1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2008 Index Data
3 * See the file LICENSE for details.
7 * \brief Implements TCP/IP + SSL COMSTACK.
18 #include <sys/types.h>
29 /* VS 2003 or later has getaddrinfo; older versions do not */
33 #define HAVE_GETADDRINFO 1
35 #define HAVE_GETADDRINFO 0
39 #include <netinet/in.h>
41 #include <arpa/inet.h>
42 #include <netinet/tcp.h>
46 #include <sys/socket.h>
53 #include <gnutls/x509.h>
54 #include <gnutls/gnutls.h>
58 #include <gnutls/openssl.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>
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 ENABLE_SSL == 1
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 ENABLE_SSL == 1
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 = 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;
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;
321 TRC(fprintf(stderr, "ssl_check_error error=%d fatal=%d msg=%s\n",
323 gnutls_error_is_fatal(res),
324 gnutls_strerror(res)));
325 if (res == GNUTLS_E_AGAIN || res == GNUTLS_E_INTERRUPTED)
327 int dir = gnutls_record_get_direction(sp->session);
328 TRC(fprintf(stderr, " -> incomplete dir=%d\n", dir));
329 h->io_pending = dir ? CS_WANT_WRITE : CS_WANT_READ;
333 int tls_error = sp->ssl->last_error;
334 TRC(fprintf(stderr, "ssl_check_error error=%d fatal=%d msg=%s\n",
336 gnutls_error_is_fatal(tls_error),
337 gnutls_strerror(tls_error)));
338 if (tls_error == GNUTLS_E_AGAIN || tls_error == GNUTLS_E_INTERRUPTED)
340 int dir = gnutls_record_get_direction(sp->ssl->gnutls_state);
341 TRC(fprintf(stderr, " -> incomplete dir=%d\n", dir));
342 h->io_pending = dir ? CS_WANT_WRITE : CS_WANT_READ;
347 h->cerrno = CSERRORSSL;
353 /* resolve using getaddrinfo */
354 struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port)
356 struct addrinfo hints, *res;
361 hints.ai_family = AF_UNSPEC;
362 hints.ai_socktype = SOCK_STREAM;
363 hints.ai_protocol = 0;
364 hints.ai_addrlen = 0;
365 hints.ai_addr = NULL;
366 hints.ai_canonname = NULL;
367 hints.ai_next = NULL;
369 strncpy(host, str, sizeof(host)-1);
370 host[sizeof(host)-1] = 0;
371 if ((p = strchr(host, '/')))
373 if ((p = strrchr(host, ':')))
379 if (!strcmp("@", host))
381 hints.ai_flags = AI_PASSIVE;
382 error = getaddrinfo(0, port, &hints, &res);
386 error = getaddrinfo(host, port, &hints, &res);
394 /* gethostbyname .. old systems */
395 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
400 short int port = default_port;
402 unsigned long tmpadd;
406 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
407 add->sin_family = AF_INET;
408 strncpy(buf, str, sizeof(buf)-1);
409 buf[sizeof(buf)-1] = 0;
410 if ((p = strchr(buf, '/')))
412 if ((p = strrchr(buf, ':')))
417 add->sin_port = htons(port);
418 if (!strcmp("@", buf))
420 add->sin_addr.s_addr = INADDR_ANY;
422 else if ((tmpadd = inet_addr(buf)) != -1)
424 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
426 else if ((hp = gethostbyname(buf)))
428 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
429 sizeof(struct in_addr));
438 void *tcpip_straddr(COMSTACK h, const char *str)
440 tcpip_state *sp = (tcpip_state *)h->cprivate;
441 const char *port = "210";
442 if (h->protocol == PROTO_HTTP)
448 freeaddrinfo(sp->ai);
449 sp->ai = tcpip_getaddrinfo(str, port);
450 if (sp->ai && h->state == CS_ST_UNBND)
453 struct addrinfo *ai = sp->ai;
454 for (; ai; ai = ai->ai_next)
456 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
464 if (!tcpip_set_blocking(h, h->flags))
470 void *tcpip_straddr(COMSTACK h, const char *str)
472 tcpip_state *sp = (tcpip_state *)h->cprivate;
474 if (h->protocol == PROTO_HTTP)
479 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
481 if (h->state == CS_ST_UNBND)
484 s = socket(AF_INET, SOCK_STREAM, 0);
489 if (!tcpip_set_blocking(h, h->flags))
496 int tcpip_more(COMSTACK h)
498 tcpip_state *sp = (tcpip_state *)h->cprivate;
500 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
504 * connect(2) will block (sometimes) - nothing we can do short of doing
