config/bpm.conf

@@ -1,4 +1,8 @@
 compilation_env: []
 silent_compilation: false
 compilation_dir: "/var/tmp/"
-binary_output_dir: "/var/lib/bpm/compiled/"
+binary_output_dir: "/var/lib/bpm/compiled/"
+repositories:
+  - name: example-repository
+    source: https://my-repo.xyz/
+    disabled: true

go.mod

@@ -2,4 +2,7 @@ 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
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -1,3 +1,5 @@
+github.com/elliotchance/orderedmap/v2 v2.4.0 h1:6tUmMwD9F998FNpwFxA5E6NQvSpk2PVw7RKsVq3+2Cw=
+github.com/elliotchance/orderedmap/v2 v2.4.0/go.mod h1:85lZyVbpGaGvHvnKa7Qhx7zncAdBIBq6u56Hb1PRU5Q=
 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

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"flag"
 	"fmt"
+	"github.com/elliotchance/orderedmap/v2"
 	"gitlab.com/bubble-package-manager/bpm/utils"
 	"log"
 	"os"
@@ -29,10 +30,13 @@ var yesAll = false
 var buildSource = false
 var skipCheck = false
 var keepTempDir = false
-var forceInstall = false
+var force = false
-var showInstalled = false
 var pkgListNumbers = false
 var pkgListNames = false
+var reinstall = false
+var reinstallAll = false
+var noOptional = false
+var nosync = true
 
