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 int 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 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 */
215 strcpy(sp->cert_fname, "yaz.pem");
216 #elif HAVE_OPENSSL_SSL_H
217 sp->ctx = sp->ctx_alloc = 0;
219 strcpy(sp->cert_fname, "yaz.pem");
226 sp->altsize = sp->altlen = 0;
227 sp->towrite = sp->written = -1;
228 if (protocol == PROTO_WAIS)
229 sp->complete = completeWAIS;
231 sp->complete = cs_complete_auto;
233 sp->connect_request_buf = 0;
234 sp->connect_request_len = 0;
235 sp->connect_response_buf = 0;
236 sp->connect_response_len = 0;
238 p->timeout = COMSTACK_DEFAULT_TIMEOUT;
239 TRC(fprintf(stderr, "Created new TCPIP comstack\n"));
244 COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
245 const char *connect_host)
247 COMSTACK p = tcpip_type(s, flags, protocol, 0);
252 tcpip_state *sp = (tcpip_state *) p->cprivate;
253 sp->connect_request_buf = (char *) xmalloc(strlen(connect_host) + 30);
254 sprintf(sp->connect_request_buf, "CONNECT %s HTTP/1.0\r\n\r\n",
256 sp->connect_request_len = strlen(sp->connect_request_buf);
257 p->f_put = tcpip_put_connect;
258 p->f_get = tcpip_get_connect;
259 sp->complete = cs_complete_auto_head; /* only want HTTP header */
265 static void tcpip_create_cred(COMSTACK cs)
267 tcpip_state *sp = (tcpip_state *) cs->cprivate;
268 sp->cred_ptr = (struct tcpip_cred_ptr *) xmalloc(sizeof(*sp->cred_ptr));
269 sp->cred_ptr->ref = 1;
270 gnutls_certificate_allocate_credentials(&sp->cred_ptr->xcred);
275 COMSTACK ssl_type(int s, int flags, int protocol, void *vp)
283 p = tcpip_type(s, flags, protocol, 0);
289 sp = (tcpip_state *) p->cprivate;
292 sp->session = (gnutls_session_t) vp;
293 #elif HAVE_OPENSSL_SSL_H
294 sp->ctx = (SSL_CTX *) vp; /* may be NULL */
296 /* note: we don't handle already opened socket in SSL mode - yet */
302 static int ssl_check_error(COMSTACK h, tcpip_state *sp, int res)
304 #if HAVE_OPENSSL_SSL_H
305 int err = SSL_get_error(sp->ssl, res);
306 TRC(fprintf(stderr, "got err=%d\n", err));
307 if (err == SSL_ERROR_WANT_READ)
309 TRC(fprintf(stderr, " -> SSL_ERROR_WANT_READ\n"));
310 h->io_pending = CS_WANT_READ;
313 if (err == SSL_ERROR_WANT_WRITE)
315 TRC(fprintf(stderr, " -> SSL_ERROR_WANT_WRITE\n"));
316 h->io_pending = CS_WANT_WRITE;
320 TRC(fprintf(stderr, "ssl_check_error error=%d fatal=%d msg=%s\n",
322 gnutls_error_is_fatal(res),
323 gnutls_strerror(res)));
324 if (res == GNUTLS_E_AGAIN || res == GNUTLS_E_INTERRUPTED)
326 int dir = gnutls_record_get_direction(sp->session);
327 TRC(fprintf(stderr, " -> incomplete dir=%d\n", dir));
328 h->io_pending = dir ? CS_WANT_WRITE : CS_WANT_READ;
332 h->cerrno = CSERRORSSL;
338 /* resolve using getaddrinfo */
339 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 error = getaddrinfo(0, port, &hints, &res);
371 error = getaddrinfo(host, port, &hints, &res);
379 /* gethostbyname .. old systems */
380 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
385 short int port = default_port;
387 unsigned long tmpadd;
391 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
392 add->sin_family = AF_INET;
393 strncpy(buf, str, sizeof(buf)-1);
394 buf[sizeof(buf)-1] = 0;
395 if ((p = strchr(buf, '/')))
397 if ((p = strrchr(buf, ':')))
402 add->sin_port = htons(port);
403 if (!strcmp("@", buf))
405 add->sin_addr.s_addr = INADDR_ANY;
407 else if ((tmpadd = inet_addr(buf)) != -1)
409 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
411 else if ((hp = gethostbyname(buf)))
413 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
414 sizeof(struct in_addr));
422 void *tcpip_straddr(COMSTACK h, const char *str)
424 tcpip_state *sp = (tcpip_state *)h->cprivate;
425 const char *port = "210";
427 if (h->protocol == PROTO_HTTP)
