* Sebastian Hammer, Adam Dickmeiss
*
* $Log: tcpip.c,v $
- * Revision 1.1 1995-06-14 09:58:20 quinn
+ * Revision 1.11 1996-02-23 10:00:39 quinn
+ * WAIS Work
+ *
+ * Revision 1.10 1996/02/20 12:52:11 quinn
+ * WAIS protocol support.
+ *
+ * Revision 1.9 1996/02/10 12:23:11 quinn
+ * Enablie inetd operations fro TCP/IP stack
+ *
+ * Revision 1.8 1995/11/01 13:54:27 quinn
+ * Minor adjustments
+ *
+ * Revision 1.7 1995/10/30 12:41:16 quinn
+ * Added hostname lookup for server.
+ *
+ * Revision 1.6 1995/09/29 17:12:00 quinn
+ * Smallish
+ *
+ * Revision 1.5 1995/09/29 17:01:48 quinn
+ * More Windows work
+ *
+ * Revision 1.4 1995/09/28 10:12:26 quinn
+ * Windows-support changes
+ *
+ * Revision 1.3 1995/09/27 15:02:45 quinn
+ * Modified function heads & prototypes.
+ *
+ * Revision 1.2 1995/06/15 12:30:06 quinn
+ * Added @ as hostname alias for INADDR ANY.
+ *
+ * Revision 1.1 1995/06/14 09:58:20 quinn
* Renamed yazlib to comstack.
*
* Revision 1.20 1995/05/16 08:51:16 quinn
#include <comstack.h>
#include <tcpip.h>
+
+#ifndef WINDOWS
#include <sys/time.h>
+#endif
int tcpip_close(COMSTACK h);
int tcpip_put(COMSTACK h, char *buf, int size);
int tcpip_bind(COMSTACK h, void *address, int mode);
int tcpip_listen(COMSTACK h, char *addrp, int *addrlen);
COMSTACK tcpip_accept(COMSTACK h);
+char *tcpip_addrstr(COMSTACK h);
-int completeBER(unsigned char *buf, int len);
+/*
+ * Determine length/completeness of incoming packages
+ */
+int completeBER(unsigned char *buf, int len); /* from the ODR module */
+int completeWAIS(unsigned char *buf, int len); /* from waislen.c */
#ifdef TRACE_TCPIP
#define TRC(x) x
#define TRC(X)
#endif
+static int initialized = 0;
+
typedef struct tcpip_state
{
char *altbuf; /* alternate buffer for surplus data */
- int altsize; /* size as malloced */
+ int altsize; /* size as xmalloced */
int altlen; /* length of data or 0 if none */
int written; /* -1 if we aren't writing */
int towrite; /* to verify against user input */
+ int (*complete)(unsigned char *buf, int len); /* length/completeness */
} tcpip_state;
-COMSTACK tcpip_type(int blocking, int protocol)
+/*
+ * This function is always called through the cs_create() macro.
+ * s >= 0: socket has already been established for us.
