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/* $Id$ */
/*
* Copyright (c) 1995-1996 Sam Leffler
* Copyright (c) 1995-1996 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <string.h>
#include <stdio.h>
#include <syslog.h>
#include <stdarg.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include "config.h"
#include "port.h"
static void
fatal(char* fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (isatty(fileno(stderr))) {
vfprintf(stderr, fmt, ap);
putc('\n', stderr);
} else {
vsyslog(LOG_ERR, fmt, ap);
}
va_end(ap);
exit(-1);
}
#define BIT(i) (1<<(i))
int fxmin(int a, int b) { return (a < b) ? a : b; }
const char OPAREN = '(';
const char CPAREN = ')';
const char COMMA = ',';
const char SPACE = ' ';
/*
* Parse a Class 2 parameter range string. This is very
* forgiving because modem vendors do not exactly follow
* the syntax specified in the "standard". Try looking
* at some of the responses given by rev ~4.04 of the
* ZyXEL firmware (for example)!
*
* NB: We accept alphanumeric items but don't return them
* in the parsed range so that modems like the ZyXEL 2864
* that indicate they support ``Class Z'' are handled.
*/
int
vparseRange(const char* cp, int masked, int nargs, ... )
{
int b = 1;
va_list ap;
va_start(ap, nargs);
while (nargs-- > 0) {
char matchc;
int acceptList;
int mask;
while (cp[0] == SPACE)
cp++;
if (cp[0] == OPAREN) { /* (<items>) */
matchc = CPAREN;
acceptList = 1;
cp++;
} else if (isalnum(cp[0])) { /* <item> */
matchc = COMMA;
acceptList = (nargs == 0);
} else { /* skip to comma */
b = 0;
break;
}
mask = 0;
while (cp[0] && cp[0] != matchc) {
int v;
int r;
if (cp[0] == SPACE) { /* ignore white space */
cp++;
continue;
}
if (!isalnum(cp[0])) {
b = 0;
goto done;
}
if (isdigit(cp[0])) {
v = 0;
do {
v = v*10 + (cp[0] - '0');
} while (isdigit((++cp)[0]));
} else {
v = -1; /* XXX skip item below */
while (isalnum((++cp)[0]))
;
}
r = v;
if (cp[0] == '-') { /* <low>-<high> */
cp++;
if (!isdigit(cp[0])) {
b = 0;
goto done;
}
r = 0;
do {
r = r*10 + (cp[0] - '0');
} while (isdigit((++cp)[0]));
} else if (cp[0] == '.') { /* <d.b> */
cp++;
while (isdigit(cp[0])) /* XXX */
cp++;
v++, r++; /* XXX 2.0 -> 3 */
}
if (v != -1) { /* expand range or list */
if ((BIT(nargs) & masked) == BIT(nargs)) {
/*
* These are pre-masked values. T.32 Table 21 gives valid
* values as: 00, 01, 02, 04, 08, 10, 20, 40 (hex).
*
* Some modems may say "(00-7F)" when what's meant is
* "(00-40)" or simply "(7F)".
*/
if (v == 00 && r == 127)
v = r = 127;
if (v == r)
mask = v;
else {
r = fxmin(r, 64); /* clamp to valid range */
mask = 0;
for (; v <= r; v++)
if (v == 0 || v == 1 || v == 2 || v == 4 || v == 8 || v == 16 || v == 32 || v == 64)
mask += v;
}
}
else {
r = fxmin(r, 31); /* clamp to valid range */
for (; v <= r; v++)
mask |= 1<<v;
}
}
if (acceptList && cp[0] == COMMA) /* (<item>,<item>...) */
cp++;
}
*va_arg(ap, int*) = mask;
if (cp[0] == matchc)
cp++;
if (matchc == CPAREN && cp[0] == COMMA)
cp++;
}
done:
va_end(ap);
return (b);
}
/*
* Class 2 Fax Modem Definitions.
*/
#define VR_ALL (BIT(7)-1)
#define BR_ALL (BIT(6)-1) /* don't encode > 14.4 Kbps */
#define WD_ALL (BIT(5)-1)
#define LN_ALL (BIT(3)-1)
#define DF_ALL (BIT(4)-1)
#define EC_DISABLE 0
#define EC_ALL (BIT(5)-1)
#define BF_ALL (BIT(2)-1)
#define ST_ALL (BIT(8)-1)
/*
* Parse a Class 2 parameter specification and
* return a string with the encoded information.
