/* Parsing FTP `ls' output.
- Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 2000, 2001
+ Free Software Foundation, Inc.
-This file is part of Wget.
+This file is part of GNU Wget.
-This program is free software; you can redistribute it and/or modify
+GNU Wget is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
-This program is distributed in the hope that it will be useful,
+GNU Wget is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
+along with Wget; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <config.h>
# include <unistd.h>
#endif
#include <sys/types.h>
-#include <ctype.h>
#include <errno.h>
#include "wget.h"
#include "ftp.h"
#include "url.h"
-/* Undef this if FTPPARSE is not available. In that case, Wget will
- still work with Unix FTP servers, which covers most cases. */
-
-#define HAVE_FTPPARSE
-
-#ifdef HAVE_FTPPARSE
-#include "ftpparse.h"
-#endif
-
/* Converts symbolic permissions to number-style ones, e.g. string
rwxr-xr-x to 755. For now, it knows nothing of
setuid/setgid/sticky. ACLs are ignored. */
}
+/* Cleans a line of text so that it can be consistently parsed. Destroys
+ <CR> and <LF> in case that thay occur at the end of the line and
+ replaces all <TAB> character with <SPACE>. Returns the length of the
+ modified line. */
+static int
+clean_line(char *line)
+{
+ int len = strlen (line);
+ if (!len) return 0;
+ if (line[len - 1] == '\n')
+ line[--len] = '\0';
+ if (line[len - 1] == '\r')
+ line[--len] = '\0';
+ for ( ; *line ; line++ ) if (*line == '\t') *line = ' ';
+ return len;
+}
+
/* Convert the Un*x-ish style directory listing stored in FILE to a
linked list of fileinfo (system-independent) entries. The contents
of FILE are considered to be produced by the standard Unix `ls -la'
The time stamps are stored in a separate variable, time_t
compatible (I hope). The timezones are ignored. */
static struct fileinfo *
-ftp_parse_unix_ls (const char *file)
+ftp_parse_unix_ls (const char *file, int ignore_perms)
{
FILE *fp;
static const char *months[] = {
/* Line loop to end of file: */
while ((line = read_whole_line (fp)))
{
- DEBUGP (("%s\n", line));
- len = strlen (line);
- /* Destroy <CR><LF> if present. */
- if (len && line[len - 1] == '\n')
- line[--len] = '\0';
- if (len && line[len - 1] == '\r')
- line[--len] = '\0';
-
+ len = clean_line (line);
/* Skip if total... */
if (!strncasecmp (line, "total", 5))
{
- free (line);
+ xfree (line);
continue;
}
/* Get the first token (permissions). */
tok = strtok (line, " ");
if (!tok)
{
- free (line);
+ xfree (line);
continue;
}
break;
default:
cur.type = FT_UNKNOWN;
- DEBUGP (("UNKOWN; "));
+ DEBUGP (("UNKNOWN; "));
break;
}
- cur.perms = symperms (tok + 1);
- DEBUGP (("perms %0o; ", cur.perms));
+ if (ignore_perms)
+ {
+ switch (cur.type)
+ {
+ case FT_PLAINFILE:
+ cur.perms = 0644;
+ break;
+ case FT_DIRECTORY:
+ cur.perms = 0755;
+ break;
+ default:
+ /*cur.perms = 1023;*/ /* #### What is this? --hniksic */
+ cur.perms = 0644;
+ }
+ DEBUGP (("implicit perms %0o; ", cur.perms));
+ }
+ else
+ {
+ cur.perms = symperms (tok + 1);
+ DEBUGP (("perms %0o; ", cur.perms));
+ }
- error = ignore = 0; /* Errnoeous and ignoring entries are
+ error = ignore = 0; /* Erroneous and ignoring entries are
treated equally for now. */
year = hour = min = sec = 0; /* Silence the compiler. */
month = day = 0;
DEBUGP (("Skipping.\n"));
FREE_MAYBE (cur.name);
FREE_MAYBE (cur.linkto);
- free (line);
+ xfree (line);
continue;
}
timestruct.tm_isdst = -1;
