nanoftp.c@ 64246

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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_SYS_SOCKET_H
56	#include <sys/socket.h>
57	#endif
58	#ifdef HAVE_SYS_TYPES_H
59	#include <sys/types.h>
60	#endif
61	#ifdef HAVE_STRINGS_H
62	#include <strings.h>
63	#endif
64
65	#include <libxml/xmlmemory.h>
66	#include <libxml/parser.h>
67	#include <libxml/xmlerror.h>
68	#include <libxml/uri.h>
69	#include <libxml/nanoftp.h>
70	#include <libxml/globals.h>
71
72	/* #define DEBUG_FTP 1 */
73	#ifdef STANDALONE
74	#ifndef DEBUG_FTP
75	#define DEBUG_FTP 1
76	#endif
77	#endif
78
79
80	#if defined(__MINGW32__) \|\| defined(_WIN32_WCE)
81	#ifndef _WINSOCKAPI_
82	#define _WINSOCKAPI_
83	#endif
84	#include <wsockcompat.h>
85	#include <winsock2.h>
86	#undef XML_SOCKLEN_T
87	#define XML_SOCKLEN_T unsigned int
88	#endif
89
90	/**
91	* A couple portability macros
92	*/
93	#ifndef _WINSOCKAPI_
94	#if !defined(__BEOS__) \|\| defined(__HAIKU__)
95	#define closesocket(s) close(s)
96	#endif
97	#endif
98
99	#ifdef __BEOS__
100	#ifndef PF_INET
101	#define PF_INET AF_INET
102	#endif
103	#endif
104
105	#ifdef _AIX
106	#ifdef HAVE_BROKEN_SS_FAMILY
107	#define ss_family __ss_family
108	#endif
109	#endif
110
111	#ifndef XML_SOCKLEN_T
112	#define XML_SOCKLEN_T unsigned int
113	#endif
114
115	#define FTP_COMMAND_OK 200
116	#define FTP_SYNTAX_ERROR 500
117	#define FTP_GET_PASSWD 331
118	#define FTP_BUF_SIZE 1024
119
120	#define XML_NANO_MAX_URLBUF 4096
121
122	typedef struct xmlNanoFTPCtxt {
123	char protocol; / the protocol name */
124	char hostname; / the host name */
125	int port; /* the port */
126	char path; / the path within the URL */
127	char user; / user string */
128	char passwd; / passwd string */
129	#ifdef SUPPORT_IP6
130	struct sockaddr_storage ftpAddr; /* this is large enough to hold IPv6 address*/
131	#else
132	struct sockaddr_in ftpAddr; /* the socket address struct */
133	#endif
134	int passive; /* currently we support only passive !!! */
135	SOCKET controlFd; /* the file descriptor for the control socket */
136	SOCKET dataFd; /* the file descriptor for the data socket */
137	int state; /* WRITE / READ / CLOSED */
138	int returnValue; /* the protocol return value */
139	/* buffer for data received from the control connection */
140	char controlBuf[FTP_BUF_SIZE + 1];
141	int controlBufIndex;
142	int controlBufUsed;
143	int controlBufAnswer;
144	} xmlNanoFTPCtxt, *xmlNanoFTPCtxtPtr;
145
146	static int initialized = 0;
147	static char proxy = NULL; / the proxy name if any */
148	static int proxyPort = 0; /* the proxy port if any */
149	static char proxyUser = NULL; / user for proxy authentication */
150	static char proxyPasswd = NULL;/ passwd for proxy authentication */
151	static int proxyType = 0; /* uses TYPE or a@b ? */
152
153	#ifdef SUPPORT_IP6
154	static
155	int have_ipv6(void) {
156	int s;
157
158	s = socket (AF_INET6, SOCK_STREAM, 0);
159	if (s != -1) {
160	close (s);
161	return (1);
162	}
163	return (0);
164	}
165	#endif
166
167	/**
168	* xmlFTPErrMemory:
169	* @extra: extra informations
170	*
171	* Handle an out of memory condition
172	*/
173	static void
174	xmlFTPErrMemory(const char *extra)
175	{
176	__xmlSimpleError(XML_FROM_FTP, XML_ERR_NO_MEMORY, NULL, NULL, extra);
177	}
178
179	/**
180	* xmlNanoFTPInit:
181	*
182	* Initialize the FTP protocol layer.
183	* Currently it just checks for proxy informations,
184	* and get the hostname
185	*/
186
187	void
188	xmlNanoFTPInit(void) {
189	const char *env;
190	#ifdef _WINSOCKAPI_
191	WSADATA wsaData;
192	#endif
193
194	if (initialized)
195	return;
196
197	#ifdef _WINSOCKAPI_
198	if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0)
199	return;
200	#endif
201
202	proxyPort = 21;
203	env = getenv("no_proxy");
204	if (env && ((env[0] == '*' ) && (env[1] == 0)))
205	return;
206	env = getenv("ftp_proxy");
207	if (env != NULL) {
208	xmlNanoFTPScanProxy(env);
209	} else {
210	env = getenv("FTP_PROXY");
211	if (env != NULL) {
212	xmlNanoFTPScanProxy(env);
213	}
214	}
215	env = getenv("ftp_proxy_user");
216	if (env != NULL) {
217	proxyUser = xmlMemStrdup(env);
218	}
219	env = getenv("ftp_proxy_password");
220	if (env != NULL) {
221	proxyPasswd = xmlMemStrdup(env);
222	}
223	initialized = 1;
224	}
225
226	/**
227	* xmlNanoFTPCleanup:
228	*
229	* Cleanup the FTP protocol layer. This cleanup proxy informations.
230	*/
231
232	void
233	xmlNanoFTPCleanup(void) {
234	if (proxy != NULL) {
235	xmlFree(proxy);
236	proxy = NULL;
237	}
238	if (proxyUser != NULL) {
239	xmlFree(proxyUser);
240	proxyUser = NULL;
241	}
242	if (proxyPasswd != NULL) {
243	xmlFree(proxyPasswd);
244	proxyPasswd = NULL;
245	}
246	#ifdef _WINSOCKAPI_
247	if (initialized)
248	WSACleanup();
249	#endif
250	initialized = 0;
251	}
252
253	/**
254	* xmlNanoFTPProxy:
255	* @host: the proxy host name
256	* @port: the proxy port
257	* @user: the proxy user name
258	* @passwd: the proxy password
259	* @type: the type of proxy 1 for using SITE, 2 for USER a@b
260	*
261	* Setup the FTP proxy informations.
262	* This can also be done by using ftp_proxy ftp_proxy_user and
263	* ftp_proxy_password environment variables.
264	*/
265
266	void
267	xmlNanoFTPProxy(const char host, int port, const char user,
268	const char *passwd, int type) {
269	if (proxy != NULL) {
270	xmlFree(proxy);
271	proxy = NULL;
272	}
273	if (proxyUser != NULL) {
274	xmlFree(proxyUser);
275	proxyUser = NULL;
276	}
277	if (proxyPasswd != NULL) {
278	xmlFree(proxyPasswd);
279	proxyPasswd = NULL;
280	}
281	if (host)
282	proxy = xmlMemStrdup(host);
283	if (user)
284	proxyUser = xmlMemStrdup(user);
285	if (passwd)
286	proxyPasswd = xmlMemStrdup(passwd);
287	proxyPort = port;
288	proxyType = type;
289	}
290
291	/**
292	* xmlNanoFTPScanURL:
293	* @ctx: an FTP context
294	* @URL: The URL used to initialize the context
295	*
296	* (Re)Initialize an FTP context by parsing the URL and finding
297	* the protocol host port and path it indicates.
298	*/
299
300	static void
301	xmlNanoFTPScanURL(void ctx, const char URL) {
302	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
303	xmlURIPtr uri;
304
305	/*
306	* Clear any existing data from the context
307	*/
308	if (ctxt->protocol != NULL) {
309	xmlFree(ctxt->protocol);
310	ctxt->protocol = NULL;
311	}
312	if (ctxt->hostname != NULL) {
313	xmlFree(ctxt->hostname);
314	ctxt->hostname = NULL;
315	}
316	if (ctxt->path != NULL) {
317	xmlFree(ctxt->path);
318	ctxt->path = NULL;
319	}
320	if (URL == NULL) return;
321
322	uri = xmlParseURIRaw(URL, 1);
323	if (uri == NULL)
324	return;
325
326	if ((uri->scheme == NULL) \|\| (uri->server == NULL)) {
327	xmlFreeURI(uri);
328	return;
329	}
330
331	ctxt->protocol = xmlMemStrdup(uri->scheme);
332	ctxt->hostname = xmlMemStrdup(uri->server);
333	if (uri->path != NULL)
334	ctxt->path = xmlMemStrdup(uri->path);
335	else
336	ctxt->path = xmlMemStrdup("/");
337	if (uri->port != 0)
338	ctxt->port = uri->port;
339
340	if (uri->user != NULL) {
341	char *cptr;
342	if ((cptr=strchr(uri->user, ':')) == NULL)
343	ctxt->user = xmlMemStrdup(uri->user);
344	else {
345	ctxt->user = (char )xmlStrndup((xmlChar )uri->user,
346	(cptr - uri->user));
347	ctxt->passwd = xmlMemStrdup(cptr+1);
348	}
349	}
350
351	xmlFreeURI(uri);
352
353	}
354
355	/**
356	* xmlNanoFTPUpdateURL:
357	* @ctx: an FTP context
358	* @URL: The URL used to update the context
359	*
360	* Update an FTP context by parsing the URL and finding
361	* new path it indicates. If there is an error in the
362	* protocol, hostname, port or other information, the
363	* error is raised. It indicates a new connection has to
364	* be established.
