-/*\r
- * Copyright (c) 1995, Index Data\r
- * See the file LICENSE for details.\r
- * Sebastian Hammer, Adam Dickmeiss\r
- *\r
+/*
+ * Copyright (c) 1995-2001, Index Data
+ * See the file LICENSE for details.
+ *
* $Log: tcpip.c,v $
- * Revision 1.5 1995-09-29 17:01:48 quinn
+ * Revision 1.38 2001-03-21 12:43:36 adam
+ * Implemented cs_create_host. Better error reporting for SSL comstack.
+ *
+ * Revision 1.37 2001/03/08 20:18:55 adam
+ * Added cs_set_blocking. Patch from Matthew Carey.
+ *
+ * Revision 1.36 2001/02/21 13:46:53 adam
+ * C++ fixes.
+ *
+ * Revision 1.35 2000/11/27 15:17:40 adam
+ * Using SSLeay_add_all_algorithms instead of OpenSSL_add_all_algorithms.
+ *
+ * Revision 1.34 2000/11/23 10:58:32 adam
+ * SSL comstack support. Separate POSIX thread support library.
+ *
+ * Revision 1.33 2000/09/04 08:27:11 adam
+ * Work on error handling for tcpip_accept.
+ *
+ * Revision 1.32 1999/11/30 13:47:11 adam
+ * Improved installation. Moved header files to include/yaz.
+ *
+ * Revision 1.31 1999/04/29 07:31:23 adam
+ * Changed tcpip_strtoaddr_ex so that only part 'till '/' is considered
+ * part of hostname.
+ *
+ * Revision 1.30 1999/04/20 09:56:48 adam
+ * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
+ * Modified all encoders/decoders to reflect this change.
+ *
+ * Revision 1.29 1999/04/16 14:45:55 adam
+ * Added interface for tcpd wrapper for access control.
+ *
+ * Revision 1.28 1999/03/31 11:11:14 adam
+ * Function getprotobyname only called once. Minor change in tcpip_get
+ * to handle multi-threaded conditions.
+ *
+ * Revision 1.27 1999/02/02 13:57:31 adam
+ * Uses preprocessor define WIN32 instead of WINDOWS to build code
+ * for Microsoft WIN32.
+ *
+ * Revision 1.26 1999/01/08 11:23:14 adam
+ * Added const modifier to some of the BER/ODR encoding routines.
+ *
+ * Revision 1.25 1998/07/07 15:49:23 adam
+ * Added braces to avoid warning.
+ *
+ * Revision 1.24 1998/06/29 07:59:17 adam
+ * Minor fix.
+ *
+ * Revision 1.23 1998/06/23 15:37:50 adam
+ * Added type cast to prevent warning.
+ *
+ * Revision 1.22 1998/06/22 11:32:36 adam
+ * Added 'conditional cs_listen' feature.
+ *
+ * Revision 1.21 1998/05/20 09:55:32 adam
+ * Function tcpip_get treats EINPROGRESS error in the same way as
+ * EWOULDBLOCK. EINPROGRESS shouldn't be returned - but it is on
+ * Solaris in some cases.
+ *
+ * Revision 1.20 1998/05/18 10:10:40 adam
+ * Minor change to avoid C++ warning.
+ *
+ * Revision 1.19 1998/02/11 11:53:33 adam
+ * Changed code so that it compiles as C++.
+ *
+ * Revision 1.18 1997/09/29 07:15:25 adam
+ * Changed use of setsockopt to avoid warnings on MSVC.
+ *
+ * Revision 1.17 1997/09/17 12:10:30 adam
+ * YAZ version 1.4.
+ *
+ * Revision 1.16 1997/09/01 08:49:14 adam
+ * New windows NT/95 port using MSV5.0. Minor changes only.
+ *
+ * Revision 1.15 1997/05/14 06:53:33 adam
+ * C++ support.
+ *
+ * Revision 1.14 1997/05/01 15:06:32 adam
+ * Moved WINSOCK init. code to tcpip_init routine.
+ *
+ * Revision 1.13 1996/11/01 08:45:18 adam
+ * Bug fix: used close on MS-Windows. Fixed to closesocket.
+ *
+ * Revision 1.12 1996/07/06 19:58:30 quinn
+ * System headerfiles gathered in yconfig
+ *
+ * Revision 1.11 1996/02/23 10:00:39 quinn
+ * WAIS Work
+ *
+ * Revision 1.10 1996/02/20 12:52:11 quinn
+ * WAIS protocol support.
+ *
+ * Revision 1.9 1996/02/10 12:23:11 quinn
+ * Enablie inetd operations fro TCP/IP stack
+ *
+ * Revision 1.8 1995/11/01 13:54:27 quinn
+ * Minor adjustments
+ *
+ * Revision 1.7 1995/10/30 12:41:16 quinn
+ * Added hostname lookup for server.
+ *
+ * Revision 1.6 1995/09/29 17:12:00 quinn
+ * Smallish
+ *
+ * Revision 1.5 1995/09/29 17:01:48 quinn
* More Windows work
- *\r
- * Revision 1.4 1995/09/28 10:12:26 quinn\r
- * Windows-support changes\r
- *\r
- * Revision 1.3 1995/09/27 15:02:45 quinn\r
- * Modified function heads & prototypes.\r
- *\r
- * Revision 1.2 1995/06/15 12:30:06 quinn\r
- * Added @ as hostname alias for INADDR ANY.\r
- *\r
- * Revision 1.1 1995/06/14 09:58:20 quinn\r
- * Renamed yazlib to comstack.\r
- *\r
- * Revision 1.20 1995/05/16 08:51:16 quinn\r
- * License, documentation, and memory fixes\r
- *\r
- * Revision 1.19 1995/04/10 10:24:08 quinn\r
- * Some bug-fixes.\r
- *\r
- * Revision 1.18 1995/03/30 13:29:27 quinn\r
- * Added REUSEADDR in tcpip_bind\r
- *\r
- * Revision 1.17 1995/03/27 08:36:10 quinn\r
- * Some work on nonblocking operation in xmosi.c and rfct.c.\r
- * Added protocol parameter to cs_create()\r
- *\r
- * Revision 1.16 1995/03/21 15:53:41 quinn\r
- * Added rcvconnect\r
- *\r
- * Revision 1.15 1995/03/21 12:31:27 quinn\r
- * Added check for EINPROGRESS on connect.\r
- *\r
- * Revision 1.14 1995/03/20 09:47:21 quinn\r
- * Added server-side support to xmosi.c\r
- * Fixed possible problems in rfct\r
- * Other little mods\r
- *\r
- * Revision 1.13 1995/03/15 16:15:13 adam\r
- * Removed p_write.\r
- *\r
- * Revision 1.12 1995/03/15 15:36:27 quinn\r
- * Mods to support nonblocking I/O\r
- *\r
- * Revision 1.11 1995/03/15 08:37:57 quinn\r
- * Now we're pretty much set for nonblocking I/O.\r
- *\r
- * Revision 1.10 1995/03/14 17:00:07 quinn\r
- * Bug-fixes - added tracing info to tcpip.c\r
- *\r
- * Revision 1.9 1995/03/14 10:28:42 quinn\r
- * Adding server-side support to tcpip.c and fixing bugs in nonblocking I/O\r
- *\r
- * Revision 1.8 1995/03/10 14:22:50 quinn\r
- * Removed debug output.\r
- *\r
- * Revision 1.7 1995/03/10 11:44:59 quinn\r
- * Fixes and debugging\r
- *\r
