2 * Copyright (c) 1995-2001, Index Data
3 * See the file LICENSE for details.
6 * Revision 1.41 2001-10-12 21:49:26 adam
7 * For accept/recv/send check for EAGAIN if it's differs from EWOULDBLOCK.
9 * Revision 1.40 2001/08/23 09:02:46 adam
10 * WIN32 fixes: Socket not re-used for bind. yaz_log logs WIN32 error
13 * Revision 1.39 2001/07/19 19:49:40 adam
14 * Fixed bug in tcpip_set_blocking.
16 * Revision 1.38 2001/03/21 12:43:36 adam
17 * Implemented cs_create_host. Better error reporting for SSL comstack.
19 * Revision 1.37 2001/03/08 20:18:55 adam
20 * Added cs_set_blocking. Patch from Matthew Carey.
22 * Revision 1.36 2001/02/21 13:46:53 adam
25 * Revision 1.35 2000/11/27 15:17:40 adam
26 * Using SSLeay_add_all_algorithms instead of OpenSSL_add_all_algorithms.
28 * Revision 1.34 2000/11/23 10:58:32 adam
29 * SSL comstack support. Separate POSIX thread support library.
31 * Revision 1.33 2000/09/04 08:27:11 adam
32 * Work on error handling for tcpip_accept.
34 * Revision 1.32 1999/11/30 13:47:11 adam
35 * Improved installation. Moved header files to include/yaz.
37 * Revision 1.31 1999/04/29 07:31:23 adam
38 * Changed tcpip_strtoaddr_ex so that only part 'till '/' is considered
41 * Revision 1.30 1999/04/20 09:56:48 adam
42 * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
43 * Modified all encoders/decoders to reflect this change.
45 * Revision 1.29 1999/04/16 14:45:55 adam
46 * Added interface for tcpd wrapper for access control.
48 * Revision 1.28 1999/03/31 11:11:14 adam
49 * Function getprotobyname only called once. Minor change in tcpip_get
50 * to handle multi-threaded conditions.
52 * Revision 1.27 1999/02/02 13:57:31 adam
53 * Uses preprocessor define WIN32 instead of WINDOWS to build code
54 * for Microsoft WIN32.
56 * Revision 1.26 1999/01/08 11:23:14 adam
57 * Added const modifier to some of the BER/ODR encoding routines.
59 * Revision 1.25 1998/07/07 15:49:23 adam
60 * Added braces to avoid warning.
62 * Revision 1.24 1998/06/29 07:59:17 adam
65 * Revision 1.23 1998/06/23 15:37:50 adam
66 * Added type cast to prevent warning.
68 * Revision 1.22 1998/06/22 11:32:36 adam
69 * Added 'conditional cs_listen' feature.
71 * Revision 1.21 1998/05/20 09:55:32 adam
72 * Function tcpip_get treats EINPROGRESS error in the same way as
73 * EWOULDBLOCK. EINPROGRESS shouldn't be returned - but it is on
74 * Solaris in some cases.
76 * Revision 1.20 1998/05/18 10:10:40 adam
77 * Minor change to avoid C++ warning.
79 * Revision 1.19 1998/02/11 11:53:33 adam
80 * Changed code so that it compiles as C++.
82 * Revision 1.18 1997/09/29 07:15:25 adam
83 * Changed use of setsockopt to avoid warnings on MSVC.
85 * Revision 1.17 1997/09/17 12:10:30 adam
88 * Revision 1.16 1997/09/01 08:49:14 adam
89 * New windows NT/95 port using MSV5.0. Minor changes only.
91 * Revision 1.15 1997/05/14 06:53:33 adam
94 * Revision 1.14 1997/05/01 15:06:32 adam
95 * Moved WINSOCK init. code to tcpip_init routine.
97 * Revision 1.13 1996/11/01 08:45:18 adam
98 * Bug fix: used close on MS-Windows. Fixed to closesocket.
100 * Revision 1.12 1996/07/06 19:58:30 quinn
101 * System headerfiles gathered in yconfig
103 * Revision 1.11 1996/02/23 10:00:39 quinn
106 * Revision 1.10 1996/02/20 12:52:11 quinn
107 * WAIS protocol support.
