C语言实现Http server请求网页

/* * pub.c * * Created on: 2015-4-16 * Author: hsc */ #include<stdio.h> #include<stdlib.h> #include<pthread.h> #include<unistd.h> #include<errno.h> #include<string.h> #include <sys/types.h> #include <sys/socket.h> #include<arpa/inet.h> #include"pub.h" #include"thread_work.h" void setdaemon() //设置为守护进程 { pid_t pid, sid; pid = fork(); if (pid < 0) { printf("fork failed %s\n", strerror(errno)); exit (EXIT_FAILURE); } if (pid > 0) { exit (EXIT_SUCCESS); } if ((sid = setsid()) < 0) { printf("setsid failed %s\n", strerror(errno)); exit (EXIT_FAILURE); } /* if (chdir("/") < 0) { printf("chdir failed %s\n", strerror(errno)); exit(EXIT_FAILURE); }*/ umask(0); close(STDIN_FILENO); close(STDOUT_FILENO); close(STDERR_FILENO); } const char *get_filetype(const char *filename) //根据扩展名返回文件类型描述 { ////////////得到文件扩展名/////////////////// char sExt[32]; char *p_start=filename; memset(sExt, 0, sizeof(sExt)); while(*p_start) { if (*p_start == '.') { p_start++; strncpy(sExt, p_start, sizeof(sExt)); break; } p_start++; } ////////根据扩展名返回相应描述/////////////////// if (strncmp(sExt, "bmp", 3) == 0) return "image/bmp"; if (strncmp(sExt, "gif", 3) == 0) return "image/gif"; if (strncmp(sExt, "ico", 3) == 0) return "image/x-icon"; if (strncmp(sExt, "jpg", 3) == 0) return "image/jpeg"; if (strncmp(sExt, "avi", 3) == 0) return "video/avi"; if (strncmp(sExt, "css", 3) == 0) return "text/css"; if (strncmp(sExt, "dll", 3) == 0) return "application/x-msdownload"; if (strncmp(sExt, "exe", 3) == 0) return "application/x-msdownload"; if (strncmp(sExt, "dtd", 3) == 0) return "text/xml"; if (strncmp(sExt, "mp3", 3) == 0) return "audio/mp3"; if (strncmp(sExt, "mpg", 3) == 0) return "video/mpg"; if (strncmp(sExt, "png", 3) == 0) return "image/png"; if (strncmp(sExt, "ppt", 3) == 0) return "application/vnd.ms-powerpoint"; if (strncmp(sExt, "xls", 3) == 0) return "application/vnd.ms-excel"; if (strncmp(sExt, "doc", 3) == 0) return "application/msword"; if (strncmp(sExt, "mp4", 3) == 0) return "video/mpeg4"; if (strncmp(sExt, "ppt", 3) == 0) return "application/x-ppt"; if (strncmp(sExt, "wma", 3) == 0) return "audio/x-ms-wma"; if (strncmp(sExt, "wmv", 3) == 0) return "video/x-ms-wmv"; return "text/html"; } int socket_create(int port) { int st = socket(AF_INET, SOCK_STREAM, 0); int on =1; if (st == -1) { printf("%s,%d:socker error %s\n", __FILE__, __LINE__, strerror(errno)); return 0; } if (setsockopt(st, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) == -1) { printf("setsockopt failed %s\n", strerror(errno)); return 0; } struct sockaddr_in sockaddr; memset(&sockaddr, 0, sizeof(sockaddr)); sockaddr.sin_port = htons(port); //指定一个端口号并将hosts字节型传化成Inet型字节型（大端或或者小端问题） sockaddr.sin_family = AF_INET; //设置结构类型为TCP/IP sockaddr.sin_addr.s_addr = htonl(INADDR_ANY); //服务端是等待别人来连，不需要找谁的ip //这里写一个长量INADDR_ANY表示server上所有ip，这个一个server可能有多个ip地址，因为可能有多块网卡 if (bind(st, (struct sockaddr *) &sockaddr, sizeof(sockaddr)) == -1) { printf("%s,%d:bind error %s \n", __FILE__, __LINE__, strerror(errno)); return 0; } if (listen(st, 100) == -1) // 服务端开始监听 { printf("%s,%d:listen failture %s\n", __FILE__, __LINE__, strerror(errno)); return 0; } printf("start server success!\n"); return st; } int socket_accept(int st) { int client_st; struct sockaddr_in client_sockaddr; socklen_t len = sizeof(client_sockaddr); pthread_t thrd_t; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setdetachstate(&attr,PTHREAD_CREATE_DETACHED); //初始化线程为可分离的 memset(&client_sockaddr, 0, sizeof(client_sockaddr)); while (1) { client_st = accept(st, (struct sockaddr *) &client_sockaddr, &len); if (client_st == -1) { printf("%s,%d:accept failture %s \n", __FILE__, __LINE__, strerror(errno)); return 0; } else { int *tmp = (int *) malloc(sizeof(int)); *tmp = client_st; pthread_create(&thrd_t, &attr, http_thread, tmp); } } pthread_destory(&attr);//释放资源 } int get_file_content(const char *file_name, char **content) // 得到文件内容 { int file_length = 0; FILE *fp = NULL; if (file_name == NULL) { return file_length; } fp = fopen(file_name, "rb"); if (fp == NULL) { printf("%s,%d:open file failture %s \n", __FILE__, __LINE__, strerror(errno)); return file_length; } fseek(fp, 0, SEEK_END); file_length = ftell(fp); rewind(fp); *content = (char *) malloc(file_length); if (*content == NULL) { printf("%s,%d:malloc failture %s \n", __FILE__, __LINE__, strerror(errno)); return 0; } fread(*content, file_length, 1, fp); fclose(fp); return file_length; }