New upstream version 3.3.3+dfsg1.upstream/3.3.3+dfsg1

1 files changed, 0 insertions, 534 deletions

diff --git a/Plugins/DbSqliteWx/codecext.c b/Plugins/DbSqliteWx/codecext.c
deleted file mode 100644
index 5af92a2..0000000
--- a/Plugins/DbSqliteWx/codecext.c
+++ /dev/null
@@ -1,534 +0,0 @@
-/*
-** Name:        codecext.c
-** Purpose:     Implementation of SQLite codec API
-** Author:      Ulrich Telle
-** Created:     2006-12-06
-** Copyright:   (c) 2006-2018 Ulrich Telle
-** License:     LGPL-3.0+ WITH WxWindows-exception-3.1
-*/
-
-#ifndef SQLITE_OMIT_DISKIO
-#ifdef SQLITE_HAS_CODEC
-
-/*
-** Include a "special" version of the VACUUM command
-*/
-#include "rekeyvacuum.c"
-
-#include "codec.h"
-
-void wx_sqlite3_activate_see(const char *info)
-{
-}
-
-/*
-// Free the encryption data structure associated with a pager instance.
-// (called from the modified code in pager.c) 
-*/
-void wx_sqlite3CodecFree(void *pCodecArg)
-{
-  if (pCodecArg)
-  {
-    CodecTerm(pCodecArg);
-    wx_sqlite3_free(pCodecArg);
-    pCodecArg = NULL;
-  }
-}
-
-void wx_sqlite3CodecSizeChange(void *pArg, int pageSize, int reservedSize)
-{
-  Codec* pCodec = (Codec*) pArg;
-  pCodec->m_pageSize = pageSize;
-  pCodec->m_reserved = reservedSize;
-}
-
-static void reportCodecError(Btree* pBt, int error)
-{
-  pBt->pBt->pPager->errCode = error;
-  setGetterMethod(pBt->pBt->pPager);
-  pBt->pBt->db->errCode = error;
-}
-
-/*
-// Encrypt/Decrypt functionality, called by pager.c
-*/
-void* wx_sqlite3Codec(void* pCodecArg, void* data, Pgno nPageNum, int nMode)
-{
-  int rc = SQLITE_OK;
-  Codec* codec = NULL;
-  int pageSize;
-  if (pCodecArg == NULL)
-  {
-    return data;
-  }
-  codec = (Codec*) pCodecArg;
-  if (!CodecIsEncrypted(codec))
-  {
-    return data;
-  }
-  
-  pageSize = wx_sqlite3BtreeGetPageSize(CodecGetBtree(codec));
-
-  switch(nMode)
-  {
-    case 0: /* Undo a "case 7" journal file encryption */
-    case 2: /* Reload a page */
-    case 3: /* Load a page */
-      if (CodecHasReadCipher(codec))
-      {
-        rc = CodecDecrypt(codec, nPageNum, (unsigned char*) data, pageSize);
-        if (rc != SQLITE_OK) reportCodecError(CodecGetBtree(codec), rc);
-      }
-      break;
-
-    case 6: /* Encrypt a page for the main database file */
-      if (CodecHasWriteCipher(codec))
-      {
-        unsigned char* pageBuffer = CodecGetPageBuffer(codec);
-        memcpy(pageBuffer, data, pageSize);
-        data = pageBuffer;
-        rc = CodecEncrypt(codec, nPageNum, (unsigned char*) data, pageSize, 1);
-        if (rc != SQLITE_OK) reportCodecError(CodecGetBtree(codec), rc);
-      }
-      break;
-
-    case 7: /* Encrypt a page for the journal file */
-      /* Under normal circumstances, the readkey is the same as the writekey.  However,
-         when the database is being rekeyed, the readkey is not the same as the writekey.
-         The rollback journal must be written using the original key for the
-         database file because it is, by nature, a rollback journal.
-         Therefore, for case 7, when the rollback is being written, always encrypt using
-         the database's readkey, which is guaranteed to be the same key that was used to
-         read the original data.