109 * Revision 1.9 1996/02/10 12:23:11 quinn
110 * Enablie inetd operations fro TCP/IP stack
112 * Revision 1.8 1995/11/01 13:54:27 quinn
115 * Revision 1.7 1995/10/30 12:41:16 quinn
116 * Added hostname lookup for server.
118 * Revision 1.6 1995/09/29 17:12:00 quinn
121 * Revision 1.5 1995/09/29 17:01:48 quinn
124 * Revision 1.4 1995/09/28 10:12:26 quinn
125 * Windows-support changes
127 * Revision 1.3 1995/09/27 15:02:45 quinn
128 * Modified function heads & prototypes.
130 * Revision 1.2 1995/06/15 12:30:06 quinn
131 * Added @ as hostname alias for INADDR ANY.
133 * Revision 1.1 1995/06/14 09:58:20 quinn
134 * Renamed yazlib to comstack.
136 * Revision 1.20 1995/05/16 08:51:16 quinn
137 * License, documentation, and memory fixes
139 * Revision 1.19 1995/04/10 10:24:08 quinn
142 * Revision 1.18 1995/03/30 13:29:27 quinn
143 * Added REUSEADDR in tcpip_bind
145 * Revision 1.17 1995/03/27 08:36:10 quinn
146 * Some work on nonblocking operation in xmosi.c and rfct.c.
147 * Added protocol parameter to cs_create()
149 * Revision 1.16 1995/03/21 15:53:41 quinn
152 * Revision 1.15 1995/03/21 12:31:27 quinn
153 * Added check for EINPROGRESS on connect.
155 * Revision 1.14 1995/03/20 09:47:21 quinn
156 * Added server-side support to xmosi.c
157 * Fixed possible problems in rfct
160 * Revision 1.13 1995/03/15 16:15:13 adam
163 * Revision 1.12 1995/03/15 15:36:27 quinn
164 * Mods to support nonblocking I/O
166 * Revision 1.11 1995/03/15 08:37:57 quinn
167 * Now we're pretty much set for nonblocking I/O.
169 * Revision 1.10 1995/03/14 17:00:07 quinn
170 * Bug-fixes - added tracing info to tcpip.c
172 * Revision 1.9 1995/03/14 10:28:42 quinn
173 * Adding server-side support to tcpip.c and fixing bugs in nonblocking I/O
175 * Revision 1.8 1995/03/10 14:22:50 quinn
176 * Removed debug output.
178 * Revision 1.7 1995/03/10 11:44:59 quinn
179 * Fixes and debugging
181 * Revision 1.6 1995/03/07 10:26:55 quinn
182 * Initialized type field in the comstacks.
184 * Revision 1.5 1995/02/14 20:40:07 quinn
187 * Revision 1.4 1995/02/14 11:54:49 quinn
188 * Beginning to add full CCL.
190 * Revision 1.3 1995/02/10 18:58:10 quinn
191 * Fixed tcpip_get (formerly tcpip_read).
192 * Turned tst (cli) into a proper, event-driven thingy.
194 * Revision 1.2 1995/02/10 15:55:47 quinn
197 * Revision 1.1 1995/02/09 15:51:52 quinn
210 #if HAVE_OPENSSL_SSL_H
211 #include <openssl/ssl.h>
212 #include <openssl/err.h>
215 #include <yaz/comstack.h>
216 #include <yaz/tcpip.h>
219 /* Chas added the following, so we get the definition of completeBER */
222 int tcpip_close(COMSTACK h);
223 int tcpip_put(COMSTACK h, char *buf, int size);
224 int tcpip_get(COMSTACK h, char **buf, int *bufsize);
225 int tcpip_connect(COMSTACK h, void *address);
226 int tcpip_more(COMSTACK h);
227 int tcpip_rcvconnect(COMSTACK h);
228 int tcpip_bind(COMSTACK h, void *address, int mode);
229 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
230 int (*check_ip)(void *cd, const char *a, int len, int type),
232 int static tcpip_set_blocking(COMSTACK p, int blocking);
234 #if HAVE_OPENSSL_SSL_H
235 int ssl_get(COMSTACK h, char **buf, int *bufsize);
236 int ssl_put(COMSTACK h, char *buf, int size);
239 COMSTACK tcpip_accept(COMSTACK h);
240 char *tcpip_addrstr(COMSTACK h);
241 void *tcpip_straddr(COMSTACK h, const char *str);
249 /* this state is used for both SSL and straight TCP/IP */
250 typedef struct tcpip_state
252 char *altbuf; /* alternate buffer for surplus data */
253 int altsize; /* size as xmalloced */
254 int altlen; /* length of data or 0 if none */
256 int written; /* -1 if we aren't writing */
257 int towrite; /* to verify against user input */
258 int (*complete)(const unsigned char *buf, int len); /* length/comple. */
259 struct sockaddr_in addr; /* returned by cs_straddr */
260 char buf[128]; /* returned by cs_addrstr */
261 #if HAVE_OPENSSL_SSL_H
269 static int tcpip_init (void)
271 static int initialized = 0;
277 requested = MAKEWORD(1, 1);
278 if (WSAStartup(requested, &wd))
285 static int proto_number = 0;
287 static int tcpip_init (void)
289 struct protoent *proto;
290 /* only call getprotobyname once, in case it allocates memory */
291 if (!(proto = getprotobyname("tcp")))
293 proto_number = proto->p_proto;
299 * This function is always called through the cs_create() macro.
