461 lines
11 KiB
C
461 lines
11 KiB
C
/* $FreeBSD$ */
|
|
|
|
/***********************************************************
|
|
Copyright 1990, by Alfalfa Software Incorporated, Cambridge, Massachusetts.
|
|
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted,
|
|
provided that the above copyright notice appear in all copies and that
|
|
both that copyright notice and this permission notice appear in
|
|
supporting documentation, and that Alfalfa's name not be used in
|
|
advertising or publicity pertaining to distribution of the software
|
|
without specific, written prior permission.
|
|
|
|
ALPHALPHA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
|
|
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
|
|
ALPHALPHA BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
|
|
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
|
|
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
|
|
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
SOFTWARE.
|
|
|
|
If you make any modifications, bugfixes or other changes to this software
|
|
we'd appreciate it if you could send a copy to us so we can keep things
|
|
up-to-date. Many thanks.
|
|
Kee Hinckley
|
|
Alfalfa Software, Inc.
|
|
267 Allston St., #3
|
|
Cambridge, MA 02139 USA
|
|
nazgul@alfalfa.com
|
|
|
|
******************************************************************/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char *rcsid = "$NetBSD: msgcat.c,v 1.11 1995/02/27 13:06:51 cgd Exp $";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/* Edit History
|
|
|
|
03/06/91 4 schulert remove working directory from nlspath
|
|
01/18/91 2 hamilton #if not rescanned
|
|
01/12/91 3 schulert conditionally use prototypes
|
|
11/03/90 1 hamilton Alphalpha->Alfalfa & OmegaMail->Poste
|
|
10/15/90 2 schulert > #include <unistd.h> if MIPS
|
|
08/13/90 1 schulert move from ua to omu
|
|
*/
|
|
|
|
/*
|
|
* We need a better way of handling errors than printing text. I need
|
|
* to add an error handling routine.
|
|
*/
|
|
|
|
#include "nl_types.h"
|
|
#include "msgcat.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <locale.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#ifndef True
|
|
# define True ~0
|
|
# define False 0
|
|
#endif
|
|
|
|
/* take care of sysv diffs */
|
|
#ifndef MAXPATHLEN
|
|
#define MAXPATHLEN 1024
|
|
#endif
|
|
|
|
#ifndef FD_CLOEXEC
|
|
#define FD_CLOEXEC 1
|
|
#endif
|
|
|
|
#define NLERR ((nl_catd) -1)
|
|
|
|
static nl_catd loadCat();
|
|
static int loadSet();
|
|
|
|
nl_catd _catopen( name, type)
|
|
__const char *name;
|
|
int type;
|
|
{
|
|
char path[MAXPATHLEN];
|
|
__const char *catpath = NULL;
|
|
char *nlspath;
|
|
char *lang;
|
|
char *base, *cptr, *pathP;
|
|
int spcleft;
|
|
long len;
|
|
struct stat sbuf;
|
|
|
|
if (!name || !*name) {
|
|
errno = EINVAL;
|
|
return(NLERR);
|
|
}
|
|
|
|
if (strchr(name, '/')) {
