1 /*
2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
5 *
6 * Empire is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 *
19 * ---
20 *
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
24 *
25 * ---
26 *
27 * xdump.c: Extended dump
28 *
29 * Known contributors to this file:
30 * Markus Armbruster, 2004-2016
31 */
32
33 #include <config.h>
34
35 #include <ctype.h>
36 #include "commands.h"
37 #include "empobj.h"
38 #include "optlist.h"
39 #include "xdump.h"
40
41 /*
42 * Is object @p of type @type visible to the player?
43 * TODO: Fold this into interators.
44 */
45 static int
xdvisible(int type,void * p)46 xdvisible(int type, void *p)
47 {
48 struct empobj *gp = p;
49 struct lonstr *lp = p;
50 struct natstr *natp;
51 int tlev;
52
53 if (!empobj_in_use(type, p))
54 return 0;
55
56 switch (type) {
57 case EF_SECTOR:
58 case EF_SHIP:
59 case EF_PLANE:
60 case EF_LAND:
61 case EF_NUKE:
62 case EF_LOST:
63 case EF_REALM:
64 return gp->own == player->cnum || player->god;
65 case EF_COUNTRY:
66 return gp->own == player->cnum;
67 case EF_NEWS:
68 return !opt_HIDDEN || player->god; /* FIXME */
69 case EF_LOAN:
70 if (lp->l_status == LS_SIGNED)
71 return 1;
72 return lp->l_loner == player->cnum || lp->l_lonee == player->cnum
73 || player->god;
74 case EF_SHIP_CHR:
75 tlev = ((struct mchrstr *)p)->m_tech;
76 goto tech;
77 case EF_PLANE_CHR:
78 tlev = ((struct plchrstr *)p)->pl_tech;
79 goto tech;
80 case EF_LAND_CHR:
81 tlev = ((struct lchrstr *)p)->l_tech;
82 tech:
83 natp = getnatp(player->cnum);
84 return player->god || tlev <= (int)(1.25 * natp->nat_level[NAT_TLEV]);
85 case EF_NUKE_CHR:
86 tlev = ((struct nchrstr *)p)->n_tech;
87 if (drnuke_const > MIN_DRNUKE_CONST) {
88 natp = getnatp(player->cnum);
89 if (tlev > (int)((int)(1.25 * natp->nat_level[NAT_RLEV])
90 / drnuke_const))
91 return player->god;
92 }
93 goto tech;
94 case EF_TABLE:
95 return ((struct empfile *)p)->cadef != NULL;
96 default:
97 return 1;
98 }
99 }
100
101 /*
102 * Dump meta-data for items of type @type to @xd.
103 * Return RET_SYN when @type doesn't have meta-data, else RET_OK.
104 */
105 static int
xdmeta(struct xdstr * xd,int type)106 xdmeta(struct xdstr *xd, int type)
107 {
108 struct castr *ca = ef_cadef(type);
109 int i;
110 int n = 0;
111
112 if (!ca)
113 return RET_SYN;
114
115 xdhdr(xd, ef_nameof(type), 1);
116 xdcolhdr(xd, ca);
117
118 for (i = 0; ca[i].ca_name; i++) {
119 if (ca[i].ca_flags & NSC_DEITY && !xd->divine)
120 continue;
121 if (ca[i].ca_dump == CA_DUMP_NONE)
122 continue;
123 xdflds(xd, mdchr_ca, &ca[i]);
124 xd->pr("\n");
125 n++;
126 }
127
128 xdftr(xd, n);
129
130 return RET_OK;
131 }
132
133 /*
134 * Dump items of type @type selected by @arg to @xd.
135 * Return RET_OK on success, RET_SYN on error.
136 */
137 static int
xditem(struct xdstr * xd,int type,char * arg)138 xditem(struct xdstr *xd, int type, char *arg)
139 {
140 struct castr *ca;
141 struct nstr_item ni;
142 int n;
143 unsigned char buf[EF_WITH_CADEF_MAX_ENTRY_SIZE];
144
145 ca = ef_cadef(type);
146 if (!ca)
147 return RET_SYN;
148
149 if (!snxtitem(&ni, type, arg, NULL))
150 return RET_SYN;
151
152 xdhdr(xd, ef_nameof(type), 0);
153
154 n = 0;
155 while (nxtitem(&ni, buf)) {
156 if (!xdvisible(type, buf))
157 continue;
158 ++n;
159 xdflds(xd, ca, buf);
160 xd->pr("\n");
161 }
162
163 xdftr(xd, n);
164
165 return RET_OK;
166 }
167
168 /* Extended dump command */
169 int
c_xdump(void)170 c_xdump(void)
171 {
172 char *p;
173 char buf[1024];
174 struct xdstr xd;
175 struct natstr *natp;
176 int type;
177 int meta = 0;
178
179 p = getstarg(player->argp[1], "Table name, or meta? ", buf);
180 if (p && strcmp(p, "meta") == 0) {
181 meta = 1;
182 p = getstarg(player->argp[2], "Table name? ", buf);
183 }
184 if (!p || !*p)
185 return RET_SYN;
186
187 xdinit(&xd, player->cnum, 0, 0, pr);
188 natp = getnatp(player->cnum);
189 type = isdigit(p[0]) ? atoi(p) : ef_byname(p);
190 if (type < 0 || type >= EF_MAX)
191 return RET_SYN;
192 if (meta)
193 return xdmeta(&xd, type);
194 if ((EF_IS_GAME_STATE(type) || EF_IS_VIEW(type))
195 && !(natp->nat_stat == STAT_ACTIVE || player->god)) {
196 pr("Access to table %s denied\n", ef_nameof(type));
197 return RET_FAIL;
198 }
199 return xditem(&xd, type, player->argp[2]);
200 }
201