- * Revision 1.6 1995/03/07 10:26:55 quinn\r
- * Initialized type field in the comstacks.\r
- *\r
- * Revision 1.5 1995/02/14 20:40:07 quinn\r
- * Various stuff.\r
- *\r
- * Revision 1.4 1995/02/14 11:54:49 quinn\r
- * Beginning to add full CCL.\r
- *\r
- * Revision 1.3 1995/02/10 18:58:10 quinn\r
- * Fixed tcpip_get (formerly tcpip_read).\r
- * Turned tst (cli) into a proper, event-driven thingy.\r
- *\r
- * Revision 1.2 1995/02/10 15:55:47 quinn\r
- * Small things.\r
- *\r
- * Revision 1.1 1995/02/09 15:51:52 quinn\r
- * Works better now.\r
- *\r
- */\r
-\r
-#include <stdio.h>\r
-#include <string.h>\r
-#include <stdlib.h>\r
-#include <unistd.h>\r
-#include <errno.h>\r
-#include <fcntl.h>\r
-\r
-#include <comstack.h>\r
-#include <tcpip.h>\r
-\r
-#ifndef WINDOWS\r
-#include <sys/time.h>\r
-#endif\r
-\r
-int tcpip_close(COMSTACK h);\r
-int tcpip_put(COMSTACK h, char *buf, int size);\r
-int tcpip_get(COMSTACK h, char **buf, int *bufsize);\r
-int tcpip_connect(COMSTACK h, void *address);\r
-int tcpip_more(COMSTACK h);\r
-int tcpip_rcvconnect(COMSTACK h);\r
-int tcpip_bind(COMSTACK h, void *address, int mode);\r
-int tcpip_listen(COMSTACK h, char *addrp, int *addrlen);\r
-COMSTACK tcpip_accept(COMSTACK h);\r
-\r
-int completeBER(unsigned char *buf, int len);\r
-\r
-#ifdef TRACE_TCPIP\r
-#define TRC(x) x\r
-#else\r
-#define TRC(X)\r
-#endif\r
-\r
-static int initialized = 0;\r
-\r
-typedef struct tcpip_state\r
-{\r
- char *altbuf; /* alternate buffer for surplus data */\r
- int altsize; /* size as malloced */\r
- int altlen; /* length of data or 0 if none */\r
-\r
- int written; /* -1 if we aren't writing */\r
- int towrite; /* to verify against user input */\r
-} tcpip_state;\r
-\r
-COMSTACK MDF tcpip_type(int blocking, int protocol)\r
-{\r
- COMSTACK p;\r
- tcpip_state *state;\r
- int s;\r
-#ifdef WINDOWS\r
- unsigned long tru = 1;\r
-#else\r
- struct protoent *proto;\r
-#endif\r
-\r
- if (!initialized)\r
- {\r
-#ifdef WINDOWS\r
- WORD requested;\r
- WSADATA wd;\r
-\r
- requested = MAKEWORD(1, 1);\r
- if (WSAStartup(requested, &wd))\r
- return 0;\r
-#endif\r
- initialized = 1;\r
- }\r
-\r
-#ifndef WINDOWS\r
- if (!(proto = getprotobyname("tcp")))\r
- return 0;\r
- if ((s = socket(AF_INET, SOCK_STREAM, proto->p_proto)) < 0)\r
-#else\r
- if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)\r
-#endif\r
- return 0;\r
- if (!(p = malloc(sizeof(struct comstack))))\r
- return 0;\r
- if (!(state = p->private = malloc(sizeof(tcpip_state))))\r
- return 0;\r
-#ifdef WINDOWS\r
- if (!(p->blocking = blocking) && ioctlsocket(s, FIONBIO, &tru) < 0)\r
-#else\r
- if (!(p->blocking = blocking) && fcntl(s, F_SETFL, O_NONBLOCK) < 0)\r
-#endif\r
- return 0;\r
- p->iofile = s;\r
- p->type = tcpip_type;\r
- p->protocol = protocol;\r
-\r
- p->f_connect = tcpip_connect;\r
- p->f_rcvconnect = tcpip_rcvconnect;\r
- p->f_get = tcpip_get;\r
- p->f_put = tcpip_put;\r
- p->f_close = tcpip_close;\r
- p->f_more = tcpip_more;\r
- p->f_bind = tcpip_bind;\r
- p->f_listen = tcpip_listen;\r
- p->f_accept = tcpip_accept;\r
-\r
- p->state = CS_UNBND;\r
- p->event = CS_NONE;\r
- p->cerrno = 0;\r
- p->stackerr = 0;\r
-\r
- state->altbuf = 0;\r
- state->altsize = state->altlen = 0;\r
- state->towrite = state->written = -1;\r
-\r
- p->timeout = COMSTACK_DEFAULT_TIMEOUT;\r
- TRC(fprintf(stderr, "Created new TCPIP comstack\n"));\r
-\r
- return p;\r
-}\r
-\r
-struct sockaddr_in MDF *tcpip_strtoaddr(const char *str)\r
-{\r
- static struct sockaddr_in add;\r
- struct hostent *hp;\r
- char *p, buf[512];\r
- short int port = 210;\r
- unsigned tmpadd;\r
-\r
- TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));\r
- add.sin_family = AF_INET;\r
- strcpy(buf, str);\r
- if ((p = strchr(buf, ':')))\r
- {\r
- *p = 0;\r
- port = atoi(p + 1);\r
- }\r
- add.sin_port = htons(port);\r
- if (!strcmp("@", buf))\r
- add.sin_addr.s_addr = INADDR_ANY;\r
- else if ((hp = gethostbyname(buf)))\r
- memcpy(&add.sin_addr.s_addr, *hp->h_addr_list, sizeof(struct in_addr));\r
- else if ((tmpadd = (unsigned) inet_addr(buf)) != 0)\r
- memcpy(&add.sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));\r
- else\r
- return 0;\r
- return &add;\r
-}\r
-\r
-int tcpip_more(COMSTACK h)\r
-{\r
- tcpip_state *sp = h->private;\r
-\r
- return sp->altlen && completeBER((unsigned char *) sp->altbuf, sp->altlen);\r
-}\r
-\r
-/*\r
- * connect(2) will block (sometimes) - nothing we can do short of doing\r
- * weird things like spawning subprocesses or threading or some weird junk\r
- * like that.\r
- */\r
-int tcpip_connect(COMSTACK h, void *address)\r
-{\r
- struct sockaddr_in *add = address;\r
-\r
- TRC(fprintf(stderr, "tcpip_connect\n"));\r
- if (connect(h->iofile, (struct sockaddr *) add, sizeof(*add)) < 0)\r
- {\r
-#ifdef WINDOWS\r
- if (WSAGetLastError() == WSAEWOULDBLOCK)\r
-#else\r
- if (errno == EINPROGRESS)\r
-#endif\r
- return 1;\r
- return -1;\r
- }\r
- h->state = CS_DATAXFER;\r
- return 0;\r
-}\r
-\r
-/*\r
- * nop\r
- */\r
-int tcpip_rcvconnect(COMSTACK h)\r
-{\r
- TRC(fprintf(stderr, "tcpip_rcvconnect\n"));\r
- return 0;\r
-}\r
-\r
-int tcpip_bind(COMSTACK h, void *address, int mode)\r
-{\r
- struct sockaddr *addr = address;\r
- unsigned long one = 1;\r
-\r
- TRC(fprintf(stderr, "tcpip_bind\n"));\r
- if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)\r
- {\r
- h->cerrno = CSYSERR;\r
- return -1;\r
- }\r
- if (bind(h->iofile, addr, sizeof(struct sockaddr_in)) < 0)\r
- {\r
- h->cerrno = CSYSERR;\r
- return -1;\r
