mirror of
https://codeberg.org/forgejo/forgejo
synced 2024-11-22 09:54:24 +01:00
290 lines
9.4 KiB
Go
290 lines
9.4 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package npm
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import (
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"bytes"
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"crypto/sha1"
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"crypto/sha512"
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"encoding/base64"
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"fmt"
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"io"
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"regexp"
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"strings"
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"time"
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"code.gitea.io/gitea/modules/json"
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"code.gitea.io/gitea/modules/util"
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"code.gitea.io/gitea/modules/validation"
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"github.com/hashicorp/go-version"
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)
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var (
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// ErrInvalidPackage indicates an invalid package
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ErrInvalidPackage = util.NewInvalidArgumentErrorf("package is invalid")
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// ErrInvalidPackageName indicates an invalid name
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ErrInvalidPackageName = util.NewInvalidArgumentErrorf("package name is invalid")
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// ErrInvalidPackageVersion indicates an invalid version
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ErrInvalidPackageVersion = util.NewInvalidArgumentErrorf("package version is invalid")
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// ErrInvalidAttachment indicates a invalid attachment
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ErrInvalidAttachment = util.NewInvalidArgumentErrorf("package attachment is invalid")
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// ErrInvalidIntegrity indicates an integrity validation error
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ErrInvalidIntegrity = util.NewInvalidArgumentErrorf("failed to validate integrity")
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)
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var nameMatch = regexp.MustCompile(`^(@[a-z0-9-][a-z0-9-._]*/)?[a-z0-9-][a-z0-9-._]*$`)
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// Package represents a npm package
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type Package struct {
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Name string
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Version string
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DistTags []string
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Metadata Metadata
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Filename string
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Data []byte
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}
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// PackageMetadata https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#package
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type PackageMetadata struct {
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ID string `json:"_id"`
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Name string `json:"name"`
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Description string `json:"description"`
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DistTags map[string]string `json:"dist-tags,omitempty"`
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Versions map[string]*PackageMetadataVersion `json:"versions"`
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Readme string `json:"readme,omitempty"`
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Maintainers []User `json:"maintainers,omitempty"`
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Time map[string]time.Time `json:"time,omitempty"`
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Homepage string `json:"homepage,omitempty"`
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Keywords []string `json:"keywords,omitempty"`
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Repository Repository `json:"repository,omitempty"`
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Author User `json:"author"`
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ReadmeFilename string `json:"readmeFilename,omitempty"`
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Users map[string]bool `json:"users,omitempty"`
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License string `json:"license,omitempty"`
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}
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// PackageMetadataVersion documentation: https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#version
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// PackageMetadataVersion response: https://github.com/npm/registry/blob/master/docs/responses/package-metadata.md#abbreviated-version-object
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type PackageMetadataVersion struct {
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ID string `json:"_id"`
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Name string `json:"name"`
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Version string `json:"version"`
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Description string `json:"description"`
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Author User `json:"author"`
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Homepage string `json:"homepage,omitempty"`
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License string `json:"license,omitempty"`
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Repository Repository `json:"repository,omitempty"`
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Keywords []string `json:"keywords,omitempty"`
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Dependencies map[string]string `json:"dependencies,omitempty"`
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BundleDependencies []string `json:"bundleDependencies,omitempty"`
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DevDependencies map[string]string `json:"devDependencies,omitempty"`
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PeerDependencies map[string]string `json:"peerDependencies,omitempty"`
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Bin map[string]string `json:"bin,omitempty"`
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OptionalDependencies map[string]string `json:"optionalDependencies,omitempty"`
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Readme string `json:"readme,omitempty"`
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Dist PackageDistribution `json:"dist"`
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Maintainers []User `json:"maintainers,omitempty"`
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}
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// PackageDistribution https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#version
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type PackageDistribution struct {
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Integrity string `json:"integrity"`
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Shasum string `json:"shasum"`
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Tarball string `json:"tarball"`
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FileCount int `json:"fileCount,omitempty"`
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UnpackedSize int `json:"unpackedSize,omitempty"`
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NpmSignature string `json:"npm-signature,omitempty"`
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}
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type PackageSearch struct {
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Objects []*PackageSearchObject `json:"objects"`
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Total int64 `json:"total"`
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}
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type PackageSearchObject struct {
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Package *PackageSearchPackage `json:"package"`
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}
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type PackageSearchPackage struct {
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Scope string `json:"scope"`
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Name string `json:"name"`
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Version string `json:"version"`
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Date time.Time `json:"date"`
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Description string `json:"description"`
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Author User `json:"author"`
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Publisher User `json:"publisher"`
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Maintainers []User `json:"maintainers"`
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Keywords []string `json:"keywords,omitempty"`
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Links *PackageSearchPackageLinks `json:"links"`
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}
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type PackageSearchPackageLinks struct {
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Registry string `json:"npm"`
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Homepage string `json:"homepage,omitempty"`
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Repository string `json:"repository,omitempty"`
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}
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// User https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#package
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type User struct {
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Username string `json:"username,omitempty"`
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Name string `json:"name"`
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Email string `json:"email,omitempty"`
