-/*
- * Copyright (c) 1995, Index Data
- * See the file LICENSE for details.
- * Sebastian Hammer, Adam Dickmeiss
- *
+/*\r
+ * Copyright (c) 1995, Index Data\r
+ * See the file LICENSE for details.\r
+ * Sebastian Hammer, Adam Dickmeiss\r
+ *\r
* $Log: tcpip.c,v $
- * 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
- * License, documentation, and memory fixes
- *
- * Revision 1.19 1995/04/10 10:24:08 quinn
- * Some bug-fixes.
- *
- * Revision 1.18 1995/03/30 13:29:27 quinn
- * Added REUSEADDR in tcpip_bind
- *
- * Revision 1.17 1995/03/27 08:36:10 quinn
- * Some work on nonblocking operation in xmosi.c and rfct.c.
- * Added protocol parameter to cs_create()
- *
- * Revision 1.16 1995/03/21 15:53:41 quinn
- * Added rcvconnect
- *
- * Revision 1.15 1995/03/21 12:31:27 quinn
- * Added check for EINPROGRESS on connect.
- *
- * Revision 1.14 1995/03/20 09:47:21 quinn
- * Added server-side support to xmosi.c
- * Fixed possible problems in rfct
- * Other little mods
- *
- * Revision 1.13 1995/03/15 16:15:13 adam
- * Removed p_write.
- *
- * Revision 1.12 1995/03/15 15:36:27 quinn
- * Mods to support nonblocking I/O
- *
- * Revision 1.11 1995/03/15 08:37:57 quinn
- * Now we're pretty much set for nonblocking I/O.
- *
- * Revision 1.10 1995/03/14 17:00:07 quinn
- * Bug-fixes - added tracing info to tcpip.c
- *
- * Revision 1.9 1995/03/14 10:28:42 quinn
- * Adding server-side support to tcpip.c and fixing bugs in nonblocking I/O
- *
- * Revision 1.8 1995/03/10 14:22:50 quinn
- * Removed debug output.
- *
- * Revision 1.7 1995/03/10 11:44:59 quinn
- * Fixes and debugging
- *
- * Revision 1.6 1995/03/07 10:26:55 quinn
- * Initialized type field in the comstacks.
- *
- * Revision 1.5 1995/02/14 20:40:07 quinn
- * Various stuff.
- *
- * Revision 1.4 1995/02/14 11:54:49 quinn
- * Beginning to add full CCL.
- *
- * Revision 1.3 1995/02/10 18:58:10 quinn
- * Fixed tcpip_get (formerly tcpip_read).
- * Turned tst (cli) into a proper, event-driven thingy.
- *
- * Revision 1.2 1995/02/10 15:55:47 quinn
- * Small things.
- *
- * Revision 1.1 1995/02/09 15:51:52 quinn
- * Works better now.
- *
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-
-#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_get(COMSTACK h, char **buf, int *bufsize);
-int tcpip_connect(COMSTACK h, void *address);
-int tcpip_more(COMSTACK h);
-int tcpip_rcvconnect(COMSTACK h);
-int tcpip_bind(COMSTACK h, void *address, int mode);
-int tcpip_listen(COMSTACK h, char *addrp, int *addrlen);
-COMSTACK tcpip_accept(COMSTACK h);
-
-int completeBER(unsigned char *buf, int len);
-
-#ifdef TRACE_TCPIP
-#define TRC(x) x
-#else
-#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 altlen; /* length of data or 0 if none */
-
- int written; /* -1 if we aren't writing */
- int towrite; /* to verify against user input */
-} tcpip_state;
-
-COMSTACK MDF tcpip_type(int blocking, int protocol)
-{
- COMSTACK p;
- struct protoent *proto;
- tcpip_state *state;
- int s, tru = 1;
-
- if (!initialized)
- {
-#ifdef WINDOWS
- WORD requested;
- WSADATA wd;
-
- requested = MAKEWORD(1, 1);
- if (WSAStartup(requested, &wd))
- return 0;
-#endif
- initialized = 1;
- }
-
-#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;
- if (!(p = malloc(sizeof(struct comstack))))
- return 0;
- if (!(state = p->private = malloc(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)
-#endif
- return 0;
-
- p->iofile = s;
- p->type = tcpip_type;
- p->protocol = protocol;
-
- p->f_connect = tcpip_connect;
- p->f_rcvconnect = tcpip_rcvconnect;
