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 #endif /* TESTING */
16
17 #define IN_LIBXML
18 #include "libxml.h"
19
20 #ifdef LIBXML_FTP_ENABLED
21 #include <string.h>
22
23 #ifdef HAVE_STDLIB_H
24 #include <stdlib.h>
25 #endif
26 #ifdef HAVE_UNISTD_H
27 #include <unistd.h>
28 #endif
29 #ifdef HAVE_SYS_SOCKET_H
30 #include <sys/socket.h>
31 #endif
32 #ifdef HAVE_NETINET_IN_H
33 #include <netinet/in.h>
34 #endif
35 #ifdef HAVE_ARPA_INET_H
36 #include <arpa/inet.h>
37 #endif
38 #ifdef HAVE_NETDB_H
39 #include <netdb.h>
40 #endif
41 #ifdef HAVE_FCNTL_H
42 #include <fcntl.h>
43 #endif
44 #ifdef HAVE_ERRNO_H
45 #include <errno.h>
46 #endif
47 #ifdef HAVE_SYS_TIME_H
48 #include <sys/time.h>
49 #endif
50 #ifdef HAVE_SYS_SELECT_H
51 #include <sys/select.h>
52 #endif
53 #ifdef HAVE_SYS_SOCKET_H
54 #include <sys/socket.h>
55 #endif
56 #ifdef HAVE_SYS_TYPES_H
57 #include <sys/types.h>
58 #endif
59 #ifdef HAVE_STRINGS_H
60 #include <strings.h>
61 #endif
62
63 #include <libxml/xmlmemory.h>
64 #include <libxml/parser.h>
65 #include <libxml/xmlerror.h>
66 #include <libxml/uri.h>
67 #include <libxml/nanoftp.h>
68 #include <libxml/globals.h>
69
70 /* #define DEBUG_FTP 1 */
71 #ifdef STANDALONE
72 #ifndef DEBUG_FTP
73 #define DEBUG_FTP 1
74 #endif
75 #endif
76
77
78 #if defined(_WIN32) && !defined(__CYGWIN__)
79 #include <wsockcompat.h>
80 #endif
81
82 /**
83 * A couple portability macros
84 */
85 #ifndef _WINSOCKAPI_
86 #if !defined(__BEOS__) || defined(__HAIKU__)
87 #define closesocket(s) close(s)
88 #endif
89 #endif
90
91 #ifdef __BEOS__
92 #ifndef PF_INET
93 #define PF_INET AF_INET
94 #endif
95 #endif
96
97 #ifdef _AIX
98 #ifdef HAVE_BROKEN_SS_FAMILY
99 #define ss_family __ss_family
100 #endif
101 #endif
102
103 #ifndef XML_SOCKLEN_T
104 #define XML_SOCKLEN_T unsigned int
105 #endif
106
107 #define FTP_COMMAND_OK 200
108 #define FTP_SYNTAX_ERROR 500
109 #define FTP_GET_PASSWD 331
110 #define FTP_BUF_SIZE 1024
111
112 #define XML_NANO_MAX_URLBUF 4096
113
114 typedef struct xmlNanoFTPCtxt {
115 char *protocol; /* the protocol name */
116 char *hostname; /* the host name */
117 int port; /* the port */
118 char *path; /* the path within the URL */
119 char *user; /* user string */
120 char *passwd; /* passwd string */
121 #ifdef SUPPORT_IP6
122 struct sockaddr_storage ftpAddr; /* this is large enough to hold IPv6 address*/
123 #else
124 struct sockaddr_in ftpAddr; /* the socket address struct */
125 #endif
126 int passive; /* currently we support only passive !!! */
127 SOCKET controlFd; /* the file descriptor for the control socket */
128 SOCKET dataFd; /* the file descriptor for the data socket */
129 int state; /* WRITE / READ / CLOSED */
130 int returnValue; /* the protocol return value */
131 /* buffer for data received from the control connection */
132 char controlBuf[FTP_BUF_SIZE + 1];
133 int controlBufIndex;
134 int controlBufUsed;
135 int controlBufAnswer;
136 } xmlNanoFTPCtxt, *xmlNanoFTPCtxtPtr;
137
138 static int initialized = 0;
139 static char *proxy = NULL; /* the proxy name if any */
140 static int proxyPort = 0; /* the proxy port if any */
141 static char *proxyUser = NULL; /* user for proxy authentication */
142 static char *proxyPasswd = NULL;/* passwd for proxy authentication */
143 static int proxyType = 0; /* uses TYPE or a@b ? */
144
145 #ifdef SUPPORT_IP6
146 static
have_ipv6(void)147 int have_ipv6(void) {
148 int s;
149
150 s = socket (AF_INET6, SOCK_STREAM, 0);
151 if (s != -1) {
152 close (s);
153 return (1);
154 }
155 return (0);
156 }
157 #endif
158
159 /**
160 * xmlFTPErrMemory:
161 * @extra: extra informations
162 *
163 * Handle an out of memory condition
164 */
165 static void
xmlFTPErrMemory(const char * extra)166 xmlFTPErrMemory(const char *extra)
167 {
168 __xmlSimpleError(XML_FROM_FTP, XML_ERR_NO_MEMORY, NULL, NULL, extra);
169 }
170
171 /**
172 * xmlNanoFTPInit:
173 *
174 * Initialize the FTP protocol layer.
175 * Currently it just checks for proxy informations,
176 * and get the hostname
177 */
178
179 void
xmlNanoFTPInit(void)180 xmlNanoFTPInit(void) {
181 const char *env;
182 #ifdef _WINSOCKAPI_
183 WSADATA wsaData;
184 #endif
185
186 if (initialized)
187 return;
188
189 #ifdef _WINSOCKAPI_
190 if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0)
191 return;
192 #endif
193
194 proxyPort = 21;
195 env = getenv("no_proxy");
196 if (env && ((env[0] == '*' ) && (env[1] == 0)))
197 return;
198 env = getenv("ftp_proxy");
199 if (env != NULL) {
200 xmlNanoFTPScanProxy(env);
201 } else {
202 env = getenv("FTP_PROXY");
203 if (env != NULL) {
204 xmlNanoFTPScanProxy(env);
205 }
206 }
207 env = getenv("ftp_proxy_user");
208 if (env != NULL) {
209 proxyUser = xmlMemStrdup(env);
210 }
211 env = getenv("ftp_proxy_password");
212 if (env != NULL) {
213 proxyPasswd = xmlMemStrdup(env);
214 }
215 initialized = 1;
216 }
217
218 /**
219 * xmlNanoFTPCleanup:
220 *
221 * Cleanup the FTP protocol layer. This cleanup proxy informations.
222 */
223
224 void
xmlNanoFTPCleanup(void)225 xmlNanoFTPCleanup(void) {
226 if (proxy != NULL) {
227 xmlFree(proxy);
228 proxy = NULL;
229 }
230 if (proxyUser != NULL) {
231 xmlFree(proxyUser);
232 proxyUser = NULL;
233 }
234 if (proxyPasswd != NULL) {
235 xmlFree(proxyPasswd);
236 proxyPasswd = NULL;
237 }
238 #ifdef _WINSOCKAPI_
239 if (initialized)
240 WSACleanup();
241 #endif
242 initialized = 0;
243 }
244
245 /**
246 * xmlNanoFTPProxy:
247 * @host: the proxy host name
248 * @port: the proxy port
249 * @user: the proxy user name
250 * @passwd: the proxy password
251 * @type: the type of proxy 1 for using SITE, 2 for USER a@b
252 *
253 * Setup the FTP proxy informations.
254 * This can also be done by using ftp_proxy ftp_proxy_user and
255 * ftp_proxy_password environment variables.
256 */
257
258 void
xmlNanoFTPProxy(const char * host,int port,const char * user,const char * passwd,int type)259 xmlNanoFTPProxy(const char *host, int port, const char *user,
260 const char *passwd, int type) {
261 if (proxy != NULL) {
262 xmlFree(proxy);
263 proxy = NULL;
264 }
265 if (proxyUser != NULL) {
266 xmlFree(proxyUser);
267 proxyUser = NULL;
268 }
269 if (proxyPasswd != NULL) {
270 xmlFree(proxyPasswd);
271 proxyPasswd = NULL;
272 }
273 if (host)
274 proxy = xmlMemStrdup(host);
275 if (user)
276 proxyUser = xmlMemStrdup(user);
277 if (passwd)
278 proxyPasswd = xmlMemStrdup(passwd);
279 proxyPort = port;
280 proxyType = type;
281 }
282
283 /**
284 * xmlNanoFTPScanURL:
285 * @ctx: an FTP context
286 * @URL: The URL used to initialize the context
287 *
288 * (Re)Initialize an FTP context by parsing the URL and finding
289 * the protocol host port and path it indicates.
