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Copy pathwebthreadpool.c
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391 lines (356 loc) · 14.3 KB
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <time.h>
#include <sys/mman.h>
#include <semaphore.h>
#include <sys/stat.h>
#include <signal.h>
#include <pthread.h>
#include "threadpool.h"
// #include "thpool.h"
#define VERSION 23
#define BUFSIZE 8096
#define ERROR 42
#define LOG 44
#define FORBIDDEN 403
#define NOTFOUND 404
#define TIMELOG 444
#define CHANGELINE 555
#define BEGIN 111
#define SEM_NAME "sem_example"
#define SHM_NAME "mmap_example"
#ifndef SIGCLD
# define SIGCLD SIGCHLD
#endif
char timecal[BUFSIZE];
double time_readsocket;
double time_writesocket;
double time_readweb;
double time_writelog;
struct {
char *ext;
char *filetype;
} extensions [] = {
{"gif", "image/gif" },
{"jpg", "image/jpg" },
{"jpeg","image/jpeg"},
{"png", "image/png" },
{"ico", "image/ico" },
{"zip", "image/zip" },
{"gz", "image/gz" },
{"tar", "image/tar" },
{"htm", "text/html" },
{"html","text/html" },
{0,0}
};
typedef struct{
int hit;
int fd;
}webparam;
unsigned long get_file_size(const char *path)
{
unsigned long filesize = -1;
struct stat statbuff;
if (stat(path, &statbuff) < 0)
{
return filesize;
}
else
{
filesize = statbuff.st_size;
}
return filesize;
}
void timegetter(char *timebuffer)
{
time_t timep;
struct tm *p;
time (&timep);
p = gmtime(&timep);
(void)sprintf(timebuffer,"Date: %d.%d.%d\nTime: %d:%d:%d\n",1900+p->tm_year,1+p->tm_mon,p->tm_mday,8+p->tm_hour,p->tm_min,p->tm_sec);
}
void logger(int type, char *s1, char *s2, int socket_fd)
{
int fd ;
char timebuffer[BUFSIZE];
char logbuffer[BUFSIZE*2];
switch (type) {
case ERROR:
(void)sprintf(logbuffer,"ERROR: %s:%s Errno=%d exiting pid=%d",s1, s2, errno,getpid());
break;
case FORBIDDEN:
(void)write(socket_fd, "HTTP/1.1 403 Forbidden\nContent-Length: 185\nConnection: close\nContent-Type: text/html\n\n<html><head>\n<title>403 Forbidden</title>\n</head><body>\n<h1>Forbidden</h1>\nThe requested URL, file type or operation is not allowed on this simple static file webserver.\n</body></html>\n",271);
(void)sprintf(logbuffer,"FORBIDDEN: %s:%s",s1, s2);
break;
case NOTFOUND:
(void)write(socket_fd, "HTTP/1.1 404 Not Found\nContent-Length: 136\nConnection: close\nContent-Type: text/html\n\n<html><head>\n<title>404 Not Found</title>\n</head><body>\n<h1>Not Found</h1>\nThe requested URL was not found on this server.\n</body></html>\n",224);
(void)sprintf(logbuffer,"NOT FOUND: %s:%s",s1, s2);
break;
case LOG:
(void)sprintf(logbuffer,"INFO: %s:%s:%d",s1, s2,socket_fd);
break;
case TIMELOG:
(void)sprintf(logbuffer,"The cost of %s is %s ms",s1, s2);
break;
case CHANGELINE:
(void)sprintf(logbuffer,"\n");
break;
case BEGIN:
timegetter(timebuffer);
break;
}
/* No checks here, nothing can be done with a failure anyway */
if((fd = open("webserver.log", O_CREAT| O_WRONLY | O_APPEND,0644)) >= 0) {
if (type == BEGIN)
(void)write(fd,timebuffer,strlen(timebuffer));
else
(void)write(fd,logbuffer,strlen(logbuffer));
(void)write(fd,"\n",1);
(void)close(fd);
}
// if(type == ERROR || type == NOTFOUND || type == FORBIDDEN) exit(3);
}
/* this is a child web server process, so we can exit on errors */
void web(void *data)
{
int fd, hit;
struct timeval t1, t2;
double timeslide;
int j, file_fd, buflen;
long i, ret, len;
char * fstr;
char buffer[BUFSIZE+1]; /* can't be static */
memset(buffer, 0, BUFSIZE+1);
webparam *param = (webparam*)data;
fd = param->fd;
hit = param->hit;
// FILE *timefile;
// char *timefilename = "time_file.txt";
double time_temp_readsocket = 0;
double time_temp_wirtesocket = 0;
double time_temp_readweb = 0;
double time_temp_writelog = 0;
logger(BEGIN,"","",fd);
gettimeofday(&t1, NULL);
ret = read(fd,buffer,BUFSIZE); /* read Web request in one go */
gettimeofday(&t2, NULL);
timeslide = (t2.tv_sec - t1.tv_sec) * 1000.0 + (t2.tv_usec - t1.tv_usec) / 1000.0;
time_temp_readsocket = timeslide;
// timefile = fopen(timefilename, "a");
