+++ /dev/null
-/* -*-c-*-
- *
- * $Id$
- *
- * Key attribute manipulation
- *
- * (c) 1999 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of Catacomb.
- *
- * Catacomb is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * Catacomb 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 Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with Catacomb; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-
-#include <mLib/dstr.h>
-#include <mLib/sym.h>
-
-#include "key.h"
-
-/*----- Main code ---------------------------------------------------------*/
-
-/* --- @key_chkident@ --- *
- *
- * Arguments: @const char *p@ = pointer to a type string
- *
- * Returns: Zero if OK, -1 on error.
- *
- * Use: Checks whether an identification component string is OK.
- */
-
-int key_chkident(const char *p)
-{
- if (!p || !*p || strlen(p) > 255)
- return (-1);
- while (*p) {
- if (*p == ':' || *p == '.' || isspace((unsigned char)*p))
- return (-1);
- p++;
- }
- return (0);
-}
-
-/* --- @key_chkcomment@ --- *
- *
- * Arguments: @const char *p@ = pointer to a comment string
- *
- * Returns: Zero if OK, -1 on error.
- *
- * Use: Checks whether a comment string is OK.
- */
-
-int key_chkcomment(const char *p)
-{
- if (!p)
- return (0);
- if (!*p)
- return (-1);
- while (*p) {
- if (*p == '\n')
- return (-1);
- p++;
- }
- return (0);
-}
-
-/* --- @key_mkattriter@ --- *
- *
- * Arguments: @key_attriter *i@ = pointer to attribute iterator
- * @key *k@ = pointer to key
- *
- * Returns: ---
- *
- * Use: Initializes an attribute iterator. The attributes are
- * returned by @key_nextattr@.
- */
-
-void key_mkattriter(key_attriter *i, key *k)
-{
- sym_mkiter(&i->i, &k->a);
-}
-
-/* --- @key_nextattr@ --- *
- *
- * Arguments: @key_attriter *i@ = pointer to attribute iterator
- * @const char **n, **v@ = pointers to name and value
- *
- * Returns: Zero if no attribute available, or nonzero if returned OK.
- *
- * Use: Returns the next attribute.
- */
-
-int key_nextattr(key_attriter *i, const char **n, const char **v)
-{
- key_attr *a = sym_next(&i->i);
- if (!a)
- return (0);
- if (n) *n = SYM_NAME(a);
- if (v) *v = a->p;
- return (1);
-}
-
-/* --- @key_getattr@ --- *
- *
- * Arguments: @key_file *f@ = pointer to file
- * @key *k@ = pointer to key
- * @const char *n@ = pointer to attribute name
- *
- * Returns: Pointer to attribute value, or null if not found.
- *
- * Use: Returns the value of a key attribute.
- */
-
-const char *key_getattr(key_file *f, key *k, const char *n)
-{
- key_attr *a;
- if ((a = sym_find(&k->a, n, -1, 0, 0)) == 0)
- return (0);
- return (a->p);
-}
-
-/* --- @key_putattr@ --- *
- *
- * Arguments: @key_file *f@ = pointer to file
- * @key *k@ = pointer to key
- * @const char *n@ = pointer to attribute name
- * @const char *v@ = pointer to attribute value or null
- *
- * Returns: Error code (one of the @KERR@ constants).
- *
- * Use: Inserts an attribute on a key. If an attribute with the same
- * name already exists, it is deleted. Setting a null value
- * removes the attribute.
- */
-
-int key_putattr(key_file *f, key *k, const char *n, const char *v)
-{
- key_attr *a;
- unsigned found;
-
- if (!(f->f & KF_WRITE))
- return (KERR_READONLY);
- if (strlen(n) > 255)
- return (KERR_BADATTR);
-
- if (v) {
- a = sym_find(&k->a, n, -1, sizeof(*a), &found);
- if (found)
- xfree(a->p);
- a->p = xstrdup(v);
- } else if ((a = sym_find(&k->a, n, -1, 0, 0)) != 0) {
- xfree(a->p);
- sym_remove(&k->a, a);
- }
-
- f->f |= KF_MODIFIED;
- return (0);
-}
-
-/* --- @key_setkeydata@ --- *
- *
- * Arguments: @key_file *kf@ = pointer to key file
- * @key *k@ = pointer to key
- * @key_data *kd@ = new key data
- *
- * Returns: Zero on success, or a @KERR_@ error code on failure.
