Annotation of libwww/Library/src/HTFTP.c, revision 1.84
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.
1.84 ! frystyk 6: ** @(#) $Id: HTFTP.c,v 1.83 1996/05/20 15:06:37 frystyk Exp $
1.1 timbl 7: **
8: ** A cache of control connections is kept.
9: **
10: ** Note: Port allocation
11: **
12: ** It is essential that the port is allocated by the system, rather
1.79 frystyk 13: ** than chosen in rotation by us (FTP_POLL_PORTS), or the following
1.1 timbl 14: ** problem occurs.
15: **
16: ** It seems that an attempt by the server to connect to a port which has
17: ** been used recently by a listen on the same socket, or by another
18: ** socket this or another process causes a hangup of (almost exactly)
19: ** one minute. Therefore, we have to use a rotating port number.
20: ** The problem remains that if the application is run twice in quick
21: ** succession, it will hang for what remains of a minute.
22: **
23: ** Authors
1.54 frystyk 24: ** TBL Tim Berners-lee <timbl@w3.org>
1.1 timbl 25: ** DD Denis DeLaRoca 310 825-4580 <CSP1DWD@mvs.oac.ucla.edu>
1.22 frystyk 26: ** LM Lou Montulli <montulli@ukanaix.cc.ukans.edu>
27: ** FM Foteos Macrides <macrides@sci.wfeb.edu>
1.54 frystyk 28: ** HF Henrik Frystyk <frystyk@w3.org>
1.30 luotonen 29: ** AL Ari Luotonen <luotonen@www.cern.ch>
1.23 frystyk 30: **
1.1 timbl 31: ** History:
32: ** 2 May 91 Written TBL, as a part of the WorldWideWeb project.
33: ** 15 Jan 92 Bug fix: close() was used for NETCLOSE for control soc
34: ** 10 Feb 92 Retry if cached connection times out or breaks
35: ** 8 Dec 92 Bug fix 921208 TBL after DD
36: ** 17 Dec 92 Anon FTP password now just WWWuser@ suggested by DD
1.2 timbl 37: ** fails on princeton.edu!
1.22 frystyk 38: ** 27 Dec 93 (FM) Fixed up so FTP now works with VMS hosts. Path
39: ** must be Unix-style and cannot include the device
40: ** or top directory.
41: ** ?? ??? ?? (LM) Added code to prompt and send passwords for non
42: ** anonymous FTP
43: ** 25 Mar 94 (LM) Added code to recognize different ftp server types
44: ** and code to parse dates and sizes on most hosts.
45: ** 27 Mar 93 (FM) Added code for getting dates and sizes on VMS hosts.
1.23 frystyk 46: ** 27 Apr 94 (HF) The module is basically rewritten to conform with
47: ** rfc 959, 1123 and 1579 and turned into a state
48: ** machine. New semantics of ftp URLs are supported.
1.30 luotonen 49: ** 2 May 94 (AL) Fixed possible security hole when the URL contains
50: ** a newline, that could cause multiple commands to be
51: ** sent to an FTP server.
1.60 frystyk 52: ** Sep 95 HFN Rewritten to support streams and persistent conenctions
53: ** and multiplexed IO
1.22 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) {
1.84 ! frystyk 168: HTNet * cnet = HTRequest_net(request);
! 169: ftp_ctrl * ctrl = (ftp_ctrl *) HTNet_context(cnet);
! 170: HTStream * input = HTRequest_inputStream(request);
1.75 frystyk 171:
172: /* Free stream with data TO network */
1.84 ! frystyk 173: if (!HTRequest_isDestination(request) && input) {
1.75 frystyk 174: if (status == HT_INTERRUPTED)
1.84 ! frystyk 175: (*input->isa->abort)(input, NULL);
1.75 frystyk 176: else
1.84 ! frystyk 177: (*input->isa->_free)(input);
1.75 frystyk 178: }
179:
180: /* Remove the request object and our own context structure for http */
1.84 ! frystyk 181: if (cnet && ctrl) {
1.75 frystyk 182: HTNet * dnet = ctrl->dnet;
1.84 ! frystyk 183: ftp_data * data = (ftp_data *) HTNet_context(dnet);
1.75 frystyk 184: HTChunk_delete(ctrl->cmd);
1.77 frystyk 185: HT_FREE(ctrl->reply);
186: HT_FREE(ctrl->uid);
187: HT_FREE(ctrl->passwd);
188: HT_FREE(ctrl->account);
189: HT_FREE(ctrl);
1.84 ! frystyk 190: if (dnet && data) {
1.77 frystyk 191: HT_FREE(data->file);
192: HT_FREE(data);
1.75 frystyk 193: }
1.81 frystyk 194: HTNet_setPersistent(dnet, NO);
1.75 frystyk 195: HTNet_delete(dnet, HT_IGNORE);
196: }
197: HTNet_delete(cnet, status);
198: return YES;
1.60 frystyk 199: }
1.75 frystyk 200: return NO;
1.60 frystyk 201: }
202:
203: /* ScanResponse
204: ** ------------
205: ** Analyzes the response from the FTP server.
206: ** Returns HT_LOADED if OK, HT_OK if more, HT_ERROR if error
207: ** the control connection.
1.33 frystyk 208: */
1.65 frystyk 209: PRIVATE int ScanResponse (HTStream * me)
1.33 frystyk 210: {
1.60 frystyk 211: int reply = 0;
212: char cont = '\0';
213: char *ptr = me->buffer+4;
214: *(me->buffer+me->buflen) = '\0';
215: if (isdigit(*(me->buffer))) sscanf(me->buffer, "%d%c", &reply, &cont);
216: if (me->first_line) {
1.78 eric 217: if (PROT_TRACE) HTTrace("FTP Rx...... `%s\'\n", me->buffer);
1.60 frystyk 218: if (!reply) return HT_ERROR;
219: me->first_line = NO;
220: me->ctrl->repcode = reply;
221: StrAllocCopy(me->ctrl->reply, ptr);
222: } else {
1.73 frystyk 223: HTChunk_puts(me->welcome, ptr);
224: HTChunk_putc(me->welcome, '\n');
1.33 frystyk 225: }
1.60 frystyk 226: me->buflen = 0;
1.68 frystyk 227: me->state = EOL_BEGIN;
1.60 frystyk 228: if (cont != '-') {
229: me->first_line = YES;
230: return HT_LOADED;
1.33 frystyk 231: }
1.60 frystyk 232: return HT_OK;
1.33 frystyk 233: }
234:
1.60 frystyk 235: /*
236: ** Searches for FTP header line until buffer fills up or a CRLF or LF
237: ** is found
1.23 frystyk 238: */
1.79 frystyk 239: PRIVATE int FTPStatus_put_block (HTStream * me, const char * b, int l)
1.60 frystyk 240: {
241: int status;
242: while (l-- > 0) {
243: if (me->state == EOL_FCR) {
244: if (*b == LF) {
1.62 frystyk 245: if (!me->junk) {
246: if ((status = ScanResponse(me)) != HT_OK)
247: return status;
248: } else {
249: me->buflen = 0;
250: me->junk = NO;
251: }
1.60 frystyk 252: }
253: } else if (*b == CR) {
254: me->state = EOL_FCR;
255: } else if (*b == LF) {
1.62 frystyk 256: if (!me->junk) {
257: if ((status = ScanResponse(me)) != HT_OK)
258: return status;
