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|
/*
* shell.c
*
* Executes the shell script given as the argument. If the argument is
* empty, commands are read from standard input.
*
* $Id: shell.c,v 1.18 2002/02/19 10:25:23 gert Exp $
*
*/
#include "../include/voice.h"
static int events_to_shell = FALSE;
int voice_shell_state = OFF_LINE;
int voice_shell_linger = 0;
static int voice_shell_input_fd = NO_VOICE_FD;
static int voice_shell_output_fd = NO_VOICE_FD;
static int child_pid = 0;
static int level = 0;
static int autostop = FALSE;
const char ErrorString[] = "ERROR";
const char ReadyString[] = "READY" ;
const char Device_not_avail_String[] = "DEVICE_NOT_AVAILABLE" ;
int voice_execute_shell_script(char *shell_script, char **shell_options)
{
int arg_index = 0;
int start_index;
char **shell_arguments;
int should_close_2 = 0;
if (strlen(shell_script) == 0)
lprintf(L_MESG, "%s: Executing shell %s", program_name, shell_script, cvd.voice_shell.d.p);
else
lprintf(L_MESG, "%s: Executing shell script %s with shell %s", program_name, shell_script,
cvd.voice_shell.d.p);
if (cvd.voice_shell_log.d.p && ((char *) cvd.voice_shell_log.d.p)[0])
{
char log_file_name[MAXPATH];
if ( strlen( cvd.voice_shell_log.d.p ) + strlen( DevID ) + 5 >
sizeof( log_file_name ) )
{
lprintf( L_WARN, "%s: path name for shell log too long - ignoring",
program_name );
}
else {
int shell_stderr_fd;
sprintf( log_file_name, cvd.voice_shell_log.d.p, DevID );
shell_stderr_fd = open(log_file_name,
O_WRONLY | O_CREAT | O_APPEND, 0600);
/* FIXME: this really should go after the fork() call, as
* it will destroy vgetty's fd = 2, which might be needed
* later on (if the call switches to data, and we hand over
* to /bin/login and /bin/sh later) - gert.
*/
if (shell_stderr_fd != -1) {
/* This means we are going to close the old fd 2 if any */
if (dup2(shell_stderr_fd, 2) == -1)
{
lprintf(L_ERROR, "%s: couldn't dup2() shell log file",
program_name);
}
else {
should_close_2 = 1;
}
close(shell_stderr_fd);
}
else {
lprintf(L_ERROR,
"%s: couldn't open() shell log file %s",
program_name,
log_file_name);
}
}
}
if (getenv("VOICE_PID") == NULL)
{
int parent_pid = getpid();
int pipe_in[2];
int pipe_out[2];
lprintf(L_JUNK, "%s: opening pipes", program_name);
if (pipe(pipe_in))
{
lprintf(L_WARN, "%s: cannot open input pipe!", program_name);
return(FAIL);
};
if (pipe(pipe_out))
{
lprintf(L_WARN, "%s: cannot open output pipe!", program_name);
return(FAIL);
};
lprintf(L_JUNK, "%s: forking shell", program_name);
switch((child_pid = fork()))
{
case -1:
lprintf(L_WARN, "%s: cannot fork!", program_name);
return(FAIL);
break;
case 0:
{
char buffer1[VOICE_BUF_LEN];
char buffer2[VOICE_BUF_LEN];
char buffer3[VOICE_BUF_LEN];
char buffer4[VOICE_BUF_LEN];
/*
if (strcmp(program_name, "vgetty") == 0)
{
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
}
else
close(voice_fd);
*/
close(pipe_in[1]);
close(pipe_out[0]);
sprintf(buffer1, "VOICE_PID=%d", parent_pid);
putenv(buffer1);
sprintf(buffer2, "VOICE_PROGRAM=%s", program_name);
putenv(buffer2);
sprintf(buffer3, "VOICE_INPUT=%d", pipe_in[0]);
putenv(buffer3);
sprintf(buffer4, "VOICE_OUTPUT=%d", pipe_out[1]);
putenv(buffer4);
break;
};
default:
{
int child_status;
voice_shell_input_fd = pipe_out[0];
voice_shell_output_fd = pipe_in[1];
close(pipe_in[0]);
close(pipe_out[1]);
if (should_close_2) {
close(2); /* from the dup2 */
}
if (voice_write_shell("HELLO SHELL") != OK)
return(FAIL);
voice_shell_state = INITIALIZING;
