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#include <event.h>
#include <dnet.h>
#include <pcap.h>
#if defined(__OpenBSD__)
#include <sys/queue.h>
#else
#include <bsd/sys/queue.h>
#endif
#define TRACEROUTE_NB_PROBES 3
enum tracemode {
TRACEMODE_AUTO = 0,
TRACEMODE_ICMP = 1,
TRACEMODE_TCP = 2,
};
struct ggnet_traceroute_hop {
TAILQ_ENTRY(ggnet_traceroute_hop) entry;
int ttl;
int answer_count; /* on TRACEROUTE_NB_PROBES sent probes */
char answer[2 * TRACEROUTE_NB_PROBES];
struct addr ip;
int delay;
int delay_dev;
int loss;
int loss_dev;
int asn;
};
struct ggnet_traceroute_req {
LIST_ENTRY(ggnet_traceroute_req) entry;
struct ggnet_traceroute_hop *target;
struct addr srcip;
enum tracemode mode;
int probes_count;
int hops_count;
TAILQ_HEAD(tailhead, ggnet_traceroute_hop) hops_list;
struct {
struct event *ev_recv;
struct event *ev_send;
struct event *ev_timeout;
struct timeval tv_timeout;
int last_ttl_sent;
} run;
void (*cb_done)(struct ggnet_traceroute_req *, void *);
void (*cb_hop)(struct ggnet_traceroute_req *, struct ggnet_traceroute_hop *, void *);
void *data;
struct ggnet_traceroute *ggtr;
};
struct ggnet_traceroute {
struct event_base *ev_base;
pcap_t *pcap;
intf_t *intf;
ip_t *pkt_ip;
rand_t *pkt_rand;
int pcap_fd;
int pcap_dllen; /* datalink layer hdr len */
int req_pending;
LIST_HEAD(, ggnet_traceroute_req) req_list;
};
struct ggnet_traceroute *
ggnet_traceroute_new(struct event_base *, char *);
void ggnet_traceroute_free(struct ggnet_traceroute *);
struct ggnet_traceroute_req *
ggnet_traceroute_trace(struct ggnet_traceroute *,
struct addr *ip, enum tracemode,
void (*cb_done)(struct ggnet_traceroute_req *, void *),
void (*cb_hop)(struct ggnet_traceroute_req *, struct ggnet_traceroute_hop *, void *),
void *);
void ggnet_traceroute_cancel(struct ggnet_traceroute *,
struct ggnet_traceroute_req *);
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