- *
- * Use: Sets the key data for a key.
- */
-
-int key_setkeydata(key_file *kf, key *k, key_data *kd)
-{
- if (!(kf->f & KF_WRITE))
- return (KERR_READONLY);
- key_incref(kd);
- key_drop(k->k);
- k->k = kd;
- kf->f |= KF_MODIFIED;
- return (0);
-}
-
-/* --- @key_setcomment@ --- *
- *
- * Arguments: @key_file *f@ = pointer to key file block
- * @key *k@ = pointer to key block
- * @const char *c@ = pointer to comment to set, or zero
- *
- * Returns: Error code (one of the @KERR@ constants).
- *
- * Use: Replaces the key's current comment with a new one.
- */
-
-int key_setcomment(key_file *f, key *k, const char *c)
-{
- if (!(f->f & KF_WRITE))
- return (KERR_READONLY);
- if (key_chkcomment(c))
- return (KERR_BADCOMMENT);
- if (k->c)
- xfree(k->c);
- if (c)
- k->c = xstrdup(c);
- else
- k->c = 0;
- f->f |= KF_MODIFIED;
- return (0);
-}
-
-/* --- @key_settag@ --- *
- *
- * Arguments: @key_file *f@ = pointer to key file block
- * @key *k@ = pointer to key block
- * @const char *tag@ = pointer to comment to set, or zero
- *
- * Returns: Error code (one of the @KERR@ constants).
- *
- * Use: Replaces the key's current tag with a new one.
- */
-
-int key_settag(key_file *f, key *k, const char *tag)
-{
- key_ref *kr;
- unsigned found;
-
- if (!(f->f & KF_WRITE))
- return (KERR_READONLY);
-
- /* --- Make sure the tag is OK --- */
-
- if (tag && key_chkident(tag))
- return (KERR_BADTAG);
-
- /* --- See if the new tag is the same as the old one --- */
-
- if ((!tag && !k->tag) ||
- (tag && k->tag && strcmp(tag, k->tag) == 0))
- return (0);
-
- /* --- Allocate an entry for the new tag --- */
-
- if (tag) {
- kr = sym_find(&f->bytag, tag, -1, sizeof(*kr), &found);
- if (found && !KEY_EXPIRED(time(0), kr->k->del))
- return (KERR_DUPTAG);
- kr->k = k;
- }
-
- /* --- Remove any existing tag --- */
-
- if (k->tag) {
- kr = sym_find(&f->bytag, k->tag, -1, 0, 0);
- assert(((void)"No bytag link", kr));
- sym_remove(&f->bytag, kr);
- xfree(k->tag);
- }
-
- /* --- Done --- */
-
- f->f |= KF_MODIFIED;
- if (tag)
- k->tag = xstrdup(tag);
- else
- k->tag = 0;
- return (0);
-}
-
-/* --- @key_fulltag@ --- *
- *
- * Arguments: @key *k@ = pointer to key
- * @dstr *d@ = pointer to destination string
- *
- * Returns: ---
- *
- * Use: Emits the key's full tag, which has the form
- * `ID:TYPE[:TAG]'. This is used in the textual file format,
- * and to identify passphrases for locked keys.
- */
-
-void key_fulltag(key *k, dstr *d)
-{
- dstr_putf(d, "%08lx:%s", (unsigned long)k->id, k->type);
- if (k->tag)
- dstr_putf(d, ":%s", k->tag);
-}
-
-/*----- That's all, folks -------------------------------------------------*/
projects / u / mdw / catacomb / blobdiff