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codeberg.eu subdomain support

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Codeberg 2020-10-07 15:48:57 +02:00
parent 926aeee281
commit 97b47db499
1 changed files with 43 additions and 16 deletions
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59
var/www/pages/index.php
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@ -6,36 +6,62 @@ function send_response($code, $message = "") {
exit(); exit();
} }
$domain_parts = explode('.', $_SERVER['HTTP_HOST']);
$subdomain = implode(".", array_slice($domain_parts, 0, -2));
$tld = end($domain_parts);
$request_uri = explode("?", $_SERVER["REQUEST_URI"])[0]; $request_uri = explode("?", $_SERVER["REQUEST_URI"])[0];
$request_url = filter_var($request_uri, FILTER_SANITIZE_URL); $request_url = filter_var($request_uri, FILTER_SANITIZE_URL);
$request_url = str_replace("%20", " ", $request_url); $request_url = str_replace("%20", " ", $request_url);
$request_url_parts = explode("/", $request_url);
$request_url_parts = array_diff($request_url_parts, array("")); # Remove empty parts in URL
if ($request_url === "/" and $_SERVER["HTTP_HOST"] === "codeberg.eu") { if ($tld === "org") {
$subdomain_repo = array(
"docs" => "docs",
"fonts" => "codeberg-fonts",
"get-it-on" => "get-it-on"
);
if (array_key_exists($subdomain, $subdomain_repo)) {
$owner = $subdomain_repo[$subdomain];
} else {
$owner = strtolower(array_shift($request_url_parts));
if (!$owner) {
header("Location: https://codeberg.eu");
exit;
}
if (strpos($owner, ".") === false) {
$h = "Location: https://" . $owner . ".codeberg.eu/" . implode("/", $request_url_parts);
if ($_SERVER['QUERY_STRING'] !== "")
$h .= "?" . $_SERVER['QUERY_STRING'];
header($h);
exit;
}
}
} else {
$owner = strtolower($subdomain);
if (strpos($owner, ".") !== false)
send_response(200, "Pages not supported for user names with dots. Please rename your username to use Codeberg pages.");
}
if ($owner == "codeberg-fonts" || $owner == "get-it-on")
header("Access-Control-Allow-Origin: *");
if (!$owner) {
send_response(200, file_get_contents("./default-page.html")); send_response(200, file_get_contents("./default-page.html"));
} }
# Restrict allowed characters in request URI: # Restrict allowed characters in request URI:
if (preg_match("/^\/[a-zA-Z0-9_ +\-\/\.]*\$/", $request_url) != 1) { if (preg_match("/^\/[a-zA-Z0-9_ +\-\/\.]*\$/", $request_url) != 1)
send_response(404, "invalid request URL"); send_response(404, "invalid request URL");
}
$git_prefix = "/data/git/gitea-repositories"; $git_prefix = "/data/git/gitea-repositories";
$parts = explode("/", $request_url);
$parts = array_diff($parts, array("")); # Remove empty parts in URL
$parts_dot = explode(".",$_SERVER["HTTP_HOST"]);
if (count($parts_dot) != 3) {
send_response(404, "invalid subdomain");
}
$owner = $parts_dot[0];
$git_root = realpath("$git_prefix/$owner/pages.git"); $git_root = realpath("$git_prefix/$owner/pages.git");
$file_url = implode("/", $parts); $file_url = implode("/", $request_url_parts);
# Ensure that only files within $git_root are accessed: # Ensure that only files within $git_root are accessed:
if (substr($git_root, 0, strlen($git_prefix)) !== $git_prefix) { if (substr($git_root, 0, strlen($git_prefix)) !== $git_prefix)
send_response(404, "this user/organization does not have codeberg pages"); send_response(404, "this user/organization does not have codeberg pages");
}
# If this is a folder, we explicitly redirect to folder URL, otherwise browsers will construct invalid relative links: # If this is a folder, we explicitly redirect to folder URL, otherwise browsers will construct invalid relative links:
$command = "sh -c \"cd '$git_root' && /usr/bin/git ls-tree 'HEAD:$file_url' > /dev/null\""; $command = "sh -c \"cd '$git_root' && /usr/bin/git ls-tree 'HEAD:$file_url' > /dev/null\"";
@ -91,7 +117,7 @@ if ($retval == 0 && count($output)) {
$revision=$output[0]; $revision=$output[0];
header('ETag: "' . $revision . '"'); header('ETag: "' . $revision . '"');
if (isset($_SERVER["HTTP_IF_NONE_MATCH"])) { if (isset($_SERVER["HTTP_IF_NONE_MATCH"])) {
$req_revision = str_replace('"', '', str_replace('W/"', '', $_SERVER["HTTP_IF_NONE_MATCH"])); $req_revision = str_replace('"', '', str_replace('W/"', '', $_SERVER["HTTP_IF_NONE_MATCH"]));
if ($req_revision === $revision) { if ($req_revision === $revision) {
send_response(304); send_response(304);
} }
@ -119,3 +145,4 @@ if ($retval != 0) {
## If we could directly exec+echo raw output from above, we wouldn't need to execute command twice: ## If we could directly exec+echo raw output from above, we wouldn't need to execute command twice:
passthru($command); passthru($command);