/* -*- mode: c; c-file-style: "openbsd" -*- */
/*
 * Copyright (c) 2013 Vincent Bernat <bernat@luffy.cx>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <unistd.h>
#include <string.h>
#include <sys/utsname.h>

#include "client.h"
#include "../log.h"

static int
cmd_iface_pattern(struct lldpctl_conn_t *conn, struct writer *w, struct cmd_env *env,
    const void *arg)
{
	log_debug("lldpctl", "set iface pattern");

	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}

	const char *value = cmdenv_get(env, "iface-pattern");
	if (lldpctl_atom_set_str(config, lldpctl_k_config_iface_pattern, value) ==
	    NULL) {
		log_warnx("lldpctl", "unable to set iface-pattern. %s",
		    lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "iface-pattern set to new value %s",
	    value ? value : "(none)");
	lldpctl_atom_dec_ref(config);
	return 1;
}

static int
cmd_perm_iface_pattern(struct lldpctl_conn_t *conn, struct writer *w,
    struct cmd_env *env, const void *arg)
{
	log_debug("lldpctl", "set permanent iface pattern");

	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}

	const char *value = cmdenv_get(env, "iface-pattern");
	if (lldpctl_atom_set_str(config, lldpctl_k_config_perm_iface_pattern, value) ==
	    NULL) {
		log_warnx("lldpctl", "unable to set permanent iface pattern. %s",
		    lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "permanent iface pattern set to new value %s",
	    value ? value : "(none)");
	lldpctl_atom_dec_ref(config);
	return 1;
}

static int
cmd_iface_promisc(struct lldpctl_conn_t *conn, struct writer *w, struct cmd_env *env,
    const void *arg)
{
	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}
	if (lldpctl_atom_set_int(config, lldpctl_k_config_iface_promisc, arg ? 1 : 0) ==
	    NULL) {
		log_warnx("lldpctl", "unable to %s promiscuous mode: %s",
		    arg ? "enable" : "disable", lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "interface promiscuous mode %s",
	    arg ? "enabled" : "disabled");
	lldpctl_atom_dec_ref(config);
	return 1;
}

static int
cmd_system_description(struct lldpctl_conn_t *conn, struct writer *w,
    struct cmd_env *env, const void *arg)
{
	int platform = 0;
	const char *what = arg;
	const char *value;
	if (!strcmp(what, "system")) {
		value = cmdenv_get(env, "description");
	} else {
		value = cmdenv_get(env, "platform");
		platform = 1;
	}
	log_debug("lldpctl", "set %s description", what);
	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}
	if (lldpctl_atom_set_str(config,
		platform ? lldpctl_k_config_platform : lldpctl_k_config_description,
		value) == NULL) {
		log_warnx("lldpctl", "unable to set description. %s",
		    lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "description set to new value %s",
	    value ? value : "(none)");
	lldpctl_atom_dec_ref(config);
	return 1;
}

static int
cmd_system_chassisid(struct lldpctl_conn_t *conn, struct writer *w, struct cmd_env *env,
    const void *arg)
{
	const char *value;
	value = cmdenv_get(env, "description");
	log_debug("lldpctl", "set chassis ID");
	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}
	if (lldpctl_atom_set_str(config, lldpctl_k_config_cid_string, value) == NULL) {
		log_warnx("lldpctl", "unable to set chassis ID. %s",
		    lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "chassis ID set to new value %s", value ? value : "(none)");
	lldpctl_atom_dec_ref(config);
	return 1;
}

static int
cmd_management(struct lldpctl_conn_t *conn, struct writer *w, struct cmd_env *env,
    const void *arg)
{
	log_debug("lldpctl", "set management pattern");

	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}

	const char *value = cmdenv_get(env, "management-pattern");
	if (lldpctl_atom_set_str(config, lldpctl_k_config_mgmt_pattern, value) ==
	    NULL) {
		log_warnx("lldpctl", "unable to set management pattern. %s",
		    lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "management pattern set to new value %s",
	    value ? value : "(none)");
	lldpctl_atom_dec_ref(config);
	return 1;
}

static int
cmd_hostname(struct lldpctl_conn_t *conn, struct writer *w, struct cmd_env *env,
    const void *arg)
{
	struct utsname un;
	log_debug("lldpctl", "set system name");

