X-Git-Url: http://sjero.net/git/?a=blobdiff_plain;f=src%2Fftp-ls.c;h=7e448295e64f82d9bb5631185d2b0afe26a0c459;hb=e24bc5db1b2613cc669ec4d8b91477bdf0be5084;hp=4fd87babe029590695f5fdd7e219581925d82fdd;hpb=31d6616c483359af431f4c33c3c5b237cd8d4426;p=wget diff --git a/src/ftp-ls.c b/src/ftp-ls.c index 4fd87bab..7e448295 100644 --- a/src/ftp-ls.c +++ b/src/ftp-ls.c @@ -1,41 +1,51 @@ /* Parsing FTP `ls' output. - Copyright (C) 1995, 1996, 1997 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 -Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +along with Wget; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +In addition, as a special exception, the Free Software Foundation +gives permission to link the code of its release of Wget with the +OpenSSL project's "OpenSSL" library (or with modified versions of it +that use the same license as the "OpenSSL" library), and distribute +the linked executables. You must obey the GNU General Public License +in all respects for all of the code used other than "OpenSSL". If you +modify this file, you may extend this exception to your version of the +file, but you are not obligated to do so. If you do not wish to do +so, delete this exception statement from your version. */ #include #include #include -#ifdef HAVE_STRING_H -# include -#else -# include -#endif +#include #ifdef HAVE_UNISTD_H # include #endif -#include -#include #include +#include #include "wget.h" #include "utils.h" #include "ftp.h" +#include "url.h" +#include "convert.h" /* for html_quote_string prototype */ + +extern FILE *output_stream; /* Converts symbolic permissions to number-style ones, e.g. string rwxr-xr-x to 755. For now, it knows nothing of @@ -57,6 +67,23 @@ symperms (const char *s) } +/* Cleans a line of text so that it can be consistently parsed. Destroys + and in case that thay occur at the end of the line and + replaces all character with . 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' @@ -66,7 +93,7 @@ symperms (const char *s) 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[] = { @@ -91,25 +118,20 @@ ftp_parse_unix_ls (const char *file) dir = l = NULL; /* Line loop to end of file: */ - while ((line = read_whole_line (fp))) + while ((line = read_whole_line (fp)) != NULL) { - DEBUGP (("%s\n", line)); - len = strlen (line); - /* Destroy if there is one. */ - 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; } @@ -133,14 +155,33 @@ ftp_parse_unix_ls (const char *file) 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; @@ -156,7 +197,7 @@ ftp_parse_unix_ls (const char *file) This tactic is quite dubious when it comes to internationalization issues (non-English month names), but it works for now. */ - while ((tok = strtok (NULL, " "))) + while ((tok = strtok (NULL, " ")) != NULL) { --next; if (next < 0) /* a month name was not encountered */ @@ -168,17 +209,28 @@ ftp_parse_unix_ls (const char *file) size, and the filename is three tokens away. */ if (i != 12) { - char *t = tok - 2; - long mul = 1; + wgint size; - for (cur.size = 0; t > line && ISDIGIT (*t); mul *= 10, t--) - cur.size += mul * (*t - '0'); + /* Back up to the beginning of the previous token + and parse it with str_to_wgint. */ + char *t = tok - 2; + while (t > line && ISDIGIT (*t)) + --t; if (t == line) { - /* Something is seriously wrong. */ + /* Something has gone wrong during parsing. */ error = 1; break; } + errno = 0; + size = str_to_wgint (t, NULL, 10); + if (size == WGINT_MAX && errno == ERANGE) + /* Out of range -- ignore the size. #### Should + we refuse to start the download. */ + cur.size = 0; + else + cur.size = size; + month = i; next = 5; DEBUGP (("month: %s; ", months[month])); @@ -278,7 +330,7 @@ ftp_parse_unix_ls (const char *file) default -F output. I believe these cases are very rare. */ fnlen = strlen (tok); /* re-calculate `fnlen' */ - cur.name = (char *)xmalloc (fnlen + 1); + cur.name = xmalloc (fnlen + 1); memcpy (cur.name, tok, fnlen + 1); if (fnlen) { @@ -316,22 +368,22 @@ ftp_parse_unix_ls (const char *file) if (error || ignore) { DEBUGP (("Skipping.