Disable DSA ssh keys by default (#13056)
* Disable DSA ssh keys by default OpenSSH has disabled DSA keys since version 7.0 As the docker runs openssh > v7.0 we should just disable DSA keys by default. Refers to #11417 Signed-off-by: Andrew Thornton <art27@cantab.net> * Just disable DSA keys by default Signed-off-by: Andrew Thornton <art27@cantab.net> * Appears we need to set the minimum key sizes too Signed-off-by: Andrew Thornton <art27@cantab.net> * Appears we need to set the minimum key sizes too Signed-off-by: Andrew Thornton <art27@cantab.net> * Remove DSA type * Fix Tests Co-authored-by: techknowlogick <techknowlogick@gitea.io> Co-authored-by: Lauris BH <lauris@nix.lv>
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8 changed files with 25 additions and 22 deletions
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@ -375,7 +375,7 @@ STATIC_CACHE_TIME = 6h
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ED25519 = 256
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ECDSA = 256
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RSA = 2048
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DSA = 1024
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DSA = -1 ; set to 1024 to switch on
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[database]
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; Database to use. Either "mysql", "postgres", "mssql" or "sqlite3".
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@ -9,8 +9,8 @@ LogLevel INFO
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HostKey /data/ssh/ssh_host_ed25519_key
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HostKey /data/ssh/ssh_host_rsa_key
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HostKey /data/ssh/ssh_host_dsa_key
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HostKey /data/ssh/ssh_host_ecdsa_key
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HostKey /data/ssh/ssh_host_dsa_key
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AuthorizedKeysFile .ssh/authorized_keys
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@ -258,7 +258,7 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
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- `SSH_KEYGEN_PATH`: **ssh-keygen**: Path to ssh-keygen, default is 'ssh-keygen' which means the shell is responsible for finding out which one to call.
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- `SSH_BACKUP_AUTHORIZED_KEYS`: **true**: Enable SSH Authorized Key Backup when rewriting all keys, default is true.
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- `SSH_EXPOSE_ANONYMOUS`: **false**: Enable exposure of SSH clone URL to anonymous visitors, default is false.
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- `MINIMUM_KEY_SIZE_CHECK`: **false**: Indicate whether to check minimum key size with corresponding type.
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- `MINIMUM_KEY_SIZE_CHECK`: **true**: Indicate whether to check minimum key size with corresponding type.
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- `OFFLINE_MODE`: **false**: Disables use of CDN for static files and Gravatar for profile pictures.
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- `DISABLE_ROUTER_LOG`: **false**: Mute printing of the router log.
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@ -479,7 +479,7 @@ Define allowed algorithms and their minimum key length (use -1 to disable a type
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- `ED25519`: **256**
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- `ECDSA`: **256**
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- `RSA`: **2048**
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- `DSA`: **1024**
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- `DSA`: **-1**: DSA is now disabled by default. Set to **1024** to re-enable but ensure you may need to reconfigure your SSHD provider
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## Webhook (`webhook`)
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@ -24,7 +24,7 @@ func TestAPIAdminCreateAndDeleteSSHKey(t *testing.T) {
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token := getTokenForLoggedInUser(t, session)
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urlStr := fmt.Sprintf("/api/v1/admin/users/%s/keys?token=%s", keyOwner.Name, token)
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req := NewRequestWithValues(t, "POST", urlStr, map[string]string{
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"key": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDAu7tvIvX6ZHrRXuZNfkR3XLHSsuCK9Zn3X58lxBcQzuo5xZgB6vRwwm/QtJuF+zZPtY5hsQILBLmF+BZ5WpKZp1jBeSjH2G7lxet9kbcH+kIVj0tPFEoyKI9wvWqIwC4prx/WVk2wLTJjzBAhyNxfEq7C9CeiX9pQEbEqJfkKCQ== nocomment\n",
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"key": "ssh-rsa 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 nocomment\n",
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"title": "test-key",
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})
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resp := session.MakeRequest(t, req, http.StatusCreated)
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@ -64,7 +64,7 @@ func TestAPIAdminDeleteUnauthorizedKey(t *testing.T) {
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token := getTokenForLoggedInUser(t, session)
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urlStr := fmt.Sprintf("/api/v1/admin/users/%s/keys?token=%s", adminUsername, token)
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req := NewRequestWithValues(t, "POST", urlStr, map[string]string{
