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gnss-sdr/src/algorithms/libs/rtklib/rtklib_stream.cc

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2017-05-12 10:17:42 +00:00
/*!
* \file rtklib_stream.cc
* \brief streaming functions
* \authors <ul>
* <li> 2007-2013, T. Takasu
* <li> 2017, Javier Arribas
* <li> 2017, Carles Fernandez
* </ul>
*
* This is a derived work from RTKLIB http://www.rtklib.com/
* The original source code at https://github.com/tomojitakasu/RTKLIB is
* released under the BSD 2-clause license with an additional exclusive clause
* that does not apply here. This additional clause is reproduced below:
*
* " The software package includes some companion executive binaries or shared
* libraries necessary to execute APs on Windows. These licenses succeed to the
* original ones of these software. "
*
* Neither the executive binaries nor the shared libraries are required by, used
* or included in GNSS-SDR.
*
* -------------------------------------------------------------------------
* Copyright (C) 2007-2013, T. Takasu
* Copyright (C) 2017, Javier Arribas
* Copyright (C) 2017, Carles Fernandez
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* HOLDER OR CONTRIBUTORS 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.
*
*----------------------------------------------------------------------------*/
#include <rtklib_stream.h>
#include <rtklib_rtkcmn.h>
#include <rtklib_solution.h>
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#include <ctype.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <errno.h>
#include <termios.h>
#include <sys/socket.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
/* 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) */
/* open serial ---------------------------------------------------------------*/
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] = "";
const speed_t bs[] = {
B300, B600, B1200, B2400, B4800, B9600, B19200, B38400, B57600, B115200, B230400
};
struct termios ios = {0};
int rw = 0;
tracet(3, "openserial: path=%s mode=%d\n", path, mode);
if (!(serial = (serial_t *)malloc(sizeof(serial_t)))) return NULL;
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if ((p = strchr((char*)path, ':')))
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{
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);
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;
}
/* close serial --------------------------------------------------------------*/
void closeserial(serial_t *serial)
{
tracet(3, "closeserial: dev=%d\n", serial->dev);
if (!serial) return;
close(serial->dev);
free(serial);
}
/* read serial ---------------------------------------------------------------*/
int readserial(serial_t *serial, unsigned char *buff, int n, char *msg)
{
int nr;
tracet(4, "readserial: dev=%d n=%d\n", serial->dev, n);
if (!serial) return 0;
if ((nr = read(serial->dev, buff, n)) < 0) return 0;
tracet(5, "readserial: exit dev=%d nr=%d\n", serial->dev, nr);
return nr;
}
/* write serial --------------------------------------------------------------*/
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;
if ((ns = write(serial->dev, buff, n)) < 0) return 0;
tracet(5, "writeserial: exit dev=%d ns=%d\n", serial->dev, ns);
return ns;
}
/* get state serial ----------------------------------------------------------*/
int stateserial(serial_t *serial)
{
return !serial ? 0:(serial->error ? -1:2);
}
/* open file -----------------------------------------------------------------*/
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 = (char*)"rb"; else rw = (char*)"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 ----------------------------------------------------------------*/
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]) --------*/
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 ----------------------------------------------------------------*/
void closefile(file_t *file)
{
tracet(3, "closefile: fp=%d\n", file->fp);
if (!file) return;
closefile_(file);
free(file);
}
/* open new swap file --------------------------------------------------------*/
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 -------------------------------------------------------*/
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 ------------------------------------------------------------*/
int statefile(file_t *file)
{
return file ? 2 : 0;
}
/* read file -----------------------------------------------------------------*/
int readfile(file_t *file, unsigned char *buff, int nmax, char *msg)
{
struct timeval tv = {0};
fd_set rs;
unsigned int t, tick;
int nr = 0;
size_t fpos;
tracet(4, "readfile: fp=%d nmax=%d\n", file->fp, nmax);
if (!file) return 0;
if (file->fp == stdin)
{
/* 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;
}
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 ----------------------------------------------------------------*/
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 ----------------------------------------------------*/
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]]) ---*/
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 ----------------------------------------------------------*/
int errsock(void) {return errno;}
/* set socket option ---------------------------------------------------------*/
int setsock(socket_t sock, char *msg)
{
int bs = buffsize, mode = 1;
struct timeval tv = {0};
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 ----------------------------------------------------------*/
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 ---------------------------------------------------------*/
int connect_nb(socket_t sock, struct sockaddr *addr, socklen_t len)
{
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;
}
return 1;
}
/* non-block receive ---------------------------------------------------------*/
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 ------------------------------------------------------------*/
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 -------------------------------------------------------*/
