1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2013 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>
66 #if HAVE_OPENSSL_SSL_H
67 #include <openssl/ssl.h>
68 #include <openssl/err.h>
72 #include <yaz/comstack.h>
73 #include <yaz/tcpip.h>
74 #include <yaz/errno.h>
76 static void tcpip_close(COMSTACK h);
77 static int tcpip_put(COMSTACK h, char *buf, int size);
78 static int tcpip_get(COMSTACK h, char **buf, int *bufsize);
79 static int tcpip_put_connect(COMSTACK h, char *buf, int size);
80 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize);
81 static int tcpip_connect(COMSTACK h, void *address);
82 static int tcpip_more(COMSTACK h);
83 static int tcpip_rcvconnect(COMSTACK h);
84 static int tcpip_bind(COMSTACK h, void *address, int mode);
85 static int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
86 int (*check_ip)(void *cd, const char *a, int len, int type),
88 static int tcpip_set_blocking(COMSTACK p, int blocking);
91 static int ssl_get(COMSTACK h, char **buf, int *bufsize);
92 static int ssl_put(COMSTACK h, char *buf, int size);
95 static COMSTACK tcpip_accept(COMSTACK h);
96 static const char *tcpip_addrstr(COMSTACK h);
97 static void *tcpip_straddr(COMSTACK h, const char *str);
105 #ifndef YAZ_SOCKLEN_T
106 #define YAZ_SOCKLEN_T int
110 struct tcpip_cred_ptr {
111 gnutls_certificate_credentials_t xcred;
116 /* this state is used for both SSL and straight TCP/IP */
117 typedef struct tcpip_state
119 char *altbuf; /* alternate buffer for surplus data */
120 int altsize; /* size as xmalloced */
121 int altlen; /* length of data or 0 if none */
123 int written; /* -1 if we aren't writing */
124 int towrite; /* to verify against user input */
125 int (*complete)(const char *buf, int len); /* length/complete. */
129 struct sockaddr_in addr; /* returned by cs_straddr */
131 char buf[128]; /* returned by cs_addrstr */
133 struct tcpip_cred_ptr *cred_ptr;
134 gnutls_session_t session;
135 char cert_fname[256];
136 #elif HAVE_OPENSSL_SSL_H
137 SSL_CTX *ctx; /* current CTX. */
138 SSL_CTX *ctx_alloc; /* If =ctx it is owned by CS. If 0 it is not owned */
140 char cert_fname[256];
142 char *connect_request_buf;
143 int connect_request_len;
144 char *connect_response_buf;
145 int connect_response_len;
149 static int tcpip_init(void)
151 static int initialized = 0;
157 requested = MAKEWORD(1, 1);
158 if (WSAStartup(requested, &wd))
165 static int tcpip_init(void)
172 * This function is always called through the cs_create() macro.
173 * s >= 0: socket has already been established for us.
175 COMSTACK tcpip_type(int s, int flags, int protocol, void *vp)
182 if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
184 if (!(sp = (struct tcpip_state *)(p->cprivate =
185 xmalloc(sizeof(tcpip_state)))))
192 p->type = tcpip_type;
193 p->protocol = (enum oid_proto) protocol;
195 p->f_connect = tcpip_connect;
196 p->f_rcvconnect = tcpip_rcvconnect;
197 p->f_get = tcpip_get;
198 p->f_put = tcpip_put;
199 p->f_close = tcpip_close;
200 p->f_more = tcpip_more;
201 p->f_bind = tcpip_bind;
202 p->f_listen = tcpip_listen;
203 p->f_accept = tcpip_accept;
204 p->f_addrstr = tcpip_addrstr;
205 p->f_straddr = tcpip_straddr;
206 p->f_set_blocking = tcpip_set_blocking;
207 p->max_recv_bytes = 128 * 1024 * 1024;
209 p->state = s < 0 ? CS_ST_UNBND : CS_ST_IDLE; /* state of line */
217 strcpy(sp->cert_fname, "yaz.pem");
218 #elif HAVE_OPENSSL_SSL_H
219 sp->ctx = sp->ctx_alloc = 0;
221 strcpy(sp->cert_fname, "yaz.pem");
228 sp->altsize = sp->altlen = 0;
229 sp->towrite = sp->written = -1;
230 sp->complete = cs_complete_auto;
