+++ /dev/null
-/* This file is not part of Wget proper, but is included here with the
- permission of the author. If you wish to use Wget without
- ftpparse, undefine HAVE_FTPPARSE in ftp-ls.c. */
-
-/* ftpparse.c, ftpparse.h: library for parsing FTP LIST responses
-D. J. Bernstein, djb@pobox.com
-19970712 (doc updated 19970810)
-Commercial use is fine, if you let me know what programs you're using this in.
-
-Currently covered:
-EPLF.
-UNIX ls, with or without gid.
-Microsoft FTP Service.
-Windows NT FTP Server.
-VMS.
-WFTPD (DOS).
-NetPresenz (Mac).
-NetWare.
-
-Definitely not covered:
-Long VMS filenames, with information split across two lines.
-NCSA Telnet FTP server. Has LIST = NLST (and bad NLST for directories).
-
-Written for maximum portability, but tested only under UNIX so far. */
-
-#include <time.h>
-#include "ftpparse.h"
-
-static long totai(year,month,mday)
-long year;
-long month;
-long mday;
-{
- /* adapted from datetime_untai() */
- /* about 100x faster than typical mktime() */
- long result;
- if (month >= 2) month -= 2;
- else { month += 10; --year; }
- result = (mday - 1) * 10 + 5 + 306 * month;
- result /= 10;
- if (result == 365) { year -= 3; result = 1460; }
- else result += 365 * (year % 4);
- year /= 4;
- result += 1461 * (year % 25);
- year /= 25;
- if (result == 36524) { year -= 3; result = 146096; }
- else { result += 36524 * (year % 4); }
- year /= 4;
- result += 146097 * (year - 5);
- result += 11017;
- return result * 86400;
-}
-
-static int flagneedbase = 1;
-static time_t base; /* time() value on this OS at the beginning of 1970 TAI */
-static long now; /* current time */
-static int flagneedcurrentyear = 1;
-static long currentyear; /* approximation to current year */
-
-static void initbase()
-{
- struct tm *t;
- if (!flagneedbase) return;
-
- base = 0;
- t = gmtime(&base);
- base = -(totai(t->tm_year + 1900,t->tm_mon,t->tm_mday) + t->tm_hour * 3600 + t->tm_min * 60 + t->tm_sec);
- /* time_t is assumed to be measured in TAI seconds. */
- /* base may be slightly off if time_t is measured in UTC seconds. */
- /* Typical software naively claims to use UTC but actually uses TAI. */
- flagneedbase = 0;
-}
-
-static void initnow()
-{
- long day;
- long year;
-
- initbase();
- now = time((time_t *) 0) - base;
-
- if (flagneedcurrentyear) {
- /* adapted from datetime_tai() */
- day = now / 86400;
- if ((now % 86400) < 0) --day;
- day -= 11017;
- year = 5 + day / 146097;
- day = day % 146097;
- if (day < 0) { day += 146097; --year; }
- year *= 4;
- if (day == 146096) { year += 3; day = 36524; }
- else { year += day / 36524; day %= 36524; }
- year *= 25;
- year += day / 1461;
- day %= 1461;
- year *= 4;
- if (day == 1460) { year += 3; day = 365; }
- else { year += day / 365; day %= 365; }
- day *= 10;
- if ((day + 5) / 306 >= 10) ++year;
- currentyear = year;
- flagneedcurrentyear = 0;
- }
-}
-
-/* UNIX ls does not show the year for dates in the last six months. */
-/* So we have to guess the year. */
-/* Apparently NetWare uses ``twelve months'' instead of ``six months''; ugh. */
-/* Some versions of ls also fail to show the year for future dates. */
-static long guesstai(month,mday)
-long month;
-long mday;
-{
- long year;
- long t;
-
- initnow();
-
- for (year = currentyear - 1;year < currentyear + 100;++year) {
- t = totai(year,month,mday);
- if (now - t < 350 * 86400)
- return t;
- }
-}
-
-static int check(buf,monthname)
-char *buf;
-char *monthname;
-{
- if ((buf[0] != monthname[0]) && (buf[0] != monthname[0] - 32)) return 0;
