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>
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 /** \brief Creates socket using particular address family (AF_)
423 \param ai getaddrinfo result
424 \param mask family mask
425 \returns socket or -1 if none could be created
428 static int create_socket_family(struct addrinfo *ai, unsigned mask)
430 for (; ai; ai = ai->ai_next)
432 if ((ai->ai_family & mask) == mask)
434 int s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
442 void *tcpip_straddr(COMSTACK h, const char *str)
444 tcpip_state *sp = (tcpip_state *)h->cprivate;
445 const char *port = "210";
446 if (h->protocol == PROTO_HTTP)
452 freeaddrinfo(sp->ai);
453 sp->ai = tcpip_getaddrinfo(str, port);
454 if (sp->ai && h->state == CS_ST_UNBND)
456 /* The getaddrinfo call may return multiple addresses when passive
457 flags are used (AI_PASSIVE). This function picks the IPV6 if a
458 socket can be created for it. Otherwise IPV4 is used.
459 See also bug #2350 */
460 int s = create_socket_family(sp->ai, AF_INET6);
462 s = create_socket_family(sp->ai, AF_INET);
467 if (!tcpip_set_blocking(h, h->flags))
473 void *tcpip_straddr(COMSTACK h, const char *str)
475 tcpip_state *sp = (tcpip_state *)h->cprivate;
477 if (h->protocol == PROTO_HTTP)
482 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
484 if (h->state == CS_ST_UNBND)
487 s = socket(AF_INET, SOCK_STREAM, 0);
492 if (!tcpip_set_blocking(h, h->flags))
499 int tcpip_more(COMSTACK h)
501 tcpip_state *sp = (tcpip_state *)h->cprivate;
503 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
507 * connect(2) will block (sometimes) - nothing we can do short of doing
508 * weird things like spawning subprocesses or threading or some weird junk
511 int tcpip_connect(COMSTACK h, void *address)
514 tcpip_state *sp = (tcpip_state *)h->cprivate;
516 struct sockaddr_in *add = (struct sockaddr_in *) address;
521 YAZ_SOCKLEN_T rbufsize = sizeof(recbuflen);
523 TRC(fprintf(stderr, "tcpip_connect\n"));
525 if (h->state != CS_ST_UNBND)
527 h->cerrno = CSOUTSTATE;
531 if (sp->ai != (struct addrinfo *) address)
533 h->cerrno = CSOUTSTATE;
538 /* On Suns, you must set a bigger Receive Buffer BEFORE a call to connect
539 * This gives the connect a chance to negotiate with the other side
542 if (getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) < 0 )
547 TRC(fprintf( stderr, "Current Size of TCP Receive Buffer= %d\n",
549 recbuflen *= 10; /* lets be optimistic */
550 if (setsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, rbufsize ) < 0 )
555 if (getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) )
560 TRC(fprintf(stderr, "New Size of TCP Receive Buffer = %d\n",
565 r = connect(h->iofile, sp->ai->ai_addr, sp->ai->ai_addrlen);
566 freeaddrinfo(sp->ai);
569 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
574 if (WSAGetLastError() == WSAEWOULDBLOCK)
576 h->event = CS_CONNECT;
577 h->state = CS_ST_CONNECTING;
578 h->io_pending = CS_WANT_WRITE;
582 if (yaz_errno() == EINPROGRESS)
584 h->event = CS_CONNECT;
585 h->state = CS_ST_CONNECTING;
586 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
593 h->event = CS_CONNECT;
594 h->state = CS_ST_CONNECTING;
596 return tcpip_rcvconnect(h);
602 int tcpip_rcvconnect(COMSTACK h)
605 tcpip_state *sp = (tcpip_state *)h->cprivate;
607 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
609 if (h->state == CS_ST_DATAXFER)
611 if (h->state != CS_ST_CONNECTING)
613 h->cerrno = CSOUTSTATE;
617 if (h->type == ssl_type && !sp->session)
620 gnutls_global_init();
622 tcpip_create_cred(h);
624 gnutls_init(&sp->session, GNUTLS_CLIENT);
625 gnutls_set_default_priority(sp->session);
626 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
627 sp->cred_ptr->xcred);
629 gnutls_transport_set_ptr(sp->session, (gnutls_transport_ptr_t) h->iofile);
631 res = gnutls_handshake(sp->session);
634 if (ssl_check_error(h, sp, res))
639 #elif HAVE_OPENSSL_SSL_H
640 if (h->type == ssl_type && !sp->ctx)
