1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2012 Index Data
3 * See the file LICENSE for details.
7 * \brief Implements TCP/IP + SSL COMSTACK.
21 #include <sys/types.h>
31 /* VS 2003 or later has getaddrinfo; older versions do not */
35 #define HAVE_GETADDRINFO 1
37 #define HAVE_GETADDRINFO 0
42 #include <netinet/in.h>
48 #include <arpa/inet.h>
50 #if HAVE_NETINET_TCP_H
51 #include <netinet/tcp.h>
54 #include <sys/socket.h>
61 #include <gnutls/x509.h>
62 #include <gnutls/gnutls.h>
66 #if HAVE_OPENSSL_SSL_H
67 #include <openssl/ssl.h>
68 #include <openssl/err.h>
72 #include <yaz/comstack.h>
73 #include <yaz/tcpip.h>
74 #include <yaz/errno.h>
76 static void tcpip_close(COMSTACK h);
77 static int tcpip_put(COMSTACK h, char *buf, int size);
78 static int tcpip_get(COMSTACK h, char **buf, int *bufsize);
79 static int tcpip_put_connect(COMSTACK h, char *buf, int size);
80 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize);
81 static int tcpip_connect(COMSTACK h, void *address);
82 static int tcpip_more(COMSTACK h);
83 static int tcpip_rcvconnect(COMSTACK h);
84 static int tcpip_bind(COMSTACK h, void *address, int mode);
85 static int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
86 int (*check_ip)(void *cd, const char *a, int len, int type),
88 static int tcpip_set_blocking(COMSTACK p, int blocking);
91 static int ssl_get(COMSTACK h, char **buf, int *bufsize);
92 static int ssl_put(COMSTACK h, char *buf, int size);
95 static COMSTACK tcpip_accept(COMSTACK h);
96 static const char *tcpip_addrstr(COMSTACK h);
97 static void *tcpip_straddr(COMSTACK h, const char *str);
105 #ifndef YAZ_SOCKLEN_T
106 #define YAZ_SOCKLEN_T int
110 struct tcpip_cred_ptr {
111 gnutls_certificate_credentials_t xcred;
116 /* this state is used for both SSL and straight TCP/IP */
117 typedef struct tcpip_state
119 char *altbuf; /* alternate buffer for surplus data */
120 int altsize; /* size as xmalloced */
121 int altlen; /* length of data or 0 if none */
123 int written; /* -1 if we aren't writing */
124 int towrite; /* to verify against user input */
125 int (*complete)(const char *buf, int len); /* length/complete. */
129 struct sockaddr_in addr; /* returned by cs_straddr */
131 char buf[128]; /* returned by cs_addrstr */
133 struct tcpip_cred_ptr *cred_ptr;
134 gnutls_session_t session;
135 char cert_fname[256];
136 #elif HAVE_OPENSSL_SSL_H
137 SSL_CTX *ctx; /* current CTX. */
138 SSL_CTX *ctx_alloc; /* If =ctx it is owned by CS. If 0 it is not owned */
140 char cert_fname[256];
142 char *connect_request_buf;
143 int connect_request_len;
144 char *connect_response_buf;
145 int connect_response_len;
149 static int tcpip_init(void)
151 static int initialized = 0;
157 requested = MAKEWORD(1, 1);
158 if (WSAStartup(requested, &wd))
165 static int tcpip_init(void)
172 * This function is always called through the cs_create() macro.
173 * s >= 0: socket has already been established for us.
