1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2009 Index Data
3 * See the file LICENSE for details.
7 * \brief Implements TCP/IP + SSL COMSTACK.
18 #include <sys/types.h>
28 /* VS 2003 or later has getaddrinfo; older versions do not */
32 #define HAVE_GETADDRINFO 1
34 #define HAVE_GETADDRINFO 0
39 #include <netinet/in.h>
45 #include <arpa/inet.h>
47 #if HAVE_NETINET_TCP_H
48 #include <netinet/tcp.h>
51 #include <sys/socket.h>
58 #include <gnutls/x509.h>
59 #include <gnutls/gnutls.h>
63 #if HAVE_OPENSSL_SSL_H
64 #include <openssl/ssl.h>
65 #include <openssl/err.h>
69 #include <yaz/comstack.h>
70 #include <yaz/tcpip.h>
71 #include <yaz/errno.h>
73 static void tcpip_close(COMSTACK h);
74 static int tcpip_put(COMSTACK h, char *buf, int size);
75 static int tcpip_get(COMSTACK h, char **buf, int *bufsize);
76 static int tcpip_put_connect(COMSTACK h, char *buf, int size);
77 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize);
78 static int tcpip_connect(COMSTACK h, void *address);
79 static int tcpip_more(COMSTACK h);
80 static int tcpip_rcvconnect(COMSTACK h);
81 static int tcpip_bind(COMSTACK h, void *address, int mode);
82 static int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
83 int (*check_ip)(void *cd, const char *a, int len, int type),
85 static int tcpip_set_blocking(COMSTACK p, int blocking);
88 static int ssl_get(COMSTACK h, char **buf, int *bufsize);
89 static int ssl_put(COMSTACK h, char *buf, int size);
92 static COMSTACK tcpip_accept(COMSTACK h);
93 static const char *tcpip_addrstr(COMSTACK h);
94 static void *tcpip_straddr(COMSTACK h, const char *str);
102 #ifndef YAZ_SOCKLEN_T
103 #define YAZ_SOCKLEN_T int
107 struct tcpip_cred_ptr {
108 gnutls_certificate_credentials_t xcred;
113 /* this state is used for both SSL and straight TCP/IP */
114 typedef struct tcpip_state
116 char *altbuf; /* alternate buffer for surplus data */
117 int altsize; /* size as xmalloced */
118 int altlen; /* length of data or 0 if none */
120 int written; /* -1 if we aren't writing */
121 int towrite; /* to verify against user input */
122 int (*complete)(const char *buf, int len); /* length/complete. */
126 struct sockaddr_in addr; /* returned by cs_straddr */
128 char buf[128]; /* returned by cs_addrstr */
130 struct tcpip_cred_ptr *cred_ptr;
131 gnutls_session_t session;
132 char cert_fname[256];
133 #elif HAVE_OPENSSL_SSL_H
134 SSL_CTX *ctx; /* current CTX. */
135 SSL_CTX *ctx_alloc; /* If =ctx it is owned by CS. If 0 it is not owned */
137 char cert_fname[256];
139 char *connect_request_buf;
140 int connect_request_len;
141 char *connect_response_buf;
142 int connect_response_len;
146 static int tcpip_init(void)
148 static int initialized = 0;
154 requested = MAKEWORD(1, 1);
155 if (WSAStartup(requested, &wd))
162 static int tcpip_init(void)
169 * This function is always called through the cs_create() macro.
170 * s >= 0: socket has already been established for us.
