mirror of
https://github.com/dabonetn/linapple-pie.git
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508 lines
15 KiB
C++
508 lines
15 KiB
C++
// This sourse includes a FTPPARSE:
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/* ftpparse.c, ftpparse.h: library for parsing FTP LIST responses
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20001223
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D. J. Bernstein, djb@cr.yp.to
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http://cr.yp.to/ftpparse.html
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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 formats:
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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.
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NetPresenz (Mac).
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NetWare.
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MSDOS.
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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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*/
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#include "stdafx.h"
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#include <time.h>
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#include <stdio.h>
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#include <curl/curl.h>
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#include "ftpparse.h"
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struct FtpFile {
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const char *filename;
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FILE *stream;
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};
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static size_t my_fwrite(void *buffer, size_t size, size_t nmemb, void *stream) {
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struct FtpFile *out=(struct FtpFile *)stream;
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if(out && !out->stream) {
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/* open file for writing */
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out->stream=fopen(out->filename, "wb");
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if(!out->stream)
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return -1; /* failure, can't open file to write */
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}
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return fwrite(buffer, size, nmemb, out->stream);
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}
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CURLcode ftp_get(const char *ftp_path, const char *local_path) {
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// Download file from ftp_path to local_path
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CURLcode res;
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struct FtpFile ftpfile;// = {
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// char *fname, /* name to store the file as if succesful */
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// NULL
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// };
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ftpfile.stream = NULL;
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ftpfile.filename = local_path; // where to download a file
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curl_easy_setopt(g_curl, CURLOPT_URL, ftp_path);
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/* Define our callback to get called when there's data to be written */
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curl_easy_setopt(g_curl, CURLOPT_WRITEFUNCTION, my_fwrite);
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curl_easy_setopt(g_curl, CURLOPT_WRITEDATA, &ftpfile);
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curl_easy_setopt(g_curl, CURLOPT_USERPWD, g_sFTPUserPass);
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/* Switch on full protocol/debug output */
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// curl_easy_setopt(g_curl, CURLOPT_VERBOSE, 1L);
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res = curl_easy_perform(g_curl);
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if(res != CURLE_OK) {
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/* we failed */
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printf("Curl error with errorcode = %d\n", res);
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}
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if(ftpfile.stream)
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fclose(ftpfile.stream); /* close the local file */
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return res;
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}
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/////////////////////////////////////////////////////////////
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/* FTP Parse */
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/////////////////////////////////////////////////////////////
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static long totai(long year,long month,long mday)
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{
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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(void)
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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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/* assumes the right time_t, counting seconds. */
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/* base may be slightly off if time_t counts non-leap seconds. */
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flagneedbase = 0;
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}
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static void initnow(void)
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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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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(long month,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(char *buf,const 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 const 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(char *buf,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(char *buf,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(struct ftpparse *fp,char *buf,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_BINARY;
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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;
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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;
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i = j;
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while (buf[j] != ' ') if (++j == len) return 0;
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year = 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;
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hour = 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] != ':') && (buf[j] != ' ')) if (++j == len) return 0;
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minute = getlong(buf + i,j - i);
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fp->mtimetype = FTPPARSE_MTIME_REMOTEMINUTE;
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initbase();
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fp->mtime = base + totai(year,month,mday) + hour * 3600 + minute * 60;
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return 1;
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}
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/* MSDOS format */
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/* 04-27-00 09:09PM <DIR> licensed */
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/* 07-18-00 10:16AM <DIR> pub */
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/* 04-14-00 03:47PM 589 readme.htm */
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if ((*buf >= '0') && (*buf <= '9')) {
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i = 0;
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j = 0;
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while (buf[j] != '-') if (++j == len) return 0;
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month = getlong(buf + i,j - i) - 1;
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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;
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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;
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year = getlong(buf + i,j - i);
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if (year < 50) year += 2000;
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if (year < 1000) year += 1900;
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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;
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hour = 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] != 'A') && (buf[j] != 'P')) if (++j == len) return 0;
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minute = getlong(buf + i,j - i);
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if (hour == 12) hour = 0;
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if (buf[j] == 'A') if (++j == len) return 0;
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if (buf[j] == 'P') { hour += 12; if (++j == len) return 0; }
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if (buf[j] == 'M') if (++j == len) return 0;
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while (buf[j] == ' ') if (++j == len) return 0;
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if (buf[j] == '<') {
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fp->flagtrycwd = 1;
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while (buf[j] != ' ') if (++j == len) return 0;
|
|
}
|
|
else {
|
|
i = j;
|
|
while (buf[j] != ' ') if (++j == len) return 0;
|
|
fp->size = getlong(buf + i,j - i);
|
|
fp->sizetype = FTPPARSE_SIZE_BINARY;
|
|
fp->flagtryretr = 1;
|
|
}
|
|
while (buf[j] == ' ') if (++j == len) return 0;
|
|
|
|
fp->name = buf + j;
|
|
fp->namelen = len - j;
|
|
|
|
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;
|
|
}
|
|
|
|
|