path: root/mail/mail-tools.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* mail-ops.c: callbacks for the mail toolbar/menus */

/* 
 * Authors: 
 *  Dan Winship <danw@ximian.com>
 *  Peter Williams <peterw@ximian.com>
 *  Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright 2000 Ximian, Inc. (www.ximian.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

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

#include <unistd.h>
#include <pthread.h>
#include <ctype.h>
#include <errno.h>
#include "camel/camel.h"
#include "camel/camel-vee-folder.h"
#include "mail-vfolder.h"
#include "filter/vfolder-rule.h"
#include "filter/vfolder-context.h"
#include "filter/filter-option.h"
#include "filter/filter-input.h"
#include "mail.h" /*session*/
#include "mail-tools.h"
#include "mail-local.h"
#include "mail-mt.h"
#include "e-util/e-html-utils.h"

/* **************************************** */

CamelFolder *
mail_tool_get_folder_from_urlname (const gchar *url, const gchar *name,
                   guint32 flags, CamelException *ex)
{
    CamelStore *store;
    CamelFolder *folder;

    store = camel_session_get_store (session, url, ex);
    if (!store)
        return NULL;

    folder = camel_store_get_folder (store, name, flags, ex);
    camel_object_unref (CAMEL_OBJECT (store));

    return folder;
}

char *
mail_tool_get_folder_name (CamelFolder *folder)
{
    const char *name = camel_folder_get_full_name (folder);
    char *path, *pend;
    
    /* This is a kludge. */
    if (strcmp (name, "mbox") && strcmp (name, "mh") && strcmp (name, "maildir"))
        return g_strdup (name);
    
    /* For mbox/mh, return the parent store's final path component. */
    path = g_strdup (CAMEL_SERVICE (folder->parent_store)->url->path);
    pend = path + strlen (path) - 1;
    if (*pend == '/')
        *pend = '\0';
    
    pend = path;
    path = g_strdup (g_basename (path));
    g_free (pend);
    
    return path;
}

gchar *
mail_tool_get_local_movemail_path (void)
{
    static gint count = 0;
    static pthread_mutex_t movemail_path_lock = PTHREAD_MUTEX_INITIALIZER;
    gint my_count;

    /* Ah, the joys of being multi-threaded... */
    pthread_mutex_lock (&movemail_path_lock);
    my_count = count;
    ++count;
    pthread_mutex_unlock (&movemail_path_lock);

    return g_strdup_printf ("%s/local/Inbox/movemail.%d", evolution_dir, my_count);
}

CamelFolder *
mail_tool_get_local_inbox (CamelException *ex)
{
    gchar *url;
    CamelFolder *folder;

    url = g_strdup_printf("file://%s/local/Inbox", evolution_dir);
    folder = mail_tool_uri_to_folder (url, ex);
    g_free (url);
    return folder;
}

CamelFolder *
mail_tool_get_inbox (const gchar *url, CamelException *ex)
{
    CamelStore *store;
    CamelFolder *folder;

    store = camel_session_get_store (session, url, ex);
    if (!store)
        return NULL;

    folder = camel_store_get_inbox (store, ex);
    camel_object_unref (CAMEL_OBJECT (store));

    return folder;
}

/* why is this function so stupidly complex when allthe work is done elsehwere? */
char *
mail_tool_do_movemail (const gchar *source_url, CamelException *ex)
{
    gchar *dest_path;
    const gchar *source;
    struct stat sb;
#ifndef MOVEMAIL_PATH
    int tmpfd;
#endif
    g_return_val_if_fail (strncmp (source_url, "mbox:", 5) == 0, NULL);

    /* Set up our destination. */

    dest_path = mail_tool_get_local_movemail_path();

    /* Create a new movemail mailbox file of 0 size */

#ifndef MOVEMAIL_PATH
    tmpfd = open (dest_path, O_RDWR | O_CREAT | O_APPEND, S_IRUSR | S_IWUSR);

    if (tmpfd == -1) {
        camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
                      _("Couldn't create temporary "
                      "mbox `%s': %s"), dest_path, g_strerror (errno));
        g_free (dest_path);
        return NULL;
    }

    close (tmpfd);
#endif

    /* Skip over "mbox:" plus host part (if any) of url. */

    source = source_url + 5;
    if (!strncmp (source, "//", 2))
        source = strchr (source + 2, '/');