643 SSL_load_error_strings();
645 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_client_method());
648 h->cerrno = CSERRORSSL;
658 sp->ssl = SSL_new(sp->ctx);
659 SSL_set_fd(sp->ssl, h->iofile);
661 res = SSL_connect(sp->ssl);
664 if (ssl_check_error(h, sp, res))
671 h->state = CS_ST_DATAXFER;
675 #define CERTF "ztest.pem"
676 #define KEYF "ztest.pem"
678 static void tcpip_setsockopt(int fd)
684 if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&set, sizeof(int)))
686 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt TCP_NODELAY");
688 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char*)&len, sizeof(int)))
690 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt SNDBUF");
692 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char*)&len, sizeof(int)))
694 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt RCVBUF");
699 static int tcpip_bind(COMSTACK h, void *address, int mode)
702 tcpip_state *sp = (tcpip_state *)h->cprivate;
705 struct sockaddr *addr = (struct sockaddr *)address;
714 if (sp->ai != (struct addrinfo *) address)
716 h->cerrno = CSOUTSTATE;
722 if (h->type == ssl_type && !sp->session)
725 gnutls_global_init();
727 tcpip_create_cred(h);
729 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
732 GNUTLS_X509_FMT_PEM);
733 if (res != GNUTLS_E_SUCCESS)
735 h->cerrno = CSERRORSSL;
739 #elif HAVE_OPENSSL_SSL_H
740 if (h->type == ssl_type && !sp->ctx)
743 SSL_load_error_strings();
745 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_server_method());
748 h->cerrno = CSERRORSSL;
757 res = SSL_CTX_use_certificate_file(sp->ctx, sp->cert_fname,
761 ERR_print_errors_fp(stderr);
764 res = SSL_CTX_use_PrivateKey_file(sp->ctx, sp->cert_fname,
768 ERR_print_errors_fp(stderr);
771 res = SSL_CTX_check_private_key(sp->ctx);
774 ERR_print_errors_fp(stderr);
778 TRC(fprintf(stderr, "ssl_bind\n"));
782 TRC(fprintf(stderr, "tcpip_bind\n"));
785 TRC(fprintf(stderr, "tcpip_bind\n"));
788 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
789 &one, sizeof(one)) < 0)
795 tcpip_setsockopt(h->iofile);
797 r = bind(h->iofile, sp->ai->ai_addr, sp->ai->ai_addrlen);
798 freeaddrinfo(sp->ai);
801 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
808 /* Allow a maximum-sized backlog of waiting-to-connect clients */
809 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
814 h->state = CS_ST_IDLE;
815 h->event = CS_LISTEN;
819 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
820 int (*check_ip)(void *cd, const char *a, int len, int t),
823 struct sockaddr_in addr;
824 YAZ_SOCKLEN_T len = sizeof(addr);
826 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
827 if (h->state != CS_ST_IDLE)
829 h->cerrno = CSOUTSTATE;
833 h->newfd = accept(h->iofile, 0, 0);
835 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
841 WSAGetLastError() == WSAEWOULDBLOCK
843 yaz_errno() == EWOULDBLOCK
845 #if EAGAIN != EWOULDBLOCK
846 || yaz_errno() == EAGAIN
851 h->cerrno = CSNODATA;
855 shutdown(h->iofile, SD_RECEIVE);
857 shutdown(h->iofile, SHUT_RD);
859 listen(h->iofile, SOMAXCONN);
864 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
865 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
868 if (check_ip && (*check_ip)(cd, (const char *) &addr,
869 sizeof(addr), AF_INET))
873 closesocket(h->newfd);
880 h->state = CS_ST_INCON;
881 tcpip_setsockopt(h->newfd);
885 COMSTACK tcpip_accept(COMSTACK h)
889 unsigned long tru = 1;
892 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
893 if (h->state == CS_ST_INCON)
895 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
896 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
900 closesocket(h->newfd);
907 memcpy(cnew, h, sizeof(*h));
908 cnew->iofile = h->newfd;
909 cnew->io_pending = 0;
911 if (!(state = (tcpip_state *)
912 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
918 closesocket(h->newfd);
926 if (!tcpip_set_blocking(cnew, cnew->flags))
932 closesocket(h->newfd);
944 state->altsize = state->altlen = 0;
