1 | /* |
---|
2 | * nanoftp.c: basic FTP client support |
---|
3 | * |
---|
4 | * Reference: RFC 959 |
---|
5 | */ |
---|
6 | |
---|
7 | #ifdef TESTING |
---|
8 | #define STANDALONE |
---|
9 | #define HAVE_STDLIB_H |
---|
10 | #define HAVE_UNISTD_H |
---|
11 | #define HAVE_SYS_SOCKET_H |
---|
12 | #define HAVE_NETINET_IN_H |
---|
13 | #define HAVE_NETDB_H |
---|
14 | #define HAVE_SYS_TIME_H |
---|
15 | #else /* TESTING */ |
---|
16 | #define NEED_SOCKETS |
---|
17 | #endif /* TESTING */ |
---|
18 | |
---|
19 | #define IN_LIBXML |
---|
20 | #include "libxml.h" |
---|
21 | |
---|
22 | #ifdef LIBXML_FTP_ENABLED |
---|
23 | #include <string.h> |
---|
24 | |
---|
25 | #ifdef HAVE_STDLIB_H |
---|
26 | #include <stdlib.h> |
---|
27 | #endif |
---|
28 | #ifdef HAVE_UNISTD_H |
---|
29 | #include <unistd.h> |
---|
30 | #endif |
---|
31 | #ifdef HAVE_SYS_SOCKET_H |
---|
32 | #include <sys/socket.h> |
---|
33 | #endif |
---|
34 | #ifdef HAVE_NETINET_IN_H |
---|
35 | #include <netinet/in.h> |
---|
36 | #endif |
---|
37 | #ifdef HAVE_ARPA_INET_H |
---|
38 | #include <arpa/inet.h> |
---|
39 | #endif |
---|
40 | #ifdef HAVE_NETDB_H |
---|
41 | #include <netdb.h> |
---|
42 | #endif |
---|
43 | #ifdef HAVE_FCNTL_H |
---|
44 | #include <fcntl.h> |
---|
45 | #endif |
---|
46 | #ifdef HAVE_ERRNO_H |
---|
47 | #include <errno.h> |
---|
48 | #endif |
---|
49 | #ifdef HAVE_SYS_TIME_H |
---|
50 | #include <sys/time.h> |
---|
51 | #endif |
---|
52 | #ifdef HAVE_SYS_SELECT_H |
---|
53 | #include <sys/select.h> |
---|
54 | #endif |
---|
55 | #ifdef HAVE_STRINGS_H |
---|
56 | #include <strings.h> |
---|
57 | #endif |
---|
58 | |
---|
59 | #include <libxml/xmlmemory.h> |
---|
60 | #include <libxml/parser.h> |
---|
61 | #include <libxml/xmlerror.h> |
---|
62 | #include <libxml/uri.h> |
---|
63 | #include <libxml/nanoftp.h> |
---|
64 | #include <libxml/globals.h> |
---|
65 | |
---|
66 | /* #define DEBUG_FTP 1 */ |
---|
67 | #ifdef STANDALONE |
---|
68 | #ifndef DEBUG_FTP |
---|
69 | #define DEBUG_FTP 1 |
---|
70 | #endif |
---|
71 | #endif |
---|
72 | |
---|
73 | /** |
---|
74 | * A couple portability macros |
---|
75 | */ |
---|
76 | #ifndef _WINSOCKAPI_ |
---|
77 | #define closesocket(s) close(s) |
---|
78 | #define SOCKET int |
---|
79 | #endif |
---|
80 | #if defined(VMS) || defined(__VMS) |
---|
81 | #define SOCKLEN_T unsigned int |
---|
82 | #endif |
---|
83 | |
---|
84 | #define FTP_COMMAND_OK 200 |
---|
85 | #define FTP_SYNTAX_ERROR 500 |
---|
86 | #define FTP_GET_PASSWD 331 |
---|
87 | #define FTP_BUF_SIZE 512 |
---|
88 | |
---|
89 | typedef struct xmlNanoFTPCtxt { |
---|
90 | char *protocol; /* the protocol name */ |
---|
91 | char *hostname; /* the host name */ |
---|
92 | int port; /* the port */ |
---|
93 | char *path; /* the path within the URL */ |
---|
94 | char *user; /* user string */ |
---|
95 | char *passwd; /* passwd string */ |
---|
96 | struct sockaddr_in ftpAddr; /* the socket address struct */ |
---|
97 | int passive; /* currently we support only passive !!! */ |
---|
98 | SOCKET controlFd; /* the file descriptor for the control socket */ |
---|
99 | SOCKET dataFd; /* the file descriptor for the data socket */ |
---|
100 | int state; /* WRITE / READ / CLOSED */ |
---|
101 | int returnValue; /* the protocol return value */ |
---|
102 | /* buffer for data received from the control connection */ |
---|
103 | char controlBuf[FTP_BUF_SIZE + 1]; |
---|
104 | int controlBufIndex; |
---|
105 | int controlBufUsed; |
---|
106 | int controlBufAnswer; |
---|
107 | } xmlNanoFTPCtxt, *xmlNanoFTPCtxtPtr; |
---|
108 | |
---|
109 | static int initialized = 0; |
---|
110 | static char *proxy = NULL; /* the proxy name if any */ |
---|
111 | static int proxyPort = 0; /* the proxy port if any */ |
---|
112 | static char *proxyUser = NULL; /* user for proxy authentication */ |
---|
113 | static char *proxyPasswd = NULL;/* passwd for proxy authentication */ |
---|
114 | static int proxyType = 0; /* uses TYPE or a@b ? */ |
---|
115 | |
---|
116 | /** |
---|
117 | * xmlNanoFTPInit: |
---|
118 | * |
---|
119 | * Initialize the FTP protocol layer. |
---|
120 | * Currently it just checks for proxy informations, |
---|
121 | * and get the hostname |
---|
122 | */ |
---|
123 | |
---|
124 | void |
---|
125 | xmlNanoFTPInit(void) { |
---|
126 | const char *env; |
---|
127 | #ifdef _WINSOCKAPI_ |
---|
128 | WSADATA wsaData; |
---|
129 | #endif |
---|
130 | |
---|
131 | if (initialized) |
---|
132 | return; |
---|
133 | |
---|
134 | #ifdef _WINSOCKAPI_ |
---|
135 | if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) |
---|
136 | return; |
---|
137 | #endif |
---|
138 | |
---|
139 | proxyPort = 21; |
---|
140 | env = getenv("no_proxy"); |
---|
141 | if (env != NULL) |
---|
142 | return; |
---|
143 | env = getenv("ftp_proxy"); |
---|
144 | if (env != NULL) { |
---|
145 | xmlNanoFTPScanProxy(env); |
---|
146 | } else { |
---|
147 | env = getenv("FTP_PROXY"); |
---|
148 | if (env != NULL) { |
---|
149 | xmlNanoFTPScanProxy(env); |
---|
150 | } |
---|
151 | } |
---|
152 | env = getenv("ftp_proxy_user"); |
---|
153 | if (env != NULL) { |
---|
154 | proxyUser = xmlMemStrdup(env); |
---|
155 | } |
---|
156 | env = getenv("ftp_proxy_password"); |
---|
157 | if (env != NULL) { |
---|
158 | proxyPasswd = xmlMemStrdup(env); |
---|
159 | } |
---|
160 | initialized = 1; |
---|
161 | } |
---|
162 | |
---|
163 | /** |
---|
164 | * xmlNanoFTPCleanup: |
---|
165 | * |
---|
166 | * Cleanup the FTP protocol layer. This cleanup proxy informations. |
---|
167 | */ |
---|
168 | |
---|
169 | void |
---|
170 | xmlNanoFTPCleanup(void) { |
---|
171 | if (proxy != NULL) { |
---|
172 | xmlFree(proxy); |
---|
173 | proxy = NULL; |
---|
174 | } |
---|
175 | if (proxyUser != NULL) { |
---|
176 | xmlFree(proxyUser); |
---|
177 | proxyUser = NULL; |
---|
178 | } |
---|
179 | if (proxyPasswd != NULL) { |
---|
180 | xmlFree(proxyPasswd); |
---|
181 | proxyPasswd = NULL; |
---|
182 | } |
---|
183 | #ifdef _WINSOCKAPI_ |
---|
184 | if (initialized) |
---|
185 | WSACleanup(); |
---|
186 | #endif |
---|
187 | initialized = 0; |
---|
188 | } |
---|
189 | |
---|
190 | /** |
---|
191 | * xmlNanoFTPProxy: |
---|
192 | * @host: the proxy host name |
---|
193 | * @port: the proxy port |
---|
194 | * @user: the proxy user name |
---|
195 | * @passwd: the proxy password |
---|
196 | * @type: the type of proxy 1 for using SITE, 2 for USER a@b |
---|
197 | * |
---|
198 | * Setup the FTP proxy informations. |
---|
199 | * This can also be done by using ftp_proxy ftp_proxy_user and |
---|
200 | * ftp_proxy_password environment variables. |
---|
201 | */ |
---|
202 | |
---|
203 | void |
---|
204 | xmlNanoFTPProxy(const char *host, int port, const char *user, |
---|
205 | const char *passwd, int type) { |
---|
206 | if (proxy != NULL) |
---|
207 | xmlFree(proxy); |
---|
208 | if (proxyUser != NULL) |
---|
209 | xmlFree(proxyUser); |
---|
210 | if (proxyPasswd != NULL) |
---|
211 | xmlFree(proxyPasswd); |
---|
212 | if (host) |
---|
213 | proxy = xmlMemStrdup(host); |
---|
214 | if (user) |
---|
215 | proxyUser = xmlMemStrdup(user); |
---|
216 | if (passwd) |
---|
217 | proxyPasswd = xmlMemStrdup(passwd); |
---|
218 | proxyPort = port; |
---|
219 | proxyType = type; |
---|
220 | } |
---|
221 | |
---|
222 | /** |
---|
223 | * xmlNanoFTPScanURL: |
---|
224 | * @ctx: an FTP context |
---|
225 | * @URL: The URL used to initialize the context |
---|
226 | * |
---|
227 | * (Re)Initialize an FTP context by parsing the URL and finding |
---|
228 | * the protocol host port and path it indicates. |
---|
229 | */ |
---|
230 | |
---|
231 | static void |
---|
232 | xmlNanoFTPScanURL(void *ctx, const char *URL) { |
---|
233 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
234 | const char *cur = URL; |
---|
235 | char buf[4096]; |
---|
236 | int indx = 0; |
---|
237 | int port = 0; |
---|
238 | |
---|
239 | if (ctxt->protocol != NULL) { |
---|
240 | xmlFree(ctxt->protocol); |
---|
241 | ctxt->protocol = NULL; |
---|
242 | } |
---|
243 | if (ctxt->hostname != NULL) { |
---|
244 | xmlFree(ctxt->hostname); |
---|
245 | ctxt->hostname = NULL; |
---|
246 | } |
---|
247 | if (ctxt->path != NULL) { |
---|
248 | xmlFree(ctxt->path); |
---|
