path: root/mail/em-folder-utils.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

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

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

#include <libxml/tree.h>

#include <gtk/gtk.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <glib/gi18n.h>

#include <camel/camel-session.h>
#include <camel/camel-store.h>
#include <camel/camel-folder.h>
#include <camel/camel-vee-store.h>
#include <camel/camel-vtrash-folder.h>
#include <camel/camel-stream-mem.h>
#include <camel/camel-file-utils.h>
#include <camel/camel-stream-fs.h>

#include "e-util/e-mktemp.h"
#include "e-util/e-request.h"
#include "e-util/e-icon-factory.h"

#include "e-util/e-error.h"

#include "em-vfolder-rule.h"

#include "mail-mt.h"
#include "mail-ops.h"
#include "mail-tools.h"
#include "mail-config.h"
#include "mail-component.h"
#include "mail-vfolder.h"

#include "em-utils.h"
#include "em-popup.h"
#include "em-marshal.h"
#include "em-folder-tree.h"
#include "em-folder-tree-model.h"
#include "em-folder-utils.h"
#include "em-folder-selector.h"
#include "em-folder-selection.h"
#include "em-folder-properties.h"

#define d(x)

extern CamelSession *session;

static gboolean
emfu_is_special_local_folder (const char *name)
{
    return (!strcmp (name, "Drafts") || !strcmp (name, "Inbox") || !strcmp (name, "Outbox") || !strcmp (name, "Sent"));
}

struct _EMCopyFolders {
    MailMsg base;

    /* input data */
    CamelStore *fromstore;
    CamelStore *tostore;

    char *frombase;
    char *tobase;

    int delete;
};

static gchar *
emft_copy_folders__desc (struct _EMCopyFolders *m, gint complete)
{
    return g_strdup_printf (_("Copying `%s' to `%s'"), m->frombase, m->tobase);
}

static void
emft_copy_folders__exec (struct _EMCopyFolders *m)
{
    guint32 flags = CAMEL_STORE_FOLDER_INFO_FAST | CAMEL_STORE_FOLDER_INFO_RECURSIVE | CAMEL_STORE_FOLDER_INFO_SUBSCRIBED;
    GList *pending = NULL, *deleting = NULL, *l;
    GString *fromname, *toname;
    CamelFolderInfo *fi;
    const char *tmp;
    int fromlen;

    if (!(fi = camel_store_get_folder_info (m->fromstore, m->frombase, flags, &m->base.ex)))
        return;

    pending = g_list_append (pending, fi);

    toname = g_string_new ("");
    fromname = g_string_new ("");

    tmp = strrchr (m->frombase, '/');
    if (tmp == NULL)
        fromlen = 0;
    else
        fromlen = tmp - m->frombase + 1;

    d(printf ("top name is '%s'\n", fi->full_name));

    while (pending) {
        CamelFolderInfo *info = pending->data;

        pending = g_list_remove_link (pending, pending);
        while (info) {
            CamelFolder *fromfolder, *tofolder;
            GPtrArray *uids;
            int deleted = 0;

            if (info->child)
                pending = g_list_append (pending, info->child);

            if (m->tobase[0])
                g_string_printf (toname, "%s/%s", m->tobase, info->full_name + fromlen);
            else
                g_string_printf (toname, "%s", info->full_name + fromlen);

            d(printf ("Copying from '%s' to '%s'\n", info->full_name, toname->str));

            /* This makes sure we create the same tree, e.g. from a nonselectable source */
            /* Not sure if this is really the 'right thing', e.g. for spool stores, but it makes the ui work */
            if ((info->flags & CAMEL_FOLDER_NOSELECT) == 0) {
                d(printf ("this folder is selectable\n"));
                if (m->tostore == m->fromstore && m->delete) {
                    camel_store_rename_folder (m->fromstore, info->full_name, toname->str, &m->base.ex);
                    if (camel_exception_is_set (&m->base.ex))
                        goto exception;

