3 * $Id: passphrase.c,v 1.6 2004/04/08 01:36:15 mdw Exp $
5 * Reading of passphrases (Unix-specific)
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 /*----- Header files ------------------------------------------------------*/
39 #include <mLib/dstr.h>
41 #include "passphrase.h"
44 /*----- Static variables --------------------------------------------------*/
47 static unsigned flags
= 0;
51 /*----- Main code ---------------------------------------------------------*/
57 * Returns: Zero if OK, nonzero if it failed
59 * Use: Attempts to connect to the passphrase pixie.
62 static int pconn(void)
68 if ((fd
= pixie_open(0)) < 0) {
75 /* --- @passphrase_read@ --- *
77 * Arguments: @const char *tag@ = pointer to passphrase tag string
78 * @unsigned mode@ = reading mode
79 * @char *buf@ = pointer to destination buffer
80 * @size_t sz@ = size of destination buffer
82 * Returns: Zero if successful, nonzero on failure.
84 * Use: Reads a passphrase from the user, using some system-specific
85 * secure mechanism. The mechanism may keep a cache of
86 * passphrases, so the user may not necessarily be prompted.
89 int passphrase_read(const char *tag
, unsigned mode
, char *buf
, size_t sz
)
94 /* --- Try talking to the pixie --- */
97 rc
= pixie_read(fd
, tag
, mode
, buf
, sz
);
107 /* --- Read from the terminal --- */
109 dstr_putf(&d
, "%s %s: ",
110 mode
== PMODE_READ ?
"Passphrase" : "New passphrase",
112 if (pixie_getpass(d
.buf
, buf
, sz
))
114 if (mode
== PMODE_VERIFY
) {
117 dstr_putf(&d
, "Verify passphrase %s: ", tag
);
118 if (pixie_getpass(d
.buf
, b
, sizeof(b
)) || strcmp(b
, buf
) != 0) {
119 memset(b
, 0, sizeof(b
));
125 /* --- If the pixie is interested, tell it the new passphrase --- */
128 pixie_set(fd
, tag
, buf
);
131 /* --- Tidy up after a failure --- */
139 /* --- @passphrase_cancel@ --- *
141 * Arguments: @const char *tag@ = pointer to passphrase tag string
145 * Use: Attempts to make the passphrase cache forget about a
146 * particular passphrase. This may be useful if the passphrase
147 * turns out to be wrong, or if the user is attempting to change
151 void passphrase_cancel(const char *tag
)
154 pixie_cancel(fd
, tag
);
157 /*----- That's all, folks -------------------------------------------------*/