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ef416fc2 | 1 | /* |
fa73b229 | 2 | * "$Id: getputfile.c 4984 2006-01-25 21:55:36Z mike $" |
ef416fc2 | 3 | * |
4 | * Get/put file functions for the Common UNIX Printing System (CUPS). | |
5 | * | |
6 | * Copyright 1997-2006 by Easy Software Products. | |
7 | * | |
8 | * These coded instructions, statements, and computer programs are the | |
9 | * property of Easy Software Products and are protected by Federal | |
10 | * copyright law. Distribution and use rights are outlined in the file | |
11 | * "LICENSE.txt" which should have been included with this file. If this | |
12 | * file is missing or damaged please contact Easy Software Products | |
13 | * at: | |
14 | * | |
15 | * Attn: CUPS Licensing Information | |
16 | * Easy Software Products | |
17 | * 44141 Airport View Drive, Suite 204 | |
18 | * Hollywood, Maryland 20636 USA | |
19 | * | |
20 | * Voice: (301) 373-9600 | |
21 | * EMail: cups-info@cups.org | |
22 | * WWW: http://www.cups.org | |
23 | * | |
24 | * This file is subject to the Apple OS-Developed Software exception. | |
25 | * | |
26 | * Contents: | |
27 | * | |
28 | * cupsGetFd() - Get a file from the server. | |
29 | * cupsGetFile() - Get a file from the server. | |
30 | * cupsPutFd() - Put a file on the server. | |
31 | * cupsPutFile() - Put a file on the server. | |
32 | */ | |
33 | ||
34 | /* | |
35 | * Include necessary headers... | |
36 | */ | |
37 | ||
38 | #include "cups.h" | |
39 | #include "ipp.h" | |
40 | #include "language.h" | |
41 | #include "string.h" | |
42 | #include "debug.h" | |
43 | #include <stdlib.h> | |
44 | #include <ctype.h> | |
45 | #include <errno.h> | |
46 | #include <fcntl.h> | |
47 | #include <sys/stat.h> | |
48 | #if defined(WIN32) || defined(__EMX__) | |
49 | # include <io.h> | |
50 | #else | |
51 | # include <unistd.h> | |
52 | #endif /* WIN32 || __EMX__ */ | |
53 | ||
54 | ||
55 | /* | |
56 | * 'cupsGetFd()' - Get a file from the server. | |
57 | * | |
58 | * This function returns HTTP_OK when the file is successfully retrieved. | |
59 | * | |
60 | * @since CUPS 1.1.20@ | |
61 | */ | |
62 | ||
63 | http_status_t /* O - Status */ | |
64 | cupsGetFd(http_t *http, /* I - HTTP connection to server */ | |
65 | const char *resource, /* I - Resource name */ | |
66 | int fd) /* I - File descriptor */ | |
67 | { | |
68 | int bytes; /* Number of bytes read */ | |
69 | char buffer[8192]; /* Buffer for file */ | |
70 | http_status_t status; /* HTTP status from server */ | |
71 | ||
72 | ||
73 | /* | |
74 | * Range check input... | |
75 | */ | |
76 | ||
77 | DEBUG_printf(("cupsGetFd(http=%p, resource=\"%s\", fd=%d)\n", http, | |
78 | resource, fd)); | |
79 | ||
80 | if (!http || !resource || fd < 0) | |
81 | { | |
82 | if (http) | |
83 | http->error = EINVAL; | |
84 | ||
85 | return (HTTP_ERROR); | |
86 | } | |
87 | ||
88 | /* | |
89 | * Then send GET requests to the HTTP server... | |
90 | */ | |
91 | ||
92 | do | |
93 | { | |
94 | httpClearFields(http); | |
95 | httpSetField(http, HTTP_FIELD_AUTHORIZATION, http->authstring); | |
96 | ||
97 | if (httpGet(http, resource)) | |
98 | { | |
99 | if (httpReconnect(http)) | |
100 | { | |
101 | status = HTTP_ERROR; | |
102 | break; | |
103 | } | |
104 | else | |
105 | { | |
106 | status = HTTP_UNAUTHORIZED; | |
107 | continue; | |
108 | } | |
109 | } | |
110 | ||
111 | while ((status = httpUpdate(http)) == HTTP_CONTINUE); | |
112 | ||
113 | if (status == HTTP_UNAUTHORIZED) | |
114 | { | |
115 | /* | |
116 | * Flush any error message... | |
117 | */ | |
118 | ||
119 | httpFlush(http); | |
120 | ||
121 | /* | |
122 | * See if we can do authentication... | |
123 | */ | |
124 | ||
125 | if (cupsDoAuthentication(http, "GET", resource)) | |
126 | break; | |
127 | ||
fa73b229 | 128 | if (httpReconnect(http)) |
129 | { | |
130 | status = HTTP_ERROR; | |
131 | break; | |
132 | } | |
ef416fc2 | 133 | |
134 | continue; | |
135 | } | |
136 | #ifdef HAVE_SSL | |