 func main() {
 	utils.ReadConfig()
@@ -47,7 +51,10 @@ const (
 	version
 	info
 	list
+	search
 	install
+	update
+	sync
 	remove
 	file
 )
@@ -60,8 +67,14 @@ func getCommandType() commandType {
 		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":
@@ -84,26 +97,12 @@ func resolveCommand() {
 		}
 		for n, pkg := range packages {
 			var info *utils.PackageInfo
-			if _, err := os.Stat(pkg); err == nil && !showInstalled {
+			info = utils.GetPackageInfo(pkg, rootDir, false)
-				info, err = utils.ReadPackage(pkg)
+			if info == nil {
-				if err != nil {
+				log.Fatalf("Package (%s) is not installed\n", pkg)
-					fmt.Printf("File (%s) could not be read\n", pkg)
-					continue
-				}
-
-			} else {
-				info = utils.GetPackageInfo(pkg, rootDir, false)
-				if info == nil {
-					fmt.Printf("Package (%s) could not be found\n", pkg)
-					continue
-				}
 			}
 			fmt.Println("----------------")
-			if showInstalled {
+			fmt.Println(utils.CreateReadableInfo(true, true, true, info, rootDir))
-				fmt.Println(utils.CreateReadableInfo(false, false, true, false, true, info, rootDir))
-			} else {
-				fmt.Println(utils.CreateReadableInfo(true, true, true, true, true, info, rootDir))
-			}
 			if n == len(packages)-1 {
 				fmt.Println("----------------")
 			}
@@ -131,113 +130,417 @@ func resolveCommand() {
 					fmt.Printf("Package (%s) could not be found\n", pkg)
 					continue
 				}
-				fmt.Println("----------------\n" + utils.CreateReadableInfo(true, true, true, true, true, info, rootDir))
+				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 {
+			fmt.Println("No search terms given")
+			os.Exit(0)
+		}
+
+		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("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.Version)
+			}
+		}
 	case install:
 		if os.Getuid() != 0 {
 			fmt.Println("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 := utils.ReadPackage(file)
+		pkgsToInstall := orderedmap.NewOrderedMap[string, *struct {
-			if err != nil {
+			isDependency bool
-				log.Fatalf("Could not read package\nError: %s\n", err)
+			pkgInfo      *utils.PackageInfo
-			}
+		}]()
-			if !yesAll {
+		pkgsToFetch := orderedmap.NewOrderedMap[string, *struct {
-				fmt.Println("----------------\n" + utils.CreateReadableInfo(true, true, true, true, false, pkgInfo, rootDir))
+			isDependency bool
-				fmt.Println("----------------")
+			pkgInfo      *utils.PackageInfo
-			}
+		}]()
-			verb := "install"
+		unresolvedDepends := make([]string, 0)
-			if pkgInfo.Type == "source" {
+
-				if _, err := os.Stat("/bin/fakeroot"); os.IsNotExist(err) {
+		// Search for packages
-					fmt.Printf("Skipping... cannot %s package (%s) due to fakeroot not being installed", verb, pkgInfo.Name)
+		for _, pkg := range pkgs {
+			if stat, err := os.Stat(pkg); err == nil && !stat.IsDir() {
+				pkgInfo, err := utils.ReadPackage(pkg)
+				if err != nil {
+					log.Fatalf("Could not read package. Error: %s\n", err)
+				}
+				if !reinstall && utils.IsPackageInstalled(pkgInfo.Name, rootDir) && utils.GetPackageInfo(pkgInfo.Name, rootDir, true).Version == pkgInfo.Version {
 					continue
 				}
-				verb = "build"
+				pkgsToInstall.Set(pkg, &struct {
-			}
+					isDependency bool
-			if !forceInstall {
+					pkgInfo      *utils.PackageInfo
-				if pkgInfo.Arch != "any" && pkgInfo.Arch != utils.GetArch() {
+				}{isDependency: false, pkgInfo: pkgInfo})
-					fmt.Printf("skipping... cannot %s a package with a different architecture\n", verb)
+			} else {
-					continue
+				entry, _, err := utils.GetRepositoryEntry(pkg)
-				}
+				if err != nil {
-				if unresolved := utils.CheckDependencies(pkgInfo, true, true, rootDir); len(unresolved) != 0 {
+					log.Fatalf("Could not find package (%s) in any repository\n", pkg)
-					fmt.Printf("skipping... cannot %s package (%s) due to missing dependencies: %s\n", verb, pkgInfo.Name, strings.Join(unresolved, ", "))
+				}
-					continue
+				if !reinstall && utils.IsPackageInstalled(entry.Info.Name, rootDir) && utils.GetPackageInfo(entry.Info.Name, rootDir, true).Version == entry.Info.Version {
-				}
-				if conflicts := utils.CheckConflicts(pkgInfo, true, rootDir); len(conflicts) != 0 {
-					fmt.Printf("skipping... cannot %s package (%s) due to conflicting packages: %s\n", verb, pkgInfo.Name, strings.Join(conflicts, ", "))
 					continue
 				}
+				pkgsToFetch.Set(entry.Info.Name, &struct {
+					isDependency bool
+					pkgInfo      *utils.PackageInfo
+				}{isDependency: false, pkgInfo: entry.Info})
 			}
-			if rootDir != "/" {
+		}
-				fmt.Println("Warning: Operating in " + rootDir)
+
-			}
+		// Check for dependencies and conflicts
-			if !yesAll {
+		clone := pkgsToFetch.Copy()
-				reader := bufio.NewReader(os.Stdin)
+		pkgsToFetch = orderedmap.NewOrderedMap[string, *struct {
-				if pkgInfo.Type == "source" {
+			isDependency bool
-					fmt.Print("Would you like to view the source.sh file of this package? [Y\\n] ")
+			pkgInfo      *utils.PackageInfo
-					text, _ := reader.ReadString('\n')
+		}]()
-					if strings.TrimSpace(strings.ToLower(text)) != "n" && strings.TrimSpace(strings.ToLower(text)) != "no" {
+		for _, pkg := range clone.Keys() {
-						script, err := utils.GetSourceScript(file)
+			value := clone.GetElement(pkg).Value
-						if err != nil {
+			resolved, unresolved := value.pkgInfo.ResolveAll(&[]string{}, &[]string{}, false, !noOptional, !reinstall, rootDir)
-							log.Fatalf("Could not read source script\nError: %s\n", err)
