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NFC/Generate URL/gen_url_nfc.py

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+#!/usr/local/bin/python3
+"""
+Generates NFC with URL address data and outputs Flipper NFC "save" file
+this is a 5 min hack,  No Guarantees
+
+    python3 gen_url_nfc.py https://youtu.be/dQw4w9WgXcQ "Rick Roll". > rickroll.nfc
+
+    requires ndeflib
+"""
+
+import sys
+import ndef
+
+verbose = 1
+
+nfc_header = """Filetype: Flipper NFC device
+Version: 2
+# Nfc device type can be UID, Mifare Ultralight, Mifare Classic, Bank card
+Device type: NTAG215
+# UID, ATQA and SAK are common for all formats
+UID: 04 10 56 01 74 48 03
+ATQA: 44 00
+SAK: 00
+# Mifare Ultralight specific data
+Signature: A5 80 A4 CC A0 C3 A1 F6 8B BE 6F EE 83 A6 B9 EE 36 F8 FB C8 14 5A 23 AA 29 DB 78 56 07 B9 6B 92
+Mifare version: 00 04 04 02 01 00 11 03
+Counter 0: 0
+Tearing 0: 00
+Counter 1: 0
+Tearing 1: 00
+Counter 2: 0
+Tearing 2: 00
+Pages total: 135
+"""
+
+data_static = [
+    0x04, 0x10, 0x56, 0xCA,     # 01 serial number
+    0x01, 0x74, 0x48, 0x03,     # 02 serial number
+    0x3E, 0x48, 0x00, 0x00,     # 03 serial number, internal, lock bytes, lock bytes
+    0xE1, 0x10, 0x3E, 0x00,     # 04 Capability Container
+]
+
+conf_pages = [
+    0x00, 0x00, 0x00, 0xBD,      # 130
+    0x04, 0x00, 0x00, 0xFF,      # 131
+    0x00, 0x05, 0x00, 0x00,      # 132
+    0x00, 0x00, 0x00, 0x00,      # 133
+    0x00, 0x00, 0x00, 0x00,      # 134
+]
+
+
+def print_nfc_sub(t_data, file=sys.stdout):
+
+    print(nfc_header, end='', file=file)
+
+    p = 0
+    for x in range(0, 540, 4):
+        print(f"Page {p}: {t_data[x]:02X} {t_data[x +1]:02X} "
+               f"{t_data[x +2]:02X} {t_data[x +3]:02X}", file=file)
+        p = p + 1
+
+
+def gen_nfc_sub(tag_data):
+
+    tag_message = []
+    data_list = []
+
+    for x in tag_data:
+        if x[0] == 'txt':
+            tag_message.append( ndef.TextRecord(x[1], "en") )
+        elif x[0] == 'url':
+            tag_message.append(ndef.UriRecord(x[1]))
+
+        if verbose:
+            print(x, file=sys.stderr)
+            print(tag_message[-1:], file=sys.stderr)
+
+    buf = b"".join((ndef.message_encoder(tag_message)))
+
+    m_len = len(buf)
+
+    if verbose:
+        print("buf", m_len, hex(m_len), buf, file=sys.stderr)
+
+    data_list.extend(data_static)
+    data_list.append(3)         # Message Flags
+    data_list.append(m_len)         # Type Length
+    data_list.extend(list(buf))
+
+    data_list.append(0xFE)      # end of Data
+
+    data_len = len(data_list)
+
+    if verbose:
+        print("data_list", data_len,  data_list, file=sys.stderr)
+
+    x = 520 - data_len
+    data_list.extend([0] * x)
+    data_list.extend(conf_pages)
+
+    return data_list
+
+
+# url_str = "https://youtu.be/dQw4w9WgXcQ"
+# title_str = "Rick Roll"
+
+if __name__ == '__main__':
+
+    arg_data = []
+
+    for a in sys.argv[1:]:
+        if a.startswith("http"):
+            arg_data.append( ("url", a) )
+        else:
+            arg_data.append( ("txt", a) )
+
+    if not arg_data:
+        print("requires at least one argument\n"
+            "Please provide URL and optional Title\n\n"
+            f"{sys.argv[0]} : https://some.url  'Title'")
+        sys.exit()
+
+    nfc_data = gen_nfc_sub(arg_data)
+
+    print_nfc_sub(nfc_data)
+
+    sys.exit()

NFC/Generate URL/gen_url_nfc_requirements

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+requires ndeflib
+pip install ndeflib