forked from couchbase/kv_engine
-
Notifications
You must be signed in to change notification settings - Fork 0
/
network_interface.cc
222 lines (194 loc) · 7.36 KB
/
network_interface.cc
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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2017 Couchbase, Inc.
*
* 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.
*/
#include "network_interface.h"
#include "settings.h"
#include <logger/logger.h>
#include <platform/dirutils.h>
#include <gsl/gsl>
#include <vector>
static void handle_interface_maxconn(NetworkInterface& ifc, cJSON* obj) {
if (obj->type != cJSON_Number) {
throw std::invalid_argument(R"("maxconn" must be a number)");
}
ifc.maxconn = gsl::narrow<int>(obj->valueint);
}
static void handle_interface_port(NetworkInterface& ifc, cJSON* obj) {
if (obj->type != cJSON_Number) {
throw std::invalid_argument(R"("port" must be a number)");
}
ifc.port = in_port_t(obj->valueint);
}
static void handle_interface_host(NetworkInterface& ifc, cJSON* obj) {
if (obj->type != cJSON_String) {
throw std::invalid_argument(R"("host" must be a string)");
}
ifc.host.assign(obj->valuestring);
}
static void handle_interface_backlog(NetworkInterface& ifc, cJSON* obj) {
if (obj->type != cJSON_Number) {
throw std::invalid_argument(R"("backlog" must be a number)");
}
ifc.backlog = gsl::narrow<int>(obj->valueint);
}
/**
* Set the given NetworkInterface::Protocol based on the value of `obj`,
* or throw std::invalid_argument if obj is not a valid setting.
*/
static void handle_interface_protocol(NetworkInterface::Protocol& proto,
const char* proto_name,
const cJSON* obj) {
if (obj->type == cJSON_String) {
const std::string value(obj->valuestring);
if (value == "required") {
proto = NetworkInterface::Protocol::Required;
} else if (value == "optional") {
proto = NetworkInterface::Protocol::Optional;
} else if (value == "off") {
proto = NetworkInterface::Protocol::Off;
} else {
throw std::invalid_argument(
"\"" + std::string(proto_name) +
"\" has an unrecognized string value \"" + value + R"(")");
}
// Backwards compatibility - map True -> Optional, False -> Off
} else if (obj->type == cJSON_True) {
proto = NetworkInterface::Protocol::Optional;
} else if (obj->type == cJSON_False) {
proto = NetworkInterface::Protocol::Off;
} else {
throw std::invalid_argument("\"" + std::string(proto_name) +
"\" must be a string or boolean value)");
}
}
static void handle_interface_ipv4(NetworkInterface& ifc, cJSON* obj) {
handle_interface_protocol(ifc.ipv4, "ipv4", obj);
}
static void handle_interface_ipv6(NetworkInterface& ifc, cJSON* obj) {
handle_interface_protocol(ifc.ipv6, "ipv6", obj);
}
static void handle_interface_tcp_nodelay(NetworkInterface& ifc, cJSON* obj) {
if (obj->type == cJSON_True) {
ifc.tcp_nodelay = true;
} else if (obj->type == cJSON_False) {
ifc.tcp_nodelay = false;
} else {
throw std::invalid_argument(R"("tcp_nodelay" must be a boolean value)");
}
}
static void handle_interface_management(NetworkInterface& ifc, cJSON* obj) {
if (obj->type == cJSON_True) {
ifc.management = true;
} else if (obj->type == cJSON_False) {
ifc.management = false;
} else {
throw std::invalid_argument(R"("management" must be a boolean value)");
}
}
static void handle_interface_ssl(NetworkInterface& ifc, cJSON* obj) {
if (obj->type != cJSON_Object) {
throw std::invalid_argument(R"("ssl" must be an object)");
}
auto* key = cJSON_GetObjectItem(obj, "key");
auto* cert = cJSON_GetObjectItem(obj, "cert");
if (key == nullptr || cert == nullptr) {
throw std::invalid_argument(
R"("ssl" must contain both "key" and "cert")");
}
if (key->type != cJSON_String) {
throw std::invalid_argument(R"("ssl:key" must be a key)");
}
ifc.ssl.key.assign(key->valuestring);
if (!cb::io::isFile(key->valuestring)) {
throw std::system_error(
std::make_error_code(std::errc::no_such_file_or_directory),
R"("ssl:key":')" + ifc.ssl.key + "'");
}
if (cert->type != cJSON_String) {
throw std::invalid_argument(R"("ssl:cert" must be a key)");
}
ifc.ssl.cert.assign(cert->valuestring);
if (!cb::io::isFile(cert->valuestring)) {
throw std::system_error(
std::make_error_code(std::errc::no_such_file_or_directory),
R"("ssl:cert":')" + ifc.ssl.cert + "'");
}
}
static void handle_interface_protocol(NetworkInterface& ifc, cJSON* obj) {
if (obj->type != cJSON_String) {
throw std::invalid_argument(R"("protocol" must be a string)");
}
if (strcmp(obj->valuestring, "memcached") != 0) {
throw std::invalid_argument(R"("protocol" must be "memcached")");
}
}
NetworkInterface::NetworkInterface(gsl::not_null<const cJSON*> json) {
struct interface_config_tokens {
/**
* The key in the configuration
*/
std::string key;
/**
* A callback method used by the interface object when we're parsing
* the config attributes.
*
* @param ifc the interface object to update
* @param obj the current object in the configuration we're looking at
* @throws std::invalid_argument if it something is wrong with the
* entry
*/
void (*handler)(NetworkInterface& ifc, cJSON* obj);
};
std::vector<interface_config_tokens> handlers = {
{"maxconn", handle_interface_maxconn},
{"port", handle_interface_port},
{"host", handle_interface_host},
{"backlog", handle_interface_backlog},
{"ipv4", handle_interface_ipv4},
{"ipv6", handle_interface_ipv6},
{"tcp_nodelay", handle_interface_tcp_nodelay},
{"ssl", handle_interface_ssl},
{"management", handle_interface_management},
{"protocol", handle_interface_protocol},
};
cJSON* obj = json->child;
while (obj != nullptr) {
std::string key(obj->string);
bool found = false;
for (auto& handler : handlers) {
if (handler.key == key) {
handler.handler(*this, obj);
found = true;
break;
}
}
if (!found) {
LOG_INFO(R"(Unknown token "{}" in config ignored.)", obj->string);
}
obj = obj->next;
}
}
std::string to_string(const NetworkInterface::Protocol& proto) {
switch (proto) {
case NetworkInterface::Protocol::Off:
return "off";
case NetworkInterface::Protocol::Optional:
return "optional";
case NetworkInterface::Protocol::Required:
return "required";
}
return "<invalid>";
}