365	*
366	* Returns 0 if Ok, -1 in case of error (other host).
367	*/
368
369	int
370	xmlNanoFTPUpdateURL(void ctx, const char URL) {
371	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
372	xmlURIPtr uri;
373
374	if (URL == NULL)
375	return(-1);
376	if (ctxt == NULL)
377	return(-1);
378	if (ctxt->protocol == NULL)
379	return(-1);
380	if (ctxt->hostname == NULL)
381	return(-1);
382
383	uri = xmlParseURIRaw(URL, 1);
384	if (uri == NULL)
385	return(-1);
386
387	if ((uri->scheme == NULL) \|\| (uri->server == NULL)) {
388	xmlFreeURI(uri);
389	return(-1);
390	}
391	if ((strcmp(ctxt->protocol, uri->scheme)) \|\|
392	(strcmp(ctxt->hostname, uri->server)) \|\|
393	((uri->port != 0) && (ctxt->port != uri->port))) {
394	xmlFreeURI(uri);
395	return(-1);
396	}
397
398	if (uri->port != 0)
399	ctxt->port = uri->port;
400
401	if (ctxt->path != NULL) {
402	xmlFree(ctxt->path);
403	ctxt->path = NULL;
404	}
405
406	if (uri->path == NULL)
407	ctxt->path = xmlMemStrdup("/");
408	else
409	ctxt->path = xmlMemStrdup(uri->path);
410
411	xmlFreeURI(uri);
412
413	return(0);
414	}
415
416	/**
417	* xmlNanoFTPScanProxy:
418	* @URL: The proxy URL used to initialize the proxy context
419	*
420	* (Re)Initialize the FTP Proxy context by parsing the URL and finding
421	* the protocol host port it indicates.
422	* Should be like ftp://myproxy/ or ftp://myproxy:3128/
423	* A NULL URL cleans up proxy informations.
424	*/
425
426	void
427	xmlNanoFTPScanProxy(const char *URL) {
428	xmlURIPtr uri;
429
430	if (proxy != NULL) {
431	xmlFree(proxy);
432	proxy = NULL;
433	}
434	proxyPort = 0;
435
436	#ifdef DEBUG_FTP
437	if (URL == NULL)
438	xmlGenericError(xmlGenericErrorContext,
439	"Removing FTP proxy info\n");
440	else
441	xmlGenericError(xmlGenericErrorContext,
442	"Using FTP proxy %s\n", URL);
443	#endif
444	if (URL == NULL) return;
445
446	uri = xmlParseURIRaw(URL, 1);
447	if ((uri == NULL) \|\| (uri->scheme == NULL) \|\|
448	(strcmp(uri->scheme, "ftp")) \|\| (uri->server == NULL)) {
449	__xmlIOErr(XML_FROM_FTP, XML_FTP_URL_SYNTAX, "Syntax Error\n");
450	if (uri != NULL)
451	xmlFreeURI(uri);
452	return;
453	}
454
455	proxy = xmlMemStrdup(uri->server);
456	if (uri->port != 0)
457	proxyPort = uri->port;
458
459	xmlFreeURI(uri);
460	}
461
462	/**
463	* xmlNanoFTPNewCtxt:
464	* @URL: The URL used to initialize the context
465	*
466	* Allocate and initialize a new FTP context.
467	*
468	* Returns an FTP context or NULL in case of error.
469	*/
470
471	void*
472	xmlNanoFTPNewCtxt(const char *URL) {
473	xmlNanoFTPCtxtPtr ret;
474	char *unescaped;
475
476	ret = (xmlNanoFTPCtxtPtr) xmlMalloc(sizeof(xmlNanoFTPCtxt));
477	if (ret == NULL) {
478	xmlFTPErrMemory("allocating FTP context");
479	return(NULL);
480	}
481
482	memset(ret, 0, sizeof(xmlNanoFTPCtxt));
483	ret->port = 21;
484	ret->passive = 1;
485	ret->returnValue = 0;
486	ret->controlBufIndex = 0;
487	ret->controlBufUsed = 0;
488	ret->controlFd = INVALID_SOCKET;
489
490	unescaped = xmlURIUnescapeString(URL, 0, NULL);
491	if (unescaped != NULL) {
492	xmlNanoFTPScanURL(ret, unescaped);
493	xmlFree(unescaped);
494	} else if (URL != NULL)
495	xmlNanoFTPScanURL(ret, URL);
496
497	return(ret);
498	}
499
500	/**
501	* xmlNanoFTPFreeCtxt:
502	* @ctx: an FTP context
503	*
504	* Frees the context after closing the connection.
505	*/
506
507	void
508	xmlNanoFTPFreeCtxt(void * ctx) {
509	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
510	if (ctxt == NULL) return;
511	if (ctxt->hostname != NULL) xmlFree(ctxt->hostname);
512	if (ctxt->protocol != NULL) xmlFree(ctxt->protocol);
513	if (ctxt->path != NULL) xmlFree(ctxt->path);
514	ctxt->passive = 1;
515	if (ctxt->controlFd != INVALID_SOCKET) closesocket(ctxt->controlFd);
516	ctxt->controlFd = INVALID_SOCKET;
517	ctxt->controlBufIndex = -1;
518	ctxt->controlBufUsed = -1;
519	xmlFree(ctxt);
520	}
521
522	/**
523	* xmlNanoFTPParseResponse:
524	* @buf: the buffer containing the response
525	* @len: the buffer length
526	*
527	* Parsing of the server answer, we just extract the code.
528	*
529	* returns 0 for errors
530	* +XXX for last line of response
531	* -XXX for response to be continued
532	*/
533	static int
534	xmlNanoFTPParseResponse(char *buf, int len) {
535	int val = 0;
536
537	if (len < 3) return(-1);
538	if ((buf >= '0') && (buf <= '9'))
539	val = val * 10 + (*buf - '0');
540	else
541	return(0);
542	buf++;
543	if ((buf >= '0') && (buf <= '9'))
544	val = val * 10 + (*buf - '0');
545	else
546	return(0);
547	buf++;
548	if ((buf >= '0') && (buf <= '9'))
549	val = val * 10 + (*buf - '0');
550	else
551	return(0);
552	buf++;
553	if (*buf == '-')
554	return(-val);
555	return(val);
556	}
557
558	/**
559	* xmlNanoFTPGetMore:
560	* @ctx: an FTP context
561	*
562	* Read more information from the FTP control connection
563	* Returns the number of bytes read, < 0 indicates an error
564	*/
565	static int
566	xmlNanoFTPGetMore(void *ctx) {
567	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
568	int len;
569	int size;
570
571	if ((ctxt == NULL) \|\| (ctxt->controlFd == INVALID_SOCKET)) return(-1);
572
573	if ((ctxt->controlBufIndex < 0) \|\| (ctxt->controlBufIndex > FTP_BUF_SIZE)) {
574	#ifdef DEBUG_FTP
575	xmlGenericError(xmlGenericErrorContext,
576	"xmlNanoFTPGetMore : controlBufIndex = %d\n",
577	ctxt->controlBufIndex);
578	#endif
579	return(-1);
580	}
581
582	if ((ctxt->controlBufUsed < 0) \|\| (ctxt->controlBufUsed > FTP_BUF_SIZE)) {
583	#ifdef DEBUG_FTP
584	xmlGenericError(xmlGenericErrorContext,
585	"xmlNanoFTPGetMore : controlBufUsed = %d\n",
586	ctxt->controlBufUsed);
587	#endif
588	return(-1);
589	}
590	if (ctxt->controlBufIndex > ctxt->controlBufUsed) {
591	#ifdef DEBUG_FTP
592	xmlGenericError(xmlGenericErrorContext,
593	"xmlNanoFTPGetMore : controlBufIndex > controlBufUsed %d > %d\n",
594	ctxt->controlBufIndex, ctxt->controlBufUsed);
595	#endif
596	return(-1);
597	}
598
599	/*
600	* First pack the control buffer
601	*/
602	if (ctxt->controlBufIndex > 0) {
603	memmove(&ctxt->controlBuf[0], &ctxt->controlBuf[ctxt->controlBufIndex],
604	ctxt->controlBufUsed - ctxt->controlBufIndex);
605	ctxt->controlBufUsed -= ctxt->controlBufIndex;
606	ctxt->controlBufIndex = 0;
607	}
608	size = FTP_BUF_SIZE - ctxt->controlBufUsed;
609	if (size == 0) {
610	#ifdef DEBUG_FTP
611	xmlGenericError(xmlGenericErrorContext,
612	"xmlNanoFTPGetMore : buffer full %d \n", ctxt->controlBufUsed);
613	#endif
614	return(0);
615	}
616
617	/*
618	* Read the amount left on the control connection
619	*/
620	if ((len = recv(ctxt->controlFd, &ctxt->controlBuf[ctxt->controlBufIndex],
621	size, 0)) < 0) {
622	__xmlIOErr(XML_FROM_FTP, 0, "recv failed");
623	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
624	ctxt->controlFd = INVALID_SOCKET;
625	return(-1);
626	}
627	#ifdef DEBUG_FTP
628	xmlGenericError(xmlGenericErrorContext,
629	"xmlNanoFTPGetMore : read %d [%d - %d]\n", len,
630	ctxt->controlBufUsed, ctxt->controlBufUsed + len);
631	#endif
632	ctxt->controlBufUsed += len;
633	ctxt->controlBuf[ctxt->controlBufUsed] = 0;
634
635	return(len);
636	}
637
638	/**
639	* xmlNanoFTPReadResponse:
640	* @ctx: an FTP context
641	*
642	* Read the response from the FTP server after a command.
