Annotation of libwww/Library/src/HTFTP.c, revision 1.104
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.
1.104 ! frystyk 6: ** @(#) $Id: HTFTP.c,v 1.103 1999/04/12 15:01:21 frystyk Exp $
1.1 timbl 7: **
8: ** A cache of control connections is kept.
9: **
1.104 ! frystyk 10: ** Note: Port allocation (not used anymore)
1.1 timbl 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:
1.60 frystyk 75: #ifndef FTP_PORT
76: #define FTP_PORT 21
77: #define FTP_DATA 20
1.1 timbl 78: #endif
1.60 frystyk 79:
80: #define WWW_FTP_CLIENT "libwww@" /* If can't get user-info, use this */
81: #define FTP_DIR(me) ((me)->type=='L' || (me)->type=='N')
1.1 timbl 82:
1.58 frystyk 83: /*
84: ** Local context structure used in the HTNet object.
85: */
1.45 frystyk 86: typedef enum _HTFTPState {
1.60 frystyk 87: FTP_SUCCESS = -2,
88: FTP_ERROR = -1,
1.58 frystyk 89: FTP_BEGIN = 0,
90: FTP_NEED_CCON, /* Control connection */
1.60 frystyk 91: FTP_NEED_LOGIN,
1.58 frystyk 92: FTP_NEED_DCON, /* Data connection */
1.60 frystyk 93: FTP_NEED_DATA,
94: FTP_NEED_SERVER /* For directory listings */
1.39 frystyk 95: } HTFTPState;
96:
1.58 frystyk 97: typedef struct _ftp_ctrl {
1.60 frystyk 98: HTChunk * cmd;
99: int repcode;
100: char * reply;
101: char * uid;
1.58 frystyk 102: char * passwd;
1.60 frystyk 103: char * account;
1.58 frystyk 104: HTFTPState state; /* State of the connection */
1.60 frystyk 105: int substate; /* For hierarchical states */
106: BOOL sent; /* Read or write command */
107: BOOL cwd; /* Done cwd */
108: BOOL reset; /* Expect greeting */
1.63 frystyk 109: FTPServerType server; /* Type of server */
1.93 frystyk 110: HTNet * cnet; /* Control connection */
1.60 frystyk 111: HTNet * dnet; /* Data connection */
1.95 frystyk 112: BOOL alreadyLoggedIn;
1.58 frystyk 113: } ftp_ctrl;
1.39 frystyk 114:
1.58 frystyk 115: typedef struct _ftp_data {
1.60 frystyk 116: char host[30]; /* Host to contact for data */
117: char * file; /* File or dir name */
118: char * offset; /* offset into file */
119: BOOL pasv; /* Active or passive */
120: char type; /* 'A', 'I', 'L'(IST), 'N'(LST) */
1.93 frystyk 121: int complete; /* Check if both ctrl and data is loaded */
1.76 frystyk 122: BOOL stream_error;
1.58 frystyk 123: } ftp_data;
1.39 frystyk 124:
1.60 frystyk 125: struct _HTStream {
1.79 frystyk 126: const HTStreamClass * isa;
1.60 frystyk 127: HTStream * target;
128: HTRequest * request;
129: ftp_ctrl * ctrl;
1.80 frystyk 130: HTEOLState state;
1.60 frystyk 131: HTChunk * welcome;
1.62 frystyk 132: BOOL junk; /* For too long lines */
1.60 frystyk 133: BOOL first_line;
1.63 frystyk 134: char buffer[MAX_FTP_LINE+1];
1.60 frystyk 135: int buflen;
1.92 eric 136: HTHost * host;
1.60 frystyk 137: };
138:
1.81 frystyk 139: struct _HTInputStream {
140: const HTInputStreamClass * isa;
141: };
142:
1.104 ! frystyk 143: /* Determine whether we should use passive or active data TCP connections */
1.60 frystyk 144: typedef enum _FTPDataCon {
145: FTP_DATA_PASV = 0x1,
146: FTP_DATA_PORT = 0x2
147: } FTPDataCon;
148:
1.104 ! frystyk 149: PRIVATE FTPDataCon FTPMode = FTP_DATA_PORT;
1.39 frystyk 150:
1.95 frystyk 151: /* Added by Neil Griffin */
152: PRIVATE FTPTransferMode g_FTPTransferMode = FTP_DEFAULT_TRANSFER_MODE;
1.97 frystyk 153: PRIVATE FTPControlMode g_FTPControlMode = FTP_DEFAULT_CONTROL_MODE;
1.95 frystyk 154:
1.23 frystyk 155: /* ------------------------------------------------------------------------- */
1.60 frystyk 156: /* FTP Status Line Stream */
1.22 frystyk 157: /* ------------------------------------------------------------------------- */
1.60 frystyk 158:
159: /* FTPCleanup
160: ** ----------
161: ** This function closes the connection and frees memory.
162: ** Returns YES on OK, else NO
163: */
1.65 frystyk 164: PRIVATE int FTPCleanup (HTRequest * request, int status)
1.60 frystyk 165: {
1.75 frystyk 166: if (request) {
1.84 frystyk 167: HTNet * cnet = HTRequest_net(request);
168: ftp_ctrl * ctrl = (ftp_ctrl *) HTNet_context(cnet);
169: HTStream * input = HTRequest_inputStream(request);
1.98 frystyk 170:
171: if (status == HT_INTERRUPTED) {
172: HTAlertCallback * cbf = HTAlert_find(HT_PROG_INTERRUPT);
173: if (cbf) (*cbf)(request, HT_PROG_INTERRUPT,
174: HT_MSG_NULL, NULL, NULL, NULL);
175: } else if (status == HT_TIMEOUT) {
176: HTAlertCallback * cbf = HTAlert_find(HT_PROG_TIMEOUT);
177: if (cbf) (*cbf)(request, HT_PROG_TIMEOUT,
178: HT_MSG_NULL, NULL, NULL, NULL);
179: } else if (status == HT_LOADED) {
180: HTAlertCallback * cbf = HTAlert_find(HT_PROG_DONE);
181: if (cbf) (*cbf)(request, HT_PROG_DONE,
182: HT_MSG_NULL, NULL, NULL, NULL);
183: }
184:
1.93 frystyk 185: /* Free control stream with data TO network */
1.84 frystyk 186: if (!HTRequest_isDestination(request) && input) {
1.75 frystyk 187: if (status == HT_INTERRUPTED)
1.84 frystyk 188: (*input->isa->abort)(input, NULL);
1.75 frystyk 189: else
1.84 frystyk 190: (*input->isa->_free)(input);
1.75 frystyk 191: }
192:
1.104 ! frystyk 193: /* Remove the request object and our own context structure for ftp */
1.84 frystyk 194: if (cnet && ctrl) {
1.75 frystyk 195: HTNet * dnet = ctrl->dnet;
1.84 frystyk 196: ftp_data * data = (ftp_data *) HTNet_context(dnet);
1.75 frystyk 197: HTChunk_delete(ctrl->cmd);
1.77 frystyk 198: HT_FREE(ctrl->reply);
199: HT_FREE(ctrl->uid);
200: HT_FREE(ctrl->passwd);
201: HT_FREE(ctrl->account);
202: HT_FREE(ctrl);
1.84 frystyk 203: if (dnet && data) {
1.77 frystyk 204: HT_FREE(data->file);
205: HT_FREE(data);
1.75 frystyk 206: }
1.104 ! frystyk 207:
1.98 frystyk 208: /* See if we got a content length */
209: if (status == HT_LOADED)
210: HTAnchor_setLength(HTRequest_anchor(request), HTNet_bytesRead(dnet));
211:
1.104 ! frystyk 212: /* Delete the data net object */
! 213: HTChannel_deleteInput(HTNet_channel(dnet), status);
! 214: HTChannel_deleteOutput(HTNet_channel(dnet), status);
! 215: HTNet_delete(dnet, HT_IGNORE);
! 216:
1.75 frystyk 217: }
218: HTNet_delete(cnet, status);
219: return YES;
1.60 frystyk 220: }
1.75 frystyk 221: return NO;
1.60 frystyk 222: }
223:
224: /* ScanResponse
225: ** ------------
226: ** Analyzes the response from the FTP server.
227: ** Returns HT_LOADED if OK, HT_OK if more, HT_ERROR if error
228: ** the control connection.
