You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
368 lines
12 KiB
368 lines
12 KiB
package main
|
|
|
|
import (
|
|
// "bufio" // Keep for other potential uses, though not strictly needed for the new bb.sh logic if using SplitN
|
|
"bytes"
|
|
"encoding/base64"
|
|
"fmt"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
// "regexp" // Keep for other potential uses, though not for bb.sh color insertion
|
|
"strings"
|
|
"sync"
|
|
"sync/atomic"
|
|
)
|
|
|
|
const (
|
|
gitRepoURL = "https://git.cz0.cz/czoczo/BetterBash"
|
|
localRepoPath = "BetterBashRepo" // Cloned into a subdirectory
|
|
bbShellPath = "prompt/bb.sh"
|
|
getBbPath = "getbb.sh"
|
|
)
|
|
|
|
var (
|
|
requestCounter uint64
|
|
repoMutex sync.Mutex
|
|
)
|
|
|
|
var colorComponentKeys = []string{
|
|
"PRIMARY_COLOR", "SECONDARY_COLOR", "ROOT_COLOR", "TIME_COLOR",
|
|
"ERR_COLOR", "SEPARATOR_COLOR", "BORDCOL", "PATH_COLOR",
|
|
}
|
|
|
|
func decodeColorLogic(encodedData string) (map[string]string, string, bool, error) {
|
|
standardBase64 := strings.ReplaceAll(encodedData, "-", "+")
|
|
standardBase64 = strings.ReplaceAll(standardBase64, "_", "/")
|
|
|
|
decodedBytes, err := base64.RawStdEncoding.DecodeString(standardBase64)
|
|
if err != nil {
|
|
return nil, "", false, fmt.Errorf("Base64 decoding failed: %v. Input: '%s'", err, encodedData)
|
|
}
|
|
|
|
if len(decodedBytes) != 6 {
|
|
return nil, "", false, fmt.Errorf("Decoded data must be 6 bytes long, got %d bytes from input '%s'", len(decodedBytes), encodedData)
|
|
}
|
|
|
|
fiveBitValues := make([]byte, 9)
|
|
b := decodedBytes
|
|
fiveBitValues[0] = b[0] >> 3
|
|
fiveBitValues[1] = ((b[0] & 0x07) << 2) | (b[1] >> 6)
|
|
fiveBitValues[2] = (b[1] & 0x3E) >> 1
|
|
fiveBitValues[3] = ((b[1] & 0x01) << 4) | (b[2] >> 4)
|
|
fiveBitValues[4] = ((b[2] & 0x0F) << 1) | (b[3] >> 7)
|
|
fiveBitValues[5] = (b[3] & 0x7C) >> 2
|
|
fiveBitValues[6] = ((b[3] & 0x03) << 3) | (b[4] >> 5)
|
|
fiveBitValues[7] = b[4] & 0x1F
|
|
fiveBitValues[8] = b[5] >> 3
|
|
|
|
// Extract avatar bit from the first bit of the 6th byte
|
|
avatarEnabled := (b[5] & 0x80) != 0
|
|
|
|
colorsMap := make(map[string]string)
|
|
var resultList strings.Builder
|
|
|
|
for i := 0; i < 8; i++ {
|
|
val5bit := fiveBitValues[i]
|
|
baseColor07 := (val5bit >> 2) & 0x07
|
|
lightBit := (val5bit >> 1) & 0x01
|
|
boldBit := val5bit & 0x01
|
|
|
|
baseAnsiCode := baseColor07 + 30
|
|
actualAnsiCode := baseAnsiCode
|
|
if lightBit == 1 {
|
|
actualAnsiCode += 60
|
|
}
|
|
styleAttr := 0
|
|
if boldBit == 1 {
|
|
styleAttr = 1
|
|
}
|
|
|
|
bashColor := fmt.Sprintf(`\[\033[%d;%dm\]`, styleAttr, actualAnsiCode)
|
|
colorsMap[colorComponentKeys[i]] = bashColor
|
|
// Ensure each definition is on a new line, directly usable in shell script
|
|
resultList.WriteString(fmt.Sprintf("%s='%s'\n", colorComponentKeys[i], bashColor))
|
|
}
|
|
|
|
// Add the AVATAR variable
|
|
avatarValue := "false"
|
|
if avatarEnabled {
|
|
avatarValue = "true"
|
|
}
|
|
resultList.WriteString(fmt.Sprintf("AVATAR='%s'\n", avatarValue))
|
|
|
|
// Remove the last newline character from the block of definitions if present for cleaner insertion
|
|
return colorsMap, strings.TrimSuffix(resultList.String(), "\n"), avatarEnabled, nil
|
|
}
|
|
|
|
func serveDecodedColorsOnlyHandler(w http.ResponseWriter, r *http.Request, encodedData string) {
|
|
_, formattedOutput, _, err := decodeColorLogic(encodedData)
|
|
if err != nil {
|
|
http.Error(w, err.Error(), http.StatusBadRequest)
|
|
return
|
|
}
|
|
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
|
|
// The formattedOutput from decodeColorLogic is already KEY='VAL'\nKEY2='VAL2'
|
|
// So it prints multiple lines as intended.