while ((wait(&child_status) == -1) && (errno == EINTR))
voice_check_events();
voice_shell_state = OFF_LINE;
close(voice_shell_input_fd);
close(voice_shell_output_fd);
if (WIFEXITED(child_status) != 0)
{
child_status = WEXITSTATUS(child_status);
lprintf(L_NOISE,
"%s: shell exited normally with status 0x%04x",
program_name, child_status);
return(child_status);
};
lprintf(L_NOISE,
"%s: shell exited not normally with status 0x%x",
program_name, child_status);
return(FAIL);
};
};
};
if (shell_options != NULL)
for (arg_index = 0; shell_options[arg_index] != NULL; arg_index++)
;
shell_arguments = (char**) malloc((3 + arg_index) * sizeof(char*));
start_index = 1;
shell_arguments[0] = cvd.voice_shell.d.p;
if (strlen(shell_script) != 0)
{
start_index = 2;
shell_arguments[1] = shell_script;
};
if (shell_options != NULL)
for (arg_index = 0; shell_options[arg_index] != NULL; arg_index++)
shell_arguments[arg_index + start_index] =
shell_options[arg_index];
shell_arguments[arg_index + start_index] = NULL;
execv(cvd.voice_shell.d.p, shell_arguments);
lprintf(L_WARN, "%s: cannot execute %s %s", program_name,
cvd.voice_shell.d.p, shell_script);
exit(99);
}
/*
* variables to set by voice_fax.c
*/
int voice_fax_hangup_code;
char *voice_fax_remote_id;
int voice_fax_pages;
char *voice_fax_files;
int voice_shell_notify()
{
voice_write_shell("HUP_CODE\n%d", voice_fax_hangup_code);
voice_write_shell("REMOTE_ID\n%s", voice_fax_remote_id);
if (voice_fax_files != NULL) {
char **ap, *av[100];
char *cp = voice_fax_files;
int i, n;
for (ap = av, n = 0; (*ap = voice_strsep(&cp, " \t")) != NULL;)
if (**ap != '\0') {
++ap;
++n;
}
if (n > 0) {
voice_write_shell("FAX_FILES\n%d", n);
for (i = 0; i < n; i++)
voice_write_shell("%s", av[i]);
}
}
return 0;
}
int voice_shell_handle_event(int event, event_data data)
{
if (voice_shell_state == OFF_LINE)
return(UNKNOWN_EVENT);
if (event == SIGNAL_SIGCHLD)
{
voice_shell_state = OFF_LINE;
voice_shell_linger = 0;
voice_stop_current_action();
return(OK);
};
if (event == SIGNAL_SIGPIPE)
{
char buffer[VOICE_BUF_LEN];
level++;
if (voice_read_shell(buffer) != OK)
return(FAIL);
if (voice_shell_state == INITIALIZING)
{
if (strcmp(buffer, "HELLO VOICE PROGRAM") != 0)
{
lprintf(L_WARN, "%s: cannot initialize communication!", program_name);
voice_shell_state = OFF_LINE;
return(FAIL);
};
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
voice_shell_state = ON_LINE;
lprintf(L_NOISE, "%s: initialized communication", program_name);
}
else
{
if (strncmp(buffer, "STOP", 4) == 0)
{
switch (voice_modem_state)
{
case DIALING:
case PLAYING:
case RECORDING:
case WAITING:
voice_shell_linger = 0;
voice_stop_current_action();
break;
case IDLE:
lprintf(L_NOISE, "%s: STOP during IDLE", program_name);
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
break;
default:
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
};
}
else if (level != 1)
{
lprintf(L_MESG, "%s: Nested command in shell script", program_name);
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "BEEP", 4) == 0)
{
int frequency = cvd.beep_frequency.d.i;
int length = cvd.beep_length.d.i;
sscanf(buffer, "%*s %d %d", &frequency, &length);
if (voice_write_shell("BEEPING") != OK)
return(FAIL);
if (voice_beep(frequency, length) != OK)
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "QUOTE", 5) == 0)
{
char quoted_cmd[VOICE_BUF_LEN] = "";
sscanf(buffer, "%*s %s", quoted_cmd);
lprintf(L_MESG, "%s: SENDING QUOTED CMD \"%s\"",
program_name, quoted_cmd);
if (voice_command(quoted_cmd, "OK") == VMA_FAIL)