259: } else {
260: me->buflen = 0;
261: me->junk = NO;
262: }
1.60 frystyk 263: } else {
264: *(me->buffer+me->buflen++) = *b;
1.63 frystyk 265: if (me->buflen >= MAX_FTP_LINE) {
1.60 frystyk 266: if (PROT_TRACE)
1.78 eric 267: HTTrace("FTP Status.. Line too long - chopped\n");
1.62 frystyk 268: me->junk = YES;
269: if ((status = ScanResponse(me)) != HT_OK) {
270: me->junk = NO;
271: return status;
272: }
1.23 frystyk 273: }
274: }
1.60 frystyk 275: b++;
1.25 frystyk 276: }
1.60 frystyk 277: return HT_OK;
1.25 frystyk 278: }
279:
1.79 frystyk 280: PRIVATE int FTPStatus_put_string (HTStream * me, const char * s)
1.60 frystyk 281: {
282: return FTPStatus_put_block(me, s, (int) strlen(s));
283: }
1.25 frystyk 284:
1.65 frystyk 285: PRIVATE int FTPStatus_put_character (HTStream * me, char c)
1.25 frystyk 286: {
1.60 frystyk 287: return FTPStatus_put_block(me, &c, 1);
288: }
1.25 frystyk 289:
1.65 frystyk 290: PRIVATE int FTPStatus_flush (HTStream * me)
1.60 frystyk 291: {
292: return (*me->target->isa->flush)(me->target);
1.23 frystyk 293: }
1.22 frystyk 294:
1.65 frystyk 295: PRIVATE int FTPStatus_free (HTStream * me)
1.22 frystyk 296: {
1.60 frystyk 297: int status = HT_OK;
298: if (me->target) {
299: if ((status = (*me->target->isa->_free)(me->target)) == HT_WOULD_BLOCK)
300: return HT_WOULD_BLOCK;
1.22 frystyk 301: }
1.73 frystyk 302: HTChunk_delete(me->welcome);
1.77 frystyk 303: HT_FREE(me);
1.60 frystyk 304: return HT_OK;
1.22 frystyk 305: }
306:
1.68 frystyk 307: PRIVATE int FTPStatus_abort (HTStream * me, HTList * e)
1.22 frystyk 308: {
1.60 frystyk 309: if (me->target)
310: (*me->target->isa->abort)(me->target, e);
1.73 frystyk 311: HTChunk_delete(me->welcome);
1.77 frystyk 312: HT_FREE(me);
1.60 frystyk 313: if (PROT_TRACE)
1.78 eric 314: HTTrace("FTPStatus... ABORTING...\n");
1.60 frystyk 315: return HT_ERROR;
1.22 frystyk 316: }
317:
1.60 frystyk 318: /* FTPStatus Stream
319: ** -----------------
1.22 frystyk 320: */
1.79 frystyk 321: PRIVATE const HTStreamClass FTPStatusClass =
1.60 frystyk 322: {
323: "FTPStatus",
324: FTPStatus_flush,
325: FTPStatus_free,
326: FTPStatus_abort,
327: FTPStatus_put_character,
328: FTPStatus_put_string,
329: FTPStatus_put_block
330: };
331:
1.65 frystyk 332: PRIVATE HTStream * FTPStatus_new (HTRequest * request, ftp_ctrl * ctrl)
1.60 frystyk 333: {
1.77 frystyk 334: HTStream * me;
335: if ((me = (HTStream *) HT_CALLOC(1, sizeof(HTStream))) == NULL)
336: HT_OUTOFMEM("FTPStatus_new");
1.60 frystyk 337: me->isa = &FTPStatusClass;
338: me->request = request;
339: me->first_line = YES;
1.73 frystyk 340: me->welcome = HTChunk_new(256);
1.60 frystyk 341: me->ctrl = ctrl;
342: me->state = EOL_BEGIN;
343: return me;
1.22 frystyk 344: }
345:
1.60 frystyk 346: /* ------------------------------------------------------------------------- */
347: /* FTP Client Functions for managing control and data connections */
348: /* ------------------------------------------------------------------------- */
1.22 frystyk 349:
1.60 frystyk 350: PRIVATE int SendCommand (HTRequest *request, ftp_ctrl *ctrl,
351: char *token, char *pars)
352: {
353: int len = strlen(token) + (pars ? strlen(pars)+1:0) + 2;
1.84 ! frystyk 354: HTStream * input = HTRequest_inputStream(request);
1.73 frystyk 355: HTChunk_clear(ctrl->cmd);
356: HTChunk_ensure(ctrl->cmd, len);
1.60 frystyk 357: if (pars && *pars)
1.73 frystyk 358: sprintf(HTChunk_data(ctrl->cmd), "%s %s%c%c", token, pars, CR, LF);
1.60 frystyk 359: else
1.73 frystyk 360: sprintf(HTChunk_data(ctrl->cmd), "%s%c%c", token, CR, LF);
1.78 eric 361: if (PROT_TRACE) HTTrace("FTP Tx...... %s", HTChunk_data(ctrl->cmd));
1.84 ! frystyk 362: return (*input->isa->put_block)(input, HTChunk_data(ctrl->cmd), len);
1.60 frystyk 363: }
364:
365: /* HTFTPParseURL
366: ** -------------
367: ** Scan URL for uid and passwd, and any data type indication. The
368: ** expected format is [user[:password]@]host[:port].
369: ** If no values are found then use defaults.
370: ** Returns YES if OK, else NO
1.22 frystyk 371: */
1.83 frystyk 372: PRIVATE BOOL HTFTPParseURL (HTRequest * request,
373: char *url, ftp_ctrl *ctrl, ftp_data *data)
1.22 frystyk 374: {
1.60 frystyk 375: char *login = HTParse(url, "", PARSE_HOST);
376: char *path = HTParse(url, "", PARSE_PATH+PARSE_PUNCTUATION);
377: char *ptr = strchr(login, '@');
378: if (ptr) { /* Uid and/or passwd specified */
379: char *passwd;
380: *ptr = '\0';
381: if ((passwd = strchr(login, ':'))) { /* Passwd specified */
382: *passwd++ = '\0';
383: HTUnEscape(passwd);
384: StrAllocCopy(ctrl->passwd, passwd);
1.22 frystyk 385: }
1.60 frystyk 386: HTUnEscape(login);
387: StrAllocCopy(ctrl->uid, login);
388: } else { /* Use anonymous */
1.83 frystyk 389: HTUserProfile * up = HTRequest_userProfile(request);
390: const char * mailaddress = HTUserProfile_email(up);
1.60 frystyk 391: StrAllocCopy(ctrl->uid, "anonymous");
392: if (mailaddress)
393: StrAllocCopy(ctrl->passwd, mailaddress);
394: else
395: StrAllocCopy(ctrl->passwd, WWW_FTP_CLIENT);
1.22 frystyk 396: }
1.66 frystyk 397: if (PROT_TRACE)
1.78 eric 398: HTTrace("FTPParse.... uid `%s\' pw `%s\'\n",
1.66 frystyk 399: ctrl->uid ? ctrl->uid : "<null>",
400: ctrl->passwd ? ctrl->passwd : "<null>");
1.60 frystyk 401:
402: ptr = strchr(path, ';');
403: if (ptr) {
404: *ptr = '\0';
405: if (strncasecomp(ptr, ";type=", 6)) /* Look for type */
406: data->type = TOUPPER(*(ptr+6));
407: else if (*(ptr-1) == '/')
408: data->type = 'N';
409: } else if (*(path+strlen(path)-1) == '/') {
410: *(path+strlen(path)-1) = '\0';
411: data->type = 'N';
412: }
413: if (data->type && PROT_TRACE)
1.78 eric 414: HTTrace("FTPParse.... Datatype %c\n", data->type);
1.60 frystyk 415: StrAllocCopy(data->file, path);
416: data->offset = data->file;
1.77 frystyk 417: HT_FREE(login);