643	* Returns the code number
644	*/
645	static int
646	xmlNanoFTPReadResponse(void *ctx) {
647	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
648	char ptr, end;
649	int len;
650	int res = -1, cur = -1;
651
652	if ((ctxt == NULL) \|\| (ctxt->controlFd == INVALID_SOCKET)) return(-1);
653
654	get_more:
655	/*
656	* Assumes everything up to controlBuf[controlBufIndex] has been read
657	* and analyzed.
658	*/
659	len = xmlNanoFTPGetMore(ctx);
660	if (len < 0) {
661	return(-1);
662	}
663	if ((ctxt->controlBufUsed == 0) && (len == 0)) {
664	return(-1);
665	}
666	ptr = &ctxt->controlBuf[ctxt->controlBufIndex];
667	end = &ctxt->controlBuf[ctxt->controlBufUsed];
668
669	#ifdef DEBUG_FTP
670	xmlGenericError(xmlGenericErrorContext,
671	"\n<<<\n%s\n--\n", ptr);
672	#endif
673	while (ptr < end) {
674	cur = xmlNanoFTPParseResponse(ptr, end - ptr);
675	if (cur > 0) {
676	/*
677	* Successfully scanned the control code, scratch
678	* till the end of the line, but keep the index to be
679	* able to analyze the result if needed.
680	*/
681	res = cur;
682	ptr += 3;
683	ctxt->controlBufAnswer = ptr - ctxt->controlBuf;
684	while ((ptr < end) && (*ptr != '\n')) ptr++;
685	if (*ptr == '\n') ptr++;
686	if (*ptr == '\r') ptr++;
687	break;
688	}
689	while ((ptr < end) && (*ptr != '\n')) ptr++;
690	if (ptr >= end) {
691	ctxt->controlBufIndex = ctxt->controlBufUsed;
692	goto get_more;
693	}
694	if (*ptr != '\r') ptr++;
695	}
696
697	if (res < 0) goto get_more;
698	ctxt->controlBufIndex = ptr - ctxt->controlBuf;
699	#ifdef DEBUG_FTP
700	ptr = &ctxt->controlBuf[ctxt->controlBufIndex];
701	xmlGenericError(xmlGenericErrorContext, "\n---\n%s\n--\n", ptr);
702	#endif
703
704	#ifdef DEBUG_FTP
705	xmlGenericError(xmlGenericErrorContext, "Got %d\n", res);
706	#endif
707	return(res / 100);
708	}
709
710	/**
711	* xmlNanoFTPGetResponse:
712	* @ctx: an FTP context
713	*
714	* Get the response from the FTP server after a command.
715	* Returns the code number
716	*/
717
718	int
719	xmlNanoFTPGetResponse(void *ctx) {
720	int res;
721
722	res = xmlNanoFTPReadResponse(ctx);
723
724	return(res);
725	}
726
727	/**
728	* xmlNanoFTPCheckResponse:
729	* @ctx: an FTP context
730	*
731	* Check if there is a response from the FTP server after a command.
732	* Returns the code number, or 0
733	*/
734
735	int
736	xmlNanoFTPCheckResponse(void *ctx) {
737	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
738	fd_set rfd;
739	struct timeval tv;
740
741	if ((ctxt == NULL) \|\| (ctxt->controlFd == INVALID_SOCKET)) return(-1);
742	tv.tv_sec = 0;
743	tv.tv_usec = 0;
744	FD_ZERO(&rfd);
745	FD_SET(ctxt->controlFd, &rfd);
746	switch(select(ctxt->controlFd + 1, &rfd, NULL, NULL, &tv)) {
747	case 0:
748	return(0);
749	case -1:
750	__xmlIOErr(XML_FROM_FTP, 0, "select");
751	return(-1);
752
753	}
754
755	return(xmlNanoFTPReadResponse(ctx));
756	}
757
758	/**
759	* Send the user authentication
760	*/
761
762	static int
763	xmlNanoFTPSendUser(void *ctx) {
764	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
765	char buf[200];
766	int len;
767	int res;
768
769	if (ctxt->user == NULL)
770	snprintf(buf, sizeof(buf), "USER anonymous\r\n");
771	else
772	snprintf(buf, sizeof(buf), "USER %s\r\n", ctxt->user);
773	buf[sizeof(buf) - 1] = 0;
774	len = strlen(buf);
775	#ifdef DEBUG_FTP
776	xmlGenericError(xmlGenericErrorContext, "%s", buf);
777	#endif
778	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
779	if (res < 0) {
780	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
781	return(res);
782	}
783	return(0);
784	}
785
786	/**
787	* Send the password authentication
788	*/
789
790	static int
791	xmlNanoFTPSendPasswd(void *ctx) {
792	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
793	char buf[200];
794	int len;
795	int res;
796
797	if (ctxt->passwd == NULL)
798	snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
799	else
800	snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd);
801	buf[sizeof(buf) - 1] = 0;
802	len = strlen(buf);
803	#ifdef DEBUG_FTP
804	xmlGenericError(xmlGenericErrorContext, "%s", buf);
805	#endif
806	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
807	if (res < 0) {
808	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
809	return(res);
810	}
811	return(0);
812	}
813
814	/**
815	* xmlNanoFTPQuit:
816	* @ctx: an FTP context
817	*
818	* Send a QUIT command to the server
819	*
820	* Returns -1 in case of error, 0 otherwise
821	*/
822
823
824	int
825	xmlNanoFTPQuit(void *ctx) {
826	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
827	char buf[200];
828	int len, res;
829
830	if ((ctxt == NULL) \|\| (ctxt->controlFd == INVALID_SOCKET)) return(-1);
831
832	snprintf(buf, sizeof(buf), "QUIT\r\n");
833	len = strlen(buf);
834	#ifdef DEBUG_FTP
835	xmlGenericError(xmlGenericErrorContext, "%s", buf); /* Just to be consistent, even though we know it can't have a % in it */
836	#endif
837	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
838	if (res < 0) {
839	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
840	return(res);
841	}
842	return(0);
843	}
844
845	/**
846	* xmlNanoFTPConnect:
847	* @ctx: an FTP context
848	*
849	* Tries to open a control connection
850	*
851	* Returns -1 in case of error, 0 otherwise
852	*/
853
854	int
855	xmlNanoFTPConnect(void *ctx) {
856	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
857	struct hostent *hp;
858	int port;
859	int res;
860	int addrlen = sizeof (struct sockaddr_in);
861
862	if (ctxt == NULL)
863	return(-1);
864	if (ctxt->hostname == NULL)
865	return(-1);
866
867	/*
868	* do the blocking DNS query.
