home *** CD-ROM | disk | FTP | other *** search
- // BDE32 3.x - (C) Copyright 1996 by Borland International
-
- // password.c
- #include "snipit.h"
-
- #define NAMELEN 10 // Length of the name fields
- #define PLACELEN 20 // Length of the POB field
- #define DATELEN 11 // Display length for a date field: mm\dd\yyyy
-
- static const char szTblName[] = "People";
- static char szProbTblName[DBIMAXPATHLEN] = "ProbTbl";
- static const char szTblType[] = szPARADOX;
-
- static const char szPassword1[] = "Password1";
- static const char szPassword2[] = "Password2";
-
- static SNIPFAR FLDDesc fldDesc[] = {
- { // Field 1 - First Name
- 1, // Field number
- "First Name", // Field name
- fldZSTRING, // Field type
- fldUNKNOWN, // Field subtype
- NAMELEN, // Field size ( 1 or 0, except
- // BLOb or CHAR field )
- 0, // Decimal places ( 0 )
- // computed
- 0, // Offset in record ( 0 )
- 0, // Length in bytes ( 0 )
- 0, // For Null bits ( 0 )
- fldvNOCHECKS, // Validity checks ( 0 )
- fldrREADWRITE // Rights
- },
- { // Field 2 - Middle Name
- 2, "Middle Name", fldZSTRING, fldUNKNOWN,
- NAMELEN, 0, 0, 0, 0,
- fldvNOCHECKS, fldrREADWRITE
- },
- { // Field 3 - Last Name
- 3, "Last Name", fldZSTRING, fldUNKNOWN,
- NAMELEN, 0, 0, 0, 0,
- fldvNOCHECKS, fldrREADWRITE
- },
- { // Field 4 - Date of Birth
- 4, "DOB", fldDATE, fldUNKNOWN,
- 0, 0, 0, 0, 0,
- fldvNOCHECKS, fldrREADWRITE
- },
- { // Field 5 - Place of Birth
- 5, "POB", fldZSTRING, fldUNKNOWN,
- PLACELEN, 0, 0, 0, 0,
- fldvNOCHECKS, fldrREADWRITE
- }
- }; // Array of field descriptors
-
- // Index descriptor.
- static SNIPFAR IDXDesc idxDesc[] = {
- { // Primary Index - Full Name
- "Full Name", // Name
- 1, // Number
- { NULL }, // Tag name ( for dBase )
- { NULL }, // Optional Format ( BTREE,
- // HASH, etc )
- TRUE, // Primary?
- TRUE, // Unique?
- FALSE, // Descending?
- TRUE, // Maintained?
- FALSE, // SubSet?
- FALSE, // Expression index?
- NULL, // for QBE only
- 3, // Fields in key
- 1, // Length in bytes
- FALSE, // Index out of date?
- 0, // Key type of expression
- { 1,2,3 }, // Array of field numbers
- { 0 }, // Key expression
- { 0 }, // Key condition
- FALSE, // Case insensitive
- 0, // Block size in bytes
- 0 // Restructure number
- }
- };
-
- // The number of fields in the table.
- static const UINT16 uNumFields = sizeof(fldDesc) / sizeof (fldDesc[0]);
-
- // Number of indexes to be created when the table is created.
- static const UINT16 uNumIndexes = sizeof(idxDesc) / sizeof(idxDesc[0]);
-
- static DBIResult ResetPassTable(hDBIDb hDb, pCHAR pszPass, pCHAR pszNewPass);
- static DBIResult CreatePassTable(phDBIDb phDb, pCHAR pszPass);
- static DBIResult AddRecord(phDBICur hCur, pCHAR pszFirst, pCHAR pszMiddle,
- pCHAR pszLast, UINT16 uMonth, UINT16 uDay,
- UINT16 uYear, pCHAR pszPOB);
-
- //=====================================================================
- // Function:
- // Password();
- //
- // Description:
- // This example will create the table with the first password. It
- // will then attempt to open the table and fail because the session
- // password is not set. It will add the password to the session and
- // open the table, then restructure the table to use a different
- // password.
