1 | /* |
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2 | * Deals with the authorizer (group 0x0017=23, and old-style non-SNAC login). |
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3 | * |
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4 | */ |
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5 | |
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6 | #include <aim.h> |
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7 | |
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8 | #include "md5.h" |
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9 | |
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10 | /* |
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11 | * This just pushes the passed cookie onto the passed connection, without |
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12 | * the SNAC header or any of that. |
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13 | * |
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14 | * Very commonly used, as every connection except auth will require this to |
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15 | * be the first thing you send. |
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16 | * |
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17 | */ |
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18 | int aim_sendcookie(aim_session_t *sess, aim_conn_t *conn, const guint8 *chipsahoy) |
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19 | { |
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20 | aim_frame_t *fr; |
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21 | aim_tlvlist_t *tl = NULL; |
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22 | |
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23 | if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x0001, 4 + 2 + 2 + AIM_COOKIELEN))) { |
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24 | return -ENOMEM; |
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25 | } |
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26 | |
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27 | aimbs_put32(&fr->data, 0x00000001); |
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28 | aim_addtlvtochain_raw(&tl, 0x0006, AIM_COOKIELEN, chipsahoy); |
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29 | aim_writetlvchain(&fr->data, &tl); |
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30 | aim_freetlvchain(&tl); |
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31 | |
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32 | aim_tx_enqueue(sess, fr); |
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33 | |
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34 | return 0; |
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35 | } |
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36 | |
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37 | /* |
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38 | * Normally the FLAP version is sent as the first few bytes of the cookie, |
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39 | * meaning you generally never call this. |
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40 | * |
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41 | * But there are times when something might want it separate. Specifically, |
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42 | * libfaim sends this internally when doing SNAC login. |
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43 | * |
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44 | */ |
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45 | int aim_sendflapver(aim_session_t *sess, aim_conn_t *conn) |
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46 | { |
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47 | aim_frame_t *fr; |
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48 | |
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49 | if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x01, 4))) { |
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50 | return -ENOMEM; |
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51 | } |
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52 | |
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53 | aimbs_put32(&fr->data, 0x00000001); |
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54 | |
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55 | aim_tx_enqueue(sess, fr); |
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56 | |
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57 | return 0; |
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58 | } |
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59 | |
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60 | /* |
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61 | * In AIM 3.5 protocol, the first stage of login is to request login from the |
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62 | * Authorizer, passing it the screen name for verification. If the name is |
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63 | * invalid, a 0017/0003 is spit back, with the standard error contents. If |
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64 | * valid, a 0017/0007 comes back, which is the signal to send it the main |
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65 | * login command (0017/0002). |
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66 | * |
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67 | */ |
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68 | int aim_request_login(aim_session_t *sess, aim_conn_t *conn, const char *sn) |
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69 | { |
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70 | aim_frame_t *fr; |
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71 | aim_snacid_t snacid; |
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72 | aim_tlvlist_t *tl = NULL; |
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73 | |
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74 | if (!sess || !conn || !sn) { |
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75 | return -EINVAL; |
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76 | } |
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77 | |
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78 | sess->flags |= AIM_SESS_FLAGS_SNACLOGIN; |
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79 | |
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80 | aim_sendflapver(sess, conn); |
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81 | |
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82 | if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 10 + 2 + 2 + strlen(sn)))) { |
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83 | return -ENOMEM; |
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84 | } |
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85 | |
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86 | snacid = aim_cachesnac(sess, 0x0017, 0x0006, 0x0000, NULL, 0); |
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87 | aim_putsnac(&fr->data, 0x0017, 0x0006, 0x0000, snacid); |
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88 | |
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89 | aim_addtlvtochain_raw(&tl, 0x0001, strlen(sn), (guint8 *) sn); |
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90 | aim_writetlvchain(&fr->data, &tl); |
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91 | aim_freetlvchain(&tl); |
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92 | |
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93 | aim_tx_enqueue(sess, fr); |
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94 | |
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95 | return 0; |
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96 | } |
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97 | |
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98 | /* |
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99 | * send_login(int socket, char *sn, char *password) |
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100 | * |
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101 | * This is the initial login request packet. |
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102 | * |
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103 | * NOTE!! If you want/need to make use of the aim_sendmemblock() function, |
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104 | * then the client information you send here must exactly match the |
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105 | * executable that you're pulling the data from. |
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106 | * |
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107 | * WinAIM 4.8.2540 |
