptr->e_magic != IMAGE_DOS_SIGNATURE) | |
577 | { | |
578 | fprintf (stderr, "not a DOS-stub\n"); | |
579 | return 0; | |
580 | } | |
581 | ||
582 | /* ok, then, go get it */ | |
583 | return (char*) dos_ptr + dos_ptr->e_lfanew; | |
584 | } | |
585 | ||
586 | ||
587 | /* find the directory's section index given the RVA | |
588 | Returns -1 if impossible */ | |
589 | static int | |
590 | get_directory_index (const unsigned dir_rva, | |
591 | const unsigned dir_length, | |
592 | const int number_of_sections, | |
593 | const IMAGE_SECTION_HEADER *sections) | |
594 | { | |
595 | int sect; | |
596 | for (sect = 0; sect < number_of_sections; sect++) | |
597 | { | |
598 | /* compare directory RVA to section RVA */ | |
599 | if (sections[sect].VirtualAddress <= dir_rva | |
600 | && dir_rva < sections[sect].VirtualAddress+sections[sect].SizeOfRawData) | |
601 | return sect; | |
602 | } | |
603 | ||
604 | return -1; | |
605 | } | |
606 | ||
607 | /* dump imports of a single file | |
608 | Returns 0 if successful, !=0 else */ | |
609 | static int | |
2e13058e | 610 | process_file (const wchar_t *filename) |
962acfe5 CF |
611 | { |
612 | void *basepointer; /* Points to loaded PE file | |
613 | * This is memory mapped stuff | |
614 | */ | |
615 | int number_of_sections; | |
616 | DWORD import_rva; /* RVA of import directory */ | |
617 | DWORD import_length; /* length of import directory */ | |
618 | int import_index; /* index of section with import directory */ | |
619 | ||
620 | /* ensure byte-alignment for struct tag_header */ | |
621 | #include <pshpack1.h> | |
622 | ||
623 | const struct tag_header | |
624 | { | |
625 | DWORD signature; | |
626 | IMAGE_FILE_HEADER file_head; | |
627 | IMAGE_OPTIONAL_HEADER opt_head; | |
c8fe6dc4 | 628 | IMAGE_SECTION_HEADER section_header[1]; /* an array of unknown length */ |
962acfe5 CF |
629 | } *header; |
630 | ||
631 | /* revert to regular alignment */ | |
632 | #include <poppack.h> | |
633 | ||
962acfe5 CF |
634 | printing = false; |
635 | ||
636 | /* first, load file */ | |
637 | basepointer = map_file (filename); | |
638 | if (!basepointer) | |
639 | { | |
640 | puts ("cannot load file"); | |
641 | return 1; | |
642 | } | |
643 | ||
644 | /* get header pointer; validate a little bit */ | |
c8fe6dc4 | 645 | header = (tag_header *) skip_dos_stub ((IMAGE_DOS_HEADER *) basepointer); |
962acfe5 CF |
646 | if (!header) |
647 | { | |
648 | puts ("cannot skip DOS stub"); | |
649 | UnmapViewOfFile (basepointer); | |
650 | return 2; | |
651 | } | |
652 | ||
653 | /* look there's enough space for PE headers */ | |
654 | if (IsBadReadPtr (header, sizeof (*header))) | |
655 | { | |
656 | puts ("not enough space for PE headers"); | |
657 | UnmapViewOfFile (basepointer); | |
658 | return 3; | |
659 | } | |
660 | ||
661 | /* validate PE signature */ | |
c8fe6dc4 | 662 | if (header->signature != IMAGE_NT_SIGNATURE) |
962acfe5 CF |
663 | { |
664 | puts ("not a PE file"); | |
665 | UnmapViewOfFile (basepointer); | |
666 | return 4; | |
667 | } | |
668 | ||
669 | /* get number of sections */ | |
670 | number_of_sections = header->file_head.NumberOfSections; | |
671 | ||
672 | /* check there are sections... */ | |
c8fe6dc4 | 673 | if (number_of_sections < 1) |
962acfe5 CF |
674 | { |
675 | UnmapViewOfFile (basepointer); | |
676 | return 5; | |
677 | } | |
678 | ||
679 | /* validate there's enough space for section headers */ | |
680 | if (IsBadReadPtr (header->section_header, number_of_sections*sizeof (IMAGE_SECTION_HEADER))) | |
681 | { | |
682 | puts ("not enough space for section headers"); | |
683 | UnmapViewOfFile (basepointer); | |
684 | return 6; | |
685 | } | |
686 | ||
687 | /* get RVA and length of import directory */ | |
688 | import_rva = header->opt_head.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress; | |
689 | import_length = header->opt_head.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].Size; | |
690 | ||
691 | /* check there's stuff to care about */ | |
692 | if (!import_rva || !import_length) | |
693 | { | |
694 | UnmapViewOfFile (basepointer); | |
695 | return 0; /* success! */ | |
696 | } | |
697 | ||
698 | /* get import directory pointer */ | |
699 | import_index = get_directory_index (import_rva,import_length,number_of_sections,header->section_header); | |
700 | ||
701 | /* check directory was found */ | |
c8fe6dc4 | 702 | if (import_index < 0) |
962acfe5 CF |
703 | { |
704 | puts ("couldn't find import directory in sections"); | |
705 | UnmapViewOfFile (basepointer); | |
706 | return 7; | |
707 | } | |
708 | ||
c8fe6dc4 CF |
709 | /* The pointer to the start of the import directory's section */ |
710 | const void *section_address = (char*) basepointer + header->section_header[import_index].PointerToRawData; | |
711 | if (dump_import_directory (section_address, | |
712 | header->section_header[import_index].VirtualAddress, | |
713 | /* the last parameter is the pointer to the import directory: | |
714 | section address + (import RVA - section RVA) | |
715 | The difference is the offset of the import directory in the section */ | |
716 | (const IMAGE_IMPORT_DESCRIPTOR *) ((char *) section_address+import_rva-header->section_header[import_index].VirtualAddress))) | |
717 | { | |
718 | UnmapViewOfFile (basepointer); | |
719 | return 8; | |
720 | } | |
1b23b30b | 721 | |
962acfe5 CF |
722 | UnmapViewOfFile (basepointer); |
723 | return 0; | |
724 | } |