l->tstamp = mktime (×truct); /* store the time-stamp */
- free (line);
+ xfree (line);
}
fclose (fp);
return dir;
}
-#ifdef HAVE_FTPPARSE
-
-/* This is a "glue function" that connects the ftpparse interface to
- the interface Wget expects. ftpparse is used to parse listings
- from servers other than Unix, like those running VMS or NT. */
-
static struct fileinfo *
-ftp_parse_nonunix_ls (const char *file)
+ftp_parse_winnt_ls (const char *file)
{
FILE *fp;
int len;
+ int year, month, day; /* for time analysis */
+ int hour, min;
+ struct tm timestruct;
- char *line; /* tokenizer */
+ char *line, *tok; /* tokenizer */
struct fileinfo *dir, *l, cur; /* list creation */
fp = fopen (file, "rb");
/* Line loop to end of file: */
while ((line = read_whole_line (fp)))
{
- struct ftpparse fp;
+ len = clean_line (line);
+
+ /* Extracting name is a bit of black magic and we have to do it
+ before `strtok' inserted extra \0 characters in the line
+ string. For the moment let us just suppose that the name starts at
+ column 39 of the listing. This way we could also recognize
+ filenames that begin with a series of space characters (but who
+ really wants to use such filenames anyway?). */
+ if (len < 40) continue;
+ tok = line + 39;
+ cur.name = xstrdup(tok);
+ DEBUGP(("Name: '%s'\n", cur.name));
+
+ /* First column: mm-dd-yy. Should atoi() on the month fail, january
+ will be assumed. */
+ tok = strtok(line, "-");
+ month = atoi(tok) - 1;
+ if (month < 0) month = 0;
+ tok = strtok(NULL, "-");
+ day = atoi(tok);
+ tok = strtok(NULL, " ");
+ year = atoi(tok);
+ /* Assuming the epoch starting at 1.1.1970 */
+ if (year <= 70) year += 100;
+
+ /* Second column: hh:mm[AP]M, listing does not contain value for
+ seconds */
+ tok = strtok(NULL, ":");
+ hour = atoi(tok);
+ tok = strtok(NULL, "M");
+ min = atoi(tok);
+ /* Adjust hour from AM/PM. Just for the record, the sequence goes
+ 11:00AM, 12:00PM, 01:00PM ... 11:00PM, 12:00AM, 01:00AM . */
+ tok+=2;
+ if (hour == 12) hour = 0;
+ if (*tok == 'P') hour += 12;
+
+ DEBUGP(("YYYY/MM/DD HH:MM - %d/%02d/%02d %02d:%02d\n",
+ year+1900, month, day, hour, min));
+
+ /* Build the time-stamp (copy & paste from above) */
+ timestruct.tm_sec = 0;
+ timestruct.tm_min = min;
+ timestruct.tm_hour = hour;
+ timestruct.tm_mday = day;
+ timestruct.tm_mon = month;
+ timestruct.tm_year = year;
+ timestruct.tm_wday = 0;
+ timestruct.tm_yday = 0;
+ timestruct.tm_isdst = -1;
+ cur.tstamp = mktime (×truct); /* store the time-stamp */
- DEBUGP (("%s\n", line));
- len = strlen (line);
- /* Destroy <CR><LF> if present. */
- if (len && line[len - 1] == '\n')
- line[--len] = '\0';
- if (len && line[len - 1] == '\r')
- line[--len] = '\0';
+ DEBUGP(("Timestamp: %ld\n", cur.tstamp));
- if (ftpparse(&fp, line, len))
- {
- cur.size = fp.size;
- cur.name = (char *)xmalloc (fp.namelen + 1);
- memcpy (cur.name, fp.name, fp.namelen);
- cur.name[fp.namelen] = '\0';
- DEBUGP (("%s\n", cur.name));
- /* No links on non-UNIX systems */
- cur.linkto = NULL;
- /* ftpparse won't tell us correct permisions. So lets just invent
- something. */
- if (fp.flagtrycwd)
- {
- cur.type = FT_DIRECTORY;
- cur.perms = 0755;
- }
- else
- {
- cur.type = FT_PLAINFILE;
- cur.perms = 0644;
- }
- if (!dir)
- {
- l = dir = (struct fileinfo *)xmalloc (sizeof (struct fileinfo));
- memcpy (l, &cur, sizeof (cur));
- l->prev = l->next = NULL;
- }
- else
- {
- cur.prev = l;
- l->next = (struct fileinfo *)xmalloc (sizeof (struct fileinfo));
- l = l->next;
- memcpy (l, &cur, sizeof (cur));
