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stream.c
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/*------------------------------------------------------------------------------
* stream.c : stream input/output functions
*
* Copyright (C) 2008-2014 by T.TAKASU, All rights reserved.
*
* options : -DWIN32 use WIN32 API
* -DSVR_REUSEADDR reuse tcp server address
*
* references :
* [1] RTCM Recommendaed Standards for Networked Transport for RTCM via
* Internet Protocol (Ntrip), Version 1.0, Semptember 30, 2004
* [2] H.Niksic and others, GNU Wget 1.12, The non-iteractive download
* utility, 4 September 2009
*
* version : $Revision:$ $Date:$
* history : 2009/01/16 1.0 new
* 2009/04/02 1.1 support nmea request in ntrip request
* support time-tag of file as stream
* 2009/09/04 1.2 ported to linux environment
* add fflush() to save file stream
* 2009/10/10 1.3 support multiple connection for tcp server
* add keyword replacement in file path
* add function strsendnmea(), strsendcmd()
* 2010/07/18 1.4 support ftp/http stream types
* add keywords replacement of %ha,%hb,%hc in path
* add api: strsetdir(),strsettimeout()
* 2010/08/31 1.5 reconnect after error of ntrip client
* fix bug on no file swap at week start (2.4.0_p6)
* 2011/05/29 1.6 add fast stream replay mode
* add time margin to swap file
* change api strsetopt()
* introduce non_block send for send socket
* add api: strsetproxy()
* 2011/12/21 1.7 fix bug decode tcppath (rtklib_2.4.1_p5)
* 2012/06/09 1.8 fix problem if user or password contains /
* (rtklib_2.4.1_p7)
* 2012/12/25 1.9 compile option SVR_REUSEADDR added
* 2013/03/10 1.10 fix problem with ntrip mountpoint containing "/"
* 2013/04/15 1.11 fix bug on swapping files if swapmargin=0
* 2013/05/28 1.12 fix bug on playback of file with 64 bit size_t
* 2014/05/23 1.13 retry to connect after gethostbyname() error
* fix bug on malloc size in openftp()
* 2014/06/21 1.14 add general hex message rcv command by !HEX ...
* 2014/10/16 1.15 support stdin/stdou for input/output from/to file
* 2014/11/08 1.16 fix getconfig error (87) with bluetooth device
*-----------------------------------------------------------------------------*/
#include <ctype.h>
#include "rtklib.h"
#ifndef WIN32
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/time.h>
#define __USE_MISC
#include <errno.h>
#include <termios.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
static const char rcsid[]="$Id$";
/* constants -----------------------------------------------------------------*/
#define TINTACT 200 /* period for stream active (ms) */
#define SERIBUFFSIZE 4096 /* serial buffer size (bytes) */
#define TIMETAGH_LEN 64 /* time tag file header length */
#define MAXCLI 32 /* max client connection for tcp svr */
#define MAXSTATMSG 32 /* max length of status message */
#define NTRIP_AGENT "RTKLIB/" VER_RTKLIB
#define NTRIP_CLI_PORT 2101 /* default ntrip-client connection port */
#define NTRIP_SVR_PORT 80 /* default ntrip-server connection port */
#define NTRIP_MAXRSP 32768 /* max size of ntrip response */
#define NTRIP_MAXSTR 256 /* max length of mountpoint string */
#define NTRIP_RSP_OK_CLI "ICY 200 OK\r\n" /* ntrip response: client */
#define NTRIP_RSP_OK_SVR "OK\r\n" /* ntrip response: server */
#define NTRIP_RSP_SRCTBL "SOURCETABLE 200 OK\r\n" /* ntrip response: source table */
#define NTRIP_RSP_TBLEND "ENDSOURCETABLE"
#define NTRIP_RSP_HTTP "HTTP/" /* ntrip response: http */
#define NTRIP_RSP_ERROR "ERROR" /* ntrip response: error */
#define FTP_CMD "wget" /* ftp/http command */
#define FTP_TIMEOUT 30 /* ftp/http timeout (s) */