                    /* this folder no longer exists, unsubscribe it */
                    if (camel_store_supports_subscriptions (m->fromstore))
                        camel_store_unsubscribe_folder (m->fromstore, info->full_name, NULL);

                    deleted = 1;
                } else {
                    if (!(fromfolder = camel_store_get_folder (m->fromstore, info->full_name, 0, &m->base.ex)))
                        goto exception;

                    if (!(tofolder = camel_store_get_folder (m->tostore, toname->str, CAMEL_STORE_FOLDER_CREATE, &m->base.ex))) {
                        camel_object_unref (fromfolder);
                        goto exception;
                    }

                    uids = camel_folder_get_uids (fromfolder);
                    camel_folder_transfer_messages_to (fromfolder, uids, tofolder, NULL, m->delete, &m->base.ex);
                    camel_folder_free_uids (fromfolder, uids);

                    if (m->delete)
                        camel_folder_sync(fromfolder, TRUE, NULL);

                    camel_object_unref (fromfolder);
                    camel_object_unref (tofolder);
                }
            }

            if (camel_exception_is_set (&m->base.ex))
                goto exception;
            else if (m->delete && !deleted)
                deleting = g_list_prepend (deleting, info);

            /* subscribe to the new folder if appropriate */
            if (camel_store_supports_subscriptions (m->tostore)
                && !camel_store_folder_subscribed (m->tostore, toname->str))
                camel_store_subscribe_folder (m->tostore, toname->str, NULL);

            info = info->next;
        }
    }

    /* delete the folders in reverse order from how we copyied them, if we are deleting any */
    l = deleting;
    while (l) {
        CamelFolderInfo *info = l->data;

        d(printf ("deleting folder '%s'\n", info->full_name));

        /* FIXME: we need to do something with the exception
           since otherwise the users sees a failed operation
           with no error message or even any warnings */
        if (camel_store_supports_subscriptions (m->fromstore))
            camel_store_unsubscribe_folder (m->fromstore, info->full_name, NULL);

        camel_store_delete_folder (m->fromstore, info->full_name, NULL);
        l = l->next;
    }

 exception:

    camel_store_free_folder_info (m->fromstore, fi);
    g_list_free (deleting);

    g_string_free (toname, TRUE);
    g_string_free (fromname, TRUE);
}

static void
emft_copy_folders__free (struct _EMCopyFolders *m)
{
    camel_object_unref (m->fromstore);
    camel_object_unref (m->tostore);

    g_free (m->frombase);
    g_free (m->tobase);
}

static MailMsgInfo copy_folders_info = {
    sizeof (struct _EMCopyFolders),
    (MailMsgDescFunc) emft_copy_folders__desc,
    (MailMsgExecFunc) emft_copy_folders__exec,
    (MailMsgDoneFunc) NULL,
    (MailMsgFreeFunc) emft_copy_folders__free
};

int
em_folder_utils_copy_folders(CamelStore *fromstore, const char *frombase, CamelStore *tostore, const char *tobase, int delete)
{
    struct _EMCopyFolders *m;
    int seq;

    m = mail_msg_new (&copy_folders_info);
    camel_object_ref (fromstore);
    m->fromstore = fromstore;
    camel_object_ref (tostore);
    m->tostore = tostore;
    m->frombase = g_strdup (frombase);
    m->tobase = g_strdup (tobase);
    m->delete = delete;
    seq = m->base.seq;

    mail_msg_unordered_push (m);

    return seq;
}

struct _copy_folder_data {
    CamelFolderInfo *fi;
    gboolean delete;
};

static void
emfu_copy_folder_selected (const char *uri, void *data)
{
    struct _copy_folder_data *cfd = data;
    CamelStore *fromstore = NULL, *tostore = NULL;
    char *tobase = NULL;
    CamelException ex;
    CamelURL *url;

    if (uri == NULL) {
        g_free (cfd);
        return;
    }

    camel_exception_init (&ex);

