chore: sync from fn-registry agent

capability_proc.go

@@ -0,0 +1,103 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const procMaxEntries = 200
+
+// runProcList enumera procesos. En linux usa /proc parsing via `ps -eo`.
+func runProcList(cap *Capability, args map[string]any) (any, int, error) {
+	_ = cap
+	_ = args
+	if runtime.GOOS == "windows" {
+		return runProcListWindows()
+	}
+	return runProcListUnix()
+}
+
+func runProcListUnix() (any, int, error) {
+	if _, err := exec.LookPath("ps"); err != nil {
+		return nil, -1, fmt.Errorf("ps binary not found")
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	// ps -eo pid,ppid,user,comm,rss,pcpu --no-headers
+	c := exec.CommandContext(ctx, "ps", "-eo", "pid,ppid,user,comm,rss,pcpu", "--no-headers")
+	out, err := c.Output()
+	if err != nil {
+		return nil, -1, fmt.Errorf("ps: %w", err)
+	}
+	lines := strings.Split(string(out), "\n")
+	processes := []map[string]any{}
+	for _, line := range lines {
+		fields := strings.Fields(line)
+		if len(fields) < 6 {
+			continue
+		}
+		pid, _ := strconv.Atoi(fields[0])
+		ppid, _ := strconv.Atoi(fields[1])
+		user := fields[2]
+		name := fields[3]
+		rss, _ := strconv.ParseInt(fields[4], 10, 64)
+		cpu, _ := strconv.ParseFloat(fields[5], 64)
+		processes = append(processes, map[string]any{
+			"pid":     pid,
+			"ppid":    ppid,
+			"user":    user,
+			"name":    name,
+			"rss_kb":  rss,
+			"cpu_pct": cpu,
+		})
+		if len(processes) >= procMaxEntries {
+			break
+		}
+	}
+	return map[string]any{
+		"processes": processes,
+		"count":     len(processes),
+		"truncated": len(processes) >= procMaxEntries,
+	}, 0, nil
+}
+
+func runProcListWindows() (any, int, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	c := exec.CommandContext(ctx, "tasklist", "/FO", "CSV", "/NH")
+	out, err := c.Output()
+	if err != nil {
+		return nil, -1, fmt.Errorf("tasklist: %w", err)
+	}
+	lines := strings.Split(string(out), "\n")
+	processes := []map[string]any{}
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		parts := strings.Split(line, ",")
+		if len(parts) < 5 {
+			continue
+		}
+		name := strings.Trim(parts[0], `"`)
+		pid, _ := strconv.Atoi(strings.Trim(parts[1], `"`))
+		processes = append(processes, map[string]any{
+			"pid":  pid,
+			"name": name,
+		})
+		if len(processes) >= procMaxEntries {
+			break
+		}
+	}
+	return map[string]any{
+		"processes": processes,
+		"count":     len(processes),
+		"truncated": len(processes) >= procMaxEntries,
+	}, 0, nil
+}