mirror of
https://gitlab.com/mojo42/Jirafeau.git
synced 2025-02-25 16:42:48 +01:00
645 lines
18 KiB
PHP
645 lines
18 KiB
PHP
<?php
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/*
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* Jirafeau, your web file repository
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* Copyright (C) 2008 Julien "axolotl" BERNARD <axolotl@magieeternelle.org>
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* Copyright (C) 2012 Jerome Jutteau <j.jutteau@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* Transform a string in a path by seperating each letters by a '/'.
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* @return path finishing with a '/'
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*/
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function
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s2p ($s)
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{
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$p = '';
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for ($i = 0; $i < strlen ($s); $i++)
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$p .= $s{$i} . '/';
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return $p;
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}
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/**
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* Convert base 16 to base 64
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* @returns A string based on 64 characters (0-9, a-z, A-Z, "-" and "_")
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*/
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function
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base_16_to_64 ($num)
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{
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$m = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_';
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$hex2bin = ['0000', # 0
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'0001', # 1
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'0010', # 2
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'0011', # 3
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'0100', # 4
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'0101', # 5
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'0110', # 6
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'0111', # 7
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'1000', # 8
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'1001', # 9
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'1010', # a
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'1011', # b
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'1100', # c
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'1101', # d
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'1110', # e
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'1111']; # f
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$o = '';
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$b = '';
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$i = 0;
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# Convert long hex string to bin.
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$size = strlen ($num);
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for ($i = 0; $i < $size; $i++)
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$b .= $hex2bin{hexdec ($num{$i})};
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# Convert long bin to base 64.
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$size *= 4;
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for ($i = $size - 6; $i >= 0; $i -= 6)
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$o = $m{bindec (substr ($b, $i, 6))} . $o;
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# Some few bits remaining ?
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if ($i < 0 && $i > -6)
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$o = $m{bindec (substr ($b, 0, $i + 6))} . $o;
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return $o;
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}
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function
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jirafeau_human_size ($octets)
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{
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$u = array ('B', 'KB', 'MB', 'GB', 'TB');
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$o = max ($octets, 0);
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$p = min (floor (($o ? log ($o) : 0) / log (1024)), count ($u) - 1);
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$o /= pow (1024, $p);
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return round ($o, 1) . $u[$p];
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}
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function
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jirafeau_clean_rm_link ($link)
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{
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$p = s2p ("$link");
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if (file_exists (VAR_LINKS . $p . $link))
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unlink (VAR_LINKS . $p . $link);
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$parse = VAR_LINKS . $p;
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$scan = array();
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while (file_exists ($parse)
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&& ($scan = scandir ($parse))
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&& count ($scan) == 2 // '.' and '..' folders => empty.
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&& basename ($parse) != basename (VAR_LINKS))
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{
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rmdir ($parse);
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$parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1);
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}
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}
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function
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jirafeau_clean_rm_file ($md5)
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{
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$p = s2p ("$md5");
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if (file_exists (VAR_FILES . $p . $md5))
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unlink (VAR_FILES . $p . $md5);
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if (file_exists (VAR_FILES . $p . $md5 . '_count'))
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unlink (VAR_FILES . $p . $md5 . '_count');
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$parse = VAR_FILES . $p;
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$scan = array();
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while (file_exists ($parse)
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&& ($scan = scandir ($parse))
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&& count ($scan) == 2 // '.' and '..' folders => empty.
