Files
HomeAgent/internal/plugins/files/plugin.go
root 7f28b997e6 feat: output channel redesign - per-channel output gates, LLM chain events, SDKConfig
- Output channels generate per-channel tools: output_send__{name} (type=output) + output_send__{name}_help
- content is JSON string transparently passed to plugin handler for routing
- EventAgentLLMChain: full LLM response forwarded after each turn for webui/logs
- sdk.New refactored to SDKConfig struct (no more 13 positional args)
- RegisterOutputChannel adds desc param for JSON format documentation
- channelDevice simplified (no Tools method), desc field added
- Child agent permission updated for output_send__ prefix
- System prompt: output gates, multi-call, long messages split
- WebUI: subscribes to EventAgentLLMChain in SSE, no output channel
- Tests updated for new naming convention
2026-07-16 12:11:16 +08:00

486 lines
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package files
import (
"fmt"
"log"
"os"
"path/filepath"
"sort"
"strings"
"sync"
"gitcode.com/JianFeeeee/HomeAgent/internal/plugin"
sdk "gitcode.com/JianFeeeee/HomeAgent/internal/sdk"
)
func init() {
plugin.RegisterPluginMeta("files", "文件系统", "Files")
plugin.RegisterFactory("files", func(name string, config map[string]interface{}) (sdk.Plugin, error) {
return New(name), nil
})
}
type Plugin struct {
name string
sdk *sdk.PluginSDK
mu sync.RWMutex
filesDir string
}
func New(name string) *Plugin {
return &Plugin{name: name}
}
func (p *Plugin) Name() string { return p.name }
func (p *Plugin) Start(s *sdk.PluginSDK) error {
s.SetAutoRestart(true)
p.sdk = s
s.Settings().RegisterDef(sdk.ConfigDef{
Key: "dir",
Default: "/",
Type: "string",
DisplayName: "文件系统根目录",
Description: "文件操作允许访问的根目录(设为 / 表示完整主机文件系统)",
Category: "files",
})
dir := getSetting[string](s.Settings(), "dir", "/")
if strings.HasPrefix(dir, "~/") {
home, _ := os.UserHomeDir()
dir = filepath.Join(home, dir[2:])
}
abs, err := filepath.Abs(dir)
if err != nil {
return fmt.Errorf("resolve files.dir: %w", err)
}
p.filesDir = abs
tp := p.name + "_"
s.RegisterTool(tp+"read", sdk.ToolDef{
Name: tp + "read",
Description: fmt.Sprintf("读取文件内容。支持 offset/limit 分段读取大文件。沙箱路径: %s", p.filesDir),
Parameters: map[string]interface{}{
"type": "object",
"properties": map[string]interface{}{
"path": map[string]interface{}{"type": "string", "description": "文件路径(绝对路径或相对于沙箱的路径)"},
"offset": map[string]interface{}{"type": "integer", "description": "起始行号从1开始可选默认1"},
"limit": map[string]interface{}{"type": "integer", "description": "最多返回的行数(可选,默认全部)"},
},
"required": []string{"path"},
},
}, p.handleRead)
s.RegisterTool(tp+"write", sdk.ToolDef{
Name: tp + "write",
Description: fmt.Sprintf("写入文件。自动创建父目录。沙箱路径: %s", p.filesDir),
Parameters: map[string]interface{}{
"type": "object",
"properties": map[string]interface{}{
"path": map[string]interface{}{"type": "string", "description": "文件路径"},
"content": map[string]interface{}{"type": "string", "description": "要写入的内容"},
"mode": map[string]interface{}{"type": "string", "description": "写入模式: overwrite覆盖默认| append追加到末尾| insert插入到指定行| create创建新文件已存在则报错"},
"line": map[string]interface{}{"type": "integer", "description": "插入模式时的目标行号从1开始内容将插入到该行之前"},
},
"required": []string{"path", "content"},
},
}, p.handleWrite)
s.RegisterTool(tp+"edit", sdk.ToolDef{
Name: tp + "edit",
Description: fmt.Sprintf("对文件执行精确字符串替换。每个 old 必须在原文中唯一匹配。沙箱路径: %s", p.filesDir),
Parameters: map[string]interface{}{
"type": "object",
"properties": map[string]interface{}{
"path": map[string]interface{}{"type": "string", "description": "文件路径"},
"edits": map[string]interface{}{
"type": "array",
"description": "一个或多个替换操作。每个 old 必须在原文中恰好出现一次。不要包含重叠的 edit。",
"items": map[string]interface{}{
"type": "object",
"properties": map[string]interface{}{
"old": map[string]interface{}{"type": "string", "description": "要查找的原文(必须在文件中唯一)"},
"new": map[string]interface{}{"type": "string", "description": "替换后的文本"},
},
"required": []string{"old", "new"},
},
},
},
"required": []string{"path", "edits"},
},
}, p.handleEdit)
s.RegisterTool(tp+"ls", sdk.ToolDef{
Name: tp + "ls",
Description: fmt.Sprintf("列出目录内容。目录以 / 后缀标记。沙箱路径: %s", p.filesDir),
Parameters: map[string]interface{}{
"type": "object",
"properties": map[string]interface{}{
"path": map[string]interface{}{"type": "string", "description": "目录路径(可选,默认为沙箱根目录)"},
"limit": map[string]interface{}{"type": "integer", "description": "最多返回条目数可选默认500"},
},
},
}, p.handleLs)
log.Printf("[%s] started, sandbox: %s", p.name, p.filesDir)
return nil
}
func (p *Plugin) Stop() error {
log.Printf("[%s] stopped", p.name)
return nil
}
func (p *Plugin) resolvePath(userPath string) (string, error) {
if userPath == "" {
userPath = "."