249 | ctxt->path = NULL; |
---|
250 | } |
---|
251 | if (URL == NULL) return; |
---|
252 | buf[indx] = 0; |
---|
253 | while (*cur != 0) { |
---|
254 | if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) { |
---|
255 | buf[indx] = 0; |
---|
256 | ctxt->protocol = xmlMemStrdup(buf); |
---|
257 | indx = 0; |
---|
258 | cur += 3; |
---|
259 | break; |
---|
260 | } |
---|
261 | buf[indx++] = *cur++; |
---|
262 | } |
---|
263 | if (*cur == 0) return; |
---|
264 | |
---|
265 | buf[indx] = 0; |
---|
266 | /* allow user@ and user:pass@ forms */ |
---|
267 | { |
---|
268 | const char *p = strchr(cur, '@'); |
---|
269 | if(p) { |
---|
270 | while(1) { |
---|
271 | if(cur[0] == ':' || cur[0] == '@') break; |
---|
272 | buf[indx++] = *cur++; |
---|
273 | } |
---|
274 | buf[indx] = 0; |
---|
275 | ctxt->user = xmlMemStrdup(buf); |
---|
276 | indx = 0; |
---|
277 | if(cur[0] == ':') { |
---|
278 | cur++; |
---|
279 | while(1) { |
---|
280 | if(cur[0] == '@') break; |
---|
281 | buf[indx++] = *cur++; |
---|
282 | } |
---|
283 | buf[indx] = 0; |
---|
284 | ctxt->passwd = xmlMemStrdup(buf); |
---|
285 | indx = 0; |
---|
286 | } |
---|
287 | cur = p+1; |
---|
288 | } |
---|
289 | } |
---|
290 | |
---|
291 | while (1) { |
---|
292 | if (cur[0] == ':') { |
---|
293 | buf[indx] = 0; |
---|
294 | ctxt->hostname = xmlMemStrdup(buf); |
---|
295 | indx = 0; |
---|
296 | cur += 1; |
---|
297 | while ((*cur >= '0') && (*cur <= '9')) { |
---|
298 | port *= 10; |
---|
299 | port += *cur - '0'; |
---|
300 | cur++; |
---|
301 | } |
---|
302 | if (port != 0) ctxt->port = port; |
---|
303 | while ((cur[0] != '/') && (*cur != 0)) |
---|
304 | cur++; |
---|
305 | break; |
---|
306 | } |
---|
307 | if ((*cur == '/') || (*cur == 0)) { |
---|
308 | buf[indx] = 0; |
---|
309 | ctxt->hostname = xmlMemStrdup(buf); |
---|
310 | indx = 0; |
---|
311 | break; |
---|
312 | } |
---|
313 | buf[indx++] = *cur++; |
---|
314 | } |
---|
315 | if (*cur == 0) |
---|
316 | ctxt->path = xmlMemStrdup("/"); |
---|
317 | else { |
---|
318 | indx = 0; |
---|
319 | buf[indx] = 0; |
---|
320 | while (*cur != 0) |
---|
321 | buf[indx++] = *cur++; |
---|
322 | buf[indx] = 0; |
---|
323 | ctxt->path = xmlMemStrdup(buf); |
---|
324 | } |
---|
325 | } |
---|
326 | |
---|
327 | /** |
---|
328 | * xmlNanoFTPUpdateURL: |
---|
329 | * @ctx: an FTP context |
---|
330 | * @URL: The URL used to update the context |
---|
331 | * |
---|
332 | * Update an FTP context by parsing the URL and finding |
---|
333 | * new path it indicates. If there is an error in the |
---|
334 | * protocol, hostname, port or other information, the |
---|
335 | * error is raised. It indicates a new connection has to |
---|
336 | * be established. |
---|
337 | * |
---|
338 | * Returns 0 if Ok, -1 in case of error (other host). |
---|
339 | */ |
---|
340 | |
---|
341 | int |
---|
342 | xmlNanoFTPUpdateURL(void *ctx, const char *URL) { |
---|
343 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
344 | const char *cur = URL; |
---|
345 | char buf[4096]; |
---|
346 | int indx = 0; |
---|
347 | int port = 0; |
---|
348 | |
---|
349 | if (URL == NULL) |
---|
350 | return(-1); |
---|
351 | if (ctxt == NULL) |
---|
352 | return(-1); |
---|
353 | if (ctxt->protocol == NULL) |
---|
354 | return(-1); |
---|
355 | if (ctxt->hostname == NULL) |
---|
356 | return(-1); |
---|
357 | buf[indx] = 0; |
---|
358 | while (*cur != 0) { |
---|
359 | if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) { |
---|
360 | buf[indx] = 0; |
---|
361 | if (strcmp(ctxt->protocol, buf)) |
---|
362 | return(-1); |
---|
363 | indx = 0; |
---|
364 | cur += 3; |
---|
365 | break; |
---|
366 | } |
---|
367 | buf[indx++] = *cur++; |
---|
368 | } |
---|
369 | if (*cur == 0) |
---|
370 | return(-1); |
---|
371 | |
---|
372 | buf[indx] = 0; |
---|
373 | while (1) { |
---|
374 | if (cur[0] == ':') { |
---|
375 | buf[indx] = 0; |
---|
376 | if (strcmp(ctxt->hostname, buf)) |
---|
377 | return(-1); |
---|
378 | indx = 0; |
---|
379 | cur += 1; |
---|
380 | while ((*cur >= '0') && (*cur <= '9')) { |
---|
381 | port *= 10; |
---|
382 | port += *cur - '0'; |
---|
383 | cur++; |
---|
384 | } |
---|
385 | if (port != ctxt->port) |
---|
386 | return(-1); |
---|
387 | while ((cur[0] != '/') && (*cur != 0)) |
---|
388 | cur++; |
---|
389 | break; |
---|
390 | } |
---|
391 | if ((*cur == '/') || (*cur == 0)) { |
---|
392 | buf[indx] = 0; |
---|
393 | if (strcmp(ctxt->hostname, buf)) |
---|
394 | return(-1); |
---|
395 | indx = 0; |
---|
396 | break; |
---|
397 | } |
---|
398 | buf[indx++] = *cur++; |
---|
399 | } |
---|
400 | if (ctxt->path != NULL) { |
---|
401 | xmlFree(ctxt->path); |
---|
402 | ctxt->path = NULL; |
---|
403 | } |
---|
404 | |
---|
405 | if (*cur == 0) |
---|
406 | ctxt->path = xmlMemStrdup("/"); |
---|
407 | else { |
---|
408 | indx = 0; |
---|
409 | buf[indx] = 0; |
---|
410 | while (*cur != 0) |
---|
411 | buf[indx++] = *cur++; |
---|
412 | buf[indx] = 0; |
---|
413 | ctxt->path = xmlMemStrdup(buf); |
---|
414 | } |
---|
415 | return(0); |
---|
416 | } |
---|
417 | |
---|
418 | /** |
---|
419 | * xmlNanoFTPScanProxy: |
---|
420 | * @URL: The proxy URL used to initialize the proxy context |
---|
421 | * |
---|
422 | * (Re)Initialize the FTP Proxy context by parsing the URL and finding |
---|
423 | * the protocol host port it indicates. |
---|
424 | * Should be like ftp://myproxy/ or ftp://myproxy:3128/ |
---|
425 | * A NULL URL cleans up proxy informations. |
---|
426 | */ |
---|
427 | |
---|
428 | void |
---|
429 | xmlNanoFTPScanProxy(const char *URL) { |
---|
430 | const char *cur = URL; |
---|
431 | char buf[4096]; |
---|
432 | int indx = 0; |
---|
433 | int port = 0; |
---|
434 | |
---|
435 | if (proxy != NULL) { |
---|
436 | xmlFree(proxy); |
---|
437 | proxy = NULL; |
---|
438 | } |
---|
439 | if (proxyPort != 0) { |
---|
440 | proxyPort = 0; |
---|
441 | } |
---|
442 | #ifdef DEBUG_FTP |
---|
443 | if (URL == NULL) |
---|
444 | xmlGenericError(xmlGenericErrorContext, "Removing FTP proxy info\n"); |
---|
445 | else |
---|
446 | xmlGenericError(xmlGenericErrorContext, "Using FTP proxy %s\n", URL); |
---|
447 | #endif |
---|
448 | if (URL == NULL) return; |
---|
449 | buf[indx] = 0; |
---|
450 | while (*cur != 0) { |
---|
451 | if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) { |
---|
452 | buf[indx] = 0; |
---|
453 | indx = 0; |
---|
454 | cur += 3; |
---|
455 | break; |
---|
456 | } |
---|
457 | buf[indx++] = *cur++; |
---|
458 | } |
---|
459 | if (*cur == 0) return; |
---|
460 | |
---|
461 | buf[indx] = 0; |
---|
462 | while (1) { |
---|
463 | if (cur[0] == ':') { |
---|
464 | buf[indx] = 0; |
---|
465 | proxy = xmlMemStrdup(buf); |
---|
466 | indx = 0; |
---|
467 | cur += 1; |
---|
468 | while ((*cur >= '0') && (*cur <= '9')) { |
---|
469 | port *= 10; |
---|
470 | port += *cur - '0'; |
---|
471 | cur++; |
---|
472 | } |
---|
473 | if (port != 0) proxyPort = port; |
---|
474 | while ((cur[0] != '/') && (*cur != 0)) |
---|
475 | cur++; |
---|
476 | break; |
---|
477 | } |
---|
478 | if ((*cur == '/') || (*cur == 0)) { |
---|
479 | buf[indx] = 0; |
---|
480 | proxy = xmlMemStrdup(buf); |
---|
481 | indx = 0; |
---|
482 | break; |
---|
483 | } |
---|
484 | buf[indx++] = *cur++; |
---|
485 | } |
---|
486 | } |
---|
487 | |
---|
488 | /** |
---|
489 | * xmlNanoFTPNewCtxt: |
---|
490 | * @URL: The URL used to initialize the context |
---|
491 | * |
---|
492 | * Allocate and initialize a new FTP context. |
---|
493 | * |
---|
494 | * Returns an FTP context or NULL in case of error. |
---|
495 | */ |
---|
496 | |
---|
497 | void* |
---|
498 | xmlNanoFTPNewCtxt(const char *URL) { |
---|
499 | xmlNanoFTPCtxtPtr ret; |
---|
500 | char *unescaped; |
---|
501 | |
---|
502 | ret = (xmlNanoFTPCtxtPtr) xmlMalloc(sizeof(xmlNanoFTPCtxt)); |
---|
503 | if (ret == NULL) return(NULL); |
---|
504 | |
---|
505 | memset(ret, 0, sizeof(xmlNanoFTPCtxt)); |
---|
506 | ret->port = 21; |
---|
507 | ret->passive = 1; |
---|
508 | ret->returnValue = 0; |
---|
509 | ret->controlBufIndex = 0; |
---|
510 | ret->controlBufUsed = 0; |
---|
511 | ret->controlFd = -1; |
---|
512 | |
---|
513 | unescaped = xmlURIUnescapeString(URL, 0, NULL); |
---|
514 | if (unescaped != NULL) |