172 COMSTACK tcpip_type(int s, int flags, int protocol, void *vp)
179 if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
181 if (!(sp = (struct tcpip_state *)(p->cprivate =
182 xmalloc(sizeof(tcpip_state)))))
189 p->type = tcpip_type;
190 p->protocol = (enum oid_proto) protocol;
192 p->f_connect = tcpip_connect;
193 p->f_rcvconnect = tcpip_rcvconnect;
194 p->f_get = tcpip_get;
195 p->f_put = tcpip_put;
196 p->f_close = tcpip_close;
197 p->f_more = tcpip_more;
198 p->f_bind = tcpip_bind;
199 p->f_listen = tcpip_listen;
200 p->f_accept = tcpip_accept;
201 p->f_addrstr = tcpip_addrstr;
202 p->f_straddr = tcpip_straddr;
203 p->f_set_blocking = tcpip_set_blocking;
204 p->max_recv_bytes = 5000000;
206 p->state = s < 0 ? CS_ST_UNBND : CS_ST_IDLE; /* state of line */
214 strcpy(sp->cert_fname, "yaz.pem");
215 #elif HAVE_OPENSSL_SSL_H
216 sp->ctx = sp->ctx_alloc = 0;
218 strcpy(sp->cert_fname, "yaz.pem");
225 sp->altsize = sp->altlen = 0;
226 sp->towrite = sp->written = -1;
227 if (protocol == PROTO_WAIS)
228 sp->complete = completeWAIS;
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\n"));
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)
340 struct addrinfo hints, *res;
345 hints.ai_family = AF_UNSPEC;
346 hints.ai_socktype = SOCK_STREAM;
347 hints.ai_protocol = 0;
348 hints.ai_addrlen = 0;
349 hints.ai_addr = NULL;
350 hints.ai_canonname = NULL;
351 hints.ai_next = NULL;
353 strncpy(host, str, sizeof(host)-1);
354 host[sizeof(host)-1] = 0;
355 if ((p = strchr(host, '/')))
357 if ((p = strrchr(host, ':')))
363 if (!strcmp("@", host))
365 hints.ai_flags = AI_PASSIVE;
366 error = getaddrinfo(0, port, &hints, &res);
370 error = getaddrinfo(host, port, &hints, &res);
378 /* gethostbyname .. old systems */
379 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
384 short int port = default_port;
386 unsigned long tmpadd;
390 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
391 add->sin_family = AF_INET;
392 strncpy(buf, str, sizeof(buf)-1);
393 buf[sizeof(buf)-1] = 0;
394 if ((p = strchr(buf, '/')))
396 if ((p = strrchr(buf, ':')))
401 add->sin_port = htons(port);
402 if (!strcmp("@", buf))
404 add->sin_addr.s_addr = INADDR_ANY;
406 else if ((tmpadd = inet_addr(buf)) != -1)
408 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
410 else if ((hp = gethostbyname(buf)))
412 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
413 sizeof(struct in_addr));
421 void *tcpip_straddr(COMSTACK h, const char *str)
423 tcpip_state *sp = (tcpip_state *)h->cprivate;
424 const char *port = "210";
425 struct addrinfo *ai = 0;
426 if (h->protocol == PROTO_HTTP)
432 freeaddrinfo(sp->ai);
433 sp->ai = tcpip_getaddrinfo(str, port);
434 if (sp->ai && h->state == CS_ST_UNBND)
437 /* try to make IPV6 socket first */
438 for (ai = sp->ai; ai; ai = ai->ai_next)
440 if (ai->ai_family == AF_INET6)
442 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
449 /* no IPV6 could be made.. Try them all */
450 for (ai = sp->ai; ai; ai = ai->ai_next)
452 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
462 if (!tcpip_set_blocking(h, h->flags))
468 void *tcpip_straddr(COMSTACK h, const char *str)
470 tcpip_state *sp = (tcpip_state *)h->cprivate;
472 if (h->protocol == PROTO_HTTP)
477 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
479 if (h->state == CS_ST_UNBND)
482 s = socket(AF_INET, SOCK_STREAM, 0);
487 if (!tcpip_set_blocking(h, h->flags))
494 int tcpip_more(COMSTACK h)
496 tcpip_state *sp = (tcpip_state *)h->cprivate;
498 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
502 * connect(2) will block (sometimes) - nothing we can do short of doing
503 * weird things like spawning subprocesses or threading or some weird junk
506 int tcpip_connect(COMSTACK h, void *address)
509 struct addrinfo *ai = (struct addrinfo *) address;
510 tcpip_state *sp = (tcpip_state *)h->cprivate;
512 struct sockaddr_in *add = (struct sockaddr_in *) address;
515 TRC(fprintf(stderr, "tcpip_connect\n"));
517 if (h->state != CS_ST_UNBND)
519 h->cerrno = CSOUTSTATE;
523 r = connect(h->iofile, ai->ai_addr, ai->ai_addrlen);
524 freeaddrinfo(sp->ai);
527 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
532 if (WSAGetLastError() == WSAEWOULDBLOCK)
534 h->event = CS_CONNECT;