433 freeaddrinfo(sp->ai);
434 sp->ai = tcpip_getaddrinfo(str, port);
435 if (sp->ai && h->state == CS_ST_UNBND)
438 /* try to make IPV6 socket first */
439 for (ai = sp->ai; ai; ai = ai->ai_next)
441 if (ai->ai_family == AF_INET6)
443 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
450 /* no IPV6 could be made.. Try them all */
451 for (ai = sp->ai; ai; ai = ai->ai_next)
453 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
463 if (!tcpip_set_blocking(h, h->flags))
469 void *tcpip_straddr(COMSTACK h, const char *str)
471 tcpip_state *sp = (tcpip_state *)h->cprivate;
473 if (h->protocol == PROTO_HTTP)
478 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
480 if (h->state == CS_ST_UNBND)
483 s = socket(AF_INET, SOCK_STREAM, 0);
488 if (!tcpip_set_blocking(h, h->flags))
495 int tcpip_more(COMSTACK h)
497 tcpip_state *sp = (tcpip_state *)h->cprivate;
499 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
503 * connect(2) will block (sometimes) - nothing we can do short of doing
504 * weird things like spawning subprocesses or threading or some weird junk
507 int tcpip_connect(COMSTACK h, void *address)
510 struct addrinfo *ai = (struct addrinfo *) address;
511 tcpip_state *sp = (tcpip_state *)h->cprivate;
513 struct sockaddr_in *add = (struct sockaddr_in *) address;
518 YAZ_SOCKLEN_T rbufsize = sizeof(recbuflen);
520 TRC(fprintf(stderr, "tcpip_connect\n"));
522 if (h->state != CS_ST_UNBND)
524 h->cerrno = CSOUTSTATE;
528 /* On Suns, you must set a bigger Receive Buffer BEFORE a call to connect
529 * This gives the connect a chance to negotiate with the other side
532 if (getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) < 0 )
537 TRC(fprintf( stderr, "Current Size of TCP Receive Buffer= %d\n",
539 recbuflen *= 10; /* lets be optimistic */
540 if (setsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, rbufsize ) < 0 )
545 if (getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) )
550 TRC(fprintf(stderr, "New Size of TCP Receive Buffer = %d\n",
555 r = connect(h->iofile, ai->ai_addr, ai->ai_addrlen);
556 freeaddrinfo(sp->ai);
559 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
564 if (WSAGetLastError() == WSAEWOULDBLOCK)
566 h->event = CS_CONNECT;
567 h->state = CS_ST_CONNECTING;
568 h->io_pending = CS_WANT_WRITE;
572 if (yaz_errno() == EINPROGRESS)
574 h->event = CS_CONNECT;
575 h->state = CS_ST_CONNECTING;
576 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
583 h->event = CS_CONNECT;
584 h->state = CS_ST_CONNECTING;
586 return tcpip_rcvconnect(h);
592 int tcpip_rcvconnect(COMSTACK h)
595 tcpip_state *sp = (tcpip_state *)h->cprivate;
597 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
599 if (h->state == CS_ST_DATAXFER)
601 if (h->state != CS_ST_CONNECTING)
603 h->cerrno = CSOUTSTATE;
607 if (h->type == ssl_type && !sp->session)
610 gnutls_global_init();
612 tcpip_create_cred(h);
614 gnutls_init(&sp->session, GNUTLS_CLIENT);
615 gnutls_set_default_priority(sp->session);
616 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
617 sp->cred_ptr->xcred);
619 /* cast to intermediate size_t to avoid GCC warning. */
620 gnutls_transport_set_ptr(sp->session,
621 (gnutls_transport_ptr_t)
623 res = gnutls_handshake(sp->session);
626 if (ssl_check_error(h, sp, res))
631 #elif HAVE_OPENSSL_SSL_H
632 if (h->type == ssl_type && !sp->ctx)
635 SSL_load_error_strings();
637 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_client_method());
640 h->cerrno = CSERRORSSL;
650 sp->ssl = SSL_new(sp->ctx);
651 SSL_set_fd(sp->ssl, h->iofile);
653 res = SSL_connect(sp->ssl);
656 if (ssl_check_error(h, sp, res))
663 h->state = CS_ST_DATAXFER;
667 #define CERTF "ztest.pem"
668 #define KEYF "ztest.pem"
670 static void tcpip_setsockopt(int fd)
