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path: root/executive-summary/component/e-summary-url.c
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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-summary-url.c
 *
 * Authors: Iain Holmes <iain@helixcode.com>
 *
 * Copyright (C) 2000  Helix Code, Inc.
 *
 * 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 of the
 * License, 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.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <gnome.h>
#include <bonobo.h>

#include <gtkhtml/gtkhtml.h>
#include <gtkhtml/gtkhtml-stream.h>
#include <gal/util/e-util.h>

#include <liboaf/liboaf.h>

#include <libgnomevfs/gnome-vfs.h>
#include "e-summary.h"
#include "e-summary-url.h"
#include "e-summary-util.h"

#include "Composer.h"

typedef enum _ESummaryProtocol {
    PROTOCOL_NONE,
    PROTOCOL_HTTP,
    PROTOCOL_MAILTO,
    PROTOCOL_VIEW,
    PROTOCOL_EXEC,
    PROTOCOL_FILE,
    PROTOCOL_CLOSE,
    PROTOCOL_LEFT,
    PROTOCOL_RIGHT,
    PROTOCOL_UP,
    PROTOCOL_DOWN,
    PROTOCOL_CONFIGURE,
    PROTOCOL_OTHER
} ESummaryProtocol;

static char *descriptions[] = {
    N_("Open %s with the default GNOME application"),
    N_("Open %s with the default GNOME web browser"),
    N_("Send an email to %s"),
    N_("Change the view to %s"),
    N_("Run %s"),
    N_("Open %s with the default GNOME application"),
    N_("Close %s"),
    N_("Move %s to the left"),
    N_("Move %s to the right"),
    N_("Move %s into the previous row"),
    N_("Move %s into the next row"),
    N_("Configure %s"),
    N_("Open %s with the default GNOME application")
};

typedef struct _PropertyDialog {
    BonoboListener *listener;
    int listener_id;

    Bonobo_EventSource eventsource;
    GtkWidget *dialog;
} PropertyDialog;
#define COMPOSER_IID "OAFIID:GNOME_Evolution_Mail_Composer"

#if HAVECACHE
static ESummaryCache *image_cache = NULL;
#endif

gboolean e_summary_url_mail_compose (ESummary *esummary,
                     const char *url);
gboolean e_summary_url_exec (const char *exec);

struct _DownloadInfo {
    GtkHTMLStream *stream;
    char *uri;
    char *buffer;

    gboolean error;
};
typedef struct _DownloadInfo DownloadInfo;

static void
close_callback (GnomeVFSAsyncHandle *handle,
        GnomeVFSResult result,
        DownloadInfo *info)
{
    if (info->error) {
        gtk_html_stream_close (info->stream, GTK_HTML_STREAM_ERROR);
    } else {
        gtk_html_stream_close (info->stream, GTK_HTML_STREAM_OK);
    }

    g_free (info->uri);
    g_free (info->buffer);
    g_free (info);
}

static void
read_callback (GnomeVFSAsyncHandle *handle,
           GnomeVFSResult result,
           gpointer buffer,
           GnomeVFSFileSize bytes_requested,
           GnomeVFSFileSize bytes_read,
           DownloadInfo *info)
{
    if (result != GNOME_VFS_OK && result != GNOME_VFS_ERROR_EOF) {
        g_warning ("Read error");
        info->error = TRUE;
        gnome_vfs_async_close (handle, close_callback, info);
    }
    
    if (bytes_read == 0) {
        info->error = FALSE;
        gnome_vfs_async_close (handle, close_callback, info);
    } else {
        gtk_html_stream_write (info->stream, buffer, bytes_read);
        gnome_vfs_async_read (handle, buffer, 4095, read_callback,
                      info);
    }
}

static void
open_callback (GnomeVFSAsyncHandle *handle,
           GnomeVFSResult result,
           DownloadInfo *info)
{
    if (result != GNOME_VFS_OK) {
        gtk_html_stream_close (info->stream, GTK_HTML_STREAM_ERROR);
        g_free (info->uri);
        g_free (info);
        return;
    } 

    info->buffer = g_new (char, 4096);
    gnome_vfs_async_read (handle, info->buffer, 4095, read_callback, info);
}

void
e_summary_url_request (GtkHTML *html,
               const gchar *url,
               GtkHTMLStream *stream)
{
    char *filename;
    GnomeVFSAsyncHandle *handle;
    DownloadInfo *info;

