567 lines
14 KiB
C
567 lines
14 KiB
C
/*
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* $Id: capi20.c,v 1.19 2001/03/01 14:59:11 paul Exp $
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*
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* $Log: capi20.c,v $
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* Revision 1.19 2001/03/01 14:59:11 paul
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* Various patches to fix errors when using the newest glibc,
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* replaced use of insecure tempnam() function
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* and to remove warnings etc.
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*
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* Revision 1.18 2000/11/12 16:06:41 kai
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* fix backwards compatibility in capi20 library, small other changes
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*
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* Revision 1.17 2000/06/26 15:00:43 calle
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* - Will also compile with 2.0 Kernelheaders.
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*
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* Revision 1.16 2000/05/18 15:02:26 calle
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* Updated _cmsg handling added new functions need by "capiconn".
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*
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* Revision 1.15 2000/04/10 09:08:06 calle
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* capi20_wait_for_message will now return CapiReceiveQueueEmpty on
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* timeout and error.
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*
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* Revision 1.14 2000/04/07 16:06:09 calle
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* Bugfix: without devfs open where without NONBLOCK, ahhh.
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*
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* Revision 1.13 2000/04/03 14:27:15 calle
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* non CAPI2.0 standard functions now named capi20ext not capi20.
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* Extentionfunctions will work with actual driver version.
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*
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* Revision 1.12 2000/03/03 15:56:14 calle
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* - now uses cloning device /dev/capi20.
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* - middleware extentions prepared.
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*
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* Revision 1.11 1999/12/22 17:46:21 calle
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* - Last byte in serial number now always 0.
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* - Last byte of manufacturer now always 0.
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* - returncode in capi20_isinstalled corrected.
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*
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* Revision 1.10 1999/11/11 09:24:07 calle
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* add shared lib destructor, to close "capi_fd" on unload with dlclose ..
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*
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* Revision 1.9 1999/10/20 16:43:17 calle
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* - The CAPI20 library is now a shared library.
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* - Arguments of function capi20_put_message swapped, to match capi spec.
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* - All capi20 related subdirs converted to use automake.
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* - Removed dependency to CONFIG_KERNELDIR where not needed.
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*
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* Revision 1.8 1999/09/15 08:10:44 calle
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* Bugfix: error in 64Bit extention.
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*
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* Revision 1.7 1999/09/10 17:20:33 calle
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* Last changes for proposed standards (CAPI 2.0):
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* - AK1-148 "Linux Extention"
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* - AK1-155 "Support of 64-bit Applications"
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*
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* Revision 1.6 1999/09/06 17:40:07 calle
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* Changes for CAPI 2.0 Spec.
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*
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* Revision 1.5 1999/04/20 19:52:19 calle
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* Bugfix in capi20_get_profile: wrong size in memcpy from
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* Kai Germaschewski <kai@thphy.uni-duesseldorf.de>
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*
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* Revision 1.4 1998/11/18 17:05:44 paul
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* fixed a (harmless) warning
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*
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* Revision 1.3 1998/08/30 09:57:14 calle
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* I hope it is know readable for everybody.
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*
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* Revision 1.1 1998/08/25 16:33:16 calle
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* Added CAPI2.0 library. First Version.