505 * weird things like spawning subprocesses or threading or some weird junk
508 int tcpip_connect(COMSTACK h, void *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 if (sp->ai != (struct addrinfo *) address)
530 h->cerrno = CSOUTSTATE;
535 /* On Suns, you must set a bigger Receive Buffer BEFORE a call to connect
536 * This gives the connect a chance to negotiate with the other side
539 if (getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) < 0 )
544 TRC(fprintf( stderr, "Current Size of TCP Receive Buffer= %d\n",
546 recbuflen *= 10; /* lets be optimistic */
547 if (setsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, rbufsize ) < 0 )
552 if (getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) )
557 TRC(fprintf(stderr, "New Size of TCP Receive Buffer = %d\n",
562 r = connect(h->iofile, sp->ai->ai_addr, sp->ai->ai_addrlen);
563 freeaddrinfo(sp->ai);
566 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
571 if (WSAGetLastError() == WSAEWOULDBLOCK)
573 h->event = CS_CONNECT;
574 h->state = CS_ST_CONNECTING;
575 h->io_pending = CS_WANT_WRITE;
579 if (yaz_errno() == EINPROGRESS)
581 h->event = CS_CONNECT;
582 h->state = CS_ST_CONNECTING;
583 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
590 h->event = CS_CONNECT;
591 h->state = CS_ST_CONNECTING;
593 return tcpip_rcvconnect(h);
599 int tcpip_rcvconnect(COMSTACK h)
602 tcpip_state *sp = (tcpip_state *)h->cprivate;
604 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
606 if (h->state == CS_ST_DATAXFER)
608 if (h->state != CS_ST_CONNECTING)
610 h->cerrno = CSOUTSTATE;
614 if (h->type == ssl_type && !sp->session)
617 gnutls_global_init();
619 tcpip_create_cred(h);
621 gnutls_init(&sp->session, GNUTLS_CLIENT);
622 gnutls_priority_set_direct(sp->session, "PERFORMANCE", NULL);
623 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
624 sp->cred_ptr->xcred);
626 gnutls_transport_set_ptr(sp->session, (gnutls_transport_ptr_t) h->iofile);
628 res = gnutls_handshake(sp->session);
631 if (ssl_check_error(h, sp, res))
636 #elif ENABLE_SSL == 1
637 if (h->type == ssl_type && !sp->ctx)
640 SSL_load_error_strings();
642 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_client_method());
645 h->cerrno = CSERRORSSL;
655 sp->ssl = SSL_new(sp->ctx);
656 SSL_set_fd(sp->ssl, h->iofile);
658 res = SSL_connect(sp->ssl);
661 if (ssl_check_error(h, sp, res))
668 h->state = CS_ST_DATAXFER;
672 #define CERTF "ztest.pem"
673 #define KEYF "ztest.pem"
675 static void tcpip_setsockopt(int fd)
681 if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&set, sizeof(int)))
683 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt TCP_NODELAY");
685 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char*)&len, sizeof(int)))
687 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt SNDBUF");
689 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char*)&len, sizeof(int)))
691 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt RCVBUF");
696 static int tcpip_bind(COMSTACK h, void *address, int mode)
699 tcpip_state *sp = (tcpip_state *)h->cprivate;
702 struct sockaddr *addr = (struct sockaddr *)address;
711 if (sp->ai != (struct addrinfo *) address)
713 h->cerrno = CSOUTSTATE;
719 if (h->type == ssl_type && !sp->session)
722 gnutls_global_init();
724 tcpip_create_cred(h);
726 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
729 GNUTLS_X509_FMT_PEM);
730 if (res != GNUTLS_E_SUCCESS)
732 h->cerrno = CSERRORSSL;
736 #elif ENABLE_SSL == 1
737 if (h->type == ssl_type && !sp->ctx)
740 SSL_load_error_strings();
742 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_server_method());
745 h->cerrno = CSERRORSSL;
754 res = SSL_CTX_use_certificate_file(sp->ctx, sp->cert_fname,
758 #if HAVE_OPENSSL_SSL_H
759 ERR_print_errors_fp(stderr);
761 fprintf(stderr, " SSL_CTX_use_certificate_file %s failed\n",
766 res = SSL_CTX_use_PrivateKey_file(sp->ctx, sp->cert_fname,
770 #if HAVE_OPENSSL_SSL_H
771 ERR_print_errors_fp(stderr);
