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// Copyright (c) 2012 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 "chrome/browser/ssl/ssl_error_info.h"
#include "base/i18n/time_formatting.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/grit/chromium_strings.h"
#include "chrome/grit/generated_resources.h"
#include "content/public/browser/cert_store.h"
#include "net/base/escape.h"
#include "net/base/net_errors.h"
#include "net/cert/cert_status_flags.h"
#include "net/ssl/ssl_info.h"
#include "ui/base/l10n/l10n_util.h"
#include "url/gurl.h"
using base::UTF8ToUTF16;
SSLErrorInfo::SSLErrorInfo(const base::string16& details,
const base::string16& short_description)
: details_(details),
short_description_(short_description) {
}
// static
SSLErrorInfo SSLErrorInfo::CreateError(ErrorType error_type,
net::X509Certificate* cert,
const GURL& request_url) {
base::string16 details, short_description;
switch (error_type) {
case CERT_COMMON_NAME_INVALID: {
// If the certificate contains multiple DNS names, we choose the most
// representative one -- either the DNS name that's also in the subject
// field, or the first one. If this heuristic turns out to be
// inadequate, we can consider choosing the DNS name that is the
// "closest match" to the host name in the request URL, or listing all
// the DNS names with an HTML <ul>.
std::vector<std::string> dns_names;
cert->GetDNSNames(&dns_names);
DCHECK(!dns_names.empty());
size_t i = 0;
for (; i < dns_names.size(); ++i) {
if (dns_names[i] == cert->subject().common_name)
break;
}
if (i == dns_names.size())
i = 0;
details =
l10n_util::GetStringFUTF16(IDS_CERT_ERROR_COMMON_NAME_INVALID_DETAILS,
UTF8ToUTF16(request_url.host()),
net::EscapeForHTML(
UTF8ToUTF16(dns_names[i])));
short_description = l10n_util::GetStringUTF16(
IDS_CERT_ERROR_COMMON_NAME_INVALID_DESCRIPTION);
break;
}
case CERT_DATE_INVALID:
if (cert->HasExpired()) {
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_EXPIRED_DETAILS,
UTF8ToUTF16(request_url.host()),
base::IntToString16(
(base::Time::Now() - cert->valid_expiry()).InDays()),
base::TimeFormatFriendlyDate(base::Time::Now()));
short_description =
l10n_util::GetStringUTF16(IDS_CERT_ERROR_EXPIRED_DESCRIPTION);
} else if (base::Time::Now() < cert->valid_start()) {
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_NOT_YET_VALID_DETAILS,
UTF8ToUTF16(request_url.host()),
base::IntToString16(
(cert->valid_start() - base::Time::Now()).InDays()));
short_description =
l10n_util::GetStringUTF16(IDS_CERT_ERROR_NOT_YET_VALID_DESCRIPTION);
} else {
// Two possibilities: (1) an intermediate or root certificate has
// expired, or (2) the certificate has become valid since the error
// occurred. Since (1) is more likely, assume that's the case.
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_CHAIN_EXPIRED_DETAILS,
UTF8ToUTF16(request_url.host()),
base::TimeFormatFriendlyDate(base::Time::Now()));
short_description =
l10n_util::GetStringUTF16(IDS_CERT_ERROR_CHAIN_EXPIRED_DESCRIPTION);
}
break;
case CERT_AUTHORITY_INVALID:
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_AUTHORITY_INVALID_DETAILS,
UTF8ToUTF16(request_url.host()));
short_description = l10n_util::GetStringUTF16(
IDS_CERT_ERROR_AUTHORITY_INVALID_DESCRIPTION);
break;
case CERT_CONTAINS_ERRORS:
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_CONTAINS_ERRORS_DETAILS,
UTF8ToUTF16(request_url.host()));
short_description =
l10n_util::GetStringUTF16(IDS_CERT_ERROR_CONTAINS_ERRORS_DESCRIPTION);
break;
case CERT_NO_REVOCATION_MECHANISM:
details = l10n_util::GetStringUTF16(
IDS_CERT_ERROR_NO_REVOCATION_MECHANISM_DETAILS);
short_description = l10n_util::GetStringUTF16(
IDS_CERT_ERROR_NO_REVOCATION_MECHANISM_DESCRIPTION);
break;
case CERT_REVOKED:
details = l10n_util::GetStringFUTF16(IDS_CERT_ERROR_REVOKED_CERT_DETAILS,
UTF8ToUTF16(request_url.host()));
short_description =
l10n_util::GetStringUTF16(IDS_CERT_ERROR_REVOKED_CERT_DESCRIPTION);
break;
case CERT_INVALID:
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_INVALID_CERT_DETAILS,
UTF8ToUTF16(request_url.host()));
short_description =
l10n_util::GetStringUTF16(IDS_CERT_ERROR_INVALID_CERT_DESCRIPTION);
break;
case CERT_WEAK_SIGNATURE_ALGORITHM:
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_WEAK_SIGNATURE_ALGORITHM_DETAILS,
UTF8ToUTF16(request_url.host()));
short_description = l10n_util::GetStringUTF16(
IDS_CERT_ERROR_WEAK_SIGNATURE_ALGORITHM_DESCRIPTION);
break;
case CERT_WEAK_KEY:
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_WEAK_KEY_DETAILS, UTF8ToUTF16(request_url.host()));
short_description = l10n_util::GetStringUTF16(
IDS_CERT_ERROR_WEAK_KEY_DESCRIPTION);
break;
case CERT_WEAK_KEY_DH:
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_WEAK_KEY_DETAILS, UTF8ToUTF16(request_url.host()));
short_description = l10n_util::GetStringUTF16(
IDS_CERT_ERROR_WEAK_KEY_DESCRIPTION);
case CERT_NAME_CONSTRAINT_VIOLATION:
details = l10n_util::GetStringFUTF16(
IDS_CERT_ERROR_NAME_CONSTRAINT_VIOLATION_DETAILS,
UTF8ToUTF16(request_url.host()));
short_description = l10n_util::GetStringUTF16(
IDS_CERT_ERROR_NAME_CONSTRAINT_VIOLATION_DESCRIPTION);
break;
case CERT_PINNED_KEY_MISSING:
details = l10n_util::GetStringUTF16(
IDS_ERRORPAGES_SUMMARY_PINNING_FAILURE);
short_description = l10n_util::GetStringUTF16(
IDS_ERRORPAGES_DETAILS_PINNING_FAILURE);
break;
case UNKNOWN:
details = l10n_util::GetStringUTF16(IDS_CERT_ERROR_UNKNOWN_ERROR_DETAILS);
short_description =
l10n_util::GetStringUTF16(IDS_CERT_ERROR_UNKNOWN_ERROR_DESCRIPTION);
break;
case CERT_UNABLE_TO_CHECK_REVOCATION: // Deprecated.