- p->f_get = tcpip_get;
- p->f_put = tcpip_put;
- p->f_close = tcpip_close;
- p->f_more = tcpip_more;
- p->f_bind = tcpip_bind;
- p->f_listen = tcpip_listen;
- p->f_accept = tcpip_accept;
-
- p->state = CS_UNBND;
- p->event = CS_NONE;
- p->cerrno = 0;
- p->stackerr = 0;
-
- state->altbuf = 0;
- state->altsize = state->altlen = 0;
- state->towrite = state->written = -1;
-
- p->timeout = COMSTACK_DEFAULT_TIMEOUT;
- TRC(fprintf(stderr, "Created new TCPIP comstack\n"));
-
- return p;
-}
-
-struct sockaddr_in MDF *tcpip_strtoaddr(const char *str)
-{
- static struct sockaddr_in add;
- struct hostent *hp;
- char *p, buf[512];
- short int port = 210;
- unsigned tmpadd;
-
- TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
- add.sin_family = AF_INET;
- strcpy(buf, str);
- if ((p = strchr(buf, ':')))
- {
- *p = 0;
- port = atoi(p + 1);
- }
- add.sin_port = htons(port);
- 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));
- else
- return 0;
- return &add;
-}
-
-int tcpip_more(COMSTACK h)
-{
- tcpip_state *sp = h->private;
-
- return sp->altlen && completeBER((unsigned char *) sp->altbuf, sp->altlen);
-}
-
-/*
- * 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)
-{
- struct sockaddr_in *add = address;
-
- TRC(fprintf(stderr, "tcpip_connect\n"));
- if (connect(h->iofile, (struct sockaddr *) add, sizeof(*add)) < 0)
- {
-#ifdef WINDOWS
- if (errno == WSAEWOULDBLOCK)
-#else
- if (errno == EINPROGRESS)
-#endif
- return 1;
- return -1;
- }
- h->state = CS_DATAXFER;
- return 0;
-}
-
-/*
- * nop
- */
-int tcpip_rcvconnect(COMSTACK h)
-{
- TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
- return 0;
-}
-
-int tcpip_bind(COMSTACK h, void *address, int mode)
-{
- struct sockaddr *addr = address;
- int one = 1;
-
- TRC(fprintf(stderr, "tcpip_bind\n"));
- if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)
- {
- h->cerrno = CSYSERR;
- return -1;
- }
- if (bind(h->iofile, addr, sizeof(struct sockaddr_in)) < 0)
- {
- h->cerrno = CSYSERR;
- return -1;
- }
- if (mode == CS_SERVER && listen(h->iofile, 3) < 0)
- {
- h->cerrno = CSYSERR;
- return -1;
- }
- h->state = CS_IDLE;
- return 0;
-}
-
-int tcpip_listen(COMSTACK h, char *raddr, int *addrlen)
-{
- struct sockaddr_in addr;
- int len = sizeof(addr);
-
- TRC(fprintf(stderr, "tcpip_listen\n"));
- if (h->state != CS_IDLE)
- {
- h->cerrno = CSOUTSTATE;
- return -1;
- }
- if ((h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len)) < 0)
- {
-#ifdef WINDOWS
- if (errno == 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));
- else if (addrlen)
- *addrlen = 0;
- h->state = CS_INCON;
- return 0;
-}
-
-COMSTACK tcpip_accept(COMSTACK h)
-{
- COMSTACK new;
- tcpip_state *state;
-
- TRC(fprintf(stderr, "tcpip_accept\n"));
- if (h->state != CS_INCON)
- {
- h->cerrno = CSOUTSTATE;
- return 0;
- }
- if (!(new = malloc(sizeof(*new))))
- {
- h->cerrno = CSYSERR;
- return 0;
- }
- memcpy(new, h, sizeof(*h));
- new->iofile = h->newfd;
- if (!(state = new->private = malloc(sizeof(tcpip_state))))
- {
- h->cerrno = CSYSERR;
- return 0;
- }
-#ifdef WINDOWS
- if (!new->blocking && ioctlsocket(s, FIONBIO, &tru) < 0)
-#else
- if (!new->blocking && fcntl(new->iofile, F_SETFL, O_NONBLOCK) < 0)
-#endif
- return 0;
- state->altbuf = 0;
- state->altsize = state->altlen = 0;
- state->towrite = state->written = -1;
- new->state = CS_DATAXFER;
- h->state = CS_IDLE;
- return new;
-}
-
-#define CS_TCPIP_BUFCHUNK 4096
-
-/*
- * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
- * 0=connection closed.