/* macros --------------------------------------------------------------------*/
#ifdef WIN32
#define dev_t HANDLE
#define socket_t SOCKET
typedef int socklen_t;
#else
#define dev_t int
#define socket_t int
#define closesocket close
#endif
/* type definition -----------------------------------------------------------*/
typedef struct { /* serial control type */
dev_t dev; /* serial device */
int error; /* error state */
#ifdef WIN32
int state,wp,rp; /* state,write/read pointer */
int buffsize; /* write buffer size (bytes) */
HANDLE thread; /* write thread */
lock_t lock; /* lock flag */
unsigned char *buff; /* write buffer */
#endif
} serial_t;
typedef struct { /* file control type */
FILE *fp; /* file pointer */
FILE *fp_tag; /* file pointer of tag file */
FILE *fp_tmp; /* temporary file pointer for swap */
FILE *fp_tag_tmp; /* temporary file pointer of tag file for swap */
char path[MAXSTRPATH]; /* file path */
char openpath[MAXSTRPATH]; /* open file path */
int mode; /* file mode */
int timetag; /* time tag flag (0:off,1:on) */
int repmode; /* replay mode (0:master,1:slave) */
int offset; /* time offset (ms) for slave */
gtime_t time; /* start time */
gtime_t wtime; /* write time */
unsigned int tick; /* start tick */
unsigned int tick_f; /* start tick in file */
unsigned int fpos; /* current file position */
double start; /* start offset (s) */
double speed; /* replay speed (time factor) */
double swapintv; /* swap interval (hr) (0: no swap) */
lock_t lock; /* lock flag */
} file_t;
typedef struct { /* tcp control type */
int state; /* state (0:close,1:wait,2:connect) */
char saddr[256]; /* address string */
int port; /* port */
struct sockaddr_in addr; /* address resolved */
socket_t sock; /* socket descriptor */
int tcon; /* reconnect time (ms) (-1:never,0:now) */
unsigned int tact; /* data active tick */
unsigned int tdis; /* disconnect tick */
} tcp_t;
typedef struct { /* tcp server type */
tcp_t svr; /* tcp server control */
tcp_t cli[MAXCLI]; /* tcp client controls */
} tcpsvr_t;
typedef struct { /* tcp cilent type */
tcp_t svr; /* tcp server control */
int toinact; /* inactive timeout (ms) (0:no timeout) */
int tirecon; /* reconnect interval (ms) (0:no reconnect) */
} tcpcli_t;
typedef struct { /* ntrip control type */
int state; /* state (0:close,1:wait,2:connect) */
int type; /* type (0:server,1:client) */
int nb; /* response buffer size */
char url[256]; /* url for proxy */
char mntpnt[256]; /* mountpoint */
char user[256]; /* user */
char passwd[256]; /* password */
char str[NTRIP_MAXSTR]; /* mountpoint string for server */
unsigned char buff[NTRIP_MAXRSP]; /* response buffer */
tcpcli_t *tcp; /* tcp client */
} ntrip_t;
typedef struct { /* ftp download control type */
int state; /* state (0:close,1:download,2:complete,3:error) */
int proto; /* protocol (0:ftp,1:http) */
int error; /* error code (0:no error,1-10:wget error, */
/* 11:no temp dir,12:uncompact error) */
char addr[1024]; /* download address */
char file[1024]; /* download file path */
char user[256]; /* user for ftp */
char passwd[256]; /* password for ftp */
char local[1024]; /* local file path */
int topts[4]; /* time options {poff,tint,toff,tretry} (s) */
gtime_t tnext; /* next retry time (gpst) */
thread_t thread; /* download thread */
} ftp_t;
/* global options ------------------------------------------------------------*/
static int toinact =10000; /* inactive timeout (ms) */
static int ticonnect=10000; /* interval to re-connect (ms) */
static int tirate =1000; /* avraging time for data rate (ms) */
