Annotation of libwww/Library/src/HTFTP.c, revision 1.83
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.
1.83 ! frystyk 6: ** @(#) $Id: HTFTP.c,v 1.82 1996/05/15 22:34:11 eric Exp $
1.1 timbl 7: **
8: ** A cache of control connections is kept.
9: **
10: ** Note: Port allocation
11: **
12: ** It is essential that the port is allocated by the system, rather
1.79 frystyk 13: ** than chosen in rotation by us (FTP_POLL_PORTS), or the following
1.1 timbl 14: ** problem occurs.
15: **
16: ** It seems that an attempt by the server to connect to a port which has
17: ** been used recently by a listen on the same socket, or by another
18: ** socket this or another process causes a hangup of (almost exactly)
19: ** one minute. Therefore, we have to use a rotating port number.
20: ** The problem remains that if the application is run twice in quick
21: ** succession, it will hang for what remains of a minute.
22: **
23: ** Authors
1.54 frystyk 24: ** TBL Tim Berners-lee <timbl@w3.org>
1.1 timbl 25: ** DD Denis DeLaRoca 310 825-4580 <CSP1DWD@mvs.oac.ucla.edu>
1.22 frystyk 26: ** LM Lou Montulli <montulli@ukanaix.cc.ukans.edu>
27: ** FM Foteos Macrides <macrides@sci.wfeb.edu>
1.54 frystyk 28: ** HF Henrik Frystyk <frystyk@w3.org>
1.30 luotonen 29: ** AL Ari Luotonen <luotonen@www.cern.ch>
1.23 frystyk 30: **
1.1 timbl 31: ** History:
32: ** 2 May 91 Written TBL, as a part of the WorldWideWeb project.
33: ** 15 Jan 92 Bug fix: close() was used for NETCLOSE for control soc
34: ** 10 Feb 92 Retry if cached connection times out or breaks
35: ** 8 Dec 92 Bug fix 921208 TBL after DD
36: ** 17 Dec 92 Anon FTP password now just WWWuser@ suggested by DD
1.2 timbl 37: ** fails on princeton.edu!
1.22 frystyk 38: ** 27 Dec 93 (FM) Fixed up so FTP now works with VMS hosts. Path
39: ** must be Unix-style and cannot include the device
40: ** or top directory.
41: ** ?? ??? ?? (LM) Added code to prompt and send passwords for non
42: ** anonymous FTP
43: ** 25 Mar 94 (LM) Added code to recognize different ftp server types
44: ** and code to parse dates and sizes on most hosts.
45: ** 27 Mar 93 (FM) Added code for getting dates and sizes on VMS hosts.
1.23 frystyk 46: ** 27 Apr 94 (HF) The module is basically rewritten to conform with
47: ** rfc 959, 1123 and 1579 and turned into a state
48: ** machine. New semantics of ftp URLs are supported.
1.30 luotonen 49: ** 2 May 94 (AL) Fixed possible security hole when the URL contains
50: ** a newline, that could cause multiple commands to be
51: ** sent to an FTP server.
1.60 frystyk 52: ** Sep 95 HFN Rewritten to support streams and persistent conenctions
53: ** and multiplexed IO
1.22 frystyk 54: ** Notes:
55: ** Portions Copyright 1994 Trustees of Dartmouth College
56: ** Code for recognizing different FTP servers and
57: ** parsing "ls -l" output taken from Macintosh Fetch
58: ** program with permission from Jim Matthews,
59: ** Dartmouth Software Development Team.
1.23 frystyk 60: */
1.1 timbl 61:
1.22 frystyk 62: /* Library include files */
1.79 frystyk 63: #include "sysdep.h"
1.81 frystyk 64: #include "WWWUtil.h"
65: #include "WWWCore.h"
1.1 timbl 66: #include "HTTCP.h"
1.58 frystyk 67: #include "HTReqMan.h"
1.60 frystyk 68: #include "HTNetMan.h"
1.63 frystyk 69: #include "HTFTPDir.h"
1.22 frystyk 70: #include "HTFTP.h" /* Implemented here */
71:
72: /* Macros and other defines */
1.60 frystyk 73: #if 0
74: /* Only use this if ABSOLUTELY necessary! */
1.79 frystyk 75: #define FTP_POLL_PORTS /* If allocation does not work, poll ourselves.*/
1.1 timbl 76: #endif
77:
1.79 frystyk 78: #ifdef FTP_POLL_PORTS
1.23 frystyk 79: #define FIRST_TCP_PORT 1024 /* Region to try for a listening port */
80: #define LAST_TCP_PORT 5999
1.60 frystyk 81: PRIVATE int DataPort = FIRST_TCP_PORT;
1.1 timbl 82: #endif
83:
1.60 frystyk 84: #ifndef FTP_PORT
85: #define FTP_PORT 21
86: #define FTP_DATA 20
1.1 timbl 87: #endif
1.60 frystyk 88:
89: #define WWW_FTP_CLIENT "libwww@" /* If can't get user-info, use this */
90: #define FTP_DIR(me) ((me)->type=='L' || (me)->type=='N')
1.1 timbl 91:
1.58 frystyk 92: /*
93: ** Local context structure used in the HTNet object.
94: */
1.45 frystyk 95: typedef enum _HTFTPState {
1.60 frystyk 96: FTP_SUCCESS = -2,
97: FTP_ERROR = -1,
1.58 frystyk 98: FTP_BEGIN = 0,
99: FTP_NEED_CCON, /* Control connection */
1.60 frystyk 100: FTP_NEED_LOGIN,
1.58 frystyk 101: FTP_NEED_DCON, /* Data connection */
1.60 frystyk 102: FTP_NEED_DATA,
103: FTP_NEED_SERVER /* For directory listings */
1.39 frystyk 104: } HTFTPState;
105:
1.58 frystyk 106: typedef struct _ftp_ctrl {
1.60 frystyk 107: HTChunk * cmd;
108: int repcode;
109: char * reply;
110: char * uid;
1.58 frystyk 111: char * passwd;
1.60 frystyk 112: char * account;
1.58 frystyk 113: HTFTPState state; /* State of the connection */
1.60 frystyk 114: int substate; /* For hierarchical states */
115: BOOL sent; /* Read or write command */
116: BOOL cwd; /* Done cwd */
117: BOOL reset; /* Expect greeting */
1.63 frystyk 118: FTPServerType server; /* Type of server */
1.60 frystyk 119: HTNet * dnet; /* Data connection */
1.58 frystyk 120: } ftp_ctrl;
1.39 frystyk 121:
1.58 frystyk 122: typedef struct _ftp_data {
1.60 frystyk 123: char host[30]; /* Host to contact for data */
124: char * file; /* File or dir name */
125: char * offset; /* offset into file */
126: BOOL pasv; /* Active or passive */
127: char type; /* 'A', 'I', 'L'(IST), 'N'(LST) */
1.63 frystyk 128: BOOL ready; /* True if either ctrl or data is HT_LOADED */
1.76 frystyk 129: BOOL stream_error;
1.58 frystyk 130: } ftp_data;
1.39 frystyk 131:
1.60 frystyk 132: struct _HTStream {
1.79 frystyk 133: const HTStreamClass * isa;
1.60 frystyk 134: HTStream * target;
135: HTRequest * request;
136: ftp_ctrl * ctrl;
1.80 frystyk 137: HTEOLState state;
1.60 frystyk 138: HTChunk * welcome;
1.62 frystyk 139: BOOL junk; /* For too long lines */
1.60 frystyk 140: BOOL first_line;
1.63 frystyk 141: char buffer[MAX_FTP_LINE+1];
1.60 frystyk 142: int buflen;
143: };
144:
1.81 frystyk 145: struct _HTInputStream {
146: const HTInputStreamClass * isa;
147: };
148:
1.60 frystyk 149: typedef enum _FTPDataCon {
150: FTP_DATA_PASV = 0x1,
151: FTP_DATA_PORT = 0x2
152: } FTPDataCon;
153:
154: PRIVATE FTPDataCon FTPMode = FTP_DATA_PASV;
1.39 frystyk 155:
1.23 frystyk 156: /* ------------------------------------------------------------------------- */
1.60 frystyk 157: /* FTP Status Line Stream */
1.22 frystyk 158: /* ------------------------------------------------------------------------- */
1.60 frystyk 159:
160: /* FTPCleanup
161: ** ----------
162: ** This function closes the connection and frees memory.
