programs/libc/netdb.c

   1 /*
   2 Copyright (C) 2008  Mathias Gottschlag
   3
   4 Permission is hereby granted, free of charge, to any person obtaining a copy of
   5 this software and associated documentation files (the "Software"), to deal in the
   6 Software without restriction, including without limitation the rights to use,
   7 copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
   8 Software, and to permit persons to whom the Software is furnished to do so,
   9 subject to the following conditions:
  10
  11 The above copyright notice and this permission notice shall be included in all
  12 copies or substantial portions of the Software.
  13
  14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
  15 INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  16 PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  17 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  18 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  19 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20 */
  21
  22 #include <netdb.h>
  23 #include <arpa/inet.h>
  24 #include <sys/socket.h>
  25 #include <string.h>
  26 #include <stdlib.h>
  27 #include <ctype.h>
  28
  29 void endhostent(void)
  30 {
  31 }
  32 void endnetent(void)
  33 {
  34 }
  35 void endprotoent(void)
  36 {
  37 }
  38 void endservent(void)
  39 {
  40 }
  41 struct hostent *gethostbyaddr(const void *addr, size_t len, int type)
  42 {
  43         return 0;
  44 }
  45 struct hostent *gethostbyname(const char *name)
  46 {
  47         return 0;
  48 }
  49 struct hostent *gethostent(void)
  50 {
  51         return 0;
  52 }
  53 struct netent *getnetbyaddr(uint32_t net, int type)
  54 {
  55         return 0;
  56 }
  57 struct netent *getnetbyname(const char *name)
  58 {
  59         return 0;
  60 }
  61 struct netent *getnetent(void)
  62 {
  63         return 0;
  64 }
  65 struct protoent *getprotobyname(const char *name)
  66 {
  67         return 0;
  68 }
  69 struct protoent *getprotobynumber(int proto)
  70 {
  71         return 0;
  72 }
  73 struct protoent *getprotoent(void)
  74 {
  75         return 0;
  76 }
  77 struct servent *getservbyname(const char *name, const char *proto)
  78 {
  79         return 0;
  80 }
  81 struct servent *getservbyport(int port, const char *proto)
  82 {
  83         return 0;
  84 }
  85 struct servent *getservent(void)
  86 {
  87         return 0;
  88 }
  89
  90 void sethostent(int stayopen)
  91 {
  92 }
  93 void setnetent(int stayopen)
  94 {
  95 }
  96 void setprotoent(int stayopen)
  97 {
  98 }
  99 void setservent(int stayopen)
 100 {
 101 }
 102 void freeaddrinfo(struct addrinfo *info)
 103 {
 104         if (info->ai_canonname)
 105                 free(info->ai_canonname);
 106         free(info);
 107 }
 108 int getaddrinfo(const char *nodename, const char *servname, const struct addrinfo * hints, struct addrinfo ** res)
 109 {
 110         // Resolve name
 111         struct sockaddr_in addr;
 112         addr.sin_family = AF_INET;
 113         if ((nodename == 0) || !strcmp(nodename, "") || !strcmp(nodename, "localhost"))
 114         {
 115                 ((char*)&addr.sin_addr)[0] = 0;
 116                 ((char*)&addr.sin_addr)[1] = 0;
 117                 ((char*)&addr.sin_addr)[2] = 0;
 118                 ((char*)&addr.sin_addr)[3] = 0;
 119         }
 120         else
 121         {
 122                 struct hostent *host = gethostbyname(nodename);
 123                 if (!host)
 124                 {
 125                         return -1;
 126                 }
 127                 memcpy(&addr.sin_addr, host->h_addr_list[0], 4);
 128         }
 129
 130         // Get service
 131         if ((servname == 0) || !strcmp(servname, ""))
 132         {
 133                 return -1;
 134         }
 135         if (isdigit(servname[0]))
 136         {
 137                 addr.sin_port = atoi(servname);
 138         }
 139         else
 140         {
 141                 return -1;
 142         }
 143         // Fill in struct
 144         struct addrinfo *addrinfo = malloc(sizeof(struct addrinfo));
 145         memcpy(addrinfo, hints, sizeof(struct addrinfo));
 146         addrinfo->ai_family = addr.sin_family;
 147         addrinfo->ai_addrlen = sizeof(struct sockaddr_in);
 148         addrinfo->ai_addr = malloc(sizeof(struct sockaddr_in));
 149         memcpy(addrinfo->ai_addr, &addr, sizeof(addr));
 150         if (nodename)
 151                 addrinfo->ai_canonname = strdup(nodename);
 152         else
 153                 addrinfo->ai_canonname = 0;
 154         addrinfo->ai_next = 0;
 155         *res = addrinfo;
 156         return 0;
 157 }
 158
 159 const char *gai_strerror(int error)
 160 {
 161         return "";
 162 }
 163