- }\r
- if (mode == CS_SERVER && listen(h->iofile, 3) < 0)\r
- {\r
- h->cerrno = CSYSERR;\r
- return -1;\r
- }\r
- h->state = CS_IDLE;\r
- return 0;\r
-}\r
-\r
-int tcpip_listen(COMSTACK h, char *raddr, int *addrlen)\r
-{\r
- struct sockaddr_in addr;\r
- int len = sizeof(addr);\r
-\r
- TRC(fprintf(stderr, "tcpip_listen\n"));\r
- if (h->state != CS_IDLE)\r
- {\r
- h->cerrno = CSOUTSTATE;\r
- return -1;\r
- }\r
- if ((h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len)) < 0)\r
- {\r
-#ifdef WINDOWS\r
- if (WSAGetLastError() == WSAEWOULDBLOCK)\r
-#else\r
- if (errno == EWOULDBLOCK)\r
-#endif\r
-\r
- h->cerrno = CSNODATA;\r
- else\r
- h->cerrno = CSYSERR;\r
- return -1;\r
- }\r
- if (addrlen && *addrlen > sizeof(struct sockaddr_in))\r
- memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));\r
- else if (addrlen)\r
- *addrlen = 0;\r
- h->state = CS_INCON;\r
- return 0;\r
-}\r
-\r
-COMSTACK tcpip_accept(COMSTACK h)\r
-{\r
- COMSTACK new;\r
- tcpip_state *state;\r
-#ifdef WINDOWS\r
- unsigned long tru = 1;\r
-#endif\r
-\r
- TRC(fprintf(stderr, "tcpip_accept\n"));\r
- if (h->state != CS_INCON)\r
- {\r
- h->cerrno = CSOUTSTATE;\r
- return 0;\r
- }\r
- if (!(new = malloc(sizeof(*new))))\r
- {\r
- h->cerrno = CSYSERR;\r
- return 0;\r
- }\r
- memcpy(new, h, sizeof(*h));\r
- new->iofile = h->newfd;\r
- if (!(state = new->private = malloc(sizeof(tcpip_state))))\r
- {\r
- h->cerrno = CSYSERR;\r
- return 0;\r
- }\r
-#ifdef WINDOWS\r
- if (!new->blocking && ioctlsocket(new->iofile, FIONBIO, &tru) < 0)\r
-#else\r
- if (!new->blocking && fcntl(new->iofile, F_SETFL, O_NONBLOCK) < 0)\r
-#endif\r
- return 0;\r
- state->altbuf = 0;\r
- state->altsize = state->altlen = 0;\r
- state->towrite = state->written = -1;\r
- new->state = CS_DATAXFER;\r
- h->state = CS_IDLE;\r
- return new;\r
-}\r
-\r
-#define CS_TCPIP_BUFCHUNK 4096\r
-\r
-/*\r
- * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,\r
- * 0=connection closed.\r
- */\r
-int tcpip_get(COMSTACK h, char **buf, int *bufsize)\r
-{\r
- tcpip_state *sp = h->private;\r
- char *tmpc;\r
- int tmpi, berlen, rest, req, tomove;\r
- int hasread = 0, res;\r
-\r
- TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));\r
- if (sp->altlen) /* switch buffers */\r
- {\r
- TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,\r
- (unsigned) sp->altbuf));\r
- tmpc = *buf;\r
- tmpi = *bufsize;\r
- *buf = sp->altbuf;\r
- *bufsize = sp->altsize;\r
- hasread = sp->altlen;\r
- sp->altlen = 0;\r
- sp->altbuf = tmpc;\r
- sp->altsize = tmpi;\r
- }\r
- while (!(berlen = completeBER((unsigned char *)*buf, hasread)))\r
- {\r
- if (!*bufsize)\r
- {\r
- if (!(*buf = malloc(*bufsize = CS_TCPIP_BUFCHUNK)))\r
- return -1;\r
- }\r
- else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)\r
- if (!(*buf = realloc(*buf, *bufsize *= 2)))\r
- return -1;\r
- if ((res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0)) < 0)\r
-#ifdef WINDOWS\r
- if (WSAGetLastError() == WSAEWOULDBLOCK)\r
-#else\r
- if (errno == EWOULDBLOCK)\r
-#endif\r
- break;\r
- else\r
- return -1;\r
- if (!res)\r
- return 0;\r
- hasread += res;\r
- TRC(fprintf(stderr, " res=%d, hasread=%d\n", res, hasread));\r
- }\r
- TRC(fprintf(stderr, " Out of read loop with hasread=%d, berlen=%d\n",\r
- hasread, berlen));\r
- /* move surplus buffer (or everything if we didn't get a BER rec.) */\r
- if (hasread > berlen)\r
- {\r
- tomove = req = hasread - berlen;\r
- rest = tomove % CS_TCPIP_BUFCHUNK;\r
- if (rest)\r
- req += CS_TCPIP_BUFCHUNK - rest;\r
- if (!sp->altbuf)\r
- {\r
- if (!(sp->altbuf = malloc(sp->altsize = req)))\r
- return -1;\r
- } else if (sp->altsize < req)\r
- if (!(sp->altbuf = realloc(sp->altbuf, sp->altsize = req)))\r
- return -1;\r
- TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,\r
- (unsigned) sp->altbuf));\r
- memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);\r
- }\r
- if (berlen < CS_TCPIP_BUFCHUNK - 1)\r
- *(*buf + berlen) = '\0';\r
- return berlen ? berlen : 1;\r
-}\r
-\r
-/*\r
- * Returns 1, 0 or -1\r
- * In nonblocking mode, you must call again with same buffer while\r
- * return value is 1.\r
- */\r
-int tcpip_put(COMSTACK h, char *buf, int size)\r
-{\r
- int res;\r
- struct tcpip_state *state = h->private;\r
-\r
- TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));\r
- if (state->towrite < 0)\r
- {\r
- state->towrite = size;\r
- state->written = 0;\r
- }\r
- else if (state->towrite != size)\r
- {\r
- h->cerrno = CSWRONGBUF;\r
- return -1;\r
- }\r
- while (state->towrite > state->written)\r
- {\r
- if ((res = send(h->iofile, buf + state->written, size -\r
- state->written, 0)) < 0)\r
- {\r
-#ifdef WINDOWS\r
- if (WSAGetLastError() == WSAEWOULDBLOCK)\r
-#else\r
- if (errno == EAGAIN)\r
-#endif\r
- {\r
- TRC(fprintf(stderr, " Flow control stop\n"));\r
- return 1;\r
- }\r
- h->cerrno = CSYSERR;\r
- return -1;\r
- }\r
- state->written += res;\r
- TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",\r
- res, state->written, size));\r
- }\r
- state->towrite = state->written = -1;\r
- TRC(fprintf(stderr, " Ok\n"));\r
- return 0;\r
-}\r
-\r
-int tcpip_close(COMSTACK h)\r
-{\r
- tcpip_state *sp = h->private;\r
-\r
- TRC(fprintf(stderr, "tcpip_close\n"));\r
- close(h->iofile);\r
- if (sp->altbuf)\r
- free(sp->altbuf);\r
- free(sp);\r
- free(h);\r
- return 0;\r
-}\r
+ *
+ * Revision 1.4 1995/09/28 10:12:26 quinn
+ * Windows-support changes
+ *
+ * Revision 1.3 1995/09/27 15:02:45 quinn
+ * Modified function heads & prototypes.
