1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/*-
* Copyright 2021 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 RSPAMD_RECEIVED_HXX
#define RSPAMD_RECEIVED_HXX
#pragma once
#include "config.h"
#include "received.h"
#include "mime_string.hxx"
#include "libmime/email_addr.h"
#include "libserver/task.h"
#include <vector>
#include <string_view>
#include <utility>
#include <optional>
namespace rspamd::mime {
static inline auto
received_char_filter(UChar32 uc) -> UChar32
{
if (u_isprint(uc)) {
return u_tolower(uc);
}
return 0;
}
enum class received_flags {
DEFAULT = 0,
SMTP = 1u << 0u,
ESMTP = 1u << 1u,
ESMTPA = 1u << 2u,
ESMTPS = 1u << 3u,
ESMTPSA = 1u << 4u,
LMTP = 1u << 5u,
IMAP = 1u << 6u,
LOCAL = 1u << 7u,
HTTP = 1u << 8u,
MAPI = 1u << 9u,
UNKNOWN = 1u << 10u,
ARTIFICIAL = (1u << 11u),
SSL = (1u << 12u),
AUTHENTICATED = (1u << 13u),
};
#define RSPAMD_RECEIVED_FLAG_TYPE_MASK (received_flags::SMTP| \
RSPAMD_RECEIVED_ESMTP| \
RSPAMD_RECEIVED_ESMTPA| \
RSPAMD_RECEIVED_ESMTPS| \
RSPAMD_RECEIVED_ESMTPSA| \
RSPAMD_RECEIVED_LMTP| \
RSPAMD_RECEIVED_IMAP| \
RSPAMD_RECEIVED_LOCAL| \
RSPAMD_RECEIVED_HTTP| \
RSPAMD_RECEIVED_MAPI| \
RSPAMD_RECEIVED_UNKNOWN)
constexpr received_flags operator |(received_flags lhs, received_flags rhs)
{
using ut = std::underlying_type<received_flags>::type;
return static_cast<received_flags>(static_cast<ut>(lhs) | static_cast<ut>(rhs));
}
constexpr received_flags operator |=(received_flags &lhs, const received_flags rhs)
{
using ut = std::underlying_type<received_flags>::type;
lhs = static_cast<received_flags>(static_cast<ut>(lhs) | static_cast<ut>(rhs));
return lhs;
}
constexpr received_flags operator &(received_flags lhs, received_flags rhs)
{
using ut = std::underlying_type<received_flags>::type;
return static_cast<received_flags>(static_cast<ut>(lhs) & static_cast<ut>(rhs));
}
constexpr bool operator !(received_flags fl)
{
return fl == received_flags::DEFAULT;
}
constexpr received_flags received_type_apply_maks(received_flags fl) {
return fl & (received_flags::SMTP|
received_flags::ESMTP|
received_flags::ESMTPA|
received_flags::ESMTPS|
received_flags::ESMTPSA|
received_flags::IMAP|
received_flags::HTTP|
received_flags::LOCAL|
received_flags::MAPI|
received_flags::LMTP);
}
struct received_header {
mime_string from_hostname;
std::string_view from_ip;
mime_string real_hostname;
mime_string real_ip;
mime_string by_hostname;
std::string_view for_mbox;
struct rspamd_email_address *for_addr = nullptr;
rspamd_inet_addr_t *addr = nullptr;
struct rspamd_mime_header *hdr = nullptr;
time_t timestamp = 0;
received_flags flags = received_flags::DEFAULT; /* See enum rspamd_received_type */
received_header() noexcept
: from_hostname(received_char_filter),
real_hostname(received_char_filter),
real_ip(received_char_filter),
by_hostname(received_char_filter) {}
~received_header() {
if (for_addr) {
rspamd_email_address_free(for_addr);
}
}
};
class received_header_chain {
public:
explicit received_header_chain(struct rspamd_task *_task) : task(_task) {
headers.reserve(2);
rspamd_mempool_add_destructor(task->task_pool,
received_header_chain::received_header_chain_pool_dtor, this);
}
enum class append_type {
append_tail,
append_head
};
auto new_received(append_type how = append_type::append_tail) -> received_header & {
if (how == append_type::append_tail) {
headers.emplace_back();
return headers.back();
}
else {
headers.insert(std::begin(headers), {});
return headers.front();
}
}
auto get_received(std::size_t nth) -> std::optional<std::reference_wrapper<received_header>>{
if (nth < headers.size()) {
return headers[nth];
}
return std::nullopt;
}
constexpr auto size() const -> std::size_t {
return headers.size();
}
constexpr auto as_vector() const -> const std::vector<received_header>& {
return headers;
}
private:
static auto received_header_chain_pool_dtor(void *ptr) -> void {
delete static_cast<received_header_chain *>(ptr);
}
std::vector<received_header> headers;
struct rspamd_task *task;
};
}
#endif //RSPAMD_RECEIVED_HXX
|
