0000

2026-07-18 16:39:01 +08:00
parent 25f7ef1967
commit ce5e55a2c1
24 changed files with 5015 additions and 2 deletions
--- a/server-exp4/cgi-bin/add
+++ b/server-exp4/cgi-bin/add
--- a/server-exp4/cgi-bin/add.c
+++ b/server-exp4/cgi-bin/add.c
@@ -0,0 +1,63 @@
+/*
+ * cgi-bin/add.c — 简单CGI加法计算器
+ *
+ * 用于测试Web服务器的CGI功能
+ * GET: /cgi-bin/add?a=10&b=20
+ * POST: 提交表单到 /cgi-bin/add
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+int main(void)
+{
+    char *query = getenv("QUERY_STRING");
+    char *method = getenv("REQUEST_METHOD");
+
+    printf("Content-Type: text/html; charset=UTF-8\r\n\r\n");
+    printf("<!DOCTYPE html>\n<html><head>\n");
+    printf("<meta charset=\"UTF-8\">\n");
+    printf("<title>CGI Calculator</title>\n");
+    printf("<style>body{font-family:Arial;margin:40px;}"
+           "h1{color:#2a7;}.result{background:#f5f5f5;padding:20px;"
+           "border-radius:10px;font-size:1.5em;text-align:center;}"
+           "a{color:#667eea;}</style>\n");
+    printf("</head><body>\n");
+    printf("<h1>🔧 CGI 动态计算器 (实验4)</h1>\n");
+
+    /* 从 stdin 读取 POST 数据 */
+    char post_data[1024] = "";
+    if (method && strcmp(method, "POST") == 0) {
+        char *len_str = getenv("CONTENT_LENGTH");
+        if (len_str) {
+            int len = atoi(len_str);
+            if (len > 0 && len < (int)sizeof(post_data) - 1) {
+                fread(post_data, 1, len, stdin);
+                post_data[len] = '\0';
+            }
+        }
+        query = post_data;
+    }
+
+    /* 解析参数 a 和 b */
+    int a = 0, b = 0;
+    if (query) {
+        char *pa = strstr(query, "a=");
+        char *pb = strstr(query, "b=");
+        if (pa) a = atoi(pa + 2);
+        if (pb) b = atoi(pb + 2);
+    }
+
+    printf("<div class=\"result\">\n");
+    printf("<p>%d + %d = <strong>%d</strong></p>\n", a, b, a + b);
+    printf("<p>Method: %s | PID: %d</p>\n",
+           method ? method : "UNKNOWN", getpid());
+    printf("</div>\n");
+
+    printf("<p><a href=\"/\">← 返回首页</a></p>\n");
+    printf("<hr><em>Experiment4 CGI v1.0</em>\n");
+    printf("</body></html>\n");
+
+    return 0;
+}