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Pull request: 1577: rewrite edit http api

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Merge in DNS/adguard-home from 1577-rewrite-edit to master

Squashed commit of the following:

commit d03bee2a14337d169eea950b3df18a447c02b422
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Fri May 12 12:54:15 2023 +0300

    filtering: imp tests

commit bd68320df6dc057d922d91551cd00c74ebfaad6c
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Fri May 12 10:38:12 2023 +0300

    filtering: rewrite http tests

commit 0d8bbcd0194c0db89a6d4b45927669423c9bbb59
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Thu May 11 12:06:30 2023 +0300

    filtering: rewrite http tests

commit 29080384dd8fa80d5286d2fac1a4429d712bbafa
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 17:24:00 2023 +0300

    filtering: imp code

commit 96c6b1c98debfae565c5e6254746959a4307744e
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 16:56:32 2023 +0300

    filtering: imp code

commit b5d0c50ea11f9d829ba9d2b188fcc471a965e012
Merge: 5fa9e1c37 c77b2a0ce
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 16:37:19 2023 +0300

    Merge remote-tracking branch 'origin/master' into 1577-rewrite-edit

commit 5fa9e1c3714e107f893c03efa72227f3ed88691c
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 16:35:19 2023 +0300

    filtering: imp code

commit dd9dce8fbf0ce4bd200f2fc2fbf580e025920cd5
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 13:06:43 2023 +0300

    docs: rewrite http update

commit 0c67b040e80787b084c4669bb20db8d6d145fc1b
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed May 10 13:04:31 2023 +0300

    filtering: rewrite http update
This commit is contained in:
Dimitry Kolyshev 2023-05-12 13:04:19 +03:00
parent c77b2a0ce5
commit 0393e41096
6 changed files with 341 additions and 0 deletions
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6
CHANGELOG.md
View file

@ -23,6 +23,11 @@ See also the [v0.107.30 GitHub milestone][ms-v0.107.30].
NOTE: Add new changes BELOW THIS COMMENT.
-->
### Added
- The ability to edit rewrite rules via `PUT /control/rewrite/update` HTTP API
([#1577]).
### Fixed
- Unquoted IPv6 bind hosts with trailing colons erroneously considered
@ -35,6 +40,7 @@ NOTE: Add new changes BELOW THIS COMMENT.
- Provided bootstrap servers are now used to resolve the hostnames of plain
UDP/TCP upstream servers.
[#1577]: https://github.com/AdguardTeam/AdGuardHome/issues/1577
[#5716]: https://github.com/AdguardTeam/AdGuardHome/issues/5716
<!--

1
internal/filtering/http.go
View file

@ -555,6 +555,7 @@ func (d *DNSFilter) RegisterFilteringHandlers() {
registerHTTP(http.MethodGet, "/control/rewrite/list", d.handleRewriteList)
registerHTTP(http.MethodPost, "/control/rewrite/add", d.handleRewriteAdd)
registerHTTP(http.MethodPut, "/control/rewrite/update", d.handleRewriteUpdate)
registerHTTP(http.MethodPost, "/control/rewrite/delete", d.handleRewriteDelete)
registerHTTP(http.MethodGet, "/control/blocked_services/services", d.handleBlockedServicesIDs)

60
internal/filtering/rewritehttp.go
View file

@ -6,6 +6,7 @@ import (
"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
"github.com/AdguardTeam/golibs/log"
"golang.org/x/exp/slices"
)
// TODO(d.kolyshev): Use [rewrite.Item] instead.
@ -91,3 +92,62 @@ func (d *DNSFilter) handleRewriteDelete(w http.ResponseWriter, r *http.Request)
d.Config.ConfigModified()
}
// rewriteUpdateJSON is a struct for JSON object with rewrite rule update info.
type rewriteUpdateJSON struct {
Target rewriteEntryJSON `json:"target"`
Update rewriteEntryJSON `json:"update"`
}
// handleRewriteUpdate is the handler for the PUT /control/rewrite/update HTTP
// API.
func (d *DNSFilter) handleRewriteUpdate(w http.ResponseWriter, r *http.Request) {
updateJSON := rewriteUpdateJSON{}
err := json.NewDecoder(r.Body).Decode(&updateJSON)
if err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "json.Decode: %s", err)
return
}
rwDel := &LegacyRewrite{
Domain: updateJSON.Target.Domain,
Answer: updateJSON.Target.Answer,
}
rwAdd := &LegacyRewrite{
Domain: updateJSON.Update.Domain,
Answer: updateJSON.Update.Answer,
}
err = rwAdd.normalize()
if err != nil {
// Shouldn't happen currently, since normalize only returns a non-nil
// error when a rewrite is nil, but be change-proof.
aghhttp.Error(r, w, http.StatusBadRequest, "normalizing: %s", err)
return
}
index := -1
defer func() {
if index >= 0 {
d.Config.ConfigModified()
}
}()
d.confLock.Lock()
defer d.confLock.Unlock()
index = slices.IndexFunc(d.Config.Rewrites, rwDel.equal)
if index == -1 {
aghhttp.Error(r, w, http.StatusBadRequest, "target rule not found")
return
}
d.Config.Rewrites = slices.Replace(d.Config.Rewrites, index, index+1, rwAdd)
log.Debug("rewrite: removed element: %s -> %s", rwDel.Domain, rwDel.Answer)
log.Debug("rewrite: added element: %s -> %s", rwAdd.Domain, rwAdd.Answer)
}

