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package config
import (
"errors"
)
// Permissions map. Each SSH user has a list of permissions which
// log files it is allowed to follow and which ones not.
type Permissions struct {
// The default user permissions.
Default []string
// The per user special permissions.
Users map[string][]string
}
// ServerConfig represents the server configuration.
type ServerConfig struct {
// The SSH server bind port.
SSHBindAddress string
// The max amount of concurrent user connection allowed to connect to the server.
MaxConnections int
// The max amount of concurrent cats per server.
MaxConcurrentCats int
// The max amount of concurrent tails per server.
MaxConcurrentTails int
// The user permissions.
Permissions Permissions `json:",omitempty"`
// The mapr log format
MapreduceLogFormat string `json:",omitempty"`
// The default path of the server host key
HostKeyFile string
// The host key size in bits
HostKeyBits int
}
// Create a new default server configuration.
func newDefaultServerConfig() *ServerConfig {
defaultPermissions := []string{"^/.*"}
defaultBindAddress := "0.0.0.0"
return &ServerConfig{
SSHBindAddress: defaultBindAddress,
MaxConnections: 10,
MaxConcurrentCats: 2,
MaxConcurrentTails: 50,
HostKeyFile: "./cache/ssh_host_key",
HostKeyBits: 4096,
Permissions: Permissions{
Default: defaultPermissions,
},
}
}
// ServerUserPermissions retrieves the permission set of a given user.
func ServerUserPermissions(userName string) (permissions []string, err error) {
permissions = Server.Permissions.Default
if p, ok := Server.Permissions.Users[userName]; ok {
permissions = p
}
if len(permissions) == 0 {
err = errors.New("Empty set of permission, user won't be able to open any files")
}
return
}
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