mirror of
https://blitiri.com.ar/repos/chasquid
synced 2025-12-17 14:37:02 +00:00
d086fbbb97
Today, the parsing functions are stand-alone since they don't need anything from the resolver. But in future patches, that will change. In anticipation of that, move those functions to be methods of the resolver.
515 lines
13 KiB
Go
515 lines
13 KiB
Go
package aliases
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import (
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"bytes"
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"errors"
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"os"
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"os/exec"
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"reflect"
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"strings"
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"testing"
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"blitiri.com.ar/go/chasquid/internal/trace"
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)
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type Cases []struct {
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addr string
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expect []Recipient
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err error
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}
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func (cases Cases) check(t *testing.T, r *Resolver) {
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t.Helper()
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tr := trace.New("test", "check")
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defer tr.Finish()
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for _, c := range cases {
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got, err := r.Resolve(tr, c.addr)
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if err != c.err {
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t.Errorf("case %q: expected error %v, got %v",
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c.addr, c.err, err)
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}
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if !reflect.DeepEqual(got, c.expect) {
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t.Errorf("case %q: got %+v, expected %+v",
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c.addr, got, c.expect)
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}
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}
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}
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func mustExist(t *testing.T, r *Resolver, addrs ...string) {
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t.Helper()
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tr := trace.New("test", "mustExist")
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defer tr.Finish()
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for _, addr := range addrs {
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if ok := r.Exists(tr, addr); !ok {
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t.Errorf("address %q does not exist, it should", addr)
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}
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}
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}
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func mustNotExist(t *testing.T, r *Resolver, addrs ...string) {
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t.Helper()
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tr := trace.New("test", "mustNotExist")
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defer tr.Finish()
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for _, addr := range addrs {
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if ok := r.Exists(tr, addr); ok {
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t.Errorf("address %q exists, it should not", addr)
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}
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}
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}
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func allUsersExist(tr *trace.Trace, user, domain string) (bool, error) {
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return true, nil
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}
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func usersWithXDontExist(tr *trace.Trace, user, domain string) (bool, error) {
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if strings.HasPrefix(user, "x") {
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return false, nil
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}
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return true, nil
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}
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var errUserLookup = errors.New("test error errUserLookup")
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func usersWithXErrorYDontExist(tr *trace.Trace, user, domain string) (bool, error) {
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if strings.HasPrefix(user, "x") {
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return false, errUserLookup
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}
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if strings.HasPrefix(user, "y") {
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return false, nil
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}
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return true, nil
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}
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func TestBasic(t *testing.T) {
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resolver := NewResolver(allUsersExist)
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resolver.AddDomain("localA")
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resolver.AddDomain("localB")
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resolver.aliases = map[string][]Recipient{
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"a@localA": {{"c@d", EMAIL}, {"e@localB", EMAIL}},
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"e@localB": {{"cmd", PIPE}},
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"cmd@localA": {{"x@y", EMAIL}},
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}
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cases := Cases{
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{"a@localA", []Recipient{{"c@d", EMAIL}, {"cmd", PIPE}}, nil},
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{"e@localB", []Recipient{{"cmd", PIPE}}, nil},
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{"x@y", []Recipient{{"x@y", EMAIL}}, nil},
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}
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cases.check(t, resolver)
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mustExist(t, resolver, "a@localA", "e@localB", "cmd@localA")
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mustNotExist(t, resolver, "x@y")
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}
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func TestCatchAll(t *testing.T) {
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resolver := NewResolver(usersWithXDontExist)
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resolver.AddDomain("dom")
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resolver.aliases = map[string][]Recipient{
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"a@dom": {{"a@remote", EMAIL}},
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"b@dom": {{"c@dom", EMAIL}},
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"c@dom": {{"cmd", PIPE}},
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"*@dom": {{"c@dom", EMAIL}},
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}
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cases := Cases{
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{"a@dom", []Recipient{{"a@remote", EMAIL}}, nil},
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{"b@dom", []Recipient{{"cmd", PIPE}}, nil},
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{"c@dom", []Recipient{{"cmd", PIPE}}, nil},
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{"x@dom", []Recipient{{"cmd", PIPE}}, nil},
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// Remote should be returned as-is regardless.
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{"a@remote", []Recipient{{"a@remote", EMAIL}}, nil},
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{"x@remote", []Recipient{{"x@remote", EMAIL}}, nil},
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}
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cases.check(t, resolver)
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mustExist(t, resolver,
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// Exist as users.
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"a@dom", "b@dom", "c@dom",
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// Do not exist as users, but catch-all saves them.
