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package main
import (
"encoding/json"
"log"
"os"
"hakurei.app/container"
"hakurei.app/container/check"
"hakurei.app/hst"
)
type appInfo struct {
Name string `json:"name"`
Version string `json:"version"`
// passed through to [hst.Config]
ID string `json:"id"`
// passed through to [hst.Config]
Identity int `json:"identity"`
// passed through to [hst.Config]
Groups []string `json:"groups,omitempty"`
// passed through to [hst.Config]
Devel bool `json:"devel,omitempty"`
// passed through to [hst.Config]
Userns bool `json:"userns,omitempty"`
// passed through to [hst.Config]
HostNet bool `json:"net,omitempty"`
// passed through to [hst.Config]
HostAbstract bool `json:"abstract,omitempty"`
// passed through to [hst.Config]
Device bool `json:"dev,omitempty"`
// passed through to [hst.Config]
Tty bool `json:"tty,omitempty"`
// passed through to [hst.Config]
MapRealUID bool `json:"map_real_uid,omitempty"`
// passed through to [hst.Config]
DirectWayland bool `json:"direct_wayland,omitempty"`
// passed through to [hst.Config]
SystemBus *hst.BusConfig `json:"system_bus,omitempty"`
// passed through to [hst.Config]
SessionBus *hst.BusConfig `json:"session_bus,omitempty"`
// passed through to [hst.Config]
Enablements *hst.Enablements `json:"enablements,omitempty"`
// passed through to [hst.Config]
Multiarch bool `json:"multiarch,omitempty"`
// passed through to [hst.Config]
Bluetooth bool `json:"bluetooth,omitempty"`
// allow gpu access within sandbox
GPU bool `json:"gpu"`
// store path to nixGL mesa wrappers
Mesa string `json:"mesa,omitempty"`
// store path to nixGL source
NixGL string `json:"nix_gl,omitempty"`
// store path to activate-and-exec script
Launcher *check.Absolute `json:"launcher"`
// store path to /run/current-system
CurrentSystem *check.Absolute `json:"current_system"`
// store path to home-manager activation package
ActivationPackage string `json:"activation_package"`
}
func (app *appInfo) toHst(pathSet *appPathSet, pathname *check.Absolute, argv []string, flagDropShell bool) *hst.Config {
config := &hst.Config{
ID: app.ID,
Enablements: app.Enablements,
SystemBus: app.SystemBus,
SessionBus: app.SessionBus,
DirectWayland: app.DirectWayland,
Identity: app.Identity,
Groups: app.Groups,
Container: &hst.ContainerConfig{
Hostname: formatHostname(app.Name),
Devel: app.Devel,
Userns: app.Userns,
HostNet: app.HostNet,
HostAbstract: app.HostAbstract,
Device: app.Device,
Tty: app.Tty || flagDropShell,
MapRealUID: app.MapRealUID,
Multiarch: app.Multiarch,
Filesystem: []hst.FilesystemConfigJSON{
{FilesystemConfig: &hst.FSBind{Target: container.AbsFHSEtc, Source: pathSet.cacheDir.Append("etc"), Special: true}},
{FilesystemConfig: &hst.FSBind{Source: pathSet.nixPath.Append("store"), Target: pathNixStore}},
{FilesystemConfig: &hst.FSLink{Target: pathCurrentSystem, Linkname: app.CurrentSystem.String()}},
{FilesystemConfig: &hst.FSLink{Target: pathBin, Linkname: pathSwBin.String()}},
{FilesystemConfig: &hst.FSLink{Target: container.AbsFHSUsrBin, Linkname: pathSwBin.String()}},
{FilesystemConfig: &hst.FSBind{Source: pathSet.metaPath, Target: hst.AbsTmp.Append("app")}},
{FilesystemConfig: &hst.FSBind{Source: container.AbsFHSEtc.Append("resolv.conf"), Optional: true}},
{FilesystemConfig: &hst.FSBind{Source: container.AbsFHSSys.Append("block"), Optional: true}},
{FilesystemConfig: &hst.FSBind{Source: container.AbsFHSSys.Append("bus"), Optional: true}},
{FilesystemConfig: &hst.FSBind{Source: container.AbsFHSSys.Append("class"), Optional: true}},
{FilesystemConfig: &hst.FSBind{Source: container.AbsFHSSys.Append("dev"), Optional: true}},
{FilesystemConfig: &hst.FSBind{Source: container.AbsFHSSys.Append("devices"), Optional: true}},
{FilesystemConfig: &hst.FSBind{Target: pathDataData.Append(app.ID), Source: pathSet.homeDir, Write: true, Ensure: true}},
},
Username: "hakurei",
Shell: pathShell,
Home: pathDataData.Append(app.ID),
Path: pathname,
Args: argv,
},
ExtraPerms: []*hst.ExtraPermConfig{
{Path: dataHome, Execute: true},
{Ensure: true, Path: pathSet.baseDir, Read: true, Write: true, Execute: true},
},
}
return config
}
func loadAppInfo(name string, beforeFail func()) *appInfo {
bundle := new(appInfo)
if f, err := os.Open(name); err != nil {
beforeFail()
log.Fatalf("cannot open bundle: %v", err)
} else if err = json.NewDecoder(f).Decode(&bundle); err != nil {
beforeFail()
log.Fatalf("cannot parse bundle metadata: %v", err)
} else if err = f.Close(); err != nil {
log.Printf("cannot close bundle metadata: %v", err)
// not fatal
}
if bundle.ID == "" {
beforeFail()
log.Fatal("application identifier must not be empty")
}
if bundle.Launcher == nil {
beforeFail()
log.Fatal("launcher must not be empty")
}
if bundle.CurrentSystem == nil {
beforeFail()
log.Fatal("current-system must not be empty")
}
return bundle
}
func formatHostname(name string) string {
if h, err := os.Hostname(); err != nil {
log.Printf("cannot get hostname: %v", err)
return "hakurei-" + name
} else {
return h + "-" + name
}
}
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