	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}

	const char *value = cmdenv_get(env, "hostname");
	if (value && strlen(value) == 1 && value[0] == '.') {
		if (uname(&un) < 0) {
			log_warn("lldpctl", "cannot get node name");
			lldpctl_atom_dec_ref(config);
			return 0;
		}
		char *c = strchr(un.nodename, '.');
		if (c) *c = 0;
		value = un.nodename;
	}
	if (lldpctl_atom_set_str(config, lldpctl_k_config_hostname, value) == NULL) {
		log_warnx("lldpctl", "unable to set system name. %s",
		    lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "system name set to new value %s",
	    value ? value : "(none)");
	lldpctl_atom_dec_ref(config);
	return 1;
}

static int
cmd_capability(struct lldpctl_conn_t *conn, struct writer *w, struct cmd_env *env,
    const void *arg)
{
	log_debug("lldpctl", "set capabilities");

	int ret = 0;
	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	lldpctl_atom_t *chassis = NULL;
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		goto cmd_capability_end;
	}

	if (!strcmp(arg, "configure")) {

		const char *s = cmdenv_get(env, "capabilities");
		if (s) {
			chassis = lldpctl_get_local_chassis(conn);
			if (chassis == NULL) {
				log_warnx("lldpctl",
				    "unable to get local chassis from lldpd. %s",
				    lldpctl_last_strerror(conn));
				goto cmd_capability_end;
			}
			u_int16_t value = 0;
			const char delim[] = ",";
			char *s_copy = strdup(s);
			char *token = strtok(s_copy, delim);
			while (token != NULL) {
				if (!strcmp(token, "other")) {
					value |= LLDP_CAP_OTHER;
				} else if (!strcmp(token, "repeater")) {
					value |= LLDP_CAP_REPEATER;
				} else if (!strcmp(token, "bridge")) {
					value |= LLDP_CAP_BRIDGE;
				} else if (!strcmp(token, "wlan")) {
					value |= LLDP_CAP_WLAN;
				} else if (!strcmp(token, "router")) {
					value |= LLDP_CAP_ROUTER;
				} else if (!strcmp(token, "telephone")) {
					value |= LLDP_CAP_TELEPHONE;
				} else if (!strcmp(token, "docsis")) {
					value |= LLDP_CAP_DOCSIS;
				} else if (!strcmp(token, "station")) {
					value |= LLDP_CAP_STATION;
				} else {
					log_warnx("lldpctl", "capability %s not found",
					    token);
				}
				token = strtok(NULL, delim);
			}
			free(s_copy);

			if (lldpctl_atom_set_int(chassis, lldpctl_k_chassis_cap_enabled,
				value) == NULL) {
				log_warnx("lldpctl",
				    "unable to set system capabilities. %s",
				    lldpctl_last_strerror(conn));
				goto cmd_capability_end;
			}
			if (lldpctl_atom_set_int(config,
				lldpctl_k_config_chassis_cap_override, 1) == NULL) {
				log_warnx("lldpctl",
				    "unable to set system capabilities override. %s",
				    lldpctl_last_strerror(conn));
				goto cmd_capability_end;
			}
			log_debug("lldpctl", "system capabilities set to new value %d",
			    value);
		}
	} else {
		if (lldpctl_atom_set_int(config, lldpctl_k_config_chassis_cap_override,
			0) == NULL) {
			log_warnx("lldpctl",
			    "unable to set system capabilities to not override. %s",
			    lldpctl_last_strerror(conn));
			goto cmd_capability_end;
		}
	}

	ret = 1;
cmd_capability_end:
	lldpctl_atom_dec_ref(chassis);
	lldpctl_atom_dec_ref(config);
	return ret;
}

