app.go

@@ -6,6 +6,7 @@ import (
 	"goexplore/internal/config"
 	"goexplore/internal/explorer"
 	"goexplore/internal/keychain"
+	"goexplore/internal/protocols/ftp"
 	"goexplore/internal/protocols/local"
 	"goexplore/internal/protocols/nfs"
 	"goexplore/internal/protocols/s3"
@@ -123,6 +124,8 @@ func (a *App) getExplorerForConnection(id string) (explorer.Explorer, error) {
 		return webdav.New(conn, secret), nil
 	case "nfs":
 		return nfs.New(conn, secret)
+	case "ftp":
+		return ftp.New(conn, secret), nil
 	default:
 		return nil, fmt.Errorf("protocol %s not fully implemented", conn.Protocol)
 	}

frontend/index.html

@@ -83,6 +83,7 @@
                     <select id="conn-protocol" onchange="updateProtocolFields()">
                         <option value="s3">S3 / S3-Compatible</option>
                         <option value="sftp">SFTP</option>
+                        <option value="ftp">FTP</option>
                         <option value="webdav">WebDAV</option>
                         <option value="smb">SMB</option>
                         <option value="nfs">NFS</option>
@@ -117,6 +118,11 @@
                     </div>
                 </div>
 
+                <div class="form-group" id="ftp-secure-group" style="display: none; align-items: center; gap: 0.5rem; flex-direction: row; margin-bottom: 1rem;">
+                    <input type="checkbox" id="conn-secure" style="width: auto;">
+                    <label style="margin: 0;">Use FTPS (Secure Explicit TLS)</label>
+                </div>
+
                 <div class="form-row">
                     <div class="form-group" style="flex: 1;">
                         <label>Username / Access Key</label>

frontend/src/main.js

@@ -46,6 +46,7 @@ async function init() {
             bucket: document.getElementById('conn-bucket').value,
             region: document.getElementById('conn-region').value,
             path_style: document.getElementById('conn-pathstyle').checked,
+            secure: document.getElementById('conn-secure').checked,
             username: document.getElementById('conn-username').value
         };
         let secret = document.getElementById('conn-secret').value;
@@ -105,6 +106,7 @@ window.editConnection = (id) => {
     document.getElementById('conn-bucket').value = c.bucket || '';
     document.getElementById('conn-region').value = c.region || '';
     document.getElementById('conn-pathstyle').checked = c.path_style || false;
+    document.getElementById('conn-secure').checked = c.secure || false;
     document.getElementById('conn-username').value = c.username || '';
     document.getElementById('conn-secret').value = '';
     document.getElementById('conn-secret-key').value = '';
@@ -119,6 +121,7 @@ window.openConnModal = () => {
     document.getElementById('modal-title').innerText = "Add Connection";
     document.getElementById('conn-form').reset();
     document.getElementById('conn-id').value = uuidv4();
+    document.getElementById('conn-secure').checked = false;
     document.getElementById('conn-secret').value = '';
     document.getElementById('conn-secret-key').value = '';
     document.getElementById('conn-sftp-auth-type').value = 'password';
@@ -142,6 +145,10 @@ window.updateProtocolFields = () => {
     document.getElementById('region-group').style.display = showS3Specific ? 'flex' : 'none';
     document.getElementById('pathstyle-group').style.display = showS3Specific ? 'flex' : 'none';
 
+    // FTP specific fields
+    const showFTP = protocol === 'ftp';
+    document.getElementById('ftp-secure-group').style.display = showFTP ? 'flex' : 'none';
+
     // SFTP Auth Type toggle
     const authTypeSelect = document.getElementById('conn-sftp-auth-type');
     const secretInput = document.getElementById('conn-secret');

go.mod

@@ -41,6 +41,7 @@ require (
 	github.com/godbus/dbus/v5 v5.2.2 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e // indirect
+	github.com/jlaffaye/ftp v0.2.1 // indirect
 	github.com/kr/fs v0.1.0 // indirect
 	github.com/labstack/echo/v4 v4.13.3 // indirect
 	github.com/labstack/gommon v0.4.2 // indirect

go.sum

@@ -56,6 +56,8 @@ github.com/hirochachacha/go-smb2 v1.1.0 h1:b6hs9qKIql9eVXAiN0M2wSFY5xnhbHAQoCwRK
 github.com/hirochachacha/go-smb2 v1.1.0/go.mod h1:8F1A4d5EZzrGu5R7PU163UcMRDJQl4FtcxjBfsY8TZE=
 github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e h1:Q3+PugElBCf4PFpxhErSzU3/PY5sFL5Z6rfv4AbGAck=
 github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e/go.mod h1:alcuEEnZsY1WQsagKhZDsoPCRoOijYqhZvPwLG0kzVs=
+github.com/jlaffaye/ftp v0.2.1 h1:AICcTYPMkaXlmjLMm9I+lB36f6jXCsCvBqVQc6EfC1Y=
+github.com/jlaffaye/ftp v0.2.1/go.mod h1:gXSIr1pA9NhynDNigiFHs4+yL7o7I6bGF9Za9wi9tcE=
 github.com/kr/fs v0.1.0 h1:Jskdu9ieNAYnjxsi0LbQp1ulIKZV1LAFgK1tWhpZgl8=
 github.com/kr/fs v0.1.0/go.mod h1:FFnZGqtBN9Gxj7eW1uZ42v5BccTP0vu6NEaFoC2HwRg=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=

