diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..485dee6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea
diff --git a/cmd/LICENSE b/cmd/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/cmd/LICENSE
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
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+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
diff --git a/cmd/cmd b/cmd/cmd
new file mode 100755
index 0000000..82814e8
Binary files /dev/null and b/cmd/cmd differ
diff --git a/cmd/main.go b/cmd/main.go
new file mode 100644
index 0000000..8c5f9a7
--- /dev/null
+++ b/cmd/main.go
@@ -0,0 +1,391 @@
+package main
+
+import (
+ "eon/common"
+ "eon/lib"
+
+ "bufio"
+ "bytes"
+ "fmt"
+ "io"
+ "os"
+ "regexp"
+ "strings"
+
+ "golang.org/x/term"
+
+ "github.com/dustin/go-humanize"
+ "github.com/fatih/color"
+)
+
+var logger = &common.DefaultLogger
+
+func main() {
+ if len(os.Args) < 2 {
+ fmt.Println("Usage: eon [args]")
+ os.Exit(1)
+ }
+
+ switch os.Args[1] {
+ case "help":
+ if len(os.Args) < 3 {
+ fmt.Println("Usage: eon help (list/info/install/remove/clean/repo/help) [args]")
+ os.Exit(1)
+ } else {
+ switch os.Args[2] {
+ case "list":
+ fmt.Println("Usage: eon list (remote/local)")
+ fmt.Println("- remote: lists packages available in the repositories.")
+ fmt.Println("- local: lists installed packages.")
+ case "info":
+ fmt.Println("Usage: eon info ")
+ fmt.Println("Shows information about a package.")
+ case "install":
+ fmt.Println("Usage: eon install []")
+ fmt.Println("Installs a package.")
+ case "remove":
+ fmt.Println("Usage: eon remove ")
+ fmt.Println("Removes a package.")
+ case "clean":
+ fmt.Println("Usage: eon clean")
+ fmt.Println("Removes unused dependencies.")
+ case "repo":
+ fmt.Println("Usage: eon repo (add/remove/list)")
+ fmt.Println("- add : adds a repository.")
+ fmt.Println("- remove : removes a repository.")
+ fmt.Println("- list: lists repositories.")
+ case "help":
+ fmt.Println("Usage: eon help (list/info/install/remove/clean/repo/help) [args]")
+ fmt.Println("Shows help.")
+ default:
+ fmt.Println(color.RedString("Unknown command: " + os.Args[2]))
+ os.Exit(1)
+ }
+ }
+ case "install":
+ var forceMode bool
+ var inMemoryMode bool
+ if len(os.Args) < 3 {
+ fmt.Println("Usage: eon install ")
+ os.Exit(1)
+ }
+ var localPackageList []string
+ fileInfos := make(map[string]os.FileInfo)
+ var repoPackageList []string
+ for _, pkg := range os.Args[2:] {
+ if !strings.HasPrefix(pkg, "-") {
+ fileInfo, err := os.Stat(pkg)
+ if err != nil {
+ if os.IsNotExist(err) {
+ // This unholy regex is a package name validator. It validates repository-name/package-name/1.0.0-prerelease.1+meta.1
+ // The regex is so unholy it breaks JetBrains' regex parser, so I had to disable it.
+ //goland:noinspection RegExpUnnecessaryNonCapturingGroup
+ match, err := regexp.Match(`^(?:([a-z0-9_-]+)/)?([a-z0-9_-]+)(?:/(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?)$`, []byte(pkg))
+ if err != nil {
+ fmt.Println(color.RedString("Failed to validate package name: " + err.Error()))
+ os.Exit(1)
+ }
+ if !match {
+ fmt.Println(color.RedString("Invalid package name: " + pkg))
+ os.Exit(1)
+ } else {
+ repoPackageList = append(repoPackageList, pkg)
+ }
+ }
+ } else {
+ localPackageList = append(localPackageList, pkg)
+ fileInfos[pkg] = fileInfo
+ }
+ } else {
+ switch pkg {
+ case "--force", "-f":
+ forceMode = true
+ case "--optimizeForSpeed", "-O":
+ inMemoryMode = true
+ }
+ }
+ }
+ // We contact the database before we print anything as to not break the formatting.
+ err := common.EstablishDBConnection(logger)
+ if err != nil {
+ fmt.Println(color.RedString("Failed to establish a connection to the database: " + err.Error()))
+ os.Exit(1)
+ }
+ // Ok. Let's give the user an overview of what we're going to do.
+ if len(localPackageList) > 0 || len(repoPackageList) > 0 {
+ fmt.Println("The following packages will be installed:")
+ width, _, err := term.GetSize(int(os.Stdout.Fd()))
+ if err != nil {
+ fmt.Println(color.RedString("Failed to get terminal width: " + err.Error()))
+ os.Exit(1)
+ }
+ if width < 42 {
+ fmt.Println(color.RedString("Terminal too small. Minimum required width: 42 characters."))
+ os.Exit(1)
+ }
+ for range width {
+ fmt.Print("=")
+ }
+ fmt.Print("\n ")
+ tableList := []string{"Package", "Architecture", "Version", "Repository", "Size", "Action"}
+ maxSize := (width - 6) / 6
+ for _, item := range tableList {
+ common.PrintWithEvenPadding(item, maxSize)
+ }
+ fmt.Print("\n")
+ for range width {
+ fmt.Print("=")
+ }
+ fmt.Print("\n")
+ var epkListLocal []common.InstallPackage
+ for _, pkg := range localPackageList {
+ var finalisedList []string
+ epkFile, err := os.Open(pkg)
+ if err != nil {
+ fmt.Println(color.RedString("Failed to open package: " + err.Error()))
+ os.Exit(1)
+ }
+
+ var displayData lib.EPKPreMap
+ var vagueErr error
+ var epkBytes bytes.Buffer
+ if !inMemoryMode {
+ displayData, err, vagueErr = lib.PreMapEPK(lib.StreamOrBytes{Stream: epkFile, IsStream: true}, fileInfos[pkg].Size())
+ } else {
+ _, err = io.Copy(bufio.NewWriter(&epkBytes), epkFile)
+ if err != nil {
+ fmt.Println(color.RedString("Failed to read package into memory: " + err.Error() +
+ ", have you tried disabling in-memory mode?"))
+ os.Exit(1)
+ }
+ err := epkFile.Close()
+ if err != nil {
+ fmt.Println(color.HiYellowString("Failed to close package file: " + err.Error() + ", memory leak possible."))
+ }
+ displayData, err, vagueErr = lib.PreMapEPK(lib.StreamOrBytes{Bytes: epkBytes.Bytes(), IsStream: false}, fileInfos[pkg].Size())
+ }
+ if err != nil || vagueErr != nil {
+ common.PreMapEPKHandleError(err, vagueErr, logger)
+ os.Exit(1)
+ }
+
+ version, exists, err := common.DefaultCheckEPKInDB(displayData.Name)
+ if err != nil {
+ fmt.Println(color.RedString("Failed to check for package in database: " + err.Error()))
+ }
+
+ // TODO: Implement some dependency management more-or-less here.
+
+ name := displayData.Name
+ architecture := displayData.Architecture
+ versionDisplay := displayData.Version.String()
+ repository := "Local file"
+ size := humanize.Bytes(uint64(displayData.Size))
+ action := "Install"
+ if exists {
+ if version.Compare(&displayData.Version) != -1 {
+ if !forceMode {
+ name = color.GreenString(name)
+ architecture = color.GreenString(architecture)
+ versionDisplay = color.GreenString(versionDisplay)
+ repository = color.GreenString(repository)
+ size = color.GreenString(size)
+ action = color.GreenString("Skip")
+ } else {
+ action = "Forced installation"
+ displayData.IsUpgrade = true
+ if !inMemoryMode {
+ epkListLocal = append(epkListLocal, common.InstallPackage{
+ StreamOrBytes: lib.StreamOrBytes{
+ Stream: epkFile,
+ IsStream: true,
+ },
+ EPKPreMap: &displayData,
+ LocalFile: true,
+ })
+ } else {
+ epkListLocal = append(epkListLocal, common.InstallPackage{
+ StreamOrBytes: lib.StreamOrBytes{
+ Bytes: epkBytes.Bytes(),
+ IsStream: false,
+ },
+ EPKPreMap: &displayData,
+ LocalFile: true,
+ })
+ }
+ }
+ } else {
+ action = "Upgrade"
+ displayData.IsUpgrade = true
+ if !inMemoryMode {
+ epkListLocal = append(epkListLocal, common.InstallPackage{
+ StreamOrBytes: lib.StreamOrBytes{
+ Stream: epkFile,
+ IsStream: true,
+ },
+ EPKPreMap: &displayData,
+ LocalFile: true,
+ })
+ } else {
+ epkListLocal = append(epkListLocal, common.InstallPackage{
+ StreamOrBytes: lib.StreamOrBytes{
+ Bytes: epkBytes.Bytes(),
+ IsStream: false,
+ },
+ EPKPreMap: &displayData,
+ LocalFile: true,
+ })
+ }
+ }
+ } else {
+ displayData.IsUpgrade = false
+ if !inMemoryMode {
+ epkListLocal = append(epkListLocal, common.InstallPackage{
+ StreamOrBytes: lib.StreamOrBytes{
+ Stream: epkFile,
+ IsStream: true,
+ },
+ EPKPreMap: &displayData,
+ LocalFile: true,
+ })
+ } else {
+ epkListLocal = append(epkListLocal, common.InstallPackage{
+ StreamOrBytes: lib.StreamOrBytes{
+ Bytes: epkBytes.Bytes(),
+ IsStream: false,
+ },
+ EPKPreMap: &displayData,
+ LocalFile: true,
+ })
+ }
+ }
+
+ finalisedList = append(finalisedList, name)
+ finalisedList = append(finalisedList, architecture)
+ finalisedList = append(finalisedList, versionDisplay)
+ finalisedList = append(finalisedList, repository)
+ finalisedList = append(finalisedList, size)
+ finalisedList = append(finalisedList, action)
+ fmt.Print(" ")
+ for _, item := range finalisedList {
+ common.PrintWithEvenPadding(item, maxSize)
+ }
+ fmt.Print("\n")
+ }
+ //for _, pkg := range repoPackageList {
+ // var finalisedList []string
+ // lib.SearchRepository()
+ //}
+ for range width {
+ fmt.Print("=")
+ }
+ fmt.Print("\n")
+ if len(epkListLocal) > 0 {
+ response := logger.LogFunc(lib.Log{
+ Level: "INFO",
+ Content: "Proceed with installation (y/n)?",
+ Prompt: true,
+ PlaySound: true,
+ })
+ if strings.ToLower(response) == "y" {
+ // We hide the cursor because it makes the progress bar look weird and other package managers hide
+ // it during installation. For some reason, it builds suspense. Or it does with me anyway, when
+ // a program hides the cursor, it makes me think twice than to Ctrl+C it :P
+ // - Arzumify
+ fmt.Print("\033[?25l")
+ // Time to install things.
+ for _, streamOrBytesAndPreMap := range epkListLocal {
+ metadata, err, vagueErr := lib.FullyMapMetadata(streamOrBytesAndPreMap.StreamOrBytes,
+ streamOrBytesAndPreMap.EPKPreMap, common.DefaultGetFingerprintFromDB,
+ common.DefaultAddFingerprintToDB, logger)
+ if err != nil || vagueErr != nil {
+ common.FullyMapMetadataHandleError(err, vagueErr, logger)
+ }
+ // Install the package.
+ tempDir, err, vagueErr := lib.InstallEPK(streamOrBytesAndPreMap.StreamOrBytes,
+ metadata, streamOrBytesAndPreMap.EPKPreMap, common.DefaultAddEPKToDB, logger)
+ if err != nil || vagueErr != nil {
+ common.InstallEPKHandleError(tempDir, err, vagueErr, logger)
+ }
+ // Done!
