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;
265 sp->bind_host = xmalloc(strlen(bind_host) + 4);
266 strcpy(sp->bind_host, bind_host);
267 cp = strrchr(sp->bind_host, ':');
269 if (!cp || cp[1] == '\0')
270 strcat(sp->bind_host, ":0");
276 tcpip_state *sp = (tcpip_state *) p->cprivate;
277 sp->connect_request_buf = (char *) xmalloc(strlen(connect_host) + 30);
278 sprintf(sp->connect_request_buf, "CONNECT %s HTTP/1.0\r\n\r\n",
280 sp->connect_request_len = strlen(sp->connect_request_buf);
281 p->f_put = tcpip_put_connect;
282 p->f_get = tcpip_get_connect;
283 sp->complete = cs_complete_auto_head; /* only want HTTP header */
288 COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
289 const char *connect_host)
291 return yaz_tcpip_create2(s, flags, protocol, connect_host, 0);
295 static void tcpip_create_cred(COMSTACK cs)
297 tcpip_state *sp = (tcpip_state *) cs->cprivate;
298 sp->cred_ptr = (struct tcpip_cred_ptr *) xmalloc(sizeof(*sp->cred_ptr));
299 sp->cred_ptr->ref = 1;
300 gnutls_certificate_allocate_credentials(&sp->cred_ptr->xcred);
305 COMSTACK ssl_type(int s, int flags, int protocol, void *vp)
311 p = tcpip_type(s, flags, protocol, 0);
317 sp = (tcpip_state *) p->cprivate;
319 sp->session = (gnutls_session_t) vp;
320 /* note: we don't handle already opened socket in SSL mode - yet */
328 static int ssl_check_error(COMSTACK h, tcpip_state *sp, int res)
330 TRC(fprintf(stderr, "ssl_check_error error=%d fatal=%d msg=%s\n",
332 gnutls_error_is_fatal(res),
333 gnutls_strerror(res)));
334 if (res == GNUTLS_E_AGAIN || res == GNUTLS_E_INTERRUPTED)
336 int dir = gnutls_record_get_direction(sp->session);
337 TRC(fprintf(stderr, " -> incomplete dir=%d\n", dir));
338 h->io_pending = dir ? CS_WANT_WRITE : CS_WANT_READ;
341 h->cerrno = CSERRORSSL;
347 /* resolve using getaddrinfo */
348 struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port,
351 struct addrinfo hints, *res;
356 hints.ai_family = AF_UNSPEC;
357 hints.ai_socktype = SOCK_STREAM;
358 hints.ai_protocol = 0;
359 hints.ai_addrlen = 0;
360 hints.ai_addr = NULL;
361 hints.ai_canonname = NULL;
362 hints.ai_next = NULL;
364 strncpy(host, str, sizeof(host)-1);
365 host[sizeof(host)-1] = 0;
366 if ((p = strchr(host, '/')))
368 if ((p = strrchr(host, ':')))
374 if (!strcmp("@", host))
376 hints.ai_flags = AI_PASSIVE;
377 hints.ai_family = AF_UNSPEC;
378 error = getaddrinfo(0, port, &hints, &res);
381 else if (!strcmp("@4", host))
383 hints.ai_flags = AI_PASSIVE;
384 hints.ai_family = AF_INET;
385 error = getaddrinfo(0, port, &hints, &res);
388 else if (!strcmp("@6", host))
390 hints.ai_flags = AI_PASSIVE;
391 hints.ai_family = AF_INET6;
392 error = getaddrinfo(0, port, &hints, &res);
397 error = getaddrinfo(host, port, &hints, &res);
406 /* gethostbyname .. old systems */
407 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
412 short int port = default_port;
414 unsigned long tmpadd;
418 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
419 add->sin_family = AF_INET;
420 strncpy(buf, str, sizeof(buf)-1);
421 buf[sizeof(buf)-1] = 0;
