Annotation of libwww/Library/src/HTFTP.c, revision 1.34
1.1 timbl 1: /* File Transfer Protocol (FTP) Client
2: ** for a WorldWideWeb browser
3: ** ===================================
4: **
5: ** A cache of control connections is kept.
6: **
7: ** Note: Port allocation
8: **
9: ** It is essential that the port is allocated by the system, rather
10: ** than chosen in rotation by us (POLL_PORTS), or the following
11: ** problem occurs.
12: **
13: ** It seems that an attempt by the server to connect to a port which has
14: ** been used recently by a listen on the same socket, or by another
15: ** socket this or another process causes a hangup of (almost exactly)
16: ** one minute. Therefore, we have to use a rotating port number.
17: ** The problem remains that if the application is run twice in quick
18: ** succession, it will hang for what remains of a minute.
19: **
20: ** Authors
21: ** TBL Tim Berners-lee <timbl@info.cern.ch>
22: ** DD Denis DeLaRoca 310 825-4580 <CSP1DWD@mvs.oac.ucla.edu>
1.22 frystyk 23: ** LM Lou Montulli <montulli@ukanaix.cc.ukans.edu>
24: ** FM Foteos Macrides <macrides@sci.wfeb.edu>
1.23 frystyk 25: ** HF Henrik Frystyk <frystyk@dxcern.cern.ch>
1.30 luotonen 26: ** AL Ari Luotonen <luotonen@www.cern.ch>
1.23 frystyk 27: **
1.1 timbl 28: ** History:
29: ** 2 May 91 Written TBL, as a part of the WorldWideWeb project.
30: ** 15 Jan 92 Bug fix: close() was used for NETCLOSE for control soc
31: ** 10 Feb 92 Retry if cached connection times out or breaks
32: ** 8 Dec 92 Bug fix 921208 TBL after DD
33: ** 17 Dec 92 Anon FTP password now just WWWuser@ suggested by DD
1.2 timbl 34: ** fails on princeton.edu!
1.22 frystyk 35: ** 27 Dec 93 (FM) Fixed up so FTP now works with VMS hosts. Path
36: ** must be Unix-style and cannot include the device
37: ** or top directory.
38: ** ?? ??? ?? (LM) Added code to prompt and send passwords for non
39: ** anonymous FTP
40: ** 25 Mar 94 (LM) Added code to recognize different ftp server types
41: ** and code to parse dates and sizes on most hosts.
42: ** 27 Mar 93 (FM) Added code for getting dates and sizes on VMS hosts.
1.23 frystyk 43: ** 27 Apr 94 (HF) The module is basically rewritten to conform with
44: ** rfc 959, 1123 and 1579 and turned into a state
45: ** machine. New semantics of ftp URLs are supported.
1.30 luotonen 46: ** 2 May 94 (AL) Fixed possible security hole when the URL contains
47: ** a newline, that could cause multiple commands to be
48: ** sent to an FTP server.
1.1 timbl 49: **
50: ** Options:
1.23 frystyk 51: ** LISTEN The default way to open a dats connection is by using
52: ** PASV, but if that fails, we try PORT. If the PORT part
53: ** is unwanted, it can be disabled by undefine LISTEN.
1.1 timbl 54: **
1.22 frystyk 55: ** Notes:
56: ** Portions Copyright 1994 Trustees of Dartmouth College
57: ** Code for recognizing different FTP servers and
58: ** parsing "ls -l" output taken from Macintosh Fetch
59: ** program with permission from Jim Matthews,
60: ** Dartmouth Software Development Team.
61: **
1.23 frystyk 62: ** BUGS: @@@ Use configuration file for user names
63: **
64: */
1.1 timbl 65:
1.22 frystyk 66: /* Implementation dependent include files */
67: #include "tcp.h"
1.1 timbl 68:
1.22 frystyk 69: /* Library include files */
1.1 timbl 70: #include "HTParse.h"
71: #include "HTUtils.h"
72: #include "HTTCP.h"
73: #include "HTAnchor.h"
1.22 frystyk 74: #include "HTFile.h"
1.6 secret 75: #include "HTBTree.h"
76: #include "HTChunk.h"
1.22 frystyk 77: #include "HTAlert.h"
1.21 frystyk 78: #include "HTDirBrw.h"
1.33 frystyk 79: #include "HTError.h"
1.22 frystyk 80: #include "HTFTP.h" /* Implemented here */
81:
82: /* Macros and other defines */
1.23 frystyk 83: /* If LISTEN is defined, then first 'PASV' then 'PORT' (if error) is tried,
84: else ONLY 'PASV' is used in order to establish a data connection. */
85: #define LISTEN
86: #ifdef LISTEN
87: /* #define REPEAT_LISTEN */ /* Reuse the portnumber once found */
88: /* #define POLL_PORTS */ /* If allocation does not work, poll ourselves.*/
89: #endif
1.22 frystyk 90:
1.33 frystyk 91: #define FTP_DEFAULT_TIMEOUT 1000L /* 1/100 seconds */
92:
1.1 timbl 93: #ifndef IPPORT_FTP
1.33 frystyk 94: #define IPPORT_FTP 21
1.1 timbl 95: #endif
96:
1.33 frystyk 97: #define WWW_FTP_CLIENT "WWWuser" /* If can't get user-info, use this */
98:
1.22 frystyk 99: /* Globals */
1.23 frystyk 100: PUBLIC BOOL HTFTPUserInfo = YES;
1.33 frystyk 101: PUBLIC long HTFTPTimeOut = FTP_DEFAULT_TIMEOUT;
1.22 frystyk 102:
1.23 frystyk 103: /* Type definitions and global variables etc. local to this module */
104: PRIVATE user_info *old_user; /* Only used if HT_REUSE_USER_INFO is on */
105: PRIVATE HTList *session; /* List of control connections in a session */
1.1 timbl 106:
107: #ifdef POLL_PORTS
1.23 frystyk 108: #define FIRST_TCP_PORT 1024 /* Region to try for a listening port */
109: #define LAST_TCP_PORT 5999
110: PRIVATE unsigned short port_number = FIRST_TCP_PORT;
1.1 timbl 111: #endif
112:
113: #ifdef LISTEN
1.23 frystyk 114: #ifdef REPEAT_LISTEN
115: PRIVATE int master_socket = -1; /* Listening socket = invalid */
116: #endif
117: PRIVATE char * this_addr; /* Local address */
1.1 timbl 118: #endif
119:
1.23 frystyk 120: /* ------------------------------------------------------------------------- */
121: /* ************** TEMPORARY STUFF ************* */
122: /* ------------------------------------------------------------------------- */
123: #define MAX_ACCEPT_POLL 30
124: #define FCNTL(r, s, t) fcntl(r, s, t)
125:
1.26 luotonen 126:
1.32 frystyk 127: /* HTDoConnect()
128: **
129: ** TEMPORARY FUNCTION.
130: ** Note: Any port indication in URL, e.g., as `host:port' overwrites
131: ** the default_port value.
132: **
133: ** Returns 0 if OK, -1 on error
134: */
1.33 frystyk 135: PUBLIC int HTDoConnect ARGS5(HTRequest *, request, char *, url,
1.31 frystyk 136: u_short, default_port, int *, s,
137: u_long *, addr)
1.23 frystyk 138: {
139: int status;
140: struct sockaddr_in sock_addr;
141: char *p1 = HTParse(url, "", PARSE_HOST);
142: char *at_sign;
143: char *host;
144:
145: /* if theres an @ then use the stuff after it as a hostname */
146: if((at_sign = strchr(p1,'@')) != NULL)
147: host = at_sign+1;
148: else
149: host = p1;
150: if (TRACE) fprintf(stderr, "HTDoConnect. Looking up `%s\'\n", host);
151:
152: /* Set up defaults: */
1.25 frystyk 153: memset((void *) &sock_addr, '\0', sizeof(sock_addr));
1.23 frystyk 154: sock_addr.sin_family = AF_INET;
155: sock_addr.sin_port = htons(default_port);
156:
157: /* Get node name */
158: if (HTParseInet(&sock_addr, host)) {
159: if (TRACE) fprintf(stderr, "HTDoConnect. Can't locate remote host `%s\'\n", host);
1.33 frystyk 160: HTErrorAdd(request, ERR_FATAL, NO, HTERR_NO_REMOTE_HOST,
161: (void *) host, strlen(host), "HTDoConnect");
1.23 frystyk 162: free (p1);
163: *s = -1;
164: return -1;
165: }
166:
167: if ((*s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
1.33 frystyk 168: HTErrorSysAdd(request, ERR_FATAL, NO, "socket");
1.23 frystyk 169: free (p1);
1.33 frystyk 170: return -1;
1.23 frystyk 171: }
172: if (addr)
173: *addr = ntohl(sock_addr.sin_addr.s_addr);
174:
175: if (TRACE)
176: fprintf(stderr, "HTDoConnect. Created socket number %d\n", *s);
177:
178: if ((status = connect(*s, (struct sockaddr *) &sock_addr,
179: sizeof(sock_addr))) < 0) {
1.33 frystyk 180: HTErrorSysAdd(request, ERR_FATAL, NO, "connect");
1.23 frystyk 181: if (NETCLOSE(*s) < 0)
1.33 frystyk 182: HTErrorSysAdd(request, ERR_FATAL, NO, "close");
1.23 frystyk 183: free(p1);
184: *s = -1;
185: return -1;
186: }
187: free(p1);
188: return status;
189: }
190:
191:
192: /* HTDoAccept()
193: **
194: ** This function makes a non-blocking accept on a port and polls every
195: ** second until MAX_ACCEPT_POLL or interrupted by user.
196: **
197: ** BUGS Interrupted is not yet implemented!!!
198: **
199: ** Returns 0 if OK, -1 on error
200: */
1.33 frystyk 201: PRIVATE int HTDoAccept ARGS2(HTRequest *, request, int, sockfd)
1.23 frystyk 202: {
203: struct sockaddr_in soc_address;
204: int status;
205: int cnt;
206: int soc_addrlen = sizeof(soc_address);
207: if (sockfd < 0) {
208: if (TRACE) fprintf(stderr, "HTDoAccept.. Bad socket number\n");
209: return -1;
210: }
211:
212: /* First make the socket non-blocking */
213: if((status = FCNTL(sockfd, F_GETFL, 0)) != -1) {
1.33 frystyk 214: status |= FNDELAY;
1.23 frystyk 215: status = FCNTL(sockfd, F_SETFL, status);
216: }
217: if (status == -1) {
1.33 frystyk 218: HTErrorSysAdd(request, ERR_FATAL, NO, "fcntl");
1.23 frystyk 219: return -1;
220: }
1.22 frystyk 221:
1.23 frystyk 222: /* Now poll every sekund */
223: for(cnt=0; cnt<MAX_ACCEPT_POLL; cnt++) {
224: if ((status = accept(sockfd, (struct sockaddr*) &soc_address,
225: &soc_addrlen)) >= 0) {
226: if (TRACE) fprintf(stderr,
227: "HTDoAccept.. Accepted new socket %d\n",
228: status);
229: return status;
230: } else
1.33 frystyk 231: HTErrorSysAdd(request, ERR_WARNING, YES, "accept");
1.23 frystyk 232: sleep(1);
233: }
234:
1.33 frystyk 235: /* If nothing has happened */
1.23 frystyk 236: if (TRACE)
237: fprintf(stderr, "HTDoAccept.. Timed out, no connection!\n");
1.33 frystyk 238: HTErrorAdd(request, ERR_FATAL, NO, HTERR_TIME_OUT, NULL, 0, "HTDoAccept");
1.23 frystyk 239: return -1;
240: }
1.22 frystyk 241:
242: /* ------------------------------------------------------------------------- */
243: /* Directory Specific Functions */
244: /* ------------------------------------------------------------------------- */
1.25 frystyk 245:
1.33 frystyk 246:
247: /* HTFTPParseError
248: **
249: ** This function parses an (multiple line) error message and takes out
250: ** the error codes.
251: **
252: */
253: PRIVATE void HTFTPParseError ARGS1(HTChunk **, error)
254: {
255: HTChunk *oldtext = *error;
256: if (!oldtext || !oldtext->data) {
257: if (TRACE) fprintf(stderr, "FTP......... No error message?\n");
258: return;
259: }
260: {
261: int result; /* The first return code in the chunk */
262: char *oldp = oldtext->data;
263: HTChunk *newtext = HTChunkCreate(128);
264: if (oldtext->size > 4 && sscanf(oldp, "%d", &result) == 1) {
265: oldp += 4;
266: while (*oldp) {
267: if (*oldp == '\n') {
268: int tmpres;
269: if (sscanf(++oldp, "%d", &tmpres) == 1) {
270: if (tmpres == result) {
271: HTChunkPutc(newtext, ' ');
272: oldp += 3; /* Skip this code */
273: }
274: }
275: } else
276: HTChunkPutc(newtext, *oldp);
277: oldp++;
278: }
279: }
280: HTChunkFree(oldtext);
281: HTChunkTerminate(newtext);
282: *error = newtext;
283: }
284: return;
285: }
286:
287:
1.25 frystyk 288: /* HTFTPParseWelcome
1.23 frystyk 289: **
290: ** This function parses the welcome message stored in ctrl->welcome.
291: ** Only multi-line messages are considered interesting, and the starting
292: ** return code is removed.
293: **
294: */
1.25 frystyk 295: PRIVATE void HTFTPParseWelcome ARGS1(HTChunk **, welcome)
1.23 frystyk 296: {
1.25 frystyk 297: HTChunk *oldtext = *welcome;
1.33 frystyk 298: if (!oldtext || !oldtext->data) {
1.23 frystyk 299: if (TRACE) fprintf(stderr, "FTP......... No welcome message?\n");
300: return;
301: }
302: {
1.28 frystyk 303: int result; /* The first return code in the chunk */
304: char cont; /* Either ' ' or '-' */
305: char *oldp = oldtext->data;
1.23 frystyk 306: HTChunk *newtext = HTChunkCreate(128);
1.28 frystyk 307: if (oldtext->size > 4 && sscanf(oldp, "%d%c", &result, &cont) == 2) {
308: oldp += 4;
309: while (cont == '-') {
1.23 frystyk 310: HTChunkPutc(newtext, *oldp);
311: if (*oldp == '\n') {
1.28 frystyk 312: int tmpres;
313: if (isdigit(*++oldp) &&
314: sscanf(oldp, "%d%c", &tmpres, &cont) == 2) {
315: if (tmpres == result && cont == ' ')
316: break;
317: else
318: oldp +=3; /* Skip this code */
319: }
1.23 frystyk 320: }
1.28 frystyk 321: oldp++;
1.23 frystyk 322: }
323: }
324: HTChunkTerminate(newtext);
325: HTChunkFree(oldtext);
1.25 frystyk 326: *welcome = newtext;
327: }
328: }
329:
330:
331: /* HTFTPAddWelcome
332: **
333: ** This function accumulates every welcome messages from the various
334: ** states in the login procedure.
335: **
336: */
337: PRIVATE void HTFTPAddWelcome ARGS1(ftp_ctrl_info *, ctrl)
338: {
339: if (!ctrl->welcome) /* If first time */
340: ctrl->welcome = HTChunkCreate(128);
341:
342: HTFTPParseWelcome(&ctrl->reply);
343: if (ctrl->reply->size > 1) {
1.28 frystyk 344: HTChunkPutc(ctrl->welcome, '\n');
1.25 frystyk 345: HTChunkPuts(ctrl->welcome, ctrl->reply->data);
1.23 frystyk 346: }
347: }
1.22 frystyk 348:
1.23 frystyk 349:
350: #if 0 /* NOT NEEDED FOR THE MOMENT */
1.22 frystyk 351: /*
352: * is_ls_date() --
353: * Return TRUE if s points to a string of the form:
354: * "Sep 1 1990 " or
355: * "Sep 11 11:59 " or
356: * "Dec 12 1989 " or
357: * "FCv 23 1990 " ...