+ fmt.Println("Installed package: " + streamOrBytesAndPreMap.EPKPreMap.Name)
+ }
+ // We show the cursor again because we're done with the progress bar.
+ // We show the cursor again because we're done with the progress bar.
+ fmt.Print("\033[?25h")
+ } else {
+ fmt.Println("Installation cancelled.")
+ os.Exit(1)
+ }
+ } else {
+ fmt.Println("No packages left to install. To force re-install / downgrade, use the --force flag, " +
+ "though this may result in breakage.")
+ os.Exit(0)
+ }
+ } else {
+ fmt.Println("No packages to install.")
+ os.Exit(0)
+ }
+ case "repo":
+ if len(os.Args) < 3 {
+ fmt.Println("Usage: eon repo (add/remove/list)")
+ os.Exit(1)
+ }
+
+ switch os.Args[2] {
+ case "add":
+ if len(os.Args) < 4 {
+ fmt.Println("Usage: eon repo add ")
+ os.Exit(1)
+ } else {
+ err := common.EstablishDBConnection(logger)
+ if err != nil {
+ fmt.Println(color.RedString("Failed to establish a connection to the database: " + err.Error()))
+ os.Exit(1)
+ }
+ err, vagueErr := lib.AddRepository(os.Args[3], common.DefaultAddRepositoryToDB, common.DefaultGetFingerprintFromDB, common.DefaultAddFingerprintToDB, common.DefaultAddRemotePackageToDB, logger)
+ if err != nil || vagueErr != nil {
+ common.AddRepositoryHandleError(err, vagueErr, logger)
+ }
+ }
+ case "remove":
+ if len(os.Args) < 4 {
+ fmt.Println("Usage: eon repo remove ")
+ os.Exit(1)
+ } else {
+ err := common.EstablishDBConnection(logger)
+ if err != nil {
+ fmt.Println(color.RedString("Failed to establish a connection to the database: " + err.Error()))
+ os.Exit(1)
+ }
+ err, vagueErr := lib.RemoveRepository(os.Args[3], common.DefaultRemoveRepositoryFromDB, logger)
+ if err != nil || vagueErr != nil {
+ common.RemoveRepositoryHandleError(err, vagueErr, logger)
+ }
+ }
+ case "list":
+ err := common.EstablishDBConnection(logger)
+ if err != nil {
+ fmt.Println(color.RedString("Failed to establish a connection to the database: " + err.Error()))
+ os.Exit(1)
+ }
+ repos, err := common.DefaultListRepositoriesInDB()
+ if err != nil {
+ fmt.Println(color.RedString("Failed to get repositories: " + err.Error()))
+ os.Exit(1)
+ }
+ if len(repos) == 0 {
+ fmt.Println("No repositories.")
+ } else {
+ fmt.Println("Repositories:")
+ for _, repo := range repos {
+ fmt.Println("\n" + repo.Name + ":\n" + " URL: " + repo.URL + "\n Owner: " + repo.Owner)
+ }
+ fmt.Println()
+ }
+ }
+ default:
+ fmt.Println(color.RedString("Unknown or unimplemented command: " + os.Args[1]))
+ os.Exit(1)
+ }
+}
diff --git a/common/main.go b/common/main.go
new file mode 100644
index 0000000..6a72a30
--- /dev/null
+++ b/common/main.go
@@ -0,0 +1,956 @@
+package common
+
+import (
+ "encoding/binary"
+ "eon/lib"
+
+ "bytes"
+ "errors"
+ "fmt"
+ "os"
+ "plugin"
+ "regexp"
+ "strconv"
+ "strings"
+ "time"
+
+ "crypto/ed25519"
+ "database/sql"
+ "math/big"
+
+ "golang.org/x/term"
+
+ "github.com/Masterminds/semver"
+ "github.com/fatih/color"
+ "modernc.org/sqlite"
+)
+
+type InstallPackage struct {
+ LocalFile bool
+ Url string
+ StreamOrBytes lib.StreamOrBytes
+ EPKPreMap *lib.EPKPreMap
+}
+
+type PluginInfo struct {
+ Name string
+ HasErrHandler bool
+ HasVagueErr bool
+ OverridesExisting bool
+}
+
+type Plugin struct {
+ Info PluginInfo
+ MainFunc func(version string, dbVersion string, args []string, conn *sql.DB, logger *lib.Logger) (etc map[string]interface{}, err error, vagueErr error)
+ ErrHandler func(etc map[string]interface{}, err error, vagueErr error, logger *lib.Logger)
+}
+
+var conn *sql.DB
+var dbVersion = semver.MustParse("1.0.0-beta.2")
+
+var DefaultLogger = lib.Logger{
+ LogFunc: func(log lib.Log) string {
+ if log.PlaySound {
+ fmt.Print("\a")
+ }
+ switch log.Level {
+ case "WARN":
+ fmt.Println(color.YellowString(log.Content))
+ case "ERROR":
+ fmt.Println(color.HiYellowString(log.Content))
+ case "CRITICAL":
+ fmt.Println(color.HiRedString(log.Content))
+ case "FATAL":
+ fmt.Println(color.RedString(log.Content))
+ os.Exit(1)
+ case "PROGRESS":
+ // Maths time! We need to calculate the percentage of the progress bar.
+ // Convert the total and progress to big.Floats so we can do division.
+ floatTotal := new(big.Float)
+ floatProgress := new(big.Float)
+ floatTotal.SetInt(log.Total)
+ floatProgress.SetInt(log.Progress)
+ // Calculate the fraction we need to multiply by 100 to get the percentage.
+ percentageBig := new(big.Float).Quo(floatProgress, floatTotal)
+ percentage, _ := percentageBig.Float64()
+ // Get the terminal width so we can calculate the width of the progress bar.
+ width, _, err := term.GetSize(int(os.Stdout.Fd()))
+ if err != nil {
+ fmt.Println(color.RedString("Failed to get terminal width: " + err.Error()))
+ os.Exit(1)
+ }
+ // Calculate the percentage in text form.
+ percentageText := " " + strconv.Itoa(int(percentage*100)) + "%"
+ // We need to give the percentage text a bit of padding so it doesn't look weird.
+ switch len(percentageText) {
+ case 3:
+ percentageText = " " + percentageText + " "
+ case 4:
+ percentageText = percentageText + " "
+ }
+ // Print the percentage text and the beginning of the progress bar.
+ fmt.Print("\r" + percentageText + " [")
+
+ // Calculate how much of the bar should be filled.
+ targetWidth := int(float64(width-8) * percentage)
+ // Print the filled part of the bar.
+ for range targetWidth {
+ fmt.Print("=")
+ }
+ // If it isn't 100%, print the arrow.
+ if int(percentage) != 1 {
+ fmt.Print(">")
+ }
+ // Print the empty part of the bar.
+ for range width - targetWidth - 9 {
+ fmt.Print(" ")
+ }
+ // And voilà! Cap the bar off. Don't put a space here, because it causes a newline in some terminals.
+ if log.Overwrite {
+ fmt.Print("]")
+ } else {
+ fmt.Print("]\n")
+ }
+ default:
+ fmt.Println(log.Content)
+ }
+ if log.Prompt {
+ fmt.Print(": ")
+ var userInput string
+ _, err := fmt.Scanln(&userInput)
+ if err != nil {
+ fmt.Println(color.RedString("Failed to read input: " + err.Error()))
+ os.Exit(1)
+ } else {
+ return userInput
+ }
+ }
+ return ""
+ },
+ PromptSupported: true,
+ ProgressSupported: true,
+}
+
+func LoadPlugin(pluginName string, logger *lib.Logger) (Plugin, error) {
+ // Check the plugin's signature
+ // Load the plugin file
+ pluginFile, err := os.ReadFile("/var/lib/eon/plugins/" + pluginName + ".so")
+ if err != nil {
+ return Plugin{}, err
+ }
+ // Load the signature file
+ bypassSignature := false
+ sigFile, err := os.ReadFile("/var/lib/eon/plugins/" + pluginName + ".eps")
+ if err != nil {
+ if errors.Is(err, os.ErrNotExist) {
+ response := logger.LogFunc(lib.Log{
+ Level: "WARN",
+ Content: "Plugin " + pluginName + " is not signed. That means that this code is UNTRUSTED and may be " +
+ "MALWARE. This can seriously harm your system! Only proceed if you trust the plugin author, and " +
+ "are absolutely 100% sure it is from them! Do you want to load the plugin anyway (y/n)?",
+ Prompt: true,
+ PlaySound: true,
+ })
+ if strings.ToLower(response) != "y" {
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Plugin " + pluginName + " is not signed. Refusing to load the plugin. Glad you have some " +
+ "common sense!",
+ Prompt: false,
+ })
+ } else {
+ // This is your final warning before you blow your system to bits.
+ // If you are a confused user looking through the source code, seriously, DO NOT load the plugin!
+ // Any good plugin author should sign their plugins. Even if you are testing a plugin, you should
+ // sign it. If your friend doesn't sign their plugin, tell them to sign it!
+ finalWarning := logger.LogFunc(lib.Log{
+ Level: "WARN",
+ Content: "Final warning. Is what you're doing really worth risking your entire system? If someone " +
+ "is telling you to bypass this warning, they are probably LYING! Are you SURE you know what " +
+ "you're doing (if you do, you probably won't be here)? If you would like to load the plugin, " +
+ "please type the following (case sensitive): \"Yes, I know what I'm doing, no one is telling me " +
+ "to do this, destroy my system!\". Otherwise, type anything else.",
+ Prompt: true,
+ PlaySound: true,
+ })
+ if finalWarning != "Yes, I know what I'm doing, no one is telling me to do this, destroy my system!" {
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Plugin " + pluginName + " is not signed. Refusing to load the plugin. Glad you have " +
+ "some common sense!",
+ Prompt: false,
+ })
+ } else {
+ logger.LogFunc(lib.Log{
+ Level: "WARN",
+ Content: "I'll give you 5 seconds to Ctrl+C out of this. If you don't, you're on your own.",
+ Prompt: false,
+ })
+ time.Sleep(5 * time.Second)
+ logger.LogFunc(lib.Log{
+ Level: "WARN",
+ Content: "You asked for it. Loading plugin " + pluginName + " without a signature. Don't say I " +
+ "didn't warn you.",
+ Prompt: false,
+ })
+ bypassSignature = true
+ }
+ }
+ }
+ }
+ // Get the public key from the database
+ if !bypassSignature {
+ err = conn.QueryRow("SELECT fingerprint FROM keys WHERE owner = ?", string(sigFile[96:])).Scan(&sigFile)
+ if err != nil {
+ if errors.Is(err, sql.ErrNoRows) {
+ fingerprint := lib.ByteToFingerprint(sigFile[:32])
+ logger.LogFunc(lib.Log{
+ Level: "WARN",
+ Content: "The public key for the plugin " + pluginName + " is not in the database:\n " + string(sigFile[96:]) + " " + fingerprint + "\n Do you want to add it to the database (y/n)?",
+ Prompt: true,
+ })
+ }
+ }
+ if ed25519.Verify(sigFile[:32], pluginFile, sigFile[32:96]) {
+ return Plugin{}, errors.New("invalid signature")
+ }
+ }
+ // Load the plugin. Unfortunately, there seems to be no way to load a plugin from memory, so we have to use the
+ // filesystem.
