876eefd4 |
1 | /* |
2 | * uxsftp.c: the Unix-specific parts of PSFTP and PSCP. |
3 | */ |
4 | |
5 | #include <sys/time.h> |
6 | #include <sys/types.h> |
7 | #include <sys/stat.h> |
18609086 |
8 | #include <stdlib.h> |
876eefd4 |
9 | #include <fcntl.h> |
10 | #include <dirent.h> |
11 | #include <unistd.h> |
12 | #include <utime.h> |
13 | #include <errno.h> |
14 | #include <assert.h> |
9c77ddf6 |
15 | #include <glob.h> |
876eefd4 |
16 | |
17 | #include "putty.h" |
18 | #include "psftp.h" |
19 | |
20 | /* |
21 | * In PSFTP our selects are synchronous, so these functions are |
22 | * empty stubs. |
23 | */ |
24 | int uxsel_input_add(int fd, int rwx) { return 0; } |
25 | void uxsel_input_remove(int id) { } |
26 | |
27 | char *x_get_default(const char *key) |
28 | { |
29 | return NULL; /* this is a stub */ |
30 | } |
31 | |
32 | void platform_get_x11_auth(char *display, int *protocol, |
33 | unsigned char *data, int *datalen) |
34 | { |
35 | /* Do nothing, therefore no auth. */ |
36 | } |
37 | |
38 | /* |
39 | * Default settings that are specific to PSFTP. |
40 | */ |
41 | char *platform_default_s(const char *name) |
42 | { |
43 | return NULL; |
44 | } |
45 | |
46 | int platform_default_i(const char *name, int def) |
47 | { |
48 | return def; |
49 | } |
50 | |
51 | FontSpec platform_default_fontspec(const char *name) |
52 | { |
53 | FontSpec ret; |
54 | *ret.name = '\0'; |
55 | return ret; |
56 | } |
57 | |
58 | Filename platform_default_filename(const char *name) |
59 | { |
60 | Filename ret; |
61 | if (!strcmp(name, "LogFileName")) |
62 | strcpy(ret.path, "putty.log"); |
63 | else |
64 | *ret.path = '\0'; |
65 | return ret; |
66 | } |
67 | |
68 | /* |
69 | * Stubs for the GUI feedback mechanism in Windows PSCP. |
70 | */ |
71 | void gui_update_stats(char *name, unsigned long size, |
72 | int percentage, unsigned long elapsed, |
73 | unsigned long done, unsigned long eta, |
74 | unsigned long ratebs) {} |
75 | void gui_send_errcount(int list, int errs) {} |
76 | void gui_send_char(int is_stderr, int c) {} |
77 | void gui_enable(char *arg) {} |
78 | |
79 | |
80 | /* |
81 | * Set local current directory. Returns NULL on success, or else an |
82 | * error message which must be freed after printing. |
83 | */ |
84 | char *psftp_lcd(char *dir) |
85 | { |
86 | if (chdir(dir) < 0) |
87 | return dupprintf("%s: chdir: %s", dir, strerror(errno)); |
88 | else |
89 | return NULL; |
90 | } |
91 | |
92 | /* |
93 | * Get local current directory. Returns a string which must be |
94 | * freed. |
95 | */ |
96 | char *psftp_getcwd(void) |
97 | { |
98 | char *buffer, *ret; |
99 | int size = 256; |
100 | |
101 | buffer = snewn(size, char); |
102 | while (1) { |
103 | ret = getcwd(buffer, size); |
104 | if (ret != NULL) |
105 | return ret; |
106 | if (errno != ERANGE) { |
107 | sfree(buffer); |
108 | return dupprintf("[cwd unavailable: %s]", strerror(errno)); |
109 | } |
110 | /* |
111 | * Otherwise, ERANGE was returned, meaning the buffer |
112 | * wasn't big enough. |
113 | */ |
114 | size = size * 3 / 2; |
115 | buffer = sresize(buffer, size, char); |
116 | } |
117 | } |
118 | |
119 | struct RFile { |
120 | int fd; |
121 | }; |
122 | |
123 | RFile *open_existing_file(char *name, unsigned long *size, |
124 | unsigned long *mtime, unsigned long *atime) |
125 | { |
126 | int fd; |
127 | RFile *ret; |
128 | |
129 | fd = open(name, O_RDONLY); |
130 | if (fd < 0) |
131 | return NULL; |
132 | |
133 | ret = snew(RFile); |
134 | ret->fd = fd; |
135 | |
