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723 lines
22 KiB
723 lines
22 KiB
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#include "cmFileCopier.h"
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#include "cmsys/Directory.hxx"
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#include "cmsys/Glob.hxx"
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#include "cmExecutionStatus.h"
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#include "cmFSPermissions.h"
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#include "cmFileTimes.h"
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#include "cmMakefile.h"
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#include "cmStringAlgorithms.h"
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#include "cmSystemTools.h"
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#include "cmValue.h"
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#ifdef _WIN32
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# include <winerror.h>
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# include "cmsys/FStream.hxx"
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#else
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# include <cerrno>
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#endif
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#include <cstring>
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#include <sstream>
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using namespace cmFSPermissions;
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cmFileCopier::cmFileCopier(cmExecutionStatus& status, const char* name)
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: Status(status)
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, Makefile(&status.GetMakefile())
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, Name(name)
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{
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}
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cmFileCopier::~cmFileCopier() = default;
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cmFileCopier::MatchProperties cmFileCopier::CollectMatchProperties(
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const std::string& file)
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{
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// Match rules are case-insensitive on some platforms.
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#if defined(_WIN32) || defined(__APPLE__) || defined(__CYGWIN__)
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const std::string file_to_match = cmSystemTools::LowerCase(file);
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#else
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const std::string& file_to_match = file;
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#endif
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// Collect properties from all matching rules.
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bool matched = false;
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MatchProperties result;
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for (MatchRule& mr : this->MatchRules) {
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if (mr.Regex.find(file_to_match)) {
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matched = true;
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result.Exclude |= mr.Properties.Exclude;
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result.Permissions |= mr.Properties.Permissions;
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}
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}
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if (!matched && !this->MatchlessFiles) {
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result.Exclude = !cmSystemTools::FileIsDirectory(file);
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}
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return result;
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}
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bool cmFileCopier::SetPermissions(const std::string& toFile,
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mode_t permissions)
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{
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if (permissions) {
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#ifdef _WIN32
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if (Makefile->IsOn("CMAKE_CROSSCOMPILING")) {
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// Store the mode in an NTFS alternate stream.
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std::string mode_t_adt_filename = toFile + ":cmake_mode_t";
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// Writing to an NTFS alternate stream changes the modification
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// time, so we need to save and restore its original value.
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cmFileTimes file_time_orig(toFile);
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{
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cmsys::ofstream permissionStream(mode_t_adt_filename.c_str());
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if (permissionStream) {
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permissionStream << std::oct << permissions << std::endl;
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}
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permissionStream.close();
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}
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file_time_orig.Store(toFile);
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}
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#endif
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if (!cmSystemTools::SetPermissions(toFile, permissions)) {
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std::ostringstream e;
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e << this->Name << " cannot set permissions on \"" << toFile
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<< "\": " << cmSystemTools::GetLastSystemError() << ".";
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this->Status.SetError(e.str());
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return false;
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}
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}
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return true;
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}
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// Translate an argument to a permissions bit.
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bool cmFileCopier::CheckPermissions(std::string const& arg,
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mode_t& permissions)
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{
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if (!cmFSPermissions::stringToModeT(arg, permissions)) {
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std::ostringstream e;
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e << this->Name << " given invalid permission \"" << arg << "\".";
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this->Status.SetError(e.str());
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return false;
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}
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return true;
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}
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std::string const& cmFileCopier::ToName(std::string const& fromName)
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{
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return fromName;
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}
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bool cmFileCopier::ReportMissing(const std::string& fromFile)
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{
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// The input file does not exist and installation is not optional.
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std::ostringstream e;
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e << this->Name << " cannot find \"" << fromFile
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<< "\": " << cmSystemTools::GetLastSystemError() << ".";
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this->Status.SetError(e.str());
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return false;
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}
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void cmFileCopier::NotBeforeMatch(std::string const& arg)
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{
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std::ostringstream e;
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e << "option " << arg << " may not appear before PATTERN or REGEX.";
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this->Status.SetError(e.str());
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this->Doing = DoingError;
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}
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void cmFileCopier::NotAfterMatch(std::string const& arg)
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{
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std::ostringstream e;
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e << "option " << arg << " may not appear after PATTERN or REGEX.";
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this->Status.SetError(e.str());
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this->Doing = DoingError;
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}
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void cmFileCopier::DefaultFilePermissions()
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{
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// Use read/write permissions.
