1 | /* |
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2 | * aim_info.c |
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3 | * |
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4 | * The functions here are responsible for requesting and parsing information- |
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5 | * gathering SNACs. Or something like that. |
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6 | * |
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7 | */ |
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8 | |
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9 | #include <aim.h> |
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10 | #include "info.h" |
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11 | |
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12 | struct aim_priv_inforeq { |
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13 | char sn[MAXSNLEN + 1]; |
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14 | guint16 infotype; |
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15 | }; |
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16 | |
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17 | int aim_getinfo(aim_session_t *sess, aim_conn_t *conn, const char *sn, guint16 infotype) |
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18 | { |
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19 | struct aim_priv_inforeq privdata; |
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20 | aim_frame_t *fr; |
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21 | aim_snacid_t snacid; |
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22 | |
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23 | if (!sess || !conn || !sn) { |
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24 | return -EINVAL; |
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25 | } |
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26 | |
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27 | if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 12 + 1 + strlen(sn)))) { |
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28 | return -ENOMEM; |
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29 | } |
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30 | |
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31 | strncpy(privdata.sn, sn, sizeof(privdata.sn)); |
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32 | privdata.infotype = infotype; |
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33 | snacid = aim_cachesnac(sess, 0x0002, 0x0005, 0x0000, &privdata, sizeof(struct aim_priv_inforeq)); |
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34 | |
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35 | aim_putsnac(&fr->data, 0x0002, 0x0005, 0x0000, snacid); |
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36 | aimbs_put16(&fr->data, infotype); |
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37 | aimbs_put8(&fr->data, strlen(sn)); |
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38 | aimbs_putraw(&fr->data, (guint8 *) sn, strlen(sn)); |
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39 | |
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40 | aim_tx_enqueue(sess, fr); |
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41 | |
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42 | return 0; |
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43 | } |
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44 | |
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45 | /* |
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46 | * Capability blocks. |
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47 | * |
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48 | * These are CLSIDs. They should actually be of the form: |
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49 | * |
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50 | * {0x0946134b, 0x4c7f, 0x11d1, |
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51 | * {0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}}, |
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52 | * |
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53 | * But, eh. |
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54 | */ |
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55 | static const struct { |
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56 | guint32 flag; |
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57 | guint8 data[16]; |
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58 | } aim_caps[] = { |
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59 | |
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60 | /* |
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61 | * Chat is oddball. |
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62 | */ |
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63 | { AIM_CAPS_CHAT, |
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64 | { 0x74, 0x8f, 0x24, 0x20, 0x62, 0x87, 0x11, 0xd1, |
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65 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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66 | |
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67 | /* |
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68 | * These are mostly in order. |
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69 | */ |
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70 | { AIM_CAPS_VOICE, |
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71 | { 0x09, 0x46, 0x13, 0x41, 0x4c, 0x7f, 0x11, 0xd1, |
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72 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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73 | |
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74 | { AIM_CAPS_SENDFILE, |
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75 | { 0x09, 0x46, 0x13, 0x43, 0x4c, 0x7f, 0x11, 0xd1, |
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76 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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77 | |
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78 | /* |
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79 | * Advertised by the EveryBuddy client. |
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80 | */ |
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81 | { AIM_CAPS_ICQ, |
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82 | { 0x09, 0x46, 0x13, 0x44, 0x4c, 0x7f, 0x11, 0xd1, |
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83 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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84 | |
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85 | { AIM_CAPS_IMIMAGE, |
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86 | { 0x09, 0x46, 0x13, 0x45, 0x4c, 0x7f, 0x11, 0xd1, |
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87 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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88 | |
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89 | { AIM_CAPS_BUDDYICON, |