300 * s >= 0: socket has already been established for us.
302 COMSTACK tcpip_type(int s, int blocking, int protocol, void *vp)
308 unsigned long tru = 1;
316 if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)
319 if ((s = socket(AF_INET, SOCK_STREAM, proto_number)) < 0)
326 if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
328 if (!(state = (struct tcpip_state *)(p->cprivate =
329 xmalloc(sizeof(tcpip_state)))))
333 if (!(p->blocking = blocking) && ioctlsocket(s, FIONBIO, &tru) < 0)
335 if (!(p->blocking = blocking) && fcntl(s, F_SETFL, O_NONBLOCK) < 0)
341 p->type = tcpip_type;
342 p->protocol = (enum oid_proto) protocol;
344 p->f_connect = tcpip_connect;
345 p->f_rcvconnect = tcpip_rcvconnect;
346 p->f_get = tcpip_get;
347 p->f_put = tcpip_put;
348 p->f_close = tcpip_close;
349 p->f_more = tcpip_more;
350 p->f_bind = tcpip_bind;
351 p->f_listen = tcpip_listen;
352 p->f_accept = tcpip_accept;
353 p->f_addrstr = tcpip_addrstr;
354 p->f_straddr = tcpip_straddr;
355 p->f_set_blocking = tcpip_set_blocking;
357 p->state = new_socket ? CS_UNBND : CS_IDLE; /* state of line */
362 #if HAVE_OPENSSL_SSL_H
363 state->ctx = state->ctx_alloc = 0;
368 state->altsize = state->altlen = 0;
369 state->towrite = state->written = -1;
370 if (protocol == PROTO_WAIS)
371 state->complete = completeWAIS;
373 state->complete = completeBER;
375 p->timeout = COMSTACK_DEFAULT_TIMEOUT;
376 TRC(fprintf(stderr, "Created new TCPIP comstack\n"));
381 #if HAVE_OPENSSL_SSL_H
383 COMSTACK ssl_type(int s, int blocking, int protocol, void *vp)
387 yaz_log(LOG_LOG, "ssl_type begin");
389 p = tcpip_type (s, blocking, protocol, 0);
395 state = (tcpip_state *) p->cprivate;
400 SSL_load_error_strings();
401 SSLeay_add_all_algorithms();
403 state->ctx = state->ctx_alloc = SSL_CTX_new (SSLv23_method());
410 /* note: we don't handle already opened socket in SSL mode - yet */
411 yaz_log(LOG_LOG, "ssl_type end");
416 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add)
420 short int port = 210;
425 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
426 add->sin_family = AF_INET;
427 strncpy(buf, str, 511);
429 if ((p = strchr(buf, '/')))
431 if ((p = strchr(buf, ':')))
436 add->sin_port = htons(port);
437 if (!strcmp("@", buf))
438 add->sin_addr.s_addr = INADDR_ANY;
439 else if ((hp = gethostbyname(buf)))
440 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
441 sizeof(struct in_addr));
442 else if ((tmpadd = (unsigned) inet_addr(buf)) != 0)
443 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
449 void *tcpip_straddr(COMSTACK h, const char *str)
451 tcpip_state *sp = (tcpip_state *)h->cprivate;
453 if (!tcpip_strtoaddr_ex (str, &sp->addr))
458 struct sockaddr_in *tcpip_strtoaddr(const char *str)
460 static struct sockaddr_in add;
462 if (!tcpip_strtoaddr_ex (str, &add))
467 int tcpip_more(COMSTACK h)
469 tcpip_state *sp = (tcpip_state *)h->cprivate;
471 return sp->altlen && (*sp->complete)((unsigned char *) sp->altbuf,
476 * connect(2) will block (sometimes) - nothing we can do short of doing
477 * weird things like spawning subprocesses or threading or some weird junk
480 int tcpip_connect(COMSTACK h, void *address)
482 struct sockaddr_in *add = (struct sockaddr_in *)address;
483 #if HAVE_OPENSSL_SSL_H
484 tcpip_state *sp = (tcpip_state *)h->cprivate;
488 TRC(fprintf(stderr, "tcpip_connect\n"));
490 if (h->state == CS_UNBND)
492 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
496 if (WSAGetLastError() == WSAEWOULDBLOCK)
498 h->state = CS_CONNECTING;
499 h->io_pending = CS_WANT_WRITE;
503 if (errno == EINPROGRESS)
505 h->state = CS_CONNECTING;
506 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
513 h->state = CS_CONNECTING;
515 if (h->state != CS_CONNECTING)
