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add caddy plugin

pull/144/head
Henrique Dias 2017-06-26 15:39:35 +01:00
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21
.github/ISSUE_TEMPLATE.md vendored
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@ -1,15 +1,24 @@
### Instructions (remove before submitting):
1. If you are filing a bug report, please answer the following questions.
2. If your issue is not a bug report, you do not need to use this template.
1. Are you asking for help with using Caddy or File Manager? Please use our forum instead: https://forum.caddyserver.com.
2. If you are filing a bug report, please answer the following questions.
3. If your issue is not a bug report, you do not need to use this template.
4. If not using with Caddy, ignore questions 1 and 2.
### 1. What are you trying to do?
### 1. Have you downloaded File Manager from caddyserver.com? If yes, when have you done that? If no, and you are running a custom build, which is the revision of File Manager's repository?
### 2. What is your entire Caddyfile?
```text
(Put Caddyfile here)
```
### 3. What are you trying to do?
### 2. What did you expect to see?
### 4. What did you expect to see?
### 3. What did you see instead (give full error messages and/or log)?
### 5. What did you see instead (give full error messages and/or log)?
### 4. How can someone who is starting from scratch reproduce this behaviour as minimally as possible?
### 6. How can someone who is starting from scratch reproduce this behaviour as minimally as possible?

2
.travis.yml
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@ -9,5 +9,7 @@ install:
- go get github.com/gordonklaus/ineffassign
script:
- sed -i 's/\_ \"github.com\/mholt\/caddy\/caddyhttp\"/\_ \"github.com\/mholt\/caddy\/caddyhttp\"\n\_ \"github.com\/hacdias\/filemanager\/caddy\"/g' $GOPATH/src/github.com/mholt/caddy/caddy/caddymain/run.go
- go build github.com/mholt/caddy/caddy
- go build github.com/hacdias/filemanager
- ineffassign .

4
_assets/css/styles.css
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@ -672,8 +672,8 @@ header>div div {
#listing h2 {
margin: 0 0 0 0.5em;
font-size: 1em;
color: rgba(0, 0, 0, 0.2);
font-size: .9em;
color: rgba(0, 0, 0, 0.38);
font-weight: 500;
}