163: ** Returns YES on OK, else NO
164: */
1.65 frystyk 165: PRIVATE int FTPCleanup (HTRequest * request, int status)
1.60 frystyk 166: {
1.75 frystyk 167: if (request) {
168: HTNet * cnet = request->net;
169: ftp_ctrl * ctrl;
170:
171: /* Free stream with data TO network */
172: if (!HTRequest_isDestination(request) && request->input_stream) {
173: if (status == HT_INTERRUPTED)
174: (*request->input_stream->isa->abort)(request->input_stream,NULL);
175: else
176: (*request->input_stream->isa->_free)(request->input_stream);
177: }
178:
179: /* Remove the request object and our own context structure for http */
180: if (cnet && (ctrl = (ftp_ctrl *) cnet->context) != NULL) {
181: HTNet * dnet = ctrl->dnet;
182: ftp_data * data;
183: HTChunk_delete(ctrl->cmd);
1.77 frystyk 184: HT_FREE(ctrl->reply);
185: HT_FREE(ctrl->uid);
186: HT_FREE(ctrl->passwd);
187: HT_FREE(ctrl->account);
188: HT_FREE(ctrl);
1.75 frystyk 189: if (dnet && (data = (ftp_data *) dnet->context) != NULL) {
1.77 frystyk 190: HT_FREE(data->file);
191: HT_FREE(data);
1.75 frystyk 192: }
1.81 frystyk 193: HTNet_setPersistent(dnet, NO);
1.75 frystyk 194: HTNet_delete(dnet, HT_IGNORE);
195: }
196: HTNet_delete(cnet, status);
197: return YES;
1.60 frystyk 198: }
1.75 frystyk 199: return NO;
1.60 frystyk 200: }
201:
202: /* ScanResponse
203: ** ------------
204: ** Analyzes the response from the FTP server.
205: ** Returns HT_LOADED if OK, HT_OK if more, HT_ERROR if error
206: ** the control connection.
1.33 frystyk 207: */
1.65 frystyk 208: PRIVATE int ScanResponse (HTStream * me)
1.33 frystyk 209: {
1.60 frystyk 210: int reply = 0;
211: char cont = '\0';
212: char *ptr = me->buffer+4;
213: *(me->buffer+me->buflen) = '\0';
214: if (isdigit(*(me->buffer))) sscanf(me->buffer, "%d%c", &reply, &cont);
215: if (me->first_line) {
1.78 eric 216: if (PROT_TRACE) HTTrace("FTP Rx...... `%s\'\n", me->buffer);
1.60 frystyk 217: if (!reply) return HT_ERROR;
218: me->first_line = NO;
219: me->ctrl->repcode = reply;
220: StrAllocCopy(me->ctrl->reply, ptr);
221: } else {
1.73 frystyk 222: HTChunk_puts(me->welcome, ptr);
223: HTChunk_putc(me->welcome, '\n');
1.33 frystyk 224: }
1.60 frystyk 225: me->buflen = 0;
1.68 frystyk 226: me->state = EOL_BEGIN;
1.60 frystyk 227: if (cont != '-') {
228: me->first_line = YES;
229: return HT_LOADED;
1.33 frystyk 230: }
1.60 frystyk 231: return HT_OK;
1.33 frystyk 232: }
233:
1.60 frystyk 234: /*
235: ** Searches for FTP header line until buffer fills up or a CRLF or LF
236: ** is found
1.23 frystyk 237: */
1.79 frystyk 238: PRIVATE int FTPStatus_put_block (HTStream * me, const char * b, int l)
1.60 frystyk 239: {
240: int status;
241: while (l-- > 0) {
242: if (me->state == EOL_FCR) {
243: if (*b == LF) {
1.62 frystyk 244: if (!me->junk) {
245: if ((status = ScanResponse(me)) != HT_OK)
246: return status;
247: } else {
248: me->buflen = 0;
249: me->junk = NO;
250: }
1.60 frystyk 251: }
252: } else if (*b == CR) {
253: me->state = EOL_FCR;
254: } else if (*b == LF) {
1.62 frystyk 255: if (!me->junk) {
256: if ((status = ScanResponse(me)) != HT_OK)
257: return status;
258: } else {
259: me->buflen = 0;
260: me->junk = NO;
261: }
1.60 frystyk 262: } else {
263: *(me->buffer+me->buflen++) = *b;
1.63 frystyk 264: if (me->buflen >= MAX_FTP_LINE) {
1.60 frystyk 265: if (PROT_TRACE)
1.78 eric 266: HTTrace("FTP Status.. Line too long - chopped\n");
1.62 frystyk 267: me->junk = YES;
268: if ((status = ScanResponse(me)) != HT_OK) {
269: me->junk = NO;
270: return status;
271: }
1.23 frystyk 272: }
273: }
1.60 frystyk 274: b++;
1.25 frystyk 275: }
1.60 frystyk 276: return HT_OK;
1.25 frystyk 277: }
278:
1.79 frystyk 279: PRIVATE int FTPStatus_put_string (HTStream * me, const char * s)
1.60 frystyk 280: {
281: return FTPStatus_put_block(me, s, (int) strlen(s));
282: }
1.25 frystyk 283:
1.65 frystyk 284: PRIVATE int FTPStatus_put_character (HTStream * me, char c)
1.25 frystyk 285: {
1.60 frystyk 286: return FTPStatus_put_block(me, &c, 1);
287: }
1.25 frystyk 288:
1.65 frystyk 289: PRIVATE int FTPStatus_flush (HTStream * me)
1.60 frystyk 290: {
291: return (*me->target->isa->flush)(me->target);
1.23 frystyk 292: }
1.22 frystyk 293:
1.65 frystyk 294: PRIVATE int FTPStatus_free (HTStream * me)
1.22 frystyk 295: {
1.60 frystyk 296: int status = HT_OK;
297: if (me->target) {
298: if ((status = (*me->target->isa->_free)(me->target)) == HT_WOULD_BLOCK)
299: return HT_WOULD_BLOCK;
1.22 frystyk 300: }
1.73 frystyk 301: HTChunk_delete(me->welcome);
1.77 frystyk 302: HT_FREE(me);
1.60 frystyk 303: return HT_OK;
1.22 frystyk 304: }
305:
1.68 frystyk 306: PRIVATE int FTPStatus_abort (HTStream * me, HTList * e)
1.22 frystyk 307: {
1.60 frystyk 308: if (me->target)
309: (*me->target->isa->abort)(me->target, e);
1.73 frystyk 310: HTChunk_delete(me->welcome);
1.77 frystyk 311: HT_FREE(me);
1.60 frystyk 312: if (PROT_TRACE)
1.78 eric 313: HTTrace("FTPStatus... ABORTING...\n");
1.60 frystyk 314: return HT_ERROR;
1.22 frystyk 315: }
316:
1.60 frystyk 317: /* FTPStatus Stream
318: ** -----------------
1.22 frystyk 319: */
1.79 frystyk 320: PRIVATE const HTStreamClass FTPStatusClass =
1.60 frystyk 321: {
322: "FTPStatus",
323: FTPStatus_flush,
324: FTPStatus_free,
325: FTPStatus_abort,
326: FTPStatus_put_character,
327: FTPStatus_put_string,
328: FTPStatus_put_block
329: };
330:
1.65 frystyk 331: PRIVATE HTStream * FTPStatus_new (HTRequest * request, ftp_ctrl * ctrl)
1.60 frystyk 332: {
1.77 frystyk 333: HTStream * me;
334: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
335: HT_OUTOFMEM("FTPStatus_new");
1.60 frystyk 336: me->isa = &FTPStatusClass;
337: me->request = request;
338: me->first_line = YES;
1.73 frystyk 339: me->welcome = HTChunk_new(256);
1.60 frystyk 340: me->ctrl = ctrl;
341: me->state = EOL_BEGIN;
342: return me;
1.22 frystyk 343: }
344:
1.60 frystyk 345: /* ------------------------------------------------------------------------- */
346: /* FTP Client Functions for managing control and data connections */
347: /* ------------------------------------------------------------------------- */
1.22 frystyk 348:
1.60 frystyk 349: PRIVATE int SendCommand (HTRequest *request, ftp_ctrl *ctrl,
350: char *token, char *pars)
351: {
352: int len = strlen(token) + (pars ? strlen(pars)+1:0) + 2;
1.73 frystyk 353: HTChunk_clear(ctrl->cmd);
354: HTChunk_ensure(ctrl->cmd, len);
1.60 frystyk 355: if (pars && *pars)
1.73 frystyk 356: sprintf(HTChunk_data(ctrl->cmd), "%s %s%c%c", token, pars, CR, LF);
1.60 frystyk 357: else
1.73 frystyk 358: sprintf(HTChunk_data(ctrl->cmd), "%s%c%c", token, CR, LF);
1.78 eric 359: if (PROT_TRACE) HTTrace("FTP Tx...... %s", HTChunk_data(ctrl->cmd));
1.60 frystyk 360: return (*request->input_stream->isa->put_block)
1.73 frystyk 361: (request->input_stream, HTChunk_data(ctrl->cmd), len);
1.60 frystyk 362: }
363:
364: /* HTFTPParseURL
365: ** -------------
366: ** Scan URL for uid and passwd, and any data type indication. The
367: ** expected format is [user[:password]@]host[:port].