---|
515 | xmlNanoFTPScanURL(ret, unescaped); |
---|
516 | else if (URL != NULL) |
---|
517 | xmlNanoFTPScanURL(ret, URL); |
---|
518 | xmlFree(unescaped); |
---|
519 | |
---|
520 | return(ret); |
---|
521 | } |
---|
522 | |
---|
523 | /** |
---|
524 | * xmlNanoFTPFreeCtxt: |
---|
525 | * @ctx: an FTP context |
---|
526 | * |
---|
527 | * Frees the context after closing the connection. |
---|
528 | */ |
---|
529 | |
---|
530 | void |
---|
531 | xmlNanoFTPFreeCtxt(void * ctx) { |
---|
532 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
533 | if (ctxt == NULL) return; |
---|
534 | if (ctxt->hostname != NULL) xmlFree(ctxt->hostname); |
---|
535 | if (ctxt->protocol != NULL) xmlFree(ctxt->protocol); |
---|
536 | if (ctxt->path != NULL) xmlFree(ctxt->path); |
---|
537 | ctxt->passive = 1; |
---|
538 | if (ctxt->controlFd >= 0) closesocket(ctxt->controlFd); |
---|
539 | ctxt->controlFd = -1; |
---|
540 | ctxt->controlBufIndex = -1; |
---|
541 | ctxt->controlBufUsed = -1; |
---|
542 | xmlFree(ctxt); |
---|
543 | } |
---|
544 | |
---|
545 | /** |
---|
546 | * xmlNanoFTPParseResponse: |
---|
547 | * @buf: the buffer containing the response |
---|
548 | * @len: the buffer length |
---|
549 | * |
---|
550 | * Parsing of the server answer, we just extract the code. |
---|
551 | * |
---|
552 | * returns 0 for errors |
---|
553 | * +XXX for last line of response |
---|
554 | * -XXX for response to be continued |
---|
555 | */ |
---|
556 | static int |
---|
557 | xmlNanoFTPParseResponse(char *buf, int len) { |
---|
558 | int val = 0; |
---|
559 | |
---|
560 | if (len < 3) return(-1); |
---|
561 | if ((*buf >= '0') && (*buf <= '9')) |
---|
562 | val = val * 10 + (*buf - '0'); |
---|
563 | else |
---|
564 | return(0); |
---|
565 | buf++; |
---|
566 | if ((*buf >= '0') && (*buf <= '9')) |
---|
567 | val = val * 10 + (*buf - '0'); |
---|
568 | else |
---|
569 | return(0); |
---|
570 | buf++; |
---|
571 | if ((*buf >= '0') && (*buf <= '9')) |
---|
572 | val = val * 10 + (*buf - '0'); |
---|
573 | else |
---|
574 | return(0); |
---|
575 | buf++; |
---|
576 | if (*buf == '-') |
---|
577 | return(-val); |
---|
578 | return(val); |
---|
579 | } |
---|
580 | |
---|
581 | /** |
---|
582 | * xmlNanoFTPGetMore: |
---|
583 | * @ctx: an FTP context |
---|
584 | * |
---|
585 | * Read more information from the FTP control connection |
---|
586 | * Returns the number of bytes read, < 0 indicates an error |
---|
587 | */ |
---|
588 | static int |
---|
589 | xmlNanoFTPGetMore(void *ctx) { |
---|
590 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
591 | int len; |
---|
592 | int size; |
---|
593 | |
---|
594 | if ((ctxt->controlBufIndex < 0) || (ctxt->controlBufIndex > FTP_BUF_SIZE)) { |
---|
595 | #ifdef DEBUG_FTP |
---|
596 | xmlGenericError(xmlGenericErrorContext, |
---|
597 | "xmlNanoFTPGetMore : controlBufIndex = %d\n", |
---|
598 | ctxt->controlBufIndex); |
---|
599 | #endif |
---|
600 | return(-1); |
---|
601 | } |
---|
602 | |
---|
603 | if ((ctxt->controlBufUsed < 0) || (ctxt->controlBufUsed > FTP_BUF_SIZE)) { |
---|
604 | #ifdef DEBUG_FTP |
---|
605 | xmlGenericError(xmlGenericErrorContext, |
---|
606 | "xmlNanoFTPGetMore : controlBufUsed = %d\n", |
---|
607 | ctxt->controlBufUsed); |
---|
608 | #endif |
---|
609 | return(-1); |
---|
610 | } |
---|
611 | if (ctxt->controlBufIndex > ctxt->controlBufUsed) { |
---|
612 | #ifdef DEBUG_FTP |
---|
613 | xmlGenericError(xmlGenericErrorContext, |
---|
614 | "xmlNanoFTPGetMore : controlBufIndex > controlBufUsed %d > %d\n", |
---|
615 | ctxt->controlBufIndex, ctxt->controlBufUsed); |
---|
616 | #endif |
---|
617 | return(-1); |
---|
618 | } |
---|
619 | |
---|
620 | /* |
---|
621 | * First pack the control buffer |
---|
622 | */ |
---|
623 | if (ctxt->controlBufIndex > 0) { |
---|
624 | memmove(&ctxt->controlBuf[0], &ctxt->controlBuf[ctxt->controlBufIndex], |
---|
625 | ctxt->controlBufUsed - ctxt->controlBufIndex); |
---|
626 | ctxt->controlBufUsed -= ctxt->controlBufIndex; |
---|
627 | ctxt->controlBufIndex = 0; |
---|
628 | } |
---|
629 | size = FTP_BUF_SIZE - ctxt->controlBufUsed; |
---|
630 | if (size == 0) { |
---|
631 | #ifdef DEBUG_FTP |
---|
632 | xmlGenericError(xmlGenericErrorContext, |
---|
633 | "xmlNanoFTPGetMore : buffer full %d \n", ctxt->controlBufUsed); |
---|
634 | #endif |
---|
635 | return(0); |
---|
636 | } |
---|
637 | |
---|
638 | /* |
---|
639 | * Read the amount left on the control connection |
---|
640 | */ |
---|
641 | if ((len = recv(ctxt->controlFd, &ctxt->controlBuf[ctxt->controlBufIndex], |
---|
642 | size, 0)) < 0) { |
---|
643 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
644 | ctxt->controlFd = -1; |
---|
645 | return(-1); |
---|
646 | } |
---|
647 | #ifdef DEBUG_FTP |
---|
648 | xmlGenericError(xmlGenericErrorContext, |
---|
649 | "xmlNanoFTPGetMore : read %d [%d - %d]\n", len, |
---|
650 | ctxt->controlBufUsed, ctxt->controlBufUsed + len); |
---|
651 | #endif |
---|
652 | ctxt->controlBufUsed += len; |
---|
653 | ctxt->controlBuf[ctxt->controlBufUsed] = 0; |
---|
654 | |
---|
655 | return(len); |
---|
656 | } |
---|
657 | |
---|
658 | /** |
---|
659 | * xmlNanoFTPReadResponse: |
---|
660 | * @ctx: an FTP context |
---|
661 | * |
---|
662 | * Read the response from the FTP server after a command. |
---|
663 | * Returns the code number |
---|
664 | */ |
---|
665 | static int |
---|
666 | xmlNanoFTPReadResponse(void *ctx) { |
---|
667 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
668 | char *ptr, *end; |
---|
669 | int len; |
---|
670 | int res = -1, cur = -1; |
---|
671 | |
---|
672 | get_more: |
---|
673 | /* |
---|
674 | * Assumes everything up to controlBuf[controlBufIndex] has been read |
---|
675 | * and analyzed. |
---|
676 | */ |
---|
677 | len = xmlNanoFTPGetMore(ctx); |
---|
678 | if (len < 0) { |
---|
679 | return(-1); |
---|
680 | } |
---|
681 | if ((ctxt->controlBufUsed == 0) && (len == 0)) { |
---|
682 | return(-1); |
---|
683 | } |
---|
684 | ptr = &ctxt->controlBuf[ctxt->controlBufIndex]; |
---|
685 | end = &ctxt->controlBuf[ctxt->controlBufUsed]; |
---|
686 | |
---|
687 | #ifdef DEBUG_FTP |
---|
688 | xmlGenericError(xmlGenericErrorContext, |
---|
689 | "\n<<<\n%s\n--\n", ptr); |
---|
690 | #endif |
---|
691 | while (ptr < end) { |
---|
692 | cur = xmlNanoFTPParseResponse(ptr, end - ptr); |
---|
693 | if (cur > 0) { |
---|
694 | /* |
---|
695 | * Successfully scanned the control code, scratch |
---|
696 | * till the end of the line, but keep the index to be |
---|
697 | * able to analyze the result if needed. |
---|
698 | */ |
---|
699 | res = cur; |
---|
700 | ptr += 3; |
---|
701 | ctxt->controlBufAnswer = ptr - ctxt->controlBuf; |
---|
702 | while ((ptr < end) && (*ptr != '\n')) ptr++; |
---|
703 | if (*ptr == '\n') ptr++; |
---|
704 | if (*ptr == '\r') ptr++; |
---|
705 | break; |
---|
706 | } |
---|
707 | while ((ptr < end) && (*ptr != '\n')) ptr++; |
---|
708 | if (ptr >= end) { |
---|
709 | ctxt->controlBufIndex = ctxt->controlBufUsed; |
---|
710 | goto get_more; |
---|
711 | } |
---|
712 | if (*ptr != '\r') ptr++; |
---|
713 | } |
---|
714 | |
---|
715 | if (res < 0) goto get_more; |
---|
716 | ctxt->controlBufIndex = ptr - ctxt->controlBuf; |
---|
717 | #ifdef DEBUG_FTP |
---|
718 | ptr = &ctxt->controlBuf[ctxt->controlBufIndex]; |
---|
719 | xmlGenericError(xmlGenericErrorContext, "\n---\n%s\n--\n", ptr); |
---|
720 | #endif |
---|
721 | |
---|
722 | #ifdef DEBUG_FTP |
---|
723 | xmlGenericError(xmlGenericErrorContext, "Got %d\n", res); |
---|
724 | #endif |
---|
725 | return(res / 100); |
---|
726 | } |
---|
727 | |
---|
728 | /** |
---|
729 | * xmlNanoFTPGetResponse: |
---|
730 | * @ctx: an FTP context |
---|
731 | * |
---|
732 | * Get the response from the FTP server after a command. |
---|
733 | * Returns the code number |
---|
734 | */ |
---|
735 | |
---|
736 | int |
---|
737 | xmlNanoFTPGetResponse(void *ctx) { |
---|
738 | int res; |
---|
739 | |
---|
740 | res = xmlNanoFTPReadResponse(ctx); |
---|
741 | |
---|
742 | return(res); |
---|
743 | } |
---|
744 | |
---|
745 | /** |
---|
746 | * xmlNanoFTPCheckResponse: |
---|
747 | * @ctx: an FTP context |
---|
748 | * |
---|
749 | * Check if there is a response from the FTP server after a command. |
