/* Processed by ecpg (15.18 (Debian 15.18-0+deb12u1)) */
/* These include files are added by the preprocessor */
#include <ecpglib.h>
#include <ecpgerrno.h>
#include <sqlca.h>
/* End of automatic include section */

#line 1 "app/online/mg_ol_0021.pgc"
/* @tier easy @module mg @transform msg-gateway-online */
/*
 * mg_ol_0021.pgc - 전문게이트웨이 카드번호 마스킹 서비스 (MG_OL_0021)  [tier=easy]
 *
 * PCI-DSS 노출규칙에 따라 카드번호(PAN)를 앞 6자리(BIN)와 뒤 4자리만
 * 노출하고 중간 자릿수를 '*' 로 마스킹한다. 12자리 미만 등 마스킹 불가
 * 길이는 전량 마스킹(fail-safe)한다. 마스킹 결과를 전문 카드필드 규격
 * (16)으로 정렬해 MASKED 로 반환한다.
 */
#include <stdio.h>
#include <string.h>

#include "txcore.h"
#include "txcore_dbio.h"
#include "acq_util.h"
#include "mg_core.h"


#line 1 "/usr/include/postgresql/sqlca.h"
#ifndef POSTGRES_SQLCA_H
#define POSTGRES_SQLCA_H

#ifndef PGDLLIMPORT
#if  defined(WIN32) || defined(__CYGWIN__)
#define PGDLLIMPORT __declspec (dllimport)
#else
#define PGDLLIMPORT
#endif							/* __CYGWIN__ */
#endif							/* PGDLLIMPORT */

#define SQLERRMC_LEN	150

#ifdef __cplusplus
extern "C"
{
#endif

struct sqlca_t
{
	char		sqlcaid[8];
	long		sqlabc;
	long		sqlcode;
	struct
	{
		int			sqlerrml;
		char		sqlerrmc[SQLERRMC_LEN];
	}			sqlerrm;
	char		sqlerrp[8];
	long		sqlerrd[6];
	/* Element 0: empty						*/
	/* 1: OID of processed tuple if applicable			*/
	/* 2: number of rows processed				*/
	/* after an INSERT, UPDATE or				*/
	/* DELETE statement					*/
	/* 3: empty						*/
	/* 4: empty						*/
	/* 5: empty						*/
	char		sqlwarn[8];
	/* Element 0: set to 'W' if at least one other is 'W'	*/
	/* 1: if 'W' at least one character string		*/
	/* value was truncated when it was			*/
	/* stored into a host variable.             */

	/*
	 * 2: if 'W' a (hopefully) non-fatal notice occurred
	 */	/* 3: empty */
	/* 4: empty						*/
	/* 5: empty						*/
	/* 6: empty						*/
	/* 7: empty						*/

	char		sqlstate[5];
};

struct sqlca_t *ECPGget_sqlca(void);

#ifndef POSTGRES_ECPG_INTERNAL
#define sqlca (*ECPGget_sqlca())
#endif

#ifdef __cplusplus
}
#endif

#endif

#line 18 "app/online/mg_ol_0021.pgc"


#define PAN_HEAD 6   /* 앞 노출 자릿수 (BIN) */
#define PAN_TAIL 4   /* 뒤 노출 자릿수       */

TX_SERVICE(MG_OL_0021, ctx)
{
    char card[24];
    char masked[24];
    int  len;
    int  i;

    tx_log(TX_LOG_INFO, "[MG_OL_0021] 카드번호 마스킹 서비스 진입");

    if (tx_buf_get(ctx->in, "CARDNO", card, sizeof(card)) != TX_OK ||
        card[0] == '\0') {
        tx_log(TX_LOG_ERROR, "[MG_OL_0021] 카드번호(CARDNO) 누락");
        tx_return(ctx, TX_EINVAL, ctx->out);
        return;
    }
    len = (int)strlen(card);

    /* 카드번호는 숫자만 허용 (구분자 포함시 검증 실패) */
    for (i = 0; i < len; i++) {
        if (card[i] < '0' || card[i] > '9') {
            tx_log(TX_LOG_WARN, "[MG_OL_0021] 카드번호 형식 오류 len=%d", len);
            tx_buf_reset(ctx->out);
            tx_buf_sets(ctx->out, "RESPCODE", RESP_INVALID);
            tx_return(ctx, TX_FAIL, ctx->out);
            return;
        }
    }

    memset(masked, 0, sizeof(masked));

    if (len < PAN_HEAD + PAN_TAIL + 1) {
        /* 노출규칙 적용 불가 → 전량 마스킹(fail-safe) */
        for (i = 0; i < len; i++)
            masked[i] = '*';
        tx_log(TX_LOG_WARN, "[MG_OL_0021] 짧은 PAN 전량마스킹 len=%d", len);
    } else {
        for (i = 0; i < len; i++) {
            if (i < PAN_HEAD || i >= len - PAN_TAIL)
                masked[i] = card[i];   /* 앞6/뒤4 노출 */
            else
                masked[i] = '*';       /* 중간 마스킹 */
        }
    }

    tx_buf_reset(ctx->out);
    tx_buf_sets(ctx->out, "RESPCODE", RESP_OK);
    tx_buf_sets(ctx->out, "MASKED", masked);
    tx_buf_setlong(ctx->out, "PANLEN", (long)len);

    /* 마스킹 이력(mg_mask_log)을 임베디드 SQL 로 적재 (원본 PAN 은 저장하지 않음) */
    {
        /* exec sql begin declare section */
         
         
        
#line 75 "app/online/mg_ol_0021.pgc"
 char h_mk_masked [ 24 ] ;
 
#line 76 "app/online/mg_ol_0021.pgc"
 long h_mk_len ;
/* exec sql end declare section */
#line 77 "app/online/mg_ol_0021.pgc"


        strncpy(h_mk_masked, masked, sizeof(h_mk_masked) - 1);
        h_mk_masked[sizeof(h_mk_masked) - 1] = '\0';
        h_mk_len = (long)len;

        if (tx_begin() == TX_OK) {
            { ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "insert into mg_mask_log ( masked_pan , pan_len ) values ( $1  , $2  )", 
	ECPGt_char,(h_mk_masked),(long)24,(long)1,(24)*sizeof(char), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, 
	ECPGt_long,&(h_mk_len),(long)1,(long)1,sizeof(long), 
	ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EOIT, ECPGt_EORT);}
#line 86 "app/online/mg_ol_0021.pgc"

            if (sqlca.sqlcode != TX_SQL_OK) {
                TX_DBIO_LOG_ERR("INSERT mg_mask_log");
                tx_abort();
            } else {
                tx_commit();
            }
        }
    }

    tx_log(TX_LOG_INFO, "[MG_OL_0021] 마스킹 완료 len=%d masked=%s", len, masked);
    tx_return(ctx, TX_OK, ctx->out);
}