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&& basename ($parse) != basename (VAR_FILES))
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{
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rmdir ($parse);
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$parse = substr ($parse, 0, strlen($parse) - strlen(basename ($parse)) - 1);
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}
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}
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/**
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* transforms a php.ini string representing a value in an integer
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* @param $value the value from php.ini
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* @returns an integer for this value
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*/
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function jirafeau_ini_to_bytes ($value)
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{
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$modifier = substr ($value, -1);
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$bytes = substr ($value, 0, -1);
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switch (strtoupper ($modifier))
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{
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case 'P':
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$bytes *= 1024;
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case 'T':
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$bytes *= 1024;
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case 'G':
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$bytes *= 1024;
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case 'M':
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$bytes *= 1024;
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case 'K':
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$bytes *= 1024;
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default:
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break;
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}
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return $bytes;
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}
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/**
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* gets the maximum upload size according to php.ini
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* @returns the maximum upload size string
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*/
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function
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jirafeau_get_max_upload_size ()
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{
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return jirafeau_human_size(
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min (jirafeau_ini_to_bytes (ini_get ('post_max_size')),
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jirafeau_ini_to_bytes (ini_get ('upload_max_filesize'))));
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}
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/**
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* gets a string explaining the error
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* @param $code the error code
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* @returns a string explaining the error
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*/
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function
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jirafeau_upload_errstr ($code)
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{
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switch ($code)
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{
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case UPLOAD_ERR_INI_SIZE:
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case UPLOAD_ERR_FORM_SIZE:
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return t('Your file exceeds the maximum authorized file size. ');
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break;
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case UPLOAD_ERR_PARTIAL:
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case UPLOAD_ERR_NO_FILE:
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return
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t
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('Your file was not uploaded correctly. You may succeed in retrying. ');
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break;
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case UPLOAD_ERR_NO_TMP_DIR:
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case UPLOAD_ERR_CANT_WRITE:
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case UPLOAD_ERR_EXTENSION:
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return t('Internal error. You may not succeed in retrying. ');
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break;
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default:
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break;
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}
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return t('Unknown error. ');
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}
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/** Remove link and it's file
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* @param $link the link's name (hash)
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*/
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function
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jirafeau_delete_link ($link)
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{
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$l = jirafeau_get_link ($link);
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if (!count ($l))
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return;
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jirafeau_clean_rm_link ($link);
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$md5 = $l['md5'];
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$p = s2p ("$md5");
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$counter = 1;
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if (file_exists (VAR_FILES . $p . $md5. '_count'))
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{
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$content = file (VAR_FILES . $p . $md5. '_count');
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$counter = trim ($content[0]);
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}
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$counter--;
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if ($counter >= 1)
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{
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$handle = fopen (VAR_FILES . $p . $md5. '_count', 'w');
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fwrite ($handle, $counter);
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fclose ($handle);
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}
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if ($counter == 0)
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jirafeau_clean_rm_file ($md5);
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}
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/**
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* Delete a file and it's links.
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*/
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function
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jirafeau_delete_file ($md5)
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{
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$count = 0;
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/* Get all links files. */
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$stack = array (VAR_LINKS);
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while (($d = array_shift ($stack)) && $d != NULL)
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{
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$dir = scandir ($d);
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foreach ($dir as $node)
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{
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if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 ||
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preg_match ('/\.tmp/i', "$node"))
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continue;
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if (is_dir ($d . $node))
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{
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/* Push new found directory. */
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$stack[] = $d . $node . '/';
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}
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elseif (is_file ($d . $node))
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{
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/* Read link informations. */
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$l = jirafeau_get_link (basename ($node));
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if (!count ($l))
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continue;
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if ($l['md5'] == $md5)
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{
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$count++;
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jirafeau_delete_link ($node);
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}
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}
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}
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}
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jirafeau_clean_rm_file ($md5);
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return $count;
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}
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/**
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* handles an uploaded file
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* @param $file the file struct given by $_FILE[]
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* @param $one_time_download is the file a one time download ?