- //=====================================================================
- void
- Password (void)
- {
- DBIResult rslt; // Value returned from IDAPI functions
- hDBIDb hDb; // Database handle
- hDBICur hCur; // Cursor handle
-
- Screen("*** Password Example ***\r\n");
-
- BREAK_IN_DEBUGGER();
-
- Screen(" Initializing IDAPI...");
- if (InitAndConnect(&hDb) != DBIERR_NONE)
- {
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- Screen("\r\n Setting the database directory...");
- rslt = DbiSetDirectory(hDb, (pCHAR) szTblDirectory);
- ChkRslt(rslt, "SetDirectory");
-
- if (CreatePassTable(&hDb, (pCHAR) szPassword1)!= DBIERR_NONE)
- {
- rslt = DbiDeleteTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType);
- ChkRslt(rslt, "DeleteTable");
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- Screen(" Password set to: %s...", (pCHAR) szPassword1);
- Screen(" Open the table which we created...");
- Screen(" Error expected as we have no passwords set for the "
- "table...");
- rslt = DbiOpenTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType,
- NULL, NULL, 0, dbiREADWRITE, dbiOPENSHARED,
- xltFIELD, FALSE, NULL, &hCur);
- if (ChkRslt(rslt, "OpenTable") != DBIERR_NONE)
- {
- // Abort the example if this is not the expected error.
- if (rslt != DBIERR_NOTSUFFTABLERIGHTS)
- {
- rslt = DbiDeleteTable(hDb, (pCHAR) szTblName,(pCHAR) szTblType);
- ChkRslt(rslt, "DeleteTable");
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
- }
-
- // Add a password to the session. IDAPI will check the password(s)
- // that are active in the session and check if they match the password
- // that is inside the table.
- Screen("\r\n Add the password, '%s', to the session..." ,
- (pCHAR) szPassword1);
- rslt = DbiAddPassword((pCHAR) szPassword1);
- ChkRslt(rslt, "AddPassword");
-
- Screen(" Try again to open the table we created...");
- rslt = DbiOpenTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType,
- NULL, NULL, 0, dbiREADWRITE, dbiOPENSHARED,
- xltFIELD, FALSE, NULL, &hCur);
- if (ChkRslt(rslt, "OpenTable") != DBIERR_NONE)
- {
- rslt = DbiDeleteTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType);
- ChkRslt(rslt, "DeleteTable");
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- Screen("\r\n Table opened succesfully...");
-
- rslt = DbiCloseCursor(&hCur);
- ChkRslt(rslt, "CloseCursor");
-
- Screen("\r\n Restructure the table to have a new password...");
- if (ResetPassTable(hDb, (pCHAR) szPassword1, (pCHAR) szPassword2)
- != DBIERR_NONE)
- {
- rslt = DbiDeleteTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType);
- ChkRslt(rslt, "DeleteTable");
- CloseDbAndExit(&hDb);
- Screen("\r\n*** End of Example ***");
- return;
- }
-
- Screen(" We have changed the password from '%s' to '%s'...",
- (pCHAR) szPassword1, (pCHAR) szPassword2);
- Screen(" Try to open the table which we created...");
- Screen(" Error expected as we have no passwords set for the "
- "table...");
-
- rslt = DbiOpenTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType,
- NULL, NULL, 0, dbiREADWRITE, dbiOPENSHARED,
- xltFIELD, FALSE, NULL, &hCur);
- ChkRslt(rslt, "OpenTable");
-
- Screen("\r\n Add the correct password, '%s', to the "
- " session...", (pCHAR) szPassword2);
- rslt = DbiAddPassword((pCHAR) szPassword2);
- ChkRslt(rslt, "AddPassword");
-
- Screen(" Try again to open the table we created...");
- rslt = DbiOpenTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType,
- NULL, NULL, 0, dbiREADWRITE, dbiOPENSHARED,
- xltFIELD, FALSE, NULL, &hCur);
- ChkRslt(rslt, "OpenTable");
-
- Screen("\r\n Table opened succesfully...");
- Screen("\r\n Close the table...");
- rslt = DbiCloseCursor(&hCur);
- ChkRslt(rslt, "CloseCursor");
-
- Screen(" Delete the table and remaining indexes...");
- rslt = DbiDeleteTable(hDb, (pCHAR) szTblName, (pCHAR) szTblType);
- ChkRslt(rslt, "DeleteTable");
-
- Screen(" Close the database and exit IDAPI...");
- CloseDbAndExit(&hDb);
-
- Screen("\r\n*** End of Example ***");
- }
-
- //=====================================================================
- // Function:
- // ResetPassTable(hDb, pszPass, pszNewPass);
- //
- // Input: hb - Database handle
- // pszPass - Session password
- // pszNewPass - New password for the table (pCHAR)
- //
- // Return: result of the table initialization.