422 if ((p = strchr(buf, '/')))
424 if ((p = strrchr(buf, ':')))
429 add->sin_port = htons(port);
430 if (!strcmp("@", buf))
432 add->sin_addr.s_addr = INADDR_ANY;
434 else if ((tmpadd = inet_addr(buf)) != -1)
436 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
438 else if ((hp = gethostbyname(buf)))
440 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
441 sizeof(struct in_addr));
449 static struct addrinfo *create_net_socket(COMSTACK h)
451 tcpip_state *sp = (tcpip_state *)h->cprivate;
453 struct addrinfo *ai = 0;
454 if (sp->ipv6_only >= 0)
456 for (ai = sp->ai; ai; ai = ai->ai_next)
458 if (ai->ai_family == AF_INET6)
460 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
468 for (ai = sp->ai; ai; ai = ai->ai_next)
470 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
477 TRC(fprintf(stderr, "First socket fd=%d\n", s));
480 if (ai->ai_family == AF_INET6 && sp->ipv6_only >= 0 &&
481 setsockopt(h->iofile,
483 IPV6_V6ONLY, &sp->ipv6_only, sizeof(sp->ipv6_only)))
493 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
494 &one, sizeof(one)) < 0)
500 ai = tcpip_getaddrinfo(sp->bind_host, "0", &ipv6_only);
505 for (a = ai; a; a = a->ai_next)
507 r = bind(h->iofile, a->ai_addr, a->ai_addrlen);
520 if (!tcpip_set_blocking(h, h->flags))
527 void *resolver_thread(void *arg)
529 COMSTACK h = (COMSTACK) arg;
530 tcpip_state *sp = (tcpip_state *)h->cprivate;
534 freeaddrinfo(sp->ai);
535 sp->ai = tcpip_getaddrinfo(sp->hoststr, sp->port, &sp->ipv6_only);
536 write(sp->pipefd[1], "1", 1);
540 static struct addrinfo *wait_resolver_thread(COMSTACK h)
542 tcpip_state *sp = (tcpip_state *)h->cprivate;
545 read(sp->pipefd[0], &buf, 1);
546 yaz_thread_join(&sp->thread_id, 0);
547 close(sp->pipefd[0]);
548 close(sp->pipefd[1]);
551 return create_net_socket(h);
556 void *tcpip_straddr(COMSTACK h, const char *str)
558 tcpip_state *sp = (tcpip_state *)h->cprivate;
559 const char *port = "210";
564 if (h->protocol == PROTO_HTTP)
566 if (h->type == ssl_type)
572 if (h->flags & CS_FLAGS_DNS_NO_BLOCK)
574 if (sp->pipefd[0] != -1)
576 if (pipe(sp->pipefd) == -1)
581 sp->hoststr = xstrdup(str);
582 sp->thread_id = yaz_thread_create(resolver_thread, h);
587 freeaddrinfo(sp->ai);
588 sp->ai = tcpip_getaddrinfo(str, port, &sp->ipv6_only);
589 if (sp->ai && h->state == CS_ST_UNBND)
591 return create_net_socket(h);
597 void *tcpip_straddr(COMSTACK h, const char *str)
599 tcpip_state *sp = (tcpip_state *)h->cprivate;
601 if (h->protocol == PROTO_HTTP)
603 if (h->type == ssl_type)
611 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
613 if (h->state == CS_ST_UNBND)
616 s = socket(AF_INET, SOCK_STREAM, 0);
621 if (!tcpip_set_blocking(h, h->flags))
628 int tcpip_more(COMSTACK h)
630 tcpip_state *sp = (tcpip_state *)h->cprivate;
632 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
635 static int cont_connect(COMSTACK h)
638 tcpip_state *sp = (tcpip_state *)h->cprivate;
639 struct addrinfo *ai = sp->ai_connect;
640 while (ai && (ai = ai->ai_next))
643 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
