398 lines
12 KiB
C
398 lines
12 KiB
C
/*-
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* Copyright (c) 2012 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Edward Tomasz Napierala under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef CTLD_H
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#define CTLD_H
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#include <sys/queue.h>
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#ifdef ICL_KERNEL_PROXY
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#include <sys/types.h>
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#endif
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#include <sys/socket.h>
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#include <stdbool.h>
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#include <libutil.h>
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#include <openssl/md5.h>
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#define DEFAULT_CONFIG_PATH "/etc/ctl.conf"
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#define DEFAULT_PIDFILE "/var/run/ctld.pid"
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#define DEFAULT_BLOCKSIZE 512
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#define MAX_NAME_LEN 223
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#define MAX_DATA_SEGMENT_LENGTH (128 * 1024)
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#define MAX_BURST_LENGTH 16776192
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struct auth {
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TAILQ_ENTRY(auth) a_next;
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struct auth_group *a_auth_group;
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char *a_user;
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char *a_secret;
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char *a_mutual_user;
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char *a_mutual_secret;
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};
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struct auth_name {
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TAILQ_ENTRY(auth_name) an_next;
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struct auth_group *an_auth_group;
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char *an_initator_name;
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};
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struct auth_portal {
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TAILQ_ENTRY(auth_portal) ap_next;
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struct auth_group *ap_auth_group;
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char *ap_initator_portal;
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struct sockaddr_storage ap_sa;
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int ap_mask;
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};
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#define AG_TYPE_UNKNOWN 0
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#define AG_TYPE_DENY 1
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#define AG_TYPE_NO_AUTHENTICATION 2
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#define AG_TYPE_CHAP 3
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#define AG_TYPE_CHAP_MUTUAL 4
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struct auth_group {
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TAILQ_ENTRY(auth_group) ag_next;
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struct conf *ag_conf;
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char *ag_name;
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struct target *ag_target;
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int ag_type;
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TAILQ_HEAD(, auth) ag_auths;
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TAILQ_HEAD(, auth_name) ag_names;
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TAILQ_HEAD(, auth_portal) ag_portals;
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};
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struct portal {
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TAILQ_ENTRY(portal) p_next;
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struct portal_group *p_portal_group;
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bool p_iser;
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char *p_listen;
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struct addrinfo *p_ai;
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#ifdef ICL_KERNEL_PROXY
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int p_id;
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#endif
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TAILQ_HEAD(, target) p_targets;
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int p_socket;
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};
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#define PG_FILTER_UNKNOWN 0
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#define PG_FILTER_NONE 1
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#define PG_FILTER_PORTAL 2
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#define PG_FILTER_PORTAL_NAME 3
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#define PG_FILTER_PORTAL_NAME_AUTH 4
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struct portal_group {
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TAILQ_ENTRY(portal_group) pg_next;
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struct conf *pg_conf;
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char *pg_name;
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struct auth_group *pg_discovery_auth_group;
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int pg_discovery_filter;
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bool pg_unassigned;
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TAILQ_HEAD(, portal) pg_portals;
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char *pg_redirection;
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uint16_t pg_tag;
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};
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struct lun_option {
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TAILQ_ENTRY(lun_option) lo_next;
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struct lun *lo_lun;
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char *lo_name;
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char *lo_value;
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};
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struct lun {
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TAILQ_ENTRY(lun) l_next;
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TAILQ_HEAD(, lun_option) l_options;
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struct target *l_target;
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int l_lun;
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char *l_backend;
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int l_blocksize;
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char *l_device_id;
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char *l_path;
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char *l_serial;
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int64_t l_size;
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int l_ctl_lun;
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};
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struct target {
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TAILQ_ENTRY(target) t_next;
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TAILQ_HEAD(, lun) t_luns;
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struct conf *t_conf;
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struct auth_group *t_auth_group;
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struct portal_group *t_portal_group;
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char *t_name;
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char *t_alias;
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char *t_redirection;
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};
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struct isns {
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TAILQ_ENTRY(isns) i_next;
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struct conf *i_conf;
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char *i_addr;
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struct addrinfo *i_ai;
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};
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struct conf {
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char *conf_pidfile_path;
