trace.lh

unix下基于IP协议的TRACE ROUTE 代码程序；C/C++语言

#include    "unp.h"##  1 ##src/traceroute/trace.h##
#include    <netinet/in_systm.h>##  2 ##src/traceroute/trace.h##
#include    <netinet/ip.h>##  3 ##src/traceroute/trace.h##
#include    <netinet/ip_icmp.h>##  4 ##src/traceroute/trace.h##
#include    <netinet/udp.h>##  5 ##src/traceroute/trace.h##

#define BUFSIZE     1500##  6 ##src/traceroute/trace.h##

struct rec {                    /* of outgoing UDP data */##  7 ##src/traceroute/trace.h##
    u_short rec_seq;            /* sequence number */##  8 ##src/traceroute/trace.h##
    u_short rec_ttl;            /* TTL packet left with */##  9 ##src/traceroute/trace.h##
    struct timeval rec_tv;      /* time packet left */## 10 ##src/traceroute/trace.h##
};## 11 ##src/traceroute/trace.h##

            /* globals */## 12 ##src/traceroute/trace.h##
char    recvbuf[BUFSIZE];## 13 ##src/traceroute/trace.h##
char    sendbuf[BUFSIZE];## 14 ##src/traceroute/trace.h##

int     datalen;                /* #bytes of data, following ICMP header */## 15 ##src/traceroute/trace.h##
char   *host;## 16 ##src/traceroute/trace.h##
u_short sport, dport;## 17 ##src/traceroute/trace.h##
int     nsent;                  /* add 1 for each sendto() */## 18 ##src/traceroute/trace.h##
pid_t   pid;                    /* our PID */## 19 ##src/traceroute/trace.h##
int     probe, nprobes;## 20 ##src/traceroute/trace.h##
int     sendfd, recvfd;         /* send on UDP sock, read on raw ICMP sock */## 21 ##src/traceroute/trace.h##
int     ttl, max_ttl;## 22 ##src/traceroute/trace.h##
int     verbose;## 23 ##src/traceroute/trace.h##

            /* function prototypes */## 24 ##src/traceroute/trace.h##
char   *icmpcode_v4(int);## 25 ##src/traceroute/trace.h##
char   *icmpcode_v6(int);## 26 ##src/traceroute/trace.h##
int     recv_v4(int, struct timeval *);## 27 ##src/traceroute/trace.h##
int     recv_v6(int, struct timeval *);## 28 ##src/traceroute/trace.h##
void    sig_alrm(int);## 29 ##src/traceroute/trace.h##
void    traceloop(void);## 30 ##src/traceroute/trace.h##
void    tv_sub(struct timeval *, struct timeval *);## 31 ##src/traceroute/trace.h##

struct proto {## 32 ##src/traceroute/trace.h##
    char   *(*icmpcode) (int);## 33 ##src/traceroute/trace.h##
    int     (*recv) (int, struct timeval *);## 34 ##src/traceroute/trace.h##
    struct sockaddr *sasend;    /* sockaddr{} for send, from getaddrinfo */## 35 ##src/traceroute/trace.h##
    struct sockaddr *sarecv;    /* sockaddr{} for receiving */## 36 ##src/traceroute/trace.h##
    struct sockaddr *salast;    /* last sockaddr{} for receiving */## 37 ##src/traceroute/trace.h##
    struct sockaddr *sabind;    /* sockaddr{} for binding source port */## 38 ##src/traceroute/trace.h##
    socklen_t salen;            /* length of sockaddr{}s */## 39 ##src/traceroute/trace.h##
    int     icmpproto;          /* IPPROTO_xxx value for ICMP */## 40 ##src/traceroute/trace.h##
    int     ttllevel;           /* setsockopt() level to set TTL */## 41 ##src/traceroute/trace.h##
    int     ttloptname;         /* setsockopt() name to set TTL */## 42 ##src/traceroute/trace.h##
}      *pr;## 43 ##src/traceroute/trace.h##

#ifdef  IPV6## 44 ##src/traceroute/trace.h##

#include    "ip6.h"             /* should be <netinet/ip6.h> */## 45 ##src/traceroute/trace.h##
#include    "icmp6.h"           /* should be <netinet/icmp6.h> */## 46 ##src/traceroute/trace.h##

#endif## 47 ##src/traceroute/trace.h##