/
access_api.php
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/
access_api.php
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<?php
# Mantis - a php based bugtracking system
# Copyright (C) 2000 - 2002 Kenzaburo Ito - kenito@300baud.org
# Copyright (C) 2002 - 2004 Mantis Team - mantisbt-dev@lists.sourceforge.net
# This program is distributed under the terms and conditions of the GPL
# See the README and LICENSE files for details
# --------------------------------------------------------
# $Id: access_api.php,v 1.29 2004-07-24 13:26:18 vboctor Exp $
# --------------------------------------------------------
$t_core_dir = dirname( __FILE__ ).DIRECTORY_SEPARATOR;
require_once( $t_core_dir . 'constant_inc.php' );
require_once( $t_core_dir . 'helper_api.php' );
require_once( $t_core_dir . 'authentication_api.php' );
require_once( $t_core_dir . 'user_api.php' );
require_once( $t_core_dir . 'bug_api.php' );
require_once( $t_core_dir . 'project_api.php' );
### Access Control API ###
# --------------------
# Function to be called when a user is attempting to access a page that
# he/she is not authorised to. This outputs an access denied message then
# re-directs to the mainpage.
function access_denied() {
if ( !php_version_at_least( '4.1.0' ) ) {
global $_SERVER;
}
if ( !auth_is_user_authenticated() ) {
if ( isset( $_SERVER['REQUEST_URI'] ) ) {
$p_return_page = string_url( $_SERVER['REQUEST_URI'] );
print_header_redirect( 'login_page.php?return=' . $p_return_page );
} else {
print_header_redirect( 'login_page.php' );
}
} else {
PRINT '<center>';
PRINT '<p>'.error_string(ERROR_ACCESS_DENIED).'</p>';
print_bracket_link( 'main_page.php', lang_get( 'proceed' ) );
PRINT '</center>';
}
exit;
}
#===================================
# Caching
#===================================
# SECURITY NOTE: cache globals are initialized here to prevent them
# being spoofed if register_globals is turned on
$g_cache_access_matrix = array();
$g_cache_access_matrix_project_ids = array();
$g_cache_access_matrix_user_ids = array();
# --------------------
function access_cache_matrix_project( $p_project_id ) {
global $g_cache_access_matrix, $g_cache_access_matrix_project_ids;
$c_project_id = db_prepare_int( $p_project_id );
if ( ALL_PROJECTS == $c_project_id ) {
return array();
}
if ( !in_array( (int)$p_project_id, $g_cache_access_matrix_project_ids ) ) {
$t_project_user_list_table = config_get( 'mantis_project_user_list_table' );
$query = "SELECT user_id, access_level
FROM $t_project_user_list_table
WHERE project_id='$c_project_id'";
$result = db_query( $query );
$count = db_num_rows( $result );
for ( $i=0 ; $i < $count ; $i++ ) {
$row = db_fetch_array( $result );
$g_cache_access_matrix[(int)$row['user_id']][(int)$p_project_id] = (int)$row['access_level'];
}
$g_cache_access_matrix_project_ids[] = (int)$p_project_id;
}
$t_results = array();
foreach( $g_cache_access_matrix as $t_user ) {
if ( isset( $t_user[(int)$p_project_id] ) ) {
$t_results[(int)$p_project_id] = $t_user[(int)$p_project_id];
}
}
return $t_results;
}
# --------------------
function access_cache_matrix_user( $p_user_id ) {
global $g_cache_access_matrix, $g_cache_access_matrix_user_ids;
$c_user_id = db_prepare_int( $p_user_id );
if ( !in_array( (int)$p_user_id, $g_cache_access_matrix_user_ids ) ) {
$t_project_user_list_table = config_get( 'mantis_project_user_list_table' );
$query = "SELECT project_id, access_level
FROM $t_project_user_list_table
WHERE user_id='$c_user_id'";
$result = db_query( $query );
$count = db_num_rows( $result );
# make sure we always have an array to return
$g_cache_access_matrix[(int)$p_user_id] = array();
for ( $i=0 ; $i < $count ; $i++ ) {
$row = db_fetch_array( $result );
$g_cache_access_matrix[(int)$p_user_id][(int)$row['project_id']] = (int)$row['access_level'];
}
$g_cache_access_matrix_user_ids[] = (int)$p_user_id;
}
return $g_cache_access_matrix[(int)$p_user_id];