+ loadedPlugin, err := plugin.Open("/var/lib/eon/plugins/" + pluginName + ".so")
+ if err != nil {
+ return Plugin{}, err
+ }
+ // Look up the Info function
+ infoSymbol, err := loadedPlugin.Lookup("Info")
+ if err != nil {
+ return Plugin{}, err
+ }
+ // Assert the Info function to the correct type
+ infoFunction, ok := infoSymbol.(func() PluginInfo)
+ if !ok {
+ return Plugin{}, errors.New("plugin " + pluginName + " does not have an Info function")
+ }
+ // Get the plugin info
+ pluginInfo := infoFunction()
+ // Look up the Main function
+ mainSymbol, err := loadedPlugin.Lookup("Main")
+ if err != nil {
+ return Plugin{}, err
+ }
+ // Assert the Main function to the correct type
+ main, ok := mainSymbol.(func(version string, dbVersion string, args []string, conn *sql.DB, logger *lib.Logger) (etc map[string]interface{}, err error, vagueErr error))
+ if !ok {
+ return Plugin{}, errors.New("plugin " + pluginName + " does not have a Main function")
+ }
+ // Return the plugin struct
+ return Plugin{
+ Info: pluginInfo,
+ MainFunc: main,
+ }, nil
+}
+
+func PluginInstalled(pluginName string) bool {
+ _, err := os.Stat("/var/lib/eon/plugins/" + pluginName + ".so")
+ if err != nil {
+ return false
+ } else {
+ return true
+ }
+}
+
+func InitDB(conn *sql.DB) error {
+ _, err := conn.Exec("DROP TABLE IF EXISTS global;" +
+ "DROP TABLE IF EXISTS packages;" +
+ "DROP TABLE IF EXISTS keys;" +
+ "DROP TABLE IF EXISTS repositories;" +
+ "DROP TABLE IF EXISTS remotePackages;")
+ if err != nil {
+ return err
+ }
+
+ // Huge query moment. This is way too big to read comfortably, but too bad! It breaks the Jetbrains SQL formatter if
+ // I break it into multiple lines.
+ _, err = conn.Exec("CREATE TABLE packages (name TEXT NOT NULL UNIQUE, description TEXT NOT NULL, longDescription TEXT NOT NULL, version TEXT NOT NULL, author TEXT NOT NULL, license TEXT NOT NULL, architecture TEXT NOT NULL, size INTEGER NOT NULL, dependencies TEXT NOT NULL, removeScript TEXT NOT NULL, hasRemoveScript BOOLEAN NOT NULL, isDependency BOOLEAN NOT NULL DEFAULT false, repository TEXT)")
+ if err != nil {
+ return err
+ }
+
+ // We store the RSA fingerprint of a public key so we can alert if a key is already in the database.
+ _, err = conn.Exec("CREATE TABLE keys (fingerprint BLOB NOT NULL, owner TEXT NOT NULL UNIQUE)")
+ if err != nil {
+ return err
+ }
+
+ _, err = conn.Exec("CREATE TABLE repositories (url TEXT NOT NULL UNIQUE, name TEXT NOT NULL UNIQUE, owner TEXT NOT NULL, description TEXT NOT NULL)")
+ if err != nil {
+ return err
+ }
+
+ // Way to big. Blame IntelliJ.
+ _, err = conn.Exec("CREATE TABLE remotePackages (name TEXT NOT NULL UNIQUE, author TEXT NOT NULL, description TEXT NOT NULL, version TEXT NOT NULL, architecture TEXT NOT NULL, size BLOB NOT NULL, dependencies TEXT NOT NULL, path TEXT NOT NULL, arch TEXT NOT NULL, hash TEXT NOT NULL, repository TEXT NOT NULL)")
+ if err != nil {
+ return err
+ }
+
+ // Having exists here makes sure that there is only one global row in the table. This is a bit of a hack,
+ // but it's the only way to make sure that the version and endian-ness are always part of the database.
+
+ // Note that this is the only hack in this program (so far)! I feel somewhat proud, especially since it's less of
+ // a hack and more not utilizing the full power of SQL.
+ // - Arzumify
+ _, err = conn.Exec("CREATE TABLE global (version TEXT NOT NULL, uniquenessCheck BOOLEAN NOT NULL UNIQUE CHECK (uniquenessCheck = true) DEFAULT true)")
+ if err != nil {
+ return err
+ }
+
+ // We insert global last so that if the program crashes, the database is not marked as initialized.
+ _, err = conn.Exec("INSERT INTO global (version) VALUES (?)",
+ dbVersion.String())
+ if err != nil {
+ return err
+ }
+
+ return nil
+}
+
+// EstablishDBConnection establishes a connection to the database. If the database does not exist, it will be created.
+func EstablishDBConnection(logger *lib.Logger) error {
+ _, err := os.Stat("/var/lib/eon/packages.db")
+ if err != nil {
+ if errors.Is(err, os.ErrNotExist) {
+ err := os.MkdirAll("/var/lib/eon", 0755)
+ if err != nil {
+ return err
+ }
+ }
+ }
+
+ conn, err = sql.Open("sqlite", "/var/lib/eon/packages.db")
+ if err != nil {
+ return err
+ }
+
+ var version string
+ err = conn.QueryRow("SELECT version FROM global").Scan(&version)
+ if err != nil {
+ if err.(*sqlite.Error).Code() == 1 || errors.Is(err, sql.ErrNoRows) {
+ // Initialize database
+ err := InitDB(conn)
+ if err != nil {
+ return err
+ }
+ } else {
+ return err
+ }
+ } else {
+ // Check version
+ semanticVersion, err := semver.NewVersion(version)
+ if err != nil {
+ return err
+ }
+
+ isCurrentVersion := semanticVersion.Compare(dbVersion)
+ if isCurrentVersion < 0 {
+ if !PluginInstalled("database-migration") {
+ // Warn the user that the database is outdated
+ if logger.PromptSupported {
+ response := logger.LogFunc(lib.Log{
+ Level: "WARN",
+ Content: "The database is outdated and may not be compatible with the current version of Eon. " +
+ "The database migration plugin is not installed. Would you like to reset the database (y/n)?",
+ Prompt: true,
+ })
+ if strings.ToLower(response) == "y" {
+ err := InitDB(conn)
+ if err != nil {
+ return err
+ }
+ } else {
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "The database is corrupted and cannot be used. Please reset the database.",
+ Prompt: false,
+ })
+ os.Exit(1)
+ }
+ } else {
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "The database is corrupted and cannot be used. Please reset the database.",
+ Prompt: false,
+ })
+ os.Exit(1)
+ }
+ } else {
+ logger.LogFunc(lib.Log{
+ Level: "INFO",
+ Content: "Loading plugin for database migration... All logs will be returned by the plugin until the migration is complete.",
+ Prompt: false,
+ })
+ loadedPlugin, err := LoadPlugin("database-migration", logger)
+ if err != nil {
+ return err
+ }
+ etc, err, vagueErr := loadedPlugin.MainFunc(dbVersion.String(), version, nil, conn, logger)
+ if err != nil || vagueErr != nil {
+ if loadedPlugin.Info.HasErrHandler {
+ loadedPlugin.ErrHandler(etc, err, vagueErr, logger)
+ return errors.New("plugin " + loadedPlugin.Info.Name + "'s error handler did not stop program execution")
+ } else {
+ if loadedPlugin.Info.HasVagueErr {
+ return errors.New(vagueErr.Error() + ": " + err.Error())
+ } else {
+ return err
+ }
+ }
+ } else {
+ logger.LogFunc(lib.Log{
+ Level: "INFO",
+ Content: "Database migrated (hopefully). Please consult the logs returned by the plugin for more information",
+ Prompt: false,
+ })
+ }
+ }
+ } else if isCurrentVersion > 0 {
+ // Warn the user that the database is ahead of the current version of Eon
+ logger.LogFunc(lib.Log{
+ Level: "WARN",
+ Content: "The database is ahead of the current version of Eon. This may cause compatibility issues",
+ Prompt: false,
+ })
+ }
+ }
+ return nil
+}
+
+func DefaultAddEPKToDB(metadata *lib.Metadata, removeScript []byte, dependency bool, hasRemoveScript bool, size int64) error {
+ // If it already exists, delete it. This may happen in a force-install scenario.
+ _, err := conn.Exec("DELETE FROM packages WHERE name = ?", metadata.Name)
+ if err != nil {
+ return err
+ }
+
+ var dependencies string
+ if len(metadata.Dependencies) > 0 {
+ // This is the world's most basic JSON marshaller :P
+ // - Arzumify
+ dependencies = "[" + strings.Join(metadata.Dependencies, ", ") + "]"
+ } else {
+ // Best to make sure that the dependencies are always a JSON array, even if it's empty. Strings.Join might mess
+ // it up by adding whitespace or something.
+ dependencies = "[]"
+ }
+
+ // Another fat unreadable line so Jetbrains doesn't break the SQL formatter. Too bad!
+ // But seriously though why doesn't Jetbrains support this? It's literally their own IDE which tells me to not make
+ // super-long lines, but then doesn't support it.
+ // And I pay huge amounts of money for this.
+
+ // Not that I'm complaining or anything.
+ // - Arzumify
+ _, err = conn.Exec("INSERT INTO packages (name, description, longDescription, version, author, license, architecture, size, dependencies, removeScript, hasRemoveScript, isDependency) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
+ metadata.Name, metadata.Description, metadata.LongDescription, metadata.Version.String(), metadata.Author,
+ metadata.License, metadata.Architecture, size, dependencies, string(removeScript), hasRemoveScript, dependency)
+ if err != nil {
+ return err
+ }
+
+ // Note I never complain a lot in lib/main.go, because that's the one other people will probably use.
+ // common/main.go is very tailored towards cmd/main.go, and is probably worth nothing to anything other than CLIs
+ // which like to use my style of logging, error handling, database management, progress bars, etc.
+ // - Arzumify
+ // P.S I sign off comments which have my personal thoughts. I do write other ones, but they're usually more formal
+ // and contain less of... me.
+ // Ok I promise I'll stop now and actually let the compiler compile.
+
+ return nil
+}
+
+// DefaultCheckEPKInDB checks if an EPK is in the database.
