1 | /**********************************************************************
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2 | *
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3 | * authenaction.cpp -- authenticating users
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4 | * Copyright (C) 1999 DigiLib Systems Limited, New Zealand
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5 | *
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6 | * PUT COPYRIGHT NOTICE HERE
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7 | *
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8 | * $Id: authenaction.cpp 363 1999-07-10 22:19:29Z rjmcnab $
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9 | *
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10 | *********************************************************************/
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11 |
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12 | /*
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13 | $Log$
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14 | Revision 1.1 1999/07/10 22:19:29 rjmcnab
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15 | Initial revision.
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16 |
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17 |
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18 | */
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19 |
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20 |
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21 | #include "authenaction.h"
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22 | #include "fileutil.h"
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23 | #include "cfgread.h"
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24 | #include "cgiutils.h"
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25 |
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26 |
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27 | /////////////////////////
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28 | // a few useful functions
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29 | /////////////////////////
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30 |
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31 |
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32 | // reads in the password file. It returns true if successful
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33 | // format is: username password status [groups]
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34 | static bool read_passwd (const text_t &passwd_filename, userinfo_tmap &userinfo) {
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35 | text_tarray passwdline;
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36 | userinfo_t thisuserinfo;
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37 |
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38 | userinfo.erase(userinfo.begin(), userinfo.end());
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39 |
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40 | char *cstr = passwd_filename.getcstr();
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41 | ifstream passwdin (cstr);
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42 | delete cstr;
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43 |
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44 | if (passwdin) {
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45 | while (read_cfg_line(passwdin, passwdline) >= 0) {
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46 | if (passwdline.size () >= 3) {
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47 | // get the information about the user
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48 | thisuserinfo.clear();
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49 | thisuserinfo.username = passwdline[0];
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50 | thisuserinfo.password = passwdline[1];
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51 | if (passwdline[2] == "enabled") thisuserinfo.status = userinfo_t::enabled;
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52 | else thisuserinfo.status = userinfo_t::disabled;
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53 | if (passwdline.size() >= 4) thisuserinfo.groups = passwdline[3];
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54 |
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55 | // insert the user information into the map
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56 | if (!thisuserinfo.username.empty()) {
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57 | userinfo[thisuserinfo.username] = thisuserinfo;
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58 | }
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59 | }
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60 | }
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61 |
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62 | passwdin.close ();
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63 | return true;
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64 | }
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65 |
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66 | return false;
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67 | }
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68 |
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69 | // returns true if the user was found, false otherwise
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70 | static bool get_user_info (const userinfo_tmap &userinfo, const text_t &username,
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71 | userinfo_t &thisuser) {
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72 | thisuser.clear();
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73 |
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74 | userinfo_tmap::const_iterator thisuser_here = userinfo.find (username);
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75 | if (thisuser_here != userinfo.end()) {
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76 | thisuser = (*thisuser_here).second;
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77 | return true;
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78 | }
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79 |
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80 | return false;
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81 | }
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82 |
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83 | // return true if the password matches, false if it doesn't
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84 | static bool check_passwd (const userinfo_t &thisuser, const text_t &password) {
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85 | if (!thisuser.username.empty() && !thisuser.password.empty() &&
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86 | !password.empty() && thisuser.password == password) return true;
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87 |
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88 | return false;
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89 | }
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90 |
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91 | static text_t generate_key (const text_t &/*username*/) {
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92 | return "key";
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93 | }
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94 |
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95 |
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96 | /////////////
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97 | // userinfo_t
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98 | /////////////
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99 |
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100 |
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101 | void userinfo_t::clear () {
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102 | username.clear();
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103 | password.clear();
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104 | status = invalid;
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105 | groups.clear();
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106 | }
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107 |
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108 |
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109 |
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110 | ///////////////
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111 | // authenaction
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112 | ///////////////
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113 |
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114 | authenaction::authenaction () {
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115 | // this action uses cgi variable "a"
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116 | cgiarginfo arg_ainfo;
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117 | arg_ainfo.shortname = "a";
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118 | arg_ainfo.longname = "action";
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119 | arg_ainfo.multiplechar = true;
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120 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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121 | arg_ainfo.argdefault = "a";