869	*/
870	if (proxy) {
871	port = proxyPort;
872	} else {
873	port = ctxt->port;
874	}
875	if (port == 0)
876	port = 21;
877
878	memset (&ctxt->ftpAddr, 0, sizeof(ctxt->ftpAddr));
879
880	#ifdef SUPPORT_IP6
881	if (have_ipv6 ()) {
882	struct addrinfo hints, tmp, result;
883
884	result = NULL;
885	memset (&hints, 0, sizeof(hints));
886	hints.ai_socktype = SOCK_STREAM;
887
888	if (proxy) {
889	if (getaddrinfo (proxy, NULL, &hints, &result) != 0) {
890	__xmlIOErr(XML_FROM_FTP, 0, "getaddrinfo failed");
891	return (-1);
892	}
893	}
894	else
895	if (getaddrinfo (ctxt->hostname, NULL, &hints, &result) != 0) {
896	__xmlIOErr(XML_FROM_FTP, 0, "getaddrinfo failed");
897	return (-1);
898	}
899
900	for (tmp = result; tmp; tmp = tmp->ai_next)
901	if (tmp->ai_family == AF_INET \|\| tmp->ai_family == AF_INET6)
902	break;
903
904	if (!tmp) {
905	if (result)
906	freeaddrinfo (result);
907	__xmlIOErr(XML_FROM_FTP, 0, "getaddrinfo failed");
908	return (-1);
909	}
910	if (tmp->ai_addrlen > sizeof(ctxt->ftpAddr)) {
911	if (result)
912	freeaddrinfo (result);
913	__xmlIOErr(XML_FROM_FTP, 0, "gethostbyname address mismatch");
914	return (-1);
915	}
916	if (tmp->ai_family == AF_INET6) {
917	memcpy (&ctxt->ftpAddr, tmp->ai_addr, tmp->ai_addrlen);
918	((struct sockaddr_in6 *) &ctxt->ftpAddr)->sin6_port = htons (port);
919	ctxt->controlFd = socket (AF_INET6, SOCK_STREAM, 0);
920	}
921	else {
922	memcpy (&ctxt->ftpAddr, tmp->ai_addr, tmp->ai_addrlen);
923	((struct sockaddr_in *) &ctxt->ftpAddr)->sin_port = htons (port);
924	ctxt->controlFd = socket (AF_INET, SOCK_STREAM, 0);
925	}
926	addrlen = tmp->ai_addrlen;
927	freeaddrinfo (result);
928	}
929	else
930	#endif
931	{
932	if (proxy)
933	hp = gethostbyname (GETHOSTBYNAME_ARG_CAST proxy);
934	else
935	hp = gethostbyname (GETHOSTBYNAME_ARG_CAST ctxt->hostname);
936	if (hp == NULL) {
937	__xmlIOErr(XML_FROM_FTP, 0, "gethostbyname failed");
938	return (-1);
939	}
940	if ((unsigned int) hp->h_length >
941	sizeof(((struct sockaddr_in *)&ctxt->ftpAddr)->sin_addr)) {
942	__xmlIOErr(XML_FROM_FTP, 0, "gethostbyname address mismatch");
943	return (-1);
944	}
945
946	/*
947	* Prepare the socket
948	*/
949	((struct sockaddr_in *)&ctxt->ftpAddr)->sin_family = AF_INET;
950	memcpy (&((struct sockaddr_in *)&ctxt->ftpAddr)->sin_addr,
951	hp->h_addr_list[0], hp->h_length);
952	((struct sockaddr_in *)&ctxt->ftpAddr)->sin_port =
953	(unsigned short)htons ((unsigned short)port);
954	ctxt->controlFd = socket (AF_INET, SOCK_STREAM, 0);
955	addrlen = sizeof (struct sockaddr_in);
956	}
957
958	if (ctxt->controlFd == INVALID_SOCKET) {
959	__xmlIOErr(XML_FROM_FTP, 0, "socket failed");
960	return(-1);
961	}
962
963	/*
964	* Do the connect.
965	*/
966	if (connect(ctxt->controlFd, (struct sockaddr *) &ctxt->ftpAddr,
967	addrlen) < 0) {
968	__xmlIOErr(XML_FROM_FTP, 0, "Failed to create a connection");
969	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
970	ctxt->controlFd = INVALID_SOCKET;
971	return(-1);
972	}
973
974	/*
975	* Wait for the HELLO from the server.
976	*/
977	res = xmlNanoFTPGetResponse(ctxt);
978	if (res != 2) {
979	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
980	ctxt->controlFd = INVALID_SOCKET;
981	return(-1);
982	}
983
984	/*
985	* State diagram for the login operation on the FTP server
986	*
987	* Reference: RFC 959
988	*
989	* 1
990	* +---+ USER +---+------------->+---+
991	* \| B \|---------->\| W \| 2 ---->\| E \|
992	* +---+ +---+------ \| -->+---+
993	* \| \| \| \| \|
994	* 3 \| \| 4,5 \| \| \|
995	* -------------- ----- \| \| \|
996	* \| \| \| \| \|
997	* \| \| \| \| \|
998	* \| --------- \|
999	* \| 1\| \| \| \|
1000	* V \| \| \| \|
1001	* +---+ PASS +---+ 2 \| ------>+---+
1002	* \| \|---------->\| W \|------------->\| S \|
1003	* +---+ +---+ ---------->+---+
1004	* \| \| \| \| \|
1005	* 3 \| \|4,5\| \| \|
1006	* -------------- -------- \|
1007	* \| \| \| \| \|
1008	* \| \| \| \| \|
1009	* \| -----------
1010	* \| 1,3\| \| \| \|
1011	* V \| 2\| \| \|
1012	* +---+ ACCT +---+-- \| ----->+---+
1013	* \| \|---------->\| W \| 4,5 -------->\| F \|
1014	* +---+ +---+------------->+---+
1015	*
1016	* Of course in case of using a proxy this get really nasty and is not
1017	* standardized at all :-(
1018	*/
1019	if (proxy) {
1020	int len;
1021	char buf[400];
1022
1023	if (proxyUser != NULL) {
1024	/*
1025	* We need proxy auth
1026	*/
1027	snprintf(buf, sizeof(buf), "USER %s\r\n", proxyUser);
1028	buf[sizeof(buf) - 1] = 0;
1029	len = strlen(buf);
1030	#ifdef DEBUG_FTP
1031	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1032	#endif
1033	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1034	if (res < 0) {
1035	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1036	closesocket(ctxt->controlFd);
1037	ctxt->controlFd = INVALID_SOCKET;
1038	return(res);
1039	}
1040	res = xmlNanoFTPGetResponse(ctxt);
1041	switch (res) {
1042	case 2:
1043	if (proxyPasswd == NULL)
1044	break;
1045	case 3:
1046	if (proxyPasswd != NULL)
1047	snprintf(buf, sizeof(buf), "PASS %s\r\n", proxyPasswd);
1048	else
1049	snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
1050	buf[sizeof(buf) - 1] = 0;
1051	len = strlen(buf);
1052	#ifdef DEBUG_FTP
1053	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1054	#endif
1055	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1056	if (res < 0) {
1057	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1058	closesocket(ctxt->controlFd);
1059	ctxt->controlFd = INVALID_SOCKET;
1060	return(res);
1061	}
1062	res = xmlNanoFTPGetResponse(ctxt);
1063	if (res > 3) {
1064	closesocket(ctxt->controlFd);
1065	ctxt->controlFd = INVALID_SOCKET;
1066	return(-1);
1067	}
1068	break;
1069	case 1:
1070	break;
1071	case 4:
1072	case 5:
1073	case -1:
1074	default:
1075	closesocket(ctxt->controlFd);
1076	ctxt->controlFd = INVALID_SOCKET;
1077	return(-1);
1078	}
1079	}
1080
1081	/*
1082	* We assume we don't need more authentication to the proxy
1083	* and that it succeeded :-\
1084	*/
1085	switch (proxyType) {
1086	case 0:
1087	/* we will try in sequence */
1088	case 1:
1089	/* Using SITE command */
1090	snprintf(buf, sizeof(buf), "SITE %s\r\n", ctxt->hostname);
1091	buf[sizeof(buf) - 1] = 0;
1092	len = strlen(buf);
1093	#ifdef DEBUG_FTP
1094	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1095	#endif
1096	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1097	if (res < 0) {
1098	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1099	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1100	ctxt->controlFd = INVALID_SOCKET;
1101	return(res);
1102	}
1103	res = xmlNanoFTPGetResponse(ctxt);
1104	if (res == 2) {
1105	/* we assume it worked :-\ 1 is error for SITE command */
1106	proxyType = 1;
1107	break;
1108	}
1109	if (proxyType == 1) {
1110	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1111	ctxt->controlFd = INVALID_SOCKET;
1112	return(-1);
1113	}
1114	case 2:
1115	/* USER user@host command */
1116	if (ctxt->user == NULL)
1117	snprintf(buf, sizeof(buf), "USER anonymous@%s\r\n",
1118	ctxt->hostname);
1119	else
1120	snprintf(buf, sizeof(buf), "USER %s@%s\r\n",
1121	ctxt->user, ctxt->hostname);
1122	buf[sizeof(buf) - 1] = 0;
1123	len = strlen(buf);
1124	#ifdef DEBUG_FTP
1125	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1126	#endif
1127	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1128	if (res < 0) {
1129	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1130	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1131	ctxt->controlFd = INVALID_SOCKET;
1132	return(res);
1133	}
1134	res = xmlNanoFTPGetResponse(ctxt);
1135	if ((res == 1) \|\| (res == 2)) {
1136	/* we assume it worked :-\ */
1137	proxyType = 2;
1138	return(0);
1139	}
1140	if (ctxt->passwd == NULL)
1141	snprintf(buf, sizeof(buf), "PASS anonymous@\r\n");
1142	else
1143	snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd);
1144	buf[sizeof(buf) - 1] = 0;
1145	len = strlen(buf);
1146	#ifdef DEBUG_FTP
1147	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1148	#endif
1149	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1150	if (res < 0) {
1151	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1152	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1153	ctxt->controlFd = INVALID_SOCKET;
1154	return(res);
1155	}
1156	res = xmlNanoFTPGetResponse(ctxt);
1157	if ((res == 1) \|\| (res == 2)) {
1158	/* we assume it worked :-\ */
1159	proxyType = 2;
1160	return(0);
1161	}
1162	if (proxyType == 2) {
1163	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1164	ctxt->controlFd = INVALID_SOCKET;
1165	return(-1);
1166	}
1167	case 3:
1168	/*
1169	* If you need support for other Proxy authentication scheme
1170	* send the code or at least the sequence in use.
