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1 | /* |
2 | * This file is part of PowerDNS or dnsdist. | |
3 | * Copyright -- PowerDNS.COM B.V. and its contributors | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * In addition, for the avoidance of any doubt, permission is granted to | |
10 | * link this program with OpenSSL and to (re)distribute the binaries | |
11 | * produced as the result of such linking. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
21 | */ | |
22 | ||
23 | #pragma once | |
24 | ||
4172a5b2 | 25 | #include "iputils.hh" |
463ec5fd | 26 | |
bde73d5b RG |
27 | struct ProxyProtocolValue |
28 | { | |
29 | std::string content; | |
30 | uint8_t type; | |
c4f2293b RG |
31 | |
32 | bool operator==(const ProxyProtocolValue& rhs) const | |
33 | { | |
34 | return type == rhs.type && content == rhs.content; | |
35 | } | |
6ad3e2e3 RG |
36 | |
37 | enum class Types : uint8_t { PP_TLV_ALPN = 0x01, PP_TLV_SSL = 0x20 }; | |
bde73d5b RG |
38 | }; |
39 | ||
40 | static const size_t s_proxyProtocolMinimumHeaderSize = 16; | |
41 | ||
8c73c703 | 42 | std::string makeLocalProxyHeader(); |
bde73d5b RG |
43 | std::string makeProxyHeader(bool tcp, const ComboAddress& source, const ComboAddress& destination, const std::vector<ProxyProtocolValue>& values); |
44 | ||
45 | /* returns: number of bytes consumed (positive) after successful parse | |
46 | or number of bytes missing (negative) | |
47 | or unfixable parse error (0)*/ | |
448d66d4 | 48 | template<typename Container> ssize_t isProxyHeaderComplete(const Container& header, bool* proxy=nullptr, bool* tcp=nullptr, size_t* addrSizeOut=nullptr, uint8_t* protocolOut=nullptr); |
8c73c703 | 49 | |
bde73d5b RG |
50 | /* returns: number of bytes consumed (positive) after successful parse |
51 | or number of bytes missing (negative) | |
52 | or unfixable parse error (0)*/ | |
448d66d4 | 53 | template<typename Container> ssize_t parseProxyHeader(const Container& header, bool& proxy, ComboAddress& source, ComboAddress& destination, bool& tcp, std::vector<ProxyProtocolValue>& values); |