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this->FilePermissions = 0;
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this->FilePermissions |= mode_owner_read;
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this->FilePermissions |= mode_owner_write;
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this->FilePermissions |= mode_group_read;
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this->FilePermissions |= mode_world_read;
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}
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void cmFileCopier::DefaultDirectoryPermissions()
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{
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// Use read/write/executable permissions.
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this->DirPermissions = 0;
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this->DirPermissions |= mode_owner_read;
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this->DirPermissions |= mode_owner_write;
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this->DirPermissions |= mode_owner_execute;
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this->DirPermissions |= mode_group_read;
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this->DirPermissions |= mode_group_execute;
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this->DirPermissions |= mode_world_read;
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this->DirPermissions |= mode_world_execute;
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}
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bool cmFileCopier::GetDefaultDirectoryPermissions(mode_t** mode)
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{
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// check if default dir creation permissions were set
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cmValue default_dir_install_permissions = this->Makefile->GetDefinition(
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"CMAKE_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS");
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if (cmNonempty(default_dir_install_permissions)) {
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std::vector<std::string> items =
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cmExpandedList(*default_dir_install_permissions);
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for (const auto& arg : items) {
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if (!this->CheckPermissions(arg, **mode)) {
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this->Status.SetError(
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" Set with CMAKE_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS variable.");
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return false;
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}
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}
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} else {
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*mode = nullptr;
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}
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return true;
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}
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bool cmFileCopier::Parse(std::vector<std::string> const& args)
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{
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this->Doing = DoingFiles;
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for (unsigned int i = 1; i < args.size(); ++i) {
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// Check this argument.
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if (!this->CheckKeyword(args[i]) && !this->CheckValue(args[i])) {
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std::ostringstream e;
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e << "called with unknown argument \"" << args[i] << "\".";
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this->Status.SetError(e.str());
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return false;
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}
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// Quit if an argument is invalid.
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if (this->Doing == DoingError) {
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return false;
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}
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}
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// Require a destination.
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if (this->Destination.empty()) {
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std::ostringstream e;
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e << this->Name << " given no DESTINATION";
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this->Status.SetError(e.str());
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return false;
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}
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// If file permissions were not specified set default permissions.
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if (!this->UseGivenPermissionsFile && !this->UseSourcePermissions) {
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this->DefaultFilePermissions();
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}
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// If directory permissions were not specified set default permissions.
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if (!this->UseGivenPermissionsDir && !this->UseSourcePermissions) {
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this->DefaultDirectoryPermissions();
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}
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return true;
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}
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bool cmFileCopier::CheckKeyword(std::string const& arg)
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{
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if (arg == "DESTINATION") {
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if (this->CurrentMatchRule) {
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this->NotAfterMatch(arg);
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} else {
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this->Doing = DoingDestination;
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}
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} else if (arg == "FILES_FROM_DIR") {
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if (this->CurrentMatchRule) {
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this->NotAfterMatch(arg);
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} else {
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this->Doing = DoingFilesFromDir;
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}
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} else if (arg == "PATTERN") {
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this->Doing = DoingPattern;
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} else if (arg == "REGEX") {
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this->Doing = DoingRegex;
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} else if (arg == "FOLLOW_SYMLINK_CHAIN") {
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this->FollowSymlinkChain = true;
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this->Doing = DoingNone;
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} else if (arg == "EXCLUDE") {
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// Add this property to the current match rule.
