src/send-announce.cc

   1
   2 /*
   3  * $Id$
   4  *
   5  * DEBUG: section 27    Cache Announcer
   6  * AUTHOR: Duane Wessels
   7  *
   8  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   9  * ----------------------------------------------------------
  10  *
  11  *  Squid is the result of efforts by numerous individuals from
  12  *  the Internet community; see the CONTRIBUTORS file for full
  13  *  details.   Many organizations have provided support for Squid's
  14  *  development; see the SPONSORS file for full details.  Squid is
  15  *  Copyrighted (C) 2001 by the Regents of the University of
  16  *  California; see the COPYRIGHT file for full details.  Squid
  17  *  incorporates software developed and/or copyrighted by other
  18  *  sources; see the CREDITS file for full details.
  19  *
  20  *  This program is free software; you can redistribute it and/or modify
  21  *  it under the terms of the GNU General Public License as published by
  22  *  the Free Software Foundation; either version 2 of the License, or
  23  *  (at your option) any later version.
  24  *
  25  *  This program is distributed in the hope that it will be useful,
  26  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  27  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  28  *  GNU General Public License for more details.
  29  *
  30  *  You should have received a copy of the GNU General Public License
  31  *  along with this program; if not, write to the Free Software
  32  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  33  *
  34  */
  35
  36 #include "squid.h"
  37 #include "comm/Connection.h"
  38 #include "disk.h"
  39 #include "event.h"
  40 #include "fd.h"
  41 #include "fde.h"
  42 #include "globals.h"
  43 #include "ICP.h"
  44 #include "ipcache.h"
  45 #include "protos.h"
  46 #include "SquidTime.h"
  47 #include "tools.h"
  48
  49 static IPH send_announce;
  50
  51 void
  52 start_announce(void *datanotused)
  53 {
  54     if (0 == Config.onoff.announce)
  55         return;
  56
  57     if (!Comm::IsConnOpen(icpOutgoingConn))
  58         return;
  59
  60     ipcache_nbgethostbyname(Config.Announce.host, send_announce, NULL);
  61
  62     eventAdd("send_announce", start_announce, NULL, (double) Config.Announce.period, 1);
  63 }
  64
  65 static void
  66 send_announce(const ipcache_addrs *ia, const DnsLookupDetails &, void *junk)
  67 {
  68     LOCAL_ARRAY(char, tbuf, 256);
  69     LOCAL_ARRAY(char, sndbuf, BUFSIZ);
  70
  71     char *host = Config.Announce.host;
  72     char *file = NULL;
  73     unsigned short port = Config.Announce.port;
  74     int l;
  75     int n;
  76     int fd;
  77
  78     if (ia == NULL) {
  79         debugs(27, DBG_IMPORTANT, "send_announce: Unknown host '" << host << "'");
  80         return;
  81     }
  82
  83     debugs(27, DBG_IMPORTANT, "Sending Announcement to " << host);
  84     sndbuf[0] = '\0';
  85     snprintf(tbuf, 256, "cache_version SQUID/%s\n", version_string);
  86     strcat(sndbuf, tbuf);
  87     assert(Config.Sockaddr.http);
  88     snprintf(tbuf, 256, "Running on %s %d %d\n",
  89              getMyHostname(),
  90              getMyPort(),
  91              (int) Config.Port.icp);
  92     strcat(sndbuf, tbuf);
  93
  94     if (Config.adminEmail) {
  95         snprintf(tbuf, 256, "cache_admin: %s\n", Config.adminEmail);
  96         strcat(sndbuf, tbuf);
  97     }
  98
  99     snprintf(tbuf, 256, "generated %d [%s]\n",
 100              (int) squid_curtime,
 101              Time::FormatHttpd(squid_curtime));
 102     strcat(sndbuf, tbuf);
 103     l = strlen(sndbuf);
 104
 105     if ((file = Config.Announce.file) != NULL) {
 106         fd = file_open(file, O_RDONLY | O_TEXT);
 107
 108         if (fd > -1 && (n = FD_READ_METHOD(fd, sndbuf + l, BUFSIZ - l - 1)) > 0) {
 109             fd_bytes(fd, n, FD_READ);
 110             l += n;
 111             sndbuf[l] = '\0';
 112             file_close(fd);
 113         } else {
 114             debugs(50, DBG_IMPORTANT, "send_announce: " << file << ": " << xstrerror());
 115         }
 116     }
 117
 118     Ip::Address S = ia->in_addrs[0];
 119     S.SetPort(port);
 120     assert(Comm::IsConnOpen(icpOutgoingConn));
 121
 122     if (comm_udp_sendto(icpOutgoingConn->fd, S, sndbuf, strlen(sndbuf) + 1) < 0)
 123         debugs(27, DBG_IMPORTANT, "ERROR: Failed to announce to " << S << " from " << icpOutgoingConn->local << ": " << xstrerror());
 124 }