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CCD_Capture/server.c

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/*
* This file is part of the CCD_Capture project.
* Copyright 2022 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdatomic.h>
#include <netdb.h>
#include <pthread.h>
#include <poll.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <usefull_macros.h>
#include "ccdfunc.h"
#include "cmdlnopts.h"
#include "server.h"
#include "socket.h"
static atomic_int camdevno = 0, wheeldevno = 0, focdevno = 0; // current devices numbers
static _Atomic camera_state camstate = CAMERA_IDLE;
#define FLAG_STARTCAPTURE (1<<0)
#define FLAG_CANCEL (1<<1)
#define FLAG_RESTARTSERVER (1<<2)
static atomic_int camflags = 0, camfanspd = 0, confio = 0, nflushes;
static char *outfile = NULL, *lastfile = NULL; // current output file name/prefix; last name of saved file
//static pthread_mutex_t locmutex = PTHREAD_MUTEX_INITIALIZER; // mutex for wheel/camera/focuser functions
static frameformat frmformatmax = {0}, curformat = {0}; // maximal format
static void *camdev = NULL, *focdev = NULL, *wheeldev = NULL;
static float focmaxpos = 0., focminpos = 0.; // focuser extremal positions
static int wmaxpos = 0.; // wheel max pos
static float tremain = 0.; // time when capture done
typedef struct{
const char *key;
const char *help;
}strpair;
// cat | awk '{print "{ " $3 ", \"\" }," }' | sort
strpair allcommands[] = {
{ CMD_8BIT, "run in 8 bit mode instead of 16 bit" },
{ CMD_AUTHOR, "FITS 'AUTHOR' field" },
{ CMD_BRIGHTNESS, "camera brightness" },
{ CMD_CAMDEVNO, "camera device number" },
{ CMD_CAMLIST, "list all connected cameras" },
{ CMD_CAMFANSPD, "fan speed of camera" },
{ CMD_CONFIO, "camera IO configuration" },
{ CMD_DARK, "don't open shutter @ exposure" },
{ CMD_EXPSTATE, "get exposition state" },
{ CMD_EXPOSITION, "exposition time" },
{ CMD_FASTSPD, "fast readout speed" },
{ CMD_FILENAME, "save file with this name, like file.fits" },
{ CMD_FILENAMEPREFIX,"prefix of files, like ex (will be saved as exXXXX.fits)" },
{ CMD_FDEVNO, "focuser device number" },
{ CMD_FOCLIST, "list all connected focusers" },
{ CMD_FGOTO, "focuser position" },
{ CMD_FRAMEFORMAT, "camera frame format (X0,Y0,X1,Y1)" },
{ CMD_GAIN, "camera gain" },
{ CMD_HBIN, "horizontal binning" },
{ CMD_HEADERFILES, "add FITS records from these files (comma-separated list)" },
{ CMD_HELP, "show this help" },
{ CMD_INFO, "connected devices state" },
{ CMD_INSTRUMENT, "FITS 'INSTRUME' field" },
{ CMD_IO, "get/set camera IO" },
{ CMD_LASTFNAME, "path to last saved file"},
{ CMD_FRAMEMAX, "camera maximal available format" },
{ CMD_NFLUSHES, "camera number of preflushes" },
{ CMD_OBJECT, "FITS 'OBJECT' field" },
{ CMD_OBJTYPE, "FITS 'IMAGETYP' field" },
{ CMD_OBSERVER, "FITS 'OBSERVER' field" },
{ CMD_PROGRAM, "FITS 'PROG-ID' field" },
{ CMD_RESTART, "restart server" },
{ CMD_REWRITE, "rewrite file (if give `filename`, not `filenameprefix`" },
{ CMD_SHUTTER, "camera shutter's operations" },
{ CMD_CAMTEMPER, "camera chip temperature" },
{ CMD_TREMAIN, "time (in seconds) of exposition remained" },
{ CMD_VBIN, "vertical binning" },
{ CMD_WDEVNO, "wheel device number" },
{ CMD_WLIST, "list all connected wheels" },
{ CMD_WPOS, "wheel position" },
{NULL, NULL},
};
static IMG ima = {0};
static void fixima(){
FNAME();
if(!camera) return;
int raw_width = curformat.w / GP->hbin, raw_height = curformat.h / GP->vbin;
if(!ima.data) ima.data = MALLOC(uint16_t, camera->array.h * camera->array.w);
if(ima.data && raw_width == ima.w && raw_height == ima.h) return; // all OK
DBG("curformat: %dx%d", curformat.w, curformat.h);
ima.h = raw_height;
ima.w = raw_width;
