path: root/mail/mail-tools.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* 
 * 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 version 2 of the GNU General Public 
 * License as published by the Free Software Foundation.
 *
 * 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
 */

#include <config.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>

#include <glib.h>
#include <glib/gstdio.h>

#include <gconf/gconf.h>
#include <gconf/gconf-client.h>

#include <glib/gi18n.h>

#include <camel/camel-file-utils.h>
#include <camel/camel-mime-message.h>
#include <camel/camel-movemail.h>
#include <camel/camel-vee-folder.h>

#include "filter/filter-option.h"
#include "filter/filter-input.h"

#include <libedataserver/e-data-server-util.h>
#include "em-utils.h"
#include "em-vfolder-context.h"
#include "em-vfolder-rule.h"
#include "mail-component.h"
#include "mail-config.h"
#include "mail-folder-cache.h"
#include "mail-mt.h"
#include "mail-session.h"
#include "mail-tools.h"
#include "mail-vfolder.h"

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

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 (store);
    
    return folder;
}

CamelFolder *
mail_tool_get_trash (const gchar *url, int connect, CamelException *ex)
{
    CamelStore *store;
    CamelFolder *trash;
    
    if (connect)
        store = camel_session_get_store (session, url, ex);
    else
        store = (CamelStore *) camel_session_get_service (session, url, CAMEL_PROVIDER_STORE, ex);
    
    if (!store)
        return NULL;
    
    if (connect || ((CamelService *) store)->status == CAMEL_SERVICE_CONNECTED)
        trash = camel_store_get_trash (store, ex);
    else
        trash = NULL;
    
    camel_object_unref (store);
    
    return trash;
}

#ifndef G_OS_WIN32

static char *
mail_tool_get_local_movemail_path (const unsigned char *uri, CamelException *ex)
{
    unsigned char *safe_uri, *c;
    char *path, *full;
    struct stat st;

    safe_uri = (unsigned char *)g_strdup ((const gchar *)uri);
    for (c = safe_uri; *c; c++)
        if (strchr("/:;=|%&#!*^()\\, ", *c) || !isprint((int) *c))
            *c = '_';

    path = g_strdup_printf("%s/mail/spool", mail_component_peek_base_directory(NULL));
    if (g_stat(path, &st) == -1 && g_mkdir_with_parents(path, 0777) == -1) {
        camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM, _("Could not create spool directory `%s': %s"),
                     path, g_strerror(errno));
        g_free(path);
        return NULL;
    }

    full = g_strdup_printf("%s/movemail.%s", path, safe_uri);
    g_free(path);
    g_free(safe_uri);
    
    return full;
}

#endif

char *
mail_tool_do_movemail (const char *source_url, CamelException *ex)
{
#ifndef G_OS_WIN32
    char *dest_path;
    struct stat sb;
    CamelURL *uri;

    uri = camel_url_new(source_url, ex);
    if (uri == NULL)
        return NULL;

    if (strcmp(uri->protocol, "mbox") != 0) {
        /* This is really only an internal error anyway */
        camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_URL_INVALID,
                      _("Trying to movemail a non-mbox source `%s'"),
                      source_url);
        camel_url_free(uri);
        return NULL;
    }
    
    /* Set up our destination. */
    dest_path = mail_tool_get_local_movemail_path ((unsigned char *)source_url, ex);
    if (dest_path == NULL)
        return NULL;

    /* Movemail from source (source_url) to dest_path */
    camel_movemail (uri->path, dest_path, ex);
    camel_url_free(uri);

    if (g_stat (dest_path, &sb) < 0 || sb.st_size == 0) {
        g_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;
#else
    /* Unclear yet whether camel-movemail etc makes any sense on
     * Win32, at least it is not ported yet.
     */
    g_warning("%s: Not implemented", __FUNCTION__);
    return NULL;
#endif
}

char *
mail_tool_generate_forward_subject (CamelMimeMessage *msg)
{
    const char *subject;
    char *fwd_subj;
    const int max_subject_length = 1024;
    
    subject = camel_mime_message_get_subject(msg);
    
    if (subject && *subject) {
        /* Truncate insanely long subjects */
        if (strlen (subject) < max_subject_length) {
            fwd_subj = g_strdup_printf ("[Fwd: %s]", subject);
        } else {
            /* We can't use %.*s because it depends on the locale being C/POSIX
               or UTF-8 to work correctly in glibc */
            /*fwd_subj = g_strdup_printf ("[Fwd: %.*s...]", max_subject_length, subject);*/
            fwd_subj = g_malloc (max_subject_length + 11);
            memcpy (fwd_subj, "[Fwd: ", 6);
            memcpy (fwd_subj + 6, subject, max_subject_length);
            memcpy (fwd_subj + 6 + max_subject_length, "...]", 5);
        }
    } else {
        const CamelInternetAddress *from;
        char *fromstr;
        
        from = camel_mime_message_get_from (msg);
        if (from) {
            fromstr = camel_address_format (CAMEL_ADDRESS (from));
            fwd_subj = g_strdup_printf ("[Fwd: %s]", fromstr);
            g_free (fromstr);
        } else
            fwd_subj = g_strdup ("[Fwd: No Subject]");
    }
    