368: ** If no values are found then use defaults.
369: ** Returns YES if OK, else NO
1.22 frystyk 370: */
1.83 ! frystyk 371: PRIVATE BOOL HTFTPParseURL (HTRequest * request,
! 372: char *url, ftp_ctrl *ctrl, ftp_data *data)
1.22 frystyk 373: {
1.60 frystyk 374: char *login = HTParse(url, "", PARSE_HOST);
375: char *path = HTParse(url, "", PARSE_PATH+PARSE_PUNCTUATION);
376: char *ptr = strchr(login, '@');
377: if (ptr) { /* Uid and/or passwd specified */
378: char *passwd;
379: *ptr = '\0';
380: if ((passwd = strchr(login, ':'))) { /* Passwd specified */
381: *passwd++ = '\0';
382: HTUnEscape(passwd);
383: StrAllocCopy(ctrl->passwd, passwd);
1.22 frystyk 384: }
1.60 frystyk 385: HTUnEscape(login);
386: StrAllocCopy(ctrl->uid, login);
387: } else { /* Use anonymous */
1.83 ! frystyk 388: HTUserProfile * up = HTRequest_userProfile(request);
! 389: const char * mailaddress = HTUserProfile_email(up);
1.60 frystyk 390: StrAllocCopy(ctrl->uid, "anonymous");
391: if (mailaddress)
392: StrAllocCopy(ctrl->passwd, mailaddress);
393: else
394: StrAllocCopy(ctrl->passwd, WWW_FTP_CLIENT);
1.22 frystyk 395: }
1.66 frystyk 396: if (PROT_TRACE)
1.78 eric 397: HTTrace("FTPParse.... uid `%s\' pw `%s\'\n",
1.66 frystyk 398: ctrl->uid ? ctrl->uid : "<null>",
399: ctrl->passwd ? ctrl->passwd : "<null>");
1.60 frystyk 400:
401: ptr = strchr(path, ';');
402: if (ptr) {
403: *ptr = '\0';
404: if (strncasecomp(ptr, ";type=", 6)) /* Look for type */
405: data->type = TOUPPER(*(ptr+6));
406: else if (*(ptr-1) == '/')
407: data->type = 'N';
408: } else if (*(path+strlen(path)-1) == '/') {
409: *(path+strlen(path)-1) = '\0';
410: data->type = 'N';
411: }
412: if (data->type && PROT_TRACE)
1.78 eric 413: HTTrace("FTPParse.... Datatype %c\n", data->type);
1.60 frystyk 414: StrAllocCopy(data->file, path);
415: data->offset = data->file;
1.77 frystyk 416: HT_FREE(login);
417: HT_FREE(path);
1.60 frystyk 418: return YES;
1.22 frystyk 419: }
420:
1.60 frystyk 421: /* Use LIST or NLST
422: ** ----------------
423: ** This function sets the type field for what type of list we can use
424: ** Returns YES if OK, else NO
425: */
1.63 frystyk 426: PRIVATE BOOL FTPListType (ftp_data * data, FTPServerType type)
1.60 frystyk 427: {
428: if (!data) return NO;
429: switch (type) {
430: case FTP_GENERIC: data->type='N'; break;
431: case FTP_MACHTEN: data->type='L'; break;
432: case FTP_UNIX: data->type='L'; break;
433: case FTP_VMS: data->type='L'; break;
434: case FTP_CMS: data->type='N'; break;
435: case FTP_DCTS: data->type='N'; break;
436: case FTP_TCPC: data->type='N'; break;
437: case FTP_PETER_LEWIS: data->type='L'; break;
438: case FTP_NCSA: data->type='N'; break;
439: case FTP_WINNT: data->type='L'; break;
440: default: data->type='N'; break;
441: }
442: return YES;
443: }
444:
445: /* Open a Data socket for listening on
446: ** -----------------------------------
447: ** Set up a port to listen for data
448: ** Returns YES if OK, else NO
1.22 frystyk 449: */
1.60 frystyk 450: PRIVATE BOOL ListenSocket (HTNet *cnet, HTNet *dnet, ftp_data *data)
1.22 frystyk 451: {
1.79 frystyk 452: #ifdef FTP_POLL_PORTS
1.60 frystyk 453: unsigned short old_DataPort = DataPort;
454: for (DataPort=old_DataPort+1;; DataPort++) {
455: if (DataPort > LAST_TCP_PORT)
456: DataPort = FIRST_TCP_PORT;
457: if (DataPort == old_DataPort) {
1.78 eric 458: if(PROT_TRACE) HTTrace("FTP......... No data port found\n");
1.60 frystyk 459: return NO;
460: }
1.71 frystyk 461: if (HTDoListen(dnet, DataPort, 1) == HT_OK)
1.60 frystyk 462: break;
463: if (dnet->sockfd != INVSOC) {
464: NETCLOSE(dnet->sockfd);
465: dnet->sockfd = INVSOC:
466: }
1.22 frystyk 467: }
1.60 frystyk 468: #else
1.71 frystyk 469: if (HTDoListen(dnet, 0, cnet->sockfd, 1) != HT_OK) return NO;
1.79 frystyk 470: #endif /* FTP_POLL_PORTS */
1.22 frystyk 471:
1.60 frystyk 472: /* Now we must find out who we are to tell the other guy */
473: {
474: SockA local_addr;
475: int addr_size = sizeof(local_addr);
476: memset((void *) &local_addr, '\0', sizeof(local_addr));
477: if (getsockname(dnet->sockfd, (struct sockaddr *) &local_addr,
478: &addr_size) < 0) {
1.68 frystyk 479: HTRequest_addSystemError(dnet->request, ERR_FATAL, socerrno,
480: NO, "getsockname");
1.60 frystyk 481: return NO;
1.22 frystyk 482: }
1.78 eric 483: if (PROT_TRACE) HTTrace("FTP......... This host is `%s\'\n",
1.60 frystyk 484: HTInetString(&local_addr));
485: {
486: u_long addr = local_addr.sin_addr.s_addr;
487: u_short port = local_addr.sin_port;
488: sprintf(data->host, "%d,%d,%d,%d,%d,%d",
489: (int)*((unsigned char *)(&addr)+0),
490: (int)*((unsigned char *)(&addr)+1),
491: (int)*((unsigned char *)(&addr)+2),
492: (int)*((unsigned char *)(&addr)+3),
493: (int)*((unsigned char *)(&port)+0),
494: (int)*((unsigned char *)(&port)+1));
1.22 frystyk 495: }
496: }
1.60 frystyk 497: return YES;
1.22 frystyk 498: }
499:
1.60 frystyk 500: /* HTFTPLogin
501: ** -----------
502: ** This function makes a login to a ftp-server. It takes the user name
503: ** and passwd specified in ctrl->user and if that fails or an additional
504: ** account is needed, the user is prompted.