    /* Movemail from source (source_url) to dest_path */
    camel_movemail (source, dest_path, ex);

    if (stat (dest_path, &sb) < 0 || sb.st_size == 0) {
        unlink (dest_path); /* Clean up the movemail.foo file. */
        g_free (dest_path);
        return NULL;
    }

    if (camel_exception_is_set (ex)) {
        g_free (dest_path);
        return NULL;
    }

    return dest_path;
}

char *
mail_tool_generate_forward_subject (CamelMimeMessage *msg)
{
    const char *subject;
    char *fwd_subj, *fromstr;
    const CamelInternetAddress *from;

    from = camel_mime_message_get_from(msg);
    subject = camel_mime_message_get_subject(msg);

    if (from) {
        fromstr = camel_address_format((CamelAddress *)from);
        if (subject && *subject) {
            fwd_subj = g_strdup_printf ("[%s] %s", fromstr, subject);
        } else {
            fwd_subj = g_strdup_printf (_("[%s] (forwarded message)"),
                            fromstr);
        }
        g_free(fromstr);
    } else {
        if (subject && *subject) {
            if (strncmp (subject, "Fwd: ", 5) == 0)
                subject += 4;
            fwd_subj = g_strdup_printf ("Fwd: %s", subject);
        } else
            fwd_subj = g_strdup (_("Fwd: (no subject)"));
    }

    return fwd_subj;
}

CamelMimePart *
mail_tool_make_message_attachment (CamelMimeMessage *message)
{
    CamelMimePart *part;
    const char *subject;
    gchar *desc;

    /*camel_object_ref (CAMEL_OBJECT (message));*/

    subject = camel_mime_message_get_subject (message);
    if (subject)
        desc = g_strdup_printf (_("Forwarded message - %s"), subject);
    else
        desc = g_strdup (_("Forwarded message (no subject)"));

    part = camel_mime_part_new ();
    camel_mime_part_set_disposition (part, "inline");
    camel_mime_part_set_description (part, desc);
    camel_medium_set_content_object (CAMEL_MEDIUM (part),
                     CAMEL_DATA_WRAPPER (message));
    camel_mime_part_set_content_type (part, "message/rfc822");
    g_free(desc);
    /*camel_object_unref (CAMEL_OBJECT (message));*/
    return part;
}

struct folder_cache_info {
    char *uri;
    CamelFolder *folder;
    int unread;
};

static void
update_unread_count_main (CamelObject *object, gpointer event_data,
              gpointer user_data)
{
    CamelFolder *folder = (CamelFolder *)object;
    struct folder_cache_info *fci = user_data;
    EvolutionStorage *storage;
    char *name;

    storage = mail_lookup_storage (folder->parent_store);
    if (fci->unread == 0)
        name = g_strdup (camel_folder_get_name (folder));
    else
        name = g_strdup_printf ("%s (%d)", camel_folder_get_name (folder), fci->unread);

    evolution_storage_update_folder_by_uri (storage, fci->uri, name,
                        fci->unread != 0);
    g_free (name);
    gtk_object_unref (GTK_OBJECT (storage));
    camel_object_unref (object);
}

static void
update_unread_count (CamelObject *object, gpointer event_data,
             gpointer user_data)
{
    CamelFolder *folder = (CamelFolder *)object;
    struct folder_cache_info *fci = user_data;
    int unread;

    unread = camel_folder_get_unread_message_count (folder);
    if (unread == fci->unread)
        return;
    fci->unread = unread;
    camel_object_ref (object);
    mail_proxy_event (update_unread_count_main, object, event_data, user_data);
}

static GHashTable *folders = NULL;
static GStaticMutex folders_lock = G_STATIC_MUTEX_INIT;

static void
uncache_folder (CamelObject *folder, gpointer event_data, gpointer user_data)
{
    struct folder_cache_info *fci = user_data;

    g_static_mutex_lock (&folders_lock);
    g_hash_table_remove (folders, fci->uri);
    g_static_mutex_unlock (&folders_lock);

    g_free (fci->uri);
    g_free (fci);
}

static void
cache_folder (CamelFolder *folder, const char *uri)
{
    CamelObject *object = CAMEL_OBJECT (folder);
    EvolutionStorage *storage;
    struct folder_cache_info *fci;

