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-rw-r--r--netwerk/base/NetworkInfoServiceLinux.cpp95
1 files changed, 95 insertions, 0 deletions
diff --git a/netwerk/base/NetworkInfoServiceLinux.cpp b/netwerk/base/NetworkInfoServiceLinux.cpp
new file mode 100644
index 0000000000..8b365e4028
--- /dev/null
+++ b/netwerk/base/NetworkInfoServiceLinux.cpp
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <netdb.h>
+
+#include "mozilla/DebugOnly.h"
+#include "mozilla/ScopeExit.h"
+
+#include "NetworkInfoServiceImpl.h"
+
+namespace mozilla::net {
+
+static nsresult ListInterfaceAddresses(int aFd, const char* aInterface,
+ AddrMapType& aAddrMap);
+
+nsresult DoListAddresses(AddrMapType& aAddrMap) {
+ int fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (fd < 0) {
+ return NS_ERROR_FAILURE;
+ }
+
+ auto autoCloseSocket = MakeScopeExit([&] { close(fd); });
+
+ struct ifconf ifconf {};
+ /* 16k of space should be enough to list all interfaces. Worst case, if it's
+ * not then we will error out and fail to list addresses. This should only
+ * happen on pathological machines with way too many interfaces.
+ */
+ char buf[16384];
+
+ ifconf.ifc_len = sizeof(buf);
+ ifconf.ifc_buf = buf;
+ if (ioctl(fd, SIOCGIFCONF, &ifconf) != 0) {
+ return NS_ERROR_FAILURE;
+ }
+
+ struct ifreq* ifreq = ifconf.ifc_req;
+ int i = 0;
+ while (i < ifconf.ifc_len) {
+ size_t len = sizeof(struct ifreq);
+
+ DebugOnly<nsresult> rv =
+ ListInterfaceAddresses(fd, ifreq->ifr_name, aAddrMap);
+ NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "ListInterfaceAddresses failed");
+
+ ifreq = (struct ifreq*)((char*)ifreq + len);
+ i += len;
+ }
+
+ return NS_OK;
+}
+
+static nsresult ListInterfaceAddresses(int aFd, const char* aInterface,
+ AddrMapType& aAddrMap) {
+ struct ifreq ifreq {};
+ memset(&ifreq, 0, sizeof(struct ifreq));
+ strncpy(ifreq.ifr_name, aInterface, IFNAMSIZ - 1);
+ if (ioctl(aFd, SIOCGIFADDR, &ifreq) != 0) {
+ return NS_ERROR_FAILURE;
+ }
+
+ char host[128];
+ switch (ifreq.ifr_addr.sa_family) {
+ case AF_INET:
+ case AF_INET6:
+ getnameinfo(&ifreq.ifr_addr, sizeof(ifreq.ifr_addr), host, sizeof(host),
+ nullptr, 0, NI_NUMERICHOST);
+ break;
+ case AF_UNSPEC:
+ return NS_OK;
+ default:
+ // Unknown family.
+ return NS_OK;
+ }
+
+ nsCString ifaceStr;
+ ifaceStr.AssignASCII(aInterface);
+
+ nsCString addrStr;
+ addrStr.AssignASCII(host);
+
+ aAddrMap.InsertOrUpdate(ifaceStr, addrStr);
+
+ return NS_OK;
+}
+
+} // namespace mozilla::net