Annotation of libwww/Library/src/HTFTP.c, revision 1.107
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.
1.107 ! kahan 6: ** @(#) $Id: HTFTP.c,v 1.106 1999/08/02 22:59:46 raff 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.
1.107 ! kahan 55: ** Jan 2000 JB Joe Bester - Fixed the protocol bug that appeared after
! 56: ** after the CERT advisory warning on wu. Added code
! 57: ** to do an incremental streaming of FTP data.
! 58: **
1.22 frystyk 59: ** Notes:
60: ** Portions Copyright 1994 Trustees of Dartmouth College
61: ** Code for recognizing different FTP servers and
62: ** parsing "ls -l" output taken from Macintosh Fetch
63: ** program with permission from Jim Matthews,
64: ** Dartmouth Software Development Team.
1.23 frystyk 65: */
1.1 timbl 66:
1.22 frystyk 67: /* Library include files */
1.96 frystyk 68: #include "wwwsys.h"
1.81 frystyk 69: #include "WWWUtil.h"
70: #include "WWWCore.h"
1.93 frystyk 71: #include "WWWStream.h"
72: #include "WWWTrans.h"
1.101 frystyk 73: #include "WWWFile.h"
1.58 frystyk 74: #include "HTReqMan.h"
1.98 frystyk 75: #include "HTNetMan.h"
1.63 frystyk 76: #include "HTFTPDir.h"
1.22 frystyk 77: #include "HTFTP.h" /* Implemented here */
78:
1.60 frystyk 79: #ifndef FTP_PORT
80: #define FTP_PORT 21
81: #define FTP_DATA 20
1.1 timbl 82: #endif
1.60 frystyk 83:
84: #define WWW_FTP_CLIENT "libwww@" /* If can't get user-info, use this */
85: #define FTP_DIR(me) ((me)->type=='L' || (me)->type=='N')
1.1 timbl 86:
1.58 frystyk 87: /*
88: ** Local context structure used in the HTNet object.
89: */
1.45 frystyk 90: typedef enum _HTFTPState {
1.60 frystyk 91: FTP_SUCCESS = -2,
92: FTP_ERROR = -1,
1.58 frystyk 93: FTP_BEGIN = 0,
94: FTP_NEED_CCON, /* Control connection */
1.60 frystyk 95: FTP_NEED_LOGIN,
1.58 frystyk 96: FTP_NEED_DCON, /* Data connection */
1.60 frystyk 97: FTP_NEED_DATA,
98: FTP_NEED_SERVER /* For directory listings */
1.39 frystyk 99: } HTFTPState;
100:
1.58 frystyk 101: typedef struct _ftp_ctrl {
1.60 frystyk 102: HTChunk * cmd;
103: int repcode;
104: char * reply;
105: char * uid;
1.58 frystyk 106: char * passwd;
1.60 frystyk 107: char * account;
1.58 frystyk 108: HTFTPState state; /* State of the connection */
1.60 frystyk 109: int substate; /* For hierarchical states */
110: BOOL sent; /* Read or write command */
111: BOOL cwd; /* Done cwd */
112: BOOL reset; /* Expect greeting */
1.63 frystyk 113: FTPServerType server; /* Type of server */
1.93 frystyk 114: HTNet * cnet; /* Control connection */
1.60 frystyk 115: HTNet * dnet; /* Data connection */
1.95 frystyk 116: BOOL alreadyLoggedIn;
1.58 frystyk 117: } ftp_ctrl;
1.39 frystyk 118:
1.58 frystyk 119: typedef struct _ftp_data {
1.60 frystyk 120: char host[30]; /* Host to contact for data */
121: char * file; /* File or dir name */
122: char * offset; /* offset into file */
123: BOOL pasv; /* Active or passive */
124: char type; /* 'A', 'I', 'L'(IST), 'N'(LST) */
1.93 frystyk 125: int complete; /* Check if both ctrl and data is loaded */
1.76 frystyk 126: BOOL stream_error;
1.58 frystyk 127: } ftp_data;
1.39 frystyk 128:
1.60 frystyk 129: struct _HTStream {
1.79 frystyk 130: const HTStreamClass * isa;
1.60 frystyk 131: HTStream * target;
132: HTRequest * request;
133: ftp_ctrl * ctrl;
1.80 frystyk 134: HTEOLState state;
1.60 frystyk 135: HTChunk * welcome;
1.62 frystyk 136: BOOL junk; /* For too long lines */
1.60 frystyk 137: BOOL first_line;
1.63 frystyk 138: char buffer[MAX_FTP_LINE+1];
1.60 frystyk 139: int buflen;
1.92 eric 140: HTHost * host;
1.60 frystyk 141: };
142:
1.81 frystyk 143: struct _HTInputStream {
144: const HTInputStreamClass * isa;
145: };
146:
1.104 frystyk 147: /* Determine whether we should use passive or active data TCP connections */
1.60 frystyk 148: typedef enum _FTPDataCon {
149: FTP_DATA_PASV = 0x1,
150: FTP_DATA_PORT = 0x2
151: } FTPDataCon;
152:
1.104 frystyk 153: PRIVATE FTPDataCon FTPMode = FTP_DATA_PORT;
1.39 frystyk 154:
1.95 frystyk 155: /* Added by Neil Griffin */
156: PRIVATE FTPTransferMode g_FTPTransferMode = FTP_DEFAULT_TRANSFER_MODE;
1.97 frystyk 157: PRIVATE FTPControlMode g_FTPControlMode = FTP_DEFAULT_CONTROL_MODE;
1.95 frystyk 158:
1.23 frystyk 159: /* ------------------------------------------------------------------------- */
1.60 frystyk 160: /* FTP Status Line Stream */
1.22 frystyk 161: /* ------------------------------------------------------------------------- */
1.60 frystyk 162:
163: /* FTPCleanup
164: ** ----------
165: ** This function closes the connection and frees memory.
166: ** Returns YES on OK, else NO
167: */
1.65 frystyk 168: PRIVATE int FTPCleanup (HTRequest * request, int status)
1.60 frystyk 169: {
1.75 frystyk 170: if (request) {
1.84 frystyk 171: HTNet * cnet = HTRequest_net(request);
172: ftp_ctrl * ctrl = (ftp_ctrl *) HTNet_context(cnet);
173: HTStream * input = HTRequest_inputStream(request);
1.98 frystyk 174:
175: if (status == HT_INTERRUPTED) {
176: HTAlertCallback * cbf = HTAlert_find(HT_PROG_INTERRUPT);
177: if (cbf) (*cbf)(request, HT_PROG_INTERRUPT,
178: HT_MSG_NULL, NULL, NULL, NULL);
179: } else if (status == HT_TIMEOUT) {
180: HTAlertCallback * cbf = HTAlert_find(HT_PROG_TIMEOUT);
181: if (cbf) (*cbf)(request, HT_PROG_TIMEOUT,
182: HT_MSG_NULL, NULL, NULL, NULL);
183: } else if (status == HT_LOADED) {
184: HTAlertCallback * cbf = HTAlert_find(HT_PROG_DONE);
185: if (cbf) (*cbf)(request, HT_PROG_DONE,
186: HT_MSG_NULL, NULL, NULL, NULL);
187: }
188:
1.93 frystyk 189: /* Free control stream with data TO network */
1.84 frystyk 190: if (!HTRequest_isDestination(request) && input) {
1.75 frystyk 191: if (status == HT_INTERRUPTED)
1.84 frystyk 192: (*input->isa->abort)(input, NULL);
1.75 frystyk 193: else
1.84 frystyk 194: (*input->isa->_free)(input);
1.75 frystyk 195: }
196:
1.104 frystyk 197: /* Remove the request object and our own context structure for ftp */
1.84 frystyk 198: if (cnet && ctrl) {
1.75 frystyk 199: HTNet * dnet = ctrl->dnet;
1.84 frystyk 200: ftp_data * data = (ftp_data *) HTNet_context(dnet);
1.75 frystyk 201: HTChunk_delete(ctrl->cmd);
1.77 frystyk 202: HT_FREE(ctrl->reply);
203: HT_FREE(ctrl->uid);
204: HT_FREE(ctrl->passwd);
205: HT_FREE(ctrl->account);
206: HT_FREE(ctrl);
1.84 frystyk 207: if (dnet && data) {
1.77 frystyk 208: HT_FREE(data->file);
209: HT_FREE(data);
1.75 frystyk 210: }
1.104 frystyk 211:
1.98 frystyk 212: /* See if we got a content length */
213: if (status == HT_LOADED)
214: HTAnchor_setLength(HTRequest_anchor(request), HTNet_bytesRead(dnet));
215:
1.104 frystyk 216: /* Delete the data net object */
217: HTChannel_deleteInput(HTNet_channel(dnet), status);
218: HTChannel_deleteOutput(HTNet_channel(dnet), status);
219: HTNet_delete(dnet, HT_IGNORE);
220:
1.75 frystyk 221: }
222: HTNet_delete(cnet, status);
223: return YES;
1.60 frystyk 224: }
1.75 frystyk 225: return NO;
1.60 frystyk 226: }
227:
228: /* ScanResponse
229: ** ------------
230: ** Analyzes the response from the FTP server.
231: ** Returns HT_LOADED if OK, HT_OK if more, HT_ERROR if error
232: ** the control connection.
