| 1 | /* |
1 | /* |
| 2 | * This file is part of Crossfire TRT, the Roguelike Realtime MORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
| 3 | * |
3 | * |
| 4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
4 | * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
| 5 | * Copyright (©) 2001,2007 Mark Wedel |
5 | * Copyright (©) 2001,2007 Mark Wedel |
| 6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
| 7 | * |
7 | * |
| 8 | * Crossfire TRT is free software: you can redistribute it and/or modify |
8 | * Deliantra is free software: you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation, either version 3 of the License, or |
10 | * the Free Software Foundation, either version 3 of the License, or |
| 11 | * (at your option) any later version. |
11 | * (at your option) any later version. |
| 12 | * |
12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, |
| … | |
… | |
| 16 | * GNU General Public License for more details. |
16 | * GNU General Public License for more details. |
| 17 | * |
17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 | * |
20 | * |
| 21 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
21 | * The authors can be reached via e-mail to <support@deliantra.net> |
| 22 | */ |
22 | */ |
| 23 | |
23 | |
| 24 | /** \file |
24 | /** \file |
| 25 | * Image related communication |
25 | * Image related communication |
| 26 | * |
26 | * |
| … | |
… | |
| 38 | #include "crc.h" |
38 | #include "crc.h" |
| 39 | |
39 | |
| 40 | #define MAX_IMAGE_SIZE 10000 |
40 | #define MAX_IMAGE_SIZE 10000 |
| 41 | |
41 | |
| 42 | /** |
42 | /** |
| 43 | * Client tells us what type of faces it wants. Also sets |
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| 44 | * the caching attribute. |
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| 45 | * |
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| 46 | */ |
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| 47 | void |
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| 48 | SetFaceMode (char *buf, int len, client *ns) |
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| 49 | { |
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| 50 | int mask = (atoi (buf) & CF_FACE_CACHE), mode = (atoi (buf) & ~CF_FACE_CACHE); |
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| 51 | |
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| 52 | if (mode == CF_FACE_NONE) |
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| 53 | ns->facecache = 1; |
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| 54 | else if (mode != CF_FACE_PNG) |
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| 55 | ns->send_packet_printf ("drawinfo %d %s", NDI_RED, "Warning - send unsupported face mode. Will use Png"); |
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| 56 | |
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| 57 | if (mask) |
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| 58 | ns->facecache = 1; |
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| 59 | } |
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| 60 | |
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| 61 | /** |
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| 62 | * client requested an image. send it rate-limited |
43 | * client requested an image. send it rate-limited |
| 63 | * before flushing. |
44 | * before flushing. |
| 64 | */ |
45 | */ |
| 65 | void |
46 | void |
| 66 | AskFaceCmd (char *buf, int len, client *ns) |
47 | AskFaceCmd (char *buf, int len, client *ns) |
| 67 | { |
48 | { |
| 68 | int idx = 0, pri = 0; |
49 | int idx = 0, pri = 0; |
| 69 | |
50 | |
| 70 | sscanf (buf, "%d %d", &idx, &pri); |
51 | sscanf (buf, "%d %d", &idx, &pri); |
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52 | |
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53 | //TODO: somehow fetch default priority from send_fx here |
| 71 | |
54 | |
| 72 | const facedata *d = face_data (idx, ns->faceset); |
55 | const facedata *d = face_data (idx, ns->faceset); |
| 73 | |
56 | |
| 74 | if (!d) |
57 | if (!d) |
| 75 | return; // doh |
58 | return; // doh |
| … | |
… | |
| 80 | ix.idx = idx; |
63 | ix.idx = idx; |
| 81 | ix.ofs = d->data.size (); |
64 | ix.ofs = d->data.size (); |
| 82 | |
65 | |
| 83 | auto (pos, ns->ixface.end ()); |
66 | auto (pos, ns->ixface.end ()); |
| 84 | |
67 | |
| 85 | if (ns->fxix < 2) |
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| 86 | { |
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| 87 | // gcfclient does not support prioritising, older cfplus versions |
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| 88 | // do not support interleaved transfers. |
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| 89 | if (!ns->ixface.empty ()) |
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| 90 | pos = ns->ixface.end () - 1; |
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| 91 | } |
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| 92 | else |
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| 93 | { |
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| 94 | // the by far most common case will be to insert |
68 | // the by far most common case will be to insert |
