/* Parsing FTP `ls' output. Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. This file is part of GNU Wget. 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 3 of the License, or (at your option) any later version. 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 Wget. If not, see . Additional permission under GNU GPL version 3 section 7 If you modify this program, or any covered work, by linking or combining it with the OpenSSL project's OpenSSL library (or a modified version of that library), containing parts covered by the terms of the OpenSSL or SSLeay licenses, the Free Software Foundation grants you additional permission to convey the resulting work. Corresponding Source for a non-source form of such a combination shall include the source code for the parts of OpenSSL used as well as that of the covered work. */ #include "wget.h" #include #include #include #include #include #include #include "utils.h" #include "ftp.h" #include "url.h" #include "convert.h" /* for html_quote_string prototype */ #include "retr.h" /* for output_stream */ /* 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. */ static int symperms (const char *s) { int perms = 0, i; if (strlen (s) < 9) return 0; for (i = 0; i < 3; i++, s += 3) { perms <<= 3; perms += (((s[0] == 'r') << 2) + ((s[1] == 'w') << 1) + (s[2] == 'x' || s[2] == 's')); } return perms; } /* 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 (!len) return 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' output (whatever that might be). BSD (no group) and SYSV (with group) listings are handled. 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, int ignore_perms) { FILE *fp; static const char *months[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; int next, len, i, error, ignore; int year, month, day; /* for time analysis */ int hour, min, sec, ptype; struct tm timestruct, *tnow; time_t timenow; char *line, *tok, *ptok; /* 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); /* Skip if total... */ if (!strncasecmp (line, "total", 5)) { xfree (line); continue; } /* Get the first token (permissions). */ tok = strtok (line, " "); if (!tok) { xfree (line); continue; } cur.name = NULL; cur.linkto = NULL; /* Decide whether we deal with a file or a directory. */ switch (*tok) { case '-': cur.type = FT_PLAINFILE; DEBUGP (("PLAINFILE; ")); break; case 'd': cur.type = FT_DIRECTORY; DEBUGP (("DIRECTORY; ")); break; case 'l': cur.type = FT_SYMLINK; DEBUGP (("SYMLINK; ")); break; default: cur.type = FT_UNKNOWN; DEBUGP (("UNKNOWN; ")); break; } 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; /* Erroneous and ignoring entries are treated equally for now. */ year = hour = min = sec = 0; /* Silence the compiler. */ month = day = 0; ptype = TT_DAY; next = -1; /* While there are tokens on the line, parse them. Next is the number of tokens left until the filename. Use the month-name token as the "anchor" (the place where the position wrt the file name is "known"). When a month name is encountered, `next' is set to 5. Also, the preceding characters are parsed to get the file size. This tactic is quite dubious when it comes to internationalization issues (non-English month names), but it works for now. */ tok = line; while (ptok = tok, (tok = strtok (NULL, " ")) != NULL) { --next; if (next < 0) /* a month name was not encountered */ { for (i = 0; i < 12; i++) if (!strcmp (tok, months[i])) break; /* If we got a month, it means the token before it is the size, and the filename is three tokens away. */ if (i != 12) { wgint size; /* Parse the previous token with str_to_wgint. */ if (ptok == line) { /* Something has gone wrong during parsing. */ error = 1; break; } errno = 0; size = str_to_wgint (ptok, 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; DEBUGP (("size: %s; ", number_to_static_string(cur.size))); month = i; next = 5; DEBUGP (("month: %s; ", months[month])); } } else if (next == 4) /* days */ { if (tok[1]) /* two-digit... */ day = 10 * (*tok - '0') + tok[1] - '0'; else /* ...or one-digit */ day = *tok - '0'; DEBUGP (("day: %d; ", day)); } else if (next == 3) { /* This ought to be either the time, or the year. Let's be flexible! If we have a number x, it's a year. If we have x:y, it's hours and minutes. If we have x:y:z, z are seconds. */ year = 0; min = hour = sec = 0; /* We must deal with digits. */ if (c_isdigit (*tok)) { /* Suppose it's year. */ for (; c_isdigit (*tok); tok++) year = (*tok - '0') + 10 * year; if (*tok == ':') { /* This means these were hours! */ hour = year; year = 0; ptype = TT_HOUR_MIN; ++tok; /* Get the minutes... */ for (; c_isdigit (*tok); tok++) min = (*tok - '0') + 10 * min; if (*tok == ':') { /* ...and the seconds. */ ++tok; for (; c_isdigit (*tok); tok++) sec = (*tok - '0') + 10 * sec; } } } if (year) DEBUGP (("year: %d (no tm); ", year)); else DEBUGP (("time: %02d:%02d:%02d (no yr); ", hour, min, sec)); } else if (next == 2) /* The file name */ { int fnlen; char *p; /* Since the file name may contain a SPC, it is possible for strtok to handle it wrong. */ fnlen = strlen (tok); if (fnlen < len - (tok - line)) { /* So we have a SPC in the file name. Restore the original. */ tok[fnlen] = ' '; /* If the file is a symbolic link, it should have a ` -> ' somewhere. */ if (cur.type == FT_SYMLINK) { p = strstr (tok, " -> "); if (!p) { error = 1; break; } cur.linkto = xstrdup (p + 4); DEBUGP (("link to: %s\n", cur.linkto)); /* And separate it from the file name. */ *p = '\0'; } } /* If we have the filename, add it to the list of files or directories. */ /* "." and ".." are an exception! */ if (!strcmp (tok, ".") || !strcmp (tok, "..")) { DEBUGP (("\nIgnoring `.' and `..'; ")); ignore = 1; break; } /* Some FTP sites choose to have ls -F as their default LIST output, which marks the symlinks with a trailing `@', directory names with a trailing `/' and executables with a trailing `*'. This is no problem unless encountering a symbolic link ending with `@', or an executable ending with `*' on a server without default -F output. I believe these cases are very rare. */ fnlen = strlen (tok); /* re-calculate `fnlen' */ cur.name = xmalloc (fnlen + 1); memcpy (cur.name, tok, fnlen + 1); if (fnlen) { if (cur.type == FT_DIRECTORY && cur.name[fnlen - 1] == '/') { cur.name[fnlen - 1] = '\0'; DEBUGP (("trailing `/' on dir.\n")); } else if (cur.type == FT_SYMLINK && cur.name[fnlen - 1] == '@') { cur.name[fnlen - 1] = '\0'; DEBUGP (("trailing `@' on link.\n")); } else if (cur.type == FT_PLAINFILE && (cur.perms & 0111) && cur.name[fnlen - 1] == '*') { cur.name[fnlen - 1] = '\0'; DEBUGP (("trailing `*' on exec.\n")); } } /* if (fnlen) */ else error = 1; break; } else abort (); } /* while */ if (!cur.name || (cur.type == FT_SYMLINK && !cur.linkto)) error = 1; DEBUGP (("%s\n", cur.name ? cur.name : "")); if (error || ignore) { DEBUGP (("Skipping.\n")); xfree_null (cur.name); xfree_null (cur.linkto); xfree (line); continue; } 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; } /* Get the current time. */ timenow = time (NULL); tnow = localtime (&timenow); /* Build the time-stamp (the idea by zaga@fly.cc.fer.hr). */ timestruct.tm_sec = sec; timestruct.tm_min = min; timestruct.tm_hour = hour; timestruct.tm_mday = day; timestruct.tm_mon = month; if (year == 0) { /* Some listings will not specify the year if it is "obvious" that the file was from the previous year. E.g. if today is 97-01-12, and you see a file of Dec 15th, its year is 1996, not 1997. Thanks to Vladimir Volovich for mentioning this! */ if (month > tnow->tm_mon) timestruct.tm_year = tnow->tm_year - 1; else timestruct.tm_year = tnow->tm_year; } else timestruct.tm_year = year; if (timestruct.tm_year >= 1900) timestruct.tm_year -= 1900; timestruct.tm_wday = 0; timestruct.tm_yday = 0; timestruct.tm_isdst = -1; l->tstamp = mktime (×truct); /* store the time-stamp */ l->ptype = ptype; 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) goto continue_loop; 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) goto continue_loop; month = atoi(tok) - 1; if (month < 0) month = 0; tok = strtok(NULL, "-"); if (tok == NULL) goto continue_loop; day = atoi(tok); tok = strtok(NULL, " "); if (tok == NULL) goto continue_loop; 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) goto continue_loop; hour = atoi(tok); tok = strtok(NULL, "M"); if (tok == NULL) goto continue_loop; 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 */ cur.ptype = TT_HOUR_MIN; 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) goto continue_loop; while ((tok != NULL) && (*tok == '\0')) tok = strtok(NULL, " "); if (tok == NULL) goto continue_loop; 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; } continue_loop: xfree (line); } fclose(fp); return dir; } /* Convert the VMS-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 VMS "DIRECTORY [/SIZE [= ALL]] /DATE [/OWNER] [/PROTECTION]" command, more or less. (Different VMS FTP servers may have different headers, and may not supply the same data, but all should be subsets of this.) VMS normally provides local (server) time and date information. Define the logical name or environment variable "WGET_TIMEZONE_DIFFERENTIAL" (seconds) to adjust the receiving local times if different from the remote local times. 2005-02-23 SMS. Added code to eliminate "^" escape characters from ODS5 extended file names. The TCPIP FTP server (V5.4) seems to prefer requests which do not use the escaped names which it provides. */ #define VMS_DEFAULT_PROT_FILE 0644 #define VMS_DEFAULT_PROT_DIR 0755 /* 2005-02-23 SMS. eat_carets(). Delete ODS5 extended file name escape characters ("^") in the original buffer. Note that the current scheme does not handle all EFN cases, but it could be made more complicated. */ static void eat_carets( char *str) /* char *str; Source pointer. */ { char *strd; /* Destination pointer. */ char hdgt; unsigned char uchr; unsigned char prop; /* Skip ahead to the first "^", if any. */ while ((*str != '\0') && (*str != '^')) str++; /* If no caret was found, quit early. */ if (*str != '\0') { /* Shift characters leftward as carets are found. */ strd = str; while (*str != '\0') { uchr = *str; if (uchr == '^') { /* Found a caret. Skip it, and check the next character. */ uchr = *(++str); prop = char_prop[ uchr]; if (prop& 64) { /* Hex digit. Get char code from this and next hex digit. */ if (uchr <= '9') { hdgt = uchr- '0'; /* '0' - '9' -> 0 - 9. */ } else { hdgt = ((uchr- 'A')& 7)+ 10; /* [Aa] - [Ff] -> 10 - 15. */ } hdgt <<= 4; /* X16. */ uchr = *(++str); /* Next char must be hex digit. */ if (uchr <= '9') { uchr = hdgt+ uchr- '0'; } else { uchr = hdgt+ ((uchr- 'A')& 15)+ 10; } } else if (uchr == '_') { /* Convert escaped "_" to " ". */ uchr = ' '; } else if (uchr == '/') { /* Convert escaped "/" (invalid Zip) to "?" (invalid VMS). */ /* Note that this is a left-over from Info-ZIP code, and is probably of little value here, except perhaps to avoid directory confusion which an unconverted slash might cause. */ uchr = '?'; } /* Else, not a hex digit. Must be a simple escaped character (or Unicode, which is not yet handled here). */ } /* Else, not a caret. Use as-is. */ *strd = uchr; /* Advance destination and source pointers. */ strd++; str++; } /* Terminate the destination string. */ *strd = '\0'; } } static struct fileinfo * ftp_parse_vms_ls (const char *file) { FILE *fp; int dt, i, j, len; int perms; time_t timenow; struct tm *timestruct; char date_str[ 32]; char *line, *tok; /* tokenizer */ struct fileinfo *dir, *l, cur; /* list creation */ fp = fopen (file, "r"); if (!fp) { logprintf (LOG_NOTQUIET, "%s: %s\n", file, strerror (errno)); return NULL; } dir = l = NULL; /* Skip blank lines, Directory heading, and more blank lines. */ j = 0; /* Expecting initial blank line(s). */ while (1) { line = read_whole_line (fp); if (line == NULL) { break; } else { i = clean_line (line); if (i <= 0) { xfree (line); /* Free useless line storage. */ continue; /* Blank line. Keep looking. */ } else { if ((j == 0) && (line[ i- 1] == ']')) { /* Found