418: HT_FREE(path);
1.60 frystyk 419: return YES;
1.22 frystyk 420: }
421:
1.60 frystyk 422: /* Use LIST or NLST
423: ** ----------------
424: ** This function sets the type field for what type of list we can use
425: ** Returns YES if OK, else NO
426: */
1.63 frystyk 427: PRIVATE BOOL FTPListType (ftp_data * data, FTPServerType type)
1.60 frystyk 428: {
429: if (!data) return NO;
430: switch (type) {
431: case FTP_GENERIC: data->type='N'; break;
432: case FTP_MACHTEN: data->type='L'; break;
433: case FTP_UNIX: data->type='L'; break;
434: case FTP_VMS: data->type='L'; break;
435: case FTP_CMS: data->type='N'; break;
436: case FTP_DCTS: data->type='N'; break;
437: case FTP_TCPC: data->type='N'; break;
438: case FTP_PETER_LEWIS: data->type='L'; break;
439: case FTP_NCSA: data->type='N'; break;
440: case FTP_WINNT: data->type='L'; break;
441: default: data->type='N'; break;
442: }
443: return YES;
444: }
445:
446: /* Open a Data socket for listening on
447: ** -----------------------------------
448: ** Set up a port to listen for data
449: ** Returns YES if OK, else NO
1.22 frystyk 450: */
1.60 frystyk 451: PRIVATE BOOL ListenSocket (HTNet *cnet, HTNet *dnet, ftp_data *data)
1.22 frystyk 452: {
1.79 frystyk 453: #ifdef FTP_POLL_PORTS
1.60 frystyk 454: unsigned short old_DataPort = DataPort;
455: for (DataPort=old_DataPort+1;; DataPort++) {
456: if (DataPort > LAST_TCP_PORT)
457: DataPort = FIRST_TCP_PORT;
458: if (DataPort == old_DataPort) {
1.78 eric 459: if(PROT_TRACE) HTTrace("FTP......... No data port found\n");
1.60 frystyk 460: return NO;
461: }
1.71 frystyk 462: if (HTDoListen(dnet, DataPort, 1) == HT_OK)
1.60 frystyk 463: break;
464: if (dnet->sockfd != INVSOC) {
465: NETCLOSE(dnet->sockfd);
466: dnet->sockfd = INVSOC:
467: }
1.22 frystyk 468: }
1.60 frystyk 469: #else
1.71 frystyk 470: if (HTDoListen(dnet, 0, cnet->sockfd, 1) != HT_OK) return NO;
1.79 frystyk 471: #endif /* FTP_POLL_PORTS */
1.22 frystyk 472:
1.60 frystyk 473: /* Now we must find out who we are to tell the other guy */
474: {
475: SockA local_addr;
476: int addr_size = sizeof(local_addr);
477: memset((void *) &local_addr, '\0', sizeof(local_addr));
478: if (getsockname(dnet->sockfd, (struct sockaddr *) &local_addr,
479: &addr_size) < 0) {
1.68 frystyk 480: HTRequest_addSystemError(dnet->request, ERR_FATAL, socerrno,
481: NO, "getsockname");
1.60 frystyk 482: return NO;
1.22 frystyk 483: }
1.78 eric 484: if (PROT_TRACE) HTTrace("FTP......... This host is `%s\'\n",
1.60 frystyk 485: HTInetString(&local_addr));
486: {
487: u_long addr = local_addr.sin_addr.s_addr;
488: u_short port = local_addr.sin_port;
489: sprintf(data->host, "%d,%d,%d,%d,%d,%d",
490: (int)*((unsigned char *)(&addr)+0),
491: (int)*((unsigned char *)(&addr)+1),
492: (int)*((unsigned char *)(&addr)+2),
493: (int)*((unsigned char *)(&addr)+3),
494: (int)*((unsigned char *)(&port)+0),
495: (int)*((unsigned char *)(&port)+1));
1.22 frystyk 496: }
497: }
1.60 frystyk 498: return YES;
1.22 frystyk 499: }
500:
1.60 frystyk 501: /* HTFTPLogin
502: ** -----------
503: ** This function makes a login to a ftp-server. It takes the user name
504: ** and passwd specified in ctrl->user and if that fails or an additional
505: ** account is needed, the user is prompted.
506: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.22 frystyk 507: */
1.60 frystyk 508: PRIVATE int HTFTPLogin (HTRequest *request, HTNet *cnet, ftp_ctrl *ctrl)
1.22 frystyk 509: {
1.60 frystyk 510: int status;
511: typedef enum _state {
512: SUB_ERROR = -2,
513: SUB_SUCCESS = -1,
514: NEED_SELECT = 0,
515: NEED_GREETING,
516: NEED_REIN,
517: NEED_UID,
518: NEED_PASSWD,
519: NEED_ACCOUNT,
520: PROMPT_USER
521: } state;
522:
523: /* Jump into a second level state machine */
524: while (1) {
525: switch ((state) ctrl->substate) {
526: case NEED_SELECT:
527: ctrl->substate = ctrl->reset ? NEED_REIN : NEED_GREETING;
528: break;
529:
530: case NEED_GREETING:
1.81 frystyk 531: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 532: if (status == HT_WOULD_BLOCK)
533: return HT_WOULD_BLOCK;
534: else if (status == HT_LOADED) {
1.66 frystyk 535: if (ctrl->repcode/100 == 2) {
536: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
537: NEED_UID : PROMPT_USER;
538: } else
1.60 frystyk 539: ctrl->substate = SUB_ERROR;
540: } else
541: ctrl->substate = SUB_ERROR;
542: break;
543:
544: case NEED_REIN:
545: if (!ctrl->sent) {
546: status = SendCommand(request, ctrl, "REIN", NULL);
547: if (status == HT_WOULD_BLOCK)
548: return HT_WOULD_BLOCK;
549: else if (status == HT_ERROR)
550: ctrl->substate = SUB_ERROR;
551: ctrl->sent = YES;
552: } else {
1.81 frystyk 553: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 554: if (status == HT_WOULD_BLOCK)
555: return HT_WOULD_BLOCK;
556: else if (status == HT_LOADED) {
1.66 frystyk 557: if (ctrl->repcode/100 == 2) {
558: ctrl->substate = (ctrl->uid && *ctrl->uid) ?
559: NEED_UID : PROMPT_USER;
560: } else
1.60 frystyk 561: ctrl->substate = SUB_SUCCESS; /* hope the best */
562: } else
563: ctrl->substate = SUB_ERROR;
564: ctrl->sent = NO;
1.22 frystyk 565: }
1.60 frystyk 566: break;
567:
568: case NEED_UID:
569: if (!ctrl->sent) {
570: status = SendCommand(request, ctrl, "USER", ctrl->uid);
571: if (status == HT_WOULD_BLOCK)
572: return HT_WOULD_BLOCK;
573: else if (status == HT_ERROR)
574: ctrl->substate = SUB_ERROR;
575: ctrl->sent = YES;
1.22 frystyk 576: } else {
1.81 frystyk 577: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 578: if (status == HT_WOULD_BLOCK)
579: return HT_WOULD_BLOCK;
580: else if (status == HT_LOADED) {
581: int code = ctrl->repcode/100;
582: if (code == 2) /* Logged in w/o passwd! */
583: ctrl->substate = SUB_SUCCESS;
1.66 frystyk 584: else if (code == 3) { /* Password demanded */
585: ctrl->substate = (ctrl->passwd && *ctrl->passwd) ?