\n")); - FREE_MAYBE (cur.name); - FREE_MAYBE (cur.linkto); - free (line); + xfree_null (cur.name); + xfree_null (cur.linkto); + xfree (line); continue; } if (!dir) { - l = dir = (struct fileinfo *)xmalloc (sizeof (struct fileinfo)); + l = dir = xnew (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->next = xnew (struct fileinfo); l = l->next; memcpy (l, &cur, sizeof (cur)); l->next = NULL; @@ -366,23 +418,536 @@ ftp_parse_unix_ls (const char *file) timestruct.tm_isdst = -1; l->tstamp = mktime (×truct); /* store the time-stamp */ - free (line); + xfree (line); + } + + fclose (fp); + return dir; +} + +static struct fileinfo * +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, *tok; /* tokenizer */ + struct fileinfo *dir, *l, cur; /* list creation */ + + fp = fopen (file, "rb"); + if (!fp) + { + logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno)); + return NULL; + } + dir = l = NULL; + + /* Line loop to end of file: */ + while ((line = read_whole_line (fp)) != NULL) + { + 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, "-"); + if (tok == NULL) continue; + month = atoi(tok) - 1; + if (month < 0) month = 0; + tok = strtok(NULL, "-"); + if (tok == NULL) continue; + day = atoi(tok); + tok = strtok(NULL, " "); + if (tok == NULL) continue; + 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, ":"); + if (tok == NULL) continue; + hour = atoi(tok); + tok = strtok(NULL, "M"); + if (tok == NULL) continue; + 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(("Timestamp: %ld\n", cur.tstamp)); + + /* Third column: Either file length, or . 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, " "); + if (tok == NULL) continue; + while ((tok != NULL) && (*tok == '\0')) tok = strtok(NULL, " "); + if (tok == NULL) continue; + if (*tok == '<') + { + cur.type = FT_DIRECTORY; + cur.size = 0; + cur.perms = 0755; + DEBUGP(("Directory\n")); + } + else + { + wgint size; + cur.type = FT_PLAINFILE; + errno = 0; + size = str_to_wgint (tok, NULL, 10); + if (size == WGINT_MAX && errno == ERANGE) + cur.size = 0; /* overflow */ + else + cur.size = size; + cur.perms = 0644; + DEBUGP(("File, size %s bytes\n", number_to_static_string (cur.size))); + } + + cur.linkto = NULL; + + /* And put everything into the linked list */ + if (!dir) + { + l = dir = xnew (struct fileinfo); + memcpy (l, &cur, sizeof (cur)); + l->prev = l->next = NULL; + } + else + { + cur.prev = l; + l->next = xnew (struct fileinfo); + l = l->next; + memcpy (l, &cur, sizeof (cur)); + l->next = NULL; + } + + xfree (line); + } + + fclose(fp); + 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 . */ +static int +vmsperms (const char *s) +{ + int perms = 0; + + 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; +} + + +static struct fileinfo * +ftp_parse_vms_ls (const char *file) +{ + 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 */ + + fp = fopen (file, "rb"); + if (!fp) + { + logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno)); + return NULL; + } + dir = l = NULL; + + /* Skip empty line. */ + line = read_whole_line (fp); + xfree_null (line); + + /* Skip "Directory PUB$DEVICE[PUB]" */ + line = read_whole_line (fp); + xfree_null (line); + + /* Skip empty line. */ + line = read_whole_line (fp); + xfree_null (line); + + /* Line loop to end of file: */ + while ((line = read_whole_line (fp)) != NULL) + { + char *p; + i = clean_line (line); + if (!i) + { + xfree (line); + 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")); + xfree (line); + break; + } + tok = strtok(line, " "); + } + DEBUGP(("second token: '%s'\n", tok)); + + /* Third/Second column: Date DD-MMM-YYYY. */ + + tok = strtok(NULL, "-"); + if (tok == NULL) continue; + 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")); + xfree (line); + 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, " "); + if (tok == NULL) continue; + year = atoi (tok) - 1900; + DEBUGP(("date parsed\n")); + + /* Fourth/Third column: Time hh:mm[:ss] */ + tok = strtok (NULL, " "); + if (tok == NULL) continue; + 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, " "); + if (tok == NULL) continue; + + /* Sixth column: Permissions */ + + tok = strtok(NULL, ","); /* Skip the VMS-specific SYSTEM permissons */ + if (tok == NULL) continue; + tok = strtok(NULL, ")"); + if (tok == NULL) + { + DEBUGP(("confusing VMS permissions, skipping