676 if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&set, sizeof(int)))
678 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt TCP_NODELAY");
680 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char*)&len, sizeof(int)))
682 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt SNDBUF");
684 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char*)&len, sizeof(int)))
686 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt RCVBUF");
691 static int tcpip_bind(COMSTACK h, void *address, int mode)
694 tcpip_state *sp = (tcpip_state *)h->cprivate;
696 struct addrinfo *ai = (struct addrinfo *) address;
698 struct sockaddr *addr = (struct sockaddr *)address;
707 if (h->type == ssl_type && !sp->session)
710 gnutls_global_init();
712 tcpip_create_cred(h);
714 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
717 GNUTLS_X509_FMT_PEM);
718 if (res != GNUTLS_E_SUCCESS)
720 h->cerrno = CSERRORSSL;
724 #elif HAVE_OPENSSL_SSL_H
725 if (h->type == ssl_type && !sp->ctx)
728 SSL_load_error_strings();
730 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_server_method());
733 h->cerrno = CSERRORSSL;
742 res = SSL_CTX_use_certificate_file(sp->ctx, sp->cert_fname,
746 ERR_print_errors_fp(stderr);
749 res = SSL_CTX_use_PrivateKey_file(sp->ctx, sp->cert_fname,
753 ERR_print_errors_fp(stderr);
756 res = SSL_CTX_check_private_key(sp->ctx);
759 ERR_print_errors_fp(stderr);
763 TRC(fprintf(stderr, "ssl_bind\n"));
767 TRC(fprintf(stderr, "tcpip_bind\n"));
770 TRC(fprintf(stderr, "tcpip_bind\n"));
773 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
774 &one, sizeof(one)) < 0)
780 tcpip_setsockopt(h->iofile);
782 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
783 freeaddrinfo(sp->ai);
786 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
793 /* Allow a maximum-sized backlog of waiting-to-connect clients */
794 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
799 h->state = CS_ST_IDLE;
800 h->event = CS_LISTEN;
804 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
805 int (*check_ip)(void *cd, const char *a, int len, int t),
808 struct sockaddr_in addr;
809 YAZ_SOCKLEN_T len = sizeof(addr);
811 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
812 if (h->state != CS_ST_IDLE)
814 h->cerrno = CSOUTSTATE;
818 h->newfd = accept(h->iofile, 0, 0);
820 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
826 WSAGetLastError() == WSAEWOULDBLOCK
828 yaz_errno() == EWOULDBLOCK
830 #if EAGAIN != EWOULDBLOCK
831 || yaz_errno() == EAGAIN
836 h->cerrno = CSNODATA;
840 shutdown(h->iofile, SD_RECEIVE);
842 shutdown(h->iofile, SHUT_RD);
844 listen(h->iofile, SOMAXCONN);
849 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
850 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
853 if (check_ip && (*check_ip)(cd, (const char *) &addr,
854 sizeof(addr), AF_INET))
858 closesocket(h->newfd);
865 h->state = CS_ST_INCON;
866 tcpip_setsockopt(h->newfd);
870 COMSTACK tcpip_accept(COMSTACK h)
874 unsigned long tru = 1;
877 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
878 if (h->state == CS_ST_INCON)
880 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
881 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
885 closesocket(h->newfd);
892 memcpy(cnew, h, sizeof(*h));
893 cnew->iofile = h->newfd;
894 cnew->io_pending = 0;
896 if (!(state = (tcpip_state *)
897 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
903 closesocket(h->newfd);
911 if (!tcpip_set_blocking(cnew, cnew->flags))
917 closesocket(h->newfd);
929 state->altsize = state->altlen = 0;
930 state->towrite = state->written = -1;
931 state->complete = st->complete;
935 cnew->state = CS_ST_ACCEPT;
936 h->state = CS_ST_IDLE;
939 state->cred_ptr = st->cred_ptr;
945 (state->cred_ptr->ref)++;
