HTTP协议URL解析的C语言实现

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/**

* 日期：2017年12月21日

* 作者：jack

* 原因：没有看到合适的解析URL代码，自己写一个。

* 应用：WIFI模块的Webserver

* 心情：可能不做嵌入式开发了，转向Java 的Hadoop

* 特点：不依赖很多东西，小巧稳定

#include <windows.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#define METHOD_DECODE(mode) mode?"POST":"GET"static char data[] ="GET /joyent/http-parser.txt HTTP/1.1\r\n""Host: github.com\r\n""DNT: 1\r\n""Accept-Encoding: gzip, deflate, sdch\r\n""Accept-Language: ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4\r\n""User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) ""AppleWebKit/537.36 (KHTML, like Gecko) ""Chrome/39.0.2171.65 Safari/537.36\r\n""Accept: text/html,application/xhtml+xml,application/xml;q=0.9,""image/webp,*/*;q=0.8\r\n""Connection: keep-alive\r\n""Transfer-Encoding: chunked\r\n""Cache-Control: max-age=0\r\n\r\nb\r\nhello world\r\n0\r\n\r\n";struct http_parser_urt{char filename[32];char method; /* 0:GET;1:POST */};char parse_url(struct http_parser_urt * httpurl, char * strurl){char ret = 0;char * line_start = NULL;char * line_end = NULL;char * start_temp = NULL;char * end_temp = NULL;char * line_temp = NULL;/* input check */if( (httpurl == NULL)||(strurl == NULL) ){ret = 1;return ret;}/* check http end flag */line_temp = (char *)strstr(strurl, "\r\n\r\n");if (line_temp == NULL){ret = 1;return ret;}/* ----------------------------------- first line ------------------------------*//* Determine the first and end addresses of a line */line_start = strurl;line_end = (char *)strstr(line_start, "\r\n");if (line_end == NULL){ret = 1;return ret;}/* find method name */if (strncmp(line_start, "GET ", 4) == 0){httpurl->method = 0;start_temp = line_start + 4;}else if (strncmp(strurl, "POST ", 5) == 0){httpurl->method = 1;start_temp = line_start + 5;}else{/* now do not suport method */}/* find file name */start_temp++;end_temp = (char *)strstr(line_start, " HTTP");strncpy_s(httpurl->filename, start_temp, end_temp-start_temp);return ret;}int main(int argc, char * argv[]){char ret1 = 0;struct http_parser_urt url_test1;ret1 = parse_url(&url_test1, data);if (ret1 != 0){printf("解析失败...\r\n");return 0;}printf("解析成功..\r\n");printf("方法名为:%s\r\n", METHOD_DECODE(url_test1.method));printf("文件名为:%s\r\n", url_test1.filename);system("pause");}

运行结果：

解析成功..
方法名为:GET
文件名为:joyent/http-parser.txt
请按任意键继续. . .

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