290 */
291
292 static void
xmlNanoFTPScanURL(void * ctx,const char * URL)293 xmlNanoFTPScanURL(void *ctx, const char *URL) {
294 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
295 xmlURIPtr uri;
296
297 /*
298 * Clear any existing data from the context
299 */
300 if (ctxt->protocol != NULL) {
301 xmlFree(ctxt->protocol);
302 ctxt->protocol = NULL;
303 }
304 if (ctxt->hostname != NULL) {
305 xmlFree(ctxt->hostname);
306 ctxt->hostname = NULL;
307 }
308 if (ctxt->path != NULL) {
309 xmlFree(ctxt->path);
310 ctxt->path = NULL;
311 }
312 if (URL == NULL) return;
313
314 uri = xmlParseURIRaw(URL, 1);
315 if (uri == NULL)
316 return;
317
318 if ((uri->scheme == NULL) || (uri->server == NULL)) {
319 xmlFreeURI(uri);
320 return;
321 }
322
323 ctxt->protocol = xmlMemStrdup(uri->scheme);
324 ctxt->hostname = xmlMemStrdup(uri->server);
325 if (uri->path != NULL)
326 ctxt->path = xmlMemStrdup(uri->path);
327 else
328 ctxt->path = xmlMemStrdup("/");
329 if (uri->port != 0)
330 ctxt->port = uri->port;
331
332 if (uri->user != NULL) {
333 char *cptr;
334 if ((cptr=strchr(uri->user, ':')) == NULL)
335 ctxt->user = xmlMemStrdup(uri->user);
336 else {
337 ctxt->user = (char *)xmlStrndup((xmlChar *)uri->user,
338 (cptr - uri->user));
339 ctxt->passwd = xmlMemStrdup(cptr+1);
340 }
341 }
342
343 xmlFreeURI(uri);
344
345 }
346
347 /**
348 * xmlNanoFTPUpdateURL:
349 * @ctx: an FTP context
350 * @URL: The URL used to update the context
351 *
352 * Update an FTP context by parsing the URL and finding
353 * new path it indicates. If there is an error in the
354 * protocol, hostname, port or other information, the
355 * error is raised. It indicates a new connection has to
356 * be established.
357 *
358 * Returns 0 if Ok, -1 in case of error (other host).
359 */
360
361 int
xmlNanoFTPUpdateURL(void * ctx,const char * URL)362 xmlNanoFTPUpdateURL(void *ctx, const char *URL) {
363 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
364 xmlURIPtr uri;
365
366 if (URL == NULL)
367 return(-1);
368 if (ctxt == NULL)
369 return(-1);
370 if (ctxt->protocol == NULL)
371 return(-1);
372 if (ctxt->hostname == NULL)
373 return(-1);
374
375 uri = xmlParseURIRaw(URL, 1);
376 if (uri == NULL)
377 return(-1);
378
379 if ((uri->scheme == NULL) || (uri->server == NULL)) {
380 xmlFreeURI(uri);
381 return(-1);
382 }
383 if ((strcmp(ctxt->protocol, uri->scheme)) ||
384 (strcmp(ctxt->hostname, uri->server)) ||
385 ((uri->port != 0) && (ctxt->port != uri->port))) {
386 xmlFreeURI(uri);
387 return(-1);
388 }
389
390 if (uri->port != 0)
391 ctxt->port = uri->port;
392
393 if (ctxt->path != NULL) {
394 xmlFree(ctxt->path);
395 ctxt->path = NULL;
396 }
397
398 if (uri->path == NULL)
399 ctxt->path = xmlMemStrdup("/");
400 else
401 ctxt->path = xmlMemStrdup(uri->path);
402
403 xmlFreeURI(uri);
404
405 return(0);
406 }
407
408 /**
409 * xmlNanoFTPScanProxy:
410 * @URL: The proxy URL used to initialize the proxy context
411 *
412 * (Re)Initialize the FTP Proxy context by parsing the URL and finding
413 * the protocol host port it indicates.
414 * Should be like ftp://myproxy/ or ftp://myproxy:3128/
415 * A NULL URL cleans up proxy informations.
416 */
417
418 void
xmlNanoFTPScanProxy(const char * URL)419 xmlNanoFTPScanProxy(const char *URL) {
420 xmlURIPtr uri;
421
422 if (proxy != NULL) {
423 xmlFree(proxy);
424 proxy = NULL;
425 }
426 proxyPort = 0;
427
428 #ifdef DEBUG_FTP
429 if (URL == NULL)
430 xmlGenericError(xmlGenericErrorContext,
431 "Removing FTP proxy info\n");
432 else
433 xmlGenericError(xmlGenericErrorContext,
434 "Using FTP proxy %s\n", URL);
435 #endif
436 if (URL == NULL) return;
437
438 uri = xmlParseURIRaw(URL, 1);
439 if ((uri == NULL) || (uri->scheme == NULL) ||
440 (strcmp(uri->scheme, "ftp")) || (uri->server == NULL)) {
441 __xmlIOErr(XML_FROM_FTP, XML_FTP_URL_SYNTAX, "Syntax Error\n");
442 if (uri != NULL)
443 xmlFreeURI(uri);
444 return;
445 }
446
447 proxy = xmlMemStrdup(uri->server);
448 if (uri->port != 0)
449 proxyPort = uri->port;
450
451 xmlFreeURI(uri);
452 }
453
454 /**
455 * xmlNanoFTPNewCtxt:
456 * @URL: The URL used to initialize the context
457 *
458 * Allocate and initialize a new FTP context.
459 *
460 * Returns an FTP context or NULL in case of error.
461 */
462
463 void*
xmlNanoFTPNewCtxt(const char * URL)464 xmlNanoFTPNewCtxt(const char *URL) {
465 xmlNanoFTPCtxtPtr ret;
466 char *unescaped;
467
468 ret = (xmlNanoFTPCtxtPtr) xmlMalloc(sizeof(xmlNanoFTPCtxt));
469 if (ret == NULL) {
470 xmlFTPErrMemory("allocating FTP context");
471 return(NULL);
472 }
473
474 memset(ret, 0, sizeof(xmlNanoFTPCtxt));
475 ret->port = 21;
476 ret->passive = 1;
477 ret->returnValue = 0;
478 ret->controlBufIndex = 0;
479 ret->controlBufUsed = 0;
480 ret->controlFd = INVALID_SOCKET;
481
482 unescaped = xmlURIUnescapeString(URL, 0, NULL);
483 if (unescaped != NULL) {
484 xmlNanoFTPScanURL(ret, unescaped);
485 xmlFree(unescaped);
486 } else if (URL != NULL)
487 xmlNanoFTPScanURL(ret, URL);
488
489 return(ret);
490 }
491
492 /**
493 * xmlNanoFTPFreeCtxt:
494 * @ctx: an FTP context
495 *
496 * Frees the context after closing the connection.
497 */
498
499 void
xmlNanoFTPFreeCtxt(void * ctx)500 xmlNanoFTPFreeCtxt(void * ctx) {
501 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
502 if (ctxt == NULL) return;
503 if (ctxt->hostname != NULL) xmlFree(ctxt->hostname);
504 if (ctxt->protocol != NULL) xmlFree(ctxt->protocol);
505 if (ctxt->path != NULL) xmlFree(ctxt->path);
506 if (ctxt->user != NULL) xmlFree(ctxt->user);
507 if (ctxt->passwd != NULL) xmlFree(ctxt->passwd);
508 ctxt->passive = 1;
509 if (ctxt->controlFd != INVALID_SOCKET) closesocket(ctxt->controlFd);
510 ctxt->controlFd = INVALID_SOCKET;
511 ctxt->controlBufIndex = -1;
512 ctxt->controlBufUsed = -1;
513 xmlFree(ctxt);
514 }
515
516 /**
517 * xmlNanoFTPParseResponse:
518 * @buf: the buffer containing the response
519 * @len: the buffer length
520 *
521 * Parsing of the server answer, we just extract the code.
