From c2d48d48b1f09239dd3a2b603c5c1f44ef589d89 Mon Sep 17 00:00:00 2001
From: Valentin Ochs <a@0au.de>
Date: Fri, 10 May 2019 22:52:08 +0200
Subject: [PATCH] Initial commit

---
 mailcap-client.py |  18 +++++++
 mailcap-server.py | 119 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 137 insertions(+)
 create mode 100644 mailcap-client.py
 create mode 100644 mailcap-server.py

diff --git a/mailcap-client.py b/mailcap-client.py
new file mode 100644
index 0000000..e4d6fbd
--- /dev/null
+++ b/mailcap-client.py
@@ -0,0 +1,18 @@
+#!python3
+import struct
+import socket
+import os
+import sys
+import mimetypes
+
+s = socket.socket(socket.AF_UNIX)
+s.connect(os.path.join(os.environ["HOME"], ".mailcap.sock"))
+
+file = sys.argv[1]
+mime = mimetypes.guess_type(file)[0]
+data = open(file, "rb").read()
+
+def strtr(x, c="B"):
+    return struct.pack(c, len(x)) + x
+
+s.sendall(strtr(file.encode('utf-8')) + strtr(mime.encode('utf-8')) + strtr(data, "!I"))
diff --git a/mailcap-server.py b/mailcap-server.py
new file mode 100644
index 0000000..1e6c5e4
--- /dev/null
+++ b/mailcap-server.py
@@ -0,0 +1,119 @@
+#!python3
+import struct
+import socket
+import os
+import tempfile
+import mailcap
+import sys
+
+sockpath = "mailcap.sock"
+
+if os.path.exists(sockpath):
+    os.remove(sockpath)
+
+class Server(object):
+    class Connection(object):
+        def __init__(self, conn):
+            self._conn = conn
+    
+        def timeout(self, timeout):
+            return self._conn.settimeout(timeout)
+
+        def close(self):
+            self._conn.close()
+
+        def recv(self, size):
+            data = self._conn.recv(size)
+            return data
+    
+        def recv_exact(self, length):
+            retval = bytes()
+            while len(retval) < length:
+                data = self.recv(length - len(retval))
+                if len(data) == 0:
+                    return None
+                retval += data
+            return retval
+
+    def __init__(self, path="mailcap.sock"):
+        self._socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+        self._socket.bind(path)
+        self._socket.listen(3)
+        self._dir = tempfile.TemporaryDirectory()
+
+    def close(self):
+        self._socket.close()
+        self._dir.cleanup()
+
+    def next_file(self, initial_timeout=None, timeout=5):
+        conn = self.Connection(self._socket.accept()[0])
+        conn.timeout(initial_timeout)
+
+        data = conn.recv_exact(1)
+        if data is None:
+            return None
+        fn_len = struct.unpack("B", data)[0]
+
+        conn.timeout(timeout)
+        
+        data = conn.recv_exact(fn_len)
+        if data is None:
+            return None
+        fn = data.decode('utf-8')
+        fn = fn.replace("/", "_")
+        if len(fn) == 0 or fn in ['.', '..']:
+            return None
+        
+        data = conn.recv_exact(1)
+        if data is None:
+            return None
+        mime_len = struct.unpack("B", data)[0]
+        
+        data = conn.recv_exact(mime_len)
+        if data is None:
+            return None
+        mime = data.decode('utf-8')
+
+        data = conn.recv_exact(4)
+        if data is None:
+            return None
+        file_len = struct.unpack("!I", data)[0]
+
+        print(fn, mime)
+        
+        fn = os.path.join(self._dir.name, fn)
+        with open(fn, "wb+") as f:
+            while file_len > 0:
+                data = conn.recv(min(4096, file_len))
+                f.write(data)
+                file_len -= len(data)
+
+        conn.close()
+
+        if file_len is 0:
+            return fn, mime
+        else:
+            os.remove(fn)
+            return None
+
+if __name__ == "__main__":
+    if len(sys.argv) > 1:
+        if sys.argv[1] == "-h":
+            print("Usage: %s [socket_path = mailcap.sock]" % (sys.argv[0],))
+            exit()
+        else:
+            sockpath = sys.argv[1]
+    if os.path.exists(sockpath):
+        os.remove(sockpath)
+    sv = Server(sockpath)
+    caps = mailcap.getcaps()
+    while True:
+        rv = sv.next_file()
+        if rv:
+            f, mime = rv
+            print(f, mime)
+            match = mailcap.findmatch(caps, mime, filename=f)
+            if match:
+                os.system(match[0])
+                if 'nodelete' not in match[1]:
+                    os.remove(f)