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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/printing/printer_translator.h"
#include <memory>
#include <optional>
#include <string>
#include <string_view>
#include <utility>
#include "base/logging.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/values.h"
#include "chromeos/printing/cups_printer_status.h"
#include "chromeos/printing/printer_configuration.h"
#include "chromeos/printing/uri.h"
#include "url/gurl.h"
#include "url/url_constants.h"
namespace chromeos {
namespace {
// For historical reasons, the effective_make_and_model field is just
// effective_model for policy printers.
const char kEffectiveModel[] = "effective_model";
// printer fields
const char kDisplayName[] = "display_name";
const char kDescription[] = "description";
const char kManufacturer[] = "manufacturer";
const char kModel[] = "model";
const char kUri[] = "uri";
const char kUUID[] = "uuid";
const char kPpdResource[] = "ppd_resource";
const char kAutoconf[] = "autoconf";
const char kGuid[] = "guid";
// Populates the |printer| object with corresponding fields from |value|.
// Returns false if |value| is missing a required field.
bool DictionaryToPrinter(const base::Value::Dict& value, Printer* printer) {
// Mandatory fields
const std::string* display_name = value.FindString(kDisplayName);
if (!display_name) {
LOG(WARNING) << "Display name required";
return false;
}
printer->set_display_name(*display_name);
const std::string* uri = value.FindString(kUri);
if (!uri) {
LOG(WARNING) << "Uri required";
return false;
}
std::string message;
if (!printer->SetUri(*uri, &message)) {
LOG(WARNING) << message;
return false;
}
// Optional fields
const std::string* description = value.FindString(kDescription);
if (description)
printer->set_description(*description);
const std::string* manufacturer = value.FindString(kManufacturer);
const std::string* model = value.FindString(kModel);
std::string make_and_model = manufacturer ? *manufacturer : std::string();
if (!make_and_model.empty() && model && !model->empty())
make_and_model.append(" ");
if (model)
make_and_model.append(*model);
printer->set_make_and_model(make_and_model);
const std::string* uuid = value.FindString(kUUID);
if (uuid)
printer->set_uuid(*uuid);
return true;
}
// Create an empty CupsPrinterInfo dictionary value. It should be consistent
// with the fields in js side. See cups_printers_browser_proxy.js for the
// definition of CupsPrintersInfo.
base::Value::Dict CreateEmptyPrinterInfo() {
base::Value::Dict printer_info;
printer_info.Set("isManaged", false);
printer_info.Set("ppdManufacturer", "");
printer_info.Set("ppdModel", "");
printer_info.Set("printerAddress", "");
printer_info.SetByDottedPath("printerPpdReference.autoconf", false);
printer_info.Set("printerDescription", "");
printer_info.Set("printerId", "");
printer_info.Set("printerMakeAndModel", "");
printer_info.Set("printerName", "");
printer_info.Set("printerPPDPath", "");
printer_info.Set("printerProtocol", "ipp");
printer_info.Set("printerQueue", "");
return printer_info;
}
// Formats a host and port string. The |port| portion is omitted if it is
// unspecified or invalid.
std::string PrinterAddress(const Uri& uri) {
const int port = uri.GetPort();
if (port > -1) {
return base::StringPrintf("%s:%d", uri.GetHostEncoded().c_str(), port);
}
return uri.GetHostEncoded();
}
} // namespace
const char kPrinterId[] = "id";
std::unique_ptr<Printer> RecommendedPrinterToPrinter(
const base::Value::Dict& pref) {
std::string id;
// Printer id comes from the id or guid field depending on the source.
const std::string* printer_id = pref.FindString(kPrinterId);
const std::string* printer_guid = pref.FindString(kGuid);
if (printer_id) {
id = *printer_id;
} else if (printer_guid) {
id = *printer_guid;
} else {
LOG(WARNING) << "Record id required";
return nullptr;
}
auto printer = std::make_unique<Printer>(id);
if (!DictionaryToPrinter(pref, printer.get())) {
LOG(WARNING) << "Failed to parse policy printer.";
return nullptr;
}
printer->set_source(Printer::SRC_POLICY);
const base::Value::Dict* ppd = pref.FindDict(kPpdResource);
if (ppd) {
Printer::PpdReference* ppd_reference = printer->mutable_ppd_reference();
const std::string* make_and_model = ppd->FindString(kEffectiveModel);
if (make_and_model)
ppd_reference->effective_make_and_model = *make_and_model;
std::optional<bool> autoconf = ppd->FindBool(kAutoconf);
if (autoconf.has_value())
ppd_reference->autoconf = *autoconf;
}
if (!printer->ppd_reference().autoconf &&
printer->ppd_reference().effective_make_and_model.empty()) {
// Either autoconf flag or make and model is mandatory.
LOG(WARNING)
<< "Missing autoconf flag and model information for policy printer.";
return nullptr;
}
if (printer->ppd_reference().autoconf &&
!printer->ppd_reference().effective_make_and_model.empty()) {
// PPD reference can't contain both autoconf and make and model.
LOG(WARNING) << "Autoconf flag is set together with model information for "
"policy printer.";
return nullptr;
}
return printer;
}
base::Value::Dict GetCupsPrinterInfo(const Printer& printer) {
base::Value::Dict printer_info = CreateEmptyPrinterInfo();
printer_info.Set("isManaged",
printer.source() == Printer::Source::SRC_POLICY);
printer_info.Set("printerId", printer.id());
printer_info.Set("printerName", printer.display_name());
printer_info.Set("printerDescription", printer.description());
printer_info.Set("printerMakeAndModel", printer.make_and_model());
// NOTE: This assumes the the function IsIppEverywhere() simply returns
// |printer.ppd_reference_.autoconf|. If the implementation of
// IsIppEverywhere() changes this will need to be changed as well.
printer_info.SetByDottedPath("printerPpdReference.autoconf",
printer.IsIppEverywhere());
printer_info.Set("printerPPDPath",
printer.ppd_reference().user_supplied_ppd_url);
printer_info.Set("printServerUri", printer.print_server_uri());
printer_info.Set("printerStatus", printer.printer_status().ConvertToValue());
if (!printer.HasUri()) {
// Uri is invalid so we set default values.
LOG(WARNING) << "Could not parse uri. Defaulting values";
printer_info.Set("printerAddress", "");
printer_info.Set("printerQueue", "");
printer_info.Set("printerProtocol", "ipp"); // IPP is our default protocol.
return printer_info;
}
if (printer.IsUsbProtocol())
printer_info.Set("ppdManufacturer", printer.usb_printer_manufacturer());
printer_info.Set("printerProtocol", printer.uri().GetScheme());
printer_info.Set("printerAddress", PrinterAddress(printer.uri()));
std::string printer_queue = printer.uri().GetPathEncodedAsString();
if (!printer_queue.empty())
printer_queue = printer_queue.substr(1); // removes the leading '/'
if (!printer.uri().GetQueryEncodedAsString().empty())
printer_queue += "?" + printer.uri().GetQueryEncodedAsString();
printer_info.Set("printerQueue", printer_queue);
return printer_info;
}
} // namespace chromeos
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