git.m6w6.name Git - awesomized/libmemcached/blob - lib/memcached_connect.c

   1 #include "common.h"
   2
   3 memcached_return memcached_server_add(memcached_st *ptr, char *hostname, unsigned int port)
   4 {
   5   memcached_server_st *new_host_list;
   6   char *new_hostname;
   7   LIBMEMCACHED_MEMCACHED_SERVER_ADD_START();
   8
   9   if (!port)
  10     port= MEMCACHED_DEFAULT_PORT;
  11
  12   if (!hostname)
  13     hostname= "localhost";
  14
  15
  16   new_host_list= (memcached_server_st *)realloc(ptr->hosts, sizeof(memcached_server_st) * (ptr->number_of_hosts+1));
  17   if (!new_host_list)
  18     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  19   memset(&new_host_list[ptr->number_of_hosts], 0, sizeof(memcached_server_st));
  20
  21   if (!new_host_list)
  22     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  23
  24   ptr->hosts= new_host_list;
  25
  26   new_hostname=
  27     (char *)malloc(sizeof(char) * (strlen(hostname)+1));
  28   if (!new_hostname)
  29     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  30
  31   memset(new_hostname, 0, strlen(hostname)+1);
  32   memcpy(new_hostname, hostname, strlen(hostname));
  33   ptr->hosts[ptr->number_of_hosts].hostname= new_hostname;
  34   ptr->hosts[ptr->number_of_hosts].port= port;
  35   ptr->hosts[ptr->number_of_hosts].fd= -1;
  36   ptr->number_of_hosts++;
  37
  38   LIBMEMCACHED_MEMCACHED_SERVER_ADD_END();
  39
  40   return MEMCACHED_SUCCESS;
  41 }
  42
  43 memcached_return memcached_connect(memcached_st *ptr)
  44 {
  45   unsigned int x;
  46   struct sockaddr_in localAddr, servAddr;
  47   struct hostent *h;
  48
  49   LIBMEMCACHED_MEMCACHED_CONNECT_START();
  50
  51   if (ptr->connected == ptr->number_of_hosts)
  52     return MEMCACHED_SUCCESS;
  53
  54   if (!ptr->hosts)
  55   {
  56     return MEMCACHED_NO_SERVERS;
  57   }
  58
  59   for (x= 0; x < ptr->number_of_hosts; x++)
  60   {
  61     if (ptr->hosts[x].fd == -1)
  62     {
  63       if ((h= gethostbyname(ptr->hosts[x].hostname)) == NULL)
  64         return MEMCACHED_HOST_LOCKUP_FAILURE;
  65
  66       servAddr.sin_family= h->h_addrtype;
  67       memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
  68       servAddr.sin_port = htons(ptr->hosts[x].port);
  69
  70       /* Create the socket */
  71       if ((ptr->hosts[0].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
  72         return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
  73
  74
  75       /* bind any port number */
  76       localAddr.sin_family = AF_INET;
  77       localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
  78       localAddr.sin_port = htons(0);
  79
  80       if (bind(ptr->hosts[0].fd, (struct sockaddr *) &localAddr, sizeof(localAddr)) < 0)
  81         return(MEMCACHED_CONNECTION_BIND_FAILURE);
  82
  83       /* connect to server */
  84       if (connect(ptr->hosts[0].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
  85         return MEMCACHED_HOST_LOCKUP_FAILURE;
  86
  87       ptr->connected++;
  88     }
  89   }
  90   LIBMEMCACHED_MEMCACHED_CONNECT_END();
  91
  92   return MEMCACHED_SUCCESS;
  93 }