+			unresolvedDepends = append(unresolvedDepends, unresolved...)
-						}
+			for _, depend := range resolved {
-						fmt.Println(script)
+				if _, ok := pkgsToFetch.Get(depend); !ok && depend != value.pkgInfo.Name {
-						fmt.Println("-------EOF-------")
+					if !reinstallAll && utils.IsPackageInstalled(depend, rootDir) {
-					}
-				}
-			}
-			if utils.IsPackageInstalled(pkgInfo.Name, rootDir) {
-				if !yesAll {
-					installedInfo := 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
 					}
-				}
+					entry, _, err := utils.GetRepositoryEntry(depend)
-			} else if !yesAll {
+					if err != nil {
-				reader := bufio.NewReader(os.Stdin)
+						log.Fatalf("Could not find package (%s) in any repository\n", pkg)
-				fmt.Printf("Do you wish to %s this package? [y\\N] ", verb)
+					}
-				text, _ := reader.ReadString('\n')
+					pkgsToFetch.Set(depend, &struct {
-				if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
+						isDependency bool
-					fmt.Printf("Skipping package (%s)...\n", pkgInfo.Name)
+						pkgInfo      *utils.PackageInfo
-					continue
+					}{isDependency: true, pkgInfo: entry.Info})
 				}
 			}
+			pkgsToFetch.Set(pkg, value)
+		}
+
+		for _, pkg := range pkgsToInstall.Keys() {
+			value, _ := pkgsToInstall.Get(pkg)
+			resolved, unresolved := value.pkgInfo.ResolveAll(&[]string{}, &[]string{}, false, !noOptional, !reinstall, rootDir)
+			unresolvedDepends = append(unresolvedDepends, unresolved...)
+			for _, depend := range resolved {
+				if _, ok := clone.Get(depend); !ok && depend != value.pkgInfo.Name {
+					if !reinstallAll && utils.IsPackageInstalled(depend, rootDir) {
+						continue
+					}
+					entry, _, err := utils.GetRepositoryEntry(depend)
+					if err != nil {
+						log.Fatalf("Could not find package (%s) in any repository\n", pkg)
+					}
+					pkgsToFetch.Set(depend, &struct {
+						isDependency bool
+						pkgInfo      *utils.PackageInfo
+					}{isDependency: true, pkgInfo: entry.Info})
+				}
+			}
+		}
+
+		// Show summary
+		if len(unresolvedDepends) != 0 {
+			if force {
+				log.Fatalf("The following dependencies could not be found in any repositories: %s\n", strings.Join(unresolvedDepends, ", "))
+			} else {
+				log.Println("Warning: The following dependencies could not be found in any repositories: " + strings.Join(unresolvedDepends, ", "))
+			}
+		}
+		if pkgsToInstall.Len()+pkgsToFetch.Len() == 0 {
+			fmt.Println("All packages are up to date!")
+			os.Exit(0)
+		}
+		for _, pkg := range pkgsToInstall.Keys() {
+			pkgInfo, err := utils.ReadPackage(pkg)
+			if err != nil {
+				if err != nil {
+					log.Fatalf("Could not read package. Error: %s\n", err)
+				}
+			}
+			installedInfo := utils.GetPackageInfo(pkgInfo.Name, rootDir, false)
+			if installedInfo == nil {
+				fmt.Printf("%s: %s (Install)\n", pkgInfo.Name, pkgInfo.Version)
+			} else if strings.Compare(pkgInfo.Version, installedInfo.Version) < 0 {
+				fmt.Printf("%s: %s -> %s (Downgrade)\n", pkgInfo.Name, installedInfo.Version, pkgInfo.Version)
+			} else if strings.Compare(pkgInfo.Version, installedInfo.Version) > 0 {
+				fmt.Printf("%s: %s -> %s (Upgrade)\n", pkgInfo.Name, installedInfo.Version, pkgInfo.Version)
+			} else {
+				fmt.Printf("%s: %s (Reinstall)\n", pkgInfo.Name, pkgInfo.Version)
+			}
+		}
+		for _, pkg := range pkgsToFetch.Keys() {
+			pkgInfo := pkgsToFetch.GetElement(pkg).Value.pkgInfo
+			installedInfo := utils.GetPackageInfo(pkgInfo.Name, rootDir, false)
+			if installedInfo == nil {
+				fmt.Printf("%s: %s (Install)\n", pkgInfo.Name, pkgInfo.Version)
+			} else if strings.Compare(pkgInfo.Version, installedInfo.Version) < 0 {
+				fmt.Printf("%s: %s -> %s (Downgrade)\n", pkgInfo.Name, installedInfo.Version, pkgInfo.Version)
+			} else if strings.Compare(pkgInfo.Version, installedInfo.Version) > 0 {
+				fmt.Printf("%s: %s -> %s (Upgrade)\n", pkgInfo.Name, installedInfo.Version, pkgInfo.Version)
+			} else {
+				fmt.Printf("%s: %s (Reinstall)\n", pkgInfo.Name, pkgInfo.Version)
+			}
+		}
+		if rootDir != "/" {
+			fmt.Println("Warning: Operating in " + rootDir)
+		}
+		if !yesAll {
+			reader := bufio.NewReader(os.Stdin)
+			fmt.Printf("Do you wish to install these %d packages? [y\\N] ", pkgsToInstall.Len()+pkgsToFetch.Len())
+			text, _ := reader.ReadString('\n')
+			if strings.TrimSpace(strings.ToLower(text)) != "y" && strings.TrimSpace(strings.ToLower(text)) != "yes" {
+				fmt.Println("Cancelling...")
+				os.Exit(1)
+			}
+		}
+
+		// Fetch packages from repositories
+		fmt.Println("Fetching packages from available repositories...")
+		for _, pkg := range pkgsToFetch.Keys() {
+			isDependency, _ := pkgsToFetch.Get(pkg)
+			entry, repo, err := utils.GetRepositoryEntry(pkg)
+			if err != nil {
+				log.Fatalf("Could not find package (%s) in any repository\n", pkg)
+			}
+			fetchedPackage, err := repo.FetchPackage(entry.Info.Name)
+			if err != nil {
+				log.Fatalf("Could not fetch package (%s). Error: %s\n", pkg, err)
+			}
+			pkgsToInstall.Set(fetchedPackage, isDependency)
+		}
+
+		// Install fetched packages
+		for _, pkg := range pkgsToInstall.Keys() {
+			value, _ := pkgsToInstall.Get(pkg)
+			pkgInfo := value.pkgInfo
+			var err error
+			if value.isDependency {
+				err = utils.InstallPackage(pkg, rootDir, verbose, true, buildSource, skipCheck, keepTempDir)
+			} else {
+				err = utils.InstallPackage(pkg, rootDir, verbose, force, buildSource, skipCheck, keepTempDir)
+			}
 
