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>
29 #include <yaz/thread_create.h>
32 /* VS 2003 or later has getaddrinfo; older versions do not */
36 #define HAVE_GETADDRINFO 1
38 #define HAVE_GETADDRINFO 0
43 #include <netinet/in.h>
49 #include <arpa/inet.h>
51 #if HAVE_NETINET_TCP_H
52 #include <netinet/tcp.h>
55 #include <sys/socket.h>
62 #include <gnutls/x509.h>
63 #include <gnutls/gnutls.h>
66 #include <yaz/comstack.h>
67 #include <yaz/tcpip.h>
68 #include <yaz/errno.h>
71 #define RESOLVER_THREAD 1
74 static void tcpip_close(COMSTACK h);
75 static int tcpip_put(COMSTACK h, char *buf, int size);
76 static int tcpip_get(COMSTACK h, char **buf, int *bufsize);
77 static int tcpip_put_connect(COMSTACK h, char *buf, int size);
78 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize);
79 static int tcpip_connect(COMSTACK h, void *address);
80 static int tcpip_more(COMSTACK h);
81 static int tcpip_rcvconnect(COMSTACK h);
82 static int tcpip_bind(COMSTACK h, void *address, int mode);
83 static int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
84 int (*check_ip)(void *cd, const char *a, int len, int type),
86 static int tcpip_set_blocking(COMSTACK p, int blocking);
89 static int ssl_get(COMSTACK h, char **buf, int *bufsize);
90 static int ssl_put(COMSTACK h, char *buf, int size);
95 struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port,
99 static COMSTACK tcpip_accept(COMSTACK h);
100 static const char *tcpip_addrstr(COMSTACK h);
101 static void *tcpip_straddr(COMSTACK h, const char *str);
109 #ifndef YAZ_SOCKLEN_T
110 #define YAZ_SOCKLEN_T int
114 struct tcpip_cred_ptr {
115 gnutls_certificate_credentials_t xcred;
120 /* this state is used for both SSL and straight TCP/IP */
121 typedef struct tcpip_state
123 char *altbuf; /* alternate buffer for surplus data */
124 int altsize; /* size as xmalloced */
125 int altlen; /* length of data or 0 if none */
127 int written; /* -1 if we aren't writing */
128 int towrite; /* to verify against user input */
129 int (*complete)(const char *buf, int len); /* length/complete. */
132 struct addrinfo *ai_connect;
139 yaz_thread_t thread_id;
142 struct sockaddr_in addr; /* returned by cs_straddr */
144 char buf[128]; /* returned by cs_addrstr */
146 struct tcpip_cred_ptr *cred_ptr;
147 gnutls_session_t session;
148 char cert_fname[256];
150 char *connect_request_buf;
151 int connect_request_len;
152 char *connect_response_buf;
153 int connect_response_len;
156 static int tcpip_init(void)
159 static int initialized = 0;
168 requested = MAKEWORD(1, 1);
169 if (WSAStartup(requested, &wd))
177 static struct tcpip_state *tcpip_state_create(void)
179 tcpip_state *sp = (struct tcpip_state *) xmalloc(sizeof(*sp));
182 sp->altsize = sp->altlen = 0;
183 sp->towrite = sp->written = -1;
184 sp->complete = cs_complete_auto;
192 sp->pipefd[0] = sp->pipefd[1] = -1;
200 strcpy(sp->cert_fname, "yaz.pem");
202 sp->connect_request_buf = 0;
203 sp->connect_request_len = 0;
204 sp->connect_response_buf = 0;
205 sp->connect_response_len = 0;
210 * This function is always called through the cs_create() macro.
211 * s >= 0: socket has already been established for us.
