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gecko-dev/network/cache/mkextcac.c

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* Created: Lou Montulli */
/* Modifications/Additions: Gagan Saksena */
/* Please leave outside of ifdef for windows precompiled headers. */
#ifdef MOZILLA_CLIENT
#include "xp.h"
#include "mktrace.h"
#include "mkcache.h"
#include "glhist.h"
#include "xp_hash.h"
#include "xp_mcom.h"
#include "client.h"
#include "mkgeturl.h"
#include "mkstream.h"
#include "secnav.h"
#include "extcache.h"
#include "mkextcac.h"
#include "prmem.h"
#include "plstr.h"
#include "timing.h"
/* For 197 java hookup */
#include "jri.h"
#ifdef PROFILE
#pragma profile on
#endif
/* for XP_GetString() */
#include "xpgetstr.h"
extern int XP_DATABASE_CANT_BE_VALIDATED_MISSING_NAME_ENTRY;
extern int XP_DB_SELECTED_DB_NAMED;
extern int XP_REQUEST_EXTERNAL_CACHE;
PRIVATE XP_List * ext_cache_database_list = 0;
PRIVATE XP_Bool AtLeastOneOpenCache = FALSE;
/* ************************************ Defines ************************************** */
#define SAR_CACHE_INFO_STRING "CACHE_ExternalSARCacheNameString"
#define EXTCACHE 1
#define SARCACHE 2
#define SUCCESS 0
#define FAILURE -1
#define MIN_MAX_SIZE 1000
/* ************************************ Proto's ************************************** */
/* Modified existing functions to call these (read Cut n Paste with passed in args) */
PRIVATE void cache_ReadCacheInfo(XP_File fp, XP_List **list_ptr, int type);
PRIVATE void cache_SaveCacheInfo(XP_File fp, XP_List *list_ptr, int type);
PRIVATE void cache_SaveSARCacheInfo(void);
/* Newly written functions */
PRIVATE int cache_PutSARCacheInfoIntoDB(ExtCacheDBInfo *db_info);
PRIVATE ExtCacheDBInfo * cache_GetSARCacheInfoFromDB(ExtCacheDBInfo *db_info);
MODULE_PRIVATE DBT * cache_ExtCacheDBInfoStructToDBData(ExtCacheDBInfo * old_obj);
MODULE_PRIVATE ExtCacheDBInfo * cache_DBDataToExtCacheDBInfoStruct(DBT * db_obj);
MODULE_PRIVATE void cache_freeExtCacheDBInfoObj (ExtCacheDBInfo * cache_obj);
/* ************************************ Variables ************************************** */
PRIVATE XP_List * SAR_cache_database_list = 0;
PRIVATE XP_Bool SARCacheIndexOpen = FALSE;
/* close an external cache
*/
PRIVATE void
net_CloseExtCacheFat(ExtCacheDBInfo *db_info)
{
if(db_info->database)
{
(*db_info->database->close)(db_info->database);
db_info->database = 0;
}
}
PRIVATE char *
net_GetExtCacheNameFromDB(ExtCacheDBInfo *db_info)
{
DBT key;
DBT data;
if(!db_info->database)
return NULL;
key.data = EXT_CACHE_NAME_STRING;
key.size = PL_strlen(EXT_CACHE_NAME_STRING);
if(0 == (*db_info->database->get)(db_info->database, &key, &data, 0))
{
/* make sure it's a valid cstring */
char *name = (char *)data.data;
if(name[data.size-1] == '\0')
return(PL_strdup(name));
else
return(NULL);
}
return(NULL);
}
/* read/open an External Cache File allocation table.
*
* Returns a True if successfully opened
* Returns False if not.
