From c1eb7b0e9459de99d3112df79a02c8025b741614 Mon Sep 17 00:00:00 2001 From: Nixietab <75538775+nixietab@users.noreply.github.com> Date: Sun, 6 Sep 2026 13:24:35 -0300 Subject: [PATCH] first commit --- .gitignore | 1 + LICENSE | 339 +++++++++++++++++++++ README.md | 25 ++ chroot.go | 272 +++++++++++++++++ go.mod | 3 + main.go | 355 ++++++++++++++++++++++ ui.go | 453 ++++++++++++++++++++++++++++ zypper.go | 856 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 2304 insertions(+) create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 README.md create mode 100644 chroot.go create mode 100644 go.mod create mode 100644 main.go create mode 100644 ui.go create mode 100644 zypper.go diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b3c1f3a --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +vlcro diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..d159169 --- /dev/null +++ b/LICENSE @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Lesser General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. 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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, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision 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, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This 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. diff --git a/README.md b/README.md new file mode 100644 index 0000000..d2a5b2c --- /dev/null +++ b/README.md @@ -0,0 +1,25 @@ +# vlcro + +WIP README + +A parallel frontend for zypper. Speeds up slow zypper operations by running them in parallel across chroot-isolated workers + + +inspirated by [zypperoni](https://github.com/pavinjosdev/zypperoni) + + +## Build + +``` +go build -o vlcro . +``` + +To install copy to path + +## Usage + +``` +sudo vlcro [options] +``` + +Downloads are handled in parallel; the actual install is handed back to zypper. diff --git a/chroot.go b/chroot.go new file mode 100644 index 0000000..d736786 --- /dev/null +++ b/chroot.go @@ -0,0 +1,272 @@ +package main + +import ( + "crypto/rand" + "fmt" + "os" + "os/exec" + "path/filepath" + "sort" + "strings" + "sync" + "syscall" + "time" +) + +// mount tracker + +type MountTracker struct { + mounts []string + mu sync.Mutex +} + +func (mt *MountTracker) Add(path string) { + mt.mu.Lock() + defer mt.mu.Unlock() + mt.mounts = append(mt.mounts, path) +} + +func (mt *MountTracker) GetAll() []string { + mt.mu.Lock() + defer mt.mu.Unlock() + result := make([]string, len(mt.mounts)) + copy(result, mt.mounts) + sort.SliceStable(result, func(i, j int) bool { + return len(result[i]) > len(result[j]) + }) + return result +} + +func (mt *MountTracker) Reset() { + mt.mu.Lock() + defer mt.mu.Unlock() + mt.mounts = nil +} + +// mount helpers + +func findActiveMountCount(path string) int { + if path == "" { + return 0 + } + cmd := exec.Command("findmnt", "-R", "-n", "-o", "TARGET", path) + out, err := cmd.Output() + if err != nil { + return 0 + } + lines := strings.Split(strings.TrimSpace(string(out)), "\n") + if len(lines) == 1 && lines[0] == "" { + return 0 + } + return len(lines) +} + +func hasActiveMounts(path string) bool { + return findActiveMountCount(path) > 0 +} + +func retryMount(source, target, fstype string, flags uintptr, data string, maxRetries int) error { + var lastErr error + for attempt := 0; attempt < maxRetries; attempt++ { + if attempt > 0 { + time.Sleep(retryDelay) + } + err := syscall.Mount(source, target, fstype, flags, data) + if err == nil { + debugf("Mounted %s -> %s", source, target) + return nil + } + lastErr = err + debugf("Mount attempt %d failed for %s: %v", attempt+1, target, err) + } + return fmt.Errorf("mount %s failed after %d attempts: %w", target, maxRetries, lastErr) +} + +func retryUnmount(target string, flags int, maxRetries int) error { + var lastErr error + for attempt := 0; attempt < maxRetries; attempt++ { + if attempt > 0 { + time.Sleep(retryDelay) + } + err := syscall.Unmount(target, flags) + if err == nil || err == syscall.EINVAL || err == syscall.ENOENT { + return nil + } + lastErr = err + debugf("Unmount attempt %d failed for %s: %v", attempt+1, target, err) + } + return fmt.Errorf("unmount %s failed after %d attempts: %w", target, maxRetries, lastErr) +} + +// chroot setup + +func setupChroot(tmpDir, uuid string, needDev bool, tracker *MountTracker) error { + base := filepath.Join(tmpDir, uuid) + rootfs := filepath.Join(base, "rootfs") + + dirs := []string{ + rootfs, + filepath.Join(base, "run"), + filepath.Join(base, "var", "cache", "zypp"), + filepath.Join(base, "var", "lib", "ca-certificates"), + } + for _, d := range dirs { + if err := os.MkdirAll(d, 0755); err != nil { + return fmt.Errorf("mkdir %s: %w", d, err) + } + } + + resolvPath := "/etc/resolv.conf" + if linkTarget, err := os.Readlink(resolvPath); err == nil { + if !filepath.IsAbs(linkTarget) { + linkTarget = filepath.Join("/etc", linkTarget) + } + target := filepath.Join(base, linkTarget) + os.MkdirAll(filepath.Dir(target), 0755) + if data, err := os.ReadFile(linkTarget); err == nil { + os.WriteFile(target, data, 0644) + } + } else if data, err := os.ReadFile(resolvPath); err == nil { + target := filepath.Join(base, resolvPath) + os.MkdirAll(filepath.Dir(target), 0755) + os.WriteFile(target, data, 0644) + } + + if err := retryMount("/", rootfs, "", syscall.MS_BIND|syscall.MS_RDONLY, "", maxRetries); err != nil { + return fmt.Errorf("mount rootfs: %w", err) + } + tracker.Add(rootfs) + + if needDev { + devPath := filepath.Join(rootfs, "dev") + if err := retryMount("/dev", devPath, "", syscall.MS_BIND, "", maxRetries); err != nil { + return fmt.Errorf("mount /dev bind: %w", err) + } + tracker.Add(devPath) + + tmpPath := filepath.Join(rootfs, "tmp") + if err := retryMount("tmpfs", tmpPath, "tmpfs", 0, "", maxRetries); err != nil { + return fmt.Errorf("mount tmpfs: %w", err) + } + tracker.Add(tmpPath) + } + + runPath := filepath.Join(rootfs, "run") + if err := retryMount(filepath.Join(base, "run"), runPath, "", syscall.MS_BIND, "", maxRetries); err != nil { + return fmt.Errorf("mount run: %w", err) + } + tracker.Add(runPath) + + varPath := filepath.Join(rootfs, "var") + if err := retryMount(filepath.Join(base, "var"), varPath, "", syscall.MS_BIND, "", maxRetries); err != nil { + return fmt.Errorf("mount var: %w", err) + } + tracker.Add(varPath) + + cachePath := filepath.Join(rootfs, "var", "cache", "zypp") + if err := retryMount("/var/cache/zypp", cachePath, "", syscall.MS_BIND, "", maxRetries); err != nil { + debugf("Warning: failed to mount cache (non-critical): %v", err) + } else { + tracker.Add(cachePath) + } + + certPath := filepath.Join(rootfs, "var", "lib", "ca-certificates") + if err := retryMount("/var/lib/ca-certificates", certPath, "", syscall.MS_BIND|syscall.MS_RDONLY, "", maxRetries); err != nil { + debugf("Warning: failed to mount ca-certs (non-critical): %v", err) + } else { + tracker.Add(certPath) + } + + return nil +} + +// unmount + +func unmountAll(tmpDir string, tracker *MountTracker) error { + if tmpDir == "" { + return nil + } + + mounts := tracker.GetAll() + var errs []string + + for _, mountPath := range mounts { + cmd := exec.Command("findmnt", "-n", "-o", "TARGET", mountPath) + if err := cmd.Run(); err != nil { + continue + } + + if err := retryUnmount(mountPath, syscall.MNT_DETACH, maxRetries); err != nil { + debugf("Failed to unmount %s: %v", mountPath, err) + if err := syscall.Unmount(mountPath, syscall.MNT_DETACH|syscall.MNT_FORCE); err != nil { + errs = append(errs, fmt.Sprintf("%s: %v", mountPath, err)) + } + } + } + + if len(errs) > 0 { + warningf("Some unmounts failed: %s", strings.Join(errs, "; ")) + } + return nil +} + +// cleanup + +func vlcroCleanup(tmpDir string, tracker *MountTracker) { + releaseZyppLock() + + if tmpDir == "" { + return + } + + if _, err := os.Stat(tmpDir); os.IsNotExist(err) { + return + } + + absPath, err := filepath.Abs(tmpDir) + if err != nil || !strings.HasPrefix(absPath, "/tmp/vlcro_") { + errorf("Refusing to cleanup unsafe temp directory: %s", tmpDir) + return + } + + infof("%s", colorText(colorInfo, "Cleaning up temp mounts...")) + unmountAll(tmpDir, tracker) + + time.Sleep(500 * time.Millisecond) + + for attempt := 0; attempt < 5; attempt++ { + if !hasActiveMounts(tmpDir) { + break + } + warningf("Active mounts still detected under %s, retrying unmount...", tmpDir) + unmountAll(tmpDir, tracker) + time.Sleep(500 * time.Millisecond) + } + + if hasActiveMounts(tmpDir) { + warningf("Could not unmount all filesystems under %s. Skipping temp directory removal.", tmpDir) + return + } + + infof("%s", colorText(colorInfo, "Cleaning up temp directory...")) + for attempt := 0; attempt < 3; attempt++ { + if err := os.RemoveAll(tmpDir); err == nil { + return + } + time.Sleep(500 * time.Millisecond) + } + + warningf("Could not fully remove temp directory %s (will clean up at next boot)", tmpDir) +} + +// uuid + +func randomUUID() string { + b := make([]byte, 16) + if _, err := rand.Read(b); err != nil { + return fmt.Sprintf("fallback-%d", time.Now().UnixNano()) + } + b[6] = (b[6] & 0x0f) | 0x40 + b[8] = (b[8] & 0x3f) | 0x80 + return fmt.Sprintf("%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:16]) +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..7143027 --- /dev/null +++ b/go.mod @@ -0,0 +1,3 @@ +module vlcro + +go 1.26.2 diff --git a/main.go b/main.go new file mode 100644 index 0000000..c9f2946 --- /dev/null +++ b/main.go @@ -0,0 +1,355 @@ +package main + +import ( + "context" + "fmt" + "os" + "os/exec" + "os/signal" + "strconv" + "strings" + "syscall" +) + +const ( + vlcroVersion = "0.1.0" + zypperPidFile = "/run/zypp.pid" + maxRetries = 3 + retryDelay = 100_000_000 // 100ms as int64 nanoseconds +) + +var cfg *config + +type config struct { + version bool + noConfirm bool + jobs int + debug bool + noColor bool + command string + force bool + downloadOnly bool + packages []string + txInfo []packageInfo // parsed packages from dry-run +} + +// CLI + +func printHelp() { + // Ensure cfg is available for colorStart + if cfg == nil { + cfg = &config{jobs: 10} + } + + // highlight colors + hi := colorStart(colorInfo) // section headers / "vlcro" + hc := colorStart(colorWarning) // usage keyword + he := colorStart(colorError) // options + hd := colorStart(colorInput) // command bold-ish + d := "\033[0m" + if !isTerminal || cfg.noColor { + d = "" + } + + usage := fmt.Sprintf(`%susage%s: vlcro [-h] [-v] [-y] [-j N] [--debug] [--no-color] +%s {refresh,ref,dist-upgrade,dup,install,in,install-new-recommends,inr} ... + +%s%s%s (%sv%s%s) makes zypper faster by running slow operations in parallel. + +%soptions%s: + %s-h, --help%s show this help message and exit + %s-v, -V, --version%s print version number and exit + %s-y, --no-confirm%s automatic yes to prompts, run non-interactively + %s-j, --jobs%s number of parallel operations (1-64, default: 10) + %s--debug%s enable debug output + %s--no-color%s disable color output + +%scommands%s: + %srefresh%s (%sref%s) refresh all enabled repos + %s-f, --force%s force a complete refresh + + %sdist-upgrade%s (%sdup%s) perform distribution upgrade + %s-d, --download-only%s download packages without installing + + %sinstall%s (%sin%s) install one or more packages + %s-d, --download-only%s download packages without installing + %s%s package name(s) to install + + %sinstall-new-recommends%s (%sinr%s) + install new packages recommended by already installed ones + %s-d, --download-only%s download packages without installing +`, + hc, d, hc, + hi, "vlcro", d, hi, vlcroVersion, d, + hi, d, + he, d, he, d, he, d, he, d, he, d, he, d, + hi, d, + hd, d, hd, d, he, d, + hd, d, hd, d, he, d, + hd, d, hd, d, he, d, hd, d, + hd, d, hd, d, he, d) + + fmt.Print(usage) +} + +func parseArgs() *config { + c, err := parseArgsInto(os.Args[1:]) + if err != nil { + fmt.Fprintln(os.Stderr, err) + os.Exit(1) + } + return c +} + +func parseJobs(c *config, value string) error { + n, err := strconv.Atoi(value) + if err != nil { + return fmt.Errorf("Invalid jobs value: %s", value) + } + if n < 1 || n > 64 { + return fmt.Errorf("Invalid jobs