213 COMSTACK tcpip_type(int s, int flags, int protocol, void *vp)
219 if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
222 p->cprivate = tcpip_state_create();
227 p->type = tcpip_type;
228 p->protocol = (enum oid_proto) protocol;
230 p->f_connect = tcpip_connect;
231 p->f_rcvconnect = tcpip_rcvconnect;
232 p->f_get = tcpip_get;
233 p->f_put = tcpip_put;
234 p->f_close = tcpip_close;
235 p->f_more = tcpip_more;
236 p->f_bind = tcpip_bind;
237 p->f_listen = tcpip_listen;
238 p->f_accept = tcpip_accept;
239 p->f_addrstr = tcpip_addrstr;
240 p->f_straddr = tcpip_straddr;
241 p->f_set_blocking = tcpip_set_blocking;
242 p->max_recv_bytes = 128 * 1024 * 1024;
244 p->state = s < 0 ? CS_ST_UNBND : CS_ST_IDLE; /* state of line */
249 TRC(fprintf(stderr, "Created new TCPIP comstack h=%p\n", p));
254 COMSTACK yaz_tcpip_create2(int s, int flags, int protocol,
255 const char *connect_host,
256 const char *bind_host)
258 COMSTACK p = tcpip_type(s, flags, protocol, 0);
263 tcpip_state *sp = (tcpip_state *) p->cprivate;
264 sp->bind_host = xstrdup(bind_host);
268 tcpip_state *sp = (tcpip_state *) p->cprivate;
269 sp->connect_request_buf = (char *) xmalloc(strlen(connect_host) + 30);
270 sprintf(sp->connect_request_buf, "CONNECT %s HTTP/1.0\r\n\r\n",
272 sp->connect_request_len = strlen(sp->connect_request_buf);
273 p->f_put = tcpip_put_connect;
274 p->f_get = tcpip_get_connect;
275 sp->complete = cs_complete_auto_head; /* only want HTTP header */
280 COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
281 const char *connect_host)
283 return yaz_tcpip_create2(s, flags, protocol, connect_host, 0);
287 static void tcpip_create_cred(COMSTACK cs)
289 tcpip_state *sp = (tcpip_state *) cs->cprivate;
290 sp->cred_ptr = (struct tcpip_cred_ptr *) xmalloc(sizeof(*sp->cred_ptr));
291 sp->cred_ptr->ref = 1;
292 gnutls_certificate_allocate_credentials(&sp->cred_ptr->xcred);
297 COMSTACK ssl_type(int s, int flags, int protocol, void *vp)
303 p = tcpip_type(s, flags, protocol, 0);
309 sp = (tcpip_state *) p->cprivate;
311 sp->session = (gnutls_session_t) vp;
312 /* note: we don't handle already opened socket in SSL mode - yet */
320 static int ssl_check_error(COMSTACK h, tcpip_state *sp, int res)
322 TRC(fprintf(stderr, "ssl_check_error error=%d fatal=%d msg=%s\n",
324 gnutls_error_is_fatal(res),
325 gnutls_strerror(res)));
326 if (res == GNUTLS_E_AGAIN || res == GNUTLS_E_INTERRUPTED)
328 int dir = gnutls_record_get_direction(sp->session);
329 TRC(fprintf(stderr, " -> incomplete dir=%d\n", dir));
330 h->io_pending = dir ? CS_WANT_WRITE : CS_WANT_READ;
333 h->cerrno = CSERRORSSL;
339 /* resolve using getaddrinfo */
340 struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port,
343 struct addrinfo hints, *res;
348 hints.ai_family = AF_UNSPEC;
349 hints.ai_socktype = SOCK_STREAM;
350 hints.ai_protocol = 0;
351 hints.ai_addrlen = 0;
352 hints.ai_addr = NULL;
353 hints.ai_canonname = NULL;
354 hints.ai_next = NULL;
356 strncpy(host, str, sizeof(host)-1);
357 host[sizeof(host)-1] = 0;
358 if ((p = strchr(host, '/')))
360 if ((p = strrchr(host, ':')))
366 if (!strcmp("@", host))
368 hints.ai_flags = AI_PASSIVE;
369 hints.ai_family = AF_UNSPEC;
370 error = getaddrinfo(0, port, &hints, &res);
373 else if (!strcmp("@4", host))
