func (s *HTestSuite) TestSnapRunSnapExecEnv(c *C) {
info, err := snap.InfoFromSnapYaml(mockYaml)
c.Assert(err, IsNil)
info.SideInfo.Revision = snap.R(42)
usr, err := user.Current()
c.Assert(err, IsNil)
homeEnv := os.Getenv("HOME")
defer os.Setenv("HOME", homeEnv)
for _, withHomeEnv := range []bool{true, false} {
if !withHomeEnv {
os.Setenv("HOME", "")
}
env := snapEnv(info)
c.Check(env, DeepEquals, map[string]string{
"HOME": fmt.Sprintf("%s/snap/snapname/42", usr.HomeDir),
"SNAP": fmt.Sprintf("%s/snapname/42", dirs.SnapMountDir),
"SNAP_ARCH": arch.UbuntuArchitecture(),
"SNAP_COMMON": "/var/snap/snapname/common",
"SNAP_DATA": "/var/snap/snapname/42",
"SNAP_LIBRARY_PATH": "/var/lib/snapd/lib/gl:",
"SNAP_NAME": "snapname",
"SNAP_REEXEC": "",
"SNAP_REVISION": "42",
"SNAP_USER_COMMON": fmt.Sprintf("%s/snap/snapname/common", usr.HomeDir),
"SNAP_USER_DATA": fmt.Sprintf("%s/snap/snapname/42", usr.HomeDir),
"SNAP_VERSION": "1.0",
"XDG_RUNTIME_DIR": fmt.Sprintf("/run/user/%d/snap.snapname", os.Geteuid()),
})
}
}
// basicEnv returns the app-level environment variables for a snap.
// Despite this being a bit snap-specific, this is in helpers.go because it's
// used by so many other modules, we run into circular dependencies if it's
// somewhere more reasonable like the snappy module.
func basicEnv(info *snap.Info) map[string]string {
return map[string]string{
"SNAP": info.MountDir(),
"SNAP_COMMON": info.CommonDataDir(),
"SNAP_DATA": info.DataDir(),
"SNAP_NAME": info.Name(),
"SNAP_VERSION": info.Version,
"SNAP_REVISION": info.Revision.String(),
"SNAP_ARCH": arch.UbuntuArchitecture(),
"SNAP_LIBRARY_PATH": "/var/lib/snapd/lib/gl:",
"SNAP_REEXEC": os.Getenv("SNAP_REEXEC"),
}
}
func (ts *HTestSuite) TestBasic(c *C) {
env := basicEnv(mockSnapInfo)
c.Assert(env, DeepEquals, map[string]string{
"SNAP": fmt.Sprintf("%s/foo/17", dirs.SnapMountDir),
"SNAP_ARCH": arch.UbuntuArchitecture(),
"SNAP_COMMON": "/var/snap/foo/common",
"SNAP_DATA": "/var/snap/foo/17",
"SNAP_LIBRARY_PATH": "/var/lib/snapd/lib/gl:",
"SNAP_NAME": "foo",
"SNAP_REEXEC": "",
"SNAP_REVISION": "17",
"SNAP_VERSION": "1.0",
})
}
func (s *checkSnapSuite) TestCheckSnapErrorOnUnsupportedArchitecture(c *C) {
const yaml = `name: hello
version: 1.10
architectures:
- yadayada
- blahblah
`
info, err := snap.InfoFromSnapYaml([]byte(yaml))
c.Assert(err, IsNil)
var openSnapFile = func(path string, si *snap.SideInfo) (*snap.Info, snap.Container, error) {
c.Check(path, Equals, "snap-path")
c.Check(si, IsNil)
return info, nil, nil
}
restore := snapstate.MockOpenSnapFile(openSnapFile)
defer restore()
err = snapstate.CheckSnap(s.st, "snap-path", nil, nil, snapstate.Flags{})
errorMsg := fmt.Sprintf(`snap "hello" supported architectures (yadayada, blahblah) are incompatible with this system (%s)`, arch.UbuntuArchitecture())
c.Assert(err.Error(), Equals, errorMsg)
}
// checkSnap ensures that the snap can be installed.
func checkSnap(st *state.State, snapFilePath string, curInfo *snap.Info, flags Flags) error {
// This assumes that the snap was already verified or --dangerous was used.
