diff options
Diffstat (limited to 'plugins/samples/tic-tac-toe.c')
| -rw-r--r-- | plugins/samples/tic-tac-toe.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/plugins/samples/tic-tac-toe.c b/plugins/samples/tic-tac-toe.c index bcf3fa90..a1630c50 100644 --- a/plugins/samples/tic-tac-toe.c +++ b/plugins/samples/tic-tac-toe.c @@ -305,7 +305,7 @@ static void changed(struct board *board, const char *reason) /* * retrieves the board of the request */ -static struct board *board_of_req(struct afb_req req) +static inline struct board *board_of_req(struct afb_req req) { return afb_req_context(req, (void*)get_new_board, (void*)release_board); } @@ -440,7 +440,7 @@ static void level(struct afb_req req) */ static void join(struct afb_req req) { - struct board *board; + struct board *board, *new_board; const char *id; /* retrieves the context for the session */ @@ -448,23 +448,34 @@ static void join(struct afb_req req) INFO(afbitf, "method 'join' called for boardid %d", board->id); /* retrieves the parameters */ - board = board_of_req(req); id = afb_req_value(req, "boardid"); if (id == NULL) goto bad_request; - /* check validity of parameters */ + /* none is a special id for joining a new session */ if (strcmp(id, "none") == 0) { - board = get_new_board(); + new_board = get_new_board(); goto success; } - board = search_board(atoi(id)); - if (board == NULL) + + /* searchs the board to join */ + new_board = search_board(atoi(id)); + if (new_board == NULL) goto bad_request; - board->use_count++; + /* + * joining its board is stupid but possible + * however when called with the same stored pointer + * afb_req_context_set will not call the release + * function 'release_board'. So the use_count MUST not + * be incremented. + */ + if (new_board != board) + new_board->use_count++; + success: - afb_req_context_set(req, board, (void*)release_board); + /* set the new board (and leaves the previous one) */ + afb_req_context_set(req, new_board, (void*)release_board); /* replies */ afb_req_success(req, NULL, NULL); @@ -579,7 +590,7 @@ static const struct AFB_verb_desc_v1 verbs[] = { { .name= "move", .session= AFB_SESSION_NONE, .callback= move, .info= "Tells the client move" }, { .name= "board", .session= AFB_SESSION_NONE, .callback= board, .info= "Get the current board" }, { .name= "level", .session= AFB_SESSION_NONE, .callback= level, .info= "Set the server level" }, - { .name= "join", .session= AFB_SESSION_NONE, .callback= join, .info= "Join a board" }, + { .name= "join", .session= AFB_SESSION_CHECK,.callback= join, .info= "Join a board" }, { .name= "undo", .session= AFB_SESSION_NONE, .callback= undo, .info= "Undo the last move" }, { .name= "wait", .session= AFB_SESSION_NONE, .callback= wait, .info= "Wait for a change" }, /* marker for end of the array */ |