---|
750 | * Returns the code number, or 0 |
---|
751 | */ |
---|
752 | |
---|
753 | int |
---|
754 | xmlNanoFTPCheckResponse(void *ctx) { |
---|
755 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
756 | fd_set rfd; |
---|
757 | struct timeval tv; |
---|
758 | |
---|
759 | tv.tv_sec = 0; |
---|
760 | tv.tv_usec = 0; |
---|
761 | FD_ZERO(&rfd); |
---|
762 | FD_SET(ctxt->controlFd, &rfd); |
---|
763 | switch(select(ctxt->controlFd + 1, &rfd, NULL, NULL, &tv)) { |
---|
764 | case 0: |
---|
765 | return(0); |
---|
766 | case -1: |
---|
767 | #ifdef DEBUG_FTP |
---|
768 | perror("select"); |
---|
769 | #endif |
---|
770 | return(-1); |
---|
771 | |
---|
772 | } |
---|
773 | |
---|
774 | return(xmlNanoFTPReadResponse(ctx)); |
---|
775 | } |
---|
776 | |
---|
777 | /** |
---|
778 | * Send the user authentication |
---|
779 | */ |
---|
780 | |
---|
781 | static int |
---|
782 | xmlNanoFTPSendUser(void *ctx) { |
---|
783 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
784 | char buf[200]; |
---|
785 | int len; |
---|
786 | int res; |
---|
787 | |
---|
788 | if (ctxt->user == NULL) |
---|
789 | snprintf(buf, sizeof(buf), "USER anonymous\r\n"); |
---|
790 | else |
---|
791 | snprintf(buf, sizeof(buf), "USER %s\r\n", ctxt->user); |
---|
792 | buf[sizeof(buf) - 1] = 0; |
---|
793 | len = strlen(buf); |
---|
794 | #ifdef DEBUG_FTP |
---|
795 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
796 | #endif |
---|
797 | res = send(ctxt->controlFd, buf, len, 0); |
---|
798 | if (res < 0) return(res); |
---|
799 | return(0); |
---|
800 | } |
---|
801 | |
---|
802 | /** |
---|
803 | * Send the password authentication |
---|
804 | */ |
---|
805 | |
---|
806 | static int |
---|
807 | xmlNanoFTPSendPasswd(void *ctx) { |
---|
808 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
809 | char buf[200]; |
---|
810 | int len; |
---|
811 | int res; |
---|
812 | |
---|
813 | if (ctxt->passwd == NULL) |
---|
814 | snprintf(buf, sizeof(buf), "PASS anonymous@\r\n"); |
---|
815 | else |
---|
816 | snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd); |
---|
817 | buf[sizeof(buf) - 1] = 0; |
---|
818 | len = strlen(buf); |
---|
819 | #ifdef DEBUG_FTP |
---|
820 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
821 | #endif |
---|
822 | res = send(ctxt->controlFd, buf, len, 0); |
---|
823 | if (res < 0) return(res); |
---|
824 | return(0); |
---|
825 | } |
---|
826 | |
---|
827 | /** |
---|
828 | * xmlNanoFTPQuit: |
---|
829 | * @ctx: an FTP context |
---|
830 | * |
---|
831 | * Send a QUIT command to the server |
---|
832 | * |
---|
833 | * Returns -1 in case of error, 0 otherwise |
---|
834 | */ |
---|
835 | |
---|
836 | |
---|
837 | int |
---|
838 | xmlNanoFTPQuit(void *ctx) { |
---|
839 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
840 | char buf[200]; |
---|
841 | int len; |
---|
842 | int res; |
---|
843 | |
---|
844 | snprintf(buf, sizeof(buf), "QUIT\r\n"); |
---|
845 | len = strlen(buf); |
---|
846 | #ifdef DEBUG_FTP |
---|
847 | xmlGenericError(xmlGenericErrorContext, "%s", buf); /* Just to be consistent, even though we know it can't have a % in it */ |
---|
848 | #endif |
---|
849 | res = send(ctxt->controlFd, buf, len, 0); |
---|
850 | return(0); |
---|
851 | } |
---|
852 | |
---|
853 | /** |
---|
854 | * xmlNanoFTPConnect: |
---|
855 | * @ctx: an FTP context |
---|
856 | * |
---|
857 | * Tries to open a control connection |
---|
858 | * |
---|
859 | * Returns -1 in case of error, 0 otherwise |
---|
860 | */ |
---|
861 | |
---|
862 | int |
---|
863 | xmlNanoFTPConnect(void *ctx) { |
---|
864 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
865 | struct hostent *hp; |
---|
866 | int port; |
---|
867 | int res; |
---|
868 | |
---|
869 | if (ctxt == NULL) |
---|
870 | return(-1); |
---|
871 | if (ctxt->hostname == NULL) |
---|
872 | return(-1); |
---|
873 | |
---|
874 | /* |
---|
875 | * do the blocking DNS query. |
---|
876 | */ |
---|
877 | if (proxy) |
---|
878 | hp = gethostbyname(proxy); |
---|
879 | else |
---|
880 | hp = gethostbyname(ctxt->hostname); |
---|
881 | if (hp == NULL) |
---|
882 | return(-1); |
---|
883 | |
---|
884 | /* |
---|
885 | * Prepare the socket |
---|
886 | */ |
---|
887 | memset(&ctxt->ftpAddr, 0, sizeof(ctxt->ftpAddr)); |
---|
888 | ctxt->ftpAddr.sin_family = AF_INET; |
---|
889 | memcpy(&ctxt->ftpAddr.sin_addr, hp->h_addr_list[0], hp->h_length); |
---|
890 | if (proxy) { |
---|
891 | port = proxyPort; |
---|
892 | } else { |
---|
893 | port = ctxt->port; |
---|
894 | } |
---|
895 | if (port == 0) |
---|
896 | port = 21; |
---|
897 | ctxt->ftpAddr.sin_port = htons(port); |
---|
898 | ctxt->controlFd = socket(AF_INET, SOCK_STREAM, 0); |
---|
899 | if (ctxt->controlFd < 0) |
---|
900 | return(-1); |
---|
901 | |
---|
902 | /* |
---|
903 | * Do the connect. |
---|
904 | */ |
---|
905 | if (connect(ctxt->controlFd, (struct sockaddr *) &ctxt->ftpAddr, |
---|
906 | sizeof(struct sockaddr_in)) < 0) { |
---|
907 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
908 | ctxt->controlFd = -1; |
---|
909 | return(-1); |
---|
910 | } |
---|
911 | |
---|
912 | /* |
---|
913 | * Wait for the HELLO from the server. |
---|
914 | */ |
---|
915 | res = xmlNanoFTPGetResponse(ctxt); |
---|
916 | if (res != 2) { |
---|
917 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
918 | ctxt->controlFd = -1; |
---|
919 | return(-1); |
---|
920 | } |
---|
921 | |
---|
922 | /* |
---|
923 | * State diagram for the login operation on the FTP server |
---|
924 | * |
---|
925 | * Reference: RFC 959 |
---|
926 | * |
---|
927 | * 1 |
---|
928 | * +---+ USER +---+------------->+---+ |
---|
929 | * | B |---------->| W | 2 ---->| E | |
---|
930 | * +---+ +---+------ | -->+---+ |
---|
931 | * | | | | | |
---|
932 | * 3 | | 4,5 | | | |
---|
933 | * -------------- ----- | | | |
---|
934 | * | | | | | |
---|
935 | * | | | | | |
---|
936 | * | --------- | |
---|
937 | * | 1| | | | |
---|
938 | * V | | | | |
---|
939 | * +---+ PASS +---+ 2 | ------>+---+ |
---|
940 | * | |---------->| W |------------->| S | |
---|
941 | * +---+ +---+ ---------->+---+ |
---|
942 | * | | | | | |
---|
943 | * 3 | |4,5| | | |
---|
944 | * -------------- -------- | |
---|
945 | * | | | | | |
---|
946 | * | | | | | |
---|
947 | * | ----------- |
---|
948 | * | 1,3| | | | |
---|
949 | * V | 2| | | |
---|
950 | * +---+ ACCT +---+-- | ----->+---+ |
---|
951 | * | |---------->| W | 4,5 -------->| F | |
---|
952 | * +---+ +---+------------->+---+ |
---|
953 | * |
---|
954 | * Of course in case of using a proxy this get really nasty and is not |
---|
955 | * standardized at all :-( |
---|
956 | */ |
---|
957 | if (proxy) { |
---|
958 | int len; |
---|
959 | char buf[400]; |
---|
960 | |
---|
961 | if (proxyUser != NULL) { |
---|
962 | /* |
---|
963 | * We need proxy auth |
---|
964 | */ |
---|
965 | snprintf(buf, sizeof(buf), "USER %s\r\n", proxyUser); |
---|
966 | buf[sizeof(buf) - 1] = 0; |
---|
967 | len = strlen(buf); |
---|
968 | #ifdef DEBUG_FTP |
---|
969 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
970 | #endif |
---|
971 | res = send(ctxt->controlFd, buf, len, 0); |
---|
972 | if (res < 0) { |
---|
973 | closesocket(ctxt->controlFd); |
---|
974 | ctxt->controlFd = -1; |
---|
975 | return(res); |
---|
976 | } |
---|
977 | res = xmlNanoFTPGetResponse(ctxt); |
---|
978 | switch (res) { |
---|
979 | case 2: |
---|
980 | if (proxyPasswd == NULL) |
---|
981 | break; |
---|
982 | case 3: |
---|
983 | if (proxyPasswd != NULL) |
---|
984 | snprintf(buf, sizeof(buf), "PASS %s\r\n", proxyPasswd); |
---|
985 | else |
---|
986 | snprintf(buf, sizeof(buf), "PASS anonymous@\r\n"); |
---|
987 | buf[sizeof(buf) - 1] = 0; |
---|
988 | len = strlen(buf); |
---|
989 | #ifdef DEBUG_FTP |
---|
990 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
991 | #endif |
---|
992 | res = send(ctxt->controlFd, buf, len, 0); |
---|
993 | if (res < 0) { |
---|
994 | closesocket(ctxt->controlFd); |
---|
995 | ctxt->controlFd = -1; |
---|
996 | return(res); |
---|
997 | } |
---|
998 | res = xmlNanoFTPGetResponse(ctxt); |
---|
999 | if (res > 3) { |
---|
1000 | closesocket(ctxt->controlFd); |
---|
1001 | ctxt->controlFd = -1; |
---|
1002 | return(-1); |
---|