237
internal/filtering/rewritehttp_test.go Normal file
View file

@ -0,0 +1,237 @@
package filtering_test
import (
"bytes"
"encoding/json"
"io"
"net/http"
"net/http/httptest"
"testing"
"time"
"github.com/AdguardTeam/AdGuardHome/internal/filtering"
"github.com/AdguardTeam/golibs/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// TODO(d.kolyshev): Use [rewrite.Item] instead.
type rewriteJSON struct {
Domain string `json:"domain"`
Answer string `json:"answer"`
}
type rewriteUpdateJSON struct {
Target rewriteJSON `json:"target"`
Update rewriteJSON `json:"update"`
}
const (
// testTimeout is the common timeout for tests.
testTimeout = 100 * time.Millisecond
listURL = "/control/rewrite/list"
addURL = "/control/rewrite/add"
deleteURL = "/control/rewrite/delete"
updateURL = "/control/rewrite/update"
decodeErrorMsg = "json.Decode: json: cannot unmarshal string into Go value of type" +
" filtering.rewriteEntryJSON\n"
)
func TestDNSFilter_handleRewriteHTTP(t *testing.T) {
confModCh := make(chan struct{})
reqCh := make(chan struct{})
testRewrites := []*rewriteJSON{
{Domain: "example.local", Answer: "example.rewrite"},
{Domain: "one.local", Answer: "one.rewrite"},
}
testRewritesJSON, mErr := json.Marshal(testRewrites)
require.NoError(t, mErr)
testCases := []struct {
reqData any
name string
url string
method string
wantList []*rewriteJSON
wantBody string
wantConfMod bool
wantStatus int
}{{
name: "list",
url: listURL,
method: http.MethodGet,
reqData: nil,
wantConfMod: false,
wantStatus: http.StatusOK,
wantBody: string(testRewritesJSON) + "\n",
wantList: testRewrites,
}, {
name: "add",
url: addURL,
method: http.MethodPost,
reqData: rewriteJSON{Domain: "add.local", Answer: "add.rewrite"},
wantConfMod: true,
wantStatus: http.StatusOK,
wantBody: "",
wantList: append(
testRewrites,
&rewriteJSON{Domain: "add.local", Answer: "add.rewrite"},
),
}, {
name: "add_error",
url: addURL,
method: http.MethodPost,
reqData: "invalid_json",
wantConfMod: false,
wantStatus: http.StatusBadRequest,
wantBody: decodeErrorMsg,
wantList: testRewrites,
}, {
name: "delete",
url: deleteURL,
method: http.MethodPost,
reqData: rewriteJSON{Domain: "one.local", Answer: "one.rewrite"},
wantConfMod: true,
wantStatus: http.StatusOK,
wantBody: "",
wantList: []*rewriteJSON{{Domain: "example.local", Answer: "example.rewrite"}},
}, {
name: "delete_error",
url: deleteURL,
method: http.MethodPost,
reqData: "invalid_json",
wantConfMod: false,
wantStatus: http.StatusBadRequest,
wantBody: decodeErrorMsg,
wantList: testRewrites,
}, {
name: "update",
url: updateURL,
method: http.MethodPut,
reqData: rewriteUpdateJSON{
Target: rewriteJSON{Domain: "one.local", Answer: "one.rewrite"},
Update: rewriteJSON{Domain: "upd.local", Answer: "upd.rewrite"},
},
wantConfMod: true,
wantStatus: http.StatusOK,
wantBody: "",
wantList: []*rewriteJSON{
{Domain: "example.local", Answer: "example.rewrite"},
{Domain: "upd.local", Answer: "upd.rewrite"},
},
}, {
name: "update_error",
url: updateURL,
method: http.MethodPut,
reqData: "invalid_json",
wantConfMod: false,
wantStatus: http.StatusBadRequest,
wantBody: "json.Decode: json: cannot unmarshal string into Go value of type" +
" filtering.rewriteUpdateJSON\n",
wantList: testRewrites,
}, {
name: "update_error_target",
url: updateURL,
method: http.MethodPut,
reqData: rewriteUpdateJSON{
Target: rewriteJSON{Domain: "inv.local", Answer: "inv.rewrite"},
Update: rewriteJSON{Domain: "upd.local", Answer: "upd.rewrite"},
},
wantConfMod: false,
wantStatus: http.StatusBadRequest,
wantBody: "target rule not found\n",
wantList: testRewrites,
}}
for _, tc := range testCases {
onConfModified := func() {
if !tc.wantConfMod {
panic("config modified has been fired")
}
testutil.RequireSend(testutil.PanicT{}, confModCh, struct{}{}, testTimeout)
}
t.Run(tc.name, func(t *testing.T) {
handlers := make(map[string]http.Handler)
d, err := filtering.New(&filtering.Config{
ConfigModified: onConfModified,
HTTPRegister: func(_, url string, handler http.HandlerFunc) {
handlers[url] = handler
},
Rewrites: rewriteEntriesToLegacyRewrites(testRewrites),
}, nil)
require.NoError(t, err)
t.Cleanup(d.Close)
d.RegisterFilteringHandlers()
require.NotEmpty(t, handlers)
require.Contains(t, handlers, listURL)
require.Contains(t, handlers, tc.url)
var body io.Reader
if tc.reqData != nil {
data, rErr := json.Marshal(tc.reqData)
require.NoError(t, rErr)
body = bytes.NewReader(data)
}
r := httptest.NewRequest(tc.method, tc.url, body)
w := httptest.NewRecorder()
go func() {
handlers[tc.url].ServeHTTP(w, r)
testutil.RequireSend(testutil.PanicT{}, reqCh, struct{}{}, testTimeout)
}()
if tc.wantConfMod {
testutil.RequireReceive(t, confModCh, testTimeout)
}
testutil.RequireReceive(t, reqCh, testTimeout)
assert.Equal(t, tc.wantStatus, w.Code)
respBody, err := io.ReadAll(w.Body)
require.NoError(t, err)
assert.Equal(t, []byte(tc.wantBody), respBody)
assertRewritesList(t, handlers[listURL], tc.wantList)
})
}
}
// assertRewritesList checks if rewrites list equals the list received from the
// handler by listURL.
func assertRewritesList(t *testing.T, handler http.Handler, wantList []*rewriteJSON) {
t.Helper()
r := httptest.NewRequest(http.MethodGet, listURL, nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, r)
require.Equal(t, http.StatusOK, w.Code)
var actual []*rewriteJSON
err := json.NewDecoder(w.Body).Decode(&actual)
require.NoError(t, err)
assert.Equal(t, wantList, actual)
}
// rewriteEntriesToLegacyRewrites gets legacy rewrites from json entries.
func rewriteEntriesToLegacyRewrites(entries []*rewriteJSON) (rw []*filtering.LegacyRewrite) {
for _, entry := range entries {
rw = append(rw, &filtering.LegacyRewrite{
Domain: entry.Domain,
Answer: entry.Answer,
})
}
return rw
}

