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Implement http signatures support for the API (go-gitea#17565)
Fixes go-gitea#12338 This allows use to talk to the API with our ssh certificate (and/or ssh-agent) without needing to fetch an API key or tokens. It will just automatically work when users have added their ssh principal in gitea. This needs client code in tea Update: also support normal pubkeys ref: https://tools.ietf.org/html/draft-cavage-http-signatures Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com> Co-authored-by: zeripath <art27@cantab.net> Signed-off-by: Andrew Thornton <art27@cantab.net>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| // Copyright 2022 The Gitea Authors. All rights reserved. | ||
| // Use of this source code is governed by a MIT-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| package integrations | ||
|
|
||
| import ( | ||
| "encoding/base64" | ||
| "fmt" | ||
| "net/http" | ||
| "net/url" | ||
| "testing" | ||
|
|
||
| api "code.gitea.io/gitea/modules/structs" | ||
|
|
||
| "github.com/go-fed/httpsig" | ||
| "golang.org/x/crypto/ssh" | ||
| ) | ||
|
|
||
| const ( | ||
| httpsigPrivateKey = `-----BEGIN OPENSSH PRIVATE KEY----- | ||
| b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAABFwAAAAdzc2gtcn | ||
| NhAAAAAwEAAQAAAQEAqjmQeb5Eb1xV7qbNf9ErQ0XRvKZWzUsLFhJzZz+Ab7q8WtPs91vQ | ||
| fBiypw4i8OTG6WzDcgZaV8Ndxn7iHnIstdA1k89MVG4stydymmwmk9+mrCMNsu5OmdIy9F | ||
| AZ61RDcKuf5VG2WKkmeK0VO+OMJIYfE1C6czNeJ6UAmcIOmhGxvjMI83XUO9n0ftwTwayp | ||
| +XU5prvKx/fTvlPjbraPNU4OzwPjVLqXBzpoXYhBquPaZYFRVyvfFZLObYsmy+BrsxcloM | ||
| l+9w4P0ATJ9njB7dRDL+RrN4uhhYSihqOK4w4vaiOj1+aA0eC0zXunEfLXfGIVQ/FhWcCy | ||
| 5f72mMiKnQAAA9AxSmzFMUpsxQAAAAdzc2gtcnNhAAABAQCqOZB5vkRvXFXups1/0StDRd | ||
| G8plbNSwsWEnNnP4Bvurxa0+z3W9B8GLKnDiLw5MbpbMNyBlpXw13GfuIeciy10DWTz0xU | ||
| biy3J3KabCaT36asIw2y7k6Z0jL0UBnrVENwq5/lUbZYqSZ4rRU744wkhh8TULpzM14npQ | ||
| CZwg6aEbG+MwjzddQ72fR+3BPBrKn5dTmmu8rH99O+U+Nuto81Tg7PA+NUupcHOmhdiEGq | ||
| 49plgVFXK98Vks5tiybL4GuzFyWgyX73Dg/QBMn2eMHt1EMv5Gs3i6GFhKKGo4rjDi9qI6 | ||
| PX5oDR4LTNe6cR8td8YhVD8WFZwLLl/vaYyIqdAAAAAwEAAQAAAQBz+nyBNi2SYir6SxPA | ||
| flcnoq5gBkUl4ndPNosCUbXEakpi5/mQHzJRGtK+F1efIYCVEdGoIsPy/90onNKbQ9dKmO | ||
| 2oI5kx/U7iCzJ+HCm8nqkEp21x+AP9scWdx+Wg/OxmG8j5iU7f4X+gwOyyvTqCuA78Lgia | ||
| 7Oi9wiJCoIEqXr6dRYGJzfASwKA2dj995HzATexleLSD5fQCmZTF+Vh5OQ5WmE+c53JdZS | ||
| T3Plie/P/smgSWBtf1fWr6JL2+EBsqQsIK1Jo7r/7rxsz+ILoVfnneNQY4QSa9W+t6ZAI+ | ||
| caSA0Guv7vC92ewjlMVlwKa3XaEjMJb5sFlg1r6TYMwBAAAAgQDQwXvgSXNaSHIeH53/Ab | ||
| t4BlNibtxK8vY8CZFloAKXkjrivKSlDAmQCM0twXOweX2ScPjE+XlSMV4AUsv/J6XHGHci | ||
| W3+PGIBfc/fQRBpiyhzkoXYDVrlkSKHffCnAqTUQlYkhr0s7NkZpEeqPE0doAUs4dK3Iqb | ||
| zdtz8e5BPXZwAAAIEA4U/JskIu5Oge8Is2OLOhlol0EJGw5JGodpFyhbMC+QYK9nYqy7wI | ||
| a6mZ2EfOjjwIZD/+wYyulw6cRve4zXwgzUEXLIKp8/H3sYvJK2UMeP7y68sQFqGxbm6Rnh | ||
| tyBBSaJQnOXVOFf9gqZGCyO/J0Illg3AXTuC8KS/cxwasC38EAAACBAMFo/6XQoR6E3ynj | ||
