/* 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.
#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'
/* 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))
{
/* 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);
/* Extracting name is a bit of black magic and we have to do it
before `strtok' inserted extra \0 characters in the line
return dir;
}
+/* 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)
+{
+ int perms = 0;
-#ifdef HAVE_FTPPARSE
+ do
+ {
+ 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;
+}
-/* 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_vms_ls (const char *file)
{
FILE *fp;
- int len;
+ /* #### 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; /* tokenizer */
+ char *line, *tok, *p; /* tokenizer */
struct fileinfo *dir, *l, cur; /* list creation */
fp = fopen (file, "rb");
}
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)))
{
- struct ftpparse fp;
+ 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"));
+ }
- 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';
+ cur.size = 0;
- if (ftpparse(&fp, line, len))
+ /* 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)
{
- 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;
+ 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)+1;
+ tok = strtok(NULL, " ");
+ year = atoi(tok)-1900;
+ DEBUGP(("date parsed\n"));
+
+ /* Fourth/Third column: Time hh:mm:ss */
+ tok = strtok(NULL, ":");
+ hour = atoi(tok);
+ tok = strtok(NULL, ":");
+ min = atoi(tok);
+ tok = strtok(NULL, " ");
+ sec = atoi(tok);
+
+ 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;
}
-#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. */
+
+/* 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)
{
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);
+ 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:
-#ifdef HAVE_FTPPARSE
- return ftp_parse_nonunix_ls (file);
-#else
- /* #### Maybe log some warning here? */
- return ftp_parse_unix_ls (file);
-#endif
+ logprintf (LOG_NOTQUIET, _("\
+Usupported listing type, trying Unix listing parser.\n"));
+ return ftp_parse_unix_ls (file, FALSE);
}
}
\f
projects / wget / blobdiff