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//************************************************************
// smodlib.cpp - source file for voice manipulation library for
// USR Sportster voice modem with speakerphone.
//************************************************************
#include "incall.h"
// Timer flag
ModemStatus MState;
GlobInit glb;
void GlobInit::PrepareAll()
{
struct sigaction act, oact;
openlog( "gspk", LOG_CONS, LOG_DAEMON);
// Enable signal handling for the child.
act.sa_handler = timeout;
sigemptyset( &act.sa_mask );
act.sa_flags = 0;
#ifdef SA_RESTART
act.sa_flags |= SA_RESTART;
#endif
if (sigaction( SIGALRM, &act, &oact) < 0)
{
syslog(LOG_CRIT,"Cannot catch SIGALRM");
return;
}
};
void GlobInit::CloseAll()
{
closelog();
}
int iTimedOut = 0;
void timeout(int)
{
iTimedOut = 1;
};
//***************************************************************
//***************************************************************
//
// class PortParam
//
//***************************************************************
//***************************************************************
PortParam::PortParam(char* PName)
{
IsSetup = 0;
PortName = NULL;
if (PName == NULL) return;
PortName = new char[strlen(PName) + 1];
strcpy(PortName, PName);
};
int PortParam::SetPortMode(int speed)
{
struct termios tdes;
int fd;
if (PortName == NULL)
{
syslog(LOG_CRIT,"Port name is not defined in PortParam::SetPortMode!");
return 0;
}
// Open port
fd = open( PortName, O_RDWR | O_NONBLOCK);
if (fd == -1)
{
syslog(LOG_CRIT,"Unable to open modem port:");
syslog(LOG_CRIT,PortName);
return 0;
}
if (!isatty(fd))
{
syslog(LOG_CRIT,"Specified device is not a terminal:");
syslog(LOG_CRIT,PortName);
close(fd);
return 0;
}
if (tcgetattr ( fd, &told ) < 0)
{
syslog(LOG_CRIT,"tcgetattr failure");
close(fd);
return 0;
}
if (tcgetattr ( fd, &tdes ) < 0)
{
syslog(LOG_CRIT,"tcgetattr failure");
close(fd);
return 0;
}
tdes.c_iflag = IGNBRK | IGNPAR;
// BRKINT | PARMRK | INPCK | ISTRIP | INLCR | IGNCR | ICRNL |
// IUCLC | IXON | IXANY | IXOFF | IMAXBEL
tdes.c_oflag = 0;
// OPOST | OLCUC | ONLCR | OCRNL | ONOCR | ONLRET | OFILL |
// OFDEL | NLDLY | NL0 | NL1 | CRDLY | CR0 | CR1 | CR2 | CR3 |
// TABDLY | TAB0 | TAB1 | TAB2 | TAB3 | XTABS | BSDLY | BS0 |
// BS1 | VTDLY | VT0 | VT1 | FFDLY | FF0 | FF1
tdes.c_cflag = CS8 | HUPCL | CLOCAL | CRTSCTS | CREAD;
// CBAUD | EXTA | EXTB | CSIZE | CS5 | CS6 | CS7 | CSTOPB |
// CREAD | PARENB | PARODD | CIBAUD |
switch (speed)
{
case 0: tdes.c_cflag |= B0; break;
case 50: tdes.c_cflag |= B50; break;
case 75: tdes.c_cflag |= B75; break;
case 110: tdes.c_cflag |= B110; break;
case 134: tdes.c_cflag |= B134; break;
case 150: tdes.c_cflag |= B150; break;
case 200: tdes.c_cflag |= B200; break;
case 300: tdes.c_cflag |= B300; break;
case 600: tdes.c_cflag |= B600; break;
case 1200: tdes.c_cflag |= B1200; break;
case 1800: tdes.c_cflag |= B1800; break;
case 2400: tdes.c_cflag |= B2400; break;
case 4800: tdes.c_cflag |= B4800; break;
case 9600: tdes.c_cflag |= B9600; break;
case 19200: tdes.c_cflag |= B19200; break;
case 38400: tdes.c_cflag |= B38400; break;
#ifdef B57600
case 57600: tdes.c_cflag |= B57600; break;
