hallo,

folgendes problem:

über ein c skript sollen in intervallen daten von einer db2 in eine mysql datenbank geschrieben werden.

die intervalle und so sind kein problem, nur wie spreche ich die mysql unter c an`????:eek:

Hallo,

hier ist ein kleines Beispiel.

/*

 *  mysql_auth.c

 *

 *  Copyright 1998 Frank Liu (frank@ctcqnx4.ctc.cummins.com)

 *  Distributed under the GPL

 *

 *  26 Sep 1999, version 2:

 *    1. fixed a bug where A_TABLE is defined but never used.

 *       (thanks to [email]luciano.ghezzi@linux.it[/email])

 *    2. now you can choose to use either clear text password or

 *       encrypted password in the MySQL table.

 *  13 Nov 1998, version 1:

 *    initial release

 *  Needs to be compiled/linked with MySQL libs.

 *  Assuming MySQL header files are installed in /usr/local/mysql/include

 *  and MySQL libs in /usr/local/mysql/lib

 *

 *  On my Linux box:

 *

 *  cc -I /usr/local/mysql/include -O -o mysql_auth mysql_auth.c \

       -L /usr/local/mysql/lib -lmysqlclient -lm

 *

 *  Then modify the squid.conf to use this external auth program:

 *

 *  authenticate_program /usr/local/squid/bin/mysql_auth

 *

 */


#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "mysql.h"


/* comment out next line if you use clear text password in MySQL DB */

#define ENCRYPTED_PASS


/* can use NULL for localhost, current user, or no password */

#define DBHOST "localhost"

#define DBUSER "user"

#define DB "Datenbank"

#define DBPASSWORD "passwort"


/* table for the user database for the squid authentication,

   column names for auth username and auth password */

#define A_TABLE  "tInternetzugang"

#define A_USERNAME "username"

#define A_PASSWORD "password"

#define A_GESPERRT "gesperrt"


#define BUFSIZE         256


main(int argc, char *argv[])

{

    char buf[BUFSIZE], qbuf[BUFSIZE];

    char *p;

    MYSQL mysql,*sock;

    MYSQL_RES *res;

    char passwort[BUFSIZE];


    /* make standard output line buffered */

    if (setvbuf(stdout, NULL, _IOLBF, 0) != 0)

        return;


    while (1) {

        if (fgets(buf, BUFSIZE, stdin) == NULL)

            break;

        if ((p = strchr(buf, '\n')) != NULL)

            *p = '\0';          /* strip \n */

        if ((p = strchr(buf, ' ')) == NULL) {

            (void) printf("ERR\n");

            continue;

        }

        *p++ = '\0';


        /* buf is username and p is password now */


        if (!(sock = mysql_connect(&mysql, DBHOST, DBUSER, DBPASSWORD)))

        {

            /* couldn't connect to database server */

            (void) printf("ERR\n");

            continue;

        }

        if (mysql_select_db(sock, DB))

        {

            /* couldn't use the database */

            (void) printf("ERR\n");

            mysql_close(sock);

            continue;

        }

	sprintf(qbuf, "select " A_USERNAME " from " A_TABLE " where "

                       A_USERNAME " LIKE '%s' and " A_PASSWORD


#ifdef ENCRYPTED_PASS

                      "=password('%s') and " A_GESPERRT " = 'N'", buf, p);

#else

                      "='%s' and " A_GESPERRT " = 'N'", buf, p);

#endif

        if(mysql_query(sock,qbuf) || !(res=mysql_store_result(sock)))

        {

            /* query failed */

            (void) printf("ERR\n");

            mysql_close(sock);

            continue;

        }

        if ( res->row_count !=0 )

            (void) printf("OK\n");

        else

            (void) printf("ERR\n");

        mysql_free_result(res);

        mysql_close(sock);

    }

    exit(0);

}

[/PHP]
 

Frank