647 if (h->type == ssl_type && sp->session)
649 gnutls_bye(sp->session, GNUTLS_SHUT_WR);
650 gnutls_deinit(sp->session);
655 closesocket(h->iofile);
659 TRC(fprintf(stderr, "Other socket call fd=%d\n", s));
660 h->state = CS_ST_UNBND;
662 tcpip_set_blocking(h, h->flags);
663 return tcpip_connect(h, ai);
673 * connect(2) will block (sometimes) - nothing we can do short of doing
674 * weird things like spawning subprocesses or threading or some weird junk
677 int tcpip_connect(COMSTACK h, void *address)
680 struct addrinfo *ai = (struct addrinfo *) address;
681 tcpip_state *sp = (tcpip_state *)h->cprivate;
683 struct sockaddr_in *add = (struct sockaddr_in *) address;
686 TRC(fprintf(stderr, "tcpip_connect h=%p\n", h));
688 if (h->state != CS_ST_UNBND)
690 h->cerrno = CSOUTSTATE;
695 if (sp->pipefd[0] != -1)
697 if (h->flags & CS_FLAGS_BLOCKING)
699 ai = wait_resolver_thread(h);
705 h->event = CS_CONNECT;
706 h->state = CS_ST_CONNECTING;
707 h->io_pending = CS_WANT_READ;
708 h->iofile = sp->pipefd[0];
713 r = connect(h->iofile, ai->ai_addr, ai->ai_addrlen);
716 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
721 if (WSAGetLastError() == WSAEWOULDBLOCK)
723 h->event = CS_CONNECT;
724 h->state = CS_ST_CONNECTING;
725 h->io_pending = CS_WANT_WRITE;
729 if (yaz_errno() == EINPROGRESS)
731 TRC(fprintf(stderr, "Pending fd=%d\n", h->iofile));
732 h->event = CS_CONNECT;
733 h->state = CS_ST_CONNECTING;
734 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
738 return cont_connect(h);
740 h->event = CS_CONNECT;
741 h->state = CS_ST_CONNECTING;
743 return tcpip_rcvconnect(h);
749 int tcpip_rcvconnect(COMSTACK h)
751 tcpip_state *sp = (tcpip_state *)h->cprivate;
752 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
754 if (h->state == CS_ST_DATAXFER)
758 if (sp->pipefd[0] != -1)
760 struct addrinfo *ai = wait_resolver_thread(h);
763 h->state = CS_ST_UNBND;
764 return tcpip_connect(h, ai);
768 if (h->state != CS_ST_CONNECTING)
770 h->cerrno = CSOUTSTATE;
774 if (h->type == ssl_type && !sp->session)
776 tcpip_create_cred(h);
777 gnutls_init(&sp->session, GNUTLS_CLIENT);
778 gnutls_set_default_priority(sp->session);
779 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
780 sp->cred_ptr->xcred);
781 /* cast to intermediate size_t to avoid GCC warning. */
782 gnutls_transport_set_ptr(sp->session,
783 (gnutls_transport_ptr_t)
788 int res = gnutls_handshake(sp->session);
791 if (ssl_check_error(h, sp, res))
793 return cont_connect(h);
798 h->state = CS_ST_DATAXFER;
802 #define CERTF "ztest.pem"
803 #define KEYF "ztest.pem"
805 static int tcpip_bind(COMSTACK h, void *address, int mode)
808 tcpip_state *sp = (tcpip_state *)h->cprivate;
810 struct addrinfo *ai = (struct addrinfo *) address;
812 struct sockaddr *addr = (struct sockaddr *)address;
822 if (sp->pipefd[0] != -1)
824 ai = wait_resolver_thread(h);
831 if (h->type == ssl_type && !sp->session)
834 tcpip_create_cred(h);
835 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
838 GNUTLS_X509_FMT_PEM);
839 if (res != GNUTLS_E_SUCCESS)
841 h->cerrno = CSERRORSSL;