945 state->towrite = state->written = -1;
946 state->complete = st->complete;
950 cnew->state = CS_ST_ACCEPT;
951 h->state = CS_ST_IDLE;
954 state->cred_ptr = st->cred_ptr;
960 (state->cred_ptr->ref)++;
961 gnutls_init(&state->session, GNUTLS_SERVER);
968 res = gnutls_set_default_priority(state->session);
969 if (res != GNUTLS_E_SUCCESS)
975 res = gnutls_credentials_set(state->session,
976 GNUTLS_CRD_CERTIFICATE,
977 st->cred_ptr->xcred);
978 if (res != GNUTLS_E_SUCCESS)
984 gnutls_transport_set_ptr(state->session,
985 (gnutls_transport_ptr_t) cnew->iofile);
987 #elif HAVE_OPENSSL_SSL_H
988 state->ctx = st->ctx;
989 state->ctx_alloc = 0;
990 state->ssl = st->ssl;
993 state->ssl = SSL_new(state->ctx);
994 SSL_set_fd(state->ssl, cnew->iofile);
997 state->connect_request_buf = 0;
998 state->connect_response_buf = 0;
1001 if (h->state == CS_ST_ACCEPT)
1004 tcpip_state *state = (tcpip_state *)h->cprivate;
1007 int res = gnutls_handshake(state->session);
1010 if (ssl_check_error(h, state, res))
1012 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
1015 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
1019 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
1021 #elif HAVE_OPENSSL_SSL_H
1022 tcpip_state *state = (tcpip_state *)h->cprivate;
1027 res = SSL_accept(state->ssl);
1028 TRC(fprintf(stderr, "SSL_accept res=%d\n", res));
1031 if (ssl_check_error(h, state, res))
1038 TRC(fprintf(stderr, "SSL_accept complete\n"));
1044 h->cerrno = CSOUTSTATE;
1048 h->state = CS_ST_DATAXFER;
1053 #define CS_TCPIP_BUFCHUNK 4096
1056 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1057 * 0=connection closed.
1059 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1061 tcpip_state *sp = (tcpip_state *)h->cprivate;
1063 int tmpi, berlen, rest, req, tomove;
1064 int hasread = 0, res;
1066 TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
1067 if (sp->altlen) /* switch buffers */
1069 TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
1070 (unsigned) sp->altbuf));
1074 *bufsize = sp->altsize;
1075 hasread = sp->altlen;
1081 while (!(berlen = (*sp->complete)(*buf, hasread)))
1085 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1087 h->cerrno = CSYSERR;
1091 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1092 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1094 h->cerrno = CSYSERR;
1099 /* unfortunatly, sun sometimes forgets to set errno in recv
1100 when EWOULDBLOCK etc. would be required (res = -1) */
1102 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1103 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1106 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1107 strerror(yaz_errno())));
1109 if (WSAGetLastError() == WSAEWOULDBLOCK)
1111 h->io_pending = CS_WANT_READ;
1116 h->cerrno = CSYSERR;
1120 if (yaz_errno() == EWOULDBLOCK
1122 #if EAGAIN != EWOULDBLOCK
1123 || yaz_errno() == EAGAIN
1126 || yaz_errno() == EINPROGRESS
1128 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1132 h->io_pending = CS_WANT_READ;
1135 else if (yaz_errno() == 0)
1139 h->cerrno = CSYSERR;
1147 if (hasread > h->max_recv_bytes)
1149 h->cerrno = CSBUFSIZE;
1153 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1155 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1156 if (hasread > berlen)
1158 tomove = req = hasread - berlen;
1159 rest = tomove % CS_TCPIP_BUFCHUNK;
1161 req += CS_TCPIP_BUFCHUNK - rest;
1164 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1166 h->cerrno = CSYSERR;
1169 } else if (sp->altsize < req)
1170 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1172 h->cerrno = CSYSERR;
1175 TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
1176 (unsigned) sp->altbuf));
1177 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1179 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1180 *(*buf + berlen) = '\0';
1181 return berlen ? berlen : 1;
1187 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1188 * 0=connection closed.
