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installed_package.go
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/
installed_package.go
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// Copyright (C) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package android
import (
"context"
"fmt"
"regexp"
"strconv"
"strings"
"github.com/google/gapid/core/os/device"
)
// https://android.googlesource.com/platform/bionic/+/master/libc/include/sys/system_properties.h#38
// Actually 32, but that includes null-terminator.
const maxPropName = 31
// InstalledPackage describes a package installed on a device.
type InstalledPackage struct {
Name string // Name of the package.
Device Device // The device this package is installed on.
ActivityActions ActivityActions // The activity actions this package supports.
ServiceActions ServiceActions // The service actions this package supports.
ABI *device.ABI // The ABI of the package or empty
Debuggable bool // Whether the package is debuggable or not
VersionCode int // The version code as reported by the manifest.
VersionName string // The version name as reported by the manifest.
MinSDK int // The minimum SDK reported by the manifest.
TargetSdk int // The target SDK reported by the manifest.
}
// InstalledPackages is a list of installed packages.
type InstalledPackages []*InstalledPackage
func (l InstalledPackages) Len() int { return len(l) }
func (l InstalledPackages) Less(i, j int) bool { return l[i].Name < l[j].Name }
func (l InstalledPackages) Swap(i, j int) { l[i], l[j] = l[j], l[i] }
// ErrProcessNotFound is returned by InstalledPackage.Pid when no running process of the package is found.
var ErrProcessNotFound = fmt.Errorf("Process not found")
// FindByPartialName returns a list of installed packages whose name contains or
// equals s (case insensitive).
func (l InstalledPackages) FindByPartialName(s string) InstalledPackages {
s = strings.ToLower(s)
found := make(InstalledPackages, 0, 1)
for _, p := range l {
if strings.Contains(strings.ToLower(p.Name), s) {
found = append(found, p)
}
}
return found
}
// FindByName returns the installed package whose name exactly matches s.
func (l InstalledPackages) FindByName(s string) *InstalledPackage {
for _, p := range l {
if p.Name == s {
return p
}
}
return nil
}
// FindSingleByPartialName returns the single installed package whose name
// contains or equals s (case insensitive). If none or more than one packages
// partially matches s then an error is returned. If a package exactly matches s
// then that is returned regardless of any partial matches.
func (l InstalledPackages) FindSingleByPartialName(s string) (*InstalledPackage, error) {
found := l.FindByPartialName(s)
if len(found) == 0 {
return nil, fmt.Errorf("No packages found containing the name '%v'", s)
}
if len(found) > 1 {
names := make([]string, len(found))
for i, p := range found {
if p.Name == s { // Exact match
return p, nil
}
names[i] = p.Name
}
return nil, fmt.Errorf("%v packages found containing the name '%v':\n%v",
len(found), s, strings.Join(names, "\n"))
}
return found[0], nil
}
// WrapProperties returns the list of wrap-properties for the given installed
// package.
func (p *InstalledPackage) WrapProperties(ctx context.Context) ([]string, error) {
list, err := p.Device.Shell("getprop", p.wrapPropName()).Call(ctx)
return strings.Fields(list), err
}
// SetWrapProperties sets the list of wrap-properties for the given installed
// package.
func (p *InstalledPackage) SetWrapProperties(ctx context.Context, props ...string) error {
arg := strings.Join(props, " ")
res, err := p.Device.Shell("setprop", p.wrapPropName(), arg).Call(ctx)
if res != "" {
return fmt.Errorf("setprop returned error:\n%s", res)
}
return err
}
// ClearCache deletes all data associated with a package.
func (p *InstalledPackage) ClearCache(ctx context.Context) error {
return p.Device.Shell("pm", "clear", p.Name).Run(ctx)
}
// Stop stops any activities belonging to the package from running on the device.
func (p *InstalledPackage) Stop(ctx context.Context) error {
return p.Device.Shell("am", "force-stop", p.Name).Run(ctx)
}
// Path returns the absolute path of the installed package on the device.
func (p *InstalledPackage) Path(ctx context.Context) (string, error) {
out, err := p.Device.Shell("pm", "path", p.Name).Call(ctx)
if err != nil {
return "", err
}
prefix := "package:"
if !strings.HasPrefix(out, prefix) {
return "", fmt.Errorf("Unexpected output: '%s'", out)
}
path := out[len(prefix):]
return path, err
}
// FileDir returns the absolute path of the installed packages files directory.
func (p *InstalledPackage) FileDir(ctx context.Context) (string, error) {
out, err := p.Device.Shell("run-as", p.Name, "pwd").Call(ctx)
if err != nil {
return "", err
}
path := out + "/files"
return path, err
}
// Pid returns the PID of the newest (if pgrep exists) running process belonging to the given package.
func (p *InstalledPackage) Pid(ctx context.Context) (int, error) {
// First, try pgrep.
out, err := p.Device.Shell("pgrep", "-n", "-f", p.Name).Call(ctx)
if err == nil {
if out == "" {
// Empty pgrep output. Process not found.
return -1, ErrProcessNotFound
}
if regexp.MustCompile("^[0-9]+$").MatchString(out) {
pid, _ := strconv.Atoi(out)
return pid, nil
}
}
// pgrep not found or other error, fall back to trying ps.
out, err = p.Device.Shell("ps").Call(ctx)
if err != nil {
return -1, err
}
matches := regexp.MustCompile(
`(?m)^\S+\s+([0-9]+)\s+[0-9]+\s+[0-9]+\s+[^\n\r]*\s+(\S+)\s*$`).FindAllStringSubmatch(out, -1)
if matches != nil {
// If we're here, we're getting sensible output from ps.
for _, match := range matches {
if match[2] == p.Name {
pid, _ := strconv.Atoi(match[1])
return pid, nil
}
}
// Process not found.
return -1, ErrProcessNotFound
}
return -1, fmt.Errorf("failed to get pid for package (pgrep and ps both missing or misbehaving)")
}
// Pull pulls the installed package from the device to the specified local directory.
func (p *InstalledPackage) Pull(ctx context.Context, target string) error {
path, err := p.Path(ctx)
if err != nil {
return err
}
return p.Device.Pull(ctx, path, target)
}
// Uninstall uninstalls the package from the device.
func (p *InstalledPackage) Uninstall(ctx context.Context) error {
return p.Device.Shell("pm", "uninstall", p.Name).Run(ctx)
}
// String returns the package name.
func (p *InstalledPackage) String() string {
return p.Name
}
func (p *InstalledPackage) wrapPropName() string {
name := "wrap." + p.Name
if len(name) > maxPropName {
// The property name must not end in dot
name = strings.TrimRight(name[:maxPropName], ".")
}
return name
}