ooni-probe-cli/internal/cmd/miniooni/libminiooni.go
Simone Basso 086ae43b15
refactor(engine): set options from any value (#837)
This diff refactors how we set options for experiments to accept
in input an any value or a map[string]any, depending on which method
we choose to actually set options.

There should be no functional change, except that now we're not
guessing the type and then attempting to set the value of the selected
field: now, instead, we match the provided type and the field's type
as part of the same function (i.e., SetOptionAny).

This diff is functional to https://github.com/ooni/probe/issues/2184,
because it will allow us to load options from a map[string]any,
which will be part of the OONI Run v2 JSON descriptor.

If we didn't apply this change, we would only have been to set options
from a map[string]string, which is good enough as a solution for the
CLI but is definitely clumsy when you have to write stuff like:

```JSON
{
  "options": {
    "HTTP3Enabled": "true"
  }
}
```

when you could instead more naturally write:

```JSON
{
  "options": {
    "HTTP3Enabled": true
  }
}
```
2022-07-08 11:51:59 +02:00

493 lines
14 KiB
Go

package main
import (
"context"
"errors"
"fmt"
"io"
"math/rand"
"net/url"
"os"
"path"
"path/filepath"
"runtime"
"strings"
"time"
"github.com/apex/log"
"github.com/ooni/probe-cli/v3/internal/engine"
"github.com/ooni/probe-cli/v3/internal/humanize"
"github.com/ooni/probe-cli/v3/internal/kvstore"
"github.com/ooni/probe-cli/v3/internal/legacy/assetsdir"
"github.com/ooni/probe-cli/v3/internal/model"
"github.com/ooni/probe-cli/v3/internal/version"
"github.com/pborman/getopt/v2"
)
// Options contains the options you can set from the CLI.
type Options struct {
Annotations []string
ExtraOptions []string
HomeDir string
Inputs []string
InputFilePaths []string
Limit int64
MaxRuntime int64
NoJSON bool
NoCollector bool
ProbeServicesURL string
Proxy string
Random bool
ReportFile string
TorArgs []string
TorBinary string
Tunnel string
Verbose bool
Version bool
Yes bool
}
const (
softwareName = "miniooni"
softwareVersion = version.Version
)
var (
globalOptions Options
startTime = time.Now()
)
func init() {
getopt.FlagLong(
&globalOptions.Annotations, "annotation", 'A', "Add annotaton", "KEY=VALUE",
)
getopt.FlagLong(
&globalOptions.ExtraOptions, "option", 'O',
"Pass an option to the experiment", "KEY=VALUE",
)
getopt.FlagLong(
&globalOptions.InputFilePaths, "input-file", 'f',
"Path to input file to supply test-dependent input. File must contain one input per line.", "PATH",
)
getopt.FlagLong(
&globalOptions.HomeDir, "home", 0,
"Force specific home directory", "PATH",
)
getopt.FlagLong(
&globalOptions.Inputs, "input", 'i',
"Add test-dependent input to the test input", "INPUT",
)
getopt.FlagLong(
&globalOptions.Limit, "limit", 0,
"Limit the number of URLs tested by Web Connectivity", "N",
)
getopt.FlagLong(
&globalOptions.MaxRuntime, "max-runtime", 0,
"Maximum runtime in seconds when looping over a list of inputs (zero means infinite)", "N",
)
getopt.FlagLong(
&globalOptions.NoJSON, "no-json", 'N', "Disable writing to disk",
)
getopt.FlagLong(
&globalOptions.NoCollector, "no-collector", 'n', "Don't use a collector",
)
getopt.FlagLong(
&globalOptions.ProbeServicesURL, "probe-services", 0,
"Set the URL of the probe-services instance you want to use", "URL",
)
getopt.FlagLong(
&globalOptions.Proxy, "proxy", 0, "Set the proxy URL", "URL",
)
getopt.FlagLong(
&globalOptions.Random, "random", 0, "Randomize inputs",
)
getopt.FlagLong(
&globalOptions.ReportFile, "reportfile", 'o',
"Set the report file path", "PATH",
)
getopt.FlagLong(
&globalOptions.TorArgs, "tor-args", 0,
"Extra args for tor binary (may be specified multiple times)",
)
getopt.FlagLong(
&globalOptions.TorBinary, "tor-binary", 0,
"Specify path to a specific tor binary",
)
getopt.FlagLong(
&globalOptions.Tunnel, "tunnel", 0,
"Name of the tunnel to use (one of `tor`, `psiphon`)",
)
getopt.FlagLong(
&globalOptions.Verbose, "verbose", 'v', "Increase verbosity",
)
getopt.FlagLong(
&globalOptions.Version, "version", 0, "Print version and exit",
)
getopt.FlagLong(
&globalOptions.Yes, "yes", 0, "I accept the risk of running OONI",
)
}
func fatalIfFalse(cond bool, msg string) {
if !cond {
panic(msg)
}
}
func fatalIfTrue(cond bool, msg string) {
fatalIfFalse(!cond, msg)
}
// Main is the main function of miniooni. This function parses the command line
// options and uses a global state. Use MainWithConfiguration if you want to avoid
// using any global state and relying on command line options.
