src/send-announce.cc

   1 /*
   2  * DEBUG: section 27    Cache Announcer
   3  * AUTHOR: Duane Wessels
   4  *
   5  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   6  * ----------------------------------------------------------
   7  *
   8  *  Squid is the result of efforts by numerous individuals from
   9  *  the Internet community; see the CONTRIBUTORS file for full
  10  *  details.   Many organizations have provided support for Squid's
  11  *  development; see the SPONSORS file for full details.  Squid is
  12  *  Copyrighted (C) 2001 by the Regents of the University of
  13  *  California; see the COPYRIGHT file for full details.  Squid
  14  *  incorporates software developed and/or copyrighted by other
  15  *  sources; see the CREDITS file for full details.
  16  *
  17  *  This program is free software; you can redistribute it and/or modify
  18  *  it under the terms of the GNU General Public License as published by
  19  *  the Free Software Foundation; either version 2 of the License, or
  20  *  (at your option) any later version.
  21  *
  22  *  This program is distributed in the hope that it will be useful,
  23  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  *  GNU General Public License for more details.
  26  *
  27  *  You should have received a copy of the GNU General Public License
  28  *  along with this program; if not, write to the Free Software
  29  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  30  *
  31  */
  32
  33 #include "squid.h"
  34 #include "comm/Connection.h"
  35 #include "disk.h"
  36 #include "event.h"
  37 #include "fd.h"
  38 #include "fde.h"
  39 #include "globals.h"
  40 #include "ICP.h"
  41 #include "ipcache.h"
  42 #include "SquidConfig.h"
  43 #include "SquidTime.h"
  44 #include "tools.h"
  45
  46 static IPH send_announce;
  47
  48 void
  49 start_announce(void *datanotused)
  50 {
  51     if (0 == Config.onoff.announce)
  52         return;
  53
  54     if (!Comm::IsConnOpen(icpOutgoingConn))
  55         return;
  56
  57     ipcache_nbgethostbyname(Config.Announce.host, send_announce, NULL);
  58
  59     eventAdd("send_announce", start_announce, NULL, (double) Config.Announce.period, 1);
  60 }
  61
  62 static void
  63 send_announce(const ipcache_addrs *ia, const DnsLookupDetails &, void *junk)
  64 {
  65     LOCAL_ARRAY(char, tbuf, 256);
  66     LOCAL_ARRAY(char, sndbuf, BUFSIZ);
  67
  68     char *host = Config.Announce.host;
  69     char *file = NULL;
  70     unsigned short port = Config.Announce.port;
  71     int l;
  72     int n;
  73     int fd;
  74
  75     if (ia == NULL) {
  76         debugs(27, DBG_IMPORTANT, "send_announce: Unknown host '" << host << "'");
  77         return;
  78     }
  79
  80     debugs(27, DBG_IMPORTANT, "Sending Announcement to " << host);
  81     sndbuf[0] = '\0';
  82     snprintf(tbuf, 256, "cache_version SQUID/%s\n", version_string);
  83     strcat(sndbuf, tbuf);
  84     assert(Config.Sockaddr.http);
  85     snprintf(tbuf, 256, "Running on %s %d %d\n",
  86              getMyHostname(),
  87              getMyPort(),
  88              (int) Config.Port.icp);
  89     strcat(sndbuf, tbuf);
  90
  91     if (Config.adminEmail) {
  92         snprintf(tbuf, 256, "cache_admin: %s\n", Config.adminEmail);
  93         strcat(sndbuf, tbuf);
  94     }
  95
  96     snprintf(tbuf, 256, "generated %d [%s]\n",
  97              (int) squid_curtime,
  98              Time::FormatHttpd(squid_curtime));
  99     strcat(sndbuf, tbuf);
 100     l = strlen(sndbuf);
 101
 102     if ((file = Config.Announce.file) != NULL) {
 103         fd = file_open(file, O_RDONLY | O_TEXT);
 104
 105         if (fd > -1 && (n = FD_READ_METHOD(fd, sndbuf + l, BUFSIZ - l - 1)) > 0) {
 106             fd_bytes(fd, n, FD_READ);
 107             l += n;
 108             sndbuf[l] = '\0';
 109             file_close(fd);
 110         } else {
 111             debugs(50, DBG_IMPORTANT, "send_announce: " << file << ": " << xstrerror());
 112         }
 113     }
 114
 115     Ip::Address S = ia->in_addrs[0];
 116     S.port(port);
 117     assert(Comm::IsConnOpen(icpOutgoingConn));
 118
 119     if (comm_udp_sendto(icpOutgoingConn->fd, S, sndbuf, strlen(sndbuf) + 1) < 0)
 120         debugs(27, DBG_IMPORTANT, "ERROR: Failed to announce to " << S << " from " << icpOutgoingConn->local << ": " << xstrerror());
 121 }