/*
* Copyright (C) 2001 Matt Aubury, Philip Langdale
* Copyright (C) 2004 Crispin Flowerday
* Copyright (C) 2005 Christian Persch
* Copyright (C) 2005 Adam Hooper
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id$
*/
#include "mozilla-config.h"
#include "config.h"
#include <nsCOMPtr.h>
#include <nsIIOService.h>
#include <nsIServiceManager.h>
#include <nsIURI.h>
#include <nsIChannel.h>
#include <nsIOutputStream.h>
#include <nsIInputStream.h>
#include <nsIStorageStream.h>
#include <nsIInputStreamChannel.h>
#include <nsIScriptSecurityManager.h>
#include <nsNetCID.h>
#include <nsString.h>
#include <nsEscape.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include "EphyProtocolHandler.h"
#include "EphyUtils.h"
#include "ephy-debug.h"
#include <string.h>
static NS_DEFINE_CID(kSimpleURICID, NS_SIMPLEURI_CID);
static NS_DEFINE_CID(kInputStreamChannelCID, NS_INPUTSTREAMCHANNEL_CID);
EphyProtocolHandler::EphyProtocolHandler()
{
LOG ("EphyProtocolHandler ctor [%p]\n", this);
}
EphyProtocolHandler::~EphyProtocolHandler()
{
LOG ("EphyProtocolHandler dtor [%p]\n", this);
}
NS_IMPL_ISUPPORTS2 (EphyProtocolHandler, nsIProtocolHandler, nsIAboutModule)
/* readonly attribute string scheme; */
NS_IMETHODIMP
EphyProtocolHandler::GetScheme(nsACString &aScheme)
{
aScheme.Assign("epiphany");
return NS_OK;
}
/* readonly attribute long defaultPort; */
NS_IMETHODIMP
EphyProtocolHandler::GetDefaultPort(PRInt32 *aDefaultPort)
{
NS_ENSURE_ARG_POINTER (aDefaultPort);
*aDefaultPort = -1;
return NS_OK;
}
/* readonly attribute short protocolFlags; */
NS_IMETHODIMP
EphyProtocolHandler::GetProtocolFlags(PRUint32 *aProtocolFlags)
{
NS_ENSURE_ARG_POINTER (aProtocolFlags);
*aProtocolFlags = nsIProtocolHandler::URI_NORELATIVE | nsIProtocolHandler::URI_NOAUTH;
return NS_OK;
}
/* nsIURI newURI (in string aSpec, in nsIURI aBaseURI); */
NS_IMETHODIMP
EphyProtocolHandler::NewURI(const nsACString &aSpec,
const char *aOriginCharset,
nsIURI *aBaseURI,
nsIURI **_retval)
{
nsresult rv;
nsCOMPtr<nsIURI> uri (do_CreateInstance(kSimpleURICID, &rv));
NS_ENSURE_SUCCESS (rv, rv);
rv = uri->SetSpec (aSpec);
NS_ENSURE_SUCCESS (rv, rv);
NS_ADDREF(*_retval = uri);
return NS_OK;
}
/* nsIChannel newChannel (in nsIURI aURI); */
NS_IMETHODIMP
EphyProtocolHandler::NewChannel(nsIURI *aURI,
nsIChannel **_retval)
{
NS_ENSURE_ARG(aURI);
PRBool isEpiphany = PR_FALSE;
if (NS_SUCCEEDED (aURI->SchemeIs ("epiphany", &isEpiphany)) && isEpiphany)
{
return HandleEpiphany (aURI, _retval);
}
PRBool isAbout = PR_FALSE;
if (NS_SUCCEEDED (aURI->SchemeIs ("about", &isAbout)) && isAbout)
{
return Redirect (nsDependentCString ("file://" SHARE_DIR "/epiphany.xhtml"), _retval);
}
return NS_ERROR_ILLEGAL_VALUE;
}
/* boolean allowPort (in long port, in string scheme); */
NS_IMETHODIMP
EphyProtocolHandler::AllowPort(PRInt32 port,
const char *scheme,
PRBool *_retval)
{
*_retval = PR_FALSE;
return NS_OK;
}
/* private functions */
nsresult
EphyProtocolHandler::Redirect(const nsACString &aURL,
nsIChannel **_retval)
{
nsresult rv;
nsCOMPtr<nsIIOService> ioService;
rv = EphyUtils::GetIOService (getter_AddRefs (ioService));
NS_ENSURE_SUCCESS (rv, rv);
nsCOMPtr<nsIChannel> tempChannel;
rv = ioService->NewChannel(aURL, nsnull, nsnull, getter_AddRefs(tempChannel));
NS_ENSURE_SUCCESS (rv, rv);
nsCOMPtr<nsIURI> uri;
rv = ioService->NewURI(aURL, nsnull, nsnull, getter_AddRefs(uri));
NS_ENSURE_SUCCESS (rv, rv);
tempChannel->SetOriginalURI (uri);
nsCOMPtr<nsIScriptSecurityManager> securityManager =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS (rv, rv);
nsCOMPtr<nsIPrincipal> principal;
rv = securityManager->GetCodebasePrincipal(uri, getter_AddRefs(principal));
NS_ENSURE_SUCCESS (rv, rv);
rv = tempChannel->SetOwner(principal);
NS_ENSURE_SUCCESS (rv, rv);
NS_ADDREF(*_retval = tempChannel);