1003 | } |
---|
1004 | break; |
---|
1005 | case 1: |
---|
1006 | break; |
---|
1007 | case 4: |
---|
1008 | case 5: |
---|
1009 | case -1: |
---|
1010 | default: |
---|
1011 | closesocket(ctxt->controlFd); |
---|
1012 | ctxt->controlFd = -1; |
---|
1013 | return(-1); |
---|
1014 | } |
---|
1015 | } |
---|
1016 | |
---|
1017 | /* |
---|
1018 | * We assume we don't need more authentication to the proxy |
---|
1019 | * and that it succeeded :-\ |
---|
1020 | */ |
---|
1021 | switch (proxyType) { |
---|
1022 | case 0: |
---|
1023 | /* we will try in sequence */ |
---|
1024 | case 1: |
---|
1025 | /* Using SITE command */ |
---|
1026 | snprintf(buf, sizeof(buf), "SITE %s\r\n", ctxt->hostname); |
---|
1027 | buf[sizeof(buf) - 1] = 0; |
---|
1028 | len = strlen(buf); |
---|
1029 | #ifdef DEBUG_FTP |
---|
1030 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1031 | #endif |
---|
1032 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1033 | if (res < 0) { |
---|
1034 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1035 | ctxt->controlFd = -1; |
---|
1036 | return(res); |
---|
1037 | } |
---|
1038 | res = xmlNanoFTPGetResponse(ctxt); |
---|
1039 | if (res == 2) { |
---|
1040 | /* we assume it worked :-\ 1 is error for SITE command */ |
---|
1041 | proxyType = 1; |
---|
1042 | break; |
---|
1043 | } |
---|
1044 | if (proxyType == 1) { |
---|
1045 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1046 | ctxt->controlFd = -1; |
---|
1047 | return(-1); |
---|
1048 | } |
---|
1049 | case 2: |
---|
1050 | /* USER user@host command */ |
---|
1051 | if (ctxt->user == NULL) |
---|
1052 | snprintf(buf, sizeof(buf), "USER anonymous@%s\r\n", |
---|
1053 | ctxt->hostname); |
---|
1054 | else |
---|
1055 | snprintf(buf, sizeof(buf), "USER %s@%s\r\n", |
---|
1056 | ctxt->user, ctxt->hostname); |
---|
1057 | buf[sizeof(buf) - 1] = 0; |
---|
1058 | len = strlen(buf); |
---|
1059 | #ifdef DEBUG_FTP |
---|
1060 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1061 | #endif |
---|
1062 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1063 | if (res < 0) { |
---|
1064 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1065 | ctxt->controlFd = -1; |
---|
1066 | return(res); |
---|
1067 | } |
---|
1068 | res = xmlNanoFTPGetResponse(ctxt); |
---|
1069 | if ((res == 1) || (res == 2)) { |
---|
1070 | /* we assume it worked :-\ */ |
---|
1071 | proxyType = 2; |
---|
1072 | return(0); |
---|
1073 | } |
---|
1074 | if (ctxt->passwd == NULL) |
---|
1075 | snprintf(buf, sizeof(buf), "PASS anonymous@\r\n"); |
---|
1076 | else |
---|
1077 | snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd); |
---|
1078 | buf[sizeof(buf) - 1] = 0; |
---|
1079 | len = strlen(buf); |
---|
1080 | #ifdef DEBUG_FTP |
---|
1081 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1082 | #endif |
---|
1083 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1084 | if (res < 0) { |
---|
1085 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1086 | ctxt->controlFd = -1; |
---|
1087 | return(res); |
---|
1088 | } |
---|
1089 | res = xmlNanoFTPGetResponse(ctxt); |
---|
1090 | if ((res == 1) || (res == 2)) { |
---|
1091 | /* we assume it worked :-\ */ |
---|
1092 | proxyType = 2; |
---|
1093 | return(0); |
---|
1094 | } |
---|
1095 | if (proxyType == 2) { |
---|
1096 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1097 | ctxt->controlFd = -1; |
---|
1098 | return(-1); |
---|
1099 | } |
---|
1100 | case 3: |
---|
1101 | /* |
---|
1102 | * If you need support for other Proxy authentication scheme |
---|
1103 | * send the code or at least the sequence in use. |
---|
1104 | */ |
---|
1105 | default: |
---|
1106 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1107 | ctxt->controlFd = -1; |
---|
1108 | return(-1); |
---|
1109 | } |
---|
1110 | } |
---|
1111 | /* |
---|
1112 | * Non-proxy handling. |
---|
1113 | */ |
---|
1114 | res = xmlNanoFTPSendUser(ctxt); |
---|
1115 | if (res < 0) { |
---|
1116 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1117 | ctxt->controlFd = -1; |
---|
1118 | return(-1); |
---|
1119 | } |
---|
1120 | res = xmlNanoFTPGetResponse(ctxt); |
---|
1121 | switch (res) { |
---|
1122 | case 2: |
---|
1123 | return(0); |
---|
1124 | case 3: |
---|
1125 | break; |
---|
1126 | case 1: |
---|
1127 | case 4: |
---|
1128 | case 5: |
---|
1129 | case -1: |
---|
1130 | default: |
---|
1131 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1132 | ctxt->controlFd = -1; |
---|
1133 | return(-1); |
---|
1134 | } |
---|
1135 | res = xmlNanoFTPSendPasswd(ctxt); |
---|
1136 | if (res < 0) { |
---|
1137 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1138 | ctxt->controlFd = -1; |
---|
1139 | return(-1); |
---|
1140 | } |
---|
1141 | res = xmlNanoFTPGetResponse(ctxt); |
---|
1142 | switch (res) { |
---|
1143 | case 2: |
---|
1144 | break; |
---|
1145 | case 3: |
---|
1146 | xmlGenericError(xmlGenericErrorContext, |
---|
1147 | "FTP server asking for ACCNT on anonymous\n"); |
---|
1148 | case 1: |
---|
1149 | case 4: |
---|
1150 | case 5: |
---|
1151 | case -1: |
---|
1152 | default: |
---|
1153 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1154 | ctxt->controlFd = -1; |
---|
1155 | return(-1); |
---|
1156 | } |
---|
1157 | |
---|
1158 | return(0); |
---|
1159 | } |
---|
1160 | |
---|
1161 | /** |
---|
1162 | * xmlNanoFTPConnectTo: |
---|
1163 | * @server: an FTP server name |
---|
1164 | * @port: the port (use 21 if 0) |
---|
1165 | * |
---|
1166 | * Tries to open a control connection to the given server/port |
---|
1167 | * |
---|
1168 | * Returns an fTP context or NULL if it failed |
---|
1169 | */ |
---|
1170 | |
---|
1171 | void* |
---|
1172 | xmlNanoFTPConnectTo(const char *server, int port) { |
---|
1173 | xmlNanoFTPCtxtPtr ctxt; |
---|
1174 | int res; |
---|
1175 | |
---|
1176 | xmlNanoFTPInit(); |
---|
1177 | if (server == NULL) |
---|
1178 | return(NULL); |
---|
1179 | ctxt = (xmlNanoFTPCtxtPtr) xmlNanoFTPNewCtxt(NULL); |
---|
1180 | ctxt->hostname = xmlMemStrdup(server); |
---|
1181 | if (port != 0) |
---|
1182 | ctxt->port = port; |
---|
1183 | res = xmlNanoFTPConnect(ctxt); |
---|
1184 | if (res < 0) { |
---|
1185 | xmlNanoFTPFreeCtxt(ctxt); |
---|
1186 | return(NULL); |
---|
1187 | } |
---|
1188 | return(ctxt); |
---|
1189 | } |
---|
1190 | |
---|
1191 | /** |
---|
1192 | * xmlNanoFTPCwd: |
---|
1193 | * @ctx: an FTP context |
---|
1194 | * @directory: a directory on the server |
---|
1195 | * |
---|
1196 | * Tries to change the remote directory |
---|
1197 | * |
---|
1198 | * Returns -1 incase of error, 1 if CWD worked, 0 if it failed |
---|
1199 | */ |
---|
1200 | |
---|
1201 | int |
---|
1202 | xmlNanoFTPCwd(void *ctx, char *directory) { |
---|
1203 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
1204 | char buf[400]; |
---|
1205 | int len; |
---|
1206 | int res; |
---|
1207 | |
---|
1208 | /* |
---|
1209 | * Expected response code for CWD: |
---|
1210 | * |
---|
1211 | * CWD |
---|
1212 | * 250 |
---|
1213 | * 500, 501, 502, 421, 530, 550 |
---|
1214 | */ |
---|
1215 | snprintf(buf, sizeof(buf), "CWD %s\r\n", directory); |
---|
1216 | buf[sizeof(buf) - 1] = 0; |
---|
1217 | len = strlen(buf); |
---|
1218 | #ifdef DEBUG_FTP |
---|
1219 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1220 | #endif |
---|
1221 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1222 | if (res < 0) return(res); |
---|
1223 | res = xmlNanoFTPGetResponse(ctxt); |
---|
1224 | if (res == 4) { |
---|
1225 | return(-1); |
---|
1226 | } |
---|
1227 | if (res == 2) return(1); |
---|
1228 | if (res == 5) { |
---|
1229 | return(0); |
---|
1230 | } |
---|
1231 | return(0); |
---|
1232 | } |
---|
1233 | |
---|
1234 | /** |
---|
1235 | * xmlNanoFTPGetConnection: |
---|
1236 | * @ctx: an FTP context |
---|
1237 | * |
---|
1238 | * Try to open a data connection to the server. Currently only |
---|
1239 | * passive mode is supported. |
---|
1240 | * |
---|
1241 | * Returns -1 incase of error, 0 otherwise |
---|
1242 | */ |
---|
1243 | |
---|
1244 | int |
---|
1245 | xmlNanoFTPGetConnection(void *ctx) { |
---|
1246 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
1247 | char buf[200], *cur; |
---|
1248 | int len, i; |
---|
1249 | int res; |
---|
