path: root/embed/mozilla/mozilla-embed-persist.cpp

/*
 *  Copyright (C) 2000, 2001, 2002 Marco Pesenti Gritti
 *
 *  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.
 *
 *  $Id$
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "mozilla-embed-persist.h"
#include "mozilla-embed.h"
#include "ephy-embed-shell.h"
#include "EphyBrowser.h"
#include "EphyHeaderSniffer.h"
#include "MozDownload.h"

#include <stddef.h>
#include <nsIWebBrowserPersist.h>
#include <nsString.h>
#include <nsCWebBrowserPersist.h>
#include <nsNetUtil.h>
#include <nsIHistoryEntry.h>
#include <nsISHEntry.h>
#include <nsIDocumentEncoder.h>

static void
mozilla_embed_persist_class_init (MozillaEmbedPersistClass *klass);
static void
mozilla_embed_persist_init (MozillaEmbedPersist *ges);
static void
mozilla_embed_persist_finalize (GObject *object);

#define MOZILLA_EMBED_PERSIST_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), MOZILLA_TYPE_EMBED_PERSIST, MozillaEmbedPersistPrivate))

struct MozillaEmbedPersistPrivate
{
    nsCOMPtr<nsIWebBrowserPersist> mPersist;
};

static GObjectClass *parent_class = NULL;

GType
mozilla_embed_persist_get_type (void)
{
       static GType mozilla_embed_persist_type = 0;

        if (mozilla_embed_persist_type == 0)
        {
                static const GTypeInfo our_info =
                {
                        sizeof (MozillaEmbedPersistClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) mozilla_embed_persist_class_init,
                        NULL, /* class_finalize */
                        NULL, /* class_data */
                        sizeof (MozillaEmbedPersist),
                        0,    /* n_preallocs */
                        (GInstanceInitFunc) mozilla_embed_persist_init
                };

                mozilla_embed_persist_type = 
                g_type_register_static (EPHY_TYPE_EMBED_PERSIST,
                                                        "MozillaEmbedPersist",
                                                        &our_info, (GTypeFlags)0);
        }

        return mozilla_embed_persist_type;
}

static void
mozilla_embed_persist_init (MozillaEmbedPersist *persist)
{
        persist->priv = MOZILLA_EMBED_PERSIST_GET_PRIVATE (persist);
        persist->priv->mPersist = do_CreateInstance (NS_WEBBROWSERPERSIST_CONTRACTID);
}

static void
mozilla_embed_persist_finalize (GObject *object)
{
        MozillaEmbedPersist *persist = MOZILLA_EMBED_PERSIST (object);

    persist->priv->mPersist = nsnull;

        G_OBJECT_CLASS (parent_class)->finalize (object);
}

void
mozilla_embed_persist_completed (MozillaEmbedPersist *persist)
{
    g_signal_emit_by_name (persist, "completed");
    g_object_unref (persist);
}

void
mozilla_embed_persist_cancelled (MozillaEmbedPersist *persist)
{
    g_object_unref (persist);
}

static void
impl_cancel (EphyEmbedPersist *persist)
{
    nsCOMPtr<nsIWebBrowserPersist> bpersist =
        MOZILLA_EMBED_PERSIST (persist)->priv->mPersist;
    if (bpersist)
    {
        bpersist->CancelSave ();
    }

    g_object_unref (persist);
}

static gboolean
impl_save (EphyEmbedPersist *persist)
{
    nsresult rv;
    char *filename;
    char *uri;
    int max_size;
    EphyEmbed *embed;
    EmbedPersistFlags flags;
    PRUint32 persistFlags = 0;

    /* FIXME implement max size */

    g_object_ref (persist);
    
    g_object_get (persist,
              "source", &uri,        
              "dest", &filename,
              "flags", &flags,
              "embed", &embed,
              "max_size", &max_size,
              NULL);

    g_return_val_if_fail (!(flags & EMBED_PERSIST_COPY_PAGE)
                  || embed != NULL, FALSE); 

    EphyBrowser *browser = NULL;
    if (embed)
    {
        browser = (EphyBrowser *) _mozilla_embed_get_ephy_browser (MOZILLA_EMBED(embed));
        NS_ENSURE_TRUE (browser, FALSE);
    }
    /* we must have one of uri or browser */
    g_assert (browser != NULL || uri != NULL);

    /* Get a temp filename to save to */
    nsCOMPtr<nsIProperties> dirService(do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID));
    NS_ENSURE_TRUE (dirService, FALSE);

    nsCOMPtr<nsIFile> tmpFile;
    dirService->Get("TmpD", NS_GET_IID(nsIFile), getter_AddRefs(tmpFile));
    if (!tmpFile) return FALSE;

    /* FIXME: make this filename non-guessable */
    static short unsigned int tmpRandom = 0;
    nsAutoString tmpNo;
    tmpNo.AppendInt(tmpRandom++);
    nsAutoString saveFile(NS_LITERAL_STRING("-sav"));
    saveFile += tmpNo;
    saveFile += NS_LITERAL_STRING("tmp");
    tmpFile->Append(saveFile);

    /* Get the uri to save to */
    nsCOMPtr<nsIURI> inURI;
    nsCAutoString sURI;
    if (uri)
    {
        sURI.Assign (uri);
    }
    else
    {
        rv = browser->GetDocumentUrl (sURI);
        NS_ENSURE_SUCCESS (rv, FALSE);
    }
        NS_NewURI(getter_AddRefs(inURI), sURI);
    if (!inURI) return FALSE;