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108 | * clientstring = "AOL Instant Messenger (SM), version 4.8.2540/WIN32" |
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109 | * clientid = 0x0109 |
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110 | * major = 0x0004 |
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111 | * minor = 0x0008 |
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112 | * point = 0x0000 |
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113 | * build = 0x09ec |
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114 | * t(0x0014) = 0x000000af |
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115 | * t(0x004a) = 0x01 |
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116 | * |
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117 | * WinAIM 4.3.2188: |
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118 | * clientstring = "AOL Instant Messenger (SM), version 4.3.2188/WIN32" |
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119 | * clientid = 0x0109 |
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120 | * major = 0x0400 |
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121 | * minor = 0x0003 |
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122 | * point = 0x0000 |
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123 | * build = 0x088c |
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124 | * unknown = 0x00000086 |
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125 | * lang = "en" |
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126 | * country = "us" |
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127 | * unknown4a = 0x01 |
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128 | * |
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129 | * Latest WinAIM that libfaim can emulate without server-side buddylists: |
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130 | * clientstring = "AOL Instant Messenger (SM), version 4.1.2010/WIN32" |
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131 | * clientid = 0x0004 |
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132 | * major = 0x0004 |
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133 | * minor = 0x0001 |
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134 | * point = 0x0000 |
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135 | * build = 0x07da |
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136 | * unknown= 0x0000004b |
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137 | * |
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138 | * WinAIM 3.5.1670: |
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139 | * clientstring = "AOL Instant Messenger (SM), version 3.5.1670/WIN32" |
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140 | * clientid = 0x0004 |
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141 | * major = 0x0003 |
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142 | * minor = 0x0005 |
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143 | * point = 0x0000 |
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144 | * build = 0x0686 |
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145 | * unknown =0x0000002a |
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146 | * |
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147 | * Java AIM 1.1.19: |
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148 | * clientstring = "AOL Instant Messenger (TM) version 1.1.19 for Java built 03/24/98, freeMem 215871 totalMem 1048567, i686, Linus, #2 SMP Sun Feb 11 03:41:17 UTC 2001 2.4.1-ac9, IBM Corporation, 1.1.8, 45.3, Tue Mar 27 12:09:17 PST 2001" |
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149 | * clientid = 0x0001 |
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150 | * major = 0x0001 |
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151 | * minor = 0x0001 |
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152 | * point = (not sent) |
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153 | * build = 0x0013 |
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154 | * unknown= (not sent) |
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155 | * |
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156 | * AIM for Linux 1.1.112: |
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157 | * clientstring = "AOL Instant Messenger (SM)" |
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158 | * clientid = 0x1d09 |
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159 | * major = 0x0001 |
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160 | * minor = 0x0001 |
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161 | * point = 0x0001 |
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162 | * build = 0x0070 |
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163 | * unknown= 0x0000008b |
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164 | * serverstore = 0x01 |
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165 | * |
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166 | */ |
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167 | int aim_send_login(aim_session_t *sess, aim_conn_t *conn, const char *sn, const char *password, |
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168 | struct client_info_s *ci, const char *key) |
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169 | { |
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170 | aim_frame_t *fr; |
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171 | aim_tlvlist_t *tl = NULL; |
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172 | guint8 digest[16]; |
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173 | aim_snacid_t snacid; |
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174 | |
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175 | if (!ci || !sn || !password) { |
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176 | return -EINVAL; |
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177 | } |
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178 | |
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179 | if (!(fr = aim_tx_new(sess, conn, AIM_FRAMETYPE_FLAP, 0x02, 1152))) { |
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180 | return -ENOMEM; |
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181 | } |
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182 | |
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183 | snacid = aim_cachesnac(sess, 0x0017, 0x0002, 0x0000, NULL, 0); |
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184 | aim_putsnac(&fr->data, 0x0017, 0x0002, 0x0000, snacid); |
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185 | |
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186 | aim_addtlvtochain_raw(&tl, 0x0001, strlen(sn), (guint8 *) sn); |
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187 | |
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188 | aim_encode_password_md5(password, key, digest); |
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189 | aim_addtlvtochain_raw(&tl, 0x0025, 16, digest); |
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190 | |
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191 | /* |
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192 | * Newer versions of winaim have an empty type x004c TLV here. |
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193 | */ |
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194 | |
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195 | if (ci->clientstring) { |
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196 | aim_addtlvtochain_raw(&tl, 0x0003, strlen(ci->clientstring), (guint8 *) ci->clientstring); |
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197 | } |
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198 | aim_addtlvtochain16(&tl, 0x0016, (guint16) ci->clientid); |
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199 | aim_addtlvtochain16(&tl, 0x0017, (guint16) ci->major); |
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200 | aim_addtlvtochain16(&tl, 0x0018, (guint16) ci->minor); |
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201 | aim_addtlvtochain16(&tl, 0x0019, (guint16) ci->point); |
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202 | aim_addtlvtochain16(&tl, 0x001a, (guint16) ci->build); |
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203 | aim_addtlvtochain_raw(&tl, 0x000e, strlen(ci->country), (guint8 *) ci->country); |
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204 | aim_addtlvtochain_raw(&tl, 0x000f, strlen(ci->lang), (guint8 *) ci->lang); |
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205 | |
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206 | /* |
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207 | * If set, old-fashioned buddy lists will not work. You will need |
