commands/udpstat/udpstat.c
C | 323 lines | 284 code | 29 blank | 10 comment | 49 complexity | d43fb217450a9040702ed8a4f6aca3fb MD5 | raw file
Possible License(s): MIT, WTFPL, AGPL-1.0, BSD-3-Clause, GPL-3.0, LGPL-2.0, JSON, 0BSD
- /*
- udpstat.c
- Created: March 2001 by Philip Homburg <philip@f-mnx.phicoh.com>
- */
- #define _MINIX_SOURCE
- #define _POSIX_C_SOURCE 2
- #include <inet/inet.h>
- #undef printf
- #undef send
- #include <assert.h>
- #include <fcntl.h>
- #include <stdio.h>
- #include <time.h>
- #include <unistd.h>
- #include <sys/svrctl.h>
- #ifndef __minix_vmd
- #include <sys/times.h>
- #endif
- #include <net/netlib.h>
- #include <net/gen/inet.h>
- #include <net/gen/netdb.h>
- #include <net/gen/socket.h>
- #include <minix/queryparam.h>
- #include <inet/generic/buf.h>
- #include <inet/generic/clock.h>
- #include <inet/generic/event.h>
- #include <inet/generic/type.h>
- #include <inet/generic/udp_int.h>
- char *prog_name;
- udp_fd_t udp_fd_table[UDP_FD_NR];
- udp_port_t *udp_port_table;
- udp_port_t *udp_port_tablep;
- size_t udp_port_table_s;
- size_t udp_port_table_rs;
- int udp_port_nr;
- char values[6 * sizeof(void *) + 3];
- char *valuesl= NULL;
- size_t v_size;
- int inclSel, numerical;
- void print_fd(int i, clock_t now);
- void usage(void);
- int main(int argc, char*argv[])
- {
- char *ipstat_device;
- int fd, i, r;
- size_t psize;
- char *pval, *param;
- struct timeval uptime;
- clock_t now;
- int fl;
- int a_flag, n_flag;
- struct tms tmsbuf;
- (prog_name=strrchr(argv[0], '/')) ? prog_name++ : (prog_name=argv[0]);
- a_flag= 0;
- n_flag= 0;
- while ((fl= getopt(argc, argv, "?an")) != -1)
- {
- switch(fl)
- {
- case '?':
- usage();
- case 'a':
- a_flag= 1;
- break;
- case 'n':
- n_flag= 1;
- break;
- default:
- fprintf(stderr, "%s: getopt failed: '%c'\n",
- prog_name, fl);
- exit(1);
- }
- }
- inclSel= !!a_flag;
- numerical= !!n_flag;
- ipstat_device= IPSTAT_DEVICE;
- if ((fd= open(ipstat_device, O_RDWR)) == -1)
- {
- fprintf(stderr, "%s: unable to open '%s': %s\n", prog_name,
- ipstat_device, strerror(errno));
- exit(1);
- }
- v_size= 2*sizeof(udp_fd_table)+1;
- valuesl= realloc(valuesl, v_size);
- if (!valuesl)
- {
- fprintf(stderr, "%s: unable to malloc %u bytes for valuesl\n",
- prog_name, v_size);
- exit(1);
- }
- param= "udp_fd_table";
- psize= strlen(param);
- r= write(fd, param, psize);
- if (r != psize)
- {
- fprintf(stderr, "%s: write to %s failed: %s\n", prog_name,
- ipstat_device,
- r < 0 ? strerror(errno) : "short write");
- exit(1);
- }
- r= read(fd, valuesl, v_size);
- if (r < 0)
- {
- fprintf(stderr, "%s: read from %s failed: %s\n", prog_name,
- ipstat_device, strerror(errno));
- exit(1);
- }
- pval= valuesl;
- if (paramvalue(&pval, udp_fd_table, sizeof(udp_fd_table)) !=
- sizeof(udp_fd_table))
- {
- fprintf(stderr,
- "%s: unable to decode the results from queryparam (udp_fd_table)\n",
- prog_name);
- exit(1);
- }
- /* Get address, size, and element size of the UDP port table */
- param = "&udp_port_table,$udp_port_table,$udp_port_table[0]";
- psize = strlen(param);
- r= write(fd, param, psize);
- if (r != psize)
- {
- fprintf(stderr, "%s: write to %s failed: %s\n", prog_name,
- ipstat_device,
- r < 0 ? strerror(errno) : "short write");
- exit(1);
- }
- r= read(fd, values, sizeof(values));
- if (r < 0)
- {
- fprintf(stderr, "%s: read from %s failed: %s\n", prog_name,
- ipstat_device, strerror(errno));
- exit(1);
- }
- pval= values;
- if (paramvalue(&pval, &udp_port_tablep, sizeof(udp_port_tablep)) !=
- sizeof(udp_port_tablep) ||
- paramvalue(&pval, &udp_port_table_s, sizeof(udp_port_table_s))
- != sizeof(udp_port_table_s) ||
- paramvalue(&pval, &udp_port_table_rs, sizeof(udp_port_table_rs))
- != sizeof(udp_port_table_rs))
- {
- fprintf(stderr,