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if (this->CurrentMatchRule) {
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this->CurrentMatchRule->Properties.Exclude = true;
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this->Doing = DoingNone;
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} else {
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this->NotBeforeMatch(arg);
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}
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} else if (arg == "PERMISSIONS") {
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if (this->CurrentMatchRule) {
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this->Doing = DoingPermissionsMatch;
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} else {
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this->NotBeforeMatch(arg);
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}
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} else if (arg == "FILE_PERMISSIONS") {
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if (this->CurrentMatchRule) {
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this->NotAfterMatch(arg);
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} else {
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this->Doing = DoingPermissionsFile;
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this->UseGivenPermissionsFile = true;
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}
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} else if (arg == "DIRECTORY_PERMISSIONS") {
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if (this->CurrentMatchRule) {
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this->NotAfterMatch(arg);
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} else {
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this->Doing = DoingPermissionsDir;
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this->UseGivenPermissionsDir = true;
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}
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} else if (arg == "USE_SOURCE_PERMISSIONS") {
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if (this->CurrentMatchRule) {
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this->NotAfterMatch(arg);
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} else {
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this->Doing = DoingNone;
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this->UseSourcePermissions = true;
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}
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} else if (arg == "NO_SOURCE_PERMISSIONS") {
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if (this->CurrentMatchRule) {
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this->NotAfterMatch(arg);
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} else {
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this->Doing = DoingNone;
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this->UseSourcePermissions = false;
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}
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} else if (arg == "FILES_MATCHING") {
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if (this->CurrentMatchRule) {
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this->NotAfterMatch(arg);
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} else {
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this->Doing = DoingNone;
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this->MatchlessFiles = false;
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}
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} else {
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return false;
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}
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return true;
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}
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bool cmFileCopier::CheckValue(std::string const& arg)
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{
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switch (this->Doing) {
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case DoingFiles:
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this->Files.push_back(arg);
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break;
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case DoingDestination:
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if (arg.empty() || cmSystemTools::FileIsFullPath(arg)) {
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this->Destination = arg;
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} else {
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this->Destination =
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cmStrCat(this->Makefile->GetCurrentBinaryDirectory(), '/', arg);
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}
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this->Doing = DoingNone;
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break;
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case DoingFilesFromDir:
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if (cmSystemTools::FileIsFullPath(arg)) {
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this->FilesFromDir = arg;
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} else {
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this->FilesFromDir =
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cmStrCat(this->Makefile->GetCurrentSourceDirectory(), '/', arg);
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}
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cmSystemTools::ConvertToUnixSlashes(this->FilesFromDir);
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this->Doing = DoingNone;
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break;
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case DoingPattern: {
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// Convert the pattern to a regular expression. Require a
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// leading slash and trailing end-of-string in the matched
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// string to make sure the pattern matches only whole file
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// names.
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std::string regex =
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cmStrCat('/', cmsys::Glob::PatternToRegex(arg, false), '$');
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this->MatchRules.emplace_back(regex);
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this->CurrentMatchRule = &*(this->MatchRules.end() - 1);
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if (this->CurrentMatchRule->Regex.is_valid()) {
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this->Doing = DoingNone;
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} else {
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std::ostringstream e;
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e << "could not compile PATTERN \"" << arg << "\".";
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this->Status.SetError(e.str());
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this->Doing = DoingError;
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}
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} break;
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case DoingRegex:
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this->MatchRules.emplace_back(arg);
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this->CurrentMatchRule = &*(this->MatchRules.end() - 1);
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if (this->CurrentMatchRule->Regex.is_valid()) {
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this->Doing = DoingNone;
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} else {
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std::ostringstream e;
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e << "could not compile REGEX \"" << arg << "\".";
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this->Status.SetError(e.str());
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this->Doing = DoingError;
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}
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break;
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case DoingPermissionsFile:
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if (!this->CheckPermissions(arg, this->FilePermissions)) {
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this->Doing = DoingError;
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}
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break;
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case DoingPermissionsDir:
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if (!this->CheckPermissions(arg, this->DirPermissions)) {
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this->Doing = DoingError;
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}
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break;
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case DoingPermissionsMatch:
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if (!this->CheckPermissions(
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arg, this->CurrentMatchRule->Properties.Permissions)) {
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this->Doing = DoingError;
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}
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break;
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default:
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return false;
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}
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return true;
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}
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bool cmFileCopier::Run(std::vector<std::string> const& args)
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{
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if (!this->Parse(args)) {
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return false;
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}
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for (std::string const& f : this->Files) {
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std::string file;
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if (!f.empty() && !cmSystemTools::FileIsFullPath(f)) {
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if (!this->FilesFromDir.empty()) {
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file = this->FilesFromDir;
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} else {
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file = this->Makefile->GetCurrentSourceDirectory();
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}
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file += "/";
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file += f;
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} else if (!this->FilesFromDir.empty()) {
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this->Status.SetError("option FILES_FROM_DIR requires all files "
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"to be specified as relative paths.");
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return false;
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} else {
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file = f;
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}
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// Split the input file into its directory and name components.
