pywebpush


Namepywebpush JSON
Version 2.0.0 PyPI version JSON
download
home_pagehttps://github.com/web-push-libs/pywebpush
SummaryWebPush publication library
upload_time2024-03-14 15:52:30
maintainer
docs_urlNone
authorJR Conlin
requires_python
licenseMozilla Public License Version 2.0 ================================== 1. Definitions -------------- 1.1. "Contributor" means each individual or legal entity that creates, contributes to the creation of, or owns Covered Software. 1.2. "Contributor Version" means the combination of the Contributions of others (if any) used by a Contributor and that particular Contributor's Contribution. 1.3. "Contribution" means Covered Software of a particular Contributor. 1.4. "Covered Software" means Source Code Form to which the initial Contributor has attached the notice in Exhibit A, the Executable Form of such Source Code Form, and Modifications of such Source Code Form, in each case including portions thereof. 1.5. "Incompatible With Secondary Licenses" means (a) that the initial Contributor has attached the notice described in Exhibit B to the Covered Software; or (b) that the Covered Software was made available under the terms of version 1.1 or earlier of the License, but not also under the terms of a Secondary License. 1.6. "Executable Form" means any form of the work other than Source Code Form. 1.7. "Larger Work" means a work that combines Covered Software with other material, in a separate file or files, that is not Covered Software. 1.8. "License" means this document. 1.9. "Licensable" means having the right to grant, to the maximum extent possible, whether at the time of the initial grant or subsequently, any and all of the rights conveyed by this License. 1.10. "Modifications" means any of the following: (a) any file in Source Code Form that results from an addition to, deletion from, or modification of the contents of Covered Software; or (b) any new file in Source Code Form that contains any Covered Software. 1.11. "Patent Claims" of a Contributor means any patent claim(s), including without limitation, method, process, and apparatus claims, in any patent Licensable by such Contributor that would be infringed, but for the grant of the License, by the making, using, selling, offering for sale, having made, import, or transfer of either its Contributions or its Contributor Version. 1.12. "Secondary License" means either the GNU General Public License, Version 2.0, the GNU Lesser General Public License, Version 2.1, the GNU Affero General Public License, Version 3.0, or any later versions of those licenses. 1.13. "Source Code Form" means the form of the work preferred for making modifications. 1.14. "You" (or "Your") means an individual or a legal entity exercising rights under this License. For legal entities, "You" includes any entity that controls, is controlled by, or is under common control with You. For purposes of this definition, "control" means (a) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (b) ownership of more than fifty percent (50%) of the outstanding shares or beneficial ownership of such entity. 2. License Grants and Conditions -------------------------------- 2.1. Grants Each Contributor hereby grants You a world-wide, royalty-free, non-exclusive license: (a) under intellectual property rights (other than patent or trademark) Licensable by such Contributor to use, reproduce, make available, modify, display, perform, distribute, and otherwise exploit its Contributions, either on an unmodified basis, with Modifications, or as part of a Larger Work; and (b) under Patent Claims of such Contributor to make, use, sell, offer for sale, have made, import, and otherwise transfer either its Contributions or its Contributor Version. 2.2. Effective Date The licenses granted in Section 2.1 with respect to any Contribution become effective for each Contribution on the date the Contributor first distributes such Contribution. 2.3. Limitations on Grant Scope The licenses granted in this Section 2 are the only rights granted under this License. No additional rights or licenses will be implied from the distribution or licensing of Covered Software under this License. Notwithstanding Section 2.1(b) above, no patent license is granted by a Contributor: (a) for any code that a Contributor has removed from Covered Software; or (b) for infringements caused by: (i) Your and any other third party's modifications of Covered Software, or (ii) the combination of its Contributions with other software (except as part of its Contributor Version); or (c) under Patent Claims infringed by Covered Software in the absence of its Contributions. This License does not grant any rights in the trademarks, service marks, or logos of any Contributor (except as may be necessary to comply with the notice requirements in Section 3.4). 2.4. Subsequent Licenses No Contributor makes additional grants as a result of Your choice to distribute the Covered Software under a subsequent version of this License (see Section 10.2) or under the terms of a Secondary License (if permitted under the terms of Section 3.3). 2.5. Representation Each Contributor represents that the Contributor believes its Contributions are its original creation(s) or it has sufficient rights to grant the rights to its Contributions conveyed by this License. 2.6. Fair Use This License is not intended to limit any rights You have under applicable copyright doctrines of fair use, fair dealing, or other equivalents. 2.7. Conditions Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in Section 2.1. 3. Responsibilities ------------------- 3.1. Distribution of Source Form All distribution of Covered Software in Source Code Form, including any Modifications that You create or to which You contribute, must be under the terms of this License. You must inform recipients that the Source Code Form of the Covered Software is governed by the terms of this License, and how they can obtain a copy of this License. You may not attempt to alter or restrict the recipients' rights in the Source Code Form. 3.2. Distribution of Executable Form If You distribute Covered Software in Executable Form then: (a) such Covered Software must also be made available in Source Code Form, as described in Section 3.1, and You must inform recipients of the Executable Form how they can obtain a copy of such Source Code Form by reasonable means in a timely manner, at a charge no more than the cost of distribution to the recipient; and (b) You may distribute such Executable Form under the terms of this License, or sublicense it under different terms, provided that the license for the Executable Form does not attempt to limit or alter the recipients' rights in the Source Code Form under this License. 3.3. Distribution of a Larger Work You may create and distribute a Larger Work under terms of Your choice, provided that You also comply with the requirements of this License for the Covered Software. If the Larger Work is a combination of Covered Software with a work governed by one or more Secondary Licenses, and the Covered Software is not Incompatible With Secondary Licenses, this License permits You to additionally distribute such Covered Software under the terms of such Secondary License(s), so that the recipient of the Larger Work may, at their option, further distribute the Covered Software under the terms of either this License or such Secondary License(s). 3.4. Notices You may not remove or alter the substance of any license notices (including copyright notices, patent notices, disclaimers of warranty, or limitations of liability) contained within the Source Code Form of the Covered Software, except that You may alter any license notices to the extent required to remedy known factual inaccuracies. 