846 TRC(fprintf(stderr, "tcpip_bind\n"));
849 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
850 &one, sizeof(one)) < 0)
857 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
858 freeaddrinfo(sp->ai);
861 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
868 /* Allow a maximum-sized backlog of waiting-to-connect clients */
869 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
874 h->state = CS_ST_IDLE;
875 h->event = CS_LISTEN;
879 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
880 int (*check_ip)(void *cd, const char *a, int len, int t),
884 /* we don't get peer address on Windows (via accept) */
886 struct sockaddr_in addr;
887 YAZ_SOCKLEN_T len = sizeof(addr);
890 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
891 if (h->state != CS_ST_IDLE)
893 h->cerrno = CSOUTSTATE;
897 h->newfd = accept(h->iofile, 0, 0);
899 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
905 WSAGetLastError() == WSAEWOULDBLOCK
907 yaz_errno() == EWOULDBLOCK
909 #if EAGAIN != EWOULDBLOCK
910 || yaz_errno() == EAGAIN
915 h->cerrno = CSNODATA;
919 shutdown(h->iofile, SD_RECEIVE);
921 shutdown(h->iofile, SHUT_RD);
923 listen(h->iofile, SOMAXCONN);
932 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
933 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
936 if (check_ip && (*check_ip)(cd, (const char *) &addr,
937 sizeof(addr), AF_INET))
941 closesocket(h->newfd);
949 h->state = CS_ST_INCON;
953 COMSTACK tcpip_accept(COMSTACK h)
957 unsigned long tru = 1;
960 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
961 if (h->state == CS_ST_INCON)
963 tcpip_state *st = (tcpip_state *)h->cprivate;
964 tcpip_state *state = tcpip_state_create();
965 cnew = (COMSTACK) xmalloc(sizeof(*cnew));
967 memcpy(cnew, h, sizeof(*h));
968 cnew->iofile = h->newfd;
969 cnew->io_pending = 0;
970 cnew->cprivate = state;
972 if (!tcpip_set_blocking(cnew, cnew->flags))
978 closesocket(h->newfd);
989 cnew->state = CS_ST_ACCEPT;
990 h->state = CS_ST_IDLE;
993 state->cred_ptr = st->cred_ptr;
998 (state->cred_ptr->ref)++;
999 gnutls_init(&state->session, GNUTLS_SERVER);
1000 if (!state->session)
1006 res = gnutls_set_default_priority(state->session);
1007 if (res != GNUTLS_E_SUCCESS)
1013 res = gnutls_credentials_set(state->session,
1014 GNUTLS_CRD_CERTIFICATE,
1015 st->cred_ptr->xcred);
1016 if (res != GNUTLS_E_SUCCESS)
1022 /* cast to intermediate size_t to avoid GCC warning. */
1023 gnutls_transport_set_ptr(state->session,
1024 (gnutls_transport_ptr_t)
1025 (size_t) cnew->iofile);
1030 if (h->state == CS_ST_ACCEPT)
1033 tcpip_state *state = (tcpip_state *)h->cprivate;
1036 int res = gnutls_handshake(state->session);
1039 if (ssl_check_error(h, state, res))
1041 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
1044 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
1048 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
1054 h->cerrno = CSOUTSTATE;
1058 h->state = CS_ST_DATAXFER;
1063 #define CS_TCPIP_BUFCHUNK 4096
1066 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1067 * 0=connection closed.
