From 5dda478c5106b6c1ad05bd9937fea1092bccf2c3 Mon Sep 17 00:00:00 2001
From: Anqi Chen <a.chen49@student.unimelb.edu.au>
Date: Mon, 29 Apr 2019 15:12:35 +1000
Subject: [PATCH] change the logic
---
h.c | 117 ++++++++++++++++++++++++++----------------------------------
1 file changed, 51 insertions(+), 66 deletions(-)
diff --git a/h.c b/h.c
index b63c4c6..73d2f73 100644
--- a/h.c
+++ b/h.c
@@ -1,5 +1,5 @@
/*
-** code by Angela Chan
+** http-server.c
*/
#include <errno.h>
@@ -41,7 +41,7 @@ static char const * const HTTP_404 = "HTTP/1.1 404 Not Found\r\nContent-Length:
static int const HTTP_404_LENGTH = 45;
-// 3 kind of methods
+
typedef enum
{
GET,
@@ -80,13 +80,15 @@ struct User* newUser() {
}
void clear_user_keyword(struct User* user){
+ user->stage=0;
+ user->isOnline=0;
+ user->n_word=0;
for (int i = 0; i < MAX_BUFF; i++)
{
user->keywords[i] = NULL;
}
}
-// abstract the cookie from http response in buff
int find_cookie(char* buff)
{
char* cookie_id=strstr(buff, "cookie_id=");
@@ -98,7 +100,7 @@ int find_cookie(char* buff)
else
{
temp = malloc(sizeof(char)*strlen(cookie_id)+1);
- strncpy(temp, cookie_id, strlen(cookie_id));
+ strcpy(temp, cookie_id);
temp+=10;
}
printf("find_cookie in buff %s\n", cookie_id);
@@ -110,7 +112,7 @@ int find_cookie(char* buff)
return atoi(temp);
}
-//find the current user
+
struct User* find_curr(struct User* user_arr[], char* buff)
{
int cookie_id = find_cookie(buff);
@@ -135,18 +137,17 @@ struct User* find_curr(struct User* user_arr[], char* buff)
printf(" func curr: cookie_id is %d\n%d\n\n\n", cookie_id,curr_user->userID);
}
- for (int i=0; i<2; i++) {
- if (user_arr[i]->userID == cookie_id)
- {
+ for (int i=0; i<2; i++) {
+ if (user_arr[i]->userID == cookie_id)
+ {
printf("existing curr user %d , with cookie_id %d", i,cookie_id);
- return user_arr[i];
-
- }
- }
+ return user_arr[i];
+
+ }
+ }
}
-// get the other user
struct User* the_other_user(struct User* curr_user, struct User* user_arr[]){
for(int i=0; i<2; i++){
if (user_arr[i]!=curr_user){
@@ -155,7 +156,17 @@ struct User* the_other_user(struct User* curr_user, struct User* user_arr[]){
}
}
-// simply load the original html
+
+bool match(char* w1, char** w2, int n_word){
+ for (int i=0; i<n_word; i++){
+ if (w2[i]==w1){
+ return true;
+ }
+ }
+ return false;
+}
+
+
void simple_load_html(char* html, int sockfd, char* buff, int n, struct User* curr_user){
struct stat st;
stat(html, &st);
@@ -180,19 +191,19 @@ void simple_load_html(char* html, int sockfd, char* buff, int n, struct User* cu
close(filefd);
}
-// plug in the new words in new buff to the old buff
+ /* adds the new word in the html (between the <body> */
void plug_in_html(char* newword, char* old_buffer, char* new_buffer){
- // split buff according to </body>
+ // slice the html string into 2 parts
char start[MAX_BUFF];
char* end = strstr(old_buffer, "</body>");
- // copy and close up
+ // front part
strncpy(start, old_buffer, strlen(old_buffer)-strlen(end));
start[strlen(start)] = '\0';
- // merge the buffs
- strncpy(new_buffer, start, strlen(start));
+ // combine
+ strcpy(new_buffer, start);
strcat(new_buffer, newword);
strcat(new_buffer, end);
@@ -200,7 +211,7 @@ void plug_in_html(char* newword, char* old_buffer, char* new_buffer){
}
-// if the html is rearranged, load it with the new content
+
void edit_load_html(char* html, int sockfd, char* buff, char* newword,struct User* curr_user){
// get the size of the file
@@ -240,29 +251,17 @@ void edit_load_html(char* html, int sockfd, char* buff, char* newword,struct Use
free(new_buffer);
}
-
-// read the new guess word into the user keyword array
void record_keyword(struct User* curr_user, char *new_guess){
for (int i=0; i<=curr_user->n_word; i++){
if(curr_user->keywords[curr_user->n_word]==NULL){
curr_user->keywords[curr_user->n_word] = malloc((1 + strlen(new_guess)) * sizeof(char*));
- strncpy(curr_user->keywords[curr_user->n_word],new_guess, strlen(new_guess));
+ strcpy(curr_user->keywords[curr_user->n_word],new_guess);
curr_user->n_word++;
break;
}
}
}
-// find if word is in array, knowing the length of the array
-bool match(char* w1, char* w2[], int n_word){
- for (int i=0; i<n_word; i++){
- if (w2[i]==w1){
- return true;
- }
- }
- return false;
-}
-
static bool handle_http_request(int sockfd, struct User* user_arr[])
{
// try to read the request
@@ -303,33 +302,32 @@ static bool handle_http_request(int sockfd, struct User* user_arr[])
printf("buff1: \n");
printf("%s\n",buff);
- // get current user
struct User* curr_user=find_curr(user_arr,buff);
// sanitise the URI
while (*curr == '.' || *curr == '/')
++curr;
+
+ printf("stage%d\n",curr_user->stage );
// assume the only valid request URI is "/" but it can be modified to accept more files
if (*curr == ' ' || *curr == '?')