- //
- // Description:
- // This function will add a password to the session, close the
- // table, and restructure the table to change the password
- // that is presently set in the table. Then it will drop the
- // password from the session.
- //=====================================================================
- DBIResult
- ResetPassTable (hDBIDb hDb, pCHAR pszPass, pCHAR pszNewPass)
- {
- DBIResult rslt; // Value returned from IDAPI functions
- CRTblDesc crTblDesc; // Table descriptor
-
- // Initialize the create table descriptor
- memset(&crTblDesc, 0, sizeof(CRTblDesc));
- strcpy(crTblDesc.szTblName, szTblName);
- strcpy(crTblDesc.szTblType, szTblType);
- crTblDesc.bProtected = TRUE;
- strcpy(crTblDesc.szPassword, pszNewPass);
- crTblDesc.bPack = TRUE;
-
- rslt = DbiAddPassword((pCHAR) pszPass);
- ChkRslt(rslt, "AddPassword");
-
- // Restructure the table using information supplied in the table
- // descriptor above.
- rslt = DbiDoRestructure(hDb, 1, &crTblDesc, NULL,
- NULL, (pCHAR) szProbTblName, FALSE);
- if (ChkRslt(rslt, "DoRestructure") != DBIERR_NONE)
- {
- return DBIERR_INVALIDRESTROP;
- }
-
- // Release the password from the session so we can test the
- // password functions. We opened it in the function above so now
- // we need to drop it to retest the newly added table.
- rslt = DbiDropPassword((pCHAR) pszPass);
- ChkRslt(rslt, "DropPassword");
-
- return rslt;
- }
-
-
- //=====================================================================
- // Function:
- // CreatePassTable();
- //
- // Input: pointer to the database handle (phDBIDb), password (pCHAR).
- //
- // Return: result of the table initialization.
- //
- // Description:
- // This function will first create the table with a password.
- // Then it will open the table, fill it with data, and close
- // the table.
- //=====================================================================
- DBIResult
- CreatePassTable (phDBIDb phDb, pCHAR pszPass)
- {
- DBIResult rslt; // Value returned from IDAPI functions
- hDBICur hCur; // Cursor handle for the table that is
- // created
- CRTblDesc crTblDesc; // Table descriptor
- BOOL bOverWrite = TRUE; // Overwrite, yes/no flag
-
-
- // Register the password with the session.
- rslt = DbiAddPassword((pCHAR) pszPass);
- ChkRslt(rslt, "AddPassword");
-
- // Initialize the table create descriptor.
- memset(&crTblDesc, 0, sizeof(CRTblDesc));
- strcpy(crTblDesc.szTblName, szTblName);
- strcpy(crTblDesc.szTblType, szTblType);
- crTblDesc.bProtected = TRUE;
- strcpy(crTblDesc.szPassword, pszPass);
- crTblDesc.bPack = TRUE;
- crTblDesc.iFldCount = uNumFields;
- crTblDesc.pfldDesc = fldDesc;
- crTblDesc.iIdxCount = uNumIndexes;
- crTblDesc.pidxDesc = idxDesc;
-
- Screen(" Creating table and indexes...");
- rslt = DbiCreateTable(*phDb, bOverWrite, &crTblDesc);
- if (ChkRslt(rslt, "CreateTable") != DBIERR_NONE)
- {
- return rslt;
- }
-
- // Open the table.
