1 | /* |
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2 | * Handle ChatNav. |
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3 | * |
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4 | * [The ChatNav(igation) service does various things to keep chat |
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5 | * alive. It provides room information, room searching and creating, |
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6 | * as well as giving users the right ("permission") to use chat.] |
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7 | * |
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8 | */ |
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9 | |
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10 | #include <aim.h> |
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11 | #include "chatnav.h" |
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12 | |
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13 | /* |
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14 | * conn must be a chatnav connection! |
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15 | */ |
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16 | int aim_chatnav_reqrights(aim_session_t *sess, aim_conn_t *conn) |
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17 | { |
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18 | return aim_genericreq_n_snacid(sess, conn, 0x000d, 0x0002); |
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19 | } |
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20 | |
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21 | int aim_chatnav_createroom(aim_session_t *sess, aim_conn_t *conn, const char *name, guint16 exchange) |
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22 | { |
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23 | static const char ck[] = {"create"}; |
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24 | static const char lang[] = {"en"}; |
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25 | static const char charset[] = {"us-ascii"}; |
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26 | aim_frame_t *fr; |
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27 | aim_snacid_t snacid; |
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28 | aim_tlvlist_t *tl = NULL; |
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29 | |
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30 | if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 1152))) |
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31 | return -ENOMEM; |
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32 | |
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33 | snacid = aim_cachesnac(sess, 0x000d, 0x0008, 0x0000, NULL, 0); |
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34 | aim_putsnac(&fr->data, 0x000d, 0x0008, 0x0000, snacid); |
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35 | |
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36 | /* exchange */ |
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37 | aimbs_put16(&fr->data, exchange); |
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38 | |
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39 | /* |
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40 | * This looks to be a big hack. You'll note that this entire |
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41 | * SNAC is just a room info structure, but the hard room name, |
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42 | * here, is set to "create". |
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43 | * |
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44 | * Either this goes on the "list of questions concerning |
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45 | * why-the-hell-did-you-do-that", or this value is completly |
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46 | * ignored. Without experimental evidence, but a good knowledge of |
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47 | * AOL style, I'm going to guess that it is the latter, and that |
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48 | * the value of the room name in create requests is ignored. |
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49 | */ |
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50 | aimbs_put8(&fr->data, strlen(ck)); |
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51 | aimbs_putraw(&fr->data, (guint8 *)ck, strlen(ck)); |
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52 | |
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53 | /* |
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54 | * instance |
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55 | * |
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56 | * Setting this to 0xffff apparently assigns the last instance. |
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57 | * |
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58 | */ |
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59 | aimbs_put16(&fr->data, 0xffff); |
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60 | |
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61 | /* detail level */ |
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62 | aimbs_put8(&fr->data, 0x01); |
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63 | |
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64 | aim_addtlvtochain_raw(&tl, 0x00d3, strlen(name), (guint8 *)name); |
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65 | aim_addtlvtochain_raw(&tl, 0x00d6, strlen(charset), (guint8 *)charset); |
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66 | aim_addtlvtochain_raw(&tl, 0x00d7, strlen(lang), (guint8 *)lang); |
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67 | |
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68 | /* tlvcount */ |
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69 | aimbs_put16(&fr->data, aim_counttlvchain(&tl)); |
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70 | aim_writetlvchain(&fr->data, &tl); |
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71 | |
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72 | aim_freetlvchain(&tl); |
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73 | |
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74 | aim_tx_enqueue(sess, fr); |
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75 | |
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76 | return 0; |
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77 | } |
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78 | |
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79 | static int parseinfo_perms(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs, aim_snac_t *snac2) |
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80 | { |
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81 | aim_rxcallback_t userfunc; |
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82 | int ret = 0; |
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83 | struct aim_chat_exchangeinfo *exchanges = NULL; |
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84 | int curexchange; |
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85 | aim_tlv_t *exchangetlv; |
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86 | guint8 maxrooms = 0; |
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87 | aim_tlvlist_t *tlvlist, *innerlist; |
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88 | |
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89 | tlvlist = aim_readtlvchain(bs); |
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90 | |
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91 | /* |
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92 | * Type 0x0002: Maximum concurrent rooms. |
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93 | */ |
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94 | if (aim_gettlv(tlvlist, 0x0002, 1)) |
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95 | maxrooms = aim_gettlv8(tlvlist, 0x0002, 1); |
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96 | |
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97 | /* |
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98 | * Type 0x0003: Exchange information |
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99 | * |
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100 | * There can be any number of these, each one |
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101 | * representing another exchange. |
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102 | * |
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103 | */ |
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104 | for (curexchange = 0; ((exchangetlv = aim_gettlv(tlvlist, 0x0003, curexchange+1))); ) { |
