programs/netstat/netstat.c

   1 /*
   2  * Copyright 2011-2013 André Hentschel
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #define NONAMELESSUNION
  20 #include <stdio.h>
  21 #include "netstat.h"
  22 #include <winsock2.h>
  23 #include <iphlpapi.h>
  24 #include "wine/debug.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(netstat);
  27
  28 static const WCHAR ipW[] = {'I', 'P', 0};
  29 static const WCHAR ipv6W[] = {'I', 'P', 'v', '6', 0};
  30 static const WCHAR icmpW[] = {'I', 'C', 'M', 'P', 0};
  31 static const WCHAR icmpv6W[] = {'I', 'C', 'M', 'P', 'v', '6', 0};
  32 static const WCHAR tcpW[] = {'T', 'C', 'P', 0};
  33 static const WCHAR tcpv6W[] = {'T', 'C', 'P', 'v', '6', 0};
  34 static const WCHAR udpW[] = {'U', 'D', 'P', 0};
  35 static const WCHAR udpv6W[] = {'U', 'D', 'P', 'v', '6', 0};
  36
  37 static const WCHAR fmtport[] = {'%', 'd', 0};
  38 static const WCHAR fmtip[] = {'%', 'd', '.', '%', 'd', '.', '%', 'd', '.', '%', 'd', 0};
  39 static const WCHAR fmtn[] = {'\n', 0};
  40 static const WCHAR fmtnn[] = {'\n', '%', 's', '\n', 0};
  41 static const WCHAR fmtcolon[] = {'%', 's', ':', '%', 's', 0};
  42 static const WCHAR fmttcpout[] = {' ', ' ', '%', '-', '6', 's', ' ', '%', '-', '2', '2', 's', ' ', '%', '-', '2', '2', 's', ' ', '%', 's', '\n', 0};
  43 static const WCHAR fmtudpout[] = {' ', ' ', '%', '-', '6', 's', ' ', '%', '-', '2', '2', 's', ' ', '*', ':', '*', '\n', 0};
  44 static const WCHAR fmtethout[] = {'%', '-', '2', '0', 's', ' ', '%', '1', '4', 'l', 'u', ' ', '%', '1', '5', 'l', 'u', '\n', 0};
  45 static const WCHAR fmtethoutu[] = {'%', '-', '2', '0', 's', ' ', '%', '1', '4', 'l', 'u', '\n', '\n', 0};
  46 static const WCHAR fmtethheader[] = {' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
  47                                      ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
  48                                      ' ', '%', '-', '1', '9', 's', ' ', '%', 's', '\n', '\n', 0};
  49 static const WCHAR fmttcpstat[] = {' ', ' ', '%', '-', '3', '5', 's', ' ', '=', ' ', '%', 'l', 'u', '\n', 0};
  50 static const WCHAR fmtudpstat[] = {' ', ' ', '%', '-', '2', '1', 's', ' ', '=', ' ', '%', 'l', 'u', '\n', 0};
  51
  52 static const WCHAR tcpstatesW[][16] = {
  53     {'?', '?', '?', 0},
  54     {'C', 'L', 'O', 'S', 'E', 'D', 0},
  55     {'L', 'I', 'S', 'T', 'E', 'N', 'I', 'N', 'G', 0},
  56     {'S', 'Y', 'N', '_', 'S', 'E', 'N', 'T', 0},
  57     {'S', 'Y', 'N', '_', 'R', 'C', 'V', 'D', 0},
  58     {'E', 'S', 'T', 'A', 'B', 'L', 'I', 'S', 'H', 'E', 'D', 0},
  59     {'F', 'I', 'N', '_', 'W', 'A', 'I', 'T', '1', 0},
  60     {'F', 'I', 'N', '_', 'W', 'A', 'I', 'T', '2', 0},
  61     {'C', 'L', 'O', 'S', 'E', '_', 'W', 'A', 'I', 'T', 0},
  62     {'C', 'L', 'O', 'S', 'I', 'N', 'G', 0},
  63     {'L', 'A', 'S', 'T', '_', 'A', 'C', 'K', 0},
  64     {'T', 'I', 'M', 'E', '_', 'W', 'A', 'I', 'T', 0},
  65     {'D', 'E', 'L', 'E', 'T', 'E', '_', 'T', 'C', 'B', 0},
  66 };
  67
  68 /* =========================================================================
  69  *  Output a unicode string. Ideally this will go to the console
  70  *  and hence required WriteConsoleW to output it, however if file i/o is
  71  *  redirected, it needs to be WriteFile'd using OEM (not ANSI) format
  72  * ========================================================================= */
  73 static int WINAPIV NETSTAT_wprintf(const WCHAR *format, ...)
  74 {
  75     static WCHAR *output_bufW = NULL;
  76     static char  *output_bufA = NULL;
  77     static BOOL  toConsole    = TRUE;
  78     static BOOL  traceOutput  = FALSE;
  79 #define MAX_WRITECONSOLE_SIZE 65535
  80
  81     va_list parms;
  82     DWORD   nOut;
  83     int len;
  84     DWORD   res = 0;
  85
  86     /*
  87      * Allocate buffer to use when writing to console
  88      * Note: Not freed - memory will be allocated once and released when
  89      * netstat ends
  90      */
  91
  92     if (!output_bufW) output_bufW = HeapAlloc(GetProcessHeap(), 0,
  93                                               MAX_WRITECONSOLE_SIZE*sizeof(WCHAR));
  94     if (!output_bufW) {
  95         WINE_FIXME("Out of memory - could not allocate 2 x 64 KB buffers\n");
  96         return 0;
  97     }
  98
  99     va_start(parms, format);
 100     len = wvsprintfW(output_bufW, format, parms);
 101     va_end(parms);
 102
 103     /* Try to write as unicode all the time we think it's a console */
 104     if (toConsole) {
 105         res = WriteConsoleW(GetStdHandle(STD_OUTPUT_HANDLE),
 106                             output_bufW, len, &nOut, NULL);
 107     }
 108
 109     /* If writing to console has failed (ever) we assume it's file
 110        i/o so convert to OEM codepage and output                  */
 111     if (!res) {
 112         BOOL usedDefaultChar = FALSE;
 113         DWORD convertedChars;
 114
 115         toConsole = FALSE;
 116
 117         /*
 118          * Allocate buffer to use when writing to file. Not freed, as above
 119          */
 120         if (!output_bufA) output_bufA = HeapAlloc(GetProcessHeap(), 0,
 121                                                   MAX_WRITECONSOLE_SIZE);
 122         if (!output_bufA) {
 123             WINE_FIXME("Out of memory - could not allocate 2 x 64 KB buffers\n");
 124             return 0;
 125         }
 126
 127         /* Convert to OEM, then output */
 128         convertedChars = WideCharToMultiByte(GetOEMCP(), 0, output_bufW,
 129                                              len, output_bufA, MAX_WRITECONSOLE_SIZE,
 130                                              "?", &usedDefaultChar);
 131         WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), output_bufA, convertedChars,
 132                   &nOut, FALSE);
 133     }
 134
 135     /* Trace whether screen or console */
 136     if (!traceOutput) {
 137         WINE_TRACE("Writing to console? (%d)\n", toConsole);
 138         traceOutput = TRUE;
 139     }
 140     return nOut;
 141 }
 142
 143 static WCHAR *NETSTAT_load_message(UINT id) {
 144     static WCHAR msg[2048];
 145     static const WCHAR failedW[]  = {'F','a','i','l','e','d','!','\0'};
 146
 147     if (!LoadStringW(GetModuleHandleW(NULL), id, msg, ARRAY_SIZE(msg))) {
 148         WINE_FIXME("LoadString failed with %ld\n", GetLastError());
 149         lstrcpyW(msg, failedW);
 150     }
 151     return msg;
 152 }
 153
 154 static WCHAR *NETSTAT_port_name(UINT port, WCHAR name[])
 155 {
 156     /* FIXME: can we get the name? */
 157     swprintf(name, 32, fmtport, htons((WORD)port));
 158     return name;
 159 }
 160
 161 static WCHAR *NETSTAT_host_name(UINT ip, WCHAR name[])
 162 {
 163     UINT nip;
 164
 165     /* FIXME: can we get the name? */
 166     nip = htonl(ip);
 167     swprintf(name, MAX_HOSTNAME_LEN, fmtip,
 168              (nip >> 24) & 0xFF, (nip >> 16) & 0xFF, (nip >> 8) & 0xFF, (nip) & 0xFF);
 169     return name;
 170 }
 171
 172 static void NETSTAT_conn_header(void)
 173 {
 174     WCHAR local[22], remote[22], state[22];
 175     NETSTAT_wprintf(fmtnn, NETSTAT_load_message(IDS_TCP_ACTIVE_CONN));
 176     NETSTAT_wprintf(fmtn);
 177     lstrcpyW(local, NETSTAT_load_message(IDS_TCP_LOCAL_ADDR));
 178     lstrcpyW(remote, NETSTAT_load_message(IDS_TCP_REMOTE_ADDR));
 179     lstrcpyW(state, NETSTAT_load_message(IDS_TCP_STATE));
 180     NETSTAT_wprintf(fmttcpout, NETSTAT_load_message(IDS_TCP_PROTO), local, remote, state);
 181 }
 182
 183 static void NETSTAT_eth_stats(void)
 184 {
 185     PMIB_IFTABLE table;
 186     DWORD err, size, i;
 187     DWORD octets[2], ucastpkts[2], nucastpkts[2], discards[2], errors[2], unknown;
 188     WCHAR recv[19];
 189
 190     size = sizeof(MIB_IFTABLE);
 191     do
 192     {
 193         table = HeapAlloc(GetProcessHeap(), 0, size);
 194         err = GetIfTable(table, &size, FALSE);
 195         if (err != NO_ERROR) HeapFree(GetProcessHeap(), 0, table);
 196     } while (err == ERROR_INSUFFICIENT_BUFFER);
 197
 198     if (err) return;
 199
 200     NETSTAT_wprintf(NETSTAT_load_message(IDS_ETH_STAT));
 201     NETSTAT_wprintf(fmtn);
 202     NETSTAT_wprintf(fmtn);
 203     lstrcpyW(recv, NETSTAT_load_message(IDS_ETH_RECV));
 204     NETSTAT_wprintf(fmtethheader, recv, NETSTAT_load_message(IDS_ETH_SENT));
 205
 206     octets[0] = octets[1] = 0;
 207     ucastpkts[0] = ucastpkts[1] = 0;
 208     nucastpkts[0] = nucastpkts[1] = 0;
 209     discards[0] = discards[1] = 0;
 210     errors[0] = errors[1] = 0;
 211     unknown = 0;
 212
 213     for (i = 0; i < table->dwNumEntries; i++)
 214     {
 215         octets[0] += table->table[i].dwInOctets;
 216         octets[1] += table->table[i].dwOutOctets;
 217         ucastpkts[0] += table->table[i].dwInUcastPkts;
 218         ucastpkts[1] += table->table[i].dwOutUcastPkts;
 219         nucastpkts[0] += table->table[i].dwInNUcastPkts;
 220         nucastpkts[1] += table->table[i].dwOutNUcastPkts;
 221         discards[0] += table->table[i].dwInDiscards;
 222         discards[1] += table->table[i].dwOutDiscards;
 223         errors[0] += table->table[i].dwInErrors;
 224         errors[1] += table->table[i].dwOutErrors;
 225         unknown += table->table[i].dwInUnknownProtos;
 226     }
 227
 228     NETSTAT_wprintf(fmtethout, NETSTAT_load_message(IDS_ETH_BYTES), octets[0], octets[1]);
 229     NETSTAT_wprintf(fmtethout, NETSTAT_load_message(IDS_ETH_UNICAST), ucastpkts[0], ucastpkts[1]);
 230     NETSTAT_wprintf(fmtethout, NETSTAT_load_message(IDS_ETH_NUNICAST), nucastpkts[0], nucastpkts[1]);
 231     NETSTAT_wprintf(fmtethout, NETSTAT_load_message(IDS_ETH_DISCARDS), discards[0], discards[1]);
 232     NETSTAT_wprintf(fmtethout, NETSTAT_load_message(IDS_ETH_ERRORS), errors[0], errors[1]);
 233     NETSTAT_wprintf(fmtethoutu, NETSTAT_load_message(IDS_ETH_UNKNOWN), unknown);
 234
 235     HeapFree(GetProcessHeap(), 0, table);
 236 }
 237
 238 static void NETSTAT_tcp_table(void)
 239 {
 240     PMIB_TCPTABLE table;
 241     DWORD err, size, i;
 242     WCHAR HostIp[MAX_HOSTNAME_LEN], HostPort[32];
 243     WCHAR RemoteIp[MAX_HOSTNAME_LEN], RemotePort[32];
 244     WCHAR Host[MAX_HOSTNAME_LEN + 32];
 245     WCHAR Remote[MAX_HOSTNAME_LEN + 32];
 246
 247     size = sizeof(MIB_TCPTABLE);
 248     do
 249     {
 250         table = HeapAlloc(GetProcessHeap(), 0, size);
 251         err = GetTcpTable(table, &size, TRUE);
 252         if (err != NO_ERROR) HeapFree(GetProcessHeap(), 0, table);
 253     } while (err == ERROR_INSUFFICIENT_BUFFER);
 254
 255     if (err) return;
 256
 257     for (i = 0; i < table->dwNumEntries; i++)
 258     {
 259         if ((table->table[i].u.dwState ==  MIB_TCP_STATE_CLOSE_WAIT) ||
 260             (table->table[i].u.dwState ==  MIB_TCP_STATE_ESTAB) ||
 261             (table->table[i].u.dwState ==  MIB_TCP_STATE_TIME_WAIT))
 262         {
 263             NETSTAT_host_name(table->table[i].dwLocalAddr, HostIp);
 264             NETSTAT_port_name(table->table[i].dwLocalPort, HostPort);
 265             NETSTAT_host_name(table->table[i].dwRemoteAddr, RemoteIp);
 266             NETSTAT_port_name(table->table[i].dwRemotePort, RemotePort);
 267
 268             swprintf(Host, ARRAY_SIZE(Host), fmtcolon, HostIp, HostPort);
 269             swprintf(Remote, ARRAY_SIZE(Remote), fmtcolon, RemoteIp, RemotePort);
 270             NETSTAT_wprintf(fmttcpout, tcpW, Host, Remote, tcpstatesW[table->table[i].u.dwState]);
 271         }
 272     }
 273     HeapFree(GetProcessHeap(), 0, table);
 274 }
 275
 276 static void NETSTAT_tcp_stats(void)
 277 {
 278     MIB_TCPSTATS stats;
 279
 280     if (GetTcpStatistics(&stats) == NO_ERROR)
 281     {
 282         NETSTAT_wprintf(fmtnn, NETSTAT_load_message(IDS_TCP_STAT));
 283         NETSTAT_wprintf(fmtn);
 284         NETSTAT_wprintf(fmttcpstat, NETSTAT_load_message(IDS_TCP_ACTIVE_OPEN), stats.dwActiveOpens);
 285         NETSTAT_wprintf(fmttcpstat, NETSTAT_load_message(IDS_TCP_PASSIV_OPEN), stats.dwPassiveOpens);
 286         NETSTAT_wprintf(fmttcpstat, NETSTAT_load_message(IDS_TCP_FAILED_CONN), stats.dwAttemptFails);
 287         NETSTAT_wprintf(fmttcpstat, NETSTAT_load_message(IDS_TCP_RESET_CONN),  stats.dwEstabResets);
 288         NETSTAT_wprintf(fmttcpstat, NETSTAT_load_message(IDS_TCP_CURR_CONN),   stats.dwCurrEstab);
 289         NETSTAT_wprintf(fmttcpstat, NETSTAT_load_message(IDS_TCP_SEGM_RECV),   stats.dwInSegs);
 290         NETSTAT_wprintf(fmttcpstat, NETSTAT_load_message(IDS_TCP_SEGM_SENT),   stats.dwOutSegs);
 291         NETSTAT_wprintf(fmttcpstat, NETSTAT_load_message(IDS_TCP_SEGM_RETRAN), stats.dwRetransSegs);
 292     }
 293 }
 294
 295 static void NETSTAT_udp_table(void)
 296 {
 297     PMIB_UDPTABLE table;
 298     DWORD err, size, i;
 299     WCHAR HostIp[MAX_HOSTNAME_LEN], HostPort[32];
 300     WCHAR Host[MAX_HOSTNAME_LEN + 32];
 301
 302     size = sizeof(MIB_UDPTABLE);
 303     do
 304     {
 305         table = HeapAlloc(GetProcessHeap(), 0, size);
 306         err = GetUdpTable(table, &size, TRUE);
 307         if (err != NO_ERROR) HeapFree(GetProcessHeap(), 0, table);
 308     } while (err == ERROR_INSUFFICIENT_BUFFER);
 309
 310     if (err) return;
 311
 312     for (i = 0; i < table->dwNumEntries; i++)
 313     {
 314         NETSTAT_host_name(table->table[i].dwLocalAddr, HostIp);
 315         NETSTAT_port_name(table->table[i].dwLocalPort, HostPort);
 316
 317         swprintf(Host, ARRAY_SIZE(Host), fmtcolon, HostIp, HostPort);
 318         NETSTAT_wprintf(fmtudpout, udpW, Host);
 319     }
 320     HeapFree(GetProcessHeap(), 0, table);