- */
-int tcpip_get(COMSTACK h, char **buf, int *bufsize)
-{
- tcpip_state *sp = h->private;
- char *tmpc;
- int tmpi, berlen, rest, req, tomove;
- int hasread = 0, res;
-
- 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;
- }
- while (!(berlen = completeBER((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 = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0)) < 0)
-#ifdef WINDOWS
- if (errno == 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));
- /* 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);
- }
- if (berlen < CS_TCPIP_BUFCHUNK - 1)
- *(*buf + berlen) = '\0';
- return berlen ? berlen : 1;
-}
-
-/*
- * Returns 1, 0 or -1
- * In nonblocking mode, you must call again with same buffer while
- * return value is 1.
- */
-int tcpip_put(COMSTACK h, char *buf, int size)
-{
- int res;
- struct tcpip_state *state = h->private;
-
- TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
- if (state->towrite < 0)
- {
- state->towrite = size;
- state->written = 0;
- }
- else if (state->towrite != size)
- {
- h->cerrno = CSWRONGBUF;
- return -1;
- }
- while (state->towrite > state->written)
- {
- if ((res = send(h->iofile, buf + state->written, size -
- state->written, 0)) < 0)
- {
-#ifdef WINDOWS
- if (errno == 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"));
- return 0;
-}
-
-int tcpip_close(COMSTACK h)
-{
- tcpip_state *sp = h->private;
-
- TRC(fprintf(stderr, "tcpip_close\n"));
- close(h->iofile);
- if (sp->altbuf)
- free(sp->altbuf);
- free(sp);
- free(h);
- return 0;
-}
+ * Revision 1.5 1995-09-29 17:01:48 quinn
+ * More Windows work
+ *\r
+ * Revision 1.4 1995/09/28 10:12:26 quinn\r
+ * Windows-support changes\r
+ *\r
+ * Revision 1.3 1995/09/27 15:02:45 quinn\r
+ * Modified function heads & prototypes.\r
+ *\r
+ * Revision 1.2 1995/06/15 12:30:06 quinn\r
+ * Added @ as hostname alias for INADDR ANY.\r
+ *\r
+ * Revision 1.1 1995/06/14 09:58:20 quinn\r
+ * Renamed yazlib to comstack.\r
+ *\r
+ * Revision 1.20 1995/05/16 08:51:16 quinn\r
+ * License, documentation, and memory fixes\r
+ *\r
+ * Revision 1.19 1995/04/10 10:24:08 quinn\r
+ * Some bug-fixes.\r
+ *\r
+ * Revision 1.18 1995/03/30 13:29:27 quinn\r
+ * Added REUSEADDR in tcpip_bind\r
+ *\r
+ * Revision 1.17 1995/03/27 08:36:10 quinn\r
+ * Some work on nonblocking operation in xmosi.c and rfct.c.\r
+ * Added protocol parameter to cs_create()\r
+ *\r
+ * Revision 1.16 1995/03/21 15:53:41 quinn\r
+ * Added rcvconnect\r
+ *\r
+ * Revision 1.15 1995/03/21 12:31:27 quinn\r
+ * Added check for EINPROGRESS on connect.\r
+ *\r
+ * Revision 1.14 1995/03/20 09:47:21 quinn\r
+ * Added server-side support to xmosi.c\r
+ * Fixed possible problems in rfct\r
+ * Other little mods\r
+ *\r
+ * Revision 1.13 1995/03/15 16:15:13 adam\r
+ * Removed p_write.\r
+ *\r
+ * Revision 1.12 1995/03/15 15:36:27 quinn\r
