Annotation of libwww/Library/src/HTFTP.c, revision 1.101
1.46 frystyk 1: /* HTFTP.c
2: ** FILE TRANSFER PROTOCOL (FTP) CLIENT
3: **
1.52 frystyk 4: ** (c) COPYRIGHT MIT 1995.
1.46 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
1.101 ! frystyk 6: ** @(#) $Id: HTFTP.c,v 1.100 1999/01/19 11:51:32 frystyk Exp $
1.1 timbl 7: **
8: ** A cache of control connections is kept.
9: **
10: ** Note: Port allocation
11: **
12: ** It is essential that the port is allocated by the system, rather
1.79 frystyk 13: ** than chosen in rotation by us (FTP_POLL_PORTS), or the following
1.1 timbl 14: ** problem occurs.
15: **
16: ** It seems that an attempt by the server to connect to a port which has
17: ** been used recently by a listen on the same socket, or by another
18: ** socket this or another process causes a hangup of (almost exactly)
19: ** one minute. Therefore, we have to use a rotating port number.
20: ** The problem remains that if the application is run twice in quick
21: ** succession, it will hang for what remains of a minute.
22: **
23: ** Authors
1.54 frystyk 24: ** TBL Tim Berners-lee <timbl@w3.org>
1.1 timbl 25: ** DD Denis DeLaRoca 310 825-4580 <CSP1DWD@mvs.oac.ucla.edu>
1.22 frystyk 26: ** LM Lou Montulli <montulli@ukanaix.cc.ukans.edu>
27: ** FM Foteos Macrides <macrides@sci.wfeb.edu>
1.54 frystyk 28: ** HF Henrik Frystyk <frystyk@w3.org>
1.30 luotonen 29: ** AL Ari Luotonen <luotonen@www.cern.ch>
1.23 frystyk 30: **
1.1 timbl 31: ** History:
32: ** 2 May 91 Written TBL, as a part of the WorldWideWeb project.
33: ** 15 Jan 92 Bug fix: close() was used for NETCLOSE for control soc
34: ** 10 Feb 92 Retry if cached connection times out or breaks
35: ** 8 Dec 92 Bug fix 921208 TBL after DD
36: ** 17 Dec 92 Anon FTP password now just WWWuser@ suggested by DD
1.2 timbl 37: ** fails on princeton.edu!
1.22 frystyk 38: ** 27 Dec 93 (FM) Fixed up so FTP now works with VMS hosts. Path
39: ** must be Unix-style and cannot include the device
40: ** or top directory.
41: ** ?? ??? ?? (LM) Added code to prompt and send passwords for non
42: ** anonymous FTP
43: ** 25 Mar 94 (LM) Added code to recognize different ftp server types
44: ** and code to parse dates and sizes on most hosts.
45: ** 27 Mar 93 (FM) Added code for getting dates and sizes on VMS hosts.
1.23 frystyk 46: ** 27 Apr 94 (HF) The module is basically rewritten to conform with
47: ** rfc 959, 1123 and 1579 and turned into a state
48: ** machine. New semantics of ftp URLs are supported.
1.30 luotonen 49: ** 2 May 94 (AL) Fixed possible security hole when the URL contains
50: ** a newline, that could cause multiple commands to be
51: ** sent to an FTP server.
1.60 frystyk 52: ** Sep 95 HFN Rewritten to support streams and persistent conenctions
53: ** and multiplexed IO
1.95 frystyk 54: ** Mar 1998 NG Neil Griffin - Bug fixes and additions for FTP support on NT.
1.22 frystyk 55: ** Notes:
56: ** Portions Copyright 1994 Trustees of Dartmouth College
57: ** Code for recognizing different FTP servers and
58: ** parsing "ls -l" output taken from Macintosh Fetch
59: ** program with permission from Jim Matthews,
60: ** Dartmouth Software Development Team.
1.23 frystyk 61: */
1.1 timbl 62:
1.22 frystyk 63: /* Library include files */
1.96 frystyk 64: #include "wwwsys.h"
1.81 frystyk 65: #include "WWWUtil.h"
66: #include "WWWCore.h"
1.93 frystyk 67: #include "WWWStream.h"
68: #include "WWWTrans.h"
1.101 ! frystyk 69: #include "WWWFile.h"
1.58 frystyk 70: #include "HTReqMan.h"
1.98 frystyk 71: #include "HTNetMan.h"
1.63 frystyk 72: #include "HTFTPDir.h"
1.22 frystyk 73: #include "HTFTP.h" /* Implemented here */
74:
75: /* Macros and other defines */
1.60 frystyk 76: #if 0
77: /* Only use this if ABSOLUTELY necessary! */
1.79 frystyk 78: #define FTP_POLL_PORTS /* If allocation does not work, poll ourselves.*/
1.1 timbl 79: #endif
80:
1.79 frystyk 81: #ifdef FTP_POLL_PORTS
1.23 frystyk 82: #define FIRST_TCP_PORT 1024 /* Region to try for a listening port */
83: #define LAST_TCP_PORT 5999
1.60 frystyk 84: PRIVATE int DataPort = FIRST_TCP_PORT;
1.1 timbl 85: #endif
86:
1.60 frystyk 87: #ifndef FTP_PORT
88: #define FTP_PORT 21
89: #define FTP_DATA 20
1.1 timbl 90: #endif
1.60 frystyk 91:
92: #define WWW_FTP_CLIENT "libwww@" /* If can't get user-info, use this */
93: #define FTP_DIR(me) ((me)->type=='L' || (me)->type=='N')
1.1 timbl 94:
1.58 frystyk 95: /*
96: ** Local context structure used in the HTNet object.
97: */
1.45 frystyk 98: typedef enum _HTFTPState {
1.60 frystyk 99: FTP_SUCCESS = -2,
100: FTP_ERROR = -1,
1.58 frystyk 101: FTP_BEGIN = 0,
102: FTP_NEED_CCON, /* Control connection */
1.60 frystyk 103: FTP_NEED_LOGIN,
1.58 frystyk 104: FTP_NEED_DCON, /* Data connection */
1.60 frystyk 105: FTP_NEED_DATA,
106: FTP_NEED_SERVER /* For directory listings */
1.39 frystyk 107: } HTFTPState;
108:
1.58 frystyk 109: typedef struct _ftp_ctrl {
1.60 frystyk 110: HTChunk * cmd;
111: int repcode;
112: char * reply;
113: char * uid;
1.58 frystyk 114: char * passwd;
1.60 frystyk 115: char * account;
1.58 frystyk 116: HTFTPState state; /* State of the connection */
1.60 frystyk 117: int substate; /* For hierarchical states */
118: BOOL sent; /* Read or write command */
119: BOOL cwd; /* Done cwd */
120: BOOL reset; /* Expect greeting */
1.63 frystyk 121: FTPServerType server; /* Type of server */
1.93 frystyk 122: HTNet * cnet; /* Control connection */
1.60 frystyk 123: HTNet * dnet; /* Data connection */
1.95 frystyk 124: /* begin _GM_ */
125: /* Note: libwww bug ID: GM3 */
126: BOOL alreadyLoggedIn;
127: /* end _GM_ */
1.58 frystyk 128: } ftp_ctrl;
1.39 frystyk 129:
1.58 frystyk 130: typedef struct _ftp_data {
1.60 frystyk 131: char host[30]; /* Host to contact for data */
132: char * file; /* File or dir name */
133: char * offset; /* offset into file */
134: BOOL pasv; /* Active or passive */
135: char type; /* 'A', 'I', 'L'(IST), 'N'(LST) */
1.93 frystyk 136: int complete; /* Check if both ctrl and data is loaded */
1.76 frystyk 137: BOOL stream_error;
1.58 frystyk 138: } ftp_data;
1.39 frystyk 139:
1.60 frystyk 140: struct _HTStream {
1.79 frystyk 141: const HTStreamClass * isa;
1.60 frystyk 142: HTStream * target;
143: HTRequest * request;
144: ftp_ctrl * ctrl;
1.80 frystyk 145: HTEOLState state;
1.60 frystyk 146: HTChunk * welcome;
1.62 frystyk 147: BOOL junk; /* For too long lines */
1.60 frystyk 148: BOOL first_line;
1.63 frystyk 149: char buffer[MAX_FTP_LINE+1];
1.60 frystyk 150: int buflen;
1.92 eric 151: HTHost * host;
1.60 frystyk 152: };
153:
1.81 frystyk 154: struct _HTInputStream {
155: const HTInputStreamClass * isa;
156: };
157:
1.60 frystyk 158: typedef enum _FTPDataCon {
159: FTP_DATA_PASV = 0x1,
160: FTP_DATA_PORT = 0x2
161: } FTPDataCon;
162:
163: PRIVATE FTPDataCon FTPMode = FTP_DATA_PASV;
1.39 frystyk 164:
1.95 frystyk 165: /* Added by Neil Griffin */
166: PRIVATE FTPTransferMode g_FTPTransferMode = FTP_DEFAULT_TRANSFER_MODE;
1.97 frystyk 167: PRIVATE FTPControlMode g_FTPControlMode = FTP_DEFAULT_CONTROL_MODE;
1.95 frystyk 168:
1.23 frystyk 169: /* ------------------------------------------------------------------------- */
1.60 frystyk 170: /* FTP Status Line Stream */
1.22 frystyk 171: /* ------------------------------------------------------------------------- */
1.60 frystyk 172:
173: /* FTPCleanup
174: ** ----------
175: ** This function closes the connection and frees memory.