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std::vector<std::string> fromPathComponents;
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cmSystemTools::SplitPath(file, fromPathComponents);
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std::string fromName = *(fromPathComponents.end() - 1);
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std::string fromDir = cmSystemTools::JoinPath(
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fromPathComponents.begin(), fromPathComponents.end() - 1);
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// Compute the full path to the destination file.
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std::string toFile = this->Destination;
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if (!this->FilesFromDir.empty()) {
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std::string dir = cmSystemTools::GetFilenamePath(f);
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if (!dir.empty()) {
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toFile += "/";
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toFile += dir;
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}
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}
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std::string const& toName = this->ToName(fromName);
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if (!toName.empty()) {
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toFile += "/";
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toFile += toName;
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}
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// Construct the full path to the source file. The file name may
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// have been changed above.
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std::string fromFile = fromDir;
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if (!fromName.empty()) {
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fromFile += "/";
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fromFile += fromName;
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}
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if (!this->Install(fromFile, toFile)) {
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return false;
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}
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}
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return true;
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}
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bool cmFileCopier::Install(const std::string& fromFile,
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const std::string& toFile)
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{
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if (fromFile.empty()) {
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this->Status.SetError(
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"INSTALL encountered an empty string input file name.");
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return false;
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}
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// Collect any properties matching this file name.
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MatchProperties match_properties = this->CollectMatchProperties(fromFile);
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// Skip the file if it is excluded.
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if (match_properties.Exclude) {
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return true;
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}
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if (cmSystemTools::SameFile(fromFile, toFile)) {
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return true;
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}
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std::string newFromFile = fromFile;
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std::string newToFile = toFile;
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if (this->FollowSymlinkChain &&
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!this->InstallSymlinkChain(newFromFile, newToFile)) {
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return false;
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}
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if (cmSystemTools::FileIsSymlink(newFromFile)) {
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return this->InstallSymlink(newFromFile, newToFile);
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}
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if (cmSystemTools::FileIsDirectory(newFromFile)) {
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return this->InstallDirectory(newFromFile, newToFile, match_properties);
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}
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if (cmSystemTools::FileExists(newFromFile)) {
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return this->InstallFile(newFromFile, newToFile, match_properties);
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}
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return this->ReportMissing(newFromFile);
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}
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bool cmFileCopier::InstallSymlinkChain(std::string& fromFile,
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std::string& toFile)
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{
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std::string newFromFile;
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std::string toFilePath = cmSystemTools::GetFilenamePath(toFile);
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while (cmSystemTools::ReadSymlink(fromFile, newFromFile)) {
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if (!cmSystemTools::FileIsFullPath(newFromFile)) {
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std::string fromFilePath = cmSystemTools::GetFilenamePath(fromFile);
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newFromFile = cmStrCat(fromFilePath, "/", newFromFile);
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}
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std::string symlinkTarget = cmSystemTools::GetFilenameName(newFromFile);
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bool copy = true;
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if (!this->Always) {
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std::string oldSymlinkTarget;
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if (cmSystemTools::ReadSymlink(toFile, oldSymlinkTarget)) {
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if (symlinkTarget == oldSymlinkTarget) {
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copy = false;
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}
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}
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}
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this->ReportCopy(toFile, TypeLink, copy);
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if (copy) {
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cmSystemTools::RemoveFile(toFile);
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cmSystemTools::MakeDirectory(toFilePath);
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cmsys::Status status =
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cmSystemTools::CreateSymlinkQuietly(symlinkTarget, toFile);
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if (!status) {
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std::string e = cmStrCat(this->Name, " cannot create symlink\n ",
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toFile, "\nbecause: ", status.GetString());
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this->Status.SetError(e);
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return false;
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}
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}
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fromFile = newFromFile;
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toFile = cmStrCat(toFilePath, "/", symlinkTarget);
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}
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return true;
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}
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bool cmFileCopier::InstallSymlink(const std::string& fromFile,
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const std::string& toFile)
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{
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// Read the original symlink.