773 fprintf(stderr, " SSL_CTX_use_certificate_file %s failed\n",
778 #if HAVE_OPENSSL_SSL_H
779 res = SSL_CTX_check_private_key(sp->ctx);
782 ERR_print_errors_fp(stderr);
787 TRC(fprintf(stderr, "ssl_bind\n"));
791 TRC(fprintf(stderr, "tcpip_bind\n"));
794 TRC(fprintf(stderr, "tcpip_bind\n"));
797 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
798 &one, sizeof(one)) < 0)
804 tcpip_setsockopt(h->iofile);
806 r = bind(h->iofile, sp->ai->ai_addr, sp->ai->ai_addrlen);
807 freeaddrinfo(sp->ai);
810 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
817 /* Allow a maximum-sized backlog of waiting-to-connect clients */
818 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
823 h->state = CS_ST_IDLE;
824 h->event = CS_LISTEN;
828 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
829 int (*check_ip)(void *cd, const char *a, int len, int t),
832 struct sockaddr_in addr;
833 YAZ_SOCKLEN_T len = sizeof(addr);
835 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
836 if (h->state != CS_ST_IDLE)
838 h->cerrno = CSOUTSTATE;
841 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
846 WSAGetLastError() == WSAEWOULDBLOCK
848 yaz_errno() == EWOULDBLOCK
850 #if EAGAIN != EWOULDBLOCK
851 || yaz_errno() == EAGAIN
856 h->cerrno = CSNODATA;
860 shutdown(h->iofile, SD_RECEIVE);
862 shutdown(h->iofile, SHUT_RD);
864 listen(h->iofile, SOMAXCONN);
869 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
870 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
873 if (check_ip && (*check_ip)(cd, (const char *) &addr,
874 sizeof(addr), AF_INET))
878 closesocket(h->newfd);
885 h->state = CS_ST_INCON;
886 tcpip_setsockopt(h->newfd);
890 COMSTACK tcpip_accept(COMSTACK h)
894 unsigned long tru = 1;
897 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
898 if (h->state == CS_ST_INCON)
900 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
901 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
905 closesocket(h->newfd);
912 memcpy(cnew, h, sizeof(*h));
913 cnew->iofile = h->newfd;
914 cnew->io_pending = 0;
916 if (!(state = (tcpip_state *)
917 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
923 closesocket(h->newfd);
931 if (!tcpip_set_blocking(cnew, cnew->flags))
937 closesocket(h->newfd);
949 state->altsize = state->altlen = 0;
950 state->towrite = state->written = -1;
951 state->complete = st->complete;
955 cnew->state = CS_ST_ACCEPT;
956 h->state = CS_ST_IDLE;
959 state->cred_ptr = st->cred_ptr;
965 (state->cred_ptr->ref)++;
966 gnutls_init(&state->session, GNUTLS_SERVER);
973 res = gnutls_priority_set_direct(state->session,
974 "PERFORMANCE", NULL);
975 if (res != GNUTLS_E_SUCCESS)
981 res = gnutls_credentials_set(state->session,
982 GNUTLS_CRD_CERTIFICATE,
983 st->cred_ptr->xcred);
984 if (res != GNUTLS_E_SUCCESS)
990 gnutls_transport_set_ptr(state->session,
991 (gnutls_transport_ptr_t) cnew->iofile);
993 #elif ENABLE_SSL == 1
994 state->ctx = st->ctx;
995 state->ctx_alloc = 0;
996 state->ssl = st->ssl;
999 state->ssl = SSL_new(state->ctx);
1000 SSL_set_fd(state->ssl, cnew->iofile);
1003 state->connect_request_buf = 0;
1004 state->connect_response_buf = 0;
1007 if (h->state == CS_ST_ACCEPT)
1010 tcpip_state *state = (tcpip_state *)h->cprivate;
1013 int res = gnutls_handshake(state->session);
1016 if (ssl_check_error(h, state, res))
1018 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
1021 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
1025 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
1027 #elif ENABLE_SSL == 1
1028 tcpip_state *state = (tcpip_state *)h->cprivate;
1033 res = SSL_accept(state->ssl);
1034 TRC(fprintf(stderr, "SSL_accept res=%d\n", res));
1037 if (ssl_check_error(h, state, res))
1044 TRC(fprintf(stderr, "SSL_accept complete\n"));
1050 h->cerrno = CSOUTSTATE;
1054 h->state = CS_ST_DATAXFER;
1059 #define CS_TCPIP_BUFCHUNK 4096
1062 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1063 * 0=connection closed.