176: ** Returns YES on OK, else NO
177: */
1.65 frystyk 178: PRIVATE int FTPCleanup (HTRequest * request, int status)
1.60 frystyk 179: {
1.75 frystyk 180: if (request) {
1.84 frystyk 181: HTNet * cnet = HTRequest_net(request);
182: ftp_ctrl * ctrl = (ftp_ctrl *) HTNet_context(cnet);
183: HTStream * input = HTRequest_inputStream(request);
1.98 frystyk 184:
185: if (status == HT_INTERRUPTED) {
186: HTAlertCallback * cbf = HTAlert_find(HT_PROG_INTERRUPT);
187: if (cbf) (*cbf)(request, HT_PROG_INTERRUPT,
188: HT_MSG_NULL, NULL, NULL, NULL);
189: } else if (status == HT_TIMEOUT) {
190: HTAlertCallback * cbf = HTAlert_find(HT_PROG_TIMEOUT);
191: if (cbf) (*cbf)(request, HT_PROG_TIMEOUT,
192: HT_MSG_NULL, NULL, NULL, NULL);
193: } else if (status == HT_LOADED) {
194: HTAlertCallback * cbf = HTAlert_find(HT_PROG_DONE);
195: if (cbf) (*cbf)(request, HT_PROG_DONE,
196: HT_MSG_NULL, NULL, NULL, NULL);
197: }
198:
1.93 frystyk 199: /* Free control stream with data TO network */
1.84 frystyk 200: if (!HTRequest_isDestination(request) && input) {
1.75 frystyk 201: if (status == HT_INTERRUPTED)
1.84 frystyk 202: (*input->isa->abort)(input, NULL);
1.75 frystyk 203: else
1.84 frystyk 204: (*input->isa->_free)(input);
1.75 frystyk 205: }
206:
207: /* Remove the request object and our own context structure for http */
1.84 frystyk 208: if (cnet && ctrl) {
1.75 frystyk 209: HTNet * dnet = ctrl->dnet;
1.84 frystyk 210: ftp_data * data = (ftp_data *) HTNet_context(dnet);
1.75 frystyk 211: HTChunk_delete(ctrl->cmd);
1.77 frystyk 212: HT_FREE(ctrl->reply);
213: HT_FREE(ctrl->uid);
214: HT_FREE(ctrl->passwd);
215: HT_FREE(ctrl->account);
216: HT_FREE(ctrl);
1.84 frystyk 217: if (dnet && data) {
1.77 frystyk 218: HT_FREE(data->file);
219: HT_FREE(data);
1.75 frystyk 220: }
1.93 frystyk 221: #if 0
1.88 frystyk 222: HTNet_setPersistent(dnet, NO, HT_TP_SINGLE);
1.93 frystyk 223: #endif
1.98 frystyk 224: /* See if we got a content length */
225: if (status == HT_LOADED)
226: HTAnchor_setLength(HTRequest_anchor(request), HTNet_bytesRead(dnet));
227:
228: HTNet_delete(dnet, HT_IGNORE);
1.75 frystyk 229: }
230: HTNet_delete(cnet, status);
231: return YES;
1.60 frystyk 232: }
1.75 frystyk 233: return NO;
1.60 frystyk 234: }
235:
236: /* ScanResponse
237: ** ------------
238: ** Analyzes the response from the FTP server.
239: ** Returns HT_LOADED if OK, HT_OK if more, HT_ERROR if error
240: ** the control connection.
1.33 frystyk 241: */
1.65 frystyk 242: PRIVATE int ScanResponse (HTStream * me)
1.33 frystyk 243: {
1.60 frystyk 244: int reply = 0;
245: char cont = '\0';
246: char *ptr = me->buffer+4;
247: *(me->buffer+me->buflen) = '\0';
1.95 frystyk 248: /* begin _GM_ */
249: /* Note: libwww bug ID: GM3 */
250: me->ctrl->alreadyLoggedIn = NO;
251: /* end _GM_ */
1.94 frystyk 252: if (isdigit((int) *(me->buffer))) sscanf(me->buffer, "%d%c", &reply, &cont);
1.60 frystyk 253: if (me->first_line) {
1.78 eric 254: if (PROT_TRACE) HTTrace("FTP Rx...... `%s\'\n", me->buffer);
1.60 frystyk 255: if (!reply) return HT_ERROR;
256: me->first_line = NO;
257: me->ctrl->repcode = reply;
258: StrAllocCopy(me->ctrl->reply, ptr);
1.95 frystyk 259: /* begin _GM_ */
260: /* Note: libwww bug ID: GM3 */
261: if ( (reply == 530) && (strcasestr(me->buffer, "already") != NULL) ) {
262: me->ctrl->alreadyLoggedIn = YES;
263: } else {
264: me->ctrl->alreadyLoggedIn = NO;
265: }
266: /* end _GM_ */
1.60 frystyk 267: } else {
1.73 frystyk 268: HTChunk_puts(me->welcome, ptr);
269: HTChunk_putc(me->welcome, '\n');
1.33 frystyk 270: }
1.60 frystyk 271: me->buflen = 0;
1.68 frystyk 272: me->state = EOL_BEGIN;
1.60 frystyk 273: if (cont != '-') {
274: me->first_line = YES;
275: return HT_LOADED;
1.33 frystyk 276: }
1.60 frystyk 277: return HT_OK;
1.33 frystyk 278: }
279:
1.60 frystyk 280: /*
281: ** Searches for FTP header line until buffer fills up or a CRLF or LF
282: ** is found
1.23 frystyk 283: */
1.79 frystyk 284: PRIVATE int FTPStatus_put_block (HTStream * me, const char * b, int l)
1.92 eric 285: {
1.60 frystyk 286: int status;
1.93 frystyk 287: HTHost_setConsumed(me->host, l);
1.60 frystyk 288: while (l-- > 0) {
289: if (me->state == EOL_FCR) {
290: if (*b == LF) {
1.62 frystyk 291: if (!me->junk) {
1.93 frystyk 292: if ((status = ScanResponse(me)) != HT_OK) return status;
1.62 frystyk 293: } else {
294: me->buflen = 0;
295: me->junk = NO;
296: }
1.60 frystyk 297: }
298: } else if (*b == CR) {
299: me->state = EOL_FCR;
300: } else if (*b == LF) {
1.62 frystyk 301: if (!me->junk) {
1.93 frystyk 302: if ((status = ScanResponse(me)) != HT_OK) return status;
1.62 frystyk 303: } else {
304: me->buflen = 0;
305: me->junk = NO;
306: }
1.60 frystyk 307: } else {
308: *(me->buffer+me->buflen++) = *b;
1.63 frystyk 309: if (me->buflen >= MAX_FTP_LINE) {
1.93 frystyk 310: if (PROT_TRACE) HTTrace("FTP Status.. Line too long - chopped\n");
1.62 frystyk 311: me->junk = YES;
312: if ((status = ScanResponse(me)) != HT_OK) {
313: me->junk = NO;
314: return status;
315: }
1.23 frystyk 316: }
317: }
1.60 frystyk 318: b++;
1.25 frystyk 319: }
1.60 frystyk 320: return HT_OK;
1.25 frystyk 321: }
322:
1.79 frystyk 323: PRIVATE int FTPStatus_put_string (HTStream * me, const char * s)
1.60 frystyk 324: {
325: return FTPStatus_put_block(me, s, (int) strlen(s));
326: }
1.25 frystyk 327:
1.65 frystyk 328: PRIVATE int FTPStatus_put_character (HTStream * me, char c)
1.25 frystyk 329: {
1.60 frystyk 330: return FTPStatus_put_block(me, &c, 1);
331: }
1.25 frystyk 332:
1.65 frystyk 333: PRIVATE int FTPStatus_flush (HTStream * me)
1.60 frystyk 334: {
335: return (*me->target->isa->flush)(me->target);
1.23 frystyk 336: }
1.22 frystyk 337:
1.65 frystyk 338: PRIVATE int FTPStatus_free (HTStream * me)
1.22 frystyk 339: {
1.60 frystyk 340: int status = HT_OK;
341: if (me->target) {
342: if ((status = (*me->target->isa->_free)(me->target)) == HT_WOULD_BLOCK)
343: return HT_WOULD_BLOCK;
1.22 frystyk 344: }
1.73 frystyk 345: HTChunk_delete(me->welcome);
1.77 frystyk 346: HT_FREE(me);
1.60 frystyk 347: return HT_OK;
1.22 frystyk 348: }
349:
1.68 frystyk 350: PRIVATE int FTPStatus_abort (HTStream * me, HTList * e)
1.22 frystyk 351: {
1.60 frystyk 352: if (me->target)
353: (*me->target->isa->abort)(me->target, e);
1.73 frystyk 354: HTChunk_delete(me->welcome);
1.77 frystyk 355: HT_FREE(me);
1.60 frystyk 356: if (PROT_TRACE)
1.78 eric 357: HTTrace("FTPStatus... ABORTING...\n");
1.60 frystyk 358: return HT_ERROR;
1.22 frystyk 359: }
360:
1.60 frystyk 361: /* FTPStatus Stream
362: ** -----------------
1.22 frystyk 363: */
1.79 frystyk 364: PRIVATE const HTStreamClass FTPStatusClass =
1.60 frystyk 365: {
366: "FTPStatus",
367: FTPStatus_flush,
368: FTPStatus_free,
369: FTPStatus_abort,
370: FTPStatus_put_character,
371: FTPStatus_put_string,
372: FTPStatus_put_block
373: };
374:
1.92 eric 375: PRIVATE HTStream * FTPStatus_new (HTRequest * request, ftp_ctrl * ctrl, HTHost * host)
1.60 frystyk 376: {
1.77 frystyk 377: HTStream * me;
378: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
379: HT_OUTOFMEM("FTPStatus_new");
1.60 frystyk 380: me->isa = &FTPStatusClass;
381: me->request = request;
382: me->first_line = YES;
1.73 frystyk 383: me->welcome = HTChunk_new(256);
1.60 frystyk 384: me->ctrl = ctrl;
385: me->state = EOL_BEGIN;
1.92 eric 386: me->host = host;
1.60 frystyk 387: return me;
1.22 frystyk 388: }
389:
1.60 frystyk 390: /* ------------------------------------------------------------------------- */
391: /* FTP Client Functions for managing control and data connections */
392: /* ------------------------------------------------------------------------- */
1.22 frystyk 393:
1.60 frystyk 394: PRIVATE int SendCommand (HTRequest *request, ftp_ctrl *ctrl,
395: char *token, char *pars)
396: {
397: int len = strlen(token) + (pars ? strlen(pars)+1:0) + 2;
1.84 frystyk 398: HTStream * input = HTRequest_inputStream(request);
1.73 frystyk 399: HTChunk_clear(ctrl->cmd);
400: HTChunk_ensure(ctrl->cmd, len);
1.60 frystyk 401: if (pars && *pars)
1.73 frystyk 402: sprintf(HTChunk_data(ctrl->cmd), "%s %s%c%c", token, pars, CR, LF);
1.60 frystyk 403: else
1.73 frystyk 404: sprintf(HTChunk_data(ctrl->cmd), "%s%c%c", token, CR, LF);
1.78 eric 405: if (PROT_TRACE) HTTrace("FTP Tx...... %s", HTChunk_data(ctrl->cmd));
1.84 frystyk 406: return (*input->isa->put_block)(input, HTChunk_data(ctrl->cmd), len);
1.60 frystyk 407: }
408:
409: /* HTFTPParseURL
410: ** -------------
411: ** Scan URL for uid and passwd, and any data type indication. The
412: ** expected format is [user[:password]@]host[:port].
