// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: cachedb.cc,v 1.3 2001/05/29 03:50:33 jgg 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 <config.h>
#include <apt-pkg/error.h>
#include <apt-pkg/md5.h>
+#include <apt-pkg/sha1.h>
+#include <apt-pkg/sha2.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/configuration.h>
-
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/debfile.h>
+#include <apt-pkg/gpgv.h>
+#include <apt-pkg/hashes.h>
+
#include <netinet/in.h> // htonl, etc
+#include <ctype.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <strings.h>
+
+#include "cachedb.h"
+
+#include <apti18n.h>
/*}}}*/
+CacheDB::CacheDB(std::string const &DB)
+ : Dbp(0), Fd(NULL), DebFile(0)
+{
+ TmpKey[0]='\0';
+ ReadyDB(DB);
+}
+
+CacheDB::~CacheDB()
+{
+ ReadyDB();
+ delete DebFile;
+ CloseFile();
+}
+
// CacheDB::ReadyDB - Ready the DB2 /*{{{*/
// ---------------------------------------------------------------------
/* This opens the DB2 file for caching package information */
-bool CacheDB::ReadyDB(string DB)
+bool CacheDB::ReadyDB(std::string const &DB)
{
+ int err;
+
ReadOnly = _config->FindB("APT::FTPArchive::ReadOnlyDB",false);
// Close the old DB
corrupted DB */
if (DBFailed() == true)
{
- _error->Warning("DB was corrupted, file renamed to %s.old",DBFile.c_str());
+ _error->Warning(_("DB was corrupted, file renamed to %s.old"),DBFile.c_str());
rename(DBFile.c_str(),(DBFile+".old").c_str());
}
DBLoaded = false;
Dbp = 0;
- DBFile = string();
+ DBFile = std::string();
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;
DBLoaded = true;
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()
{
- 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)
+ // always close existing file first
+ CloseFile();
+
+ // open a new file
+ Fd = new FileFd(FileName,FileFd::ReadOnly);
+ if (_error->PendingError() == true)
+ {
+ CloseFile();
+ return false;
+ }
+ return true;
+}
+ /*}}}*/
+// CacheDB::CloseFile - Close the file /*{{{*/
+void CacheDB::CloseFile()
+{
+ if(Fd != NULL)
+ {
+ delete Fd;
+ Fd = NULL;
+ }
+}
+ /*}}}*/
+// CacheDB::OpenDebFile - Open a debfile /*{{{*/
+bool CacheDB::OpenDebFile()
+{
+ // always close existing file first
+ CloseDebFile();
+
+ // first open the fd, then pass it to the debDebFile
+ if(OpenFile() == false)
+ return false;
+ DebFile = new debDebFile(*Fd);
+ if (_error->PendingError() == true)
+ return false;
+ return true;
+}
+ /*}}}*/
+// CacheDB::CloseDebFile - Close a debfile again /*{{{*/
+void CacheDB::CloseDebFile()
+{
+ CloseFile();
+
+ if(DebFile != NULL)
+ {
+ delete DebFile;
+ DebFile = NULL;
+ }
+}
+ /*}}}*/
+// 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)
return true;
- InitQuery("st");
+ /* Get it from the file. */
+ if (OpenFile() == false)
+ return false;
- // Ensure alignment of the returned structure
+ // Stat the file
+ struct stat St;
+ if (fstat(Fd->Fd(),&St) != 0)
+ {
+ CloseFile();
+ 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::GetCurStatCompatOldFormat /*{{{*/