12
openapi/CHANGELOG.md
View file

@ -12,6 +12,18 @@
`GET /control/dhcp/interfaces` HTTP APIs is now correctly set to
`application/json` as opposed to `text/plain`.
### New HTTP API 'PUT /control/rewrite/update'
* The new `PUT /control/rewrite/update` HTTP API allows rewrite rule updates.
It accepts a JSON object with the following format:
```json
{
"target": {"domain":"example.com","answer":"answer-to-update"},
"update": {"domain":"example.com","answer":"new-answer"}
}
```
## v0.107.29: API changes

25
openapi/openapi.yaml
View file

@ -1061,6 +1061,17 @@
'responses':
'200':
'description': 'OK.'
'/rewrite/update':
'put':
'tags':
- 'rewrite'
'operationId': 'rewriteUpdate'
'summary': 'Update a Rewrite rule'
'requestBody':
'$ref': '#/components/requestBodies/RewriteUpdate'
'responses':
'200':
'description': 'OK.'
'/i18n/change_language':
'post':
'deprecated': true
@ -1311,6 +1322,12 @@
'schema':
'$ref': '#/components/schemas/RewriteEntry'
'required': true
'RewriteUpdate':
'content':
'application/json':
'schema':
'$ref': '#/components/schemas/RewriteUpdate'
'required': true
'schemas':
'ServerStatus':
'type': 'object'
@ -2702,6 +2719,14 @@
'items':
'$ref': '#/components/schemas/RewriteEntry'
'description': 'Rewrite rules array'
'RewriteUpdate':
'type': 'object'
'description': 'Rewrite rule update object'
'properties':
'target':
'$ref': '#/components/schemas/RewriteEntry'
'update':
'$ref': '#/components/schemas/RewriteEntry'
'RewriteEntry':
'type': 'object'
'description': 'Rewrite rule'