Function proxy_ftp_canon

modules/proxy/mod_proxy_ftp.c:286–372

* Canonicalise ftp URLs. */

 * Canonicalise ftp URLs.
 */
static int proxy_ftp_canon(request_rec *r, char *url)
{
    char *user, *password, *host, *path, *parms, *strp, sport[7];
    apr_pool_t *p = r->pool;
    const char *err;
    apr_port_t port, def_port;
    core_dir_config *d = ap_get_core_module_config(r->per_dir_config);
    int flags = d->allow_encoded_slashes && !d->decode_encoded_slashes ? PROXY_CANONENC_NOENCODEDSLASHENCODING : 0;

    /* */
    if (ap_cstr_casecmpn(url, "ftp:", 4) == 0) {
        url += 4;
    }
    else {
        return DECLINED;
    }
    def_port = apr_uri_port_of_scheme("ftp");

    ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "canonicalising URL %s", url);

    port = def_port;
    err = ap_proxy_canon_netloc(p, &url, &user, &password, &host, &port);
    if (err)
        return HTTP_BAD_REQUEST;
    if (user != NULL && !ftp_check_string(user))
        return HTTP_BAD_REQUEST;
    if (password != NULL && !ftp_check_string(password))
        return HTTP_BAD_REQUEST;

    /* now parse path/parameters args, according to rfc1738 */
    /*
     * N.B. if this isn't a true proxy request, then the URL path (but not
     * query args) has already been decoded. This gives rise to the problem
     * of a ; being decoded into the path.
     */
    strp = strchr(url, ';');
    if (strp != NULL) {
        *(strp++) = '\0';
        parms = ap_proxy_canonenc(p, strp, strlen(strp), enc_parm, 0,
                                  r->proxyreq);
        if (parms == NULL)
            return HTTP_BAD_REQUEST;
    }
    else
        parms = "";

    path = ap_proxy_canonenc_ex(p, url, strlen(url), enc_path, flags,
                                r->proxyreq);
    if (path == NULL)
        return HTTP_BAD_REQUEST;
    if (!ftp_check_string(path))
        return HTTP_BAD_REQUEST;

    if (r->proxyreq && r->args != NULL) {
        if (strp != NULL) {
            strp = ap_proxy_canonenc(p, r->args, strlen(r->args), enc_parm, 1, r->proxyreq);
            if (strp == NULL)
                return HTTP_BAD_REQUEST;