109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
package resolver
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import (
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"embed"
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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"github.com/FAU-CDI/wdresolve"
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"github.com/FAU-CDI/wdresolve/resolvers"
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"github.com/FAU-CDI/wisski-distillery/component"
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"github.com/FAU-CDI/wisski-distillery/core"
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"github.com/tkw1536/goprogram/stream"
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)
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// TODO: Add a 'self-server' concept!
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type Resolver struct {
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component.ComponentBase
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ConfigName string // the name to the config file
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Executable string // path to the current executable
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}
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func (Resolver) Name() string {
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return "resolver"
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}
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func (resolver Resolver) ConfigPath() string {
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return filepath.Join(resolver.Dir, resolver.ConfigName)
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}
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//go:embed all:stack resolver.env
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var resources embed.FS
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func (resolver Resolver) Stack() component.Installable {
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return resolver.ComponentBase.MakeStack(component.Installable{
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Resources: resources,
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ContextPath: "stack",
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EnvPath: "resolver.env",
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EnvContext: map[string]string{
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"VIRTUAL_HOST": resolver.Config.DefaultHost(),
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"LETSENCRYPT_HOST": resolver.Config.DefaultSSLHost(),
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"LETSENCRYPT_EMAIL": resolver.Config.CertbotEmail,
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"CONFIG_PATH": resolver.Config.ConfigPath,
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"DEPLOY_ROOT": resolver.Config.DeployRoot,
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"GLOBAL_AUTHORIZED_KEYS_FILE": resolver.Config.GlobalAuthorizedKeysFile,
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"SELF_OVERRIDES_FILE": resolver.Config.SelfOverridesFile,
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"RESOLVER_CONFIG": resolver.ConfigPath(),
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},
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TouchFiles: []string{resolver.ConfigName},
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CopyContextFiles: []string{core.Executable},
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})
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}
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func (resolver Resolver) Context(parent component.InstallationContext) component.InstallationContext {
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return component.InstallationContext{
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core.Executable: resolver.Executable,
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}
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}
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func (resolver Resolver) Server(io stream.IOStream) (p wdresolve.ResolveHandler, err error) {
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p.TrustXForwardedProto = true
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fallback := &resolvers.Regexp{
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Data: map[string]string{},
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}
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// handle the default domain name!
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domainName := resolver.Config.DefaultDomain
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if domainName != "" {
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fallback.Data[fmt.Sprintf("^https?://(.*)\\.%s", regexp.QuoteMeta(domainName))] = fmt.Sprintf("https://$1.%s", domainName)
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io.Printf("registering default domain %s\n", domainName)
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}
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// handle the extra domains!
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for _, domain := range resolver.Config.SelfExtraDomains {
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fallback.Data[fmt.Sprintf("^https?://(.*)\\.%s", regexp.QuoteMeta(domain))] = fmt.Sprintf("https://$1.%s", domainName)
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io.Printf("registering legacy domain %s\n", domain)
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}
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// open the prefix file
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prefixFile := resolver.ConfigPath()
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fs, err := os.Open(prefixFile)
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io.Println("loading prefixes from ", prefixFile)
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if err != nil {
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return p, err
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}
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defer fs.Close()
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// read the prefixes
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// TODO: Do we want to load these without a file?
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prefixes, err := resolvers.ReadPrefixes(fs)
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if err != nil {
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return p, err
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}
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// and use that as the resolver!
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p.Resolver = resolvers.InOrder{
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prefixes,
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fallback,
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}
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return p, nil
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}
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