232 sp->connect_request_buf = 0;
233 sp->connect_request_len = 0;
234 sp->connect_response_buf = 0;
235 sp->connect_response_len = 0;
237 p->timeout = COMSTACK_DEFAULT_TIMEOUT;
238 TRC(fprintf(stderr, "Created new TCPIP comstack h=%p\n", p));
243 COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
244 const char *connect_host)
246 COMSTACK p = tcpip_type(s, flags, protocol, 0);
251 tcpip_state *sp = (tcpip_state *) p->cprivate;
252 sp->connect_request_buf = (char *) xmalloc(strlen(connect_host) + 30);
253 sprintf(sp->connect_request_buf, "CONNECT %s HTTP/1.0\r\n\r\n",
255 sp->connect_request_len = strlen(sp->connect_request_buf);
256 p->f_put = tcpip_put_connect;
257 p->f_get = tcpip_get_connect;
258 sp->complete = cs_complete_auto_head; /* only want HTTP header */
264 static void tcpip_create_cred(COMSTACK cs)
266 tcpip_state *sp = (tcpip_state *) cs->cprivate;
267 sp->cred_ptr = (struct tcpip_cred_ptr *) xmalloc(sizeof(*sp->cred_ptr));
268 sp->cred_ptr->ref = 1;
269 gnutls_certificate_allocate_credentials(&sp->cred_ptr->xcred);
274 COMSTACK ssl_type(int s, int flags, int protocol, void *vp)
282 p = tcpip_type(s, flags, protocol, 0);
288 sp = (tcpip_state *) p->cprivate;
291 sp->session = (gnutls_session_t) vp;
292 #elif HAVE_OPENSSL_SSL_H
293 sp->ctx = (SSL_CTX *) vp; /* may be NULL */
295 /* note: we don't handle already opened socket in SSL mode - yet */
301 static int ssl_check_error(COMSTACK h, tcpip_state *sp, int res)
303 #if HAVE_OPENSSL_SSL_H
304 int err = SSL_get_error(sp->ssl, res);
305 TRC(fprintf(stderr, "got err=%d\n", err));
306 if (err == SSL_ERROR_WANT_READ)
308 TRC(fprintf(stderr, " -> SSL_ERROR_WANT_READ\n"));
309 h->io_pending = CS_WANT_READ;
312 if (err == SSL_ERROR_WANT_WRITE)
314 TRC(fprintf(stderr, " -> SSL_ERROR_WANT_WRITE\n"));
315 h->io_pending = CS_WANT_WRITE;
319 TRC(fprintf(stderr, "ssl_check_error error=%d fatal=%d msg=%s\n",
321 gnutls_error_is_fatal(res),
322 gnutls_strerror(res)));
323 if (res == GNUTLS_E_AGAIN || res == GNUTLS_E_INTERRUPTED)
325 int dir = gnutls_record_get_direction(sp->session);
326 TRC(fprintf(stderr, " -> incomplete dir=%d\n", dir));
327 h->io_pending = dir ? CS_WANT_WRITE : CS_WANT_READ;
331 h->cerrno = CSERRORSSL;
337 /* resolve using getaddrinfo */
338 struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port,
341 struct addrinfo hints, *res;
346 hints.ai_family = AF_UNSPEC;
347 hints.ai_socktype = SOCK_STREAM;
348 hints.ai_protocol = 0;
349 hints.ai_addrlen = 0;
350 hints.ai_addr = NULL;
351 hints.ai_canonname = NULL;
352 hints.ai_next = NULL;
354 strncpy(host, str, sizeof(host)-1);
355 host[sizeof(host)-1] = 0;
356 if ((p = strchr(host, '/')))
358 if ((p = strrchr(host, ':')))
364 if (!strcmp("@", host))
366 hints.ai_flags = AI_PASSIVE;
367 hints.ai_family = AF_UNSPEC;
368 error = getaddrinfo(0, port, &hints, &res);
371 else if (!strcmp("@4", host))
373 hints.ai_flags = AI_PASSIVE;
374 hints.ai_family = AF_INET;
375 error = getaddrinfo(0, port, &hints, &res);
378 else if (!strcmp("@6", host))
380 hints.ai_flags = AI_PASSIVE;
381 hints.ai_family = AF_INET6;
382 error = getaddrinfo(0, port, &hints, &res);
387 error = getaddrinfo(host, port, &hints, &res);
396 /* gethostbyname .. old systems */
397 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
402 short int port = default_port;
404 unsigned long tmpadd;
408 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
409 add->sin_family = AF_INET;
410 strncpy(buf, str, sizeof(buf)-1);
411 buf[sizeof(buf)-1] = 0;
412 if ((p = strchr(buf, '/')))
414 if ((p = strrchr(buf, ':')))
419 add->sin_port = htons(port);
