1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2013 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 h=%p\n", p));
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,
344 struct addrinfo hints, *res;
349 hints.ai_family = AF_UNSPEC;
350 hints.ai_socktype = SOCK_STREAM;
351 hints.ai_protocol = 0;
352 hints.ai_addrlen = 0;
353 hints.ai_addr = NULL;
354 hints.ai_canonname = NULL;
355 hints.ai_next = NULL;
357 strncpy(host, str, sizeof(host)-1);
358 host[sizeof(host)-1] = 0;
359 if ((p = strchr(host, '/')))
361 if ((p = strrchr(host, ':')))
367 if (!strcmp("@", host))
369 hints.ai_flags = AI_PASSIVE;
370 hints.ai_family = AF_INET6;
371 error = getaddrinfo(0, port, &hints, &res);
374 else if (!strcmp("@4", host))
376 hints.ai_flags = AI_PASSIVE;
377 hints.ai_family = AF_INET;
378 error = getaddrinfo(0, port, &hints, &res);
381 else if (!strcmp("@6", host))
383 hints.ai_flags = AI_PASSIVE;
384 hints.ai_family = AF_INET6;
385 error = getaddrinfo(0, port, &hints, &res);
390 error = getaddrinfo(host, port, &hints, &res);
399 /* gethostbyname .. old systems */
400 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
405 short int port = default_port;
407 unsigned long tmpadd;
411 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
412 add->sin_family = AF_INET;
413 strncpy(buf, str, sizeof(buf)-1);
414 buf[sizeof(buf)-1] = 0;
415 if ((p = strchr(buf, '/')))
417 if ((p = strrchr(buf, ':')))
422 add->sin_port = htons(port);
423 if (!strcmp("@", buf))
425 add->sin_addr.s_addr = INADDR_ANY;
427 else if ((tmpadd = inet_addr(buf)) != -1)
429 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
431 else if ((hp = gethostbyname(buf)))
433 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
434 sizeof(struct in_addr));
442 void *tcpip_straddr(COMSTACK h, const char *str)
444 tcpip_state *sp = (tcpip_state *)h->cprivate;
445 const char *port = "210";
446 struct addrinfo *ai = 0;
448 if (h->protocol == PROTO_HTTP)
450 if (h->type == ssl_type)
459 freeaddrinfo(sp->ai);
460 sp->ai = tcpip_getaddrinfo(str, port, &ipv6_only);
461 if (sp->ai && h->state == CS_ST_UNBND)
464 for (ai = sp->ai; ai; ai = ai->ai_next)
466 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
474 if (ipv6_only >= 0 &&
475 setsockopt(h->iofile,
477 IPV6_V6ONLY, &ipv6_only, sizeof(ipv6_only)))
479 if (!tcpip_set_blocking(h, h->flags))
485 void *tcpip_straddr(COMSTACK h, const char *str)
487 tcpip_state *sp = (tcpip_state *)h->cprivate;
489 if (h->protocol == PROTO_HTTP)
491 if (h->type == ssl_type)
499 if (!tcpip_strtoaddr_ex(str, &sp->addr, port))
501 if (h->state == CS_ST_UNBND)
504 s = socket(AF_INET, SOCK_STREAM, 0);
509 if (!tcpip_set_blocking(h, h->flags))
516 int tcpip_more(COMSTACK h)
518 tcpip_state *sp = (tcpip_state *)h->cprivate;
520 return sp->altlen && (*sp->complete)(sp->altbuf, sp->altlen);
524 * connect(2) will block (sometimes) - nothing we can do short of doing
525 * weird things like spawning subprocesses or threading or some weird junk
528 int tcpip_connect(COMSTACK h, void *address)
531 struct addrinfo *ai = (struct addrinfo *) address;
532 tcpip_state *sp = (tcpip_state *)h->cprivate;
534 struct sockaddr_in *add = (struct sockaddr_in *) address;
537 TRC(fprintf(stderr, "tcpip_connect h=%p\n", h));
539 if (h->state != CS_ST_UNBND)
541 h->cerrno = CSOUTSTATE;
545 r = connect(h->iofile, ai->ai_addr, ai->ai_addrlen);
546 freeaddrinfo(sp->ai);
549 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
554 if (WSAGetLastError() == WSAEWOULDBLOCK)
556 h->event = CS_CONNECT;
557 h->state = CS_ST_CONNECTING;
558 h->io_pending = CS_WANT_WRITE;
562 if (yaz_errno() == EINPROGRESS)
564 h->event = CS_CONNECT;
565 h->state = CS_ST_CONNECTING;
566 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
573 h->event = CS_CONNECT;
574 h->state = CS_ST_CONNECTING;
576 return tcpip_rcvconnect(h);
582 int tcpip_rcvconnect(COMSTACK h)
585 tcpip_state *sp = (tcpip_state *)h->cprivate;
587 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
589 if (h->state == CS_ST_DATAXFER)
