git.m6w6.name Git - awesomized/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   memset((new_host_list + (sizeof(memcached_host_st) * ptr->number_of_hosts)) - sizeof(memcached_host_st),
  17          0, sizeof(memcached_host_st));
  18
  19   if (!new_host_list)
  20     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  21
  22   ptr->hosts= new_host_list;
  23
  24   new_hostname=
  25     (char *)malloc(sizeof(char) * (strlen(hostname)+1));
  26   if (!new_hostname)
  27     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  28
  29   memset(new_hostname, 0, strlen(hostname)+1);
  30   memcpy(new_hostname, hostname, strlen(hostname));
  31   ptr->hosts[ptr->number_of_hosts].hostname= new_hostname;
  32   ptr->hosts[ptr->number_of_hosts].port= port;
  33   ptr->hosts[ptr->number_of_hosts].fd= -1;
  34   ptr->number_of_hosts++;
  35
  36   return MEMCACHED_SUCCESS;
  37 }
  38
  39 memcached_return memcached_connect(memcached_st *ptr)
  40 {
  41   unsigned int x;
  42   struct sockaddr_in localAddr, servAddr;
  43   struct hostent *h;
  44
  45   if (ptr->connected)
  46     return MEMCACHED_SUCCESS;
  47
  48   if (!ptr->hosts)
  49   {
  50     memcached_return rc;
  51     rc= memcached_server_add(ptr, NULL, 0);
  52
  53     if (rc != MEMCACHED_SUCCESS)
  54       return rc;
  55   }
  56
  57
  58   for (x= 0; x < ptr->number_of_hosts; x++)
  59   {
  60     if ((h= gethostbyname(ptr->hosts[x].hostname)) == NULL)
  61       return MEMCACHED_HOST_LOCKUP_FAILURE;
  62
  63     servAddr.sin_family= h->h_addrtype;
  64     memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
  65     servAddr.sin_port = htons(ptr->hosts[x].port);
  66
  67     /* Create the socket */
  68     if ((ptr->hosts[0].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
  69       return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
  70
  71
  72     /* bind any port number */
  73     localAddr.sin_family = AF_INET;
  74     localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
  75     localAddr.sin_port = htons(0);
  76
  77     if (bind(ptr->hosts[0].fd, (struct sockaddr *) &localAddr, sizeof(localAddr)) < 0)
  78       return(MEMCACHED_CONNECTION_BIND_FAILURE);
  79
  80     /* connect to server */
  81     if (connect(ptr->hosts[0].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
  82       return MEMCACHED_HOST_LOCKUP_FAILURE;
  83   }
  84
  85   ptr->connected= 1;
  86
  87   return MEMCACHED_SUCCESS;
  88 }