Function authenticate_digest_user

modules/aaa/mod_auth_digest.c:1572–1845

 */

static int authenticate_digest_user(request_rec *r)
{
    digest_config_rec *conf;
    digest_header_rec *resp;
    request_rec       *mainreq;
    const char        *t;
    int                res;
    authn_status       return_code;

    /* do we require Digest auth for this URI? */

    if (!(t = ap_auth_type(r)) || ap_cstr_casecmp(t, "Digest")) {
        return DECLINED;
    }

    if (!ap_auth_name(r)) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01780)
                      "need AuthName: %s", r->uri);
        return HTTP_INTERNAL_SERVER_ERROR;
    }


    /* get the client response and mark */

    mainreq = r;
    while (mainreq->main != NULL) {
        mainreq = mainreq->main;
    }
    while (mainreq->prev != NULL) {
        mainreq = mainreq->prev;
    }
    resp = (digest_header_rec *) ap_get_module_config(mainreq->request_config,
                                                      &auth_digest_module);
    resp->needed_auth = 1;


    /* get our conf */

    conf = (digest_config_rec *) ap_get_module_config(r->per_dir_config,
                                                      &auth_digest_module);


    /* check for existence and syntax of Auth header */

    if (resp->auth_hdr_sts != VALID) {
        if (resp->auth_hdr_sts == NOT_DIGEST) {
            ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01781)
                          "client used wrong authentication scheme `%s': %s",
                          resp->scheme, r->uri);
        }
        else if (resp->auth_hdr_sts == INVALID) {
            ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01782)
                          "missing user, realm, nonce, uri, digest, "
                          "cnonce, or nonce_count in authorization header: %s",
                          r->uri);
        }
        /* else (resp->auth_hdr_sts == NO_HEADER) */
        note_digest_auth_failure(r, conf, resp, 0);