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TAILQ_HEAD(, target) conf_targets;
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TAILQ_HEAD(, auth_group) conf_auth_groups;
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TAILQ_HEAD(, portal_group) conf_portal_groups;
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TAILQ_HEAD(, isns) conf_isns;
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int conf_isns_period;
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int conf_isns_timeout;
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int conf_debug;
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int conf_timeout;
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int conf_maxproc;
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uint16_t conf_last_portal_group_tag;
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#ifdef ICL_KERNEL_PROXY
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int conf_portal_id;
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#endif
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struct pidfh *conf_pidfh;
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bool conf_default_pg_defined;
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bool conf_default_ag_defined;
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bool conf_kernel_port_on;
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};
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#define CONN_SESSION_TYPE_NONE 0
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#define CONN_SESSION_TYPE_DISCOVERY 1
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#define CONN_SESSION_TYPE_NORMAL 2
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#define CONN_DIGEST_NONE 0
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#define CONN_DIGEST_CRC32C 1
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struct connection {
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struct portal *conn_portal;
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struct target *conn_target;
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int conn_socket;
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int conn_session_type;
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char *conn_initiator_name;
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char *conn_initiator_addr;
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char *conn_initiator_alias;
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uint8_t conn_initiator_isid[6];
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struct sockaddr_storage conn_initiator_sa;
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uint32_t conn_cmdsn;
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uint32_t conn_statsn;
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size_t conn_max_data_segment_length;
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size_t conn_max_burst_length;
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int conn_immediate_data;
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int conn_header_digest;
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int conn_data_digest;
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const char *conn_user;
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struct chap *conn_chap;
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};
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struct pdu {
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struct connection *pdu_connection;
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struct iscsi_bhs *pdu_bhs;
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char *pdu_data;
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size_t pdu_data_len;
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};
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#define KEYS_MAX 1024
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struct keys {
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char *keys_names[KEYS_MAX];
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char *keys_values[KEYS_MAX];
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char *keys_data;
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size_t keys_data_len;
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};
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#define CHAP_CHALLENGE_LEN 1024
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struct chap {
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unsigned char chap_id;
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char chap_challenge[CHAP_CHALLENGE_LEN];
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char chap_response[MD5_DIGEST_LENGTH];
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};
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struct rchap {
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char *rchap_secret;
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unsigned char rchap_id;
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void *rchap_challenge;
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size_t rchap_challenge_len;
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};
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struct chap *chap_new(void);
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char *chap_get_id(const struct chap *chap);
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char *chap_get_challenge(const struct chap *chap);
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int chap_receive(struct chap *chap, const char *response);
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int chap_authenticate(struct chap *chap,
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const char *secret);
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void chap_delete(struct chap *chap);
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struct rchap *rchap_new(const char *secret);
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int rchap_receive(struct rchap *rchap,
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const char *id, const char *challenge);
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char *rchap_get_response(struct rchap *rchap);
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void rchap_delete(struct rchap *rchap);
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struct conf *conf_new(void);
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struct conf *conf_new_from_file(const char *path);
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struct conf *conf_new_from_kernel(void);
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void conf_delete(struct conf *conf);
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int conf_verify(struct conf *conf);
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struct auth_group *auth_group_new(struct conf *conf, const char *name);
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void auth_group_delete(struct auth_group *ag);
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struct auth_group *auth_group_find(const struct conf *conf,
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const char *name);
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int auth_group_set_type(struct auth_group *ag,
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const char *type);
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const struct auth *auth_new_chap(struct auth_group *ag,
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const char *user, const char *secret);
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const struct auth *auth_new_chap_mutual(struct auth_group *ag,
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const char *user, const char *secret,
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const char *user2, const char *secret2);
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const struct auth *auth_find(const struct auth_group *ag,
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const char *user);
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const struct auth_name *auth_name_new(struct auth_group *ag,
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const char *initiator_name);
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bool auth_name_defined(const struct auth_group *ag);
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const struct auth_name *auth_name_find(const struct auth_group *ag,
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const char *initiator_name);
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int auth_name_check(const struct auth_group *ag,
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const char *initiator_name);
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const struct auth_portal *auth_portal_new(struct auth_group *ag,
