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【C】加密解密php代码
作者:mickelfeng / 发布于2015/7/9/ 1232

	#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;
	}
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