static int buffsize =32768; /* receive/send buffer size (bytes) */
static char localdir[1024]=""; /* local directory for ftp/http */
static char proxyaddr[256]=""; /* http/ntrip/ftp proxy address */
static unsigned int tick_master=0; /* time tick master for replay */
static int fswapmargin=30; /* file swap margin (s) */
/* read/write serial buffer --------------------------------------------------*/
#ifdef WIN32
static int readseribuff(serial_t *serial, unsigned char *buff, int nmax)
{
int ns;
tracet(5,"readseribuff: dev=%d\n",serial->dev);
lock(&serial->lock);
for (ns=0;serial->rp!=serial->wp&&ns<nmax;ns++) {
buff[ns]=serial->buff[serial->rp];
if (++serial->rp>=serial->buffsize) serial->rp=0;
}
unlock(&serial->lock);
tracet(5,"readseribuff: ns=%d rp=%d wp=%d\n",ns,serial->rp,serial->wp);
return ns;
}
static int writeseribuff(serial_t *serial, unsigned char *buff, int n)
{
int ns,wp;
tracet(5,"writeseribuff: dev=%d n=%d\n",serial->dev,n);
lock(&serial->lock);
for (ns=0;ns<n;ns++) {
serial->buff[wp=serial->wp]=buff[ns];
if (++wp>=serial->buffsize) wp=0;
if (wp!=serial->rp) serial->wp=wp;
else {
tracet(2,"serial buffer overflow: size=%d\n",serial->buffsize);
break;
}
}
unlock(&serial->lock);
tracet(5,"writeseribuff: ns=%d rp=%d wp=%d\n",ns,serial->rp,serial->wp);
return ns;
}
#endif /* WIN32 */
/* write serial thread -------------------------------------------------------*/
#ifdef WIN32
static DWORD WINAPI serialthread(void *arg)
{
serial_t *serial=(serial_t *)arg;
unsigned char buff[128];
unsigned int tick;
DWORD ns;
int n;
tracet(3,"serialthread:\n");
serial->state=1;
for (;;) {
tick=tickget();
while ((n=readseribuff(serial,buff,sizeof(buff)))>0) {
if (!WriteFile(serial->dev,buff,n,&ns,NULL)) serial->error=1;
}
if (!serial->state) break;
sleepms(10-(int)(tickget()-tick)); /* cycle=10ms */
}
free(serial->buff);
return 0;
}
#endif /* WIN32 */
/* open serial ---------------------------------------------------------------*/
static serial_t *openserial(const char *path, int mode, char *msg)
{
const int br[]={
300,600,1200,2400,4800,9600,19200,38400,57600,115200,230400
};
serial_t *serial;
int i,brate=9600,bsize=8,stopb=1;
char *p,parity='N',dev[128],port[128],fctr[64]="";
#ifdef WIN32
DWORD error,rw=0,siz=sizeof(COMMCONFIG);
COMMCONFIG cc={0};
COMMTIMEOUTS co={MAXDWORD,0,0,0,0}; /* non-block-read */
char dcb[64]="";
#else
const speed_t bs[]={
B300,B600,B1200,B2400,B4800,B9600,B19200,B38400,B57600,B115200,B230400
};
struct termios ios={0};
int rw=0;
#endif
tracet(3,"openserial: path=%s mode=%d\n",path,mode);
if (!(serial=(serial_t *)malloc(sizeof(serial_t)))) return NULL;
if ((p=strchr(path,':'))) {
strncpy(port,path,p-path); port[p-path]='\0';
sscanf(p,":%d:%d:%c:%d:%s",&brate,&bsize,&parity,&stopb,fctr);
}
else strcpy(port,path);
for (i=0;i<11;i++) if (br[i]==brate) break;
if (i>=12) {
sprintf(msg,"bitrate error (%d)",brate);
tracet(1,"openserial: %s path=%s\n",msg,path);
free(serial);
return NULL;
}
parity=(char)toupper((int)parity);
#ifdef WIN32
sprintf(dev,"\\\\.\\%s",port);
if (mode&STR_MODE_R) rw|=GENERIC_READ;
if (mode&STR_MODE_W) rw|=GENERIC_WRITE;
serial->dev=CreateFile(dev,rw,0,0,OPEN_EXISTING,0,NULL);
if (serial->dev==INVALID_HANDLE_VALUE) {
sprintf(msg,"device open error (%d)",(int)GetLastError());
tracet(1,"openserial: %s path=%s\n",msg,path);
free(serial);
return NULL;
}
if (!GetCommConfig(serial->dev,&cc,&siz)) {
sprintf(msg,"getconfig error (%d)",(int)GetLastError());
tracet(1,"openserial: %s\n",msg);
CloseHandle(serial->dev);
free(serial);
return NULL;
}
sprintf(dcb,"baud=%d parity=%c data=%d stop=%d",brate,parity,bsize,stopb);
