/**

  * vim: set ts=4 :

  * =============================================================================

  * SourceMod SQL Admins Plugin (Prefetch)

  * Prefetches admins from an SQL database without threading.

  *

  * SourceMod (C)2004-2008 AlliedModders LLC.  All rights reserved.

  * =============================================================================

  *

  * This program is free software; you can redistribute it and/or modify it under

  * the terms of the GNU General Public License, version 3.0, as published by the

  * Free Software Foundation.

  * 

  * This program is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more

  * details.

  *

  * You should have received a copy of the GNU General Public License along with

  * this program.  If not, see <http://www.gnu.org/licenses/>.

  *

  * As a special exception, AlliedModders LLC gives you permission to link the

  * code of this program (as well as its derivative works) to "Half-Life 2," the

  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

  * by the Valve Corporation.  You must obey the GNU General Public License in

  * all respects for all other code used.  Additionally, AlliedModders LLC grants

  * this exception to all derivative works.  AlliedModders LLC defines further

  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

  * or <http://www.sourcemod.net/license.php>.

  *

  * Version: $Id$

  */

 /* We like semicolons */

 #pragma semicolon 1

 #include <sourcemod>

 public Plugin:myinfo = 

 {

 	name = "SQL Admins (Prefetch)",

 	author = "AlliedModders LLC",

 	description = "Reads all admins from SQL",

 	version = SOURCEMOD_VERSION,

 	url = "http://www.sourcemod.net/"

 };

 public OnRebuildAdminCache(AdminCachePart:part)

 {

 	/* First try to get a database connection */

 	decl String:error[255];

 	new Handle:db;

 	if (SQL_CheckConfig("admins"))

 	{

 		db = SQL_Connect("admins", true, error, sizeof(error));

 	} else {

 		db = SQL_Connect("default", true, error, sizeof(error));

 	}

 	if (db == INVALID_HANDLE)

 	{

 		LogError("Could not connect to database \"default\": %s", error);

 		return;

 	}

 	if (part == AdminCache_Overrides)

 	{

 		FetchOverrides(db);

 	} else if (part == AdminCache_Groups) {

 		FetchGroups(db);

 	} else if (part == AdminCache_Admins) {

 		FetchUsers(db);

 	}

 	CloseHandle(db);

 }

 FetchUsers(Handle:db)

 {

 	decl String:query[255], String:error[255];

 	new Handle:hQuery;

 	Format(query, sizeof(query), "SELECT id, authtype, identity, password, flags, name, immunity FROM sm_admins");

 	if ((hQuery = SQL_Query(db, query)) == INVALID_HANDLE)

 	{

 		SQL_GetError(db, error, sizeof(error));

 		LogError("FetchUsers() query failed: %s", query);

 		LogError("Query error: %s", error);

 		return;

 	}

 	decl String:authtype[16];

 	decl String:identity[80];

 	decl String:password[80];

 	decl String:flags[32];

 	decl String:name[80];

 	new immunity;

 	new AdminId:adm, id;

 	new GroupId:gid;

 	/* Keep track of a mapping from admin DB IDs to internal AdminIds to

 	 * enable group lookups en masse */

 	new Handle:htAdmins = CreateTrie();

 	decl String:key[16];

 	while (SQL_FetchRow(hQuery))

 	{

 		id = SQL_FetchInt(hQuery, 0);

 		IntToString(id, key, sizeof(key));

 		SQL_FetchString(hQuery, 1, authtype, sizeof(authtype));

 		SQL_FetchString(hQuery, 2, identity, sizeof(identity));

 		SQL_FetchString(hQuery, 3, password, sizeof(password));

 		SQL_FetchString(hQuery, 4, flags, sizeof(flags));

 		SQL_FetchString(hQuery, 5, name, sizeof(name));

 		immunity = SQL_FetchInt(hQuery, 6);

 		/* Use a pre-existing admin if we can */

 		if ((adm = FindAdminByIdentity(authtype, identity)) == INVALID_ADMIN_ID)

 		{

 			adm = CreateAdmin(name);

 			if (!BindAdminIdentity(adm, authtype, identity))

 			{

 				LogError("Could not bind prefetched SQL admin (authtype \"%s\") (identity \"%s\")", authtype, identity);

 				continue;

 			}

 		}

 		SetTrieValue(htAdmins, key, adm);