*/
PRIVATE XP_Bool
net_OpenExtCacheFat(MWContext *ctxt, ExtCacheDBInfo *db_info)
{
char *slash;
char *db_name;
XP_Bool close_db=FALSE;
if(!db_info->database)
{
/* @@@ add .db to the end of the files
*/
char* filename = WH_FilePlatformName(db_info->filename);
db_info->database = dbopen(filename,
O_RDONLY,
0600,
DB_HASH,
0);
#ifdef XP_PC
/* This is probably the last checkin into Akbar */
/* What really needs to be fixed is that Warren's implementation */
/* of WH_FilePlatformName needs to return a malloc'd string */
/* Right now, on Mac & X, it does not. See xp_file.c */
PR_FREEIF(filename);
#endif
if(!db_info->database)
return(FALSE);
else
AtLeastOneOpenCache = TRUE;
StrAllocCopy(db_info->path, db_info->filename);
/* figure out the path to the database */
#ifdef XP_PC
slash = PL_strrchr(db_info->path, '\\');
#elif defined(XP_MAC)
slash = PL_strrchr(db_info->path, '/');
#else
slash = PL_strrchr(db_info->path, '/');
#endif
if(slash)
{
*(slash+1) = '\0';
}
else
{
*db_info->path = '\0';
}
db_name = net_GetExtCacheNameFromDB(db_info);
if(!db_name)
{
close_db = !FE_Confirm(ctxt,
XP_GetString( XP_DATABASE_CANT_BE_VALIDATED_MISSING_NAME_ENTRY ) );
}
else if(PL_strcmp(db_name, db_info->name))
{
char buffer[2048];
PR_snprintf(buffer, sizeof(buffer),
XP_GetString( XP_DB_SELECTED_DB_NAMED ),
db_name, db_info->name);
close_db = !FE_Confirm(ctxt, buffer);
}
if(close_db)
{
(*db_info->database->close)(db_info->database);
db_info->database = 0;
return(FALSE);
}
}
return(TRUE);
}
PRIVATE void
net_SaveExtCacheInfo(void)
{
XP_File fp;
XP_List *list_ptr;
fp = XP_FileOpen("", xpExtCacheIndex, XP_FILE_WRITE);
list_ptr = ext_cache_database_list;
cache_SaveCacheInfo(fp, list_ptr, EXTCACHE);
}
#define BUF_SIZE 2048
PRIVATE void
net_ReadExtCacheInfo(void)
{
XP_File fp;
fp = XP_FileOpen("", xpExtCacheIndex, XP_FILE_READ);
cache_ReadCacheInfo(fp, &ext_cache_database_list, EXTCACHE);
}
PRIVATE void
net_OpenExtCacheFATCallback(MWContext *ctxt, char * filename, void *closure)
{
ExtCacheDBInfo *db_info = (ExtCacheDBInfo*)closure;
if(!db_info || !filename)
return;
StrAllocCopy(db_info->filename, filename);
/* once we have the name try and open the
* cache fat
*/
if(net_OpenExtCacheFat(ctxt, db_info))
{
AtLeastOneOpenCache = TRUE;
}
else
{
if(FE_Confirm(ctxt, "Unable to open External Cache. Try again?"))
{
/* try and open again */
FE_PromptForFileName (ctxt, /* context */
db_info->name, /* prompt string */
db_info->filename, /* default file/path */
TRUE, /* file must exist */
FALSE, /* directories allowed */
net_OpenExtCacheFATCallback, /* callback */
(void *)db_info); /* closure */
return; /* don't save ExtCache info */
}
}
net_SaveExtCacheInfo();
}
PUBLIC void
NET_OpenExtCacheFAT(MWContext *ctxt, char * cache_name, char * instructions)
{
ExtCacheDBInfo *db_info=0, *db_ptr;
XP_Bool done = FALSE;
XP_List *list_ptr;
if(!ext_cache_database_list)
{
net_ReadExtCacheInfo();
if(!ext_cache_database_list)
return;
}
/* look up the name in a list and open the file
* if it's not open already
*/
list_ptr = ext_cache_database_list;
while((db_ptr = (ExtCacheDBInfo *)XP_ListNextObject(list_ptr)) != NULL)
{
if(db_ptr->name && !PL_strcmp(db_ptr->name, cache_name))
{
db_info = db_ptr;
break;
}
}
if(!db_info)
{
db_info = PR_NEW(ExtCacheDBInfo);
if(!db_info)
return;
memset(db_info, 0, sizeof(ExtCacheDBInfo));
StrAllocCopy(db_info->name, cache_name);
XP_ListAddObject(ext_cache_database_list, db_info);
}
else if(db_info->queried_this_session)
{
/* don't query or try and open again.
*/
return;
}
if(db_info->filename)
{
done = net_OpenExtCacheFat(ctxt, db_info);
if(done)
{
char buffer[1024];
PR_snprintf(buffer, sizeof(buffer),
"Now using external cache: %.900s",
db_info->name);
if(!FE_Confirm(ctxt, buffer))
net_CloseExtCacheFat(db_info);
}
}
/* If we don't have the correct filename, query the
* user for the name
*/
if(!done)
{
if(instructions)
done = !FE_Confirm(ctxt, instructions);
else
done = !FE_Confirm(ctxt, XP_GetString( XP_REQUEST_EXTERNAL_CACHE ) );
if(!done)
FE_PromptForFileName (ctxt, /* context */
db_info->name, /* prompt string */
db_info->filename, /* default file/path */
TRUE, /* file must exist */
FALSE, /* directories allowed */
net_OpenExtCacheFATCallback, /* callback */
(void *)db_info); /* closure */
}
db_info->queried_this_session = TRUE;
return;
}
/* lookup routine
*
* builds a key and looks for it in
* the database. Returns an access
* method and sets a filename in the
* URL struct if found
*/
MODULE_PRIVATE int
NET_FindURLInExtCache(URL_Struct * URL_s, MWContext *ctxt)
{
return CACHE_FindURLInCache(URL_s, ctxt);
}
/* ****************************************************************************************************************************
* Exposed Navigator Cache Calls
* ****************************************************************************************************************************/
/*
* allows java to enumerate through all of the managed cache
*/
PUBLIC XP_List *
CACHE_GetManagedCacheList()
{
XP_File fp;
/* If the Cache Index is not open, we can not see if the cache is open now can we */
if (!SARCacheIndexOpen)
{
fp = XP_FileOpen("", xpSARCacheIndex, XP_FILE_READ);
/* check to see if the open succeeds */
if (fp)
{
cache_ReadCacheInfo(fp, &SAR_cache_database_list, SARCACHE);
SARCacheIndexOpen = TRUE;
}
else
return NULL;
}
return SAR_cache_database_list;
}
MODULE_PRIVATE void
CACHE_CloseAllOpenSARCache()
{
ExtCacheDBInfo * db_info;
XP_StatStruct stat_entry;
if (!SARCacheIndexOpen) return;
if (!SAR_cache_database_list) return;
while(NULL != (db_info = (ExtCacheDBInfo *)XP_ListNextObject(SAR_cache_database_list)))
{
CACHE_CloseCache(db_info);
if ( db_info->logFile )
XP_FileClose(db_info->logFile);
/* stat the db file to see if it exists, if it doesn't remove it from */
/* the archive.fat file to keep things consistent */
if(db_info->filename && (XP_Stat(db_info->filename, &stat_entry, xpSARCache) == -1) )
{
/* file does not exist!!