if (!BuildCommDCB(dcb,&cc.dcb)) {
sprintf(msg,"buiddcb error (%d)",(int)GetLastError());
tracet(1,"openserial: %s\n",msg);
CloseHandle(serial->dev);
free(serial);
return NULL;
}
if (!strcmp(fctr,"rts")) {
cc.dcb.fRtsControl=RTS_CONTROL_HANDSHAKE;
}
SetCommConfig(serial->dev,&cc,siz); /* ignore error to support novatel */
SetCommTimeouts(serial->dev,&co);
ClearCommError(serial->dev,&error,NULL);
PurgeComm(serial->dev,PURGE_TXABORT|PURGE_RXABORT|PURGE_TXCLEAR|PURGE_RXCLEAR);
/* create write thread */
initlock(&serial->lock);
serial->state=serial->wp=serial->rp=serial->error=0;
serial->buffsize=buffsize;
if (!(serial->buff=(unsigned char *)malloc(buffsize))) {
CloseHandle(serial->dev);
free(serial);
return NULL;
}
if (!(serial->thread=CreateThread(NULL,0,serialthread,serial,0,NULL))) {
sprintf(msg,"serial thread error (%d)",(int)GetLastError());
tracet(1,"openserial: %s\n",msg);
CloseHandle(serial->dev);
free(serial);
return NULL;
}
return serial;
#else
sprintf(dev,"/dev/%s",port);
if ((mode&STR_MODE_R)&&(mode&STR_MODE_W)) rw=O_RDWR;
else if (mode&STR_MODE_R) rw=O_RDONLY;
else if (mode&STR_MODE_W) rw=O_WRONLY;
if ((serial->dev=open(dev,rw|O_NOCTTY|O_NONBLOCK))<0) {
sprintf(msg,"device open error (%d)",errno);
tracet(1,"openserial: %s dev=%s\n",msg,dev);
free(serial);
return NULL;
}
tcgetattr(serial->dev,&ios);
ios.c_iflag=0;
ios.c_oflag=0;
ios.c_lflag=0; /* non-canonical */
ios.c_cc[VMIN ]=0; /* non-block-mode */
ios.c_cc[VTIME]=0;
cfsetospeed(&ios,bs[i]);
cfsetispeed(&ios,bs[i]);
ios.c_cflag|=bsize==7?CS7:CS8;
ios.c_cflag|=parity=='O'?(PARENB|PARODD):(parity=='E'?PARENB:0);
ios.c_cflag|=stopb==2?CSTOPB:0;
ios.c_cflag|=!strcmp(fctr,"rts")?CRTSCTS:0;
tcsetattr(serial->dev,TCSANOW,&ios);
tcflush(serial->dev,TCIOFLUSH);
return serial;
#endif
}
/* close serial --------------------------------------------------------------*/
static void closeserial(serial_t *serial)
{
tracet(3,"closeserial: dev=%d\n",serial->dev);
if (!serial) return;
#ifdef WIN32
serial->state=0;
WaitForSingleObject(serial->thread,10000);
CloseHandle(serial->dev);
CloseHandle(serial->thread);
#else
close(serial->dev);
#endif
free(serial);
}
/* read serial ---------------------------------------------------------------*/
static int readserial(serial_t *serial, unsigned char *buff, int n, char *msg)
{
#ifdef WIN32
DWORD nr;
#else
int nr;
#endif
tracet(4,"readserial: dev=%d n=%d\n",serial->dev,n);
if (!serial) return 0;
#ifdef WIN32
if (!ReadFile(serial->dev,buff,n,&nr,NULL)) return 0;
#else
if ((nr=read(serial->dev,buff,n))<0) return 0;
#endif
tracet(5,"readserial: exit dev=%d nr=%d\n",serial->dev,nr);
return nr;
}
/* write serial --------------------------------------------------------------*/
static int writeserial(serial_t *serial, unsigned char *buff, int n, char *msg)
{
int ns;
tracet(3,"writeserial: dev=%d n=%d\n",serial->dev,n);
if (!serial) return 0;
#ifdef WIN32
if ((ns=writeseribuff(serial,buff,n))<n) serial->error=1;
#else
if ((ns=write(serial->dev,buff,n))<0) return 0;
#endif
tracet(5,"writeserial: exit dev=%d ns=%d\n",serial->dev,ns);
return ns;
}
/* get state serial ----------------------------------------------------------*/
static int stateserial(serial_t *serial)
{
return !serial?0:(serial->error?-1:2);
}
/* open file -----------------------------------------------------------------*/
static int openfile_(file_t *file, gtime_t time, char *msg)
{
FILE *fp;
char *rw,tagpath[MAXSTRPATH+4]="";
char tagh[TIMETAGH_LEN+1]="";
tracet(3,"openfile_: path=%s time=%s\n",file->path,time_str(time,0));
file->time=utc2gpst(timeget());
