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> |
8 | #include <fcntl.h> |
9 | #include <dirent.h> |
10 | #include <unistd.h> |
11 | #include <utime.h> |
12 | #include <errno.h> |
13 | #include <assert.h> |
14 | |
15 | #include "putty.h" |
16 | #include "psftp.h" |
17 | |
18 | /* |
19 | * In PSFTP our selects are synchronous, so these functions are |
20 | * empty stubs. |
21 | */ |
22 | int uxsel_input_add(int fd, int rwx) { return 0; } |
23 | void uxsel_input_remove(int id) { } |
24 | |
25 | char *x_get_default(const char *key) |
26 | { |
27 | return NULL; /* this is a stub */ |
28 | } |
29 | |
30 | void platform_get_x11_auth(char *display, int *protocol, |
31 | unsigned char *data, int *datalen) |
32 | { |
33 | /* Do nothing, therefore no auth. */ |
34 | } |
35 | |
36 | /* |
37 | * Default settings that are specific to PSFTP. |
38 | */ |
39 | char *platform_default_s(const char *name) |
40 | { |
41 | return NULL; |
42 | } |
43 | |
44 | int platform_default_i(const char *name, int def) |
45 | { |
46 | return def; |
47 | } |
48 | |
49 | FontSpec platform_default_fontspec(const char *name) |
50 | { |
51 | FontSpec ret; |
52 | *ret.name = '\0'; |
53 | return ret; |
54 | } |
55 | |
56 | Filename platform_default_filename(const char *name) |
57 | { |
58 | Filename ret; |
59 | if (!strcmp(name, "LogFileName")) |
60 | strcpy(ret.path, "putty.log"); |
61 | else |
62 | *ret.path = '\0'; |
63 | return ret; |
64 | } |
65 | |
66 | /* |
67 | * Stubs for the GUI feedback mechanism in Windows PSCP. |
68 | */ |
69 | void gui_update_stats(char *name, unsigned long size, |
70 | int percentage, unsigned long elapsed, |
71 | unsigned long done, unsigned long eta, |
72 | unsigned long ratebs) {} |
73 | void gui_send_errcount(int list, int errs) {} |
74 | void gui_send_char(int is_stderr, int c) {} |
75 | void gui_enable(char *arg) {} |
76 | |
77 | |
78 | /* |
79 | * Set local current directory. Returns NULL on success, or else an |
80 | * error message which must be freed after printing. |
81 | */ |
82 | char *psftp_lcd(char *dir) |
83 | { |
84 | if (chdir(dir) < 0) |
85 | return dupprintf("%s: chdir: %s", dir, strerror(errno)); |
86 | else |
87 | return NULL; |
88 | } |
89 | |
90 | /* |
91 | * Get local current directory. Returns a string which must be |
92 | * freed. |
93 | */ |
94 | char *psftp_getcwd(void) |
95 | { |
96 | char *buffer, *ret; |
97 | int size = 256; |
98 | |
99 | buffer = snewn(size, char); |
100 | while (1) { |
101 | ret = getcwd(buffer, size); |
102 | if (ret != NULL) |
103 | return ret; |
104 | if (errno != ERANGE) { |
105 | sfree(buffer); |
106 | return dupprintf("[cwd unavailable: %s]", strerror(errno)); |
107 | } |
108 | /* |
109 | * Otherwise, ERANGE was returned, meaning the buffer |
110 | * wasn't big enough. |
111 | */ |
112 | size = size * 3 / 2; |
113 | buffer = sresize(buffer, size, char); |
114 | } |
115 | } |
116 | |
117 | struct RFile { |
118 | int fd; |
119 | }; |
120 | |
121 | RFile *open_existing_file(char *name, unsigned long *size, |
122 | unsigned long *mtime, unsigned long *atime) |
123 | { |
124 | int fd; |
125 | RFile *ret; |
126 | |
127 | fd = open(name, O_RDONLY); |
128 | if (fd < 0) |
129 | return NULL; |
130 | |
131 | ret = snew(RFile); |
132 | ret->fd = fd; |
133 | |
134 | if (size || mtime || atime) { |
135 | struct stat statbuf; |