    if (!(fromstore = camel_session_get_store (session, cfd->fi->uri, &ex))) {
        e_error_run(NULL,
                cfd->delete?"mail:no-move-folder-notexist":"mail:no-copy-folder-notexist", cfd->fi->full_name, uri, ex.desc, NULL);
        goto fail;
    }

    if (cfd->delete && fromstore == mail_component_peek_local_store (NULL) && emfu_is_special_local_folder (cfd->fi->full_name)) {
        GtkWidget *w = e_error_new (NULL,
                "mail:no-rename-special-folder", cfd->fi->full_name, NULL);
        em_utils_show_error_silent (w);
        goto fail;
    }

    if (!(tostore = camel_session_get_store (session, uri, &ex))) {
        e_error_run(NULL,
                cfd->delete?"mail:no-move-folder-to-notexist":"mail:no-copy-folder-to-notexist", cfd->fi->full_name, uri, ex.desc, NULL);
        goto fail;
    }

    url = camel_url_new (uri, NULL);
    if (((CamelService *)tostore)->provider->url_flags & CAMEL_URL_FRAGMENT_IS_PATH)
        tobase = url->fragment;
    else if (url->path && url->path[0])
        tobase = url->path+1;
    if (tobase == NULL)
        tobase = "";

    em_folder_utils_copy_folders(fromstore, cfd->fi->full_name, tostore, tobase, cfd->delete);

    camel_url_free (url);
fail:
    if (fromstore)
        camel_object_unref(fromstore);
    if (tostore)
        camel_object_unref(tostore);
    camel_exception_clear (&ex);
    g_free (cfd);
}

/* tree here is the 'destination' selector, not 'self' */
static gboolean
emfu_copy_folder_exclude(EMFolderTree *tree, GtkTreeModel *model, GtkTreeIter *iter, void *data)
{
    struct _copy_folder_data *cfd = data;
    int fromvfolder, tovfolder;
    char *touri;
    guint flags;
    gboolean is_store;

    /* handles moving to/from vfolders */

    fromvfolder = strncmp(cfd->fi->uri, "vfolder:", 8) == 0;
    gtk_tree_model_get(model, iter, COL_STRING_URI, &touri, COL_UINT_FLAGS, &flags, COL_BOOL_IS_STORE, &is_store, -1);
    tovfolder = strncmp(touri, "vfolder:", 8) == 0;
    g_free(touri);

    /* moving from vfolder to normal- not allowed */
    if (fromvfolder && !tovfolder && cfd->delete)
        return FALSE;
    /* copy/move from normal folder to vfolder - not allowed */
    if (!fromvfolder && tovfolder)
        return FALSE;
    /* copying to vfolder - not allowed */
    if (tovfolder && !cfd->delete)
        return FALSE;

    return (flags & EMFT_EXCLUDE_NOINFERIORS) == 0;
}

/* FIXME: this interface references the folderinfo without copying it  */
/* FIXME: these functions must be documented */
void
em_folder_utils_copy_folder(CamelFolderInfo *folderinfo, int delete)
{
    struct _copy_folder_data *cfd;

    cfd = g_malloc (sizeof (*cfd));
    cfd->fi = folderinfo;
    cfd->delete = delete;

    em_select_folder (NULL, _("Select folder"), delete?_("_Move"):_("C_opy"),
              NULL, emfu_copy_folder_exclude,
              emfu_copy_folder_selected, cfd);
}

static void
emfu_delete_rec (CamelStore *store, CamelFolderInfo *fi, CamelException *ex)
{
    while (fi) {
        CamelFolder *folder;

        if (fi->child) {
            emfu_delete_rec (store, fi->child, ex);
            if (camel_exception_is_set (ex))
                return;
        }

        d(printf ("deleting folder '%s'\n", fi->full_name));