358: *
359: * Thanks to James.W.Matthews@Dartmouth.EDU (James W. Matthews)
360: */
361: PRIVATE BOOL is_ls_date ARGS1(char *, s)
362: {
363: /* must start with three alpha characget_striters */
364: if (!isalpha(*s++) || !isalpha(*s++) || !isalpha(*s++))
365: return FALSE;
366:
367: /* space */
368: if (*s++ != ' ')
369: return FALSE;
370:
371: /* space or digit */
372: if ((*s != ' ') && !isdigit(*s))
373: return FALSE;
374: s++;
375:
376: /* digit */
377: if (!isdigit(*s++))
378: return FALSE;
379:
380: /* space */
381: if (*s++ != ' ')
382: return FALSE;
383:
384: /* space or digit */
385: if ((*s != ' ') && !isdigit(*s))
386: return FALSE;
387: s++;
388:
389: /* digit */
390: if (!isdigit(*s++))
391: return FALSE;
392:
393: /* colon or digit */
394: if ((*s != ':') && !isdigit(*s))
395: return FALSE;
396: s++;
397:
398: /* digit */
399: if (!isdigit(*s++))
400: return FALSE;
401:
402: /* space or digit */
403: if ((*s != ' ') && !isdigit(*s))
404: return FALSE;
405: s++;
406:
407: /* space */
408: if (*s++ != ' ')
409: return FALSE;
410:
411: return TRUE;
412: } /* is_ls_date() */
1.23 frystyk 413: #endif
1.22 frystyk 414:
415: /* HTStrpMonth()
416: **
417: ** Returns the number of the month given or -1 on error.
418: **
419: ** BUG: Handles US dates only!!!
420: */
421: PRIVATE int HTStrpMonth ARGS1(char *, month)
422: {
423: int ret;
424: if (!strncmp(month, "JAN", 3))
425: ret = 0;
426: else if (!strncmp(month, "FEB", 3))
427: ret = 1;
428: else if (!strncmp(month, "MAR", 3))
429: ret = 2;
430: else if (!strncmp(month, "APR", 3))
431: ret = 3;
432: else if (!strncmp(month, "MAY", 3))
433: ret = 4;
434: else if (!strncmp(month, "JUN", 3))
435: ret = 5;
436: else if (!strncmp(month, "JUL", 3))
437: ret = 6;
438: else if (!strncmp(month, "AUG", 3))
439: ret = 7;
440: else if (!strncmp(month, "SEP", 3))
441: ret = 8;
442: else if (!strncmp(month, "OCT", 3))
443: ret = 9;
444: else if (!strncmp(month, "NOV", 3))
445: ret = 10;
446: else if (!strncmp(month, "DEC", 3))
447: ret = 11;
448: else {
449: ret = -1;
1.23 frystyk 450: if (TRACE) fprintf(stderr, "HTStrpMonth. Couldn't resolve date.\n");
1.22 frystyk 451: }
452: return ret;
453: }
454:
455:
456: /* HTStrpTime()
457: **
1.23 frystyk 458: ** Converts a date string from 'ls -l' to a time_t number
1.22 frystyk 459: ** This is needed in order to put out the date using the same format
460: ** for all directory listings.
461: **
1.23 frystyk 462: ** Returns 0 on error.
1.22 frystyk 463: */
1.23 frystyk 464: PRIVATE time_t HTStrpTime ARGS1(char *, datestr)
1.22 frystyk 465: {
466: struct tm *time_info; /* Points to static tm structure */
467: char *bcol = datestr; /* Column begin */
468: char *ecol; /* Column end */
469: long tval;
470: int cnt;
1.23 frystyk 471: time_t curtime = time(NULL);
1.22 frystyk 472: if ((time_info = gmtime(&curtime)) == NULL) {
473: if (TRACE)
1.23 frystyk 474: fprintf(stderr, "HTStrpTime.. Can't get current time.\n");
475: return (time_t) 0;
1.22 frystyk 476: }
477: time_info->tm_isdst = -1; /* Disable summer time */
478: for (cnt=0; cnt<3; cnt++) /* Month */
479: *bcol++ = toupper(*bcol);
480: if ((time_info->tm_mon = HTStrpMonth(datestr)) < 0)
1.23 frystyk 481: return (time_t) 0;
1.22 frystyk 482: ecol = bcol; /* Day */
483: while (*ecol++ == ' '); /* Spool to other side of day */
484: while (*ecol++ != ' ');
485: *--ecol = '\0';
486: time_info->tm_mday = atoi(bcol);
487: time_info->tm_wday = 0;
488: time_info->tm_yday = 0;
489: bcol = ++ecol; /* Year */
490: if ((ecol = strchr(bcol, ':')) == NULL) {
491: time_info->tm_year = atoi(bcol)-1900;
492: time_info->tm_sec = 0;
493: time_info->tm_min = 0;
494: time_info->tm_hour = 0;
495: } else { /* Time */
1.23 frystyk 496: /* If the time is given as hh:mm, then the file is less than 1 year
497: old, but we might shift calandar year. This is avoided by checking
498: if the date parsed is future or not. */
1.22 frystyk 499: *ecol = '\0';
500: time_info->tm_sec = 0;
1.23 frystyk 501: time_info->tm_min = atoi(++ecol); /* Right side of ':' */
1.22 frystyk 502: time_info->tm_hour = atoi(bcol); /* Left side of ':' */
1.23 frystyk 503: if (mktime(time_info) > curtime)
504: --time_info->tm_year;
1.22 frystyk 505: }
1.23 frystyk 506: return ((tval = mktime(time_info)) == -1 ? (time_t) 0 : tval);
1.22 frystyk 507: }
508:
509:
510: /* HTVMSStrpTime()
511: **
1.23 frystyk 512: ** Converts a date string from vms to a time_t number
1.22 frystyk 513: ** This is needed in order to put out the date using the same format
514: ** for all directory listings.
515: **
1.23 frystyk 516: ** Returns 0 on error
1.22 frystyk 517: */
1.23 frystyk 518: PRIVATE time_t HTVMSStrpTime ARGS1(char *, datestr)
1.22 frystyk 519: {
520: struct tm *time_info; /* Points to static tm structure */
521: char *col;
522: long tval;
1.23 frystyk 523: time_t curtime = time(NULL);
1.22 frystyk 524: if ((time_info = gmtime(&curtime)) == NULL)
1.23 frystyk 525: return (time_t) 0;
1.22 frystyk 526: time_info->tm_isdst = -1; /* Disable summer time */
527: if ((col = strtok(datestr, "-")) == NULL)
1.23 frystyk 528: return (time_t) 0;
1.22 frystyk 529: time_info->tm_mday = atoi(col); /* Day */
530: time_info->tm_wday = 0;
531: time_info->tm_yday = 0;
532: if ((col = strtok(NULL, "-")) == NULL ||
533: (time_info->tm_mon = HTStrpMonth(col)) < 0)
1.23 frystyk 534: return (time_t) 0;
1.22 frystyk 535: if ((col = strtok(NULL, " ")) == NULL) /* Year */
1.23 frystyk 536: return (time_t) 0;
1.22 frystyk 537: time_info->tm_year = atoi(col)-1900;
538: if ((col = strtok(NULL, ":")) == NULL) /* Hour */
1.23 frystyk 539: return (time_t) 0;
1.22 frystyk 540: time_info->tm_hour = atoi(col);
541: if ((col = strtok(NULL, " ")) == NULL) /* Mins */
1.23 frystyk 542: return (time_t) 0;
1.22 frystyk 543: time_info->tm_min = atoi(col);
544: time_info->tm_sec = 0;
1.23 frystyk 545: return ((tval = mktime(time_info)) < 0 ? (time_t) 0 : tval);
1.22 frystyk 546: }
547:
548:
549: /* HTFTPFilePerm()
550: **
551: ** Converts the file type from 'ls -l' into a long. The reason for
552: ** doing this is to be able to handle the file type and icon selection
553: ** similar to the Unix way used in HTBrowseDirectory().
554: **
555: */
556: PRIVATE long HTFTPFilePerm ARGS1(char *, permission)
557: {
558: char *strptr = permission;
559: long mode = 0L;
560:
561: /* Special files etc. are all handled like regular files */
562: switch (*strptr++) { /* File type */
563: case 'd': mode = S_IFMT & S_IFDIR; break;
564: case 'l': mode = S_IFMT & S_IFLNK; break;
565: default: mode = S_IFMT & S_IFREG; break;
566: }
567: if (*strptr++ == 'r') mode |= S_IRUSR; /* User */
568: if (*strptr++ == 'w') mode |= S_IWUSR;
569: if (*strptr == 'x')
570: mode |= S_IXUSR;
571: else if (*strptr == 's')
572: mode |= (S_IXUSR | S_ISUID);
573: else if (*strptr == 'S')
574: mode |= S_ISUID;
575: strptr++;
576: if (*strptr++ == 'r') mode |= S_IRGRP; /* Group */
577: if (*strptr++ == 'w') mode |= S_IWGRP;
578: if (*strptr == 'x')
579: mode |= S_IXGRP;
580: else if (*strptr == 's')
581: mode |= (S_IXGRP | S_ISGID);
582: else if (*strptr == 'S')
583: mode |= S_ISGID;
584: strptr++;
585: if (*strptr++ == 'r') mode |= S_IROTH; /* Other */
586: if (*strptr++ == 'w') mode |= S_IWOTH;
587: if (*strptr == 'x')
588: mode |= S_IXOTH;
589: else if (*strptr == 't')
590: mode |= (S_IXOTH | S_ISVTX);
591: else if (*strptr == 'T')
592: mode |= S_ISVTX;
593: strptr++;
594: return mode;
595: }
596:
597:
598: /* parse_unix_line()
599: **
600: ** Extract the name, size, and date from an 'ls'. The function expects
601: ** the following format of the ls-line:
602: **
603: ** <permission> <nlink> <owner> [<group>] <size> <date> <filename>
604: **
605: ** The group is not always present and is therefore optional. Both owner
606: ** and group can be numbers.
607: **
608: ** Returns YES if OK, NO on error
609: */
610: PRIVATE BOOL parse_unix_line ARGS2(char *,line, dir_file_info *,f_info)
611: {
612: char *column;
613: char *strptr;
614: int ival;
615: unsigned long lval;
616: if (!line || !*line || !f_info)
617: return NO;
618:
619: if ((column = strtok(line, " ")) == NULL) /* Permissions */
620: return NO;
621: f_info->f_mode = HTFTPFilePerm(column);
622: if ((column = strtok(NULL, " ")) == NULL) /* Links */
623: return NO;
624: if (sscanf(column, "%d", &ival) == 1)
625: f_info->f_nlink = ival;
626: if ((column = strtok(NULL, " ")) == NULL) /* Owner */
627: return NO;
628: StrAllocCopy(f_info->f_uid, column);
629: if ((column = strtok(NULL, " ")) == NULL) /* Group and/or Size */
630: return NO;
631: if (sscanf(column, "%lu", &lval) != 1) {
632: StrAllocCopy(f_info->f_gid, column);
633: if ((column = strtok(NULL, " ")) == NULL)
634: return NO;
635: if (sscanf(column, "%lu", &lval) == 1)
636: f_info->f_size = lval;
637: } else { /* Group can be a number! */
638: strptr = column+strlen(column)+1;
639: while (*strptr++ == ' ');
640: if (isdigit(*--strptr)) { /* Month can't start with a digit */
641: StrAllocCopy(f_info->f_gid, column);
642: if ((column = strtok(NULL, " ")) == NULL)
643: return NO;
644: if (sscanf(column, "%lu", &lval) == 1)
645: f_info->f_size = lval;
646: } else {
1.23 frystyk 647: StrAllocCopy(f_info->f_gid, "");
1.22 frystyk 648: f_info->f_size = lval;
649: }
650: }
651: column = column+strlen(column)+1;
652: while (*column++ == ' ');
653: strptr = --column+12; /* Find the date column */
654: *strptr++ = '\0';
1.23 frystyk 655: if ((f_info->f_mtime = HTStrpTime(column)) == (time_t) 0)
1.22 frystyk 656: return NO;
657: while (*strptr++ == ' '); /* Spool to filename */
658: if ((f_info->f_mode & S_IFMT) == S_IFLNK) { /* Strip any '->' */
659: char *link = strstr(strptr-1, " -> ");
660: if (link)
661: *link = '\0';
662: }
663: StrAllocCopy(f_info->f_name, --strptr);
664: return YES; /* We have a full structure! */
665: }
666:
667:
668: /* parse_vms_line()
669: **
670: ** Format the name, date, and size from a VMS LIST line
671: ** into the dir_file_info structure
672: **
1.23 frystyk 673: ** BUGS: Group, user and permissions are not parsed!
674: **
1.22 frystyk 675: ** Returns YES if OK, NO on error
676: */
677: PRIVATE BOOL parse_vms_line ARGS2(char *, line, dir_file_info *, f_info)
678: {
679: int i, j, ialloc;
680: char *cp, *cpd, *cps, *cdir, *sp = " ";
681:
682: /** Get rid of information lines by making them blank too **/
683: /** Valid lines have the semi-colon version number token **/
684: if (!line || !*line || !f_info || (cp = strchr(line, ';')) == NULL) {
685: return NO;
686: }
687:
688: /** Cut out file or directory name at VMS version number **/
689: *cp++ ='\0';
690: StrAllocCopy(f_info->f_name,line);
691:
692: /** Cast VMS file and directory names to lowercase **/
693: for (i=0; f_info->f_name[i]; i++)
694: f_info->f_name[i] = tolower(f_info->f_name[i]);
695:
696: /** Uppercase terminal .z's or _z's **/
697: if ((--i > 2) && f_info->f_name[i] == 'z' &&
698: (f_info->f_name[i-1] == '.' || f_info->f_name[i-1] == '_'))
699: f_info->f_name[i] = 'Z';
700:
701: /* Trim off VMS directory extensions */
702: if ((cdir = strstr(f_info->f_name, ".dir")) != NULL) { /* Strip any .dir */
703: f_info->f_mode = S_IFMT & S_IFDIR;
704: *cdir = '\0';
705: } else
706: f_info->f_mode = S_IFMT & S_IFREG;
707:
708: /** Convert any tabs in rest of line to spaces **/
709: cps = cp-1;
710: while ((cps=strchr(cps+1, '\t')) != NULL)
711: *cps = ' ';
712:
713: /** Collapse serial spaces **/
714: i = 0; j = 1;
715: cps = cp;
716: while (cps[j] != '\0') {
717: if (cps[i] == ' ' && cps[j] == ' ')
718: j++;
719: else
720: cps[++i] = cps[j++];
721: }
722: cps[++i] = '\0';
723:
724: /** Track down the date **/
725: if ((cpd=strchr(cp, '-')) != NULL) {
1.24 luotonen 726: if ((int)strlen(cpd) > 9 && isdigit(*(cpd-1)) &&
1.22 frystyk 727: isalpha(*(cpd+1)) && *(cpd+4) == '-') {
1.23 frystyk 728: if ((f_info->f_mtime = HTVMSStrpTime(cpd-2)) == (time_t) 0)
1.22 frystyk 729: return NO;
730: }
731: }
732:
733: /** Track down the size **/
734: if ((cpd = strchr(cp, '/')) != NULL) {
735: /* Appears be in used/allocated format */
736: cps = cpd;
737: while (isdigit(*(cps-1)))
738: cps--;
739: if (cps < cpd)
740: *cpd = '\0';
741: f_info->f_size = atoi(cps);
742: cps = cpd+1;
743: while (isdigit(*cps))
744: cps++;
745: *cps = '\0';
746: ialloc = atoi(cpd+1);
747: /* Check if used is in blocks or bytes */
748: if (f_info->f_size <= ialloc)
749: f_info->f_size *= 512;
750: }
751: else if ((cps=strtok(cp, sp)) != NULL) {
752: /* We just initialized on the version number */
753: /* Now let's hunt for a lone, size number */
754: while ((cps=strtok(NULL, sp)) != NULL) {
755: cpd = cps;
756: while (isdigit(*cpd))
757: cpd++;
758: if (*cpd == '\0') {
759: /* Assume it's blocks */
760: f_info->f_size = atoi(cps) * 512;
761: break;
762: }
763: }
764: }
765: return YES; /* We have a full structure! */
766: }
767:
768:
769: /* parse_dir_entry()
770: **
771: ** Given a line of LIST/NLST output in entry, return results
772: ** and a file/dir name in f_info struct
773: **
1.23 frystyk 774: ** If first_entry is true, this is the first name in a directory.