413: ** If no values are found then use defaults.
414: ** Returns YES if OK, else NO
1.22 frystyk 415: */
1.83 frystyk 416: PRIVATE BOOL HTFTPParseURL (HTRequest * request,
417: char *url, ftp_ctrl *ctrl, ftp_data *data)
1.22 frystyk 418: {
1.60 frystyk 419: char *login = HTParse(url, "", PARSE_HOST);
420: char *path = HTParse(url, "", PARSE_PATH+PARSE_PUNCTUATION);
421: char *ptr = strchr(login, '@');
422: if (ptr) { /* Uid and/or passwd specified */
423: char *passwd;
424: *ptr = '\0';
425: if ((passwd = strchr(login, ':'))) { /* Passwd specified */
426: *passwd++ = '\0';
427: HTUnEscape(passwd);
428: StrAllocCopy(ctrl->passwd, passwd);
1.22 frystyk 429: }
1.60 frystyk 430: HTUnEscape(login);
431: StrAllocCopy(ctrl->uid, login);
1.97 frystyk 432: } else if (g_FTPControlMode & FTP_ALWAYS_ASK_UID_PW) {
433: /* Added by Marek Nagy. */
434: ctrl->uid=NULL;
435: ctrl->passwd=NULL;
436: /* End of adding. */
437: } else { /* Use anonymous */
1.83 frystyk 438: HTUserProfile * up = HTRequest_userProfile(request);
1.97 frystyk 439: const char * mailaddress = HTUserProfile_email(up);
1.60 frystyk 440: StrAllocCopy(ctrl->uid, "anonymous");
441: if (mailaddress)
442: StrAllocCopy(ctrl->passwd, mailaddress);
443: else
444: StrAllocCopy(ctrl->passwd, WWW_FTP_CLIENT);
1.22 frystyk 445: }
1.95 frystyk 446: /* begin _GM_ */
447: /* Note: libwww bug ID: GM6 */
448: {
1.97 frystyk 449: /* char tempParams[512];
1.95 frystyk 450: sprintf(tempParams, "Username='%s', Password='%s'", ctrl->uid, ctrl->passwd);
451: HTRequest_addError(request, ERR_INFO, NO, HTERR_OK,
452: tempParams, strlen(tempParams), "HTFTPParseURL");
1.97 frystyk 453: */ }
1.95 frystyk 454: /* end _GM_ */
1.66 frystyk 455: if (PROT_TRACE)
1.78 eric 456: HTTrace("FTPParse.... uid `%s\' pw `%s\'\n",
1.66 frystyk 457: ctrl->uid ? ctrl->uid : "<null>",
458: ctrl->passwd ? ctrl->passwd : "<null>");
1.60 frystyk 459:
460: ptr = strchr(path, ';');
461: if (ptr) {
462: *ptr = '\0';
463: if (strncasecomp(ptr, ";type=", 6)) /* Look for type */
464: data->type = TOUPPER(*(ptr+6));
465: else if (*(ptr-1) == '/')
466: data->type = 'N';
467: } else if (*(path+strlen(path)-1) == '/') {
468: *(path+strlen(path)-1) = '\0';
469: data->type = 'N';
470: }
471: if (data->type && PROT_TRACE)
1.78 eric 472: HTTrace("FTPParse.... Datatype %c\n", data->type);
1.60 frystyk 473: StrAllocCopy(data->file, path);
474: data->offset = data->file;
1.77 frystyk 475: HT_FREE(login);
476: HT_FREE(path);
1.60 frystyk 477: return YES;
1.22 frystyk 478: }
479:
1.60 frystyk 480: /* Use LIST or NLST
481: ** ----------------
482: ** This function sets the type field for what type of list we can use
483: ** Returns YES if OK, else NO
484: */
1.63 frystyk 485: PRIVATE BOOL FTPListType (ftp_data * data, FTPServerType type)
1.60 frystyk 486: {
487: if (!data) return NO;
488: switch (type) {
489: case FTP_GENERIC: data->type='N'; break;
490: case FTP_MACHTEN: data->type='L'; break;
491: case FTP_UNIX: data->type='L'; break;
492: case FTP_VMS: data->type='L'; break;
493: case FTP_CMS: data->type='N'; break;
494: case FTP_DCTS: data->type='N'; break;
495: case FTP_TCPC: data->type='N'; break;
496: case FTP_PETER_LEWIS: data->type='L'; break;
497: case FTP_NCSA: data->type='N'; break;
498: case FTP_WINNT: data->type='L'; break;
499: default: data->type='N'; break;
500: }
501: return YES;
502: }
503:
504: /* Open a Data socket for listening on
505: ** -----------------------------------
506: ** Set up a port to listen for data
507: ** Returns YES if OK, else NO
1.22 frystyk 508: */
1.60 frystyk 509: PRIVATE BOOL ListenSocket (HTNet *cnet, HTNet *dnet, ftp_data *data)
1.22 frystyk 510: {
1.79 frystyk 511: #ifdef FTP_POLL_PORTS
1.60 frystyk 512: unsigned short old_DataPort = DataPort;
513: for (DataPort=old_DataPort+1;; DataPort++) {
514: if (DataPort > LAST_TCP_PORT)
515: DataPort = FIRST_TCP_PORT;
516: if (DataPort == old_DataPort) {
1.78 eric 517: if(PROT_TRACE) HTTrace("FTP......... No data port found\n");
1.60 frystyk 518: return NO;
519: }
1.71 frystyk 520: if (HTDoListen(dnet, DataPort, 1) == HT_OK)
1.60 frystyk 521: break;
1.85 frystyk 522: #if 0
1.91 frystyk 523: if (HTNet_socket(dnet) != INVSOC) {
524: NETCLOSE(HTNet_socket(dnet));
525: HTNet_socket(dnet) = INVSOC;
1.60 frystyk 526: }
1.85 frystyk 527: #else
528: HTDoClose(dnet);
529: #endif
1.22 frystyk 530: }
1.60 frystyk 531: #else
1.91 frystyk 532: if (HTDoListen(dnet, 0, HTNet_socket(cnet), 1) != HT_OK) return NO;
1.79 frystyk 533: #endif /* FTP_POLL_PORTS */
1.22 frystyk 534:
1.60 frystyk 535: /* Now we must find out who we are to tell the other guy */
536: {
537: SockA local_addr;
538: int addr_size = sizeof(local_addr);
539: memset((void *) &local_addr, '\0', sizeof(local_addr));
1.91 frystyk 540: if (getsockname(HTNet_socket(dnet), (struct sockaddr *) &local_addr,
1.60 frystyk 541: &addr_size) < 0) {
1.93 frystyk 542: HTRequest_addSystemError(HTNet_request(dnet), ERR_FATAL, socerrno,
1.68 frystyk 543: NO, "getsockname");
1.60 frystyk 544: return NO;
1.22 frystyk 545: }
1.78 eric 546: if (PROT_TRACE) HTTrace("FTP......... This host is `%s\'\n",
1.60 frystyk 547: HTInetString(&local_addr));
548: {
549: u_long addr = local_addr.sin_addr.s_addr;
550: u_short port = local_addr.sin_port;
551: sprintf(data->host, "%d,%d,%d,%d,%d,%d",
552: (int)*((unsigned char *)(&addr)+0),
553: (int)*((unsigned char *)(&addr)+1),
554: (int)*((unsigned char *)(&addr)+2),
555: (int)*((unsigned char *)(&addr)+3),
556: (int)*((unsigned char *)(&port)+0),
557: (int)*((unsigned char *)(&port)+1));
1.22 frystyk 558: }
559: }
1.60 frystyk 560: return YES;
1.22 frystyk 561: }
562:
1.60 frystyk 563: /* HTFTPLogin
564: ** -----------
565: ** This function makes a login to a ftp-server. It takes the user name
566: ** and passwd specified in ctrl->user and if that fails or an additional
567: ** account is needed, the user is prompted.