175 COMSTACK tcpip_type(int s, int flags, int protocol, void *vp)
182 if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
184 if (!(sp = (struct tcpip_state *)(p->cprivate =
185 xmalloc(sizeof(tcpip_state)))))
192 p->type = tcpip_type;
193 p->protocol = (enum oid_proto) protocol;
195 p->f_connect = tcpip_connect;
196 p->f_rcvconnect = tcpip_rcvconnect;
197 p->f_get = tcpip_get;
198 p->f_put = tcpip_put;
199 p->f_close = tcpip_close;
200 p->f_more = tcpip_more;
201 p->f_bind = tcpip_bind;
202 p->f_listen = tcpip_listen;
203 p->f_accept = tcpip_accept;
204 p->f_addrstr = tcpip_addrstr;
205 p->f_straddr = tcpip_straddr;
206 p->f_set_blocking = tcpip_set_blocking;
207 p->max_recv_bytes = 128 * 1024 * 1024;
209 p->state = s < 0 ? CS_ST_UNBND : CS_ST_IDLE; /* state of line */
217 strcpy(sp->cert_fname, "yaz.pem");
218 #elif HAVE_OPENSSL_SSL_H
219 sp->ctx = sp->ctx_alloc = 0;
221 strcpy(sp->cert_fname, "yaz.pem");
228 sp->altsize = sp->altlen = 0;
229 sp->towrite = sp->written = -1;
230 if (protocol == PROTO_WAIS)
231 sp->complete = completeWAIS;
233 sp->complete = cs_complete_auto;
235 sp->connect_request_buf = 0;
236 sp->connect_request_len = 0;
237 sp->connect_response_buf = 0;
238 sp->connect_response_len = 0;
240 p->timeout = COMSTACK_DEFAULT_TIMEOUT;
241 TRC(fprintf(stderr, "Created new TCPIP comstack\n"));
246 COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
247 const char *connect_host)
249 COMSTACK p = tcpip_type(s, flags, protocol, 0);
254 tcpip_state *sp = (tcpip_state *) p->cprivate;
255 sp->connect_request_buf = (char *) xmalloc(strlen(connect_host) + 30);
256 sprintf(sp->connect_request_buf, "CONNECT %s HTTP/1.0\r\n\r\n",
258 sp->connect_request_len = strlen(sp->connect_request_buf);
259 p->f_put = tcpip_put_connect;
260 p->f_get = tcpip_get_connect;
261 sp->complete = cs_complete_auto_head; /* only want HTTP header */
267 static void tcpip_create_cred(COMSTACK cs)
269 tcpip_state *sp = (tcpip_state *) cs->cprivate;
270 sp->cred_ptr = (struct tcpip_cred_ptr *) xmalloc(sizeof(*sp->cred_ptr));
271 sp->cred_ptr->ref = 1;
272 gnutls_certificate_allocate_credentials(&sp->cred_ptr->xcred);
277 COMSTACK ssl_type(int s, int flags, int protocol, void *vp)
285 p = tcpip_type(s, flags, protocol, 0);
291 sp = (tcpip_state *) p->cprivate;
294 sp->session = (gnutls_session_t) vp;
295 #elif HAVE_OPENSSL_SSL_H
296 sp->ctx = (SSL_CTX *) vp; /* may be NULL */
298 /* note: we don't handle already opened socket in SSL mode - yet */
304 static int ssl_check_error(COMSTACK h, tcpip_state *sp, int res)
306 #if HAVE_OPENSSL_SSL_H
307 int err = SSL_get_error(sp->ssl, res);
308 TRC(fprintf(stderr, "got err=%d\n", err));
309 if (err == SSL_ERROR_WANT_READ)
311 TRC(fprintf(stderr, " -> SSL_ERROR_WANT_READ\n"));
312 h->io_pending = CS_WANT_READ;
315 if (err == SSL_ERROR_WANT_WRITE)
317 TRC(fprintf(stderr, " -> SSL_ERROR_WANT_WRITE\n"));
318 h->io_pending = CS_WANT_WRITE;
322 TRC(fprintf(stderr, "ssl_check_error error=%d fatal=%d msg=%s\n",
324 gnutls_error_is_fatal(res),
325 gnutls_strerror(res)));
326 if (res == GNUTLS_E_AGAIN || res == GNUTLS_E_INTERRUPTED)
328 int dir = gnutls_record_get_direction(sp->session);
329 TRC(fprintf(stderr, " -> incomplete dir=%d\n", dir));
330 h->io_pending = dir ? CS_WANT_WRITE : CS_WANT_READ;
334 h->cerrno = CSERRORSSL;
340 /* resolve using getaddrinfo */
341 struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port)
343 struct addrinfo hints, *res;
348 hints.ai_family = AF_UNSPEC;
349 hints.ai_socktype = SOCK_STREAM;
350 hints.ai_protocol = 0;
351 hints.ai_addrlen = 0;
352 hints.ai_addr = NULL;
