Rockingcool/chat_application
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added check for whether the destination user exists

Browse Source
This commit is contained in:
Aadhavan Srinivasan
2023-04-13 10:28:16 -05:00
parent 97d1c9153b
commit 868aaccf28
1 changed files with 11 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
main.c
View File

@@ -20,6 +20,8 @@
User** create_user_list(char* filename); User** create_user_list(char* filename);
void sigint_handler(int dummy); void sigint_handler(int dummy);
User* fetch_user(char* username); User* fetch_user(char* username);
int user_to_index(User* user);
bool user_equals(User* this, User* other);
User** users; User** users;
int num_users; int num_users;
@@ -120,10 +122,17 @@ int main() {
} }
printf("Your message is: %s\n",message_string); printf("Your message is: %s\n",message_string);
Message message = new_message(message_string,from_user[i],to_user[i]);
if (user_to_index(to_user[i]) < 0) {
printf("Recipient user does not exist!\n");
return -20;
}
Message* message = new_message(message_string,from_user[i],to_user[i]);
stack_push( message_stack[user_to_index(to_user[i])],message ); stack_push( message_stack[user_to_index(to_user[i])],message );
printf("Message has been pushed onto stack for %s\n",to_user[i]->username);
close(conn_sockets[i]); close(conn_sockets[i]);
@@ -205,7 +214,7 @@ User* fetch_user(char* username) {
} }
int user_to_index(User* user) { int user_to_index(User* user) {
int index = 0; int index = -1;
for (int i=0;i < num_users; i++) { for (int i=0;i < num_users; i++) {
if (user_equals(users[i],user) == true) { if (user_equals(users[i],user) == true) {
index = i; index = i;