#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#define SIZE (1024 * 10)
int get_http_request(char* query)
{
//1.獲取到方法
char* method = getenv("REQUEST_METHOD");
if (method == NULL){
fprintf(stderr, "REQUEST_METHOD failed\n");
return -1;
}
//2.GET方法獲得query_string
if (strcmp(method, "GET") == 0){
char* query_string = getenv("QUERY_STRING");
if (query == NULL){
fprintf(stderr, "QUERY_STRING failed\n");
return -1;
}
strcpy(query, query_string);
}
//3.POST方法獲得centent_length和body
return 0;
}
int main()
{
//1.基於CGI協議獲取到需要的參數
char query[SIZE] = {0};
int ret = get_http_request(query);
if (ret < 0){
return -1;
}
//2.根據業務邏輯，得到需要的結果
float a, b;
sscanf(query, "a=%f&b=%f\n", &a, &b);
float result = a + b;
//3.將結果構造爲HTML，寫回到標準輸入中
printf("<html><head><meta charset = \"utf-8\"></head><body><h1>這兩個數的和爲：%f</h1><a href=\"http://39.106.164.95:9000/cal/index.html\">返回上一頁</a></body></html>", result);
return 0;
}