    fci = g_new (struct folder_cache_info, 1);
    fci->folder = folder;
    fci->uri = g_strdup (uri);
    fci->unread = 0;

    g_hash_table_insert (folders, fci->uri, fci);
    camel_object_hook_event (object, "finalize", uncache_folder, fci);

    storage = mail_lookup_storage (folder->parent_store);
    if (storage) {
        gtk_object_unref (GTK_OBJECT (storage));
        update_unread_count (object, NULL, fci);
        camel_object_hook_event (object, "message_changed",
                     update_unread_count, fci);
        camel_object_hook_event (object, "folder_changed",
                     update_unread_count, fci);
    }
}

CamelFolder *
mail_tool_uri_to_folder (const char *uri, CamelException *ex)
{
    CamelURL *url;
    CamelStore *store = NULL;
    CamelFolder *folder = NULL;
    int offset = 0;

    g_return_val_if_fail (uri != NULL, NULL);

    g_static_mutex_lock (&folders_lock);
    if (folders) {
        struct folder_cache_info *fci;

        fci = g_hash_table_lookup (folders, uri);
        g_static_mutex_unlock (&folders_lock);
        if (fci) {
            camel_object_ref (CAMEL_OBJECT (fci->folder));
            return fci->folder;
        }
    } else {
        folders = g_hash_table_new (g_str_hash, g_str_equal);
        g_static_mutex_unlock (&folders_lock);
    }

    if (!strncmp (uri, "vtrash:", 7))
        offset = 7;

    url = camel_url_new (uri + offset, ex);
    if (!url) {
        g_static_mutex_unlock (&folders_lock);
        return NULL;
    }

    if (!strcmp (url->protocol, "vfolder")) {
        folder = vfolder_uri_to_folder (uri, ex);
    } else {
        store = camel_session_get_store (session, uri + offset, ex);
        if (store) {
            char *name;
            
            /* if we have a fragment, then the path is actually used by the store,
               so the fragment is the path to the folder instead */
            if (url->fragment) {
                name = url->fragment;
            } else {
                if (url->path && *url->path)
                    name = url->path + 1;
                else
                    name = "";
            }

            if (offset)
                folder = camel_store_get_trash (store, ex);
            else
                folder = camel_store_get_folder (store, name,
                                 CAMEL_STORE_FOLDER_CREATE, ex);
            camel_object_unref (CAMEL_OBJECT (store));
        }
    }

    if (camel_exception_is_set (ex)) {
        if (folder) {
            camel_object_unref (CAMEL_OBJECT (folder));
            folder = NULL;
        }
    }
    camel_url_free (url);

    g_static_mutex_lock (&folders_lock);
    if (!g_hash_table_lookup (folders, uri))
        cache_folder (folder, uri);
    g_static_mutex_unlock (&folders_lock);

    return folder;
}

/**
 * mail_tool_quote_message:
 * @message: mime message to quote
 * @fmt: credits format - example: "On %s, %s wrote:\n"
 * @Varargs: arguments
 *
 * Returns an allocated buffer containing the quoted message.
 */
gchar *
mail_tool_quote_message (CamelMimeMessage *message, const char *fmt, ...)
{
    CamelDataWrapper *contents;
    gboolean want_plain, is_html;
    gchar *text;
    
    want_plain = !mail_config_get_send_html ();
    contents = camel_medium_get_content_object (CAMEL_MEDIUM (message));
    text = mail_get_message_body (contents, want_plain, &is_html);
    
    /* Set the quoted reply text. */
    if (text) {
        gchar *ret_text, *credits = NULL;
        
        /* create credits */
        if (fmt) {
            va_list ap;
            
            va_start (ap, fmt);
            credits = g_strdup_vprintf (fmt, ap);
            va_end (ap);
        }
        
        if (is_html) {
            ret_text = g_strdup_printf ("%s<!--+GtkHTML:<DATA class=\"ClueFlow\" key=\"orig\" value=\"1\">-->"
                            "<blockquote><i><font color=\"%06x\">\n%s\n"
                            "</font></i></blockquote>"
                            "<!--+GtkHTML:<DATA class=\"ClueFlow\" clear=\"orig\">-->",
                            credits ? credits : "",
                            mail_config_get_citation_color (), text);
        } else {
            gchar *s, *d, *quoted_text, *orig_text;
            gint lines, len;
            