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90 | { 0x09, 0x46, 0x13, 0x46, 0x4c, 0x7f, 0x11, 0xd1, |
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91 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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92 | |
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93 | { AIM_CAPS_SAVESTOCKS, |
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94 | { 0x09, 0x46, 0x13, 0x47, 0x4c, 0x7f, 0x11, 0xd1, |
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95 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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96 | |
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97 | { AIM_CAPS_GETFILE, |
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98 | { 0x09, 0x46, 0x13, 0x48, 0x4c, 0x7f, 0x11, 0xd1, |
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99 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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100 | |
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101 | /* |
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102 | * Client supports channel 2 extended, TLV(0x2711) based messages. |
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103 | * Currently used only by ICQ clients. ICQ clients and clones use this GUID |
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104 | * as message format sign. Trillian client use another GUID in channel 2 |
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105 | * messages to implement its own message format (trillian doesn't use |
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106 | * TLV(x2711) in SecureIM channel 2 messages!). |
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107 | */ |
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108 | { AIM_CAPS_ICQSERVERRELAY, |
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109 | { 0x09, 0x46, 0x13, 0x49, 0x4c, 0x7f, 0x11, 0xd1, |
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110 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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111 | |
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112 | /* |
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113 | * Indeed, there are two of these. The former appears to be correct, |
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114 | * but in some versions of winaim, the second one is set. Either they |
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115 | * forgot to fix endianness, or they made a typo. It really doesn't |
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116 | * matter which. |
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117 | */ |
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118 | { AIM_CAPS_GAMES, |
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119 | { 0x09, 0x46, 0x13, 0x4a, 0x4c, 0x7f, 0x11, 0xd1, |
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120 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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121 | { AIM_CAPS_GAMES2, |
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122 | { 0x09, 0x46, 0x13, 0x4a, 0x4c, 0x7f, 0x11, 0xd1, |
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123 | 0x22, 0x82, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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124 | |
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125 | { AIM_CAPS_SENDBUDDYLIST, |
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126 | { 0x09, 0x46, 0x13, 0x4b, 0x4c, 0x7f, 0x11, 0xd1, |
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127 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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128 | |
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129 | { AIM_CAPS_UTF8, |
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130 | { 0x09, 0x46, 0x13, 0x4E, 0x4C, 0x7F, 0x11, 0xD1, |
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131 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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132 | |
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133 | { AIM_CAPS_ICQRTF, |
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134 | { 0x97, 0xb1, 0x27, 0x51, 0x24, 0x3c, 0x43, 0x34, |
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135 | 0xad, 0x22, 0xd6, 0xab, 0xf7, 0x3f, 0x14, 0x92 } }, |
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136 | |
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137 | { AIM_CAPS_ICQUNKNOWN, |
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138 | { 0x2e, 0x7a, 0x64, 0x75, 0xfa, 0xdf, 0x4d, 0xc8, |
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139 | 0x88, 0x6f, 0xea, 0x35, 0x95, 0xfd, 0xb6, 0xdf } }, |
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140 | |
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141 | { AIM_CAPS_EMPTY, |
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142 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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143 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }, |
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144 | |
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145 | { AIM_CAPS_TRILLIANCRYPT, |
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146 | { 0xf2, 0xe7, 0xc7, 0xf4, 0xfe, 0xad, 0x4d, 0xfb, |
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147 | 0xb2, 0x35, 0x36, 0x79, 0x8b, 0xdf, 0x00, 0x00 } }, |
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148 | |
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149 | { AIM_CAPS_APINFO, |
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150 | { 0xAA, 0x4A, 0x32, 0xB5, 0xF8, 0x84, 0x48, 0xc6, |
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151 | 0xA3, 0xD7, 0x8C, 0x50, 0x97, 0x19, 0xFD, 0x5B } }, |
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152 | |
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153 | { AIM_CAPS_INTEROP, |
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154 | { 0x09, 0x46, 0x13, 0x4d, 0x4c, 0x7f, 0x11, 0xd1, |
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155 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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156 | |
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157 | { AIM_CAPS_ICHAT, |
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158 | { 0x09, 0x46, 0x00, 0x00, 0x4c, 0x7f, 0x11, 0xd1, |
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159 | 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00 } }, |
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160 | |
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161 | { AIM_CAPS_LAST } |
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162 | }; |
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163 | |
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164 | /* |
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165 | * This still takes a length parameter even with a bstream because capabilities |
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166 | * are not naturally bounded. |
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167 | * |