static int
cmd_update_descriptions(struct lldpctl_conn_t *conn, struct writer *w,
    struct cmd_env *env, const void *arg)
{
	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}
	if (lldpctl_atom_set_int(config, lldpctl_k_config_ifdescr_update,
		arg ? 1 : 0) == NULL) {
		log_warnx("lldpctl", "unable to %s interface description update: %s",
		    arg ? "enable" : "disable", lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "interface description update %s",
	    arg ? "enabled" : "disabled");
	lldpctl_atom_dec_ref(config);
	return 1;
}

static int
cmd_bondslave_srcmac_type(struct lldpctl_conn_t *conn, struct writer *w,
    struct cmd_env *env, const void *arg)
{
	const char *value_str = 0;
	int value = -1;

	log_debug("lldpctl", "bond slave src mac");

	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}

	value_str = arg;
	for (lldpctl_map_t *b_map =
		 lldpctl_key_get_map(lldpctl_k_config_bond_slave_src_mac_type);
	     b_map->string; b_map++) {
		if (!strcmp(b_map->string, value_str)) {
			value = b_map->value;
			break;
		}
	}

	if (value == -1) {
		log_warnx("lldpctl", "invalid value");
		lldpctl_atom_dec_ref(config);
		return 0;
	}

	if (lldpctl_atom_set_int(config, lldpctl_k_config_bond_slave_src_mac_type,
		value) == NULL) {
		log_warnx("lldpctl",
		    "unable to set bond slave src mac type."
		    " %s",
		    lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}

	log_info("lldpctl", "bond slave src mac set to new value: %s", value_str);
	lldpctl_atom_dec_ref(config);

	return 1;
}

static int
cmd_maxneighs(struct lldpctl_conn_t *conn, struct writer *w, struct cmd_env *env,
    const void *arg)
{
	log_debug("lldpctl", "set maximum neighbors");

	lldpctl_atom_t *config = lldpctl_get_configuration(conn);
	if (config == NULL) {
		log_warnx("lldpctl", "unable to get configuration from lldpd. %s",
		    lldpctl_last_strerror(conn));
		return 0;
	}
	if (lldpctl_atom_set_str(config, lldpctl_k_config_max_neighbors,
		cmdenv_get(env, "max-neighbors")) == NULL) {
		log_warnx("lldpctl", "unable to set maximum of neighbors. %s",
		    lldpctl_last_strerror(conn));
		lldpctl_atom_dec_ref(config);
		return 0;
	}
	log_info("lldpctl", "maximum neighbors set to new value %s",
	    cmdenv_get(env, "max-neighbors"));
	lldpctl_atom_dec_ref(config);
	return 1;
}

/**
 * Register `configure system bond-slave-src-mac-type`
 */
static void
register_commands_srcmac_type(struct cmd_node *configure)
{
	struct cmd_node *bond_slave_src_mac_type =
	    commands_new(configure, "bond-slave-src-mac-type",
		"Set LLDP bond slave source MAC type", NULL, NULL, NULL);

	for (lldpctl_map_t *b_map =
		 lldpctl_key_get_map(lldpctl_k_config_bond_slave_src_mac_type);
	     b_map->string; b_map++) {
		if (!strcmp(b_map->string, "real")) {
			commands_new(commands_new(bond_slave_src_mac_type,
					 b_map->string, "Real mac", NULL, NULL, NULL),
			    NEWLINE, NULL, NULL, cmd_bondslave_srcmac_type,
			    b_map->string);
		} else if (!strcmp(b_map->string, "zero")) {
			commands_new(commands_new(bond_slave_src_mac_type,
					 b_map->string, "All zero mac", NULL, NULL,
					 NULL),
			    NEWLINE, NULL, NULL, cmd_bondslave_srcmac_type,
			    b_map->string);
		} else if (!strcmp(b_map->string, "fixed")) {
			commands_new(commands_new(bond_slave_src_mac_type,
					 b_map->string, "Fixed value (3Com card)", NULL,
					 NULL, NULL),
			    NEWLINE, NULL, NULL, cmd_bondslave_srcmac_type,
			    b_map->string);
		} else if (!strcmp(b_map->string, "local")) {
			commands_new(commands_new(bond_slave_src_mac_type,
					 b_map->string,
					 "Real Mac with locally "
					 "administered bit set",
					 NULL, NULL, NULL),
			    NEWLINE, NULL, NULL, cmd_bondslave_srcmac_type,
			    b_map->string);
		}
	}
}