-			err = utils.InstallPackage(file, rootDir, verbose, forceInstall, buildSource, skipCheck, keepTempDir)
 			if err != nil {
 				if pkgInfo.Type == "source" && keepTempDir {
 					fmt.Println("BPM temp directory was created at /var/tmp/bpm_source-" + pkgInfo.Name)
 				}
-				log.Fatalf("Could not install package\nError: %s\n", err)
+				log.Fatalf("Could not install package (%s). Error: %s\n", pkg, err)
 			}
 			fmt.Printf("Package (%s) was successfully installed!\n", pkgInfo.Name)
+			if value.isDependency {
+				err := utils.SetInstallationReason(pkgInfo.Name, utils.Dependency, rootDir)
+				if err != nil {
+					log.Fatalf("Could not set installation reason for package\nError: %s\n", err)
+				}
+			}
 			if pkgInfo.Type == "source" && keepTempDir {
 				fmt.Println("** It is recommended you delete the temporary bpm folder in /var/tmp **")
 			}
 		}
+	case update:
+		if os.Getuid() != 0 {
+			fmt.Println("This subcommand needs to be run with superuser permissions")
+			os.Exit(0)
+		}
+
+		// 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.Fatal(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("Could not get installed packages! Error: %s\n", err)
+		}
+		toUpdate := orderedmap.NewOrderedMap[string, *struct {
+			isDependency bool
+			entry        *utils.RepositoryEntry
+		}]()
+		for _, pkg := range pkgs {
+			entry, _, err := utils.GetRepositoryEntry(pkg)
+			if err != nil {
+				continue
+			}
+			installedInfo := utils.GetPackageInfo(pkg, rootDir, true)
+			if installedInfo == nil {
+				log.Fatalf(pkg)
+			}
+			if strings.Compare(entry.Info.Version, installedInfo.Version) > 0 {
+				toUpdate.Set(entry.Info.Name, &struct {
+					isDependency bool
+					entry        *utils.RepositoryEntry
+				}{isDependency: false, entry: entry})
+			} else if reinstall {
+				toUpdate.Set(entry.Info.Name, &struct {
+					isDependency bool
+					entry        *utils.RepositoryEntry
+				}{isDependency: false, entry: entry})
+			}
+		}
+		if toUpdate.Len() == 0 {
+			fmt.Println("All packages are up to date!")
+			os.Exit(0)
+		}
+
+		// Check for new dependencies in updated packages
+		unresolved := make([]string, 0)
+		clone := toUpdate.Copy()
+		for _, key := range clone.Keys() {
+			pkg, _ := clone.Get(key)
+			r, u := pkg.entry.Info.ResolveAll(&[]string{}, &[]string{}, false, !noOptional, true, rootDir)
+			unresolved = append(unresolved, u...)
+			for _, depend := range r {
+				if _, ok := toUpdate.Get(depend); !ok {
+					entry, _, err := utils.GetRepositoryEntry(depend)
+					if err != nil {
+						log.Fatalf("Could not find package (%s) in any repository\n", depend)
+					}
+					toUpdate.Set(depend, &struct {
+						isDependency bool
+						entry        *utils.RepositoryEntry
+					}{isDependency: true, entry: entry})
+				}
+			}
+		}
+
+		if len(unresolved) != 0 {
+			if force {
+				log.Fatalf("The following dependencies could not be found in any repositories: %s\n", strings.Join(unresolved, ", "))
+			} else {
+				log.Println("Warning: The following dependencies could not be found in any repositories: " + strings.Join(unresolved, ", "))
+			}
+		}
+
+		for _, key := range toUpdate.Keys() {
+			value, _ := toUpdate.Get(key)
+			installedInfo := utils.GetPackageInfo(value.entry.Info.Name, rootDir, true)
+			if installedInfo == nil {
+				fmt.Printf("%s: %s (Install)\n", value.entry.Info.Name, value.entry.Info.Version)
+				continue
+			}
+			if strings.Compare(value.entry.Info.Version, installedInfo.Version) > 0 {
+				fmt.Printf("%s: %s -> %s (Upgrade)\n", value.entry.Info.Name, installedInfo.Version, value.entry.Info.Version)
+			} else if reinstall {
+				fmt.Printf("%s: %s -> %s (Reinstall)\n", value.entry.Info.Name, installedInfo.Version, value.entry.Info.Version)
+			}
+		}
+
+		// Update confirmation prompt
+		if !yesAll {
+			fmt.Printf("Are you sure you wish to update all %d packages? [y\\N] ", toUpdate.Len())