568: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.22 frystyk 569: */
1.60 frystyk 570: PRIVATE int HTFTPLogin (HTRequest *request, HTNet *cnet, ftp_ctrl *ctrl)
1.22 frystyk 571: {
1.60 frystyk 572: int status;
573: typedef enum _state {
574: SUB_ERROR = -2,
575: SUB_SUCCESS = -1,
576: NEED_SELECT = 0,
577: NEED_GREETING,
578: NEED_REIN,
579: NEED_UID,
580: NEED_PASSWD,
581: NEED_ACCOUNT,
582: PROMPT_USER
583: } state;
584:
585: /* Jump into a second level state machine */
586: while (1) {
587: switch ((state) ctrl->substate) {
1.99 frystyk 588: case NEED_SELECT:
589: {
590: HTAlertCallback * cbf = HTAlert_find(HT_PROG_LOGIN);
591: if (cbf) (*cbf)(request, HT_PROG_LOGIN, HT_MSG_NULL, NULL, NULL, NULL);
592: if (PROT_TRACE) HTTrace("FTP Login.. now in state NEED_SELECT\n");
593: ctrl->substate = ctrl->reset ? NEED_REIN : NEED_GREETING;
594: }
1.60 frystyk 595: break;
596:
597: case NEED_GREETING:
1.95 frystyk 598: if (PROT_TRACE) HTTrace("FTP Login.. now in state NEED_GREETING\n");
1.93 frystyk 599: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 600: if (status == HT_WOULD_BLOCK)
601: return HT_WOULD_BLOCK;
602: else if (status == HT_LOADED) {
1.66 frystyk 603: if (ctrl->repcode/100 == 2) {
604: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
605: NEED_UID : PROMPT_USER;
1.95 frystyk 606: } else {
1.60 frystyk 607: ctrl->substate = SUB_ERROR;
1.95 frystyk 608: }
609: } else {
1.60 frystyk 610: ctrl->substate = SUB_ERROR;
1.95 frystyk 611: }
1.60 frystyk 612: break;
613:
614: case NEED_REIN:
1.95 frystyk 615: if (PROT_TRACE) HTTrace("FTP Login.. now in state NEED_REIN\n");
1.60 frystyk 616: if (!ctrl->sent) {
617: status = SendCommand(request, ctrl, "REIN", NULL);
618: if (status == HT_WOULD_BLOCK)
619: return HT_WOULD_BLOCK;
620: else if (status == HT_ERROR)
621: ctrl->substate = SUB_ERROR;
622: ctrl->sent = YES;
623: } else {
1.93 frystyk 624: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 625: if (status == HT_WOULD_BLOCK)
626: return HT_WOULD_BLOCK;
627: else if (status == HT_LOADED) {
1.95 frystyk 628: /* begin _GM_ */
629: /* Note: libwww bug ID: GM8 */
630: /* if (ctrl->repcode/100 == 2) { */
631: /* If the FTP server doesn't support the REIN command, then
632: the return code will be 502 */
633: if ((ctrl->repcode/100 == 2) || (ctrl->repcode == 502)) {
634: /* end _GM_ */
1.66 frystyk 635: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
636: NEED_UID : PROMPT_USER;
1.95 frystyk 637: } else {
1.60 frystyk 638: ctrl->substate = SUB_SUCCESS; /* hope the best */
1.95 frystyk 639: }
640: } else {
1.60 frystyk 641: ctrl->substate = SUB_ERROR;
1.95 frystyk 642: }
1.60 frystyk 643: ctrl->sent = NO;
1.22 frystyk 644: }
1.60 frystyk 645: break;
646:
647: case NEED_UID:
1.95 frystyk 648: if (PROT_TRACE) HTTrace("FTP Login.. now in state NEED_UID\n");
1.60 frystyk 649: if (!ctrl->sent) {
650: status = SendCommand(request, ctrl, "USER", ctrl->uid);
651: if (status == HT_WOULD_BLOCK)
652: return HT_WOULD_BLOCK;
653: else if (status == HT_ERROR)
654: ctrl->substate = SUB_ERROR;
655: ctrl->sent = YES;
1.22 frystyk 656: } else {
1.93 frystyk 657: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 658: if (status == HT_WOULD_BLOCK)
659: return HT_WOULD_BLOCK;
660: else if (status == HT_LOADED) {
661: int code = ctrl->repcode/100;
662: if (code == 2) /* Logged in w/o passwd! */
663: ctrl->substate = SUB_SUCCESS;
1.66 frystyk 664: else if (code == 3) { /* Password demanded */
665: ctrl->substate = (ctrl->passwd && *ctrl->passwd) ?
666: NEED_PASSWD : PROMPT_USER;
1.95 frystyk 667: /* begin _GM_ */
668: /* Note: libwww bug ID: GM3 */
669: /* } else if (ctrl->repcode == 530) */
670: /* ctrl->substate = PROMPT_USER;*/ /* User unknown */
671: } else if (ctrl->repcode == 530) {
672: if (ctrl->alreadyLoggedIn == YES) {
673: ctrl->substate = SUB_SUCCESS;
674: if (PROT_TRACE) HTTrace("FTP Login.. Already logged in\n");
675: } else {
676: ctrl->substate = PROMPT_USER;
677: if (PROT_TRACE) HTTrace("FTP Login.. User Unknown\n");
678: }
679: }
680: /* end _GM_ */
1.60 frystyk 681: else
682: ctrl->substate = SUB_ERROR;
683: } else
684: ctrl->substate = SUB_ERROR;
685: ctrl->sent = NO;
1.22 frystyk 686: }
1.60 frystyk 687: break;
1.1 timbl 688:
1.60 frystyk 689: case NEED_PASSWD:
1.95 frystyk 690: if (PROT_TRACE) HTTrace("FTP Login.. now in state NEED_PASSWD\n");
1.60 frystyk 691: if (!ctrl->sent) {
692: status = SendCommand(request, ctrl, "PASS", ctrl->passwd);
693: if (status == HT_WOULD_BLOCK)
694: return HT_WOULD_BLOCK;
695: else if (status == HT_ERROR)
696: ctrl->substate = SUB_ERROR;
697: ctrl->sent = YES;
698: } else {
1.93 frystyk 699: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 700: if (status == HT_WOULD_BLOCK)
701: return HT_WOULD_BLOCK;
702: else if (status == HT_LOADED) {
703: int code = ctrl->repcode/100;
704: if (code == 2) /* Logged in with passwd */
705: ctrl->substate = SUB_SUCCESS;
1.70 frystyk 706: else if (code == 3) { /* Account required */
707: HTAlertCallback *cbf = HTAlert_find(HT_A_PROMPT);
708: HTAlertPar * reply = HTAlert_newReply();
709: if (cbf && (*cbf)(request, HT_A_PROMPT,
710: HT_MSG_ACCOUNT, NULL, NULL, reply)) {
711: ctrl->account = HTAlert_replyMessage(reply);
1.60 frystyk 712: ctrl->substate = NEED_ACCOUNT;
1.70 frystyk 713: } else
1.60 frystyk 714: ctrl->substate = SUB_ERROR;
1.70 frystyk 715: HTAlert_deleteReply(reply);
1.60 frystyk 716: } else if (ctrl->repcode == 530)
717: ctrl->substate = PROMPT_USER;
718: else
719: ctrl->substate = SUB_ERROR;
720: } else
721: ctrl->substate = SUB_ERROR;
722: ctrl->sent = NO;
723: }
724: break;
1.1 timbl 725:
1.60 frystyk 726: case NEED_ACCOUNT:
1.95 frystyk 727: if (PROT_TRACE) HTTrace("FTP Login.. now in state NEED_ACCOUNT\n");
1.60 frystyk 728: if (!ctrl->sent) {
729: status = SendCommand(request, ctrl, "ACCT", ctrl->account);
730: if (status == HT_WOULD_BLOCK)
731: return HT_WOULD_BLOCK;
732: else if (status == HT_ERROR)
733: ctrl->substate = SUB_ERROR;
734: ctrl->sent = YES;
1.23 frystyk 735: } else {
1.93 frystyk 736: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 737: if (status == HT_WOULD_BLOCK)
738: return HT_WOULD_BLOCK;
739: else if (status == HT_LOADED) {
740: int code = ctrl->repcode/100;
741: if (code == 2) /* Logged in with account */
742: ctrl->substate = SUB_SUCCESS;
743: else
744: ctrl->substate = SUB_ERROR; /* hopeless */
745: } else
746: ctrl->substate = SUB_ERROR;
747: ctrl->sent = NO;
1.1 timbl 748: }
1.60 frystyk 749: break;
1.1 timbl 750:
1.60 frystyk 751: case PROMPT_USER:
1.95 frystyk 752: if (PROT_TRACE) HTTrace("FTP Login.. now in state PROMPT_USER\n");
1.60 frystyk 753: {
1.70 frystyk 754: HTAlertCallback *cbf = HTAlert_find(HT_A_USER_PW);
755: HTAlertPar * reply = HTAlert_newReply();
1.77 frystyk 756: HT_FREE(ctrl->uid);
757: HT_FREE(ctrl->passwd);
1.87 frystyk 758: if (cbf && (*cbf)(request, HT_A_USER_PW, HT_MSG_FTP_UID,
759: NULL, NULL, reply)){
1.70 frystyk 760: ctrl->uid = HTAlert_replyMessage(reply);
761: ctrl->passwd = HTAlert_replySecret(reply);
762: }
763: HTAlert_deleteReply(reply);
1.66 frystyk 764: if (ctrl->uid && *ctrl->uid && ctrl->passwd && *ctrl->passwd)
1.60 frystyk 765: ctrl->substate = NEED_UID;
766: else
767: ctrl->substate = SUB_ERROR;
768: }
769: break;
1.1 timbl 770:
1.60 frystyk 771: case SUB_ERROR:
1.95 frystyk 772: if (PROT_TRACE) HTTrace("FTP Login.. now in state SUB_ERROR\n");
773: HTRequest_addError(request, ERR_FATAL, NO,
774: HTERR_FTP_LOGIN_FAILURE, NULL, 0, "HTFTPLogin");
775: if (PROT_TRACE) HTTrace("FTP......... Login failed\n");
1.60 frystyk 776: ctrl->substate = 0;
777: return HT_ERROR;
778: break;
1.23 frystyk 779:
1.60 frystyk 780: case SUB_SUCCESS:
1.95 frystyk 781: if (PROT_TRACE) HTTrace("FTP Login.. now in state SUB_SUCCESS\n");
782: if (PROT_TRACE) HTTrace("FTP......... Logged in as `%s\'\n", ctrl->uid);
1.60 frystyk 783: ctrl->substate = 0;
784: return HT_OK;
785: break;
1.23 frystyk 786: }
1.22 frystyk 787: }
788: }
789:
1.60 frystyk 790: /* HTFTPDataConnection
791: ** -------------------
792: ** Prepares a data connection to the server and initializes the
793: ** transfer mode.