+ */
+COMSTACK tcpip_type(int s, int blocking, int protocol)
{
COMSTACK p;
- struct protoent *proto;
tcpip_state *state;
- int s;
-
- if (!(proto = getprotobyname("tcp")))
- return 0;
- if ((s = socket(AF_INET, SOCK_STREAM, proto->p_proto)) < 0)
- return 0;
- if (!(p = malloc(sizeof(struct comstack))))
- return 0;
- if (!(state = p->private = malloc(sizeof(tcpip_state))))
- return 0;
+ int new_socket;
+#ifdef WINDOWS
+ unsigned long tru = 1;
+#else
+ struct protoent *proto;
+#endif
+
+ if (!initialized)
+ {
+#ifdef WINDOWS
+ WORD requested;
+ WSADATA wd;
+
+ requested = MAKEWORD(1, 1);
+ if (WSAStartup(requested, &wd))
+ return 0;
+#endif
+ initialized = 1;
+ }
+
+ if (s < 0)
+ {
+#ifndef WINDOWS
+ if (!(proto = getprotobyname("tcp")))
+ return 0;
+ if ((s = socket(AF_INET, SOCK_STREAM, proto->p_proto)) < 0)
+#else
+ if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+#endif
+ return 0;
+ new_socket = 1;
+ }
+ else
+ new_socket = 0;
+ if (!(p = xmalloc(sizeof(struct comstack))))
+ return 0;
+ if (!(state = p->private = xmalloc(sizeof(tcpip_state))))
+ return 0;
+
+#ifdef WINDOWS
+ if (!(p->blocking = blocking) && ioctlsocket(s, FIONBIO, &tru) < 0)
+#else
if (!(p->blocking = blocking) && fcntl(s, F_SETFL, O_NONBLOCK) < 0)
- return 0;
+#endif
+ return 0;
p->iofile = s;
p->type = tcpip_type;
p->f_bind = tcpip_bind;
p->f_listen = tcpip_listen;
p->f_accept = tcpip_accept;
+ p->f_addrstr = tcpip_addrstr;
- p->state = CS_UNBND;
+ p->state = new_socket ? CS_UNBND : CS_IDLE; /* state of line */
p->event = CS_NONE;
- p->errno = 0;
+ p->cerrno = 0;
p->stackerr = 0;
state->altbuf = 0;
state->altsize = state->altlen = 0;
state->towrite = state->written = -1;
+ if (protocol == PROTO_WAIS)
+ state->complete = completeWAIS;
+ else
+ state->complete = completeBER;
p->timeout = COMSTACK_DEFAULT_TIMEOUT;
TRC(fprintf(stderr, "Created new TCPIP comstack\n"));
strcpy(buf, str);
if ((p = strchr(buf, ':')))
{
- *p = 0;
- port = atoi(p + 1);
+ *p = 0;
+ port = atoi(p + 1);
}
add.sin_port = htons(port);
- if ((hp = gethostbyname(buf)))
- memcpy(&add.sin_addr.s_addr, *hp->h_addr_list, sizeof(struct in_addr));
+ if (!strcmp("@", buf))
+ add.sin_addr.s_addr = INADDR_ANY;
+ else if ((hp = gethostbyname(buf)))
+ memcpy(&add.sin_addr.s_addr, *hp->h_addr_list, sizeof(struct in_addr));
else if ((tmpadd = (unsigned) inet_addr(buf)) != 0)
- memcpy(&add.sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
+ memcpy(&add.sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
else
- return 0;
+ return 0;
return &add;
}
{
tcpip_state *sp = h->private;
- return sp->altlen && completeBER((unsigned char *) sp->altbuf, sp->altlen);
+ return sp->altlen && (*sp->complete)((unsigned char *) sp->altbuf,
+ sp->altlen);
}
/*
- * connect(2) will block - nothing we can do short of doing weird things
- * like spawning subprocesses or threading or some weird junk like that.
+ * connect(2) will block (sometimes) - nothing we can do short of doing
+ * weird things like spawning subprocesses or threading or some weird junk
+ * like that.
*/
int tcpip_connect(COMSTACK h, void *address)
{
TRC(fprintf(stderr, "tcpip_connect\n"));
if (connect(h->iofile, (struct sockaddr *) add, sizeof(*add)) < 0)
{
- if (errno == EINPROGRESS)
- return 1;
- return -1;
+#ifdef WINDOWS
+ if (WSAGetLastError() == WSAEWOULDBLOCK)
+#else
+ if (errno == EINPROGRESS)
+#endif
+ return 1;
+ return -1;
}
h->state = CS_DATAXFER;
return 0;
int tcpip_bind(COMSTACK h, void *address, int mode)
{
struct sockaddr *addr = address;
- int one = 1;
