// main client handler procedure, runs in its own thread
void * thread_proc(void * param)
{
CLIENT_INFO client_info;
memset(&client_info, 0, sizeof(client_info));
client_info.fd = (int)param;
strcpy(client_info.dir, "/");
send_code(client_info.fd, 220);
while (1)
{
int result = client_read(client_info.fd, client_info.buf, &client_info.buffer_pos);
if (result == -1) break;
while (client_info.buffer_pos >= 4)
{
char line[BUFFER_SIZE] = { 0 };
if (compare_command(client_info.buf, "USER")) command_user(&client_info);
else if (compare_command(client_info.buf, "PASS")) command_pass(&client_info);
else if (compare_command(client_info.buf, "PWD")) command_pwd(&client_info);
else if (compare_command(client_info.buf, "PORT")) command_port(&client_info);
else if (compare_command(client_info.buf, "PASV")) command_pasv(&client_info);
else if (compare_command(client_info.buf, "LIST")) command_list(&client_info);
else if (compare_command(client_info.buf, "CWD")) command_cwd(&client_info);
else if (compare_command(client_info.buf, "RETR")) command_retr(&client_info);
else if (compare_command(client_info.buf, "NOOP")) command_noop(&client_info);
else if (compare_command(client_info.buf, "SYST")) command_syst(&client_info);
else if (compare_command(client_info.buf, "TYPE")) command_type(&client_info);
else if (compare_command(client_info.buf, "QUIT"))
{
get_line(client_info.fd, line, client_info.buf, &client_info.buffer_pos);
send_code(client_info.fd, 221);
close(client_info.fd);
client_info.fd = 0;
return NULL;
}
else
{
get_line(client_info.fd, line, client_info.buf, &client_info.buffer_pos);
send_code(client_info.fd, 500);
}
}
}
if (client_info.fd != 0)
{
close(client_info.fd);
client_info.fd = 0;
}
return NULL;
}
void command_json_object(json_t *element, int indent) {
size_t size;
const char *key;
json_t *value;
//print_json_indent(indent);
size = json_object_size(element);
//printf("JSON Object of %ld pair:\n", size);
json_object_foreach(element, key, value) {
//print_json_indent(indent + 2);
//printf("JSON Key: \"%s\"\n", key);
command_type(value, indent + 2, key);
}
int main () {
FILE * fp = fopen("opcode.txt","r");
char input_str[MAX_LEN_INPUT],
command[MAX_LEN_COMMAND],
argv[3][MAX_LEN_INPUT],
*mnemonic = (char *) calloc(LEN_MNEMONIC, sizeof(char));
int i, j,
error_flag, comma_flag, linking_loader_flag = 0,
idx_input_str, idx_argv,
opcode, format;
hist_list * new_hist_elem = NULL;
history_head = (hist_list *) calloc(1, sizeof(hist_list));
/* make opcode table */
for (i = 0; i < 20; i++) {
table_head[i] = (op_list *) calloc(1, sizeof(op_list));
}
// opcode에 관한 정보를 받고 linked list에 저장한다.