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168 | */ |
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169 | guint32 aim_getcap(aim_session_t *sess, aim_bstream_t *bs, int len) |
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170 | { |
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171 | guint32 flags = 0; |
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172 | int offset; |
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173 | |
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174 | for (offset = 0; aim_bstream_empty(bs) && (offset < len); offset += 0x10) { |
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175 | guint8 *cap; |
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176 | int i, identified; |
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177 | |
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178 | cap = aimbs_getraw(bs, 0x10); |
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179 | |
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180 | for (i = 0, identified = 0; !(aim_caps[i].flag & AIM_CAPS_LAST); i++) { |
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181 | |
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182 | if (memcmp(&aim_caps[i].data, cap, 0x10) == 0) { |
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183 | flags |= aim_caps[i].flag; |
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184 | identified++; |
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185 | break; /* should only match once... */ |
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186 | |
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187 | } |
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188 | } |
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189 | |
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190 | if (!identified) { |
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191 | /*FIXME*/ |
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192 | /*REMOVEME :-) |
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193 | g_strdup_printf("unknown capability: {%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x}\n", |
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194 | cap[0], cap[1], cap[2], cap[3], |
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195 | cap[4], cap[5], |
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196 | cap[6], cap[7], |
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197 | cap[8], cap[9], |
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198 | cap[10], cap[11], cap[12], cap[13], |
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199 | cap[14], cap[15]); |
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200 | */ |
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201 | } |
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202 | |
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203 | g_free(cap); |
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204 | } |
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205 | |
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206 | return flags; |
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207 | } |
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208 | |
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209 | int aim_putcap(aim_bstream_t *bs, guint32 caps) |
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210 | { |
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211 | int i; |
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212 | |
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213 | if (!bs) { |
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214 | return -EINVAL; |
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215 | } |
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216 | |
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217 | for (i = 0; aim_bstream_empty(bs); i++) { |
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218 | |
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219 | if (aim_caps[i].flag == AIM_CAPS_LAST) { |
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220 | break; |
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221 | } |
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222 | |
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223 | if (caps & aim_caps[i].flag) { |
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224 | aimbs_putraw(bs, aim_caps[i].data, 0x10); |
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225 | } |
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226 | |
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227 | } |
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228 | |
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229 | return 0; |
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230 | } |
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231 | |
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232 | /* |
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233 | * AIM is fairly regular about providing user info. This is a generic |
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234 | * routine to extract it in its standard form. |
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235 | */ |
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236 | int aim_extractuserinfo(aim_session_t *sess, aim_bstream_t *bs, aim_userinfo_t *outinfo) |
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237 | { |
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238 | int curtlv, tlvcnt; |
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239 | guint8 snlen; |
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240 | |
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241 | if (!bs || !outinfo) { |
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242 | return -EINVAL; |
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243 | } |
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244 | |
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245 | /* Clear out old data first */ |
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246 | memset(outinfo, 0x00, sizeof(aim_userinfo_t)); |
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247 | |
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248 | /* |
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249 | * Screen name. Stored as an unterminated string prepended with a |
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250 | * byte containing its length. |
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251 | */ |
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252 | snlen = aimbs_get8(bs); |
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253 | aimbs_getrawbuf(bs, (guint8 *) outinfo->sn, snlen); |
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254 | |
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255 | /* |
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256 | * Warning Level. Stored as an unsigned short. |
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257 | */ |
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258 | outinfo->warnlevel = aimbs_get16(bs); |
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259 | |