1.33 frystyk 233: */
1.65 frystyk 234: PRIVATE int ScanResponse (HTStream * me)
1.33 frystyk 235: {
1.60 frystyk 236: int reply = 0;
237: char cont = '\0';
238: char *ptr = me->buffer+4;
239: *(me->buffer+me->buflen) = '\0';
1.95 frystyk 240: /* begin _GM_ */
241: /* Note: libwww bug ID: GM3 */
242: me->ctrl->alreadyLoggedIn = NO;
243: /* end _GM_ */
1.94 frystyk 244: if (isdigit((int) *(me->buffer))) sscanf(me->buffer, "%d%c", &reply, &cont);
1.60 frystyk 245: if (me->first_line) {
1.102 frystyk 246: HTTRACE(PROT_TRACE, "FTP Rx...... `%s\'\n" _ me->buffer);
1.60 frystyk 247: if (!reply) return HT_ERROR;
248: me->first_line = NO;
249: me->ctrl->repcode = reply;
250: StrAllocCopy(me->ctrl->reply, ptr);
1.95 frystyk 251: /* begin _GM_ */
252: /* Note: libwww bug ID: GM3 */
1.103 frystyk 253: if ( (reply == 530) && (HTStrCaseStr(me->buffer, "already") != NULL) ) {
1.95 frystyk 254: me->ctrl->alreadyLoggedIn = YES;
255: } else {
256: me->ctrl->alreadyLoggedIn = NO;
257: }
258: /* end _GM_ */
1.60 frystyk 259: } else {
1.73 frystyk 260: HTChunk_puts(me->welcome, ptr);
261: HTChunk_putc(me->welcome, '\n');
1.33 frystyk 262: }
1.60 frystyk 263: me->buflen = 0;
1.68 frystyk 264: me->state = EOL_BEGIN;
1.60 frystyk 265: if (cont != '-') {
266: me->first_line = YES;
267: return HT_LOADED;
1.33 frystyk 268: }
1.60 frystyk 269: return HT_OK;
1.33 frystyk 270: }
271:
1.60 frystyk 272: /*
273: ** Searches for FTP header line until buffer fills up or a CRLF or LF
274: ** is found
1.23 frystyk 275: */
1.79 frystyk 276: PRIVATE int FTPStatus_put_block (HTStream * me, const char * b, int l)
1.92 eric 277: {
1.60 frystyk 278: int status;
1.93 frystyk 279: HTHost_setConsumed(me->host, l);
1.60 frystyk 280: while (l-- > 0) {
281: if (me->state == EOL_FCR) {
282: if (*b == LF) {
1.62 frystyk 283: if (!me->junk) {
1.93 frystyk 284: if ((status = ScanResponse(me)) != HT_OK) return status;
1.62 frystyk 285: } else {
286: me->buflen = 0;
287: me->junk = NO;
288: }
1.60 frystyk 289: }
290: } else if (*b == CR) {
291: me->state = EOL_FCR;
292: } else if (*b == LF) {
1.62 frystyk 293: if (!me->junk) {
1.93 frystyk 294: if ((status = ScanResponse(me)) != HT_OK) return status;
1.62 frystyk 295: } else {
296: me->buflen = 0;
297: me->junk = NO;
298: }
1.60 frystyk 299: } else {
300: *(me->buffer+me->buflen++) = *b;
1.63 frystyk 301: if (me->buflen >= MAX_FTP_LINE) {
1.102 frystyk 302: HTTRACE(PROT_TRACE, "FTP Status.. Line too long - chopped\n");
1.62 frystyk 303: me->junk = YES;
304: if ((status = ScanResponse(me)) != HT_OK) {
305: me->junk = NO;
306: return status;
307: }
1.23 frystyk 308: }
309: }
1.60 frystyk 310: b++;
1.25 frystyk 311: }
1.60 frystyk 312: return HT_OK;
1.25 frystyk 313: }
314:
1.79 frystyk 315: PRIVATE int FTPStatus_put_string (HTStream * me, const char * s)
1.60 frystyk 316: {
317: return FTPStatus_put_block(me, s, (int) strlen(s));
318: }
1.25 frystyk 319:
1.65 frystyk 320: PRIVATE int FTPStatus_put_character (HTStream * me, char c)
1.25 frystyk 321: {
1.60 frystyk 322: return FTPStatus_put_block(me, &c, 1);
323: }
1.25 frystyk 324:
1.65 frystyk 325: PRIVATE int FTPStatus_flush (HTStream * me)
1.60 frystyk 326: {
327: return (*me->target->isa->flush)(me->target);
1.23 frystyk 328: }
1.22 frystyk 329:
1.65 frystyk 330: PRIVATE int FTPStatus_free (HTStream * me)
1.22 frystyk 331: {
1.60 frystyk 332: int status = HT_OK;
333: if (me->target) {
334: if ((status = (*me->target->isa->_free)(me->target)) == HT_WOULD_BLOCK)
335: return HT_WOULD_BLOCK;
1.22 frystyk 336: }
1.73 frystyk 337: HTChunk_delete(me->welcome);
1.77 frystyk 338: HT_FREE(me);
1.60 frystyk 339: return HT_OK;
1.22 frystyk 340: }
341:
1.68 frystyk 342: PRIVATE int FTPStatus_abort (HTStream * me, HTList * e)
1.22 frystyk 343: {
1.60 frystyk 344: if (me->target)
345: (*me->target->isa->abort)(me->target, e);
1.73 frystyk 346: HTChunk_delete(me->welcome);
1.77 frystyk 347: HT_FREE(me);
1.102 frystyk 348: HTTRACE(PROT_TRACE, "FTPStatus... ABORTING...\n");
1.60 frystyk 349: return HT_ERROR;
1.22 frystyk 350: }
351:
1.60 frystyk 352: /* FTPStatus Stream
353: ** -----------------
1.22 frystyk 354: */
1.79 frystyk 355: PRIVATE const HTStreamClass FTPStatusClass =
1.60 frystyk 356: {
357: "FTPStatus",
358: FTPStatus_flush,
359: FTPStatus_free,
360: FTPStatus_abort,
361: FTPStatus_put_character,
362: FTPStatus_put_string,
363: FTPStatus_put_block
364: };
365:
1.92 eric 366: PRIVATE HTStream * FTPStatus_new (HTRequest * request, ftp_ctrl * ctrl, HTHost * host)
1.60 frystyk 367: {
1.77 frystyk 368: HTStream * me;
369: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
370: HT_OUTOFMEM("FTPStatus_new");
1.60 frystyk 371: me->isa = &FTPStatusClass;
372: me->request = request;
373: me->first_line = YES;
1.73 frystyk 374: me->welcome = HTChunk_new(256);
1.60 frystyk 375: me->ctrl = ctrl;
376: me->state = EOL_BEGIN;
1.92 eric 377: me->host = host;
1.60 frystyk 378: return me;
1.22 frystyk 379: }
380:
1.60 frystyk 381: /* ------------------------------------------------------------------------- */
382: /* FTP Client Functions for managing control and data connections */
383: /* ------------------------------------------------------------------------- */
1.22 frystyk 384:
1.60 frystyk 385: PRIVATE int SendCommand (HTRequest *request, ftp_ctrl *ctrl,
386: char *token, char *pars)
387: {
388: int len = strlen(token) + (pars ? strlen(pars)+1:0) + 2;
1.84 frystyk 389: HTStream * input = HTRequest_inputStream(request);
1.73 frystyk 390: HTChunk_clear(ctrl->cmd);
391: HTChunk_ensure(ctrl->cmd, len);
1.60 frystyk 392: if (pars && *pars)
1.73 frystyk 393: sprintf(HTChunk_data(ctrl->cmd), "%s %s%c%c", token, pars, CR, LF);
1.60 frystyk 394: else
1.73 frystyk 395: sprintf(HTChunk_data(ctrl->cmd), "%s%c%c", token, CR, LF);
1.102 frystyk 396: HTTRACE(PROT_TRACE, "FTP Tx...... %s" _ HTChunk_data(ctrl->cmd));
1.84 frystyk 397: return (*input->isa->put_block)(input, HTChunk_data(ctrl->cmd), len);
1.60 frystyk 398: }
399:
400: /* HTFTPParseURL
401: ** -------------
402: ** Scan URL for uid and passwd, and any data type indication. The
403: ** expected format is [user[:password]@]host[:port].
404: ** If no values are found then use defaults.
405: ** Returns YES if OK, else NO
1.22 frystyk 406: */
1.83 frystyk 407: PRIVATE BOOL HTFTPParseURL (HTRequest * request,
408: char *url, ftp_ctrl *ctrl, ftp_data *data)
1.22 frystyk 409: {
1.60 frystyk 410: char *login = HTParse(url, "", PARSE_HOST);
411: char *path = HTParse(url, "", PARSE_PATH+PARSE_PUNCTUATION);
412: char *ptr = strchr(login, '@');
413: if (ptr) { /* Uid and/or passwd specified */
414: char *passwd;
415: *ptr = '\0';
416: if ((passwd = strchr(login, ':'))) { /* Passwd specified */
417: *passwd++ = '\0';
418: HTUnEscape(passwd);
419: StrAllocCopy(ctrl->passwd, passwd);
1.22 frystyk 420: }
1.60 frystyk 421: HTUnEscape(login);
422: StrAllocCopy(ctrl->uid, login);
1.97 frystyk 423: } else if (g_FTPControlMode & FTP_ALWAYS_ASK_UID_PW) {
424: ctrl->uid=NULL;
425: ctrl->passwd=NULL;
426: } else { /* Use anonymous */
1.83 frystyk 427: HTUserProfile * up = HTRequest_userProfile(request);
1.97 frystyk 428: const char * mailaddress = HTUserProfile_email(up);
1.60 frystyk 429: StrAllocCopy(ctrl->uid, "anonymous");
430: if (mailaddress)
431: StrAllocCopy(ctrl->passwd, mailaddress);
432: else
433: StrAllocCopy(ctrl->passwd, WWW_FTP_CLIENT);
1.22 frystyk 434: }
1.102 frystyk 435: HTTRACE(PROT_TRACE, "FTPParse.... uid `%s\' pw `%s\'\n" _
1.104 frystyk 436: ctrl->uid ? ctrl->uid : "<null>" _
437: ctrl->passwd ? ctrl->passwd : "<null>");
1.60 frystyk 438:
1.104 frystyk 439: /*
440: ** Look for any type in the URI. If not 'type' parameter then look for
441: ** trailing slash.
