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// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package cargo
import (
"encoding/binary"
"errors"
"io"
"regexp"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/validation"
"github.com/hashicorp/go-version"
)
const PropertyYanked = "cargo.yanked"
var (
ErrInvalidName = errors.New("package name is invalid")
ErrInvalidVersion = errors.New("package version is invalid")
)
// Package represents a Cargo package
type Package struct {
Name string
Version string
Metadata *Metadata
Content io.Reader
ContentSize int64
}
// Metadata represents the metadata of a Cargo package
type Metadata struct {
Dependencies []*Dependency `json:"dependencies,omitempty"`
Features map[string][]string `json:"features,omitempty"`
Authors []string `json:"authors,omitempty"`
Description string `json:"description,omitempty"`
DocumentationURL string `json:"documentation_url,omitempty"`
ProjectURL string `json:"project_url,omitempty"`
Readme string `json:"readme,omitempty"`
Keywords []string `json:"keywords,omitempty"`
Categories []string `json:"categories,omitempty"`
License string `json:"license,omitempty"`
RepositoryURL string `json:"repository_url,omitempty"`
Links string `json:"links,omitempty"`
}
type Dependency struct {
Name string `json:"name"`
Req string `json:"req"`
Features []string `json:"features"`
Optional bool `json:"optional"`
DefaultFeatures bool `json:"default_features"`
Target *string `json:"target"`
Kind string `json:"kind"`
Registry *string `json:"registry"`
Package *string `json:"package"`
}
var nameMatch = regexp.MustCompile(`\A[a-zA-Z][a-zA-Z0-9-_]{0,63}\z`)
// ParsePackage reads the metadata and content of a package
func ParsePackage(r io.Reader) (*Package, error) {
var size uint32
if err := binary.Read(r, binary.LittleEndian, &size); err != nil {
return nil, err
}
p, err := parsePackage(io.LimitReader(r, int64(size)))
if err != nil {
return nil, err
}
if err := binary.Read(r, binary.LittleEndian, &size); err != nil {
return nil, err
}
p.Content = io.LimitReader(r, int64(size))
p.ContentSize = int64(size)
return p, nil
}
func parsePackage(r io.Reader) (*Package, error) {
var meta struct {
Name string `json:"name"`
Vers string `json:"vers"`
Deps []struct {
Name string `json:"name"`
VersionReq string `json:"version_req"`
Features []string `json:"features"`
Optional bool `json:"optional"`
DefaultFeatures bool `json:"default_features"`
Target *string `json:"target"`
Kind string `json:"kind"`
Registry *string `json:"registry"`
ExplicitNameInToml string `json:"explicit_name_in_toml"`
} `json:"deps"`
Features map[string][]string `json:"features"`
Authors []string `json:"authors"`
Description string `json:"description"`
Documentation string `json:"documentation"`
Homepage string `json:"homepage"`
Readme string `json:"readme"`
ReadmeFile string `json:"readme_file"`
Keywords []string `json:"keywords"`
Categories []string `json:"categories"`
License string `json:"license"`
LicenseFile string `json:"license_file"`
Repository string `json:"repository"`
Links string `json:"links"`
}
if err := json.NewDecoder(r).Decode(&meta); err != nil {
return nil, err
}
if !nameMatch.MatchString(meta.Name) {
return nil, ErrInvalidName
}
if _, err := version.NewSemver(meta.Vers); err != nil {
return nil, ErrInvalidVersion
}
if !validation.IsValidURL(meta.Homepage) {
meta.Homepage = ""
}
if !validation.IsValidURL(meta.Documentation) {
meta.Documentation = ""
}
if !validation.IsValidURL(meta.Repository) {
meta.Repository = ""
}
dependencies := make([]*Dependency, 0, len(meta.Deps))
for _, dep := range meta.Deps {
dependencies = append(dependencies, &Dependency{
Name: dep.Name,
Req: dep.VersionReq,
Features: dep.Features,
Optional: dep.Optional,
DefaultFeatures: dep.DefaultFeatures,
Target: dep.Target,
Kind: dep.Kind,
Registry: dep.Registry,
})
}
return &Package{
Name: meta.Name,
Version: meta.Vers,
Metadata: &Metadata{
Dependencies: dependencies,
Features: meta.Features,
Authors: meta.Authors,
Description: meta.Description,
DocumentationURL: meta.Documentation,
ProjectURL: meta.Homepage,
Readme: meta.Readme,
Keywords: meta.Keywords,
Categories: meta.Categories,
License: meta.License,
RepositoryURL: meta.Repository,
Links: meta.Links,
},
}, nil
}
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