}
if !filepath.IsAbs(userPath) {
userPath = filepath.Join(p.filesDir, userPath)
}
abs, err := filepath.Abs(userPath)
if err != nil {
return "", fmt.Errorf("resolve path: %w", err)
}
base := filepath.Clean(p.filesDir)
if base != "/" && !strings.HasPrefix(abs, base+string(filepath.Separator)) && abs != base {
return "", fmt.Errorf("path outside sandbox: %s", userPath)
}
return abs, nil
}
func (p *Plugin) handleRead(args map[string]interface{}) (interface{}, error) {
path, _ := args["path"].(string)
if path == "" {
return errorResult("path is required"), nil
}
absPath, err := p.resolvePath(path)
if err != nil {
return errorResult(err.Error()), nil
}
info, err := os.Stat(absPath)
if err != nil {
if os.IsNotExist(err) {
return errorResult("file not found: " + path), nil
}
return errorResult("stat error: " + err.Error()), nil
}
if info.IsDir() {
return errorResult("is a directory, use ls instead: " + path), nil
}
data, err := os.ReadFile(absPath)
if err != nil {
return errorResult("read error: " + err.Error()), nil
}
text := string(data)
lines := strings.Split(text, "\n")
totalLines := len(lines)
offset := 0
if v, ok := args["offset"].(float64); ok && v > 0 {
offset = int(v) - 1
}
if offset >= totalLines {
return errorResult(fmt.Sprintf("offset %d exceeds file length (%d lines)", offset+1, totalLines)), nil
}
limit := totalLines - offset
if v, ok := args["limit"].(float64); ok && v > 0 {
if int(v) < limit {
limit = int(v)
}
}
end := offset + limit
if end > totalLines {
end = totalLines
}
selected := lines[offset:end]
output := strings.Join(selected, "\n")
var sb strings.Builder
sb.WriteString(output)
if end < totalLines {
nextOffset := end + 1
sb.WriteString(fmt.Sprintf("\n\n[Showing lines %d-%d of %d. Use offset=%d to continue.]", offset+1, end, totalLines, nextOffset))
} else if offset > 0 {
sb.WriteString(fmt.Sprintf("\n\n[%d lines total]", totalLines))
}
return map[string]interface{}{
"content": sb.String(),
"size": len(data),
"lines": totalLines,
}, nil
}
func (p *Plugin) handleWrite(args map[string]interface{}) (interface{}, error) {
path, _ := args["path"].(string)
if path == "" {
return errorResult("path is required"), nil
}
content, _ := args["content"].(string)
mode, _ := args["mode"].(string)
if mode == "" {
mode = "overwrite"
}
line := 0
if v, ok := args["line"].(float64); ok && v > 0 {
line = int(v)
}
absPath, err := p.resolvePath(path)
if err != nil {
return errorResult(err.Error()), nil
}
switch mode {
case "create":
if _, err := os.Stat(absPath); err == nil {
return errorResult("file already exists: " + path), nil
}
dir := filepath.Dir(absPath)
if err := os.MkdirAll(dir, 0755); err != nil {
return errorResult("mkdir error: " + err.Error()), nil
}
if err := os.WriteFile(absPath, []byte(content), 0644); err != nil {
return errorResult("write error: " + err.Error()), nil
}
return map[string]interface{}{
"content": fmt.Sprintf("Created %s (%d bytes)", path, len(content)),
}, nil
case "append":
dir := filepath.Dir(absPath)
if err := os.MkdirAll(dir, 0755); err != nil {
return errorResult("mkdir error: " + err.Error()), nil
}
f, err := os.OpenFile(absPath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
return errorResult("open error: " + err.Error()), nil
}
defer f.Close()
if _, err := f.WriteString(content); err != nil {
return errorResult("append error: " + err.Error()), nil
}
return map[string]interface{}{
"content": fmt.Sprintf("Appended %d bytes to %s", len(content), path),
}, nil
case "insert":
if line < 1 {
return errorResult("line must be >= 1 for insert mode"), nil
}
data, err := os.ReadFile(absPath)
if err != nil {
if os.IsNotExist(err) {
return errorResult("file not found: " + path), nil
}
return errorResult("read error: " + err.Error()), nil
}
lines := strings.Split(string(data), "\n")
if line > len(lines)+1 {
return errorResult(fmt.Sprintf("line %d exceeds file length (%d lines)", line, len(lines))), nil
}
idx := line - 1
newLines := make([]string, 0, len(lines)+1)
newLines = append(newLines, lines[:idx]...)