1065 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1067 tcpip_state *sp = (tcpip_state *)h->cprivate;
1069 int tmpi, berlen, rest, req, tomove;
1070 int hasread = 0, res;
1072 TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
1073 if (sp->altlen) /* switch buffers */
1075 TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
1076 (unsigned) sp->altbuf));
1080 *bufsize = sp->altsize;
1081 hasread = sp->altlen;
1087 while (!(berlen = (*sp->complete)(*buf, hasread)))
1091 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1093 h->cerrno = CSYSERR;
1097 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1098 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1100 h->cerrno = CSYSERR;
1105 /* unfortunatly, sun sometimes forgets to set errno in recv
1106 when EWOULDBLOCK etc. would be required (res = -1) */
1108 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1109 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1112 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1113 strerror(yaz_errno())));
1115 if (WSAGetLastError() == WSAEWOULDBLOCK)
1117 h->io_pending = CS_WANT_READ;
1122 h->cerrno = CSYSERR;
1126 if (yaz_errno() == EWOULDBLOCK
1128 #if EAGAIN != EWOULDBLOCK
1129 || yaz_errno() == EAGAIN
1132 || yaz_errno() == EINPROGRESS
1134 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1138 h->io_pending = CS_WANT_READ;
1141 else if (yaz_errno() == 0)
1145 h->cerrno = CSYSERR;
1153 if (hasread > h->max_recv_bytes)
1155 h->cerrno = CSBUFSIZE;
1159 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1161 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1162 if (hasread > berlen)
1164 tomove = req = hasread - berlen;
1165 rest = tomove % CS_TCPIP_BUFCHUNK;
1167 req += CS_TCPIP_BUFCHUNK - rest;
1170 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1172 h->cerrno = CSYSERR;
1175 } else if (sp->altsize < req)
1176 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1178 h->cerrno = CSYSERR;
1181 TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
1182 (unsigned) sp->altbuf));
1183 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1185 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1186 *(*buf + berlen) = '\0';
1187 return berlen ? berlen : 1;
1193 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1194 * 0=connection closed.
1196 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1198 tcpip_state *sp = (tcpip_state *)h->cprivate;
1200 int tmpi, berlen, rest, req, tomove;
1201 int hasread = 0, res;
1203 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1204 if (sp->altlen) /* switch buffers */
1206 TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
1207 (unsigned) sp->altbuf));
1211 *bufsize = sp->altsize;
1212 hasread = sp->altlen;
1218 while (!(berlen = (*sp->complete)(*buf, hasread)))
1222 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1225 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1226 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1229 res = gnutls_record_recv(sp->session, *buf + hasread,
1233 if (ssl_check_error(h, sp, res))
1238 res = SSL_read(sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1239 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1242 if (ssl_check_error(h, sp, res))
1249 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1251 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1252 if (hasread > berlen)
1254 tomove = req = hasread - berlen;
1255 rest = tomove % CS_TCPIP_BUFCHUNK;
1257 req += CS_TCPIP_BUFCHUNK - rest;
1260 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1262 } else if (sp->altsize < req)
1263 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1265 TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
1266 (unsigned) sp->altbuf));
1267 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1269 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1270 *(*buf + berlen) = '\0';
1271 return berlen ? berlen : 1;
1276 * Returns 1, 0 or -1
1277 * In nonblocking mode, you must call again with same buffer while
1278 * return value is 1.