505: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.22 frystyk 506: */
1.60 frystyk 507: PRIVATE int HTFTPLogin (HTRequest *request, HTNet *cnet, ftp_ctrl *ctrl)
1.22 frystyk 508: {
1.60 frystyk 509: int status;
510: typedef enum _state {
511: SUB_ERROR = -2,
512: SUB_SUCCESS = -1,
513: NEED_SELECT = 0,
514: NEED_GREETING,
515: NEED_REIN,
516: NEED_UID,
517: NEED_PASSWD,
518: NEED_ACCOUNT,
519: PROMPT_USER
520: } state;
521:
522: /* Jump into a second level state machine */
523: while (1) {
524: switch ((state) ctrl->substate) {
525: case NEED_SELECT:
526: ctrl->substate = ctrl->reset ? NEED_REIN : NEED_GREETING;
527: break;
528:
529: case NEED_GREETING:
1.81 frystyk 530: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 531: if (status == HT_WOULD_BLOCK)
532: return HT_WOULD_BLOCK;
533: else if (status == HT_LOADED) {
1.66 frystyk 534: if (ctrl->repcode/100 == 2) {
535: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
536: NEED_UID : PROMPT_USER;
537: } else
1.60 frystyk 538: ctrl->substate = SUB_ERROR;
539: } else
540: ctrl->substate = SUB_ERROR;
541: break;
542:
543: case NEED_REIN:
544: if (!ctrl->sent) {
545: status = SendCommand(request, ctrl, "REIN", NULL);
546: if (status == HT_WOULD_BLOCK)
547: return HT_WOULD_BLOCK;
548: else if (status == HT_ERROR)
549: ctrl->substate = SUB_ERROR;
550: ctrl->sent = YES;
551: } else {
1.81 frystyk 552: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 553: if (status == HT_WOULD_BLOCK)
554: return HT_WOULD_BLOCK;
555: else if (status == HT_LOADED) {
1.66 frystyk 556: if (ctrl->repcode/100 == 2) {
557: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
558: NEED_UID : PROMPT_USER;
559: } else
1.60 frystyk 560: ctrl->substate = SUB_SUCCESS; /* hope the best */
561: } else
562: ctrl->substate = SUB_ERROR;
563: ctrl->sent = NO;
1.22 frystyk 564: }
1.60 frystyk 565: break;
566:
567: case NEED_UID:
568: if (!ctrl->sent) {
569: status = SendCommand(request, ctrl, "USER", ctrl->uid);
570: if (status == HT_WOULD_BLOCK)
571: return HT_WOULD_BLOCK;
572: else if (status == HT_ERROR)
573: ctrl->substate = SUB_ERROR;
574: ctrl->sent = YES;
1.22 frystyk 575: } else {
1.81 frystyk 576: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 577: if (status == HT_WOULD_BLOCK)
578: return HT_WOULD_BLOCK;
579: else if (status == HT_LOADED) {
580: int code = ctrl->repcode/100;
581: if (code == 2) /* Logged in w/o passwd! */
582: ctrl->substate = SUB_SUCCESS;
1.66 frystyk 583: else if (code == 3) { /* Password demanded */
584: ctrl->substate = (ctrl->passwd && *ctrl->passwd) ?
585: NEED_PASSWD : PROMPT_USER;
586: } else if (ctrl->repcode == 530)
1.60 frystyk 587: ctrl->substate = PROMPT_USER; /* User unknown */
588: else
589: ctrl->substate = SUB_ERROR;
590: } else
591: ctrl->substate = SUB_ERROR;
592: ctrl->sent = NO;
1.22 frystyk 593: }
1.60 frystyk 594: break;
1.1 timbl 595:
1.60 frystyk 596: case NEED_PASSWD:
597: if (!ctrl->sent) {
598: status = SendCommand(request, ctrl, "PASS", ctrl->passwd);
599: if (status == HT_WOULD_BLOCK)
600: return HT_WOULD_BLOCK;
601: else if (status == HT_ERROR)
602: ctrl->substate = SUB_ERROR;
603: ctrl->sent = YES;
604: } else {
1.81 frystyk 605: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 606: if (status == HT_WOULD_BLOCK)
607: return HT_WOULD_BLOCK;
608: else if (status == HT_LOADED) {
609: int code = ctrl->repcode/100;
610: if (code == 2) /* Logged in with passwd */
611: ctrl->substate = SUB_SUCCESS;
1.70 frystyk 612: else if (code == 3) { /* Account required */
613: HTAlertCallback *cbf = HTAlert_find(HT_A_PROMPT);
614: HTAlertPar * reply = HTAlert_newReply();
615: if (cbf && (*cbf)(request, HT_A_PROMPT,
616: HT_MSG_ACCOUNT, NULL, NULL, reply)) {
617: ctrl->account = HTAlert_replyMessage(reply);
1.60 frystyk 618: ctrl->substate = NEED_ACCOUNT;
1.70 frystyk 619: } else
1.60 frystyk 620: ctrl->substate = SUB_ERROR;
1.70 frystyk 621: HTAlert_deleteReply(reply);
1.60 frystyk 622: } else if (ctrl->repcode == 530)
623: ctrl->substate = PROMPT_USER;
624: else
625: ctrl->substate = SUB_ERROR;
626: } else
627: ctrl->substate = SUB_ERROR;
628: ctrl->sent = NO;
629: }
630: break;
1.1 timbl 631:
1.60 frystyk 632: case NEED_ACCOUNT:
633: if (!ctrl->sent) {
634: status = SendCommand(request, ctrl, "ACCT", ctrl->account);
635: if (status == HT_WOULD_BLOCK)
636: return HT_WOULD_BLOCK;
637: else if (status == HT_ERROR)
638: ctrl->substate = SUB_ERROR;
639: ctrl->sent = YES;
1.23 frystyk 640: } else {
1.81 frystyk 641: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 642: if (status == HT_WOULD_BLOCK)
643: return HT_WOULD_BLOCK;
644: else if (status == HT_LOADED) {
645: int code = ctrl->repcode/100;
646: if (code == 2) /* Logged in with account */
647: ctrl->substate = SUB_SUCCESS;
648: else
649: ctrl->substate = SUB_ERROR; /* hopeless */
650: } else
651: ctrl->substate = SUB_ERROR;
652: ctrl->sent = NO;
1.1 timbl 653: }
1.60 frystyk 654: break;
1.1 timbl 655:
1.60 frystyk 656: case PROMPT_USER:
657: {
1.70 frystyk 658: HTAlertCallback *cbf = HTAlert_find(HT_A_USER_PW);
659: HTAlertPar * reply = HTAlert_newReply();
1.77 frystyk 660: HT_FREE(ctrl->uid);
661: HT_FREE(ctrl->passwd);
1.70 frystyk 662: if (cbf &&
663: (*cbf)(request, HT_A_USER_PW,HT_MSG_NULL,NULL,NULL,reply)){
664: ctrl->uid = HTAlert_replyMessage(reply);
665: ctrl->passwd = HTAlert_replySecret(reply);
666: }
667: HTAlert_deleteReply(reply);
1.66 frystyk 668: if (ctrl->uid && *ctrl->uid && ctrl->passwd && *ctrl->passwd)
1.60 frystyk 669: ctrl->substate = NEED_UID;
670: else
671: ctrl->substate = SUB_ERROR;
672: }
673: break;
1.1 timbl 674:
1.60 frystyk 675: case SUB_ERROR:
676: if (PROT_TRACE)
1.78 eric 677: HTTrace("FTP......... Login failed\n");
1.60 frystyk 678: ctrl->substate = 0;
679: return HT_ERROR;
680: break;
1.23 frystyk 681:
1.60 frystyk 682: case SUB_SUCCESS:
1.43 frystyk 683: if (PROT_TRACE)
1.78 eric 684: HTTrace("FTP......... Logged in as `%s\'\n", ctrl->uid);
1.60 frystyk 685: ctrl->substate = 0;
686: return HT_OK;
687: break;
1.23 frystyk 688: }
1.22 frystyk 689: }
690: }
691:
1.60 frystyk 692: /* HTFTPDataConnection
693: ** -------------------
694: ** Prepares a data connection to the server and initializes the
695: ** transfer mode.