- "%s: unable to decode the results from queryparam (&udp_port_table, ...)\n",
- prog_name);
- exit(1);
- }
- if (udp_port_table_rs != sizeof(udp_port_table[0]))
- {
- fprintf(stderr,
- "%s: size mismatch in udp_port_table (different version of inet?)\n",
- prog_name);
- exit(1);
- }
- udp_port_nr= udp_port_table_s/udp_port_table_rs;
- assert(udp_port_table_s == udp_port_nr*udp_port_table_rs);
- udp_port_table= malloc(udp_port_table_s);
- if (!udp_port_table)
- {
- fprintf(stderr,
- "%s: unable to malloc %u bytes for udp_port_table\n",
- prog_name, udp_port_table_s);
- exit(1);
- }
- v_size= 2*udp_port_table_s+1;
- valuesl= realloc(valuesl, v_size);
- if (!valuesl)
- {
- fprintf(stderr, "%s: unable to malloc %u bytes for valuesl\n",
- prog_name, v_size);
- exit(1);
- }
- param = "udp_port_table";
- psize = strlen(param);
- r= write(fd, param, psize);
- if (r != psize)
- {
- fprintf(stderr, "%s: write to %s failed: %s\n", prog_name,
- ipstat_device,
- r < 0 ? strerror(errno) : "short write");
- exit(1);
- }
- r= read(fd, valuesl, v_size);
- if (r < 0)
- {
- fprintf(stderr, "%s: read from %s failed: %s\n", prog_name,
- ipstat_device, strerror(errno));
- exit(1);
- }
- pval= valuesl;
- if (paramvalue(&pval, udp_port_table, udp_port_table_s) !=
- udp_port_table_s)
- {
- fprintf(stderr,
- "%s: unable to decode the results from queryparam (udp_port_table)\n",
- prog_name);
- exit(1);
- }
- /* Get the uptime in clock ticks. */
- #ifdef __minix_vmd
- if (sysutime(UTIME_UPTIME, &uptime) == -1)
- {
- fprintf(stderr, "%s: sysutime failed: %s\n", prog_name,
- strerror(errno));
- exit(1);
- }
- now= uptime.tv_sec * HZ + (uptime.tv_usec*HZ/1000000);
- #else /* Minix 3 */
- now= times(&tmsbuf);
- #endif
- for (i= 0; i<UDP_FD_NR; i++)
- print_fd(i, now);
- exit(0);
- }
- void print_fd(int i, clock_t now)
- {
- unsigned long nwuo_flags;
- int port_nr;
- udp_fd_t *udp_fd;
- udp_port_t *udp_port;
- char *locaddr_str, *remaddr_str;
- struct hostent *hostent;
- struct servent *servent;
- nwio_udpopt_t uf_udpopt;
- udp_fd= &udp_fd_table[i];
- if (!(udp_fd->uf_flags & UFF_INUSE))
- return;
- uf_udpopt= udp_fd->uf_udpopt;
- nwuo_flags= uf_udpopt.nwuo_flags;
- if (((nwuo_flags & NWUO_LOCPORT_MASK) != NWUO_LP_SET) && !inclSel)
- return;
- port_nr= udp_fd->uf_port-udp_port_tablep;
- udp_port= &udp_port_table[port_nr];
-
- printf("%3d", i);
- if (nwuo_flags & NWUO_EN_LOC)
- {
- if (!numerical && (hostent=
- gethostbyaddr((char *)&udp_port->up_ipaddr,
- sizeof(ipaddr_t), AF_INET)) != NULL)
- {
- locaddr_str= hostent->h_name;
- }
- else
- locaddr_str= inet_ntoa(udp_port->up_ipaddr);
- }
- else if (nwuo_flags & NWUO_EN_BROAD)
- locaddr_str= "255.255.255.255";
- else
- locaddr_str= "0.0.0.0";
- printf(" %s:", locaddr_str);
- if ((nwuo_flags & NWUO_LOCPORT_MASK) != NWUO_LP_SEL &&
- (nwuo_flags & NWUO_LOCPORT_MASK) != NWUO_LP_SET)
- {
- printf("*");
- }
- else if ((servent= getservbyport(uf_udpopt.nwuo_locport, "udp")) !=
- NULL)
- {
- printf("%s", servent->s_name);
- }
- else
- printf("%u", ntohs(uf_udpopt.nwuo_locport));
- printf(" -> ");
- if (!(nwuo_flags & NWUO_RA_SET))
- remaddr_str= "*";
- else if (!numerical &&
- (hostent= gethostbyaddr((char *)&uf_udpopt.nwuo_remaddr,
- sizeof(ipaddr_t), AF_INET)) != NULL)
- {
- remaddr_str= hostent->h_name;
- }
- else
- remaddr_str= inet_ntoa(uf_udpopt.nwuo_remaddr);
- printf("%s:", remaddr_str);
- if (!(nwuo_flags & NWUO_RP_SET))
- printf("*");
- else if ((servent= getservbyport(uf_udpopt.nwuo_remport, "udp")) !=
- NULL)
- {
- printf("%s", servent->s_name);
- }
- else
- printf("%u", ntohs(uf_udpopt.nwuo_remport));
- printf("\n");
- }
- void usage(void)
- {
- fprintf(stderr, "Usage: %s [-a] [-n]\n", prog_name);
- exit(1);
- }
- /*
- * $PchId: udpstat.c,v 1.4 2005/01/30 01:04:57 philip Exp $
- */