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* @param $key if not empty, protect the file with this key
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* @param $time the time of validity of the file
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* @param $ip uploader's ip
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* @returns an array containing some information
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* 'error' => information on possible errors
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* 'link' => the link name of the uploaded file
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* 'delete_link' => the link code to delete file
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*/
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function
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jirafeau_upload ($file, $one_time_download, $key, $time, $ip)
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{
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if (empty ($file['tmp_name']) || !is_uploaded_file ($file['tmp_name']))
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{
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return (array(
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'error' =>
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array ('has_error' => true,
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'why' => jirafeau_upload_errstr ($file['error'])),
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'link' => '',
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'delete_link' => ''));
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}
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/* array representing no error */
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$noerr = array ('has_error' => false, 'why' => '');
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/* file informations */
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$md5 = md5_file ($file['tmp_name']);
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$name = trim ($file['name']);
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$mime_type = $file['type'];
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$size = $file['size'];
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/* does file already exist ? */
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$rc = false;
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$p = s2p ("$md5");
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if (file_exists (VAR_FILES . $p . $md5))
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{
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$rc = unlink ($file['tmp_name']);
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}
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elseif ((file_exists (VAR_FILES . $p) || @mkdir (VAR_FILES . $p, 0755, true))
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&& move_uploaded_file ($file['tmp_name'], VAR_FILES . $p . $md5))
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{
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$rc = true;
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}
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if (!$rc)
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{
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return (array(
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'error' =>
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array ('has_error' => true,
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'why' => t('Internal error during file creation.')),
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'link' =>'',
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'delete_link' => ''));
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}
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/* increment or create count file */
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$counter = 0;
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if (file_exists (VAR_FILES . $p . $md5 . '_count'))
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{
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$content = file (VAR_FILES . $p . $md5. '_count');
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$counter = trim ($content[0]);
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}
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$counter++;
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$handle = fopen (VAR_FILES . $p . $md5. '_count', 'w');
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fwrite ($handle, $counter);
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fclose ($handle);
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/* Create delete code. */
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$delete_link_code = 0;
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for ($i = 0; $i < 8; $i++)
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$delete_link_code .= dechex (rand (0, 16));
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/* md5 password or empty */
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$password = '';
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if (!empty ($key))
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$password = md5 ($key);
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/* create link file */
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$link_tmp_name = VAR_LINKS . $md5 . rand (0, 10000) . ' .tmp';
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$handle = fopen ($link_tmp_name, 'w');
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fwrite ($handle,
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$name . NL. $mime_type . NL. $size . NL. $password . NL. $time .
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NL . $md5. NL . ($one_time_download ? 'O' : 'R') . NL.date ('U') .
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NL. $ip . NL. $delete_link_code . NL);
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fclose ($handle);
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$md5_link = base_16_to_64 (md5_file ($link_tmp_name));
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$l = s2p ("$md5_link");
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if (!@mkdir (VAR_LINKS . $l, 0755, true) ||
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!rename ($link_tmp_name, VAR_LINKS . $l . $md5_link))
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{
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if (file_exists ($link_tmp_name))
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unlink ($link_tmp_name);
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$counter--;
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if ($counter >= 1)
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{
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$handle = fopen (VAR_FILES . $p . $md5. '_count', 'w');
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fwrite ($handle, $counter);
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fclose ($handle);
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}
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else
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{
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jirafeau_clean_rm_file ($md5_link);
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}
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return (array(
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'error' =>
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array ('has_error' => true,
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'why' => t('Internal error during file creation. ')),
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'link' =>'',
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'delete_link' => ''));
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}
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return (array ('error' => $noerr,
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'link' => $md5_link,
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'delete_link' => $delete_link_code));
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}
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/**
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* tells if a mime-type is viewable in a browser
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* @param $mime the mime type
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* @returns a boolean telling if a mime type is viewable
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*/
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function
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jirafeau_is_viewable ($mime)
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{
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if (!empty ($mime))
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{
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/* Actually, verify if mime-type is an image or a text. */
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$viewable = array ('image', 'text');
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$decomposed = explode ('/', $mime);
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return in_array ($decomposed[0], $viewable);
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}
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return false;
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}
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// Error handling functions.
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//! Global array that contains all registered errors.
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$error_list = array ();
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/**
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* Adds an error to the list of errors.
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* @param $title the error's title
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* @param $description is a human-friendly description of the problem.