375 hints.ai_flags = AI_PASSIVE;
376 hints.ai_family = AF_INET;
377 error = getaddrinfo(0, port, &hints, &res);
380 else if (!strcmp("@6", host))
382 hints.ai_flags = AI_PASSIVE;
383 hints.ai_family = AF_INET6;
384 error = getaddrinfo(0, port, &hints, &res);
389 error = getaddrinfo(host, port, &hints, &res);
398 /* gethostbyname .. old systems */
399 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
404 short int port = default_port;
406 unsigned long tmpadd;
410 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
411 add->sin_family = AF_INET;
412 strncpy(buf, str, sizeof(buf)-1);
413 buf[sizeof(buf)-1] = 0;
414 if ((p = strchr(buf, '/')))
416 if ((p = strrchr(buf, ':')))
421 add->sin_port = htons(port);
422 if (!strcmp("@", buf))
424 add->sin_addr.s_addr = INADDR_ANY;
426 else if ((tmpadd = inet_addr(buf)) != -1)
428 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
430 else if ((hp = gethostbyname(buf)))
432 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
433 sizeof(struct in_addr));
441 static struct addrinfo *create_net_socket(COMSTACK h)
443 tcpip_state *sp = (tcpip_state *)h->cprivate;
445 struct addrinfo *ai = 0;
446 if (sp->ipv6_only >= 0)
448 for (ai = sp->ai; ai; ai = ai->ai_next)
450 if (ai->ai_family == AF_INET6)
452 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
460 for (ai = sp->ai; ai; ai = ai->ai_next)
462 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
469 TRC(fprintf(stderr, "First socket fd=%d\n", s));
472 if (ai->ai_family == AF_INET6 && sp->ipv6_only >= 0 &&
473 setsockopt(h->iofile,
475 IPV6_V6ONLY, &sp->ipv6_only, sizeof(sp->ipv6_only)))
477 if (!tcpip_set_blocking(h, h->flags))
483 struct addrinfo *ai = tcpip_getaddrinfo(sp->bind_host, "210",
487 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
491 if (xerrno == EINVAL)
492 fprintf(stderr, "bind returned EINVAL\n");
493 fprintf(stderr, "bind failed errno=%d %s\n", xerrno,
505 void *resolver_thread(void *arg)
507 COMSTACK h = (COMSTACK) arg;
508 tcpip_state *sp = (tcpip_state *)h->cprivate;
512 freeaddrinfo(sp->ai);
513 sp->ai = tcpip_getaddrinfo(sp->hoststr, sp->port, &sp->ipv6_only);
514 write(sp->pipefd[1], "1", 1);
518 static struct addrinfo *wait_resolver_thread(COMSTACK h)
520 tcpip_state *sp = (tcpip_state *)h->cprivate;
523 read(sp->pipefd[0], &buf, 1);
524 yaz_thread_join(&sp->thread_id, 0);
525 close(sp->pipefd[0]);
526 close(sp->pipefd[1]);
529 return create_net_socket(h);
534 void *tcpip_straddr(COMSTACK h, const char *str)
536 tcpip_state *sp = (tcpip_state *)h->cprivate;
537 const char *port = "210";
542 if (h->protocol == PROTO_HTTP)
544 if (h->type == ssl_type)
550 if (h->flags & CS_FLAGS_DNS_NO_BLOCK)
552 if (sp->pipefd[0] != -1)
554 if (pipe(sp->pipefd) == -1)
559 sp->hoststr = xstrdup(str);
560 sp->thread_id = yaz_thread_create(resolver_thread, h);
565 freeaddrinfo(sp->ai);
566 sp->ai = tcpip_getaddrinfo(str, port, &sp->ipv6_only);
567 if (sp->ai && h->state == CS_ST_UNBND)
569 return create_net_socket(h);
575 void *tcpip_straddr(COMSTACK h, const char *str)
577 tcpip_state *sp = (tcpip_state *)h->cprivate;
579 if (h->protocol == PROTO_HTTP)
581 if (h->type == ssl_type)
589 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
591 if (h->state == CS_ST_UNBND)