#endif
#ifdef B115200
case 115200: tdes.c_cflag |= B115200; break;
#endif
#ifdef B230400
case 230400: tdes.c_cflag |= B230400; break;
#endif
#ifdef B460800
case 460800: tdes.c_cflag |= B460800; break;
#endif
default: tdes.c_cflag |= B38400; break;
};
tdes.c_lflag = 0;
// ISIG | ICANON | XCASE | ECHO | ECHOE | ECHOK | ECHONL |
// NOFLSH | TOSTOP | ECHOCTL | ECHOPRT | ECHOKE | FLUSHO |
// PENDIN | IEXTEN
if (tcsetattr ( fd, TCSANOW, &tdes ) < 0)
{
syslog(LOG_CRIT,"tcsetattr failure: Unable to set port settings!");
close(fd);
return 0;
}
close(fd);
IsSetup = 1;
return 1;
};
int PortParam::RestorePortMode()
{
int fd;
if (!IsSetup) return 1;
if (PortName == NULL)
{
syslog(LOG_WARNING,"Port name is not defined in PortParam::RestorePortMode!");
return 0;
}
// Open port
fd = open( PortName, O_RDWR | O_NONBLOCK);
if (fd == -1)
{
syslog(LOG_WARNING,"Unable to open modem port:");
syslog(LOG_WARNING,PortName);
return 0;
}
if (!isatty(fd))
{
syslog(LOG_WARNING,"Specified device is not a terminal:");
syslog(LOG_WARNING,PortName);
close(fd);
return 0;
}
if (tcsetattr ( fd, TCSANOW, &told ) < 0)
{
syslog(LOG_CRIT,"tcsetattr failure: Unable to set port settings!");
close(fd);
return 0;
}
close(fd);
IsSetup = 0;
return 1;
};
//***************************************************************
//***************************************************************
//
// global functions
//
//***************************************************************
//***************************************************************
char* memstr( char* where, char* what, int howmuch)
{
char* ptrf;
int i,j;
if (strlen(what) >= 1)
{
for (i = 0; i < howmuch; i++)
{
if (what[0] == where[i])
{
// compare further...
j = i + 1;
ptrf = &(what[1]);
while (*ptrf != '\0' && *ptrf == where[j] &&
j < howmuch ) ptrf++,j++;
if (*ptrf == '\0') return &(where[i]);
}
}
return NULL;
}
return where;
}
//***************************************************************
//***************************************************************
//
// class VModem
//
//***************************************************************
//***************************************************************
VModem::VModem(ConfigInfo* con)
{
if (con == NULL)
{
syslog(LOG_ERR, "Empty parameter passed into VModem!");
exit(-1);
}
conf = con;
inData = 0;
inDTMF = 0;
inPubDTMF = 0;
MsgExchTimeOut = 3; // Three seconds time out for now...
StopChild = 0;
ttyParm = new PortParam(conf->SerialPort);
};
int VModem::Init(ConfigInfo* con)
{
if (con == NULL)
{
syslog(LOG_ERR, "Empty parameter passed into VModem!");
return 0;
}
conf = con;
inData = 0;
inDTMF = 0;
inPubDTMF = 0;
MsgExchTimeOut = 3; // Three seconds time out for now...
StopChild = 0;
ttyParm = new PortParam(conf->SerialPort);
return 1;
};
VModem::~VModem()
{
if (isParent)
{
StopRead(); // kill the child process
ttyParm->RestorePortMode();
}
delete ttyParm;
};
//static VModem* TThis;
//static void dispatchsig(int)
//{
// if (TThis) TThis->GotSignal();
//};
//
//static void finishchild(int)
//{
// if (TThis) TThis->GotSignal2();
//};
int VModem::InitRead()
{
// char buf[5]; // Buffer for the characters read from the port.
// For now, read one at a time.