    /* Get post data */
    nsCOMPtr<nsIInputStream> postData;
    if (browser)
    {
        PRInt32 sindex;

        nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(browser->mWebBrowser));
        nsCOMPtr<nsISHistory> sessionHistory;
        webNav->GetSessionHistory(getter_AddRefs(sessionHistory));
        nsCOMPtr<nsIHistoryEntry> entry;
        sessionHistory->GetIndex(&sindex);
        sessionHistory->GetEntryAtIndex(sindex, PR_FALSE, getter_AddRefs(entry));
        nsCOMPtr<nsISHEntry> shEntry(do_QueryInterface(entry));
        if (shEntry)
        {
            shEntry->GetPostData(getter_AddRefs(postData));
        }
    }

    /* Get the DOM document if a uri is not specified */
    nsCOMPtr<nsIDOMDocument> DOMDocument;
    if (!uri)
    {       
        if (flags & EMBED_PERSIST_MAINDOC)
        {
                    browser->GetDocument (getter_AddRefs(DOMDocument));
        }
            else
        {
                    browser->GetTargetDocument (getter_AddRefs(DOMDocument));
        }
            NS_ENSURE_TRUE (DOMDocument, FALSE);
    }


    /* Get the current page descriptor */
    nsCOMPtr<nsISupports> pageDescriptor;
    if (flags & EMBED_PERSIST_COPY_PAGE)
    {
            browser->GetPageDescriptor(getter_AddRefs(pageDescriptor));
        NS_ENSURE_TRUE (pageDescriptor, FALSE);
    }

    if (filename == NULL)
    {
        /* Create an header sniffer and do the save */
        nsCOMPtr<nsIWebBrowserPersist> webPersist =
            MOZILLA_EMBED_PERSIST (persist)->priv->mPersist;
        NS_ENSURE_TRUE (webPersist, FALSE);

        EphyHeaderSniffer* sniffer = new EphyHeaderSniffer
            (webPersist, MOZILLA_EMBED_PERSIST (persist),
             tmpFile, inURI, DOMDocument, postData);
        if (!sniffer) return FALSE;
 
        webPersist->SetProgressListener(sniffer);
        rv = webPersist->SaveURI(inURI, nsnull, nsnull, nsnull, nsnull, tmpFile);
        if (NS_FAILED (rv)) return FALSE;
    }
    else
    {
        /* Filename to save to */
        nsCOMPtr<nsILocalFile> destFile;
        NS_NewNativeLocalFile (nsDependentCString(filename),
                       PR_TRUE, getter_AddRefs(destFile));
            NS_ENSURE_TRUE (destFile, FALSE);

        rv =  InitiateMozillaDownload (DOMDocument, inURI, destFile,
                           nsnull, inURI, MOZILLA_EMBED_PERSIST (persist),
                           postData, pageDescriptor);
        if (NS_FAILED (rv)) return FALSE;
    }

    g_free (uri);
    g_free (filename);

    return TRUE;
}

static char *
impl_to_string (EphyEmbedPersist *persist)
{
    EphyEmbed *embed;
    nsCOMPtr<nsIDOMDocument> DOMDocument;
    EmbedPersistFlags flags;
    EphyBrowser *browser;
    nsresult rv = NS_OK;

    g_object_ref (persist);
    
    g_object_get (persist,
                  "flags", &flags,
                  "embed", &embed,
                  NULL);
    g_object_unref (persist);
    g_assert (embed != NULL);

    browser = (EphyBrowser *) _mozilla_embed_get_ephy_browser (MOZILLA_EMBED(embed));
    g_assert (browser != NULL);

    if (flags & EMBED_PERSIST_MAINDOC)
    {
        rv = browser->GetDocument (getter_AddRefs(DOMDocument));
    }
        else
    {
        rv = browser->GetTargetDocument (getter_AddRefs(DOMDocument));
    }
    if (NS_FAILED(rv) || !DOMDocument) return NULL;

    nsCOMPtr<nsIDocument> doc = do_QueryInterface(DOMDocument);
    if(!doc) return NULL;

    nsCOMPtr<nsIDocumentEncoder> encoder = do_CreateInstance(NS_DOC_ENCODER_CONTRACTID_BASE "text/html");
    NS_ENSURE_SUCCESS(rv, NULL);

    rv = encoder->Init(doc, NS_LITERAL_STRING("text/html"), nsIDocumentEncoder::OutputAbsoluteLinks);
    NS_ENSURE_SUCCESS(rv, NULL);

    nsAutoString aOutputString;
    encoder->EncodeToString(aOutputString);

    return g_strdup (NS_ConvertUCS2toUTF8(aOutputString).get());
}


static GObject *
mozilla_embed_persist_constructor (GType type, guint n_construct_properties,
                       GObjectConstructParam *construct_params)
{
    /* we depend on single because of mozilla initialization */
    ephy_embed_shell_get_embed_single (embed_shell);

    return parent_class->constructor (type, n_construct_properties,
                      construct_params);
}

static void
mozilla_embed_persist_class_init (MozillaEmbedPersistClass *klass)
{
        GObjectClass *object_class = G_OBJECT_CLASS (klass);
    EphyEmbedPersistClass *persist_class = EPHY_EMBED_PERSIST_CLASS (klass);
    
        parent_class = (GObjectClass *) g_type_class_peek_parent (klass);
    
        object_class->finalize = mozilla_embed_persist_finalize;
    object_class->constructor = mozilla_embed_persist_constructor;

    persist_class->save = impl_save;
    persist_class->cancel = impl_cancel;
    persist_class->to_string = impl_to_string;

    g_type_class_add_private (object_class, sizeof(MozillaEmbedPersistPrivate));
}