1 /*
2 * Copyright (c) 2011, 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
26 #include <Windows.h>
27 #include <io.h>
28 #include <stdio.h>
29 #include <string.h>
30 #include <malloc.h>
31
32 void report_error()
33 {
34 LPVOID lpMsgBuf;
35 DWORD dw = GetLastError();
36
37 FormatMessage(
38 FORMAT_MESSAGE_ALLOCATE_BUFFER |
39 FORMAT_MESSAGE_FROM_SYSTEM |
40 FORMAT_MESSAGE_IGNORE_INSERTS,
41 NULL,
42 dw,
43 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
44 (LPTSTR) &lpMsgBuf,
45 0,
46 NULL);
47
48 fprintf(stderr,
49 "Could not start process! Failed with error %d: %s\n",
50 dw, lpMsgBuf);
51
52 LocalFree(lpMsgBuf);
53 }
54
55 /*
56 * Test if pos points to /cygdrive/_/ where _ can
57 * be any character.
58 */
59 int is_cygdrive_here(int pos, char *in, int len)
60 {
61 // Length of /cygdrive/c/ is 12
62 if (pos+12 > len) return 0;
63 if (in[pos+11]=='/' &&
64 in[pos+9]=='/' &&
65 in[pos+8]=='e' &&
66 in[pos+7]=='v' &&
67 in[pos+6]=='i' &&
68 in[pos+5]=='r' &&
69 in[pos+4]=='d' &&
70 in[pos+3]=='g' &&
71 in[pos+2]=='y' &&
72 in[pos+1]=='c' &&
73 in[pos+0]=='/') {
74 return 1;
75 }
76 return 0;
77 }
78
79 /*
80 * Replace /cygdrive/_/ with _:/
81 * Works in place since drive letter is always
82 * shorter than /cygdrive/
83 */
84 char *replace_cygdrive_cygwin(char *in)
85 {
86 int len = strlen(in);
87 char *out = malloc(len+1);
88 int i,j;
89
90 if (len < 12) {
91 strcpy(out, in);
92 return out;
93 }
94 for (i = 0, j = 0; i<len;) {
95 if (is_cygdrive_here(i, in, len)) {
96 out[j++] = in[i+10];
97 out[j++] = ':';
98 i+=11;
99 } else {
100 out[j] = in[i];
101 i++;
102 j++;
103 }
104 }
105 out[j] = 0;
106 return out;
107 }
108
109 void append(char **b, size_t *bl, size_t *u, char *add, size_t addlen)
110 {
111 while ( (addlen+*u+1) > *bl) {
112 *bl *= 2;
113 *b = realloc(*b, *bl);
114 }
115 memcpy(*b+*u, add, addlen);
116 *u += addlen;
117 }
118
119 /*
120 * Creates a new string from in where the first occurance of sub is
121 * replaced by rep.
122 */
123 char *replace_substring(char *in, char *sub, char *rep)
124 {
125 int in_len = strlen(in);
126 int sub_len = strlen(sub);
127 int rep_len = strlen(rep);
128 char *out = malloc(in_len - sub_len + rep_len + 1);
129 char *p;
130
131 if (!(p = strstr(in, sub))) {
132 // If sub isn't a substring of in, just return in.
133 return in;
134 }
135
136 // Copy characters from beginning of in to start of sub.
137 strncpy(out, in, p - in);
138 out[p - in] = '\0';
139
140 sprintf(out + (p - in), "%s%s", rep, p + sub_len);
141
142 return out;
143 }
144
145 char* msys_path_list; // @-separated list of paths prefix to look for
146 char* msys_path_list_end; // Points to last \0 in msys_path_list.
147
148 void setup_msys_path_list(char* argument)
149 {
150 char* p;
151 char* drive_letter_pos;
152
153 msys_path_list = strdup(&argument[2]);
154 msys_path_list_end = &msys_path_list[strlen(msys_path_list)];
155
156 // Convert all at-sign (@) in path list to \0.
157 // @ was chosen as separator to minimize risk of other tools messing around with it
158 p = msys_path_list;
159 do {
160 if (p[1] == ':') {
161 // msys has mangled our path list, restore it from c:/... to /c/...
162 drive_letter_pos = p+1;
163 *drive_letter_pos = *p;
164 *p = '/';
165 }
166
167 // Look for an @ in the list
168 p = strchr(p, '@');
169 if (p != NULL) {
170 *p = '\0';
171 p++;
172 }
173 } while (p != NULL);
174 }
175
176 char *replace_cygdrive_msys(char *in)
177 {
178 char* str;
179 char* prefix;
180 char* p;
181
182 str = strdup(in);
183
184 // For each prefix in the path list, search for it and replace /c/... with c:/...