136 | if (fstat(fd, &statbuf) < 0) { |
137 | fprintf(stderr, "%s: stat: %s\n", name, strerror(errno)); |
138 | memset(&statbuf, 0, sizeof(statbuf)); |
139 | } |
140 | |
141 | if (size) |
142 | *size = statbuf.st_size; |
143 | |
144 | if (mtime) |
145 | *mtime = statbuf.st_mtime; |
146 | |
147 | if (atime) |
148 | *atime = statbuf.st_atime; |
149 | } |
150 | |
151 | return ret; |
152 | } |
153 | |
154 | int read_from_file(RFile *f, void *buffer, int length) |
155 | { |
156 | return read(f->fd, buffer, length); |
157 | } |
158 | |
159 | void close_rfile(RFile *f) |
160 | { |
161 | close(f->fd); |
162 | sfree(f); |
163 | } |
164 | |
165 | struct WFile { |
166 | int fd; |
167 | char *name; |
168 | }; |
169 | |
170 | WFile *open_new_file(char *name) |
171 | { |
172 | int fd; |
173 | WFile *ret; |
174 | |
175 | fd = open(name, O_CREAT | O_TRUNC | O_WRONLY, 0666); |
176 | if (fd < 0) |
177 | return NULL; |
178 | |
179 | ret = snew(WFile); |
180 | ret->fd = fd; |
181 | ret->name = dupstr(name); |
182 | |
183 | return ret; |
184 | } |
185 | |
186 | int write_to_file(WFile *f, void *buffer, int length) |
187 | { |
188 | char *p = (char *)buffer; |
189 | int so_far = 0; |
190 | |
191 | /* Keep trying until we've really written as much as we can. */ |
192 | while (length > 0) { |
193 | int ret = write(f->fd, p, length); |
194 | |
195 | if (ret < 0) |
196 | return ret; |
197 | |
198 | if (ret == 0) |
199 | break; |
200 | |
201 | p += ret; |
202 | length -= ret; |
203 | so_far += ret; |
204 | } |
205 | |
206 | return so_far; |
207 | } |
208 | |
209 | void set_file_times(WFile *f, unsigned long mtime, unsigned long atime) |
210 | { |
211 | struct utimbuf ut; |
212 | |
213 | ut.actime = atime; |
214 | ut.modtime = mtime; |
215 | |
216 | utime(f->name, &ut); |
217 | } |
218 | |
219 | /* Closes and frees the WFile */ |
220 | void close_wfile(WFile *f) |
221 | { |
222 | close(f->fd); |
223 | sfree(f->name); |
224 | sfree(f); |
225 | } |
226 | |
227 | int file_type(char *name) |
228 | { |
229 | struct stat statbuf; |
230 | |
231 | if (stat(name, &statbuf) < 0) { |
232 | if (errno != ENOENT) |
233 | fprintf(stderr, "%s: stat: %s\n", name, strerror(errno)); |
234 | return FILE_TYPE_NONEXISTENT; |
235 | } |
236 | |
237 | if (S_ISREG(statbuf.st_mode)) |
238 | return FILE_TYPE_FILE; |
239 | |
240 | if (S_ISDIR(statbuf.st_mode)) |
241 | return FILE_TYPE_DIRECTORY; |
242 | |
243 | return FILE_TYPE_WEIRD; |
244 | } |
245 | |
246 | struct DirHandle { |
247 | DIR *dir; |
248 | }; |
249 | |
250 | DirHandle *open_directory(char *name) |
251 | { |
252 | DIR *dir; |
253 | DirHandle *ret; |
254 | |
255 | dir = opendir(name); |
256 | if (!dir) |
257 | return NULL; |
258 | |
259 | ret = snew(DirHandle); |
260 | ret->dir = dir; |
261 | return ret; |
262 | } |
263 | |
264 | char *read_filename(DirHandle *dir) |
265 | { |
266 | struct dirent *de; |
267 | |
268 | do { |
269 | de = readdir(dir->dir); |
270 | if (de == NULL) |
271 | return NULL; |
272 | } while ((de->d_name[0] == '.' && |
273 | (de->d_name[1] == '\0' || |
274 | (de->d_name[1] == '.' && de->d_name[2] == '\0')))); |
275 | |
276 | return dupstr(de->d_name); |
277 | } |
278 | |
279 | void close_directory(DirHandle *dir) |
280 | { |
281 | closedir(dir->dir); |
282 | sfree(dir); |
283 | } |
284 | |
285 | int test_wildcard(char *name, int cmdline) |
