8.23 http server 项目

xinetd：负责http底层的传输

第一步:

在/etc/xinetd.d下创建  micro_httpd文件

sudo vim micro_httpd

service micro_httpd
{
    socket_type = stream
    protocol    = tcp
    wait        = no
    user        = liuwei
    server      = /home/liuwei/http_protect/micro_httpd
    server_args = /home/liuwei/www
    disable     = no
    flags       = IPv4
}

第二步：sudo  vim  /etc/services

在文件的最下面添加两句话

micro_httpd 8080/tcp

micro_httpd 8080/udp        #Micro HTTP  SERVER

第三步 ： 重启xinetd

sudo  /etc/init.d/xinetd restart

参考资料：

1.sudo aptitude install xinetd命令安装xinetd工具

2.sudo vi /etc/xinetd.d/micro_httpd创建micro_httpd文件并打开写入如下内容：

service micro_httpd

{

socket_type     = stream

protocol        = tcp

wait            = no

user            = whoami

server          = /home/whoami/http-project/micro_httpd

server_args     = /home/whoami/mh_html

disable         = no

flags           = IPv4

}

【特别注意】:文件名是micro_httpd而不是micro_httpd.conf

‘=’左边是tab，右边是一个空格

3.sudo vi /etc/services打开该文件，加入如下两行：

micro_httpd 2222/tcp #Micro HTTP server

micro_httpd 2222/udp #Micro HTTp server

4.sudo service xinetd restart重启xinetd

(以前是使用sudo /etc/init.d/xinetd restart, 是否互通待验证)

6.使用http://localhost:2222访问/home/whoami/mh_html下面的内容

项目实战：

改变工作目录  chdir

chdir("home/liuwei/demo");

然后可以fopen 创建

获取当前时间

获取文件属性

linux命令：stat   123.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>

void sys_err( char * str)
{
        printf( "%s\n" , str);
        exit(-1);
}
void show_dir(char * pathname , char * p)
{
        struct dirent * ptr;
        struct stat buf;
        DIR * dir = opendir(pathname);
        if( dir == NULL)
                sys_err("open dir error!");
        printf("<style>a{color:black;}.dir{color:red;font-size:25px;text-decoration:none}span{color:purple}td{width:25%%;text-align:left;}tr{height:35px}</style><table>");
        while( (ptr = readdir(dir)) != NULL )
        {
                if(ptr->d_name[0] == ‘.‘)
                        continue;

                char tmp[1024] , css[10] = "dir";
                strcpy(tmp , pathname);
                strcat(tmp , "/");
                strcat(tmp , ptr->d_name);
                stat(tmp, &buf);
                if(strcmp( p , "/") == 0)
                        p[0] = ‘\0‘;
                if(S_ISDIR(buf.st_mode) == 0)
                        css[0] = ‘\0‘;

                printf("<tr><td><a class=‘%s‘ href=‘%s/%s‘>%s</a></td><td>%s</td><td>%d</td></tr>",css,p,ptr->d_name,ptr->d_name,ctime(&buf.st_atime),(int)buf.st_size );
        }
        printf("</table><br/><hr/><span>apache_httpd</span>");
        fflush(stdout);
        exit(0);
}
void show_file( char * buf)
{
        FILE *fp;
        char * p = NULL , ch;
        char pathname[50] = "/home/liuwei/www";
        if((p = strtok( buf , " ")) && (p = strtok(NULL , " ")))
        {
                struct stat buf;
                if( strcmp( p , "/") == 0)
                        show_dir(pathname , p);

                strcat(pathname , p);
                stat(pathname, &buf);
                if(S_ISDIR(buf.st_mode))
                        show_dir(pathname , p);

                fp = fopen( pathname , "r");
                if(fp == NULL)
                        printf("404 not found\n");
                else
                {
                        //printf("HTTP/1.1 200 OK\r\n");
                        //printf("Content-Language:zh-ch\r\n");
                        //printf("Content-Type:text/html;charset=utf-8\r\n\r\n");
                        while(fread(&ch, sizeof(ch),1,fp) != 0 )
                                fwrite(&ch,sizeof(ch),1,stdout);
                }
        }
        fflush(stdout);
        fclose( fp );
}

void write_log( void )
{
        char buf[8192];
        time_t t ;
        int i = 1;
        FILE * fp = fopen("log.txt","a");
        if( fp == NULL )
                sys_err("fopen log.txt error");

        time(&t);
        fputs( ctime(&t) , fp);
        fputs( "-----------------------\n" , fp);

        while(( fgets(buf,sizeof(buf),stdin) != NULL ) && strlen(buf) != 2)
        {
                fputs( buf , fp );
                if(i++ == 1)
                        show_file( buf );
        }

        fprintf( fp , "\n");
        fclose( fp );
}
int main( int argc , char * argv[])
{
        if(chdir("/home/liuwei/http-project/"))
                sys_err("change dir error");
        write_log();
        return 0;
}

Makefile:

all:clean httpd
        @echo  "123456"
        sudo /etc/init.d/xinetd restart

httpd:
        gcc liuwei_httpd.c  -o liuwei_httpd

clean:
        rm -rf liuwei_httpd log.txt

来自为知笔记(Wiz)