implement stat

2 files changed, 62 insertions, 3 deletions

diff --git a/src/main/kotlin/Connection.kt b/src/main/kotlin/Connection.kt
index 5db6b51..8908364 100644
--- a/src/main/kotlin/Connection.kt
+++ b/src/main/kotlin/Connection.kt
@@ -284,8 +284,63 @@ class Connection(transLay: TransportLayer) : ProtocolTranslator {
         val imsg = checkedInMessage(omsg.tag)
     }
 
-    override fun stat(path: String) {
-        TODO("Not yet implemented")
+    override fun stat(fid: UInt): Stat {
+        val omsg = OutMessage(NinePMessageType.TSTAT, this.tagGen.generate(), listOf("fid"),
+            mapOf(
+                "fid" to Pair(BigInteger(fid.toString()), 4u)
+            ),
+            emptyMap(),
+            emptyMap(),
+            this.maxSize
+        )
+        omsg.write(this.tl)
+        val imsg = checkedInMessage(omsg.tag)
+        imsg.applyField(InMessage.Field("nstat", InMessage.Field.Type.INTEGER, 2u))
+        val nstat = imsg.fieldsInt["nstat"]!!.toInt().toUInt()
+        imsg.applyField(InMessage.Field("stat", InMessage.Field.Type.RAW, nstat))
+        val rawStat = imsg.fieldsRaw["stat"]!!.toList()
+
+        var offset = 0
+        val qid = QID(rawStat.slice(0..<13))
+        offset += 13
+        val mode = FilePermissions(rawStat.slice(offset+0..<offset+4))
+        offset += 4
+
+        val intFielSizes = listOf(4, 4, 8)
+        val intFields: MutableList<BigInteger> = mutableListOf()
+        for (size in intFielSizes) {
+            intFields.add(InMessage.convInteger(rawStat, offset, size))
+            offset += size
+        }
+        val atime = intFields[0].toInt().toUInt()
+        val mtime = intFields[1].toInt().toUInt()
+        val length = intFields[2].toLong().toULong()
+
+        val strAmount = 4
+        val strFields: MutableList<String> = mutableListOf()
+        for (i in 0..strAmount) {
+            val str = InMessage.convString(rawStat, offset)
+            strFields.add(str)
+            offset += str.length
+        }
+        val name = strFields[0]
+        val uid = strFields[1]
+        val gid = strFields[2]
+        val muid = strFields[3]
+
+        val stat = Stat(
+            fid,
+            qid,
+            mode,
+            atime,
+            mtime,
+            length,
+            name,
+            uid,
+            gid,
+            muid
+        )
+        return stat
     }
 
     override fun wstat(path: String) {
diff --git a/src/main/kotlin/ProtocolTranslator.kt b/src/main/kotlin/ProtocolTranslator.kt
index 5148120..1ec4379 100644
--- a/src/main/kotlin/ProtocolTranslator.kt
+++ b/src/main/kotlin/ProtocolTranslator.kt
@@ -147,8 +147,12 @@ interface ProtocolTranslator {
 
     /**
      * Inquire file attributes.
+     *
+     * @param fid The FID of the file to inquire.
+     * @return All the file attributes of the file associated with [fid].
+     *
      */
-    fun stat(path: String)
+    fun stat(fid: UInt): Stat
 
     /**
      * Change file attributes.