/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Copyright (C) 1986-2010, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
*
* This program is free software; you can redistribute it and/or modify
*
* ---
*
- * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
- * related information and legal notices. It is expected that any future
- * projects/authors will amend these files as needed.
+ * See files README, COPYING and CREDITS in the root of the source
+ * tree for related information and legal notices. It is expected
+ * that future projects/authors will amend these files as needed.
*
* ---
*
* ioqueue.c: Read and write i/o queues
- *
+ *
* Known contributors to this file:
- *
+ *
*/
/*
* that is left for a higher level.
*/
-#include <stdio.h>
-#include <stdlib.h> /* malloc free */
-#include <sys/types.h>
-#if !defined(_WIN32)
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
#include <sys/uio.h>
-#endif
+#include "ioqueue.h"
#include "misc.h"
#include "queue.h"
-#include "ioqueue.h"
-
-static int ioqtocbuf(struct ioqueue *ioq, s_char *buf, int cc,
- register int stopc);
-#if !defined(_WIN32)
-static int ioqtoiov(struct ioqueue *ioq, struct iovec *iov,
- register int max);
-#endif
-static int ioqtobuf(struct ioqueue *ioq, s_char *buf, int cc);
-static int appendcc(struct ioqueue *ioq, s_char *buf, int cc);
-static int removecc(struct ioqueue *ioq, register int cc);
-#if defined(_WIN32)
-static void loc_StripDels(char *pBuf);
-#endif
+struct io {
+ struct emp_qelem queue;
+ int size;
+ int nbytes;
+ int offset;
+ char *data;
+};
+
+struct ioqueue {
+ struct io list;
+ int bufsize;
+ int cc;
+};
+
+static int ioqtocbuf(struct ioqueue *ioq, char *buf, int cc, int stopc);
+static int ioqtoiov(struct ioqueue *ioq, struct iovec *iov, int max);
+static int ioqtobuf(struct ioqueue *ioq, char *buf, int cc);
+static int appendcc(struct ioqueue *ioq, char *buf, int cc);
+static int removecc(struct ioqueue *ioq, int cc);
struct ioqueue *
ioq_create(int size)
{
struct ioqueue *ioq;
- ioq = (struct ioqueue *)malloc(sizeof(struct ioqueue));
+ ioq = malloc(sizeof(struct ioqueue));
emp_initque(&ioq->list.queue);
ioq->list.nbytes = 0;
ioq->list.offset = 0;
ioq->list.size = 0;
- ioq->list.data = 0;
+ ioq->list.data = NULL;
ioq->bufsize = size;
ioq->cc = 0;
return ioq;
void
ioq_destroy(struct ioqueue *ioq)
{
-#if !defined(aix) && !defined(NeXT)
-/* ioq_drain doesn't work under aix or NeXT... dunno why --ts */
ioq_drain(ioq);
-#endif /* aix */
- free((s_char *)ioq);
+ free(ioq);
}
void
while ((qp = ioq->list.queue.q_forw) != &ioq->list.queue) {
io = (struct io *)qp;
- (void)emp_remque(&io->queue);
- (void)free((s_char *)io->data);
- (void)free((s_char *)io);
+ emp_remque(&io->queue);
+ free(io->data);
+ free(io);
}
ioq->cc = 0;
* iovec, but don't actually dequeue the data.
* return # of iovec initialized.
*/
-#if !defined(_WIN32)
int
ioq_makeiov(struct ioqueue *ioq, struct iovec *iov, int cc)
{
return 0;
return ioqtoiov(ioq, iov, cc);
}
-#endif
/*
* Copy the specified number of characters into the buffer
* number of bytes actually found.
*/
int
-ioq_peek(struct ioqueue *ioq, s_char *buf, int cc)
+ioq_peek(struct ioqueue *ioq, char *buf, int cc)
{
return ioqtobuf(ioq, buf, cc);
}
}
void
-ioq_append(struct ioqueue *ioq, s_char *buf, int cc)
+ioq_append(struct ioqueue *ioq, char *buf, int cc)
{
appendcc(ioq, buf, cc);
}
* no input is available
*/
int
-ioq_gets(struct ioqueue *ioq, s_char *buf, int cc)
+ioq_gets(struct ioqueue *ioq, char *buf, int cc)
{
int nbytes;
int actual;
actual = nbytes;
if (actual > cc - 1)
actual = cc - 1;
+ /* telnet terminates lines with "\r\n", get rid of \r */
+ if (actual > 0 && buf[actual-1] == '\r')
+ actual--;
buf[actual] = '\0';
/* remove the newline too */
removecc(ioq, nbytes + 1);
-#if defined(_WIN32)
- loc_StripDels(buf);
-#endif
}
return nbytes;
}
int
-ioq_puts(struct ioqueue *ioq, s_char *buf)
+ioq_puts(struct ioqueue *ioq, char *buf)
{
return appendcc(ioq, buf, strlen(buf));
}
-/*
- * all the rest are local to this module
- */
-
-
/*
* copy cc bytes from ioq to buf.
* this routine doesn't free memory; this is
* left for a higher level.
