Adding upstream version 9.0.3.

Signed-off-by: Daniel Baumann <daniel@debian.org>

1 files changed, 289 insertions, 0 deletions

diff --git a/modules/packages/npm/creator.go b/modules/packages/npm/creator.go
new file mode 100644
index 0000000..7d3d7cd
--- /dev/null
+++ b/modules/packages/npm/creator.go
@@ -0,0 +1,289 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package npm
+
+import (
+	"bytes"
+	"crypto/sha1"
+	"crypto/sha512"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"regexp"
+	"strings"
+	"time"
+
+	"code.gitea.io/gitea/modules/json"
+	"code.gitea.io/gitea/modules/util"
+	"code.gitea.io/gitea/modules/validation"
+
+	"github.com/hashicorp/go-version"
+)
+
+var (
+	// ErrInvalidPackage indicates an invalid package
+	ErrInvalidPackage = util.NewInvalidArgumentErrorf("package is invalid")
+	// ErrInvalidPackageName indicates an invalid name
+	ErrInvalidPackageName = util.NewInvalidArgumentErrorf("package name is invalid")
+	// ErrInvalidPackageVersion indicates an invalid version
+	ErrInvalidPackageVersion = util.NewInvalidArgumentErrorf("package version is invalid")
+	// ErrInvalidAttachment indicates a invalid attachment
+	ErrInvalidAttachment = util.NewInvalidArgumentErrorf("package attachment is invalid")
+	// ErrInvalidIntegrity indicates an integrity validation error
+	ErrInvalidIntegrity = util.NewInvalidArgumentErrorf("failed to validate integrity")
+)
+
+var nameMatch = regexp.MustCompile(`^(@[a-z0-9-][a-z0-9-._]*/)?[a-z0-9-][a-z0-9-._]*$`)
+
+// Package represents a npm package
+type Package struct {
+	Name     string
+	Version  string
+	DistTags []string
+	Metadata Metadata
+	Filename string
+	Data     []byte
+}
+
+// PackageMetadata https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#package
+type PackageMetadata struct {
+	ID             string                             `json:"_id"`
+	Name           string                             `json:"name"`
+	Description    string                             `json:"description"`
+	DistTags       map[string]string                  `json:"dist-tags,omitempty"`
+	Versions       map[string]*PackageMetadataVersion `json:"versions"`
+	Readme         string                             `json:"readme,omitempty"`
+	Maintainers    []User                             `json:"maintainers,omitempty"`
+	Time           map[string]time.Time               `json:"time,omitempty"`
+	Homepage       string                             `json:"homepage,omitempty"`
+	Keywords       []string                           `json:"keywords,omitempty"`
+	Repository     Repository                         `json:"repository,omitempty"`
+	Author         User                               `json:"author"`
+	ReadmeFilename string                             `json:"readmeFilename,omitempty"`
+	Users          map[string]bool                    `json:"users,omitempty"`
+	License        string                             `json:"license,omitempty"`
+}
+
+// PackageMetadataVersion documentation: https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#version
+// PackageMetadataVersion response: https://github.com/npm/registry/blob/master/docs/responses/package-metadata.md#abbreviated-version-object
+type PackageMetadataVersion struct {
+	ID                   string              `json:"_id"`
+	Name                 string              `json:"name"`
+	Version              string              `json:"version"`
+	Description          string              `json:"description"`
+	Author               User                `json:"author"`
+	Homepage             string              `json:"homepage,omitempty"`
+	License              string              `json:"license,omitempty"`
+	Repository           Repository          `json:"repository,omitempty"`
+	Keywords             []string            `json:"keywords,omitempty"`
+	Dependencies         map[string]string   `json:"dependencies,omitempty"`
+	BundleDependencies   []string            `json:"bundleDependencies,omitempty"`
+	DevDependencies      map[string]string   `json:"devDependencies,omitempty"`
+	PeerDependencies     map[string]string   `json:"peerDependencies,omitempty"`
+	Bin                  map[string]string   `json:"bin,omitempty"`
+	OptionalDependencies map[string]string   `json:"optionalDependencies,omitempty"`
+	Readme               string              `json:"readme,omitempty"`
+	Dist                 PackageDistribution `json:"dist"`
+	Maintainers          []User              `json:"maintainers,omitempty"`
+}
+
+// PackageDistribution https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#version
+type PackageDistribution struct {
+	Integrity    string `json:"integrity"`
+	Shasum       string `json:"shasum"`
+	Tarball      string `json:"tarball"`
+	FileCount    int    `json:"fileCount,omitempty"`
+	UnpackedSize int    `json:"unpackedSize,omitempty"`
+	NpmSignature string `json:"npm-signature,omitempty"`
+}
+
+type PackageSearch struct {
+	Objects []*PackageSearchObject `json:"objects"`
+	Total   int64                  `json:"total"`
+}
+
+type PackageSearchObject struct {
+	Package *PackageSearchPackage `json:"package"`