s, _, err := openSnapFile(snapFilePath, nil)
if err != nil {
return err
}
if s.NeedsDevMode() && !flags.DevModeAllowed() {
return fmt.Errorf("snap %q requires devmode or confinement override", s.Name())
}
// verify we have a valid architecture
if !arch.IsSupportedArchitecture(s.Architectures) {
return fmt.Errorf("snap %q supported architectures (%s) are incompatible with this system (%s)", s.Name(), strings.Join(s.Architectures, ", "), arch.UbuntuArchitecture())
}
// check assumes
err = checkAssumes(s)
if err != nil {
return err
}
if s.Type != snap.TypeGadget {
return nil
}
// gadget specific checks
if release.OnClassic {
// for the time being
return fmt.Errorf("cannot install a gadget snap on classic")
}
st.Lock()
defer st.Unlock()
currentGadget, err := GadgetInfo(st)
// in firstboot we have no gadget yet - that is ok
if err == state.ErrNoState && !firstboot.HasRun() {
return nil
}
if err != nil {
return fmt.Errorf("cannot find original gadget snap")
}
// TODO: actually compare snap ids, from current gadget and candidate
if currentGadget.Name() != s.Name() {
return fmt.Errorf("cannot replace gadget snap with a different one")
}
return nil
}
func SetUserAgentFromVersion(version string) {
extras := make([]string, 1, 3)
extras[0] = "series " + release.Series
if release.OnClassic {
extras = append(extras, "classic")
}
if release.ReleaseInfo.ForceDevMode() {
extras = append(extras, "devmode")
}
// xxx this assumes ReleaseInfo's ID and VersionID don't have weird characters
// (see rfc 7231 for values of weird)
// assumption checks out in practice, q.v. https://github.com/zyga/os-release-zoo
userAgent = fmt.Sprintf("snapd/%v (%s) %s/%s (%s)", version, strings.Join(extras, "; "), release.ReleaseInfo.ID, release.ReleaseInfo.VersionID, string(arch.UbuntuArchitecture()))
}
// New creates a new Store with the given access configuration and for given the store id.
func New(cfg *Config, authContext auth.AuthContext) *Store {
if cfg == nil {
cfg = &defaultConfig
}
fields := cfg.DetailFields
if fields == nil {
fields = detailFields
}
rawQuery := ""
if len(fields) > 0 {
v := url.Values{}
v.Set("fields", strings.Join(fields, ","))
rawQuery = v.Encode()
}
var searchURI *url.URL
if cfg.SearchURI != nil {
uri := *cfg.SearchURI
uri.RawQuery = rawQuery
searchURI = &uri
}
var detailsURI *url.URL
if cfg.DetailsURI != nil {
uri := *cfg.DetailsURI
uri.RawQuery = rawQuery
detailsURI = &uri
}
var sectionsURI *url.URL
if cfg.SectionsURI != nil {
uri := *cfg.SectionsURI
uri.RawQuery = rawQuery
sectionsURI = &uri
}
architecture := arch.UbuntuArchitecture()
if cfg.Architecture != "" {
architecture = cfg.Architecture
}
series := release.Series
if cfg.Series != "" {
series = cfg.Series
}
deltaFormat := cfg.DeltaFormat
if deltaFormat == "" {
deltaFormat = defaultSupportedDeltaFormat
}
// see https://wiki.ubuntu.com/AppStore/Interfaces/ClickPackageIndex
return &Store{
searchURI: searchURI,
detailsURI: detailsURI,
bulkURI: cfg.BulkURI,
assertionsURI: cfg.AssertionsURI,
ordersURI: cfg.OrdersURI,
customersMeURI: cfg.CustomersMeURI,
sectionsURI: sectionsURI,
series: series,
architecture: architecture,
fallbackStoreID: cfg.StoreID,
detailFields: fields,
authContext: authContext,
deltaFormat: deltaFormat,
client: newHTTPClient(&httpClientOpts{
Timeout: 10 * time.Second,
MayLogBody: true,
}),
}
}
// New creates a new Store with the given access configuration and for given the store id.