535 h->state = CS_ST_CONNECTING;
536 h->io_pending = CS_WANT_WRITE;
540 if (yaz_errno() == EINPROGRESS)
542 h->event = CS_CONNECT;
543 h->state = CS_ST_CONNECTING;
544 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
551 h->event = CS_CONNECT;
552 h->state = CS_ST_CONNECTING;
554 return tcpip_rcvconnect(h);
560 int tcpip_rcvconnect(COMSTACK h)
563 tcpip_state *sp = (tcpip_state *)h->cprivate;
565 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
567 if (h->state == CS_ST_DATAXFER)
569 if (h->state != CS_ST_CONNECTING)
571 h->cerrno = CSOUTSTATE;
575 if (h->type == ssl_type && !sp->session)
578 gnutls_global_init();
580 tcpip_create_cred(h);
582 gnutls_init(&sp->session, GNUTLS_CLIENT);
583 gnutls_set_default_priority(sp->session);
584 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
585 sp->cred_ptr->xcred);
587 /* cast to intermediate size_t to avoid GCC warning. */
588 gnutls_transport_set_ptr(sp->session,
589 (gnutls_transport_ptr_t)
591 res = gnutls_handshake(sp->session);
594 if (ssl_check_error(h, sp, res))
599 #elif HAVE_OPENSSL_SSL_H
600 if (h->type == ssl_type && !sp->ctx)
603 SSL_load_error_strings();
605 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_client_method());
608 h->cerrno = CSERRORSSL;
618 sp->ssl = SSL_new(sp->ctx);
619 SSL_set_fd(sp->ssl, h->iofile);
621 res = SSL_connect(sp->ssl);
624 if (ssl_check_error(h, sp, res))
631 h->state = CS_ST_DATAXFER;
635 #define CERTF "ztest.pem"
636 #define KEYF "ztest.pem"
638 static int tcpip_bind(COMSTACK h, void *address, int mode)
641 tcpip_state *sp = (tcpip_state *)h->cprivate;
643 struct addrinfo *ai = (struct addrinfo *) address;
645 struct sockaddr *addr = (struct sockaddr *)address;
654 if (h->type == ssl_type && !sp->session)
657 gnutls_global_init();
659 tcpip_create_cred(h);
661 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
664 GNUTLS_X509_FMT_PEM);
665 if (res != GNUTLS_E_SUCCESS)
667 h->cerrno = CSERRORSSL;
671 #elif HAVE_OPENSSL_SSL_H
672 if (h->type == ssl_type && !sp->ctx)
675 SSL_load_error_strings();
677 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_server_method());
680 h->cerrno = CSERRORSSL;
689 res = SSL_CTX_use_certificate_file(sp->ctx, sp->cert_fname,
693 ERR_print_errors_fp(stderr);
696 res = SSL_CTX_use_PrivateKey_file(sp->ctx, sp->cert_fname,
700 ERR_print_errors_fp(stderr);
703 res = SSL_CTX_check_private_key(sp->ctx);
706 ERR_print_errors_fp(stderr);
710 TRC(fprintf(stderr, "ssl_bind\n"));
714 TRC(fprintf(stderr, "tcpip_bind\n"));
717 TRC(fprintf(stderr, "tcpip_bind\n"));
720 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
721 &one, sizeof(one)) < 0)
728 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
729 freeaddrinfo(sp->ai);
732 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
739 /* Allow a maximum-sized backlog of waiting-to-connect clients */
740 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
745 h->state = CS_ST_IDLE;
746 h->event = CS_LISTEN;
750 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
751 int (*check_ip)(void *cd, const char *a, int len, int t),
754 struct sockaddr_in addr;
755 YAZ_SOCKLEN_T len = sizeof(addr);
757 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
758 if (h->state != CS_ST_IDLE)
760 h->cerrno = CSOUTSTATE;
764 h->newfd = accept(h->iofile, 0, 0);
766 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
772 WSAGetLastError() == WSAEWOULDBLOCK
774 yaz_errno() == EWOULDBLOCK
776 #if EAGAIN != EWOULDBLOCK
777 || yaz_errno() == EAGAIN
782 h->cerrno = CSNODATA;
786 shutdown(h->iofile, SD_RECEIVE);
788 shutdown(h->iofile, SHUT_RD);
790 listen(h->iofile, SOMAXCONN);
795 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
796 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
799 if (check_ip && (*check_ip)(cd, (const char *) &addr,
800 sizeof(addr), AF_INET))
804 closesocket(h->newfd);
811 h->state = CS_ST_INCON;
815 COMSTACK tcpip_accept(COMSTACK h)
819 unsigned long tru = 1;
822 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
823 if (h->state == CS_ST_INCON)
825 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
826 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
830 closesocket(h->newfd);
837 memcpy(cnew, h, sizeof(*h));
