Add simple magic-folder leave command

[tahoe-lafs/tahoe-lafs.git] / src / allmydata / scripts / magic_folder_cli.py

diff --git a/src/allmydata/scripts/magic_folder_cli.py b/src/allmydata/scripts/magic_folder_cli.py
index ef0d76f69af5fd5c2c53d95422347b8f67967099..098b2fcc42a22c1cb00da6f1861e38707f7f525f 100644 (file)
--- a/src/allmydata/scripts/magic_folder_cli.py
+++ b/src/allmydata/scripts/magic_folder_cli.py
@@ -10,7 +10,7 @@ from allmydata.util.assertutil import precondition
 from .common import BaseOptions, BasedirOptions, get_aliases
 from .cli import MakeDirectoryOptions, LnOptions, CreateAliasOptions
 import tahoe_mv
-from allmydata.util.encodingutil import argv_to_abspath, argv_to_unicode
+from allmydata.util.encodingutil import argv_to_abspath, argv_to_unicode, to_str
 from allmydata.util import fileutil
 from allmydata import uri
 
@@ -27,10 +27,13 @@ class CreateOptions(BasedirOptions):
             raise usage.UsageError("An alias must end with a ':' character.")
         self.alias = alias[:-1]
         self.nickname = None if nickname is None else argv_to_unicode(nickname)
-        self.local_dir = None if local_dir is None else argv_to_abspath(local_dir)
+
+        # Expand the path relative to the current directory of the CLI command, not the node.
+        self.local_dir = None if local_dir is None else argv_to_abspath(local_dir, long_path=False)
+
         if self.nickname and not self.local_dir:
             raise usage.UsageError("If NICKNAME is specified then LOCAL_DIR must also be specified.")
-        node_url_file = os.path.join(self['node-directory'], "node.url")
+        node_url_file = os.path.join(self['node-directory'], u"node.url")
         self['node-url'] = fileutil.read(node_url_file).strip()
 
 def _delegate_options(source_options, target_options):
@@ -68,12 +71,8 @@ def create(options):
             return rc
         invite_code = invite_options.stdout.getvalue().strip()
         join_options = _delegate_options(options, JoinOptions())
-        join_options.invite_code = invite_code
-        fields = invite_code.split(INVITE_SEPARATOR)
-        if len(fields) != 2:
-            raise usage.UsageError("Invalid invite code.")
-        join_options.magic_readonly_cap, join_options.dmd_write_cap = fields
         join_options.local_dir = options.local_dir
+        join_options.invite_code = invite_code
         rc = join(join_options)
         if rc != 0:
             print >>options.stderr, "magic-folder: failed to join after create\n"
@@ -92,7 +91,7 @@ class InviteOptions(BasedirOptions):
             raise usage.UsageError("An alias must end with a ':' character.")
         self.alias = alias[:-1]
         self.nickname = argv_to_unicode(nickname)
-        node_url_file = os.path.join(self['node-directory'], "node.url")
+        node_url_file = os.path.join(self['node-directory'], u"node.url")
         self['node-url'] = open(node_url_file, "r").read().strip()
         aliases = get_aliases(self['node-directory'])
         self.aliases = aliases
@@ -138,32 +137,57 @@ class JoinOptions(BasedirOptions):
     synopsis = "INVITE_CODE LOCAL_DIR"
     dmd_write_cap = ""
     magic_readonly_cap = ""
-    def parseInvite(self, invite_code, local_dir):
-        self.local_dir = None if local_dir is None else argv_to_abspath(local_dir)
-        fields = invite_code.split(INVITE_SEPARATOR)
-        if len(fields) != 2:
-            raise usage.UsageError("Invalid invite code.")
-        self.magic_readonly_cap, self.dmd_write_cap = fields
     def parseArgs(self, invite_code, local_dir):
         BasedirOptions.parseArgs(self)
-        self.parseInvite(invite_code, local_dir)
+
+        # Expand the path relative to the current directory of the CLI command, not the node.
+        self.local_dir = None if local_dir is None else argv_to_abspath(local_dir, long_path=False)
+        self.invite_code = to_str(argv_to_unicode(invite_code))
 
 def join(options):
-    dmd_cap_file = os.path.join(options["node-directory"], "private/magic_folder_dircap")
-    collective_readcap_file = os.path.join(options["node-directory"], "private/collective_dircap")
+    fields = options.invite_code.split(INVITE_SEPARATOR)
+    if len(fields) != 2:
+        raise usage.UsageError("Invalid invite code.")
+    magic_readonly_cap, dmd_write_cap = fields
+
+    dmd_cap_file = os.path.join(options["node-directory"], u"private", u"magic_folder_dircap")
+    collective_readcap_file = os.path.join(options["node-directory"], u"private", u"collective_dircap")
+    magic_folder_db_file = os.path.join(options["node-directory"], u"private", u"magicfolderdb.sqlite")
 
-    fileutil.write(dmd_cap_file, options.dmd_write_cap)
-    fileutil.write(collective_readcap_file, options.magic_readonly_cap)
-    fileutil.write(os.path.join(options["node-directory"], "tahoe.cfg"),
+    if os.path.exists(dmd_cap_file) or os.path.exists(collective_readcap_file) or os.path.exists(magic_folder_db_file):
+        raise usage.UsageError("Cannot join. Already joined.")
+
+    fileutil.write(dmd_cap_file, dmd_write_cap)
+    fileutil.write(collective_readcap_file, magic_readonly_cap)
+
+    # FIXME: modify any existing [magic_folder] fields, rather than appending.
+    fileutil.write(os.path.join(options["node-directory"], u"tahoe.cfg"),
                    "[magic_folder]\nenabled = True\nlocal.directory = %s\n"
                    % (options.local_dir.encode('utf-8'),), mode="ab")
     return 0
 
+class LeaveOptions(BasedirOptions):
+    synopsis = ""
+    def parseArgs(self):
+        BasedirOptions.parseArgs(self)
+
+def leave(options):
+    dmd_cap_file = os.path.join(options["node-directory"], u"private", u"magic_folder_dircap")
+    collective_readcap_file = os.path.join(options["node-directory"], u"private", u"collective_dircap")
+    magic_folder_db_file = os.path.join(options["node-directory"], u"private", u"magicfolderdb.sqlite")
+    for f in [dmd_cap_file, collective_readcap_file, magic_folder_db_file]:
+        try:
+            os.remove(f)
+        except OSError,e:
+            pass
+    return 0
+
 class MagicFolderCommand(BaseOptions):
     subCommands = [
         ["create", None, CreateOptions, "Create a Magic Folder."],
         ["invite", None, InviteOptions, "Invite someone to a Magic Folder."],
         ["join", None, JoinOptions, "Join a Magic Folder."],
+        ["leave", None, LeaveOptions, "Leave a Magic Folder."],
     ]
     def postOptions(self):
         if not hasattr(self, 'subOptions'):
@@ -182,6 +206,7 @@ subDispatch = {
     "create": create,
     "invite": invite,
     "join": join,
+    "leave": leave,
 }
 
 def do_magic_folder(options):