value: %d. Must be between 1 and 64", n) + } + c.jobs = n + return nil +} + +func isRefreshCommand(cmd string) bool { + return cmd == "refresh" || cmd == "ref" +} + +func isInstallCommand(cmd string) bool { + return cmd == "install" || cmd == "in" +} + +func isKnownCommand(cmd string) bool { + switch cmd { + case "refresh", "ref", "dist-upgrade", "dup", "install", "in", + "install-new-recommends", "inr": + return true + } + return false +} + +func parseArgsInto(args []string) (*config, error) { + c := &config{jobs: 10} + i := 0 + cmdFound := false + packagesOnly := false + + for i < len(args) { + arg := args[i] + consumedNext := false + + switch { + case arg == "-h" || arg == "--help": + printHelp() + os.Exit(0) + case arg == "-v" || arg == "-V" || arg == "--version": + c.version = true + i++ + continue + case arg == "-y" || arg == "--no-confirm": + c.noConfirm = true + i++ + continue + case arg == "--debug": + c.debug = true + i++ + continue + case arg == "--no-color": + c.noColor = true + i++ + continue + case arg == "-f" || arg == "--force": + c.force = true + i++ + continue + case arg == "-d" || arg == "--download-only": + c.downloadOnly = true + i++ + continue + case strings.HasPrefix(arg, "--"): + name, value, hasValue := strings.Cut(arg, "=") + if name == "--jobs" { + if !hasValue { + if i+1 >= len(args) { + return nil, fmt.Errorf("Error: --jobs requires an argument") + } + value = args[i+1] + i += 2 + } else { + i++ + } + if err := parseJobs(c, value); err != nil { + return nil, err + } + continue + } + return nil, fmt.Errorf("Unknown option: %s", arg) + case strings.HasPrefix(arg, "-") && len(arg) > 1: + body := arg[1:] + for k := 0; k < len(body); k++ { + switch body[k] { + case 'h': + printHelp() + os.Exit(0) + case 'v', 'V': + c.version = true + case 'y': + c.noConfirm = true + case 'f': + c.force = true + case 'd': + c.downloadOnly = true + case 'j': + rest := body[k+1:] + if strings.HasPrefix(rest, "=") { + rest = rest[1:] + } + if rest == "" { + if i+1 >= len(args) { + return nil, fmt.Errorf("Error: --jobs requires an argument") + } + rest = args[i+1] + consumedNext = true + } + if err := parseJobs(c, rest); err != nil { + return nil, err + } + k = len(body) + default: + return nil, fmt.Errorf("Unknown option: -%s", string(body[k])) + } + } + if !consumedNext { + i++ + } else { + i += 2 + } + continue + default: + if !cmdFound { + c.command = arg + cmdFound = true + packagesOnly = isInstallCommand(arg) + i++ + continue + } + if !packagesOnly { + return nil, fmt.Errorf("Unexpected argument: %s", arg) + } + c.packages = append(c.packages, arg) + i++ + continue + } + } + + if !cmdFound { + return c, nil + } + + if !isKnownCommand(c.command) { + return nil, fmt.Errorf("Unknown command: %s", c.command) + } + if c.force && !isRefreshCommand(c.command) { + return nil, fmt.Errorf("Option --force is only valid with the refresh command") + } + if c.downloadOnly && isRefreshCommand(c.command) { + return nil, fmt.Errorf("Option --download-only is not valid with the refresh command") + } + + return c, nil +} + +// dependency check (exec.LookPath) + +func checkDependencies() { + required := []string{"zypper", "findmnt", "bash"} + missing := []string{} + for _, program := range required { + if _, err := exec.LookPath(program); err != nil { + missing = append(missing, program) + } + } + if len(missing) > 0 { + msg := fmt.Sprintf("Bailing out, missing required dependencies: %s\n"+ + "The following are required for vlcro to function: %s", + strings.Join(missing, ", "), + strings.Join(required, ", ")) + errorf("%s", colorText(colorError, msg)) + os.Exit(4) + } +} + +// main + +func main() { + cfg = parseArgs() + + if cfg.version { + fmt.Printf("vlcro v%s\n", vlcroVersion) + return + } + if cfg.command == "" { + printHelp() + return + } + + if os.Getuid() != 0 { + errorf("%s", colorText(colorError, "Bailing out, program must be run with root privileges")) + os.Exit(3) + } + + checkDependencies() + + if pid, program := checkZypperRunning(); pid != 0 { + msg := fmt.Sprintf("zypper is already invoked by the application with pid %d (%s).\nClose this application before trying again.", pid, program) + errorf("%s", colorText(colorError, msg)) + os.Exit(5) + } + + tmpDir, err := os.MkdirTemp("/tmp", "vlcro_") + if err != nil { + errorf("%s", colorText(colorError, fmt.Sprintf("Failed to create temp directory: %v", err))) + os.Exit(1) + } + + var exitCode int + defer func() { + os.Exit(exitCode) + }() + + ctx, cancel := context.WithCancel(context.Background()) + defer cancel() + + sigChan := make(chan os.Signal, 1) + signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM) + go func() { + <-sigChan + infof("%s", colorText(colorInfo, "Cancelling pending tasks...")) + os.Stdin.Close() + cancel() + }() + + switch cfg.command { + case "refresh", "ref": + if err := handleRefresh(ctx, tmpDir); err != nil { + exitCode = 1 + } + case "dist-upgrade", "dup": + if err := handleDistUpgrade(ctx, tmpDir); err != nil { + exitCode = 1 + } + case "install", "in": + if err := handleInstall(ctx, tmpDir); err != nil { + exitCode = 1 + } + case "install-new-recommends", "inr": + if err := handleINR(ctx, tmpDir); err != nil { + exitCode = 1 + } + default: + printHelp() + exitCode = 1 + } +} diff --git a/ui.go b/ui.go new file mode 100644 index 0000000..11e2c02 --- /dev/null +++ b/ui.go @@ -0,0 +1,453 @@ +package main + +import ( + "fmt" + "os" + "strings" + "sync" + "syscall" + "time" + "unsafe" +) + +// color system + +type colorType string + +const ( + colorInput colorType = "input" + colorSuccess colorType = "success" + colorInfo colorType = "info" + colorWarning colorType = "warning" + colorError colorType = "error" + colorException colorType = "exception" +) + +var colorCodes = map[colorType][3]int{ + colorInput: {0, 200, 200}, + colorSuccess: {80, 220, 80}, + colorInfo: {255, 175, 50}, + colorWarning: {255, 220, 60}, + colorError: {255, 90, 90}, + colorException: {220, 120, 255}, +} + +var isTerminal = func() bool { + fi, err := os.Stdout.Stat() + if err != nil { + return false + } + return fi.Mode()&os.ModeCharDevice != 0 +}() + +func colorText(textType colorType, text string) string { + if !isTerminal || (cfg != nil && cfg.noColor) { + return text + } + c, ok := colorCodes[textType] + if !ok { + return text + } + return fmt.Sprintf("\033[38;2;%d;%d;%dm%s\033[0m", c[0], c[1], c[2], text) +} + +func colorStart(textType colorType) string { + if !isTerminal || (cfg != nil && cfg.noColor) { + return "" + } + c, ok := colorCodes[textType] + if !ok { + return "" + } + return fmt.Sprintf("\033[38;2;%d;%d;%dm", c[0], c[1], c[2]) +} + +// terminal width + +func getTerminalWidth() int { + if !isTerminal { + return 80 + } + type winsize struct { + Row uint16 + Col uint16 + Xpixel uint16 + Ypixel uint16 + } + ws := winsize{} + _, _, errno := syscall.Syscall(syscall.SYS_IOCTL, uintptr(os.Stdout.Fd()), uintptr(0x5413), uintptr(unsafe.Pointer(&ws))) + if errno != 0 || ws.Col == 0 { + return 80 + } + return int(ws.Col) +} + +// output serialization + +var outputMu sync.Mutex + +// logging + +func logMsg(level, format string, args ...interface{}) { + outputMu.Lock() + defer outputMu.Unlock() + + _clearProgressLine() + + msg := fmt.Sprintf(format, args...) + ts := time.Now().Format("15:04:05") + fmt.Fprintf(os.Stdout, "%s %s %s\n", ts, colorText(colorType(strings.ToLower(level)), fmt.Sprintf("%-7s", level)), msg) +} + +func infof(format string, args ...interface{}) { logMsg("INFO", format, args...) } +func errorf(format string, args ...interface{}) { logMsg("ERROR", format, args...) } +func warningf(format string, args ...interface{}) { + logMsg("WARNING", format, args...) +} +func debugf(format string, args ...interface{}) { + if cfg.debug { + logMsg("DEBUG", format, args...) + } +} + +// status messages + +func statusMsg(text string) { + outputMu.Lock() + defer outputMu.Unlock() + _clearProgressLine() + fmt.Printf("%s... ", text) + fmt.Println(colorText(colorSuccess, "Done")) +} + +// download line + +func downloadLine(counter int, name string, size float64) { + outputMu.Lock() + defer outputMu.Unlock() + _clearProgressLine() + if size > 0 { + fmt.Printf("Get:%-3d %s [%s]\n", counter, colorText(colorInfo, name), formatSize(size)) + } else { + fmt.Printf("Get:%-3d %s\n", counter, colorText(colorInfo, name)) + } +} + +// fetch summary + +func fetchSummary(totalBytes float64, elapsed time.Duration) { + outputMu.Lock() + defer outputMu.Unlock() + _clearProgressLine() + speed := float64(0) + if elapsed.Seconds() > 0 { + speed = totalBytes / elapsed.Seconds() + } + fmt.Printf("Fetched %s in %s", formatSize(totalBytes), formatDuration(elapsed)) + if speed > 0 { + fmt.Printf(" (%s/s)", formatSpeed(speed)) + } + fmt.Println() +} + +func formatSpeed(bytesPerSec float64) string { + const KB = 1000 + const MB = 1000 * KB + switch { + case bytesPerSec >= MB: + return fmt.Sprintf("%.2f MB/s", bytesPerSec/MB) + case bytesPerSec >= KB: + return fmt.Sprintf("%.2f kB/s", bytesPerSec/KB) + default: + return fmt.Sprintf("%.0f B/s", bytesPerSec) + } +} + +// size formatting + +func formatSize(bytes float64) string { + const ( + KiB = 1000 + MiB = 1000 * KiB + GiB = 1000 * MiB + ) + switch { + case bytes >= GiB: + return fmt.Sprintf("%.2f GiB", bytes/GiB) + case bytes >= MiB: + return fmt.Sprintf("%.2f MiB", bytes/MiB) + case bytes >= KiB: + return fmt.Sprintf("%.2f KiB", bytes/KiB) + default: + return fmt.Sprintf("%.0f B", bytes) + } +} + +func formatDuration(d time.Duration) string { + if d < time.Minute { + return fmt.Sprintf("%ds", int(d.Seconds())) + } + if d >= time.Hour { + h := int(d.Hours()) + m := int(d.Minutes()) % 60 + s := int(d.Seconds()) % 60 + if h >= 100 { + return fmt.Sprintf("%dh%02dm", h, m) + } + return fmt.Sprintf("%dh%02dm%02ds", h, m, s) + } + return fmt.Sprintf("%dm%02ds", int(d.Minutes()), int(d.Seconds())%60) +} + +// progress tracking + +type progressState struct { + mu sync.Mutex + total int + completed int + startTime time.Time + drawn bool + spinnerIdx int + stop chan struct{} +} + +var prog *progressState + +var spinnerChars = [4]byte{'|', '/', '-', '\\'} + +func newProgressState(total int) *progressState { + return &progressState{ + total: total, + startTime: time.Now(), + stop: make(chan struct{}), + } +} + +func (p *progressState) increment() { + p.mu.Lock() + defer p.mu.Unlock() + if p.completed < p.total { + p.completed++ + } +} + +func (p *progressState) startTicker() { + go func() { + ticker := time.NewTicker(200 * time.Millisecond) + defer ticker.Stop() + for { + select { + case <-p.stop: + return + case <-ticker.C: + outputMu.Lock() + _drawProgressLine() + outputMu.Unlock() + } + } + }() +} + +func (p *progressState) stopTicker() { + close(p.stop) +} + +func _clearProgressLine() { + if prog == nil || !prog.drawn || !isTerminal || cfg.noColor { + return + } + fmt.Print("\r\033[K") + prog.drawn = false +} + +func _drawProgressLine() { + if prog == nil || !isTerminal || cfg.noColor || prog.total == 0 { + return + } + + prog.mu.Lock() + completed := prog.completed + total := prog.total + startTime := prog.startTime + prog.mu.Unlock() + + // Refresh terminal width each frame so a live resize never wraps the line. + width := getTerminalWidth() + + prog.spinnerIdx++ + + fmt.Print("\r\033[K" + buildProgressLine(width, completed, total, time.Since(startTime), prog.spinnerIdx)) + prog.drawn = true +} + +func buildProgressLine(width, completed, total int, elapsed time.Duration, spinnerIdx int) string { + percent := 0 + if total > 0 { + percent = int(float64(completed) / float64(total) * 100) + } + + // overall bar: "Progress: [ NN%] [####.....]" gracefully stolen from APT + prefix := fmt.Sprintf("Progress: [%3d%%] [%c ", percent, spinnerChars[spinnerIdx%len(spinnerChars)]) + + suffix := fmt.Sprintf("] %d/%d", completed, total) + + if completed > 0 && elapsed.Seconds() > 1 { + rate := float64(completed) / elapsed.Seconds() + remaining := float64(total-completed) / rate + suffix += fmt.Sprintf(" %s", formatDuration(time.Duration(remaining*float64(time.Second)))) + } + + barW := width - len(prefix) - len(suffix) + if barW < 1 { + line := prefix + suffix + if len(line) > width { + line = line[:width] + } + return line + } + + filled := int(float64(barW) * float64(percent) / 100) + if filled > barW { + filled = barW + } + bar := strings.Repeat("#", filled) + strings.Repeat(".", barW-filled) + + return prefix + colorText(colorInfo, bar) + suffix +} + +func (p *progressState) finish() { + p.stopTicker() + outputMu.Lock() + defer outputMu.Unlock() + _clearProgressLine() + fmt.Println() +} + +// transaction summary + +type packageInfo struct { + Name string + Edition string + Arch string + Action string + Size float64 +} + +func (p packageInfo) String() string { + return fmt.Sprintf("%s-%s.