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Ratan Gupta63476192018-04-19 16:55:32 +05301#include "snmp_util.hpp"
Patrick Williams1334b7b2021-02-22 17:15:12 -06002
Ratan Gupta63476192018-04-19 16:55:32 +05303#include "xyz/openbmc_project/Common/error.hpp"
4
Ratan Gupta213517b2018-04-28 13:41:09 +05305#include <arpa/inet.h>
Patrick Williams1334b7b2021-02-22 17:15:12 -06006#include <netdb.h>
Ratan Gupta213517b2018-04-28 13:41:09 +05307
Ratan Gupta63476192018-04-19 16:55:32 +05308#include <phosphor-logging/elog-errors.hpp>
9#include <phosphor-logging/log.hpp>
10
Ratan Gupta63476192018-04-19 16:55:32 +053011#include <string>
12
13namespace phosphor
14{
15
16using namespace phosphor::logging;
17using namespace sdbusplus::xyz::openbmc_project::Common::Error;
18
19ObjectValueTree getManagedObjects(sdbusplus::bus::bus& bus,
20 const std::string& service,
21 const std::string& objPath)
22{
23 ObjectValueTree interfaces;
24
25 auto method = bus.new_method_call(service.c_str(), objPath.c_str(),
26 "org.freedesktop.DBus.ObjectManager",
27 "GetManagedObjects");
28
29 auto reply = bus.call(method);
30
31 if (reply.is_method_error())
32 {
33 log<level::ERR>("Failed to get managed objects",
34 entry("PATH=%s", objPath.c_str()));
35 elog<InternalFailure>();
36 }
37
38 reply.read(interfaces);
39 return interfaces;
40}
41
42namespace network
43{
44
45std::string resolveAddress(const std::string& address)
46{
47 addrinfo hints{0};
48 addrinfo* addr = nullptr;
49
50 hints.ai_family = AF_UNSPEC;
51 hints.ai_socktype = SOCK_STREAM;
52 hints.ai_flags |= AI_CANONNAME;
53
54 auto result = getaddrinfo(address.c_str(), NULL, &hints, &addr);
55 if (result)
56 {
57 log<level::ERR>("getaddrinfo failed",
58 entry("ADDRESS=%s", address.c_str()));
59 elog<InternalFailure>();
60 }
61
62 AddrPtr addrPtr{addr};
63 addr = nullptr;
64
65 char ipaddress[INET6_ADDRSTRLEN]{0};
66 result = getnameinfo(addrPtr->ai_addr, addrPtr->ai_addrlen, ipaddress,
67 sizeof(ipaddress), NULL, 0, NI_NUMERICHOST);
68 if (result)
69 {
70 log<level::ERR>("getnameinfo failed",
71 entry("ADDRESS=%s", address.c_str()));
72 elog<InternalFailure>();
73 }
74
Chicago Duan7350c772021-12-03 16:54:17 +080075 unsigned char buf[sizeof(struct in6_addr)];
76 int isValid = inet_pton(AF_INET, ipaddress, buf);
77 if (isValid < 0)
78 {
79 log<level::ERR>("Invalid address",
80 entry("ADDRESS=%s", address.c_str()));
81 elog<InternalFailure>();
82 }
83 if (isValid == 0)
84 {
85 int isValid6 = inet_pton(AF_INET6, ipaddress, buf);
86 if (isValid6 < 1)
87 {
88 log<level::ERR>("Invalid address",
89 entry("ADDRESS=%s", address.c_str()));
90 elog<InternalFailure>();
91 }
92 }
93
Ratan Gupta63476192018-04-19 16:55:32 +053094 return ipaddress;
95}
96
97namespace snmp
98{
99
100static constexpr auto busName = "xyz.openbmc_project.Network.SNMP";
101static constexpr auto root = "/xyz/openbmc_project/network/snmp/manager";
102static constexpr auto clientIntf = "xyz.openbmc_project.Network.Client";
103
104/** @brief Gets the sdbus object for this process.
105 * @return the bus object.
106 */
107static auto& getBus()
108{
109 static auto bus = sdbusplus::bus::new_default();
110 return bus;
111}
112
113std::vector<std::string> getManagers()
114{
115 std::vector<std::string> managers;
116 auto& bus = getBus();
117 auto objTree = phosphor::getManagedObjects(bus, busName, root);
118 for (const auto& objIter : objTree)
119 {
120 try
121 {
122 auto& intfMap = objIter.second;
123 auto& snmpClientProps = intfMap.at(clientIntf);
William A. Kennington IIIbbee5d02018-11-06 15:52:22 -0800124 auto& address =
Patrick Williams7d4bd222020-05-13 11:05:10 -0500125 std::get<std::string>(snmpClientProps.at("Address"));
126 auto& port = std::get<uint16_t>(snmpClientProps.at("Port"));
Ratan Gupta63476192018-04-19 16:55:32 +0530127 auto ipaddress = phosphor::network::resolveAddress(address);
128 auto mgr = std::move(ipaddress);
129 if (port > 0)
130 {
131 mgr += ":";
132 mgr += std::to_string(port);
133 }
134 managers.push_back(mgr);
135 }
136 catch (const std::exception& e)
137 {
138 log<level::ERR>(e.what());
139 }
140 }
141 return managers;
142}
143
144} // namespace snmp
145} // namespace network
146} // namespace phosphor