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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-08 15:12:12 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-08 15:12:12 +0000 |
commit | a7c14e2f29831f4bc5eb18e23e55eb6f7a4e3431 (patch) | |
tree | 54617b4f5f04ee87a2c9e3b97cc88b8626859124 /widget/LSBUtils.cpp | |
parent | Releasing progress-linux version 115.7.0esr-1~deb12u1progress7u1. (diff) | |
download | firefox-esr-a7c14e2f29831f4bc5eb18e23e55eb6f7a4e3431.tar.xz firefox-esr-a7c14e2f29831f4bc5eb18e23e55eb6f7a4e3431.zip |
Merging upstream version 115.8.0esr.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'widget/LSBUtils.cpp')
-rw-r--r-- | widget/LSBUtils.cpp | 73 |
1 files changed, 72 insertions, 1 deletions
diff --git a/widget/LSBUtils.cpp b/widget/LSBUtils.cpp index bcadddef12..520d50e5cc 100644 --- a/widget/LSBUtils.cpp +++ b/widget/LSBUtils.cpp @@ -6,6 +6,9 @@ #include "LSBUtils.h" +#include <fstream> +#include <string> +#include <string_view> #include <unistd.h> #include "base/process_util.h" #include "mozilla/FileUtils.h" @@ -15,10 +18,78 @@ namespace mozilla::widget::lsb { -static const char* gLsbReleasePath = "/usr/bin/lsb_release"; +static const char gLsbReleasePath[] = "/usr/bin/lsb_release"; +static const char gEtcOsReleasePath[] = "/etc/os-release"; +static const char gUsrOsReleasePath[] = "/usr/lib/os-release"; + +// See https://www.freedesktop.org/software/systemd/man/latest/os-release.html +bool ExtractAndSetValue(nsACString& aContainer, std::string_view& aValue) { + // We assume the value is well formed and doesn't contain escape characters. + if (aValue.size() > 1 && (aValue.front() == '"' || aValue.front() == '\'')) { + // We assume the quote is properly balanced. + aValue = aValue.substr(1, aValue.size() - 2); + } + aContainer.Assign(aValue.data(), aValue.size()); + return !aValue.empty(); +} + +bool GetOSRelease(nsACString& aDistributor, nsACString& aDescription, + nsACString& aRelease, nsACString& aCodename) { + std::ifstream stream(gEtcOsReleasePath); + if (stream.fail()) { + stream.open(gUsrOsReleasePath); + if (stream.fail()) { + return false; + } + } + bool seen_id = false, seen_pretty_name = false, seen_version_id = false; + std::string rawline; + nsAutoCString name; + while (std::getline(stream, rawline)) { + std::string_view line(rawline); + size_t pos = line.find('='); + if (pos != std::string_view::npos) { + auto key = line.substr(0, pos); + auto value = line.substr(pos + 1); + if (key == "ID") { + if (ExtractAndSetValue(aDistributor, value)) { + // Capitalize the first letter of the id. This mimics what + // lsb_release does on Debian and derivatives. On RH derivatives, + // ID tends to be capitalized already. + char* c = aDistributor.BeginWriting(); + if (*c >= 'a' && *c <= 'z') { + *c -= ('a' - 'A'); + } + seen_id = true; + } + } else if (key == "NAME") { + ExtractAndSetValue(name, value); + } else if (key == "PRETTY_NAME") { + if (ExtractAndSetValue(aDescription, value)) seen_pretty_name = true; + } else if (key == "VERSION_ID") { + if (ExtractAndSetValue(aRelease, value)) seen_version_id = true; + } else if (key == "VERSION_CODENAME") { + ExtractAndSetValue(aCodename, value); + } + } + } + // If NAME is set and only differs from ID in case, use NAME. + if (seen_id && !name.IsEmpty() && name.EqualsIgnoreCase(aDistributor)) { + aDistributor = name; + } + // Only consider our work done if we've seen at least ID, PRETTY_NAME and + // VERSION_ID. + return seen_id && seen_pretty_name && seen_version_id; +} bool GetLSBRelease(nsACString& aDistributor, nsACString& aDescription, nsACString& aRelease, nsACString& aCodename) { + // Nowadays, /etc/os-release is more likely to be available than + // /usr/bin/lsb_release. Relying on the former also avoids forking. + if (GetOSRelease(aDistributor, aDescription, aRelease, aCodename)) { + return true; + } + if (access(gLsbReleasePath, R_OK) != 0) return false; int pipefd[2]; |