}
#===================================
# Boolean queries and ensures
#===================================
# --------------------
# Check the current user's access against the given value and return true
# if the user's access is equal to or higher, false otherwise.
#
# This function only checks the user's global access level, ignoring any
# overrides they might have at a project level
function access_has_global_level( $p_access_level, $p_user_id = null ) {
# Short circuit the check in this case
if ( NOBODY == $p_access_level ) {
return false;
}
if ( $p_user_id === null ) {
$p_user_id = auth_get_current_user_id();
}
# Deal with not logged in silently in this case
# @@@ we may be able to remove this and just error
# and once we default to anon login, we can remove it for sure
if ( !auth_is_user_authenticated() ) {
return false;
}
$t_access_level = user_get_field( $p_user_id, 'access_level' );
return ( $t_access_level >= $p_access_level );
}
# --------------------
# Check if the user has the specified global access level
# and deny access to the page if not
function access_ensure_global_level( $p_access_level, $p_user_id = null ) {
if ( !access_has_global_level( $p_access_level, $p_user_id ) ) {
access_denied();
}
}
# --------------------
# Check the current user's access against the given value and return true
# if the user's access is equal to or higher, false otherwise.
#
# This function checks the project access level first (for the current project
# if none is specified) and if the user is not listed, it falls back on the
# user's global access level.
function access_has_project_level( $p_access_level, $p_project_id = null, $p_user_id = null ) {
# Short circuit the check in this case
if ( NOBODY == $p_access_level ) {
return false;
}
# Deal with not logged in silently in this case
# @@@ we may be able to remove this and just error
# and once we default to anon login, we can remove it for sure
if ( !auth_is_user_authenticated() ) {
return false;
}
if ( null === $p_user_id ) {
$p_user_id = auth_get_current_user_id();
}
if ( null === $p_project_id ) {
$p_project_id = helper_get_current_project();
}
if ( ALL_PROJECTS == $p_project_id ) {
return access_has_global_level( $p_access_level, $p_user_id );
}
$t_access_level = access_get_local_level( $p_user_id, $p_project_id );
# Try to use the project access level.
# If the user is not listed in the project, then try to fall back
# to the global access level
if ( false === $t_access_level ) {
$t_project_view_state = project_get_field( $p_project_id, 'view_state' );
# If the project is private and the user isn't listed, then they
# must have the private_project_threshold access level to get in.
if ( VS_PRIVATE == $t_project_view_state ) {
return ( access_has_global_level( config_get( 'private_project_threshold' ), $p_user_id ) );
} else {
$t_access_level = user_get_field( $p_user_id, 'access_level' );
}
}
return ( $t_access_level >= $p_access_level );
}
# --------------------
# Check if the user has the specified access level for the given project
# and deny access to the page if not
function access_ensure_project_level( $p_access_level, $p_project_id = null, $p_user_id = null ) {
if ( !access_has_project_level( $p_access_level, $p_project_id, $p_user_id ) ) {
access_denied();