* remove the entry
*/
TRACEMSG(("Error! Cache db file missing: %s", db_info->filename));
if ( NULL != SAR_cache_database_list->prev )
SAR_cache_database_list = SAR_cache_database_list->prev;
XP_ListRemoveObject(SAR_cache_database_list, db_info);
}
cache_freeExtCacheDBInfoObj(db_info);
}
cache_SaveSARCacheInfo();
SAR_cache_database_list = 0;
SARCacheIndexOpen = FALSE;
}
MODULE_PRIVATE void
CACHE_OpenAllSARCache()
{
XP_File fp;
XP_List *tmpList;
ExtCacheDBInfo *db_info,
*tmpDB_info;
char * filename, /* The platform specific filename returned by WH_PlatformFileName */
* tmpName; /* The filename returned by WH_FileName */
if (!SARCacheIndexOpen)
{
fp = XP_FileOpen("", xpSARCacheIndex, XP_FILE_READ);
/* check to see if the open succeeds */
if (fp)
cache_ReadCacheInfo(fp, &SAR_cache_database_list, SARCACHE);
else
return;
}
SARCacheIndexOpen = TRUE;
if (!SAR_cache_database_list) return;
tmpList = SAR_cache_database_list;
while(NULL != (db_info = (ExtCacheDBInfo *)XP_ListNextObject(tmpList)))
{
if ( !db_info->database )
{
tmpName = WH_FileName(db_info->filename, xpSARCache);
filename = WH_FilePlatformName(tmpName);
/* Open or create the db file they specified */
db_info->database = dbopen(filename,
O_RDWR | O_CREAT,
0600,
DB_HASH,
0);
/* check to see if the dbopen failed */
if ( NULL == db_info->database )
{
CACHE_CloseCache(db_info);
PR_FREEIF(db_info);
db_info = NULL;
}
/* Do stuff to get the type, and name */
tmpDB_info = cache_GetSARCacheInfoFromDB(db_info);
if ( !tmpDB_info ) return;
/* Since they can access this one, fill in the cache name value */
db_info->DiskCacheSize = tmpDB_info->DiskCacheSize;
db_info->NumberInDiskCache = tmpDB_info->NumberInDiskCache;
db_info->MaxSize = tmpDB_info->MaxSize;
db_info->name = PL_strdup(tmpDB_info->name);
db_info->logFile = NULL;
cache_freeExtCacheDBInfoObj(tmpDB_info);
#ifdef XP_PC
PR_FREEIF(filename);
#endif
}
}
}
/*
* Closes the cache db
*/
PUBLIC int
CACHE_CloseCache(ExtCacheDBInfo *db)
{
/* If there is no Cache Struct return */
if (!db) return 0;
/* If there is no db return */
if (!db->database) return 0;
if(-1 == (*db->database->close)(db->database))
{
TRACEMSG(("Error closing cache database"));
return 0;
}
db->database = 0;
return SUCCESS;
}
/*
* Closes the cache db
*/
PUBLIC void
CACHE_UpdateCache(ExtCacheDBInfo *db)
{
if ( db )
cache_PutSARCacheInfoIntoDB(db);
}
/*
* Returns a handle to the desired persitent cache,
* It also adds this newly opened cache to the list
* of opened caches
*/
PUBLIC ExtCacheDBInfo *
CACHE_GetCache(ExtCacheDBInfo *db)
{
XP_File fp;
char * filename, /* The platform specific filename returned by WH_PlatformFileName */
* tmpName; /* The filename returned by WH_FileName */
ExtCacheDBInfo *db_info,
*tmpDB_info;
XP_Bool inIndex = FALSE,
add2Index = FALSE;
XP_List *tmpList;
uint32 maxSize;
/* If there is no Cache Struct return */
if (!db) return NULL;
/* **************************************************************************************************
This is a hack. It is a temp fix for bug 69098. The plan is to go with this for 4.0 and
do the right thing in 4.1
************************************************************************************************** */
if ( -1 == db->type ) {
tmpName = WH_FileName(db->filename, xpSARCache);
#ifndef XP_MAC
filename = WH_FilePlatformName(tmpName);
#else
filename = tmpName;
#endif
/* Open or create the db file they specified */
db->database = dbopen(filename,
O_RDWR | O_CREAT,
0600,
DB_HASH,
0);
return db;
}
/* **************************************************************************************************
The above was a hack.
