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92c90b44 BH |
1 | /* |
2 | PowerDNS Versatile Database Driven Nameserver | |
3 | Copyright (C) 2002-2011 PowerDNS.COM BV | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6ca3fa73 | 6 | it under the terms of the GNU General Public License version 2 as |
92c90b44 BH |
7 | published by the Free Software Foundation |
8 | ||
f782fe38 MH |
9 | Additionally, the license of this program contains a special |
10 | exception which allows to distribute the program in binary form when | |
11 | it is linked against OpenSSL. | |
12 | ||
92c90b44 BH |
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 St, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
870a0fe4 AT |
23 | #ifdef HAVE_CONFIG_H |
24 | #include "config.h" | |
25 | #endif | |
92c90b44 BH |
26 | #include "dnsseckeeper.hh" |
27 | #include "dnspacket.hh" | |
28 | #include "namespaces.hh" | |
fa8fd4d2 | 29 | |
92c90b44 | 30 | |
63347c6c | 31 | uint32_t localtime_format_YYYYMMDDSS(time_t t, uint32_t seq) |
6ca3fa73 SB |
32 | { |
33 | struct tm tm; | |
34 | localtime_r(&t, &tm); | |
35 | return | |
36 | (uint32_t)(tm.tm_year+1900) * 1000000u | |
37 | + (uint32_t)(tm.tm_mon + 1) * 10000u | |
38 | + (uint32_t)tm.tm_mday * 100u | |
39 | + seq; | |
40 | } | |
41 | ||
7abbc40f | 42 | bool editSOA(DNSSECKeeper& dk, const DNSName& qname, DNSPacket* dp) |
92c90b44 | 43 | { |
90ba52e0 | 44 | for(auto& rr : dp->getRRS()) { |
45 | if(rr.dr.d_type == QType::SOA && rr.dr.d_name == qname) { | |
92c90b44 | 46 | string kind; |
4192773a | 47 | dk.getSoaEdit(qname, kind); |
aaf95c8a | 48 | return editSOARecord(rr, kind); |
92c90b44 BH |
49 | } |
50 | } | |
51 | return false; | |
52 | } | |
5ba9719b | 53 | |
aaf95c8a | 54 | bool editSOARecord(DNSZoneRecord& rr, const string& kind) { |
d29d5db7 CH |
55 | if(kind.empty()) |
56 | return false; | |
90ba52e0 | 57 | auto src = getRR<SOARecordContent>(rr.dr); |
58 | src->d_st.serial=calculateEditSOA(rr, kind); | |
d29d5db7 | 59 | |
d29d5db7 CH |
60 | return true; |
61 | } | |
5ba9719b | 62 | |
90ba52e0 | 63 | uint32_t calculateEditSOA(const DNSZoneRecord& rr, const string& kind) |
64 | { | |
65 | auto src = getRR<SOARecordContent>(rr.dr); | |
f81291fd | 66 | if(pdns_iequals(kind,"INCEPTION-INCREMENT")) { |
5ba9719b RA |
67 | time_t inception = getStartOfWeek(); |
68 | uint32_t inception_serial = localtime_format_YYYYMMDDSS(inception, 1); | |
69 | uint32_t dont_increment_after = localtime_format_YYYYMMDDSS(inception + 2*86400, 99); | |
70 | ||
90ba52e0 | 71 | if(src->d_st.serial < inception_serial - 1) { /* less than <inceptionday>00 */ |
83609e21 | 72 | return inception_serial; /* return <inceptionday>01 (skipping <inceptionday>00 as possible value) */ |
90ba52e0 | 73 | } else if(src->d_st.serial <= dont_increment_after) { /* >= <inceptionday>00 but <= <inceptionday+2>99 */ |
74 | return (src->d_st.serial + 2); /* "<inceptionday>00" and "<inceptionday>01" are reserved for inception increasing, so increment sd.serial by two */ | |
83609e21 | 75 | } |
5ba9719b | 76 | } |
5ba9719b RA |
77 | else if(pdns_iequals(kind,"INCREMENT-WEEKS")) { |
78 | time_t inception = getStartOfWeek(); | |
90ba52e0 | 79 | return (src->d_st.serial + (inception / (7*86400))); |
5ba9719b RA |
80 | } |
81 | else if(pdns_iequals(kind,"EPOCH")) { | |
82 | return time(0); | |