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std::string symlinkTarget;
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if (!cmSystemTools::ReadSymlink(fromFile, symlinkTarget)) {
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std::ostringstream e;
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e << this->Name << " cannot read symlink \"" << fromFile
|
|
<< "\" to duplicate at \"" << toFile
|
|
<< "\": " << cmSystemTools::GetLastSystemError() << ".";
|
|
this->Status.SetError(e.str());
|
|
return false;
|
|
}
|
|
|
|
// Compare the symlink value to that at the destination if not
|
|
// always installing.
|
|
bool copy = true;
|
|
if (!this->Always) {
|
|
std::string oldSymlinkTarget;
|
|
if (cmSystemTools::ReadSymlink(toFile, oldSymlinkTarget)) {
|
|
if (symlinkTarget == oldSymlinkTarget) {
|
|
copy = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Inform the user about this file installation.
|
|
this->ReportCopy(toFile, TypeLink, copy);
|
|
|
|
if (copy) {
|
|
// Remove the destination file so we can always create the symlink.
|
|
cmSystemTools::RemoveFile(toFile);
|
|
|
|
// Create destination directory if it doesn't exist
|
|
cmSystemTools::MakeDirectory(cmSystemTools::GetFilenamePath(toFile));
|
|
|
|
// Create the symlink.
|
|
cmsys::Status status =
|
|
cmSystemTools::CreateSymlinkQuietly(symlinkTarget, toFile);
|
|
if (!status) {
|
|
#ifdef _WIN32
|
|
bool const errorFileExists = status.GetWindows() == ERROR_FILE_EXISTS;
|
|
#else
|
|
bool const errorFileExists = status.GetPOSIX() == EEXIST;
|
|
#endif
|
|
std::string reason;
|
|
if (errorFileExists && cmSystemTools::FileIsDirectory(toFile)) {
|
|
reason = "A directory already exists at that location";
|
|
} else {
|
|
reason = status.GetString();
|
|
}
|
|
std::string e =
|
|
cmStrCat(this->Name, " cannot duplicate symlink\n ", fromFile,
|
|
"\nat\n ", toFile, "\nbecause: ", reason);
|
|
this->Status.SetError(e);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool cmFileCopier::InstallFile(const std::string& fromFile,
|
|
const std::string& toFile,
|
|
MatchProperties match_properties)
|
|
{
|
|
// Determine whether we will copy the file.
|
|
bool copy = true;
|
|
if (!this->Always) {
|
|
// If both files exist with the same time do not copy.
|
|
if (!this->FileTimes.DifferS(fromFile, toFile)) {
|
|
copy = false;
|
|
}
|
|
}
|
|
|
|
// Inform the user about this file installation.
|
|
this->ReportCopy(toFile, TypeFile, copy);
|
|
|
|
// Copy the file.
|
|
if (copy && !cmSystemTools::CopyAFile(fromFile, toFile, true)) {
|
|
std::ostringstream e;
|
|
e << this->Name << " cannot copy file \"" << fromFile << "\" to \""
|
|
<< toFile << "\": " << cmSystemTools::GetLastSystemError() << ".";
|
|
this->Status.SetError(e.str());
|
|
return false;
|
|
}
|
|
|
|
// Set the file modification time of the destination file.
|
|
if (copy && !this->Always) {
|
|
// Add write permission so we can set the file time.
|
|
// Permissions are set unconditionally below anyway.
|
|
mode_t perm = 0;
|
|
if (cmSystemTools::GetPermissions(toFile, perm)) {
|
|
cmSystemTools::SetPermissions(toFile, perm | mode_owner_write);
|
|
}
|
|
if (!cmFileTimes::Copy(fromFile, toFile)) {
|
|
std::ostringstream e;
|
|
e << this->Name << " cannot set modification time on \"" << toFile
|
|
<< "\": " << cmSystemTools::GetLastSystemError() << ".";
|
|
this->Status.SetError(e.str());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Set permissions of the destination file.
