2006-02-27 [colin] 2.0.0cvs85
[claws.git] / src / plugins / spamassassin / spamassassin.c
index dfee750fe01d8113565603a5b42d048654926bec..191c7130fa0245fcd8e2fe4c0a36155f98cacc01 100644 (file)
@@ -1,6 +1,6 @@
 /*
  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
- * Copyright (C) 1999-2003 Hiroyuki Yamamoto and the Sylpheed-Claws Team
+ * Copyright (C) 1999-2006 Hiroyuki Yamamoto and the Sylpheed-Claws Team
  *
  * 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
@@ -14,7 +14,7 @@
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #ifdef HAVE_CONFIG_H
 
 #include "defs.h"
 
+#include <sys/types.h>
+#include <sys/wait.h>
+
 #include <glib.h>
+#include <glib/gi18n.h>
 
 #if HAVE_LOCALE_H
 #  include <locale.h>
 #endif
 
+#include "common/sylpheed.h"
+#include "common/version.h"
 #include "plugin.h"
 #include "common/utils.h"
 #include "hooks.h"
 #include "folder.h"
 #include "prefs.h"
 #include "prefs_gtk.h"
-#include "intl.h"
 
 #include "libspamc.h"
 #include "spamassassin.h"
+#include "log.h"
+#include "prefs_common.h"
 
 #ifdef HAVE_SYSEXITS_H
 #include <sysexits.h>
 #include <pwd.h>
 #endif
 
+enum {
+    CHILD_RUNNING = 1 << 0,
+    TIMEOUT_RUNNING = 1 << 1,
+};
+
 static guint hook_id;
 static int flags = SPAMC_RAW_MODE | SPAMC_SAFE_FALLBACK | SPAMC_CHECK_ONLY;
 static gchar *username = NULL;
+static MessageCallback message_callback;
 
 static SpamAssassinConfig config;
 
 static PrefParam param[] = {
-       {"enable", "FALSE", &config.enable, P_BOOL,
+       {"transport", "0", &config.transport, P_INT,
         NULL, NULL, NULL},
        {"hostname", "localhost", &config.hostname, P_STRING,
         NULL, NULL, NULL},
        {"port", "783", &config.port, P_INT,
         NULL, NULL, NULL},
-       {"max_size", "250", &config.max_size, P_INT,
+       {"socket", "", &config.socket, P_STRING,
         NULL, NULL, NULL},
        {"receive_spam", "TRUE", &config.receive_spam, P_BOOL,
         NULL, NULL, NULL},
        {"save_folder", NULL, &config.save_folder, P_STRING,
         NULL, NULL, NULL},
+       {"max_size", "250", &config.max_size, P_INT,
+        NULL, NULL, NULL},
+       {"timeout", "30", &config.timeout, P_INT,
+        NULL, NULL, NULL},
 
        {NULL, NULL, NULL, P_OTHER, NULL, NULL, NULL}
 };
 
-static gboolean mail_filtering_hook(gpointer source, gpointer data)
+gboolean timeout_func(gpointer data)
 {
-       MailFilteringData *mail_filtering_data = (MailFilteringData *) source;
-       MsgInfo *msginfo = mail_filtering_data->msginfo;
-       gboolean is_spam = FALSE;
-       FILE *fp = NULL;
+       gint *running = (gint *) data;
+
+       if (*running & CHILD_RUNNING)
+               return TRUE;
+
+       *running &= ~TIMEOUT_RUNNING;
+       return FALSE;
+}
+
+static gboolean msg_is_spam(FILE *fp)
+{
+       struct transport trans;
        struct message m;
-       gchar *oldlocale = NULL;
-       struct sockaddr addr;
-       int ret;
+       gboolean is_spam = FALSE;
 
-       if (!config.enable)
+       transport_init(&trans);
+       switch (config.transport) {
+       case SPAMASSASSIN_TRANSPORT_LOCALHOST:
+               trans.type = TRANSPORT_LOCALHOST;
+               trans.port = config.port;
+               break;
+       case SPAMASSASSIN_TRANSPORT_TCP:
+               trans.type = TRANSPORT_TCP;
+               trans.hostname = config.hostname;
+               trans.port = config.port;
+               break;
+       case SPAMASSASSIN_TRANSPORT_UNIX:
+               trans.type = TRANSPORT_UNIX;
+               trans.socketpath = config.socket;
+               break;
+       default:
                return FALSE;
+       }
 
