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Commit a2e1a557 authored by Xiaoxuan Li's avatar Xiaoxuan Li
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final update before due

parent 1f9ea375
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with 187 additions and 16 deletions
image_tagger.c
+ 187
− 16
View file @ a2e1a557
......@@ -25,6 +25,18 @@ static int const HTTP_400_LENGTH = 47;
static char const * const HTTP_404 = "HTTP/1.1 404 Not Found\r\nContent-Length: 0\r\n\r\n";
static int const HTTP_404_LENGTH = 45;
int player1;
int player2;
bool player1_ready;
bool player2_ready;
char player1_k[2005][205];
char player2_k[2005][205];
int player1_knum;
int player2_knum;
// represents the types of method
typedef enum
{
......@@ -33,11 +45,12 @@ typedef enum
UNKNOWN
} METHOD;
static bool handle_http_request(int sockfd, int player)
static bool handle_http_request(int sockfd)
{
// try to read the request
char buff[2049];
int n = read(sockfd, buff, 2049);
//fwrite(buff,1,2049,stdout);
if (n <= 0)
{
if (n < 0)
......@@ -46,6 +59,12 @@ static bool handle_http_request(int sockfd, int player)
printf("socket %d close the connection\n", sockfd);
return false;
}
if( player1 <0 && player2 != sockfd){
player1 = sockfd;
}
if( player2 <0 && player1 != sockfd){
player2 = sockfd;
}
// terminate the string
buff[n] = 0;
......@@ -82,6 +101,7 @@ static bool handle_http_request(int sockfd, int player)
if (strncmp(curr, "?start", 6) == 0){
if (method == GET)
{
// get the size of the file
struct stat st;
stat("3_first_turn.html", &st);
......@@ -112,7 +132,14 @@ if (strncmp(curr, "?start", 6) == 0){
char * quit = strstr(buff, "quit=");
char * guess = strstr(buff, "guess=");
if (quit) {
player -=1;
bool player1_ready = false;
bool player2_ready = false;
int player1 = -1;
int player2 = -1;
int player1_knum = 0;
int player2_knum = 0;
// get the size of the file
struct stat st;
stat("7_gameover.html", &st);
......@@ -140,9 +167,21 @@ if (strncmp(curr, "?start", 6) == 0){
}
if(guess){
// get the size of the file
if(player < 2){
if(player1_ready&&player2_ready){
char * keyword = strstr(buff, "keyword=") + 8;
int keyword_length = strlen(keyword);
if(player1 == sockfd){
strncpy(player1_k[player1_knum], keyword, keyword_length);
player1_knum += 1;
int flag =0;
for(int i=0; i<=player2_knum;i++){
if(strcmp(keyword,player2_k[i])==0){
flag = 1;
}
}
if(flag){
struct stat st;
stat("5_discarded.html", &st);
stat("6_endgame.html", &st);
n = sprintf(buff, HTTP_200_FORMAT, st.st_size);
// send the header first
if (write(sockfd, buff, n) < 0)
......@@ -151,7 +190,32 @@ if (strncmp(curr, "?start", 6) == 0){
return false;
}
// send the file
int filefd = open("5_discarded.html", O_RDONLY);
int filefd = open("6_endgame.html", O_RDONLY);
do
{
n = sendfile(sockfd, filefd, NULL, 2048);
}
while (n > 0);
if (n < 0)
{
perror("sendfile");
close(filefd);
return false;
}
close(filefd);
}
else{
struct stat st;
stat("4_accepted.html", &st);
n = sprintf(buff, HTTP_200_FORMAT, st.st_size);
// send the header first
if (write(sockfd, buff, n) < 0)
{
perror("write");
return false;
}
// send the file
int filefd = open("4_accepted.html", O_RDONLY);
do
{
n = sendfile(sockfd, filefd, NULL, 2048);
......@@ -167,18 +231,110 @@ if (strncmp(curr, "?start", 6) == 0){
}
}
