From: Christian Heller Date: Sat, 6 Dec 2014 02:42:57 +0000 (+0100) Subject: Server: Restructure io_loop(), and make obey_msg() handle meta commands. X-Git-Tag: tce~575 X-Git-Url: https://plomlompom.com/repos/%7B%7B%20web_path%20%7D%7D/static/%7B%7Bdb.prefix%7D%7D/day_todos?a=commitdiff_plain;h=81630285494cf6d9e5ddd845e4e55702d87029b0;p=plomrogue Server: Restructure io_loop(), and make obey_msg() handle meta commands. --- diff --git a/src/server/init.c b/src/server/init.c index c0935a5..1b36490 100644 --- a/src/server/init.c +++ b/src/server/init.c @@ -71,7 +71,7 @@ static void obey_lines_from_file(char * path, uint8_t record) { *nl = '\0'; } - obey_msg(line, record, 1); + obey_msg(line, record); } err_line_inc(); } @@ -91,18 +91,18 @@ static void replay_game() while ( world.turn < world.replay && try_fgets(line, linemax + 1, file, __func__)) { - obey_msg(line, 0, 1); + obey_msg(line, 0); err_line_inc(); } uint8_t end = 0; - while (!io_loop()) + while (3 == io_loop(2)) { if (!end) { end = (NULL == try_fgets(line, linemax + 1, file, __func__)); if (!end) { - obey_msg(line, 0, 1); + obey_msg(line, 0); err_line_inc(); } } @@ -256,10 +256,10 @@ extern void run_game() char * msg = try_malloc(strlen(command) + 1 + 11 + 1, __func__); int test = sprintf(msg, "%s %d", command, (int) time(NULL)); exit_trouble(test < 0, __func__, s[S_FCN_SPRINTF]); - obey_msg(msg, 1, 1); + obey_msg(msg, 1); free(msg); } err_line_zero(); - io_loop(); + io_loop(1); record(NULL, 1); } diff --git a/src/server/run.c b/src/server/run.c index 5537631..a1bf343 100644 --- a/src/server/run.c +++ b/src/server/run.c @@ -42,19 +42,21 @@ static uint8_t set_char_by_string_comparison(char * string, char * comparand, /* Return 1 on world.exists, else 0 and err_line() appropriate error message. */ static uint8_t player_commands_allowed(); -/* Parse player command "tok0" with no argument to player action. */ +/* Parse player commands "tok0" with optional argument "tok1" to player action. + * Return 1 on success, 0 on failure. + */ static uint8_t parse_player_command_0arg(char * tok0); - -/* Parse player command "tok0" with one argument "tok1" to player action. */ static uint8_t parse_player_command_1arg(char * tok0, char * tok1); -/* Parse/apply command "tok0" (read further tokens as necessary). */ -static uint8_t parse_command(char * tok0); +/* Parse/apply (non-)meta command "tok0" (read further tokens as necessary). + * Return 0 on failure, 1 on success, 2 on QUIT meta command. + */ +static uint8_t parse_command_nonmeta(char * tok0); +static uint8_t parse_command_meta(char * tok0); -/* Compares first line of server out file to world.server_test, aborts if they - * don't match, but not before unsetting the flags deleting files in the server - * directory, for in that case those must be assumed to belong to another server - * process. +/* Compare 1st line of server out file to world.server_test, abort if they don't + * match, but not before unsetting flags deleting files in the server directory, + * for in that case those must be assumed to belong to another server process. */ static void server_test(); @@ -71,9 +73,6 @@ static uint8_t thing_in_whitelist(uint8_t id, int16_t * whitelist); */ static void turn_over(); -/* Try to read "msg" as meta command, act accordingly; on success, free it. */ -static uint8_t meta_commands(char * msg); - static uint8_t set_char_by_string_comparison(char * string, char * comparand, @@ -161,7 +160,7 @@ static uint8_t parse_player_command_1arg(char * tok0, char * tok1) -static uint8_t parse_command(char * tok0) +static uint8_t parse_command_nonmeta(char * tok0) { if (parse_player_command_0arg(tok0)) { @@ -197,6 +196,40 @@ static uint8_t parse_command(char * tok0) +static uint8_t parse_command_meta(char * tok0) +{ + if (!strcmp("QUIT", tok0)) + { + return 2; + } + if (!strcmp("PING", tok0)) + { + send_to_outfile("PONG\n", 1); + return 1; + } + if (!strcmp("STACK", tok0)) + { + send_to_outfile("THINGS_BELOW_PLAYER START\n", 1); + struct Thing * player = get_player(); + struct Thing * t; + for (t = world.things; t; t = t->next) + { + if ( t->pos.y == player->pos.y && t->pos.x == player->pos.x + && t != player) + { + struct ThingType * tt = get_thing_type(t->type); + send_to_outfile(tt->name, 0); + send_to_outfile("\n", 1); + } + } + send_to_outfile("THINGS_BELOW_PLAYER END\n", 1); + return 1; + } + return 0; +} + + + static void server_test() { char test[10 + 1 + 10 + 1 + 1]; @@ -290,43 +323,6 @@ static void turn_over() -static uint8_t meta_commands(char * msg) -{ - if (!strcmp("QUIT", msg)) - { - free(msg); - return 2; - } - if (!strcmp("PING", msg)) - { - free(msg); - send_to_outfile("PONG\n", 1); - return 1; - } - if (!strcmp("STACK", msg)) - { - free(msg); - send_to_outfile("THINGS_BELOW_PLAYER START\n", 1); - struct Thing * player = get_player(); - struct Thing * t; - for (t = world.things; t; t = t->next) - { - if ( t->pos.y == player->pos.y && t->pos.x == player->pos.x - && t != player) - { - struct ThingType * tt = get_thing_type(t->type); - send_to_outfile(tt->name, 0); - send_to_outfile("\n", 1); - } - } - send_to_outfile("THINGS_BELOW_PLAYER END\n", 1); - return 1; - } - return 0; -} - - - extern void send_to_outfile(char * answer, uint8_t flush) { try_fwrite(answer, strlen(answer), 1, world.file_out, __func__); @@ -376,69 +372,65 @@ extern void record(char * msg, uint8_t force) -extern void obey_msg(char * msg, uint8_t do_record, uint8_t do_verbose) +extern uint8_t obey_msg(char * msg, uint8_t obey_state) { - if (world.is_verbose && do_verbose) + if (world.is_verbose) { exit_trouble(-1 == printf("Input: %s\n", msg), __func__, "printf"); } set_err_line_options("Trouble with message: ", msg, 0); char * msg_copy = strdup(msg); char * tok0 = token_from_line(msg_copy); + uint8_t ret = 0; if (tok0) { - - if (parse_command(tok0)) + ret = parse_command_meta(tok0); + if (ret || (obey_state < 2 && parse_command_nonmeta(tok0))) { - if (world.exists) - { - world.do_update = 1; - } - if (do_record) + if (!ret) { - record(msg, 0); + if (world.exists) + { + world.do_update = 1; + } + if (1 == obey_state) + { + record(msg, 0); + } } char * tokplus = token_from_line(NULL); err_line(!(!tokplus), "Too many arguments, ignoring overflow."); - free(msg_copy); - return; + } + else if (world.replay) + { + ret = 3; + } + else if (!world.replay) + { + err_line(1, "Unknown command/argument or bad number of tokens."); } } - err_line(1, "Unknown command/argument or bad number of tokens."); free(msg_copy); + return ret; } -extern uint8_t io_loop() +extern uint8_t io_loop(uint8_t obey_state) { while (1) { char * msg = io_round(); server_test(); - if (!msg) + if (msg) { - continue; - } - if (world.is_verbose) - { - exit_trouble(-1 == printf("Input: %s\n", msg), __func__, "printf"); - } - uint8_t test = meta_commands(msg); - if (test) - { - if (2 == test) + uint8_t ret = obey_msg(msg, obey_state); + free(msg); + if ( (!world.replay && 2 == ret) + || ( world.replay && 2 <= ret)) { - return 1; + return ret; } - continue; - } - if (world.replay) - { - free(msg); - return 0; } - obey_msg(msg, 1, 0); - free(msg); } } diff --git a/src/server/run.h b/src/server/run.h index 26a0c2f..414df1b 100644 --- a/src/server/run.h +++ b/src/server/run.h @@ -23,20 +23,23 @@ extern void send_to_outfile(char * answer, uint8_t flush); */ extern void record(char * msg, uint8_t force); -/* Try parsing "msg" into a command to apply, and apply it. Output commands to - * stdout if "do_verbose" and world.is_verbose are set. If "do_record" is set, - * record commands to record file, and run save_world() if the last call to it - * via this function has not happened yet or is at least one minute in the past. +/* Try parsing "msg" into a command to apply. Output "msg" if world.is_verbose. + * If "obey_state" is > 1 and world.replay is set, any non-meta command message + * is not executed, but merely returns 3. The QUIT meta command (if well-formed) + * always returns 2. Other meta commands and (with "obey_state" < 2) non-meta + * commands return 1 if well-formed. Malformed or empty command messages return + * 0. If "obey_state" is 1, "msg" is recorded via a non-forced record(). If a + * non-meta command is executed and world.exists, world.do_update is set. */ -extern void obey_msg(char * msg, uint8_t do_record, uint8_t do_verbose); +extern uint8_t obey_msg(char * msg, uint8_t obey_state); -/* Loop for receiving commands via io_round(), and acting on them. Exits with 1 - * on "QUIT" command. In replay mode, exits with 0 on each non-"QUIT" command. - * In play mode, processes incomming god and player commands via obey_msg(). - * Compares the first line of the server out file with world.server_test to - * ensure that the current server process has not been superseded by a new one. +/* Loop to read commands via io_round() and call obey_msg() with "obey_state" + * set on them. If latter returns 2 and world.replay is not set, or returns > 1 + * and world.replay is set, abort loop to return that result. After io_round(), + * compares 1st line of the server out file is compared with world.server_test + * to ensure the server process hasn't been superseded by a new one. */ -extern uint8_t io_loop(); +extern uint8_t io_loop(uint8_t obey_state);