汽车门户网站建设/市场营销方案范文

/**

[email protected] 对于url中的一些特殊字符会被转义以利传输,

* 并且， 归档服务器上, php写入cookie中的值可能存在特殊字符， 需要转换

*

*参考: http://www.blooberry.com/indexdot/html/topics/urlencoding.htm

* http://www.december.com/html/spec/esccodes.html

*

[email protected][in,out] data 需要处理的数据， 处理完后， 这个数据会被修改为期待的数据

[email protected][in] data_len data中的实际数据长度

*

*/

int escape_url_character(char *data, int data_len)

{

/* 下面只列出来了一些加密用到的字符， 而没有列出所有的字符, 主要是空格, /, +, = */

char *transfer_table[][2] = { {"+", "2B"}, {"[","5B"},{"]","5D"},{"`","60"},{";","3B"},{"/","2F"},{"?","3F"},{":","3A"},{"@","40"},{"=","3D"},{"&","26"},{"$","24"},{" ","20"},{"","3E"},{"#","23"},{"%","25"},{"{","7B"},{"}","7D"},{"|","7C"},{"\\","5C"},{"^","5E"},{"~","7E"}, {NULL, NULL} };

int i = 0, j;

char *buf = calloc(data_len + 1, sizeof(char));

while( i < data_len ){

if( '%' != data[i]){

strncat(buf, data+i, 1);

i++;

continue;

}

/* 查表 */

j = 0;

while( NULL != transfer_table[j][1] ){

if( 0 == strncasecmp(data+i+1, transfer_table[j][1], 2 )){

strncat(buf, transfer_table[j][0], 1);

i += 3;

break;

}

j++;

}

/* 对于表中不存在的字符不作处理, 但输出一条日志 */

if( NULL == transfer_table[j][1] ){

strncat(buf, data+i, 1);

printf("escape_url_character: unhandled sequence: %s\n", data+i);

i++;

}

}

memset(data, 0, data_len);

strcpy(data, buf);

free(buf);

return 0;

}