- l->next = NULL;
- }
- l->tstamp = fp.mtime;
- }
+ /* Third column: Either file length, or <DIR>. We also set the
+ permissions (guessed as 0644 for plain files and 0755 for
+ directories as the listing does not give us a clue) and filetype
+ here. */
+ tok = strtok(NULL, " ");
+ while (*tok == '\0') tok = strtok(NULL, " ");
+ if (*tok == '<')
+ {
+ cur.type = FT_DIRECTORY;
+ cur.size = 0;
+ cur.perms = 0755;
+ DEBUGP(("Directory\n"));
+ }
+ else
+ {
+ cur.type = FT_PLAINFILE;
+ cur.size = atoi(tok);
+ cur.perms = 0644;
+ DEBUGP(("File, size %ld bytes\n", cur.size));
+ }
+
+ cur.linkto = NULL;
+
+ /* And put everything into the linked list */
+ if (!dir)
+ {
+ l = dir = (struct fileinfo *)xmalloc (sizeof (struct fileinfo));
+ memcpy (l, &cur, sizeof (cur));
+ l->prev = l->next = NULL;
+ }
+ else
+ {
+ cur.prev = l;
+ l->next = (struct fileinfo *)xmalloc (sizeof (struct fileinfo));
+ l = l->next;
+ memcpy (l, &cur, sizeof (cur));
+ l->next = NULL;
+ }
- free (line);
+ xfree(line);
}
- fclose (fp);
+ fclose(fp);
return dir;
}
-#endif
-/* This function switches between the correct parsing routine
- depending on the SYSTEM_TYPE. If system type is ST_UNIX, we use
- our home-grown ftp_parse_unix_ls; otherwise, we use our interface
- to ftpparse, also known as ftp_parse_nonunix_ls. The system type
- should be based on the result of the "SYST" response of the FTP
- server. */
-
-struct fileinfo *
-ftp_parse_ls (const char *file, const enum stype system_type)
+/* Converts VMS symbolic permissions to number-style ones, e.g. string
+ RWED,RWE,RE to 755. "D" (delete) is taken to be equal to "W"
+ (write). Inspired by a patch of Stoyan Lekov <lekov@eda.bg>. */
+static int
+vmsperms (const char *s)
{
- if (system_type == ST_UNIX)
- {
- return ftp_parse_unix_ls (file);
- }
- else
+ int perms = 0;
+
+ do
{
-#ifdef HAVE_FTPPARSE
- return ftp_parse_nonunix_ls (file);
-#else
- /* #### Maybe log some warning here? */
- return ftp_parse_unix_ls (file);
-#endif
+ switch (*s) {
+ case ',': perms <<= 3; break;
+ case 'R': perms |= 4; break;
+ case 'W': perms |= 2; break;
+ case 'D': perms |= 2; break;
+ case 'E': perms |= 1; break;
+ default: DEBUGP(("wrong VMS permissons!\n"));
+ }
}
+ while (*++s);
+ return perms;
}
-\f
-/* Stuff for creating FTP index. */
-/* The function returns the pointer to the malloc-ed quoted version of
- string s. It will recognize and quote numeric and special graphic
- entities, as per RFC1866:
- `&' -> `&'
- `<' -> `<'
- `>' -> `>'
- `"' -> `"'
-
- No other entities are recognized or replaced. */
-static char *
-html_quote_string (const char *s)
+static struct fileinfo *
+ftp_parse_vms_ls (const char *file)
{
- const char *b = s;
- char *p, *res;
+ FILE *fp;
+ /* #### A third copy of more-or-less the same array ? */
+ static const char *months[] = {
+ "JAN", "FEB", "MAR", "APR", "MAY", "JUN",
+ "JUL", "AUG", "SEP", "OCT", "NOV", "DEC"
+ };
int i;
+ int year, month, day; /* for time analysis */
+ int hour, min, sec;
+ struct tm timestruct;
+
+ char *line, *tok; /* tokenizer */
+ struct fileinfo *dir, *l, cur; /* list creation */
- /* Pass through the string, and count the new size. */
- for (i = 0; *s; s++, i++)
+ fp = fopen (file, "rb");
+ if (!fp)
{
- if (*s == '&')
- i += 4; /* `amp;' */
- else if (*s == '<' || *s == '>')
- i += 3; /* `lt;' and `gt;' */
- else if (*s == '\"')
- i += 5; /* `quot;' */
+ logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno));
+ return NULL;
}
- res = (char *)xmalloc (i + 1);
- s = b;
- for (p = res; *s; s++)
