2 * Copyright (C) 1995-2007, Index Data ApS
3 * See the file LICENSE for details.
5 * $Id: tcpip.c,v 1.35 2007-10-07 08:53:26 adam Exp $
9 * \brief Implements TCP/IP + SSL COMSTACK.
19 #include <sys/types.h>
30 /* VS 2003 or later has getaddrinfo; older versions do not */
34 #define HAVE_GETADDRINFO 1
36 #define HAVE_GETADDRINFO 0
40 #include <netinet/in.h>
42 #include <arpa/inet.h>
43 #include <netinet/tcp.h>
47 #include <sys/socket.h>
50 #include <sys/select.h>
56 #if HAVE_OPENSSL_SSL_H
57 #include <openssl/ssl.h>
58 #include <openssl/err.h>
61 #include <yaz/comstack.h>
62 #include <yaz/tcpip.h>
65 static int tcpip_close(COMSTACK h);
66 static int tcpip_put(COMSTACK h, char *buf, int size);
67 static int tcpip_get(COMSTACK h, char **buf, int *bufsize);
68 static int tcpip_put_connect(COMSTACK h, char *buf, int size);
69 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize);
70 static int tcpip_connect(COMSTACK h, void *address);
71 static int tcpip_more(COMSTACK h);
72 static int tcpip_rcvconnect(COMSTACK h);
73 static int tcpip_bind(COMSTACK h, void *address, int mode);
74 static int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
75 int (*check_ip)(void *cd, const char *a, int len, int type),
77 static int tcpip_set_blocking(COMSTACK p, int blocking);
79 #if HAVE_OPENSSL_SSL_H
80 static int ssl_get(COMSTACK h, char **buf, int *bufsize);
81 static int ssl_put(COMSTACK h, char *buf, int size);
84 static COMSTACK tcpip_accept(COMSTACK h);
85 static char *tcpip_addrstr(COMSTACK h);
86 static void *tcpip_straddr(COMSTACK h, const char *str);
95 #define YAZ_SOCKLEN_T int
98 /* this state is used for both SSL and straight TCP/IP */
99 typedef struct tcpip_state
101 char *altbuf; /* alternate buffer for surplus data */
102 int altsize; /* size as xmalloced */
103 int altlen; /* length of data or 0 if none */
105 int written; /* -1 if we aren't writing */
106 int towrite; /* to verify against user input */
107 int (*complete)(const unsigned char *buf, int len); /* length/comple. */
111 struct sockaddr_in addr; /* returned by cs_straddr */
113 char buf[128]; /* returned by cs_addrstr */
114 #if HAVE_OPENSSL_SSL_H
115 SSL_CTX *ctx; /* current CTX. */
116 SSL_CTX *ctx_alloc; /* If =ctx it is owned by CS. If 0 it is not owned */
118 char cert_fname[256];
120 char *connect_request_buf;
121 int connect_request_len;
122 char *connect_response_buf;
123 int connect_response_len;
127 static int tcpip_init (void)
129 static int initialized = 0;
135 requested = MAKEWORD(1, 1);
136 if (WSAStartup(requested, &wd))
143 static int tcpip_init (void)
150 * This function is always called through the cs_create() macro.
151 * s >= 0: socket has already been established for us.