353 hints.ai_canonname = NULL;
354 hints.ai_next = NULL;
356 strncpy(host, str, sizeof(host)-1);
357 host[sizeof(host)-1] = 0;
358 if ((p = strchr(host, '/')))
360 if ((p = strrchr(host, ':')))
366 if (!strcmp("@", host))
368 hints.ai_flags = AI_PASSIVE;
369 hints.ai_family = AF_INET;
370 error = getaddrinfo(0, port, &hints, &res);
372 else if (!strcmp("@6", host))
374 hints.ai_flags = AI_PASSIVE;
375 hints.ai_family = AF_INET6;
376 error = getaddrinfo(0, port, &hints, &res);
380 error = getaddrinfo(host, port, &hints, &res);
388 /* gethostbyname .. old systems */
389 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
394 short int port = default_port;
396 unsigned long tmpadd;
400 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
401 add->sin_family = AF_INET;
402 strncpy(buf, str, sizeof(buf)-1);
403 buf[sizeof(buf)-1] = 0;
404 if ((p = strchr(buf, '/')))
406 if ((p = strrchr(buf, ':')))
411 add->sin_port = htons(port);
412 if (!strcmp("@", buf))
414 add->sin_addr.s_addr = INADDR_ANY;
416 else if ((tmpadd = inet_addr(buf)) != -1)
418 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
420 else if ((hp = gethostbyname(buf)))
422 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
423 sizeof(struct in_addr));
431 void *tcpip_straddr(COMSTACK h, const char *str)
433 tcpip_state *sp = (tcpip_state *)h->cprivate;
434 const char *port = "210";
435 struct addrinfo *ai = 0;
436 if (h->protocol == PROTO_HTTP)
438 if (h->type == ssl_type)
447 freeaddrinfo(sp->ai);
448 sp->ai = tcpip_getaddrinfo(str, port);
449 if (sp->ai && h->state == CS_ST_UNBND)
452 for (ai = sp->ai; ai; ai = ai->ai_next)
454 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)
475 if (h->type == ssl_type)
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 struct addrinfo *ai = (struct addrinfo *) address;
516 tcpip_state *sp = (tcpip_state *)h->cprivate;
518 struct sockaddr_in *add = (struct sockaddr_in *) address;
521 TRC(fprintf(stderr, "tcpip_connect\n"));
523 if (h->state != CS_ST_UNBND)
525 h->cerrno = CSOUTSTATE;
529 r = connect(h->iofile, ai->ai_addr, ai->ai_addrlen);
530 freeaddrinfo(sp->ai);
533 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
538 if (WSAGetLastError() == WSAEWOULDBLOCK)
540 h->event = CS_CONNECT;
541 h->state = CS_ST_CONNECTING;
542 h->io_pending = CS_WANT_WRITE;
546 if (yaz_errno() == EINPROGRESS)
548 h->event = CS_CONNECT;
549 h->state = CS_ST_CONNECTING;
550 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
557 h->event = CS_CONNECT;
558 h->state = CS_ST_CONNECTING;
560 return tcpip_rcvconnect(h);
566 int tcpip_rcvconnect(COMSTACK h)
569 tcpip_state *sp = (tcpip_state *)h->cprivate;
571 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
573 if (h->state == CS_ST_DATAXFER)
575 if (h->state != CS_ST_CONNECTING)
577 h->cerrno = CSOUTSTATE;
581 if (h->type == ssl_type && !sp->session)
583 gnutls_global_init();
584 tcpip_create_cred(h);
585 gnutls_init(&sp->session, GNUTLS_CLIENT);
586 gnutls_set_default_priority(sp->session);
587 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
588 sp->cred_ptr->xcred);
589 /* cast to intermediate size_t to avoid GCC warning. */
590 gnutls_transport_set_ptr(sp->session,
591 (gnutls_transport_ptr_t)
596 int res = gnutls_handshake(sp->session);
599 if (ssl_check_error(h, sp, res))
604 #elif HAVE_OPENSSL_SSL_H
605 if (h->type == ssl_type && !sp->ctx)
608 SSL_load_error_strings();
610 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_client_method());
613 h->cerrno = CSERRORSSL;
623 sp->ssl = SSL_new(sp->ctx);
624 SSL_set_fd(sp->ssl, h->iofile);