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"key": "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDAu7tvIvX6ZHrRXuZNfkR3XLHSsuCK9Zn3X58lxBcQzuo5xZgB6vRwwm/QtJuF+zZPtY5hsQILBLmF+BZ5WpKZp1jBeSjH2G7lxet9kbcH+kIVj0tPFEoyKI9wvWqIwC4prx/WVk2wLTJjzBAhyNxfEq7C9CeiX9pQEbEqJfkKCQ== nocomment\n",
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"key": "ssh-rsa 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 nocomment\n",
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"title": "test-key",
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})
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resp := session.MakeRequest(t, req, http.StatusCreated)
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@ -53,7 +53,7 @@ func TestCreateReadOnlyDeployKey(t *testing.T) {
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keysURL := fmt.Sprintf("/api/v1/repos/%s/%s/keys?token=%s", repoOwner.Name, repo.Name, token)
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rawKeyBody := api.CreateKeyOption{
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Title: "read-only",
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Key: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDAu7tvIvX6ZHrRXuZNfkR3XLHSsuCK9Zn3X58lxBcQzuo5xZgB6vRwwm/QtJuF+zZPtY5hsQILBLmF+BZ5WpKZp1jBeSjH2G7lxet9kbcH+kIVj0tPFEoyKI9wvWqIwC4prx/WVk2wLTJjzBAhyNxfEq7C9CeiX9pQEbEqJfkKCQ== nocomment\n",
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Key: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQC4cn+iXnA4KvcQYSV88vGn0Yi91vG47t1P7okprVmhNTkipNRIHWr6WdCO4VDr/cvsRkuVJAsLO2enwjGWWueOO6BodiBgyAOZ/5t5nJNMCNuLGT5UIo/RI1b0WRQwxEZTRjt6mFNw6lH14wRd8ulsr9toSWBPMOGWoYs1PDeDL0JuTjL+tr1SZi/EyxCngpYszKdXllJEHyI79KQgeD0Vt3pTrkbNVTOEcCNqZePSVmUH8X8Vhugz3bnE0/iE9Pb5fkWO9c4AnM1FgI/8Bvp27Fw2ShryIXuR6kKvUqhVMTuOSDHwu6A8jLE5Owt3GAYugDpDYuwTVNGrHLXKpPzrGGPE/jPmaLCMZcsdkec95dYeU3zKODEm8UQZFhmJmDeWVJ36nGrGZHL4J5aTTaeFUJmmXDaJYiJ+K2/ioKgXqnXvltu0A9R8/LGy4nrTJRr4JMLuJFoUXvGm1gXQ70w2LSpk6yl71RNC0hCtsBe8BP8IhYCM0EP5jh7eCMQZNvM= nocomment\n",
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ReadOnly: true,
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}
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req := NewRequestWithJSON(t, "POST", keysURL, rawKeyBody)
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@ -79,7 +79,7 @@ func TestCreateReadWriteDeployKey(t *testing.T) {
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keysURL := fmt.Sprintf("/api/v1/repos/%s/%s/keys?token=%s", repoOwner.Name, repo.Name, token)
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rawKeyBody := api.CreateKeyOption{
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Title: "read-write",
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Key: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDsufOCrDDlT8DLkodnnJtbq7uGflcPae7euTfM+Laq4So+v4WeSV362Rg0O/+Sje1UthrhN6lQkfRkdWIlCRQEXg+LMqr6RhvDfZquE2Xwqv/itlz7LjbdAUdYoO1iH7rMSmYvQh4WEnC/DAacKGbhdGIM/ZBz0z6tHm7bPgbI9ykEKekTmPwQFP1Qebvf5NYOFMWqQ2sCEAI9dBMVLoojsIpV+KADf+BotiIi8yNfTG2rzmzpxBpW9fYjd1Sy1yd4NSUpoPbEJJYJ1TrjiSWlYOVq9Ar8xW1O87i6gBjL/3zN7ANeoYhaAXupdOS6YL22YOK/yC0tJtXwwdh/eSrh",
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Key: "ssh-rsa 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 nocomment\n",
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}
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req := NewRequestWithJSON(t, "POST", keysURL, rawKeyBody)
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resp := session.MakeRequest(t, req, http.StatusCreated)
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@ -102,7 +102,7 @@ func TestCreateUserKey(t *testing.T) {
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token := url.QueryEscape(getTokenForLoggedInUser(t, session))
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keysURL := fmt.Sprintf("/api/v1/user/keys?token=%s", token)
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keyType := "ssh-rsa"
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keyContent := "AAAAB3NzaC1yc2EAAAADAQABAAABAQCyTiPTeHJl6Gs5D1FyHT0qTWpVkAy9+LIKjctQXklrePTvUNVrSpt4r2exFYXNMPeA8V0zCrc3Kzs1SZw3jWkG3i53te9onCp85DqyatxOD2pyZ30/gPn1ZUg40WowlFM8gsUFMZqaH7ax6d8nsBKW7N/cRyqesiOQEV9up3tnKjIB8XMTVvC5X4rBWgywz7AFxSv8mmaTHnUgVW4LgMPwnTWo0pxtiIWbeMLyrEE4hIM74gSwp6CRQYo6xnG3fn4yWkcK2X2mT9adQ241IDdwpENJHcry/T6AJ8dNXduEZ67egnk+rVlQ2HM4LpymAv9DAAFFeaQK0hT+3aMDoumV"
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keyContent := "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"
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rawKeyBody := api.CreateKeyOption{
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Title: "test-key",
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Key: keyType + " " + keyContent,
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@ -57,6 +57,8 @@ func Test_SSHParsePublicKey(t *testing.T) {
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}
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func Test_CheckPublicKeyString(t *testing.T) {
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oldValue := setting.SSH.MinimumKeySizeCheck
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setting.SSH.MinimumKeySizeCheck = false
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for _, test := range []struct {
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content string
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}{
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@ -131,7 +133,7 @@ AAAAC3NzaC1lZDI1NTE5AAAAICV0MGX/W9IvLA4FXpIuUcdDcbj5KX4syHgsTy7soVgf
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_, err := CheckPublicKeyString(test.content)
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assert.NoError(t, err)
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}