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*/
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function
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add_error ($title, $description)
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{
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global $error_list;
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$error_list[] = '<p>' . $title. '<br />' . $description. '</p>';
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}
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/**
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* Informs whether any error has been registered yet.
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* @return true if there are errors.
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*/
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function
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has_error ()
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{
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global $error_list;
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return !empty ($error_list);
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}
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/**
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* Displays all the errors.
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*/
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function
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show_errors ()
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{
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if (has_error ())
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{
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global $error_list;
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echo '<div class="error">';
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foreach ($error_list as $error)
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{
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echo $error;
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}
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echo '</div>';
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}
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}
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function check_errors ()
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{
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if (file_exists (JIRAFEAU_ROOT . 'install.php')
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&& !file_exists (JIRAFEAU_ROOT . 'lib/config.local.php'))
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{
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header('Location: install.php');
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exit;
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}
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/* check if the destination dirs are writable */
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$writable = is_writable (VAR_FILES) && is_writable (VAR_LINKS);
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/* Checking for errors. */
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if (!is_writable (VAR_FILES))
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add_error (t('The file directory is not writable!'), VAR_FILES);
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if (!is_writable (VAR_LINKS))
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add_error (t('The link directory is not writable!'), VAR_LINKS);
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/* Check if the install.php script is still in the directory. */
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if (file_exists (JIRAFEAU_ROOT . 'install.php'))
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add_error (t('Installer script still present'),
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t('Please make sure to delete the installer script ' .
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'"install.php" before continuing.'));
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}
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/**
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* Read link informations
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* @return array containing informations.
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*/
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function
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jirafeau_get_link ($hash)
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{
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$out = array ();
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$link = VAR_LINKS . s2p ("$hash") . $hash;
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if (!file_exists ($link))
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return $out;
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$c = file ($link);
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$out['file_name'] = trim ($c[0]);
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$out['mime_type'] = trim ($c[1]);
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$out['file_size'] = trim ($c[2]);
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$out['key'] = trim ($c[3], NL);
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$out['time'] = trim ($c[4]);
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$out['md5'] = trim ($c[5]);
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$out['onetime'] = trim ($c[6]);
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$out['upload_date'] = trim ($c[7]);
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$out['ip'] = trim ($c[8]);
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$out['link_code'] = trim ($c[9]);
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return $out;
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}
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/**
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* List files in admin interface.
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*/
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function
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jirafeau_admin_list ($name, $file_hash, $link_hash)
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{
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echo '<fieldset><legend>';
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if (!empty ($name))
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echo t('Filename') . ": $name ";
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if (!empty ($file_hash))
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echo t('file') . ": $file_hash ";
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if (!empty ($link_hash))
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echo t('link') . ": $link_hash ";
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if (empty ($name) && empty ($file_hash) && empty ($link_hash))
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echo t('List all files');
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echo '</legend>';
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echo '<table>';
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echo '<tr>';
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echo '<td>' . t('Filename') . '</td>';
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echo '<td>' . t('Type') . '</td>';
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echo '<td>' . t('Size') . '</td>';
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echo '<td>' . t('Expire') . '</td>';
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echo '<td>' . t('Onetime') . '</td>';
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echo '<td>' . t('Upload date') . '</td>';
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echo '<td>' . t('Origin') . '</td>';
|
||
echo '<td>' . t('Action') . '</td>';
|
||
echo '</tr>';
|
||
|
||
/* Get all links files. */
|
||
$stack = array (VAR_LINKS);
|
||
while (($d = array_shift ($stack)) && $d != NULL)
|
||
{
|
||
$dir = scandir ($d);
|
||
foreach ($dir as $node)
|
||
{
|
||
if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 ||
|
||
preg_match ('/\.tmp/i', "$node"))
|
||
continue;
|
||
if (is_dir ($d . $node))
|
||
{
|
||
/* Push new found directory. */
|
||
$stack[] = $d . $node . '/';
|
||
}
|
||
elseif (is_file ($d . $node))
|
||
{
|
||
/* Read link informations. */
|
||
$l = jirafeau_get_link ($node);
|
||
if (!count ($l))
|
||
continue;
|
||
|
||
/* Filter. */
|
||
if (!empty ($name) && !preg_match ("/$name/i", $l['file_name']))
|
||
continue;
|
||
if (!empty ($file_hash) && $file_hash != $l['md5'])
|
||
continue;
|
||
if (!empty ($link_hash) && $link_hash != $node)
|
||
continue;
|
||
/* Print link informations. */
|
||
echo '<tr>';
|
||
echo '<td>' .
