131 lines
3.9 KiB
Go
131 lines
3.9 KiB
Go
package server
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import (
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"fmt"
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"io"
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"os"
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"path"
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"path/filepath"
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"strings"
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"text/template"
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"github.com/valyala/fasthttp"
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"github.com/authelia/authelia/v4/internal/logging"
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"github.com/authelia/authelia/v4/internal/middlewares"
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"github.com/authelia/authelia/v4/internal/utils"
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)
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// ServeTemplatedFile serves a templated version of a specified file,
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// this is utilised to pass information between the backend and frontend
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// and generate a nonce to support a restrictive CSP while using material-ui.
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func ServeTemplatedFile(publicDir, file, assetPath, duoSelfEnrollment, rememberMe, resetPassword, resetPasswordCustomURL, session, theme string, https bool) middlewares.RequestHandler {
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logger := logging.Logger()
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a, err := assets.Open(path.Join(publicDir, file))
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if err != nil {
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logger.Fatalf("Unable to open %s: %s", file, err)
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}
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b, err := io.ReadAll(a)
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if err != nil {
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logger.Fatalf("Unable to read %s: %s", file, err)
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}
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tmpl, err := template.New("file").Parse(string(b))
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if err != nil {
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logger.Fatalf("Unable to parse %s template: %s", file, err)
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}
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return func(ctx *middlewares.AutheliaCtx) {
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base := ""
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if baseURL := ctx.UserValueBytes(middlewares.UserValueKeyBaseURL); baseURL != nil {
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base = baseURL.(string)
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}
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logoOverride := f
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if assetPath != "" {
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if _, err := os.Stat(filepath.Join(assetPath, fileLogo)); err == nil {
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logoOverride = t
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}
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}
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var scheme = schemeHTTPS
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if !https {
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proto := string(ctx.XForwardedProto())
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switch proto {
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case "":
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break
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case schemeHTTP, schemeHTTPS:
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scheme = proto
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}
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}
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baseURL := scheme + "://" + string(ctx.XForwardedHost()) + base + "/"
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nonce := utils.RandomString(32, utils.AlphaNumericCharacters, true)
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switch extension := filepath.Ext(file); extension {
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case ".html":
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ctx.SetContentType("text/html; charset=utf-8")
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default:
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ctx.SetContentType("text/plain; charset=utf-8")
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}
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switch {
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case publicDir == assetsSwagger:
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ctx.Response.Header.Add(fasthttp.HeaderContentSecurityPolicy, fmt.Sprintf("base-uri 'self'; default-src 'self'; img-src 'self' https://validator.swagger.io data:; object-src 'none'; script-src 'self' 'unsafe-inline' 'nonce-%s'; style-src 'self' 'nonce-%s'", nonce, nonce))
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case ctx.Configuration.Server.Headers.CSPTemplate != "":
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ctx.Response.Header.Add(fasthttp.HeaderContentSecurityPolicy, strings.ReplaceAll(ctx.Configuration.Server.Headers.CSPTemplate, cspNoncePlaceholder, nonce))
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case os.Getenv("ENVIRONMENT") == dev:
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ctx.Response.Header.Add(fasthttp.HeaderContentSecurityPolicy, fmt.Sprintf(cspDefaultTemplate, " 'unsafe-eval'", nonce))
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default:
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ctx.Response.Header.Add(fasthttp.HeaderContentSecurityPolicy, fmt.Sprintf(cspDefaultTemplate, "", nonce))
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}
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err := tmpl.Execute(ctx.Response.BodyWriter(), struct{ Base, BaseURL, CSPNonce, DuoSelfEnrollment, LogoOverride, RememberMe, ResetPassword, ResetPasswordCustomURL, Session, Theme string }{Base: base, BaseURL: baseURL, CSPNonce: nonce, DuoSelfEnrollment: duoSelfEnrollment, LogoOverride: logoOverride, RememberMe: rememberMe, ResetPassword: resetPassword, ResetPasswordCustomURL: resetPasswordCustomURL, Session: session, Theme: theme})
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if err != nil {
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ctx.RequestCtx.Error("an error occurred", 503)
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logger.Errorf("Unable to execute template: %v", err)
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return
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}
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}
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}
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func writeHealthCheckEnv(disabled bool, scheme, host, path string, port int) (err error) {
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if disabled {
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return nil
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}
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_, err = os.Stat("/app/healthcheck.sh")
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if err != nil {
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return nil
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}
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_, err = os.Stat("/app/.healthcheck.env")
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if err != nil {
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return nil
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}
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file, err := os.OpenFile("/app/.healthcheck.env", os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755)
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if err != nil {
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return err
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}
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defer func() {
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_ = file.Close()
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}()
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if host == "0.0.0.0" {
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host = localhost
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} else if strings.Contains(host, ":") {
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host = "[" + host + "]"
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}
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_, err = file.WriteString(fmt.Sprintf(healthCheckEnv, scheme, host, port, path))
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return err
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}
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