Add 'downloads' field in pkg.info

src/bpm/main.go

@@ -21,7 +21,7 @@ import (
 /*             A simple-to-use package manager             */
 /* ------------------------------------------------------- */
 
-var bpmVer = "0.5.0"
+var bpmVer = "0.6.0"
 
 var subcommand = "help"
 var subcommandArgs []string

src/bpmlib/compilation.go

@@ -1,11 +1,15 @@
 package bpmlib
 
 import (
+	"crypto/sha256"
+	"encoding/hex"
 	"errors"
 	"fmt"
+	"io"
 	"os"
 	"os/exec"
 	"path"
+	"slices"
 	"strconv"
 	"strings"
 	"syscall"
@@ -31,12 +35,6 @@ func CompileSourcePackage(archiveFilename, outputDirectory string, skipChecks bo
 		return nil, errors.New("cannot compile a non-source package")
 	}
 
-	// Read compilation options file in current directory
-	compilationOptions, err := readCompilationOptionsFile()
-	if err != nil {
-		return nil, err
-	}
-
 	// Get HOME directory
 	homeDir, err := os.UserHomeDir()
 	if err != nil {
@@ -122,6 +120,12 @@ func CompileSourcePackage(archiveFilename, outputDirectory string, skipChecks bo
 		return nil, err
 	}
 
+	// Download files
+	err = downloadPackageFiles(bpmpkg.PkgInfo, tempDirectory)
+	if err != nil {
+		return nil, err
+	}
+
 	// Setup environment for commands
 	env := os.Environ()
 	env = append(env, "HOME="+tempDirectory)
@@ -131,12 +135,7 @@ func CompileSourcePackage(archiveFilename, outputDirectory string, skipChecks bo
 	env = append(env, "BPM_PKG_NAME="+bpmpkg.PkgInfo.Name)
 	env = append(env, "BPM_PKG_VERSION="+bpmpkg.PkgInfo.Version)
 	env = append(env, "BPM_PKG_REVISION="+strconv.Itoa(bpmpkg.PkgInfo.Revision))
-	// Check for architecture override in compilation options
-	if val, ok := compilationOptions["ARCH"]; ok {
-		env = append(env, "BPM_PKG_ARCH="+val)
-	} else {
-		env = append(env, "BPM_PKG_ARCH="+GetArch())
-	}
+	env = append(env, "BPM_PKG_ARCH="+bpmpkg.PkgInfo.OutputArch)
 	env = append(env, CompilationBPMConfig.CompilationEnvironment...)
 
 	// Execute prepare and build functions in source.sh script
@@ -259,14 +258,12 @@ func CompileSourcePackage(archiveFilename, outputDirectory string, skipChecks bo
 		pkgInfo.Type = "binary"
 
 		// Set package architecture
-		if val, ok := compilationOptions["ARCH"]; ok {
-			pkgInfo.Arch = val
-		} else {
-			pkgInfo.Arch = GetArch()
-		}
+		pkgInfo.Arch = pkg.OutputArch
+		pkgInfo.OutputArch = ""
 
-		// Remove split package field
+		// Remove split package and downloads fields
 		pkgInfo.SplitPackages = nil
+		pkgInfo.Downloads = nil
 
 		// Marshal package info
 		pkgInfoBytes, err := yaml.Marshal(pkgInfo)
@@ -338,46 +335,142 @@ func CompileSourcePackage(archiveFilename, outputDirectory string, skipChecks bo
 	return outputBpmPackages, nil
 }
 
-func readCompilationOptionsFile() (options map[string]string, err error) {
-	// Initialize options map
-	options = make(map[string]string)
+func downloadPackageFiles(pkgInfo *PackageInfo, tempDirectory string) error {
+	for _, download := range pkgInfo.Downloads {
+		// Replace variables in download url
+		downloadUrl := download.Url
+		downloadUrl = os.Expand(downloadUrl, func(s string) string {
+			switch s {
+			case "BPM_PKG_VERSION":
+				return pkgInfo.Version
+			case "BPM_PKG_NAME":
+				return pkgInfo.Name
+			default:
+				return ""
+			}
+		})
 
-	// Check if file compilation options file exists
-	stat, err := os.Stat(".compilation-options")
+		switch download.Type {
+		case "", "file":
+			filepath := path.Join(tempDirectory, path.Base(downloadUrl))
+			if download.Filepath != "" {
+				filepath = download.Filepath
+			}
+
+			err := downloadFile(downloadUrl, filepath, 0644)
 			if err != nil {
-		return nil, nil
+				return err
 			}
 