|
||
'<form action = "admin.php" method = "post">' .
|
||
'<input type = "hidden" name = "action" value = "download"/>' .
|
||
'<input type = "hidden" name = "link" value = "' . $node . '"/>' .
|
||
'<input type = "submit" value = "' . $l['file_name'] . '" />' .
|
||
'</form>';
|
||
echo '</td>';
|
||
echo '<td>' . $l['mime_type'] . '</td>';
|
||
echo '<td>' . jirafeau_human_size ($l['file_size']) . '</td>';
|
||
echo '<td>' . ($l['time'] == -1 ? '' : strftime ('%c', $l['time'])) .
|
||
'</td>';
|
||
echo '<td>' . $l['onetime'] . '</td>';
|
||
echo '<td>' . strftime ('%c', $l['upload_date']) . '</td>';
|
||
echo '<td>' . $l['ip'] . '</td>';
|
||
echo '<td>' .
|
||
'<form action = "admin.php" method = "post">' .
|
||
'<input type = "hidden" name = "action" value = "delete_link"/>' .
|
||
'<input type = "hidden" name = "link" value = "' . $node . '"/>' .
|
||
'<input type = "submit" value = "' . t('Del link') . '" />' .
|
||
'</form>' .
|
||
'<form action = "admin.php" method = "post">' .
|
||
'<input type = "hidden" name = "action" value = "delete_file"/>' .
|
||
'<input type = "hidden" name = "md5" value = "' . $l['md5'] . '"/>' .
|
||
'<input type = "submit" value = "' . t('Del file and links') . '" />' .
|
||
'</form>' .
|
||
'</td>';
|
||
echo '</tr>';
|
||
}
|
||
}
|
||
}
|
||
echo '</table></fieldset>';
|
||
}
|
||
|
||
/**
|
||
* Clean expired files.
|
||
* @return number of cleaned files.
|
||
*/
|
||
function
|
||
jirafeau_admin_clean ()
|
||
{
|
||
$count = 0;
|
||
/* Get all links files. */
|
||
$stack = array (VAR_LINKS);
|
||
while (($d = array_shift ($stack)) && $d != NULL)
|
||
{
|
||
$dir = scandir ($d);
|
||
|
||
foreach ($dir as $node)
|
||
{
|
||
if (strcmp ($node, '.') == 0 || strcmp ($node, '..') == 0 ||
|
||
preg_match ('/\.tmp/i', "$node"))
|
||
continue;
|
||
|
||
if (is_dir ($d . $node))
|
||
{
|
||
/* Push new found directory. */
|
||
$stack[] = $d . $node . '/';
|
||
}
|
||
elseif (is_file ($d . $node))
|
||
{
|
||
/* Read link informations. */
|
||
$l = jirafeau_get_link (basename ($node));
|
||
if (!count ($l))
|
||
continue;
|
||
$p = s2p ($l['md5']);
|
||
if ($l['time'] > 0 && $l['time'] < time () || // expired
|
||
!file_exists (VAR_FILES . $p . $l['md5']) || // invalid
|
||
!file_exists (VAR_FILES . $p . $l['md5'] . '_count')) // invalid
|
||
{
|
||
jirafeau_delete_link ($node);
|
||
$count++;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return $count;
|
||
}
|
||
?>
|