1 files changed, 0 insertions, 242 deletions
diff --git a/src/contrib/sqlite/codecext.c b/src/contrib/sqlite/codecext.c
deleted file mode 100644
index f44c04a2e..000000000
--- a/src/contrib/sqlite/codecext.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- * Encryption codec implementation
- * (C) 2010 Olivier de Gaalon
- *
- * Botan is released under the Simplified BSD License (see license.txt)
- */
-
-#ifndef SQLITE_OMIT_DISKIO
-#ifdef SQLITE_HAS_CODEC
-
-#include "codec_c_interface.h"
-
-Bool HandleError(void *pCodec)
-{
-    const char *error = GetAndResetError(pCodec);
-    if (error) {
-        sqlite3Error((sqlite3*)GetDB(pCodec), SQLITE_ERROR, "Botan Error: %s", error);
-        return 1;
-    }
-    return 0;
-}
-
-// Guessing that "see" is related to SQLite Encryption Extension" (the semi-official, for-pay, encryption codec)
-// Just as useful for initializing Botan.
-void sqlite3_activate_see(const char *info)
-{
-    InitializeBotan();
-}
-
-// Free the encryption codec, called from pager.c (address passed in sqlite3PagerSetCodec)
-void sqlite3PagerFreeCodec(void *pCodec)
-{
-    if (pCodec)
-        DeleteCodec(pCodec);
-}
-
-// Report the page size to the codec, called from pager.c (address passed in sqlite3PagerSetCodec)
-void sqlite3CodecSizeChange(void *pCodec, int pageSize, int nReserve)
-{
-    SetPageSize(pCodec, pageSize);
-}
-
-// Encrypt/Decrypt functionality, called by pager.c
-void* sqlite3Codec(void *pCodec, void *data, Pgno nPageNum, int nMode)
-{
-    if (pCodec == NULL) //Db not encrypted
-        return data;
-
-    switch(nMode)
-    {
-    case 0: // Undo a "case 7" journal file encryption
-    case 2: // Reload a page
-    case 3: // Load a page
-        if (HasReadKey(pCodec))
-            Decrypt(pCodec, nPageNum, (unsigned char*) data);
-        break;
-    case 6: // Encrypt a page for the main database file
-        if (HasWriteKey(pCodec))
-            data = Encrypt(pCodec, nPageNum, (unsigned char*) data, 1);
-        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 writekey is the "destination key" for the rekey operation and the readkey
-    *is the key the db is currently encrypted with)
-    *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 and write the original data.
-    */
-        if (HasReadKey(pCodec))
-            data = Encrypt(pCodec, nPageNum, (unsigned char*) data, 0);
-        break;
-    }
-    
-    HandleError(pCodec);
-
-    return data;
-}
-
-int sqlite3CodecAttach(sqlite3 *db, int nDb, const void *zKey, int nKey)
-{
-    void *pCodec;
-
-    if (zKey == NULL || nKey <= 0)
-    {
-        // No key specified, could mean either use the main db's encryption or no encryption
-        if (nDb != 0 && nKey < 0)
-        {
-            //Is an attached database, therefore use the key of main database, if main database is encrypted
-            void *pMainCodec = sqlite3PagerGetCodec(sqlite3BtreePager(db->aDb[0].pBt));
-            if (pMainCodec != NULL)
-            {
-                pCodec = InitializeFromOtherCodec(pMainCodec, db);
-                sqlite3PagerSetCodec(sqlite3BtreePager(db->aDb[nDb].pBt),
-                                    sqlite3Codec,
-                                    sqlite3CodecSizeChange,
-                                    sqlite3PagerFreeCodec, pCodec);
-            }
-        }
-    }
-    else
-    {
-        // Key specified, setup encryption key for database
-        pCodec = InitializeNewCodec(db);
-        GenerateWriteKey(pCodec, (const char*) zKey, nKey);
-        SetReadIsWrite(pCodec);
-        sqlite3PagerSetCodec(sqlite3BtreePager(db->aDb[nDb].pBt),
-                            sqlite3Codec,
-                            sqlite3CodecSizeChange,
-                            sqlite3PagerFreeCodec, pCodec);
-    }
-
-    if (HandleError(pCodec))
-        return SQLITE_ERROR;
-
-    return SQLITE_OK;
-}
-
-void sqlite3CodecGetKey(sqlite3* db, int nDb, void **zKey, int *nKey)
-{
-    // The unencrypted password is not stored for security reasons
-    // therefore always return NULL
-    *zKey = NULL;
-    *nKey = -1;
-}
-
-int sqlite3_key(sqlite3 *db, const void *zKey, int nKey)
-{
-    // The key is only set for the main database, not the temp database
-    return sqlite3CodecAttach(db, 0, zKey, nKey);
-}
-
-int sqlite3_rekey(sqlite3 *db, const void *zKey, int nKey)
-{
-    // Changes the encryption key for an existing database.