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*
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <limits.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <linux/capi.h>
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#include "capi20.h"
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#ifndef CAPI_GET_FLAGS
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#define CAPI_GET_FLAGS _IOR('C',0x23, unsigned)
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#endif
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#ifndef CAPI_SET_FLAGS
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#define CAPI_SET_FLAGS _IOR('C',0x24, unsigned)
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#endif
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#ifndef CAPI_CLR_FLAGS
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#define CAPI_CLR_FLAGS _IOR('C',0x25, unsigned)
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#endif
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#ifndef CAPI_NCCI_OPENCOUNT
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#define CAPI_NCCI_OPENCOUNT _IOR('C',0x26, unsigned)
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#endif
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#ifndef CAPI_NCCI_GETUNIT
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#define CAPI_NCCI_GETUNIT _IOR('C',0x27, unsigned)
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#endif
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static char capidevname[] = "/dev/capi20";
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static char capidevnamenew[] = "/dev/isdn/capi20";
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static int capi_fd = -1;
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static capi_ioctl_struct ioctl_data;
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static unsigned char rcvbuf[128+2048]; /* message + data */
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static unsigned char sndbuf[128+2048]; /* message + data */
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unsigned capi20_isinstalled (void)
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{
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if (capi_fd >= 0)
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return CapiNoError;
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/*----- open managment link -----*/
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if ((capi_fd = open(capidevname, O_RDWR, 0666)) < 0 && errno == ENOENT)
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capi_fd = open(capidevnamenew, O_RDWR, 0666);
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if (capi_fd < 0)
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return CapiRegNotInstalled;
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if (ioctl(capi_fd, CAPI_INSTALLED, 0) == 0)
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return CapiNoError;
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return CapiRegNotInstalled;
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}
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/*
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* managment of application ids
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*/
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#define MAX_APPL 1024
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static int applidmap[MAX_APPL];
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static inline int remember_applid(unsigned applid, int fd)
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{
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if (applid >= MAX_APPL)
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return -1;
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applidmap[applid] = fd;
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return 0;
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}
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static inline unsigned alloc_applid(int fd)
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{
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unsigned applid;
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for (applid=1; applid < MAX_APPL; applid++) {
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if (applidmap[applid] < 0) {
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applidmap[applid] = fd;
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return applid;
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}
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}
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return 0;
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}
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static inline void freeapplid(unsigned applid)
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{
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if (applid < MAX_APPL)
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applidmap[applid] = -1;
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}
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static inline int validapplid(unsigned applid)
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{
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return applid > 0 && applid < MAX_APPL && applidmap[applid] >= 0;
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}
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static inline int applid2fd(unsigned applid)
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{
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if (applid < MAX_APPL)
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return applidmap[applid];
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return -1;
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}
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/*
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* CAPI2.0 functions
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*/
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unsigned
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capi20_register (unsigned MaxB3Connection,
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unsigned MaxB3Blks,
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unsigned MaxSizeB3,
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unsigned *ApplID)
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{
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int applid = 0;
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char buf[PATH_MAX];
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int i, fd = -1;
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*ApplID = 0;
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if (capi20_isinstalled() != CapiNoError)
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return CapiRegNotInstalled;
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if ((fd = open(capidevname, O_RDWR|O_NONBLOCK, 0666)) < 0 && errno == ENOENT)
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fd = open(capidevnamenew, O_RDWR|O_NONBLOCK, 0666);
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if (fd < 0)
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return CapiRegOSResourceErr;
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ioctl_data.rparams.level3cnt = MaxB3Connection;
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ioctl_data.rparams.datablkcnt = MaxB3Blks;