83 | } | |
84 | else if(pdns_iequals(kind,"INCEPTION-EPOCH")) { | |
eee11292 | 85 | uint32_t inception = getStartOfWeek(); |
90ba52e0 | 86 | if (src->d_st.serial < inception) |
5ba9719b | 87 | return inception; |
5e95e601 | 88 | } else if(!kind.empty()) { |
90ba52e0 | 89 | L<<Logger::Warning<<"SOA-EDIT type '"<<kind<<"' for zone "<<rr.dr.d_name<<" is unknown."<<endl; |
5ba9719b | 90 | } |
90ba52e0 | 91 | return src->d_st.serial; |
92 | } | |
93 | ||
94 | uint32_t calculateEditSOA(const SOAData& sd, const string& kind) | |
95 | { | |
96 | DNSZoneRecord dzr; | |
97 | dzr.dr.d_name=sd.qname; | |
98 | struct soatimes st; | |
99 | st.serial = sd.serial; | |
100 | dzr.dr.d_content = std::make_shared<SOARecordContent>(sd.nameserver, sd.hostmaster, st); | |
101 | return calculateEditSOA(dzr, kind); | |
5ba9719b | 102 | } |
a6448d95 CH |
103 | |
104 | // Used for SOA-EDIT-DNSUPDATE and SOA-EDIT-API. | |
90ba52e0 | 105 | uint32_t calculateIncreaseSOA(DNSZoneRecord& dzr, const string& increaseKind, const string& editKind) { |
106 | auto src = getRR<SOARecordContent>(dzr.dr); | |
a6448d95 CH |
107 | // These only work when SOA-EDIT is set, otherwise fall back to default. |
108 | if (!editKind.empty()) { | |
109 | if (pdns_iequals(increaseKind, "SOA-EDIT-INCREASE")) { | |
90ba52e0 | 110 | uint32_t new_serial = calculateEditSOA(dzr, editKind); |
111 | if (new_serial <= src->d_st.serial) { | |
112 | new_serial = src->d_st.serial + 1; | |
a6448d95 CH |
113 | } |
114 | return new_serial; | |
115 | } | |
116 | else if (pdns_iequals(increaseKind, "SOA-EDIT")) { | |
90ba52e0 | 117 | return calculateEditSOA(dzr, editKind); |
a6448d95 CH |
118 | } |
119 | } | |
120 | ||
121 | if (pdns_iequals(increaseKind, "INCREASE")) { | |
90ba52e0 | 122 | return src->d_st.serial + 1; |
a6448d95 CH |
123 | } |
124 | else if (pdns_iequals(increaseKind, "EPOCH")) { | |
125 | return time(0); | |
126 | } | |
127 | ||
128 | // DEFAULT case | |
129 | time_t now = time(0); | |
130 | struct tm tm; | |
131 | localtime_r(&now, &tm); | |
132 | boost::format fmt("%04d%02d%02d%02d"); | |
133 | string newdate = (fmt % (tm.tm_year + 1900) % (tm.tm_mon + 1) % tm.tm_mday % 1).str(); | |
335da0ba | 134 | uint32_t new_serial = pdns_stou(newdate); |
90ba52e0 | 135 | if (new_serial <= src->d_st.serial) { |
136 | new_serial = src->d_st.serial + 1; | |
a6448d95 CH |
137 | } |
138 | return new_serial; | |
139 | } | |
140 | ||
90ba52e0 | 141 | // Used for SOA-EDIT-DNSUPDATE and SOA-EDIT-API. |
142 | uint32_t calculateIncreaseSOA(SOAData sd, const string& increaseKind, const string& editKind) { | |
143 | DNSZoneRecord dzr; | |
144 | dzr.dr.d_name=sd.qname; | |
145 | struct soatimes st; | |
146 | st.serial = sd.serial; | |
147 | dzr.dr.d_content = std::make_shared<SOARecordContent>(sd.nameserver, sd.hostmaster, st); | |
148 | return calculateIncreaseSOA(dzr, increaseKind, editKind); | |
149 | } | |
150 | ||
151 | ||
152 | ||
a6448d95 CH |
153 | bool increaseSOARecord(DNSResourceRecord& rr, const string& increaseKind, const string& editKind) { |
154 | if (increaseKind.empty()) | |
155 | return false; | |
156 | ||
157 | SOAData sd; | |
158 | fillSOAData(rr.content, sd); | |
159 | sd.serial = calculateIncreaseSOA(sd, increaseKind, editKind); | |
160 | rr.content = serializeSOAData(sd); | |
161 | return true; | |
162 | } |