586: NEED_PASSWD : PROMPT_USER;
587: } else if (ctrl->repcode == 530)
1.60 frystyk 588: ctrl->substate = PROMPT_USER; /* User unknown */
589: else
590: ctrl->substate = SUB_ERROR;
591: } else
592: ctrl->substate = SUB_ERROR;
593: ctrl->sent = NO;
1.22 frystyk 594: }
1.60 frystyk 595: break;
1.1 timbl 596:
1.60 frystyk 597: case NEED_PASSWD:
598: if (!ctrl->sent) {
599: status = SendCommand(request, ctrl, "PASS", ctrl->passwd);
600: if (status == HT_WOULD_BLOCK)
601: return HT_WOULD_BLOCK;
602: else if (status == HT_ERROR)
603: ctrl->substate = SUB_ERROR;
604: ctrl->sent = YES;
605: } else {
1.81 frystyk 606: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 607: if (status == HT_WOULD_BLOCK)
608: return HT_WOULD_BLOCK;
609: else if (status == HT_LOADED) {
610: int code = ctrl->repcode/100;
611: if (code == 2) /* Logged in with passwd */
612: ctrl->substate = SUB_SUCCESS;
1.70 frystyk 613: else if (code == 3) { /* Account required */
614: HTAlertCallback *cbf = HTAlert_find(HT_A_PROMPT);
615: HTAlertPar * reply = HTAlert_newReply();
616: if (cbf && (*cbf)(request, HT_A_PROMPT,
617: HT_MSG_ACCOUNT, NULL, NULL, reply)) {
618: ctrl->account = HTAlert_replyMessage(reply);
1.60 frystyk 619: ctrl->substate = NEED_ACCOUNT;
1.70 frystyk 620: } else
1.60 frystyk 621: ctrl->substate = SUB_ERROR;
1.70 frystyk 622: HTAlert_deleteReply(reply);
1.60 frystyk 623: } else if (ctrl->repcode == 530)
624: ctrl->substate = PROMPT_USER;
625: else
626: ctrl->substate = SUB_ERROR;
627: } else
628: ctrl->substate = SUB_ERROR;
629: ctrl->sent = NO;
630: }
631: break;
1.1 timbl 632:
1.60 frystyk 633: case NEED_ACCOUNT:
634: if (!ctrl->sent) {
635: status = SendCommand(request, ctrl, "ACCT", ctrl->account);
636: if (status == HT_WOULD_BLOCK)
637: return HT_WOULD_BLOCK;
638: else if (status == HT_ERROR)
639: ctrl->substate = SUB_ERROR;
640: ctrl->sent = YES;
1.23 frystyk 641: } else {
1.81 frystyk 642: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 643: if (status == HT_WOULD_BLOCK)
644: return HT_WOULD_BLOCK;
645: else if (status == HT_LOADED) {
646: int code = ctrl->repcode/100;
647: if (code == 2) /* Logged in with account */
648: ctrl->substate = SUB_SUCCESS;
649: else
650: ctrl->substate = SUB_ERROR; /* hopeless */
651: } else
652: ctrl->substate = SUB_ERROR;
653: ctrl->sent = NO;
1.1 timbl 654: }
1.60 frystyk 655: break;
1.1 timbl 656:
1.60 frystyk 657: case PROMPT_USER:
658: {
1.70 frystyk 659: HTAlertCallback *cbf = HTAlert_find(HT_A_USER_PW);
660: HTAlertPar * reply = HTAlert_newReply();
1.77 frystyk 661: HT_FREE(ctrl->uid);
662: HT_FREE(ctrl->passwd);
1.70 frystyk 663: if (cbf &&
664: (*cbf)(request, HT_A_USER_PW,HT_MSG_NULL,NULL,NULL,reply)){
665: ctrl->uid = HTAlert_replyMessage(reply);
666: ctrl->passwd = HTAlert_replySecret(reply);
667: }
668: HTAlert_deleteReply(reply);
1.66 frystyk 669: if (ctrl->uid && *ctrl->uid && ctrl->passwd && *ctrl->passwd)
1.60 frystyk 670: ctrl->substate = NEED_UID;
671: else
672: ctrl->substate = SUB_ERROR;
673: }
674: break;
1.1 timbl 675:
1.60 frystyk 676: case SUB_ERROR:
677: if (PROT_TRACE)
1.78 eric 678: HTTrace("FTP......... Login failed\n");
1.60 frystyk 679: ctrl->substate = 0;
680: return HT_ERROR;
681: break;
1.23 frystyk 682:
1.60 frystyk 683: case SUB_SUCCESS:
1.43 frystyk 684: if (PROT_TRACE)
1.78 eric 685: HTTrace("FTP......... Logged in as `%s\'\n", ctrl->uid);
1.60 frystyk 686: ctrl->substate = 0;
687: return HT_OK;
688: break;
1.23 frystyk 689: }
1.22 frystyk 690: }
691: }
692:
1.60 frystyk 693: /* HTFTPDataConnection
694: ** -------------------
695: ** Prepares a data connection to the server and initializes the
696: ** transfer mode.
697: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
1.1 timbl 698: */
1.60 frystyk 699: PRIVATE int HTFTPDataConnection (HTRequest * request, HTNet *cnet,
700: ftp_ctrl *ctrl, ftp_data *data)
1.1 timbl 701: {
1.60 frystyk 702: int status;
703: HTNet *dnet = ctrl->dnet;
704: typedef enum _state {
705: SUB_ERROR = -2,
706: SUB_SUCCESS = -1,
707: NEED_TYPE = 0,
708: NEED_SELECT,
709: NEED_PASV,
710: NEED_PORT
711: } state;
712:
713: /* Jump into a second level state machine */
714: while (1) {
715: switch ((state) ctrl->substate) {
716: case NEED_TYPE:
717: if(!data->type|| data->pasv || data->type=='N' || data->type=='L'){
718: ctrl->substate = NEED_SELECT;
719: break;
720: }
721: if (!ctrl->sent) {
722: char type[2];
723: *type = data->type;
724: *(type+1) = '\0';
725: status = SendCommand(request, ctrl, "TYPE", type);
726: if (status == HT_WOULD_BLOCK)
727: return HT_WOULD_BLOCK;
728: else if (status == HT_ERROR)
729: ctrl->substate = SUB_ERROR;
730: ctrl->sent = YES;
731: } else {
1.81 frystyk 732: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 733: if (status == HT_WOULD_BLOCK)
734: return HT_WOULD_BLOCK;
735: else if (status == HT_LOADED) {
736: if (ctrl->repcode/100 == 2)
737: ctrl->substate = NEED_SELECT;
738: else
739: ctrl->substate = SUB_ERROR;
740: } else
741: ctrl->substate = SUB_ERROR;
742: ctrl->sent = NO;
743: }
744: break;
745:
746: case NEED_SELECT:
747: if (FTPMode & FTP_DATA_PASV && !data->pasv)
748: ctrl->substate = NEED_PASV;
749: else if (ListenSocket(cnet, dnet, data))
750: ctrl->substate = NEED_PORT;
751: else
752: ctrl->substate = SUB_ERROR;
753: break;
754:
755: case NEED_PASV:
756: if (!ctrl->sent) {
757: status = SendCommand(request, ctrl, "PASV", NULL);
758: if (status == HT_WOULD_BLOCK)
759: return HT_WOULD_BLOCK;
760: else if (status == HT_ERROR)
761: ctrl->substate = SUB_ERROR;
762: ctrl->sent = YES;
763: } else {
1.81 frystyk 764: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 765: if (status == HT_WOULD_BLOCK)
766: return HT_WOULD_BLOCK;
767: else if (status == HT_LOADED) {
768: if (ctrl->repcode == 227) {
769: /*
770: ** If succes, we have to scan for the returned number.
771: ** As the format for the response isn't standard,
772: ** the best thing to do is to scan for the first digit
773: ** after the status code, see RFC1123
774: */
775: char *host = ctrl->reply;
776: int h0, h1, h2, h3, p0=0, p1=0;
777: while (*host && !isdigit(*host++));
778: if (!*host || sscanf(--host, "%d,%d,%d,%d,%d,%d",
779: &h0,&h1,&h2,&h3,&p0,&p1) < 6) {
780: if (PROT_TRACE)
1.78 eric 781: HTTrace("FTP......... PASV No addr\n");
1.60 frystyk 782: ctrl->substate = SUB_ERROR;
783: break;
784: } else {
785: int port = (p0<<8)+p1;
786: sprintf(data->host, "ftp://%d.%d.%d.%d:%d/",
787: h0, h1, h2, h3, port);
788: data->pasv = YES;
789: ctrl->substate = SUB_SUCCESS;
790: }
791: } else {
792: ctrl->substate = ListenSocket(cnet, dnet, data) ?
