Big rearrange: resolve URL to filesystem earlier, so we can check for .molly files ASAP, so that they can handle redirects, certificate zones, etc.
This commit is contained in:
Solderpunk
parent
990b7071d0
commit
e43fc7877c
72
handler.go
72
handler.go
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@ -74,6 +74,14 @@ func handleGeminiRequest(conn net.Conn, config Config, accessLogEntries chan Log
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return
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}
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// Resolve URI path to actual filesystem path
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path := resolvePath(URL.Path, config)
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// Read Molly files
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if config.ReadMollyFiles {
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parseMollyFiles(path, &config, errorLogEntries)
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}
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// Check for redirects
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for src, dst := range config.TempRedirects {
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if URL.Path == src {
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@ -120,6 +128,22 @@ func handleGeminiRequest(conn net.Conn, config Config, accessLogEntries chan Log
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return
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}
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// Check whether this URL is in a configured CGI path
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for _, cgiPath := range config.CGIPaths {
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inCGIPath, err := regexp.Match(cgiPath, []byte(path))
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if err != nil || !inCGIPath {
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continue
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}
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info, err := os.Stat(path)
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if err != nil {
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continue
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}
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if info.Mode().Perm()&0111 == 0111 {
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handleCGI(config, path, URL, &log, errorLogEntries, conn)
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return
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}
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}
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// Check whether this URL is mapped to an SCGI app
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for scgi_url, scgi_socket := range config.SCGIPaths {
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matched, err := regexp.Match(scgi_url, []byte(URL.Path))
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@ -129,10 +153,8 @@ func handleGeminiRequest(conn net.Conn, config Config, accessLogEntries chan Log
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}
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}
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// Resolve URI path to actual filesystem path
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path, info, err := resolvePath(URL.Path, config)
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// Fail if file does not exist or perms aren't right
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info, err := os.Stat(path)
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if os.IsNotExist(err) || os.IsPermission(err) {
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conn.Write([]byte("51 Not found!\r\n"))
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log.Status = 51
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@ -162,11 +184,6 @@ func handleGeminiRequest(conn net.Conn, config Config, accessLogEntries chan Log
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return
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}
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// Read Molly files
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if config.ReadMollyFiles {
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parseMollyFiles(path, info, &config, errorLogEntries)
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}
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// Handle directories
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if info.IsDir() {
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// Redirect to add trailing slash if missing
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@ -190,17 +207,6 @@ func handleGeminiRequest(conn net.Conn, config Config, accessLogEntries chan Log
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return
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}
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// If this file is executable, get dynamic content
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if info.Mode().Perm()&0111 == 0111 {
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for _, cgiPath := range config.CGIPaths {
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inCGIPath, err := regexp.Match(cgiPath, []byte(path))
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if err == nil && inCGIPath {
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handleCGI(config, path, URL, &log, errorLogEntries, conn)
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return
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}
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}
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}
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// Otherwise, serve the file contents
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serveFile(path, &log, conn, config, errorLogEntries)
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return
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@ -239,7 +245,7 @@ func readRequest(conn net.Conn, log *LogEntry, errorLog chan string) (*url.URL,
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return URL, nil
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}
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func resolvePath(path string, config Config) (string, os.FileInfo, error) {
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func resolvePath(path string, config Config) string {
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// Handle tildes
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if strings.HasPrefix(path, "/~") {
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bits := strings.Split(path, "/")
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@ -250,20 +256,12 @@ func resolvePath(path string, config Config) (string, os.FileInfo, error) {
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} else {
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path = filepath.Join(config.DocBase, path)
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}
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// Make sure this file exists and is readable
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info, err := os.Stat(path)
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if err != nil {
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return "", nil, err
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}
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return path, info, nil
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return path
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}
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func parseMollyFiles(path string, info os.FileInfo, config *Config, errorLogEntries chan string) {
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func parseMollyFiles(path string, config *Config, errorLogEntries chan string) {
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// Build list of directories to check
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dirs := make([]string, 16)
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if !info.IsDir() {
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path = filepath.Dir(path)
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}
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var dirs []string
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dirs = append(dirs, path)
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for {
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if path == filepath.Clean(config.DocBase) {
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@ -280,14 +278,22 @@ func parseMollyFiles(path string, info os.FileInfo, config *Config, errorLogEntr
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mollyFile.DirectorySort = config.DirectorySort
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mollyFile.DirectoryReverse = config.DirectoryReverse
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mollyFile.DirectoryTitles = config.DirectoryTitles
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// Parse files
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// Parse files in reverse order
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for i := len(dirs) - 1; i >= 0; i-- {
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dir := dirs[i]
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fmt.Println("Considering " + dir)
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// Break out of the loop if a directory doesn't exist
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_, err := os.Stat(dir)
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if os.IsNotExist(err) {
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break
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}
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// Construct path for a .molly file in this dir
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mollyPath := filepath.Join(dir, ".molly")
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_, err := os.Stat(mollyPath)
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_, err = os.Stat(mollyPath)
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if err != nil {
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continue
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}
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// If the file exists and we can read it, try to parse it
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_, err = toml.DecodeFile(mollyPath, &mollyFile)
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if err != nil {
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errorLogEntries <- "Error parsing .molly file " + mollyPath + ": " + err.Error()
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