chiark / gitweb /
add "users" command
[disorder] / lib / rights.c
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5df73aeb
RK
1/*
2 * This file is part of DisOrder
3 * Copyright (C) 2007 Richard Kettlewell
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18 * USA
19 */
20/** @file lib/rights.c
21 * @brief User rights
22 */
23
24#include <config.h>
25#include "types.h"
26
27#include <string.h>
28
29#include "mem.h"
30#include "log.h"
31#include "configuration.h"
32#include "rights.h"
33#include "vector.h"
34
35static const struct {
36 rights_type bit;
37 const char *name;
38} rights_names[] = {
39 { RIGHT_READ, "read" },
40 { RIGHT_PLAY, "play" },
41 { RIGHT_MOVE_ANY, "move any" },
42 { RIGHT_MOVE_MINE, "move mine" },
43 { RIGHT_MOVE_RANDOM, "move random" },
44 { RIGHT_REMOVE_ANY, "remove any" },
45 { RIGHT_REMOVE_MINE, "remove mine" },
46 { RIGHT_REMOVE_RANDOM, "remove random" },
47 { RIGHT_SCRATCH_ANY, "scratch any" },
48 { RIGHT_SCRATCH_MINE, "scratch mine" },
49 { RIGHT_SCRATCH_RANDOM, "scratch random" },
50 { RIGHT_VOLUME, "volume" },
51 { RIGHT_ADMIN, "admin" },
52 { RIGHT_RESCAN, "rescan" },
53 { RIGHT_REGISTER, "register" },
54 { RIGHT_USERINFO, "userinfo" },
55 { RIGHT_PREFS, "prefs" },
56 { RIGHT_GLOBAL_PREFS, "global prefs" }
57};
58#define NRIGHTS (sizeof rights_names / sizeof *rights_names)
59
60/** @brief Convert a rights word to a string */
61char *rights_string(rights_type r) {
62 struct dynstr d[1];
63 size_t n;
64
65 dynstr_init(d);
66 for(n = 0; n < NRIGHTS; ++n) {
67 if(r & rights_names[n].bit) {
68 if(d->nvec)
69 dynstr_append(d, ',');
70 dynstr_append_string(d, rights_names[n].name);
71 }
72 }
73 dynstr_terminate(d);
74 return d->vec;
75}
76
77/** @brief Compute default rights for a new user
78 * @return Default rights value
79 */
80rights_type default_rights(void) {
81 /* TODO get rights from config */
82 rights_type r = RIGHTS__MASK & ~(RIGHT_ADMIN|RIGHT_REGISTER
83 |RIGHT_MOVE__MASK
84 |RIGHT_SCRATCH__MASK
85 |RIGHT_REMOVE__MASK);
86 if(config->restrictions & RESTRICT_SCRATCH)
87 r |= RIGHT_SCRATCH_MINE|RIGHT_SCRATCH_RANDOM;
88 else
89 r |= RIGHT_SCRATCH_ANY;
90 if(!(config->restrictions & RESTRICT_MOVE))
91 r |= RIGHT_MOVE_ANY;
92 if(config->restrictions & RESTRICT_REMOVE)
93 r |= RIGHT_REMOVE_MINE;
94 else
95 r |= RIGHT_REMOVE_ANY;
96 return r;
97}
98
99/** @brief Parse a rights list
100 * @param s Rights list in string form
101 * @param rp Where to store rights, or NULL to just validate
102 * @return 0 on success, non-0 if @p s is not valid
103 */
104int parse_rights(const char *s, rights_type *rp) {
105 rights_type r = 0;
106 const char *t;
107 size_t n, l;
108
109 if(!*s) {
110 /* You can't have no rights */
111 error(0, "empty rights string");
112 return -1;
113 }
114 while(*s) {
115 t = strchr(s, ',');
116 if(!t)
117 t = s + strlen(s);
118 l = (size_t)(t - s);
119 if(l == 3 && !strncmp(s, "all", 3))
120 r = RIGHTS__MASK;
121 else {
122 for(n = 0; n < NRIGHTS; ++n)
123 if(strlen(rights_names[n].name) == l
124 && !strncmp(rights_names[n].name, s, l))
125 break;
126 if(n >= NRIGHTS) {
127 error(0, "unknown user right '%.*s'", (int)l, s);
128 return -1;
129 }
130 r |= rights_names[n].bit;
131 }
132 s = t;
133 if(*s == ',')
134 ++s;
135 }
136 if(rp)
137 *rp = r;
138 return 0;
139}
140
141/*
142Local Variables:
143c-basic-offset:2
144comment-column:40
145fill-column:79
146indent-tabs-mode:nil
147End:
148*/