517 h->cerrno = CSOUTSTATE;
520 #if HAVE_OPENSSL_SSL_H
527 sp->ssl = SSL_new (sp->ctx);
528 SSL_set_fd (sp->ssl, h->iofile);
530 res = SSL_connect (sp->ssl);
533 int err = SSL_get_error(sp->ssl, res);
534 if (err == SSL_ERROR_WANT_READ)
536 yaz_log (LOG_LOG, "SSL_connect. want_read");
537 h->io_pending = CS_WANT_READ;
540 if (err == SSL_ERROR_WANT_WRITE)
542 yaz_log (LOG_LOG, "SSL_connect. want_write");
543 h->io_pending = CS_WANT_WRITE;
546 h->cerrno = CSERRORSSL;
551 h->state = CS_DATAXFER;
558 int tcpip_rcvconnect(COMSTACK h)
560 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
564 #define CERTF "ztest.pem"
565 #define KEYF "ztest.pem"
567 int tcpip_bind(COMSTACK h, void *address, int mode)
569 struct sockaddr *addr = (struct sockaddr *)address;
573 unsigned long one = 1;
576 #if HAVE_OPENSSL_SSL_H
577 tcpip_state *sp = (tcpip_state *)h->cprivate;
583 res = SSL_CTX_use_certificate_file (sp->ctx, CERTF,
587 ERR_print_errors_fp(stderr);
590 res = SSL_CTX_use_PrivateKey_file (sp->ctx, KEYF,
594 ERR_print_errors_fp(stderr);
597 res = SSL_CTX_check_private_key (sp->ctx);
600 ERR_print_errors_fp(stderr);
604 TRC (fprintf (stderr, "ssl_bind\n"));
608 TRC (fprintf (stderr, "tcpip_bind\n"));
611 TRC (fprintf (stderr, "tcpip_bind\n"));
614 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
615 &one, sizeof(one)) < 0)
621 if (bind(h->iofile, addr, sizeof(struct sockaddr_in)))
626 if (mode == CS_SERVER && listen(h->iofile, 3) < 0)
635 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
636 int (*check_ip)(void *cd, const char *a, int len, int t),
639 struct sockaddr_in addr;
641 socklen_t len = sizeof(addr);
643 int len = sizeof(addr);
646 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
647 if (h->state != CS_IDLE)
649 h->cerrno = CSOUTSTATE;
652 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
657 WSAGetLastError() == WSAEWOULDBLOCK
661 #if EAGAIN != EWOULDBLOCK
667 h->cerrno = CSNODATA;
672 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
673 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
676 if (check_ip && (*check_ip)(cd, (const char *) &addr,
677 sizeof(addr), AF_INET))
681 closesocket(h->newfd);
692 COMSTACK tcpip_accept(COMSTACK h)
695 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
697 unsigned long tru = 1;
700 TRC(fprintf(stderr, "tcpip_accept\n"));
701 if (h->state == CS_INCON)
703 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
707 closesocket(h->newfd);
714 memcpy(cnew, h, sizeof(*h));
715 cnew->iofile = h->newfd;
716 cnew->io_pending = 0;
717 if (!(state = (tcpip_state *)
718 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
724 closesocket(h->newfd);
732 if (!cnew->blocking &&
734 (ioctlsocket(cnew->iofile, FIONBIO, &tru) < 0)
736 (!cnew->blocking && fcntl(cnew->iofile, F_SETFL, O_NONBLOCK) < 0)
744 closesocket(h->newfd);
756 state->altsize = state->altlen = 0;
757 state->towrite = state->written = -1;
758 state->complete = st->complete;
759 cnew->state = CS_ACCEPT;
762 #if HAVE_OPENSSL_SSL_H
763 state->ctx = st->ctx;
764 state->ctx_alloc = 0;
765 state->ssl = st->ssl;
768 state->ssl = SSL_new (state->ctx);
769 SSL_set_fd (state->ssl, cnew->iofile);
774 if (h->state == CS_ACCEPT)
776 #if HAVE_OPENSSL_SSL_H
777 tcpip_state *state = (tcpip_state *)h->cprivate;
780 int res = SSL_accept (state->ssl);
781 TRC(fprintf(stderr, "SSL_accept\n"));
784 int err = SSL_get_error(state->ssl, res);
785 if (err == SSL_ERROR_WANT_READ)
787 h->io_pending = CS_WANT_READ;
788 yaz_log (LOG_LOG, "SSL_accept. want_read");
791 if (err == SSL_ERROR_WANT_WRITE)
793 h->io_pending = CS_WANT_WRITE;
794 yaz_log (LOG_LOG, "SSL_accept. want_write");
805 h->cerrno = CSOUTSTATE;
809 h->state = CS_DATAXFER;
813 #define CS_TCPIP_BUFCHUNK 4096