594 s = socket(AF_INET, SOCK_STREAM, 0);
599 if (!tcpip_set_blocking(h, h->flags))
606 int tcpip_more(COMSTACK h)
608 tcpip_state *sp = (tcpip_state *)h->cprivate;
610 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
613 static int cont_connect(COMSTACK h)
616 tcpip_state *sp = (tcpip_state *)h->cprivate;
617 struct addrinfo *ai = sp->ai_connect;
618 while (ai && (ai = ai->ai_next))
621 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
625 if (h->type == ssl_type && sp->session)
627 gnutls_bye(sp->session, GNUTLS_SHUT_WR);
628 gnutls_deinit(sp->session);
633 closesocket(h->iofile);
637 TRC(fprintf(stderr, "Other socket call fd=%d\n", s));
638 h->state = CS_ST_UNBND;
640 tcpip_set_blocking(h, h->flags);
641 return tcpip_connect(h, ai);
651 * connect(2) will block (sometimes) - nothing we can do short of doing
652 * weird things like spawning subprocesses or threading or some weird junk
655 int tcpip_connect(COMSTACK h, void *address)
658 struct addrinfo *ai = (struct addrinfo *) address;
659 tcpip_state *sp = (tcpip_state *)h->cprivate;
661 struct sockaddr_in *add = (struct sockaddr_in *) address;
664 TRC(fprintf(stderr, "tcpip_connect h=%p\n", h));
666 if (h->state != CS_ST_UNBND)
668 h->cerrno = CSOUTSTATE;
673 if (sp->pipefd[0] != -1)
675 if (h->flags & CS_FLAGS_BLOCKING)
677 ai = wait_resolver_thread(h);
683 h->event = CS_CONNECT;
684 h->state = CS_ST_CONNECTING;
685 h->io_pending = CS_WANT_READ;
686 h->iofile = sp->pipefd[0];
691 r = connect(h->iofile, ai->ai_addr, ai->ai_addrlen);
694 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
699 if (WSAGetLastError() == WSAEWOULDBLOCK)
701 h->event = CS_CONNECT;
702 h->state = CS_ST_CONNECTING;
703 h->io_pending = CS_WANT_WRITE;
707 if (yaz_errno() == EINPROGRESS)
709 TRC(fprintf(stderr, "Pending fd=%d\n", h->iofile));
710 h->event = CS_CONNECT;
711 h->state = CS_ST_CONNECTING;
712 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
716 return cont_connect(h);
718 h->event = CS_CONNECT;
719 h->state = CS_ST_CONNECTING;
721 return tcpip_rcvconnect(h);
727 int tcpip_rcvconnect(COMSTACK h)
729 tcpip_state *sp = (tcpip_state *)h->cprivate;
730 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
732 if (h->state == CS_ST_DATAXFER)
736 if (sp->pipefd[0] != -1)
738 struct addrinfo *ai = wait_resolver_thread(h);
741 h->state = CS_ST_UNBND;
742 return tcpip_connect(h, ai);
746 if (h->state != CS_ST_CONNECTING)
748 h->cerrno = CSOUTSTATE;
752 if (h->type == ssl_type && !sp->session)
754 tcpip_create_cred(h);
755 gnutls_init(&sp->session, GNUTLS_CLIENT);
756 gnutls_set_default_priority(sp->session);
757 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
758 sp->cred_ptr->xcred);
759 /* cast to intermediate size_t to avoid GCC warning. */
760 gnutls_transport_set_ptr(sp->session,
761 (gnutls_transport_ptr_t)
766 int res = gnutls_handshake(sp->session);
769 if (ssl_check_error(h, sp, res))
771 return cont_connect(h);
776 h->state = CS_ST_DATAXFER;
780 #define CERTF "ztest.pem"
781 #define KEYF "ztest.pem"
783 static int tcpip_bind(COMSTACK h, void *address, int mode)
786 tcpip_state *sp = (tcpip_state *)h->cprivate;
788 struct addrinfo *ai = (struct addrinfo *) address;
790 struct sockaddr *addr = (struct sockaddr *)address;
800 if (sp->pipefd[0] != -1)