420 if (!strcmp("@", buf))
422 add->sin_addr.s_addr = INADDR_ANY;
424 else if ((tmpadd = inet_addr(buf)) != -1)
426 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
428 else if ((hp = gethostbyname(buf)))
430 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
431 sizeof(struct in_addr));
439 void *tcpip_straddr(COMSTACK h, const char *str)
441 tcpip_state *sp = (tcpip_state *)h->cprivate;
442 const char *port = "210";
443 struct addrinfo *ai = 0;
445 if (h->protocol == PROTO_HTTP)
447 if (h->type == ssl_type)
456 freeaddrinfo(sp->ai);
457 sp->ai = tcpip_getaddrinfo(str, port, &ipv6_only);
458 if (sp->ai && h->state == CS_ST_UNBND)
461 for (ai = sp->ai; ai; ai = ai->ai_next)
463 if (ai->ai_family == AF_INET6)
465 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
472 for (ai = sp->ai; ai; ai = ai->ai_next)
474 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
483 if (ai->ai_family == AF_INET6 && ipv6_only >= 0 &&
484 setsockopt(h->iofile,
486 IPV6_V6ONLY, &ipv6_only, sizeof(ipv6_only)))
488 if (!tcpip_set_blocking(h, h->flags))
494 void *tcpip_straddr(COMSTACK h, const char *str)
496 tcpip_state *sp = (tcpip_state *)h->cprivate;
498 if (h->protocol == PROTO_HTTP)
500 if (h->type == ssl_type)
508 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
510 if (h->state == CS_ST_UNBND)
513 s = socket(AF_INET, SOCK_STREAM, 0);
518 if (!tcpip_set_blocking(h, h->flags))
525 int tcpip_more(COMSTACK h)
527 tcpip_state *sp = (tcpip_state *)h->cprivate;
529 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
533 * connect(2) will block (sometimes) - nothing we can do short of doing
534 * weird things like spawning subprocesses or threading or some weird junk
537 int tcpip_connect(COMSTACK h, void *address)
540 struct addrinfo *ai = (struct addrinfo *) address;
541 tcpip_state *sp = (tcpip_state *)h->cprivate;
543 struct sockaddr_in *add = (struct sockaddr_in *) address;
546 TRC(fprintf(stderr, "tcpip_connect h=%p\n", h));
548 if (h->state != CS_ST_UNBND)
550 h->cerrno = CSOUTSTATE;
554 r = connect(h->iofile, ai->ai_addr, ai->ai_addrlen);
555 freeaddrinfo(sp->ai);
558 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
563 if (WSAGetLastError() == WSAEWOULDBLOCK)
565 h->event = CS_CONNECT;
566 h->state = CS_ST_CONNECTING;
567 h->io_pending = CS_WANT_WRITE;
571 if (yaz_errno() == EINPROGRESS)
573 h->event = CS_CONNECT;
574 h->state = CS_ST_CONNECTING;
575 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
582 h->event = CS_CONNECT;
583 h->state = CS_ST_CONNECTING;
585 return tcpip_rcvconnect(h);
591 int tcpip_rcvconnect(COMSTACK h)
594 tcpip_state *sp = (tcpip_state *)h->cprivate;
596 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
598 if (h->state == CS_ST_DATAXFER)
600 if (h->state != CS_ST_CONNECTING)
602 h->cerrno = CSOUTSTATE;
606 if (h->type == ssl_type && !sp->session)
608 gnutls_global_init();
609 tcpip_create_cred(h);
610 gnutls_init(&sp->session, GNUTLS_CLIENT);
611 gnutls_set_default_priority(sp->session);
612 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
613 sp->cred_ptr->xcred);
614 /* cast to intermediate size_t to avoid GCC warning. */
615 gnutls_transport_set_ptr(sp->session,
616 (gnutls_transport_ptr_t)
621 int res = gnutls_handshake(sp->session);
624 if (ssl_check_error(h, sp, res))
629 #elif HAVE_OPENSSL_SSL_H
630 if (h->type == ssl_type && !sp->ctx)
633 SSL_load_error_strings();
635 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_client_method());
638 h->cerrno = CSERRORSSL;
648 sp->ssl = SSL_new(sp->ctx);
649 SSL_set_fd(sp->ssl, h->iofile);
651 res = SSL_connect(sp->ssl);
