Example #1
0
/*
 * merge filename [filename ...]
 */
static int 
do_merge(char *inputfilename, int lineno, int argc, char **argv)
{
    int i;
    int errors = 0;
    AuthList *head, *tail, *listhead, *listtail;
    int nentries, nnew, nrepl;
    Bool numeric = False;

    if (argc < 2) {
	prefix (inputfilename, lineno);
	badcommandline (argv[0]);
	return 1;
    }

    if (argv[0][0] == 'n') numeric = True;
    listhead = listtail = NULL;

    for (i = 1; i < argc; i++) {
	char *filename = argv[i];
	FILE *fp;
	Bool used_stdin = False;

	fp = open_file (&filename,
			numeric ? "r" : "rb",
			&used_stdin, inputfilename, lineno,
			argv[0]);
	if (!fp) {
	    errors++;
	    continue;
	}

	head = tail = NULL;
	nentries = read_auth_entries (fp, numeric, &head, &tail);
	if (nentries == 0) {
	    prefix (inputfilename, lineno);
	    fprintf (stderr, "unable to read any entries from file \"%s\"\n",
		     filename);
	    errors++;
	} else {			/* link it in */
	    add_to_list (listhead, listtail, head);
 	}

	if (!used_stdin) (void) fclose (fp);
    }

    /*
     * if we have new entries, merge them in (freeing any duplicates)
     */
    if (listhead) {
	nentries = merge_entries (&xauth_head, listhead, &nnew, &nrepl);
	if (verbose) 
	  printf ("%d entries read in:  %d new, %d replacement%s\n", 
	  	  nentries, nnew, nrepl, nrepl != 1 ? "s" : "");
	if (nentries > 0) xauth_modified = True;
    }

    return 0;
}
Example #2
0
Tt_status _Tt_auth::
read_auth_file(char *filename)
{
    static const char		*funcname = "Tt_auth::read_auth_file()";
    FILE		*authfp;
    Tt_status		 status = TT_OK;

    if (0 == (authfp = fopen (filename, "rb"))) {
	_tt_syslog(0, LOG_ERR,
                   "%s:  unable to read auth entries from file \"%s\"\n",
                   funcname, filename);
        return TT_AUTHFILE_ACCESS;
    }

    status = read_auth_entries(authfp, &_entries_head);
    if (TT_OK != status)
      _tt_syslog(0, LOG_ERR,
                 "%s:  unable to read auth entries from file \"%s\"\n",
                 funcname, filename);

    (void) fclose (authfp);
    return status;
}
Example #3
0
int 
auth_initialize(char *authfilename)
{
    int n;
    AuthList *head, *tail;
    FILE *authfp;
    Bool exists;

    xauth_filename = authfilename;    /* used in cleanup, prevent race with 
                                         signals */
    register_signals ();

    bzero ((char *) hexvalues, sizeof hexvalues);
    hexvalues['0'] = 0;
    hexvalues['1'] = 1;
    hexvalues['2'] = 2;
    hexvalues['3'] = 3;
    hexvalues['4'] = 4;
    hexvalues['5'] = 5;
    hexvalues['6'] = 6;
    hexvalues['7'] = 7;
    hexvalues['8'] = 8;
    hexvalues['9'] = 9;
    hexvalues['a'] = hexvalues['A'] = 0xa;
    hexvalues['b'] = hexvalues['B'] = 0xb;
    hexvalues['c'] = hexvalues['C'] = 0xc;
    hexvalues['d'] = hexvalues['D'] = 0xd;
    hexvalues['e'] = hexvalues['E'] = 0xe;
    hexvalues['f'] = hexvalues['F'] = 0xf;

    if (break_locks && verbose) {
	printf ("Attempting to break locks on authority file %s\n",
		authfilename);
    }

    if (ignore_locks) {
	if (break_locks) XauUnlockAuth (authfilename);
    } else {
	n = XauLockAuth (authfilename, XAUTH_DEFAULT_RETRIES,
			 XAUTH_DEFAULT_TIMEOUT, 
			 (break_locks ? 0L : XAUTH_DEFAULT_DEADTIME));
	if (n != LOCK_SUCCESS) {
	    char *reason = "unknown error";
	    switch (n) {
	      case LOCK_ERROR:
		reason = "error";
		break;
	      case LOCK_TIMEOUT:
		reason = "timeout";
		break;
	    }
	    fprintf (stderr, "%s:  %s in locking authority file %s\n",
		     ProgramName, reason, authfilename);
	    return -1;
	} else
	    xauth_locked = True;
    }

    /* these checks can only be done reliably after the file is locked */
    exists = (access (authfilename, F_OK) == 0);
    if (exists && access (authfilename, W_OK) != 0) {
	fprintf (stderr,
	 "%s:  %s not writable, changes will be ignored\n",
		 ProgramName, authfilename);
	xauth_allowed = False;
    }

    original_umask = umask (0077);	/* disallow non-owner access */

    authfp = fopen (authfilename, "rb");
    if (!authfp) {
	int olderrno = errno;

					/* if file there then error */
	if (access (authfilename, F_OK) == 0) {	 /* then file does exist! */
	    errno = olderrno;
	    return -1;
	}				/* else ignore it */
	fprintf (stderr, 
		 "%s:  creating new authority file %s\n",
		 ProgramName, authfilename);
    } else {
	xauth_existed = True;
	n = read_auth_entries (authfp, False, &head, &tail);
	(void) fclose (authfp);
	if (n < 0) {
	    fprintf (stderr,
		     "%s:  unable to read auth entries from file \"%s\"\n",
		     ProgramName, authfilename);
	    return -1;
	}
	xauth_head = head;
    }

    n = strlen (authfilename);
    xauth_filename = malloc (n + 1);
    if (xauth_filename) strcpy (xauth_filename, authfilename);
    else {
	fprintf(stderr,"cannot allocate memory\n");
	return -1;
    }
    
    xauth_modified = False;

    if (verbose) {
	printf ("%s authority file %s\n", 
		ignore_locks ? "Ignoring locks on" : "Using", authfilename);
    }
    return 0;
}