}
}
# --------------------
# Check the current user's access against the given value and return true
# if the user's access is equal to or higher, false otherwise.
#
# This function looks up the bug's project and performs an access check
# against that project
function access_has_bug_level( $p_access_level, $p_bug_id, $p_user_id = null ) {
# Deal with not logged in silently in this case
# @@@ we may be able to remove this and just error
# and once we default to anon login, we can remove it for sure
if ( !auth_is_user_authenticated() ) {
return false;
}
if ( $p_user_id === null ) {
$p_user_id = auth_get_current_user_id();
}
# If the bug is private and the user is not the reporter, then the
# the user must also have higher access than private_bug_threshold
if ( VS_PRIVATE == bug_get_field( $p_bug_id, 'view_state' ) &&
!bug_is_user_reporter( $p_bug_id, $p_user_id ) ) {
$p_access_level = max( $p_access_level, config_get( 'private_bug_threshold' ) );
}
$t_project_id = bug_get_field( $p_bug_id, 'project_id' );
return access_has_project_level( $p_access_level, $t_project_id, $p_user_id );
}
# --------------------
# Check if the user has the specified access level for the given bug
# and deny access to the page if not
function access_ensure_bug_level( $p_access_level, $p_bug_id, $p_user_id=null ) {
if ( !access_has_bug_level( $p_access_level, $p_bug_id, $p_user_id ) ) {
access_denied();
}
}
# --------------------
# Check the current user's access against the given value and return true
# if the user's access is equal to or higher, false otherwise.
#
# This function looks up the bugnote's bug and performs an access check
# against that bug
function access_has_bugnote_level( $p_access_level, $p_bugnote_id, $p_user_id=null ) {
if ( null===$p_user_id ) {
$p_user_id = auth_get_current_user_id();
}
# If the bug is private and the user is not the reporter, then the
# the user must also have higher access than private_bug_threshold
if ( VS_PRIVATE == bugnote_get_field( $p_bugnote_id, 'view_state' ) &&
!bugnote_is_user_reporter( $p_bugnote_id, $p_user_id ) ) {
$p_access_level = max( $p_access_level, config_get( 'private_bugnote_threshold' ) );
}
$t_bug_id = bugnote_get_field( $p_bugnote_id, 'bug_id' );
return access_has_bug_level( $p_access_level, $t_bug_id, $p_user_id );
}
# --------------------
# Check if the user has the specified access level for the given bugnote
# and deny access to the page if not
function access_ensure_bugnote_level( $p_access_level, $p_bugnote_id, $p_user_id=null ) {
if ( !access_has_bugnote_level( $p_access_level, $p_bugnote_id, $p_user_id ) ) {
access_denied();
}
}
# --------------------
# Check if the current user can close the specified bug
function access_can_close_bug ( $p_bug_id, $p_user_id=null ) {
if ( null===$p_user_id ) {
$p_user_id = auth_get_current_user_id();
}
# If allow_reporter_close is enabled, then reporters can always close
# their own bugs
if ( ON == config_get( 'allow_reporter_close' ) &&
bug_is_user_reporter( $p_bug_id, $p_user_id ) ) {
return true;
}
return access_has_bug_level( config_get( 'close_bug_threshold' ), $p_bug_id, $p_user_id );
}
# --------------------
# Make sure that the current user can close the specified bug
# See access_can_close_bug() for details.
function access_ensure_can_close_bug( $p_bug_id, $p_user_id=null ) {
if ( !access_can_close_bug( $p_bug_id, $p_user_id ) ) {
access_denied();
}
}
# --------------------
# Check if the current user can reopen the specified bug
function access_can_reopen_bug ( $p_bug_id, $p_user_id=null ) {
if ( $p_user_id === null ) {
$p_user_id = auth_get_current_user_id();
}
# If allow_reporter_reopen is enabled, then reporters can always reopen
# their own bugs
if ( ON == config_get( 'allow_reporter_reopen' ) &&
bug_is_user_reporter( $p_bug_id, $p_user_id ) ) {
return true;
}
return access_has_bug_level( config_get( 'reopen_bug_threshold' ), $p_bug_id, $p_user_id );
}
# --------------------
# Make sure that the current user can reopen the specified bug
# See access_can_reopen_bug() for details.
function access_ensure_can_reopen_bug( $p_bug_id, $p_user_id=null ) {
if ( !access_can_reopen_bug( $p_bug_id, $p_user_id ) ) {
access_denied();
}
}
#===================================
# Data Access
#===================================
function access_get_local_level( $p_user_id, $p_project_id ) {
$p_project_id = (int)$p_project_id; # 000001 is different from 1.
$t_project_level = access_cache_matrix_user( $p_user_id );
if ( isset( $t_project_level[$p_project_id] ) ) {
return $t_project_level[$p_project_id];
} else {
return false;
}
}
?>