private static void ValidateBoundary(string boundary)
{
// NameValueHeaderValue is too restrictive for boundary.
// Instead validate it ourselves and then quote it.
if (string.IsNullOrWhiteSpace(boundary))
{
throw new ArgumentException(SR.net_http_argument_empty_string, nameof(boundary));
}
// RFC 2046 Section 5.1.1
// boundary := 0*69<bchars> bcharsnospace
// bchars := bcharsnospace / " "
// bcharsnospace := DIGIT / ALPHA / "'" / "(" / ")" / "+" / "_" / "," / "-" / "." / "/" / ":" / "=" / "?"
if (boundary.Length > 70)
{
throw new ArgumentOutOfRangeException(nameof(boundary), boundary,
SR.Format(System.Globalization.CultureInfo.InvariantCulture, SR.net_http_content_field_too_long, 70));
}
// Cannot end with space.
if (boundary.EndsWith(' '))
{
throw new ArgumentException(SR.Format(System.Globalization.CultureInfo.InvariantCulture, SR.net_http_headers_invalid_value, boundary), nameof(boundary));
}
const string AllowedMarks = @"'()+_,-./:=? ";
foreach (char ch in boundary)
{
if (!char.IsAsciiLetterOrDigit(ch) &&
!AllowedMarks.Contains(ch)) // Marks.
{
throw new ArgumentException(SR.Format(System.Globalization.CultureInfo.InvariantCulture, SR.net_http_headers_invalid_value, boundary), nameof(boundary));
}
}
}
private static void ValidateBoundary(string boundary)
{
// NameValueHeaderValue is too restrictive for boundary.
// Instead validate it ourselves and then quote it.
if (string.IsNullOrWhiteSpace(boundary))
{
throw new ArgumentException(SR.net_http_argument_empty_string, nameof(boundary));
}
// RFC 2046 Section 5.1.1
// boundary := 0*69<bchars> bcharsnospace
// bchars := bcharsnospace / " "
// bcharsnospace := DIGIT / ALPHA / "'" / "(" / ")" / "+" / "_" / "," / "-" / "." / "/" / ":" / "=" / "?"
if (boundary.Length > 70)
{
throw new ArgumentOutOfRangeException(nameof(boundary), boundary,
string.Format(System.Globalization.CultureInfo.InvariantCulture, SR.net_http_content_field_too_long, 70));
}
// Cannot end with space.
if (boundary.EndsWith(" ", StringComparison.Ordinal))
{
throw new ArgumentException(string.Format(System.Globalization.CultureInfo.InvariantCulture, SR.net_http_headers_invalid_value, boundary), nameof(boundary));
}
Contract.EndContractBlock();
const string AllowedMarks = @"'()+_,-./:=? ";
foreach (char ch in boundary)
{
if (('0' <= ch && ch <= '9') || // Digit.
('a' <= ch && ch <= 'z') || // alpha.
('A' <= ch && ch <= 'Z') || // ALPHA.
(AllowedMarks.IndexOf(ch) >= 0)) // Marks.
{
// Valid.
}
else
{
throw new ArgumentException(string.Format(System.Globalization.CultureInfo.InvariantCulture, SR.net_http_headers_invalid_value, boundary), nameof(boundary));
}
}
}
private static void ValidateBoundary(string boundary)
{
// NameValueHeaderValue is too restrictive for boundary.
// Instead validate it ourselves and then quote it.
Argument.AssertNotNullOrWhiteSpace(boundary, nameof(boundary));
// cspell:disable
// RFC 2046 Section 5.1.1
// boundary := 0*69<bchars> bcharsnospace
// bchars := bcharsnospace / " "
// bcharsnospace := DIGIT / ALPHA / "'" / "(" / ")" / "+" / "_" / "," / "-" / "." / "/" / ":" / "=" / "?"
// cspell:enable
if (boundary.Length > 70)
{
throw new ArgumentOutOfRangeException(nameof(boundary), boundary, $"The field cannot be longer than {70} characters.");
}
// Cannot end with space.
if (boundary.EndsWith(" ", StringComparison.InvariantCultureIgnoreCase))
{
throw new ArgumentException($"The format of value '{boundary}' is invalid.", nameof(boundary));
}
const string AllowedMarks = @"'()+_,-./:=? ";
foreach (char ch in boundary)
{
if (('0' <= ch && ch <= '9') || // Digit.
('a' <= ch && ch <= 'z') || // alpha.
('A' <= ch && ch <= 'Z') || // ALPHA.
AllowedMarks.Contains(char.ToString(ch))) // Marks.
{
// Valid.
}
else
{
throw new ArgumentException($"The format of value '{boundary}' is invalid.", nameof(boundary));
}
}
}