            /* Count the number of lines in the body. If
             * the text ends with a \n, this will be one
             * too high, but that's ok. Allocate enough
             * space for the text and the "> "s.
             */
            for (s = text, lines = 0; s; s = strchr (s + 1, '\n'))
                lines++;
            
            /* offset is the size of the credits, strlen (text)
             * covers the body, lines * 2 does the "> "s, and
             * the last +2 covers the final "\0", plus an extra
             * "\n" in case text doesn't end with one.
             */
            quoted_text = g_malloc (strlen (text) + lines * 2 + 2);
            
            s = text;
            d = quoted_text;
            
            /* Copy text to quoted_text line by line,
             * prepending "> ".
             */
            while (1) {
                len = strcspn (s, "\n");
                if (len == 0 && !*s)
                    break;
                sprintf (d, "> %.*s\n", len, s);
                s += len;
                if (!*s++)
                    break;
                d += len + 3;
            }
            *d = '\0';
            
            /* Now convert that to HTML. */
            orig_text = e_text_to_html_full (quoted_text, E_TEXT_TO_HTML_PRE
                             | (mail_config_get_citation_highlight ()
                                ? E_TEXT_TO_HTML_MARK_CITATION : 0),
                             mail_config_get_citation_color ());
            g_free (quoted_text);
            ret_text = g_strdup_printf ("%s<!--+GtkHTML:<DATA class=\"ClueFlow\" key=\"orig\" value=\"1\">-->"
                            "%s"
                            "<!--+GtkHTML:<DATA class=\"ClueFlow\" clear=\"orig\">-->",
                            credits ? credits : "",
                            orig_text);
            g_free (orig_text);
        }
        
        g_free (text);
        printf ("ret: %s\n", ret_text);
        return ret_text;
    }
    
    return NULL;
}

/**
 * mail_tool_forward_message:
 * @message: mime message to quote
 *
 * Returns an allocated buffer containing the forwarded message.
 */
gchar *
mail_tool_forward_message (CamelMimeMessage *message)
{
    CamelDataWrapper *contents;
    gboolean want_plain, is_html;
    gchar *text;
    
    want_plain = !mail_config_get_send_html ();
    contents = camel_medium_get_content_object (CAMEL_MEDIUM (message));
    text = mail_get_message_body (contents, want_plain, &is_html);
    
    /* Set the quoted reply text. */
    if (text) {
        gchar *ret_text, *credits = NULL;
        const CamelInternetAddress *cia;
        char *buf, *from, *to, *subject;
        
        /* create credits */
        cia = camel_mime_message_get_from (message);
        buf = camel_address_format (CAMEL_ADDRESS (cia));
        if (buf) {
            from = e_text_to_html (buf, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
            g_free (buf);
        } else
            from = NULL;
        
        cia = camel_mime_message_get_recipients (message, CAMEL_RECIPIENT_TYPE_TO);
        buf = camel_address_format (CAMEL_ADDRESS (cia));
        if (buf) {
            to = e_text_to_html (buf, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
            g_free (buf);
        } else
            to = NULL;
        
        buf = (char *) camel_mime_message_get_subject (message);
        if (buf)
            subject = e_text_to_html (buf, E_TEXT_TO_HTML_CONVERT_NL | E_TEXT_TO_HTML_CONVERT_URLS);
        else
            subject = "";
        
        credits = g_strdup_printf (_("-----Forwarded Message-----<br>"
                         "<b>From:</b> %s<br>"
                         "<b>To:</b> %s<br>"
                         "<b>Subject:</b> %s<br>"),
                       from ? from : "", to ? to : "", subject);
        g_free (from);
        g_free (to);
        
        if (!is_html) {
            /* Now convert that to HTML. */
            ret_text = e_text_to_html (text, E_TEXT_TO_HTML_PRE);
            g_free (text);
            text = ret_text;
        }
        
        ret_text = g_strdup_printf ("%s<br>%s\n", credits, text);
        
        g_free (credits);
        g_free (text);
        
        return ret_text;
    }
    
    return NULL;
}