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122 | arg_ainfo.savedarginfo = cgiarginfo::must;
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123 | argsinfo.addarginfo (NULL, arg_ainfo);
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124 |
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125 | // "us"
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126 | arg_ainfo.shortname = "us";
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127 | arg_ainfo.longname = "user account status";
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128 | arg_ainfo.multiplechar = true;
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129 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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130 | arg_ainfo.argdefault = "invalid";
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131 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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132 | argsinfo.addarginfo (NULL, arg_ainfo);
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133 |
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134 | // "ug"
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135 | arg_ainfo.shortname = "ug";
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136 | arg_ainfo.longname = "user groups"; // comma seperated list
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137 | arg_ainfo.multiplechar = true;
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138 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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139 | arg_ainfo.argdefault = "";
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140 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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141 | argsinfo.addarginfo (NULL, arg_ainfo);
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142 |
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143 | // "un"
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144 | arg_ainfo.shortname = "un";
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145 | arg_ainfo.longname = "user name";
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146 | arg_ainfo.multiplechar = true;
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147 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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148 | arg_ainfo.argdefault = "";
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149 | arg_ainfo.savedarginfo = cgiarginfo::must;
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150 | argsinfo.addarginfo (NULL, arg_ainfo);
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151 |
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152 | // "pw"
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153 | arg_ainfo.shortname = "pw";
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154 | arg_ainfo.longname = "password";
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155 | arg_ainfo.multiplechar = true;
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156 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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157 | arg_ainfo.argdefault = "";
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158 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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159 | argsinfo.addarginfo (NULL, arg_ainfo);
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160 |
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161 | // "ky" - gives a specific user authentication for a
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162 | // limited amount of time
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163 | arg_ainfo.shortname = "ky";
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164 | arg_ainfo.longname = "user time key";
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165 | arg_ainfo.multiplechar = true;
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166 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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167 | arg_ainfo.argdefault = "";
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168 | arg_ainfo.savedarginfo = cgiarginfo::must;
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169 | argsinfo.addarginfo (NULL, arg_ainfo);
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170 |
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171 | // "ua" - ""=no, "1"=yes
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172 | arg_ainfo.shortname = "ua";
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173 | arg_ainfo.longname = "whether a user has been authenticated";
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174 | arg_ainfo.multiplechar = true;
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175 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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176 | arg_ainfo.argdefault = "";
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177 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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178 | argsinfo.addarginfo (NULL, arg_ainfo);
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179 |
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180 | // "er" - compressed arguments for the referer page
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181 | arg_ainfo.shortname = "er";
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182 | arg_ainfo.longname = "the compressed args of the refer page";
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183 | arg_ainfo.multiplechar = true;
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184 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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185 | arg_ainfo.argdefault = "";
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186 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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187 | argsinfo.addarginfo (NULL, arg_ainfo);
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188 |
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189 | // "uan" - whether user authentication is needed
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190 | arg_ainfo.shortname = "uan";
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191 | arg_ainfo.longname = "whether user authentication is needed";
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192 | arg_ainfo.multiplechar = true;
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193 | arg_ainfo.defaultstatus = cgiarginfo::weak;
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194 | arg_ainfo.argdefault = "";
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195 | arg_ainfo.savedarginfo = cgiarginfo::mustnot;
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196 | argsinfo.addarginfo (NULL, arg_ainfo);
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197 | }
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198 |
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199 | void authenaction::configure (const text_t &key, const text_tarray &cfgline) {
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200 | // get the password filename
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201 | if (cfgline.size() == 1) {
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202 | if (key == "passwdfile") passwdfile = cfgline[0];
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203 | else if (key == "gsdlhome" && passwdfile.empty()) {
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204 | passwdfile = filename_cat (cfgline[0], "etc", "passwd");
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205 | }
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206 | }
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207 |
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208 | action::configure (key, cfgline);
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209 | }
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210 |
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211 | bool authenaction::init (ostream &logout) {
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212 | outconvertclass text_t2ascii;
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213 |
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214 | // read in the password file
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215 | if (!read_passwd (passwdfile, userinfo)) {
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216 | logout << text_t2ascii << "Error: could not read in the password file "
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217 | << passwdfile << "\n";
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218 | return false;
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219 | }
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220 |
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221 | return action::init (logout);
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222 | }
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223 |
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224 | bool authenaction::check_cgiargs (cgiargsinfoclass &/*argsinfo*/, cgiargsclass &/*args*/,
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225 | ostream &/*logout*/) {
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226 | return true;
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227 | }
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228 |