+			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 update...")
+				os.Exit(0)
+			}
+		}
+
+		// Fetch packages
+		pkgsToInstall := orderedmap.NewOrderedMap[string, *struct {
+			isDependency bool
+			entry        *utils.RepositoryEntry
+		}]()
+		fmt.Println("Fetching packages from available repositories...")
+		for _, pkg := range toUpdate.Keys() {
+			isDependency, _ := toUpdate.Get(pkg)
+			entry, repo, err := utils.GetRepositoryEntry(pkg)
+			if err != nil {
+				log.Fatalf("Could not find package (%s) in any repository\n", pkg)
+			}
+			fetchedPackage, err := repo.FetchPackage(entry.Info.Name)
+			if err != nil {
+				log.Fatalf("Could not fetch package (%s). Error: %s\n", pkg, err)
+			}
+			pkgsToInstall.Set(fetchedPackage, isDependency)
+		}
+
+		// Install fetched packages
+		for _, pkg := range pkgsToInstall.Keys() {
+			value, _ := pkgsToInstall.Get(pkg)
+			pkgInfo := value.entry.Info
+			var err error
+			if value.isDependency {
+				err = utils.InstallPackage(pkg, rootDir, verbose, true, buildSource, skipCheck, keepTempDir)
+			} else {
+				err = utils.InstallPackage(pkg, rootDir, verbose, force, buildSource, skipCheck, keepTempDir)
+			}
+
+			if err != nil {
+				if pkgInfo.Type == "source" && keepTempDir {
+					fmt.Println("BPM temp directory was created at /var/tmp/bpm_source-" + pkgInfo.Name)
+				}
+				log.Fatalf("Could not install package (%s). Error: %s\n", pkg, err)
+			}
+			fmt.Printf("Package (%s) was successfully installed!\n", pkgInfo.Name)
+			if value.isDependency {
+				err := utils.SetInstallationReason(pkgInfo.Name, utils.Dependency, rootDir)
+				if err != nil {
+					log.Fatalf("Could not set installation reason for package\nError: %s\n", err)
+				}
+			}
+			if pkgInfo.Type == "source" && keepTempDir {
+				fmt.Println("** It is recommended you delete the temporary bpm folder in /var/tmp **")
+			}
+		}
+	case sync:
+		if os.Getuid() != 0 {
+			fmt.Println("This subcommand needs to be run with superuser permissions")
+			os.Exit(0)
+		}
+		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 sync...")
+				os.Exit(0)
+			}
+		}
+		for _, repo := range utils.BPMConfig.Repositories {
+			fmt.Printf("Fetching package database for repository (%s)...\n", repo.Name)
+			err := repo.SyncLocalDatabase()
+			if err != nil {
+				log.Fatal(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")
@@ -254,7 +557,7 @@ func resolveCommand() {
 				fmt.Printf("Package (%s) could not be found\n", pkg)
 				continue
 			}
-			fmt.Println("----------------\n" + utils.CreateReadableInfo(true, true, true, true, true, pkgInfo, rootDir))
+			fmt.Println("----------------\n" + utils.CreateReadableInfo(false, false, false, pkgInfo, rootDir))
 			fmt.Println("----------------")
 			if rootDir != "/" {
 				fmt.Println("Warning: Operating in " + rootDir)
@@ -333,22 +636,36 @@ 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("       -i shows information about the currently installed package")
 	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, -v, -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("       --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")
@@ -368,7 +685,6 @@ func resolveFlags() {
 	// Info flags
 	infoFlagSet := flag.NewFlagSet("Info flags", flag.ExitOnError)
 	infoFlagSet.StringVar(&rootDir, "R", "/", "Set the destination root")
-	infoFlagSet.BoolVar(&showInstalled, "i", false, "Shows information about the currently installed package")
 	infoFlagSet.Usage = printHelp
 	// Install flags
 	installFlagSet := flag.NewFlagSet("Install flags", flag.ExitOnError)
@@ -380,8 +696,26 @@ func resolveFlags() {
 	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")
@@ -415,6 +749,18 @@ 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 {
@@ -428,5 +774,8 @@ func resolveFlags() {
 			}
 			subcommandArgs = fileFlagSet.Args()
 		}
+		if reinstallAll {
+			reinstall = true
+		}
 	}
 }

