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";
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)
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);
453 /* no IPV6 could be made.. Try them all */
454 for (ai = sp->ai; ai; ai = ai->ai_next)
456 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
468 if (!tcpip_set_blocking(h, h->flags))
474 void *tcpip_straddr(COMSTACK h, const char *str)
476 tcpip_state *sp = (tcpip_state *)h->cprivate;
478 if (h->protocol == PROTO_HTTP)
483 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
485 if (h->state == CS_ST_UNBND)
488 s = socket(AF_INET, SOCK_STREAM, 0);
493 if (!tcpip_set_blocking(h, h->flags))
500 int tcpip_more(COMSTACK h)
502 tcpip_state *sp = (tcpip_state *)h->cprivate;
504 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
508 * connect(2) will block (sometimes) - nothing we can do short of doing
509 * weird things like spawning subprocesses or threading or some weird junk
512 int tcpip_connect(COMSTACK h, void *address)
515 tcpip_state *sp = (tcpip_state *)h->cprivate;
517 struct sockaddr_in *add = (struct sockaddr_in *) address;
522 YAZ_SOCKLEN_T rbufsize = sizeof(recbuflen);
524 TRC(fprintf(stderr, "tcpip_connect\n"));
526 if (h->state != CS_ST_UNBND)
528 h->cerrno = CSOUTSTATE;
532 if (sp->ai != (struct addrinfo *) address)
534 h->cerrno = CSOUTSTATE;
539 /* On Suns, you must set a bigger Receive Buffer BEFORE a call to connect
540 * This gives the connect a chance to negotiate with the other side
543 if (getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) < 0 )
548 TRC(fprintf( stderr, "Current Size of TCP Receive Buffer= %d\n",
550 recbuflen *= 10; /* lets be optimistic */
551 if (setsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, rbufsize ) < 0 )
556 if (getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) )
561 TRC(fprintf(stderr, "New Size of TCP Receive Buffer = %d\n",
566 r = connect(h->iofile, sp->ai->ai_addr, sp->ai->ai_addrlen);
567 freeaddrinfo(sp->ai);
570 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
575 if (WSAGetLastError() == WSAEWOULDBLOCK)
577 h->event = CS_CONNECT;
578 h->state = CS_ST_CONNECTING;
579 h->io_pending = CS_WANT_WRITE;
583 if (yaz_errno() == EINPROGRESS)
585 h->event = CS_CONNECT;
586 h->state = CS_ST_CONNECTING;
587 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
594 h->event = CS_CONNECT;
595 h->state = CS_ST_CONNECTING;
597 return tcpip_rcvconnect(h);
603 int tcpip_rcvconnect(COMSTACK h)
606 tcpip_state *sp = (tcpip_state *)h->cprivate;
608 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
610 if (h->state == CS_ST_DATAXFER)
612 if (h->state != CS_ST_CONNECTING)
614 h->cerrno = CSOUTSTATE;
618 if (h->type == ssl_type && !sp->session)
621 gnutls_global_init();
623 tcpip_create_cred(h);
625 gnutls_init(&sp->session, GNUTLS_CLIENT);
626 gnutls_set_default_priority(sp->session);
627 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
628 sp->cred_ptr->xcred);
630 /* cast to intermediate size_t to avoid GCC warning. */
631 gnutls_transport_set_ptr(sp->session,
632 (gnutls_transport_ptr_t)
634 res = gnutls_handshake(sp->session);
637 if (ssl_check_error(h, sp, res))
642 #elif HAVE_OPENSSL_SSL_H
643 if (h->type == ssl_type && !sp->ctx)
646 SSL_load_error_strings();
648 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_client_method());
651 h->cerrno = CSERRORSSL;
661 sp->ssl = SSL_new(sp->ctx);
662 SSL_set_fd(sp->ssl, h->iofile);
664 res = SSL_connect(sp->ssl);
667 if (ssl_check_error(h, sp, res))
674 h->state = CS_ST_DATAXFER;
678 #define CERTF "ztest.pem"
679 #define KEYF "ztest.pem"
681 static void tcpip_setsockopt(int fd)
687 if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&set, sizeof(int)))