i = 0;
while (i < NUM_OF_OPCODES) {
fscanf(fp, "%02X %s %d/%*s\n", &opcode, mnemonic, &format);
// TODO : opcode table에서 linking 시켜 op_list 를 굳이 새로 만들지 않게 할 것 && 이 부분도 함수로 moduling 할 것 && trash -> format && mnemonic 바로 받는 것도 생각해 보기
make_linking_table(&table_head[hash_func(mnemonic)], opcode, mnemonic, format);
opcode_table[i].opcode = opcode;
opcode_table[i].format = format;
strcpy(opcode_table[i].mnemonic, mnemonic);
i ++;
}
while (1) {
/**************************************/
/********** initialization ************/
/**************************************/
error_flag = 0;
comma_flag = 0;
idx_input_str = 0;
linking_loader_flag = 0;
for (i = 0; i < MAX_LEN_COMMAND; i++) { command[i] = 0; }
for (i = 0; i < 3; i++) { for (j = 0; j < MAX_LEN_INPUT; j++) { argv[i][j] = 0; } }
for (i = 0; i < MAX_LEN_INPUT; i++) { input_str[i] = 0; }
/********** initialization end ********/
printf("sicsim> ");
/**************************************/
/****** input string handling *********/
/**************************************/
gets(input_str);
/** get command name **/
while (input_str[idx_input_str] == ' ') { idx_input_str ++; } /* ignore front space */
// input consists of space, enter
if (!input_str[idx_input_str]) {
continue;
}
idx_argv = 0;
while ((input_str[idx_input_str] != ' ' && input_str[idx_input_str] != '\t') && (input_str[idx_input_str] != 0)) {
command[idx_argv++] = input_str[idx_input_str++];
}
command[idx_argv] = 0;
while (input_str[idx_input_str] == ' ' ||
input_str[idx_input_str] == '\t' ||
input_str[idx_input_str] == '\n') {
idx_input_str++;
}
/* ---------- linking loader check and execute command ---------- */
if (!strcmp(command, "progaddr")) {
error_flag = linking_loader_main(1, input_str + idx_input_str);
linking_loader_flag = 1;
}
else if (!strcmp(command, "loader")) {
error_flag = linking_loader_main(2, input_str + idx_input_str);
linking_loader_flag = 1;
}
else if (!strcmp(command, "run")) {
error_flag = linking_loader_main(3, input_str + idx_input_str);
linking_loader_flag = 1;
}
else if (!strcmp(command, "bp")) {
error_flag = linking_loader_main(4, input_str + idx_input_str);
linking_loader_flag = 1;
}
if (error_flag) {
continue;
}
/* ---------- linking loader check end --------- */
if (!linking_loader_flag) {
/* get parameter name */
for (i = 0; i < 3 ;i++) {
comma_flag = 0;
/** i th(second, third, fourth) argument value **/
if (input_str[idx_input_str]) { // not end
/* ignore front space and counting comma */
while (input_str[idx_input_str] == ' ' || input_str[idx_input_str] == ',') {
if (input_str[idx_input_str] == ',') {
comma_flag++;
}
idx_input_str ++;
}
error_flag = error_check_comma(i, comma_flag);
idx_argv = 0;
while (input_str[idx_input_str] != ' ' && (input_str[idx_input_str] != 0) && (input_str[idx_input_str] != ',') && input_str[idx_input_str] != '\n') { // except 0(end of string), ",", space
argv[i][idx_argv++] = input_str[idx_input_str++];
}
argv[i][idx_argv] = 0;
}
}
/* error checking */
if (error_flag) {
SEND_ERROR_MESSAGE("COMMA");
continue;
}
else if(error_check_moreargv(input_str, idx_input_str)) {
SEND_ERROR_MESSAGE("OVERFULL ARGV");
continue;
}
}
/****** input string handling end ********/
/*****************************************/
/*********** execute command *************/
/*****************************************/
if (!strcmp(command, "help") || !strcmp(command, "h")) {
// argv[0] exist - error
if (argv[0][0]) {
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
command_help();
}
else if (!strcmp(command, "dir") || !strcmp(command, "d")) {
// argv[0] exist - error
if (argv[0][0]) {
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
command_dir();
}
else if (!strcmp(command, "quit") || !strcmp(command, "q")) {
// argv[0] exist - error
if (argv[0][0]) {
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
break;
}
else if (!strcmp(command, "history") || !strcmp(command, "hi")) {
// argv[0] exist - error
if (argv[0][0]) {
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
// function check
}
else if (!strcmp(command, "dump") || !strcmp(command, "du")) {
// exception handling - boundary error and existing thrid argv
int start = strtoi(argv[0], &error_flag, 16),
end = strtoi(argv[1], &error_flag, 16);