+ unsigned long one = 1;
TRC(fprintf(stderr, "tcpip_bind\n"));
if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)
{
- h->errno = CSYSERR;
- return -1;
+ h->cerrno = CSYSERR;
+ return -1;
}
if (bind(h->iofile, addr, sizeof(struct sockaddr_in)) < 0)
{
- h->errno = CSYSERR;
- return -1;
+ h->cerrno = CSYSERR;
+ return -1;
}
if (mode == CS_SERVER && listen(h->iofile, 3) < 0)
{
- h->errno = CSYSERR;
- return -1;
+ h->cerrno = CSYSERR;
+ return -1;
}
h->state = CS_IDLE;
return 0;
TRC(fprintf(stderr, "tcpip_listen\n"));
if (h->state != CS_IDLE)
{
- h->errno = CSOUTSTATE;
- return -1;
+ h->cerrno = CSOUTSTATE;
+ return -1;
}
if ((h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len)) < 0)
{
- if (errno == EWOULDBLOCK)
- h->errno = CSNODATA;
- else
- h->errno = CSYSERR;
- return -1;
+#ifdef WINDOWS
+ if (WSAGetLastError() == WSAEWOULDBLOCK)
+#else
+ if (errno == EWOULDBLOCK)
+#endif
+
+ h->cerrno = CSNODATA;
+ else
+ h->cerrno = CSYSERR;
+ return -1;
}
if (addrlen && *addrlen > sizeof(struct sockaddr_in))
- memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
+ memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
else if (addrlen)
- *addrlen = 0;
+ *addrlen = 0;
h->state = CS_INCON;
return 0;
}
COMSTACK tcpip_accept(COMSTACK h)
{
COMSTACK new;
- tcpip_state *state;
+ tcpip_state *state, *st = h->private;
+#ifdef WINDOWS
+ unsigned long tru = 1;
+#endif
TRC(fprintf(stderr, "tcpip_accept\n"));
if (h->state != CS_INCON)
{
- h->errno = CSOUTSTATE;
- return 0;
+ h->cerrno = CSOUTSTATE;
+ return 0;
}
- if (!(new = malloc(sizeof(*new))))
+ if (!(new = xmalloc(sizeof(*new))))
{
- h->errno = CSYSERR;
- return 0;
+ h->cerrno = CSYSERR;
+ return 0;
}
memcpy(new, h, sizeof(*h));
new->iofile = h->newfd;
- if (!(state = new->private = malloc(sizeof(tcpip_state))))
+ if (!(state = new->private = xmalloc(sizeof(tcpip_state))))
{
- h->errno = CSYSERR;
- return 0;
+ h->cerrno = CSYSERR;
+ return 0;
}
+#ifdef WINDOWS
+ if (!new->blocking && ioctlsocket(new->iofile, FIONBIO, &tru) < 0)
+#else
if (!new->blocking && fcntl(new->iofile, F_SETFL, O_NONBLOCK) < 0)
- return 0;
+#endif
+ return 0;
state->altbuf = 0;
state->altsize = state->altlen = 0;
state->towrite = state->written = -1;
+ state->complete = st->complete;
new->state = CS_DATAXFER;
h->state = CS_IDLE;
return new;
TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
if (sp->altlen) /* switch buffers */
{
- TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
- (unsigned) sp->altbuf));
- tmpc = *buf;
- tmpi = *bufsize;
- *buf = sp->altbuf;
- *bufsize = sp->altsize;
- hasread = sp->altlen;
- sp->altlen = 0;
- sp->altbuf = tmpc;
- sp->altsize = tmpi;
+ TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
+ (unsigned) sp->altbuf));
+ tmpc = *buf;
+ tmpi = *bufsize;
+ *buf = sp->altbuf;
+ *bufsize = sp->altsize;
+ hasread = sp->altlen;
+ sp->altlen = 0;
+ sp->altbuf = tmpc;
+ sp->altsize = tmpi;
}
- while (!(berlen = completeBER((unsigned char *)*buf, hasread)))
+ while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
{
- if (!*bufsize)
- {
- if (!(*buf = malloc(*bufsize = CS_TCPIP_BUFCHUNK)))
- return -1;
- }
- else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
- if (!(*buf = realloc(*buf, *bufsize *= 2)))
- return -1;
- if ((res = read(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK)) < 0)
- if (errno == EWOULDBLOCK)
- break;
- else
- return -1;
- if (!res)
- return 0;
- hasread += res;
- TRC(fprintf(stderr, " res=%d, hasread=%d\n", res, hasread));
+ if (!*bufsize)
+ {
