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1 /* $Id: packets.c,v 1.1.1.1 1997/12/06 05:41:29 darius Exp $ */
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2
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3 #include <stddef.h>
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4
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5 #include "defs.h"
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6 #include "packets.h"
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7 #include "gppackets.h"
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8 #include "wtext.h"
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9
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10 size_t client_packet_sizes[] = {
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11 0,
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12 sizeof(struct mesg_cpacket),
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13 sizeof(struct speed_cpacket),
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14 sizeof(struct dir_cpacket),
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15 sizeof(struct phaser_cpacket),
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16 sizeof(struct plasma_cpacket),
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17 sizeof(struct torp_cpacket),
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18 sizeof(struct quit_cpacket),
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19 sizeof(struct login_cpacket),
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20 sizeof(struct outfit_cpacket),
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21 /* 10 v */
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22 sizeof(struct war_cpacket),
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23 sizeof(struct practr_cpacket),
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24 sizeof(struct shield_cpacket),
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25 sizeof(struct repair_cpacket),
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26 sizeof(struct orbit_cpacket),
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27 sizeof(struct planlock_cpacket),
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28 sizeof(struct playlock_cpacket),
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29 sizeof(struct bomb_cpacket),
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30 sizeof(struct beam_cpacket),
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31 sizeof(struct cloak_cpacket),
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32 /* 20 v */
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33 sizeof(struct det_torps_cpacket),
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34 sizeof(struct det_mytorp_cpacket),
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35 sizeof(struct copilot_cpacket),
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36 sizeof(struct refit_cpacket),
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37 sizeof(struct tractor_cpacket),
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38 sizeof(struct repress_cpacket),
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39 sizeof(struct coup_cpacket),
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40 sizeof(struct socket_cpacket),
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41 sizeof(struct options_cpacket),
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42 sizeof(struct bye_cpacket),
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43 /* 30 v */
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44 sizeof(struct dockperm_cpacket),
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45 sizeof(struct updates_cpacket),
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46 sizeof(struct resetstats_cpacket),
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47 sizeof(struct reserved_cpacket),
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48 sizeof(struct scan_cpacket),
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49 sizeof(struct udp_req_cpacket),
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50 sizeof(struct sequence_cpacket),
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51 sizeof(struct rsa_key_cpacket),
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52 sizeof(struct obvious_packet),
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53 0,
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54 /* 40 v */
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55 0,
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56 0,
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57 sizeof(struct ping_cpacket),/* 42 */
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58 #ifdef SHORT_PACKETS
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59 sizeof(struct shortreq_cpacket),
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60 sizeof(struct threshold_cpacket),
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61 0, /* CP_S_MESSAGE */
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62 0, /* CP_S_RESERVED */
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63 0, /* CP_S_DUMMY */
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64 #else
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65 0,
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66 0,
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67 0,
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68 0,
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69 0, /* 47 */
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70 #endif
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71 0, /* 48 */
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72 0,
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73 /* 50 v */
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74 0,
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75 0,
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76 0,
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77 0,
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78 0,
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79 0,
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80 0,
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81 0,
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82 0,
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83 0, /* 59 */
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84 #ifdef FEATURE
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85 sizeof(struct feature_cpacket) /* CP_FEATURE */
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86 #else
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87 0
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88 #endif
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89 };
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90
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91 #define num_cpacket_sizes sizeof(client_packet_sizes)/sizeof(*client_packet_sizes)
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92
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93 int
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94 size_of_cpacket(pkt)
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95 void *pkt;
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96 {
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97 CARD8 type;
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98 CARD8 subtype;
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99
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100 type = ((CARD8 *) pkt)[0];
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101 subtype = ((CARD8 *) pkt)[1];
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102
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103 if (type < num_cpacket_sizes && client_packet_sizes[type] > 0)
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104 return client_packet_sizes[type];
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105
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106 switch (type) {
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107 #ifdef CP_FIRE_WEAPON
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108 case CP_FIRE_WEAPON:
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109 {
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110 struct fire_weapon_cpacket *fwp = pkt;
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111 return (fwp->mech == TM_POSITION) ? 12 : 4;
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112 }
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113 #endif
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114
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115 #ifdef SHORT_PACKETS
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116 case CP_S_MESSAGE:
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117 return ((unsigned char *) pkt)[3];
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118 case CP_S_RESERVED:
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119 case CP_S_DUMMY:
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120 /* hmm? good question */
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121 return 0;
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122 #endif /* SHORT_PACKETS */
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123
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124 default:
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125 return 0;
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126 }
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127 }
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128
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129
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130 int server_packet_sizes[] = {
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131 0, /* record 0 */
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132 sizeof(struct mesg_spacket),/* SP_MESSAGE */
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133 sizeof(struct plyr_info_spacket), /* SP_PLAYER_INFO */
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134 sizeof(struct kills_spacket), /* SP_KILLS */
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135 sizeof(struct player_spacket), /* SP_PLAYER */
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136 sizeof(struct torp_info_spacket), /* SP_TORP_INFO */
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137 sizeof(struct torp_spacket),/* SP_TORP */
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138 sizeof(struct phaser_spacket), /* SP_PHASER */
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139 sizeof(struct plasma_info_spacket), /* SP_PLASMA_INFO */
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140 sizeof(struct plasma_spacket), /* SP_PLASMA */
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141 /* 10 v */
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142 sizeof(struct warning_spacket), /* SP_WARNING */
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143 sizeof(struct motd_spacket),/* SP_MOTD */
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144 sizeof(struct you_spacket), /* SP_YOU */
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145 sizeof(struct queue_spacket), /* SP_QUEUE */
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146 sizeof(struct status_spacket), /* SP_STATUS */
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147 sizeof(struct planet_spacket), /* SP_PLANET */
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148 sizeof(struct pickok_spacket), /* SP_PICKOK */
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149 sizeof(struct login_spacket), /* SP_LOGIN */
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150 sizeof(struct flags_spacket), /* SP_FLAGS */
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151 sizeof(struct mask_spacket),/* SP_MASK */
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152 /* 20 v */
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153 sizeof(struct pstatus_spacket), /* SP_PSTATUS */
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154 sizeof(struct badversion_spacket), /* SP_BADVERSION */
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155 sizeof(struct hostile_spacket), /* SP_HOSTILE */
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156 sizeof(struct stats_spacket), /* SP_STATS */
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157 sizeof(struct plyr_login_spacket), /* SP_PL_LOGIN */
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158 sizeof(struct reserved_spacket), /* SP_RESERVED */
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159 sizeof(struct planet_loc_spacket), /* SP_PLANET_LOC */
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160 sizeof(struct scan_spacket),/* SP_SCAN (ATM) */
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161 sizeof(struct udp_reply_spacket), /* SP_UDP_REPLY */
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162 sizeof(struct sequence_spacket), /* SP_SEQUENCE */
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163 /* 30 v */
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164 sizeof(struct sc_sequence_spacket), /* SP_SC_SEQUENCE */
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165 sizeof(struct rsa_key_spacket), /* SP_RSA_KEY */
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166 sizeof(struct motd_pic_spacket), /* SP_MOTD_PIC */
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167 sizeof(struct stats_spacket2), /* SP_STATS2 */
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168 sizeof(struct status_spacket2), /* SP_STATUS2 */
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169 sizeof(struct planet_spacket2), /* SP_PLANET2 */
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170 sizeof(struct obvious_packet), /* SP_NEW_MOTD */
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171 sizeof(struct thingy_spacket), /* SP_THINGY */
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172 sizeof(struct thingy_info_spacket), /* SP_THINGY_INFO */
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173 sizeof(struct ship_cap_spacket), /* SP_SHIP_CAP */
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174 /* 40 v */
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175 #ifdef SHORT_PACKETS
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176 sizeof(struct shortreply_spacket), /* SP_S_REPLY */
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177 -1, /* SP_S_MESSAGE */
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178 -1, /* SP_S_WARNING */
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179 sizeof(struct youshort_spacket), /* SP_S_YOU */
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180 sizeof(struct youss_spacket), /* SP_S_YOU_SS */
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181 -1, /* SP_S_PLAYER */
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182 #else
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183 -1,
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184 -1,
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185 -1,
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186 -1,
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187 -1,
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188 -1,
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189 #endif
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190 sizeof(struct ping_spacket),/* SP_PING */
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191 -1, /* SP_S_TORP */
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192 -1, /* SP_S_TORP_INFO */
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193 20, /* SP_S_8_TORP */
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194 /* 50 v */
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195 -1, /* SP_S_PLANET */
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196 -1, /* SP_GPARAM */
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197 -1, /* SP_PARADISE_EXT1 */
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198 sizeof(struct terrain_packet2), /* SP_TERRAIN2 */
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199 sizeof(struct terrain_info_packet2), /* SP_TERRAIN_INFO2 */
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200 -1,
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201 -1,
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202 -1,
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203 -1,
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204 -1,
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205 /* 60 v */
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206 #ifdef FEATURE
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207 sizeof(struct feature_spacket),
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208 #else
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209 -1,
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210 #endif
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211 -1
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212 };
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213
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214 #define num_spacket_sizes (sizeof(server_packet_sizes) / sizeof(server_packet_sizes[0]) - 1)
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215
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216 #ifdef SHORT_PACKETS
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217 unsigned char numofbits[256] =