| 95 | // near the end, so little looping. |
69 | // near the end, so little looping. |
| 96 | while (pos != ns->ixface.begin ()) |
70 | while (pos != ns->ixface.begin ()) |
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71 | { |
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72 | --pos; |
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73 | |
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74 | // sort within 2k bins, to slightly prefer smaller images |
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75 | if (pri > pos->pri || (pri == pos->pri && (ix.ofs >> 11) <= (pos->ofs >> 11))) |
| 97 | { |
76 | { |
| 98 | --pos; |
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| 99 | |
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| 100 | // sort within 2k bins, to slightly prefer smaller images |
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| 101 | if (pri > pos->pri || (pri == pos->pri && (ix.ofs >> 11) <= (pos->ofs >> 11))) |
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| 102 | { |
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| 103 | ++pos; |
77 | ++pos; |
| 104 | break; |
78 | break; |
| 105 | } |
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| 106 | } |
79 | } |
| 107 | } |
80 | } |
| 108 | |
81 | |
| 109 | ns->ixface.insert (pos, ix); |
82 | ns->ixface.insert (pos, ix); |
| 110 | |
83 | |
| 111 | #if 0 |
84 | #if 0 |
| 112 | for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i) |
85 | for (auto (i, ns->ixface.begin ()); i != ns->ixface.end (); ++i) |
| 113 | fprintf (stderr, "<%d,%d> ", i->pri, i->ofs); |
86 | fprintf (stderr, "<%d,%d> ", i->pri, i->ofs); |
| 114 | fprintf (stderr, "\n"); |
87 | fprintf (stderr, "\n"); |
| 115 | #endif |
88 | #endif |
| 116 | } |
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| 117 | |
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| 118 | /** |
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| 119 | * Tells client the picture it has to use |
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| 120 | * to smooth a picture number given as argument. |
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| 121 | */ |
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| 122 | void |
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| 123 | AskSmooth (char *buf, int len, client *ns) |
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| 124 | { |
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| 125 | ns->send_face (atoi (buf), -100); |
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| 126 | ns->flush_fx (); |
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| 127 | } |
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| 128 | |
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| 129 | // how lame |
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| 130 | static void print_facename (packet &sl, const facedata &d) |
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| 131 | { |
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| 132 | for (int i = 0; i < CHKSUM_SIZE; ++i) |
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| 133 | sl.printf ("%02x", d.chksum [i]); |
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| 134 | } |
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| 135 | |
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| 136 | // gcfclient uses the server-provided checksum for comparison, but always |
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| 137 | // writes a broken checksum to its cache file, so we have to provide |
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| 138 | // gcfclient with the same broken (and useless) checksum just to have it |
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| 139 | // cache the image despite its bugs. |
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| 140 | static uint32 gcfclient_checksum (const facedata *d) |
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| 141 | { |
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| 142 | uint32 csum = 0; |
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| 143 | |
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| 144 | for (std::string::const_iterator i = d->data.begin (); |
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| 145 | i != d->data.end (); |
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| 146 | ++i) |
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| 147 | { |
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| 148 | csum = rotate_right (csum); |
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| 149 | csum += *(uint8 *)&*i; |
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| 150 | } |
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| 151 | |
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| 152 | return csum; |
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| 153 | } |
89 | } |
| 154 | |
90 | |
| 155 | /** |
91 | /** |
| 156 | * Sends a face to a client if they are in pixmap mode |
92 | * Sends a face to a client if they are in pixmap mode |
| 157 | * nothing gets sent in bitmap mode. |
93 | * nothing gets sent in bitmap mode. |
| … | |
