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microser/cfg_parse/base64.cpp

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lnk commit front code
2025-01-16 16:17:01 +08:00
/**
* @file: $RCSfile: base64.cpp,v $
* @brief: base64 include
*
* @version: $Revision: 1.00 $
* @date: $Date: 2024/09/24 18:34:00 $
* @author: $Author: caizhouyu $
* @state: $State: Exp $
*
* @latest: $Id: base64.cpp,v 1.00 2023/10/24 18:34:00 caizhouyu Exp $
*
*/
using namespace std;
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include "../mms/db_interface.h"
#include "../json/cjson.h"//WW 2023-08-27<32><37><EFBFBD><EFBFBD>json<6F><6E><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
#include "../include/curl/curl.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
// Base64 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
const char base64_chars[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";
//base64 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
static const unsigned char base64_decode_table[] = {
//ÿ<><C3BF>16<31><36>
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, //1 - 16
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, //17 - 32
0,0,0,0,0,0,0,0,0,0,0,62,0,0,0,63, //33 - 48
52,53,54,55,56,57,58,59,60,61,0,0,0,0,0,0, //49 - 64
0,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14, //65 - 80
15,16,17,18,19,20,21,22,23,24,25,0,0,0,0,0, //81 - 96
0,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40, //97 - 112
41,42,43,44,45,46,47,48,49,50,51,0,0,0,0,0 //113 - 128
};
/**
* @brief base64_decode base64<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param indata <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param inlen <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD>С
* @param outdata <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param outlen <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD>С
* @return int 0<EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD> -1<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* ע<EFBFBD>⣺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵĴ<EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4<EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD>
*/
int base64_decode(const char* indata, int inlen, char* outdata, long* outlen)
{
if (indata == NULL || inlen <= 0 || (outdata == NULL && outlen == NULL)) {
return -1;
}
if (inlen < 4 || inlen % 4 != 0) { //<2F><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3>Ȳ<EFBFBD><C8B2><EFBFBD>4<EFBFBD>ı<EFBFBD><C4B1><EFBFBD> //inlen < 4 ||
return -1;
}
int i, j;
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int len = inlen / 4 * 3;
if (indata[inlen - 1] == '=') {
len--;
}
if (indata[inlen - 2] == '=') {
len--;
}
if (outdata != NULL) {
for (i = 0, j = 0; i < inlen; i += 4, j += 3) {
outdata[j] = (base64_decode_table[(unsigned char)indata[i]] << 2) | (base64_decode_table[(unsigned char)indata[i + 1]] >> 4);
outdata[j + 1] = (base64_decode_table[(unsigned char)indata[i + 1]] << 4) | (base64_decode_table[(unsigned char)indata[i + 2]] >> 2);
outdata[j + 2] = (base64_decode_table[(unsigned char)indata[i + 2]] << 6) | (base64_decode_table[(unsigned char)indata[i + 3]]);
}
}
if (outlen != NULL) {
*outlen = len;
}
return 0;
}
// Base64 <20><><EFBFBD>뺯<EFBFBD><EBBAAF>
char* base64_encode_char(const unsigned char* data, size_t input_length, size_t* output_length) {
*output_length = 4 * ((input_length + 2) / 3); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD><C8BC><EFBFBD>
char* encoded_data = (char*)malloc(*output_length + 1); // <20><><EFBFBD><EFBFBD><EFBFBD>ڴ棬+1 Ϊ '\0'
if (encoded_data == NULL) return NULL;
for (int i = 0, j = 0; i < input_length;) {
uint32_t octet_a = i < input_length ? data[i++] : 0;
uint32_t octet_b = i < input_length ? data[i++] : 0;
uint32_t octet_c = i < input_length ? data[i++] : 0;
uint32_t triple = (octet_a << 16) | (octet_b << 8) | octet_c;
encoded_data[j++] = base64_chars[(triple >> 18) & 0x3F];
encoded_data[j++] = base64_chars[(triple >> 12) & 0x3F];
encoded_data[j++] = (i * 2 / 3) < *output_length ? base64_chars[(triple >> 6) & 0x3F] : '=';
encoded_data[j++] = (i * 2 + 1 / 3) < *output_length ? base64_chars[triple & 0x3F] : '=';
}
encoded_data[*output_length] = '\0'; // <20><><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
return encoded_data;
}
/// <summary>
/// <20>ж<EFBFBD><D0B6>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>Ƿ<EFBFBD>Ϊpower{}<7D><>ʽ
/// </summary>
/// <param name="str"><3E><><EFBFBD><EFBFBD>ȡ<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD></param>
/// <param name="output"><3E><><EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD></param>
/// <param name="output_size"><3E>ֶγ<D6B6><CEB3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></param>
/// <param name="extracted_length"><3E><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD></param>
/// <returns></returns>
bool extract_if_power(const char* str, char* output, size_t output_size, size_t* extracted_length) {
const char* prefix = "power{";
size_t prefix_length = strlen(prefix);
// <20><><EFBFBD><EFBFBD>ǰ׺
if (strncmp(str, prefix, prefix_length) != 0) {
return false; // ǰ׺<C7B0><D7BA>ƥ<EFBFBD><C6A5>
}
// <20><><EFBFBD>ұպϵĻ<CFB5><C4BB><EFBFBD><EFBFBD><EFBFBD>
const char* close_brace = strchr(str + prefix_length, '}');
if (close_brace == NULL) {
return false; // û<><C3BB><EFBFBD>ҵ<EFBFBD><D2B5>պϵĻ<CFB5><C4BB><EFBFBD><EFBFBD><EFBFBD>
}
// <20><><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD>
size_t content_length = close_brace - (str + prefix_length);
if (content_length >= output_size) {
return false; // <20><><EFBFBD><EFBFBD>̫<EFBFBD><CCAB><EFBFBD><EFBFBD><EFBFBD>޷<EFBFBD><DEB7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
}
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD><DDB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
strncpy(output, str + prefix_length, content_length);
output[content_length] = '\0'; // <20><><EFBFBD>ӿ<EFBFBD><D3BF><EFBFBD>ֹ<EFBFBD><D6B9>
printf("text: %s,length:%d\n", output, content_length); // ע<>⣺<EFBFBD><E2A3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫȷ<D2AA><C8B7><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD>null<6C><6C>ֹ<EFBFBD><D6B9><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD>
*extracted_length = content_length;
return true; // <20><>ȡ<EFBFBD>ɹ<EFBFBD>
}
#ifdef __cplusplus
}
#endif
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