-	// Ensure it is a regular file
-	if !stat.Mode().IsRegular() {
-		return nil, fmt.Errorf("%s is not a regular file", stat.Name())
-	}
-
-	// Read file data
-	data, err := os.ReadFile(stat.Name())
+			if download.Checksum != "skip" {
+				f, err := os.Open(filepath)
 				if err != nil {
-		return nil, err
+					return err
+				}
+				defer f.Close()
+
+				h := sha256.New()
+				_, err = io.Copy(h, f)
+				if err != nil {
+					return err
 				}
 
-	for _, line := range strings.Split(string(data), "\n") {
-		// Trim line
-		line = strings.TrimSpace(line)
-
-		// Skip empty lines
-		if line == "" {
-			continue
+				if hex.EncodeToString(h.Sum(nil)) != download.Checksum {
+					fmt.Printf("Downloaded file checksum: %x\n", h.Sum(nil))
+					return fmt.Errorf("downloaded file checksums did not match")
+				}
+			} else {
+				fmt.Println("Skipping checksum checking...")
 			}
 
-		// Split line
-		split := strings.SplitN(line, "=", 2)
-
-		// Throw error if line isn't valid
-		if len(split) < 2 {
-			return nil, fmt.Errorf("invalid line in compilation-options file: '%s'", line)
+			if !download.NoExtract && (strings.Contains(filepath, ".tar") || strings.HasSuffix(filepath, ".tgz")) {
+				cmd := exec.Command("tar", "xvf", filepath, "--strip-components="+strconv.Itoa(download.ExtractStripComponents))
+				if download.ExtractToBPMSource {
+					cmd.Args = append(cmd.Args, "-C", path.Join(tempDirectory, "source"))
 				}
 
-		options[split[0]] = split[1]
+				cmd.Stdout = os.Stdout
+				cmd.Stderr = os.Stderr
+
+				err := cmd.Run()
+				if err != nil {
+					return err
+				}
+			} else if !download.NoExtract && strings.HasSuffix(filepath, ".zip") {
+				cmd := exec.Command("unzip", filepath)
+				if download.ExtractToBPMSource {
+					cmd.Args = append(cmd.Args, "-d", path.Join(tempDirectory, "source"))
+				} else {
+					err := os.Mkdir(path.Join(tempDirectory, strings.TrimSuffix(path.Base(filepath), ".zip")), 0755)
+					if err != nil {
+						return err
 					}
 
-	return options, nil
+					cmd.Args = append(cmd.Args, "-d", path.Join(tempDirectory, strings.TrimSuffix(path.Base(filepath), ".zip")))
+				}
+
+				cmd.Stdout = os.Stdout
+				cmd.Stderr = os.Stderr
+
+				err := cmd.Run()
+				if err != nil {
+					return err
+				}
+			}
+		case "git":
+			// Replace variables in git branch
+			gitBranch := download.GitBranch
+			gitBranch = os.Expand(gitBranch, func(s string) string {
+				switch s {
+				case "BPM_PKG_VERSION":
+					return pkgInfo.Version
+				case "BPM_PKG_NAME":
+					return pkgInfo.Name
+				default:
+					return ""
+				}
+			})
+
+			cmd := exec.Command("git", "clone", "--depth=1", downloadUrl)
+			if gitBranch != "" {
+				cmd.Args = slices.Insert(cmd.Args, len(cmd.Args)-1, "--branch="+gitBranch)
+			}
+			if download.ExtractToBPMSource {
+				cmd.Args = append(cmd.Args, path.Join(tempDirectory, "source"))
+			}
+
+			cmd.Stdout = os.Stdout
+			cmd.Stderr = os.Stderr
+
+			err := cmd.Run()
+			if err != nil {
+				return err
+			}
+
+			if download.Checksum != "skip" {
+				cmd := exec.Command("git", "rev-parse", "HEAD")
+				if download.ExtractToBPMSource {
+					cmd.Dir = path.Join(tempDirectory, "source")
+				} else {
+					cmd.Dir = path.Join(tempDirectory, strings.TrimSuffix(path.Base(downloadUrl), ".git"))
+				}
+
+				branchChecksum, err := cmd.Output()
+				if err != nil {
+					return err
+				}
+
+				if strings.TrimSpace(string(branchChecksum)) != download.Checksum {
+					fmt.Printf("Git branch checksum: %s\n", strings.TrimSpace(string(branchChecksum)))
+					return fmt.Errorf("Cloned git repository checksum did not match")
+				}
+			} else {
+				fmt.Println("Skipping checksum checking...")
+			}
+		default:
+			return fmt.Errorf("unknown download type (%s)", download.Type)
+		}
+	}
+
+	return nil
 }

src/bpmlib/databases.go

@@ -3,8 +3,6 @@ package bpmlib
 import (
 	"errors"
 	"fmt"
-	"io"
-	"net/http"
 	"net/url"
 	"os"
 	"path"
@@ -132,14 +130,10 @@ func (db *configDatabase) SyncLocalDatabaseFile() error {
 	}
 