//
// This function will panic in case of a fatal error. It is up to you that
// integrate this function to either handle the panic of ignore it.
func Main() {
getopt.Parse()
if globalOptions.Version {
fmt.Printf("%s\n", version.Version)
os.Exit(0)
}
fatalIfFalse(len(getopt.Args()) == 1, "Missing experiment name")
fatalOnError(engine.CheckEmbeddedPsiphonConfig(), "Invalid embedded psiphon config")
MainWithConfiguration(getopt.Arg(0), globalOptions)
}
func split(s string) (string, string, error) {
v := strings.SplitN(s, "=", 2)
if len(v) != 2 {
return "", "", errors.New("invalid key-value pair")
}
return v[0], v[1], nil
}
func fatalOnError(err error, msg string) {
if err != nil {
log.WithError(err).Warn(msg)
panic(msg)
}
}
func warnOnError(err error, msg string) {
if err != nil {
log.WithError(err).Warn(msg)
}
}
func mustMakeMapString(input []string) (output map[string]string) {
output = make(map[string]string)
for _, opt := range input {
key, value, err := split(opt)
fatalOnError(err, "cannot split key-value pair")
output[key] = value
}
return
}
func mustMakeMapAny(input []string) (output map[string]any) {
output = make(map[string]any)
for _, opt := range input {
key, value, err := split(opt)
fatalOnError(err, "cannot split key-value pair")
output[key] = value
}
return
}
func mustParseURL(URL string) *url.URL {
rv, err := url.Parse(URL)
fatalOnError(err, "cannot parse URL")
return rv
}
type logHandler struct {
io.Writer
}
func (h *logHandler) HandleLog(e *log.Entry) (err error) {
s := fmt.Sprintf("[%14.6f] <%s> %s", time.Since(startTime).Seconds(), e.Level, e.Message)
if len(e.Fields) > 0 {
s += fmt.Sprintf(": %+v", e.Fields)
}
s += "\n"
_, err = h.Writer.Write([]byte(s))
return
}
// See https://gist.github.com/miguelmota/f30a04a6d64bd52d7ab59ea8d95e54da
func gethomedir(optionsHome string) string {
if optionsHome != "" {
return optionsHome
}
if runtime.GOOS == "windows" {
home := os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
if home == "" {
home = os.Getenv("USERPROFILE")
}
return home
}
if runtime.GOOS == "linux" {
home := os.Getenv("XDG_CONFIG_HOME")
if home != "" {
return home
}
// fallthrough
}
return os.Getenv("HOME")
}
const riskOfRunningOONI = `
Do you consent to OONI Probe data collection?
OONI Probe collects evidence of internet censorship and measures
network performance:
- OONI Probe will likely test objectionable sites and services;
- Anyone monitoring your internet activity (such as a government
or Internet provider) may be able to tell that you are using OONI Probe;
- The network data you collect will be published automatically
unless you use miniooni's -n command line flag.
To learn more, see https://ooni.org/about/risks/.
If you're onboard, re-run the same command and add the --yes flag, to
indicate that you understand the risks. This will create an empty file
named 'consent' in $HOME/.miniooni, meaning that we know you opted in
and we will not ask you this question again.
