1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) Index Data
3 * See the file LICENSE for details.
7 * \brief Implements TCP/IP + SSL COMSTACK.
21 #include <sys/types.h>
31 /* VS 2003 or later has getaddrinfo; older versions do not */
35 #define HAVE_GETADDRINFO 1
37 #define HAVE_GETADDRINFO 0
42 #include <netinet/in.h>
48 #include <arpa/inet.h>
50 #if HAVE_NETINET_TCP_H
51 #include <netinet/tcp.h>
54 #include <sys/socket.h>
61 #include <gnutls/x509.h>
62 #include <gnutls/gnutls.h>
65 #include <yaz/comstack.h>
66 #include <yaz/tcpip.h>
67 #include <yaz/errno.h>
69 static void tcpip_close(COMSTACK h);
70 static int tcpip_put(COMSTACK h, char *buf, int size);
71 static int tcpip_get(COMSTACK h, char **buf, int *bufsize);
72 static int tcpip_put_connect(COMSTACK h, char *buf, int size);
73 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize);
74 static int tcpip_connect(COMSTACK h, void *address);
75 static int tcpip_more(COMSTACK h);
76 static int tcpip_rcvconnect(COMSTACK h);
77 static int tcpip_bind(COMSTACK h, void *address, int mode);
78 static int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
79 int (*check_ip)(void *cd, const char *a, int len, int type),
81 static int tcpip_set_blocking(COMSTACK p, int blocking);
84 static int ssl_get(COMSTACK h, char **buf, int *bufsize);
85 static int ssl_put(COMSTACK h, char *buf, int size);
88 static COMSTACK tcpip_accept(COMSTACK h);
89 static const char *tcpip_addrstr(COMSTACK h);
90 static void *tcpip_straddr(COMSTACK h, const char *str);
99 #define YAZ_SOCKLEN_T int
103 struct tcpip_cred_ptr {
104 gnutls_certificate_credentials_t xcred;
109 /* this state is used for both SSL and straight TCP/IP */
110 typedef struct tcpip_state
112 char *altbuf; /* alternate buffer for surplus data */
113 int altsize; /* size as xmalloced */
114 int altlen; /* length of data or 0 if none */
116 int written; /* -1 if we aren't writing */
117 int towrite; /* to verify against user input */
118 int (*complete)(const char *buf, int len); /* length/complete. */
122 struct sockaddr_in addr; /* returned by cs_straddr */
124 char buf[128]; /* returned by cs_addrstr */
126 struct tcpip_cred_ptr *cred_ptr;
127 gnutls_session_t session;
128 char cert_fname[256];
130 char *connect_request_buf;
131 int connect_request_len;
132 char *connect_response_buf;
133 int connect_response_len;
136 static int tcpip_init(void)
139 static int initialized = 0;
148 requested = MAKEWORD(1, 1);
149 if (WSAStartup(requested, &wd))
158 * This function is always called through the cs_create() macro.
159 * s >= 0: socket has already been established for us.