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,
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sizeof(opt));
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#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 ------------------------------------------------------------*/
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 -----------------------------------------------------------*/
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 ----------------------------------------------------------*/
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 ---------------------------------------------------------*/
void updatetcpsvr(tcpsvr_t *tcpsvr, char *msg)
{
char saddr[256] = "";
int i, j, n = 0;
tracet(3, "updatetcpsvr: state=%d\n", tcpsvr->svr.state);
if (tcpsvr->svr.state == 0) return;
for (i = 0;i < MAXCLI;i++)
{
if (tcpsvr->cli[i].state) continue;
for (j = i+1;j < MAXCLI;j++)
{
if (!tcpsvr->cli[j].state) continue;
tcpsvr->cli[i] = tcpsvr->cli[j];
tcpsvr->cli[j].state = 0;
break;
}
}
for (i = 0;i < MAXCLI;i++)
{
if (!tcpsvr->cli[i].state) continue;
strcpy(saddr, tcpsvr->cli[i].saddr);
n++;
}
if (n == 0)
{
tcpsvr->svr.state = 1;
sprintf(msg, "waiting...");
return;
}
tcpsvr->svr.state = 2;
if (n == 1) sprintf(msg, "%s", saddr); else sprintf(msg, "%d clients", n);
}
/* accept client connection --------------------------------------------------*/
int accsock(tcpsvr_t *tcpsvr, char *msg)
{
struct sockaddr_in addr;
socket_t sock;
socklen_t len = sizeof(addr);
int i, err;
tracet(3, "accsock: sock=%d\n", tcpsvr->svr.sock);
for (i = 0;i < MAXCLI;i++) if (tcpsvr->cli[i].state == 0) break;
if (i >= MAXCLI) return 0; /* too many client */
if ((sock = accept_nb(tcpsvr->svr.sock, (struct sockaddr *)&addr, &len)) == (socket_t)-1)
{
err = errsock();
sprintf(msg, "accept error (%d)", err);
tracet(1, "accsock: accept error sock=%d err=%d\n", tcpsvr->svr.sock, err);
closesocket(tcpsvr->svr.sock); tcpsvr->svr.state = 0;
return 0;
}
if (sock == 0) return 0;
tcpsvr->cli[i].sock = sock;
if (!setsock(tcpsvr->cli[i].sock, msg)) return 0;
memcpy(&tcpsvr->cli[i].addr, &addr, sizeof(addr));
strcpy(tcpsvr->cli[i].saddr, inet_ntoa(addr.sin_addr));
sprintf(msg, "%s", tcpsvr->cli[i].saddr);
tracet(2, "accsock: connected sock=%d addr=%s\n", tcpsvr->cli[i].sock, tcpsvr->cli[i].saddr);
tcpsvr->cli[i].state = 2;
tcpsvr->cli[i].tact = tickget();
return 1;
}
/* wait socket accept --------------------------------------------------------*/
int waittcpsvr(tcpsvr_t *tcpsvr, char *msg)
{
tracet(4, "waittcpsvr: sock=%d state=%d\n", tcpsvr->svr.sock, tcpsvr->svr.state);
if (tcpsvr->svr.state <= 0) return 0;
while (accsock(tcpsvr, msg)) ;
updatetcpsvr(tcpsvr, msg);
return tcpsvr->svr.state == 2;
}
/* read tcp server -----------------------------------------------------------*/
int readtcpsvr(tcpsvr_t *tcpsvr, unsigned char *buff, int n, char *msg)
{
int nr, err;
tracet(4, "readtcpsvr: state=%d n=%d\n", tcpsvr->svr.state, n);
if (!waittcpsvr(tcpsvr, msg) || tcpsvr->cli[0].state != 2) return 0;
if ((nr = recv_nb(tcpsvr->cli[0].sock, buff, n)) == -1)
{
err = errsock();
tracet(1, "readtcpsvr: recv error sock=%d err=%d\n", tcpsvr->cli[0].sock, err);
sprintf(msg, "recv error (%d)", err);
discontcp(&tcpsvr->cli[0], ticonnect);
updatetcpsvr(tcpsvr, msg);
return 0;
}
if (nr>0) tcpsvr->cli[0].tact = tickget();
tracet(5, "readtcpsvr: exit sock=%d nr=%d\n", tcpsvr->cli[0].sock, nr);
return nr;
}
/* write tcp server ----------------------------------------------------------*/
int writetcpsvr(tcpsvr_t *tcpsvr, unsigned char *buff, int n, char *msg)
{
int i, ns = 0, err;
tracet(3, "writetcpsvr: state=%d n=%d\n", tcpsvr->svr.state, n);
if (!waittcpsvr(tcpsvr, msg)) return 0;
for (i = 0;i < MAXCLI;i++)
{
if (tcpsvr->cli[i].state != 2) continue;
if ((ns = send_nb(tcpsvr->cli[i].sock, buff, n)) == -1)
{
err = errsock();
tracet(1, "writetcpsvr: send error i=%d sock=%d err=%d\n", i, tcpsvr->cli[i].sock, err);
sprintf(msg, "send error (%d)", err);
discontcp(&tcpsvr->cli[i], ticonnect);
updatetcpsvr(tcpsvr, msg);
return 0;
}
if (ns>0) tcpsvr->cli[i].tact = tickget();
tracet(5, "writetcpsvr: send i=%d ns=%d\n", i, ns);
}
return ns;
}
/* get state tcp server ------------------------------------------------------*/
int statetcpsvr(tcpsvr_t *tcpsvr)
{
return tcpsvr ? tcpsvr->svr.state : 0;
}
/* connect server ------------------------------------------------------------*/
int consock(tcpcli_t *tcpcli, char *msg)
{
int stat, err;
tracet(3, "consock: sock=%d\n", tcpcli->svr.sock);
/* wait re-connect */
2017-05-12 17:40:51 +00:00
if (tcpcli->svr.tcon < 0 || (tcpcli->svr.tcon > 0 &&
2017-05-12 17:22:57 +00:00
(int)(tickget()-tcpcli->svr.tdis) < tcpcli->svr.tcon))
{
return 0;
}
/* non-block connect */
if ((stat = connect_nb(tcpcli->svr.sock, (struct sockaddr *)&tcpcli->svr.addr,
sizeof(tcpcli->svr.addr))) == -1)
{
err = errsock();
sprintf(msg, "connect error (%d)", err);
tracet(1, "consock: connect error sock=%d err=%d\n", tcpcli->svr.sock, err);
closesocket(tcpcli->svr.sock);
tcpcli->svr.state = 0;
return 0;
}
if (!stat)
{ /* not connect */
sprintf(msg, "connecting...");
return 0;
}
sprintf(msg, "%s", tcpcli->svr.saddr);
tracet(2, "consock: connected sock=%d addr=%s\n", tcpcli->svr.sock, tcpcli->svr.saddr);
tcpcli->svr.state = 2;
tcpcli->svr.tact = tickget();
return 1;
}
/* open tcp client -----------------------------------------------------------*/
tcpcli_t *opentcpcli(const char *path, char *msg)
{
tcpcli_t *tcpcli, tcpcli0 = {{0}};
char port[256] = "";
tracet(3, "opentcpcli: path=%s\n", path);
if (!(tcpcli = (tcpcli_t *)malloc(sizeof(tcpcli_t)))) return NULL;
*tcpcli = tcpcli0;
decodetcppath(path, tcpcli->svr.saddr, port, NULL, NULL, NULL, NULL);
if (sscanf(port, "%d", &tcpcli->svr.port) < 1)
{
sprintf(msg, "port error: %s", port);
tracet(1, "opentcp: port error port=%s\n", port);
free(tcpcli);
return NULL;
}
tcpcli->svr.tcon = 0;
tcpcli->toinact = toinact;
tcpcli->tirecon = ticonnect;
return tcpcli;
}