153 COMSTACK tcpip_type(int s, int flags, int protocol, void *vp)
160 if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
162 if (!(sp = (struct tcpip_state *)(p->cprivate =
163 xmalloc(sizeof(tcpip_state)))))
170 p->type = tcpip_type;
171 p->protocol = (enum oid_proto) protocol;
173 p->f_connect = tcpip_connect;
174 p->f_rcvconnect = tcpip_rcvconnect;
175 p->f_get = tcpip_get;
176 p->f_put = tcpip_put;
177 p->f_close = tcpip_close;
178 p->f_more = tcpip_more;
179 p->f_bind = tcpip_bind;
180 p->f_listen = tcpip_listen;
181 p->f_accept = tcpip_accept;
182 p->f_addrstr = tcpip_addrstr;
183 p->f_straddr = tcpip_straddr;
184 p->f_set_blocking = tcpip_set_blocking;
185 p->max_recv_bytes = 5000000;
187 p->state = s < 0 ? CS_ST_UNBND : CS_ST_IDLE; /* state of line */
193 #if HAVE_OPENSSL_SSL_H
194 sp->ctx = sp->ctx_alloc = 0;
196 strcpy(sp->cert_fname, "yaz.pem");
203 sp->altsize = sp->altlen = 0;
204 sp->towrite = sp->written = -1;
205 if (protocol == PROTO_WAIS)
206 sp->complete = completeWAIS;
208 sp->complete = cs_complete_auto;
210 sp->connect_request_buf = 0;
211 sp->connect_request_len = 0;
212 sp->connect_response_buf = 0;
213 sp->connect_response_len = 0;
215 p->timeout = COMSTACK_DEFAULT_TIMEOUT;
216 TRC(fprintf(stderr, "Created new TCPIP comstack\n"));
221 COMSTACK yaz_tcpip_create(int s, int flags, int protocol,
222 const char *connect_host)
224 COMSTACK p = tcpip_type(s, flags, protocol, 0);
229 tcpip_state *sp = (tcpip_state *) p->cprivate;
230 sp->connect_request_buf = xmalloc(strlen(connect_host) + 30);
231 sprintf(sp->connect_request_buf, "CONNECT %s HTTP/1.0\r\n\r\n",
233 sp->connect_request_len = strlen(sp->connect_request_buf);
234 p->f_put = tcpip_put_connect;
235 p->f_get = tcpip_get_connect;
236 sp->complete = cs_complete_auto_head; /* only want HTTP header */
242 #if HAVE_OPENSSL_SSL_H
244 COMSTACK ssl_type(int s, int flags, int protocol, void *vp)
249 p = tcpip_type (s, flags, protocol, 0);
255 sp = (tcpip_state *) p->cprivate;
257 sp->ctx = (SSL_CTX *) vp; /* may be NULL */
259 /* note: we don't handle already opened socket in SSL mode - yet */
265 /* resolve using getaddrinfo */
266 struct addrinfo *tcpip_getaddrinfo(const char *str, const char *port)
268 struct addrinfo hints, *res;
273 hints.ai_family = AF_UNSPEC;
274 hints.ai_socktype = SOCK_STREAM;
275 hints.ai_protocol = 0;
276 hints.ai_addrlen = 0;
277 hints.ai_addr = NULL;
278 hints.ai_canonname = NULL;
279 hints.ai_next = NULL;
281 strncpy(host, str, sizeof(host)-1);
282 host[sizeof(host)-1] = 0;
283 if ((p = strchr(host, '/')))
285 if ((p = strrchr(host, ':')))
291 if (!strcmp("@", host))
293 hints.ai_flags = AI_PASSIVE;
294 error = getaddrinfo(0, port, &hints, &res);
298 error = getaddrinfo(host, port, &hints, &res);
306 /* gethostbyname .. old systems */
307 int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add,
312 short int port = default_port;
314 unsigned long tmpadd;
318 TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
319 add->sin_family = AF_INET;
320 strncpy(buf, str, sizeof(buf)-1);
321 buf[sizeof(buf)-1] = 0;
322 if ((p = strchr(buf, '/')))
324 if ((p = strrchr(buf, ':')))
329 add->sin_port = htons(port);
330 if (!strcmp("@", buf))
332 add->sin_addr.s_addr = INADDR_ANY;
334 else if ((tmpadd = inet_addr(buf)) != -1)
336 memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
338 else if ((hp = gethostbyname(buf)))
340 memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
341 sizeof(struct in_addr));
350 void *tcpip_straddr(COMSTACK h, const char *str)
352 tcpip_state *sp = (tcpip_state *)h->cprivate;
353 const char *port = "210";
354 if (h->protocol == PROTO_HTTP)
360 freeaddrinfo(sp->ai);
361 sp->ai = tcpip_getaddrinfo(str, port);