161 COMSTACK tcpip_type(int s, int flags, int protocol, void *vp)
168 if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
170 if (!(sp = (struct tcpip_state *)(p->cprivate =
171 xmalloc(sizeof(tcpip_state)))))
178 p->type = tcpip_type;
179 p->protocol = (enum oid_proto) protocol;
181 p->f_connect = tcpip_connect;
182 p->f_rcvconnect = tcpip_rcvconnect;
183 p->f_get = tcpip_get;
184 p->f_put = tcpip_put;
185 p->f_close = tcpip_close;
186 p->f_more = tcpip_more;
187 p->f_bind = tcpip_bind;
188 p->f_listen = tcpip_listen;
189 p->f_accept = tcpip_accept;
190 p->f_addrstr = tcpip_addrstr;
191 p->f_straddr = tcpip_straddr;
192 p->f_set_blocking = tcpip_set_blocking;
193 p->max_recv_bytes = 128 * 1024 * 1024;
195 p->state = s < 0 ? CS_ST_UNBND : CS_ST_IDLE; /* state of line */
203 strcpy(sp->cert_fname, "yaz.pem");
210 sp->altsize = sp->altlen = 0;
211 sp->towrite = sp->written = -1;
212 sp->complete = cs_complete_auto;
214 sp->connect_request_buf = 0;
215 sp->connect_request_len = 0;
216 sp->connect_response_buf = 0;
217 sp->connect_response_len = 0;
219 TRC(fprintf(stderr, "Created new TCPIP comstack h=%p\n", p));
224 COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
225 const char *connect_host)
227 COMSTACK p = tcpip_type(s, flags, protocol, 0);
232 tcpip_state *sp = (tcpip_state *) p->cprivate;
233 sp->connect_request_buf = (char *) xmalloc(strlen(connect_host) + 30);
234 sprintf(sp->connect_request_buf, "CONNECT %s HTTP/1.0\r\n\r\n",
236 sp->connect_request_len = strlen(sp->connect_request_buf);
237 p->f_put = tcpip_put_connect;
238 p->f_get = tcpip_get_connect;
239 sp->complete = cs_complete_auto_head; /* only want HTTP header */
245 static void tcpip_create_cred(COMSTACK cs)
247 tcpip_state *sp = (tcpip_state *) cs->cprivate;
248 sp->cred_ptr = (struct tcpip_cred_ptr *) xmalloc(sizeof(*sp->cred_ptr));
249 sp->cred_ptr->ref = 1;
250 gnutls_certificate_allocate_credentials(&sp->cred_ptr->xcred);
255 COMSTACK ssl_type(int s, int flags, int protocol, void *vp)
261 p = tcpip_type(s, flags, protocol, 0);
267 sp = (tcpip_state *) p->cprivate;
269 sp->session = (gnutls_session_t) vp;
270 /* note: we don't handle already opened socket in SSL mode - yet */
278 static int ssl_check_error(COMSTACK h, tcpip_state *sp, int res)
280 TRC(fprintf(stderr, "ssl_check_error error=%d fatal=%d msg=%s\n",
282 gnutls_error_is_fatal(res),
283 gnutls_strerror(res)));
284 if (res == GNUTLS_E_AGAIN || res == GNUTLS_E_INTERRUPTED)
286 int dir = gnutls_record_get_direction(sp->session);
287 TRC(fprintf(stderr, " -> incomplete dir=%d\n", dir));
288 h->io_pending = dir ? CS_WANT_WRITE : CS_WANT_READ;
291 h->cerrno = CSERRORSSL;
297 /* resolve using getaddrinfo */
298 struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port,
301 struct addrinfo hints, *res;
306 hints.ai_family = AF_UNSPEC;
307 hints.ai_socktype = SOCK_STREAM;
308 hints.ai_protocol = 0;
309 hints.ai_addrlen = 0;
310 hints.ai_addr = NULL;
311 hints.ai_canonname = NULL;
312 hints.ai_next = NULL;
314 strncpy(host, str, sizeof(host)-1);
315 host[sizeof(host)-1] = 0;
316 if ((p = strchr(host, '/')))
318 if ((p = strrchr(host, ':')))
324 if (!strcmp("@", host))
326 hints.ai_flags = AI_PASSIVE;
327 hints.ai_family = AF_UNSPEC;
328 error = getaddrinfo(0, port, &hints, &res);
331 else if (!strcmp("@4", host))
333 hints.ai_flags = AI_PASSIVE;
334 hints.ai_family = AF_INET;
335 error = getaddrinfo(0, port, &hints, &res);
338 else if (!strcmp("@6", host))
340 hints.ai_flags = AI_PASSIVE;
341 hints.ai_family = AF_INET6;
342 error = getaddrinfo(0, port, &hints, &res);
347 error = getaddrinfo(host, port, &hints, &res);
356 /* gethostbyname .. old systems */
357 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