1.33 frystyk 229: */
1.65 frystyk 230: PRIVATE int ScanResponse (HTStream * me)
1.33 frystyk 231: {
1.60 frystyk 232: int reply = 0;
233: char cont = '\0';
234: char *ptr = me->buffer+4;
235: *(me->buffer+me->buflen) = '\0';
1.95 frystyk 236: /* begin _GM_ */
237: /* Note: libwww bug ID: GM3 */
238: me->ctrl->alreadyLoggedIn = NO;
239: /* end _GM_ */
1.94 frystyk 240: if (isdigit((int) *(me->buffer))) sscanf(me->buffer, "%d%c", &reply, &cont);
1.60 frystyk 241: if (me->first_line) {
1.102 frystyk 242: HTTRACE(PROT_TRACE, "FTP Rx...... `%s\'\n" _ me->buffer);
1.60 frystyk 243: if (!reply) return HT_ERROR;
244: me->first_line = NO;
245: me->ctrl->repcode = reply;
246: StrAllocCopy(me->ctrl->reply, ptr);
1.95 frystyk 247: /* begin _GM_ */
248: /* Note: libwww bug ID: GM3 */
1.103 frystyk 249: if ( (reply == 530) && (HTStrCaseStr(me->buffer, "already") != NULL) ) {
1.95 frystyk 250: me->ctrl->alreadyLoggedIn = YES;
251: } else {
252: me->ctrl->alreadyLoggedIn = NO;
253: }
254: /* end _GM_ */
1.60 frystyk 255: } else {
1.73 frystyk 256: HTChunk_puts(me->welcome, ptr);
257: HTChunk_putc(me->welcome, '\n');
1.33 frystyk 258: }
1.60 frystyk 259: me->buflen = 0;
1.68 frystyk 260: me->state = EOL_BEGIN;
1.60 frystyk 261: if (cont != '-') {
262: me->first_line = YES;
263: return HT_LOADED;
1.33 frystyk 264: }
1.60 frystyk 265: return HT_OK;
1.33 frystyk 266: }
267:
1.60 frystyk 268: /*
269: ** Searches for FTP header line until buffer fills up or a CRLF or LF
270: ** is found
1.23 frystyk 271: */
1.79 frystyk 272: PRIVATE int FTPStatus_put_block (HTStream * me, const char * b, int l)
1.92 eric 273: {
1.60 frystyk 274: int status;
1.93 frystyk 275: HTHost_setConsumed(me->host, l);
1.60 frystyk 276: while (l-- > 0) {
277: if (me->state == EOL_FCR) {
278: if (*b == LF) {
1.62 frystyk 279: if (!me->junk) {
1.93 frystyk 280: if ((status = ScanResponse(me)) != HT_OK) return status;
1.62 frystyk 281: } else {
282: me->buflen = 0;
283: me->junk = NO;
284: }
1.60 frystyk 285: }
286: } else if (*b == CR) {
287: me->state = EOL_FCR;
288: } else if (*b == LF) {
1.62 frystyk 289: if (!me->junk) {
1.93 frystyk 290: if ((status = ScanResponse(me)) != HT_OK) return status;
1.62 frystyk 291: } else {
292: me->buflen = 0;
293: me->junk = NO;
294: }
1.60 frystyk 295: } else {
296: *(me->buffer+me->buflen++) = *b;
1.63 frystyk 297: if (me->buflen >= MAX_FTP_LINE) {
1.102 frystyk 298: HTTRACE(PROT_TRACE, "FTP Status.. Line too long - chopped\n");
1.62 frystyk 299: me->junk = YES;
300: if ((status = ScanResponse(me)) != HT_OK) {
301: me->junk = NO;
302: return status;
303: }
1.23 frystyk 304: }
305: }
1.60 frystyk 306: b++;
1.25 frystyk 307: }
1.60 frystyk 308: return HT_OK;
1.25 frystyk 309: }
310:
1.79 frystyk 311: PRIVATE int FTPStatus_put_string (HTStream * me, const char * s)
1.60 frystyk 312: {
313: return FTPStatus_put_block(me, s, (int) strlen(s));
314: }
1.25 frystyk 315:
1.65 frystyk 316: PRIVATE int FTPStatus_put_character (HTStream * me, char c)
1.25 frystyk 317: {
1.60 frystyk 318: return FTPStatus_put_block(me, &c, 1);
319: }
1.25 frystyk 320:
1.65 frystyk 321: PRIVATE int FTPStatus_flush (HTStream * me)
1.60 frystyk 322: {
323: return (*me->target->isa->flush)(me->target);
1.23 frystyk 324: }
1.22 frystyk 325:
1.65 frystyk 326: PRIVATE int FTPStatus_free (HTStream * me)
1.22 frystyk 327: {
1.60 frystyk 328: int status = HT_OK;
329: if (me->target) {
330: if ((status = (*me->target->isa->_free)(me->target)) == HT_WOULD_BLOCK)
331: return HT_WOULD_BLOCK;
1.22 frystyk 332: }
1.73 frystyk 333: HTChunk_delete(me->welcome);
1.77 frystyk 334: HT_FREE(me);
1.60 frystyk 335: return HT_OK;
1.22 frystyk 336: }
337:
1.68 frystyk 338: PRIVATE int FTPStatus_abort (HTStream * me, HTList * e)
1.22 frystyk 339: {
1.60 frystyk 340: if (me->target)
341: (*me->target->isa->abort)(me->target, e);
1.73 frystyk 342: HTChunk_delete(me->welcome);
1.77 frystyk 343: HT_FREE(me);
1.102 frystyk 344: HTTRACE(PROT_TRACE, "FTPStatus... ABORTING...\n");
1.60 frystyk 345: return HT_ERROR;
1.22 frystyk 346: }
347:
1.60 frystyk 348: /* FTPStatus Stream
349: ** -----------------
1.22 frystyk 350: */
1.79 frystyk 351: PRIVATE const HTStreamClass FTPStatusClass =
1.60 frystyk 352: {
353: "FTPStatus",
354: FTPStatus_flush,
355: FTPStatus_free,
356: FTPStatus_abort,
357: FTPStatus_put_character,
358: FTPStatus_put_string,
359: FTPStatus_put_block
360: };
361:
1.92 eric 362: PRIVATE HTStream * FTPStatus_new (HTRequest * request, ftp_ctrl * ctrl, HTHost * host)
1.60 frystyk 363: {
1.77 frystyk 364: HTStream * me;
365: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
366: HT_OUTOFMEM("FTPStatus_new");
1.60 frystyk 367: me->isa = &FTPStatusClass;
368: me->request = request;
369: me->first_line = YES;
1.73 frystyk 370: me->welcome = HTChunk_new(256);
1.60 frystyk 371: me->ctrl = ctrl;
372: me->state = EOL_BEGIN;
1.92 eric 373: me->host = host;
1.60 frystyk 374: return me;
1.22 frystyk 375: }
376:
1.60 frystyk 377: /* ------------------------------------------------------------------------- */
378: /* FTP Client Functions for managing control and data connections */
379: /* ------------------------------------------------------------------------- */
1.22 frystyk 380:
1.60 frystyk 381: PRIVATE int SendCommand (HTRequest *request, ftp_ctrl *ctrl,
382: char *token, char *pars)
383: {
384: int len = strlen(token) + (pars ? strlen(pars)+1:0) + 2;
1.84 frystyk 385: HTStream * input = HTRequest_inputStream(request);
1.73 frystyk 386: HTChunk_clear(ctrl->cmd);
387: HTChunk_ensure(ctrl->cmd, len);
1.60 frystyk 388: if (pars && *pars)
1.73 frystyk 389: sprintf(HTChunk_data(ctrl->cmd), "%s %s%c%c", token, pars, CR, LF);
1.60 frystyk 390: else
1.73 frystyk 391: sprintf(HTChunk_data(ctrl->cmd), "%s%c%c", token, CR, LF);
1.102 frystyk 392: HTTRACE(PROT_TRACE, "FTP Tx...... %s" _ HTChunk_data(ctrl->cmd));
1.84 frystyk 393: return (*input->isa->put_block)(input, HTChunk_data(ctrl->cmd), len);
1.60 frystyk 394: }
395:
396: /* HTFTPParseURL
397: ** -------------
398: ** Scan URL for uid and passwd, and any data type indication. The
399: ** expected format is [user[:password]@]host[:port].
400: ** If no values are found then use defaults.
401: ** Returns YES if OK, else NO
1.22 frystyk 402: */
1.83 frystyk 403: PRIVATE BOOL HTFTPParseURL (HTRequest * request,
404: char *url, ftp_ctrl *ctrl, ftp_data *data)
1.22 frystyk 405: {
1.60 frystyk 406: char *login = HTParse(url, "", PARSE_HOST);
407: char *path = HTParse(url, "", PARSE_PATH+PARSE_PUNCTUATION);
408: char *ptr = strchr(login, '@');
409: if (ptr) { /* Uid and/or passwd specified */
410: char *passwd;
411: *ptr = '\0';
412: if ((passwd = strchr(login, ':'))) { /* Passwd specified */
413: *passwd++ = '\0';
414: HTUnEscape(passwd);
415: StrAllocCopy(ctrl->passwd, passwd);
1.22 frystyk 416: }
1.60 frystyk 417: HTUnEscape(login);
418: StrAllocCopy(ctrl->uid, login);
1.97 frystyk 419: } else if (g_FTPControlMode & FTP_ALWAYS_ASK_UID_PW) {
420: ctrl->uid=NULL;
421: ctrl->passwd=NULL;
422: } else { /* Use anonymous */
1.83 frystyk 423: HTUserProfile * up = HTRequest_userProfile(request);
1.97 frystyk 424: const char * mailaddress = HTUserProfile_email(up);
1.60 frystyk 425: StrAllocCopy(ctrl->uid, "anonymous");
426: if (mailaddress)
427: StrAllocCopy(ctrl->passwd, mailaddress);
428: else
429: StrAllocCopy(ctrl->passwd, WWW_FTP_CLIENT);
1.22 frystyk 430: }
1.102 frystyk 431: HTTRACE(PROT_TRACE, "FTPParse.... uid `%s\' pw `%s\'\n" _
1.104 ! frystyk 432: ctrl->uid ? ctrl->uid : "<null>" _
! 433: ctrl->passwd ? ctrl->passwd : "<null>");
1.60 frystyk 434:
1.104 ! frystyk 435: /*
! 436: ** Look for any type in the URI. If not 'type' parameter then look for
! 437: ** trailing slash.
