int price_valid(float num, char endChk, int p)
{
/*---Local Variable---*/
int i; /*flag for exit of menu in function main*/
/*---Error Conditions---*/
if(p==0)
{
i=0;
printf("Error Input ***Must be numeric***\n");
bufferClear();
}
else if(endChk!='\n')
{
i=0;
printf("Error Input ***Trailing characters detected***\n");
bufferClear();
}
else if(p<0)
{
i=0;
printf("Error Input ***Value must be non-negative***\n");
}
else if(p==2)
i=1;
return i;
}
bool protocolUpdate(int pSocket, fd_set *pSocketSet, int pMaxSocket, int pBufferSize)
{
UNUSED(pMaxSocket);
bufferGrow(&gMessageBuffer, pBufferSize);
bufferClear(&gMessageBuffer);
infof("Communication on socket %d.\n", pSocket);
// send(), recv(), close()
// Call FD_CLR(pSocket, pSocketSet) on disconnection
bool success = true;
int messageSize;
int flags = 0;
// Receive a message from client
messageSize = recv(pSocket, gMessageBuffer->buffer, gMessageBuffer->size, flags);
if (0 < messageSize)
{
// Return the message to the sender
networkMessagePrivate(pSocket, gMessageBuffer->buffer);
}
else if (0 == messageSize)
{
close(pSocket);
FD_CLR(pSocket, pSocketSet);
noticef("Client disconnected from socket %d.\n", pSocket);
fflush(stdout);
}
else if (messageSize < 0)
{
warningf("Failed to receive data from socket %d.", pSocket);
success = false;
}
return success;
}
bool flush_output(SOCKET_DATA *dsock) {
bool success = TRUE;
BUFFER *buf = NULL;
// run any hooks prior to flushing our text
hookRun("flush", hookBuildInfo("sk", dsock));
// quit if we have no output and don't need/can't have a prompt
if(bufferLength(dsock->outbuf) <= 0 &&
(!dsock->bust_prompt || !socketHasPrompt(dsock)))
return success;
buf = newBuffer(1);
// send our outbound text
if(bufferLength(dsock->outbuf) > 0) {
hookRun("process_outbound_text", hookBuildInfo("sk", dsock));
hookRun("finalize_outbound_text", hookBuildInfo("sk", dsock));
//success = text_to_socket(dsock, bufferString(dsock->outbuf));
bufferCat(buf, bufferString(dsock->outbuf));
bufferClear(dsock->outbuf);
}
// send our prompt
if(dsock->bust_prompt && success) {
socketShowPrompt(dsock);
hookRun("process_outbound_prompt", hookBuildInfo("sk", dsock));
hookRun("finalize_outbound_prompt", hookBuildInfo("sk", dsock));
//success = text_to_socket(dsock, bufferString(dsock->outbuf));
bufferCat(buf, bufferString(dsock->outbuf));
bufferClear(dsock->outbuf);
dsock->bust_prompt = FALSE;
}
success = text_to_socket(dsock, bufferString(buf));
deleteBuffer(buf);
// return our success
return success;
}
void next_cmd_from_buffer(SOCKET_DATA *dsock) {
// do we have stuff in our input list? If so, use that instead of inbuf
dsock->cmd_read = FALSE;
if(listSize(dsock->input) > 0) {
char *cmd = listPop(dsock->input);
bufferClear(dsock->next_command);
bufferCat(dsock->next_command, cmd);
dsock->cmd_read = TRUE;
dsock->bust_prompt = TRUE;
free(cmd);
}
else {
int i = 0, cmd_end = -1;
// are we building an IAC command? Try to continue it
if(bufferLength(dsock->iac_sequence) > 0)
i += read_iac_sequence(dsock, 0);
// copy over characters until we hit a newline, an IAC command, or \0
for(; dsock->inbuf[i] != '\0' && cmd_end < 0; i++) {
switch(dsock->inbuf[i]) {
default:
// append us to the command
bufferCatCh(dsock->next_command, dsock->inbuf[i]);
break;
case '\n':
// command end found
cmd_end = ++i;
case '\r':
// ignore \r ... only pay attention to \n
break;
case (signed char) IAC:
i += read_iac_sequence(dsock, i) - 1;
break;
}
if(cmd_end >= 0)
break;
}
// move the context of inbuf down
int begin = 0;
while(dsock->inbuf[i] != '\0')
dsock->inbuf[begin++] = dsock->inbuf[i++];
dsock->inbuf[begin] = '\0';
// did we find a command?