    g_print ("url: %s\n", url);
    if (strncasecmp (url, "file:", 5) == 0) {
        url += 5;
        filename = e_pixmap_file (url);
    } else if (strchr (url, ':') >= strchr (url, '/')) {
        filename = e_pixmap_file (url);
    } else
        filename = g_strdup (url);

    if (filename == NULL) {
        gtk_html_stream_close (stream, GTK_HTML_STREAM_ERROR);
        return;
    }

    g_print ("Filename: %s\n", filename);

    info = g_new (DownloadInfo, 1);
    info->stream = stream;
    info->uri = filename;
    info->error = FALSE;

    gnome_vfs_async_open (&handle, filename, GNOME_VFS_OPEN_READ,
                  (GnomeVFSAsyncOpenCallback) open_callback, info);
}

static char *
parse_uri (const char *uri,
       ESummaryProtocol protocol,
       ESummary *esummary)
{
    char *parsed;
    char *p;
    int address;
    ESummaryWindow *window;

    switch (protocol) {
        
    case PROTOCOL_HTTP:
        /* "http://" == 7 */
        parsed = g_strdup (uri + 7);
        break;

    case PROTOCOL_EXEC:
        /* "exec://" == 7 */
        parsed = g_strdup (uri + 7);
        break;

    case PROTOCOL_VIEW:
        /* "view://" == 7 */
        parsed = g_strdup (uri + 7);
        break;

    case PROTOCOL_MAILTO:
        /* Fun. Mailto's might be "mailto:" or "mailto://" */
        if (strstr (uri, "mailto://") == NULL) {
            parsed = (char *) (uri + 7);
        } else {
            parsed = (char *) (uri + 9);
        }

        /* Now strip anything after a question mark, 
           as it is a parameter (that we ignore for the time being) */
        if ( (p = strchr (parsed, '?')) != NULL) {
            parsed = g_strndup (parsed, p - parsed);
        } else {
            parsed = g_strdup (parsed);
        }

        break;

    case PROTOCOL_CLOSE:
        address = atoi (uri + 8);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        parsed = g_strdup (window->title);
        break;

    case PROTOCOL_LEFT:
        address = atoi (uri + 7);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        parsed = g_strdup (window->title);
        break;

    case PROTOCOL_RIGHT:
        address = atoi (uri + 8);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        parsed = g_strdup (window->title);
        break;

    case PROTOCOL_UP:
        address = atoi (uri + 5);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        parsed = g_strdup (window->title);
        break;

    case PROTOCOL_DOWN:
        address = atoi (uri + 7);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        parsed = g_strdup (window->title);
        break;

    case PROTOCOL_CONFIGURE:
        address = atoi (uri + 12);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        parsed = g_strdup (window->title);
        break;

    case PROTOCOL_NONE:
    case PROTOCOL_OTHER:
    default:
        /* Just return the uneditted uri. */
        parsed = g_strdup (uri);
        break;
    }

    return parsed;
}

static ESummaryProtocol
get_protocol (const char *url)
{
    char *lowerurl;
    ESummaryProtocol protocol = PROTOCOL_OTHER;
    
    lowerurl = g_strdup (url);
    g_strdown (lowerurl);
    
    /* Check for no :/ */
    if (strstr (lowerurl, "://") == NULL) {
        
        /* Annoying alternative for mailto URLs */
        if (strncmp (lowerurl, "mailto:", 6) != 0) {
            g_free (lowerurl);
            return PROTOCOL_NONE;
        } else {
            g_free (lowerurl);
            return PROTOCOL_MAILTO;
        }
    }
    
    switch (lowerurl[0]) {
    case 'c':
        switch (lowerurl[1]) {
        case 'l':
            if (strncmp (lowerurl + 2, "ose", 3) == 0)
                protocol = PROTOCOL_CLOSE;
            break;
        case 'o':
            if (strncmp (lowerurl + 2, "nfigure", 7) == 0)
                protocol = PROTOCOL_CONFIGURE;
            break;
        }

    case 'd':
        if (strncmp (lowerurl + 1, "own", 3) == 0)
            protocol = PROTOCOL_DOWN;
        break;

    case 'e':
        if (strncmp (lowerurl + 1, "xec", 3) == 0)
            protocol = PROTOCOL_EXEC;
        break;
        
    case 'f':
        if (strncmp (lowerurl + 1, "ile", 3) == 0)
            protocol = PROTOCOL_FILE;
        break;

    case 'h':
        if (strncmp (lowerurl + 1, "ttp", 3) == 0)
            protocol = PROTOCOL_HTTP;
        break;
        