802 ai = wait_resolver_thread(h);
809 if (h->type == ssl_type && !sp->session)
812 tcpip_create_cred(h);
813 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
816 GNUTLS_X509_FMT_PEM);
817 if (res != GNUTLS_E_SUCCESS)
819 h->cerrno = CSERRORSSL;
824 TRC(fprintf(stderr, "tcpip_bind\n"));
827 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
828 &one, sizeof(one)) < 0)
835 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
836 freeaddrinfo(sp->ai);
839 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
846 /* Allow a maximum-sized backlog of waiting-to-connect clients */
847 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
852 h->state = CS_ST_IDLE;
853 h->event = CS_LISTEN;
857 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
858 int (*check_ip)(void *cd, const char *a, int len, int t),
862 /* we don't get peer address on Windows (via accept) */
864 struct sockaddr_in addr;
865 YAZ_SOCKLEN_T len = sizeof(addr);
868 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
869 if (h->state != CS_ST_IDLE)
871 h->cerrno = CSOUTSTATE;
875 h->newfd = accept(h->iofile, 0, 0);
877 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
883 WSAGetLastError() == WSAEWOULDBLOCK
885 yaz_errno() == EWOULDBLOCK
887 #if EAGAIN != EWOULDBLOCK
888 || yaz_errno() == EAGAIN
893 h->cerrno = CSNODATA;
897 shutdown(h->iofile, SD_RECEIVE);
899 shutdown(h->iofile, SHUT_RD);
901 listen(h->iofile, SOMAXCONN);
910 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
911 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
914 if (check_ip && (*check_ip)(cd, (const char *) &addr,
915 sizeof(addr), AF_INET))
919 closesocket(h->newfd);
927 h->state = CS_ST_INCON;
931 COMSTACK tcpip_accept(COMSTACK h)
935 unsigned long tru = 1;
938 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
939 if (h->state == CS_ST_INCON)
941 tcpip_state *st = (tcpip_state *)h->cprivate;
942 tcpip_state *state = tcpip_state_create();
943 cnew = (COMSTACK) xmalloc(sizeof(*cnew));
945 memcpy(cnew, h, sizeof(*h));
946 cnew->iofile = h->newfd;
947 cnew->io_pending = 0;
948 cnew->cprivate = state;
950 if (!tcpip_set_blocking(cnew, cnew->flags))
956 closesocket(h->newfd);
967 cnew->state = CS_ST_ACCEPT;
968 h->state = CS_ST_IDLE;
971 state->cred_ptr = st->cred_ptr;
976 (state->cred_ptr->ref)++;
977 gnutls_init(&state->session, GNUTLS_SERVER);
984 res = gnutls_set_default_priority(state->session);
985 if (res != GNUTLS_E_SUCCESS)
991 res = gnutls_credentials_set(state->session,
992 GNUTLS_CRD_CERTIFICATE,
993 st->cred_ptr->xcred);
994 if (res != GNUTLS_E_SUCCESS)
1000 /* cast to intermediate size_t to avoid GCC warning. */
1001 gnutls_transport_set_ptr(state->session,
1002 (gnutls_transport_ptr_t)
1003 (size_t) cnew->iofile);
1008 if (h->state == CS_ST_ACCEPT)
1011 tcpip_state *state = (tcpip_state *)h->cprivate;
1014 int res = gnutls_handshake(state->session);
1017 if (ssl_check_error(h, state, res))
1019 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
1022 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
1026 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
1032 h->cerrno = CSOUTSTATE;
1036 h->state = CS_ST_DATAXFER;
1041 #define CS_TCPIP_BUFCHUNK 4096
1044 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1045 * 0=connection closed.