1069 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1071 tcpip_state *sp = (tcpip_state *)h->cprivate;
1073 int tmpi, berlen, rest, req, tomove;
1074 int hasread = 0, res;
1076 TRC(fprintf(stderr, "tcpip_get: h=%p bufsize=%d\n", h, *bufsize));
1077 if (sp->altlen) /* switch buffers */
1079 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1084 *bufsize = sp->altsize;
1085 hasread = sp->altlen;
1091 while (!(berlen = (*sp->complete)(*buf, hasread)))
1095 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1097 h->cerrno = CSYSERR;
1101 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1102 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1104 h->cerrno = CSYSERR;
1109 /* unfortunatly, sun sometimes forgets to set errno in recv
1110 when EWOULDBLOCK etc. would be required (res = -1) */
1112 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1113 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1116 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1117 strerror(yaz_errno())));
1119 if (WSAGetLastError() == WSAEWOULDBLOCK)
1121 h->io_pending = CS_WANT_READ;
1126 h->cerrno = CSYSERR;
1130 if (yaz_errno() == EWOULDBLOCK
1132 #if EAGAIN != EWOULDBLOCK
1133 || yaz_errno() == EAGAIN
1136 || yaz_errno() == EINPROGRESS
1138 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1142 h->io_pending = CS_WANT_READ;
1145 else if (yaz_errno() == 0)
1149 h->cerrno = CSYSERR;
1157 if (hasread > h->max_recv_bytes)
1159 h->cerrno = CSBUFSIZE;
1163 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1165 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1166 if (hasread > berlen)
1168 tomove = req = hasread - berlen;
1169 rest = tomove % CS_TCPIP_BUFCHUNK;
1171 req += CS_TCPIP_BUFCHUNK - rest;
1174 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1176 h->cerrno = CSYSERR;
1179 } else if (sp->altsize < req)
1180 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1182 h->cerrno = CSYSERR;
1185 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1187 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1189 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1190 *(*buf + berlen) = '\0';
1191 return berlen ? berlen : 1;
1197 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1198 * 0=connection closed.
1200 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1202 tcpip_state *sp = (tcpip_state *)h->cprivate;
1204 int tmpi, berlen, rest, req, tomove;
1205 int hasread = 0, res;
1207 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1208 if (sp->altlen) /* switch buffers */
1210 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1215 *bufsize = sp->altsize;
1216 hasread = sp->altlen;
1222 while (!(berlen = (*sp->complete)(*buf, hasread)))
1226 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1229 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1230 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1232 res = gnutls_record_recv(sp->session, *buf + hasread,
1236 TRC(fprintf(stderr, "gnutls_record_recv returned 0\n"));
1241 if (ssl_check_error(h, sp, res))
1247 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1249 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1250 if (hasread > berlen)
1252 tomove = req = hasread - berlen;
1253 rest = tomove % CS_TCPIP_BUFCHUNK;
1255 req += CS_TCPIP_BUFCHUNK - rest;
1258 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1260 } else if (sp->altsize < req)
1261 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1263 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1265 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1267 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1268 *(*buf + berlen) = '\0';
1269 return berlen ? berlen : 1;
1274 * Returns 1, 0 or -1
1275 * In nonblocking mode, you must call again with same buffer while
1276 * return value is 1.
1278 int tcpip_put(COMSTACK h, char *buf, int size)
1281 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1283 TRC(fprintf(stderr, "tcpip_put: h=%p size=%d\n", h, size));
1286 if (state->towrite < 0)
1288 state->towrite = size;
1291 else if (state->towrite != size)
1293 h->cerrno = CSWRONGBUF;
1296 while (state->towrite > state->written)
1299 send(h->iofile, buf + state->written, size -
1310 WSAGetLastError() == WSAEWOULDBLOCK
1312 yaz_errno() == EWOULDBLOCK
1314 #if EAGAIN != EWOULDBLOCK
1315 || yaz_errno() == EAGAIN
1319 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1321 || yaz_errno() == EINPROGRESS
1325 TRC(fprintf(stderr, " Flow control stop\n"));
1326 h->io_pending = CS_WANT_WRITE;
1329 return cont_connect(h);
1331 state->written += res;
1332 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1333 res, state->written, size));
1335 state->towrite = state->written = -1;
1336 TRC(fprintf(stderr, " Ok\n"));
1343 * Returns 1, 0 or -1
1344 * In nonblocking mode, you must call again with same buffer while
1345 * return value is 1.
