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> |
15 | |
16 | #include "putty.h" |
17 | #include "psftp.h" |
18 | |
19 | /* |
20 | * In PSFTP our selects are synchronous, so these functions are |
21 | * empty stubs. |
22 | */ |
23 | int uxsel_input_add(int fd, int rwx) { return 0; } |
24 | void uxsel_input_remove(int id) { } |
25 | |
26 | char *x_get_default(const char *key) |
27 | { |
28 | return NULL; /* this is a stub */ |
29 | } |
30 | |
31 | void platform_get_x11_auth(char *display, int *protocol, |
32 | unsigned char *data, int *datalen) |
33 | { |
34 | /* Do nothing, therefore no auth. */ |
35 | } |
36 | |
37 | /* |
38 | * Default settings that are specific to PSFTP. |
39 | */ |
40 | char *platform_default_s(const char *name) |
41 | { |
42 | return NULL; |
43 | } |
44 | |
45 | int platform_default_i(const char *name, int def) |
46 | { |
47 | return def; |
48 | } |
49 | |
50 | FontSpec platform_default_fontspec(const char *name) |
51 | { |
52 | FontSpec ret; |
53 | *ret.name = '\0'; |
54 | return ret; |
55 | } |
56 | |
57 | Filename platform_default_filename(const char *name) |
58 | { |
59 | Filename ret; |
60 | if (!strcmp(name, "LogFileName")) |
61 | strcpy(ret.path, "putty.log"); |
62 | else |
63 | *ret.path = '\0'; |
64 | return ret; |
65 | } |
66 | |
67 | /* |
68 | * Stubs for the GUI feedback mechanism in Windows PSCP. |
69 | */ |
70 | void gui_update_stats(char *name, unsigned long size, |
71 | int percentage, unsigned long elapsed, |
72 | unsigned long done, unsigned long eta, |
73 | unsigned long ratebs) {} |
74 | void gui_send_errcount(int list, int errs) {} |
75 | void gui_send_char(int is_stderr, int c) {} |
76 | void gui_enable(char *arg) {} |
77 | |
78 | |
79 | /* |
80 | * Set local current directory. Returns NULL on success, or else an |
81 | * error message which must be freed after printing. |
82 | */ |
83 | char *psftp_lcd(char *dir) |
84 | { |
85 | if (chdir(dir) < 0) |
86 | return dupprintf("%s: chdir: %s", dir, strerror(errno)); |
87 | else |
88 | return NULL; |
89 | } |
90 | |
91 | /* |
92 | * Get local current directory. Returns a string which must be |
93 | * freed. |
94 | */ |
95 | char *psftp_getcwd(void) |
96 | { |
97 | char *buffer, *ret; |
98 | int size = 256; |
99 | |
100 | buffer = snewn(size, char); |
101 | while (1) { |
102 | ret = getcwd(buffer, size); |
103 | if (ret != NULL) |
104 | return ret; |
105 | if (errno != ERANGE) { |
106 | sfree(buffer); |
107 | return dupprintf("[cwd unavailable: %s]", strerror(errno)); |
108 | } |
109 | /* |
110 | * Otherwise, ERANGE was returned, meaning the buffer |
111 | * wasn't big enough. |
112 | */ |
113 | size = size * 3 / 2; |
114 | buffer = sresize(buffer, size, char); |
115 | } |
116 | } |
117 | |
118 | struct RFile { |
119 | int fd; |
120 | }; |
121 | |
122 | RFile *open_existing_file(char *name, unsigned long *size, |
123 | unsigned long *mtime, unsigned long *atime) |
124 | { |
125 | int fd; |
126 | RFile *ret; |
127 | |
128 | fd = open(name, O_RDONLY); |
129 | if (fd < 0) |
130 | return NULL; |
131 | |
132 | ret = snew(RFile); |
133 | ret->fd = fd; |
134 | |
135 | if (size || mtime || atime) { |
136 | struct stat statbuf; |
137 | if (fstat(fd, &statbuf) < 0) { |
138 | fprintf(stderr, "%s: stat: %s\n", name, strerror(errno)); |
