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电梯直达

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发表于 2009-04-17 15:15 |只看该作者 |倒序浏览

问题：为什么我使用守护进程，列表目录不是当前目录？
注销initDaemon函数，一切都正常了，请教大家是怎么回事？万分感谢

#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <netdb.h>
#include <sys/utsname.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#define MAXCLIENT 50
#define SERVERPORT 80
#define DEFAULTHTML index.html
extern int pthreadAction(char * request, int cfd);
extern int isDir(char *filepath);
extern void header();
extern int openFile(char *path,int cfd);
int main(int argc,char *agrv[]) {
int serverfd,clientfd;
FILE * cfp;
char request[BUFSIZ];
pid_t pid;
//initDaemon();
serverfd = initSocket(SERVERPORT);
while (1) {
clientfd = accept(serverfd,NULL,NULL);
if ((pid =fork()) < 0) {
die("fork");
}
if (pid == 0){
close(serverfd);
cfp = fdopen(clientfd,"r");
fgets(request,BUFSIZ,cfp);
pthreadAction(request,clientfd);
fclose(cfp);
close(clientfd);
_exit(0);
}else {
if(waitpid(pid,NULL,0)!= pid){
die("wait");
}
close(clientfd);
}
}
close(serverfd);
}
int pthreadAction(char * request, int cfd) {
char cmd[BUFSIZ],filepath[BUFSIZ];
strcpy(filepath,".");
if((sscanf(request,"%s%s",cmd,(filepath+1))) != 2) {
// exit;
}
printf("request:%s",request);
printf("cmd:%s\n",cmd);
printf("filepath:%s\n",filepath);
if (strcmp(cmd,"GET") != 0){
return;
}
if ((isDir(filepath)) == 0) {
if ((listDir(filepath,cfd)) == -1) {
die("listdir");
}
}else{
if ((openFile(filepath,cfd)) != 0){
die("openFile");
}
}
}
int openFile(char * path,int cfd) {
FILE * cfp;
cfp = fdopen(cfd,"w");
header(cfp,"text/html;charset=utf-8");
fprintf(cfp,"<html><title>我爱你，WEBSERVER。</title><body><br><p>我是谁？？</p></body></html>");
fprintf(cfp,"<a href=\"\">test</a>");
fclose(cfp);
return 0;
}
void choiceType(char * filepath) {
}
int isDir(char *filepath) {
struct stat info;
if (stat(filepath,&info)!=-1 && S_ISDIR(info.st_mode)) {
return 0;
}else{
return -1;
}
}
int listDir(char *path,int cfd) {
FILE * cfp;
cfp=fdopen(cfd,"w");
header(cfp,"text/plain;charset=utf-8");
fflush(cfp);
dup2(cfd,1);
dup2(cfd,2);
if (execlp("ls","ls","-l",NULL,NULL) == -1) {
die("execlp");
return -1;
}
fclose(cfp);
return 0;
}
void header(FILE *cfp,char * type) {
fprintf(cfp,"HTTP/1.0 200 OK\r\n");
fprintf(cfp,"Content-type: %s\r\n",type);
fprintf(cfp,"\r\n");
}
void error404() {
}
// install daemon service
int initDaemon(void) {
pid_t pid;
int i;
if ((pid = fork()) < 0) {
die("System fork");
}
if (pid != 0) {
_exit(0);
}
if ((setsid()) == -1){
die("setsid");
}
if ((pid = fork()) < 0) {
die("System fork");
}
if (pid != 0) {
_exit(0);
}
if ((chdir("/tmp")) == -1) {
die("chdir");
}
for (i =0; i < 3; i++ ){
close(i);
}
if ((umask(0)) == -1){
die("umask");
}
return 0;
}
// End initdaemon
// init Socket service
int initSocket(int ServerPort) {
int serverfd;
struct sockaddr_in serveraddr;
int sockopt = 1;
memset(&serveraddr,0,sizeof(serveraddr));
serveraddr.sin_family = AF_INET;
serveraddr.sin_port = htons(ServerPort);
serveraddr.sin_addr.s_addr = INADDR_ANY;
if ((serverfd = socket(AF_INET,SOCK_STREAM,0)) == -1) {
die("socket");
}
setsockopt(serverfd,SOL_SOCKET,SO_REUSEADDR, &sockopt, sizeof(sockopt));
if ((bind(serverfd,(struct sockaddr * )&serveraddr,sizeof(serveraddr))) == -1) {
die("bind");
}
if ((listen(serverfd,MAXCLIENT)) == -1) {
die("listen");
}
return serverfd;
}
// system die & return
int die(const char * msg) {
perror(msg);
exit(1);
}