626 res = SSL_connect(sp->ssl);
629 if (ssl_check_error(h, sp, res))
636 h->state = CS_ST_DATAXFER;
640 #define CERTF "ztest.pem"
641 #define KEYF "ztest.pem"
643 static int tcpip_bind(COMSTACK h, void *address, int mode)
646 tcpip_state *sp = (tcpip_state *)h->cprivate;
648 struct addrinfo *ai = (struct addrinfo *) address;
650 struct sockaddr *addr = (struct sockaddr *)address;
659 if (h->type == ssl_type && !sp->session)
662 gnutls_global_init();
664 tcpip_create_cred(h);
666 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
669 GNUTLS_X509_FMT_PEM);
670 if (res != GNUTLS_E_SUCCESS)
672 h->cerrno = CSERRORSSL;
676 #elif HAVE_OPENSSL_SSL_H
677 if (h->type == ssl_type && !sp->ctx)
680 SSL_load_error_strings();
682 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_server_method());
685 h->cerrno = CSERRORSSL;
694 res = SSL_CTX_use_certificate_file(sp->ctx, sp->cert_fname,
698 ERR_print_errors_fp(stderr);
701 res = SSL_CTX_use_PrivateKey_file(sp->ctx, sp->cert_fname,
705 ERR_print_errors_fp(stderr);
708 res = SSL_CTX_check_private_key(sp->ctx);
711 ERR_print_errors_fp(stderr);
715 TRC(fprintf(stderr, "ssl_bind\n"));
719 TRC(fprintf(stderr, "tcpip_bind\n"));
722 TRC(fprintf(stderr, "tcpip_bind\n"));
725 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
726 &one, sizeof(one)) < 0)
733 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
734 freeaddrinfo(sp->ai);
737 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
744 /* Allow a maximum-sized backlog of waiting-to-connect clients */
745 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
750 h->state = CS_ST_IDLE;
751 h->event = CS_LISTEN;
755 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
756 int (*check_ip)(void *cd, const char *a, int len, int t),
760 /* we don't get peer address on Windows (via accept) */
762 struct sockaddr_in addr;
763 YAZ_SOCKLEN_T len = sizeof(addr);
766 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
767 if (h->state != CS_ST_IDLE)
769 h->cerrno = CSOUTSTATE;
773 h->newfd = accept(h->iofile, 0, 0);
775 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
781 WSAGetLastError() == WSAEWOULDBLOCK
783 yaz_errno() == EWOULDBLOCK
785 #if EAGAIN != EWOULDBLOCK
786 || yaz_errno() == EAGAIN
791 h->cerrno = CSNODATA;
795 shutdown(h->iofile, SD_RECEIVE);
797 shutdown(h->iofile, SHUT_RD);
799 listen(h->iofile, SOMAXCONN);
808 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
809 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
812 if (check_ip && (*check_ip)(cd, (const char *) &addr,
813 sizeof(addr), AF_INET))
817 closesocket(h->newfd);
825 h->state = CS_ST_INCON;
829 COMSTACK tcpip_accept(COMSTACK h)
833 unsigned long tru = 1;
836 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
837 if (h->state == CS_ST_INCON)
839 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
840 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
844 closesocket(h->newfd);
851 memcpy(cnew, h, sizeof(*h));
852 cnew->iofile = h->newfd;
853 cnew->io_pending = 0;
855 if (!(state = (tcpip_state *)
856 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
862 closesocket(h->newfd);
870 if (!tcpip_set_blocking(cnew, cnew->flags))
876 closesocket(h->newfd);
888 state->altsize = state->altlen = 0;
889 state->towrite = state->written = -1;
890 state->complete = st->complete;
894 cnew->state = CS_ST_ACCEPT;
895 h->state = CS_ST_IDLE;
898 state->cred_ptr = st->cred_ptr;
904 (state->cred_ptr->ref)++;
905 gnutls_init(&state->session, GNUTLS_SERVER);
912 res = gnutls_set_default_priority(state->session);
913 if (res != GNUTLS_E_SUCCESS)
