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October 10, 2025 02:26
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python3 -d $PWD/b64mime.py "data:text/html;base64,PGh0bWw+PGhlYWQ+PHRpdGxlPmZvb2JhcjwvdGl0bGU+PC9oZWFkPjxib2R5PkhlbGxvLCB3b3JsZCE8L2JvZHk+PC9odG1sPg=="
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| # Author: Pierce Brooks | |
| import os | |
| import sys | |
| import base64 | |
| import mimetypes | |
| if (len(sys.argv) < 2): | |
| sys.exit(-1) | |
| content = "" | |
| if (os.path.exists(sys.argv[1])): | |
| descriptor = open(sys.argv[1], "r") | |
| content += descriptor.read() | |
| descriptor.close() | |
| else: | |
| content += sys.argv[1] | |
| if not ("," in content): | |
| sys.exit(-2) | |
| left = content[:content.index(",")] | |
| prefix = "data:" | |
| if not (left.startswith(prefix)): | |
| sys.exit(-3) | |
| mime = left[len(prefix):] | |
| if not (";" in mime): | |
| sys.exit(-4) | |
| mime = mime[:mime.index(";")] | |
| if (sys.flags.debug): | |
| print(mime) | |
| mimetypes.init() | |
| extension = mimetypes.guess_extension(mime) | |
| if (extension == None): | |
| extension = ".dat" | |
| if not (extension.startswith(".")): | |
| extension = "."+extension | |
| if (sys.flags.debug): | |
| print(extension) | |
| data = None | |
| if (";base64" in left): | |
| base = content[content.index(","):] | |
| data = base64.b64decode(base[1:].encode()) | |
| else: | |
| data = content[(content.index(",")+1):].encode() | |
| descriptor = open(os.path.basename(sys.argv[0])+extension, "wb") | |
| descriptor.write(data) | |
| descriptor.close() | |
| sys.exit(0) |
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