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"x@dom", "x1@dom")
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}
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func TestUserLookupErrors(t *testing.T) {
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resolver := NewResolver(usersWithXErrorYDontExist)
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resolver.AddDomain("dom")
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resolver.aliases = map[string][]Recipient{
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"a@dom": {{"a@remote", EMAIL}},
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"b@dom": {{"x@dom", EMAIL}},
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"*@dom": {{"x@dom", EMAIL}},
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}
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cases := Cases{
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{"a@dom", []Recipient{{"a@remote", EMAIL}}, nil},
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{"b@dom", nil, errUserLookup},
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{"c@dom", []Recipient{{"c@dom", EMAIL}}, nil},
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{"x@dom", nil, errUserLookup},
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// This one goes through the catch-all.
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{"y@dom", nil, errUserLookup},
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}
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cases.check(t, resolver)
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}
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func TestAddrRewrite(t *testing.T) {
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resolver := NewResolver(allUsersExist)
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resolver.AddDomain("def")
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resolver.AddDomain("p-q.com")
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resolver.aliases = map[string][]Recipient{
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"abc@def": {{"x@y", EMAIL}},
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"ñoño@def": {{"x@y", EMAIL}},
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"recu@def": {{"ab+cd@p-q.com", EMAIL}},
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"remo@def": {{"x-@y-z.com", EMAIL}},
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}
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resolver.DropChars = ".~"
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resolver.SuffixSep = "-+"
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cases := Cases{
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{"abc@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"a.b.c@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"a~b~c@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"a.b~c@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"abc-ñaca@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"abc-ñaca@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"abc-xyz@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"abc+xyz@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"abc-x.y+z@def", []Recipient{{"x@y", EMAIL}}, nil},
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{"ñ.o~ño-ñaca@def", []Recipient{{"x@y", EMAIL}}, nil},
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// Don't mess with the domain, even if it's known.
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{"a.bc-ñaca@p-q.com", []Recipient{{"abc@p-q.com", EMAIL}}, nil},
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// Clean the right hand side too (if it's a local domain).
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{"recu+blah@def", []Recipient{{"ab@p-q.com", EMAIL}}, nil},
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// We should not mess with emails for domains we don't know.
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{"xy@z.com", []Recipient{{"xy@z.com", EMAIL}}, nil},
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{"x.y@z.com", []Recipient{{"x.y@z.com", EMAIL}}, nil},
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{"x-@y-z.com", []Recipient{{"x-@y-z.com", EMAIL}}, nil},
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{"x+blah@y", []Recipient{{"x+blah@y", EMAIL}}, nil},
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{"remo@def", []Recipient{{"x-@y-z.com", EMAIL}}, nil},
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}
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cases.check(t, resolver)
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}
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func TestExists(t *testing.T) {
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resolver := NewResolver(allUsersExist)
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resolver.AddDomain("def")
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resolver.AddDomain("p-q.com")
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resolver.aliases = map[string][]Recipient{
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"abc@def": {{"x@y", EMAIL}},
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"ñoño@def": {{"x@y", EMAIL}},
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"recu@def": {{"ab+cd@p-q.com", EMAIL}},
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}
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resolver.DropChars = ".~"
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resolver.SuffixSep = "-+"
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mustExist(t, resolver,
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"abc@def",
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"abc+blah@def",
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"a.bc+blah@def",
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"a.b~c@def",
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"ñoño@def",
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"ño.ño@def",
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"recu@def",
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"re.cu@def")
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mustNotExist(t, resolver,
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"abc@d.ef",
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"nothere@def",
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"ex@def",
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"a.bc@unknown",
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"x.yz@def",
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"x.yz@d.ef",
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"abc@d.ef")
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}
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func TestRemoveDropsAndSuffix(t *testing.T) {
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resolver := NewResolver(allUsersExist)
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resolver.AddDomain("def")
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resolver.AddDomain("p-q.com")
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resolver.aliases = map[string][]Recipient{
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"abc@def": {{"x@y", EMAIL}},
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"ñoño@def": {{"x@y", EMAIL}},
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"recu@def": {{"ab+cd@p-q.com", EMAIL}},
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}
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resolver.DropChars = ".~"
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resolver.SuffixSep = "-+"
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cases := []struct {
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addr string
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want string
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}{
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{"abc@def", "abc@def"},
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{"abc+blah@def", "abc@def"},
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{"a.b~c@def", "abc@def"},
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{"a.bc+blah@def", "abc@def"},
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{"x.yz@def", "xyz@def"},
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{"x.yz@d.ef", "xyz@d.ef"},
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}
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for _, c := range cases {
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addr := resolver.RemoveDropsAndSuffix(c.addr)
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if addr != c.want {
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t.Errorf("RemoveDropsAndSuffix(%q): want %q, got %q",
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c.addr, c.want, addr)
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}
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}
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}
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func TestTooMuchRecursion(t *testing.T) {
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resolver := NewResolver(allUsersExist)
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resolver.AddDomain("b")
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resolver.AddDomain("d")
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resolver.aliases = map[string][]Recipient{
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"a@b": {{"c@d", EMAIL}},
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"c@d": {{"a@b", EMAIL}},
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}
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tr := trace.New("test", "TestTooMuchRecursion")
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defer tr.Finish()
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rs, err := resolver.Resolve(tr, "a@b")
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if err != ErrRecursionLimitExceeded {
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t.Errorf("expected ErrRecursionLimitExceeded, got %v", err)
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}
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if rs != nil {
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t.Errorf("expected nil recipients, got %+v", rs)
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}
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}
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func TestTooMuchRecursionOnCatchAll(t *testing.T) {
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resolver := NewResolver(usersWithXDontExist)
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resolver.AddDomain("dom")
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resolver.aliases = map[string][]Recipient{
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"a@dom": {{"x@dom", EMAIL}},
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"*@dom": {{"a@dom", EMAIL}},
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}
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cases := Cases{
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// b@dom is local and exists.