522 *
523 * returns 0 for errors
524 * +XXX for last line of response
525 * -XXX for response to be continued
526 */
527 static int
xmlNanoFTPParseResponse(char * buf,int len)528 xmlNanoFTPParseResponse(char *buf, int len) {
529 int val = 0;
530
531 if (len < 3) return(-1);
532 if ((*buf >= '0') && (*buf <= '9'))
533 val = val * 10 + (*buf - '0');
534 else
535 return(0);
536 buf++;
537 if ((*buf >= '0') && (*buf <= '9'))
538 val = val * 10 + (*buf - '0');
539 else
540 return(0);
541 buf++;
542 if ((*buf >= '0') && (*buf <= '9'))
543 val = val * 10 + (*buf - '0');
544 else
545 return(0);
546 buf++;
547 if (*buf == '-')
548 return(-val);
549 return(val);
550 }
551
552 /**
553 * xmlNanoFTPGetMore:
554 * @ctx: an FTP context
555 *
556 * Read more information from the FTP control connection
557 * Returns the number of bytes read, < 0 indicates an error
558 */
559 static int
xmlNanoFTPGetMore(void * ctx)560 xmlNanoFTPGetMore(void *ctx) {
561 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
562 int len;
563 int size;
564
565 if ((ctxt == NULL) || (ctxt->controlFd == INVALID_SOCKET)) return(-1);
566
567 if ((ctxt->controlBufIndex < 0) || (ctxt->controlBufIndex > FTP_BUF_SIZE)) {
568 #ifdef DEBUG_FTP
569 xmlGenericError(xmlGenericErrorContext,
570 "xmlNanoFTPGetMore : controlBufIndex = %d\n",
571 ctxt->controlBufIndex);
572 #endif
573 return(-1);
574 }
575
576 if ((ctxt->controlBufUsed < 0) || (ctxt->controlBufUsed > FTP_BUF_SIZE)) {
577 #ifdef DEBUG_FTP
578 xmlGenericError(xmlGenericErrorContext,
579 "xmlNanoFTPGetMore : controlBufUsed = %d\n",
580 ctxt->controlBufUsed);
581 #endif
582 return(-1);
583 }
584 if (ctxt->controlBufIndex > ctxt->controlBufUsed) {
585 #ifdef DEBUG_FTP
586 xmlGenericError(xmlGenericErrorContext,
587 "xmlNanoFTPGetMore : controlBufIndex > controlBufUsed %d > %d\n",
588 ctxt->controlBufIndex, ctxt->controlBufUsed);
589 #endif
590 return(-1);
591 }
592
593 /*
594 * First pack the control buffer
595 */
596 if (ctxt->controlBufIndex > 0) {
597 memmove(&ctxt->controlBuf[0], &ctxt->controlBuf[ctxt->controlBufIndex],
598 ctxt->controlBufUsed - ctxt->controlBufIndex);
599 ctxt->controlBufUsed -= ctxt->controlBufIndex;
600 ctxt->controlBufIndex = 0;
601 }
602 size = FTP_BUF_SIZE - ctxt->controlBufUsed;
603 if (size == 0) {
604 #ifdef DEBUG_FTP
605 xmlGenericError(xmlGenericErrorContext,
606 "xmlNanoFTPGetMore : buffer full %d \n", ctxt->controlBufUsed);
607 #endif
608 return(0);
609 }
610
611 /*
612 * Read the amount left on the control connection
613 */
614 if ((len = recv(ctxt->controlFd, &ctxt->controlBuf[ctxt->controlBufIndex],
615 size, 0)) < 0) {
616 __xmlIOErr(XML_FROM_FTP, 0, "recv failed");
617 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
618 ctxt->controlFd = INVALID_SOCKET;
619 return(-1);
620 }
621 #ifdef DEBUG_FTP
622 xmlGenericError(xmlGenericErrorContext,
623 "xmlNanoFTPGetMore : read %d [%d - %d]\n", len,
624 ctxt->controlBufUsed, ctxt->controlBufUsed + len);
625 #endif
626 ctxt->controlBufUsed += len;
627 ctxt->controlBuf[ctxt->controlBufUsed] = 0;
628
629 return(len);
630 }
631
632 /**
633 * xmlNanoFTPReadResponse:
634 * @ctx: an FTP context
635 *
636 * Read the response from the FTP server after a command.
637 * Returns the code number
638 */
639 static int
xmlNanoFTPReadResponse(void * ctx)640 xmlNanoFTPReadResponse(void *ctx) {
641 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
642 char *ptr, *end;
643 int len;
644 int res = -1, cur = -1;
645
646 if ((ctxt == NULL) || (ctxt->controlFd == INVALID_SOCKET)) return(-1);
647
648 get_more:
649 /*
650 * Assumes everything up to controlBuf[controlBufIndex] has been read
651 * and analyzed.
652 */
653 len = xmlNanoFTPGetMore(ctx);
654 if (len < 0) {
655 return(-1);
656 }
657 if ((ctxt->controlBufUsed == 0) && (len == 0)) {
658 return(-1);
659 }
660 ptr = &ctxt->controlBuf[ctxt->controlBufIndex];
661 end = &ctxt->controlBuf[ctxt->controlBufUsed];
662
663 #ifdef DEBUG_FTP
664 xmlGenericError(xmlGenericErrorContext,
665 "\n<<<\n%s\n--\n", ptr);
666 #endif
667 while (ptr < end) {
668 cur = xmlNanoFTPParseResponse(ptr, end - ptr);
669 if (cur > 0) {
670 /*
671 * Successfully scanned the control code, scratch
672 * till the end of the line, but keep the index to be
673 * able to analyze the result if needed.
674 */
675 res = cur;
676 ptr += 3;
677 ctxt->controlBufAnswer = ptr - ctxt->controlBuf;
678 while ((ptr < end) && (*ptr != '\n')) ptr++;
679 if (*ptr == '\n') ptr++;
680 if (*ptr == '\r') ptr++;
681 break;
682 }
683 while ((ptr < end) && (*ptr != '\n')) ptr++;
684 if (ptr >= end) {
685 ctxt->controlBufIndex = ctxt->controlBufUsed;
686 goto get_more;
687 }
688 if (*ptr != '\r') ptr++;
689 }
690
691 if (res < 0) goto get_more;
692 ctxt->controlBufIndex = ptr - ctxt->controlBuf;
693 #ifdef DEBUG_FTP
694 ptr = &ctxt->controlBuf[ctxt->controlBufIndex];
695 xmlGenericError(xmlGenericErrorContext, "\n---\n%s\n--\n", ptr);
696 #endif
697
698 #ifdef DEBUG_FTP
699 xmlGenericError(xmlGenericErrorContext, "Got %d\n", res);
700 #endif
701 return(res / 100);
702 }
703
704 /**
705 * xmlNanoFTPGetResponse:
706 * @ctx: an FTP context
707 *
708 * Get the response from the FTP server after a command.
709 * Returns the code number
710 */
711
712 int
xmlNanoFTPGetResponse(void * ctx)713 xmlNanoFTPGetResponse(void *ctx) {
714 int res;
715
716 res = xmlNanoFTPReadResponse(ctx);
717
718 return(res);
719 }
720
721 /**
722 * xmlNanoFTPCheckResponse:
723 * @ctx: an FTP context
724 *
725 * Check if there is a response from the FTP server after a command.
726 * Returns the code number, or 0
727 */
728
729 int
xmlNanoFTPCheckResponse(void * ctx)730 xmlNanoFTPCheckResponse(void *ctx) {
731 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
732 fd_set rfd;
733 struct timeval tv;
734
735 if ((ctxt == NULL) || (ctxt->controlFd == INVALID_SOCKET)) return(-1);
736 tv.tv_sec = 0;
737 tv.tv_usec = 0;
738 FD_ZERO(&rfd);
739 FD_SET(ctxt->controlFd, &rfd);
740 switch(select(ctxt->controlFd + 1, &rfd, NULL, NULL, &tv)) {
741 case 0:
742 return(0);
743 case -1:
744 __xmlIOErr(XML_FROM_FTP, 0, "select");
745 return(-1);
746
747 }
748
749 return(xmlNanoFTPReadResponse(ctx));
750 }
751
752 /**
753 * Send the user authentication
754 */
755
756 static int
xmlNanoFTPSendUser(void * ctx)757 xmlNanoFTPSendUser(void *ctx) {
758 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
759 char buf[200];
760 int len;
761 int res;
762
763 if (ctxt->user == NULL)
764 snprintf(buf, sizeof(buf), "USER anonymous\r\n");
765 else
766 snprintf(buf, sizeof(buf), "USER %s\r\n", ctxt->user);
767 buf[sizeof(buf) - 1] = 0;
768 len = strlen(buf);
769 #ifdef DEBUG_FTP
770 xmlGenericError(xmlGenericErrorContext, "%s", buf);
771 #endif
772 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
773 if (res < 0) {
774 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
775 return(res);
776 }
777 return(0);
778 }
779
780 /**
781 * Send the password authentication
782 */
783
784 static int
xmlNanoFTPSendPasswd(void * ctx)785 xmlNanoFTPSendPasswd(void *ctx) {
786 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
787 char buf[200];
788 int len;
789 int res;
790
791 if (ctxt->passwd == NULL)
792 snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
793 else
794 snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd);
795 buf[sizeof(buf) - 1] = 0;
796 len = strlen(buf);
797 #ifdef DEBUG_FTP
798 xmlGenericError(xmlGenericErrorContext, "%s", buf);
799 #endif
800 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
801 if (res < 0) {
802 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
803 return(res);
804 }
805 return(0);
806 }
807
808 /**
809 * xmlNanoFTPQuit:
810 * @ctx: an FTP context
811 *
812 * Send a QUIT command to the server
813 *
814 * Returns -1 in case of error, 0 otherwise
815 */
816
817
818 int
xmlNanoFTPQuit(void * ctx)819 xmlNanoFTPQuit(void *ctx) {
820 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
821 char buf[200];
822 int len, res;
823
824 if ((ctxt == NULL) || (ctxt->controlFd == INVALID_SOCKET)) return(-1);
825
826 snprintf(buf, sizeof(buf), "QUIT\r\n");
827 len = strlen(buf);
828 #ifdef DEBUG_FTP
829 xmlGenericError(xmlGenericErrorContext, "%s", buf); /* Just to be consistent, even though we know it can't have a % in it */
830 #endif
831 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
832 if (res < 0) {
833 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
834 return(res);
835 }
836 return(0);
837 }
838
839 /**
840 * xmlNanoFTPConnect:
841 * @ctx: an FTP context
842 *
843 * Tries to open a control connection
844 *
845 * Returns -1 in case of error, 0 otherwise
846 */
847
848 int
xmlNanoFTPConnect(void * ctx)849 xmlNanoFTPConnect(void *ctx) {
850 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
851 struct hostent *hp;
852 int port;
853 int res;
854 int addrlen = sizeof (struct sockaddr_in);
855
856 if (ctxt == NULL)
857 return(-1);
858 if (ctxt->hostname == NULL)
859 return(-1);
860
861 /*
862 * do the blocking DNS query.