696: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.1 timbl 697: */
1.60 frystyk 698: PRIVATE int HTFTPDataConnection (HTRequest * request, HTNet *cnet,
699: ftp_ctrl *ctrl, ftp_data *data)
1.1 timbl 700: {
1.60 frystyk 701: int status;
702: HTNet *dnet = ctrl->dnet;
703: typedef enum _state {
704: SUB_ERROR = -2,
705: SUB_SUCCESS = -1,
706: NEED_TYPE = 0,
707: NEED_SELECT,
708: NEED_PASV,
709: NEED_PORT
710: } state;
711:
712: /* Jump into a second level state machine */
713: while (1) {
714: switch ((state) ctrl->substate) {
715: case NEED_TYPE:
716: if(!data->type|| data->pasv || data->type=='N' || data->type=='L'){
717: ctrl->substate = NEED_SELECT;
718: break;
719: }
720: if (!ctrl->sent) {
721: char type[2];
722: *type = data->type;
723: *(type+1) = '\0';
724: status = SendCommand(request, ctrl, "TYPE", type);
725: if (status == HT_WOULD_BLOCK)
726: return HT_WOULD_BLOCK;
727: else if (status == HT_ERROR)
728: ctrl->substate = SUB_ERROR;
729: ctrl->sent = YES;
730: } else {
1.81 frystyk 731: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 732: if (status == HT_WOULD_BLOCK)
733: return HT_WOULD_BLOCK;
734: else if (status == HT_LOADED) {
735: if (ctrl->repcode/100 == 2)
736: ctrl->substate = NEED_SELECT;
737: else
738: ctrl->substate = SUB_ERROR;
739: } else
740: ctrl->substate = SUB_ERROR;
741: ctrl->sent = NO;
742: }
743: break;
744:
745: case NEED_SELECT:
746: if (FTPMode & FTP_DATA_PASV && !data->pasv)
747: ctrl->substate = NEED_PASV;
748: else if (ListenSocket(cnet, dnet, data))
749: ctrl->substate = NEED_PORT;
750: else
751: ctrl->substate = SUB_ERROR;
752: break;
753:
754: case NEED_PASV:
755: if (!ctrl->sent) {
756: status = SendCommand(request, ctrl, "PASV", NULL);
757: if (status == HT_WOULD_BLOCK)
758: return HT_WOULD_BLOCK;
759: else if (status == HT_ERROR)
760: ctrl->substate = SUB_ERROR;
761: ctrl->sent = YES;
762: } else {
1.81 frystyk 763: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 764: if (status == HT_WOULD_BLOCK)
765: return HT_WOULD_BLOCK;
766: else if (status == HT_LOADED) {
767: if (ctrl->repcode == 227) {
768: /*
769: ** If succes, we have to scan for the returned number.
770: ** As the format for the response isn't standard,
771: ** the best thing to do is to scan for the first digit
772: ** after the status code, see RFC1123
773: */
774: char *host = ctrl->reply;
775: int h0, h1, h2, h3, p0=0, p1=0;
776: while (*host && !isdigit(*host++));
777: if (!*host || sscanf(--host, "%d,%d,%d,%d,%d,%d",
778: &h0,&h1,&h2,&h3,&p0,&p1) < 6) {
779: if (PROT_TRACE)
1.78 eric 780: HTTrace("FTP......... PASV No addr\n");
1.60 frystyk 781: ctrl->substate = SUB_ERROR;
782: break;
783: } else {
784: int port = (p0<<8)+p1;
785: sprintf(data->host, "ftp://%d.%d.%d.%d:%d/",
786: h0, h1, h2, h3, port);
787: data->pasv = YES;
788: ctrl->substate = SUB_SUCCESS;
789: }
790: } else {
791: ctrl->substate = ListenSocket(cnet, dnet, data) ?
792: NEED_PORT : SUB_ERROR;
793: }
794: } else
795: ctrl->substate = SUB_ERROR;
796: ctrl->sent = NO;
797: }
798: break;
1.22 frystyk 799:
1.60 frystyk 800: case NEED_PORT:
801: if (!ctrl->sent) {
802: status = SendCommand(request, ctrl, "PORT", data->host);
803: if (status == HT_WOULD_BLOCK)
804: return HT_WOULD_BLOCK;
805: else if (status == HT_ERROR)
806: ctrl->substate = SUB_ERROR;
807: ctrl->sent = YES;
808: } else {
1.81 frystyk 809: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 810: if (status == HT_WOULD_BLOCK)
811: return HT_WOULD_BLOCK;
812: else if (status == HT_LOADED) {
813: data->pasv = NO;
814: ctrl->substate = (ctrl->repcode/100 == 2) ?
815: SUB_SUCCESS : SUB_ERROR;
816: } else
817: ctrl->substate = SUB_ERROR;
818: ctrl->sent = NO;
819: }
820: break;
1.1 timbl 821:
1.60 frystyk 822: case SUB_ERROR:
823: if (PROT_TRACE)
1.78 eric 824: HTTrace("FTP......... Can't setup data connection\n");
1.60 frystyk 825: ctrl->substate = 0;
826: return HT_ERROR;
827: break;
1.1 timbl 828:
1.60 frystyk 829: case SUB_SUCCESS:
830: if (PROT_TRACE)
1.78 eric 831: HTTrace("FTP......... Data connection negotiated\n");
1.60 frystyk 832: ctrl->substate = 0;
833: return HT_OK;
834: break;
1.23 frystyk 835: }
1.58 frystyk 836: }
1.23 frystyk 837: }
1.1 timbl 838:
839:
1.60 frystyk 840: /* HTFTPServerInfo
841: ** ---------------
842: ** This function finds out what server we are talking to.
843: ** Maybe we can upgrade from NLST to LIST.
844: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
845: ** Thanks to James.W.Matthews@Dartmouth.EDU (James W. Matthews) for making
846: ** his code available.
1.1 timbl 847: */
1.60 frystyk 848: PRIVATE int HTFTPServerInfo (HTRequest *request, HTNet *cnet,
849: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 850: {
1.60 frystyk 851: int status;
852: typedef enum _state {
853: SUB_ERROR = -2,
854: SUB_SUCCESS = -1,
855: NEED_SYST = 0,
856: CHECK_SYST,
857: NEED_PWD,
858: CHECK_PWD
859: } state;
860:
861: /* Jump into a second level state machine */
862: while (1) {
863: switch ((state) ctrl->substate) {
864: case NEED_SYST:
865: if (!ctrl->sent) {
1.63 frystyk 866: if (ctrl->server != FTP_UNSURE) {
1.60 frystyk 867: FTPListType(data, ctrl->server);
868: return HT_OK;
869: }
870: status = SendCommand(request, ctrl, "SYST", NULL);
871: if (status == HT_WOULD_BLOCK)
872: return HT_WOULD_BLOCK;
873: else if (status == HT_ERROR)
874: ctrl->substate = SUB_ERROR;
875: ctrl->sent = YES;
876: } else {
1.81 frystyk 877: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 878: if (status == HT_WOULD_BLOCK)
879: return HT_WOULD_BLOCK;
880: else if (status == HT_LOADED) {
881: ctrl->substate=ctrl->repcode==215 ? CHECK_SYST : NEED_PWD;
882: } else
883: ctrl->substate = SUB_ERROR;
884: ctrl->sent = NO;
1.23 frystyk 885: }
886: break;
887:
1.60 frystyk 888: case CHECK_SYST:
1.23 frystyk 889: {
1.60 frystyk 890: char *reply = ctrl->reply;
891: if (!*reply) {
1.43 frystyk 892: if (PROT_TRACE)
1.78 eric 893: HTTrace("FTP......... No server info?\n");
1.60 frystyk 894: ctrl->substate = NEED_PWD;
1.23 frystyk 895: break;
896: }
1.60 frystyk 897: if (strncmp(reply, "UNIX Type: L8MAC-OSMachTen", 28) == 0) {
898: ctrl->server = FTP_MACHTEN;
899: } else if (strstr(reply, "UNIX") != NULL) {
900: ctrl->server = FTP_UNIX;
901: } else if (strncmp(reply, "VMS", 3) == 0) {
902: ctrl->server = FTP_VMS;
903: } else if ((strncmp(reply, "VM/CMS", 6) == 0) ||
904: (strncmp(reply, "VM", 2) == 0)) {
905: ctrl->server = FTP_CMS;
906: } else if (strncmp(reply, "DCTS", 4) == 0) {
907: ctrl->server = FTP_DCTS;
908: } else if (strstr(reply, "MAC-OS TCP/ConnectII") != NULL) {
1.23 frystyk 909: /* Check old versions of TCP/C using / in pathnames */
1.63 frystyk 910: ctrl->server = FTP_TCPC + FTP_UNSURE;
1.60 frystyk 911: } else if (strncmp(reply, "MACOS Peter's Server", 20) == 0) {
912: ctrl->server = FTP_PETER_LEWIS;
913: } else if (strncmp(reply, "Windows_NT", 10) == 0) {
914: ctrl->server = FTP_WINNT;
1.23 frystyk 915: }
916:
917: /* If we are unsure, try PWD to get more information */
1.60 frystyk 918: if (ctrl->server & FTP_UNSURE)
919: ctrl->substate = NEED_PWD;
1.23 frystyk 920: else
1.60 frystyk 921: ctrl->substate = SUB_SUCCESS;
1.1 timbl 922: }
1.23 frystyk 923: break;
924:
925: case NEED_PWD:
1.60 frystyk 926: if (!ctrl->sent) {
927: status = SendCommand(request, ctrl, "PWD", NULL);
928: if (status == HT_WOULD_BLOCK)
929: return HT_WOULD_BLOCK;
930: else if (status == HT_ERROR)
931: ctrl->substate = SUB_ERROR;
932: ctrl->sent = YES;
1.23 frystyk 933: } else {
1.81 frystyk 934: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 935: if (status == HT_WOULD_BLOCK)
936: return HT_WOULD_BLOCK;
937: else if (status == HT_LOADED) {
938: ctrl->substate = (ctrl->repcode/100 == 2) ?