3.5. Application of Additional Terms You may choose to offer, and to charge a fee for, warranty, support, indemnity or liability obligations to one or more recipients of Covered Software. However, You may do so only on Your own behalf, and not on behalf of any Contributor. You must make it absolutely clear that any such warranty, support, indemnity, or liability obligation is offered by You alone, and You hereby agree to indemnify every Contributor for any liability incurred by such Contributor as a result of warranty, support, indemnity or liability terms You offer. You may include additional disclaimers of warranty and limitations of liability specific to any jurisdiction. 4. Inability to Comply Due to Statute or Regulation --------------------------------------------------- If it is impossible for You to comply with any of the terms of this License with respect to some or all of the Covered Software due to statute, judicial order, or regulation then You must: (a) comply with the terms of this License to the maximum extent possible; and (b) describe the limitations and the code they affect. Such description must be placed in a text file included with all distributions of the Covered Software under this License. Except to the extent prohibited by statute or regulation, such description must be sufficiently detailed for a recipient of ordinary skill to be able to understand it. 5. Termination -------------- 5.1. The rights granted under this License will terminate automatically if You fail to comply with any of its terms. However, if You become compliant, then the rights granted under this License from a particular Contributor are reinstated (a) provisionally, unless and until such Contributor explicitly and finally terminates Your grants, and (b) on an ongoing basis, if such Contributor fails to notify You of the non-compliance by some reasonable means prior to 60 days after You have come back into compliance. Moreover, Your grants from a particular Contributor are reinstated on an ongoing basis if such Contributor notifies You of the non-compliance by some reasonable means, this is the first time You have received notice of non-compliance with this License from such Contributor, and You become compliant prior to 30 days after Your receipt of the notice. 5.2. If You initiate litigation against any entity by asserting a patent infringement claim (excluding declaratory judgment actions, counter-claims, and cross-claims) alleging that a Contributor Version directly or indirectly infringes any patent, then the rights granted to You by any and all Contributors for the Covered Software under Section 2.1 of this License shall terminate. 5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user license agreements (excluding distributors and resellers) which have been validly granted by You or Your distributors under this License prior to termination shall survive termination. ************************************************************************ * * * 6. Disclaimer of Warranty * * ------------------------- * * * * Covered Software is provided under this License on an "as is" * * basis, without warranty of any kind, either expressed, implied, or * * statutory, including, without limitation, warranties that the * * Covered Software is free of defects, merchantable, fit for a * * particular purpose or non-infringing. The entire risk as to the * * quality and performance of the Covered Software is with You. * * Should any Covered Software prove defective in any respect, You * * (not any Contributor) assume the cost of any necessary servicing, * * repair, or correction. This disclaimer of warranty constitutes an * * essential part of this License. No use of any Covered Software is * * authorized under this License except under this disclaimer. * * * ************************************************************************ ************************************************************************ * * * 7. Limitation of Liability * * -------------------------- * * * * Under no circumstances and under no legal theory, whether tort * * (including negligence), contract, or otherwise, shall any * * Contributor, or anyone who distributes Covered Software as * * permitted above, be liable to You for any direct, indirect, * * special, incidental, or consequential damages of any character * * including, without limitation, damages for lost profits, loss of * * goodwill, work stoppage, computer failure or malfunction, or any * * and all other commercial damages or losses, even if such party * * shall have been informed of the possibility of such damages. This * * limitation of liability shall not apply to liability for death or * * personal injury resulting from such party's negligence to the * * extent applicable law prohibits such limitation. Some * * jurisdictions do not allow the exclusion or limitation of * * incidental or consequential damages, so this exclusion and * * limitation may not apply to You. * * * ************************************************************************ 8. Litigation ------------- Any litigation relating to this License may be brought only in the courts of a jurisdiction where the defendant maintains its principal place of business and such litigation shall be governed by laws of that jurisdiction, without reference to its conflict-of-law provisions. Nothing in this Section shall prevent a party's ability to bring cross-claims or counter-claims. 9. Miscellaneous ---------------- This License represents the complete agreement concerning the subject matter hereof. If any provision of this License is held to be unenforceable, such provision shall be reformed only to the extent necessary to make it enforceable. Any law or regulation which provides that the language of a contract shall be construed against the drafter shall not be used to construe this License against a Contributor. 10. Versions of the License --------------------------- 10.1. New Versions Mozilla Foundation is the license steward. Except as provided in Section 10.3, no one other than the license steward has the right to modify or publish new versions of this License. Each version will be given a distinguishing version number. 10.2. Effect of New Versions You may distribute the Covered Software under the terms of the version of the License under which You originally received the Covered Software, or under the terms of any subsequent version published by the license steward. 10.3. Modified Versions If you create software not governed by this License, and you want to create a new license for such software, you may create and use a modified version of this License if you rename the license and remove any references to the name of the license steward (except to note that such modified license differs from this License). 10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses If You choose to distribute Source Code Form that is Incompatible With Secondary Licenses under the terms of this version of the License, the notice described in Exhibit B of this License must be attached. Exhibit A - Source Code Form License Notice ------------------------------------------- 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/. If it is not possible or desirable to put the notice in a particular file, then You may include the notice in a location (such as a LICENSE file in a relevant directory) where a recipient would be likely to look for such a notice. You may add additional accurate notices of copyright ownership. Exhibit B - "Incompatible With Secondary Licenses" Notice --------------------------------------------------------- This Source Code Form is "Incompatible With Secondary Licenses", as defined by the Mozilla Public License, v. 2.0.
keywords webpush vapid notification
VCS
bugtrack_url
requirements No requirements were recorded.
Travis-CI No Travis.
coveralls test coverage
            # Webpush Data encryption library for Python