{
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
}
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "DEVICE", 6) == 0)
{
char device[VOICE_BUF_LEN] = "";
int ResultCode = FAIL;
sscanf(buffer, "%*s %s", device);
if (strcmp(device, "NO_DEVICE") == 0)
ResultCode = voice_set_device(NO_DEVICE);
else if (strcmp(device, "DIALUP_LINE") == 0)
ResultCode = voice_set_device(DIALUP_LINE);
else if (strcmp(device, "INTERNAL_MICROPHONE") == 0)
ResultCode = voice_set_device(INTERNAL_MICROPHONE);
else if (strcmp(device, "EXTERNAL_MICROPHONE") == 0)
ResultCode = voice_set_device(EXTERNAL_MICROPHONE);
else if (strcmp(device, "INTERNAL_SPEAKER") == 0)
ResultCode = voice_set_device(INTERNAL_SPEAKER);
else if (strcmp(device, "EXTERNAL_SPEAKER") == 0)
ResultCode = voice_set_device(EXTERNAL_SPEAKER);
else if (strcmp(device, "LOCAL_HANDSET") == 0)
ResultCode = voice_set_device(LOCAL_HANDSET);
else if (strcmp(device, "DIALUP_WITH_EXT_SPEAKER") == 0)
ResultCode = voice_set_device(DIALUP_WITH_EXT_SPEAKER);
else if (strcmp(device, "DIALUP_WITH_INT_SPEAKER") == 0)
ResultCode = voice_set_device(DIALUP_WITH_INT_SPEAKER);
else if (strcmp(device, "DIALUP_WITH_LOCAL_HANDSET") == 0)
ResultCode = voice_set_device(DIALUP_WITH_LOCAL_HANDSET);
else if (strcmp(device, "DIALUP_WITH_EXTERNAL_MIC_AND_SPEAKER") == 0)
ResultCode
= voice_set_device(DIALUP_WITH_EXTERNAL_MIC_AND_SPEAKER);
else if (strcmp(device, "DIALUP_WITH_INTERNAL_MIC_AND_SPEAKER") == 0)
ResultCode
= voice_set_device(DIALUP_WITH_INTERNAL_MIC_AND_SPEAKER);
else if (voice_write_shell(ErrorString) != OK)
return(FAIL);
switch(ResultCode)
{
case OK:
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
break;
case VMA_DEVICE_NOT_AVAIL:
if (voice_write_shell(Device_not_avail_String) != OK)
return(FAIL);
break;
default: /* FAIL and unknown return values */
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
break;
} /* switch(ResultCode) */
}
else if (strncmp(buffer, "DIAL", 4) == 0)
{
char phone_number[VOICE_BUF_LEN] = "";
sscanf(buffer, "%*s %s", phone_number);
if (voice_write_shell("DIALING") != OK)
return(FAIL);
if (voice_dial((void *) phone_number) == FAIL)
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "DISABLE EVENTS", 14) == 0)
{
events_to_shell = FALSE;
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "ENABLE EVENTS", 13) == 0)
{
events_to_shell = TRUE;
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strcmp(buffer, "GET TTY") == 0)
{
if (voice_write_shell(DevID) != OK)
return(FAIL);
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
/* -- alborchers@steinerpoint.com */
else if (strcmp(buffer, "GET MODEM") == 0)
{
if (voice_write_shell(voice_modem_name) != OK)
return(FAIL);
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strcmp(buffer, "AUTOSTOP ON") == 0)
{
autostop = TRUE;
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strcmp(buffer, "AUTOSTOP OFF") == 0)
{
autostop = FALSE;
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strcmp(buffer, "GOODBYE") == 0)
{
if (voice_write_shell("GOODBYE SHELL") != OK)
return(FAIL);
}
else if (strncmp(buffer, "GETFAX", 6) == 0)
{
char path[VOICE_BUF_LEN] = "/tmp";
/*
if (voice_device != DIALUP_LINE)
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
*/
sscanf(buffer, "%*s %s", path);
if (voice_write_shell("RECEIVING") != OK)
return(FAIL);
if (enter_data_fax_mode(ANSWER_FAX)
== FAIL) {
lprintf(L_WARN, "%s: Could not switch to fax mode",
program_name);
/* otherwise result ignored, which is already much
* better than before.
