// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: cachedb.cc,v 1.6 2003/02/10 07:34:41 doogie Exp $
+// $Id: cachedb.cc,v 1.7 2004/05/08 19:41:01 mdz Exp $
/* ######################################################################
CacheDB
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "cachedb.h"
-#endif
-
#include "cachedb.h"
#include <apti18n.h>
#include <apt-pkg/error.h>
#include <apt-pkg/md5.h>
+#include <apt-pkg/sha1.h>
+#include <apt-pkg/sha256.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/configuration.h>
// CacheDB::ReadyDB - Ready the DB2 /*{{{*/
// ---------------------------------------------------------------------
/* This opens the DB2 file for caching package information */
-bool CacheDB::ReadyDB(string DB)
+bool CacheDB::ReadyDB(string const &DB)
{
+ int err;
+
ReadOnly = _config->FindB("APT::FTPArchive::ReadOnlyDB",false);
// Close the old DB
if (DB.empty())
return true;
-
- if ((errno = db_open(DB.c_str(),DB_HASH,
+
+ db_create(&Dbp, NULL, 0);
+ if ((err = Dbp->open(Dbp, NULL, DB.c_str(), NULL, DB_BTREE,
(ReadOnly?DB_RDONLY:DB_CREATE),
- 0644,0,0,&Dbp)) != 0)
+ 0644)) != 0)
{
- Dbp = 0;
- return _error->Errno("db_open",_("Unable to open DB2 file %s"),DB.c_str());
+ if (err == DB_OLD_VERSION)
+ {
+ _error->Warning(_("DB is old, attempting to upgrade %s"),DBFile.c_str());
+ err = Dbp->upgrade(Dbp, DB.c_str(), 0);
+ if (!err)
+ err = Dbp->open(Dbp, NULL, DB.c_str(), NULL, DB_HASH,
+ (ReadOnly?DB_RDONLY:DB_CREATE), 0644);
+
+ }
+ // the database format has changed from DB_HASH to DB_BTREE in
+ // apt 0.6.44
+ if (err == EINVAL)
+ {
+ _error->Error(_("DB format is invalid. If you upgraded from an older version of apt, please remove and re-create the database."));
+ }
+ if (err)
+ {
+ Dbp = 0;
+ return _error->Error(_("Unable to open DB file %s: %s"),DB.c_str(), db_strerror(err));
+ }
}
DBFile = DB;
return true;
}
/*}}}*/
-// CacheDB::SetFile - Select a file to be working with /*{{{*/
+// CacheDB::OpenFile - Open the file /*{{{*/
// ---------------------------------------------------------------------
-/* All future actions will be performed against this file */
-bool CacheDB::SetFile(string FileName,struct stat St,FileFd *Fd)
+/* */
+bool CacheDB::OpenFile()
+{
+ Fd = new FileFd(FileName,FileFd::ReadOnly);
+ if (_error->PendingError() == true)
+ {
+ delete Fd;
+ Fd = NULL;
+ return false;
+ }
+ return true;
+}
+ /*}}}*/
+// CacheDB::GetFileStat - Get stats from the file /*{{{*/
+// ---------------------------------------------------------------------
+/* This gets the size from the database if it's there. If we need
+ * to look at the file, also get the mtime from the file. */
+bool CacheDB::GetFileStat(bool const &doStat)
+{
+ if ((CurStat.Flags & FlSize) == FlSize && doStat == false)
+ {
+ /* Already worked out the file size */
+ }
+ else
+ {
+ /* Get it from the file. */
+ if (Fd == NULL && OpenFile() == false)
+ {
+ return false;
+ }
+ // Stat the file
+ struct stat St;
+ if (fstat(Fd->Fd(),&St) != 0)
+ {
+ return _error->Errno("fstat",
+ _("Failed to stat %s"),FileName.c_str());
+ }
+ CurStat.FileSize = St.st_size;
+ CurStat.mtime = htonl(St.st_mtime);
+ CurStat.Flags |= FlSize;
+ }
+ return true;
+}
+ /*}}}*/
+// CacheDB::GetCurStat - Set the CurStat variable. /*{{{*/
+// ---------------------------------------------------------------------
+/* Sets the CurStat variable. Either to 0 if no database is used
+ * or to the value in the database if one is used */
+bool CacheDB::GetCurStat()
{
- delete DebFile;
- DebFile = 0;
- this->FileName = FileName;
- this->Fd = Fd;
- this->FileStat = St;
- FileStat = St;
memset(&CurStat,0,sizeof(CurStat));
- Stats.Bytes += St.st_size;
- Stats.Packages++;
-
- if (DBLoaded == false)
- return true;
+ if (DBLoaded)
+ {
+ /* First see if there is anything about it
+ in the database */
+ /* Get the flags (and mtime) */
InitQuery("st");
-
// Ensure alignment of the returned structure
Data.data = &CurStat;
Data.ulen = sizeof(CurStat);
Data.flags = DB_DBT_USERMEM;
- // Lookup the stat info and confirm the file is unchanged
- if (Get() == true)
- {
- if (CurStat.mtime != htonl(St.st_mtime))
