Merge branch 'improve_bpm_structure' into 'master'

Switch to new BPM file structure

See merge request bubble-package-manager/bpm!8

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2024 CapCreeperGR
+Copyright (c) 2024 EnumDev
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -0,0 +1,38 @@
+ifeq ($(PREFIX),)
+    PREFIX := /usr/local
+endif
+ifeq ($(BINDIR),)
+    BINDIR := $(PREFIX)/bin
+endif
+ifeq ($(SYSCONFDIR),)
+    SYSCONFDIR := $(PREFIX)/etc
+endif
+ifeq ($(GO),)
+    GO := $(shell type -a -P go | head -n 1)
+endif
+
+build:
+	mkdir -p build
+	$(GO) build -ldflags "-w" -o build/bpm gitlab.com/bubble-package-manager/bpm
+
+install: build/bpm config/
+	mkdir -p $(DESTDIR)$(BINDIR)
+	mkdir -p $(DESTDIR)$(SYSCONFDIR)
+	cp build/bpm $(DESTDIR)$(BINDIR)/bpm
+	cp config/bpm.conf $(DESTDIR)$(SYSCONFDIR)/bpm.conf
+
+compress: build/bpm config/
+	mkdir -p bpm/$(BINDIR)
+	mkdir -p bpm/$(SYSCONFDIR)
+	cp build/bpm bpm/$(BINDIR)/bpm
+	cp config/bpm.conf bpm/$(SYSCONFDIR)/bpm.conf
+	tar --owner=root --group=root -czf bpm.tar.gz bpm
+	rm -r bpm
+
+run: build/bpm
+	build/bpm
+
+clean:
+	rm -r build/
+
+.PHONY: build

README.md

@@ -15,15 +15,16 @@ BPM is still in very early development. It should not be installed on any system
 
 ## Build from source
 
-BPM requires go 1.22 or above to be built properly
+- Download `go` from your package manager or from the go website
-
+- Download `make` from your package manager
-```sh
+- Run the following command to compile the project
-git clone https://gitlab.com/bubble-package-manager/bpm.git
+```
-cd bpm
+make
-mkdir build
+```
-go build -o ./build/bpm capcreepergr.me/bpm
+- Run the following command to install stormfetch into your system. You may also append a DESTDIR variable at the end of this line if you wish to install in a different location
+```
+make install PREFIX=/usr SYSCONFDIR=/etc
 ```
-You are now able to copy the executable in the ./build directory in a VM or container's /usr/bin/ directory
 
 ## How to use
 

bpm_utils/config.go

@@ -1,34 +0,0 @@
-package bpm_utils
-
-import (
-	"gopkg.in/yaml.v3"
-	"os"
-)
-
-type BPMConfigStruct struct {
-	CompilationEnv    []string `yaml:"compilation_env"`
-	SilentCompilation bool     `yaml:"silent_compilation"`
-	BinaryOutputDir   string   `yaml:"binary_output_dir"`
-	CompilationDir    string   `yaml:"compilation_dir"`
-}
-
-var BPMConfig BPMConfigStruct = BPMConfigStruct{
-	CompilationEnv:    make([]string, 0),
-	SilentCompilation: false,
-	BinaryOutputDir:   "/var/lib/bpm/compiled/",
-	CompilationDir:    "/var/tmp/",
-}
-
-func ReadConfig() {
-	if _, err := os.Stat("/etc/bpm.conf"); os.IsNotExist(err) {
-		return
-	}
-	bytes, err := os.ReadFile("/etc/bpm.conf")
-	if err != nil {
-		return
-	}
-	err = yaml.Unmarshal(bytes, &BPMConfig)
-	if err != nil {
-		return
-	}
-}

bpm_utils/general_utils.go

@@ -1,58 +0,0 @@
-package bpm_utils
-
-import (
-	"io"
-	"os"
-	"os/exec"
-	"strings"
-)
-
-func GetArch() string {
-	output, err := exec.Command("/usr/bin/uname", "-m").Output()
-	if err != nil {
-		return ""
-	}
-	return strings.TrimSpace(string(output))
-}
-
-func copyFileContents(src, dst string) (err error) {
-	in, err := os.Open(src)
-	if err != nil {
-		return
-	}
-	defer in.Close()
-	out, err := os.Create(dst)
-	if err != nil {
-		return
-	}
-	defer func() {
-		cerr := out.Close()
-		if err == nil {
-			err = cerr
-		}
-	}()
-	if _, err = io.Copy(out, in); err != nil {
-		return
-	}
-	err = out.Sync()
-	return
-}
-
-func stringSliceRemove(s []string, r string) []string {
-	for i, v := range s {
-		if v == r {
-			return append(s[:i], s[i+1:]...)
-		}
-	}
-	return s
-}
-
-func stringSliceRemoveEmpty(s []string) []string {
-	var r []string
-	for _, str := range s {
-		if str != "" {
-			r = append(r, str)
-		}
-	}
-	return r
-}

config/bpm.conf

@@ -0,0 +1,8 @@
+compilation_env: []
+silent_compilation: false
+compilation_dir: "/var/tmp/"
+binary_output_dir: "/var/lib/bpm/compiled/"
+repositories:
+  - name: example-repository
+    source: https://my-repo.xyz/
+    disabled: true

go.mod

@@ -1,5 +1,9 @@
-module capcreepergr.me/bpm
+module gitlab.com/bubble-package-manager/bpm
 
 go 1.22
 
-require gopkg.in/yaml.v3 v3.0.1 // indirect
+require (
+	github.com/elliotchance/orderedmap/v2 v2.4.0 // indirect
+	github.com/knqyf263/go-rpm-version v0.0.0-20240918084003-2afd7dc6a38f // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -1,3 +1,9 @@
+github.com/elliotchance/orderedmap/v2 v2.4.0 h1:6tUmMwD9F998FNpwFxA5E6NQvSpk2PVw7RKsVq3+2Cw=
+github.com/elliotchance/orderedmap/v2 v2.4.0/go.mod h1:85lZyVbpGaGvHvnKa7Qhx7zncAdBIBq6u56Hb1PRU5Q=
+github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
+github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
+github.com/knqyf263/go-rpm-version v0.0.0-20240918084003-2afd7dc6a38f h1:xt29M2T6STgldg+WEP51gGePQCsQvklmP2eIhPIBK3g=
+github.com/knqyf263/go-rpm-version v0.0.0-20240918084003-2afd7dc6a38f/go.mod h1:i4sF0l1fFnY1aiw08QQSwVAFxHEm311Me3WsU/X7nL0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -2,9 +2,9 @@ package main
 
 import (
 	"bufio"
-	"capcreepergr.me/bpm/bpm_utils"
 	"flag"
 	"fmt"
+	"gitlab.com/bubble-package-manager/bpm/utils"
 	"log"
 	"os"
 	"path/filepath"
@@ -12,28 +12,33 @@ import (
 	"strings"
 )
 
-/* ---BPM | Bubble Package Manager--- */
+/* -------------BPM | Bubble Package Manager-------------- */
-/*        Made By CapCreeperGR        */
+/*        Made By EnumDev (Previously CapCreeperGR)        */
 /*             A simple-to-use package manager             */
-/* ---------------------------------- */
+/* ------------------------------------------------------- */
 
-var bpmVer = "0.3.1"
+var bpmVer = "0.5.0"
 
 var subcommand = "help"
 var subcommandArgs []string
 
 // Flags
 var rootDir = "/"
+var verbose = false
 var yesAll = false
 var buildSource = false
 var skipCheck = false
 var keepTempDir = false
-var forceInstall = false
+var force = false
 var pkgListNumbers = false
 var pkgListNames = false
+var reinstall = false
+var reinstallAll = false
+var noOptional = false
+var nosync = true
 
 func main() {
-	bpm_utils.ReadConfig()
+	utils.ReadConfig()
 	resolveFlags()
 	resolveCommand()
 }
@@ -41,11 +46,14 @@ func main() {
 type commandType uint8
 
 const (
-	help commandType = iota
+	_default commandType = iota
-	version
+	help
 	info
 	list
+	search
 	install
+	update