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ioctl_data.rparams.datablklen = MaxSizeB3;
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if ((applid = ioctl(fd, CAPI_REGISTER, &ioctl_data)) < 0) {
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if (errno == EIO) {
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if (ioctl(fd, CAPI_GET_ERRCODE, &ioctl_data) < 0) {
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close (fd);
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return CapiRegOSResourceErr;
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}
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close (fd);
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return (unsigned)ioctl_data.errcode;
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} else if (errno == EINVAL) { // old kernel driver
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close (fd);
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fd = -1;
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for (i=0; fd < 0; i++) {
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/*----- open pseudo-clone device -----*/
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sprintf(buf, "/dev/capi20.%02d", i);
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if ((fd = open(buf, O_RDWR|O_NONBLOCK, 0666)) < 0) {
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switch (errno) {
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case EEXIST:
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break;
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default:
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return CapiRegOSResourceErr;
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}
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}
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}
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if (fd < 0)
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return CapiRegOSResourceErr;
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ioctl_data.rparams.level3cnt = MaxB3Connection;
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ioctl_data.rparams.datablkcnt = MaxB3Blks;
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ioctl_data.rparams.datablklen = MaxSizeB3;
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if ((applid = ioctl(fd, CAPI_REGISTER, &ioctl_data)) < 0) {
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if (errno == EIO) {
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if (ioctl(fd, CAPI_GET_ERRCODE, &ioctl_data) < 0) {
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close(fd);
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return CapiRegOSResourceErr;
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}
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close(fd);
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return (unsigned)ioctl_data.errcode;
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}
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close(fd);
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return CapiRegOSResourceErr;
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}
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applid = alloc_applid(fd);
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} // end old driver compatibility
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}
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if (remember_applid(applid, fd) < 0) {
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close(fd);
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return CapiRegOSResourceErr;
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}
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*ApplID = applid;
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return CapiNoError;
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}
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unsigned
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capi20_release (unsigned ApplID)
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{
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if (capi20_isinstalled() != CapiNoError)
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return CapiRegNotInstalled;
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if (!validapplid(ApplID))
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return CapiIllAppNr;
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(void)close(applid2fd(ApplID));
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freeapplid(ApplID);
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return CapiNoError;
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}
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unsigned
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capi20_put_message (unsigned ApplID, unsigned char *Msg)
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{
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unsigned ret;
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int len = (Msg[0] | (Msg[1] << 8));
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int cmd = Msg[4];
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int subcmd = Msg[5];
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int rc;
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int fd;
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if (capi20_isinstalled() != CapiNoError)
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return CapiRegNotInstalled;
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if (!validapplid(ApplID))
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return CapiIllAppNr;
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fd = applid2fd(ApplID);
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memcpy(sndbuf, Msg, len);
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if (cmd == CAPI_DATA_B3 && subcmd == CAPI_REQ) {
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int datalen = (Msg[16] | (Msg[17] << 8));
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void *dataptr;
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if (sizeof(void *) != 4) {
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if (len >= 30) { /* 64Bit CAPI-extention */
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u_int64_t data64;
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memcpy(&data64,Msg+22, sizeof(u_int64_t));
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if (data64 != 0) dataptr = (void *)(unsigned long)data64;
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else dataptr = Msg + len; /* Assume data after message */
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} else {
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dataptr = Msg + len; /* Assume data after message */
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}
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} else {
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u_int32_t data;
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memcpy(&data,Msg+12, sizeof(u_int32_t));
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if (data != 0) dataptr = (void *)(unsigned long)data;
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else dataptr = Msg + len; /* Assume data after message */
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}
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memcpy(sndbuf+len, dataptr, datalen);