/* close tcp client ----------------------------------------------------------*/
void closetcpcli(tcpcli_t *tcpcli)
{
tracet(3, "closetcpcli: sock=%d\n", tcpcli->svr.sock);
closesocket(tcpcli->svr.sock);
free(tcpcli);
}
/* wait socket connect -------------------------------------------------------*/
int waittcpcli(tcpcli_t *tcpcli, char *msg)
{
tracet(4, "waittcpcli: sock=%d state=%d\n", tcpcli->svr.sock, tcpcli->svr.state);
if (tcpcli->svr.state < 0) return 0;
if (tcpcli->svr.state == 0)
{ /* close */
if (!gentcp(&tcpcli->svr, 1, msg)) return 0;
}
if (tcpcli->svr.state == 1)
{ /* wait */
if (!consock(tcpcli, msg)) return 0;
}
if (tcpcli->svr.state == 2)
{ /* connect */
if (tcpcli->toinact>0 &&
(int)(tickget()-tcpcli->svr.tact)>tcpcli->toinact)
{
sprintf(msg, "timeout");
tracet(2, "waittcpcli: inactive timeout sock=%d\n", tcpcli->svr.sock);
discontcp(&tcpcli->svr, tcpcli->tirecon);
return 0;
}
}
return 1;
}
/* read tcp client -----------------------------------------------------------*/
int readtcpcli(tcpcli_t *tcpcli, unsigned char *buff, int n, char *msg)
{
int nr, err;
tracet(4, "readtcpcli: sock=%d state=%d n=%d\n", tcpcli->svr.sock, tcpcli->svr.state, n);
if (!waittcpcli(tcpcli, msg)) return 0;
if ((nr = recv_nb(tcpcli->svr.sock, buff, n)) == -1)
{
err = errsock();
tracet(1, "readtcpcli: recv error sock=%d err=%d\n", tcpcli->svr.sock, err);
sprintf(msg, "recv error (%d)", err);
discontcp(&tcpcli->svr, tcpcli->tirecon);
return 0;
}
if (nr>0) tcpcli->svr.tact = tickget();
tracet(5, "readtcpcli: exit sock=%d nr=%d\n", tcpcli->svr.sock, nr);
return nr;
}
/* write tcp client ----------------------------------------------------------*/
int writetcpcli(tcpcli_t *tcpcli, unsigned char *buff, int n, char *msg)
{
int ns, err;
tracet(3, "writetcpcli: sock=%d state=%d n=%d\n", tcpcli->svr.sock, tcpcli->svr.state, n);
if (!waittcpcli(tcpcli, msg)) return 0;
if ((ns = send_nb(tcpcli->svr.sock, buff, n)) == -1)
{
err = errsock();
tracet(1, "writetcp: send error sock=%d err=%d\n", tcpcli->svr.sock, err);
sprintf(msg, "send error (%d)", err);
discontcp(&tcpcli->svr, tcpcli->tirecon);
return 0;
}
if (ns>0) tcpcli->svr.tact = tickget();
tracet(5, "writetcpcli: exit sock=%d ns=%d\n", tcpcli->svr.sock, ns);
return ns;
}
/* get state tcp client ------------------------------------------------------*/
int statetcpcli(tcpcli_t *tcpcli)
{
return tcpcli ? tcpcli->svr.state : 0;
}
/* base64 encoder ------------------------------------------------------------*/
int encbase64(char *str, const unsigned char *byte, int n)
{
const char table[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
int i, j, k, b;
tracet(4, "encbase64: n=%d\n", n);
for (i = j = 0;i/8 < n;)
{
for (k = b = 0;k < 6;k++, i++)
{
b<<=1; if (i/8 < n) b |= (byte[i/8] >> (7-i%8)) & 0x1;
}
str[j++] = table[b];
}
while (j&0x3) str[j++] = '=';
str[j] = '\0';
tracet(5, "encbase64: str=%s\n", str);
return j;
}
/* send ntrip server request -------------------------------------------------*/
int reqntrip_s(ntrip_t *ntrip, char *msg)
{
char buff[256+NTRIP_MAXSTR], *p = buff;
tracet(3, "reqntrip_s: state=%d\n", ntrip->state);
p += sprintf(p, "SOURCE %s %s\r\n", ntrip->passwd, ntrip->mntpnt);
p += sprintf(p, "Source-Agent: NTRIP %s\r\n", NTRIP_AGENT);
p += sprintf(p, "STR: %s\r\n", ntrip->str);
p += sprintf(p, "\r\n");
if (writetcpcli(ntrip->tcp, (unsigned char *)buff, p-buff, msg) != p-buff) return 0;
tracet(2, "reqntrip_s: send request state=%d ns=%d\n", ntrip->state, p-buff);
tracet(5, "reqntrip_s: n=%d buff=\n%s\n", p-buff, buff);
ntrip->state = 1;
return 1;
}
/* send ntrip client request -------------------------------------------------*/
int reqntrip_c(ntrip_t *ntrip, char *msg)
{
char buff[1024], user[512], *p = buff;
tracet(3, "reqntrip_c: state=%d\n", ntrip->state);
p += sprintf(p, "GET %s/%s HTTP/1.0\r\n", ntrip->url, ntrip->mntpnt);
p += sprintf(p, "User-Agent: NTRIP %s\r\n", NTRIP_AGENT);
if (!*ntrip->user)
{
p += sprintf(p, "Accept: */*\r\n");
p += sprintf(p, "Connection: close\r\n");
}
else
{
sprintf(user, "%s:%s", ntrip->user, ntrip->passwd);
p += sprintf(p, "Authorization: Basic ");
p += encbase64(p, (unsigned char *)user, strlen(user));
p += sprintf(p, "\r\n");
}
p += sprintf(p, "\r\n");
if (writetcpcli(ntrip->tcp, (unsigned char *)buff, p-buff, msg) != p-buff) return 0;
tracet(2, "reqntrip_c: send request state=%d ns=%d\n", ntrip->state, p-buff);
tracet(5, "reqntrip_c: n=%d buff=\n%s\n", p-buff, buff);
ntrip->state = 1;
return 1;
}
/* test ntrip server response ------------------------------------------------*/
int rspntrip_s(ntrip_t *ntrip, char *msg)
{
int i, nb;
char *p, *q;
tracet(3, "rspntrip_s: state=%d nb=%d\n", ntrip->state, ntrip->nb);
ntrip->buff[ntrip->nb] = '0';
tracet(5, "rspntrip_s: n=%d buff=\n%s\n", ntrip->nb, ntrip->buff);
if ((p = strstr((char *)ntrip->buff, NTRIP_RSP_OK_SVR)))
{ /* ok */
q = (char *)ntrip->buff;
p += strlen(NTRIP_RSP_OK_SVR);
ntrip->nb -= p-q;
for (i = 0;i < ntrip->nb;i++) *q++ = *p++;
ntrip->state = 2;
sprintf(msg, "%s/%s", ntrip->tcp->svr.saddr, ntrip->mntpnt);
tracet(2, "rspntrip_s: response ok nb=%d\n", ntrip->nb);
return 1;
}
else if ((p = strstr((char *)ntrip->buff, NTRIP_RSP_ERROR)))
{ /* error */
nb = ntrip->nb < MAXSTATMSG ? ntrip->nb : MAXSTATMSG;
strncpy(msg, (char *)ntrip->buff, nb); msg[nb] = 0;
tracet(1, "rspntrip_s: %s nb=%d\n", msg, ntrip->nb);
ntrip->nb = 0;
ntrip->buff[0] = '\0';
ntrip->state = 0;
discontcp(&ntrip->tcp->svr, ntrip->tcp->tirecon);
}
else if (ntrip->nb >= NTRIP_MAXRSP)
{ /* buffer overflow */
sprintf(msg, "response overflow");
tracet(1, "rspntrip_s: response overflow nb=%d\n", ntrip->nb);
ntrip->nb = 0;
ntrip->buff[0] = '\0';
ntrip->state = 0;
discontcp(&ntrip->tcp->svr, ntrip->tcp->tirecon);
}
tracet(5, "rspntrip_s: exit state=%d nb=%d\n", ntrip->state, ntrip->nb);
return 0;
}
/* test ntrip client response ------------------------------------------------*/
int rspntrip_c(ntrip_t *ntrip, char *msg)
{
int i;
char *p, *q;
tracet(3, "rspntrip_c: state=%d nb=%d\n", ntrip->state, ntrip->nb);
ntrip->buff[ntrip->nb] = '0';