939: CHECK_PWD : SUB_ERROR;
940: } else
941: ctrl->substate = SUB_ERROR;
942: ctrl->sent = NO;
1.23 frystyk 943: }
944: break;
945:
1.60 frystyk 946: case CHECK_PWD:
947: {
948: char *start = strchr(ctrl->reply, '"');
949: char *end;
950: if (!start || (end = strchr(++start, '"')) == NULL) {
1.43 frystyk 951: if (PROT_TRACE)
1.78 eric 952: HTTrace("FTP......... No current directory?\n");
1.60 frystyk 953: ctrl->server = FTP_GENERIC;
1.23 frystyk 954: } else {
1.60 frystyk 955: *end = '\0';
1.63 frystyk 956: if (ctrl->server & FTP_TCPC) {
1.60 frystyk 957: ctrl->server = *start == '/' ? FTP_NCSA : FTP_TCPC;
958: } else if (*start == '/') {
959: /* path names starting with / imply Unix, right? */
960: ctrl->server = FTP_UNIX;
961: } else if (*(end-1) == ']') {
962: /* path names ending with ] imply VMS, right? */
963: ctrl->server = FTP_VMS;
964: } else
965: ctrl->server = FTP_GENERIC;
1.23 frystyk 966: }
1.60 frystyk 967: ctrl->substate = SUB_SUCCESS;
1.1 timbl 968: }
1.23 frystyk 969: break;
1.1 timbl 970:
1.60 frystyk 971: case SUB_ERROR:
972: if (PROT_TRACE)
1.78 eric 973: HTTrace("FTP......... Can't get server information\n");
1.60 frystyk 974: ctrl->substate = 0;
1.63 frystyk 975: ctrl->server = FTP_GENERIC;
1.60 frystyk 976: return HT_ERROR;
1.23 frystyk 977: break;
1.22 frystyk 978:
1.60 frystyk 979: case SUB_SUCCESS:
1.81 frystyk 980: {
981: HTHost * host = HTNet_host(cnet);
982: if (PROT_TRACE)
983: HTTrace("FTP Server.. Guessed type %d\n", ctrl->server);
984: HTHost_setVersion(host, ctrl->server);
985: FTPListType(data, ctrl->server);
986: ctrl->substate = 0;
987: return HT_OK;
988: break;
989: }
1.22 frystyk 990: }
1.23 frystyk 991: }
992: }
993:
1.60 frystyk 994: /* HTFTPGetData
995: ** ------------
996: ** This function asks for the file or a directory. First we try in one go,
1.23 frystyk 997: ** but if that doesn't work, then we use CWD for each segment and then
998: ** try to retrieve it. If that also fails, then we try if it is a
1.60 frystyk 999: ** directory.
1000: ** Returns HT_OK, HT_LOADED, HT_ERROR, or HT_WOULD_BLOCK
1.23 frystyk 1001: */
1.71 frystyk 1002: PRIVATE int HTFTPGetData (HTRequest *request, HTNet *cnet, SOCKET sockfd,
1.60 frystyk 1003: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 1004: {
1005: int status;
1.60 frystyk 1006: char *segment = NULL;
1007: HTNet *dnet = ctrl->dnet;
1008: typedef enum _state {
1009: SUB_ERROR = -2,
1010: SUB_SUCCESS = -1,
1011: NEED_SELECT = 0,
1012: NEED_CONNECT,
1013: NEED_ACCEPT,
1014: NEED_ACTION,
1015: NEED_CWD,
1016: NEED_SEGMENT,
1017: NEED_STREAM,
1.63 frystyk 1018: NEED_BODY
1.60 frystyk 1019: } state;
1020:
1021: /* Jump into a second level state machine */
1022: while (1) {
1023: switch ((state) ctrl->substate) {
1024: case NEED_SELECT:
1025: ctrl->substate = data->pasv ? NEED_CONNECT : NEED_ACTION;
1026: break;
1027:
1028: case NEED_CONNECT:
1029: status = HTDoConnect(dnet, data->host, FTP_DATA);
1030: if (status == HT_WOULD_BLOCK)
1031: return HT_WOULD_BLOCK;
1032: else if (status == HT_OK) {
1033: if (PROT_TRACE)
1.78 eric 1034: HTTrace("FTP Data.... Active data socket %d\n",
1.60 frystyk 1035: dnet->sockfd);
1.81 frystyk 1036: HTNet_setPersistent(dnet, YES);
1037: HTChannel_setMode(dnet->channel, HT_CH_BATCH);
1.60 frystyk 1038: ctrl->substate = NEED_ACTION;
1.81 frystyk 1039: } else { /* Swap to PORT on the fly */
1.60 frystyk 1040: NETCLOSE(dnet->sockfd);
1041: dnet->sockfd = INVSOC;
1042: if (PROT_TRACE)
1.78 eric 1043: HTTrace("FTP......... Swap to PORT on the fly\n");
1.60 frystyk 1044: ctrl->substate = 0;
1.77 frystyk 1045: HT_FREE(segment);
1.60 frystyk 1046: return HT_OK;
1047: }
1.23 frystyk 1048: break;
1049:
1.60 frystyk 1050: case NEED_ACCEPT:
1051: {
1.72 frystyk 1052: SOCKET oldsocket = dnet->sockfd;
1053: status = HTDoAccept(dnet);
1.60 frystyk 1054: if (status == HT_WOULD_BLOCK)
1055: return HT_WOULD_BLOCK;
1056: else if (status == HT_OK) {
1057: if (PROT_TRACE)
1.78 eric 1058: HTTrace("FTP Data.... Passive data socket %d\n",
1.72 frystyk 1059: dnet->sockfd);
1060: NETCLOSE(oldsocket); /* We only accept one socket */
1.43 frystyk 1061: if (PROT_TRACE)
1.78 eric 1062: HTTrace("FTP Data.... New data socket %d\n",
1.60 frystyk 1063: dnet->sockfd);
1064: ctrl->substate = NEED_STREAM;
1065: } else
1066: ctrl->substate = SUB_ERROR;
1.23 frystyk 1067: }
1.60 frystyk 1068: break;
1.33 frystyk 1069:
1.60 frystyk 1070: case NEED_ACTION:
1071: if (!ctrl->sent) {
1072: char *cmd = (data->type=='L') ? "LIST" :
1073: (data->type=='N') ? "NLST" : "RETR";
1074: StrAllocCopy(segment, data->offset);
1075: HTUnEscape(segment);
1076: HTCleanTelnetString(segment);
1077: status = SendCommand(request, ctrl, cmd, segment);
1.77 frystyk 1078: HT_FREE(segment);
1.60 frystyk 1079: if (status == HT_WOULD_BLOCK)
1080: return HT_WOULD_BLOCK;
1081: else if (status == HT_ERROR)
1082: ctrl->substate = SUB_ERROR;
1083: ctrl->sent = YES;
1084: } else {
1.81 frystyk 1085: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 1086: if (status == HT_WOULD_BLOCK)
1087: return HT_WOULD_BLOCK;
1088: else if (status == HT_LOADED) {
1089: int code = ctrl->repcode;
1090: if (code==125 || code==150 || code==225)
1091: ctrl->substate=data->pasv ? NEED_STREAM : NEED_ACCEPT;
1092: else if (code/100==5 && !ctrl->cwd)
1093: ctrl->substate = NEED_SEGMENT;
1094: else
1095: ctrl->substate = SUB_ERROR;
1096: } else
1097: ctrl->substate = SUB_ERROR;
1098: ctrl->sent = NO;
1.23 frystyk 1099: }
1100: break;
1.60 frystyk 1101:
1102: case NEED_SEGMENT:
1.23 frystyk 1103: {
1.60 frystyk 1104: char *ptr;
1105: if (data->offset == data->file) {
1.63 frystyk 1106: if (ctrl->server == FTP_VMS) { /* Change to root */
1.77 frystyk 1107: if ((segment = (char *) HT_MALLOC(strlen(ctrl->uid)+3)) == NULL)
1108: HT_OUTOFMEM("segment ");
1.63 frystyk 1109: sprintf(segment, "[%s]", ctrl->uid);
1110: } else
1111: StrAllocCopy(segment, "/");
1.60 frystyk 1112: data->offset++;
1113: ctrl->substate = NEED_CWD;
1114: } else {
1115: if ((ptr = strchr(data->offset, '/'))) {
1116: *ptr='\0';
1117: StrAllocCopy(segment, data->offset);
1118: *ptr='/';
1119: data->offset = ++ptr;
1120: HTUnEscape(segment);
1121: HTCleanTelnetString(segment);
1122: ctrl->substate = NEED_CWD;
1.33 frystyk 1123: } else
1.60 frystyk 1124: ctrl->substate = NEED_ACTION;
1.23 frystyk 1125: }
1126: }
1127: break;
1128:
1.60 frystyk 1129: case NEED_CWD:
1130: if (!ctrl->sent) {
1131: status = SendCommand(request, ctrl, "CWD", segment);
1.77 frystyk 1132: HT_FREE(segment);
1.60 frystyk 1133: if (status == HT_WOULD_BLOCK)
1134: return HT_WOULD_BLOCK;
1135: else if (status == HT_ERROR)
1136: ctrl->substate = SUB_ERROR;
1137: ctrl->cwd = YES;
1138: ctrl->sent = YES;
1139: } else {
1.81 frystyk 1140: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 1141: if (status == HT_WOULD_BLOCK)
1142: return HT_WOULD_BLOCK;
1143: else if (status == HT_LOADED) {
1144: if (ctrl->repcode/100 == 2)
1145: ctrl->substate = NEED_SEGMENT;
1146: else
1147: ctrl->substate = SUB_ERROR;
1148: } else
1149: ctrl->substate = SUB_ERROR;
1150: ctrl->sent = NO;
1.33 frystyk 1151: }
1.60 frystyk 1152: break;
1.33 frystyk 1153:
1.81 frystyk 1154: case NEED_STREAM:
1155: /*
1156: ** Create the stream pipe FROM the channel to the application.