1280 int tcpip_put(COMSTACK h, char *buf, int size)
1283 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1285 TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
1288 if (state->towrite < 0)
1290 state->towrite = size;
1293 else if (state->towrite != size)
1295 h->cerrno = CSWRONGBUF;
1298 while (state->towrite > state->written)
1301 send(h->iofile, buf + state->written, size -
1312 WSAGetLastError() == WSAEWOULDBLOCK
1314 yaz_errno() == EWOULDBLOCK
1316 #if EAGAIN != EWOULDBLOCK
1317 || yaz_errno() == EAGAIN
1321 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1323 || yaz_errno() == EINPROGRESS
1327 TRC(fprintf(stderr, " Flow control stop\n"));
1328 h->io_pending = CS_WANT_WRITE;
1331 h->cerrno = CSYSERR;
1334 state->written += res;
1335 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1336 res, state->written, size));
1338 state->towrite = state->written = -1;
1339 TRC(fprintf(stderr, " Ok\n"));
1346 * Returns 1, 0 or -1
1347 * In nonblocking mode, you must call again with same buffer while
1348 * return value is 1.
1350 int ssl_put(COMSTACK h, char *buf, int size)
1353 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1355 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1358 if (state->towrite < 0)
1360 state->towrite = size;
1363 else if (state->towrite != size)
1365 h->cerrno = CSWRONGBUF;
1368 while (state->towrite > state->written)
1371 res = gnutls_record_send(state->session, buf + state->written,
1372 size - state->written);
1375 if (ssl_check_error(h, state, res))
1379 #elif ENABLE_SSL == 1
1380 res = SSL_write(state->ssl, buf + state->written,
1381 size - state->written);
1384 if (ssl_check_error(h, state, res))
1389 state->written += res;
1390 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1391 res, state->written, size));
1393 state->towrite = state->written = -1;
1394 TRC(fprintf(stderr, " Ok\n"));
1399 int tcpip_close(COMSTACK h)
1401 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1403 TRC(fprintf(stderr, "tcpip_close h=%p pid=%d\n", h, getpid()));
1404 if (h->iofile != -1)
1408 gnutls_bye(sp->session, GNUTLS_SHUT_RDWR);
1409 #elif ENABLE_SSL == 2
1412 SSL_shutdown(sp->ssl);
1416 closesocket(h->iofile);
1426 gnutls_deinit(sp->session);
1430 assert(sp->cred_ptr->ref > 0);
1432 if (--(sp->cred_ptr->ref) == 0)
1434 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1435 sp->cred_ptr->xcred, getpid()));
1436 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1437 xfree(sp->cred_ptr);
1441 #elif ENABLE_SSL == 1
1444 TRC(fprintf(stderr, "SSL_free\n"));
1449 SSL_CTX_free(sp->ctx_alloc);
1451 #if HAVE_GETADDRINFO
1453 freeaddrinfo(sp->ai);
1455 xfree(sp->connect_request_buf);
1456 xfree(sp->connect_response_buf);
1462 char *tcpip_addrstr(COMSTACK h)
1464 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1465 char *r = 0, *buf = sp->buf;
1467 #if HAVE_GETADDRINFO
1469 struct sockaddr_storage addr;
1470 YAZ_SOCKLEN_T len = sizeof(addr);
1472 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1474 h->cerrno = CSYSERR;
1477 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1479 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1488 struct sockaddr_in addr;
1489 YAZ_SOCKLEN_T len = sizeof(addr);
1490 struct hostent *host;
1492 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1494 h->cerrno = CSYSERR;
1497 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1499 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1500 sizeof(addr.sin_addr),
1502 r = (char*) host->h_name;
1505 r = inet_ntoa(addr.sin_addr);
1508 if (h->protocol == PROTO_HTTP)
1509 sprintf(buf, "http:%s", r);
1511 sprintf(buf, "tcp:%s", r);