+ dir = l = NULL;
+
+ /* Empty line */
+ read_whole_line (fp);
+ /* "Directory PUB$DEVICE[PUB]" */
+ read_whole_line (fp);
+ /* Empty line */
+ read_whole_line (fp);
+
+ /* Line loop to end of file: */
+ while ((line = read_whole_line (fp)))
{
- switch (*s)
+ char *p;
+ i = clean_line (line);
+ if (!i) break;
+
+ /* First column: Name. A bit of black magic again. The name my be
+ either ABCD.EXT or ABCD.EXT;NUM and it might be on a separate
+ line. Therefore we will first try to get the complete name
+ until the first space character; if it fails, we assume that the name
+ occupies the whole line. After that we search for the version
+ separator ";", we remove it and check the extension of the file;
+ extension .DIR denotes directory. */
+
+ tok = strtok(line, " ");
+ if (tok == NULL) tok = line;
+ DEBUGP(("file name: '%s'\n", tok));
+ for (p = tok ; *p && *p != ';' ; p++);
+ if (*p == ';') *p = '\0';
+ p = tok + strlen(tok) - 4;
+ if (!strcmp(p, ".DIR")) *p = '\0';
+ cur.name = xstrdup(tok);
+ DEBUGP(("Name: '%s'\n", cur.name));
+
+ /* If the name ends on .DIR or .DIR;#, it's a directory. We also set
+ the file size to zero as the listing does tell us only the size in
+ filesystem blocks - for an integrity check (when mirroring, for
+ example) we would need the size in bytes. */
+
+ if (! *p)
+ {
+ cur.type = FT_DIRECTORY;
+ cur.size = 0;
+ DEBUGP(("Directory\n"));
+ }
+ else
+ {
+ cur.type = FT_PLAINFILE;
+ DEBUGP(("File\n"));
+ }
+
+ cur.size = 0;
+
+ /* Second column, if exists, or the first column of the next line
+ contain file size in blocks. We will skip it. */
+
+ tok = strtok(NULL, " ");
+ if (tok == NULL)
+ {
+ DEBUGP(("Getting additional line\n"));
+ xfree (line);
+ line = read_whole_line (fp);
+ if (!line)
+ {
+ DEBUGP(("empty line read, leaving listing parser\n"));
+ break;
+ }
+ i = clean_line (line);
+ if (!i)
+ {
+ DEBUGP(("confusing VMS listing item, leaving listing parser\n"));
+ break;
+ }
+ tok = strtok(line, " ");
+ }
+ DEBUGP(("second token: '%s'\n", tok));
+
+ /* Third/Second column: Date DD-MMM-YYYY. */
+
+ tok = strtok(NULL, "-");
+ DEBUGP(("day: '%s'\n",tok));
+ day = atoi(tok);
+ tok = strtok(NULL, "-");
+ if (!tok)
+ {
+ /* If the server produces garbage like
+ 'EA95_0PS.GZ;1 No privilege for attempted operation'
+ the first strtok(NULL, "-") will return everything until the end
+ of the line and only the next strtok() call will return NULL. */
+ DEBUGP(("nonsense in VMS listing, skipping this line\n"));
+ break;
+ }
+ for (i=0; i<12; i++) if (!strcmp(tok,months[i])) break;
+ /* Uknown months are mapped to January */
+ month = i % 12 ;
+ tok = strtok (NULL, " ");
+ year = atoi (tok) - 1900;
+ DEBUGP(("date parsed\n"));
+
+ /* Fourth/Third column: Time hh:mm[:ss] */
+ tok = strtok (NULL, " ");
+ hour = min = sec = 0;
+ p = tok;
+ hour = atoi (p);
+ for (; *p && *p != ':'; ++p);
+ if (*p)
+ min = atoi (++p);
+ for (; *p && *p != ':'; ++p);
+ if (*p)
+ sec = atoi (++p);
+
+ DEBUGP(("YYYY/MM/DD HH:MM:SS - %d/%02d/%02d %02d:%02d:%02d\n",
+ year+1900, month, day, hour, min, sec));
+
+ /* Build the time-stamp (copy & paste from above) */
+ timestruct.tm_sec = sec;
+ timestruct.tm_min = min;
+ timestruct.tm_hour = hour;
+ timestruct.tm_mday = day;
+ timestruct.tm_mon = month;
+ timestruct.tm_year = year;
+ timestruct.tm_wday = 0;
+ timestruct.tm_yday = 0;
+ timestruct.tm_isdst = -1;
+ cur.tstamp = mktime (×truct); /* store the time-stamp */
+
+ DEBUGP(("Timestamp: %ld\n", cur.tstamp));
+