+	sync
 	remove
 	file
 )
@@ -53,13 +61,19 @@ const (
 func getCommandType() commandType {
 	switch subcommand {
 	case "version":
-		return version
+		return _default
 	case "info":
 		return info
 	case "list":
 		return list
+	case "search":
+		return search
 	case "install":
 		return install
+	case "update":
+		return update
+	case "sync":
+		return sync
 	case "remove":
 		return remove
 	case "file":
@@ -71,7 +85,7 @@ func getCommandType() commandType {
 
 func resolveCommand() {
 	switch getCommandType() {
-	case version:
+	case _default:
 		fmt.Println("Bubble Package Manager (BPM)")
 		fmt.Println("Version: " + bpmVer)
 	case info:
@@ -81,20 +95,21 @@ func resolveCommand() {
 			return
 		}
 		for n, pkg := range packages {
-			info := bpm_utils.GetPackageInfo(pkg, rootDir, false)
+			var info *utils.PackageInfo
+			info = utils.GetPackageInfo(pkg, rootDir)
 			if info == nil {
-				fmt.Printf("Package (%s) could not be found\n", pkg)
+				log.Fatalf("Error: package (%s) is not installed\n", pkg)
-				continue
 			}
-			fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*info, true))
+			fmt.Println("----------------")
+			fmt.Println(utils.CreateReadableInfo(true, true, true, info, rootDir))
 			if n == len(packages)-1 {
 				fmt.Println("----------------")
 			}
 		}
 	case list:
-		packages, err := bpm_utils.GetInstalledPackages(rootDir)
+		packages, err := utils.GetInstalledPackages(rootDir)
 		if err != nil {
-			log.Fatalf("Could not get installed packages\nError: %s", err.Error())
+			log.Fatalf("Error: could not get installed packages: %s", err.Error())
 			return
 		}
 		if pkgListNumbers {
@@ -109,154 +124,275 @@ func resolveCommand() {
 				return
 			}
 			for n, pkg := range packages {
-				info := bpm_utils.GetPackageInfo(pkg, rootDir, false)
+				info := utils.GetPackageInfo(pkg, rootDir)
 				if info == nil {
 					fmt.Printf("Package (%s) could not be found\n", pkg)
 					continue
 				}
-				fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*info, true))
+				fmt.Println("----------------\n" + utils.CreateReadableInfo(true, true, true, info, rootDir))
 				if n == len(packages)-1 {
 					fmt.Println("----------------")
 				}
 			}
 		}
+	case search:
+		searchTerms := subcommandArgs
+		if len(searchTerms) == 0 {
+			log.Fatalf("Error: no search terms given")
+		}
+
+		for _, term := range searchTerms {
+			nameResults := make([]*utils.PackageInfo, 0)
+			descResults := make([]*utils.PackageInfo, 0)
+			for _, repo := range utils.BPMConfig.Repositories {
+				for _, entry := range repo.Entries {
+					if strings.Contains(entry.Info.Name, term) {
+						nameResults = append(nameResults, entry.Info)
+					} else if strings.Contains(entry.Info.Description, term) {
+						descResults = append(descResults, entry.Info)
+					}
+				}
+			}
+			results := append(nameResults, descResults...)
+			if len(results) == 0 {
+				log.Fatalf("Error: no results for term (%s) were found\n", term)
+			}
+			fmt.Printf("Results for term (%s)\n", term)
+			for i, result := range results {
+				fmt.Println("----------------")
+				fmt.Printf("%d) %s: %s (%s)\n", i+1, result.Name, result.Description, result.GetFullVersion())
+			}
+		}
 	case install:
 		if os.Getuid() != 0 {
-			fmt.Println("This subcommand needs to be run with superuser permissions")
+			log.Fatalf("Error: this subcommand needs to be run with superuser permissions")
-			os.Exit(0)
 		}
-		files := subcommandArgs
+		pkgs := subcommandArgs
-		if len(files) == 0 {
+		if len(pkgs) == 0 {
-			fmt.Println("No files were given to install")
+			fmt.Println("No packages or files were given to install")
 			return
 		}
-		for _, file := range files {
+
-			pkgInfo, err := bpm_utils.ReadPackage(file)
+		operation := utils.BPMOperation{
+			Actions:           make([]utils.OperationAction, 0),
+			UnresolvedDepends: make([]string, 0),
+			RootDir:           rootDir,
+		}
+
+		// Search for packages
+		for _, pkg := range pkgs {
+			if stat, err := os.Stat(pkg); err == nil && !stat.IsDir() {
+				bpmpkg, err := utils.ReadPackage(pkg)
 				if err != nil {
-				log.Fatalf("Could not read package\nError: %s\n", err)
+					log.Fatalf("Error: could not read package: %s\n", err)
 				}
-			fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*pkgInfo, true))
+				if !reinstall && utils.IsPackageInstalled(bpmpkg.PkgInfo.Name, rootDir) && utils.GetPackageInfo(bpmpkg.PkgInfo.Name, rootDir).GetFullVersion() == bpmpkg.PkgInfo.GetFullVersion() {
-			fmt.Println("----------------")
-			verb := "install"
-			if pkgInfo.Type == "source" {
-				if _, err := os.Stat("/bin/fakeroot"); os.IsNotExist(err) {
-					fmt.Printf("Skipping... cannot %s package (%s) due to fakeroot not being installed")
 					continue
 				}
-				verb = "build"
+				operation.Actions = append(operation.Actions, &utils.InstallPackageAction{
-			}
+					File:         pkg,
-			if !forceInstall {
+					IsDependency: false,
-				if pkgInfo.Arch != "any" && pkgInfo.Arch != bpm_utils.GetArch() {
+					BpmPackage:   bpmpkg,
-					fmt.Printf("skipping... cannot %s a package with a different architecture\n", verb)
+				})
-					continue
+			} else {
-				}
+				entry, _, err := utils.GetRepositoryEntry(pkg)
-				if unresolved := bpm_utils.CheckDependencies(pkgInfo, rootDir); len(unresolved) != 0 {
-					fmt.Printf("skipping... cannot %s package (%s) due to missing dependencies: %s\n", verb, pkgInfo.Name, strings.Join(unresolved, ", "))
-					continue
-				}
-				if pkgInfo.Type == "source" {
-					if unresolved := bpm_utils.CheckMakeDependencies(pkgInfo, "/"); len(unresolved) != 0 {
-						fmt.Printf("skipping... cannot %s package (%s) due to missing make dependencies: %s\n", verb, pkgInfo.Name, strings.Join(unresolved, ", "))
-						continue
-					}
-				}
-			}
-			if rootDir != "/" {
-				fmt.Println("Warning: Operating in " + rootDir)
-			}
-			if !yesAll {
-				reader := bufio.NewReader(os.Stdin)
-				if pkgInfo.Type == "source" {
-					fmt.Print("Would you like to view the source.sh file of this package? [Y\\n] ")
-					text, _ := reader.ReadString('\n')
-					if strings.TrimSpace(strings.ToLower(text)) != "n" && strings.TrimSpace(strings.ToLower(text)) != "no" {
-						script, err := bpm_utils.GetSourceScript(file)
 				if err != nil {
-							log.Fatalf("Could not read source script\nError: %s\n", err)