`
func canOpen(filepath string) bool {
stat, err := os.Stat(filepath)
return err == nil && stat.Mode().IsRegular()
}
func maybeWriteConsentFile(yes bool, filepath string) (err error) {
if yes {
err = os.WriteFile(filepath, []byte("\n"), 0644)
}
return
}
// limitRemoved is the text printed when the user uses --limit
const limitRemoved = `USAGE CHANGE: The --limit option has been removed in favor of
the --max-runtime option. Please, update your script to use --max-runtime
instead of --limit. The argument to --max-runtime is the maximum number
of seconds after which to stop running Web Connectivity.
This error message will be removed after 2021-11-01.
`
// tunnelAndProxy is the text printed when the user specifies
// both the --tunnel and the --proxy options
const tunnelAndProxy = `USAGE ERROR: The --tunnel option and the --proxy
option cannot be specified at the same time. The --tunnel option is actually
just syntactic sugar for --proxy. Setting --tunnel=psiphon is currently the
equivalent of setting --proxy=psiphon:///. This MAY change in a future version
of miniooni, when we will allow a tunnel to use a proxy.
`
// MainWithConfiguration is the miniooni main with a specific configuration
// represented by the experiment name and the current options.
//
// This function will panic in case of a fatal error. It is up to you that
// integrate this function to either handle the panic of ignore it.
func MainWithConfiguration(experimentName string, currentOptions Options) {
fatalIfFalse(currentOptions.Limit == 0, limitRemoved)
fatalIfTrue(currentOptions.Proxy != "" && currentOptions.Tunnel != "",
tunnelAndProxy)
if currentOptions.Tunnel != "" {
currentOptions.Proxy = fmt.Sprintf("%s:///", currentOptions.Tunnel)
}
ctx := context.Background()
extraOptions := mustMakeMapAny(currentOptions.ExtraOptions)
annotations := mustMakeMapString(currentOptions.Annotations)
logger := &log.Logger{Level: log.InfoLevel, Handler: &logHandler{Writer: os.Stderr}}
if currentOptions.Verbose {
logger.Level = log.DebugLevel
}
if currentOptions.ReportFile == "" {
currentOptions.ReportFile = "report.jsonl"
}
log.Log = logger
//Mon Jan 2 15:04:05 -0700 MST 2006
log.Infof("Current time: %s", time.Now().Format("2006-01-02 15:04:05 MST"))
homeDir := gethomedir(currentOptions.HomeDir)
fatalIfFalse(homeDir != "", "home directory is empty")
miniooniDir := path.Join(homeDir, ".miniooni")
err := os.MkdirAll(miniooniDir, 0700)
fatalOnError(err, "cannot create $HOME/.miniooni directory")
// We cleanup the assets files used by versions of ooniprobe
// older than v3.9.0, where we started embedding the assets
// into the binary and use that directly. This cleanup doesn't
// remove the whole directory but only known files inside it
// and then the directory itself, if empty. We explicitly discard
// the return value as it does not matter to us here.
assetsDir := path.Join(miniooniDir, "assets")
_, _ = assetsdir.Cleanup(assetsDir)
log.Debugf("miniooni state directory: %s", miniooniDir)
consentFile := path.Join(miniooniDir, "informed")
fatalOnError(maybeWriteConsentFile(currentOptions.Yes, consentFile),
"cannot write informed consent file")
fatalIfFalse(canOpen(consentFile), riskOfRunningOONI)
log.Info("miniooni home directory: $HOME/.miniooni")
var proxyURL *url.URL
if currentOptions.Proxy != "" {
proxyURL = mustParseURL(currentOptions.Proxy)
}
kvstore2dir := filepath.Join(miniooniDir, "kvstore2")
kvstore, err := kvstore.NewFS(kvstore2dir)
fatalOnError(err, "cannot create kvstore2 directory")
tunnelDir := filepath.Join(miniooniDir, "tunnel")
err = os.MkdirAll(tunnelDir, 0700)
fatalOnError(err, "cannot create tunnelDir")
config := engine.SessionConfig{
KVStore: kvstore,
Logger: logger,
ProxyURL: proxyURL,
SoftwareName: softwareName,
SoftwareVersion: softwareVersion,
TorArgs: currentOptions.TorArgs,
TorBinary: currentOptions.TorBinary,
TunnelDir: tunnelDir,
}
if currentOptions.ProbeServicesURL != "" {
config.AvailableProbeServices = []model.OOAPIService{{
Address: currentOptions.ProbeServicesURL,
Type: "https",
}}
}
sess, err := engine.NewSession(ctx, config)
fatalOnError(err, "cannot create measurement session")
defer func() {
sess.Close()
log.Infof("whole session: recv %s, sent %s",
humanize.SI(sess.KibiBytesReceived()*1024, "byte"),
humanize.SI(sess.KibiBytesSent()*1024, "byte"),
)
}()
log.Debugf("miniooni temporary directory: %s", sess.TempDir())
log.Info("Looking up OONI backends; please be patient...")