// struct sigaction act, oact;
// Set the port to more appropriate mode -- RAW!!!!
if (ttyParm->SetPortMode(conf->PortSpeed) == 0)
{
return 0;
}
// Open port for reading...
fd = open(conf->SerialPort, O_RDWR/* | O_NONBLOCK*/);
if (fd == -1)
{
syslog(LOG_CRIT,"Unable to open modem port for reading");
return 0;
}
{
struct termios tdes;
if (tcgetattr ( fd, &tdes ) < 0)
{
syslog(LOG_CRIT,"tcgetattr failure");
close(fd);
return 0;
}
tdes.c_iflag = IGNBRK | IGNPAR;
tdes.c_oflag = 0;
tdes.c_cflag = CS8 | HUPCL | CLOCAL | CRTSCTS | CREAD;
switch (conf->PortSpeed)
{
case 0: tdes.c_cflag |= B0; break;
case 50: tdes.c_cflag |= B50; break;
case 75: tdes.c_cflag |= B75; break;
case 110: tdes.c_cflag |= B110; break;
case 134: tdes.c_cflag |= B134; break;
case 150: tdes.c_cflag |= B150; break;
case 200: tdes.c_cflag |= B200; break;
case 300: tdes.c_cflag |= B300; break;
case 600: tdes.c_cflag |= B600; break;
case 1200: tdes.c_cflag |= B1200; break;
case 1800: tdes.c_cflag |= B1800; break;
case 2400: tdes.c_cflag |= B2400; break;
case 4800: tdes.c_cflag |= B4800; break;
case 9600: tdes.c_cflag |= B9600; break;
case 19200: tdes.c_cflag |= B19200; break;
case 38400: tdes.c_cflag |= B38400; break;
#ifdef B57600
case 57600: tdes.c_cflag |= B57600; break;
#endif
#ifdef B115200
case 115200: tdes.c_cflag |= B115200; break;
#endif
#ifdef B230400
case 230400: tdes.c_cflag |= B230400; break;
#endif
#ifdef B460800
case 460800: tdes.c_cflag |= B460800; break;
#endif
default: tdes.c_cflag |= B38400; break;
};
tdes.c_lflag = 0;
if (tcsetattr ( fd, TCSANOW, &tdes ) < 0)
{
syslog(LOG_CRIT,"tcsetattr failure: Unable to set port settings!");
close(fd);
return 0;
}
}
return 1;
// Create a pipe from the child to the parent -- this way we transfer info
// received from the modem. Sorry for these complications, I just
// want to empty the modem buffer as soon as possible.
// if (pipe(pipeD) < 0)
// {
// syslog(LOG_CRIT,"Cannot create a pipe -- Geeeez I hope this is not DOS!");
// return 0;
// }
//
// TThis = this;
//
// // Create a thread that will always read the port.
// ChildID = fork();
// if (ChildID == -1)
// {
// syslog(LOG_CRIT,"Can't fork -- sorry!");
// return 0;
// }
//
// // If this is a parent
// if (ChildID != 0)
// {
//
// // Enable signal handling for the parent.
// act.sa_handler = dispatchsig;
// sigemptyset( &act.sa_mask );
// act.sa_flags = 0;
//
// #ifdef SA_RESTART
// act.sa_flags |= SA_RESTART;
// #endif
//
// if (sigaction( SIGUSR1, &act, &oact) < 0)
// {
// syslog(LOG_CRIT,"Cannot catch SIGUSR1");
// return 0;
// }
//
// close(pipeD[1]);
//
// isParent = 1;
// return 1;
// }
//
// // Child closes receiving end ...
// close(pipeD[0]);
// isParent = 0;
//
// // Enable signal handling for the child.
// act.sa_handler = finishchild;
// sigemptyset( &act.sa_mask );
// act.sa_flags = 0;
//
// #ifdef SA_INTERRUPT
// act.sa_flags |= SA_INTERRUPT;
// #endif
//
// if (sigaction( SIGINT, &act, &oact) < 0)
// {
// syslog(LOG_CRIT,"Cannot catch SIGINT");
// return 0;
// }
//
// ParentID = getppid();
//
// do
// {
// if (read(fd, buf, 1) == 1)
// {
// write(pipeD[1], buf, 1);
// kill(ParentID, SIGUSR1);
//
// buf[1] = '\0';
// //syslog(LOG_DEBUG, "Pushed into pipe:");
// //syslog(LOG_DEBUG, buf );
// }
// } while (StopChild == 0);
//
// close(fd);
// syslog(LOG_DEBUG,"Child terminates.");
// exit(0);
};
void VModem::ReadFromPort()
{
char buf[256];
int numread;
int retval;
fd_set rset;
struct timeval tmdly;
tmdly.tv_sec = 0;
tmdly.tv_usec = 0;
FD_ZERO(&rset);
FD_SET(GetPortFD(), &rset);
retval = select(1+GetPortFD(), &rset, NULL, NULL, &tmdly);
if ( retval < 1 ) return;
numread = read( GetPortFD(), buf, sizeof(buf)-1);
if (numread > 0)
{
buf[numread] = '\0';
//syslog(LOG_DEBUG, "Got:");
//syslog(LOG_DEBUG, buf );
//if (buf[0] == DLE)
//putchar('*');
// Check for DTMF signals.
