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Fix another hosts.Remove() issue #48

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merged 9 commits into from
Dec 20, 2023
Merged

Fix another hosts.Remove() issue #48

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efbc6ad
Revert "Fix slice bounds out of range error on remove host entries"
cfergeau Dec 18, 2023
6968dac
tests: Add final content check to TestDeleteSliceBoundErrorOnRemove
cfergeau Dec 18, 2023
3250568
tests: Simplify/rename TestDeleteSliceBoundErrorOnRemove
cfergeau Dec 18, 2023
9ab5cab
tests: Add TestRemoveMultipleBackwardsSameLine test
cfergeau Dec 18, 2023
6224f67
hosts.Remove: Fix TestRemoveMultiple*SameLine
cfergeau Dec 18, 2023
e33a5bd
hosts.Remove: Fix line removal with multiple hosts args
cfergeau Dec 18, 2023
c26b39b
hosts.Remove: Simplify host deduplication code
cfergeau Dec 18, 2023
ed2086c
tests: Add removal test when there is no crc section
cfergeau Dec 18, 2023
ed0da28
tests: Use testing.TempDir()
cfergeau Dec 18, 2023
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18 changes: 11 additions & 7 deletions pkg/hosts/hosts.go
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Original file line number Diff line number Diff line change
Expand Up @@ -173,25 +173,29 @@ func (h *Hosts) Remove(hosts []string) error {
return err
}

var hostEntries = make(map[string]struct{})
for _, key := range hosts {
hostEntries[key] = struct{}{}
}

start, end := h.findCrcSection()

h.Lock()
defer h.Unlock()
// delete from CRC section
if start > 0 && end > 0 {
for i := start; i < end; i++ {
for i := end - 1; i >= start; i-- {
line := h.File.GetHostsFileLineByRow(i)
if line.Type == libhosty.LineTypeComment {
continue
}

for _, hostToRemove := range hosts {
for hostIdx, hostname := range line.Hostnames {
if hostname == hostToRemove {
h.removeHostFromLine(line, hostIdx, i)
break
}
for hostIdx := len(line.Hostnames) - 1; hostIdx >= 0; hostIdx-- {
hostname := line.Hostnames[hostIdx]
if _, ok := hostEntries[hostname]; ok {
h.removeHostFromLine(line, hostIdx, i)
}

}
}
} else {
Expand Down
126 changes: 59 additions & 67 deletions pkg/hosts/hosts_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,11 +22,7 @@ const (
)

func TestAdd(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(`127.0.0.1 entry1`), 0600))

host := hosts(t, hostsFile)
Expand All @@ -40,11 +36,7 @@ func TestAdd(t *testing.T) {
}

func TestAddMoreThen9Hosts(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate), 0600))

host := hosts(t, hostsFile)
Expand All @@ -57,11 +49,7 @@ func TestAddMoreThen9Hosts(t *testing.T) {
}

func TestAddMoreThan18Hosts(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate), 0600))

host := hosts(t, hostsFile)
Expand All @@ -75,11 +63,7 @@ func TestAddMoreThan18Hosts(t *testing.T) {
}

func TestAddMoreThen9HostsInMultipleLines(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+crcSection("127.0.0.1 entry1 entry10 entry2 entry3 entry4 entry5 entry6 entry7", "127.0.0.1 entry11 entry12 entry13 entry14 entry15 entry16 entry17 entry18")+eol()), 0600))

host := hosts(t, hostsFile)
Expand All @@ -92,11 +76,7 @@ func TestAddMoreThen9HostsInMultipleLines(t *testing.T) {
}

func TestRemove(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate), 0600))

host := hosts(t, hostsFile)
Expand All @@ -110,11 +90,7 @@ func TestRemove(t *testing.T) {
}

func TestClean(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+crcSection("127.0.0.1 entry1.suffix1 entry2.suffix2")), 0600))

host := hosts(t, hostsFile)
Expand All @@ -127,11 +103,7 @@ func TestClean(t *testing.T) {
}

func TestCleanWithoutCrcSection(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate), 0600))

host := hosts(t, hostsFile)
Expand All @@ -144,11 +116,7 @@ func TestCleanWithoutCrcSection(t *testing.T) {
}

func TestContains(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(`127.0.0.1 entry1.suffix1 entry2.suffix2`), 0600))

host := hosts(t, hostsFile)
Expand All @@ -159,11 +127,7 @@ func TestContains(t *testing.T) {
}

func TestSuffixFilter(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(`127.0.0.1 localhost localhost.localdomain`), 0600))

config, _ := libhosty.NewHostsFileConfig(hostsFile)
Expand All @@ -184,11 +148,7 @@ func TestSuffixFilter(t *testing.T) {
}