- if ((buf[1] != monthname[1]) && (buf[1] != monthname[1] - 32)) return 0;
- if ((buf[2] != monthname[2]) && (buf[2] != monthname[2] - 32)) return 0;
- return 1;
-}
-
-static char *months[12] = {
- "jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec"
-} ;
-
-static int getmonth(buf,len)
-char *buf;
-int len;
-{
- int i;
- if (len == 3)
- for (i = 0;i < 12;++i)
- if (check(buf,months[i])) return i;
- return -1;
-}
-
-static long getlong(buf,len)
-char *buf;
-int len;
-{
- long u = 0;
- while (len-- > 0)
- u = u * 10 + (*buf++ - '0');
- return u;
-}
-
-int ftpparse(fp,buf,len)
-struct ftpparse *fp;
-char *buf;
-int len;
-{
- int i;
- int j;
- int state;
- long size;
- long year;
- long month;
- long mday;
- long hour;
- long minute;
-
- fp->name = 0;
- fp->namelen = 0;
- fp->flagtrycwd = 0;
- fp->flagtryretr = 0;
- fp->sizetype = FTPPARSE_SIZE_UNKNOWN;
- fp->size = 0;
- fp->mtimetype = FTPPARSE_MTIME_UNKNOWN;
- fp->mtime = 0;
- fp->idtype = FTPPARSE_ID_UNKNOWN;
- fp->id = 0;
- fp->idlen = 0;
-
- if (len < 2) /* an empty name in EPLF, with no info, could be 2 chars */
- return 0;
-
- switch(*buf) {
- /* see http://pobox.com/~djb/proto/eplf.txt */
- /* "+i8388621.29609,m824255902,/,\tdev" */
- /* "+i8388621.44468,m839956783,r,s10376,\tRFCEPLF" */
- case '+':
- i = 1;
- for (j = 1;j < len;++j) {
- if (buf[j] == 9) {
- fp->name = buf + j + 1;
- fp->namelen = len - j - 1;
- return 1;
- }
- if (buf[j] == ',') {
- switch(buf[i]) {
- case '/':
- fp->flagtrycwd = 1;
- break;
- case 'r':
- fp->flagtryretr = 1;
- break;
- case 's':
- fp->sizetype = FTPPARSE_SIZE_BINARY;
- fp->size = getlong(buf + i + 1,j - i - 1);
- break;
- case 'm':
- fp->mtimetype = FTPPARSE_MTIME_LOCAL;
- initbase();
- fp->mtime = base + getlong(buf + i + 1,j - i - 1);
- break;
- case 'i':
- fp->idtype = FTPPARSE_ID_FULL;
- fp->id = buf + i + 1;
- fp->idlen = j - i - 1;
- }
- i = j + 1;
- }
- }
- return 0;
-
- /* UNIX-style listing, without inum and without blocks */
- /* "-rw-r--r-- 1 root other 531 Jan 29 03:26 README" */
- /* "dr-xr-xr-x 2 root other 512 Apr 8 1994 etc" */
- /* "dr-xr-xr-x 2 root 512 Apr 8 1994 etc" */
- /* "lrwxrwxrwx 1 root other 7 Jan 25 00:17 bin -> usr/bin" */
- /* Also produced by Microsoft's FTP servers for Windows: */
- /* "---------- 1 owner group 1803128 Jul 10 10:18 ls-lR.Z" */
- /* "d--------- 1 owner group 0 May 9 19:45 Softlib" */
- /* Also WFTPD for MSDOS: */
- /* "-rwxrwxrwx 1 noone nogroup 322 Aug 19 1996 message.ftp" */
- /* Also NetWare: */
- /* "d [R----F--] supervisor 512 Jan 16 18:53 login" */
- /* "- [R----F--] rhesus 214059 Oct 20 15:27 cx.exe" */
- /* Also NetPresenz for the Mac: */
- /* "-------r-- 326 1391972 1392298 Nov 22 1995 MegaPhone.sit" */
- /* "drwxrwxr-x folder 2 May 10 1996 network" */
- case 'b':
- case 'c':
- case 'd':
- case 'l':
- case 'p':
- case 's':
- case '-':
-
- if (*buf == 'd') fp->flagtrycwd = 1;
- if (*buf == '-') fp->flagtryretr = 1;
- if (*buf == 'l') fp->flagtrycwd = fp->flagtryretr = 1;
-
- state = 1;
- i = 0;
- for (j = 1;j < len;++j)
- if ((buf[j] == ' ') && (buf[j - 1] != ' ')) {
- switch(state) {
- case 1: /* skipping perm */
- state = 2;
- break;
- case 2: /* skipping nlink */
- state = 3;
- if ((j - i == 6) && (buf[i] == 'f')) /* for NetPresenz */
- state = 4;
- break;
- case 3: /* skipping uid */
- state = 4;
- break;
- case 4: /* getting tentative size */
- size = getlong(buf + i,j - i);
- state = 5;
- break;
- case 5: /* searching for month, otherwise getting tentative size */
- month = getmonth(buf + i,j - i);
- if (month >= 0)
- state = 6;