+func DefaultCheckEPKInDB(name string) (*semver.Version, bool, error) {
+ var versionString string
+ err := conn.QueryRow("SELECT version FROM packages WHERE name = ?", name).Scan(&versionString)
+ if err != nil {
+ if errors.Is(err, sql.ErrNoRows) {
+ return &semver.Version{}, false, nil
+ }
+ return &semver.Version{}, false, err
+ }
+ version, err := semver.NewVersion(versionString)
+ if err != nil {
+ return &semver.Version{}, true, err
+ }
+ return version, true, nil
+}
+
+func DefaultGetEPKFromDB(name string) (lib.Metadata, string, bool, bool, int64, error) {
+ var metadata lib.Metadata
+ var removeScript string
+ var dependency bool
+ var versionString string
+ var dependencies string
+ var hasRemoveScript bool
+ var size int64
+ err := conn.QueryRow("SELECT name, description, longDescription, version, author, license, architecture, size, "+
+ "dependencies, removeScript, hasRemoveScript, isDependency FROM packages WHERE name = ?", name).Scan(
+ &metadata.Name, &metadata.Description, &metadata.LongDescription, &versionString, &metadata.Author,
+ &metadata.License, &metadata.Architecture, &size, &dependencies, &removeScript, &hasRemoveScript,
+ &dependency)
+ if err != nil {
+ return lib.Metadata{}, "", false, false, 0, err
+ }
+ // This is the world's most basic JSON unmarshaller :P
+ // - Arzumify
+ metadata.Dependencies = strings.Split(strings.TrimSuffix(strings.TrimPrefix(dependencies, "["), "]"), ", ")
+ version, err := semver.NewVersion(versionString)
+ if err != nil {
+ return lib.Metadata{}, "", false, false, 0, err
+ }
+ // For some reason NewVersion returns a pointer
+ metadata.Version = *version
+ return metadata, removeScript, dependency, hasRemoveScript, size, nil
+}
+
+func DefaultAddFingerprintToDB(fingerprint []byte, owner string, replace bool) error {
+ if replace {
+ _, err := conn.Exec("UPDATE keys SET owner = ? AND fingerprint = ? WHERE owner = ? OR fingerprint = ?", owner, fingerprint, owner, fingerprint)
+ if err != nil {
+ return err
+ } else {
+ return nil
+ }
+ } else {
+ _, err := conn.Exec("INSERT INTO keys (fingerprint, owner) VALUES (?, ?)", fingerprint, owner)
+ if err != nil {
+ return err
+ } else {
+ return nil
+ }
+ }
+}
+
+func DefaultGetFingerprintFromDB(fingerprint []byte, author string) (bool, bool, bool, error) {
+ var authorCheck string
+ var fingerprintCheck []byte
+ err := conn.QueryRow("SELECT owner, fingerprint FROM keys WHERE owner = ? OR fingerprint = ?", author, fingerprint).Scan(&authorCheck, &fingerprintCheck)
+ if err != nil {
+ if errors.Is(err, sql.ErrNoRows) {
+ return false, false, false, nil
+ }
+ return false, false, false, err
+ } else {
+ if authorCheck == author && bytes.Equal(fingerprintCheck, fingerprint) {
+ return true, true, true, nil
+ } else if authorCheck == author {
+ return true, false, true, nil
+ } else {
+ return true, true, false, nil
+ }
+ }
+}
+
+func DefaultAddRepositoryToDB(repository lib.Repository) error {
+ _, err := conn.Exec("INSERT INTO repositories (url, name, owner, description) VALUES (?, ?, ?, ?)",
+ repository.URL, repository.Name, repository.Owner, repository.Description)
+ if err != nil {
+ return err
+ }
+ return nil
+}
+
+func DefaultRemoveRepositoryFromDB(repository string) error {
+ _, err := conn.Exec("DELETE FROM repositories WHERE name = ?", repository)
+ if err != nil {
+ return err
+ }
+
+ _, err = conn.Exec("DELETE FROM remotePackages WHERE repository = ?", repository)
+ if err != nil {
+ return err
+ }
+ return nil
+}
+
+func DefaultListRepositoriesInDB() ([]lib.Repository, error) {
+ rows, err := conn.Query("SELECT url, name, owner FROM repositories")
+ if err != nil {
+ return []lib.Repository{}, err
+ }
+ var repositories []lib.Repository
+ for rows.Next() {
+ var url, name, owner string
+ err := rows.Scan(&url, &name, &owner)
+ if err != nil {
+ return []lib.Repository{}, err
+ }
+ repositories = append(repositories, lib.Repository{Name: name, URL: url, Owner: owner})
+ }
+ return repositories, nil
+}
+
+func DefaultAddRemotePackageToDB(repository string, remoteEPK lib.RemoteEPK) error {
+ var dependencies string
+ // This is the world's most basic JSON marshaller :P
+ // - Arzumify
+ if len(remoteEPK.Dependencies) > 0 {
+ dependencies = "[" + strings.Join(remoteEPK.Dependencies, ", ") + "]"
+ } else {
+ // Best to make sure that the dependencies are always a JSON array, even if it's empty. Strings.Join might mess
+ // it up by adding whitespace or something.
+ dependencies = "[]"
+ }
+
+ // We use little-endian because big-endianness is never used on 99% of systems. Also, byte order is a myth.
+ hashBytes := make([]byte, 8)
+ binary.LittleEndian.PutUint64(hashBytes, remoteEPK.EPKHash)
+
+ _, err := conn.Exec("INSERT INTO remotePackages (name, author, description, version, architecture, size, dependencies, path, arch, hash, repository) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
+ remoteEPK.Name, remoteEPK.Author, remoteEPK.Description, remoteEPK.Version.String(), remoteEPK.Architecture,
+ remoteEPK.CompressedSize, dependencies, remoteEPK.Path, remoteEPK.Arch, hashBytes, repository)
+ if err != nil {
+ return err
+ }
+
+ return nil
+}
+
+func PrintWithEvenPadding(item string, maxSize int) {
+ var printItem string
+ // Make sure green escape sequences are not counted in the length by using a regex.
+ noGreenEscape := regexp.MustCompile(`\x1b\[32m|\x1b\[0m`)
+ // Minus 2 to ensure we have space for padding.
+ if len(noGreenEscape.ReplaceAllString(item, "")) > maxSize-2 {
+ // We have already checked that the terminal is wide enough, so we shouldn't have to worry about
+ // maxSize being less than 6.
+ // It's minus 5 because we need to add "..." to the end of the string and have space for padding.
+ printItem = item[:maxSize-5] + "..."
+ } else {
+ printItem = item
+ }
+ // Now we need to check how much space we have left for padding.
+ padding := maxSize - len(noGreenEscape.ReplaceAllString(printItem, ""))
+ // Check if padding is odd or even.
+ if padding%2 == 0 {
+ // Padding is even.
+ for range padding / 2 {
+ fmt.Print(" ")
+ }
+ fmt.Print(printItem)
+ for range padding / 2 {
+ fmt.Print(" ")
+ }
+ } else {
+ // Padding is odd.
+ for range (padding + 1) / 2 {
+ fmt.Print(" ")
+ }
+ fmt.Print(printItem)
+ for range (padding - 1) / 2 {
+ fmt.Print(" ")
+ }
+ }
+}
+
+// I hate the vagueError system - it feels too much like a hack, but there's no chance in hell I'm going to find every
+// error from every library I use and make a HandleError function for it. I'm not that insane.
+// Anyway I should put a useful formal comment so that people using IntelliSense or whatever it's called in VSCode can
+// see what this function does.
+// - Arzumify
+
+// PreMapEPKHandleError handles errors that occur during the mapping of an EPKs display data.
+func PreMapEPKHandleError(err error, vagueErr error, logger *lib.Logger) {
+ switch {
+ case errors.Is(vagueErr, lib.ErrPreMapEPKFailedToReadError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to read file: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrPreMapEPKNotEPKError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "The specified file is not an EPK.",
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrPreMapEPKInvalidEndianError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "The specified file is corrupted or invalid: invalid endian",
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrPreMapEPKCouldNotParseJSONError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to parse metadata JSON: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrPreMapEPKCouldNotMapJSONError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to map metadata JSON: " + err.Error(),
+ Prompt: false,
+ })
+ }
+}
+
+// FullyMapMetadataHandleError handles errors that occur during the mapping of an EPK file.
+func FullyMapMetadataHandleError(err error, vagueErr error, logger *lib.Logger) {
+ switch {
+ case errors.Is(vagueErr, lib.ErrFullyMapMetadataFailedToReadError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to read file: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrFullyMapMetadataFailedToJumpError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to jump to metadata: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrFullyMapMetadataFailedToAddFingerprintError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to add fingerprint to database: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrFullyMapMetadataFailedToGetFingerprintError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to get fingerprint from database: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrFullyMapMetadataInvalidSignatureError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "The specified file is corrupted or invalid: signature mismatch",
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrFullyMapMetadataCouldNotMapJSONError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to map metadata JSON: " + err.Error(),
+ Prompt: false,
+ })
+ }
+}
+
+// InstallEPKHandleError handles errors that occur during the installation of an EPK file.
+func InstallEPKHandleError(tempDir string, err error, vagueErr error, logger *lib.Logger) {
+ doNotRemoveTempDir := false
+ switch {
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotCreateTempDirError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to create temporary directory: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotCreateZStandardReaderError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to create ZStandard reader: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotDecompressTarArchiveError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to decompress tar archive: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotCreateDirError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to create directory: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotStatDirError):
+ logger.LogFunc(lib.Log{
+ Level: "ERROR",
+ Content: "Could not get file information about directory: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotStatFileError):
+ logger.LogFunc(lib.Log{
+ Level: "ERROR",
+ Content: "Could not get file information about file: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotCreateFileError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to create file: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotCloseTarReaderError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to close tar reader: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotStatHookError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Could not get file information about hook: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotRunHookError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to run hook: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotAddEPKToDBError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to add EPK to database: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrInstallEPKCouldNotRemoveTempDirError):
+ logger.LogFunc(lib.Log{
+ Level: "CRITICAL",
+ Content: "Failed to remove temporary directory: " + err.Error() + ", please remove the directory " + tempDir + " manually",
+ Prompt: false,
+ })
+ doNotRemoveTempDir = true
+ }
+ if doNotRemoveTempDir {
+ err := os.RemoveAll(tempDir)
+ if err != nil {
+ logger.LogFunc(lib.Log{
+ Level: "CRITICAL",
+ Content: "Failed to remove temporary directory: " + err.Error() + ", please remove the directory " + tempDir + " manually",
+ Prompt: false,
+ })
+ }
+ }
+}
+
+func AddRepositoryHandleError(err error, vagueErr error, logger *lib.Logger) {
+ switch {
+ case errors.Is(vagueErr, lib.ErrAddRepositoryCannotCreateRequestError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to create request: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryCannotSendRequestError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to send request: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryUnexpectedStatusCodeError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Unexpected status code: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryCannotReadResponseError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to read response: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryInvalidMagicError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Invalid magic: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryCannotHashError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to copy file to hash: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryUnmarshalMetadataError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to unmarshal metadata: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrFullyMapMetadataFailedToGetFingerprintError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to get fingerprint from database: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryFailedToAddFingerprintError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to add fingerprint to database: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryInvalidMetadataError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Invalid metadata: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryCannotCreateDirError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to create repository directory: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryCannotStatDirError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to get file information about repository directory: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryFailedToAddPackageError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to add package to database: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryRepositoryAlreadyExistsError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Repository already exists",
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrAddRepositoryFailedToAddRepositoryError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to add repository to database: " + err.Error(),
+ Prompt: false,
+ })
+
+ }
+}
+
+func RemoveRepositoryHandleError(err error, vagueErr error, logger *lib.Logger) {
+ switch {
+ case errors.Is(vagueErr, lib.ErrRemoveRepositoryDoesNotExistError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Repository does not exist",
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrRemoveRepositoryCannotStatRepositoryError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to get file information about repository: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrRemoveRepositoryCannotRemoveRepositoryError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to remove repository files: " + err.Error(),
+ Prompt: false,
+ })
+ case errors.Is(vagueErr, lib.ErrRemoveRepositoryFailedToRemoveRepositoryFromDBError):
+ logger.LogFunc(lib.Log{
+ Level: "FATAL",
+ Content: "Failed to remove repository from database: " + err.Error(),
+ Prompt: false,
+ })
+ }
+}
+
+// Ironic how I sign off comments with my name when I'm literally the only contributor to this project, and git shows
+// my name anyway. What is this, ftp?