DBG("new image: %dx%d", raw_width, raw_height);
}
// functions for processCAM finite state machine
static inline void cameraidlestate(){ // idle - wait for capture commands
if(camflags & FLAG_STARTCAPTURE){ // start capturing
DBG("Start exposition");
camflags &= ~(FLAG_STARTCAPTURE | FLAG_CANCEL);
camstate = CAMERA_CAPTURE;
camera->cancel();
fixima();
if(!camera->startexposition()){
LOGERR("Can't start exposition");
WARNX(_("Can't start exposition"));
camstate = CAMERA_ERROR;
return;
}
}
}
static inline void cameracapturestate(){ // capturing - wait for exposition ends
if(camflags & FLAG_CANCEL){ // cancel all expositions
DBG("Cancel exposition");
LOGMSG("User canceled exposition");
camflags &= ~(FLAG_STARTCAPTURE | FLAG_CANCEL);
camera->cancel();
camstate = CAMERA_IDLE;
return;
}
capture_status cs;
if(camera->pollcapture(&cs, &tremain)){
if(cs != CAPTURE_PROCESS){
DBG("Capture ready");
tremain = 0.;
// now save frame
if(!ima.data) LOGERR("Can't save image: not initialized");
else{
if(!camera->capture(&ima)) LOGERR("Can't capture image");
else{
calculate_stat(&ima);
if(saveFITS(&ima, &lastfile)){
DBG("LAST file name changed");
camstate = CAMERA_FRAMERDY;
return;
}
}
}
camstate = CAMERA_ERROR;
}
}
}
// base camera thread
static void* processCAM(_U_ void *d){
if(!camera){
LOGERR("No camera device");
ERRX(_("No camera device"));
}
double logt = 0;
while(1){
if(camflags & FLAG_RESTARTSERVER){
LOGERR("User asks to restart");
signals(1);
}
usleep(100);
if(0 == pthread_mutex_trylock(&locmutex)){
// log
if(dtime() - logt > TLOG_PAUSE){
logt = dtime();
float t;
if(camera->getTcold(&t)){
LOGMSG("CCDTEMP=%.1f", t);
}
if(camera->getThot(&t)){
LOGMSG("HOTTEMP=%.1f", t);
}
if(camera->getTbody(&t)){
LOGMSG("BODYTEMP=%.1f", t);
}
}
camera_state curstate = camstate;
switch(curstate){
case CAMERA_IDLE:
cameraidlestate();
break;
case CAMERA_CAPTURE:
cameracapturestate();
break;
case CAMERA_FRAMERDY:
// do nothing: when `server` got this state it sends "expstate=2" to all clients and changes state to IDLE
break;
case CAMERA_ERROR:
// do nothing: when `server` got this state it sends "expstate=3" to all clients and changes state to IDLE
break;
}
pthread_mutex_unlock(&locmutex);
}
}
return NULL;
}
// functions running @ each devno change
static int camdevini(int n){
if(!camera) return FALSE;
if(!camera->setDevNo(n)){
LOGERR("Can't set active camera number");
return FALSE;
}
camdevno = n;
LOGMSG("Set camera device number to %d", camdevno);
frameformat step;
camera->getgeomlimits(&frmformatmax, &step);
curformat = frmformatmax;
if(GP->hbin < 1) GP->hbin = 1;
if(GP->vbin < 1) GP->vbin = 1;
fixima();
if(!camera->setbin(GP->hbin, GP->vbin)) WARNX(_("Can't set binning %dx%d"), GP->hbin, GP->vbin);
if(!camera->setgeometry(&curformat)) WARNX(_("Can't set given geometry"));
return TRUE;
}
static int focdevini(int n){
if(!focuser) return FALSE;
if(!focuser->setDevNo(n)){
LOGERR("Can't set active focuser number");
return FALSE;
}
focdevno = n;
LOGMSG("Set focuser device number to %d", focdevno);
focuser->getMaxPos(&focmaxpos);
focuser->getMinPos(&focminpos);
return TRUE;
}
static int wheeldevini(int n){
if(!wheel) return FALSE;
if(!wheel->setDevNo(n)){
LOGERR("Can't set active wheel number");
return FALSE;
}
wheeldevno = n;
LOGMSG("Set wheel device number to %d", wheeldevno);
wheel->getMaxPos(&wmaxpos);
return TRUE;
}
/*******************************************************************************
*************************** Service handlers **********************************
******************************************************************************/
static hresult restarthandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
