加密解密php代码

 
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "string.h"
  
char * key = "abcd";
  
  
PHP_FUNCTION(encode){
    long key_len = strlen(key);
    char * code, * encode_code;
    long code_len;
    if(zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &code, &code_len) == FAILURE){
        return;
    }
    encode_code = encode(code, code_len, key, key_len);
    RETURN_STRING(encode_code, 0);
}
PHP_FUNCTION(decode){
    long key_len = strlen(key);
    char * code, * decode_code;
    long code_len;
    if(zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &code, &code_len) == FAILURE){
        return;
    }
    decode_code = decode(code, code_len, key, key_len);
    RETURN_STRING(decode_code, 0);
}
PHP_FUNCTION(run){
    char * en_base64_code;
    long en_base64_code_len;
      
    char * decode_code;
    long key_len = strlen(key);
    char * eval_code;
    char * str_name;
  
    if(zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &en_base64_code, &en_base64_code_len) == FAILURE){
        return;
    }
  
    str_name = zend_make_compiled_string_description("phpencoder" TSRMLS_CC);
  
    decode_code = decode(en_base64_code, en_base64_code_len, key, key_len); //解码
    spprintf(&eval_code, 0, " ?>%s<?php ", decode_code);
    free(decode_code);
    if(zend_eval_string(eval_code, NULL, str_name TSRMLS_CC) == FAILURE){ //解析失败
        efree(str_name);
        efree(eval_code);
        php_error_docref(NULL TSRMLS_CC, E_RECOVERABLE_ERROR, "Please make sure '<?php' end with '?>'", PHP_EOL);
        RETURN_FALSE;
    }
    efree(str_name);
    efree(eval_code);
    RETURN_TRUE;
      
}
inline char * encode(char * code, long code_len, char* key, long key_len){
    char * code_encode;
    int i;
    long offset = 0, ret_len;
    code_encode = strdup(code);
  
    for(i =0; i<code_len; i++){
        if(offset == key_len){
            offset = 0;
        }
        * (code_encode + i) = * (code + i) ^ * (key + offset);
        offset ++;
    }
    return php_base64_encode(code_encode, code_len, &ret_len); //base64 加密
}
inline char * decode(char * code,long code_len, char* key, long key_len){
    char * code_decode;
    char * nobase_code;
    int i;
    long offset = 0, ret_len;
    zend_bool strict = 0;
  
    code_decode = strdup(code);
  
    nobase_code = php_base64_decode_ex((unsigned char*)code, code_len, &ret_len, strict); //解密，ret_len 返回长度
    for(i =0; i<ret_len; i++){
        if(offset == key_len){
            offset = 0;
        }
        * (code_decode + i) = * (nobase_code + i) ^ * (key + offset);
        offset ++;
    }
    * (code_decode + i) = '\\0';
    return code_decode;
}