// fprintf(timefile, "the cost of read socket is : %f\n", timeslide);
// fclose(timefile);
if(ret == 0 || ret == -1) { /* read failure stop now */
logger(FORBIDDEN,"failed to read browser request","",fd);
}else{
if(ret > 0 && ret < BUFSIZE) /* return code is valid chars */
buffer[ret]=0; /* terminate the buffer */
else buffer[0]=0;
for(i=0;i<ret;i++) /* remove CF and LF characters */
if(buffer[i] == '\r' || buffer[i] == '\n')
buffer[i]='*';
logger(LOG,"request",buffer,hit);
if( strncmp(buffer,"GET ",4) && strncmp(buffer,"get ",4) ) {
logger(FORBIDDEN,"Only simple GET operation supported",buffer,fd);
}
for(i=4;i<BUFSIZE;i++) { /* null terminate after the second space to ignore extra stuff */
if(buffer[i] == ' ') { /* string is "GET URL " +lots of other stuff */
buffer[i] = 0;
break;
}
}
for(j=0;j<i-1;j++) /* check for illegal parent directory use .. */
if(buffer[j] == '.' && buffer[j+1] == '.') {
logger(FORBIDDEN,"Parent directory (..) path names not supported",buffer,fd);
}
if( !strncmp(&buffer[0],"GET /\0",6) || !strncmp(&buffer[0],"get /\0",6) ) /* convert no filename to index file */
(void)strcpy(buffer,"GET /index.html");
/* work out the file type and check we support it */
buflen = strlen(buffer);
fstr = (char *)0;
for(i=0;extensions[i].ext != 0;i++) {
len = strlen(extensions[i].ext);
if( !strncmp(&buffer[buflen-len], extensions[i].ext, len)) {
fstr = extensions[i].filetype;
break;
}
}
if(fstr == 0) logger(FORBIDDEN,"file extension type not supported",buffer,fd);
if((file_fd = open(&buffer[5],O_RDONLY)) == -1) { /* open the file for reading */
logger(NOTFOUND, "failed to open file",&buffer[5],fd);
}
logger(LOG,"SEND",&buffer[5],hit);
len = (long)lseek(file_fd, (off_t)0, SEEK_END); /* lseek to the file end to find the length */
(void)lseek(file_fd, (off_t)0, SEEK_SET); /* lseek back to the file start ready for reading */
(void)sprintf(buffer,"HTTP/1.1 200 OK\nServer: nweb/%d.0\nContent-Length: %ld\nConnection: close\nContent-Type: %s\n\n", VERSION, len, fstr); /* Header + a blank line */
// it have to be two '\n' !!!
logger(LOG,"Header",buffer,hit);
gettimeofday(&t1, NULL);
(void)write(fd,buffer,strlen(buffer));
gettimeofday(&t2, NULL);
timeslide = (t2.tv_sec - t1.tv_sec) * 1000.0 + (t2.tv_usec - t1.tv_usec) / 1000.0;
time_temp_wirtesocket = timeslide;
// timefile = fopen(timefilename, "a");
// fprintf(timefile, "the cost of wirte socket is : %f\n", timeslide);
// fclose(timefile);
/* send file in 8KB block - last block may be smaller */
while (1)
{
gettimeofday(&t1, NULL);
ret = read(file_fd, buffer, BUFSIZE);
gettimeofday(&t2, NULL);
timeslide = (t2.tv_sec - t1.tv_sec) * 1000.0 + (t2.tv_usec - t1.tv_usec) / 1000.0;
time_temp_readweb += timeslide;
// timefile = fopen(timefilename, "a");
// fprintf(timefile, "the cost of read webfile is : %f\n", timeslide);
// fclose(timefile);
if (ret > 0)
{
gettimeofday(&t1, NULL);
(void)write(fd,buffer,ret);
gettimeofday(&t2, NULL);
timeslide = (t2.tv_sec - t1.tv_sec) * 1000.0 + (t2.tv_usec - t1.tv_usec) / 1000.0;
time_temp_wirtesocket += timeslide;
// timefile = fopen(timefilename, "a");
// fprintf(timefile, "the cost of wirte socket is : %f\n", timeslide);
// fclose(timefile);
}
else
{
break;
}
}
// while ((ret = read(file_fd, buffer, BUFSIZE)) > 0 ) {
// (void)write(fd,buffer,ret);
// }
logger(CHANGELINE,"","",0);
time_readsocket += time_temp_readsocket;
time_writesocket += time_temp_wirtesocket;
time_readweb += time_temp_readweb;
time_writelog += time_temp_writelog;
// sleep(1); /* allow socket to drain before signalling the socket is closed */
usleep(10000); /* allow socket to drain before signalling the socket is closed */
close(file_fd);
}
close(fd);
free(param);
// exit(1);/* with it will byte count wrong */
}
int main(int argc, char **argv)
{
struct timeval t1, t2;
double timeslide;
gettimeofday(&t1, NULL);
int i, port, listenfd, socketfd, hit;
socklen_t length;
// FILE *timefile;
// char *timefilename = "timefile.txt";
// pid_t pid;
static struct sockaddr_in cli_addr; /* static = initialised to zeros */