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{"b@dom", []Recipient{{"b@dom", EMAIL}}, nil},
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// a@remote is remote.
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{"a@remote", []Recipient{{"a@remote", EMAIL}}, nil},
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}
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cases.check(t, resolver)
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for _, addr := range []string{"a@dom", "x@dom", "xx@dom"} {
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tr := trace.New("TestTooMuchRecursionOnCatchAll", addr)
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defer tr.Finish()
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rs, err := resolver.Resolve(tr, addr)
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if err != ErrRecursionLimitExceeded {
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t.Errorf("%s: expected ErrRecursionLimitExceeded, got %v", addr, err)
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}
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if rs != nil {
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t.Errorf("%s: expected nil recipients, got %+v", addr, rs)
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}
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}
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}
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func mustWriteFile(t *testing.T, content string) string {
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f, err := os.CreateTemp("", "aliases_test")
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if err != nil {
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t.Fatalf("failed to get temp file: %v", err)
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}
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defer f.Close()
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_, err = f.WriteString(content)
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if err != nil {
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t.Fatalf("failed to write temp file: %v", err)
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}
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return f.Name()
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}
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func TestAddFile(t *testing.T) {
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cases := []struct {
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contents string
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expected []Recipient
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}{
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{"\n", []Recipient{{"a@dom", EMAIL}}},
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{" # Comment\n", []Recipient{{"a@dom", EMAIL}}},
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{":\n", []Recipient{{"a@dom", EMAIL}}},
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{"a: \n", []Recipient{{"a@dom", EMAIL}}},
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{"a@dom: b@c \n", []Recipient{{"a@dom", EMAIL}}},
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{"a: b\n", []Recipient{{"b@dom", EMAIL}}},
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{"a:b\n", []Recipient{{"b@dom", EMAIL}}},
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{"a : b \n", []Recipient{{"b@dom", EMAIL}}},
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{"a : b, \n", []Recipient{{"b@dom", EMAIL}}},
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{"a: |cmd\n", []Recipient{{"cmd", PIPE}}},
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{"a:|cmd\n", []Recipient{{"cmd", PIPE}}},
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{"a:| cmd \n", []Recipient{{"cmd", PIPE}}},
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{"a :| cmd \n", []Recipient{{"cmd", PIPE}}},
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{"a: | cmd arg1 arg2\n", []Recipient{{"cmd arg1 arg2", PIPE}}},
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{"a: c@d, e@f, g\n",
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[]Recipient{{"c@d", EMAIL}, {"e@f", EMAIL}, {"g@dom", EMAIL}}},
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// Invalid pipe aliases, should be ignored.
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{"a:|\n", []Recipient{{"a@dom", EMAIL}}},
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{"a:| \n", []Recipient{{"a@dom", EMAIL}}},
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}
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tr := trace.New("test", "TestAddFile")
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defer tr.Finish()
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for _, c := range cases {
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fname := mustWriteFile(t, c.contents)
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defer os.Remove(fname)
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resolver := NewResolver(allUsersExist)
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err := resolver.AddAliasesFile("dom", fname)
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if err != nil {
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t.Fatalf("error adding file: %v", err)
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}
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got, err := resolver.Resolve(tr, "a@dom")
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if err != nil {
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t.Errorf("case %q, got error: %v", c.contents, err)
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continue
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}
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if !reflect.DeepEqual(got, c.expected) {
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t.Errorf("case %q, got %v, expected %v", c.contents, got, c.expected)
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}
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}
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}
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const richFileContents = `
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# This is a "complex" alias file, with a few tricky situations.
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# It is used in TestRichFile.
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# First some valid cases.
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a: b
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c: d@e, f,
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x: | command
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# The following is invalid, should be ignored.