1190 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1192 tcpip_state *sp = (tcpip_state *)h->cprivate;
1194 int tmpi, berlen, rest, req, tomove;
1195 int hasread = 0, res;
1197 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1198 if (sp->altlen) /* switch buffers */
1200 TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
1201 (unsigned) sp->altbuf));
1205 *bufsize = sp->altsize;
1206 hasread = sp->altlen;
1212 while (!(berlen = (*sp->complete)(*buf, hasread)))
1216 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1219 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1220 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1223 res = gnutls_record_recv(sp->session, *buf + hasread,
1227 if (ssl_check_error(h, sp, res))
1232 res = SSL_read(sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1233 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1236 if (ssl_check_error(h, sp, res))
1243 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1245 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1246 if (hasread > berlen)
1248 tomove = req = hasread - berlen;
1249 rest = tomove % CS_TCPIP_BUFCHUNK;
1251 req += CS_TCPIP_BUFCHUNK - rest;
1254 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1256 } else if (sp->altsize < req)
1257 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1259 TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
1260 (unsigned) sp->altbuf));
1261 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1263 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1264 *(*buf + berlen) = '\0';
1265 return berlen ? berlen : 1;
1270 * Returns 1, 0 or -1
1271 * In nonblocking mode, you must call again with same buffer while
1272 * return value is 1.
1274 int tcpip_put(COMSTACK h, char *buf, int size)
1277 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1279 TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
1282 if (state->towrite < 0)
1284 state->towrite = size;
1287 else if (state->towrite != size)
1289 h->cerrno = CSWRONGBUF;
1292 while (state->towrite > state->written)
1295 send(h->iofile, buf + state->written, size -
1306 WSAGetLastError() == WSAEWOULDBLOCK
1308 yaz_errno() == EWOULDBLOCK
1310 #if EAGAIN != EWOULDBLOCK
1311 || yaz_errno() == EAGAIN
1315 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1317 || yaz_errno() == EINPROGRESS
1321 TRC(fprintf(stderr, " Flow control stop\n"));
1322 h->io_pending = CS_WANT_WRITE;
1325 h->cerrno = CSYSERR;
1328 state->written += res;
1329 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1330 res, state->written, size));
1332 state->towrite = state->written = -1;
1333 TRC(fprintf(stderr, " Ok\n"));
1340 * Returns 1, 0 or -1
1341 * In nonblocking mode, you must call again with same buffer while
1342 * return value is 1.
1344 int ssl_put(COMSTACK h, char *buf, int size)
1347 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1349 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1352 if (state->towrite < 0)
1354 state->towrite = size;
1357 else if (state->towrite != size)
1359 h->cerrno = CSWRONGBUF;
1362 while (state->towrite > state->written)
1365 res = gnutls_record_send(state->session, buf + state->written,
1366 size - state->written);
1369 if (ssl_check_error(h, state, res))
1374 res = SSL_write(state->ssl, buf + state->written,
1375 size - state->written);
1378 if (ssl_check_error(h, state, res))
1383 state->written += res;
1384 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1385 res, state->written, size));
1387 state->towrite = state->written = -1;
1388 TRC(fprintf(stderr, " Ok\n"));
1393 int tcpip_close(COMSTACK h)
1395 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1397 TRC(fprintf(stderr, "tcpip_close h=%p pid=%d\n", h, getpid()));
1398 if (h->iofile != -1)
1402 gnutls_bye(sp->session, GNUTLS_SHUT_RDWR);
1403 #elif HAVE_OPENSSL_SSL_H
1406 SSL_shutdown(sp->ssl);
1410 closesocket(h->iofile);
1420 gnutls_deinit(sp->session);
1424 assert(sp->cred_ptr->ref > 0);
1426 if (--(sp->cred_ptr->ref) == 0)
1428 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1429 sp->cred_ptr->xcred, getpid()));
1430 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1431 xfree(sp->cred_ptr);
1435 #elif HAVE_OPENSSL_SSL_H
1438 TRC(fprintf(stderr, "SSL_free\n"));
1443 SSL_CTX_free(sp->ctx_alloc);
