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-rw-r--r--mail/mail-mlist-magic.c262
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diff --git a/mail/mail-mlist-magic.c b/mail/mail-mlist-magic.c
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--- a/mail/mail-mlist-magic.c
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-/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
-/* mail-mlist-magic.c
- *
- * Copyright (C) 2000 Helix Code, Inc.
- *
- * 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.
- *
- * Author: Ettore Perazzoli
- */
-
-/* Procmail-style magic mail rules for mailing lists: (from Joakim's own
- `.procmailrc'.)
-
- :0:
- * ^Sender: owner-\/[^@]+
- lists/$MATCH
-
- :0:
- * ^X-BeenThere: \/[^@]+
- lists/$MATCH
-
- :0:
- * ^Delivered-To: mailing list \/[^@]+
- lists/$MATCH
-
- :0:
- * X-Mailing-List: <\/[^@]+
- lists/$MATCH
-
- :0:
- * X-Loop: \/[^@]+
- lists/$MATCH
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include <ctype.h>
-
-#include "camel.h"
-
-#include "mail-mlist-magic.h"
-
-
-/* Utility functions. */
-
-static char *
-extract_until_at_sign (const char *s)
-{
- const char *at_sign;
-
- at_sign = strchr (s, '@');
- if (at_sign == NULL)
- return g_strdup (s);
-
- if (at_sign == s)
- return NULL;
-
- return g_strndup (s, at_sign - s);
-}
-
-static const char *
-get_header (CamelMimeMessage *message,
- const char *header_name)
-{
- const char *value;
-
- value = camel_medium_get_header (CAMEL_MEDIUM (message), header_name);
- if (value == NULL)
- return NULL;
-
- /* FIXME: Correct? */
- while (isspace ((int) *value))
- value++;
-
- return value;
-}
-
-
-/* The checks. */
-
-/* ^Sender: owner-\/[^@]+ */
-static char *
-check_sender (CamelMimeMessage *message,
- const char **header_name_return,
- char **header_value_return)
-{
- const char *value;
-
- value = get_header (message, "Sender");
- if (value == NULL)
- return NULL;
-
- if (strncmp (value, "owner-", 6) != 0)
- return NULL;
-
- if (value[6] == '\0' || value[6] == '@')
- return NULL;
-
- if (header_name_return != NULL)
- *header_name_return = "Sender";
- if (header_value_return != NULL)
- *header_value_return = g_strdup (value);
- return extract_until_at_sign (value + 6);
-}
-
-/* ^X-BeenThere: \/[^@]+ */
-static char *
-check_x_been_there (CamelMimeMessage *message,
- const char **header_name_return,
- char **header_value_return)
-{
- const char *value;
-
- value = get_header (message, "X-BeenThere");
- if (value == NULL || *value == '@')
- return NULL;
-
- if (header_name_return != NULL)
- *header_name_return = "X-BeenThere";
- if (header_value_return != NULL)
- *header_value_return = g_strdup (value);
-
- return extract_until_at_sign (value);
-}
-
-/* ^Delivered-To: mailing list \/[^@]+ */
-static char *
-check_delivered_to (CamelMimeMessage *message,
- const char **header_name_return,
- char **header_value_return)
-{
- const char *value;
-
- value = get_header (message, "Delivered-To");
- if (value == NULL)
- return NULL;
-
- /* FIXME uh? */
- if (strncmp (value, "mailing list ", 13) != 0)
- return NULL;
-
- if (value[13] == '\0' || value[13] == '@')
- return NULL;
-
- if (header_name_return != NULL)
- *header_name_return = "Delivered-To";
- if (header_value_return != NULL)
- *header_value_return = g_strdup (value);
- return extract_until_at_sign (value + 13);
-}
-
-/* X-Mailing-List: <\/[^@]+ */
-static char *
-check_x_mailing_list (CamelMimeMessage *message,
- const char **header_name_return,
- char **header_value_return)
-{
- const char *value;
- int value_length;
-
- value = get_header (message, "X-Mailing-List");
- if (value == NULL)
- return NULL;
-
- if (value[0] != '<' || value[1] == '\0' || value[1] == '@')
- return NULL;
-
- value_length = strlen (value);
- if (value[value_length - 1] != '>')
- return NULL;
-
- if (header_name_return != NULL)
- *header_name_return = "X-Mailing-List";
- if (header_value_return != NULL)
- *header_value_return = g_strdup (value);
- return extract_until_at_sign (value + 1);
-}
-
-/* X-Loop: \/[^@]+ */
-static char *
-check_x_loop (CamelMimeMessage *message,
- const char **header_name_return,
- char **header_value_return)
-{
- const char *value;
-
- value = get_header (message, "X-Loop");
- if (value == NULL)
- return NULL;
-
- if (*value == '\0' || *value == '@')
- return NULL;
-
- if (header_name_return != NULL)
- *header_name_return = "X-Loop";
- if (header_value_return != NULL)
- *header_value_return = g_strdup (value);
-
- return extract_until_at_sign (value);
-}
-
-
-/**
- * mail_mlist_magic_detect_list:
- * @message:
- * @header_name_return:
- * @header_value_return:
- *
- * Detect if message was delivered by a mailing list.
- *
- * Return value: The name of the mailing list, if the message appears to be
- * sent from a mailing list. NULL otherwise.
- **/
-char *
-mail_mlist_magic_detect_list (CamelMimeMessage *message,
- const char **header_name_return,
- char **header_value_return)
-{
- char *list_name;
-
- g_return_val_if_fail (message != NULL, NULL);
- g_return_val_if_fail (CAMEL_IS_MIME_MESSAGE (message), NULL);
-
- list_name = check_sender (message, header_name_return, header_value_return);
- if (list_name != NULL)
- return list_name;
-
- list_name = check_x_been_there (message, header_name_return, header_value_return);
- if (list_name != NULL)
- return list_name;
-
- list_name = check_delivered_to (message, header_name_return, header_value_return);
- if (list_name != NULL)
- return list_name;
-
- list_name = check_x_mailing_list (message, header_name_return, header_value_return);
- if (list_name != NULL)
- return list_name;
-
- list_name = check_x_loop (message, header_name_return, header_value_return);
- if (list_name != NULL)
- return list_name;
-
- return NULL;
-}
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