362 short int port = default_port;
364 unsigned long tmpadd;
368 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
369 add->sin_family = AF_INET;
370 strncpy(buf, str, sizeof(buf)-1);
371 buf[sizeof(buf)-1] = 0;
372 if ((p = strchr(buf, '/')))
374 if ((p = strrchr(buf, ':')))
379 add->sin_port = htons(port);
380 if (!strcmp("@", buf))
382 add->sin_addr.s_addr = INADDR_ANY;
384 else if ((tmpadd = inet_addr(buf)) != -1)
386 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
388 else if ((hp = gethostbyname(buf)))
390 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
391 sizeof(struct in_addr));
399 void *tcpip_straddr(COMSTACK h, const char *str)
401 tcpip_state *sp = (tcpip_state *)h->cprivate;
402 const char *port = "210";
403 struct addrinfo *ai = 0;
405 if (h->protocol == PROTO_HTTP)
407 if (h->type == ssl_type)
416 freeaddrinfo(sp->ai);
417 sp->ai = tcpip_getaddrinfo(str, port, &ipv6_only);
418 if (sp->ai && h->state == CS_ST_UNBND)
421 for (ai = sp->ai; ai; ai = ai->ai_next)
423 if (ai->ai_family == AF_INET6)
425 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
432 for (ai = sp->ai; ai; ai = ai->ai_next)
434 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
443 if (ai->ai_family == AF_INET6 && ipv6_only >= 0 &&
444 setsockopt(h->iofile,
446 IPV6_V6ONLY, &ipv6_only, sizeof(ipv6_only)))
448 if (!tcpip_set_blocking(h, h->flags))
454 void *tcpip_straddr(COMSTACK h, const char *str)
456 tcpip_state *sp = (tcpip_state *)h->cprivate;
458 if (h->protocol == PROTO_HTTP)
460 if (h->type == ssl_type)
468 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
470 if (h->state == CS_ST_UNBND)
473 s = socket(AF_INET, SOCK_STREAM, 0);
478 if (!tcpip_set_blocking(h, h->flags))
485 int tcpip_more(COMSTACK h)
487 tcpip_state *sp = (tcpip_state *)h->cprivate;
489 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
493 * connect(2) will block (sometimes) - nothing we can do short of doing
494 * weird things like spawning subprocesses or threading or some weird junk
497 int tcpip_connect(COMSTACK h, void *address)
500 struct addrinfo *ai = (struct addrinfo *) address;
501 tcpip_state *sp = (tcpip_state *)h->cprivate;
503 struct sockaddr_in *add = (struct sockaddr_in *) address;
506 TRC(fprintf(stderr, "tcpip_connect h=%p\n", h));
508 if (h->state != CS_ST_UNBND)
510 h->cerrno = CSOUTSTATE;
514 r = connect(h->iofile, ai->ai_addr, ai->ai_addrlen);
515 freeaddrinfo(sp->ai);
518 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
523 if (WSAGetLastError() == WSAEWOULDBLOCK)
525 h->event = CS_CONNECT;
526 h->state = CS_ST_CONNECTING;
527 h->io_pending = CS_WANT_WRITE;
531 if (yaz_errno() == EINPROGRESS)
533 h->event = CS_CONNECT;
534 h->state = CS_ST_CONNECTING;
535 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
542 h->event = CS_CONNECT;
543 h->state = CS_ST_CONNECTING;
545 return tcpip_rcvconnect(h);
551 int tcpip_rcvconnect(COMSTACK h)
554 tcpip_state *sp = (tcpip_state *)h->cprivate;
556 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
558 if (h->state == CS_ST_DATAXFER)
560 if (h->state != CS_ST_CONNECTING)
562 h->cerrno = CSOUTSTATE;
566 if (h->type == ssl_type && !sp->session)
568 tcpip_create_cred(h);
569 gnutls_init(&sp->session, GNUTLS_CLIENT);
570 gnutls_set_default_priority(sp->session);
571 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
572 sp->cred_ptr->xcred);
573 /* cast to intermediate size_t to avoid GCC warning. */
574 gnutls_transport_set_ptr(sp->session,
575 (gnutls_transport_ptr_t)
580 int res = gnutls_handshake(sp->session);
583 if (ssl_check_error(h, sp, res))
590 h->state = CS_ST_DATAXFER;
594 #define CERTF "ztest.pem"
595 #define KEYF "ztest.pem"
597 static int tcpip_bind(COMSTACK h, void *address, int mode)
