small pixel drawing of a pufferfish gore

in the beginning, there was goreness
Jes Olson j3s@c3f.net
Sun, 08 Dec 2024 16:21:11 -0500
commit

7efda8a1e45d498aa321748c4cf56c67d63a2b20

2 files changed, 102 insertions(+), 0 deletions(-)

jump to
A go.mod

@@ -0,0 +1,3 @@

+module j3s.sh/gore + +go 1.23.4
A main.go

@@ -0,0 +1,99 @@

+package main + +import ( + "fmt" + "log" + "net/http" + "os" + "os/exec" + "path/filepath" + "sync" +) + +var mu sync.Mutex + +func main() { + http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { + fmt.Fprintln(w, "Welcome to Gore: Submit a Go module for execution!") + fmt.Fprintln(w, "Use /submit?module=<module-url> to submit a Go module.") + }) + http.HandleFunc("/submit", handleModuleSubmission) + + log.Println("Starting Gore server on :8080...") + log.Fatal(http.ListenAndServe(":8080", nil)) +} + +func handleModuleSubmission(w http.ResponseWriter, r *http.Request) { + module := r.URL.Query().Get("module") + if module == "" { + http.Error(w, "Module URL is required", http.StatusBadRequest) + return + } + + go func() { + if err := processModule(module); err != nil { + log.Printf("Error processing module %s: %v", module, err) + } + }() + + fmt.Fprintf(w, "Module %s submitted for processing.\n", module) +} + +func processModule(module string) error { + mu.Lock() + defer mu.Unlock() + + log.Printf("Processing module: %s", module) + + // Create a temporary directory for the module + tempDir, err := os.MkdirTemp("", "gore-*") + if err != nil { + return fmt.Errorf("failed to create temp dir: %v", err) + } + defer os.RemoveAll(tempDir) + + // `go get` the module + cmd := exec.Command("go", "mod", "init", "gore-temp") + cmd.Dir = tempDir + if err := cmd.Run(); err != nil { + return fmt.Errorf("failed to initialize module: %v", err) + } + + cmd = exec.Command("go", "get", module) + cmd.Dir = tempDir + if err := cmd.Run(); err != nil { + return fmt.Errorf("failed to get module: %v", err) + } + + // Build the module + outputBinary := filepath.Join(tempDir, "module-binary") + cmd = exec.Command("go", "build", "-o", outputBinary) + cmd.Dir = tempDir + if err := cmd.Run(); err != nil { + return fmt.Errorf("failed to build module: %v", err) + } + + log.Printf("Module built: %s", outputBinary) + + // Launch QEMU VM with u-root and the built binary + if err := launchQEMU(outputBinary); err != nil { + return fmt.Errorf("failed to launch QEMU: %v", err) + } + + return nil +} + +func launchQEMU(binary string) error { + // Simulate QEMU launching + log.Printf("Launching QEMU VM with binary: %s", binary) + + // Replace this with actual QEMU invocation + cmd := exec.Command("qemu-system-x86_64", "-kernel", binary, "-append", "console=ttyS0", "-nographic") + cmd.Stdout = os.Stdout + cmd.Stderr = os.Stderr + if err := cmd.Run(); err != nil { + return fmt.Errorf("failed to start QEMU: %v", err) + } + + return nil +}