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Merge pull request #1 from tenjaa/github-app
Add GitHub app authentication
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| package resource | ||
|
|
||
| import ( | ||
| "crypto/x509" | ||
| "encoding/json" | ||
| "encoding/pem" | ||
| "fmt" | ||
| "gopkg.in/square/go-jose.v2" | ||
| "gopkg.in/square/go-jose.v2/jwt" | ||
| "net/http" | ||
| "os" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| type InstallationResponse struct { | ||
| Id int | ||
| } | ||
|
|
||
| type TokenResponse struct { | ||
| Token string | ||
| } | ||
|
|
||
| func GenerateAccessToken(s *Source, now time.Time) (string, error) { | ||
| if s.AccessToken != "" { | ||
| return s.AccessToken, nil | ||
| } | ||
|
|
||
| decode, _ := pem.Decode([]byte(s.PrivateKey)) | ||
| key, _ := x509.ParsePKCS1PrivateKey(decode.Bytes) | ||
| sig, err := jose.NewSigner(jose.SigningKey{Algorithm: jose.RS256, Key: key}, (&jose.SignerOptions{}).WithType("JWT")) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| cl := jwt.Claims{ | ||
| Issuer: s.AppId, | ||
| IssuedAt: jwt.NewNumericDate(now), | ||
| Expiry: jwt.NewNumericDate(now.Add(9 * time.Minute)), | ||
| } | ||
| signedJwt, err := jwt.Signed(sig).Claims(cl).CompactSerialize() | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| var endpoint string | ||
| if s.V3Endpoint != "" { | ||
| endpoint = strings.TrimRight(s.V3Endpoint, "/") | ||
| } else { | ||
| endpoint = "https://api.github.com" | ||
| } | ||
|
|
||
| installationResponse := callApi("GET", endpoint+"/repos/"+s.Repository+"/installation", signedJwt) | ||
| var ir InstallationResponse | ||
| err = json.NewDecoder(installationResponse.Body).Decode(&ir) | ||
| if err != nil { | ||
| _, _ = fmt.Fprintln(os.Stderr, fmt.Sprintf("Error decoding installation response with status %d", installationResponse.StatusCode)) | ||
| _, _ = fmt.Fprintln(os.Stderr, installationResponse.Body) | ||
| panic(err) | ||
| } | ||
|
|
||
| tokenResponse := callApi("POST", endpoint+"/app/installations/"+strconv.Itoa(ir.Id)+"/access_tokens", signedJwt) | ||
|
|
||
| var tr TokenResponse | ||
| err = json.NewDecoder(tokenResponse.Body).Decode(&tr) | ||
| if err != nil { | ||
| _, _ = fmt.Fprintln(os.Stderr, fmt.Sprintf("Error decoding token response with status %d", tokenResponse.StatusCode)) | ||
| _, _ = fmt.Fprintln(os.Stderr, tokenResponse.Body) | ||
| panic(err) | ||
| } | ||
|
|
||
| return tr.Token, nil | ||
| } | ||
|
|
||
| func callApi(method string, endpoint string, signedJwt string) *http.Response { | ||
| tokenRequest, err := http.NewRequest(method, endpoint, nil) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| tokenRequest.Header.Add("Authorization", "Bearer "+signedJwt) | ||
| tokenRequest.Header.Add("Accept", "application/vnd.github.machine-man-preview+json") | ||
| client := &http.Client{} | ||
| response, err := client.Do(tokenRequest) | ||
|
|
||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return response | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| package resource_test | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "github.com/stretchr/testify/assert" | ||
| resource "github.com/telia-oss/github-pr-resource" | ||
| "net/http" | ||
| "net/http/httptest" | ||
| "testing" | ||
| "time" | ||
| ) | ||
|
|
||
| func TestGenerateAccessToken(t *testing.T) { | ||
|
|
||
| validInstallationResponse := ` | ||
| { | ||
| "id": 9912873, | ||
| "account": { | ||
| "login": "github", | ||
| "id": 1, | ||
| "node_id": "MDEyOk9yZ2FuaXphdGlvbjE=", | ||
| "avatar_url": "https://github.com/images/error/hubot_happy.gif", | ||
| "gravatar_id": "", | ||
| "url": "https://api.github.com/orgs/github", | ||
| "html_url": "https://github.com/github", | ||
| "followers_url": "https://api.github.com/users/github/followers", | ||
| "following_url": "https://api.github.com/users/github/following{/other_user}", | ||
| "gists_url": "https://api.github.com/users/github/gists{/gist_id}", | ||
| "starred_url": "https://api.github.com/users/github/starred{/owner}{/repo}", | ||
| "subscriptions_url": "https://api.github.com/users/github/subscriptions", | ||
| "organizations_url": "https://api.github.com/users/github/orgs", | ||
| "repos_url": "https://api.github.com/orgs/github/repos", | ||
| "events_url": "https://api.github.com/orgs/github/events", | ||
| "received_events_url": "https://api.github.com/users/github/received_events", | ||