tracet(5, "rspntrip_c: n=%d buff=\n%s\n", ntrip->nb, ntrip->buff);
if ((p = strstr((char *)ntrip->buff, NTRIP_RSP_OK_CLI)))
{ /* ok */
q = (char *)ntrip->buff;
p += strlen(NTRIP_RSP_OK_CLI);
ntrip->nb -= p-q;
for (i = 0;i < ntrip->nb;i++) *q++ = *p++;
ntrip->state = 2;
sprintf(msg, "%s/%s", ntrip->tcp->svr.saddr, ntrip->mntpnt);
tracet(2, "rspntrip_c: response ok nb=%d\n", ntrip->nb);
return 1;
}
if ((p = strstr((char *)ntrip->buff, NTRIP_RSP_SRCTBL)))
{ /* source table */
if (!*ntrip->mntpnt)
{ /* source table request */
ntrip->state = 2;
sprintf(msg, "source table received");
tracet(2, "rspntrip_c: receive source table nb=%d\n", ntrip->nb);
return 1;
}
sprintf(msg, "no mountp. reconnect...");
tracet(2, "rspntrip_c: no mount point nb=%d\n", ntrip->nb);
ntrip->nb = 0;
ntrip->buff[0] = '\0';
ntrip->state = 0;
discontcp(&ntrip->tcp->svr, ntrip->tcp->tirecon);
}
else if ((p = strstr((char *)ntrip->buff, NTRIP_RSP_HTTP)))
{ /* http response */
if ((q = strchr(p, '\r'))) *q = '\0'; else ntrip->buff[128] = '\0';
strcpy(msg, p);
tracet(1, "rspntrip_s: %s nb=%d\n", msg, ntrip->nb);
ntrip->nb = 0;
ntrip->buff[0] = '\0';
ntrip->state = 0;
discontcp(&ntrip->tcp->svr, ntrip->tcp->tirecon);
}
else if (ntrip->nb >= NTRIP_MAXRSP)
{ /* buffer overflow */
sprintf(msg, "response overflow");
tracet(1, "rspntrip_s: response overflow nb=%d\n", ntrip->nb);
ntrip->nb = 0;
ntrip->buff[0] = '\0';
ntrip->state = 0;
discontcp(&ntrip->tcp->svr, ntrip->tcp->tirecon);
}
tracet(5, "rspntrip_c: exit state=%d nb=%d\n", ntrip->state, ntrip->nb);
return 0;
}
/* wait ntrip request/response -----------------------------------------------*/
int waitntrip(ntrip_t *ntrip, char *msg)
{
int n;
char *p;
tracet(4, "waitntrip: state=%d nb=%d\n", ntrip->state, ntrip->nb);
if (ntrip->state < 0) return 0; /* error */
if (ntrip->tcp->svr.state < 2) ntrip->state = 0; /* tcp disconnected */
if (ntrip->state == 0)
{ /* send request */
if (!(ntrip->type == 0 ? reqntrip_s(ntrip, msg) : reqntrip_c(ntrip, msg)))
{
return 0;
}
tracet(2, "waitntrip: state=%d nb=%d\n", ntrip->state, ntrip->nb);
}
if (ntrip->state == 1) { /* read response */
p = (char *)ntrip->buff+ntrip->nb;
if ((n = readtcpcli(ntrip->tcp, (unsigned char *)p, NTRIP_MAXRSP-ntrip->nb-1, msg)) == 0)
{
tracet(5, "waitntrip: readtcp n=%d\n", n);
return 0;
}
ntrip->nb += n; ntrip->buff[ntrip->nb] = '\0';
/* wait response */
return ntrip->type == 0 ? rspntrip_s(ntrip, msg) : rspntrip_c(ntrip, msg);
}
return 1;
}
/* open ntrip ----------------------------------------------------------------*/
ntrip_t *openntrip(const char *path, int type, char *msg)
{
ntrip_t *ntrip;
int i;
char addr[256] = "", port[256] = "", tpath[MAXSTRPATH];
tracet(3, "openntrip: path=%s type=%d\n", path, type);
if (!(ntrip = (ntrip_t *)malloc(sizeof(ntrip_t)))) return NULL;
ntrip->state = 0;
ntrip->type = type; /* 0:server, 1:client */
ntrip->nb = 0;
ntrip->url[0] = '\0';
ntrip->mntpnt[0] = ntrip->user[0] = ntrip->passwd[0] = ntrip->str[0] = '\0';
for (i = 0;i < NTRIP_MAXRSP;i++) ntrip->buff[i] = 0;
/* decode tcp/ntrip path */
decodetcppath(path, addr, port, ntrip->user, ntrip->passwd, ntrip->mntpnt,
ntrip->str);
/* use default port if no port specified */
if (!*port)
{
sprintf(port, "%d", type ? NTRIP_CLI_PORT : NTRIP_SVR_PORT);
}
sprintf(tpath, "%s:%s", addr, port);
/* ntrip access via proxy server */
if (*proxyaddr)
{
sprintf(ntrip->url, "http://%s", tpath);
strcpy(tpath, proxyaddr);
}
/* open tcp client stream */
if (!(ntrip->tcp = opentcpcli(tpath, msg)))
{
tracet(1, "openntrip: opentcp error\n");
free(ntrip);
return NULL;
}
return ntrip;
}
/* close ntrip ---------------------------------------------------------------*/
void closentrip(ntrip_t *ntrip)
{
tracet(3, "closentrip: state=%d\n", ntrip->state);
closetcpcli(ntrip->tcp);
free(ntrip);
}
/* read ntrip ----------------------------------------------------------------*/
int readntrip(ntrip_t *ntrip, unsigned char *buff, int n, char *msg)
{
int nb;
tracet(4, "readntrip: n=%d\n", n);
if (!waitntrip(ntrip, msg)) return 0;
if (ntrip->nb>0)
{ /* read response buffer first */
nb = ntrip->nb <= n ? ntrip->nb : n;
memcpy(buff, ntrip->buff+ntrip->nb-nb, nb);
ntrip->nb = 0;
return nb;
}
return readtcpcli(ntrip->tcp, buff, n, msg);
}
/* write ntrip ---------------------------------------------------------------*/
int writentrip(ntrip_t *ntrip, unsigned char *buff, int n, char *msg)
{
tracet(3, "writentrip: n=%d\n", n);
if (!waitntrip(ntrip, msg)) return 0;
return writetcpcli(ntrip->tcp, buff, n, msg);
}
/* get state ntrip -----------------------------------------------------------*/
int statentrip(ntrip_t *ntrip)
{
return !ntrip ? 0 : (ntrip->state == 0 ? ntrip->tcp->svr.state : ntrip->state);
}
/* decode ftp path ----------------------------------------------------------*/
void decodeftppath(const char *path, char *addr, char *file, char *user,
char *passwd, int *topts)
{
char buff[MAXSTRPATH], *p, *q;
tracet(4, "decodeftpath: path=%s\n", path);
if (user) *user = '\0';
if (passwd) *passwd = '\0';
if (topts)
{
topts[0] = 0; /* time offset in path (s) */
topts[1] = 3600; /* download interval (s) */
topts[2] = 0; /* download time offset (s) */
topts[3] = 0; /* retry interval (s) (0: no retry) */
}
strcpy(buff, path);
if ((p = strchr(buff, '/')))
{
if ((q = strstr(p+1, "::")))
{
*q = '\0';
if (topts) sscanf(q+2, "T=%d, %d, %d, %d", topts, topts+1, topts+2, topts+3);
}
strcpy(file, p+1);
*p = '\0';
}
else file[0] = '\0';
if ((p = strrchr(buff, '@')))
{
*p++ = '\0';
if ((q = strchr(buff, ':')))
{
*q = '\0'; if (passwd) strcpy(passwd, q+1);
}
*q = '\0'; if (user) strcpy(user, buff);
}
else p = buff;
strcpy(addr, p);
}
/* next download time --------------------------------------------------------*/
gtime_t nextdltime(const int *topts, int stat)
{
gtime_t time;
double tow;
int week, tint;
tracet(3, "nextdltime: topts=%d %d %d %d stat=%d\n", topts[0], topts[1],
topts[2], topts[3], stat);
/* current time (gpst) */
time = utc2gpst(timeget());
tow = time2gpst(time, &week);
/* next retry time */
if (stat == 0 && topts[3]>0)