+ *
+ * Revision 1.2 1995/06/15 12:30:06 quinn
+ * Added @ as hostname alias for INADDR ANY.
+ *
+ * Revision 1.1 1995/06/14 09:58:20 quinn
+ * Renamed yazlib to comstack.
+ *
+ * Revision 1.20 1995/05/16 08:51:16 quinn
+ * License, documentation, and memory fixes
+ *
+ * Revision 1.19 1995/04/10 10:24:08 quinn
+ * Some bug-fixes.
+ *
+ * Revision 1.18 1995/03/30 13:29:27 quinn
+ * Added REUSEADDR in tcpip_bind
+ *
+ * Revision 1.17 1995/03/27 08:36:10 quinn
+ * Some work on nonblocking operation in xmosi.c and rfct.c.
+ * Added protocol parameter to cs_create()
+ *
+ * Revision 1.16 1995/03/21 15:53:41 quinn
+ * Added rcvconnect
+ *
+ * Revision 1.15 1995/03/21 12:31:27 quinn
+ * Added check for EINPROGRESS on connect.
+ *
+ * Revision 1.14 1995/03/20 09:47:21 quinn
+ * Added server-side support to xmosi.c
+ * Fixed possible problems in rfct
+ * Other little mods
+ *
+ * Revision 1.13 1995/03/15 16:15:13 adam
+ * Removed p_write.
+ *
+ * Revision 1.12 1995/03/15 15:36:27 quinn
+ * Mods to support nonblocking I/O
+ *
+ * Revision 1.11 1995/03/15 08:37:57 quinn
+ * Now we're pretty much set for nonblocking I/O.
+ *
+ * Revision 1.10 1995/03/14 17:00:07 quinn
+ * Bug-fixes - added tracing info to tcpip.c
+ *
+ * Revision 1.9 1995/03/14 10:28:42 quinn
+ * Adding server-side support to tcpip.c and fixing bugs in nonblocking I/O
+ *
+ * Revision 1.8 1995/03/10 14:22:50 quinn
+ * Removed debug output.
+ *
+ * Revision 1.7 1995/03/10 11:44:59 quinn
+ * Fixes and debugging
+ *
+ * Revision 1.6 1995/03/07 10:26:55 quinn
+ * Initialized type field in the comstacks.
+ *
+ * Revision 1.5 1995/02/14 20:40:07 quinn
+ * Various stuff.
+ *
+ * Revision 1.4 1995/02/14 11:54:49 quinn
+ * Beginning to add full CCL.
+ *
+ * Revision 1.3 1995/02/10 18:58:10 quinn
+ * Fixed tcpip_get (formerly tcpip_read).
+ * Turned tst (cli) into a proper, event-driven thingy.
+ *
+ * Revision 1.2 1995/02/10 15:55:47 quinn
+ * Small things.
+ *
+ * Revision 1.1 1995/02/09 15:51:52 quinn
+ * Works better now.
+ *
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#ifndef WIN32
+#include <unistd.h>
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#if HAVE_OPENSSL_SSL_H
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#endif
+
+#include <yaz/comstack.h>
+#include <yaz/tcpip.h>
+#include <yaz/log.h>
+
+/* Chas added the following, so we get the definition of completeBER */
+#include <yaz/odr.h>
+
+int tcpip_close(COMSTACK h);
+int tcpip_put(COMSTACK h, char *buf, int size);
+int tcpip_get(COMSTACK h, char **buf, int *bufsize);
+int tcpip_connect(COMSTACK h, void *address);
+int tcpip_more(COMSTACK h);
+int tcpip_rcvconnect(COMSTACK h);
+int tcpip_bind(COMSTACK h, void *address, int mode);
+int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
+ int (*check_ip)(void *cd, const char *a, int len, int type),
+ void *cd);
+int static tcpip_set_blocking(COMSTACK p, int blocking);
+
+#if HAVE_OPENSSL_SSL_H
+int ssl_get(COMSTACK h, char **buf, int *bufsize);
+int ssl_put(COMSTACK h, char *buf, int size);
+#endif
+
+COMSTACK tcpip_accept(COMSTACK h);
+char *tcpip_addrstr(COMSTACK h);
+void *tcpip_straddr(COMSTACK h, const char *str);
+
+#if 0
+#define TRC(x) x
+#else
+#define TRC(X)
+#endif
+
+/* this state is used for both SSL and straight TCP/IP */
+typedef struct tcpip_state
+{
+ char *altbuf; /* alternate buffer for surplus data */
+ int altsize; /* size as xmalloced */
+ int altlen; /* length of data or 0 if none */
+
+ int written; /* -1 if we aren't writing */
+ int towrite; /* to verify against user input */
+ int (*complete)(const unsigned char *buf, int len); /* length/comple. */
+ struct sockaddr_in addr; /* returned by cs_straddr */
+ char buf[128]; /* returned by cs_addrstr */
+#if HAVE_OPENSSL_SSL_H
+ SSL_CTX *ctx;
+ SSL_CTX *ctx_alloc;
+ SSL *ssl;
+#endif
+} tcpip_state;
+
+#ifdef WIN32
+static int tcpip_init (void)
+{
+ static int initialized = 0;
+ if (!initialized)
+ {
+ WORD requested;
+ WSADATA wd;
+
+ requested = MAKEWORD(1, 1);
+ if (WSAStartup(requested, &wd))
+ return 0;
+ initialized = 1;
+ }
+ return 1;
+}
+#else
+static int proto_number = 0;
+
+static int tcpip_init (void)
+{
+ struct protoent *proto;
+ /* only call getprotobyname once, in case it allocates memory */
+ if (!(proto = getprotobyname("tcp")))
+ return 0;
+ proto_number = proto->p_proto;
+ return 1;
+}
+#endif
+
+/*
+ * This function is always called through the cs_create() macro.
