Malformed PortRange or ThirdPartyAuthConfig trigger OnPolicyError.

remoting/host/third_party_auth_config.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "remoting/host/third_party_auth_config.h"
+
+#include "base/logging.h"
+#include "base/values.h"
+#include "policy/policy_constants.h"
+
+namespace remoting {
+
+namespace {
+
+bool ParseUrlPolicy(const std::string& str, GURL* out) {
+  if (str.empty()) {
+    *out = GURL();
+    return true;
+  }
+
+  GURL gurl(str);
+  if (!gurl.is_valid()) {
+    LOG(ERROR) << "Not a valid URL: " << str;
+    return false;
+  }
+// We validate https-vs-http only on Release builds to help with manual testing.
+#if defined(NDEBUG)
+  if (!gurl.SchemeIsSecure()) {
+    LOG(ERROR) << "Not a secure URL: " << str;
+    return false;
+  }
+#endif
+
+  *out = gurl;
+  return true;
+}
+
+}  // namespace
+
+bool ThirdPartyAuthConfig::ParseStrings(
+    const std::string& token_url,
+    const std::string& token_validation_url,
+    const std::string& token_validation_cert_issuer,
+    ThirdPartyAuthConfig* result) {
+  ThirdPartyAuthConfig tmp;
+
+  // Extract raw values for the 3 individual fields.
+  bool urls_valid = true;
+  urls_valid &= ParseUrlPolicy(token_url, &tmp.token_url);
+  urls_valid &= ParseUrlPolicy(token_validation_url, &tmp.token_validation_url);
+  if (!urls_valid) {
+    return false;
+  }
+  tmp.token_validation_cert_issuer = token_validation_cert_issuer;
+
+  // Validate inter-dependencies between the 3 fields.
+  if (tmp.token_url.is_empty() ^ tmp.token_validation_url.is_empty()) {
+    LOG(ERROR) << "TokenUrl and TokenValidationUrl "
+               << "have to be specified together.";
+    return false;
+  }
+  if (!tmp.token_validation_cert_issuer.empty() && tmp.token_url.is_empty()) {
+    LOG(ERROR) << "TokenValidationCertificateIssuer cannot be used "
+               << "without TokenUrl and TokenValidationUrl.";
+    return false;
+  }
+
+  *result = tmp;
+  return true;
+}
+
+namespace {
+
+void ExtractHelper(const base::DictionaryValue& policy_dict,
+                   const std::string& policy_name,
+                   bool* policy_present,
+                   std::string* policy_value) {
+  if (policy_dict.GetString(policy_name, policy_value)) {
+    *policy_present = true;
+  } else {
+    policy_value->clear();
+  }
+}
+
+}  // namespace
+
+bool ThirdPartyAuthConfig::ExtractStrings(
+    const base::DictionaryValue& policy_dict,
+    std::string* token_url,
+    std::string* token_validation_url,
+    std::string* token_validation_cert_issuer) {
+  bool policies_present = false;
+  ExtractHelper(policy_dict, policy::key::kRemoteAccessHostTokenUrl,
+                &policies_present, token_url);
+  ExtractHelper(policy_dict, policy::key::kRemoteAccessHostTokenValidationUrl,
+                &policies_present, token_validation_url);
+  ExtractHelper(policy_dict,
+                policy::key::kRemoteAccessHostTokenValidationCertificateIssuer,
+                &policies_present, token_validation_cert_issuer);
+  return policies_present;
+}
+
+ThirdPartyAuthConfig::ParseStatus ThirdPartyAuthConfig::Parse(
+    const base::DictionaryValue& policy_dict,
+    ThirdPartyAuthConfig* result) {
+  // Extract 3 individial policy values.
+  std::string token_url;
+  std::string token_validation_url;
+  std::string token_validation_cert_issuer;
+  if (!ThirdPartyAuthConfig::ExtractStrings(policy_dict, &token_url,
+                                            &token_validation_url,
+                                            &token_validation_cert_issuer)) {
+    return NoPolicy;
+  }
+
+  // Parse the policy value.
+  if (!ThirdPartyAuthConfig::ParseStrings(token_url, token_validation_url,
+                                          token_validation_cert_issuer,
+                                          result)) {
+    return InvalidPolicy;
+  }
+
+  return ParsingSuccess;
+}
+
+std::ostream& operator<<(std::ostream& os, const ThirdPartyAuthConfig& cfg) {
+  if (cfg.is_null()) {
+    os << "<no 3rd party auth config specified>";
+  } else {
+    os << "TokenUrl = <" << cfg.token_url << ">, ";
+    os << "TokenValidationUrl = <" << cfg.token_validation_url << ">, ";
+    os << "TokenValidationCertificateIssuer = <"
+       << cfg.token_validation_cert_issuer << ">";
+  }
+  return os;
+}
+
+}  // namespace remoting