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a@dom: x@dom
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# Overrides.
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o1: a
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o1: b
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# Check that we normalize the right hand side.
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aA: bB@dom-B
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# Finally one to make the file NOT end in \n:
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y: z`
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func TestRichFile(t *testing.T) {
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fname := mustWriteFile(t, richFileContents)
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defer os.Remove(fname)
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resolver := NewResolver(allUsersExist)
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err := resolver.AddAliasesFile("dom", fname)
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if err != nil {
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t.Fatalf("failed to add file: %v", err)
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}
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cases := Cases{
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{"a@dom", []Recipient{{"b@dom", EMAIL}}, nil},
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{"c@dom", []Recipient{{"d@e", EMAIL}, {"f@dom", EMAIL}}, nil},
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{"x@dom", []Recipient{{"command", PIPE}}, nil},
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{"o1@dom", []Recipient{{"b@dom", EMAIL}}, nil},
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{"aA@dom", []Recipient{{"bb@dom-b", EMAIL}}, nil},
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{"aa@dom", []Recipient{{"bb@dom-b", EMAIL}}, nil},
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{"y@dom", []Recipient{{"z@dom", EMAIL}}, nil},
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}
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cases.check(t, resolver)
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}
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func TestManyFiles(t *testing.T) {
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files := map[string]string{
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"d1": mustWriteFile(t, "a: b\nc:d@e"),
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"domain2": mustWriteFile(t, "a: b\nc:d@e"),
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"dom3": mustWriteFile(t, "x: y, z"),
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"dom4": mustWriteFile(t, "a: |cmd"),
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// Cross-domain.
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"xd1": mustWriteFile(t, "a: b@xd2"),
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"xd2": mustWriteFile(t, "b: |cmd"),
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}
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for _, fname := range files {
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defer os.Remove(fname)
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}
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resolver := NewResolver(allUsersExist)
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for domain, fname := range files {
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err := resolver.AddAliasesFile(domain, fname)
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if err != nil {
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t.Fatalf("failed to add file: %v", err)
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}
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}
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check := func() {
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cases := Cases{
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{"a@d1", []Recipient{{"b@d1", EMAIL}}, nil},
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{"c@d1", []Recipient{{"d@e", EMAIL}}, nil},
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{"x@d1", []Recipient{{"x@d1", EMAIL}}, nil},
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{"a@domain2", []Recipient{{"b@domain2", EMAIL}}, nil},
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{"c@domain2", []Recipient{{"d@e", EMAIL}}, nil},
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{"x@dom3", []Recipient{{"y@dom3", EMAIL}, {"z@dom3", EMAIL}}, nil},
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{"a@dom4", []Recipient{{"cmd", PIPE}}, nil},
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{"a@xd1", []Recipient{{"cmd", PIPE}}, nil},
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}
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cases.check(t, resolver)
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}
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check()
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// Reload, and check again just in case.
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if err := resolver.Reload(); err != nil {
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t.Fatalf("failed to reload: %v", err)
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}
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check()
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}
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func TestHookError(t *testing.T) {
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tr := trace.New("TestHookError", "test")
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defer tr.Finish()
|
|
|
|
resolver := NewResolver(allUsersExist)
|
|
resolver.AddDomain("localA")
|
|
resolver.aliases = map[string][]Recipient{
|
|
"a@localA": {{"c@d", EMAIL}},
|
|
}
|
|
|
|
// First check that the test is set up reasonably.
|
|
mustExist(t, resolver, "a@localA")
|
|
Cases{
|
|
{"a@localA", []Recipient{{"c@d", EMAIL}}, nil},
|
|
}.check(t, resolver)
|
|
|
|
// Now use a resolver that exits with an error.
|
|
resolver.ResolveHook = "testdata/erroring-hook.sh"
|
|
|
|
// Check that the hook is run and the error is propagated.
|
|
mustNotExist(t, resolver, "a@localA")
|
|
rcpts, err := resolver.Resolve(tr, "a@localA")
|
|
if len(rcpts) != 0 {
|
|
t.Errorf("expected no recipients, got %v", rcpts)
|
|
}
|
|
execErr := &exec.ExitError{}
|
|
if !errors.As(err, &execErr) {
|
|
t.Errorf("expected *exec.ExitError, got %T - %v", err, err)
|
|
}
|
|
}
|
|
|
|
// Fuzz testing for the parser.
|
|
func FuzzReader(f *testing.F) {
|
|
resolver := NewResolver(allUsersExist)
|
|
resolver.AddDomain("domain")
|
|
resolver.DropChars = "."
|
|
resolver.SuffixSep = "-+"
|
|
f.Fuzz(func(t *testing.T, data []byte) {
|
|
resolver.parseReader("domain", bytes.NewReader(data))
|
|
})
|
|
}
|