442: */
443: if ((ptr = strchr(path, ';')) != NULL) {
1.60 frystyk 444: *ptr = '\0';
445: if (strncasecomp(ptr, ";type=", 6)) /* Look for type */
446: data->type = TOUPPER(*(ptr+6));
447: else if (*(ptr-1) == '/')
1.104 frystyk 448: data->type = 'D';
1.60 frystyk 449: } else if (*(path+strlen(path)-1) == '/') {
450: *(path+strlen(path)-1) = '\0';
1.104 frystyk 451: data->type = 'D';
1.60 frystyk 452: }
1.102 frystyk 453: HTTRACE(PROT_TRACE, "FTPParse.... Datatype %c\n" _ data->type ? data->type : '?');
1.60 frystyk 454: StrAllocCopy(data->file, path);
455: data->offset = data->file;
1.77 frystyk 456: HT_FREE(login);
457: HT_FREE(path);
1.60 frystyk 458: return YES;
1.22 frystyk 459: }
460:
1.60 frystyk 461: /* Use LIST or NLST
462: ** ----------------
463: ** This function sets the type field for what type of list we can use
464: ** Returns YES if OK, else NO
465: */
1.63 frystyk 466: PRIVATE BOOL FTPListType (ftp_data * data, FTPServerType type)
1.60 frystyk 467: {
468: if (!data) return NO;
469: switch (type) {
470: case FTP_GENERIC: data->type='N'; break;
471: case FTP_MACHTEN: data->type='L'; break;
472: case FTP_UNIX: data->type='L'; break;
473: case FTP_VMS: data->type='L'; break;
474: case FTP_CMS: data->type='N'; break;
475: case FTP_DCTS: data->type='N'; break;
476: case FTP_TCPC: data->type='N'; break;
477: case FTP_PETER_LEWIS: data->type='L'; break;
478: case FTP_NCSA: data->type='N'; break;
479: case FTP_WINNT: data->type='L'; break;
480: default: data->type='N'; break;
481: }
482: return YES;
483: }
484:
485: /* Open a Data socket for listening on
486: ** -----------------------------------
487: ** Set up a port to listen for data
488: ** Returns YES if OK, else NO
1.22 frystyk 489: */
1.104 frystyk 490: PRIVATE BOOL AcceptDataSocket (HTNet *cnet, HTNet *dnet, ftp_data *data)
1.22 frystyk 491: {
1.104 frystyk 492: if (HTHost_listen(NULL, dnet, "ftp://localhost:0") == HT_ERROR)
493: return NO;
1.22 frystyk 494:
1.104 frystyk 495: /*
496: ** Now we must find out who we are to tell the other guy
497: ** We have to get the local IP interface from the control connection as
498: ** this is not yet set in the unaccepted data socket
499: */
1.60 frystyk 500: {
1.104 frystyk 501: SockA local_port, local_host;
502: int addr_size = sizeof(local_port);
503: memset((void *) &local_host, '\0', addr_size);
504: memset((void *) &local_port, '\0', addr_size);
505: if (getsockname(HTNet_socket(cnet),
506: (struct sockaddr *) &local_host, &addr_size) < 0 ||
507: getsockname(HTNet_socket(dnet),
508: (struct sockaddr *) &local_port, &addr_size) < 0) {
1.93 frystyk 509: HTRequest_addSystemError(HTNet_request(dnet), ERR_FATAL, socerrno,
1.68 frystyk 510: NO, "getsockname");
1.60 frystyk 511: return NO;
1.22 frystyk 512: }
1.104 frystyk 513: HTTRACE(PROT_TRACE, "FTP......... This host is `%s\'\n" _ HTInetString(&local_host));
1.60 frystyk 514: {
1.104 frystyk 515: u_long addr = local_host.sin_addr.s_addr;
516: u_short port = local_port.sin_port;
1.60 frystyk 517: sprintf(data->host, "%d,%d,%d,%d,%d,%d",
518: (int)*((unsigned char *)(&addr)+0),
519: (int)*((unsigned char *)(&addr)+1),
520: (int)*((unsigned char *)(&addr)+2),
521: (int)*((unsigned char *)(&addr)+3),
522: (int)*((unsigned char *)(&port)+0),
523: (int)*((unsigned char *)(&port)+1));
1.22 frystyk 524: }
525: }
1.60 frystyk 526: return YES;
1.22 frystyk 527: }
528:
1.60 frystyk 529: /* HTFTPLogin
530: ** -----------
531: ** This function makes a login to a ftp-server. It takes the user name
532: ** and passwd specified in ctrl->user and if that fails or an additional
533: ** account is needed, the user is prompted.
534: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.22 frystyk 535: */
1.60 frystyk 536: PRIVATE int HTFTPLogin (HTRequest *request, HTNet *cnet, ftp_ctrl *ctrl)
1.22 frystyk 537: {
1.60 frystyk 538: int status;
539: typedef enum _state {
540: SUB_ERROR = -2,
541: SUB_SUCCESS = -1,
542: NEED_SELECT = 0,
543: NEED_GREETING,
544: NEED_REIN,
545: NEED_UID,
546: NEED_PASSWD,
547: NEED_ACCOUNT,
548: PROMPT_USER
549: } state;
550:
551: /* Jump into a second level state machine */
552: while (1) {
553: switch ((state) ctrl->substate) {
1.99 frystyk 554: case NEED_SELECT:
555: {
556: HTAlertCallback * cbf = HTAlert_find(HT_PROG_LOGIN);
557: if (cbf) (*cbf)(request, HT_PROG_LOGIN, HT_MSG_NULL, NULL, NULL, NULL);
1.104 frystyk 558: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_SELECT\n");
1.99 frystyk 559: ctrl->substate = ctrl->reset ? NEED_REIN : NEED_GREETING;
560: }
1.60 frystyk 561: break;
562:
563: case NEED_GREETING:
1.104 frystyk 564: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_GREETING\n");
1.93 frystyk 565: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 566: if (status == HT_WOULD_BLOCK)
567: return HT_WOULD_BLOCK;
568: else if (status == HT_LOADED) {
1.66 frystyk 569: if (ctrl->repcode/100 == 2) {
570: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
571: NEED_UID : PROMPT_USER;
1.95 frystyk 572: } else {
1.60 frystyk 573: ctrl->substate = SUB_ERROR;
1.95 frystyk 574: }
575: } else {
1.60 frystyk 576: ctrl->substate = SUB_ERROR;
1.95 frystyk 577: }
1.60 frystyk 578: break;
579:
580: case NEED_REIN:
1.104 frystyk 581: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_REIN\n");
1.60 frystyk 582: if (!ctrl->sent) {
583: status = SendCommand(request, ctrl, "REIN", NULL);
584: if (status == HT_WOULD_BLOCK)
585: return HT_WOULD_BLOCK;
586: else if (status == HT_ERROR)
587: ctrl->substate = SUB_ERROR;
588: ctrl->sent = YES;
589: } else {
1.93 frystyk 590: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 591: if (status == HT_WOULD_BLOCK)
592: return HT_WOULD_BLOCK;
593: else if (status == HT_LOADED) {
1.104 frystyk 594: /*
595: ** If the FTP server doesn't support the REIN command, then
596: ** the return code will be 502
597: */
1.95 frystyk 598: if ((ctrl->repcode/100 == 2) || (ctrl->repcode == 502)) {
1.66 frystyk 599: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
600: NEED_UID : PROMPT_USER;
1.95 frystyk 601: } else {
1.60 frystyk 602: ctrl->substate = SUB_SUCCESS; /* hope the best */
1.95 frystyk 603: }
604: } else {
1.60 frystyk 605: ctrl->substate = SUB_ERROR;
1.95 frystyk 606: }
1.60 frystyk 607: ctrl->sent = NO;
1.22 frystyk 608: }
1.60 frystyk 609: break;
610:
611: case NEED_UID:
1.104 frystyk 612: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_UID\n");
1.60 frystyk 613: if (!ctrl->sent) {
614: status = SendCommand(request, ctrl, "USER", ctrl->uid);
615: if (status == HT_WOULD_BLOCK)
616: return HT_WOULD_BLOCK;
617: else if (status == HT_ERROR)
618: ctrl->substate = SUB_ERROR;
619: ctrl->sent = YES;
1.22 frystyk 620: } else {
1.93 frystyk 621: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 622: if (status == HT_WOULD_BLOCK)
623: return HT_WOULD_BLOCK;
624: else if (status == HT_LOADED) {
625: int code = ctrl->repcode/100;
626: if (code == 2) /* Logged in w/o passwd! */
627: ctrl->substate = SUB_SUCCESS;
1.66 frystyk 628: else if (code == 3) { /* Password demanded */
629: ctrl->substate = (ctrl->passwd && *ctrl->passwd) ?