+// - Arzumify
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..1c9cbb1
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,30 @@
+module eon
+
+go 1.23.0
+
+require (
+ github.com/Masterminds/semver v1.5.0
+ github.com/cespare/xxhash/v2 v2.3.0
+ github.com/dustin/go-humanize v1.0.1
+ github.com/fatih/color v1.17.0
+ github.com/klauspost/compress v1.17.9
+ github.com/mattn/go-sqlite3 v1.14.22
+ golang.org/x/term v0.23.0
+ modernc.org/sqlite v1.32.0
+)
+
+require (
+ github.com/google/uuid v1.6.0 // indirect
+ github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+ github.com/mattn/go-colorable v0.1.13 // indirect
+ github.com/mattn/go-isatty v0.0.20 // indirect
+ github.com/ncruces/go-strftime v0.1.9 // indirect
+ github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+ golang.org/x/sys v0.23.0 // indirect
+ modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 // indirect
+ modernc.org/libc v1.55.3 // indirect
+ modernc.org/mathutil v1.6.0 // indirect
+ modernc.org/memory v1.8.0 // indirect
+ modernc.org/strutil v1.2.0 // indirect
+ modernc.org/token v1.1.0 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..b801636
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,65 @@
+github.com/Masterminds/semver v1.5.0 h1:H65muMkzWKEuNDnfl9d70GUjFniHKHRbFPGBuZ3QEww=
+github.com/Masterminds/semver v1.5.0/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4=
+github.com/fatih/color v1.17.0/go.mod h1:YZ7TlrGPkiz6ku9fK3TLD/pl3CpsiFyu8N92HLgmosI=
+github.com/google/pprof v0.0.0-20240409012703-83162a5b38cd h1:gbpYu9NMq8jhDVbvlGkMFWCjLFlqqEZjEmObmhUy6Vo=
+github.com/google/pprof v0.0.0-20240409012703-83162a5b38cd/go.mod h1:kf6iHlnVGwgKolg33glAes7Yg/8iWP8ukqeldJSO7jw=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
+github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
+github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
+github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
+github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
+github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
+github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
+github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+golang.org/x/mod v0.16.0 h1:QX4fJ0Rr5cPQCF7O9lh9Se4pmwfwskqZfq5moyldzic=
+golang.org/x/mod v0.16.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
+golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.23.0 h1:F6D4vR+EHoL9/sWAWgAR1H2DcHr4PareCbAaCo1RpuU=
+golang.org/x/term v0.23.0/go.mod h1:DgV24QBUrK6jhZXl+20l6UWznPlwAHm1Q1mGHtydmSk=
+golang.org/x/tools v0.19.0 h1:tfGCXNR1OsFG+sVdLAitlpjAvD/I6dHDKnYrpEZUHkw=
+golang.org/x/tools v0.19.0/go.mod h1:qoJWxmGSIBmAeriMx19ogtrEPrGtDbPK634QFIcLAhc=
+modernc.org/cc/v4 v4.21.4 h1:3Be/Rdo1fpr8GrQ7IVw9OHtplU4gWbb+wNgeoBMmGLQ=
+modernc.org/cc/v4 v4.21.4/go.mod h1:HM7VJTZbUCR3rV8EYBi9wxnJ0ZBRiGE5OeGXNA0IsLQ=
+modernc.org/ccgo/v4 v4.19.2 h1:lwQZgvboKD0jBwdaeVCTouxhxAyN6iawF3STraAal8Y=
+modernc.org/ccgo/v4 v4.19.2/go.mod h1:ysS3mxiMV38XGRTTcgo0DQTeTmAO4oCmJl1nX9VFI3s=
+modernc.org/fileutil v1.3.0 h1:gQ5SIzK3H9kdfai/5x41oQiKValumqNTDXMvKo62HvE=
+modernc.org/fileutil v1.3.0/go.mod h1:XatxS8fZi3pS8/hKG2GH/ArUogfxjpEKs3Ku3aK4JyQ=
+modernc.org/gc/v2 v2.4.1 h1:9cNzOqPyMJBvrUipmynX0ZohMhcxPtMccYgGOJdOiBw=
+modernc.org/gc/v2 v2.4.1/go.mod h1:wzN5dK1AzVGoH6XOzc3YZ+ey/jPgYHLuVckd62P0GYU=
+modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 h1:5D53IMaUuA5InSeMu9eJtlQXS2NxAhyWQvkKEgXZhHI=
+modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6/go.mod h1:Qz0X07sNOR1jWYCrJMEnbW/X55x206Q7Vt4mz6/wHp4=
+modernc.org/libc v1.55.3 h1:AzcW1mhlPNrRtjS5sS+eW2ISCgSOLLNyFzRh/V3Qj/U=
+modernc.org/libc v1.55.3/go.mod h1:qFXepLhz+JjFThQ4kzwzOjA/y/artDeg+pcYnY+Q83w=
+modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
+modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
+modernc.org/memory v1.8.0 h1:IqGTL6eFMaDZZhEWwcREgeMXYwmW83LYW8cROZYkg+E=
+modernc.org/memory v1.8.0/go.mod h1:XPZ936zp5OMKGWPqbD3JShgd/ZoQ7899TUuQqxY+peU=
+modernc.org/opt v0.1.3 h1:3XOZf2yznlhC+ibLltsDGzABUGVx8J6pnFMS3E4dcq4=
+modernc.org/opt v0.1.3/go.mod h1:WdSiB5evDcignE70guQKxYUl14mgWtbClRi5wmkkTX0=
+modernc.org/sortutil v1.2.0 h1:jQiD3PfS2REGJNzNCMMaLSp/wdMNieTbKX920Cqdgqc=
+modernc.org/sortutil v1.2.0/go.mod h1:TKU2s7kJMf1AE84OoiGppNHJwvB753OYfNl2WRb++Ss=
+modernc.org/sqlite v1.32.0 h1:6BM4uGza7bWypsw4fdLRsLxut6bHe4c58VeqjRgST8s=
+modernc.org/sqlite v1.32.0/go.mod h1:UqoylwmTb9F+IqXERT8bW9zzOWN8qwAIcLdzeBZs4hA=
+modernc.org/strutil v1.2.0 h1:agBi9dp1I+eOnxXeiZawM8F4LawKv4NzGWSaLfyeNZA=
+modernc.org/strutil v1.2.0/go.mod h1:/mdcBmfOibveCTBxUl5B5l6W+TTH1FXPLHZE6bTosX0=
+modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
+modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
diff --git a/lib/main.go b/lib/main.go
new file mode 100644
index 0000000..2b7ec29
--- /dev/null
+++ b/lib/main.go
@@ -0,0 +1,1132 @@
+package lib
+
+import (
+ "bufio"
+ "bytes"
+ "errors"
+ "fmt"
+ "io"
+ "os"
+ "strconv"
+ "strings"
+ "time"
+
+ "archive/tar"
+ "crypto/ed25519"
+ "encoding/binary"
+ "encoding/hex"
+ "encoding/json"
+ "math/big"
+ "net/http"
+ "os/exec"
+ "path/filepath"
+
+ "github.com/Masterminds/semver"
+ "github.com/cespare/xxhash/v2"
+ "github.com/dustin/go-humanize"
+ "github.com/klauspost/compress/zstd"
+ "modernc.org/sqlite"
+)
+
+// RemoteEPK is a struct that contains the metadata of an EPK from a remote repository
+type RemoteEPK struct {
+ Name string
+ Author string
+ Description string
+ Version semver.Version
+ Architecture string
+ CompressedSize int64
+ Dependencies []string
+ Path string
+ Arch string
+ EPKHash uint64
+}
+
+// Repository is a struct that contains the repository information
+type Repository struct {
+ Name string
+ URL string
+ Owner string
+ Description string
+}
+
+// SpecialFiles is a struct that contains the special files that are not to be deleted or replaced
+type SpecialFiles struct {
+ NoDelete []string
+ NoReplace []string
+}
+
+// Metadata is a struct that contains the metadata of the package
+type Metadata struct {
+ Name string
+ Description string
+ LongDescription string
+ Version semver.Version
+ Author string
+ License string
+ Architecture string
+ Dependencies []string
+ SpecialFiles SpecialFiles
+ Size int64
+ DecompressedSize big.Int
+}
+
+// EPKPreMap is a struct that contains the metadata of the EPK
+type EPKPreMap struct {
+ Name string
+ Author string
+ Architecture string
+ Version semver.Version
+ Size int64
+ DecompressedSize big.Int
+ Dependencies []string
+ MetadataMap map[string]interface{}
+ IsLittleEndian bool
+ IsUpgrade bool
+ TarOffset int64
+}
+
+// PotentiallyNullEPKPreMap is a EPKPreMap that can be nil
+type PotentiallyNullEPKPreMap struct {
+ EPKPreMap *EPKPreMap
+ Null bool
+}
+
+// Log is a struct that contains the log information
+type Log struct {
+ Level string
+ Content string
+ Prompt bool
+ PlaySound bool
+ Progress *big.Int
+ Total *big.Int
+ Overwrite bool
+}
+
+// StreamOrBytes is a struct that contains either a stream or bytes, allowing optimising for memory or speed
+type StreamOrBytes struct {
+ Stream *os.File
+ Bytes []byte
+ IsStream bool
+}
+
+// Logger is a struct that contains the functions and properties of the logger
+type Logger struct {
+ LogFunc func(Log) string
+ PromptSupported bool
+ ProgressSupported bool
+}
+
+// Epk is a struct that contains the metadata and the tar archive of the EPK
+type Epk struct {
+ Metadata Metadata
+ TarArchive []byte
+}
+
+// interfaceToStringSlice converts an interface slice to a string slice
+func interfaceToStringSlice(interfaceSlice []interface{}, interfaceName string) ([]string, error) {
+ // Yes, it's meant to be empty and not nil: JSON arrays are empty, not nil
+ //goland:noinspection GoPreferNilSlice
+ stringSlice := []string{}
+ for _, interfaceValue := range interfaceSlice {
+ stringValue, ok := interfaceValue.(string)
+ if !ok {
+ return nil, errors.New(interfaceName + " are not strings")
+ }
+ stringSlice = append(stringSlice, stringValue)
+ }
+
+ return stringSlice, nil
+}
+
+// ByteToFingerprint converts a byte slice to an Eon fingerprint, which is similar to a legacy-style OpenSSH fingerprint
+func ByteToFingerprint(input []byte) string {
+ xxHashWriter := xxhash.New()
+ _, _ = xxHashWriter.Write(input)
+ inputString := hex.EncodeToString(xxhash.New().Sum(nil))
+ var result []string
+ var previousChar rune
+ for index, char := range inputString {
+ if index%2 == 0 && index != 0 {
+ result = append(result, string(previousChar)+string(char))
+ } else {
+ previousChar = char
+ }
+ }
+ return strings.Join(result, ":")
+}
+
+// ConstMapEPKMetadataOffset is the offset of the metadata in the EPK: 3 magic bytes, 1 endian byte, 8 offset bytes, 64 signature bytes, and 32 public key bytes
+var ConstMapEPKMetadataOffset int64 = 108
+
+var ErrPreMapEPKFailedToReadError = errors.New("failed to read EPK")
+var ErrPreMapEPKNotEPKError = errors.New("not an EPK")
+var ErrPreMapEPKInvalidEndianError = errors.New("invalid endian")
+var ErrPreMapEPKCouldNotParseJSONError = errors.New("error marshaling metadata")
+var ErrPreMapEPKCouldNotMapJSONError = errors.New("error mapping metadata")
+
+// PreMapEPK maps enough data to create the display summary of an EPK
+func PreMapEPK(epkBytes StreamOrBytes, epkSize int64) (EPKPreMap, error, error) {
+ // First, we need to check if it even is a EPK by checking the first 3 magic bytes
+ if epkBytes.IsStream {
+ var magicBytes = make([]byte, 3)
+ _, err := epkBytes.Stream.ReadAt(magicBytes, 0)
+ if err != nil {
+ return EPKPreMap{}, err, ErrPreMapEPKFailedToReadError
+ }
+ if string(magicBytes) != "epk" {
+ return EPKPreMap{}, nil, ErrPreMapEPKNotEPKError
+ }
+ } else {
+ if string(epkBytes.Bytes[0:3]) != "epk" {
+ return EPKPreMap{}, nil, ErrPreMapEPKNotEPKError
+ }
+ }
+
+ // Let's determine the endian-ness of the EPK via the 3rd byte
+ var littleEndian bool
+ if epkBytes.IsStream {
+ var littleEndianByte = make([]byte, 1)
+ _, err := epkBytes.Stream.ReadAt(littleEndianByte, 3)
+ if err != nil {
+ return EPKPreMap{}, err, ErrPreMapEPKFailedToReadError
+ }
+ if littleEndianByte[0] == 0x6C {
+ littleEndian = true
+ } else if littleEndianByte[0] == 0x62 {
+ littleEndian = false
+ } else {
+ return EPKPreMap{}, nil, ErrPreMapEPKInvalidEndianError
+ }
+ } else {
+ if epkBytes.Bytes[3] == 0x6C {
+ littleEndian = true
+ } else if epkBytes.Bytes[3] == 0x62 {
+ littleEndian = false
+ } else {
+ return EPKPreMap{}, nil, ErrPreMapEPKInvalidEndianError
+ }
+ }
+
+ // Now we can get the offsets of the tar archive
+ var tarArchiveOffset int64
+ if epkBytes.IsStream {
+ var tarArchiveOffsetBytes = make([]byte, 8)
+ _, err := epkBytes.Stream.ReadAt(tarArchiveOffsetBytes, 4)
+ if err != nil {
+ return EPKPreMap{}, err, ErrPreMapEPKFailedToReadError
+ }
+ if littleEndian {
+ tarArchiveOffset = int64(binary.LittleEndian.Uint64(tarArchiveOffsetBytes))
+ } else {
+ tarArchiveOffset = int64(binary.BigEndian.Uint64(tarArchiveOffsetBytes))
+ }
+ } else {
+ if littleEndian {
+ tarArchiveOffset = int64(binary.LittleEndian.Uint64(epkBytes.Bytes[4:12]))
+ } else {
+ tarArchiveOffset = int64(binary.BigEndian.Uint64(epkBytes.Bytes[4:12]))
+ }
+ }
+
+ // We don't need to validate the signature yet. We will do that when we map the full EPK, because it means
+ // we have to read the entire thing, which is a waste of resources, since we only need the metadata.