utils/config.go

@@ -2,33 +2,48 @@ package utils
 
 import (
 	"gopkg.in/yaml.v3"
+	"log"
 	"os"
 )
 
 type BPMConfigStruct struct {
-	CompilationEnv    []string `yaml:"compilation_env"`
+	CompilationEnv    []string      `yaml:"compilation_env"`
-	SilentCompilation bool     `yaml:"silent_compilation"`
+	SilentCompilation bool          `yaml:"silent_compilation"`
-	BinaryOutputDir   string   `yaml:"binary_output_dir"`
+	BinaryOutputDir   string        `yaml:"binary_output_dir"`
-	CompilationDir    string   `yaml:"compilation_dir"`
+	CompilationDir    string        `yaml:"compilation_dir"`
+	Repositories      []*Repository `yaml:"repositories"`
 }
 
-var BPMConfig BPMConfigStruct = BPMConfigStruct{
+var BPMConfig 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
+		log.Fatal(err)
 	}
 	bytes, err := os.ReadFile("/etc/bpm.conf")
 	if err != nil {
-		return
+		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 {
-		return
+		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/package_utils.go

@@ -20,23 +20,19 @@ import (
 )
 
 type PackageInfo struct {
-	Name                   string              `yaml:"name,omitempty"`
+	Name            string   `yaml:"name,omitempty"`
-	Description            string              `yaml:"description,omitempty"`
+	Description     string   `yaml:"description,omitempty"`
-	Version                string              `yaml:"version,omitempty"`
+	Version         string   `yaml:"version,omitempty"`
-	Url                    string              `yaml:"url,omitempty"`
+	Url             string   `yaml:"url,omitempty"`
-	License                string              `yaml:"license,omitempty"`
+	License         string   `yaml:"license,omitempty"`
-	Arch                   string              `yaml:"architecture,omitempty"`
+	Arch            string   `yaml:"architecture,omitempty"`
-	Type                   string              `yaml:"type,omitempty"`
+	Type            string   `yaml:"type,omitempty"`
-	Keep                   []string            `yaml:"keep,omitempty"`
+	Keep            []string `yaml:"keep,omitempty"`
-	Depends                []string            `yaml:"depends,omitempty"`
+	Depends         []string `yaml:"depends,omitempty"`
-	ConditionalDepends     map[string][]string `yaml:"conditional_depends,omitempty"`
+	MakeDepends     []string `yaml:"make_depends,omitempty"`
-	MakeDepends            []string            `yaml:"make_depends,omitempty"`
+	OptionalDepends []string `yaml:"optional_depends,omitempty"`
-	ConditionalMakeDepends map[string][]string `yaml:"conditional_make_depends,omitempty"`
+	Conflicts       []string `yaml:"conflicts,omitempty"`
-	Conflicts              []string            `yaml:"conflicts,omitempty"`
+	Provides        []string `yaml:"provides,omitempty"`
-	ConditionalConflicts   map[string][]string `yaml:"conditional_conflicts,omitempty"`
-	Optional               []string            `yaml:"optional,omitempty"`
-	ConditionalOptional    map[string][]string `yaml:"conditional_optional,omitempty"`
-	Provides               []string            `yaml:"provides,omitempty"`
 }
 
 type InstallationReason string
@@ -312,23 +308,19 @@ func ExecutePackageScripts(filename, rootDir string, operation Operation, postOp
 
 func ReadPackageInfo(contents string, defaultValues bool) (*PackageInfo, error) {
 	pkgInfo := PackageInfo{
-		Name:                   "",
+		Name:            "",
-		Description:            "",
+		Description:     "",
-		Version:                "",
+		Version:         "",
-		Url:                    "",
+		Url:             "",
-		License:                "",
+		License:         "",
-		Arch:                   "",
+		Arch:            "",
-		Type:                   "",
+		Type:            "",
-		Keep:                   make([]string, 0),
+		Keep:            make([]string, 0),
-		Depends:                make([]string, 0),
+		Depends:         make([]string, 0),
-		ConditionalDepends:     make(map[string][]string),
+		MakeDepends:     make([]string, 0),
-		MakeDepends:            make([]string, 0),
+		OptionalDepends: make([]string, 0),
-		ConditionalMakeDepends: make(map[string][]string),
+		Conflicts:       make([]string, 0),
-		Conflicts:              make([]string, 0),
+		Provides:        make([]string, 0),
-		ConditionalConflicts:   make(map[string][]string),
-		Optional:               make([]string, 0),
-		ConditionalOptional:    make(map[string][]string),
-		Provides:               make([]string, 0),
 	}
 	err := yaml.Unmarshal([]byte(contents), &pkgInfo)
 	if err != nil {
@@ -361,7 +353,7 @@ func CreateInfoFile(pkgInfo *PackageInfo) string {
 	return string(bytes)
 }
 