-       debug_print("Filtering message %d\n", msginfo->msgnum);
-
-       if (lookup_host(config.hostname, config.port, &addr) != EX_OK) {
-               debug_print("failed to look up spamd host\n");
+       if (transport_setup(&trans, flags) != EX_OK) {
+               log_error("Spamassassin plugin couldn't connect to spamd.\n");
+               debug_print("failed to setup transport\n");
                return FALSE;
        }
 
        m.type = MESSAGE_NONE;
        m.max_len = config.max_size * 1024;
-       m.timeout = 30;
-
-       if ((fp = procmsg_open_message(msginfo)) == NULL) {
-               debug_print("failed to open message file\n");
-               return FALSE;
-       }
+       m.timeout = config.timeout;
 
        if (message_read(fileno(fp), flags, &m) != EX_OK) {
                debug_print("failed to read message\n");
-               fclose(fp);
                message_cleanup(&m);
                return FALSE;
        }
 
-       if ((ret = message_filter(&addr, username, flags, &m)) != EX_OK) {
+       if (message_filter(&trans, username, flags, &m) != EX_OK) {
                debug_print("filtering the message failed\n");
-               fclose(fp);
                message_cleanup(&m);
                return FALSE;
        }
@@ -134,11 +165,68 @@ static gboolean mail_filtering_hook(gpointer source, gpointer data)
                is_spam = TRUE;
 
        message_cleanup(&m);
+
+       return is_spam;
+}
+
+static gboolean mail_filtering_hook(gpointer source, gpointer data)
+{
+       MailFilteringData *mail_filtering_data = (MailFilteringData *) source;
+       MsgInfo *msginfo = mail_filtering_data->msginfo;
+       gboolean is_spam = FALSE;
+       FILE *fp = NULL;
+       int pid = 0;
+       int status;
+
+       if (config.transport == SPAMASSASSIN_DISABLED) {
+               log_error("Spamassassin plugin is disabled by its preferences.\n");
+               return FALSE;
+       }
+       debug_print("Filtering message %d\n", msginfo->msgnum);
+       if (message_callback != NULL)
+               message_callback(_("SpamAssassin: filtering message..."));
+
+       if ((fp = procmsg_open_message(msginfo)) == NULL) {
+               debug_print("failed to open message file\n");
+               return FALSE;
+       }
+
+       pid = fork();
+       if (pid == 0) {
+               _exit(msg_is_spam(fp) ? 1 : 0);
+       } else {
+               gint running = 0;
+
+               running |= CHILD_RUNNING;
+
+               g_timeout_add(50, timeout_func, &running);
+               running |= TIMEOUT_RUNNING;
+
+               while(running & CHILD_RUNNING) {
+                       int ret;
+
+                       ret = waitpid(pid, &status, WNOHANG);
+                       if (ret == pid) {
+                               if (WIFEXITED(status)) {
+                                       running &= ~CHILD_RUNNING;
+                                       is_spam = WEXITSTATUS(status) == 1 ? TRUE : FALSE;
+                               }
+                       } if (ret < 0) {
+                               running &= ~CHILD_RUNNING;
+                       } /* ret == 0 continue */
+           
+                       g_main_iteration(TRUE);
+               }
+
+               while (running & TIMEOUT_RUNNING)
+                       g_main_iteration(TRUE);
+       }
+
        fclose(fp);
 
        if (is_spam) {
                debug_print("message is spam\n");
-                           
+               procmsg_msginfo_set_flags(msginfo, MSG_SPAM, 0);
                if (config.receive_spam) {
                        FolderItem *save_folder;
 
@@ -148,14 +236,17 @@ static gboolean mail_filtering_hook(gpointer source, gpointer data)
                                save_folder = folder_get_default_trash();
 
                        procmsg_msginfo_unset_flags(msginfo, ~0, 0);
+                       procmsg_msginfo_set_flags(msginfo, MSG_SPAM, 0);
                        folder_item_move_msg(save_folder, msginfo);
                } else {
                        folder_item_remove_msg(msginfo->folder, msginfo->msgnum);
                }
 
                return TRUE;
+       } else {
+               debug_print("message is ham\n");
+               procmsg_msginfo_unset_flags(msginfo, MSG_SPAM, 0);
        }
-       
        return FALSE;
 }
 
@@ -164,6 +255,56 @@ SpamAssassinConfig *spamassassin_get_config(void)
        return &config;
 }
 