1250 | unsigned char ad[6], *adp, *portp; |
---|
1251 | unsigned int temp[6]; |
---|
1252 | struct sockaddr_in dataAddr; |
---|
1253 | SOCKLEN_T dataAddrLen; |
---|
1254 | |
---|
1255 | ctxt->dataFd = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP); |
---|
1256 | if (ctxt->dataFd < 0) { |
---|
1257 | xmlGenericError(xmlGenericErrorContext, |
---|
1258 | "xmlNanoFTPGetConnection: failed to create socket\n"); |
---|
1259 | return(-1); |
---|
1260 | } |
---|
1261 | dataAddrLen = sizeof(dataAddr); |
---|
1262 | memset(&dataAddr, 0, dataAddrLen); |
---|
1263 | dataAddr.sin_family = AF_INET; |
---|
1264 | |
---|
1265 | if (ctxt->passive) { |
---|
1266 | snprintf(buf, sizeof(buf), "PASV\r\n"); |
---|
1267 | len = strlen(buf); |
---|
1268 | #ifdef DEBUG_FTP |
---|
1269 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1270 | #endif |
---|
1271 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1272 | if (res < 0) { |
---|
1273 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1274 | return(res); |
---|
1275 | } |
---|
1276 | res = xmlNanoFTPReadResponse(ctx); |
---|
1277 | if (res != 2) { |
---|
1278 | if (res == 5) { |
---|
1279 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1280 | return(-1); |
---|
1281 | } else { |
---|
1282 | /* |
---|
1283 | * retry with an active connection |
---|
1284 | */ |
---|
1285 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1286 | ctxt->passive = 0; |
---|
1287 | } |
---|
1288 | } |
---|
1289 | cur = &ctxt->controlBuf[ctxt->controlBufAnswer]; |
---|
1290 | while (((*cur < '0') || (*cur > '9')) && *cur != '\0') cur++; |
---|
1291 | if (sscanf(cur, "%u,%u,%u,%u,%u,%u", &temp[0], &temp[1], &temp[2], |
---|
1292 | &temp[3], &temp[4], &temp[5]) != 6) { |
---|
1293 | xmlGenericError(xmlGenericErrorContext, |
---|
1294 | "Invalid answer to PASV\n"); |
---|
1295 | if (ctxt->dataFd != -1) { |
---|
1296 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1297 | } |
---|
1298 | return(-1); |
---|
1299 | } |
---|
1300 | for (i=0; i<6; i++) ad[i] = (unsigned char) (temp[i] & 0xff); |
---|
1301 | memcpy(&dataAddr.sin_addr, &ad[0], 4); |
---|
1302 | memcpy(&dataAddr.sin_port, &ad[4], 2); |
---|
1303 | if (connect(ctxt->dataFd, (struct sockaddr *) &dataAddr, dataAddrLen) < 0) { |
---|
1304 | xmlGenericError(xmlGenericErrorContext, |
---|
1305 | "Failed to create a data connection\n"); |
---|
1306 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1307 | return (-1); |
---|
1308 | } |
---|
1309 | } else { |
---|
1310 | getsockname(ctxt->dataFd, (struct sockaddr *) &dataAddr, &dataAddrLen); |
---|
1311 | dataAddr.sin_port = 0; |
---|
1312 | if (bind(ctxt->dataFd, (struct sockaddr *) &dataAddr, dataAddrLen) < 0) { |
---|
1313 | xmlGenericError(xmlGenericErrorContext, |
---|
1314 | "Failed to bind a port\n"); |
---|
1315 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1316 | return (-1); |
---|
1317 | } |
---|
1318 | getsockname(ctxt->dataFd, (struct sockaddr *) &dataAddr, &dataAddrLen); |
---|
1319 | |
---|
1320 | if (listen(ctxt->dataFd, 1) < 0) { |
---|
1321 | xmlGenericError(xmlGenericErrorContext, |
---|
1322 | "Could not listen on port %d\n", |
---|
1323 | ntohs(dataAddr.sin_port)); |
---|
1324 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1325 | return (-1); |
---|
1326 | } |
---|
1327 | adp = (unsigned char *) &dataAddr.sin_addr; |
---|
1328 | portp = (unsigned char *) &dataAddr.sin_port; |
---|
1329 | snprintf(buf, sizeof(buf), "PORT %d,%d,%d,%d,%d,%d\r\n", |
---|
1330 | adp[0] & 0xff, adp[1] & 0xff, adp[2] & 0xff, adp[3] & 0xff, |
---|
1331 | portp[0] & 0xff, portp[1] & 0xff); |
---|
1332 | buf[sizeof(buf) - 1] = 0; |
---|
1333 | len = strlen(buf); |
---|
1334 | #ifdef DEBUG_FTP |
---|
1335 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1336 | #endif |
---|
1337 | |
---|
1338 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1339 | if (res < 0) { |
---|
1340 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1341 | return(res); |
---|
1342 | } |
---|
1343 | res = xmlNanoFTPGetResponse(ctxt); |
---|
1344 | if (res != 2) { |
---|
1345 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1346 | return(-1); |
---|
1347 | } |
---|
1348 | } |
---|
1349 | return(ctxt->dataFd); |
---|
1350 | |
---|
1351 | } |
---|
1352 | |
---|
1353 | /** |
---|
1354 | * xmlNanoFTPCloseConnection: |
---|
1355 | * @ctx: an FTP context |
---|
1356 | * |
---|
1357 | * Close the data connection from the server |
---|
1358 | * |
---|
1359 | * Returns -1 incase of error, 0 otherwise |
---|
1360 | */ |
---|
1361 | |
---|
1362 | int |
---|
1363 | xmlNanoFTPCloseConnection(void *ctx) { |
---|
1364 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
1365 | int res; |
---|
1366 | fd_set rfd, efd; |
---|
1367 | struct timeval tv; |
---|
1368 | |
---|
1369 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1370 | tv.tv_sec = 15; |
---|
1371 | tv.tv_usec = 0; |
---|
1372 | FD_ZERO(&rfd); |
---|
1373 | FD_SET(ctxt->controlFd, &rfd); |
---|
1374 | FD_ZERO(&efd); |
---|
1375 | FD_SET(ctxt->controlFd, &efd); |
---|
1376 | res = select(ctxt->controlFd + 1, &rfd, NULL, &efd, &tv); |
---|
1377 | if (res < 0) { |
---|
1378 | #ifdef DEBUG_FTP |
---|
1379 | perror("select"); |
---|
1380 | #endif |
---|
1381 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1382 | return(-1); |
---|
1383 | } |
---|
1384 | if (res == 0) { |
---|
1385 | #ifdef DEBUG_FTP |
---|
1386 | xmlGenericError(xmlGenericErrorContext, |
---|
1387 | "xmlNanoFTPCloseConnection: timeout\n"); |
---|
1388 | #endif |
---|
1389 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1390 | } else { |
---|
1391 | res = xmlNanoFTPGetResponse(ctxt); |
---|
1392 | if (res != 2) { |
---|
1393 | closesocket(ctxt->controlFd); ctxt->controlFd = -1; |
---|
1394 | return(-1); |
---|
1395 | } |
---|
1396 | } |
---|
1397 | return(0); |
---|
1398 | } |
---|
1399 | |
---|
1400 | /** |
---|
1401 | * xmlNanoFTPParseList: |
---|
1402 | * @list: some data listing received from the server |
---|
1403 | * @callback: the user callback |
---|
1404 | * @userData: the user callback data |
---|
1405 | * |
---|
1406 | * Parse at most one entry from the listing. |
---|
1407 | * |
---|
1408 | * Returns -1 incase of error, the length of data parsed otherwise |
---|
1409 | */ |
---|
1410 | |
---|
1411 | static int |
---|
1412 | xmlNanoFTPParseList(const char *list, ftpListCallback callback, void *userData) { |
---|
1413 | const char *cur = list; |
---|
1414 | char filename[151]; |
---|
1415 | char attrib[11]; |
---|
1416 | char owner[11]; |
---|
1417 | char group[11]; |
---|
1418 | char month[4]; |
---|
1419 | int year = 0; |
---|
1420 | int minute = 0; |
---|
1421 | int hour = 0; |
---|
1422 | int day = 0; |
---|
1423 | unsigned long size = 0; |
---|
1424 | int links = 0; |
---|
1425 | int i; |
---|
1426 | |
---|
1427 | if (!strncmp(cur, "total", 5)) { |
---|
1428 | cur += 5; |
---|
1429 | while (*cur == ' ') cur++; |
---|
1430 | while ((*cur >= '0') && (*cur <= '9')) |
---|
1431 | links = (links * 10) + (*cur++ - '0'); |
---|
1432 | while ((*cur == ' ') || (*cur == '\n') || (*cur == '\r')) |
---|
1433 | cur++; |
---|
1434 | return(cur - list); |
---|
1435 | } else if (*list == '+') { |
---|
1436 | return(0); |
---|
1437 | } else { |
---|
1438 | while ((*cur == ' ') || (*cur == '\n') || (*cur == '\r')) |
---|
1439 | cur++; |
---|
1440 | if (*cur == 0) return(0); |
---|
1441 | i = 0; |
---|
1442 | while (*cur != ' ') { |
---|
1443 | if (i < 10) |
---|
1444 | attrib[i++] = *cur; |
---|
1445 | cur++; |
---|
1446 | if (*cur == 0) return(0); |
---|
1447 | } |
---|
1448 | attrib[10] = 0; |
---|
1449 | while (*cur == ' ') cur++; |
---|
1450 | if (*cur == 0) return(0); |
---|
1451 | while ((*cur >= '0') && (*cur <= '9')) |
---|
1452 | links = (links * 10) + (*cur++ - '0'); |
---|
1453 | while (*cur == ' ') cur++; |
---|
1454 | if (*cur == 0) return(0); |
---|
1455 | i = 0; |
---|
1456 | while (*cur != ' ') { |
---|
1457 | if (i < 10) |
---|
1458 | owner[i++] = *cur; |
---|
1459 | cur++; |
---|
1460 | if (*cur == 0) return(0); |
---|
1461 | } |
---|
1462 | owner[i] = 0; |
---|
1463 | while (*cur == ' ') cur++; |
---|
1464 | if (*cur == 0) return(0); |
---|
1465 | i = 0; |
---|
1466 | while (*cur != ' ') { |
