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// Package fst exports shared fortify types.
package fst
import (
"git.gensokyo.uk/security/fortify/dbus"
"git.gensokyo.uk/security/fortify/system"
)
const Tmp = "/.fortify"
// Config is used to seal an app
type Config struct {
// reverse-DNS style arbitrary identifier string from config;
// passed to wayland security-context-v1 as application ID
// and used as part of defaults in dbus session proxy
ID string `json:"id"`
// absolute path to executable file
Path string `json:"path,omitempty"`
// final args passed to container init
Args []string `json:"args"`
Confinement ConfinementConfig `json:"confinement"`
}
// ConfinementConfig defines fortified child's confinement
type ConfinementConfig struct {
// numerical application id, determines uid in the init namespace
AppID int `json:"app_id"`
// list of supplementary groups to inherit
Groups []string `json:"groups"`
// passwd username in container, defaults to passwd name of target uid or chronos
Username string `json:"username,omitempty"`
// home directory in container, empty for outer
Inner string `json:"home_inner"`
// home directory in init namespace
Outer string `json:"home"`
// absolute path to shell, empty for host shell
Shell string `json:"shell,omitempty"`
// abstract sandbox configuration
Sandbox *SandboxConfig `json:"sandbox"`
// extra acl ops, runs after everything else
ExtraPerms []*ExtraPermConfig `json:"extra_perms,omitempty"`
// reference to a system D-Bus proxy configuration,
// nil value disables system bus proxy
SystemBus *dbus.Config `json:"system_bus,omitempty"`
// reference to a session D-Bus proxy configuration,
// nil value makes session bus proxy assume built-in defaults
SessionBus *dbus.Config `json:"session_bus,omitempty"`
// system resources to expose to the container
Enablements system.Enablement `json:"enablements"`
}
type ExtraPermConfig struct {
Ensure bool `json:"ensure,omitempty"`
Path string `json:"path"`
Read bool `json:"r,omitempty"`
Write bool `json:"w,omitempty"`
Execute bool `json:"x,omitempty"`
}
func (e *ExtraPermConfig) String() string {
buf := make([]byte, 0, 5+len(e.Path))
buf = append(buf, '-', '-', '-')
if e.Ensure {
buf = append(buf, '+')
}
buf = append(buf, ':')
buf = append(buf, []byte(e.Path)...)
if e.Read {
buf[0] = 'r'
}
if e.Write {
buf[1] = 'w'
}
if e.Execute {
buf[2] = 'x'
}
return string(buf)
}
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