camflags |= FLAG_RESTARTSERVER;
return RESULT_OK;
}
/*******************************************************************************
*************************** CCD/CMOS handlers *********************************
******************************************************************************/
static hresult camlisthandler(int fd, _U_ const char *key, _U_ const char *val){
char buf[BUFSIZ], modname[256];
for(int i = 0; i < camera->Ndevices; ++i){
if(!camera->setDevNo(i)) continue;
camera->getModelName(modname, 255);
snprintf(buf, BUFSIZ-1, CMD_CAMLIST "='%s'", modname);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
if(camdevno > -1) camera->setDevNo(camdevno);
return RESULT_SILENCE;
}
static hresult camsetNhandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
if(val){
int num = atoi(val);
if(num > camera->Ndevices - 1 || num < 0){
return RESULT_BADVAL;
}
if(!camdevini(num)) return RESULT_FAIL;
}
snprintf(buf, 63, CMD_CAMDEVNO "=%d", camdevno);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
// exposition time setter/getter
static hresult exphandler(int fd, _U_ const char *key, const char *val){
char buf[64];
if(val){
DBG("setexp to %s", val);
double v = atof(val);
if(v < DBL_EPSILON) return RESULT_BADVAL;
if(camera->setexp(v)){
GP->exptime = v;
}else LOGWARN("Can't set exptime to %g", v);
}
DBG("expt: %g", GP->exptime);
snprintf(buf, 63, CMD_EXPOSITION "=%g", GP->exptime);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
// show last filename of saved FITS
static hresult lastfnamehandler(int fd, _U_ const char *key, _U_ const char *val){
char buf[PATH_MAX+32];
snprintf(buf, PATH_MAX+31, CMD_LASTFNAME "=%s", lastfile);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
// filename setter/getter
static hresult namehandler(int fd, _U_ const char *key, const char *val){
char buf[PATH_MAX+32];
if(val){
char *path = makeabspath(val, FALSE);
if(!path){
LOGERR("Can't create file '%s'", val);
return RESULT_BADVAL;
}
FREE(outfile);
outfile = strdup(path);
GP->outfile = outfile;
GP->outfileprefix = NULL;
}
if(!GP->outfile) return RESULT_FAIL;
snprintf(buf, PATH_MAX+31, CMD_FILENAME "=%s", GP->outfile);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
// filename prefix
static hresult nameprefixhandler(_U_ int fd, _U_ const char *key, const char *val){
char buf[PATH_MAX+32];
if(val){
char *path = makeabspath(val, FALSE);
if(!path){
LOGERR("Can't create file '%s'", val);
//pthread_mutex_unlock(&locmutex);
return RESULT_BADVAL;
}
FREE(outfile);
outfile = strdup(path);
GP->outfileprefix = outfile;
GP->outfile = NULL;
}
if(!GP->outfileprefix) return RESULT_FAIL;
snprintf(buf, PATH_MAX+31, CMD_FILENAMEPREFIX "=%s", GP->outfileprefix);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
// rewrite
static hresult rewritefilehandler(_U_ int fd, _U_ const char *key, const char *val){
char buf[64];
if(val){
int n = atoi(val);
if(n < 0 || n > 1) return RESULT_BADVAL;
GP->rewrite = n;
}
snprintf(buf, 63, CMD_REWRITE "=%d", GP->rewrite);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult binhandler(_U_ int fd, const char *key, const char *val){
char buf[64];
if(val){
int b = atoi(val);
if(b < 1) return RESULT_BADVAL;
if(0 == strcmp(key, CMD_HBIN)) GP->hbin = b;
else GP->vbin = b;
if(!camera->setbin(GP->hbin, GP->vbin)){
return RESULT_BADVAL;
}
}
int r = camera->getbin(&GP->hbin, &GP->vbin);
if(r){
if(0 == strcmp(key, CMD_HBIN)) snprintf(buf, 63, "%s=%d", key, GP->hbin);
else snprintf(buf, 63, "%s=%d", key, GP->vbin);
if(val) fixima();
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
return RESULT_FAIL;
}
static hresult temphandler(_U_ int fd, _U_ const char *key, const char *val){