1047 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1049 tcpip_state *sp = (tcpip_state *)h->cprivate;
1051 int tmpi, berlen, rest, req, tomove;
1052 int hasread = 0, res;
1054 TRC(fprintf(stderr, "tcpip_get: h=%p bufsize=%d\n", h, *bufsize));
1055 if (sp->altlen) /* switch buffers */
1057 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1062 *bufsize = sp->altsize;
1063 hasread = sp->altlen;
1069 while (!(berlen = (*sp->complete)(*buf, hasread)))
1073 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1075 h->cerrno = CSYSERR;
1079 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1080 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1082 h->cerrno = CSYSERR;
1087 /* unfortunatly, sun sometimes forgets to set errno in recv
1088 when EWOULDBLOCK etc. would be required (res = -1) */
1090 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1091 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1094 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1095 strerror(yaz_errno())));
1097 if (WSAGetLastError() == WSAEWOULDBLOCK)
1099 h->io_pending = CS_WANT_READ;
1104 h->cerrno = CSYSERR;
1108 if (yaz_errno() == EWOULDBLOCK
1110 #if EAGAIN != EWOULDBLOCK
1111 || yaz_errno() == EAGAIN
1114 || yaz_errno() == EINPROGRESS
1116 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1120 h->io_pending = CS_WANT_READ;
1123 else if (yaz_errno() == 0)
1127 h->cerrno = CSYSERR;
1135 if (hasread > h->max_recv_bytes)
1137 h->cerrno = CSBUFSIZE;
1141 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1143 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1144 if (hasread > berlen)
1146 tomove = req = hasread - berlen;
1147 rest = tomove % CS_TCPIP_BUFCHUNK;
1149 req += CS_TCPIP_BUFCHUNK - rest;
1152 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1154 h->cerrno = CSYSERR;
1157 } else if (sp->altsize < req)
1158 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1160 h->cerrno = CSYSERR;
1163 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1165 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1167 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1168 *(*buf + berlen) = '\0';
1169 return berlen ? berlen : 1;
1175 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1176 * 0=connection closed.
1178 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1180 tcpip_state *sp = (tcpip_state *)h->cprivate;
1182 int tmpi, berlen, rest, req, tomove;
1183 int hasread = 0, res;
1185 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1186 if (sp->altlen) /* switch buffers */
1188 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1193 *bufsize = sp->altsize;
1194 hasread = sp->altlen;
1200 while (!(berlen = (*sp->complete)(*buf, hasread)))
1204 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1207 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1208 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1210 res = gnutls_record_recv(sp->session, *buf + hasread,
1214 TRC(fprintf(stderr, "gnutls_record_recv returned 0\n"));
1219 if (ssl_check_error(h, sp, res))
1225 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1227 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1228 if (hasread > berlen)
1230 tomove = req = hasread - berlen;
1231 rest = tomove % CS_TCPIP_BUFCHUNK;
1233 req += CS_TCPIP_BUFCHUNK - rest;
1236 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1238 } else if (sp->altsize < req)
1239 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1241 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1243 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1245 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1246 *(*buf + berlen) = '\0';
1247 return berlen ? berlen : 1;
1252 * Returns 1, 0 or -1
1253 * In nonblocking mode, you must call again with same buffer while
1254 * return value is 1.
1256 int tcpip_put(COMSTACK h, char *buf, int size)
1259 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1261 TRC(fprintf(stderr, "tcpip_put: h=%p size=%d\n", h, size));
1264 if (state->towrite < 0)
1266 state->towrite = size;
1269 else if (state->towrite != size)
1271 h->cerrno = CSWRONGBUF;
1274 while (state->towrite > state->written)
1277 send(h->iofile, buf + state->written, size -
1288 WSAGetLastError() == WSAEWOULDBLOCK
1290 yaz_errno() == EWOULDBLOCK
1292 #if EAGAIN != EWOULDBLOCK
1293 || yaz_errno() == EAGAIN
1297 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1299 || yaz_errno() == EINPROGRESS
1303 TRC(fprintf(stderr, " Flow control stop\n"));
1304 h->io_pending = CS_WANT_WRITE;
1307 return cont_connect(h);
1309 state->written += res;
1310 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1311 res, state->written, size));
1313 state->towrite = state->written = -1;
1314 TRC(fprintf(stderr, " Ok\n"));
1321 * Returns 1, 0 or -1
1322 * In nonblocking mode, you must call again with same buffer while
1323 * return value is 1.