816 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
817 * 0=connection closed.
819 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
821 tcpip_state *sp = (tcpip_state *)h->cprivate;
823 int tmpi, berlen, rest, req, tomove;
824 int hasread = 0, res;
826 TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
827 if (sp->altlen) /* switch buffers */
829 TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
830 (unsigned) sp->altbuf));
834 *bufsize = sp->altsize;
835 hasread = sp->altlen;
841 while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
845 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
848 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
849 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
851 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
852 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
856 if (WSAGetLastError() == WSAEWOULDBLOCK)
858 h->io_pending = CS_WANT_READ;
864 if (errno == EWOULDBLOCK
866 #if EAGAIN != EWOULDBLOCK
870 || errno == EINPROGRESS
873 h->io_pending = CS_WANT_READ;
886 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
888 /* move surplus buffer (or everything if we didn't get a BER rec.) */
889 if (hasread > berlen)
891 tomove = req = hasread - berlen;
892 rest = tomove % CS_TCPIP_BUFCHUNK;
894 req += CS_TCPIP_BUFCHUNK - rest;
897 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
899 } else if (sp->altsize < req)
900 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
902 TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
903 (unsigned) sp->altbuf));
904 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
906 if (berlen < CS_TCPIP_BUFCHUNK - 1)
907 *(*buf + berlen) = '\0';
908 return berlen ? berlen : 1;
912 #if HAVE_OPENSSL_SSL_H
914 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
915 * 0=connection closed.
917 int ssl_get(COMSTACK h, char **buf, int *bufsize)
919 tcpip_state *sp = (tcpip_state *)h->cprivate;
921 int tmpi, berlen, rest, req, tomove;
922 int hasread = 0, res;
924 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
925 if (sp->altlen) /* switch buffers */
927 TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
928 (unsigned) sp->altbuf));
932 *bufsize = sp->altsize;
933 hasread = sp->altlen;
939 while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
943 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
946 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
947 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
949 res = SSL_read (sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
950 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
953 int ssl_err = SSL_get_error(sp->ssl, res);
954 if (ssl_err == SSL_ERROR_WANT_READ)
956 h->io_pending = CS_WANT_READ;
957 yaz_log (LOG_LOG, "SSL_read. want_read");
960 if (ssl_err == SSL_ERROR_WANT_WRITE)
962 h->io_pending = CS_WANT_WRITE;
963 yaz_log (LOG_LOG, "SSL_read. want_write");
968 h->cerrno = CSERRORSSL;
973 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
975 /* move surplus buffer (or everything if we didn't get a BER rec.) */
976 if (hasread > berlen)
978 tomove = req = hasread - berlen;
979 rest = tomove % CS_TCPIP_BUFCHUNK;
981 req += CS_TCPIP_BUFCHUNK - rest;
984 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
986 } else if (sp->altsize < req)
987 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
989 TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
990 (unsigned) sp->altbuf));
991 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
993 if (berlen < CS_TCPIP_BUFCHUNK - 1)
994 *(*buf + berlen) = '\0';
995 return berlen ? berlen : 1;
1000 * Returns 1, 0 or -1
1001 * In nonblocking mode, you must call again with same buffer while
1002 * return value is 1.
