mirror of
https://github.com/moparisthebest/wget
synced 2024-07-03 16:38:41 -04:00
[svn] Removed because of unclear copyright statement and unwillingess of
original author to resolve this.
This commit is contained in:
janp
parent
164ccc9e41
commit
ae23f01b07
411
src/ftpparse.c
411
src/ftpparse.c
@ -1,411 +0,0 @@
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/* This file is not part of Wget proper, but is included here with the
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permission of the author. If you wish to use Wget without
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ftpparse, undefine HAVE_FTPPARSE in ftp-ls.c. */
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/* ftpparse.c, ftpparse.h: library for parsing FTP LIST responses
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D. J. Bernstein, djb@pobox.com
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19970712 (doc updated 19970810)
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Commercial use is fine, if you let me know what programs you're using this in.
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Currently covered:
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EPLF.
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UNIX ls, with or without gid.
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Microsoft FTP Service.
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Windows NT FTP Server.
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VMS.
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WFTPD (DOS).
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NetPresenz (Mac).
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NetWare.
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Definitely not covered:
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Long VMS filenames, with information split across two lines.
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NCSA Telnet FTP server. Has LIST = NLST (and bad NLST for directories).
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Written for maximum portability, but tested only under UNIX so far. */
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#include <time.h>
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#include "ftpparse.h"
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static long totai(year,month,mday)
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long year;
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long month;
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long mday;
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{
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/* adapted from datetime_untai() */
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/* about 100x faster than typical mktime() */
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long result;
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if (month >= 2) month -= 2;
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else { month += 10; --year; }
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result = (mday - 1) * 10 + 5 + 306 * month;
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result /= 10;
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if (result == 365) { year -= 3; result = 1460; }
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else result += 365 * (year % 4);
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year /= 4;
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result += 1461 * (year % 25);
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year /= 25;
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if (result == 36524) { year -= 3; result = 146096; }
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else { result += 36524 * (year % 4); }
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year /= 4;
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result += 146097 * (year - 5);
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result += 11017;
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return result * 86400;
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}
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static int flagneedbase = 1;
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static time_t base; /* time() value on this OS at the beginning of 1970 TAI */
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static long now; /* current time */
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static int flagneedcurrentyear = 1;
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static long currentyear; /* approximation to current year */
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static void initbase()
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{
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struct tm *t;
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if (!flagneedbase) return;
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base = 0;
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t = gmtime(&base);
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base = -(totai(t->tm_year + 1900,t->tm_mon,t->tm_mday) + t->tm_hour * 3600 + t->tm_min * 60 + t->tm_sec);
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/* time_t is assumed to be measured in TAI seconds. */
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/* base may be slightly off if time_t is measured in UTC seconds. */
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/* Typical software naively claims to use UTC but actually uses TAI. */
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flagneedbase = 0;
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}
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static void initnow()
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{
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long day;
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long year;
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initbase();
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now = time((time_t *) 0) - base;
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if (flagneedcurrentyear) {
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/* adapted from datetime_tai() */
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day = now / 86400;
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if ((now % 86400) < 0) --day;
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day -= 11017;
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year = 5 + day / 146097;
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day = day % 146097;
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if (day < 0) { day += 146097; --year; }
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year *= 4;
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if (day == 146096) { year += 3; day = 36524; }
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else { year += day / 36524; day %= 36524; }
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year *= 25;
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year += day / 1461;
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day %= 1461;
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year *= 4;
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if (day == 1460) { year += 3; day = 365; }
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else { year += day / 365; day %= 365; }
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day *= 10;
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if ((day + 5) / 306 >= 10) ++year;
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currentyear = year;
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flagneedcurrentyear = 0;
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}
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}
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/* UNIX ls does not show the year for dates in the last six months. */
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/* So we have to guess the year. */
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/* Apparently NetWare uses ``twelve months'' instead of ``six months''; ugh. */
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/* Some versions of ls also fail to show the year for future dates. */
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static long guesstai(month,mday)
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long month;
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long mday;
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{
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long year;
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long t;
