1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
10 #include "base/process_util.h"
11 #include "mozilla/FileUtils.h"
12 #include "mozilla/Result.h"
13 #include "mozilla/ResultVariant.h"
14 #include "mozilla/ipc/LaunchError.h"
16 namespace mozilla::widget::lsb
{
18 static const char* gLsbReleasePath
= "/usr/bin/lsb_release";
20 bool GetLSBRelease(nsACString
& aDistributor
, nsACString
& aDescription
,
21 nsACString
& aRelease
, nsACString
& aCodename
) {
22 if (access(gLsbReleasePath
, R_OK
) != 0) return false;
25 if (pipe(pipefd
) == -1) {
26 NS_WARNING("pipe() failed!");
30 std::vector
<std::string
> argv
= {gLsbReleasePath
, "-idrc"};
32 base::LaunchOptions options
;
33 options
.fds_to_remap
.push_back({pipefd
[1], STDOUT_FILENO
});
36 base::ProcessHandle process
;
37 Result
<Ok
, ipc::LaunchError
> err
= base::LaunchApp(argv
, options
, &process
);
40 NS_WARNING("Failed to spawn lsb_release!");
45 ScopedCloseFile
stream(fdopen(pipefd
[0], "r"));
47 NS_WARNING("Could not wrap fd!");
52 char dist
[256], desc
[256], release
[256], codename
[256];
54 "Distributor ID:\t%255[^\n]\n"
55 "Description:\t%255[^\n]\n"
56 "Release:\t%255[^\n]\n"
57 "Codename:\t%255[^\n]\n",
58 dist
, desc
, release
, codename
) != 4) {
59 NS_WARNING("Failed to parse lsb_release!");
63 aDistributor
.Assign(dist
);
64 aDescription
.Assign(desc
);
65 aRelease
.Assign(release
);
66 aCodename
.Assign(codename
);
70 } // namespace mozilla::widget::lsb