Add m-esr52 at 52.6.0

1 files changed, 239 insertions, 0 deletions

diff --git a/ipc/keystore/KeyStoreConnector.cpp b/ipc/keystore/KeyStoreConnector.cpp
new file mode 100644
index 000000000..0e11fcec6
--- /dev/null
+++ b/ipc/keystore/KeyStoreConnector.cpp
@@ -0,0 +1,239 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=2 et ft=cpp: 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 "KeyStoreConnector.h"
+#include <fcntl.h>
+#include <pwd.h>
+#include <sys/stat.h>
+#include <sys/un.h>
+#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, MOZ_COUNT_DTOR
+#include "nsThreadUtils.h" // For NS_IsMainThread.
+
+#ifdef MOZ_WIDGET_GONK
+#include <android/log.h>
+#define KEYSTORE_LOG(args...)  __android_log_print(ANDROID_LOG_INFO, "Gonk", args)
+#else
+#define KEYSTORE_LOG(args...)  printf(args);
+#endif
+
+namespace mozilla {
+namespace ipc {
+
+static const char KEYSTORE_SOCKET_PATH[] = "/dev/socket/keystore";
+
+KeyStoreConnector::KeyStoreConnector(const char** const aAllowedUsers)
+  : mAllowedUsers(aAllowedUsers)
+{
+  MOZ_COUNT_CTOR_INHERITED(KeyStoreConnector, UnixSocketConnector);
+}
+
+KeyStoreConnector::~KeyStoreConnector()
+{
+  MOZ_COUNT_DTOR_INHERITED(KeyStoreConnector, UnixSocketConnector);
+}
+
+nsresult
+KeyStoreConnector::CreateSocket(int& aFd) const
+{
+  unlink(KEYSTORE_SOCKET_PATH);
+
+  aFd = socket(AF_LOCAL, SOCK_STREAM, 0);
+  if (aFd < 0) {
+    KEYSTORE_LOG("Could not open KeyStore socket!");
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult
+KeyStoreConnector::SetSocketFlags(int aFd) const
+{
+  static const int sReuseAddress = 1;
+
+  // Set close-on-exec bit.
+  int flags = TEMP_FAILURE_RETRY(fcntl(aFd, F_GETFD));
+  if (flags < 0) {
+    return NS_ERROR_FAILURE;
+  }
+  flags |= FD_CLOEXEC;
+  int res = TEMP_FAILURE_RETRY(fcntl(aFd, F_SETFD, flags));
+  if (res < 0) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Set non-blocking status flag.
+  flags = TEMP_FAILURE_RETRY(fcntl(aFd, F_GETFL));
+  if (flags < 0) {
+    return NS_ERROR_FAILURE;
+  }
+  flags |= O_NONBLOCK;
+  res = TEMP_FAILURE_RETRY(fcntl(aFd, F_SETFL, flags));
+  if (res < 0) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Set socket addr to be reused even if kernel is still waiting to close.
+  res = setsockopt(aFd, SOL_SOCKET, SO_REUSEADDR, &sReuseAddress,
+                   sizeof(sReuseAddress));
+  if (res < 0) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult
+KeyStoreConnector::CheckPermission(int aFd) const
+{
+  struct ucred userCred;
+  socklen_t len = sizeof(userCred);
+
+  if (getsockopt(aFd, SOL_SOCKET, SO_PEERCRED, &userCred, &len)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  const struct passwd* userInfo = getpwuid(userCred.uid);
+  if (!userInfo) {
+    return NS_ERROR_FAILURE;
+  }
+
+  if (!mAllowedUsers) {
+    return NS_ERROR_FAILURE;
+  }
+
+  for (const char** user = mAllowedUsers; *user; ++user) {
+    if (!strcmp(*user, userInfo->pw_name)) {
+      return NS_OK;
+    }
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+nsresult
+KeyStoreConnector::CreateAddress(struct sockaddr& aAddress,
+                                 socklen_t& aAddressLength) const
+{
+  struct sockaddr_un* address =
+    reinterpret_cast<struct sockaddr_un*>(&aAddress);
+
+  size_t namesiz = strlen(KEYSTORE_SOCKET_PATH) + 1; // include trailing '\0'
+
+  if (namesiz > sizeof(address->sun_path)) {
+      KEYSTORE_LOG("Address too long for socket struct!");
+      return NS_ERROR_FAILURE;
+  }
+
+  address->sun_family = AF_UNIX;
+  memcpy(address->sun_path, KEYSTORE_SOCKET_PATH, namesiz);
+
+  aAddressLength = offsetof(struct sockaddr_un, sun_path) + namesiz;
+
+  return NS_OK;
+}
+
+// |UnixSocketConnector|
+
+nsresult
+KeyStoreConnector::ConvertAddressToString(const struct sockaddr& aAddress,
+                                          socklen_t aAddressLength,
+                                          nsACString& aAddressString)
+{
+  MOZ_ASSERT(aAddress.sa_family == AF_UNIX);
+
+  const struct sockaddr_un* un =
+    reinterpret_cast<const struct sockaddr_un*>(&aAddress);
+
+  size_t len = aAddressLength - offsetof(struct sockaddr_un, sun_path);
+
+  aAddressString.Assign(un->sun_path, len);
+
+  return NS_OK;
+}
+
+nsresult
+KeyStoreConnector::CreateListenSocket(struct sockaddr* aAddress,
+                                      socklen_t* aAddressLength,
+                                      int& aListenFd)
+{
+  ScopedClose fd;
+
+  nsresult rv = CreateSocket(fd.rwget());
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  rv = SetSocketFlags(fd);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  if (aAddress && aAddressLength) {
+    rv = CreateAddress(*aAddress, *aAddressLength);
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+  }
+
+  // Allow access for wpa_supplicant (different user, different group)
+  //
+  // TODO: Improve this by setting specific user/group for
+  //       wpa_supplicant by calling |fchmod| and |fchown|.
+  //
+  chmod(KEYSTORE_SOCKET_PATH, S_IRUSR|S_IWUSR|
+                              S_IRGRP|S_IWGRP|
+                              S_IROTH|S_IWOTH);
+
+  aListenFd = fd.forget();
+
+  return NS_OK;
+}
+
+nsresult
+KeyStoreConnector::AcceptStreamSocket(int aListenFd,
+                                      struct sockaddr* aAddress,
+                                      socklen_t* aAddressLength,
+                                      int& aStreamFd)
+{
+  ScopedClose fd(
+    TEMP_FAILURE_RETRY(accept(aListenFd, aAddress, aAddressLength)));
+  if (fd < 0) {
+    NS_WARNING("Cannot accept file descriptor!");
+    return NS_ERROR_FAILURE;
+  }
+  nsresult rv = SetSocketFlags(fd);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  rv = CheckPermission(fd);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  aStreamFd = fd.forget();
+
+  return NS_OK;
+}
+
+nsresult
+KeyStoreConnector::CreateStreamSocket(struct sockaddr* aAddress,
+                                      socklen_t* aAddressLength,
+                                      int& aStreamFd)
+{
+  MOZ_CRASH("|KeyStoreConnector| does not support creating stream sockets.");
+  return NS_ERROR_FAILURE;
+}
+
+nsresult
+KeyStoreConnector::Duplicate(UnixSocketConnector*& aConnector)
+{
+  aConnector = new KeyStoreConnector(*this);
+
+  return NS_OK;
+}
+
+}
+}