float f;
char buf[64];
int r;
if(val){
f = atof(val);
r = camera->setT((float)f);
if(!r){
LOGWARN("Can't set camera T to %.1f", f);
return RESULT_FAIL;
}
LOGMSG("Set camera T to %.1f", f);
}
r = camera->getTcold(&f);
if(r){
snprintf(buf, 63, CMD_CAMTEMPER "=%.1f", f);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
r = camera->getTbody(&f);
if(r){
snprintf(buf, 63, "tbody=%.1f", f);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
r = camera->getThot(&f);
if(r){
snprintf(buf, 63, "thot=%.1f", f);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
return RESULT_SILENCE;
}else return RESULT_FAIL;
}
static hresult camfanhandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
if(val){
int spd = atoi(val);
if(spd < 0) return RESULT_BADVAL;
if(spd > FAN_HIGH) spd = FAN_HIGH;
int r = camera->setfanspeed((fan_speed)spd);
if(!r) return RESULT_FAIL;
camfanspd = spd;
}
snprintf(buf, 63, CMD_CAMFANSPD "=%d", camfanspd);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
const char *shutterstr[] = {"open", "close", "expose @high", "expose @low"};
static hresult shutterhandler(_U_ int fd, _U_ const char *key, const char *val){
if(val){
int x = atoi(val);
if(x < 0 || x >= SHUTTER_AMOUNT) return RESULT_BADVAL;
int r = camera->shuttercmd((shutter_op)x);
if(r){
LOGMSG("Shutter command '%s'", shutterstr[x]);
}else{
LOGWARN("Can't run shutter command '%s'", shutterstr[x]);
return RESULT_FAIL;
}
}
return RESULT_OK;
}
static hresult confiohandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
if(val){
int io = atoi(val);
int r = camera->confio(io);
if(!r) return RESULT_FAIL;
confio = io;
}
snprintf(buf, 63, CMD_CONFIO "=%d", confio);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult iohandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
int io;
if(val){
io = atoi(val);
int r = camera->setio(io);
if(!r) return RESULT_FAIL;
}
int r = camera->getio(&io);
if(!r) return RESULT_FAIL;
snprintf(buf, 63, CMD_IO "=%d", io);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult gainhandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
float f;
if(val){
f = atof(val);
int r = camera->setgain(f);
if(!r) return RESULT_FAIL;
}
int r = camera->getgain(&f);
if(!r) return RESULT_FAIL;
snprintf(buf, 63, CMD_GAIN "=%.1f", f);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult brightnesshandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
float b;
if(val){
b = atof(val);
int r = camera->setbrightness(b);
if(!r) return RESULT_FAIL;
}
int r = camera->getbrightness(&b);
if(!r) return RESULT_FAIL;
snprintf(buf, 63, CMD_BRIGHTNESS "=%.1f", b);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
// set format: `format=X0,X1,Y0,Y1`
// get geomlimits: `maxformat=X0,X1,Y0,Y1`
static hresult formathandler(int fd, const char *key, const char *val){
char buf[64];
frameformat fmt;
if(val){
if(strcmp(key, CMD_FRAMEFORMAT)) return RESULT_BADKEY; // can't set maxformat
if(4 != sscanf(val, "%d,%d,%d,%d", &fmt.xoff, &fmt.yoff, &fmt.w, &fmt.h)) return RESULT_BADVAL;
fmt.w -= fmt.xoff; fmt.h -= fmt.yoff;
int r = camera->setgeometry(&fmt);
if(!r) return RESULT_FAIL;
curformat = fmt;
fixima();
}
if(0 == strcmp(key, CMD_FRAMEMAX)) snprintf(buf, 63, CMD_FRAMEMAX "=%d,%d,%d,%d",
frmformatmax.xoff, frmformatmax.yoff, frmformatmax.xoff+frmformatmax.w, frmformatmax.yoff+frmformatmax.h);
else snprintf(buf, 63, CMD_FRAMEFORMAT "=%d,%d,%d,%d",
camera->geometry.xoff, camera->geometry.yoff, camera->geometry.xoff+camera->geometry.w, camera->geometry.yoff+camera->geometry.h);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult nflusheshandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
if(val){
int n = atoi(val);