{
tow = (floor((tow-topts[2])/topts[3])+1.0)*topts[3]+topts[2];
return gpst2time(week, tow);
}
/* next interval time */
tint = topts[1] <= 0 ? 3600:topts[1];
tow = (floor((tow-topts[2])/tint)+1.0)*tint+topts[2];
time = gpst2time(week, tow);
return time;
}
/* ftp thread ----------------------------------------------------------------*/
void *ftpthread(void *arg)
{
ftp_t *ftp = (ftp_t *)arg;
FILE *fp;
gtime_t time;
char remote[1024], local[1024], tmpfile[1024], errfile[1024], *p;
char cmd[2048], env[1024] = "", opt[1024], *proxyopt = (char*)"", *proto;
int ret;
tracet(3, "ftpthread:\n");
if (!*localdir)
{
tracet(1, "no local directory\n");
ftp->error = 11;
ftp->state = 3;
return 0;
}
/* replace keyword in file path and local path */
time = timeadd(utc2gpst(timeget()), ftp->topts[0]);
reppath(ftp->file, remote, time, "", "");
if ((p = strrchr(remote, '/'))) p++; else p = remote;
sprintf(local, "%s%c%s", localdir, FILEPATHSEP, p);
sprintf(errfile, "%s.err", local);
/* if local file exist, skip download */
strcpy(tmpfile, local);
if ((p = strrchr(tmpfile, '.')) &&
(!strcmp(p, ".z") || !strcmp(p, ".gz") || !strcmp(p, ".zip") ||
!strcmp(p, ".Z") || !strcmp(p, ".GZ") || !strcmp(p, ".ZIP")))
{
*p = '\0';
}
if ((fp = fopen(tmpfile, "rb")))
{
fclose(fp);
strcpy(ftp->local, tmpfile);
tracet(3, "ftpthread: file exists %s\n", ftp->local);
ftp->state = 2;
return 0;
}
/* proxy settings for wget (ref [2]) */
if (*proxyaddr)
{
proto = ftp->proto ? (char*)"http" : (char*)"ftp";
sprintf(env, "set %s_proxy=http://%s & ", proto, proxyaddr);
proxyopt = (char*)"--proxy=on ";
}
/* download command (ref [2]) */
if (ftp->proto == 0)
{ /* ftp */
sprintf(opt, "--ftp-user=%s --ftp-password=%s --glob=off --passive-ftp %s-t 1 -T %d -O \"%s\"",
ftp->user, ftp->passwd, proxyopt, FTP_TIMEOUT, local);
sprintf(cmd, "%s%s %s \"ftp://%s/%s\" 2> \"%s\"\n", env, FTP_CMD, opt, ftp->addr,
remote, errfile);
}
else
{ /* http */
sprintf(opt, "%s-t 1 -T %d -O \"%s\"", proxyopt, FTP_TIMEOUT, local);
sprintf(cmd, "%s%s %s \"http://%s/%s\" 2> \"%s\"\n", env, FTP_CMD, opt, ftp->addr,
remote, errfile);
}
/* execute download command */
if ((ret = execcmd(cmd)))
{
remove(local);
tracet(1, "execcmd error: cmd=%s ret=%d\n", cmd, ret);
ftp->error = ret;
ftp->state = 3;
return 0;
}
remove(errfile);
/* uncompress downloaded file */
if ((p = strrchr(local, '.')) &&
(!strcmp(p, ".z") || !strcmp(p, ".gz") || !strcmp(p, ".zip") ||
!strcmp(p, ".Z") || !strcmp(p, ".GZ") || !strcmp(p, ".ZIP")))
{
if (rtk_uncompress(local, tmpfile))
{
remove(local);
strcpy(local, tmpfile);
}
else
{
tracet(1, "file uncompact error: %s\n", local);
ftp->error = 12;
ftp->state = 3;
return 0;
}
}
strcpy(ftp->local, local);
ftp->state = 2; /* ftp completed */
tracet(3, "ftpthread: complete cmd=%s\n", cmd);
return 0;
}
/* open ftp ------------------------------------------------------------------*/
ftp_t *openftp(const char *path, int type, char *msg)
{
ftp_t *ftp;
tracet(3, "openftp: path=%s type=%d\n", path, type);
msg[0] = '\0';
if (!(ftp = (ftp_t *)malloc(sizeof(ftp_t)))) return NULL;
ftp->state = 0;
ftp->proto = type;
ftp->error = 0;
ftp->thread = 0;
ftp->local[0] = '\0';
/* decode ftp path */
decodeftppath(path, ftp->addr, ftp->file, ftp->user, ftp->passwd, ftp->topts);
/* set first download time */
ftp->tnext = timeadd(timeget(), 10.0);
return ftp;
}
/* close ftp -----------------------------------------------------------------*/
void closeftp(ftp_t *ftp)
{
tracet(3, "closeftp: state=%d\n", ftp->state);
if (ftp->state != 1) free(ftp);
}
/* read ftp ------------------------------------------------------------------*/
int readftp(ftp_t *ftp, unsigned char *buff, int n, char *msg)
{
gtime_t time;
unsigned char *p, *q;
tracet(4, "readftp: n=%d\n", n);
time = utc2gpst(timeget());
if (timediff(time, ftp->tnext) < 0.0)
{ /* until download time? */
return 0;
}
if (ftp->state <= 0)
{ /* ftp/http not executed? */
ftp->state = 1;
sprintf(msg, "%s://%s", ftp->proto ? "http" : "ftp", ftp->addr);
if (pthread_create(&ftp->thread, NULL, ftpthread, ftp))
{
tracet(1, "readftp: ftp thread create error\n");
ftp->state = 3;
strcpy(msg, "ftp thread error");
return 0;
}
}
if (ftp->state <= 1) return 0; /* ftp/http on going? */
if (ftp->state == 3)
{ /* ftp error */
sprintf(msg, "%s error (%d)", ftp->proto ? "http" : "ftp", ftp->error);
/* set next retry time */
ftp->tnext = nextdltime(ftp->topts, 0);
ftp->state = 0;
return 0;
}
/* return local file path if ftp completed */
p = buff;
q = (unsigned char *)ftp->local;
while (*q && (int)(p-buff) < n) *p++ = *q++;
p += sprintf((char *)p, "\r\n");
/* set next download time */
ftp->tnext = nextdltime(ftp->topts, 1);
ftp->state = 0;
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strcpy(msg, "");
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return (int)(p-buff);
}
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/* get state ftp -------------------------------------------------------------*/
int stateftp(ftp_t *ftp)
{
return !ftp ? 0 : (ftp->state == 0 ? 2 : (ftp->state <= 2 ? 3 : -1));
}
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/* initialize stream environment -----------------------------------------------
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* initialize stream environment
* args : none
* return : none
*-----------------------------------------------------------------------------*/
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void strinitcom(void)
{
tracet(3, "strinitcom:\n");
}
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/* initialize stream -----------------------------------------------------------
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* initialize stream struct
* args : stream_t *stream IO stream
* return : none
*-----------------------------------------------------------------------------*/
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void strinit(stream_t *stream)
{
tracet(3, "strinit:\n");
stream->type = 0;
stream->mode = 0;
stream->state = 0;
stream->inb = stream->inr = stream->outb = stream->outr = 0;
