Android support repository download error 504

When debugging, you may want to read the MediaPipe log. If you set true to Glog. Logtostderr before calling Glog. Initialize , MediaPipe will output logs to standard error, so you can check them from Editor.

You can set various Glog flags as well. Skip to content. Star Branches Tags. Could not load branches. Could not load tags. Latest commit.

Git stats commits. Failed to load latest commit information. Oct 12, Nov 22, Given one or more class names and account credentials, it obtains week and class names from the lectures page, and then downloads the related materials into appropriately named files and directories. Why is this helpful? A utility like wget can work, but has the following limitations:. Browser extensions like DownloadThemAll is another possibility, but coursera-dl provides more features such as appropriately named files.

This work was originally inspired in part by youtube-dl by which I've downloaded many other good videos such as those from Khan Academy. We do not encourage any use that violates their Terms Of Use. A relevant excerpt:. You may download material from the Sites only for your own personal, non-commercial use.

You may not otherwise copy, reproduce, retransmit, distribute, publish, commercially exploit or otherwise transfer any material, nor may you modify or create derivatives works of the material. As of February of , we test automatically the execution of the program with Python versions 2. Note: We strongly recommend that you use a Python 3 interpreter 3. On any operating system, ensure that the Python executable location is added to your PATH environment variable and, once you have the dependencies installed see next section , for a basic usage, you will need to invoke the script from the main directory of the project and prepend it with the word python.

You can also use more advanced features of the program by looking at the "Running the script" section of this document. Note: You must already have manually agreed to the Honor of Code of the particular courses that you want to use with coursera-dl. From a command line preferably, from a virtual environment , simply issue the command:. This will download the latest released version of the program from the Python Package Index PyPI along with all the necessary dependencies.

At this point, you should be ready to start using it. If this does not work, because your Python 2 version is too old e. Note 1: We strongly recommend that you don't install the package globally on your machine i.

Prefer to use the option --user to pip install , if you need can. Note 2: As already mentioned, we strongly recommend that you use a new Python 3 interpreter e. If you must use Python 2, be sure that you have at least Python 2. Otherwise, you can still use coursera-dl , but you will have to install the extra package ndg-httpsclient , which may involve compilation at least on Linux systems.

We strongly recommend that you consider installing Python packages with pip , as in it is the current preferred method , unless directed otherwise by one of the project members for instance, when testing or debugging a new feature or using the source code directly from our git repository. If you are using pip , you can directly install all the dependencies from the requirements file using pip install -r requirements.

We strongly recommend that you install coursera-dl and all its dependencies in a way that does not interfere with the rest of your Python installation. This is accomplished by the creation of a virtual environment , or "virtualenv". We are working on streamlining this whole process so that it is as simple as possible, but to support older versions of Python and to cope with Coursera disabling SSLv3, we have to take a few extra steps.

In any case, it is highly recommended that you always install the latest version of the Python interpreter that you can. AUR package: coursera-dl. Warning: This method is not recommended unless you have experience working with multiple Python environments. You can use the pip program to install the dependencies on your own. They are all listed in the requirements. The second line above should only be needed if you intend to help with development and help is always welcome or if a maintainer of the project asks you to install extra packages for debugging purposes.

Once again, before filing bug reports, if you installed the dependencies on your own, please check that the versions of your modules are at least those listed in the requirements. In Keymaster 1, there was no way for apps or remote servers to reliably verify if this was the case. The keystore daemon loaded the available keymaster HAL and believed whatever the HAL said with respect to hardware backing of keys.

To remedy this, Keymaster introduced key attestation in Android 7. Key attestation aims to provide a way to strongly determine if an asymmetric key pair is hardware-backed, what the properties of the key are, and what constraints are applied to its usage. ID attestation allows the device to provide proof of its hardware identifiers, such as serial number or IMEI. Key attestation To support key attestation, Android 7. The attestKey method is considered a public key operation on the attested key, because it can be called at any time and doesn't need to meet authorization constraints.

For example, if the attested key needs user authentication for use, an attestation can be generated without user authentication. The attestation certificate is a standard X. The attestation certificate contains the fields in the table below and can't contain any additional fields.

Some fields specify a fixed field value. CTS tests validate that the certificate content is exactly as defined. The attestation extension contains a complete description of the keymaster authorizations associated with the key, in a structure that directly corresponds to the authorization lists as used in Android and the keymaster HAL. Each tag in an authorization list is represented by an ASN. The keymasterVersion and attestationChallenge fields are identified positionally, rather than by tag, so the tags in the encoded form only specify field type.

The remaining fields are implicitly tagged as specified in the schema. AuthorizationList fields are all optional and are identified by keymaster tag value, with the type bits masked out.

Explicit tagging is used so the fields also contain a tag indicating their ASN. For details on each field's values, see types. The values of verifiedBootState have the following meanings:. The Unique ID is a bit value that identifies the device, but only for a limited period of time. The value is computed with:. Android 8. Although an optional feature, it is highly recommended that all Keymaster 3 implementations provide support for it because being able to prove the device's identity enables use cases such as true zero-touch remote configuration to be more secure because the remote side can be certain it is talking to the right device, not a device spoofing its identity.

ID attestation works by creating copies of the device's hardware identifiers that only the Trusted Execution Environment TEE can access before the device leaves the factory. A user may unlock the device's bootloader and change the system software and the identifiers reported by the Android frameworks.

The copies of the identifiers held by the TEE cannot be manipulated in this way, ensuring that device ID attestation will only ever attest to the device's original hardware identifiers thereby thwarting spoofing attempts. The main API surface for ID attestation builds on top of the existing key attestation mechanism introduced with Keymaster 2.

When requesting an attestation certificate for a key held by keymaster, the caller may request that the device's hardware identifiers be included in the attestation certificate's metadata. If the key is held in the TEE, the certificate will chain back to a known root of trust. The recipient of such a certificate can verify that the certificate and its contents, including the hardware identifiers, were written by the TEE.

When asked to include hardware identifiers in the attestation certificate, the TEE attests only to the identifiers held in its storage, as populated on the factory floor. To create an implementation that has the properties listed above, store the ID-derived values in the following construction S.

Do not store other copies of the ID values, excepting the normal places in the system, which a device owner may modify by rooting:. We invite you to come explore the community, join the groups of interest to you, and participate in the discussions that are ongoing.

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