|
|
fmt.Fprintln(w, formattedOutput)
|
|
}
|
|
|
|
// serveFileWithColorsHandler serves files from the repo, potentially modifying bb.sh.
|
|
func serveFileWithColorsHandler(w http.ResponseWriter, r *http.Request, encodedData string, requestedFilePath string) {
|
|
// Note: The 'colorsMap' is not strictly needed for the new bb.sh logic,
|
|
// as 'formattedColorDefinitions' is used directly. But decodeColorLogic provides it.
|
|
_, formattedColorDefinitions, _, err := decodeColorLogic(encodedData)
|
|
if err != nil {
|
|
http.Error(w, fmt.Sprintf("Failed to decode colors: %v", err), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
cleanFilePath := filepath.Clean(requestedFilePath)
|
|
if strings.HasPrefix(cleanFilePath, "..") || strings.HasPrefix(cleanFilePath, "/") {
|
|
http.Error(w, "Invalid file path.", http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
fullPath := filepath.Join(localRepoPath, cleanFilePath)
|
|
absRepoPath, _ := filepath.Abs(localRepoPath)
|
|
absFilePath, _ := filepath.Abs(fullPath)
|
|
if !strings.HasPrefix(absFilePath, absRepoPath) {
|
|
http.Error(w, "Access to file path denied.", http.StatusForbidden)
|
|
return
|
|
}
|
|
|
|
fileInfo, err := os.Stat(fullPath)
|
|
if os.IsNotExist(err) {
|
|
http.Error(w, fmt.Sprintf("File not found: %s", requestedFilePath), http.StatusNotFound)
|
|
return
|
|
}
|
|
if err != nil {
|
|
http.Error(w, fmt.Sprintf("Error accessing file: %v", err), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
if fileInfo.IsDir() {
|
|
http.Error(w, fmt.Sprintf("Requested path is a directory: %s", requestedFilePath), http.StatusBadRequest)
|
|
return
|
|
}
|
|
|
|
if cleanFilePath == getBbPath {
|
|
originalContentBytes, err := os.ReadFile(fullPath)
|
|
if err != nil {
|
|
http.Error(w, fmt.Sprintf("Error reading %s: %v", getBbPath, err), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
originalContent := string(originalContentBytes)
|
|
originalContent = strings.Replace(originalContent, "git.cz0.cz", r.Host, -1)
|
|
originalContent = strings.Replace(originalContent, "/czoczo/BetterBash/raw/branch/master", fmt.Sprintf("/%s", encodedData), -1)
|
|
|
|
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
|
|
fmt.Fprint(w, originalContent)
|
|
} else if cleanFilePath == bbShellPath {
|
|
originalContentBytes, err := os.ReadFile(fullPath)
|
|
if err != nil {
|
|
http.Error(w, fmt.Sprintf("Error reading %s: %v", bbShellPath, err), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
originalContent := string(originalContentBytes)
|
|
|
|
var finalScript strings.Builder
|
|
|
|
// Split the original content to find the shebang and the rest of the script
|
|
lines := strings.SplitN(originalContent, "\n", 2)
|
|
firstLineOriginal := ""
|
|
restOfScript := ""
|
|
|
|
if len(lines) > 0 {
|
|
firstLineOriginal = lines[0]
|
|
}
|
|
|
|
// Correctly assign restOfScript
|
|
if len(lines) > 1 {
|
|
restOfScript = lines[1]
|
|
} else if len(lines) == 1 { // Script might be a single line or empty
|
|
if originalContent == firstLineOriginal { // single line script
|
|
restOfScript = ""
|
|
} else { // empty script, lines[0] would be ""
|
|
restOfScript = ""
|
|
}
|
|
}
|
|
|
|
|
|
if strings.HasPrefix(firstLineOriginal, "#!") {
|
|
finalScript.WriteString(firstLineOriginal) // Write shebang
|
|
finalScript.WriteString("\n") // Newline after shebang
|
|
finalScript.WriteString(formattedColorDefinitions) // This is KEY='VAL'\nKEY2='VAL2'\nAVATAR='true/false'
|
|
finalScript.WriteString("\n") // Ensure a newline after the injected block
|
|
if restOfScript != "" {
|
|
finalScript.WriteString(restOfScript)
|
|
}
|
|
} else {
|
|
// No shebang, or script didn't start with it.