file->tick=file->tick_f=tickget();
file->fpos=0;
/* use stdin or stdout if file path is null */
if (!*file->path) {
file->fp=file->mode&STR_MODE_R?stdin:stdout;
return 1;
}
/* replace keywords */
reppath(file->path,file->openpath,time,"","");
/* create directory */
if ((file->mode&STR_MODE_W)&&!(file->mode&STR_MODE_R)) {
createdir(file->openpath);
}
if (file->mode&STR_MODE_R) rw="rb"; else rw="wb";
if (!(file->fp=fopen(file->openpath,rw))) {
sprintf(msg,"file open error: %s",file->openpath);
tracet(1,"openfile: %s\n",msg);
return 0;
}
tracet(4,"openfile_: open file %s (%s)\n",file->openpath,rw);
sprintf(tagpath,"%s.tag",file->openpath);
if (file->timetag) { /* output/sync time-tag */
if (!(file->fp_tag=fopen(tagpath,rw))) {
sprintf(msg,"tag open error: %s",tagpath);
tracet(1,"openfile: %s\n",msg);
fclose(file->fp);
return 0;
}
tracet(4,"openfile_: open tag file %s (%s)\n",tagpath,rw);
if (file->mode&STR_MODE_R) {
if (fread(&tagh,TIMETAGH_LEN,1,file->fp_tag)==1&&
fread(&file->time,sizeof(file->time),1,file->fp_tag)==1) {
memcpy(&file->tick_f,tagh+TIMETAGH_LEN-4,sizeof(file->tick_f));
}
else {
file->tick_f=0;
}
/* adust time to read playback file */
timeset(file->time);
}
else {
sprintf(tagh,"TIMETAG RTKLIB %s",VER_RTKLIB);
memcpy(tagh+TIMETAGH_LEN-4,&file->tick_f,sizeof(file->tick_f));
fwrite(&tagh,1,TIMETAGH_LEN,file->fp_tag);
fwrite(&file->time,1,sizeof(file->time),file->fp_tag);
/* time tag file structure */
/* HEADER(60)+TICK(4)+TIME(12)+ */
/* TICK0(4)+FPOS0(4/8)+ */
/* TICK1(4)+FPOS1(4/8)+... */
}
}
else if (file->mode&STR_MODE_W) { /* remove time-tag */
if ((fp=fopen(tagpath,"rb"))) {
fclose(fp);
remove(tagpath);
}
}
return 1;
}
/* close file ----------------------------------------------------------------*/
static void closefile_(file_t *file)
{
tracet(3,"closefile_: path=%s\n",file->path);
if (file->fp) fclose(file->fp);
if (file->fp_tag) fclose(file->fp_tag);
if (file->fp_tmp) fclose(file->fp_tmp);
if (file->fp_tag_tmp) fclose(file->fp_tag_tmp);
file->fp=file->fp_tag=file->fp_tmp=file->fp_tag_tmp=NULL;
}
/* open file (path=filepath[::T[::+<off>][::x<speed>]][::S=swapintv]) --------*/
static file_t *openfile(const char *path, int mode, char *msg)
{
file_t *file;
gtime_t time,time0={0};
double speed=0.0,start=0.0,swapintv=0.0;
char *p;
int timetag=0;
tracet(3,"openfile: path=%s mode=%d\n",path,mode);
if (!(mode&(STR_MODE_R|STR_MODE_W))) return NULL;
/* file options */
for (p=(char *)path;(p=strstr(p,"::"));p+=2) { /* file options */
if (*(p+2)=='T') timetag=1;
else if (*(p+2)=='+') sscanf(p+2,"+%lf",&start);
else if (*(p+2)=='x') sscanf(p+2,"x%lf",&speed);
else if (*(p+2)=='S') sscanf(p+2,"S=%lf",&swapintv);
}
if (start<=0.0) start=0.0;
if (swapintv<=0.0) swapintv=0.0;
if (!(file=(file_t *)malloc(sizeof(file_t)))) return NULL;
file->fp=file->fp_tag=file->fp_tmp=file->fp_tag_tmp=NULL;
strcpy(file->path,path);
if ((p=strstr(file->path,"::"))) *p='\0';
file->openpath[0]='\0';
file->mode=mode;
file->timetag=timetag;
file->repmode=0;
file->offset=0;
file->time=file->wtime=time0;
file->tick=file->tick_f=file->fpos=0;
file->start=start;
file->speed=speed;
file->swapintv=swapintv;
initlock(&file->lock);
time=utc2gpst(timeget());
/* open new file */
if (!openfile_(file,time,msg)) {
free(file);
return NULL;
}
return file;
}
/* close file ----------------------------------------------------------------*/
static void closefile(file_t *file)
{
tracet(3,"closefile: fp=%d\n",file->fp);
if (!file) return;
closefile_(file);
free(file);
}
/* open new swap file --------------------------------------------------------*/