+ * s >= 0: socket has already been established for us.
+ */
+COMSTACK tcpip_type(int s, int blocking, int protocol, void *vp)
+{
+ COMSTACK p;
+ tcpip_state *state;
+ int new_socket;
+#ifdef WIN32
+ unsigned long tru = 1;
+#endif
+
+ if (!tcpip_init ())
+ return 0;
+ if (s < 0)
+ {
+#ifdef WIN32
+ if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ return 0;
+#else
+ if ((s = socket(AF_INET, SOCK_STREAM, proto_number)) < 0)
+ return 0;
+#endif
+ new_socket = 1;
+ }
+ else
+ new_socket = 0;
+ if (!(p = (struct comstack *)xmalloc(sizeof(struct comstack))))
+ return 0;
+ if (!(state = (struct tcpip_state *)(p->cprivate =
+ xmalloc(sizeof(tcpip_state)))))
+ return 0;
+
+#ifdef WIN32
+ if (!(p->blocking = blocking) && ioctlsocket(s, FIONBIO, &tru) < 0)
+#else
+ if (!(p->blocking = blocking) && fcntl(s, F_SETFL, O_NONBLOCK) < 0)
+#endif
+ return 0;
+
+ p->io_pending = 0;
+ p->iofile = s;
+ p->type = tcpip_type;
+ p->protocol = (enum oid_proto) protocol;
+
+ p->f_connect = tcpip_connect;
+ p->f_rcvconnect = tcpip_rcvconnect;
+ p->f_get = tcpip_get;
+ p->f_put = tcpip_put;
+ p->f_close = tcpip_close;
+ p->f_more = tcpip_more;
+ p->f_bind = tcpip_bind;
+ p->f_listen = tcpip_listen;
+ p->f_accept = tcpip_accept;
+ p->f_addrstr = tcpip_addrstr;
+ p->f_straddr = tcpip_straddr;
+ p->f_set_blocking = tcpip_set_blocking;
+
+ p->state = new_socket ? CS_UNBND : CS_IDLE; /* state of line */
+ p->event = CS_NONE;
+ p->cerrno = 0;
+ p->stackerr = 0;
+
+#if HAVE_OPENSSL_SSL_H
+ state->ctx = state->ctx_alloc = 0;
+ state->ssl = 0;
+#endif
+
+ state->altbuf = 0;
+ state->altsize = state->altlen = 0;
+ state->towrite = state->written = -1;
+ if (protocol == PROTO_WAIS)
+ state->complete = completeWAIS;
+ else
+ state->complete = completeBER;
+
+ p->timeout = COMSTACK_DEFAULT_TIMEOUT;
+ TRC(fprintf(stderr, "Created new TCPIP comstack\n"));
+
+ return p;
+}
+
+#if HAVE_OPENSSL_SSL_H
+
+COMSTACK ssl_type(int s, int blocking, int protocol, void *vp)
+{
+ tcpip_state *state;
+ COMSTACK p;
+ yaz_log(LOG_LOG, "ssl_type begin");
+
+ p = tcpip_type (s, blocking, protocol, 0);
+ if (!p)
+ return 0;
+ p->f_get = ssl_get;
+ p->f_put = ssl_put;
+ p->type = ssl_type;
+ state = (tcpip_state *) p->cprivate;
+ if (vp)
+ state->ctx = vp;
+ else
+ {
+ SSL_load_error_strings();
+ SSLeay_add_all_algorithms();
+
+ state->ctx = state->ctx_alloc = SSL_CTX_new (SSLv23_method());
+ if (!state->ctx)
+ {
+ tcpip_close(p);
+ return 0;
+ }
+ }
+ /* note: we don't handle already opened socket in SSL mode - yet */
+ yaz_log(LOG_LOG, "ssl_type end");
+ return p;
+}
+#endif
+
+int tcpip_strtoaddr_ex(const char *str, struct sockaddr_in *add)
+{
+ struct hostent *hp;
+ char *p, buf[512];
+ short int port = 210;
+ unsigned tmpadd;
+
+ if (!tcpip_init ())
+ return 0;
+ TRC(fprintf(stderr, "tcpip_strtoaddress: %s\n", str ? str : "NULL"));
+ add->sin_family = AF_INET;
+ strncpy(buf, str, 511);
+ buf[511] = 0;
+ if ((p = strchr(buf, '/')))
+ *p = 0;
+ if ((p = strchr(buf, ':')))
+ {
+ *p = 0;
+ port = atoi(p + 1);
+ }
+ add->sin_port = htons(port);
+ if (!strcmp("@", buf))
+ add->sin_addr.s_addr = INADDR_ANY;
+ else if ((hp = gethostbyname(buf)))
+ memcpy(&add->sin_addr.s_addr, *hp->h_addr_list,
+ sizeof(struct in_addr));
+ else if ((tmpadd = (unsigned) inet_addr(buf)) != 0)
+ memcpy(&add->sin_addr.s_addr, &tmpadd, sizeof(struct in_addr));
+ else
+ return 0;
+ return 1;
+}
+
+void *tcpip_straddr(COMSTACK h, const char *str)
+{
+ tcpip_state *sp = (tcpip_state *)h->cprivate;
+
+ if (!tcpip_strtoaddr_ex (str, &sp->addr))
+ return 0;
+ return &sp->addr;
+}
+
+struct sockaddr_in *tcpip_strtoaddr(const char *str)
+{
+ static struct sockaddr_in add;
+
+ if (!tcpip_strtoaddr_ex (str, &add))
+ return 0;
+ return &add;
+}
+
+int tcpip_more(COMSTACK h)
+{
+ tcpip_state *sp = (tcpip_state *)h->cprivate;
+
+ return sp->altlen && (*sp->complete)((unsigned char *) sp->altbuf,
+ sp->altlen);
+}
+
+/*
+ * connect(2) will block (sometimes) - nothing we can do short of doing
+ * weird things like spawning subprocesses or threading or some weird junk
+ * like that.