internal/config/config.go

@@ -16,6 +16,7 @@ type ConnectionConfig struct {
 	Bucket      string `yaml:"bucket,omitempty" json:"bucket,omitempty"`
 	Region      string `yaml:"region,omitempty" json:"region,omitempty"`
 	PathStyle   bool   `yaml:"path_style,omitempty" json:"path_style,omitempty"`
+	Secure      bool   `yaml:"secure,omitempty" json:"secure,omitempty"`
 	Username    string `yaml:"username,omitempty" json:"username,omitempty"`
 	KeychainKey string `yaml:"keychain_key,omitempty" json:"keychain_key,omitempty"`
 }

internal/protocols/ftp/ftp.go

@@ -0,0 +1,179 @@
+package ftp
+
+import (
+	"crypto/tls"
+	"fmt"
+	"io"
+	"path/filepath"
+	"time"
+
+	"github.com/jlaffaye/ftp"
+	"goexplore/internal/config"
+	"goexplore/internal/explorer"
+)
+
+type FTPExplorer struct {
+	cfg    *config.ConnectionConfig
+	secret string
+	client *ftp.ServerConn
+}
+
+func New(c *config.ConnectionConfig, secret string) *FTPExplorer {
+	return &FTPExplorer{cfg: c, secret: secret}
+}
+
+func (e *FTPExplorer) Connect() error {
+	port := e.cfg.Port
+	if port == 0 {
+		port = 21
+	}
+
+	addr := fmt.Sprintf("%s:%d", e.cfg.Host, port)
+	var c *ftp.ServerConn
+	var err error
+
+	if e.cfg.Secure {
+		c, err = ftp.Dial(addr, ftp.DialWithExplicitTLS(&tls.Config{
+			InsecureSkipVerify: true,
+		}))
+	} else {
+		c, err = ftp.Dial(addr)
+	}
+
+	if err != nil {
+		return err
+	}
+
+	if err := c.Login(e.cfg.Username, e.secret); err != nil {
+		c.Quit()
+		return err
+	}
+
+	e.client = c
+	return nil
+}
+
+func (e *FTPExplorer) Disconnect() error {
+	if e.client != nil {
+		return e.client.Quit()
+	}
+	return nil
+}
+
+func (e *FTPExplorer) ListDir(path string) ([]explorer.FileEntry, error) {
+	if path == "" {
+		path = "."
+	}
+
+	entries, err := e.client.List(path)
+	if err != nil {
+		return nil, err
+	}
+
+	var res []explorer.FileEntry
+	for _, f := range entries {
+		if f.Name == "." || f.Name == ".." {
+			continue
+		}
+		
+		isDir := f.Type == ftp.EntryTypeFolder
+		res = append(res, explorer.FileEntry{
+			Name:        f.Name,
+			Path:        filepath.ToSlash(filepath.Join(path, f.Name)),
+			Size:        int64(f.Size),
+			Modified:    f.Time.Format(time.RFC3339),
+			IsDir:       isDir,
+			Permissions: "",
+		})
+	}
+	return res, nil
+}
+
+func (e *FTPExplorer) Stat(path string) (explorer.FileEntry, error) {
+	if path == "" {
+		path = "."
+	}
+
+	dir := filepath.Dir(path)
+	base := filepath.Base(path)
+
+	entries, err := e.client.List(dir)
+	if err != nil {
+		return explorer.FileEntry{}, err
+	}
+
+	for _, f := range entries {
+		if f.Name == base {
+			return explorer.FileEntry{
+				Name:        f.Name,
+				Path:        filepath.ToSlash(path),
+				Size:        int64(f.Size),
+				Modified:    f.Time.Format(time.RFC3339),
+				IsDir:       f.Type == ftp.EntryTypeFolder,
+				Permissions: "",
+			}, nil
+		}
+	}
+
+	return explorer.FileEntry{}, fmt.Errorf("file not found: %s", path)
+}
+
+func (e *FTPExplorer) MkDir(path string) error {
+	return e.client.MakeDir(path)
+}
+
+func (e *FTPExplorer) removeAll(path string) error {
+	entries, err := e.client.List(path)
+	if err != nil {
+		// If it fails to list, it might be a file
+		return e.client.Delete(path)
+	}
+
+	// Try treating it as a directory to remove contents
+	isDir := false
+	for _, f := range entries {
+		if f.Name == filepath.Base(path) && f.Type == ftp.EntryTypeFolder {
+			isDir = true
+			break
+		}
+	}
+
+	if !isDir && len(entries) == 1 && entries[0].Name == filepath.Base(path) {
+		return e.client.Delete(path)
+	}
+
+	// Remove contents
+	for _, f := range entries {
+		if f.Name == "." || f.Name == ".." {
+			continue
+		}
+		subPath := filepath.ToSlash(filepath.Join(path, f.Name))
+		if f.Type == ftp.EntryTypeFolder {
+			if err := e.removeAll(subPath); err != nil {
+				return err
+			}
+		} else {
+			if err := e.client.Delete(subPath); err != nil {
+				return err
+			}
+		}
+	}
+
+	return e.client.RemoveDir(path)
+}
+
+func (e *FTPExplorer) Delete(path string) error {
+	return e.removeAll(path)
+}
+
+func (e *FTPExplorer) Rename(src, dst string) error {
+	return e.client.Rename(src, dst)
+}
+
+func (e *FTPExplorer) ReadFile(path string) (io.ReadCloser, error) {
+	return e.client.Retr(path)
+}
+
+func (e *FTPExplorer) WriteFile(path string, r io.Reader, size int64) error {
+	return e.client.Stor(path, r)
+}