docs/dyn/digitalassetlinks_v1.statements.html

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<h1><a href="digitalassetlinks_v1.html">Digital Asset Links API</a> . <a href="digitalassetlinks_v1.statements.html">statements</a></h1>
<h2>Instance Methods</h2>
<p class="toc_element">
  <code><a href="#list">list(source_androidApp_packageName=None, relation=None, source_androidApp_certificate_sha256Fingerprint=None, SHA256=None, x__xgafv=None, source_web_site=None)</a></code></p>
<p class="firstline">Retrieves a list of all statements from a given source that match the</p>
<h3>Method Details</h3>
<div class="method">
    <code class="details" id="list">list(source_androidApp_packageName=None, relation=None, source_androidApp_certificate_sha256Fingerprint=None, SHA256=None, x__xgafv=None, source_web_site=None)</code>
  <pre>Retrieves a list of all statements from a given source that match the
specified target and statement string.

The API guarantees that all statements with secure source assets, such as
HTTPS websites or Android apps, have been made in a secure way by the owner
of those assets, as described in the [Digital Asset Links technical design
specification](https://github.com/google/digitalassetlinks/blob/master/well-known/details.md).
Specifically, you should consider that for insecure websites (that is,
where the URL starts with `http://` instead of `https://`), this guarantee
cannot be made.

The `List` command is most useful in cases where the API client wants to
know all the ways in which two assets are related, or enumerate all the
relationships from a particular source asset.  Example: a feature that
helps users navigate to related items.  When a mobile app is running on a
device, the feature would make it easy to navigate to the corresponding web
site or Google+ profile.

Args:
  source_androidApp_packageName: string, Android App assets are naturally identified by their Java package name.
For example, the Google Maps app uses the package name
`com.google.android.apps.maps`.
REQUIRED
  relation: string, Use only associations that match the specified relation.

See the [`Statement`](#Statement) message for a detailed definition of
relation strings.

For a query to match a statement, one of the following must be true:

*    both the query's and the statement's relation strings match exactly,
     or
*    the query's relation string is empty or missing.

Example: A query with relation `delegate_permission/common.handle_all_urls`
matches an asset link with relation
`delegate_permission/common.handle_all_urls`.
  source_androidApp_certificate_sha256Fingerprint: string, The uppercase SHA-265 fingerprint of the certificate.  From the PEM
 certificate, it can be acquired like this:

    $ keytool -printcert -file $CERTFILE | grep SHA256:
    SHA256: 14:6D:E9:83:C5:73:06:50:D8:EE:B9:95:2F:34:FC:64:16:A0:83: \
        42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:44:E5

or like this:

    $ openssl x509 -in $CERTFILE -noout -fingerprint -sha256
    SHA256 Fingerprint=14:6D:E9:83:C5:73:06:50:D8:EE:B9:95:2F:34:FC:64: \
        16:A0:83:42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:44:E5

In this example, the contents of this field would be `14:6D:E9:83:C5:73:
06:50:D8:EE:B9:95:2F:34:FC:64:16:A0:83:42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:
44:E5`.

If these tools are not available to you, you can convert the PEM
certificate into the DER format, compute the SHA-256 hash of that string
and represent the result as a hexstring (that is, uppercase hexadecimal
representations of each octet, separated by colons).
  x__xgafv: string, V1 error format.
    Allowed values
      1 - v1 error format
      2 - v2 error format
  source_web_site: string, Web assets are identified by a URL that contains only the scheme, hostname
and port parts.  The format is

    http[s]://<hostname>[:<port>]

Hostnames must be fully qualified: they must end in a single period
("`.`").

Only the schemes "http" and "https" are currently allowed.

Port numbers are given as a decimal number, and they must be omitted if the
standard port numbers are used: 80 for http and 443 for https.

We call this limited URL the "site".  All URLs that share the same scheme,
hostname and port are considered to be a part of the site and thus belong
to the web asset.

Example: the asset with the site `https://www.google.com` contains all
these URLs:

  *   `https://www.google.com/`
  *   `https://www.google.com:443/`
  *   `https://www.google.com/foo`
  *   `https://www.google.com/foo?bar`
  *   `https://www.google.com/foo#bar`
  *   `https://user@password:www.google.com/`

But it does not contain these URLs:

  *   `http://www.google.com/`       (wrong scheme)
  *   `https://google.com/`          (hostname does not match)
  *   `https://www.google.com:444/`  (port does not match)
REQUIRED

Returns:
  An object of the form:

    { # Response message for the List call.
    "errorCode": [ # Error codes that describe the result of the List operation.
      "A String",
    ],
    "statements": [ # A list of all the matching statements that have been found.
      { # Describes a reliable statement that has been made about the relationship
          # between a source asset and a target asset.
          #
          # Statements are always made by the source asset, either directly or by
          # delegating to a statement list that is stored elsewhere.
          #
          # For more detailed definitions of statements and assets, please refer
          # to our [API documentation landing
          # page](/digital-asset-links/v1/getting-started).
        "source": { # Uniquely identifies an asset. # Every statement has a source asset.
            # REQUIRED
            #
            # A digital asset is an identifiable and addressable online entity that
            # typically provides some service or content.  Examples of assets are websites,
            # Android apps, Twitter feeds, and Plus Pages.
          "web": { # Describes a web asset. # Set if this is a web asset.
            "site": "A String", # Web assets are identified by a URL that contains only the scheme, hostname
                # and port parts.  The format is
                #
                #     http[s]://<hostname>[:<port>]
                #
                # Hostnames must be fully qualified: they must end in a single period
                # ("`.`").
                #
                # Only the schemes "http" and "https" are currently allowed.
                #
                # Port numbers are given as a decimal number, and they must be omitted if the
                # standard port numbers are used: 80 for http and 443 for https.
                #
                # We call this limited URL the "site".  All URLs that share the same scheme,
                # hostname and port are considered to be a part of the site and thus belong
                # to the web asset.
                #
                # Example: the asset with the site `https://www.google.com` contains all
                # these URLs:
                #
                #   *   `https://www.google.com/`
                #   *   `https://www.google.com:443/`
                #   *   `https://www.google.com/foo`
                #   *   `https://www.google.com/foo?bar`
                #   *   `https://www.google.com/foo#bar`
                #   *   `https://user@password:www.google.com/`
                #
                # But it does not contain these URLs:
                #
                #   *   `http://www.google.com/`       (wrong scheme)
                #   *   `https://google.com/`          (hostname does not match)
                #   *   `https://www.google.com:444/`  (port does not match)
                # REQUIRED
          },
          "androidApp": { # Describes an android app asset. # Set if this is an Android App asset.
            "packageName": "A String", # Android App assets are naturally identified by their Java package name.
                # For example, the Google Maps app uses the package name
                # `com.google.android.apps.maps`.
                # REQUIRED
            "certificate": { # Describes an X509 certificate. # Because there is no global enforcement of package name uniqueness, we also
                # require a signing certificate, which in combination with the package name
                # uniquely identifies an app.
                #
                # Some apps' signing keys are rotated, so they may be signed by different
                # keys over time.  We treat these as distinct assets, since we use (package
                # name, cert) as the unique ID.  This should not normally pose any problems
                # as both versions of the app will make the same or similar statements.
                # Other assets making statements about the app will have to be updated when a
                # key is rotated, however.
                #
                # (Note that the syntaxes for publishing and querying for statements contain
                # syntactic sugar to easily let you specify apps that are known by multiple
                # certificates.)
                # REQUIRED
              "sha256Fingerprint": "A String", # The uppercase SHA-265 fingerprint of the certificate.  From the PEM
                  #  certificate, it can be acquired like this:
                  #
                  #     $ keytool -printcert -file $CERTFILE | grep SHA256:
                  #     SHA256: 14:6D:E9:83:C5:73:06:50:D8:EE:B9:95:2F:34:FC:64:16:A0:83: \
                  #         42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:44:E5
                  #
                  # or like this:
                  #
                  #     $ openssl x509 -in $CERTFILE -noout -fingerprint -sha256
                  #     SHA256 Fingerprint=14:6D:E9:83:C5:73:06:50:D8:EE:B9:95:2F:34:FC:64: \
                  #         16:A0:83:42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:44:E5
                  #
                  # In this example, the contents of this field would be `14:6D:E9:83:C5:73:
                  # 06:50:D8:EE:B9:95:2F:34:FC:64:16:A0:83:42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:
                  # 44:E5`.
                  #
                  # If these tools are not available to you, you can convert the PEM
                  # certificate into the DER format, compute the SHA-256 hash of that string
                  # and represent the result as a hexstring (that is, uppercase hexadecimal
                  # representations of each octet, separated by colons).
            },
          },
        },
        "relation": "A String", # The relation identifies the use of the statement as intended by the source
            # asset's owner (that is, the person or entity who issued the statement).
            # Every complete statement has a relation.
            #
            # We identify relations with strings of the format `<kind>/<detail>`, where
            # `<kind>` must be one of a set of pre-defined purpose categories, and
