1 files changed, 134 insertions, 0 deletions
diff --git a/misc/ios/detect.go b/misc/ios/detect.go
new file mode 100644
index 0000000..1cb8ae5
--- /dev/null
+++ b/misc/ios/detect.go
@@ -0,0 +1,134 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build ignore
+// +build ignore
+
+// detect attempts to autodetect the correct
+// values of the environment variables
+// used by go_ios_exec.
+// detect shells out to ideviceinfo, a third party program that can
+// be obtained by following the instructions at
+// https://github.com/libimobiledevice/libimobiledevice.
+package main
+
+import (
+	"bytes"
+	"crypto/x509"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func main() {
+	udids := getLines(exec.Command("idevice_id", "-l"))
+	if len(udids) == 0 {
+		fail("no udid found; is a device connected?")
+	}
+
+	mps := detectMobileProvisionFiles(udids)
+	if len(mps) == 0 {
+		fail("did not find mobile provision matching device udids %q", udids)
+	}
+
+	fmt.Println("# Available provisioning profiles below.")
+	fmt.Println("# NOTE: Any existing app on the device with the app id specified by GOIOS_APP_ID")
+	fmt.Println("# will be overwritten when running Go programs.")
+	for _, mp := range mps {
+		fmt.Println()
+		f, err := os.CreateTemp("", "go_ios_detect_")
+		check(err)
+		fname := f.Name()
+		defer os.Remove(fname)
+
+		out := output(parseMobileProvision(mp))
+		_, err = f.Write(out)
+		check(err)
+		check(f.Close())
+
+		cert, err := plistExtract(fname, "DeveloperCertificates:0")
+		check(err)
+		pcert, err := x509.ParseCertificate(cert)
+		check(err)
+		fmt.Printf("export GOIOS_DEV_ID=\"%s\"\n", pcert.Subject.CommonName)
+
+		appID, err := plistExtract(fname, "Entitlements:application-identifier")
+		check(err)
+		fmt.Printf("export GOIOS_APP_ID=%s\n", appID)
+
+		teamID, err := plistExtract(fname, "Entitlements:com.apple.developer.team-identifier")
+		check(err)
+		fmt.Printf("export GOIOS_TEAM_ID=%s\n", teamID)
+	}
+}
+
+func detectMobileProvisionFiles(udids [][]byte) []string {
+	cmd := exec.Command("mdfind", "-name", ".mobileprovision")
+	lines := getLines(cmd)
+
+	var files []string
+	for _, line := range lines {
+		if len(line) == 0 {
+			continue
+		}
+		xmlLines := getLines(parseMobileProvision(string(line)))
+		matches := 0
+		for _, udid := range udids {
+			for _, xmlLine := range xmlLines {
+				if bytes.Contains(xmlLine, udid) {
+					matches++
+				}
+			}
+		}
+		if matches == len(udids) {
+			files = append(files, string(line))
+		}
+	}
+	return files
+}
+
+func parseMobileProvision(fname string) *exec.Cmd {
+	return exec.Command("security", "cms", "-D", "-i", string(fname))
+}
+
+func plistExtract(fname string, path string) ([]byte, error) {
+	out, err := exec.Command("/usr/libexec/PlistBuddy", "-c", "Print "+path, fname).CombinedOutput()
+	if err != nil {
+		return nil, err
+	}
+	return bytes.TrimSpace(out), nil
+}
+
+func getLines(cmd *exec.Cmd) [][]byte {
+	out := output(cmd)
+	lines := bytes.Split(out, []byte("\n"))
+	// Skip the empty line at the end.
+	if len(lines[len(lines)-1]) == 0 {
+		lines = lines[:len(lines)-1]
+	}
+	return lines
+}
+
+func output(cmd *exec.Cmd) []byte {
+	out, err := cmd.Output()
+	if err != nil {
+		fmt.Println(strings.Join(cmd.Args, "\n"))
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	return out
+}
+
+func check(err error) {
+	if err != nil {
+		fail(err.Error())
+	}
+}
+
+func fail(msg string, v ...interface{}) {
+	fmt.Fprintf(os.Stderr, msg, v...)
+	fmt.Fprintln(os.Stderr)
+	os.Exit(1)
+}