+					log.Fatalf("Error: could not find package (%s) in any repository\n", pkg)
 				}
-						fmt.Println(script)
+				if !reinstall && utils.IsPackageInstalled(entry.Info.Name, rootDir) && utils.GetPackageInfo(entry.Info.Name, rootDir).GetFullVersion() == entry.Info.GetFullVersion() {
-						fmt.Println("-------EOF-------")
-					}
-				}
-			}
-			if bpm_utils.IsPackageInstalled(pkgInfo.Name, rootDir) {
-				if !yesAll {
-					installedInfo := bpm_utils.GetPackageInfo(pkgInfo.Name, rootDir, false)
-					if strings.Compare(pkgInfo.Version, installedInfo.Version) > 0 {
-						fmt.Println("This file contains a newer version of this package (" + installedInfo.Version + " -> " + pkgInfo.Version + ")")
-						fmt.Print("Do you wish to update this package? [y\\N] ")
-					} else if strings.Compare(pkgInfo.Version, installedInfo.Version) < 0 {
-						fmt.Println("This file contains an older version of this package (" + installedInfo.Version + " -> " + pkgInfo.Version + ")")
-						fmt.Print("Do you wish to downgrade this package? (Not recommended) [y\\N] ")
-					} else if strings.Compare(pkgInfo.Version, installedInfo.Version) == 0 {
-						fmt.Println("This package is already installed on the system and is up to date")
-						fmt.Printf("Do you wish to re%s this package? [y\\N] ", verb)
-					}
-					reader := bufio.NewReader(os.Stdin)
-					text, _ := reader.ReadString('\n')
-					if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
-						fmt.Printf("Skipping package (%s)...\n", pkgInfo.Name)
 					continue
 				}
-				}
+				operation.Actions = append(operation.Actions, &utils.FetchPackageAction{
-			} else if !yesAll {
+					IsDependency:    false,
-				reader := bufio.NewReader(os.Stdin)
+					RepositoryEntry: entry,
-				fmt.Printf("Do you wish to %s this package? [y\\N] ", verb)
+				})
-				text, _ := reader.ReadString('\n')
-				if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
-					fmt.Printf("Skipping package (%s)...\n", pkgInfo.Name)
-					continue
 			}
 		}
 
-			err = bpm_utils.InstallPackage(file, rootDir, forceInstall, buildSource, skipCheck, keepTempDir)
+		// Resolve dependencies
+		err := operation.ResolveDependencies(reinstallAll, !noOptional, verbose)
 		if err != nil {
-				if pkgInfo.Type == "source" && keepTempDir {
+			log.Fatalf("Error: could not resolve dependencies: %s\n", err)
-					fmt.Println("BPM temp directory was created at /var/tmp/bpm_source-" + pkgInfo.Name)
 		}
-				log.Fatalf("Could not install package\nError: %s\n", err)
+		if len(operation.UnresolvedDepends) != 0 {
-			}
+			if !force {
-			fmt.Printf("Package (%s) was successfully installed!\n", pkgInfo.Name)
+				log.Fatalf("Error: the following dependencies could not be found in any repositories: %s\n", strings.Join(operation.UnresolvedDepends, ", "))
-			if pkgInfo.Type == "source" && keepTempDir {
+			} else {
-				fmt.Println("** It is recommended you delete the temporary bpm folder in /var/tmp **")
+				log.Println("Warning: The following dependencies could not be found in any repositories: " + strings.Join(operation.UnresolvedDepends, ", "))
 			}
 		}
+
+		// Show operation summary
+		operation.ShowOperationSummary()
+
+		// Confirmation Prompt
+		if !yesAll {
+			reader := bufio.NewReader(os.Stdin)
+			if len(operation.Actions) == 1 {
+				fmt.Printf("Do you wish to install this package? [y\\N] ")
+			} else {
+				fmt.Printf("Do you wish to install these %d packages? [y\\N] ", len(operation.Actions))
+			}
+
+			text, _ := reader.ReadString('\n')
+			if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
+				fmt.Println("Cancelling package installation...")
+				os.Exit(1)
+			}
+		}
+
+		// Execute operation
+		err = operation.Execute(verbose, force)
+		if err != nil {
+			log.Fatalf("Error: could not complete operation: %s\n", err)
+		}
+	case update:
+		if os.Getuid() != 0 {
+			log.Fatalf("Error: this subcommand needs to be run with superuser permissions")
+		}
+
+		// Sync repositories
+		if !nosync {
+			for _, repo := range utils.BPMConfig.Repositories {
+				fmt.Printf("Fetching package database for repository (%s)...\n", repo.Name)
+				err := repo.SyncLocalDatabase()
+				if err != nil {
+					log.Fatalf("Error: could not sync local database for repository (%s): %s\n", repo.Name, err)
+				}
+			}
+			fmt.Println("All package databases synced successfully!")
+		}
+
+		utils.ReadConfig()
+
+		// Get installed packages and check for updates
+		pkgs, err := utils.GetInstalledPackages(rootDir)
+		if err != nil {
+			log.Fatalf("Error: could not get installed packages: %s\n", err)
+		}
+
+		operation := utils.BPMOperation{
+			Actions:           make([]utils.OperationAction, 0),
+			UnresolvedDepends: make([]string, 0),
+			RootDir:           rootDir,
+		}
+
+		// Search for packages
+		for _, pkg := range pkgs {
+			entry, _, err := utils.GetRepositoryEntry(pkg)
+			if err != nil {
+				continue
+			}
+			installedInfo := utils.GetPackageInfo(pkg, rootDir)
+			if installedInfo == nil {
+				log.Fatalf("Error: could not get package info for (%s)\n", pkg)
+			} else {
+				comparison := utils.ComparePackageVersions(*entry.Info, *installedInfo)
+				if comparison > 0 || reinstall {
+					operation.Actions = append(operation.Actions, &utils.FetchPackageAction{
+						IsDependency:    false,
+						RepositoryEntry: entry,
+					})
+				}
+			}
+		}
+
+		// Check for new dependencies in updated packages
+		err = operation.ResolveDependencies(reinstallAll, !noOptional, verbose)
+		if err != nil {
+			log.Fatalf("Error: could not resolve dependencies: %s\n", err)
+		}
+		if len(operation.UnresolvedDepends) != 0 {
+			if !force {
+				log.Fatalf("Error: the following dependencies could not be found in any repositories: %s\n", strings.Join(operation.UnresolvedDepends, ", "))
+			} else {
+				log.Println("Warning: The following dependencies could not be found in any repositories: " + strings.Join(operation.UnresolvedDepends, ", "))
+			}
+		}
+
+		// Show operation summary
+		operation.ShowOperationSummary()
+
+		// Confirmation Prompt
+		if !yesAll {
+			fmt.Printf("Are you sure you wish to update all %d packages? [y\\N] ", len(operation.Actions))
+			reader := bufio.NewReader(os.Stdin)
+			text, _ := reader.ReadString('\n')
+			if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
+				fmt.Println("Cancelling package update...")