line\n")); + xfree (line); + 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 = xnew (struct fileinfo); + memcpy (l, &cur, sizeof (cur)); + l->prev = l->next = NULL; + } + else + { + cur.prev = l; + l->next = xnew (struct fileinfo); + l = l->next; + memcpy (l, &cur, sizeof (cur)); + l->next = NULL; + } + + xfree (line); } fclose (fp); return dir; } -/* This function is just a stub. It should actually accept some kind - of information what system it is running on -- e.g. FPL_UNIX, - FPL_DOS, FPL_NT, FPL_VMS, etc. and a "guess-me" value, like - FPL_GUESS. Then it would call the appropriate parsers to fill up - fileinfos. - Since we currently support only the Unix FTP servers, this function - simply returns the result of ftp_parse_unix_ls(). */ +/* 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) +ftp_parse_ls (const char *file, const enum stype system_type) { - return ftp_parse_unix_ls (file); + switch (system_type) + { + case ST_UNIX: + return ftp_parse_unix_ls (file, 0); + case ST_WINNT: + { + /* Detect whether the listing is simulating the UNIX format */ + FILE *fp; + int c; + fp = fopen (file, "rb"); + if (!fp) + { + 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, 1); + } + case ST_VMS: + return ftp_parse_vms_ls (file); + case ST_MACOS: + return ftp_parse_unix_ls (file, 1); + default: + logprintf (LOG_NOTQUIET, _("\ +Unsupported listing type, trying Unix listing parser.\n")); + return ftp_parse_unix_ls (file, 0); + } +} + +/* 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 url *u, struct fileinfo *f) +{ + FILE *fp; + char *upwd; + char *htclfile; /* HTML-clean file name */ + + if (!output_stream) + { + fp = fopen (file, "wb"); + if (!fp) + { + logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno)); + return FOPENERR; + } + } + else + fp = output_stream; + if (u->user) + { + char *tmpu, *tmpp; /* temporary, clean user and passwd */ + + tmpu = url_escape (u->user); + tmpp = u->passwd ? url_escape (u->passwd) : NULL; + if (tmpp) + upwd = concat_strings (tmpu, ":", tmpp, "@", (char *) 0); + else + upwd = concat_strings (tmpu, "@", (char *) 0); + xfree (tmpu); + xfree_null (tmpp); + } + else + upwd = xstrdup (""); + fprintf (fp, "\n"); + fprintf (fp, "\n\n"); + fprintf (fp, _("Index of /%s on %s:%d"), u->dir, u->host, u->port); + fprintf (fp, "\n\n\n

"); + fprintf (fp, _("Index of /%s on %s:%d"), u->dir, u->host, u->port); + fprintf (fp, "

\n
\n
\n");
+  while (f)
+    {
+      fprintf (fp, "  ");
+      if (f->tstamp != -1)
+	{
+	  /* #### Should we translate the months?  Or, even better, use
+	     ISO 8601 dates?  */
+	  static const char *months[] = {
+	    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+	    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+	  };
+	  struct tm *ptm = localtime ((time_t *)&f->tstamp);
+
+	  fprintf (fp, "%d %s %02d ", ptm->tm_year + 1900, months[ptm->tm_mon],
+		  ptm->tm_mday);
+	  if (ptm->tm_hour)
+	    fprintf (fp, "%02d:%02d  ", ptm->tm_hour, ptm->tm_min);
+	  else
+	    fprintf (fp, "       ");
+	}
+      else
+	fprintf (fp, _("time unknown       "));
+      switch (f->type)
+	{
+	case FT_PLAINFILE:
+	  fprintf (fp, _("File        "));
+	  break;
+	case FT_DIRECTORY:
+	  fprintf (fp, _("Directory   "));
+	  break;
+	case FT_SYMLINK:
+	  fprintf (fp, _("Link        "));
+	  break;
+	default:
+	  fprintf (fp, _("Not sure    "));
+	  break;
+	}
+      htclfile = html_quote_string (f->name);
+      fprintf (fp, "host, u->port);
+      if (*u->dir != '/')
+	putc ('/', fp);
+      fprintf (fp, "%s", u->dir);
+      if (*u->dir)
+	putc ('/', fp);
+      fprintf (fp, "%s", htclfile);
+      if (f->type == FT_DIRECTORY)
+	putc ('/', fp);
+      fprintf (fp, "\">%s", htclfile);
+      if (f->type == FT_DIRECTORY)
+	putc ('/', fp);
+      fprintf (fp, " ");
+      if (f->type == FT_PLAINFILE)
+	fprintf (fp, _(" (%s bytes)"), number_to_static_string (f->size));
+      else if (f->type == FT_SYMLINK)
+	fprintf (fp, "-> %s", f->linkto ? f->linkto : "(nil)");
+      putc ('\n', fp);
+      xfree (htclfile);
+      f = f->next;
+    }
+  fprintf (fp, "
\n\n\n"); + xfree (upwd); + if (!output_stream) + fclose (fp); + else + fflush (fp); + return FTPOK; }