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/*-
* Copyright 2016 Vsevolod Stakhov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SRC_LIBMIME_MIME_HEADERS_H_
#define SRC_LIBMIME_MIME_HEADERS_H_
#include "config.h"
#include "libutil/mem_pool.h"
#include "libutil/addr.h"
#ifdef __cplusplus
extern "C" {
#endif
struct rspamd_task;
enum rspamd_rfc2047_encoding {
RSPAMD_RFC2047_QP = 0,
RSPAMD_RFC2047_BASE64,
};
enum rspamd_mime_header_flags {
RSPAMD_HEADER_GENERIC = 0u,
RSPAMD_HEADER_RECEIVED = 1u << 0u,
RSPAMD_HEADER_TO = 1u << 2u,
RSPAMD_HEADER_CC = 1u << 3u,
RSPAMD_HEADER_BCC = 1u << 4u,
RSPAMD_HEADER_FROM = 1u << 5u,
RSPAMD_HEADER_MESSAGE_ID = 1u << 6u,
RSPAMD_HEADER_SUBJECT = 1u << 7u,
RSPAMD_HEADER_RETURN_PATH = 1u << 8u,
RSPAMD_HEADER_DELIVERED_TO = 1u << 9u,
RSPAMD_HEADER_SENDER = 1u << 10u,
RSPAMD_HEADER_RCPT = 1u << 11u,
RSPAMD_HEADER_UNIQUE = 1u << 12u,
RSPAMD_HEADER_EMPTY_SEPARATOR = 1u << 13u,
RSPAMD_HEADER_TAB_SEPARATED = 1u << 14u,
};
struct rspamd_mime_header {
gchar *name;
gchar *value;
const gchar *raw_value; /* As it is in the message (unfolded and unparsed) */
gsize raw_len;
guint order;
int flags; /* see enum rspamd_mime_header_flags */
gchar *separator;
gchar *decoded;
struct rspamd_mime_header *prev, *next; /* Headers with the same name */
struct rspamd_mime_header *ord_prev, *ord_next; /* Overall order of headers */
};
enum rspamd_received_type {
RSPAMD_RECEIVED_SMTP = 0,
RSPAMD_RECEIVED_ESMTP = 1u << 0u,
RSPAMD_RECEIVED_ESMTPA = 1u << 1u,
RSPAMD_RECEIVED_ESMTPS = 1u << 2u,
RSPAMD_RECEIVED_ESMTPSA = 1u << 3u,
RSPAMD_RECEIVED_LMTP = 1u << 4u,
RSPAMD_RECEIVED_IMAP = 1u << 5u,
RSPAMD_RECEIVED_LOCAL = 1u << 6u,
RSPAMD_RECEIVED_HTTP = 1u << 7u,
RSPAMD_RECEIVED_MAPI = 1u << 8u,
RSPAMD_RECEIVED_UNKNOWN = 1u << 9u,
RSPAMD_RECEIVED_FLAG_ARTIFICIAL = (1u << 10u),
RSPAMD_RECEIVED_FLAG_SSL = (1u << 11u),
RSPAMD_RECEIVED_FLAG_AUTHENTICATED = (1u << 12u),
};
struct received_header {
const gchar *from_hostname;
const gchar *from_ip;
const gchar *real_hostname;
const gchar *real_ip;
const gchar *by_hostname;
const gchar *for_mbox;
rspamd_inet_addr_t *addr;
struct rspamd_mime_header *hdr;
time_t timestamp;
gint flags; /* See enum rspamd_received_type */
struct received_header *prev, *next;
};
/**
* Process headers and store them in `target`
* @param task
* @param target
* @param in
* @param len
* @param check_newlines
*/
void rspamd_mime_headers_process (struct rspamd_task *task,
GHashTable *target,
struct rspamd_mime_header **order_ptr,
const gchar *in, gsize len,
gboolean check_newlines);
/**
* Perform rfc2047 decoding of a header
* @param pool
* @param in
* @param inlen
* @return
*/
gchar *rspamd_mime_header_decode (rspamd_mempool_t *pool, const gchar *in,
gsize inlen, gboolean *invalid_utf);
/**
* Encode mime header if needed
* @param in
* @param len
* @return newly allocated encoded header
*/
gchar *rspamd_mime_header_encode (const gchar *in, gsize len);
/**
* Generate new unique message id
* @param fqdn
* @return
*/
gchar *rspamd_mime_message_id_generate (const gchar *fqdn);
#ifdef __cplusplus
}
#endif
#endif /* SRC_LIBMIME_MIME_HEADERS_H_ */
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