1515 if (h->protocol == PROTO_HTTP)
1516 sprintf(buf, "https:%s", r);
1518 sprintf(buf, "ssl:%s", r);
1520 #elif ENABLE_SSL == 1
1523 if (h->protocol == PROTO_HTTP)
1524 sprintf(buf, "https:%s", r);
1526 sprintf(buf, "ssl:%s", r);
1532 int static tcpip_set_blocking(COMSTACK p, int flags)
1537 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1538 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1541 flag = fcntl(p->iofile, F_GETFL, 0);
1542 if (flags & CS_FLAGS_BLOCKING)
1543 flag = flag & ~O_NONBLOCK; /* blocking */
1546 flag = flag | O_NONBLOCK; /* non-blocking */
1547 signal(SIGPIPE, SIG_IGN);
1549 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1556 void cs_print_session_info(COMSTACK cs)
1560 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1563 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1565 printf("X509 certificate\n");
1568 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1569 SSL *ssl = (SSL *) sp->ssl;
1572 gnutls_session_t session = ssl->gnutls_state;
1573 if (gnutls_certificate_type_get(session) != GNUTLS_CRT_X509)
1575 printf("X509 certificate\n");
1579 #if HAVE_OPENSSL_SSL_H
1580 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1581 SSL *ssl = (SSL *) sp->ssl;
1584 X509 *server_cert = SSL_get_peer_certificate(ssl);
1590 BIO *bio = BIO_new(BIO_s_mem());
1592 /* get PEM buffer in memory */
1593 PEM_write_bio_X509(bio, server_cert);
1594 pem_len = BIO_get_mem_data(bio, &pem_buf);
1595 fwrite(pem_buf, pem_len, 1, stdout);
1597 /* print all info on screen .. */
1598 X509_print_fp(stdout, server_cert);
1601 X509_free(server_cert);
1607 void *cs_get_ssl(COMSTACK cs)
1609 #if HAVE_OPENSSL_SSL_H
1610 struct tcpip_state *sp;
1611 if (!cs || cs->type != ssl_type)
1613 sp = (struct tcpip_state *) cs->cprivate;
1621 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1623 struct tcpip_state *sp;
1624 if (!cs || cs->type != ssl_type)
1626 sp = (struct tcpip_state *) cs->cprivate;
1630 sp->ctx = (SSL_CTX *) ctx;
1635 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1637 struct tcpip_state *sp;
1638 if (!cs || cs->type != ssl_type)
1640 sp = (struct tcpip_state *) cs->cprivate;
1641 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1642 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1646 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1648 #if HAVE_OPENSSL_SSL_H
1649 SSL *ssl = (SSL *) cs_get_ssl(cs);
1652 X509 *server_cert = SSL_get_peer_certificate(ssl);
1655 BIO *bio = BIO_new(BIO_s_mem());
1657 /* get PEM buffer in memory */
1658 PEM_write_bio_X509(bio, server_cert);
1659 *len = BIO_get_mem_data(bio, &pem_buf);
1660 *buf = (char *) xmalloc(*len);
1661 memcpy(*buf, pem_buf, *len);
1670 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1675 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1680 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1687 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1689 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1691 int r = tcpip_put(h, state->connect_request_buf,
1692 state->connect_request_len);
1696 h->f_put = tcpip_put; /* switch to normal tcpip put */
1697 r = tcpip_put(h, buf, size);
1702 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1704 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1707 r = tcpip_get(h, &state->connect_response_buf,
1708 &state->connect_response_len);
1711 /* got the connect response completely */
1712 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1713 h->f_get = tcpip_get;
1714 return tcpip_get(h, buf, bufsize);
1721 * indent-tabs-mode: nil
1723 * vim: shiftwidth=4 tabstop=8 expandtab