-      */
-      if (CodecHasReadCipher(codec))
-      {
-        unsigned char* pageBuffer = CodecGetPageBuffer(codec);
-        memcpy(pageBuffer, data, pageSize);
-        data = pageBuffer;
-        rc = CodecEncrypt(codec, nPageNum, (unsigned char*) data, pageSize, 0);
-        if (rc != SQLITE_OK) reportCodecError(CodecGetBtree(codec), rc);
-      }
-      break;
-  }
-  return data;
-}
-
-void* mySqlite3PagerGetCodec(
-  Pager *pPager
-);
-
-void mySqlite3PagerSetCodec(
-  Pager *pPager,
-  void *(*xCodec)(void*,void*,Pgno,int),
-  void (*xCodecSizeChng)(void*,int,int),
-  void (*xCodecFree)(void*),
-  void *pCodec
-);
-
-static int mySqlite3AdjustBtree(Btree* pBt, int nPageSize, int nReserved, int isLegacy)
-{
-  int rc = SQLITE_OK;
-  Pager* pager = wx_sqlite3BtreePager(pBt);
-  int pagesize = wx_sqlite3BtreeGetPageSize(pBt);
-  wx_sqlite3BtreeSecureDelete(pBt, 1);
-  if (nPageSize > 0)
-  {
-    pagesize = nPageSize;
-  }
-
-  /* Adjust the page size and the reserved area */
-  if (pager->nReserve != nReserved)
-  {
-    if (isLegacy != 0)
-    {
-      pBt->pBt->btsFlags &= ~BTS_PAGESIZE_FIXED;
-    }
-    rc = wx_sqlite3BtreeSetPageSize(pBt, pagesize, nReserved, 0);
-  }
-  return rc;
-}
-
-int wx_sqlite3CodecAttach(wx_sqlite3* db, int nDb, const void* zKey, int nKey)
-{
-  /* Attach a key to a database. */
-  Codec* codec = (Codec*) wx_sqlite3_malloc(sizeof(Codec));
-  int rc = (codec != NULL) ? CodecInit(codec) : SQLITE_NOMEM;
-  if (rc != SQLITE_OK)
-  {
-    /* Unable to allocate memory for the codec base structure */
-    return rc;
-  }
-
-  wx_sqlite3_mutex_enter(db->mutex);
-  CodecSetDb(codec, db);
-
-  /* No key specified, could mean either use the main db's encryption or no encryption */
-  if (zKey == NULL || nKey <= 0)
-  {
-    /* No key specified */
-    if (nDb != 0 && nKey > 0)
-    {
-      /* Main database possibly encrypted, no key explicitly given for attached database */
-      Codec* mainCodec = (Codec*) mySqlite3PagerGetCodec(wx_sqlite3BtreePager(db->aDb[0].pBt));
-      /* Attached database, therefore use the key of main database, if main database is encrypted */
-      if (mainCodec != NULL && CodecIsEncrypted(mainCodec))
-      {
-        rc = CodecCopy(codec, mainCodec);
-        if (rc == SQLITE_OK)
-        {
-          CodecSetBtree(codec, db->aDb[nDb].pBt);
-          mySqlite3AdjustBtree(db->aDb[nDb].pBt, CodecGetPageSizeReadCipher(codec), CodecGetReservedReadCipher(codec), CodecGetLegacyReadCipher(codec));
-#if (SQLITE_VERSION_NUMBER >= 3006016)
-          mySqlite3PagerSetCodec(wx_sqlite3BtreePager(db->aDb[nDb].pBt), wx_sqlite3Codec, wx_sqlite3CodecSizeChange, wx_sqlite3CodecFree, codec);
-#else
-#if (SQLITE_VERSION_NUMBER >= 3003014)
-          wx_sqlite3PagerSetCodec(wx_sqlite3BtreePager(db->aDb[nDb].pBt), wx_sqlite3Codec, codec);
-#else
-          wx_sqlite3pager_set_codec(wx_sqlite3BtreePager(db->aDb[nDb].pBt), wx_sqlite3Codec, codec);
-#endif
-          db->aDb[nDb].pAux = codec;
-          db->aDb[nDb].xFreeAux = wx_sqlite3CodecFree;
-#endif
-        }
-        else
-        {
-          /* Replicating main codec failed, do not attach incomplete codec */
-          wx_sqlite3CodecFree(codec);
-        }
-      }
-      else
-      {
-        /* Main database not encrypted */