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208 | * to use SSI. |
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209 | */ |
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210 | aim_addtlvtochain8(&tl, 0x004a, 0x01); |
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211 | |
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212 | aim_writetlvchain(&fr->data, &tl); |
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213 | |
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214 | aim_freetlvchain(&tl); |
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215 | |
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216 | aim_tx_enqueue(sess, fr); |
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217 | |
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218 | return 0; |
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219 | } |
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220 | |
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221 | int aim_encode_password_md5(const char *password, const char *key, guint8 *digest) |
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222 | { |
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223 | md5_state_t state; |
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224 | |
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225 | md5_init(&state); |
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226 | md5_append(&state, (const md5_byte_t *) key, strlen(key)); |
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227 | md5_append(&state, (const md5_byte_t *) password, strlen(password)); |
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228 | md5_append(&state, (const md5_byte_t *) AIM_MD5_STRING, strlen(AIM_MD5_STRING)); |
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229 | md5_finish(&state, (md5_byte_t *) digest); |
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230 | |
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231 | return 0; |
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232 | } |
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233 | |
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234 | /* |
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235 | * This is sent back as a general response to the login command. |
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236 | * It can be either an error or a success, depending on the |
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237 | * precense of certain TLVs. |
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238 | * |
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239 | * The client should check the value passed as errorcode. If |
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240 | * its nonzero, there was an error. |
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241 | * |
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242 | */ |
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243 | static int parse(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) |
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244 | { |
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245 | aim_tlvlist_t *tlvlist; |
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246 | aim_rxcallback_t userfunc; |
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247 | struct aim_authresp_info info; |
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248 | int ret = 0; |
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249 | |
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250 | memset(&info, 0, sizeof(info)); |
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251 | |
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252 | /* |
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253 | * Read block of TLVs. All further data is derived |
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254 | * from what is parsed here. |
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255 | */ |
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256 | tlvlist = aim_readtlvchain(bs); |
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257 | |
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258 | /* |
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259 | * No matter what, we should have a screen name. |
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260 | */ |
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261 | memset(sess->sn, 0, sizeof(sess->sn)); |
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262 | if (aim_gettlv(tlvlist, 0x0001, 1)) { |
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263 | info.sn = aim_gettlv_str(tlvlist, 0x0001, 1); |
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264 | strncpy(sess->sn, info.sn, sizeof(sess->sn)); |
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265 | } |
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266 | |
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267 | /* |
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268 | * Check for an error code. If so, we should also |
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269 | * have an error url. |
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270 | */ |
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271 | if (aim_gettlv(tlvlist, 0x0008, 1)) { |
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272 | info.errorcode = aim_gettlv16(tlvlist, 0x0008, 1); |
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273 | } |
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274 | if (aim_gettlv(tlvlist, 0x0004, 1)) { |
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275 | info.errorurl = aim_gettlv_str(tlvlist, 0x0004, 1); |
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276 | } |
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277 | |
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278 | /* |
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279 | * BOS server address. |
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280 | */ |
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281 | if (aim_gettlv(tlvlist, 0x0005, 1)) { |
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282 | info.bosip = aim_gettlv_str(tlvlist, 0x0005, 1); |
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283 | } |
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284 | |
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285 | /* |
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286 | * Authorization cookie. |
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287 | */ |
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288 | if (aim_gettlv(tlvlist, 0x0006, 1)) { |
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289 | aim_tlv_t *tmptlv; |
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290 | |
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291 | tmptlv = aim_gettlv(tlvlist, 0x0006, 1); |
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292 | |
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293 | info.cookie = tmptlv->value; |
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294 | } |
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295 | |
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296 | /* |
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297 | * The email address attached to this account |
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298 | * Not available for ICQ logins. |
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299 | */ |
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300 | if (aim_gettlv(tlvlist, 0x0011, 1)) { |
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301 | info.email = aim_gettlv_str(tlvlist, 0x0011, 1); |
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302 | } |
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303 | |
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304 | /* |
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305 | * The registration status. (Not real sure what it means.) |
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306 | * Not available for ICQ logins. |
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307 | * |
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308 | * 1 = No disclosure |
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309 | * 2 = Limited disclosure |
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310 | * 3 = Full disclosure |
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311 | * |
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312 | * This has to do with whether your email address is available |
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313 | * to other users or not. AFAIK, this feature is no longer used. |
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314 | * |
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315 | */ |