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105 | aim_bstream_t tbs; |
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106 | |
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107 | aim_bstream_init(&tbs, exchangetlv->value, exchangetlv->length); |
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108 | |
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109 | curexchange++; |
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110 | |
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111 | exchanges = g_realloc(exchanges, curexchange * sizeof(struct aim_chat_exchangeinfo)); |
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112 | |
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113 | /* exchange number */ |
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114 | exchanges[curexchange-1].number = aimbs_get16(&tbs); |
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115 | innerlist = aim_readtlvchain(&tbs); |
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116 | |
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117 | /* |
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118 | * Type 0x000a: Unknown. |
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119 | * |
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120 | * Usually three bytes: 0x0114 (exchange 1) or 0x010f (others). |
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121 | * |
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122 | */ |
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123 | if (aim_gettlv(innerlist, 0x000a, 1)) |
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124 | ; |
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125 | |
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126 | /* |
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127 | * Type 0x000d: Unknown. |
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128 | */ |
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129 | if (aim_gettlv(innerlist, 0x000d, 1)) |
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130 | ; |
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131 | |
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132 | /* |
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133 | * Type 0x0004: Unknown |
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134 | */ |
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135 | if (aim_gettlv(innerlist, 0x0004, 1)) |
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136 | ; |
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137 | |
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138 | /* |
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139 | * Type 0x0002: Unknown |
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140 | */ |
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141 | if (aim_gettlv(innerlist, 0x0002, 1)) { |
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142 | guint16 classperms; |
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143 | |
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144 | classperms = aim_gettlv16(innerlist, 0x0002, 1); |
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145 | |
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146 | } |
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147 | |
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148 | /* |
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149 | * Type 0x00c9: Flags |
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150 | * |
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151 | * 1 Evilable |
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152 | * 2 Nav Only |
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153 | * 4 Instancing Allowed |
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154 | * 8 Occupant Peek Allowed |
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155 | * |
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156 | */ |
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157 | if (aim_gettlv(innerlist, 0x00c9, 1)) |
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158 | exchanges[curexchange-1].flags = aim_gettlv16(innerlist, 0x00c9, 1); |
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159 | |
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160 | /* |
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161 | * Type 0x00ca: Creation Date |
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162 | */ |
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163 | if (aim_gettlv(innerlist, 0x00ca, 1)) |
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164 | ; |
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165 | |
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166 | /* |
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167 | * Type 0x00d0: Mandatory Channels? |
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168 | */ |
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169 | if (aim_gettlv(innerlist, 0x00d0, 1)) |
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170 | ; |
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171 | |
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172 | /* |
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173 | * Type 0x00d1: Maximum Message length |
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174 | */ |
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175 | if (aim_gettlv(innerlist, 0x00d1, 1)) |
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176 | ; |
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177 | |
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178 | /* |
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179 | * Type 0x00d2: Maximum Occupancy? |
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180 | */ |
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181 | if (aim_gettlv(innerlist, 0x00d2, 1)) |
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182 | ; |
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183 | |
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184 | /* |
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185 | * Type 0x00d3: Exchange Description |
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186 | */ |
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187 | if (aim_gettlv(innerlist, 0x00d3, 1)) |
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188 | exchanges[curexchange-1].name = aim_gettlv_str(innerlist, 0x00d3, 1); |
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189 | else |
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190 | exchanges[curexchange-1].name = NULL; |
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191 | |
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192 | /* |
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193 | * Type 0x00d4: Exchange Description URL |
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194 | */ |
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195 | if (aim_gettlv(innerlist, 0x00d4, 1)) |
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196 | ; |
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197 | |
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198 | /* |
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199 | * Type 0x00d5: Creation Permissions |
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200 | * |
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201 | * 0 Creation not allowed |
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202 | * 1 Room creation allowed |
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203 | * 2 Exchange creation allowed |
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204 | * |
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205 | */ |
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206 | if (aim_gettlv(innerlist, 0x00d5, 1)) { |
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207 | guint8 createperms; |
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208 | |
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209 | createperms = aim_gettlv8(innerlist, 0x00d5, 1); |
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210 | } |
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211 | |
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212 | /* |
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213 | * Type 0x00d6: Character Set (First Time) |
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214 | */ |
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215 | if (aim_gettlv(innerlist, 0x00d6, 1)) |
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216 | exchanges[curexchange-1].charset1 = aim_gettlv_str(innerlist, 0x00d6, 1); |
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217 | else |
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218 | exchanges[curexchange-1].charset1 = NULL; |
