3 * $Id: pixie-common.c,v 1.1 1999/12/22 15:58:41 mdw Exp $
5 * Common code for Pixie client and server (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 /*----- Revision history --------------------------------------------------*
32 * $Log: pixie-common.c,v $
33 * Revision 1.1 1999/12/22 15:58:41 mdw
34 * Passphrase pixie support.
38 /*----- Header files ------------------------------------------------------*/
46 #include <sys/types.h>
52 #include <sys/socket.h>
55 #include <mLib/alloc.h>
56 #include <mLib/dstr.h>
60 /*----- Main code ---------------------------------------------------------*/
62 /* --- @pixie_address@ --- *
64 * Arguments: @const char *sock@ = pointer to socket name
65 * @size_t *psz@ = where to write the address size
67 * Returns: Pointer to filled-in Unix-domain socket address.
69 * Use: Returns a Unix-domain socket address to use to find the
73 struct sockaddr_un
*pixie_address(const char *sock
, size_t *psz
)
77 /* --- Get the default socket path if none specified --- */
80 sock
= getenv("CATACOMB_PIXIE_SOCKET");
82 sock
= "%h/.catacomb/pixie";
84 /* --- Substitute interesting sequences in the path --- */
102 qq
= getenv("LOGNAME");
104 struct passwd
*pw
= getpwuid(getuid());
115 struct passwd
*pw
= getpwuid(getuid());
133 /* --- Allocate and initialize the socket address --- */
136 struct sockaddr_un
*sun
;
137 size_t bsz
= offsetof(struct sockaddr_un
, sun_path
);
138 *psz
= bsz
+ d
.len
+ 1;
139 sun
= xmalloc(bsz
+ d
.len
+ 1);
141 sun
->sun_family
= AF_UNIX
;
142 memcpy(sun
->sun_path
, d
.buf
, d
.len
+ 1);
148 /* --- @pixie_fdline@ --- *
150 * Arguments: @int fd@ = file descriptor to read from
151 * @char *buf@ = pointer to buffer
152 * @size_t sz@ = size of buffer
156 * Use: Reads a line from a file descriptor. The read is done one
157 * character at a time. If the entire line won't fit, the end
158 * is truncated. The line is null terminated.
161 void pixie_fdline(int fd
, char *buf
, size_t sz
)
164 char *q
= p
+ sz
- 1;
168 if (read(fd
, &c
, 1) < 1)
178 /* --- @pixie_getpass@ --- *
180 * Arguments: @const char *prompt@ = pointer to prompt string
181 * @char *buf@ = pointer to buffer
182 * @size_t sz@ = size of buffer
184 * Returns: Zero if it worked OK, nonzero otherwise.
186 * Use: Reads a passphrase from the terminal or some other requested
190 int pixie_getpass(const char *prompt
, char *buf
, size_t sz
)
192 const char *pfd
= getenv("CATACOMB_PASSPHRASE_FD");
195 /* --- See whether a terminal is what's wanted --- */
199 pixie_fdline(fd
, buf
, sz
);
205 if ((fd
= open("/dev/tty", O_RDWR
)) < 0)
207 if (tcgetattr(fd
, &ta
) < 0)
210 ta
.c_lflag
&= ~(ECHO
| ISIG
);
211 if (tcsetattr(fd
, TCSAFLUSH
, &ta
))
213 write(fd
, prompt
, strlen(prompt
));
214 pixie_fdline(fd
, buf
, sz
);
215 tcsetattr(fd
, TCSAFLUSH
, &ota
);
221 /* --- Tidy up if things went wrong --- */
230 /*----- That's all, folks -------------------------------------------------*/