************************************************************************************************** */
/* Set up the max size for the cache */
if (db->MaxSize < 0) {
maxSize = NET_GetDiskCacheSize();
if (maxSize < MIN_MAX_SIZE)
maxSize = MIN_MAX_SIZE;
}
else {
maxSize = db->MaxSize;
}
/* Kludge to prevent NULL writes to the Cache Index */
if ( db->path == NULL || *(db->path) == '\0' || *(db->path) == ' ')
{
db->path = PL_strdup("\\");
}
/* If the Cache Index is not open, we can not see if the cache is open now can we */
if (!SARCacheIndexOpen)
{
fp = XP_FileOpen("", xpSARCacheIndex, XP_FILE_READ);
/* check to see if the open succeeds */
if (fp)
cache_ReadCacheInfo(fp, &SAR_cache_database_list, SARCACHE);
else
{
/* I guess the index isn't there, let's make a new one */
SAR_cache_database_list = XP_ListNew();
if(!SAR_cache_database_list)
return NULL;
/* set the db_info values here since they will not be retrieved later */
db_info = (ExtCacheDBInfo *)PR_Malloc(sizeof(ExtCacheDBInfo));
db_info->name = PL_strdup(db->name);
db_info->filename = PL_strdup(db->filename);
db_info->path = PL_strdup(db->path);
db_info->queried_this_session = FALSE;
db_info->type = db->type;
db_info->database = NULL;
db_info->DiskCacheSize = 0;
db_info->NumberInDiskCache = 0;
db_info->MaxSize = maxSize;
db_info->logFile = NULL;
add2Index = TRUE;
}
SARCacheIndexOpen = TRUE;
}
if (!SAR_cache_database_list) return NULL;
/* If I have to add it, I already know it's not there */
if ( !add2Index )
{
tmpList = SAR_cache_database_list;
while( NULL != (db_info = (ExtCacheDBInfo *)XP_ListNextObject(tmpList)))
{
if(!PL_strcmp(db->filename, db_info->filename) ) /* && !PL_strcmp(db->path, db_info->path) ) */
{
inIndex = TRUE;
break;
}
}
}
if (!inIndex && !add2Index)
{
/* We know nothing about this cache so add it */
db_info = (ExtCacheDBInfo *)PR_Malloc(sizeof(ExtCacheDBInfo));
db_info->name = PL_strdup(db->name);
db_info->filename = PL_strdup(db->filename);
db_info->path = PL_strdup(db->path);
db_info->queried_this_session = FALSE;
db_info->type = db->type;
db_info->database = NULL;
db_info->DiskCacheSize = 0;
db_info->NumberInDiskCache = 0;
db_info->MaxSize = maxSize;
db_info->logFile = NULL;
add2Index = TRUE;
}
else
{
/* if it is already open I am going to return the handle to it,
if it is not open I will return NULL since we have a name conflict */
if ((db_info!= NULL) && (db_info->database))
{
/* Do the meager name check to see if they can access this cache */
if ( PL_strcmp(db->name, db_info->name) )
{
db_info = NULL;
}
return db_info;
}
}
tmpName = WH_FileName(db->filename, xpSARCache);
#ifndef XP_MAC
filename = WH_FilePlatformName(tmpName);
#else
filename = tmpName;
#endif
if (!db_info)
return NULL ;
/* Open or create the db file they specified */
db_info->database = dbopen(filename,
O_RDWR | O_CREAT,
0600,
DB_HASH,
0);
/* check to see if the dbopen failed */
if ( NULL == db_info->database )
{
CACHE_CloseCache(db_info);
PR_FREEIF(db_info);
db_info = NULL;
return NULL;
}
/* Do stuff to get the type, and name */
tmpDB_info = cache_GetSARCacheInfoFromDB(db_info);
/* If tmpDB_info doesn't exist then this is a new cache */
if ( !tmpDB_info )
{
/* Since they can access this one, fill in the cache name value before it is saved */
db_info->name = PL_strdup(db->name);
cache_PutSARCacheInfoIntoDB(db_info);
}
else
{
/* Do the meager name check to see if they can access this cache */
if ( PL_strcmp(db->name, tmpDB_info->name) )
{
CACHE_CloseCache(db_info);
PR_FREEIF(db_info);
db_info = NULL;
}
else
{
/* Since they can access this one, fill in the cache name value */
db_info->name = PL_strdup(db->name);
db_info->DiskCacheSize = tmpDB_info->DiskCacheSize;
db_info->NumberInDiskCache = tmpDB_info->NumberInDiskCache;
db_info->MaxSize = maxSize;
db_info->logFile = NULL;
}
cache_freeExtCacheDBInfoObj(tmpDB_info);
}
if ( add2Index )
{
/* Since this is not in the index, add it */
XP_ListAddObject(SAR_cache_database_list, db_info);
cache_SaveSARCacheInfo();
}
/* This might cause problems for FileName routins
PR_FREEIF(tmpName);
*/
#ifdef XP_PC
PR_FREEIF(filename);
#endif
if (db_info != NULL)
db_info->type = db->type;
/* free the struct they passed in, and have it point to the new
* struct we will be using.