689 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt TCP_NODELAY");
691 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char*)&len, sizeof(int)))
693 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt SNDBUF");
695 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char*)&len, sizeof(int)))
697 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt RCVBUF");
702 static int tcpip_bind(COMSTACK h, void *address, int mode)
705 tcpip_state *sp = (tcpip_state *)h->cprivate;
708 struct sockaddr *addr = (struct sockaddr *)address;
717 if (sp->ai != (struct addrinfo *) address)
719 h->cerrno = CSOUTSTATE;
725 if (h->type == ssl_type && !sp->session)
728 gnutls_global_init();
730 tcpip_create_cred(h);
732 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
735 GNUTLS_X509_FMT_PEM);
736 if (res != GNUTLS_E_SUCCESS)
738 h->cerrno = CSERRORSSL;
742 #elif HAVE_OPENSSL_SSL_H
743 if (h->type == ssl_type && !sp->ctx)
746 SSL_load_error_strings();
748 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_server_method());
751 h->cerrno = CSERRORSSL;
760 res = SSL_CTX_use_certificate_file(sp->ctx, sp->cert_fname,
764 ERR_print_errors_fp(stderr);
767 res = SSL_CTX_use_PrivateKey_file(sp->ctx, sp->cert_fname,
771 ERR_print_errors_fp(stderr);
774 res = SSL_CTX_check_private_key(sp->ctx);
777 ERR_print_errors_fp(stderr);
781 TRC(fprintf(stderr, "ssl_bind\n"));
785 TRC(fprintf(stderr, "tcpip_bind\n"));
788 TRC(fprintf(stderr, "tcpip_bind\n"));
791 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
792 &one, sizeof(one)) < 0)
798 tcpip_setsockopt(h->iofile);
800 r = bind(h->iofile, sp->ai->ai_addr, sp->ai->ai_addrlen);
801 freeaddrinfo(sp->ai);
804 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
811 /* Allow a maximum-sized backlog of waiting-to-connect clients */
812 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
817 h->state = CS_ST_IDLE;
818 h->event = CS_LISTEN;
822 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
823 int (*check_ip)(void *cd, const char *a, int len, int t),
826 struct sockaddr_in addr;
827 YAZ_SOCKLEN_T len = sizeof(addr);
829 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
830 if (h->state != CS_ST_IDLE)
832 h->cerrno = CSOUTSTATE;
836 h->newfd = accept(h->iofile, 0, 0);
838 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
844 WSAGetLastError() == WSAEWOULDBLOCK
846 yaz_errno() == EWOULDBLOCK
848 #if EAGAIN != EWOULDBLOCK
849 || yaz_errno() == EAGAIN
854 h->cerrno = CSNODATA;
858 shutdown(h->iofile, SD_RECEIVE);
860 shutdown(h->iofile, SHUT_RD);
862 listen(h->iofile, SOMAXCONN);
867 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
868 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
871 if (check_ip && (*check_ip)(cd, (const char *) &addr,
872 sizeof(addr), AF_INET))
876 closesocket(h->newfd);
883 h->state = CS_ST_INCON;
884 tcpip_setsockopt(h->newfd);
888 COMSTACK tcpip_accept(COMSTACK h)
892 unsigned long tru = 1;
895 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
896 if (h->state == CS_ST_INCON)
898 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
899 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
903 closesocket(h->newfd);
910 memcpy(cnew, h, sizeof(*h));
911 cnew->iofile = h->newfd;
912 cnew->io_pending = 0;
914 if (!(state = (tcpip_state *)
915 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
921 closesocket(h->newfd);
929 if (!tcpip_set_blocking(cnew, cnew->flags))
935 closesocket(h->newfd);
947 state->altsize = state->altlen = 0;
948 state->towrite = state->written = -1;
949 state->complete = st->complete;
953 cnew->state = CS_ST_ACCEPT;
954 h->state = CS_ST_IDLE;
957 state->cred_ptr = st->cred_ptr;
963 (state->cred_ptr->ref)++;
964 gnutls_init(&state->session, GNUTLS_SERVER);