838 cnew->iofile = h->newfd;
839 cnew->io_pending = 0;
841 if (!(state = (tcpip_state *)
842 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
848 closesocket(h->newfd);
856 if (!tcpip_set_blocking(cnew, cnew->flags))
862 closesocket(h->newfd);
874 state->altsize = state->altlen = 0;
875 state->towrite = state->written = -1;
876 state->complete = st->complete;
880 cnew->state = CS_ST_ACCEPT;
881 h->state = CS_ST_IDLE;
884 state->cred_ptr = st->cred_ptr;
890 (state->cred_ptr->ref)++;
891 gnutls_init(&state->session, GNUTLS_SERVER);
898 res = gnutls_set_default_priority(state->session);
899 if (res != GNUTLS_E_SUCCESS)
905 res = gnutls_credentials_set(state->session,
906 GNUTLS_CRD_CERTIFICATE,
907 st->cred_ptr->xcred);
908 if (res != GNUTLS_E_SUCCESS)
914 /* cast to intermediate size_t to avoid GCC warning. */
915 gnutls_transport_set_ptr(state->session,
916 (gnutls_transport_ptr_t)
917 (size_t) cnew->iofile);
919 #elif HAVE_OPENSSL_SSL_H
920 state->ctx = st->ctx;
921 state->ctx_alloc = 0;
922 state->ssl = st->ssl;
925 state->ssl = SSL_new(state->ctx);
926 SSL_set_fd(state->ssl, cnew->iofile);
929 state->connect_request_buf = 0;
930 state->connect_response_buf = 0;
933 if (h->state == CS_ST_ACCEPT)
936 tcpip_state *state = (tcpip_state *)h->cprivate;
939 int res = gnutls_handshake(state->session);
942 if (ssl_check_error(h, state, res))
944 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
947 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
951 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
953 #elif HAVE_OPENSSL_SSL_H
954 tcpip_state *state = (tcpip_state *)h->cprivate;
959 res = SSL_accept(state->ssl);
960 TRC(fprintf(stderr, "SSL_accept res=%d\n", res));
963 if (ssl_check_error(h, state, res))
970 TRC(fprintf(stderr, "SSL_accept complete\n"));
976 h->cerrno = CSOUTSTATE;
980 h->state = CS_ST_DATAXFER;
985 #define CS_TCPIP_BUFCHUNK 4096
988 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
989 * 0=connection closed.
991 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
993 tcpip_state *sp = (tcpip_state *)h->cprivate;
995 int tmpi, berlen, rest, req, tomove;
996 int hasread = 0, res;
998 TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
999 if (sp->altlen) /* switch buffers */
1001 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1006 *bufsize = sp->altsize;
1007 hasread = sp->altlen;
1013 while (!(berlen = (*sp->complete)(*buf, hasread)))
1017 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1019 h->cerrno = CSYSERR;
1023 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1024 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1026 h->cerrno = CSYSERR;
1031 /* unfortunatly, sun sometimes forgets to set errno in recv
1032 when EWOULDBLOCK etc. would be required (res = -1) */
1034 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1035 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1038 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1039 strerror(yaz_errno())));
1041 if (WSAGetLastError() == WSAEWOULDBLOCK)
1043 h->io_pending = CS_WANT_READ;
1048 h->cerrno = CSYSERR;
1052 if (yaz_errno() == EWOULDBLOCK
1054 #if EAGAIN != EWOULDBLOCK
1055 || yaz_errno() == EAGAIN
1058 || yaz_errno() == EINPROGRESS
1060 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1064 h->io_pending = CS_WANT_READ;
1067 else if (yaz_errno() == 0)
1071 h->cerrno = CSYSERR;
1079 if (hasread > h->max_recv_bytes)
1081 h->cerrno = CSBUFSIZE;
1085 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1087 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1088 if (hasread > berlen)
1090 tomove = req = hasread - berlen;
1091 rest = tomove % CS_TCPIP_BUFCHUNK;
1093 req += CS_TCPIP_BUFCHUNK - rest;
1096 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1098 h->cerrno = CSYSERR;
1101 } else if (sp->altsize < req)
1102 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1104 h->cerrno = CSYSERR;
1107 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1109 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1111 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1112 *(*buf + berlen) = '\0';
1113 return berlen ? berlen : 1;
1119 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1120 * 0=connection closed.