1.22 frystyk 775: ** Returns YES if OK, NO on error
776: */
1.23 frystyk 777: PRIVATE BOOL parse_dir_entry ARGS4(ftp_data_info *, data, char *, entry,
778: BOOL, first_entry, dir_file_info *, f_info)
1.22 frystyk 779: {
780: BOOL status = YES;
1.23 frystyk 781: switch (data->ctrl->server) {
1.22 frystyk 782: case UNIX_SERVER:
783: case PETER_LEWIS_SERVER:
784: case MACHTEN_SERVER:
1.32 frystyk 785: case WINDOWS_NT: /* This is an experiment */
1.22 frystyk 786: /* Interpret and edit LIST output from Unix server */
1.23 frystyk 787: if (first_entry) {
788: if (data->ctrl->unsure_type == YES &&
789: strncmp(entry, "total ", 6) &&
790: (strstr(entry, "not available") != NULL)) {
1.22 frystyk 791: /* this isn't really a unix server! */
1.23 frystyk 792: if (TRACE)
793: fprintf(stderr, "FTP......... No, this isn't a UNIX server anyway :-(\n");
794: data->ctrl->server = GENERIC_SERVER;
1.22 frystyk 795: }
1.23 frystyk 796: /* We might as well say that it is not unsure any more, as we
797: can't (or don't) do anything about it, */
798: data->ctrl->unsure_type = NO;
799: status = NO;
800: } else
801: status = parse_unix_line(entry, f_info);
1.22 frystyk 802: break;
803:
804: case VMS_SERVER:
805: /* Interpret and edit LIST output from VMS server */
806: /* and convert information lines to zero length. */
807: status = parse_vms_line(entry, f_info);
808: break;
809:
810: case CMS_SERVER:
811: /* Can't be directory... "entry" already equals the correct f_name */
812: StrAllocCopy(f_info->f_name, entry);
813: f_info->f_mode = S_IFMT & S_IFREG;
814: break;
815:
816: case NCSA_SERVER:
817: case TCPC_SERVER:
818: /* Directories identified by trailing "/" characters */
819: StrAllocCopy(f_info->f_name, entry);
820: {
821: int len = strlen(entry);
822: if (*(entry+len-1) == '/') {
823: *(entry+len-1) = '\0';
824: f_info->f_mode = S_IFMT & S_IFDIR;
825: } else {
826: f_info->f_mode = S_IFMT & S_IFREG;
827: }
828: }
829: break;
830:
831: default:
832: /* We cant tell if it is a directory since we only did an NLST :-( */
833: StrAllocCopy(f_info->f_name, entry);
834: f_info->f_mode = S_IFMT & S_IFREG;
835: break;
836: }
837: return status;
838: }
1.1 timbl 839:
840:
1.23 frystyk 841: PRIVATE int HTFTP_get_dir_string ARGS2(ftp_data_info *, data,
842: dir_file_info *, f_info)
1.21 frystyk 843: {
1.23 frystyk 844: int status = 1;
1.22 frystyk 845: int ch; /* Must be int in order to contain EOF */
1.23 frystyk 846: BOOL got_line = NO;
1.22 frystyk 847: static BOOL first = YES; /* Is it the first time through? */
1.23 frystyk 848: static HTInputSocket *isoc;
1.22 frystyk 849: HTChunk *chunk = HTChunkCreate(128);
850:
1.23 frystyk 851: if (first == YES)
852: isoc = HTInputSocket_new(data->socket); /* Set up buffering */
853: do { /* Until we have a nice line */
854: while ((ch = HTInputSocket_getCharacter(isoc)) >= 0) {
855: if (ch == CR || ch == LF) { /* Terminator? */
1.32 frystyk 856: first = NO;
1.23 frystyk 857: if (chunk->size != 0) { /* got some text */
858: if (data->ctrl->server == VMS_SERVER) {
859: /* Deal with MultiNet's wrapping of long lines - F.M.*/
860: if (isdigit(*(chunk->data+chunk->size-1)))
861: continue;
862: }
863: HTChunkTerminate(chunk);
864: if (parse_dir_entry(data, chunk->data, first, f_info)) {
865: got_line = YES;
866: break;
867: } else {
868: HTChunkClear(chunk);
1.22 frystyk 869: }
870: }
1.23 frystyk 871: } else
872: HTChunkPutc(chunk, ch);
1.21 frystyk 873: }
1.23 frystyk 874: } while (got_line == NO && ch >= 0);
875: if (ch < 0) {
876: first = YES;
877: status = (ch == EOF) ? 0 : ch;
878: }
879: if (first) {
880: HTInputSocket_free(isoc);
881: isoc = NULL;
882: }
1.22 frystyk 883: HTChunkFree(chunk);
1.21 frystyk 884: return status;
885: }
886:
1.22 frystyk 887: /* ------------------------------------------------------------------------- */
1.23 frystyk 888: /* FTP Client Functions for managing control and data connections */
1.22 frystyk 889: /* ------------------------------------------------------------------------- */
890:
1.23 frystyk 891: /* HTFTP_send_cmd
1.22 frystyk 892: **
1.23 frystyk 893: ** This function sends a command through the control connection
894: ** specified. The Telnet terminating end of line code <CRLF> is
895: ** appended automaticly. The parameter argument is ignored if NULL.
1.1 timbl 896: **
1.23 frystyk 897: ** Returns 0 on OK, else -1 but does NOT close the connection
1.1 timbl 898: */
1.23 frystyk 899: PRIVATE int HTFTP_send_cmd ARGS3(ftp_ctrl_info *, ctrl_info, char *, cmd,
900: char *, pars)
1.1 timbl 901: {
1.23 frystyk 902: char *command;
903: if (!ctrl_info && ctrl_info->socket < 0) {
904: if (TRACE)
905: fprintf(stderr, "HTFTP_send_cmd: Invalid socket\n");
906: return -1;
907: }
908: if ((command = (char *) malloc(strlen(cmd) + (pars ? strlen(pars)+1 : 0) +
909: 2 + 1)) == NULL)
910: outofmem(__FILE__, "HTFTP_send_cmd");
911: if (pars && *pars)
912: sprintf(command, "%s %s%c%c", cmd, pars, CR, LF);
913: else
914: sprintf(command, "%s%c%c", cmd, CR, LF);
915: if (TRACE) {
916: if (!strcasecomp(cmd, "pass"))
917: fprintf(stderr, "FTP Tx...... PASS ********\n");
1.22 frystyk 918: else
1.23 frystyk 919: fprintf(stderr, "FTP Tx...... %s", command);
920: }
921: #ifdef NOT_ASCII
922: {
923: char *sp;
924: for (sp = command; *sp; sp++) {
925: *sp = TOASCII(*sp);
926: }
927: }
928: #endif
929: {
930: int status = NETWRITE(ctrl_info->socket, command,
931: (int) strlen(command));
932: if (status < 0) {
933: if (TRACE)
1.33 frystyk 934: fprintf(stderr, "FTP......... Error sending command: %s",
935: command);
936: HTInetStatus("write");
1.23 frystyk 937: free(command);
938: return -1;
939: }
940: free(command);
941: return 0;
942: }
943: }
1.1 timbl 944:
945:
1.23 frystyk 946: /* HTFTP_get_response
1.8 timbl 947: **
1.23 frystyk 948: ** This function gets the response from the net to the control connection
949: ** specified. If text is not NULL, the response text is put into this
950: ** chunk. In case of OK, the freeing is then left to the callee. The
951: ** response is read until a <LF> is encountered, since not all servers
952: ** use a full telnet <CRLF> code.
1.1 timbl 953: **
1.23 frystyk 954: ** Returns the 3 digit return code on OK, else -1 but does NOT close
955: ** the control connection.
1.1 timbl 956: */
1.23 frystyk 957: PRIVATE int HTFTP_get_response ARGS2(ftp_ctrl_info *, ctrl_info,
958: HTChunk **, text)
1.1 timbl 959: {
1.23 frystyk 960: int result; /* Three-digit decimal code */
961: int offset = 0; /* Offset for each newline in response */
962: BOOL first_line = YES;
963: int ch;
964: HTChunk *chunk = HTChunkCreate(128);
965:
966: if (!ctrl_info && ctrl_info->socket < 0) {
967: if (TRACE)
968: fprintf(stderr, "HTFTP_get_response: Invalid socket\n");
969: return -1;
1.1 timbl 970: }
971:
1.23 frystyk 972: /* Read response */
973: while ((ch = HTInputSocket_getCharacter(ctrl_info->isoc)) >= 0) {
974: if (ch == LF) {
975: int tmpres;
976: char cont;
977: if (first_line == YES) {
978: if (sscanf(chunk->data, "%d%c", &result, &cont) < 2) {
979: if (TRACE)
980: fprintf(stderr,
981: "FTP Rx...... `%s\' - no code found?\n",
982: chunk->data);
1.31 frystyk 983: HTChunkFree(chunk);
1.23 frystyk 984: return -1;
985: }
986: if (cont == '-') {
987: HTChunkPutc(chunk, '\n');
988: offset = chunk->size; /* Remember offset */
989: first_line = NO;
990: } else {
991: HTChunkTerminate(chunk);
992: break;
993: }
994: } else {
1.28 frystyk 995: if (isdigit(*(chunk->data+offset)) &&
996: sscanf(chunk->data+offset, "%d%c", &tmpres, &cont) == 2 &&
1.23 frystyk 997: tmpres == result && cont == ' ') {
998: HTChunkTerminate(chunk);
999: break;
1000: } else {
1001: HTChunkPutc(chunk, '\n');
1002: offset = chunk->size; /* Update offset */
1003: }
1.1 timbl 1004: }
1.23 frystyk 1005: } else
1006: HTChunkPutc(chunk, (char) ch);
1.1 timbl 1007: }
1.23 frystyk 1008: if (!chunk->size || ch < 0) { /* No response read? */
1.31 frystyk 1009: if (TRACE) fprintf(stderr, "FTP Rx...... No response?\n");
1.23 frystyk 1010: HTChunkFree(chunk);
1.1 timbl 1011: return -1;
1012: }
1.23 frystyk 1013: if (TRACE) fprintf(stderr, "FTP Rx...... %s\n", chunk->data);
1014: if (!text) /* Response text not wanted so we free the chunk */
1015: HTChunkFree(chunk);
1016: else {
1017: if (*text) /* Free old value, if any */
1018: HTChunkFree(*text);
1019: *text = chunk;
1020: }
1021: return result;
1.1 timbl 1022: }
1023:
1024:
1.23 frystyk 1025:
1026: /* HTFTP_close_data_con
1027: ** Closes the data connection and frees memory
1028: ** Returns 0 if OK, -1 on error
1.22 frystyk 1029: */
1.23 frystyk 1030: PRIVATE int HTFTP_close_data_con ARGS1(ftp_data_info *, data)
1.22 frystyk 1031: {
1.23 frystyk 1032: int status = 0;
1033: if (data) {
1034: if (data->socket >= 0) {
1035: if (TRACE)
1036: fprintf(stderr, "FTP......... Closing data socket %d\n",
1037: data->socket);
1038: if ((status = NETCLOSE(data->socket)) < 0)
1039: HTInetStatus("close data socket");
1040: #ifdef REPEAT_LISTEN
1041: if (master_socket == data->socket)
1042: master_socket = -1;
1043: #endif
1044: }
1045: FREE(data->datatype);
1046: free(data);
1047: } else {
1048: if (TRACE) fprintf(stderr, "HTFTP_close_data_con: bad argument!");
1049: status = -1;
1.22 frystyk 1050: }
1051: return status;
1052: }
1053:
1054:
1.23 frystyk 1055: /* HTFTP_close_ctrl_con
1056: ** Only if the control connection has no data connection(s) pending
1057: ** then it can be closed and the memory freed.
1058: ** Returns 0 if OK, -1 on error
1.1 timbl 1059: */
1.23 frystyk 1060: PRIVATE int HTFTP_close_ctrl_con ARGS1(ftp_ctrl_info *, ctrl)
1.1 timbl 1061: {
1.23 frystyk 1062: int status = 0;
1063: if (ctrl && (!ctrl->data_cons ||
1064: (ctrl->data_cons && !HTList_count(ctrl->data_cons)))) {
1065: if (TRACE)
1066: fprintf(stderr,
1067: "FTP......... Closing control socket %d\n", ctrl->socket);
1068: if (ctrl->socket >= 0) {
1069: if ((status = NETCLOSE(ctrl->socket)) < 0)
1070: HTInetStatus("close control socket");
1071: }
1072: if (ctrl->isoc)
1073: HTInputSocket_free(ctrl->isoc);
1074: FREE(ctrl->location);
1075: if (ctrl->user) {
1076: FREE(ctrl->user->domain);
1077: FREE(ctrl->user->id);
1078: FREE(ctrl->user->passwd);
1079: free(ctrl->user);
1080: }
1081: if (ctrl->welcome)
1082: HTChunkFree(ctrl->welcome);
1.25 frystyk 1083: if (ctrl->reply)
1084: HTChunkFree(ctrl->reply);
1.23 frystyk 1085: HTList_delete(ctrl->data_cons);
1086: free(ctrl);
1087: }
1088: return status;
1089: }
1.22 frystyk 1090:
1.1 timbl 1091:
1.23 frystyk 1092: /* HTFTP_abort_ctrl_con
1093: ** Closes the control connection without looking if any data connections
1094: ** are pending => they are all removed, so be careful!
1095: ** Returns 0 if OK, -1 on error
1096: */
1097: PRIVATE int HTFTP_abort_ctrl_con ARGS1(ftp_ctrl_info *, ctrl)
1098: {
1099: int status = 0;
1100: if (!ctrl) {
1101: if (TRACE)
1102: fprintf(stderr, "HTFTP_abort_ctrl_con called with bad argument\n");
1103: return -1;
1104: }
1105: if (TRACE) fprintf(stderr, "FTP......... Aborting control socket %d\n",
1106: ctrl->socket);
1.1 timbl 1107:
1.23 frystyk 1108: /* Close any pending data connections */
1109: if (ctrl->data_cons && HTList_count(ctrl->data_cons)) {
1110: HTList *cur = ctrl->data_cons;
1111: ftp_data_info *pres;
1112: while ((pres = (ftp_data_info *) HTList_nextObject(cur))) {
1113: HTFTP_close_data_con(pres);
1114: }
1115: HTList_delete(ctrl->data_cons);
1116: ctrl->data_cons = NULL;
1117: }
1.1 timbl 1118:
1.23 frystyk 1119: /* If a session is going on, the control connections are closed later */
1120: if (!session) {
1121: if (ctrl->socket >= 0) {
1122: if ((status = NETCLOSE(ctrl->socket)) < 0)
1123: HTInetStatus("abot control socket");
1124: }
1125: if (ctrl->isoc)
1126: HTInputSocket_free(ctrl->isoc);
1127: FREE(ctrl->location);
1128: if (ctrl->user) {
1129: FREE(ctrl->user->domain);
1130: FREE(ctrl->user->id);
1131: FREE(ctrl->user->passwd);
1132: free(ctrl->user);
1133: }
1134: if (ctrl->welcome)
1135: HTChunkFree(ctrl->welcome);
1.25 frystyk 1136: if (ctrl->reply)
1137: HTChunkFree(ctrl->reply);
1.23 frystyk 1138: free(ctrl);
1.1 timbl 1139: }
1.23 frystyk 1140: return status;
1141: }
1.1 timbl 1142:
1143:
1.23 frystyk 1144: /* HTFTP_parse_login
1145: **
1146: ** Scan 'login' part of URL for portnumber, uid and passwd. The
1147: ** expected format is [user[:password]@]host[:port]. The 'domain' field
1148: ** in the user structure is always filled out together with the
1149: ** serv_port. The rest is optional.