591 if (h->state != CS_ST_CONNECTING)
593 h->cerrno = CSOUTSTATE;
597 if (h->type == ssl_type && !sp->session)
599 gnutls_global_init();
600 tcpip_create_cred(h);
601 gnutls_init(&sp->session, GNUTLS_CLIENT);
602 gnutls_set_default_priority(sp->session);
603 gnutls_credentials_set (sp->session, GNUTLS_CRD_CERTIFICATE,
604 sp->cred_ptr->xcred);
605 /* cast to intermediate size_t to avoid GCC warning. */
606 gnutls_transport_set_ptr(sp->session,
607 (gnutls_transport_ptr_t)
612 int res = gnutls_handshake(sp->session);
615 if (ssl_check_error(h, sp, res))
620 #elif HAVE_OPENSSL_SSL_H
621 if (h->type == ssl_type && !sp->ctx)
624 SSL_load_error_strings();
626 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_client_method());
629 h->cerrno = CSERRORSSL;
639 sp->ssl = SSL_new(sp->ctx);
640 SSL_set_fd(sp->ssl, h->iofile);
642 res = SSL_connect(sp->ssl);
645 if (ssl_check_error(h, sp, res))
652 h->state = CS_ST_DATAXFER;
656 #define CERTF "ztest.pem"
657 #define KEYF "ztest.pem"
659 static int tcpip_bind(COMSTACK h, void *address, int mode)
662 tcpip_state *sp = (tcpip_state *)h->cprivate;
664 struct addrinfo *ai = (struct addrinfo *) address;
666 struct sockaddr *addr = (struct sockaddr *)address;
675 if (h->type == ssl_type && !sp->session)
678 gnutls_global_init();
680 tcpip_create_cred(h);
682 res = gnutls_certificate_set_x509_key_file(sp->cred_ptr->xcred,
685 GNUTLS_X509_FMT_PEM);
686 if (res != GNUTLS_E_SUCCESS)
688 h->cerrno = CSERRORSSL;
692 #elif HAVE_OPENSSL_SSL_H
693 if (h->type == ssl_type && !sp->ctx)
696 SSL_load_error_strings();
698 sp->ctx = sp->ctx_alloc = SSL_CTX_new(SSLv23_server_method());
701 h->cerrno = CSERRORSSL;
710 res = SSL_CTX_use_certificate_file(sp->ctx, sp->cert_fname,
714 ERR_print_errors_fp(stderr);
717 res = SSL_CTX_use_PrivateKey_file(sp->ctx, sp->cert_fname,
721 ERR_print_errors_fp(stderr);
724 res = SSL_CTX_check_private_key(sp->ctx);
727 ERR_print_errors_fp(stderr);
731 TRC(fprintf(stderr, "ssl_bind\n"));
735 TRC(fprintf(stderr, "tcpip_bind\n"));
738 TRC(fprintf(stderr, "tcpip_bind\n"));
741 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
742 &one, sizeof(one)) < 0)
749 r = bind(h->iofile, ai->ai_addr, ai->ai_addrlen);
750 freeaddrinfo(sp->ai);
753 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
760 /* Allow a maximum-sized backlog of waiting-to-connect clients */
761 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
766 h->state = CS_ST_IDLE;
767 h->event = CS_LISTEN;
771 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
772 int (*check_ip)(void *cd, const char *a, int len, int t),
776 /* we don't get peer address on Windows (via accept) */
778 struct sockaddr_in addr;
779 YAZ_SOCKLEN_T len = sizeof(addr);
782 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
783 if (h->state != CS_ST_IDLE)
785 h->cerrno = CSOUTSTATE;
789 h->newfd = accept(h->iofile, 0, 0);
791 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
797 WSAGetLastError() == WSAEWOULDBLOCK
799 yaz_errno() == EWOULDBLOCK
801 #if EAGAIN != EWOULDBLOCK
802 || yaz_errno() == EAGAIN
807 h->cerrno = CSNODATA;
811 shutdown(h->iofile, SD_RECEIVE);
813 shutdown(h->iofile, SHUT_RD);
815 listen(h->iofile, SOMAXCONN);
824 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
825 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
828 if (check_ip && (*check_ip)(cd, (const char *) &addr,
829 sizeof(addr), AF_INET))
833 closesocket(h->newfd);
841 h->state = CS_ST_INCON;
845 COMSTACK tcpip_accept(COMSTACK h)
849 unsigned long tru = 1;
852 TRC(fprintf(stderr, "tcpip_accept h=%p pid=%d\n", h, getpid()));
853 if (h->state == CS_ST_INCON)
855 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
856 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
860 closesocket(h->newfd);
867 memcpy(cnew, h, sizeof(*h));
868 cnew->iofile = h->newfd;
869 cnew->io_pending = 0;
871 if (!(state = (tcpip_state *)
872 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
878 closesocket(h->newfd);
886 if (!tcpip_set_blocking(cnew, cnew->flags))
892 closesocket(h->newfd);