919 res = gnutls_credentials_set(state->session,
920 GNUTLS_CRD_CERTIFICATE,
921 st->cred_ptr->xcred);
922 if (res != GNUTLS_E_SUCCESS)
928 /* cast to intermediate size_t to avoid GCC warning. */
929 gnutls_transport_set_ptr(state->session,
930 (gnutls_transport_ptr_t)
931 (size_t) cnew->iofile);
933 #elif HAVE_OPENSSL_SSL_H
934 state->ctx = st->ctx;
935 state->ctx_alloc = 0;
936 state->ssl = st->ssl;
939 state->ssl = SSL_new(state->ctx);
940 SSL_set_fd(state->ssl, cnew->iofile);
943 state->connect_request_buf = 0;
944 state->connect_response_buf = 0;
947 if (h->state == CS_ST_ACCEPT)
950 tcpip_state *state = (tcpip_state *)h->cprivate;
953 int res = gnutls_handshake(state->session);
956 if (ssl_check_error(h, state, res))
958 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
961 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
965 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
967 #elif HAVE_OPENSSL_SSL_H
968 tcpip_state *state = (tcpip_state *)h->cprivate;
973 res = SSL_accept(state->ssl);
974 TRC(fprintf(stderr, "SSL_accept res=%d\n", res));
977 if (ssl_check_error(h, state, res))
984 TRC(fprintf(stderr, "SSL_accept complete\n"));
990 h->cerrno = CSOUTSTATE;
994 h->state = CS_ST_DATAXFER;
999 #define CS_TCPIP_BUFCHUNK 4096
1002 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1003 * 0=connection closed.
1005 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1007 tcpip_state *sp = (tcpip_state *)h->cprivate;
1009 int tmpi, berlen, rest, req, tomove;
1010 int hasread = 0, res;
1012 TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
1013 if (sp->altlen) /* switch buffers */
1015 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1020 *bufsize = sp->altsize;
1021 hasread = sp->altlen;
1027 while (!(berlen = (*sp->complete)(*buf, hasread)))
1031 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1033 h->cerrno = CSYSERR;
1037 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1038 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1040 h->cerrno = CSYSERR;
1045 /* unfortunatly, sun sometimes forgets to set errno in recv
1046 when EWOULDBLOCK etc. would be required (res = -1) */
1048 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1049 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1052 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1053 strerror(yaz_errno())));
1055 if (WSAGetLastError() == WSAEWOULDBLOCK)
1057 h->io_pending = CS_WANT_READ;
1062 h->cerrno = CSYSERR;
1066 if (yaz_errno() == EWOULDBLOCK
1068 #if EAGAIN != EWOULDBLOCK
1069 || yaz_errno() == EAGAIN
1072 || yaz_errno() == EINPROGRESS
1074 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1078 h->io_pending = CS_WANT_READ;
1081 else if (yaz_errno() == 0)
1085 h->cerrno = CSYSERR;
1093 if (hasread > h->max_recv_bytes)
1095 h->cerrno = CSBUFSIZE;
1099 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1101 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1102 if (hasread > berlen)
1104 tomove = req = hasread - berlen;
1105 rest = tomove % CS_TCPIP_BUFCHUNK;
1107 req += CS_TCPIP_BUFCHUNK - rest;
1110 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1112 h->cerrno = CSYSERR;
1115 } else if (sp->altsize < req)
1116 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1118 h->cerrno = CSYSERR;
1121 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1123 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1125 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1126 *(*buf + berlen) = '\0';
1127 return berlen ? berlen : 1;
1133 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1134 * 0=connection closed.
