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acl_list.c
(12.48 KB)
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acl_list.h
(4.68 KB)
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cachedump.c
(23.83 KB)
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cachedump.h
(3.45 KB)
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daemon.c
(24.31 KB)
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daemon.h
(5.5 KB)
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remote.c
(86.18 KB)
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remote.h
(6.26 KB)
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stats.c
(17.83 KB)
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stats.h
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unbound.c
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worker.c
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worker.h
(5.48 KB)
Editing: remote.h
/* * daemon/remote.h - remote control for the unbound daemon. * * Copyright (c) 2008, NLnet Labs. All rights reserved. * * This software is open source. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of the NLNET LABS nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** * \file * * This file contains the remote control functionality for the daemon. * The remote control can be performed using either the commandline * unbound-control tool, or a SSLv3/TLS capable web browser. * The channel is secured using SSLv3 or TLSv1, and certificates. * Both the server and the client(control tool) have their own keys. */ #ifndef DAEMON_REMOTE_H #define DAEMON_REMOTE_H #ifdef HAVE_OPENSSL_SSL_H #include "openssl/ssl.h" #endif struct config_file; struct listen_list; struct listen_port; struct worker; struct comm_reply; struct comm_point; struct daemon_remote; /** number of milliseconds timeout on incoming remote control handshake */ #define REMOTE_CONTROL_TCP_TIMEOUT 120000 /** * a busy control command connection, SSL state */ struct rc_state { /** the next item in list */ struct rc_state* next; /** the commpoint */ struct comm_point* c; /** in the handshake part */ enum { rc_none, rc_hs_read, rc_hs_write } shake_state; #ifdef HAVE_SSL /** the ssl state */ SSL* ssl; #endif /** file descriptor */ int fd; /** the rc this is part of */ struct daemon_remote* rc; }; /** * The remote control tool state. * The state is only created for the first thread, other threads * are called from this thread. Only the first threads listens to * the control port. The other threads do not, but are called on the * command channel(pipe) from the first thread. */ struct daemon_remote { /** the worker for this remote control */ struct worker* worker; /** commpoints for accepting remote control connections */ struct listen_list* accept_list; /* if certificates are used */ int use_cert; /** number of active commpoints that are handling remote control */ int active; /** max active commpoints */ int max_active; /** current commpoints busy; should be a short list, malloced */ struct rc_state* busy_list; #ifdef HAVE_SSL /** the SSL context for creating new SSL streams */ SSL_CTX* ctx; #endif }; /** * Connection to print to, either SSL or plain over fd */ struct remote_stream { #ifdef HAVE_SSL /** SSL structure, nonNULL if using SSL */ SSL* ssl; #endif /** file descriptor for plain transfer */ int fd; }; typedef struct remote_stream RES; /** * Create new remote control state for the daemon. * @param cfg: config file with key file settings. * @return new state, or NULL on failure. */ struct daemon_remote* daemon_remote_create(struct config_file* cfg); /** * remote control state to delete. * @param rc: state to delete. */ void daemon_remote_delete(struct daemon_remote* rc); /** * remote control state to clear up. Busy and accept points are closed. * Does not delete the rc itself, or the ssl context (with its keys). * @param rc: state to clear. */ void daemon_remote_clear(struct daemon_remote* rc); /** * Open and create listening ports for remote control. * @param cfg: config options. * @return list of ports or NULL on failure. * can be freed with listening_ports_free(). */ struct listen_port* daemon_remote_open_ports(struct config_file* cfg); /** * Setup comm points for accepting remote control connections. * @param rc: state * @param ports: already opened ports. * @param worker: worker with communication base. and links to command channels. * @return false on error. */ int daemon_remote_open_accept(struct daemon_remote* rc, struct listen_port* ports, struct worker* worker); /** * Stop accept handlers for TCP (until enabled again) * @param rc: state */ void daemon_remote_stop_accept(struct daemon_remote* rc); /** * Stop accept handlers for TCP (until enabled again) * @param rc: state */ void daemon_remote_start_accept(struct daemon_remote* rc); /** * Handle nonthreaded remote cmd execution. * @param worker: this worker (the remote worker). */ void daemon_remote_exec(struct worker* worker); #ifdef HAVE_SSL /** * Print fixed line of text over ssl connection in blocking mode * @param ssl: print to * @param text: the text. * @return false on connection failure. */ int ssl_print_text(RES* ssl, const char* text); /** * printf style printing to the ssl connection * @param ssl: the RES connection to print to. Blocking. * @param format: printf style format string. * @return success or false on a network failure. */ int ssl_printf(RES* ssl, const char* format, ...) ATTR_FORMAT(printf, 2, 3); /** * Read until \n is encountered * If stream signals EOF, the string up to then is returned (without \n). * @param ssl: the RES connection to read from. blocking. * @param buf: buffer to read to. * @param max: size of buffer. * @return false on connection failure. */ int ssl_read_line(RES* ssl, char* buf, size_t max); #endif /* HAVE_SSL */ #endif /* DAEMON_REMOTE_H */
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