1122 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1124 tcpip_state *sp = (tcpip_state *)h->cprivate;
1126 int tmpi, berlen, rest, req, tomove;
1127 int hasread = 0, res;
1129 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1130 if (sp->altlen) /* switch buffers */
1132 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1137 *bufsize = sp->altsize;
1138 hasread = sp->altlen;
1144 while (!(berlen = (*sp->complete)(*buf, hasread)))
1148 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1151 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1152 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1155 res = gnutls_record_recv(sp->session, *buf + hasread,
1159 if (ssl_check_error(h, sp, res))
1164 res = SSL_read(sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1165 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1168 if (ssl_check_error(h, sp, res))
1175 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1177 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1178 if (hasread > berlen)
1180 tomove = req = hasread - berlen;
1181 rest = tomove % CS_TCPIP_BUFCHUNK;
1183 req += CS_TCPIP_BUFCHUNK - rest;
1186 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1188 } else if (sp->altsize < req)
1189 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1191 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1193 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1195 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1196 *(*buf + berlen) = '\0';
1197 return berlen ? berlen : 1;
1202 * Returns 1, 0 or -1
1203 * In nonblocking mode, you must call again with same buffer while
1204 * return value is 1.
1206 int tcpip_put(COMSTACK h, char *buf, int size)
1209 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1211 TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
1214 if (state->towrite < 0)
1216 state->towrite = size;
1219 else if (state->towrite != size)
1221 h->cerrno = CSWRONGBUF;
1224 while (state->towrite > state->written)
1227 send(h->iofile, buf + state->written, size -
1238 WSAGetLastError() == WSAEWOULDBLOCK
1240 yaz_errno() == EWOULDBLOCK
1242 #if EAGAIN != EWOULDBLOCK
1243 || yaz_errno() == EAGAIN
1247 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1249 || yaz_errno() == EINPROGRESS
1253 TRC(fprintf(stderr, " Flow control stop\n"));
1254 h->io_pending = CS_WANT_WRITE;
1257 h->cerrno = CSYSERR;
1260 state->written += res;
1261 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1262 res, state->written, size));
1264 state->towrite = state->written = -1;
1265 TRC(fprintf(stderr, " Ok\n"));
1272 * Returns 1, 0 or -1
1273 * In nonblocking mode, you must call again with same buffer while
1274 * return value is 1.
1276 int ssl_put(COMSTACK h, char *buf, int size)
1279 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1281 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1284 if (state->towrite < 0)
1286 state->towrite = size;
1289 else if (state->towrite != size)
1291 h->cerrno = CSWRONGBUF;
1294 while (state->towrite > state->written)
1297 res = gnutls_record_send(state->session, buf + state->written,
1298 size - state->written);
1301 if (ssl_check_error(h, state, res))
1306 res = SSL_write(state->ssl, buf + state->written,
1307 size - state->written);
1310 if (ssl_check_error(h, state, res))
1315 state->written += res;
1316 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1317 res, state->written, size));
1319 state->towrite = state->written = -1;
1320 TRC(fprintf(stderr, " Ok\n"));
1325 void tcpip_close(COMSTACK h)
1327 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1329 TRC(fprintf(stderr, "tcpip_close h=%p pid=%d\n", h, getpid()));
1330 if (h->iofile != -1)
1334 gnutls_bye(sp->session, GNUTLS_SHUT_RDWR);
1335 #elif HAVE_OPENSSL_SSL_H
1338 SSL_shutdown(sp->ssl);
1342 closesocket(h->iofile);
1352 gnutls_deinit(sp->session);
1356 assert(sp->cred_ptr->ref > 0);
1358 if (--(sp->cred_ptr->ref) == 0)
1360 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1361 sp->cred_ptr->xcred, getpid()));
1362 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1363 xfree(sp->cred_ptr);
1367 #elif HAVE_OPENSSL_SSL_H
1370 TRC(fprintf(stderr, "SSL_free\n"));
1375 SSL_CTX_free(sp->ctx_alloc);
1377 #if HAVE_GETADDRINFO
1379 freeaddrinfo(sp->ai);