if(n < 1) return RESULT_BADVAL;
if(!camera->setnflushes(n)){
return RESULT_FAIL;
}
nflushes = n;
}
snprintf(buf, 63, CMD_NFLUSHES "=%d", nflushes);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult expstatehandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
if(val){
int n = atoi(val);
if(n == CAMERA_IDLE){ // cancel expositions
camflags |= FLAG_CANCEL;
return RESULT_OK;
}
else if(n == CAMERA_CAPTURE){ // start exposition
camflags |= FLAG_STARTCAPTURE;
return RESULT_OK;
}
else return RESULT_BADVAL;
}
snprintf(buf, 63, CMD_EXPSTATE "=%d", camstate);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
snprintf(buf, 63, "camflags=%d", camflags);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult tremainhandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
snprintf(buf, 63, CMD_TREMAIN "=%g", tremain);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult _8bithandler(int fd, _U_ const char *key, const char *val){
char buf[64];
if(val){
int s = atoi(val);
if(s != 0 && s != 1) return RESULT_BADVAL;
GP->_8bit = s;
s = !s;
if(!camera->setbitdepth(s)) return RESULT_FAIL;
}
snprintf(buf, 63, CMD_8BIT "=%d", GP->_8bit);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult fastspdhandler(int fd, _U_ const char *key, const char *val){
char buf[64];
if(val){
int b = atoi(val);
if(b != 0 && b != 1) return RESULT_BADVAL;
GP->fast = b;
if(!camera->setfastspeed(b)) return RESULT_FAIL;
}
snprintf(buf, 63, CMD_FASTSPD "=%d", GP->fast);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult darkhandler(int fd, _U_ const char *key, const char *val){
char buf[64];
if(val){
int d = atoi(val);
if(d != 0 && d != 1) return RESULT_BADVAL;
GP->dark = d;
d = !d;
if(!camera->setframetype(d)) return RESULT_FAIL;
}
snprintf(buf, 63, CMD_DARK "=%d", GP->dark);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult FITSparhandler(int fd, const char *key, const char *val){
char buf[256], **fitskey = NULL;
if(0 == strcmp(key, CMD_AUTHOR)){
fitskey = &GP->author;
}else if(0 == strcmp(key, CMD_INSTRUMENT)){
fitskey = &GP->instrument;
}else if(0 == strcmp(key, CMD_OBSERVER)){
fitskey = &GP->observers;
}else if(0 == strcmp(key, CMD_OBJECT)){
fitskey = &GP->objname;
}else if(0 == strcmp(key, CMD_PROGRAM)){
fitskey = &GP->prog_id;
}else if(0 == strcmp(key, CMD_OBJTYPE)){
fitskey = &GP->objtype;
}else return RESULT_BADKEY;
if(val){
FREE(*fitskey);
*fitskey = strdup(val);
}
snprintf(buf, 255, "%s=%s", key, *fitskey);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult FITSheaderhandler(int fd, _U_ const char *key, const char *val){
char buf[BUFSIZ], **sptr;
static char *curhdr = NULL;
static int firstrun = 1;
if(val){
int sz = 10, amount = 0;
// first we should check `val`
char b2[BUFSIZ], *bptr = buf;
snprintf(b2, BUFSIZ-1, "%s", val);
char **list = MALLOC(char*, sz), **lptr = list;
int L = BUFSIZ;
for(char *s = b2; ; s = NULL){
char *tok = strtok(s, ",;");
if(!tok){
*lptr = NULL;
break;
}
// check path
char *newpath = makeabspath(tok, TRUE);
DBG("next token: %s, path: %s", tok, newpath);
if(!newpath){ // error! Free list and return err
DBG("No such file");
sptr = list;
while(*sptr){
FREE(*sptr++);
}
FREE(list);
//pthread_mutex_unlock(&locmutex);
return RESULT_BADVAL;
}
*lptr++ = strdup(newpath);
if(++amount == sz){
DBG("Realloc");
sz += 10;
list = realloc(list, sz*sizeof(char*));
bzero(&list[sz-10], 10*sizeof(char*));
}
int N = snprintf(bptr, L-1, "%s,", newpath);
bptr += N; L -= N;
}
// free old list and change its value
if(GP->addhdr){
DBG("Free old list");
sptr = GP->addhdr;
while(*sptr){
DBG("Free %s", *sptr);
free(*(sptr++));
}
}
GP->addhdr = list;
FREE(curhdr);