if(cmd_end >= 0) {
dsock->cmd_read = TRUE;
dsock->bust_prompt = TRUE;
}
}
}
int PySocket_set_outbound_text(PySocket *self, PyObject *value, void *closure) {
if(!PyString_Check(value)) {
PyErr_Format(PyExc_TypeError, "Outbound text must be in string format.");
return -1;
}
SOCKET_DATA *sock = PySocket_AsSocket((PyObject *)self);
if(sock == NULL)
return -1;
else {
bufferClear(socketGetOutbound(sock));
bufferCat(socketGetOutbound(sock), PyString_AsString(value));
return 0;
}
}
void resetSetArg (RESET_DATA *reset, const char *arg) {
bufferClear(reset->arg);
bufferCat(reset->arg, arg);
}
void input_handler() {
LIST_ITERATOR *sock_i = newListIterator(socket_list);
SOCKET_DATA *sock = NULL;
ITERATE_LIST(sock, sock_i) {
// Close sockects we are unable to read from, or if we have no handler
// to take in input
if ((FD_ISSET(sock->control, &rFd) && !read_from_socket(sock)) ||
listSize(sock->input_handlers) == 0) {
close_socket(sock, FALSE);
continue;
}
/* Ok, check for a new command */
next_cmd_from_buffer(sock);
// are we idling?
if(!sock->cmd_read)
sock->idle += 1.0 / PULSES_PER_SECOND;
/* Is there a new command pending ? */
else if (sock->cmd_read) {
sock->idle = 0.0;
IH_PAIR *pair = listGet(sock->input_handlers, 0);
if(pair->python == FALSE) {
void (* handler)(SOCKET_DATA *, char *) = pair->handler;
char *cmddup = strdup(bufferString(sock->next_command));
handler(sock, cmddup);
free(cmddup);
}
else {
PyObject *arglist = Py_BuildValue("Os", socketGetPyFormBorrowed(sock),
bufferString(sock->next_command));
PyObject *retval = PyEval_CallObject(pair->handler, arglist);
// check for an error:
if(retval == NULL)
log_pyerr("Error with a Python input handler");
// garbage collection
Py_XDECREF(retval);
Py_XDECREF(arglist);
}
// append our last command to the command history. History buffer is
// 100 commands, so pop off the earliest command if we're going over
listPut(sock->command_hist, strdup(bufferString(sock->next_command)));
if(listSize(sock->command_hist) > 100)
free(listRemoveNum(sock->command_hist, 100));
bufferClear(sock->next_command);
// we save whether or not we read a command until our next call to
// input_handler(), at which time it is reset to FALSE if we didn't read
// sock->cmd_read = FALSE;
}
#ifdef MODULE_ALIAS
// ACK!! this is so yucky, but I can't think of a better way to do it...