139 | memset(&statbuf, 0, sizeof(statbuf)); |
140 | } |
141 | |
142 | if (size) |
143 | *size = statbuf.st_size; |
144 | |
145 | if (mtime) |
146 | *mtime = statbuf.st_mtime; |
147 | |
148 | if (atime) |
149 | *atime = statbuf.st_atime; |
150 | } |
151 | |
152 | return ret; |
153 | } |
154 | |
155 | int read_from_file(RFile *f, void *buffer, int length) |
156 | { |
157 | return read(f->fd, buffer, length); |
158 | } |
159 | |
160 | void close_rfile(RFile *f) |
161 | { |
162 | close(f->fd); |
163 | sfree(f); |
164 | } |
165 | |
166 | struct WFile { |
167 | int fd; |
168 | char *name; |
169 | }; |
170 | |
171 | WFile *open_new_file(char *name) |
172 | { |
173 | int fd; |
174 | WFile *ret; |
175 | |
176 | fd = open(name, O_CREAT | O_TRUNC | O_WRONLY, 0666); |
177 | if (fd < 0) |
178 | return NULL; |
179 | |
180 | ret = snew(WFile); |
181 | ret->fd = fd; |
182 | ret->name = dupstr(name); |
183 | |
184 | return ret; |
185 | } |
186 | |
187 | int write_to_file(WFile *f, void *buffer, int length) |
188 | { |
189 | char *p = (char *)buffer; |
190 | int so_far = 0; |
191 | |
192 | /* Keep trying until we've really written as much as we can. */ |
193 | while (length > 0) { |
194 | int ret = write(f->fd, p, length); |
195 | |
196 | if (ret < 0) |
197 | return ret; |
198 | |
199 | if (ret == 0) |
200 | break; |
201 | |
202 | p += ret; |
203 | length -= ret; |
204 | so_far += ret; |
205 | } |
206 | |
207 | return so_far; |
208 | } |
209 | |
210 | void set_file_times(WFile *f, unsigned long mtime, unsigned long atime) |
211 | { |
212 | struct utimbuf ut; |
213 | |
214 | ut.actime = atime; |
215 | ut.modtime = mtime; |
216 | |
217 | utime(f->name, &ut); |
218 | } |
219 | |
220 | /* Closes and frees the WFile */ |
221 | void close_wfile(WFile *f) |
222 | { |
223 | close(f->fd); |
224 | sfree(f->name); |
225 | sfree(f); |
226 | } |
227 | |
228 | int file_type(char *name) |
229 | { |
230 | struct stat statbuf; |
231 | |
232 | if (stat(name, &statbuf) < 0) { |
233 | if (errno != ENOENT) |
234 | fprintf(stderr, "%s: stat: %s\n", name, strerror(errno)); |
235 | return FILE_TYPE_NONEXISTENT; |
236 | } |
237 | |
238 | if (S_ISREG(statbuf.st_mode)) |
239 | return FILE_TYPE_FILE; |
240 | |
241 | if (S_ISDIR(statbuf.st_mode)) |
242 | return FILE_TYPE_DIRECTORY; |
243 | |
244 | return FILE_TYPE_WEIRD; |
245 | } |
246 | |
247 | struct DirHandle { |
248 | DIR *dir; |
249 | }; |
250 | |
251 | DirHandle *open_directory(char *name) |
252 | { |
253 | DIR *dir; |
254 | DirHandle *ret; |
255 | |
256 | dir = opendir(name); |
257 | if (!dir) |
258 | return NULL; |
259 | |
260 | ret = snew(DirHandle); |
261 | ret->dir = dir; |
262 | return ret; |
263 | } |
264 | |
265 | char *read_filename(DirHandle *dir) |
266 | { |
267 | struct dirent *de; |
268 | |
269 | do { |
270 | de = readdir(dir->dir); |
271 | if (de == NULL) |
272 | return NULL; |
273 | } while ((de->d_name[0] == '.' && |
274 | (de->d_name[1] == '\0' || |
275 | (de->d_name[1] == '.' && de->d_name[2] == '\0')))); |
276 | |
277 | return dupstr(de->d_name); |
278 | } |
279 | |
280 | void close_directory(DirHandle *dir) |
281 | { |
282 | closedir(dir->dir); |
283 | sfree(dir); |
284 | } |
285 | |
286 | int test_wildcard(char *name, int cmdline) |
287 | { |
288 | /* |