-func CreateReadableInfo(showArchitecture, showType, showPackageRelations, showRemoteInfo, showInstallationReason bool, pkgInfo *PackageInfo, rootDir string) string {
+func CreateReadableInfo(showArchitecture, showType, showPackageRelations bool, pkgInfo *PackageInfo, rootDir string) string {
 	ret := make([]string, 0)
 	appendArray := func(label string, array []string) {
 		if len(array) == 0 {
@@ -369,18 +361,6 @@ func CreateReadableInfo(showArchitecture, showType, showPackageRelations, showRe
 		}
 		ret = append(ret, fmt.Sprintf("%s: %s", label, strings.Join(array, ", ")))
 	}
-	appendMap := func(label string, m map[string][]string) {
-		if len(m) == 0 {
-			return
-		}
-		ret = append(ret, label+":")
-		for k, v := range m {
-			if len(v) == 0 {
-				continue
-			}
-			ret = append(ret, fmt.Sprintf("  %s: %s", k, strings.Join(v, ", ")))
-		}
-	}
 	ret = append(ret, "Name: "+pkgInfo.Name)
 	ret = append(ret, "Description: "+pkgInfo.Description)
 	ret = append(ret, "Version: "+pkgInfo.Version)
@@ -395,22 +375,12 @@ func CreateReadableInfo(showArchitecture, showType, showPackageRelations, showRe
 	if showPackageRelations {
 		appendArray("Dependencies", pkgInfo.Depends)
 		appendArray("Make Dependencies", pkgInfo.MakeDepends)
-		appendArray("Provided packages", pkgInfo.Provides)
+		appendArray("Optional dependencies", pkgInfo.OptionalDepends)
 		appendArray("Conflicting packages", pkgInfo.Conflicts)
-		appendArray("Optional dependencies", pkgInfo.Optional)
+		appendArray("Provided packages", pkgInfo.Provides)
-		appendMap("Conditional dependencies", pkgInfo.ConditionalDepends)
+
-		appendMap("Conditional make dependencies", pkgInfo.ConditionalMakeDepends)
-		appendMap("Conditional conflicting packages", pkgInfo.ConditionalConflicts)
-		appendMap("Conditional optional dependencies", pkgInfo.ConditionalOptional)
-	}
-	if showInstallationReason {
-		if IsPackageInstalled(pkgInfo.Name, rootDir) {
-			ret = append(ret, "Installed: yes")
-			ret = append(ret, "Installation Reason: "+string(GetInstallationReason(pkgInfo.Name, rootDir)))
-		} else {
-			ret = append(ret, "Installed: no")
-		}
 	}
+	ret = append(ret, "Installation Reason: "+string(GetInstallationReason(pkgInfo.Name, rootDir)))
 	return strings.Join(ret, "\n")
 }
 
@@ -1016,7 +986,7 @@ func InstallPackage(filename, rootDir string, verbose, force, binaryPkgFromSrc,
 		if pkgInfo.Arch != "any" && pkgInfo.Arch != GetArch() {
 			return errors.New("cannot install a package with a different architecture")
 		}
-		if unresolved := CheckDependencies(pkgInfo, true, true, rootDir); len(unresolved) != 0 {
+		if unresolved := pkgInfo.CheckDependencies(pkgInfo.Type == "source", true, rootDir); len(unresolved) != 0 {
 			return errors.New("Could not resolve all dependencies. Missing " + strings.Join(unresolved, ", "))
 		}
 	}
@@ -1239,7 +1209,19 @@ func GetSourceScript(filename string) (string, error) {
 	return "", errors.New("package does not contain a source.sh file")
 }
 