*/
PR_FREEIF(db);
db = db_info;
return db_info;
}
PUBLIC XP_Bool
CACHE_Put(char *filename, URL_Struct *url_s)
{
net_CacheObject *cacheObject = PR_NEW(net_CacheObject);
memset(cacheObject, 0, sizeof(net_CacheObject));
cacheObject->last_modified = url_s->last_modified;
cacheObject->content_length = url_s->content_length;
StrAllocCopy(cacheObject->filename, filename);
cacheObject->is_relative_path = TRUE;
StrAllocCopy(cacheObject->address, url_s->address);
StrAllocCopy(cacheObject->content_type, url_s->content_type);
return NET_CacheStore(cacheObject, url_s, FALSE);
}
PUBLIC char *
CACHE_GetCachePath(char * name)
{
char * tmpName, * filename;
tmpName = WH_FileName(name, xpSARCache);
filename = WH_FilePlatformName(tmpName);
return filename;
}
PUBLIC ExtCacheDBInfo *
CACHE_GetCacheStruct(char * path, char * filename, char * name)
{
ExtCacheDBInfo * db_info;
XP_List *tmpList;
tmpList = SAR_cache_database_list;
while( NULL != (db_info = (ExtCacheDBInfo *)XP_ListNextObject(tmpList)))
{
if(!PL_strcmp(path, db_info->path) && !PL_strcmp(filename, db_info->filename) && !PL_strcmp(name, db_info->name) )
{
return db_info;
}
}
return NULL;
}
/*
* New Cache version to allow for different files, and cache lists
*/
PRIVATE void
cache_SaveCacheInfo(XP_File fp, XP_List *list_ptr, int type)
{
ExtCacheDBInfo *db_info;
int32 len = 0;
if(!list_ptr)
return;
if(!fp)
return;
len = XP_FileWrite("# Netscape External Cache Index" LINEBREAK
"# This is a generated file! Do not edit." LINEBREAK
LINEBREAK,
-1, fp);
if (len < 0)
{
XP_FileClose(fp);
return;
}
/* file format is:
* Filename <TAB> database_name
*/
while((db_info = (ExtCacheDBInfo *)XP_ListNextObject(list_ptr)) != NULL)
{
if( !db_info->filename && ( (type == EXTCACHE && !db_info->name) || (type == SARCACHE && !db_info->path) ) )
continue;
len = XP_FileWrite(db_info->filename, -1, fp);
if (len < 0)
{
XP_FileClose(fp);
return;
}
XP_FileWrite("\t", -1, fp);
if ( type == EXTCACHE )
XP_FileWrite(db_info->name, -1, fp);
else
{
if ( db_info->path == NULL || *(db_info->path) == '\0' || *(db_info->path) == ' ')
{
XP_FileWrite("\\", -1, fp);
}
else
{
XP_FileWrite(db_info->path, -1, fp);
}
}
len = XP_FileWrite(LINEBREAK, -1, fp);
if (len < 0)
{
XP_FileClose(fp);
return;
}
}
XP_FileClose(fp);
}
PRIVATE void
cache_SaveSARCacheInfo(void)
{
XP_File fp;
XP_List *list_ptr;
fp = XP_FileOpen("", xpSARCacheIndex, XP_FILE_WRITE);
list_ptr = SAR_cache_database_list;
cache_SaveCacheInfo(fp, list_ptr, SARCACHE);
}
/*
* New Cache version to allow for different files, and cache lists
*/
PRIVATE void
cache_ReadCacheInfo(XP_File fp, XP_List **list_ptr, int type)
{
ExtCacheDBInfo *new_db_info;
char buf[BUF_SIZE];
char *name;
if(!*list_ptr)
{
*list_ptr = XP_ListNew();
if(!*list_ptr)
return;
}
if(!fp)
return;
/* file format is:
* Filename <TAB> database_name
*/
while(XP_FileReadLine(buf, BUF_SIZE-1, fp))
{
if (*buf == 0 || *buf == '#' || *buf == CR || *buf == LF)
continue;
/* remove /r and /n from the end of the line */
XP_StripLine(buf);
name = PL_strchr(buf, '\t');
if(!name)
continue;
*name++ = '\0';
new_db_info = PR_NEW(ExtCacheDBInfo);
if(!new_db_info)
return;
memset(new_db_info, 0, sizeof(ExtCacheDBInfo));
StrAllocCopy(new_db_info->filename, buf);
if ( type == EXTCACHE )
StrAllocCopy(new_db_info->name, name);
else
StrAllocCopy(new_db_info->path, name);
XP_ListAddObject(*list_ptr, new_db_info);
}
XP_FileClose(fp);
}
/*
* Delete the specified cache and all the files in it.