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URL string `json:"url,omitempty"`
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}
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// UnmarshalJSON is needed because User objects can be strings or objects
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func (u *User) UnmarshalJSON(data []byte) error {
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switch data[0] {
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case '"':
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if err := json.Unmarshal(data, &u.Name); err != nil {
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return err
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}
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case '{':
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var tmp struct {
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Username string `json:"username"`
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Name string `json:"name"`
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Email string `json:"email"`
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URL string `json:"url"`
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}
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if err := json.Unmarshal(data, &tmp); err != nil {
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return err
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}
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u.Username = tmp.Username
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u.Name = tmp.Name
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u.Email = tmp.Email
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u.URL = tmp.URL
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}
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return nil
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}
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// Repository https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#version
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type Repository struct {
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Type string `json:"type"`
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URL string `json:"url"`
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}
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// PackageAttachment https://github.com/npm/registry/blob/master/docs/REGISTRY-API.md#package
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type PackageAttachment struct {
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ContentType string `json:"content_type"`
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Data string `json:"data"`
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Length int `json:"length"`
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}
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type packageUpload struct {
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PackageMetadata
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Attachments map[string]*PackageAttachment `json:"_attachments"`
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}
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// ParsePackage parses the content into a npm package
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func ParsePackage(r io.Reader) (*Package, error) {
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var upload packageUpload
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if err := json.NewDecoder(r).Decode(&upload); err != nil {
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return nil, err
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}
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for _, meta := range upload.Versions {
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if !validateName(meta.Name) {
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return nil, ErrInvalidPackageName
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}
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v, err := version.NewSemver(meta.Version)
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if err != nil {
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return nil, ErrInvalidPackageVersion
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}
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scope := ""
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name := meta.Name
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nameParts := strings.SplitN(meta.Name, "/", 2)
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if len(nameParts) == 2 {
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scope = nameParts[0]
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name = nameParts[1]
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}
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if !validation.IsValidURL(meta.Homepage) {
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meta.Homepage = ""
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}
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p := &Package{
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Name: meta.Name,
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Version: v.String(),
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DistTags: make([]string, 0, 1),
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Metadata: Metadata{
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Scope: scope,
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Name: name,
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Description: meta.Description,
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Author: meta.Author.Name,
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License: meta.License,
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ProjectURL: meta.Homepage,
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Keywords: meta.Keywords,
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Dependencies: meta.Dependencies,
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BundleDependencies: meta.BundleDependencies,
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DevelopmentDependencies: meta.DevDependencies,
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PeerDependencies: meta.PeerDependencies,
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OptionalDependencies: meta.OptionalDependencies,
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Bin: meta.Bin,
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Readme: meta.Readme,
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Repository: meta.Repository,
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},
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}
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for tag := range upload.DistTags {
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p.DistTags = append(p.DistTags, tag)
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}
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p.Filename = strings.ToLower(fmt.Sprintf("%s-%s.tgz", name, p.Version))
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attachment := func() *PackageAttachment {
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for _, a := range upload.Attachments {
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return a
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}
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return nil
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}()
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if attachment == nil || len(attachment.Data) == 0 {
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return nil, ErrInvalidAttachment
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}
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data, err := base64.StdEncoding.DecodeString(attachment.Data)
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if err != nil {
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return nil, ErrInvalidAttachment
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}
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p.Data = data
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integrity := strings.SplitN(meta.Dist.Integrity, "-", 2)
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if len(integrity) != 2 {
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return nil, ErrInvalidIntegrity
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}
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integrityHash, err := base64.StdEncoding.DecodeString(integrity[1])
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if err != nil {
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return nil, ErrInvalidIntegrity
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}
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var hash []byte
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switch integrity[0] {
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case "sha1":
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tmp := sha1.Sum(data)
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hash = tmp[:]
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case "sha512":
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tmp := sha512.Sum512(data)
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hash = tmp[:]
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}
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if !bytes.Equal(integrityHash, hash) {
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return nil, ErrInvalidIntegrity
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}
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return p, nil
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}
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return nil, ErrInvalidPackage
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}
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func validateName(name string) bool {
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if strings.TrimSpace(name) != name {
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return false
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}
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if len(name) == 0 || len(name) > 214 {
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return false
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}
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return nameMatch.MatchString(name)
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}
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