1171	*/
1172	default:
1173	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1174	ctxt->controlFd = INVALID_SOCKET;
1175	return(-1);
1176	}
1177	}
1178	/*
1179	* Non-proxy handling.
1180	*/
1181	res = xmlNanoFTPSendUser(ctxt);
1182	if (res < 0) {
1183	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1184	ctxt->controlFd = INVALID_SOCKET;
1185	return(-1);
1186	}
1187	res = xmlNanoFTPGetResponse(ctxt);
1188	switch (res) {
1189	case 2:
1190	return(0);
1191	case 3:
1192	break;
1193	case 1:
1194	case 4:
1195	case 5:
1196	case -1:
1197	default:
1198	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1199	ctxt->controlFd = INVALID_SOCKET;
1200	return(-1);
1201	}
1202	res = xmlNanoFTPSendPasswd(ctxt);
1203	if (res < 0) {
1204	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1205	ctxt->controlFd = INVALID_SOCKET;
1206	return(-1);
1207	}
1208	res = xmlNanoFTPGetResponse(ctxt);
1209	switch (res) {
1210	case 2:
1211	break;
1212	case 3:
1213	__xmlIOErr(XML_FROM_FTP, XML_FTP_ACCNT,
1214	"FTP server asking for ACCNT on anonymous\n");
1215	case 1:
1216	case 4:
1217	case 5:
1218	case -1:
1219	default:
1220	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1221	ctxt->controlFd = INVALID_SOCKET;
1222	return(-1);
1223	}
1224
1225	return(0);
1226	}
1227
1228	/**
1229	* xmlNanoFTPConnectTo:
1230	* @server: an FTP server name
1231	* @port: the port (use 21 if 0)
1232	*
1233	* Tries to open a control connection to the given server/port
1234	*
1235	* Returns an fTP context or NULL if it failed
1236	*/
1237
1238	void*
1239	xmlNanoFTPConnectTo(const char *server, int port) {
1240	xmlNanoFTPCtxtPtr ctxt;
1241	int res;
1242
1243	xmlNanoFTPInit();
1244	if (server == NULL)
1245	return(NULL);
1246	if (port <= 0)
1247	return(NULL);
1248	ctxt = (xmlNanoFTPCtxtPtr) xmlNanoFTPNewCtxt(NULL);
1249	if (ctxt == NULL)
1250	return(NULL);
1251	ctxt->hostname = xmlMemStrdup(server);
1252	if (ctxt->hostname == NULL) {
1253	xmlNanoFTPFreeCtxt(ctxt);
1254	return(NULL);
1255	}
1256	if (port != 0)
1257	ctxt->port = port;
1258	res = xmlNanoFTPConnect(ctxt);
1259	if (res < 0) {
1260	xmlNanoFTPFreeCtxt(ctxt);
1261	return(NULL);
1262	}
1263	return(ctxt);
1264	}
1265
1266	/**
1267	* xmlNanoFTPCwd:
1268	* @ctx: an FTP context
1269	* @directory: a directory on the server
1270	*
1271	* Tries to change the remote directory
1272	*
1273	* Returns -1 incase of error, 1 if CWD worked, 0 if it failed
1274	*/
1275
1276	int
1277	xmlNanoFTPCwd(void ctx, const char directory) {
1278	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1279	char buf[400];
1280	int len;
1281	int res;
1282
1283	if ((ctxt == NULL) \|\| (ctxt->controlFd == INVALID_SOCKET)) return(-1);
1284	if (directory == NULL) return 0;
1285
1286	/*
1287	* Expected response code for CWD:
1288	*
1289	* CWD
1290	* 250
1291	* 500, 501, 502, 421, 530, 550
1292	*/
1293	snprintf(buf, sizeof(buf), "CWD %s\r\n", directory);
1294	buf[sizeof(buf) - 1] = 0;
1295	len = strlen(buf);
1296	#ifdef DEBUG_FTP
1297	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1298	#endif
1299	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1300	if (res < 0) {
1301	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1302	return(res);
1303	}
1304	res = xmlNanoFTPGetResponse(ctxt);
1305	if (res == 4) {
1306	return(-1);
1307	}
1308	if (res == 2) return(1);
1309	if (res == 5) {
1310	return(0);
1311	}
1312	return(0);
1313	}
1314
1315	/**
1316	* xmlNanoFTPDele:
1317	* @ctx: an FTP context
1318	* @file: a file or directory on the server
1319	*
1320	* Tries to delete an item (file or directory) from server
1321	*
1322	* Returns -1 incase of error, 1 if DELE worked, 0 if it failed
1323	*/
1324
1325	int
1326	xmlNanoFTPDele(void ctx, const char file) {
1327	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1328	char buf[400];
1329	int len;
1330	int res;
1331
1332	if ((ctxt == NULL) \|\| (ctxt->controlFd == INVALID_SOCKET) \|\|
1333	(file == NULL)) return(-1);
1334
1335	/*
1336	* Expected response code for DELE:
1337	*
1338	* DELE
1339	* 250
1340	* 450, 550
1341	* 500, 501, 502, 421, 530
1342	*/
1343
1344	snprintf(buf, sizeof(buf), "DELE %s\r\n", file);
1345	buf[sizeof(buf) - 1] = 0;
1346	len = strlen(buf);
1347	#ifdef DEBUG_FTP
1348	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1349	#endif
1350	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1351	if (res < 0) {
1352	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1353	return(res);
1354	}
1355	res = xmlNanoFTPGetResponse(ctxt);
1356	if (res == 4) {
1357	return(-1);
1358	}
1359	if (res == 2) return(1);
1360	if (res == 5) {
1361	return(0);
1362	}
1363	return(0);
1364	}
1365	/**
1366	* xmlNanoFTPGetConnection:
1367	* @ctx: an FTP context
1368	*
1369	* Try to open a data connection to the server. Currently only
1370	* passive mode is supported.