// if this command was put in place by an alias, decrement the alias_queue
// counter by one. This counter is in place mainly so aliases do not end
// up calling eachother and making us get stuck in an infinite loop.
if(sock->player) {
int alias_queue = charGetAliasesQueued(sock->player);
if(alias_queue > 0)
charSetAliasesQueued(sock->player, --alias_queue);
}
#endif
} deleteListIterator(sock_i);
}
//
// read an IAC sequence from the socket's input buffer. When we hit a
// termination point, send a hook and clear he buffer. Return how many
// characters to skip ahead in the input handler
int read_iac_sequence(SOCKET_DATA *dsock, int start) {
// are we doing subnegotiation?
bool subneg = strchr(bufferString(dsock->iac_sequence), SB) != NULL;
int i = start;
bool done = FALSE;
for(; dsock->inbuf[i] != '\0'; i++) {
// are we looking for IAC?
if(bufferLength(dsock->iac_sequence) == 0) {
// Oops! Something is broken
if(dsock->inbuf[i] != (signed char) IAC)
return 0;
else
bufferCatCh(dsock->iac_sequence, IAC);
}
// are we looking for a command?
else if(bufferLength(dsock->iac_sequence) == 1) {
// did we find subnegotiation?
if(dsock->inbuf[i] == (signed char) SB) {
bufferCatCh(dsock->iac_sequence, dsock->inbuf[i]);
subneg = TRUE;
}
// basic three-character command
else if(dsock->inbuf[i] == (signed char) WILL ||
dsock->inbuf[i] == (signed char) WONT ||
dsock->inbuf[i] == (signed char) DO ||
dsock->inbuf[i] == (signed char) DONT)
bufferCatCh(dsock->iac_sequence, dsock->inbuf[i]);
// something went wrong
else {
bufferClear(dsock->iac_sequence);
return 2;
}
}
// are we doing subnegotiation?
else if(subneg) {
int last_i = bufferLength(dsock->iac_sequence) - 2;
signed char last = bufferString(dsock->iac_sequence)[last_i];
bufferCatCh(dsock->iac_sequence, dsock->inbuf[i]);
// have hit the end of the subnegotiation? Break out if so
if(last == (signed char) IAC && dsock->inbuf[i] == (signed char) SE) {
done = TRUE;
break;
}
}
// this is the end
else {
bufferCatCh(dsock->iac_sequence, dsock->inbuf[i]);
done = TRUE;
break;
}
}
int len = i - start + (dsock->inbuf[i] == '\0' ? 0 : 1);
// broadcast the message we parsed, and prepare for the next sequence
if(done == TRUE) {
hookRun("receive_iac",
hookBuildInfo("sk str", dsock,bufferString(dsock->iac_sequence)));
bufferClear(dsock->iac_sequence);
}
return len;
}
void expand_dynamic_descs_dict(BUFFER *desc, PyObject *dict,const char *locale){
// make our new buffer
BUFFER *new_desc = newBuffer(bufferLength(desc)*2);
BUFFER *code = newBuffer(1); // for things we have to evaluate
bool proc_cond = FALSE; // are we processing a conditional statement?
// copy over all of our description that is not dynamic text
int start, end, i, j, size = bufferLength(desc);
for(i = 0; i < size; i++) {
// figure out when our next dynamic desc is.
start = next_letter_in(bufferString(desc) + i, '[');
// no more
if(start == -1) {
// copy the rest and skip to the end of the buffer
bprintf(new_desc, "%s", bufferString(desc) + i);
i = size - 1;
}
// we have another desc
else {
// copy everything up to start
while(start > 0) {
bprintf(new_desc, "%c", *(bufferString(desc) + i));
start--;
i++;
}
// skip the start marker
i++;
// find our end
end = next_letter_in(bufferString(desc) + i, ']');
// make sure we have it
if(end == -1)
break;
// copy everything between start and end, and format the code
bufferClear(code);
for(j = 0; j < end; j++)
bprintf(code, "%c", *(bufferString(desc) + i + j));
bufferReplace(code, "\n", " ", TRUE);
bufferReplace(code, "\r", "", TRUE);
// skip i up to the end
i = i + end;
// are we trying to process a conditional statement?
if(!strncasecmp(bufferString(code), "if ", 3)) {
// strip out the leading if and whitespace
char *code_copy = strdup(bufferString(code));
char *ptr = code_copy + 3;
while(isspace(*ptr)) ptr++;
// copy over the cleaned-up code, signal we're processing a conditional
bufferClear(code);
bufferCat(code, ptr);
proc_cond = TRUE;
// garbage collection
free(code_copy);
}
// evaluate the code
PyObject *retval = eval_script(dict, bufferString(code), locale);
// did we encounter an error?
