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// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package rpm
import (
"fmt"
"io"
"strings"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/validation"
"github.com/sassoftware/go-rpmutils"
)
const (
PropertyMetadata = "rpm.metadata"
PropertyGroup = "rpm.group"
PropertyArchitecture = "rpm.architecture"
SettingKeyPrivate = "rpm.key.private"
SettingKeyPublic = "rpm.key.public"
RepositoryPackage = "_rpm"
RepositoryVersion = "_repository"
)
const (
// Can't use the syscall constants because they are not available for windows build.
sIFMT = 0xf000
sIFDIR = 0x4000
sIXUSR = 0x40
sIXGRP = 0x8
sIXOTH = 0x1
)
// https://rpm-software-management.github.io/rpm/manual/spec.html
// https://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/pkgformat.html
type Package struct {
Name string
Version string
VersionMetadata *VersionMetadata
FileMetadata *FileMetadata
}
type VersionMetadata struct {
License string `json:"license,omitempty"`
ProjectURL string `json:"project_url,omitempty"`
Summary string `json:"summary,omitempty"`
Description string `json:"description,omitempty"`
}
type FileMetadata struct {
Architecture string `json:"architecture,omitempty"`
Epoch string `json:"epoch,omitempty"`
Version string `json:"version,omitempty"`
Release string `json:"release,omitempty"`
Vendor string `json:"vendor,omitempty"`
Group string `json:"group,omitempty"`
Packager string `json:"packager,omitempty"`
SourceRpm string `json:"source_rpm,omitempty"`
BuildHost string `json:"build_host,omitempty"`
BuildTime uint64 `json:"build_time,omitempty"`
FileTime uint64 `json:"file_time,omitempty"`
InstalledSize uint64 `json:"installed_size,omitempty"`
ArchiveSize uint64 `json:"archive_size,omitempty"`
Provides []*Entry `json:"provide,omitempty"`
Requires []*Entry `json:"require,omitempty"`
Conflicts []*Entry `json:"conflict,omitempty"`
Obsoletes []*Entry `json:"obsolete,omitempty"`
Files []*File `json:"files,omitempty"`
Changelogs []*Changelog `json:"changelogs,omitempty"`
}
type Entry struct {
Name string `json:"name" xml:"name,attr"`
Flags string `json:"flags,omitempty" xml:"flags,attr,omitempty"`
Version string `json:"version,omitempty" xml:"ver,attr,omitempty"`
Epoch string `json:"epoch,omitempty" xml:"epoch,attr,omitempty"`
Release string `json:"release,omitempty" xml:"rel,attr,omitempty"`
}
type File struct {
Path string `json:"path" xml:",chardata"`
Type string `json:"type,omitempty" xml:"type,attr,omitempty"`
IsExecutable bool `json:"is_executable" xml:"-"`
}
type Changelog struct {
Author string `json:"author,omitempty" xml:"author,attr"`
Date timeutil.TimeStamp `json:"date,omitempty" xml:"date,attr"`
Text string `json:"text,omitempty" xml:",chardata"`
}
// ParsePackage parses the RPM package file
func ParsePackage(r io.Reader) (*Package, error) {
rpm, err := rpmutils.ReadRpm(r)
if err != nil {
return nil, err
}
nevra, err := rpm.Header.GetNEVRA()
if err != nil {
return nil, err
}
version := fmt.Sprintf("%s-%s", nevra.Version, nevra.Release)
if nevra.Epoch != "" && nevra.Epoch != "0" {
version = fmt.Sprintf("%s-%s", nevra.Epoch, version)
}
p := &Package{
Name: nevra.Name,
Version: version,
VersionMetadata: &VersionMetadata{
Summary: getString(rpm.Header, rpmutils.SUMMARY),
Description: getString(rpm.Header, rpmutils.DESCRIPTION),
License: getString(rpm.Header, rpmutils.LICENSE),
ProjectURL: getString(rpm.Header, rpmutils.URL),
},
FileMetadata: &FileMetadata{
Architecture: nevra.Arch,
Epoch: nevra.Epoch,
Version: nevra.Version,
Release: nevra.Release,
Vendor: getString(rpm.Header, rpmutils.VENDOR),
Group: getString(rpm.Header, rpmutils.GROUP),
Packager: getString(rpm.Header, rpmutils.PACKAGER),
SourceRpm: getString(rpm.Header, rpmutils.SOURCERPM),
BuildHost: getString(rpm.Header, rpmutils.BUILDHOST),
BuildTime: getUInt64(rpm.Header, rpmutils.BUILDTIME),
FileTime: getUInt64(rpm.Header, rpmutils.FILEMTIMES),
InstalledSize: getUInt64(rpm.Header, rpmutils.SIZE),