+ /* Skip the fifth column */
+
+ tok = strtok(NULL, " ");
+
+ /* Sixth column: Permissions */
+
+ tok = strtok(NULL, ","); /* Skip the VMS-specific SYSTEM permissons */
+ tok = strtok(NULL, ")");
+ if (tok == NULL)
+ {
+ DEBUGP(("confusing VMS permissions, skipping line\n"));
+ continue;
+ }
+ /* Permissons have the format "RWED,RWED,RE" */
+ cur.perms = vmsperms(tok);
+ DEBUGP(("permissions: %s -> 0%o\n", tok, cur.perms));
+
+ cur.linkto = NULL;
+
+ /* And put everything into the linked list */
+ if (!dir)
+ {
+ l = dir = (struct fileinfo *)xmalloc (sizeof (struct fileinfo));
+ memcpy (l, &cur, sizeof (cur));
+ l->prev = l->next = NULL;
+ }
+ else
+ {
+ cur.prev = l;
+ l->next = (struct fileinfo *)xmalloc (sizeof (struct fileinfo));
+ l = l->next;
+ memcpy (l, &cur, sizeof (cur));
+ l->next = NULL;
+ }
+
+ xfree (line);
+ }
+
+ fclose (fp);
+ return dir;
+}
+
+
+/* This function switches between the correct parsing routine depending on
+ the SYSTEM_TYPE. The system type should be based on the result of the
+ "SYST" response of the FTP server. According to this repsonse we will
+ use on of the three different listing parsers that cover the most of FTP
+ servers used nowadays. */
+
+struct fileinfo *
+ftp_parse_ls (const char *file, const enum stype system_type)
+{
+ switch (system_type)
+ {
+ case ST_UNIX:
+ return ftp_parse_unix_ls (file, FALSE);
+ case ST_WINNT:
+ {
+ /* Detect whether the listing is simulating the UNIX format */
+ FILE *fp;
+ int c;
+ fp = fopen (file, "rb");
+ if (!fp)
{
- case '&':
- *p++ = '&';
- *p++ = 'a';
- *p++ = 'm';
- *p++ = 'p';
- *p++ = ';';
- break;
- case '<': case '>':
- *p++ = '&';
- *p++ = (*s == '<' ? 'l' : 'g');
- *p++ = 't';
- *p++ = ';';
- break;
- case '\"':
- *p++ = '&';
- *p++ = 'q';
- *p++ = 'u';
- *p++ = 'o';
- *p++ = 't';
- *p++ = ';';
- break;
- default:
- *p++ = *s;
- }
+ logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno));
+ return NULL;
+ }
+ c = fgetc(fp);
+ fclose(fp);
+ /* If the first character of the file is '0'-'9', it's WINNT
+ format. */
+ if (c >= '0' && c <='9')
+ return ftp_parse_winnt_ls (file);
+ else
+ return ftp_parse_unix_ls (file, TRUE);
+ }
+ case ST_VMS:
+ return ftp_parse_vms_ls (file);
+ case ST_MACOS:
+ return ftp_parse_unix_ls (file, TRUE);
+ default:
+ logprintf (LOG_NOTQUIET, _("\
+Unsupported listing type, trying Unix listing parser.\n"));
+ return ftp_parse_unix_ls (file, FALSE);
}
- *p = '\0';
- return res;
}
+\f
+/* Stuff for creating FTP index. */
/* The function creates an HTML index containing references to given
directories and files on the appropriate host. The references are
FTP. */
uerr_t
-ftp_index (const char *file, struct urlinfo *u, struct fileinfo *f)
+ftp_index (const char *file, struct url *u, struct fileinfo *f)
{
FILE *fp;
char *upwd;
{
char *tmpu, *tmpp; /* temporary, clean user and passwd */
- tmpu = CLEANDUP (u->user);
- tmpp = u->passwd ? CLEANDUP (u->passwd) : NULL;
+ tmpu = encode_string (u->user);
+ tmpp = u->passwd ? encode_string (u->passwd) : NULL;
upwd = (char *)xmalloc (strlen (tmpu)
+ (tmpp ? (1 + strlen (tmpp)) : 0) + 2);
sprintf (upwd, "%s%s%s@", tmpu, tmpp ? ":" : "", tmpp ? tmpp : "");
- free (tmpu);
+ xfree (tmpu);
FREE_MAYBE (tmpp);
}
else
else if (f->type == FT_SYMLINK)
fprintf (fp, "-> %s", f->linkto ? f->linkto : "(nil)");
putc ('\n', fp);
- free (htclfile);
+ xfree (htclfile);
f = f->next;
}
fprintf (fp, "</pre>\n</body>\n</html>\n");
- free (upwd);
+ xfree (upwd);
if (!opt.dfp)
fclose (fp);
else
projects / wget / blobdiff