600 tcpip_state *sp = (tcpip_state *)h->cprivate;
602 struct addrinfo *ai = (struct addrinfo *) address;
604 struct sockaddr *addr = (struct sockaddr *)address;
613 if (h->type == ssl_type && !sp->session)
616 gnutls_global_init();
618 tcpip_create_cred(h);
620 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
623 GNUTLS_X509_FMT_PEM);
624 if (res != GNUTLS_E_SUCCESS)
626 fprintf(stderr, "Error 1\n");
627 h->cerrno = CSERRORSSL;
632 TRC(fprintf(stderr, "tcpip_bind\n"));
635 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
636 &one, sizeof(one)) < 0)
643 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
644 freeaddrinfo(sp->ai);
647 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
654 /* Allow a maximum-sized backlog of waiting-to-connect clients */
655 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
660 h->state = CS_ST_IDLE;
661 h->event = CS_LISTEN;
665 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
666 int (*check_ip)(void *cd, const char *a, int len, int t),
670 /* we don't get peer address on Windows (via accept) */
672 struct sockaddr_in addr;
673 YAZ_SOCKLEN_T len = sizeof(addr);
676 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
677 if (h->state != CS_ST_IDLE)
679 h->cerrno = CSOUTSTATE;
683 h->newfd = accept(h->iofile, 0, 0);
685 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
691 WSAGetLastError() == WSAEWOULDBLOCK
693 yaz_errno() == EWOULDBLOCK
695 #if EAGAIN != EWOULDBLOCK
696 || yaz_errno() == EAGAIN
701 h->cerrno = CSNODATA;
705 shutdown(h->iofile, SD_RECEIVE);
707 shutdown(h->iofile, SHUT_RD);
709 listen(h->iofile, SOMAXCONN);
718 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
719 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
722 if (check_ip && (*check_ip)(cd, (const char *) &addr,
723 sizeof(addr), AF_INET))
727 closesocket(h->newfd);
735 h->state = CS_ST_INCON;
739 COMSTACK tcpip_accept(COMSTACK h)
743 unsigned long tru = 1;
746 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
747 if (h->state == CS_ST_INCON)
749 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
750 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
754 closesocket(h->newfd);
761 memcpy(cnew, h, sizeof(*h));
762 cnew->iofile = h->newfd;
763 cnew->io_pending = 0;
765 if (!(state = (tcpip_state *)
766 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
772 closesocket(h->newfd);
780 if (!tcpip_set_blocking(cnew, cnew->flags))
786 closesocket(h->newfd);
798 state->altsize = state->altlen = 0;
799 state->towrite = state->written = -1;
800 state->complete = st->complete;
804 cnew->state = CS_ST_ACCEPT;
805 h->state = CS_ST_IDLE;
808 state->cred_ptr = st->cred_ptr;
814 (state->cred_ptr->ref)++;
815 gnutls_init(&state->session, GNUTLS_SERVER);
822 res = gnutls_set_default_priority(state->session);
823 if (res != GNUTLS_E_SUCCESS)
829 res = gnutls_credentials_set(state->session,
830 GNUTLS_CRD_CERTIFICATE,
831 st->cred_ptr->xcred);
832 if (res != GNUTLS_E_SUCCESS)
838 /* cast to intermediate size_t to avoid GCC warning. */
839 gnutls_transport_set_ptr(state->session,
840 (gnutls_transport_ptr_t)
841 (size_t) cnew->iofile);
844 state->connect_request_buf = 0;
845 state->connect_response_buf = 0;
848 if (h->state == CS_ST_ACCEPT)
851 tcpip_state *state = (tcpip_state *)h->cprivate;
854 int res = gnutls_handshake(state->session);
857 if (ssl_check_error(h, state, res))
859 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
862 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
866 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
872 h->cerrno = CSOUTSTATE;
876 h->state = CS_ST_DATAXFER;
881 #define CS_TCPIP_BUFCHUNK 4096
884 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
885 * 0=connection closed.
