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 735 <body class="manpage">
 736 <div id="header">
 737 <h1>
 738 git-credential(1) Manual Page
 739 </h1>
 740 <h2>NAME</h2>
 741 <div class="sectionbody">
 742 <p>git-credential -
 743    Retrieve and store user credentials
 744 </p>
 745 </div>
 746 </div>
 747 <div id="content">
 748 <div class="sect1">
 749 <h2 id="_synopsis">SYNOPSIS</h2>
 750 <div class="sectionbody">
 751 <div class="listingblock">
 752 <div class="content">
 753 <pre><code>'git credential' (fill|approve|reject)</code></pre>
 754 </div></div>
 755 </div>
 756 </div>
 757 <div class="sect1">
 758 <h2 id="_description">DESCRIPTION</h2>
 759 <div class="sectionbody">
 760 <div class="paragraph"><p>Git has an internal interface for storing and retrieving credentials
 761 from system-specific helpers, as well as prompting the user for
 762 usernames and passwords. The git-credential command exposes this
 763 interface to scripts which may want to retrieve, store, or prompt for
 764 credentials in the same manner as Git. The design of this scriptable
 765 interface models the internal C API; see credential.h for more
 766 background on the concepts.</p></div>
 767 <div class="paragraph"><p>git-credential takes an "action" option on the command-line (one of
 768 <code>fill</code>, <code>approve</code>, or <code>reject</code>) and reads a credential description
 769 on stdin (see <a href="#IOFMT">INPUT/OUTPUT FORMAT</a>).</p></div>
 770 <div class="paragraph"><p>If the action is <code>fill</code>, git-credential will attempt to add "username"
 771 and "password" attributes to the description by reading config files,
 772 by contacting any configured credential helpers, or by prompting the
 773 user. The username and password attributes of the credential
 774 description are then printed to stdout together with the attributes
 775 already provided.</p></div>
 776 <div class="paragraph"><p>If the action is <code>approve</code>, git-credential will send the description
 777 to any configured credential helpers, which may store the credential
 778 for later use.</p></div>
 779 <div class="paragraph"><p>If the action is <code>reject</code>, git-credential will send the description to
 780 any configured credential helpers, which may erase any stored
 781 credentials matching the description.</p></div>
 782 <div class="paragraph"><p>If the action is <code>approve</code> or <code>reject</code>, no output should be emitted.</p></div>
 783 </div>
 784 </div>
 785 <div class="sect1">
 786 <h2 id="_typical_use_of_git_credential">TYPICAL USE OF GIT CREDENTIAL</h2>
 787 <div class="sectionbody">
 788 <div class="paragraph"><p>An application using git-credential will typically use <code>git
 789 credential</code> following these steps:</p></div>
 790 <div class="olist arabic"><ol class="arabic">
 791 <li>
 792 <p>
 793 Generate a credential description based on the context.
 794 </p>
 795 <div class="paragraph"><p>For example, if we want a password for
 796 <code>https://example.com/foo.git</code>, we might generate the following
 797 credential description (don&#8217;t forget the blank line at the end; it
 798 tells <code>git credential</code> that the application finished feeding all the
 799 information it has):</p></div>
 800 <div class="literalblock">
 801 <div class="content">
 802 <pre><code>protocol=https
 803 host=example.com
 804 path=foo.git</code></pre>
 805 </div></div>
 806 </li>
 807 <li>
 808 <p>
 809 Ask git-credential to give us a username and password for this
 810      description. This is done by running <code>git credential fill</code>,
 811      feeding the description from step (1) to its standard input. The complete
 812      credential description (including the credential per se, i.e. the
 813      login and password) will be produced on standard output, like:
 814 </p>
 815 <div class="literalblock">
 816 <div class="content">
 817 <pre><code>protocol=https
 818 host=example.com
 819 username=bob
 820 password=secr3t</code></pre>
 821 </div></div>
 822 <div class="paragraph"><p>In most cases, this means the attributes given in the input will be
 823 repeated in the output, but Git may also modify the credential
 824 description, for example by removing the <code>path</code> attribute when the
 825 protocol is HTTP(s) and <code>credential.useHttpPath</code> is false.</p></div>
 826 <div class="paragraph"><p>If the <code>git credential</code> knew about the password, this step may
 827 not have involved the user actually typing this password (the
 828 user may have typed a password to unlock the keychain instead,
 829 or no user interaction was done if the keychain was already
 830 unlocked) before it returned <code>password=secr3t</code>.</p></div>
 831 </li>
 832 <li>
 833 <p>
 834 Use the credential (e.g., access the URL with the username and
 835      password from step (2)), and see if it&#8217;s accepted.
 836 </p>
 837 </li>
 838 <li>
 839 <p>
 840 Report on the success or failure of the password. If the
 841      credential allowed the operation to complete successfully, then
 842      it can be marked with an "approve" action to tell <code>git
 843      credential</code> to reuse it in its next invocation. If the credential
 844      was rejected during the operation, use the "reject" action so
 845      that <code>git credential</code> will ask for a new password in its next
 846      invocation. In either case, <code>git credential</code> should be fed with
 847      the credential description obtained from step (2) (which also
 848      contains the fields provided in step (1)).