+
+ // Let's map the display data
+ var displayDataMap map[string]interface{}
+ if epkBytes.IsStream {
+ var metadataBuffer = make([]byte, tarArchiveOffset-ConstMapEPKMetadataOffset)
+ _, err := epkBytes.Stream.ReadAt(metadataBuffer, ConstMapEPKMetadataOffset)
+ if err != nil {
+ return EPKPreMap{}, err, ErrPreMapEPKFailedToReadError
+ }
+ err = json.Unmarshal(metadataBuffer, &displayDataMap)
+ if err != nil {
+ return EPKPreMap{}, err, ErrPreMapEPKCouldNotParseJSONError
+ }
+ } else {
+ err := json.Unmarshal(epkBytes.Bytes[ConstMapEPKMetadataOffset:tarArchiveOffset], &displayDataMap)
+ if err != nil {
+ return EPKPreMap{}, err, ErrPreMapEPKCouldNotParseJSONError
+ }
+ }
+
+ // Declare the parsedDisplayData object
+ var parsedDisplayData EPKPreMap
+
+ // Add some of our data so that the full EPK can be mapped with less effort
+ parsedDisplayData.MetadataMap = displayDataMap
+ parsedDisplayData.IsLittleEndian = littleEndian
+ parsedDisplayData.Size = epkSize
+ parsedDisplayData.TarOffset = tarArchiveOffset
+
+ // Map the display data
+ var ok bool
+ // Set the size
+ sizeBigInt, ok := displayDataMap["size"].(string)
+ if !ok {
+ return EPKPreMap{}, errors.New("size is not a string"), ErrPreMapEPKCouldNotMapJSONError
+ }
+ parsedDisplayData.DecompressedSize.SetString(sizeBigInt, 10)
+ // Set the name, author, version, arch, and dependencies
+ parsedDisplayData.Name, ok = displayDataMap["name"].(string)
+ if !ok {
+ return EPKPreMap{}, errors.New("name is not a string"), ErrPreMapEPKCouldNotMapJSONError
+ }
+ parsedDisplayData.Author, ok = displayDataMap["author"].(string)
+ if !ok {
+ return EPKPreMap{}, errors.New("author is not a string"), ErrPreMapEPKCouldNotMapJSONError
+ }
+ versionString, ok := displayDataMap["version"].(string)
+ if !ok {
+ return EPKPreMap{}, errors.New("version is not a string"), ErrPreMapEPKCouldNotMapJSONError
+ }
+ versionPointer, err := semver.NewVersion(versionString)
+ if err != nil {
+ return EPKPreMap{}, err, ErrPreMapEPKCouldNotMapJSONError
+ }
+ parsedDisplayData.Version = *versionPointer
+ parsedDisplayData.Architecture, ok = displayDataMap["arch"].(string)
+ if !ok {
+ return EPKPreMap{}, errors.New("arch is not a string"), ErrPreMapEPKCouldNotMapJSONError
+ }
+ dependencies, ok := displayDataMap["deps"].([]interface{})
+ if !ok {
+ return EPKPreMap{}, errors.New("dependencies is not an array"), ErrPreMapEPKCouldNotMapJSONError
+ }
+ parsedDisplayData.Dependencies, err = interfaceToStringSlice(dependencies, "dependencies")
+ if err != nil {
+ return EPKPreMap{}, err, ErrPreMapEPKCouldNotMapJSONError
+ }
+
+ return parsedDisplayData, nil, nil
+}
+
+func handlePublicKeyCheck(exists bool, matchingAuthor bool, matchingFingerprint bool, publicKey []byte, author string, addFingerprintToDB func([]byte, string, bool) error, logger *Logger) error {
+ if !exists {
+ if logger.PromptSupported {
+ response := logger.LogFunc(Log{
+ Level: "WARN",
+ Content: "Public key not found in database.\nthe public key fingerprint is: " + author + " " + ByteToFingerprint(publicKey) +
+ "\nWould you like to trust this key (y/n)?",
+ Prompt: true,
+ })
+ if strings.ToLower(response) == "y" {
+ err := addFingerprintToDB(publicKey, author, false)
+ if err != nil {
+ return err
+ } else {
+ logger.LogFunc(Log{
+ Level: "INFO",
+ Content: "Public key added to database.",
+ })
+ }
+ } else {
+ logger.LogFunc(Log{
+ Level: "INFO",
+ Content: "Installation cancelled.",
+ })
+ }
+ } else {
+ logger.LogFunc(Log{
+ Level: "FATAL",
+ Content: "Public key not found in database.\nthe public key fingerprint is:" + author + " " + ByteToFingerprint(publicKey) +
+ "\nSince non-interactive mode is enabled, the installation will not proceed.",
+ })
+ }
+ } else if !matchingAuthor {
+ if logger.PromptSupported {
+ response := logger.LogFunc(Log{
+ Level: "WARN",
+ Content: "Public key does not match the author.\nthe public key fingerprint is: " + author + " " + ByteToFingerprint(publicKey) +
+ "\nWould you like to replace the key (y/n)?",
+ Prompt: true,
+ })
+ if strings.ToLower(response) == "y" {
+ err := addFingerprintToDB(publicKey, author, true)
+ if err != nil {
+ return err
+ } else {
+ logger.LogFunc(Log{
+ Level: "INFO",
+ Content: "Public key replaced in database.",
+ })
+ }
+ } else {
+ logger.LogFunc(Log{
+ Level: "FATAL",
+ Content: "Installation cancelled.",
+ })
+ }
+ } else {
+ logger.LogFunc(Log{
+ Level: "FATAL",
+ Content: "Public key does not match the author.\nThe public key is :" + author + " " + ByteToFingerprint(publicKey) +
+ "\nSince non-interactive mode is enabled, the installation will not proceed.",
+ })
+ }
+ } else if !matchingFingerprint {
+ if logger.PromptSupported {
+ response := logger.LogFunc(Log{
+ Level: "WARN",
+ Content: "Public key fingerprint does not match the author.\nThe public key is :" + author + " " + ByteToFingerprint(publicKey) +
+ "\nThis may be a security risk. To replace the key, type \"Yes, do as I say!\". Otherwise, type anything else.",
+ Prompt: true,
+ })
+ if response == "Yes, do as I say!" {
+ err := addFingerprintToDB(publicKey, author, true)
+ if err != nil {
+ return err
+ } else {
+ logger.LogFunc(Log{
+ Level: "INFO",
+ Content: "Public key replaced in database.",
+ })
+ }
+ } else {
+ logger.LogFunc(Log{
+ Level: "FATAL",
+ Content: "Installation cancelled.",
+ })
+ }
+ } else {
+ logger.LogFunc(Log{
+ Level: "FATAL",
+ Content: "Public key fingerprint does not match the author.\nthe public key fingerprint is: " + author + " " + ByteToFingerprint(publicKey) +
+ "\nSince non-interactive mode is enabled, the installation will not proceed.",
+ })
+ }
+ }
+
+ return nil
+}
+
+var ErrFullyMapMetadataFailedToJumpError = errors.New("failed to jump to offset")
+var ErrFullyMapMetadataFailedToReadError = errors.New("failed to read EPK")
+var ErrFullyMapMetadataFailedToAddFingerprintError = errors.New("failed to add fingerprint")
+var ErrFullyMapMetadataFailedToGetFingerprintError = errors.New("failed to get fingerprint")
+var ErrFullyMapMetadataInvalidSignatureError = errors.New("invalid signature")
+var ErrFullyMapMetadataCouldNotMapJSONError = errors.New("error mapping metadata")
+
+// FullyMapMetadata maps an EPK file, but is significantly slower than PreMapEPK. Use PreMapEPK if you only need the display data.
+// it pulls data from PreMapEPK to reduce the amount of work needed to map the EPK.
+func FullyMapMetadata(epkBytes StreamOrBytes, preMap *EPKPreMap, checkFingerprintInDB func([]byte, string) (bool, bool, bool, error), addFingerprintToDB func([]byte, string, bool) error, logger *Logger) (*Metadata, error, error) {
+ // We define the signature and public key bytes here so that we can read them later
+ signature := make([]byte, 64)
+ publicKey := make([]byte, 32)
+
+ if epkBytes.IsStream {
+ // Before we continue, check if the signature is valid
+ // To get the signature, we read from the 12th byte to the 76th byte
+ _, err := epkBytes.Stream.ReadAt(signature, 12)
+ if err != nil {
+ return &Metadata{}, err, ErrFullyMapMetadataFailedToReadError
+ }
+
+ // To get the public key, we read from the 76th byte to the 108th byte
+ _, err = epkBytes.Stream.ReadAt(publicKey, 76)
+ if err != nil {
+ return &Metadata{}, err, ErrFullyMapMetadataFailedToReadError
+ }
+ } else {
+ // Make signature and public key the optimised bytes
+ signature = epkBytes.Bytes[12:76]
+ publicKey = epkBytes.Bytes[76:108]
+ }
+
+ // Let's check for the public key in the database
+ exists, matchingAuthor, matchingFingerprint, err := checkFingerprintInDB(publicKey, preMap.Author)
+ if err != nil {
+ return &Metadata{}, err, ErrFullyMapMetadataFailedToGetFingerprintError
+ } else {
+ err := handlePublicKeyCheck(exists, matchingAuthor, matchingFingerprint, publicKey, preMap.Author, addFingerprintToDB, logger)
+ if err != nil {
+ return &Metadata{}, err, ErrFullyMapMetadataFailedToAddFingerprintError
+ }
+ }
+
+ // We need to create a new xxHash instance
+ xxHash := xxhash.New()
+ if epkBytes.IsStream {
+ // Now we can verify the signature. First, we need to take the checksum of the metadata
+ // Seeking is better than using ReadAt because it allows us to not have to load the entire file into memory
+ _, err = epkBytes.Stream.Seek(ConstMapEPKMetadataOffset, io.SeekStart)
+ if err != nil {
+ return &Metadata{}, err, ErrFullyMapMetadataFailedToJumpError
+ }
+
+ // Streaming bytes to the hash is more memory efficient
+ _, err = epkBytes.Stream.WriteTo(xxHash)
+ if err != nil {
+ return &Metadata{}, err, ErrFullyMapMetadataFailedToReadError
+ }
+ // Verify the signature (we verify the hash because it's cheaper than verifying the entire EPK)
+ if !ed25519.Verify(publicKey, xxHash.Sum(nil), signature) {
+ return &Metadata{}, nil, ErrFullyMapMetadataInvalidSignatureError
+ }
+ } else {
+ // We now verify the signature in one go without streaming
+ if !ed25519.Verify(publicKey, xxHash.Sum(epkBytes.Bytes[ConstMapEPKMetadataOffset:]), signature) {
+ return &Metadata{}, nil, ErrFullyMapMetadataInvalidSignatureError
+ }
+ }
+
+ // Great, the EPK is valid. Let's map the metadata.
