about summary refs log tree commit diff
path: root/Src/hashnameddir.c
blob: bab7b64b2d7706e871205da70443d0204462b714 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
/*
 * hashtable.c - hash tables
 *
 * This file is part of zsh, the Z shell.
 *
 * Copyright (c) 1992-1997 Paul Falstad
 * All rights reserved.
 *
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and to distribute modified versions of this software for any
 * purpose, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 *
 * In no event shall Paul Falstad or the Zsh Development Group be liable
 * to any party for direct, indirect, special, incidental, or consequential
 * damages arising out of the use of this software and its documentation,
 * even if Paul Falstad and the Zsh Development Group have been advised of
 * the possibility of such damage.
 *
 * Paul Falstad and the Zsh Development Group specifically disclaim any
 * warranties, including, but not limited to, the implied warranties of
 * merchantability and fitness for a particular purpose.  The software
 * provided hereunder is on an "as is" basis, and Paul Falstad and the
 * Zsh Development Group have no obligation to provide maintenance,
 * support, updates, enhancements, or modifications.
 *
 */

#include "../config.h"

/*
 * On Solaris 8 there's a clash between "bool" in curses and RPC.
 * We don't need curses here, so ensure it doesn't get included.
 */
#define ZSH_NO_TERM_HANDLING

#include "zsh.mdh"
#include "hashnameddir.pro"

/****************************************/
/* Named Directory Hash Table Functions */
/****************************************/

/* hash table containing named directories */

/**/
mod_export HashTable nameddirtab;

/* != 0 if all the usernames have already been *
 * added to the named directory hash table.    */

static int allusersadded;

/* Create new hash table for named directories */

/**/
void
createnameddirtable(void)
{
    nameddirtab = newhashtable(201, "nameddirtab", NULL);

    nameddirtab->hash        = hasher;
    nameddirtab->emptytable  = emptynameddirtable;
    nameddirtab->filltable   = fillnameddirtable;
    nameddirtab->cmpnodes    = strcmp;
    nameddirtab->addnode     = addnameddirnode;
    nameddirtab->getnode     = gethashnode;
    nameddirtab->getnode2    = gethashnode2;
    nameddirtab->removenode  = removenameddirnode;
    nameddirtab->disablenode = NULL;
    nameddirtab->enablenode  = NULL;
    nameddirtab->freenode    = freenameddirnode;
    nameddirtab->printnode   = printnameddirnode;

    allusersadded = 0;
    finddir(NULL);		/* clear the finddir cache */
}

/* Empty the named directories table */

/**/
static void
emptynameddirtable(HashTable ht)
{
    emptyhashtable(ht);
    allusersadded = 0;
    finddir(NULL);		/* clear the finddir cache */
}

/* Add all the usernames in the password file/database *
 * to the named directories table.                     */

/**/
static void
fillnameddirtable(UNUSED(HashTable ht))
{
    if (!allusersadded) {
#ifdef USE_GETPWENT
	struct passwd *pw;

	setpwent();

	/* loop through the password file/database *
	 * and add all entries returned.           */
	while ((pw = getpwent()) && !errflag)
	    adduserdir(pw->pw_name, pw->pw_dir, ND_USERNAME, 1);

	endpwent();
#endif /* USE_GETPWENT */
	allusersadded = 1;
    }
}

/* Add an entry to the named directory hash *
 * table, clearing the finddir() cache and  *
 * initialising the `diff' member.          */

/**/
static void
addnameddirnode(HashTable ht, char *nam, void *nodeptr)
{
    Nameddir nd = (Nameddir) nodeptr;

    nd->diff = strlen(nd->dir) - strlen(nam);
    finddir(NULL);		/* clear the finddir cache */
    addhashnode(ht, nam, nodeptr);
}

/* Remove an entry from the named directory  *
 * hash table, clearing the finddir() cache. */

/**/
static HashNode
removenameddirnode(HashTable ht, const char *nam)
{
    HashNode hn = removehashnode(ht, nam);

    if(hn)
	finddir(NULL);		/* clear the finddir cache */
    return hn;
}

/* Free up the memory used by a named directory hash node. */

/**/
static void
freenameddirnode(HashNode hn)
{
    Nameddir nd = (Nameddir) hn;

    zsfree(nd->node.nam);
    zsfree(nd->dir);
    zfree(nd, sizeof(struct nameddir));
}

/* Print a named directory */

/**/
static void
printnameddirnode(HashNode hn, int printflags)
{
    Nameddir nd = (Nameddir) hn;

    if (printflags & PRINT_NAMEONLY) {
	zputs(nd->node.nam, stdout);
	putchar('\n');
	return;
    }

    if (printflags & PRINT_LIST) {
      printf("hash -d ");

      if(nd->node.nam[0] == '-')
	    printf("-- ");
    }

    quotedzputs(nd->node.nam, stdout);
    putchar('=');
    quotedzputs(nd->dir, stdout);
    putchar('\n');
}

#include "../config.h"