## SoupAuthDomainDigest SoupAuthDomainDigest — Server-side "Digest" authentication |

## Synopsis

    #include <libsoup/soup.h>

                        SoupAuthDomainDigest;
    SoupAuthDomain *    soup_auth_domain_digest_new         (const char *optname1,
                                                             ...);

    char *              (*SoupAuthDomainDigestAuthCallback) (SoupAuthDomain *domain,
                                                             SoupMessage *msg,
                                                             const char *username,
                                                             gpointer user_data);
    void                soup_auth_domain_digest_set_auth_callback
                                                            (SoupAuthDomain *domain,
                                                             SoupAuthDomainDigestAuthCallback callback,
                                                             gpointer user_data,
                                                             GDestroyNotify dnotify);
    char *              soup_auth_domain_digest_encode_password
                                                            (const char *username,
                                                             const char *realm,
                                                             const char *password);

    #define             SOUP_AUTH_DOMAIN_DIGEST_AUTH_CALLBACK
    #define             SOUP_AUTH_DOMAIN_DIGEST_AUTH_DATA

## Object Hierarchy

      GObject
       +----SoupAuthDomain
             +----SoupAuthDomainDigest

## Properties

      "auth-callback"            gpointer              : Read / Write
      "auth-data"                gpointer              : Read / Write

## Description

SoupAuthDomainDigest handles the server side of HTTP "Digest" authentication.

## Details

### SoupAuthDomainDigest

    typedef struct _SoupAuthDomainDigest SoupAuthDomainDigest;

### soup_auth_domain_digest_new ()

    SoupAuthDomain *    soup_auth_domain_digest_new         (const char *optname1,
                                                             ...);

Creates a SoupAuthDomainDigest. You must set the `SOUP_AUTH_DOMAIN_REALM` parameter, to indicate the realm name to be returned with the authentication challenge to the client. Other parameters are optional.

`optname1` : | name of first option, or `NULL`
`...` : | option name/value pairs
Returns : | the new SoupAuthDomain

### SoupAuthDomainDigestAuthCallback ()

    char *              (*SoupAuthDomainDigestAuthCallback) (SoupAuthDomain *domain,
                                                             SoupMessage *msg,
                                                             const char *username,
                                                             gpointer user_data);

Callback used by SoupAuthDomainDigest for authentication purposes. The application should look up `username` in its password database, and return the corresponding encoded password (see `soup_auth_domain_digest_encode_password()`).

`domain` : | the domain
`msg` : | the message being authenticated
`username` : | the username provided by the client
`user_data` : | the data passed to `soup_auth_domain_digest_set_auth_callback()`
Returns : | the encoded password, or `NULL` if `username` is not a valid user. `domain` will free the password when it is done with it.

### soup_auth_domain_digest_set_auth_callback ()

    void                soup_auth_domain_digest_set_auth_callback
                                                            (SoupAuthDomain *domain,
                                                             SoupAuthDomainDigestAuthCallback callback,
                                                             gpointer user_data,
                                                             GDestroyNotify dnotify);

Sets the callback that `domain` will use to authenticate incoming requests. For each request containing authorization, `domain` will invoke the callback, and then either accept or reject the request based on `callback`'s return value.

You can also set the auth callback by setting the `SOUP_AUTH_DOMAIN_DIGEST_AUTH_CALLBACK` and `SOUP_AUTH_DOMAIN_DIGEST_AUTH_DATA` properties, which can also be used to set the callback at construct time.

`domain` : | the domain
`callback` : | the callback
`user_data` : | data to pass to `auth_callback`
`dnotify` : | destroy notifier to free `user_data` when `domain` is destroyed

### soup_auth_domain_digest_encode_password ()

    char *              soup_auth_domain_digest_encode_password
                                                            (const char *username,
                                                             const char *realm,
                                                             const char *password);

Encodes the username/realm/password triplet for Digest authentication. (That is, it returns a stringified MD5 hash of `username`, `realm`, and `password` concatenated together). This is the form that is needed as the return value of SoupAuthDomainDigest's auth handler.

For security reasons, you should store the encoded hash, rather than storing the cleartext password itself and calling this method only when you need to verify it. This way, if your server is compromised, the attackers will not gain access to cleartext passwords which might also be usable at other sites. (Note also that the encoded password returned by this method is identical to the encoded password stored in an Apache .htdigest file.)

`username` : | a username
`realm` : | an auth realm name
`password` : | the password for `username` in `realm`
Returns : | the encoded password

### SOUP_AUTH_DOMAIN_DIGEST_AUTH_CALLBACK

    #define SOUP_AUTH_DOMAIN_DIGEST_AUTH_CALLBACK "auth-callback"

Alias for the "auth-callback" property. (The SoupAuthDomainDigestAuthCallback.)

### SOUP_AUTH_DOMAIN_DIGEST_AUTH_DATA

    #define SOUP_AUTH_DOMAIN_DIGEST_AUTH_DATA     "auth-data"

Alias for the "auth-callback" property. (The SoupAuthDomainDigestAuthCallback.)

## Property Details

### The `"auth-callback"` property

      "auth-callback"            gpointer              : Read / Write

Password-finding callback.

### The `"auth-data"` property

      "auth-data"                gpointer              : Read / Write

Data to pass to authentication callback.