/* 原创文章 转载请附上原链接: https://www.cnblogs.com/jiujue/p/10707153.html */
自己实现的如有缺漏欢迎提出
直接代码 一切皆在代码中
首先是 主函数文件 和 头文件
头文件：
1 #ifndef _HEAD_H_ 2 #define _HEAD_H_ 3 4 #include<stdio.h> 5 #include<string.h> 6 #include<stdlib.h> 7 #include<time.h> 8 #include<math.h> 9 #include <fcntl.h> 10 #include <ctype.h> 11 #include <dirent.h> 12 #include <unistd.h> 13 #include <event2/event.h> 14 #include <event2/listener.h> 15 #include <event2/bufferevent.h> 16 #include <sys/socket.h> 17 #include <sys/types.h> 18 #include <sys/stat.h> 19 #include <arpa/inet.h> 20 21 int judge_type_dir_or_nondir(const char* name); 22 int send_dir_asheml(struct bufferevent *bufev, char *dirname, void *arg); 23 struct evconnlistener* libev_start(struct event_base*base, const char* Ip,int Port); 24 int send_html_head(struct bufferevent* bufev, int stat_no, const char* stat_desc, char* type); 25 const char *get_file_type(const char *name); 26 int send_file(struct bufferevent *bufev,char* file); 27 28 #endifView Code
主函数文件：
1 // File Name: main.c
2 // Author: jiujue
3 // Created Time: 2019年04月05日 星期五 19时54分48秒
4
5 #include "head.h"
6
7 int main(int argc, const char* argv[])
8 {
9 if(argc < 4)
10 {
11 printf("argument not enough\neg:./app Ip Port sourceDir\n");
12 exit(1);
13 }
14
15
16 int ret = chdir(argv[3]);
17 if(-1 == ret)
18 {
19 perror("chdir error");
20 exit(1);
21 }
22 else
23 {
24 printf("chdir successful,to -> %s\n",argv[3]);
25 }
26
27 struct event_base* base = event_base_new();
28
29 struct evconnlistener* listen = libev_start(base,argv[1],atoi(argv[2]));
30
31 event_base_dispatch(base);
32
33 evconnlistener_free(listen);
34 event_base_free(base);
35
36 return 0 ;
37 }
View Code
接下来是 调用libevent框架了 （重头戏来了 注意回调的设置哦）：
1 // File Name: _libev.c
2 // Author: jiujue
3 // Created Time: 2019年04月05日 星期五 19时54分08秒
4 #include "head.h"
5 #define PATH_OF_404_ "404.html"
6
7 void read_cb(struct bufferevent* bufev, void* arg)
8 {
9 printf("<<<<<<<<<<<<<<<<<<<<<<<<<<<,,Happen read_cb\n");
10 char buf[1024] = {0}, method[12] = {0}, path[1024] = {0}, protocol[12] = {0};
11 bufferevent_read(bufev,buf,sizeof(buf));
12 //printf("-----------------------recv http request :%s\n",buf);
13 sscanf(buf,"%s %s %s",method,path,protocol);
14 char *file = path+1;
15 if(0 == (strcmp(path,"/") ) )
16 {
17 file = (char*)"./";
18 }
19
20 int isFile = judge_type_dir_or_nondir(file);
21 printf("fffffffff is %d \n",isFile);
22 if(0 == isFile)
23 {//is palin file
24 printf("send file <name>>%s\n",file);
25 send_file(bufev,file);
26 }
27 if(isFile == 1){//is dir
28 printf("send dir <name>>%s\n",file);
29 send_html_head(bufev,200,"OK",(char*)"text/html");
30 send_dir_asheml(bufev,file,NULL);
31 }
32 else if(-1 == isFile)
33 {//is not found file or directory
34 printf("send 404 <name>>%s\n",file);
35 send_file(bufev,PATH_OF_404_);
36 }
37
38 }
39
40 void write_cb(struct bufferevent* bufev, void* arg)
41 {
42 struct sockaddr_in *cli = (struct sockaddr_in*)arg;
43 char buf[1024] = {0};
44 printf("Sent respond to cli,Ip ->%s and Port ->%d\n",
45 inet_ntop(AF_INET,&(cli->sin_addr.s_addr), buf,sizeof(buf)),
46 ntohs(cli->sin_port) );
47 }
48
49 void event_cb(struct bufferevent* bufev, short ev, void* arg)