+ // We use the metadata map provided by PreMapEPK to reduce the amount of work needed to map the EPK
+
+ // First, map SpecialFiles
+ var parsedSpecialFiles SpecialFiles
+ specialFilesMap, ok := preMap.MetadataMap["specialFiles"].(map[string]interface{})
+ if !ok {
+ return &Metadata{}, errors.New("specialFiles is not an object"), ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ noDelete, ok := specialFilesMap["noDelete"].([]interface{})
+ if !ok {
+ return &Metadata{}, errors.New("noDelete is not an array"), ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ parsedSpecialFiles.NoDelete, err = interfaceToStringSlice(noDelete, "noDelete")
+ if err != nil {
+ return &Metadata{}, err, ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ noReplace, ok := specialFilesMap["noReplace"].([]interface{})
+ if !ok {
+ return &Metadata{}, errors.New("noReplace is not an array"), ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ parsedSpecialFiles.NoReplace, err = interfaceToStringSlice(noReplace, "noReplace")
+ if err != nil {
+ return &Metadata{}, err, ErrFullyMapMetadataCouldNotMapJSONError
+ }
+
+ // Declare the parsedMetadata object
+ var parsedMetadata Metadata
+
+ // Append parsedSpecialFiles to parsedMetadata
+ parsedMetadata.SpecialFiles = parsedSpecialFiles
+
+ // Steal some data from the PreMapEPK object
+ parsedMetadata.Name = preMap.Name
+ parsedMetadata.Version = preMap.Version
+ parsedMetadata.Architecture = preMap.Architecture
+ parsedMetadata.Size = preMap.Size
+ parsedMetadata.Dependencies = preMap.Dependencies
+
+ // Map the metadata
+ parsedMetadata.Description, ok = preMap.MetadataMap["desc"].(string)
+ if !ok {
+ return &Metadata{}, errors.New("description is not a string"), ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ parsedMetadata.LongDescription, ok = preMap.MetadataMap["longDesc"].(string)
+ if !ok {
+ return &Metadata{}, errors.New("longDesc is not a string"), ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ parsedMetadata.Author, ok = preMap.MetadataMap["author"].(string)
+ if !ok {
+ return &Metadata{}, errors.New("author is not a string"), ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ parsedMetadata.License, ok = preMap.MetadataMap["license"].(string)
+ if !ok {
+ return &Metadata{}, errors.New("license is not a string"), ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ decompressedSizeString, ok := preMap.MetadataMap["size"].(string)
+ if !ok {
+ return &Metadata{}, errors.New("size is not a string"), ErrFullyMapMetadataCouldNotMapJSONError
+ }
+ parsedMetadata.DecompressedSize.SetString(decompressedSizeString, 10)
+
+ return &parsedMetadata, nil, nil
+}
+
+// ResolveDependencies resolves the dependencies of an EPK
+// func ResolveDependencies(epk Epk) (error, error) {
+// TODO: Implement this when I finish up repositories
+// return nil, nil
+// }
+
+var ErrInstallEPKCouldNotCreateTempDirError = errors.New("could not create temporary directory")
+var ErrInstallEPKCouldNotCreateZStandardReaderError = errors.New("could not create ZStandard reader")
+var ErrInstallEPKCouldNotDecompressTarArchiveError = errors.New("could not decompress tar archive")
+var ErrInstallEPKCouldNotCreateDirError = errors.New("could not create directory")
+var ErrInstallEPKCouldNotStatDirError = errors.New("could not stat directory")
+var ErrInstallEPKCouldNotStatFileError = errors.New("could not stat file")
+var ErrInstallEPKCouldNotCreateFileError = errors.New("could not create file")
+var ErrInstallEPKCouldNotCloseTarReaderError = errors.New("could not close tar reader")
+var ErrInstallEPKCouldNotStatHookError = errors.New("could not stat hook")
+var ErrInstallEPKCouldNotRunHookError = errors.New("could not run hook")
+var ErrInstallEPKCouldNotAddEPKToDBError = errors.New("could not add EPK to database")
+var ErrInstallEPKCouldNotRemoveTempDirError = errors.New("could not remove temporary directory")
+
+// InstallEPK installs an EPK file
+func InstallEPK(epkBytes StreamOrBytes, metadata *Metadata, preMap *EPKPreMap, addEPKToDB func(metadata *Metadata, removeScript []byte, dependency bool, hasRemoveScript bool, size int64) error, logger *Logger) (string, error, error) {
+ // Create the temporary directory
+ tempDir, err := os.MkdirTemp("/tmp", "eon-install-")
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotCreateTempDirError
+ }
+
+ var zStandardReader *zstd.Decoder
+ if epkBytes.IsStream {
+ // Seek to the correct position in the EPK
+ _, err = epkBytes.Stream.Seek(preMap.TarOffset, io.SeekStart)
+ if err != nil {
+ return "", err, nil
+ }
+
+ // Create a ZStandard reader reading from the EPK
+ zStandardReader, err = zstd.NewReader(epkBytes.Stream)
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotCreateZStandardReaderError
+ }
+ } else {
+ // Create a ZStandard reader reading from the EPKs in-memory bytes
+ zStandardReader, err = zstd.NewReader(bytes.NewReader(epkBytes.Bytes[preMap.TarOffset:]))
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotCreateZStandardReaderError
+ }
+ }
+
+ // Create a tar reader reading from the ZStandard reader
+ tarReader := tar.NewReader(zStandardReader)
+
+ // Create a goroutine to see how much of the decompressed size we have decompressed
+ var written big.Int
+ stop := make(chan bool)
+ go func() {
+ for {
+ select {
+ case <-stop:
+ return
+ default:
+ if logger.ProgressSupported {
+ logger.LogFunc(Log{
+ Level: "PROGRESS",
+ Progress: &written,
+ Total: &metadata.DecompressedSize,
+ Overwrite: true,
+ })
+ } else {
+ logger.LogFunc(Log{
+ Level: "INFO",
+ Content: "Decompressed " + humanize.Bytes(uint64(written.Int64())) + " of " + humanize.Bytes(uint64(metadata.DecompressedSize.Int64())),
+ Prompt: false,
+ })
+ time.Sleep(1 * time.Second)
+ }
+ }
+ }
+ }()
+
+ // Iterate through the tar archive
+ for {
+ // Read the next header
+ header, err := tarReader.Next()
+ if err != nil {
+ break
+ }
+
+ switch {
+ // If we are done, break
+ case err == io.EOF:
+ break
+
+ // If there was an error, return the error
+ case err != nil:
+ return tempDir, err, ErrInstallEPKCouldNotDecompressTarArchiveError
+
+ // This should never happen, but if it does, we should just continue
+ case header == nil:
+ continue
+ }
+
+ // Get the target path
+ var target string
+ if strings.HasPrefix(header.Name, "root") {
+ target = strings.TrimPrefix(header.Name, "root")
+ } else if strings.HasPrefix(header.Name, "hooks") {
+ target = filepath.Join(tempDir, header.Name)
+ } else {
+ return tempDir, errors.New("invalid path in EPK: " + header.Name), ErrInstallEPKCouldNotDecompressTarArchiveError
+ }
+
+ switch header.Typeflag {
+ case tar.TypeDir:
+ // Check if the directory exists
+ _, err := os.Stat(target)
+ if err != nil {
+ // If the directory does not exist, create it
+ if os.IsNotExist(err) {
+ // Make sure to replicate the permissions of the directory
+ err := os.MkdirAll(target, header.FileInfo().Mode())
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotCreateDirError
+ }
+ } else {
+ return tempDir, err, ErrInstallEPKCouldNotStatDirError
+ }
+ } else {
+ // If it does exist, don't touch it
+ continue
+ }
+ case tar.TypeReg:
+ // Check if the file has anywhere to go
+ _, err := os.Stat(filepath.Dir(target))
+ if err != nil {
+ // No, it doesn't. Create the directory
+ if os.IsNotExist(err) {
+ // We assume 0755 for any directories that don't exist
+ err := os.MkdirAll(filepath.Dir(target), 0755)
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotCreateDirError
+ }
+ } else {
+ return tempDir, err, ErrInstallEPKCouldNotStatDirError
+ }
+ }
+
+ // Check if the file already exists
+ _, err = os.Stat(target)
+ if err != nil {
+ if os.IsNotExist(err) {
+ // Great, the file does not exist. Let's create it.
+ file, err := os.OpenFile(target, os.O_CREATE|os.O_RDWR|os.O_TRUNC, os.FileMode(header.Mode))
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotCreateFileError
+ }
+
+ writtenFile, err := io.Copy(file, tarReader)
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotDecompressTarArchiveError
+ }
+
+ written.Add(&written, big.NewInt(writtenFile))
+
+ err = file.Close()
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotCloseTarReaderError
+ }
+ } else {
+ return tempDir, err, ErrInstallEPKCouldNotStatFileError
+ }
+ } else {
+ // See if it's an upgrade or not
+ if preMap.IsUpgrade {
+ // Check if it's a special file
+ for _, file := range metadata.SpecialFiles.NoReplace {
+ if strings.TrimSuffix(target, "/") == strings.TrimSuffix(file, "/") {
+ // This file is a special file and should not be replaced
+ continue
+ }
+ }
+ }
+ }
+ }
+ }
+
+ zStandardReader.Close()
+
+ // Now let's run the hooks
+ if preMap.IsUpgrade {
+ _, err := os.Stat(filepath.Join(tempDir, "hooks", "upgrade.sh"))
+ if err != nil {
+ if !os.IsNotExist(err) {
+ return tempDir, err, ErrInstallEPKCouldNotStatHookError
+ }
+ } else {
+ cmd := exec.Command("/bin/sh", filepath.Join(tempDir, "hooks", "upgrade.sh"), metadata.Version.String())
+ stderr, err := cmd.StderrPipe()
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotRunHookError
+ }
+ err = cmd.Start()
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotRunHookError
+ }
+ scanner := bufio.NewScanner(stderr)
+ scanner.Split(bufio.ScanWords)
+ for scanner.Scan() {
+ message := scanner.Text()
+ fmt.Println(message)
+ }
+ err = cmd.Wait()
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotRunHookError
+ }
+ }
+ } else {
+ _, err := os.Stat(filepath.Join(tempDir, "hooks", "install.sh"))
+ if err != nil {
+ if !os.IsNotExist(err) {
+ return tempDir, err, ErrInstallEPKCouldNotStatHookError
+ }
+ } else {
+ cmd := exec.Command("/bin/sh", filepath.Join(tempDir, "hooks", "install.sh"), metadata.Version.String())
+ stderr, err := cmd.StderrPipe()
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotRunHookError
+ }
+ err = cmd.Start()
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotRunHookError
+ }
+ scanner := bufio.NewScanner(stderr)
+ scanner.Split(bufio.ScanWords)
+ for scanner.Scan() {
+ message := scanner.Text()
+ fmt.Println(message)
+ }
+ err = cmd.Wait()
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotRunHookError
+ }
+ }
+ }
+
+ // Finally, add the EPK and remove script to the database
+ file, err := os.ReadFile(filepath.Join(tempDir, "hooks", "remove.sh"))
+ if err != nil {
+ if !os.IsNotExist(err) {
+ err := addEPKToDB(metadata, []byte{}, false, false, metadata.Size)
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotAddEPKToDBError
+ }
+ } else {
+ return tempDir, err, ErrInstallEPKCouldNotAddEPKToDBError
+ }
+ } else {
+ err := addEPKToDB(metadata, file, false, true, metadata.Size)
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotAddEPKToDBError
+ }
+ }
+
+ // Remove the temporary directory
+ err = os.RemoveAll(tempDir)
+ if err != nil {
+ return tempDir, err, ErrInstallEPKCouldNotRemoveTempDirError
+ }
+
+ stop <- true
+ logger.LogFunc(Log{
+ Level: "PROGRESS",
+ Progress: big.NewInt(1),
+ Total: big.NewInt(1),
+ Overwrite: true,
+ })
+
+ return "", nil, nil
+}
+
+var ErrAddRepositoryCannotCreateRequestError = errors.New("cannot create request")
+var ErrAddRepositoryCannotSendRequestError = errors.New("cannot send request")
+var ErrAddRepositoryUnexpectedStatusCodeError = errors.New("unexpected status code")
+var ErrAddRepositoryCannotReadResponseError = errors.New("cannot read response")
+var ErrAddRepositoryInvalidMagicError = errors.New("invalid magic")
+var ErrAddRepositoryCannotHashError = errors.New("cannot write to hash")
+var ErrAddRepositoryUnmarshalMetadataError = errors.New("cannot unmarshal metadata")
+var ErrAddRepositoryFailedToGetFingerprintError = errors.New("failed to get fingerprint")
+var ErrAddRepositoryFailedToAddFingerprintError = errors.New("failed to add fingerprint")
+var ErrAddRepositoryInvalidMetadataError = errors.New("invalid metadata")
+var ErrAddRepositoryCannotCreateDirError = errors.New("cannot create directory")
+var ErrAddRepositoryCannotStatDirError = errors.New("cannot stat directory")
+var ErrAddRepositoryFailedToAddPackageError = errors.New("failed to add package to database")
+var ErrAddRepositoryRepositoryAlreadyExistsError = errors.New("repository already exists")
+var ErrAddRepositoryFailedToAddRepositoryError = errors.New("failed to add repository to database")
+
+func AddRepository(url string, addRepositoryToDB func(repository Repository) error, getFingerprintFromDB func([]byte, string) (bool, bool, bool, error), addFingerprintToDB func([]byte, string, bool) error, addRemotePackageToDB func(string, RemoteEPK) error, logger *Logger) (error, error) {
+ // First, fetch range 0-3 of /repository.erf
+ // Then, check if the first 3 bytes are "eon"
+
+ // Create the request
+ magicRequest, err := http.NewRequest("GET", url+"/repository.erf", nil)
+ if err != nil {
+ return err, ErrAddRepositoryCannotCreateRequestError
+ }
+
+ // Add the range header
+ magicRequest.Header.Add("Range", "bytes=0-3")
+
+ // Send the request
+ magicResponse, err := http.DefaultClient.Do(magicRequest)
+ if err != nil {
+ return err, ErrAddRepositoryCannotSendRequestError
+ }
+
+ // Check if the status code is 206
+ var hasEntireFile bool
+ if magicResponse.StatusCode != 206 {
+ if magicResponse.StatusCode == 200 {
+ // This web server does not support range requests, meaning we now have the entire file.