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len += datalen;
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}
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ret = CapiNoError;
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errno = 0;
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if ((rc = write(fd, sndbuf, len)) != len) {
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switch (errno) {
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case EFAULT:
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case EINVAL:
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ret = CapiIllCmdOrSubcmdOrMsgToSmall;
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break;
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case EBADF:
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ret = CapiIllAppNr;
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break;
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case EIO:
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if (ioctl(fd, CAPI_GET_ERRCODE, &ioctl_data) < 0)
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ret = CapiMsgOSResourceErr;
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else ret = (unsigned)ioctl_data.errcode;
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break;
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default:
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ret = CapiMsgOSResourceErr;
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break;
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}
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}
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return ret;
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}
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unsigned
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capi20_get_message (unsigned ApplID, unsigned char **Buf)
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{
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unsigned ret;
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int rc, fd;
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if (capi20_isinstalled() != CapiNoError)
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return CapiRegNotInstalled;
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if (!validapplid(ApplID))
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return CapiIllAppNr;
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fd = applid2fd(ApplID);
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*Buf = rcvbuf;
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if ((rc = read(fd, rcvbuf, sizeof(rcvbuf))) > 0) {
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CAPIMSG_SETAPPID(rcvbuf, ApplID); // workaround for old driver
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if ( CAPIMSG_COMMAND(rcvbuf) == CAPI_DATA_B3
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&& CAPIMSG_SUBCOMMAND(rcvbuf) == CAPI_IND) {
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if (sizeof(void *) == 4) {
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u_int32_t data = (u_int32_t)rcvbuf + CAPIMSG_LEN(rcvbuf);
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rcvbuf[12] = data & 0xff;
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rcvbuf[13] = (data >> 8) & 0xff;
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rcvbuf[14] = (data >> 16) & 0xff;
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rcvbuf[15] = (data >> 24) & 0xff;
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} else {
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u_int64_t data;
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if (CAPIMSG_LEN(rcvbuf) < 30) {
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/*
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* grr, 64bit arch, but no data64 included,
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* seems to be old driver
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*/
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memmove(rcvbuf+30, rcvbuf+CAPIMSG_LEN(rcvbuf),
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CAPIMSG_DATALEN(rcvbuf));
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rcvbuf[0] = 30;
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rcvbuf[1] = 0;
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}
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data = (u_int64_t)rcvbuf + CAPIMSG_LEN(rcvbuf);
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rcvbuf[12] = rcvbuf[13] = rcvbuf[14] = rcvbuf[15] = 0;
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rcvbuf[22] = data & 0xff;
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rcvbuf[23] = (data >> 8) & 0xff;
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rcvbuf[24] = (data >> 16) & 0xff;
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rcvbuf[25] = (data >> 24) & 0xff;
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rcvbuf[26] = (data >> 32) & 0xff;
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rcvbuf[27] = (data >> 40) & 0xff;
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rcvbuf[28] = (data >> 48) & 0xff;
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rcvbuf[29] = (data >> 56) & 0xff;
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}
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}
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return CapiNoError;
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}
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if (rc == 0)
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return CapiReceiveQueueEmpty;
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switch (errno) {
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case EMSGSIZE:
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ret = CapiIllCmdOrSubcmdOrMsgToSmall;
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break;
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case EAGAIN:
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return CapiReceiveQueueEmpty;
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default:
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ret = CapiMsgOSResourceErr;
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break;
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}
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return ret;
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}
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unsigned char *
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capi20_get_manufacturer(unsigned Ctrl, unsigned char *Buf)
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{
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if (capi20_isinstalled() != CapiNoError)
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return 0;
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ioctl_data.contr = Ctrl;
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if (ioctl(capi_fd, CAPI_GET_MANUFACTURER, &ioctl_data) < 0)
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return 0;
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memcpy(Buf, ioctl_data.manufacturer, CAPI_MANUFACTURER_LEN);
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Buf[CAPI_MANUFACTURER_LEN-1] = 0;
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return Buf;
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}
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unsigned char *