! 438: */
! 439: if ((ptr = strchr(path, ';')) != NULL) {
1.60 frystyk 440: *ptr = '\0';
441: if (strncasecomp(ptr, ";type=", 6)) /* Look for type */
442: data->type = TOUPPER(*(ptr+6));
443: else if (*(ptr-1) == '/')
1.104 ! frystyk 444: data->type = 'D';
1.60 frystyk 445: } else if (*(path+strlen(path)-1) == '/') {
446: *(path+strlen(path)-1) = '\0';
1.104 ! frystyk 447: data->type = 'D';
1.60 frystyk 448: }
1.102 frystyk 449: HTTRACE(PROT_TRACE, "FTPParse.... Datatype %c\n" _ data->type ? data->type : '?');
1.60 frystyk 450: StrAllocCopy(data->file, path);
451: data->offset = data->file;
1.77 frystyk 452: HT_FREE(login);
453: HT_FREE(path);
1.60 frystyk 454: return YES;
1.22 frystyk 455: }
456:
1.60 frystyk 457: /* Use LIST or NLST
458: ** ----------------
459: ** This function sets the type field for what type of list we can use
460: ** Returns YES if OK, else NO
461: */
1.63 frystyk 462: PRIVATE BOOL FTPListType (ftp_data * data, FTPServerType type)
1.60 frystyk 463: {
464: if (!data) return NO;
465: switch (type) {
466: case FTP_GENERIC: data->type='N'; break;
467: case FTP_MACHTEN: data->type='L'; break;
468: case FTP_UNIX: data->type='L'; break;
469: case FTP_VMS: data->type='L'; break;
470: case FTP_CMS: data->type='N'; break;
471: case FTP_DCTS: data->type='N'; break;
472: case FTP_TCPC: data->type='N'; break;
473: case FTP_PETER_LEWIS: data->type='L'; break;
474: case FTP_NCSA: data->type='N'; break;
475: case FTP_WINNT: data->type='L'; break;
476: default: data->type='N'; break;
477: }
478: return YES;
479: }
480:
481: /* Open a Data socket for listening on
482: ** -----------------------------------
483: ** Set up a port to listen for data
484: ** Returns YES if OK, else NO
1.22 frystyk 485: */
1.104 ! frystyk 486: PRIVATE BOOL AcceptDataSocket (HTNet *cnet, HTNet *dnet, ftp_data *data)
1.22 frystyk 487: {
1.104 ! frystyk 488: if (HTHost_listen(NULL, dnet, "ftp://localhost:0") == HT_ERROR)
! 489: return NO;
1.22 frystyk 490:
1.104 ! frystyk 491: /*
! 492: ** Now we must find out who we are to tell the other guy
! 493: ** We have to get the local IP interface from the control connection as
! 494: ** this is not yet set in the unaccepted data socket
! 495: */
1.60 frystyk 496: {
1.104 ! frystyk 497: SockA local_port, local_host;
! 498: int addr_size = sizeof(local_port);
! 499: memset((void *) &local_host, '\0', addr_size);
! 500: memset((void *) &local_port, '\0', addr_size);
! 501: if (getsockname(HTNet_socket(cnet),
! 502: (struct sockaddr *) &local_host, &addr_size) < 0 ||
! 503: getsockname(HTNet_socket(dnet),
! 504: (struct sockaddr *) &local_port, &addr_size) < 0) {
1.93 frystyk 505: HTRequest_addSystemError(HTNet_request(dnet), ERR_FATAL, socerrno,
1.68 frystyk 506: NO, "getsockname");
1.60 frystyk 507: return NO;
1.22 frystyk 508: }
1.104 ! frystyk 509: HTTRACE(PROT_TRACE, "FTP......... This host is `%s\'\n" _ HTInetString(&local_host));
1.60 frystyk 510: {
1.104 ! frystyk 511: u_long addr = local_host.sin_addr.s_addr;
! 512: u_short port = local_port.sin_port;
1.60 frystyk 513: sprintf(data->host, "%d,%d,%d,%d,%d,%d",
514: (int)*((unsigned char *)(&addr)+0),
515: (int)*((unsigned char *)(&addr)+1),
516: (int)*((unsigned char *)(&addr)+2),
517: (int)*((unsigned char *)(&addr)+3),
518: (int)*((unsigned char *)(&port)+0),
519: (int)*((unsigned char *)(&port)+1));
1.22 frystyk 520: }
521: }
1.60 frystyk 522: return YES;
1.22 frystyk 523: }
524:
1.60 frystyk 525: /* HTFTPLogin
526: ** -----------
527: ** This function makes a login to a ftp-server. It takes the user name
528: ** and passwd specified in ctrl->user and if that fails or an additional
529: ** account is needed, the user is prompted.
530: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.22 frystyk 531: */
1.60 frystyk 532: PRIVATE int HTFTPLogin (HTRequest *request, HTNet *cnet, ftp_ctrl *ctrl)
1.22 frystyk 533: {
1.60 frystyk 534: int status;
535: typedef enum _state {
536: SUB_ERROR = -2,
537: SUB_SUCCESS = -1,
538: NEED_SELECT = 0,
539: NEED_GREETING,
540: NEED_REIN,
541: NEED_UID,
542: NEED_PASSWD,
543: NEED_ACCOUNT,
544: PROMPT_USER
545: } state;
546:
547: /* Jump into a second level state machine */
548: while (1) {
549: switch ((state) ctrl->substate) {
1.99 frystyk 550: case NEED_SELECT:
551: {
552: HTAlertCallback * cbf = HTAlert_find(HT_PROG_LOGIN);
553: if (cbf) (*cbf)(request, HT_PROG_LOGIN, HT_MSG_NULL, NULL, NULL, NULL);
1.104 ! frystyk 554: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_SELECT\n");
1.99 frystyk 555: ctrl->substate = ctrl->reset ? NEED_REIN : NEED_GREETING;
556: }
1.60 frystyk 557: break;
558:
559: case NEED_GREETING:
1.104 ! frystyk 560: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_GREETING\n");
1.93 frystyk 561: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 562: if (status == HT_WOULD_BLOCK)
563: return HT_WOULD_BLOCK;
564: else if (status == HT_LOADED) {
1.66 frystyk 565: if (ctrl->repcode/100 == 2) {
566: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
567: NEED_UID : PROMPT_USER;
1.95 frystyk 568: } else {
1.60 frystyk 569: ctrl->substate = SUB_ERROR;
1.95 frystyk 570: }
571: } else {
1.60 frystyk 572: ctrl->substate = SUB_ERROR;
1.95 frystyk 573: }
1.60 frystyk 574: break;
575:
576: case NEED_REIN:
1.104 ! frystyk 577: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_REIN\n");
1.60 frystyk 578: if (!ctrl->sent) {
579: status = SendCommand(request, ctrl, "REIN", NULL);
580: if (status == HT_WOULD_BLOCK)
581: return HT_WOULD_BLOCK;
582: else if (status == HT_ERROR)
583: ctrl->substate = SUB_ERROR;
584: ctrl->sent = YES;
585: } else {
1.93 frystyk 586: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 587: if (status == HT_WOULD_BLOCK)
588: return HT_WOULD_BLOCK;
589: else if (status == HT_LOADED) {
1.104 ! frystyk 590: /*
! 591: ** If the FTP server doesn't support the REIN command, then
! 592: ** the return code will be 502
! 593: */
1.95 frystyk 594: if ((ctrl->repcode/100 == 2) || (ctrl->repcode == 502)) {
1.66 frystyk 595: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
596: NEED_UID : PROMPT_USER;
1.95 frystyk 597: } else {
1.60 frystyk 598: ctrl->substate = SUB_SUCCESS; /* hope the best */
1.95 frystyk 599: }
600: } else {
1.60 frystyk 601: ctrl->substate = SUB_ERROR;
1.95 frystyk 602: }
1.60 frystyk 603: ctrl->sent = NO;
1.22 frystyk 604: }
1.60 frystyk 605: break;
606:
607: case NEED_UID:
1.104 ! frystyk 608: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_UID\n");
1.60 frystyk 609: if (!ctrl->sent) {
610: status = SendCommand(request, ctrl, "USER", ctrl->uid);
611: if (status == HT_WOULD_BLOCK)
612: return HT_WOULD_BLOCK;
613: else if (status == HT_ERROR)
614: ctrl->substate = SUB_ERROR;
615: ctrl->sent = YES;
1.22 frystyk 616: } else {
1.93 frystyk 617: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 618: if (status == HT_WOULD_BLOCK)
619: return HT_WOULD_BLOCK;
620: else if (status == HT_LOADED) {
621: int code = ctrl->repcode/100;
622: if (code == 2) /* Logged in w/o passwd! */
623: ctrl->substate = SUB_SUCCESS;
1.66 frystyk 624: else if (code == 3) { /* Password demanded */
625: ctrl->substate = (ctrl->passwd && *ctrl->passwd) ?