1150: **
1151: ** Returns YES if anything BUT the domain and serv_port is specified,
1152: ** else NO
1.1 timbl 1153: */
1.23 frystyk 1154: PRIVATE BOOL HTFTP_parse_login ARGS3(char *, url, user_info *, user,
1155: u_short *, serv_port)
1156: {
1157: BOOL status = NO;
1158: char *login = HTParse(url, "", PARSE_HOST);
1159: char *host = strrchr(login, '@');
1160:
1161: if (host) { /* Uid and/or passwd specified */
1162: char *uid = login;
1163: char *passwd;
1164: FREE(user->id); /* Skip old values */
1165: FREE(user->passwd);
1166: *host++ = '\0';
1167: if ((passwd = strrchr(uid, ':')) != NULL) { /* Passwd specified */
1168: *passwd++ = '\0';
1169: if (passwd-1 > uid) { /* Passwd AND uid specified */
1170: StrAllocCopy(user->passwd, passwd);
1171: }
1172: }
1173: StrAllocCopy(user->id, uid);
1174: status = YES;
1.22 frystyk 1175: } else {
1.23 frystyk 1176: host = login;
1.22 frystyk 1177: }
1.23 frystyk 1178: {
1179: char *portstr;
1180: if ((portstr = strrchr(host, ':')) != NULL) { /* Port specified */
1181: char *endp = NULL;
1182: *portstr++ = '\0';
1183: *serv_port = (u_short) strtol(portstr, &endp, 10);
1184: if (endp && *endp) /* If portstr is not good, use default port */
1185: *serv_port = (u_short) IPPORT_FTP;
1186: }
1.22 frystyk 1187: }
1.23 frystyk 1188: StrAllocCopy(user->domain, host); /* This is what's left */
1189: free(login);
1190: return status;
1.22 frystyk 1191: }
1.1 timbl 1192:
1193:
1.23 frystyk 1194: /* HTFTP_parse_datatype
1.1 timbl 1195: **
1.23 frystyk 1196: ** Scan 'ftptype' part of URL for the data type with parameters and
1197: ** returns the result in accordance with the FTP standard. If nothing is
1198: ** found then datatype = NULL.
1.1 timbl 1199: **
1.23 frystyk 1200: ** Returns YES if type is found, else NO
1.1 timbl 1201: */
1.23 frystyk 1202: PRIVATE BOOL HTFTP_parse_datatype ARGS2(char *, url, char **, datatype)
1.1 timbl 1203: {
1.23 frystyk 1204: BOOL retour = NO;
1205: char *path = HTParse(url, "", PARSE_PATH);
1206: char *type = strrchr(path, ';');
1207: char dtype[6];
1208: char *tptr = dtype;
1209:
1210: if (type && !strncasecomp(++type, "type=", 5)) { /* type specified */
1211: *tptr++ = toupper(*(type+5)); /* Look at the type-code */
1212: if (*dtype == 'L') { /* We must look for a byte_size */
1213: int cnt;
1214: *tptr++ = ' ';
1215: for (cnt=0; cnt<3 && *(type+6+cnt); cnt++) /* Max 3 digits */
1216: *tptr++ = *(type+6+cnt);
1217: } else if (*dtype == 'A' || *dtype == 'E') {
1218: *tptr++ = ' ';
1219: *tptr++ = toupper(*(type+6)); /* Get form-code */
1220: }
1221: *tptr = '\0';
1222: StrAllocCopy(*datatype, dtype);
1223: if (TRACE)
1224: fprintf(stderr, "FTP......... Datatype found: `%s\'\n", *datatype);
1225: retour = YES;
1226: }
1227: free(path);
1228: return retour;
1.1 timbl 1229: }
1230:
1231:
1.23 frystyk 1232: /* HTFTP_init_con
1.1 timbl 1233: **
1.23 frystyk 1234: ** This function returns a control connection structure linked with a
1235: ** data connection structure. The control connection might already be
1236: ** open if HTFTPReuseCtrlCon == YES, but that is indicated in the state
1237: ** variable. ctrl->user->domain is always filled out but id and passwd
1238: ** are optional.
1239: ** If error, NULL is returned.
1.1 timbl 1240: */
1.29 frystyk 1241: PRIVATE ftp_ctrl_info *HTFTP_init_con ARGS2(HTRequest *, req, char *, url)
1.1 timbl 1242: {
1.23 frystyk 1243: int status;
1244: BOOL use_url = NO; /* YES if uid and passwd are specified in the URL */
1245: u_short serv_port = IPPORT_FTP; /* Might be changed from URL */
1.1 timbl 1246:
1.23 frystyk 1247: ftp_ctrl_info *ctrl;
1248: ftp_data_info *data;
1249: user_info user; /* Contains userid, passwd etc. from URL */
1250:
1251: if (!url || !*url) {
1252: if (TRACE)
1253: fprintf(stderr, "HTFTP_get_connection: Bad server address!\n");
1254: return NULL;
1255: }
1256:
1257: /* Initiate new data connection structure */
1258: if ((data = (ftp_data_info *) calloc(1, sizeof(ftp_data_info))) == NULL)
1259: outofmem(__FILE__, "HTFTP_get_ctrl_con");
1260: data->socket = -1; /* Illigal socket number */
1.33 frystyk 1261: data->passive = 0; /* We do the active open pr default */
1.23 frystyk 1262:
1263: /* Scan URL for uid, pw and portnumber */
1.25 frystyk 1264: memset((void *) &user, '\0', sizeof(user_info));
1.23 frystyk 1265: use_url = HTFTP_parse_login(url, &user, &serv_port);
1266:
1267: {
1.25 frystyk 1268: char *filename = HTParse(url, "", PARSE_PATH+PARSE_PUNCTUATION);
1.23 frystyk 1269: char *strptr;
1270:
1271: /* Check if file name is a directory */
1272: if (!*(strptr = filename) ||
1273: *(strptr = filename+strlen(filename)-1) == '/') {
1274: data->directory = YES;
1275: } else {
1276: /* If data type is not specified in URL let's find it ourselves. */
1277: HTUnEscape(filename);
1.34 ! luotonen 1278: data->fileformat = HTFileFormat(filename,
! 1279: &req->content_encoding,
! 1280: &req->content_language);
1.23 frystyk 1281: if (HTFTP_parse_datatype(filename, &data->datatype) != YES) {
1.34 ! luotonen 1282: if ((req->content_encoding != HTAtom_for("8bit") &&
! 1283: req->content_encoding != HTAtom_for("7bit"))) {
1.23 frystyk 1284: if (TRACE)
1.34 ! luotonen 1285: fprintf(stderr, "FTP......... Binary data mode\n");
1.23 frystyk 1286: StrAllocCopy(data->datatype, "I");
1287: }
1288: } else {
1289: /* Chop off data type */
1290: strptr = strrchr(filename, ';');
1291: *strptr = '\0';
1292: }
1293: }
1294: FREE(filename);
1295: }
1296:
1297: /* Look if control connection already exists else generate new one */
1298: if (session) {
1299: BOOL found = NO;
1300: HTList *cur = session;
1301: struct sockaddr_in sock_addr;
1302: char *host;
1303:
1304: /* if theres an @ then use the stuff after it as a hostname */
1305: {
1306: char *fullhost = HTParse(url, "", PARSE_HOST);
1307: char *at_sign;
1308: if((at_sign = strchr(fullhost, '@')) != NULL)
1309: host = at_sign+1;
1310: else
1311: host = fullhost;
1312: }
1313:
1314: /* Set up defaults: */
1.25 frystyk 1315: memset((void *) &sock_addr, '\0', sizeof(sock_addr));
1.23 frystyk 1316: sock_addr.sin_family = AF_INET;
1317: sock_addr.sin_port = htons(serv_port);
1318:
1319: /* Get node name */
1320: if (HTParseInet(&sock_addr, host)) {
1321: if (TRACE) fprintf(stderr,
1322: "FTP......... Can't locate remote host `%s\'\n", host);
1323: FREE(user.domain);
1324: FREE(user.id);
1325: FREE(user.passwd);
1326: free(host);
1327: return NULL;
1328: }
1329: {
1330: /* Check if host, port and user info is the same */
1331: u_long new_node = ntohl(sock_addr.sin_addr.s_addr);
1332: while ((ctrl = (ftp_ctrl_info *) HTList_nextObject(cur))) {
1333: if (new_node==ctrl->serv_node && serv_port==ctrl->serv_port) {
1334: if ((user.id && strcmp(user.id, ctrl->user->id)) ||
1335: (user.passwd && strcmp(user.id, ctrl->user->passwd))) {
1336: found = NO;
1337: } else {
1338: found = YES;
1339: break;
1340: }
1341: }
1342: }
1343: }
1344: FREE(host);
1345: if (found) {
1346: if (TRACE) fprintf(stderr,
1347: "FTP......... Already have connection for %d.%d.%d.%d. on port %d, socket %d at location `%s\'\n",
1348: (int)*((unsigned char *)(&ctrl->serv_node)+0),
1349: (int)*((unsigned char *)(&ctrl->serv_node)+1),
1350: (int)*((unsigned char *)(&ctrl->serv_node)+2),
1351: (int)*((unsigned char *)(&ctrl->serv_node)+3),
1352: ctrl->serv_port,
1353: ctrl->socket,
1354: ctrl->location);
1355: data->ctrl = ctrl; /* Link them together */
1356: HTList_addObject(ctrl->data_cons, (void *) data); /* Add to list */
1357: FREE(user.domain);
1358: FREE(user.id);
1359: FREE(user.passwd);
1360: return ctrl; /* This should return the found structure */
1361: } else {
1362: if (TRACE)
1363: fprintf(stderr, "FTP......... No existing connection found, so I build a new\n");
1364: }
1365: }
1.1 timbl 1366:
1.23 frystyk 1367: /* Set up data structure for control connection */
1368: if ((ctrl = (ftp_ctrl_info *) calloc(1, sizeof(ftp_ctrl_info))) == NULL ||
1369: (ctrl->user = (user_info *) calloc(1, sizeof(user_info))) == NULL)
1370: outofmem(__FILE__, "HTFTP_init_con");
1371: ctrl->serv_port = serv_port;
1372: ctrl->socket = -1; /* Illigal socket number */
1373: StrAllocCopy(ctrl->location, ""); /* Default is root */
1374: ctrl->server = UNKNOWN;
1375: ctrl->unsure_type = YES;
1376: ctrl->use_list = NO;
1.31 frystyk 1377: ctrl->state = FTP_IDLE;
1.23 frystyk 1378: if (session)
1379: HTList_addObject(session, (void *) ctrl);
1380: data->ctrl = ctrl; /* Link them together */
1381: ctrl->data_cons = HTList_new();
1382: HTList_addObject(ctrl->data_cons, (void *) data); /* First element */
1383:
1384: /* Initialize user info */
1385: if (HTFTPUserInfo && !old_user) { /* If first time */
1386: if ((old_user = (user_info *) calloc(1, sizeof(user_info))) == NULL)
1387: outofmem(__FILE__, "HTFTP_init_con");
1388: StrAllocCopy(old_user->domain, "");/* Can't strcmp with NULL, can I? */
1389: }
1390: if (use_url) {
1391: StrAllocCopy(ctrl->user->domain, user.domain);
1392: StrAllocCopy(ctrl->user->id, user.id);
1393: if (user.passwd) {
1394: StrAllocCopy(ctrl->user->passwd, user.passwd);
1395: }
1396: } else if (HTFTPUserInfo && !strcmp(old_user->domain, user.domain)) {
1397: StrAllocCopy(ctrl->user->domain, user.domain);
1398: if (old_user->id) {
1399: StrAllocCopy(ctrl->user->id, old_user->id);
1400: if (old_user->passwd)
1401: StrAllocCopy(ctrl->user->passwd, old_user->passwd);
1402: }
1403: } else {
1404: char *uid = getenv("USER");
1405: StrAllocCopy(ctrl->user->domain, user.domain);
1406: StrAllocCopy(ctrl->user->id, "anonymous");
1407: if (uid)
1408: StrAllocCopy(ctrl->user->passwd, uid);
1409: else
1410: StrAllocCopy(ctrl->user->passwd, WWW_FTP_CLIENT);
1411: StrAllocCat(ctrl->user->passwd, "@");
1412: }
1413: FREE(user.domain);
1414: FREE(user.id);
1415: FREE(user.passwd);
1416:
1417: /* Now get ready for a connect */
1418: if (TRACE) fprintf(stderr, "FTP......... Looking for `%s\'\n", url);
1.33 frystyk 1419: if ((status = HTDoConnect (req, url, serv_port, &ctrl->socket,
1.23 frystyk 1420: &ctrl->serv_node)) < 0)
1421: {
1422: if (TRACE)
1423: fprintf(stderr, "HTFTP_init_con: Connection not established!\n");
1424: HTFTP_abort_ctrl_con(ctrl);
1425: return NULL;
1426: }
1427: ctrl->isoc = HTInputSocket_new(ctrl->socket); /* buffering */
1.1 timbl 1428:
1.23 frystyk 1429: if (TRACE)
1430: fprintf(stderr, "FTP......... Control connected, socket %d\n",
1431: ctrl->socket);
1432: return ctrl;
1433: }
1434:
1435:
1436: #ifdef LISTEN
1437: /* Open a master socket for listening on
1438: ** -------------------------------------
1439: **
1440: ** When data is transferred, we open a port, and wait for the server to
1441: ** connect with the data.
1442: **
1443: ** On entry,
1444: ** master_socket Must be negative if not set up already.
1445: ** On exit,
1446: ** Returns The listening data socket if OK
1447: ** Less than zero if error.
1448: ** master_socket is socket number if good, else negative.
1449: ** port_number is valid if good.
