在LoadRunner中实现Base64编解码

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在LoadRunner中包含头文件base64.h并使用其中的编解码函数：

#include "base64.h"
Action(){
    int res;   
    lr_save_string("你好，higkoo！","Plain1");
    b64_encode_string( lr_eval_string("{Plain1}"), "B64str" );// 编码
    lr_output_message("编码结果: \nNotify:\t%s", lr_eval_string("{B64str}") );
   
    b64_decode_string( lr_eval_string("{B64str}"), "Plain2" );// 解码
    lr_output_message("解码结果: \nNotify:\t%s", lr_eval_string("{Plain2}") );
   
    res = strcmp( lr_eval_string("{Plain1}"), lr_eval_string("{Plain2}") );// 校验
    if (res == 0) lr_output_message("\nNotify:\t校验通过！");
}

头文件base64.h源码如下：

//为LoadRunner提供Base64的编码和解码函数,有直接编码和解决的函数和输出LoadRunner参数的函数。

static unsigned char base64encode_lut[] ="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";// 编译字符表

char base64decode_lut[] = {// 解释字符表
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0, 0,62, 0, 0, 0,63,52,53,54,55,56,57,58,59,60,61, 0, 0,
    0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,
    15,16,17,18,19,20,21,22,23,24,25, 0, 0, 0, 0, 0, 0,26,27,28,
    29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,
    49,50,51, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, };

void base64encode(char *src, char *dest, int len){// 执行Base64编码
    int i=0, slen=strlen(src);
    for(i=0;i<slen && i<len;i+=3,src+=3) {
        *(dest++)=base64encode_lut[(*src&0xFC)>>0x2];
        *(dest++)=base64encode_lut[(*src&0x3)<<0x4|(*(src+1)&0xF0)>>0x4];
        *(dest++)=((i+1)<slen)?base64encode_lut[(*(src+1)&0xF)<<0x2|(*(src+2)&0xC0)>>0x6]:'=';
        *(dest++)=((i+2)<slen)?base64encode_lut[*(src+2)&0x3F]:'=';
    }
    *dest='\0';
}

void base64decode(char *src, char *dest, int len){// 执行Base64解码
    int i=0, slen=strlen(src);
    for(i=0;i<slen&&i<len;i+=4,src+=4) {
        char c1=base64decode_lut[*src], c2=base64decode_lut[*(src+1)], c3=base64decode_lut[*(src+2)], c4=base64decode_lut[*(src+3)];
        *(dest++)=(c1&0x3F)<<0x2|(c2&0x30)>>0x4;
        *(dest++)=(c3!=64)?((c2&0xF)<<0x4|(c3&0x3C)>>0x2):'\0';
        *(dest++)=(c4!=64)?((c3&0x3)<<0x6|c4&0x3F):'\0';
    }
    *dest='\0';
}

int b64_encode_string( char *source, char *lrvar ){// 对字符串进行base64编译
    int dest_size;
    int res;
    char *dest;
    dest_size = 1 + ((strlen(source)+2)/3*4);
    dest = (char *)malloc(dest_size);
    memset(dest,0,dest_size);
    base64encode(source, dest, dest_size);
    lr_save_string( dest, lrvar );
    res = strlen(dest);
    free(dest);
    return res;
}

int b64_decode_string( char *source, char *lrvar ){// 解码base64字符串
    int dest_size;
    int res;
    char *dest;
    dest_size = strlen(source);
    dest = (char *)malloc(dest_size);
    memset(dest,0,dest_size);
    base64decode(source, dest, dest_size);
    lr_save_string( dest, lrvar );
    res = strlen(dest);
    free(dest);
    return res;