1347 int ssl_put(COMSTACK h, char *buf, int size)
1350 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1352 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1355 if (state->towrite < 0)
1357 state->towrite = size;
1360 else if (state->towrite != size)
1362 h->cerrno = CSWRONGBUF;
1365 while (state->towrite > state->written)
1367 res = gnutls_record_send(state->session, buf + state->written,
1368 size - state->written);
1371 if (ssl_check_error(h, state, res))
1375 state->written += res;
1376 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1377 res, state->written, size));
1379 state->towrite = state->written = -1;
1380 TRC(fprintf(stderr, " Ok\n"));
1385 void tcpip_close(COMSTACK h)
1387 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1389 TRC(fprintf(stderr, "tcpip_close: h=%p pid=%d\n", h, getpid()));
1390 #if HAVE_GETADDRINFO
1391 xfree(sp->bind_host);
1393 if (sp->pipefd[0] != -1)
1395 yaz_thread_join(&sp->thread_id, 0);
1396 close(sp->pipefd[0]);
1397 close(sp->pipefd[1]);
1402 if (h->iofile != -1)
1406 gnutls_bye(sp->session, GNUTLS_SHUT_WR);
1409 closesocket(h->iofile);
1419 gnutls_deinit(sp->session);
1423 assert(sp->cred_ptr->ref > 0);
1425 if (--(sp->cred_ptr->ref) == 0)
1427 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1428 sp->cred_ptr->xcred, getpid()));
1429 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1430 xfree(sp->cred_ptr);
1435 #if HAVE_GETADDRINFO
1437 freeaddrinfo(sp->ai);
1442 xfree(sp->connect_request_buf);
1443 xfree(sp->connect_response_buf);
1448 const char *tcpip_addrstr(COMSTACK h)
1450 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1451 char *r = 0, *buf = sp->buf;
1453 #if HAVE_GETADDRINFO
1455 struct sockaddr_storage addr;
1456 YAZ_SOCKLEN_T len = sizeof(addr);
1458 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1460 h->cerrno = CSYSERR;
1463 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1465 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1474 struct sockaddr_in addr;
1475 YAZ_SOCKLEN_T len = sizeof(addr);
1476 struct hostent *host;
1478 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1480 h->cerrno = CSYSERR;
1483 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1485 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1486 sizeof(addr.sin_addr),
1488 r = (char*) host->h_name;
1491 r = inet_ntoa(addr.sin_addr);
1494 if (h->protocol == PROTO_HTTP)
1495 sprintf(buf, "http:%s", r);
1497 sprintf(buf, "tcp:%s", r);
1501 if (h->protocol == PROTO_HTTP)
1502 sprintf(buf, "https:%s", r);
1504 sprintf(buf, "ssl:%s", r);
1510 static int tcpip_set_blocking(COMSTACK p, int flags)
1515 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1516 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1519 flag = fcntl(p->iofile, F_GETFL, 0);
1520 if (flags & CS_FLAGS_BLOCKING)
1521 flag = flag & ~O_NONBLOCK; /* blocking */
1524 flag = flag | O_NONBLOCK; /* non-blocking */
1525 signal(SIGPIPE, SIG_IGN);
1527 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1536 /* gnutls_x509_crt_print appeared in 1.7.6. Memory leaks were fixed in 1.7.9.