return rv;
}
nsresult
EphyProtocolHandler::ParseErrorURL(const char *aURL,
nsACString &aError,
nsACString &aRawOriginURL,
nsACString &aOriginURL,
nsACString &aOriginCharset)
{
/* The error page URL is of the form "epiphany:error?e=<error>&u=<URL>&c=<charset>&d=<description>" */
const char *query = strstr (aURL, "?");
if (!query) return NS_ERROR_FAILURE;
/* skip the '?' */
++query;
char **params = g_strsplit (query, "&", -1);
if (!params) return NS_ERROR_FAILURE;
for (PRUint32 i = 0; params[i] != NULL; ++i)
{
char *param = params[i];
if (strlen (param) <= 2) continue;
switch (param[0])
{
case 'e':
aError.Assign (nsUnescape (param + 2));
break;
case 'u':
aRawOriginURL.Assign (param + 2);
aOriginURL.Assign (nsUnescape (param + 2));
break;
case 'c':
aOriginCharset.Assign (nsUnescape (param + 2));
break;
case 'd':
/* we don't need mozilla's description parameter */
default:
break;
}
}
g_strfreev (params);
return NS_OK;
}
nsresult
EphyProtocolHandler::GetErrorMessage(nsIURI *aURI,
const char *aError,
char **aPrimary,
char **aSecondary,
char **aTertiary,
char **aLinkIntro)
{
if (strcmp (aError, "protocolNotFound") == 0)
{
nsCAutoString scheme;
aURI->GetScheme (scheme);
*aPrimary = g_strdup_printf (_("“%s” protocol is not supported."), scheme.get());
/* FIXME: get the list of supported protocols from necko */
*aSecondary = _("Supported protocols are “http”, “https”, “ftp”, “file” “smb” "
"and “sftp”.");
}
else if (strcmp (aError, "fileNotFound") == 0)
{
nsCAutoString path;
aURI->GetPath (path);
*aPrimary = g_markup_printf_escaped (_("File “%s” not found."), path.get());
*aSecondary = _("Check the location of the file and try again.");
}
else if (strcmp (aError, "dnsNotFound") == 0)
{
nsCAutoString host;
aURI->GetHost (host);
*aPrimary = g_markup_printf_escaped (_("“%s” could not be found."),
host.get());
*aSecondary = _("Check that you are connected to the internet, and "
"that the address is correct.");
*aLinkIntro = _("If this page used to exist, you may find an archived version:");
}
else if (strcmp (aError, "connectionFailure") == 0)
{
nsCAutoString host;
aURI->GetHost (host);
*aPrimary = g_markup_printf_escaped
(_("“%s” refused the connection."),
host.get());
*aSecondary = _("The server may be busy or you may have a "
"network connection problem. Try again later.");
*aLinkIntro = _("There may be an old version of the page you wanted:");
}
else if (strcmp (aError, "netInterrupt") == 0)
{
nsCAutoString host;
aURI->GetHost (host);
*aPrimary = g_markup_printf_escaped
(_("“%s” interrupted the connection."),
host.get());
*aSecondary = _("The server may be busy or you may have a "
"network connection problem. Try again later.");
*aLinkIntro = _("There may be an old version of the page you wanted:");
}
else if (strcmp (aError, "netTimeout") == 0)
{
nsCAutoString host;
aURI->GetHost (host);
*aPrimary = g_markup_printf_escaped
(_("“%s” is not responding."),
host.get());
*aSecondary = _("The connection was lost because the "
"server took too long to respond.");
*aTertiary = _("The server may be busy or you may have a network"
"connection problem. Try again later.");
*aLinkIntro = _("There may be an old version of the page you wanted:");
}
else if (strcmp (aError, "malformedURI") == 0)
{
*aPrimary = g_strdup (_("Invalid address."));
*aSecondary = g_strdup (_("The address you entered is not valid."));
}
else if (strcmp (aError, "redirectLoop") == 0)
{
nsCAutoString host;
aURI->GetHost (host);
*aPrimary = g_markup_printf_escaped
(_("“%s” redirected too many times."),
host.get());
*aSecondary = _("The redirection has been stopped for security reasons.");
*aLinkIntro = _("There may be an old version of the page you wanted:");
}
else if (strcmp (aError, "unknownSocketType") == 0)
{
nsCAutoString host;
