printing/client_info_helpers.cc

   1 // Copyright 2022 The Chromium Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "printing/client_info_helpers.h"
   6
   7 #include "base/no_destructor.h"
   8 #include "base/types/optional_util.h"
   9 #include "printing/mojom/print.mojom.h"
  10 #include "third_party/re2/src/re2/re2.h"
  11
  12 namespace printing {
  13
  14 namespace {
  15
  16 bool ValidateClientType(mojom::IppClientInfo::ClientType type) {
  17   return type >= mojom::IppClientInfo::ClientType::kMinValue &&
  18          type <= mojom::IppClientInfo::ClientType::kMaxValue;
  19 }
  20
  21 bool ValidateStringMember(const std::string* value, size_t max_length) {
  22   static const base::NoDestructor<RE2> kStringRegex("[a-zA-Z0-9_.-]*");
  23   return value == nullptr ||
  24          (value->size() <= max_length && RE2::FullMatch(*value, *kStringRegex));
  25 }
  26
  27 }  // namespace
  28
  29 bool ValidateClientInfoItem(const mojom::IppClientInfo& client_info) {
  30   return ValidateClientType(client_info.client_type) &&
  31          ValidateStringMember(&client_info.client_name,
  32                               kClientInfoMaxNameLength) &&
  33          ValidateStringMember(&client_info.client_string_version,
  34                               kClientInfoMaxStringVersionLength) &&
  35          ValidateStringMember(base::OptionalToPtr(client_info.client_patches),
  36                               kClientInfoMaxPatchesLength) &&
  37          ValidateStringMember(base::OptionalToPtr(client_info.client_version),
  38                               kClientInfoMaxVersionLength);
  39 }
  40
  41 }  // namespace printing