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restic/internal/fs/sd_windows_test_helpers.go
2024-08-31 18:40:36 +02:00

126 lines
7.6 KiB
Go

//go:build windows
// +build windows
package fs
import (
"os/user"
"testing"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/test"
"golang.org/x/sys/windows"
)
var (
testFileSDs = []string{"AQAUvBQAAAAwAAAAAAAAAEwAAAABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvqAwAAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSarAQIAAAIAfAAEAAAAAAAkAKkAEgABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvtAwAAABAUAP8BHwABAQAAAAAABRIAAAAAEBgA/wEfAAECAAAAAAAFIAAAACACAAAAECQA/wEfAAEFAAAAAAAFFQAAAIifWK5WoILqzL0mq+oDAAA=",
"AQAUvBQAAAAwAAAAAAAAAEwAAAABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvqAwAAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSarAQIAAAIAyAAHAAAAAAAUAKkAEgABAQAAAAAABQcAAAAAABQAiQASAAEBAAAAAAAFBwAAAAAAJACpABIAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSar7QMAAAAAJAC/ARMAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSar6gMAAAAAFAD/AR8AAQEAAAAAAAUSAAAAAAAYAP8BHwABAgAAAAAABSAAAAAgAgAAAAAkAP8BHwABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvqAwAA",
"AQAUvBQAAAAwAAAA7AAAAEwAAAABBQAAAAAABRUAAAAvr7t03PyHGk2FokNHCAAAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSarAQIAAAIAoAAFAAAAAAAkAP8BHwABBQAAAAAABRUAAAAvr7t03PyHGk2FokNHCAAAAAAkAKkAEgABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvtAwAAABAUAP8BHwABAQAAAAAABRIAAAAAEBgA/wEfAAECAAAAAAAFIAAAACACAAAAECQA/wEfAAEFAAAAAAAFFQAAAIifWK5WoILqzL0mq+oDAAACAHQAAwAAAAKAJAC/AQIAAQUAAAAAAAUVAAAAL6+7dNz8hxpNhaJDtgQAAALAJAC/AQMAAQUAAAAAAAUVAAAAL6+7dNz8hxpNhaJDPgkAAAJAJAD/AQ8AAQUAAAAAAAUVAAAAL6+7dNz8hxpNhaJDtQQAAA==",
}
testDirSDs = []string{"AQAUvBQAAAAwAAAAAAAAAEwAAAABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvqAwAAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSarAQIAAAIAfAAEAAAAAAAkAKkAEgABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvtAwAAABMUAP8BHwABAQAAAAAABRIAAAAAExgA/wEfAAECAAAAAAAFIAAAACACAAAAEyQA/wEfAAEFAAAAAAAFFQAAAIifWK5WoILqzL0mq+oDAAA=",
"AQAUvBQAAAAwAAAAAAAAAEwAAAABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvqAwAAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSarAQIAAAIA3AAIAAAAAAIUAKkAEgABAQAAAAAABQcAAAAAAxQAiQASAAEBAAAAAAAFBwAAAAAAJACpABIAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSar7QMAAAAAJAC/ARMAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSar6gMAAAALFAC/ARMAAQEAAAAAAAMAAAAAABMUAP8BHwABAQAAAAAABRIAAAAAExgA/wEfAAECAAAAAAAFIAAAACACAAAAEyQA/wEfAAEFAAAAAAAFFQAAAIifWK5WoILqzL0mq+oDAAA=",
"AQAUvBQAAAAwAAAA7AAAAEwAAAABBQAAAAAABRUAAAAvr7t03PyHGk2FokNHCAAAAQUAAAAAAAUVAAAAiJ9YrlaggurMvSarAQIAAAIAoAAFAAAAAAAkAP8BHwABBQAAAAAABRUAAAAvr7t03PyHGk2FokNHCAAAAAAkAKkAEgABBQAAAAAABRUAAACIn1iuVqCC6sy9JqvtAwAAABMUAP8BHwABAQAAAAAABRIAAAAAExgA/wEfAAECAAAAAAAFIAAAACACAAAAEyQA/wEfAAEFAAAAAAAFFQAAAIifWK5WoILqzL0mq+oDAAACAHQAAwAAAAKAJAC/AQIAAQUAAAAAAAUVAAAAL6+7dNz8hxpNhaJDtgQAAALAJAC/AQMAAQUAAAAAAAUVAAAAL6+7dNz8hxpNhaJDPgkAAAJAJAD/AQ8AAQUAAAAAAAUVAAAAL6+7dNz8hxpNhaJDtQQAAA==",
}
)
// isAdmin checks if current user is an administrator.
func isAdmin() (isAdmin bool, err error) {
var sid *windows.SID
err = windows.AllocateAndInitializeSid(&windows.SECURITY_NT_AUTHORITY, 2, windows.SECURITY_BUILTIN_DOMAIN_RID, windows.DOMAIN_ALIAS_RID_ADMINS,
0, 0, 0, 0, 0, 0, &sid)
if err != nil {
return false, errors.Errorf("sid error: %s", err)
}
windows.GetCurrentProcessToken()
token := windows.Token(0)
member, err := token.IsMember(sid)
if err != nil {
return false, errors.Errorf("token membership error: %s", err)
}
return member, nil
}
// compareSecurityDescriptors runs tests for comparing 2 security descriptors in []byte format.