%s", p.Name, p.Edition, p.Arch) +} + +func printTransactionSummary(installs, removes []packageInfo, downloadSize, diffBytes float64, numPkgs int) { + outputMu.Lock() + defer outputMu.Unlock() + _clearProgressLine() + + fmt.Println() + + // Count upgrades vs new installs + nUpgrades := 0 + nInstalls := 0 + for _, pkg := range installs { + if pkg.Edition != "" && pkg.Arch != "" { + nUpgrades++ + } else { + nInstalls++ + } + } + nRemoves := len(removes) + + // Packages to download (upgrades) + if nUpgrades > 0 { + names := make([]string, nUpgrades) + for i, pkg := range installs { + if i >= nUpgrades { + break + } + names[i] = colorText(colorInfo, pkg.String()) + } + fmt.Printf("The following packages will be upgraded:\n") + printWrappedNames(names, getTerminalWidth(), " ") + fmt.Println() + } + + // New installs + if nInstalls > 0 { + names := make([]string, nInstalls) + for i := nUpgrades; i < len(installs) && i-nUpgrades < nInstalls; i++ { + names[i-nUpgrades] = colorText(colorInfo, installs[i].String()) + } + fmt.Printf("The following NEW packages will be installed:\n") + printWrappedNames(names, getTerminalWidth(), " ") + fmt.Println() + } + + // Removed packages + if nRemoves > 0 { + names := make([]string, nRemoves) + for i, pkg := range removes { + names[i] = colorText(colorError, pkg.String()) + } + fmt.Printf("The following packages will be REMOVED:\n") + printWrappedNames(names, getTerminalWidth(), " ") + fmt.Println() + } + + // Summary line + parts := []string{} + if nUpgrades > 0 { + parts = append(parts, fmt.Sprintf("%d upgraded", nUpgrades)) + } + if nInstalls > 0 { + parts = append(parts, fmt.Sprintf("%d newly installed", nInstalls)) + } + if nRemoves > 0 { + parts = append(parts, fmt.Sprintf("%d to remove", nRemoves)) + } + parts = append(parts, fmt.Sprintf("%d not upgraded", 0)) + fmt.Printf("%s.\n", strings.Join(parts, ", ")) + + // Download and space info + if downloadSize > 0 { + fmt.Printf("Need to get %s of archives.\n", formatSize(downloadSize)) + } + + spacePrefix := "" + if diffBytes >= 0 { + spacePrefix = "+" + } + fmt.Printf("After this operation, %s%s of additional disk space will be used.\n", + spacePrefix, formatSize(diffBytes)) +} + +// printWrappedNames prints package names wrapped to fit within termWidth. +func printWrappedNames(names []string, termWidth int, indent string) { + lineLen := len(indent) + first := true + for _, name := range names { + nameLen := len(name) + if !first && lineLen+1+nameLen > termWidth-2 { + fmt.Println() + lineLen = len(indent) + first = true + } + if !first { + fmt.Print(" ") + lineLen++ + } + fmt.Printf("%s%s", indent, name) + if first { + lineLen += nameLen + first = false + } else { + lineLen += nameLen + } + } + fmt.Println() +} + +func min(a, b int) int { + if a < b { + return a + } + return b +} diff --git a/zypper.go b/zypper.go new file mode 100644 index 0000000..36ff478 --- /dev/null +++ b/zypper.go @@ -0,0 +1,856 @@ +package main + +import ( + "bufio" + "bytes" + "context" + "encoding/xml" + "fmt" + "io" + "os" + "os/exec" + "path/filepath" + "sort" + "strings" + "sync" + "syscall" + "time" +) + +// zypper host execution (no shell, no bash) + +func zypperHostExec(args []string) (string, int) { + cmd := exec.Command("zypper", args...) + cmd.Env = []string{ + "PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin", + "HOME=/root", + "LANG=C.UTF-8", + } + output, err := cmd.Output() + out := strings.TrimSpace(string(output)) + if err != nil { + if exitErr, ok := err.(*exec.ExitError); ok { + return out, exitErr.ExitCode() + } + return out, -1 + } + return out, 0 +} + +func zypperDryRun(extraArgs []string) (string, int) { + args := []string{"--non-interactive", "--no-cd", "--xmlout"} + args = append(args, extraArgs...) + cmd := exec.Command("zypper", args...) + output, err := cmd.Output() + out := strings.TrimSpace(string(output)) + if err != nil { + if exitErr, ok := err.(*exec.ExitError); ok { + return out, exitErr.ExitCode() + } + return out, -1 + } + return out, 0 +} + +// zypper chroot execution + +func runZypper(ctx context.Context, rootfs string, args ...string) (stdout, stderr string, exitCode int, err error) { + info, err := os.Stat(rootfs) + if err != nil { + return "", "", -1, fmt.Errorf("rootfs does not exist: %w", err) + } + if !info.IsDir() { + return "", "", -1, fmt.Errorf("rootfs is a not a directory") + } + + cmd := exec.CommandContext(ctx, "/usr/bin/zypper", args...) + cmd.SysProcAttr = &syscall.SysProcAttr{Chroot: rootfs} + cmd.Dir = "/" + cmd.Env = []string{ + "PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin", + "ZYPP_CURL2=1", + "ZYPP_PCK_PRELOAD=1", + "ZYPP_SINGLE_RPMTRANS=1", + "HOME=/root", + "LANG=C.UTF-8", + } + cmd.Stdin = nil + + var outBuf, errBuf bytes.Buffer + cmd.Stdout = &outBuf + cmd.Stderr = &errBuf + + err = cmd.Run() + if err != nil { + if exitErr, ok := err.(*exec.ExitError); ok { + exitCode = exitErr.ExitCode() + } else { + exitCode = -1 + } + } + return outBuf.String(), errBuf.String(), exitCode, err +} + +// handover (terminal passthrough) + +func handover(command string) int { + cmd := exec.Command("bash", "-c", command) + cmd.Stdin = os.Stdin + cmd.Stdout = os.Stdout + cmd.Stderr = os.Stderr + if err := cmd.Run(); err != nil { + if exitErr, ok := err.