1381 xfree(sp->connect_request_buf);
1382 xfree(sp->connect_response_buf);
1387 const char *tcpip_addrstr(COMSTACK h)
1389 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1390 char *r = 0, *buf = sp->buf;
1392 #if HAVE_GETADDRINFO
1394 struct sockaddr_storage addr;
1395 YAZ_SOCKLEN_T len = sizeof(addr);
1397 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1399 h->cerrno = CSYSERR;
1402 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1404 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1413 struct sockaddr_in addr;
1414 YAZ_SOCKLEN_T len = sizeof(addr);
1415 struct hostent *host;
1417 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1419 h->cerrno = CSYSERR;
1422 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1424 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1425 sizeof(addr.sin_addr),
1427 r = (char*) host->h_name;
1430 r = inet_ntoa(addr.sin_addr);
1433 if (h->protocol == PROTO_HTTP)
1434 sprintf(buf, "http:%s", r);
1436 sprintf(buf, "tcp:%s", r);
1440 if (h->protocol == PROTO_HTTP)
1441 sprintf(buf, "https:%s", r);
1443 sprintf(buf, "ssl:%s", r);
1445 #elif HAVE_OPENSSL_SSL_H
1448 if (h->protocol == PROTO_HTTP)
1449 sprintf(buf, "https:%s", r);
1451 sprintf(buf, "ssl:%s", r);
1457 static int tcpip_set_blocking(COMSTACK p, int flags)
1462 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1463 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1466 flag = fcntl(p->iofile, F_GETFL, 0);
1467 if (flags & CS_FLAGS_BLOCKING)
1468 flag = flag & ~O_NONBLOCK; /* blocking */
1471 flag = flag | O_NONBLOCK; /* non-blocking */
1472 signal(SIGPIPE, SIG_IGN);
1474 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1481 void cs_print_session_info(COMSTACK cs)
1484 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1487 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1489 printf("X509 certificate\n");
1491 #elif HAVE_OPENSSL_SSL_H
1492 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1493 SSL *ssl = (SSL *) sp->ssl;
1496 X509 *server_cert = SSL_get_peer_certificate(ssl);
1502 BIO *bio = BIO_new(BIO_s_mem());
1504 /* get PEM buffer in memory */
1505 PEM_write_bio_X509(bio, server_cert);
1506 pem_len = BIO_get_mem_data(bio, &pem_buf);
1507 fwrite(pem_buf, pem_len, 1, stdout);
1509 /* print all info on screen .. */
1510 X509_print_fp(stdout, server_cert);
1513 X509_free(server_cert);
1519 void *cs_get_ssl(COMSTACK cs)
1521 #if HAVE_OPENSSL_SSL_H
1522 struct tcpip_state *sp;
1523 if (!cs || cs->type != ssl_type)
1525 sp = (struct tcpip_state *) cs->cprivate;
1532 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1535 struct tcpip_state *sp;
1536 if (!cs || cs->type != ssl_type)
1538 sp = (struct tcpip_state *) cs->cprivate;
1539 #if HAVE_OPENSSL_SSL_H
1542 sp->ctx = (SSL_CTX *) ctx;
1550 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1553 struct tcpip_state *sp;
1554 if (!cs || cs->type != ssl_type)
1556 sp = (struct tcpip_state *) cs->cprivate;
1557 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1558 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1565 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1567 #if HAVE_OPENSSL_SSL_H
1568 SSL *ssl = (SSL *) cs_get_ssl(cs);
1571 X509 *server_cert = SSL_get_peer_certificate(ssl);
1574 BIO *bio = BIO_new(BIO_s_mem());
1576 /* get PEM buffer in memory */
1577 PEM_write_bio_X509(bio, server_cert);
1578 *len = BIO_get_mem_data(bio, &pem_buf);
1579 *buf = (char *) xmalloc(*len);
1580 memcpy(*buf, pem_buf, *len);
1589 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1591 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1593 int r = tcpip_put(h, state->connect_request_buf,
1594 state->connect_request_len);
1598 h->f_put = tcpip_put; /* switch to normal tcpip put */
1599 r = tcpip_put(h, buf, size);
1604 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1606 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1609 r = tcpip_get(h, &state->connect_response_buf,
1610 &state->connect_response_len);
1613 /* got the connect response completely */
1614 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1615 h->f_get = tcpip_get;
1616 return tcpip_get(h, buf, bufsize);
1623 * c-file-style: "Stroustrup"
1624 * indent-tabs-mode: nil
1626 * vim: shiftwidth=4 tabstop=8 expandtab