 		#if defined _DEBUG

 		PrintToServer("Found SQL admin (%d,%s,%s,%s,%s,%s,%d):%d", id, authtype, identity, password, flags, name, immunity, adm);

 		#endif

 		/* See if this admin wants a password */

 		if (password[0] != '\0')

 		{

 			SetAdminPassword(adm, password);

 		}

 		/* Apply each flag */

 		new len = strlen(flags);

 		new AdminFlag:flag;

 		for (new i=0; i<len; i++)

 		{

 			if (!FindFlagByChar(flags[i], flag))

 			{

 				continue;

 			}

 			SetAdminFlag(adm, flag, true);

 		}

 		SetAdminImmunityLevel(adm, immunity);

 	}

 	new Handle:hGroupQuery;

 	Format(query, sizeof(query), "SELECT ag.admin_id AS id, g.name FROM sm_admins_groups ag JOIN sm_groups g ON ag.group_id = g.id  ORDER BY id, inherit_order ASC");

 	if ((hGroupQuery = SQL_Query(db, query)) == INVALID_HANDLE)

 	{

 		SQL_GetError(db, error, sizeof(error));

 		LogError("FetchUsers() query failed: %s", query);

 		LogError("Query error: %s", error);

 		return;

 	}

 	decl String:group[80];

 	while (SQL_FetchRow(hGroupQuery))

 	{

 		IntToString(SQL_FetchInt(hGroupQuery, 0), key, sizeof(key));

 		SQL_FetchString(hGroupQuery, 1, group, sizeof(group));

 		if (GetTrieValue(htAdmins, key, adm))

 		{

 			if ((gid = FindAdmGroup(group)) == INVALID_GROUP_ID)

 			{

 				/* Group wasn't found, don't bother with it.  */

 				continue;

 			}

 			AdminInheritGroup(adm, gid);

 		}

 	}

 	CloseHandle(hQuery);

 	CloseHandle(hGroupQuery);

 	CloseHandle(htAdmins);

 }

 FetchGroups(Handle:db)

 {

 	decl String:query[255];

 	new Handle:hQuery;

 	Format(query, sizeof(query), "SELECT flags, name, immunity_level FROM sm_groups");

 	if ((hQuery = SQL_Query(db, query)) == INVALID_HANDLE)

 	{

 		decl String:error[255];

 		SQL_GetError(db, error, sizeof(error));

 		LogError("FetchGroups() query failed: %s", query);

 		LogError("Query error: %s", error);

 		return;

 	}

 	/* Now start fetching groups */

 	decl String:flags[32];

 	decl String:name[128];

 	new immunity;

 	while (SQL_FetchRow(hQuery))

 	{

 		SQL_FetchString(hQuery, 0, flags, sizeof(flags));

 		SQL_FetchString(hQuery, 1, name, sizeof(name));

 		immunity = SQL_FetchInt(hQuery, 2);

 #if defined _DEBUG

 		PrintToServer("Adding group (%d, %s, %s)", immunity, flags, name);

 #endif

 		/* Find or create the group */

 		new GroupId:gid;

 		if ((gid = FindAdmGroup(name)) == INVALID_GROUP_ID)

 		{

 			gid = CreateAdmGroup(name);

 		}

 		/* Add flags from the database to the group */

 		new num_flag_chars = strlen(flags);

 		for (new i=0; i<num_flag_chars; i++)

 		{

 			decl AdminFlag:flag;

 			if (!FindFlagByChar(flags[i], flag))

 			{

 				continue;

 			}

 			SetAdmGroupAddFlag(gid, flag, true);

 		}

 		/* Set the immunity level this group has */

 		SetAdmGroupImmunityLevel(gid, immunity);

 	}

 	CloseHandle(hQuery);

 	/** 

 	 * Get immunity in a big lump.  This is a nasty query but it gets the job done.