[![Build Status](https://travis-ci.org/web-push-libs/pywebpush.svg?branch=main)](https://travis-ci.org/web-push-libs/pywebpush)
[![Requirements Status](https://requires.io/github/web-push-libs/pywebpush/requirements.svg?branch=main)](https://requires.io/github/web-push-libs/pywebpush/requirements/?branch=main)

This library is available on [pypi as pywebpush](https://pypi.python.org/pypi/pywebpush).
Source is available on [github](https://github.com/mozilla-services/pywebpush).
Please note: This library was designated as a `Critical Project` by PyPi, it is currently
maintained by [a single person](https://xkcd.com/2347/). I still accept PRs and Issues, but
make of that what you will.

## Installation

To work with this repo locally, you'll need to run `python -m venv venv`.
Then `venv/bin/pip install --editable .`


## Usage

In the browser, the promise handler for
[registration.pushManager.subscribe()](https://developer.mozilla.org/en-US/docs/Web/API/PushManager/subscribe)
returns a
[PushSubscription](https://developer.mozilla.org/en-US/docs/Web/API/PushSubscription)
object. This object has a .toJSON() method that will return a JSON object that contains all the info we need to encrypt
and push data.

As illustration, a `subscription_info` object may look like:

```json
{
  "endpoint": "https://updates.push.services.mozilla.com/push/v1/gAA...",
  "keys": { "auth": "k8J...", "p256dh": "BOr..." }
}
```

How you send the PushSubscription data to your backend, store it
referenced to the user who requested it, and recall it when there's
a new push subscription update is left as an exercise for the
reader.

### Sending Data using `webpush()` One Call

In many cases, your code will be sending a single message to many
recipients. There's a "One Call" function which will make things
easier.

```python
from pywebpush import webpush

webpush(subscription_info,
        data,
        vapid_private_key="Private Key or File Path[1]",
        vapid_claims={"sub": "mailto:YourEmailAddress"})
```

This will encode `data`, add the appropriate VAPID auth headers if required and send it to the push server identified
in the `subscription_info` block.

##### Parameters

_subscription_info_ - The `dict` of the subscription info (described above).

_data_ - can be any serial content (string, bit array, serialized JSON, etc), but be sure that your receiving
application is able to parse and understand it. (e.g. `data = "Mary had a little lamb."`)

_content_type_ - specifies the form of Encryption to use, either `'aes128gcm'` or the deprecated `'aesgcm'`. NOTE that
not all User Agents can decrypt `'aesgcm'`, so the library defaults to the RFC 8188 standard form.

_vapid_claims_ - a `dict` containing the VAPID claims required for authorization (See
[py_vapid](https://github.com/web-push-libs/vapid/tree/master/python) for more details). If `aud` is not specified,
pywebpush will attempt to auto-fill from the `endpoint`. If `exp` is not specified or set in the past, it will be set
to 12 hours from now. In both cases, the passed `dict` **will be mutated** after the call.