946 gnutls_init(&state->session, GNUTLS_SERVER);
953 res = gnutls_set_default_priority(state->session);
954 if (res != GNUTLS_E_SUCCESS)
960 res = gnutls_credentials_set(state->session,
961 GNUTLS_CRD_CERTIFICATE,
962 st->cred_ptr->xcred);
963 if (res != GNUTLS_E_SUCCESS)
969 /* cast to intermediate size_t to avoid GCC warning. */
970 gnutls_transport_set_ptr(state->session,
971 (gnutls_transport_ptr_t)
972 (size_t) cnew->iofile);
974 #elif HAVE_OPENSSL_SSL_H
975 state->ctx = st->ctx;
976 state->ctx_alloc = 0;
977 state->ssl = st->ssl;
980 state->ssl = SSL_new(state->ctx);
981 SSL_set_fd(state->ssl, cnew->iofile);
984 state->connect_request_buf = 0;
985 state->connect_response_buf = 0;
988 if (h->state == CS_ST_ACCEPT)
991 tcpip_state *state = (tcpip_state *)h->cprivate;
994 int res = gnutls_handshake(state->session);
997 if (ssl_check_error(h, state, res))
999 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
1002 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
1006 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
1008 #elif HAVE_OPENSSL_SSL_H
1009 tcpip_state *state = (tcpip_state *)h->cprivate;
1014 res = SSL_accept(state->ssl);
1015 TRC(fprintf(stderr, "SSL_accept res=%d\n", res));
1018 if (ssl_check_error(h, state, res))
1025 TRC(fprintf(stderr, "SSL_accept complete\n"));
1031 h->cerrno = CSOUTSTATE;
1035 h->state = CS_ST_DATAXFER;
1040 #define CS_TCPIP_BUFCHUNK 4096
1043 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1044 * 0=connection closed.
1046 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1048 tcpip_state *sp = (tcpip_state *)h->cprivate;
1050 int tmpi, berlen, rest, req, tomove;
1051 int hasread = 0, res;
1053 TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
1054 if (sp->altlen) /* switch buffers */
1056 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1061 *bufsize = sp->altsize;
1062 hasread = sp->altlen;
1068 while (!(berlen = (*sp->complete)(*buf, hasread)))
1072 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1074 h->cerrno = CSYSERR;
1078 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1079 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1081 h->cerrno = CSYSERR;
1086 /* unfortunatly, sun sometimes forgets to set errno in recv
1087 when EWOULDBLOCK etc. would be required (res = -1) */
1089 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1090 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1093 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1094 strerror(yaz_errno())));
1096 if (WSAGetLastError() == WSAEWOULDBLOCK)
1098 h->io_pending = CS_WANT_READ;
1103 h->cerrno = CSYSERR;
1107 if (yaz_errno() == EWOULDBLOCK
1109 #if EAGAIN != EWOULDBLOCK
1110 || yaz_errno() == EAGAIN
1113 || yaz_errno() == EINPROGRESS
1115 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1119 h->io_pending = CS_WANT_READ;
1122 else if (yaz_errno() == 0)
1126 h->cerrno = CSYSERR;
1134 if (hasread > h->max_recv_bytes)
1136 h->cerrno = CSBUFSIZE;
1140 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1142 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1143 if (hasread > berlen)
1145 tomove = req = hasread - berlen;
1146 rest = tomove % CS_TCPIP_BUFCHUNK;
1148 req += CS_TCPIP_BUFCHUNK - rest;
1151 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1153 h->cerrno = CSYSERR;
1156 } else if (sp->altsize < req)
1157 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1159 h->cerrno = CSYSERR;
1162 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1164 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1166 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1167 *(*buf + berlen) = '\0';
1168 return berlen ? berlen : 1;
1174 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1175 * 0=connection closed.