+ * Mods to support nonblocking I/O\r
+ *\r
+ * Revision 1.11 1995/03/15 08:37:57 quinn\r
+ * Now we're pretty much set for nonblocking I/O.\r
+ *\r
+ * Revision 1.10 1995/03/14 17:00:07 quinn\r
+ * Bug-fixes - added tracing info to tcpip.c\r
+ *\r
+ * Revision 1.9 1995/03/14 10:28:42 quinn\r
+ * Adding server-side support to tcpip.c and fixing bugs in nonblocking I/O\r
+ *\r
+ * Revision 1.8 1995/03/10 14:22:50 quinn\r
+ * Removed debug output.\r
+ *\r
+ * Revision 1.7 1995/03/10 11:44:59 quinn\r
+ * Fixes and debugging\r
+ *\r
+ * Revision 1.6 1995/03/07 10:26:55 quinn\r
+ * Initialized type field in the comstacks.\r
+ *\r
+ * Revision 1.5 1995/02/14 20:40:07 quinn\r
+ * Various stuff.\r
+ *\r
+ * Revision 1.4 1995/02/14 11:54:49 quinn\r
+ * Beginning to add full CCL.\r
+ *\r
+ * Revision 1.3 1995/02/10 18:58:10 quinn\r
+ * Fixed tcpip_get (formerly tcpip_read).\r
+ * Turned tst (cli) into a proper, event-driven thingy.\r
+ *\r
+ * Revision 1.2 1995/02/10 15:55:47 quinn\r
+ * Small things.\r
+ *\r
+ * Revision 1.1 1995/02/09 15:51:52 quinn\r
+ * Works better now.\r
+ *\r
+ */\r
+\r
+#include <stdio.h>\r
+#include <string.h>\r
+#include <stdlib.h>\r
+#include <unistd.h>\r
+#include <errno.h>\r
+#include <fcntl.h>\r
+\r
+#include <comstack.h>\r
+#include <tcpip.h>\r
+\r
+#ifndef WINDOWS\r
+#include <sys/time.h>\r
+#endif\r
+\r
+int tcpip_close(COMSTACK h);\r
+int tcpip_put(COMSTACK h, char *buf, int size);\r
+int tcpip_get(COMSTACK h, char **buf, int *bufsize);\r
+int tcpip_connect(COMSTACK h, void *address);\r
+int tcpip_more(COMSTACK h);\r
+int tcpip_rcvconnect(COMSTACK h);\r
+int tcpip_bind(COMSTACK h, void *address, int mode);\r
+int tcpip_listen(COMSTACK h, char *addrp, int *addrlen);\r
+COMSTACK tcpip_accept(COMSTACK h);\r
+\r
+int completeBER(unsigned char *buf, int len);\r
+\r
+#ifdef TRACE_TCPIP\r
+#define TRC(x) x\r
+#else\r
+#define TRC(X)\r
+#endif\r
+\r
+static int initialized = 0;\r
+\r
+typedef struct tcpip_state\r
+{\r
+ char *altbuf; /* alternate buffer for surplus data */\r
+ int altsize; /* size as malloced */\r
+ int altlen; /* length of data or 0 if none */\r
+\r
+ int written; /* -1 if we aren't writing */\r
+ int towrite; /* to verify against user input */\r
+} tcpip_state;\r
+\r
+COMSTACK MDF tcpip_type(int blocking, int protocol)\r
+{\r
+ COMSTACK p;\r
+ tcpip_state *state;\r
+ int s;\r
+#ifdef WINDOWS\r
+ unsigned long tru = 1;\r
+#else\r
+ struct protoent *proto;\r
+#endif\r
+\r
+ if (!initialized)\r
+ {\r
+#ifdef WINDOWS\r
+ WORD requested;\r
+ WSADATA wd;\r
+\r
+ requested = MAKEWORD(1, 1);\r
+ if (WSAStartup(requested, &wd))\r
+ return 0;\r
+#endif\r
+ initialized = 1;\r
+ }\r
+\r
+#ifndef WINDOWS\r
+ if (!(proto = getprotobyname("tcp")))\r
+ return 0;\r
+ if ((s = socket(AF_INET, SOCK_STREAM, proto->p_proto)) < 0)\r
+#else\r