136 | if (size || mtime || atime) { |
137 | struct stat statbuf; |
138 | if (fstat(fd, &statbuf) < 0) { |
139 | fprintf(stderr, "%s: stat: %s\n", name, strerror(errno)); |
140 | memset(&statbuf, 0, sizeof(statbuf)); |
141 | } |
142 | |
143 | if (size) |
144 | *size = statbuf.st_size; |
145 | |
146 | if (mtime) |
147 | *mtime = statbuf.st_mtime; |
148 | |
149 | if (atime) |
150 | *atime = statbuf.st_atime; |
151 | } |
152 | |
153 | return ret; |
154 | } |
155 | |
156 | int read_from_file(RFile *f, void *buffer, int length) |
157 | { |
158 | return read(f->fd, buffer, length); |
159 | } |
160 | |
161 | void close_rfile(RFile *f) |
162 | { |
163 | close(f->fd); |
164 | sfree(f); |
165 | } |
166 | |
167 | struct WFile { |
168 | int fd; |
169 | char *name; |
170 | }; |
171 | |
172 | WFile *open_new_file(char *name) |
173 | { |
174 | int fd; |
175 | WFile *ret; |
176 | |
177 | fd = open(name, O_CREAT | O_TRUNC | O_WRONLY, 0666); |
178 | if (fd < 0) |
179 | return NULL; |
180 | |
181 | ret = snew(WFile); |
182 | ret->fd = fd; |
183 | ret->name = dupstr(name); |
184 | |
185 | return ret; |
186 | } |
187 | |
188 | int write_to_file(WFile *f, void *buffer, int length) |
189 | { |
190 | char *p = (char *)buffer; |
191 | int so_far = 0; |
192 | |
193 | /* Keep trying until we've really written as much as we can. */ |
194 | while (length > 0) { |
195 | int ret = write(f->fd, p, length); |
196 | |
197 | if (ret < 0) |
198 | return ret; |
199 | |
200 | if (ret == 0) |
201 | break; |
202 | |
203 | p += ret; |
204 | length -= ret; |
205 | so_far += ret; |
206 | } |
207 | |
208 | return so_far; |
209 | } |
210 | |
211 | void set_file_times(WFile *f, unsigned long mtime, unsigned long atime) |
212 | { |
213 | struct utimbuf ut; |
214 | |
215 | ut.actime = atime; |
216 | ut.modtime = mtime; |
217 | |
218 | utime(f->name, &ut); |
219 | } |
220 | |
221 | /* Closes and frees the WFile */ |
222 | void close_wfile(WFile *f) |
223 | { |
224 | close(f->fd); |
225 | sfree(f->name); |
226 | sfree(f); |
227 | } |
228 | |
229 | int file_type(char *name) |
230 | { |
231 | struct stat statbuf; |
232 | |
233 | if (stat(name, &statbuf) < 0) { |
234 | if (errno != ENOENT) |
235 | fprintf(stderr, "%s: stat: %s\n", name, strerror(errno)); |
236 | return FILE_TYPE_NONEXISTENT; |
237 | } |
238 | |
239 | if (S_ISREG(statbuf.st_mode)) |
240 | return FILE_TYPE_FILE; |
241 | |
242 | if (S_ISDIR(statbuf.st_mode)) |
243 | return FILE_TYPE_DIRECTORY; |
244 | |
245 | return FILE_TYPE_WEIRD; |
246 | } |
247 | |
248 | struct DirHandle { |
249 | DIR *dir; |
250 | }; |
251 | |
252 | DirHandle *open_directory(char *name) |
253 | { |
254 | DIR *dir; |
255 | DirHandle *ret; |
256 | |
257 | dir = opendir(name); |
258 | if (!dir) |
259 | return NULL; |
260 | |
261 | ret = snew(DirHandle); |
262 | ret->dir = dir; |
263 | return ret; |
264 | } |
265 | |
266 | char *read_filename(DirHandle *dir) |
267 | { |
268 | struct dirent *de; |
269 | |
270 | do { |
271 | de = readdir(dir->dir); |
272 | if (de == NULL) |
273 | return NULL; |
274 | } while ((de->d_name[0] == '.' && |
275 | (de->d_name[1] == '\0' || |
276 | (de->d_name[1] == '.' && de->d_name[2] == '\0')))); |
277 | |
278 | return dupstr(de->d_name); |
279 | } |
280 | |
281 | void close_directory(DirHandle *dir) |
282 | { |
283 | closedir(dir->dir); |
284 | sfree(dir); |
285 | } |
286 | |
287 | int test_wildcard(char *name, int cmdline) |
288 | { |
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289 | struct stat statbuf; |
290 | |
