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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014 Red Hat, Inc.
*/
#include "nm-default.h"
#include <stdio.h>
#include <stdlib.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 "nm-polkit-listener.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 NmcConfig *nmc_config,
NmcReadlineStatus *readline_status,
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 */
if (msg)
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);
}
if (secret->no_prompt_entry_id)
pwd = nmc_readline (nmc_config, readline_status, "%s: ", secret->pretty_name);
else
pwd = nmc_readline (nmc_config, readline_status, "%s (%s): ", secret->pretty_name, secret->entry_id);
/* 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 = user_data;
gboolean success;
if (nmc->nmc_config.print_output == NMC_PRINT_PRETTY)
nmc_terminal_erase_line ();
success = get_secrets_from_user (&nmc->nmc_config, &nmc->readline_status, request_id, title, msg, secrets);
nm_secret_agent_simple_response (agent,
request_id,
success ? secrets : NULL);
}
static void
polkit_registered (gpointer instance,
gpointer user_data)
{
g_print (_("nmcli successfully registered as a polkit agent.\n"));
}
static void
polkit_error (gpointer instance,
const char *error,
gpointer user_data)
{
NmCli *nmc = user_data;
nmc_run_status_return (&nmc->run_status,
NMC_RESULT_ERROR_UNKNOWN,
_("Error: polkit agent failed: %s"),
error);
}
static void
do_agent (const NMCCommand *cmd,
NmCli *nmc,
int argc,
const char *const*argv)
{
gs_free_error GError *error = NULL;
gboolean with_polkit_agent = NM_IN_STRSET (cmd->cmd, NULL, "all", "polkit");
gboolean with_secret_agent = NM_IN_STRSET (cmd->cmd, NULL, "all", "secret");
nm_assert (with_polkit_agent || with_secret_agent);
if (with_polkit_agent) {
if (!nmc_polkit_agent_init (nmc, TRUE, &error)) {
g_dbus_error_strip_remote_error (error);
nmc_run_status_return (&nmc->run_status,
NMC_RESULT_ERROR_UNKNOWN,
_("Error: polkit agent initialization failed: %s"),
error->message);
return;
}
}
if (with_secret_agent) {
nmc->secret_agent = nm_secret_agent_simple_new ("nmcli-agent");
if (!nmc->secret_agent) {
nmc_run_status_return (&nmc->run_status,
NMC_RESULT_ERROR_UNKNOWN,
_("Error: secret agent initialization failed"));
return;
}
}
nmc_run_status_wait_push (&nmc->run_status);
if (with_polkit_agent) {
g_signal_connect (nmc->pk_listener,
NM_POLKIT_LISTENER_SIGNAL_ERROR,
G_CALLBACK (polkit_error),
nmc);
g_signal_connect (nmc->pk_listener,
NM_POLKIT_LISTENER_SIGNAL_REGISTERED,
G_CALLBACK (polkit_registered),
nmc);
}
if (with_secret_agent) {
nm_secret_agent_simple_enable (nmc->secret_agent, NULL);
g_signal_connect (nmc->secret_agent,
NM_SECRET_AGENT_SIMPLE_REQUEST_SECRETS,
G_CALLBACK (secrets_requested),
nmc);
g_print (_("nmcli successfully registered as a NetworkManager's secret agent.\n"));
}
}
void
nmc_command_do_agent (const NMCCommand *cmd, NmCli *nmc, int argc, const char *const*argv)
{
static const NMCCommand agent_cmds[] = {
{ "secret", do_agent, usage_agent_secret, TRUE, TRUE },
{ "polkit", do_agent, usage_agent_polkit, TRUE, TRUE },
{ "all", do_agent, usage_agent_all, TRUE, TRUE },
{ NULL, do_agent, usage, TRUE, TRUE },
};
next_arg (nmc, &argc, &argv, NULL);
nmc_do_cmd (nmc, agent_cmds, *argv, argc, argv);
}
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