net/sockaddr.c

   1 #include <sys/types.h>
   2 #include <sys/socket.h>
   3 #include <sys/un.h>
   4 #include <netinet/in.h>
   5 #include <stdlib.h>
   6 #include "sanitise.h"
   7 #include "compat.h"
   8 #include "net.h"
   9 #include "maps.h"
  10 #include "config.h"
  11 #include "random.h"
  12 #include "params.h"     // do_specific_proto
  13 #include "utils.h"      // ARRAY_SIZE
  14
  15 struct sa_func_entry {
  16         unsigned int pf;
  17         void (*func)(struct sockaddr **addr, socklen_t *addrlen);
  18 };
  19
  20 static const struct sa_func_entry sa_funcs[] = {
  21 //TODO  { .pf = PF_UNSPEC, .func = &unspec_gen_sockaddr },
  22         { .pf = PF_UNIX, .func = &unix_gen_sockaddr },
  23         { .pf = PF_INET, .func = &ipv4_gen_sockaddr },
  24         { .pf = PF_AX25, .func = &ax25_gen_sockaddr },
  25         { .pf = PF_IPX, .func = &ipx_gen_sockaddr },
  26         { .pf = PF_APPLETALK, .func = &atalk_gen_sockaddr },
  27 //TODO  { .pf = PF_NETROM, .func = &netrom_gen_sockaddr },
  28 //TODO  { .pf = PF_BRIDGE, .func = &bridge_gen_sockaddr },
  29         { .pf = PF_ATMPVC, .func = &atmpvc_gen_sockaddr },
  30         { .pf = PF_X25, .func = &x25_gen_sockaddr },
  31         { .pf = PF_INET6, .func = &ipv6_gen_sockaddr },
  32         { .pf = PF_ROSE, .func = &rose_gen_sockaddr },
  33         { .pf = PF_DECnet, .func = &decnet_gen_sockaddr },
  34         { .pf = PF_NETBEUI, .func = &llc_gen_sockaddr },
  35 //TODO  { .pf = PF_SECURITY, .func = &security_gen_sockaddr },
  36 //TODO  { .pf = PF_KEY, .func = &key_gen_sockaddr },
  37         { .pf = PF_NETLINK, .func = &netlink_gen_sockaddr },
  38         { .pf = PF_PACKET, .func = &packet_gen_sockaddr },
  39 //TODO  { .pf = PF_ASH, .func = &ash_gen_sockaddr },
  40         { .pf = PF_ECONET, .func = &econet_gen_sockaddr },
  41         { .pf = PF_ATMSVC, .func = &atmsvc_gen_sockaddr },
  42         { .pf = PF_RDS, .func = &rds_gen_sockaddr },
  43 //TODO  { .pf = PF_SNA, .func = &sna_gen_sockaddr },
  44         { .pf = PF_IRDA, .func = &irda_gen_sockaddr },
  45         { .pf = PF_PPPOX, .func = &pppox_gen_sockaddr },
  46 //TODO  { .pf = PF_WANPIPE, .func = &wanpipe_gen_sockaddr },
  47         { .pf = PF_LLC, .func = &llc_gen_sockaddr },
  48         { .pf = PF_CAN, .func = &can_gen_sockaddr },
  49         { .pf = PF_TIPC, .func = &tipc_gen_sockaddr },
  50 //TODO  { .pf = PF_BLUETOOTH, .func = &bluetooth_gen_sockaddr },
  51 //TODO  { .pf = PF_IUCV, .func = &iucv_gen_sockaddr },
  52 //TODO  { .pf = PF_RXRPC, .func = &rxrpc_gen_sockaddr },
  53 //TODO  { .pf = PF_ISDN, .func = &isdn_gen_sockaddr },
  54         { .pf = PF_PHONET, .func = &phonet_gen_sockaddr },
  55 //TODO  { .pf = PF_IEEE802154, .func = &ieee802154_gen_sockaddr },
  56 #ifdef USE_CAIF
  57         { .pf = PF_CAIF, .func = &caif_gen_sockaddr },
  58 #endif
  59 #ifdef USE_IF_ALG
  60         { .pf = PF_ALG, .func = &alg_gen_sockaddr },
  61 #endif
  62         { .pf = PF_NFC, .func = &nfc_gen_sockaddr },
  63 //TODO  { .pf = PF_VSOCK, .func = &vsock_gen_sockaddr },
  64 };
  65
  66 void generate_sockaddr(struct sockaddr **addr, socklen_t *addrlen, int pf)
  67 {
  68         unsigned int i;
  69
  70         /* If we want sockets of a specific type, we'll want sockaddrs that match. */
  71         if (do_specific_proto == TRUE)
  72                 pf = specific_proto;
  73
  74         /* If we got no hint passed down, pick a random proto. */
  75         if (pf == -1)
  76                 pf = rand() % TRINITY_PF_MAX;
  77
  78         for (i = 0; i < ARRAY_SIZE(sa_funcs); i++) {
  79                 if (sa_funcs[i].pf == (unsigned int) pf) {
  80                         sa_funcs[i].func(addr, addrlen);
  81                         return;
  82                 }
  83         }
  84
  85         /* Make something up for unknown protocols. */
  86         *addr = (struct sockaddr *) page_rand;
  87         *addrlen = rand() % 100;
  88 }