793: NEED_PORT : SUB_ERROR;
794: }
795: } else
796: ctrl->substate = SUB_ERROR;
797: ctrl->sent = NO;
798: }
799: break;
1.22 frystyk 800:
1.60 frystyk 801: case NEED_PORT:
802: if (!ctrl->sent) {
803: status = SendCommand(request, ctrl, "PORT", data->host);
804: if (status == HT_WOULD_BLOCK)
805: return HT_WOULD_BLOCK;
806: else if (status == HT_ERROR)
807: ctrl->substate = SUB_ERROR;
808: ctrl->sent = YES;
809: } else {
1.81 frystyk 810: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 811: if (status == HT_WOULD_BLOCK)
812: return HT_WOULD_BLOCK;
813: else if (status == HT_LOADED) {
814: data->pasv = NO;
815: ctrl->substate = (ctrl->repcode/100 == 2) ?
816: SUB_SUCCESS : SUB_ERROR;
817: } else
818: ctrl->substate = SUB_ERROR;
819: ctrl->sent = NO;
820: }
821: break;
1.1 timbl 822:
1.60 frystyk 823: case SUB_ERROR:
824: if (PROT_TRACE)
1.78 eric 825: HTTrace("FTP......... Can't setup data connection\n");
1.60 frystyk 826: ctrl->substate = 0;
827: return HT_ERROR;
828: break;
1.1 timbl 829:
1.60 frystyk 830: case SUB_SUCCESS:
831: if (PROT_TRACE)
1.78 eric 832: HTTrace("FTP......... Data connection negotiated\n");
1.60 frystyk 833: ctrl->substate = 0;
834: return HT_OK;
835: break;
1.23 frystyk 836: }
1.58 frystyk 837: }
1.23 frystyk 838: }
1.1 timbl 839:
840:
1.60 frystyk 841: /* HTFTPServerInfo
842: ** ---------------
843: ** This function finds out what server we are talking to.
844: ** Maybe we can upgrade from NLST to LIST.
845: ** Returns HT_OK, HT_ERROR, or HT_WOULD_BLOCK
846: ** Thanks to James.W.Matthews@Dartmouth.EDU (James W. Matthews) for making
847: ** his code available.
1.1 timbl 848: */
1.60 frystyk 849: PRIVATE int HTFTPServerInfo (HTRequest *request, HTNet *cnet,
850: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 851: {
1.60 frystyk 852: int status;
853: typedef enum _state {
854: SUB_ERROR = -2,
855: SUB_SUCCESS = -1,
856: NEED_SYST = 0,
857: CHECK_SYST,
858: NEED_PWD,
859: CHECK_PWD
860: } state;
861:
862: /* Jump into a second level state machine */
863: while (1) {
864: switch ((state) ctrl->substate) {
865: case NEED_SYST:
866: if (!ctrl->sent) {
1.63 frystyk 867: if (ctrl->server != FTP_UNSURE) {
1.60 frystyk 868: FTPListType(data, ctrl->server);
869: return HT_OK;
870: }
871: status = SendCommand(request, ctrl, "SYST", NULL);
872: if (status == HT_WOULD_BLOCK)
873: return HT_WOULD_BLOCK;
874: else if (status == HT_ERROR)
875: ctrl->substate = SUB_ERROR;
876: ctrl->sent = YES;
877: } else {
1.81 frystyk 878: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 879: if (status == HT_WOULD_BLOCK)
880: return HT_WOULD_BLOCK;
881: else if (status == HT_LOADED) {
882: ctrl->substate=ctrl->repcode==215 ? CHECK_SYST : NEED_PWD;
883: } else
884: ctrl->substate = SUB_ERROR;
885: ctrl->sent = NO;
1.23 frystyk 886: }
887: break;
888:
1.60 frystyk 889: case CHECK_SYST:
1.23 frystyk 890: {
1.60 frystyk 891: char *reply = ctrl->reply;
892: if (!*reply) {
1.43 frystyk 893: if (PROT_TRACE)
1.78 eric 894: HTTrace("FTP......... No server info?\n");
1.60 frystyk 895: ctrl->substate = NEED_PWD;
1.23 frystyk 896: break;
897: }
1.60 frystyk 898: if (strncmp(reply, "UNIX Type: L8MAC-OSMachTen", 28) == 0) {
899: ctrl->server = FTP_MACHTEN;
900: } else if (strstr(reply, "UNIX") != NULL) {
901: ctrl->server = FTP_UNIX;
902: } else if (strncmp(reply, "VMS", 3) == 0) {
903: ctrl->server = FTP_VMS;
904: } else if ((strncmp(reply, "VM/CMS", 6) == 0) ||
905: (strncmp(reply, "VM", 2) == 0)) {
906: ctrl->server = FTP_CMS;
907: } else if (strncmp(reply, "DCTS", 4) == 0) {
908: ctrl->server = FTP_DCTS;
909: } else if (strstr(reply, "MAC-OS TCP/ConnectII") != NULL) {
1.23 frystyk 910: /* Check old versions of TCP/C using / in pathnames */
1.63 frystyk 911: ctrl->server = FTP_TCPC + FTP_UNSURE;
1.60 frystyk 912: } else if (strncmp(reply, "MACOS Peter's Server", 20) == 0) {
913: ctrl->server = FTP_PETER_LEWIS;
914: } else if (strncmp(reply, "Windows_NT", 10) == 0) {
915: ctrl->server = FTP_WINNT;
1.23 frystyk 916: }
917:
918: /* If we are unsure, try PWD to get more information */
1.60 frystyk 919: if (ctrl->server & FTP_UNSURE)
920: ctrl->substate = NEED_PWD;
1.23 frystyk 921: else
1.60 frystyk 922: ctrl->substate = SUB_SUCCESS;
1.1 timbl 923: }
1.23 frystyk 924: break;
925:
926: case NEED_PWD:
1.60 frystyk 927: if (!ctrl->sent) {
928: status = SendCommand(request, ctrl, "PWD", NULL);
929: if (status == HT_WOULD_BLOCK)
930: return HT_WOULD_BLOCK;
931: else if (status == HT_ERROR)
932: ctrl->substate = SUB_ERROR;
933: ctrl->sent = YES;
1.23 frystyk 934: } else {
1.81 frystyk 935: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 936: if (status == HT_WOULD_BLOCK)
937: return HT_WOULD_BLOCK;
938: else if (status == HT_LOADED) {
939: ctrl->substate = (ctrl->repcode/100 == 2) ?