286 | { |
287 | /* |
288 | * On Unix, we currently don't support local wildcards at all. |
289 | * We will have to do so (FIXME) once PSFTP starts implementing |
290 | * mput, but until then we can assume `cmdline' is always set. |
291 | */ |
292 | struct stat statbuf; |
293 | |
294 | assert(cmdline); |
295 | if (stat(name, &statbuf) < 0) |
296 | return WCTYPE_NONEXISTENT; |
297 | else |
298 | return WCTYPE_FILENAME; |
299 | } |
300 | |
301 | /* |
302 | * Actually return matching file names for a local wildcard. FIXME: |
303 | * we currently don't support this at all. |
304 | */ |
305 | struct WildcardMatcher { |
306 | int x; |
307 | }; |
308 | WildcardMatcher *begin_wildcard_matching(char *name) { return NULL; } |
309 | char *wildcard_get_filename(WildcardMatcher *dir) { return NULL; } |
310 | void finish_wildcard_matching(WildcardMatcher *dir) {} |
311 | |
312 | int create_directory(char *name) |
313 | { |
314 | return mkdir(name, 0777) == 0; |
315 | } |
316 | |
317 | char *dir_file_cat(char *dir, char *file) |
318 | { |
319 | return dupcat(dir, "/", file, NULL); |
320 | } |
321 | |
322 | /* |
323 | * Wait for some network data and process it. |
324 | */ |
325 | int ssh_sftp_loop_iteration(void) |
326 | { |
327 | fd_set rset, wset, xset; |
328 | int i, fdcount, fdsize, *fdlist; |
329 | int fd, fdstate, rwx, ret, maxfd; |
330 | |
331 | fdlist = NULL; |
332 | fdcount = fdsize = 0; |
333 | |
334 | /* Count the currently active fds. */ |
335 | i = 0; |
336 | for (fd = first_fd(&fdstate, &rwx); fd >= 0; |
337 | fd = next_fd(&fdstate, &rwx)) i++; |
338 | |
339 | if (i < 1) |
340 | return -1; /* doom */ |
341 | |
342 | /* Expand the fdlist buffer if necessary. */ |
343 | if (i > fdsize) { |
344 | fdsize = i + 16; |
345 | fdlist = sresize(fdlist, fdsize, int); |
346 | } |
347 | |
348 | FD_ZERO(&rset); |
349 | FD_ZERO(&wset); |
350 | FD_ZERO(&xset); |
351 | maxfd = 0; |
352 | |
353 | /* |
354 | * Add all currently open fds to the select sets, and store |
355 | * them in fdlist as well. |
356 | */ |
357 | fdcount = 0; |
358 | for (fd = first_fd(&fdstate, &rwx); fd >= 0; |
359 | fd = next_fd(&fdstate, &rwx)) { |
360 | fdlist[fdcount++] = fd; |
361 | if (rwx & 1) |
362 | FD_SET_MAX(fd, maxfd, rset); |
363 | if (rwx & 2) |
364 | FD_SET_MAX(fd, maxfd, wset); |
365 | if (rwx & 4) |
366 | FD_SET_MAX(fd, maxfd, xset); |
367 | } |
368 | |
369 | do { |
370 | ret = select(maxfd, &rset, &wset, &xset, NULL); |
371 | } while (ret < 0 && errno == EINTR); |
372 | |
373 | if (ret < 0) { |
374 | perror("select"); |
375 | exit(1); |
376 | } |
377 | |
378 | for (i = 0; i < fdcount; i++) { |
379 | fd = fdlist[i]; |
380 | /* |
381 | * We must process exceptional notifications before |
382 | * ordinary readability ones, or we may go straight |
383 | * past the urgent marker. |
384 | */ |
385 | if (FD_ISSET(fd, &xset)) |
386 | select_result(fd, 4); |
387 | if (FD_ISSET(fd, &rset)) |
388 | select_result(fd, 1); |
389 | if (FD_ISSET(fd, &wset)) |
390 | select_result(fd, 2); |
391 | } |
392 | |
393 | sfree(fdlist); |
394 | |
395 | return 0; |
396 | } |
397 | |
398 | /* |
399 | * Main program: do platform-specific initialisation and then call |
400 | * psftp_main(). |
401 | */ |
402 | int main(int argc, char *argv[]) |
403 | { |
404 | uxsel_init(); |
405 | return psftp_main(argc, argv); |
406 | } |