// They always start with DLE
if (LastRec == DLE)
{
memmove(&(buf[1]), buf, numread);
numread++;
buf[0] = DLE;
}
LastRec = DLE;
for ( int i = 0; i < numread-1; i++ )
{
if (buf[i] == DLE)
{
// DLE was detected! Decode it.
if ( buf[i+1] == DLE ) // Received double DLE, just make it one
{
if ( i+2 == numread ) LastRec = 0; // Last DLE not to be counted
memmove(&buf[i],&buf[i+1],numread - i - 1);
numread--;
} else // DTMF command, decode it.
{
DTMF[inDTMF] = buf[i+1];
inDTMF++;
if ( numread - i - 2 > 0 ) // Remove DTMF from the data stream
{
memmove(&buf[i],&buf[i+2],numread - i - 2);
i--;
}
numread = numread - 2;
}
}
}
if ( numread == 0)
{
LastRec = 0;
return;
}
if ( buf[numread-1] != DLE ) LastRec = 0;
if (LastRec == DLE) return;
// We need to add received data to the buffer...
// Check for overflow situation
if ((unsigned int)(inData + numread + 2) > sizeof(Data))
{
syslog(LOG_WARNING,"Incoming buffer overflow, ... truncating");
char* to = Data;
char* from = Data + sizeof(Data)/2;
for (unsigned int i = 0; i < sizeof(Data); i++)
{
*to++ = *from++;
}
inData -= sizeof(Data)/2;
}
for (int i = 0; i < numread; i++)
{
Data[inData++] = buf[i];
}
}
};
// Execute sequence of commands. If some commands
// times out, will repeat it up to three times
int VModem::ExecuteSequence( CommandSequence* CommandSeq )
{
int retval;
CommandSequence* cmd = CommandSeq;
while( cmd )
{
retval = 0;
for (int i = 0; i < 3; i++)
{
if (MsgExchange(cmd->GetCommand(), cmd->GetAnswer()) >= 0)
{
retval = 1;
break;
}
}
if (!retval) return 0;
cmd = cmd->GetNext();
}
return 1;
}
int VModem::MsgExchange( char* MsgSnd, char* MsgExpect )
{
PREP_ALARM;
char newline[3] = {'\015','\012','\0'};
int ExchComplete = 0;
char allbuf[256];
strcpy(allbuf, MsgSnd);
strcat(allbuf, newline);
// sigset_t usrmask, oldmask;
FlushRecBuffer();
CHECK_ABORT_0;
syslog(LOG_DEBUG,"Sending:");
syslog(LOG_DEBUG,MsgSnd);
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
write( GetPortFD(), allbuf, strlen(allbuf));
// write( GetPortFD(), buf, sizeof(buf));
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// syslog(LOG_ERR, "Unable to restore a signal mask!");
CHECK_ABORT_0;
SET_ALARM(MsgExchTimeOut);
usleep(24000000/conf->PortSpeed);
do
{
ExchComplete = CheckBuffer( MsgExpect );
if (MState.AbortCommand)
{
RESET_ALARM;
return 0;
}
// sleep long enough to receive at least 2 bytes.