 	// Retrieve data from URL
-	resp, err := http.Get(u)
+	buffer, err := retrieveUrlData(u)
 	if err != nil {
 		return err
 	}
-	defer resp.Body.Close()
-
-	// Load data into byte buffer
-	buffer, err := io.ReadAll(resp.Body)
 
 	// Unmarshal data to ensure it is a valid BPM database
 	err = yaml.Unmarshal(buffer, &BPMDatabase{})
@@ -233,30 +227,23 @@ func ResolveVirtualPackage(vpkg string) *BPMDatabaseEntry {
 }
 
 func (db *BPMDatabase) FetchPackage(pkg string) (string, error) {
+	// Check if package exists in database
 	if !db.ContainsPackage(pkg) {
 		return "", errors.New("could not fetch package '" + pkg + "'")
 	}
+
+	// Get package url from database
 	entry := db.Entries[pkg]
-	URL, err := url.JoinPath(db.Source, entry.Filepath)
+	u, err := url.JoinPath(db.Source, entry.Filepath)
 	if err != nil {
 		return "", err
 	}
-	resp, err := http.Get(URL)
-	if err != nil {
-		return "", err
-	}
-	defer resp.Body.Close()
 
-	err = os.MkdirAll("/var/cache/bpm/fetched/", 0755)
+	// Download package from url
+	err = downloadFile(u, path.Join("/var/cache/bpm/fetched/", path.Base(entry.Filepath)), 0644)
 	if err != nil {
 		return "", err
 	}
-	out, err := os.Create("/var/cache/bpm/fetched/" + path.Base(entry.Filepath))
-	if err != nil {
-		return "", err
-	}
-	defer out.Close()
 
-	_, err = io.Copy(out, resp.Body)
-	return "/var/cache/bpm/fetched/" + path.Base(entry.Filepath), nil
+	return path.Join("/var/cache/bpm/fetched/", path.Base(entry.Filepath)), nil
 }

src/bpmlib/general.go

@@ -164,14 +164,14 @@ func InstallPackages(rootDir string, forceInstallationReason InstallationReason,
 	if rootDir != "/" {
 		sourcePackages := make([]string, 0)
 		for _, action := range operation.Actions {
-			switch action.(type) {
+			switch action := action.(type) {
 			case *InstallPackageAction:
-				if action.(*InstallPackageAction).BpmPackage.PkgInfo.Type == "source" {
-					sourcePackages = append(sourcePackages, action.(*InstallPackageAction).BpmPackage.PkgInfo.Name)
+				if action.BpmPackage.PkgInfo.Type == "source" {
+					sourcePackages = append(sourcePackages, action.BpmPackage.PkgInfo.Name)
 				}
 			case *FetchPackageAction:
-				if action.(*FetchPackageAction).DatabaseEntry.Info.Type == "source" {
-					sourcePackages = append(sourcePackages, action.(*FetchPackageAction).DatabaseEntry.Info.Name)
+				if action.DatabaseEntry.Info.Type == "source" {
+					sourcePackages = append(sourcePackages, action.DatabaseEntry.Info.Name)
 				}
 			}
 		}

src/bpmlib/installed_packages.go

@@ -1,7 +1,6 @@
 package bpmlib
 
 import (
-	"errors"
 	"fmt"
 	"os"
 	"path"
@@ -169,14 +168,11 @@ func GetAllPackageFiles(rootDir string, excludePackages ...string) (map[string][
 		}
 		bpmpkg := GetPackage(pkgName, rootDir)
 		if bpmpkg == nil {
-			return nil, errors.New(fmt.Sprintf("could not get BPM package (%s)", pkgName))
+			return nil, fmt.Errorf("could not get BPM package (%s)", pkgName)
 		}
 		for _, entry := range bpmpkg.PkgFiles {
-			if _, ok := ret[entry.Path]; ok {
 			ret[entry.Path] = append(ret[entry.Path], bpmpkg)
-			} else {
-				ret[entry.Path] = []*BPMPackage{bpmpkg}
-			}
+
 		}
 	}
 