1004 int tcpip_put(COMSTACK h, char *buf, int size)
1007 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1009 TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
1011 if (state->towrite < 0)
1013 state->towrite = size;
1016 else if (state->towrite != size)
1018 h->cerrno = CSWRONGBUF;
1021 while (state->towrite > state->written)
1023 if ((res = send(h->iofile, buf + state->written, size -
1024 state->written, 0)) < 0)
1028 WSAGetLastError() == WSAEWOULDBLOCK
1030 errno == EWOULDBLOCK
1032 #if EAGAIN != EWOULDBLOCK
1039 TRC(fprintf(stderr, " Flow control stop\n"));
1040 h->io_pending = CS_WANT_WRITE;
1043 h->cerrno = CSYSERR;
1046 state->written += res;
1047 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1048 res, state->written, size));
1050 state->towrite = state->written = -1;
1051 TRC(fprintf(stderr, " Ok\n"));
1056 #if HAVE_OPENSSL_SSL_H
1058 * Returns 1, 0 or -1
1059 * In nonblocking mode, you must call again with same buffer while
1060 * return value is 1.
1062 int ssl_put(COMSTACK h, char *buf, int size)
1065 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1067 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1069 if (state->towrite < 0)
1071 state->towrite = size;
1074 else if (state->towrite != size)
1076 h->cerrno = CSWRONGBUF;
1079 while (state->towrite > state->written)
1081 res = SSL_write (state->ssl, buf + state->written,
1082 size - state->written);
1085 int ssl_err = SSL_get_error(state->ssl, res);
1086 if (ssl_err == SSL_ERROR_WANT_READ)
1088 h->io_pending = CS_WANT_READ;
1089 yaz_log (LOG_LOG, "SSL_write. want_read");
1092 if (ssl_err == SSL_ERROR_WANT_WRITE)
1094 h->io_pending = CS_WANT_WRITE;
1095 yaz_log (LOG_LOG, "SSL_write. want_write");
1098 h->cerrno = CSERRORSSL;
1101 state->written += res;
1102 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1103 res, state->written, size));
1105 state->towrite = state->written = -1;
1106 TRC(fprintf(stderr, " Ok\n"));
1111 int tcpip_close(COMSTACK h)
1113 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1115 TRC(fprintf(stderr, "tcpip_close\n"));
1116 if (h->iofile != -1)
1118 #if HAVE_OPENSSL_SSL_H
1121 SSL_shutdown (sp->ssl);
1125 closesocket(h->iofile);
1132 #if HAVE_OPENSSL_SSL_H
1135 TRC (fprintf(stderr, "SSL_free\n"));
1140 SSL_CTX_free (sp->ctx_alloc);
1147 char *tcpip_addrstr(COMSTACK h)
1149 struct sockaddr_in addr;
1150 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1151 char *r, *buf = sp->buf;
1153 struct hostent *host;
1156 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1158 h->cerrno = CSYSERR;
1161 if ((host = gethostbyaddr((char*)&addr.sin_addr, sizeof(addr.sin_addr),
1163 r = (char*) host->h_name;
1165 r = inet_ntoa(addr.sin_addr);
1166 sprintf(buf, "tcp:%s", r);
1167 #if HAVE_OPENSSL_SSL_H
1169 sprintf(buf, "ssl:%s", r);
1174 int static tcpip_set_blocking(COMSTACK p, int blocking)
1178 if (p->blocking == blocking)
1182 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1185 flag = fcntl(p->iofile, F_GETFL, 0);
1187 flag = flag & ~O_NONBLOCK;
1189 flag = flag | O_NONBLOCK;
1190 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1193 p->blocking = blocking;