static void swapfile(file_t *file, gtime_t time, char *msg)
{
char openpath[MAXSTRPATH];
tracet(3,"swapfile: fp=%d time=%s\n",file->fp,time_str(time,0));
/* return if old swap file open */
if (file->fp_tmp||file->fp_tag_tmp) return;
/* check path of new swap file */
reppath(file->path,openpath,time,"","");
if (!strcmp(openpath,file->openpath)) {
tracet(2,"swapfile: no need to swap %s\n",openpath);
return;
}
/* save file pointer to temporary pointer */
file->fp_tmp=file->fp;
file->fp_tag_tmp=file->fp_tag;
/* open new swap file */
openfile_(file,time,msg);
}
/* close old swap file -------------------------------------------------------*/
static void swapclose(file_t *file)
{
tracet(3,"swapclose: fp_tmp=%d\n",file->fp_tmp);
if (file->fp_tmp ) fclose(file->fp_tmp );
if (file->fp_tag_tmp) fclose(file->fp_tag_tmp);
file->fp_tmp=file->fp_tag_tmp=NULL;
}
/* get state file ------------------------------------------------------------*/
static int statefile(file_t *file)
{
return file?2:0;
}
/* read file -----------------------------------------------------------------*/
static int readfile(file_t *file, unsigned char *buff, int nmax, char *msg)
{
struct timeval tv={0};
fd_set rs;
unsigned int nr=0,t,tick;
size_t fpos;
tracet(4,"readfile: fp=%d nmax=%d\n",file->fp,nmax);
if (!file) return 0;
if (file->fp==stdin) {
#ifndef WIN32
/* input from stdin */
FD_ZERO(&rs); FD_SET(0,&rs);
if (!select(1,&rs,NULL,NULL,&tv)) return 0;
if ((nr=read(0,buff,nmax))<0) return 0;
return nr;
#else
return 0;
#endif
}
if (file->fp_tag) {
if (file->repmode) { /* slave */
t=(unsigned int)(tick_master+file->offset);
}
else { /* master */
t=(unsigned int)((tickget()-file->tick)*file->speed+file->start*1000.0);
}
for (;;) { /* seek file position */
if (fread(&tick,sizeof(tick),1,file->fp_tag)<1||
fread(&fpos,sizeof(fpos),1,file->fp_tag)<1) {
fseek(file->fp,0,SEEK_END);
sprintf(msg,"end");
break;
}
if (file->repmode||file->speed>0.0) {
if ((int)(tick-t)<1) continue;
}
if (!file->repmode) tick_master=tick;
sprintf(msg,"T%+.1fs",(int)tick<0?0.0:(int)tick/1000.0);
if ((int)(fpos-file->fpos)>=nmax) {
fseek(file->fp,fpos,SEEK_SET);
file->fpos=fpos;
return 0;
}
nmax=(int)(fpos-file->fpos);
if (file->repmode||file->speed>0.0) {
fseek(file->fp_tag,-(long)(sizeof(tick)+sizeof(fpos)),SEEK_CUR);
}
break;
}
}
if (nmax>0) {
nr=fread(buff,1,nmax,file->fp);
file->fpos+=nr;
if (nr<=0) sprintf(msg,"end");
}
tracet(5,"readfile: fp=%d nr=%d fpos=%d\n",file->fp,nr,file->fpos);
return (int)nr;
}
/* write file ----------------------------------------------------------------*/
static int writefile(file_t *file, unsigned char *buff, int n, char *msg)
{
gtime_t wtime;
unsigned int ns,tick=tickget();
int week1,week2;
double tow1,tow2,intv;
size_t fpos,fpos_tmp;
tracet(3,"writefile: fp=%d n=%d\n",file->fp,n);
if (!file) return 0;
wtime=utc2gpst(timeget()); /* write time in gpst */
/* swap writing file */
if (file->swapintv>0.0&&file->wtime.time!=0) {
intv=file->swapintv*3600.0;
tow1=time2gpst(file->wtime,&week1);
tow2=time2gpst(wtime,&week2);
tow2+=604800.0*(week2-week1);
/* open new swap file */
if (floor((tow1+fswapmargin)/intv)<floor((tow2+fswapmargin)/intv)) {
swapfile(file,timeadd(wtime,fswapmargin),msg);
}
/* close old swap file */
if (floor((tow1-fswapmargin)/intv)<floor((tow2-fswapmargin)/intv)) {
swapclose(file);
}
}
if (!file->fp) return 0;
ns=fwrite(buff,1,n,file->fp);
fpos=ftell(file->fp);
fflush(file->fp);
file->wtime=wtime;
if (file->fp_tmp) {
fwrite(buff,1,n,file->fp_tmp);
fpos_tmp=ftell(file->fp_tmp);
fflush(file->fp_tmp);
}
if (file->fp_tag) {
tick-=file->tick;
fwrite(&tick,1,sizeof(tick),file->fp_tag);