630: NEED_PASSWD : PROMPT_USER;
1.95 frystyk 631: /* begin _GM_ */
632: /* Note: libwww bug ID: GM3 */
633: /* } else if (ctrl->repcode == 530) */
634: /* ctrl->substate = PROMPT_USER;*/ /* User unknown */
635: } else if (ctrl->repcode == 530) {
636: if (ctrl->alreadyLoggedIn == YES) {
637: ctrl->substate = SUB_SUCCESS;
1.104 frystyk 638: HTTRACE(PROT_TRACE, "FTP Login... Already logged in\n");
1.95 frystyk 639: } else {
640: ctrl->substate = PROMPT_USER;
1.104 frystyk 641: HTTRACE(PROT_TRACE, "FTP Login... User Unknown\n");
1.95 frystyk 642: }
643: }
644: /* end _GM_ */
1.60 frystyk 645: else
646: ctrl->substate = SUB_ERROR;
647: } else
648: ctrl->substate = SUB_ERROR;
649: ctrl->sent = NO;
1.22 frystyk 650: }
1.60 frystyk 651: break;
1.1 timbl 652:
1.60 frystyk 653: case NEED_PASSWD:
1.104 frystyk 654: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_PASSWD\n");
1.60 frystyk 655: if (!ctrl->sent) {
656: status = SendCommand(request, ctrl, "PASS", ctrl->passwd);
657: if (status == HT_WOULD_BLOCK)
658: return HT_WOULD_BLOCK;
659: else if (status == HT_ERROR)
660: ctrl->substate = SUB_ERROR;
661: ctrl->sent = YES;
662: } else {
1.93 frystyk 663: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 664: if (status == HT_WOULD_BLOCK)
665: return HT_WOULD_BLOCK;
666: else if (status == HT_LOADED) {
667: int code = ctrl->repcode/100;
668: if (code == 2) /* Logged in with passwd */
669: ctrl->substate = SUB_SUCCESS;
1.70 frystyk 670: else if (code == 3) { /* Account required */
671: HTAlertCallback *cbf = HTAlert_find(HT_A_PROMPT);
672: HTAlertPar * reply = HTAlert_newReply();
673: if (cbf && (*cbf)(request, HT_A_PROMPT,
674: HT_MSG_ACCOUNT, NULL, NULL, reply)) {
675: ctrl->account = HTAlert_replyMessage(reply);
1.60 frystyk 676: ctrl->substate = NEED_ACCOUNT;
1.70 frystyk 677: } else
1.60 frystyk 678: ctrl->substate = SUB_ERROR;
1.70 frystyk 679: HTAlert_deleteReply(reply);
1.60 frystyk 680: } else if (ctrl->repcode == 530)
681: ctrl->substate = PROMPT_USER;
682: else
683: ctrl->substate = SUB_ERROR;
684: } else
685: ctrl->substate = SUB_ERROR;
686: ctrl->sent = NO;
687: }
688: break;
1.1 timbl 689:
1.60 frystyk 690: case NEED_ACCOUNT:
1.104 frystyk 691: HTTRACE(PROT_TRACE, "FTP Login... now in state NEED_ACCOUNT\n");
1.60 frystyk 692: if (!ctrl->sent) {
693: status = SendCommand(request, ctrl, "ACCT", ctrl->account);
694: if (status == HT_WOULD_BLOCK)
695: return HT_WOULD_BLOCK;
696: else if (status == HT_ERROR)
697: ctrl->substate = SUB_ERROR;
698: ctrl->sent = YES;
1.23 frystyk 699: } else {
1.93 frystyk 700: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 701: if (status == HT_WOULD_BLOCK)
702: return HT_WOULD_BLOCK;
703: else if (status == HT_LOADED) {
704: int code = ctrl->repcode/100;
705: if (code == 2) /* Logged in with account */
706: ctrl->substate = SUB_SUCCESS;
707: else
708: ctrl->substate = SUB_ERROR; /* hopeless */
709: } else
710: ctrl->substate = SUB_ERROR;
711: ctrl->sent = NO;
1.1 timbl 712: }
1.60 frystyk 713: break;
1.1 timbl 714:
1.60 frystyk 715: case PROMPT_USER:
1.104 frystyk 716: HTTRACE(PROT_TRACE, "FTP Login... now in state PROMPT_USER\n");
1.60 frystyk 717: {
1.70 frystyk 718: HTAlertCallback *cbf = HTAlert_find(HT_A_USER_PW);
719: HTAlertPar * reply = HTAlert_newReply();
1.77 frystyk 720: HT_FREE(ctrl->uid);
721: HT_FREE(ctrl->passwd);
1.87 frystyk 722: if (cbf && (*cbf)(request, HT_A_USER_PW, HT_MSG_FTP_UID,
723: NULL, NULL, reply)){
1.70 frystyk 724: ctrl->uid = HTAlert_replyMessage(reply);
725: ctrl->passwd = HTAlert_replySecret(reply);
726: }
727: HTAlert_deleteReply(reply);
1.66 frystyk 728: if (ctrl->uid && *ctrl->uid && ctrl->passwd && *ctrl->passwd)
1.60 frystyk 729: ctrl->substate = NEED_UID;
730: else
731: ctrl->substate = SUB_ERROR;
732: }
733: break;
1.1 timbl 734:
1.60 frystyk 735: case SUB_ERROR:
1.104 frystyk 736: HTTRACE(PROT_TRACE, "FTP Login... now in state SUB_ERROR\n");
1.95 frystyk 737: HTRequest_addError(request, ERR_FATAL, NO,
738: HTERR_FTP_LOGIN_FAILURE, NULL, 0, "HTFTPLogin");
1.102 frystyk 739: HTTRACE(PROT_TRACE, "FTP......... Login failed\n");
1.60 frystyk 740: ctrl->substate = 0;
741: return HT_ERROR;
742: break;
1.23 frystyk 743:
1.60 frystyk 744: case SUB_SUCCESS:
1.104 frystyk 745: HTTRACE(PROT_TRACE, "FTP Login... now in state SUB_SUCCESS\n");
1.102 frystyk 746: HTTRACE(PROT_TRACE, "FTP......... Logged in as `%s\'\n" _ ctrl->uid);
1.60 frystyk 747: ctrl->substate = 0;
748: return HT_OK;
749: break;
1.23 frystyk 750: }
1.22 frystyk 751: }
752: }
753:
1.60 frystyk 754: /* HTFTPDataConnection
755: ** -------------------
756: ** Prepares a data connection to the server and initializes the
757: ** transfer mode.
758: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.1 timbl 759: */
1.60 frystyk 760: PRIVATE int HTFTPDataConnection (HTRequest * request, HTNet *cnet,
761: ftp_ctrl *ctrl, ftp_data *data)
1.1 timbl 762: {
1.60 frystyk 763: int status;
764: HTNet *dnet = ctrl->dnet;
765: typedef enum _state {
766: SUB_ERROR = -2,
767: SUB_SUCCESS = -1,
768: NEED_TYPE = 0,
769: NEED_SELECT,
770: NEED_PASV,
771: NEED_PORT
772: } state;
773:
774: /* Jump into a second level state machine */
775: while (1) {
776: switch ((state) ctrl->substate) {
777: case NEED_TYPE:
1.102 frystyk 778: HTTRACE(PROT_TRACE, "FTP Data.... now in state NEED_TYPE\n");
1.60 frystyk 779: if(!data->type|| data->pasv || data->type=='N' || data->type=='L'){
780: ctrl->substate = NEED_SELECT;
781: break;
782: }
783: if (!ctrl->sent) {
784: char type[2];
785: *type = data->type;
786: *(type+1) = '\0';
787: status = SendCommand(request, ctrl, "TYPE", type);
788: if (status == HT_WOULD_BLOCK)
789: return HT_WOULD_BLOCK;
790: else if (status == HT_ERROR)
791: ctrl->substate = SUB_ERROR;
792: ctrl->sent = YES;
793: } else {
1.93 frystyk 794: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 795: if (status == HT_WOULD_BLOCK)
796: return HT_WOULD_BLOCK;
797: else if (status == HT_LOADED) {
798: if (ctrl->repcode/100 == 2)
799: ctrl->substate = NEED_SELECT;
800: else
801: ctrl->substate = SUB_ERROR;
802: } else
803: ctrl->substate = SUB_ERROR;
804: ctrl->sent = NO;
805: }
806: break;
807:
808: case NEED_SELECT:
1.102 frystyk 809: HTTRACE(PROT_TRACE, "FTP Data.... now in state NEED_SELECT\n");
1.60 frystyk 810: if (FTPMode & FTP_DATA_PASV && !data->pasv)
811: ctrl->substate = NEED_PASV;
1.104 frystyk 812: else if (AcceptDataSocket(cnet, dnet, data))
1.60 frystyk 813: ctrl->substate = NEED_PORT;
814: else
815: ctrl->substate = SUB_ERROR;
816: break;
817:
818: case NEED_PASV:
1.102 frystyk 819: HTTRACE(PROT_TRACE, "FTP Data.... now in state NEED_PASV\n");
1.60 frystyk 820: if (!ctrl->sent) {
821: status = SendCommand(request, ctrl, "PASV", NULL);
822: if (status == HT_WOULD_BLOCK)
823: return HT_WOULD_BLOCK;
824: else if (status == HT_ERROR)
825: ctrl->substate = SUB_ERROR;
826: ctrl->sent = YES;
827: } else {
1.93 frystyk 828: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 829: if (status == HT_WOULD_BLOCK)
830: return HT_WOULD_BLOCK;
831: else if (status == HT_LOADED) {
832: if (ctrl->repcode == 227) {
833: /*
834: ** If succes, we have to scan for the returned number.