usleep(24000000/conf->PortSpeed);
} while (!ExchComplete && !iTimedOut);
if (iTimedOut)
{
RESET_ALARM;
syslog(LOG_ERR,"Time out in MsgExchange!\n");
return -1;
}
RESET_ALARM;
if (ExchComplete == -1)
{
syslog(LOG_ERR, "Error received! Could be incompatible modem!");
return 0;
};
return 1;
}
int VModem::CheckBuffer( char* MsgStr, char* SavTo, int* Num, int DelOnNF )
{
int retval = 0;
int matchlen;
char srchMsk[512];
char *ptr = MsgStr;
char *ptrto, *found;
// sigset_t usrmask, oldmask;
ReadFromPort();
if (Num != NULL) *Num = 0;
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
Data[inData] = '\0';
// if (!DelOnNF && inData > 2)
// {
// syslog(LOG_DEBUG,"In buffer of Check Buffer:");
// syslog(LOG_DEBUG,Data);
// }
matchlen = 7; // Sizeof --vvvvvvvvv
if ((found = memstr(Data, ERROR_CMD, inData)) == NULL)
{
while ( *ptr != '\0' )
{
// Extract the new line to search...
ptrto = srchMsk;
while (*ptr != '\0' && *ptr != '|')
{
*ptrto = *ptr;
ptrto++; ptr++;
}
// Append cr lf to the end of mask...
*ptrto++ = '\015';
*ptrto++ = '\012';
*ptrto = '\0';
if (*ptr == '|') ptr++;
matchlen = strlen(srchMsk);
if ((found = memstr(Data, srchMsk, inData)) != NULL)
{
retval = 1;
break;
}
}
} else retval = -1;
// Save all info up to the found string
if (SavTo != NULL)
{
int size;
if (found == NULL)
{
size = ( inData > 100 )?inData - 100: 0;
} else
{
size = (found - Data);
}
for(*Num = 0; (*Num) < size; (*Num)++)
{
SavTo[*Num] = Data[*Num];
}
}
// Remove all info in the buffer up to this message
if ( found != NULL )
{
int size = matchlen + ( found - Data );
if ( size > 1 )
{
Data[size-2] = '\0';
syslog(LOG_DEBUG,"Received:");
syslog(LOG_DEBUG,found);
// Surgical operation, removing the message:
// If you are brave, you can use strncpy ;-)
for (int i = 0; i < (inData - size); i++)
{
Data[i] = Data[i+size];
}
inData -= size;
} else
{
syslog(LOG_ERR,"Detect line length is not correct!");
}
} else
{
if ( Num != NULL && *Num > 0 && DelOnNF)
{
for (int i = 0; i < (inData - (*Num)); i++)
{
Data[i] = Data[i + *Num];
}
inData -= (*Num);
}
}
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// {
// syslog(LOG_ERR, "Unable to restore a signal mask!");
// }
return retval;
};
// Returns 0 - some fatal error
// -1 - time out
// 1 - success
// -2 - aborted (by DTMF signal, etc.)
int VModem::GrabAFile( char* FName,
char* MsgSnd,
char* MsgExpect,
char* MsgUntil )
{
PREP_ALARM;
// sigset_t usrmask, oldmask;
char datbuf[BUFFER_SIZE+1];
char newline[3] = {'\015','\012','\0'};
int ExchComplete = 0;
char allbuf[256];
int sfp;
MState.StopTransmit = 0;
MState.Recording = 1;
sfp = creat(FName, 0644);
if ( sfp == -1 )
{
syslog(LOG_ERR, "Unable to create the file:" );
syslog(LOG_ERR, FName );
return 0;
}
strcpy(allbuf, MsgSnd);
strcat(allbuf, newline);
iTimedOut = 0;
CHECK_ABORT_0;
if (MState.StopTransmit) return -2;
FlushRecBuffer();
syslog(LOG_DEBUG,"Sending:");
syslog(LOG_DEBUG,MsgSnd);
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
write( GetPortFD(), allbuf, strlen(allbuf));
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// syslog(LOG_ERR, "Unable to restore a signal mask!");
CHECK_ABORT_0;
if (MState.StopTransmit) return -2;
SET_ALARM(MsgExchTimeOut);
usleep(24000000/conf->PortSpeed);
do
{
ExchComplete = CheckBuffer( MsgExpect );
if (MState.AbortCommand || MState.StopTransmit)
{
RESET_ALARM;
close( sfp );
return -2;
}
// sleep long enough to receive at least 2 bytes.