_vapid_private_key_ - Either a path to a VAPID EC2 private key PEM file, or a string containing the DER representation.
(See [py_vapid](https://github.com/web-push-libs/vapid/tree/master/python) for more details.) The `private_key` may be
a base64 encoded DER formatted private key, or the path to an OpenSSL exported private key file.

e.g. the output of:

```bash
openssl ecparam -name prime256v1 -genkey -noout -out private_key.pem
```

##### Example

```python
from pywebpush import webpush, WebPushException

try:
    webpush(
        subscription_info={
            "endpoint": "https://push.example.com/v1/12345",
            "keys": {
                "p256dh": "0123abcde...",
                "auth": "abc123..."
            }},
        data="Mary had a little lamb, with a nice mint jelly",
        vapid_private_key="path/to/vapid_private.pem",
        vapid_claims={
                "sub": "mailto:YourNameHere@example.org",
            }
    )
except WebPushException as ex:
    print("I'm sorry, Dave, but I can't do that: {}", repr(ex))
    # Mozilla returns additional information in the body of the response.
    if ex.response and ex.response.json():
        extra = ex.response.json()
        print("Remote service replied with a {}:{}, {}",
              extra.code,
              extra.errno,
              extra.message
              )
```

### Methods

If you expect to resend to the same recipient, or have more needs than just sending data quickly, you
can pass just `wp = WebPusher(subscription_info)`. This will return a `WebPusher` object.

The following methods are available:

#### `.send(data, headers={}, ttl=0, gcm_key="", reg_id="", content_encoding="aes128gcm", curl=False, timeout=None)`

Send the data using additional parameters. On error, returns a `WebPushException`

##### Parameters

_data_ Binary string of data to send

_headers_ A `dict` containing any additional headers to send

_ttl_ Message Time To Live on Push Server waiting for the client to reconnect (in seconds)

_gcm_key_ Google Cloud Messaging key (if using the older GCM push system) This is the API key obtained from the Google
Developer Console.

_reg_id_ Google Cloud Messaging registration ID (will be extracted from endpoint if not specified)

_content_encoding_ ECE content encoding type (defaults to "aes128gcm")

_curl_ Do not execute the POST, but return as a `curl` command. This will write the encrypted content to a local file
named `encrpypted.data`. This command is meant to be used for debugging purposes.

_timeout_ timeout for requests POST query.
See [requests documentation](http://docs.python-requests.org/en/master/user/quickstart/#timeouts).

##### Example

to send from Chrome using the old GCM mode:

```python
WebPusher(subscription_info).send(data, headers, ttl, gcm_key)
```

#### `.encode(data, content_encoding="aes128gcm")`

Encode the `data` for future use. On error, returns a `WebPushException`

##### Parameters

_data_ Binary string of data to send

_content_encoding_ ECE content encoding type (defaults to "aes128gcm")

*Note* This will return a `NoData` exception if the data is not present or empty. It is completely
valid to send a WebPush notification with no data, but encoding is a no-op in that case. Best not
to call it if you don't have data.

##### Example

```python
encoded_data = WebPush(subscription_info).encode(data)
```

## Stand Alone Webpush

If you're not really into coding your own solution, there's also a "stand-alone" `pywebpush` command in the
./bin directory.

This uses two files:

- the _data_ file, which contains the message to send, in whatever form you like.
- the _subscription info_ file, which contains the subscription information as JSON encoded data. This is usually returned by the Push `subscribe` method and looks something like:

```json
{
  "endpoint": "https://push...",
  "keys": {
    "auth": "ab01...",
    "p256dh": "aa02..."
  }
}
```

If you're interested in just testing your applications WebPush interface, you could use the Command Line:

```bash
./bin/pywebpush --data stuff_to_send.data --info subscription.info
```

which will encrypt and send the contents of `stuff_to_send.data`.

See `./bin/pywebpush --help` for available commands and options.

            