362 if (sp->ai && h->state == CS_ST_UNBND)
365 struct addrinfo *ai = sp->ai;
366 for (; ai; ai = ai->ai_next)
368 s = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
376 if (!tcpip_set_blocking(h, h->flags))
382 void *tcpip_straddr(COMSTACK h, const char *str)
384 tcpip_state *sp = (tcpip_state *)h->cprivate;
386 if (h->protocol == PROTO_HTTP)
391 if (!tcpip_strtoaddr_ex (str, &sp->addr, port))
393 if (h->state == CS_ST_UNBND)
396 s = socket(AF_INET, SOCK_STREAM, 0);
401 if (!tcpip_set_blocking(h, h->flags))
408 int tcpip_more(COMSTACK h)
410 tcpip_state *sp = (tcpip_state *)h->cprivate;
412 return sp->altlen && (*sp->complete)((unsigned char *) sp->altbuf,
417 * connect(2) will block (sometimes) - nothing we can do short of doing
418 * weird things like spawning subprocesses or threading or some weird junk
421 int tcpip_connect(COMSTACK h, void *address)
424 tcpip_state *sp = (tcpip_state *)h->cprivate;
426 struct sockaddr_in *add = (struct sockaddr_in *) address;
431 YAZ_SOCKLEN_T rbufsize = sizeof(recbuflen);
433 TRC(fprintf(stderr, "tcpip_connect\n"));
435 if (h->state != CS_ST_UNBND)
437 h->cerrno = CSOUTSTATE;
441 if (sp->ai != (struct addrinfo *) address)
443 h->cerrno = CSOUTSTATE;
448 /* On Suns, you must set a bigger Receive Buffer BEFORE a call to connect
449 * This gives the connect a chance to negotiate with the other side
452 if ( getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) < 0 )
457 TRC(fprintf( stderr, "Current Size of TCP Receive Buffer= %d\n",
459 recbuflen *= 10; /* lets be optimistic */
460 if ( setsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, rbufsize ) < 0 )
465 if ( getsockopt(h->iofile, SOL_SOCKET, SO_RCVBUF, (void *)&recbuflen, &rbufsize ) )
470 TRC(fprintf( stderr, "New Size of TCP Receive Buffer = %d\n",
475 r = connect(h->iofile, sp->ai->ai_addr, sp->ai->ai_addrlen);
476 freeaddrinfo(sp->ai);
479 r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
484 if (WSAGetLastError() == WSAEWOULDBLOCK)
486 h->event = CS_CONNECT;
487 h->state = CS_ST_CONNECTING;
488 h->io_pending = CS_WANT_WRITE;
492 if (yaz_errno() == EINPROGRESS)
494 h->event = CS_CONNECT;
495 h->state = CS_ST_CONNECTING;
496 h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
503 h->event = CS_CONNECT;
504 h->state = CS_ST_CONNECTING;
506 return tcpip_rcvconnect (h);
512 int tcpip_rcvconnect(COMSTACK h)
514 #if HAVE_OPENSSL_SSL_H
515 tcpip_state *sp = (tcpip_state *)h->cprivate;
517 TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
519 if (h->state == CS_ST_DATAXFER)
521 if (h->state != CS_ST_CONNECTING)
523 h->cerrno = CSOUTSTATE;
526 #if HAVE_OPENSSL_SSL_H
527 if (h->type == ssl_type && !sp->ctx)
530 SSL_load_error_strings();
532 sp->ctx = sp->ctx_alloc = SSL_CTX_new (SSLv23_method());
535 h->cerrno = CSERRORSSL;
545 sp->ssl = SSL_new (sp->ctx);
546 SSL_set_fd (sp->ssl, h->iofile);
548 res = SSL_connect (sp->ssl);
551 int err = SSL_get_error(sp->ssl, res);
552 if (err == SSL_ERROR_WANT_READ)
554 h->io_pending = CS_WANT_READ;
557 if (err == SSL_ERROR_WANT_WRITE)
559 h->io_pending = CS_WANT_WRITE;
562 h->cerrno = CSERRORSSL;
568 h->state = CS_ST_DATAXFER;
572 #define CERTF "ztest.pem"
573 #define KEYF "ztest.pem"
575 static void tcpip_setsockopt (int fd)
581 if (setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char*)&set, sizeof(int)))
583 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt TCP_NODELAY");
585 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (char*)&len, sizeof(int)))
587 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt SNDBUF");
589 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char*)&len, sizeof(int)))
591 yaz_log(LOG_WARN|LOG_ERRNO, "setsockopt RCVBUF");