 849 </p>
 850 </li>
 851 </ol></div>
 852 </div>
 853 </div>
 854 <div class="sect1">
 855 <h2 id="IOFMT">INPUT/OUTPUT FORMAT</h2>
 856 <div class="sectionbody">
 857 <div class="paragraph"><p><code>git credential</code> reads and/or writes (depending on the action used)
 858 credential information in its standard input/output. This information
 859 can correspond either to keys for which <code>git credential</code> will obtain
 860 the login information (e.g. host, protocol, path), or to the actual
 861 credential data to be obtained (username/password).</p></div>
 862 <div class="paragraph"><p>The credential is split into a set of named attributes, with one
 863 attribute per line. Each attribute is specified by a key-value pair,
 864 separated by an <code>=</code> (equals) sign, followed by a newline.</p></div>
 865 <div class="paragraph"><p>The key may contain any bytes except <code>=</code>, newline, or NUL. The value may
 866 contain any bytes except newline or NUL.</p></div>
 867 <div class="paragraph"><p>Attributes with keys that end with C-style array brackets <code>[]</code> can have
 868 multiple values. Each instance of a multi-valued attribute forms an
 869 ordered list of values - the order of the repeated attributes defines
 870 the order of the values. An empty multi-valued attribute (<code>key[]=\n</code>)
 871 acts to clear any previous entries and reset the list.</p></div>
 872 <div class="paragraph"><p>In all cases, all bytes are treated as-is (i.e., there is no quoting,
 873 and one cannot transmit a value with newline or NUL in it). The list of
 874 attributes is terminated by a blank line or end-of-file.</p></div>
 875 <div class="paragraph"><p>Git understands the following attributes:</p></div>
 876 <div class="dlist"><dl>
 877 <dt class="hdlist1">
 878 <code>protocol</code>
 879 </dt>
 880 <dd>
 881 <p>
 882         The protocol over which the credential will be used (e.g.,
 883         <code>https</code>).
 884 </p>
 885 </dd>
 886 <dt class="hdlist1">
 887 <code>host</code>
 888 </dt>
 889 <dd>
 890 <p>
 891         The remote hostname for a network credential.  This includes
 892         the port number if one was specified (e.g., "example.com:8088").
 893 </p>
 894 </dd>
 895 <dt class="hdlist1">
 896 <code>path</code>
 897 </dt>
 898 <dd>
 899 <p>
 900         The path with which the credential will be used. E.g., for
 901         accessing a remote https repository, this will be the
 902         repository&#8217;s path on the server.
 903 </p>
 904 </dd>
 905 <dt class="hdlist1">
 906 <code>username</code>
 907 </dt>
 908 <dd>
 909 <p>
 910         The credential&#8217;s username, if we already have one (e.g., from a
 911         URL, the configuration, the user, or from a previously run helper).
 912 </p>
 913 </dd>
 914 <dt class="hdlist1">
 915 <code>password</code>
 916 </dt>
 917 <dd>
 918 <p>
 919         The credential&#8217;s password, if we are asking it to be stored.
 920 </p>
 921 </dd>
 922 <dt class="hdlist1">
 923 <code>password_expiry_utc</code>
 924 </dt>
 925 <dd>
 926 <p>
 927         Generated passwords such as an OAuth access token may have an expiry date.
 928         When reading credentials from helpers, <code>git credential fill</code> ignores expired
 929         passwords. Represented as Unix time UTC, seconds since 1970.
 930 </p>
 931 </dd>
 932 <dt class="hdlist1">
 933 <code>oauth_refresh_token</code>
 934 </dt>
 935 <dd>
 936 <p>
 937         An OAuth refresh token may accompany a password that is an OAuth access
 938         token. Helpers must treat this attribute as confidential like the password
 939         attribute. Git itself has no special behaviour for this attribute.
 940 </p>
 941 </dd>
 942 <dt class="hdlist1">
 943 <code>url</code>
 944 </dt>
 945 <dd>
 946 <p>
 947         When this special attribute is read by <code>git credential</code>, the
 948         value is parsed as a URL and treated as if its constituent parts
 949         were read (e.g., <code>url=https://example.com</code> would behave as if
 950         <code>protocol=https</code> and <code>host=example.com</code> had been provided). This
 951         can help callers avoid parsing URLs themselves.
 952 </p>
 953 <div class="paragraph"><p>Note that specifying a protocol is mandatory and if the URL
 954 doesn&#8217;t specify a hostname (e.g., "cert:///path/to/file") the
 955 credential will contain a hostname attribute whose value is an
 956 empty string.</p></div>
 957 <div class="paragraph"><p>Components which are missing from the URL (e.g., there is no
 958 username in the example above) will be left unset.</p></div>
 959 </dd>
 960 <dt class="hdlist1">
 961 <code>wwwauth[]</code>
 962 </dt>
 963 <dd>
 964 <p>
 965         When an HTTP response is received by Git that includes one or more
 966         <em>WWW-Authenticate</em> authentication headers, these will be passed by Git
 967         to credential helpers.
 968 </p>
 969 <div class="paragraph"><p>Each <em>WWW-Authenticate</em> header value is passed as a multi-valued
 970 attribute <em>wwwauth[]</em>, where the order of the attributes is the same as
 971 they appear in the HTTP response. This attribute is <em>one-way</em> from Git
 972 to pass additional information to credential helpers.</p></div>
 973 </dd>
 974 </dl></div>
 975 <div class="paragraph"><p>Unrecognised attributes are silently discarded.</p></div>
 976 </div>
 977 </div>
 978 <div class="sect1">
 979 <h2 id="_git">GIT</h2>
 980 <div class="sectionbody">
 981 <div class="paragraph"><p>Part of the <a href="git.html">git(1)</a> suite</p></div>
 982 </div>
 983 </div>
 984 </div>
 985 <div id="footnotes"><hr /></div>
 986 <div id="footer">
 987 <div id="footer-text">
 988 Last updated
 989  2023-10-23 14:43:46 PDT
 990 </div>
 991 </div>
 992 </body>
 993 </html>