1371	*
1372	* Returns -1 incase of error, 0 otherwise
1373	*/
1374
1375	SOCKET
1376	xmlNanoFTPGetConnection(void *ctx) {
1377	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1378	char buf[200], *cur;
1379	int len, i;
1380	int res;
1381	unsigned char ad[6], adp, portp;
1382	unsigned int temp[6];
1383	#ifdef SUPPORT_IP6
1384	struct sockaddr_storage dataAddr;
1385	#else
1386	struct sockaddr_in dataAddr;
1387	#endif
1388	XML_SOCKLEN_T dataAddrLen;
1389
1390	if (ctxt == NULL) return INVALID_SOCKET;
1391
1392	memset (&dataAddr, 0, sizeof(dataAddr));
1393	#ifdef SUPPORT_IP6
1394	if ((ctxt->ftpAddr).ss_family == AF_INET6) {
1395	ctxt->dataFd = socket (AF_INET6, SOCK_STREAM, IPPROTO_TCP);
1396	((struct sockaddr_in6 *)&dataAddr)->sin6_family = AF_INET6;
1397	dataAddrLen = sizeof(struct sockaddr_in6);
1398	} else
1399	#endif
1400	{
1401	ctxt->dataFd = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
1402	((struct sockaddr_in *)&dataAddr)->sin_family = AF_INET;
1403	dataAddrLen = sizeof (struct sockaddr_in);
1404	}
1405
1406	if (ctxt->dataFd == INVALID_SOCKET) {
1407	__xmlIOErr(XML_FROM_FTP, 0, "socket failed");
1408	return INVALID_SOCKET;
1409	}
1410
1411	if (ctxt->passive) {
1412	#ifdef SUPPORT_IP6
1413	if ((ctxt->ftpAddr).ss_family == AF_INET6)
1414	snprintf (buf, sizeof(buf), "EPSV\r\n");
1415	else
1416	#endif
1417	snprintf (buf, sizeof(buf), "PASV\r\n");
1418	len = strlen (buf);
1419	#ifdef DEBUG_FTP
1420	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1421	#endif
1422	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1423	if (res < 0) {
1424	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1425	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1426	return INVALID_SOCKET;
1427	}
1428	res = xmlNanoFTPReadResponse(ctx);
1429	if (res != 2) {
1430	if (res == 5) {
1431	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1432	return INVALID_SOCKET;
1433	} else {
1434	/*
1435	* retry with an active connection
1436	*/
1437	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1438	ctxt->passive = 0;
1439	}
1440	}
1441	cur = &ctxt->controlBuf[ctxt->controlBufAnswer];
1442	while (((cur < '0') \|\| (cur > '9')) && *cur != '\0') cur++;
1443	#ifdef SUPPORT_IP6
1444	if ((ctxt->ftpAddr).ss_family == AF_INET6) {
1445	if (sscanf (cur, "%u", &temp[0]) != 1) {
1446	__xmlIOErr(XML_FROM_FTP, XML_FTP_EPSV_ANSWER,
1447	"Invalid answer to EPSV\n");
1448	if (ctxt->dataFd != INVALID_SOCKET) {
1449	closesocket (ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1450	}
1451	return INVALID_SOCKET;
1452	}
1453	memcpy (&((struct sockaddr_in6 )&dataAddr)->sin6_addr, &((struct sockaddr_in6 )&ctxt->ftpAddr)->sin6_addr, sizeof(struct in6_addr));
1454	((struct sockaddr_in6 *)&dataAddr)->sin6_port = htons (temp[0]);
1455	}
1456	else
1457	#endif
1458	{
1459	if (sscanf (cur, "%u,%u,%u,%u,%u,%u", &temp[0], &temp[1], &temp[2],
1460	&temp[3], &temp[4], &temp[5]) != 6) {
1461	__xmlIOErr(XML_FROM_FTP, XML_FTP_PASV_ANSWER,
1462	"Invalid answer to PASV\n");
1463	if (ctxt->dataFd != INVALID_SOCKET) {
1464	closesocket (ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1465	}
1466	return INVALID_SOCKET;
1467	}
1468	for (i=0; i<6; i++) ad[i] = (unsigned char) (temp[i] & 0xff);
1469	memcpy (&((struct sockaddr_in *)&dataAddr)->sin_addr, &ad[0], 4);
1470	memcpy (&((struct sockaddr_in *)&dataAddr)->sin_port, &ad[4], 2);
1471	}
1472
1473	if (connect(ctxt->dataFd, (struct sockaddr *) &dataAddr, dataAddrLen) < 0) {
1474	__xmlIOErr(XML_FROM_FTP, 0, "Failed to create a data connection");
1475	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1476	return INVALID_SOCKET;
1477	}
1478	} else {
1479	getsockname(ctxt->dataFd, (struct sockaddr *) &dataAddr, &dataAddrLen);
1480	#ifdef SUPPORT_IP6
1481	if ((ctxt->ftpAddr).ss_family == AF_INET6)
1482	((struct sockaddr_in6 *)&dataAddr)->sin6_port = 0;
1483	else
1484	#endif
1485	((struct sockaddr_in *)&dataAddr)->sin_port = 0;
1486
1487	if (bind(ctxt->dataFd, (struct sockaddr *) &dataAddr, dataAddrLen) < 0) {
1488	__xmlIOErr(XML_FROM_FTP, 0, "bind failed");
1489	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1490	return INVALID_SOCKET;
1491	}
1492	getsockname(ctxt->dataFd, (struct sockaddr *) &dataAddr, &dataAddrLen);
1493
1494	if (listen(ctxt->dataFd, 1) < 0) {
1495	__xmlIOErr(XML_FROM_FTP, 0, "listen failed");
1496	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1497	return INVALID_SOCKET;
1498	}
1499	#ifdef SUPPORT_IP6
1500	if ((ctxt->ftpAddr).ss_family == AF_INET6) {
1501	char buf6[INET6_ADDRSTRLEN];
1502	inet_ntop (AF_INET6, &((struct sockaddr_in6 *)&dataAddr)->sin6_addr,
1503	buf6, INET6_ADDRSTRLEN);
1504	adp = (unsigned char *) buf6;
1505	portp = (unsigned char ) &((struct sockaddr_in6 )&dataAddr)->sin6_port;
1506	snprintf (buf, sizeof(buf), "EPRT \|2\|%s\|%s\|\r\n", adp, portp);
1507	} else
1508	#endif
1509	{
1510	adp = (unsigned char ) &((struct sockaddr_in )&dataAddr)->sin_addr;
1511	portp = (unsigned char ) &((struct sockaddr_in )&dataAddr)->sin_port;
1512	snprintf (buf, sizeof(buf), "PORT %d,%d,%d,%d,%d,%d\r\n",
1513	adp[0] & 0xff, adp[1] & 0xff, adp[2] & 0xff, adp[3] & 0xff,
1514	portp[0] & 0xff, portp[1] & 0xff);
1515	}
1516
1517	buf[sizeof(buf) - 1] = 0;
1518	len = strlen(buf);
1519	#ifdef DEBUG_FTP
1520	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1521	#endif
1522
1523	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1524	if (res < 0) {
1525	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1526	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1527	return INVALID_SOCKET;
1528	}
1529	res = xmlNanoFTPGetResponse(ctxt);
1530	if (res != 2) {
1531	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1532	return INVALID_SOCKET;
1533	}
1534	}
1535	return(ctxt->dataFd);
1536
1537	}
1538
1539	/**
1540	* xmlNanoFTPCloseConnection:
1541	* @ctx: an FTP context
1542	*
1543	* Close the data connection from the server
1544	*
1545	* Returns -1 incase of error, 0 otherwise
1546	*/
1547
1548	int
1549	xmlNanoFTPCloseConnection(void *ctx) {
1550	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1551	int res;
1552	fd_set rfd, efd;
1553	struct timeval tv;
1554
1555	if ((ctxt == NULL) \|\| (ctxt->controlFd == INVALID_SOCKET)) return(-1);
1556
1557	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1558	tv.tv_sec = 15;
1559	tv.tv_usec = 0;
1560	FD_ZERO(&rfd);
1561	FD_SET(ctxt->controlFd, &rfd);
1562	FD_ZERO(&efd);
1563	FD_SET(ctxt->controlFd, &efd);
1564	res = select(ctxt->controlFd + 1, &rfd, NULL, &efd, &tv);
1565	if (res < 0) {
1566	#ifdef DEBUG_FTP
1567	perror("select");
1568	#endif
1569	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1570	return(-1);
1571	}
1572	if (res == 0) {
1573	#ifdef DEBUG_FTP
1574	xmlGenericError(xmlGenericErrorContext,
1575	"xmlNanoFTPCloseConnection: timeout\n");
1576	#endif
1577	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1578	} else {
1579	res = xmlNanoFTPGetResponse(ctxt);
1580	if (res != 2) {
1581	closesocket(ctxt->controlFd); ctxt->controlFd = INVALID_SOCKET;
1582	return(-1);
1583	}
1584	}
1585	return(0);
1586	}
1587
1588	/**
1589	* xmlNanoFTPParseList:
1590	* @list: some data listing received from the server
1591	* @callback: the user callback
1592	* @userData: the user callback data
1593	*
1594	* Parse at most one entry from the listing.