    case 'l':
        if (strncmp (lowerurl + 1, "eft", 3) == 0)
            protocol = PROTOCOL_LEFT;
        break;

    case 'm':
        if (strncmp (lowerurl + 1, "ailto", 5) == 0)
            protocol = PROTOCOL_MAILTO;
        break;
        
    case 'r':
        if (strncmp (lowerurl + 1, "ight", 4) == 0)
            protocol = PROTOCOL_RIGHT;
        break;

    case 'u':
        if (lowerurl[1] == 'p')
            protocol = PROTOCOL_UP;
        break;
        
    case 'v':
        if (strncmp (lowerurl + 1, "iew", 3) == 0)
            protocol = PROTOCOL_VIEW;
        break;
        
    default:
        break;
    }
    
    g_free (lowerurl);
    
    return protocol;
}

static void
property_apply (GnomePropertyBox *propertybox,
        gint page_num,
        Bonobo_PropertyControl control)
{
    CORBA_Environment ev;

    g_print ("page_num: %d\n", page_num);

    CORBA_exception_init (&ev);
    Bonobo_PropertyControl_notifyAction (control, page_num, Bonobo_PropertyControl_APPLY, &ev);
    CORBA_exception_free (&ev);
}

static void
property_help (GnomePropertyBox *propertybox,
           gint page_num,
           Bonobo_PropertyControl control)
{
    CORBA_Environment ev;

    CORBA_exception_init (&ev);
    Bonobo_PropertyControl_notifyAction (control, page_num, Bonobo_PropertyControl_HELP, &ev);
    CORBA_exception_free (&ev);
}

static void
property_event (BonoboListener *listener,
        char *event_name,
        CORBA_any *any,
        CORBA_Environment *ev,
        gpointer user_data)
{
    PropertyDialog *data = (PropertyDialog *) user_data;
    if (strcmp (event_name, BONOBO_PROPERTY_CONTROL_CHANGED) == 0) {
        gnome_property_box_changed (GNOME_PROPERTY_BOX (data->dialog));
        return;
    }
}

static void
dialog_destroyed (GtkObject *object,
          PropertyDialog *dialog)
{
    CORBA_Environment ev;

    CORBA_exception_init (&ev);
    Bonobo_EventSource_removeListener (dialog->eventsource,
                       dialog->listener_id, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_warning ("Error: %s", CORBA_exception_id (&ev));
    }

    bonobo_object_unref (BONOBO_OBJECT (dialog->listener));
    CORBA_exception_free (&ev);
    g_free (dialog);
}

void
e_summary_url_click (GtkWidget *widget,
             const char *url,
             ESummary *esummary)
{
    ESummaryProtocol protocol;
    char *parsed;
    int address;
    ESummaryWindow *window;
    Bonobo_Control control;
    Bonobo_Listener corba_listener;
    GtkWidget *prefsbox, *control_widget;
    CORBA_Environment ev;
    PropertyDialog *data;
    int num_pages, i;

    protocol = get_protocol (url);

    parsed = parse_uri (url, protocol, esummary);

    switch (protocol) {
    case PROTOCOL_MAILTO:
        /* Open a composer window */
        e_summary_url_mail_compose (esummary, parsed);
        break;
        
    case PROTOCOL_VIEW:
        /* Change the EShellView's current uri */
        e_summary_change_current_view (esummary, parsed);
        break;
        
    case PROTOCOL_EXEC:
        /* Execute the rest of the url */
        e_summary_url_exec (parsed);
        break;

    case PROTOCOL_CLOSE:
        /* Close the window. */
        address = atoi (url + 8);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        if (window->iid == NULL)
            break;

        e_summary_remove_window (esummary, window);
        e_summary_queue_rebuild (esummary);
        break;

    case PROTOCOL_CONFIGURE:
        /* Configure the window. . . */
        address = atoi (url + 12);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        if (window->iid == NULL)
            break;
    
        data = g_new (PropertyDialog, 1);
        /* Create the property box */
        prefsbox = gnome_property_box_new ();
        data->dialog = prefsbox;