+ if (Get() == false)
{
- CurStat.mtime = htonl(St.st_mtime);
CurStat.Flags = 0;
- _error->Warning(_("File date has changed %s"),FileName.c_str());
}
+ CurStat.Flags = ntohl(CurStat.Flags);
+ CurStat.FileSize = ntohl(CurStat.FileSize);
}
- else
+ return true;
+}
+ /*}}}*/
+// CacheDB::GetFileInfo - Get all the info about the file /*{{{*/
+// ---------------------------------------------------------------------
+bool CacheDB::GetFileInfo(string const &FileName, bool const &DoControl, bool const &DoContents,
+ bool const &GenContentsOnly, bool const &DoMD5, bool const &DoSHA1,
+ bool const &DoSHA256, bool const &checkMtime)
+{
+ this->FileName = FileName;
+
+ if (GetCurStat() == false)
{
- CurStat.mtime = htonl(St.st_mtime);
- CurStat.Flags = 0;
+ return false;
}
- CurStat.Flags = ntohl(CurStat.Flags);
OldStat = CurStat;
+
+ if (GetFileStat(checkMtime) == false)
+ {
+ delete Fd;
+ Fd = NULL;
+ return false;
+ }
+
+ /* if mtime changed, update CurStat from disk */
+ if (checkMtime == true && OldStat.mtime != CurStat.mtime)
+ CurStat.Flags = FlSize;
+
+ Stats.Bytes += CurStat.FileSize;
+ Stats.Packages++;
+
+ if ((DoControl && LoadControl() == false)
+ || (DoContents && LoadContents(GenContentsOnly) == false)
+ || (DoMD5 && GetMD5(false) == false)
+ || (DoSHA1 && GetSHA1(false) == false)
+ || (DoSHA256 && GetSHA256(false) == false))
+ {
+ delete Fd;
+ Fd = NULL;
+ delete DebFile;
+ DebFile = NULL;
+ return false;
+ }
+
+ delete Fd;
+ Fd = NULL;
+ delete DebFile;
+ DebFile = NULL;
+
return true;
}
/*}}}*/
CurStat.Flags &= ~FlControl;
}
+ if (Fd == NULL && OpenFile() == false)
+ {
+ return false;
+ }
// Create a deb instance to read the archive
if (DebFile == 0)
{
// CacheDB::LoadContents - Load the File Listing /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool CacheDB::LoadContents(bool GenOnly)
+bool CacheDB::LoadContents(bool const &GenOnly)
{
// Try to read the control information out of the DB.
if ((CurStat.Flags & FlContents) == FlContents)
CurStat.Flags &= ~FlContents;
}
+ if (Fd == NULL && OpenFile() == false)
+ {
+ return false;
+ }
// Create a deb instance to read the archive
if (DebFile == 0)
{
return true;
}
/*}}}*/
+
+static string bytes2hex(uint8_t *bytes, size_t length) {
+ char space[65];
+ if (length * 2 > sizeof(space) - 1) length = (sizeof(space) - 1) / 2;
+ for (size_t i = 0; i < length; i++)
+ snprintf(&space[i*2], 3, "%02x", bytes[i]);
+ return string(space);
+}
+
+static inline unsigned char xdig2num(char const &dig) {
+ if (isdigit(dig)) return dig - '0';
+ if ('a' <= dig && dig <= 'f') return dig - 'a' + 10;
+ if ('A' <= dig && dig <= 'F') return dig - 'A' + 10;
+ return 0;
+}
+
+static void hex2bytes(uint8_t *bytes, const char *hex, int length) {
+ while (length-- > 0) {
+ *bytes = 0;
+ if (isxdigit(hex[0]) && isxdigit(hex[1])) {
+ *bytes = xdig2num(hex[0]) * 16 + xdig2num(hex[1]);
+ hex += 2;
+ }
+ bytes++;
+ }
+}
+
// CacheDB::GetMD5 - Get the MD5 hash /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool CacheDB::GetMD5(string &MD5Res,bool GenOnly)
+bool CacheDB::GetMD5(bool const &GenOnly)
{
// Try to read the control information out of the DB.
if ((CurStat.Flags & FlMD5) == FlMD5)
if (GenOnly == true)
return true;
- InitQuery("m5");
- if (Get() == true)
- {
- MD5Res = string((char *)Data.data,Data.size);
+ MD5Res = bytes2hex(CurStat.MD5, sizeof(CurStat.MD5));
return true;
}
- CurStat.Flags &= ~FlMD5;
- }
- Stats.MD5Bytes += FileStat.st_size;
+ Stats.MD5Bytes += CurStat.FileSize;
+ if (Fd == NULL && OpenFile() == false)
+ {
+ return false;
+ }
MD5Summation MD5;
- if (Fd->Seek(0) == false || MD5.AddFD(Fd->Fd(),FileStat.st_size) == false)
+ if (Fd->Seek(0) == false || MD5.AddFD(Fd->Fd(),CurStat.FileSize) == false)
return false;
MD5Res = MD5.Result();
- InitQuery("m5");
- if (Put(MD5Res.c_str(),MD5Res.length()) == true)
+ hex2bytes(CurStat.MD5, MD5Res.data(), sizeof(CurStat.MD5));
CurStat.Flags |= FlMD5;
return true;
}
/*}}}*/
+// CacheDB::GetSHA1 - Get the SHA1 hash /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool CacheDB::GetSHA1(bool const &GenOnly)
+{
+ // Try to read the control information out of the DB.
