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Diffstat (limited to 'addon-sdk/source/python-lib/cuddlefish/preflight.py')
| -rwxr-xr-x | addon-sdk/source/python-lib/cuddlefish/preflight.py | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/addon-sdk/source/python-lib/cuddlefish/preflight.py b/addon-sdk/source/python-lib/cuddlefish/preflight.py deleted file mode 100755 index c92a0890d..000000000 --- a/addon-sdk/source/python-lib/cuddlefish/preflight.py +++ /dev/null @@ -1,77 +0,0 @@ -# This Source Code Form is subject to the terms of the Mozilla Public -# License, v. 2.0. If a copy of the MPL was not distributed with this -# file, You can obtain one at http://mozilla.org/MPL/2.0/. - -import os, sys -import base64 -import simplejson as json - -def create_jid(): - """Return 'jid1-XYZ', where 'XYZ' is a randomly-generated string. (in the - previous jid0- series, the string securely identified a specific public - key). To get a suitable add-on ID, append '@jetpack' to this string. - """ - # per https://developer.mozilla.org/en/Install_Manifests#id all XPI id - # values must either be in the form of a 128-bit GUID (crazy braces - # and all) or in the form of an email address (crazy @ and all). - # Firefox will refuse to install an add-on with an id that doesn't - # match one of these forms. The actual regexp is at: - # http://mxr.mozilla.org/mozilla-central/source/toolkit/mozapps/extensions/internal/XPIProvider.jsm#130 - # So the JID needs an @-suffix, and the only legal punctuation is - # "-._". So we start with a base64 encoding, and replace the - # punctuation (+/) with letters (AB), losing a few bits of integrity. - - # even better: windows has a maximum path length limitation of 256 - # characters: - # http://msdn.microsoft.com/en-us/library/aa365247%28VS.85%29.aspx - # (unless all paths are prefixed with "\\?\", I kid you not). The - # typical install will put add-on code in a directory like: - # C:\Documents and Settings\<username>\Application Data\Mozilla\Firefox\Profiles\232353483.default\extensions\$JID\... - # (which is 108 chars long without the $JID). - # Then the unpacked XPI contains packaged resources like: - # resources/$JID-api-utils-lib/main.js (35 chars plus the $JID) - # - # We create a random 80 bit string, base64 encode that (with - # AB instead of +/ to be path-safe), then bundle it into - # "jid1-XYZ@jetpack". This gives us 27 characters. The resulting - # main.js will have a path length of 211 characters, leaving us 45 - # characters of margin. - # - # 80 bits is enough to generate one billion JIDs and still maintain lower - # than a one-in-a-million chance of accidental collision. (1e9 JIDs is 30 - # bits, square for the "birthday-paradox" to get 60 bits, add 20 bits for - # the one-in-a-million margin to get 80 bits) - - # if length were no issue, we'd prefer to use this: - h = os.urandom(80/8) - s = base64.b64encode(h, "AB").strip("=") - jid = "jid1-" + s - return jid - -def preflight_config(target_cfg, filename, stderr=sys.stderr): - modified = False - config = json.load(open(filename, 'r')) - - if "id" not in config: - print >>stderr, ("No 'id' in package.json: creating a new ID for you.") - jid = create_jid() - config["id"] = jid - modified = True - - if modified: - i = 0 - backup = filename + ".backup" - while os.path.exists(backup): - if i > 1000: - raise ValueError("I'm having problems finding a good name" - " for the backup file. Please move %s out" - " of the way and try again." - % (filename + ".backup")) - backup = filename + ".backup-%d" % i - i += 1 - os.rename(filename, backup) - new_json = json.dumps(config, indent=4) - open(filename, 'w').write(new_json+"\n") - return False, True - - return True, False |