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initnow();
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for (year = currentyear - 1;year < currentyear + 100;++year) {
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t = totai(year,month,mday);
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if (now - t < 350 * 86400)
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return t;
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}
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}
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static int check(buf,monthname)
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char *buf;
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char *monthname;
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{
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if ((buf[0] != monthname[0]) && (buf[0] != monthname[0] - 32)) return 0;
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if ((buf[1] != monthname[1]) && (buf[1] != monthname[1] - 32)) return 0;
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if ((buf[2] != monthname[2]) && (buf[2] != monthname[2] - 32)) return 0;
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return 1;
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}
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static char *months[12] = {
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"jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec"
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} ;
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static int getmonth(buf,len)
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char *buf;
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int len;
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{
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int i;
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if (len == 3)
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for (i = 0;i < 12;++i)
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if (check(buf,months[i])) return i;
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return -1;
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}
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static long getlong(buf,len)
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char *buf;
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int len;
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{
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long u = 0;
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while (len-- > 0)
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u = u * 10 + (*buf++ - '0');
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return u;
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}
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int ftpparse(fp,buf,len)
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struct ftpparse *fp;
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char *buf;
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int len;
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{
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int i;
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int j;
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int state;
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long size;
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long year;
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long month;
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long mday;
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long hour;
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long minute;
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fp->name = 0;
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fp->namelen = 0;
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fp->flagtrycwd = 0;
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fp->flagtryretr = 0;
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fp->sizetype = FTPPARSE_SIZE_UNKNOWN;
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fp->size = 0;
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fp->mtimetype = FTPPARSE_MTIME_UNKNOWN;
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fp->mtime = 0;
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fp->idtype = FTPPARSE_ID_UNKNOWN;
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fp->id = 0;
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fp->idlen = 0;
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if (len < 2) /* an empty name in EPLF, with no info, could be 2 chars */
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return 0;
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switch(*buf) {
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/* see http://pobox.com/~djb/proto/eplf.txt */
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/* "+i8388621.29609,m824255902,/,\tdev" */
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/* "+i8388621.44468,m839956783,r,s10376,\tRFCEPLF" */
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case '+':
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i = 1;
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for (j = 1;j < len;++j) {
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if (buf[j] == 9) {
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fp->name = buf + j + 1;
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fp->namelen = len - j - 1;
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return 1;
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}
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if (buf[j] == ',') {
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switch(buf[i]) {
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case '/':
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fp->flagtrycwd = 1;
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break;
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case 'r':
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fp->flagtryretr = 1;
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break;
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case 's':
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fp->sizetype = FTPPARSE_SIZE_BINARY;
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fp->size = getlong(buf + i + 1,j - i - 1);
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break;
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case 'm':
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fp->mtimetype = FTPPARSE_MTIME_LOCAL;
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initbase();
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fp->mtime = base + getlong(buf + i + 1,j - i - 1);
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break;
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case 'i':
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fp->idtype = FTPPARSE_ID_FULL;
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fp->id = buf + i + 1;
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fp->idlen = j - i - 1;
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}
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i = j + 1;
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}
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}
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return 0;
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/* UNIX-style listing, without inum and without blocks */
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/* "-rw-r--r-- 1 root other 531 Jan 29 03:26 README" */
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/* "dr-xr-xr-x 2 root other 512 Apr 8 1994 etc" */
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/* "dr-xr-xr-x 2 root 512 Apr 8 1994 etc" */
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/* "lrwxrwxrwx 1 root other 7 Jan 25 00:17 bin -> usr/bin" */
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/* Also produced by Microsoft's FTP servers for Windows: */
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/* "---------- 1 owner group 1803128 Jul 10 10:18 ls-lR.Z" */
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/* "d--------- 1 owner group 0 May 9 19:45 Softlib" */
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/* Also WFTPD for MSDOS: */
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/* "-rwxrwxrwx 1 noone nogroup 322 Aug 19 1996 message.ftp" */
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/* Also NetWare: */
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/* "d [R----F--] supervisor 512 Jan 16 18:53 login" */
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/* "- [R----F--] rhesus 214059 Oct 20 15:27 cx.exe" */
