| Tom Joseph | f8da32a | 2016-12-06 16:56:04 +0530 | [diff] [blame^] | 1 | #include "guid.hpp" |
| 2 | |
| 3 | #include <iostream> |
| 4 | #include <sstream> |
| 5 | #include <string> |
| 6 | |
| 7 | #include <host-ipmid/ipmid-api.h> |
| 8 | #include <mapper.h> |
| 9 | |
| 10 | namespace command |
| 11 | { |
| 12 | |
| 13 | std::array<uint8_t, BMC_GUID_LEN> getSystemGUID() |
| 14 | { |
| 15 | // Canned System GUID for QEMU where the Chassis DBUS object is not |
| 16 | // populated |
| 17 | std::array<uint8_t, BMC_GUID_LEN> guid = { 0x01, 0x02, 0x03, 0x04, |
| 18 | 0x05, 0x06, 0x07, 0x08, |
| 19 | 0x09, 0x0A, 0x0B, 0x0C, |
| 20 | 0x0D, 0x0E, 0x0F, 0x10 |
| 21 | }; |
| 22 | |
| 23 | constexpr auto objname = "/org/openbmc/control/chassis0"; |
| 24 | constexpr auto interface = "org.freedesktop.DBus.Properties"; |
| 25 | constexpr auto chassisIntf = "org.openbmc.control.Chassis"; |
| 26 | |
| 27 | sd_bus_message* reply = nullptr; |
| 28 | sd_bus_error error = SD_BUS_ERROR_NULL; |
| 29 | sd_bus* bus = ipmid_get_sd_bus_connection(); |
| 30 | int rc = 0; |
| 31 | char* uuid = nullptr; |
| 32 | char* busname = nullptr; |
| 33 | |
| 34 | do |
| 35 | { |
| 36 | rc = mapper_get_service(bus, objname, &busname); |
| 37 | if (rc < 0) |
| 38 | { |
| 39 | std::cerr << "Failed to get " << objname << " bus name: " |
| 40 | << strerror(-rc) << "\n"; |
| 41 | break; |
| 42 | } |
| 43 | |
| 44 | rc = sd_bus_call_method(bus, busname, objname, interface, "Get", &error, |
| 45 | &reply, "ss", chassisIntf, "uuid"); |
| 46 | if (rc < 0) |
| 47 | { |
| 48 | std::cerr << "Failed to call Get Method:" << strerror(-rc) << "\n"; |
| 49 | break; |
| 50 | } |
| 51 | |
| 52 | rc = sd_bus_message_read(reply, "v", "s", &uuid); |
| 53 | if (rc < 0 || uuid == NULL) |
| 54 | { |
| 55 | std::cerr << "Failed to get a response:" << strerror(-rc) << "\n"; |
| 56 | break; |
| 57 | } |
| 58 | |
| 59 | std::string readUUID(uuid); |
| 60 | auto len = readUUID.length(); |
| 61 | |
| 62 | for (size_t iter = 0, inc = 0; |
| 63 | iter < len && inc < BMC_GUID_LEN; iter += 2, inc++) |
| 64 | { |
| 65 | uint8_t hexVal = std::strtoul(readUUID.substr(iter, 2).c_str(), |
| 66 | NULL, 16); |
| 67 | guid[inc] = hexVal; |
| 68 | } |
| 69 | } |
| 70 | while (0); |
| 71 | |
| 72 | sd_bus_error_free(&error); |
| 73 | reply = sd_bus_message_unref(reply); |
| 74 | free(busname); |
| 75 | |
| 76 | return guid; |
| 77 | } |
| 78 | |
| 79 | } // namespace command |