| "type": "Organization", | ||
| "site_admin": false | ||
| }, | ||
| "repository_selection": "all", | ||
| "access_tokens_url": "https://api.github.com/installations/1/access_tokens", | ||
| "repositories_url": "https://api.github.com/installation/repositories", | ||
| "html_url": "https://github.com/organizations/github/settings/installations/1", | ||
| "app_id": 1, | ||
| "target_id": 1, | ||
| "target_type": "Organization", | ||
| "permissions": { | ||
| "checks": "write", | ||
| "metadata": "read", | ||
| "contents": "read" | ||
| }, | ||
| "events": [ | ||
| "push", | ||
| "pull_request" | ||
| ], | ||
| "created_at": "2018-02-09T20:51:14Z", | ||
| "updated_at": "2018-02-09T20:51:14Z", | ||
| "single_file_name": null | ||
| } | ||
| ` | ||
|
|
||
| validTokenResponse := ` | ||
| { | ||
| "token": "v1.b71be873ad96e64a84025ae7bee7694a99cb4ba9", | ||
| "expires_at": "2020-06-21T00:03:29Z", | ||
| "permissions": { | ||
| "checks": "write", | ||
| "contents": "read", | ||
| "metadata": "read", | ||
| "pull_requests": "write" | ||
| }, | ||
| "repository_selection": "selected" | ||
| } | ||
| ` | ||
|
|
||
| ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| if r.RequestURI == "/repos/itsdalmo/test-repository/installation" { | ||
| assert.Equal(t, "GET", r.Method) | ||
| assert.Equal(t, "application/vnd.github.machine-man-preview+json", r.Header.Get("Accept")) | ||
| assert.Equal(t, "Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1OTI2OTE5ODIsImlhdCI6MTU5MjY5MTQ0MiwiaXNzIjoiNjk1OTIifQ.H_a6i7TpaGOsaoliH_i7AT5UMwM9LqO21lEFYiZ96_H15cEF6D_kyZrcHyinP2fSC8rX_OQ-DvPsehTNTtfOhgM-nsdgg-gTzdCSlASgc00sGhw_pjBFwHpD6V1NQojc82L8SAR9Bg75g0xVlQ_dAR_Lbtmk252X_AlabRAfdSchK_GVdc3kSEbp28lc87EF7J_lFdRCNuVi1xcLFOXPmMeu4epSBf1ZMtuts28C7iqaI4QJ9keaGFug1wpL-WLDcFbvmB2nJhBYN9tArGM0ZHZ5i4EhFyFjGpBwTyo5P7WY7P3zYtz36gwgntYRtPPivcFQ-wUWuvMpL6vKd-Pp8w", r.Header.Get("Authorization")) | ||
| _, _ = fmt.Fprintln(w, validInstallationResponse) | ||
| } | ||
|
|
||
| if r.RequestURI == "/app/installations/9912873/access_tokens" { | ||
| assert.Equal(t, "POST", r.Method) | ||
| assert.Equal(t, "application/vnd.github.machine-man-preview+json", r.Header.Get("Accept")) | ||
| assert.Equal(t, "Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1OTI2OTE5ODIsImlhdCI6MTU5MjY5MTQ0MiwiaXNzIjoiNjk1OTIifQ.H_a6i7TpaGOsaoliH_i7AT5UMwM9LqO21lEFYiZ96_H15cEF6D_kyZrcHyinP2fSC8rX_OQ-DvPsehTNTtfOhgM-nsdgg-gTzdCSlASgc00sGhw_pjBFwHpD6V1NQojc82L8SAR9Bg75g0xVlQ_dAR_Lbtmk252X_AlabRAfdSchK_GVdc3kSEbp28lc87EF7J_lFdRCNuVi1xcLFOXPmMeu4epSBf1ZMtuts28C7iqaI4QJ9keaGFug1wpL-WLDcFbvmB2nJhBYN9tArGM0ZHZ5i4EhFyFjGpBwTyo5P7WY7P3zYtz36gwgntYRtPPivcFQ-wUWuvMpL6vKd-Pp8w", r.Header.Get("Authorization")) | ||
| _, _ = fmt.Fprintln(w, validTokenResponse) | ||
| } | ||
| })) | ||
| defer ts.Close() | ||
|
|
||
| tests := []struct { | ||
| description string | ||
| source resource.Source | ||
| expectedAccessToken string | ||
| }{ | ||
| { | ||
| description: "return given access token", | ||
| source: resource.Source{ | ||
| Repository: "itsdalmo/test-repository", | ||
| AccessToken: "oauthtoken", | ||
| }, | ||
| expectedAccessToken: "oauthtoken", | ||
| }, | ||
| { | ||
| description: "create access token", | ||
| source: resource.Source{ | ||
| Repository: "itsdalmo/test-repository", | ||
| AppId: "69592", | ||
| PrivateKey: "-----BEGIN RSA PRIVATE KEY-----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\n9Kc7VaZP1iS4EIxEc+qx38HqdeiUBcqTMRam6k3mSwactBKCKDI=\n-----END RSA PRIVATE KEY-----\n", | ||
| V3Endpoint: ts.URL, | ||
| }, | ||
| expectedAccessToken: "v1.b71be873ad96e64a84025ae7bee7694a99cb4ba9", | ||
| }, | ||
| { | ||
| description: "handle trailing slash", | ||
| source: resource.Source{ | ||
| Repository: "itsdalmo/test-repository", | ||
| AppId: "69592", | ||
| PrivateKey: "-----BEGIN RSA PRIVATE KEY-----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\n9Kc7VaZP1iS4EIxEc+qx38HqdeiUBcqTMRam6k3mSwactBKCKDI=\n-----END RSA PRIVATE KEY-----\n", | ||
| V3Endpoint: ts.URL + "/", | ||
| }, | ||
| expectedAccessToken: "v1.b71be873ad96e64a84025ae7bee7694a99cb4ba9", | ||
| }, | ||
| } | ||
| for _, tt := range tests { | ||
| t.Run(tt.description, func(t *testing.T) { | ||
| got, err := resource.GenerateAccessToken(&tt.source, time.Unix(1592691442, 0)) | ||
| assert.Nil(t, err) | ||
| assert.Equal(t, tt.expectedAccessToken, got) | ||
| }) | ||
| } | ||
| } |
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