err = sess.MaybeLookupBackends()
fatalOnError(err, "cannot lookup OONI backends")
log.Info("Looking up your location; please be patient...")
err = sess.MaybeLookupLocation()
fatalOnError(err, "cannot lookup your location")
log.Debugf("- IP: %s", sess.ProbeIP())
log.Infof("- country: %s", sess.ProbeCC())
log.Infof("- network: %s (%s)", sess.ProbeNetworkName(), sess.ProbeASNString())
log.Infof("- resolver's IP: %s", sess.ResolverIP())
log.Infof("- resolver's network: %s (%s)", sess.ResolverNetworkName(),
sess.ResolverASNString())
builder, err := sess.NewExperimentBuilder(experimentName)
fatalOnError(err, "cannot create experiment builder")
inputLoader := &engine.InputLoader{
CheckInConfig: &model.OOAPICheckInConfig{
RunType: model.RunTypeManual,
OnWiFi: true, // meaning: not on 4G
Charging: true,
},
ExperimentName: experimentName,
InputPolicy: builder.InputPolicy(),
StaticInputs: currentOptions.Inputs,
SourceFiles: currentOptions.InputFilePaths,
Session: sess,
}
inputs, err := inputLoader.Load(context.Background())
fatalOnError(err, "cannot load inputs")
if currentOptions.Random {
rnd := rand.New(rand.NewSource(time.Now().UnixNano()))
rnd.Shuffle(len(inputs), func(i, j int) {
inputs[i], inputs[j] = inputs[j], inputs[i]
})
}
err = builder.SetOptionsAny(extraOptions)
fatalOnError(err, "cannot parse extraOptions")
experiment := builder.NewExperiment()
defer func() {
log.Infof("experiment: recv %s, sent %s",
humanize.SI(experiment.KibiBytesReceived()*1024, "byte"),
humanize.SI(experiment.KibiBytesSent()*1024, "byte"),
)
}()
submitter, err := engine.NewSubmitter(ctx, engine.SubmitterConfig{
Enabled: !currentOptions.NoCollector,
Session: sess,
Logger: log.Log,
})
fatalOnError(err, "cannot create submitter")
saver, err := engine.NewSaver(engine.SaverConfig{
Enabled: !currentOptions.NoJSON,
Experiment: experiment,
FilePath: currentOptions.ReportFile,
Logger: log.Log,
})
fatalOnError(err, "cannot create saver")
inputProcessor := &engine.InputProcessor{
Annotations: annotations,
Experiment: &experimentWrapper{
child: engine.NewInputProcessorExperimentWrapper(experiment),
total: len(inputs),
},
Inputs: inputs,
MaxRuntime: time.Duration(currentOptions.MaxRuntime) * time.Second,
Options: currentOptions.ExtraOptions,
Saver: engine.NewInputProcessorSaverWrapper(saver),
Submitter: submitterWrapper{
child: engine.NewInputProcessorSubmitterWrapper(submitter),
},
}
err = inputProcessor.Run(ctx)
fatalOnError(err, "inputProcessor.Run failed")
}
type experimentWrapper struct {
child engine.InputProcessorExperimentWrapper
total int
}
func (ew *experimentWrapper) MeasureAsync(
ctx context.Context, input string, idx int) (<-chan *model.Measurement, error) {
if input != "" {
log.Infof("[%d/%d] running with input: %s", idx+1, ew.total, input)
}
return ew.child.MeasureAsync(ctx, input, idx)
}
type submitterWrapper struct {
child engine.InputProcessorSubmitterWrapper
}
func (sw submitterWrapper) Submit(ctx context.Context, idx int, m *model.Measurement) error {
err := sw.child.Submit(ctx, idx, m)
warnOnError(err, "submitting measurement failed")
// policy: we do not stop the loop if measurement submission fails
return nil
}