int
Init_CONNECT(client_t *client, textbuf *buf, CTP_head_t head)
{
/* get the message body */
CTP_CONNECT_t mesg;
int rv = recv_mesg(client->sockfd, &mesg, head);
if (rv < 1)
return rv;
/* check version: only support current version */
if (mesg.version != PROTOCOL_VERSION) {
free_mesg(mesg);
err_and_close(client, UNSUPPORTED_VERSION);
return 0;
}
free_mesg(mesg);
/* transient... */
client->state = Version;
/* build ACKCONNECT response */
CTP_ACKCONNECT_t response;
response.version = PROTOCOL_VERSION;
response.client_id = client->id;
response.options = new_options();
/* send response */
rv = send_ACKCONNECT(client->sockfd, response);
free_options(response.options);
client->state = Connected;
return rv;
}
bool
Program_Options::check_command()
{
string com_name;
pointer<po::options_description> com_desc;
for (auto com : *command_container) {
com_name = com.first;
com_desc = com.second;
if (command == com_name) {
vector<string> opts =
po::collect_unrecognized(parsed->options,
po::include_positional);
opts.erase(opts.begin());
po::store(po::command_line_parser(opts).
options(*com_desc).
run(), vm);
po::notify(vm);
if ( com_name == "new") {
new_options();
}
else if ( com_name == "build") {
build_options();
}
return true;
}
}
return false;
}
int
Connected_OPEN(client_t *client, textbuf *buf, CTP_head_t head)
{
CTP_OPEN_t mesg;
int rv = recv_mesg(client->sockfd, &mesg, head);
if (rv < 1)
return rv;
/* check for correct client id */
if (mesg.client_id != client->id) {
free_mesg(mesg);
return -1;
}
/* check file id
* this server only supports a "default" file */
if (mesg.file_id != 0) {
free_mesg(mesg);
send_err(client, BAD_FILE_ID);
return 1;
}
free_mesg(mesg);
/* transient... */
client->state = Opening;
/* build ACKOPEN response */
CTP_ACKOPEN_t response;
response.options = new_options();
/* send response */
rv = send_ACKOPEN(client->sockfd, response);
free_options(response.options);
client->state = Open;
if (rv < 1)
return rv;
/* send STATUS message to all clients */
CTP_STATUS_t status = get_status(buf);
client_t *c;
for (c = clients; c <= max_active_client; ++c) {
if (c->active)
send_STATUS(c->sockfd, status);
}
free_options(status.options);
return 1;
}
int
Locked_EDIT(client_t *client, textbuf *buf, CTP_head_t head)
{
CTP_EDIT_t mesg;
int rv = recv_mesg(client->sockfd, &mesg, head);
if (rv < 1)
return rv;
/* check for correct client id */
if (mesg.client_id != client->id) {
free_mesg(mesg);
return -1;
}
switch (mesg.edit_action) {
case INS:
rv = tboverwrite(buf, mesg.pos, 0, mesg.data, mesg.datalen);
break;
case OVR:
rv = tboverwrite(buf, mesg.pos, mesg.len, mesg.data, mesg.datalen);
break;
case DEL:
rv = tboverwrite(buf, mesg.pos, mesg.len, NULL, 0);
break;
}
if (rv < 0) {
/* reject the edit */
free_mesg(mesg);
rv = send_err(client, REJECT_EDIT);
} else {
/* prepare and send ACKEDIT */
CTP_ACKEDIT_t response;
response.options = new_options();
rv = send_ACKEDIT(client->sockfd, response);
free_options(response.options);
/* relay EDIT to other clients */
client_t *c;
for (c = clients; c <= max_active_client; ++c) {
if (c != client && c->active)
send_EDIT(c->sockfd, mesg);
}
}
free_mesg(mesg);
return rv;
}
/* response.options MUST be free_options()ed! */
CTP_STATUS_t
get_STATUS(textbuf *buf)
{
client_t *c;
char id_buf[sizeof(client->id) + 1] = { 0 };
CTP_STATUS_t response;
/* XXX TODO set response.checksum */
response.options = new_options();
/* build list of peers in options */
for (c = clients; c <= max_active_client; ++c) {
if (c->active) {
memcpy(id_buf, &c->id, sizeof(c->id));
add_option(response.options, "Peer ID", id_buf);
/* TODO Peer Nick? */
if (c->state == Locked)
add_option(response.options, "Lock ID", id_buf);
}
}
return response;
}
int
Open_REQLOCK(client_t *client, textbuf *buf, CTP_head_t head)
{
CTP_OPEN_t mesg;
int rv = recv_mesg(client->sockfd, &mesg, head);
if (rv < 1)
return rv;
/* check for correct client id */
if (mesg.client_id != client->id) {
free_mesg(mesg);
return -1;
}
/* only one client may lock at a time */
if (locking_client != NULL) {
free_mesg(mesg);
send_err(client, CANT_LOCK);
return 1;
}
free_mesg(mesg);
/* transient... */
client->state = WaitLock;
/* build ACKLOCK response */
CTP_ACKLOCK_t response;
response.options = new_options();
/* send response */
rv = send_ACKOPEN(client->sockfd, response);
free_options(response.options);
client->state = Locked;
locking_client = client;
return rv;
}