aURI->GetHost (host);
*aPrimary = g_markup_printf_escaped
(_("“%s” requires an encrypted connection."),
host.get());
*aSecondary = _("The document could not be loaded because "
"encryption support is not installed.");
*aLinkIntro = _("There may be an old version of the page you wanted:");
}
else if (strcmp (aError, "netReset") == 0)
{
nsCAutoString host;
aURI->GetHost (host);
*aPrimary = g_markup_printf_escaped
(_("“%s” dropped the connection."),
host.get());
*aSecondary = _("The server dropped the connection "
"before any data could be read.");
*aTertiary = _("The server may be busy or you may have a "
"network connection problem. Try again later.");
*aLinkIntro = _("There may be an old version of the page you wanted:");
}
else if (strcmp (aError, "netOffline") == 0)
{
*aPrimary = g_strdup (_("Cannot load document in offline mode."));
*aSecondary = _("This document cannot be viewed in offline "
"mode. Set Epiphany to “online” "
"and try again.");
}
else if (strcmp (aError, "deniedPortAccess") == 0)
{
nsCAutoString host;
aURI->GetHost (host);
PRInt32 port = -1;
aURI->GetPort (&port);
*aPrimary = g_markup_printf_escaped
(_("“%s” denied access to port “%d”."),
host.get(), port > 0 ? port : 80);
*aSecondary = g_strdup (_("The server dropped the connection "
"before any data could be read."));
*aTertiary = _("The server may be busy or you may have a "
"network connection problem. Try again later.");
*aLinkIntro = _("There may be an old version of the page you wanted:");
}
else if (strcmp (aError, "proxyResolveFailure") == 0 ||
strcmp (aError, "proxyConnectFailure") == 0)
{
*aPrimary = g_strdup (_("Could not connect to proxy server."));
*aSecondary = _("Check you system wide proxy server settings. "
"If the connection still fails, there may be "
"a problem with your proxy server or your "
"network connection.");
}
else
{
return NS_ERROR_ILLEGAL_VALUE;
}
return NS_OK;
}
nsresult
EphyProtocolHandler::HandleEpiphany(nsIURI *aErrorURI,
nsIChannel **_retval)
{
NS_ENSURE_ARG (aErrorURI);
nsCAutoString spec;
aErrorURI->GetSpec (spec);
if (g_str_has_prefix (spec.get(), "epiphany:error?"))
{
return CreateErrorPage (aErrorURI, _retval);
}
return NS_ERROR_ILLEGAL_VALUE;
}
nsresult
EphyProtocolHandler::CreateErrorPage(nsIURI *aErrorURI,
nsIChannel **_retval)
{
/* First parse the arguments */
nsresult rv = NS_ERROR_ILLEGAL_VALUE;
nsCAutoString spec;
rv = aErrorURI->GetSpec (spec);
NS_ENSURE_TRUE (NS_SUCCEEDED (rv) && !spec.IsEmpty(), rv);
nsCAutoString error, rawurl, url, charset;
rv = ParseErrorURL (spec.get (), error, rawurl, url, charset);
if (NS_FAILED (rv) || error.IsEmpty () || url.IsEmpty()) return rv;
nsCOMPtr<nsIURI> uri;
rv = EphyUtils::NewURI(getter_AddRefs (uri), url, charset.get());
/* FIXME can uri be NULL if the original url was invalid? */
NS_ENSURE_TRUE (NS_SUCCEEDED (rv) && uri, rv);
char *primary = nsnull, *secondary = nsnull, *tertiary = nsnull, *linkintro = nsnull;
rv = GetErrorMessage (uri, error.get(), &primary, &secondary, &tertiary, &linkintro);
/* we don't know about this error code; forward to mozilla's impl */
if (rv == NS_ERROR_ILLEGAL_VALUE)
{
nsCAutoString url(spec);
/* remove "epiphany:error" part and insert mozilla's error page url */
url.Cut(0, strlen ("epiphany:error"));
url.Insert("chrome://global/content/netError.xhtml", 0);
return Redirect (url, _retval);
}
NS_ENSURE_TRUE (primary && secondary, NS_ERROR_FAILURE);
/* open the rendering stream */
nsCOMPtr<nsIStorageStream> storageStream;
rv = NS_NewStorageStream(16384, (PRUint32) -1, getter_AddRefs (storageStream));
NS_ENSURE_SUCCESS (rv, rv);
nsCOMPtr<nsIOutputStream> stream;
rv = storageStream->GetOutputStream(0, getter_AddRefs (stream));
NS_ENSURE_SUCCESS (rv, rv);
char *language = g_strdup (pango_language_to_string (gtk_get_default_language ()));