1177 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1179 tcpip_state *sp = (tcpip_state *)h->cprivate;
1181 int tmpi, berlen, rest, req, tomove;
1182 int hasread = 0, res;
1184 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1185 if (sp->altlen) /* switch buffers */
1187 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1192 *bufsize = sp->altsize;
1193 hasread = sp->altlen;
1199 while (!(berlen = (*sp->complete)(*buf, hasread)))
1203 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1206 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1207 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1210 res = gnutls_record_recv(sp->session, *buf + hasread,
1214 if (ssl_check_error(h, sp, res))
1219 res = SSL_read(sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1220 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1223 if (ssl_check_error(h, sp, res))
1230 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1232 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1233 if (hasread > berlen)
1235 tomove = req = hasread - berlen;
1236 rest = tomove % CS_TCPIP_BUFCHUNK;
1238 req += CS_TCPIP_BUFCHUNK - rest;
1241 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1243 } else if (sp->altsize < req)
1244 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1246 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1248 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1250 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1251 *(*buf + berlen) = '\0';
1252 return berlen ? berlen : 1;
1257 * Returns 1, 0 or -1
1258 * In nonblocking mode, you must call again with same buffer while
1259 * return value is 1.
1261 int tcpip_put(COMSTACK h, char *buf, int size)
1264 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1266 TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
1269 if (state->towrite < 0)
1271 state->towrite = size;
1274 else if (state->towrite != size)
1276 h->cerrno = CSWRONGBUF;
1279 while (state->towrite > state->written)
1282 send(h->iofile, buf + state->written, size -
1293 WSAGetLastError() == WSAEWOULDBLOCK
1295 yaz_errno() == EWOULDBLOCK
1297 #if EAGAIN != EWOULDBLOCK
1298 || yaz_errno() == EAGAIN
1302 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1304 || yaz_errno() == EINPROGRESS
1308 TRC(fprintf(stderr, " Flow control stop\n"));
1309 h->io_pending = CS_WANT_WRITE;
1312 h->cerrno = CSYSERR;
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"));
1327 * Returns 1, 0 or -1
1328 * In nonblocking mode, you must call again with same buffer while
1329 * return value is 1.
1331 int ssl_put(COMSTACK h, char *buf, int size)
1334 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1336 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1339 if (state->towrite < 0)
1341 state->towrite = size;
1344 else if (state->towrite != size)
1346 h->cerrno = CSWRONGBUF;
1349 while (state->towrite > state->written)
1352 res = gnutls_record_send(state->session, buf + state->written,
1353 size - state->written);
1356 if (ssl_check_error(h, state, res))
1361 res = SSL_write(state->ssl, buf + state->written,
1362 size - state->written);
1365 if (ssl_check_error(h, state, res))
1370 state->written += res;
1371 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1372 res, state->written, size));
1374 state->towrite = state->written = -1;
1375 TRC(fprintf(stderr, " Ok\n"));
1380 int tcpip_close(COMSTACK h)
1382 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1384 TRC(fprintf(stderr, "tcpip_close h=%p pid=%d\n", h, getpid()));
1385 if (h->iofile != -1)
1389 gnutls_bye(sp->session, GNUTLS_SHUT_RDWR);
1390 #elif HAVE_OPENSSL_SSL_H
1393 SSL_shutdown(sp->ssl);
1397 closesocket(h->iofile);
1407 gnutls_deinit(sp->session);
1411 assert(sp->cred_ptr->ref > 0);
1413 if (--(sp->cred_ptr->ref) == 0)
1415 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1416 sp->cred_ptr->xcred, getpid()));
1417 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1418 xfree(sp->cred_ptr);
1422 #elif HAVE_OPENSSL_SSL_H
1425 TRC(fprintf(stderr, "SSL_free\n"));
1430 SSL_CTX_free(sp->ctx_alloc);
1432 #if HAVE_GETADDRINFO
1434 freeaddrinfo(sp->ai);
1436 xfree(sp->connect_request_buf);
1437 xfree(sp->connect_response_buf);
