src/internal.cc

   1
   2 /*
   3  * $Id: internal.cc,v 1.23 2001/01/12 00:37:18 wessels Exp $
   4  *
   5  * DEBUG: section 76    Internal Squid Object handling
   6  * AUTHOR: Duane, Alex, Henrik
   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
  38 /* called when we "miss" on an internal object;
  39  * generate known dynamic objects,
  40  * return HTTP_NOT_FOUND for others
  41  */
  42 void
  43 internalStart(request_t * request, StoreEntry * entry)
  44 {
  45     ErrorState *err;
  46     const char *upath = strBuf(request->urlpath);
  47     http_version_t version;
  48     debug(76, 3) ("internalStart: %s requesting '%s'\n",
  49         inet_ntoa(request->client_addr), upath);
  50     if (0 == strcmp(upath, "/squid-internal-dynamic/netdb")) {
  51         netdbBinaryExchange(entry);
  52     } else if (0 == strcmp(upath, "/squid-internal-periodic/store_digest")) {
  53 #if USE_CACHE_DIGESTS
  54         const char *msgbuf = "This cache is currently building its digest.\n";
  55 #else
  56         const char *msgbuf = "This cache does not suport Cache Digests.\n";
  57 #endif
  58         httpBuildVersion(&version, 1, 0);
  59         httpReplySetHeaders(entry->mem_obj->reply,
  60             version,
  61             HTTP_NOT_FOUND,
  62             "Not Found",
  63             "text/plain",
  64             strlen(msgbuf),
  65             squid_curtime,
  66             -2);
  67         httpReplySwapOut(entry->mem_obj->reply, entry);
  68         storeAppend(entry, msgbuf, strlen(msgbuf));
  69         storeComplete(entry);
  70     } else {
  71         debugObj(76, 1, "internalStart: unknown request:\n",
  72             request, (ObjPackMethod) & httpRequestPack);
  73         err = errorCon(ERR_INVALID_REQ, HTTP_NOT_FOUND);
  74         err->request = requestLink(request);
  75         errorAppendEntry(entry, err);
  76     }
  77 }
  78
  79 int
  80 internalCheck(const char *urlpath)
  81 {
  82     return (0 == strncmp(urlpath, "/squid-internal-", 16));
  83 }
  84
  85 int
  86 internalStaticCheck(const char *urlpath)
  87 {
  88     return (0 == strncmp(urlpath, "/squid-internal-static", 22));
  89 }
  90
  91 /*
  92  * makes internal url with a given host and port (remote internal url)
  93  */
  94 char *
  95 internalRemoteUri(const char *host, u_short port, const char *dir, const char *name)
  96 {
  97     static MemBuf mb = MemBufNULL;
  98     static char lc_host[SQUIDHOSTNAMELEN];
  99     assert(host && port && name);
 100     /* convert host name to lower case */
 101     xstrncpy(lc_host, host, SQUIDHOSTNAMELEN - 1);
 102     Tolower(lc_host);
 103     /*
 104      * append the domain in order to mirror the requests with appended
 105      * domains
 106      */
 107     if (Config.appendDomain && !strchr(lc_host, '.'))
 108         strncat(lc_host, Config.appendDomain, SQUIDHOSTNAMELEN -
 109             strlen(lc_host) - 1);
 110     /* build uri in mb */
 111     memBufReset(&mb);
 112     memBufPrintf(&mb, "http://%s", lc_host);
 113     /* append port if not default */
 114     if (port != urlDefaultPort(PROTO_HTTP))
 115         memBufPrintf(&mb, ":%d", port);
 116     if (dir)
 117         memBufPrintf(&mb, "%s", dir);
 118     memBufPrintf(&mb, "%s", name);
 119     /* return a pointer to a local static buffer */
 120     return mb.buf;
 121 }
 122
 123 /*
 124  * makes internal url with local host and port
 125  */
 126 char *
 127 internalLocalUri(const char *dir, const char *name)
 128 {
 129     return internalRemoteUri(getMyHostname(),
 130         ntohs(Config.Sockaddr.http->s.sin_port), dir, name);
 131 }
 132
 133 const char *
 134 internalHostname(void)
 135 {
 136     LOCAL_ARRAY(char, host, SQUIDHOSTNAMELEN + 1);
 137     xstrncpy(host, getMyHostname(), SQUIDHOSTNAMELEN);
 138     Tolower(host);
 139     return host;
 140 }
 141
 142 int
 143 internalHostnameIs(const char *arg)
 144 {
 145     wordlist *w;
 146     if (0 == strcmp(arg, internalHostname()))
 147         return 1;
 148     for (w = Config.hostnameAliases; w; w = w->next)
 149         if (0 == strcmp(arg, w->key))
 150             return 1;
 151     return 0;
 152 }