 	 */

 	new len = 0;

 	len += Format(query[len], sizeof(query)-len, "SELECT g1.name, g2.name FROM sm_group_immunity gi");

 	len += Format(query[len], sizeof(query)-len, " LEFT JOIN sm_groups g1 ON g1.id = gi.group_id ");

 	len += Format(query[len], sizeof(query)-len, " LEFT JOIN sm_groups g2 ON g2.id = gi.other_id");

 	if ((hQuery = SQL_Query(db, query)) == INVALID_HANDLE)

 	{

 		decl String:error[255];

 		SQL_GetError(db, error, sizeof(error));

 		LogError("FetchGroups() query failed: %s", query);

 		LogError("Query error: %s", error);

 		return;

 	}

 	while (SQL_FetchRow(hQuery))

 	{

 		decl String:group1[80];

 		decl String:group2[80];

 		new GroupId:gid1, GroupId:gid2;

 		SQL_FetchString(hQuery, 0, group1, sizeof(group1));

 		SQL_FetchString(hQuery, 1, group2, sizeof(group2));

 		if (((gid1 = FindAdmGroup(group1)) == INVALID_GROUP_ID)

 			|| (gid2 = FindAdmGroup(group2)) == INVALID_GROUP_ID)

 		{

 			continue;

 		}

 		SetAdmGroupImmuneFrom(gid1, gid2);

 #if defined _DEBUG

 		PrintToServer("SetAdmGroupImmuneFrom(%d, %d)", gid1, gid2);

 #endif

 	}

 	CloseHandle(hQuery);

 	/**

 	 * Fetch overrides in a lump query.

 	 */

 	Format(query, sizeof(query), "SELECT g.name, go.type, go.name, go.access FROM sm_group_overrides go LEFT JOIN sm_groups g ON go.group_id = g.id");

 	if ((hQuery = SQL_Query(db, query)) == INVALID_HANDLE)

 	{

 		decl String:error[255];

 		SQL_GetError(db, error, sizeof(error));

 		LogError("FetchGroups() query failed: %s", query);

 		LogError("Query error: %s", error);

 		return;

 	}

 	decl String:type[16];

 	decl String:cmd[64];

 	decl String:access[16];

 	while (SQL_FetchRow(hQuery))

 	{

 		SQL_FetchString(hQuery, 0, name, sizeof(name));

 		SQL_FetchString(hQuery, 1, type, sizeof(type));

 		SQL_FetchString(hQuery, 2, cmd, sizeof(cmd));

 		SQL_FetchString(hQuery, 3, access, sizeof(access));

 		new GroupId:gid;

 		if ((gid = FindAdmGroup(name)) == INVALID_GROUP_ID)

 		{

 			continue;

 		}

 		new OverrideType:o_type = Override_Command;

 		if (StrEqual(type, "group"))

 		{

 			o_type = Override_CommandGroup;

 		}

 		new OverrideRule:o_rule = Command_Deny;

 		if (StrEqual(access, "allow"))

 		{

 			o_rule = Command_Allow;

 		}

 		#if defined _DEBUG

 		PrintToServer("AddAdmGroupCmdOverride(%d, %s, %d, %d)", gid, cmd, o_type, o_rule);

 		#endif

 		AddAdmGroupCmdOverride(gid, cmd, o_type, o_rule);

 	}

 	CloseHandle(hQuery);

 }

 FetchOverrides(Handle:db)

 {

 	decl String:query[255];

 	new Handle:hQuery;

 	Format(query, sizeof(query), "SELECT type, name, flags FROM sm_overrides");

 	if ((hQuery = SQL_Query(db, query)) == INVALID_HANDLE)

 	{

 		decl String:error[255];

 		SQL_GetError(db, error, sizeof(error));

 		LogError("FetchOverrides() query failed: %s", query);

 		LogError("Query error: %s", error);

 		return;

 	}

 	decl String:type[64];

 	decl String:name[64];

 	decl String:flags[32];

 	new flag_bits;

 	while (SQL_FetchRow(hQuery))

 	{

 		SQL_FetchString(hQuery, 0, type, sizeof(type));

 		SQL_FetchString(hQuery, 1, name, sizeof(name));

 		SQL_FetchString(hQuery, 2, flags, sizeof(flags));

 #if defined _DEBUG

 		PrintToServer("Adding override (%s, %s, %s)", type, name, flags);

 #endif

 		flag_bits = ReadFlagString(flags);

 		if (StrEqual(type, "command"))

 		{

 			AddCommandOverride(name, Override_Command, flag_bits);

 		} else if (StrEqual(type, "group")) {

 			AddCommandOverride(name, Override_CommandGroup, flag_bits);

 		}

 	}

 	CloseHandle(hQuery);

 }