626: NEED_PASSWD : PROMPT_USER;
1.95 frystyk 627: /* begin _GM_ */
628: /* Note: libwww bug ID: GM3 */
629: /* } else if (ctrl->repcode == 530) */
630: /* ctrl->substate = PROMPT_USER;*/ /* User unknown */
631: } else if (ctrl->repcode == 530) {
632: if (ctrl->alreadyLoggedIn == YES) {
633: ctrl->substate = SUB_SUCCESS;
1.104 ! frystyk 634: HTTRACE(PROT_TRACE, "FTP Login... Already logged in\n");
1.95 frystyk 635: } else {
636: ctrl->substate = PROMPT_USER;
1.104 ! frystyk 637: HTTRACE(PROT_TRACE, "FTP Login... User Unknown\n");
1.95 frystyk 638: }
639: }
640: /* end _GM_ */
1.60 frystyk 641: else
642: ctrl->substate = SUB_ERROR;
643: } else
644: ctrl->substate = SUB_ERROR;
645: ctrl->sent = NO;
1.22 frystyk 646: }
1.60 frystyk 647: break;
1.1 timbl 648:
1.60 frystyk 649: case NEED_PASSWD:
1.104 ! frystyk 650: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_PASSWD\n");
1.60 frystyk 651: if (!ctrl->sent) {
652: status = SendCommand(request, ctrl, "PASS", ctrl->passwd);
653: if (status == HT_WOULD_BLOCK)
654: return HT_WOULD_BLOCK;
655: else if (status == HT_ERROR)
656: ctrl->substate = SUB_ERROR;
657: ctrl->sent = YES;
658: } else {
1.93 frystyk 659: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 660: if (status == HT_WOULD_BLOCK)
661: return HT_WOULD_BLOCK;
662: else if (status == HT_LOADED) {
663: int code = ctrl->repcode/100;
664: if (code == 2) /* Logged in with passwd */
665: ctrl->substate = SUB_SUCCESS;
1.70 frystyk 666: else if (code == 3) { /* Account required */
667: HTAlertCallback *cbf = HTAlert_find(HT_A_PROMPT);
668: HTAlertPar * reply = HTAlert_newReply();
669: if (cbf && (*cbf)(request, HT_A_PROMPT,
670: HT_MSG_ACCOUNT, NULL, NULL, reply)) {
671: ctrl->account = HTAlert_replyMessage(reply);
1.60 frystyk 672: ctrl->substate = NEED_ACCOUNT;
1.70 frystyk 673: } else
1.60 frystyk 674: ctrl->substate = SUB_ERROR;
1.70 frystyk 675: HTAlert_deleteReply(reply);
1.60 frystyk 676: } else if (ctrl->repcode == 530)
677: ctrl->substate = PROMPT_USER;
678: else
679: ctrl->substate = SUB_ERROR;
680: } else
681: ctrl->substate = SUB_ERROR;
682: ctrl->sent = NO;
683: }
684: break;
1.1 timbl 685:
1.60 frystyk 686: case NEED_ACCOUNT:
1.104 ! frystyk 687: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_ACCOUNT\n");
1.60 frystyk 688: if (!ctrl->sent) {
689: status = SendCommand(request, ctrl, "ACCT", ctrl->account);
690: if (status == HT_WOULD_BLOCK)
691: return HT_WOULD_BLOCK;
692: else if (status == HT_ERROR)
693: ctrl->substate = SUB_ERROR;
694: ctrl->sent = YES;
1.23 frystyk 695: } else {
1.93 frystyk 696: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 697: if (status == HT_WOULD_BLOCK)
698: return HT_WOULD_BLOCK;
699: else if (status == HT_LOADED) {
700: int code = ctrl->repcode/100;
701: if (code == 2) /* Logged in with account */
702: ctrl->substate = SUB_SUCCESS;
703: else
704: ctrl->substate = SUB_ERROR; /* hopeless */
705: } else
706: ctrl->substate = SUB_ERROR;
707: ctrl->sent = NO;
1.1 timbl 708: }
1.60 frystyk 709: break;
1.1 timbl 710:
1.60 frystyk 711: case PROMPT_USER:
1.104 ! frystyk 712: HTTRACE(PROT_TRACE, "FTP Login... now in state PROMPT_USER\n");
1.60 frystyk 713: {
1.70 frystyk 714: HTAlertCallback *cbf = HTAlert_find(HT_A_USER_PW);
715: HTAlertPar * reply = HTAlert_newReply();
1.77 frystyk 716: HT_FREE(ctrl->uid);
717: HT_FREE(ctrl->passwd);
1.87 frystyk 718: if (cbf && (*cbf)(request, HT_A_USER_PW, HT_MSG_FTP_UID,
719: NULL, NULL, reply)){
1.70 frystyk 720: ctrl->uid = HTAlert_replyMessage(reply);
721: ctrl->passwd = HTAlert_replySecret(reply);
722: }
723: HTAlert_deleteReply(reply);
1.66 frystyk 724: if (ctrl->uid && *ctrl->uid && ctrl->passwd && *ctrl->passwd)
1.60 frystyk 725: ctrl->substate = NEED_UID;
726: else
727: ctrl->substate = SUB_ERROR;
728: }
729: break;
1.1 timbl 730:
1.60 frystyk 731: case SUB_ERROR:
1.104 ! frystyk 732: HTTRACE(PROT_TRACE, "FTP Login... now in state SUB_ERROR\n");
1.95 frystyk 733: HTRequest_addError(request, ERR_FATAL, NO,
734: HTERR_FTP_LOGIN_FAILURE, NULL, 0, "HTFTPLogin");
1.102 frystyk 735: HTTRACE(PROT_TRACE, "FTP......... Login failed\n");
1.60 frystyk 736: ctrl->substate = 0;
737: return HT_ERROR;
738: break;
1.23 frystyk 739:
1.60 frystyk 740: case SUB_SUCCESS:
1.104 ! frystyk 741: HTTRACE(PROT_TRACE, "FTP Login... now in state SUB_SUCCESS\n");
1.102 frystyk 742: HTTRACE(PROT_TRACE, "FTP......... Logged in as `%s\'\n" _ ctrl->uid);
1.60 frystyk 743: ctrl->substate = 0;
744: return HT_OK;
745: break;
1.23 frystyk 746: }
1.22 frystyk 747: }
748: }
749:
1.60 frystyk 750: /* HTFTPDataConnection
751: ** -------------------
752: ** Prepares a data connection to the server and initializes the
753: ** transfer mode.
754: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.1 timbl 755: */
1.60 frystyk 756: PRIVATE int HTFTPDataConnection (HTRequest * request, HTNet *cnet,
757: ftp_ctrl *ctrl, ftp_data *data)
1.1 timbl 758: {
1.60 frystyk 759: int status;
760: HTNet *dnet = ctrl->dnet;
761: typedef enum _state {
762: SUB_ERROR = -2,
763: SUB_SUCCESS = -1,
764: NEED_TYPE = 0,
765: NEED_SELECT,
766: NEED_PASV,
767: NEED_PORT
768: } state;
769:
770: /* Jump into a second level state machine */
771: while (1) {
772: switch ((state) ctrl->substate) {
773: case NEED_TYPE:
1.102 frystyk 774: HTTRACE(PROT_TRACE, "FTP Data.... now in state NEED_TYPE\n");
1.60 frystyk 775: if(!data->type|| data->pasv || data->type=='N' || data->type=='L'){
776: ctrl->substate = NEED_SELECT;
777: break;
778: }
779: if (!ctrl->sent) {
780: char type[2];
781: *type = data->type;
782: *(type+1) = '\0';
783: status = SendCommand(request, ctrl, "TYPE", type);
784: if (status == HT_WOULD_BLOCK)
785: return HT_WOULD_BLOCK;
786: else if (status == HT_ERROR)
787: ctrl->substate = SUB_ERROR;
788: ctrl->sent = YES;
789: } else {
1.93 frystyk 790: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 791: if (status == HT_WOULD_BLOCK)
792: return HT_WOULD_BLOCK;
793: else if (status == HT_LOADED) {
794: if (ctrl->repcode/100 == 2)
795: ctrl->substate = NEED_SELECT;
796: else
797: ctrl->substate = SUB_ERROR;
798: } else
799: ctrl->substate = SUB_ERROR;
800: ctrl->sent = NO;
801: }
802: break;
803:
804: case NEED_SELECT:
1.102 frystyk 805: HTTRACE(PROT_TRACE, "FTP Data.... now in state NEED_SELECT\n");
1.60 frystyk 806: if (FTPMode & FTP_DATA_PASV && !data->pasv)
807: ctrl->substate = NEED_PASV;
1.104 ! frystyk 808: else if (AcceptDataSocket(cnet, dnet, data))
1.60 frystyk 809: ctrl->substate = NEED_PORT;
810: else
811: ctrl->substate = SUB_ERROR;
812: break;
813:
814: case NEED_PASV:
1.102 frystyk 815: HTTRACE(PROT_TRACE, "FTP Data.... now in state NEED_PASV\n");
1.60 frystyk 816: if (!ctrl->sent) {
817: status = SendCommand(request, ctrl, "PASV", NULL);
818: if (status == HT_WOULD_BLOCK)
819: return HT_WOULD_BLOCK;
820: else if (status == HT_ERROR)
821: ctrl->substate = SUB_ERROR;
822: ctrl->sent = YES;
823: } else {
1.93 frystyk 824: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 825: if (status == HT_WOULD_BLOCK)
826: return HT_WOULD_BLOCK;
827: else if (status == HT_LOADED) {
828: if (ctrl->repcode == 227) {
829: /*
830: ** If succes, we have to scan for the returned number.
