From 36ce07093b68b07513149577c209ae7a57ab356b Mon Sep 17 00:00:00 2001
From: Gabriele Contini <contini.mailing@gmail.com>
Date: 周日, 15 3月 2020 16:26:21 +0800
Subject: [PATCH] Merge branch 'feature/pc_identifiers' into develop issues #2 #3 #14 #49
---
src/library/os/linux/network.cpp | 125 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 125 insertions(+), 0 deletions(-)
diff --git a/src/library/os/linux/network.cpp b/src/library/os/linux/network.cpp
new file mode 100644
index 0000000..1f7a76a
--- /dev/null
+++ b/src/library/os/linux/network.cpp
@@ -0,0 +1,125 @@
+/**
+ * @file network_id.c
+ * @date 16 Sep 2014
+ * @brief File containing network interface detection functions for Linux.
+ *
+ * The only public function of this module is #getAdapterInfos(OsAdapterInfo *,
+ * size_t *), other functions are either static or inline.
+ *
+ * Responsibility of this module is to fill OsAdapterInfo structures, in a
+ * predictable way (skip "lo" interfaces,
+ * @TODO: place physical interfaces in front in a repeatable order: "eth", "wlan","ib"
+ * and other interfaces later, first the one with a a specified mac address, then
+ * the ones with only an ip.)
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE /* To get defns of NI_MAXSERV and NI_MAXHOST */
+#endif
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netdb.h>
+#include <ifaddrs.h>
+#include <linux/if_link.h>
+#include <netpacket/packet.h>
+#include <stdio.h>
+#include <unordered_map>
+#include <string.h>
+#include <memory.h>
+
+#include "../../base/StringUtils.h"
+#include "../../base/logger.h"
+#include "../network.hpp"
+
+namespace license {
+namespace os {
+using namespace std;
+
+
+/**
+ *
+ * @param adapterInfos
+ * @param adapter_info_size
+ * @return
+ */
+FUNCTION_RETURN getAdapterInfos(vector<OsAdapterInfo> &adapterInfos) {
+ unordered_map<string, OsAdapterInfo> adapterByName;
+
+ FUNCTION_RETURN f_return = FUNC_RET_OK;
+ struct ifaddrs *ifaddr, *ifa;
+ int family, n = 0;
+ unsigned int if_num, if_max;
+
+ if (getifaddrs(&ifaddr) == -1) {
+ LOG_WARN("getifaddrs failed == -1");
+ return FUNC_RET_ERROR;
+ }
+
+ for (ifa = ifaddr, n = 0, if_num = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
+ if (ifa->ifa_addr == NULL || (ifa->ifa_flags & IFF_LOOPBACK) != 0) {
+ continue;
+ }
+ string if_name(ifa->ifa_name, mstrnlen_s(ifa->ifa_name, NI_MAXHOST));
+ // if_name_position = ifname_position(ifnames, ifa->ifa_name, if_num);
+ // interface name not seen en advance
+ OsAdapterInfo *currentAdapter;
+ // FIXME not working
+ if (adapterByName.find(if_name) == adapterByName.end()) {
+ OsAdapterInfo newAdapter;
+ memset(&newAdapter, 0, sizeof(OsAdapterInfo));
+ strncpy(&newAdapter.description[0], ifa->ifa_name, NI_MAXHOST);
+ adapterByName[if_name] = newAdapter;
+ }
+ auto it = adapterByName.find(if_name);
+ currentAdapter = &it->second;
+ family = ifa->ifa_addr->sa_family;
+ /* Display interface name and family (including symbolic
+ form of the latter for the common families) */
+#ifdef _DEBUG
+ printf("%-8s %s (%d)\n", ifa->ifa_name,
+ (family == AF_PACKET) ? "AF_PACKET"
+ : (family == AF_INET) ? "AF_INET" : (family == AF_INET6) ? "AF_INET6" : "???",
+ family);
+#endif
+ /* For an AF_INET* interface address, display the address
+ * || family == AF_INET6*/
+ if (family == AF_INET) {
+ struct sockaddr_in *s1 = (struct sockaddr_in *)ifa->ifa_addr;
+ in_addr_t iaddr = s1->sin_addr.s_addr;
+ currentAdapter->ipv4_address[0] = (iaddr & 0x000000ff);
+ currentAdapter->ipv4_address[1] = (iaddr & 0x0000ff00) >> 8;
+ currentAdapter->ipv4_address[2] = (iaddr & 0x00ff0000) >> 16;
+ currentAdapter->ipv4_address[3] = (iaddr & 0xff000000) >> 24;
+
+ } else if (family == AF_PACKET && ifa->ifa_data != NULL) {
+ struct sockaddr_ll *s1 = (struct sockaddr_ll *)ifa->ifa_addr;
+ int i;
+ for (i = 0; i < 6; i++) {
+ currentAdapter->mac_address[i] = s1->sll_addr[i];
+#ifdef _DEBUG
+ printf("%02x:", s1->sll_addr[i]);
+#endif
+ }
+#ifdef _DEBUG
+ printf("\t %s\n", ifa->ifa_name);
+#endif
+ }
+ }
+ freeifaddrs(ifaddr);
+
+ // FIXME sort by eth , enps, wlan
+ if (adapterByName.size() == 0) {
+ f_return = FUNC_RET_NOT_AVAIL;
+ } else {
+ f_return = FUNC_RET_OK;
+ adapterInfos.reserve(adapterByName.size());
+ for (auto &it : adapterByName) {
+ adapterInfos.push_back(it.second);
+ }
+ }
+ return f_return;
+}
+
+} // namespace os
+} // namespace license
--
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