err.no Git - backuppcd/blob - backuppcd-notify.c

   1 #include "compat.h"
   2 #include "net.h"
   3
   4 #ifdef HAVE_SYS_SOCKET_H
   5 #include <sys/socket.h>
   6 #endif
   7 #ifdef HAVE_SYS_TYPES_H
   8 #include <sys/types.h>
   9 #endif
  10
  11 #ifndef HOST_NAME_MAX
  12 #define HOST_NAME_MAX 255
  13 #endif
  14
  15 void backuppc_notify(const char *host, const int port, const char *overridehostname) {
  16         static char *hostname = NULL;
  17         char cmdbuf[8192], *cmdbuf_p;
  18         size_t hostname_len;
  19         ssize_t send_ret;
  20         int chk_ret;
  21         int sockfd;
  22
  23         if (!host || port <= 0) {
  24                 return;
  25         }
  26
  27         if (overridehostname) {
  28                 hostname = (char *) overridehostname;
  29         }
  30
  31         if (!hostname) {
  32                 hostname_len = HOST_NAME_MAX + 1;
  33                 hostname = malloc(hostname_len);
  34                 if (hostname) {
  35                         chk_ret = gethostname(hostname, hostname_len);
  36                         if (chk_ret < 0) {
  37                                 free(hostname);
  38                                 hostname = NULL;
  39                         }
  40                 }
  41         }
  42
  43         if (!hostname) {
  44                 return;
  45         }
  46
  47         sockfd = net_connect_tcp(host, port);
  48         if (sockfd >= 0) {
  49                 /* XXX: Authentiation ? */
  50
  51                 /* Send hostname */
  52                 chk_ret = snprintf(cmdbuf, sizeof(cmdbuf), "HOST %s\n", hostname);
  53                 if (chk_ret < sizeof(cmdbuf)) {
  54                         cmdbuf_p = cmdbuf;
  55
  56                         while (chk_ret) {
  57                                 send_ret = send(sockfd, cmdbuf_p, chk_ret, 0);
  58
  59                                 if (send_ret < 0) {
  60                                         break;
  61                                 }
  62
  63                                 cmdbuf_p += send_ret;
  64                                 chk_ret -= send_ret;
  65                         }
  66                 }
  67
  68                 net_close(sockfd);
  69         }
  70
  71         if (overridehostname) {
  72                 hostname = NULL;
  73         }
  74
  75         return;
  76 }