1157: ** The target for the input stream pipe is set up using the
1158: ** stream stack.
1159: */
1160: {
1161: HTStream * target;
1162: if (FTP_DIR(data)) {
1163: target = HTFTPDir_new(request,ctrl->server,data->type);
1164: } else {
1165: target = HTStreamStack(HTAnchor_format(request->anchor),
1166: request->output_format,
1167: request->output_stream,
1168: request, YES);
1169: }
1170: HTNet_getInput(dnet, target, NULL, 0);
1171: sockfd = dnet->sockfd; /* Ensure that we try data first */
1172: ctrl->substate = NEED_BODY;
1173: #if 0
1.60 frystyk 1174: {
1.63 frystyk 1175: if (FTP_DIR(data)) {
1.69 frystyk 1176: dnet->target=HTFTPDir_new(request,ctrl->server,data->type);
1.63 frystyk 1177: } else {
1178: dnet->target =
1179: HTStreamStack(HTAnchor_format(request->anchor),
1180: request->output_format,
1181: request->output_stream,
1182: request,YES);
1183: }
1.60 frystyk 1184: }
1.81 frystyk 1185: #endif
1186: }
1187: break;
1.23 frystyk 1188:
1.60 frystyk 1189: case NEED_BODY:
1.63 frystyk 1190: if (sockfd == dnet->sockfd) {
1.81 frystyk 1191: status = (*dnet->input->isa->read)(dnet->input);
1.63 frystyk 1192: if (status == HT_WOULD_BLOCK)
1193: return HT_WOULD_BLOCK;
1.75 frystyk 1194: else if (status == HT_LOADED || status == HT_CLOSED) {
1.63 frystyk 1195: if (data->ready)
1196: ctrl->substate = SUB_SUCCESS;
1197: else
1198: sockfd = cnet->sockfd;
1199: data->ready = YES;
1.76 frystyk 1200: } else {
1.63 frystyk 1201: ctrl->substate = SUB_ERROR;
1.76 frystyk 1202: data->stream_error = YES;
1203: }
1.63 frystyk 1204: } else {
1.81 frystyk 1205: status = (*cnet->input->isa->read)(cnet->input);
1.63 frystyk 1206: if (status == HT_WOULD_BLOCK)
1207: return HT_WOULD_BLOCK;
1208: else if (status == HT_LOADED) {
1209: if (ctrl->repcode/100 == 2) {
1210: if (data->ready)
1211: ctrl->substate = SUB_SUCCESS;
1212: else
1213: sockfd = dnet->sockfd;
1214: data->ready = YES;
1215: } else
1216: ctrl->substate = SUB_ERROR;
1217: } else
1.60 frystyk 1218: ctrl->substate = SUB_ERROR;
1.63 frystyk 1219: }
1.23 frystyk 1220: break;
1.22 frystyk 1221:
1.60 frystyk 1222: case SUB_ERROR:
1223: if (PROT_TRACE)
1.78 eric 1224: HTTrace("FTP......... Can't retrieve object\n");
1.60 frystyk 1225: ctrl->substate = 0;
1.77 frystyk 1226: HT_FREE(segment);
1.60 frystyk 1227: return HT_ERROR;
1.23 frystyk 1228: break;
1229:
1.60 frystyk 1230: case SUB_SUCCESS:
1231: if (PROT_TRACE)
1.78 eric 1232: HTTrace("FTP......... Object is loaded\n");
1.60 frystyk 1233: ctrl->substate = 0;
1.77 frystyk 1234: HT_FREE(segment);
1.60 frystyk 1235: return HT_LOADED;
1.23 frystyk 1236: break;
1.1 timbl 1237: }
1238: }
1.23 frystyk 1239: }
1.1 timbl 1240:
1.23 frystyk 1241: /* ------------------------------------------------------------------------- */
1242:
1243: /* Retrieve File from Server as an atomic action.
1244: ** -----------------------------------------------
1.58 frystyk 1245: ** Given a hypertext address, this routine loads a document.
1.23 frystyk 1246: **
1247: ** On entry,
1.58 frystyk 1248: ** request This is the request structure
1249: ** returns HT_ERROR Error has occured in call back
1250: ** HT_OK Call back was OK
1251: */
1.65 frystyk 1252: PUBLIC int HTLoadFTP (SOCKET soc, HTRequest * request, SockOps ops)
1.58 frystyk 1253: {
1254: int status = HT_ERROR;
1.60 frystyk 1255: HTNet *cnet = request->net;
1.58 frystyk 1256: ftp_ctrl *ctrl;
1.60 frystyk 1257: ftp_data *data;
1.58 frystyk 1258: char *url = HTAnchor_physical(request->anchor);
1.23 frystyk 1259:
1.58 frystyk 1260: /*
1.60 frystyk 1261: ** Initiate a new FTP ctrl and data structure and bind to request structure
1.58 frystyk 1262: ** This is actually state FTP_BEGIN, but it can't be in the state
1263: ** machine as we need the structure first.