863 */
864 if (proxy) {
865 port = proxyPort;
866 } else {
867 port = ctxt->port;
868 }
869 if (port == 0)
870 port = 21;
871
872 memset (&ctxt->ftpAddr, 0, sizeof(ctxt->ftpAddr));
873
874 #ifdef SUPPORT_IP6
875 if (have_ipv6 ()) {
876 struct addrinfo hints, *tmp, *result;
877
878 result = NULL;
879 memset (&hints, 0, sizeof(hints));
880 hints.ai_socktype = SOCK_STREAM;
881
882 if (proxy) {
883 if (getaddrinfo (proxy, NULL, &hints, &result) != 0) {
884 __xmlIOErr(XML_FROM_FTP, 0, "getaddrinfo failed");
885 return (-1);
886 }
887 }
888 else
889 if (getaddrinfo (ctxt->hostname, NULL, &hints, &result) != 0) {
890 __xmlIOErr(XML_FROM_FTP, 0, "getaddrinfo failed");
891 return (-1);
892 }
893
894 for (tmp = result; tmp; tmp = tmp->ai_next)
895 if (tmp->ai_family == AF_INET || tmp->ai_family == AF_INET6)
896 break;
897
898 if (!tmp) {
899 if (result)
900 freeaddrinfo (result);
901 __xmlIOErr(XML_FROM_FTP, 0, "getaddrinfo failed");
902 return (-1);
903 }
904 if ((size_t)tmp->ai_addrlen > sizeof(ctxt->ftpAddr)) {
905 if (result)
906 freeaddrinfo (result);
907 __xmlIOErr(XML_FROM_FTP, 0, "gethostbyname address mismatch");
908 return (-1);
909 }
910 if (tmp->ai_family == AF_INET6) {
911 memcpy (&ctxt->ftpAddr, tmp->ai_addr, tmp->ai_addrlen);
912 ((struct sockaddr_in6 *) &ctxt->ftpAddr)->sin6_port = htons (port);
913 ctxt->controlFd = socket (AF_INET6, SOCK_STREAM, 0);
914 }
915 else {
916 memcpy (&ctxt->ftpAddr, tmp->ai_addr, tmp->ai_addrlen);
917 ((struct sockaddr_in *) &ctxt->ftpAddr)->sin_port = htons (port);
918 ctxt->controlFd = socket (AF_INET, SOCK_STREAM, 0);
919 }
920 addrlen = tmp->ai_addrlen;
921 freeaddrinfo (result);
922 }
923 else
924 #endif
925 {
926 if (proxy)
927 hp = gethostbyname (GETHOSTBYNAME_ARG_CAST proxy);
928 else
929 hp = gethostbyname (GETHOSTBYNAME_ARG_CAST ctxt->hostname);
930 if (hp == NULL) {
931 __xmlIOErr(XML_FROM_FTP, 0, "gethostbyname failed");
932 return (-1);
933 }
934 if ((unsigned int) hp->h_length >
935 sizeof(((struct sockaddr_in *)&ctxt->ftpAddr)->sin_addr)) {
936 __xmlIOErr(XML_FROM_FTP, 0, "gethostbyname address mismatch");
937 return (-1);
938 }
939
940 /*
941 * Prepare the socket
942 */
943 ((struct sockaddr_in *)&ctxt->ftpAddr)->sin_family = AF_INET;
944 memcpy (&((struct sockaddr_in *)&ctxt->ftpAddr)->sin_addr,
945 hp->h_addr_list[0], hp->h_length);
946 ((struct sockaddr_in *)&ctxt->ftpAddr)->sin_port =
947 (unsigned short)htons ((unsigned short)port);
948 ctxt->controlFd = socket (AF_INET, SOCK_STREAM, 0);
949 addrlen = sizeof (struct sockaddr_in);
950 }
951
952 if (ctxt->controlFd == INVALID_SOCKET) {
953 __xmlIOErr(XML_FROM_FTP, 0, "socket failed");
954 return(-1);
955 }
956
957 /*
958 * Do the connect.
959 */
960 if (connect(ctxt->controlFd, (struct sockaddr *) &ctxt->ftpAddr,
961 addrlen) < 0) {
962 __xmlIOErr(XML_FROM_FTP, 0, "Failed to create a connection");
963 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
964 ctxt->controlFd = INVALID_SOCKET;
965 return(-1);
966 }
967
968 /*
969 * Wait for the HELLO from the server.
970 */
971 res = xmlNanoFTPGetResponse(ctxt);
972 if (res != 2) {
973 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
974 ctxt->controlFd = INVALID_SOCKET;
975 return(-1);
976 }
977
978 /*
979 * State diagram for the login operation on the FTP server
980 *
981 * Reference: RFC 959
982 *
983 * 1
984 * +---+ USER +---+------------->+---+
985 * | B |---------->| W | 2 ---->| E |
986 * +---+ +---+------ | -->+---+
987 * | | | | |
988 * 3 | | 4,5 | | |
989 * -------------- ----- | | |
990 * | | | | |
991 * | | | | |
992 * | --------- |
993 * | 1| | | |
994 * V | | | |
995 * +---+ PASS +---+ 2 | ------>+---+
996 * | |---------->| W |------------->| S |
997 * +---+ +---+ ---------->+---+
998 * | | | | |
999 * 3 | |4,5| | |
1000 * -------------- -------- |
1001 * | | | | |
1002 * | | | | |
1003 * | -----------
1004 * | 1,3| | | |
1005 * V | 2| | |
1006 * +---+ ACCT +---+-- | ----->+---+
1007 * | |---------->| W | 4,5 -------->| F |
1008 * +---+ +---+------------->+---+
1009 *
1010 * Of course in case of using a proxy this get really nasty and is not
1011 * standardized at all :-(
1012 */
1013 if (proxy) {
1014 int len;
1015 char buf[400];
1016
1017 if (proxyUser != NULL) {
1018 /*
1019 * We need proxy auth
1020 */
1021 snprintf(buf, sizeof(buf), "USER %s\r\n", proxyUser);
1022 buf[sizeof(buf) - 1] = 0;
1023 len = strlen(buf);
1024 #ifdef DEBUG_FTP
1025 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1026 #endif
1027 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1028 if (res < 0) {
1029 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1030 closesocket(ctxt->controlFd);
1031 ctxt->controlFd = INVALID_SOCKET;
1032 return(res);
1033 }
1034 res = xmlNanoFTPGetResponse(ctxt);
1035 switch (res) {
1036 case 2:
1037 if (proxyPasswd == NULL)
1038 break;
1039 /* Falls through. */
1040 case 3:
1041 if (proxyPasswd != NULL)
1042 snprintf(buf, sizeof(buf), "PASS %s\r\n", proxyPasswd);
1043 else
1044 snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
1045 buf[sizeof(buf) - 1] = 0;
1046 len = strlen(buf);
1047 #ifdef DEBUG_FTP
1048 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1049 #endif
1050 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1051 if (res < 0) {
1052 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1053 closesocket(ctxt->controlFd);
1054 ctxt->controlFd = INVALID_SOCKET;
1055 return(res);
1056 }
1057 res = xmlNanoFTPGetResponse(ctxt);
1058 if (res > 3) {
1059 closesocket(ctxt->controlFd);
1060 ctxt->controlFd = INVALID_SOCKET;
1061 return(-1);
1062 }
1063 break;
1064 case 1:
1065 break;
1066 case 4:
1067 case 5:
1068 case -1:
1069 default:
1070 closesocket(ctxt->controlFd);
1071 ctxt->controlFd = INVALID_SOCKET;
1072 return(-1);
1073 }
1074 }
1075
1076 /*
1077 * We assume we don't need more authentication to the proxy
1078 * and that it succeeded :-\
1079 */
1080 switch (proxyType) {
1081 case 0:
1082 /* we will try in sequence */
1083 case 1:
1084 /* Using SITE command */
1085 snprintf(buf, sizeof(buf), "SITE %s\r\n", ctxt->hostname);
1086 buf[sizeof(buf) - 1] = 0;
1087 len = strlen(buf);
1088 #ifdef DEBUG_FTP
1089 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1090 #endif
1091 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1092 if (res < 0) {
1093 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1094 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1095 ctxt->controlFd = INVALID_SOCKET;
1096 return(res);
1097 }
1098 res = xmlNanoFTPGetResponse(ctxt);
1099 if (res == 2) {
1100 /* we assume it worked :-\ 1 is error for SITE command */
1101 proxyType = 1;
1102 break;
1103 }
1104 if (proxyType == 1) {
1105 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1106 ctxt->controlFd = INVALID_SOCKET;
1107 return(-1);
1108 }
1109 /* Falls through. */
1110 case 2:
1111 /* USER user@host command */
1112 if (ctxt->user == NULL)
1113 snprintf(buf, sizeof(buf), "USER anonymous@%s\r\n",
1114 ctxt->hostname);
1115 else
1116 snprintf(buf, sizeof(buf), "USER %s@%s\r\n",
1117 ctxt->user, ctxt->hostname);
1118 buf[sizeof(buf) - 1] = 0;
1119 len = strlen(buf);
1120 #ifdef DEBUG_FTP
1121 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1122 #endif
1123 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1124 if (res < 0) {
1125 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1126 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1127 ctxt->controlFd = INVALID_SOCKET;
1128 return(res);
1129 }
1130 res = xmlNanoFTPGetResponse(ctxt);
1131 if ((res == 1) || (res == 2)) {
1132 /* we assume it worked :-\ */
1133 proxyType = 2;
1134 return(0);
1135 }
1136 if (ctxt->passwd == NULL)
1137 snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
1138 else
1139 snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd);
1140 buf[sizeof(buf) - 1] = 0;
1141 len = strlen(buf);
1142 #ifdef DEBUG_FTP
1143 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1144 #endif
1145 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1146 if (res < 0) {
1147 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1148 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1149 ctxt->controlFd = INVALID_SOCKET;
1150 return(res);
1151 }
1152 res = xmlNanoFTPGetResponse(ctxt);
1153 if ((res == 1) || (res == 2)) {
1154 /* we assume it worked :-\ */
1155 proxyType = 2;
1156 return(0);
1157 }
1158 if (proxyType == 2) {
1159 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1160 ctxt->controlFd = INVALID_SOCKET;
1161 return(-1);
1162 }
1163 /* Falls through. */
1164 case 3:
1165 /*
1166 * If you need support for other Proxy authentication scheme
1167 * send the code or at least the sequence in use.