835: ** As the format for the response isn't standard,
836: ** the best thing to do is to scan for the first digit
837: ** after the status code, see RFC1123
838: */
839: char *host = ctrl->reply;
840: int h0, h1, h2, h3, p0=0, p1=0;
1.94 frystyk 841: while (*host && !isdigit((int) *host++));
1.60 frystyk 842: if (!*host || sscanf(--host, "%d,%d,%d,%d,%d,%d",
843: &h0,&h1,&h2,&h3,&p0,&p1) < 6) {
1.102 frystyk 844: HTTRACE(PROT_TRACE, "FTP Data.... PASV No addr\n");
1.60 frystyk 845: ctrl->substate = SUB_ERROR;
846: break;
847: } else {
848: int port = (p0<<8)+p1;
849: sprintf(data->host, "ftp://%d.%d.%d.%d:%d/",
850: h0, h1, h2, h3, port);
851: data->pasv = YES;
852: ctrl->substate = SUB_SUCCESS;
853: }
854: } else {
1.104 frystyk 855: ctrl->substate = AcceptDataSocket(cnet, dnet, data) ?
1.60 frystyk 856: NEED_PORT : SUB_ERROR;
857: }
858: } else
859: ctrl->substate = SUB_ERROR;
860: ctrl->sent = NO;
861: }
862: break;
1.22 frystyk 863:
1.60 frystyk 864: case NEED_PORT:
1.102 frystyk 865: HTTRACE(PROT_TRACE, "FTP Data.... now in state NEED_PORT\n");
1.60 frystyk 866: if (!ctrl->sent) {
867: status = SendCommand(request, ctrl, "PORT", data->host);
868: if (status == HT_WOULD_BLOCK)
869: return HT_WOULD_BLOCK;
870: else if (status == HT_ERROR)
871: ctrl->substate = SUB_ERROR;
872: ctrl->sent = YES;
873: } else {
1.93 frystyk 874: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 875: if (status == HT_WOULD_BLOCK)
876: return HT_WOULD_BLOCK;
877: else if (status == HT_LOADED) {
878: data->pasv = NO;
879: ctrl->substate = (ctrl->repcode/100 == 2) ?
880: SUB_SUCCESS : SUB_ERROR;
881: } else
882: ctrl->substate = SUB_ERROR;
883: ctrl->sent = NO;
884: }
885: break;
1.1 timbl 886:
1.60 frystyk 887: case SUB_ERROR:
1.102 frystyk 888: HTTRACE(PROT_TRACE, "FTP Data.... now in state SUB_ERROR\n");
889: HTTRACE(PROT_TRACE, "FTP Data.... Can't setup data connection\n");
1.60 frystyk 890: ctrl->substate = 0;
891: return HT_ERROR;
892: break;
1.1 timbl 893:
1.60 frystyk 894: case SUB_SUCCESS:
1.102 frystyk 895: HTTRACE(PROT_TRACE, "FTP Data.... now in state SUB_SUCCESS\n");
896: HTTRACE(PROT_TRACE, "FTP Data.... Data connection negotiated\n");
1.60 frystyk 897: ctrl->substate = 0;
898: return HT_OK;
899: break;
1.23 frystyk 900: }
1.58 frystyk 901: }
1.23 frystyk 902: }
1.1 timbl 903:
904:
1.60 frystyk 905: /* HTFTPServerInfo
906: ** ---------------
907: ** This function finds out what server we are talking to.
908: ** Maybe we can upgrade from NLST to LIST.
909: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
910: ** Thanks to James.W.Matthews@Dartmouth.EDU (James W. Matthews) for making
911: ** his code available.
1.1 timbl 912: */
1.60 frystyk 913: PRIVATE int HTFTPServerInfo (HTRequest *request, HTNet *cnet,
914: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 915: {
1.60 frystyk 916: int status;
917: typedef enum _state {
918: SUB_ERROR = -2,
919: SUB_SUCCESS = -1,
920: NEED_SYST = 0,
921: CHECK_SYST,
922: NEED_PWD,
923: CHECK_PWD
924: } state;
925:
926: /* Jump into a second level state machine */
927: while (1) {
928: switch ((state) ctrl->substate) {
929: case NEED_SYST:
1.102 frystyk 930: HTTRACE(PROT_TRACE, "FTP Server.. now in state NEED_SYST\n");
1.60 frystyk 931: if (!ctrl->sent) {
1.63 frystyk 932: if (ctrl->server != FTP_UNSURE) {
1.60 frystyk 933: FTPListType(data, ctrl->server);
934: return HT_OK;
935: }
936: status = SendCommand(request, ctrl, "SYST", NULL);
937: if (status == HT_WOULD_BLOCK)
938: return HT_WOULD_BLOCK;
939: else if (status == HT_ERROR)
940: ctrl->substate = SUB_ERROR;
941: ctrl->sent = YES;
942: } else {
1.93 frystyk 943: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 944: if (status == HT_WOULD_BLOCK)
945: return HT_WOULD_BLOCK;
946: else if (status == HT_LOADED) {
947: ctrl->substate=ctrl->repcode==215 ? CHECK_SYST : NEED_PWD;
948: } else
949: ctrl->substate = SUB_ERROR;
950: ctrl->sent = NO;
1.23 frystyk 951: }
952: break;
953:
1.60 frystyk 954: case CHECK_SYST:
1.102 frystyk 955: HTTRACE(PROT_TRACE, "FTP Server.. now in state CHECK_SYST\n");
1.23 frystyk 956: {
1.60 frystyk 957: char *reply = ctrl->reply;
958: if (!*reply) {
1.102 frystyk 959: HTTRACE(PROT_TRACE, "FTP Server.. No server info?\n");
1.60 frystyk 960: ctrl->substate = NEED_PWD;
1.23 frystyk 961: break;
962: }
1.60 frystyk 963: if (strncmp(reply, "UNIX Type: L8MAC-OSMachTen", 28) == 0) {
964: ctrl->server = FTP_MACHTEN;
965: } else if (strstr(reply, "UNIX") != NULL) {
966: ctrl->server = FTP_UNIX;
967: } else if (strncmp(reply, "VMS", 3) == 0) {
968: ctrl->server = FTP_VMS;
969: } else if ((strncmp(reply, "VM/CMS", 6) == 0) ||
970: (strncmp(reply, "VM", 2) == 0)) {
971: ctrl->server = FTP_CMS;
972: } else if (strncmp(reply, "DCTS", 4) == 0) {
973: ctrl->server = FTP_DCTS;
974: } else if (strstr(reply, "MAC-OS TCP/ConnectII") != NULL) {
1.23 frystyk 975: /* Check old versions of TCP/C using / in pathnames */
1.63 frystyk 976: ctrl->server = FTP_TCPC + FTP_UNSURE;
1.60 frystyk 977: } else if (strncmp(reply, "MACOS Peter's Server", 20) == 0) {
978: ctrl->server = FTP_PETER_LEWIS;
979: } else if (strncmp(reply, "Windows_NT", 10) == 0) {
980: ctrl->server = FTP_WINNT;
1.23 frystyk 981: }
982:
983: /* If we are unsure, try PWD to get more information */
1.60 frystyk 984: if (ctrl->server & FTP_UNSURE)
985: ctrl->substate = NEED_PWD;
1.23 frystyk 986: else
1.60 frystyk 987: ctrl->substate = SUB_SUCCESS;
1.1 timbl 988: }
1.23 frystyk 989: break;
990:
991: case NEED_PWD:
1.102 frystyk 992: HTTRACE(PROT_TRACE, "FTP Server.. now in state NEED_PWD\n");
1.60 frystyk 993: if (!ctrl->sent) {
994: status = SendCommand(request, ctrl, "PWD", NULL);
995: if (status == HT_WOULD_BLOCK)
996: return HT_WOULD_BLOCK;
997: else if (status == HT_ERROR)
998: ctrl->substate = SUB_ERROR;
999: ctrl->sent = YES;
1.23 frystyk 1000: } else {
1.93 frystyk 1001: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 1002: if (status == HT_WOULD_BLOCK)
1003: return HT_WOULD_BLOCK;
1004: else if (status == HT_LOADED) {
1005: ctrl->substate = (ctrl->repcode/100 == 2) ?
