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https://git.kernel.org/pub/scm/network/wireless/iwd.git
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9047157b5e
When the client is interrupted in the middle of user input entry and the input is masked, the terminal might be left in a weird state. Make sure to reset the prompt if the agent is being cleaned up in the middle of an operation.
496 lines
13 KiB
C
496 lines
13 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2017-2019 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <ell/ell.h>
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#include "client/agent.h"
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#include "client/dbus-proxy.h"
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#include "client/display.h"
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#include "client/command.h"
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#define IWD_AGENT_INTERFACE "net.connman.iwd.Agent"
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#define PROMPT_USERNAME "Username:"
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#define PROMPT_PASSWORD "Password:"
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#define PROMPT_PASSPHRASE "Passphrase:"
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enum AGENT_OP_TYPE {
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AGENT_OP_TYPE_PASSPHRASE = 1,
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AGENT_OP_TYPE_PASSWORD,
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AGENT_OP_TYPE_UNAME_PASSWORD,
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};
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static struct l_dbus_message *pending_message;
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static struct pending_op {
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enum AGENT_OP_TYPE type;
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char *last_label;
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struct l_queue *saved_input;
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} pending_op;
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static struct l_dbus_message *agent_reply_canceled(
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struct l_dbus_message *message,
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const char *text)
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{
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return l_dbus_message_new_error(message,
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IWD_AGENT_INTERFACE ".Error.Canceled",
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"Error: %s", text);
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}
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static struct l_dbus_message *agent_reply_failed(struct l_dbus_message *message,
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const char *text)
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{
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return l_dbus_message_new_error(message,
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IWD_AGENT_INTERFACE ".Error.Failed",
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"Error: %s", text);
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}
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static struct l_dbus_message *agent_error(struct l_dbus_message *message,
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const char *text)
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{
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display_error(text);
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if (!command_is_interactive_mode()) {
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command_set_exit_status(EXIT_FAILURE);
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l_main_quit();
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}
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return agent_reply_canceled(message, text);
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}
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static struct l_dbus_message *release_method_call(struct l_dbus *dbus,
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struct l_dbus_message *message,
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void *user_data)
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{
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display_agent_prompt_release(pending_op.last_label);
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l_dbus_message_unref(pending_message);
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pending_message = NULL;
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return l_dbus_message_new_method_return(message);
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}
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static struct l_dbus_message *request_passphrase_command_option(
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struct l_dbus_message *message)
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{
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struct l_dbus_message *reply;
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const char *passphrase = NULL;
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command_option_get(COMMAND_OPTION_PASSPHRASE, &passphrase);
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if (!passphrase)
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return NULL;
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reply = l_dbus_message_new_method_return(message);
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l_dbus_message_set_arguments(reply, "s", passphrase);
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return reply;
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}
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static struct l_dbus_message *request_passphrase_method_call(
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struct l_dbus *dbus,
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struct l_dbus_message *message,
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void *user_data)
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{
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const struct proxy_interface *proxy;
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struct l_dbus_message *reply;
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const char *path;
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reply = request_passphrase_command_option(message);
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if (reply)
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return reply;
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if (command_option_get(COMMAND_OPTION_DONTASK, NULL))
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return agent_error(message, "No passphrase is provided as "
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"'--"COMMAND_OPTION_PASSPHRASE"' "
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"command-line option.\n");
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if (!l_dbus_message_get_arguments(message, "o", &path))
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return agent_reply_failed(message, "Invalid argument");
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if (!path)
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return agent_reply_failed(message, "Invalid argument");
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proxy = proxy_interface_find(IWD_NETWORK_INTERFACE, path);
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if (!proxy)
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return agent_reply_failed(message, "Invalid network object");
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display("Type the network passphrase for %s.\n",
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proxy_interface_get_identity_str(proxy));
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display_agent_prompt(PROMPT_PASSPHRASE, true);
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pending_op.type = AGENT_OP_TYPE_PASSPHRASE;
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pending_op.last_label = PROMPT_PASSPHRASE;
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pending_message = l_dbus_message_ref(message);
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return NULL;
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}
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static struct l_dbus_message *request_private_key_passphrase_method_call(
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struct l_dbus *dbus,
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struct l_dbus_message *message,
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void *user_data)
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{
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const struct proxy_interface *proxy;
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struct l_dbus_message *reply;
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const char *path;
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reply = request_passphrase_command_option(message);
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if (reply)
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return reply;
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if (command_option_get(COMMAND_OPTION_DONTASK, NULL))
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return agent_error(message, "No passphrase is provided as "
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"'--"COMMAND_OPTION_PASSPHRASE"' "
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"command-line option.\n");
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if (!l_dbus_message_get_arguments(message, "o", &path))
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return agent_reply_failed(message, "Invalid argument");
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if (!path)
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return agent_reply_failed(message, "Invalid argument");