 321 }
 322
 323 static void NETSTAT_udp_stats(void)
 324 {
 325     MIB_UDPSTATS stats;
 326
 327     if (GetUdpStatistics(&stats) == NO_ERROR)
 328     {
 329         NETSTAT_wprintf(fmtnn, NETSTAT_load_message(IDS_UDP_STAT));
 330         NETSTAT_wprintf(fmtn);
 331         NETSTAT_wprintf(fmtudpstat, NETSTAT_load_message(IDS_UDP_DGRAMS_RECV), stats.dwInDatagrams);
 332         NETSTAT_wprintf(fmtudpstat, NETSTAT_load_message(IDS_UDP_NO_PORTS), stats.dwNoPorts);
 333         NETSTAT_wprintf(fmtudpstat, NETSTAT_load_message(IDS_UDP_RECV_ERRORS), stats.dwInErrors);
 334         NETSTAT_wprintf(fmtudpstat, NETSTAT_load_message(IDS_UDP_DGRAMS_SENT),  stats.dwOutDatagrams);
 335     }
 336 }
 337
 338 static NETSTATPROTOCOLS NETSTAT_get_protocol(WCHAR name[])
 339 {
 340     if (!wcsicmp(name, ipW)) return PROT_IP;
 341     if (!wcsicmp(name, ipv6W)) return PROT_IPV6;
 342     if (!wcsicmp(name, icmpW)) return PROT_ICMP;
 343     if (!wcsicmp(name, icmpv6W)) return PROT_ICMPV6;
 344     if (!wcsicmp(name, tcpW)) return PROT_TCP;
 345     if (!wcsicmp(name, tcpv6W)) return PROT_TCPV6;
 346     if (!wcsicmp(name, udpW)) return PROT_UDP;
 347     if (!wcsicmp(name, udpv6W)) return PROT_UDPV6;
 348     return PROT_UNKNOWN;
 349 }
 350
 351 int __cdecl wmain(int argc, WCHAR *argv[])
 352 {
 353     WSADATA wsa_data;
 354     BOOL output_stats = FALSE;
 355
 356     if (WSAStartup(MAKEWORD(2, 2), &wsa_data))
 357     {
 358         WINE_ERR("WSAStartup failed: %d\n", WSAGetLastError());
 359         return 1;
 360     }
 361
 362     if (argc == 1)
 363     {
 364         /* No options */
 365         NETSTAT_conn_header();
 366         NETSTAT_tcp_table();
 367         return 0;
 368     }
 369
 370     while (argv[1] && argv[1][0] == '-')
 371     {
 372         switch (argv[1][1])
 373         {
 374         case 'a':
 375             NETSTAT_conn_header();
 376             NETSTAT_tcp_table();
 377             NETSTAT_udp_table();
 378             return 0;
 379         case 'e':
 380             NETSTAT_eth_stats();
 381             return 0;
 382         case 's':
 383             output_stats = TRUE;
 384             break;
 385         case 'p':
 386             argv++; argc--;
 387             if (argc == 1) return 1;
 388             switch (NETSTAT_get_protocol(argv[1]))
 389             {
 390                 case PROT_TCP:
 391                     if (output_stats)
 392                         NETSTAT_tcp_stats();
 393                     NETSTAT_conn_header();
 394                     NETSTAT_tcp_table();
 395                     break;
 396                 case PROT_UDP:
 397                     if (output_stats)
 398                         NETSTAT_udp_stats();
 399                     NETSTAT_conn_header();
 400                     NETSTAT_udp_table();
 401                     break;
 402                 default:
 403                     WINE_FIXME("Protocol not yet implemented: %s\n", debugstr_w(argv[1]));
 404             }
 405             return 0;
 406         default:
 407             WINE_FIXME("Unknown option: %s\n", debugstr_w(argv[1]));
 408             return 1;
 409         }
 410         argv++; argc--;
 411     }
 412
 413     if (output_stats)
 414     {
 415         NETSTAT_tcp_stats();
 416         NETSTAT_udp_stats();
 417     }
 418
 419     return 0;
 420 }