1325 int ssl_put(COMSTACK h, char *buf, int size)
1328 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1330 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1333 if (state->towrite < 0)
1335 state->towrite = size;
1338 else if (state->towrite != size)
1340 h->cerrno = CSWRONGBUF;
1343 while (state->towrite > state->written)
1345 res = gnutls_record_send(state->session, buf + state->written,
1346 size - state->written);
1349 if (ssl_check_error(h, state, res))
1353 state->written += res;
1354 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1355 res, state->written, size));
1357 state->towrite = state->written = -1;
1358 TRC(fprintf(stderr, " Ok\n"));
1363 void tcpip_close(COMSTACK h)
1365 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1367 TRC(fprintf(stderr, "tcpip_close: h=%p pid=%d\n", h, getpid()));
1368 #if HAVE_GETADDRINFO
1369 xfree(sp->bind_host);
1371 if (sp->pipefd[0] != -1)
1373 yaz_thread_join(&sp->thread_id, 0);
1374 close(sp->pipefd[0]);
1375 close(sp->pipefd[1]);
1380 if (h->iofile != -1)
1384 gnutls_bye(sp->session, GNUTLS_SHUT_WR);
1387 closesocket(h->iofile);
1397 gnutls_deinit(sp->session);
1401 assert(sp->cred_ptr->ref > 0);
1403 if (--(sp->cred_ptr->ref) == 0)
1405 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1406 sp->cred_ptr->xcred, getpid()));
1407 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1408 xfree(sp->cred_ptr);
1413 #if HAVE_GETADDRINFO
1415 freeaddrinfo(sp->ai);
1420 xfree(sp->connect_request_buf);
1421 xfree(sp->connect_response_buf);
1426 const char *tcpip_addrstr(COMSTACK h)
1428 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1429 char *r = 0, *buf = sp->buf;
1431 #if HAVE_GETADDRINFO
1433 struct sockaddr_storage addr;
1434 YAZ_SOCKLEN_T len = sizeof(addr);
1436 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1438 h->cerrno = CSYSERR;
1441 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1443 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1452 struct sockaddr_in addr;
1453 YAZ_SOCKLEN_T len = sizeof(addr);
1454 struct hostent *host;
1456 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1458 h->cerrno = CSYSERR;
1461 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1463 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1464 sizeof(addr.sin_addr),
1466 r = (char*) host->h_name;
1469 r = inet_ntoa(addr.sin_addr);
1472 if (h->protocol == PROTO_HTTP)
1473 sprintf(buf, "http:%s", r);
1475 sprintf(buf, "tcp:%s", r);
1479 if (h->protocol == PROTO_HTTP)
1480 sprintf(buf, "https:%s", r);
1482 sprintf(buf, "ssl:%s", r);
1488 static int tcpip_set_blocking(COMSTACK p, int flags)
1493 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1494 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1497 flag = fcntl(p->iofile, F_GETFL, 0);
1498 if (flags & CS_FLAGS_BLOCKING)
1499 flag = flag & ~O_NONBLOCK; /* blocking */
1502 flag = flag | O_NONBLOCK; /* non-blocking */
1503 signal(SIGPIPE, SIG_IGN);
1505 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1514 /* gnutls_x509_crt_print appeared in 1.7.6. Memory leaks were fixed in 1.7.9.