Directory heading line. Next non-blank line is significant. */ j = 1; } else if (!strncmp (line, "Total of ", 9)) { /* Found "Total of ..." footing line. No valid data will follow (empty directory). */ xfree (line); /* Free useless line storage. */ line = NULL; /* Arrange for early exit. */ break; } else { break; /* Must be significant data. */ } } xfree (line); /* Free useless line storage. */ } } /* Read remainder of file until the next blank line or EOF. */ while (line != NULL) { char *p; /* The first token is the file name. After a long name, other data may be on the following line. A valid directory name ends in ".DIR;1" (any case), although some VMS FTP servers may omit the version number (";1"). */ tok = strtok(line, " "); if (tok == NULL) tok = line; DEBUGP (("file name: '%s'\n", tok)); /* Stripping the version number on a VMS system would be wrong. It may be foolish on a non-VMS system, too, but that's someone else's problem. (Define PRESERVE_VMS_VERSIONS for proper operation on other operating systems.) 2005-02-23 SMS. ODS5 extended file names may contain escaped semi-colons, so the version number is identified as right-side decimal digits led by a non-escaped semi-colon. It may be absent. */ #if (!defined( __VMS) && !defined( PRESERVE_VMS_VERSIONS)) for (p = tok + strlen (tok); (--p > tok) && c_isdigit( *p); ); if ((*p == ';') && (*(p- 1) != '^')) { *p = '\0'; } #endif /* (!defined( __VMS) && !defined( PRESERVE_VMS_VERSIONS)) */ /* 2005-02-23 SMS. Eliminate "^" escape characters from ODS5 extended file name. (A caret is invalid in an ODS2 name, so this is always safe.) */ eat_carets (tok); DEBUGP (("file name-^: '%s'\n", tok)); /* Differentiate between a directory and any other file. A VMS listing may not include file protections (permissions). Set a default permissions value (according to the file type), which may be overwritten later. Store directory names without the ".DIR;1" file type and version number, as the plain name is what will work in a CWD command. */ len = strlen (tok); if (!strncasecmp((tok + (len - 4)), ".DIR", 4)) { *(tok+ (len - 4)) = '\0'; /* Discard ".DIR". */ cur.type = FT_DIRECTORY; cur.perms = VMS_DEFAULT_PROT_DIR; DEBUGP (("Directory (nv)\n")); } else if (!strncasecmp ((tok + (len - 6)), ".DIR;1", 6)) { *(tok+ (len - 6)) = '\0'; /* Discard ".DIR;1". */ cur.type = FT_DIRECTORY; cur.perms = VMS_DEFAULT_PROT_DIR; DEBUGP (("Directory (v)\n")); } else { cur.type = FT_PLAINFILE; cur.perms = VMS_DEFAULT_PROT_FILE; DEBUGP (("File\n")); } cur.name = xstrdup (tok); DEBUGP (("Name: '%s'\n", cur.name)); /* Null the date and time string. */ *date_str = '\0'; /* VMS lacks symbolic links. */ cur.linkto = NULL; /* VMS reports file sizes in (512-byte) disk blocks, not bytes, hence useless for an integrity check based on byte-count. Set size to unknown. */ cur.size = 0; /* Get token 2, if any. A long name may force all other data onto a second line. If needed, read the second line. */ tok = strtok (NULL, " "); if (tok == NULL) { DEBUGP (("Getting additional line.\n")); xfree (line); line = read_whole_line (fp); if (!line) { DEBUGP (("EOF. Leaving listing parser.\n")); break; } /* Second line must begin with " ". Otherwise, it's a first line (and we may be confused). */ if (i <= 0) { /* Blank line. End of significant file listing. */ DEBUGP (("Blank line. Leaving listing parser.\n")); xfree (line); /* Free useless line storage. */ break; } else if (line[ 0] != ' ') { DEBUGP (("Non-blank in column 1. Must be a new file name?\n")); continue; } else { tok = strtok (line, " "); if (tok == NULL) { /* Unexpected non-empty but apparently blank line. */ DEBUGP (("Null token. Leaving listing parser.\n")); xfree (line); /* Free useless line storage. */ break; } } } /* Analyze tokens. (Order is not significant, except date must precede time.) Size: ddd or ddd/ddd (where "ddd" is a decimal number) Date: DD-MMM-YYYY Time: HH:MM or HH:MM:SS or HH:MM:SS.CC Owner: [user] or [user,group] Protection: (ppp,ppp,ppp,ppp) (where "ppp" is "RWED" or some subset thereof, for System, Owner, Group, World. If permission is lacking, info may be replaced by the string: "No privilege for attempted operation". */ while (tok != NULL) { DEBUGP (("Token: >%s<: ", tok)); if ((strlen (tok) < 12) && (strchr( tok, '-') != NULL)) { /* Date. */ DEBUGP (("Date.