940: CHECK_PWD : SUB_ERROR;
941: } else
942: ctrl->substate = SUB_ERROR;
943: ctrl->sent = NO;
1.23 frystyk 944: }
945: break;
946:
1.60 frystyk 947: case CHECK_PWD:
948: {
949: char *start = strchr(ctrl->reply, '"');
950: char *end;
951: if (!start || (end = strchr(++start, '"')) == NULL) {
1.43 frystyk 952: if (PROT_TRACE)
1.78 eric 953: HTTrace("FTP......... No current directory?\n");
1.60 frystyk 954: ctrl->server = FTP_GENERIC;
1.23 frystyk 955: } else {
1.60 frystyk 956: *end = '\0';
1.63 frystyk 957: if (ctrl->server & FTP_TCPC) {
1.60 frystyk 958: ctrl->server = *start == '/' ? FTP_NCSA : FTP_TCPC;
959: } else if (*start == '/') {
960: /* path names starting with / imply Unix, right? */
961: ctrl->server = FTP_UNIX;
962: } else if (*(end-1) == ']') {
963: /* path names ending with ] imply VMS, right? */
964: ctrl->server = FTP_VMS;
965: } else
966: ctrl->server = FTP_GENERIC;
1.23 frystyk 967: }
1.60 frystyk 968: ctrl->substate = SUB_SUCCESS;
1.1 timbl 969: }
1.23 frystyk 970: break;
1.1 timbl 971:
1.60 frystyk 972: case SUB_ERROR:
973: if (PROT_TRACE)
1.78 eric 974: HTTrace("FTP......... Can't get server information\n");
1.60 frystyk 975: ctrl->substate = 0;
1.63 frystyk 976: ctrl->server = FTP_GENERIC;
1.60 frystyk 977: return HT_ERROR;
1.23 frystyk 978: break;
1.22 frystyk 979:
1.60 frystyk 980: case SUB_SUCCESS:
1.81 frystyk 981: {
982: HTHost * host = HTNet_host(cnet);
983: if (PROT_TRACE)
984: HTTrace("FTP Server.. Guessed type %d\n", ctrl->server);
985: HTHost_setVersion(host, ctrl->server);
986: FTPListType(data, ctrl->server);
987: ctrl->substate = 0;
988: return HT_OK;
989: break;
990: }
1.22 frystyk 991: }
1.23 frystyk 992: }
993: }
994:
1.60 frystyk 995: /* HTFTPGetData
996: ** ------------
997: ** This function asks for the file or a directory. First we try in one go,
1.23 frystyk 998: ** but if that doesn't work, then we use CWD for each segment and then
999: ** try to retrieve it. If that also fails, then we try if it is a
1.60 frystyk 1000: ** directory.
1001: ** Returns HT_OK, HT_LOADED, HT_ERROR, or HT_WOULD_BLOCK
1.23 frystyk 1002: */
1.71 frystyk 1003: PRIVATE int HTFTPGetData (HTRequest *request, HTNet *cnet, SOCKET sockfd,
1.60 frystyk 1004: ftp_ctrl *ctrl, ftp_data *data)
1.23 frystyk 1005: {
1006: int status;
1.60 frystyk 1007: char *segment = NULL;
1008: HTNet *dnet = ctrl->dnet;
1009: typedef enum _state {
1010: SUB_ERROR = -2,
1011: SUB_SUCCESS = -1,
1012: NEED_SELECT = 0,
1013: NEED_CONNECT,
1014: NEED_ACCEPT,
1015: NEED_ACTION,
1016: NEED_CWD,
1017: NEED_SEGMENT,
1018: NEED_STREAM,
1.63 frystyk 1019: NEED_BODY
1.60 frystyk 1020: } state;
1021:
1022: /* Jump into a second level state machine */
1023: while (1) {
1024: switch ((state) ctrl->substate) {
1025: case NEED_SELECT:
1026: ctrl->substate = data->pasv ? NEED_CONNECT : NEED_ACTION;
1027: break;
1028:
1029: case NEED_CONNECT:
1030: status = HTDoConnect(dnet, data->host, FTP_DATA);
1031: if (status == HT_WOULD_BLOCK)
1032: return HT_WOULD_BLOCK;
1033: else if (status == HT_OK) {
1034: if (PROT_TRACE)
1.78 eric 1035: HTTrace("FTP Data.... Active data socket %d\n",
1.60 frystyk 1036: dnet->sockfd);
1.81 frystyk 1037: HTNet_setPersistent(dnet, YES);
1038: HTChannel_setMode(dnet->channel, HT_CH_BATCH);
1.60 frystyk 1039: ctrl->substate = NEED_ACTION;
1.81 frystyk 1040: } else { /* Swap to PORT on the fly */
1.60 frystyk 1041: NETCLOSE(dnet->sockfd);
1042: dnet->sockfd = INVSOC;
1043: if (PROT_TRACE)
1.78 eric 1044: HTTrace("FTP......... Swap to PORT on the fly\n");
1.60 frystyk 1045: ctrl->substate = 0;
1.77 frystyk 1046: HT_FREE(segment);
1.60 frystyk 1047: return HT_OK;
1048: }
1.23 frystyk 1049: break;
1050:
1.60 frystyk 1051: case NEED_ACCEPT:
1052: {
1.72 frystyk 1053: SOCKET oldsocket = dnet->sockfd;
1054: status = HTDoAccept(dnet);
1.60 frystyk 1055: if (status == HT_WOULD_BLOCK)
1056: return HT_WOULD_BLOCK;
1057: else if (status == HT_OK) {
1058: if (PROT_TRACE)
1.78 eric 1059: HTTrace("FTP Data.... Passive data socket %d\n",
1.72 frystyk 1060: dnet->sockfd);
1061: NETCLOSE(oldsocket); /* We only accept one socket */
1.43 frystyk 1062: if (PROT_TRACE)
1.78 eric 1063: HTTrace("FTP Data.... New data socket %d\n",
1.60 frystyk 1064: dnet->sockfd);
1065: ctrl->substate = NEED_STREAM;
1066: } else
1067: ctrl->substate = SUB_ERROR;
1.23 frystyk 1068: }
1.60 frystyk 1069: break;
1.33 frystyk 1070:
1.60 frystyk 1071: case NEED_ACTION:
1072: if (!ctrl->sent) {
1073: char *cmd = (data->type=='L') ? "LIST" :
1074: (data->type=='N') ? "NLST" : "RETR";
1075: StrAllocCopy(segment, data->offset);
1076: HTUnEscape(segment);
1077: HTCleanTelnetString(segment);
1078: status = SendCommand(request, ctrl, cmd, segment);
1.77 frystyk 1079: HT_FREE(segment);
1.60 frystyk 1080: if (status == HT_WOULD_BLOCK)
1081: return HT_WOULD_BLOCK;
1082: else if (status == HT_ERROR)
1083: ctrl->substate = SUB_ERROR;
1084: ctrl->sent = YES;
1085: } else {
1.81 frystyk 1086: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 1087: if (status == HT_WOULD_BLOCK)
1088: return HT_WOULD_BLOCK;
1089: else if (status == HT_LOADED) {
1090: int code = ctrl->repcode;
1091: if (code==125 || code==150 || code==225)
1092: ctrl->substate=data->pasv ? NEED_STREAM : NEED_ACCEPT;
1093: else if (code/100==5 && !ctrl->cwd)
1094: ctrl->substate = NEED_SEGMENT;
1095: else
1096: ctrl->substate = SUB_ERROR;
1097: } else
1098: ctrl->substate = SUB_ERROR;
1099: ctrl->sent = NO;
1.23 frystyk 1100: }
1101: break;
1.60 frystyk 1102:
1103: case NEED_SEGMENT:
1.23 frystyk 1104: {
1.60 frystyk 1105: char *ptr;
1106: if (data->offset == data->file) {
1.63 frystyk 1107: if (ctrl->server == FTP_VMS) { /* Change to root */
1.77 frystyk 1108: if ((segment = (char *) HT_MALLOC(strlen(ctrl->uid)+3)) == NULL)
1109: HT_OUTOFMEM("segment ");
1.63 frystyk 1110: sprintf(segment, "[%s]", ctrl->uid);
1111: } else
1112: StrAllocCopy(segment, "/");
1.60 frystyk 1113: data->offset++;
1114: ctrl->substate = NEED_CWD;
1115: } else {
1116: if ((ptr = strchr(data->offset, '/'))) {
1117: *ptr='\0';
1118: StrAllocCopy(segment, data->offset);
1119: *ptr='/';
1120: data->offset = ++ptr;
1121: HTUnEscape(segment);
1122: HTCleanTelnetString(segment);
1123: ctrl->substate = NEED_CWD;
1.33 frystyk 1124: } else
1.60 frystyk 1125: ctrl->substate = NEED_ACTION;
1.23 frystyk 1126: }
1127: }
1128: break;
1129:
1.60 frystyk 1130: case NEED_CWD:
1131: if (!ctrl->sent) {
1132: status = SendCommand(request, ctrl, "CWD", segment);
1.77 frystyk 1133: HT_FREE(segment);
1.60 frystyk 1134: if (status == HT_WOULD_BLOCK)
1135: return HT_WOULD_BLOCK;
1136: else if (status == HT_ERROR)
1137: ctrl->substate = SUB_ERROR;
1138: ctrl->cwd = YES;
1139: ctrl->sent = YES;
1140: } else {
1.81 frystyk 1141: status = (*cnet->input->isa->read)(cnet->input);
1.60 frystyk 1142: if (status == HT_WOULD_BLOCK)
1143: return HT_WOULD_BLOCK;
1144: else if (status == HT_LOADED) {
1145: if (ctrl->repcode/100 == 2)
1146: ctrl->substate = NEED_SEGMENT;
1147: else
1148: ctrl->substate = SUB_ERROR;
1149: } else
1150: ctrl->substate = SUB_ERROR;
1151: ctrl->sent = NO;
1.33 frystyk 1152: }
1.60 frystyk 1153: break;
1.33 frystyk 1154:
1.81 frystyk 1155: case NEED_STREAM:
1156: /*
1157: ** Create the stream pipe FROM the channel to the application.