fwrite(&fpos,1,sizeof(fpos),file->fp_tag);
fflush(file->fp_tag);
if (file->fp_tag_tmp) {
fwrite(&tick,1,sizeof(tick),file->fp_tag_tmp);
fwrite(&fpos_tmp,1,sizeof(fpos_tmp),file->fp_tag_tmp);
fflush(file->fp_tag_tmp);
}
}
tracet(5,"writefile: fp=%d ns=%d tick=%5d fpos=%d\n",file->fp,ns,tick,fpos);
return (int)ns;
}
/* sync files by time-tag ----------------------------------------------------*/
static void syncfile(file_t *file1, file_t *file2)
{
if (!file1->fp_tag||!file2->fp_tag) return;
file1->repmode=0;
file2->repmode=1;
file2->offset=(int)(file1->tick_f-file2->tick_f);
}
/* decode tcp/ntrip path (path=[user[:passwd]@]addr[:port][/mntpnt[:str]]) ---*/
static void decodetcppath(const char *path, char *addr, char *port, char *user,
char *passwd, char *mntpnt, char *str)
{
char buff[MAXSTRPATH],*p,*q;
tracet(4,"decodetcpepath: path=%s\n",path);
if (port) *port='\0';
if (user) *user='\0';
if (passwd) *passwd='\0';
if (mntpnt) *mntpnt='\0';
if (str) *str='\0';
strcpy(buff,path);
if (!(p=strrchr(buff,'@'))) p=buff;
if ((p=strchr(p,'/'))) {
if ((q=strchr(p+1,':'))) {
*q='\0'; if (str) strcpy(str,q+1);
}
*p='\0'; if (mntpnt) strcpy(mntpnt,p+1);
}
if ((p=strrchr(buff,'@'))) {
*p++='\0';
if ((q=strchr(buff,':'))) {
*q='\0'; if (passwd) strcpy(passwd,q+1);
}
if (user) strcpy(user,buff);
}
else p=buff;
if ((q=strchr(p,':'))) {
*q='\0'; if (port) strcpy(port,q+1);
}
if (addr) strcpy(addr,p);
}
/* get socket error ----------------------------------------------------------*/
#ifdef WIN32
static int errsock(void) {return WSAGetLastError();}
#else
static int errsock(void) {return errno;}
#endif
/* set socket option ---------------------------------------------------------*/
static int setsock(socket_t sock, char *msg)
{
int bs=buffsize,mode=1;
#ifdef WIN32
int tv=0;
#else
struct timeval tv={0};
#endif
tracet(3,"setsock: sock=%d\n",sock);
if (setsockopt(sock,SOL_SOCKET,SO_RCVTIMEO,(const char *)&tv,sizeof(tv))==-1||
setsockopt(sock,SOL_SOCKET,SO_SNDTIMEO,(const char *)&tv,sizeof(tv))==-1) {
sprintf(msg,"sockopt error: notimeo");
tracet(1,"setsock: setsockopt error 1 sock=%d err=%d\n",sock,errsock());
closesocket(sock);
return 0;
}
if (setsockopt(sock,SOL_SOCKET,SO_RCVBUF,(const char *)&bs,sizeof(bs))==-1||
setsockopt(sock,SOL_SOCKET,SO_SNDBUF,(const char *)&bs,sizeof(bs))==-1) {
tracet(1,"setsock: setsockopt error 2 sock=%d err=%d bs=%d\n",sock,errsock(),bs);
sprintf(msg,"sockopt error: bufsiz");
}
if (setsockopt(sock,IPPROTO_TCP,TCP_NODELAY,(const char *)&mode,sizeof(mode))==-1) {
tracet(1,"setsock: setsockopt error 3 sock=%d err=%d\n",sock,errsock());
sprintf(msg,"sockopt error: nodelay");
}
return 1;
}
/* non-block accept ----------------------------------------------------------*/
static socket_t accept_nb(socket_t sock, struct sockaddr *addr, socklen_t *len)
{
struct timeval tv={0};
fd_set rs;
FD_ZERO(&rs); FD_SET(sock,&rs);
if (!select(sock+1,&rs,NULL,NULL,&tv)) return 0;
return accept(sock,addr,len);
}
/* non-block connect ---------------------------------------------------------*/
static int connect_nb(socket_t sock, struct sockaddr *addr, socklen_t len)
{
#ifdef WIN32
u_long mode=1;
int err;
ioctlsocket(sock,FIONBIO,&mode);
if (connect(sock,addr,len)==-1) {
err=errsock();
if (err==WSAEWOULDBLOCK||err==WSAEINPROGRESS||
err==WSAEALREADY ||err==WSAEINVAL) return 0;
if (err!=WSAEISCONN) return -1;
}
#else
struct timeval tv={0};
fd_set rs,ws;
int err,flag;
flag=fcntl(sock,F_GETFL,0);
fcntl(sock,F_SETFL,flag|O_NONBLOCK);
if (connect(sock,addr,len)==-1) {
err=errsock();
if (err!=EISCONN&&err!=EINPROGRESS&&err!=EALREADY) return -1;