if(*val && *val != ',') curhdr = strdup(buf); // command with empty arg will clear curhdr
DBG("curhdr now: %s", curhdr);
}
if(!curhdr && firstrun){
firstrun = 0;
if(GP->addhdr && *GP->addhdr){
char *ptr = buf;
int L = BUFSIZ;
sptr = GP->addhdr;
while(*sptr){
DBG("Add to curhdr: %s", *sptr);
int N = snprintf(ptr, L-1, "%s,", *sptr++);
L -= N; ptr += N;
}
curhdr = strdup(buf);
}
}
snprintf(buf, BUFSIZ-1, CMD_HEADERFILES "=%s", curhdr);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
/*
static hresult handler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
return RESULT_SILENCE;
}
*/
/*******************************************************************************
***************************** Wheel handlers **********************************
******************************************************************************/
static hresult wlisthandler(int fd, _U_ const char *key, _U_ const char *val){
if(wheel->Ndevices < 1) return RESULT_FAIL;
for(int i = 0; i < wheel->Ndevices; ++i){
if(!wheel->setDevNo(i)) continue;
char modname[256], buf[BUFSIZ];
wheel->getModelName(modname, 255);
snprintf(buf, BUFSIZ-1, CMD_WLIST "='%s'", modname);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
if(wheeldevno > -1) wheel->setDevNo(wheeldevno);
return RESULT_SILENCE;
}
static hresult wsetNhandler(int fd, _U_ const char *key, const char *val){
char buf[64];
if(val){
int num = atoi(val);
if(num > wheel->Ndevices - 1 || num < 0){
return RESULT_BADVAL;
}
if(!wheeldevini(num)) return RESULT_FAIL;
}
snprintf(buf, 63, CMD_WDEVNO "=%d", wheeldevno);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult wgotohandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
char buf[64];
int pos;
if(val){
pos = atoi(val);
DBG("USER wants to %d", pos);
int r = wheel->setPos(pos);
DBG("wheel->setPos(%d)", pos);
if(!r) return RESULT_BADVAL;
}
int r = wheel->getPos(&pos);
if(!r) return RESULT_FAIL;
snprintf(buf, 63, CMD_WPOS "=%d", pos);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
/*******************************************************************************
**************************** Focuser handlers *********************************
******************************************************************************/
static hresult foclisthandler(int fd, _U_ const char *key, _U_ const char *val){
if(focuser->Ndevices < 1) return RESULT_FAIL;
for(int i = 0; i < focuser->Ndevices; ++i){
char modname[256], buf[BUFSIZ];
if(!focuser->setDevNo(i)) continue;
focuser->getModelName(modname, 255);
snprintf(buf, BUFSIZ-1, CMD_FOCLIST "='%s'", modname);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
if(focdevno > -1) focuser->setDevNo(focdevno);
return RESULT_SILENCE;
}
static hresult fsetNhandler(int fd, _U_ const char *key, const char *val){
char buf[64];
if(val){
int num = atoi(val);
if(num > focuser->Ndevices - 1 || num < 0){
return RESULT_BADVAL;
}
if(!focdevini(num)) return RESULT_FAIL;
}
snprintf(buf, 63, CMD_FDEVNO "=%d", focdevno);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
static hresult fgotohandler(int fd, _U_ const char *key, const char *val){
char buf[64];
float f;
int r;
if(val){
f = atof(val);
if(f < focminpos || f > focmaxpos) return RESULT_BADVAL;
if(f - focminpos < __FLT_EPSILON__){
r = focuser->home(1);
}else{
r = focuser->setAbsPos(1, f);
}
if(!r) return RESULT_FAIL;
}
r = focuser->getPos(&f);
if(!r) return RESULT_FAIL;
snprintf(buf, 63, CMD_FGOTO "=%g", f);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
return RESULT_SILENCE;
}
/*******************************************************************************
**************************** Common handlers **********************************
******************************************************************************/
// information about everything