831: ** As the format for the response isn't standard,
832: ** the best thing to do is to scan for the first digit
833: ** after the status code, see RFC1123
834: */
835: char *host = ctrl->reply;
836: int h0, h1, h2, h3, p0=0, p1=0;
1.94 frystyk 837: while (*host && !isdigit((int) *host++));
1.60 frystyk 838: if (!*host || sscanf(--host, "%d,%d,%d,%d,%d,%d",
839: &h0,&h1,&h2,&h3,&p0,&p1) < 6) {
1.102 frystyk 840: HTTRACE(PROT_TRACE, "FTP Data.... PASV No addr\n");
1.60 frystyk 841: ctrl->substate = SUB_ERROR;
842: break;
843: } else {
844: int port = (p0<<8)+p1;
845: sprintf(data->host, "ftp://%d.%d.%d.%d:%d/",
846: h0, h1, h2, h3, port);
847: data->pasv = YES;
848: ctrl->substate = SUB_SUCCESS;
849: }
850: } else {
1.104 ! frystyk 851: ctrl->substate = AcceptDataSocket(cnet, dnet, data) ?
1.60 frystyk 852: NEED_PORT : SUB_ERROR;
853: }
854: } else
855: ctrl->substate = SUB_ERROR;
856: ctrl->sent = NO;
857: }
858: break;
1.22 frystyk 859:
1.60 frystyk 860: case NEED_PORT:
1.102 frystyk 861: HTTRACE(PROT_TRACE, "FTP Data.... now in state NEED_PORT\n");
1.60 frystyk 862: if (!ctrl->sent) {
863: status = SendCommand(request, ctrl, "PORT", data->host);
864: if (status == HT_WOULD_BLOCK)
865: return HT_WOULD_BLOCK;
866: else if (status == HT_ERROR)
867: ctrl->substate = SUB_ERROR;
868: ctrl->sent = YES;
869: } else {
1.93 frystyk 870: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 871: if (status == HT_WOULD_BLOCK)
872: return HT_WOULD_BLOCK;
873: else if (status == HT_LOADED) {
874: data->pasv = NO;
875: ctrl->substate = (ctrl->repcode/100 == 2) ?
876: SUB_SUCCESS : SUB_ERROR;
877: } else
878: ctrl->substate = SUB_ERROR;
879: ctrl->sent = NO;
880: }
881: break;
1.1 timbl 882:
1.60 frystyk 883: case SUB_ERROR:
1.102 frystyk 884: HTTRACE(PROT_TRACE, "FTP Data.... now in state SUB_ERROR\n");
885: HTTRACE(PROT_TRACE, "FTP Data.... Can't setup data connection\n");
1.60 frystyk 886: ctrl->substate = 0;
887: return HT_ERROR;
888: break;
1.1 timbl 889:
1.60 frystyk 890: case SUB_SUCCESS:
1.102 frystyk 891: HTTRACE(PROT_TRACE, "FTP Data.... now in state SUB_SUCCESS\n");
892: HTTRACE(PROT_TRACE, "FTP Data.... Data connection negotiated\n");
1.60 frystyk 893: ctrl->substate = 0;
894: return HT_OK;
895: break;
1.23 frystyk 896: }
1.58 frystyk 897: }
1.23 frystyk 898: }
1.1 timbl 899:
900:
1.60 frystyk 901: /* HTFTPServerInfo
902: ** ---------------
903: ** This function finds out what server we are talking to.
904: ** Maybe we can upgrade from NLST to LIST.
905: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
906: ** Thanks to James.W.Matthews@Dartmouth.EDU (James W. Matthews) for making
907: ** his code available.
1.1 timbl 908: */
1.60 frystyk 909: PRIVATE int HTFTPServerInfo (HTRequest *request, HTNet *cnet,
910: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 911: {
1.60 frystyk 912: int status;
913: typedef enum _state {
914: SUB_ERROR = -2,
915: SUB_SUCCESS = -1,
916: NEED_SYST = 0,
917: CHECK_SYST,
918: NEED_PWD,
919: CHECK_PWD
920: } state;
921:
922: /* Jump into a second level state machine */
923: while (1) {
924: switch ((state) ctrl->substate) {
925: case NEED_SYST:
1.102 frystyk 926: HTTRACE(PROT_TRACE, "FTP Server.. now in state NEED_SYST\n");
1.60 frystyk 927: if (!ctrl->sent) {
1.63 frystyk 928: if (ctrl->server != FTP_UNSURE) {
1.60 frystyk 929: FTPListType(data, ctrl->server);
930: return HT_OK;
931: }
932: status = SendCommand(request, ctrl, "SYST", NULL);
933: if (status == HT_WOULD_BLOCK)
934: return HT_WOULD_BLOCK;
935: else if (status == HT_ERROR)
936: ctrl->substate = SUB_ERROR;
937: ctrl->sent = YES;
938: } else {
1.93 frystyk 939: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 940: if (status == HT_WOULD_BLOCK)
941: return HT_WOULD_BLOCK;
942: else if (status == HT_LOADED) {
943: ctrl->substate=ctrl->repcode==215 ? CHECK_SYST : NEED_PWD;
944: } else
945: ctrl->substate = SUB_ERROR;
946: ctrl->sent = NO;
1.23 frystyk 947: }
948: break;
949:
1.60 frystyk 950: case CHECK_SYST:
1.102 frystyk 951: HTTRACE(PROT_TRACE, "FTP Server.. now in state CHECK_SYST\n");
1.23 frystyk 952: {
1.60 frystyk 953: char *reply = ctrl->reply;
954: if (!*reply) {
1.102 frystyk 955: HTTRACE(PROT_TRACE, "FTP Server.. No server info?\n");
1.60 frystyk 956: ctrl->substate = NEED_PWD;
1.23 frystyk 957: break;
958: }
1.60 frystyk 959: if (strncmp(reply, "UNIX Type: L8MAC-OSMachTen", 28) == 0) {
960: ctrl->server = FTP_MACHTEN;
961: } else if (strstr(reply, "UNIX") != NULL) {
962: ctrl->server = FTP_UNIX;
963: } else if (strncmp(reply, "VMS", 3) == 0) {
964: ctrl->server = FTP_VMS;
965: } else if ((strncmp(reply, "VM/CMS", 6) == 0) ||
966: (strncmp(reply, "VM", 2) == 0)) {
967: ctrl->server = FTP_CMS;
968: } else if (strncmp(reply, "DCTS", 4) == 0) {
969: ctrl->server = FTP_DCTS;
970: } else if (strstr(reply, "MAC-OS TCP/ConnectII") != NULL) {
1.23 frystyk 971: /* Check old versions of TCP/C using / in pathnames */
1.63 frystyk 972: ctrl->server = FTP_TCPC + FTP_UNSURE;
1.60 frystyk 973: } else if (strncmp(reply, "MACOS Peter's Server", 20) == 0) {
974: ctrl->server = FTP_PETER_LEWIS;
975: } else if (strncmp(reply, "Windows_NT", 10) == 0) {
976: ctrl->server = FTP_WINNT;
1.23 frystyk 977: }
978:
979: /* If we are unsure, try PWD to get more information */
1.60 frystyk 980: if (ctrl->server & FTP_UNSURE)
981: ctrl->substate = NEED_PWD;
1.23 frystyk 982: else
1.60 frystyk 983: ctrl->substate = SUB_SUCCESS;
1.1 timbl 984: }
1.23 frystyk 985: break;
986:
987: case NEED_PWD:
1.102 frystyk 988: HTTRACE(PROT_TRACE, "FTP Server.. now in state NEED_PWD\n");
1.60 frystyk 989: if (!ctrl->sent) {
990: status = SendCommand(request, ctrl, "PWD", NULL);
991: if (status == HT_WOULD_BLOCK)
992: return HT_WOULD_BLOCK;
993: else if (status == HT_ERROR)
994: ctrl->substate = SUB_ERROR;
995: ctrl->sent = YES;
1.23 frystyk 996: } else {
1.93 frystyk 997: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 998: if (status == HT_WOULD_BLOCK)
999: return HT_WOULD_BLOCK;
1000: else if (status == HT_LOADED) {
1001: ctrl->substate = (ctrl->repcode/100 == 2) ?