654 if (ssl_check_error(h, sp, res))
661 h->state = CS_ST_DATAXFER;
665 #define CERTF "ztest.pem"
666 #define KEYF "ztest.pem"
668 static int tcpip_bind(COMSTACK h, void *address, int mode)
671 tcpip_state *sp = (tcpip_state *)h->cprivate;
673 struct addrinfo *ai = (struct addrinfo *) address;
675 struct sockaddr *addr = (struct sockaddr *)address;
684 if (h->type == ssl_type && !sp->session)
687 gnutls_global_init();
689 tcpip_create_cred(h);
691 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
694 GNUTLS_X509_FMT_PEM);
695 if (res != GNUTLS_E_SUCCESS)
697 h->cerrno = CSERRORSSL;
701 #elif HAVE_OPENSSL_SSL_H
702 if (h->type == ssl_type && !sp->ctx)
705 SSL_load_error_strings();
707 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_server_method());
710 h->cerrno = CSERRORSSL;
719 res = SSL_CTX_use_certificate_file(sp->ctx, sp->cert_fname,
723 ERR_print_errors_fp(stderr);
726 res = SSL_CTX_use_PrivateKey_file(sp->ctx, sp->cert_fname,
730 ERR_print_errors_fp(stderr);
733 res = SSL_CTX_check_private_key(sp->ctx);
736 ERR_print_errors_fp(stderr);
740 TRC(fprintf(stderr, "ssl_bind\n"));
744 TRC(fprintf(stderr, "tcpip_bind\n"));
747 TRC(fprintf(stderr, "tcpip_bind\n"));
750 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
751 &one, sizeof(one)) < 0)
758 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
759 freeaddrinfo(sp->ai);
762 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
769 /* Allow a maximum-sized backlog of waiting-to-connect clients */
770 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
775 h->state = CS_ST_IDLE;
776 h->event = CS_LISTEN;
780 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
781 int (*check_ip)(void *cd, const char *a, int len, int t),
785 /* we don't get peer address on Windows (via accept) */
787 struct sockaddr_in addr;
788 YAZ_SOCKLEN_T len = sizeof(addr);
791 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
792 if (h->state != CS_ST_IDLE)
794 h->cerrno = CSOUTSTATE;
798 h->newfd = accept(h->iofile, 0, 0);
800 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
806 WSAGetLastError() == WSAEWOULDBLOCK
808 yaz_errno() == EWOULDBLOCK
810 #if EAGAIN != EWOULDBLOCK
811 || yaz_errno() == EAGAIN
816 h->cerrno = CSNODATA;
820 shutdown(h->iofile, SD_RECEIVE);
822 shutdown(h->iofile, SHUT_RD);
824 listen(h->iofile, SOMAXCONN);
833 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
834 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
837 if (check_ip && (*check_ip)(cd, (const char *) &addr,
838 sizeof(addr), AF_INET))
842 closesocket(h->newfd);
850 h->state = CS_ST_INCON;
854 COMSTACK tcpip_accept(COMSTACK h)
858 unsigned long tru = 1;
861 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
862 if (h->state == CS_ST_INCON)
864 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
865 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
869 closesocket(h->newfd);
876 memcpy(cnew, h, sizeof(*h));
877 cnew->iofile = h->newfd;
878 cnew->io_pending = 0;
880 if (!(state = (tcpip_state *)
881 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
887 closesocket(h->newfd);
895 if (!tcpip_set_blocking(cnew, cnew->flags))
901 closesocket(h->newfd);
913 state->altsize = state->altlen = 0;
914 state->towrite = state->written = -1;
915 state->complete = st->complete;
919 cnew->state = CS_ST_ACCEPT;
920 h->state = CS_ST_IDLE;
923 state->cred_ptr = st->cred_ptr;
929 (state->cred_ptr->ref)++;
930 gnutls_init(&state->session, GNUTLS_SERVER);
937 res = gnutls_set_default_priority(state->session);
938 if (res != GNUTLS_E_SUCCESS)
944 res = gnutls_credentials_set(state->session,