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229 | // returns false if there is a major problem with the cgi arguments -- not
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230 | // if authentication fails. If the authentication fails "un" will be empty
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231 | bool authenaction::check_external_cgiargs (cgiargsinfoclass &argsinfo,
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232 | cgiargsclass &args,
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233 | outconvertclass &outconvert,
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234 | const text_t &saveconf,
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235 | ostream &logout) {
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236 | // success will be dealt with using a redirect in get_cgihead_info if neede
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237 | // failure means we have to redirect to this action to get authentication
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238 | // (if we are not already doing this)
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239 |
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240 | userinfo_t thisuser;
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241 |
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242 | text_t &args_uan = args["uan"];
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243 | text_t &args_un = args["un"];
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244 | text_t &args_pw = args["pw"];
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245 | text_t &args_us = args["us"];
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246 | text_t &args_ug = args["ug"];
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247 | text_t &args_ky = args["ky"];
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248 | text_t &args_ua = args["ua"];
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249 |
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250 | args_ua.clear(); // default = false;
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251 | if (args_un.empty() || args_pw.empty()) args_us = "invalid";
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252 | else args_us = "failed";
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253 |
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254 | // make sure we have a username
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255 | if (!args_un.empty() && get_user_info (userinfo, args_un, thisuser)) {
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256 | if (!args_pw.empty()) {
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257 | // we are authenticating using a password
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258 | if (check_passwd (thisuser, args_pw))
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259 | args_ua = "1"; // succeeded
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260 |
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261 | } else if (!args_ky.empty()) {
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262 | // we are authenticating using a key
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263 | args_ua = "1"; // succeeded !!!!!!!!!!!!!!!!!!!
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264 | }
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265 | }
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266 |
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267 | args_pw.clear(); // password goes no further
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268 |
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269 | if (!args_ua.empty()) {
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270 | if (thisuser.status==userinfo_t::enabled) {
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271 | // succeeded, get info about this user
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272 | args_us = "enabled";
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273 | args_ug = thisuser.groups;
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274 | args_ky = generate_key (args_un); // new key
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275 | } else {
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276 | // succeeded, however, the account is disabled
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277 | args_ua.clear();
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278 | args_us = "disabled";
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279 | args_ug.clear();
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280 | args_ky.clear();
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281 | }
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282 |
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283 | } else {
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284 | // failure, reset info about the user
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285 | args_ug.clear();
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286 | args_ky.clear();
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287 | }
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288 |
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289 | // we will have to redirect the user if authentication is needed,
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290 | // it failed, and we weren't on our way to be authenticated anyway
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291 | if (!args_uan.empty() && args_ua.empty() && args["a"] != "a") {
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292 | // need to save the current arguments in "er"
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293 | text_t &arg_er = args["er"];
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294 | if (!compress_save_args(argsinfo, saveconf, args, arg_er, outconvert, logout))
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295 | arg_er.clear();
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296 |
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297 | // redirect to this action
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298 | args["a"] = "a";
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299 | }
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300 |
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301 | return true;
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302 | }
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303 |
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304 | void authenaction::get_cgihead_info (cgiargsclass &/*args*/, response_t &response,
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305 | text_t &response_data, ostream &/*logout*/) {
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306 | response = content;
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307 | response_data = "text/html";
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308 | }
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309 |
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310 | void authenaction::define_internal_macros (displayclass &disp, cgiargsclass &args,
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311 | recptproto */*collectproto*/, ostream &/*logout*/) {
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312 | // sets _authen:messageextra_ based on the value of args["us"]
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313 | disp.setmacro ("messagestatus", "authen", ("_authen:message" + args["us"]
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314 | + "_"));
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315 | }
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316 |
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317 | void authenaction::define_external_macros (displayclass &/*disp*/, cgiargsclass &/*args*/,
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318 | recptproto */*collectproto*/, ostream &/*logout*/) {
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319 | }
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320 |
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321 | bool authenaction::do_action (cgiargsclass &args, recptproto */*collectproto*/,
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322 | displayclass &disp, outconvertclass &outconvert,
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323 | ostream &textout, ostream &/*logout*/) {
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324 | if (args["us"] == "enabled") {
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325 | // have been authenticated
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326 | textout << outconvert << disp
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327 | << "_authenok:header_\n_authenok:content_\n_authenok:footer_\n";
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328 | return true;
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329 | }
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330 |
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331 | // need to be authenticated
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332 | textout << outconvert << disp
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333 | << "_authen:header_\n_authen:content_\n_authen:footer_\n";
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334 |
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335 | return true;
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336 | }
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