3 * $Id: key-attr.c,v 1.2 2000/02/12 18:21:02 mdw Exp $
5 * Key attribute manipulation
7 * (c) 1999 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Catacomb.
14 * Catacomb is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
19 * Catacomb is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
24 * You should have received a copy of the GNU Library General Public
25 * License along with Catacomb; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
30 /*----- Revision history --------------------------------------------------*
32 * $Log: key-attr.c,v $
33 * Revision 1.2 2000/02/12 18:21:02 mdw
34 * Overhaul of key management (again).
36 * Revision 1.1 1999/12/22 15:47:48 mdw
37 * Major key-management revision.
41 /*----- Header files ------------------------------------------------------*/
49 #include <mLib/dstr.h>
54 /*----- Main code ---------------------------------------------------------*/
56 /* --- @key_chkident@ --- *
58 * Arguments: @const char *p@ = pointer to a type string
60 * Returns: Zero if OK, -1 on error.
62 * Use: Checks whether an identification component string is OK.
65 int key_chkident(const char *p
)
70 if (*p
== ':' || *p
== '.' || isspace((unsigned char)*p
))
77 /* --- @key_chkcomment@ --- *
79 * Arguments: @const char *p@ = pointer to a comment string
81 * Returns: Zero if OK, -1 on error.
83 * Use: Checks whether a comment string is OK.
86 int key_chkcomment(const char *p
)
100 /* --- @key_mkattriter@ --- *
102 * Arguments: @key_attriter *i@ = pointer to attribute iterator
103 * @key *k@ = pointer to key
107 * Use: Initializes an attribute iterator. The attributes are
108 * returned by @key_nextattr@.
111 void key_mkattriter(key_attriter
*i
, key
*k
)
113 sym_mkiter(&i
->i
, &k
->a
);
116 /* --- @key_nextattr@ --- *
118 * Arguments: @key_attriter *i@ = pointer to attribute iterator
119 * @const char **n, **v@ = pointers to name and value
121 * Returns: Zero if no attribute available, or nonzero if returned OK.
123 * Use: Returns the next attribute.
126 int key_nextattr(key_attriter
*i
, const char **n
, const char **v
)
128 key_attr
*a
= sym_next(&i
->i
);
136 /* --- @key_getattr@ --- *
138 * Arguments: @key_file *f@ = pointer to file
139 * @key *k@ = pointer to key
140 * @const char *n@ = pointer to attribute name
142 * Returns: Pointer to attribute value, or null if not found.
144 * Use: Returns the value of a key attribute.
147 const char *key_getattr(key_file
*f
, key
*k
, const char *n
)
150 if ((a
= sym_find(&k
->a
, n
, -1, 0, 0)) == 0)
155 /* --- @key_putattr@ --- *
157 * Arguments: @key_file *f@ = pointer to file
158 * @key *k@ = pointer to key
159 * @const char *n@ = pointer to attribute name
160 * @const char *v@ = pointer to attribute value or null
162 * Returns: Error code (one of the @KERR@ constants).
164 * Use: Inserts an attribute on a key. If an attribute with the same
165 * name already exists, it is deleted. Setting a null value
166 * removes the attribute.
169 int key_putattr(key_file
*f
, key
*k
, const char *n
, const char *v
)
174 if (!(f
->f
& KF_WRITE
))
175 return (KERR_READONLY
);
178 a
= sym_find(&k
->a
, n
, -1, sizeof(*a
), &found
);
182 } else if ((a
= sym_find(&k
->a
, n
, -1, 0, 0)) != 0) {
184 sym_remove(&k
->a
, a
);
191 /* --- @key_setcomment@ --- *
193 * Arguments: @key_file *f@ = pointer to key file block
194 * @key *k@ = pointer to key block
195 * @const char *c@ = pointer to comment to set, or zero
197 * Returns: Error code (one of the @KERR@ constants).
199 * Use: Replaces the key's current comment with a new one.
202 int key_setcomment(key_file
*f
, key
*k
, const char *c
)
204 if (!(f
->f
& KF_WRITE
))
205 return (KERR_READONLY
);
206 if (key_chkcomment(c
))
207 return (KERR_BADCOMMENT
);
218 /* --- @key_settag@ --- *
220 * Arguments: @key_file *f@ = pointer to key file block
221 * @key *k@ = pointer to key block
222 * @const char *tag@ = pointer to comment to set, or zero
224 * Returns: Error code (one of the @KERR@ constants).
226 * Use: Replaces the key's current tag with a new one.
229 int key_settag(key_file
*f
, key
*k
, const char *tag
)
234 if (!(f
->f
& KF_WRITE
))
235 return (KERR_READONLY
);
237 /* --- Make sure the tag is OK --- */
239 if (tag
&& key_chkident(tag
))
240 return (KERR_BADTAG
);
242 /* --- See if the new tag is the same as the old one --- */
244 if ((!tag
&& !k
->tag
) ||
245 (tag
&& k
->tag
&& strcmp(tag
, k
->tag
) == 0))
248 /* --- Allocate an entry for the new tag --- */
251 kr
= sym_find(&f
->bytag
, tag
, -1, sizeof(*kr
), &found
);
253 return (KERR_DUPTAG
);
257 /* --- Remove any existing tag --- */
260 kr
= sym_find(&f
->bytag
, k
->tag
, -1, 0, 0);
261 assert(((void)"No bytag link", kr
));
262 sym_remove(&f
->bytag
, kr
);
270 k
->tag
= xstrdup(tag
);
276 /* --- @key_fulltag@ --- *
278 * Arguments: @key *k@ = pointer to key
279 * @dstr *d@ = pointer to destination string
283 * Use: Emits the key's full tag, which has the form
284 * `ID:TYPE[:TAG]'. This is used in the textual file format,
285 * and to identify passphrases for locked keys.
288 void key_fulltag(key
*k
, dstr
*d
)
290 dstr_putf(d
, "%08lx:%s", (unsigned long)k
->id
, k
->type
);
292 dstr_putf(d
, ":%s", k
->tag
);
295 /*----- That's all, folks -------------------------------------------------*/