usleep(24000000/conf->PortSpeed);
} while (!ExchComplete && !iTimedOut);
if (iTimedOut)
{
RESET_ALARM;
syslog(LOG_ERR,"Time out in MsgExchange!\n");
close( sfp );
return -1;
}
RESET_ALARM;
if (ExchComplete == -1)
{
syslog(LOG_ERR, "Error received! Could be incompatible modem!");
close( sfp );
return 0;
}
// We should have received CONNECT by now. Get all the data from the
// modem and write to the file.
int AbortTransfer = 0;
int AbortSent = 0;
do
{
int bytesRec;
ExchComplete = CheckBuffer( MsgUntil, datbuf, &bytesRec );
if (bytesRec != 0)
{
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// sigaddset(&usrmask, SIGURG );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
write( sfp, datbuf, bytesRec);
if ((MState.AbortCommand || MState.StopTransmit) && !AbortSent)
{
char done[2] = { DLE, ETX };
AbortSent = 1;
write( GetPortFD(), done, 2);
}
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// syslog(LOG_ERR, "Unable to restore a signal mask!");
}
if (inDTMF)
{
AbortTransfer = ProcessDTMF();
}
// sleep long enough to receive at least 2 bytes.
usleep(24000000/conf->PortSpeed);
} while (!ExchComplete && !AbortTransfer);
close( sfp );
return 1;
}
int VModem::ProcessDTMF()
{
// sigset_t usrmask, oldmask;
char localDTMF[DTMF_SIZE];
int inlocalDTMF;
int retval = 0;
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
inlocalDTMF = inDTMF;
memcpy(localDTMF, DTMF, inDTMF);
inDTMF = 0;
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// syslog(LOG_ERR, "Unable to restore a signal mask!");
for (int i = 0; i < inlocalDTMF; i++)
{
retval = ProcessDTMFChar( localDTMF[i] );
if (retval) break;
}
return retval;
}
int VModem::ProcessDTMFChar(char DTM)
{
// sigset_t usrmask, oldmask;
char buf[256];
int retval = 0;
sprintf( buf, "Received DTMF signal:'%c'",DTM );
syslog(LOG_DEBUG,buf);
switch (DTM)
{
case 'q':
case 's':
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
write( GetPortFD(), "!", 1); // Just abort reception :-)
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// syslog(LOG_ERR, "Unable to restore a signal mask!");
if (inPubDTMF >= 0 && inPubDTMF < PUBDTMFSIZE)
PubDTMF[inPubDTMF++] = DTM;
break;
case ETX:
retval = 1;
break;
case '#':
MState.StopTransmit = 1;
case '*':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case 'A':
case 'B':
case 'C':
case 'D':
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'h':
if (inPubDTMF >= 0 && inPubDTMF < PUBDTMFSIZE)
PubDTMF[inPubDTMF++] = DTM;
if (!MState.Recording && !MState.IgnoreDTMF)
{
MState.StopTransmit = 1;
}
break;
default:
break;
}
return retval;
}
int VModem::GetPubDTMF(char* ARRAY)
{
ProcessDTMF(); /* Grab additional DTMF characters */
for(int i=0; i<inPubDTMF; i++) ARRAY[i]=PubDTMF[i];
return inPubDTMF;
}
//
// Double all DLE's in the buffer and remove frames damaged by
// USR bugs.
//
void ProcessBuffer(unsigned char* datbuf, int& bytesRec, int LastRec,
unsigned char* sndbuf, int& bytesSnd, int CheckGSM)
{
int frameptr = 0;
int srcptr = 0;
int dstptr = 0;
while ( frameptr + 37 < bytesRec )
{
if (CheckGSM)
{
// Check completeness of GSM Frame
while(!((datbuf[frameptr+36] == 0xA5 && datbuf[frameptr+37] == 0xA5) &&
(datbuf[frameptr] == 0xB6 && datbuf[frameptr+1] == 0xB6 ||
datbuf[frameptr] == 0xFE && datbuf[frameptr+1] == 0xFE)))
{
frameptr++;
// Just check that we did not go over board
if ( frameptr + 38 >= bytesRec ) break;
}
if ( frameptr + 38 >= bytesRec ) break;
}
// Transfer all the data...