… | |
| 169 | |
105 | |
| 170 | faceinfo *f = face_info (facenum); |
106 | faceinfo *f = face_info (facenum); |
| 171 | |
107 | |
| 172 | if (!f) |
108 | if (!f) |
| 173 | { |
109 | { |
| 174 | LOG (llevError, "client::send_face (%d) out of bounds??\n", facenum); |
110 | LOG (llevError | logBacktrace, "client::send_face (%d) out of bounds??\n", facenum); |
| 175 | return; |
111 | return; |
| 176 | } |
112 | } |
| 177 | |
113 | |
| 178 | // refuse to send non-image faces |
114 | // refuse to send non-image faces |
| 179 | if (!fx_want [f->type]) |
115 | if (!fx_want [f->type]) |
| … | |
… | |
| 182 | if (faces_sent [facenum]) |
118 | if (faces_sent [facenum]) |
| 183 | return; |
119 | return; |
| 184 | |
120 | |
| 185 | faces_sent[facenum] = true; |
121 | faces_sent[facenum] = true; |
| 186 | |
122 | |
| 187 | // if for some reason we let a client without face caching connect, |
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| 188 | // we better support that decision here and implement it. |
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| 189 | if (!facecache) |
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| 190 | return send_image (facenum); |
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| 191 | |
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| 192 | if (fxix) |
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| 193 | { |
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| 194 | fxface.push_back (facenum); |
123 | fxface.push_back (facenum); |
| 195 | return; |
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| 196 | } |
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| 197 | |
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| 198 | const facedata *d = f->data (faceset); |
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| 199 | |
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| 200 | packet sl; |
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| 201 | |
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| 202 | if (force_face0) |
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| 203 | sl << "face " << uint16 (facenum); |
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| 204 | else if (image2) |
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| 205 | sl << "face2 " << uint16 (facenum) << uint8 (0) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0); |
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| 206 | else |
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| 207 | sl << "face1 " << uint16 (facenum) << uint32 (force_bad_checksum ? gcfclient_checksum (d) : 0); |
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| 208 | |
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| 209 | // how lame |
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| 210 | print_facename (sl, *d); |
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| 211 | send_packet (sl); |
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| 212 | |
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| 213 | if (EMI_smooth) |
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| 214 | { |
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| 215 | if (f->smooth) |
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| 216 | { |
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| 217 | send_face (f->smooth); |
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| 218 | |
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| 219 | packet sl ("smooth"); |
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| 220 | |
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| 221 | sl << uint16 (facenum) |
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| 222 | << uint16 (f->smooth); |
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| 223 | |
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| 224 | send_packet (sl); |
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| 225 | } |
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| 226 | } |
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| 227 | } |
124 | } |
| 228 | |
125 | |
| 229 | void client::flush_fx () |
126 | void client::flush_fx () |
| 230 | { |
127 | { |
| 231 | while (!fxface.empty ()) |
128 | while (!fxface.empty ()) |
| … | |
… | |
| 275 | send_packet (fx); |
172 | send_packet (fx); |
| 276 | if (sx.length () > 3) send_packet (sx); |
173 | if (sx.length () > 3) send_packet (sx); |
| 277 | } |
174 | } |
| 278 | } |
175 | } |
| 279 | |
176 | |
| 280 | void |
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| 281 | client::send_image (faceidx facenum) |
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| 282 | { |
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| 283 | // never send face 0. ever. it does not exist. |
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| 284 | if (!facenum) |
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| 285 | return; |
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| 286 | |
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| 287 | const facedata *d = face_data (facenum, faceset); |
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| 288 | |