|
|
catpath = name;
|
|
if (stat(catpath, &sbuf)) return(NLERR);
|
|
} else {
|
|
if (type == NL_CAT_LOCALE)
|
|
lang = setlocale(LC_MESSAGES, NULL);
|
|
else {
|
|
if ((lang = (char *) getenv("LANG")) == NULL)
|
|
lang = "C";
|
|
}
|
|
if ((nlspath = (char *) getenv("NLSPATH")) == NULL
|
|
#ifndef __NETBSD_SYSCALLS
|
|
|| issetugid()
|
|
#endif
|
|
)
|
|
nlspath = "/usr/share/nls/%L/%N.cat:/usr/share/nls/%N/%L:/usr/local/share/nls/%L/%N.cat:/usr/local/share/nls/%N/%L";
|
|
|
|
len = strlen(nlspath);
|
|
base = cptr = malloc(len + 2);
|
|
if (!base) return(NLERR);
|
|
strcpy(cptr, nlspath);
|
|
cptr[len] = ':';
|
|
cptr[len+1] = '\0';
|
|
|
|
for (nlspath = cptr; *cptr; ++cptr) {
|
|
if (*cptr == ':') {
|
|
*cptr = '\0';
|
|
for (pathP = path; *nlspath; ++nlspath) {
|
|
if (*nlspath == '%') {
|
|
spcleft = sizeof(path) - (pathP - path);
|
|
if (*(nlspath + 1) == 'L') {
|
|
++nlspath;
|
|
if (strlcpy(pathP, lang, spcleft) >= spcleft) {
|
|
errno = ENAMETOOLONG;
|
|
return(NLERR);
|
|
}
|
|
pathP += strlen(lang);
|
|
} else if (*(nlspath + 1) == 'N') {
|
|
++nlspath;
|
|
if (strlcpy(pathP, name, spcleft) >= spcleft) {
|
|
errno = ENAMETOOLONG;
|
|
return(NLERR);
|
|
}
|
|
pathP += strlen(name);
|
|
} else *(pathP++) = *nlspath;
|
|
} else *(pathP++) = *nlspath;
|
|
}
|
|
*pathP = '\0';
|
|
if (stat(path, &sbuf) == 0) {
|
|
catpath = path;
|
|
break;
|
|
}
|
|
nlspath = cptr+1;
|
|
}
|
|
}
|
|
free(base);
|
|
|
|
if (!catpath) {
|
|
errno = ENOENT;
|
|
return(NLERR);
|
|
}
|
|
}
|
|
|
|
return(loadCat(catpath));
|
|
}
|
|
|
|
/*
|
|
* We've got an odd situation here. The odds are real good that the
|
|
* number we are looking for is almost the same as the index. We could
|
|
* use the index, check the difference and do something intelligent, but
|
|
* I haven't quite figured out what's intelligent.
|
|
*
|
|
* Here's a start.
|
|
* Take an id N. If there are > N items in the list, then N cannot
|
|
* be more than N items from the start, since otherwise there would
|
|
* have to be duplicate items. So we can safely set the top to N+1
|
|
* (after taking into account that ids start at 1, and arrays at 0)
|
|
*
|
|
* Let's say we are at position P, and we are looking for N, but have
|
|
* V. If N > V, then the furthest away that N could be is
|
|
* P + (N-V). So we can safely set hi to P+(N-V)+1. For example:
|
|
* We are looking for 10, but have 8
|
|
* 8 ? ? ? ?
|
|
* >=9 >=10 >=11
|
|
*
|
|
*/
|
|
static MCSetT *MCGetSet( cat, setId)
|
|
MCCatT *cat;
|
|
int setId;
|
|
{
|
|
MCSetT *set;
|
|
long lo, hi, cur, dir;
|
|
|
|
if (!cat || setId <= 0) return(NULL);
|
|
|
|
lo = 0;
|
|
if (setId - 1 < cat->numSets) {
|
|
cur = setId - 1;
|
|
hi = setId;
|
|
} else {
|
|
hi = cat->numSets;
|
|
cur = (hi - lo) / 2;
|
|
}
|
|
|
|
while (True) {
|
|
set = cat->sets + cur;
|
|
if (set->setId == setId) break;
|
|