1002: CHECK_PWD : SUB_ERROR;
1003: } else
1004: ctrl->substate = SUB_ERROR;
1005: ctrl->sent = NO;
1.23 frystyk 1006: }
1007: break;
1008:
1.60 frystyk 1009: case CHECK_PWD:
1.102 frystyk 1010: HTTRACE(PROT_TRACE, "FTP Server.. now in state CHECK_PWD\n");
1.60 frystyk 1011: {
1012: char *start = strchr(ctrl->reply, '"');
1013: char *end;
1014: if (!start || (end = strchr(++start, '"')) == NULL) {
1.102 frystyk 1015: HTTRACE(PROT_TRACE, "FTP Server.. No current directory?\n");
1.60 frystyk 1016: ctrl->server = FTP_GENERIC;
1.23 frystyk 1017: } else {
1.60 frystyk 1018: *end = '\0';
1.63 frystyk 1019: if (ctrl->server & FTP_TCPC) {
1.60 frystyk 1020: ctrl->server = *start == '/' ? FTP_NCSA : FTP_TCPC;
1021: } else if (*start == '/') {
1022: /* path names starting with / imply Unix, right? */
1023: ctrl->server = FTP_UNIX;
1024: } else if (*(end-1) == ']') {
1025: /* path names ending with ] imply VMS, right? */
1026: ctrl->server = FTP_VMS;
1027: } else
1028: ctrl->server = FTP_GENERIC;
1.23 frystyk 1029: }
1.60 frystyk 1030: ctrl->substate = SUB_SUCCESS;
1.1 timbl 1031: }
1.23 frystyk 1032: break;
1.1 timbl 1033:
1.60 frystyk 1034: case SUB_ERROR:
1.102 frystyk 1035: HTTRACE(PROT_TRACE, "FTP Server.. now in state SUB_ERROR\n");
1036: HTTRACE(PROT_TRACE, "FTP Server.. Can't get server information\n");
1.60 frystyk 1037: ctrl->substate = 0;
1.63 frystyk 1038: ctrl->server = FTP_GENERIC;
1.60 frystyk 1039: return HT_ERROR;
1.23 frystyk 1040: break;
1.22 frystyk 1041:
1.60 frystyk 1042: case SUB_SUCCESS:
1.102 frystyk 1043: HTTRACE(PROT_TRACE, "FTP Server.. now in state SUB_SUCCESS\n");
1.95 frystyk 1044: {
1.81 frystyk 1045: HTHost * host = HTNet_host(cnet);
1.102 frystyk 1046: HTTRACE(PROT_TRACE, "FTP Server.. Guessed type %d\n" _ ctrl->server);
1.81 frystyk 1047: HTHost_setVersion(host, ctrl->server);
1048: FTPListType(data, ctrl->server);
1049: ctrl->substate = 0;
1050: return HT_OK;
1051: break;
1.95 frystyk 1052: }
1.22 frystyk 1053: }
1.23 frystyk 1054: }
1055: }
1056:
1.60 frystyk 1057: /* HTFTPGetData
1058: ** ------------
1059: ** This function asks for the file or a directory. First we try in one go,
1.23 frystyk 1060: ** but if that doesn't work, then we use CWD for each segment and then
1061: ** try to retrieve it. If that also fails, then we try if it is a
1.60 frystyk 1062: ** directory.
1063: ** Returns HT_OK, HT_LOADED, HT_ERROR, or HT_WOULD_BLOCK
1.23 frystyk 1064: */
1.71 frystyk 1065: PRIVATE int HTFTPGetData (HTRequest *request, HTNet *cnet, SOCKET sockfd,
1.60 frystyk 1066: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 1067: {
1068: int status;
1.60 frystyk 1069: char *segment = NULL;
1070: HTNet *dnet = ctrl->dnet;
1.93 frystyk 1071: BOOL data_is_active = (sockfd == HTNet_socket(dnet));
1.60 frystyk 1072: typedef enum _state {
1073: SUB_ERROR = -2,
1074: SUB_SUCCESS = -1,
1075: NEED_SELECT = 0,
1076: NEED_CONNECT,
1077: NEED_ACCEPT,
1078: NEED_ACTION,
1079: NEED_CWD,
1080: NEED_SEGMENT,
1081: NEED_STREAM,
1.63 frystyk 1082: NEED_BODY
1.60 frystyk 1083: } state;
1084:
1085: /* Jump into a second level state machine */
1086: while (1) {
1087: switch ((state) ctrl->substate) {
1088: case NEED_SELECT:
1.102 frystyk 1089: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_SELECT\n");
1.60 frystyk 1090: ctrl->substate = data->pasv ? NEED_CONNECT : NEED_ACTION;
1091: break;
1092:
1093: case NEED_CONNECT:
1.102 frystyk 1094: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_CONNECT\n");
1.104 ! frystyk 1095: status = HTHost_connect(HTNet_host(dnet), dnet, data->host);
1.60 frystyk 1096: if (status == HT_WOULD_BLOCK)
1097: return HT_WOULD_BLOCK;
1098: else if (status == HT_OK) {
1.104 ! frystyk 1099: HTTRACE(PROT_TRACE, "FTP Get Data Active data socket %d\n" _
1.95 frystyk 1100: HTNet_socket(dnet));
1.60 frystyk 1101: ctrl->substate = NEED_ACTION;
1.81 frystyk 1102: } else { /* Swap to PORT on the fly */
1.91 frystyk 1103: NETCLOSE(HTNet_socket(dnet));
1104: HTNet_setSocket(dnet, INVSOC);
1.102 frystyk 1105: HTTRACE(PROT_TRACE, "FTP Get Data Swap to PORT on the fly\n");
1.89 frystyk 1106: ctrl->substate = NEED_SELECT;
1.77 frystyk 1107: HT_FREE(segment);
1.60 frystyk 1108: return HT_OK;
1109: }
1.23 frystyk 1110: break;
1111:
1.60 frystyk 1112: case NEED_ACCEPT:
1.102 frystyk 1113: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_ACCEPT\n");
1.104 ! frystyk 1114: status = HTHost_accept(HTNet_host(dnet), dnet, NULL);
! 1115: if (status == HT_WOULD_BLOCK)
! 1116: return HT_WOULD_BLOCK;
! 1117: else if (status == HT_OK) {
! 1118: HTTRACE(PROT_TRACE, "FTP Get Data Passive data socket %d\n" _
! 1119: HTNet_socket(dnet));
! 1120: ctrl->substate = NEED_STREAM;
! 1121: } else
! 1122: ctrl->substate = SUB_ERROR;
1.60 frystyk 1123: break;
1.33 frystyk 1124:
1.60 frystyk 1125: case NEED_ACTION:
1.102 frystyk 1126: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_ACTION\n");
1.60 frystyk 1127: if (!ctrl->sent) {
1128: char *cmd = (data->type=='L') ? "LIST" :
1129: (data->type=='N') ? "NLST" : "RETR";
1130: StrAllocCopy(segment, data->offset);
1131: HTUnEscape(segment);
1132: HTCleanTelnetString(segment);
1133: status = SendCommand(request, ctrl, cmd, segment);
1.77 frystyk 1134: HT_FREE(segment);
1.60 frystyk 1135: if (status == HT_WOULD_BLOCK)
1136: return HT_WOULD_BLOCK;
1137: else if (status == HT_ERROR)
1138: ctrl->substate = SUB_ERROR;
1139: ctrl->sent = YES;
1140: } else {
1.93 frystyk 1141: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 1142: if (status == HT_WOULD_BLOCK)
1143: return HT_WOULD_BLOCK;
1144: else if (status == HT_LOADED) {
1145: int code = ctrl->repcode;
1146: if (code==125 || code==150 || code==225)
1.93 frystyk 1147: ctrl->substate = data->pasv ? NEED_STREAM : NEED_ACCEPT;
1.60 frystyk 1148: else if (code/100==5 && !ctrl->cwd)
1149: ctrl->substate = NEED_SEGMENT;
1.95 frystyk 1150: else {
1151: if (ctrl->repcode == 550) {
1.102 frystyk 1152: HTTRACE(PROT_TRACE, "FTP Get Data no such file or directory\n");
1.95 frystyk 1153: data->stream_error = YES;
1154: }
1155: ctrl->substate = SUB_ERROR;
1156: }
1.60 frystyk 1157: } else
1158: ctrl->substate = SUB_ERROR;
1159: ctrl->sent = NO;
1.23 frystyk 1160: }
1161: break;
1.60 frystyk 1162:
1163: case NEED_SEGMENT:
1.102 frystyk 1164: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_SEGMENT\n");
1.23 frystyk 1165: {
1.60 frystyk 1166: char *ptr;
1167: if (data->offset == data->file) {
1.63 frystyk 1168: if (ctrl->server == FTP_VMS) { /* Change to root */
1.77 frystyk 1169: if ((segment = (char *) HT_MALLOC(strlen(ctrl->uid)+3)) == NULL)
1170: HT_OUTOFMEM("segment ");
1.63 frystyk 1171: sprintf(segment, "[%s]", ctrl->uid);
1172: } else
1173: StrAllocCopy(segment, "/");
1.60 frystyk 1174: data->offset++;
1175: ctrl->substate = NEED_CWD;
1176: } else {
1177: if ((ptr = strchr(data->offset, '/'))) {
1178: *ptr='\0';
1179: StrAllocCopy(segment, data->offset);
1180: *ptr='/';
1181: data->offset = ++ptr;
1182: HTUnEscape(segment);
1183: HTCleanTelnetString(segment);
1184: ctrl->substate = NEED_CWD;
1.33 frystyk 1185: } else
1.60 frystyk 1186: ctrl->substate = NEED_ACTION;
1.23 frystyk 1187: }
1188: }
1189: break;
1190:
1.60 frystyk 1191: case NEED_CWD:
1.102 frystyk 1192: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_CWD\n");
1.60 frystyk 1193: if (!ctrl->sent) {
1194: status = SendCommand(request, ctrl, "CWD", segment);
1.77 frystyk 1195: HT_FREE(segment);
1.60 frystyk 1196: if (status == HT_WOULD_BLOCK)
1197: return HT_WOULD_BLOCK;
1198: else if (status == HT_ERROR)
1199: ctrl->substate = SUB_ERROR;
1200: ctrl->cwd = YES;
1201: ctrl->sent = YES;
1202: } else {
1.93 frystyk 1203: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 1204: if (status == HT_WOULD_BLOCK)
1205: return HT_WOULD_BLOCK;
1206: else if (status == HT_LOADED) {
1207: if (ctrl->repcode/100 == 2)
1208: ctrl->substate = NEED_SEGMENT;
1209: else
1210: ctrl->substate = SUB_ERROR;
1211: } else
1212: ctrl->substate = SUB_ERROR;
1213: ctrl->sent = NO;
1.33 frystyk 1214: }
1.60 frystyk 1215: break;
1.33 frystyk 1216:
1.81 frystyk 1217: case NEED_STREAM:
1.102 frystyk 1218: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_STREAM\n");
1.81 frystyk 1219: /*
1220: ** Create the stream pipe FROM the channel to the application.