if(player2 == sockfd){
strncpy(player2_k[player2_knum], keyword, keyword_length);
player2_knum += 1;
int flag =0;
for(int i=0; i<=player1_knum;i++){
if(strcmp(keyword,player1_k[i])==0){
flag = 1;
}
}
if(flag){
struct stat st;
stat("6_endgame.html", &st);
n = sprintf(buff, HTTP_200_FORMAT, st.st_size);
// send the header first
if (write(sockfd, buff, n) < 0)
{
perror("write");
return false;
}
// send the file
int filefd = open("6_endgame.html", O_RDONLY);
do
{
n = sendfile(sockfd, filefd, NULL, 2048);
}
while (n > 0);
if (n < 0)
{
perror("sendfile");
close(filefd);
return false;
}
close(filefd);
}
else{
struct stat st;
stat("4_accepted.html", &st);
n = sprintf(buff, HTTP_200_FORMAT, st.st_size);
// send the header first
if (write(sockfd, buff, n) < 0)
{
perror("write");
return false;
}
// send the file
int filefd = open("4_accepted.html", O_RDONLY);
do
{
n = sendfile(sockfd, filefd, NULL, 2048);
}
while (n > 0);
if (n < 0)
{
perror("sendfile");
close(filefd);
return false;
}
close(filefd);
}
}
}
else{
struct stat st;
stat("5_discarded.html", &st);
n = sprintf(buff, HTTP_200_FORMAT, st.st_size);
// send the header first
if (write(sockfd, buff, n) < 0)
{
perror("write");
return false;
}
// send the file
int filefd = open("5_discarded.html", O_RDONLY);
do
{
n = sendfile(sockfd, filefd, NULL, 2048);
}
while (n > 0);
if (n < 0)
{
perror("sendfile");
close(filefd);
return false;
}
close(filefd);
}
}
}
}
if (*curr == ' '){
if (method == GET)
{
if (method == GET){
if(player1 == sockfd){
player1_ready = true;
}
if(player2 == sockfd){
player2_ready = true;
}
// get the size of the file
struct stat st;
stat("1_intro.html", &st);
......@@ -212,7 +368,14 @@ if (strncmp(curr, "?start", 6) == 0){
char * quit = strstr(buff, "quit=");
if (quit) {
player -=1;
bool player1_ready = false;
bool player2_ready = false;
int player1 = -1;
int player2 = -1;
int player1_knum = 0;
int player2_knum = 0;
// get the size of the file
struct stat st;
stat("7_gameover.html", &st);
......@@ -269,7 +432,7 @@ if (strncmp(curr, "?start", 6) == 0){
close(filefd);
//move the trailing part backward
int p1, p2;
for (p1 = size - 1, p2 = p1 - username_length; p1 >= size - 17; --p1, --p2)
for (p1 = size - 1, p2 = p1 - username_length; p1 >= size - 212; --p1, --p2)
buff[p1] = buff[p2];
++p2;
......@@ -306,13 +469,23 @@ if (strncmp(curr, "?start", 6) == 0){
int main(int argc, char * argv[])
{
player1_ready = false;
player2_ready = false;
player1 = -1;
player2 = -1;
player1_knum = 0;
player2_knum = 0;
int player = 0;
if (argc < 3)
{
fprintf(stderr, "usage: %s ip port\n", argv[0]);
return 0;
}
else if(argc == 3) {
fprintf(stderr, "image_tagger server is now running at IP: %s on port %s\n",
argv[1], argv[2]);}
// create TCP socket which only accept IPv4
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
......@@ -365,7 +538,6 @@ int main(int argc, char * argv[])
exit(EXIT_FAILURE);
}
int player = 0;
// loop all possible descriptor
for (int i = 0; i <= maxfd; ++i){
// determine if the current file descriptor is active
......@@ -396,11 +568,10 @@ int main(int argc, char * argv[])
);
}
player += 1;
}
// a request is sent from the client
else if (!handle_http_request(i, player))
else if (!handle_http_request(i))
{
close(i);
......
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