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const char *initiator_portal);
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bool auth_portal_defined(const struct auth_group *ag);
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const struct auth_portal *auth_portal_find(const struct auth_group *ag,
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const struct sockaddr_storage *sa);
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int auth_portal_check(const struct auth_group *ag,
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const struct sockaddr_storage *sa);
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struct portal_group *portal_group_new(struct conf *conf, const char *name);
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void portal_group_delete(struct portal_group *pg);
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struct portal_group *portal_group_find(const struct conf *conf,
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const char *name);
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int portal_group_add_listen(struct portal_group *pg,
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const char *listen, bool iser);
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int portal_group_set_filter(struct portal_group *pg,
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const char *filter);
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int portal_group_set_redirection(struct portal_group *pg,
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const char *addr);
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int isns_new(struct conf *conf, const char *addr);
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void isns_delete(struct isns *is);
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void isns_register(struct isns *isns, struct isns *oldisns);
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void isns_check(struct isns *isns);
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void isns_deregister(struct isns *isns);
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struct target *target_new(struct conf *conf, const char *name);
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void target_delete(struct target *target);
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struct target *target_find(struct conf *conf,
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const char *name);
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int target_set_redirection(struct target *target,
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const char *addr);
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struct lun *lun_new(struct target *target, int lun_id);
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void lun_delete(struct lun *lun);
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struct lun *lun_find(const struct target *target, int lun_id);
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void lun_set_backend(struct lun *lun, const char *value);
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void lun_set_blocksize(struct lun *lun, size_t value);
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void lun_set_device_id(struct lun *lun, const char *value);
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void lun_set_path(struct lun *lun, const char *value);
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void lun_set_serial(struct lun *lun, const char *value);
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void lun_set_size(struct lun *lun, size_t value);
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void lun_set_ctl_lun(struct lun *lun, uint32_t value);
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struct lun_option *lun_option_new(struct lun *lun,
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const char *name, const char *value);
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void lun_option_delete(struct lun_option *clo);
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struct lun_option *lun_option_find(const struct lun *lun,
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const char *name);
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void lun_option_set(struct lun_option *clo,
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const char *value);
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void kernel_init(void);
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int kernel_lun_add(struct lun *lun);
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int kernel_lun_resize(struct lun *lun);
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int kernel_lun_remove(struct lun *lun);
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void kernel_handoff(struct connection *conn);
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int kernel_port_add(struct target *targ);
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int kernel_port_remove(struct target *targ);
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void kernel_capsicate(void);
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#ifdef ICL_KERNEL_PROXY
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void kernel_listen(struct addrinfo *ai, bool iser,
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int portal_id);
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void kernel_accept(int *connection_id, int *portal_id,
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struct sockaddr *client_sa,
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socklen_t *client_salen);
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void kernel_send(struct pdu *pdu);
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void kernel_receive(struct pdu *pdu);
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#endif
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struct keys *keys_new(void);
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void keys_delete(struct keys *keys);
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void keys_load(struct keys *keys, const struct pdu *pdu);
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void keys_save(struct keys *keys, struct pdu *pdu);
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const char *keys_find(struct keys *keys, const char *name);
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int keys_find_int(struct keys *keys, const char *name);
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void keys_add(struct keys *keys,
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const char *name, const char *value);
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void keys_add_int(struct keys *keys,
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const char *name, int value);
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struct pdu *pdu_new(struct connection *conn);
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struct pdu *pdu_new_response(struct pdu *request);
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void pdu_delete(struct pdu *pdu);
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void pdu_receive(struct pdu *request);
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void pdu_send(struct pdu *response);
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void login(struct connection *conn);
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void discovery(struct connection *conn);
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void log_init(int level);
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void log_set_peer_name(const char *name);
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void log_set_peer_addr(const char *addr);
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void log_err(int, const char *, ...)
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__dead2 __printflike(2, 3);
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void log_errx(int, const char *, ...)
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__dead2 __printflike(2, 3);
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void log_warn(const char *, ...) __printflike(1, 2);
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void log_warnx(const char *, ...) __printflike(1, 2);
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void log_debugx(const char *, ...) __printflike(1, 2);
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char *checked_strdup(const char *);
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bool valid_iscsi_name(const char *name);
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void set_timeout(int timeout, int fatal);
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bool timed_out(void);
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#endif /* !CTLD_H */
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