596 static int tcpip_bind(COMSTACK h, void *address, int mode)
599 tcpip_state *sp = (tcpip_state *)h->cprivate;
602 struct sockaddr *addr = (struct sockaddr *)address;
611 if (sp->ai != (struct addrinfo *) address)
613 h->cerrno = CSOUTSTATE;
618 #if HAVE_OPENSSL_SSL_H
619 if (h->type == ssl_type && !sp->ctx)
622 SSL_load_error_strings();
624 sp->ctx = sp->ctx_alloc = SSL_CTX_new (SSLv23_method());
627 h->cerrno = CSERRORSSL;
636 res = SSL_CTX_use_certificate_chain_file(sp->ctx, sp->cert_fname);
639 ERR_print_errors_fp(stderr);
642 res = SSL_CTX_use_PrivateKey_file (sp->ctx, sp->cert_fname,
646 ERR_print_errors_fp(stderr);
649 res = SSL_CTX_check_private_key (sp->ctx);
652 ERR_print_errors_fp(stderr);
656 TRC (fprintf (stderr, "ssl_bind\n"));
660 TRC (fprintf (stderr, "tcpip_bind\n"));
663 TRC (fprintf (stderr, "tcpip_bind\n"));
666 if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
667 &one, sizeof(one)) < 0)
673 tcpip_setsockopt(h->iofile);
675 r = bind(h->iofile, sp->ai->ai_addr, sp->ai->ai_addrlen);
676 freeaddrinfo(sp->ai);
679 r = bind(h->iofile, addr, sizeof(struct sockaddr_in));
686 /* Allow a maximum-sized backlog of waiting-to-connect clients */
687 if (mode == CS_SERVER && listen(h->iofile, SOMAXCONN) < 0)
692 h->state = CS_ST_IDLE;
693 h->event = CS_LISTEN;
697 int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
698 int (*check_ip)(void *cd, const char *a, int len, int t),
701 struct sockaddr_in addr;
702 YAZ_SOCKLEN_T len = sizeof(addr);
704 TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
705 if (h->state != CS_ST_IDLE)
707 h->cerrno = CSOUTSTATE;
710 h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
715 WSAGetLastError() == WSAEWOULDBLOCK
717 yaz_errno() == EWOULDBLOCK
719 #if EAGAIN != EWOULDBLOCK
720 || yaz_errno() == EAGAIN
725 h->cerrno = CSNODATA;
730 if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
731 memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
734 if (check_ip && (*check_ip)(cd, (const char *) &addr,
735 sizeof(addr), AF_INET))
739 closesocket(h->newfd);
746 h->state = CS_ST_INCON;
747 tcpip_setsockopt (h->newfd);
751 COMSTACK tcpip_accept(COMSTACK h)
754 tcpip_state *state, *st = (tcpip_state *)h->cprivate;
756 unsigned long tru = 1;
759 TRC(fprintf(stderr, "tcpip_accept\n"));
760 if (h->state == CS_ST_INCON)
762 if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
766 closesocket(h->newfd);
773 memcpy(cnew, h, sizeof(*h));
774 cnew->iofile = h->newfd;
775 cnew->io_pending = 0;
776 if (!(state = (tcpip_state *)
777 (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
783 closesocket(h->newfd);
791 if (!tcpip_set_blocking(cnew, cnew->flags))
797 closesocket(h->newfd);
809 state->altsize = state->altlen = 0;
810 state->towrite = state->written = -1;
811 state->complete = st->complete;
815 cnew->state = CS_ST_ACCEPT;
816 h->state = CS_ST_IDLE;
818 #if HAVE_OPENSSL_SSL_H
819 state->ctx = st->ctx;
820 state->ctx_alloc = 0;
821 state->ssl = st->ssl;
824 state->ssl = SSL_new (state->ctx);
825 SSL_set_fd (state->ssl, cnew->iofile);
827 state->connect_request_buf = 0;
828 state->connect_response_buf = 0;
832 if (h->state == CS_ST_ACCEPT)
834 #if HAVE_OPENSSL_SSL_H
835 tcpip_state *state = (tcpip_state *)h->cprivate;
838 int res = SSL_accept (state->ssl);
839 TRC(fprintf(stderr, "SSL_accept\n"));
842 int err = SSL_get_error(state->ssl, res);
843 if (err == SSL_ERROR_WANT_READ)
845 h->io_pending = CS_WANT_READ;
848 if (err == SSL_ERROR_WANT_WRITE)
850 h->io_pending = CS_WANT_WRITE;
861 h->cerrno = CSOUTSTATE;
865 h->state = CS_ST_DATAXFER;
870 #define CS_TCPIP_BUFCHUNK 4096
873 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
874 * 0=connection closed.