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/* Also NetPresenz for the Mac: */
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/* "-------r-- 326 1391972 1392298 Nov 22 1995 MegaPhone.sit" */
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/* "drwxrwxr-x folder 2 May 10 1996 network" */
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case 'b':
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case 'c':
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case 'd':
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case 'l':
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case 'p':
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case 's':
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case '-':
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if (*buf == 'd') fp->flagtrycwd = 1;
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if (*buf == '-') fp->flagtryretr = 1;
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if (*buf == 'l') fp->flagtrycwd = fp->flagtryretr = 1;
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state = 1;
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i = 0;
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for (j = 1;j < len;++j)
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if ((buf[j] == ' ') && (buf[j - 1] != ' ')) {
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switch(state) {
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case 1: /* skipping perm */
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state = 2;
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break;
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case 2: /* skipping nlink */
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state = 3;
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if ((j - i == 6) && (buf[i] == 'f')) /* for NetPresenz */
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state = 4;
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break;
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case 3: /* skipping uid */
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state = 4;
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break;
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case 4: /* getting tentative size */
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size = getlong(buf + i,j - i);
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state = 5;
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break;
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case 5: /* searching for month, otherwise getting tentative size */
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month = getmonth(buf + i,j - i);
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if (month >= 0)
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state = 6;
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else
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size = getlong(buf + i,j - i);
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break;
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case 6: /* have size and month */
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mday = getlong(buf + i,j - i);
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state = 7;
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break;
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case 7: /* have size, month, mday */
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if ((j - i == 4) && (buf[i + 1] == ':')) {
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hour = getlong(buf + i,1);
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minute = getlong(buf + i + 2,2);
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fp->mtimetype = FTPPARSE_MTIME_REMOTEMINUTE;
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initbase();
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fp->mtime = base + guesstai(month,mday) + hour * 3600 + minute * 60;
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} else if ((j - i == 5) && (buf[i + 2] == ':')) {
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hour = getlong(buf + i,2);
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minute = getlong(buf + i + 3,2);
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fp->mtimetype = FTPPARSE_MTIME_REMOTEMINUTE;
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initbase();
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fp->mtime = base + guesstai(month,mday) + hour * 3600 + minute * 60;
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}
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else if (j - i >= 4) {
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year = getlong(buf + i,j - i);
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fp->mtimetype = FTPPARSE_MTIME_REMOTEDAY;
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initbase();
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fp->mtime = base + totai(year,month,mday);
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}
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else
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return 0;
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fp->name = buf + j + 1;
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fp->namelen = len - j - 1;
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state = 8;
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break;
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case 8: /* twiddling thumbs */
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break;
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}
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i = j + 1;
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while ((i < len) && (buf[i] == ' ')) ++i;
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}
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if (state != 8)
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return 0;
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fp->size = size;
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fp->sizetype = FTPPARSE_SIZE_ASCII;
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if (*buf == 'l')
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for (i = 0;i + 3 < fp->namelen;++i)
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if (fp->name[i] == ' ')
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if (fp->name[i + 1] == '-')
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if (fp->name[i + 2] == '>')
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if (fp->name[i + 3] == ' ') {
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fp->namelen = i;
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break;
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}
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/* eliminate extra NetWare spaces */
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if ((buf[1] == ' ') || (buf[1] == '['))
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if (fp->namelen > 3)
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if (fp->name[0] == ' ')
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if (fp->name[1] == ' ')
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if (fp->name[2] == ' ') {
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fp->name += 3;
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fp->namelen -= 3;
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}
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return 1;
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}
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/* MultiNet (some spaces removed from examples) */
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/* "00README.TXT;1 2 30-DEC-1996 17:44 [SYSTEM] (RWED,RWED,RE,RE)" */
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/* "CORE.DIR;1 1 8-SEP-1996 16:09 [SYSTEM] (RWE,RWE,RE,RE)" */
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/* and non-MutliNet VMS: */
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/* "CII-MANUAL.TEX;1 213/216 29-JAN-1996 03:33:12 [ANONYMOU,ANONYMOUS] (RWED,RWED,,)" */
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for (i = 0;i < len;++i)
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if (buf[i] == ';')
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break;
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if (i < len) {
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fp->name = buf;
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fp->namelen = i;
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if (i > 4)
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if (buf[i - 4] == '.')