971 res = gnutls_set_default_priority(state->session);
972 if (res != GNUTLS_E_SUCCESS)
978 res = gnutls_credentials_set(state->session,
979 GNUTLS_CRD_CERTIFICATE,
980 st->cred_ptr->xcred);
981 if (res != GNUTLS_E_SUCCESS)
987 /* cast to intermediate size_t to avoid GCC warning. */
988 gnutls_transport_set_ptr(state->session,
989 (gnutls_transport_ptr_t)
990 (size_t) cnew->iofile);
992 #elif HAVE_OPENSSL_SSL_H
993 state->ctx = st->ctx;
994 state->ctx_alloc = 0;
995 state->ssl = st->ssl;
998 state->ssl = SSL_new(state->ctx);
999 SSL_set_fd(state->ssl, cnew->iofile);
1002 state->connect_request_buf = 0;
1003 state->connect_response_buf = 0;
1006 if (h->state == CS_ST_ACCEPT)
1009 tcpip_state *state = (tcpip_state *)h->cprivate;
1012 int res = gnutls_handshake(state->session);
1015 if (ssl_check_error(h, state, res))
1017 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
1020 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
1024 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
1026 #elif HAVE_OPENSSL_SSL_H
1027 tcpip_state *state = (tcpip_state *)h->cprivate;
1032 res = SSL_accept(state->ssl);
1033 TRC(fprintf(stderr, "SSL_accept res=%d\n", res));
1036 if (ssl_check_error(h, state, res))
1043 TRC(fprintf(stderr, "SSL_accept complete\n"));
1049 h->cerrno = CSOUTSTATE;
1053 h->state = CS_ST_DATAXFER;
1058 #define CS_TCPIP_BUFCHUNK 4096
1061 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1062 * 0=connection closed.
1064 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1066 tcpip_state *sp = (tcpip_state *)h->cprivate;
1068 int tmpi, berlen, rest, req, tomove;
1069 int hasread = 0, res;
1071 TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
1072 if (sp->altlen) /* switch buffers */
1074 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1079 *bufsize = sp->altsize;
1080 hasread = sp->altlen;
1086 while (!(berlen = (*sp->complete)(*buf, hasread)))
1090 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1092 h->cerrno = CSYSERR;
1096 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1097 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1099 h->cerrno = CSYSERR;
1104 /* unfortunatly, sun sometimes forgets to set errno in recv
1105 when EWOULDBLOCK etc. would be required (res = -1) */
1107 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1108 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1111 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1112 strerror(yaz_errno())));
1114 if (WSAGetLastError() == WSAEWOULDBLOCK)
1116 h->io_pending = CS_WANT_READ;
1121 h->cerrno = CSYSERR;
1125 if (yaz_errno() == EWOULDBLOCK
1127 #if EAGAIN != EWOULDBLOCK
1128 || yaz_errno() == EAGAIN
1131 || yaz_errno() == EINPROGRESS
1133 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1137 h->io_pending = CS_WANT_READ;
1140 else if (yaz_errno() == 0)
1144 h->cerrno = CSYSERR;
1152 if (hasread > h->max_recv_bytes)
1154 h->cerrno = CSBUFSIZE;
1158 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1160 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1161 if (hasread > berlen)
1163 tomove = req = hasread - berlen;
1164 rest = tomove % CS_TCPIP_BUFCHUNK;
1166 req += CS_TCPIP_BUFCHUNK - rest;
1169 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1171 h->cerrno = CSYSERR;
1174 } else if (sp->altsize < req)
1175 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1177 h->cerrno = CSYSERR;
1180 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1182 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1184 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1185 *(*buf + berlen) = '\0';
1186 return berlen ? berlen : 1;
1192 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1193 * 0=connection closed.