(*exec.ExitError); ok { + return exitErr.ExitCode() + } + return 1 + } + return 0 +} + +// xml parsing helpers + +func findElements(xmlData, name string) []map[string]string { + decoder := xml.NewDecoder(strings.NewReader(xmlData)) + var results []map[string]string + for { + tok, err := decoder.Token() + if err == io.EOF { + break + } + if err != nil { + continue + } + if se, ok := tok.(xml.StartElement); ok && se.Name.Local == name { + attrs := make(map[string]string) + for _, attr := range se.Attr { + attrs[attr.Name.Local] = attr.Value + } + results = append(results, attrs) + } + } + return results +} + +func findMessages(xmlData string) []string { + decoder := xml.NewDecoder(strings.NewReader(xmlData)) + var results []string + for { + tok, err := decoder.Token() + if err == io.EOF { + break + } + if err != nil { + continue + } + if se, ok := tok.(xml.StartElement); ok && se.Name.Local == "message" { + var text strings.Builder + for { + innerTok, err := decoder.Token() + if err == io.EOF || err != nil { + break + } + if ee, ok := innerTok.(xml.EndElement); ok && ee.Name.Local == "message" { + break + } + if cd, ok := innerTok.(xml.CharData); ok { + text.Write(cd) + } + } + results = append(results, text.String()) + } + } + return results +} + +func parseInstallSummary(xmlData string) (downloadSize, diffBytes float64, numPkgs int, found bool) { + for _, s := range findElements(xmlData, "install-summary") { + debugf("install-summary attrs: download-size=%q space-usage-diff=%q packages-to-change=%q", + s["download-size"], s["space-usage-diff"], s["packages-to-change"]) + fmt.Sscanf(s["download-size"], "%f", &downloadSize) + fmt.Sscanf(s["space-usage-diff"], "%f", &diffBytes) + fmt.Sscanf(s["packages-to-change"], "%d", &numPkgs) + found = true + } + if !found { + return + } + if downloadSize == 0 { + downloadSize = findChildTextFloat(xmlData, "install-summary", "download-size") + } + if diffBytes == 0 { + diffBytes = findChildTextFloat(xmlData, "install-summary", "space-usage-diff") + } + if numPkgs == 0 { + numPkgs = int(findChildTextFloat(xmlData, "install-summary", "packages-to-change")) + } + return +} + +func findChildTextFloat(xmlData, parent, child string) float64 { + decoder := xml.NewDecoder(strings.NewReader(xmlData)) + inParent := 0 + for { + tok, err := decoder.Token() + if err != nil { + break + } + switch t := tok.(type) { + case xml.StartElement: + if t.Name.Local == parent { + inParent++ + } else if inParent > 0 && t.Name.Local == child { + var text strings.Builder + for { + innerTok, err := decoder.Token() + if err != nil { + break + } + if ee, ok := innerTok.(xml.EndElement); ok && ee.Name.Local == child { + break + } + if cd, ok := innerTok.(xml.CharData); ok { + text.Write(cd) + } + } + var val float64 + fmt.Sscanf(strings.TrimSpace(text.String()), "%f", &val) + return val + } + case xml.EndElement: + if t.Name.Local == parent && inParent > 0 { + inParent-- + } + } + } + return 0 +} + +func parseAllSolvables(xmlData string) []packageInfo { + var pkgs []packageInfo + for _, s := range findElements(xmlData, "solvable") { + if s["type"] == "package" { + var size float64 + fmt.Sscanf(s["size"], "%f", &size) + pkgs = append(pkgs, packageInfo{ + Name: s["name"], + Edition: s["edition"], + Arch: s["arch"], + Action: "install", + Size: size, + }) + } + } + return pkgs +} + +func parseToUpdate(xmlData string) []packageInfo { + var pkgs []packageInfo + for _, u := range findElements(xmlData, "update") { + if u["kind"] == "package" { + var size float64 + fmt.Sscanf(u["size"], "%f", &size) + pkgs = append(pkgs, packageInfo{ + Name: u["name"], + Edition: u["edition"], + Arch: u["arch"], + Action: "upgrade", + Size: size, + }) + } + } + return pkgs +} + +func parseToRemove(xmlData string) []packageInfo { + decoder := xml.NewDecoder(strings.NewReader(xmlData)) + var results []packageInfo + inToRemove := 0 + for { + tok, err := decoder.Token() + if err == io.EOF { + break + } + if err != nil { + continue + } + switch t := tok.(type) { + case xml.StartElement: + if t.Name.Local == "to-remove" { + inToRemove++ + } else if inToRemove > 0 && t.Name.Local == "solvable" { + attrs := make(map[string]string) + for _, attr := range t.Attr { + attrs[attr.Name.Local] = attr.Value + } + if attrs["type"] == "package" { + results = append(results, packageInfo{ + Name: attrs["name"], + Edition: attrs["edition"], + Arch: attrs["arch"], + Action: "remove", + }) + } + } + case xml.EndElement: + if t.Name.Local == "to-remove" { + inToRemove-- + } + } + } + return results +} + +func filterPackages(allPkgs, rmPkgs []packageInfo) []packageInfo { + rmSet := make(map[string]bool, len(rmPkgs)) + for _, p := range rmPkgs { + rmSet[p.String()] = true + } + var result []packageInfo + for _, p := range allPkgs { + if !rmSet[p.String()] { + result = append(result, p) + } + } + sort.Slice(result, func(i, j int) bool { + return result[i].String() < result[j].String() + }) + return result +} + +// shared handler logic + +type transactionInfo struct { + installs []packageInfo + removes []packageInfo + downloadSize float64 + diffBytes float64 + numPkgs int + nothingToDo bool +} + +func dryRunAndParse(extraArgs []string) (*transactionInfo, error) { + xmlOutput, ret := zypperDryRun(extraArgs) + debugf("%s", xmlOutput) + + if strings.Contains(xmlOutput, "Nothing to do") { + return &transactionInfo{nothingToDo: true}, nil + } + + downloadSize, diffBytes, numPkgs, found := parseInstallSummary(xmlOutput) + + if ret != 0 { + if !found || numPkgs == 0 { + msgs := findMessages(xmlOutput) + if len(msgs) > 0 { + return nil, fmt.Errorf("zypper error:\n%s", strings.Join(msgs, "\n")) + } + return nil, fmt.Errorf("zypper dry-run failed with exit code %d", ret) + } + } + + if !found || numPkgs == 0 { + return &transactionInfo{nothingToDo: true}, nil + } + + installs := parseAllSolvables(xmlOutput) + removes := parseToRemove(xmlOutput) + filtered := filterPackages(installs, removes) + + return &transactionInfo{ + installs: filtered, + removes: removes, + downloadSize: downloadSize, + diffBytes: diffBytes, + numPkgs: numPkgs, + }, nil +} + +func showTransactionAndConfirm(info *transactionInfo) bool { + if info.nothingToDo { + infof("%s", colorText(colorInfo, "Nothing to do. Exiting...")) + return false + } + + printTransactionSummary(info.installs, info.removes, info.downloadSize, info.diffBytes, info.numPkgs) + + fmt.Println() + if cfg.noConfirm { + return true + } + return queryYesNo("Do you want to continue?", "yes") +} + +func pkgNames(pkgs []packageInfo) []string { + names := make([]string, len(pkgs)) + for i, p := range pkgs { + names[i] = p.String() + } + return names +} + +// worker pool + +type job struct { + item string + itemCounter int + totalItems int + workerIdx int + size float64 +} + +func makeLogMessages(item string, counter, total int) map[string]string { + m := make(map[string]string) + forceStr := "" + if cfg.force { + forceStr = "force " + } + switch cfg.command { + case "refresh", "ref": + m["error"] = fmt.Sprintf("Error %srefreshing repo [%d/%d] %q", forceStr, counter, total, item) + m["exception"] = fmt.Sprintf("SIGINT while %srefreshing repo [%d/%d] %q", forceStr, counter, total, item) + default: + m["error"] = fmt.Sprintf("Error downloading package [%d/%d] %q", counter, total, item) + m["exception"] = fmt.Sprintf("SIGINT while downloading package [%d/%d] %q", counter, total, item) + } + return m +} + +func refreshArgs() []string { + if cfg.force { + return []string{"refresh", "--force"} + } + return []string{"refresh"} +} + +func worker(ctx context.Context, wg *sync.WaitGroup, uuidPool chan string, tmpDir string, jobsChan chan job) { + defer wg.Done() + for j := range jobsChan { + select { + case <-ctx.Done(): + return + default: + } + + uuid := <-uuidPool + msgs := makeLogMessages(j.item, j.itemCounter, j.totalItems) + + if prog != nil { + prog.increment() + } + downloadLine(j.itemCounter, j.item, j.size) + + rootfs := filepath.Join(tmpDir, uuid, "rootfs") + var zypperArgs []string + if cfg.command == "refresh" || cfg.command == "ref" { + zypperArgs = []string{"--non-interactive"} + zypperArgs = append(zypperArgs, refreshArgs()...) + zypperArgs = append(zypperArgs, j.item) + } else { + zypperArgs = []string{"--non-interactive", "download", j.item} + } + + var stdout, stderr string + var exitCode int + var err error + + for attempt := 1; attempt <= maxRetries; attempt++ { + stdout, stderr, exitCode, err = runZypper(ctx, rootfs, zypperArgs...) + + if ctx.Err() != nil { + debugf("%s", msgs["exception"]) + uuidPool <- uuid + return + } + + if err == nil && exitCode == 0 { + break + } + + if attempt < maxRetries { + warningf("Attempt %d failed for %q. Retrying...", attempt, j.item) + time.Sleep(1 * time.Second) + } else { + errorf("%s", colorText(colorError, fmt.Sprintf("%s. zypper exit code: %d", msgs["error"], exitCode))) + if stderr != "" { + debugf("[stderr]\n%s", stderr) + } + if stdout != "" { + debugf("[stdout]\n%s", stdout) + } + } + } + + uuidPool <- uuid + } +} + +func mainTask(ctx context.Context, taskItems []string, tmpDir string, needDev bool, tracker *MountTracker) error { + numWorkers := cfg.jobs + if len(taskItems) < numWorkers { + numWorkers = len(taskItems) + } + + uuidPool := make(chan string, numWorkers) + allUUIDs := make([]string, numWorkers) + + for i := 0; i < numWorkers; i++ { + u := randomUUID() + allUUIDs[i] = u + uuidPool <- u + } + + if needDev { + for _, uuid := range allUUIDs { + if err := setupChroot(tmpDir, uuid, needDev, tracker); err != nil { + errorf("%s", colorText(colorError, fmt.Sprintf("Chroot setup failed: %v", err))) + return err + } + } + } else { + var setupWg sync.WaitGroup + setupErrs := make(chan error, numWorkers) + for _, uuid := range allUUIDs { + setupWg.Add(1) + go func(u string) { + defer setupWg.Done() + if err := setupChroot(tmpDir, u, needDev, tracker); err != nil { + setupErrs <- err + } + }(uuid) + } + setupWg.Wait() + close(setupErrs) + if err := <-setupErrs; err != nil { + errorf("%s", colorText(colorError, fmt.Sprintf("Chroot setup failed: %v", err))) + return err + } + } + + totalItems := len(taskItems) + + totalBytes := float64(0) + if cfg.txInfo != nil { + for _, p := range cfg.txInfo { + totalBytes += p.Size + } + } + + pkgSizes := make(map[string]float64) + if cfg.txInfo != nil { + for _, p := range cfg.txInfo { + pkgSizes[p.String()] = p.Size + } + } + + prog = newProgressState(totalItems) + prog.startTicker() + defer func() { + prog.finish() + prog = nil + }() + + jobsChan := make(chan job, totalItems) + + var wg sync.WaitGroup + for i := 0; i < numWorkers; i++ { + wg.Add(1) + go worker(ctx, &wg, uuidPool, tmpDir, jobsChan) + } + + itemCounter := 0 + for _, item := range taskItems { + itemCounter++ + size := pkgSizes[item] + select { + case <-ctx.Done(): + close(jobsChan) + wg.Wait() + return ctx.Err() + case jobsChan <- job{item: item, itemCounter: itemCounter, totalItems: totalItems, workerIdx: (itemCounter - 1) % numWorkers, size: size}: + } + } + + close(jobsChan) + wg.Wait() + + if totalBytes > 0 { + fetchSummary(totalBytes, time.Since(prog.startTime)) + } + + return nil +} + +// prompt + +func queryYesNo(question, defaultVal string) bool { + valid := map[string]bool{"yes": true, "y": true, "ye": true, "no": false, "n": false} + var prompt string + switch defaultVal { + case "": + prompt = " [y/n]: " + case "yes": + prompt = " [Y/n]: " + case "no": + prompt = " [y/N]: " + default: + prompt = " [y/n]: " + } + reader := bufio.NewReader(os.Stdin) + for { + fmt.Print(colorText(colorInput, question+prompt)) + choice, err := reader.ReadString('\n') + if err != nil { + fmt.Println() + return false + } + choice = strings.ToLower(strings.TrimSpace(choice)) + if defaultVal != "" && choice == "" { + return valid[defaultVal] + } + if v, ok := valid[choice]; ok { + return v + } + fmt.Print(colorText(colorWarning, "Please respond with 'yes' or 'no' (or 'y' or 'n').