|
|
mode_t permissions =
|
|
(match_properties.Permissions ? match_properties.Permissions
|
|
: this->FilePermissions);
|
|
if (!permissions) {
|
|
// No permissions were explicitly provided but the user requested
|
|
// that the source file permissions be used.
|
|
cmSystemTools::GetPermissions(fromFile, permissions);
|
|
}
|
|
return this->SetPermissions(toFile, permissions);
|
|
}
|
|
|
|
bool cmFileCopier::InstallDirectory(const std::string& source,
|
|
const std::string& destination,
|
|
MatchProperties match_properties)
|
|
{
|
|
// Inform the user about this directory installation.
|
|
this->ReportCopy(destination, TypeDir,
|
|
!( // Report "Up-to-date:" for existing directories,
|
|
// but not symlinks to them.
|
|
cmSystemTools::FileIsDirectory(destination) &&
|
|
!cmSystemTools::FileIsSymlink(destination)));
|
|
|
|
// check if default dir creation permissions were set
|
|
mode_t default_dir_mode_v = 0;
|
|
mode_t* default_dir_mode = &default_dir_mode_v;
|
|
if (!this->GetDefaultDirectoryPermissions(&default_dir_mode)) {
|
|
return false;
|
|
}
|
|
|
|
// Make sure the destination directory exists.
|
|
if (!cmSystemTools::MakeDirectory(destination, default_dir_mode)) {
|
|
std::ostringstream e;
|
|
e << this->Name << " cannot make directory \"" << destination
|
|
<< "\": " << cmSystemTools::GetLastSystemError() << ".";
|
|
this->Status.SetError(e.str());
|
|
return false;
|
|
}
|
|
|
|
// Compute the requested permissions for the destination directory.
|
|
mode_t permissions =
|
|
(match_properties.Permissions ? match_properties.Permissions
|
|
: this->DirPermissions);
|
|
if (!permissions) {
|
|
// No permissions were explicitly provided but the user requested
|
|
// that the source directory permissions be used.
|
|
cmSystemTools::GetPermissions(source, permissions);
|
|
}
|
|
|
|
// Compute the set of permissions required on this directory to
|
|
// recursively install files and subdirectories safely.
|
|
mode_t required_permissions =
|
|
mode_owner_read | mode_owner_write | mode_owner_execute;
|
|
|
|
// If the required permissions are specified it is safe to set the
|
|
// final permissions now. Otherwise we must add the required
|
|
// permissions temporarily during file installation.
|
|
mode_t permissions_before = 0;
|
|
mode_t permissions_after = 0;
|
|
if ((permissions & required_permissions) == required_permissions) {
|
|
permissions_before = permissions;
|
|
} else {
|
|
permissions_before = permissions | required_permissions;
|
|
permissions_after = permissions;
|
|
}
|
|
|
|
// Set the required permissions of the destination directory.
|
|
if (!this->SetPermissions(destination, permissions_before)) {
|
|
return false;
|
|
}
|
|
|
|
// Load the directory contents to traverse it recursively.
|
|
cmsys::Directory dir;
|
|
if (!source.empty()) {
|
|
dir.Load(source);
|
|
}
|
|
unsigned long numFiles = static_cast<unsigned long>(dir.GetNumberOfFiles());
|
|
for (unsigned long fileNum = 0; fileNum < numFiles; ++fileNum) {
|
|
if (!(strcmp(dir.GetFile(fileNum), ".") == 0 ||
|
|
strcmp(dir.GetFile(fileNum), "..") == 0)) {
|
|
std::string fromPath = cmStrCat(source, '/', dir.GetFile(fileNum));
|
|
std::string toPath = cmStrCat(destination, '/', dir.GetFile(fileNum));
|
|
if (!this->Install(fromPath, toPath)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Set the requested permissions of the destination directory.
|
|
return this->SetPermissions(destination, permissions_after);
|
|
}
|