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291 | if (stat(name, &statbuf) == 0) { |
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292 | return WCTYPE_FILENAME; |
9c77ddf6 |
293 | } else if (cmdline) { |
294 | /* |
295 | * On Unix, we never need to parse wildcards coming from |
296 | * the command line, because the shell will have expanded |
297 | * them into a filename list already. |
298 | */ |
299 | return WCTYPE_NONEXISTENT; |
300 | } else { |
301 | glob_t globbed; |
302 | int ret = WCTYPE_NONEXISTENT; |
303 | |
304 | if (glob(name, GLOB_ERR, NULL, &globbed) == 0) { |
305 | if (globbed.gl_pathc > 0) |
306 | ret = WCTYPE_WILDCARD; |
307 | globfree(&globbed); |
308 | } |
309 | |
310 | return ret; |
311 | } |
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312 | } |
313 | |
314 | /* |
9c77ddf6 |
315 | * Actually return matching file names for a local wildcard. |
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316 | */ |
317 | struct WildcardMatcher { |
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318 | glob_t globbed; |
319 | int i; |
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320 | }; |
9c77ddf6 |
321 | WildcardMatcher *begin_wildcard_matching(char *name) { |
322 | WildcardMatcher *ret = snew(WildcardMatcher); |
323 | |
324 | if (glob(name, 0, NULL, &ret->globbed) < 0) { |
325 | sfree(ret); |
326 | return NULL; |
327 | } |
328 | |
329 | ret->i = 0; |
330 | |
331 | return ret; |
332 | } |
333 | char *wildcard_get_filename(WildcardMatcher *dir) { |
334 | if (dir->i < dir->globbed.gl_pathc) { |
335 | return dupstr(dir->globbed.gl_pathv[dir->i++]); |
336 | } else |
337 | return NULL; |
338 | } |
339 | void finish_wildcard_matching(WildcardMatcher *dir) { |
340 | globfree(&dir->globbed); |
341 | sfree(dir); |
342 | } |
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343 | |
e9d14678 |
344 | int vet_filename(char *name) |
345 | { |
346 | if (strchr(name, '/')) |
347 | return FALSE; |
348 | |
349 | if (name[0] == '.' && (!name[1] || (name[1] == '.' && !name[2]))) |
350 | return FALSE; |
351 | |
352 | return TRUE; |
353 | } |
354 | |
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355 | int create_directory(char *name) |
356 | { |
357 | return mkdir(name, 0777) == 0; |
358 | } |
359 | |
360 | char *dir_file_cat(char *dir, char *file) |
361 | { |
362 | return dupcat(dir, "/", file, NULL); |
363 | } |
364 | |
365 | /* |
39934deb |
366 | * Do a select() between all currently active network fds and |
367 | * optionally stdin. |
876eefd4 |
368 | */ |
65857773 |
369 | static int ssh_sftp_do_select(int include_stdin, int no_fds_ok) |
876eefd4 |
370 | { |
371 | fd_set rset, wset, xset; |
372 | int i, fdcount, fdsize, *fdlist; |
373 | int fd, fdstate, rwx, ret, maxfd; |
39934deb |
374 | long now = GETTICKCOUNT(); |
876eefd4 |
375 | |
376 | fdlist = NULL; |
377 | fdcount = fdsize = 0; |
378 | |
39934deb |
379 | do { |
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380 | |
39934deb |
381 | /* Count the currently active fds. */ |
382 | i = 0; |
383 | for (fd = first_fd(&fdstate, &rwx); fd >= 0; |
384 | fd = next_fd(&fdstate, &rwx)) i++; |
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385 | |
65857773 |
386 | if (i < 1 && !no_fds_ok) |
39934deb |
387 | return -1; /* doom */ |
876eefd4 |
388 | |
39934deb |
389 | /* Expand the fdlist buffer if necessary. */ |
390 | if (i > fdsize) { |
391 | fdsize = i + 16; |
392 | fdlist = sresize(fdlist, fdsize, int); |
393 | } |
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394 | |
