b6532b56d2
This new action can be used to dump all java applications as either raw IJC file or converted to CAP format (the usual format generated by JavaCard toolchains). Change-Id: I51cffa5ba3ddbea491341d678ec9249d7cf470a5
20 lines
698 B
Python
20 lines
698 B
Python
# JavaCard related utilities
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import zipfile
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import struct
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import sys
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import io
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def ijc_to_cap(in_file: io.IOBase, out_zip: zipfile.ZipFile, p : str = "foo"):
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"""Convert an ICJ (Interoperable Java Card) file [back] to a CAP file."""
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TAGS = ["Header", "Directory", "Applet", "Import", "ConstantPool", "Class", "Method", "StaticField", "RefLocation", "Export", "Descriptor", "Debug"]
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b = in_file.read()
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while len(b):
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tag, size = struct.unpack('!BH', b[0:3])
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out_zip.writestr(p+"/javacard/"+TAGS[tag-1]+".cap", b[0:3+size])
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b = b[3+size:]
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# example usage:
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# with io.open(sys.argv[1],"rb") as f, zipfile.ZipFile(sys.argv[2], "wb") as z:
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# ijc_to_cap(f, z)
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