FB::variant webpgPluginAPI::gpgSetPreference	(	const std::string &	preference,
		const std::string &	pref_value = `""`
	)

Attempts to set the specified gpgconf preference with the value of pref_value.

Parameters:

preference	The preference to set.
pref_value	The value to assign to the specified preference.

Definition at line 968 of file webpgPluginAPI.cpp.

References get_gpgme_ctx().

Referenced by gpgSignUID(), and webpgPluginAPI().

{
    gpgme_error_t err;
    gpgme_protocol_t proto = GPGME_PROTOCOL_OpenPGP;
    err = gpgme_engine_check_version (proto);
    if (err != GPG_ERR_NO_ERROR)
        return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

    gpgme_ctx_t ctx = get_gpgme_ctx();
    gpgme_conf_comp_t conf, comp;
    FB::variant response;
    std::string return_code;

    err = gpgme_op_conf_load (ctx, &conf);
    if (err != GPG_ERR_NO_ERROR)
        return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

    gpgme_conf_arg_t original_arg, arg;
    gpgme_conf_opt_t opt;

    if (pref_value.length())
        err = gpgme_conf_arg_new (&arg, GPGME_CONF_STRING, (char *) pref_value.c_str());
    else
        err = gpgme_conf_arg_new (&arg, GPGME_CONF_STRING, NULL);

    if (err != GPG_ERR_NO_ERROR)
        return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

    comp = conf;
    while (comp && strcmp (comp->name, "gpg"))
        comp = comp->next;

    if (comp) {
        opt = comp->options;

        while (opt && strcmp (opt->name, (char *) preference.c_str())){
            opt = opt->next;
        }

        if (!opt) {
            return "unable to locate that option in this context";
        }

        if (opt->value && pref_value.length()) {
            original_arg = opt->value;
        } else {
            original_arg = opt->value;
            return_code = "blank";
        }

        /* if the new argument and original argument are the same, return 0, 
            there is nothing to do. */
        if (pref_value.length() && original_arg && 
            !strcmp (original_arg->value.string, arg->value.string)) {
            return "0";
        }

        if (opt) {
            if (!strcmp(pref_value.c_str(), "blank") || pref_value.length() < 1)
                err = gpgme_conf_opt_change (opt, 0, NULL);
            else
                err = gpgme_conf_opt_change (opt, 0, arg);

            if (err != GPG_ERR_NO_ERROR)
                return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);

            err = gpgme_op_conf_save (ctx, comp);
            if (err != GPG_ERR_NO_ERROR)
                return get_error_map(__func__, gpgme_err_code (err), gpgme_strerror (err), __LINE__, __FILE__);
        }
    }

    if (conf)
        gpgme_conf_release (conf);

    if (ctx)
        gpgme_release (ctx);

    if (!return_code.length())
        return_code = strdup(original_arg->value.string);

    return return_code;
}

Here is the call graph for this function: