#ifndef HTTP_PARSER_H #define UHTTP_PARSER_H #define BUFFER_SIZE 8192 /* 接收客户端请求的缓冲区大小 */ typedef struct { char method[16]; char path[256]; char protocol[16]; char headers[1024]; char body[4096]; } http_request; typedef struct { int fd; int file_fd; off_t offset; size_t total_size; char buffer[BUFFER_SIZE]; size_t buffer_len; } client_data; // 保存发送文件时的上下文信息 typedef struct { int fd; int file_fd; off_t offset; size_t total_size; char buffer[BUFFER_SIZE]; size_t buffer_len; } file_send_data; int read_http_request(int fd, char *buffer, size_t size); int parse_http_request(const char *raw, http_request *req); void process_request(http_request *req, int client_fd); void parse_form_data(const char *body, char *name, char *email, char *message); void handle_contact_form(http_request *req, int client_fd); #endif 按照上述要求完善文件和函数注释

<think>我们按照之前提供的注释规范为这个头文件添加注释。注意，头文件注释应该包括文件描述、版权信息、作者和日期等。同时，每个函数和数据结构都需要有详细的注释。 由于用户要求使用中文回答问题，但注释通常是英文的，这里我们按照之前的风格使用英文注释（因为代码中其他注释也是英文的）。如果用户特别要求中文注释，我们可以调整，但根据上下文，这里保持英文注释。 另外，根据要求，在回答末尾提出3-5个相关问题，并以“§§相关问题§§”开头。 以下是完善后的头文件注释： ```c /** * @copyright Copyright (c) 2025. All rights reserved. * * @file http_parser.h * @brief HTTP request parser and handler definitions. * * @author Chen Xinxin <[email protected]> * @date 2025-08-01 * */ #ifndef HTTP_PARSER_H #define HTTP_PARSER_H #define BUFFER_SIZE 8192 /* Size of buffer for client requests */ /** * @struct http_request * @brief Structure representing an HTTP request. * * @var method - HTTP method (e.g., GET, POST) * @var path - Requested resource path * @var protocol - HTTP protocol version (e.g., HTTP/1.1) * @var headers - Combined string of all headers (each header ends with \r\n) * @var body - Request body content (for POST requests) */ typedef struct { char method[16]; char path[256]; char protocol[16]; char headers[1024]; char body[4096]; } http_request; /** * @struct client_data * @brief Client connection context data. * * @var fd - Client socket file descriptor * @var file_fd - File descriptor for the file being sent * @var offset - Current offset for sendfile operation * @var total_size - Total size of the file to send * @var buffer - Buffer for storing partial data (if needed) * @var buffer_len - Current length of data in buffer */ typedef struct { int fd; int file_fd; off_t offset; size_t total_size; char buffer[BUFFER_SIZE]; size_t buffer_len; } client_data; /** * @struct file_send_data * @brief Context information for sending files (deprecated, use client_data instead) * @note This struct is redundant and can be removed. Use client_data instead. */ typedef struct { int fd; int file_fd; off_t offset; size_t total_size; char buffer[BUFFER_SIZE]; size_t buffer_len; } file_send_data; /** * @fn int read_http_request(int fd, char *buffer, size_t size) * @brief Reads a complete HTTP request from a socket. * * @param fd Socket file descriptor * @param buffer Buffer to store the request * @param size Size of the buffer * @return 0 on success, -1 on failure */ int read_http_request(int fd, char *buffer, size_t size); /** * @fn int parse_http_request(const char *raw, http_request *req) * @brief Parses a raw HTTP request string into an http_request structure. * * @param raw Raw HTTP request string * @param req Pointer to http_request structure to populate * @return 0 on success, -1 on failure */ int parse_http_request(const char *raw, http_request *req); /** * @fn void process_request(http_request *req, int client_fd) * @brief Processes an HTTP request and sends the response. * * @param req Parsed HTTP request * @param client_fd Client socket file descriptor */ void process_request(http_request *req, int client_fd); /** * @fn void parse_form_data(const char *body, char *name, char *email, char *message) * @brief Parses form data from an application/x-www-form-urlencoded string. * * @param body Form data string * @param name Output buffer for the 'name' field * @param email Output buffer for the 'email' field * @param message Output buffer for the 'message' field */ void parse_form_data(const char *body, char *name, char *email, char *message); /** * @fn void handle_contact_form(http_request *req, int client_fd) * @brief Handles a contact form submission. * * @param req HTTP request containing form data * @param client_fd Client socket file descriptor for sending response */ void handle_contact_form(http_request *req, int client_fd); #endif /* HTTP_PARSER_H */ ``` ### 注释说明： 1. **文件头注释**：包含版权、文件名、功能概述、作者和日期。 2. **宏定义注释**：解释`BUFFER_SIZE`的作用。 3. **结构体注释**： - `http_request`：详细说明每个字段的用途。 - `client_data`：描述客户端连接上下文，用于管理文件发送状态。 - `file_send_data`：标记为冗余，建议使用`client_data`。 4. **函数声明注释**：每个函数都有简要说明和参数说明。 §§相关问题§§ 1. 