web cgi

Makefile

@@ -0,0 +1,15 @@
+CC = gcc
+CFLAGS = -Wall -O2
+LDFLAGS = -lcjson
+
+all: json_service
+
+json_service: json_service.c
+	$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
+
+install: json_service
+	sudo cp json_service /usr/lib/cgi-bin/
+	sudo chmod +x /usr/lib/cgi-bin/json_service
+
+clean:
+	rm -f json_service

_configure_thttpd.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# 创建thttpd配置文件
+sudo tee /etc/thttpd.conf << EOF
+port 8080
+user www-data
+logfile /var/log/thttpd.log
+pidfile /var/run/thttpd.pid
+chroot /
+docroot /var/www
+cgipat /cgi-bin/*
+EOF
+
+# 创建必要的目录
+sudo mkdir -p /var/www/cgi-bin
+sudo chown -R www-data:www-data /var/www
+
+# 重启thttpd服务
+sudo systemctl restart thttpd
+
+echo "thttpd configured and restarted. Service running on port 8080"

json_server.c

@@ -0,0 +1,103 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <cjson/cJSON.h>
+
+// 读取HTTP POST数据
+char* read_post_data() {
+    char* content_length_str = getenv("CONTENT_LENGTH");
+    if (!content_length_str) {
+        return NULL;
+    }
+
+    int content_length = atoi(content_length_str);
+    if (content_length <= 0) {
+        return NULL;
+    }
+
+    char* data = (char*)malloc(content_length + 1);
+    if (!data) {
+        return NULL;
+    }
+
+    fread(data, 1, content_length, stdin);
+    data[content_length] = '\0';
+    
+    return data;
+}
+
+// 处理JSON请求并生成响应
+cJSON* process_request(cJSON* request) {
+    cJSON* response = cJSON_CreateObject();
+    
+    // 检查请求是否包含"action"字段
+    cJSON* action = cJSON_GetObjectItemCaseSensitive(request, "action");
+    if (cJSON_IsString(action) && (action->valuestring != NULL)) {
+        cJSON_AddStringToObject(response, "received_action", action->valuestring);
+        
+        // 根据不同的action执行不同的操作
+        if (strcmp(action->valuestring, "echo") == 0) {
+            cJSON* message = cJSON_GetObjectItemCaseSensitive(request, "message");
+            if (cJSON_IsString(message) && (message->valuestring != NULL)) {
+                cJSON_AddStringToObject(response, "message", message->valuestring);
+                cJSON_AddStringToObject(response, "status", "success");
+            } else {
+                cJSON_AddStringToObject(response, "error", "Missing or invalid 'message' field");
+                cJSON_AddStringToObject(response, "status", "error");
+            }
+        } else if (strcmp(action->valuestring, "ping") == 0) {
+            cJSON_AddStringToObject(response, "message", "pong");
+            cJSON_AddStringToObject(response, "status", "success");
+        } else {
+            cJSON_AddStringToObject(response, "error", "Unknown action");
+            cJSON_AddStringToObject(response, "status", "error");
+        }
+    } else {
+        cJSON_AddStringToObject(response, "error", "Missing or invalid 'action' field");
+        cJSON_AddStringToObject(response, "status", "error");
+    }
+    
+    return response;
+}
+
+int main() {
+    // 设置HTTP响应头，指定JSON格式
+    printf("Content-Type: application/json\n\n");
+
+    // 读取POST数据
+    char* post_data = read_post_data();
+    if (!post_data) {
+        cJSON* error = cJSON_CreateObject();
+        cJSON_AddStringToObject(error, "error", "No data received");
+        cJSON_AddStringToObject(error, "status", "error");
+        printf("%s", cJSON_Print(error));
+        cJSON_Delete(error);
+        free(post_data);
+        return 0;
+    }
+
+    // 解析JSON
+    cJSON* request = cJSON_Parse(post_data);
+    free(post_data);
+    
+    if (!request) {
+        const char* error_ptr = cJSON_GetErrorPtr();
+        cJSON* error = cJSON_CreateObject();
+        cJSON_AddStringToObject(error, "error", "Invalid JSON");
+        cJSON_AddStringToObject(error, "details", error_ptr ? error_ptr : "Unknown error");
+        cJSON_AddStringToObject(error, "status", "error");
+        printf("%s", cJSON_Print(error));
+        cJSON_Delete(error);
+        return 0;
+    }
+
+    // 处理请求并生成响应
+    cJSON* response = process_request(request);
+    cJSON_Delete(request);
+
+    // 输出响应
+    printf("%s", cJSON_Print(response));
+    cJSON_Delete(response);
+
+    return 0;
+}