        /* shouldn't camel do this itself? */
        if (camel_store_supports_subscriptions (store))
            camel_store_unsubscribe_folder (store, fi->full_name, NULL);

        if (!(folder = camel_store_get_folder (store, fi->full_name, 0, ex)))
            return;

        if (!CAMEL_IS_VEE_FOLDER (folder)) {
            GPtrArray *uids = camel_folder_get_uids (folder);
            int i;

            camel_folder_freeze (folder);
            for (i = 0; i < uids->len; i++)
                camel_folder_delete_message (folder, uids->pdata[i]);

            camel_folder_free_uids (folder, uids);

            camel_folder_sync (folder, TRUE, NULL);
            camel_folder_thaw (folder);
        }

        camel_store_delete_folder (store, fi->full_name, ex);
        if (camel_exception_is_set (ex))
            return;

        fi = fi->next;
    }
}

static void
emfu_delete_folders (CamelStore *store, const char *full_name, CamelException *ex)
{
    guint32 flags = CAMEL_STORE_FOLDER_INFO_RECURSIVE | CAMEL_STORE_FOLDER_INFO_FAST | CAMEL_STORE_FOLDER_INFO_SUBSCRIBED;
    CamelFolderInfo *fi;

    fi = camel_store_get_folder_info (store, full_name, flags, ex);
    if (camel_exception_is_set (ex))
        return;

    emfu_delete_rec (store, fi, ex);
    camel_store_free_folder_info (store, fi);
}

static void
emfu_delete_response (GtkWidget *dialog, int response, gpointer data)
{
    CamelStore *store;
    CamelException ex;
    char *full_name;

    full_name = g_object_get_data ((GObject *) dialog, "full_name");
    store = g_object_get_data ((GObject *) dialog, "store");

    if (response == GTK_RESPONSE_OK) {
        camel_exception_init (&ex);
        emfu_delete_folders (store, full_name, &ex);
        if (camel_exception_is_set (&ex)) {
            GtkWidget *w = e_error_new(NULL,
                    "mail:no-delete-folder", full_name, ex.desc, NULL);
            em_utils_show_error_silent (w);
            camel_exception_clear (&ex);
        }
    }

    gtk_widget_destroy (dialog);
}

/* FIXME: these functions must be documented */
void
em_folder_utils_delete_folder (CamelFolder *folder)
{
    CamelStore *local;
    GtkWidget *dialog;

    local = mail_component_peek_local_store (NULL);

    if (folder->parent_store == local && emfu_is_special_local_folder (folder->full_name)) {
        dialog = e_error_new (NULL, "mail:no-delete-special-folder", folder->full_name, NULL);
        em_utils_show_error_silent (dialog);
        return;
    }

    camel_object_ref (folder->parent_store);

    dialog = e_error_new(NULL,
                 (folder->parent_store && CAMEL_IS_VEE_STORE(folder->parent_store))?"mail:ask-delete-vfolder":"mail:ask-delete-folder",
                 folder->full_name, NULL);
    g_object_set_data_full ((GObject *) dialog, "full_name", g_strdup (folder->full_name), g_free);
    g_object_set_data_full ((GObject *) dialog, "store", folder->parent_store, camel_object_unref);
    g_signal_connect (dialog, "response", G_CALLBACK (emfu_delete_response), NULL);
    gtk_widget_show (dialog);
}

/* FIXME: this must become threaded */
/* FIXME: these functions must be documented */
void
em_folder_utils_rename_folder (CamelFolder *folder)
{
    char *prompt, *new_name;
    const char *p;
    CamelStore *local;
    gboolean done = FALSE;
    size_t base_len;

    local = mail_component_peek_local_store (NULL);

    /* don't allow user to rename one of the special local folders */
    if (folder->parent_store == local && emfu_is_special_local_folder (folder->full_name)) {
        e_error_run(NULL,
                "mail:no-rename-special-folder", folder->full_name, NULL);
        return;
    }

    if ((p = strrchr (folder->full_name, '/')))
        base_len = (size_t) (p - folder->full_name);
    else
        base_len = 0;