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setting.SSH.MinimumKeySizeCheck = oldValue
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for _, invalidKeys := range []struct {
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content string
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}{
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@ -122,15 +122,16 @@ var (
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CreateAuthorizedKeysFile bool `ini:"SSH_CREATE_AUTHORIZED_KEYS_FILE"`
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ExposeAnonymous bool `ini:"SSH_EXPOSE_ANONYMOUS"`
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}{
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Disabled: false,
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StartBuiltinServer: false,
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Domain: "",
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Port: 22,
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ServerCiphers: []string{"aes128-ctr", "aes192-ctr", "aes256-ctr", "aes128-gcm@openssh.com", "arcfour256", "arcfour128"},
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ServerKeyExchanges: []string{"diffie-hellman-group1-sha1", "diffie-hellman-group14-sha1", "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521", "curve25519-sha256@libssh.org"},
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ServerMACs: []string{"hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1", "hmac-sha1-96"},
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KeygenPath: "ssh-keygen",
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MinimumKeySizes: map[string]int{"ed25519": 256, "ecdsa": 256, "rsa": 2048, "dsa": 1024},
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Disabled: false,
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StartBuiltinServer: false,
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Domain: "",
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Port: 22,
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ServerCiphers: []string{"aes128-ctr", "aes192-ctr", "aes256-ctr", "aes128-gcm@openssh.com", "arcfour256", "arcfour128"},
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ServerKeyExchanges: []string{"diffie-hellman-group1-sha1", "diffie-hellman-group14-sha1", "ecdh-sha2-nistp256", "ecdh-sha2-nistp384", "ecdh-sha2-nistp521", "curve25519-sha256@libssh.org"},
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ServerMACs: []string{"hmac-sha2-256-etm@openssh.com", "hmac-sha2-256", "hmac-sha1", "hmac-sha1-96"},
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KeygenPath: "ssh-keygen",
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MinimumKeySizeCheck: true,
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MinimumKeySizes: map[string]int{"ed25519": 256, "ecdsa": 256, "rsa": 2048},
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}
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// Security settings
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@ -679,7 +680,7 @@ func NewContext() {
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}
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}
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SSH.MinimumKeySizeCheck = sec.Key("MINIMUM_KEY_SIZE_CHECK").MustBool()
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SSH.MinimumKeySizeCheck = sec.Key("MINIMUM_KEY_SIZE_CHECK").MustBool(SSH.MinimumKeySizeCheck)
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minimumKeySizes := Cfg.Section("ssh.minimum_key_sizes").Keys()
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for _, key := range minimumKeySizes {
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if key.MustInt() != -1 {
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@ -50,7 +50,7 @@ func TestAddReadOnlyDeployKey(t *testing.T) {
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addKeyForm := auth.AddKeyForm{
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Title: "read-only",
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Content: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDAu7tvIvX6ZHrRXuZNfkR3XLHSsuCK9Zn3X58lxBcQzuo5xZgB6vRwwm/QtJuF+zZPtY5hsQILBLmF+BZ5WpKZp1jBeSjH2G7lxet9kbcH+kIVj0tPFEoyKI9wvWqIwC4prx/WVk2wLTJjzBAhyNxfEq7C9CeiX9pQEbEqJfkKCQ== nocomment\n",
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Content: "ssh-rsa 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 nocomment\n",
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}
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DeployKeysPost(ctx, addKeyForm)
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assert.EqualValues(t, http.StatusFound, ctx.Resp.Status())
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@ -78,7 +78,7 @@ func TestAddReadWriteOnlyDeployKey(t *testing.T) {
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addKeyForm := auth.AddKeyForm{
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Title: "read-write",
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Content: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQDAu7tvIvX6ZHrRXuZNfkR3XLHSsuCK9Zn3X58lxBcQzuo5xZgB6vRwwm/QtJuF+zZPtY5hsQILBLmF+BZ5WpKZp1jBeSjH2G7lxet9kbcH+kIVj0tPFEoyKI9wvWqIwC4prx/WVk2wLTJjzBAhyNxfEq7C9CeiX9pQEbEqJfkKCQ== nocomment\n",
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Content: "ssh-rsa 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 nocomment\n",
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IsWritable: true,
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}
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DeployKeysPost(ctx, addKeyForm)
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