static hresult infohandler(int fd, _U_ const char *key, _U_ const char *val){
char buf[BUFSIZ], buf1[256];
float f;
int i;
if(camera){
if(camera->getModelName(buf1, 255)){
snprintf(buf, BUFSIZ-1, CMD_CAMLIST "='%s'", buf1);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
#define RUN(f, arg) do{if(RESULT_DISCONNECTED == f(fd, arg, NULL)) return RESULT_DISCONNECTED;}while(0)
RUN(namehandler, CMD_FILENAME);
RUN(binhandler, CMD_HBIN);
RUN(binhandler, CMD_VBIN);
RUN(temphandler, CMD_CAMTEMPER);
RUN(exphandler, CMD_EXPOSITION);
RUN(lastfnamehandler, CMD_LASTFNAME);
RUN(expstatehandler, CMD_EXPSTATE);
#undef RUN
}
DBG("chk wheel");
if(wheel){
DBG("Wname");
if(wheel->getModelName(buf1, 255)){
snprintf(buf, BUFSIZ-1, CMD_WLIST "='%s'", buf1);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
if(wheel->getTbody(&f)){
snprintf(buf, BUFSIZ-1, "wtemp=%.1f", f);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
if(wheel->getPos(&i)){
snprintf(buf, BUFSIZ-1, CMD_WPOS "=%d", i);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
snprintf(buf, BUFSIZ-1, "wmaxpos=%d", wmaxpos);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
if(focuser){
if(focuser->getModelName(buf1, 255)){
snprintf(buf, BUFSIZ-1, CMD_FOCLIST "='%s'", buf1);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
if(focuser->getTbody(&f)){
snprintf(buf, BUFSIZ-1, "foctemp=%.1f", f);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
snprintf(buf, BUFSIZ-1, "focminpos=%g", focminpos);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
snprintf(buf, BUFSIZ-1, "focmaxpos=%g", focmaxpos);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
if(focuser->getPos(&f)){
snprintf(buf, BUFSIZ-1, CMD_FGOTO "=%g", f);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
}
}
return RESULT_SILENCE;
}
// show help
static hresult helphandler(int fd, _U_ const char *key, _U_ const char *val){
char buf[256];
strpair *ptr = allcommands;
while(ptr->key){
snprintf(buf, 255, "%s - %s", ptr->key, ptr->help);
if(!sendstrmessage(fd, buf)) return RESULT_DISCONNECTED;
++ptr;
}
return RESULT_SILENCE;
}
// for setters: do nothing when camera not in idle state
static int CAMbusy(){
if(camera && camstate != CAMERA_IDLE){
DBG("Camera busy");
return TRUE;
}
return FALSE;
}
// check funtions
static hresult chktrue(_U_ char *val){ // dummy check for `infohandler` (need to lock mutex anymore)
return RESULT_OK;
}
static hresult chkcam(char *val){
if(val && CAMbusy()) return RESULT_BUSY;
if(camera) return RESULT_OK;
return RESULT_FAIL;
}
static hresult chkwhl(char *val){
if(val && CAMbusy()) return RESULT_BUSY;
if(wheel) return RESULT_OK;
return RESULT_FAIL;
}
static hresult chkfoc(char *val){
if(val && CAMbusy()) return RESULT_BUSY;
if(focuser) return RESULT_OK;
return RESULT_FAIL;
}
static handleritem items[] = {
{chktrue,infohandler, CMD_INFO},
{NULL, helphandler, CMD_HELP},
{NULL, restarthandler, CMD_RESTART},
{chkcam, camlisthandler, CMD_CAMLIST},
{chkcam, camsetNhandler, CMD_CAMDEVNO},
{chkcam, camfanhandler, CMD_CAMFANSPD},
{chkcam, exphandler, CMD_EXPOSITION},
{chkcam, namehandler, CMD_FILENAME},
{chkcam, binhandler, CMD_HBIN},
{chkcam, binhandler, CMD_VBIN},
{chkcam, temphandler, CMD_CAMTEMPER},
{chkcam, shutterhandler, CMD_SHUTTER},
{chkcam, confiohandler, CMD_CONFIO},
{chkcam, iohandler, CMD_IO},
{chkcam, gainhandler, CMD_GAIN},
{chkcam, brightnesshandler, CMD_BRIGHTNESS},
{chkcam, formathandler, CMD_FRAMEFORMAT},
{chkcam, formathandler, CMD_FRAMEMAX},
{chkcam, nflusheshandler, CMD_NFLUSHES},
{NULL, expstatehandler, CMD_EXPSTATE},
{chkcam, nameprefixhandler, CMD_FILENAMEPREFIX},