        CORBA_exception_init (&ev);
        data->eventsource = window->event_source;
        data->listener = bonobo_listener_new (property_event, data);
        corba_listener = bonobo_object_corba_objref (BONOBO_OBJECT (data->listener));
        data->listener_id = Bonobo_EventSource_addListener (data->eventsource,
                                    corba_listener, &ev);

        gtk_signal_connect (GTK_OBJECT (prefsbox), "apply",
                    GTK_SIGNAL_FUNC (property_apply), 
                    window->propertycontrol);
        gtk_signal_connect (GTK_OBJECT (prefsbox), "help",
                    GTK_SIGNAL_FUNC (property_help),
                    window->propertycontrol);
        gtk_signal_connect (GTK_OBJECT (prefsbox), "destroy",
                    GTK_SIGNAL_FUNC (dialog_destroyed), data);

        num_pages = Bonobo_PropertyControl__get_pageCount (window->propertycontrol, &ev);
        for (i = 0; i < num_pages; i++) {
            control = Bonobo_PropertyControl_getControl (window->propertycontrol, i, &ev);
            if (ev._major != CORBA_NO_EXCEPTION) {
                g_warning ("Unable to get property control.");
                CORBA_exception_free (&ev);
                break;
            }
            control_widget = bonobo_widget_new_control_from_objref (control,
                                        CORBA_OBJECT_NIL);
            gnome_property_box_append_page (GNOME_PROPERTY_BOX (prefsbox),
                            control_widget,
                            gtk_label_new ("page"));
        }

        gtk_widget_show_all (prefsbox);

        break;

    case PROTOCOL_LEFT:
        /* Window left */
        address = atoi (url + 7);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        if (window->iid == NULL)
            break;

        e_summary_window_move_left (esummary, window);
        e_summary_queue_rebuild (esummary);
        break;

    case PROTOCOL_RIGHT:
        address = atoi (url + 8);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        if (window->iid == NULL)
            break;

        e_summary_window_move_right (esummary, window);
        e_summary_queue_rebuild (esummary);
        break;

    case PROTOCOL_UP:
        address = atoi (url + 5);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        if (window->iid == NULL)
            break;

        e_summary_window_move_up (esummary, window);
        e_summary_queue_rebuild (esummary);
        break;

    case PROTOCOL_DOWN:
        address = atoi (url + 7);
        window = (ESummaryWindow *) GINT_TO_POINTER (address);
        if (window->iid == NULL)
            break;

        e_summary_window_move_down (esummary, window);
        e_summary_queue_rebuild (esummary);
        break;

    case PROTOCOL_NONE:
    case PROTOCOL_OTHER:
    case PROTOCOL_HTTP:
    case PROTOCOL_FILE:
    default:
        /* Let browser handle it */
        gnome_url_show (url);
        break;
        
    }      

    g_free (parsed);
}

static void
parse_mail_url (char *url,
        GList **cc,
        GList **bcc,
        char **subject)
{
    char **options;
    int i = 0;

    options = g_strsplit (url, "&", 0);
    while (options[i] != NULL) {
        char **params;

        params = g_strsplit (options[i], "=", 2);
        if (strcmp (params[0], "subject") == 0) {
            *subject = g_strdup (params[1]);
        } else if (strcmp (params[0], "cc") == 0) {
            *cc = g_list_prepend (*cc, g_strdup (params[1]));
        } else if (strcmp (params[1], "bcc") == 0) {
            *bcc = g_list_prepend (*bcc, g_strdup (params[1]));
        }

        g_strfreev (params);
        i++;
    }
    
    g_strfreev (options);
    /* Reverse the list so it's in the correct order */
    *cc = g_list_reverse (*cc);
    *bcc = g_list_reverse (*bcc);
}

static void
recipients_from_list (GNOME_Evolution_Composer_RecipientList *recipients,
              GList *list)
{
    GList *t;
    int i;

    for (i = 0, t = list; t; i++, t = t->next) {
        GNOME_Evolution_Composer_Recipient *recipient;
        char *address = (char *)t->data;

        recipient = recipients->_buffer + i;
        recipient->name = CORBA_string_dup ("");
        recipient->address = CORBA_string_dup (address ? address : "");
    }
}

static void
free_list (GList *list)
{
    for (; list; list = list->next) {
        g_free (list->data);
    }
}

gboolean
e_summary_url_mail_compose (ESummary *esummary,
                const char *url)
{
    CORBA_Object composer;
    CORBA_Environment ev;
    char *full_address, *address, *proto, *q;
    GNOME_Evolution_Composer_RecipientList *to, *cc, *bcc;
    GNOME_Evolution_Composer_Recipient *recipient;
    CORBA_char *subject;
    GList *gcc = NULL, *gbcc = NULL;
    char *gsubject = NULL;
    
