├── README.md ├── sficscan.php └── LICENSE.md /README.md: -------------------------------------------------------------------------------- 1 | SFIC 2 | ==== 3 | 4 | Simple File Integrity Checker 5 | 6 | This simple script created to help web admins be aware of intrusion of a malicious code to a web site. It scans specified directory and notifies web admin by e-mail in case of changes between scans. 7 | 8 | it supposed to run on a regular basis using CRON or occasionally using a web browser. 9 | -------------------------------------------------------------------------------- /sficscan.php: -------------------------------------------------------------------------------- 1 | 
";
 12 | 
 13 | // Start scan from the directory when the script resides or specify address
 14 | $scandir = dirname($_SERVER['SCRIPT_FILENAME']);
 15 | // $scandir = '/home/users/d/dima/';
 16 | 
 17 | // Detect server name or specify manually
 18 | if(isset($_SERVER['HTTP_HOST'])) {
 19 |         $servername = $_SERVER['HTTP_HOST'];
 20 | } elseif(isset($_SERVER['SERVER_NAME'])) {
 21 |         $servername = $_SERVER['SERVER_NAME'];
 22 | } else {
 23 | $servername ="Unknown";
 24 | }
 25 | 
 26 | $datafilename = "data.sfic";
 27 | $logfilename = "sfic.log";
 28 | 
 29 |  date_default_timezone_set("UTC");
 30 | /**
 31 |  * Exclude File List - Separate each entry with a semicolon ;
 32 |  * Full filename including path and extension. [CASE INSENSITIVE]
 33 |  */
 34 | $excludeFileList = "administrator/components/com_sh404sef/security/sh404SEF_AntiFlood_Data.dat;error_log;backup.zip";
 35 | 
 36 | /**
 37 |  * Exclude Extension List - Separate each entry with a semicolon ;
 38 |  * Only extension type. [CASE INSENSITIVE]
 39 |  * Do not leave trailing semicolon!
 40 |  */
 41 | $excludeExtensionList = "sfic;log;bak;xls";
 42 | 
 43 | /**
 44 |  * Exclude directory List - Separate each entry with a semicolon ;
 45 |  * Only relative dir name including trailing dir separator. [CASE INSENSITIVE]
 46 |  * Do not leave trailing semicolon!
 47 |  */
 48 | $excludeDirList = "cache/";
 49 | 
 50 | /**
 51 |  * Default comparison mode:
 52 |  *   attributes - by modification timestamp and size
 53 |  *   content - by file content
 54 |  */
 55 | $defaultmode = "attributes";
 56 | 
 57 | /**
 58 |  * Set emailAddressToAlert variable if you want an email alert from the server.
 59 |  */
 60 | $emailAddressToAlert = "admin@example.com";
 61 | $emailSubject = "Files on the '$servername' Web server have changed";
 62 | 
 63 | $debug = true;
 64 | /**
 65 |  * Scan Password - This value has to be sent each time to run the code.
 66 |  * Please change from the default password to anything you like
 67 |  */
 68 | $scanPassword = "pass";
 69 | 
 70 | /**
 71 |  * Scan Password - This value has to be sent each time to run the code.