1195 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1197 tcpip_state *sp = (tcpip_state *)h->cprivate;
1199 int tmpi, berlen, rest, req, tomove;
1200 int hasread = 0, res;
1202 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1203 if (sp->altlen) /* switch buffers */
1205 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1210 *bufsize = sp->altsize;
1211 hasread = sp->altlen;
1217 while (!(berlen = (*sp->complete)(*buf, hasread)))
1221 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1224 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1225 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1228 res = gnutls_record_recv(sp->session, *buf + hasread,
1232 if (ssl_check_error(h, sp, res))
1237 res = SSL_read(sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1238 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1241 if (ssl_check_error(h, sp, res))
1248 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1250 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1251 if (hasread > berlen)
1253 tomove = req = hasread - berlen;
1254 rest = tomove % CS_TCPIP_BUFCHUNK;
1256 req += CS_TCPIP_BUFCHUNK - rest;
1259 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1261 } else if (sp->altsize < req)
1262 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1264 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1266 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1268 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1269 *(*buf + berlen) = '\0';
1270 return berlen ? berlen : 1;
1275 * Returns 1, 0 or -1
1276 * In nonblocking mode, you must call again with same buffer while
1277 * return value is 1.
1279 int tcpip_put(COMSTACK h, char *buf, int size)
1282 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1284 TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
1287 if (state->towrite < 0)
1289 state->towrite = size;
1292 else if (state->towrite != size)
1294 h->cerrno = CSWRONGBUF;
1297 while (state->towrite > state->written)
1300 send(h->iofile, buf + state->written, size -
1311 WSAGetLastError() == WSAEWOULDBLOCK
1313 yaz_errno() == EWOULDBLOCK
1315 #if EAGAIN != EWOULDBLOCK
1316 || yaz_errno() == EAGAIN
1320 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1322 || yaz_errno() == EINPROGRESS
1326 TRC(fprintf(stderr, " Flow control stop\n"));
1327 h->io_pending = CS_WANT_WRITE;
1330 h->cerrno = CSYSERR;
1333 state->written += res;
1334 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1335 res, state->written, size));
1337 state->towrite = state->written = -1;
1338 TRC(fprintf(stderr, " Ok\n"));
1345 * Returns 1, 0 or -1
1346 * In nonblocking mode, you must call again with same buffer while
1347 * return value is 1.
1349 int ssl_put(COMSTACK h, char *buf, int size)
1352 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1354 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1357 if (state->towrite < 0)
1359 state->towrite = size;
1362 else if (state->towrite != size)
1364 h->cerrno = CSWRONGBUF;
1367 while (state->towrite > state->written)
1370 res = gnutls_record_send(state->session, buf + state->written,
1371 size - state->written);
1374 if (ssl_check_error(h, state, res))
1379 res = SSL_write(state->ssl, buf + state->written,
1380 size - state->written);
1383 if (ssl_check_error(h, state, res))
1388 state->written += res;
1389 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1390 res, state->written, size));
1392 state->towrite = state->written = -1;
1393 TRC(fprintf(stderr, " Ok\n"));
1398 int tcpip_close(COMSTACK h)
1400 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1402 TRC(fprintf(stderr, "tcpip_close h=%p pid=%d\n", h, getpid()));
1403 if (h->iofile != -1)
1407 gnutls_bye(sp->session, GNUTLS_SHUT_RDWR);
1408 #elif HAVE_OPENSSL_SSL_H
1411 SSL_shutdown(sp->ssl);
1415 closesocket(h->iofile);
1425 gnutls_deinit(sp->session);
1429 assert(sp->cred_ptr->ref > 0);
1431 if (--(sp->cred_ptr->ref) == 0)
1433 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1434 sp->cred_ptr->xcred, getpid()));
1435 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1436 xfree(sp->cred_ptr);
1440 #elif HAVE_OPENSSL_SSL_H
1443 TRC(fprintf(stderr, "SSL_free\n"));
1448 SSL_CTX_free(sp->ctx_alloc);
1450 #if HAVE_GETADDRINFO
1452 freeaddrinfo(sp->ai);
