gwvplib/gwvpauth.php

   1 <?php
   2
   3 // we call it 00aaa so it gets called first
   4 $CALL_ME_FUNCTIONS["00aaa"] = "gwvp_AuthCallMe";
   5
   6 function gwvp_AuthCallMe()
   7 {
   8         global $LOGIN_TYPE;
   9         session_start();
  10
  11         if(isset($_REQUEST["q"])) {
  12                 $query = explode("/", $_REQUEST["q"]);
  13                 if($query[0] == "login") return "gwvp_AuthHandleLogin";
  14                 if($query[0] == "logout") return "gwvp_AuthHandleLogout";
  15                 if($query[0] == "register") {
  16                         if(isset($query[1])) {
  17                                 return "qwvp_attemptRegistration";
  18                         }
  19                         return "gwvp_RegistrationCall";
  20                 }
  21         }
  22         $login = gwvp_isLoggedIn();
  23
  24         error_log("authcallme as $login");
  25         if($login!== false) {
  26                 if(gwvp_IsUserAdmin(null, $login)) {
  27                         $LOGIN_TYPE = "admin";
  28                 } else {
  29                         $LOGIN_TYPE = "user";
  30                 }
  31         } else {
  32                 $LOGIN_TYPE = "anon";
  33         }
  34
  35         return false;
  36 }
  37
  38 function gwvp_AskForBasicAuth()
  39 {
  40         if(!isset($_SERVER["PHP_AUTH_USER"])) {
  41                 header('WWW-Authenticate: Basic realm="My Realm"');
  42                 header('HTTP/1.0 401 Unauthorized');
  43                 exit(0);
  44         } else return;
  45 }
  46
  47 // $levels is checked against $LOGIN_TYPE, levels can be either just "admin" or admin,user anon,user anon, etc.
  48 function gwvp_CheckAuthLevel($levels)
  49 {
  50         global $LOGIN_TYPE;
  51
  52         $spl = explode(",", $levels);
  53         foreach($spl as $levs) {
  54                 if($LOGIN_TYPE == $levs) {
  55                         return true;
  56                 }
  57         }
  58
  59         return false;
  60 }
  61
  62 function gwvp_fourZeroThree()
  63 {
  64         header("HTTP/1.0 403 Permission Denied");
  65         exit(0);
  66 }
  67
  68 function gwvp_AuthNoPerms()
  69 {
  70         gwvp_goMainPage("gwvp_AuthNoPermsBody");
  71 }
  72
  73 function gwvp_AuthNoPermsBody()
  74 {
  75         echo "You have no permissions for this page, do you need to login?";
  76 }
  77
  78 function gwvp_AuthHandleLogout()
  79 {
  80         global $BASE_URL;
  81
  82         unset($_SESSION["isloggedin"]);
  83         unset($_SESSION["username"]);
  84         unset($_SESSION["fullname"]);
  85         unset($_SESSION["usertype"]);
  86
  87         gwvp_SendMessage("info", "Logged out");
  88         header("Location: $BASE_URL");
  89 }
  90
  91 function gwvp_RegistrationCall()
  92 {
  93         if(gwvp_IsRegistrationEnabled()) {
  94                 gwvp_goMainPage("gwvp_RegistrationPageBody");
  95         } else {
  96                 gwvp_goMainPage("gwvp_RegistrationDisabledBody");
  97         }
  98 }
  99
 100 function gwvp_authUserPass($user, $pass)
 101 {
 102         $details = gwvp_getUser($user);
 103         if($details == false) {
 104                 return false;
 105         }
 106
 107         if(sha1($pass)!=$details["password"]) return false;
 108
 109         return $details["username"];
 110 }
 111
 112 function gwvp_AuthHandleLogin()
 113 {
 114         global $BASE_URL;
 115
 116         $user = "";
 117         $pass = "";
 118         if(isset($_REQUEST["username"])) $user = $_REQUEST["username"];
 119         if(isset($_REQUEST["password"])) $pass = $_REQUEST["password"];
 120
 121         if(gwvp_authUserPass($user, $pass) === false) {
 122                 gwvp_SendMessage("error", "Login Failed");
 123                 header("Location: $BASE_URL");
 124         } else {
 125                 $_SESSION["isloggedin"] = true;
 126                 $_SESSION["username"] = "$user";
 127                 $_SESSION["fullname"] = $details["fullname"];
 128                 if(gwvp_IsUserAdmin($details["email"])) {
 129                         $_SESSION["usertype"] = "admin";
 130                 } else {
 131                         $_SESSION["usertype"] = "user";
 132                 }