1168 */
1169 default:
1170 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1171 ctxt->controlFd = INVALID_SOCKET;
1172 return(-1);
1173 }
1174 }
1175 /*
1176 * Non-proxy handling.
1177 */
1178 res = xmlNanoFTPSendUser(ctxt);
1179 if (res < 0) {
1180 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1181 ctxt->controlFd = INVALID_SOCKET;
1182 return(-1);
1183 }
1184 res = xmlNanoFTPGetResponse(ctxt);
1185 switch (res) {
1186 case 2:
1187 return(0);
1188 case 3:
1189 break;
1190 case 1:
1191 case 4:
1192 case 5:
1193 case -1:
1194 default:
1195 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1196 ctxt->controlFd = INVALID_SOCKET;
1197 return(-1);
1198 }
1199 res = xmlNanoFTPSendPasswd(ctxt);
1200 if (res < 0) {
1201 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1202 ctxt->controlFd = INVALID_SOCKET;
1203 return(-1);
1204 }
1205 res = xmlNanoFTPGetResponse(ctxt);
1206 switch (res) {
1207 case 2:
1208 break;
1209 case 3:
1210 __xmlIOErr(XML_FROM_FTP, XML_FTP_ACCNT,
1211 "FTP server asking for ACCNT on anonymous\n");
1212 /* Falls through. */
1213 case 1:
1214 case 4:
1215 case 5:
1216 case -1:
1217 default:
1218 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1219 ctxt->controlFd = INVALID_SOCKET;
1220 return(-1);
1221 }
1222
1223 return(0);
1224 }
1225
1226 /**
1227 * xmlNanoFTPConnectTo:
1228 * @server: an FTP server name
1229 * @port: the port (use 21 if 0)
1230 *
1231 * Tries to open a control connection to the given server/port
1232 *
1233 * Returns an fTP context or NULL if it failed
1234 */
1235
1236 void*
xmlNanoFTPConnectTo(const char * server,int port)1237 xmlNanoFTPConnectTo(const char *server, int port) {
1238 xmlNanoFTPCtxtPtr ctxt;
1239 int res;
1240
1241 xmlNanoFTPInit();
1242 if (server == NULL)
1243 return(NULL);
1244 if (port <= 0)
1245 return(NULL);
1246 ctxt = (xmlNanoFTPCtxtPtr) xmlNanoFTPNewCtxt(NULL);
1247 if (ctxt == NULL)
1248 return(NULL);
1249 ctxt->hostname = xmlMemStrdup(server);
1250 if (ctxt->hostname == NULL) {
1251 xmlNanoFTPFreeCtxt(ctxt);
1252 return(NULL);
1253 }
1254 if (port != 0)
1255 ctxt->port = port;
1256 res = xmlNanoFTPConnect(ctxt);
1257 if (res < 0) {
1258 xmlNanoFTPFreeCtxt(ctxt);
1259 return(NULL);
1260 }
1261 return(ctxt);
1262 }
1263
1264 /**
1265 * xmlNanoFTPCwd:
1266 * @ctx: an FTP context
1267 * @directory: a directory on the server
1268 *
1269 * Tries to change the remote directory
1270 *
1271 * Returns -1 incase of error, 1 if CWD worked, 0 if it failed
1272 */
1273
1274 int
xmlNanoFTPCwd(void * ctx,const char * directory)1275 xmlNanoFTPCwd(void *ctx, const char *directory) {
1276 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1277 char buf[400];
1278 int len;
1279 int res;
1280
1281 if ((ctxt == NULL) || (ctxt->controlFd == INVALID_SOCKET)) return(-1);
1282 if (directory == NULL) return 0;
1283
1284 /*
1285 * Expected response code for CWD:
1286 *
1287 * CWD
1288 * 250
1289 * 500, 501, 502, 421, 530, 550
1290 */
1291 snprintf(buf, sizeof(buf), "CWD %s\r\n", directory);
1292 buf[sizeof(buf) - 1] = 0;
1293 len = strlen(buf);
1294 #ifdef DEBUG_FTP
1295 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1296 #endif
1297 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1298 if (res < 0) {
1299 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1300 return(res);
1301 }
1302 res = xmlNanoFTPGetResponse(ctxt);
1303 if (res == 4) {
1304 return(-1);
1305 }
1306 if (res == 2) return(1);
1307 if (res == 5) {
1308 return(0);
1309 }
1310 return(0);
1311 }
1312
1313 /**
1314 * xmlNanoFTPDele:
1315 * @ctx: an FTP context
1316 * @file: a file or directory on the server
1317 *
1318 * Tries to delete an item (file or directory) from server
1319 *
1320 * Returns -1 incase of error, 1 if DELE worked, 0 if it failed
1321 */
1322
1323 int
xmlNanoFTPDele(void * ctx,const char * file)1324 xmlNanoFTPDele(void *ctx, const char *file) {
1325 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1326 char buf[400];
1327 int len;
1328 int res;
1329
1330 if ((ctxt == NULL) || (ctxt->controlFd == INVALID_SOCKET) ||
1331 (file == NULL)) return(-1);
1332
1333 /*
1334 * Expected response code for DELE:
1335 *
1336 * DELE
1337 * 250
1338 * 450, 550
1339 * 500, 501, 502, 421, 530
1340 */
1341
1342 snprintf(buf, sizeof(buf), "DELE %s\r\n", file);
1343 buf[sizeof(buf) - 1] = 0;
1344 len = strlen(buf);
1345 #ifdef DEBUG_FTP
1346 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1347 #endif
1348 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1349 if (res < 0) {
1350 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1351 return(res);
1352 }
1353 res = xmlNanoFTPGetResponse(ctxt);
1354 if (res == 4) {
1355 return(-1);
1356 }
1357 if (res == 2) return(1);
1358 if (res == 5) {
1359 return(0);
1360 }
1361 return(0);
1362 }
1363 /**
1364 * xmlNanoFTPGetConnection:
1365 * @ctx: an FTP context
1366 *
1367 * Try to open a data connection to the server. Currently only
1368 * passive mode is supported.