static void
register_commands_capabilities(struct cmd_node *configure, struct cmd_node *unconfigure)
{
	struct cmd_node *configure_capability = commands_new(configure, "capabilities",
	    "Capabilities configuration", cmd_check_no_env, NULL, "ports");
	struct cmd_node *unconfigure_capability =
	    commands_new(unconfigure, "capabilities", "Capabilities configuration",
		cmd_check_no_env, NULL, "ports");

	/* Override */
	commands_new(commands_new(commands_new(configure_capability, "enabled",
				      "Override capabilities", NULL, NULL, NULL),
			 NULL, " Set of capabilities separated by commas", NULL,
			 cmd_store_env_value, "capabilities"),
	    NEWLINE, "Override capabilities", NULL, cmd_capability, "configure");

	/* Do not override */
	commands_new(commands_new(unconfigure_capability, "enabled",
			 "Do not override capabilities", NULL, NULL, NULL),
	    NEWLINE, "Do not override capabilities", NULL, cmd_capability,
	    "unconfigure");
}

/**
 * Register `configure system` commands.
 *
 * Those are the commands to configure protocol-independant stuff.
 */
void
register_commands_configure_system(struct cmd_node *configure,
    struct cmd_node *unconfigure)
{
	struct cmd_node *configure_system = commands_new(configure, "system",
	    "System configuration", cmd_check_no_env, NULL, "ports");
	struct cmd_node *unconfigure_system = commands_new(unconfigure, "system",
	    "System configuration", cmd_check_no_env, NULL, "ports");
	struct cmd_node *configure_interface = commands_new(configure_system,
	    "interface", "Interface related items", NULL, NULL, NULL);
	struct cmd_node *unconfigure_interface = commands_new(unconfigure_system,
	    "interface", "Interface related items", NULL, NULL, NULL);

	commands_new(commands_new(commands_new(configure_system, "description",
				      "Override chassis description", NULL, NULL, NULL),
			 NULL, "Chassis description", NULL, cmd_store_env_value,
			 "description"),
	    NEWLINE, "Override chassis description", NULL, cmd_system_description,
	    "system");
	commands_new(commands_new(unconfigure_system, "description",
			 "Don't override chassis description", NULL, NULL, NULL),
	    NEWLINE, "Don't override chassis description", NULL, cmd_system_description,
	    "system");

	commands_new(commands_new(commands_new(configure_system, "chassisid",
				      "Override chassis ID", NULL, NULL, NULL),
			 NULL, "Chassis ID", NULL, cmd_store_env_value, "description"),
	    NEWLINE, "Override chassis ID", NULL, cmd_system_chassisid, "system");
	commands_new(commands_new(unconfigure_system, "chassisid",
			 "Don't override chassis ID", NULL, NULL, NULL),
	    NEWLINE, "Don't override chassis ID", NULL, cmd_system_chassisid, "system");

	commands_new(commands_new(commands_new(configure_system, "platform",
				      "Override platform description", NULL, NULL,
				      NULL),
			 NULL, "Platform description (CDP)", NULL, cmd_store_env_value,
			 "platform"),
	    NEWLINE, "Override platform description", NULL, cmd_system_description,
	    "platform");
	commands_new(commands_new(unconfigure_system, "platform",
			 "Don't override platform description", NULL, NULL, NULL),
	    NEWLINE, "Don't override platform description", NULL,
	    cmd_system_description, "platform");

	commands_new(commands_new(commands_new(configure_system, "hostname",
				      "Override system name", NULL, NULL, NULL),
			 NULL, "System name", NULL, cmd_store_env_value, "hostname"),
	    NEWLINE, "Override system name", NULL, cmd_hostname, NULL);
	commands_new(commands_new(unconfigure_system, "hostname",
			 "Don't override system name", NULL, NULL, NULL),
	    NEWLINE, "Don't override system name", NULL, cmd_hostname, NULL);