-func CheckDependencies(pkgInfo *PackageInfo, checkMake, checkConditional bool, rootDir string) []string {
+func (pkgInfo *PackageInfo) GetAllDependencies(checkMake, checkOptional bool) []string {
+	allDepends := make([]string, 0)
+	allDepends = append(allDepends, pkgInfo.Depends...)
+	if checkMake {
+		allDepends = append(allDepends, pkgInfo.MakeDepends...)
+	}
+	if checkOptional {
+		allDepends = append(allDepends, pkgInfo.OptionalDepends...)
+	}
+	return allDepends
+}
+
+func (pkgInfo *PackageInfo) CheckDependencies(checkMake, checkOptional bool, rootDir string) []string {
 	var ret []string
 	for _, dependency := range pkgInfo.Depends {
 		if !IsPackageProvided(dependency, rootDir) {
@@ -1253,53 +1235,47 @@ func CheckDependencies(pkgInfo *PackageInfo, checkMake, checkConditional bool, r
 			}
 		}
 	}
-	if checkConditional {
+	if checkOptional {
-		for condition, dependencies := range pkgInfo.ConditionalDepends {
+		for _, dependency := range pkgInfo.OptionalDepends {
-			if !IsPackageInstalled(condition, rootDir) {
+			if !IsPackageProvided(dependency, rootDir) {
-				continue
+				ret = append(ret, dependency)
-			}
-			for _, dependency := range dependencies {
-				if !IsPackageProvided(dependency, rootDir) {
-					ret = append(ret, dependency)
-				}
-			}
-		}
-		if checkMake {
-			for condition, dependencies := range pkgInfo.ConditionalMakeDepends {
-				if !IsPackageInstalled(condition, rootDir) {
-					continue
-				}
-				for _, dependency := range dependencies {
-					if !IsPackageInstalled(dependency, rootDir) {
-						ret = append(ret, dependency)
-					}
-				}
 			}
 		}
 	}
+
 	return ret
 }
 
-func CheckConflicts(pkgInfo *PackageInfo, checkConditional bool, rootDir string) []string {
+func (pkgInfo *PackageInfo) CheckConflicts(rootDir string) []string {
 	var ret []string
 	for _, conflict := range pkgInfo.Conflicts {
 		if IsPackageInstalled(conflict, rootDir) {
 			ret = append(ret, conflict)
 		}
 	}
-	if checkConditional {
+	return ret
-		for condition, conflicts := range pkgInfo.ConditionalConflicts {
+}
-			if !IsPackageInstalled(condition, rootDir) {
+
+func (pkgInfo *PackageInfo) ResolveAll(resolved, unresolved *[]string, checkMake, checkOptional, ignoreInstalled bool, rootDir string) ([]string, []string) {
+	*unresolved = append(*unresolved, pkgInfo.Name)
+	for _, depend := range pkgInfo.GetAllDependencies(checkMake, checkOptional) {
+		if !slices.Contains(*resolved, depend) {
+			if slices.Contains(*unresolved, depend) || (ignoreInstalled && IsPackageInstalled(depend, rootDir)) {
 				continue
 			}
-			for _, conflict := range conflicts {
+			entry, _, err := GetRepositoryEntry(depend)
-				if IsPackageInstalled(conflict, rootDir) {
+			if err != nil {
-					ret = append(ret, conflict)
+				if !slices.Contains(*unresolved, depend) {
+					*unresolved = append(*unresolved, depend)
 				}
+				continue
 			}
+			entry.Info.ResolveAll(resolved, unresolved, checkMake, checkOptional, ignoreInstalled, rootDir)
 		}
 	}
-	return ret
+	*resolved = append(*resolved, pkgInfo.Name)
+	*unresolved = stringSliceRemove(*unresolved, pkgInfo.Name)
+	return *resolved, *unresolved
 }
 
 func IsPackageInstalled(pkg, rootDir string) bool {
@@ -1320,7 +1296,11 @@ func IsPackageProvided(pkg, rootDir string) bool {
 		if p == pkg {
 			return true
 		}
-		if slices.Contains(GetPackageInfo(p, rootDir, true).Provides, pkg) {
+		i := GetPackageInfo(p, rootDir, true)
+		if i == nil {
+			continue
+		}
+		if slices.Contains(i.Provides, pkg) {
 			return true
 		}
 	}

utils/repo_utils.go

@@ -0,0 +1,165 @@
+package utils
+
+import (
+	"errors"
+	"gopkg.in/yaml.v3"
+	"io"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+	"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"`
+}
+
+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
+	}
+
+	data := string(bytes)
+	for _, b := range strings.Split(data, "---") {
+		entry := RepositoryEntry{
+			Info: &PackageInfo{
+				Name:            "",
+				Description:     "",
+				Version:         "",
+				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: "",
+		}
+		err := yaml.Unmarshal([]byte(b), &entry)
+		if err != nil {
+			return err
+		}
+		repo.Entries[entry.Info.Name] = &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
+}