* This should encode identically as does
* Class2Params::encodeCaps().
*/
int
parseCapabilities(const char* cp, u_int* caps)
{
/* we are limited to 32 bits, thus BR_ALL is restricted above */
int vr, br, wd, ln, df, ec, bf, st;
/*
* reversed, count-down style bitmask: used to tell vparseRange
* which capabilities are 'true' bitmask (not just max bit);
* right now they are vr and bf (ie: vr is 7th position considering
* the list in reversed order and base 0)
*/
int masked = (1 << 7) + (1 << 1);
if (vparseRange(cp, masked, 8, &vr,&br,&wd,&ln,&df,&ec,&bf,&st)) {
*caps = (vr&VR_ALL)
| ((br&BR_ALL)<<8)
| ((wd&WD_ALL)<<14)
| ((ln&LN_ALL)<<19)
| ((df&DF_ALL)<<22)
| ((ec&EC_DISABLE)<<26)
| (((ec&EC_ALL) != 0 ? 1 : 0)<<27)
| ((bf&BF_ALL)<<28)
| ((st&ST_ALL)<<30)
;
return (1);
} else
return (0);
}
#undef BIT
extern int cvtFacility(const char*, int*);
int
main(int argc, char** argv)
{
extern int optind;
extern char* optarg;
int fifo, c;
char* spooldir = FAX_SPOOLDIR;
u_int caps;
char canpoll = 'P'; /* can poll by default */
char devname[80];
int cmdlen, pdevlen;
char cmd[80];
const char* usage = "[-c fax-capabilities] [-p] [-P] [-u priority] [-q queue-dir]";
char* cp;
int facility = LOG_DAEMON;
int priority = -1;
(void) cvtFacility(LOG_FAX, &facility);
openlog(argv[0], LOG_PID|LOG_ODELAY, facility);
/*
* Setup defaults:
*
* (vr),(br),(wd),(ln),(df),(ec),(bf),(st)
* where,
* vr vertical resolution
* br bit rate
* wd page width
* ln page length
* df data compression
* ec error correction
* bf binary file transfer
* st scan time/line
*/
parseCapabilities("(0,1),(0-3),(0-4),(0-2),(0),(0),(0),(0-7)", &caps);
while ((c = getopt(argc, argv, "c:q:u:pP")) != -1)
switch (c) {
case 'c':
if (!parseCapabilities(optarg, &caps))
fatal("Syntax error parsing Class 2 capabilities string \"%s\"",
optarg);
break;
case 'p':
case 'P':
canpoll = c;
break;
case 'q':
spooldir = optarg;
break;
case 'u':
priority = atoi(optarg);
break;
case '?':
fatal("usage: %s %s modem", argv[0], usage);
/*NOTREACHED*/
}
if (optind != argc-1) {
fatal("Missing modem device.\nusage: %s %s modem", argv[0], usage);
}
pdevlen = strlen(_PATH_DEV);
if (strncmp(argv[optind], _PATH_DEV, pdevlen) == 0) {
if (strlen(argv[optind] + pdevlen) < sizeof(devname)) {
strcpy(devname, argv[optind] + pdevlen);
} else {
fatal("Argument is too long: %s", argv[optind] + pdevlen);
}
} else {
if (strlen(argv[optind]) < sizeof(devname)) {
strcpy(devname, argv[optind]);
} else {
fatal("Argument is too long: %s", argv[optind]);
}
}
for (cp = devname; (cp = strchr(cp, '/')); *cp++ = '_')
;
if (chdir(spooldir) < 0) {
fatal("%s: chdir: %s", spooldir, strerror(errno));
}
fifo = open(FAX_FIFO, O_WRONLY|O_NDELAY);
if (fifo < 0) {
fatal("%s: open: %s", FAX_FIFO, strerror(errno));
}
if (priority != -1) {
cmdlen = snprintf(cmd, sizeof(cmd), "+%s:R%c%08x:%x", devname, canpoll, caps, priority);
} else {
cmdlen = snprintf(cmd, sizeof(cmd), "+%s:R%c%08x", devname, canpoll, caps);
}
if (cmdlen < 0 || cmdlen > sizeof(cmd) || write(fifo, cmd, cmdlen) != cmdlen) {
fatal("%s: FIFO write failed for command (%s)",
argv[0], strerror(errno));
}
(void) close(fifo);
return 0;
}
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