|
|
// Per revised requirement, we should still try to inject.
|
|
// Prepend colors to the original content.
|
|
finalScript.WriteString(formattedColorDefinitions)
|
|
finalScript.WriteString("\n")
|
|
finalScript.WriteString(originalContent)
|
|
}
|
|
|
|
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
|
|
fmt.Fprint(w, finalScript.String())
|
|
} else {
|
|
http.ServeFile(w, r, fullPath)
|
|
}
|
|
}
|
|
|
|
func statsReportHandler(w http.ResponseWriter, r *http.Request) {
|
|
count := atomic.LoadUint64(&requestCounter)
|
|
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
|
|
fmt.Fprintf(w, "%d", count)
|
|
}
|
|
|
|
func rootPathHandler(w http.ResponseWriter, r *http.Request) {
|
|
http.Error(w, "Please provide an encoded string in the URL path (e.g., /YourEncodedString) or a file path (e.g. /YourEncodedString/path/to/file.sh)", http.StatusBadRequest)
|
|
}
|
|
|
|
func runGitCommand(dir string, args ...string) error {
|
|
cmd := exec.Command("git", args...)
|
|
if dir != "" {
|
|
cmd.Dir = dir
|
|
}
|
|
var out bytes.Buffer
|
|
var stderr bytes.Buffer
|
|
cmd.Stdout = &out
|
|
cmd.Stderr = &stderr
|
|
|
|
log.Printf("Running git command: git %s in dir '%s'", strings.Join(args, " "), dir)
|
|
err := cmd.Run()
|
|
if out.Len() > 0 {
|
|
log.Printf("git stdout: %s", out.String())
|
|
}
|
|
if stderr.Len() > 0 {
|
|
log.Printf("git stderr: %s", stderr.String())
|
|
}
|
|
if err != nil {
|
|
return fmt.Errorf("git %s failed: %v\nstderr: %s", strings.Join(args, " "), err, stderr.String())
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func setupRepo() error {
|
|
repoMutex.Lock()
|
|
defer repoMutex.Unlock()
|
|
|
|
if _, err := os.Stat(localRepoPath); os.IsNotExist(err) {
|
|
log.Printf("Local repository not found at %s. Cloning %s...", localRepoPath, gitRepoURL)
|
|
if err := runGitCommand("", "clone", gitRepoURL, localRepoPath); err != nil {
|
|
return fmt.Errorf("failed to clone repository: %w", err)
|
|
}
|
|
log.Printf("Repository cloned successfully into %s.", localRepoPath)
|
|
} else {
|
|
log.Printf("Local repository found at %s. Skipping clone.", localRepoPath)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func reloadRepoHandler(w http.ResponseWriter, r *http.Request) {
|
|
repoMutex.Lock()
|
|
defer repoMutex.Unlock()
|
|
|
|
log.Printf("Attempting to pull latest changes for repository at %s", localRepoPath)
|
|
if _, err := os.Stat(localRepoPath); os.IsNotExist(err) {
|
|
log.Printf("Local repository at %s does not exist. Cloning first.", localRepoPath)
|
|
if err := runGitCommand("", "clone", gitRepoURL, localRepoPath); err != nil {
|
|
http.Error(w, fmt.Sprintf("Failed to clone repository during reload: %v", err), http.StatusInternalServerError)
|
|
return
|
|
}
|
|
log.Printf("Repository cloned successfully during reload.")