 72 |  * Please change from the default password to anything you like
 73 |  */
 74 | 
 75 | function slog($string) {
 76 |     global $logfilename;
 77 |     $loghandle=fopen($logfilename,"a");
 78 |     fwrite($loghandle,$string);
 79 |     fclose($loghandle);
 80 | }
 81 | /**********************************************************
 82 |  * Start with logic of scanning and checking the code files
 83 |  ***********************************************************/
 84 | 
 85 | //Key steps in scan
 86 | //STEP 1  - Check if the password is OK. Currently disabled due to a bug
 87 | 	if (strcmp ( $_REQUEST["password"], $scanPassword )  != 0 )
 88 | 	{
 89 | 		echo "Failed to start as password is incorrect!";
 90 | 		if(!$debug) exit(0);
 91 | 	}
 92 | 
 93 | //STEP 2  - Check if user has sent the mode (otherwise use default mode)
 94 | 
 95 | $mode = $defaultMode;
 96 | 
 97 | $availableModes = ['attributes', 'content'];
 98 | if(isset($_REQUEST['mode']) && in_array($_REQUEST['mode'], $availableModes)){
 99 | $mode = $_REQUEST['mode'];
100 | }
101 | 
102 | //STEP 2 - prepare exclusion data
103 | 
104 | if (isset($excludeDirList)) {
105 |     $offdir=explode(';',strtolower($excludeDirList));
106 | } else {
107 |     $offdir=array();
108 | }
109 | 
110 | if (isset($excludeFileList)) {
111 |     $offfile=explode(';',strtolower($excludeFileList));
112 | } else {
113 |     $offfile=array();
114 | }
115 | 
116 | if (isset($excludeExtensionList)) {
117 |     $offext=explode(';',strtolower($excludeExtensionList));
118 | } else {
119 |     $offext=array();
120 | }
121 | 
122 | 
123 | //STEP 3 - Check if previously saved data exists and use it
124 | 
125 | if(substr($scandir,strlen($scandir)-1)!==DIRECTORY_SEPARATOR) $scandir.=DIRECTORY_SEPARATOR;
126 | 
127 | $olddata=array();
128 |         if (file_exists($scandir.$datafilename)) {
129 |     $datafile=fopen($scandir.$datafilename,"r");
130 |     if ($datafile) {
131 |     while (($buffer = fgets($datafile)) !== false) {
132 |         $line=explode("\t",str_replace("\n","",$buffer));
133 |         $entry=array(
134 |         "namehash" => $line[0],
135 |         "checkhash" => $line[1],
136 |         "date" => $line[2],
137 |         "size" => $line[3],
138 |         "name" => $line[4],
139 |         "ext" => $line[5],
140 |         );
141 |         $path_parts = pathinfo(strtolower($entry['name']));
142 |         $processpath=true;
143 |         foreach ($offdir as $dir)
144 |             if($dir==substr($entry["name"],0,min(strlen($dir),strlen($entry["name"]))))
145 |                     $processpath=false;
146 |         $fpath=substr($entry['name'],0,strlen($entry['name'])-strlen($path_parts['basename']));
147 |         if(!(in_array(strtolower($entry['ext']),$offext)) && $processpath && !(in_array(strtolower($entry['name']),$offfile))) {
148 |             $olddata[$line[0]]=$entry;
149 |         }
150 |     }
151 |     fclose($datafile);
152 | }
153 | }
154 | if(count($olddata)>0) $oldsettings=array_shift($olddata);
155 | 
156 | if (!file_exists($scandir)) {
157 |  slog("Directory $scandir does not exist.\n");
158 |  exit (2);
159 | }
160 | $changed=array();
161 | $deleted=array();
162 | $added=array();
163 | $newdata=array();
164 | slog(date("Y-m-d H:i:s")."  Processing '$scandir'\n");
165 | $it = new RecursiveDirectoryIterator($scandir);
166 | $iterator = new RecursiveIteratorIterator($it);
167 | $fff = iterator_to_array($iterator, true);
168 | 
169 | foreach($fff as $filename) {
170 | $shortname=substr($filename, strlen($scandir));
171 | $justname=basename($filename);
172 | $fpath=substr($shortname,0,strlen($shortname)-strlen($justname));
173 | $path_parts = pathinfo($filename);
174 | $extension=strtolower($path_parts ['extension']);
175 | 
176 |         $processpath=true;
177 |         foreach ($offdir as $dir)
178 |             if($dir==substr($shortname,0,min(strlen($dir),strlen($shortname))))
179 |                     $processpath=false;
180 | 
181 |         if(!in_array(strtolower($extension),$offext) && $processpath && !in_array(strtolower($shortname),$offfile)) {
182 | 
183 |     switch ($mode) {
184 |         case 'attributes':
185 |             $fhash=md5(filesize($filename).filemtime($filename));