1595	*
1596	* Returns -1 incase of error, the length of data parsed otherwise
1597	*/
1598
1599	static int
1600	xmlNanoFTPParseList(const char list, ftpListCallback callback, void userData) {
1601	const char *cur = list;
1602	char filename[151];
1603	char attrib[11];
1604	char owner[11];
1605	char group[11];
1606	char month[4];
1607	int year = 0;
1608	int minute = 0;
1609	int hour = 0;
1610	int day = 0;
1611	unsigned long size = 0;
1612	int links = 0;
1613	int i;
1614
1615	if (!strncmp(cur, "total", 5)) {
1616	cur += 5;
1617	while (*cur == ' ') cur++;
1618	while ((cur >= '0') && (cur <= '9'))
1619	links = (links * 10) + (*cur++ - '0');
1620	while ((cur == ' ') \|\| (cur == '\n') \|\| (*cur == '\r'))
1621	cur++;
1622	return(cur - list);
1623	} else if (*list == '+') {
1624	return(0);
1625	} else {
1626	while ((cur == ' ') \|\| (cur == '\n') \|\| (*cur == '\r'))
1627	cur++;
1628	if (*cur == 0) return(0);
1629	i = 0;
1630	while (*cur != ' ') {
1631	if (i < 10)
1632	attrib[i++] = *cur;
1633	cur++;
1634	if (*cur == 0) return(0);
1635	}
1636	attrib[10] = 0;
1637	while (*cur == ' ') cur++;
1638	if (*cur == 0) return(0);
1639	while ((cur >= '0') && (cur <= '9'))
1640	links = (links * 10) + (*cur++ - '0');
1641	while (*cur == ' ') cur++;
1642	if (*cur == 0) return(0);
1643	i = 0;
1644	while (*cur != ' ') {
1645	if (i < 10)
1646	owner[i++] = *cur;
1647	cur++;
1648	if (*cur == 0) return(0);
1649	}
1650	owner[i] = 0;
1651	while (*cur == ' ') cur++;
1652	if (*cur == 0) return(0);
1653	i = 0;
1654	while (*cur != ' ') {
1655	if (i < 10)
1656	group[i++] = *cur;
1657	cur++;
1658	if (*cur == 0) return(0);
1659	}
1660	group[i] = 0;
1661	while (*cur == ' ') cur++;
1662	if (*cur == 0) return(0);
1663	while ((cur >= '0') && (cur <= '9'))
1664	size = (size * 10) + (*cur++ - '0');
1665	while (*cur == ' ') cur++;
1666	if (*cur == 0) return(0);
1667	i = 0;
1668	while (*cur != ' ') {
1669	if (i < 3)
1670	month[i++] = *cur;
1671	cur++;
1672	if (*cur == 0) return(0);
1673	}
1674	month[i] = 0;
1675	while (*cur == ' ') cur++;
1676	if (*cur == 0) return(0);
1677	while ((cur >= '0') && (cur <= '9'))
1678	day = (day * 10) + (*cur++ - '0');
1679	while (*cur == ' ') cur++;
1680	if (*cur == 0) return(0);
1681	if ((cur[1] == 0) \|\| (cur[2] == 0)) return(0);
1682	if ((cur[1] == ':') \|\| (cur[2] == ':')) {
1683	while ((cur >= '0') && (cur <= '9'))
1684	hour = (hour * 10) + (*cur++ - '0');
1685	if (*cur == ':') cur++;
1686	while ((cur >= '0') && (cur <= '9'))
1687	minute = (minute * 10) + (*cur++ - '0');
1688	} else {
1689	while ((cur >= '0') && (cur <= '9'))
1690	year = (year * 10) + (*cur++ - '0');
1691	}
1692	while (*cur == ' ') cur++;
1693	if (*cur == 0) return(0);
1694	i = 0;
1695	while ((cur != '\n') && (cur != '\r')) {
1696	if (i < 150)
1697	filename[i++] = *cur;
1698	cur++;
1699	if (*cur == 0) return(0);
1700	}
1701	filename[i] = 0;
1702	if ((cur != '\n') && (cur != '\r'))
1703	return(0);
1704	while ((cur == '\n') \|\| (cur == '\r'))
1705	cur++;
1706	}
1707	if (callback != NULL) {
1708	callback(userData, filename, attrib, owner, group, size, links,
1709	year, month, day, hour, minute);
1710	}
1711	return(cur - list);
1712	}
1713
1714	/**
1715	* xmlNanoFTPList:
1716	* @ctx: an FTP context
1717	* @callback: the user callback
1718	* @userData: the user callback data
1719	* @filename: optional files to list
1720	*
1721	* Do a listing on the server. All files info are passed back
1722	* in the callbacks.
1723	*
1724	* Returns -1 incase of error, 0 otherwise
1725	*/
1726
1727	int
1728	xmlNanoFTPList(void ctx, ftpListCallback callback, void userData,
1729	const char *filename) {
1730	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1731	char buf[4096 + 1];
1732	int len, res;
1733	int indx = 0, base;
1734	fd_set rfd, efd;
1735	struct timeval tv;
1736
1737	if (ctxt == NULL) return (-1);
1738	if (filename == NULL) {
1739	if (xmlNanoFTPCwd(ctxt, ctxt->path) < 1)
1740	return(-1);
1741	ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
1742	if (ctxt->dataFd == INVALID_SOCKET)
1743	return(-1);
1744	snprintf(buf, sizeof(buf), "LIST -L\r\n");
1745	} else {
1746	if (filename[0] != '/') {
1747	if (xmlNanoFTPCwd(ctxt, ctxt->path) < 1)
1748	return(-1);
1749	}
1750	ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
1751	if (ctxt->dataFd == INVALID_SOCKET)
1752	return(-1);
1753	snprintf(buf, sizeof(buf), "LIST -L %s\r\n", filename);
1754	}
1755	buf[sizeof(buf) - 1] = 0;
1756	len = strlen(buf);
1757	#ifdef DEBUG_FTP
1758	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1759	#endif
1760	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1761	if (res < 0) {
1762	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1763	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1764	return(res);
1765	}
1766	res = xmlNanoFTPReadResponse(ctxt);
1767	if (res != 1) {
1768	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1769	return(-res);
1770	}
1771
1772	do {
1773	tv.tv_sec = 1;
1774	tv.tv_usec = 0;
1775	FD_ZERO(&rfd);
1776	FD_SET(ctxt->dataFd, &rfd);
1777	FD_ZERO(&efd);
1778	FD_SET(ctxt->dataFd, &efd);
1779	res = select(ctxt->dataFd + 1, &rfd, NULL, &efd, &tv);
1780	if (res < 0) {
1781	#ifdef DEBUG_FTP
1782	perror("select");
1783	#endif
1784	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1785	return(-1);
1786	}
1787	if (res == 0) {
1788	res = xmlNanoFTPCheckResponse(ctxt);
1789	if (res < 0) {
1790	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1791	ctxt->dataFd = INVALID_SOCKET;
1792	return(-1);
1793	}
1794	if (res == 2) {
1795	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1796	return(0);
1797	}
1798
1799	continue;
1800	}
1801
1802	if ((len = recv(ctxt->dataFd, &buf[indx], sizeof(buf) - (indx + 1), 0)) < 0) {
1803	__xmlIOErr(XML_FROM_FTP, 0, "recv");
1804	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1805	ctxt->dataFd = INVALID_SOCKET;
1806	return(-1);
1807	}
1808	#ifdef DEBUG_FTP
1809	write(1, &buf[indx], len);
1810	#endif
1811	indx += len;
1812	buf[indx] = 0;
1813	base = 0;
1814	do {
1815	res = xmlNanoFTPParseList(&buf[base], callback, userData);
1816	base += res;
1817	} while (res > 0);
1818
1819	memmove(&buf[0], &buf[base], indx - base);
1820	indx -= base;
1821	} while (len != 0);
1822	xmlNanoFTPCloseConnection(ctxt);
1823	return(0);
1824	}
1825
1826	/**
1827	* xmlNanoFTPGetSocket:
1828	* @ctx: an FTP context
1829	* @filename: the file to retrieve (or NULL if path is in context).
1830	*
1831	* Initiate fetch of the given file from the server.
1832	*
1833	* Returns the socket for the data connection, or <0 in case of error
1834	*/
1835
1836
1837	SOCKET
1838	xmlNanoFTPGetSocket(void ctx, const char filename) {
1839	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1840	char buf[300];
1841	int res, len;
1842	if (ctx == NULL)
1843	return INVALID_SOCKET;
1844	if ((filename == NULL) && (ctxt->path == NULL))
1845	return INVALID_SOCKET;
1846	ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
1847	if (ctxt->dataFd == INVALID_SOCKET)
1848	return INVALID_SOCKET;
1849
1850	snprintf(buf, sizeof(buf), "TYPE I\r\n");
1851	len = strlen(buf);
1852	#ifdef DEBUG_FTP
1853	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1854	#endif
1855	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1856	if (res < 0) {
1857	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1858	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1859	return INVALID_SOCKET;
1860	}
1861	res = xmlNanoFTPReadResponse(ctxt);
1862	if (res != 2) {
1863	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1864	return INVALID_SOCKET;
1865	}
1866	if (filename == NULL)
1867	snprintf(buf, sizeof(buf), "RETR %s\r\n", ctxt->path);
1868	else
1869	snprintf(buf, sizeof(buf), "RETR %s\r\n", filename);
1870	buf[sizeof(buf) - 1] = 0;
1871	len = strlen(buf);
1872	#ifdef DEBUG_FTP
1873	xmlGenericError(xmlGenericErrorContext, "%s", buf);
1874	#endif
1875	res = send(ctxt->controlFd, SEND_ARG2_CAST buf, len, 0);
1876	if (res < 0) {
1877	__xmlIOErr(XML_FROM_FTP, 0, "send failed");
1878	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1879	return INVALID_SOCKET;
1880	}
1881	res = xmlNanoFTPReadResponse(ctxt);
1882	if (res != 1) {
1883	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1884	return INVALID_SOCKET;
1885	}
1886	return(ctxt->dataFd);
1887	}
1888
1889	/**
1890	* xmlNanoFTPGet:
1891	* @ctx: an FTP context
1892	* @callback: the user callback
1893	* @userData: the user callback data
1894	* @filename: the file to retrieve
1895	*
1896	* Fetch the given file from the server. All data are passed back
1897	* in the callbacks. The last callback has a size of 0 block.