default:
NOTREACHED();
}
return SSLErrorInfo(details, short_description);
}
SSLErrorInfo::~SSLErrorInfo() {
}
// static
SSLErrorInfo::ErrorType SSLErrorInfo::NetErrorToErrorType(int net_error) {
switch (net_error) {
case net::ERR_CERT_COMMON_NAME_INVALID:
return CERT_COMMON_NAME_INVALID;
case net::ERR_CERT_DATE_INVALID:
return CERT_DATE_INVALID;
case net::ERR_CERT_AUTHORITY_INVALID:
return CERT_AUTHORITY_INVALID;
case net::ERR_CERT_CONTAINS_ERRORS:
return CERT_CONTAINS_ERRORS;
case net::ERR_CERT_NO_REVOCATION_MECHANISM:
return CERT_NO_REVOCATION_MECHANISM;
case net::ERR_CERT_UNABLE_TO_CHECK_REVOCATION:
return CERT_UNABLE_TO_CHECK_REVOCATION;
case net::ERR_CERT_REVOKED:
return CERT_REVOKED;
case net::ERR_CERT_INVALID:
return CERT_INVALID;
case net::ERR_CERT_WEAK_SIGNATURE_ALGORITHM:
return CERT_WEAK_SIGNATURE_ALGORITHM;
case net::ERR_CERT_WEAK_KEY:
return CERT_WEAK_KEY;
case net::ERR_CERT_NAME_CONSTRAINT_VIOLATION:
return CERT_NAME_CONSTRAINT_VIOLATION;
case net::ERR_SSL_WEAK_SERVER_EPHEMERAL_DH_KEY:
return CERT_WEAK_KEY_DH;
case net::ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN:
return CERT_PINNED_KEY_MISSING;
default:
NOTREACHED();
return UNKNOWN;
}
}
// static
int SSLErrorInfo::GetErrorsForCertStatus(int cert_id,
net::CertStatus cert_status,
const GURL& url,
std::vector<SSLErrorInfo>* errors) {
const net::CertStatus kErrorFlags[] = {
net::CERT_STATUS_COMMON_NAME_INVALID,
net::CERT_STATUS_DATE_INVALID,
net::CERT_STATUS_AUTHORITY_INVALID,
net::CERT_STATUS_NO_REVOCATION_MECHANISM,
net::CERT_STATUS_UNABLE_TO_CHECK_REVOCATION,
net::CERT_STATUS_REVOKED,
net::CERT_STATUS_INVALID,
net::CERT_STATUS_WEAK_SIGNATURE_ALGORITHM,
net::CERT_STATUS_WEAK_KEY,
net::CERT_STATUS_NAME_CONSTRAINT_VIOLATION,
};
const ErrorType kErrorTypes[] = {
CERT_COMMON_NAME_INVALID,
CERT_DATE_INVALID,
CERT_AUTHORITY_INVALID,
CERT_NO_REVOCATION_MECHANISM,
CERT_UNABLE_TO_CHECK_REVOCATION,
CERT_REVOKED,
CERT_INVALID,
CERT_WEAK_SIGNATURE_ALGORITHM,
CERT_WEAK_KEY,
CERT_NAME_CONSTRAINT_VIOLATION,
};
DCHECK(arraysize(kErrorFlags) == arraysize(kErrorTypes));
scoped_refptr<net::X509Certificate> cert = NULL;
int count = 0;
for (size_t i = 0; i < arraysize(kErrorFlags); ++i) {
if (cert_status & kErrorFlags[i]) {
count++;
if (!cert.get()) {
bool r = content::CertStore::GetInstance()->RetrieveCert(
cert_id, &cert);
DCHECK(r);
}
if (errors)
errors->push_back(
SSLErrorInfo::CreateError(kErrorTypes[i], cert.get(), url));
}
}
return count;
}
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