904 state->altsize = state->altlen = 0;
905 state->towrite = state->written = -1;
906 state->complete = st->complete;
910 cnew->state = CS_ST_ACCEPT;
911 h->state = CS_ST_IDLE;
914 state->cred_ptr = st->cred_ptr;
920 (state->cred_ptr->ref)++;
921 gnutls_init(&state->session, GNUTLS_SERVER);
928 res = gnutls_set_default_priority(state->session);
929 if (res != GNUTLS_E_SUCCESS)
935 res = gnutls_credentials_set(state->session,
936 GNUTLS_CRD_CERTIFICATE,
937 st->cred_ptr->xcred);
938 if (res != GNUTLS_E_SUCCESS)
944 /* cast to intermediate size_t to avoid GCC warning. */
945 gnutls_transport_set_ptr(state->session,
946 (gnutls_transport_ptr_t)
947 (size_t) cnew->iofile);
949 #elif HAVE_OPENSSL_SSL_H
950 state->ctx = st->ctx;
951 state->ctx_alloc = 0;
952 state->ssl = st->ssl;
955 state->ssl = SSL_new(state->ctx);
956 SSL_set_fd(state->ssl, cnew->iofile);
959 state->connect_request_buf = 0;
960 state->connect_response_buf = 0;
963 if (h->state == CS_ST_ACCEPT)
966 tcpip_state *state = (tcpip_state *)h->cprivate;
969 int res = gnutls_handshake(state->session);
972 if (ssl_check_error(h, state, res))
974 TRC(fprintf(stderr, "gnutls_handshake int in tcpip_accept\n"));
977 TRC(fprintf(stderr, "gnutls_handshake failed in tcpip_accept\n"));
981 TRC(fprintf(stderr, "SSL_accept complete. gnutls\n"));
983 #elif HAVE_OPENSSL_SSL_H
984 tcpip_state *state = (tcpip_state *)h->cprivate;
989 res = SSL_accept(state->ssl);
990 TRC(fprintf(stderr, "SSL_accept res=%d\n", res));
993 if (ssl_check_error(h, state, res))
1000 TRC(fprintf(stderr, "SSL_accept complete\n"));
1006 h->cerrno = CSOUTSTATE;
1010 h->state = CS_ST_DATAXFER;
1015 #define CS_TCPIP_BUFCHUNK 4096
1018 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1019 * 0=connection closed.
1021 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
1023 tcpip_state *sp = (tcpip_state *)h->cprivate;
1025 int tmpi, berlen, rest, req, tomove;
1026 int hasread = 0, res;
1028 TRC(fprintf(stderr, "tcpip_get: h=%p bufsize=%d\n", h, *bufsize));
1029 if (sp->altlen) /* switch buffers */
1031 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1036 *bufsize = sp->altsize;
1037 hasread = sp->altlen;
1043 while (!(berlen = (*sp->complete)(*buf, hasread)))
1047 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1049 h->cerrno = CSYSERR;
1053 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1054 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1056 h->cerrno = CSYSERR;
1061 /* unfortunatly, sun sometimes forgets to set errno in recv
1062 when EWOULDBLOCK etc. would be required (res = -1) */
1064 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
1065 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
1068 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
1069 strerror(yaz_errno())));
1071 if (WSAGetLastError() == WSAEWOULDBLOCK)
1073 h->io_pending = CS_WANT_READ;
1078 h->cerrno = CSYSERR;
1082 if (yaz_errno() == EWOULDBLOCK
1084 #if EAGAIN != EWOULDBLOCK
1085 || yaz_errno() == EAGAIN
1088 || yaz_errno() == EINPROGRESS
1090 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
1094 h->io_pending = CS_WANT_READ;
1097 else if (yaz_errno() == 0)
1101 h->cerrno = CSYSERR;
1109 if (hasread > h->max_recv_bytes)
1111 h->cerrno = CSBUFSIZE;
1115 TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1117 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1118 if (hasread > berlen)
1120 tomove = req = hasread - berlen;
1121 rest = tomove % CS_TCPIP_BUFCHUNK;
1123 req += CS_TCPIP_BUFCHUNK - rest;
1126 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1128 h->cerrno = CSYSERR;
1131 } else if (sp->altsize < req)
1132 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1134 h->cerrno = CSYSERR;
1137 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1139 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1141 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1142 *(*buf + berlen) = '\0';
1143 return berlen ? berlen : 1;
1149 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1150 * 0=connection closed.