g_strdelimit (language, "_-@", '\0');
Write (stream,
"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" "
"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n"
"<html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"");
Write (stream, language);
Write (stream,
"\" xml:lang=\"");
Write (stream, language);
Write (stream,
"\">\n"
"<head>\n"
"<title>");
Write (stream, primary);
/* no favicon for now, it would pollute the favicon cache */
/* "<link rel=\"icon\" type=\"image/png\" href=\"moz-icon://stock/gtk-dialog-error?size=16\" />\n" */
Write (stream,
"</title>\n"
"<style type=\"text/css\">\n"
"div#body {\n"
"top: 12px;\n"
"right: 12px;\n"
"bottom: 12px;\n"
"left: 12px;\n"
"overflow: auto;\n"
"background: -moz-dialog url('moz-icon://stock/gtk-dialog-error?size=dialog') no-repeat 12px 12px;\n"
"color: -moz-dialogtext;\n"
"font: message-box;\n"
"border: 1px solid -moz-dialogtext;\n"
"padding: 12px 12px 12px 72px;\n"
"}\n"
"h1 {\n"
"margin: 0;\n"
"font-size: 1.2em;\n"
"}\n"
"</style>\n"
"</head>\n"
"<body dir=\"");
Write (stream,
gtk_widget_get_default_direction () == GTK_TEXT_DIR_RTL ? "rtl" : "ltr");
Write (stream,
"\">\n"
"<div id=\"body\">"
"<h1>");
Write (stream, primary);
Write (stream,
"</h1>\n"
"<p>");
Write (stream, secondary);
if (tertiary)
{
Write (stream, " ");
Write (stream, tertiary);
}
Write (stream,
"</p>\n");
PRBool isHttp = PR_FALSE, isHttps = PR_FALSE;
uri->SchemeIs ("http", &isHttp);
uri->SchemeIs ("https", &isHttps);
if (linkintro && (isHttp || isHttps))
{
Write (stream, "<p>");
Write (stream, linkintro);
Write (stream, "<ul>\n");
Write (stream, "<li><a href=\"http://google.com/search?q=cache:");
Write (stream, rawurl.get());
Write (stream, "\">");
/* Translators: The text before the "|" is context to help you decide on
* the correct translation. You MUST OMIT it in the translated string. */
Write (stream, Q_("You may find an old version:|in the Google Cache"));
Write (stream, "</a></li>\n");
Write (stream, "<li><a href=\"http://web.archive.org/web/*/");
Write (stream, rawurl.get());
Write (stream, "\">");
/* Translators: The text before the "|" is context to help you decide on
* the correct translation. You MUST OMIT it in the translated string. */
Write (stream, Q_("You may find an old version:|in the Internet Archive"));
Write (stream, "</a></li>\n"
"</ul>\n"
"</p>");
}
Write (stream,
"</div>\n"
"</body>\n"
"</html>\n");
g_free (language);
g_free (primary);
/* finish the rendering */
nsCOMPtr<nsIInputStream> inputStream;
rv = storageStream->NewInputStream(0, getter_AddRefs (inputStream));
NS_ENSURE_SUCCESS (rv, rv);
nsCOMPtr<nsIInputStreamChannel> channel (do_CreateInstance (kInputStreamChannelCID, &rv));
NS_ENSURE_SUCCESS (rv, rv);
rv |= channel->SetURI (aErrorURI);
rv |= channel->SetContentStream (inputStream);
rv |= channel->SetContentType (NS_LITERAL_CSTRING ("application/xhtml+xml"));
rv |= channel->SetContentCharset (NS_LITERAL_CSTRING ("utf-8"));
NS_ENSURE_SUCCESS (rv, rv);
nsCOMPtr<nsIScriptSecurityManager> securityManager
(do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv));
NS_ENSURE_SUCCESS (rv, rv);
nsCOMPtr<nsIPrincipal> principal;
rv = securityManager->GetCodebasePrincipal (aErrorURI, getter_AddRefs (principal));
NS_ENSURE_SUCCESS (rv, rv);
rv = channel->SetOwner(principal);
NS_ENSURE_SUCCESS (rv, rv);
NS_ADDREF(*_retval = channel);
return rv;
}
nsresult
EphyProtocolHandler::Write(nsIOutputStream *aStream,
const char *aText)
{
PRUint32 bytesWritten;
return aStream->Write (aText, strlen (aText), &bytesWritten);
}
nsresult
EphyProtocolHandler::WriteHTMLEscape(nsIOutputStream *aStream,
const char *aText)
{
char *text = g_markup_escape_text (aText, strlen (aText));
nsresult rv = Write (aStream, text);
g_free (text);
return rv;
}
