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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PRINTING_BACKEND_CUPS_HELPER_H_
#define PRINTING_BACKEND_CUPS_HELPER_H_
#include <cups/cups.h>
#include <string_view>
#include "base/component_export.h"
#include "printing/backend/cups_deleters.h"
class GURL;
// These are helper functions for dealing with CUPS.
namespace printing {
struct PrinterSemanticCapsAndDefaults;
// Time willing to wait for individual CUPS calls to complete, such as
// establishing a new connection or enumerating list of printers.
constexpr int kCupsTimeoutMs = 3000;
// Exclude fax and scanner devices when enumerating printers.
// Also exclude discovered printers that have not been added locally.
// On macOS, AirPrint destinations show up even if they're not added to
// the system, and their capabilities cannot be read in that situation.
// (crbug.com/1027834)
constexpr cups_ptype_t kDestinationsFilterMask =
CUPS_PRINTER_FAX | CUPS_PRINTER_SCANNER | CUPS_PRINTER_DISCOVERED;
// Helper wrapper around http_t structure, with connection and cleanup
// functionality.
class COMPONENT_EXPORT(PRINT_BACKEND) HttpConnectionCUPS {
public:
HttpConnectionCUPS(const GURL& print_server_url,
http_encryption_t encryption,
bool blocking);
~HttpConnectionCUPS();
http_t* http();
private:
ScopedHttpPtr http_;
};
// Helper function to parse and convert PPD capabilitites to
// semantic options.
COMPONENT_EXPORT(PRINT_BACKEND)
bool ParsePpdCapabilities(cups_dest_t* dest,
std::string_view locale,
std::string_view printer_capabilities,
PrinterSemanticCapsAndDefaults* printer_info);
ScopedHttpPtr HttpConnect2(const char* host,
int port,
http_addrlist_t* addrlist,
int family,
http_encryption_t encryption,
int blocking,
int msec,
int* cancel);
} // namespace printing
#endif // PRINTING_BACKEND_CUPS_HELPER_H_
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