+ if ((CurStat.Flags & FlSHA1) == FlSHA1)
+ {
+ if (GenOnly == true)
+ return true;
+
+ SHA1Res = bytes2hex(CurStat.SHA1, sizeof(CurStat.SHA1));
+ return true;
+ }
+
+ Stats.SHA1Bytes += CurStat.FileSize;
+
+ if (Fd == NULL && OpenFile() == false)
+ {
+ return false;
+ }
+ SHA1Summation SHA1;
+ if (Fd->Seek(0) == false || SHA1.AddFD(Fd->Fd(),CurStat.FileSize) == false)
+ return false;
+
+ SHA1Res = SHA1.Result();
+ hex2bytes(CurStat.SHA1, SHA1Res.data(), sizeof(CurStat.SHA1));
+ CurStat.Flags |= FlSHA1;
+ return true;
+}
+ /*}}}*/
+// CacheDB::GetSHA256 - Get the SHA256 hash /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool CacheDB::GetSHA256(bool const &GenOnly)
+{
+ // Try to read the control information out of the DB.
+ if ((CurStat.Flags & FlSHA256) == FlSHA256)
+ {
+ if (GenOnly == true)
+ return true;
+
+ SHA256Res = bytes2hex(CurStat.SHA256, sizeof(CurStat.SHA256));
+ return true;
+ }
+
+ Stats.SHA256Bytes += CurStat.FileSize;
+
+ if (Fd == NULL && OpenFile() == false)
+ {
+ return false;
+ }
+ SHA256Summation SHA256;
+ if (Fd->Seek(0) == false || SHA256.AddFD(Fd->Fd(),CurStat.FileSize) == false)
+ return false;
+
+ SHA256Res = SHA256.Result();
+ hex2bytes(CurStat.SHA256, SHA256Res.data(), sizeof(CurStat.SHA256));
+ CurStat.Flags |= FlSHA256;
+ return true;
+}
+ /*}}}*/
// CacheDB::Finish - Write back the cache structure /*{{{*/
// ---------------------------------------------------------------------
/* */
// Write the stat information
CurStat.Flags = htonl(CurStat.Flags);
+ CurStat.FileSize = htonl(CurStat.FileSize);
InitQuery("st");
Put(&CurStat,sizeof(CurStat));
CurStat.Flags = ntohl(CurStat.Flags);
+ CurStat.FileSize = ntohl(CurStat.FileSize);
+
return true;
}
/*}}}*/
/* I'm not sure what VERSION_MINOR should be here.. 2.4.14 certainly
needs the lower one and 2.7.7 needs the upper.. */
-#if DB_VERSION_MAJOR >= 2 && DB_VERSION_MINOR >= 7
- DBC *Cursor;
- if ((errno = Dbp->cursor(Dbp,0,&Cursor,0)) != 0)
- return _error->Error(_("Unable to get a cursor"));
-#else
DBC *Cursor;
- if ((errno = Dbp->cursor(Dbp,0,&Cursor)) != 0)
+ if ((errno = Dbp->cursor(Dbp, NULL, &Cursor, 0)) != 0)
return _error->Error(_("Unable to get a cursor"));
-#endif
DBT Key;
DBT Data;
memset(&Data,0,sizeof(Data));
while ((errno = Cursor->c_get(Cursor,&Key,&Data,DB_NEXT)) == 0)
{
- const char *Colon = (char *)Key.data;
- for (; Colon != (char *)Key.data+Key.size && *Colon != ':'; Colon++);
- if ((char *)Key.data+Key.size - Colon > 2)
+ const char *Colon = (char*)memrchr(Key.data, ':', Key.size);
+ if (Colon)
{
- if (stringcmp((char *)Key.data,Colon,"st") == 0 ||
- stringcmp((char *)Key.data,Colon,"cn") == 0 ||
- stringcmp((char *)Key.data,Colon,"m5") == 0 ||
- stringcmp((char *)Key.data,Colon,"cl") == 0)
+ if (stringcmp(Colon + 1, (char *)Key.data+Key.size,"st") == 0 ||
+ stringcmp(Colon + 1, (char *)Key.data+Key.size,"cl") == 0 ||
+ stringcmp(Colon + 1, (char *)Key.data+Key.size,"cn") == 0)
{
- if (FileExists(string(Colon+1,(const char *)Key.data+Key.size)) == true)
+ if (FileExists(string((const char *)Key.data,Colon)) == true)
continue;
}
}
Cursor->c_del(Cursor,0);
}
+ Dbp->compact(Dbp, NULL, NULL, NULL, NULL, DB_FREE_SPACE, NULL);
return true;
}
projects / apt.git / blobdiff