src/bpmlib/net.go

@@ -0,0 +1,61 @@
+package bpmlib
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path"
+	"strings"
+)
+
+func retrieveUrlData(u string) ([]byte, error) {
+	resp, err := http.Get(u)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	// Load data into byte buffer
+	buffer, err := io.ReadAll(resp.Body)
+
+	return buffer, nil
+}
+
+func downloadFile(u, filepath string, perm os.FileMode) error {
+	if strings.HasSuffix(filepath, "/") {
+		return fmt.Errorf("Filepath must not end in '/'")
+	}
+
+	data, err := retrieveUrlData(u)
+	if err != nil {
+		return err
+	}
+
+	// Create parent directories
+	err = os.MkdirAll(path.Dir(filepath), 0755)
+	if err != nil {
+		return err
+	}
+
+	// Create file
+	file, err := os.Create(filepath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	// Copy data
+	_, err = file.Write(data)
+	if err != nil {
+		return err
+	}
+
+	// Set file permissions
+	err = file.Chmod(perm)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

src/bpmlib/packages.go

@@ -26,13 +26,14 @@ type BPMPackage struct {
 }
 
 type PackageInfo struct {
-	Name            string         `yaml:"name,omitempty"`
-	Description     string         `yaml:"description,omitempty"`
-	Version         string         `yaml:"version,omitempty"`
+	Name            string            `yaml:"name"`
+	Description     string            `yaml:"description"`
+	Version         string            `yaml:"version"`
 	Revision        int               `yaml:"revision,omitempty"`
 	Url             string            `yaml:"url,omitempty"`
 	License         string            `yaml:"license,omitempty"`
 	Arch            string            `yaml:"architecture,omitempty"`
+	OutputArch      string            `yaml:"output_architecture,omitempty"`
 	Type            string            `yaml:"type,omitempty"`
 	Keep            []string          `yaml:"keep,omitempty"`
 	Depends         []string          `yaml:"depends,omitempty"`
@@ -41,9 +42,21 @@ type PackageInfo struct {
 	Conflicts       []string          `yaml:"conflicts,omitempty"`
 	Replaces        []string          `yaml:"replaces,omitempty"`
 	Provides        []string          `yaml:"provides,omitempty"`
+	Downloads       []PackageDownload `yaml:"downloads,omitempty"`
 	SplitPackages   []*PackageInfo    `yaml:"split_packages,omitempty"`
 }
 
+type PackageDownload struct {
+	Url                    string `yaml:"url"`
+	Type                   string `yaml:"type"`
+	NoExtract              bool   `yaml:"no_extract"`
+	ExtractToBPMSource     bool   `yaml:"extract_to_bpm_source"`
+	ExtractStripComponents int    `yaml:"extract_strip_components"`
+	GitBranch              string `yaml:"git_branch"`
+	Filepath               string `yaml:"filepath,omitempty"`
+	Checksum               string `yaml:"checksum"`
+}
+
 type PackageFileEntry struct {
 	Path        string
 	OctalPerms  uint32
@@ -177,10 +190,10 @@ func ReadPackage(filename string) (*BPMPackage, error) {
 	}
 
 	file, err := os.Open(filename)
-	defer file.Close()
 	if err != nil {
 		return nil, err
 	}
+	defer file.Close()
 
 	tr := tar.NewReader(file)
 	for {
@@ -303,14 +316,6 @@ func ReadPackageScripts(filename string) (map[string]string, error) {
 	return ret, nil
 }
 
-type packageOperation uint8
-
-const (
-	packageOperationInstall packageOperation = 0
-	packageOperationUpdate                   = 1
-	packageOperationRemove                   = 2
-)
-
 func executePackageScript(pkg, rootDir string, verbose bool, packageScript string) error {
 	var bpmpkg *BPMPackage
 	var err error
@@ -420,6 +425,7 @@ func ReadPackageInfo(contents string) (*PackageInfo, error) {
 		Url:             "",
 		License:         "",
 		Arch:            "",
+		OutputArch:      GetArch(),
 		Type:            "",
 		Keep:            make([]string, 0),
 		Depends:         make([]string, 0),
@@ -428,6 +434,7 @@ func ReadPackageInfo(contents string) (*PackageInfo, error) {
 		Conflicts:       make([]string, 0),
 		Replaces:        make([]string, 0),
 		Provides:        make([]string, 0),
+		Downloads:       make([]PackageDownload, 0),
 		SplitPackages:   make([]*PackageInfo, 0),
 	}
 	err := yaml.Unmarshal([]byte(contents), &pkgInfo)