945 GNUTLS_CRD_CERTIFICATE,
946 st->cred_ptr->xcred);
947 if (res != GNUTLS_E_SUCCESS)
953 /* cast to intermediate size_t to avoid GCC warning. */
954 gnutls_transport_set_ptr(state->session,
955 (gnutls_transport_ptr_t)
956 (size_t) cnew->iofile);
958 #elif HAVE_OPENSSL_SSL_H
959 state->ctx = st->ctx;
960 state->ctx_alloc = 0;
961 state->ssl = st->ssl;
964 state->ssl = SSL_new(state->ctx);
965 SSL_set_fd(state->ssl, cnew->iofile);
968 state->connect_request_buf = 0;
969 state->connect_response_buf = 0;
972 if (h->state == CS_ST_ACCEPT)
975 tcpip_state *state = (tcpip_state *)h->cprivate;
978 int res = gnutls_handshake(state->session);
981 if (ssl_check_error(h, state, res))
983 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
986 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
990 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
992 #elif HAVE_OPENSSL_SSL_H
993 tcpip_state *state = (tcpip_state *)h->cprivate;
998 res = SSL_accept(state->ssl);
999 TRC(fprintf(stderr, "SSL_accept res=%d\n", res));
1002 if (ssl_check_error(h, state, res))
1009 TRC(fprintf(stderr, "SSL_accept complete\n"));
1015 h->cerrno = CSOUTSTATE;
1019 h->state = CS_ST_DATAXFER;
1024 #define CS_TCPIP_BUFCHUNK 4096
1027 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1028 * 0=connection closed.
1030 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1032 tcpip_state *sp = (tcpip_state *)h->cprivate;
1034 int tmpi, berlen, rest, req, tomove;
1035 int hasread = 0, res;
1037 TRC(fprintf(stderr, "tcpip_get: h=%p bufsize=%d\n", h, *bufsize));
1038 if (sp->altlen) /* switch buffers */
1040 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1045 *bufsize = sp->altsize;
1046 hasread = sp->altlen;
1052 while (!(berlen = (*sp->complete)(*buf, hasread)))
1056 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1058 h->cerrno = CSYSERR;
1062 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1063 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1065 h->cerrno = CSYSERR;
1070 /* unfortunatly, sun sometimes forgets to set errno in recv
1071 when EWOULDBLOCK etc. would be required (res = -1) */
1073 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1074 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1077 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1078 strerror(yaz_errno())));
1080 if (WSAGetLastError() == WSAEWOULDBLOCK)
1082 h->io_pending = CS_WANT_READ;
1087 h->cerrno = CSYSERR;
1091 if (yaz_errno() == EWOULDBLOCK
1093 #if EAGAIN != EWOULDBLOCK
1094 || yaz_errno() == EAGAIN
1097 || yaz_errno() == EINPROGRESS
1099 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1103 h->io_pending = CS_WANT_READ;
1106 else if (yaz_errno() == 0)
1110 h->cerrno = CSYSERR;
1118 if (hasread > h->max_recv_bytes)
1120 h->cerrno = CSBUFSIZE;
1124 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1126 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1127 if (hasread > berlen)
1129 tomove = req = hasread - berlen;
1130 rest = tomove % CS_TCPIP_BUFCHUNK;
1132 req += CS_TCPIP_BUFCHUNK - rest;
1135 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1137 h->cerrno = CSYSERR;
1140 } else if (sp->altsize < req)
1141 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1143 h->cerrno = CSYSERR;
1146 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1148 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1150 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1151 *(*buf + berlen) = '\0';
1152 return berlen ? berlen : 1;
1158 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1159 * 0=connection closed.