+				os.Exit(1)
+			}
+		}
+
+		// Execute operation
+		err = operation.Execute(verbose, force)
+		if err != nil {
+			log.Fatalf("Error: could not complete operation: %s\n", err)
+		}
+	case sync:
+		if os.Getuid() != 0 {
+			log.Fatalf("Error: this subcommand needs to be run with superuser permissions")
+		}
+		if !yesAll {
+			fmt.Printf("Are you sure you wish to sync all databases? [y\\N] ")
+			reader := bufio.NewReader(os.Stdin)
+			text, _ := reader.ReadString('\n')
+			if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
+				fmt.Println("Cancelling database synchronization...")
+				os.Exit(1)
+			}
+		}
+		for _, repo := range utils.BPMConfig.Repositories {
+			fmt.Printf("Fetching package database for repository (%s)...\n", repo.Name)
+			err := repo.SyncLocalDatabase()
+			if err != nil {
+				log.Fatalf("Error: could not sync local database for repository (%s): %s\n", repo.Name, err)
+			}
+		}
+		fmt.Println("All package databases synced successfully!")
 	case remove:
 		if os.Getuid() != 0 {
-			fmt.Println("This subcommand needs to be run with superuser permissions")
+			log.Fatalf("Error: this subcommand needs to be run with superuser permissions")
-			os.Exit(0)
 		}
 		packages := subcommandArgs
 		if len(packages) == 0 {
 			fmt.Println("No packages were given")
 			return
 		}
+
+		operation := &utils.BPMOperation{
+			Actions:           make([]utils.OperationAction, 0),
+			UnresolvedDepends: make([]string, 0),
+			RootDir:           rootDir,
+		}
+
+		// Search for packages
 		for _, pkg := range packages {
-			pkgInfo := bpm_utils.GetPackageInfo(pkg, rootDir, false)
+			bpmpkg := utils.GetPackage(pkg, rootDir)
-			if pkgInfo == nil {
+			if bpmpkg == nil {
-				fmt.Printf("Package (%s) could not be found\n", pkg)
+				log.Fatalf("Error: package (%s) could not be found\n", pkg)
-				continue
 			}
-			fmt.Print("----------------\n" + bpm_utils.CreateInfoFile(*pkgInfo, true))
+			operation.Actions = append(operation.Actions, &utils.RemovePackageAction{BpmPackage: bpmpkg})
-			fmt.Println("----------------")
-			if rootDir != "/" {
-				fmt.Println("Warning: Operating in " + rootDir)
 		}
+
+		// Show operation summary
+		operation.ShowOperationSummary()
+
+		// Confirmation Prompt
 		if !yesAll {
+			fmt.Printf("Are you sure you wish to remove all %d packages? [y\\N] ", len(operation.Actions))
 			reader := bufio.NewReader(os.Stdin)
-				fmt.Print("Do you wish to remove this package? [y\\N] ")
 			text, _ := reader.ReadString('\n')
 			if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
-					fmt.Printf("Skipping package (%s)...\n", pkgInfo.Name)
+				fmt.Println("Cancelling package removal...")
-					continue
+				os.Exit(1)
 			}
 		}
-			err := bpm_utils.RemovePackage(pkg, rootDir)
 
+		// Execute operation
+		err := operation.Execute(verbose, force)
 		if err != nil {
-				log.Fatalf("Could not remove package\nError: %s\n", err)
+			log.Fatalf("Error: could not complete operation: %s\n", err)
-			}
-			fmt.Printf("Package (%s) was successfully removed!\n", pkgInfo.Name)
 		}
 	case file:
 		files := subcommandArgs
@@ -267,23 +403,23 @@ func resolveCommand() {
 		for _, file := range files {
 			absFile, err := filepath.Abs(file)
 			if err != nil {
-				log.Fatalf("Could not get absolute path of %s", file)
+				log.Fatalf("Error: could not get absolute path of file (%s)\n", file)
 			}
 			stat, err := os.Stat(absFile)
 			if os.IsNotExist(err) {
-				log.Fatalf(absFile + " does not exist!")
+				log.Fatalf("Error: file (%s) does not exist!\n", absFile)
 			}
-			pkgs, err := bpm_utils.GetInstalledPackages(rootDir)
+			pkgs, err := utils.GetInstalledPackages(rootDir)
 			if err != nil {
-				log.Fatalf("Could not get installed packages. Error %s", err.Error())
+				log.Fatalf("Error: could not get installed packages: %s\n", err.Error())
 			}
 
 			if !strings.HasPrefix(absFile, rootDir) {
-				log.Fatalf("Could not get relative path of %s to root path", absFile)
+				log.Fatalf("Error: could not get path of file (%s) relative to root path", absFile)
 			}
 			absFile, err = filepath.Rel(rootDir, absFile)
 			if err != nil {
-				log.Fatalf("Could not get relative path of %s to root path", absFile)
+				log.Fatalf("Error: could not get path of file (%s) relative to root path", absFile)
 			}
 			absFile = strings.TrimPrefix(absFile, "/")
 			if stat.IsDir() {
@@ -292,7 +428,9 @@ func resolveCommand() {
 
 			var pkgList []string
 			for _, pkg := range pkgs {
-				if slices.Contains(bpm_utils.GetPackageFiles(pkg, rootDir), absFile) {
+				if slices.ContainsFunc(utils.GetPackageFiles(pkg, rootDir), func(entry *utils.PackageFileEntry) bool {
+					return entry.Path == absFile
+				}) {
 					pkgList = append(pkgList, pkg)
 				}
 			}
@@ -316,21 +454,38 @@ func printHelp() {
 	fmt.Println("-> flags will be read if passed right after the subcommand otherwise they will be read as subcommand arguments")
 	fmt.Println("\033[1m---- Command List ----\033[0m")
 	fmt.Println("-> bpm version | shows information on the installed version of bpm")
-	fmt.Println("-> bpm info [-R] | shows information on an installed package")
+	fmt.Println("-> bpm info [-R] <packages...> | shows information on an installed package")
 	fmt.Println("       -R=<path> lets you define the root path which will be used")
 	fmt.Println("-> bpm list [-R, -c, -n] | lists all installed packages")
 	fmt.Println("       -R=<path> lets you define the root path which will be used")
 	fmt.Println("       -c lists the amount of installed packages")
 	fmt.Println("       -n lists only the names of installed packages")
-	fmt.Println("-> bpm install [-R, -y, -f, -o, -c, -b, -k] <files...> | installs the following files")
+	fmt.Println("-> bpm search <search terms...> | Searches for packages through declared repositories")
+	fmt.Println("-> bpm install [-R, -v, -y, -f, -o, -c, -b, -k, --reinstall, --reinstall-all, --no-optional] <packages...> | installs the following files")
 	fmt.Println("       -R=<path> lets you define the root path which will be used")
+	fmt.Println("       -v Show additional information about what BPM is doing")
 	fmt.Println("       -y skips the confirmation prompt")
-	fmt.Println("       -f skips dependency and architecture checking")
+	fmt.Println("       -f skips dependency, conflict and architecture checking")
 	fmt.Println("       -o=<path> set the binary package output directory (defaults to /var/lib/bpm/compiled)")
 	fmt.Println("       -c=<path> set the compilation directory (defaults to /var/tmp)")
 	fmt.Println("       -b creates a binary package from a source package after compilation and saves it in the binary package output directory")
 	fmt.Println("       -k keeps the compilation directory created by BPM after source package installation")