    CORBA_exception_init (&ev);
    
    /* FIXME: Query for IIDs? */
    composer = oaf_activate_from_id ((char *)COMPOSER_IID, 0, NULL, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        g_warning ("Unable to start composer component!");
        return FALSE;
    }

    if ( (proto = strstr (url, "://")) != NULL){
        full_address = proto + 3;
    } else {
        if (strncmp (url, "mailto:", 7) == 0)
            full_address = (char *) (url + 7);
        else
            full_address = (char *) url;
    }

    q = strchr (full_address, '?');
    if (q != NULL) {
        address = g_strndup (full_address, q - full_address);
        parse_mail_url (q + 1, &gcc, &gbcc, &gsubject);
    } else {
        address = g_strdup (full_address);
    }

    to = GNOME_Evolution_Composer_RecipientList__alloc ();
    to->_length = 1;
    to->_maximum = 1;
    to->_buffer = CORBA_sequence_GNOME_Evolution_Composer_Recipient_allocbuf (to->_maximum);
    
    recipient = to->_buffer;
    recipient->name = CORBA_string_dup ("");
    recipient->address = CORBA_string_dup (address?address:"");
    g_free (address);

    /* FIXME: Get these out of the URL */
    cc = GNOME_Evolution_Composer_RecipientList__alloc ();
    cc->_length = g_list_length (gcc);
    cc->_maximum = cc->_length;
    cc->_buffer = CORBA_sequence_GNOME_Evolution_Composer_Recipient_allocbuf (cc->_maximum);
    
    recipients_from_list (cc, gcc);
    free_list (gcc);
    g_list_free (gcc);

    bcc = GNOME_Evolution_Composer_RecipientList__alloc ();
    bcc->_length = g_list_length (gbcc);
    bcc->_maximum = bcc->_length;
    bcc->_buffer = CORBA_sequence_GNOME_Evolution_Composer_Recipient_allocbuf (bcc->_maximum);
    
    recipients_from_list (bcc, gbcc);
    free_list (gbcc);
    g_list_free (gbcc);

    subject = CORBA_string_dup (gsubject ? gsubject : "");
    g_free (gsubject);

    CORBA_exception_init (&ev);
    GNOME_Evolution_Composer_setHeaders (composer, to, cc, bcc, subject, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        CORBA_free (to);
        CORBA_free (cc);
        CORBA_free (bcc);
        CORBA_free (subject);

        g_warning ("%s(%d): Error setting headers", __FUNCTION__, __LINE__);
        return FALSE;
    }
    
    CORBA_free (to);
    CORBA_free (cc);
    CORBA_free (bcc);
    CORBA_free (subject);

    CORBA_exception_init (&ev);  
    GNOME_Evolution_Composer_show (composer, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        g_warning ("%s(%d): Error showing composer", __FUNCTION__, __LINE__);
        return FALSE;
    }
    
    CORBA_exception_free (&ev);
    
    /* FIXME: Free the composer? */
    
    return TRUE;
}

gboolean
e_summary_url_exec (const char *exec)
{
    gchar **exec_array;
    int argc;
    
    exec_array = g_strsplit (exec, " ", 0);
    
    argc = 0;
    while (exec_array[argc] != NULL) {
        argc++;
    }
    
    gnome_execute_async (NULL, argc, exec_array);
    
    g_strfreev (exec_array);
    return TRUE;
}

static char *
e_summary_url_describe (const char *uri, 
            ESummary *esummary)
{
    ESummaryProtocol protocol;
    char *contents, *description;

    protocol = get_protocol (uri);
    contents = parse_uri (uri, protocol, esummary);

    description = g_strdup_printf (_(descriptions[protocol]), contents);
    g_free (contents);

    return description;
}

void
e_summary_url_over (GtkHTML *html,
            const char *uri,
            ESummary *esummary)
{
    char *description;

    if (uri != NULL) {
        description = e_summary_url_describe (uri, esummary);
        e_summary_set_message (esummary, description, FALSE);
        g_free (description);
    } else {
        e_summary_unset_message (esummary);
    }
}

/* Cache stuff */
#if HAVECACHE
void
e_summary_url_init_cache (void)
{
    if (image_cache != NULL)
        return;

    image_cache = e_summary_cache_new ();
}

void
e_summary_url_cache_destroy (void)
{
    if (image_cache == NULL)
        return;

    gtk_object_unref (GTK_OBJECT (image_cache));

    image_cache = NULL;
}
#endif