add ipa support, part

ipa.go

@@ -0,0 +1,133 @@
+package main
+
+import (
+	"archive/zip"
+	"bytes"
+	"errors"
+	"io"
+	"io/ioutil"
+	"path/filepath"
+	"regexp"
+
+	goplist "github.com/DHowett/go-plist"
+)
+
+type plistBundle struct {
+	CFBundleIdentifier  string `plist:"CFBundleIdentifier"`
+	CFBundleVersion     string `plist:"CFBundleVersion"`
+	CFBundleDisplayName string `plist:"CFBundleDisplayName"`
+	CFBundleIconFile    string `plist:"CFBundleIconFile"`
+}
+
+func parseIpaIcon(path string) (data []byte, err error) {
+	iconPattern := regexp.MustCompile(`(?i)^Payload/[^/]*/icon\.png$`)
+	r, err := zip.OpenReader(path)
+	if err != nil {
+		return
+	}
+	defer r.Close()
+
+	var zfile *zip.File
+	for _, file := range r.File {
+		if iconPattern.MatchString(file.Name) {
+			zfile = file
+			break
+		}
+	}
+	if zfile == nil {
+		err = errors.New("icon.png file not found")
+		return
+	}
+	plreader, err := zfile.Open()
+	if err != nil {
+		return
+	}
+	defer plreader.Close()
+	return ioutil.ReadAll(plreader)
+}
+
+func parseIPA(path string) (plinfo *plistBundle, err error) {
+	plistre := regexp.MustCompile(`^Payload/[^/]*/Info\.plist$`)
+	r, err := zip.OpenReader(path)
+	if err != nil {
+		return
+	}
+	defer r.Close()
+
+	var plfile *zip.File
+	for _, file := range r.File {
+		if plistre.MatchString(file.Name) {
+			plfile = file
+			break
+		}
+	}
+	if plfile == nil {
+		err = errors.New("Info.plist file not found")
+		return
+	}
+	plreader, err := plfile.Open()
+	if err != nil {
+		return
+	}
+	defer plreader.Close()
+	buf := make([]byte, plfile.FileInfo().Size())
+	_, err = io.ReadFull(plreader, buf)
+	if err != nil {
+		return
+	}
+	dec := goplist.NewDecoder(bytes.NewReader(buf))
+	plinfo = new(plistBundle)
+	err = dec.Decode(plinfo)
+	return
+}
+
+// ref: https://gist.github.com/frischmilch/b15d81eabb67925642bd#file_manifest.plist
+type plAsset struct {
+	Kind string `plist:"kind"`
+	URL  string `plist:"url"`
+}
+
+type plItem struct {
+	Assets   []*plAsset `plist:"assets"`
+	Metadata struct {
+		BundleIdentifier string `plist:"bundle-identifier"`
+		BundleVersion    string `plist:"bundle-version"`
+		Kind             string `plist:"kind"`
+		Title            string `plist:"title"`
+	} `plist:"metadata"`
+}
+
+type downloadPlist struct {
+	Items []*plItem `plist:"items"`
+}
+
+func generateDownloadPlist(ipaUrl, imgUrl string, plinfo *plistBundle) ([]byte, error) {
+	dp := new(downloadPlist)
+	item := new(plItem)
+	item.Assets = append(item.Assets, &plAsset{
+		Kind: "software-package",
+		URL:  ipaUrl,
+	})
+
+	// FIXME(ssx): find icon from CFBundleIconFile
+	_ = imgUrl
+	// , &plAsset{
+	// 	Kind: "display-image",
+	// 	URL:  imgUrl,
+	// })
+
+	item.Metadata.Kind = "software"
+
+	item.Metadata.BundleIdentifier = plinfo.CFBundleIdentifier
+	item.Metadata.BundleVersion = plinfo.CFBundleVersion
+	item.Metadata.Title = plinfo.CFBundleDisplayName
+	if item.Metadata.Title == "" {
+		item.Metadata.Title = filepath.Base(ipaUrl)
+	}
+
+	dp.Items = append(dp.Items, item)
+	data, err := goplist.MarshalIndent(dp, goplist.XMLFormat, "    ")
+	// fmt.Println(string(data))
+	// fmt.Println(err)
+	return data, err
+}