-        wx_sqlite3CodecFree(codec);
-      }
-    }
-    else
-    {
-      /* Main database not encrypted, no key given for attached database */
-      wx_sqlite3CodecFree(codec);
-    }
-  }
-  else
-  {
-    /* Key specified, setup encryption key for database */
-    CodecSetBtree(codec, db->aDb[nDb].pBt);
-    rc = CodecSetup(codec, GetCipherType(db), (char*) zKey, nKey);
-    if (rc == SQLITE_OK)
-    {
-      mySqlite3AdjustBtree(db->aDb[nDb].pBt, CodecGetPageSizeReadCipher(codec), CodecGetReservedReadCipher(codec), CodecGetLegacyReadCipher(codec));
-#if (SQLITE_VERSION_NUMBER >= 3006016)
-      mySqlite3PagerSetCodec(wx_sqlite3BtreePager(db->aDb[nDb].pBt), wx_sqlite3Codec, wx_sqlite3CodecSizeChange, wx_sqlite3CodecFree, codec);
-#else
-#if (SQLITE_VERSION_NUMBER >= 3003014)
-      wx_sqlite3PagerSetCodec(wx_sqlite3BtreePager(db->aDb[nDb].pBt), wx_sqlite3Codec, codec);
-#else
-      wx_sqlite3pager_set_codec(wx_sqlite3BtreePager(db->aDb[nDb].pBt), wx_sqlite3Codec, codec);
-#endif
-      db->aDb[nDb].pAux = codec;
-      db->aDb[nDb].xFreeAux = wx_sqlite3CodecFree;
-#endif
-    }
-    else
-    {
-      /* Setting up codec failed, do not attach incomplete codec */
-      wx_sqlite3CodecFree(codec);
-    }
-  }
-
-  wx_sqlite3_mutex_leave(db->mutex);
-
-  return rc;
-}
-
-void wx_sqlite3CodecGetKey(wx_sqlite3* db, int nDb, void** zKey, int* nKey)
-{
-  /*
-  // The unencrypted password is not stored for security reasons
-  // therefore always return NULL
-  // If the main database is encrypted a key length of 1 is returned.
-  // In that case an attached database will get the same encryption key
-  // as the main database if no key was explicitly given for the attached database.
-  */
-  Codec* mainCodec = (Codec*) mySqlite3PagerGetCodec(wx_sqlite3BtreePager(db->aDb[0].pBt));
-  int keylen = (mainCodec != NULL && CodecIsEncrypted(mainCodec)) ? 1 : 0;
-  *zKey = NULL;
-  *nKey = keylen;
-}
-
-static int dbFindIndex(wx_sqlite3* db, const char* zDb)
-{
-  int dbIndex = 0;
-  if (zDb != NULL)
-  {
-    int found = 0;
-    int index;
-    for (index = 0; found == 0 && index < db->nDb; ++index)
-    {
-      struct Db* pDb = &db->aDb[index];
-#if (SQLITE_VERSION_NUMBER >= 3015000)
-      if (strcmp(pDb->zDbSName, zDb) == 0)
-#else
-      if (strcmp(pDb->zName, zDb) == 0)
-#endif
-      {
-        found = 1;
-        dbIndex = index;
-      }
-    }
-    if (found == 0) dbIndex = 0;
-  }
-  return dbIndex;
-}
-
-int wx_sqlite3_key(wx_sqlite3 *db, const void *zKey, int nKey)
-{
-  /* The key is only set for the main database, not the temp database  */
-  return wx_sqlite3_key_v2(db, "main", zKey, nKey);
-}
-
-int wx_sqlite3_key_v2(wx_sqlite3 *db, const char *zDbName, const void *zKey, int nKey)
-{
-  int rc = SQLITE_ERROR;
-  if ((db != NULL) && (zKey != NULL) && (nKey > 0))
-  {
-    /* The key is only set for the main database, not the temp database  */
-    int dbIndex = dbFindIndex(db, zDbName);
-    rc = wx_sqlite3CodecAttach(db, dbIndex, zKey, nKey);
-  }
-  return rc;
-}
-
-int wx_sqlite3_rekey_v2(wx_sqlite3 *db, const char *zDbName, const void *zKey, int nKey)
-{
-  /* Changes the encryption key for an existing database. */
-  int dbIndex = dbFindIndex(db, zDbName);
-  int rc = SQLITE_ERROR;
-  Btree* pBt = db->aDb[dbIndex].pBt;