-	fmt.Println("-> bpm remove [-R, -y] <packages...> | removes the following packages")
+	fmt.Println("       --reinstall Reinstalls packages even if they do not have a newer version available")
+	fmt.Println("       --reinstall-all Same as --reinstall but also reinstalls dependencies")
+	fmt.Println("       --no-optional Prevents installation of optional dependencies")
+	fmt.Println("-> bpm update [-R, -v, -y, -f, --reinstall, --no-sync] | updates all packages that are available in the repositories")
+	fmt.Println("       -R=<path> lets you define the root path which will be used")
+	fmt.Println("       -v Show additional information about what BPM is doing")
+	fmt.Println("       -y skips the confirmation prompt")
+	fmt.Println("       -f skips dependency, conflict and architecture checking")
+	fmt.Println("       --reinstall Fetches and reinstalls all packages even if they do not have a newer version available")
+	fmt.Println("       --no-sync Skips package database syncing")
+	fmt.Println("-> bpm sync [-R, -v, -y] | Syncs package databases without updating packages")
+	fmt.Println("       -R=<path> lets you define the root path which will be used")
+	fmt.Println("       -v Show additional information about what BPM is doing")
+	fmt.Println("       -y skips the confirmation prompt")
+	fmt.Println("-> bpm remove [-R, -v, -y] <packages...> | removes the following packages")
+	fmt.Println("       -v Show additional information about what BPM is doing")
 	fmt.Println("       -R=<path> lets you define the root path which will be used")
 	fmt.Println("       -y skips the confirmation prompt")
 	fmt.Println("-> bpm file [-R] <files...> | shows what packages the following packages are managed by")
@@ -352,17 +507,37 @@ func resolveFlags() {
 	// Install flags
 	installFlagSet := flag.NewFlagSet("Install flags", flag.ExitOnError)
 	installFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
+	installFlagSet.BoolVar(&verbose, "v", false, "Show additional information about what BPM is doing")
 	installFlagSet.BoolVar(&yesAll, "y", false, "Skip confirmation prompts")
-	installFlagSet.StringVar(&bpm_utils.BPMConfig.BinaryOutputDir, "o", bpm_utils.BPMConfig.BinaryOutputDir, "Set the binary output directory")
+	installFlagSet.StringVar(&utils.BPMConfig.BinaryOutputDir, "o", utils.BPMConfig.BinaryOutputDir, "Set the binary output directory")
-	installFlagSet.StringVar(&bpm_utils.BPMConfig.CompilationDir, "c", bpm_utils.BPMConfig.CompilationDir, "Set the compilation directory")
+	installFlagSet.StringVar(&utils.BPMConfig.CompilationDir, "c", utils.BPMConfig.CompilationDir, "Set the compilation directory")
 	installFlagSet.BoolVar(&buildSource, "b", false, "Build binary package from source package")
 	installFlagSet.BoolVar(&skipCheck, "s", false, "Skip check function during source compilation")
 	installFlagSet.BoolVar(&keepTempDir, "k", false, "Keep temporary directory after source compilation")
-	installFlagSet.BoolVar(&forceInstall, "f", false, "Force installation by skipping architecture and dependency resolution")
+	installFlagSet.BoolVar(&force, "f", false, "Force installation by skipping architecture and dependency resolution")
+	installFlagSet.BoolVar(&reinstall, "reinstall", false, "Reinstalls packages even if they do not have a newer version available")
+	installFlagSet.BoolVar(&reinstallAll, "reinstall-all", false, "Same as --reinstall but also reinstalls dependencies")
+	installFlagSet.BoolVar(&noOptional, "no-optional", false, "Prevents installation of optional dependencies")
 	installFlagSet.Usage = printHelp
+	// Update flags
+	updateFlagSet := flag.NewFlagSet("Update flags", flag.ExitOnError)
+	updateFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
+	updateFlagSet.BoolVar(&verbose, "v", false, "Show additional information about what BPM is doing")
+	updateFlagSet.BoolVar(&yesAll, "y", false, "Skip confirmation prompts")
+	updateFlagSet.BoolVar(&force, "f", false, "Force update by skipping architecture and dependency resolution")
+	updateFlagSet.BoolVar(&reinstall, "reinstall", false, "Fetches and reinstalls all packages even if they do not have a newer version available")
+	updateFlagSet.BoolVar(&nosync, "no-sync", false, "Skips package database syncing")
+	updateFlagSet.Usage = printHelp
+	// Sync flags
+	syncFlagSet := flag.NewFlagSet("Sync flags", flag.ExitOnError)
+	syncFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
+	syncFlagSet.BoolVar(&verbose, "v", false, "Show additional information about what BPM is doing")
+	syncFlagSet.BoolVar(&yesAll, "y", false, "Skip confirmation prompts")
+	syncFlagSet.Usage = printHelp
 	// Remove flags
 	removeFlagSet := flag.NewFlagSet("Remove flags", flag.ExitOnError)
 	removeFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
+	removeFlagSet.BoolVar(&verbose, "v", false, "Show additional information about what BPM is doing")
 	removeFlagSet.BoolVar(&yesAll, "y", false, "Skip confirmation prompts")
 	removeFlagSet.Usage = printHelp
 	// File flags
@@ -392,6 +567,18 @@ func resolveFlags() {
 				return
 			}
 			subcommandArgs = installFlagSet.Args()
+		} else if getCommandType() == update {
+			err := updateFlagSet.Parse(subcommandArgs)
+			if err != nil {
+				return
+			}
+			subcommandArgs = updateFlagSet.Args()
+		} else if getCommandType() == sync {
+			err := syncFlagSet.Parse(subcommandArgs)
+			if err != nil {
+				return
+			}
+			subcommandArgs = syncFlagSet.Args()
 		} else if getCommandType() == remove {
 			err := removeFlagSet.Parse(subcommandArgs)
 			if err != nil {
@@ -405,5 +592,8 @@ func resolveFlags() {
 			}
 			subcommandArgs = fileFlagSet.Args()
 		}
+		if reinstallAll {
+			reinstall = true
+		}
 	}
 }

utils/config.go

@@ -0,0 +1,49 @@
+package utils
+
+import (
+	"gopkg.in/yaml.v3"
+	"log"
+	"os"
+)
+
+type BPMConfigStruct struct {
+	CompilationEnv    []string      `yaml:"compilation_env"`
+	SilentCompilation bool          `yaml:"silent_compilation"`
+	BinaryOutputDir   string        `yaml:"binary_output_dir"`
+	CompilationDir    string        `yaml:"compilation_dir"`
+	Repositories      []*Repository `yaml:"repositories"`
+}
+
+var BPMConfig BPMConfigStruct
+
+func ReadConfig() {
+	if _, err := os.Stat("/etc/bpm.conf"); os.IsNotExist(err) {
+		log.Fatal(err)
+	}
+	bytes, err := os.ReadFile("/etc/bpm.conf")
+	if err != nil {
+		log.Fatal(err)
+	}
+	BPMConfig = BPMConfigStruct{
+		CompilationEnv:    make([]string, 0),
+		SilentCompilation: false,
+		BinaryOutputDir:   "/var/lib/bpm/compiled/",
+		CompilationDir:    "/var/tmp/",
+	}
+	err = yaml.Unmarshal(bytes, &BPMConfig)
+	if err != nil {
+		log.Fatal(err)
+	}
+	for i := len(BPMConfig.Repositories) - 1; i >= 0; i-- {
+		if BPMConfig.Repositories[i].Disabled != nil && *BPMConfig.Repositories[i].Disabled {
+			BPMConfig.Repositories = append(BPMConfig.Repositories[:i], BPMConfig.Repositories[i+1:]...)