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316 | if (aim_gettlv(tlvlist, 0x0013, 1)) { |
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317 | info.regstatus = aim_gettlv16(tlvlist, 0x0013, 1); |
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318 | } |
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319 | |
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320 | if (aim_gettlv(tlvlist, 0x0040, 1)) { |
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321 | info.latestbeta.build = aim_gettlv32(tlvlist, 0x0040, 1); |
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322 | } |
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323 | if (aim_gettlv(tlvlist, 0x0041, 1)) { |
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324 | info.latestbeta.url = aim_gettlv_str(tlvlist, 0x0041, 1); |
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325 | } |
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326 | if (aim_gettlv(tlvlist, 0x0042, 1)) { |
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327 | info.latestbeta.info = aim_gettlv_str(tlvlist, 0x0042, 1); |
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328 | } |
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329 | if (aim_gettlv(tlvlist, 0x0043, 1)) { |
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330 | info.latestbeta.name = aim_gettlv_str(tlvlist, 0x0043, 1); |
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331 | } |
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332 | if (aim_gettlv(tlvlist, 0x0048, 1)) { |
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333 | ; /* no idea what this is */ |
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334 | |
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335 | } |
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336 | if (aim_gettlv(tlvlist, 0x0044, 1)) { |
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337 | info.latestrelease.build = aim_gettlv32(tlvlist, 0x0044, 1); |
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338 | } |
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339 | if (aim_gettlv(tlvlist, 0x0045, 1)) { |
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340 | info.latestrelease.url = aim_gettlv_str(tlvlist, 0x0045, 1); |
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341 | } |
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342 | if (aim_gettlv(tlvlist, 0x0046, 1)) { |
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343 | info.latestrelease.info = aim_gettlv_str(tlvlist, 0x0046, 1); |
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344 | } |
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345 | if (aim_gettlv(tlvlist, 0x0047, 1)) { |
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346 | info.latestrelease.name = aim_gettlv_str(tlvlist, 0x0047, 1); |
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347 | } |
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348 | if (aim_gettlv(tlvlist, 0x0049, 1)) { |
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349 | ; /* no idea what this is */ |
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350 | |
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351 | |
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352 | } |
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353 | if ((userfunc = aim_callhandler(sess, rx->conn, snac ? snac->family : 0x0017, snac ? snac->subtype : 0x0003))) { |
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354 | ret = userfunc(sess, rx, &info); |
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355 | } |
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356 | |
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357 | g_free(info.sn); |
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358 | g_free(info.bosip); |
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359 | g_free(info.errorurl); |
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360 | g_free(info.email); |
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361 | g_free(info.latestrelease.name); |
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362 | g_free(info.latestrelease.url); |
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363 | g_free(info.latestrelease.info); |
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364 | g_free(info.latestbeta.name); |
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365 | g_free(info.latestbeta.url); |
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366 | g_free(info.latestbeta.info); |
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367 | |
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368 | aim_freetlvchain(&tlvlist); |
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369 | |
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370 | return ret; |
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371 | } |
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372 | |
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373 | /* |
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374 | * Middle handler for 0017/0007 SNACs. Contains the auth key prefixed |
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375 | * by only its length in a two byte word. |
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376 | * |
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377 | * Calls the client, which should then use the value to call aim_send_login. |
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378 | * |
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379 | */ |
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380 | static int keyparse(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs) |
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381 | { |
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382 | int keylen, ret = 1; |
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383 | aim_rxcallback_t userfunc; |
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384 | char *keystr; |
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385 | |
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386 | keylen = aimbs_get16(bs); |
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387 | keystr = aimbs_getstr(bs, keylen); |
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388 | |
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389 | if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) { |
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390 | ret = userfunc(sess, rx, keystr); |
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391 | } |
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392 | |
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393 | g_free(keystr); |
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394 | |
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395 | return ret; |
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396 | } |
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397 | |
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398 | 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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399 | { |
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400 | |
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401 | if (snac->subtype == 0x0003) { |
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402 | return parse(sess, mod, rx, snac, bs); |
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403 | } else if (snac->subtype == 0x0007) { |
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404 | return keyparse(sess, mod, rx, snac, bs); |
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405 | } |
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406 | |
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407 | return 0; |
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408 | } |
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409 | |
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410 | int auth_modfirst(aim_session_t *sess, aim_module_t *mod) |
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411 | { |
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412 | |
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413 | mod->family = 0x0017; |
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414 | mod->version = 0x0000; |
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415 | mod->flags = 0; |
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416 | strncpy(mod->name, "auth", sizeof(mod->name)); |
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417 | mod->snachandler = snachandler; |
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418 | |
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419 | return 0; |
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420 | } |
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421 | |
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