50 {
51 printf("event_cb successful\n");
52 if(ev & BEV_EVENT_EOF)
53 {
54 struct sockaddr_in *cli = (struct sockaddr_in*)arg;
55 char buf[1024] = {0};
56 printf("Have client disconnect, Ip ->%s and Port ->%d\n",
57 inet_ntop(AF_INET,&(cli->sin_addr.s_addr), buf,sizeof(buf)),
58 ntohs(cli->sin_port) );
59
60 }
61 if(ev & BEV_EVENT_ERROR )
62 {
63 printf("******************************** Happy Error******************************\n");
64 }
65 bufferevent_free(bufev);
66 }
67
68 void listener_cb(struct evconnlistener *listener,
69 evutil_socket_t fd, struct sockaddr* cli,
70 int cli_len, void* arg)
71 {
72
73 printf("<<<<<<<<<<<<<<<<<<<<,,,,,,,,, listener_cb successful\n");
74 struct event_base* base = (struct event_base*)arg;
75
76 struct bufferevent* bufev = bufferevent_socket_new(base, fd, BEV_OPT_CLOSE_ON_FREE);
77 bufferevent_setcb(bufev, read_cb, write_cb, event_cb,cli);
78 bufferevent_enable(bufev,EV_READ);
79
80 }
81
82
83 struct evconnlistener* libev_start(struct event_base*base, const char* Ip,int Port)
84 {
85
86 struct sockaddr_in ser;
87 ser.sin_family = AF_INET;
88 ser.sin_port = htons(Port);
89 inet_pton(AF_INET,Ip,&(ser.sin_addr.s_addr));
90
91 struct evconnlistener* ret = evconnlistener_new_bind(base, listener_cb, base,
92 LEV_OPT_REUSEABLE | LEV_OPT_CLOSE_ON_FREE, 128,
93 (struct sockaddr *)&ser, sizeof(ser));
94
95 if(ret == NULL)
96 {
97 return NULL;
98 }
99
100 return ret;
101 }
View Code
然后是 发送文件和目录的回调“
文件的：
1 #include "head.h"
2
3 int send_file(struct bufferevent *bufev,char* file)
4 {
5
6
7 int ffd = open(file,O_RDONLY);
8 if(-1 == ffd)
9 {
10 printf("sourceFilePath : %s\n",file);
11 perror("open sourceFile error");
12
13 }
14
15 char file_read_buf[1024];
16 int read_len = 0;
17
18 char * type = get_file_type(file);
19
20
21 send_html_head(bufev,200, "OK", type);
22
23 while((read_len=read(ffd, file_read_buf,sizeof(file_read_buf))) > 0)
24 {
25 if(0 == read_len)
26 {
27 break;
28 }
29 bufferevent_write(bufev,file_read_buf,read_len);;
30 file_read_buf[strlen(file_read_buf)+1] = '\n';
31 printf("send message :%s\n",file_read_buf);
32 memset(file_read_buf,0,sizeof(file_read_buf));
33 }
34
35 printf("close ...\n");
36 close(ffd);
37 return 0;
38 }
View Code
目录的（这里拼接网页的时候要细心 非常细心的那种 ）：
1 // File Name: _send_dir.c
2 // Author: jiujue
3 // Created Time: 2019年04月05日 星期五 19时27分18秒
4
5 #include "head.h"
6 #define MAXFORGTML_ 4096
7
8
9 int send_dir_asheml(struct bufferevent *bufev, char *dirname, void* arg)
10 {
11 printf("******************send_dir name is %s\n",dirname);
12
13 char* buf_dir_html = (char *)malloc(MAXFORGTML_);
14 struct dirent **ptr;
15 int dir_total_num = scandir(dirname,&ptr,NULL,alphasort);
16
17 //html head
18 sprintf(buf_dir_html,"<!doctype HTML>\
19 <html>\
20 <head>\
21 <title>Curent dir:%s</title>\
22 </head>\
23 <body>\
24 <h1>Curretn Dir Content:%s </h1>\
25 <table>\
26 <tr>\
27 <td>Name</td><td>Size</td><td>Type</td>\
28 </tr>",dirname,dirname);
29 bufferevent_write(bufev,buf_dir_html,strlen(buf_dir_html));
30
31 for(int i=0;i<dir_total_num;++i)
32 {
33 char buf_current_name[1024] = {0};
34 if( 0 == strcmp(dirname,"./"))
35 {