+		}
+	}
+	for _, repo := range BPMConfig.Repositories {
+		repo.Entries = make(map[string]*RepositoryEntry)
+		err := repo.ReadLocalDatabase()
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+}

utils/extract_utils.go

@@ -0,0 +1,43 @@
+package utils
+
+import (
+	"archive/tar"
+	"errors"
+	"io"
+	"os"
+)
+
+type TarballFileReader struct {
+	tarReader *tar.Reader
+	file      *os.File
+}
+
+func ReadTarballContent(tarballPath, fileToExtract string) (*TarballFileReader, error) {
+	file, err := os.Open(tarballPath)
+	if err != nil {
+		return nil, err
+	}
+
+	tr := tar.NewReader(file)
+	for {
+		header, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, err
+		}
+		if header.Name == fileToExtract {
+			if header.Typeflag != tar.TypeReg {
+				return nil, errors.New("file to extract must be a regular file")
+			}
+
+			return &TarballFileReader{
+				tarReader: tr,
+				file:      file,
+			}, nil
+		}
+	}
+
+	return nil, errors.New("could not file in tarball")
+}

utils/general_utils.go

@@ -0,0 +1,78 @@
+package utils
+
+import (
+	"fmt"
+	"io"
+	"math"
+	"os"
+	"syscall"
+)
+
+func GetArch() string {
+	uname := syscall.Utsname{}
+	err := syscall.Uname(&uname)
+	if err != nil {
+		return ""
+	}
+
+	var byteString [65]byte
+	var indexLength int
+	for ; uname.Machine[indexLength] != 0; indexLength++ {
+		byteString[indexLength] = uint8(uname.Machine[indexLength])
+	}
+	return string(byteString[:indexLength])
+}
+
+func copyFileContents(src, dst string) (err error) {
+	in, err := os.Open(src)
+	if err != nil {
+		return
+	}
+	defer in.Close()
+	out, err := os.Create(dst)
+	if err != nil {
+		return
+	}
+	defer func() {
+		cerr := out.Close()
+		if err == nil {
+			err = cerr
+		}
+	}()
+	if _, err = io.Copy(out, in); err != nil {
+		return
+	}
+	err = out.Sync()
+	return
+}
+
+func stringSliceRemove(s []string, r string) []string {
+	for i, v := range s {
+		if v == r {
+			return append(s[:i], s[i+1:]...)
+		}
+	}
+	return s
+}
+
+func UnsignedBytesToHumanReadable(b uint64) string {
+	bf := float64(b)
+	for _, unit := range []string{"", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"} {
+		if math.Abs(bf) < 1024.0 {
+			return fmt.Sprintf("%3.1f%sB", bf, unit)
+		}
+		bf /= 1024.0
+	}
+	return fmt.Sprintf("%.1fYiB", bf)
+}
+
+func BytesToHumanReadable(b int64) string {
+	bf := float64(b)
+	for _, unit := range []string{"", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"} {
+		if math.Abs(bf) < 1024.0 {
+			return fmt.Sprintf("%3.1f%sB", bf, unit)
+		}
+		bf /= 1024.0
+	}
+	return fmt.Sprintf("%.1fYiB", bf)
+}

utils/operations.go

@@ -0,0 +1,289 @@
+package utils
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"slices"
+	"strings"
+)
+
+type BPMOperation struct {
+	Actions           []OperationAction
+	UnresolvedDepends []string
+	RootDir           string
+}
+
+func (operation *BPMOperation) ActionsContainPackage(pkg string) bool {
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "install" {
+			if action.(*InstallPackageAction).BpmPackage.PkgInfo.Name == pkg {
+				return true
+			}
+		} else if action.GetActionType() == "fetch" {
+			if action.(*FetchPackageAction).RepositoryEntry.Info.Name == pkg {
+				return true
+			}
+		} else if action.GetActionType() == "remove" {
+			if action.(*RemovePackageAction).BpmPackage.PkgInfo.Name == pkg {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func (operation *BPMOperation) InsertActionAt(index int, action OperationAction) {
+	if len(operation.Actions) == index { // nil or empty slice or after last element
+		operation.Actions = append(operation.Actions, action)
+	}
+	operation.Actions = append(operation.Actions[:index+1], operation.Actions[index:]...) // index < len(a)
+	operation.Actions[index] = action
+}
+
+func (operation *BPMOperation) GetTotalDownloadSize() uint64 {
+	var ret uint64 = 0
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "fetch" {
+			ret += action.(*FetchPackageAction).RepositoryEntry.DownloadSize
+		}
+	}
+	return ret
+}
+
+func (operation *BPMOperation) GetTotalInstalledSize() uint64 {
+	var ret uint64 = 0
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "install" {
+			ret += action.(*InstallPackageAction).BpmPackage.GetInstalledSize()
+		} else if action.GetActionType() == "fetch" {
+			ret += action.(*FetchPackageAction).RepositoryEntry.InstalledSize
+		}
+	}
+	return ret
+}
+
+func (operation *BPMOperation) GetFinalActionSize(rootDir string) int64 {
+	var ret int64 = 0
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "install" {
+			ret += int64(action.(*InstallPackageAction).BpmPackage.GetInstalledSize())
+			if IsPackageInstalled(action.(*InstallPackageAction).BpmPackage.PkgInfo.Name, rootDir) {
+				ret -= int64(GetPackage(action.(*InstallPackageAction).BpmPackage.PkgInfo.Name, rootDir).GetInstalledSize())
+			}
+		} else if action.GetActionType() == "fetch" {
+			ret += int64(action.(*FetchPackageAction).RepositoryEntry.InstalledSize)
+		} else if action.GetActionType() == "remove" {
+			ret -= int64(action.(*RemovePackageAction).BpmPackage.GetInstalledSize())
+		}
+	}
+	return ret
+}
+
+func (operation *BPMOperation) ResolveDependencies(reinstallDependencies, installOptionalDependencies, verbose bool) error {
+	pos := 0
+	for _, value := range slices.Clone(operation.Actions) {
+		var pkgInfo *PackageInfo
+		if value.GetActionType() == "install" {
+			action := value.(*InstallPackageAction)
+			pkgInfo = action.BpmPackage.PkgInfo
+		} else if value.GetActionType() == "fetch" {
+			action := value.(*FetchPackageAction)
+			pkgInfo = action.RepositoryEntry.Info
+		} else {
+			pos++
+			continue
+		}
+
+		resolved, unresolved := pkgInfo.ResolveDependencies(&[]string{}, &[]string{}, pkgInfo.Type == "source", installOptionalDependencies, !reinstallDependencies, verbose, operation.RootDir)
+
+		operation.UnresolvedDepends = append(operation.UnresolvedDepends, unresolved...)
