/// <summary>
/// Gets the V3 service index HTTPS URL from the nuget-v3-service-index-url attribute.
/// </summary>
/// <param name="signedAttributes">A <see cref="SignerInfo" /> signed attributes collection.</param>
/// <returns>The V3 service index HTTPS URL.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="signedAttributes" />
/// is <c>null</c>.</exception>
/// <exception cref="SignatureException">Thrown if either exactly one attribute is not present or if
/// the attribute does not contain exactly one attribute value.</exception>
public static Uri GetNuGetV3ServiceIndexUrl(CryptographicAttributeObjectCollection signedAttributes)
{
if (signedAttributes == null)
{
throw new ArgumentNullException(nameof(signedAttributes));
}
const string attributeName = "nuget-v3-service-index-url";
var attribute = signedAttributes.GetAttribute(Oids.NuGetV3ServiceIndexUrl);
if (attribute == null)
{
throw new SignatureException(
string.Format(
CultureInfo.CurrentCulture,
Strings.ExactlyOneAttributeRequired,
attributeName));
}
if (attribute.Values.Count != 1)
{
throw new SignatureException(
string.Format(
CultureInfo.CurrentCulture,
Strings.ExactlyOneAttributeValueRequired,
attributeName));
}
var nugetV3ServiceIndexUrl = NuGetV3ServiceIndexUrl.Read(attribute.Values[0].RawData);
return(nugetV3ServiceIndexUrl.V3ServiceIndexUrl);
}
/// <summary>
/// Creates a nuget-v3-service-index-url attribute.
/// </summary>
/// <param name="v3ServiceIndexUrl">The V3 service index HTTPS URL.</param>
/// <returns>An attribute object.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="v3ServiceIndexUrl" /> is null.</exception>
/// <exception cref="ArgumentException">Thrown if <paramref name="v3ServiceIndexUrl" /> is neither absolute
/// nor HTTPS.</exception>
public static CryptographicAttributeObject CreateNuGetV3ServiceIndexUrl(Uri v3ServiceIndexUrl)
{
if (v3ServiceIndexUrl == null)
{
throw new ArgumentNullException(nameof(v3ServiceIndexUrl));
}
if (!v3ServiceIndexUrl.IsAbsoluteUri)
{
throw new ArgumentException(Strings.InvalidUrl, nameof(v3ServiceIndexUrl));
}
if (!string.Equals(v3ServiceIndexUrl.Scheme, "https", StringComparison.Ordinal))
{
throw new ArgumentException(Strings.InvalidUrl, nameof(v3ServiceIndexUrl));
}
var nugetV3ServiceIndexUrl = new NuGetV3ServiceIndexUrl(v3ServiceIndexUrl);
var bytes = nugetV3ServiceIndexUrl.Encode();
return(new CryptographicAttributeObject(
new Oid(Oids.NuGetV3ServiceIndexUrl),
new AsnEncodedDataCollection(new AsnEncodedData(Oids.NuGetV3ServiceIndexUrl, bytes))));
}