1158: ** The target for the input stream pipe is set up using the
1159: ** stream stack.
1160: */
1161: {
1162: HTStream * target;
1163: if (FTP_DIR(data)) {
1164: target = HTFTPDir_new(request,ctrl->server,data->type);
1165: } else {
1166: target = HTStreamStack(HTAnchor_format(request->anchor),
1167: request->output_format,
1168: request->output_stream,
1169: request, YES);
1170: }
1171: HTNet_getInput(dnet, target, NULL, 0);
1172: sockfd = dnet->sockfd; /* Ensure that we try data first */
1173: ctrl->substate = NEED_BODY;
1174: #if 0
1.60 frystyk 1175: {
1.63 frystyk 1176: if (FTP_DIR(data)) {
1.69 frystyk 1177: dnet->target=HTFTPDir_new(request,ctrl->server,data->type);
1.63 frystyk 1178: } else {
1179: dnet->target =
1180: HTStreamStack(HTAnchor_format(request->anchor),
1181: request->output_format,
1182: request->output_stream,
1183: request,YES);
1184: }
1.60 frystyk 1185: }
1.81 frystyk 1186: #endif
1187: }
1188: break;
1.23 frystyk 1189:
1.60 frystyk 1190: case NEED_BODY:
1.63 frystyk 1191: if (sockfd == dnet->sockfd) {
1.81 frystyk 1192: status = (*dnet->input->isa->read)(dnet->input);
1.63 frystyk 1193: if (status == HT_WOULD_BLOCK)
1194: return HT_WOULD_BLOCK;
1.75 frystyk 1195: else if (status == HT_LOADED || status == HT_CLOSED) {
1.63 frystyk 1196: if (data->ready)
1197: ctrl->substate = SUB_SUCCESS;
1198: else
1199: sockfd = cnet->sockfd;
1200: data->ready = YES;
1.76 frystyk 1201: } else {
1.63 frystyk 1202: ctrl->substate = SUB_ERROR;
1.76 frystyk 1203: data->stream_error = YES;
1204: }
1.63 frystyk 1205: } else {
1.81 frystyk 1206: status = (*cnet->input->isa->read)(cnet->input);
1.63 frystyk 1207: if (status == HT_WOULD_BLOCK)
1208: return HT_WOULD_BLOCK;
1209: else if (status == HT_LOADED) {
1210: if (ctrl->repcode/100 == 2) {
1211: if (data->ready)
1212: ctrl->substate = SUB_SUCCESS;
1213: else
1214: sockfd = dnet->sockfd;
1215: data->ready = YES;
1216: } else
1217: ctrl->substate = SUB_ERROR;
1218: } else
1.60 frystyk 1219: ctrl->substate = SUB_ERROR;
1.63 frystyk 1220: }
1.23 frystyk 1221: break;
1.22 frystyk 1222:
1.60 frystyk 1223: case SUB_ERROR:
1224: if (PROT_TRACE)
1.78 eric 1225: HTTrace("FTP......... Can't retrieve object\n");
1.60 frystyk 1226: ctrl->substate = 0;
1.77 frystyk 1227: HT_FREE(segment);
1.60 frystyk 1228: return HT_ERROR;
1.23 frystyk 1229: break;
1230:
1.60 frystyk 1231: case SUB_SUCCESS:
1232: if (PROT_TRACE)
1.78 eric 1233: HTTrace("FTP......... Object is loaded\n");
1.60 frystyk 1234: ctrl->substate = 0;
1.77 frystyk 1235: HT_FREE(segment);
1.60 frystyk 1236: return HT_LOADED;
1.23 frystyk 1237: break;
1.1 timbl 1238: }
1239: }
1.23 frystyk 1240: }
1.1 timbl 1241:
1.23 frystyk 1242: /* ------------------------------------------------------------------------- */
1243:
1244: /* Retrieve File from Server as an atomic action.
1245: ** -----------------------------------------------
1.58 frystyk 1246: ** Given a hypertext address, this routine loads a document.
1.23 frystyk 1247: **
1248: ** On entry,
1.58 frystyk 1249: ** request This is the request structure
1250: ** returns HT_ERROR Error has occured in call back
1251: ** HT_OK Call back was OK
1252: */
1.65 frystyk 1253: PUBLIC int HTLoadFTP (SOCKET soc, HTRequest * request, SockOps ops)
1.58 frystyk 1254: {
1255: int status = HT_ERROR;
1.84 ! frystyk 1256: HTNet * cnet = HTRequest_net(request);
! 1257: ftp_ctrl * ctrl = NULL;
! 1258: ftp_data * data = NULL;
! 1259: HTParentAnchor * anchor = HTRequest_anchor(request);
! 1260: char * url = HTAnchor_physical(anchor);
1.23 frystyk 1261:
1.58 frystyk 1262: /*
1.60 frystyk 1263: ** Initiate a new FTP ctrl and data structure and bind to request structure
1.58 frystyk 1264: ** This is actually state FTP_BEGIN, but it can't be in the state
1265: ** machine as we need the structure first.
1266: */
1267: if (ops == FD_NONE) {
1.78 eric 1268: if (PROT_TRACE) HTTrace("FTP......... Looking for `%s\'\n",url);
1.77 frystyk 1269: if ((ctrl = (ftp_ctrl *) HT_CALLOC(1, sizeof(ftp_ctrl))) == NULL ||
1270: (data = (ftp_data *) HT_CALLOC(1, sizeof(ftp_data))) == NULL)
1271: HT_OUTOFMEM("HTLoadFTP");
1.73 frystyk 1272: ctrl->cmd = HTChunk_new(128);
1.58 frystyk 1273: ctrl->state = FTP_BEGIN;
1.60 frystyk 1274: ctrl->server = FTP_UNSURE;
1.74 frystyk 1275: ctrl->dnet = HTNet_dup(cnet);
1.60 frystyk 1276: cnet->context = ctrl; /* Context for control connection */
1277: ctrl->dnet->context = data; /* Context for data connection */
1278: } else if (ops == FD_CLOSE) { /* Interrupted */
1279: if(HTRequest_isPostWeb(request)&&!HTRequest_isMainDestination(request))
1280: FTPCleanup(request, HT_IGNORE);
1281: else
1282: FTPCleanup(request, HT_INTERRUPTED);
1283: return HT_OK;
1284: } else {
1285: ctrl = (ftp_ctrl *) cnet->context; /* Get existing copy */
1286: data = (ftp_data *) ctrl->dnet->context;
1287: }
1.58 frystyk 1288:
1289: /* Now jump into the machine. We know the state from the previous run */
1290: while (1) {
1291: switch (ctrl->state) {
1.60 frystyk 1292: case FTP_BEGIN:
1.83 frystyk 1293: HTFTPParseURL(request, url, ctrl, data);
1.60 frystyk 1294: if (data->type != 'N') {
1.84 ! frystyk 1295: HTBind_getBindings(anchor);
1.81 frystyk 1296: #if 0
1.84 ! frystyk 1297: if (HTAnchor_encoding(anchor) != HTAtom_for("7bit"))
1.81 frystyk 1298: #endif
1.60 frystyk 1299: data->type = 'I';
1300: }
1301: ctrl->state = FTP_NEED_CCON;
1302: break;
1303:
1304: case FTP_NEED_CCON:
1305: status = HTDoConnect(cnet, url, FTP_PORT);
1306: if (status == HT_OK) {
1.81 frystyk 1307: HTHost * host = HTNet_host(cnet);
1308:
1309: /*
1310: ** Check the protocol class to see if we have connected to a
1311: ** the right class of server, in this case HTTP.