887 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
889 tcpip_state *sp = (tcpip_state *)h->cprivate;
891 int tmpi, berlen, rest, req, tomove;
892 int hasread = 0, res;
894 TRC(fprintf(stderr, "tcpip_get: h=%p bufsize=%d\n", h, *bufsize));
895 if (sp->altlen) /* switch buffers */
897 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
902 *bufsize = sp->altsize;
903 hasread = sp->altlen;
909 while (!(berlen = (*sp->complete)(*buf, hasread)))
913 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
919 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
920 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
927 /* unfortunatly, sun sometimes forgets to set errno in recv
928 when EWOULDBLOCK etc. would be required (res = -1) */
930 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
931 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
934 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
935 strerror(yaz_errno())));
937 if (WSAGetLastError() == WSAEWOULDBLOCK)
939 h->io_pending = CS_WANT_READ;
948 if (yaz_errno() == EWOULDBLOCK
950 #if EAGAIN != EWOULDBLOCK
951 || yaz_errno() == EAGAIN
954 || yaz_errno() == EINPROGRESS
956 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
960 h->io_pending = CS_WANT_READ;
963 else if (yaz_errno() == 0)
975 if (hasread > h->max_recv_bytes)
977 h->cerrno = CSBUFSIZE;
981 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
983 /* move surplus buffer (or everything if we didn't get a BER rec.) */
984 if (hasread > berlen)
986 tomove = req = hasread - berlen;
987 rest = tomove % CS_TCPIP_BUFCHUNK;
989 req += CS_TCPIP_BUFCHUNK - rest;
992 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
997 } else if (sp->altsize < req)
998 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1000 h->cerrno = CSYSERR;
1003 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1005 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1007 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1008 *(*buf + berlen) = '\0';
1009 return berlen ? berlen : 1;
1015 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1016 * 0=connection closed.
1018 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1020 tcpip_state *sp = (tcpip_state *)h->cprivate;
1022 int tmpi, berlen, rest, req, tomove;
1023 int hasread = 0, res;
1025 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1026 if (sp->altlen) /* switch buffers */
1028 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1033 *bufsize = sp->altsize;
1034 hasread = sp->altlen;
1040 while (!(berlen = (*sp->complete)(*buf, hasread)))
1044 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1047 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1048 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1050 res = gnutls_record_recv(sp->session, *buf + hasread,
1054 TRC(fprintf(stderr, "gnutls_record_recv returned 0\n"));
1059 if (ssl_check_error(h, sp, res))
1065 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1067 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1068 if (hasread > berlen)
1070 tomove = req = hasread - berlen;
1071 rest = tomove % CS_TCPIP_BUFCHUNK;
1073 req += CS_TCPIP_BUFCHUNK - rest;
1076 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1078 } else if (sp->altsize < req)
1079 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1081 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1083 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1085 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1086 *(*buf + berlen) = '\0';
1087 return berlen ? berlen : 1;
1092 * Returns 1, 0 or -1
1093 * In nonblocking mode, you must call again with same buffer while
1094 * return value is 1.
1096 int tcpip_put(COMSTACK h, char *buf, int size)
1099 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1101 TRC(fprintf(stderr, "tcpip_put: h=%p size=%d\n", h, size));
1104 if (state->towrite < 0)
1106 state->towrite = size;
1109 else if (state->towrite != size)
1111 h->cerrno = CSWRONGBUF;
1114 while (state->towrite > state->written)
1117 send(h->iofile, buf + state->written, size -
1128 WSAGetLastError() == WSAEWOULDBLOCK
1130 yaz_errno() == EWOULDBLOCK
1132 #if EAGAIN != EWOULDBLOCK
1133 || yaz_errno() == EAGAIN
1137 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1139 || yaz_errno() == EINPROGRESS
1143 TRC(fprintf(stderr, " Flow control stop\n"));
1144 h->io_pending = CS_WANT_WRITE;
1147 h->cerrno = CSYSERR;
1150 state->written += res;
1151 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1152 res, state->written, size));
1154 state->towrite = state->written = -1;
1155 TRC(fprintf(stderr, " Ok\n"));
1162 * Returns 1, 0 or -1
1163 * In nonblocking mode, you must call again with same buffer while
1164 * return value is 1.