1006: CHECK_PWD : SUB_ERROR;
1007: } else
1008: ctrl->substate = SUB_ERROR;
1009: ctrl->sent = NO;
1.23 frystyk 1010: }
1011: break;
1012:
1.60 frystyk 1013: case CHECK_PWD:
1.102 frystyk 1014: HTTRACE(PROT_TRACE, "FTP Server.. now in state CHECK_PWD\n");
1.60 frystyk 1015: {
1016: char *start = strchr(ctrl->reply, '"');
1017: char *end;
1018: if (!start || (end = strchr(++start, '"')) == NULL) {
1.102 frystyk 1019: HTTRACE(PROT_TRACE, "FTP Server.. No current directory?\n");
1.60 frystyk 1020: ctrl->server = FTP_GENERIC;
1.23 frystyk 1021: } else {
1.60 frystyk 1022: *end = '\0';
1.63 frystyk 1023: if (ctrl->server & FTP_TCPC) {
1.60 frystyk 1024: ctrl->server = *start == '/' ? FTP_NCSA : FTP_TCPC;
1025: } else if (*start == '/') {
1026: /* path names starting with / imply Unix, right? */
1027: ctrl->server = FTP_UNIX;
1028: } else if (*(end-1) == ']') {
1029: /* path names ending with ] imply VMS, right? */
1030: ctrl->server = FTP_VMS;
1031: } else
1032: ctrl->server = FTP_GENERIC;
1.23 frystyk 1033: }
1.60 frystyk 1034: ctrl->substate = SUB_SUCCESS;
1.1 timbl 1035: }
1.23 frystyk 1036: break;
1.1 timbl 1037:
1.60 frystyk 1038: case SUB_ERROR:
1.102 frystyk 1039: HTTRACE(PROT_TRACE, "FTP Server.. now in state SUB_ERROR\n");
1040: HTTRACE(PROT_TRACE, "FTP Server.. Can't get server information\n");
1.60 frystyk 1041: ctrl->substate = 0;
1.63 frystyk 1042: ctrl->server = FTP_GENERIC;
1.60 frystyk 1043: return HT_ERROR;
1.23 frystyk 1044: break;
1.22 frystyk 1045:
1.60 frystyk 1046: case SUB_SUCCESS:
1.102 frystyk 1047: HTTRACE(PROT_TRACE, "FTP Server.. now in state SUB_SUCCESS\n");
1.95 frystyk 1048: {
1.81 frystyk 1049: HTHost * host = HTNet_host(cnet);
1.102 frystyk 1050: HTTRACE(PROT_TRACE, "FTP Server.. Guessed type %d\n" _ ctrl->server);
1.81 frystyk 1051: HTHost_setVersion(host, ctrl->server);
1052: FTPListType(data, ctrl->server);
1053: ctrl->substate = 0;
1054: return HT_OK;
1055: break;
1.95 frystyk 1056: }
1.22 frystyk 1057: }
1.23 frystyk 1058: }
1059: }
1060:
1.60 frystyk 1061: /* HTFTPGetData
1062: ** ------------
1063: ** This function asks for the file or a directory. First we try in one go,
1.23 frystyk 1064: ** but if that doesn't work, then we use CWD for each segment and then
1065: ** try to retrieve it. If that also fails, then we try if it is a
1.60 frystyk 1066: ** directory.
1067: ** Returns HT_OK, HT_LOADED, HT_ERROR, or HT_WOULD_BLOCK
1.23 frystyk 1068: */
1.71 frystyk 1069: PRIVATE int HTFTPGetData (HTRequest *request, HTNet *cnet, SOCKET sockfd,
1.60 frystyk 1070: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 1071: {
1072: int status;
1.60 frystyk 1073: char *segment = NULL;
1074: HTNet *dnet = ctrl->dnet;
1.93 frystyk 1075: BOOL data_is_active = (sockfd == HTNet_socket(dnet));
1.107 ! kahan 1076: HTPostCallback *pcbf;
1.60 frystyk 1077: typedef enum _state {
1078: SUB_ERROR = -2,
1079: SUB_SUCCESS = -1,
1080: NEED_SELECT = 0,
1081: NEED_CONNECT,
1082: NEED_ACCEPT,
1083: NEED_ACTION,
1084: NEED_CWD,
1085: NEED_SEGMENT,
1086: NEED_STREAM,
1.63 frystyk 1087: NEED_BODY
1.60 frystyk 1088: } state;
1089:
1090: /* Jump into a second level state machine */
1091: while (1) {
1092: switch ((state) ctrl->substate) {
1093: case NEED_SELECT:
1.102 frystyk 1094: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_SELECT\n");
1.60 frystyk 1095: ctrl->substate = data->pasv ? NEED_CONNECT : NEED_ACTION;
1096: break;
1097:
1098: case NEED_CONNECT:
1.102 frystyk 1099: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_CONNECT\n");
1.104 frystyk 1100: status = HTHost_connect(HTNet_host(dnet), dnet, data->host);
1.60 frystyk 1101: if (status == HT_WOULD_BLOCK)
1102: return HT_WOULD_BLOCK;
1103: else if (status == HT_OK) {
1.104 frystyk 1104: HTTRACE(PROT_TRACE, "FTP Get Data Active data socket %d\n" _
1.95 frystyk 1105: HTNet_socket(dnet));
1.60 frystyk 1106: ctrl->substate = NEED_ACTION;
1.81 frystyk 1107: } else { /* Swap to PORT on the fly */
1.91 frystyk 1108: NETCLOSE(HTNet_socket(dnet));
1109: HTNet_setSocket(dnet, INVSOC);
1.102 frystyk 1110: HTTRACE(PROT_TRACE, "FTP Get Data Swap to PORT on the fly\n");
1.89 frystyk 1111: ctrl->substate = NEED_SELECT;
1.77 frystyk 1112: HT_FREE(segment);
1.60 frystyk 1113: return HT_OK;
1114: }
1.23 frystyk 1115: break;
1116:
1.60 frystyk 1117: case NEED_ACCEPT:
1.102 frystyk 1118: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_ACCEPT\n");
1.104 frystyk 1119: status = HTHost_accept(HTNet_host(dnet), dnet, NULL);
1120: if (status == HT_WOULD_BLOCK)
1121: return HT_WOULD_BLOCK;
1122: else if (status == HT_OK) {
1123: HTTRACE(PROT_TRACE, "FTP Get Data Passive data socket %d\n" _
1124: HTNet_socket(dnet));
1125: ctrl->substate = NEED_STREAM;
1126: } else
1127: ctrl->substate = SUB_ERROR;
1.60 frystyk 1128: break;
1.33 frystyk 1129:
1.60 frystyk 1130: case NEED_ACTION:
1.102 frystyk 1131: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_ACTION\n");
1.60 frystyk 1132: if (!ctrl->sent) {
1133: char *cmd = (data->type=='L') ? "LIST" :
1134: (data->type=='N') ? "NLST" : "RETR";
1.106 raff 1135: if (HTRequest_method(request) == METHOD_PUT) cmd = "STOR";
1.60 frystyk 1136: StrAllocCopy(segment, data->offset);
1137: HTUnEscape(segment);
1138: HTCleanTelnetString(segment);
1139: status = SendCommand(request, ctrl, cmd, segment);
1.77 frystyk 1140: HT_FREE(segment);
1.60 frystyk 1141: if (status == HT_WOULD_BLOCK)
1142: return HT_WOULD_BLOCK;
1143: else if (status == HT_ERROR)
1144: ctrl->substate = SUB_ERROR;
1145: ctrl->sent = YES;
1146: } else {
1.93 frystyk 1147: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 1148: if (status == HT_WOULD_BLOCK)
1149: return HT_WOULD_BLOCK;
1150: else if (status == HT_LOADED) {
1151: int code = ctrl->repcode;
1152: if (code==125 || code==150 || code==225)
1.93 frystyk 1153: ctrl->substate = data->pasv ? NEED_STREAM : NEED_ACCEPT;
1.60 frystyk 1154: else if (code/100==5 && !ctrl->cwd)
1155: ctrl->substate = NEED_SEGMENT;
1.95 frystyk 1156: else {
1157: if (ctrl->repcode == 550) {
1.102 frystyk 1158: HTTRACE(PROT_TRACE, "FTP Get Data no such file or directory\n");
1.95 frystyk 1159: data->stream_error = YES;
1160: }
1161: ctrl->substate = SUB_ERROR;
1162: }
1.60 frystyk 1163: } else
1164: ctrl->substate = SUB_ERROR;
1165: ctrl->sent = NO;
1.23 frystyk 1166: }
1167: break;
1.60 frystyk 1168:
1169: case NEED_SEGMENT:
1.102 frystyk 1170: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_SEGMENT\n");
1.23 frystyk 1171: {
1.60 frystyk 1172: char *ptr;
1173: if (data->offset == data->file) {
1.63 frystyk 1174: if (ctrl->server == FTP_VMS) { /* Change to root */
1.77 frystyk 1175: if ((segment = (char *) HT_MALLOC(strlen(ctrl->uid)+3)) == NULL)
1176: HT_OUTOFMEM("segment ");
1.63 frystyk 1177: sprintf(segment, "[%s]", ctrl->uid);
1178: } else
1179: StrAllocCopy(segment, "/");
1.60 frystyk 1180: data->offset++;
1181: ctrl->substate = NEED_CWD;
1182: } else {
1183: if ((ptr = strchr(data->offset, '/'))) {
1184: *ptr='\0';
1185: StrAllocCopy(segment, data->offset);
1186: *ptr='/';
1187: data->offset = ++ptr;
1188: HTUnEscape(segment);
1189: HTCleanTelnetString(segment);
1190: ctrl->substate = NEED_CWD;
1.33 frystyk 1191: } else
1.60 frystyk 1192: ctrl->substate = NEED_ACTION;
1.23 frystyk 1193: }
1194: }
1195: break;
1196:
1.60 frystyk 1197: case NEED_CWD:
1.102 frystyk 1198: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_CWD\n");
1.60 frystyk 1199: if (!ctrl->sent) {
1200: status = SendCommand(request, ctrl, "CWD", segment);
1.77 frystyk 1201: HT_FREE(segment);
1.60 frystyk 1202: if (status == HT_WOULD_BLOCK)
1203: return HT_WOULD_BLOCK;
1204: else if (status == HT_ERROR)
1205: ctrl->substate = SUB_ERROR;
1206: ctrl->cwd = YES;
1207: ctrl->sent = YES;
1208: } else {
1.93 frystyk 1209: status = HTHost_read(HTNet_host(cnet), cnet);
1.60 frystyk 1210: if (status == HT_WOULD_BLOCK)
1211: return HT_WOULD_BLOCK;
1212: else if (status == HT_LOADED) {
1213: if (ctrl->repcode/100 == 2)
1214: ctrl->substate = NEED_SEGMENT;
1215: else
1216: ctrl->substate = SUB_ERROR;
1217: } else
1218: ctrl->substate = SUB_ERROR;
1219: ctrl->sent = NO;
1.33 frystyk 1220: }
1.60 frystyk 1221: break;
1.33 frystyk 1222:
1.81 frystyk 1223: case NEED_STREAM:
1.102 frystyk 1224: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_STREAM\n");
1.81 frystyk 1225: /*
1226: ** Create the stream pipe FROM the channel to the application.