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219 | |
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220 | /* |
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221 | * Type 0x00d7: Language (First Time) |
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222 | */ |
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223 | if (aim_gettlv(innerlist, 0x00d7, 1)) |
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224 | exchanges[curexchange-1].lang1 = aim_gettlv_str(innerlist, 0x00d7, 1); |
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225 | else |
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226 | exchanges[curexchange-1].lang1 = NULL; |
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227 | |
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228 | /* |
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229 | * Type 0x00d8: Character Set (Second Time) |
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230 | */ |
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231 | if (aim_gettlv(innerlist, 0x00d8, 1)) |
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232 | exchanges[curexchange-1].charset2 = aim_gettlv_str(innerlist, 0x00d8, 1); |
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233 | else |
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234 | exchanges[curexchange-1].charset2 = NULL; |
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235 | |
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236 | /* |
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237 | * Type 0x00d9: Language (Second Time) |
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238 | */ |
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239 | if (aim_gettlv(innerlist, 0x00d9, 1)) |
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240 | exchanges[curexchange-1].lang2 = aim_gettlv_str(innerlist, 0x00d9, 1); |
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241 | else |
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242 | exchanges[curexchange-1].lang2 = NULL; |
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243 | |
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244 | /* |
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245 | * Type 0x00da: Unknown |
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246 | */ |
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247 | if (aim_gettlv(innerlist, 0x00da, 1)) |
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248 | ; |
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249 | |
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250 | aim_freetlvchain(&innerlist); |
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251 | } |
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252 | |
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253 | /* |
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254 | * Call client. |
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255 | */ |
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256 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) |
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257 | ret = userfunc(sess, rx, snac2->type, maxrooms, curexchange, exchanges); |
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258 | |
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259 | for (curexchange--; curexchange >= 0; curexchange--) { |
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260 | g_free(exchanges[curexchange].name); |
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261 | g_free(exchanges[curexchange].charset1); |
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262 | g_free(exchanges[curexchange].lang1); |
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263 | g_free(exchanges[curexchange].charset2); |
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264 | g_free(exchanges[curexchange].lang2); |
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265 | } |
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266 | g_free(exchanges); |
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267 | aim_freetlvchain(&tlvlist); |
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268 | |
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269 | return ret; |
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270 | } |
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271 | |
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272 | static int parseinfo_create(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs, aim_snac_t *snac2) |
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273 | { |
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274 | aim_rxcallback_t userfunc; |
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275 | aim_tlvlist_t *tlvlist, *innerlist; |
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276 | char *ck = NULL, *fqcn = NULL, *name = NULL; |
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277 | guint16 exchange = 0, instance = 0, unknown = 0, flags = 0, maxmsglen = 0, maxoccupancy = 0; |
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278 | guint32 createtime = 0; |
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279 | guint8 createperms = 0, detaillevel; |
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280 | int cklen; |
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281 | aim_tlv_t *bigblock; |
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282 | int ret = 0; |
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283 | aim_bstream_t bbbs; |
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284 | |
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285 | tlvlist = aim_readtlvchain(bs); |
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286 | |
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287 | if (!(bigblock = aim_gettlv(tlvlist, 0x0004, 1))) { |
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288 | do_error_dialog(sess->aux_data, "no bigblock in top tlv in create room response", "Gaim"); |
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289 | |
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290 | aim_freetlvchain(&tlvlist); |
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291 | return 0; |
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292 | } |
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293 | |
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294 | aim_bstream_init(&bbbs, bigblock->value, bigblock->length); |
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295 | |
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296 | exchange = aimbs_get16(&bbbs); |
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297 | cklen = aimbs_get8(&bbbs); |
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298 | ck = aimbs_getstr(&bbbs, cklen); |
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299 | instance = aimbs_get16(&bbbs); |
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300 | detaillevel = aimbs_get8(&bbbs); |
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301 | |
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302 | if (detaillevel != 0x02) { |
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303 | do_error_dialog(sess->aux_data, "unknown detaillevel in create room response", "Gaim"); |
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304 | aim_freetlvchain(&tlvlist); |
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305 | g_free(ck); |
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306 | return 0; |
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307 | } |
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308 | |
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309 | unknown = aimbs_get16(&bbbs); |
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310 | |
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311 | innerlist = aim_readtlvchain(&bbbs); |
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312 | |
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313 | if (aim_gettlv(innerlist, 0x006a, 1)) |
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314 | fqcn = aim_gettlv_str(innerlist, 0x006a, 1); |
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315 | |
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316 | if (aim_gettlv(innerlist, 0x00c9, 1)) |
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317 | flags = aim_gettlv16(innerlist, 0x00c9, 1); |
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318 | |
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319 | if (aim_gettlv(innerlist, 0x00ca, 1)) |
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320 | createtime = aim_gettlv32(innerlist, 0x00ca, 1); |
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321 | |