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capi20_get_version(unsigned Ctrl, unsigned char *Buf)
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{
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if (capi20_isinstalled() != CapiNoError)
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return 0;
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ioctl_data.contr = Ctrl;
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if (ioctl(capi_fd, CAPI_GET_VERSION, &ioctl_data) < 0)
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return 0;
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memcpy(Buf, &ioctl_data.version, sizeof(capi_version));
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return Buf;
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}
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unsigned char *
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capi20_get_serial_number(unsigned Ctrl, unsigned char *Buf)
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{
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if (capi20_isinstalled() != CapiNoError)
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return 0;
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ioctl_data.contr = Ctrl;
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if (ioctl(capi_fd, CAPI_GET_SERIAL, &ioctl_data) < 0)
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return 0;
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memcpy(Buf, &ioctl_data.serial, CAPI_SERIAL_LEN);
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Buf[CAPI_SERIAL_LEN-1] = 0;
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return Buf;
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}
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unsigned
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capi20_get_profile(unsigned Ctrl, unsigned char *Buf)
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{
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if (capi20_isinstalled() != CapiNoError)
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return CapiMsgNotInstalled;
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ioctl_data.contr = Ctrl;
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if (ioctl(capi_fd, CAPI_GET_PROFILE, &ioctl_data) < 0) {
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if (errno != EIO)
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return CapiMsgOSResourceErr;
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if (ioctl(capi_fd, CAPI_GET_ERRCODE, &ioctl_data) < 0)
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return CapiMsgOSResourceErr;
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return (unsigned)ioctl_data.errcode;
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}
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if (Ctrl)
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memcpy(Buf, &ioctl_data.profile, sizeof(struct capi_profile));
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else
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memcpy(Buf, &ioctl_data.profile.ncontroller,
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sizeof(ioctl_data.profile.ncontroller));
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return CapiNoError;
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}
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/*
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* functions added to the CAPI2.0 spec
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*/
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unsigned
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capi20_waitformessage(unsigned ApplID, struct timeval *TimeOut)
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{
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int fd;
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fd_set rfds;
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FD_ZERO(&rfds);
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if (capi20_isinstalled() != CapiNoError)
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return CapiRegNotInstalled;
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if(!validapplid(ApplID))
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return CapiIllAppNr;
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fd = applid2fd(ApplID);
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FD_SET(fd, &rfds);
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if (select(fd + 1, &rfds, NULL, NULL, TimeOut) < 1)
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return CapiReceiveQueueEmpty;
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return CapiNoError;
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}
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int
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capi20_fileno(unsigned ApplID)
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{
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return applid2fd(ApplID);
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}
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/*
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* Extensions for middleware
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*/
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int
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capi20ext_get_flags(unsigned ApplID, unsigned *flagsptr)
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{
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if (ioctl(applid2fd(ApplID), CAPI_GET_FLAGS, flagsptr) < 0)
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return CapiMsgOSResourceErr;
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return CapiNoError;
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}
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int
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capi20ext_set_flags(unsigned ApplID, unsigned flags)
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{
|
|
if (ioctl(applid2fd(ApplID), CAPI_SET_FLAGS, &flags) < 0)
|
|
return CapiMsgOSResourceErr;
|
|
return CapiNoError;
|
|
}
|
|
|
|
int
|
|
capi20ext_clr_flags(unsigned ApplID, unsigned flags)
|
|
{
|
|
if (ioctl(applid2fd(ApplID), CAPI_CLR_FLAGS, &flags) < 0)
|
|
return CapiMsgOSResourceErr;
|
|
return CapiNoError;
|
|
}
|
|
|
|
char *
|
|
capi20ext_get_tty_devname(unsigned applid, unsigned ncci, char *buf, size_t size)
|
|
{
|
|
int unit;
|
|
unit = ioctl(applid2fd(applid), CAPI_NCCI_GETUNIT, &ncci);
|
|
if (unit < 0)
|
|
return 0;
|
|
snprintf(buf, size, "/dev/capi/%d", unit);
|
|
return buf;
|
|
}
|
|
|
|
char *
|
|
capi20ext_get_raw_devname(unsigned applid, unsigned ncci, char *buf, size_t size)
|
|
{
|
|
int unit;
|
|
unit = ioctl(applid2fd(applid), CAPI_NCCI_GETUNIT, &ncci);
|
|
if (unit < 0)
|
|
return 0;
|
|
snprintf(buf, size, "/dev/capi/r%d", unit);
|
|
return buf;
|
|
}
|
|
|
|
int capi20ext_ncci_opencount(unsigned applid, unsigned ncci)
|
|
{
|
|
return ioctl(applid2fd(applid), CAPI_NCCI_OPENCOUNT, &ncci);
|
|
}
|
|
|
|
static void initlib(void) __attribute__((constructor));
|
|
static void exitlib(void) __attribute__((destructor));
|
|
|
|
static void initlib(void)
|
|
{
|
|
int i;
|
|
for (i=0; i < MAX_APPL; i++)
|
|
applidmap[i] = -1;
|
|
}
|
|
|
|
static void exitlib(void)
|
|
{
|
|
if (capi_fd >= 0) {
|
|
close(capi_fd);
|
|
capi_fd = -1;
|
|
}
|
|
}
|