1312: */
1313: {
1314: char * s_class = HTHost_class(host);
1315: if (s_class && strcasecomp(s_class, "ftp")) {
1316: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1317: NULL, 0, "HTLoadNews");
1318: ctrl->state = FTP_ERROR;
1319: break;
1320: }
1321: HTHost_setClass(host, "ftp");
1322: }
1323:
1324: /* Check persistent connection */
1325: if (HTNet_persistent(cnet)) {
1326: ctrl->server = HTHost_version(host);
1327: if (PROT_TRACE)
1328: HTTrace("FTP Server.. Cache says type %d server\n",
1329: ctrl->server);
1330: ctrl->reset = 1;
1331: } else
1332: HTNet_setPersistent(cnet, YES);
1333: #if 0
1.60 frystyk 1334: char *s_class = HTDNS_serverClass(cnet->dns);
1335: if (s_class && strcasecomp(s_class, "ftp")) {
1.68 frystyk 1336: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1337: NULL, 0, "HTLoadFTP");
1.60 frystyk 1338: ctrl->state = FTP_ERROR;
1339: break;
1340: }
1341: HTDNS_setServerClass(cnet->dns, "ftp");
1.63 frystyk 1342: if (HTDNS_socket(cnet->dns) != INVSOC) {
1343: ctrl->server = HTDNS_serverVersion(cnet->dns);
1344: if (PROT_TRACE)
1.78 eric 1345: HTTrace("FTP Server.. We know from cache that this is a type %d server\n",
1.63 frystyk 1346: ctrl->server);
1.60 frystyk 1347: ctrl->reset = 1;
1.63 frystyk 1348: } else
1.60 frystyk 1349: HTDNS_setSocket(cnet->dns, cnet->sockfd);
1.81 frystyk 1350: #endif
1.23 frystyk 1351:
1.81 frystyk 1352: /*
1353: ** Create the stream pipe FROM the channel to the application.
1354: ** The target for the input stream pipe is set up using the
1355: ** stream stack.
1356: */
1357: HTNet_getInput(cnet, FTPStatus_new(request, ctrl), NULL, 0);
1.23 frystyk 1358:
1.60 frystyk 1359: /*
1.81 frystyk 1360: ** Create the stream pipe TO the channel from the application
1361: ** and hook it up to the request object
1362: */
1363: {
1364: HTOutputStream * output = HTNet_getOutput(cnet, NULL, 0);
1365: HTRequest_setInputStream(request, (HTStream *) output);
1366: }
1367:
1368: /*
1.60 frystyk 1369: ** Set up concurrent read/write if this request isn't the
1370: ** source for a PUT or POST. As source we don't start reading
1371: ** before all destinations are ready. If destination then
1372: ** register the input stream and get ready for read
1373: */
1374: if (HTRequest_isPostWeb(request)) {
1.82 eric 1375: HTEvent_register(cnet->sockfd, request, (SockOps) FD_READ,
1.60 frystyk 1376: HTLoadFTP, cnet->priority);
1377: HTRequest_linkDestination(request);
1378: }
1379:
1380: ctrl->state = FTP_NEED_LOGIN;
1381: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
1382: return HT_OK;
1383: else
1384: ctrl->state = FTP_ERROR; /* Error or interrupt */
1385: break;
1386:
1387: case FTP_NEED_LOGIN:
1388: status = HTFTPLogin(request, cnet, ctrl);
1389: if (status == HT_WOULD_BLOCK) return HT_OK;
1390: ctrl->state = (status == HT_OK) ? FTP_NEED_DCON : FTP_ERROR;
1391: break;
1392:
1393: case FTP_NEED_DCON:
1394: status = HTFTPDataConnection(request, cnet, ctrl, data);
1395: if (status == HT_WOULD_BLOCK) return HT_OK;
1396: if (status == HT_OK)
1397: ctrl->state = (data->type=='N') ?
1398: FTP_NEED_SERVER : FTP_NEED_DATA;
1399: else
1400: ctrl->state = FTP_ERROR;
1401: break;
1402:
1403: case FTP_NEED_DATA:
1.63 frystyk 1404: status = HTFTPGetData(request, cnet, soc, ctrl, data);
1.60 frystyk 1405: if (status == HT_WOULD_BLOCK) return HT_OK;
1406: if (status == HT_LOADED)
1407: ctrl->state = FTP_SUCCESS;
1408: else if (status == HT_OK)
1409: ctrl->state = FTP_NEED_DCON;
1.76 frystyk 1410: else if (!FTP_DIR(data) && !data->stream_error) {
1.60 frystyk 1411: FTPListType(data, ctrl->server);
1412: ctrl->state = FTP_NEED_SERVER; /* Try a dir instead? */
1413: } else
1414: ctrl->state = FTP_ERROR;
1415: break;
1.23 frystyk 1416:
1.60 frystyk 1417: case FTP_NEED_SERVER:
1418: status = HTFTPServerInfo(request, cnet, ctrl, data);
1419: if (status == HT_WOULD_BLOCK) return HT_OK;
1420: ctrl->state = FTP_NEED_DATA;
1421: break;
1422:
1423: case FTP_SUCCESS:
1424: if (HTRequest_isPostWeb(request)) {
1425: BOOL main = HTRequest_isMainDestination(request);
1426: if (HTRequest_isDestination(request)) {
1427: HTLink *link =
1428: HTAnchor_findLink((HTAnchor *) request->source->anchor,
1.84 ! frystyk 1429: (HTAnchor *) anchor);
1.72 frystyk 1430: HTLink_setResult(link, HT_LINK_OK);
1.23 frystyk 1431: }
1.60 frystyk 1432: HTRequest_removeDestination(request);
1433: FTPCleanup(request, main ? HT_LOADED : HT_IGNORE);
1434: } else
1435: FTPCleanup(request, HT_LOADED);
1436: return HT_OK;
1437: break;
1438:
1439: case FTP_ERROR:
1440: /* Clean up the other connections or just this one */
1441: if (HTRequest_isPostWeb(request)) {
1442: BOOL main = HTRequest_isMainDestination(request);
1443: HTRequest_killPostWeb(request);
1444: if (HTRequest_isDestination(request)) {
1445: HTLink *link =
1446: HTAnchor_findLink((HTAnchor *) request->source->anchor,
1.84 ! frystyk 1447: (HTAnchor *) anchor);
1.72 frystyk 1448: HTLink_setResult(link, HT_LINK_ERROR);
1.30 luotonen 1449: }
1.60 frystyk 1450: HTRequest_removeDestination(request);
1451: FTPCleanup(request, main ? HT_ERROR : HT_IGNORE);
1452: } else
1453: FTPCleanup(request, HT_ERROR);
1454: return HT_OK;
1455: break;
1.23 frystyk 1456: }
1.60 frystyk 1457: } /* End of while(1) */
1.23 frystyk 1458: }
1.22 frystyk 1459:
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