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/* $OpenBSD: unwind.h,v 1.28 2019/11/14 08:34:17 florian Exp $ */
/*
* Copyright (c) 2018 Florian Obser <florian@openbsd.org>
* Copyright (c) 2004 Esben Norby <norby@openbsd.org>
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and 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 <event.h>
#include <imsg.h>
#include <stdint.h>
#ifndef nitems
#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
#endif
#define CONF_FILE "/etc/unwind.conf"
#define UNWIND_SOCKET "/dev/unwind.sock"
#define UNWIND_USER "_unwind"
#define OPT_VERBOSE 0x00000001
#define OPT_VERBOSE2 0x00000002
#define OPT_NOACTION 0x00000004
#define ROOT_DNSKEY_TTL 172800 /* TTL from authority */
#define KSK2017 ". 172800 IN DNSKEY 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlExOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgCmr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnXGXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU="
#define IMSG_DATA_SIZE(imsg) ((imsg).hdr.len - IMSG_HEADER_SIZE)
enum {
PROC_MAIN,
PROC_RESOLVER,
PROC_FRONTEND,
PROC_CAPTIVEPORTAL,
} uw_process;
static const char * const log_procnames[] = {
"main",
"resolver",
"frontend",
"captive portal",
};
enum uw_resolver_type {
UW_RES_RECURSOR,
UW_RES_DHCP,
UW_RES_ASR,
UW_RES_FORWARDER,
UW_RES_DOT,
UW_RES_NONE
};
static const char * const uw_resolver_type_str[] = {
"recursor",
"dhcp",
"stub",
"forwarder",
"DoT"
};
struct imsgev {
struct imsgbuf ibuf;
void (*handler)(int, short, void *);
struct event ev;
short events;
};
enum imsg_type {
IMSG_NONE,
IMSG_CTL_LOG_VERBOSE,
IMSG_CTL_RELOAD,
IMSG_CTL_STATUS,
IMSG_CTL_CAPTIVEPORTAL_INFO,
IMSG_RECONF_CONF,
IMSG_RECONF_CAPTIVE_PORTAL_HOST,
IMSG_RECONF_CAPTIVE_PORTAL_PATH,
IMSG_RECONF_CAPTIVE_PORTAL_EXPECTED_RESPONSE,
IMSG_RECONF_BLOCKLIST_FILE,
IMSG_RECONF_FORWARDER,
IMSG_RECONF_DOT_FORWARDER,
IMSG_RECONF_END,
IMSG_UDP4SOCK,
IMSG_UDP6SOCK,
IMSG_ROUTESOCK,
IMSG_CONTROLFD,
IMSG_STARTUP,
IMSG_STARTUP_DONE,
IMSG_SOCKET_IPC_FRONTEND,
IMSG_SOCKET_IPC_RESOLVER,
IMSG_SOCKET_IPC_CAPTIVEPORTAL,
IMSG_QUERY,
IMSG_ANSWER_HEADER,
IMSG_ANSWER,
IMSG_OPEN_DHCP_LEASE,
IMSG_LEASEFD,
IMSG_FORWARDER,
IMSG_CTL_RESOLVER_INFO,
IMSG_CTL_RESOLVER_WHY_BOGUS,
IMSG_CTL_RESOLVER_HISTOGRAM,
IMSG_CTL_END,
IMSG_CTL_RECHECK_CAPTIVEPORTAL,
IMSG_HTTPSOCK,
IMSG_CAPTIVEPORTAL_STATE,
IMSG_TAFD,
IMSG_NEW_TA,
IMSG_NEW_TAS_ABORT,
IMSG_NEW_TAS_DONE,
IMSG_RECHECK_RESOLVERS,
IMSG_CONNECT_CAPTIVE_PORTAL_HOST,
IMSG_BLFD,
IMSG_ADD_DNS,
IMSG_REMOVE_DNS,
};
struct uw_forwarder {
TAILQ_ENTRY(uw_forwarder) entry;
char name[1024]; /* XXX */
uint16_t port;
};
TAILQ_HEAD(uw_forwarder_head, uw_forwarder);
struct uw_conf {
struct uw_forwarder_head uw_forwarder_list;
struct uw_forwarder_head uw_dot_forwarder_list;
enum uw_resolver_type res_pref[UW_RES_NONE];
int res_pref_len;
char *captive_portal_host;
char *captive_portal_path;
char *captive_portal_expected_response;
int captive_portal_expected_status;
int captive_portal_auto;
char *blocklist_file;
int blocklist_log;
};
struct query_imsg {
uint64_t id;
char qname[255];
int t;
int c;
int err;
int bogus;
struct timespec tp;
};
extern uint32_t cmd_opts;
/* unwind.c */
void main_imsg_compose_frontend(int, pid_t, void *, uint16_t);
void main_imsg_compose_frontend_fd(int, pid_t, int);
void main_imsg_compose_resolver(int, pid_t, void *, uint16_t);
void main_imsg_compose_captiveportal(int, pid_t, void *, uint16_t);
void main_imsg_compose_captiveportal_fd(int, pid_t, int);
void merge_config(struct uw_conf *, struct uw_conf *);
void imsg_event_add(struct imsgev *);
int imsg_compose_event(struct imsgev *, uint16_t, uint32_t, pid_t,
int, void *, uint16_t);
void imsg_receive_config(struct imsg *, struct uw_conf **);
struct uw_conf *config_new_empty(void);
void config_clear(struct uw_conf *);
/* printconf.c */
void print_config(struct uw_conf *);
/* parse.y */
struct uw_conf *parse_config(char *);
int cmdline_symset(char *);
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