From cbbd8859c8a35a6e76594e3b39ebdce1412f4be5 Mon Sep 17 00:00:00 2001
From: Skylar Ittner <admin@netsyms.com>
Date: Fri, 9 Jun 2017 03:50:25 -0600
Subject: [PATCH] Update readme, add SQL code, remove unused function in
 required.php

---
 database.mwb | Bin 8834 -> 8836 bytes
 database.sql | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++
 readme.md    |  11 +++++
 required.php |  32 ---------------
 4 files changed, 125 insertions(+), 32 deletions(-)
 create mode 100644 database.sql

diff --git a/database.mwb b/database.mwb
index 43ba5558619082b5a7ad12d8b4d972a5c4f91357..1b3ae5f02aa5da8a7ef8c6001a35585966d63348 100644
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aWMWWD1qJ{B000930|2Q2004-SL?S>UHLouK

diff --git a/database.sql b/database.sql
new file mode 100644
index 0000000..d57bce7
--- /dev/null
+++ b/database.sql
@@ -0,0 +1,114 @@
+-- MySQL Script generated by MySQL Workbench
+-- Fri 09 Jun 2017 03:48:51 AM MDT
+-- Model: New Model    Version: 1.0
+-- MySQL Workbench Forward Engineering
+
+SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0;
+SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0;
+SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='TRADITIONAL,ALLOW_INVALID_DATES';
+
+-- -----------------------------------------------------
+-- Schema captcheck
+-- -----------------------------------------------------
+
+-- -----------------------------------------------------
+-- Schema captcheck
+-- -----------------------------------------------------
+CREATE SCHEMA IF NOT EXISTS `captcheck` DEFAULT CHARACTER SET utf8 ;
+USE `captcheck` ;
+
+-- -----------------------------------------------------
+-- Table `captcheck`.`answers`
+-- -----------------------------------------------------
+CREATE TABLE IF NOT EXISTS `captcheck`.`answers` (
+  `aid` INT NOT NULL AUTO_INCREMENT,
+  `aname` VARCHAR(45) NOT NULL,
+  `aimg` VARCHAR(45) NOT NULL,
+  PRIMARY KEY (`aid`),
+  UNIQUE INDEX `aid_UNIQUE` (`aid` ASC))
+ENGINE = InnoDB;
+
+
+-- -----------------------------------------------------
+-- Table `captcheck`.`sessions`
+-- -----------------------------------------------------
+CREATE TABLE IF NOT EXISTS `captcheck`.`sessions` (
+  `sid` INT NOT NULL AUTO_INCREMENT,
+  `skey` VARCHAR(60) NOT NULL,
+  `aid` INT NOT NULL,
+  `expired` TINYINT(1) NOT NULL DEFAULT 0,
+  `timestamp` DATETIME NOT NULL,
+  PRIMARY KEY (`sid`),
+  UNIQUE INDEX `sid_UNIQUE` (`sid` ASC),
+  INDEX `fk_sessions_answers1_idx` (`aid` ASC),
+  CONSTRAINT `fk_sessions_answers1`
+    FOREIGN KEY (`aid`)
+    REFERENCES `captcheck`.`answers` (`aid`)
+    ON DELETE NO ACTION
+    ON UPDATE NO ACTION)
+ENGINE = InnoDB;
+
+
+-- -----------------------------------------------------
+-- Table `captcheck`.`scrambled_answers`
+-- -----------------------------------------------------
+CREATE TABLE IF NOT EXISTS `captcheck`.`scrambled_answers` (
+  `sid` INT NOT NULL,
+  `aid` INT NOT NULL,
+  `acode` VARCHAR(20) NOT NULL,
+  INDEX `fk_sessions_has_answers_answers1_idx` (`aid` ASC),
+  INDEX `fk_sessions_has_answers_sessions1_idx` (`sid` ASC),
+  CONSTRAINT `fk_sessions_has_answers_sessions1`
+    FOREIGN KEY (`sid`)
+    REFERENCES `captcheck`.`sessions` (`sid`)
+    ON DELETE NO ACTION
+    ON UPDATE NO ACTION,
+  CONSTRAINT `fk_sessions_has_answers_answers1`
+    FOREIGN KEY (`aid`)
+    REFERENCES `captcheck`.`answers` (`aid`)
+    ON DELETE NO ACTION
+    ON UPDATE NO ACTION)
+ENGINE = InnoDB;
+
+
+SET SQL_MODE=@OLD_SQL_MODE;
+SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS;
+SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS;
+
+-- -----------------------------------------------------
+-- Data for table `captcheck`.`answers`
+-- -----------------------------------------------------
+START TRANSACTION;
+USE `captcheck`;
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (1, 'heart', 'heart');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (2, 'envelope', 'envelope');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (3, 'building', 'building');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (4, 'camera', 'camera');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (5, 'cloud', 'cloud');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (6, 'circle', 'circle');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (7, 'girl', 'female');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (8, 'boy', 'male');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (9, 'paper', 'file-o');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (10, 'smartphone', 'mobile');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (11, 'moon', 'moon-o');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (12, 'pencil', 'pencil');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (13, 'paint brush', 'paint-brush');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (14, 'airplane', 'plane');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (15, 'printer', 'print');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (16, 'puzzle piece', 'puzzle-piece');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (17, 'picture', 'picture-o');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (18, 'sun', 'sun-o');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (19, 'star', 'star');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (20, 'square', 'square');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (21, 'tree', 'tree');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (22, 'umbrella', 'umbrella');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (23, 'snowflake', 'snowflake-o');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (24, 'basket', 'shopping-basket');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (25, 'globe', 'globe');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (26, 'flag', 'flag');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (27, 'cube', 'cube');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (28, 'lightning', 'bolt');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (29, 'truck', 'truck');
+INSERT INTO `captcheck`.`answers` (`aid`, `aname`, `aimg`) VALUES (30, 'gear', 'cog');
+
+COMMIT;
diff --git a/readme.md b/readme.md
index 9618f53..05ca9ef 100644
--- a/readme.md
+++ b/readme.md
@@ -4,6 +4,7 @@ Captcheck
 Easy, light, self-hostable CAPTCHA service.  Works on all modern browsers and 
 IE9+.  Uses icons from Font-Awesome.
 