-  int nReserved;
-  Pager* pPager;
-  Codec* codec;
-
-  wx_sqlite3BtreeEnter(pBt);
-  nReserved = wx_sqlite3BtreeGetReserveNoMutex(pBt);
-  wx_sqlite3BtreeLeave(pBt);
-
-  pPager = wx_sqlite3BtreePager(pBt);
-  codec = (Codec*) mySqlite3PagerGetCodec(pPager);
-
-  if ((zKey == NULL || nKey == 0) && (codec == NULL || !CodecIsEncrypted(codec)))
-  {
-    /* Database not encrypted and key not specified, therefore do nothing	*/
-    return SQLITE_OK;
-  }
-
-  wx_sqlite3_mutex_enter(db->mutex);
-
-  if (codec == NULL || !CodecIsEncrypted(codec))
-  {
-    /* Database not encrypted, but key specified, therefore encrypt database	*/
-    if (codec == NULL)
-    {
-      codec = (Codec*) wx_sqlite3_malloc(sizeof(Codec));
-      rc = (codec != NULL) ? CodecInit(codec) : SQLITE_NOMEM;
-    }
-    if (rc == SQLITE_OK)
-    {
-      CodecSetDb(codec, db);
-      CodecSetBtree(codec, pBt);
-      rc = CodecSetupWriteCipher(codec, GetCipherType(db), (char*) zKey, nKey);
-    }
-    if (rc == SQLITE_OK)
-    {
-      int nReservedWriteCipher;
-
-      CodecSetHasReadCipher(codec, 0); /* Original database is not encrypted */
-      mySqlite3AdjustBtree(pBt, CodecGetPageSizeWriteCipher(codec), CodecGetReservedWriteCipher(codec), CodecGetLegacyWriteCipher(codec));
-#if (SQLITE_VERSION_NUMBER >= 3006016)
-      mySqlite3PagerSetCodec(pPager, wx_sqlite3Codec, wx_sqlite3CodecSizeChange, wx_sqlite3CodecFree, codec);
-#else
-#if (SQLITE_VERSION_NUMBER >= 3003014)
-      wx_sqlite3PagerSetCodec(pPager, wx_sqlite3Codec, codec);
-#else
-      wx_sqlite3pager_set_codec(pPager, wx_sqlite3Codec, codec);
-#endif
-      db->aDb[dbIndex].pAux = codec;
-      db->aDb[dbIndex].xFreeAux = wx_sqlite3CodecFree;
-#endif
-      nReservedWriteCipher = CodecGetReservedWriteCipher(codec);
-      if (nReserved != nReservedWriteCipher)
-      {
-        /* Use VACUUM to change the number of reserved bytes */
-        char* err;
-        rc = wx_sqlite3RunVacuumForRekey(&err, db, dbIndex, nReservedWriteCipher);
-        goto leave_rekey;
-      }
-    }
-    else
-    {
-      return rc;
-    }
-  }
-  else if (zKey == NULL || nKey == 0)
-  {
-    /* Database encrypted, but key not specified, therefore decrypt database */
-    /* Keep read key, drop write key */
-    CodecSetHasWriteCipher(codec, 0);
-    if (nReserved > 0)
-    {
-      /* Use VACUUM to change the number of reserved bytes */
-      char* err;
-      rc = wx_sqlite3RunVacuumForRekey(&err, db, dbIndex, 0);
-      goto leave_rekey;
-    }
-  }
-  else
-  {
-    /* Database encrypted and key specified, therefore re-encrypt database with new key */
-    /* Keep read key, change write key to new key */
-    rc = CodecSetupWriteCipher(codec, GetCipherType(db), (char*) zKey, nKey);
-    if (rc == SQLITE_OK)
-    {
-      int nReservedWriteCipher = CodecGetReservedWriteCipher(codec);
-      if (nReserved != nReservedWriteCipher)
-      {
-        /* Use VACUUM to change the number of reserved bytes */
-        char* err;
-        rc = wx_sqlite3RunVacuumForRekey(&err, db, dbIndex, nReservedWriteCipher);
-        goto leave_rekey;
-      }
-    }
-    else
-    {
-      goto leave_rekey;
-    }
-  }
-
-  /* Start transaction */
-  rc = wx_sqlite3BtreeBeginTrans(pBt, 1);
-  if (!rc)
-  {
-    int pageSize = wx_sqlite3BtreeGetPageSize(pBt);