1152 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1154 tcpip_state *sp = (tcpip_state *)h->cprivate;
1156 int tmpi, berlen, rest, req, tomove;
1157 int hasread = 0, res;
1159 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1160 if (sp->altlen) /* switch buffers */
1162 TRC(fprintf(stderr, " %d bytes in altbuf (%p)\n", sp->altlen,
1167 *bufsize = sp->altsize;
1168 hasread = sp->altlen;
1174 while (!(berlen = (*sp->complete)(*buf, hasread)))
1178 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1181 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1182 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1185 res = gnutls_record_recv(sp->session, *buf + hasread,
1189 TRC(fprintf(stderr, "gnutls_record_recv returned 0\n"));
1194 if (ssl_check_error(h, sp, res))
1199 res = SSL_read(sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1200 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1203 if (ssl_check_error(h, sp, res))
1210 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1212 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1213 if (hasread > berlen)
1215 tomove = req = hasread - berlen;
1216 rest = tomove % CS_TCPIP_BUFCHUNK;
1218 req += CS_TCPIP_BUFCHUNK - rest;
1221 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1223 } else if (sp->altsize < req)
1224 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1226 TRC(fprintf(stderr, " Moving %d bytes to altbuf(%p)\n", tomove,
1228 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1230 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1231 *(*buf + berlen) = '\0';
1232 return berlen ? berlen : 1;
1237 * Returns 1, 0 or -1
1238 * In nonblocking mode, you must call again with same buffer while
1239 * return value is 1.
1241 int tcpip_put(COMSTACK h, char *buf, int size)
1244 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1246 TRC(fprintf(stderr, "tcpip_put: h=%p size=%d\n", h, size));
1249 if (state->towrite < 0)
1251 state->towrite = size;
1254 else if (state->towrite != size)
1256 h->cerrno = CSWRONGBUF;
1259 while (state->towrite > state->written)
1262 send(h->iofile, buf + state->written, size -
1273 WSAGetLastError() == WSAEWOULDBLOCK
1275 yaz_errno() == EWOULDBLOCK
1277 #if EAGAIN != EWOULDBLOCK
1278 || yaz_errno() == EAGAIN
1282 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1284 || yaz_errno() == EINPROGRESS
1288 TRC(fprintf(stderr, " Flow control stop\n"));
1289 h->io_pending = CS_WANT_WRITE;
1292 h->cerrno = CSYSERR;
1295 state->written += res;
1296 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1297 res, state->written, size));
1299 state->towrite = state->written = -1;
1300 TRC(fprintf(stderr, " Ok\n"));
1307 * Returns 1, 0 or -1
1308 * In nonblocking mode, you must call again with same buffer while
1309 * return value is 1.