185 for (prefix = msys_path_list; prefix < msys_path_list_end && prefix != NULL; prefix += strlen(prefix)+1) {
186 p=str;
187 while ((p = strstr(p, prefix))) {
188 char* drive_letter = p+1;
189 *p = *drive_letter;
190 *drive_letter = ':';
191 p++;
192 }
193 }
194
195 return str;
196 }
197
198 char*(*replace_cygdrive)(char *in) = NULL;
199
200 char *files_to_delete[1024];
201 int num_files_to_delete = 0;
202
203 char *fix_at_file(char *in)
204 {
205 char *tmpdir;
206 char name[2048];
207 char *atname;
208 char *buffer;
209 size_t buflen=65536;
210 size_t used=0;
211 size_t len;
212 int rc;
213 FILE *atout;
214 FILE *atin;
215 char block[2048];
216 size_t blocklen;
217 char *fixed;
218
219 atin = fopen(in+1, "r");
220 if (atin == NULL) {
221 fprintf(stderr, "Could not read at file %s\n", in+1);
222 exit(-1);
223 }
224
225 tmpdir = getenv("TMP");
226 if (tmpdir == NULL) {
227 tmpdir = "c:/cygwin/tmp";
228 }
229 _snprintf(name, sizeof(name), "%s\\atfile_XXXXXX", tmpdir);
230
231 rc = _mktemp_s(name, strlen(name)+1);
232 if (rc) {
233 fprintf(stderr, "Could not create temporary file name for at file!\n");
234 exit(-1);
235 }
236
237 atout = fopen(name, "w");
238 if (atout == NULL) {
239 fprintf(stderr, "Could not open temporary file for writing! %s\n", name);
240 exit(-1);
241 }
242
243 buffer = malloc(buflen);
244 while((blocklen = fread(block,1,sizeof(block),atin)) > 0) {
245 append(&buffer, &buflen, &used, block, blocklen);
246 }
247 buffer[used] = 0;
248 if (getenv("DEBUG_FIXPATH") != NULL) {
249 fprintf(stderr, "fixpath input from @-file %s: %s\n", &in[1], buffer);
250 }
251 fixed = replace_cygdrive(buffer);
252 if (getenv("DEBUG_FIXPATH") != NULL) {
253 fprintf(stderr, "fixpath converted to @-file %s is: %s\n", name, fixed);
254 }
255 fwrite(fixed, strlen(fixed), 1, atout);
256 fclose(atin);
257 fclose(atout);
258 free(fixed);
259 free(buffer);
260 files_to_delete[num_files_to_delete] = malloc(strlen(name)+1);
261 strcpy(files_to_delete[num_files_to_delete], name);
262 num_files_to_delete++;
263 atname = malloc(strlen(name)+2);
264 atname[0] = '@';
265 strcpy(atname+1, name);
266 return atname;
267 }
268
269 int main(int argc, char **argv)
270 {
271 STARTUPINFO si;
272 PROCESS_INFORMATION pi;
273 unsigned short rc;
274
275 char *new_at_file;
276 char *old_at_file;
277 char *line;
278 int i;
279 DWORD exitCode;
280
281 if (argc<3 || argv[1][0] != '-' || (argv[1][1] != 'c' && argv[1][1] != 'm')) {
282 fprintf(stderr, "Usage: fixpath -c|m<path@path@...> /cygdrive/c/WINDOWS/notepad.exe /cygdrive/c/x/test.txt\n");
283 exit(0);
284 }
285
286 if (getenv("DEBUG_FIXPATH") != NULL) {
287 fprintf(stderr, "fixpath input line >%s<\n", strstr(GetCommandLine(), argv[1]));
288 }
289
290 if (argv[1][1] == 'c' && argv[1][2] == '\0') {
291 if (getenv("DEBUG_FIXPATH") != NULL) {
292 fprintf(stderr, "using cygwin mode\n");
293 }
294 replace_cygdrive = replace_cygdrive_cygwin;
295 } else if (argv[1][1] == 'm') {
296 if (getenv("DEBUG_FIXPATH") != NULL) {
297 fprintf(stderr, "using msys mode, with path list: %s\n", &argv[1][2]);
298 }
299 setup_msys_path_list(argv[1]);
300 replace_cygdrive = replace_cygdrive_msys;
301 } else {
302 fprintf(stderr, "Unknown mode: %s\n", argv[1]);
303 exit(-1);
304 }
305 line = replace_cygdrive(strstr(GetCommandLine(), argv[2]));
306
307 for (i=1; i<argc; ++i) {
308 if (argv[i][0] == '@') {
309 // Found at-file! Fix it!
310 old_at_file = replace_cygdrive(argv[i]);
311 new_at_file = fix_at_file(old_at_file);
312 line = replace_substring(line, old_at_file, new_at_file);
313 }
314 }
315
316 if (getenv("DEBUG_FIXPATH") != NULL) {
317 fprintf(stderr, "fixpath converted line >%s<\n", line);
318 }
319
320 ZeroMemory(&si,sizeof(si));
321 si.cb=sizeof(si);
322 ZeroMemory(&pi,sizeof(pi));
323
324 rc = CreateProcess(NULL,
325 line,
326 0,
327 0,
328 TRUE,
329 0,
330 0,
331 0,
332 &si,
333 &pi);
334 if(!rc) {
335 // Could not start process for some reason. Try to report why:
336 report_error();
337 exit(rc);
338 }
339
340 WaitForSingleObject(pi.hProcess,INFINITE);
341 GetExitCodeProcess(pi.hProcess,&exitCode);
342
343 if (getenv("DEBUG_FIXPATH") != NULL) {
344 for (i=0; i<num_files_to_delete; ++i) {
345 fprintf(stderr, "Not deleting temporary fixpath file %s\n",
346 files_to_delete[i]);
347 }
348 }
349 else {
350 for (i=0; i<num_files_to_delete; ++i) {
351 remove(files_to_delete[i]);
352 }
353 }
354
355 exit(exitCode);
356 }