+// ---------------------------------------------------------------------
+/* Read the old (32bit FileSize) StateStore format from disk */
+bool CacheDB::GetCurStatCompatOldFormat()
+{
+ InitQueryStats();
+ Data.data = &CurStatOldFormat;
+ Data.flags = DB_DBT_USERMEM;
+ Data.ulen = sizeof(CurStatOldFormat);
+ if (Get() == false)
+ {
+ CurStat.Flags = 0;
+ } else {
+ CurStat.Flags = CurStatOldFormat.Flags;
+ CurStat.mtime = CurStatOldFormat.mtime;
+ CurStat.FileSize = CurStatOldFormat.FileSize;
+ memcpy(CurStat.MD5, CurStatOldFormat.MD5, sizeof(CurStat.MD5));
+ memcpy(CurStat.SHA1, CurStatOldFormat.SHA1, sizeof(CurStat.SHA1));
+ memcpy(CurStat.SHA256, CurStatOldFormat.SHA256, sizeof(CurStat.SHA256));
+ }
+ return true;
+}
+ /*}}}*/
+// CacheDB::GetCurStatCompatOldFormat /*{{{*/
+// ---------------------------------------------------------------------
+/* Read the new (64bit FileSize) StateStore format from disk */
+bool CacheDB::GetCurStatCompatNewFormat()
+{
+ InitQueryStats();
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)
+ Data.ulen = sizeof(CurStat);
+ if (Get() == false)
+ {
+ CurStat.Flags = 0;
+ }
+ 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()
+{
+ memset(&CurStat,0,sizeof(CurStat));
+
+ if (DBLoaded)
{
- if (CurStat.st_mtime != htonl(St.st_mtime))
+ // do a first query to just get the size of the data on disk
+ InitQueryStats();
+ Data.data = &CurStat;
+ Data.flags = DB_DBT_USERMEM;
+ Data.ulen = 0;
+ Get();
+
+ if (Data.size == 0)
+ {
+ // nothing needs to be done, we just have not data for this deb
+ }
+ // check if the record is written in the old format (32bit filesize)
+ else if(Data.size == sizeof(CurStatOldFormat))
{
- CurStat.st_mtime = htonl(St.st_mtime);
- CurStat.Flags = 0;
- _error->Warning("File date has changed %s",FileName.c_str());
- }
+ GetCurStatCompatOldFormat();
+ }
+ else if(Data.size == sizeof(CurStat))
+ {
+ GetCurStatCompatNewFormat();
+ } else {
+ return _error->Error("Cache record size mismatch (%ul)", Data.size);
+ }
+
+ CurStat.Flags = ntohl(CurStat.Flags);
+ CurStat.FileSize = ntohl(CurStat.FileSize);
}
- else
- {
- CurStat.st_mtime = htonl(St.st_mtime);
- CurStat.Flags = 0;
- }
- CurStat.Flags = ntohl(CurStat.Flags);
+ return true;
+}
+ /*}}}*/
+// CacheDB::GetFileInfo - Get all the info about the file /*{{{*/
+// ---------------------------------------------------------------------
+bool CacheDB::GetFileInfo(std::string const &FileName, bool const &DoControl, bool const &DoContents,
+ bool const &GenContentsOnly, bool const DoSource, unsigned int const DoHashes,
+ bool const &checkMtime)
+{
+ this->FileName = FileName;
+
+ if (GetCurStat() == false)
+ return false;
OldStat = CurStat;
+
+ if (GetFileStat(checkMtime) == false)
+ 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)
+ || (DoSource && LoadSource() == false)
+ || (DoHashes != 0 && GetHashes(false, DoHashes) == false)
+ )
+ {
+ return false;
+ }
+
+ return true;
+}
+ /*}}}*/
+bool CacheDB::LoadSource() /*{{{*/
+{
+ // Try to read the control information out of the DB.