1445 #if HAVE_GETADDRINFO
1447 freeaddrinfo(sp->ai);
1449 xfree(sp->connect_request_buf);
1450 xfree(sp->connect_response_buf);
1456 char *tcpip_addrstr(COMSTACK h)
1458 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1459 char *r = 0, *buf = sp->buf;
1461 #if HAVE_GETADDRINFO
1463 struct sockaddr_storage addr;
1464 YAZ_SOCKLEN_T len = sizeof(addr);
1466 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1468 h->cerrno = CSYSERR;
1471 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1473 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1482 struct sockaddr_in addr;
1483 YAZ_SOCKLEN_T len = sizeof(addr);
1484 struct hostent *host;
1486 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1488 h->cerrno = CSYSERR;
1491 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1493 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1494 sizeof(addr.sin_addr),
1496 r = (char*) host->h_name;
1499 r = inet_ntoa(addr.sin_addr);
1502 if (h->protocol == PROTO_HTTP)
1503 sprintf(buf, "http:%s", r);
1505 sprintf(buf, "tcp:%s", r);
1509 if (h->protocol == PROTO_HTTP)
1510 sprintf(buf, "https:%s", r);
1512 sprintf(buf, "ssl:%s", r);
1514 #elif HAVE_OPENSSL_SSL_H
1517 if (h->protocol == PROTO_HTTP)
1518 sprintf(buf, "https:%s", r);
1520 sprintf(buf, "ssl:%s", r);
1526 static int tcpip_set_blocking(COMSTACK p, int flags)
1531 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1532 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1535 flag = fcntl(p->iofile, F_GETFL, 0);
1536 if (flags & CS_FLAGS_BLOCKING)
1537 flag = flag & ~O_NONBLOCK; /* blocking */
1540 flag = flag | O_NONBLOCK; /* non-blocking */
1541 signal(SIGPIPE, SIG_IGN);
1543 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1550 void cs_print_session_info(COMSTACK cs)
1553 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1556 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1558 printf("X509 certificate\n");
1560 #elif HAVE_OPENSSL_SSL_H
1561 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1562 SSL *ssl = (SSL *) sp->ssl;
1565 X509 *server_cert = SSL_get_peer_certificate(ssl);
1571 BIO *bio = BIO_new(BIO_s_mem());
1573 /* get PEM buffer in memory */
1574 PEM_write_bio_X509(bio, server_cert);
1575 pem_len = BIO_get_mem_data(bio, &pem_buf);
1576 fwrite(pem_buf, pem_len, 1, stdout);
1578 /* print all info on screen .. */
1579 X509_print_fp(stdout, server_cert);
1582 X509_free(server_cert);
1588 void *cs_get_ssl(COMSTACK cs)
1590 #if HAVE_OPENSSL_SSL_H
1591 struct tcpip_state *sp;
1592 if (!cs || cs->type != ssl_type)
1594 sp = (struct tcpip_state *) cs->cprivate;
1601 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1604 struct tcpip_state *sp;
1605 if (!cs || cs->type != ssl_type)
1607 sp = (struct tcpip_state *) cs->cprivate;
1608 #if HAVE_OPENSSL_SSL_H
1611 sp->ctx = (SSL_CTX *) ctx;
1619 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1622 struct tcpip_state *sp;
1623 if (!cs || cs->type != ssl_type)
1625 sp = (struct tcpip_state *) cs->cprivate;
1626 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1627 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1634 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1636 #if HAVE_OPENSSL_SSL_H
1637 SSL *ssl = (SSL *) cs_get_ssl(cs);
1640 X509 *server_cert = SSL_get_peer_certificate(ssl);
1643 BIO *bio = BIO_new(BIO_s_mem());
1645 /* get PEM buffer in memory */
1646 PEM_write_bio_X509(bio, server_cert);
1647 *len = BIO_get_mem_data(bio, &pem_buf);
1648 *buf = (char *) xmalloc(*len);
1649 memcpy(*buf, pem_buf, *len);
1658 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1660 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1662 int r = tcpip_put(h, state->connect_request_buf,
1663 state->connect_request_len);
1667 h->f_put = tcpip_put; /* switch to normal tcpip put */
1668 r = tcpip_put(h, buf, size);
1673 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1675 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1678 r = tcpip_get(h, &state->connect_response_buf,
1679 &state->connect_response_len);
1682 /* got the connect response completely */
1683 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1684 h->f_get = tcpip_get;
1685 return tcpip_get(h, buf, bufsize);
1692 * c-file-style: "Stroustrup"
1693 * indent-tabs-mode: nil
1695 * vim: shiftwidth=4 tabstop=8 expandtab