| VBaz2SilWqQBixUyvcNz8LY73IIDCecoccRMFSEKhWtvlJijxvFbF9M8g9oKAVPuub4V5r | ||
| CGmwVPEd5yt4C2iyV0PhLp1PA2/i42FpCSnHaz/EXSz6ncTZcOMMuDqUbgUUpQg4VSUDl9 | ||
| fhTNAzWwZoQ91aHdAAAAFHUwMDIyMTQ2QGljdHMtcC1ueC03AQIDBAUG | ||
| -----END OPENSSH PRIVATE KEY-----` | ||
| httpsigCertificate = `ssh-rsa-cert-v01@openssh.com AAAAHHNzaC1yc2EtY2VydC12MDFAb3BlbnNzaC5jb20AAAAgiR7SU8gmZLhopx4Y03nOXVuAb+4fyMcJYjMGcE1Z2oEAAAADAQABAAABAQCqOZB5vkRvXFXups1/0StDRdG8plbNSwsWEnNnP4Bvurxa0+z3W9B8GLKnDiLw5MbpbMNyBlpXw13GfuIeciy10DWTz0xUbiy3J3KabCaT36asIw2y7k6Z0jL0UBnrVENwq5/lUbZYqSZ4rRU744wkhh8TULpzM14npQCZwg6aEbG+MwjzddQ72fR+3BPBrKn5dTmmu8rH99O+U+Nuto81Tg7PA+NUupcHOmhdiEGq49plgVFXK98Vks5tiybL4GuzFyWgyX73Dg/QBMn2eMHt1EMv5Gs3i6GFhKKGo4rjDi9qI6PX5oDR4LTNe6cR8td8YhVD8WFZwLLl/vaYyIqdAAAAAAAAAAEAAAABAAAABXVzZXIxAAAACQAAAAV1c2VyMQAAAABimoIOAAAAAMCWkRMAAAAAAAAAggAAABVwZXJtaXQtWDExLWZvcndhcmRpbmcAAAAAAAAAF3Blcm1pdC1hZ2VudC1mb3J3YXJkaW5nAAAAAAAAABZwZXJtaXQtcG9ydC1mb3J3YXJkaW5nAAAAAAAAAApwZXJtaXQtcHR5AAAAAAAAAA5wZXJtaXQtdXNlci1yYwAAAAAAAAAAAAABlwAAAAdzc2gtcnNhAAAAAwEAAQAAAYEAm+AwtXTBZyeqV1qOxjMU3Ibc5iR2M3zerGfRQDxUeIozC3xpIvqJbzjDuRapdf8hpxn2xC0GtUusuLIUr4/+Svs1BUnJhF2H9xnK/O0aopS5MpNekUvnBzQdbvO8Ux2xE2mt58giXhkEaXeCEODSqG++OZsA2e40AR/AGRJ4OdDofMvH4vLJAQQc2mKdYpYL8xu+NC+7nsenx1etpsqtEl3gmvqCVI6t9uhVPMvlbGt9h/AN3u7ToF2T3bdk1TZbcdkvR9ljvETIuy32ksAETX8tc7vm30edK+nn/GMeWCgjM+MFm9Uh1NRkvNNJozo5SJy0DkWETTJUsEdfry5VQ3IjqhWqQ0m4/mDlTmsEdEdWqpUiqWZLd9w7jgT8fanuglZyIu2fj8fyqjPjiws5S2P0Uvi28UKQ1nH01UYj/kuakU3BNzN1IqDf3tARP9fjKV/dCBqb1ZAOtyC2GyhGuGzNwEi+woUwq+sTeV0/hqVSb3hSitXHzcfRMRyOK82BAAABlAAAAAxyc2Etc2hhMi01MTIAAAGAMBfgZFvz4BdxriGKYd6eRhMo6hf+I8S9uzNRsflJXHuA+HR9ExIm/Q9JjKmfThQzNyGGBOBILaDU205SAJuG+kk3SieSQDd75ZQd8YmNlCc+516AriOsTiyVCupnf3I2euTjMZqEZbJcBbkBljppTOWQVN7xxE8QakDfGhg0+RjJE9wYOTmkKpDBfII5Nw8V5DoOD7kNEpXYqHdy/8lVxpqUYNIP1J0dNP4f6qBcZcM1PDA12q8zwIGqSNNjf2UXY/Nr8nv9CnK4fB8NDOPKTBa4cm48BGbvM/X0l6dYKswuZ9Np8lw+y6+GxTgznGCrkzMmuEV4FzSq4xHp41H2L2MTwUkwYaeyG1VP6aWkvn6zPkSxaaJDfQX7CAFe17IhIGXR0UPLjKjh35nDLzMWb/W6/W1lK9YkZNHXSf7Z9m9MUAZN7yQgOggGsuYEW4imZxvZizMd+fdDu9mbhr0FDis89I7MSJDnyYRE9FXS7p3QpppBwGcss/9yV3JV3Bjc` | ||
| ) | ||
|
|
||
| func TestHTTPSigPubKey(t *testing.T) { | ||
| // Add our public key to user1 | ||
| defer prepareTestEnv(t)() | ||
| session := loginUser(t, "user1") | ||
| token := url.QueryEscape(getTokenForLoggedInUser(t, session)) | ||
| keysURL := fmt.Sprintf("/api/v1/user/keys?token=%s", token) | ||
| keyType := "ssh-rsa" | ||
| keyContent := "AAAAB3NzaC1yc2EAAAADAQABAAABAQCqOZB5vkRvXFXups1/0StDRdG8plbNSwsWEnNnP4Bvurxa0+z3W9B8GLKnDiLw5MbpbMNyBlpXw13GfuIeciy10DWTz0xUbiy3J3KabCaT36asIw2y7k6Z0jL0UBnrVENwq5/lUbZYqSZ4rRU744wkhh8TULpzM14npQCZwg6aEbG+MwjzddQ72fR+3BPBrKn5dTmmu8rH99O+U+Nuto81Tg7PA+NUupcHOmhdiEGq49plgVFXK98Vks5tiybL4GuzFyWgyX73Dg/QBMn2eMHt1EMv5Gs3i6GFhKKGo4rjDi9qI6PX5oDR4LTNe6cR8td8YhVD8WFZwLLl/vaYyIqd" | ||
| rawKeyBody := api.CreateKeyOption{ | ||
| Title: "test-key", | ||