1166 int ssl_put(COMSTACK h, char *buf, int size)
1169 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1171 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1174 if (state->towrite < 0)
1176 state->towrite = size;
1179 else if (state->towrite != size)
1181 h->cerrno = CSWRONGBUF;
1184 while (state->towrite > state->written)
1186 res = gnutls_record_send(state->session, buf + state->written,
1187 size - state->written);
1190 if (ssl_check_error(h, state, res))
1194 state->written += res;
1195 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1196 res, state->written, size));
1198 state->towrite = state->written = -1;
1199 TRC(fprintf(stderr, " Ok\n"));
1204 void tcpip_close(COMSTACK h)
1206 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1208 TRC(fprintf(stderr, "tcpip_close: h=%p pid=%d\n", h, getpid()));
1209 if (h->iofile != -1)
1213 gnutls_bye(sp->session, GNUTLS_SHUT_WR);
1216 closesocket(h->iofile);
1226 gnutls_deinit(sp->session);
1230 assert(sp->cred_ptr->ref > 0);
1232 if (--(sp->cred_ptr->ref) == 0)
1234 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1235 sp->cred_ptr->xcred, getpid()));
1236 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1237 xfree(sp->cred_ptr);
1242 #if HAVE_GETADDRINFO
1244 freeaddrinfo(sp->ai);
1246 xfree(sp->connect_request_buf);
1247 xfree(sp->connect_response_buf);
1252 const char *tcpip_addrstr(COMSTACK h)
1254 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1255 char *r = 0, *buf = sp->buf;
1257 #if HAVE_GETADDRINFO
1259 struct sockaddr_storage addr;
1260 YAZ_SOCKLEN_T len = sizeof(addr);
1262 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1264 h->cerrno = CSYSERR;
1267 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1269 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1278 struct sockaddr_in addr;
1279 YAZ_SOCKLEN_T len = sizeof(addr);
1280 struct hostent *host;
1282 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1284 h->cerrno = CSYSERR;
1287 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1289 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1290 sizeof(addr.sin_addr),
1292 r = (char*) host->h_name;
1295 r = inet_ntoa(addr.sin_addr);
1298 if (h->protocol == PROTO_HTTP)
1299 sprintf(buf, "http:%s", r);
1301 sprintf(buf, "tcp:%s", r);
1305 if (h->protocol == PROTO_HTTP)
1306 sprintf(buf, "https:%s", r);
1308 sprintf(buf, "ssl:%s", r);
1314 static int tcpip_set_blocking(COMSTACK p, int flags)
1319 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1320 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1323 flag = fcntl(p->iofile, F_GETFL, 0);
1324 if (flags & CS_FLAGS_BLOCKING)
1325 flag = flag & ~O_NONBLOCK; /* blocking */
1328 flag = flag | O_NONBLOCK; /* non-blocking */
1329 signal(SIGPIPE, SIG_IGN);
1331 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1340 /* gnutls_x509_crt_print appeared in 1.7.6. Memory leaks were fixed in 1.7.9.