1369 *
1370 * Returns -1 incase of error, 0 otherwise
1371 */
1372
1373 SOCKET
xmlNanoFTPGetConnection(void * ctx)1374 xmlNanoFTPGetConnection(void *ctx) {
1375 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1376 char buf[200], *cur;
1377 int len, i;
1378 int res;
1379 unsigned char ad[6], *adp, *portp;
1380 unsigned int temp[6];
1381 #ifdef SUPPORT_IP6
1382 struct sockaddr_storage dataAddr;
1383 #else
1384 struct sockaddr_in dataAddr;
1385 #endif
1386 XML_SOCKLEN_T dataAddrLen;
1387
1388 if (ctxt == NULL) return INVALID_SOCKET;
1389
1390 memset (&dataAddr, 0, sizeof(dataAddr));
1391 #ifdef SUPPORT_IP6
1392 if ((ctxt->ftpAddr).ss_family == AF_INET6) {
1393 ctxt->dataFd = socket (AF_INET6, SOCK_STREAM, IPPROTO_TCP);
1394 ((struct sockaddr_in6 *)&dataAddr)->sin6_family = AF_INET6;
1395 dataAddrLen = sizeof(struct sockaddr_in6);
1396 } else
1397 #endif
1398 {
1399 ctxt->dataFd = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
1400 ((struct sockaddr_in *)&dataAddr)->sin_family = AF_INET;
1401 dataAddrLen = sizeof (struct sockaddr_in);
1402 }
1403
1404 if (ctxt->dataFd == INVALID_SOCKET) {
1405 __xmlIOErr(XML_FROM_FTP, 0, "socket failed");
1406 return INVALID_SOCKET;
1407 }
1408
1409 if (ctxt->passive) {
1410 #ifdef SUPPORT_IP6
1411 if ((ctxt->ftpAddr).ss_family == AF_INET6)
1412 snprintf (buf, sizeof(buf), "EPSV\r\n");
1413 else
1414 #endif
1415 snprintf (buf, sizeof(buf), "PASV\r\n");
1416 len = strlen (buf);
1417 #ifdef DEBUG_FTP
1418 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1419 #endif
1420 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1421 if (res < 0) {
1422 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1423 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1424 return INVALID_SOCKET;
1425 }
1426 res = xmlNanoFTPReadResponse(ctx);
1427 if (res != 2) {
1428 if (res == 5) {
1429 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1430 return INVALID_SOCKET;
1431 } else {
1432 /*
1433 * retry with an active connection
1434 */
1435 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1436 ctxt->passive = 0;
1437 }
1438 }
1439 cur = &ctxt->controlBuf[ctxt->controlBufAnswer];
1440 while (((*cur < '0') || (*cur > '9')) && *cur != '\0') cur++;
1441 #ifdef SUPPORT_IP6
1442 if ((ctxt->ftpAddr).ss_family == AF_INET6) {
1443 if (sscanf (cur, "%u", &temp[0]) != 1) {
1444 __xmlIOErr(XML_FROM_FTP, XML_FTP_EPSV_ANSWER,
1445 "Invalid answer to EPSV\n");
1446 if (ctxt->dataFd != INVALID_SOCKET) {
1447 closesocket (ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1448 }
1449 return INVALID_SOCKET;
1450 }
1451 memcpy (&((struct sockaddr_in6 *)&dataAddr)->sin6_addr, &((struct sockaddr_in6 *)&ctxt->ftpAddr)->sin6_addr, sizeof(struct in6_addr));
1452 ((struct sockaddr_in6 *)&dataAddr)->sin6_port = htons (temp[0]);
1453 }
1454 else
1455 #endif
1456 {
1457 if (sscanf (cur, "%u,%u,%u,%u,%u,%u", &temp[0], &temp[1], &temp[2],
1458 &temp[3], &temp[4], &temp[5]) != 6) {
1459 __xmlIOErr(XML_FROM_FTP, XML_FTP_PASV_ANSWER,
1460 "Invalid answer to PASV\n");
1461 if (ctxt->dataFd != INVALID_SOCKET) {
1462 closesocket (ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1463 }
1464 return INVALID_SOCKET;
1465 }
1466 for (i=0; i<6; i++) ad[i] = (unsigned char) (temp[i] & 0xff);
1467 memcpy (&((struct sockaddr_in *)&dataAddr)->sin_addr, &ad[0], 4);
1468 memcpy (&((struct sockaddr_in *)&dataAddr)->sin_port, &ad[4], 2);
1469 }
1470
1471 if (connect(ctxt->dataFd, (struct sockaddr *) &dataAddr, dataAddrLen) < 0) {
1472 __xmlIOErr(XML_FROM_FTP, 0, "Failed to create a data connection");
1473 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1474 return INVALID_SOCKET;
1475 }
1476 } else {
1477 getsockname(ctxt->dataFd, (struct sockaddr *) &dataAddr, &dataAddrLen);
1478 #ifdef SUPPORT_IP6
1479 if ((ctxt->ftpAddr).ss_family == AF_INET6)
1480 ((struct sockaddr_in6 *)&dataAddr)->sin6_port = 0;
1481 else
1482 #endif
1483 ((struct sockaddr_in *)&dataAddr)->sin_port = 0;
1484
1485 if (bind(ctxt->dataFd, (struct sockaddr *) &dataAddr, dataAddrLen) < 0) {
1486 __xmlIOErr(XML_FROM_FTP, 0, "bind failed");
1487 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1488 return INVALID_SOCKET;
1489 }
1490 getsockname(ctxt->dataFd, (struct sockaddr *) &dataAddr, &dataAddrLen);
1491
1492 if (listen(ctxt->dataFd, 1) < 0) {
1493 __xmlIOErr(XML_FROM_FTP, 0, "listen failed");
1494 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1495 return INVALID_SOCKET;
1496 }
1497 #ifdef SUPPORT_IP6
1498 if ((ctxt->ftpAddr).ss_family == AF_INET6) {
1499 char buf6[INET6_ADDRSTRLEN];
1500 inet_ntop (AF_INET6, &((struct sockaddr_in6 *)&dataAddr)->sin6_addr,
1501 buf6, INET6_ADDRSTRLEN);
1502 adp = (unsigned char *) buf6;
1503 portp = (unsigned char *) &((struct sockaddr_in6 *)&dataAddr)->sin6_port;
1504 snprintf (buf, sizeof(buf), "EPRT |2|%s|%s|\r\n", adp, portp);
1505 } else
1506 #endif
1507 {
1508 adp = (unsigned char *) &((struct sockaddr_in *)&dataAddr)->sin_addr;
1509 portp = (unsigned char *) &((struct sockaddr_in *)&dataAddr)->sin_port;
1510 snprintf (buf, sizeof(buf), "PORT %d,%d,%d,%d,%d,%d\r\n",
1511 adp[0] & 0xff, adp[1] & 0xff, adp[2] & 0xff, adp[3] & 0xff,
1512 portp[0] & 0xff, portp[1] & 0xff);
1513 }
1514
1515 buf[sizeof(buf) - 1] = 0;
1516 len = strlen(buf);
1517 #ifdef DEBUG_FTP
1518 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1519 #endif
1520
1521 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1522 if (res < 0) {
1523 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1524 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1525 return INVALID_SOCKET;
1526 }
1527 res = xmlNanoFTPGetResponse(ctxt);
1528 if (res != 2) {
1529 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1530 return INVALID_SOCKET;
1531 }
1532 }
1533 return(ctxt->dataFd);
1534
1535 }
1536
1537 /**
1538 * xmlNanoFTPCloseConnection:
1539 * @ctx: an FTP context
1540 *
1541 * Close the data connection from the server
1542 *
1543 * Returns -1 incase of error, 0 otherwise
1544 */
1545
1546 int
xmlNanoFTPCloseConnection(void * ctx)1547 xmlNanoFTPCloseConnection(void *ctx) {
1548 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1549 int res;
1550 fd_set rfd, efd;
1551 struct timeval tv;
1552
1553 if ((ctxt == NULL) || (ctxt->controlFd == INVALID_SOCKET)) return(-1);
1554
1555 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1556 tv.tv_sec = 15;
1557 tv.tv_usec = 0;
1558 FD_ZERO(&rfd);
1559 FD_SET(ctxt->controlFd, &rfd);
1560 FD_ZERO(&efd);
1561 FD_SET(ctxt->controlFd, &efd);
1562 res = select(ctxt->controlFd + 1, &rfd, NULL, &efd, &tv);
1563 if (res < 0) {
1564 #ifdef DEBUG_FTP
1565 perror("select");
1566 #endif
1567 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1568 return(-1);
1569 }
1570 if (res == 0) {
1571 #ifdef DEBUG_FTP
1572 xmlGenericError(xmlGenericErrorContext,
1573 "xmlNanoFTPCloseConnection: timeout\n");
1574 #endif
1575 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1576 } else {
1577 res = xmlNanoFTPGetResponse(ctxt);
1578 if (res != 2) {
1579 closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1580 return(-1);
1581 }
1582 }
1583 return(0);
1584 }
1585
1586 /**
1587 * xmlNanoFTPParseList:
1588 * @list: some data listing received from the server
1589 * @callback: the user callback
1590 * @userData: the user callback data
1591 *
1592 * Parse at most one entry from the listing.