+ if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)\r
+#endif\r
+ return 0;\r
+ if (!(p = malloc(sizeof(struct comstack))))\r
+ return 0;\r
+ if (!(state = p->private = malloc(sizeof(tcpip_state))))\r
+ return 0;\r
+#ifdef WINDOWS\r
+ if (!(p->blocking = blocking) && ioctlsocket(s, FIONBIO, &tru) < 0)\r
+#else\r
+ if (!(p->blocking = blocking) && fcntl(s, F_SETFL, O_NONBLOCK) < 0)\r
+#endif\r
+ return 0;\r
+ p->iofile = s;\r
+ p->type = tcpip_type;\r
+ p->protocol = protocol;\r
+\r
+ p->f_connect = tcpip_connect;\r
+ p->f_rcvconnect = tcpip_rcvconnect;\r
+ p->f_get = tcpip_get;\r
+ p->f_put = tcpip_put;\r
+ p->f_close = tcpip_close;\r
+ p->f_more = tcpip_more;\r
+ p->f_bind = tcpip_bind;\r
+ p->f_listen = tcpip_listen;\r
+ p->f_accept = tcpip_accept;\r
+\r
+ p->state = CS_UNBND;\r
+ p->event = CS_NONE;\r
+ p->cerrno = 0;\r
+ p->stackerr = 0;\r
+\r
+ state->altbuf = 0;\r
+ state->altsize = state->altlen = 0;\r
+ state->towrite = state->written = -1;\r
+\r
+ p->timeout = COMSTACK_DEFAULT_TIMEOUT;\r
+ TRC(fprintf(stderr, "Created new TCPIP comstack\n"));\r
+\r
+ return p;\r
+}\r
+\r
+struct sockaddr_in MDF *tcpip_strtoaddr(const char *str)\r
+{\r
+ static struct sockaddr_in add;\r
+ struct hostent *hp;\r
+ char *p, buf[512];\r
+ short int port = 210;\r
+ unsigned tmpadd;\r
+\r
+ TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));\r
+ add.sin_family = AF_INET;\r
+ strcpy(buf, str);\r
+ if ((p = strchr(buf, ':')))\r
+ {\r
+ *p = 0;\r
+ port = atoi(p + 1);\r
+ }\r
+ add.sin_port = htons(port);\r
+ if (!strcmp("@", buf))\r
+ add.sin_addr.s_addr = INADDR_ANY;\r
+ else if ((hp = gethostbyname(buf)))\r
+ memcpy(&add.sin_addr.s_addr, *hp->h_addr_list, sizeof(struct in_addr));\r
+ else if ((tmpadd = (unsigned) inet_addr(buf)) != 0)\r
+ memcpy(&add.sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));\r
+ else\r
+ return 0;\r
+ return &add;\r
+}\r
+\r
+int tcpip_more(COMSTACK h)\r
+{\r
+ tcpip_state *sp = h->private;\r
+\r
+ return sp->altlen && completeBER((unsigned char *) sp->altbuf, sp->altlen);\r
+}\r
+\r
+/*\r
+ * connect(2) will block (sometimes) - nothing we can do short of doing\r
+ * weird things like spawning subprocesses or threading or some weird junk\r
+ * like that.\r
+ */\r
+int tcpip_connect(COMSTACK h, void *address)\r
+{\r
+ struct sockaddr_in *add = address;\r
+\r
+ TRC(fprintf(stderr, "tcpip_connect\n"));\r
+ if (connect(h->iofile, (struct sockaddr *) add, sizeof(*add)) < 0)\r
+ {\r
+#ifdef WINDOWS\r
+ if (WSAGetLastError() == WSAEWOULDBLOCK)\r
+#else\r
+ if (errno == EINPROGRESS)\r
+#endif\r
+ return 1;\r
+ return -1;\r
+ }\r
+ h->state = CS_DATAXFER;\r
+ return 0;\r
+}\r
+\r
+/*\r
+ * nop\r
+ */\r
+int tcpip_rcvconnect(COMSTACK h)\r
+{\r
+ TRC(fprintf(stderr, "tcpip_rcvconnect\n"));\r
+ return 0;\r
+}\r
+\r
+int tcpip_bind(COMSTACK h, void *address, int mode)\r