+ if (!(*buf = xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
+ return -1;
+ }
+ else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
+ if (!(*buf =xrealloc(*buf, *bufsize *= 2)))
+ return -1;
+ if ((res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0)) < 0)
+#ifdef WINDOWS
+ if (WSAGetLastError() == WSAEWOULDBLOCK)
+#else
+ if (errno == EWOULDBLOCK)
+#endif
+ break;
+ else
+ return -1;
+ if (!res)
+ return 0;
+ hasread += res;
+ TRC(fprintf(stderr, " res=%d, hasread=%d\n", res, hasread));
}
TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
- hasread, berlen));
+ hasread, berlen));
/* move surplus buffer (or everything if we didn't get a BER rec.) */
if (hasread > berlen)
{
- tomove = req = hasread - berlen;
- rest = tomove % CS_TCPIP_BUFCHUNK;
- if (rest)
- req += CS_TCPIP_BUFCHUNK - rest;
- if (!sp->altbuf)
- {
- if (!(sp->altbuf = malloc(sp->altsize = req)))
- return -1;
- } else if (sp->altsize < req)
- if (!(sp->altbuf = realloc(sp->altbuf, sp->altsize = req)))
- return -1;
- TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
- (unsigned) sp->altbuf));
- memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
+ tomove = req = hasread - berlen;
+ rest = tomove % CS_TCPIP_BUFCHUNK;
+ if (rest)
+ req += CS_TCPIP_BUFCHUNK - rest;
+ if (!sp->altbuf)
+ {
+ if (!(sp->altbuf = xmalloc(sp->altsize = req)))
+ return -1;
+ } else if (sp->altsize < req)
+ if (!(sp->altbuf =xrealloc(sp->altbuf, sp->altsize = req)))
+ return -1;
+ TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
+ (unsigned) sp->altbuf));
+ memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
}
if (berlen < CS_TCPIP_BUFCHUNK - 1)
- *(*buf + berlen) = '\0';
+ *(*buf + berlen) = '\0';
return berlen ? berlen : 1;
}
TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
if (state->towrite < 0)
{
- state->towrite = size;
- state->written = 0;
+ state->towrite = size;
+ state->written = 0;
}
else if (state->towrite != size)
{
- h->errno = CSWRONGBUF;
- return -1;
+ h->cerrno = CSWRONGBUF;
+ return -1;
}
while (state->towrite > state->written)
{
- if ((res = write(h->iofile, buf + state->written, size -
- state->written)) < 0)
- {
- if (errno == EAGAIN)
- {
- TRC(fprintf(stderr, " Flow control stop\n"));
- return 1;
- }
- h->errno = CSYSERR;
- return -1;
- }
- state->written += res;
- TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
- res, state->written, size));
+ if ((res = send(h->iofile, buf + state->written, size -
+ state->written, 0)) < 0)
+ {
+#ifdef WINDOWS
+ if (WSAGetLastError() == WSAEWOULDBLOCK)
+#else
+ if (errno == EAGAIN)
+#endif
+ {
+ TRC(fprintf(stderr, " Flow control stop\n"));
+ return 1;
+ }
+ h->cerrno = CSYSERR;
+ return -1;
+ }
+ state->written += res;
+ TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
+ res, state->written, size));
}
state->towrite = state->written = -1;
TRC(fprintf(stderr, " Ok\n"));
TRC(fprintf(stderr, "tcpip_close\n"));
close(h->iofile);
if (sp->altbuf)
- free(sp->altbuf);
- free(sp);
- free(h);
+ xfree(sp->altbuf);
+ xfree(sp);
+ xfree(h);
return 0;
}
+
+char *tcpip_addrstr(COMSTACK h)
+{
+ struct sockaddr_in addr;
+ static char buf[64];
+ char *r;
+ int len;
+ struct hostent *host;
+
+ len = sizeof(addr);
+ if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
+ {
+ h->cerrno = CSYSERR;
+ return 0;
+ }
+ if ((host = gethostbyaddr((char*)&addr.sin_addr, sizeof(addr.sin_addr),
+ AF_INET)))
+ r = (char*) host->h_name;
+ else
+ r = inet_ntoa(addr.sin_addr);
+ sprintf(buf, "tcp:%s", r);
+ return buf;
+}
projects / yaz-moved-to-github.git / blobdiff