1593 *
1594 * Returns -1 incase of error, the length of data parsed otherwise
1595 */
1596
1597 static int
xmlNanoFTPParseList(const char * list,ftpListCallback callback,void * userData)1598 xmlNanoFTPParseList(const char *list, ftpListCallback callback, void *userData) {
1599 const char *cur = list;
1600 char filename[151];
1601 char attrib[11];
1602 char owner[11];
1603 char group[11];
1604 char month[4];
1605 int year = 0;
1606 int minute = 0;
1607 int hour = 0;
1608 int day = 0;
1609 unsigned long size = 0;
1610 int links = 0;
1611 int i;
1612
1613 if (!strncmp(cur, "total", 5)) {
1614 cur += 5;
1615 while (*cur == ' ') cur++;
1616 while ((*cur >= '0') && (*cur <= '9'))
1617 links = (links * 10) + (*cur++ - '0');
1618 while ((*cur == ' ') || (*cur == '\n') || (*cur == '\r'))
1619 cur++;
1620 return(cur - list);
1621 } else if (*list == '+') {
1622 return(0);
1623 } else {
1624 while ((*cur == ' ') || (*cur == '\n') || (*cur == '\r'))
1625 cur++;
1626 if (*cur == 0) return(0);
1627 i = 0;
1628 while (*cur != ' ') {
1629 if (i < 10)
1630 attrib[i++] = *cur;
1631 cur++;
1632 if (*cur == 0) return(0);
1633 }
1634 attrib[10] = 0;
1635 while (*cur == ' ') cur++;
1636 if (*cur == 0) return(0);
1637 while ((*cur >= '0') && (*cur <= '9'))
1638 links = (links * 10) + (*cur++ - '0');
1639 while (*cur == ' ') cur++;
1640 if (*cur == 0) return(0);
1641 i = 0;
1642 while (*cur != ' ') {
1643 if (i < 10)
1644 owner[i++] = *cur;
1645 cur++;
1646 if (*cur == 0) return(0);
1647 }
1648 owner[i] = 0;
1649 while (*cur == ' ') cur++;
1650 if (*cur == 0) return(0);
1651 i = 0;
1652 while (*cur != ' ') {
1653 if (i < 10)
1654 group[i++] = *cur;
1655 cur++;
1656 if (*cur == 0) return(0);
1657 }
1658 group[i] = 0;
1659 while (*cur == ' ') cur++;
1660 if (*cur == 0) return(0);
1661 while ((*cur >= '0') && (*cur <= '9'))
1662 size = (size * 10) + (*cur++ - '0');
1663 while (*cur == ' ') cur++;
1664 if (*cur == 0) return(0);
1665 i = 0;
1666 while (*cur != ' ') {
1667 if (i < 3)
1668 month[i++] = *cur;
1669 cur++;
1670 if (*cur == 0) return(0);
1671 }
1672 month[i] = 0;
1673 while (*cur == ' ') cur++;
1674 if (*cur == 0) return(0);
1675 while ((*cur >= '0') && (*cur <= '9'))
1676 day = (day * 10) + (*cur++ - '0');
1677 while (*cur == ' ') cur++;
1678 if (*cur == 0) return(0);
1679 if ((cur[1] == 0) || (cur[2] == 0)) return(0);
1680 if ((cur[1] == ':') || (cur[2] == ':')) {
1681 while ((*cur >= '0') && (*cur <= '9'))
1682 hour = (hour * 10) + (*cur++ - '0');
1683 if (*cur == ':') cur++;
1684 while ((*cur >= '0') && (*cur <= '9'))
1685 minute = (minute * 10) + (*cur++ - '0');
1686 } else {
1687 while ((*cur >= '0') && (*cur <= '9'))
1688 year = (year * 10) + (*cur++ - '0');
1689 }
1690 while (*cur == ' ') cur++;
1691 if (*cur == 0) return(0);
1692 i = 0;
1693 while ((*cur != '\n') && (*cur != '\r')) {
1694 if (i < 150)
1695 filename[i++] = *cur;
1696 cur++;
1697 if (*cur == 0) return(0);
1698 }
1699 filename[i] = 0;
1700 if ((*cur != '\n') && (*cur != '\r'))
1701 return(0);
1702 while ((*cur == '\n') || (*cur == '\r'))
1703 cur++;
1704 }
1705 if (callback != NULL) {
1706 callback(userData, filename, attrib, owner, group, size, links,
1707 year, month, day, hour, minute);
1708 }
1709 return(cur - list);
1710 }
1711
1712 /**
1713 * xmlNanoFTPList:
1714 * @ctx: an FTP context
1715 * @callback: the user callback
1716 * @userData: the user callback data
1717 * @filename: optional files to list
1718 *
1719 * Do a listing on the server. All files info are passed back
1720 * in the callbacks.
1721 *
1722 * Returns -1 incase of error, 0 otherwise
1723 */
1724
1725 int
xmlNanoFTPList(void * ctx,ftpListCallback callback,void * userData,const char * filename)1726 xmlNanoFTPList(void *ctx, ftpListCallback callback, void *userData,
1727 const char *filename) {
1728 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1729 char buf[4096 + 1];
1730 int len, res;
1731 int indx = 0, base;
1732 fd_set rfd, efd;
1733 struct timeval tv;
1734
1735 if (ctxt == NULL) return (-1);
1736 if (filename == NULL) {
1737 if (xmlNanoFTPCwd(ctxt, ctxt->path) < 1)
1738 return(-1);
1739 ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
1740 if (ctxt->dataFd == INVALID_SOCKET)
1741 return(-1);
1742 snprintf(buf, sizeof(buf), "LIST -L\r\n");
1743 } else {
1744 if (filename[0] != '/') {
1745 if (xmlNanoFTPCwd(ctxt, ctxt->path) < 1)
1746 return(-1);
1747 }
1748 ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
1749 if (ctxt->dataFd == INVALID_SOCKET)
1750 return(-1);
1751 snprintf(buf, sizeof(buf), "LIST -L %s\r\n", filename);
1752 }
1753 buf[sizeof(buf) - 1] = 0;
1754 len = strlen(buf);
1755 #ifdef DEBUG_FTP
1756 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1757 #endif
1758 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1759 if (res < 0) {
1760 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1761 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1762 return(res);
1763 }
1764 res = xmlNanoFTPReadResponse(ctxt);
1765 if (res != 1) {
1766 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1767 return(-res);
1768 }
1769
1770 do {
1771 tv.tv_sec = 1;
1772 tv.tv_usec = 0;
1773 FD_ZERO(&rfd);
1774 FD_SET(ctxt->dataFd, &rfd);
1775 FD_ZERO(&efd);
1776 FD_SET(ctxt->dataFd, &efd);
1777 res = select(ctxt->dataFd + 1, &rfd, NULL, &efd, &tv);
1778 if (res < 0) {
1779 #ifdef DEBUG_FTP
1780 perror("select");
1781 #endif
1782 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1783 return(-1);
1784 }
1785 if (res == 0) {
1786 res = xmlNanoFTPCheckResponse(ctxt);
1787 if (res < 0) {
1788 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1789 ctxt->dataFd = INVALID_SOCKET;
1790 return(-1);
1791 }
1792 if (res == 2) {
1793 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1794 return(0);
1795 }
1796
1797 continue;
1798 }
1799
1800 if ((len = recv(ctxt->dataFd, &buf[indx], sizeof(buf) - (indx + 1), 0)) < 0) {
1801 __xmlIOErr(XML_FROM_FTP, 0, "recv");
1802 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1803 ctxt->dataFd = INVALID_SOCKET;
1804 return(-1);
1805 }
1806 #ifdef DEBUG_FTP
1807 write(1, &buf[indx], len);
1808 #endif
1809 indx += len;
1810 buf[indx] = 0;
1811 base = 0;
1812 do {
1813 res = xmlNanoFTPParseList(&buf[base], callback, userData);
1814 base += res;
1815 } while (res > 0);
1816
1817 memmove(&buf[0], &buf[base], indx - base);
1818 indx -= base;
1819 } while (len != 0);
1820 xmlNanoFTPCloseConnection(ctxt);
1821 return(0);
1822 }
1823
1824 /**
1825 * xmlNanoFTPGetSocket:
1826 * @ctx: an FTP context
1827 * @filename: the file to retrieve (or NULL if path is in context).
1828 *
1829 * Initiate fetch of the given file from the server.
1830 *
1831 * Returns the socket for the data connection, or <0 in case of error
1832 */
1833
1834
1835 SOCKET
xmlNanoFTPGetSocket(void * ctx,const char * filename)1836 xmlNanoFTPGetSocket(void *ctx, const char *filename) {
1837 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1838 char buf[300];
1839 int res, len;
1840 if (ctx == NULL)
1841 return INVALID_SOCKET;
1842 if ((filename == NULL) && (ctxt->path == NULL))
1843 return INVALID_SOCKET;
1844 ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
1845 if (ctxt->dataFd == INVALID_SOCKET)
1846 return INVALID_SOCKET;
1847
1848 snprintf(buf, sizeof(buf), "TYPE I\r\n");
1849 len = strlen(buf);
1850 #ifdef DEBUG_FTP
1851 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1852 #endif
1853 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1854 if (res < 0) {
1855 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1856 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1857 return INVALID_SOCKET;
1858 }
1859 res = xmlNanoFTPReadResponse(ctxt);
1860 if (res != 2) {
1861 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1862 return INVALID_SOCKET;
1863 }
1864 if (filename == NULL)
1865 snprintf(buf, sizeof(buf), "RETR %s\r\n", ctxt->path);
1866 else
1867 snprintf(buf, sizeof(buf), "RETR %s\r\n", filename);
1868 buf[sizeof(buf) - 1] = 0;
1869 len = strlen(buf);
1870 #ifdef DEBUG_FTP
1871 xmlGenericError(xmlGenericErrorContext, "%s", buf);
1872 #endif
1873 res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1874 if (res < 0) {
1875 __xmlIOErr(XML_FROM_FTP, 0, "send failed");
1876 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1877 return INVALID_SOCKET;
1878 }
1879 res = xmlNanoFTPReadResponse(ctxt);
1880 if (res != 1) {
1881 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1882 return INVALID_SOCKET;
1883 }
1884 return(ctxt->dataFd);
1885 }
1886
1887 /**
1888 * xmlNanoFTPGet:
1889 * @ctx: an FTP context
1890 * @callback: the user callback
1891 * @userData: the user callback data
1892 * @filename: the file to retrieve
1893 *
1894 * Fetch the given file from the server. All data are passed back
1895 * in the callbacks. The last callback has a size of 0 block.
