/usr/share/gocode/src/github.com/seccomp/libseccomp-golang/seccomp_test.go is in golang-github-seccomp-libseccomp-golang-dev 0.9.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Tests for public API of libseccomp Go bindings
package seccomp
import (
"fmt"
"syscall"
"testing"
)
// Type Function Tests
type versionErrorTest struct {
err VersionError
str string
}
var versionStr = fmt.Sprintf("%d.%d.%d", verMajor, verMinor, verMicro)
var versionErrorTests = []versionErrorTest{
{
VersionError{
"deadbeef",
"x.y.z",
},
"Libseccomp version too low: deadbeef: " +
"minimum supported is x.y.z: detected " + versionStr,
},
{
VersionError{
"",
"x.y.z",
},
"Libseccomp version too low: minimum supported is x.y.z: " +
"detected " + versionStr,
},
{
VersionError{
"deadbeef",
"",
},
"Libseccomp version too low: " +
"deadbeef: minimum supported is 2.1.0: " +
"detected " + versionStr,
},
{
VersionError{
"",
"",
},
"Libseccomp version too low: minimum supported is 2.1.0: " +
"detected " + versionStr,
},
}
func TestVersionError(t *testing.T) {
for i, test := range versionErrorTests {
str := test.err.Error()
if str != test.str {
t.Errorf("VersionError %d: got %q: expected %q", i, str, test.str)
}
}
}
func TestActionSetReturnCode(t *testing.T) {
if ActInvalid.SetReturnCode(0x0010) != ActInvalid {
t.Errorf("Able to set a return code on invalid action!")
}
codeSet := ActErrno.SetReturnCode(0x0001)
if codeSet == ActErrno || codeSet.GetReturnCode() != 0x0001 {
t.Errorf("Could not set return code on ActErrno")
}
}
func TestSyscallGetName(t *testing.T) {
call1 := ScmpSyscall(0x1)
callFail := ScmpSyscall(0x999)
name, err := call1.GetName()
if err != nil {
t.Errorf("Error getting syscall name for number 0x1")
} else if len(name) == 0 {
t.Errorf("Empty name returned for syscall 0x1")
}
fmt.Printf("Got name of syscall 0x1 on native arch as %s\n", name)
_, err = callFail.GetName()
if err == nil {
t.Errorf("Getting nonexistant syscall should error!")
}
}
func TestSyscallGetNameByArch(t *testing.T) {
call1 := ScmpSyscall(0x1)
callInvalid := ScmpSyscall(0x999)
archGood := ArchAMD64
archBad := ArchInvalid
name, err := call1.GetNameByArch(archGood)
if err != nil {
t.Errorf("Error getting syscall name for number 0x1 and arch AMD64")
} else if name != "write" {
t.Errorf("Got incorrect name for syscall 0x1 - expected write, got %s", name)
}
_, err = call1.GetNameByArch(archBad)
if err == nil {
t.Errorf("Bad architecture GetNameByArch() should error!")
}
_, err = callInvalid.GetNameByArch(archGood)
if err == nil {
t.Errorf("Bad syscall GetNameByArch() should error!")
}
_, err = callInvalid.GetNameByArch(archBad)
if err == nil {
t.Errorf("Bad syscall and bad arch GetNameByArch() should error!")
}
}
func TestGetSyscallFromName(t *testing.T) {
name1 := "write"
nameInval := "NOTASYSCALL"
syscall, err := GetSyscallFromName(name1)
if err != nil {
t.Errorf("Error getting syscall number of write: %s", err)
}
fmt.Printf("Got syscall number of write on native arch as %d\n", syscall)
_, err = GetSyscallFromName(nameInval)
if err == nil {
t.Errorf("Getting an invalid syscall should error!")