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proxy = proxy_interface_find(IWD_NETWORK_INTERFACE, path);
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if (!proxy)
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return agent_reply_failed(message, "Invalid network object");
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display("Type the passphrase for the network encrypted private key for "
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"%s.\n", proxy_interface_get_identity_str(proxy));
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display_agent_prompt(PROMPT_PASSPHRASE, true);
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pending_op.type = AGENT_OP_TYPE_PASSPHRASE;
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pending_op.last_label = PROMPT_PASSPHRASE;
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pending_message = l_dbus_message_ref(message);
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return NULL;
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}
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static struct l_dbus_message *request_username_and_password_command_option(
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struct l_dbus_message *message)
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{
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struct l_dbus_message *reply;
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const char *username = NULL;
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const char *password = NULL;
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command_option_get(COMMAND_OPTION_USERNAME, &username);
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if (!username)
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return NULL;
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command_option_get(COMMAND_OPTION_PASSWORD, &password);
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if (!password)
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return NULL;
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reply = l_dbus_message_new_method_return(message);
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l_dbus_message_set_arguments(reply, "ss", username, password);
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return reply;
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}
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static struct l_dbus_message *request_username_and_password_method_call(
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struct l_dbus *dbus,
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struct l_dbus_message *message,
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void *user_data)
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{
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const struct proxy_interface *proxy;
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struct l_dbus_message *reply;
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const char *path;
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reply = request_username_and_password_command_option(message);
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if (reply)
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return reply;
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if (command_option_get(COMMAND_OPTION_DONTASK, NULL))
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return agent_error(message, "No username or password is "
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"provided as "
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"'--"COMMAND_OPTION_USERNAME"' or "
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"'--"COMMAND_OPTION_PASSWORD"' "
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"command-line option.\n");
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if (!l_dbus_message_get_arguments(message, "o", &path))
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return agent_reply_failed(message, "Invalid argument");
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if (!path)
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return agent_reply_failed(message, "Invalid argument");
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proxy = proxy_interface_find(IWD_NETWORK_INTERFACE, path);
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if (!proxy)
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return agent_reply_failed(message, "Invalid network object");
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display("Type the network credentials for %s.\n",
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proxy_interface_get_identity_str(proxy));
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display_agent_prompt(PROMPT_USERNAME, false);
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pending_op.type = AGENT_OP_TYPE_UNAME_PASSWORD;
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pending_op.last_label = PROMPT_USERNAME;
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pending_message = l_dbus_message_ref(message);
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return NULL;
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}
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static struct l_dbus_message *request_user_password_command_option(
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struct l_dbus_message *message)
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{
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struct l_dbus_message *reply;
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const char *password = NULL;
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command_option_get(COMMAND_OPTION_PASSWORD, &password);
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if (!password)
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return NULL;
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reply = l_dbus_message_new_method_return(message);
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l_dbus_message_set_arguments(reply, "s", password);
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return reply;
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}
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static struct l_dbus_message *request_user_password_method_call(
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struct l_dbus *dbus,
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struct l_dbus_message *message,
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void *user_data)
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{
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const struct proxy_interface *proxy;
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struct l_dbus_message *reply;
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const char *path;
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const char *username;
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char *username_prompt;
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reply = request_user_password_command_option(message);
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if (reply)
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return reply;
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if (command_option_get(COMMAND_OPTION_DONTASK, NULL))
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return agent_error(message, "No password is provided as "
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"'--"COMMAND_OPTION_PASSWORD"' "
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"command-line option.\n");
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if (!l_dbus_message_get_arguments(message, "os", &path, &username))
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return agent_reply_failed(message, "Invalid arguments");
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if (!path || !username)
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return agent_reply_failed(message, "Invalid argument");
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proxy = proxy_interface_find(IWD_NETWORK_INTERFACE, path);
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if (!proxy)
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return agent_reply_failed(message, "Invalid network object");
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display("Type the network password for %s.\n",
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proxy_interface_get_identity_str(proxy));
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username_prompt = l_strdup_printf(COLOR_BLUE PROMPT_USERNAME " "
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COLOR_OFF "%s\n", username);
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display("%s", username_prompt);
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l_free(username_prompt);
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display_agent_prompt(PROMPT_PASSWORD, true);
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pending_op.type = AGENT_OP_TYPE_PASSWORD;
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pending_op.last_label = PROMPT_PASSWORD;
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pending_message = l_dbus_message_ref(message);
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return NULL;
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}
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static struct l_dbus_message *cancel_method_call(struct l_dbus *dbus,
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struct l_dbus_message *message,
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void *user_data)
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{
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display_agent_prompt_release(pending_op.last_label);
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l_dbus_message_unref(pending_message);
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pending_message = NULL;
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return l_dbus_message_new_method_return(message);
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}
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static void setup_agent_interface(struct l_dbus_interface *interface)
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{
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l_dbus_interface_method(interface, "Release", 0, release_method_call,
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"", "");
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l_dbus_interface_method(interface, "RequestPassphrase", 0,
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request_passphrase_method_call, "s", "o",
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"passphrase", "network");
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l_dbus_interface_method(interface, "RequestPrivateKeyPassphrase", 0,
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request_private_key_passphrase_method_call,
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"s", "o", "private_key_path", "network");
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l_dbus_interface_method(interface, "RequestUserNameAndPassword", 0,
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request_username_and_password_method_call,
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"ss", "o", "user", "password", "network");
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l_dbus_interface_method(interface, "RequestUserPassword", 0,
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request_user_password_method_call, "s", "os",
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"password", "network", "user");
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l_dbus_interface_method(interface, "Cancel", 0, cancel_method_call,
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"", "s", "reason");
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}
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static void agent_send_reply(struct l_dbus_message *reply)
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{
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l_dbus_send(dbus_get_bus(), reply);
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l_dbus_message_unref(pending_message);
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pending_message = NULL;
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}
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static void process_input_username_password(const char *prompt)
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{
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struct l_dbus_message *reply;
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char *username;
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if (!prompt || !strlen(prompt)) {
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reply = agent_reply_canceled(pending_message,
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"Canceled by user");
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l_queue_clear(pending_op.saved_input, l_free);
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goto send_reply;
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}
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if (l_queue_isempty(pending_op.saved_input)) {
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/* received username */
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l_queue_push_tail(pending_op.saved_input, l_strdup(prompt));
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display_agent_prompt(PROMPT_PASSWORD, true);
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pending_op.last_label = PROMPT_PASSWORD;
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return;
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}
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username = l_queue_pop_head(pending_op.saved_input);
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reply = l_dbus_message_new_method_return(pending_message);
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l_dbus_message_set_arguments(reply, "ss", username, prompt);
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l_free(username);
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send_reply:
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agent_send_reply(reply);
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}
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static void process_input_passphrase(const char *prompt)
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{
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struct l_dbus_message *reply;
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if (!prompt || !strlen(prompt)) {
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reply = agent_reply_canceled(pending_message,
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"Canceled by user");
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goto send_reply;
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}
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reply = l_dbus_message_new_method_return(pending_message);
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l_dbus_message_set_arguments(reply, "s", prompt);
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send_reply:
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agent_send_reply(reply);
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}
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static void process_input_password(const char *prompt)
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{
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struct l_dbus_message *reply;
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if (!prompt || !strlen(prompt)) {
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reply = agent_reply_canceled(pending_message,
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"Canceled by user");
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goto send_reply;
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}
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reply = l_dbus_message_new_method_return(pending_message);
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l_dbus_message_set_arguments(reply, "s", prompt);
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send_reply:
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agent_send_reply(reply);
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}
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bool agent_prompt(const char *prompt)
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{
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if (!pending_message)
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return false;
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display_agent_prompt_release(pending_op.last_label);
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switch (pending_op.type) {
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case AGENT_OP_TYPE_UNAME_PASSWORD:
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process_input_username_password(prompt);
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break;
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case AGENT_OP_TYPE_PASSPHRASE:
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process_input_passphrase(prompt);
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break;
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case AGENT_OP_TYPE_PASSWORD:
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process_input_password(prompt);
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break;
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}
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return true;
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}
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bool agent_init(const char *path)
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{
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struct l_dbus *dbus = dbus_get_bus();
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if (!l_dbus_register_interface(dbus, IWD_AGENT_INTERFACE,
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setup_agent_interface, NULL, false)) {
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l_info("Unable to register %s interface", IWD_AGENT_INTERFACE);
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return false;
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}
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if (!l_dbus_object_add_interface(dbus, path, IWD_AGENT_INTERFACE,
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NULL)) {
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l_info("Unable to register the agent manager object on '%s'",
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path);
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l_dbus_unregister_interface(dbus, IWD_AGENT_INTERFACE);
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return false;
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}
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pending_op.saved_input = l_queue_new();
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return true;
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}
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bool agent_exit(const char *path)
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{
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struct l_dbus *dbus = dbus_get_bus();
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if (pending_message) {
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l_dbus_message_unref(pending_message);
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display_agent_prompt_release(pending_op.last_label);
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}
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l_queue_destroy(pending_op.saved_input, l_free);
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l_dbus_unregister_object(dbus, path);
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l_dbus_unregister_interface(dbus, IWD_AGENT_INTERFACE);
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return true;
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}
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