*/
PUBLIC int CACHE_EmptyCache(ExtCacheDBInfo *db)
{
DBT data;
DBT key;
int ret;
char *filename;
#ifdef DEBUG_francis
printf("CACHE_EmptyCache()\n");
#endif
ret = (*db->database->seq)(db->database, &key, &data, R_FIRST);
if( 0 != ret )
{
#ifdef DEBUG_francis
printf("CACHE_EmptyCache(): 0 != ret\n");
#endif
return 0;
}
do
{
filename = net_GetFilenameInCacheDBT(&data);
if(filename)
{
#ifdef DEBUG_francis
printf("CACHE_EmptyCache(): removing %s\n",filename);
#endif
TRACEMSG(("Removing file: %s due to disk"
" cache remove",filename));
XP_FileRemove(filename, xpSARCache); /* *X* What will happen if I pass this */
PR_Free(filename); /* a relative path */
}
}
while(0 == (*db->database->seq)(db->database, &key, &data, R_NEXT));
db->DiskCacheSize = 0;
db->NumberInDiskCache = 0;
#ifdef DEBUG_francis
printf("CACHE_EmptyCache(): success\n");
#endif
return SUCCESS;
}
/*
* Delete the specified cache and all the files in it.
*/
PUBLIC int CACHE_RemoveCache(ExtCacheDBInfo *db)
{
int ret;
ExtCacheDBInfo *db_info;
XP_List *tmpList;
/* See if the database is open */
if (!db->database) return 0;
CACHE_EmptyCache(db);
CACHE_CloseCache(db);
/* Find the database object in my internal list */
tmpList = SAR_cache_database_list;
while(NULL != (db_info = (ExtCacheDBInfo *)XP_ListNextObject(tmpList)))
{
if(!PL_strcmp(db->path, db_info->path) && !PL_strcmp(db->filename, db_info->filename)) break;
}
/* Remove the cache from SAR_cache_database_list */
if ( XP_ListRemoveObject(SAR_cache_database_list, db_info) )
ret = XP_FileRemove(db->filename, xpSARCache);
/* This was released in the call to CACHE_CloseCache above */
db_info->database = 0;
cache_freeExtCacheDBInfoObj(db_info);
cache_SaveSARCacheInfo();
return ret;
}
MODULE_PRIVATE int
CACHE_FindURLInCache(URL_Struct *URL_s, MWContext *ctxt)
{
DBT *key;
DBT data;
net_CacheObject *found_cache_obj;
ExtCacheDBInfo *db_ptr;
int status;
XP_StatStruct stat_entry;
char *filename=0;
XP_List *list_ptr;
/* larubbio */
XP_FileType fileType;
TRACEMSG(("Checking for URL in external cache"));
/* zero the last modified date so that we don't
* screw up the If-modified-since header by
* having it in even when the document isn't
* cached.
*/
URL_s->last_modified = 0;
if(!AtLeastOneOpenCache && !SARCacheIndexOpen)
{
TRACEMSG(("No External Cache databases open"));
return(0);
}
key = net_GenCacheDBKey(URL_s->address,
URL_s->post_data,
URL_s->post_data_size);
status = 1;
/* Search the external caches first */
if (AtLeastOneOpenCache)
{
list_ptr = ext_cache_database_list;
while((db_ptr = (ExtCacheDBInfo *)XP_ListNextObject(list_ptr)) != NULL)
{
if(db_ptr->database)
{
TRACEMSG(("Searching databse: %s", db_ptr->name));
status = (*db_ptr->database->get)(db_ptr->database, key, &data, 0);
if(status == 0)
{
fileType = xpExtCache;
break;
}
}
}
}
/* Search the SAR caches next */
if (SARCacheIndexOpen && status != 0)
{
list_ptr = SAR_cache_database_list;
while((db_ptr = (ExtCacheDBInfo *)XP_ListNextObject(list_ptr)) != NULL)
{
if(db_ptr->database)
{
TRACEMSG(("Searching databse: %s", db_ptr->name));
status = (*db_ptr->database->get)(db_ptr->database, key, &data, 0);
if(status == 0)
{
time_t cur_time = time(NULL);
/*
* larubbio: If were here, then the file must have
* been found in an external (CD or archive) cache.
* In order to prevent unnecessary network refresh,
* override the network check if the file has
* not already expired out of the cache and the call
* isnt being made from Java (so its not the Netcaster
* crawler).
*/
if( (NULL == URL_s->SARCache) &&
( (0 == URL_s->expires) || (cur_time < URL_s->expires) ))
URL_s->use_local_copy = 1;
fileType = xpSARCache;
URL_s->SARCache = db_ptr;
break;
}
}
}
}
if(status != 0)
{
TRACEMSG(("Key not found in any database"));
net_FreeCacheDBTdata(key);
return(0);
}
found_cache_obj = net_Fast_DBDataToCacheStruct(&data);
TRACEMSG(("mkextcache: found URL in cache!"));
if(!found_cache_obj)
return(0);
/* copy in the cache file name
*/
if(db_ptr->path
#if REAL_TIME /* use this for real */
&& found_cache_obj->is_relative_path
#endif
)
{
if ( PL_strcmp(db_ptr->path, "\\" ) )
StrAllocCopy(filename, db_ptr->path);
StrAllocCat(filename, found_cache_obj->filename);
}
else
{
StrAllocCopy(filename, found_cache_obj->filename);
}
/* make sure the file still exists
* Looks like the new cache is ok since xpExtCache tells XP_Stat to use it's default
* settings, which is what we want so I won't touch it.
*/
if(XP_Stat(filename, &stat_entry, fileType) == -1)
{
/* file does not exist!!