794: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.1 timbl 795: */
1.60 frystyk 796: PRIVATE int HTFTPDataConnection (HTRequest * request, HTNet *cnet,
797: ftp_ctrl *ctrl, ftp_data *data)
1.1 timbl 798: {
1.60 frystyk 799: int status;
800: HTNet *dnet = ctrl->dnet;
801: typedef enum _state {
802: SUB_ERROR = -2,
803: SUB_SUCCESS = -1,
804: NEED_TYPE = 0,
805: NEED_SELECT,
806: NEED_PASV,
807: NEED_PORT
808: } state;
809:
810: /* Jump into a second level state machine */
811: while (1) {
812: switch ((state) ctrl->substate) {
813: case NEED_TYPE:
1.95 frystyk 814: if (PROT_TRACE) HTTrace("FTP Data.... now in state NEED_TYPE\n");
1.60 frystyk 815: if(!data->type|| data->pasv || data->type=='N' || data->type=='L'){
816: ctrl->substate = NEED_SELECT;
817: break;
818: }
819: if (!ctrl->sent) {
820: char type[2];
821: *type = data->type;
822: *(type+1) = '\0';
823: status = SendCommand(request, ctrl, "TYPE", type);
824: if (status == HT_WOULD_BLOCK)
825: return HT_WOULD_BLOCK;
826: else if (status == HT_ERROR)
827: ctrl->substate = SUB_ERROR;
828: ctrl->sent = YES;
829: } else {
1.93 frystyk 830: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 831: if (status == HT_WOULD_BLOCK)
832: return HT_WOULD_BLOCK;
833: else if (status == HT_LOADED) {
834: if (ctrl->repcode/100 == 2)
835: ctrl->substate = NEED_SELECT;
836: else
837: ctrl->substate = SUB_ERROR;
838: } else
839: ctrl->substate = SUB_ERROR;
840: ctrl->sent = NO;
841: }
842: break;
843:
844: case NEED_SELECT:
1.95 frystyk 845: if (PROT_TRACE) HTTrace("FTP Data.... now in state NEED_SELECT\n");
1.60 frystyk 846: if (FTPMode & FTP_DATA_PASV && !data->pasv)
847: ctrl->substate = NEED_PASV;
848: else if (ListenSocket(cnet, dnet, data))
849: ctrl->substate = NEED_PORT;
850: else
851: ctrl->substate = SUB_ERROR;
852: break;
853:
854: case NEED_PASV:
1.95 frystyk 855: if (PROT_TRACE) HTTrace("FTP Data.... now in state NEED_PASV\n");
1.60 frystyk 856: if (!ctrl->sent) {
857: status = SendCommand(request, ctrl, "PASV", NULL);
858: if (status == HT_WOULD_BLOCK)
859: return HT_WOULD_BLOCK;
860: else if (status == HT_ERROR)
861: ctrl->substate = SUB_ERROR;
862: ctrl->sent = YES;
863: } else {
1.93 frystyk 864: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 865: if (status == HT_WOULD_BLOCK)
866: return HT_WOULD_BLOCK;
867: else if (status == HT_LOADED) {
868: if (ctrl->repcode == 227) {
869: /*
870: ** If succes, we have to scan for the returned number.
871: ** As the format for the response isn't standard,
872: ** the best thing to do is to scan for the first digit
873: ** after the status code, see RFC1123
874: */
875: char *host = ctrl->reply;
876: int h0, h1, h2, h3, p0=0, p1=0;
1.94 frystyk 877: while (*host && !isdigit((int) *host++));
1.60 frystyk 878: if (!*host || sscanf(--host, "%d,%d,%d,%d,%d,%d",
879: &h0,&h1,&h2,&h3,&p0,&p1) < 6) {
880: if (PROT_TRACE)
1.95 frystyk 881: HTTrace("FTP Data.... PASV No addr\n");
1.60 frystyk 882: ctrl->substate = SUB_ERROR;
883: break;
884: } else {
885: int port = (p0<<8)+p1;
886: sprintf(data->host, "ftp://%d.%d.%d.%d:%d/",
887: h0, h1, h2, h3, port);
888: data->pasv = YES;
889: ctrl->substate = SUB_SUCCESS;
890: }
891: } else {
892: ctrl->substate = ListenSocket(cnet, dnet, data) ?
893: NEED_PORT : SUB_ERROR;
894: }
895: } else
896: ctrl->substate = SUB_ERROR;
897: ctrl->sent = NO;
898: }
899: break;
1.22 frystyk 900:
1.60 frystyk 901: case NEED_PORT:
1.95 frystyk 902: if (PROT_TRACE) HTTrace("FTP Data.... now in state NEED_PORT\n");
1.60 frystyk 903: if (!ctrl->sent) {
904: status = SendCommand(request, ctrl, "PORT", data->host);
905: if (status == HT_WOULD_BLOCK)
906: return HT_WOULD_BLOCK;
907: else if (status == HT_ERROR)
908: ctrl->substate = SUB_ERROR;
909: ctrl->sent = YES;
910: } else {
1.93 frystyk 911: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 912: if (status == HT_WOULD_BLOCK)
913: return HT_WOULD_BLOCK;
914: else if (status == HT_LOADED) {
915: data->pasv = NO;
916: ctrl->substate = (ctrl->repcode/100 == 2) ?
917: SUB_SUCCESS : SUB_ERROR;
918: } else
919: ctrl->substate = SUB_ERROR;
920: ctrl->sent = NO;
921: }
922: break;
1.1 timbl 923:
1.60 frystyk 924: case SUB_ERROR:
1.95 frystyk 925: if (PROT_TRACE) HTTrace("FTP Data.... now in state SUB_ERROR\n");
1.60 frystyk 926: if (PROT_TRACE)
1.95 frystyk 927: HTTrace("FTP Data.... Can't setup data connection\n");
1.60 frystyk 928: ctrl->substate = 0;
929: return HT_ERROR;
930: break;
1.1 timbl 931:
1.60 frystyk 932: case SUB_SUCCESS:
1.95 frystyk 933: if (PROT_TRACE) HTTrace("FTP Data.... now in state SUB_SUCCESS\n");
1.60 frystyk 934: if (PROT_TRACE)
1.95 frystyk 935: HTTrace("FTP Data.... Data connection negotiated\n");
1.60 frystyk 936: ctrl->substate = 0;
937: return HT_OK;
938: break;
1.23 frystyk 939: }
1.58 frystyk 940: }
1.23 frystyk 941: }
1.1 timbl 942:
943:
1.60 frystyk 944: /* HTFTPServerInfo
945: ** ---------------
946: ** This function finds out what server we are talking to.
947: ** Maybe we can upgrade from NLST to LIST.
948: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
949: ** Thanks to James.W.Matthews@Dartmouth.EDU (James W. Matthews) for making
950: ** his code available.
1.1 timbl 951: */
1.60 frystyk 952: PRIVATE int HTFTPServerInfo (HTRequest *request, HTNet *cnet,
953: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 954: {
1.60 frystyk 955: int status;
956: typedef enum _state {
957: SUB_ERROR = -2,
958: SUB_SUCCESS = -1,
959: NEED_SYST = 0,
960: CHECK_SYST,
961: NEED_PWD,
962: CHECK_PWD
963: } state;
964:
965: /* Jump into a second level state machine */
966: while (1) {
967: switch ((state) ctrl->substate) {
968: case NEED_SYST:
1.95 frystyk 969: if (PROT_TRACE) HTTrace("FTP Server.. now in state NEED_SYST\n");
1.60 frystyk 970: if (!ctrl->sent) {
1.63 frystyk 971: if (ctrl->server != FTP_UNSURE) {
1.60 frystyk 972: FTPListType(data, ctrl->server);
973: return HT_OK;
974: }
975: status = SendCommand(request, ctrl, "SYST", NULL);
976: if (status == HT_WOULD_BLOCK)
977: return HT_WOULD_BLOCK;
978: else if (status == HT_ERROR)
979: ctrl->substate = SUB_ERROR;
980: ctrl->sent = YES;
981: } else {
1.93 frystyk 982: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 983: if (status == HT_WOULD_BLOCK)
984: return HT_WOULD_BLOCK;
985: else if (status == HT_LOADED) {
986: ctrl->substate=ctrl->repcode==215 ? CHECK_SYST : NEED_PWD;
987: } else
988: ctrl->substate = SUB_ERROR;
989: ctrl->sent = NO;
1.23 frystyk 990: }
991: break;
992:
1.60 frystyk 993: case CHECK_SYST:
1.95 frystyk 994: if (PROT_TRACE) HTTrace("FTP Server.. now in state CHECK_SYST\n");
1.23 frystyk 995: {
1.60 frystyk 996: char *reply = ctrl->reply;
997: if (!*reply) {
1.43 frystyk 998: if (PROT_TRACE)
1.95 frystyk 999: HTTrace("FTP Server.. No server info?\n");
1.60 frystyk 1000: ctrl->substate = NEED_PWD;
1.23 frystyk 1001: break;
1002: }
1.60 frystyk 1003: if (strncmp(reply, "UNIX Type: L8MAC-OSMachTen", 28) == 0) {
1004: ctrl->server = FTP_MACHTEN;
1005: } else if (strstr(reply, "UNIX") != NULL) {
1006: ctrl->server = FTP_UNIX;
1007: } else if (strncmp(reply, "VMS", 3) == 0) {
1008: ctrl->server = FTP_VMS;
1009: } else if ((strncmp(reply, "VM/CMS", 6) == 0) ||
1010: (strncmp(reply, "VM", 2) == 0)) {
1011: ctrl->server = FTP_CMS;
1012: } else if (strncmp(reply, "DCTS", 4) == 0) {
1013: ctrl->server = FTP_DCTS;
1014: } else if (strstr(reply, "MAC-OS TCP/ConnectII") != NULL) {
1.23 frystyk 1015: /* Check old versions of TCP/C using / in pathnames */
1.63 frystyk 1016: ctrl->server = FTP_TCPC + FTP_UNSURE;
1.60 frystyk 1017: } else if (strncmp(reply, "MACOS Peter's Server", 20) == 0) {
1018: ctrl->server = FTP_PETER_LEWIS;
1019: } else if (strncmp(reply, "Windows_NT", 10) == 0) {
1020: ctrl->server = FTP_WINNT;
1.23 frystyk 1021: }
1022:
1023: /* If we are unsure, try PWD to get more information */
1.60 frystyk 1024: if (ctrl->server & FTP_UNSURE)
1025: ctrl->substate = NEED_PWD;
1.23 frystyk 1026: else
1.60 frystyk 1027: ctrl->substate = SUB_SUCCESS;
1.1 timbl 1028: }
1.23 frystyk 1029: break;
1030:
1031: case NEED_PWD:
1.95 frystyk 1032: if (PROT_TRACE) HTTrace("FTP Server.. now in state NEED_PWD\n");
1.60 frystyk 1033: if (!ctrl->sent) {
1034: status = SendCommand(request, ctrl, "PWD", NULL);
1035: if (status == HT_WOULD_BLOCK)
1036: return HT_WOULD_BLOCK;
1037: else if (status == HT_ERROR)
1038: ctrl->substate = SUB_ERROR;
1039: ctrl->sent = YES;
1.23 frystyk 1040: } else {
1.93 frystyk 1041: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 1042: if (status == HT_WOULD_BLOCK)
1043: return HT_WOULD_BLOCK;
1044: else if (status == HT_LOADED) {
1045: ctrl->substate = (ctrl->repcode/100 == 2) ?
