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/*
* nmcli - command-line tool for controlling NetworkManager
* Functions for running NM secret agent.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright 2014 Red Hat, Inc.
*/
#include "config.h"
#include <glib.h>
#include <glib/gi18n.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <readline/readline.h>
#include <readline/history.h>
#include "common.h"
#include "utils.h"
#include "nm-secret-agent-simple.h"
#include "polkit-agent.h"
#include "agent.h"
static void
usage (void)
{
g_printerr (_("Usage: nmcli agent { COMMAND | help }\n\n"
"COMMAND := { secret | polkit | all }\n\n"
));
}
static void
usage_agent_secret (void)
{
g_printerr (_("Usage: nmcli agent secret { help }\n"
"\n"
"Runs nmcli as NetworkManager secret agent. When NetworkManager requires\n"
"a password it asks registered agents for it. This command keeps nmcli running\n"
"and if a password is required asks the user for it.\n\n"));
}
static void
usage_agent_polkit (void)
{
g_printerr (_("Usage: nmcli agent polkit { help }\n"
"\n"
"Registers nmcli as a polkit action for the user session.\n"
"When a polkit daemon requires an authorization, nmcli asks the user and gives\n"
"the response back to polkit.\n\n"));
}
static void
usage_agent_all (void)
{
g_printerr (_("Usage: nmcli agent all { help }\n"
"\n"
"Runs nmcli as both NetworkManager secret and a polkit agent.\n\n"));
}
/* for pre-filling a string to readline prompt */
static char *pre_input_deftext;
static int
set_deftext (void)
{
if (pre_input_deftext && rl_startup_hook) {
rl_insert_text (pre_input_deftext);
g_free (pre_input_deftext);
pre_input_deftext = NULL;
rl_startup_hook = NULL;
}
return 0;
}
static gboolean
get_secrets_from_user (const char *request_id,
const char *title,
const char *msg,
GPtrArray *secrets)
{
int i;
for (i = 0; i < secrets->len; i++) {
NMSecretAgentSimpleSecret *secret = secrets->pdata[i];
char *pwd = NULL;
/* Ask user for the password */
g_print ("%s\n", msg);
if (secret->value) {
/* Prefill the password if we have it. */
rl_startup_hook = set_deftext;
pre_input_deftext = g_strdup (secret->value);
}
pwd = nmc_readline ("%s (%s): ", secret->name, secret->prop_name);
/* No password provided, cancel the secrets. */
if (!pwd)
return FALSE;
g_free (secret->value);
secret->value = pwd;
}
return TRUE;
}
static void
secrets_requested (NMSecretAgentSimple *agent,
const char *request_id,
const char *title,
const char *msg,
GPtrArray *secrets,
gpointer user_data)
{
NmCli *nmc = (NmCli *) user_data;
gboolean success = FALSE;
if (nmc->print_output == NMC_PRINT_PRETTY)
nmc_terminal_erase_line ();
success = get_secrets_from_user (request_id, title, msg, secrets);
if (success)
nm_secret_agent_simple_response (agent, request_id, secrets);
else
nm_secret_agent_simple_response (agent, request_id, NULL);
}
static NMCResultCode
do_agent_secret (NmCli *nmc, int argc, char **argv)
{
/* Create secret agent */
nmc->secret_agent = nm_secret_agent_simple_new ("nmcli-agent");
if (nmc->secret_agent) {
/* We keep running */
nmc->should_wait = TRUE;
nm_secret_agent_simple_enable (NM_SECRET_AGENT_SIMPLE (nmc->secret_agent));
g_signal_connect (nmc->secret_agent, "request-secrets", G_CALLBACK (secrets_requested), nmc);
g_print (_("nmcli successfully registered as a NetworkManager's secret agent.\n"));
} else {
g_string_printf (nmc->return_text, _("Error: secret agent initialization failed"));
nmc->return_value = NMC_RESULT_ERROR_UNKNOWN;
}
return nmc->return_value;
}
static NMCResultCode
do_agent_polkit (NmCli *nmc, int argc, char **argv)
{
GError *error = NULL;
/* Initialize polkit agent */
if (!nmc_polkit_agent_init (nmc, TRUE, &error)) {
g_dbus_error_strip_remote_error (error);
g_string_printf (nmc->return_text, _("Error: polkit agent initialization failed: %s"),
error->message);
nmc->return_value = NMC_RESULT_ERROR_UNKNOWN;
g_error_free (error);
} else {
/* We keep running */
nmc->should_wait = TRUE;
g_print (_("nmcli successfully registered as a polkit agent.\n"));
}
return nmc->return_value;
}
static NMCResultCode
do_agent_all (NmCli *nmc, int argc, char **argv)
{
NMCResultCode secret_res;
/* Run both secret and polkit agent */
secret_res = do_agent_secret (nmc, argc, argv);
if (secret_res != NMC_RESULT_SUCCESS)
g_printerr ("%s\n", nmc->return_text->str);
nmc->return_value = do_agent_polkit (nmc, argc, argv);
if (nmc->return_value == NMC_RESULT_SUCCESS && secret_res != NMC_RESULT_SUCCESS)
nmc->return_value = secret_res;
return nmc->return_value;
}
NMCResultCode
do_agent (NmCli *nmc, int argc, char **argv)
{
/* Get NMClient object */
nmc->get_client (nmc);
/* Check whether NetworkManager is running */
if (!nm_client_get_nm_running (nmc->client)) {
g_string_printf (nmc->return_text, _("Error: NetworkManager is not running."));
nmc->return_value = NMC_RESULT_ERROR_NM_NOT_RUNNING;
return nmc->return_value;
}
/* Compare NM and nmcli versions */
if (!nmc_versions_match (nmc))
return nmc->return_value;
if (argc == 0) {
nmc->return_value = do_agent_all (nmc, 0, NULL);
}
if (argc > 0) {
if (nmc_arg_is_help (*argv)) {
usage ();
goto usage_exit;
} else if (matches (*argv, "secret") == 0) {
if (nmc_arg_is_help (*(argv+1))) {
usage_agent_secret ();
goto usage_exit;
}
nmc->return_value = do_agent_secret (nmc, argc-1, argv+1);
} else if (matches (*argv, "polkit") == 0) {
if (nmc_arg_is_help (*(argv+1))) {
usage_agent_polkit ();
goto usage_exit;
}
nmc->return_value = do_agent_polkit (nmc, argc-1, argv+1);
} else if (matches (*argv, "all") == 0) {
if (nmc_arg_is_help (*(argv+1))) {
usage_agent_all ();
goto usage_exit;
}
nmc->return_value = do_agent_all (nmc, argc-1, argv+1);
} else {
usage ();
g_string_printf (nmc->return_text, _("Error: 'agent' command '%s' is not valid."), *argv);
nmc->return_value = NMC_RESULT_ERROR_USER_INPUT;
}
}
usage_exit:
return nmc->return_value;
}
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