* remove the entry
*/
TRACEMSG(("Error! Cache file missing: %s", filename));
net_FreeCacheDBTdata(key);
PR_Free(filename);
return(0);
}
/*
* if the last accessed date is before the startup date set the
* expiration date really low so that the URL is forced to be rechecked
* again. We don't just not return the URL as being in the
* cache because we want to use "If-modified-since"
*
* This works correctly because mkhttp will zero the
* expires field.
*
* if it's not an http url then just delete the entry
* since we can't do an If-modified-since
*/
/* since we can't set a last accessed time
* we can't do the once per session thing.
* Always assume EVERY TIME
*
* if(found_cache_obj->last_accessed < NET_StartupTime
* && NET_CacheUseMethod != CU_NEVER_CHECK)
*/
if(URL_s->use_local_copy || URL_s->history_num)
{
/* we already did an IMS get or it's coming out
* of the history.
* Set the expires to 0 so that we can now use the
* object
*/
URL_s->expires = 0;
}
else if(NET_CacheUseMethod != CU_NEVER_CHECK)
{
if(!PL_strncasecmp(URL_s->address, "http", 4))
{
#ifdef MOZ_OFFLINE
if ( NET_IsOffline() )
{
time_t cur_time = time(NULL);
if ( (0 == URL_s->expires) || (cur_time < URL_s->expires) )
URL_s->use_local_copy = 1;
}
#endif /* MOZ_OFFLINE */
}
else
{
/* object has expired and cant use IMS. Don't return it */
net_FreeCacheDBTdata(key);
PR_Free(filename);
return(0);
}
}
else
{
/* otherwise use the normal expires date for CU_NEVER_CHECK */
URL_s->expires = found_cache_obj->expires;
}
/* won't need the key anymore */
net_FreeCacheDBTdata(key);
URL_s->cache_file = filename;
/* copy the contents of the URL struct so that the content type
* and other stuff gets recorded
*/
StrAllocCopy(URL_s->content_type, found_cache_obj->content_type);
StrAllocCopy(URL_s->charset, found_cache_obj->charset);
StrAllocCopy(URL_s->content_encoding, found_cache_obj->content_encoding);
URL_s->content_length = found_cache_obj->content_length;
URL_s->real_content_length = found_cache_obj->real_content_length;
URL_s->last_modified = found_cache_obj->last_modified;
URL_s->is_netsite = found_cache_obj->is_netsite;
/* copy security info */
URL_s->security_on = found_cache_obj->security_on;
URL_s->sec_info = SECNAV_CopySSLSocketStatus(found_cache_obj->sec_info);
TIMING_MESSAGE(("cache,%s,on disk", URL_s->address));
TRACEMSG(("Cached copy is valid. returning method"));
TRACEMSG(("Using Disk Copy"));
URL_s->ext_cache_file = TRUE;
return(FILE_CACHE_TYPE_URL);
}
/* free the cache object
*/
MODULE_PRIVATE void cache_freeExtCacheDBInfoObj (ExtCacheDBInfo * cache_obj)
{
PR_FREEIF(cache_obj->database);
PR_FREEIF(cache_obj->filename);
PR_FREEIF(cache_obj->path);
PR_FREEIF(cache_obj->name);
PR_Free(cache_obj);
}
PRIVATE ExtCacheDBInfo *
cache_GetSARCacheInfoFromDB(ExtCacheDBInfo *db_info)
{
DBT key;
DBT data;
if(!db_info->database)
return NULL;
key.data = SAR_CACHE_INFO_STRING;
key.size = PL_strlen(SAR_CACHE_INFO_STRING);
if(0 == (*db_info->database->get)(db_info->database, &key, &data, 0))
{
/* convert it to a struct */
return cache_DBDataToExtCacheDBInfoStruct(&data);
}
return(NULL);
}
/* Flushes the DB's contents to disk */
PUBLIC void
CACHE_FlushCache(ExtCacheDBInfo *db_info)
{
(*db_info->database->sync)(db_info->database, 0);
}
PUBLIC void
CACHE_SaveCacheInfoToDB(ExtCacheDBInfo *db_info)
{
cache_PutSARCacheInfoIntoDB(db_info);
}
PRIVATE int
cache_PutSARCacheInfoIntoDB(ExtCacheDBInfo *db_info)
{
DBT key;
DBT * data;
if(!db_info->database)
return 0;
key.data = SAR_CACHE_INFO_STRING;
key.size = PL_strlen(SAR_CACHE_INFO_STRING);
data = cache_ExtCacheDBInfoStructToDBData(db_info);
if(0 == (*db_info->database->put)(db_info->database, &key, data, 0))
{
/* Flush the db to disk */
(*db_info->database->sync)(db_info->database, 0);
return(SUCCESS);
}
return 0;
}
/* takes a cache object and returns a malloc'd
* (void *) suitible for passing in as a database
* data storage object
*/