1046: CHECK_PWD : SUB_ERROR;
1047: } else
1048: ctrl->substate = SUB_ERROR;
1049: ctrl->sent = NO;
1.23 frystyk 1050: }
1051: break;
1052:
1.60 frystyk 1053: case CHECK_PWD:
1.95 frystyk 1054: if (PROT_TRACE) HTTrace("FTP Server.. now in state CHECK_PWD\n");
1.60 frystyk 1055: {
1056: char *start = strchr(ctrl->reply, '"');
1057: char *end;
1058: if (!start || (end = strchr(++start, '"')) == NULL) {
1.43 frystyk 1059: if (PROT_TRACE)
1.95 frystyk 1060: HTTrace("FTP Server.. No current directory?\n");
1.60 frystyk 1061: ctrl->server = FTP_GENERIC;
1.23 frystyk 1062: } else {
1.60 frystyk 1063: *end = '\0';
1.63 frystyk 1064: if (ctrl->server & FTP_TCPC) {
1.60 frystyk 1065: ctrl->server = *start == '/' ? FTP_NCSA : FTP_TCPC;
1066: } else if (*start == '/') {
1067: /* path names starting with / imply Unix, right? */
1068: ctrl->server = FTP_UNIX;
1069: } else if (*(end-1) == ']') {
1070: /* path names ending with ] imply VMS, right? */
1071: ctrl->server = FTP_VMS;
1072: } else
1073: ctrl->server = FTP_GENERIC;
1.23 frystyk 1074: }
1.60 frystyk 1075: ctrl->substate = SUB_SUCCESS;
1.1 timbl 1076: }
1.23 frystyk 1077: break;
1.1 timbl 1078:
1.60 frystyk 1079: case SUB_ERROR:
1.95 frystyk 1080: if (PROT_TRACE) HTTrace("FTP Server.. now in state SUB_ERROR\n");
1.60 frystyk 1081: if (PROT_TRACE)
1.95 frystyk 1082: HTTrace("FTP Server.. Can't get server information\n");
1.60 frystyk 1083: ctrl->substate = 0;
1.63 frystyk 1084: ctrl->server = FTP_GENERIC;
1.60 frystyk 1085: return HT_ERROR;
1.23 frystyk 1086: break;
1.22 frystyk 1087:
1.60 frystyk 1088: case SUB_SUCCESS:
1.95 frystyk 1089: if (PROT_TRACE) HTTrace("FTP Server.. now in state SUB_SUCCESS\n");
1090: {
1.81 frystyk 1091: HTHost * host = HTNet_host(cnet);
1092: if (PROT_TRACE)
1093: HTTrace("FTP Server.. Guessed type %d\n", ctrl->server);
1094: HTHost_setVersion(host, ctrl->server);
1095: FTPListType(data, ctrl->server);
1096: ctrl->substate = 0;
1097: return HT_OK;
1098: break;
1.95 frystyk 1099: }
1.22 frystyk 1100: }
1.23 frystyk 1101: }
1102: }
1103:
1.60 frystyk 1104: /* HTFTPGetData
1105: ** ------------
1106: ** This function asks for the file or a directory. First we try in one go,
1.23 frystyk 1107: ** but if that doesn't work, then we use CWD for each segment and then
1108: ** try to retrieve it. If that also fails, then we try if it is a
1.60 frystyk 1109: ** directory.
1110: ** Returns HT_OK, HT_LOADED, HT_ERROR, or HT_WOULD_BLOCK
1.23 frystyk 1111: */
1.71 frystyk 1112: PRIVATE int HTFTPGetData (HTRequest *request, HTNet *cnet, SOCKET sockfd,
1.60 frystyk 1113: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 1114: {
1115: int status;
1.60 frystyk 1116: char *segment = NULL;
1117: HTNet *dnet = ctrl->dnet;
1.93 frystyk 1118: BOOL data_is_active = (sockfd == HTNet_socket(dnet));
1.60 frystyk 1119: typedef enum _state {
1120: SUB_ERROR = -2,
1121: SUB_SUCCESS = -1,
1122: NEED_SELECT = 0,
1123: NEED_CONNECT,
1124: NEED_ACCEPT,
1125: NEED_ACTION,
1126: NEED_CWD,
1127: NEED_SEGMENT,
1128: NEED_STREAM,
1.63 frystyk 1129: NEED_BODY
1.60 frystyk 1130: } state;
1131:
1132: /* Jump into a second level state machine */
1133: while (1) {
1134: switch ((state) ctrl->substate) {
1135: case NEED_SELECT:
1.95 frystyk 1136: if (PROT_TRACE) HTTrace("FTP Get Data now in state NEED_SELECT\n");
1.60 frystyk 1137: ctrl->substate = data->pasv ? NEED_CONNECT : NEED_ACTION;
1138: break;
1139:
1140: case NEED_CONNECT:
1.95 frystyk 1141: if (PROT_TRACE) HTTrace("FTP Get Data now in state NEED_CONNECT\n");
1.93 frystyk 1142: status = HTHost_connect(HTNet_host(dnet), dnet, data->host, FTP_DATA);
1.60 frystyk 1143: if (status == HT_WOULD_BLOCK)
1144: return HT_WOULD_BLOCK;
1145: else if (status == HT_OK) {
1146: if (PROT_TRACE)
1.95 frystyk 1147: HTTrace("FTP Get Data.... Active data socket %d\n",
1148: HTNet_socket(dnet));
1.93 frystyk 1149: #if 0
1.92 eric 1150: /* HTNet_setPersistent(dnet, YES, HT_TP_INTERLEAVE); */
1151: HTNet_setPersistent(dnet, YES, HT_TP_SINGLE);
1.93 frystyk 1152: #endif
1.60 frystyk 1153: ctrl->substate = NEED_ACTION;
1.81 frystyk 1154: } else { /* Swap to PORT on the fly */
1.91 frystyk 1155: NETCLOSE(HTNet_socket(dnet));
1156: HTNet_setSocket(dnet, INVSOC);
1.60 frystyk 1157: if (PROT_TRACE)
1.95 frystyk 1158: HTTrace("FTP Get Data Swap to PORT on the fly\n");
1.89 frystyk 1159: ctrl->substate = NEED_SELECT;
1.77 frystyk 1160: HT_FREE(segment);
1.60 frystyk 1161: return HT_OK;
1162: }
1.23 frystyk 1163: break;
1164:
1.60 frystyk 1165: case NEED_ACCEPT:
1.95 frystyk 1166: if (PROT_TRACE) HTTrace("FTP Get Data now in state NEED_ACCEPT\n");
1.60 frystyk 1167: {
1.86 frystyk 1168: status = HTDoAccept(ctrl->dnet, &ctrl->dnet);
1169: dnet = ctrl->dnet;
1.60 frystyk 1170: if (status == HT_WOULD_BLOCK)
1171: return HT_WOULD_BLOCK;
1172: else if (status == HT_OK) {
1173: if (PROT_TRACE)
1.95 frystyk 1174: HTTrace("FTP Get Data.... Passive data socket %d\n",
1.91 frystyk 1175: HTNet_socket(dnet));
1.60 frystyk 1176: ctrl->substate = NEED_STREAM;
1177: } else
1178: ctrl->substate = SUB_ERROR;
1.23 frystyk 1179: }
1.60 frystyk 1180: break;
1.33 frystyk 1181:
1.60 frystyk 1182: case NEED_ACTION:
1.95 frystyk 1183: if (PROT_TRACE) HTTrace("FTP Get Data now in state NEED_ACTION\n");
1.60 frystyk 1184: if (!ctrl->sent) {
1185: char *cmd = (data->type=='L') ? "LIST" :
1186: (data->type=='N') ? "NLST" : "RETR";
1187: StrAllocCopy(segment, data->offset);
1188: HTUnEscape(segment);
1189: HTCleanTelnetString(segment);
1190: status = SendCommand(request, ctrl, cmd, segment);
1.77 frystyk 1191: HT_FREE(segment);
1.60 frystyk 1192: if (status == HT_WOULD_BLOCK)
1193: return HT_WOULD_BLOCK;
1194: else if (status == HT_ERROR)
1195: ctrl->substate = SUB_ERROR;
1196: ctrl->sent = YES;
1197: } else {
1.93 frystyk 1198: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 1199: if (status == HT_WOULD_BLOCK)
1200: return HT_WOULD_BLOCK;
1201: else if (status == HT_LOADED) {
1202: int code = ctrl->repcode;
1203: if (code==125 || code==150 || code==225)
1.93 frystyk 1204: ctrl->substate = data->pasv ? NEED_STREAM : NEED_ACCEPT;
1.60 frystyk 1205: else if (code/100==5 && !ctrl->cwd)
1206: ctrl->substate = NEED_SEGMENT;
1.95 frystyk 1207: /* begin _GM_ */
1208: /* Note: libwww bug ID: GM9 */
1209: /* else */
1210: /* ctrl->substate = SUB_ERROR; */
1211: else {
1212: if (ctrl->repcode == 550) {
1213: if (PROT_TRACE) HTTrace("FTP Get Data no such file or directory\n");
1214: data->stream_error = YES;
1215: }
1216: ctrl->substate = SUB_ERROR;
1217: }
1218: /* end _GM_ */
1.60 frystyk 1219: } else
1220: ctrl->substate = SUB_ERROR;
1221: ctrl->sent = NO;
1.23 frystyk 1222: }
1223: break;
1.60 frystyk 1224:
1225: case NEED_SEGMENT:
1.95 frystyk 1226: if (PROT_TRACE) HTTrace("FTP Get Data now in state NEED_SEGMENT\n");
1.23 frystyk 1227: {
1.60 frystyk 1228: char *ptr;
1229: if (data->offset == data->file) {
1.63 frystyk 1230: if (ctrl->server == FTP_VMS) { /* Change to root */
1.77 frystyk 1231: if ((segment = (char *) HT_MALLOC(strlen(ctrl->uid)+3)) == NULL)
1232: HT_OUTOFMEM("segment ");
1.63 frystyk 1233: sprintf(segment, "[%s]", ctrl->uid);
1234: } else
1235: StrAllocCopy(segment, "/");
1.60 frystyk 1236: data->offset++;
1237: ctrl->substate = NEED_CWD;
1238: } else {
1239: if ((ptr = strchr(data->offset, '/'))) {
1240: *ptr='\0';
1241: StrAllocCopy(segment, data->offset);
1242: *ptr='/';
1243: data->offset = ++ptr;
1244: HTUnEscape(segment);
1245: HTCleanTelnetString(segment);
1246: ctrl->substate = NEED_CWD;
1.33 frystyk 1247: } else
1.60 frystyk 1248: ctrl->substate = NEED_ACTION;
1.23 frystyk 1249: }
1250: }
1251: break;
1252:
1.60 frystyk 1253: case NEED_CWD:
1.95 frystyk 1254: if (PROT_TRACE) HTTrace("FTP Get Data now in state NEED_CWD\n");
1.60 frystyk 1255: if (!ctrl->sent) {
1256: status = SendCommand(request, ctrl, "CWD", segment);
1.77 frystyk 1257: HT_FREE(segment);
1.60 frystyk 1258: if (status == HT_WOULD_BLOCK)
1259: return HT_WOULD_BLOCK;
1260: else if (status == HT_ERROR)
1261: ctrl->substate = SUB_ERROR;
1262: ctrl->cwd = YES;
1263: ctrl->sent = YES;
1264: } else {
1.93 frystyk 1265: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 1266: if (status == HT_WOULD_BLOCK)
1267: return HT_WOULD_BLOCK;
1268: else if (status == HT_LOADED) {
1269: if (ctrl->repcode/100 == 2)
1270: ctrl->substate = NEED_SEGMENT;
1271: else
1272: ctrl->substate = SUB_ERROR;
1273: } else
1274: ctrl->substate = SUB_ERROR;
1275: ctrl->sent = NO;
1.33 frystyk 1276: }
1.60 frystyk 1277: break;
1.33 frystyk 1278:
1.81 frystyk 1279: case NEED_STREAM:
1.95 frystyk 1280: if (PROT_TRACE) HTTrace("FTP Get Data now in state NEED_STREAM\n");
1.81 frystyk 1281: /*
1282: ** Create the stream pipe FROM the channel to the application.
1283: ** The target for the input stream pipe is set up using the
1284: ** stream stack.
1285: */
1.93 frystyk 1286: {
1287: HTStream * target = FTP_DIR(data) ?
1288: HTFTPDir_new(request, ctrl->server, data->type) :
1289: HTStreamStack(HTAnchor_format(HTRequest_anchor(request)),
1290: HTRequest_outputFormat(request),
1291: HTRequest_outputStream(request),
1292: request, YES);
1293: HTNet_setReadStream(dnet, target);
1.81 frystyk 1294: }
1.86 frystyk 1295: HTRequest_setOutputConnected(request, YES);
1.93 frystyk 1296: data_is_active = YES;
1.81 frystyk 1297: ctrl->substate = NEED_BODY;
1.91 frystyk 1298: break;
1.23 frystyk 1299:
1.60 frystyk 1300: case NEED_BODY:
1.95 frystyk 1301: if (PROT_TRACE) HTTrace("FTP Get Data now in state NEED_BODY\n");
1.93 frystyk 1302: if (data_is_active) {
1303: status = HTHost_read(HTNet_host(dnet), dnet);
1304: if (status == HT_WOULD_BLOCK)
1305: return HT_WOULD_BLOCK;
1306: else if (status == HT_LOADED || status == HT_CLOSED) {
1307: data->complete |= 1;
1308: if (data->complete >= 3)
1309: ctrl->substate = SUB_SUCCESS;
1310: else
1311: data_is_active = NO;
1312: } else {
1313: ctrl->substate = SUB_ERROR;
1314: data->stream_error = YES;
1315: }
1316: } else {
1317: status = HTHost_read(HTNet_host(cnet), cnet);
1318: if (status == HT_WOULD_BLOCK)
1319: return HT_WOULD_BLOCK;
1320: else if (status == HT_LOADED || status == HT_CLOSED) {
1321: if (ctrl->repcode/100 == 2) {
1322: data->complete |= 2;
1323: if (data->complete >= 3)
1324: ctrl->substate = SUB_SUCCESS;
1325: else
1326: data_is_active = YES;
1327: } else
1328: ctrl->substate = SUB_ERROR;
1329: } else
1330: ctrl->substate = SUB_ERROR;
1331: }
1332: break;
1.22 frystyk 1333:
1.60 frystyk 1334: case SUB_ERROR:
1.95 frystyk 1335: if (PROT_TRACE) HTTrace("FTP Get Data now in state SUB_ERROR\n");
1336: HTRequest_addError(request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1337: NULL, 0, "HTFTPGetData");
1.60 frystyk 1338: ctrl->substate = 0;
1.77 frystyk 1339: HT_FREE(segment);
1.60 frystyk 1340: return HT_ERROR;
1.23 frystyk 1341: break;
1342:
1.60 frystyk 1343: case SUB_SUCCESS:
1.95 frystyk 1344: if (PROT_TRACE) HTTrace("FTP Get Data now in state SUB_SUCCESS\n");
1.60 frystyk 1345: ctrl->substate = 0;
1.77 frystyk 1346: HT_FREE(segment);
1.60 frystyk 1347: return HT_LOADED;
1.23 frystyk 1348: break;
1.1 timbl 1349: }
1350: }
1.23 frystyk 1351: }
1.1 timbl 1352:
1.23 frystyk 1353: /* ------------------------------------------------------------------------- */
1354:
1355: /* Retrieve File from Server as an atomic action.
1356: ** -----------------------------------------------
1.58 frystyk 1357: ** Given a hypertext address, this routine loads a document.
1.23 frystyk 1358: **
1359: ** On entry,
1.58 frystyk 1360: ** request This is the request structure
1361: ** returns HT_ERROR Error has occured in call back
1362: ** HT_OK Call back was OK
1363: */
1.91 frystyk 1364: PRIVATE int FTPEvent (SOCKET soc, void * pVoid, HTEventType type);
1365:
1366: PUBLIC int HTLoadFTP (SOCKET soc, HTRequest * request)
1.58 frystyk 1367: {
1.84 frystyk 1368: HTNet * cnet = HTRequest_net(request);
1369: ftp_ctrl * ctrl = NULL;
1370: ftp_data * data = NULL;
1371: HTParentAnchor * anchor = HTRequest_anchor(request);
1372: char * url = HTAnchor_physical(anchor);
1.23 frystyk 1373:
1.97 frystyk 1374:
1.58 frystyk 1375: /*
1.60 frystyk 1376: ** Initiate a new FTP ctrl and data structure and bind to request structure
1.58 frystyk 1377: ** This is actually state FTP_BEGIN, but it can't be in the state
1378: ** machine as we need the structure first.
1379: */
1.91 frystyk 1380: if (PROT_TRACE) HTTrace("FTP......... Looking for `%s\'\n",url);
1381: if ((ctrl = (ftp_ctrl *) HT_CALLOC(1, sizeof(ftp_ctrl))) == NULL ||
1382: (data = (ftp_data *) HT_CALLOC(1, sizeof(ftp_data))) == NULL)
1383: HT_OUTOFMEM("HTLoadFTP");
1384: ctrl->cmd = HTChunk_new(128);
1385: ctrl->state = FTP_BEGIN;
1386: ctrl->server = FTP_UNSURE;
1387: ctrl->dnet = HTNet_dup(cnet);
1.93 frystyk 1388: ctrl->cnet = cnet;
1.91 frystyk 1389: HTNet_setContext(cnet, ctrl);
1390: HTNet_setEventCallback(cnet, FTPEvent);
1.92 eric 1391: HTNet_setEventParam(cnet, ctrl);
1.98 frystyk 1392: HTNet_setRawBytesCount(ctrl->dnet, YES);
1.97 frystyk 1393:
1.92 eric 1394: /* for now, the dnet comes back to the same place
1395: ** - vestigial from when the callback was from the request object
1396: */
1397: HTNet_setContext(ctrl->dnet, data);
1398: HTNet_setEventCallback(ctrl->dnet, FTPEvent);
1399: HTNet_setEventParam(ctrl->dnet, ctrl);
1.91 frystyk 1400: return FTPEvent(soc, ctrl, HTEvent_BEGIN);
1401: }
1402:
1403: PRIVATE int FTPEvent (SOCKET soc, void * pVoid, HTEventType type)
1404: {
1.93 frystyk 1405: ftp_ctrl * ctrl = (ftp_ctrl *) pVoid;
1406: ftp_data * data = (ftp_data *) HTNet_context(ctrl->dnet);
1.91 frystyk 1407: int status = HT_ERROR;
1.93 frystyk 1408: HTNet * cnet = ctrl->cnet;
1.91 frystyk 1409: HTRequest * request = HTNet_request(cnet);
1410: HTParentAnchor * anchor = HTRequest_anchor(request);
1411: char * url = HTAnchor_physical(anchor);
1412:
1.97 frystyk 1413: HTHost *host = HTNet_host(cnet);
1414:
1415:
1.91 frystyk 1416: if (type == HTEvent_CLOSE) { /* Interrupted */
1.98 frystyk 1417: if (soc == HTNet_socket(cnet))
1418: FTPCleanup(request, HT_INTERRUPTED);
1.60 frystyk 1419: else
1.98 frystyk 1420: FTPCleanup(request, HT_LOADED);
1421: return HT_OK;
1422: } else if (type == HTEvent_TIMEOUT) {
1423: HTRequest_addError(request, ERR_FATAL, NO, HTERR_TIME_OUT,
1424: NULL, 0, "HTLoadHTTP");
1425: FTPCleanup(request, HT_TIMEOUT);
1.60 frystyk 1426: return HT_OK;
1.98 frystyk 1427:
1.60 frystyk 1428: } else {
1.93 frystyk 1429: ctrl = (ftp_ctrl *) HTNet_context(cnet); /* Get existing copy */
1430: data = (ftp_data *) HTNet_context(ctrl->dnet);
1.60 frystyk 1431: }
1.58 frystyk 1432:
1433: /* Now jump into the machine. We know the state from the previous run */
1434: while (1) {
1435: switch (ctrl->state) {
1.60 frystyk 1436: case FTP_BEGIN:
1.95 frystyk 1437: if (PROT_TRACE) HTTrace("FTP Event... now in state FTP_BEGIN\n");
1.100 frystyk 1438:
1439: /* Only handle GET requests for now */
1440: if (HTRequest_method(request) != METHOD_GET) {
1441: if (PROT_TRACE)
1442: HTTrace("FTP Event... This module only supports the GET method\n");
1443: ctrl->state = FTP_ERROR;
1444: break;
1445: }
1446:
1.95 frystyk 1447: HTFTPParseURL(request, url, ctrl, data);
1.97 frystyk 1448:
1.95 frystyk 1449: /* The following is added by Neil Griffin, GAIN Software */
1450:
1451: /*
1452: ** If the user hasn't specified a permanent transfer type, then
1453: ** use the transfer type specified at the end of the URL.