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218 {0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1,
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219 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 1,
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220 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2,
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221 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 1,
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222 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2,
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223 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2,
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224 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3,
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225 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 1,
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226 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2,
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227 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2,
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228 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3,
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229 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 2,
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230 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3,
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231 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 3,
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232 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 4,
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233 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8};
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234
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235 static int vtsize[9] =
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236 {4, 8, 8, 12, 12, 16, 20, 20, 24}; /* How big is the torppacket */
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237 int vtisize[9] =
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238 {4, 7, 9, 11, 13, 16, 18, 20, 22}; /* 4 byte Header + torpdata */
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239
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240
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241 static int
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242 padto4(sz)
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243 int sz;
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244 {
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245 return (sz % 4) ? (sz / 4 + 1) * 4 : sz;
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246
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247 }
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248 #endif
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249
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250 int
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251 size_of_spacket(pkt)
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252 unsigned char *pkt;
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253 {
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254 switch (pkt[0]) {
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255 case SP_GPARAM:
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256 switch (pkt[1]) {
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257 case 0:
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258 return sizeof(struct gp_sizes_spacket);
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259 case 1:
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260 return sizeof(struct gp_team_spacket);
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261 case 2:
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262 return sizeof(struct gp_teamlogo_spacket);
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263 case 3:
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264 return sizeof(struct gp_shipshape_spacket);
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265 case 4:
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266 return sizeof(struct gp_shipbitmap_spacket);
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267 case 5:
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268 return sizeof(struct gp_rank_spacket);
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269 case 6:
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270 return sizeof(struct gp_royal_spacket);
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271 case 7:
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272 return sizeof(struct gp_teamplanet_spacket);
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273 default:
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274 return 0;
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275 }
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276 #ifdef SHORT_PACKETS
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277 case SP_S_MESSAGE:
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278 return padto4(pkt[4]); /* IMPORTANT Changed */
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279 case SP_S_WARNING:
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280 if (pkt[1] == STEXTE_STRING ||
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281 pkt[1] == SHORT_WARNING) {
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282 return padto4(pkt[3]);
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283 } else
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284 return 4; /* Normal Packet */
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285 case SP_S_PLAYER:
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286 if (pkt[1] & 128) { /* Small +extended Header */
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287 return padto4(((pkt[1] & 0x3f) * 4) + 4);
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288 } else if (pkt[1] & 64) { /* Small Header */
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289 return padto4(((pkt[1] & 0x3f) * 4) + 4);
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290 } else { /* Big Header */
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291 return padto4((pkt[1] * 4 + 12));
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292 }
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293 case SP_S_TORP:
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294 return padto4(vtsize[numofbits[pkt[1]]]);
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295 case SP_S_TORP_INFO:
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296 return padto4((vtisize[numofbits[pkt[1]]] + numofbits[pkt[3]]));
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297 case SP_S_PLANET:
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298 return padto4((pkt[1] * VPLANET_SIZE) + 2);
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299 #endif
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300 case SP_PARADISE_EXT1:
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301 switch (pkt[1]) {
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302 case SP_PE1_MISSING_BITMAP:
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303 return sizeof(struct pe1_missing_bitmap_spacket);
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304 case SP_PE1_NUM_MISSILES:
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305 return sizeof(struct pe1_num_missiles_spacket);
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306 default:
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307 return 0;
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308 }
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309 #ifdef RECORDER
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310 case REC_UPDATE:
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311 {
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312 extern int playback;
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313 if (playback) /* if not, something's very wrong... */
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314 return 4;
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315 }
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316 #endif
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317 default:
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318 return (*pkt < num_spacket_sizes && server_packet_sizes[*pkt] >= 0)
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319 ? server_packet_sizes[*pkt] : 0;
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320 }
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321 }
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