876 int tcpip_get(COMSTACK h, char **buf, int *bufsize)
878 tcpip_state *sp = (tcpip_state *)h->cprivate;
880 int tmpi, berlen, rest, req, tomove;
881 int hasread = 0, res;
883 TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
884 if (sp->altlen) /* switch buffers */
886 TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
887 (unsigned) sp->altbuf));
891 *bufsize = sp->altsize;
892 hasread = sp->altlen;
898 while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
902 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
908 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
909 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
916 /* unfortunatly, sun sometimes forgets to set errno in recv
917 when EWOULDBLOCK etc. would be required (res = -1) */
919 res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
920 TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
923 TRC(fprintf(stderr, " recv errno=%d, (%s)\n", yaz_errno(),
924 strerror(yaz_errno())));
926 if (WSAGetLastError() == WSAEWOULDBLOCK)
928 h->io_pending = CS_WANT_READ;
937 if (yaz_errno() == EWOULDBLOCK
939 #if EAGAIN != EWOULDBLOCK
940 || yaz_errno() == EAGAIN
943 || yaz_errno() == EINPROGRESS
945 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this */
949 h->io_pending = CS_WANT_READ;
952 else if (yaz_errno() == 0)
964 if (hasread > h->max_recv_bytes)
966 h->cerrno = CSBUFSIZE;
970 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
972 /* move surplus buffer (or everything if we didn't get a BER rec.) */
973 if (hasread > berlen)
975 tomove = req = hasread - berlen;
976 rest = tomove % CS_TCPIP_BUFCHUNK;
978 req += CS_TCPIP_BUFCHUNK - rest;
981 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
986 } else if (sp->altsize < req)
987 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
992 TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
993 (unsigned) sp->altbuf));
994 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
996 if (berlen < CS_TCPIP_BUFCHUNK - 1)
997 *(*buf + berlen) = '\0';
998 return berlen ? berlen : 1;
1002 #if HAVE_OPENSSL_SSL_H
1004 * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
1005 * 0=connection closed.
1007 int ssl_get(COMSTACK h, char **buf, int *bufsize)
1009 tcpip_state *sp = (tcpip_state *)h->cprivate;
1011 int tmpi, berlen, rest, req, tomove;
1012 int hasread = 0, res;
1014 TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
1015 if (sp->altlen) /* switch buffers */
1017 TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
1018 (unsigned) sp->altbuf));
1022 *bufsize = sp->altsize;
1023 hasread = sp->altlen;
1029 while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
1033 if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
1036 else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
1037 if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
1039 res = SSL_read (sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
1040 TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
1043 int ssl_err = SSL_get_error(sp->ssl, res);
1044 if (ssl_err == SSL_ERROR_WANT_READ)
1046 h->io_pending = CS_WANT_READ;
1049 if (ssl_err == SSL_ERROR_WANT_WRITE)
1051 h->io_pending = CS_WANT_WRITE;
1056 h->cerrno = CSERRORSSL;
1061 TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
1063 /* move surplus buffer (or everything if we didn't get a BER rec.) */
1064 if (hasread > berlen)
1066 tomove = req = hasread - berlen;
1067 rest = tomove % CS_TCPIP_BUFCHUNK;
1069 req += CS_TCPIP_BUFCHUNK - rest;
1072 if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
1074 } else if (sp->altsize < req)
1075 if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
1077 TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
1078 (unsigned) sp->altbuf));
1079 memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
1081 if (berlen < CS_TCPIP_BUFCHUNK - 1)
1082 *(*buf + berlen) = '\0';
1083 return berlen ? berlen : 1;
1088 * Returns 1, 0 or -1
1089 * In nonblocking mode, you must call again with same buffer while
1090 * return value is 1.
