src/ufsdump.cc

   1
   2 /*
   3  * $Id: ufsdump.cc,v 1.11 2007/11/15 16:47:35 wessels Exp $
   4  *
   5  * DEBUG: section 0     UFS Store Dump
   6  * AUTHOR: Robert Collins
   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 "StoreMeta.h"
  38 #include "StoreMetaUnpacker.h"
  39 #include "Store.h"
  40 #include "Generic.h"
  41 #undef malloc
  42 #undef free
  43 #include <stdexcept>
  44 #include <iostream>
  45 #include <cassert>
  46
  47 /* stub functions for parts of squid not factored to be dynamic yet */
  48 void shut_down(int)
  49 {}
  50
  51 void
  52 reconfigure(int)
  53 {}
  54
  55 #if WHENITMINIMAL
  56 void
  57 eventAdd(const char *name, EVH * func, void *arg, double when, int, bool cbdata)
  58 {}
  59
  60 #endif
  61 /* end stub functions */
  62
  63 struct MetaStd {
  64     time_t timestamp;
  65     time_t lastref;
  66     time_t expires;
  67     time_t lastmod;
  68     size_t swap_file_sz;
  69     u_short refcount;
  70     u_short flags;
  71 };
  72
  73 struct MetaStdLfs {
  74     time_t timestamp;
  75     time_t lastref;
  76     time_t expires;
  77     time_t lastmod;
  78     uint64_t swap_file_sz;
  79     u_short refcount;
  80     u_short flags;
  81 };
  82
  83 struct DumpStoreMeta : public unary_function<StoreMeta, void> {
  84     DumpStoreMeta() {}
  85
  86     void operator()(StoreMeta const &x) {
  87         switch (x.getType()) {
  88
  89         case STORE_META_KEY:
  90             std::cout << "MD5: " << storeKeyText((const cache_key *)x.value) << std::endl;
  91             break;
  92
  93         case STORE_META_STD:
  94             std::cout << "STD, Size:" << ((struct MetaStd*)x.value)->swap_file_sz <<
  95                       " Flags: 0x" << std::hex << ((struct MetaStd*)x.value)->flags << std::dec <<
  96                       " Refcount: " << ((struct MetaStd*)x.value)->refcount <<
  97                       std::endl;
  98             break;
  99
 100         case STORE_META_STD_LFS:
 101             std::cout << "STD_LFS, Size: " << ((struct MetaStdLfs*)x.value)->swap_file_sz <<
 102                       " Flags: 0x" << std::hex << ((struct MetaStdLfs*)x.value)->flags << std::dec <<
 103                       " Refcount: " << ((struct MetaStdLfs*)x.value)->refcount <<
 104                       std::endl;
 105             break;
 106
 107         case STORE_META_URL:
 108             assert (((char *)x.value)[x.length - 1] == 0);
 109             std::cout << "URL: " << (char *)x.value << std::endl;
 110             break;
 111
 112         default:
 113             std::cout << "Unknown store meta type: " << (int)x.getType() <<
 114                       " of length " << x.length << std::endl;
 115             break;
 116         }
 117     }
 118 };
 119
 120 int
 121 main(int argc, char *argv[])
 122 {
 123     int fd = -1;
 124     StoreMeta *metadata = NULL;
 125
 126     try {
 127         if (argc != 2)
 128             throw std::runtime_error("No filename provided");
 129
 130         fd = open (argv[1], O_RDONLY | O_BINARY);
 131
 132         if (fd < 0)
 133             throw std::runtime_error("Could not open file.");
 134
 135         char tempbuf[SM_PAGE_SIZE];
 136
 137         int len = read(fd, tempbuf, SM_PAGE_SIZE);
 138
 139         if (len < 0)
 140             throw std::runtime_error("Could not read header into memory.");
 141
 142         close (fd);
 143
 144         fd = -1;
 145
 146         int hdr_len;
 147
 148         StoreMetaUnpacker aBuilder(tempbuf, len, &hdr_len);
 149
 150         metadata = aBuilder.createStoreMeta ();
 151
 152         cache_key key[SQUID_MD5_DIGEST_LENGTH];
 153
 154         memset(key, '\0', SQUID_MD5_DIGEST_LENGTH);
 155
 156         DumpStoreMeta dumper;
 157
 158         for_each(*metadata, dumper);
 159
 160
 161         return 0;
 162     } catch (std::runtime_error error) {
 163         std::cout << "Failed : " << error.what() << std::endl;
 164
 165         if (fd >= 0)
 166             close(fd);
 167
 168         if (metadata)
 169             StoreMeta::FreeList(&metadata);
 170
 171         return 1;
 172     }
 173 }