stream->tick = stream->tact = stream->inbt = stream->outbt = 0;
initlock(&stream->lock);
stream->port = NULL;
stream->path[0] = '\0';
stream->msg [0] = '\0';
}
/* open stream -----------------------------------------------------------------
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* open stream for read or write
* args : stream_t *stream IO stream
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* int type I stream type (STR_SERIAL, STR_FILE, STR_TCPSVR, ...)
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* int mode I stream mode (STR_MODE_???)
* char *path I stream path (see below)
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* return : status (0:error, 1:ok)
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* notes : see reference [1] for NTRIP
* STR_FTP/HTTP needs "wget" in command search paths
*
* stream path ([] options):
*
* STR_SERIAL port[:brate[:bsize[:parity[:stopb[:fctr]]]]]
* port = COM?? (windows), tty??? (linuex, omit /dev/)
* brate = bit rate (bps)
* bsize = bit size (7|8)
* parity= parity (n|o|e)
* stopb = stop bits (1|2)
* fctr = flow control (off|rts)
* STR_FILE file_path[::T][::+start][::xseppd][::S=swap]
* ::T = enable time tag
* start = replay start offset (s)
* speed = replay speed factor
* swap = output swap interval (hr) (0: no swap)
* STR_TCPSVR :port
* STR_TCPCLI address:port
* STR_NTRIPSVR user[:passwd]@address[:port]/moutpoint[:string]
* STR_NTRIPCLI [user[:passwd]]@address[:port][/mountpoint]
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* STR_FTP [user[:passwd]]@address/file_path[::T=poff[, tint[, toff, tret]]]]
* STR_HTTP address/file_path[::T=poff[, tint[, toff, tret]]]]
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* poff = time offset for path extension (s)
* tint = download interval (s)
* toff = download time offset (s)
* tret = download retry interval (s) (0:no retry)
*-----------------------------------------------------------------------------*/
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int stropen(stream_t *stream, int type, int mode, const char *path)
{
tracet(3, "stropen: type=%d mode=%d path=%s\n", type, mode, path);
stream->type = type;
stream->mode = mode;
strcpy(stream->path, path);
stream->inb = stream->inr = stream->outb = stream->outr = 0;
stream->tick = tickget();
stream->inbt = stream->outbt = 0;
stream->msg[0] = '\0';
stream->port = NULL;
switch (type)
{
case STR_SERIAL : stream->port = openserial(path, mode, stream->msg); break;
case STR_FILE : stream->port = openfile (path, mode, stream->msg); break;
case STR_TCPSVR : stream->port = opentcpsvr(path, stream->msg); break;
case STR_TCPCLI : stream->port = opentcpcli(path, stream->msg); break;
case STR_NTRIPSVR: stream->port = openntrip (path, 0, stream->msg); break;
case STR_NTRIPCLI: stream->port = openntrip (path, 1, stream->msg); break;
case STR_FTP : stream->port = openftp (path, 0, stream->msg); break;
case STR_HTTP : stream->port = openftp (path, 1, stream->msg); break;
default: stream->state = 0; return 1;
}
stream->state = !stream->port ? -1 : 1;
return stream->port != NULL;
}
/* close stream ----------------------------------------------------------------
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* close stream
* args : stream_t *stream IO stream
* return : none
*-----------------------------------------------------------------------------*/
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void strclose(stream_t *stream)
{
tracet(3, "strclose: type=%d mode=%d\n", stream->type, stream->mode);
if (stream->port)
{
switch (stream->type)
{
case STR_SERIAL : closeserial((serial_t *)stream->port); break;
case STR_FILE : closefile ((file_t *)stream->port); break;
case STR_TCPSVR : closetcpsvr((tcpsvr_t *)stream->port); break;
case STR_TCPCLI : closetcpcli((tcpcli_t *)stream->port); break;
case STR_NTRIPSVR: closentrip ((ntrip_t *)stream->port); break;
case STR_NTRIPCLI: closentrip ((ntrip_t *)stream->port); break;
case STR_FTP : closeftp ((ftp_t *)stream->port); break;
case STR_HTTP : closeftp ((ftp_t *)stream->port); break;
}
}
else
{
trace(2, "no port to close stream: type=%d\n", stream->type);
}
stream->type = 0;
stream->mode = 0;
stream->state = 0;
stream->inr = stream->outr = 0;
stream->path[0] = '\0';
stream->msg[0] = '\0';
stream->port = NULL;
}
/* sync streams ----------------------------------------------------------------
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* sync time for streams
* args : stream_t *stream1 IO stream 1
* stream_t *stream2 IO stream 2
* return : none
* notes : for replay files with time tags
*-----------------------------------------------------------------------------*/
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void strsync(stream_t *stream1, stream_t *stream2)
{
file_t *file1, *file2;
if (stream1->type != STR_FILE || stream2->type != STR_FILE) return;
file1 = (file_t*)stream1->port;
file2 = (file_t*)stream2->port;
if (file1 && file2) syncfile(file1, file2);
}
/* lock/unlock stream ----------------------------------------------------------
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* lock/unlock stream
* args : stream_t *stream I stream
* return : none
*-----------------------------------------------------------------------------*/
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void strlock (stream_t *stream) {rtk_lock (&stream->lock);}
void strunlock(stream_t *stream) {rtk_unlock(&stream->lock);}
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/* read stream -----------------------------------------------------------------
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* read data from stream (unblocked)
* args : stream_t *stream I stream
* unsinged char *buff O data buffer
* int n I maximum data length
* return : read data length
* notes : if no data, return immediately with no data
*-----------------------------------------------------------------------------*/
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int strread(stream_t *stream, unsigned char *buff, int n)