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260 | /* |
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261 | * TLV Count. Unsigned short representing the number of |
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262 | * Type-Length-Value triples that follow. |
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263 | */ |
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264 | tlvcnt = aimbs_get16(bs); |
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265 | |
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266 | /* |
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267 | * Parse out the Type-Length-Value triples as they're found. |
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268 | */ |
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269 | for (curtlv = 0; curtlv < tlvcnt; curtlv++) { |
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270 | int endpos; |
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271 | guint16 type, length; |
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272 | |
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273 | type = aimbs_get16(bs); |
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274 | length = aimbs_get16(bs); |
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275 | |
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276 | endpos = aim_bstream_curpos(bs) + length; |
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277 | |
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278 | if (type == 0x0001) { |
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279 | /* |
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280 | * Type = 0x0001: User flags |
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281 | * |
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282 | * Specified as any of the following ORed together: |
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283 | * 0x0001 Trial (user less than 60days) |
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284 | * 0x0002 Unknown bit 2 |
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285 | * 0x0004 AOL Main Service user |
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286 | * 0x0008 Unknown bit 4 |
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287 | * 0x0010 Free (AIM) user |
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288 | * 0x0020 Away |
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289 | * 0x0400 ActiveBuddy |
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290 | * |
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291 | */ |
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292 | outinfo->flags = aimbs_get16(bs); |
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293 | outinfo->present |= AIM_USERINFO_PRESENT_FLAGS; |
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294 | |
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295 | } else if (type == 0x0002) { |
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296 | /* |
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297 | * Type = 0x0002: Member-Since date. |
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298 | * |
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299 | * The time/date that the user originally registered for |
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300 | * the service, stored in time_t format. |
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301 | */ |
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302 | outinfo->membersince = aimbs_get32(bs); |
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303 | outinfo->present |= AIM_USERINFO_PRESENT_MEMBERSINCE; |
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304 | |
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305 | } else if (type == 0x0003) { |
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306 | /* |
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307 | * Type = 0x0003: On-Since date. |
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308 | * |
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309 | * The time/date that the user started their current |
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310 | * session, stored in time_t format. |
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311 | */ |
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312 | outinfo->onlinesince = aimbs_get32(bs); |
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313 | outinfo->present |= AIM_USERINFO_PRESENT_ONLINESINCE; |
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314 | |
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315 | } else if (type == 0x0004) { |
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316 | /* |
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317 | * Type = 0x0004: Idle time. |
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318 | * |
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319 | * Number of seconds since the user actively used the |
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320 | * service. |
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321 | * |
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322 | * Note that the client tells the server when to start |
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323 | * counting idle times, so this may or may not be |
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324 | * related to reality. |
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325 | */ |
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326 | outinfo->idletime = aimbs_get16(bs); |
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327 | outinfo->present |= AIM_USERINFO_PRESENT_IDLE; |
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328 | |
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329 | } else if (type == 0x0006) { |
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330 | /* |
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331 | * Type = 0x0006: ICQ Online Status |
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332 | * |
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333 | * ICQ's Away/DND/etc "enriched" status. Some decoding |
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334 | * of values done by Scott <darkagl@pcnet.com> |
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335 | */ |
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336 | aimbs_get16(bs); |
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337 | outinfo->icqinfo.status = aimbs_get16(bs); |
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338 | outinfo->present |= AIM_USERINFO_PRESENT_ICQEXTSTATUS; |
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339 | |
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340 | } else if (type == 0x000a) { |
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341 | /* |
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342 | * Type = 0x000a |
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343 | * |
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344 | * ICQ User IP Address. |
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345 | * Ahh, the joy of ICQ security. |