289 | * On Unix, we currently don't support local wildcards at all. |
290 | * We will have to do so (FIXME) once PSFTP starts implementing |
291 | * mput, but until then we can assume `cmdline' is always set. |
292 | */ |
293 | struct stat statbuf; |
294 | |
295 | assert(cmdline); |
296 | if (stat(name, &statbuf) < 0) |
297 | return WCTYPE_NONEXISTENT; |
298 | else |
299 | return WCTYPE_FILENAME; |
300 | } |
301 | |
302 | /* |
303 | * Actually return matching file names for a local wildcard. FIXME: |
304 | * we currently don't support this at all. |
305 | */ |
306 | struct WildcardMatcher { |
307 | int x; |
308 | }; |
309 | WildcardMatcher *begin_wildcard_matching(char *name) { return NULL; } |
310 | char *wildcard_get_filename(WildcardMatcher *dir) { return NULL; } |
311 | void finish_wildcard_matching(WildcardMatcher *dir) {} |
312 | |
313 | int create_directory(char *name) |
314 | { |
315 | return mkdir(name, 0777) == 0; |
316 | } |
317 | |
318 | char *dir_file_cat(char *dir, char *file) |
319 | { |
320 | return dupcat(dir, "/", file, NULL); |
321 | } |
322 | |
323 | /* |
324 | * Wait for some network data and process it. |
325 | */ |
326 | int ssh_sftp_loop_iteration(void) |
327 | { |
328 | fd_set rset, wset, xset; |
329 | int i, fdcount, fdsize, *fdlist; |
330 | int fd, fdstate, rwx, ret, maxfd; |
331 | |
332 | fdlist = NULL; |
333 | fdcount = fdsize = 0; |
334 | |
335 | /* Count the currently active fds. */ |
336 | i = 0; |
337 | for (fd = first_fd(&fdstate, &rwx); fd >= 0; |
338 | fd = next_fd(&fdstate, &rwx)) i++; |
339 | |
340 | if (i < 1) |
341 | return -1; /* doom */ |
342 | |
343 | /* Expand the fdlist buffer if necessary. */ |
344 | if (i > fdsize) { |
345 | fdsize = i + 16; |
346 | fdlist = sresize(fdlist, fdsize, int); |
347 | } |
348 | |
349 | FD_ZERO(&rset); |
350 | FD_ZERO(&wset); |
351 | FD_ZERO(&xset); |
352 | maxfd = 0; |
353 | |
354 | /* |
355 | * Add all currently open fds to the select sets, and store |
356 | * them in fdlist as well. |
357 | */ |
358 | fdcount = 0; |
359 | for (fd = first_fd(&fdstate, &rwx); fd >= 0; |
360 | fd = next_fd(&fdstate, &rwx)) { |
361 | fdlist[fdcount++] = fd; |
362 | if (rwx & 1) |
363 | FD_SET_MAX(fd, maxfd, rset); |
364 | if (rwx & 2) |
365 | FD_SET_MAX(fd, maxfd, wset); |
366 | if (rwx & 4) |
367 | FD_SET_MAX(fd, maxfd, xset); |
368 | } |
369 | |
370 | do { |
371 | ret = select(maxfd, &rset, &wset, &xset, NULL); |
372 | } while (ret < 0 && errno == EINTR); |
373 | |
374 | if (ret < 0) { |
375 | perror("select"); |
376 | exit(1); |
377 | } |
378 | |
379 | for (i = 0; i < fdcount; i++) { |
380 | fd = fdlist[i]; |
381 | /* |
382 | * We must process exceptional notifications before |
383 | * ordinary readability ones, or we may go straight |
384 | * past the urgent marker. |
385 | */ |
386 | if (FD_ISSET(fd, &xset)) |
387 | select_result(fd, 4); |
388 | if (FD_ISSET(fd, &rset)) |
389 | select_result(fd, 1); |
390 | if (FD_ISSET(fd, &wset)) |
391 | select_result(fd, 2); |
392 | } |
393 | |
394 | sfree(fdlist); |
395 | |
396 | return 0; |
397 | } |
398 | |
399 | /* |
400 | * Main program: do platform-specific initialisation and then call |
401 | * psftp_main(). |
402 | */ |
403 | int main(int argc, char *argv[]) |
404 | { |
405 | uxsel_init(); |
406 | return psftp_main(argc, argv); |
407 | } |