1450: */
1451: PRIVATE BOOL get_listen_socket ARGS1(ftp_data_info *, data)
1452: {
1453: struct sockaddr_in local_addr; /* Binary network address */
1454: int status = -1;
1455:
1456: #ifdef REPEAT_LISTEN
1457: if (master_socket >= 0) { /* Done already */
1458: data->socket = master_socket;
1459: if (TRACE)
1460: fprintf(stderr, "FTP......... Reusing passive data socket: %d\n",
1461: data->socket);
1462: return data->socket;
1463: }
1.33 frystyk 1464: #endif /* REPEAT_LISTEN */
1.1 timbl 1465:
1.23 frystyk 1466: /* Create internet socket */
1467: if ((data->socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
1468: return HTInetStatus("socket for ftp data");
1469: if (TRACE)
1.32 frystyk 1470: fprintf(stderr, "HTListen.... Created socket number %d\n",
1.23 frystyk 1471: data->socket);
1.1 timbl 1472:
1.23 frystyk 1473: /* Search for a free port. */
1.25 frystyk 1474: memset((void *) &local_addr, '\0', sizeof(local_addr));
1.23 frystyk 1475: local_addr.sin_family = AF_INET; /* Family = internet, host order */
1476: local_addr.sin_addr.s_addr = htonl(INADDR_ANY); /* For multi homed hosts */
1477:
1478: /* Inherit the local address information from the control socket */
1479: {
1480: int addr_size = sizeof(local_addr);
1481: if (getsockname(data->ctrl->socket, (struct sockaddr *)
1482: &local_addr, &addr_size) < 0) {
1483: status = HTInetStatus("getsockname");
1484: goto errorfin;
1485: }
1486: }
1487:
1.1 timbl 1488: #ifdef POLL_PORTS
1489: {
1490: unsigned short old_port_number = port_number;
1.23 frystyk 1491: for (port_number=old_port_number+1;;port_number++) {
1.1 timbl 1492: if (port_number > LAST_TCP_PORT)
1493: port_number = FIRST_TCP_PORT;
1494: if (port_number == old_port_number) {
1.23 frystyk 1495: if (TRACE)
1496: fprintf(stderr, "FTP......... No data port available.\n");
1497: goto errorfin;
1.1 timbl 1498: }
1.23 frystyk 1499: local_addr.sin_port = htons(port_number);
1500:
1501: /* The socket address is casted to generic sockaddr */
1502: if (bind(data->socket, (struct sockaddr *) &local_addr,
1503: sizeof(local_addr)) == 0)
1504: break; /* We have found a port */
1505: status = HTInetStatus("bind"); /* else, what error did we get */
1506: }
1.1 timbl 1507: }
1508: #else
1509: {
1.23 frystyk 1510: local_addr.sin_port = 0; /* Unspecified: please allocate */
1511:
1512: /* The socket address is casted to a generic address */
1513: if (bind(data->socket, (struct sockaddr *) &local_addr,
1514: sizeof(local_addr)) < 0) {
1515: status = HTInetStatus("bind");
1516: goto errorfin;
1517: }
1518: }
1.33 frystyk 1519: #endif /* POLL_PORTS */
1.23 frystyk 1520: /* Now we must find out who we are to tell the other guy. */
1521: {
1522: int addr_size = sizeof(local_addr);
1523: if (getsockname(data->socket, (struct sockaddr *) &local_addr,
1524: &addr_size) < 0) {
1525: status = HTInetStatus("getsockname");
1526: goto errorfin;
1527: }
1528: if (TRACE) fprintf(stderr, "FTP......... This host is `%s\'\n",
1529: HTInetString(&local_addr));
1530: }
1531: if (TRACE) fprintf(stderr, "FTP......... Bound to port %d on %s\n",
1532: (int) ntohs(local_addr.sin_port),
1533: HTInetString(&local_addr));
1534:
1535: /* this_addr is a static global, we can refer to later */
1536: if (!this_addr && (this_addr = (char *) malloc(24)) == NULL)
1537: outofmem(__FILE__, "get_listen_socket");
1538: {
1539: u_long addr = ntohl(local_addr.sin_addr.s_addr);
1540: u_short port = ntohs(local_addr.sin_port);
1541: sprintf(this_addr, "%d,%d,%d,%d,%d,%d",
1542: (int)*((unsigned char *)(&addr)+0),
1543: (int)*((unsigned char *)(&addr)+1),
1544: (int)*((unsigned char *)(&addr)+2),
1545: (int)*((unsigned char *)(&addr)+3),
1546: (int)*((unsigned char *)(&port)+0),
1547: (int)*((unsigned char *)(&port)+1));
1548: }
1549:
1550: /* Inform TCP that we will accept connections. Backlog is 1 as we only
1551: want (and expect) one connection. If a 3rd host makes a connect
1552: to this port, we have problems! */
1553: if (listen(data->socket, 1) < 0) {
1554: status = HTInetStatus("listen");
1555: goto errorfin;
1556: }
1557: if (TRACE) fprintf(stderr,
1558: "FTP......... Data socket number %d listening\n",
1559: data->socket);
1.1 timbl 1560:
1561: #ifdef REPEAT_LISTEN
1.23 frystyk 1562: master_socket = data->socket; /* Update master_socket */
1.33 frystyk 1563: #endif /* REPEAT_LISTEN */
1.23 frystyk 1564: return data->socket; /* Good */
1565:
1566: errorfin:
1567: NETCLOSE(data->socket);
1568: data->socket = -1;
1569: return -1;
1570: }
1.33 frystyk 1571: #endif /* LISTEN */
1.23 frystyk 1572:
1573:
1574: /* HTFTP_login
1575: **
1576: ** This function makes a login to a ftp-server. It takes the user name
1577: ** and passwd specified in ctrl->user and if that fails or an additional
1578: ** account is needed, the user is prompted. As it is difficult, when
1579: ** the server sends it's welcome message, we receive them all and choose
1580: ** the longest.
1581: **
1582: ** Returns -2 on ERROR, -1 on FAILURE, 0 on SUCCESS.
1.1 timbl 1583: */
1.23 frystyk 1584: PRIVATE int HTFTP_login ARGS1(ftp_ctrl_info *, ctrl)
1585: {
1586: enum _state {
1587: ERROR = -2,
1588: FAILURE = -1,
1589: SUCCESS = 0,
1590: BEGIN,
1591: SENT_UID,
1592: SENT_PASSWD,
1593: NEED_USER_INFO,
1594: NEED_PASSWD,
1595: NEED_ACCOUNT,
1596: SENT_ACCOUNT
1597: } state = BEGIN;
1598: BOOL asked = YES; /* Have we already asked for uid/passwd? */
1.25 frystyk 1599: int status = HTFTP_get_response(ctrl, &ctrl->reply); /* Get greeting */
1.23 frystyk 1600: if (status < 0) {
1601: if (TRACE) fprintf (stderr, "FTP......... Interrupted at beginning of login.\n");
1602: return ERROR;
1.25 frystyk 1603: } else
1604: HTFTPAddWelcome(ctrl);
1.23 frystyk 1605:
1606: /* This loop only stops if state is ERROR, FAILURE or SUCCESS */
1607: while (state > 0) {
1608: switch (state) {
1609: case BEGIN:
1610: if (!HTFTP_send_cmd(ctrl, "USER", ctrl->user->id))
1611: state = SENT_UID;
1612: else
1613: state = ERROR;
1614: break;
1615:
1616: case SENT_UID:
1.25 frystyk 1617: status = HTFTP_get_response(ctrl, &ctrl->reply);
1618: if (status/100 == 2) { /* Logged in w/o passwd! */
1.28 frystyk 1619: HTFTPAddWelcome(ctrl);
1.23 frystyk 1620: state = SUCCESS;
1.28 frystyk 1621: } else if (status/100 == 3) { /* Password demanded */
1622: HTFTPAddWelcome(ctrl);
1.23 frystyk 1623: state = NEED_PASSWD;
1.28 frystyk 1624: } else if (status == 530 && asked == YES)
1.23 frystyk 1625: state = NEED_USER_INFO; /* User unknown */
1626: else if (status/100 == 4)
1627: state = FAILURE;
1628: else
1629: state = ERROR;
1630: break;
1.1 timbl 1631:
1.23 frystyk 1632: case NEED_PASSWD:
1633: if (!ctrl->user->passwd) { /* Got to ask for it */
1634: char *prompt = NULL;
1635: StrAllocCopy(prompt, "Enter password for user: ");
1636: StrAllocCat(prompt, ctrl->user->id);
1637: StrAllocCat(prompt, "@");
1638: StrAllocCat(prompt, ctrl->user->domain);
1639: StrAllocCat(prompt, ": ");
1640: if ((ctrl->user->passwd = HTPromptPassword(prompt)) == NULL) {
1641: state = ERROR;
1642: free(prompt);
1643: break;
1644: }
1645: free(prompt);
1646: }
1647: /* If userid = "anonymous" then make sure that there is a '@' at
1648: the end of the passwd */
1649: if (!strcasecomp(ctrl->user->id, "anonymous")) {
1650: if (*(ctrl->user->passwd+strlen(ctrl->user->passwd)-1) != '@')
1651: StrAllocCat(ctrl->user->passwd, "@");
1652: }
1653: if (!HTFTP_send_cmd(ctrl, "PASS", ctrl->user->passwd))
1654: state = SENT_PASSWD;
1655: else
1656: state = ERROR;
1657: break;
1.1 timbl 1658:
1.23 frystyk 1659: case SENT_PASSWD:
1.25 frystyk 1660: status = HTFTP_get_response(ctrl, &ctrl->reply);
1661: if (status/100 == 2) { /* Logged in with passwd */
1662: HTFTPAddWelcome(ctrl);
1.23 frystyk 1663: state = SUCCESS;
1.28 frystyk 1664: } else if (status/100 == 3) { /* Account demanded */
1665: HTFTPAddWelcome(ctrl);
1.23 frystyk 1666: state = NEED_ACCOUNT;
1.28 frystyk 1667: } else if (status == 530 && asked == YES)
1.23 frystyk 1668: state = NEED_USER_INFO; /* User unknown */
1669: else if (status/100 == 4)
1670: state = FAILURE;
1671: else
1672: state = ERROR;
1673: break;
1674:
1675: case NEED_ACCOUNT:
1676: {
1677: char *prompt = NULL;
1678: char *account = NULL;
1679: StrAllocCopy(prompt, "Enter account for user: ");
1680: StrAllocCat(prompt, ctrl->user->domain);
1681: StrAllocCat(prompt, "@");
1682: StrAllocCat(prompt, ctrl->user->id);
1683: if ((account = HTPrompt(prompt, NULL)) != NULL &&
1684: !HTFTP_send_cmd(ctrl, "ACCT", account)) {
1685: state = SENT_ACCOUNT;
1686: } else {
1687: state = ERROR;
1688: }
1689: free(prompt);
1690: free(account);
1691: }
1692: break;
1.1 timbl 1693:
1.23 frystyk 1694: case SENT_ACCOUNT:
1.25 frystyk 1695: status = HTFTP_get_response(ctrl, &ctrl->reply);
1696: if (status/100 == 2) {
1697: HTFTPAddWelcome(ctrl);
1.23 frystyk 1698: state = SUCCESS;
1.25 frystyk 1699: } else if (status/100 == 4)
1.23 frystyk 1700: state = FAILURE;
1701: else
1702: state = ERROR;
1703: break;
1704:
1705: case NEED_USER_INFO:
1706: {
1707: char *prompt = NULL;
1708: StrAllocCopy(prompt, "Enter username and password for: ");
1709: StrAllocCat(prompt, ctrl->user->domain);
1710: FREE(ctrl->user->id);
1711: FREE(ctrl->user->passwd);
1712: HTPromptUsernameAndPassword(prompt, &ctrl->user->id,
1713: &ctrl->user->passwd);
1714: if (ctrl->user->id && ctrl->user->passwd &&
1715: !HTFTP_send_cmd(ctrl, "USER", ctrl->user->id))
1716: state = SENT_UID;
1717: else
1718: state = ERROR;
1719: free(prompt);
1720: }
1721: asked = NO;
1722: break;
1.1 timbl 1723:
1.23 frystyk 1724: case FAILURE: /* Otherwise gcc complains :-( */
1725: case ERROR:
1726: case SUCCESS:
1727: break;
1728: } /* end of switch */
1729: }
1730: if (state == SUCCESS) {
1731: if (TRACE)
1732: fprintf(stderr, "FTP......... Logged in at `%s\' as `%s\'\n",
1733: ctrl->user->domain, ctrl->user->id);
1734: }
1.1 timbl 1735:
1.23 frystyk 1736: /* This is a real pain this reuse user stuff :-( */
1737: if (HTFTPUserInfo) {
1738: StrAllocCopy(old_user->domain, ctrl->user->domain);
1739: StrAllocCopy(old_user->id, ctrl->user->id);
1740: StrAllocCopy(old_user->passwd, ctrl->user->passwd);
1741: }
1742: return state;
1743: }
1.1 timbl 1744:
1.23 frystyk 1745: /* HTFTP_logout
1.1 timbl 1746: **
1.23 frystyk 1747: ** This function logs out from a ftp-server.
1748: **
1749: ** Returns -2 on ERROR, -1 on FAILURE, 0 on SUCCESS.
1.1 timbl 1750: */
1.23 frystyk 1751: PRIVATE int HTFTP_logout ARGS1(ftp_ctrl_info *, ctrl)
1752: {
1753: enum _state {
1754: ERROR = -2,
1755: FAILURE = -1,
1756: SUCCESS = 0,
1757: BEGIN,
1758: SENT_QUIT
1759: } state = BEGIN;
1760: int status;
1761:
1762: /* This loop only stops if state is ERROR, FAILURE or SUCCESS */
1763: while (state > 0) {
1764: switch (state) {
1765: case BEGIN:
1766: if (!HTFTP_send_cmd(ctrl, "QUIT", NULL))
1767: state = SENT_QUIT;
1768: else
1769: state = ERROR;
1770: break;
1771:
1772: case SENT_QUIT:
1.28 frystyk 1773: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 1774: if (status/100 == 2)
1775: state = SUCCESS;
1776: else if (status/100 == 4)
1777: state = FAILURE;
1778: else
1779: state = ERROR;
1780: break;
1781:
1782: case FAILURE: /* Otherwise gcc complains :-( */
1783: case ERROR:
1784: case SUCCESS:
1785: break;
1786: }
1787: }
1788: return state;
1789: }
1790:
1.22 frystyk 1791:
1.23 frystyk 1792: /* HTFTP_get_data_con
1793: **
1794: ** Gets a valid data connection to the server and initializes the
1795: ** transfer mode.
1796: **
1797: ** Returns -2 on ERROR, -1 on FAILURE, 0 on SUCCESS.
1798: */
1.33 frystyk 1799: PRIVATE int HTFTP_get_data_con ARGS3(HTRequest *, request,
1800: ftp_data_info *, data, char *, url)
1.1 timbl 1801: {
1.23 frystyk 1802: enum _state {
1803: ERROR = -2,
1804: FAILURE = -1,
1805: SUCCESS = 0,
1806: BEGIN,
1807: SENT_TYPE,
1808: SENT_PASV,
1809: SENT_PORT,
1.33 frystyk 1810: NEED_ACTIVE, /* We are the active ones in the connection */
1811: NEED_PASSIVE /* We are passive */
1.23 frystyk 1812: } state = BEGIN;
1813: int serv_port;
1.1 timbl 1814: int status;
1.28 frystyk 1815: ftp_ctrl_info *ctrl = data->ctrl;
1.1 timbl 1816:
1.23 frystyk 1817: /* This loop only stops if state is ERROR, FAILURE or SUCCESS */
1818: while (state > 0) {
1819: switch (state) {
1820: case BEGIN:
1.33 frystyk 1821:
1.23 frystyk 1822: /* First check if it is necessary to send TYPE, else send PASV */
1823: if (data->datatype) {
1.28 frystyk 1824: if (!HTFTP_send_cmd(ctrl, "TYPE", data->datatype))
1.23 frystyk 1825: state = SENT_TYPE;
1826: else
1827: state = ERROR;
1828: } else {
1.28 frystyk 1829: if (!HTFTP_send_cmd(ctrl, "PASV", NULL))
1.23 frystyk 1830: state = SENT_PASV;
1831: else
1832: state = ERROR;
1833: }
1834: break;
1835:
1836: case SENT_PASV:
1837: {
1.28 frystyk 1838: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 1839: if (status == 227) {
1840: /* If succes, we have to scan for the returned port number.
1841: However, the format for the response is not standard, so
1842: the best thing to do is to scan for the first digit
1843: after the status code, see RFC1123 */
1844: char *portstr;
1845: int h0, h1, h2, h3, p0, p1;
1.28 frystyk 1846: portstr = ctrl->reply->data+3;
1.23 frystyk 1847: while (*portstr && !isdigit(*portstr++));
1848: if (!*portstr || sscanf(--portstr, "%d,%d,%d,%d,%d,%d",
1849: &h0, &h1, &h2, &h3, &p0, &p1)<4) {
1850: if (TRACE) fprintf(stderr,
1851: "FTP......... PASV reply has no inet address!\n");
1852: state = ERROR;
1853: } else {
1854: serv_port = (p0<<8)+p1;
1855: state = NEED_ACTIVE;
1856: }
1857: } else if (status/100 == 4)
1858: state = FAILURE;
1859: else if (state == 530) /* Not logged in??? */
1860: state = ERROR;
1861: else
1862: state = NEED_PASSIVE; /* If error, try PORT instead */
1863: }
1864: break;
1.22 frystyk 1865:
1.23 frystyk 1866: case NEED_ACTIVE:
1867: /* Now get ready for a connect */
1868: if (TRACE) fprintf(stderr,
1869: "FTP......... Server is listening on port %d\n",
1870: serv_port);
1.32 frystyk 1871:
1872: /* Got to strip any host port indication as this is for the control
1873: connection. Thanks to ramey@jello.csc.ti.com (Joe Ramey) */
1874: {
1875: char *host=HTParse(url, "",
1876: PARSE_ACCESS+PARSE_HOST+PARSE_PUNCTUATION);
1877: char *portptr = strrchr(host, ':');
1878: if (portptr && strncmp(portptr, "://", 3))
1879: *portptr = '\0';
1.33 frystyk 1880: status = HTDoConnect(request, host, serv_port,
1.32 frystyk 1881: &data->socket, (u_long *) NULL);
1882: free(host);
1883: }
1.33 frystyk 1884: if (status < 0) {
1.23 frystyk 1885: if (TRACE) fprintf(stderr,
1886: "FTP......... Data connection failed using PASV, let's try PORT instead\n");
1.33 frystyk 1887: HTErrorIgnore(request); /* Don't generate error message */
1.23 frystyk 1888: state = NEED_PASSIVE;
1889: } else if (status >= 0) {
1890: if (TRACE) fprintf(stderr, "FTP......... Data connected using PASV, socket %d\n", data->socket);
1891: state = SUCCESS;
1892: } else {
1893: state = ERROR; /* Interrupted */
1894: }
1895: break;
1.22 frystyk 1896:
1.23 frystyk 1897: case NEED_PASSIVE:
1898: #ifdef LISTEN
1899: /* The server didn't accept our PASV so now we try ourselves to be
1900: passive using PORT */
1901: if (get_listen_socket(data) < 0 ||
1.28 frystyk 1902: HTFTP_send_cmd(ctrl, "PORT", this_addr))
1.23 frystyk 1903: state = ERROR;
1904: else
1905: state = SENT_PORT;
1906: #else
1907: /* If PORT is not compiled, then there is nothing we can do! */
1908: if (TRACE) fprintf(stderr, "FTP......... PORT is not possible!\n");
1909: state = ERROR;
1910: #endif
1911: break;
1912:
1913: case SENT_PORT:
1.28 frystyk 1914: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 1915: if (status/100 == 2) {
1.33 frystyk 1916: data->passive = 1;
1.23 frystyk 1917: state = SUCCESS;
1918: } else if (status/100 == 4)
1919: state = FAILURE;
1920: else
1921: state = ERROR;
1922: break;
1.1 timbl 1923:
1.23 frystyk 1924: case SENT_TYPE:
1.28 frystyk 1925: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 1926: /* If OK, then tell the server to be passive */
1927: if (status/100 == 2) {
1.28 frystyk 1928: if (!HTFTP_send_cmd(ctrl, "PASV", NULL))
1.23 frystyk 1929: state = SENT_PASV;
1930: else
1931: state = ERROR;
1932: } else if (status/100 == 4)
1933: state = FAILURE;
1934: else
1935: state = ERROR;
1936: break;
1937:
1938: case ERROR: /* Otherwise gcc complains :-( */
1939: case FAILURE:
1940: case SUCCESS:
1941: break;
1.22 frystyk 1942: }
1.23 frystyk 1943: }
1944: return state;
1945: }
1946:
1947:
1.33 frystyk 1948: #ifdef LISTEN
1949: /* HTFTP_switch_to_port
1950: **
1951: ** This function changes the current data connection from being PASV to
1952: ** PORT. This is to handle servers that doesn't tell if they can handle
1953: ** a PASV data connection before very late in the state diagram.