+
+		for _, depend := range resolved {
+			if !operation.ActionsContainPackage(depend) && depend != pkgInfo.Name {
+				if !reinstallDependencies && IsPackageInstalled(depend, operation.RootDir) {
+					continue
+				}
+				entry, _, err := GetRepositoryEntry(depend)
+				if err != nil {
+					return errors.New("could not get repository entry for package (" + depend + ")")
+				}
+				operation.InsertActionAt(pos, &FetchPackageAction{
+					IsDependency:    true,
+					RepositoryEntry: entry,
+				})
+				pos++
+			}
+		}
+		pos++
+	}
+
+	return nil
+}
+
+func (operation *BPMOperation) ShowOperationSummary() {
+	if len(operation.Actions) == 0 {
+		fmt.Println("All packages are up to date!")
+		os.Exit(0)
+	}
+
+	for _, value := range operation.Actions {
+		var pkgInfo *PackageInfo
+		if value.GetActionType() == "install" {
+			pkgInfo = value.(*InstallPackageAction).BpmPackage.PkgInfo
+		} else if value.GetActionType() == "fetch" {
+			pkgInfo = value.(*FetchPackageAction).RepositoryEntry.Info
+		} else {
+			pkgInfo = value.(*RemovePackageAction).BpmPackage.PkgInfo
+			fmt.Printf("%s: %s (Remove)\n", pkgInfo.Name, pkgInfo.GetFullVersion())
+			continue
+		}
+
+		installedInfo := GetPackageInfo(pkgInfo.Name, operation.RootDir)
+		sourceInfo := ""
+		if pkgInfo.Type == "source" {
+			if operation.RootDir != "/" {
+				log.Fatalf("cannot compile and install source packages to a different root directory")
+			}
+			sourceInfo = "(From Source)"
+		}
+
+		if installedInfo == nil {
+			fmt.Printf("%s: %s (Install) %s\n", pkgInfo.Name, pkgInfo.GetFullVersion(), sourceInfo)
+		} else {
+			comparison := ComparePackageVersions(*pkgInfo, *installedInfo)
+			if comparison < 0 {
+				fmt.Printf("%s: %s -> %s (Downgrade) %s\n", pkgInfo.Name, installedInfo.GetFullVersion(), pkgInfo.GetFullVersion(), sourceInfo)
+			} else if comparison > 0 {
+				fmt.Printf("%s: %s -> %s (Upgrade) %s\n", pkgInfo.Name, installedInfo.GetFullVersion(), pkgInfo.GetFullVersion(), sourceInfo)
+			} else {
+				fmt.Printf("%s: %s (Reinstall) %s\n", pkgInfo.Name, pkgInfo.GetFullVersion(), sourceInfo)
+			}
+		}
+	}
+
+	if operation.RootDir != "/" {
+		fmt.Println("Warning: Operating in " + operation.RootDir)
+	}
+	if operation.GetTotalDownloadSize() > 0 {
+		fmt.Printf("%s will be downloaded to complete this operation\n", UnsignedBytesToHumanReadable(operation.GetTotalDownloadSize()))
+	}
+	if operation.GetFinalActionSize(operation.RootDir) > 0 {
+		fmt.Printf("A total of %s will be installed after the operation finishes\n", BytesToHumanReadable(operation.GetFinalActionSize(operation.RootDir)))
+	} else if operation.GetFinalActionSize(operation.RootDir) < 0 {
+		fmt.Printf("A total of %s will be freed after the operation finishes\n", strings.TrimPrefix(BytesToHumanReadable(operation.GetFinalActionSize(operation.RootDir)), "-"))
+	}
+}
+
+func (operation *BPMOperation) Execute(verbose, force bool) error {
+	// Fetch packages from repositories
+	if slices.ContainsFunc(operation.Actions, func(action OperationAction) bool {
+		return action.GetActionType() == "fetch"
+	}) {
+		fmt.Println("Fetching packages from available repositories...")
+		for i, action := range operation.Actions {
+			if action.GetActionType() != "fetch" {
+				continue
+			}
+			entry := action.(*FetchPackageAction).RepositoryEntry
+			fetchedPackage, err := entry.Repository.FetchPackage(entry.Info.Name)
+			if err != nil {
+				return errors.New(fmt.Sprintf("could not fetch package (%s): %s\n", entry.Info.Name, err))
+			}
+			bpmpkg, err := ReadPackage(fetchedPackage)
+			if err != nil {
+				return errors.New(fmt.Sprintf("could not fetch package (%s): %s\n", entry.Info.Name, err))
+			}
+			fmt.Printf("Package (%s) was successfully fetched!\n", bpmpkg.PkgInfo.Name)
+			operation.Actions[i] = &InstallPackageAction{
+				File:         fetchedPackage,
+				IsDependency: action.(*FetchPackageAction).IsDependency,
+				BpmPackage:   bpmpkg,
+			}
+		}
+	}
+
+	// Determine words to be used for the following message
+	words := make([]string, 0)
+	if slices.ContainsFunc(operation.Actions, func(action OperationAction) bool {
+		return action.GetActionType() == "install"
+	}) {
+		words = append(words, "Installing")
+	}
+
+	if slices.ContainsFunc(operation.Actions, func(action OperationAction) bool {
+		return action.GetActionType() == "remove"
+	}) {
+		words = append(words, "Removing")
+	}
+
+	if len(words) == 0 {
+		return nil
+	}
+	fmt.Printf("%s packages...\n", strings.Join(words, "/"))
+
+	// Installing/Removing packages from system
+	for _, action := range operation.Actions {
+		if action.GetActionType() == "remove" {
+			pkgInfo := action.(*RemovePackageAction).BpmPackage.PkgInfo
+			err := RemovePackage(pkgInfo.Name, verbose, operation.RootDir)
+			if err != nil {
+				return errors.New(fmt.Sprintf("could not remove package (%s): %s\n", pkgInfo.Name, err))
+			}
+		} else if action.GetActionType() == "install" {
+			value := action.(*InstallPackageAction)
+			bpmpkg := value.BpmPackage
+			var err error
+			if value.IsDependency {
+				err = InstallPackage(value.File, operation.RootDir, verbose, true, false, false, false)
+			} else {
+				err = InstallPackage(value.File, operation.RootDir, verbose, force, false, false, false)
+			}
+			if err != nil {
+				return errors.New(fmt.Sprintf("could not install package (%s): %s\n", bpmpkg.PkgInfo.Name, err))
+			}
+			fmt.Printf("Package (%s) was successfully installed\n", bpmpkg.PkgInfo.Name)
+			if value.IsDependency {
+				err := SetInstallationReason(bpmpkg.PkgInfo.Name, Dependency, operation.RootDir)
+				if err != nil {
+					return errors.New(fmt.Sprintf("could not set installation reason for package (%s): %s\n", value.BpmPackage.PkgInfo.Name, err))
+				}
+			}
+		}
+	}
+	fmt.Println("Operation complete!")
