X-Git-Url: https://git.distorted.org.uk/~mdw/secnet/blobdiff_plain/4efd681a66c15bc6f81eefc69396669e165e5e0f..b2a56f7c93d221607864761c590952b9a614dc9f:/secnet.h diff --git a/secnet.h b/secnet.h index db3bee2..ec630db 100644 --- a/secnet.h +++ b/secnet.h @@ -3,14 +3,13 @@ #ifndef secnet_h #define secnet_h +#include "config.h" #include -#include #include -#include #include +#include +#include #include -#include "config.h" - typedef char *string_t; typedef enum {False,True} bool_t; @@ -24,6 +23,7 @@ typedef enum {False,True} bool_t; struct subnet { uint32_t prefix; uint32_t mask; + uint32_t len; }; struct subnet_list { @@ -33,12 +33,22 @@ struct subnet_list { /* Match an address (in HOST byte order) with a subnet list. Returns True if matched. */ -extern bool_t subnet_match(struct subnet_list *list, uint32_t address); +extern bool_t subnet_match(struct subnet *s, uint32_t address); +extern bool_t subnet_matches_list(struct subnet_list *list, uint32_t address); +extern bool_t subnets_intersect(struct subnet a, struct subnet b); +extern bool_t subnet_intersects_with_list(struct subnet a, + struct subnet_list *b); +extern bool_t subnet_lists_intersect(struct subnet_list *a, + struct subnet_list *b); /***** END of shared types *****/ /***** CONFIGURATION support *****/ +extern bool_t just_check_config; /* If True then we're going to exit after + reading the configuration file */ +extern bool_t background; /* If True then we'll eventually run as a daemon */ + typedef struct dict dict_t; /* Configuration dictionary */ typedef struct closure closure_t; typedef struct item item_t; @@ -92,6 +102,7 @@ extern string_t *dict_keys(dict_t *dict); /* List-manipulation functions */ extern list_t *list_new(void); +extern uint32_t list_length(list_t *a); extern list_t *list_append(list_t *a, item_t *i); extern list_t *list_append_list(list_t *a, list_t *b); /* Returns an item from the list (index starts at 0), or NULL */ @@ -115,17 +126,28 @@ extern void dict_read_subnet_list(dict_t *dict, string_t key, bool_t required, string_t desc, struct cloc loc, struct subnet_list *sl); extern uint32_t string_to_ipaddr(item_t *i, string_t desc); +struct flagstr { + string_t name; + uint32_t value; +}; +extern uint32_t string_to_word(string_t s, struct cloc loc, + struct flagstr *f, string_t desc); +extern uint32_t string_list_to_word(list_t *l, struct flagstr *f, + string_t desc); /***** END of configuration support *****/ /***** UTILITY functions *****/ -#define M_WARNING 1 -#define M_ERROR 2 -#define M_FATAL 4 -#define M_INFO 8 -#define M_DEBUG_CONFIG 16 -#define M_DEBUG_PHASE 32 +#define M_DEBUG_CONFIG 0x001 +#define M_DEBUG_PHASE 0x002 +#define M_DEBUG 0x004 +#define M_INFO 0x008 +#define M_NOTICE 0x010 +#define M_WARNING 0x020 +#define M_ERROR 0x040 +#define M_SECURITY 0x080 +#define M_FATAL 0x100 extern void fatal(char *message, ...); extern void fatal_perror(char *message, ...); @@ -179,15 +201,24 @@ extern void register_for_poll(void *st, beforepoll_fn *before, #define PHASE_GETOPTS 1 /* Process command-line arguments */ #define PHASE_READCONFIG 2 /* Parse and process configuration file */ #define PHASE_SETUP 3 /* Process information in configuration */ -#define PHASE_DROPPRIV 4 /* Last chance for privileged operations */ -#define PHASE_RUN 5 -#define PHASE_SHUTDOWN 6 /* About to die; delete key material, etc. */ -#define NR_PHASES 7 +#define PHASE_GETRESOURCES 4 /* Obtain all external resources */ +#define PHASE_DROPPRIV 5 /* Last chance for privileged operations */ +#define PHASE_RUN 6 +#define PHASE_SHUTDOWN 7 /* About to die; delete key material, etc. */ +#define NR_PHASES 8 typedef void hook_fn(void *self, uint32_t newphase); bool_t add_hook(uint32_t phase, hook_fn *f, void *state); bool_t remove_hook(uint32_t phase, hook_fn *f, void *state); +extern bool_t require_root_privileges; /* Some features (like netlink + 'soft' routes) require that + secnet retain root + privileges. They should + indicate that here when + appropriate. */ +extern string_t require_root_privileges_explanation; + /***** END of program lifetime support *****/ /***** MODULE support *****/ @@ -283,15 +314,15 @@ struct comm_if { /* LOG interface */ -typedef void log_msg_fn(void *st, int priority, char *message, ...); -typedef void log_vmsg_fn(void *st, int priority, char *message, va_list args); +typedef void log_msg_fn(void *st, int class, char *message, ...); +typedef void log_vmsg_fn(void *st, int class, char *message, va_list args); struct log_if { void *st; log_msg_fn *log; log_vmsg_fn *vlog; }; /* (convenience function, defined in util.c) */ -extern void log(struct log_if *lf, int priority, char *message, ...); +extern void log(struct log_if *lf, int class, char *message, ...); /* SITE interface */ @@ -344,24 +375,36 @@ struct transform_if { /* NETLINK interface */ -/* Used by netlink to deliver to site, and by site to deliver to netlink. - cid is the client identifier returned by netlink_regnets_fn */ +/* Used by netlink to deliver to site, and by site to deliver to + netlink. cid is the client identifier returned by + netlink_regnets_fn. If buf has size 0 then the function is just + being called for its site-effects (eg. making the site code attempt + to bring up a network link) */ typedef void netlink_deliver_fn(void *st, void *cid, struct buffer_if *buf); /* site code can tell netlink when outgoing packets will be dropped, - so netlink can generate appropriate ICMP */ -typedef void netlink_can_deliver_fn(void *st, void *cid, bool_t can_deliver); -/* Register for packets from specified networks. Return value is client - identifier. */ + so netlink can generate appropriate ICMP and make routing decisions */ +#define LINK_QUALITY_DOWN 0 /* No chance of a packet being delivered */ +#define LINK_QUALITY_DOWN_STALE_ADDRESS 1 /* Link down, old address information */ +#define LINK_QUALITY_DOWN_CURRENT_ADDRESS 2 /* Link down, current address information */ +#define LINK_QUALITY_UP 3 /* Link active */ +#define MAXIMUM_LINK_QUALITY 3 +typedef void netlink_link_quality_fn(void *st, void *cid, uint32_t quality); +/* Register for packets from specified networks. Return value is + client identifier. 'hard_route' indicates whether the routes being + registered are permanent (hard) or temporary (soft); some types of + netlink device can only cope with hard routes. */ +#define NETLINK_OPTION_SOFTROUTE 1 +#define NETLINK_OPTION_ALLOW_ROUTE 2 typedef void *netlink_regnets_fn(void *st, struct subnet_list *networks, netlink_deliver_fn *deliver, void *dst, uint32_t max_start_pad, uint32_t max_end_pad, - string_t client_name); + uint32_t options, string_t client_name); struct netlink_if { void *st; netlink_regnets_fn *regnets; netlink_deliver_fn *deliver; - netlink_can_deliver_fn *set_delivery; + netlink_link_quality_fn *set_quality; }; /* DH interface */