            # `<detail>` is a free-form lowercase alphanumeric string that describes the
            # specific use case of the statement.
            #
            # Refer to [our API documentation](/digital-asset-links/v1/relation-strings)
            # for the current list of supported relations.
            #
            # Example: `delegate_permission/common.handle_all_urls`
            # REQUIRED
        "target": { # Uniquely identifies an asset. # Every statement has a target asset.
            # REQUIRED
            #
            # A digital asset is an identifiable and addressable online entity that
            # typically provides some service or content.  Examples of assets are websites,
            # Android apps, Twitter feeds, and Plus Pages.
          "web": { # Describes a web asset. # Set if this is a web asset.
            "site": "A String", # Web assets are identified by a URL that contains only the scheme, hostname
                # and port parts.  The format is
                #
                #     http[s]://<hostname>[:<port>]
                #
                # Hostnames must be fully qualified: they must end in a single period
                # ("`.`").
                #
                # Only the schemes "http" and "https" are currently allowed.
                #
                # Port numbers are given as a decimal number, and they must be omitted if the
                # standard port numbers are used: 80 for http and 443 for https.
                #
                # We call this limited URL the "site".  All URLs that share the same scheme,
                # hostname and port are considered to be a part of the site and thus belong
                # to the web asset.
                #
                # Example: the asset with the site `https://www.google.com` contains all
                # these URLs:
                #
                #   *   `https://www.google.com/`
                #   *   `https://www.google.com:443/`
                #   *   `https://www.google.com/foo`
                #   *   `https://www.google.com/foo?bar`
                #   *   `https://www.google.com/foo#bar`
                #   *   `https://user@password:www.google.com/`
                #
                # But it does not contain these URLs:
                #
                #   *   `http://www.google.com/`       (wrong scheme)
                #   *   `https://google.com/`          (hostname does not match)
                #   *   `https://www.google.com:444/`  (port does not match)
                # REQUIRED
          },
          "androidApp": { # Describes an android app asset. # Set if this is an Android App asset.
            "packageName": "A String", # Android App assets are naturally identified by their Java package name.
                # For example, the Google Maps app uses the package name
                # `com.google.android.apps.maps`.
                # REQUIRED
            "certificate": { # Describes an X509 certificate. # Because there is no global enforcement of package name uniqueness, we also
                # require a signing certificate, which in combination with the package name
                # uniquely identifies an app.
                #
                # Some apps' signing keys are rotated, so they may be signed by different
                # keys over time.  We treat these as distinct assets, since we use (package
                # name, cert) as the unique ID.  This should not normally pose any problems
                # as both versions of the app will make the same or similar statements.
                # Other assets making statements about the app will have to be updated when a
                # key is rotated, however.
                #
                # (Note that the syntaxes for publishing and querying for statements contain
                # syntactic sugar to easily let you specify apps that are known by multiple
                # certificates.)
                # REQUIRED
              "sha256Fingerprint": "A String", # The uppercase SHA-265 fingerprint of the certificate.  From the PEM
                  #  certificate, it can be acquired like this:
                  #
                  #     $ keytool -printcert -file $CERTFILE | grep SHA256:
                  #     SHA256: 14:6D:E9:83:C5:73:06:50:D8:EE:B9:95:2F:34:FC:64:16:A0:83: \
                  #         42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:44:E5
                  #
                  # or like this:
                  #
                  #     $ openssl x509 -in $CERTFILE -noout -fingerprint -sha256
                  #     SHA256 Fingerprint=14:6D:E9:83:C5:73:06:50:D8:EE:B9:95:2F:34:FC:64: \
                  #         16:A0:83:42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:44:E5
                  #
                  # In this example, the contents of this field would be `14:6D:E9:83:C5:73:
                  # 06:50:D8:EE:B9:95:2F:34:FC:64:16:A0:83:42:E6:1D:BE:A8:8A:04:96:B2:3F:CF:
                  # 44:E5`.
                  #
                  # If these tools are not available to you, you can convert the PEM
                  # certificate into the DER format, compute the SHA-256 hash of that string
                  # and represent the result as a hexstring (that is, uppercase hexadecimal
                  # representations of each octet, separated by colons).
            },
          },
        },
      },
    ],
    "maxAge": "A String", # From serving time, how much longer the response should be considered valid
        # barring further updates.
        # REQUIRED
    "debugString": "A String", # Human-readable message containing information intended to help end users
        # understand, reproduce and debug the result.
        #
        #
        # The message will be in English and we are currently not planning to offer
        # any translations.
        #
        # Please note that no guarantees are made about the contents or format of
        # this string.  Any aspect of it may be subject to change without notice.
        # You should not attempt to programmatically parse this data.  For
        # programmatic access, use the error_code field below.
  }</pre>
</div>

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