{
    "title": "A list of SSH FS configurations",
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "definitions": {
        "fields": {
            "name": {
                "type": "string",
                "description": "The unique name for this configuration"
            },
            "label": {
                "type": "string",
                "description": "A display name used in some user interface places"
            },
            "root": {
                "type": "string",
                "description": "The remote folder to act as root folder",
                "default": "/"
            },
            "host": {
                "type": "string",
                "description": "Hostname or IP address of the server"
            },
            "port": {
                "type": "number",
                "description": "Port number of the server",
                "default": 22
            },
            "username": {
                "type": "string",
                "description": "Username for authentication"
            },
            "password": {
                "type": [
                    "string",
                    "boolean"
                ],
                "description": "Password for password-based user authentication"
            },
            "privateKey": {
                "type": "string",
                "description": "String that contains a private key for either key-based or hostbased user authentication (OpenSSH format)"
            },
            "privateKeyPath": {
                "type": "string",
                "description": "String that contains the path to a private key for either key-based or hostbased user authentication (OpenSSH format)"
            },
            "passphrase": {
                "type": [
                    "string",
                    "boolean"
                ],
                "description": "For an encrypted private key, this is the passphrase used to decrypt it"
            },
            "agent": {
                "type": "string",
                "description": "Path to ssh-agent's UNIX socket for ssh-agent-based user authentication (or 'pageant' when using Pagent on Windows)"
            },
            "putty": {
                "type": [
                    "string",
                    "boolean"
                ],
                "description": "(Windows only) Use the settings from the given PuTTY session (set this to true to find one using the other settings)"
            },
            "hop": {
                "type": "string",
                "description": "Use another SSH configuration as intermediate proxy (connection hopping)"
            },
            "proxy": {
                "type": "object",
                "description": "Define a SOCKS 4 or SOCKS 5 proxy to connect through",
                "required": [
                    "host",
                    "port",
                    "type"
                ],
                "properties": {
                    "host": {
                        "type": "string",
                        "description": "The hostname of the proxy"
                    },
                    "port": {
                        "type": "number",
                        "description": "The port of the proxy"
                    },
                    "type": {
                        "description": "The type of the proxy (socks4/socks5)",
                        "enum": [
                            "socks4",
                            "socks5"
                        ]
                    }
                }
            }
        },
        "basic": {
            "type": "object",
            "properties": {
                "label": {
                    "$ref": "#/definitions/fields/label"
                },
                "root": {
                    "$ref": "#/definitions/fields/root"
                },
                "hop": {
                    "$ref": "#/definitions/fields/hop"
                },
                "proxy": {
                    "$ref": "#/definitions/fields/proxy"
                }
            }
        },
        "authentication": {
            "anyOf": [
                {
                    "$ref": "#/definitions/authentication-types/password"
                },
                {
                    "$ref": "#/definitions/authentication-types/agent"
                },
                {
                    "oneOf": [
                        {
                            "$ref": "#/definitions/authentication-types/key"
                        },
                        {
                            "$ref": "#/definitions/authentication-types/key-path"
                        }
                    ]
                }
            ]
        },
        "authentication-types": {
            "password": {
                "type": "object",
                "required": [
                    "username",
                    "password"
                ],
                "properties": {
                    "username": {
                        "$ref": "#/definitions/fields/username"
                    },
                    "password": {
                        "$ref": "#/definitions/fields/password"
                    }
                }
            },
            "key": {
                "type": "object",
                "required": [
                    "username",
                    "privateKey"
                ],
                "properties": {
                    "username": {
                        "$ref": "#/definitions/fields/username"
                    },
                    "privateKey": {
                        "$ref": "#/definitions/fields/privateKey"
                    },
                    "passphrase": {
                        "$ref": "#/definitions/fields/passphrase"
                    }
                }
            },
            "key-path": {
                "type": "object",
                "required": [
                    "username",
                    "privateKeyPath"
                ],
                "properties": {
                    "username": {
                        "$ref": "#/definitions/fields/username"
                    },
                    "privateKeyPath": {
                        "$ref": "#/definitions/fields/privateKeyPath"
                    },
                    "passphrase": {
                        "$ref": "#/definitions/fields/passphrase"
                    }
                }
            },
            "agent": {
                "type": "object",
                "required": [
                    "username",
                    "agent"
                ],
                "properties": {
                    "username": {
                        "$ref": "#/definitions/fields/username"
                    },
                    "agent": {
                        "$ref": "#/definitions/fields/agent"
                    }
                }
            }
        },
        "server-identification": {
            "hostname": {
                "required": [
                    "host"
                ],
                "properties": {
                    "host": {
                        "$ref": "#/definitions/fields/host"
                    },
                    "port": {
                        "$ref": "#/definitions/fields/port"
                    }
                }
            },
            "putty": {
                "required": [
                    "putty"
                ],
                "properties": {
                    "putty": {
                        "$ref": "#/definitions/fields/putty"
                    }
                }
            }
        }
    },
    "allOf": [
        {
            "$ref": "#/definitions/basic"
        },
        {
            "oneOf": [
                {
                    "allOf": [
                        {
                            "$ref": "#/definitions/server-identification/hostname"
                        },
                        {
                            "$ref": "#/definitions/authentication"
                        }
                    ]
                },
                {
                    "allOf": [
                        {
                            "$ref": "#/definitions/server-identification/putty"
                        },
                        {
                            "anyOf": [
                                {
                                    "$ref": "#/definitions/authentication"
                                },
                                {}
                            ]
                        }
                    ]
                }
            ]
        }
    ]
}