+ if ((CurStat.Flags & FlSource) == FlSource)
+ {
+ // Lookup the control information
+ InitQuerySource();
+ if (Get() == true && Dsc.TakeDsc(Data.data, Data.size) == true)
+ {
+ return true;
+ }
+ CurStat.Flags &= ~FlSource;
+ }
+ if (OpenFile() == false)
+ return false;
+
+ Stats.Misses++;
+ if (Dsc.Read(FileName) == false)
+ return false;
+
+ if (Dsc.Length == 0)
+ return _error->Error(_("Failed to read .dsc"));
+
+ // Write back the control information
+ InitQuerySource();
+ if (Put(Dsc.Data.c_str(), Dsc.Length) == true)
+ CurStat.Flags |= FlSource;
+
return true;
}
/*}}}*/
if ((CurStat.Flags & FlControl) == FlControl)
{
// Lookup the control information
- InitQuery("cl");
+ InitQueryControl();
if (Get() == true && Control.TakeControl(Data.data,Data.size) == true)
return true;
CurStat.Flags &= ~FlControl;
}
- // Create a deb instance to read the archive
- if (DebFile == 0)
- {
- DebFile = new debDebFile(*Fd);
- if (_error->PendingError() == true)
- return false;
- }
+ if(OpenDebFile() == false)
+ return false;
Stats.Misses++;
if (Control.Read(*DebFile) == false)
return false;
if (Control.Control == 0)
- return _error->Error("Archive has no control record");
+ return _error->Error(_("Archive has no control record"));
// Write back the control information
- InitQuery("cl");
+ InitQueryControl();
if (Put(Control.Control,Control.Length) == true)
CurStat.Flags |= FlControl;
return true;
// 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)
return true;
// Lookup the contents information
- InitQuery("cn");
+ InitQueryContent();
if (Get() == true)
{
if (Contents.TakeContents(Data.data,Data.size) == true)
CurStat.Flags &= ~FlContents;
}
- // Create a deb instance to read the archive
- if (DebFile == 0)
- {
- DebFile = new debDebFile(*Fd);
- if (_error->PendingError() == true)
- return false;
- }
+ if(OpenDebFile() == false)
+ return false;
+ Stats.Misses++;
if (Contents.Read(*DebFile) == false)
return false;
// Write back the control information
- InitQuery("cn");
+ InitQueryContent();
if (Put(Contents.Data,Contents.CurSize) == true)
CurStat.Flags |= FlContents;
return true;
}
/*}}}*/
-// CacheDB::GetMD5 - Get the MD5 hash /*{{{*/
-// ---------------------------------------------------------------------
-/* */
-bool CacheDB::GetMD5(string &MD5Res,bool GenOnly)
+// CacheDB::GetHashes - Get the hashs /*{{{*/
+static std::string bytes2hex(uint8_t *bytes, size_t length) {
+ char buf[3];
+ std::string space;
+
+ space.reserve(length*2 + 1);
+ for (size_t i = 0; i < length; i++) {
+ snprintf(buf, sizeof(buf), "%02x", bytes[i]);
+ space.append(buf);
+ }
+ return 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++;
+ }
+}
+bool CacheDB::GetHashes(bool const GenOnly, unsigned int const DoHashes)
{
- // Try to read the control information out of the DB.
- if ((CurStat.Flags & FlMD5) == FlMD5)
+ unsigned int notCachedHashes = 0;
+ if ((CurStat.Flags & FlMD5) != FlMD5)
{
- if (GenOnly == true)
- return true;
-
- InitQuery("m5");
- if (Get() == true)
+ notCachedHashes = notCachedHashes | Hashes::MD5SUM;
+ }
+ if ((CurStat.Flags & FlSHA1) != FlSHA1)
+ {
+ notCachedHashes = notCachedHashes | Hashes::SHA1SUM;
+ }
+ if ((CurStat.Flags & FlSHA256) != FlSHA256)
+ {
+ notCachedHashes = notCachedHashes | Hashes::SHA256SUM;
+ }
+ if ((CurStat.Flags & FlSHA512) != FlSHA512)
+ {
+ notCachedHashes = notCachedHashes | Hashes::SHA512SUM;
+ }
+ unsigned int FlHashes = DoHashes & notCachedHashes;
+ HashesList.clear();
+
+ if (FlHashes != 0)
+ {
