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 ---------------------------------------------------------*/
53 /* --- @passphrase_connect@ ---
55 * Arguments: @const char *sock@ = socket name to connect to, or null for
58 * Returns: Zero if OK, nonzero if it failed
60 * Use: Attempts to connect to the passphrase pixie.
63 int passphrase_connect(const char *sock)
67 if ((fd = pixie_open(sock)) < 0) {
75 static int pconn(void)
81 return (passphrase_connect(0));
84 /* --- @passphrase_read@ --- *
86 * Arguments: @const char *tag@ = pointer to passphrase tag string
87 * @unsigned mode@ = reading mode
88 * @char *buf@ = pointer to destination buffer
89 * @size_t sz@ = size of destination buffer
91 * Returns: Zero if successful, nonzero on failure.
93 * Use: Reads a passphrase from the user, using some system-specific
94 * secure mechanism. The mechanism may keep a cache of
95 * passphrases, so the user may not necessarily be prompted.
98 int passphrase_read(const char *tag, unsigned mode, char *buf, size_t sz)
103 /* --- Try talking to the pixie --- */
106 rc = pixie_read(fd, tag, mode, buf, sz);
116 /* --- Read from the terminal --- */
118 dstr_putf(&d, "%s %s: ",
119 mode == PMODE_READ ? "Passphrase" : "New passphrase",
121 if (pixie_getpass(d.buf, buf, sz))
123 if (mode == PMODE_VERIFY) {
126 dstr_putf(&d, "Verify passphrase %s: ", tag);
127 if (pixie_getpass(d.buf, b, sizeof(b)) || strcmp(b, buf) != 0) {
128 memset(b, 0, sizeof(b));
134 /* --- If the pixie is interested, tell it the new passphrase --- */
137 pixie_set(fd, tag, buf);
140 /* --- Tidy up after a failure --- */
148 /* --- @passphrase_cancel@ --- *
150 * Arguments: @const char *tag@ = pointer to passphrase tag string
154 * Use: Attempts to make the passphrase cache forget about a
155 * particular passphrase. This may be useful if the passphrase
156 * turns out to be wrong, or if the user is attempting to change
160 void passphrase_cancel(const char *tag)
163 pixie_cancel(fd, tag);
166 /*----- That's all, folks -------------------------------------------------*/