Raw data

            {
    "_id": null,
    "home_page": "https://github.com/web-push-libs/pywebpush",
    "name": "pywebpush",
    "maintainer": "",
    "docs_url": null,
    "requires_python": "",
    "maintainer_email": "",
    "keywords": "webpush,vapid,notification",
    "author": "JR Conlin",
    "author_email": "JR Conlin <src+webpusher@jrconlin.com>",
    "download_url": "https://files.pythonhosted.org/packages/a4/ba/79f4e52db8ab4d885712cb9a4b25bb036a90220e7d53b85ad6ebe6eb60d3/pywebpush-2.0.0.tar.gz",
    "platform": null,
    "description": "# Webpush Data encryption library for Python\n\n[![Build Status](https://travis-ci.org/web-push-libs/pywebpush.svg?branch=main)](https://travis-ci.org/web-push-libs/pywebpush)\n[![Requirements Status](https://requires.io/github/web-push-libs/pywebpush/requirements.svg?branch=main)](https://requires.io/github/web-push-libs/pywebpush/requirements/?branch=main)\n\nThis library is available on [pypi as pywebpush](https://pypi.python.org/pypi/pywebpush).\nSource is available on [github](https://github.com/mozilla-services/pywebpush).\nPlease note: This library was designated as a `Critical Project` by PyPi, it is currently\nmaintained by [a single person](https://xkcd.com/2347/). I still accept PRs and Issues, but\nmake of that what you will.\n\n## Installation\n\nTo work with this repo locally, you'll need to run `python -m venv venv`.\nThen `venv/bin/pip install --editable .`\n\n\n## Usage\n\nIn the browser, the promise handler for\n[registration.pushManager.subscribe()](https://developer.mozilla.org/en-US/docs/Web/API/PushManager/subscribe)\nreturns a\n[PushSubscription](https://developer.mozilla.org/en-US/docs/Web/API/PushSubscription)\nobject. This object has a .toJSON() method that will return a JSON object that contains all the info we need to encrypt\nand push data.\n\nAs illustration, a `subscription_info` object may look like:\n\n```json\n{\n  \"endpoint\": \"https://updates.push.services.mozilla.com/push/v1/gAA...\",\n  \"keys\": { \"auth\": \"k8J...\", \"p256dh\": \"BOr...\" }\n}\n```\n\nHow you send the PushSubscription data to your backend, store it\nreferenced to the user who requested it, and recall it when there's\na new push subscription update is left as an exercise for the\nreader.\n\n### Sending Data using `webpush()` One Call\n\nIn many cases, your code will be sending a single message to many\nrecipients. There's a \"One Call\" function which will make things\neasier.\n\n```python\nfrom pywebpush import webpush\n\nwebpush(subscription_info,\n        data,\n        vapid_private_key=\"Private Key or File Path[1]\",\n        vapid_claims={\"sub\": \"mailto:YourEmailAddress\"})\n```\n\nThis will encode `data`, add the appropriate VAPID auth headers if required and send it to the push server identified\nin the `subscription_info` block.\n\n##### Parameters\n\n_subscription_info_ - The `dict` of the subscription info (described above).\n\n_data_ - can be any serial content (string, bit array, serialized JSON, etc), but be sure that your receiving\napplication is able to parse and understand it. (e.g. `data = \"Mary had a little lamb.\"`)\n\n_content_type_ - specifies the form of Encryption to use, either `'aes128gcm'` or the deprecated `'aesgcm'`. NOTE that\nnot all User Agents can decrypt `'aesgcm'`, so the library defaults to the RFC 8188 standard form.\n\n_vapid_claims_ - a `dict` containing the VAPID claims required for authorization (See\n[py_vapid](https://github.com/web-push-libs/vapid/tree/master/python) for more details). If `aud` is not specified,\npywebpush will attempt to auto-fill from the `endpoint`. If `exp` is not specified or set in the past, it will be set\nto 12 hours from now. In both cases, the passed `dict` **will be mutated** after the call.\n\n_vapid_private_key_ - Either a path to a VAPID EC2 private key PEM file, or a string containing the DER representation.\n(See [py_vapid](https://github.com/web-push-libs/vapid/tree/master/python) for more details.) The `private_key` may be\na base64 encoded DER formatted private key, or the path to an OpenSSL exported private key file.\n\ne.g. the output of:\n\n```bash\nopenssl ecparam -name prime256v1 -genkey -noout -out private_key.pem\n```\n\n##### Example\n\n```python\nfrom pywebpush import webpush, WebPushException\n\ntry:\n    webpush(\n        subscription_info={\n            \"endpoint\": \"https://push.example.com/v1/12345\",\n            \"keys\": {\n                \"p256dh\": \"0123abcde...\",\n                \"auth\": \"abc123...\"\n            }},\n        data=\"Mary had a little lamb, with a nice mint jelly\",\n        vapid_private_key=\"path/to/vapid_private.pem\",\n        vapid_claims={\n                \"sub\": \"mailto:YourNameHere@example.org\",\n            }\n    )\nexcept WebPushException as ex:\n    print(\"I'm sorry, Dave, but I can't do that: {}\", repr(ex))\n    # Mozilla returns additional information in the body of the response.\n    if ex.response and ex.response.json():\n        extra = ex.response.json()\n        print(\"Remote service replied with a {}:{}, {}\",\n              extra.code,\n              extra.errno,\n              extra.message\n              )\n```\n\n### Methods\n\nIf you expect to resend to the same recipient, or have more needs than just sending data quickly, you\ncan pass just `wp = WebPusher(subscription_info)`. This will return a `WebPusher` object.\n\nThe following methods are available:\n\n#### `.send(data, headers={}, ttl=0, gcm_key=\"\", reg_id=\"\", content_encoding=\"aes128gcm\", curl=False, timeout=None)`\n\nSend the data using additional parameters. On error, returns a `WebPushException`\n\n##### Parameters\n\n_data_ Binary string of data to send\n\n_headers_ A `dict` containing any additional headers to send\n\n_ttl_ Message Time To Live on Push Server waiting for the client to reconnect (in seconds)\n\n_gcm_key_ Google Cloud Messaging key (if using the older GCM push system) This is the API key obtained from the Google\nDeveloper Console.