MODULE_PRIVATE DBT *
cache_ExtCacheDBInfoStructToDBData(ExtCacheDBInfo * old_obj)
{
int32 len;
char *cur_ptr;
void *new_obj;
int32 total_size;
DBT *rv;
rv = PR_NEW(DBT);
if(!rv)
return(NULL);
total_size = sizeof(ExtCacheDBInfo);
#define ADD_STRING_SIZE(string) \
total_size += old_obj->string ? PL_strlen(old_obj->string)+1 : 0
total_size += sizeof(NULL);
ADD_STRING_SIZE(filename);
ADD_STRING_SIZE(path);
ADD_STRING_SIZE(name);
total_size += sizeof(XP_Bool);
total_size += sizeof(uint32);
total_size += sizeof(uint32);
total_size += sizeof(uint32);
total_size += sizeof(uint32);
#undef ADD_STRING_SIZE
new_obj = PR_Malloc(total_size * sizeof(char));
if(!new_obj)
{
PR_Free(rv);
return NULL;
}
memset(new_obj, 0, total_size * sizeof(char));
/* VERY VERY IMPORTANT. Whenever the
* format of the record structure changes
* you must verify that the byte positions
* in extcache.h are updated
*/
#define STUFF_STRING(string) \
{ \
len = (old_obj->string ? PL_strlen(old_obj->string)+1 : 0); \
COPY_INT32((void *)cur_ptr, &len); \
cur_ptr = cur_ptr + sizeof(int32); \
if(len) \
memcpy((void *)cur_ptr, old_obj->string, len); \
cur_ptr += len; \
}
#define STUFF_NUMBER(number) \
{ \
COPY_INT32((void *)cur_ptr, &old_obj->number); \
cur_ptr = cur_ptr + sizeof(int32); \
}
#define STUFF_BOOL(bool_val) \
{ \
if(old_obj->bool_val) \
((char *)(cur_ptr))[0] = 1; \
else \
((char *)(cur_ptr))[0] = 0; \
cur_ptr = cur_ptr + sizeof(char); \
}
cur_ptr = (char *)new_obj;
/* put the total size of the struct into
* the first field so that we have
* a cross check against corruption
*/
COPY_INT32((void *)cur_ptr, &total_size);
cur_ptr = cur_ptr + sizeof(int32);
STUFF_STRING(filename);
STUFF_STRING(path);
STUFF_STRING(name);
STUFF_BOOL(queried_this_session);
STUFF_NUMBER(type);
STUFF_NUMBER(DiskCacheSize);
STUFF_NUMBER(NumberInDiskCache);
STUFF_NUMBER(MaxSize);
#undef STUFF_STRING
#undef STUFF_NUMBER
#undef STUFF_BOOL
rv->data = new_obj;
rv->size = total_size;
return(rv);
}
/* takes a database storage object and returns a malloc'd
* cache data object. The cache object needs all of
* it's parts free'd.
*
* returns NULL on parse error
*/
MODULE_PRIVATE ExtCacheDBInfo *
cache_DBDataToExtCacheDBInfoStruct(DBT * db_obj)
{
ExtCacheDBInfo * rv = PR_NEW(ExtCacheDBInfo);
char * cur_ptr;
char * max_ptr;
uint32 len;
if(!rv)
return NULL;
memset(rv, 0, sizeof(ExtCacheDBInfo));
/* if any strings are larger than this then
* there was a serious database error
*/
#define MAX_HUGE_STRING_SIZE 10000
#define RETRIEVE_STRING(string) \
{ \
if(cur_ptr > max_ptr) \
{ \
cache_freeExtCacheDBInfoObj(rv); \
return(NULL); \
} \
COPY_INT32(&len, cur_ptr); \
cur_ptr += sizeof(int32); \
if(len) \
{ \
if(len > MAX_HUGE_STRING_SIZE) \
{ \
cache_freeExtCacheDBInfoObj(rv); \
return(NULL); \
} \
rv->string = (char*)PR_Malloc(len); \
if(!rv->string) \
{ \
cache_freeExtCacheDBInfoObj(rv); \
return(NULL); \
} \
memcpy(rv->string, cur_ptr, len); \
cur_ptr += len; \
} \
}
#define RETRIEVE_NUMBER(number) \
{ \
if(cur_ptr > max_ptr) \
return(rv); \
COPY_INT32(&rv->number, cur_ptr); \
cur_ptr += sizeof(int32); \
}
#define RETRIEVE_BOOL(bool) \
{ \
if(cur_ptr > max_ptr) \
return(rv); \
if(((char *)(cur_ptr))[0]) \
rv->bool = TRUE; \
else \
rv->bool = FALSE; \
cur_ptr += sizeof(char); \
}
cur_ptr = (char *)db_obj->data;
max_ptr = cur_ptr+db_obj->size;
/* get the total size of the struct out of
* the first field to check it
*/
COPY_INT32(&len, cur_ptr);
cur_ptr += sizeof(int32);
if(len != db_obj->size)
{
TRACEMSG(("Size going in is not the same as size coming out"));
PR_Free(rv);
return(NULL);
}
RETRIEVE_STRING(filename);
RETRIEVE_STRING(path);
RETRIEVE_STRING(name);
RETRIEVE_BOOL(queried_this_session);
RETRIEVE_NUMBER(type);
RETRIEVE_NUMBER(DiskCacheSize);
RETRIEVE_NUMBER(NumberInDiskCache);
RETRIEVE_NUMBER(MaxSize);
return(rv);
}
#endif /* MOZILLA_CLIENT */
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