+{\r
+ struct sockaddr *addr = address;\r
+ unsigned long one = 1;\r
+\r
+ TRC(fprintf(stderr, "tcpip_bind\n"));\r
+ if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)\r
+ {\r
+ h->cerrno = CSYSERR;\r
+ return -1;\r
+ }\r
+ if (bind(h->iofile, addr, sizeof(struct sockaddr_in)) < 0)\r
+ {\r
+ h->cerrno = CSYSERR;\r
+ return -1;\r
+ }\r
+ if (mode == CS_SERVER && listen(h->iofile, 3) < 0)\r
+ {\r
+ h->cerrno = CSYSERR;\r
+ return -1;\r
+ }\r
+ h->state = CS_IDLE;\r
+ return 0;\r
+}\r
+\r
+int tcpip_listen(COMSTACK h, char *raddr, int *addrlen)\r
+{\r
+ struct sockaddr_in addr;\r
+ int len = sizeof(addr);\r
+\r
+ TRC(fprintf(stderr, "tcpip_listen\n"));\r
+ if (h->state != CS_IDLE)\r
+ {\r
+ h->cerrno = CSOUTSTATE;\r
+ return -1;\r
+ }\r
+ if ((h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len)) < 0)\r
+ {\r
+#ifdef WINDOWS\r
+ if (WSAGetLastError() == WSAEWOULDBLOCK)\r
+#else\r
+ if (errno == EWOULDBLOCK)\r
+#endif\r
+\r
+ h->cerrno = CSNODATA;\r
+ else\r
+ h->cerrno = CSYSERR;\r
+ return -1;\r
+ }\r
+ if (addrlen && *addrlen > sizeof(struct sockaddr_in))\r
+ memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));\r
+ else if (addrlen)\r
+ *addrlen = 0;\r
+ h->state = CS_INCON;\r
+ return 0;\r
+}\r
+\r
+COMSTACK tcpip_accept(COMSTACK h)\r
+{\r
+ COMSTACK new;\r
+ tcpip_state *state;\r
+#ifdef WINDOWS\r
+ unsigned long tru = 1;\r
+#endif\r
+\r
+ TRC(fprintf(stderr, "tcpip_accept\n"));\r
+ if (h->state != CS_INCON)\r
+ {\r
+ h->cerrno = CSOUTSTATE;\r
+ return 0;\r
+ }\r
+ if (!(new = malloc(sizeof(*new))))\r
+ {\r
+ h->cerrno = CSYSERR;\r
+ return 0;\r
+ }\r
+ memcpy(new, h, sizeof(*h));\r
+ new->iofile = h->newfd;\r
+ if (!(state = new->private = malloc(sizeof(tcpip_state))))\r
+ {\r
+ h->cerrno = CSYSERR;\r
+ return 0;\r
+ }\r
+#ifdef WINDOWS\r
+ if (!new->blocking && ioctlsocket(new->iofile, FIONBIO, &tru) < 0)\r
+#else\r
+ if (!new->blocking && fcntl(new->iofile, F_SETFL, O_NONBLOCK) < 0)\r
+#endif\r
+ return 0;\r
+ state->altbuf = 0;\r
+ state->altsize = state->altlen = 0;\r
+ state->towrite = state->written = -1;\r
+ new->state = CS_DATAXFER;\r
+ h->state = CS_IDLE;\r
+ return new;\r
+}\r
+\r
+#define CS_TCPIP_BUFCHUNK 4096\r
+\r
+/*\r
+ * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,\r
+ * 0=connection closed.\r
+ */\r
+int tcpip_get(COMSTACK h, char **buf, int *bufsize)\r
+{\r
+ tcpip_state *sp = h->private;\r
+ char *tmpc;\r
+ int tmpi, berlen, rest, req, tomove;\r
+ int hasread = 0, res;\r
+\r
+ TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));\r
+ if (sp->altlen) /* switch buffers */\r
+ {\r
+ TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,\r
+ (unsigned) sp->altbuf));\r
+ tmpc = *buf;\r
+ tmpi = *bufsize;\r
+ *buf = sp->altbuf;\r
+ *bufsize = sp->altsize;\r
+ hasread = sp->altlen;\r
+ sp->altlen = 0;\r
+ sp->altbuf = tmpc;\r