//Stage1: when user name is not registed
if (curr_user->stage==0){
- // the only GET method before registing name is the intro page
if (method==GET)
{
printf("curr_user->username%s == %d\n", curr_user->username,curr_user->username==NULL);
simple_load_html("1_intro.html",sockfd,buff,n,curr_user);
}
- // the only POST method before registing name is the start page
-
+
else if (method == POST)
{
printf("curr_user->username%s == %d\n", curr_user->username,curr_user->username==NULL);
// locate the username, it is safe to do so in this sample code, but usually the result is expected to be
- // copied to another buffer using strncpy or strncpy to ensure that it will not be overwritten.
+ // copied to another buffer using strcpy or strncpy to ensure that it will not be overwritten.
char * user = strstr(buff, "user=") + 5;
char username[MAX_BUFF];
- strncpy(username, "<br>",strlen("<br>"));
+ strcpy(username, "<br>");
strcat(username, user);
username[strlen(username)] = '\0';
edit_load_html("2_start.html", sockfd,buff,username,curr_user);
@@ -347,65 +345,55 @@ static bool handle_http_request(int sockfd, struct User* user_arr[])
if(strstr(buff, "quit=Quit") != NULL)
{ curr_user->isOnline=0;
simple_load_html("7_gameover.html",sockfd,buff,n,curr_user);
+ curr_user->stage=3;
}
// start is the only GET mathod for ther stage 1
else if (method == GET)
{ curr_user->isOnline=1;
simple_load_html("3_first_turn.html",sockfd,buff,n,curr_user);
- curr_user->stage=2;
+ curr_user->stage =2;
+ curr_user->isOnline=1;
}
-
-
}
// Stage 2: in the process of guessing
else if (curr_user->stage ==2){
- // ready to guess
+
char * new_guess = strstr(buff, "keyword=") + 8;
- // if quit, offline and quit
- // clear all user info
if(strstr(buff, "quit=Quit") != NULL)
{ curr_user->isOnline=0;
simple_load_html("7_gameover.html",sockfd,buff,n,curr_user);
clear_user_keyword(curr_user);
+ }
+ else if (the_other_user(curr_user, user_arr)->stage==3){
+ simple_load_html("7_gameover.html",sockfd,buff,n,curr_user);
+ clear_user_keyword(curr_user);
}
- // other user offline, discard
- if (the_other_user(curr_user, user_arr)->isOnline==0){
+ else if(the_other_user(curr_user, user_arr)->isOnline==0){
simple_load_html("5_discarded.html",sockfd,buff,n,curr_user);
clear_user_keyword(curr_user);
}
- // GET method can only do start in stage2
- // clear the user keyword array
- if (method = GET) {
- clear_user_keyword(curr_user);
- simple_load_html("3_first_turn.html",sockfd,buff,n,curr_user);
- }
- // two players guess match
- if (new_guess != NULL)
- {
- //if match game end
- if (match(new_guess, the_other_user(curr_user, user_arr)->keywords, the_other_user(curr_user, user_arr)->n_word))
- {
+ else if(new_guess!=NULL){
+ if(match(new_guess, the_other_user(curr_user, user_arr)->keywords, the_other_user(curr_user, user_arr)->n_word))
+ {
simple_load_html("6_endgame.html",sockfd,buff,n,curr_user);
clear_user_keyword(curr_user);
}
- // if a new guess is take, not match, add it to array and display it
- else
- {
+ else{
curr_user->stage =2;
printf("curr_user->n_word%d\n",curr_user->n_word );
// remember new guess
record_keyword(curr_user, new_guess);
// display new guess
char guess[MAX_BUFF];
- strncpy(guess,"<br>",strlen("<br>"));
+ strcpy(guess,"<br>");
if (curr_user->n_word==1){
strcat(guess, new_guess);
guess[strlen(new_guess)]='\0';
@@ -421,11 +409,8 @@ static bool handle_http_request(int sockfd, struct User* user_arr[])
edit_load_html("4_accepted.html", sockfd,buff,guess,curr_user);
}
}
-
-
-
}
else
--
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