static struct sockaddr_in serv_addr; /* static = initialised to zeros */
time_readsocket = 0;
time_writesocket = 0;
time_readweb = 0;
time_writelog = 0;
if( argc < 3 || argc > 3 || !strcmp(argv[1], "-?") ) {
(void)printf("hint: nweb Port-Number Top-Directory\t\tversion %d\n\n"
"\tnweb is a small and very safe mini web server\n"
"\tnweb only servers out file/web pages with extensions named below\n"
"\t and only from the named directory or its sub-directories.\n"
"\tThere is no fancy features = safe and secure.\n\n"
"\tExample: nweb 8181 /home/nwebdir &\n\n"
"\tOnly Supports:", VERSION);
for(i=0;extensions[i].ext != 0;i++)
(void)printf(" %s",extensions[i].ext);
(void)printf("\n\tNot Supported: URLs including \"..\", Java, Javascript, CGI\n"
"\tNot Supported: directories / /etc /bin /lib /tmp /usr /dev /sbin \n"
"\tNo warranty given or implied\n\tNigel Griffiths nag@uk.ibm.com\n" );
exit(0);
}
if( !strncmp(argv[2],"/" ,2 ) || !strncmp(argv[2],"/etc", 5 ) ||
!strncmp(argv[2],"/bin",5 ) || !strncmp(argv[2],"/lib", 5 ) ||
!strncmp(argv[2],"/tmp",5 ) || !strncmp(argv[2],"/usr", 5 ) ||
!strncmp(argv[2],"/dev",5 ) || !strncmp(argv[2],"/sbin",6) ){
(void)printf("ERROR: Bad top directory %s, see nweb -?\n",argv[2]);
exit(3);
}
if(chdir(argv[2]) == -1){
(void)printf("ERROR: Can't Change to directory %s\n",argv[2]);
exit(4);
}
/* Become deamon + unstopable and no zombies children (= no wait()) */
if(fork() != 0)
return 0; /* parent returns OK to shell */
(void)signal(SIGCLD, SIG_IGN); /* ignore child death */
(void)signal(SIGHUP, SIG_IGN); /* ignore terminal hangups */
for(i=0;i<32;i++)
(void)close(i); /* close open files */
(void)setpgrp(); /* break away from process group */
logger(LOG,"nweb starting",argv[1],getpid());
/* setup the network socket */
if((listenfd = socket(AF_INET, SOCK_STREAM,0)) < 0)
logger(ERROR, "system call","socket",0);
port = atoi(argv[1]);
if(port < 0 || port >60000)
logger(ERROR,"Invalid port number (try 1->60000)",argv[1],0);
/* Initialise pthread */
// pthread_attr_t attr;
// pthread_attr_init(&attr);
// pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
// pthread_t pth;
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_addr.sin_port = htons(port);
if(bind(listenfd, (struct sockaddr *)&serv_addr,sizeof(serv_addr)) < 0)
logger(ERROR,"system call","bind",0);
if(listen(listenfd,64) < 0)
logger(ERROR,"system call","listen",0);
gettimeofday(&t2, NULL);
timeslide = (t2.tv_sec - t1.tv_sec) * 1000.0 + (t2.tv_usec - t1.tv_usec) / 1000.0;
(void)sprintf(timecal,"%f",timeslide);
logger(TIMELOG,"Preparation",timecal,0);
int num_thread = 30;
threadpool* pool = initThreadPool(num_thread);
// thpool_* thpool = thpool_init(num_thread);
for(hit=1;;hit++) {
length = sizeof(cli_addr);
if((socketfd = accept(listenfd, (struct sockaddr *)&cli_addr, &length)) < 0)
logger(ERROR,"system call","accept",0);
else{
webparam *param = malloc(sizeof(webparam));
param->hit = hit;
param->fd = socketfd;
// if (pthread_create(&pth, &attr, &web, (void*)param) < 0)
// {
// logger(ERROR, "system call", "pthread_create", 0);
// }
// task* curtask = (task *)malloc(sizeof(task));
// curtask->function = web;
// curtask->arg = (void*)param;
// curtask->next = NULL;
// thpool_add_work(thpool, (void*)web, (void*)param);
addTask2ThreadPool(pool, (void*)web, (void*)param);
// timefile = fopen(timefilename, "a");
// fprintf(timefile, "average cost of read socket is : %f\n", time_readsocket / hit);
// fprintf(timefile, "average cost of wirte socket is : %f\n", time_writesocket / hit);
// fprintf(timefile, "average cost of read web is : %f\n", time_readweb / hit);
// fprintf(timefile, "average cost of write log is : %f\n", time_writelog / hit);
// fprintf(timefile, "cost of read socket is : %f\n", time_readsocket);
// fprintf(timefile, "cost of wirte socket is : %f\n", time_writesocket);
// fprintf(timefile, "cost of read web is : %f\n", time_readweb);
// fprintf(timefile, "cost of write log is : %f\n", time_writelog);
// fprintf(timefile, "\n");
// fclose(timefile);
}
}
return 0;
}