1454: */
1455: if (g_FTPTransferMode == FTP_DEFAULT_TRANSFER_MODE) {
1456: switch (data->type) {
1457: case 'a' : data->type = 'A'; break;
1458: case 'A' : data->type = 'A'; break;
1459: case 'i' : data->type = 'I'; break;
1460: case 'I' : data->type = 'I'; break;
1461: case 'd' : FTPListType(data, ctrl->server); break;
1462: case 'D' : FTPListType(data, ctrl->server); break;
1463: default : data->type = 'I'; break;
1464: }
1465:
1466: /* Otherwise, use the permanent transfer type specified by the user. */
1467: } else {
1468: switch (g_FTPTransferMode) {
1469: case FTP_ASCII_TRANSFER_MODE : data->type = 'A'; break;
1470: case FTP_BINARY_TRANSFER_MODE : data->type = 'I'; break;
1471: case FTP_DIR_TRANSFER_MODE : FTPListType(data, ctrl->server); break;
1472: default : data->type = 'I'; break;
1473: }
1474: }
1475:
1476: if (PROT_TRACE)
1477: HTTrace("FTP Event... Transfer mode set to '%c'\n", data->type);
1478:
1479: /*
1480: ** See if we can get any hints to what we might expect content wise.
1481: */
1482: if (!FTP_DIR(data)) HTBind_getAnchorBindings(anchor);
1.98 frystyk 1483:
1484: /* Ready for next state */
1485: ctrl->state = FTP_NEED_CCON;
1486: break;
1.60 frystyk 1487:
1.95 frystyk 1488: case FTP_NEED_CCON:
1489: if (PROT_TRACE) HTTrace("FTP Event... now in state FTP_NEED_CONN\n");
1.97 frystyk 1490: status = HTHost_connect(host, cnet, url, FTP_PORT);
1491: host = HTNet_host(cnet);
1.60 frystyk 1492: if (status == HT_OK) {
1.81 frystyk 1493:
1494: /*
1495: ** Check the protocol class to see if we have connected to a
1496: ** the right class of server, in this case HTTP.
1497: */
1498: {
1499: char * s_class = HTHost_class(host);
1500: if (s_class && strcasecomp(s_class, "ftp")) {
1501: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1502: NULL, 0, "HTLoadNews");
1503: ctrl->state = FTP_ERROR;
1504: break;
1505: }
1506: HTHost_setClass(host, "ftp");
1507: }
1508:
1509: /* Check persistent connection */
1510: if (HTNet_persistent(cnet)) {
1511: ctrl->server = HTHost_version(host);
1512: if (PROT_TRACE)
1513: HTTrace("FTP Server.. Cache says type %d server\n",
1514: ctrl->server);
1515: ctrl->reset = 1;
1516: } else
1.88 frystyk 1517: HTNet_setPersistent(cnet, YES, HT_TP_SINGLE);
1.23 frystyk 1518:
1.81 frystyk 1519: /*
1520: ** Create the stream pipe FROM the channel to the application.
1521: ** The target for the input stream pipe is set up using the
1522: ** stream stack.
1523: */
1.93 frystyk 1524: {
1525: HTStream * readstream = FTPStatus_new(request, ctrl, host);
1526: HTNet_setReadStream(cnet, readstream);
1527: }
1.23 frystyk 1528:
1.60 frystyk 1529: /*
1.81 frystyk 1530: ** Create the stream pipe TO the channel from the application
1531: ** and hook it up to the request object
1532: */
1533: {
1534: HTOutputStream * output = HTNet_getOutput(cnet, NULL, 0);
1535: HTRequest_setInputStream(request, (HTStream *) output);
1536: }
1537:
1538: /*
1.60 frystyk 1539: ** Set up concurrent read/write if this request isn't the
1540: ** source for a PUT or POST. As source we don't start reading
1541: ** before all destinations are ready. If destination then
1542: ** register the input stream and get ready for read
1543: */
1544: if (HTRequest_isPostWeb(request)) {
1.93 frystyk 1545: HTEvent * event = HTNet_event(cnet);
1546: HTEvent_register(HTNet_socket(cnet), HTEvent_READ, event);
1.60 frystyk 1547: HTRequest_linkDestination(request);
1548: }
1549:
1550: ctrl->state = FTP_NEED_LOGIN;
1.88 frystyk 1551: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.60 frystyk 1552: return HT_OK;
1553: else
1554: ctrl->state = FTP_ERROR; /* Error or interrupt */
1555: break;
1556:
1557: case FTP_NEED_LOGIN:
1.95 frystyk 1558: if (PROT_TRACE) HTTrace("FTP Event... now in state FTP_NEED_LOGIN\n");
1.60 frystyk 1559: status = HTFTPLogin(request, cnet, ctrl);
1560: if (status == HT_WOULD_BLOCK) return HT_OK;
1561: ctrl->state = (status == HT_OK) ? FTP_NEED_DCON : FTP_ERROR;
1562: break;
1563:
1564: case FTP_NEED_DCON:
1.95 frystyk 1565: if (PROT_TRACE) HTTrace("FTP Event... now in state FTP_NEED_DCON\n");
1.60 frystyk 1566: status = HTFTPDataConnection(request, cnet, ctrl, data);
1567: if (status == HT_WOULD_BLOCK) return HT_OK;
1568: if (status == HT_OK)
1569: ctrl->state = (data->type=='N') ?
1570: FTP_NEED_SERVER : FTP_NEED_DATA;
1571: else
1572: ctrl->state = FTP_ERROR;
1573: break;
1574:
1575: case FTP_NEED_DATA:
1.95 frystyk 1576: if (PROT_TRACE) HTTrace("FTP Event... now in state FTP_NEED_DATA\n");
1.63 frystyk 1577: status = HTFTPGetData(request, cnet, soc, ctrl, data);
1.60 frystyk 1578: if (status == HT_WOULD_BLOCK) return HT_OK;
1579: if (status == HT_LOADED)
1580: ctrl->state = FTP_SUCCESS;
1581: else if (status == HT_OK)
1582: ctrl->state = FTP_NEED_DCON;
1.76 frystyk 1583: else if (!FTP_DIR(data) && !data->stream_error) {
1.60 frystyk 1584: FTPListType(data, ctrl->server);
1585: ctrl->state = FTP_NEED_SERVER; /* Try a dir instead? */
1586: } else
1587: ctrl->state = FTP_ERROR;
1588: break;
1.23 frystyk 1589:
1.60 frystyk 1590: case FTP_NEED_SERVER:
1.95 frystyk 1591: if (PROT_TRACE) HTTrace("FTP Event... now in state FTP_NEED_SERVER\n");
1.60 frystyk 1592: status = HTFTPServerInfo(request, cnet, ctrl, data);
1.95 frystyk 1593: if (status == HT_WOULD_BLOCK) return HT_OK;
1.60 frystyk 1594: ctrl->state = FTP_NEED_DATA;
1595: break;
1596:
1597: case FTP_SUCCESS:
1.95 frystyk 1598: if (PROT_TRACE) HTTrace("FTP Event... now in state FTP_SUCCESS\n");
1599: FTPCleanup(request, HT_LOADED);
1.60 frystyk 1600: return HT_OK;
1601: break;
1602:
1603: case FTP_ERROR:
1.95 frystyk 1604: if (PROT_TRACE) HTTrace("FTP Event... now in state FTP_ERROR\n");
1605: FTPCleanup(request, HT_ERROR);
1.60 frystyk 1606: return HT_OK;
1607: break;
1.23 frystyk 1608: }
1.60 frystyk 1609: } /* End of while(1) */
1.23 frystyk 1610: }
1.22 frystyk 1611:
1.95 frystyk 1612: PUBLIC void HTFTP_setTransferMode(FTPTransferMode mode)
1613: {
1614: g_FTPTransferMode = mode;
1615: }
1616:
1617: PUBLIC FTPTransferMode HTFTP_transferMode (void)
1618: {
1619: return g_FTPTransferMode;
1.97 frystyk 1620: }
1621:
1622: PUBLIC void HTFTP_setControlMode (FTPControlMode mode)
1623: {
1624: g_FTPControlMode = mode;
1625: }
1626:
1627: PUBLIC FTPControlMode HTFTP_controlMode (void)
1628: {
1629: return g_FTPControlMode;
1.95 frystyk 1630: }
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