(originUrl string)
| 78 | } |
| 79 | |
| 80 | func validateUrlString(originUrl string) (string, error) { |
| 81 | if originUrl == "" { |
| 82 | return "", fmt.Errorf("URL should not be empty") |
| 83 | } |
| 84 | |
| 85 | if net.ParseIP(originUrl) != nil { |
| 86 | return validateIP("", originUrl, "") |
| 87 | } else if strings.HasPrefix(originUrl, "[") && strings.HasSuffix(originUrl, "]") { |
| 88 | // ParseIP doesn't recoginze [::1] |
| 89 | return validateIP("", originUrl[1:len(originUrl)-1], "") |
| 90 | } |
| 91 | |
| 92 | host, port, err := net.SplitHostPort(originUrl) |
| 93 | // user might pass in an ip address like 127.0.0.1 |
| 94 | if err == nil && net.ParseIP(host) != nil { |
| 95 | return validateIP("", host, port) |
| 96 | } |
| 97 | |
| 98 | unescapedUrl, err := url.PathUnescape(originUrl) |
| 99 | if err != nil { |
| 100 | return "", fmt.Errorf("URL %s has invalid escape characters %s", originUrl, unescapedUrl) |
| 101 | } |
| 102 | |
| 103 | parsedUrl, err := url.Parse(unescapedUrl) |
| 104 | if err != nil { |
| 105 | return "", fmt.Errorf("URL %s has invalid format", originUrl) |
| 106 | } |
| 107 | |
| 108 | // if the url is in the form of host:port, IsAbs() will think host is the schema |
| 109 | var hostname string |
| 110 | hasScheme := parsedUrl.IsAbs() && parsedUrl.Host != "" |
| 111 | if hasScheme { |
| 112 | err := validateScheme(parsedUrl.Scheme) |
| 113 | if err != nil { |
| 114 | return "", err |
| 115 | } |
| 116 | // The earlier check for ip address will miss the case http://[::1] |
| 117 | // and http://[::1]:8080 |
| 118 | if net.ParseIP(parsedUrl.Hostname()) != nil { |
| 119 | return validateIP(parsedUrl.Scheme, parsedUrl.Hostname(), parsedUrl.Port()) |
| 120 | } |
| 121 | hostname, err = ValidateHostname(parsedUrl.Hostname()) |
| 122 | if err != nil { |
| 123 | return "", fmt.Errorf("URL %s has invalid format", originUrl) |
| 124 | } |
| 125 | if parsedUrl.Port() != "" { |
| 126 | return fmt.Sprintf("%s://%s", parsedUrl.Scheme, net.JoinHostPort(hostname, parsedUrl.Port())), nil |
| 127 | } |
| 128 | return fmt.Sprintf("%s://%s", parsedUrl.Scheme, hostname), nil |
| 129 | } else { |
| 130 | if host == "" { |
| 131 | hostname, err = ValidateHostname(originUrl) |
| 132 | if err != nil { |
| 133 | return "", fmt.Errorf("URL no %s has invalid format", originUrl) |
| 134 | } |
| 135 | return fmt.Sprintf("%s://%s", defaultScheme, hostname), nil |
| 136 | } else { |
| 137 | hostname, err = ValidateHostname(host) |
no test coverage detected