+
+	return nil
+}
+
+type OperationAction interface {
+	GetActionType() string
+}
+
+type InstallPackageAction struct {
+	File         string
+	IsDependency bool
+	BpmPackage   *BPMPackage
+}
+
+func (action *InstallPackageAction) GetActionType() string {
+	return "install"
+}
+
+type FetchPackageAction struct {
+	IsDependency    bool
+	RepositoryEntry *RepositoryEntry
+}
+
+func (action *FetchPackageAction) GetActionType() string {
+	return "fetch"
+}
+
+type RemovePackageAction struct {
+	BpmPackage *BPMPackage
+}
+
+func (action *RemovePackageAction) GetActionType() string {
+	return "remove"
+}

utils/repo_utils.go

@@ -0,0 +1,197 @@
+package utils
+
+import (
+	"errors"
+	"gopkg.in/yaml.v3"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+	"sort"
+	"strings"
+)
+
+type Repository struct {
+	Name     string `yaml:"name"`
+	Source   string `yaml:"source"`
+	Disabled *bool  `yaml:"disabled"`
+	Entries  map[string]*RepositoryEntry
+}
+
+type RepositoryEntry struct {
+	Info             *PackageInfo `yaml:"info"`
+	Download         string       `yaml:"download"`
+	DownloadSize     uint64       `yaml:"download_size"`
+	InstalledSize    uint64       `yaml:"installed_size"`
+	IsVirtualPackage bool         `yaml:"-"`
+	Repository       *Repository
+}
+
+func (repo *Repository) ContainsPackage(pkg string) bool {
+	_, ok := repo.Entries[pkg]
+	return ok
+}
+
+func (repo *Repository) ReadLocalDatabase() error {
+	repoFile := "/var/lib/bpm/repositories/" + repo.Name + ".bpmdb"
+	if _, err := os.Stat(repoFile); err != nil {
+		return nil
+	}
+
+	bytes, err := os.ReadFile(repoFile)
+	if err != nil {
+		return err
+	}
+
+	virtualPackages := make(map[string][]string)
+
+	data := string(bytes)
+	for _, b := range strings.Split(data, "---") {
+		entry := RepositoryEntry{
+			Info: &PackageInfo{
+				Name:            "",
+				Description:     "",
+				Version:         "",
+				Revision:        1,
+				Url:             "",
+				License:         "",
+				Arch:            "",
+				Type:            "",
+				Keep:            make([]string, 0),
+				Depends:         make([]string, 0),
+				MakeDepends:     make([]string, 0),
+				OptionalDepends: make([]string, 0),
+				Conflicts:       make([]string, 0),
+				Provides:        make([]string, 0),
+			},
+			Download:         "",
+			DownloadSize:     0,
+			InstalledSize:    0,
+			IsVirtualPackage: false,
+			Repository:       repo,
+		}
+		err := yaml.Unmarshal([]byte(b), &entry)
+		if err != nil {
+			return err
+		}
+
+		for _, p := range entry.Info.Provides {
+			virtualPackages[p] = append(virtualPackages[p], entry.Info.Name)
+		}
+		repo.Entries[entry.Info.Name] = &entry
+	}
+
+	for key, value := range virtualPackages {
+		if _, ok := repo.Entries[key]; ok {
+			continue
+		}
+		sort.Strings(value)
+		entry := RepositoryEntry{
+			Info:             repo.Entries[value[0]].Info,
+			Download:         repo.Entries[value[0]].Download,
+			DownloadSize:     repo.Entries[value[0]].DownloadSize,
+			InstalledSize:    repo.Entries[value[0]].InstalledSize,
+			IsVirtualPackage: true,
+			Repository:       repo,
+		}
+		repo.Entries[key] = &entry
+	}
+	return nil
+}
+
+func (repo *Repository) SyncLocalDatabase() error {
+	repoFile := "/var/lib/bpm/repositories/" + repo.Name + ".bpmdb"
+	err := os.MkdirAll(path.Dir(repoFile), 0755)
+	if err != nil {
+		return err
+	}
+
+	u, err := url.JoinPath(repo.Source, "database.bpmdb")
+	if err != nil {
+		return err
+	}
+
+	resp, err := http.Get(u)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	out, err := os.Create(repoFile)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, resp.Body)
+
+	return nil
+}
+
+func GetRepository(name string) *Repository {
+	for _, repo := range BPMConfig.Repositories {
+		if repo.Name == name {
+			return repo
+		}
+	}
+	return nil
+}
+
+func GetRepositoryEntry(str string) (*RepositoryEntry, *Repository, error) {
+	split := strings.Split(str, "/")
+	if len(split) == 1 {
+		pkgName := strings.TrimSpace(split[0])
+		if pkgName == "" {
+			return nil, nil, errors.New("could not find repository entry for this package")
+		}
+		for _, repo := range BPMConfig.Repositories {
+			if repo.ContainsPackage(pkgName) {
+				return repo.Entries[pkgName], repo, nil
+			}
+		}
+		return nil, nil, errors.New("could not find repository entry for this package")
+	} else if len(split) == 2 {
+		repoName := strings.TrimSpace(split[0])
+		pkgName := strings.TrimSpace(split[1])
+		if repoName == "" || pkgName == "" {
+			return nil, nil, errors.New("could not find repository entry for this package")
+		}
+		repo := GetRepository(repoName)
+		if repo == nil || !repo.ContainsPackage(pkgName) {
+			return nil, nil, errors.New("could not find repository entry for this package")
+		}
+		return repo.Entries[pkgName], repo, nil
+	} else {
+		return nil, nil, errors.New("could not find repository entry for this package")
+	}
+}
+
+func (repo *Repository) FetchPackage(pkg string) (string, error) {
+	if !repo.ContainsPackage(pkg) {
+		return "", errors.New("could not fetch package '" + pkg + "'")
+	}
+	entry := repo.Entries[pkg]
+	URL, err := url.JoinPath(repo.Source, entry.Download)
+	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/packages/", 0755)
+	if err != nil {
+		return "", err
+	}
+	out, err := os.Create("/var/cache/bpm/packages/" + path.Base(entry.Download))
+	if err != nil {
+		return "", err
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, resp.Body)
+	return "/var/cache/bpm/packages/" + path.Base(entry.Download), nil
+}