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/* This is copyrighted software but you may use/distribute it *
* in accordance with the conditions set out in the file COPYING */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <signal.h>
#include <unistd.h>
#include "defs.h"
int
main (int argc, char **argv)
{
int i, j;
char cin[INBUF];
char *ep;
/* Do essential initialization */
always ();
pathinit ();
syminit ();
cin[0] = '\n';
cin[1] = '\0';
/* Always have SOME drive mapped */
if (getcwd (cmdv, cmdvc) != NULL)
{
if (map (2, "/"))
{
plerr (PLINK);
quitstat = 1;
}
else
{
if (!chdir (cmdv))
{
if (setlo (2, cmdv))
{
plerr (PLPNF);
}
}
else
{
plerr (PLPNF);
}
}
}
else
{
plerr (PLPNF);
if (map (2, "/"))
{
plerr (PLINK);
quitstat = 1;
}
}
/* If we are a login shell, set up shell level and trap TERM */
if (argv[0][0] == '-' || getppid () == 1)
{
setenv (STRSHLVL, "1", 1);
signal (SIGTERM, SIG_IGN);
/* check for mail */
mailbytes = countmail ();
if (mailbytes && isatty (STDOUT_FILENO))
{
printf ("You have Mail [%d bytes]\n", mailbytes);
}
}
/* We should initialize if we start with a '-', are a child */
/* of init or have been told by the variable in the environment */
if (argv[0][0] == '-' || (getenv (STRNOUNINIT) != NULL) || getppid () == 1)
{
#ifdef DEBUG
fprintf (stderr, "We want to be initialized\n");
#endif
sprintf (cmdv, "%d", getuid ());
setenv ("UID", cmdv, 1);
sprintf (cmdv, "%d", getgid ());
setenv ("GID", cmdv, 1);
/* run the global autoexec first */
cmdrun ("/etc/autoexec", stdout);
/* run the autoexec for that group (redundant) */
/* sprintf(cmdv,"/etc/autoexec.%d",getgid()); */
/* cmdrun(cmdv,stdout); */
/* check out any environment variables */
introspect ();
/* Trap ^C */
signal (SIGINT, SIG_IGN);
/* run the users autoexec here - */
ep = getenv ("HOME");
if (ep != NULL)
{
/* use an absolute path, relying on previous progs to set up HOME variable */
#ifdef DEBUG
fprintf (stderr, "Home dir is %s\n", ep);
#endif
strcpy (cmdv, ep);
#ifdef DEBUG
fprintf (stderr, "last character is <%c> -- is that a /?\n", cmdv[strlen (cmdv) - 1]);
#endif
if (cmdv[strlen (cmdv) - 1] == '/')
{
strcat (cmdv, "autoexec");
}
else
{
strcat (cmdv, "/autoexec");
}
#ifdef DEBUG
fprintf (stderr, "About to run %s\n", cmdv);
#endif
cmdrun (cmdv, stdout);
/* Now run the .autoexec file */
strcpy (cmdv, ep);
#ifdef DEBUG
fprintf (stderr, "last character is <%c> -- is that a /?\n", cmdv[strlen (cmdv) - 1]);
#endif
if (cmdv[strlen (cmdv) - 1] == '/')
{
strcat (cmdv, ".autoexec");
}
else
{
strcat (cmdv, "/.autoexec");
}
cmdrun (cmdv, stdout);
}
else
{
/* if no HOME variable exits, then run the file in the current directory */
/* Could this somehow be a risk along the lines of .exrc ? */
if (argv[0][0] == '-')
{
cmdrun ("autoexec", stdout);
cmdrun (".autoexec", stdout);
}
}
}
else
{
/* we are not a login shell, nor do we want to be initialized */
/* just check out any environment variables */
introspect ();
}
#ifdef DEBUG
fprintf (stderr, "Got %d arguments\n", argc);
#endif
/* Note : Above initialization independant */
/* of cmdline arguments */
if (argc > 1)
{
ep = argv[1];
if (ep[0] == '-')
{
switch (ep[1])
{
case 'C':
case 'c':
running = 0;
case 'R':
case 'r':
if (argc > 2)
{
j = 0;
for (i = 2; i < argc; i++)
{
if (strlen (argv[i]) < INBUF - j)
{
strcpy (cin + j, argv[i]);
j += strlen (argv[i]);
cin[j] = ' ';
j++;
}
else
{
i = argc;
fputc ('\a', stdout);
}
}
cin[j] = '\0';
#ifdef DEBUG
fprintf (stderr, "Will be running <%s> from the commandline\n", cin);
#endif
lex (cin, 0);
stmts (0, tokencount, tokenstream, stdin, stdout);
}
break;
case 'K':
case 'k':
if (argc > 2)
{
cmdrun (argv[2], stdout);
}
else
{
if (!(argv[0][0] == '-' || (getenv (STRNOUNINIT) != NULL) || getppid () == 1))
{
cmdrun ("/etc/autoexec", stdout);
ep = getenv ("HOME");
if (ep != NULL)
{
strcpy (cmdv, ep);
if (cmdv[strlen (cmdv) - 1] == '/')
{
strcat (cmdv, "autoexec");
}
else
{
strcat (cmdv, "/autoexec");
}
cmdrun (cmdv, stdout);
strcpy (cmdv, ep);
if (cmdv[strlen (cmdv) - 1] == '/')
{
strcat (cmdv, ".autoexec");
}
else
{
strcat (cmdv, "/.autoexec");
}
cmdrun (cmdv, stdout);
}
}
}
break;
case 'H':
case 'h':
case '-':
case '?':
running = 0;
fprintf (stderr, "Usage: lsh [filename] [-c commands] [-h] [-k [filename]] [-r commands]\n");
break;
default:
plerr (PLPFN);
break;
}
}
else
{
#ifdef DEBUG
fprintf (stderr, "Running file <%s>\n", ep);
#endif
cmdrun (ep, stdout);
running = 0;
}
}
while (running)
{
#ifdef DEBUG
fprintf (stderr, "[%d] At top of main loop\n", getpid ());
#endif
if (tokencount)
fprintf (stdout, "\n");
printprompt (drivecur, proz, stdout);
if (timeout)
{
alarm (timeout);
}
if (readl (cin, INBUF))
{
running = 0;
fprintf (stdout, "\n");
}
else
{
if (timeout)
{
alarm (0);
}
lex (cin, 0);
stmts (0, tokencount, tokenstream, stdin, stdout);
}
#ifdef DEBUG
fprintf (stderr, "[%d] At end of main loop... running [%d]\n", getpid (), running);
#endif
}
#ifdef DIAGNOSE
pathdump (stdout);
symdump ();
tokendump ();
#endif
onquit ();
return quitstat;
}
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