---|
1467 | if (i < 10) |
---|
1468 | group[i++] = *cur; |
---|
1469 | cur++; |
---|
1470 | if (*cur == 0) return(0); |
---|
1471 | } |
---|
1472 | group[i] = 0; |
---|
1473 | while (*cur == ' ') cur++; |
---|
1474 | if (*cur == 0) return(0); |
---|
1475 | while ((*cur >= '0') && (*cur <= '9')) |
---|
1476 | size = (size * 10) + (*cur++ - '0'); |
---|
1477 | while (*cur == ' ') cur++; |
---|
1478 | if (*cur == 0) return(0); |
---|
1479 | i = 0; |
---|
1480 | while (*cur != ' ') { |
---|
1481 | if (i < 3) |
---|
1482 | month[i++] = *cur; |
---|
1483 | cur++; |
---|
1484 | if (*cur == 0) return(0); |
---|
1485 | } |
---|
1486 | month[i] = 0; |
---|
1487 | while (*cur == ' ') cur++; |
---|
1488 | if (*cur == 0) return(0); |
---|
1489 | while ((*cur >= '0') && (*cur <= '9')) |
---|
1490 | day = (day * 10) + (*cur++ - '0'); |
---|
1491 | while (*cur == ' ') cur++; |
---|
1492 | if (*cur == 0) return(0); |
---|
1493 | if ((cur[1] == 0) || (cur[2] == 0)) return(0); |
---|
1494 | if ((cur[1] == ':') || (cur[2] == ':')) { |
---|
1495 | while ((*cur >= '0') && (*cur <= '9')) |
---|
1496 | hour = (hour * 10) + (*cur++ - '0'); |
---|
1497 | if (*cur == ':') cur++; |
---|
1498 | while ((*cur >= '0') && (*cur <= '9')) |
---|
1499 | minute = (minute * 10) + (*cur++ - '0'); |
---|
1500 | } else { |
---|
1501 | while ((*cur >= '0') && (*cur <= '9')) |
---|
1502 | year = (year * 10) + (*cur++ - '0'); |
---|
1503 | } |
---|
1504 | while (*cur == ' ') cur++; |
---|
1505 | if (*cur == 0) return(0); |
---|
1506 | i = 0; |
---|
1507 | while ((*cur != '\n') && (*cur != '\r')) { |
---|
1508 | if (i < 150) |
---|
1509 | filename[i++] = *cur; |
---|
1510 | cur++; |
---|
1511 | if (*cur == 0) return(0); |
---|
1512 | } |
---|
1513 | filename[i] = 0; |
---|
1514 | if ((*cur != '\n') && (*cur != '\r')) |
---|
1515 | return(0); |
---|
1516 | while ((*cur == '\n') || (*cur == '\r')) |
---|
1517 | cur++; |
---|
1518 | } |
---|
1519 | if (callback != NULL) { |
---|
1520 | callback(userData, filename, attrib, owner, group, size, links, |
---|
1521 | year, month, day, hour, minute); |
---|
1522 | } |
---|
1523 | return(cur - list); |
---|
1524 | } |
---|
1525 | |
---|
1526 | /** |
---|
1527 | * xmlNanoFTPList: |
---|
1528 | * @ctx: an FTP context |
---|
1529 | * @callback: the user callback |
---|
1530 | * @userData: the user callback data |
---|
1531 | * @filename: optional files to list |
---|
1532 | * |
---|
1533 | * Do a listing on the server. All files info are passed back |
---|
1534 | * in the callbacks. |
---|
1535 | * |
---|
1536 | * Returns -1 incase of error, 0 otherwise |
---|
1537 | */ |
---|
1538 | |
---|
1539 | int |
---|
1540 | xmlNanoFTPList(void *ctx, ftpListCallback callback, void *userData, |
---|
1541 | char *filename) { |
---|
1542 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
1543 | char buf[4096 + 1]; |
---|
1544 | int len, res; |
---|
1545 | int indx = 0, base; |
---|
1546 | fd_set rfd, efd; |
---|
1547 | struct timeval tv; |
---|
1548 | |
---|
1549 | if (filename == NULL) { |
---|
1550 | if (xmlNanoFTPCwd(ctxt, ctxt->path) < 1) |
---|
1551 | return(-1); |
---|
1552 | ctxt->dataFd = xmlNanoFTPGetConnection(ctxt); |
---|
1553 | if (ctxt->dataFd == -1) |
---|
1554 | return(-1); |
---|
1555 | snprintf(buf, sizeof(buf), "LIST -L\r\n"); |
---|
1556 | } else { |
---|
1557 | if (filename[0] != '/') { |
---|
1558 | if (xmlNanoFTPCwd(ctxt, ctxt->path) < 1) |
---|
1559 | return(-1); |
---|
1560 | } |
---|
1561 | ctxt->dataFd = xmlNanoFTPGetConnection(ctxt); |
---|
1562 | if (ctxt->dataFd == -1) |
---|
1563 | return(-1); |
---|
1564 | snprintf(buf, sizeof(buf), "LIST -L %s\r\n", filename); |
---|
1565 | } |
---|
1566 | buf[sizeof(buf) - 1] = 0; |
---|
1567 | len = strlen(buf); |
---|
1568 | #ifdef DEBUG_FTP |
---|
1569 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1570 | #endif |
---|
1571 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1572 | if (res < 0) { |
---|
1573 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1574 | return(res); |
---|
1575 | } |
---|
1576 | res = xmlNanoFTPReadResponse(ctxt); |
---|
1577 | if (res != 1) { |
---|
1578 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1579 | return(-res); |
---|
1580 | } |
---|
1581 | |
---|
1582 | do { |
---|
1583 | tv.tv_sec = 1; |
---|
1584 | tv.tv_usec = 0; |
---|
1585 | FD_ZERO(&rfd); |
---|
1586 | FD_SET(ctxt->dataFd, &rfd); |
---|
1587 | FD_ZERO(&efd); |
---|
1588 | FD_SET(ctxt->dataFd, &efd); |
---|
1589 | res = select(ctxt->dataFd + 1, &rfd, NULL, &efd, &tv); |
---|
1590 | if (res < 0) { |
---|
1591 | #ifdef DEBUG_FTP |
---|
1592 | perror("select"); |
---|
1593 | #endif |
---|
1594 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1595 | return(-1); |
---|
1596 | } |
---|
1597 | if (res == 0) { |
---|
1598 | res = xmlNanoFTPCheckResponse(ctxt); |
---|
1599 | if (res < 0) { |
---|
1600 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1601 | ctxt->dataFd = -1; |
---|
1602 | return(-1); |
---|
1603 | } |
---|
1604 | if (res == 2) { |
---|
1605 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1606 | return(0); |
---|
1607 | } |
---|
1608 | |
---|
1609 | continue; |
---|
1610 | } |
---|
1611 | |
---|
1612 | if ((len = recv(ctxt->dataFd, &buf[indx], sizeof(buf) - (indx + 1), 0)) < 0) { |
---|
1613 | #ifdef DEBUG_FTP |
---|
1614 | perror("recv"); |
---|
1615 | #endif |
---|
1616 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1617 | ctxt->dataFd = -1; |
---|
1618 | return(-1); |
---|
1619 | } |
---|
1620 | #ifdef DEBUG_FTP |
---|
1621 | write(1, &buf[indx], len); |
---|
1622 | #endif |
---|
1623 | indx += len; |
---|
1624 | buf[indx] = 0; |
---|
1625 | base = 0; |
---|
1626 | do { |
---|
1627 | res = xmlNanoFTPParseList(&buf[base], callback, userData); |
---|
1628 | base += res; |
---|
1629 | } while (res > 0); |
---|
1630 | |
---|
1631 | memmove(&buf[0], &buf[base], indx - base); |
---|
1632 | indx -= base; |
---|
1633 | } while (len != 0); |
---|
1634 | xmlNanoFTPCloseConnection(ctxt); |
---|
1635 | return(0); |
---|
1636 | } |
---|
1637 | |
---|
1638 | /** |
---|
1639 | * xmlNanoFTPGetSocket: |
---|
1640 | * @ctx: an FTP context |
---|
1641 | * @filename: the file to retrieve (or NULL if path is in context). |
---|
1642 | * |
---|
1643 | * Initiate fetch of the given file from the server. |
---|
1644 | * |
---|
1645 | * Returns the socket for the data connection, or <0 in case of error |
---|
1646 | */ |
---|
1647 | |
---|
1648 | |
---|
1649 | int |
---|
1650 | xmlNanoFTPGetSocket(void *ctx, const char *filename) { |
---|
1651 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
1652 | char buf[300]; |
---|
1653 | int res, len; |
---|
1654 | if ((filename == NULL) && (ctxt->path == NULL)) |
---|
1655 | return(-1); |
---|
1656 | ctxt->dataFd = xmlNanoFTPGetConnection(ctxt); |
---|
1657 | if (ctxt->dataFd == -1) |
---|
1658 | return(-1); |
---|
1659 | |
---|
1660 | snprintf(buf, sizeof(buf), "TYPE I\r\n"); |
---|
1661 | len = strlen(buf); |
---|
1662 | #ifdef DEBUG_FTP |
---|
1663 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1664 | #endif |
---|
1665 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1666 | if (res < 0) { |
---|
1667 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1668 | return(res); |
---|
1669 | } |
---|
1670 | res = xmlNanoFTPReadResponse(ctxt); |
---|
1671 | if (res != 2) { |
---|
1672 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1673 | return(-res); |
---|
1674 | } |
---|
1675 | if (filename == NULL) |
---|
1676 | snprintf(buf, sizeof(buf), "RETR %s\r\n", ctxt->path); |
---|
1677 | else |
---|
1678 | snprintf(buf, sizeof(buf), "RETR %s\r\n", filename); |
---|
1679 | buf[sizeof(buf) - 1] = 0; |
---|
1680 | len = strlen(buf); |
---|
1681 | #ifdef DEBUG_FTP |
---|
1682 | xmlGenericError(xmlGenericErrorContext, "%s", buf); |
---|
1683 | #endif |
---|
1684 | res = send(ctxt->controlFd, buf, len, 0); |
---|
1685 | if (res < 0) { |
---|
1686 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1687 | return(res); |
---|
1688 | } |
---|
1689 | res = xmlNanoFTPReadResponse(ctxt); |
---|
1690 | if (res != 1) { |
---|
1691 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1692 | return(-res); |
---|
1693 | } |
