update doc

README.md

@@ -15,7 +15,8 @@ Requires:
 
 Optional:
 - screen (key caching and clipboard time)
-- openssh (for remote files)
+- lftp (for ftps remote files)
+- curl (for WebDAV remote files)
 - zenity (GUI prompt)
 - kdialog (better GUI prompt in KDE)
 - xclip (copy on X)
@@ -29,7 +30,7 @@ From [zpkg](https://github.com/zawwz/zpkg) package repository
 
 Requires [lxsh](https://github.com/zawwz/lxsh)
 
-Clone this repository then run `make install`
+Clone this repository then run `sudo make install`
 
 # Use
 
@@ -57,14 +58,36 @@ zpass will load by default the file `.config/zpass/default.conf` in your home di
 
 ### Configuring remote file
 
-You can configure zpass to use a file on a remote server.
+You can configure zpass to use a file on a remote server. <br>
-You need SSH access to the target machine.<br>
+Multiple methods of remote access can be used:
-Here is an example configuration:
+- SSH+SCP (requires SSH key configured)
+- SFTP (requires SSH key configured)
+- FTPS
+- WebDAV (note: only HTTPS, not HTTP)
+
+SFTP and WebDAV are the recommended options, as they are the easiest, most secure and most stable options. <br>
+SFTP is the easiest to use as you only need a configured SSH access to a machine,
+however if you want as little delay as possible, you should use WebDAV.
+
+### SFTP example
+
 ```
-ZPASS_REMOTE_ADDR=user@example.com
+ZPASS_REMOTE_METHOD=sftp
+ZPASS_REMOTE_ADDR=example.com
+ZPASS_REMOTE_USER=user
 ZPASS_SSH_ID=~/.ssh/id_rsa
 ```
 
+### WebDAV example
+
+```
+ZPASS_REMOTE_METHOD=webdav
+ZPASS_REMOTE_ADDR=example.com
+ZPASS_PATH=zpass
+ZPASS_REMOTE_USER=user
+ZPASS_REMOTE_PASSWORD=supersecretpassword
+```
+
 ### Making the cache volatile
 
 If you are caching keys, by default zpass uses `~/.cache` as a caching path.
@@ -73,7 +96,7 @@ leaving a file containing the key in plaintext. <br>
 This can be fixed by pointing the cache path to a volatile filesystem. <br>
 For example:
 ```
-ZPASS_CACHE_PATH=/tmp/zpasscache
+ZPASS_CACHE_PATH=$XDG_RUNTIME_DIR/zpasscache
 ```
 
 # Troubleshooting
@@ -81,3 +104,16 @@ ZPASS_CACHE_PATH=/tmp/zpasscache
 ### Prompt keeps appearing even with correct password
 
 Make sure your gpg configuration is correct, you can run `gpg -c < /dev/null` to check
+
+### I can't get a remote file to work
+
+First verify that you can connect to the remote server with the appropriate protocol by using a client.
+Then check that you have the correct rights to the target file (`$ZPASS_PATH/$ZPASS_FILE.tar.gpg`).
+
+If you're attempting the create the file and the folder `$ZPASS_PATH` doesn't exist,
+make sure you have correct rights to create said folder.
+
+### I'm encountering another bug
+
+Generate a debug build (`make debug`) and run with environment `DEBUG=true` set,
+then send the full output as an issue.