summaryrefslogtreecommitdiff
path: root/src/modules/m_sqloper.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/modules/m_sqloper.cpp')
-rw-r--r--src/modules/m_sqloper.cpp325
1 files changed, 325 insertions, 0 deletions
diff --git a/src/modules/m_sqloper.cpp b/src/modules/m_sqloper.cpp
new file mode 100644
index 000000000..5f0df4c10
--- /dev/null
+++ b/src/modules/m_sqloper.cpp
@@ -0,0 +1,325 @@
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+#include "m_sqlv2.h"
+#include "m_sqlutils.h"
+#include "m_hash.h"
+
+/* $ModDesc: Allows storage of oper credentials in an SQL table */
+/* $ModDep: m_sqlv2.h m_sqlutils.h m_hash.h */
+
+typedef std::map<irc::string, Module*> hashymodules;
+
+class ModuleSQLOper : public Module
+{
+ LocalStringExt saved_user;
+ LocalStringExt saved_pass;
+ Module* SQLutils;
+ std::string databaseid;
+ irc::string hashtype;
+ hashymodules hashers;
+ bool diduseiface;
+ parameterlist names;
+
+public:
+ ModuleSQLOper() : saved_user("sqloper_user", this), saved_pass("sqloper_pass", this)
+ {
+ ServerInstance->Modules->UseInterface("SQLutils");
+ ServerInstance->Modules->UseInterface("SQL");
+ ServerInstance->Modules->UseInterface("HashRequest");
+
+ OnRehash(NULL);
+
+ diduseiface = false;
+
+ /* Find all modules which implement the interface 'HashRequest' */
+ modulelist* ml = ServerInstance->Modules->FindInterface("HashRequest");
+
+ /* Did we find any modules? */
+ if (ml)
+ {
+ /* Yes, enumerate them all to find out the hashing algorithm name */
+ for (modulelist::iterator m = ml->begin(); m != ml->end(); m++)
+ {
+ /* Make a request to it for its name, its implementing
+ * HashRequest so we know its safe to do this
+ */
+ std::string name = HashNameRequest(this, *m).Send();
+ /* Build a map of them */
+ hashers[name.c_str()] = *m;
+ names.push_back(name);
+ }
+ /* 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. */
+ diduseiface = true;
+ ServerInstance->Modules->UseInterface("HashRequest");
+ }
+
+ SQLutils = ServerInstance->Modules->Find("m_sqlutils.so");
+ if (!SQLutils)
+ throw ModuleException("Can't find m_sqlutils.so. Please load m_sqlutils.so before m_sqloper.so.");
+
+ Implementation eventlist[] = { I_OnRehash, I_OnPreCommand, I_OnLoadModule };
+ ServerInstance->Modules->Attach(eventlist, this, 4);
+ }
+
+ bool OneOfMatches(const char* host, const char* ip, const char* hostlist)
+ {
+ std::stringstream hl(hostlist);
+ std::string xhost;
+ while (hl >> xhost)
+ {
+ if (InspIRCd::Match(host, xhost, ascii_case_insensitive_map) || InspIRCd::MatchCIDR(ip, xhost, ascii_case_insensitive_map))
+ {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ virtual void OnLoadModule(Module* mod, const std::string& name)
+ {
+ if (ServerInstance->Modules->ModuleHasInterface(mod, "HashRequest"))
+ {
+ ServerInstance->Logs->Log("m_sqloper",DEBUG, "Post-load registering hasher: %s", name.c_str());
+ std::string sname = HashNameRequest(this, mod).Send();
+ hashers[sname.c_str()] = mod;
+ names.push_back(sname);
+ if (!diduseiface)
+ {
+ ServerInstance->Modules->UseInterface("HashRequest");
+ diduseiface = true;
+ }
+ }
+ }
+
+ virtual ~ModuleSQLOper()
+ {
+ ServerInstance->Modules->DoneWithInterface("SQL");
+ ServerInstance->Modules->DoneWithInterface("SQLutils");
+ if (diduseiface)
+ ServerInstance->Modules->DoneWithInterface("HashRequest");
+ }
+
+
+ virtual void OnRehash(User* user)
+ {
+ ConfigReader Conf;
+
+ databaseid = Conf.ReadValue("sqloper", "dbid", 0); /* Database ID of a database configured for the service provider module */
+ hashtype = assign(Conf.ReadValue("sqloper", "hash", 0));
+ }
+
+ virtual ModResult OnPreCommand(std::string &command, std::vector<std::string> &parameters, User *user, bool validated, const std::string &original_line)
+ {
+ if ((validated) && (command == "OPER"))
+ {
+ if (LookupOper(user, parameters[0], parameters[1]))
+ {
+ /* Returning true here just means the query is in progress, or on it's way to being
+ * in progress. Nothing about the /oper actually being successful..
+ * If the oper lookup fails later, we pass the command to the original handler
+ * for /oper by calling its Handle method directly.
+ */
+ return MOD_RES_DENY;
+ }
+ }
+ return MOD_RES_PASSTHRU;
+ }
+
+ bool LookupOper(User* user, const std::string &username, const std::string &password)
+ {
+ Module* target;
+
+ target = ServerInstance->Modules->FindFeature("SQL");
+
+ if (target)
+ {
+ hashymodules::iterator x = hashers.find(hashtype);
+ if (x == hashers.end())
+ return false;
+
+ /* Reset hash module first back to MD5 standard state */
+ HashResetRequest(this, x->second).Send();
+ /* Make an MD5 hash of the password for using in the query */
+ std::string md5_pass_hash = HashSumRequest(this, x->second, password.c_str()).Send();
+
+ /* We generate our own sum here because some database providers (e.g. SQLite) dont have a builtin md5/sha256 function,
+ * also hashing it in the module and only passing a remote query containing a hash is more secure.
