mirror of
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227 lines
7.3 KiB
C++
227 lines
7.3 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsPermissions.h"
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#include "nsUtils.h"
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#include "plstr.h"
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#include "nsVoidArray.h"
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#include "prmem.h"
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#include "nsIPref.h"
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#include "nsIServiceManager.h"
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#include "nsIIOService.h"
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#define image_behaviorPref "network.image.imageBehavior"
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#define image_warningPref "network.image.warnAboutImages"
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#define image_blockerPref "imageblocker.enabled"
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#define image_blockImageInMailPref "mailnews.message_display.disable_remote_image"
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typedef struct _permission_HostStruct {
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char * host;
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nsVoidArray * permissionList;
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} permission_HostStruct;
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typedef struct _permission_TypeStruct {
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PRInt32 type;
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PRBool permission;
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} permission_TypeStruct;
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#define kBehaviorPrefDefault PERMISSION_Accept
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#define kWarningPrefDefault PR_FALSE
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#define kBlockerPrefDefault PR_FALSE
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#define kBlockImageInMailPrefDefault PR_FALSE
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static PERMISSION_BehaviorEnum gBehaviorPref = kBehaviorPrefDefault;
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static PRBool gWarningPref = kWarningPrefDefault;
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static PRBool gBlockerPref = kBlockerPrefDefault;
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static PRBool gBlockImageInMailNewsPref = kBlockImageInMailPrefDefault;
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PR_STATIC_CALLBACK(int)
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image_BehaviorPrefChanged(const char * newpref, void * data) {
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PRInt32 n;
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nsCOMPtr<nsIPref> prefs(do_GetService(NS_PREF_CONTRACTID));
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if (!prefs || NS_FAILED(prefs->GetIntPref(image_behaviorPref, &n))) {
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gBehaviorPref = kBehaviorPrefDefault;
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} else {
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gBehaviorPref = (PERMISSION_BehaviorEnum)n;
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}
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return 0;
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}
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PR_STATIC_CALLBACK(int)
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image_WarningPrefChanged(const char * newpref, void * data) {
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PRBool x;
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nsCOMPtr<nsIPref> prefs(do_GetService(NS_PREF_CONTRACTID));
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if (!prefs || NS_FAILED(prefs->GetBoolPref(image_warningPref, &x))) {
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x = kWarningPrefDefault;
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}
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gWarningPref = x;
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return 0;
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}
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PR_STATIC_CALLBACK(int)
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image_BlockerPrefChanged(const char * newpref, void * data) {
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PRBool x;
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nsCOMPtr<nsIPref> prefs(do_GetService(NS_PREF_CONTRACTID));
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if (!prefs || NS_FAILED(prefs->GetBoolPref(image_blockerPref, &x))) {
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x = kBlockerPrefDefault;
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}
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gBlockerPref = x;
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return 0;
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}
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PR_STATIC_CALLBACK(int)
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image_BlockedInMailPrefChanged(const char * newpref, void * data) {
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PRBool x;
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nsCOMPtr<nsIPref> prefs(do_GetService(NS_PREF_CONTRACTID));
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if (!prefs || NS_FAILED(prefs->GetBoolPref(image_blockImageInMailPref, &x))) {
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x = kBlockImageInMailPrefDefault;
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}
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gBlockImageInMailNewsPref = x;
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return 0;
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}
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PUBLIC void
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IMAGE_RegisterPrefCallbacks(void) {
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nsCOMPtr<nsIPref> prefs(do_GetService(NS_PREF_CONTRACTID));
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if (!prefs) {
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NS_NOTREACHED("couldn't get prefs");
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// All the prefs should still have their default values from the
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// static initializers.
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return;
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}
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// Initialize for image_behaviorPref
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image_BehaviorPrefChanged(image_behaviorPref, NULL);
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prefs->RegisterCallback(image_behaviorPref, image_BehaviorPrefChanged, NULL);
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// Initialize for image_warningPref
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image_WarningPrefChanged(image_warningPref, NULL);
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prefs->RegisterCallback(image_warningPref, image_WarningPrefChanged, NULL);
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// Initialize for image_blockerPref
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image_BlockerPrefChanged(image_blockerPref, NULL);
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prefs->RegisterCallback(image_blockerPref, image_BlockerPrefChanged, NULL);
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//Initialize for image_blockImageInMailPref
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image_BlockedInMailPrefChanged(image_blockImageInMailPref, NULL);
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prefs->RegisterCallback(image_blockImageInMailPref, image_BlockedInMailPrefChanged, NULL);
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}
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PUBLIC nsresult
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IMAGE_CheckForPermission
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(const char * hostname, const char * firstHostname, PRBool *permission) {
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/* exit if imageblocker is not enabled */
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if (!gBlockerPref) {
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*permission = (gBehaviorPref != PERMISSION_DontUse);
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return NS_OK;
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}
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/* try to make a decision based on pref settings */
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if ((gBehaviorPref == PERMISSION_DontUse)) {
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*permission = PR_FALSE;
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return NS_OK;
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}
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if (gBehaviorPref == PERMISSION_DontAcceptForeign) {
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/* compare tails of names checking to see if they have a common domain */
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/* we do this by comparing the tails of both names where each tail includes at least one dot */
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PRInt32 dotcount = 0;
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const char * tailHostname = hostname + PL_strlen(hostname) - 1;
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while (tailHostname > hostname) {
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if (*tailHostname == '.') {
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dotcount++;
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}
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if (dotcount == 2) {
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tailHostname++;
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break;
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}
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tailHostname--;
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}
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dotcount = 0;
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const char * tailFirstHostname = firstHostname + PL_strlen(firstHostname) - 1;
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while (tailFirstHostname > firstHostname) {
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if (*tailFirstHostname == '.') {
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dotcount++;
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}
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if (dotcount == 2) {
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tailFirstHostname++;
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break;
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}
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tailFirstHostname--;
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}
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if (PL_strcmp(tailFirstHostname, tailHostname)) {
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*permission = PR_FALSE;
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return NS_OK;
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}
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}
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/* use common routine to make decision */
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if (NS_SUCCEEDED(PERMISSION_Read())) {
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*permission = Permission_Check(0, hostname, IMAGEPERMISSION,
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PR_FALSE /* gWarningPref */,
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"PermissionToAcceptImage", 0);
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} else {
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*permission = PR_TRUE;
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}
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return NS_OK;
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}
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PUBLIC PRBool
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IMAGE_BlockedInMail()
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{
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return gBlockImageInMailNewsPref;
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}
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PUBLIC nsresult
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IMAGE_Block(const char* imageURL,
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nsIIOService* ioService) {
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if (!imageURL || !(*imageURL)) {
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return NS_ERROR_NULL_POINTER;
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}
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nsresult rv = NS_OK;
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nsCAutoString host;
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NS_ASSERTION(ioService, "IOService not available");
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rv = ioService->ExtractUrlPart(nsDependentCString(imageURL),
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nsIIOService::url_Host |
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nsIIOService::url_Port, host);
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Permission_AddHost((char*)host.get(), PR_FALSE, IMAGEPERMISSION, PR_TRUE);
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return NS_OK;
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}
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