func compareSecurityDescriptors(t *testing.T, testPath string, sdInputBytes, sdOutputBytes []byte) {
sdInput, err := securityDescriptorBytesToStruct(sdInputBytes)
test.OK(t, errors.Wrapf(err, "Error converting SD to struct for: %s", testPath))
sdOutput, err := securityDescriptorBytesToStruct(sdOutputBytes)
test.OK(t, errors.Wrapf(err, "Error converting SD to struct for: %s", testPath))
isAdmin, err := isAdmin()
test.OK(t, errors.Wrapf(err, "Error checking if user is admin: %s", testPath))
var ownerExpected *windows.SID
var defaultedOwnerExpected bool
var groupExpected *windows.SID
var defaultedGroupExpected bool
var daclExpected *windows.ACL
var defaultedDaclExpected bool
var saclExpected *windows.ACL
var defaultedSaclExpected bool
// The Dacl is set correctly whether or not application is running as admin.
daclExpected, defaultedDaclExpected, err = sdInput.DACL()
test.OK(t, errors.Wrapf(err, "Error getting input dacl for: %s", testPath))
if isAdmin {
// If application is running as admin, all sd values including owner, group, dacl, sacl are set correctly during restore.
// Hence we will use the input values for comparison with the output values.
ownerExpected, defaultedOwnerExpected, err = sdInput.Owner()
test.OK(t, errors.Wrapf(err, "Error getting input owner for: %s", testPath))
groupExpected, defaultedGroupExpected, err = sdInput.Group()
test.OK(t, errors.Wrapf(err, "Error getting input group for: %s", testPath))
saclExpected, defaultedSaclExpected, err = sdInput.SACL()
test.OK(t, errors.Wrapf(err, "Error getting input sacl for: %s", testPath))
} else {
// If application is not running as admin, owner and group are set as current user's SID/GID during restore and sacl is empty.
// Get the current user
user, err := user.Current()
test.OK(t, errors.Wrapf(err, "Could not get current user for: %s", testPath))
// Get current user's SID
currentUserSID, err := windows.StringToSid(user.Uid)
test.OK(t, errors.Wrapf(err, "Error getting output group for: %s", testPath))
// Get current user's Group SID
currentGroupSID, err := windows.StringToSid(user.Gid)
test.OK(t, errors.Wrapf(err, "Error getting output group for: %s", testPath))
// Set owner and group as current user's SID and GID during restore.
ownerExpected = currentUserSID
defaultedOwnerExpected = false
groupExpected = currentGroupSID
defaultedGroupExpected = false
// If application is not running as admin, SACL is returned empty.
saclExpected = nil
defaultedSaclExpected = false
}
// Now do all the comparisons
// Get owner SID from output file
ownerOut, defaultedOwnerOut, err := sdOutput.Owner()
test.OK(t, errors.Wrapf(err, "Error getting output owner for: %s", testPath))
// Compare owner SIDs. We must use the Equals method for comparison as a syscall is made for comparing SIDs.
test.Assert(t, ownerExpected.Equals(ownerOut), "Owner from SDs read from test path don't match: %s, cur:%s, exp: %s", testPath, ownerExpected.String(), ownerOut.String())
test.Equals(t, defaultedOwnerExpected, defaultedOwnerOut, "Defaulted for owner from SDs read from test path don't match: %s", testPath)
// Get group SID from output file
groupOut, defaultedGroupOut, err := sdOutput.Group()
test.OK(t, errors.Wrapf(err, "Error getting output group for: %s", testPath))
// Compare group SIDs. We must use the Equals method for comparison as a syscall is made for comparing SIDs.
test.Assert(t, groupExpected.Equals(groupOut), "Group from SDs read from test path don't match: %s, cur:%s, exp: %s", testPath, groupExpected.String(), groupOut.String())
test.Equals(t, defaultedGroupExpected, defaultedGroupOut, "Defaulted for group from SDs read from test path don't match: %s", testPath)
// Get dacl from output file
daclOut, defaultedDaclOut, err := sdOutput.DACL()
test.OK(t, errors.Wrapf(err, "Error getting output dacl for: %s", testPath))
// Compare dacls
test.Equals(t, daclExpected, daclOut, "DACL from SDs read from test path don't match: %s", testPath)
test.Equals(t, defaultedDaclExpected, defaultedDaclOut, "Defaulted for DACL from SDs read from test path don't match: %s", testPath)
// Get sacl from output file
saclOut, defaultedSaclOut, err := sdOutput.SACL()
test.OK(t, errors.Wrapf(err, "Error getting output sacl for: %s", testPath))
// Compare sacls
test.Equals(t, saclExpected, saclOut, "DACL from SDs read from test path don't match: %s", testPath)
test.Equals(t, defaultedSaclExpected, defaultedSaclOut, "Defaulted for SACL from SDs read from test path don't match: %s", testPath)
}