*/
-static
- int
-ioqtobuf(struct ioqueue *ioq, s_char *buf, int cc)
+static int
+ioqtobuf(struct ioqueue *ioq, char *buf, int cc)
{
struct io *io;
struct emp_qelem *qp;
struct emp_qelem *head;
- register int nbytes;
- register int nleft;
- register s_char *offset;
+ int nbytes, nleft;
+ char *offset;
nleft = cc;
offset = buf;
if (nbytes > 0) {
if (nleft < nbytes)
nbytes = nleft;
- bcopy(io->data + io->offset, offset, nbytes);
+ memcpy(offset, io->data + io->offset, nbytes);
offset += nbytes;
nleft -= nbytes;
}
* copy at most cc bytes from ioq to buf,
* terminating on the stop character.
*/
-static
- int
-ioqtocbuf(struct ioqueue *ioq, s_char *buf, int cc, register int stopc)
+static int
+ioqtocbuf(struct ioqueue *ioq, char *buf, int cc, int stopc)
{
- register int nbytes;
- register s_char *p;
- register int n;
+ int nbytes;
+ char *p;
+ int n;
struct io *io;
struct emp_qelem *qp;
struct emp_qelem *head;
* initialize an iovec to point at max bytes worth
* of data from the ioqueue.
*/
-#if !defined(_WIN32)
-static
- int
-ioqtoiov(struct ioqueue *ioq, struct iovec *iov, register int max)
+static int
+ioqtoiov(struct ioqueue *ioq, struct iovec *iov, int max)
{
struct io *io;
- register int cc;
- register int niov;
- register int len;
+ int cc, niov, len;
struct emp_qelem *qp;
cc = max;
}
return niov;
}
-#endif
/*
* append a buffer to the end of the ioq.
*/
-static
- int
-appendcc(struct ioqueue *ioq, s_char *buf, int cc)
+static int
+appendcc(struct ioqueue *ioq, char *buf, int cc)
{
struct io *io;
int len;
- s_char *ptr;
+ char *ptr;
int avail;
/* determine if any space is left */
if (avail > 0) {
/* append to existing buffer */
len = cc > avail ? avail : cc;
- bcopy(buf, io->data + io->nbytes, len);
+ memcpy(io->data + io->nbytes, buf, len);
io->nbytes += len;
ioq->cc += len;
if (avail < cc)
/* create a new buffer, minimum bufsize bytes */
len = cc > ioq->bufsize ? cc : ioq->bufsize;
ptr = malloc(len);
- bcopy(buf, ptr, cc);
- io = (struct io *)malloc(sizeof(struct io));
+ memcpy(ptr, buf, cc);
+ io = malloc(sizeof(struct io));
io->nbytes = cc;
io->size = len;
io->offset = 0;
* free memory, dequeue io elements
* which are no longer used.
*/
-static
- int
-removecc(struct ioqueue *ioq, register int cc)
+static int
+removecc(struct ioqueue *ioq, int cc)
{
struct io *io;
struct emp_qelem *qp;
- register int nbytes;
- register int there;
- register int remain;
+ int nbytes, there, remain;
nbytes = 0;
remain = cc;
there = io->nbytes - io->offset;
if (there < 0) {
/* error */
- (void)emp_remque(&io->queue);
- (void)free((s_char *)io);
+ emp_remque(&io->queue);
+ free(io);
continue;
}
if (remain >= there) {
/* not enough or exact; free entry */
nbytes += there;
remain -= there;
- (void)emp_remque(&io->queue);
- (void)free(io->data);
- (void)free((s_char *)io);
+ emp_remque(&io->queue);
+ free(io->data);
+ free(io);
} else {
/* too much; increment offset */
io->offset += remain;
ioq->cc -= nbytes;
return nbytes;
}
-
-#if defined(_WIN32)
-/*
- * Make an (output) buffer up to the
- * maximum size of the buffer.
- *
- * We don't free the bytes...
- */
-int
-ioq_makebuf(struct ioqueue *ioq, char *pBuf, int nBufLen)
-{
- struct io *io;
- struct emp_qelem *qp;
- struct emp_qelem *head;
- int nbytes;
- int nleft;
- int ncopied;
- s_char *offset;
-
- ncopied = 0;
- nleft = nBufLen;
- offset = pBuf;
- head = &ioq->list.queue;
-
- for (qp = head->q_forw; (qp != head) && (nleft > 0); qp = qp->q_forw) {
- io = (struct io *)qp;
- nbytes = io->nbytes - io->offset;
- if (nbytes < 0) {
- /* Paranoid check for bad buffer. */
- continue;
- }
-
- /* too many bytes, wait till next time. */
- if (nbytes > nleft)
- break;
-
- bcopy(io->data + io->offset, offset, nbytes);
- offset += nbytes;
- nleft -= nbytes;
- ncopied += nbytes;
- }
- return ncopied;
-}
-#endif /* _WIN32 */
-
-#if defined(_WIN32)
-/*
- * Remove backspaces and DELs from the buffer.
- *
- * Why? Because I got tired of telneting into the
- * server and having to type perfectly...
- */
-static void
-loc_StripDels(char *pBuf)
-{
- char *cp;
- char *dp;
- char *sp;
-
- for (cp = pBuf; *cp;) {
- /* Remove Backspace and DEL */
- if (*cp == '\b' || *cp == '\x8F') {
- if (cp == pBuf)
- dp = cp;
- else
- dp = cp - 1;
- sp = cp + 1;
- while (*sp)
- *dp++ = *sp++;
- *dp = 0;
- } else
- cp++;
- }
-}
-#endif
projects / empserver / blobdiff