1311 int ssl_put(COMSTACK h, char *buf, int size)
1314 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1316 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1319 if (state->towrite < 0)
1321 state->towrite = size;
1324 else if (state->towrite != size)
1326 h->cerrno = CSWRONGBUF;
1329 while (state->towrite > state->written)
1332 res = gnutls_record_send(state->session, buf + state->written,
1333 size - state->written);
1336 if (ssl_check_error(h, state, res))
1341 res = SSL_write(state->ssl, buf + state->written,
1342 size - state->written);
1345 if (ssl_check_error(h, state, res))
1350 state->written += res;
1351 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1352 res, state->written, size));
1354 state->towrite = state->written = -1;
1355 TRC(fprintf(stderr, " Ok\n"));
1360 void tcpip_close(COMSTACK h)
1362 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1364 TRC(fprintf(stderr, "tcpip_close: h=%p pid=%d\n", h, getpid()));
1365 if (h->iofile != -1)
1369 gnutls_bye(sp->session, GNUTLS_SHUT_WR);
1370 #elif HAVE_OPENSSL_SSL_H
1373 SSL_shutdown(sp->ssl);
1377 closesocket(h->iofile);
1387 gnutls_deinit(sp->session);
1391 assert(sp->cred_ptr->ref > 0);
1393 if (--(sp->cred_ptr->ref) == 0)
1395 TRC(fprintf(stderr, "Removed credentials %p pid=%d\n",
1396 sp->cred_ptr->xcred, getpid()));
1397 gnutls_certificate_free_credentials(sp->cred_ptr->xcred);
1398 xfree(sp->cred_ptr);
1402 #elif HAVE_OPENSSL_SSL_H
1405 TRC(fprintf(stderr, "SSL_free\n"));
1410 SSL_CTX_free(sp->ctx_alloc);
1412 #if HAVE_GETADDRINFO
1414 freeaddrinfo(sp->ai);
1416 xfree(sp->connect_request_buf);
1417 xfree(sp->connect_response_buf);
1422 const char *tcpip_addrstr(COMSTACK h)
1424 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1425 char *r = 0, *buf = sp->buf;
1427 #if HAVE_GETADDRINFO
1429 struct sockaddr_storage addr;
1430 YAZ_SOCKLEN_T len = sizeof(addr);
1432 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1434 h->cerrno = CSYSERR;
1437 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1439 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1448 struct sockaddr_in addr;
1449 YAZ_SOCKLEN_T len = sizeof(addr);
1450 struct hostent *host;
1452 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1454 h->cerrno = CSYSERR;
1457 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1459 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1460 sizeof(addr.sin_addr),
1462 r = (char*) host->h_name;
1465 r = inet_ntoa(addr.sin_addr);
1468 if (h->protocol == PROTO_HTTP)
1469 sprintf(buf, "http:%s", r);
1471 sprintf(buf, "tcp:%s", r);
1475 if (h->protocol == PROTO_HTTP)
1476 sprintf(buf, "https:%s", r);
1478 sprintf(buf, "ssl:%s", r);
1480 #elif HAVE_OPENSSL_SSL_H
1483 if (h->protocol == PROTO_HTTP)
1484 sprintf(buf, "https:%s", r);
1486 sprintf(buf, "ssl:%s", r);
1492 static int tcpip_set_blocking(COMSTACK p, int flags)
1497 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1498 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1501 flag = fcntl(p->iofile, F_GETFL, 0);
1502 if (flags & CS_FLAGS_BLOCKING)
1503 flag = flag & ~O_NONBLOCK; /* blocking */
1506 flag = flag | O_NONBLOCK; /* non-blocking */
1507 signal(SIGPIPE, SIG_IGN);
1509 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1518 /* gnutls_x509_crt_print appeared in 1.7.6. Memory leaks were fixed in 1.7.9.
