Add support for Chocolatey/NuGet v2 API (#21393)

Fixes #21294

This PR adds support for NuGet v2 API.

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

Author: 3 people

docs/content/doc/packages/nuget.en-us.md

@@ -14,7 +14,7 @@ menu:
 
 # NuGet Packages Repository
 
-Publish [NuGet](https://www.nuget.org/) packages for your user or organization. The package registry supports [NuGet Symbol Packages](https://docs.microsoft.com/en-us/nuget/create-packages/symbol-packages-snupkg) too.
+Publish [NuGet](https://www.nuget.org/) packages for your user or organization. The package registry supports the V2 and V3 API protocol and you can work with [NuGet Symbol Packages](https://docs.microsoft.com/en-us/nuget/create-packages/symbol-packages-snupkg) too.
 
 **Table of Contents**
 

modules/packages/nuget/metadata.go

@@ -55,12 +55,13 @@ type Package struct {
 
 // Metadata represents the metadata of a Nuget package
 type Metadata struct {
-	Description   string                  `json:"description,omitempty"`
-	ReleaseNotes  string                  `json:"release_notes,omitempty"`
-	Authors       string                  `json:"authors,omitempty"`
-	ProjectURL    string                  `json:"project_url,omitempty"`
-	RepositoryURL string                  `json:"repository_url,omitempty"`
-	Dependencies  map[string][]Dependency `json:"dependencies,omitempty"`
+	Description              string                  `json:"description,omitempty"`
+	ReleaseNotes             string                  `json:"release_notes,omitempty"`
+	Authors                  string                  `json:"authors,omitempty"`
+	ProjectURL               string                  `json:"project_url,omitempty"`
+	RepositoryURL            string                  `json:"repository_url,omitempty"`
+	RequireLicenseAcceptance bool                    `json:"require_license_acceptance"`
+	Dependencies             map[string][]Dependency `json:"dependencies,omitempty"`
 }
 
 // Dependency represents a dependency of a Nuget package
@@ -155,12 +156,13 @@ func ParseNuspecMetaData(r io.Reader) (*Package, error) {
 	}
 
 	m := &Metadata{
-		Description:   p.Metadata.Description,
-		ReleaseNotes:  p.Metadata.ReleaseNotes,
-		Authors:       p.Metadata.Authors,
-		ProjectURL:    p.Metadata.ProjectURL,
-		RepositoryURL: p.Metadata.Repository.URL,
-		Dependencies:  make(map[string][]Dependency),
+		Description:              p.Metadata.Description,
+		ReleaseNotes:             p.Metadata.ReleaseNotes,
+		Authors:                  p.Metadata.Authors,
+		ProjectURL:               p.Metadata.ProjectURL,
+		RepositoryURL:            p.Metadata.Repository.URL,
+		RequireLicenseAcceptance: p.Metadata.RequireLicenseAcceptance,
+		Dependencies:             make(map[string][]Dependency),
 	}
 
 	for _, group := range p.Metadata.Dependencies.Group {

routers/api/packages/api.go

@@ -180,15 +180,19 @@ func Routes(ctx gocontext.Context) *web.Route {
 			r.Get("/*", maven.DownloadPackageFile)
 		}, reqPackageAccess(perm.AccessModeRead))
 		r.Group("/nuget", func() {
-			r.Get("/index.json", nuget.ServiceIndex) // Needs to be unauthenticated for the NuGet client.
+			r.Group("", func() { // Needs to be unauthenticated for the NuGet client.
+				r.Get("/", nuget.ServiceIndexV2)
+				r.Get("/index.json", nuget.ServiceIndexV3)
+				r.Get("/$metadata", nuget.FeedCapabilityResource)
+			})
 			r.Group("", func() {
-				r.Get("/query", nuget.SearchService)
+				r.Get("/query", nuget.SearchServiceV3)
 				r.Group("/registration/{id}", func() {
 					r.Get("/index.json", nuget.RegistrationIndex)
-					r.Get("/{version}", nuget.RegistrationLeaf)
+					r.Get("/{version}", nuget.RegistrationLeafV3)
 				})
 				r.Group("/package/{id}", func() {
-					r.Get("/index.json", nuget.EnumeratePackageVersions)
+					r.Get("/index.json", nuget.EnumeratePackageVersionsV3)
 					r.Get("/{version}/{filename}", nuget.DownloadPackageFile)
 				})
 				r.Group("", func() {
@@ -197,6 +201,10 @@ func Routes(ctx gocontext.Context) *web.Route {
 					r.Delete("/{id}/{version}", nuget.DeletePackage)
 				}, reqPackageAccess(perm.AccessModeWrite))
 				r.Get("/symbols/{filename}/{guid:[0-9a-fA-F]{32}[fF]{8}}/{filename2}", nuget.DownloadSymbolFile)
+				r.Get("/Packages(Id='{id:[^']+}',Version='{version:[^']+}')", nuget.RegistrationLeafV2)
+				r.Get("/Packages()", nuget.SearchServiceV2)
+				r.Get("/FindPackagesById()", nuget.EnumeratePackageVersionsV2)
+				r.Get("/Search()", nuget.SearchServiceV2)
 			}, reqPackageAccess(perm.AccessModeRead))
 		})
 		r.Group("/npm", func() {