newLines = append(newLines, content)
newLines = append(newLines, lines[idx:]...)
result := strings.Join(newLines, "\n")
if err := os.WriteFile(absPath, []byte(result), 0644); err != nil {
return errorResult("write error: " + err.Error()), nil
}
return map[string]interface{}{
"content": fmt.Sprintf("Inserted %d bytes at line %d in %s", len(content), line, path),
}, nil
default: // overwrite
dir := filepath.Dir(absPath)
if err := os.MkdirAll(dir, 0755); err != nil {
return errorResult("mkdir error: " + err.Error()), nil
}
if err := os.WriteFile(absPath, []byte(content), 0644); err != nil {
return errorResult("write error: " + err.Error()), nil
}
return map[string]interface{}{
"content": fmt.Sprintf("Wrote %d bytes to %s", len(content), path),
}, nil
}
}
func (p *Plugin) handleEdit(args map[string]interface{}) (interface{}, error) {
path, _ := args["path"].(string)
if path == "" {
return errorResult("path is required"), nil
}
absPath, err := p.resolvePath(path)
if err != nil {
return errorResult(err.Error()), nil
}
rawEdits, ok := args["edits"].([]interface{})
if !ok || len(rawEdits) == 0 {
return errorResult("edits must be a non-empty array"), nil
}
data, err := os.ReadFile(absPath)
if err != nil {
if os.IsNotExist(err) {
return errorResult("file not found: " + path), nil
}
return errorResult("read error: " + err.Error()), nil
}
original := string(data)
content := original
applied := 0
var errors []string
for i, raw := range rawEdits {
edit, ok := raw.(map[string]interface{})
if !ok {
errors = append(errors, fmt.Sprintf("edit[%d]: invalid format", i))
continue
}
oldText, _ := edit["old"].(string)
newText, _ := edit["new"].(string)
if oldText == "" {
errors = append(errors, fmt.Sprintf("edit[%d]: old is required", i))
continue
}
count := strings.Count(content, oldText)
if count == 0 {
errors = append(errors, fmt.Sprintf("edit[%d]: could not find %q in %s", i, oldText, path))
continue
}
if count > 1 {
errors = append(errors, fmt.Sprintf("edit[%d]: found %d occurrences of %q, must be unique", i, count, oldText))
continue
}
content = strings.Replace(content, oldText, newText, 1)
applied++
}
if applied == 0 {
msg := "no edits applied"
if len(errors) > 0 {
msg += ": " + strings.Join(errors, "; ")
}
return errorResult(msg), nil
}
if err := os.WriteFile(absPath, []byte(content), 0644); err != nil {
return errorResult("write error: " + err.Error()), nil
}
msg := fmt.Sprintf("Successfully applied %d/%d edits to %s", applied, len(rawEdits), path)
if len(errors) > 0 {
msg += "\nWarnings:\n" + strings.Join(errors, "\n")
}
return map[string]interface{}{
"content": msg,
}, nil
}
func (p *Plugin) handleLs(args map[string]interface{}) (interface{}, error) {
path, _ := args["path"].(string)
if path == "" {
path = "."
}
absPath, err := p.resolvePath(path)
if err != nil {
return errorResult(err.Error()), nil
}
info, err := os.Stat(absPath)
if err != nil {
if os.IsNotExist(err) {
return errorResult("path not found: " + path), nil
}
return errorResult("stat error: " + err.Error()), nil
}
if !info.IsDir() {
return errorResult("not a directory: " + path), nil
}
entries, err := os.ReadDir(absPath)
if err != nil {
return errorResult("readdir error: " + err.Error()), nil
}
limit := 500
if v, ok := args["limit"].(float64); ok && v > 0 {
limit = int(v)
}
sort.Slice(entries, func(i, j int) bool {
return strings.ToLower(entries[i].Name()) < strings.ToLower(entries[j].Name())
})
var lines []string
entryLimitReached := false
for i, entry := range entries {
if i >= limit {
entryLimitReached = true
break
}
name := entry.Name()
if entry.IsDir() {
name += "/"
}
info, err := entry.Info()
if err == nil {
name = fmt.Sprintf("%-40s %8d", name, info.Size())
}
lines = append(lines, name)
}
if len(lines) == 0 {
return map[string]interface{}{
"content": "(empty directory)",
}, nil
}
output := strings.Join(lines, "\n")
if entryLimitReached {
output += fmt.Sprintf("\n\n[%d entries limit reached. Use limit=N for more.]", limit)
}
return map[string]interface{}{
"content": output,
}, nil
}
func errorResult(msg string) map[string]interface{} {
return map[string]interface{}{
"isError": true,
"content": msg,
}
}
func getSetting[T any](s sdk.SettingsAPI, key string, def T) T {
v, err := s.Get(key)
if err != nil || v == nil {
return def
}
val, ok := v.(T)
if !ok {
return def
}
return val
}