| 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 | |
| 35 | static 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 | { RIGHT_PAUSE, "pause" } |
| 58 | }; |
| 59 | #define NRIGHTS (sizeof rights_names / sizeof *rights_names) |
| 60 | |
| 61 | /** @brief Convert a rights word to a string */ |
| 62 | char *rights_string(rights_type r) { |
| 63 | struct dynstr d[1]; |
| 64 | size_t n; |
| 65 | |
| 66 | dynstr_init(d); |
| 67 | for(n = 0; n < NRIGHTS; ++n) { |
| 68 | if(r & rights_names[n].bit) { |
| 69 | if(d->nvec) |
| 70 | dynstr_append(d, ','); |
| 71 | dynstr_append_string(d, rights_names[n].name); |
| 72 | } |
| 73 | } |
| 74 | dynstr_terminate(d); |
| 75 | return d->vec; |
| 76 | } |
| 77 | |
| 78 | /** @brief Parse a rights list |
| 79 | * @param s Rights list in string form |
| 80 | * @param rp Where to store rights, or NULL to just validate |
| 81 | * @param report Nonzero to log errors |
| 82 | * @return 0 on success, non-0 if @p s is not valid |
| 83 | */ |
| 84 | int parse_rights(const char *s, rights_type *rp, int report) { |
| 85 | rights_type r = 0; |
| 86 | const char *t; |
| 87 | size_t n, l; |
| 88 | |
| 89 | if(!*s) { |
| 90 | /* You can't have no rights */ |
| 91 | if(report) |
| 92 | error(0, "empty rights string"); |
| 93 | return -1; |
| 94 | } |
| 95 | while(*s) { |
| 96 | t = strchr(s, ','); |
| 97 | if(!t) |
| 98 | t = s + strlen(s); |
| 99 | l = (size_t)(t - s); |
| 100 | if(l == 3 && !strncmp(s, "all", 3)) |
| 101 | r = RIGHTS__MASK; |
| 102 | else { |
| 103 | for(n = 0; n < NRIGHTS; ++n) |
| 104 | if(strlen(rights_names[n].name) == l |
| 105 | && !strncmp(rights_names[n].name, s, l)) |
| 106 | break; |
| 107 | if(n >= NRIGHTS) { |
| 108 | if(report) |
| 109 | error(0, "unknown user right '%.*s'", (int)l, s); |
| 110 | return -1; |
| 111 | } |
| 112 | r |= rights_names[n].bit; |
| 113 | } |
| 114 | s = t; |
| 115 | if(*s == ',') |
| 116 | ++s; |
| 117 | } |
| 118 | if(rp) |
| 119 | *rp = r; |
| 120 | return 0; |
| 121 | } |
| 122 | |
| 123 | /* |
| 124 | Local Variables: |
| 125 | c-basic-offset:2 |
| 126 | comment-column:40 |
| 127 | fill-column:79 |
| 128 | indent-tabs-mode:nil |
| 129 | End: |
| 130 | */ |