if (set->setId < setId) {
|
|
lo = cur+1;
|
|
if (hi > cur + (setId - set->setId) + 1) hi = cur+(setId-set->setId)+1;
|
|
dir = 1;
|
|
} else {
|
|
hi = cur;
|
|
dir = -1;
|
|
}
|
|
if (lo >= hi) return(NULL);
|
|
if (hi - lo == 1) cur += dir;
|
|
else cur += ((hi - lo) / 2) * dir;
|
|
}
|
|
if (set->invalid)
|
|
(void) loadSet(cat, set);
|
|
return(set);
|
|
}
|
|
|
|
|
|
static MCMsgT *MCGetMsg( set, msgId)
|
|
MCSetT *set;
|
|
int msgId;
|
|
{
|
|
MCMsgT *msg;
|
|
long lo, hi, cur, dir;
|
|
|
|
if (!set || set->invalid || msgId <= 0) return(NULL);
|
|
|
|
lo = 0;
|
|
if (msgId - 1 < set->numMsgs) {
|
|
cur = msgId - 1;
|
|
hi = msgId;
|
|
} else {
|
|
hi = set->numMsgs;
|
|
cur = (hi - lo) / 2;
|
|
}
|
|
|
|
while (True) {
|
|
msg = set->u.msgs + cur;
|
|
if (msg->msgId == msgId) break;
|
|
if (msg->msgId < msgId) {
|
|
lo = cur+1;
|
|
if (hi > cur + (msgId - msg->msgId) + 1) hi = cur+(msgId-msg->msgId)+1;
|
|
dir = 1;
|
|
} else {
|
|
hi = cur;
|
|
dir = -1;
|
|
}
|
|
if (lo >= hi) return(NULL);
|
|
if (hi - lo == 1) cur += dir;
|
|
else cur += ((hi - lo) / 2) * dir;
|
|
}
|
|
return(msg);
|
|
}
|
|
|
|
char *_catgets( catd, setId, msgId, dflt)
|
|
nl_catd catd;
|
|
int setId;
|
|
int msgId;
|
|
__const char *dflt;
|
|
{
|
|
MCMsgT *msg;
|
|
MCCatT *cat = (MCCatT *) catd;
|
|
__const char *cptr;
|
|
|
|
if (catd == NULL || catd == NLERR)
|
|
return((char *)dflt);
|
|
msg = MCGetMsg(MCGetSet(cat, setId), msgId);
|
|
if (msg) cptr = msg->msg.str;
|
|
else cptr = dflt;
|
|
return((char *)cptr);
|
|
}
|
|
|
|
|
|
int _catclose( catd)
|
|
nl_catd catd;
|
|
{
|
|
MCCatT *cat = (MCCatT *) catd;
|
|
MCSetT *set;
|
|
int i;
|
|
|
|
if (catd == NULL || catd == NLERR) {
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
|
|
if (cat->loadType != MCLoadAll) _close(cat->fd);
|
|
for (i = 0; i < cat->numSets; ++i) {
|
|
set = cat->sets + i;
|
|
if (!set->invalid) {
|
|
free(set->data.str);
|
|
free(set->u.msgs);
|
|
}
|
|
}
|
|
free(cat->sets);
|
|
free(cat);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Internal routines
|
|
*/
|
|
|
|
/* Note that only malloc failures are allowed to return an error */
|
|
#define ERRNAME "Message Catalog System"
|
|
#define CORRUPT() {fprintf(stderr, "%s: corrupt file.\n", ERRNAME); free(cat); errno = EINVAL; return(NLERR);}
|
|
#define NOSPACE() {fprintf(stderr, "%s: no more memory.\n", ERRNAME); free(cat); return(NLERR);}
|
|
|
|
static nl_catd loadCat(catpath)
|
|
__const char *catpath;
|
|
{
|
|
MCHeaderT header;
|
|
MCCatT *cat;
|
|
MCSetT *set;
|
|
long i, j;
|
|
off_t nextSet;
|
|
|
|
cat = (MCCatT *) malloc(sizeof(MCCatT));
|
|
if (!cat) return(NLERR);
|
|
cat->loadType = MCLoadBySet;
|
|
|
|
if ((cat->fd = _open(catpath, O_RDONLY)) < 0) {
|
|
free(cat);
|
|
return(NLERR);
|
|
}
|
|
|
|
(void)_fcntl(cat->fd, F_SETFD, FD_CLOEXEC);
|
|
|
|
if (_read(cat->fd, &header, sizeof(header)) != sizeof(header))