\n\n_reg_id_ Google Cloud Messaging registration ID (will be extracted from endpoint if not specified)\n\n_content_encoding_ ECE content encoding type (defaults to \"aes128gcm\")\n\n_curl_ Do not execute the POST, but return as a `curl` command. This will write the encrypted content to a local file\nnamed `encrpypted.data`. This command is meant to be used for debugging purposes.\n\n_timeout_ timeout for requests POST query.\nSee [requests documentation](http://docs.python-requests.org/en/master/user/quickstart/#timeouts).\n\n##### Example\n\nto send from Chrome using the old GCM mode:\n\n```python\nWebPusher(subscription_info).send(data, headers, ttl, gcm_key)\n```\n\n#### `.encode(data, content_encoding=\"aes128gcm\")`\n\nEncode the `data` for future use. On error, returns a `WebPushException`\n\n##### Parameters\n\n_data_ Binary string of data to send\n\n_content_encoding_ ECE content encoding type (defaults to \"aes128gcm\")\n\n*Note* This will return a `NoData` exception if the data is not present or empty. It is completely\nvalid to send a WebPush notification with no data, but encoding is a no-op in that case. Best not\nto call it if you don't have data.\n\n##### Example\n\n```python\nencoded_data = WebPush(subscription_info).encode(data)\n```\n\n## Stand Alone Webpush\n\nIf you're not really into coding your own solution, there's also a \"stand-alone\" `pywebpush` command in the\n./bin directory.\n\nThis uses two files:\n\n- the _data_ file, which contains the message to send, in whatever form you like.\n- the _subscription info_ file, which contains the subscription information as JSON encoded data. This is usually returned by the Push `subscribe` method and looks something like:\n\n```json\n{\n  \"endpoint\": \"https://push...\",\n  \"keys\": {\n    \"auth\": \"ab01...\",\n    \"p256dh\": \"aa02...\"\n  }\n}\n```\n\nIf you're interested in just testing your applications WebPush interface, you could use the Command Line:\n\n```bash\n./bin/pywebpush --data stuff_to_send.data --info subscription.info\n```\n\nwhich will encrypt and send the contents of `stuff_to_send.data`.\n\nSee `./bin/pywebpush --help` for available commands and options.\n",
    "bugtrack_url": null,
    "license": "Mozilla Public License Version 2.0 ==================================  1. Definitions --------------  1.1. \"Contributor\" means each individual or legal entity that creates, contributes to the creation of, or owns Covered Software.  1.2. \"Contributor Version\" means the combination of the Contributions of others (if any) used by a Contributor and that particular Contributor's Contribution.  1.3. \"Contribution\" means Covered Software of a particular Contributor.  1.4. \"Covered Software\" means Source Code Form to which the initial Contributor has attached the notice in Exhibit A, the Executable Form of such Source Code Form, and Modifications of such Source Code Form, in each case including portions thereof.  1.5. \"Incompatible With Secondary Licenses\" means  (a) that the initial Contributor has attached the notice described in Exhibit B to the Covered Software; or  (b) that the Covered Software was made available under the terms of version 1.1 or earlier of the License, but not also under the terms of a Secondary License.  1.6. \"Executable Form\" means any form of the work other than Source Code Form.  1.7. \"Larger Work\" means a work that combines Covered Software with other material, in a separate file or files, that is not Covered Software.  1.8. \"License\" means this document.  1.9. \"Licensable\" means having the right to grant, to the maximum extent possible, whether at the time of the initial grant or subsequently, any and all of the rights conveyed by this License.  1.10. \"Modifications\" means any of the following:  (a) any file in Source Code Form that results from an addition to, deletion from, or modification of the contents of Covered Software; or  (b) any new file in Source Code Form that contains any Covered Software.  1.11. \"Patent Claims\" of a Contributor means any patent claim(s), including without limitation, method, process, and apparatus claims, in any patent Licensable by such Contributor that would be infringed, but for the grant of the License, by the making, using, selling, offering for sale, having made, import, or transfer of either its Contributions or its Contributor Version.  1.12. \"Secondary License\" means either the GNU General Public License, Version 2.0, the GNU Lesser General Public License, Version 2.1, the GNU Affero General Public License, Version 3.0, or any later versions of those licenses.  1.13. \"Source Code Form\" means the form of the work preferred for making modifications.  1.14. \"You\" (or \"Your\") means an individual or a legal entity exercising rights under this License. For legal entities, \"You\" includes any entity that controls, is controlled by, or is under common control with You. For purposes of this definition, \"control\" means (a) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (b) ownership of more than fifty percent (50%) of the outstanding shares or beneficial ownership of such entity.  2. License Grants and Conditions --------------------------------  2.1. Grants  Each Contributor hereby grants You a world-wide, royalty-free, non-exclusive license:  (a) under intellectual property rights (other than patent or trademark) Licensable by such Contributor to use, reproduce, make available, modify, display, perform, distribute, and otherwise exploit its Contributions, either on an unmodified basis, with Modifications, or as part of a Larger Work; and  (b) under Patent Claims of such Contributor to make, use, sell, offer for sale, have made, import, and otherwise transfer either its Contributions or its Contributor Version.  2.2. Effective Date  The licenses granted in Section 2.1 with respect to any Contribution become effective for each Contribution on the date the Contributor first distributes such Contribution.  