1136 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1138 tcpip_state *sp = (tcpip_state *)h->cprivate;
1140 int tmpi, berlen, rest, req, tomove;
1141 int hasread = 0, res;
1143 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1144 if (sp->altlen) /* switch buffers */
1146 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1151 *bufsize = sp->altsize;
1152 hasread = sp->altlen;
1158 while (!(berlen = (*sp->complete)(*buf, hasread)))
1162 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1165 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1166 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1169 res = gnutls_record_recv(sp->session, *buf + hasread,
1173 TRC(fprintf(stderr, "gnutls_record_recv returned 0\n"));
1178 if (ssl_check_error(h, sp, res))
1183 res = SSL_read(sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1184 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1187 if (ssl_check_error(h, sp, res))
1194 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1196 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1197 if (hasread > berlen)
1199 tomove = req = hasread - berlen;
1200 rest = tomove % CS_TCPIP_BUFCHUNK;
1202 req += CS_TCPIP_BUFCHUNK - rest;
1205 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1207 } else if (sp->altsize < req)
1208 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1210 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1212 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1214 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1215 *(*buf + berlen) = '\0';
1216 return berlen ? berlen : 1;
1221 * Returns 1, 0 or -1
1222 * In nonblocking mode, you must call again with same buffer while
1223 * return value is 1.
1225 int tcpip_put(COMSTACK h, char *buf, int size)
1228 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1230 TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
1233 if (state->towrite < 0)
1235 state->towrite = size;
1238 else if (state->towrite != size)
1240 h->cerrno = CSWRONGBUF;
1243 while (state->towrite > state->written)
1246 send(h->iofile, buf + state->written, size -
1257 WSAGetLastError() == WSAEWOULDBLOCK
1259 yaz_errno() == EWOULDBLOCK
1261 #if EAGAIN != EWOULDBLOCK
1262 || yaz_errno() == EAGAIN
1266 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1268 || yaz_errno() == EINPROGRESS
1272 TRC(fprintf(stderr, " Flow control stop\n"));
1273 h->io_pending = CS_WANT_WRITE;
1276 h->cerrno = CSYSERR;
1279 state->written += res;
1280 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1281 res, state->written, size));
1283 state->towrite = state->written = -1;
1284 TRC(fprintf(stderr, " Ok\n"));
1291 * Returns 1, 0 or -1
1292 * In nonblocking mode, you must call again with same buffer while
1293 * return value is 1.