{
unsigned int tick;
char *msg = stream->msg;
int nr;
tracet(4, "strread: n=%d\n", n);
if (!(stream->mode&STR_MODE_R) || !stream->port) return 0;
strlock(stream);
switch (stream->type)
{
case STR_SERIAL : nr = readserial((serial_t *)stream->port, buff, n, msg); break;
case STR_FILE : nr = readfile ((file_t *)stream->port, buff, n, msg); break;
case STR_TCPSVR : nr = readtcpsvr((tcpsvr_t *)stream->port, buff, n, msg); break;
case STR_TCPCLI : nr = readtcpcli((tcpcli_t *)stream->port, buff, n, msg); break;
case STR_NTRIPCLI: nr = readntrip ((ntrip_t *)stream->port, buff, n, msg); break;
case STR_FTP : nr = readftp ((ftp_t *)stream->port, buff, n, msg); break;
case STR_HTTP : nr = readftp ((ftp_t *)stream->port, buff, n, msg); break;
default:
strunlock(stream);
return 0;
}
stream->inb += nr;
tick = tickget(); if (nr>0) stream->tact = tick;
if ((int)(tick-stream->tick) >= tirate)
{
stream->inr = (stream->inb-stream->inbt)*8000/(tick-stream->tick);
stream->tick = tick; stream->inbt = stream->inb;
}
strunlock(stream);
return nr;
}
/* write stream ----------------------------------------------------------------
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* write data to stream (unblocked)
* args : stream_t *stream I stream
* unsinged char *buff I data buffer
* int n I data length
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* return : status (0:error, 1:ok)
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* notes : write data to buffer and return immediately
*-----------------------------------------------------------------------------*/
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int strwrite(stream_t *stream, unsigned char *buff, int n)
{
unsigned int tick;
char *msg = stream->msg;
int ns;
tracet(3, "strwrite: n=%d\n", n);
if (!(stream->mode&STR_MODE_W) || !stream->port) return 0;
strlock(stream);
switch (stream->type)
{
case STR_SERIAL : ns = writeserial((serial_t *)stream->port, buff, n, msg); break;
case STR_FILE : ns = writefile ((file_t *)stream->port, buff, n, msg); break;
case STR_TCPSVR : ns = writetcpsvr((tcpsvr_t *)stream->port, buff, n, msg); break;
case STR_TCPCLI : ns = writetcpcli((tcpcli_t *)stream->port, buff, n, msg); break;
case STR_NTRIPCLI:
case STR_NTRIPSVR: ns = writentrip ((ntrip_t *)stream->port, buff, n, msg); break;
case STR_FTP :
case STR_HTTP :
default:
strunlock(stream);
return 0;
}
stream->outb += ns;
tick = tickget(); if (ns>0) stream->tact = tick;
if ((int)(tick-stream->tick)>tirate)
{
stream->outr = (stream->outb-stream->outbt)*8000/(tick-stream->tick);
stream->tick = tick; stream->outbt = stream->outb;
}
strunlock(stream);
return ns;
}
/* get stream status -----------------------------------------------------------
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* get stream status
* args : stream_t *stream I stream
* char *msg IO status message (NULL: no output)
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* return : status (-1:error, 0:close, 1:wait, 2:connect, 3:active)
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*-----------------------------------------------------------------------------*/
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int strstat(stream_t *stream, char *msg)
{
int state;
tracet(4, "strstat:\n");
strlock(stream);
if (msg)
{
strncpy(msg, stream->msg, MAXSTRMSG-1); msg[MAXSTRMSG-1] = '\0';
}
if (!stream->port)
{
strunlock(stream);
return stream->state;
}
switch (stream->type)
{
case STR_SERIAL : state = stateserial((serial_t *)stream->port); break;
case STR_FILE : state = statefile ((file_t *)stream->port); break;
case STR_TCPSVR : state = statetcpsvr((tcpsvr_t *)stream->port); break;
case STR_TCPCLI : state = statetcpcli((tcpcli_t *)stream->port); break;
case STR_NTRIPSVR:
case STR_NTRIPCLI: state = statentrip ((ntrip_t *)stream->port); break;
case STR_FTP : state = stateftp ((ftp_t *)stream->port); break;
case STR_HTTP : state = stateftp ((ftp_t *)stream->port); break;
default:
strunlock(stream);
return 0;
}
if (state == 2 && (int)(tickget()-stream->tact) <= TINTACT) state = 3;
strunlock(stream);
return state;
}
/* get stream statistics summary -----------------------------------------------
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* get stream statistics summary
* args : stream_t *stream I stream
* int *inb IO bytes of input (NULL: no output)
* int *inr IO bps of input (NULL: no output)
* int *outb IO bytes of output (NULL: no output)
* int *outr IO bps of output (NULL: no output)
* return : none
*-----------------------------------------------------------------------------*/
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void strsum(stream_t *stream, int *inb, int *inr, int *outb, int *outr)
{
tracet(4, "strsum:\n");
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strlock(stream);
if (inb) *inb = stream->inb;
if (inr) *inr = stream->inr;
if (outb) *outb = stream->outb;
if (outr) *outr = stream->outr;
strunlock(stream);
}
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/* set global stream options ---------------------------------------------------
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* set global stream options
* args : int *opt I options
* opt[0]= inactive timeout (ms) (0: no timeout)
* opt[1]= interval to reconnect (ms)
* opt[2]= averaging time of data rate (ms)
* opt[3]= receive/send buffer size (bytes);
* opt[4]= file swap margin (s)
* opt[5]= reserved
* opt[6]= reserved
* opt[7]= reserved
* return : none
*-----------------------------------------------------------------------------*/
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void strsetopt(const int *opt)
{
tracet(3, "strsetopt: opt=%d %d %d %d %d %d %d %d\n", opt[0], opt[1], opt[2],
opt[3], opt[4], opt[5], opt[6], opt[7]);
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toinact = 0 < opt[0] && opt[0] < 1000 ? 1000 : opt[0]; /* >=1s */
ticonnect = opt[1] < 1000 ? 1000 : opt[1]; /* >=1s */
tirate = opt[2] < 100 ? 100 : opt[2]; /* >=0.1s */