1161 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1163 tcpip_state *sp = (tcpip_state *)h->cprivate;
1165 int tmpi, berlen, rest, req, tomove;
1166 int hasread = 0, res;
1168 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1169 if (sp->altlen) /* switch buffers */
1171 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1176 *bufsize = sp->altsize;
1177 hasread = sp->altlen;
1183 while (!(berlen = (*sp->complete)(*buf, hasread)))
1187 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1190 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1191 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1194 res = gnutls_record_recv(sp->session, *buf + hasread,
1198 TRC(fprintf(stderr, "gnutls_record_recv returned 0\n"));
1203 if (ssl_check_error(h, sp, res))
1208 res = SSL_read(sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1209 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1212 if (ssl_check_error(h, sp, res))
1219 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1221 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1222 if (hasread > berlen)
1224 tomove = req = hasread - berlen;
1225 rest = tomove % CS_TCPIP_BUFCHUNK;
1227 req += CS_TCPIP_BUFCHUNK - rest;
1230 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1232 } else if (sp->altsize < req)
1233 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1235 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1237 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1239 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1240 *(*buf + berlen) = '\0';
1241 return berlen ? berlen : 1;
1246 * Returns 1, 0 or -1
1247 * In nonblocking mode, you must call again with same buffer while
1248 * return value is 1.
1250 int tcpip_put(COMSTACK h, char *buf, int size)
1253 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1255 TRC(fprintf(stderr, "tcpip_put: h=%p size=%d\n", h, size));
1258 if (state->towrite < 0)
1260 state->towrite = size;
1263 else if (state->towrite != size)
1265 h->cerrno = CSWRONGBUF;
1268 while (state->towrite > state->written)
1271 send(h->iofile, buf + state->written, size -
1282 WSAGetLastError() == WSAEWOULDBLOCK
1284 yaz_errno() == EWOULDBLOCK
1286 #if EAGAIN != EWOULDBLOCK
1287 || yaz_errno() == EAGAIN
1291 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1293 || yaz_errno() == EINPROGRESS
1297 TRC(fprintf(stderr, " Flow control stop\n"));
1298 h->io_pending = CS_WANT_WRITE;
1301 h->cerrno = CSYSERR;
1304 state->written += res;
1305 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1306 res, state->written, size));
1308 state->towrite = state->written = -1;
1309 TRC(fprintf(stderr, " Ok\n"));
1316 * Returns 1, 0 or -1
1317 * In nonblocking mode, you must call again with same buffer while
1318 * return value is 1.