2.3. Limitations on Grant Scope  The licenses granted in this Section 2 are the only rights granted under this License. No additional rights or licenses will be implied from the distribution or licensing of Covered Software under this License. Notwithstanding Section 2.1(b) above, no patent license is granted by a Contributor:  (a) for any code that a Contributor has removed from Covered Software; or  (b) for infringements caused by: (i) Your and any other third party's modifications of Covered Software, or (ii) the combination of its Contributions with other software (except as part of its Contributor Version); or  (c) under Patent Claims infringed by Covered Software in the absence of its Contributions.  This License does not grant any rights in the trademarks, service marks, or logos of any Contributor (except as may be necessary to comply with the notice requirements in Section 3.4).  2.4. Subsequent Licenses  No Contributor makes additional grants as a result of Your choice to distribute the Covered Software under a subsequent version of this License (see Section 10.2) or under the terms of a Secondary License (if permitted under the terms of Section 3.3).  2.5. Representation  Each Contributor represents that the Contributor believes its Contributions are its original creation(s) or it has sufficient rights to grant the rights to its Contributions conveyed by this License.  2.6. Fair Use  This License is not intended to limit any rights You have under applicable copyright doctrines of fair use, fair dealing, or other equivalents.  2.7. Conditions  Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in Section 2.1.  3. Responsibilities -------------------  3.1. Distribution of Source Form  All distribution of Covered Software in Source Code Form, including any Modifications that You create or to which You contribute, must be under the terms of this License. You must inform recipients that the Source Code Form of the Covered Software is governed by the terms of this License, and how they can obtain a copy of this License. You may not attempt to alter or restrict the recipients' rights in the Source Code Form.  3.2. Distribution of Executable Form  If You distribute Covered Software in Executable Form then:  (a) such Covered Software must also be made available in Source Code Form, as described in Section 3.1, and You must inform recipients of the Executable Form how they can obtain a copy of such Source Code Form by reasonable means in a timely manner, at a charge no more than the cost of distribution to the recipient; and  (b) You may distribute such Executable Form under the terms of this License, or sublicense it under different terms, provided that the license for the Executable Form does not attempt to limit or alter the recipients' rights in the Source Code Form under this License.  3.3. Distribution of a Larger Work  You may create and distribute a Larger Work under terms of Your choice, provided that You also comply with the requirements of this License for the Covered Software. If the Larger Work is a combination of Covered Software with a work governed by one or more Secondary Licenses, and the Covered Software is not Incompatible With Secondary Licenses, this License permits You to additionally distribute such Covered Software under the terms of such Secondary License(s), so that the recipient of the Larger Work may, at their option, further distribute the Covered Software under the terms of either this License or such Secondary License(s).  3.4. Notices  You may not remove or alter the substance of any license notices (including copyright notices, patent notices, disclaimers of warranty, or limitations of liability) contained within the Source Code Form of the Covered Software, except that You may alter any license notices to the extent required to remedy known factual inaccuracies.  3.5. Application of Additional Terms  You may choose to offer, and to charge a fee for, warranty, support, indemnity or liability obligations to one or more recipients of Covered Software. However, You may do so only on Your own behalf, and not on behalf of any Contributor. You must make it absolutely clear that any such warranty, support, indemnity, or liability obligation is offered by You alone, and You hereby agree to indemnify every Contributor for any liability incurred by such Contributor as a result of warranty, support, indemnity or liability terms You offer. You may include additional disclaimers of warranty and limitations of liability specific to any jurisdiction.  4. Inability to Comply Due to Statute or Regulation ---------------------------------------------------  If it is impossible for You to comply with any of the terms of this License with respect to some or all of the Covered Software due to statute, judicial order, or regulation then You must: (a) comply with the terms of this License to the maximum extent possible; and (b) describe the limitations and the code they affect. Such description must be placed in a text file included with all distributions of the Covered Software under this License. Except to the extent prohibited by statute or regulation, such description must be sufficiently detailed for a recipient of ordinary skill to be able to understand it.  5. Termination --------------  5.1. The rights granted under this License will terminate automatically if You fail to comply with any of its terms. However, if You become compliant, then the rights granted under this License from a particular Contributor are reinstated (a) provisionally, unless and until such Contributor explicitly and finally terminates Your grants, and (b) on an ongoing basis, if such Contributor fails to notify You of the non-compliance by some reasonable means prior to 60 days after You have come back into compliance. Moreover, Your grants from a particular Contributor are reinstated on an ongoing basis if such Contributor notifies You of the non-compliance by some reasonable means, this is the first time You have received notice of non-compliance with this License from such Contributor, and You become compliant prior to 30 days after Your receipt of the notice.  5.2. If You initiate litigation against any entity by asserting a patent infringement claim (excluding declaratory judgment actions, counter-claims, and cross-claims) alleging that a Contributor Version directly or indirectly infringes any patent, then the rights granted to You by any and all Contributors for the Covered Software under Section 2.1 of this License shall terminate.  