path: root/mail/evolution-mbox-upgrade.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2003 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 Street #330, Boston, MA 02111-1307, USA.
 *
 */


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

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

#include <camel/camel.h>
#include <camel/camel-session.h>
#include <camel/camel-file-utils.h>

#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>

#define EM_MIGRATE_SESSION_TYPE     (em_migrate_session_get_type ())
#define EM_MIGRATE_SESSION(obj)     (CAMEL_CHECK_CAST((obj), EM_MIGRATE_SESSION_TYPE, EMMigrateSession))
#define EM_MIGRATE_SESSION_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), EM_MIGRATE_SESSION_TYPE, EMMigrateSessionClass))
#define EM_MIGRATE_IS_SESSION(o)    (CAMEL_CHECK_TYPE((o), EM_MIGRATE_SESSION_TYPE))

typedef struct _EMMigrateSession {
    CamelSession parent_object;
    
    CamelStore *store;   /* new folder tree store */
    char *srcdir;        /* old folder tree path */
} EMMigrateSession;

typedef struct _EMMigrateSessionClass {
    CamelSessionClass parent_class;
    
} EMMigrateSessionClass;

CamelType em_migrate_session_get_type (void);
CamelSession *em_migrate_session_new (const char *path);

static void
class_init (EMMigrateSessionClass *klass)
{
    ;
}

CamelType
em_migrate_session_get_type (void)
{
    static CamelType type = CAMEL_INVALID_TYPE;
    
    if (type == CAMEL_INVALID_TYPE) {
        type = camel_type_register (
            camel_session_get_type (),
            "EMMigrateSession",
            sizeof (EMMigrateSession),
            sizeof (EMMigrateSessionClass),
            (CamelObjectClassInitFunc) class_init,
            NULL,
            NULL,
            NULL);
    }
    
    return type;
}

CamelSession *
em_migrate_session_new (const char *path)
{
    CamelSession *session;
    
    session = CAMEL_SESSION (camel_object_new (EM_MIGRATE_SESSION_TYPE));
    
    camel_session_construct (session, path);
    
    return session;
}

static gboolean
is_mail_folder (const char *metadata)
{
    xmlNodePtr node;
    xmlDocPtr doc;
    char *type;
    
    if (!(doc = xmlParseFile (metadata))) {
        g_warning ("Cannot parse `%s'", metadata);
        return FALSE;
    }
    
    if (!(node = xmlDocGetRootElement (doc))) {
        g_warning ("`%s' corrupt: document contains no root node", metadata);
        xmlFreeDoc (doc);
        return FALSE;
    }
    
    if (!node->name || strcmp (node->name, "efolder") != 0) {
        g_warning ("`%s' corrupt: root node is not 'efolder'", metadata);
        xmlFreeDoc (doc);
        return FALSE;
    }
    
    node = node->children;
    while (node != NULL) {
        if (node->name && !strcmp (node->name, "type")) {
            type = xmlNodeGetContent (node);
            if (!strcmp (type, "mail")) {
                xmlFreeDoc (doc);
                xmlFree (type);
                
                return TRUE;
            }
            
            xmlFree (type);
            
            break;
        }
        
        node = node->next;
    }
    
    xmlFreeDoc (doc);
    
    return FALSE;
}

static CamelStore *
get_local_store (CamelSession *session, const char *dirname, const char *metadata, char **namep, int *index, CamelException *ex)
{
    char *protocol, *name, *buf;
    CamelStore *store;
    struct stat st;
    xmlNodePtr node;
    xmlDocPtr doc;
    
    if (stat (metadata, &st) == -1 || !S_ISREG (st.st_mode)) {
        camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, "`%s' is not a regular file", metadata);
        return NULL;
    }
    
    if (!(doc = xmlParseFile (metadata))) {
        camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, "cannot parse `%s'", metadata);
        return NULL;
    }
    
    if (!(node = xmlDocGetRootElement (doc)) || strcmp (node->name, "folderinfo") != 0) {
        camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, "`%s' is malformed", metadata);
        xmlFreeDoc (doc);
        return NULL;
    }
    
    node = node->children;
    while (node != NULL) {
        if (node->name && !strcmp (node->name, "folder")) {
            protocol = xmlGetProp (node, "type");
            name = xmlGetProp (node, "name");
            buf = xmlGetProp (node, "index");
            if (buf != NULL) {
                *index = atoi (buf);
                xmlFree (buf);
            } else {
                *index = 0;
            }
            
            xmlFreeDoc (doc);
            
            buf = g_strdup_printf ("%s:%s", protocol, dirname);
            xmlFree (protocol);
            
            if ((store = camel_session_get_store (session, buf, ex)))
                *namep = g_strdup (name);
            else
                *namep = NULL;
            
            xmlFree (name);
            
            return store;
        }
        
        node = node->next;
    }
    
    xmlFreeDoc (doc);
    
    camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM, "`%s' does not contain needed info", metadata);
    
    return NULL;
}

static void
em_migrate_dir (EMMigrateSession *session, const char *dirname, const char *full_name)
{
    guint32 flags = CAMEL_STORE_FOLDER_CREATE;
    CamelFolder *old_folder, *new_folder;
    CamelStore *local_store;
    struct dirent *dent;
    CamelException ex;
    char *path, *name;
    GPtrArray *uids;
    struct stat st;
    int index;
    DIR *dir;
    
    path = g_strdup_printf ("%s/folder-metadata.xml", dirname);
    if (stat (path, &st) == -1 || !S_ISREG (st.st_mode)) {
        g_free (path);
        return;
    }
    
    if (!is_mail_folder (path)) {
        g_free (path);
        
        goto try_subdirs;
    }
    
    g_free (path);
    
    camel_exception_init (&ex);
    