+ sp->altsize = tmpi;\r
+ }\r
+ while (!(berlen = completeBER((unsigned char *)*buf, hasread)))\r
+ {\r
+ if (!*bufsize)\r
+ {\r
+ if (!(*buf = malloc(*bufsize = CS_TCPIP_BUFCHUNK)))\r
+ return -1;\r
+ }\r
+ else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)\r
+ if (!(*buf = realloc(*buf, *bufsize *= 2)))\r
+ return -1;\r
+ if ((res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0)) < 0)\r
+#ifdef WINDOWS\r
+ if (WSAGetLastError() == WSAEWOULDBLOCK)\r
+#else\r
+ if (errno == EWOULDBLOCK)\r
+#endif\r
+ break;\r
+ else\r
+ return -1;\r
+ if (!res)\r
+ return 0;\r
+ hasread += res;\r
+ TRC(fprintf(stderr, " res=%d, hasread=%d\n", res, hasread));\r
+ }\r
+ TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",\r
+ hasread, berlen));\r
+ /* move surplus buffer (or everything if we didn't get a BER rec.) */\r
+ if (hasread > berlen)\r
+ {\r
+ tomove = req = hasread - berlen;\r
+ rest = tomove % CS_TCPIP_BUFCHUNK;\r
+ if (rest)\r
+ req += CS_TCPIP_BUFCHUNK - rest;\r
+ if (!sp->altbuf)\r
+ {\r
+ if (!(sp->altbuf = malloc(sp->altsize = req)))\r
+ return -1;\r
+ } else if (sp->altsize < req)\r
+ if (!(sp->altbuf = realloc(sp->altbuf, sp->altsize = req)))\r
+ return -1;\r
+ TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,\r
+ (unsigned) sp->altbuf));\r
+ memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);\r
+ }\r
+ if (berlen < CS_TCPIP_BUFCHUNK - 1)\r
+ *(*buf + berlen) = '\0';\r
+ return berlen ? berlen : 1;\r
+}\r
+\r
+/*\r
+ * Returns 1, 0 or -1\r
+ * In nonblocking mode, you must call again with same buffer while\r
+ * return value is 1.\r
+ */\r
+int tcpip_put(COMSTACK h, char *buf, int size)\r
+{\r
+ int res;\r
+ struct tcpip_state *state = h->private;\r
+\r
+ TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));\r
+ if (state->towrite < 0)\r
+ {\r
+ state->towrite = size;\r
+ state->written = 0;\r
+ }\r
+ else if (state->towrite != size)\r
+ {\r
+ h->cerrno = CSWRONGBUF;\r
+ return -1;\r
+ }\r
+ while (state->towrite > state->written)\r
+ {\r
+ if ((res = send(h->iofile, buf + state->written, size -\r
+ state->written, 0)) < 0)\r
+ {\r
+#ifdef WINDOWS\r
+ if (WSAGetLastError() == WSAEWOULDBLOCK)\r
+#else\r
+ if (errno == EAGAIN)\r
+#endif\r
+ {\r
+ TRC(fprintf(stderr, " Flow control stop\n"));\r
+ return 1;\r
+ }\r
+ h->cerrno = CSYSERR;\r
+ return -1;\r
+ }\r
+ state->written += res;\r
+ TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",\r
+ res, state->written, size));\r
+ }\r
+ state->towrite = state->written = -1;\r
+ TRC(fprintf(stderr, " Ok\n"));\r
+ return 0;\r
+}\r
+\r
+int tcpip_close(COMSTACK h)\r
+{\r
+ tcpip_state *sp = h->private;\r
+\r
+ TRC(fprintf(stderr, "tcpip_close\n"));\r
+ close(h->iofile);\r
+ if (sp->altbuf)\r
+ free(sp->altbuf);\r
+ free(sp);\r
+ free(h);\r
+ return 0;\r
+}\r
projects / yaz-moved-to-github.git / blobdiff