*/
}
voice_write("ATA"); /* faxrec will eat the rest */
voice_faxrec(path, 0);
voice_init();
voice_mode_on();
voice_set_device(DIALUP_LINE);
voice_shell_notify();
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "SENDFAX", 7) == 0)
{
char *cp = &buffer[7];
char **ap, *av[100];
for (ap = av; (*ap = voice_strsep(&cp, " \t")) != NULL;)
if (**ap != '\0')
++ap;
if (av[0] != NULL)
{
if (enter_data_fax_mode(ANSWER_FAX)
== FAIL) {
lprintf(L_WARN, "%s: Could not switch to fax mode",
program_name);
/* otherwise result ignored, which is already much
* better than before.
*/
}
voice_faxsnd(av, 0, 3);
voice_init();
voice_mode_on();
voice_set_device(DIALUP_LINE);
voice_shell_notify();
}
else
{
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
}
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "PLAY", 4) == 0)
{
char name[VOICE_BUF_LEN] = "";
voice_shell_linger = 0; /* -- alborchers@steinerpoint.com */
sscanf(buffer, "%*s %s %d", name, &voice_shell_linger);
if (strlen(name) != 0)
{
if (voice_write_shell("PLAYING") != OK)
return(FAIL);
if (voice_play_file(name) == FAIL)
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
}
else
{
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
}
voice_shell_linger = 0;
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "RECORD", 6) == 0)
{
char name[VOICE_BUF_LEN] = "";
sscanf(buffer, "%*s %s", name);
if (strlen(name) != 0)
{
if (voice_write_shell("RECORDING") != OK)
return(FAIL);
if (voice_record_file(name) != OK)
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
}
else
{
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
}
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "WAIT", 4) == 0)
{
int length = cvd.rec_silence_len.d.i / 10;
sscanf(buffer, "%*s %d", &length);
if (voice_write_shell("WAITING") != OK)
return(FAIL);
if (voice_wait(length) != OK)
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else if (strncmp(buffer, "DTMF", 4) == 0)
{
char number[VOICE_BUF_LEN] = "";
sscanf(buffer, "%*s %s", number);
if (voice_write_shell("DTMFING") != OK)
return(FAIL);
if (voice_play_dtmf(number) == FAIL)
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
if (voice_write_shell(ReadyString) != OK)
return(FAIL);
}
else
{
if (voice_write_shell(ErrorString) != OK)
return(FAIL);
}
};
level--;
return(OK);
};
if ((voice_shell_state == ON_LINE) && (event == RECEIVED_DTMF) && autostop)
switch (voice_modem_state)
{
case WAITING:
if( voice_shell_linger > 0 )
break;
case PLAYING:
case RECORDING:
lprintf(L_JUNK, "%s: stopping current action", program_name);
voice_stop_current_action();
break;
}
if ((voice_shell_state == ON_LINE) && (!events_to_shell) && ((event & VOICE_MODEM_EVENT) != 0))
return(OK);
if ((voice_shell_state == ON_LINE) && events_to_shell && ((event & VOICE_MODEM_EVENT) != 0))
{
switch (event)
{
case BONG_TONE:
if (voice_write_shell("BONG_TONE") != OK)
return(FAIL);
return(OK);
case BUSY_TONE:
if (voice_write_shell("BUSY_TONE") != OK)
return(FAIL);
return(OK);
case CALL_WAITING:
if (voice_write_shell("CALL_WAITING") != OK)
return(FAIL);
return(OK);
case DIAL_TONE:
if (voice_write_shell("DIAL_TONE") != OK)
return(FAIL);
return(OK);
case DATA_CALLING_TONE:
if (voice_write_shell("DATA_CALLING_TONE") != OK)
return(FAIL);
return(OK);
case DATA_OR_FAX_DETECTED:
if (voice_write_shell("DATA_OR_FAX_DETECTED") != OK)
return(FAIL);
return(OK);
case FAX_CALLING_TONE:
if (voice_write_shell("FAX_CALLING_TONE") != OK)
return(FAIL);
return(OK);
case HANDSET_ON_HOOK:
if (voice_write_shell("HANDSET_ON_HOOK") != OK)
return(FAIL);
return(OK);
case HANDSET_OFF_HOOK:
if (voice_write_shell("HANDSET_OFF_HOOK") != OK)
return(FAIL);
return(OK);
case LOOP_BREAK:
if (voice_write_shell("LOOP_BREAK") != OK)
return(FAIL);
return(OK);
case LOOP_POLARITY_CHANGE:
if (voice_write_shell("LOOP_POLARITY_CHANGE") != OK)
return(FAIL);
return(OK);
case NO_ANSWER:
if (voice_write_shell("NO_ANSWER") != OK)
return(FAIL);
return(OK);
case NO_CARRIER:
if (voice_write_shell("NO_CARRIER") != OK)
return(FAIL);
return(OK);
case NO_DIAL_TONE:
if (voice_write_shell("NO_DIAL_TONE") != OK)
return(FAIL);
return(OK);
case NO_VOICE_ENERGY:
if (voice_write_shell("NO_VOICE_ENERGY") != OK)
return(FAIL);
return(OK);
case RING_DETECTED:
if (voice_write_shell("RING_DETECTED") != OK)
return(FAIL);
return(OK);
case RINGBACK_DETECTED:
if (voice_write_shell("RINGBACK_DETECTED") != OK)
return(FAIL);
return(OK);
case RECEIVED_DTMF:
if (voice_write_shell("RECEIVED_DTMF") != OK)
return(FAIL);
if (voice_write_shell("%c", data.c) != OK)
return(FAIL);
;
return(OK);
case SILENCE_DETECTED:
if (voice_write_shell("SILENCE_DETECTED") != OK)
return(FAIL);
return(OK);
case SIT_TONE:
if (voice_write_shell("SIT_TONE") != OK)
return(FAIL);
return(OK);
case TDD_DETECTED:
if (voice_write_shell("TDD_DETECTED") != OK)
return(FAIL);
return(OK);
case VOICE_DETECTED:
if (voice_write_shell("VOICE_DETECTED") != OK)
return(FAIL);
return(OK);
};
};
return(UNKNOWN_EVENT);
}
int voice_read_shell(char *buffer)
{
char char_read;
int number_chars = 0;
lprintf(L_NOISE, "shell(%d): ", level);
do
{
if (read(voice_shell_input_fd, &char_read, 1) != 1)
{
lprintf(L_WARN, "could not read from shell");
if (child_pid != 0)
kill(child_pid, SIGKILL);
return(FAIL);
};
if (char_read != NL)
{
*buffer = char_read;
buffer++;
number_chars++;
lputc(L_NOISE, char_read);
};
}
while (((char_read != NL) || (number_chars == 0)) &&
(number_chars < (VOICE_BUF_LEN - 1)));
*buffer = 0x00;
return(OK);
}
#if !defined(NeXT) || defined(NEXTSGTTY)
# ifdef USE_VARARGS
# include <varargs.h>
# else
# include <stdarg.h>
# endif
#else
# include "../include/NeXT.h"
#endif
#ifdef USE_VARARGS
int voice_write_shell(format, va_alist)
const char *format;
va_dcl
#else
int voice_write_shell(const char *format, ...)
#endif
{
va_list arguments;
char answer[VOICE_BUF_LEN];
#ifdef USE_VARARGS
va_start(arguments);
#else
va_start(arguments, format);
#endif
vsprintf(answer, format, arguments);
va_end(arguments);
lprintf(L_NOISE, "%s(%d): %s", program_name, level, answer);
if ((write(voice_shell_output_fd, answer, strlen(answer)) !=
strlen(answer)) || (write(voice_shell_output_fd, "\n", 1) != 1))
{
lprintf(L_WARN, "%s: could not write to shell", program_name);
if (child_pid != 0)
kill(child_pid, SIGKILL);
return(FAIL);
};
return(OK);
}
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