1264: */
1265: if (ops == FD_NONE) {
1.78 eric 1266: if (PROT_TRACE) HTTrace("FTP......... Looking for `%s\'\n",url);
1.77 frystyk 1267: if ((ctrl = (ftp_ctrl *) HT_CALLOC(1, sizeof(ftp_ctrl))) == NULL ||
1268: (data = (ftp_data *) HT_CALLOC(1, sizeof(ftp_data))) == NULL)
1269: HT_OUTOFMEM("HTLoadFTP");
1.73 frystyk 1270: ctrl->cmd = HTChunk_new(128);
1.58 frystyk 1271: ctrl->state = FTP_BEGIN;
1.60 frystyk 1272: ctrl->server = FTP_UNSURE;
1.74 frystyk 1273: ctrl->dnet = HTNet_dup(cnet);
1.60 frystyk 1274: cnet->context = ctrl; /* Context for control connection */
1275: ctrl->dnet->context = data; /* Context for data connection */
1276: } else if (ops == FD_CLOSE) { /* Interrupted */
1277: if(HTRequest_isPostWeb(request)&&!HTRequest_isMainDestination(request))
1278: FTPCleanup(request, HT_IGNORE);
1279: else
1280: FTPCleanup(request, HT_INTERRUPTED);
1281: return HT_OK;
1282: } else {
1283: ctrl = (ftp_ctrl *) cnet->context; /* Get existing copy */
1284: data = (ftp_data *) ctrl->dnet->context;
1285: }
1.58 frystyk 1286:
1287: /* Now jump into the machine. We know the state from the previous run */
1288: while (1) {
1289: switch (ctrl->state) {
1.60 frystyk 1290: case FTP_BEGIN:
1.83 ! frystyk 1291: HTFTPParseURL(request, url, ctrl, data);
1.60 frystyk 1292: if (data->type != 'N') {
1293: HTBind_getBindings(request->anchor);
1.81 frystyk 1294: #if 0
1.60 frystyk 1295: if (HTAnchor_encoding(request->anchor) != HTAtom_for("7bit"))
1.81 frystyk 1296: #endif
1.60 frystyk 1297: data->type = 'I';
1298: }
1299: ctrl->state = FTP_NEED_CCON;
1300: break;
1301:
1302: case FTP_NEED_CCON:
1303: status = HTDoConnect(cnet, url, FTP_PORT);
1304: if (status == HT_OK) {
1.81 frystyk 1305: HTHost * host = HTNet_host(cnet);
1306:
1307: /*
1308: ** Check the protocol class to see if we have connected to a
1309: ** the right class of server, in this case HTTP.
1310: */
1311: {
1312: char * s_class = HTHost_class(host);
1313: if (s_class && strcasecomp(s_class, "ftp")) {
1314: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1315: NULL, 0, "HTLoadNews");
1316: ctrl->state = FTP_ERROR;
1317: break;
1318: }
1319: HTHost_setClass(host, "ftp");
1320: }
1321:
1322: /* Check persistent connection */
1323: if (HTNet_persistent(cnet)) {
1324: ctrl->server = HTHost_version(host);
1325: if (PROT_TRACE)
1326: HTTrace("FTP Server.. Cache says type %d server\n",
1327: ctrl->server);
1328: ctrl->reset = 1;
1329: } else
1330: HTNet_setPersistent(cnet, YES);
1331: #if 0
1.60 frystyk 1332: char *s_class = HTDNS_serverClass(cnet->dns);
1333: if (s_class && strcasecomp(s_class, "ftp")) {
1.68 frystyk 1334: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1335: NULL, 0, "HTLoadFTP");
1.60 frystyk 1336: ctrl->state = FTP_ERROR;
1337: break;
1338: }
1339: HTDNS_setServerClass(cnet->dns, "ftp");
1.63 frystyk 1340: if (HTDNS_socket(cnet->dns) != INVSOC) {
1341: ctrl->server = HTDNS_serverVersion(cnet->dns);
1342: if (PROT_TRACE)
1.78 eric 1343: HTTrace("FTP Server.. We know from cache that this is a type %d server\n",
1.63 frystyk 1344: ctrl->server);
1.60 frystyk 1345: ctrl->reset = 1;
1.63 frystyk 1346: } else
1.60 frystyk 1347: HTDNS_setSocket(cnet->dns, cnet->sockfd);
1.81 frystyk 1348: #endif
1.23 frystyk 1349:
1.81 frystyk 1350: /*
1351: ** Create the stream pipe FROM the channel to the application.
1352: ** The target for the input stream pipe is set up using the
1353: ** stream stack.
1354: */
1355: HTNet_getInput(cnet, FTPStatus_new(request, ctrl), NULL, 0);
1.23 frystyk 1356:
1.60 frystyk 1357: /*
1.81 frystyk 1358: ** Create the stream pipe TO the channel from the application
1359: ** and hook it up to the request object
1360: */
1361: {
1362: HTOutputStream * output = HTNet_getOutput(cnet, NULL, 0);
1363: HTRequest_setInputStream(request, (HTStream *) output);
1364: }
1365:
1366: /*
1.60 frystyk 1367: ** Set up concurrent read/write if this request isn't the
1368: ** source for a PUT or POST. As source we don't start reading
1369: ** before all destinations are ready. If destination then
1370: ** register the input stream and get ready for read
1371: */
1372: if (HTRequest_isPostWeb(request)) {
1.82 eric 1373: HTEvent_register(cnet->sockfd, request, (SockOps) FD_READ,
1.60 frystyk 1374: HTLoadFTP, cnet->priority);
1375: HTRequest_linkDestination(request);
1376: }
1377:
1378: ctrl->state = FTP_NEED_LOGIN;
1379: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
1380: return HT_OK;
1381: else
1382: ctrl->state = FTP_ERROR; /* Error or interrupt */
1383: break;
1384:
1385: case FTP_NEED_LOGIN:
1386: status = HTFTPLogin(request, cnet, ctrl);
1387: if (status == HT_WOULD_BLOCK) return HT_OK;
1388: ctrl->state = (status == HT_OK) ? FTP_NEED_DCON : FTP_ERROR;
1389: break;
1390:
1391: case FTP_NEED_DCON:
1392: status = HTFTPDataConnection(request, cnet, ctrl, data);
1393: if (status == HT_WOULD_BLOCK) return HT_OK;
1394: if (status == HT_OK)
1395: ctrl->state = (data->type=='N') ?
1396: FTP_NEED_SERVER : FTP_NEED_DATA;
1397: else
1398: ctrl->state = FTP_ERROR;
1399: break;
1400:
1401: case FTP_NEED_DATA:
1.63 frystyk 1402: status = HTFTPGetData(request, cnet, soc, ctrl, data);
1.60 frystyk 1403: if (status == HT_WOULD_BLOCK) return HT_OK;
1404: if (status == HT_LOADED)
1405: ctrl->state = FTP_SUCCESS;
1406: else if (status == HT_OK)
1407: ctrl->state = FTP_NEED_DCON;
1.76 frystyk 1408: else if (!FTP_DIR(data) && !data->stream_error) {
1.60 frystyk 1409: FTPListType(data, ctrl->server);
1410: ctrl->state = FTP_NEED_SERVER; /* Try a dir instead? */
1411: } else
1412: ctrl->state = FTP_ERROR;
1413: break;
1.23 frystyk 1414:
1.60 frystyk 1415: case FTP_NEED_SERVER:
1416: status = HTFTPServerInfo(request, cnet, ctrl, data);
1417: if (status == HT_WOULD_BLOCK) return HT_OK;
1418: ctrl->state = FTP_NEED_DATA;
1419: break;
1420:
1421: case FTP_SUCCESS:
1422: if (HTRequest_isPostWeb(request)) {
1423: BOOL main = HTRequest_isMainDestination(request);
1424: if (HTRequest_isDestination(request)) {
1425: HTLink *link =
1426: HTAnchor_findLink((HTAnchor *) request->source->anchor,
1427: (HTAnchor *) request->anchor);
1.72 frystyk 1428: HTLink_setResult(link, HT_LINK_OK);
1.23 frystyk 1429: }
1.60 frystyk 1430: HTRequest_removeDestination(request);
1431: FTPCleanup(request, main ? HT_LOADED : HT_IGNORE);
1432: } else
1433: FTPCleanup(request, HT_LOADED);
1434: return HT_OK;
1435: break;
1436:
1437: case FTP_ERROR:
1438: /* Clean up the other connections or just this one */
1439: if (HTRequest_isPostWeb(request)) {
1440: BOOL main = HTRequest_isMainDestination(request);
1441: HTRequest_killPostWeb(request);
1442: if (HTRequest_isDestination(request)) {
1443: HTLink *link =
1444: HTAnchor_findLink((HTAnchor *) request->source->anchor,
1445: (HTAnchor *) request->anchor);
1.72 frystyk 1446: HTLink_setResult(link, HT_LINK_ERROR);
1.30 luotonen 1447: }
1.60 frystyk 1448: HTRequest_removeDestination(request);
1449: FTPCleanup(request, main ? HT_ERROR : HT_IGNORE);
1450: } else
1451: FTPCleanup(request, HT_ERROR);
1452: return HT_OK;
1453: break;
1.23 frystyk 1454: }
1.60 frystyk 1455: } /* End of while(1) */
1.23 frystyk 1456: }
1.22 frystyk 1457:
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