1320 int ssl_put(COMSTACK h, char *buf, int size)
1323 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1325 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1328 if (state->towrite < 0)
1330 state->towrite = size;
1333 else if (state->towrite != size)
1335 h->cerrno = CSWRONGBUF;
1338 while (state->towrite > state->written)
1341 res = gnutls_record_send(state->session, buf + state->written,
1342 size - state->written);
1345 if (ssl_check_error(h, state, res))
1350 res = SSL_write(state->ssl, buf + state->written,
1351 size - state->written);
1354 if (ssl_check_error(h, state, res))
1359 state->written += res;
1360 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1361 res, state->written, size));
1363 state->towrite = state->written = -1;
1364 TRC(fprintf(stderr, " Ok\n"));
1369 void tcpip_close(COMSTACK h)
1371 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1373 TRC(fprintf(stderr, "tcpip_close: h=%p pid=%d\n", h, getpid()));
1374 if (h->iofile != -1)
1378 gnutls_bye(sp->session, GNUTLS_SHUT_WR);
1379 #elif HAVE_OPENSSL_SSL_H
1382 SSL_shutdown(sp->ssl);
1386 closesocket(h->iofile);
1396 gnutls_deinit(sp->session);
1400 assert(sp->cred_ptr->ref > 0);
1402 if (--(sp->cred_ptr->ref) == 0)
1404 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1405 sp->cred_ptr->xcred, getpid()));
1406 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1407 xfree(sp->cred_ptr);
1411 #elif HAVE_OPENSSL_SSL_H
1414 TRC(fprintf(stderr, "SSL_free\n"));
1419 SSL_CTX_free(sp->ctx_alloc);
1421 #if HAVE_GETADDRINFO
1423 freeaddrinfo(sp->ai);
1425 xfree(sp->connect_request_buf);
1426 xfree(sp->connect_response_buf);
1431 const char *tcpip_addrstr(COMSTACK h)
1433 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1434 char *r = 0, *buf = sp->buf;
1436 #if HAVE_GETADDRINFO
1438 struct sockaddr_storage addr;
1439 YAZ_SOCKLEN_T len = sizeof(addr);
1441 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1443 h->cerrno = CSYSERR;
1446 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1448 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1457 struct sockaddr_in addr;
1458 YAZ_SOCKLEN_T len = sizeof(addr);
1459 struct hostent *host;
1461 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1463 h->cerrno = CSYSERR;
1466 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1468 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1469 sizeof(addr.sin_addr),
1471 r = (char*) host->h_name;
1474 r = inet_ntoa(addr.sin_addr);
1477 if (h->protocol == PROTO_HTTP)
1478 sprintf(buf, "http:%s", r);
1480 sprintf(buf, "tcp:%s", r);
1484 if (h->protocol == PROTO_HTTP)
1485 sprintf(buf, "https:%s", r);
1487 sprintf(buf, "ssl:%s", r);
1489 #elif HAVE_OPENSSL_SSL_H
1492 if (h->protocol == PROTO_HTTP)
1493 sprintf(buf, "https:%s", r);
1495 sprintf(buf, "ssl:%s", r);
1501 static int tcpip_set_blocking(COMSTACK p, int flags)
1506 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1507 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1510 flag = fcntl(p->iofile, F_GETFL, 0);
1511 if (flags & CS_FLAGS_BLOCKING)
1512 flag = flag & ~O_NONBLOCK; /* blocking */
1515 flag = flag | O_NONBLOCK; /* non-blocking */
1516 signal(SIGPIPE, SIG_IGN);
1518 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1527 /* gnutls_x509_crt_print appeared in 1.7.6. Memory leaks were fixed in 1.7.9.
1528 GNUTLS_CRT_PRINT_FULL appeared in 2.4.0. */
1529 #if GNUTLS_VERSION_NUMBER >= 0x020400
1530 #define USE_GNUTLS_X509_CRT_PRINT 1
1532 #define USE_GNUTLS_X509_CRT_PRINT 0
1536 #if USE_GNUTLS_X509_CRT_PRINT
1538 static const char *bin2hex(const void *bin, size_t bin_size)
1540 static char printable[110];
1541 const unsigned char *_bin = bin;
1547 for (i = 0; i < bin_size; i++)
1549 sprintf(print, "%.2x ", _bin[i]);
1555 static void x509_crt_print(gnutls_x509_crt_t cert)
1557 time_t expiration_time, activation_time;
1561 unsigned int algo, bits;
1563 expiration_time = gnutls_x509_crt_get_expiration_time(cert);
1564 activation_time = gnutls_x509_crt_get_activation_time(cert);
1566 printf("\tCertificate is valid since: %s", ctime(&activation_time));