137 | else if (status == HTTP_UPGRADE_REQUIRED) | |
138 | { | |
139 | /* Flush any error message... */ | |
140 | httpFlush(http); | |
141 | ||
142 | /* Reconnect... */ | |
fa73b229 | 143 | if (httpReconnect(http)) |
144 | { | |
145 | status = HTTP_ERROR; | |
146 | break; | |
147 | } | |
ef416fc2 | 148 | |
149 | /* Upgrade with encryption... */ | |
150 | httpEncryption(http, HTTP_ENCRYPT_REQUIRED); | |
151 | ||
152 | /* Try again, this time with encryption enabled... */ | |
153 | continue; | |
154 | } | |
155 | #endif /* HAVE_SSL */ | |
156 | } | |
157 | while (status == HTTP_UNAUTHORIZED || status == HTTP_UPGRADE_REQUIRED); | |
158 | ||
159 | /* | |
160 | * See if we actually got the file or an error... | |
161 | */ | |
162 | ||
163 | if (status == HTTP_OK) | |
164 | { | |
165 | /* | |
166 | * Yes, copy the file... | |
167 | */ | |
168 | ||
169 | while ((bytes = httpRead(http, buffer, sizeof(buffer))) > 0) | |
170 | write(fd, buffer, bytes); | |
171 | } | |
172 | else | |
173 | httpFlush(http); | |
174 | ||
175 | /* | |
176 | * Return the request status... | |
177 | */ | |
178 | ||
179 | return (status); | |
180 | } | |
181 | ||
182 | ||
183 | /* | |
184 | * 'cupsGetFile()' - Get a file from the server. | |
185 | * | |
186 | * This function returns HTTP_OK when the file is successfully retrieved. | |
187 | * | |
188 | * @since CUPS 1.1.20@ | |
189 | */ | |
190 | ||
191 | http_status_t /* O - Status */ | |
192 | cupsGetFile(http_t *http, /* I - HTTP connection to server */ | |
193 | const char *resource, /* I - Resource name */ | |
194 | const char *filename) /* I - Filename */ | |
195 | { | |
196 | int fd; /* File descriptor */ | |
197 | http_status_t status; /* Status */ | |
198 | ||
199 | ||
200 | /* | |
201 | * Range check input... | |
202 | */ | |
203 | ||
204 | if (!http || !resource || !filename) | |
205 | { | |
206 | if (http) | |
207 | http->error = EINVAL; | |
208 | ||
209 | return (HTTP_ERROR); | |
210 | } | |
211 | ||
212 | /* | |
213 | * Create the file... | |
214 | */ | |
215 | ||
216 | if ((fd = open(filename, O_WRONLY | O_EXCL | O_TRUNC)) < 0) | |
217 | { | |
218 | /* | |
219 | * Couldn't open the file! | |
220 | */ | |
221 | ||
222 | http->error = errno; | |
223 | ||
224 | return (HTTP_ERROR); | |
225 | } | |
226 | ||
227 | /* | |
228 | * Get the file... | |
229 | */ | |
230 | ||
231 | status = cupsGetFd(http, resource, fd); | |
232 | ||
233 | /* | |
234 | * If the file couldn't be gotten, then remove the file... | |
235 | */ | |
236 | ||
237 | close(fd); | |
238 | ||
239 | if (status != HTTP_OK) | |
240 | unlink(filename); | |
241 | ||
242 | /* | |
243 | * Return the HTTP status code... | |
244 | */ | |
245 | ||
246 | return (status); | |
247 | } | |
248 | ||
249 | ||
250 | /* | |
251 | * 'cupsPutFd()' - Put a file on the server. | |
252 | * | |
253 | * This function returns HTTP_CREATED when the file is stored successfully. | |
254 | * | |
255 | * @since CUPS 1.1.20@ | |
256 | */ | |
257 | ||
258 | http_status_t /* O - Status */ | |
259 | cupsPutFd(http_t *http, /* I - HTTP connection to server */ | |
260 | const char *resource, /* I - Resource name */ | |
261 | int fd) /* I - File descriptor */ | |
262 | { | |
263 | int bytes; /* Number of bytes read */ | |
264 | char buffer[8192]; /* Buffer for file */ | |
265 | http_status_t status; /* HTTP status from server */ | |
266 | ||
267 | ||
268 | /* | |
269 | * Range check input... | |
270 | */ | |
271 | ||
272 | DEBUG_printf(("cupsPutFd(http=%p, resource=\"%s\", fd=%d)\n", http, | |
273 | resource, fd)); | |
274 | ||
275 | if (!http || !resource || fd < 0) | |
276 | { | |
277 | if (http) | |
278 | http->error = EINVAL; | |
279 | ||
280 | return (HTTP_ERROR); | |
281 | } | |
282 | ||
283 | /* | |
284 | * Then send PUT requests to the HTTP server... | |
285 | */ | |
286 | ||
287 | do | |
288 | { | |
289 | DEBUG_printf(("cupsPutFd: starting attempt, authstring=\"%s\"...\n", | |
290 | http->authstring)); | |
291 | ||