 133                 gwvp_SendMessage("info", "Welcome, ".$details["fullname"]." you are logged in");
 134                 header("Location: $BASE_URL");
 135                 return true;
 136         }
 137
 138 }
 139
 140 function gwvp_RegistrationPageBody()
 141 {
 142         global $BASE_URL;
 143
 144         // TODO: registration page needs to be prettier - mostly the image for the captcha
 145
 146         ?>
 147 <form method="post" action="<?php echo $BASE_URL?>/register/try">
 148         <table>
 149                 <tr>
 150                         <td>Name</td>
 151                         <td><input name="name" type="text"></td>
 152                         <td>Your Full Name</td>
 153                         <td rowspan="4">
 154                                 <?php if(gwvp_haveCaptcha()) {?>
 155                                 <img id="captcha" src="<?php echo $BASE_URL?>/securimage/" alt="CAPTCHA Image" /><br>
 156                                 <input type="text" name="captcha_code" size="10" maxlength="6" />
 157                                 <a href="#" onclick="document.getElementById('captcha').src = '<?php echo $BASE_URL?>/securimage/' + Math.random(); return false">[ Different Image ]</a>
 158                                 <?php } ?>
 159                         </td>
 160                 </tr>
 161                 <tr>
 162                         <td>Email</td>
 163                         <td><input name="email" type="text"></td>
 164                         <td>Your Email Address</td>
 165                 </tr>
 166                 <tr>
 167                         <td>User Name</td>
 168                         <td><input name="username" type="text"></td>
 169                         <td>The Name Used to Refer to you on the site</td>
 170                 </tr>
 171
 172
 173                 <tr>
 174                         <td><input type="submit" name="register" value="Register"></td>
 175                 </tr>
 176         </table>
 177 </form>
 178         <?php
 179 }
 180
 181 function qwvp_attemptRegistration()
 182 {
 183         if(gwvp_haveCaptcha()) {
 184                 $securimage = new Securimage();
 185                 if ($securimage->check($_POST['captcha_code']) == false) {
 186                   // the code was incorrect
 187                   // you should handle the error so that the form processor doesn't continue
 188
 189                   // or you can use the following code if there is no validation or you do not know how
 190                   echo "The security code entered was incorrect.<br /><br />";
 191                   echo "Please go <a href='javascript:history.go(-1)'>back</a> and try again.";
 192                 } else {
 193                         echo "code was right";
 194                 }
 195
 196         }
 197 }
 198
 199 function gwvp_checkBasicAuthLogin()
 200 {
 201         $user = false;
 202         $pass = false;
 203         if(isset($_SERVER["PHP_AUTH_USER"])) {
 204                 $user = $_SERVER["PHP_AUTH_USER"];
 205         } else return false;
 206
 207         if(isset($_SERVER["PHP_AUTH_PW"])) {
 208                 $pass = $_SERVER["PHP_AUTH_PW"];
 209         } else return false;
 210
 211         return gwvp_authUserPass($user, $pass);
 212 }
 213
 214 function gwvp_IsLoggedIn()
 215 {
 216         if(isset($_SESSION["isloggedin"])) {
 217                 if($_SESSION["isloggedin"]) {
 218                         return $_SESSION["username"];
 219                 } else return false;
 220         } else return false;
 221 }
 222
 223 function gwvp_SingleLineLoginForm()
 224 {
 225         global $BASE_URL;
 226
 227         echo "<form method=\"post\" action=\"$BASE_URL/login\">Username <input type=\"text\" name=\"username\" class=\"login\">";
 228         echo " Passowrd <input type=\"text\" name=\"password\" class=\"login\"><input type=\"submit\" name=\"login\" value=\"Login\" class=\"loginbutton\">";
 229         if(gwvp_IsRegistrationEnabled()) echo "<a href=\"$BASE_URL/register\">Register</a></form>";
 230         else echo "</form>";
 231 }
 232
 233
 234 function gwvp_IsRegistrationEnabled()
 235 {
 236         return true;
 237 }
 238
 239 // TODO translate info here
 240 function gwvp_GetFullName($login)
 241 {
 242         return $login;
 243 }
 244 ?>