if(retval == NULL)
break;
// are we evaluating a conditional or no?
else if(proc_cond) {
BUFFER *cond_retval =
expand_dynamic_conditional(desc, dict, retval, locale, &i);
// if we have something to print, expand its embedded python
if(*bufferString(cond_retval))
expand_dynamic_descs_dict(cond_retval, dict, locale);
bufferCat(new_desc, bufferString(cond_retval));
deleteBuffer(cond_retval);
proc_cond = FALSE;
}
// append the output
else if(PyString_Check(retval))
bprintf(new_desc, "%s", PyString_AsString(retval));
else if(PyInt_Check(retval))
bprintf(new_desc, "%ld", PyInt_AsLong(retval));
else if(PyFloat_Check(retval))
bprintf(new_desc, "%lf", PyFloat_AsDouble(retval));
// invalid return type...
else if(retval != Py_None)
log_string("dynamic desc had invalid evaluation: %s",
bufferString(code));
// oddly, freeing retval here corrupt memory.
// And not freeing it doesn't cause a memory leak. So bizarre...
// Py_XDECREF(retval);
}
}
// copy over our contents
bufferCopyTo(new_desc, desc);
// garbage collection
deleteBuffer(code);
deleteBuffer(new_desc);
}
//
// Tries to expand out a conditional statement. Returns whatever is expanded.
// Moves i to the proper place after the conditional has been expanded in the
// originating buffer.
BUFFER *expand_dynamic_conditional(BUFFER *desc, PyObject *dict,
PyObject *retval, const char *locale,
int *pos) {
BUFFER *new_desc = newBuffer(bufferLength(desc)*2);
BUFFER *code = newBuffer(1); // code we have to evaluate
int j, i = *pos + 1; // +1 to skip the current closing ]
bool match = PyObject_IsTrue(retval);
while(TRUE) {
// copy over all of our contents for the new desc and increment i
while(*(bufferString(desc)+i) &&
!startswith(bufferString(desc)+i, "[else]") &&
!startswith(bufferString(desc)+i, "[elif ") &&
!startswith(bufferString(desc)+i, "[/if]")) {
if(match == TRUE)
bprintf(new_desc, "%c", *(bufferString(desc) + i));
i++;
}
// did we terminate?
if(match == TRUE || startswith(bufferString(desc)+i, "[/if]"))
break;
// we haven't had a match yet. Are we trying an else or elif?
else if(startswith(bufferString(desc)+i, "[else]")) {
match = TRUE;
i += 6;
}
else if(startswith(bufferString(desc)+i, "[elif ")) {
// skip the elif and spaces
i += 6;
while(isspace(*(bufferString(desc)+i)))
i++;
// find our end
int end = next_letter_in(bufferString(desc) + i, ']');
// make sure we have it
if(end == -1)
break;
// copy everything between start and end, and format the code
bufferClear(code);
for(j = 0; j < end; j++)
bprintf(code, "%c", *(bufferString(desc) + i + j));
bufferReplace(code, "\n", "", TRUE);
// skip i up to and beyond the ] marker
i = i + end + 1;
// evaluate the code
PyObject *retval = eval_script(dict, bufferString(code), locale);
match = retval && PyObject_IsTrue(retval);
// did we encounter an error?
if(retval == NULL)
break;
}
}
// skip everything up to our closing [/if]
while(*(bufferString(desc)+i) && !startswith(bufferString(desc)+i, "[/if]"))
i++;
if(startswith(bufferString(desc)+i, "[/if]"))
i += 4; // put us at the closing ], not the end of the ending if block
// garbage collection
deleteBuffer(code);
// return our expansion and move our i
*pos = i;
return new_desc;
}