1537 GNUTLS_CRT_PRINT_FULL appeared in 2.4.0. */
1538 #if GNUTLS_VERSION_NUMBER >= 0x020400
1539 #define USE_GNUTLS_X509_CRT_PRINT 1
1541 #define USE_GNUTLS_X509_CRT_PRINT 0
1545 #if USE_GNUTLS_X509_CRT_PRINT
1547 static const char *bin2hex(const void *bin, size_t bin_size)
1549 static char printable[110];
1550 const unsigned char *_bin = bin;
1556 for (i = 0; i < bin_size; i++)
1558 sprintf(print, "%.2x ", _bin[i]);
1564 static void x509_crt_print(gnutls_x509_crt_t cert)
1566 time_t expiration_time, activation_time;
1570 unsigned int algo, bits;
1572 expiration_time = gnutls_x509_crt_get_expiration_time(cert);
1573 activation_time = gnutls_x509_crt_get_activation_time(cert);
1575 printf("\tCertificate is valid since: %s", ctime(&activation_time));
1576 printf("\tCertificate expires: %s", ctime(&expiration_time));
1578 /* Print the serial number of the certificate. */
1579 size = sizeof(serial);
1580 gnutls_x509_crt_get_serial(cert, serial, &size);
1582 printf("\tCertificate serial number: %s\n", bin2hex(serial, size));
1584 /* Extract some of the public key algorithm's parameters
1586 algo = gnutls_x509_crt_get_pk_algorithm(cert, &bits);
1588 printf("Certificate public key: %s", gnutls_pk_algorithm_get_name(algo));
1590 /* Print the version of the X.509 certificate. */
1591 printf("\tCertificate version: #%d\n", gnutls_x509_crt_get_version(cert));
1594 gnutls_x509_crt_get_dn(cert, dn, &size);
1595 printf("\tDN: %s\n", dn);
1598 gnutls_x509_crt_get_issuer_dn(cert, dn, &size);
1599 printf("\tIssuer's DN: %s\n", dn);
1604 void cs_print_session_info(COMSTACK cs)
1607 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1608 if (cs->type == ssl_type && sp->session)
1610 const gnutls_datum_t *cert_list;
1611 unsigned i, cert_list_size;
1612 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1614 printf("X509 certificate\n");
1615 cert_list = gnutls_certificate_get_peers(sp->session,
1617 printf("Peer provided %u certificates\n", cert_list_size);
1618 for (i = 0; i < cert_list_size; i++)
1620 gnutls_x509_crt_t cert;
1621 #if USE_GNUTLS_X509_CRT_PRINT
1623 gnutls_datum_t cinfo;
1625 gnutls_x509_crt_init(&cert);
1626 gnutls_x509_crt_import(cert, &cert_list[i], GNUTLS_X509_FMT_DER);
1627 printf("Certificate info %d:\n", i + 1);
1628 #if USE_GNUTLS_X509_CRT_PRINT
1629 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL,
1633 printf("\t%s\n", cinfo.data);
1634 gnutls_free(cinfo.data);
1637 x509_crt_print(cert);
1639 gnutls_x509_crt_deinit(cert);
1646 void *cs_get_ssl(COMSTACK cs)
1648 /* doesn't do anything for GNUTLS */
1652 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1655 if (cs && cs->type == ssl_type)
1657 /* doesn't do anything for GNUTLS */
1664 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1667 if (cs && cs->type == ssl_type)
1669 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1670 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1671 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1678 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1682 #if USE_GNUTLS_X509_CRT_PRINT
1683 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1684 if (cs->type == ssl_type && sp->session)
1686 const gnutls_datum_t *cert_list;
1687 unsigned cert_list_size;
1688 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1690 cert_list = gnutls_certificate_get_peers(sp->session, &cert_list_size);
1691 if (cert_list_size > 0)
1693 gnutls_x509_crt_t cert;
1695 gnutls_datum_t cinfo;
1697 gnutls_x509_crt_init(&cert);
1698 gnutls_x509_crt_import(cert, &cert_list[0], GNUTLS_X509_FMT_DER);
1700 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL, &cinfo);
1703 *buf = xstrdup((char *) cinfo.data);
1704 *len = strlen(*buf);
1705 gnutls_free(cinfo.data);
1706 gnutls_x509_crt_deinit(cert);
1709 gnutls_x509_crt_deinit(cert);
1717 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1719 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1721 int r = tcpip_put(h, state->connect_request_buf,
1722 state->connect_request_len);
1726 h->f_put = tcpip_put; /* switch to normal tcpip put */
1727 r = tcpip_put(h, buf, size);
1732 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1734 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1737 r = tcpip_get(h, &state->connect_response_buf,
1738 &state->connect_response_len);
1741 /* got the connect response completely */
1742 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1743 h->f_get = tcpip_get;
1744 return tcpip_get(h, buf, bufsize);
1751 * c-file-style: "Stroustrup"
1752 * indent-tabs-mode: nil
1754 * vim: shiftwidth=4 tabstop=8 expandtab