+ // Mark it as such.
+ hasEntireFile = true
+ } else {
+ return errors.New("status code " + strconv.Itoa(magicResponse.StatusCode)), ErrAddRepositoryUnexpectedStatusCodeError
+ }
+ }
+
+ // Check the magic bytes
+ var magicBytes = make([]byte, 3)
+ _, err = magicResponse.Body.Read(magicBytes)
+ if err != nil {
+ return err, ErrAddRepositoryCannotReadResponseError
+ }
+
+ // Check if the magic bytes are "eon"
+ if string(magicBytes) != "eon" {
+ return nil, ErrAddRepositoryInvalidMagicError
+ }
+
+ // Great. We either confirmed the repository is an Eon repository or we have the entire file. Both are good.
+ var fullFetch *http.Response
+ if !hasEntireFile {
+ // Download the rest of the file
+ var err error
+ fullFetch, err = http.Get(url + "/repository.erf")
+ if err != nil {
+ return err, ErrAddRepositoryCannotSendRequestError
+ }
+ } else {
+ fullFetch = magicResponse
+ }
+
+ // Now we get the contents of the file
+ contents, err := io.ReadAll(fullFetch.Body)
+ if err != nil {
+ return err, ErrAddRepositoryCannotReadResponseError
+ }
+
+ // Verify the file's signature
+
+ // Unmarshal the repository metadata, which is NOT the same as the EPK metadata
+ var repositoryMetadata map[string]interface{}
+ // We use a decoder instead of unmarshal here because we need to use JSON numbers: float64 is not enough
+ var jsonDecoder = json.NewDecoder(bytes.NewReader(contents[99:]))
+ jsonDecoder.UseNumber()
+ err = jsonDecoder.Decode(&repositoryMetadata)
+ if err != nil {
+ return err, ErrAddRepositoryUnmarshalMetadataError
+ }
+
+ // Get the public key and signature
+ signature := contents[3:67]
+ publicKey := contents[67:99]
+
+ // Look for the public key in the database
+ exists, matchingAuthor, matchingFingerprint, err := getFingerprintFromDB(publicKey, repositoryMetadata["author"].(string))
+ if err != nil {
+ return err, ErrAddRepositoryFailedToGetFingerprintError
+ } else {
+ err := handlePublicKeyCheck(exists, matchingAuthor, matchingFingerprint, publicKey, repositoryMetadata["author"].(string), addFingerprintToDB, logger)
+ if err != nil {
+ return err, ErrAddRepositoryFailedToAddFingerprintError
+ }
+ }
+
+ // We need to create a new xxHash instance
+ xxHash := xxhash.New()
+ _, err = xxHash.Write(contents[99:])
+ if err != nil {
+ return err, ErrAddRepositoryCannotHashError
+ }
+
+ // Verify the signature
+ if !ed25519.Verify(publicKey, xxHash.Sum(nil), signature) {
+ return errors.New("invalid signature"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ // Now we can create the repository object
+ var repository Repository
+ var ok bool
+ repository.URL = url
+ repository.Name, ok = repositoryMetadata["name"].(string)
+ if !ok {
+ return errors.New("name is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+ repository.Description, ok = repositoryMetadata["desc"].(string)
+ if !ok {
+ return errors.New("desc is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+ repository.Owner, ok = repositoryMetadata["author"].(string)
+ if !ok {
+ return errors.New("author is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ // First check if the directory exists
+ _, err = os.Stat("/var/lib/eon/repositories")
+ if err != nil {
+ if os.IsNotExist(err) {
+ // If the directory does not exist, create it
+ err = os.MkdirAll("/var/lib/eon/repositories", 0755)
+ if err != nil {
+ return err, ErrAddRepositoryCannotCreateDirError
+ }
+ } else {
+ return err, ErrAddRepositoryCannotStatDirError
+ }
+ }
+
+ // Write the contents of the repository to the database
+ packageList, ok := repositoryMetadata["packages"].([]interface{})
+ if !ok {
+ return errors.New("packages is not an array"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ var remoteEPKs []RemoteEPK
+ for _, epk := range packageList {
+ epk, ok := epk.(map[string]interface{})
+ if !ok {
+ return errors.New("package is not an object"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ name, ok := epk["name"].(string)
+ if !ok {
+ return errors.New("package name is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ author, ok := epk["author"].(string)
+ if !ok {
+ return errors.New("package author is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ arch, ok := epk["arch"].(string)
+ if !ok {
+ return errors.New("package arch is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ versionString, ok := epk["version"].(string)
+ if !ok {
+ return errors.New("package version is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ versionPointer, err := semver.NewVersion(versionString)
+ if err != nil {
+ return errors.New("package version is not a valid semver version"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ sizeString, ok := epk["size"].(string)
+ if !ok {
+ return errors.New("package size is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ size, err := strconv.ParseInt(sizeString, 10, 64)
+ if err != nil {
+ return errors.New("package size is not a number"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ dependenciesInterface, ok := epk["deps"].([]interface{})
+ if !ok {
+ return errors.New("package dependencies is not an array"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ dependencies, err := interfaceToStringSlice(dependenciesInterface, "dependencies")
+ if err != nil {
+ return err, ErrAddRepositoryInvalidMetadataError
+ }
+
+ hashJsonNumber, ok := epk["hash"].(json.Number)
+ if !ok {
+ return errors.New("package hash is not a number"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ var hash uint64
+ hash, err = strconv.ParseUint(hashJsonNumber.String(), 10, 64)
+ if err != nil {
+ return errors.New("package hash is not a valid number"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ fmt.Println(hash)
+
+ path, ok := epk["path"].(string)
+ if !ok {
+ return errors.New("package path is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ description, ok := epk["desc"].(string)
+ if !ok {
+ return errors.New("package description is not a string"), ErrAddRepositoryInvalidMetadataError
+ }
+
+ remoteEPKs = append(remoteEPKs, RemoteEPK{
+ Name: name,
+ Author: author,
+ Description: description,
+ Version: *versionPointer,
+ Architecture: arch,
+ CompressedSize: size,
+ Dependencies: dependencies,
+ Path: path,
+ Arch: arch,
+ EPKHash: hash,
+ })
+ if err != nil {
+ return err, ErrAddRepositoryFailedToAddPackageError
+ }
+ }
+
+ // We add packages afterward so that if there is an error, we don't have to remove the packages
+ for _, epk := range remoteEPKs {
+ err := addRemotePackageToDB(repository.Name, epk)
+ if err != nil {
+ return err, ErrAddRepositoryFailedToAddPackageError
+ }
+ }
+
+ // Add the repository to the database
+ err = addRepositoryToDB(repository)
+ if err != nil {
+ if err.(*sqlite.Error).Code() == 2067 {
+ return nil, ErrAddRepositoryRepositoryAlreadyExistsError
+ } else {
+ return err, ErrAddRepositoryFailedToAddRepositoryError
+ }
+ }
+
+ // Alright, we're done here.
+ logger.LogFunc(Log{
+ Level: "INFO",
+ Content: "Added repository " + repository.Name + " to the database.",
+ })
+
+ return nil, nil
+}
+
+var ErrRemoveRepositoryDoesNotExistError = errors.New("repository does not exist")
+var ErrRemoveRepositoryCannotStatRepositoryError = errors.New("cannot stat repository")
+var ErrRemoveRepositoryCannotRemoveRepositoryError = errors.New("cannot remove repository")
+var ErrRemoveRepositoryFailedToRemoveRepositoryFromDBError = errors.New("failed to remove repository from database")
+
+func RemoveRepository(repository string, removeRepositoryFromDB func(repository string) error, logger *Logger) (error, error) {
+ // First check if the file exists
+ _, err := os.Stat(filepath.Join("/var/lib/eon/repositories/", repository+".json"))
+ if err != nil {
+ if os.IsNotExist(err) {
+ return nil, ErrRemoveRepositoryDoesNotExistError
+ } else {
+ return err, ErrRemoveRepositoryCannotStatRepositoryError
+ }
+ }
+
+ // Remove the file
+ err = os.Remove(filepath.Join("/var/lib/eon/repositories/", repository+".json"))
+ if err != nil {
+ return err, ErrRemoveRepositoryCannotRemoveRepositoryError
+ }
+
+ // Purge the download cache
+ err = os.RemoveAll(filepath.Join("/var/cache/eon/repositories/", repository))
+ if err != nil {
+ return err, ErrRemoveRepositoryCannotRemoveRepositoryError
+ }
+
+ // Remove the repository from the database
+ err = removeRepositoryFromDB(repository)
+ if err != nil {
+ return err, ErrRemoveRepositoryFailedToRemoveRepositoryFromDBError
+ }
+
+ // Alright, we're done here.
+ logger.LogFunc(Log{
+ Level: "INFO",
+ Content: "Removed repository " + repository + " from the database.",
+ })
+
+ return nil, nil
+}