+
 How to use
 ----------
 
@@ -45,6 +46,16 @@ Example responses:
 `{"session":"some_session_id","result":false,"msg":"Answer incorrect."}`
 
 
+Installation
+------------
+
+1. Run composer install.
+2. Copy settings.template.php to settings.php and plug in your settings.
+3. Install the database.
+4. Customize captcheck.js with the correct api_url.
+5. Follow the How to Use section and the example setup in test.html and test.php.
+
+
 Execution Flow
 --------------
 
diff --git a/required.php b/required.php
index 557625e..7d24921 100644
--- a/required.php
+++ b/required.php
@@ -84,38 +84,6 @@ function is_empty($str) {
     return (is_null($str) || !isset($str) || $str == '');
 }
 
-/*
- * http://stackoverflow.com/a/20075147/2534036
- */
-if (!function_exists('base_url')) {
-
-    function base_url($atRoot = FALSE, $atCore = FALSE, $parse = FALSE) {
-        if (isset($_SERVER['HTTP_HOST'])) {
-            $http = isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off' ? 'https' : 'http';
-            $hostname = $_SERVER['HTTP_HOST'];
-            $dir = str_replace(basename($_SERVER['SCRIPT_NAME']), '', $_SERVER['SCRIPT_NAME']);
-
-            $core = preg_split('@/@', str_replace($_SERVER['DOCUMENT_ROOT'], '', realpath(dirname(__FILE__))), NULL, PREG_SPLIT_NO_EMPTY);
-            $core = $core[0];
-
-            $tmplt = $atRoot ? ($atCore ? "%s://%s/%s/" : "%s://%s/") : ($atCore ? "%s://%s/%s/" : "%s://%s%s");
-            $end = $atRoot ? ($atCore ? $core : $hostname) : ($atCore ? $core : $dir);
-            $base_url = sprintf($tmplt, $http, $hostname, $end);
-        } else
-            $base_url = 'http://localhost/';
-
-        if ($parse) {
-            $base_url = parse_url($base_url);
-            if (isset($base_url['path']))
-                if ($base_url['path'] == '/')
-                    $base_url['path'] = '';
-        }
-
-        return $base_url;
-    }
-
-}
-
 
 /**
  * Attempts to discover the user's IP address.