+ */
+int tcpip_connect(COMSTACK h, void *address)
+{
+ struct sockaddr_in *add = (struct sockaddr_in *)address;
+#if HAVE_OPENSSL_SSL_H
+ tcpip_state *sp = (tcpip_state *)h->cprivate;
+#endif
+ int r;
+
+ TRC(fprintf(stderr, "tcpip_connect\n"));
+ h->io_pending = 0;
+ if (h->state == CS_UNBND)
+ {
+ r = connect(h->iofile, (struct sockaddr *) add, sizeof(*add));
+ if (r < 0)
+ {
+#ifdef WIN32
+ if (WSAGetLastError() == WSAEWOULDBLOCK)
+ {
+ h->state = CS_CONNECTING;
+ h->io_pending = CS_WANT_WRITE;
+ return 1;
+ }
+#else
+ if (errno == EINPROGRESS)
+ {
+ h->state = CS_CONNECTING;
+ h->io_pending = CS_WANT_WRITE|CS_WANT_READ;
+ return 1;
+ }
+#endif
+ h->cerrno = CSYSERR;
+ return -1;
+ }
+ h->state = CS_CONNECTING;
+ }
+ if (h->state != CS_CONNECTING)
+ {
+ h->cerrno = CSOUTSTATE;
+ return -1;
+ }
+#if HAVE_OPENSSL_SSL_H
+ if (sp->ctx)
+ {
+ int res;
+
+ if (!sp->ssl)
+ {
+ sp->ssl = SSL_new (sp->ctx);
+ SSL_set_fd (sp->ssl, h->iofile);
+ }
+ res = SSL_connect (sp->ssl);
+ if (res <= 0)
+ {
+ int err = SSL_get_error(sp->ssl, res);
+ if (err == SSL_ERROR_WANT_READ)
+ {
+ yaz_log (LOG_LOG, "SSL_connect. want_read");
+ h->io_pending = CS_WANT_READ;
+ return 1;
+ }
+ if (err == SSL_ERROR_WANT_WRITE)
+ {
+ yaz_log (LOG_LOG, "SSL_connect. want_write");
+ h->io_pending = CS_WANT_WRITE;
+ return 1;
+ }
+ h->cerrno = CSERRORSSL;
+ return -1;
+ }
+ }
+#endif
+ h->state = CS_DATAXFER;
+ return 0;
+}
+
+/*
+ * nop
+ */
+int tcpip_rcvconnect(COMSTACK h)
+{
+ TRC(fprintf(stderr, "tcpip_rcvconnect\n"));
+ return 0;
+}
+
+#define CERTF "ztest.pem"
+#define KEYF "ztest.pem"
+
+int tcpip_bind(COMSTACK h, void *address, int mode)
+{
+ struct sockaddr *addr = (struct sockaddr *)address;
+#ifdef WIN32
+ BOOL one = 1;
+#else
+ unsigned long one = 1;
+#endif
+
+#if HAVE_OPENSSL_SSL_H
+ tcpip_state *sp = (tcpip_state *)h->cprivate;
+ if (sp->ctx)
+ {
+ if (sp->ctx_alloc)
+ {
+ int res;
+ res = SSL_CTX_use_certificate_file (sp->ctx, CERTF,
+ SSL_FILETYPE_PEM);
+ if (res <= 0)
+ {
+ ERR_print_errors_fp(stderr);
+ exit (2);
+ }
+ res = SSL_CTX_use_PrivateKey_file (sp->ctx, KEYF,
+ SSL_FILETYPE_PEM);
+ if (res <= 0)
+ {
+ ERR_print_errors_fp(stderr);
+ exit (3);
+ }
+ res = SSL_CTX_check_private_key (sp->ctx);
+ if (res <= 0)
+ {
+ ERR_print_errors_fp(stderr);
+ exit(5);
+ }
+ }
+ TRC (fprintf (stderr, "ssl_bind\n"));
+ }
+ else
+ {
+ TRC (fprintf (stderr, "tcpip_bind\n"));
+ }
+#else
+ TRC (fprintf (stderr, "tcpip_bind\n"));
+#endif
+ if (setsockopt(h->iofile, SOL_SOCKET, SO_REUSEADDR, (char*)
+ &one, sizeof(one)) < 0)
+ {
+ h->cerrno = CSYSERR;
+ return -1;
+ }
+ if (bind(h->iofile, addr, sizeof(struct sockaddr_in)) < 0)
+ {
+ h->cerrno = CSYSERR;
+ return -1;
+ }
+ if (mode == CS_SERVER && listen(h->iofile, 3) < 0)
+ {
+ h->cerrno = CSYSERR;
+ return -1;
+ }
+ h->state = CS_IDLE;
+ return 0;
+}
+
+int tcpip_listen(COMSTACK h, char *raddr, int *addrlen,
+ int (*check_ip)(void *cd, const char *a, int len, int t),
+ void *cd)
+{
+ struct sockaddr_in addr;
+#ifdef __cplusplus
+ socklen_t len = sizeof(addr);
+#else
+ int len = sizeof(addr);
+#endif
+
+ TRC(fprintf(stderr, "tcpip_listen pid=%d\n", getpid()));
+ if (h->state != CS_IDLE)
+ {
+ h->cerrno = CSOUTSTATE;
+ return -1;
+ }
+ h->newfd = accept(h->iofile, (struct sockaddr*)&addr, &len);
+ if (h->newfd < 0)
+ {
+ if (
+#ifdef WIN32
+ WSAGetLastError() == WSAEWOULDBLOCK
+#else
+ errno == EWOULDBLOCK
+#endif
+ )
+ h->cerrno = CSNODATA;
+ else
+ h->cerrno = CSYSERR;
+ return -1;
+ }
+ if (addrlen && (size_t) (*addrlen) >= sizeof(struct sockaddr_in))
+ memcpy(raddr, &addr, *addrlen = sizeof(struct sockaddr_in));
+ else if (addrlen)
+ *addrlen = 0;
+ if (check_ip && (*check_ip)(cd, (const char *) &addr,
+ sizeof(addr), AF_INET))
+ {
+ h->cerrno = CSDENY;
+#ifdef WIN32
+ closesocket(h->newfd);
+#else
+ close(h->newfd);
+#endif
+ h->newfd = -1;
+ return -1;
+ }
+ h->state = CS_INCON;
+ return 0;
+}
+
+COMSTACK tcpip_accept(COMSTACK h)
+{
+ COMSTACK cnew;
+ tcpip_state *state, *st = (tcpip_state *)h->cprivate;
+#ifdef WIN32
+ unsigned long tru = 1;
+#endif
+
+ TRC(fprintf(stderr, "tcpip_accept\n"));
+ if (h->state == CS_INCON)
+ {
+ if (!(cnew = (COMSTACK)xmalloc(sizeof(*cnew))))
+ {
+ h->cerrno = CSYSERR;
+#ifdef WIN32
+ closesocket(h->newfd);
+#else
+ close(h->newfd);
+#endif
+ h->newfd = -1;
+ return 0;
+ }
+ memcpy(cnew, h, sizeof(*h));
+ cnew->iofile = h->newfd;
+ cnew->io_pending = 0;
+ if (!(state = (tcpip_state *)
+ (cnew->cprivate = xmalloc(sizeof(tcpip_state)))))
+ {
+ h->cerrno = CSYSERR;
+ if (h->newfd != -1)
+ {
+#ifdef WIN32
+ closesocket(h->newfd);
+#else
+ close(h->newfd);
+#endif
+ h->newfd = -1;
+ }
+ return 0;
+ }
+ if (!cnew->blocking &&
+#ifdef WIN32
+ (ioctlsocket(cnew->iofile, FIONBIO, &tru) < 0)
+#else
+ (!cnew->blocking && fcntl(cnew->iofile, F_SETFL, O_NONBLOCK) < 0)
+#endif
+ )
+ {
+ h->cerrno = CSYSERR;
+ if (h->newfd != -1)
+ {
+#ifdef WIN32
+ closesocket(h->newfd);
+#else
+ close(h->newfd);
+#endif
+ h->newfd = -1;
+ }
+ xfree (cnew);
+ xfree (state);
+ return 0;
+ }
+ h->newfd = -1;
+ state->altbuf = 0;
+ state->altsize = state->altlen = 0;
+ state->towrite = state->written = -1;
+ state->complete = st->complete;
+ cnew->state = CS_ACCEPT;
+ h->state = CS_IDLE;
+
+#if HAVE_OPENSSL_SSL_H
+ state->ctx = st->ctx;
+ state->ctx_alloc = 0;
+ state->ssl = st->ssl;
+ if (state->ctx)
+ {
+ state->ssl = SSL_new (state->ctx);
+ SSL_set_fd (state->ssl, cnew->iofile);
+ }
+#endif
+ h = cnew;
+ }
+ if (h->state == CS_ACCEPT)
+ {
+#if HAVE_OPENSSL_SSL_H
+ tcpip_state *state = (tcpip_state *)h->cprivate;
+ if (state->ctx)
+ {
+ int res = SSL_accept (state->ssl);
+ TRC(fprintf(stderr, "SSL_accept\n"));
+ if (res <= 0)
+ {
+ int err = SSL_get_error(state->ssl, res);
+ if (err == SSL_ERROR_WANT_READ)
+ {
+ h->io_pending = CS_WANT_READ;
+ yaz_log (LOG_LOG, "SSL_accept. want_read");
+ return h;
+ }
+ if (err == SSL_ERROR_WANT_WRITE)
+ {
+ h->io_pending = CS_WANT_WRITE;
+ yaz_log (LOG_LOG, "SSL_accept. want_write");
+ return h;
+ }
+ cs_close (h);
+ return 0;
+ }
+ }
+#endif
+ }
+ else
+ {
+ h->cerrno = CSOUTSTATE;
+ return 0;
+ }
+ h->io_pending = 0;
+ h->state = CS_DATAXFER;
+ return h;
+}
+
+#define CS_TCPIP_BUFCHUNK 4096
+
+/*
+ * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
+ * 0=connection closed.
