1 #ifndef lint 2 static char sccsid[] = "@(#)inet.c 4.5 82/11/14"; 3 #endif 4 5 #include <sys/types.h> 6 #include <sys/socket.h> 7 #include <sys/socketvar.h> 8 #include <sys/mbuf.h> 9 #include <sys/protosw.h> 10 11 #include <net/route.h> 12 #include <netinet/in.h> 13 #include <netinet/in_systm.h> 14 #include <netinet/in_pcb.h> 15 #include <netinet/ip.h> 16 #include <netinet/ip_icmp.h> 17 #include <netinet/ip_var.h> 18 #include <netinet/tcp.h> 19 #include <netinet/tcpip.h> 20 #include <netinet/tcp_seq.h> 21 #define TCPSTATES 22 #include <netinet/tcp_fsm.h> 23 #include <netinet/tcp_timer.h> 24 #include <netinet/tcp_var.h> 25 #include <netinet/tcp_debug.h> 26 #include <netinet/udp.h> 27 #include <netinet/udp_var.h> 28 29 #include <netdb.h> 30 31 struct inpcb inpcb; 32 struct tcpcb tcpcb; 33 struct socket socket; 34 struct protosw proto; 35 extern int kmem; 36 extern int Aflag; 37 extern int aflag; 38 extern int nflag; 39 40 static int first = 1; 41 char *inetname(); 42 43 /* 44 * Print a summary of connections related to an Internet 45 * protocol. For TCP, also give state of connection. 46 * Listening processes (aflag) are suppressed unless the 47 * -a (all) flag is specified. 48 */ 49 protopr(off, name) 50 off_t off; 51 char *name; 52 { 53 struct inpcb cb; 54 register struct inpcb *prev, *next; 55 int istcp; 56 57 if (off == 0) { 58 printf("%s control block: symbol not in namelist\n", name); 59 return; 60 } 61 istcp = strcmp(name, "tcp") == 0; 62 klseek(kmem, off, 0); 63 read(kmem, &cb, sizeof (struct inpcb)); 64 inpcb = cb; 65 prev = (struct inpcb *)off; 66 if (first) { 67 printf("Active connections"); 68 if (aflag) 69 printf(" (including servers)"); 70 putchar('\n'); 71 if (Aflag) 72 printf("%-8.8s ", "PCB"); 73 printf("%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n", 74 "Proto", "Recv-Q", "Send-Q", 75 "Local Address", "Foreign Address", "(state)"); 76 first = 0; 77 } 78 while (inpcb.inp_next != (struct inpcb *)off) { 79 char *cp; 80 81 next = inpcb.inp_next; 82 klseek(kmem, (off_t)next, 0); 83 read(kmem, &inpcb, sizeof (inpcb)); 84 if (inpcb.inp_prev != prev) { 85 printf("???\n"); 86 break; 87 } 88 if (!aflag && 89 inet_lnaof(inpcb.inp_laddr.s_addr) == INADDR_ANY) { 90 prev = next; 91 continue; 92 } 93 klseek(kmem, (off_t)inpcb.inp_socket, 0); 94 read(kmem, &socket, sizeof (socket)); 95 if (istcp) { 96 klseek(kmem, (off_t)inpcb.inp_ppcb, 0); 97 read(kmem, &tcpcb, sizeof (tcpcb)); 98 } 99 if (Aflag) 100 printf("%8x ", inpcb.inp_ppcb); 101 printf("%-5.5s %6d %6d ", name, socket.so_rcv.sb_cc, 102 socket.so_snd.sb_cc); 103 inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name); 104 inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name); 105 if (istcp) { 106 if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES) 107 printf(" %d", tcpcb.t_state); 108 else 109 printf(" %s", tcpstates[tcpcb.t_state]); 110 } 111 putchar('\n'); 112 prev = next; 113 } 114 } 115 116 /* 117 * Pretty print an Internet address (net address + port). 118 * If the nflag was specified, use numbers instead of names. 119 */ 120 inetprint(in, port, proto) 121 register struct in_addr *in; 122 int port; 123 char *proto; 124 { 125 struct servent *sp = 0; 126 char line[80], *cp, *index(); 127 128 sprintf(line, "%.10s.", inetname(*in)); 129 cp = index(line, '\0'); 130 #if vax || pdp11 131 port = ntohs((u_short)port); 132 #endif 133 if (!nflag && port) 134 sp = getservbyport(port, proto); 135 if (sp || port == 0) 136 sprintf(cp, "%.8s", sp ? sp->s_name : "*"); 137 else 138 sprintf(cp, "%d", port); 139 printf(" %-18.18s", line); 140 } 141 142 /* 143 * Construct an Internet address representation. 144 * If the nflag has been supplied, give 145 * numeric value, otherwise try for symbolic name. 146 */ 147 char * 148 inetname(in) 149 struct in_addr in; 150 { 151 char *cp = 0; 152 static char line[50]; 153 154 if (!nflag) { 155 if (inet_lnaof(in) == INADDR_ANY) { 156 struct netent *np; 157 158 np = getnetbyaddr(inet_netof(in), AF_INET); 159 if (np) 160 cp = np->n_name; 161 } else { 162 struct hostent *hp; 163 164 hp = gethostbyaddr(&in, sizeof (struct in_addr), 165 AF_INET); 166 if (hp) 167 cp = hp->h_name; 168 } 169 } 170 if (in.s_addr == INADDR_ANY) 171 strcpy(line, "*"); 172 else if (cp) 173 strcpy(line, cp); 174 else { 175 u_char *ucp = (u_char *)∈ 176 sprintf(line, "%u.%u.%u.%u", ucp[0], ucp[1], ucp[2], ucp[3]); 177 } 178 return (line); 179 } 180