---|
1694 | return(ctxt->dataFd); |
---|
1695 | } |
---|
1696 | |
---|
1697 | /** |
---|
1698 | * xmlNanoFTPGet: |
---|
1699 | * @ctx: an FTP context |
---|
1700 | * @callback: the user callback |
---|
1701 | * @userData: the user callback data |
---|
1702 | * @filename: the file to retrieve |
---|
1703 | * |
---|
1704 | * Fetch the given file from the server. All data are passed back |
---|
1705 | * in the callbacks. The last callback has a size of 0 block. |
---|
1706 | * |
---|
1707 | * Returns -1 incase of error, 0 otherwise |
---|
1708 | */ |
---|
1709 | |
---|
1710 | int |
---|
1711 | xmlNanoFTPGet(void *ctx, ftpDataCallback callback, void *userData, |
---|
1712 | const char *filename) { |
---|
1713 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
1714 | char buf[4096]; |
---|
1715 | int len = 0, res; |
---|
1716 | fd_set rfd; |
---|
1717 | struct timeval tv; |
---|
1718 | |
---|
1719 | if ((filename == NULL) && (ctxt->path == NULL)) |
---|
1720 | return(-1); |
---|
1721 | if (callback == NULL) |
---|
1722 | return(-1); |
---|
1723 | if (xmlNanoFTPGetSocket(ctxt, filename) < 0) |
---|
1724 | return(-1); |
---|
1725 | |
---|
1726 | do { |
---|
1727 | tv.tv_sec = 1; |
---|
1728 | tv.tv_usec = 0; |
---|
1729 | FD_ZERO(&rfd); |
---|
1730 | FD_SET(ctxt->dataFd, &rfd); |
---|
1731 | res = select(ctxt->dataFd + 1, &rfd, NULL, NULL, &tv); |
---|
1732 | if (res < 0) { |
---|
1733 | #ifdef DEBUG_FTP |
---|
1734 | perror("select"); |
---|
1735 | #endif |
---|
1736 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1737 | return(-1); |
---|
1738 | } |
---|
1739 | if (res == 0) { |
---|
1740 | res = xmlNanoFTPCheckResponse(ctxt); |
---|
1741 | if (res < 0) { |
---|
1742 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1743 | ctxt->dataFd = -1; |
---|
1744 | return(-1); |
---|
1745 | } |
---|
1746 | if (res == 2) { |
---|
1747 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1748 | return(0); |
---|
1749 | } |
---|
1750 | |
---|
1751 | continue; |
---|
1752 | } |
---|
1753 | if ((len = recv(ctxt->dataFd, buf, sizeof(buf), 0)) < 0) { |
---|
1754 | callback(userData, buf, len); |
---|
1755 | closesocket(ctxt->dataFd); ctxt->dataFd = -1; |
---|
1756 | return(-1); |
---|
1757 | } |
---|
1758 | callback(userData, buf, len); |
---|
1759 | } while (len != 0); |
---|
1760 | |
---|
1761 | return(xmlNanoFTPCloseConnection(ctxt)); |
---|
1762 | } |
---|
1763 | |
---|
1764 | /** |
---|
1765 | * xmlNanoFTPRead: |
---|
1766 | * @ctx: the FTP context |
---|
1767 | * @dest: a buffer |
---|
1768 | * @len: the buffer length |
---|
1769 | * |
---|
1770 | * This function tries to read @len bytes from the existing FTP connection |
---|
1771 | * and saves them in @dest. This is a blocking call. |
---|
1772 | * |
---|
1773 | * Returns the number of byte read. 0 is an indication of an end of connection. |
---|
1774 | * -1 indicates a parameter error. |
---|
1775 | */ |
---|
1776 | int |
---|
1777 | xmlNanoFTPRead(void *ctx, void *dest, int len) { |
---|
1778 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
1779 | |
---|
1780 | if (ctx == NULL) return(-1); |
---|
1781 | if (ctxt->dataFd < 0) return(0); |
---|
1782 | if (dest == NULL) return(-1); |
---|
1783 | if (len <= 0) return(0); |
---|
1784 | |
---|
1785 | len = recv(ctxt->dataFd, dest, len, 0); |
---|
1786 | #ifdef DEBUG_FTP |
---|
1787 | xmlGenericError(xmlGenericErrorContext, "Recvd %d bytes\n", len); |
---|
1788 | #endif |
---|
1789 | if (len <= 0) { |
---|
1790 | xmlNanoFTPCloseConnection(ctxt); |
---|
1791 | } |
---|
1792 | return(len); |
---|
1793 | } |
---|
1794 | |
---|
1795 | /** |
---|
1796 | * xmlNanoFTPOpen: |
---|
1797 | * @URL: the URL to the resource |
---|
1798 | * |
---|
1799 | * Start to fetch the given ftp:// resource |
---|
1800 | * |
---|
1801 | * Returns an FTP context, or NULL |
---|
1802 | */ |
---|
1803 | |
---|
1804 | void* |
---|
1805 | xmlNanoFTPOpen(const char *URL) { |
---|
1806 | xmlNanoFTPCtxtPtr ctxt; |
---|
1807 | int sock; |
---|
1808 | |
---|
1809 | xmlNanoFTPInit(); |
---|
1810 | if (URL == NULL) return(NULL); |
---|
1811 | if (strncmp("ftp://", URL, 6)) return(NULL); |
---|
1812 | |
---|
1813 | ctxt = (xmlNanoFTPCtxtPtr) xmlNanoFTPNewCtxt(URL); |
---|
1814 | if (ctxt == NULL) return(NULL); |
---|
1815 | if (xmlNanoFTPConnect(ctxt) < 0) { |
---|
1816 | xmlNanoFTPFreeCtxt(ctxt); |
---|
1817 | return(NULL); |
---|
1818 | } |
---|
1819 | sock = xmlNanoFTPGetSocket(ctxt, ctxt->path); |
---|
1820 | if (sock < 0) { |
---|
1821 | xmlNanoFTPFreeCtxt(ctxt); |
---|
1822 | return(NULL); |
---|
1823 | } |
---|
1824 | return(ctxt); |
---|
1825 | } |
---|
1826 | |
---|
1827 | /** |
---|
1828 | * xmlNanoFTPClose: |
---|
1829 | * @ctx: an FTP context |
---|
1830 | * |
---|
1831 | * Close the connection and both control and transport |
---|
1832 | * |
---|
1833 | * Returns -1 incase of error, 0 otherwise |
---|
1834 | */ |
---|
1835 | |
---|
1836 | int |
---|
1837 | xmlNanoFTPClose(void *ctx) { |
---|
1838 | xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx; |
---|
1839 | |
---|
1840 | if (ctxt == NULL) |
---|
1841 | return(-1); |
---|
1842 | |
---|
1843 | if (ctxt->dataFd >= 0) { |
---|
1844 | closesocket(ctxt->dataFd); |
---|
1845 | ctxt->dataFd = -1; |
---|
1846 | } |
---|
1847 | if (ctxt->controlFd >= 0) { |
---|
1848 | xmlNanoFTPQuit(ctxt); |
---|
1849 | closesocket(ctxt->controlFd); |
---|
1850 | ctxt->controlFd = -1; |
---|
1851 | } |
---|
1852 | xmlNanoFTPFreeCtxt(ctxt); |
---|
1853 | return(0); |
---|
1854 | } |
---|
1855 | |
---|
1856 | #ifdef STANDALONE |
---|
1857 | /************************************************************************ |
---|
1858 | * * |
---|
1859 | * Basic test in Standalone mode * |
---|
1860 | * * |
---|
1861 | ************************************************************************/ |
---|
1862 | static |
---|
1863 | void ftpList(void *userData, const char *filename, const char* attrib, |
---|
1864 | const char *owner, const char *group, unsigned long size, int links, |
---|
1865 | int year, const char *month, int day, int hour, int minute) { |
---|
1866 | xmlGenericError(xmlGenericErrorContext, |
---|
1867 | "%s %s %s %ld %s\n", attrib, owner, group, size, filename); |
---|
1868 | } |
---|
1869 | static |
---|
1870 | void ftpData(void *userData, const char *data, int len) { |
---|
1871 | if (userData == NULL) return; |
---|
1872 | if (len <= 0) { |
---|
1873 | fclose(userData); |
---|
1874 | return; |
---|
1875 | } |
---|
1876 | fwrite(data, len, 1, userData); |
---|
1877 | } |
---|
1878 | |
---|
1879 | int main(int argc, char **argv) { |
---|
1880 | void *ctxt; |
---|
1881 | FILE *output; |
---|
1882 | char *tstfile = NULL; |
---|
1883 | |
---|
1884 | xmlNanoFTPInit(); |
---|
1885 | if (argc > 1) { |
---|
1886 | ctxt = xmlNanoFTPNewCtxt(argv[1]); |
---|
1887 | if (xmlNanoFTPConnect(ctxt) < 0) { |
---|
1888 | xmlGenericError(xmlGenericErrorContext, |
---|
1889 | "Couldn't connect to %s\n", argv[1]); |
---|
1890 | exit(1); |
---|
1891 | } |
---|
1892 | if (argc > 2) |
---|
1893 | tstfile = argv[2]; |
---|
1894 | } else |
---|
1895 | ctxt = xmlNanoFTPConnectTo("localhost", 0); |
---|
1896 | if (ctxt == NULL) { |
---|
1897 | xmlGenericError(xmlGenericErrorContext, |
---|
1898 | "Couldn't connect to localhost\n"); |
---|
1899 | exit(1); |
---|
1900 | } |
---|
1901 | xmlNanoFTPList(ctxt, ftpList, NULL, tstfile); |
---|
1902 | output = fopen("/tmp/tstdata", "w"); |
---|
1903 | if (output != NULL) { |
---|
1904 | if (xmlNanoFTPGet(ctxt, ftpData, (void *) output, tstfile) < 0) |
---|
1905 | xmlGenericError(xmlGenericErrorContext, |
---|
1906 | "Failed to get file\n"); |
---|
1907 | |
---|
1908 | } |
---|
1909 | xmlNanoFTPClose(ctxt); |
---|
1910 | xmlMemoryDump(); |
---|
1911 | exit(0); |
---|
1912 | } |
---|
1913 | #endif /* STANDALONE */ |
---|
1914 | #else /* !LIBXML_FTP_ENABLED */ |
---|
1915 | #ifdef STANDALONE |
---|
1916 | #include <stdio.h> |
---|
1917 | int main(int argc, char **argv) { |
---|
1918 | xmlGenericError(xmlGenericErrorContext, |
---|
1919 | "%s : FTP support not compiled in\n", argv[0]); |
---|
1920 | return(0); |
---|
1921 | } |
---|
1922 | #endif /* STANDALONE */ |
---|
1923 | #endif /* LIBXML_FTP_ENABLED */ |
---|