99 lines
3.5 KiB
Go
99 lines
3.5 KiB
Go
// Copyright (c) 2018, Andreas Schneider
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the <organization> nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package main
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import (
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"context"
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"flag"
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"fmt"
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pwgen "github.com/sethvargo/go-password/password"
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"golang.org/x/crypto/bcrypt"
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"golang.org/x/net/webdav"
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"math/rand"
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"net/http"
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"time"
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)
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var configFile = flag.String("config", "sharedav.yaml", "Config file to be used.")
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var genPassword = flag.Bool("genpass", false, "If set, a password will be generated and hashed.")
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var hashPassword = flag.String("hashpass", "", "If set, the given password will be hashed.")
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func main() {
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flag.Parse()
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if *genPassword {
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// math.rand is not secure. For determining the number of digits in a password
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// it should suffice, though.
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rand.Seed(time.Now().UnixNano())
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pwLen := 32
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pw, err := pwgen.Generate(pwLen, rand.Intn(pwLen/2), 0, false, true)
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if err != nil {
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panic(err)
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}
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hash, err := bcrypt.GenerateFromPassword([]byte(pw), 0)
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if err != nil {
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panic(err)
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}
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fmt.Printf("Password: %s\n", pw)
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fmt.Printf(" Hash: %s\n", hash)
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return
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} else if *hashPassword != "" {
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hash, err := bcrypt.GenerateFromPassword([]byte(*hashPassword), 0)
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if err != nil {
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panic(err)
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}
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fmt.Println(string(hash))
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return
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}
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c := LoadConfig(*configFile)
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h := &webdav.Handler{}
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h.LockSystem = webdav.NewMemLS()
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h.FileSystem = BaseDir(c.BaseDirectory)
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authenticatedWebdavHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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username, password, ok := r.BasicAuth()
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directory := ""
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if ok {
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ok, directory = c.ValidateDAVUser(username, password)
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}
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if !ok {
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w.Header().Set("WWW-Authenticate", `Basic realm="ShareDAV"`)
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http.Error(w, "unauthorized", http.StatusUnauthorized)
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return
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}
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// Use the WebDAV handler to actually serve the request. Also enhance the context
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// to contain the subdirectory (of the base directory) which contains the data for
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// the authenticated user.
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h.ServeHTTP(w, r.WithContext(context.WithValue(r.Context(), "dir", directory)))
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})
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http.ListenAndServe(c.ListenAddress, authenticatedWebdavHandler)
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}
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