}
}
func TestGetSyscallFromNameByArch(t *testing.T) {
name1 := "write"
nameInval := "NOTASYSCALL"
arch1 := ArchAMD64
archInval := ArchInvalid
syscall, err := GetSyscallFromNameByArch(name1, arch1)
if err != nil {
t.Errorf("Error getting syscall number of write on AMD64: %s", err)
}
fmt.Printf("Got syscall number of write on AMD64 as %d\n", syscall)
_, err = GetSyscallFromNameByArch(nameInval, arch1)
if err == nil {
t.Errorf("Getting invalid syscall with valid arch should error")
}
_, err = GetSyscallFromNameByArch(name1, archInval)
if err == nil {
t.Errorf("Getting valid syscall for invalid arch should error")
}
_, err = GetSyscallFromNameByArch(nameInval, archInval)
if err == nil {
t.Errorf("Getting invalid syscall for invalid arch should error")
}
}
func TestMakeCondition(t *testing.T) {
condition, err := MakeCondition(3, CompareNotEqual, 0x10)
if err != nil {
t.Errorf("Error making condition struct: %s", err)
} else if condition.Argument != 3 || condition.Operand1 != 0x10 ||
condition.Operand2 != 0 || condition.Op != CompareNotEqual {
t.Errorf("Condition struct was filled incorrectly")
}
condition, err = MakeCondition(3, CompareMaskedEqual, 0x10, 0x20)
if err != nil {
t.Errorf("Error making condition struct: %s", err)
} else if condition.Argument != 3 || condition.Operand1 != 0x10 ||
condition.Operand2 != 0x20 || condition.Op != CompareMaskedEqual {
t.Errorf("Condition struct was filled incorrectly")
}
_, err = MakeCondition(7, CompareNotEqual, 0x10)
if err == nil {
t.Errorf("Condition struct with bad syscall argument number should error")
}
_, err = MakeCondition(3, CompareInvalid, 0x10)
if err == nil {
t.Errorf("Condition struct with bad comparison operator should error")
}
_, err = MakeCondition(3, CompareMaskedEqual, 0x10, 0x20, 0x30)
if err == nil {
t.Errorf("MakeCondition with more than 2 arguments should fail")
}
_, err = MakeCondition(3, CompareMaskedEqual)
if err == nil {
t.Errorf("MakeCondition with no arguments should fail")
}
}
// Utility Function Tests
func TestGetNativeArch(t *testing.T) {
arch, err := GetNativeArch()
if err != nil {
t.Errorf("GetNativeArch should not error!")
}
fmt.Printf("Got native arch of system as %s\n", arch.String())
}
// Filter Tests
func TestFilterCreateRelease(t *testing.T) {
_, err := NewFilter(ActInvalid)
if err == nil {
t.Errorf("Can create filter with invalid action")
}
filter, err := NewFilter(ActKill)
if err != nil {
t.Errorf("Error creating filter: %s", err)
}
if !filter.IsValid() {
t.Errorf("Filter created by NewFilter was not valid")
}
filter.Release()
if filter.IsValid() {
t.Errorf("Filter is valid after being released")
}
}
func TestFilterReset(t *testing.T) {
filter, err := NewFilter(ActKill)
if err != nil {
t.Errorf("Error creating filter: %s", err)
}
defer filter.Release()
// Ensure the default action is ActKill
action, err := filter.GetDefaultAction()
if err != nil {
t.Errorf("Error getting default action of filter")
} else if action != ActKill {
t.Errorf("Default action of filter was set incorrectly!")
}
// Reset with a different default action
err = filter.Reset(ActAllow)
if err != nil {
t.Errorf("Error resetting filter!")
}
valid := filter.IsValid()
if !valid {
t.Errorf("Filter is no longer valid after reset!")
}
// The default action should no longer be ActKill
action, err = filter.GetDefaultAction()
if err != nil {
t.Errorf("Error getting default action of filter")
} else if action != ActAllow {
t.Errorf("Default action of filter was set incorrectly!")
}
}
func TestFilterArchFunctions(t *testing.T) {
filter, err := NewFilter(ActKill)
if err != nil {
t.Errorf("Error creating filter: %s", err)
}
defer filter.Release()
arch, err := GetNativeArch()
if err != nil {
t.Errorf("Error getting native architecture: %s", err)
}
present, err := filter.IsArchPresent(arch)
if err != nil {
t.Errorf("Error retrieving arch from filter: %s", err)
} else if !present {
t.Errorf("Filter does not contain native architecture by default")
}
// Adding the native arch again should succeed, as it's already present
err = filter.AddArch(arch)
if err != nil {
t.Errorf("Adding arch to filter already containing it should succeed")
}
// Make sure we don't add the native arch again
prospectiveArch := ArchX86
if arch == ArchX86 {
prospectiveArch = ArchAMD64
}
// Check to make sure this other arch isn't in the filter
present, err = filter.IsArchPresent(prospectiveArch)
if err != nil {
t.Errorf("Error retrieving arch from filter: %s", err)
} else if present {
t.Errorf("Arch not added to filter is present")
}
// Try removing the nonexistant arch - should succeed
err = filter.RemoveArch(prospectiveArch)
if err != nil {
t.Errorf("Error removing nonexistant arch: %s", err)
}
// Add an arch, see if it's in the filter
err = filter.AddArch(prospectiveArch)
if err != nil {
t.Errorf("Could not add arch %s to filter: %s",
prospectiveArch.String(), err)
}
present, err = filter.IsArchPresent(prospectiveArch)
if err != nil {
t.Errorf("Error retrieving arch from filter: %s", err)
} else if !present {
t.Errorf("Filter does not contain architecture %s after it was added",
prospectiveArch.String())
}
// Remove the arch again, make sure it's not in the filter
err = filter.RemoveArch(prospectiveArch)
if err != nil {
t.Errorf("Could not remove arch %s from filter: %s",
prospectiveArch.String(), err)
}
present, err = filter.IsArchPresent(prospectiveArch)
if err != nil {
t.Errorf("Error retrieving arch from filter: %s", err)
} else if present {
t.Errorf("Filter contains architecture %s after it was removed",
prospectiveArch.String())
}
}
func TestFilterAttributeGettersAndSetters(t *testing.T) {
filter, err := NewFilter(ActKill)
if err != nil {
t.Errorf("Error creating filter: %s", err)
}
defer filter.Release()
act, err := filter.GetDefaultAction()
if err != nil {
t.Errorf("Error getting default action: %s", err)
} else if act != ActKill {
t.Errorf("Default action was set incorrectly")
}
err = filter.SetBadArchAction(ActAllow)
if err != nil {
t.Errorf("Error setting bad arch action: %s", err)
}
act, err = filter.GetBadArchAction()
if err != nil {
t.Errorf("Error getting bad arch action")
} else if act != ActAllow {
t.Errorf("Bad arch action was not set correcly!")