+ if (OpenFile() == false)
+ return false;
+
+ Hashes hashes(FlHashes);
+ if (Fd->Seek(0) == false || hashes.AddFD(*Fd, CurStat.FileSize) == false)
+ return false;
+
+ HashStringList hl = hashes.GetHashStringList();
+ for (HashStringList::const_iterator hs = hl.begin(); hs != hl.end(); ++hs)
{
- MD5Res = string((char *)Data.data,Data.size);
- return true;
+ HashesList.push_back(*hs);
+ if (strcasecmp(hs->HashType().c_str(), "SHA512") == 0)
+ {
+ Stats.SHA512Bytes += CurStat.FileSize;
+ hex2bytes(CurStat.SHA512, hs->HashValue().data(), sizeof(CurStat.SHA512));
+ CurStat.Flags |= FlSHA512;
+ }
+ else if (strcasecmp(hs->HashType().c_str(), "SHA256") == 0)
+ {
+ Stats.SHA256Bytes += CurStat.FileSize;
+ hex2bytes(CurStat.SHA256, hs->HashValue().data(), sizeof(CurStat.SHA256));
+ CurStat.Flags |= FlSHA256;
+ }
+ else if (strcasecmp(hs->HashType().c_str(), "SHA1") == 0)
+ {
+ Stats.SHA1Bytes += CurStat.FileSize;
+ hex2bytes(CurStat.SHA1, hs->HashValue().data(), sizeof(CurStat.SHA1));
+ CurStat.Flags |= FlSHA1;
+ }
+ else if (strcasecmp(hs->HashType().c_str(), "MD5Sum") == 0)
+ {
+ Stats.MD5Bytes += CurStat.FileSize;
+ hex2bytes(CurStat.MD5, hs->HashValue().data(), sizeof(CurStat.MD5));
+ CurStat.Flags |= FlMD5;
+ }
+ else if (strcasecmp(hs->HashType().c_str(), "Checksum-FileSize") == 0)
+ {
+ // we store it in a different field already
+ }
+ else
+ return _error->Error("Got unknown unrequested hashtype %s", hs->HashType().c_str());
}
- CurStat.Flags &= ~FlMD5;
}
-
- Stats.MD5Bytes += FileStat.st_size;
-
- MD5Summation MD5;
- if (Fd->Seek(0) == false || MD5.AddFD(Fd->Fd(),FileStat.st_size) == false)
- return false;
-
- MD5Res = MD5.Result();
- InitQuery("m5");
- if (Put(MD5Res.c_str(),MD5Res.length()) == true)
- CurStat.Flags |= FlMD5;
- return true;
+ if (GenOnly == true)
+ return true;
+
+ bool ret = true;
+#define PUSH_BACK_HASH(FLAG, TYPE, VALUE) \
+ if ((CurStat.Flags & FLAG) == FLAG) \
+ ret &= HashesList.push_back(HashString(TYPE, bytes2hex(VALUE, sizeof(VALUE))));
+ PUSH_BACK_HASH(FlMD5, "MD5Sum", CurStat.MD5);
+ PUSH_BACK_HASH(FlSHA1, "SHA1", CurStat.SHA1);
+ PUSH_BACK_HASH(FlSHA256, "SHA256", CurStat.SHA256);
+ PUSH_BACK_HASH(FlSHA512, "SHA512", CurStat.SHA512);
+ return ret;
}
/*}}}*/
// CacheDB::Finish - Write back the cache structure /*{{{*/
{
// Optimize away some writes.
if (CurStat.Flags == OldStat.Flags &&
- CurStat.st_mtime == OldStat.st_mtime)
+ CurStat.mtime == OldStat.mtime)
return true;
-
+
// Write the stat information
CurStat.Flags = htonl(CurStat.Flags);
- InitQuery("st");
+ CurStat.FileSize = htonl(CurStat.FileSize);
+ InitQueryStats();
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)
- return _error->Error("Unable to get a cursor");
-#endif
+ if ((errno = Dbp->cursor(Dbp, NULL, &Cursor, 0)) != 0)
+ return _error->Error(_("Unable to get a cursor"));
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,"cs") == 0 ||
+ stringcmp(Colon + 1, (char *)Key.data+Key.size,"cn") == 0)
{
- if (FileExists(string(Colon+1,(const char *)Key.data+Key.size)) == true)
- continue;
+ std::string FileName = std::string((const char *)Key.data,Colon);
+ if (FileExists(FileName) == true) {
+ continue;
+ }
}
}
-
Cursor->c_del(Cursor,0);
}
+ int res = Dbp->compact(Dbp, NULL, NULL, NULL, NULL, DB_FREE_SPACE, NULL);
+ if (res < 0)
+ _error->Warning("compact failed with result %i", res);
+
+ if(_config->FindB("Debug::APT::FTPArchive::Clean", false) == true)
+ Dbp->stat_print(Dbp, 0);
+
return true;
}
projects / apt.git / blobdiff