1092 int tcpip_put(COMSTACK h, char *buf, int size)
1095 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1097 TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
1100 if (state->towrite < 0)
1102 state->towrite = size;
1105 else if (state->towrite != size)
1107 h->cerrno = CSWRONGBUF;
1110 while (state->towrite > state->written)
1113 send(h->iofile, buf + state->written, size -
1124 WSAGetLastError() == WSAEWOULDBLOCK
1126 yaz_errno() == EWOULDBLOCK
1128 #if EAGAIN != EWOULDBLOCK
1129 || yaz_errno() == EAGAIN
1133 || yaz_errno() == ENOENT /* Sun's sometimes set errno to this value! */
1135 || yaz_errno() == EINPROGRESS
1139 TRC(fprintf(stderr, " Flow control stop\n"));
1140 h->io_pending = CS_WANT_WRITE;
1143 h->cerrno = CSYSERR;
1146 state->written += res;
1147 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1148 res, state->written, size));
1150 state->towrite = state->written = -1;
1151 TRC(fprintf(stderr, " Ok\n"));
1156 #if HAVE_OPENSSL_SSL_H
1158 * Returns 1, 0 or -1
1159 * In nonblocking mode, you must call again with same buffer while
1160 * return value is 1.
1162 int ssl_put(COMSTACK h, char *buf, int size)
1165 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1167 TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
1170 if (state->towrite < 0)
1172 state->towrite = size;
1175 else if (state->towrite != size)
1177 h->cerrno = CSWRONGBUF;
1180 while (state->towrite > state->written)
1182 res = SSL_write (state->ssl, buf + state->written,
1183 size - state->written);
1186 int ssl_err = SSL_get_error(state->ssl, res);
1187 if (ssl_err == SSL_ERROR_WANT_READ)
1189 h->io_pending = CS_WANT_READ;
1192 if (ssl_err == SSL_ERROR_WANT_WRITE)
1194 h->io_pending = CS_WANT_WRITE;
1197 h->cerrno = CSERRORSSL;
1200 state->written += res;
1201 TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
1202 res, state->written, size));
1204 state->towrite = state->written = -1;
1205 TRC(fprintf(stderr, " Ok\n"));
1210 int tcpip_close(COMSTACK h)
1212 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1214 TRC(fprintf(stderr, "tcpip_close\n"));
1215 if (h->iofile != -1)
1217 #if HAVE_OPENSSL_SSL_H
1220 SSL_shutdown (sp->ssl);
1224 closesocket(h->iofile);
1231 #if HAVE_OPENSSL_SSL_H
1234 TRC (fprintf(stderr, "SSL_free\n"));
1239 SSL_CTX_free (sp->ctx_alloc);
1241 #if HAVE_GETADDRINFO
1243 freeaddrinfo(sp->ai);
1245 xfree(sp->connect_request_buf);
1246 xfree(sp->connect_response_buf);
1252 char *tcpip_addrstr(COMSTACK h)
1254 tcpip_state *sp = (struct tcpip_state *)h->cprivate;
1255 char *r = 0, *buf = sp->buf;
1257 #if HAVE_GETADDRINFO
1259 struct sockaddr_storage addr;
1260 YAZ_SOCKLEN_T len = sizeof(addr);
1262 if (getpeername(h->iofile, (struct sockaddr *)&addr, &len) < 0)
1264 h->cerrno = CSYSERR;
1267 if (getnameinfo((struct sockaddr *) &addr, len, host, sizeof(host)-1,
1269 (h->flags & CS_FLAGS_NUMERICHOST) ? NI_NUMERICHOST : 0))
1278 struct sockaddr_in addr;
1279 YAZ_SOCKLEN_T len = sizeof(addr);
1280 struct hostent *host;