292 | httpClearFields(http); | |
293 | httpSetField(http, HTTP_FIELD_AUTHORIZATION, http->authstring); | |
294 | httpSetField(http, HTTP_FIELD_TRANSFER_ENCODING, "chunked"); | |
295 | ||
296 | if (httpPut(http, resource)) | |
297 | { | |
298 | if (httpReconnect(http)) | |
299 | { | |
300 | status = HTTP_ERROR; | |
301 | break; | |
302 | } | |
303 | else | |
304 | { | |
305 | status = HTTP_UNAUTHORIZED; | |
306 | continue; | |
307 | } | |
308 | } | |
309 | ||
310 | /* | |
311 | * Copy the file... | |
312 | */ | |
313 | ||
314 | lseek(fd, 0, SEEK_SET); | |
315 | ||
316 | status = HTTP_CONTINUE; | |
317 | ||
318 | while ((bytes = read(fd, buffer, sizeof(buffer))) > 0) | |
319 | if (httpCheck(http)) | |
320 | { | |
321 | if ((status = httpUpdate(http)) != HTTP_CONTINUE) | |
322 | break; | |
323 | } | |
324 | else | |
325 | httpWrite(http, buffer, bytes); | |
326 | ||
327 | if (status == HTTP_CONTINUE) | |
328 | { | |
329 | httpWrite(http, buffer, 0); | |
330 | ||
331 | while ((status = httpUpdate(http)) == HTTP_CONTINUE); | |
332 | } | |
333 | ||
334 | DEBUG_printf(("cupsPutFd: status=%d\n", status)); | |
335 | ||
336 | if (status == HTTP_UNAUTHORIZED) | |
337 | { | |
338 | /* | |
339 | * Flush any error message... | |
340 | */ | |
341 | ||
342 | httpFlush(http); | |
343 | ||
344 | /* | |
345 | * See if we can do authentication... | |
346 | */ | |
347 | ||
348 | if (cupsDoAuthentication(http, "PUT", resource)) | |
349 | break; | |
350 | ||
fa73b229 | 351 | if (httpReconnect(http)) |
352 | { | |
353 | status = HTTP_ERROR; | |
354 | break; | |
355 | } | |
ef416fc2 | 356 | |
357 | continue; | |
358 | } | |
359 | #ifdef HAVE_SSL | |
360 | else if (status == HTTP_UPGRADE_REQUIRED) | |
361 | { | |
362 | /* Flush any error message... */ | |
363 | httpFlush(http); | |
364 | ||
365 | /* Reconnect... */ | |
fa73b229 | 366 | if (httpReconnect(http)) |
367 | { | |
368 | status = HTTP_ERROR; | |
369 | break; | |
370 | } | |
ef416fc2 | 371 | |
372 | /* Upgrade with encryption... */ | |
373 | httpEncryption(http, HTTP_ENCRYPT_REQUIRED); | |
374 | ||
375 | /* Try again, this time with encryption enabled... */ | |
376 | continue; | |
377 | } | |
378 | #endif /* HAVE_SSL */ | |
379 | } | |
380 | while (status == HTTP_UNAUTHORIZED || status == HTTP_UPGRADE_REQUIRED); | |
381 | ||
382 | /* | |
383 | * See if we actually put the file or an error... | |
384 | */ | |
385 | ||
386 | if (status != HTTP_CREATED) | |
387 | httpFlush(http); | |
388 | ||
389 | return (status); | |
390 | } | |
391 | ||
392 | ||
393 | /* | |
394 | * 'cupsPutFile()' - Put a file on the server. | |
395 | * | |
396 | * This function returns HTTP_CREATED when the file is stored successfully. | |
397 | * | |
398 | * @since CUPS 1.1.20@ | |
399 | */ | |
400 | ||
401 | http_status_t /* O - Status */ | |
402 | cupsPutFile(http_t *http, /* I - HTTP connection to server */ | |
403 | const char *resource, /* I - Resource name */ | |
404 | const char *filename) /* I - Filename */ | |
405 | { | |
406 | int fd; /* File descriptor */ | |
407 | http_status_t status; /* Status */ | |
408 | ||
409 | ||
410 | /* | |
411 | * Range check input... | |
412 | */ | |
413 | ||
414 | if (!http || !resource || !filename) | |
415 | { | |
416 | if (http) | |
417 | http->error = EINVAL; | |
418 | ||
419 | return (HTTP_ERROR); | |
420 | } | |
421 | ||
422 | /* | |
423 | * Open the local file... | |
424 | */ | |
425 | ||
426 | if ((fd = open(filename, O_RDONLY)) < 0) | |
427 | { | |
428 | /* | |
429 | * Couldn't open the file! | |
430 | */ | |
431 | ||
432 | http->error = errno; | |
433 | ||
434 | return (HTTP_ERROR); | |
435 | } | |
436 | ||
437 | /* | |
438 | * Put the file... | |
439 | */ | |
440 | ||
441 | status = cupsPutFd(http, resource, fd); | |
442 | ||
443 | close(fd); | |
444 | ||
445 | return (status); | |
446 | } | |
447 | ||
448 | ||
449 | /* | |
fa73b229 | 450 | * End of "$Id: getputfile.c 4984 2006-01-25 21:55:36Z mike $". |
ef416fc2 | 451 | */ |