1519 GNUTLS_CRT_PRINT_FULL appeared in 2.4.0. */
1520 #if GNUTLS_VERSION_NUMBER >= 0x020400
1521 #define USE_GNUTLS_X509_CRT_PRINT 1
1523 #define USE_GNUTLS_X509_CRT_PRINT 0
1527 #if USE_GNUTLS_X509_CRT_PRINT
1529 static const char *bin2hex(const void *bin, size_t bin_size)
1531 static char printable[110];
1532 const unsigned char *_bin = bin;
1538 for (i = 0; i < bin_size; i++)
1540 sprintf(print, "%.2x ", _bin[i]);
1546 static void x509_crt_print(gnutls_x509_crt_t cert)
1548 time_t expiration_time, activation_time;
1552 unsigned int algo, bits;
1554 expiration_time = gnutls_x509_crt_get_expiration_time(cert);
1555 activation_time = gnutls_x509_crt_get_activation_time(cert);
1557 printf("\tCertificate is valid since: %s", ctime(&activation_time));
1558 printf("\tCertificate expires: %s", ctime(&expiration_time));
1560 /* Print the serial number of the certificate. */
1561 size = sizeof(serial);
1562 gnutls_x509_crt_get_serial(cert, serial, &size);
1564 printf("\tCertificate serial number: %s\n", bin2hex(serial, size));
1566 /* Extract some of the public key algorithm's parameters
1568 algo = gnutls_x509_crt_get_pk_algorithm(cert, &bits);
1570 printf("Certificate public key: %s", gnutls_pk_algorithm_get_name(algo));
1572 /* Print the version of the X.509 certificate. */
1573 printf("\tCertificate version: #%d\n", gnutls_x509_crt_get_version(cert));
1576 gnutls_x509_crt_get_dn(cert, dn, &size);
1577 printf("\tDN: %s\n", dn);
1580 gnutls_x509_crt_get_issuer_dn(cert, dn, &size);
1581 printf("\tIssuer's DN: %s\n", dn);
1586 void cs_print_session_info(COMSTACK cs)
1589 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1590 if (cs->type == ssl_type && sp->session)
1592 const gnutls_datum_t *cert_list;
1593 unsigned i, cert_list_size;
1594 if (gnutls_certificate_type_get(sp->session) != GNUTLS_CRT_X509)
1596 printf("X509 certificate\n");
1597 cert_list = gnutls_certificate_get_peers(sp->session,
1599 printf("Peer provided %u certificates\n", cert_list_size);
1600 for (i = 0; i < cert_list_size; i++)
1602 gnutls_x509_crt_t cert;
1603 #if USE_GNUTLS_X509_CRT_PRINT
1605 gnutls_datum_t cinfo;
1607 gnutls_x509_crt_init(&cert);
1608 gnutls_x509_crt_import(cert, &cert_list[i], GNUTLS_X509_FMT_DER);
1609 printf("Certificate info %d:\n", i + 1);
1610 #if USE_GNUTLS_X509_CRT_PRINT
1611 ret = gnutls_x509_crt_print(cert, GNUTLS_CRT_PRINT_FULL,
1615 printf("\t%s\n", cinfo.data);
1616 gnutls_free(cinfo.data);
1619 x509_crt_print(cert);
1621 gnutls_x509_crt_deinit(cert);
1625 #elif HAVE_OPENSSL_SSL_H
1626 if (cs->type == ssl_type)
1628 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1629 SSL *ssl = (SSL *) sp->ssl;
1632 X509 *server_cert = SSL_get_peer_certificate(ssl);
1637 BIO *bio = BIO_new(BIO_s_mem());
1639 /* get PEM buffer in memory */
1640 PEM_write_bio_X509(bio, server_cert);
1641 pem_len = BIO_get_mem_data(bio, &pem_buf);
1642 fwrite(pem_buf, pem_len, 1, stdout);
1644 /* print all info on screen .. */
1645 X509_print_fp(stdout, server_cert);
1648 X509_free(server_cert);
1655 void *cs_get_ssl(COMSTACK cs)
1657 #if HAVE_OPENSSL_SSL_H
1658 if (cs && cs->type == ssl_type)
1660 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1667 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1670 if (cs && cs->type == ssl_type)
1672 #if HAVE_OPENSSL_SSL_H
1673 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1676 sp->ctx = (SSL_CTX *) ctx;
1684 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1687 if (cs && cs->type == ssl_type)
1689 struct tcpip_state *sp = (struct tcpip_state *) cs->cprivate;
1690 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1691 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1698 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1700 #if HAVE_OPENSSL_SSL_H
1701 SSL *ssl = (SSL *) cs_get_ssl(cs);
1704 X509 *server_cert = SSL_get_peer_certificate(ssl);
1707 BIO *bio = BIO_new(BIO_s_mem());
1709 /* get PEM buffer in memory */
1710 PEM_write_bio_X509(bio, server_cert);
1711 *len = BIO_get_mem_data(bio, &pem_buf);
1712 *buf = (char *) xmalloc(*len);
1713 memcpy(*buf, pem_buf, *len);
1722 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1724 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1726 int r = tcpip_put(h, state->connect_request_buf,
1727 state->connect_request_len);
1731 h->f_put = tcpip_put; /* switch to normal tcpip put */
1732 r = tcpip_put(h, buf, size);
1737 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1739 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1742 r = tcpip_get(h, &state->connect_response_buf,
1743 &state->connect_response_len);
1746 /* got the connect response completely */
1747 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1748 h->f_get = tcpip_get;
1749 return tcpip_get(h, buf, bufsize);
1756 * c-file-style: "Stroustrup"
1757 * indent-tabs-mode: nil
1759 * vim: shiftwidth=4 tabstop=8 expandtab