Able to receive a single chunk with RECV protocol

adb.nim

@@ -48,36 +48,79 @@ proc rollBytes(bs : string) : uint32 =
     n = n or pair.b.uint32 shl pair.a
   n
 
-proc parseStat(statResult : string) : FileStat =
+proc syncMode(): Socket =
-  let command = map(statResult[0..3], proc (c : char) : string = $char(c)).join
-  let fileMode = statResult[4..7].rollBytes.BiggestInt
-  let fileSize = statResult[8..11].rollBytes
-  let fileCreated = statResult[12..15].rollBytes.int64.fromUnix
-
-  FileStat(androidFileMode: fileMode,
-           androidFileSize: fileSize,
-           androidFileModified: fileCreated)
-
-proc adbPull(filename : string) : string =
-  echo filename.len
   let socket = adbConnect()
   socket.send("host:transport-usb".makeMsg)
   discard socket.recv(1024)
 
   echo "Trying to set sync mode"
   socket.send("sync:".makeMsg)
-
   discard socket.recv(1024).parseAdb.get
 
+  socket
+
+proc recvFile(filename : string) : Option[string] =
+  # TODO handle more than one chunk :)
+  let socket : Socket = syncMode()
+
+  echo fmt"Trying to receive the file {filename}"
+
+  let filenameLen : string = filename.len.uint32.unrollBytes
+
+  socket.send("RECV" & filenameLen & filename)
+
+  let recvResult = socket.recv(8) # 64 kb + 8 bytes
+
+  echo "received the chunk"
+
+  let status = recvResult[0..3]
+
+  if status == "FAIL":
+    # Return early if we failed
+    socket.close()
+    return none(string)
+
+  echo "Getting the file length"
+  let fileLen = recvResult[4..7].rollBytes.int
+
+  assert(fileLen <= 0xffff, "File Length Should be <=65535!")
+
+  let recvBody = socket.recv(fileLen) # max 64kb length
+
+  echo "Getting the file body"
+  let fileBody = recvBody[0..fileLen-1]
+
+  socket.close()
+  return some(fileBody)
+
+proc statFile(filename : string) : FileStat =
+  let socket : Socket = syncMode()
+
   echo fmt"Trying to stat the file {filename}"
 
-  let length : string = filename.len.uint32.unrollBytes
+  let filenameLen : string = filename.len.uint32.unrollBytes
 
-  socket.send("STAT" & length & filename)
+  socket.send("STAT" & filenameLen & filename)
 
-  echo socket.recv(1024).parseStat.repr
+  let statResult : string = socket.recv(1024)
+
+  let command = map(statResult[0..3], proc (c : char) : string = $char(c)).join
+  let fileMode = statResult[4..7].rollBytes.BiggestInt
+  let fileSize = statResult[8..11].rollBytes
+  let fileCreated = statResult[12..15].rollBytes.int64.fromUnix
 
   socket.close()
+
+  FileStat(androidFileMode: fileMode,
+           androidFileSize: fileSize,
+           androidFileModified: fileCreated)
+
+proc adbPull(filename : string) : string =
+  echo filename.len
+  echo filename.statFile.repr
+
+  echo filename.recvFile
+
   return ""
 
 proc sendAdb(payload : string) : string =
@@ -111,7 +154,7 @@ discard execCmd("adb start-server")
 #else:
   #echo devices.get()
 
-echo adbPull("/system/lib/libz.so")
+echo adbPull("/etc/whitelistedapps.xml")
 
 #discard rebootPhone()