Fully end to end encrypted anonymous chat program. Server only stores public key lookup for users and the encrypted messages. No credentials are transfered to the server, but kept in local browser storage. This allows 100% safe chatting.
https://safechat.ch
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54 lines
1.9 KiB
54 lines
1.9 KiB
<?php |
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/*! @file |
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@id $Id$ |
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@see @ref messagetable for the database schema |
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@page database Database |
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@section messagetable Message Table |
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<table> |
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<caption>Table: message</caption> |
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<tr><th>Colum Name</th><th>SQL Type</th><th>Description</th></tr> |
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<tr><td>id</td><td>int, primary key</td><td>Incrementing message id starting at 1.</td></tr> |
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<tr><td>time</td><td>timestamp</td><td>Time when message has been stored in the database.</td></tr> |
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<tr><td>user</td><td>varchar(50), references \ref usertable "user (name)"</td><td>The sender's user name (pseudonym).</td></tr> |
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<tr><td>msg</td><td>longtext</td><td>The encryped and armored message text.</td></tr> |
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</table> |
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*/ |
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// 1 2 3 4 5 6 7 8 |
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// 45678901234567890123456789012345678901234567890123456789012345678901234567890 |
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require_once("opendb.php"); |
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try { |
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$query = <<<EOD |
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create table if not exists |
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message ( |
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id |
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int primary key not null auto_increment |
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comment "id of the message, it is used in the client to check if a message has already been downloaded or not", |
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time |
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timestamp default current_timestamp |
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comment "time when the message has been stored on the server", |
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user |
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varchar(50) not null |
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comment "name of the user that sent the message", |
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msg |
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longtext not null |
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comment "message content, must be armored gnupg encrypted format", |
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foreign key (user) |
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references user(name) |
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on delete cascade |
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on update cascade |
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) character set utf8 engine=innodb |
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comment="table to hold all messages for later download by the receiver"; |
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EOD; |
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$db->query($query); |
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$db->query('set global max_allowed_packet=1000000000'); |
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$db->query('set global net_buffer_length=1000000'); |
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} catch (Exception $e) { |
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error('database error on server'); |
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} |
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?>
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