int main(int o_argc, const_stringv_t o_argv) {
if(o_argc < 2) {
println("Usage: client values ...");
exit(EXIT_SUCCESS);
}
byte _buffer[MSG_SIZE]; /* recieved message buffer */
struct st_msg _stout ; /* send message data structure */
Msg _msg, _out ; /* send and recieved message references */
size_t _msglen ; /* length of the send message string */
_out = &_stout;
key_t _key ; /* IPC key */
int _handle; /* IPC id */
struct msgbuf* _msgbuf = cast(struct msgbuf*)_buffer;
/* open an existing quaue */
asserts( _key = ftok(".", 'x') );
asserts( _handle = msgget(_key, S_IRUSR | S_IWUSR) );
_out->from = getpid() ; /* set 'from' field into current process id */
_out->to = 1 ; /* set 'to' field into 1 which means server */
_out->length = o_argc - 1; /* set vector length to number of command line arguments */
/* allocate space for apropriate number of values */
assertnz( _out->values = malloc(sizeof(int) * _out->length) );
/* setup values */
for(size_t i = 0; i < _out->length; i++) {
_out->values[i] = atoi(o_argv[i + 1]);
}
/* prepare message buffer */
_msgbuf->mtype = _out->to;
assertnz( msg_save(_out, _msgbuf->mtext, MSG_SIZE - sizeof(long) ) );
_msglen = strlen(_msgbuf->mtext) + sizeof(msgbuf);
assertnz(_msglen <= MSG_SIZE); /* respect the message size limit */
/* send the request */
asserts( msgsnd(_handle, _msgbuf, _msglen, 0) );
/* wait for the respose */
asserts( msgrcv(_handle, _msgbuf, MSG_SIZE, _out->from, 0) );
assertnz( _msg = msg_load(_msgbuf->mtext) );
/* write the respose into the standard output */
println("client recieved:");
println(_msgbuf->mtext);
_msg = msg_destroy(_msg);
exit(EXIT_SUCCESS);
}
static void msg_command( struct mg_connection* nc, const char* p, int len )
{
const char* cmd = p;
int cmd_len = param_len( p, len );
if ( cmd_len == -1 )
{
perror("cmd_len == -1");
return;
}
p += (cmd_len+1);
len -= (cmd_len+1);
if ( strncmp( cmd, "SAVE", cmd_len ) == 0 )
{
msg_save( p, len );
return;
}
if ( strncmp( cmd, "RM", cmd_len ) == 0 )
{
msg_rm( p, len );
return;
}
if ( strncmp( cmd, "JOIN", cmd_len ) == 0)
{
send_sources(nc);
return;
}
if ( strncmp( cmd, "ARCHIVE", cmd_len ) == 0)
{
save_archive();
return;
}
if ( strncmp( cmd, "SAVE-ALL", cmd_len ) == 0 )
{
save_all(nc);
return;
}
printf("UNKNOWN %s\n",cmd);
}