1295 int ssl_put(COMSTACK h, char *buf, int size)
1298 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1300 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1303 if (state->towrite < 0)
1305 state->towrite = size;
1308 else if (state->towrite != size)
1310 h->cerrno = CSWRONGBUF;
1313 while (state->towrite > state->written)
1316 res = gnutls_record_send(state->session, buf + state->written,
1317 size - state->written);
1320 if (ssl_check_error(h, state, res))
1325 res = SSL_write(state->ssl, buf + state->written,
1326 size - state->written);
1329 if (ssl_check_error(h, state, res))
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"));
1344 void tcpip_close(COMSTACK h)
1346 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1348 TRC(fprintf(stderr, "tcpip_close h=%p pid=%d\n", h, getpid()));
1349 if (h->iofile != -1)
1353 gnutls_bye(sp->session, GNUTLS_SHUT_RDWR);
1354 #elif HAVE_OPENSSL_SSL_H
1357 SSL_shutdown(sp->ssl);
1361 closesocket(h->iofile);
1371 gnutls_deinit(sp->session);
1375 assert(sp->cred_ptr->ref > 0);
1377 if (--(sp->cred_ptr->ref) == 0)
1379 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1380 sp->cred_ptr->xcred, getpid()));
1381 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1382 xfree(sp->cred_ptr);
1386 #elif HAVE_OPENSSL_SSL_H
1389 TRC(fprintf(stderr, "SSL_free\n"));
1394 SSL_CTX_free(sp->ctx_alloc);
1396 #if HAVE_GETADDRINFO
1398 freeaddrinfo(sp->ai);
1400 xfree(sp->connect_request_buf);
1401 xfree(sp->connect_response_buf);
1406 const char *tcpip_addrstr(COMSTACK h)
1408 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1409 char *r = 0, *buf = sp->buf;
1411 #if HAVE_GETADDRINFO
1413 struct sockaddr_storage addr;
1414 YAZ_SOCKLEN_T len = sizeof(addr);
1416 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1418 h->cerrno = CSYSERR;
1421 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1423 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1432 struct sockaddr_in addr;
1433 YAZ_SOCKLEN_T len = sizeof(addr);
1434 struct hostent *host;
1436 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1438 h->cerrno = CSYSERR;
1441 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1443 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1444 sizeof(addr.sin_addr),
1446 r = (char*) host->h_name;
1449 r = inet_ntoa(addr.sin_addr);
1452 if (h->protocol == PROTO_HTTP)
1453 sprintf(buf, "http:%s", r);
1455 sprintf(buf, "tcp:%s", r);
1459 if (h->protocol == PROTO_HTTP)
1460 sprintf(buf, "https:%s", r);
1462 sprintf(buf, "ssl:%s", r);
1464 #elif HAVE_OPENSSL_SSL_H
1467 if (h->protocol == PROTO_HTTP)
1468 sprintf(buf, "https:%s", r);
1470 sprintf(buf, "ssl:%s", r);
1476 static int tcpip_set_blocking(COMSTACK p, int flags)
1481 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1482 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1485 flag = fcntl(p->iofile, F_GETFL, 0);
1486 if (flags & CS_FLAGS_BLOCKING)
1487 flag = flag & ~O_NONBLOCK; /* blocking */
1490 flag = flag | O_NONBLOCK; /* non-blocking */
1491 signal(SIGPIPE, SIG_IGN);
1493 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1502 /* gnutls_x509_crt_print appeared in 1.7.6. Memory leaks were fixed in 1.7.9.
1503 GNUTLS_CRT_PRINT_FULL appeared in 2.4.0. */
1504 #if GNUTLS_VERSION_NUMBER >= 0x020400
1505 #define USE_GNUTLS_X509_CRT_PRINT 1
1507 #define USE_GNUTLS_X509_CRT_PRINT 0
1511 #if USE_GNUTLS_X509_CRT_PRINT
1513 static const char *bin2hex(const void *bin, size_t bin_size)
1515 static char printable[110];
1516 const unsigned char *_bin = bin;
1522 for (i = 0; i < bin_size; i++)
1524 sprintf(print, "%.2x ", _bin[i]);
1530 static void x509_crt_print(gnutls_x509_crt_t cert)
1532 time_t expiration_time, activation_time;
1536 unsigned int algo, bits;
1538 expiration_time = gnutls_x509_crt_get_expiration_time(cert);
1539 activation_time = gnutls_x509_crt_get_activation_time(cert);
1541 printf("\tCertificate is valid since: %s", ctime(&activation_time));
1542 printf("\tCertificate expires: %s", ctime(&expiration_time));