186 |             break;
187 |         case 'content':
188 |             $fhash=md5_file($filename);
189 |             break;
190 |         default:
191 |             $fhash="Wrong mode specified";
192 |     }
193 | 
194 |     $filedata=array(
195 |         "namehash" => md5($shortname),
196 |         "checkhash" => $fhash,
197 |         "date" => date("Y-m-d H:i:s",filemtime($filename)),
198 |         "size" => filesize($filename),
199 |         "name" => $shortname,
200 |         "ext" => $extension,
201 |         );
202 | 
203 | $newdata[$filedata["namehash"]]=$filedata;
204 | 
205 | if(isset($olddata[$filedata["namehash"]])) {
206 |     if($olddata[$filedata["namehash"]]["checkhash"]==$filedata["checkhash"]) {
207 |     } else {
208 |         $changed[$filedata["namehash"]]["old"]=$olddata[$filedata["namehash"]];
209 |         $changed[$filedata["namehash"]]["new"]=$filedata;
210 |     }
211 |     unset($olddata[$filedata["namehash"]]);
212 | } else {
213 |     if(stripos($filedata["checkhash"],"excluded")===false) $added[$filedata["namehash"]]=$filedata;
214 | }
215 | 
216 | }
217 | }
218 | If(count($olddata)>0) {
219 |     foreach($olddata as $index=>$filedata) {
220 |         if(stripos($filedata["checkhash"],"excluded")===false) $deleted[$index]=$filedata;
221 |     }
222 | 
223 | }
224 | 
225 | //STEP 4 - Notify admin in case of changes
226 | $changes ="";
227 | if(count($changed)>0) {
228 |     $changes .= "Changed:\n";
229 |     foreach($changed as $filedata) $changes .= " ".$filedata["old"]["name"]." (".$filedata["old"]["date"]."), ".$filedata["old"]["size"]." -> ".$filedata["new"]["size"]." bytes\n";
230 |     $changes .= "\n";
231 | }
232 | if(count($added)>0) {
233 |     $changes .= "Added:\n";
234 |     foreach($added as $filedata) $changes .= " ".$filedata["name"]." (".$filedata["date"]."), ".$filedata["size"]." bytes\n";
235 |     $changes .= "\n";
236 | }
237 | if(count($deleted)>0) {
238 |     $changes .= "Deleted:\n";
239 |     foreach($deleted as $filedata) $changes .= " ".$filedata["name"]." (".$filedata["date"]."), ".$filedata["size"]." bytes\n";
240 |     $changes .= "\n";
241 | }
242 | echo $changes;
243 | $summary=count($newdata)." files scanned, ".count($changed)." changed, ".count($added)." added, ".count($deleted)." deleted\n";
244 | 
245 | if(count($changed)+count($added)+count($deleted)>0) {
246 |     if($emailAddressToAlert <> ""){
247 |    $headers = "Return-path: $emailAddressToAlert\r\n";
248 |                 $headers .= "Reply-to: $emailAddressToAlert\r\n";
249 |                 $headers .= "Content-Type: text/plain\r\n";
250 |                 $headers .= "Content-Transfer-Encoding: 7bit\r\n";
251 |                 $headers .= "From: $emailAddressToAlert\r\n";
252 |                 $headers .= "X-Priority: 3\r\n";
253 |                 $headers .= "MIME-Version: 1.0\r\n";
254 |                 $headers .= "Organization: $servername\r\n";
255 |                 $headers .= "\n\n";
256 | 			//Add the new hash value to the email
257 |         $emailBody = "Some files in the '$scandir' folder have changed since ".$oldsettings["date"].".\n".$summary."\n".
258 |                 $changes. "\nScanned in ".(microtime(true)-$time_start)." seconds.\n";
259 | 
260 | 			mail($emailAddressToAlert, $emailSubject, $emailBody, $headers); //Simple mail function for alert.
261 | 
262 | 		}
263 | 
264 | }
265 | slog($summary);
266 | 
267 | // Write new data to a file
268 | 
269 | $datafile=fopen($scandir.$datafilename,"w");
270 | fwrite($datafile,"---\t---\t".date("Y-m-d H:i:s")."\t---\t".$scandir."\t".$mode."\n");
271 | foreach($newdata as $filedata) fwrite($datafile,$filedata["namehash"]."\t".$filedata["checkhash"]."\t".$filedata["date"]."\t".$filedata["size"]."\t".$filedata["name"]."\t".$filedata["ext"]."\n");
272 | fclose($datafile);
273 | slog(date("Y-m-d H:i:s")."  Done in ".(microtime(true)-$time_start)." seconds!\n\n");
274 | echo "\nDone in ".(microtime(true)-$time_start)." seconds!
"; 275 | 276 | ?> 277 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. 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No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------