ArchiveSize: getUInt64(rpm.Header, rpmutils.SIG_PAYLOADSIZE),
Provides: getEntries(rpm.Header, rpmutils.PROVIDENAME, rpmutils.PROVIDEVERSION, rpmutils.PROVIDEFLAGS),
Requires: getEntries(rpm.Header, rpmutils.REQUIRENAME, rpmutils.REQUIREVERSION, rpmutils.REQUIREFLAGS),
Conflicts: getEntries(rpm.Header, rpmutils.CONFLICTNAME, rpmutils.CONFLICTVERSION, rpmutils.CONFLICTFLAGS),
Obsoletes: getEntries(rpm.Header, rpmutils.OBSOLETENAME, rpmutils.OBSOLETEVERSION, rpmutils.OBSOLETEFLAGS),
Files: getFiles(rpm.Header),
Changelogs: getChangelogs(rpm.Header),
},
}
if !validation.IsValidURL(p.VersionMetadata.ProjectURL) {
p.VersionMetadata.ProjectURL = ""
}
return p, nil
}
func getString(h *rpmutils.RpmHeader, tag int) string {
values, err := h.GetStrings(tag)
if err != nil || len(values) < 1 {
return ""
}
return values[0]
}
func getUInt64(h *rpmutils.RpmHeader, tag int) uint64 {
values, err := h.GetUint64s(tag)
if err != nil || len(values) < 1 {
return 0
}
return values[0]
}
func getEntries(h *rpmutils.RpmHeader, namesTag, versionsTag, flagsTag int) []*Entry {
names, err := h.GetStrings(namesTag)
if err != nil || len(names) == 0 {
return nil
}
flags, err := h.GetUint64s(flagsTag)
if err != nil || len(flags) == 0 {
return nil
}
versions, err := h.GetStrings(versionsTag)
if err != nil || len(versions) == 0 {
return nil
}
if len(names) != len(flags) || len(names) != len(versions) {
return nil
}
entries := make([]*Entry, 0, len(names))
for i := range names {
e := &Entry{
Name: names[i],
}
flags := flags[i]
if (flags&rpmutils.RPMSENSE_GREATER) != 0 && (flags&rpmutils.RPMSENSE_EQUAL) != 0 {
e.Flags = "GE"
} else if (flags&rpmutils.RPMSENSE_LESS) != 0 && (flags&rpmutils.RPMSENSE_EQUAL) != 0 {
e.Flags = "LE"
} else if (flags & rpmutils.RPMSENSE_GREATER) != 0 {
e.Flags = "GT"
} else if (flags & rpmutils.RPMSENSE_LESS) != 0 {
e.Flags = "LT"
} else if (flags & rpmutils.RPMSENSE_EQUAL) != 0 {
e.Flags = "EQ"
}
version := versions[i]
if version != "" {
parts := strings.Split(version, "-")
versionParts := strings.Split(parts[0], ":")
if len(versionParts) == 2 {
e.Version = versionParts[1]
e.Epoch = versionParts[0]
} else {
e.Version = versionParts[0]
e.Epoch = "0"
}
if len(parts) > 1 {
e.Release = parts[1]
}
}
entries = append(entries, e)
}
return entries
}
func getFiles(h *rpmutils.RpmHeader) []*File {
baseNames, _ := h.GetStrings(rpmutils.BASENAMES)
dirNames, _ := h.GetStrings(rpmutils.DIRNAMES)
dirIndexes, _ := h.GetUint32s(rpmutils.DIRINDEXES)
fileFlags, _ := h.GetUint32s(rpmutils.FILEFLAGS)
fileModes, _ := h.GetUint32s(rpmutils.FILEMODES)
files := make([]*File, 0, len(baseNames))
for i := range baseNames {
if len(dirIndexes) <= i {
continue
}
dirIndex := dirIndexes[i]
if len(dirNames) <= int(dirIndex) {
continue
}
var fileType string
var isExecutable bool
if i < len(fileFlags) && (fileFlags[i]&rpmutils.RPMFILE_GHOST) != 0 {
fileType = "ghost"
} else if i < len(fileModes) {
if (fileModes[i] & sIFMT) == sIFDIR {
fileType = "dir"
} else {
mode := fileModes[i] & ^uint32(sIFMT)
isExecutable = (mode&sIXUSR) != 0 || (mode&sIXGRP) != 0 || (mode&sIXOTH) != 0
}
}
files = append(files, &File{
Path: dirNames[dirIndex] + baseNames[i],
Type: fileType,
IsExecutable: isExecutable,
})
}
return files
}
func getChangelogs(h *rpmutils.RpmHeader) []*Changelog {
texts, err := h.GetStrings(rpmutils.CHANGELOGTEXT)
if err != nil || len(texts) == 0 {
return nil
}
authors, err := h.GetStrings(rpmutils.CHANGELOGNAME)
if err != nil || len(authors) == 0 {
return nil
}
times, err := h.GetUint32s(rpmutils.CHANGELOGTIME)
if err != nil || len(times) == 0 {
return nil
}
if len(texts) != len(authors) || len(texts) != len(times) {
return nil
}
changelogs := make([]*Changelog, 0, len(texts))
for i := range texts {
changelogs = append(changelogs, &Changelog{
Author: authors[i],
Date: timeutil.TimeStamp(times[i]),
Text: texts[i],
})
}
return changelogs
}
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