+ */
+int tcpip_get(COMSTACK h, char **buf, int *bufsize)
+{
+ tcpip_state *sp = (tcpip_state *)h->cprivate;
+ char *tmpc;
+ int tmpi, berlen, rest, req, tomove;
+ int hasread = 0, res;
+
+ TRC(fprintf(stderr, "tcpip_get: bufsize=%d\n", *bufsize));
+ if (sp->altlen) /* switch buffers */
+ {
+ TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
+ (unsigned) sp->altbuf));
+ tmpc = *buf;
+ tmpi = *bufsize;
+ *buf = sp->altbuf;
+ *bufsize = sp->altsize;
+ hasread = sp->altlen;
+ sp->altlen = 0;
+ sp->altbuf = tmpc;
+ sp->altsize = tmpi;
+ }
+ h->io_pending = 0;
+ while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
+ {
+ if (!*bufsize)
+ {
+ if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
+ return -1;
+ }
+ else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
+ if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
+ return -1;
+ res = recv(h->iofile, *buf + hasread, CS_TCPIP_BUFCHUNK, 0);
+ TRC(fprintf(stderr, " recv res=%d, hasread=%d\n", res, hasread));
+ if (res < 0)
+ {
+#ifdef WIN32
+ if (WSAGetLastError() == WSAEWOULDBLOCK)
+ {
+ h->io_pending = CS_WANT_READ;
+ break;
+ }
+ else
+ return -1;
+#else
+ if (errno == EWOULDBLOCK
+#ifdef EINPROGRESS
+ || errno == EINPROGRESS
+#endif
+ )
+ {
+ h->io_pending = CS_WANT_READ;
+ break;
+ }
+ else if (errno == 0)
+ continue;
+ else
+ return -1;
+#endif
+ }
+ else if (!res)
+ return 0;
+ hasread += res;
+ }
+ TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
+ hasread, berlen));
+ /* move surplus buffer (or everything if we didn't get a BER rec.) */
+ if (hasread > berlen)
+ {
+ tomove = req = hasread - berlen;
+ rest = tomove % CS_TCPIP_BUFCHUNK;
+ if (rest)
+ req += CS_TCPIP_BUFCHUNK - rest;
+ if (!sp->altbuf)
+ {
+ if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
+ return -1;
+ } else if (sp->altsize < req)
+ if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
+ return -1;
+ TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
+ (unsigned) sp->altbuf));
+ memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
+ }
+ if (berlen < CS_TCPIP_BUFCHUNK - 1)
+ *(*buf + berlen) = '\0';
+ return berlen ? berlen : 1;
+}
+
+
+#if HAVE_OPENSSL_SSL_H
+/*
+ * Return: -1 error, >1 good, len of buffer, ==1 incomplete buffer,
+ * 0=connection closed.
+ */
+int ssl_get(COMSTACK h, char **buf, int *bufsize)
+{
+ tcpip_state *sp = (tcpip_state *)h->cprivate;
+ char *tmpc;
+ int tmpi, berlen, rest, req, tomove;
+ int hasread = 0, res;
+
+ TRC(fprintf(stderr, "ssl_get: bufsize=%d\n", *bufsize));
+ if (sp->altlen) /* switch buffers */
+ {
+ TRC(fprintf(stderr, " %d bytes in altbuf (0x%x)\n", sp->altlen,
+ (unsigned) sp->altbuf));
+ tmpc = *buf;
+ tmpi = *bufsize;
+ *buf = sp->altbuf;
+ *bufsize = sp->altsize;
+ hasread = sp->altlen;
+ sp->altlen = 0;
+ sp->altbuf = tmpc;
+ sp->altsize = tmpi;
+ }
+ h->io_pending = 0;
+ while (!(berlen = (*sp->complete)((unsigned char *)*buf, hasread)))
+ {
+ if (!*bufsize)
+ {
+ if (!(*buf = (char *)xmalloc(*bufsize = CS_TCPIP_BUFCHUNK)))
+ return -1;
+ }
+ else if (*bufsize - hasread < CS_TCPIP_BUFCHUNK)
+ if (!(*buf =(char *)xrealloc(*buf, *bufsize *= 2)))
+ return -1;
+ res = SSL_read (sp->ssl, *buf + hasread, CS_TCPIP_BUFCHUNK);
+ TRC(fprintf(stderr, " SSL_read res=%d, hasread=%d\n", res, hasread));
+ if (res <= 0)
+ {
+ int ssl_err = SSL_get_error(sp->ssl, res);
+ if (ssl_err == SSL_ERROR_WANT_READ)
+ {
+ h->io_pending = CS_WANT_READ;
+ yaz_log (LOG_LOG, "SSL_read. want_read");
+ break;
+ }
+ if (ssl_err == SSL_ERROR_WANT_WRITE)
+ {
+ h->io_pending = CS_WANT_WRITE;
+ yaz_log (LOG_LOG, "SSL_read. want_write");
+ break;
+ }
+ if (res == 0)
+ return 0;
+ h->cerrno = CSERRORSSL;
+ return -1;
+ }
+ hasread += res;
+ }
+ TRC (fprintf (stderr, " Out of read loop with hasread=%d, berlen=%d\n",
+ hasread, berlen));
+ /* move surplus buffer (or everything if we didn't get a BER rec.) */
+ if (hasread > berlen)
+ {
+ tomove = req = hasread - berlen;
+ rest = tomove % CS_TCPIP_BUFCHUNK;
+ if (rest)
+ req += CS_TCPIP_BUFCHUNK - rest;
+ if (!sp->altbuf)
+ {
+ if (!(sp->altbuf = (char *)xmalloc(sp->altsize = req)))
+ return -1;
+ } else if (sp->altsize < req)
+ if (!(sp->altbuf =(char *)xrealloc(sp->altbuf, sp->altsize = req)))
+ return -1;
+ TRC(fprintf(stderr, " Moving %d bytes to altbuf(0x%x)\n", tomove,
+ (unsigned) sp->altbuf));
+ memcpy(sp->altbuf, *buf + berlen, sp->altlen = tomove);
+ }
+ if (berlen < CS_TCPIP_BUFCHUNK - 1)
+ *(*buf + berlen) = '\0';
+ return berlen ? berlen : 1;
+}
+#endif
+
+/*
+ * Returns 1, 0 or -1
+ * In nonblocking mode, you must call again with same buffer while
+ * return value is 1.