    return fwd_subj;
}

struct _camel_header_raw *
mail_tool_remove_xevolution_headers (CamelMimeMessage *message)
{
    struct _camel_header_raw *scan, *list = NULL;

    for (scan = ((CamelMimePart *)message)->headers;scan;scan=scan->next)
        if (!strncmp(scan->name, "X-Evolution", 11))
            camel_header_raw_append(&list, scan->name, scan->value, scan->offset);

    for (scan=list;scan;scan=scan->next)
        camel_medium_remove_header((CamelMedium *)message, scan->name);

    return list;
}

void
mail_tool_restore_xevolution_headers (CamelMimeMessage *message, struct _camel_header_raw *xev)
{
    for (;xev;xev=xev->next)
        camel_medium_add_header((CamelMedium *)message, xev->name, xev->value);
}

CamelMimePart *
mail_tool_make_message_attachment (CamelMimeMessage *message)
{
    CamelMimePart *part;
    const char *subject;
    struct _camel_header_raw *xev;
    char *desc;
    
    subject = camel_mime_message_get_subject (message);
    if (subject)
        desc = g_strdup_printf (_("Forwarded message - %s"), subject);
    else
        desc = g_strdup (_("Forwarded message"));
    
    /* rip off the X-Evolution headers */
    xev = mail_tool_remove_xevolution_headers (message);
    camel_header_raw_clear(&xev);
    
    /* remove Bcc headers */
    camel_medium_remove_header (CAMEL_MEDIUM (message), "Bcc");
    
    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);
    
    return part;
}

CamelFolder *
mail_tool_uri_to_folder (const char *uri, guint32 flags, CamelException *ex)
{
    CamelURL *url;
    CamelStore *store = NULL;
    CamelFolder *folder = NULL;
    int offset = 0;
    char *curi = NULL;

    g_return_val_if_fail (uri != NULL, NULL);

    /* TODO: vtrash and vjunk are no longer used for these uri's */
    if (!strncmp (uri, "vtrash:", 7))
        offset = 7;
    else if (!strncmp (uri, "vjunk:", 6))
        offset = 6;
    else if (!strncmp(uri, "email:", 6)) {
        /* FIXME?: the filter:get_folder callback should do this itself? */
        curi = em_uri_to_camel(uri);
        if (uri == NULL) {
            camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM, _("Invalid folder: `%s'"), uri);
            return NULL;
        }
        uri = curi;
    }
    
    url = camel_url_new (uri + offset, ex);
    if (!url) {
        g_free(curi);
        return NULL;
    }

    store = (CamelStore *)camel_session_get_service(session, uri+offset, CAMEL_PROVIDER_STORE, ex);
    if (store) {
        const 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) {
            if (offset == 7)
                folder = camel_store_get_trash (store, ex);
            else if (offset == 6)
                folder = camel_store_get_junk (store, ex);
            else
                g_assert (FALSE);
        } else
            folder = camel_store_get_folder (store, name, flags, ex);
        camel_object_unref (store);
    }
    
    if (folder)
        mail_note_folder (folder);
    
    camel_url_free (url);
    g_free(curi);
    
    return folder;
}

/**
 * mail_tools_x_evolution_message_parse:
 * @in: GtkSelectionData->data
 * @inlen: GtkSelectionData->length
 * @uids: pointer to a gptrarray that will be filled with uids on success
 *
 * Parses the GtkSelectionData and returns a CamelFolder and a list of
 * UIDs specified by the selection.
 **/
CamelFolder *
mail_tools_x_evolution_message_parse (char *in, unsigned int inlen, GPtrArray **uids)
{
    /* format: "uri\0uid1\0uid2\0uid3\0...\0uidn" */
    char *inptr, *inend;
    CamelFolder *folder;
    
    if (in == NULL)
        return NULL;
    
    folder = mail_tool_uri_to_folder (in, 0, NULL);
    
    if (!folder)
        return NULL;
    
    /* split the uids */
    inend = in + inlen;
    inptr = in + strlen (in) + 1;
    *uids = g_ptr_array_new ();
    while (inptr < inend) {
        char *start = inptr;
        
        while (inptr < inend && *inptr)
            inptr++;
        
        g_ptr_array_add (*uids, g_strndup (start, inptr - start));
        inptr++;
    }
    
    return folder;
}

/* FIXME: This should be a property on CamelFolder */
char *
mail_tools_folder_to_url (CamelFolder *folder)
{
    CamelURL *url;
    char *out;

    g_return_val_if_fail (CAMEL_IS_FOLDER (folder), NULL);

    url = camel_url_copy(((CamelService *)folder->parent_store)->url);
    if (((CamelService *)folder->parent_store)->provider->url_flags  & CAMEL_URL_FRAGMENT_IS_PATH) {
        camel_url_set_fragment(url, folder->full_name);
    } else {
        char *name = g_alloca(strlen(folder->full_name)+2);

        sprintf(name, "/%s", folder->full_name);
        camel_url_set_path(url, name);
    }

    out = camel_url_to_string(url, CAMEL_URL_HIDE_ALL);
    camel_url_free(url);

    return out;
}