1954: **
1955: ** Returns -2 on ERROR, -1 on FAILURE, 0 on SUCCESS.
1956: */
1957: PRIVATE int HTFTP_switch_to_port ARGS2(ftp_data_info *, data,
1958: HTRequest *, req)
1959: {
1960: enum _state {
1961: ERROR = -2,
1962: SUCCESS = 0,
1963: } state = ERROR;
1964: int status;
1965: ftp_ctrl_info *ctrl = data->ctrl;
1966:
1967: if (data->passive) {
1968: if (TRACE)
1969: fprintf(stderr, "FTP Switch.. We are already passive, so PORT won't help :-(\n");
1970: return state;
1971: }
1972:
1973: if (TRACE)
1974: fprintf(stderr, "FTP Switch.. Closing PASV data connection number %d, and try to reopen it on the fly using PORT\n",
1975: data->socket);
1976: if ((status = NETCLOSE(data->socket)) < 0) {
1977: HTInetStatus("close data socket");
1978: } else
1979: data->socket = -1; /* Invalid socket */
1980:
1981: /* Now get new data connection using PORT */
1982: if (status >= 0 && get_listen_socket(data) >= 0 &&
1983: !HTFTP_send_cmd(ctrl, "PORT", this_addr)) {
1984: status = HTFTP_get_response(ctrl,&ctrl->reply);
1985: if (status/100 == 2) {
1986: data->passive = 1;
1987: state = SUCCESS;
1988: }
1989: }
1990: return state;
1991: }
1992: #endif /* LISTEN */
1993:
1994:
1995: /* HTFTP_look_for_data
1996: **
1997: ** This function puts up a select on the data connetcion and the control
1998: ** connection in order to find out on which one data is transmitted.
1999: **
2000: ** Returns -1 on ERROR, 0 if data-connection, 1 if control connection.
2001: */
2002: PRIVATE int HTFTP_look_for_data ARGS2(HTRequest *, request,
2003: ftp_data_info *, data)
2004: {
2005: int status = -1;
2006: fd_set read_socks;
2007: struct timeval max_wait;
2008: ftp_ctrl_info *ctrl = data->ctrl;
2009: int maxfdpl = HTMAX(data->socket, ctrl->socket) + 1;
2010: if (data->socket < 0 || ctrl->socket < 0) {
2011: if (TRACE)
2012: fprintf(stderr, "FTP Select.. Invalid socket\n");
2013: return -1;
2014: }
2015:
2016: /* Initialize the set of sockets */
2017: FD_ZERO(&read_socks);
2018: FD_SET(data->socket, &read_socks); /* Turn on bit for data socket */
2019: FD_SET(ctrl->socket, &read_socks); /* Turn on bit for control socket */
2020:
2021: /* Set up timer */
2022: if (HTFTPTimeOut <= 0)
2023: HTFTPTimeOut = FTP_DEFAULT_TIMEOUT;
2024: max_wait.tv_sec = HTFTPTimeOut/100;
2025: max_wait.tv_usec = (HTFTPTimeOut%100)*10000;
2026:
2027: /* This sleep is necessary as data is usually arriving more slow on control
2028: connection than on data connection. Even on an error, the data socket
2029: might indicate that data is ready, even though they are not :-( */
2030: sleep(1);
2031:
2032: /* Now make the select */
2033: if ((status = select(maxfdpl, &read_socks, (fd_set *) NULL,
2034: (fd_set *) NULL, &max_wait)) < 0)
2035: HTInetStatus("select");
2036: else if (!status) {
2037: if (TRACE) fprintf(stderr, "FTP Select.. Connections timed out\n");
2038: status = -1;
2039: } else if (status > 1) {
2040: if (TRACE) fprintf(stderr, "FTP Select.. Both data connetion and control data connection has data, let's grab the control\n");
2041: status = 1;
2042: } else if (FD_ISSET(data->socket, &read_socks)) {
2043: if (TRACE)
2044: fprintf(stderr, "FTP Select.. Data connection %d ready\n",
2045: data->socket);
2046: status = 0;
2047: } else if (FD_ISSET(ctrl->socket, &read_socks)) {
2048: if (TRACE)
2049: fprintf(stderr, "FTP Select.. Control connection %d ready\n",
2050: ctrl->socket);
2051: status = 1;
2052: } else {
2053: if (TRACE)
2054: fprintf(stderr, "FTP Select.. Unknown socket returned\n");
2055: status = -1;
2056: }
2057: return status;
2058: }
2059:
2060:
1.23 frystyk 2061: /* HTFTPServerInfo()
2062: **
2063: ** This function finds out what server we are talking to.
2064: ** Returns -2 on ERROR, -1 on FAILURE, 0 on SUCCESS.
2065: **
2066: ** Thanks to James.W.Matthews@Dartmouth.EDU (James W. Matthews) for making
2067: ** his code available.
1.1 timbl 2068: */
1.23 frystyk 2069: PRIVATE int HTFTPServerInfo ARGS1(ftp_ctrl_info *, ctrl)
2070: {
2071: enum _state {
2072: ERROR = -2,
2073: FAILURE = -1,
2074: SUCCESS = 0,
2075: BEGIN,
2076: SENT_SYST,
2077: NEED_PWD,
2078: SENT_PWD
2079: } state = BEGIN;
2080: int status;
2081:
2082: /* This loop only stops if state is ERROR, FAILURE or SUCCESS */
2083: while (state > 0) {
2084: switch (state) {
2085: case BEGIN:
2086: if (!HTFTP_send_cmd(ctrl, "SYST", NULL))
2087: state = SENT_SYST;
2088: else
2089: state = ERROR;
2090: break;
2091:
2092: case SENT_SYST:
2093: {
2094: char *info;
1.28 frystyk 2095: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 2096: if (status/100 != 2) {
2097: state = NEED_PWD;
2098: break;
2099: }
2100:
2101: /* Got a line - what kind of server are we talking to? */
1.28 frystyk 2102: info = ctrl->reply->data+3; /* Skip response code */
1.23 frystyk 2103: while (*info && *info++ == ' ');
2104: if (!*info) {
2105: if (TRACE)
2106: fprintf(stderr, "FTP......... No server info?\n");
2107: state = NEED_PWD;
2108: break;
2109: }
2110: --info;
2111: if (strncmp(info, "UNIX Type: L8MAC-OSMachTen", 28) == 0) {
2112: ctrl->server = MACHTEN_SERVER;
2113: ctrl->use_list = YES;
2114: ctrl->unsure_type = NO;
2115: } else if (strstr(info, "UNIX") != NULL) {
2116: ctrl->server = UNIX_SERVER;
2117: ctrl->use_list = YES;
2118: ctrl->unsure_type = NO;
2119: } else if (strncmp(info, "VMS", 3) == 0) {
2120: ctrl->server = VMS_SERVER;
2121: ctrl->use_list = YES;
2122: ctrl->unsure_type = NO;
2123: } else if ((strncmp(info, "VM/CMS", 6) == 0) ||
2124: (strncmp(info, "VM", 2) == 0)) {
2125: ctrl->server = CMS_SERVER;
2126: ctrl->unsure_type = NO;
2127: } else if (strncmp(info, "DCTS", 4) == 0) {
2128: ctrl->server = DCTS_SERVER;
2129: ctrl->unsure_type = NO;
2130: } else if (strstr(info, "MAC-OS TCP/ConnectII") != NULL) {
2131: ctrl->server = TCPC_SERVER;
2132: /* Check old versions of TCP/C using / in pathnames */
2133: ctrl->unsure_type = YES;
2134: } else if (strncmp(info, "MACOS Peter's Server", 20) == 0) {
2135: ctrl->server = PETER_LEWIS_SERVER;
2136: ctrl->use_list = YES;
2137: ctrl->unsure_type = NO;
1.32 frystyk 2138: } else if (strncmp(info, "Windows_NT", 10) == 0) {
2139: ctrl->server = WINDOWS_NT;
2140: ctrl->use_list = YES;
2141: ctrl->unsure_type = NO;
1.23 frystyk 2142: }
2143:
2144: /* If we are unsure, try PWD to get more information */
2145: if (ctrl->server == UNKNOWN || ctrl->unsure_type == YES)
2146: state = NEED_PWD;
2147: else
2148: state = SUCCESS;
1.1 timbl 2149: }
1.23 frystyk 2150: break;
2151:
2152: case NEED_PWD:
2153: /* get the working directory (to see what it looks like) */
2154: if (!HTFTP_send_cmd(ctrl, "PWD", NULL))
2155: state = SENT_PWD;
2156: else
2157: state = ERROR;
2158: break;
2159:
2160: case SENT_PWD:
2161: {
1.28 frystyk 2162: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 2163: if (status/100 != 2)
2164: state = ERROR;
2165: else {
2166: char *start, *end;
2167:
2168: /* Now analyze response information between "'s */
1.28 frystyk 2169: if ((start = strchr(ctrl->reply->data, '"')) == NULL ||
1.23 frystyk 2170: (end = strchr(++start, '"')) == NULL) {
2171: if (TRACE)
2172: fprintf(stderr,
2173: "FTP......... No current directory?\n");
2174: ctrl->server = GENERIC_SERVER;
2175: } else {
2176: *end = '\0';
2177: if (ctrl->server == TCPC_SERVER) {
2178: ctrl->server = *start == '/' ?
2179: NCSA_SERVER : TCPC_SERVER;
2180: ctrl->unsure_type = NO;
2181: } else if (*start == '/') {
2182: /* path names starting with / imply Unix, right? */
2183: ctrl->server = UNIX_SERVER;
2184: ctrl->use_list = YES;
2185: } else if (*(end-1) == ']') {
2186: /* path names ending with ] imply VMS, right? */
2187: ctrl->server = VMS_SERVER;
2188: } else
2189: ctrl->server = GENERIC_SERVER;
2190: }
2191: state = SUCCESS;
2192: }
2193: }
2194: break;
2195:
2196: case FAILURE: /* Otherwise gcc complains :-( */
2197: case ERROR:
2198: case SUCCESS:
2199: break;
1.1 timbl 2200: }
1.23 frystyk 2201: }
2202: if (TRACE) {
2203: static char *servers[] = {
2204: "UNKNOWN",
2205: "GENERIC",
2206: "MACHTEN",
2207: "UNIX",
2208: "VMS",
2209: "CMS",
2210: "DCTS",
2211: "TCPC",
1.32 frystyk 2212: "PETER LEWIS",
2213: "NCSA",
2214: "WINDOWS NT"
1.23 frystyk 2215: };
2216: if (ctrl->unsure_type == YES)
2217: fprintf(stderr, "FTP......... This might be a %s server\n",
2218: *(servers+ctrl->server+1));
2219: else
2220: fprintf(stderr, "FTP......... We are talking to a %s server\n",
2221: *(servers+ctrl->server+1));
2222: }
2223: return state;
2224: }
2225:
2226:
2227: /* HTFTPLocation()
2228: **
2229: ** This function compares the current directory location in the
2230: ** ftp-session to the new URL and returns the relative position. If
2231: ** the new URL is at a higher location, the function performs CDUP's
2232: ** until this location is reached so that the relative position is '.'
2233: **
2234: ** Returns relative path name if OK, else current location
2235: **
1.1 timbl 2236: */
1.23 frystyk 2237: PRIVATE char *HTFTPLocation ARGS2(ftp_ctrl_info *, ctrl, char *, url)
2238: {
2239: unsigned char getup = 0;
2240: char *current;
2241: char *new;
2242: char *relative;
2243: char *result = NULL;
2244: char *strptr;
2245:
2246: /* Make a full URL out of current location */
2247: current = HTParse(url, "", PARSE_ACCESS+PARSE_HOST+PARSE_PUNCTUATION);
2248: StrAllocCat(current, "/");
2249: StrAllocCat(current, ctrl->location);
2250: if (*(current+strlen(current)-1) != '/')
2251: StrAllocCat(current, "/");
2252:
2253: /* Make a temporary URL without any type indication */
2254: new = HTParse(url, "", PARSE_ALL);
2255: if ((strptr = strrchr(new, ';')) != NULL)
2256: *strptr = '\0';
2257:
2258: /* Compare those two URLs */
2259: relative = HTRelative(new, current);
2260: {
2261: /* Now send any CDUP if necessary */
2262: char *tail = relative;
2263: int status;
2264: while (tail && (strptr = strstr(tail, "../")) != NULL) {
2265: if (HTFTP_send_cmd(ctrl, "CDUP", NULL)) {
2266: break;
2267: }
1.28 frystyk 2268: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 2269: if (status/100 != 2) {
2270: break;
1.1 timbl 2271: }
1.23 frystyk 2272: ++getup;
2273: tail += 3;
2274: }
2275: }
2276:
2277: /* Now update current location if we have used CDUP and make relative
2278: return value. */
2279: if (getup) {
2280: char *location = HTParse(new, "", PARSE_PATH);
2281: free(ctrl->location);
2282: if (*location == '/')
2283: ctrl->location = ++location;
2284: else
2285: ctrl->location = location;
2286: if (*ctrl->location &&
2287: *(ctrl->location+strlen(ctrl->location)-1) == '/')
2288: *(ctrl->location+strlen(ctrl->location)-1) = '\0';
2289: StrAllocCopy(result, "");
2290: free(relative);
2291: } else {
2292: if (*relative == '/') {
2293: StrAllocCopy(result, relative+1);
2294: free(relative);
2295: } else
2296: result = relative;
1.25 frystyk 2297: if (*relative && *(relative+strlen(relative)-1) == '/')
1.23 frystyk 2298: *(relative+strlen(relative)-1) = '\0';
2299: }
2300: if (TRACE)
2301: fprintf(stderr, "FTP......... current location on server: `%s\'\n",
2302: ctrl->location);
2303: free(current);
2304: free(new);
2305: return result;
2306: }
1.22 frystyk 2307:
2308:
1.23 frystyk 2309: /* ------------------------------------------------------------------------- */
2310: /* FTP Client Functions for receiving data */
2311: /* ------------------------------------------------------------------------- */
1.1 timbl 2312:
1.23 frystyk 2313: /* HTFTP_get_dir
2314: **
2315: ** This function asks for the directory specified and calls
2316: ** HTFTPBrowseDirectory. First we try in one go, but if that doesn't
2317: ** work, then we use CWD for each segment. The directory is searched
2318: ** relative to the login directory, that is without a starting '/'.
