Created
January 17, 2012 21:49
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generate a s3 upload form
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import json | |
import base64 | |
import hmac, sha | |
import datetime | |
html = """ | |
<html> | |
<head> | |
<title>Upload</title> | |
</head> | |
<body> | |
<form action="%(s3url)s" method="post" enctype="multipart/form-data"> | |
<input type="hidden" name="AWSAccessKeyId" value="%(accesskeyid)s"></input> | |
<input type="hidden" name="acl" value="%(acl)s"></input> | |
<input type="hidden" name="key" value="%(key)s"></input> | |
<input type="hidden" name="policy" value="%(policy)s"></input> | |
<input type="hidden" name="redirect" value="%(redirect)s"></input> | |
<input type="hidden" name="signature" value="%(signature)s"></input> | |
<input type="file" name="file"></input> | |
<input type="submit" value="Upload"></input> | |
</form> | |
</body> | |
</html>""" | |
accesskeyid = "..." | |
secret = "..." | |
expiration = "2012-01-20T12:00:00.000Z" | |
bucket = "..." | |
key_prefix = base64.urlsafe_b64encode(hmac.new("...", datetime.datetime.now().strftime("%s"), sha).digest()) | |
max_bytes = 500000000 | |
acl = "private" | |
redirect = "http://" + bucket + ".s3.amazonaws.com/success.html" | |
policy_doc = { | |
"expiration": expiration, | |
"conditions": [ | |
{"acl": acl}, | |
{"bucket": bucket}, | |
{"redirect": redirect}, | |
["starts-with", "$key", key_prefix], | |
["content-length-range", 1, max_bytes] | |
] | |
} | |
policy_json = json.dumps(policy_doc) | |
policy = base64.b64encode(policy_json) | |
h = hmac.new(secret, policy, sha) | |
signature = base64.b64encode(h.digest()) | |
html = html % { | |
"s3url": "http://" + bucket + ".s3.amazonaws.com/", | |
"accesskeyid": accesskeyid, | |
"acl": acl, | |
"key": key_prefix + "-${filename}", | |
"policy": policy, | |
"redirect": redirect, | |
"signature": signature | |
} | |
with open("upload-" + key_prefix + ".html", "w") as of: | |
of.write(html) |
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