164
caddy/README.md Normal file
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# filemanager - a caddy plugin
filemanager provides WebDAV features and a file managing interface within the specified directory and it can be used to upload, delete, preview, rename and edit your files within that directory. It is an implementation of [hacdias/filemanager](https://github.com/hacdias/filemanager) library.
It is extremely important for security reasons to cover the path of filemanager with some kind of authentication. You can use, for example, [`basicauth`](https://caddyserver.com/docs/basicauth) directive.
Note that if you are handling large files you might run into troubles due to the defaults of [`timeouts`](https://caddyserver.com/docs/timeouts) plugin. Check its [documentation](https://caddyserver.com/docs/timeouts) to learn more about that plugin.
## Get Started
To start using this plugin you just need to go to the [download Caddy page](https://caddyserver.com/download) and choose `filemanager` in the directives section. For further information on how Caddy works refer to [its documentation](https://caddyserver.com/docs).
If you want to build it from source, consult our [developers section](#developers).
## Syntax
```
filemanager [baseurl] {
show directory
webdav [path]
styles filepath
allow_new [true|false]
allow_edit [true|false]
allow_commands [true|false]
allow_command command
block_command command
before_save command
after_save command
allow [url|dotfiles]
allow_r regex
block [url|dotfiles]
block_r regex
}
```
All of the options above are optional.
+ **baseurl** is the URL where you will access the File Manager interface. Defaults to `/`.
+ **show** is the path, relative or absolute, to the directory you want to browse in. Defaults to `./`.
+ **webdav** is the path that will be appended to baseurl in which the [WebDAV](https://en.wikipedia.org/wiki/WebDAV) will be accessible. Defaults to `/webdav`.
+ **styles** is the relative or absolute path to the stylesheet file. This file doesn't need to be accessible from the web.
+ **allow_new** is the permission to create new files and directories. Defaults to `true`.
+ **allow_edit** is the permission to edit, rename and delete files or directories. Defaults to `true`.
+ **allow_commands** is the permission to execute commands. Defaults to `true`.
+ **allow_command** and **block_command** gives, or denies, permission to execute a certain command through the admin interface. By default `git`, `svn` and `hg` are enabled.
+ **before_save** and **after_save** allow you to set a custom command to be executed before saving and after saving a file. The placeholder `{path}` can be used and it will be replaced by the file path.
+ **allow** and **block** can be used to allow or deny the access to specific files or directories using their URL. You can use the magic word `dotfiles` to allow or block the access to dot-files. The blocked files won't show in the admin interface. By default, `block dotfiles` is activated.
+ **allow_r** and **block_r** and variations of the previous options but you are able to use regular expressions with them. These regular expressions are used to match the URL, **not** the internal file path.
So, by **default** we have:
```
filemanager / {
show ./
webdav /webdav
allow_new true
allow_edit true
allow_commands true
allow_command git
allow_command svn
allow_command hg
block dotfiles
}
```
As already mentioned, this extension should be used with [`basicauth`](https://caddyserver.com/docs/basicauth). If you do that, you will also be able to set permissions for different users using the following syntax:
```
filemanager {
# You set the global configurations here and
# all the users will inherit them.
user1:
# Here you can set specific settings for the 'user1'.
# They will override the global ones for this specific user.
}
```
## Examples
Show the directory where Caddy is being executed at the root of the domain:
```
filemanager
```
Use only WebDAV:
```
filemanager {
webdav /
}
```
Show the content of `foo` at the root of the domain:
```
filemanager {
show foo/
}
```
Show the directory where Caddy is being executed at `/filemanager`:
```
filemanager /filemanager
```
Show the content of `foo` at `/bar`:
```
filemanager /bar{
show foo/
}
```
Now, a bit more complicated example. You have three users: an administrator, a manager and an editor. The administrator can do everything and has access to the commands `rm` and `mv` because he is a geeky. The manager, doesn't have access to commands, but can create and edit files. The editor can **only** edit files. He can't even create new ones, because he will only edit the files after the manager creates them for him. Both the editor and the manager won't have access to the financial folder. We would have:
```
basicauth /admin admin pass
basicauth /admin manager pass
basicauth /admin editor pass
filemanager /admin {
show ./
allow_commands false
admin:
allow_commands true
allow_command rm
allow_command mv
allow dotfiles
manager:
block /admin/financial
editor:
allow_new false
block /admin/financial
}
```
## About Search
FileManager allows you to search through your files and it has some options. By default, your search will be something like this:
```
this are keywords
```
If you search for that it will look at every file that contains "this", "are" or "keywords" on their name. If you want to search for an exact term, you should surround your search by double quotes:
```
"this is the name"
```
That will search for any file that contains "this is the name" on its name. It won't search for each separated term this time.
By default, every search will be case sensitive. Although, you can make a case insensitive search by adding `case:insensitive` to the search terms, like this:
```
this are keywords case:insensitive
```
## Developers
If you are a developer and want to contribute, please go to the [filemanager library repository](https://github.com/hacdias/filemanager) where you can find the base code for this project.