{chkcam, rewritefilehandler, CMD_REWRITE},
{chkcam, _8bithandler, CMD_8BIT},
{chkcam, fastspdhandler, CMD_FASTSPD},
{chkcam, darkhandler, CMD_DARK},
{NULL, tremainhandler, CMD_TREMAIN},
{NULL, FITSparhandler, CMD_AUTHOR},
{NULL, FITSparhandler, CMD_INSTRUMENT},
{NULL, FITSparhandler, CMD_OBSERVER},
{NULL, FITSparhandler, CMD_OBJECT},
{NULL, FITSparhandler, CMD_PROGRAM},
{NULL, FITSparhandler, CMD_OBJTYPE},
{NULL, FITSheaderhandler, CMD_HEADERFILES},
{NULL, lastfnamehandler, CMD_LASTFNAME},
{chkfoc, foclisthandler, CMD_FOCLIST},
{chkfoc, fsetNhandler, CMD_FDEVNO},
{chkfoc, fgotohandler, CMD_FGOTO},
{chkwhl, wlisthandler, CMD_WLIST},
{chkwhl, wsetNhandler, CMD_WDEVNO},
{chkwhl, wgotohandler, CMD_WPOS},
{NULL, NULL, NULL},
};
#define CLBUFSZ BUFSIZ
void server(int sock){
// init everything
startFocuser(&focdev);
focdevini(0);
startWheel(&wheeldev);
wheeldevini(0);
startCCD(&camdev);
camdevini(0);
if(listen(sock, MAXCLIENTS) == -1){
WARN("listen");
LOGWARN("listen");
return;
}
// start camera thread
pthread_t camthread;
if(camera){
if(pthread_create(&camthread, NULL, processCAM, NULL)) ERR("pthread_create()");
}
int nfd = 1; // only one socket @start
struct pollfd poll_set[MAXCLIENTS+1];
char buffers[MAXCLIENTS][CLBUFSZ]; // buffers for data reading
bzero(poll_set, sizeof(poll_set));
// ZERO - listening server socket
poll_set[0].fd = sock;
poll_set[0].events = POLLIN;
while(1){
poll(poll_set, nfd, 1); // max timeout - 1ms
if(poll_set[0].revents & POLLIN){ // check main for accept()
struct sockaddr_in addr;
socklen_t len = sizeof(addr);
int client = accept(sock, (struct sockaddr*)&addr, &len);
DBG("New connection");
LOGMSG("SERVER got connection, fd=%d", client);
if(nfd == MAXCLIENTS + 1){
LOGWARN("Max amount of connections, disconnect fd=%d", client);
WARNX("Limit of connections reached");
close(client);
}else{
memset(&poll_set[nfd], 0, sizeof(struct pollfd));
poll_set[nfd].fd = client;
poll_set[nfd].events = POLLIN;
++nfd;
}
}
// process some data & send messages to ALL
if(camstate == CAMERA_FRAMERDY || camstate == CAMERA_ERROR){
char buff[PATH_MAX+32];
snprintf(buff, PATH_MAX, CMD_EXPSTATE "=%d", camstate);
DBG("Send %s to %d clients", buff, nfd - 1);
for(int i = 1; i < nfd; ++i)
sendstrmessage(poll_set[i].fd, buff);
if(camstate == CAMERA_FRAMERDY){ // send to all last file name
snprintf(buff, PATH_MAX+31, CMD_LASTFNAME "=%s", lastfile);
for(int i = 1; i < nfd; ++i)
sendstrmessage(poll_set[i].fd, buff);
}
camstate = CAMERA_IDLE;
}
// scan connections
for(int fdidx = 1; fdidx < nfd; ++fdidx){
if((poll_set[fdidx].revents & POLLIN) == 0) continue;
int fd = poll_set[fdidx].fd;
if(!processData(fd, items, buffers[fdidx-1], CLBUFSZ)){ // socket closed
DBG("Client fd=%d disconnected", fd);
LOGMSG("SERVER client fd=%d disconnected", fd);
buffers[fdidx-1][0] = 0; // clear rest of data in buffer
close(fd);
// move last FD to current position
poll_set[fdidx] = poll_set[nfd - 1];
--nfd;
}
}
}
focclose(focdev);
closewheel(wheeldev);
closecam(camdev);
}
/**
* @brief makeabspath - convert path to absolute and check it
* @param path - path to file
* @param shoulbe - ==1 if file must exists
* @return abs path or NULL (if can't convert, can't create or file not exists)
*/
char *makeabspath(const char *path, int shouldbe){
static char buf[PATH_MAX+1];
if(!path) return NULL;
char *ret = NULL;
int unl = 0;
FILE *f = fopen(path, "r");
if(!f){
if(shouldbe) return NULL;
f = fopen(path, "a");
if(!f){
WARN("Can't create %s", path);
return NULL;
}
unl = 1;
}
if(!realpath(path, buf)){
WARN("realpath()");
return NULL;
}else ret = buf;
fclose(f);
if(unl) unlink(path);
return ret;
}
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