1544 /* Print the serial number of the certificate. */
1545 size = sizeof(serial);
1546 gnutls_x509_crt_get_serial(cert, serial, &size);
1548 printf("\tCertificate serial number: %s\n", bin2hex(serial, size));
1550 /* Extract some of the public key algorithm's parameters
1552 algo = gnutls_x509_crt_get_pk_algorithm(cert, &bits);
1554 printf("Certificate public key: %s", gnutls_pk_algorithm_get_name(algo));
1556 /* Print the version of the X.509 certificate. */
1557 printf("\tCertificate version: #%d\n", gnutls_x509_crt_get_version(cert));
1560 gnutls_x509_crt_get_dn(cert, dn, &size);
1561 printf("\tDN: %s\n", dn);
1564 gnutls_x509_crt_get_issuer_dn(cert, dn, &size);
1565 printf("\tIssuer's DN: %s\n", dn);
1570 void cs_print_session_info(COMSTACK cs)
1573 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1574 if (cs->type == ssl_type && sp->session)
1576 const gnutls_datum_t *cert_list;
1577 unsigned i, cert_list_size;
1578 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1580 printf("X509 certificate\n");
1581 cert_list = gnutls_certificate_get_peers(sp->session,
1583 printf("Peer provided %u certificates\n", cert_list_size);
1584 for (i = 0; i < cert_list_size; i++)
1586 gnutls_x509_crt_t cert;
1587 #if USE_GNUTLS_X509_CRT_PRINT
1589 gnutls_datum_t cinfo;
1591 gnutls_x509_crt_init(&cert);
1592 gnutls_x509_crt_import(cert, &cert_list[i], GNUTLS_X509_FMT_DER);
1593 printf("Certificate info %d:\n", i + 1);
1594 #if USE_GNUTLS_X509_CRT_PRINT
1595 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL,
1599 printf("\t%s\n", cinfo.data);
1600 gnutls_free(cinfo.data);
1603 x509_crt_print(cert);
1605 gnutls_x509_crt_deinit(cert);
1609 #elif HAVE_OPENSSL_SSL_H
1610 if (cs->type == ssl_type)
1612 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1613 SSL *ssl = (SSL *) sp->ssl;
1616 X509 *server_cert = SSL_get_peer_certificate(ssl);
1621 BIO *bio = BIO_new(BIO_s_mem());
1623 /* get PEM buffer in memory */
1624 PEM_write_bio_X509(bio, server_cert);
1625 pem_len = BIO_get_mem_data(bio, &pem_buf);
1626 fwrite(pem_buf, pem_len, 1, stdout);
1628 /* print all info on screen .. */
1629 X509_print_fp(stdout, server_cert);
1632 X509_free(server_cert);
1639 void *cs_get_ssl(COMSTACK cs)
1641 #if HAVE_OPENSSL_SSL_H
1642 if (cs && cs->type == ssl_type)
1644 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1651 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1654 if (cs && cs->type == ssl_type)
1656 #if HAVE_OPENSSL_SSL_H
1657 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1660 sp->ctx = (SSL_CTX *) ctx;
1668 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1671 if (cs && cs->type == ssl_type)
1673 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1674 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1675 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1682 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1684 #if HAVE_OPENSSL_SSL_H
1685 SSL *ssl = (SSL *) cs_get_ssl(cs);
1688 X509 *server_cert = SSL_get_peer_certificate(ssl);
1691 BIO *bio = BIO_new(BIO_s_mem());
1693 /* get PEM buffer in memory */
1694 PEM_write_bio_X509(bio, server_cert);
1695 *len = BIO_get_mem_data(bio, &pem_buf);
1696 *buf = (char *) xmalloc(*len);
1697 memcpy(*buf, pem_buf, *len);
1706 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1708 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1710 int r = tcpip_put(h, state->connect_request_buf,
1711 state->connect_request_len);
1715 h->f_put = tcpip_put; /* switch to normal tcpip put */
1716 r = tcpip_put(h, buf, size);
1721 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1723 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1726 r = tcpip_get(h, &state->connect_response_buf,
1727 &state->connect_response_len);
1730 /* got the connect response completely */
1731 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1732 h->f_get = tcpip_get;
1733 return tcpip_get(h, buf, bufsize);
1740 * c-file-style: "Stroustrup"
1741 * indent-tabs-mode: nil
1743 * vim: shiftwidth=4 tabstop=8 expandtab