1221: ** The target for the input stream pipe is set up using the
1222: ** stream stack.
1223: */
1.93 frystyk 1224: {
1225: HTStream * target = FTP_DIR(data) ?
1226: HTFTPDir_new(request, ctrl->server, data->type) :
1227: HTStreamStack(HTAnchor_format(HTRequest_anchor(request)),
1228: HTRequest_outputFormat(request),
1229: HTRequest_outputStream(request),
1230: request, YES);
1231: HTNet_setReadStream(dnet, target);
1.104 ! frystyk 1232: HTRequest_setOutputConnected(request, YES);
1.81 frystyk 1233: }
1.93 frystyk 1234: data_is_active = YES;
1.81 frystyk 1235: ctrl->substate = NEED_BODY;
1.91 frystyk 1236: break;
1.23 frystyk 1237:
1.60 frystyk 1238: case NEED_BODY:
1.102 frystyk 1239: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_BODY\n");
1.93 frystyk 1240: if (data_is_active) {
1241: status = HTHost_read(HTNet_host(dnet), dnet);
1242: if (status == HT_WOULD_BLOCK)
1243: return HT_WOULD_BLOCK;
1244: else if (status == HT_LOADED || status == HT_CLOSED) {
1245: data->complete |= 1;
1246: if (data->complete >= 3)
1247: ctrl->substate = SUB_SUCCESS;
1248: else
1249: data_is_active = NO;
1250: } else {
1251: ctrl->substate = SUB_ERROR;
1252: data->stream_error = YES;
1253: }
1254: } else {
1255: status = HTHost_read(HTNet_host(cnet), cnet);
1256: if (status == HT_WOULD_BLOCK)
1257: return HT_WOULD_BLOCK;
1258: else if (status == HT_LOADED || status == HT_CLOSED) {
1259: if (ctrl->repcode/100 == 2) {
1260: data->complete |= 2;
1261: if (data->complete >= 3)
1262: ctrl->substate = SUB_SUCCESS;
1263: else
1264: data_is_active = YES;
1265: } else
1266: ctrl->substate = SUB_ERROR;
1267: } else
1268: ctrl->substate = SUB_ERROR;
1269: }
1270: break;
1.22 frystyk 1271:
1.60 frystyk 1272: case SUB_ERROR:
1.102 frystyk 1273: HTTRACE(PROT_TRACE, "FTP Get Data now in state SUB_ERROR\n");
1.95 frystyk 1274: HTRequest_addError(request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1275: NULL, 0, "HTFTPGetData");
1.60 frystyk 1276: ctrl->substate = 0;
1.77 frystyk 1277: HT_FREE(segment);
1.60 frystyk 1278: return HT_ERROR;
1.23 frystyk 1279: break;
1280:
1.60 frystyk 1281: case SUB_SUCCESS:
1.102 frystyk 1282: HTTRACE(PROT_TRACE, "FTP Get Data now in state SUB_SUCCESS\n");
1.60 frystyk 1283: ctrl->substate = 0;
1.77 frystyk 1284: HT_FREE(segment);
1.60 frystyk 1285: return HT_LOADED;
1.23 frystyk 1286: break;
1.1 timbl 1287: }
1288: }
1.23 frystyk 1289: }
1.1 timbl 1290:
1.23 frystyk 1291: /* ------------------------------------------------------------------------- */
1292:
1293: /* Retrieve File from Server as an atomic action.
1294: ** -----------------------------------------------
1.58 frystyk 1295: ** Given a hypertext address, this routine loads a document.
1.23 frystyk 1296: **
1297: ** On entry,
1.58 frystyk 1298: ** request This is the request structure
1299: ** returns HT_ERROR Error has occured in call back
1300: ** HT_OK Call back was OK
1301: */
1.91 frystyk 1302: PRIVATE int FTPEvent (SOCKET soc, void * pVoid, HTEventType type);
1303:
1304: PUBLIC int HTLoadFTP (SOCKET soc, HTRequest * request)
1.58 frystyk 1305: {
1.84 frystyk 1306: HTNet * cnet = HTRequest_net(request);
1307: ftp_ctrl * ctrl = NULL;
1308: ftp_data * data = NULL;
1309: HTParentAnchor * anchor = HTRequest_anchor(request);
1310: char * url = HTAnchor_physical(anchor);
1.23 frystyk 1311:
1.58 frystyk 1312: /*
1.60 frystyk 1313: ** Initiate a new FTP ctrl and data structure and bind to request structure
1.58 frystyk 1314: ** This is actually state FTP_BEGIN, but it can't be in the state
1315: ** machine as we need the structure first.
1316: */
1.102 frystyk 1317: HTTRACE(PROT_TRACE, "FTP......... Looking for `%s\'\n" _ url);
1.91 frystyk 1318: if ((ctrl = (ftp_ctrl *) HT_CALLOC(1, sizeof(ftp_ctrl))) == NULL ||
1319: (data = (ftp_data *) HT_CALLOC(1, sizeof(ftp_data))) == NULL)
1320: HT_OUTOFMEM("HTLoadFTP");
1321: ctrl->cmd = HTChunk_new(128);
1322: ctrl->state = FTP_BEGIN;
1323: ctrl->server = FTP_UNSURE;
1324: ctrl->dnet = HTNet_dup(cnet);
1.93 frystyk 1325: ctrl->cnet = cnet;
1.91 frystyk 1326: HTNet_setContext(cnet, ctrl);
1327: HTNet_setEventCallback(cnet, FTPEvent);
1.92 eric 1328: HTNet_setEventParam(cnet, ctrl);
1.98 frystyk 1329: HTNet_setRawBytesCount(ctrl->dnet, YES);
1.97 frystyk 1330:
1.92 eric 1331: /* for now, the dnet comes back to the same place
1332: ** - vestigial from when the callback was from the request object
1333: */
1334: HTNet_setContext(ctrl->dnet, data);
1335: HTNet_setEventCallback(ctrl->dnet, FTPEvent);
1336: HTNet_setEventParam(ctrl->dnet, ctrl);
1.91 frystyk 1337: return FTPEvent(soc, ctrl, HTEvent_BEGIN);
1338: }
1339:
1340: PRIVATE int FTPEvent (SOCKET soc, void * pVoid, HTEventType type)
1341: {
1.93 frystyk 1342: ftp_ctrl * ctrl = (ftp_ctrl *) pVoid;
1343: ftp_data * data = (ftp_data *) HTNet_context(ctrl->dnet);
1.91 frystyk 1344: int status = HT_ERROR;
1.93 frystyk 1345: HTNet * cnet = ctrl->cnet;
1.91 frystyk 1346: HTRequest * request = HTNet_request(cnet);
1347: HTParentAnchor * anchor = HTRequest_anchor(request);
1348: char * url = HTAnchor_physical(anchor);
1349:
1.97 frystyk 1350: HTHost *host = HTNet_host(cnet);
1351:
1352:
1.91 frystyk 1353: if (type == HTEvent_CLOSE) { /* Interrupted */
1.98 frystyk 1354: if (soc == HTNet_socket(cnet))
1355: FTPCleanup(request, HT_INTERRUPTED);
1.60 frystyk 1356: else
1.98 frystyk 1357: FTPCleanup(request, HT_LOADED);
1358: return HT_OK;
1359: } else if (type == HTEvent_TIMEOUT) {
1360: HTRequest_addError(request, ERR_FATAL, NO, HTERR_TIME_OUT,
1361: NULL, 0, "HTLoadHTTP");
1362: FTPCleanup(request, HT_TIMEOUT);
1.60 frystyk 1363: return HT_OK;
1.98 frystyk 1364:
1.60 frystyk 1365: } else {
1.93 frystyk 1366: ctrl = (ftp_ctrl *) HTNet_context(cnet); /* Get existing copy */
1367: data = (ftp_data *) HTNet_context(ctrl->dnet);
1.60 frystyk 1368: }
1.58 frystyk 1369:
1370: /* Now jump into the machine. We know the state from the previous run */
1371: while (1) {
1372: switch (ctrl->state) {
1.60 frystyk 1373: case FTP_BEGIN:
1.102 frystyk 1374: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_BEGIN\n");
1.100 frystyk 1375:
1376: /* Only handle GET requests for now */
1377: if (HTRequest_method(request) != METHOD_GET) {
1.102 frystyk 1378: HTTRACE(PROT_TRACE, "FTP Event... This module only supports the GET method\n");
1.100 frystyk 1379: ctrl->state = FTP_ERROR;
1380: break;
1381: }
1382:
1.95 frystyk 1383: HTFTPParseURL(request, url, ctrl, data);
1.97 frystyk 1384:
1.95 frystyk 1385: /* The following is added by Neil Griffin, GAIN Software */
1386:
1387: /*
1388: ** If the user hasn't specified a permanent transfer type, then
1389: ** use the transfer type specified at the end of the URL.