-    Pgno nSkip = WX_PAGER_MJ_PGNO(pageSize);
-#if (SQLITE_VERSION_NUMBER >= 3003014)
-    DbPage *pPage;
-#else
-    void *pPage;
-#endif
-    Pgno n;
-    /* Rewrite all pages using the new encryption key (if specified) */
-#if (SQLITE_VERSION_NUMBER >= 3007001)
-    Pgno nPage;
-    int nPageCount = -1;
-    wx_sqlite3PagerPagecount(pPager, &nPageCount);
-    nPage = nPageCount;
-#elif (SQLITE_VERSION_NUMBER >= 3006000)
-    int nPageCount = -1;
-    int rc = wx_sqlite3PagerPagecount(pPager, &nPageCount);
-    Pgno nPage = (Pgno) nPageCount;
-#elif (SQLITE_VERSION_NUMBER >= 3003014)
-    Pgno nPage = wx_sqlite3PagerPagecount(pPager);
-#else
-    Pgno nPage = wx_sqlite3pager_pagecount(pPager);
-#endif
-
-    for (n = 1; rc == SQLITE_OK && n <= nPage; n++)
-    {
-      if (n == nSkip) continue;
-#if (SQLITE_VERSION_NUMBER >= 3010000)
-      rc = wx_sqlite3PagerGet(pPager, n, &pPage, 0);
-#elif (SQLITE_VERSION_NUMBER >= 3003014)
-      rc = wx_sqlite3PagerGet(pPager, n, &pPage);
-#else
-      rc = wx_sqlite3pager_get(pPager, n, &pPage);
-#endif
-      if (!rc)
-      {
-#if (SQLITE_VERSION_NUMBER >= 3003014)
-        rc = wx_sqlite3PagerWrite(pPage);
-        wx_sqlite3PagerUnref(pPage);
-#else
-        rc = wx_sqlite3pager_write(pPage);
-        wx_sqlite3pager_unref(pPage);
-#endif
-      }
-    }
-  }
-
-  if (rc == SQLITE_OK)
-  {
-    /* Commit transaction if all pages could be rewritten */
-    rc = wx_sqlite3BtreeCommit(pBt);
-  }
-  if (rc != SQLITE_OK)
-  {
-    /* Rollback in case of error */
-#if (SQLITE_VERSION_NUMBER >= 3008007)
-    /* Unfortunately this change was introduced in version 3.8.7.2 which cannot be detected using the SQLITE_VERSION_NUMBER */
-    /* That is, compilation will fail for version 3.8.7 or 3.8.7.1  ==> Please change manually ... or upgrade to 3.8.7.2 or higher */
-    wx_sqlite3BtreeRollback(pBt, SQLITE_OK, 0);
-#elif (SQLITE_VERSION_NUMBER >= 3007011)
-    wx_sqlite3BtreeRollback(pbt, SQLITE_OK);
-#else
-    wx_sqlite3BtreeRollback(pbt);
-#endif
-  }
-
-leave_rekey:
-  wx_sqlite3_mutex_leave(db->mutex);
-
-/*leave_final:*/
-  if (rc == SQLITE_OK)
-  {
-    /* Set read key equal to write key if necessary */
-    if (CodecHasWriteCipher(codec))
-    {
-      CodecCopyCipher(codec, 0);
-      CodecSetHasReadCipher(codec, 1);
-    }
-    else
-    {
-      CodecSetIsEncrypted(codec, 0);
-    }
-  }
-  else
-  {
-    /* Restore write key if necessary */
-    if (CodecHasReadCipher(codec))
-    {
-      CodecCopyCipher(codec, 1);
-    }
-    else
-    {
-      CodecSetIsEncrypted(codec, 0);
-    }
-  }
-
-  if (!CodecIsEncrypted(codec))
-  {
-    /* Remove codec for unencrypted database */
-#if (SQLITE_VERSION_NUMBER >= 3006016)
-    mySqlite3PagerSetCodec(pPager, NULL, NULL, NULL, NULL);
-#else
-#if (SQLITE_VERSION_NUMBER >= 3003014)
-    wx_sqlite3PagerSetCodec(pPager, NULL, NULL);
-#else
-    wx_sqlite3pager_set_codec(pPager, NULL, NULL);
-#endif
-    db->aDb[dbIndex].pAux = NULL;
-    db->aDb[dbIndex].xFreeAux = NULL;
-    wx_sqlite3CodecFree(codec);
-#endif
-  }
-  return rc;
-}
-
-int wx_sqlite3_rekey(wx_sqlite3 *db, const void *zKey, int nKey)
-{
-  return wx_sqlite3_rekey_v2(db, "main", zKey, nKey);
-}
-
-#endif /* SQLITE_HAS_CODEC */
-
-#endif /* SQLITE_OMIT_DISKIO */
-