- else
- size = getlong(buf + i,j - i);
- break;
- case 6: /* have size and month */
- mday = getlong(buf + i,j - i);
- state = 7;
- break;
- case 7: /* have size, month, mday */
- if ((j - i == 4) && (buf[i + 1] == ':')) {
- hour = getlong(buf + i,1);
- minute = getlong(buf + i + 2,2);
- fp->mtimetype = FTPPARSE_MTIME_REMOTEMINUTE;
- initbase();
- fp->mtime = base + guesstai(month,mday) + hour * 3600 + minute * 60;
- } else if ((j - i == 5) && (buf[i + 2] == ':')) {
- hour = getlong(buf + i,2);
- minute = getlong(buf + i + 3,2);
- fp->mtimetype = FTPPARSE_MTIME_REMOTEMINUTE;
- initbase();
- fp->mtime = base + guesstai(month,mday) + hour * 3600 + minute * 60;
- }
- else if (j - i >= 4) {
- year = getlong(buf + i,j - i);
- fp->mtimetype = FTPPARSE_MTIME_REMOTEDAY;
- initbase();
- fp->mtime = base + totai(year,month,mday);
- }
- else
- return 0;
- fp->name = buf + j + 1;
- fp->namelen = len - j - 1;
- state = 8;
- break;
- case 8: /* twiddling thumbs */
- break;
- }
- i = j + 1;
- while ((i < len) && (buf[i] == ' ')) ++i;
- }
-
- if (state != 8)
- return 0;
-
- fp->size = size;
- fp->sizetype = FTPPARSE_SIZE_ASCII;
-
- if (*buf == 'l')
- for (i = 0;i + 3 < fp->namelen;++i)
- if (fp->name[i] == ' ')
- if (fp->name[i + 1] == '-')
- if (fp->name[i + 2] == '>')
- if (fp->name[i + 3] == ' ') {
- fp->namelen = i;
- break;
- }
-
- /* eliminate extra NetWare spaces */
- if ((buf[1] == ' ') || (buf[1] == '['))
- if (fp->namelen > 3)
- if (fp->name[0] == ' ')
- if (fp->name[1] == ' ')
- if (fp->name[2] == ' ') {
- fp->name += 3;
- fp->namelen -= 3;
- }
-
- return 1;
- }
-
- /* MultiNet (some spaces removed from examples) */
- /* "00README.TXT;1 2 30-DEC-1996 17:44 [SYSTEM] (RWED,RWED,RE,RE)" */
- /* "CORE.DIR;1 1 8-SEP-1996 16:09 [SYSTEM] (RWE,RWE,RE,RE)" */
- /* and non-MutliNet VMS: */
- /* "CII-MANUAL.TEX;1 213/216 29-JAN-1996 03:33:12 [ANONYMOU,ANONYMOUS] (RWED,RWED,,)" */
- for (i = 0;i < len;++i)
- if (buf[i] == ';')
- break;
- if (i < len) {
- fp->name = buf;
- fp->namelen = i;
- if (i > 4)
- if (buf[i - 4] == '.')
- if (buf[i - 3] == 'D')
- if (buf[i - 2] == 'I')
- if (buf[i - 1] == 'R') {
- fp->namelen -= 4;
- fp->flagtrycwd = 1;
- }
- if (!fp->flagtrycwd)
- fp->flagtryretr = 1;
- while (buf[i] != ' ') if (++i == len) return 0;
- while (buf[i] == ' ') if (++i == len) return 0;
- while (buf[i] != ' ') if (++i == len) return 0;
- while (buf[i] == ' ') if (++i == len) return 0;
- j = i;
- while (buf[j] != '-') if (++j == len) return 0;
- mday = getlong(buf + i,j - i);
- while (buf[j] == '-') if (++j == len) return 0;
- i = j;
- while (buf[j] != '-') if (++j == len) return 0;
- month = getmonth(buf + i,j - i);
- if (month < 0) return 0;
- while (buf[j] == '-') if (++j == len) return 0;
- i = j;
- while (buf[j] != ' ') if (++j == len) return 0;
- year = getlong(buf + i,j - i);
- while (buf[j] == ' ') if (++j == len) return 0;
- i = j;
- while (buf[j] != ':') if (++j == len) return 0;
- hour = getlong(buf + i,j - i);
- while (buf[j] == ':') if (++j == len) return 0;
- i = j;
- while ((buf[j] != ':') && (buf[j] != ' ')) if (++j == len) return 0;
- minute = getlong(buf + i,j - i);
-
- fp->mtimetype = FTPPARSE_MTIME_REMOTEMINUTE;
- initbase();
- fp->mtime = base + totai(year,month,mday) + hour * 3600 + minute * 60;
-
- return 1;
- }
-
- /* Some useless lines, safely ignored: */
- /* "Total of 11 Files, 10966 Blocks." (VMS) */
- /* "total 14786" (UNIX) */
- /* "DISK$ANONFTP:[ANONYMOUS]" (VMS) */
- /* "Directory DISK$PCSA:[ANONYM]" (VMS) */
-
- return 0;
-}
projects / wget / commitdiff