for ( srcptr = frameptr; srcptr < frameptr + 38; srcptr++ )
{
sndbuf[dstptr++] = datbuf[srcptr];
if ( datbuf[srcptr] == DLE )
{
sndbuf[dstptr++] = DLE;
}
}
frameptr += 38;
}
if (srcptr < bytesRec)
memmove(datbuf, &(datbuf[srcptr]), bytesRec - srcptr);
bytesRec = bytesRec - srcptr;
bytesSnd = dstptr;
if ( LastRec == 0 )
bytesRec = 0;
};
// Returns 0 - some fatal error
// -1 - time out
// 1 - success
// -2 - aborted (by DTMF signal, etc.)
int VModem::SendAFile( char* FName,
char* MsgSnd,
char* MsgExpect,
char* MsgUntil )
{
PREP_ALARM;
// sigset_t usrmask, oldmask;
char datbuf[BUFFER_SIZE/4];
char sndbuf[BUFFER_SIZE/2];
char newline[3] = {'\015','\012','\0'};
int ExchComplete = 0;
char allbuf[256];
int sfp;
MState.StopTransmit = 0;
MState.Recording = 0;
sfp = open(FName, O_RDONLY);
if ( sfp == -1 )
{
syslog(LOG_ERR, "Unable to open the file:" );
syslog(LOG_ERR, FName );
return 0;
}
strcpy(allbuf, MsgSnd);
strcat(allbuf, newline);
iTimedOut = 0;
FlushRecBuffer();
syslog(LOG_DEBUG,"Sending:");
syslog(LOG_DEBUG,MsgSnd);
ABORT_CLOSE;
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
write( GetPortFD(), allbuf, strlen(allbuf));
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// syslog(LOG_ERR, "Unable to restore a signal mask!");
ABORT_CLOSE;
SET_ALARM(MsgExchTimeOut);
usleep(24000000/conf->PortSpeed);
do
{
ExchComplete = CheckBuffer( MsgExpect );
if (MState.AbortCommand || MState.StopTransmit)
{
RESET_ALARM;
close(sfp);
return 0;
}
// sleep long enough to receive at least 2 bytes.
usleep(24000000/conf->PortSpeed);
} while (!ExchComplete && !iTimedOut);
if (iTimedOut)
{
RESET_ALARM;
syslog(LOG_ERR,"Time out in MsgExchange!\n");
close( sfp );
return -1;
}
RESET_ALARM;
ABORT_CLOSE;
if (ExchComplete == -1)
{
syslog(LOG_ERR, "Error received! Could be incompatible modem!");
close( sfp );
return 0;
}
// We should have received CONNECT by now. Get all the data from the
// file and write to the modem.
int AbortTransfer = 0;
int bytesRec = 0;
int bytesSnd;
int inBuffer = 0;
int complete = 0;
do
{
if ( inBuffer > 38 ) inBuffer = 0; // Flush overfilled buffer...
bytesRec = read(sfp, &(datbuf[inBuffer]), sizeof(datbuf) - inBuffer - 1);
inBuffer += bytesRec;
ProcessBuffer((unsigned char*)datbuf, inBuffer,
bytesRec, (unsigned char*)sndbuf, bytesSnd, conf->CheckGSM);
if (bytesSnd != 0 && !(MState.AbortCommand || MState.StopTransmit))
{
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// sigaddset(&usrmask, SIGURG );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
write( GetPortFD(), sndbuf, bytesSnd);
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// syslog(LOG_ERR, "Unable to restore a signal mask!");
} else
{
if ( ! complete )
{
char done[2] = { DLE, ETX };
// sigemptyset( &usrmask );
// sigaddset(&usrmask, SIGUSR1 );
// sigaddset(&usrmask, SIGURG );
// if (sigprocmask( SIG_BLOCK,&usrmask, &oldmask) < 0)
// syslog(LOG_ERR, "Unable to set a signal mask!");
write( GetPortFD(), done, 2);
// if (sigprocmask( SIG_SETMASK,&oldmask, NULL) < 0)
// syslog(LOG_ERR, "Unable to restore a signal mask!");
complete = 1;
}
}
ExchComplete = CheckBuffer( MsgUntil );
if (inDTMF)
{
AbortTransfer = ProcessDTMF();
}
} while ( !ExchComplete && !AbortTransfer);
close( sfp );
return 1;
}
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