From 39bcb09a367251bed7cfb445f546252547058e66 Mon Sep 17 00:00:00 2001
From: Freya Murphy <freya@freyacat.org>
Date: Thu, 30 May 2024 13:05:46 -0400
Subject: many changes

---
 src/web/helpers/schema.php | 236 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 236 insertions(+)
 create mode 100644 src/web/helpers/schema.php

(limited to 'src/web/helpers/schema.php')

diff --git a/src/web/helpers/schema.php b/src/web/helpers/schema.php
new file mode 100644
index 0000000..6afa43f
--- /dev/null
+++ b/src/web/helpers/schema.php
@@ -0,0 +1,236 @@
+<?php /* Copyright (c) 2024 Freya Murphy */
+
+class User {
+
+	public ?string $dn;
+	public ?string $username;
+	public ?string $email;
+	public ?string $first_name;
+	public ?string $last_name;
+
+	function __construct() {}
+
+	/**
+	 * Validates all required fields are set
+	 */
+	private function validate(): int {
+		return (
+			$this->dn == NULL ||
+			$this->username == NULL ||
+			$this->email == NULL
+		) ? 1 : 0;
+	}
+
+	/**
+	 * Loads Data from the array to self
+	 * @param array $data - the data to load
+	 * @return int 0 on success, 1 on error
+     */
+	public function from_array(array $data): int {
+		$this->dn = NULL;
+		$this->username = NULL;
+		$this->email = NULL;
+		$this->first_name = NULL;
+		$this->last_name = NULL;
+
+		foreach ($data as $key => $value) {
+			if ($value == NULL)
+				continue;
+			$type = gettype($value);
+			switch ($key) {
+				case 'dn': {
+					if ($type != 'string')
+						return 1;
+					$this->dn = $value;
+				} break;
+				case 'username': {
+					if ($type != 'string')
+						return 1;
+					$this->username = $value;
+				} break;
+				case 'email': {
+					if ($type != 'string')
+						return 1;
+					$this->email = $value;
+				} break;
+				case 'first_name': {
+					if ($type != 'string')
+						return 1;
+					$this->first_name = $value;
+				} break;
+				case 'last_name': {
+					if ($type != 'string')
+						return 1;
+					$this->last_name = $value;
+				} break;
+			}
+		}
+
+		return $this->validate();
+	}
+
+	/**
+	 * Converts the user into an array
+	 * @return ?array<string,string>
+ 	 */
+	public function to_array(): ?array {
+		if ($this->validate())
+			return NULL;
+		$data = array(
+			'dn' => $this->dn,
+			'username' => $this->username,
+			'email' => $this->email
+		);
+		if ($this->first_name)
+			$data['first_name'] = $this->first_name;
+		if ($this->last_name)
+			$data['last_name'] = $this->last_name;
+		return $data;
+	}
+
+	/**
+	 * Writes the HTTP headers
+	 */
+	public function write_headers(): int {
+		if ($this->validate())
+			return 1;
+
+		$header_username = getenv("HTTP_USERNAME_HEADER");
+		$header_email = getenv("HTTP_EMAIL_HEADER");
+		$header_first = getenv("HTTP_FIRST_NAME_HEADER");
+		$header_last = getenv("HTTP_LAST_NAME_HEADER");
+
+		header("{$header_username}: {$this->username}");
+		header("{$header_email}: {$this->email}");
+		if ($this->first_name)
+			header("{$header_first}: {$this->first_name}");
+		if ($this->last_name)
+			header("{$header_last}: {$this->last_name}");
+
+		return 0;
+	}
+
+}
+
+class Session {
+
+	public ?User $user;
+	public ?int $created;
+	public ?int $expires;
+	public ?string $token;
+
+	private int $session_lifetime_seconds;
+
+	function __construct() {
+		$this->session_lifetime_seconds = 60 * 60 * 24 * 3;
+	}
+
+	/**
+	 * Validates all required fields are set
+	 */
+	private function validate(): int {
+		if (
+			$this->user == NULL ||
+			$this->created == NULL ||
+			$this->expires == NULL ||
+			$this->token == NULL
+		) {
+			return 1;
+		}
+		if ($this->expires < time())
+			return 1;
+		return 0;
+	}
+
+	/**
+	 * Loads Data from the array to self
+	 * @param array $data - the data to load
+	 * @return int 0 on success, 1 on error
+     */
+	public function from_array(array $data): int {
+		$this->user = NULL;
+		$this->created = NULL;
+		$this->expires = NULL;
+		$this->token = NULL;
+
+		foreach ($data as $key => $value) {
+			if ($value == NULL)
+				continue;
+			$type = gettype($value);
+			switch ($key) {
+				case 'user': {
+					$this->user = new User();
+					if ($this->user->from_array($value))
+						return 1;
+				} break;
+				case 'created': {
+					if ($type != 'integer')
+						return 1;
+					$this->created = $value;
+				} break;
+				case 'expires': {
+					if ($type != 'integer')
+						return 1;
+					$this->expires = $value;
+				} break;
+				case 'token': {
+					if ($type != 'string')
+						return 1;
+					$this->token = $value;
+				} break;
+			}
+		}
+
+		return $this->validate();
+	}
+
+	/**
+	 * Renew the expiry clock
+	 */
+	public function reset_expiry(): void {
+		$this->expires = time() + $this->session_lifetime_seconds;
+	}
+
+	/**
+	 * Converts the session into an array
+     * @return ?array<string,mixed>
+ 	 */
+	public function to_array(): ?array {
+		if ($this->validate())
+			return NULL;
+		return array(
+			'user' => $this->user->to_array(),
+			'created' => $this->created,
+			'expires' => $this->expires,
+			'token' => $this->token
+		);
+	}
+
+	/**
+	 * Writes the HTTP headers
+	 */
+	public function write_headers(): int {
+		if ($this->validate())
+			return 1;
+		if ($this->user->write_headers())
+			return 1;
+
+		$cookie_name = getenv("COOKIE_NAME");
+		$cookie_options = array (
+	         'expires' => $this->expires,
+	         'path' => '/',
+			 'domain' => getenv("COOKIE_DOMAIN"),
+			 'secure' => true,
+			 'httponly' => true,
+			 'samesite' => 'Lax'
+	    );
+		setcookie(
+			$cookie_name,
+			$this->token,
+			$cookie_options
+		);
+
+		return 0;
+	}
+
+}
-- 
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