+void spamassassin_learn(MsgInfo *msginfo, GSList *msglist, gboolean spam)
+{
+       gchar *cmd = NULL;
+       gchar *file = NULL;
+       gboolean async = FALSE;
+
+       if (msginfo == NULL && msglist == NULL)
+               return;
+
+       if (msginfo) {
+               file = procmsg_get_message_file(msginfo);
+               if (file == NULL)
+                       return;
+               cmd = g_strdup_printf("sa-learn %s %s %s", 
+                       prefs_common.work_offline?"-L":"",
+                       spam?"--spam":"--ham", file);
+       }
+       if (msglist) {
+               GSList *cur;
+               MsgInfo *info;
+               cmd = g_strdup_printf("sa-learn %s %s", 
+                               prefs_common.work_offline?"-L":"",
+                               spam?"--spam":"--ham");
+               for (cur = msglist; cur; cur = cur->next) {
+                       info = (MsgInfo *)cur->data;
+                       gchar *tmpcmd = NULL;
+                       gchar *tmpfile = get_tmp_file();
+                       
+                       if (tmpfile &&
+                           copy_file(procmsg_get_message_file(info), tmpfile, TRUE) == 0) {                    
+                               tmpcmd = g_strconcat
+                                       (cmd, " ", tmpfile, NULL);
+                               g_free(cmd);
+                               cmd = tmpcmd;
+                       }
+                       if (tmpfile)
+                               g_free(tmpfile);
+               }
+               async = TRUE;
+       }
+       if (cmd == NULL)
+               return;
+       debug_print("%s\n",cmd);
+       /* only run async if we have a list, or we could end up
+        * forking lots of perl processes and bury the machine */
+       execute_command_line(cmd, async);
+       g_free(cmd);
+       
+}
+
 void spamassassin_save_config(void)
 {
        PrefFile *pfile;
@@ -187,25 +328,57 @@ void spamassassin_save_config(void)
        prefs_file_close(pfile);
 }
 
+void spamassassin_set_message_callback(MessageCallback callback)
+{
+       message_callback = callback;
+}
+
 gint plugin_init(gchar **error)
 {
+       gchar *rcpath;
+
+       if ((sylpheed_get_version() > VERSION_NUMERIC)) {
+               *error = g_strdup("Your version of Sylpheed-Claws is newer than the version the SpamAssassin plugin was built with");
+               return -1;
+       }
+
+       if ((sylpheed_get_version() < MAKE_NUMERIC_VERSION(0, 9, 3, 86))) {
+               *error = g_strdup("Your version of Sylpheed-Claws is too old for the SpamAssassin plugin");
+               return -1;
+       }
+
        hook_id = hooks_register_hook(MAIL_FILTERING_HOOKLIST, mail_filtering_hook, NULL);
        if (hook_id == -1) {
                *error = g_strdup("Failed to register mail filtering hook");
                return -1;
        }
 
-       username = g_get_user_name();
+       username = (gchar*)g_get_user_name();
        if (username == NULL) {
+               hooks_unregister_hook(MAIL_FILTERING_HOOKLIST, hook_id);
                *error = g_strdup("Failed to get username");
                return -1;
        }
 
        prefs_set_default(param);
-       prefs_read_config(param, "SpamAssassin", COMMON_RC);
-
+       rcpath = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S, COMMON_RC, NULL);
+       prefs_read_config(param, "SpamAssassin", rcpath, NULL);
+       g_free(rcpath);
+       spamassassin_gtk_init();
+               
        debug_print("Spamassassin plugin loaded\n");
 
+       if (config.transport == SPAMASSASSIN_DISABLED) {
+               log_error("Spamassassin plugin is loaded but disabled by its preferences.\n");
+       }
+       
+       if (config.transport != SPAMASSASSIN_DISABLED &&
+           config.transport != SPAMASSASSIN_TRANSPORT_TCP) {
+               procmsg_register_spam_learner(spamassassin_learn);
+               procmsg_spam_set_folder(config.save_folder);
+       } else if (config.transport == SPAMASSASSIN_TRANSPORT_TCP)
+               debug_print("disabling learner as it only works locally\n");
+
        return 0;
        
 }
@@ -215,7 +388,9 @@ void plugin_done(void)
        hooks_unregister_hook(MAIL_FILTERING_HOOKLIST, hook_id);
        g_free(config.hostname);
        g_free(config.save_folder);
-
+       spamassassin_gtk_done();
+       procmsg_unregister_spam_learner(spamassassin_learn);
+       procmsg_spam_set_folder(NULL);
        debug_print("Spamassassin plugin unloaded\n");
 }
 
@@ -226,20 +401,28 @@ const gchar *plugin_name(void)
 
 const gchar *plugin_desc(void)
 {
-       return _("This plugin checks all messages that are received from a POP "
-                "account for spam using a SpamAssassin server. You will need "
-                "a SpamAssassin Server (spamd) running somewhere.\n"
+       return _("This plugin checks all messages that are received from an "
+                "IMAP, LOCAL or POP account for spam using a SpamAssassin "
+                "server. You will need a SpamAssassin Server (spamd) running "
+                "somewhere.\n"
                 "\n"
                 "When a message is identified as spam it can be deleted or "
                 "saved into a special folder.\n"
-                "\n"
-                "This plugin only contains the actual function for filtering "
-                "and deleting or moving the message. You probably want to load "
-                "a User Interface plugin too, otherwise you will have to "
-                "manually write the plugin configuration.\n");
+                "\n");
 }
 
 const gchar *plugin_type(void)
 {
-       return "Common";
+       return "GTK2";
+}
+
+const gchar *plugin_licence(void)
+{
+       return "GPL";
 }
+
+const gchar *plugin_version(void)
+{
+       return VERSION;
+}
+