func New(cfg *Config, authContext auth.AuthContext) *Store {
deltaDirs, _ := filepath.Glob(filepath.Join(dirs.SnapPartialBlobDir, "deltas-*"))
for _, dir := range deltaDirs {
os.RemoveAll(dir)
}
if cfg == nil {
cfg = &defaultConfig
}
fields := cfg.DetailFields
if fields == nil {
fields = detailFields
}
rawQuery := ""
if len(fields) > 0 {
v := url.Values{}
v.Set("fields", strings.Join(fields, ","))
rawQuery = v.Encode()
}
var searchURI *url.URL
if cfg.SearchURI != nil {
uri := *cfg.SearchURI
uri.RawQuery = rawQuery
searchURI = &uri
}
var detailsURI *url.URL
if cfg.DetailsURI != nil {
uri := *cfg.DetailsURI
uri.RawQuery = rawQuery
detailsURI = &uri
}
architecture := arch.UbuntuArchitecture()
if cfg.Architecture != "" {
architecture = cfg.Architecture
}
series := release.Series
if cfg.Series != "" {
series = cfg.Series
}
deltaFormat := cfg.DeltaFormat
if deltaFormat == "" {
deltaFormat = defaultSupportedDeltaFormat
}
// see https://wiki.ubuntu.com/AppStore/Interfaces/ClickPackageIndex
return &Store{
searchURI: searchURI,
detailsURI: detailsURI,
bulkURI: cfg.BulkURI,
assertionsURI: cfg.AssertionsURI,
ordersURI: cfg.OrdersURI,
customersMeURI: cfg.CustomersMeURI,
series: series,
architecture: architecture,
fallbackStoreID: cfg.StoreID,
detailFields: fields,
client: newHTTPClient(),
authContext: authContext,
deltaFormat: deltaFormat,
}
}
[Service] ExecStart=/usr/bin/snap run snap.app Restart=on-failure WorkingDirectory=/var/snap/snap/44 ExecStop=/usr/bin/snap run --command=stop snap.app ExecStopPost=/usr/bin/snap run --command=post-stop snap.app TimeoutStopSec=10 %[2]s [Install] WantedBy=multi-user.target ` var ( expectedAppService = fmt.Sprintf(expectedServiceFmt, "After=snapd.frameworks.target\nRequires=snapd.frameworks.target", "Type=simple\n", arch.UbuntuArchitecture(), dirs.SnapMountDir) expectedDbusService = fmt.Sprintf(expectedServiceFmt, "After=snapd.frameworks.target\nRequires=snapd.frameworks.target", "Type=dbus\nBusName=foo.bar.baz", arch.UbuntuArchitecture(), dirs.SnapMountDir) ) var ( expectedServiceWrapperFmt = `[Unit] # Auto-generated, DO NO EDIT Description=Service for snap application xkcd-webserver.xkcd-webserver %s X-Snappy=yes [Service] ExecStart=/usr/bin/snap run xkcd-webserver Restart=on-failure WorkingDirectory=/var/snap/xkcd-webserver/44 ExecStop=/usr/bin/snap run --command=stop xkcd-webserver
// checkSnap ensures that the snap can be installed.
func checkSnap(st *state.State, snapFilePath string, si *snap.SideInfo, curInfo *snap.Info, flags Flags) error {
// This assumes that the snap was already verified or --dangerous was used.
s, _, err := openSnapFile(snapFilePath, si)
if err != nil {
return err
}
if s.NeedsDevMode() && !flags.DevModeAllowed() {
return fmt.Errorf("snap %q requires devmode or confinement override", s.Name())
}
if s.NeedsClassic() {
if !release.OnClassic {
return fmt.Errorf("snap %q requires classic confinement which is only available on classic systems", s.Name())
}
if !flags.Classic {
return fmt.Errorf("snap %q requires consent to use classic confinement", s.Name())
}
}
// verify we have a valid architecture
if !arch.IsSupportedArchitecture(s.Architectures) {
return fmt.Errorf("snap %q supported architectures (%s) are incompatible with this system (%s)", s.Name(), strings.Join(s.Architectures, ", "), arch.UbuntuArchitecture())
}
// check assumes
err = checkAssumes(s)
if err != nil {
return err
}
st.Lock()
defer st.Unlock()
for _, check := range checkSnapCallbacks {
err := check(st, s, curInfo, flags)
if err != nil {
return err
}
}
return nil
}
func archWithBrokenDevPtmx() error {
if ubuArch := arch.UbuntuArchitecture(); ubuArch == "ppc64el" || ubuArch == "powerpc" {
return fmt.Errorf("/dev/ptmx ioctl not working on %s", ubuArch)
}
return nil
}