1567 printf("\tCertificate expires: %s", ctime(&expiration_time));
1569 /* Print the serial number of the certificate. */
1570 size = sizeof(serial);
1571 gnutls_x509_crt_get_serial(cert, serial, &size);
1573 printf("\tCertificate serial number: %s\n", bin2hex(serial, size));
1575 /* Extract some of the public key algorithm's parameters
1577 algo = gnutls_x509_crt_get_pk_algorithm(cert, &bits);
1579 printf("Certificate public key: %s", gnutls_pk_algorithm_get_name(algo));
1581 /* Print the version of the X.509 certificate. */
1582 printf("\tCertificate version: #%d\n", gnutls_x509_crt_get_version(cert));
1585 gnutls_x509_crt_get_dn(cert, dn, &size);
1586 printf("\tDN: %s\n", dn);
1589 gnutls_x509_crt_get_issuer_dn(cert, dn, &size);
1590 printf("\tIssuer's DN: %s\n", dn);
1595 void cs_print_session_info(COMSTACK cs)
1598 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1599 if (cs->type == ssl_type && sp->session)
1601 const gnutls_datum_t *cert_list;
1602 unsigned i, cert_list_size;
1603 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1605 printf("X509 certificate\n");
1606 cert_list = gnutls_certificate_get_peers(sp->session,
1608 printf("Peer provided %u certificates\n", cert_list_size);
1609 for (i = 0; i < cert_list_size; i++)
1611 gnutls_x509_crt_t cert;
1612 #if USE_GNUTLS_X509_CRT_PRINT
1614 gnutls_datum_t cinfo;
1616 gnutls_x509_crt_init(&cert);
1617 gnutls_x509_crt_import(cert, &cert_list[i], GNUTLS_X509_FMT_DER);
1618 printf("Certificate info %d:\n", i + 1);
1619 #if USE_GNUTLS_X509_CRT_PRINT
1620 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL,
1624 printf("\t%s\n", cinfo.data);
1625 gnutls_free(cinfo.data);
1628 x509_crt_print(cert);
1630 gnutls_x509_crt_deinit(cert);
1634 #elif HAVE_OPENSSL_SSL_H
1635 if (cs->type == ssl_type)
1637 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1638 SSL *ssl = (SSL *) sp->ssl;
1641 X509 *server_cert = SSL_get_peer_certificate(ssl);
1646 BIO *bio = BIO_new(BIO_s_mem());
1648 /* get PEM buffer in memory */
1649 PEM_write_bio_X509(bio, server_cert);
1650 pem_len = BIO_get_mem_data(bio, &pem_buf);
1651 fwrite(pem_buf, pem_len, 1, stdout);
1653 /* print all info on screen .. */
1654 X509_print_fp(stdout, server_cert);
1657 X509_free(server_cert);
1664 void *cs_get_ssl(COMSTACK cs)
1666 #if HAVE_OPENSSL_SSL_H
1667 if (cs && cs->type == ssl_type)
1669 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1676 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1679 if (cs && cs->type == ssl_type)
1681 #if HAVE_OPENSSL_SSL_H
1682 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1685 sp->ctx = (SSL_CTX *) ctx;
1693 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1696 if (cs && cs->type == ssl_type)
1698 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1699 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1700 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1707 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1709 #if HAVE_OPENSSL_SSL_H
1710 SSL *ssl = (SSL *) cs_get_ssl(cs);
1713 X509 *server_cert = SSL_get_peer_certificate(ssl);
1716 BIO *bio = BIO_new(BIO_s_mem());
1718 /* get PEM buffer in memory */
1719 PEM_write_bio_X509(bio, server_cert);
1720 *len = BIO_get_mem_data(bio, &pem_buf);
1721 *buf = (char *) xmalloc(*len);
1722 memcpy(*buf, pem_buf, *len);
1731 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1733 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1735 int r = tcpip_put(h, state->connect_request_buf,
1736 state->connect_request_len);
1740 h->f_put = tcpip_put; /* switch to normal tcpip put */
1741 r = tcpip_put(h, buf, size);
1746 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1748 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1751 r = tcpip_get(h, &state->connect_response_buf,
1752 &state->connect_response_len);
1755 /* got the connect response completely */
1756 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1757 h->f_get = tcpip_get;
1758 return tcpip_get(h, buf, bufsize);
1765 * c-file-style: "Stroustrup"
1766 * indent-tabs-mode: nil
1768 * vim: shiftwidth=4 tabstop=8 expandtab