1443 char *tcpip_addrstr(COMSTACK h)
1445 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1446 char *r = 0, *buf = sp->buf;
1448 #if HAVE_GETADDRINFO
1450 struct sockaddr_storage addr;
1451 YAZ_SOCKLEN_T len = sizeof(addr);
1453 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1455 h->cerrno = CSYSERR;
1458 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1460 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1469 struct sockaddr_in addr;
1470 YAZ_SOCKLEN_T len = sizeof(addr);
1471 struct hostent *host;
1473 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1475 h->cerrno = CSYSERR;
1478 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1480 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1481 sizeof(addr.sin_addr),
1483 r = (char*) host->h_name;
1486 r = inet_ntoa(addr.sin_addr);
1489 if (h->protocol == PROTO_HTTP)
1490 sprintf(buf, "http:%s", r);
1492 sprintf(buf, "tcp:%s", r);
1496 if (h->protocol == PROTO_HTTP)
1497 sprintf(buf, "https:%s", r);
1499 sprintf(buf, "ssl:%s", r);
1501 #elif HAVE_OPENSSL_SSL_H
1504 if (h->protocol == PROTO_HTTP)
1505 sprintf(buf, "https:%s", r);
1507 sprintf(buf, "ssl:%s", r);
1513 static int tcpip_set_blocking(COMSTACK p, int flags)
1518 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1519 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1522 flag = fcntl(p->iofile, F_GETFL, 0);
1523 if (flags & CS_FLAGS_BLOCKING)
1524 flag = flag & ~O_NONBLOCK; /* blocking */
1527 flag = flag | O_NONBLOCK; /* non-blocking */
1528 signal(SIGPIPE, SIG_IGN);
1530 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1537 void cs_print_session_info(COMSTACK cs)
1540 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1543 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1545 printf("X509 certificate\n");
1547 #elif HAVE_OPENSSL_SSL_H
1548 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1549 SSL *ssl = (SSL *) sp->ssl;
1552 X509 *server_cert = SSL_get_peer_certificate(ssl);
1558 BIO *bio = BIO_new(BIO_s_mem());
1560 /* get PEM buffer in memory */
1561 PEM_write_bio_X509(bio, server_cert);
1562 pem_len = BIO_get_mem_data(bio, &pem_buf);
1563 fwrite(pem_buf, pem_len, 1, stdout);
1565 /* print all info on screen .. */
1566 X509_print_fp(stdout, server_cert);
1569 X509_free(server_cert);
1575 void *cs_get_ssl(COMSTACK cs)
1577 #if HAVE_OPENSSL_SSL_H
1578 struct tcpip_state *sp;
1579 if (!cs || cs->type != ssl_type)
1581 sp = (struct tcpip_state *) cs->cprivate;
1588 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1591 struct tcpip_state *sp;
1592 if (!cs || cs->type != ssl_type)
1594 sp = (struct tcpip_state *) cs->cprivate;
1595 #if HAVE_OPENSSL_SSL_H
1598 sp->ctx = (SSL_CTX *) ctx;
1606 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1609 struct tcpip_state *sp;
1610 if (!cs || cs->type != ssl_type)
1612 sp = (struct tcpip_state *) cs->cprivate;
1613 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1614 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1621 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1623 #if HAVE_OPENSSL_SSL_H
1624 SSL *ssl = (SSL *) cs_get_ssl(cs);
1627 X509 *server_cert = SSL_get_peer_certificate(ssl);
1630 BIO *bio = BIO_new(BIO_s_mem());
1632 /* get PEM buffer in memory */
1633 PEM_write_bio_X509(bio, server_cert);
1634 *len = BIO_get_mem_data(bio, &pem_buf);
1635 *buf = (char *) xmalloc(*len);
1636 memcpy(*buf, pem_buf, *len);
1645 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1647 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1649 int r = tcpip_put(h, state->connect_request_buf,
1650 state->connect_request_len);
1654 h->f_put = tcpip_put; /* switch to normal tcpip put */
1655 r = tcpip_put(h, buf, size);
1660 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1662 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1665 r = tcpip_get(h, &state->connect_response_buf,
1666 &state->connect_response_len);
1669 /* got the connect response completely */
1670 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1671 h->f_get = tcpip_get;
1672 return tcpip_get(h, buf, bufsize);
1679 * c-file-style: "Stroustrup"
1680 * indent-tabs-mode: nil
1682 * vim: shiftwidth=4 tabstop=8 expandtab