    prompt = g_strdup_printf (_("Rename the \"%s\" folder to:"), folder->name);
    while (!done) {
        new_name = e_request_string (NULL, _("Rename Folder"), prompt, folder->name);
        if (new_name == NULL || !strcmp (folder->name, new_name)) {
            /* old name == new name */
            done = TRUE;
        } else if (strchr(new_name, '/') != NULL) {
            e_error_run(NULL,
                    "mail:no-rename-folder", folder->name, new_name, _("Folder names cannot contain '/'"), NULL);
            done = TRUE;
        } else {
            CamelFolderInfo *fi;
            CamelException ex;
            char *path, *tmp;

            if (base_len > 0) {
                path = g_malloc (base_len + strlen (new_name) + 2);
                memcpy (path, folder->full_name, base_len);
                tmp = path + base_len;
                *tmp++ = '/';
                strcpy (tmp, new_name);
            } else {
                path = g_strdup (new_name);
            }

            camel_exception_init (&ex);
            if ((fi = camel_store_get_folder_info (folder->parent_store, path, CAMEL_STORE_FOLDER_INFO_FAST, &ex)) != NULL) {
                camel_store_free_folder_info (folder->parent_store, fi);
                e_error_run(NULL,
                        "mail:no-rename-folder-exists", folder->name, new_name, NULL);
            } else {
                const char *oldpath, *newpath;

                oldpath = folder->full_name;
                newpath = path;

                d(printf ("renaming %s to %s\n", oldpath, newpath));

                camel_exception_clear (&ex);
                camel_store_rename_folder (folder->parent_store, oldpath, newpath, &ex);
                if (camel_exception_is_set (&ex)) {
                    e_error_run(NULL,
                            "mail:no-rename-folder", oldpath, newpath, ex.desc, NULL);
                    camel_exception_clear (&ex);
                }

                done = TRUE;
            }

            g_free (path);
        }

        g_free (new_name);
    }
}

struct _EMCreateFolder {
    MailMsg base;

    /* input data */
    CamelStore *store;
    char *full_name;
    char *parent;
    char *name;

    /* output data */
    CamelFolderInfo *fi;

    /* callback data */
    void (* done) (CamelFolderInfo *fi, void *user_data);
    void *user_data;
};

/* Temporary Structure to hold data to pass across function */
struct _EMCreateFolderTempData
{
    EMFolderTree * emft;
    EMFolderSelector * emfs;
    char *uri;
};

static gchar *
emfu_create_folder__desc (struct _EMCreateFolder *m)
{
    return g_strdup_printf (_("Creating folder `%s'"), m->full_name);
}

static void
emfu_create_folder__exec (struct _EMCreateFolder *m)
{
    d(printf ("creating folder parent='%s' name='%s' full_name='%s'\n", m->parent, m->name, m->full_name));

    if ((m->fi = camel_store_create_folder (m->store, m->parent, m->name, &m->base.ex))) {
        if (camel_store_supports_subscriptions (m->store))
            camel_store_subscribe_folder (m->store, m->full_name, &m->base.ex);
    }
}

static void
emfu_create_folder__done (struct _EMCreateFolder *m)
{
    if (m->done)
        m->done (m->fi, m->user_data);
}

static void
emfu_create_folder__free (struct _EMCreateFolder *m)
{
    camel_store_free_folder_info (m->store, m->fi);
    camel_object_unref (m->store);
    g_free (m->full_name);
    g_free (m->parent);
    g_free (m->name);
}

static MailMsgInfo create_folder_info = {
    sizeof (struct _EMCreateFolder),
    (MailMsgDescFunc) emfu_create_folder__desc,
    (MailMsgExecFunc) emfu_create_folder__exec,
    (MailMsgDoneFunc) emfu_create_folder__done,
    (MailMsgFreeFunc) emfu_create_folder__free
};


static int
emfu_create_folder_real (CamelStore *store, const char *full_name, void (* done) (CamelFolderInfo *fi, void *user_data), void *user_data)
{
    char *name, *namebuf = NULL;
    struct _EMCreateFolder *m;
    const char *parent;
    int id;

    namebuf = g_strdup (full_name);
    if (!(name = strrchr (namebuf, '/'))) {
        name = namebuf;
        parent = "";
    } else {
        *name++ = '\0';
        parent = namebuf;
    }

