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12471842 PL |
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 | */ | |
8bd743a8 BH |
22 | #ifndef PIPEBACKEND_HH |
23 | #define PIPEBACKEND_HH | |
24 | ||
25 | #include <string> | |
26 | #include <map> | |
27 | #include <sys/types.h> | |
dd7da6cd | 28 | |
8bd743a8 | 29 | |
10f4eea8 | 30 | #include "pdns/namespaces.hh" |
3ee84c3f | 31 | #include "pdns/misc.hh" |
8bd743a8 BH |
32 | |
33 | ||
34 | /** The CoWrapper class wraps around a coprocess and restarts it if needed. | |
35 | It may also send out pings and expect banners */ | |
36 | class CoWrapper | |
37 | { | |
38 | public: | |
783b9f8e | 39 | CoWrapper(const string &command, int timeout, int abiVersion); |
f7a23c1c | 40 | ~CoWrapper(); |
8bd743a8 BH |
41 | void send(const string &line); |
42 | void receive(string &line); | |
43 | private: | |
2f2b0145 | 44 | CoRemote* d_cp; |
8bd743a8 BH |
45 | string d_command; |
46 | void launch(); | |
47 | int d_timeout; | |
4b16334f | 48 | int d_abiVersion; |
8bd743a8 BH |
49 | }; |
50 | ||
51 | class PipeBackend : public DNSBackend | |
52 | { | |
53 | public: | |
54 | PipeBackend(const string &suffix=""); | |
55 | ~PipeBackend(); | |
d57d7155 KM |
56 | void lookup(const QType&, const DNSName& qdomain, DNSPacket *p=0, int zoneId=-1) override; |
57 | bool list(const DNSName& target, int domain_id, bool include_disabled=false) override; | |
58 | bool get(DNSResourceRecord &r) override; | |
59 | string directBackendCmd(const string &query) override; | |
8bd743a8 BH |
60 | static DNSBackend *maker(); |
61 | ||
62 | private: | |
fd378ba9 PL |
63 | void launch(); |
64 | void cleanup(); | |
65 | unique_ptr<CoWrapper> d_coproc; | |
7d173a2a | 66 | DNSName d_qname; |
8bd743a8 BH |
67 | QType d_qtype; |
68 | Regex* d_regex; | |
69 | string d_regexstr; | |
70 | bool d_disavow; | |
4b16334f | 71 | int d_abiVersion; |
8bd743a8 BH |
72 | }; |
73 | ||
74 | ||
75 | #endif | |
76 |