src/modules/m_password_hash.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $ModDesc: Allows for hashed oper passwords */
  15
  16 #include "inspircd.h"
  17 #include "m_hash.h"
  18
  19 typedef std::map<irc::string, Module*> hashymodules;
  20
  21 /* Handle /MKPASSWD
  22  */
  23 class CommandMkpasswd : public Command
  24 {
  25         hashymodules &hashers;
  26         std::deque<std::string> &names;
  27  public:
  28         CommandMkpasswd(Module* Creator, hashymodules &h, std::deque<std::string> &n) : Command(Creator, "MKPASSWD", 2), hashers(h), names(n)
  29         {
  30                 syntax = "<hashtype> <any-text>";
  31                 Penalty = 5;
  32         }
  33
  34         void MakeHash(User* user, const char* algo, const char* stuff)
  35         {
  36                 /* Lets see if they gave us an algorithm which has been implemented */
  37                 hashymodules::iterator x = hashers.find(algo);
  38                 if (x != hashers.end())
  39                 {
  40                         HashRequest hash(creator, x->second, stuff);
  41                         /* Now attempt to generate a hash */
  42                         user->WriteServ("NOTICE %s :%s hashed password for %s is %s",
  43                                 user->nick.c_str(), algo, stuff, hash.hex().c_str());
  44                 }
  45                 else if (names.empty())
  46                 {
  47                         /* same idea as bug #569 */
  48                         user->WriteServ("NOTICE %s :No hash provider modules are loaded", user->nick.c_str());
  49                 }
  50                 else
  51                 {
  52                         /* I dont do flying, bob. */
  53                         user->WriteServ("NOTICE %s :Unknown hash type, valid hash types are: %s", user->nick.c_str(), irc::stringjoiner(", ", names, 0, names.size() - 1).GetJoined().c_str() );
  54                 }
  55         }
  56
  57         CmdResult Handle (const std::vector<std::string>& parameters, User *user)
  58         {
  59                 MakeHash(user, parameters[0].c_str(), parameters[1].c_str());
  60
  61                 return CMD_SUCCESS;
  62         }
  63 };
  64
  65 class ModuleOperHash : public Module
  66 {
  67
  68         CommandMkpasswd cmd;
  69         hashymodules hashers; /* List of modules which implement HashRequest */
  70         std::deque<std::string> names; /* Module names which implement HashRequest */
  71
  72         bool diduseiface; /* If we've called UseInterface yet. */
  73  public:
  74
  75         ModuleOperHash()
  76                 : cmd(this, hashers, names)
  77         {
  78                 diduseiface = false;
  79
  80                 /* Read the config file first */
  81 //              Conf = NULL;
  82                 OnRehash(NULL);
  83
  84                 /* Find all modules which implement the interface 'HashRequest' */
  85                 modulelist* ml = ServerInstance->Modules->FindInterface("HashRequest");
  86
  87                 /* Did we find any modules? */
  88                 if (ml)
  89                 {
  90                         /* Yes, enumerate them all to find out the hashing algorithm name */
  91                         for (modulelist::iterator m = ml->begin(); m != ml->end(); m++)
  92                         {
  93                                 /* Make a request to it for its name, its implementing
  94                                  * HashRequest so we know its safe to do this
  95                                  */
  96                                 std::string name = HashNameRequest(this, *m).response;
  97                                 /* Build a map of them */
  98                                 hashers[name.c_str()] = *m;
  99                                 names.push_back(name);
 100                         }
 101                         /* UseInterface doesn't do anything if there are no providers, so we'll have to call it later if a module gets loaded later on. */
 102                         ServerInstance->Modules->UseInterface("HashRequest");
 103                         diduseiface = true;
 104                 }
 105
 106                 ServerInstance->AddCommand(&cmd);
 107                 Implementation eventlist[] = { I_OnPassCompare, I_OnLoadModule };
 108                 ServerInstance->Modules->Attach(eventlist, this, 2);
 109         }
 110
 111         virtual ~ModuleOperHash()
 112         {
 113                 if (diduseiface) ServerInstance->Modules->DoneWithInterface("HashRequest");
 114         }
 115
 116
 117         virtual void OnLoadModule(Module* mod)
 118         {
 119                 if (ServerInstance->Modules->ModuleHasInterface(mod, "HashRequest"))
 120                 {
 121                         std::string sname = HashNameRequest(this, mod).response;
 122                         hashers[sname.c_str()] = mod;
 123                         names.push_back(sname);
 124                         if (!diduseiface)
 125                         {
 126                                 ServerInstance->Modules->UseInterface("HashRequest");
 127                                 diduseiface = true;
 128                         }
 129                 }
 130         }
 131
 132         virtual ModResult OnPassCompare(Extensible* ex, const std::string &data, const std::string &input, const std::string &hashtype)
 133         {
 134                 /* First, lets see what hash theyre using on this oper */
 135                 hashymodules::iterator x = hashers.find(hashtype.c_str());
 136
 137                 /* Is this a valid hash name? (case insensitive) */
 138                 if (x != hashers.end())
 139                 {
 140                         /* Compare the hash in the config to the generated hash */
 141                         if (!strcasecmp(data.c_str(), HashRequest(this, x->second, input).hex().c_str()))
 142                                 return MOD_RES_ALLOW;
 143                         /* No match, and must be hashed, forbid */
 144                         else
 145                                 return MOD_RES_DENY;
 146                 }
 147
 148                 /* Not a hash, fall through to strcmp in core */
 149                 return MOD_RES_PASSTHRU;
 150         }
 151
 152         virtual Version GetVersion()
 153         {
 154                 return Version("Allows for hashed oper passwords",VF_VENDOR,API_VERSION);
 155         }
 156 };
 157
 158 MODULE_INIT(ModuleOperHash)