|
|
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
|
|
fmt.Fprintln(w, "Repository was missing, cloned successfully.")
|
|
return
|
|
}
|
|
|
|
err := runGitCommand(localRepoPath, "fetch", "origin")
|
|
if err == nil {
|
|
err = runGitCommand(localRepoPath, "reset", "--hard", "origin/master")
|
|
}
|
|
if err != nil {
|
|
log.Printf("Hard reset failed (or fetch failed): %v. Attempting simple pull.", err)
|
|
err = runGitCommand(localRepoPath, "pull", "origin", "master")
|
|
}
|
|
|
|
if err != nil {
|
|
errMsg := fmt.Sprintf("Failed to pull latest changes: %v", err)
|
|
log.Println(errMsg)
|
|
http.Error(w, errMsg, http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
log.Println("Repository reloaded successfully.")
|
|
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
|
|
fmt.Fprintln(w, "Repository reloaded successfully.")
|
|
}
|
|
|
|
func mainRouter(w http.ResponseWriter, r *http.Request) {
|
|
if r.URL.Path == "/stats" {
|
|
statsReportHandler(w, r)
|
|
return
|
|
}
|
|
atomic.AddUint64(&requestCounter, 1)
|
|
|
|
if r.URL.Path == "/reload" {
|
|
reloadRepoHandler(w, r)
|
|
return
|
|
}
|
|
if r.URL.Path == "/" {
|
|
rootPathHandler(w, r)
|
|
return
|
|
}
|
|
|
|
trimmedPath := strings.TrimPrefix(r.URL.Path, "/")
|
|
parts := strings.SplitN(trimmedPath, "/", 2)
|
|
encodedData := parts[0]
|
|
|
|
if encodedData == "" {
|
|
rootPathHandler(w, r)
|
|
return
|
|
}
|
|
|
|
if len(parts) == 1 {
|
|
serveDecodedColorsOnlyHandler(w, r, encodedData)
|
|
} else if len(parts) == 2 {
|
|
filePath := parts[1]
|
|
if filePath == "" {
|
|
http.Error(w, "File path cannot be empty if a second slash is provided.", http.StatusBadRequest)
|
|
return
|
|
}
|
|
serveFileWithColorsHandler(w, r, encodedData, filePath)
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
if err := setupRepo(); err != nil {
|
|
log.Fatalf("❌ Failed to setup repository: %s\n", err)
|
|
}
|
|
|
|
http.HandleFunc("/", mainRouter)
|
|
port := "8080"
|
|
if p := os.Getenv("PORT"); p != "" {
|
|
port = p
|
|
}
|
|
|
|
log.Printf("🎨 Color Theme Backend & File Server starting on port %s (e.g., http://localhost:%s)\n", port, port)
|
|
log.Printf("Git Repo URL: %s", gitRepoURL)
|
|
log.Printf("Local Repo Path: ./%s", localRepoPath)
|
|
log.Printf("Special file for color injection: %s", bbShellPath)
|
|
log.Printf("Endpoints:")
|
|
log.Printf(" GET /<encoded_color_data> - Show color definitions")
|
|
log.Printf(" GET /<encoded_color_data>/<path> - Serve file from repo (e.g., /VcrS_H8A/removebb.sh)")
|
|
log.Printf(" Special: /<encoded_color_data>/%s for dynamic colors", bbShellPath)
|
|
log.Printf(" GET /reload - Pull latest from git master branch")
|
|
log.Printf(" GET /stats - Show request count")
|
|
log.Printf(" GET / - Show usage instructions")
|
|
|
|
if err := http.ListenAndServe(":"+port, nil); err != nil {
|
|
log.Fatalf("❌ Failed to start server: %s\n", err)
|
|
}
|
|
}
|
|
|