1282 if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
1284 h->cerrno = CSYSERR;
1287 if (!(h->flags & CS_FLAGS_NUMERICHOST))
1289 if ((host = gethostbyaddr((char*)&addr.sin_addr,
1290 sizeof(addr.sin_addr),
1292 r = (char*) host->h_name;
1295 r = inet_ntoa(addr.sin_addr);
1298 if (h->protocol == PROTO_HTTP)
1299 sprintf(buf, "http:%s", r);
1301 sprintf(buf, "tcp:%s", r);
1302 #if HAVE_OPENSSL_SSL_H
1305 if (h->protocol == PROTO_HTTP)
1306 sprintf(buf, "https:%s", r);
1308 sprintf(buf, "ssl:%s", r);
1314 int static tcpip_set_blocking(COMSTACK p, int flags)
1319 flag = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
1320 if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
1323 flag = fcntl(p->iofile, F_GETFL, 0);
1324 if (flags & CS_FLAGS_BLOCKING)
1325 flag = flag & ~O_NONBLOCK; /* blocking */
1328 flag = flag | O_NONBLOCK; /* non-blocking */
1329 signal(SIGPIPE, SIG_IGN);
1331 if (fcntl(p->iofile, F_SETFL, flag) < 0)
1338 #if HAVE_OPENSSL_SSL_H
1339 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1341 struct tcpip_state *sp;
1342 if (!cs || cs->type != ssl_type)
1344 sp = (struct tcpip_state *) cs->cprivate;
1347 sp->ctx = (SSL_CTX *) ctx;
1351 void *cs_get_ssl(COMSTACK cs)
1353 struct tcpip_state *sp;
1354 if (!cs || cs->type != ssl_type)
1356 sp = (struct tcpip_state *) cs->cprivate;
1360 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1362 struct tcpip_state *sp;
1363 if (!cs || cs->type != ssl_type)
1365 sp = (struct tcpip_state *) cs->cprivate;
1366 strncpy(sp->cert_fname, fname, sizeof(sp->cert_fname)-1);
1367 sp->cert_fname[sizeof(sp->cert_fname)-1] = '\0';
1371 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1373 SSL *ssl = (SSL *) cs_get_ssl(cs);
1376 X509 *server_cert = SSL_get_peer_certificate (ssl);
1379 BIO *bio = BIO_new(BIO_s_mem());
1381 /* get PEM buffer in memory */
1382 PEM_write_bio_X509(bio, server_cert);
1383 *len = BIO_get_mem_data(bio, &pem_buf);
1384 *buf = (char *) xmalloc(*len);
1385 memcpy(*buf, pem_buf, *len);
1393 int cs_set_ssl_ctx(COMSTACK cs, void *ctx)
1398 void *cs_get_ssl(COMSTACK cs)
1403 int cs_get_peer_certificate_x509(COMSTACK cs, char **buf, int *len)
1408 int cs_set_ssl_certificate_file(COMSTACK cs, const char *fname)
1415 static int tcpip_put_connect(COMSTACK h, char *buf, int size)
1417 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1419 int r = tcpip_put(h, state->connect_request_buf,
1420 state->connect_request_len);
1424 h->f_put = tcpip_put; /* switch to normal tcpip put */
1425 r = tcpip_put(h, buf, size);
1430 static int tcpip_get_connect(COMSTACK h, char **buf, int *bufsize)
1432 struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
1435 r = tcpip_get(h, &state->connect_response_buf,
1436 &state->connect_response_len);
1439 /* got the connect response completely */
1440 state->complete = cs_complete_auto; /* switch to normal tcpip get */
1441 h->f_get = tcpip_get;
1442 return tcpip_get(h, buf, bufsize);
1449 * indent-tabs-mode: nil
1451 * vim: shiftwidth=4 tabstop=8 expandtab