buffsize = opt[3] < 4096 ? 4096 : opt[3]; /* >=4096byte */
fswapmargin = opt[4] < 0 ? 0 : opt[4];
}
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/* set timeout time ------------------------------------------------------------
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* set timeout time
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* args : stream_t *stream I stream (STR_TCPCLI, STR_NTRIPCLI, STR_NTRIPSVR)
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* int toinact I inactive timeout (ms) (0: no timeout)
* int tirecon I reconnect interval (ms) (0: no reconnect)
* return : none
*-----------------------------------------------------------------------------*/
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void strsettimeout(stream_t *stream, int toinact, int tirecon)
{
tcpcli_t *tcpcli;
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tracet(3, "strsettimeout: toinact=%d tirecon=%d\n", toinact, tirecon);
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if (stream->type == STR_TCPCLI)
{
tcpcli = (tcpcli_t *)stream->port;
}
else if (stream->type == STR_NTRIPCLI || stream->type == STR_NTRIPSVR)
{
tcpcli = ((ntrip_t *)stream->port)->tcp;
}
else return;
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tcpcli->toinact = toinact;
tcpcli->tirecon = tirecon;
}
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/* set local directory ---------------------------------------------------------
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* set local directory path for ftp/http download
* args : char *dir I directory for download files
* return : none
*-----------------------------------------------------------------------------*/
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void strsetdir(const char *dir)
{
tracet(3, "strsetdir: dir=%s\n", dir);
strcpy(localdir, dir);
}
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/* set http/ntrip proxy address ------------------------------------------------
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* set http/ntrip proxy address
* args : char *addr I http/ntrip proxy address <address>:<port>
* return : none
*-----------------------------------------------------------------------------*/
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void strsetproxy(const char *addr)
{
tracet(3, "strsetproxy: addr=%s\n", addr);
strcpy(proxyaddr, addr);
}
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/* get stream time -------------------------------------------------------------
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* get stream time
* args : stream_t *stream I stream
* return : current time or replay time for playback file
*-----------------------------------------------------------------------------*/
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gtime_t strgettime(stream_t *stream)
{
file_t *file;
if (stream->type == STR_FILE && (stream->mode&STR_MODE_R) &&
(file = (file_t *)stream->port))
{
return timeadd(file->time, file->start); /* replay start time */
}
return utc2gpst(timeget());
}
/* send nmea request -----------------------------------------------------------
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* send nmea gpgga message to stream
* args : stream_t *stream I stream
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* double *pos I position {x, y, z} (ecef) (m)
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* return : none
*-----------------------------------------------------------------------------*/
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void strsendnmea(stream_t *stream, const double *pos)
{
sol_t sol = {{0}};
unsigned char buff[1024];
int i, n;
tracet(3, "strsendnmea: pos=%.3f %.3f %.3f\n", pos[0], pos[1], pos[2]);
sol.stat = SOLQ_SINGLE;
sol.time = utc2gpst(timeget());
for (i = 0;i < 3;i++) sol.rr[i] = pos[i];
n = outnmea_gga(buff, &sol);
strwrite(stream, buff, n);
}
/* generate general hex message ----------------------------------------------*/
int gen_hex(const char *msg, unsigned char *buff)
{
unsigned char *q = buff;
char mbuff[1024] = "", *args[256], *p;
unsigned int byte;
int i, narg = 0;
trace(4, "gen_hex: msg=%s\n", msg);
strncpy(mbuff, msg, 1023);
for (p = strtok(mbuff, " ");p && narg < 256;p = strtok(NULL, " "))
{
args[narg++] = p;
}
for (i = 0;i < narg;i++)
{
if (sscanf(args[i], "%x", &byte)) *q++ = (unsigned char)byte;
}
return (int)(q-buff);
}
/* send receiver command -------------------------------------------------------
2017-05-12 10:17:42 +00:00
* send receiver commands to stream
* args : stream_t *stream I stream
* char *cmd I receiver command strings
* return : none
*-----------------------------------------------------------------------------*/
2017-05-12 17:22:57 +00:00
void strsendcmd(stream_t *str, const char *cmd)
{
unsigned char buff[1024];
const char *p = cmd, *q;
char msg[1024], cmdend[] = "\r\n";
int n, m, ms;
tracet(3, "strsendcmd: cmd=%s\n", cmd);
for (;;)
{
for (q = p;;q++) if (*q == '\r' || *q == '\n' || *q == '\0') break;
n = (int)(q-p); strncpy(msg, p, n); msg[n] = '\0';
if (!*msg || *msg == '#')
{ /* null or comment */
;
}
else if (*msg == '!')
{ /* binary escape */
if (!strncmp(msg+1, "WAIT", 4))
{ /* wait */
if (sscanf(msg+5, "%d", &ms) < 1) ms = 100;
if (ms>3000) ms = 3000; /* max 3 s */
sleepms(ms);
}
//else if (!strncmp(msg+1, "UBX", 3))
//{ /* ublox */
// if ((m=gen_ubx(msg+4, buff))>0) strwrite(str, buff, m);
//}
//else if (!strncmp(msg+1, "STQ", 3))
//{ /* skytraq */
// if ((m=gen_stq(msg+4, buff))>0) strwrite(str, buff, m);
//}
//else if (!strncmp(msg+1, "NVS", 3))
//{ /* nvs */
// if ((m=gen_nvs(msg+4, buff))>0) strwrite(str, buff, m);
//}
//else if (!strncmp(msg+1, "LEXR", 4))
//{ /* lex receiver */
// if ((m=gen_lexr(msg+5, buff))>0) strwrite(str, buff, m);
//}
else if (!strncmp(msg+1, "HEX", 3))
{ /* general hex message */
if ((m = gen_hex(msg+4, buff))>0) strwrite(str, buff, m);
}
}
else
{
strwrite(str, (unsigned char *)msg, n);
strwrite(str, (unsigned char *)cmdend, 2);
}
if (*q == '\0') break; else p = q+1;
}
}