- rslt = DbiOpenTable(*phDb, (pCHAR) szTblName, (pCHAR) szTblType,
- NULL, NULL, 0, dbiREADWRITE, dbiOPENSHARED,
- xltFIELD, FALSE, NULL, &hCur);
- if (ChkRslt(rslt, "OpenTable") != DBIERR_NONE)
- {
- return rslt;
- }
-
- Screen(" Add records to the table...");
- AddRecord(&hCur, "Klaus", "John", "Lockwood", 7, 28, 1968,
- "Chicago");
- AddRecord(&hCur, "Tracy", "Ann", "Browning", 12, 27, 1969,
- "Hermosa Beach");
- AddRecord(&hCur, "John", "Boy", "Krull", 2, 7, 1954,
- "Ohmaha");
- AddRecord(&hCur, "Goliath", "Joel", "Raccah", 4, 13, 1970,
- "Tel Aviv");
-
- rslt = DbiCloseCursor(&hCur);
- ChkRslt(rslt, "CloseCursor");
-
- // Release the password from the session so we can test the password
- // functions.
- rslt = DbiDropPassword((pCHAR) pszPass);
- ChkRslt(rslt, "DropPassword");
-
- return rslt;
- }
-
- //=====================================================================
- // Function:
- // AddRecord(phCur, pszFirst, pszMiddle, pszLast, uMonth,
- // uDay, uYear, pszPOB);
- //
- // Input: phCur - Pointer to the cursor handle
- /// pszFirst - First name
- // pszMiddle - Middle name
- // pszLast - Last name
- // uMonth - Month of birth
- // uDay - Day of birth
- // uYear - Year of birth
- // pszPOB - Place of birth
- //
- // Return: Result of adding the record to the table
- //
- // Description:
- // This function will add a record to the given table.
- //=====================================================================
- DBIResult
- AddRecord (phDBICur phCur, pCHAR pszFirst, pCHAR pszMiddle, pCHAR pszLast,
- UINT16 uMonth, UINT16 uDay, UINT16 uYear, pCHAR pszPOB)
- {
- DBIDATE Date; // Date structure
- DBIResult rslt; // Value returned from IDAPI functions
- CURProps TblProps; // Table properties
- pBYTE pRecBuf; // Record buffer
-
- // Allocate a record buffer.
- rslt = DbiGetCursorProps(*phCur, &TblProps);
- ChkRslt(rslt, "GetCursorProps");
-
- pRecBuf = (pBYTE) malloc(TblProps.iRecBufSize * sizeof(BYTE));
- if (pRecBuf == NULL)
- {
- return DBIERR_NOMEMORY;
- }
-
- // Make sure we're starting with a clean record buffer.
- rslt = DbiInitRecord(*phCur, pRecBuf);
- ChkRslt(rslt, "InitRecord");
-
- // First Name.
- rslt = DbiPutField(*phCur, 1, pRecBuf, (pBYTE) pszFirst);
- ChkRslt(rslt, "PutField");
-
- // Middle Name.
- rslt = DbiPutField(*phCur, 2, pRecBuf, (pBYTE) pszMiddle);
- ChkRslt(rslt, "PutField");
-
- // Last Name.
- rslt = DbiPutField(*phCur, 3, pRecBuf, (pBYTE) pszLast);
- ChkRslt(rslt, "PutField");
-
- // DOB.
- rslt = DbiDateEncode(uMonth, uDay, uYear, &Date);
- ChkRslt(rslt, "DateEncode");
-
- rslt = DbiPutField(*phCur, 4, pRecBuf, (pBYTE) &Date);
- ChkRslt(rslt, "PutField");
-
- // Place of Birth.
- rslt = DbiPutField(*phCur, 5, pRecBuf, (pBYTE) pszPOB);
- ChkRslt(rslt, "PutField");
-
- rslt = DbiInsertRecord(*phCur, dbiNOLOCK, pRecBuf),
- ChkRslt(rslt, "InsertRecord");
-
- free(pRecBuf);
-
- return rslt;
- }
-