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if (buf[i - 3] == 'D')
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if (buf[i - 2] == 'I')
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if (buf[i - 1] == 'R') {
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fp->namelen -= 4;
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fp->flagtrycwd = 1;
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}
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if (!fp->flagtrycwd)
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fp->flagtryretr = 1;
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while (buf[i] != ' ') if (++i == len) return 0;
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while (buf[i] == ' ') if (++i == len) return 0;
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while (buf[i] != ' ') if (++i == len) return 0;
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||||
while (buf[i] == ' ') if (++i == len) return 0;
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j = i;
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while (buf[j] != '-') if (++j == len) return 0;
|
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mday = getlong(buf + i,j - i);
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while (buf[j] == '-') if (++j == len) return 0;
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||||
i = j;
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while (buf[j] != '-') if (++j == len) return 0;
|
||||
month = getmonth(buf + i,j - i);
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if (month < 0) return 0;
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||||
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);
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while (buf[j] == ':') if (++j == len) return 0;
|
||||
i = j;
|
||||
while ((buf[j] != ':') && (buf[j] != ' ')) if (++j == len) return 0;
|
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minute = getlong(buf + i,j - i);
|
||||
|
||||
fp->mtimetype = FTPPARSE_MTIME_REMOTEMINUTE;
|
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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) */
|
||||
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||||
return 0;
|
||||
}
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@ -1,51 +0,0 @@
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#ifndef FTPPARSE_H
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#define FTPPARSE_H
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||||
/*
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||||
ftpparse(&fp,buf,len) tries to parse one line of LIST output.
|
||||
|
||||
The line is an array of len characters stored in buf.
|
||||
It should not include the terminating CR LF; so buf[len] is typically CR.
|
||||
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||||
If ftpparse() can't find a filename, it returns 0.
|
||||
|
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If ftpparse() can find a filename, it fills in fp and returns 1.
|
||||
fp is a struct ftpparse, defined below.
|
||||
The name is an array of fp.namelen characters stored in fp.name;
|
||||
fp.name points somewhere within buf.
|
||||
*/
|
||||
|
||||
struct ftpparse {
|
||||
char *name; /* not necessarily 0-terminated */
|
||||
int namelen;
|
||||
int flagtrycwd; /* 0 if cwd is definitely pointless, 1 otherwise */
|
||||
int flagtryretr; /* 0 if retr is definitely pointless, 1 otherwise */
|
||||
int sizetype;
|
||||
long size; /* number of octets */
|
||||
int mtimetype;
|
||||
time_t mtime; /* modification time */
|
||||
int idtype;
|
||||
char *id; /* not necessarily 0-terminated */
|
||||
int idlen;
|
||||
} ;
|
||||
|
||||
#define FTPPARSE_SIZE_UNKNOWN 0
|
||||
#define FTPPARSE_SIZE_BINARY 1 /* size is the number of octets in TYPE I */
|
||||
#define FTPPARSE_SIZE_ASCII 2 /* size is the number of octets in TYPE A */
|
||||
|
||||
#define FTPPARSE_MTIME_UNKNOWN 0
|
||||
#define FTPPARSE_MTIME_LOCAL 1 /* time is correct */
|
||||
#define FTPPARSE_MTIME_REMOTEMINUTE 2 /* time zone and secs are unknown */
|
||||
#define FTPPARSE_MTIME_REMOTEDAY 3 /* time zone and time of day are unknown */
|
||||
/*
|
||||
When a time zone is unknown, it is assumed to be GMT. You may want
|
||||
to use localtime() for LOCAL times, along with an indication that the
|
||||
time is correct in the local time zone, and gmtime() for REMOTE* times.
|
||||
*/
|
||||
|
||||
#define FTPPARSE_ID_UNKNOWN 0
|
||||
#define FTPPARSE_ID_FULL 1 /* unique identifier for files on this FTP server */
|
||||
|
||||
extern int ftpparse();
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user