1898	*
1899	* Returns -1 incase of error, 0 otherwise
1900	*/
1901
1902	int
1903	xmlNanoFTPGet(void ctx, ftpDataCallback callback, void userData,
1904	const char *filename) {
1905	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1906	char buf[4096];
1907	int len = 0, res;
1908	fd_set rfd;
1909	struct timeval tv;
1910
1911	if (ctxt == NULL) return(-1);
1912	if ((filename == NULL) && (ctxt->path == NULL))
1913	return(-1);
1914	if (callback == NULL)
1915	return(-1);
1916	if (xmlNanoFTPGetSocket(ctxt, filename) == INVALID_SOCKET)
1917	return(-1);
1918
1919	do {
1920	tv.tv_sec = 1;
1921	tv.tv_usec = 0;
1922	FD_ZERO(&rfd);
1923	FD_SET(ctxt->dataFd, &rfd);
1924	res = select(ctxt->dataFd + 1, &rfd, NULL, NULL, &tv);
1925	if (res < 0) {
1926	#ifdef DEBUG_FTP
1927	perror("select");
1928	#endif
1929	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1930	return(-1);
1931	}
1932	if (res == 0) {
1933	res = xmlNanoFTPCheckResponse(ctxt);
1934	if (res < 0) {
1935	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1936	ctxt->dataFd = INVALID_SOCKET;
1937	return(-1);
1938	}
1939	if (res == 2) {
1940	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1941	return(0);
1942	}
1943
1944	continue;
1945	}
1946	if ((len = recv(ctxt->dataFd, buf, sizeof(buf), 0)) < 0) {
1947	__xmlIOErr(XML_FROM_FTP, 0, "recv failed");
1948	callback(userData, buf, len);
1949	closesocket(ctxt->dataFd); ctxt->dataFd = INVALID_SOCKET;
1950	return(-1);
1951	}
1952	callback(userData, buf, len);
1953	} while (len != 0);
1954
1955	return(xmlNanoFTPCloseConnection(ctxt));
1956	}
1957
1958	/**
1959	* xmlNanoFTPRead:
1960	* @ctx: the FTP context
1961	* @dest: a buffer
1962	* @len: the buffer length
1963	*
1964	* This function tries to read @len bytes from the existing FTP connection
1965	* and saves them in @dest. This is a blocking call.
1966	*
1967	* Returns the number of byte read. 0 is an indication of an end of connection.
1968	* -1 indicates a parameter error.
1969	*/
1970	int
1971	xmlNanoFTPRead(void ctx, void dest, int len) {
1972	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
1973
1974	if (ctx == NULL) return(-1);
1975	if (ctxt->dataFd == INVALID_SOCKET) return(0);
1976	if (dest == NULL) return(-1);
1977	if (len <= 0) return(0);
1978
1979	len = recv(ctxt->dataFd, dest, len, 0);
1980	if (len <= 0) {
1981	if (len < 0)
1982	__xmlIOErr(XML_FROM_FTP, 0, "recv failed");
1983	xmlNanoFTPCloseConnection(ctxt);
1984	}
1985	#ifdef DEBUG_FTP
1986	xmlGenericError(xmlGenericErrorContext, "Recvd %d bytes\n", len);
1987	#endif
1988	return(len);
1989	}
1990
1991	/**
1992	* xmlNanoFTPOpen:
1993	* @URL: the URL to the resource
1994	*
1995	* Start to fetch the given ftp:// resource
1996	*
1997	* Returns an FTP context, or NULL
1998	*/
1999
2000	void*
2001	xmlNanoFTPOpen(const char *URL) {
2002	xmlNanoFTPCtxtPtr ctxt;
2003	SOCKET sock;
2004
2005	xmlNanoFTPInit();
2006	if (URL == NULL) return(NULL);
2007	if (strncmp("ftp://", URL, 6)) return(NULL);
2008
2009	ctxt = (xmlNanoFTPCtxtPtr) xmlNanoFTPNewCtxt(URL);
2010	if (ctxt == NULL) return(NULL);
2011	if (xmlNanoFTPConnect(ctxt) < 0) {
2012	xmlNanoFTPFreeCtxt(ctxt);
2013	return(NULL);
2014	}
2015	sock = xmlNanoFTPGetSocket(ctxt, ctxt->path);
2016	if (sock == INVALID_SOCKET) {
2017	xmlNanoFTPFreeCtxt(ctxt);
2018	return(NULL);
2019	}
2020	return(ctxt);
2021	}
2022
2023	/**
2024	* xmlNanoFTPClose:
2025	* @ctx: an FTP context
2026	*
2027	* Close the connection and both control and transport
2028	*
2029	* Returns -1 incase of error, 0 otherwise
2030	*/
2031
2032	int
2033	xmlNanoFTPClose(void *ctx) {
2034	xmlNanoFTPCtxtPtr ctxt = (xmlNanoFTPCtxtPtr) ctx;
2035
2036	if (ctxt == NULL)
2037	return(-1);
2038
2039	if (ctxt->dataFd != INVALID_SOCKET) {
2040	closesocket(ctxt->dataFd);
2041	ctxt->dataFd = INVALID_SOCKET;
2042	}
2043	if (ctxt->controlFd != INVALID_SOCKET) {
2044	xmlNanoFTPQuit(ctxt);
2045	closesocket(ctxt->controlFd);
2046	ctxt->controlFd = INVALID_SOCKET;
2047	}
2048	xmlNanoFTPFreeCtxt(ctxt);
2049	return(0);
2050	}
2051
2052	#ifdef STANDALONE
2053	/************************************************************************
2054	* *
2055	* Basic test in Standalone mode *
2056	* *
2057	************************************************************************/
2058	static
2059	void ftpList(void userData, const char filename, const char* attrib,
2060	const char owner, const char group, unsigned long size, int links,
2061	int year, const char *month, int day, int hour, int minute) {
2062	xmlGenericError(xmlGenericErrorContext,
2063	"%s %s %s %ld %s\n", attrib, owner, group, size, filename);
2064	}
2065	static
2066	void ftpData(void userData, const char data, int len) {
2067	if (userData == NULL) return;
2068	if (len <= 0) {
2069	fclose((FILE*)userData);
2070	return;
2071	}
2072	fwrite(data, len, 1, (FILE*)userData);
2073	}
2074
2075	int main(int argc, char **argv) {
2076	void *ctxt;
2077	FILE *output;
2078	char *tstfile = NULL;
2079
2080	xmlNanoFTPInit();
2081	if (argc > 1) {
2082	ctxt = xmlNanoFTPNewCtxt(argv[1]);
2083	if (xmlNanoFTPConnect(ctxt) < 0) {
2084	xmlGenericError(xmlGenericErrorContext,
2085	"Couldn't connect to %s\n", argv[1]);
2086	exit(1);
2087	}
2088	if (argc > 2)
2089	tstfile = argv[2];
2090	} else
2091	ctxt = xmlNanoFTPConnectTo("localhost", 0);
2092	if (ctxt == NULL) {
2093	xmlGenericError(xmlGenericErrorContext,
2094	"Couldn't connect to localhost\n");
2095	exit(1);
2096	}
2097	xmlNanoFTPList(ctxt, ftpList, NULL, tstfile);
2098	output = fopen("/tmp/tstdata", "w");
2099	if (output != NULL) {
2100	if (xmlNanoFTPGet(ctxt, ftpData, (void *) output, tstfile) < 0)
2101	xmlGenericError(xmlGenericErrorContext,
2102	"Failed to get file\n");
2103
2104	}
2105	xmlNanoFTPClose(ctxt);
2106	xmlMemoryDump();
2107	exit(0);
2108	}
2109	#endif /* STANDALONE */
2110	#else /* !LIBXML_FTP_ENABLED */
2111	#ifdef STANDALONE
2112	#include <stdio.h>
2113	int main(int argc, char **argv) {
2114	xmlGenericError(xmlGenericErrorContext,
2115	"%s : FTP support not compiled in\n", argv[0]);
2116	return(0);
2117	}
2118	#endif /* STANDALONE */
2119	#endif /* LIBXML_FTP_ENABLED */
2120	#define bottom_nanoftp
2121	#include "elfgcchack.h"

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