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/*
* Copyright (c) 2009, 2013-2014 Paul Mattes.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the names of Paul Mattes, Jeff Sparkes, GTRC nor the names of
* their contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL MATTES "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL PAUL MATTES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* readres.c
* A displayless 3270 Terminal Emulator
* Resource file reader.
*/
#include "globals.h"
#if !defined(_WIN32) /*[*/
#include <sys/wait.h>
#endif /*]*/
#include <signal.h>
#include <errno.h>
#include "appres.h"
#include "3270ds.h"
#include "resources.h"
#include "actionsc.h"
#include "ansic.h"
#include "charsetc.h"
#include "ctlrc.h"
#include "gluec.h"
#include "hostc.h"
#include "keymapc.h"
#include "kybdc.h"
#include "macrosc.h"
#include "menubarc.h"
#include "popupsc.h"
#include "readresc.h"
#include "screenc.h"
#include "selectc.h"
#include "tablesc.h"
#include "telnetc.h"
#include "togglesc.h"
#include "trace_dsc.h"
#include "unicodec.h"
#include "utilc.h"
#if defined(_WIN32) /*[*/
#include "winversc.h"
#endif /*]*/
#if !defined(ME) /*[*/
# if defined(C3270) /*[*/
# if defined(WC3270) /*[*/
# define ME "wc3270"
# else /*][*/
# define ME "c3270"
# endif /*]*/
# elif defined(S3270) /*[*/
# if defined(WS3270) /*[*/
# define ME "ws3270"
# else /*][*/
# define ME "s3270"
# endif /*]*/
# elif defined(TCL3270) /*][*/
# define ME "tcl3270"
# endif /*]*/
#endif /*]*/
/*
* Make sure a resource definition begins with the application name, then
* split it into the name and the value.
*/
int
validate_and_split_resource(const char *where, const char *arg,
const char **left, unsigned *rnlenp, const char **right)
{
unsigned match_len;
unsigned rnlen;
const char *s = arg;
static char me_dot[] = ME ".";
static char me_star[] = ME "*";
/* Enforce "-3270." or "-3270*" or "*". */
if (!strncmp(s, me_dot, sizeof(me_dot)-1))
match_len = sizeof(me_dot)-1;
else if (!strncmp(arg, me_star, sizeof(me_star)-1))
match_len = sizeof(me_star)-1;
else if (arg[0] == '*')
match_len = 1;
else {
xs_warning("%s: Invalid resource syntax '%.*s', name must "
"begin with '%s'",
where, (int)(sizeof(me_dot)-1), arg, me_dot);
return -1;
}
/* Separate the parts. */
s = arg + match_len;
while (*s && *s != ':' && !isspace(*s))
s++;
rnlen = s - (arg + match_len);
if (!rnlen) {
xs_warning("%s: Invalid resource syntax, missing resource "
"name", where);
return -1;
}
while (isspace(*s))
s++;
if (*s != ':') {
xs_warning("%s: Invalid resource syntax, missing ':'", where);
return -1;
}
s++;
while (isspace(*s))
s++;
/* Return what we got. */
*left = arg + match_len;
*rnlenp = rnlen;
*right = s;
return 0;
}
/* Read resources from a file. */
int
read_resource_filex(const char *filename, Boolean fatal)
{
FILE *f;
int ilen;
char buf[4096];
char *where;
int lno = 0;
f = fopen(filename, "r");
if (f == NULL) {
if (fatal)
xs_warning("Cannot open '%s': %s", filename,
strerror(errno));
return -1;
}
/* Merge in what's in the file into the resource database. */
where = Malloc(strlen(filename) + 64);
ilen = 0;
while (fgets(buf + ilen, sizeof(buf) - ilen, f) != CN || ilen) {
char *s;
unsigned sl;
Boolean bsl = False;
lno++;
/* Stip any trailing newline. */
sl = strlen(buf + ilen);
if (sl && (buf + ilen)[sl-1] == '\n')
(buf + ilen)[--sl] = '\0';
/* Check for a trailing backslash. */
s = buf + ilen;
if ((sl > 0) && (s[sl - 1] == '\\')) {
s[sl - 1] = '\0';
bsl = True;
}
/* Skip leading whitespace. */
s = buf;
while (isspace(*s))
s++;
/* If this line is a continuation, try again. */
if (bsl) {
ilen += strlen(buf + ilen);
if ((unsigned)ilen >= sizeof(buf) - 1) {
(void) sprintf(where, "%s:%d: Line too long\n",
filename, lno);
Warning(where);
break;
}
continue;
}
/* Skip comments. */
if (*s == '!') {
ilen = 0;
continue;
}
if (*s == '#') {
(void) sprintf(where, "%s:%d: Invalid profile "
"syntax ('#' ignored)", filename, lno);
Warning(where);
ilen = 0;
continue;
}
/* Strip trailing whitespace and check for empty lines. */
sl = strlen(s);
while (sl && isspace(s[sl-1]))
s[--sl] = '\0';
if (!sl) {
ilen = 0;
continue;
}
/* Digest it. */
(void) sprintf(where, "%s:%d", filename, lno);
parse_xrm(s, where);
/* Get ready for the next iteration. */
ilen = 0;
}
Free(where);
fclose(f);
return 0;
}
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