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322 | if (aim_gettlv(innerlist, 0x00d1, 1)) |
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323 | maxmsglen = aim_gettlv16(innerlist, 0x00d1, 1); |
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324 | |
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325 | if (aim_gettlv(innerlist, 0x00d2, 1)) |
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326 | maxoccupancy = aim_gettlv16(innerlist, 0x00d2, 1); |
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327 | |
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328 | if (aim_gettlv(innerlist, 0x00d3, 1)) |
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329 | name = aim_gettlv_str(innerlist, 0x00d3, 1); |
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330 | |
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331 | if (aim_gettlv(innerlist, 0x00d5, 1)) |
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332 | createperms = aim_gettlv8(innerlist, 0x00d5, 1); |
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333 | |
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334 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) { |
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335 | ret = userfunc(sess, rx, snac2->type, fqcn, instance, exchange, flags, createtime, maxmsglen, maxoccupancy, createperms, unknown, name, ck); |
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336 | } |
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337 | |
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338 | g_free(ck); |
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339 | g_free(name); |
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340 | g_free(fqcn); |
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341 | aim_freetlvchain(&innerlist); |
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342 | aim_freetlvchain(&tlvlist); |
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343 | |
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344 | return ret; |
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345 | } |
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346 | |
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347 | /* |
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348 | * Since multiple things can trigger this callback, we must lookup the |
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349 | * snacid to determine the original snac subtype that was called. |
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350 | * |
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351 | * XXX This isn't really how this works. But this is: Every d/9 response |
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352 | * has a 16bit value at the beginning. That matches to: |
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353 | * Short Desc = 1 |
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354 | * Full Desc = 2 |
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355 | * Instance Info = 4 |
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356 | * Nav Short Desc = 8 |
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357 | * Nav Instance Info = 16 |
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358 | * And then everything is really asynchronous. There is no specific |
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359 | * attachment of a response to a create room request, for example. Creating |
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360 | * the room yields no different a response than requesting the room's info. |
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361 | * |
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362 | */ |
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363 | static int parseinfo(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) |
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364 | { |
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365 | aim_snac_t *snac2; |
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366 | int ret = 0; |
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367 | |
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368 | if (!(snac2 = aim_remsnac(sess, snac->id))) { |
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369 | do_error_dialog(sess->aux_data, "received response to unknown request!", "Gaim"); |
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370 | return 0; |
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371 | } |
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372 | |
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373 | if (snac2->family != 0x000d) { |
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374 | do_error_dialog(sess->aux_data, "recieved response that maps to corrupt request!", "Gaim"); |
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375 | return 0; |
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376 | } |
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377 | |
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378 | /* |
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379 | * We now know what the original SNAC subtype was. |
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380 | */ |
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381 | if (snac2->type == 0x0002) /* request chat rights */ |
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382 | ret = parseinfo_perms(sess, mod, rx, snac, bs, snac2); |
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383 | else if (snac2->type == 0x0003) {} /* request exchange info */ |
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384 | else if (snac2->type == 0x0004) {} /* request room info */ |
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385 | else if (snac2->type == 0x0005) {} /* request more room info */ |
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386 | else if (snac2->type == 0x0006) {} /* request occupant list */ |
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387 | else if (snac2->type == 0x0007) {} /* search for a room */ |
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388 | else if (snac2->type == 0x0008) /* create room */ |
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389 | ret = parseinfo_create(sess, mod, rx, snac, bs, snac2); |
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390 | else |
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391 | do_error_dialog(sess->aux_data, "unknown request subtype", "Gaim"); |
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392 | |
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393 | if (snac2) |
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394 | g_free(snac2->data); |
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395 | g_free(snac2); |
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396 | |
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397 | return ret; |
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398 | } |
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399 | |
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400 | static int snachandler(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) |
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401 | { |
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402 | |
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403 | if (snac->subtype == 0x0009) |
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404 | return parseinfo(sess, mod, rx, snac, bs); |
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405 | |
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406 | return 0; |
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407 | } |
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408 | |
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409 | int chatnav_modfirst(aim_session_t *sess, aim_module_t *mod) |
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410 | { |
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411 | |
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412 | mod->family = 0x000d; |
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413 | mod->version = 0x0003; |
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414 | mod->toolid = 0x0010; |
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415 | mod->toolversion = 0x0629; |
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416 | mod->flags = 0; |
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417 | strncpy(mod->name, "chatnav", sizeof(mod->name)); |
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418 | mod->snachandler = snachandler; |
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419 | |
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420 | return 0; |
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421 | } |
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