1896 *
1897 * Returns -1 incase of error, 0 otherwise
1898 */
1899
1900 int
xmlNanoFTPGet(void * ctx,ftpDataCallback callback,void * userData,const char * filename)1901 xmlNanoFTPGet(void *ctx, ftpDataCallback callback, void *userData,
1902 const char *filename) {
1903 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1904 char buf[4096];
1905 int len = 0, res;
1906 fd_set rfd;
1907 struct timeval tv;
1908
1909 if (ctxt == NULL) return(-1);
1910 if ((filename == NULL) && (ctxt->path == NULL))
1911 return(-1);
1912 if (callback == NULL)
1913 return(-1);
1914 if (xmlNanoFTPGetSocket(ctxt, filename) == INVALID_SOCKET)
1915 return(-1);
1916
1917 do {
1918 tv.tv_sec = 1;
1919 tv.tv_usec = 0;
1920 FD_ZERO(&rfd);
1921 FD_SET(ctxt->dataFd, &rfd);
1922 res = select(ctxt->dataFd + 1, &rfd, NULL, NULL, &tv);
1923 if (res < 0) {
1924 #ifdef DEBUG_FTP
1925 perror("select");
1926 #endif
1927 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1928 return(-1);
1929 }
1930 if (res == 0) {
1931 res = xmlNanoFTPCheckResponse(ctxt);
1932 if (res < 0) {
1933 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1934 ctxt->dataFd = INVALID_SOCKET;
1935 return(-1);
1936 }
1937 if (res == 2) {
1938 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1939 return(0);
1940 }
1941
1942 continue;
1943 }
1944 if ((len = recv(ctxt->dataFd, buf, sizeof(buf), 0)) < 0) {
1945 __xmlIOErr(XML_FROM_FTP, 0, "recv failed");
1946 callback(userData, buf, len);
1947 closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1948 return(-1);
1949 }
1950 callback(userData, buf, len);
1951 } while (len != 0);
1952
1953 return(xmlNanoFTPCloseConnection(ctxt));
1954 }
1955
1956 /**
1957 * xmlNanoFTPRead:
1958 * @ctx: the FTP context
1959 * @dest: a buffer
1960 * @len: the buffer length
1961 *
1962 * This function tries to read @len bytes from the existing FTP connection
1963 * and saves them in @dest. This is a blocking call.
1964 *
1965 * Returns the number of byte read. 0 is an indication of an end of connection.
1966 * -1 indicates a parameter error.
1967 */
1968 int
xmlNanoFTPRead(void * ctx,void * dest,int len)1969 xmlNanoFTPRead(void *ctx, void *dest, int len) {
1970 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1971
1972 if (ctx == NULL) return(-1);
1973 if (ctxt->dataFd == INVALID_SOCKET) return(0);
1974 if (dest == NULL) return(-1);
1975 if (len <= 0) return(0);
1976
1977 len = recv(ctxt->dataFd, dest, len, 0);
1978 if (len <= 0) {
1979 if (len < 0)
1980 __xmlIOErr(XML_FROM_FTP, 0, "recv failed");
1981 xmlNanoFTPCloseConnection(ctxt);
1982 }
1983 #ifdef DEBUG_FTP
1984 xmlGenericError(xmlGenericErrorContext, "Recvd %d bytes\n", len);
1985 #endif
1986 return(len);
1987 }
1988
1989 /**
1990 * xmlNanoFTPOpen:
1991 * @URL: the URL to the resource
1992 *
1993 * Start to fetch the given ftp:// resource
1994 *
1995 * Returns an FTP context, or NULL
1996 */
1997
1998 void*
xmlNanoFTPOpen(const char * URL)1999 xmlNanoFTPOpen(const char *URL) {
2000 xmlNanoFTPCtxtPtr ctxt;
2001 SOCKET sock;
2002
2003 xmlNanoFTPInit();
2004 if (URL == NULL) return(NULL);
2005 if (strncmp("ftp://", URL, 6)) return(NULL);
2006
2007 ctxt = (xmlNanoFTPCtxtPtr) xmlNanoFTPNewCtxt(URL);
2008 if (ctxt == NULL) return(NULL);
2009 if (xmlNanoFTPConnect(ctxt) < 0) {
2010 xmlNanoFTPFreeCtxt(ctxt);
2011 return(NULL);
2012 }
2013 sock = xmlNanoFTPGetSocket(ctxt, ctxt->path);
2014 if (sock == INVALID_SOCKET) {
2015 xmlNanoFTPFreeCtxt(ctxt);
2016 return(NULL);
2017 }
2018 return(ctxt);
2019 }
2020
2021 /**
2022 * xmlNanoFTPClose:
2023 * @ctx: an FTP context
2024 *
2025 * Close the connection and both control and transport
2026 *
2027 * Returns -1 incase of error, 0 otherwise
2028 */
2029
2030 int
xmlNanoFTPClose(void * ctx)2031 xmlNanoFTPClose(void *ctx) {
2032 xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
2033
2034 if (ctxt == NULL)
2035 return(-1);
2036
2037 if (ctxt->dataFd != INVALID_SOCKET) {
2038 closesocket(ctxt->dataFd);
2039 ctxt->dataFd = INVALID_SOCKET;
2040 }
2041 if (ctxt->controlFd != INVALID_SOCKET) {
2042 xmlNanoFTPQuit(ctxt);
2043 closesocket(ctxt->controlFd);
2044 ctxt->controlFd = INVALID_SOCKET;
2045 }
2046 xmlNanoFTPFreeCtxt(ctxt);
2047 return(0);
2048 }
2049
2050 #ifdef STANDALONE
2051 /************************************************************************
2052 * *
2053 * Basic test in Standalone mode *
2054 * *
2055 ************************************************************************/
2056 static
ftpList(void * userData,const char * filename,const char * attrib,const char * owner,const char * group,unsigned long size,int links,int year,const char * month,int day,int hour,int minute)2057 void ftpList(void *userData, const char *filename, const char* attrib,
2058 const char *owner, const char *group, unsigned long size, int links,
2059 int year, const char *month, int day, int hour, int minute) {
2060 xmlGenericError(xmlGenericErrorContext,
2061 "%s %s %s %ld %s\n", attrib, owner, group, size, filename);
2062 }
2063 static
ftpData(void * userData,const char * data,int len)2064 void ftpData(void *userData, const char *data, int len) {
2065 if (userData == NULL) return;
2066 if (len <= 0) {
2067 fclose((FILE*)userData);
2068 return;
2069 }
2070 fwrite(data, len, 1, (FILE*)userData);
2071 }
2072
main(int argc,char ** argv)2073 int main(int argc, char **argv) {
2074 void *ctxt;
2075 FILE *output;
2076 char *tstfile = NULL;
2077
2078 xmlNanoFTPInit();
2079 if (argc > 1) {
2080 ctxt = xmlNanoFTPNewCtxt(argv[1]);
2081 if (xmlNanoFTPConnect(ctxt) < 0) {
2082 xmlGenericError(xmlGenericErrorContext,
2083 "Couldn't connect to %s\n", argv[1]);
2084 exit(1);
2085 }
2086 if (argc > 2)
2087 tstfile = argv[2];
2088 } else
2089 ctxt = xmlNanoFTPConnectTo("localhost", 0);
2090 if (ctxt == NULL) {
2091 xmlGenericError(xmlGenericErrorContext,
2092 "Couldn't connect to localhost\n");
2093 exit(1);
2094 }
2095 xmlNanoFTPList(ctxt, ftpList, NULL, tstfile);
2096 output = fopen("/tmp/tstdata", "w");
2097 if (output != NULL) {
2098 if (xmlNanoFTPGet(ctxt, ftpData, (void *) output, tstfile) < 0)
2099 xmlGenericError(xmlGenericErrorContext,
2100 "Failed to get file\n");
2101
2102 }
2103 xmlNanoFTPClose(ctxt);
2104 xmlMemoryDump();
2105 exit(0);
2106 }
2107 #endif /* STANDALONE */
2108 #else /* !LIBXML_FTP_ENABLED */
2109 #ifdef STANDALONE
2110 #include <stdio.h>
main(int argc,char ** argv)2111 int main(int argc, char **argv) {
2112 xmlGenericError(xmlGenericErrorContext,
2113 "%s : FTP support not compiled in\n", argv[0]);
2114 return(0);
2115 }
2116 #endif /* STANDALONE */
2117 #endif /* LIBXML_FTP_ENABLED */
2118 #define bottom_nanoftp
2119 #include "elfgcchack.h"
2120