5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user license agreements (excluding distributors and resellers) which have been validly granted by You or Your distributors under this License prior to termination shall survive termination.  ************************************************************************ *                                                                      * *  6. Disclaimer of Warranty                                           * *  -------------------------                                           * *                                                                      * *  Covered Software is provided under this License on an \"as is\"       * *  basis, without warranty of any kind, either expressed, implied, or  * *  statutory, including, without limitation, warranties that the       * *  Covered Software is free of defects, merchantable, fit for a        * *  particular purpose or non-infringing. The entire risk as to the     * *  quality and performance of the Covered Software is with You.        * *  Should any Covered Software prove defective in any respect, You     * *  (not any Contributor) assume the cost of any necessary servicing,   * *  repair, or correction. This disclaimer of warranty constitutes an   * *  essential part of this License. No use of any Covered Software is   * *  authorized under this License except under this disclaimer.         * *                                                                      * ************************************************************************  ************************************************************************ *                                                                      * *  7. Limitation of Liability                                          * *  --------------------------                                          * *                                                                      * *  Under no circumstances and under no legal theory, whether tort      * *  (including negligence), contract, or otherwise, shall any           * *  Contributor, or anyone who distributes Covered Software as          * *  permitted above, be liable to You for any direct, indirect,         * *  special, incidental, or consequential damages of any character      * *  including, without limitation, damages for lost profits, loss of    * *  goodwill, work stoppage, computer failure or malfunction, or any    * *  and all other commercial damages or losses, even if such party      * *  shall have been informed of the possibility of such damages. This   * *  limitation of liability shall not apply to liability for death or   * *  personal injury resulting from such party's negligence to the       * *  extent applicable law prohibits such limitation. Some               * *  jurisdictions do not allow the exclusion or limitation of           * *  incidental or consequential damages, so this exclusion and          * *  limitation may not apply to You.                                    * *                                                                      * ************************************************************************  8. Litigation -------------  Any litigation relating to this License may be brought only in the courts of a jurisdiction where the defendant maintains its principal place of business and such litigation shall be governed by laws of that jurisdiction, without reference to its conflict-of-law provisions. Nothing in this Section shall prevent a party's ability to bring cross-claims or counter-claims.  9. Miscellaneous ----------------  This License represents the complete agreement concerning the subject matter hereof. If any provision of this License is held to be unenforceable, such provision shall be reformed only to the extent necessary to make it enforceable. Any law or regulation which provides that the language of a contract shall be construed against the drafter shall not be used to construe this License against a Contributor.  10. Versions of the License ---------------------------  10.1. New Versions  Mozilla Foundation is the license steward. Except as provided in Section 10.3, no one other than the license steward has the right to modify or publish new versions of this License. Each version will be given a distinguishing version number.  10.2. Effect of New Versions  You may distribute the Covered Software under the terms of the version of the License under which You originally received the Covered Software, or under the terms of any subsequent version published by the license steward.  10.3. Modified Versions  If you create software not governed by this License, and you want to create a new license for such software, you may create and use a modified version of this License if you rename the license and remove any references to the name of the license steward (except to note that such modified license differs from this License).  10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses  If You choose to distribute Source Code Form that is Incompatible With Secondary Licenses under the terms of this version of the License, the notice described in Exhibit B of this License must be attached.  Exhibit A - Source Code Form License Notice -------------------------------------------  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/.  If it is not possible or desirable to put the notice in a particular file, then You may include the notice in a location (such as a LICENSE file in a relevant directory) where a recipient would be likely to look for such a notice.  You may add additional accurate notices of copyright ownership.  Exhibit B - \"Incompatible With Secondary Licenses\" Notice ---------------------------------------------------------  This Source Code Form is \"Incompatible With Secondary Licenses\", as defined by the Mozilla Public License, v. 2.0. ",
    "summary": "WebPush publication library",
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