1227: ** The target for the input stream pipe is set up using the
1228: ** stream stack.
1229: */
1.93 frystyk 1230: {
1231: HTStream * target = FTP_DIR(data) ?
1232: HTFTPDir_new(request, ctrl->server, data->type) :
1233: HTStreamStack(HTAnchor_format(HTRequest_anchor(request)),
1234: HTRequest_outputFormat(request),
1235: HTRequest_outputStream(request),
1236: request, YES);
1237: HTNet_setReadStream(dnet, target);
1.104 frystyk 1238: HTRequest_setOutputConnected(request, YES);
1.81 frystyk 1239: }
1.93 frystyk 1240: data_is_active = YES;
1.81 frystyk 1241: ctrl->substate = NEED_BODY;
1.91 frystyk 1242: break;
1.23 frystyk 1243:
1.60 frystyk 1244: case NEED_BODY:
1.102 frystyk 1245: HTTRACE(PROT_TRACE, "FTP Get Data now in state NEED_BODY\n");
1.93 frystyk 1246: if (data_is_active) {
1.106 raff 1247: if (HTRequest_method(request) == METHOD_PUT) {
1248: HTParentAnchor * entity = HTRequest_entityAnchor(request);
1249: const char * document = (const char *) HTAnchor_document(entity);
1250: int length = (int)HTAnchor_length(entity);
1251: HTStream * output =
1252: (HTStream *)HTChannel_output(HTNet_host(dnet)->channel);
1.107 ! kahan 1253: pcbf = HTRequest_postCallback(request);
! 1254: if (pcbf) {
! 1255: status = (*pcbf)(request, output);
! 1256: } else {
! 1257: status = (*output->isa->put_block)(output,
! 1258: document,
! 1259: length);
! 1260: if (status == HT_OK) {
! 1261: status = HT_LOADED;
! 1262: }
! 1263: }
! 1264:
1.106 raff 1265: if (status == HT_WOULD_BLOCK) {
1266: return HT_WOULD_BLOCK;
1.107 ! kahan 1267: } else if ( status == HT_LOADED ) {
! 1268: ctrl->substate = SUB_SUCCESS;
! 1269: data->complete |= 3;
1.106 raff 1270: } else if ( status == HT_OK ) {
1.107 ! kahan 1271: return HT_WOULD_BLOCK;
1.106 raff 1272: } else {
1273: ctrl->substate = SUB_ERROR;
1274: data->stream_error = YES;
1275: }
1276: continue;
1277: } else {
1.93 frystyk 1278: status = HTHost_read(HTNet_host(dnet), dnet);
1.106 raff 1279: }
1.93 frystyk 1280: if (status == HT_WOULD_BLOCK)
1281: return HT_WOULD_BLOCK;
1.106 raff 1282: else if (status == HT_LOADED || status == HT_CLOSED || status == HT_OK) {
1.107 ! kahan 1283: HTDoClose(dnet);
1.93 frystyk 1284: data->complete |= 1;
1285: if (data->complete >= 3)
1286: ctrl->substate = SUB_SUCCESS;
1287: else
1288: data_is_active = NO;
1289: } else {
1290: ctrl->substate = SUB_ERROR;
1291: data->stream_error = YES;
1292: }
1293: } else {
1294: status = HTHost_read(HTNet_host(cnet), cnet);
1295: if (status == HT_WOULD_BLOCK)
1296: return HT_WOULD_BLOCK;
1297: else if (status == HT_LOADED || status == HT_CLOSED) {
1298: if (ctrl->repcode/100 == 2) {
1299: data->complete |= 2;
1300: if (data->complete >= 3)
1301: ctrl->substate = SUB_SUCCESS;
1302: else
1303: data_is_active = YES;
1304: } else
1305: ctrl->substate = SUB_ERROR;
1306: } else
1307: ctrl->substate = SUB_ERROR;
1308: }
1309: break;
1.22 frystyk 1310:
1.60 frystyk 1311: case SUB_ERROR:
1.102 frystyk 1312: HTTRACE(PROT_TRACE, "FTP Get Data now in state SUB_ERROR\n");
1.95 frystyk 1313: HTRequest_addError(request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1314: NULL, 0, "HTFTPGetData");
1.60 frystyk 1315: ctrl->substate = 0;
1.77 frystyk 1316: HT_FREE(segment);
1.60 frystyk 1317: return HT_ERROR;
1.23 frystyk 1318: break;
1319:
1.60 frystyk 1320: case SUB_SUCCESS:
1.102 frystyk 1321: HTTRACE(PROT_TRACE, "FTP Get Data now in state SUB_SUCCESS\n");
1.60 frystyk 1322: ctrl->substate = 0;
1.77 frystyk 1323: HT_FREE(segment);
1.60 frystyk 1324: return HT_LOADED;
1.23 frystyk 1325: break;
1.1 timbl 1326: }
1327: }
1.23 frystyk 1328: }
1.1 timbl 1329:
1.23 frystyk 1330: /* ------------------------------------------------------------------------- */
1331:
1332: /* Retrieve File from Server as an atomic action.
1333: ** -----------------------------------------------
1.58 frystyk 1334: ** Given a hypertext address, this routine loads a document.
1.23 frystyk 1335: **
1336: ** On entry,
1.58 frystyk 1337: ** request This is the request structure
1338: ** returns HT_ERROR Error has occured in call back
1339: ** HT_OK Call back was OK
1340: */
1.91 frystyk 1341: PRIVATE int FTPEvent (SOCKET soc, void * pVoid, HTEventType type);
1342:
1343: PUBLIC int HTLoadFTP (SOCKET soc, HTRequest * request)
1.58 frystyk 1344: {
1.84 frystyk 1345: HTNet * cnet = HTRequest_net(request);
1346: ftp_ctrl * ctrl = NULL;
1347: ftp_data * data = NULL;
1348: HTParentAnchor * anchor = HTRequest_anchor(request);
1349: char * url = HTAnchor_physical(anchor);
1.23 frystyk 1350:
1.58 frystyk 1351: /*
1.60 frystyk 1352: ** Initiate a new FTP ctrl and data structure and bind to request structure
1.58 frystyk 1353: ** This is actually state FTP_BEGIN, but it can't be in the state
1354: ** machine as we need the structure first.
1355: */
1.102 frystyk 1356: HTTRACE(PROT_TRACE, "FTP......... Looking for `%s\'\n" _ url);
1.91 frystyk 1357: if ((ctrl = (ftp_ctrl *) HT_CALLOC(1, sizeof(ftp_ctrl))) == NULL ||
1358: (data = (ftp_data *) HT_CALLOC(1, sizeof(ftp_data))) == NULL)
1359: HT_OUTOFMEM("HTLoadFTP");
1360: ctrl->cmd = HTChunk_new(128);
1361: ctrl->state = FTP_BEGIN;
1362: ctrl->server = FTP_UNSURE;
1363: ctrl->dnet = HTNet_dup(cnet);
1.93 frystyk 1364: ctrl->cnet = cnet;
1.91 frystyk 1365: HTNet_setContext(cnet, ctrl);
1366: HTNet_setEventCallback(cnet, FTPEvent);
1.92 eric 1367: HTNet_setEventParam(cnet, ctrl);
1.98 frystyk 1368: HTNet_setRawBytesCount(ctrl->dnet, YES);
1.97 frystyk 1369:
1.92 eric 1370: /* for now, the dnet comes back to the same place
1371: ** - vestigial from when the callback was from the request object
1372: */
1373: HTNet_setContext(ctrl->dnet, data);
1374: HTNet_setEventCallback(ctrl->dnet, FTPEvent);
1375: HTNet_setEventParam(ctrl->dnet, ctrl);
1.91 frystyk 1376: return FTPEvent(soc, ctrl, HTEvent_BEGIN);
1377: }
1378:
1379: PRIVATE int FTPEvent (SOCKET soc, void * pVoid, HTEventType type)
1380: {
1.93 frystyk 1381: ftp_ctrl * ctrl = (ftp_ctrl *) pVoid;
1382: ftp_data * data = (ftp_data *) HTNet_context(ctrl->dnet);
1.91 frystyk 1383: int status = HT_ERROR;
1.93 frystyk 1384: HTNet * cnet = ctrl->cnet;
1.91 frystyk 1385: HTRequest * request = HTNet_request(cnet);
1386: HTParentAnchor * anchor = HTRequest_anchor(request);
1387: char * url = HTAnchor_physical(anchor);
1388:
1.97 frystyk 1389: HTHost *host = HTNet_host(cnet);
1390:
1391:
1.91 frystyk 1392: if (type == HTEvent_CLOSE) { /* Interrupted */
1.105 frystyk 1393: if (soc == HTNet_socket(cnet) && data->complete<1)
1.98 frystyk 1394: FTPCleanup(request, HT_INTERRUPTED);
1.60 frystyk 1395: else
1.98 frystyk 1396: FTPCleanup(request, HT_LOADED);
1397: return HT_OK;
1398: } else if (type == HTEvent_TIMEOUT) {
1.105 frystyk 1399:
1400: /*
1401: ** Don't time out the control connection if we are actually recieving data
1402: ** on the data connection
1403: */
1404: if (!(soc == HTNet_socket(cnet) && !(data->complete & 1) && HTNet_bytesRead(ctrl->dnet)>0)) {
1405: HTRequest_addError(request, ERR_FATAL, NO, HTERR_TIME_OUT, NULL, 0, "HTLoadHTTP");
1406: FTPCleanup(request, HT_TIMEOUT);
1407: }
1.60 frystyk 1408: return HT_OK;
1.98 frystyk 1409:
1.60 frystyk 1410: } else {
1.93 frystyk 1411: ctrl = (ftp_ctrl *) HTNet_context(cnet); /* Get existing copy */
1412: data = (ftp_data *) HTNet_context(ctrl->dnet);
1.60 frystyk 1413: }
1.58 frystyk 1414:
1415: /* Now jump into the machine. We know the state from the previous run */
1416: while (1) {
1417: switch (ctrl->state) {
1.60 frystyk 1418: case FTP_BEGIN:
1.102 frystyk 1419: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_BEGIN\n");
1.100 frystyk 1420:
1421: /* Only handle GET requests for now */
1.106 raff 1422: if (HTRequest_method(request) != METHOD_GET &&
1423: HTRequest_method(request) != METHOD_PUT ) {
1424: HTTRACE(PROT_TRACE, "FTP Event... This module only supports the GET or PUT methods\n");
1.100 frystyk 1425: ctrl->state = FTP_ERROR;
1426: break;
1427: }
1428:
1.95 frystyk 1429: HTFTPParseURL(request, url, ctrl, data);
1.97 frystyk 1430:
1.95 frystyk 1431: /* The following is added by Neil Griffin, GAIN Software */
1432:
1433: /*
1434: ** If the user hasn't specified a permanent transfer type, then
1435: ** use the transfer type specified at the end of the URL.