1515 GNUTLS_CRT_PRINT_FULL appeared in 2.4.0. */
1516 #if GNUTLS_VERSION_NUMBER >= 0x020400
1517 #define USE_GNUTLS_X509_CRT_PRINT 1
1519 #define USE_GNUTLS_X509_CRT_PRINT 0
1523 #if USE_GNUTLS_X509_CRT_PRINT
1525 static const char *bin2hex(const void *bin, size_t bin_size)
1527 static char printable[110];
1528 const unsigned char *_bin = bin;
1534 for (i = 0; i < bin_size; i++)
1536 sprintf(print, "%.2x ", _bin[i]);
1542 static void x509_crt_print(gnutls_x509_crt_t cert)
1544 time_t expiration_time, activation_time;
1548 unsigned int algo, bits;
1550 expiration_time = gnutls_x509_crt_get_expiration_time(cert);
1551 activation_time = gnutls_x509_crt_get_activation_time(cert);
1553 printf("\tCertificate is valid since: %s", ctime(&activation_time));
1554 printf("\tCertificate expires: %s", ctime(&expiration_time));
1556 /* Print the serial number of the certificate. */
1557 size = sizeof(serial);
1558 gnutls_x509_crt_get_serial(cert, serial, &size);
1560 printf("\tCertificate serial number: %s\n", bin2hex(serial, size));
1562 /* Extract some of the public key algorithm's parameters
1564 algo = gnutls_x509_crt_get_pk_algorithm(cert, &bits);
1566 printf("Certificate public key: %s", gnutls_pk_algorithm_get_name(algo));
1568 /* Print the version of the X.509 certificate. */
1569 printf("\tCertificate version: #%d\n", gnutls_x509_crt_get_version(cert));
1572 gnutls_x509_crt_get_dn(cert, dn, &size);
1573 printf("\tDN: %s\n", dn);
1576 gnutls_x509_crt_get_issuer_dn(cert, dn, &size);
1577 printf("\tIssuer's DN: %s\n", dn);
1582 void cs_print_session_info(COMSTACK cs)
1585 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1586 if (cs->type == ssl_type && sp->session)
1588 const gnutls_datum_t *cert_list;
1589 unsigned i, cert_list_size;
1590 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1592 printf("X509 certificate\n");
1593 cert_list = gnutls_certificate_get_peers(sp->session,
1595 printf("Peer provided %u certificates\n", cert_list_size);
1596 for (i = 0; i < cert_list_size; i++)
1598 gnutls_x509_crt_t cert;
1599 #if USE_GNUTLS_X509_CRT_PRINT
1601 gnutls_datum_t cinfo;
1603 gnutls_x509_crt_init(&cert);
1604 gnutls_x509_crt_import(cert, &cert_list[i], GNUTLS_X509_FMT_DER);
1605 printf("Certificate info %d:\n", i + 1);
1606 #if USE_GNUTLS_X509_CRT_PRINT
1607 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL,
1611 printf("\t%s\n", cinfo.data);
1612 gnutls_free(cinfo.data);
1615 x509_crt_print(cert);
1617 gnutls_x509_crt_deinit(cert);
1624 void *cs_get_ssl(COMSTACK cs)
1626 /* doesn't do anything for GNUTLS */
1630 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1633 if (cs && cs->type == ssl_type)
1635 /* doesn't do anything for GNUTLS */
1642 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1645 if (cs && cs->type == ssl_type)
1647 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1648 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1649 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1656 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1660 #if USE_GNUTLS_X509_CRT_PRINT
1661 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1662 if (cs->type == ssl_type && sp->session)
1664 const gnutls_datum_t *cert_list;
1665 unsigned cert_list_size;
1666 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1668 cert_list = gnutls_certificate_get_peers(sp->session, &cert_list_size);
1669 if (cert_list_size > 0)
1671 gnutls_x509_crt_t cert;
1673 gnutls_datum_t cinfo;
1675 gnutls_x509_crt_init(&cert);
1676 gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER);
1678 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL, &cinfo);
1681 *buf = xstrdup((char *) cinfo.data);
1682 *len = strlen(*buf);
1683 gnutls_free(cinfo.data);
1684 gnutls_x509_crt_deinit(cert);
1687 gnutls_x509_crt_deinit(cert);
1695 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1697 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1699 int r = tcpip_put(h, state->connect_request_buf,
1700 state->connect_request_len);
1704 h->f_put = tcpip_put; /* switch to normal tcpip put */
1705 r = tcpip_put(h, buf, size);
1710 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1712 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1715 r = tcpip_get(h, &state->connect_response_buf,
1716 &state->connect_response_len);
1719 /* got the connect response completely */
1720 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1721 h->f_get = tcpip_get;
1722 return tcpip_get(h, buf, bufsize);
1729 * c-file-style: "Stroustrup"
1730 * indent-tabs-mode: nil
1732 * vim: shiftwidth=4 tabstop=8 expandtab