2319: **
2320: ** Returns -2 on ERROR, -1 on FAILURE, 0 on SUCCESS.
1.1 timbl 2321: */
1.33 frystyk 2322: PRIVATE int HTFTP_get_dir ARGS3(ftp_ctrl_info *, ctrl, HTRequest *, req,
2323: char *, relative)
1.23 frystyk 2324: {
2325: enum _state {
2326: ERROR = -2,
2327: FAILURE = -1,
2328: SUCCESS = 0,
2329: BEGIN,
2330: NEED_LIST,
2331: SENT_LIST,
2332: SENT_CWD,
2333: MULTIPLE_CWD,
2334: READY_FOR_DATA,
2335: SENT_ABOR,
1.33 frystyk 2336: WAIT_FOR_CONNECTION,
2337: HANDLE_CTRL,
1.23 frystyk 2338: GOT_DATA
2339: } state = BEGIN;
1.33 frystyk 2340: BOOL handle_ctrl = NO;
1.23 frystyk 2341: ftp_data_info *data = (ftp_data_info *) ctrl->data_cons->next->object;
2342: int status;
2343: char *unescaped = NULL;
2344: StrAllocCopy(unescaped, relative);
2345: HTUnEscape(unescaped);
1.30 luotonen 2346: HTCleanTelnetString(unescaped); /* Prevent security holes */
1.23 frystyk 2347:
2348: /* This loop only stops if state is ERROR, FAILURE or SUCCESS */
2349: while (state > 0) {
2350: switch (state) {
2351: case BEGIN:
2352: /* Only if the root directory is requested, we can use LIST right
2353: away, else we must first use CWD */
2354: if (!*unescaped || !strcmp(unescaped, "/"))
2355: state = NEED_LIST;
2356: else {
2357: /* We first try to CWD to the location in one go. */
2358: if (!HTFTP_send_cmd(ctrl, "CWD", unescaped))
2359: state = SENT_CWD;
2360: else
2361: state = ERROR;
2362: }
2363: break;
2364:
2365: case NEED_LIST:
2366: if (ctrl->use_list == YES) {
2367: if (!HTFTP_send_cmd(ctrl, "LIST", NULL))
2368: state = SENT_LIST;
2369: else
2370: state = ERROR;
2371: } else {
2372: if (!HTFTP_send_cmd(ctrl, "NLST", NULL))
2373: state = SENT_LIST;
2374: else
2375: state = ERROR;
2376: }
2377: break;
2378:
2379: case SENT_LIST:
1.33 frystyk 2380: #ifdef SEQUENT
2381:
2382: /* If we are listening, do a non-blocking accept now, as the
1.23 frystyk 2383: accept on some systems (DYNIX) completes the connection. On
2384: BSD systems, the completion is done independently of the
2385: accept. (thanks to Bill Rushka, wcr@aps.org) */
1.33 frystyk 2386: if (data->passive == 1) {
1.23 frystyk 2387: int newfd;
1.33 frystyk 2388: if ((newfd = HTDoAccept(req, data->socket)) >= 0) {
1.23 frystyk 2389: #ifdef REPEAT_LISTEN
2390: if (TRACE) fprintf(stderr, "FTP......... Passive data channel number %d stays open.\n", data->socket);
2391: #else
2392: if (TRACE) fprintf(stderr, "FTP......... Passive data channel number %d closed.\n", data->socket);
2393: if (NETCLOSE(data->socket) < 0) {
2394: HTInetStatus("close");
2395: state = ERROR;
2396: break;
2397: }
1.22 frystyk 2398: #endif
1.23 frystyk 2399: data->socket = newfd; /* Switch to new socket */
1.33 frystyk 2400: data->passive = 2;
1.23 frystyk 2401: if (TRACE)
2402: fprintf(stderr, "FTP......... New data socket: %d\n",
2403: data->socket);
2404: } else {
1.31 frystyk 2405: HTChunkClear(ctrl->reply);
1.33 frystyk 2406: ctrl->reply = NULL;
1.23 frystyk 2407: state = ERROR;
2408: break;
2409: }
1.1 timbl 2410: }
1.33 frystyk 2411: #endif /* SEQUENT */
2412:
1.28 frystyk 2413: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.33 frystyk 2414: if (status == 150) /* About to open connection */
2415: state = WAIT_FOR_CONNECTION;
2416: else if (status == 125) /* Transfer starting */
1.23 frystyk 2417: state = READY_FOR_DATA;
2418: else if (status/100 == 4)
2419: state = FAILURE;
2420: else
2421: state = ERROR;
2422: break;
1.1 timbl 2423:
1.23 frystyk 2424: case SENT_CWD:
1.28 frystyk 2425: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 2426: if (status/100 == 2) {
2427: /* Update current location */
2428: if (*ctrl->location)
2429: StrAllocCat(ctrl->location, "/");
2430: StrAllocCat(ctrl->location, relative);
1.28 frystyk 2431: HTChunkClear(ctrl->welcome);
2432: HTFTPAddWelcome(ctrl);
1.23 frystyk 2433: state = NEED_LIST;
2434: } else if (status/100 == 4)
2435: state = FAILURE;
2436: else
2437: state = MULTIPLE_CWD;
2438: break;
1.1 timbl 2439:
1.23 frystyk 2440: case MULTIPLE_CWD:
2441: /* We must use the escaped version when looking for '/' as
2442: delimiter between segments, and then unescape each segment */
2443: if (TRACE) fprintf(stderr, "FTP......... Can't jump directly to location, try multiple CD's instead\n");
2444: state = NEED_LIST; /* This is overwritten if error */
2445: {
2446: char *path = NULL;
2447: char *segment;
2448: StrAllocCopy(path, relative);
2449: segment = strtok(path, "/");
2450: while (segment && *segment) {
2451: HTUnEscape(segment);
1.30 luotonen 2452: HTCleanTelnetString(segment); /* Prevent security holes */
1.23 frystyk 2453: if (HTFTP_send_cmd(ctrl, "CWD", segment)) {
2454: state = ERROR;
2455: break;
2456: }
1.28 frystyk 2457: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 2458: if (status/100 != 2) {
2459: if (status/100 == 4)
2460: state = FAILURE;
2461: else
2462: state = ERROR;
2463: break;
2464: } else { /* Update current location */
2465: char *new_seg = HTEscape(segment, URL_XPALPHAS);
2466: if (*ctrl->location)
2467: StrAllocCat(ctrl->location, "/");
2468: StrAllocCat(ctrl->location, new_seg);
2469: free(new_seg);
1.28 frystyk 2470: HTChunkClear(ctrl->welcome);
2471: HTFTPAddWelcome(ctrl);
1.23 frystyk 2472: }
2473: segment = strtok(NULL, "/"); /* Get next token */
1.22 frystyk 2474: }
1.23 frystyk 2475: free(path);
1.22 frystyk 2476: }
1.23 frystyk 2477: break;
1.22 frystyk 2478:
1.23 frystyk 2479: case READY_FOR_DATA:
1.33 frystyk 2480: if (data->passive == 1) {
2481: int newfd;
2482: if ((newfd = HTDoAccept(req, data->socket)) >= 0) {
2483: #ifdef REPEAT_LISTEN
2484: if (TRACE) fprintf(stderr, "FTP......... Passive data channel number %d stays open.\n", data->socket);
2485: #else
2486: if (TRACE) fprintf(stderr, "FTP......... Passive data channel number %d closed.\n", data->socket);
2487: if (NETCLOSE(data->socket) < 0) {
2488: HTInetStatus("close");
2489: state = ERROR;
2490: break;
2491: }
2492: #endif
2493: data->socket = newfd; /* Switch to new socket */
2494: data->passive = 2;
2495: if (TRACE)
2496: fprintf(stderr, "FTP......... New data socket: %d\n",
2497: data->socket);
2498: } else {
2499: HTChunkClear(ctrl->reply);
2500: ctrl->reply = NULL;
2501: state = ERROR;
2502: break;
2503: }
2504: }
2505:
1.23 frystyk 2506: /* Now, the browsing module can be called */
2507: {
2508: char *url = HTAnchor_physical(req->anchor);
2509: char *path = HTParse(url, "", PARSE_PATH+PARSE_PUNCTUATION);
2510: HTUnEscape(path);
2511: if (TRACE)
2512: fprintf(stderr, "FTP......... Receiving directory `%s\'\n",
2513: path);
2514: status = HTFTPBrowseDirectory(req, path, data,
2515: HTFTP_get_dir_string);
2516: if (status == -1)
2517: state = ERROR;
2518: else if (status == HT_INTERRUPTED) {
2519: if (!HTFTP_send_cmd(ctrl, "ABOR", NULL))
2520: state = SENT_ABOR;
2521: else
2522: state = ERROR;
2523: } else
2524: state = GOT_DATA;
2525: free(path);
1.22 frystyk 2526: }
1.23 frystyk 2527: break;
2528:
2529: case GOT_DATA:
1.33 frystyk 2530: if (!handle_ctrl) {
2531: status = HTFTP_get_response(ctrl, &ctrl->reply);
2532: if (status/100 == 2)
2533: state = SUCCESS; /* Directory read */
2534: else if (status/100 == 4)
2535: state = FAILURE;
2536: else
2537: state = ERROR;
2538: } else
2539: state = SUCCESS;
2540: break;
2541:
2542: case SENT_ABOR:
1.28 frystyk 2543: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 2544: if (status/100 == 2)
1.33 frystyk 2545: state = SUCCESS;
1.23 frystyk 2546: else if (status/100 == 4)
2547: state = FAILURE;
2548: else
2549: state = ERROR;
2550: break;
2551:
1.33 frystyk 2552: case WAIT_FOR_CONNECTION:
2553: /* Now we have to wait to see whether the FTP-server sends on the
2554: data port or the control port */
2555: status = HTFTP_look_for_data(req, data);
2556: if (!status)
2557: state = READY_FOR_DATA;
2558: else
2559: state = HANDLE_CTRL;
2560: break;
2561:
2562: case HANDLE_CTRL:
1.28 frystyk 2563: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.33 frystyk 2564: if (status/100 == 2) {
2565: state = READY_FOR_DATA;
2566: #ifdef LISTEN
2567: } else if (status == 425) { /* Connection could not be opened */
2568: if (HTFTP_switch_to_port(data, req))
2569: state = ERROR;
2570: else
2571: state = NEED_LIST;
2572: #endif /* LISTEN */
2573: } else if (status/100 == 4)
1.23 frystyk 2574: state = FAILURE;
1.22 frystyk 2575: else
1.23 frystyk 2576: state = ERROR;
1.33 frystyk 2577: handle_ctrl = YES;
1.23 frystyk 2578: break;
2579:
2580: case FAILURE: /* Otherwise gcc complains :-( */
2581: case ERROR:
2582: case SUCCESS:
2583: break;
1.22 frystyk 2584: }
1.23 frystyk 2585: }
2586: FREE(unescaped);
2587: return state;
2588: }
2589:
2590:
2591: /* HTFTP_get_file
2592: **
2593: ** This function asks for the file specified. First we try in one go,
2594: ** but if that doesn't work, then we use CWD for each segment and then
2595: ** try to retrieve it. If that also fails, then we try if it is a
2596: ** directory. This procedure causes that directory links generated in
2597: ** HTFTPBrowseDirectory should have a '/' at the end in order to go
2598: ** directly to HTFTP_get_dir. The relative is searched relative to
2599: ** the login directory, that is without a starting '/'.
2600: **
2601: ** Returns -2 on ERROR, -1 on FAILURE, 0 on SUCCESS.
