95 lines
2.3 KiB
Go
95 lines
2.3 KiB
Go
//go:build windows && !native_webview2loader
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package webviewloader
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import (
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"path/filepath"
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"golang.org/x/sys/windows/registry"
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)
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const (
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kNumChannels = 4
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kInstallKeyPath = "Software\\Microsoft\\EdgeUpdate\\ClientState\\"
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kMinimumCompatibleVersion = "86.0.616.0"
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)
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var (
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kChannelName = [kNumChannels]string{
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"", "beta", "dev", "canary", // "internal"
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}
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kChannelUuid = [kNumChannels]string{
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"{F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}",
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"{2CD8A007-E189-409D-A2C8-9AF4EF3C72AA}",
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"{0D50BFEC-CD6A-4F9A-964C-C7416E3ACB10}",
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"{65C35B14-6C1D-4122-AC46-7148CC9D6497}",
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//"{BE59E8FD-089A-411B-A3B0-051D9E417818}",
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}
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minimumCompatibleVersion, _ = parseVersion(kMinimumCompatibleVersion)
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)
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func findInstalledClientDll(preferCanary bool) (clientPath string, version *version, err error) {
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for i := 0; i < kNumChannels; i++ {
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channel := i
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if preferCanary {
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channel = (kNumChannels - 1) - i
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}
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key := kInstallKeyPath + kChannelUuid[channel]
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for _, checkSystem := range []bool{true, false} {
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clientPath, version, err := findInstalledClientDllForChannel(key, checkSystem)
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if err == errNoClientDLLFound {
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continue
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}
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if err != nil {
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return "", nil, err
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}
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version.channel = kChannelName[channel]
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return clientPath, version, nil
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}
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}
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return "", nil, errNoClientDLLFound
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}
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func findInstalledClientDllForChannel(subKey string, system bool) (clientPath string, clientVersion *version, err error) {
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key := registry.LOCAL_MACHINE
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if !system {
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key = registry.CURRENT_USER
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}
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regKey, err := registry.OpenKey(key, subKey, registry.READ|registry.WOW64_32KEY)
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if err != nil {
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return "", nil, mapFindErr(err)
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}
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defer regKey.Close()
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embeddedEdgeSubFolder, _, err := regKey.GetStringValue("EBWebView")
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if err != nil {
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return "", nil, mapFindErr(err)
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}
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if embeddedEdgeSubFolder == "" {
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return "", nil, errNoClientDLLFound
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}
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versionString := filepath.Base(embeddedEdgeSubFolder)
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version, err := parseVersion(versionString)
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if err != nil {
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return "", nil, errNoClientDLLFound
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}
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if version.compare(minimumCompatibleVersion) < 0 {
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return "", nil, errNoClientDLLFound
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}
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dllPath, err := findEmbeddedClientDll(embeddedEdgeSubFolder)
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if err != nil {
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return "", nil, mapFindErr(err)
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}
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return dllPath, &version, nil
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}
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