|
|
CORRUPT();
|
|
|
|
if (strncmp(header.magic, MCMagic, MCMagicLen) != 0) CORRUPT();
|
|
|
|
if (header.majorVer != MCMajorVer) {
|
|
free(cat);
|
|
fprintf(stderr, "%s: %s is version %ld, we need %ld.\n", ERRNAME,
|
|
catpath, header.majorVer, MCMajorVer);
|
|
errno = EINVAL;
|
|
return(NLERR);
|
|
}
|
|
|
|
if (header.numSets <= 0) {
|
|
free(cat);
|
|
fprintf(stderr, "%s: %s has %ld sets!\n", ERRNAME, catpath,
|
|
header.numSets);
|
|
errno = EINVAL;
|
|
return(NLERR);
|
|
}
|
|
|
|
cat->numSets = header.numSets;
|
|
cat->sets = (MCSetT *) malloc(sizeof(MCSetT) * header.numSets);
|
|
if (!cat->sets) NOSPACE();
|
|
|
|
nextSet = header.firstSet;
|
|
for (i = 0; i < cat->numSets; ++i) {
|
|
if (lseek(cat->fd, nextSet, 0) == -1) {
|
|
for (j = 0; j < i; j++) {
|
|
set = cat->sets + j;
|
|
if (!set->invalid) {
|
|
free(set->data.str);
|
|
free(set->u.msgs);
|
|
}
|
|
}
|
|
free(cat->sets);
|
|
CORRUPT();
|
|
}
|
|
|
|
/* read in the set header */
|
|
set = cat->sets + i;
|
|
if (_read(cat->fd, set, sizeof(*set)) != sizeof(*set)) {
|
|
for (j = 0; j < i; j++) {
|
|
set = cat->sets + j;
|
|
if (!set->invalid) {
|
|
free(set->data.str);
|
|
free(set->u.msgs);
|
|
}
|
|
}
|
|
free(cat->sets);
|
|
CORRUPT();
|
|
}
|
|
|
|
/* if it's invalid, skip over it (and backup 'i') */
|
|
|
|
if (set->invalid) {
|
|
--i;
|
|
nextSet = set->nextSet;
|
|
continue;
|
|
}
|
|
|
|
if (cat->loadType == MCLoadAll) {
|
|
int res;
|
|
|
|
if ((res = loadSet(cat, set)) <= 0) {
|
|
for (j = 0; j < i; j++) {
|
|
set = cat->sets + j;
|
|
if (!set->invalid) {
|
|
free(set->data.str);
|
|
free(set->u.msgs);
|
|
}
|
|
}
|
|
free(cat->sets);
|
|
if (res < 0) NOSPACE();
|
|
CORRUPT();
|
|
}
|
|
} else set->invalid = True;
|
|
nextSet = set->nextSet;
|
|
}
|
|
if (cat->loadType == MCLoadAll) {
|
|
_close(cat->fd);
|
|
cat->fd = -1;
|
|
}
|
|
return((nl_catd) cat);
|
|
}
|
|
|
|
static int loadSet(cat, set)
|
|
MCCatT *cat;
|
|
MCSetT *set;
|
|
{
|
|
MCMsgT *msg;
|
|
int i;
|
|
|
|
/* Get the data */
|
|
if (lseek(cat->fd, set->data.off, 0) == -1) return(0);
|
|
if ((set->data.str = malloc(set->dataLen)) == NULL) return(-1);
|
|
if (_read(cat->fd, set->data.str, set->dataLen) != set->dataLen) {
|
|
free(set->data.str); return(0);
|
|
}
|
|
|
|
/* Get the messages */
|
|
if (lseek(cat->fd, set->u.firstMsg, 0) == -1) {
|
|
free(set->data.str); return(0);
|
|
}
|
|
if ((set->u.msgs = (MCMsgT *) malloc(sizeof(MCMsgT) * set->numMsgs)) == NULL) {
|
|
free(set->data.str); return(-1);
|
|
}
|
|
|
|
for (i = 0; i < set->numMsgs; ++i) {
|
|
msg = set->u.msgs + i;
|
|
if (_read(cat->fd, msg, sizeof(*msg)) != sizeof(*msg)) {
|
|
free(set->u.msgs); free(set->data.str); return(0);
|
|
}
|
|
if (msg->invalid) {
|
|
--i;
|
|
continue;
|
|
}
|
|
msg->msg.str = (char *) (set->data.str + msg->msg.off);
|
|
}
|
|
set->invalid = False;
|
|
return(1);
|
|
}
|