func TestAddMoreThan9HostsWithFullLine(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+crcSection("127.0.0.1 entry1 entry2 entry3 entry4 entry5 entry6 entry7 entry8 entry9")+eol()), 0600))

host := hosts(t, hostsFile)
Expand All @@ -201,11 +161,7 @@ func TestAddMoreThan9HostsWithFullLine(t *testing.T) {
}

func TestAddMoreThan9HostsWithOverfullLine(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+crcSection("127.0.0.1 entry1 entry2 entry3 entry4 entry5 entry6 entry7 entry8 entry9 entry10")+eol()), 0600))

host := hosts(t, hostsFile)
Expand All @@ -218,11 +174,7 @@ func TestAddMoreThan9HostsWithOverfullLine(t *testing.T) {
}

func TestRemoveOnOldHostFile(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
assert.NoError(t, err)
defer os.RemoveAll(dir)

hostsFile := filepath.Join(dir, "hosts")
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+"127.0.0.1 entry1 entry2"), 0600))

host := hosts(t, hostsFile)
Expand All @@ -234,16 +186,52 @@ func TestRemoveOnOldHostFile(t *testing.T) {
assert.Equal(t, hostsTemplate, string(content))
}

func TestDeleteSliceBoundErrorOnRemove(t *testing.T) {
dir, err := os.MkdirTemp("", "hosts")
func TestRemoveMultipleForwardSameLine(t *testing.T) {
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+crcSection("192.168.130.11 entry1 entry2")), 0600))
host := hosts(t, hostsFile)

assert.NoError(t, host.Remove([]string{"entry1", "entry2"}))

content, err := os.ReadFile(hostsFile)
assert.NoError(t, err)
assert.Equal(t, hostsTemplate+eol()+crcSection(), string(content))
}

func TestRemoveMultipleBackwardsSameLine(t *testing.T) {
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+crcSection("192.168.130.11 entry1 entry2")), 0600))
host := hosts(t, hostsFile)

assert.NoError(t, host.Remove([]string{"entry2", "entry1"}))

content, err := os.ReadFile(hostsFile)
assert.NoError(t, err)
defer os.RemoveAll(dir)
assert.Equal(t, hostsTemplate+eol()+crcSection(), string(content))
}

func TestRemoveMultipleLines(t *testing.T) {
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+crcSection("192.168.130.11 api.crc.testing", "192.168.130.11 oauth-openshift.apps-crc.testing")), 0600))
host := hosts(t, hostsFile)

assert.NoError(t, host.Remove([]string{"api.crc.testing", "oauth-openshift.apps-crc.testing"}))

content, err := os.ReadFile(hostsFile)
assert.NoError(t, err)
assert.Equal(t, hostsTemplate+eol()+crcSection(), string(content))
}

hostsFile := filepath.Join(dir, "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte(hostsTemplate+eol()+crcSection("192.168.130.11 api.crc.testing canary-openshift-ingress-canary.apps-crc.testing console-openshift-console.apps-crc.testing default-route-openshift-image-registry.apps-crc.testing downloads-openshift-console.apps-crc.testing oauth-openshift.apps-crc.testing")), 0600))
func TestRemoveMultipleNoCrcSection(t *testing.T) {
hostsFile := filepath.Join(t.TempDir(), "hosts")
assert.NoError(t, os.WriteFile(hostsFile, []byte("192.168.130.11 entry1 entry2"+eol()+"192.168.130.11 entry3 entry4"), 0600))
host := hosts(t, hostsFile)

assert.NoError(t, host.Remove([]string{"api.crc.testing", "oauth-openshift.apps-crc.testing", "console-openshift-console.apps-crc.testing", "downloads-openshift-console.apps-crc.testing", "canary-openshift-ingress-canary.apps-crc.testing", "default-route-openshift-image-registry.apps-crc.testing"}))
assert.NoError(t, host.Remove([]string{"entry1", "entry2", "entry3", "entry4"}))

content, err := os.ReadFile(hostsFile)
assert.NoError(t, err)
assert.Equal(t, "", string(content))
}

func hosts(t *testing.T, hostsFile string) Hosts {
Expand All @@ -266,5 +254,9 @@ func eol() string {
}

func crcSection(lines ...string) string {
return fmt.Sprintf("# Added by CRC"+eol()+"%s"+eol()+"# End of CRC section", strings.Join(lines, eol()))
var content = ""
if len(lines) != 0 {
content = strings.Join(lines, eol()) + eol()
}
return fmt.Sprintf("# Added by CRC"+eol()+"%s"+"# End of CRC section", content)
}