| Key: keyType + " " + keyContent, | ||
| } | ||
| req := NewRequestWithJSON(t, "POST", keysURL, rawKeyBody) | ||
| session.MakeRequest(t, req, http.StatusCreated) | ||
|
|
||
| // parse our private key and create the httpsig request | ||
| sshSigner, _ := ssh.ParsePrivateKey([]byte(httpsigPrivateKey)) | ||
| keyID := ssh.FingerprintSHA256(sshSigner.PublicKey()) | ||
|
|
||
| // create the request | ||
| req = NewRequest(t, "GET", "/api/v1/admin/users") | ||
|
|
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| signer, _, err := httpsig.NewSSHSigner(sshSigner, httpsig.DigestSha512, []string{httpsig.RequestTarget, "(created)", "(expires)"}, httpsig.Signature, 10) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| // sign the request | ||
| err = signer.SignRequest(keyID, req, nil) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| // make the request | ||
| MakeRequest(t, req, http.StatusOK) | ||
| } | ||
|
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| func TestHTTPSigCert(t *testing.T) { | ||
| // Add our public key to user1 | ||
| defer prepareTestEnv(t)() | ||
| session := loginUser(t, "user1") | ||
|
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| csrf := GetCSRF(t, session, "/user/settings/keys") | ||
| req := NewRequestWithValues(t, "POST", "/user/settings/keys", map[string]string{ | ||
| "_csrf": csrf, | ||
| "content": "user1", | ||
| "title": "principal", | ||
| "type": "principal", | ||
| }) | ||
|
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| session.MakeRequest(t, req, http.StatusSeeOther) | ||
| pkcert, _, _, _, err := ssh.ParseAuthorizedKey([]byte(httpsigCertificate)) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
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| // parse our private key and create the httpsig request | ||
| sshSigner, _ := ssh.ParsePrivateKey([]byte(httpsigPrivateKey)) | ||
| keyID := "gitea" | ||
|
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| // create our certificate signer using the ssh signer and our certificate | ||
| certSigner, err := ssh.NewCertSigner(pkcert.(*ssh.Certificate), sshSigner) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| // create the request | ||
| req = NewRequest(t, "GET", "/api/v1/admin/users") | ||
|
|
||
| // add our cert to the request | ||
| certString := base64.RawStdEncoding.EncodeToString(pkcert.(*ssh.Certificate).Marshal()) | ||
| req.Header.Add("x-ssh-certificate", certString) | ||
|
|
||
| signer, _, err := httpsig.NewSSHSigner(certSigner, httpsig.DigestSha512, []string{httpsig.RequestTarget, "(created)", "(expires)", "x-ssh-certificate"}, httpsig.Signature, 10) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| // sign the request | ||
| err = signer.SignRequest(keyID, req, nil) | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
|
|
||
| // make the request | ||
| MakeRequest(t, req, http.StatusOK) | ||
| } |
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