1341 GNUTLS_CRT_PRINT_FULL appeared in 2.4.0. */
1342 #if GNUTLS_VERSION_NUMBER >= 0x020400
1343 #define USE_GNUTLS_X509_CRT_PRINT 1
1345 #define USE_GNUTLS_X509_CRT_PRINT 0
1349 #if USE_GNUTLS_X509_CRT_PRINT
1351 static const char *bin2hex(const void *bin, size_t bin_size)
1353 static char printable[110];
1354 const unsigned char *_bin = bin;
1360 for (i = 0; i < bin_size; i++)
1362 sprintf(print, "%.2x ", _bin[i]);
1368 static void x509_crt_print(gnutls_x509_crt_t cert)
1370 time_t expiration_time, activation_time;
1374 unsigned int algo, bits;
1376 expiration_time = gnutls_x509_crt_get_expiration_time(cert);
1377 activation_time = gnutls_x509_crt_get_activation_time(cert);
1379 printf("\tCertificate is valid since: %s", ctime(&activation_time));
1380 printf("\tCertificate expires: %s", ctime(&expiration_time));
1382 /* Print the serial number of the certificate. */
1383 size = sizeof(serial);
1384 gnutls_x509_crt_get_serial(cert, serial, &size);
1386 printf("\tCertificate serial number: %s\n", bin2hex(serial, size));
1388 /* Extract some of the public key algorithm's parameters
1390 algo = gnutls_x509_crt_get_pk_algorithm(cert, &bits);
1392 printf("Certificate public key: %s", gnutls_pk_algorithm_get_name(algo));
1394 /* Print the version of the X.509 certificate. */
1395 printf("\tCertificate version: #%d\n", gnutls_x509_crt_get_version(cert));
1398 gnutls_x509_crt_get_dn(cert, dn, &size);
1399 printf("\tDN: %s\n", dn);
1402 gnutls_x509_crt_get_issuer_dn(cert, dn, &size);
1403 printf("\tIssuer's DN: %s\n", dn);
1408 void cs_print_session_info(COMSTACK cs)
1411 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1412 if (cs->type == ssl_type && sp->session)
1414 const gnutls_datum_t *cert_list;
1415 unsigned i, cert_list_size;
1416 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1418 printf("X509 certificate\n");
1419 cert_list = gnutls_certificate_get_peers(sp->session,
1421 printf("Peer provided %u certificates\n", cert_list_size);
1422 for (i = 0; i < cert_list_size; i++)
1424 gnutls_x509_crt_t cert;
1425 #if USE_GNUTLS_X509_CRT_PRINT
1427 gnutls_datum_t cinfo;
1429 gnutls_x509_crt_init(&cert);
1430 gnutls_x509_crt_import(cert, &cert_list[i], GNUTLS_X509_FMT_DER);
1431 printf("Certificate info %d:\n", i + 1);
1432 #if USE_GNUTLS_X509_CRT_PRINT
1433 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL,
1437 printf("\t%s\n", cinfo.data);
1438 gnutls_free(cinfo.data);
1441 x509_crt_print(cert);
1443 gnutls_x509_crt_deinit(cert);
1450 void *cs_get_ssl(COMSTACK cs)
1452 /* doesn't do anything for GNUTLS */
1456 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1459 if (cs && cs->type == ssl_type)
1461 /* doesn't do anything for GNUTLS */
1468 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1471 if (cs && cs->type == ssl_type)
1473 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1474 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1475 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1482 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1486 #if USE_GNUTLS_X509_CRT_PRINT
1487 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1488 if (cs->type == ssl_type && sp->session)
1490 const gnutls_datum_t *cert_list;
1491 unsigned cert_list_size;
1492 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1494 cert_list = gnutls_certificate_get_peers(sp->session, &cert_list_size);
1495 if (cert_list_size > 0)
1497 gnutls_x509_crt_t cert;
1499 gnutls_datum_t cinfo;
1501 gnutls_x509_crt_init(&cert);
1502 gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER);
1504 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL, &cinfo);
1507 *buf = xstrdup((char *) cinfo.data);
1508 *len = strlen(*buf);
1509 gnutls_free(cinfo.data);
1510 gnutls_x509_crt_deinit(cert);
1513 gnutls_x509_crt_deinit(cert);
1521 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1523 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1525 int r = tcpip_put(h, state->connect_request_buf,
1526 state->connect_request_len);
1530 h->f_put = tcpip_put; /* switch to normal tcpip put */
1531 r = tcpip_put(h, buf, size);
1536 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1538 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1541 r = tcpip_get(h, &state->connect_response_buf,
1542 &state->connect_response_len);
1545 /* got the connect response completely */
1546 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1547 h->f_get = tcpip_get;
1548 return tcpip_get(h, buf, bufsize);
1555 * c-file-style: "Stroustrup"
1556 * indent-tabs-mode: nil
1558 * vim: shiftwidth=4 tabstop=8 expandtab