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Verify that source IP is valid for server requests

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Currently, server authentication for updating the ladder and for
uploading replays is done by comparing the hash of the token provided
by the server to the hash on record. This commit adds a second layer
of authentication by also verifying that the request actually
originates from the Pokemon Showdown server in question.

For now, I have also maintained the server token check as a form of
two-factor authentication.
This commit is contained in:
Cathy J. Fitzpatrick 2013-01-31 11:31:35 -07:00
parent e3be0b3ea3
commit 1208dee10f
1 changed files with 6 additions and 4 deletions
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10
action.php
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@ -164,8 +164,9 @@ foreach ($reqs as $reqData) {
$server = @$PokemonServers[@$reqData['serverid']];
//var_export($users->getUserData($reqData['p1']));
if (!$server || $server['token'] !== md5($reqData['servertoken']))
{
if (!$server ||
($_SERVER['REMOTE_ADDR'] !== gethostbyname($server['server'])) ||
($server['token'] !== md5($reqData['servertoken']))) {
$out = 0;
break;
}
@ -187,8 +188,9 @@ foreach ($reqs as $reqData) {
$server = @$PokemonServers[@$reqData['serverid']];
//var_export($users->getUserData($reqData['p1']));
if (!$server || $server['token'] !== md5($reqData['servertoken']))
{
if (!$server ||
($_SERVER['REMOTE_ADDR'] !== gethostbyname($server['server'])) ||
($server['token'] !== md5($reqData['servertoken']))) {
$out = 0;
break;
}