src/msw/wince/net.cpp

   1 // Copyright 1998, Ben Goetter.  All rights reserved.
   2
   3 /*
   4  patch holes in winsock
   5
   6   WCE 2.0 lacks many of the 'database' winsock routines.
   7   Stub just enough them for ss.dll.
   8
   9   getprotobynumber
  10   getservbyport
  11   getservbyname
  12
  13 */
  14
  15 // For compilers that support precompilation, includes "wx.h".
  16 #include "wx/wxprec.h"
  17
  18 #ifdef __BORLANDC__
  19     #pragma hdrstop
  20 #endif
  21
  22 #include "wx/msw/wrapwin.h"
  23 #include <tchar.h>
  24 #include <winsock.h>
  25 #include <string.h>
  26 #include "wx/msw/wince/net.h"
  27
  28
  29 #define CCH_MAX_PROTO 4
  30
  31 static struct protoent RgProtoEnt[] =
  32 {
  33  { "tcp", {NULL}, 6 },
  34  { "udp", {NULL}, 17 },
  35  { "icmp", {NULL}, 1 },
  36  { "ip", {NULL}, 0 },
  37  { NULL, {NULL}, 0 }
  38 };
  39
  40
  41 #define CCH_MAX_SERV 8
  42
  43 // Ordered by most likely to be requested.
  44 // Assumes that a service available on different protocols
  45 // will use the same port number on each protocol.
  46 // Should that be no longer the case,
  47 // remove the fFoundOnce code from getservbyXxx fcns.
  48
  49 // This table keeps port numbers in host byte order.
  50
  51 static struct servent RgServEnt[] =
  52 {
  53  { "ftp", {NULL}, 21, "tcp" },
  54  { "ftp-data", {NULL}, 20, "tcp" },
  55  { "telnet", {NULL}, 23, "tcp" },
  56  { "smtp", {NULL}, 25, "tcp" },
  57  { "http", {NULL}, 80, "tcp" },
  58  { "http", {NULL}, 80, "udp" },
  59  { "pop", {NULL}, 109, "tcp" },
  60  { "pop2", {NULL}, 109, "tcp" },
  61  { "pop3", {NULL}, 110, "tcp" },
  62  { "nntp", {NULL}, 119, "tcp" },
  63  { "finger", {NULL}, 79, "tcp" },
  64  /* include most of the simple TCP services for testing */
  65  { "echo", {NULL}, 7, "tcp" },
  66  { "echo", {NULL}, 7, "udp" },
  67  { "discard", {NULL}, 9, "tcp" },
  68  { "discard", {NULL}, 9, "udp" },
  69  { "chargen", {NULL}, 19, "tcp" },
  70  { "chargen", {NULL}, 19, "udp" },
  71  { "systat", {NULL}, 11, "tcp" },
  72  { "systat", {NULL}, 11, "udp" },
  73  { "daytime", {NULL}, 13, "tcp" },
  74  { "daytime", {NULL}, 13, "udp" },
  75  { "netstat", {NULL}, 15, "tcp" },
  76  { "qotd", {NULL}, 17, "tcp" },
  77  { "qotd", {NULL}, 17, "udp" },
  78  { NULL, {NULL}, 0, NULL }
  79 };
  80
  81 // Since table kept in host byte order,
  82 // return this element to callers
  83
  84 static struct servent ServEntReturn = {0};
  85
  86 // Because CE doesn't have _stricmp - that's why.
  87
  88 static void strcpyLC(char* szDst, const char* szSrc, int cch)
  89 {
  90  int i;
  91  char ch;
  92  for (i = 0, ch = szSrc[i]; i < cch && ch != 0; ch = szSrc[++i])
  93  {
  94   szDst[i] = (ch >= 'A' && ch <= 'Z') ? (ch + ('a'-'A')) : ch;
  95  } szDst[i] = 0;
  96 }
  97
  98
  99 struct servent * WINSOCKAPI getservbyport(int port, const char * proto)
 100 {
 101
 102  port = ntohs((unsigned short)port); // arrives in network byte order
 103  struct servent *ps = &RgServEnt[0];
 104  BOOL fFoundOnce = FALSE; // flag to short-circuit search through rest of db
 105
 106  // Make a lowercase version for comparison
 107  // truncate to 1 char longer than any value in table
 108  char szProtoLC[CCH_MAX_PROTO+2];
 109  if (NULL != proto)
 110   strcpyLC(szProtoLC, proto, CCH_MAX_PROTO+1);
 111
 112  while (NULL != ps->s_name)
 113  {
 114   if (port == ps->s_port)
 115   {
 116    fFoundOnce = TRUE;
 117    if (NULL == proto || !strcmp(szProtoLC, ps->s_proto))
 118    {
 119     ServEntReturn = *ps;
 120     ServEntReturn.s_port = htons(ps->s_port);
 121     return &ServEntReturn;
 122    }
 123   }
 124   else if (fFoundOnce)
 125    break;
 126   ++ps;
 127  } return NULL;
 128 }
 129
 130
 131 struct servent * WINSOCKAPI getservbyname(const char * name,
 132                                           const char * proto)
 133 {
 134  struct servent *ps = &RgServEnt[0];
 135  BOOL fFoundOnce = FALSE; // flag to short-circuit search through rest of db
 136
 137  // Make lowercase versions for comparisons
 138  // truncate to 1 char longer than any value in table
 139  char szNameLC[CCH_MAX_SERV+2];
 140  strcpyLC(szNameLC, name, CCH_MAX_SERV+1);
 141  char szProtoLC[CCH_MAX_PROTO+2];
 142  if (NULL != proto)
 143   strcpyLC(szProtoLC, proto, CCH_MAX_PROTO+1);
 144
 145  while (NULL != ps->s_name)
 146  {
 147   if (!strcmp(szNameLC, ps->s_name))
 148   {
 149    fFoundOnce = TRUE;
 150    if (NULL == proto || !strcmp(szProtoLC, ps->s_proto))
 151    {
 152     ServEntReturn = *ps;
 153     ServEntReturn.s_port = htons(ps->s_port);
 154     return &ServEntReturn;
 155    }
 156   }
 157   else if (fFoundOnce)
 158    break;
 159   ++ps;
 160  } return NULL;
 161 }
 162
 163
 164 struct protoent * WINSOCKAPI getprotobynumber(int proto)
 165 {
 166  struct protoent *pr = &RgProtoEnt[0];
 167  while (NULL != pr->p_name)
 168  {
 169   if (proto == pr->p_proto)
 170    return pr;
 171   ++pr;
 172  } return NULL;
 173 }
 174