summaryrefslogtreecommitdiff
path: root/tildexpand.c
diff options
context:
space:
mode:
Diffstat (limited to 'tildexpand.c')
-rw-r--r--tildexpand.c73
1 files changed, 0 insertions, 73 deletions
diff --git a/tildexpand.c b/tildexpand.c
deleted file mode 100644
index cedb653b2..000000000
--- a/tildexpand.c
+++ /dev/null
@@ -1,73 +0,0 @@
1/*
2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 * All rights reserved
5 *
6 * As far as I am concerned, the code I have written for this software
7 * can be used freely for any purpose. Any derived versions of this
8 * software must be clearly marked as such, and if the derived work is
9 * incompatible with the protocol description in the RFC file, it must be
10 * called by a name other than "ssh" or "Secure Shell".
11 */
12
13#include "includes.h"
14RCSID("$OpenBSD: tildexpand.c,v 1.15 2004/05/21 08:43:03 markus Exp $");
15
16#include "xmalloc.h"
17#include "log.h"
18#include "misc.h"
19
20/*
21 * Expands tildes in the file name. Returns data allocated by xmalloc.
22 * Warning: this calls getpw*.
23 */
24char *
25tilde_expand_filename(const char *filename, uid_t my_uid)
26{
27 const char *cp;
28 u_int userlen;
29 char *expanded;
30 struct passwd *pw;
31 char user[100];
32 int len;
33
34 /* Return immediately if no tilde. */
35 if (filename[0] != '~')
36 return xstrdup(filename);
37
38 /* Skip the tilde. */
39 filename++;
40
41 /* Find where the username ends. */
42 cp = strchr(filename, '/');
43 if (cp)
44 userlen = cp - filename; /* Something after username. */
45 else
46 userlen = strlen(filename); /* Nothing after username. */
47 if (userlen == 0)
48 pw = getpwuid(my_uid); /* Own home directory. */
49 else {
50 /* Tilde refers to someone elses home directory. */
51 if (userlen > sizeof(user) - 1)
52 fatal("User name after tilde too long.");
53 memcpy(user, filename, userlen);
54 user[userlen] = 0;
55 pw = getpwnam(user);
56 }
57 if (!pw)
58 fatal("Unknown user %100s.", user);
59
60 /* If referring to someones home directory, return it now. */
61 if (!cp) {
62 /* Only home directory specified */
63 return xstrdup(pw->pw_dir);
64 }
65 /* Build a path combining the specified directory and path. */
66 len = strlen(pw->pw_dir) + strlen(cp + 1) + 2;
67 if (len > MAXPATHLEN)
68 fatal("Home directory too long (%d > %d", len-1, MAXPATHLEN-1);
69 expanded = xmalloc(len);
70 snprintf(expanded, len, "%s%s%s", pw->pw_dir,
71 strcmp(pw->pw_dir, "/") ? "/" : "", cp + 1);
72 return expanded;
73}