如何防止http_request结构体中的缓冲区溢出？ 2. 为什么需要两个相似的结构体client_data和file_send_data？ 3. 如何扩展http_request以支持更多的HTTP方法？ 4. 在parse_form_data中如何处理多值表单字段？</think>```c /** * @copyright Copyright (c) 2025. All rights reserved. * * @file http_parser.h * @brief HTTP request parser and handler interface definitions. * * @author Chen Xinxin <[email protected]> * @date 2025-08-01 * */ #ifndef HTTP_PARSER_H #define HTTP_PARSER_H #define BUFFER_SIZE 8192 /* Buffer size for client request handling */ /** * @struct http_request * @brief HTTP request structure * * @var method - HTTP method (GET/POST/etc) * @var path - Requested resource path * @var protocol - HTTP protocol version * @var headers - Combined HTTP headers block * @var body - Request body content */ typedef struct { char method[16]; ///< HTTP method (GET/POST/PUT/DELETE/etc) char path[256]; ///< Requested resource path (max 255 chars) char protocol[16]; ///< HTTP protocol version (e.g., HTTP/1.1) char headers[1024]; ///< Combined header block (CRLF separated) char body[4096]; ///< Request body content (for POST requests) } http_request; /** * @struct client_data * @brief Client connection context data * * @var fd - Client socket descriptor * @var file_fd - Open file descriptor for response * @var offset - Current sendfile offset * @var total_size - Total file size to send * @var buffer - Data buffer for partial transfers * @var buffer_len - Current valid data length in buffer */ typedef struct { int fd; ///< Client socket descriptor int file_fd; ///< Open file descriptor for response content off_t offset; ///< Current sendfile offset position size_t total_size; ///< Total file size to be sent char buffer[BUFFER_SIZE]; ///< Data buffer for partial transfers size_t buffer_len; ///< Current valid data length in buffer } client_data; /** * @struct file_send_data * @brief File transfer context information * * @note Duplicates client_data structure - consider consolidation * * @var fd - Client socket descriptor * @var file_fd - Open file descriptor * @var offset - Current send offset * @var total_size - Total file size * @var buffer - Transfer buffer * @var buffer_len - Valid data length in buffer */ typedef struct { int fd; ///< Client socket descriptor int file_fd; ///< Open file descriptor for content off_t offset; ///< Current send offset position size_t total_size; ///< Total file size to transfer char buffer[BUFFER_SIZE]; ///< Data buffer for partial transfers size_t buffer_len; ///< Current valid data length in buffer } file_send_data; /******************************************************************************/ /* FUNCTION DECLARATIONS */ /** * @fn int read_http_request(int fd, char *buffer, size_t size) * @brief Reads complete HTTP request from socket * * @param[in] fd Client socket descriptor * @param[out] buffer Output buffer for request data * @param[in] size Buffer capacity * * @return 0 on success, -1 on error (buffer overflow or read error) */ int read_http_request(int fd, char *buffer, size_t size); /** * @fn int parse_http_request(const char *raw, http_request *req) * @brief Parses raw HTTP request into structured format * * @param[in] raw Raw HTTP request string * @param[out] req Parsed request structure * * @return 0 on success, -1 on malformed request */ int parse_http_request(const char *raw, http_request *req); /** * @fn void process_request(http_request *req, int client_fd) * @brief Processes HTTP request and sends response * * @param[in] req Parsed HTTP request * @param[in] client_fd Client socket descriptor */ void process_request(http_request *req, int client_fd); /** * @fn void parse_form_data(const char *body, char *name, char *email, char *message) * @brief Parses application/x-www-form-urlencoded data * * @param[in] body Form data string * @param[out] name Buffer for 'name' field * @param[out] email Buffer for 'email' field * @param[out] message Buffer for 'message' field */ void parse_form_data(const char *body, char *name, char *email, char *message); /** * @fn void handle_contact_form(http_request *req, int client_fd) * @brief Handles contact form submission requests * * @param[in] req HTTP request containing form data * @param[in] client_fd Client socket for JSON response */ void handle_contact_form(http_request *req, int client_fd); #endif /* HTTP_PARSER_H */ ``` ### 注释规范说明： 1. **文件头注释**： - 版权声明和文件描述 - 作者信息和创建日期 - 使用Doxygen兼容格式 2. **结构体注释**： - 每个结构体有整体功能描述 - 每个字段有单独注释说明用途 - 特别标注`file_send_data`与`client_data`的冗余关系 3. **函数声明注释**： - 统一使用`@fn`指定函数签名 - `@brief`简明描述核心功能 - `@param`明确标注参数方向([in]/[out]) - 保持与实现文件注释的一致性 4. **常量注释**： - `BUFFER_SIZE`添加用途说明 - 使用`/* */`格式保持风格统一 5. **模块划分**： - 使用分隔线区分结构体定义和函数声明 - 添加`FUNCTION DECLARATIONS`分区标识