summaryrefslogtreecommitdiff
path: root/src/modules/m_sqloper.cpp
blob: 66fb0550e824c363a96e2ebdf2ab12c0736e3a06 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
/*       +------------------------------------+
 *       | Inspire Internet Relay Chat Daemon |
 *       +------------------------------------+
 *
 *  InspIRCd: (C) 2002-2010 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 "sql.h"
#include "hash.h"

/* $ModDesc: Allows storage of oper credentials in an SQL table */

static bool OneOfMatches(const char* host, const char* ip, const std::string& 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;
}

class OpMeQuery : public SQLQuery
{
 public:
	const std::string uid, username, password;
	OpMeQuery(Module* me, const std::string& db, const std::string& q, const std::string& u, const std::string& un, const std::string& pw)
		: SQLQuery(me, db, q), uid(u), username(un), password(pw)
	{
		ServerInstance->Logs->Log("m_sqloper",DEBUG, "SQLOPER: db=%s query=\"%s\"", db.c_str(), q.c_str());
	}

	void OnResult(SQLResult& res)
	{
		ServerInstance->Logs->Log("m_sqloper",DEBUG, "SQLOPER: result on db=%s for %s", dbid.c_str(), uid.c_str());
		User* user = ServerInstance->FindNick(uid);
		if (!user)
			return;

		// multiple rows may exist
		SQLEntries row;
		while (res.GetRow(row))
		{
#if 0
			parameterlist cols;
			res.GetCols(cols);

			std::vector<KeyVal>* items;
			reference<ConfigTag> tag = ConfigTag::create("oper", "<m_sqloper>", 0, items);
			for(unsigned int i=0; i < cols.size(); i++)
			{
				if (!row[i].nul)
					items->insert(std::make_pair(cols[i], row[i]));
			}
#else
			if (OperUser(user, row[0], row[1]))
				return;
#endif
		}
		ServerInstance->Logs->Log("m_sqloper",DEBUG, "SQLOPER: no matches for %s (checked %d rows)", uid.c_str(), res.Rows());
		// nobody succeeded... fall back to OPER
		fallback();
	}

	void OnError(SQLerror& error)
	{
		ServerInstance->Logs->Log("m_sqloper",DEFAULT, "SQLOPER: query failed (%s)", error.Str());
		fallback();
	}

	void fallback()
	{
		User* user = ServerInstance->FindNick(uid);
		if (!user)
			return;

		Command* oper_command = ServerInstance->Parser->GetHandler("OPER");

		if (oper_command)
		{
			std::vector<std::string> params;
			params.push_back(username);
			params.push_back(password);
			oper_command->Handle(params, user);
		}
		else
		{
			ServerInstance->Logs->Log("m_sqloper",SPARSE, "BUG: WHAT?! Why do we have no OPER command?!");
		}
	}

	bool OperUser(User* user, const std::string &pattern, const std::string &type)
	{
		OperIndex::iterator iter = ServerInstance->Config->oper_blocks.find(" " + type);
		if (iter == ServerInstance->Config->oper_blocks.end())
		{
			ServerInstance->Logs->Log("m_sqloper",DEFAULT, "SQLOPER: bad type '%s' in returned row for oper %s", type.c_str(), username.c_str());
			return false;
		}
		OperInfo* ifo = iter->second;

		std::string hostname(user->ident);

		hostname.append("@").append(user->host);

		if (OneOfMatches(hostname.c_str(), user->GetIPString(), pattern.c_str()))
		{
			/* Opertype and host match, looks like this is it. */

			user->Oper(ifo);
			return true;
		}

		return false;
	}
};

class ModuleSQLOper : public Module
{
	std::string databaseid;
	std::string query;
	std::string hashtype;
	dynamic_reference<SQLProvider> SQL;

public:
	ModuleSQLOper() : SQL(this, "SQL") {}

	void init()
	{
		OnRehash(NULL);

		Implementation eventlist[] = { I_OnRehash, I_OnPreCommand };
		ServerInstance->Modules->Attach(eventlist, this, 2);
	}

	void OnRehash(User* user)
	{
		ConfigTag* tag = ServerInstance->Config->ConfValue("sqloper");

		databaseid = tag->getString("dbid");
		hashtype = tag->getString("hash");
		query = tag->getString("query", "SELECT hostname as host, type FROM ircd_opers WHERE username='$username' AND password='$password'");
	}

	ModResult OnPreCommand(std::string &command, std::vector<std::string> &parameters, LocalUser *user, bool validated, const std::string &original_line)
	{
		if (validated && command == "OPER" && parameters.size() == 2 && SQL)
		{
			LookupOper(user, parameters[0], parameters[1]);
			/* Query is in progress, it will re-invoke OPER if needed */
			return MOD_RES_DENY;
		}
		return MOD_RES_PASSTHRU;
	}

	void LookupOper(User* user, const std::string &username, const std::string &password)
	{
		HashProvider* hash = ServerInstance->Modules->FindDataService<HashProvider>("hash/" + hashtype);

		ParamM userinfo;
		SQL->PopulateUserInfo(user, userinfo);
		userinfo["username"] = username;
		userinfo["password"] = hash ? hash->hexsum(password) : password;

		SQL->submit(new OpMeQuery(this, databaseid, SQL->FormatQuery(query, userinfo), user->uuid, username, password));
	}

	Version GetVersion()
	{
		return Version("Allows storage of oper credentials in an SQL table", VF_VENDOR);
	}

};

MODULE_INIT(ModuleSQLOper)