Add python xdb maker

maker/python/xdb/segment.py

@@ -0,0 +1,69 @@
+#  Created by leolin49 on 2022/7/7.
+#  Copyright (C) 2022 leolin49. All rights reserved.
+import util
+
+
+class Segment:
+    start_ip = 0
+    end_ip = 0
+    region = ""
+
+    def __init__(self, sip=0, eip=0, reg=""):
+        self.start_ip, self.end_ip = sip, eip
+        self.region = reg
+
+    def split(self) -> list:
+        """Split the segment based on the pre-two bytes."""
+        # 1, split the segment with the first byte
+        t_list_1 = []
+        s_byte_1, e_byte_1 = (self.start_ip >> 24) & 0xFF, (self.end_ip >> 24) & 0xFF
+        n_sip = self.start_ip
+        for i in range(s_byte_1, e_byte_1 + 1):
+            sip = (i << 24) | (n_sip & 0xFFFFFF)
+            eip = (i << 24) | 0xFFFFFF
+            if eip < self.end_ip:
+                n_sip = (i + 1) << 24
+            else:
+                eip = self.end_ip
+
+            # append the new segment (maybe)
+            t_list_1.append(Segment(sip, eip))
+
+        # 2, split the segments with the second byte
+        t_list_2 = []
+        for s in t_list_1:
+            base = s.start_ip & 0xFF000000
+            n_sip = s.start_ip
+            s_byte_2, e_byte_2 = (s.start_ip >> 16) & 0xFF, (s.end_ip >> 16) & 0xFF
+            for i in range(s_byte_2, e_byte_2 + 1):
+                sip = base | (i << 16) | (n_sip & 0xFFFF)
+                eip = base | (i << 16) | 0xFFFF
+                if eip < self.end_ip:
+                    n_sip = 0
+                else:
+                    eip = self.end_ip
+
+                t_list_2.append(Segment(sip, eip, self.region))
+
+        return t_list_2
+
+    def string(self) -> str:
+        return util.long2ip(self.start_ip) + "|" + util.long2ip(self.end_ip) + "|" + self.region
+
+
+def segment_from(seg: str) -> Segment:
+    segment = Segment()
+    ps = seg.split("|", 3)
+    if len(ps) != 3:
+        return segment
+
+    sip = util.checkip(ps[0])
+    if sip == -1:
+        return segment
+    eip = util.checkip(ps[1])
+    if eip == -1:
+        return segment
+
+    segment.start_ip, segment.end_ip = sip, eip
+    segment.region = ps[2]
+    return segment