2602: */
1.33 frystyk 2603: PRIVATE int HTFTP_get_file ARGS3(ftp_ctrl_info *, ctrl, HTRequest *, req,
2604: char *, relative)
1.23 frystyk 2605: {
2606: enum _state {
2607: ERROR = -2,
2608: FAILURE = -1,
2609: SUCCESS = 0,
2610: BEGIN,
2611: SENT_RETR,
2612: MULTIPLE_CWD,
2613: READY_FOR_DATA,
2614: SENT_ABOR,
1.33 frystyk 2615: WAIT_FOR_CONNECTION,
2616: HANDLE_CTRL,
1.23 frystyk 2617: GOT_DATA
2618: } state = BEGIN;
1.33 frystyk 2619: BOOL handle_ctrl = NO;
1.23 frystyk 2620: BOOL multiple = NO; /* Have we already tried multiple CWD? */
2621: ftp_data_info *data = (ftp_data_info *) ctrl->data_cons->next->object;
2622: int status;
2623: char *unescaped = NULL;
2624: StrAllocCopy(unescaped, relative);
2625: HTUnEscape(unescaped);
1.30 luotonen 2626: HTCleanTelnetString(unescaped); /* Prevent security holes */
1.23 frystyk 2627:
1.33 frystyk 2628: /* This loop only stops if state is ERROR, FAILURE or SUCCESS */
1.23 frystyk 2629: while (state > 0) {
2630: switch (state) {
2631: case BEGIN:
2632: /* First we try to retrieve the file in one go. */
2633: if (!HTFTP_send_cmd(ctrl, "RETR", unescaped))
2634: state = SENT_RETR;
2635: else
2636: state = ERROR;
2637: break;
2638:
2639: case SENT_RETR:
1.33 frystyk 2640: #ifdef SEQUENT
2641: /* If we are listening, do a non-blocking accept now, as the
1.23 frystyk 2642: accept on some systems (DYNIX) completes the connection. On
2643: BSD systems, the completion is done independently of the
2644: accept. (thanks to Bill Rushka, wcr@aps.org) */
1.33 frystyk 2645: if (data->passive == 1) {
1.23 frystyk 2646: int newfd;
1.33 frystyk 2647: if ((newfd = HTDoAccept(req, data->socket)) >= 0) {
1.23 frystyk 2648: #ifdef REPEAT_LISTEN
2649: if (TRACE) fprintf(stderr, "FTP......... Passive data channel number %d stays open.\n", data->socket);
2650: #else
2651: if (TRACE) fprintf(stderr, "FTP......... Passive data channel number %d closed.\n", data->socket);
2652: if (NETCLOSE(data->socket) < 0) {
2653: HTInetStatus("close");
2654: state = ERROR;
2655: break;
2656: }
1.22 frystyk 2657: #endif
1.33 frystyk 2658: data->socket = newfd; /* Switch to new socket */
2659: data->passive = 2;
1.23 frystyk 2660: if (TRACE)
2661: fprintf(stderr, "FTP......... New data socket: %d\n",
2662: data->socket);
2663: } else {
1.31 frystyk 2664: HTChunkClear(ctrl->reply);
1.33 frystyk 2665: ctrl->reply = NULL;
1.23 frystyk 2666: state = ERROR;
2667: break;
2668: }
2669: }
1.33 frystyk 2670: #endif /* SEQUENT */
2671:
1.28 frystyk 2672: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.33 frystyk 2673: if (status == 150) /* About to open connection */
2674: state = WAIT_FOR_CONNECTION;
2675: else if (status == 125)
2676: state = READY_FOR_DATA; /* Transfer starting */
1.23 frystyk 2677: else if (status/100 == 4)
2678: state = FAILURE;
1.33 frystyk 2679:
1.23 frystyk 2680: /* If there is no '/' in unescaped, it won't help to try
2681: multiple CWD's, as it either doesn't exist or is a directory */
2682: else if (multiple == NO && strchr(unescaped, '/') != NULL)
2683: state = MULTIPLE_CWD;
2684: else {
2685: data->directory = YES;
2686: state = FAILURE;
2687: }
2688: break;
2689:
2690: case MULTIPLE_CWD:
2691: /* We must use the escaped version when looking for '/' as
2692: delimiter between segments, and then unescape each segment */
2693: if (TRACE) fprintf(stderr, "FTP......... Can't jump directly to location, try multiple CD's instead\n");
2694: multiple = YES;
2695: {
2696: char *path = NULL;
2697: char *segment;
2698: char *last_slash; /* Used to identify the last segment */
2699: StrAllocCopy(path, relative);
2700: if ((last_slash = strrchr(path, '/')) == NULL)
2701: last_slash = path;
2702: else
2703: last_slash++;
2704: segment = strtok(path, "/");
2705: while (segment && *segment && segment != last_slash) {
2706: HTUnEscape(segment);
1.30 luotonen 2707: HTCleanTelnetString(segment); /* Prevent security holes */
1.23 frystyk 2708: if (HTFTP_send_cmd(ctrl, "CWD", segment)) {
2709: state = ERROR;
2710: break;
2711: }
1.28 frystyk 2712: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 2713: if (status/100 != 2) {
2714: if (status/100 == 4)
2715: state = FAILURE;
2716: else
2717: state = ERROR;
2718: break;
2719: } else { /* Update current location */
2720: char *new_seg = HTEscape(segment, URL_XPALPHAS);
2721: if (*ctrl->location)
2722: StrAllocCat(ctrl->location, "/");
2723: StrAllocCat(ctrl->location, new_seg);
2724: free(new_seg);
2725: }
2726: segment = strtok(NULL, "/"); /* Get next token */
2727: }
2728: /* Now try to retrieve the last segment */
2729: if (segment == last_slash) {
2730: HTUnEscape(segment);
1.30 luotonen 2731: HTCleanTelnetString(segment); /* Prevent security holes */
1.33 frystyk 2732: if (!HTFTP_send_cmd(ctrl, "RETR", segment)) {
2733: StrAllocCopy(unescaped, segment);
1.23 frystyk 2734: state = SENT_RETR;
1.33 frystyk 2735: } else
1.23 frystyk 2736: state = ERROR;
2737: } else {
2738: if (TRACE) fprintf(stderr, "FTP......... Strange error, filename not found?\n");
2739: state = ERROR;
2740: }
2741: free(path);
2742: }
2743: break;
2744:
2745: case READY_FOR_DATA:
1.33 frystyk 2746: if (data->passive == 1) {
2747: int newfd;
2748: if ((newfd = HTDoAccept(req, data->socket)) >= 0) {
2749: #ifdef REPEAT_LISTEN
2750: if (TRACE) fprintf(stderr, "FTP......... Passive data channel number %d stays open.\n", data->socket);
2751: #else
2752: if (TRACE) fprintf(stderr, "FTP......... Passive data channel number %d closed.\n", data->socket);
2753: if (NETCLOSE(data->socket) < 0) {
2754: HTInetStatus("close");
2755: state = ERROR;
2756: break;
2757: }
2758: #endif
2759: data->socket = newfd; /* Switch to new socket */
2760: data->passive = 2;
2761: if (TRACE)
2762: fprintf(stderr, "FTP......... New data socket: %d\n",
2763: data->socket);
2764: } else {
2765: HTChunkClear(ctrl->reply);
2766: ctrl->reply = NULL;
2767: state = ERROR;
2768: break;
2769: }
2770: }
2771:
1.23 frystyk 2772: /* Now, the browsing module can be called */
2773: if (TRACE) fprintf(stderr, "FTP......... Receiving file `%s\'\n",
2774: unescaped);
2775: status = HTParseSocket(data->fileformat, data->socket, req);
2776: if (status != HT_LOADED) {
2777: if (status == HT_INTERRUPTED) {
2778: if (!HTFTP_send_cmd(ctrl, "ABOR", NULL))
2779: state = SENT_ABOR;
2780: else
2781: state = ERROR;
2782: } else
2783: state = ERROR;
2784: } else
2785: state = GOT_DATA;
2786: break;
2787:
2788: case GOT_DATA:
1.33 frystyk 2789: if (!handle_ctrl) {
2790: status = HTFTP_get_response(ctrl, &ctrl->reply);
2791: if (status/100 == 2)
2792: state = SUCCESS; /* File read */
2793: else if (status/100 == 4)
2794: state = FAILURE;
2795: else
2796: state = ERROR;
2797: } else
2798: state = SUCCESS;
1.23 frystyk 2799: break;
1.22 frystyk 2800:
1.23 frystyk 2801: case SENT_ABOR:
1.28 frystyk 2802: status = HTFTP_get_response(ctrl, &ctrl->reply);
1.23 frystyk 2803: if (status/100 == 2)
2804: state = SUCCESS;
2805: else if (status/100 == 4)
2806: state = FAILURE;
1.22 frystyk 2807: else
1.23 frystyk 2808: state = ERROR;
2809: break;
2810:
1.33 frystyk 2811: case WAIT_FOR_CONNECTION:
2812: /* Now we have to wait to see whether the FTP-server sends on the
2813: data port or the control port */
2814: status = HTFTP_look_for_data(req, data);
2815: if (!status)
2816: state = READY_FOR_DATA;
2817: else
2818: state = HANDLE_CTRL;
2819: break;
2820:
2821: case HANDLE_CTRL:
2822: status = HTFTP_get_response(ctrl, &ctrl->reply);
2823: if (status/100 == 2) {
2824: state = READY_FOR_DATA;
2825: #ifdef LISTEN
2826: } else if (status == 425) { /* Connection could not be opened */
2827: if (HTFTP_switch_to_port(data, req))
2828: state = ERROR;
2829: else {
2830: if (!HTFTP_send_cmd(ctrl, "RETR", unescaped))
2831: state = SENT_RETR;
2832: else
2833: state = ERROR;
2834: }
2835: #endif /* LISTEN */
2836: } else if (status/100 == 4)
2837: state = FAILURE;
2838: else
2839: state = ERROR;
2840: handle_ctrl = YES;
2841: break;
2842:
1.23 frystyk 2843: case FAILURE: /* Otherwise gcc complains :-( */
2844: case ERROR:
2845: case SUCCESS:
2846: break;
1.1 timbl 2847: }
2848: }
1.23 frystyk 2849: FREE(unescaped);
2850: return state;
2851: }
1.1 timbl 2852:
1.23 frystyk 2853:
2854: /* ------------------------------------------------------------------------- */
2855: /* PUBLIC FTP functions */
2856: /* ------------------------------------------------------------------------- */
2857:
2858: /* HTFTP_enable_session
2859: **
2860: ** This function makes it possible to reuse the same control connections
2861: ** until they are either timed out by the server, or that the session
1.31 frystyk 2862: ** is closed by HTFTP_end_session. Note that HTLoadFTP can run
1.23 frystyk 2863: ** independently of start and end session, and then each load runs like
2864: ** an atomic action.
2865: */
2866: PUBLIC void HTFTP_enable_session NOARGS
2867: {
2868: if (session) {
2869: if (TRACE)
2870: fprintf(stderr, "FTP......... Session is already enabled?\n");
2871: return;
2872: }
2873: session = HTList_new();
2874: }
2875:
2876:
2877: /* HTFTP_disable_session
2878: **
2879: ** This function is the closing function for HTFTP_enable_session.
2880: **
2881: ** Returns YES if OK, else NO
1.1 timbl 2882: */
1.23 frystyk 2883: PUBLIC BOOL HTFTP_disable_session NOARGS
2884: {
2885: BOOL status = YES;
2886: if (!session) {
2887: if (TRACE)
2888: fprintf(stderr, "FTP......... No session to disable?\n");
2889: return NO;
2890: }
1.1 timbl 2891: {
1.23 frystyk 2892: HTList *cur = session;
2893: ftp_ctrl_info *pres;
2894: while ((pres = (ftp_ctrl_info *) HTList_nextObject(cur))) {
2895: if (HTFTP_close_ctrl_con(pres))
2896: status = NO;
2897: }
2898: HTList_delete(session);
1.1 timbl 2899: }
1.23 frystyk 2900: session = NULL;
2901: return status;
2902: }
2903:
2904:
2905: /* Retrieve File from Server as an atomic action.
2906: ** -----------------------------------------------
2907: **
2908: ** On entry,
2909: ** request This is the request structure
2910: ** On exit,
2911: ** returns <0 Error has occured
2912: ** HT_LOADED OK
2913: */
1.31 frystyk 2914: PUBLIC int HTLoadFTP ARGS1(HTRequest *, request)
1.23 frystyk 2915: {
2916: char *url = HTAnchor_physical(request->anchor);
2917: int status = -1;
1.33 frystyk 2918: int retry; /* How many times tried? */
1.23 frystyk 2919: ftp_ctrl_info *ctrl;
2920:
1.33 frystyk 2921: if (!request || !url || !*url) {
2922: if (TRACE) fprintf(stderr, "HTLoadFTP... Bad argument\n");
2923: return -1;
2924: }
2925:
1.23 frystyk 2926: /* Initiate a (possibly already exsisting) control connection and a
2927: corresponding data connection */
2928: HTSimplify(url);
1.29 frystyk 2929: if((ctrl = HTFTP_init_con(request, url)) == NULL) {
1.33 frystyk 2930: #ifdef OLD_CODE
1.25 frystyk 2931: HTLoadError(request, 500,
1.32 frystyk 2932: "Could not establish connection to FTP-server");
1.33 frystyk 2933: #endif /* OLD_CODE */
2934: goto endfunc;
1.25 frystyk 2935: }
1.23 frystyk 2936:
2937: /* Only if the control connection is in IDLE state, a new
2938: transfer can be started. The control connection can be in another
2939: mode if (session), and then the request is getting queued in
2940: ctrl->data_cons. */
1.31 frystyk 2941: if (ctrl->state == FTP_IDLE || (session && ctrl->state == FTP_LOGGED_IN)) {
1.23 frystyk 2942: ftp_data_info *data = ctrl->data_cons->next->object;
1.31 frystyk 2943: if (ctrl->state == FTP_IDLE)
2944: ctrl->state = FTP_BEGIN;
2945: while (ctrl->state != FTP_IDLE) { /* Do until finished */
1.23 frystyk 2946: switch (ctrl->state) {
1.31 frystyk 2947: case FTP_BEGIN:
1.23 frystyk 2948: if (!HTFTP_login(ctrl))
1.31 frystyk 2949: ctrl->state = FTP_LOGGED_IN;
1.23 frystyk 2950: else
1.31 frystyk 2951: ctrl->state = FTP_ERROR;
1.23 frystyk 2952: break;
2953:
1.31 frystyk 2954: case FTP_LOGGED_IN:
1.33 frystyk 2955: if (!HTFTP_get_data_con(request, data, url))
1.31 frystyk 2956: ctrl->state = FTP_GOT_DATA_CON;
1.23 frystyk 2957: else
1.31 frystyk 2958: ctrl->state = FTP_ERROR;
1.23 frystyk 2959: break;
2960:
1.31 frystyk 2961: case FTP_GOT_DATA_CON:
1.23 frystyk 2962: {
2963: /* Now we must ask for the URL requested. If FAILURE, then
2964: we try twice to see, if it helps */
1.33 frystyk 2965: char *rel = NULL;
1.23 frystyk 2966: for (retry=0; retry<2; retry++) {
2967: if ((rel = HTFTPLocation(ctrl, url)) == NULL) {
1.31 frystyk 2968: ctrl->state = FTP_ERROR;
1.23 frystyk 2969: break;
2970: }
1.33 frystyk 2971: if (retry == 1 && TRACE)
2972: fprintf(stderr,
2973: "FTP......... First attempt to get URL failed, let's try again\n");
1.23 frystyk 2974:
2975: if (data->directory == YES) {
2976: /* If we haven't already got server-info */
2977: if (ctrl->server == UNKNOWN) {
2978: if (HTFTPServerInfo(ctrl)) {
1.31 frystyk 2979: ctrl->state = FTP_ERROR;
1.23 frystyk 2980: break;
2981: }
2982: }
1.33 frystyk 2983: status = HTFTP_get_dir(ctrl, request, rel);
1.23 frystyk 2984: }
2985: else
1.33 frystyk 2986: status = HTFTP_get_file(ctrl, request, rel);
1.23 frystyk 2987: if (!status) {
1.31 frystyk 2988: ctrl->state = FTP_GOT_DATA;
1.23 frystyk 2989: break;
2990: } else if (status == -2) { /* Error */
1.31 frystyk 2991: ctrl->state = FTP_ERROR;
1.23 frystyk 2992: break;
2993: } else {
1.33 frystyk 2994: FREE(rel);
1.31 frystyk 2995: ctrl->state = FTP_FAILURE; /* Try twice */
1.23 frystyk 2996: }
2997: }
1.33 frystyk 2998: FREE(rel);
1.23 frystyk 2999: }
1.31 frystyk 3000: if (retry == 2 && ctrl->state == FTP_FAILURE)
3001: ctrl->state = FTP_ERROR;
1.23 frystyk 3002: break;
3003:
1.31 frystyk 3004: case FTP_GOT_DATA:
1.23 frystyk 3005: if (HTFTP_close_data_con(data))
1.31 frystyk 3006: ctrl->state = FTP_ERROR;
1.23 frystyk 3007: else {
3008: HTList_removeLastObject(ctrl->data_cons);
3009: if (!session) {
3010: if (!HTFTP_logout(ctrl)) {
1.31 frystyk 3011: ctrl->state = FTP_IDLE;
1.23 frystyk 3012: status = HT_LOADED;
3013: } else
1.31 frystyk 3014: ctrl->state = FTP_ERROR;
1.23 frystyk 3015: } else {
1.31 frystyk 3016: ctrl->state = FTP_LOGGED_IN; /*Ready for next request*/
1.23 frystyk 3017: return HT_LOADED;
3018: }
3019: break;
3020: }
3021: break;
3022:
1.31 frystyk 3023: case FTP_ERROR:
1.30 luotonen 3024: {
1.32 frystyk 3025: if (ctrl->reply && ctrl->reply->data) {
1.33 frystyk 3026: HTFTPParseError(&ctrl->reply);
3027: HTErrorAdd(request, ERR_FATAL, NO, HTERR_FTP_SERVER,
3028: (void *) ctrl->reply->data,
3029: ctrl->reply->size-1, "HTLoadFTP");
1.32 frystyk 3030: } else {
1.33 frystyk 3031: char *hoststr = HTParse(url, "", PARSE_HOST);
3032: HTUnEscape(hoststr);
3033: HTErrorAdd(request, ERR_FATAL, NO,
3034: HTERR_FTP_NO_RESPONSE,
3035: (void *) hoststr, strlen(hoststr),
3036: "HTLoadFTP");
3037: free(hoststr);
1.32 frystyk 3038: }
1.30 luotonen 3039: HTFTP_abort_ctrl_con(ctrl);
1.33 frystyk 3040: status = -1;
3041: goto endfunc;
1.30 luotonen 3042: }
1.23 frystyk 3043: break;
3044:
3045: default:
3046: if (TRACE) fprintf(stderr, "FTP......... Unknown state, what happened?\n");
3047: break;
3048: }
3049: }
1.22 frystyk 3050:
1.23 frystyk 3051: /* The control connection is only closed if the load is atomic */
3052: if (!session && HTFTP_close_ctrl_con(ctrl))
3053: status = -1;
3054: }
1.33 frystyk 3055:
3056: endfunc:
1.23 frystyk 3057: if (status < 0 && status != HT_INTERRUPTED)
1.33 frystyk 3058: HTErrorAdd(request, ERR_FATAL, NO, HTERR_INTERNAL, NULL, 0,
3059: "HTLoadFTP");
3060: #ifdef OLD_CODE
1.23 frystyk 3061: return HTLoadError(request, 500,
1.32 frystyk 3062: "Document not loaded due to strange behavior from FTP-server");
1.33 frystyk 3063: #endif
3064: if (request->error_stack)
3065: HTErrorMsg(request);
1.23 frystyk 3066: return status;
3067: }
1.31 frystyk 3068:
3069: /* Protocol descriptors */
3070: GLOBALDEF PUBLIC HTProtocol HTFTP = { "ftp", HTLoadFTP, 0 , 0 };
1.22 frystyk 3071:
1.23 frystyk 3072: /* END OF MODULE */
1.22 frystyk 3073:
3074:
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