    m = mail_msg_new (&create_folder_info);
    camel_object_ref (store);
    m->store = store;
    m->full_name = g_strdup (full_name);
    m->parent = g_strdup (parent);
    m->name = g_strdup (name);
    m->user_data = user_data;
    m->done = done;

    g_free (namebuf);

    id = m->base.seq;
    mail_msg_unordered_push (m);

    return id;
}

static void
new_folder_created_cb (CamelFolderInfo *fi, void *user_data)
{
    struct _EMCreateFolderTempData *emcftd=user_data;
    if (fi){
        gtk_widget_destroy ((GtkWidget *) emcftd->emfs);

        /* Exapnding newly created folder */
        if (emcftd->emft)
            em_folder_tree_set_selected ((EMFolderTree *) emcftd->emft, emcftd->uri, GPOINTER_TO_INT(g_object_get_data ((GObject *)emcftd->emft, "select")) ? FALSE : TRUE);
    }
    g_object_unref (emcftd->emfs);
    g_free (emcftd->uri);
    g_free (emcftd);
}

static void
emfu_popup_new_folder_response (EMFolderSelector *emfs, int response, gpointer data)
{
    EMFolderTreeModelStoreInfo *si;
    const char *uri, *path;
    CamelException ex;
    CamelStore *store;
    struct _EMCreateFolderTempData  *emcftd;

    if (response != GTK_RESPONSE_OK) {
        gtk_widget_destroy ((GtkWidget *) emfs);
        return;
    }

    uri = em_folder_selector_get_selected_uri (emfs);
    path = em_folder_selector_get_selected_path (emfs);

    d(printf ("Creating new folder: %s (%s)\n", path, uri));

    g_print ("DEBUG: %s (%s)\n", path, uri);

    camel_exception_init (&ex);
    if (!(store = (CamelStore *) camel_session_get_service (session, uri, CAMEL_PROVIDER_STORE, &ex))) {
        camel_exception_clear (&ex);
        return;
    }

    if (!(si = em_folder_tree_get_model_storeinfo (emfs->emft, store))) {
        camel_object_unref (store);
        g_return_if_reached();
    }

    /* HACK: we need to create vfolders using the vfolder editor */
    if (CAMEL_IS_VEE_STORE(store)) {
        EMVFolderRule *rule;

        /* ensures vfolder is running */
        vfolder_load_storage ();

        rule = em_vfolder_rule_new();
        filter_rule_set_name((FilterRule *)rule, path);
        vfolder_gui_add_rule(rule);
        gtk_widget_destroy((GtkWidget *)emfs);
    } else {
        /* Temp data to pass to create_folder_real function */
        emcftd = (struct _EMCreateFolderTempData *) g_malloc(sizeof(struct _EMCreateFolderTempData));
        emcftd->emfs = emfs;
        emcftd->uri = g_strdup (uri);
        emcftd->emft = (EMFolderTree *) data;

        g_object_ref (emfs);
        emfu_create_folder_real (si->store, path, new_folder_created_cb, emcftd);
    }

    camel_object_unref (store);
    camel_exception_clear (&ex);
}

/* FIXME: these functions must be documented */
void
em_folder_utils_create_folder (CamelFolderInfo *folderinfo, EMFolderTree *emft) {
    EMFolderTree *folder_tree;
    EMFolderTreeModel *model;
    GtkWidget *dialog;

    model = mail_component_peek_tree_model (mail_component_peek ());
    folder_tree = (EMFolderTree *) em_folder_tree_new_with_model (model);

    dialog = em_folder_selector_create_new (folder_tree, 0, _("Create folder"), _("Specify where to create the folder:"));
    if (folderinfo != NULL)
        em_folder_selector_set_selected ((EMFolderSelector *) dialog, folderinfo->uri);
    g_signal_connect (dialog, "response", G_CALLBACK (emfu_popup_new_folder_response), emft);
    gtk_widget_show (dialog);
}