Generate a credential description based on the context.
For example, if we want a password for https://example.com/foo.git, we might generate the following credential description (dont forget the blank line at the end; it tells git credential that the application finished feeding all the information it has):
protocol=https host=example.com path=foo.git
2. Ask git-credential to give us a username and password for this description. This is done by running git credential fill, feeding the description from step (1) to its standard input. The complete credential description (including the credential per se, i.e. the login and password) will be produced on standard output, like:
protocol=https host=example.com username=bob password=secr3t
In most cases, this means the attributes given in the input will be repeated in the output, but Git may also modify the credential description, for example by removing the path attribute when the protocol is HTTP(s) and credential.useHttpPath is false.
If the git credential knew about the password, this step may not have involved the user actually typing this password (the user may have typed a password to unlock the keychain instead, or no user interaction was done if the keychain was already unlocked) before it returned password=secr3t.
3. Use the credential (e.g., access the URL with the username and password from step (2)), and see if its accepted.
4. Report on the success or failure of the password. If the credential allowed the operation to complete successfully, then it can be marked with an "approve" action to tell git credential to reuse it in its next invocation. If the credential was rejected during the operation, use the "reject" action so that git credential will ask for a new password in its next invocation. In either case, git credential should be fed with the credential description obtained from step (2) (which also contain the ones provided in step (1)).
git credential reads and/or writes (depending on the action used) credential information in its standard input/output. This information can correspond either to keys for which git credential will obtain the login/password information (e.g. host, protocol, path), or to the actual credential data to be obtained (login/password).
The credential is split into a set of named attributes, with one attribute per line. Each attribute is specified by a key-value pair, separated by an = (equals) sign, followed by a newline. The key may contain any bytes except =, newline, or NUL. The value may contain any bytes except newline or NUL. In both cases, all bytes are treated as-is (i.e., there is no quoting, and one cannot transmit a value with newline or NUL in it). The list of attributes is terminated by a blank line or end-of-file. Git understands the following attributes:
protocolThe protocol over which the credential will be used (e.g., https).
hostThe remote hostname for a network credential.
pathThe path with which the credential will be used. E.g., for accessing a remote https repository, this will be the repositorys path on the server.
usernameThe credentials username, if we already have one (e.g., from a URL, from the user, or from a previously run helper).
passwordThe credentials password, if we are asking it to be stored.
urlWhen this special attribute is read by git credential, the value is parsed as a URL and treated as if its constituent parts were read (e.g., url=https://example.com would behave as if protocol=https and host=example.com had been provided). This can help callers avoid parsing URLs themselves. Note that any components which are missing from the URL (e.g., there is no username in the example above) will be set to empty; if you want to provide a URL and override some attributes, provide the URL attribute first, followed by any overrides.
1. the Git credential API git-htmldocs/technical/api-credentials.html
|Git 2&.7&.4||GIT-CREDENTIAL (1)||03/17/2016|