Function splitCgiPath

cgi.go:198–233

splitCgiPath splits the request path into SCRIPT_NAME, SCRIPT_FILENAME, PATH_INFO, DOCUMENT_URI

(fc *frankenPHPContext)

// splitCgiPath splits the request path into SCRIPT_NAME, SCRIPT_FILENAME, PATH_INFO, DOCUMENT_URI
func splitCgiPath(fc *frankenPHPContext) {
	path := fc.request.URL.Path
	splitPath := fc.splitPath

	if splitPath == nil {
		splitPath = []string{".php"}
	}

	if splitPos := splitPos(path, splitPath); splitPos > -1 {
		fc.docURI = path[:splitPos]
		fc.pathInfo = path[splitPos:]
	}

	// If a worker is already assigned explicitly, derive SCRIPT_NAME from its filename
	if fc.worker != nil {
		fc.scriptFilename = fc.worker.fileName
		docRootWithSep := fc.documentRoot + string(filepath.Separator)
		if strings.HasPrefix(fc.worker.fileName, docRootWithSep) {
			fc.scriptName = filepath.ToSlash(strings.TrimPrefix(fc.worker.fileName, fc.documentRoot))
		} else {
			fc.docURI = ""
			fc.pathInfo = ""
		}
		return
	}

	// Strip PATH_INFO from SCRIPT_NAME
	// Ensure the SCRIPT_NAME has a leading slash for compliance with RFC3875
	// Info: https://tools.ietf.org/html/rfc3875#section-4.1.13
	fc.scriptName = ensureLeadingSlash(strings.TrimSuffix(path, fc.pathInfo))

	// TODO: is it possible to delay this and avoid saving everything in the context?
	// SCRIPT_FILENAME is the absolute path of SCRIPT_NAME
	fc.scriptFilename = sanitizedPathJoin(fc.documentRoot, fc.scriptName)
	fc.worker = workersByPath[fc.scriptFilename]
}

// splitPos returns the index where path should be split based on splitPath.
// example: if splitPath is [".php"]