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/* quote.c
Quote a UUCP command.
Copyright (C) 2002 Ian Lance Taylor
This file is part of the Taylor UUCP package.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
The author of the program may be contacted at ian@airs.com.
*/
#include "uucp.h"
#if USE_RCS_ID
const char quote_rcsid[] = "$Id: quote.c,v 1.2 2002/03/05 19:10:42 ian Rel $";
#endif
#include "uudefs.h"
/* Local functions. */
__inline__ static boolean fneeds_quotes P((const char *z));
/* Return whether a string needs quotes. We want to be conservative
here--we don't want to reject a string which would work with an
older UUCP version. */
__inline__
static boolean
fneeds_quotes (z)
const char *z;
{
return z != NULL && z[strcspn (z, " \t\n")] != '\0';
}
/* Return whether a command needs quotes. */
boolean
fcmd_needs_quotes (qcmd)
const struct scmd *qcmd;
{
if (fneeds_quotes (qcmd->zfrom)
|| fneeds_quotes (qcmd->zto)
|| fneeds_quotes (qcmd->zuser)
|| fneeds_quotes (qcmd->znotify))
return TRUE;
/* We don't check qcmd->zcmd. It is already permitted to have
spaces, and uux will never generate a command with an embedded
newline. */
return FALSE;
}
/* Quote the strings which appear in a UUCP command string. Add 'q'
to the list of options. This creates a new command in qnew, with
freshly allocated strings. */
void
uquote_cmd (qorig, qnew)
const struct scmd *qorig;
struct scmd *qnew;
{
qnew->bcmd = qorig->bcmd;
qnew->bgrade = qorig->bgrade;
qnew->pseq = qorig->pseq;
qnew->zfrom = zquote_cmd_string (qorig->zfrom, FALSE);
qnew->zto = zquote_cmd_string (qorig->zto, FALSE);
qnew->zuser = zquote_cmd_string (qorig->zuser, FALSE);
if (strchr (qorig->zoptions, 'q') != NULL)
qnew->zoptions = zbufcpy (qorig->zoptions);
else
{
size_t clen;
char *z;
clen = strlen (qorig->zoptions);
z = zbufalc (clen + 2);
memcpy (z, qorig->zoptions, clen);
z[clen] = 'q';
z[clen + 1] = '\0';
qnew->zoptions = z;
}
qnew->ztemp = zbufcpy (qorig->ztemp);
qnew->imode = qorig->imode;
qnew->znotify = zquote_cmd_string (qorig->znotify, FALSE);
qnew->cbytes = qorig->cbytes;
/* The zcmd field is never quoted. */
qnew->zcmd = zbufcpy (qorig->zcmd);
qnew->ipos = qorig->ipos;
}
/* Free a command structure created by uquote_cmd. */
void
ufree_quoted_cmd (qcmd)
struct scmd *qcmd;
{
ubuffree ((char *) qcmd->zfrom);
ubuffree ((char *) qcmd->zto);
ubuffree ((char *) qcmd->zuser);
ubuffree ((char *) qcmd->ztemp);
ubuffree ((char *) qcmd->znotify);
ubuffree ((char *) qcmd->zcmd);
ubuffree ((char *) qcmd->zoptions);
}
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