c - ISO 8583 c 库解压消息

Question

我想知道如何使用 DL ISO-8583 Library 解压缩 ISO 8583 消息(C语言)oscarsanderson写的？
例如，如果我有这样的消息:这是我的代码

#include "dl_iso8583.h"
#include "dl_iso8583_defs_1993.h"
#include "dl_output.h" // for 'DL_OUTPUT_Hex'

#define ISOHEADER 4
#define ISOHEADERSTR "%04d"

int main ( void )
{
    DL_ISO8583_HANDLER isoHandler;
    DL_ISO8583_MSG     isoMsg;
    DL_UINT8           packBuf[1000];
    DL_UINT16          packedSize;
    char msg[]="0210323A40010A4180103800000000000000000420050805011392120805042004225132072000001000000115604000800411 163011511463331563GBAAASDD ERRR 1300101B54391001000017654350000000000090300000268410000000300000000000000898100009431000000000000000000 000000000000000036000299";

    unsigned short iso_req_size,iso_resp_size;
    char iso_header[ISOHEADER+1];
     char iso_req_buf[10000];
     char iso_resp_buf[10000];

    /* get ISO-8583 1993 handler */
    DL_ISO8583_DEFS_1993_GetHandler(&isoHandler);
    DL_ISO8583_MSG_Init(NULL,0,&isoMsg);

    // Unpack message
    DL_ISO8583_MSG_Init(NULL,0,&isoMsg);

    (void)DL_ISO8583_MSG_Unpack(&isoHandler,msg,strlen(msg),&isoMsg);
    DL_ISO8583_MSG_Dump(stdout,NULL,&isoHandler,&isoMsg);
    DL_ISO8583_MSG_Free(&isoMsg);

    return 0;

}

我想在解包邮件时检索这些字段:

    [000]:    210
    [003]:    380000
    [004]:    000000000000
    [007]:    0420050805
    [011]:    011392
    [012]:    120805
    [013]:    0420
    [015]:    0422
    [018]:    5132
    [039]:    00
    [049]:    000

Answer 1

您必须将您的消息从十六进制格式转换为二进制格式。 像这样

binMsg[0]=0x02
binMsg[1]=0x10
binMsg[2]=0x32
binMsg[3]=0x3A
binMsg[4]=0x40

直到最后一口。

并使用:

(void)DL_ISO8583_MSG_Unpack(&isoHandler,binMsg,strlen(msg)/2,&isoMsg);