39934deb |
395 | FD_ZERO(&rset); |
396 | FD_ZERO(&wset); |
397 | FD_ZERO(&xset); |
398 | maxfd = 0; |
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399 | |
39934deb |
400 | /* |
401 | * Add all currently open fds to the select sets, and store |
402 | * them in fdlist as well. |
403 | */ |
404 | fdcount = 0; |
405 | for (fd = first_fd(&fdstate, &rwx); fd >= 0; |
406 | fd = next_fd(&fdstate, &rwx)) { |
407 | fdlist[fdcount++] = fd; |
408 | if (rwx & 1) |
409 | FD_SET_MAX(fd, maxfd, rset); |
410 | if (rwx & 2) |
411 | FD_SET_MAX(fd, maxfd, wset); |
412 | if (rwx & 4) |
413 | FD_SET_MAX(fd, maxfd, xset); |
414 | } |
415 | |
416 | if (include_stdin) |
417 | FD_SET_MAX(0, maxfd, rset); |
418 | |
419 | do { |
420 | long next, ticks; |
421 | struct timeval tv, *ptv; |
422 | |
423 | if (run_timers(now, &next)) { |
424 | ticks = next - GETTICKCOUNT(); |
425 | if (ticks <= 0) |
426 | ticks = 1; /* just in case */ |
427 | tv.tv_sec = ticks / 1000; |
428 | tv.tv_usec = ticks % 1000 * 1000; |
429 | ptv = &tv; |
430 | } else { |
431 | ptv = NULL; |
432 | } |
433 | ret = select(maxfd, &rset, &wset, &xset, ptv); |
434 | if (ret == 0) |
435 | now = next; |
436 | else |
437 | now = GETTICKCOUNT(); |
438 | } while (ret < 0 && errno != EINTR); |
439 | } while (ret == 0); |
876eefd4 |
440 | |
441 | if (ret < 0) { |
442 | perror("select"); |
443 | exit(1); |
444 | } |
445 | |
446 | for (i = 0; i < fdcount; i++) { |
447 | fd = fdlist[i]; |
448 | /* |
449 | * We must process exceptional notifications before |
450 | * ordinary readability ones, or we may go straight |
451 | * past the urgent marker. |
452 | */ |
453 | if (FD_ISSET(fd, &xset)) |
454 | select_result(fd, 4); |
455 | if (FD_ISSET(fd, &rset)) |
456 | select_result(fd, 1); |
457 | if (FD_ISSET(fd, &wset)) |
458 | select_result(fd, 2); |
459 | } |
460 | |
461 | sfree(fdlist); |
462 | |
39934deb |
463 | return FD_ISSET(0, &rset) ? 1 : 0; |
464 | } |
465 | |
466 | /* |
467 | * Wait for some network data and process it. |
468 | */ |
469 | int ssh_sftp_loop_iteration(void) |
470 | { |
65857773 |
471 | return ssh_sftp_do_select(FALSE, FALSE); |
39934deb |
472 | } |
473 | |
474 | /* |
475 | * Read a PSFTP command line from stdin. |
476 | */ |
65857773 |
477 | char *ssh_sftp_get_cmdline(char *prompt, int no_fds_ok) |
39934deb |
478 | { |
479 | char *buf; |
480 | int buflen, bufsize, ret; |
481 | |
482 | fputs(prompt, stdout); |
483 | fflush(stdout); |
484 | |
485 | buf = NULL; |
486 | buflen = bufsize = 0; |
487 | |
488 | while (1) { |
65857773 |
489 | ret = ssh_sftp_do_select(TRUE, no_fds_ok); |
39934deb |
490 | if (ret < 0) { |
491 | printf("connection died\n"); |
492 | return NULL; /* woop woop */ |
493 | } |
494 | if (ret > 0) { |
495 | if (buflen >= bufsize) { |
496 | bufsize = buflen + 512; |
497 | buf = sresize(buf, bufsize, char); |
498 | } |
499 | ret = read(0, buf+buflen, 1); |
500 | if (ret < 0) { |
501 | perror("read"); |
502 | return NULL; |
503 | } |
504 | if (ret == 0) { |
505 | /* eof on stdin; no error, but no answer either */ |
506 | return NULL; |
507 | } |
508 | |
509 | if (buf[buflen++] == '\n') { |
510 | /* we have a full line */ |
511 | return buf; |
512 | } |
513 | } |
514 | } |
876eefd4 |
515 | } |
516 | |
517 | /* |
518 | * Main program: do platform-specific initialisation and then call |
519 | * psftp_main(). |
520 | */ |
521 | int main(int argc, char *argv[]) |
522 | { |
523 | uxsel_init(); |
524 | return psftp_main(argc, argv); |
525 | } |