+ */
+int tcpip_put(COMSTACK h, char *buf, int size)
+{
+ int res;
+ struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
+
+ TRC(fprintf(stderr, "tcpip_put: size=%d\n", size));
+ h->io_pending = 0;
+ if (state->towrite < 0)
+ {
+ state->towrite = size;
+ state->written = 0;
+ }
+ else if (state->towrite != size)
+ {
+ h->cerrno = CSWRONGBUF;
+ return -1;
+ }
+ while (state->towrite > state->written)
+ {
+ if ((res = send(h->iofile, buf + state->written, size -
+ state->written, 0)) < 0)
+ {
+ if (
+#ifdef WIN32
+ WSAGetLastError() == WSAEWOULDBLOCK
+#else
+ errno == EAGAIN
+#endif
+ )
+ {
+ TRC(fprintf(stderr, " Flow control stop\n"));
+ h->io_pending = CS_WANT_WRITE;
+ return 1;
+ }
+ h->cerrno = CSYSERR;
+ return -1;
+ }
+ state->written += res;
+ TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
+ res, state->written, size));
+ }
+ state->towrite = state->written = -1;
+ TRC(fprintf(stderr, " Ok\n"));
+ return 0;
+}
+
+
+#if HAVE_OPENSSL_SSL_H
+/*
+ * Returns 1, 0 or -1
+ * In nonblocking mode, you must call again with same buffer while
+ * return value is 1.
+ */
+int ssl_put(COMSTACK h, char *buf, int size)
+{
+ int res;
+ struct tcpip_state *state = (struct tcpip_state *)h->cprivate;
+
+ TRC(fprintf(stderr, "ssl_put: size=%d\n", size));
+ h->io_pending = 0;
+ if (state->towrite < 0)
+ {
+ state->towrite = size;
+ state->written = 0;
+ }
+ else if (state->towrite != size)
+ {
+ h->cerrno = CSWRONGBUF;
+ return -1;
+ }
+ while (state->towrite > state->written)
+ {
+ res = SSL_write (state->ssl, buf + state->written,
+ size - state->written);
+ if (res <= 0)
+ {
+ int ssl_err = SSL_get_error(state->ssl, res);
+ if (ssl_err == SSL_ERROR_WANT_READ)
+ {
+ h->io_pending = CS_WANT_READ;
+ yaz_log (LOG_LOG, "SSL_write. want_read");
+ return 1;
+ }
+ if (ssl_err == SSL_ERROR_WANT_WRITE)
+ {
+ h->io_pending = CS_WANT_WRITE;
+ yaz_log (LOG_LOG, "SSL_write. want_write");
+ return 1;
+ }
+ h->cerrno = CSERRORSSL;
+ return -1;
+ }
+ state->written += res;
+ TRC(fprintf(stderr, " Wrote %d, written=%d, nbytes=%d\n",
+ res, state->written, size));
+ }
+ state->towrite = state->written = -1;
+ TRC(fprintf(stderr, " Ok\n"));
+ return 0;
+}
+#endif
+
+int tcpip_close(COMSTACK h)
+{
+ tcpip_state *sp = (struct tcpip_state *)h->cprivate;
+
+ TRC(fprintf(stderr, "tcpip_close\n"));
+ if (h->iofile != -1)
+ {
+#if HAVE_OPENSSL_SSL_H
+ if (sp->ssl)
+ {
+ SSL_shutdown (sp->ssl);
+ }
+#endif
+#ifdef WIN32
+ closesocket(h->iofile);
+#else
+ close(h->iofile);
+#endif
+ }
+ if (sp->altbuf)
+ xfree(sp->altbuf);
+#if HAVE_OPENSSL_SSL_H
+ if (sp->ssl)
+ {
+ TRC (fprintf(stderr, "SSL_free\n"));
+ SSL_free (sp->ssl);
+ }
+ sp->ssl = 0;
+ if (sp->ctx_alloc)
+ SSL_CTX_free (sp->ctx_alloc);
+#endif
+ xfree(sp);
+ xfree(h);
+ return 0;
+}
+
+char *tcpip_addrstr(COMSTACK h)
+{
+ struct sockaddr_in addr;
+ tcpip_state *sp = (struct tcpip_state *)h->cprivate;
+ char *r, *buf = sp->buf;
+ size_t len;
+ struct hostent *host;
+
+ len = sizeof(addr);
+ if (getpeername(h->iofile, (struct sockaddr*) &addr, &len) < 0)
+ {
+ h->cerrno = CSYSERR;
+ return 0;
+ }
+ if ((host = gethostbyaddr((char*)&addr.sin_addr, sizeof(addr.sin_addr),
+ AF_INET)))
+ r = (char*) host->h_name;
+ else
+ r = inet_ntoa(addr.sin_addr);
+ sprintf(buf, "tcp:%s", r);
+#if HAVE_OPENSSL_SSL_H
+ if (sp->ctx)
+ sprintf(buf, "ssl:%s", r);
+#endif
+ return buf;
+}
+
+int static tcpip_set_blocking(COMSTACK p, int blocking)
+{
+ unsigned long flag;
+
+ if (p->blocking == blocking)
+ return 1;
+ if(blocking)
+#ifdef WIN32
+ flag = blocking;
+ if (ioctlsocket(p->iofile, FIONBIO, &flag) < 0)
+ return 0;
+#else
+ flag = fcntl(p->iofile, F_GETFL, 0);
+ if(!blocking)
+ flag = flag & ~O_NONBLOCK;
+ else
+ flag = flag | O_NONBLOCK;
+ if (fcntl(p->iofile, F_SETFL, flag) < 0)
+ return 0;
+#endif
+ p->blocking = blocking;
+ return 1;
+}
projects / yaz-moved-to-github.git / blobdiff