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packagist.go
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packagist.go
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package pkgmanager
import (
"encoding/json"
"fmt"
"net/http"
"strings"
"time"
"github.com/ossf/package-analysis/pkg/api/pkgecosystem"
)
type packagistDistJSON struct {
URL string `json:"url"`
Type string `json:"type"`
Shasum string `json:"shasum,omitempty"`
Reference string `json:"reference"`
}
func (d *packagistDistJSON) UnmarshalJSON(data []byte) error {
switch string(data) {
case "null":
return nil
case `"__unset"`:
return nil
}
type raw packagistDistJSON
return json.Unmarshal(data, (*raw)(d))
}
type packagistJSON struct {
Packages map[string][]struct {
Version string `json:"version"`
VersionNormalized string `json:"version_normalized"`
License []string `json:"license,omitempty"`
Time time.Time `json:"time"`
Name string `json:"name,omitempty"`
Dist packagistDistJSON `json:"dist"`
} `json:"packages"`
}
func getPackagistLatest(pkg string) (string, error) {
resp, err := http.Get(fmt.Sprintf("https://repo.packagist.org/p2/%s.json", pkg))
if err != nil {
return "", err
}
defer resp.Body.Close()
decoder := json.NewDecoder(resp.Body)
var details packagistJSON
err = decoder.Decode(&details)
if err != nil {
return "", err
}
latestVersion := ""
var lastTime time.Time
for _, versions := range details.Packages {
for _, v := range versions {
if v.Time.Before(lastTime) {
continue
}
lastTime = v.Time
latestVersion = v.Version
}
}
return latestVersion, nil
}
func getPackagistArchiveURL(pkgName, version string) (string, error) {
resp, err := http.Get(fmt.Sprintf("https://repo.packagist.org/p2/%s.json", pkgName))
if err != nil {
return "", err
}
defer resp.Body.Close()
decoder := json.NewDecoder(resp.Body)
var details packagistJSON
err = decoder.Decode(&details)
if err != nil {
return "", err
}
for _, versions := range details.Packages {
for _, v := range versions {
if v.Version == version {
return v.Dist.URL, nil
}
}
}
return "", nil
}
func getPackagistArchiveFilename(pkgName, version, _ string) string {
pkg := strings.Split(pkgName, "/")
return strings.Join([]string{pkg[0], "-", pkg[1], "-", version, ".zip"}, "")
}
var packagistPkgManager = PkgManager{
ecosystem: pkgecosystem.Packagist,
latestVersion: getPackagistLatest,
archiveURL: getPackagistArchiveURL,
archiveFilename: getPackagistArchiveFilename,
}