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346 | */ |
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347 | outinfo->icqinfo.ipaddr = aimbs_get32(bs); |
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348 | outinfo->present |= AIM_USERINFO_PRESENT_ICQIPADDR; |
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349 | |
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350 | } else if (type == 0x000c) { |
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351 | /* |
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352 | * Type = 0x000c |
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353 | * |
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354 | * random crap containing the IP address, |
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355 | * apparently a port number, and some Other Stuff. |
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356 | * |
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357 | */ |
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358 | aimbs_getrawbuf(bs, outinfo->icqinfo.crap, 0x25); |
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359 | outinfo->present |= AIM_USERINFO_PRESENT_ICQDATA; |
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360 | |
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361 | } else if (type == 0x000d) { |
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362 | /* |
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363 | * Type = 0x000d |
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364 | * |
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365 | * Capability information. |
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366 | * |
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367 | */ |
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368 | outinfo->capabilities = aim_getcap(sess, bs, length); |
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369 | outinfo->present |= AIM_USERINFO_PRESENT_CAPABILITIES; |
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370 | |
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371 | } else if (type == 0x000e) { |
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372 | /* |
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373 | * Type = 0x000e |
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374 | * |
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375 | * Unknown. Always of zero length, and always only |
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376 | * on AOL users. |
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377 | * |
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378 | * Ignore. |
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379 | * |
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380 | */ |
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381 | |
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382 | } else if ((type == 0x000f) || (type == 0x0010)) { |
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383 | /* |
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384 | * Type = 0x000f: Session Length. (AIM) |
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385 | * Type = 0x0010: Session Length. (AOL) |
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386 | * |
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387 | * The duration, in seconds, of the user's current |
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388 | * session. |
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389 | * |
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390 | * Which TLV type this comes in depends on the |
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391 | * service the user is using (AIM or AOL). |
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392 | * |
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393 | */ |
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394 | outinfo->sessionlen = aimbs_get32(bs); |
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395 | outinfo->present |= AIM_USERINFO_PRESENT_SESSIONLEN; |
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396 | |
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397 | } else { |
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398 | |
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399 | /* |
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400 | * Reaching here indicates that either AOL has |
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401 | * added yet another TLV for us to deal with, |
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402 | * or the parsing has gone Terribly Wrong. |
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403 | * |
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404 | * Either way, inform the owner and attempt |
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405 | * recovery. |
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406 | * |
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407 | */ |
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408 | #ifdef DEBUG |
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409 | // imcb_error(sess->aux_data, G_STRLOC); |
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410 | #endif |
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411 | |
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412 | } |
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413 | |
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414 | /* Save ourselves. */ |
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415 | aim_bstream_setpos(bs, endpos); |
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416 | } |
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417 | |
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418 | return 0; |
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419 | } |
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420 | |
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421 | /* |
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422 | * Normally contains: |
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423 | * t(0001) - short containing max profile length (value = 1024) |
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424 | * t(0002) - short - unknown (value = 16) [max MIME type length?] |
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425 | * t(0003) - short - unknown (value = 10) |
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426 | * t(0004) - short - unknown (value = 2048) [ICQ only?] |
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427 | */ |
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428 | static int rights(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) |
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429 | { |
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430 | aim_tlvlist_t *tlvlist; |
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431 | aim_rxcallback_t userfunc; |
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432 | int ret = 0; |
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433 | guint16 maxsiglen = 0; |
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434 | |