/* error handling */
if (error_flag) { // does not integer
SEND_ERROR_MESSAGE("NOT INTEGER");
continue;
}
if ((start < 0) || (end < 0) || (start > 0xFFFFF) || (argv[1][0] && (start > end)) || start > 0xFFFFF || end > 0xFFFFF) { // boundary error
SEND_ERROR_MESSAGE("BOUNDARY ERROR");
continue;
}
if (argv[2][0]) { // argv[2] exists
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
// params don't exist
if (!argv[0][0]) {
start = -1;
}
else if (!argv[1][0]) {
end = -1;
}
command_dump(start, end);
}
else if (!strcmp(command, "edit") || !strcmp(command, "e")) {
int addr = strtoi(argv[0], &error_flag, 16),
val = strtoi(argv[1], &error_flag, 16);
/* error handling */
if (error_flag) { // does not integer
SEND_ERROR_MESSAGE("NOT INTEGER");
continue;
}
if (addr < 0x0 || addr > 0xFFFFF || val < 0 || val > 0xFF) { // boundary error
SEND_ERROR_MESSAGE("BOUNDARY ERROR");
continue;
}
if (!argv[0][0] || !argv[1][0] || argv[2][0]) { // argv[0] doesn't exist || argv[1] doesn't exist || argv[2] exist
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
command_edit(addr, val);
}
else if (!strcmp(command, "fill") || !strcmp(command, "f")) {
int start = strtoi(argv[0], &error_flag, 16),
end = strtoi(argv[1], &error_flag, 16),
val = strtoi(argv[2], &error_flag, 16);
/* error handling */
if (error_flag) { // does not integer
SEND_ERROR_MESSAGE("NOT INTEGER");
continue;
}
if ((start < 0) || (end < 0) || (start > 0xFFFFF)|| (argv[1][0] && (start > end)) || end > 0xFFFFF || val < 0 || val > 0xFF) { // boundary error
SEND_ERROR_MESSAGE("BOUNDARY ERROR");
continue;
}
if (!argv[0][0] || !argv[1][0] || !argv[2][0]) { // argv[0] doesn't exist || argv[1] doesn't exist || argv[2] exist
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
command_fill(start, end, val);
}
else if (!strcmp(command, "reset")) {
// argv[0] exist - error
if (argv[0][0]) {
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
command_reset();
}
else if (!strcmp(command, "opcode")) {
char input_mnem[LEN_MNEMONIC];
// argv[0] exist - error
if (!argv[0][0] || argv[1][0]) {
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
strcpy(input_mnem, argv[0]);
command_opcode(input_mnem, &error_flag);
if (error_flag == -1) {
SEND_ERROR_MESSAGE("THERE IS NO MATCHING MNEMONIC");
continue;
}
}
else if (!strcmp(command, "opcodelist")) {
// argv[0] exist - error
if (argv[0][0]) {
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
command_opcodelist();
}
else if (!strcmp(command, "assemble")) {
if (argv[1][0] || !argv[0][0]) { // argv[1][0] != 0 implies that second argument exists and argv[1][0] == 0 implies that first argument does not exist.
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
// TODO : Make a function deallocating a symbol_table
if (!symbol_table) {
// free symbol_table
// FATAL it needs to be fixed.
symbol_table = NULL;
}
if (strcmp(argv[0] + strlen(argv[0]) - 4, ".asm")) {
SEND_ERROR_MESSAGE("THIS IS NOT .asm file");
}
command_assemble(argv[0], &error_flag);
if (error_flag) {
continue;
}
}
else if (!strcmp(command, "type")) {
if (argv[1][0] || !argv[0][0]) { // argv[1][0] != 0 implies that second argument exists and argv[1][0] == 0 implies that first argument does not exist.
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
command_type(argv[0], &error_flag);
if (error_flag) {
// error is occured
continue;
}
}
else if (!strcmp(command, "symbol")) {
// XXX : error check!
if (argv[0][0]) {
SEND_ERROR_MESSAGE("FORMAT DOES NOT MATCH THIS COMMAND");
continue;
}
if (!complete_table) {
SEND_ERROR_MESSAGE("THERE IS NO SYMBOL TABLE");
continue;
}
command_symbol();
}
else if (linking_loader_flag) {}
else {
SEND_ERROR_MESSAGE("THIS COMMAND DOES NOT EXIST");
continue;
}
hist_list * tmp_hist;
// store in hist_list(linked list for history has command lines of history
new_hist_elem = (hist_list *) calloc(1, sizeof(hist_list));
strcpy(new_hist_elem->command_line, input_str);
tmp_hist = history_head;
while (tmp_hist->next) { tmp_hist = tmp_hist->next; }
tmp_hist->next = new_hist_elem;
if (!strcmp(command, "history") || !strcmp(command, "hi")) {
command_history();
}
}
fclose(fp);
// deallocating memory
deallocate_opcode();
deallocate_history();
return 0;
}