1454 xfree(sp->connect_request_buf);
1455 xfree(sp->connect_response_buf);
1461 char *tcpip_addrstr(COMSTACK h)
1463 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1464 char *r = 0, *buf = sp->buf;
1466 #if HAVE_GETADDRINFO
1468 struct sockaddr_storage addr;
1469 YAZ_SOCKLEN_T len = sizeof(addr);
1471 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1473 h->cerrno = CSYSERR;
1476 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1478 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1487 struct sockaddr_in addr;
1488 YAZ_SOCKLEN_T len = sizeof(addr);
1489 struct hostent *host;
1491 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1493 h->cerrno = CSYSERR;
1496 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1498 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1499 sizeof(addr.sin_addr),
1501 r = (char*) host->h_name;
1504 r = inet_ntoa(addr.sin_addr);
1507 if (h->protocol == PROTO_HTTP)
1508 sprintf(buf, "http:%s", r);
1510 sprintf(buf, "tcp:%s", r);
1514 if (h->protocol == PROTO_HTTP)
1515 sprintf(buf, "https:%s", r);
1517 sprintf(buf, "ssl:%s", r);
1519 #elif HAVE_OPENSSL_SSL_H
1522 if (h->protocol == PROTO_HTTP)
1523 sprintf(buf, "https:%s", r);
1525 sprintf(buf, "ssl:%s", r);
1531 static int tcpip_set_blocking(COMSTACK p, int flags)
1536 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1537 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1540 flag = fcntl(p->iofile, F_GETFL, 0);
1541 if (flags & CS_FLAGS_BLOCKING)
1542 flag = flag & ~O_NONBLOCK; /* blocking */
1545 flag = flag | O_NONBLOCK; /* non-blocking */
1546 signal(SIGPIPE, SIG_IGN);
1548 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1555 void cs_print_session_info(COMSTACK cs)
1558 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1561 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1563 printf("X509 certificate\n");
1565 #elif HAVE_OPENSSL_SSL_H
1566 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1567 SSL *ssl = (SSL *) sp->ssl;
1570 X509 *server_cert = SSL_get_peer_certificate(ssl);
1576 BIO *bio = BIO_new(BIO_s_mem());
1578 /* get PEM buffer in memory */
1579 PEM_write_bio_X509(bio, server_cert);
1580 pem_len = BIO_get_mem_data(bio, &pem_buf);
1581 fwrite(pem_buf, pem_len, 1, stdout);
1583 /* print all info on screen .. */
1584 X509_print_fp(stdout, server_cert);
1587 X509_free(server_cert);
1593 void *cs_get_ssl(COMSTACK cs)
1595 #if HAVE_OPENSSL_SSL_H
1596 struct tcpip_state *sp;
1597 if (!cs || cs->type != ssl_type)
1599 sp = (struct tcpip_state *) cs->cprivate;
1606 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1609 struct tcpip_state *sp;
1610 if (!cs || cs->type != ssl_type)
1612 sp = (struct tcpip_state *) cs->cprivate;
1613 #if HAVE_OPENSSL_SSL_H
1616 sp->ctx = (SSL_CTX *) ctx;
1624 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1627 struct tcpip_state *sp;
1628 if (!cs || cs->type != ssl_type)
1630 sp = (struct tcpip_state *) cs->cprivate;
1631 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1632 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1639 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1641 #if HAVE_OPENSSL_SSL_H
1642 SSL *ssl = (SSL *) cs_get_ssl(cs);
1645 X509 *server_cert = SSL_get_peer_certificate(ssl);
1648 BIO *bio = BIO_new(BIO_s_mem());
1650 /* get PEM buffer in memory */
1651 PEM_write_bio_X509(bio, server_cert);
1652 *len = BIO_get_mem_data(bio, &pem_buf);
1653 *buf = (char *) xmalloc(*len);
1654 memcpy(*buf, pem_buf, *len);
1663 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1665 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1667 int r = tcpip_put(h, state->connect_request_buf,
1668 state->connect_request_len);
1672 h->f_put = tcpip_put; /* switch to normal tcpip put */
1673 r = tcpip_put(h, buf, size);
1678 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1680 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1683 r = tcpip_get(h, &state->connect_response_buf,
1684 &state->connect_response_len);
1687 /* got the connect response completely */
1688 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1689 h->f_get = tcpip_get;
1690 return tcpip_get(h, buf, bufsize);
1697 * c-file-style: "Stroustrup"
1698 * indent-tabs-mode: nil
1700 * vim: shiftwidth=4 tabstop=8 expandtab