FD_ZERO(&rs); FD_SET(sock,&rs); ws=rs;
if (select(sock+1,&rs,&ws,NULL,&tv)==0) return 0;
}
#endif
return 1;
}
/* non-block receive ---------------------------------------------------------*/
static int recv_nb(socket_t sock, unsigned char *buff, int n)
{
struct timeval tv={0};
fd_set rs;
FD_ZERO(&rs); FD_SET(sock,&rs);
if (!select(sock+1,&rs,NULL,NULL,&tv)) return 0;
return recv(sock,(char *)buff,n,0);
}
/* non-block send ------------------------------------------------------------*/
static int send_nb(socket_t sock, unsigned char *buff, int n)
{
struct timeval tv={0};
fd_set ws;
FD_ZERO(&ws); FD_SET(sock,&ws);
if (!select(sock+1,NULL,&ws,NULL,&tv)) return 0;
return send(sock,(char *)buff,n,0);
}
/* generate tcp socket -------------------------------------------------------*/
static int gentcp(tcp_t *tcp, int type, char *msg)
{
struct hostent *hp;
#ifdef SVR_REUSEADDR
int opt=1;
#endif
tracet(3,"gentcp: type=%d\n",type);
/* generate socket */
if ((tcp->sock=socket(AF_INET,SOCK_STREAM,0))==(socket_t)-1) {
sprintf(msg,"socket error (%d)",errsock());
tracet(1,"gentcp: socket error err=%d\n",errsock());
tcp->state=-1;
return 0;
}
if (!setsock(tcp->sock,msg)) {
tcp->state=-1;
return 0;
}
memset(&tcp->addr,0,sizeof(tcp->addr));
tcp->addr.sin_family=AF_INET;
tcp->addr.sin_port=htons(tcp->port);
if (type==0) { /* server socket */
#ifdef SVR_REUSEADDR
/* multiple-use of server socket */
setsockopt(tcp->sock,SOL_SOCKET,SO_REUSEADDR,(const char *)&opt,
sizeof(opt));
#endif
if (bind(tcp->sock,(struct sockaddr *)&tcp->addr,sizeof(tcp->addr))==-1) {
sprintf(msg,"bind error (%d) : %d",errsock(),tcp->port);
tracet(1,"gentcp: bind error port=%d err=%d\n",tcp->port,errsock());
closesocket(tcp->sock);
tcp->state=-1;
return 0;
}
listen(tcp->sock,5);
}
else { /* client socket */
if (!(hp=gethostbyname(tcp->saddr))) {
sprintf(msg,"address error (%s)",tcp->saddr);
tracet(1,"gentcp: gethostbyname error addr=%s err=%d\n",tcp->saddr,errsock());
closesocket(tcp->sock);
tcp->state=0;
tcp->tcon=ticonnect;
tcp->tdis=tickget();
return 0;
}
memcpy(&tcp->addr.sin_addr,hp->h_addr,hp->h_length);
}
tcp->state=1;
tcp->tact=tickget();
tracet(5,"gentcp: exit sock=%d\n",tcp->sock);
return 1;
}
/* disconnect tcp ------------------------------------------------------------*/
static void discontcp(tcp_t *tcp, int tcon)
{
tracet(3,"discontcp: sock=%d tcon=%d\n",tcp->sock,tcon);
closesocket(tcp->sock);
tcp->state=0;
tcp->tcon=tcon;
tcp->tdis=tickget();
}
/* open tcp server -----------------------------------------------------------*/
static tcpsvr_t *opentcpsvr(const char *path, char *msg)
{
tcpsvr_t *tcpsvr,tcpsvr0={{0}};
char port[256]="";
tracet(3,"opentcpsvr: path=%s\n",path);
if (!(tcpsvr=(tcpsvr_t *)malloc(sizeof(tcpsvr_t)))) return NULL;
*tcpsvr=tcpsvr0;
decodetcppath(path,tcpsvr->svr.saddr,port,NULL,NULL,NULL,NULL);
if (sscanf(port,"%d",&tcpsvr->svr.port)<1) {
sprintf(msg,"port error: %s",port);
tracet(1,"opentcpsvr: port error port=%s\n",port);
free(tcpsvr);
return NULL;
}
if (!gentcp(&tcpsvr->svr,0,msg)) {
free(tcpsvr);
return NULL;
}
tcpsvr->svr.tcon=0;
return tcpsvr;
}
/* close tcp server ----------------------------------------------------------*/
static void closetcpsvr(tcpsvr_t *tcpsvr)
{
int i;
tracet(3,"closetcpsvr:\n");
for (i=0;i<MAXCLI;i++) {
if (tcpsvr->cli[i].state) closesocket(tcpsvr->cli[i].sock);
}
closesocket(tcpsvr->svr.sock);
free(tcpsvr);
}
/* update tcp server ---------------------------------------------------------*/
static void updatetcpsvr(tcpsvr_t *tcpsvr, char *msg)
{
char saddr[256]="";
int i,j,n=0;