src/ufsdump.cc

   1 /*
   2  * DEBUG: section 00    UFS Store Dump Tool
   3  * AUTHOR: Robert Collins
   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 "Generic.h"
  35 #include "mgr/Registration.h"
  36 #include "Store.h"
  37 #include "store_key_md5.h"
  38 #include "StoreMeta.h"
  39 #include "StoreMetaUnpacker.h"
  40
  41 #undef malloc
  42 #undef free
  43
  44 #include <cassert>
  45 #include <iostream>
  46 #include <stdexcept>
  47
  48 /* stub functions for parts of squid not factored to be dynamic yet */
  49 void
  50 eventAdd(const char *name, EVH * func, void *arg, double when, int, bool cbdata)
  51 {}
  52
  53 // required by storeKeyPublicByRequest*
  54 // XXX: what pulls in storeKeyPublicByRequest?
  55 const char *urlCanonical(HttpRequest *) { assert(false); return NULL; }
  56
  57 void
  58 storeAppendPrintf(StoreEntry * e, const char *fmt,...)
  59 {
  60     va_list args;
  61     va_start(args, fmt);
  62
  63     assert(false);
  64
  65     va_end(args);
  66 }
  67
  68 void
  69 Mgr::RegisterAction(char const * action, char const * desc, OBJH * handler, int pw_req_flag, int atomic) {}
  70
  71 /* MinGW needs also a stub of death() */
  72 void
  73 death(int sig)
  74 {
  75     std::cout << "Fatal: Signal " <<  sig;
  76     exit(1);
  77 }
  78
  79 void
  80 fatal(const char *message)
  81 {
  82     fprintf(stderr, "FATAL: %s\n", message);
  83     exit(1);
  84 }
  85
  86 /* end stub functions */
  87
  88 struct MetaStd {
  89     time_t timestamp;
  90     time_t lastref;
  91     time_t expires;
  92     time_t lastmod;
  93     size_t swap_file_sz;
  94     uint16_t refcount;
  95     uint16_t flags;
  96 };
  97
  98 struct MetaStdLfs {
  99     time_t timestamp;
 100     time_t lastref;
 101     time_t expires;
 102     time_t lastmod;
 103     uint64_t swap_file_sz;
 104     uint16_t refcount;
 105     uint16_t flags;
 106 };
 107
 108 struct DumpStoreMeta : public unary_function<StoreMeta, void> {
 109     DumpStoreMeta() {}
 110
 111     void operator()(StoreMeta const &x) {
 112         switch (x.getType()) {
 113
 114         case STORE_META_KEY:
 115             std::cout << "MD5: " << storeKeyText((const cache_key *)x.value) << std::endl;
 116             break;
 117
 118         case STORE_META_STD:
 119             std::cout << "STD, Size:" << ((struct MetaStd*)x.value)->swap_file_sz <<
 120                       " Flags: 0x" << std::hex << ((struct MetaStd*)x.value)->flags << std::dec <<
 121                       " Refcount: " << ((struct MetaStd*)x.value)->refcount <<
 122                       std::endl;
 123             break;
 124
 125         case STORE_META_STD_LFS:
 126             std::cout << "STD_LFS, Size: " << ((struct MetaStdLfs*)x.value)->swap_file_sz <<
 127                       " Flags: 0x" << std::hex << ((struct MetaStdLfs*)x.value)->flags << std::dec <<
 128                       " Refcount: " << ((struct MetaStdLfs*)x.value)->refcount <<
 129                       std::endl;
 130             break;
 131
 132         case STORE_META_URL:
 133             assert (((char *)x.value)[x.length - 1] == 0);
 134             std::cout << "URL: " << (char *)x.value << std::endl;
 135             break;
 136
 137         default:
 138             std::cout << "Unknown store meta type: " << (int)x.getType() <<
 139                       " of length " << x.length << std::endl;
 140             break;
 141         }
 142     }
 143 };
 144
 145 int
 146 main(int argc, char *argv[])
 147 {
 148     int fd = -1;
 149     StoreMeta *metadata = NULL;
 150
 151     try {
 152         if (argc != 2)
 153             throw std::runtime_error("No filename provided");
 154
 155         fd = open (argv[1], O_RDONLY | O_BINARY);
 156
 157         if (fd < 0)
 158             throw std::runtime_error("Could not open file.");
 159
 160         char tempbuf[SM_PAGE_SIZE];
 161
 162         int len = read(fd, tempbuf, SM_PAGE_SIZE);
 163
 164         if (len < 0)
 165             throw std::runtime_error("Could not read header into memory.");
 166
 167         close (fd);
 168
 169         fd = -1;
 170
 171         int hdr_len;
 172
 173         StoreMetaUnpacker aBuilder(tempbuf, len, &hdr_len);
 174
 175         metadata = aBuilder.createStoreMeta ();
 176
 177         cache_key key[SQUID_MD5_DIGEST_LENGTH];
 178
 179         memset(key, '\0', SQUID_MD5_DIGEST_LENGTH);
 180
 181         DumpStoreMeta dumper;
 182
 183         for_each(*metadata, dumper);
 184
 185         return 0;
 186     } catch (std::runtime_error error) {
 187         std::cout << "Failed : " << error.what() << std::endl;
 188
 189         if (fd >= 0)
 190             close(fd);
 191
 192         if (metadata)
 193             StoreMeta::FreeList(&metadata);
 194
 195         return 1;
 196     }
 197 }