    /* get old store & folder */
    path = g_strdup_printf ("%s/local-metadata.xml", dirname);
    if (!(local_store = get_local_store ((CamelSession *) session, dirname, path, &name, &index, &ex))) {
        g_warning ("error opening old store for `%s': %s", full_name, ex.desc);
        camel_exception_clear (&ex);
        g_free (path);
        
        /* try subfolders anyway? */
        goto try_subdirs;
    }
    
    g_free (path);
    
    if (!(old_folder = camel_store_get_folder (local_store, name, 0, &ex))) {
        g_warning ("error opening old folder `%s': %s", full_name, ex.desc);
        camel_object_unref (local_store);
        camel_exception_clear (&ex);
        g_free (name);
        
        /* try subfolders anyway? */
        goto try_subdirs;
    }
    
    g_free (name);
    
    flags |= (index ? CAMEL_STORE_FOLDER_BODY_INDEX : 0);
    if (!(new_folder = camel_store_get_folder (session->store, full_name, flags, &ex))) {
        g_warning ("error creating new mbox folder `%s': %s", full_name, ex.desc);
        camel_object_unref (local_store);
        camel_object_unref (old_folder);
        camel_exception_clear (&ex);
        
        /* try subfolders anyway? */
        goto try_subdirs;
    }
    
    uids = camel_folder_get_uids (old_folder);
    camel_folder_transfer_messages_to (old_folder, uids, new_folder, NULL, FALSE, &ex);
    camel_folder_free_uids (old_folder, uids);
    
    if (camel_exception_is_set (&ex)) {
        g_warning ("error migrating folder `%s': %s", full_name, ex.desc);
        camel_object_unref (local_store);
        camel_object_unref (old_folder);
        camel_object_unref (new_folder);
        camel_exception_clear (&ex);
        
        /* try subfolders anyway? */
        goto try_subdirs;
    }
    
    /*camel_object_unref (local_store);*/
    camel_object_unref (old_folder);
    camel_object_unref (new_folder);
    
 try_subdirs:
    
    path = g_strdup_printf ("%s/subfolders", dirname);
    if (stat (path, &st) == -1 || !S_ISDIR (st.st_mode)) {
        g_free (path);
        return;
    }
    
    if (!(dir = opendir (path))) {
        g_warning ("cannot open `%s': %s", path, strerror (errno));
        g_free (path);
        return;
    }
    
    while ((dent = readdir (dir))) {
        char *full_path;
        
        if (dent->d_name[0] == '.')
            continue;
        
        full_path = g_strdup_printf ("%s/%s", path, dent->d_name);
        if (stat (full_path, &st) == -1 || !S_ISDIR (st.st_mode)) {
            g_free (full_path);
            continue;
        }
        
        name = g_strdup_printf ("%s/%s", full_name, dent->d_name);
        em_migrate_dir (session, full_path, name);
        g_free (full_path);
        g_free (name);
    }
    
    closedir (dir);
    
    g_free (path);
}

static void
em_migrate (EMMigrateSession *session)
{
    struct dirent *dent;
    struct stat st;
    DIR *dir;
    
    if (!(dir = opendir (session->srcdir))) {
        g_warning ("cannot open `%s': %s", session->srcdir, strerror (errno));
        return;
    }
    
    while ((dent = readdir (dir))) {
        char *full_path;
        
        if (dent->d_name[0] == '.')
            continue;
        
        full_path = g_strdup_printf ("%s/%s", session->srcdir, dent->d_name);
        if (stat (full_path, &st) == -1 || !S_ISDIR (st.st_mode)) {
            g_free (full_path);
            continue;
        }
        
        em_migrate_dir (session, full_path, dent->d_name);
        g_free (full_path);
    }
    
    closedir (dir);
}

int main (int argc, char **argv)
{
    EMMigrateSession *session;
    CamelException ex;
    struct stat st;
    char *path;
    
    g_thread_init (NULL);
    
    path = g_strdup_printf ("%s/.evolution/mail", g_get_home_dir ());
    if (stat (path, &st) == -1) {
        if (errno != ENOENT || camel_mkdir (path, 0777) == -1) {
            g_warning ("Failed to create directory `%s': %s", path, strerror (errno));
            g_free (path);
            return -1;
        }
    }
    
    camel_init (path, TRUE);
    session = (EMMigrateSession *) em_migrate_session_new (path);
    g_free (path);
    
    session->srcdir = g_strdup_printf ("%s/evolution/local", g_get_home_dir ());
    
    path = g_strdup_printf ("mbox:%s/.evolution/mail/local", g_get_home_dir ());
    if (stat (path + 5, &st) == -1) {
        if (errno != ENOENT || camel_mkdir (path + 5, 0777) == -1) {
            g_warning ("Failed to create directory `%s': %s", path + 5, strerror (errno));
            g_free (session->srcdir);
            camel_object_unref (session);
            g_free (path);
            return -1;
        }
    }
    
    camel_exception_init (&ex);
    if (!(session->store = camel_session_get_store ((CamelSession *) session, path, &ex))) {
        g_warning ("Failed to open store for `%s': %s", path, ex.desc);
        g_free (session->srcdir);
        camel_object_unref (session);
        camel_exception_clear (&ex);
        g_free (path);
        return -1;
    }
    g_free (path);
    
    em_migrate (session);
    
    camel_object_unref (session->store);
    g_free (session->srcdir);
    
    camel_object_unref (session);
    
    return 0;
}