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435 | tlvlist = aim_readtlvchain(bs); |
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436 | |
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437 | if (aim_gettlv(tlvlist, 0x0001, 1)) { |
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438 | maxsiglen = aim_gettlv16(tlvlist, 0x0001, 1); |
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439 | } |
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440 | |
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441 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) { |
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442 | ret = userfunc(sess, rx, maxsiglen); |
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443 | } |
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444 | |
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445 | aim_freetlvchain(&tlvlist); |
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446 | |
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447 | return ret; |
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448 | } |
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449 | |
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450 | static int userinfo(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) |
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451 | { |
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452 | aim_userinfo_t userinfo; |
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453 | char *text_encoding = NULL, *text = NULL; |
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454 | guint16 text_length = 0; |
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455 | aim_rxcallback_t userfunc; |
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456 | aim_tlvlist_t *tlvlist; |
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457 | aim_tlv_t *tlv; |
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458 | aim_snac_t *origsnac = NULL; |
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459 | struct aim_priv_inforeq *inforeq; |
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460 | int ret = 0; |
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461 | |
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462 | origsnac = aim_remsnac(sess, snac->id); |
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463 | |
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464 | if (!origsnac || !origsnac->data) { |
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465 | imcb_error(sess->aux_data, "major problem: no snac stored!"); |
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466 | return 0; |
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467 | } |
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468 | |
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469 | inforeq = (struct aim_priv_inforeq *) origsnac->data; |
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470 | |
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471 | if ((inforeq->infotype != AIM_GETINFO_GENERALINFO) && |
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472 | (inforeq->infotype != AIM_GETINFO_AWAYMESSAGE) && |
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473 | (inforeq->infotype != AIM_GETINFO_CAPABILITIES)) { |
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474 | imcb_error(sess->aux_data, "unknown infotype in request!"); |
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475 | return 0; |
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476 | } |
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477 | |
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478 | aim_extractuserinfo(sess, bs, &userinfo); |
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479 | |
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480 | tlvlist = aim_readtlvchain(bs); |
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481 | |
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482 | /* |
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483 | * Depending on what informational text was requested, different |
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484 | * TLVs will appear here. |
---|
485 | * |
---|
486 | * Profile will be 1 and 2, away message will be 3 and 4, caps |
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487 | * will be 5. |
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488 | */ |
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489 | if (inforeq->infotype == AIM_GETINFO_GENERALINFO) { |
---|
490 | text_encoding = aim_gettlv_str(tlvlist, 0x0001, 1); |
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491 | if ((tlv = aim_gettlv(tlvlist, 0x0002, 1))) { |
---|
492 | text = g_new0(char, tlv->length); |
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493 | memcpy(text, tlv->value, tlv->length); |
---|
494 | text_length = tlv->length; |
---|
495 | } |
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496 | } else if (inforeq->infotype == AIM_GETINFO_AWAYMESSAGE) { |
---|
497 | text_encoding = aim_gettlv_str(tlvlist, 0x0003, 1); |
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498 | if ((tlv = aim_gettlv(tlvlist, 0x0004, 1))) { |
---|
499 | text = g_new0(char, tlv->length); |
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500 | memcpy(text, tlv->value, tlv->length); |
---|
501 | text_length = tlv->length; |
---|
502 | } |
---|
503 | } else if (inforeq->infotype == AIM_GETINFO_CAPABILITIES) { |
---|
504 | aim_tlv_t *ct; |
---|
505 | |
---|
506 | if ((ct = aim_gettlv(tlvlist, 0x0005, 1))) { |
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507 | aim_bstream_t cbs; |
---|
508 | |
---|
509 | aim_bstream_init(&cbs, ct->value, ct->length); |
---|
510 | |
---|
511 | userinfo.capabilities = aim_getcap(sess, &cbs, ct->length); |
---|
512 | userinfo.present = AIM_USERINFO_PRESENT_CAPABILITIES; |
---|
513 | } |
---|
514 | } |
---|
515 | |
---|
516 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) { |
---|
517 | ret = userfunc(sess, rx, &userinfo, inforeq->infotype, text_encoding, text, text_length); |
---|
518 | } |
---|
519 | |
---|
520 | g_free(text_encoding); |
---|
521 | g_free(text); |
---|
522 | |
---|
523 | aim_freetlvchain(&tlvlist); |
---|
524 | |
---|
525 | if (origsnac) { |
---|
526 | g_free(origsnac->data); |
---|
527 | } |
---|
528 | g_free(origsnac); |
---|
529 | |
---|
530 | return ret; |
---|
531 | } |
---|
532 | |
---|
533 | static int snachandler(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) |
---|
534 | { |
---|
535 | |
---|
536 | if (snac->subtype == 0x0003) { |
---|
537 | return rights(sess, mod, rx, snac, bs); |
---|
538 | } else if (snac->subtype == 0x0006) { |
---|
539 | return userinfo(sess, mod, rx, snac, bs); |
---|
540 | } |
---|
541 | |
---|
542 | return 0; |
---|
543 | } |
---|
544 | |
---|
545 | int locate_modfirst(aim_session_t *sess, aim_module_t *mod) |
---|
546 | { |
---|
547 | |
---|
548 | mod->family = 0x0002; |
---|
549 | mod->version = 0x0001; |
---|
550 | mod->toolid = 0x0110; |
---|
551 | mod->toolversion = 0x0629; |
---|
552 | mod->flags = 0; |
---|
553 | strncpy(mod->name, "locate", sizeof(mod->name)); |
---|
554 | mod->snachandler = snachandler; |
---|
555 | |
---|
556 | return 0; |
---|
557 | } |
---|