1436: */
1437: if (g_FTPTransferMode == FTP_DEFAULT_TRANSFER_MODE) {
1438: switch (data->type) {
1439: case 'a' : data->type = 'A'; break;
1440: case 'A' : data->type = 'A'; break;
1441: case 'i' : data->type = 'I'; break;
1442: case 'I' : data->type = 'I'; break;
1443: case 'd' : FTPListType(data, ctrl->server); break;
1444: case 'D' : FTPListType(data, ctrl->server); break;
1445: default : data->type = 'I'; break;
1446: }
1447:
1448: /* Otherwise, use the permanent transfer type specified by the user. */
1449: } else {
1450: switch (g_FTPTransferMode) {
1451: case FTP_ASCII_TRANSFER_MODE : data->type = 'A'; break;
1452: case FTP_BINARY_TRANSFER_MODE : data->type = 'I'; break;
1453: case FTP_DIR_TRANSFER_MODE : FTPListType(data, ctrl->server); break;
1454: default : data->type = 'I'; break;
1455: }
1456: }
1457:
1.102 frystyk 1458: HTTRACE(PROT_TRACE, "FTP Event... Transfer mode set to '%c'\n" _ data->type);
1.95 frystyk 1459:
1460: /*
1461: ** See if we can get any hints to what we might expect content wise.
1462: */
1463: if (!FTP_DIR(data)) HTBind_getAnchorBindings(anchor);
1.98 frystyk 1464:
1465: /* Ready for next state */
1466: ctrl->state = FTP_NEED_CCON;
1467: break;
1.60 frystyk 1468:
1.95 frystyk 1469: case FTP_NEED_CCON:
1.102 frystyk 1470: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_CONN\n");
1.104 frystyk 1471: status = HTHost_connect(host, cnet, url);
1.97 frystyk 1472: host = HTNet_host(cnet);
1.60 frystyk 1473: if (status == HT_OK) {
1.81 frystyk 1474:
1475: /*
1476: ** Check the protocol class to see if we have connected to a
1477: ** the right class of server, in this case HTTP.
1478: */
1479: {
1480: char * s_class = HTHost_class(host);
1481: if (s_class && strcasecomp(s_class, "ftp")) {
1482: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1483: NULL, 0, "HTLoadNews");
1484: ctrl->state = FTP_ERROR;
1485: break;
1486: }
1487: HTHost_setClass(host, "ftp");
1488: }
1489:
1490: /* Check persistent connection */
1491: if (HTNet_persistent(cnet)) {
1492: ctrl->server = HTHost_version(host);
1.102 frystyk 1493: HTTRACE(PROT_TRACE, "FTP Server.. Cache says type %d server\n" _
1.81 frystyk 1494: ctrl->server);
1495: ctrl->reset = 1;
1496: } else
1.88 frystyk 1497: HTNet_setPersistent(cnet, YES, HT_TP_SINGLE);
1.23 frystyk 1498:
1.81 frystyk 1499: /*
1500: ** Create the stream pipe FROM the channel to the application.
1501: ** The target for the input stream pipe is set up using the
1502: ** stream stack.
1503: */
1.93 frystyk 1504: {
1505: HTStream * readstream = FTPStatus_new(request, ctrl, host);
1506: HTNet_setReadStream(cnet, readstream);
1507: }
1.23 frystyk 1508:
1.60 frystyk 1509: /*
1.81 frystyk 1510: ** Create the stream pipe TO the channel from the application
1511: ** and hook it up to the request object
1512: */
1513: {
1514: HTOutputStream * output = HTNet_getOutput(cnet, NULL, 0);
1515: HTRequest_setInputStream(request, (HTStream *) output);
1516: }
1517:
1518: /*
1.60 frystyk 1519: ** Set up concurrent read/write if this request isn't the
1520: ** source for a PUT or POST. As source we don't start reading
1521: ** before all destinations are ready. If destination then
1522: ** register the input stream and get ready for read
1523: */
1524: if (HTRequest_isPostWeb(request)) {
1.93 frystyk 1525: HTEvent * event = HTNet_event(cnet);
1526: HTEvent_register(HTNet_socket(cnet), HTEvent_READ, event);
1.60 frystyk 1527: HTRequest_linkDestination(request);
1528: }
1529:
1530: ctrl->state = FTP_NEED_LOGIN;
1.88 frystyk 1531: } else if (status == HT_WOULD_BLOCK || status == HT_PENDING)
1.60 frystyk 1532: return HT_OK;
1533: else
1534: ctrl->state = FTP_ERROR; /* Error or interrupt */
1535: break;
1536:
1537: case FTP_NEED_LOGIN:
1.102 frystyk 1538: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_LOGIN\n");
1.60 frystyk 1539: status = HTFTPLogin(request, cnet, ctrl);
1540: if (status == HT_WOULD_BLOCK) return HT_OK;
1541: ctrl->state = (status == HT_OK) ? FTP_NEED_DCON : FTP_ERROR;
1542: break;
1543:
1544: case FTP_NEED_DCON:
1.102 frystyk 1545: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_DCON\n");
1.60 frystyk 1546: status = HTFTPDataConnection(request, cnet, ctrl, data);
1547: if (status == HT_WOULD_BLOCK) return HT_OK;
1548: if (status == HT_OK)
1549: ctrl->state = (data->type=='N') ?
1550: FTP_NEED_SERVER : FTP_NEED_DATA;
1551: else
1552: ctrl->state = FTP_ERROR;
1553: break;
1554:
1555: case FTP_NEED_DATA:
1.102 frystyk 1556: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_DATA\n");
1.63 frystyk 1557: status = HTFTPGetData(request, cnet, soc, ctrl, data);
1.60 frystyk 1558: if (status == HT_WOULD_BLOCK) return HT_OK;
1559: if (status == HT_LOADED)
1560: ctrl->state = FTP_SUCCESS;
1561: else if (status == HT_OK)
1562: ctrl->state = FTP_NEED_DCON;
1.106 raff 1563: else if (HTRequest_method(request) == METHOD_PUT)
1564: ctrl->state = FTP_ERROR;
1.76 frystyk 1565: else if (!FTP_DIR(data) && !data->stream_error) {
1.60 frystyk 1566: FTPListType(data, ctrl->server);
1567: ctrl->state = FTP_NEED_SERVER; /* Try a dir instead? */
1568: } else
1569: ctrl->state = FTP_ERROR;
1570: break;
1.23 frystyk 1571:
1.60 frystyk 1572: case FTP_NEED_SERVER:
1.102 frystyk 1573: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_NEED_SERVER\n");
1.60 frystyk 1574: status = HTFTPServerInfo(request, cnet, ctrl, data);
1.95 frystyk 1575: if (status == HT_WOULD_BLOCK) return HT_OK;
1.60 frystyk 1576: ctrl->state = FTP_NEED_DATA;
1577: break;
1578:
1579: case FTP_SUCCESS:
1.102 frystyk 1580: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_SUCCESS\n");
1.95 frystyk 1581: FTPCleanup(request, HT_LOADED);
1.60 frystyk 1582: return HT_OK;
1583: break;
1584:
1585: case FTP_ERROR:
1.102 frystyk 1586: HTTRACE(PROT_TRACE, "FTP Event... now in state FTP_ERROR\n");
1.95 frystyk 1587: FTPCleanup(request, HT_ERROR);
1.60 frystyk 1588: return HT_OK;
1589: break;
1.23 frystyk 1590: }
1.60 frystyk 1591: } /* End of while(1) */
1.23 frystyk 1592: }
1.22 frystyk 1593:
1.95 frystyk 1594: PUBLIC void HTFTP_setTransferMode(FTPTransferMode mode)
1595: {
1596: g_FTPTransferMode = mode;
1597: }
1598:
1599: PUBLIC FTPTransferMode HTFTP_transferMode (void)
1600: {
1601: return g_FTPTransferMode;
1.97 frystyk 1602: }
1603:
1604: PUBLIC void HTFTP_setControlMode (FTPControlMode mode)
1605: {
1606: g_FTPControlMode = mode;
1607: }
1608:
1609: PUBLIC FTPControlMode HTFTP_controlMode (void)
1610: {
1611: return g_FTPControlMode;
1.95 frystyk 1612: }
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