268
caddy/filemanager.go Normal file
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// Package filemanager provides middleware for managing files in a directory
// when directory path is requested instead of a specific file. Based on browse
// middleware.
package filemanager
import (
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"os/exec"
"path/filepath"
"regexp"
"strconv"
"strings"
"github.com/hacdias/filemanager"
"github.com/mholt/caddy"
"github.com/mholt/caddy/caddyhttp/httpserver"
)
func init() {
caddy.RegisterPlugin("filemanager", caddy.Plugin{
ServerType: "http",
Action: setup,
})
}
// FileManager is an http.Handler that can show a file listing when
// directories in the given paths are specified.
type FileManager struct {
Next httpserver.Handler
Configs []*filemanager.FileManager
}
// ServeHTTP determines if the request is for this plugin, and if all prerequisites are met.
func (f FileManager) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
for i := range f.Configs {
// Checks if this Path should be handled by File Manager.
if !httpserver.Path(r.URL.Path).Matches(f.Configs[i].BaseURL) {
continue
}
return f.Configs[i].ServeHTTP(w, r)
}
return f.Next.ServeHTTP(w, r)
}
// setup configures a new FileManager middleware instance.
func setup(c *caddy.Controller) error {
configs, err := parse(c)
if err != nil {
return err
}
httpserver.GetConfig(c).AddMiddleware(func(next httpserver.Handler) httpserver.Handler {
return FileManager{Configs: configs, Next: next}
})
return nil
}
func parse(c *caddy.Controller) ([]*filemanager.FileManager, error) {
var (
configs []*filemanager.FileManager
err error
)
for c.Next() {
var (
m = filemanager.New(".")
u = m.User
name = ""
)
caddyConf := httpserver.GetConfig(c)
m.PrefixURL = strings.TrimSuffix(caddyConf.Addr.Path, "/")
m.Commands = []string{"git", "svn", "hg"}
m.Rules = append(m.Rules, &filemanager.Rule{
Regex: true,
Allow: false,
Regexp: regexp.MustCompile("\\/\\..+"),
})
// Get the baseURL
args := c.RemainingArgs()
if len(args) > 0 {
m.SetBaseURL(args[0])
m.SetWebDavURL("/webdav")
}
for c.NextBlock() {
switch c.Val() {
case "before_save":
if m.BeforeSave, err = makeCommand(c); err != nil {
return configs, err
}
case "after_save":
if m.AfterSave, err = makeCommand(c); err != nil {
return configs, err
}
case "webdav":
if !c.NextArg() {
return configs, c.ArgErr()
}
m.SetWebDavURL(c.Val())
case "show":
if !c.NextArg() {
return configs, c.ArgErr()
}
m.SetScope(c.Val(), name)
case "styles":
if !c.NextArg() {
return configs, c.ArgErr()
}
var tplBytes []byte
tplBytes, err = ioutil.ReadFile(c.Val())
if err != nil {
return configs, err
}
u.StyleSheet = string(tplBytes)
case "allow_new":
if !c.NextArg() {
return configs, c.ArgErr()
}
u.AllowNew, err = strconv.ParseBool(c.Val())
if err != nil {
return configs, err
}
case "allow_edit":
if !c.NextArg() {
return configs, c.ArgErr()
}
u.AllowEdit, err = strconv.ParseBool(c.Val())
if err != nil {
return configs, err
}
case "allow_commands":
if !c.NextArg() {
return configs, c.ArgErr()
}
u.AllowCommands, err = strconv.ParseBool(c.Val())
if err != nil {
return configs, err
}
case "allow_command":
if !c.NextArg() {
return configs, c.ArgErr()
}
u.Commands = append(u.Commands, c.Val())
case "block_command":
if !c.NextArg() {
return configs, c.ArgErr()
}
index := 0
for i, val := range u.Commands {
if val == c.Val() {
index = i
}
}
u.Commands = append(u.Commands[:index], u.Commands[index+1:]...)
case "allow", "allow_r", "block", "block_r":
ruleType := c.Val()
if !c.NextArg() {
return configs, c.ArgErr()
}
if c.Val() == "dotfiles" && !strings.HasSuffix(ruleType, "_r") {
ruleType += "_r"
}
rule := &filemanager.Rule{
Allow: ruleType == "allow" || ruleType == "allow_r",
Regex: ruleType == "allow_r" || ruleType == "block_r",
}
if rule.Regex && c.Val() == "dotfiles" {
rule.Regexp = regexp.MustCompile("\\/\\..+")
} else if rule.Regex {
rule.Regexp = regexp.MustCompile(c.Val())
} else {
rule.Path = c.Val()
}
u.Rules = append(u.Rules, rule)
default:
// Is it a new user? Is it?
val := c.Val()
// Checks if it's a new user!
if !strings.HasSuffix(val, ":") {
fmt.Println("Unknown option " + val)
}
// Get the username, sets the current user, and initializes it
val = strings.TrimSuffix(val, ":")
m.NewUser(val)
name = val
}
}
configs = append(configs, m)
}
return configs, nil
}
func makeCommand(c *caddy.Controller) (filemanager.Command, error) {
fn := func(r *http.Request, c *filemanager.FileManager, u *filemanager.User) error { return nil }
args := c.RemainingArgs()
if len(args) == 0 {
return fn, c.ArgErr()
}
nonblock := false
if len(args) > 1 && args[len(args)-1] == "&" {
// Run command in background; non-blocking
nonblock = true
args = args[:len(args)-1]
}
command, args, err := caddy.SplitCommandAndArgs(strings.Join(args, " "))
if err != nil {
return fn, c.Err(err.Error())
}
fn = func(r *http.Request, c *filemanager.FileManager, u *filemanager.User) error {
path := strings.Replace(r.URL.Path, c.WebDavURL, "", 1)
path = u.Scope() + "/" + path
path = filepath.Clean(path)
for i := range args {
args[i] = strings.Replace(args[i], "{path}", path, -1)
}
cmd := exec.Command(command, args...)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if nonblock {
log.Printf("[INFO] Nonblocking Command:\"%s %s\"", command, strings.Join(args, " "))
return cmd.Start()
}
log.Printf("[INFO] Blocking Command:\"%s %s\"", command, strings.Join(args, " "))
return cmd.Run()
}
return fn, nil
}