+ */
+ SQLrequest req = SQLrequest(this, target, databaseid,
+ SQLquery("SELECT username, password, hostname, type FROM ircd_opers WHERE username = '?' AND password='?'") % username % md5_pass_hash);
+
+ if (req.Send())
+ {
+ /* When we get the query response from the service provider we will be given an ID to play with,
+ * just an ID number which is unique to this query. We need a way of associating that ID with a User
+ * so we insert it into a map mapping the IDs to users.
+ * Thankfully m_sqlutils provides this, it will associate a ID with a user or channel, and if the user quits it removes the
+ * association. This means that if the user quits during a query we will just get a failed lookup from m_sqlutils - telling
+ * us to discard the query.
+ */
+ AssociateUser(this, SQLutils, req.id, user).Send();
+
+ saved_user.set(user, username);
+ saved_pass.set(user, password);
+
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+ }
+ else
+ {
+ ServerInstance->Logs->Log("m_sqloper",SPARSE, "WARNING: Couldn't find SQL provider module. NOBODY will be able to oper up unless their o:line is statically configured");
+ return false;
+ }
+ }
+
+ const char* OnRequest(Request* request)
+ {
+ if (strcmp(SQLRESID, request->GetId()) == 0)
+ {
+ SQLresult* res = static_cast<SQLresult*>(request);
+
+ User* user = GetAssocUser(this, SQLutils, res->id).S().user;
+ UnAssociate(this, SQLutils, res->id).S();
+
+ if (user)
+ {
+ std::string* tried_user = saved_user.get(user);
+ std::string* tried_pass = saved_pass.get(user);
+ if (res->error.Id() == SQL_NO_ERROR)
+ {
+ if (res->Rows())
+ {
+ /* We got a row in the result, this means there was a record for the oper..
+ * now we just need to check if their host matches, and if it does then
+ * oper them up.
+ *
+ * We now (previous versions of the module didn't) support multiple SQL
+ * rows per-oper in the same way the config file does, all rows will be tried
+ * until one is found which matches. This is useful to define several different
+ * hosts for a single oper.
+ *
+ * The for() loop works as SQLresult::GetRowMap() returns an empty map when there
+ * are no more rows to return.
+ */
+
+ for (SQLfieldMap& row = res->GetRowMap(); row.size(); row = res->GetRowMap())
+ {
+ if (OperUser(user, row["hostname"].d, row["type"].d))
+ {
+ /* If/when one of the rows matches, stop checking and return */
+ saved_user.unset(user);
+ saved_pass.unset(user);
+ return SQLSUCCESS;
+ }
+ if (tried_user && tried_pass)
+ {
+ LoginFail(user, *tried_user, *tried_pass);
+ saved_user.unset(user);
+ saved_pass.unset(user);
+ }
+ }
+ }
+ else
+ {
+ /* No rows in result, this means there was no oper line for the user,
+ * we should have already checked the o:lines so now we need an
+ * "insufficient awesomeness" (invalid credentials) error
+ */
+ if (tried_user && tried_pass)
+ {
+ LoginFail(user, *tried_user, *tried_pass);
+ saved_user.unset(user);
+ saved_pass.unset(user);
+ }
+ }
+ }
+ else
+ {
+ /* This one shouldn't happen, the query failed for some reason.
+ * We have to fail the /oper request and give them the same error
+ * as above.
+ */
+ if (tried_user && tried_pass)
+ {
+ LoginFail(user, *tried_user, *tried_pass);
+ saved_user.unset(user);
+ saved_pass.unset(user);
+ }
+
+ }
+ }
+
+ return SQLSUCCESS;
+ }
+
+ return NULL;
+ }
+
+ void LoginFail(User* user, const std::string &username, const std::string &pass)
+ {
+ Command* oper_command = ServerInstance->Parser->GetHandler("OPER");
+
+ if (oper_command)
+ {
+ std::vector<std::string> params;
+ params.push_back(username);
+ params.push_back(pass);
+ oper_command->Handle(params, user);
+ }
+ else
+ {
+ ServerInstance->Logs->Log("m_sqloper",DEBUG, "BUG: WHAT?! Why do we have no OPER command?!");
+ }
+ }
+
+ bool OperUser(User* user, const std::string &pattern, const std::string &type)
+ {
+ ConfigReader Conf;
+
+ for (int j = 0; j < Conf.Enumerate("type"); j++)
+ {
+ std::string tname = Conf.ReadValue("type","name",j);
+ std::string hostname(user->ident);
+
+ hostname.append("@").append(user->host);
+
+ if ((tname == type) && OneOfMatches(hostname.c_str(), user->GetIPString(), pattern.c_str()))
+ {
+ /* Opertype and host match, looks like this is it. */
+ std::string operhost = Conf.ReadValue("type", "host", j);
+
+ if (operhost.size())
+ user->ChangeDisplayedHost(operhost.c_str());
+
+ user->Oper(type, tname);
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ Version GetVersion()
+ {
+ return Version("Allows storage of oper credentials in an SQL table", VF_VENDOR, API_VERSION);
+ }
+
+};
+
+MODULE_INIT(ModuleSQLOper)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 19:31:15 +0000