\n")) + } +} + +// zypp lock + +func getZyppLock() int { + ourPid := os.Getpid() + os.MkdirAll(filepath.Dir(zypperPidFile), 0755) + os.WriteFile(zypperPidFile, []byte(fmt.Sprintf("%d", ourPid)), 0644) + return ourPid +} + +func releaseZyppLock() bool { + if os.Getuid() == 0 { + if err := os.WriteFile(zypperPidFile, []byte{}, 0644); err != nil { + debugf("Warning: failed to clear zypp lock file: %v", err) + } + return true + } + return false +} + +func checkZypperRunning() (int, string) { + data, err := os.ReadFile(zypperPidFile) + if err != nil { + return 0, "" + } + pidStr := strings.TrimSpace(string(data)) + if pidStr == "" { + return 0, "" + } + var pid int + fmt.Sscanf(pidStr, "%d", &pid) + if pid == 0 { + return 0, "" + } + + commPath := fmt.Sprintf("/proc/%d/comm", pid) + commData, err := os.ReadFile(commPath) + if err != nil { + return 0, "" + } + program := strings.TrimSpace(string(commData)) + if program == "" { + return 0, "" + } + return pid, program +} + +// command handlers + +func handleRefresh(ctx context.Context, tmpDir string) error { + tracker := &MountTracker{} + defer vlcroCleanup(tmpDir, tracker) + + statusMsg("Reading package lists") + xmlOutput, _ := zypperDryRun([]string{"repos"}) + statusMsg("Enumerating enabled repos") + + getZyppLock() + + repos := findElements(xmlOutput, "repo") + var aliases []string + for _, r := range repos { + if r["enabled"] == "1" { + aliases = append(aliases, r["alias"]) + } + } + debugf("Enabled repos: %v", aliases) + + if len(aliases) == 0 { + infof("%s", colorText(colorInfo, "No repos found. Exiting...")) + return nil + } + + return mainTask(ctx, aliases, tmpDir, true, tracker) +} + +func handleDistUpgrade(ctx context.Context, tmpDir string) error { + tracker := &MountTracker{} + defer vlcroCleanup(tmpDir, tracker) + + statusMsg("Reading package lists") + statusMsg("Building dependency tree") + info, err := dryRunAndParse([]string{"dist-upgrade", "--dry-run"}) + if err != nil { + errorf("%s", colorText(colorError, fmt.Sprintf("%v\nThere are package conflicts that must be manually resolved. See output of:\nzypper --non-interactive --no-cd dist-upgrade --dry-run", err))) + return err + } + + if info.nothingToDo { + infof("%s", colorText(colorInfo, "Nothing to do. Exiting...")) + return nil + } + + cfg.txInfo = info.installs + + if !showTransactionAndConfirm(info) { + return nil + } + + getZyppLock() + + if info.downloadSize > 0 { + statusMsg("Downloading packages") + err := mainTask(ctx, pkgNames(info.installs), tmpDir, false, tracker) + if err == context.Canceled { + return err + } + if err != nil { + warningf("%s", colorText(colorWarning, fmt.Sprintf("Parallel execution failed (%v). Falling back to standard zypper...", err))) + } + } + + vlcroCleanup(tmpDir, tracker) + + if !cfg.downloadOnly { + infof("%s", colorText(colorInfo, "Vlcro has finished its tasks. Handing you over to zypper...")) + nonInteractive := "" + if cfg.noConfirm { + nonInteractive = "--non-interactive" + } + code := handover(fmt.Sprintf("env ZYPP_CURL2=1 ZYPP_PCK_PRELOAD=1 ZYPP_SINGLE_RPMTRANS=1 zypper %s --no-cd dist-upgrade", nonInteractive)) + if code != 0 { + return fmt.Errorf("zypper dist-upgrade failed with exit code %d", code) + } + } + + return nil +} + +func handleInstall(ctx context.Context, tmpDir string) error { + if len(cfg.packages) == 0 { + errorf("%s", colorText(colorError, "No packages specified for installation")) + return fmt.Errorf("no packages specified") + } + + tracker := &MountTracker{} + defer vlcroCleanup(tmpDir, tracker) + + statusMsg("Reading package lists") + statusMsg("Building dependency tree") + dryRunArgs := []string{"install", "--dry-run"} + dryRunArgs = append(dryRunArgs, cfg.packages...) + info, err := dryRunAndParse(dryRunArgs) + if err != nil { + errorf("%s", colorText(colorError, fmt.Sprintf("Error: %v", err))) + return err + } + + if info.nothingToDo { + infof("%s", colorText(colorInfo, "Nothing to do. Exiting...")) + return nil + } + + cfg.txInfo = info.installs + + if !showTransactionAndConfirm(info) { + return nil + } + + getZyppLock() + + if info.downloadSize > 0 { + statusMsg("Downloading packages") + err := mainTask(ctx, pkgNames(info.installs), tmpDir, false, tracker) + if err == context.Canceled { + return err + } + if err != nil { + warningf("%s", colorText(colorWarning, fmt.Sprintf("Parallel execution failed (%v). Falling back to standard zypper...", err))) + } + } + + vlcroCleanup(tmpDir, tracker) + + if !cfg.downloadOnly { + infof("%s", colorText(colorInfo, "Vlcro has finished its tasks. Handing you over to zypper...")) + nonInteractive := "" + if cfg.noConfirm { + nonInteractive = "--non-interactive" + } + code := handover(fmt.Sprintf("env ZYPP_CURL2=1 ZYPP_PCK_PRELOAD=1 ZYPP_SINGLE_RPMTRANS=1 zypper %s --no-cd install %s", nonInteractive, strings.Join(cfg.packages, " "))) + if code != 0 { + return fmt.Errorf("zypper install failed with exit code %d", code) + } + } + + return nil +} + +func handleINR(ctx context.Context, tmpDir string) error { + tracker := &MountTracker{} + defer vlcroCleanup(tmpDir, tracker) + + statusMsg("Reading package lists") + statusMsg("Building dependency tree") + info, err := dryRunAndParse([]string{"install-new-recommends", "--dry-run"}) + if err != nil { + errorf("%s", colorText(colorError, fmt.Sprintf("Error: %v", err))) + return err + } + + if info.nothingToDo { + infof("%s", colorText(colorInfo, "Nothing to do. Exiting...")) + return nil + } + + cfg.txInfo = info.installs + + if !showTransactionAndConfirm(info) { + return nil + } + + getZyppLock() + + if info.downloadSize > 0 { + statusMsg("Downloading packages") + err := mainTask(ctx, pkgNames(info.installs), tmpDir, false, tracker) + if err == context.Canceled { + return err + } + if err != nil { + warningf("%s", colorText(colorWarning, fmt.Sprintf("Parallel execution failed (%v). Falling back to standard zypper...", err))) + } + } + + vlcroCleanup(tmpDir, tracker) + + if !cfg.downloadOnly { + infof("%s", colorText(colorInfo, "Vlcro has finished its tasks. Handing you over to zypper...")) + nonInteractive := "" + if cfg.noConfirm { + nonInteractive = "--non-interactive" + } + code := handover(fmt.Sprintf("env ZYPP_CURL2=1 ZYPP_PCK_PRELOAD=1 ZYPP_SINGLE_RPMTRANS=1 zypper %s --no-cd install-new-recommends", nonInteractive)) + if code != 0 { + return fmt.Errorf("zypper install-new-recommends failed with exit code %d", code) + } + } + + return nil +}