1390: */
1391: if (g_FTPTransferMode == FTP_DEFAULT_TRANSFER_MODE) {
1392: switch (data->type) {
1393: case 'a' : data->type = 'A'; break;
1394: case 'A' : data->type = 'A'; break;
1395: case 'i' : data->type = 'I'; break;
1396: case 'I' : data->type = 'I'; break;
1397: case 'd' : FTPListType(data, ctrl->server); break;
1398: case 'D' : FTPListType(data, ctrl->server); break;
1399: default : data->type = 'I'; break;
1400: }
1401:
1402: /* Otherwise, use the permanent transfer type specified by the user. */
1403: } else {
1404: switch (g_FTPTransferMode) {
1405: case FTP_ASCII_TRANSFER_MODE : data->type = 'A'; break;
1406: case FTP_BINARY_TRANSFER_MODE : data->type = 'I'; break;
1407: case FTP_DIR_TRANSFER_MODE : FTPListType(data, ctrl->server); break;
1408: default : data->type = 'I'; break;
1409: }
1410: }
1411:
1.102 frystyk 1412: HTTRACE(PROT_TRACE, "FTP Event... Transfer mode set to '%c'\n" _ data->type);
1.95 frystyk 1413:
1414: /*
1415: ** See if we can get any hints to what we might expect content wise.
1416: */
1417: if (!FTP_DIR(data)) HTBind_getAnchorBindings(anchor);
1.98 frystyk 1418:
1419: /* Ready for next state */
1420: ctrl->state = FTP_NEED_CCON;
1421: break;
1.60 frystyk 1422:
1.95 frystyk 1423: case FTP_NEED_CCON:
1.102 frystyk 1424: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_CONN\n");
1.104 ! frystyk 1425: status = HTHost_connect(host, cnet, url);
1.97 frystyk 1426: host = HTNet_host(cnet);
1.60 frystyk 1427: if (status == HT_OK) {
1.81 frystyk 1428:
1429: /*
1430: ** Check the protocol class to see if we have connected to a
1431: ** the right class of server, in this case HTTP.
1432: */
1433: {
1434: char * s_class = HTHost_class(host);
1435: if (s_class && strcasecomp(s_class, "ftp")) {
1436: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1437: NULL, 0, "HTLoadNews");
1438: ctrl->state = FTP_ERROR;
1439: break;
1440: }
1441: HTHost_setClass(host, "ftp");
1442: }
1443:
1444: /* Check persistent connection */
1445: if (HTNet_persistent(cnet)) {
1446: ctrl->server = HTHost_version(host);
1.102 frystyk 1447: HTTRACE(PROT_TRACE, "FTP Server.. Cache says type %d server\n" _
1.81 frystyk 1448: ctrl->server);
1449: ctrl->reset = 1;
1450: } else
1.88 frystyk 1451: HTNet_setPersistent(cnet, YES, HT_TP_SINGLE);
1.23 frystyk 1452:
1.81 frystyk 1453: /*
1454: ** Create the stream pipe FROM the channel to the application.
1455: ** The target for the input stream pipe is set up using the
1456: ** stream stack.
1457: */
1.93 frystyk 1458: {
1459: HTStream * readstream = FTPStatus_new(request, ctrl, host);
1460: HTNet_setReadStream(cnet, readstream);
1461: }
1.23 frystyk 1462:
1.60 frystyk 1463: /*
1.81 frystyk 1464: ** Create the stream pipe TO the channel from the application
1465: ** and hook it up to the request object
1466: */
1467: {
1468: HTOutputStream * output = HTNet_getOutput(cnet, NULL, 0);
1469: HTRequest_setInputStream(request, (HTStream *) output);
1470: }
1471:
1472: /*
1.60 frystyk 1473: ** Set up concurrent read/write if this request isn't the
1474: ** source for a PUT or POST. As source we don't start reading
1475: ** before all destinations are ready. If destination then
1476: ** register the input stream and get ready for read
1477: */
1478: if (HTRequest_isPostWeb(request)) {
1.93 frystyk 1479: HTEvent * event = HTNet_event(cnet);
1480: HTEvent_register(HTNet_socket(cnet), HTEvent_READ, event);
1.60 frystyk 1481: HTRequest_linkDestination(request);
1482: }
1483:
1484: ctrl->state = FTP_NEED_LOGIN;
1.88 frystyk 1485: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.60 frystyk 1486: return HT_OK;
1487: else
1488: ctrl->state = FTP_ERROR; /* Error or interrupt */
1489: break;
1490:
1491: case FTP_NEED_LOGIN:
1.102 frystyk 1492: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_LOGIN\n");
1.60 frystyk 1493: status = HTFTPLogin(request, cnet, ctrl);
1494: if (status == HT_WOULD_BLOCK) return HT_OK;
1495: ctrl->state = (status == HT_OK) ? FTP_NEED_DCON : FTP_ERROR;
1496: break;
1497:
1498: case FTP_NEED_DCON:
1.102 frystyk 1499: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_DCON\n");
1.60 frystyk 1500: status = HTFTPDataConnection(request, cnet, ctrl, data);
1501: if (status == HT_WOULD_BLOCK) return HT_OK;
1502: if (status == HT_OK)
1503: ctrl->state = (data->type=='N') ?
1504: FTP_NEED_SERVER : FTP_NEED_DATA;
1505: else
1506: ctrl->state = FTP_ERROR;
1507: break;
1508:
1509: case FTP_NEED_DATA:
1.102 frystyk 1510: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_DATA\n");
1.63 frystyk 1511: status = HTFTPGetData(request, cnet, soc, ctrl, data);
1.60 frystyk 1512: if (status == HT_WOULD_BLOCK) return HT_OK;
1513: if (status == HT_LOADED)
1514: ctrl->state = FTP_SUCCESS;
1515: else if (status == HT_OK)
1516: ctrl->state = FTP_NEED_DCON;
1.76 frystyk 1517: else if (!FTP_DIR(data) && !data->stream_error) {
1.60 frystyk 1518: FTPListType(data, ctrl->server);
1519: ctrl->state = FTP_NEED_SERVER; /* Try a dir instead? */
1520: } else
1521: ctrl->state = FTP_ERROR;
1522: break;
1.23 frystyk 1523:
1.60 frystyk 1524: case FTP_NEED_SERVER:
1.102 frystyk 1525: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_SERVER\n");
1.60 frystyk 1526: status = HTFTPServerInfo(request, cnet, ctrl, data);
1.95 frystyk 1527: if (status == HT_WOULD_BLOCK) return HT_OK;
1.60 frystyk 1528: ctrl->state = FTP_NEED_DATA;
1529: break;
1530:
1531: case FTP_SUCCESS:
1.102 frystyk 1532: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_SUCCESS\n");
1.95 frystyk 1533: FTPCleanup(request, HT_LOADED);
1.60 frystyk 1534: return HT_OK;
1535: break;
1536:
1537: case FTP_ERROR:
1.102 frystyk 1538: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_ERROR\n");
1.95 frystyk 1539: FTPCleanup(request, HT_ERROR);
1.60 frystyk 1540: return HT_OK;
1541: break;
1.23 frystyk 1542: }
1.60 frystyk 1543: } /* End of while(1) */
1.23 frystyk 1544: }
1.22 frystyk 1545:
1.95 frystyk 1546: PUBLIC void HTFTP_setTransferMode(FTPTransferMode mode)
1547: {
1548: g_FTPTransferMode = mode;
1549: }
1550:
1551: PUBLIC FTPTransferMode HTFTP_transferMode (void)
1552: {
1553: return g_FTPTransferMode;
1.97 frystyk 1554: }
1555:
1556: PUBLIC void HTFTP_setControlMode (FTPControlMode mode)
1557: {
1558: g_FTPControlMode = mode;
1559: }
1560:
1561: PUBLIC FTPControlMode HTFTP_controlMode (void)
1562: {
1563: return g_FTPControlMode;
1.95 frystyk 1564: }
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