}
err = filter.SetNoNewPrivsBit(false)
if err != nil {
t.Errorf("Error setting no new privileges bit")
}
privs, err := filter.GetNoNewPrivsBit()
if err != nil {
t.Errorf("Error getting no new privileges bit!")
} else if privs != false {
t.Errorf("No new privileges bit was not set correctly")
}
err = filter.SetBadArchAction(ActInvalid)
if err == nil {
t.Errorf("Setting bad arch action to an invalid action should error")
}
}
func TestMergeFilters(t *testing.T) {
filter1, err := NewFilter(ActAllow)
if err != nil {
t.Errorf("Error creating filter: %s", err)
}
filter2, err := NewFilter(ActAllow)
if err != nil {
t.Errorf("Error creating filter: %s", err)
}
// Need to remove the native arch and add another to the second filter
// Filters must NOT share architectures to be successfully merged
nativeArch, err := GetNativeArch()
if err != nil {
t.Errorf("Error getting native arch: %s", err)
}
prospectiveArch := ArchAMD64
if nativeArch == ArchAMD64 {
prospectiveArch = ArchX86
}
err = filter2.AddArch(prospectiveArch)
if err != nil {
t.Errorf("Error adding architecture to filter: %s", err)
}
err = filter2.RemoveArch(nativeArch)
if err != nil {
t.Errorf("Error removing architecture from filter: %s", err)
}
err = filter1.Merge(filter2)
if err != nil {
t.Errorf("Error merging filters: %s", err)
}
if filter2.IsValid() {
t.Errorf("Source filter should not be valid after merging")
}
filter3, err := NewFilter(ActKill)
if err != nil {
t.Errorf("Error creating filter: %s", err)
}
defer filter3.Release()
err = filter1.Merge(filter3)
if err == nil {
t.Errorf("Attributes should have to match to merge filters")
}
}
func TestRuleAddAndLoad(t *testing.T) {
// Test #1: Add a trivial filter
filter1, err := NewFilter(ActAllow)
if err != nil {
t.Errorf("Error creating filter: %s", err)
}
defer filter1.Release()
call, err := GetSyscallFromName("getpid")
if err != nil {
t.Errorf("Error getting syscall number of getpid: %s", err)
}
call2, err := GetSyscallFromName("setreuid")
if err != nil {
t.Errorf("Error getting syscall number of setreuid: %s", err)
}
call3, err := GetSyscallFromName("setreuid32")
if err != nil {
t.Errorf("Error getting syscall number of setreuid32: %s", err)
}
uid := syscall.Getuid()
euid := syscall.Geteuid()
err = filter1.AddRule(call, ActErrno.SetReturnCode(0x1))
if err != nil {
t.Errorf("Error adding rule to restrict syscall: %s", err)
}
cond, err := MakeCondition(1, CompareEqual, uint64(euid))
if err != nil {
t.Errorf("Error making rule to restrict syscall: %s", err)
}
cond2, err := MakeCondition(0, CompareEqual, uint64(uid))
if err != nil {
t.Errorf("Error making rule to restrict syscall: %s", err)
}
conditions := []ScmpCondition{cond, cond2}
err = filter1.AddRuleConditional(call2, ActErrno.SetReturnCode(0x2), conditions)
if err != nil {
t.Errorf("Error adding conditional rule: %s", err)
}
err = filter1.AddRuleConditional(call3, ActErrno.SetReturnCode(0x3), conditions)
if err != nil {
t.Errorf("Error adding second conditional rule: %s", err)
}
err = filter1.Load()
if err != nil {
t.Errorf("Error loading filter: %s", err)
}
// Try making a simple syscall, it should error
pid := syscall.Getpid()
if pid != -1 {
t.Errorf("Syscall should have returned error code!")
}
// Try making a Geteuid syscall that should normally succeed
err = syscall.Setreuid(uid, euid)
if err == nil {
t.Errorf("Syscall should have returned error code!")
} else if err != syscall.Errno(2) && err != syscall.Errno(3) {
t.Errorf("Syscall returned incorrect error code - likely not blocked by Seccomp!")
}
}
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