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| 289 | faces_sent[facenum] = true; |
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| 290 | |
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| 291 | if (!d) |
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| 292 | { |
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| 293 | LOG (llevError, "client::send_image (%d) out of bounds??\n", facenum); |
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| 294 | return; |
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| 295 | } |
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| 296 | |
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| 297 | //TODO: check type here? |
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| 298 | |
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| 299 | if (force_image_newmap) |
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| 300 | force_newmap = true; |
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| 301 | |
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| 302 | packet sl; |
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| 303 | |
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| 304 | sl << (image2 ? "image2 " : "image ") |
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| 305 | << uint32 (facenum); |
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| 306 | |
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| 307 | if (image2) |
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| 308 | sl << uint8 (0); |
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| 309 | |
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| 310 | sl << uint32 (d->data.size ()) |
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| 311 | << data (d->data.data (), d->data.size ()); |
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| 312 | |
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| 313 | send_packet (sl); |
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| 314 | } |
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| 315 | |
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| 316 | // send all faces of this object to the client |
177 | // send all faces of this object to the client |
| 317 | // this uses more bandwidth initially, but makes |
178 | // this uses more bandwidth initially, but makes |
| 318 | // animations look much smoother, and every client |
179 | // animations look much smoother, and every client |
| 319 | // is supposed to do client-side caching anyways. |
180 | // is supposed to do client-side caching anyways. |
| 320 | void |
181 | void |
| … | |
… | |
| 420 | } |
281 | } |
| 421 | |
282 | |
| 422 | sl.printf ("replyinfo image_sums %d %d ", start, stop); |
283 | sl.printf ("replyinfo image_sums %d %d ", start, stop); |
| 423 | |
284 | |
| 424 | for (int i = start; i <= stop && i < faces.size (); i++) |
285 | for (int i = start; i <= stop && i < faces.size (); i++) |
| 425 | { |
286 | if (const faceinfo *f = face_info (i)) |
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287 | if (ns->fx_want [f->type]) |
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288 | { |
| 426 | ns->faces_sent[i] = true; |
289 | ns->faces_sent[i] = true; |
| 427 | |
290 | |
| 428 | const facedata *d = face_data (i, ns->faceset); |
291 | const facedata *d = f->data (ns->faceset); |
| 429 | |
292 | |
| 430 | if (sl.room () < 2 + 4 + 1 + d->data.size () + 1) |
293 | if (sl.room () < 2 + 4 + 1 + d->data.size () + 1) |
| 431 | break; |
294 | break; |
| 432 | |
295 | |
| 433 | sl << uint16 (i) |
296 | sl << uint16 (i) |
| 434 | << uint32 (0) // checksum |
297 | << uint32 (0) // checksum |
| 435 | << uint8 (ns->faceset); |
298 | << uint8 (ns->faceset); |
| 436 | |
299 | |
| 437 | print_facename (sl, *d); sl << uint8 (0); |
300 | for (int i = 0; i < CHKSUM_SIZE; ++i) |
| 438 | } |
301 | sl.printf ("%02x", d->chksum [i]); |
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302 | |
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303 | sl << uint8 (0); |
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304 | } |
| 439 | |
305 | |
| 440 | /* It would make more sense to catch this pre-emptively in the code above. |
306 | /* It would make more sense to catch this pre-emptively in the code above. |
| 441 | * however, if this really happens, we probably just want to cut down the |
307 | * however, if this really happens, we probably just want to cut down the |
| 442 | * size to less than 1000, since that is what we claim the protocol would |
308 | * size to less than 1000, since that is what we claim the protocol would |
| 443 | * support. |
309 | * support. |
| 444 | */ |
310 | */ |
| 445 | //TODO: taken care of above, should simply abort or make sure the above code is correct |
311 | //TODO: taken care of above, should simply abort or make sure the above code is correct |
| 446 | if (sl.length () >= MAXSOCKBUF) |
312 | if (sl.length () > MAXSOCKBUF) |
| 447 | { |
313 | { |
| 448 | LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF); |
314 | LOG (llevError, "send_image_send: buffer overrun, %d > %d\n", sl.length (), MAXSOCKBUF); |
| 449 | abort (); |
315 | abort (); |
| 450 | } |
316 | } |
| 451 | |
317 | |
