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

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