	commands_new(commands_new(commands_new(configure_system, "max-neighbors",
				      "Set maximum number of neighbors per port",
				      cmd_check_no_env, NULL, "ports"),
			 NULL, "Maximum number of neighbors", NULL, cmd_store_env_value,
			 "max-neighbors"),
	    NEWLINE, "Set maximum number of neighbors per port", NULL, cmd_maxneighs,
	    NULL);

	commands_new(
	    commands_new(commands_new(commands_new(commands_new(configure_system, "ip",
						       "IP related options", NULL, NULL,
						       NULL),
					  "management", "IP management related options",
					  NULL, NULL, NULL),
			     "pattern", "Set IP management pattern", NULL, NULL, NULL),
		NULL, "IP management pattern (comma-separated list of wildcards)", NULL,
		cmd_store_env_value, "management-pattern"),
	    NEWLINE, "Set IP management pattern", NULL, cmd_management, NULL);
	commands_new(
	    commands_new(commands_new(commands_new(unconfigure_system, "ip",
					  "IP related options", NULL, NULL, NULL),
			     "management", "IP management related options", NULL, NULL,
			     NULL),
		"pattern", "Delete any IP management pattern", NULL, NULL, NULL),
	    NEWLINE, "Delete any IP management pattern", NULL, cmd_management, NULL);

	commands_new(commands_new(commands_new(configure_interface, "pattern",
				      "Set active interface pattern", NULL, NULL, NULL),
			 NULL, "Interface pattern (comma-separated list of wildcards)",
			 NULL, cmd_store_env_value, "iface-pattern"),
	    NEWLINE, "Set active interface pattern", NULL, cmd_iface_pattern, NULL);
	commands_new(commands_new(unconfigure_interface, "pattern",
			 "Delete any interface pattern", NULL, NULL, NULL),
	    NEWLINE, "Clear interface pattern", NULL, cmd_iface_pattern, NULL);

	commands_new(
	    commands_new(commands_new(configure_interface, "permanent",
			     "Set permanent interface pattern", NULL, NULL, NULL),
		NULL, "Permanent interface pattern (comma-separated list of wildcards)",
		NULL, cmd_store_env_value, "iface-pattern"),
	    NEWLINE, "Set permanent interface pattern", NULL, cmd_perm_iface_pattern,
	    NULL);
	commands_new(commands_new(unconfigure_interface, "permanent",
			 "Clear permanent interface pattern", NULL, NULL, NULL),
	    NEWLINE, "Delete any interface pattern", NULL, cmd_perm_iface_pattern,
	    NULL);

	commands_new(commands_new(configure_interface, "description",
			 "Update interface descriptions with neighbor name", NULL, NULL,
			 NULL),
	    NEWLINE, "Update interface descriptions with neighbor name", NULL,
	    cmd_update_descriptions, "enable");
	commands_new(commands_new(unconfigure_interface, "description",
			 "Don't update interface descriptions with neighbor name", NULL,
			 NULL, NULL),
	    NEWLINE, "Don't update interface descriptions with neighbor name", NULL,
	    cmd_update_descriptions, NULL);

	commands_new(commands_new(configure_interface, "promiscuous",
			 "Enable promiscuous mode on managed interfaces", NULL, NULL,
			 NULL),
	    NEWLINE, "Enable promiscuous mode on managed interfaces", NULL,
	    cmd_iface_promisc, "enable");
	commands_new(commands_new(unconfigure_interface, "promiscuous",
			 "Don't enable promiscuous mode on managed interfaces", NULL,
			 NULL, NULL),
	    NEWLINE, "Don't enable promiscuous mode on managed interfaces", NULL,
	    cmd_iface_promisc, NULL);

	register_commands_capabilities(configure_system, unconfigure_system);
	register_commands_srcmac_type(configure_system);
}