+}
+
+type PackageSearchPackage struct {
+	Scope       string                     `json:"scope"`
+	Name        string                     `json:"name"`
+	Version     string                     `json:"version"`
+	Date        time.Time                  `json:"date"`
+	Description string                     `json:"description"`
+	Author      User                       `json:"author"`
+	Publisher   User                       `json:"publisher"`
+	Maintainers []User                     `json:"maintainers"`
+	Keywords    []string                   `json:"keywords,omitempty"`
+	Links       *PackageSearchPackageLinks `json:"links"`
+}
+
+type PackageSearchPackageLinks struct {
+	Registry   string `json:"npm"`
+	Homepage   string `json:"homepage,omitempty"`
+	Repository string `json:"repository,omitempty"`
+}
+
+// User https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#package
+type User struct {
+	Username string `json:"username,omitempty"`
+	Name     string `json:"name"`
+	Email    string `json:"email,omitempty"`
+	URL      string `json:"url,omitempty"`
+}
+
+// UnmarshalJSON is needed because User objects can be strings or objects
+func (u *User) UnmarshalJSON(data []byte) error {
+	switch data[0] {
+	case '"':
+		if err := json.Unmarshal(data, &u.Name); err != nil {
+			return err
+		}
+	case '{':
+		var tmp struct {
+			Username string `json:"username"`
+			Name     string `json:"name"`
+			Email    string `json:"email"`
+			URL      string `json:"url"`
+		}
+		if err := json.Unmarshal(data, &tmp); err != nil {
+			return err
+		}
+		u.Username = tmp.Username
+		u.Name = tmp.Name
+		u.Email = tmp.Email
+		u.URL = tmp.URL
+	}
+	return nil
+}
+
+// Repository https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#version
+type Repository struct {
+	Type string `json:"type"`
+	URL  string `json:"url"`
+}
+
+// PackageAttachment https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#package
+type PackageAttachment struct {
+	ContentType string `json:"content_type"`
+	Data        string `json:"data"`
+	Length      int    `json:"length"`
+}
+
+type packageUpload struct {
+	PackageMetadata
+	Attachments map[string]*PackageAttachment `json:"_attachments"`
+}
+
+// ParsePackage parses the content into a npm package
+func ParsePackage(r io.Reader) (*Package, error) {
+	var upload packageUpload
+	if err := json.NewDecoder(r).Decode(&upload); err != nil {
+		return nil, err
+	}
+
+	for _, meta := range upload.Versions {
+		if !validateName(meta.Name) {
+			return nil, ErrInvalidPackageName
+		}
+
+		v, err := version.NewSemver(meta.Version)
+		if err != nil {
+			return nil, ErrInvalidPackageVersion
+		}
+
+		scope := ""
+		name := meta.Name
+		nameParts := strings.SplitN(meta.Name, "/", 2)
+		if len(nameParts) == 2 {
+			scope = nameParts[0]
+			name = nameParts[1]
+		}
+
+		if !validation.IsValidURL(meta.Homepage) {
+			meta.Homepage = ""
+		}
+
+		p := &Package{
+			Name:     meta.Name,
+			Version:  v.String(),
+			DistTags: make([]string, 0, 1),
+			Metadata: Metadata{
+				Scope:                   scope,
+				Name:                    name,
+				Description:             meta.Description,
+				Author:                  meta.Author.Name,
+				License:                 meta.License,
+				ProjectURL:              meta.Homepage,
+				Keywords:                meta.Keywords,
+				Dependencies:            meta.Dependencies,
+				BundleDependencies:      meta.BundleDependencies,
+				DevelopmentDependencies: meta.DevDependencies,
+				PeerDependencies:        meta.PeerDependencies,
+				OptionalDependencies:    meta.OptionalDependencies,
+				Bin:                     meta.Bin,
+				Readme:                  meta.Readme,
+				Repository:              meta.Repository,
+			},
+		}
+
+		for tag := range upload.DistTags {
+			p.DistTags = append(p.DistTags, tag)
+		}
+
+		p.Filename = strings.ToLower(fmt.Sprintf("%s-%s.tgz", name, p.Version))
+
+		attachment := func() *PackageAttachment {
+			for _, a := range upload.Attachments {
+				return a
+			}
+			return nil
+		}()
+		if attachment == nil || len(attachment.Data) == 0 {
+			return nil, ErrInvalidAttachment
+		}
+
+		data, err := base64.StdEncoding.DecodeString(attachment.Data)
+		if err != nil {
+			return nil, ErrInvalidAttachment
+		}
+		p.Data = data
+
+		integrity := strings.SplitN(meta.Dist.Integrity, "-", 2)
+		if len(integrity) != 2 {
+			return nil, ErrInvalidIntegrity
+		}
+		integrityHash, err := base64.StdEncoding.DecodeString(integrity[1])
+		if err != nil {
+			return nil, ErrInvalidIntegrity
+		}
+		var hash []byte
+		switch integrity[0] {
+		case "sha1":
+			tmp := sha1.Sum(data)
+			hash = tmp[:]
+		case "sha512":
+			tmp := sha512.Sum512(data)
+			hash = tmp[:]
+		}
+		if !bytes.Equal(integrityHash, hash) {
+			return nil, ErrInvalidIntegrity
+		}
+
+		return p, nil
+	}
+
+	return nil, ErrInvalidPackage
+}
+
+func validateName(name string) bool {
+	if strings.TrimSpace(name) != name {
+		return false
+	}
+	if len(name) == 0 || len(name) > 214 {
+		return false
+	}
+	return nameMatch.MatchString(name)
+}