36 sprintf(buf_current_name,"%s%s",dirname,ptr[i]->d_name);
37 }
38 else
39 {
40 sprintf(buf_current_name,"%s/%s",dirname,ptr[i]->d_name);
41 }
42 printf("++++++++++++++++++++send cur dir <name>>%s\n",buf_current_name);
43 struct stat st;
44 memset(&st,0,sizeof(st));
45 stat(buf_current_name,&st);
46
47 sprintf(buf_dir_html,
48 "<tr>\
49 <td><a href=\"%s\">%s</a></td>\
50 <td>%ld</td>\
51 <td>%s</td>\
52 </tr>",
53 buf_current_name,
54 ptr[i]->d_name,st.st_size,
55 judge_type_dir_or_nondir(buf_current_name)!= 0?"dir":"plain file");
56 bufferevent_write(bufev,buf_dir_html,strlen(buf_dir_html));
57 memset((char*)buf_dir_html,0,sizeof(buf_dir_html));
58 }
59
60 //html end
61 sprintf(buf_dir_html,
62 "</table>\
63 </body>\
64 </html>");
65 bufferevent_write(bufev,buf_dir_html,strlen(buf_dir_html));
66 bufferevent_write(bufev,"\r\n",2);
67
68 free(buf_dir_html);
69 return 0;
70 }
View Code
最后就是一些小函数了： 判断文件类型 和是否为目录：
判断文件类型（这里如果出问题 打开图片等时会出现问题）：
1 // File Name: _get_file_type.c
2 // Author: jiujue
3 // Created Time: 2019年04月06日 星期六 19时14分07秒
4
5
6 #include "head.h"
7
8 const char *get_file_type(const char *name)
9 {
10 char* dot;
11
12
13 dot = strrchr(name, '.');
14 if (dot == NULL)
15 return "text/plain; charset=utf-8";
16 if (strcmp(dot, ".html") == 0 || strcmp(dot, ".htm") == 0)
17 return "text/html; charset=utf-8";
18 if (strcmp(dot, ".jpg") == 0 || strcmp(dot, ".jpeg") == 0)
19 return "image/jpeg";
20 if (strcmp(dot, ".gif") == 0)
21 return "image/gif";
22 if (strcmp(dot, ".png") == 0)
23 return "image/png";
24 if (strcmp(dot, ".css") == 0)
25 return "text/css";
26 if (strcmp(dot, ".au") == 0)
27 return "audio/basic";
28 if (strcmp( dot, ".wav" ) == 0)
29 return "audio/wav";
30 if (strcmp(dot, ".avi") == 0)
31 return "video/x-msvideo";
32 if (strcmp(dot, ".mov") == 0 || strcmp(dot, ".qt") == 0)
33 return "video/quicktime";
34 if (strcmp(dot, ".mpeg") == 0 || strcmp(dot, ".mpe") == 0)
35 return "video/mpeg";
36 if (strcmp(dot, ".vrml") == 0 || strcmp(dot, ".wrl") == 0)
37 return "model/vrml";
38 if (strcmp(dot, ".midi") == 0 || strcmp(dot, ".mid") == 0)
39 return "audio/midi";
40 if (strcmp(dot, ".mp3") == 0)
41 return "audio/mpeg";
42 if (strcmp(dot, ".ogg") == 0)
43 return "application/ogg";
44 if (strcmp(dot, ".pac") == 0)
45 return "application/x-ns-proxy-autoconfig";
46
47 return "text/plain; charset=utf-8";
48 }
View Code
判断是否为目录：
1 // File Name: _judge_type.c
2 // Author: jiujue
3 // Created Time: 2019年04月05日 星期五 20时54分34秒
4
5 #include "head.h"
6
7 int judge_type_dir_or_nondir(const char* name)
8 {
9 struct stat st;
10 int ret = stat(name,&st);
11 if(-1 == ret)
12 {
13 return -1;
14 }
15 if(S_ISREG(st.st_mode))
16 {
17 return 0;
18 }
19 if(S_ISDIR(st.st_mode))
20 {
21 return 1;
22 }
23 else
24 {
25 return 2;
26 }
27
28 }
29
30
31 #if 0
32 int main(int argc,char* argv[])
33 {
34 int ret = judge_type_dir_or_nondir(argv[1]);
35 if(ret == 1)
36 {
37 printf("is dir ");
38 }
39 if(ret == 0)
40 {
41 printf("is file");
42 }
43 return 0;
44 }
45 #endif
View Code
注：以上代码已测验，基本没有问题（bug 肯定有 欢迎提出）
结语：有问题欢迎提在下方 ，本人在校学生，时间较为充裕， 有时间会回复的。
/* 原创文章 转载请附上原链接: https://www.cnblogs.com/jiujue/p/10707153.html */