-    int rc = SQLITE_ERROR;
-    Btree *pbt = db->aDb[0].pBt;
-    Pager *pPager = sqlite3BtreePager(pbt);
-    void *pCodec = sqlite3PagerGetCodec(pPager);
-
-    if ((zKey == NULL || nKey == 0) && pCodec == NULL)
-    {
-        // Database not encrypted and key not specified. Do nothing
-        return SQLITE_OK;
-    }
-
-    if (pCodec == NULL)
-    {
-        // Database not encrypted, but key specified. Encrypt database
-        pCodec = InitializeNewCodec(db);
-        GenerateWriteKey(pCodec, (const char*) zKey, nKey);
-        
-        if (HandleError(pCodec))
-            return SQLITE_ERROR;
-
-        sqlite3PagerSetCodec(pPager, sqlite3Codec, sqlite3CodecSizeChange, sqlite3PagerFreeCodec, pCodec);
-    }
-    else if (zKey == NULL || nKey == 0)
-    {
-        // Database encrypted, but key not specified. Decrypt database
-        // Keep read key, drop write key
-        DropWriteKey(pCodec);
-    }
-    else
-    {
-        // Database encrypted and key specified. Re-encrypt database with new key
-        // Keep read key, change write key to new key
-        GenerateWriteKey(pCodec, (const char*) zKey, nKey);
-        if (HandleError(pCodec))
-            return SQLITE_ERROR;
-    }
-
-    // Start transaction
-    rc = sqlite3BtreeBeginTrans(pbt, 1);
-    if (rc == SQLITE_OK)
-    {
-        // Rewrite all pages using the new encryption key (if specified)
-        int nPageCount = -1;
-        sqlite3PagerPagecount(pPager, &nPageCount);
-        Pgno nPage = (Pgno) nPageCount;
-
-        Pgno nSkip = PAGER_MJ_PGNO(pPager);
-        DbPage *pPage;
-
-        Pgno n;
-        for (n = 1; rc == SQLITE_OK && n <= nPage; n++)
-        {
-            if (n == nSkip)
-                continue;
-
-            rc = sqlite3PagerGet(pPager, n, &pPage);
-
-            if (!rc)
-            {
-                rc = sqlite3PagerWrite(pPage);
-                sqlite3PagerUnref(pPage);
-            }
-            else
-                sqlite3Error(db, SQLITE_ERROR, "%s", "Error while rekeying database page. Transaction Canceled.");
-        }
-    }
-    else
-        sqlite3Error(db, SQLITE_ERROR, "%s", "Error beginning rekey transaction. Make sure that the current encryption key is correct.");
-
-    if (rc == SQLITE_OK)
-    {
-        // All good, commit
-        rc = sqlite3BtreeCommit(pbt);
-
-        if (rc == SQLITE_OK)
-        {
-            //Database rekeyed and committed successfully, update read key
-            if (HasWriteKey(pCodec))
-                SetReadIsWrite(pCodec);
-            else //No write key == no longer encrypted
-                sqlite3PagerSetCodec(pPager, NULL, NULL, NULL, NULL); 
-        }
-        else
-        {
-            //FIXME: can't trigger this, not sure if rollback is needed, reference implementation didn't rollback
-            sqlite3Error(db, SQLITE_ERROR, "%s", "Could not commit rekey transaction.");
-        }
-    }
-    else
-    {
-        // Rollback, rekey failed
-        sqlite3BtreeRollback(pbt, SQLITE_ERROR);
-
-        // go back to read key
-        if (HasReadKey(pCodec))
-            SetWriteIsRead(pCodec);
-        else //Database wasn't encrypted to start with
-            sqlite3PagerSetCodec(pPager, NULL, NULL, NULL, NULL); 
-    }
-
-    return rc;
-}
-
-#endif // SQLITE_HAS_CODEC
-
-#endif // SQLITE_OMIT_DISKIO