\n")); strcpy( date_str, tok); strcat( date_str, " "); } else if ((strlen (tok) < 12) && (strchr( tok, ':') != NULL)) { /* Time. */ DEBUGP (("Time. ")); strncat( date_str, tok, (sizeof( date_str)- strlen (date_str) - 1)); DEBUGP (("Date time: >%s<\n", date_str)); } else if (strchr ( tok, '[') != NULL) { /* Owner. (Ignore.) */ DEBUGP (("Owner.\n")); } else if (strchr (tok, '(') != NULL) { /* Protections (permissions). */ perms = 0; j = 0; for (i = 0; i < strlen( tok); i++) { switch (tok[ i]) { case '(': break; case ')': break; case ',': if (j == 0) { perms = 0; j = 1; } else { perms <<= 3; } break; case 'R': perms |= 4; break; case 'W': perms |= 2; break; case 'E': perms |= 1; break; case 'D': perms |= 2; break; } } cur.perms = perms; DEBUGP (("Prot. perms = %0o.\n", cur.perms)); } else { /* Nondescript. Probably size(s), probably in blocks. Could be "No privilege ..." message. (Ignore.) */ DEBUGP (("Ignored (size?).\n")); } tok = strtok (NULL, " "); } /* Tokens exhausted. Interpret the data, and fill in the structure. */ /* Fill tm timestruct according to date-time string. Fractional seconds are ignored. Default to current time, if conversion fails. */ timenow = time( NULL); timestruct = localtime( &timenow ); strptime( date_str, "%d-%b-%Y %H:%M:%S", timestruct); /* Convert struct tm local time to time_t local time. */ timenow = mktime (timestruct); /* Offset local time according to environment variable (seconds). */ if ((tok = getenv ( "WGET_TIMEZONE_DIFFERENTIAL")) != NULL) { dt = atoi (tok); DEBUGP (("Time differential = %d.\n", dt)); } else dt = 0; if (dt >= 0) timenow += dt; else timenow -= (-dt); cur.tstamp = timenow; /* Store the time-stamp. */ DEBUGP (("Timestamp: %ld\n", cur.tstamp)); cur.ptype = TT_HOUR_MIN; /* Add the data for this item to 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 old line storage. Read a new line. */ xfree (line); line = read_whole_line (fp); if (line != NULL) { i = clean_line (line); if (i <= 0) { /* Blank line. End of significant file listing. */ xfree (line); /* Free useless line storage. */ break; } } } 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, 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 *htcldir; /* HTML-clean dir name */ char *htclfile; /* HTML-clean file name */ char *urlclfile; /* URL-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 (""); htcldir = html_quote_string (u->dir); fprintf (fp, "\n"); fprintf (fp, "\n\n"); fprintf (fp, _("Index of /%s on %s:%d"), htcldir, u->host, u->port); fprintf (fp, "\n\n\n

"); fprintf (fp, _("Index of /%s on %s:%d"), htcldir, 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"
          };
          time_t tstamp = f->tstamp;
          struct tm *ptm = localtime (&tstamp);

          fprintf (fp, "%d %s %02d ", ptm->tm_year + 1900, months[ptm->tm_mon],
                  ptm->tm_mday);
          if (f->ptype == TT_HOUR_MIN)
            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);
      urlclfile = url_escape_unsafe_and_reserved (f->name);
      fprintf (fp, "host, u->port);
      if (*u->dir != '/')
        putc ('/', fp);
      /* XXX: Should probably URL-escape dir components here, rather
       * than just HTML-escape, for consistency with the next bit where
       * we use urlclfile for the file component. Anyway, this is safer
       * than what we had... */
      fprintf (fp, "%s", htcldir);
      if (*u->dir)
        putc ('/', fp);
      fprintf (fp, "%s", urlclfile);
      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);
      xfree (urlclfile);
      f = f->next;
    }
  fprintf (fp, "
\n\n\n"); xfree (htcldir); xfree (upwd); if (!output_stream) fclose (fp); else fflush (fp); return FTPOK; }