From 6cf5c99ded8f81d9136bf60fc0ce3299e6bb6616 Mon Sep 17 00:00:00 2001
From: s1lentq <s1lentsk@yandex.ru>
Date: Wed, 22 Jun 2016 21:39:58 +0700
Subject: [PATCH] Fix crash rg_find_item_bpack_by_name

---
 .../scripting/include/reapi_gamedll.inc       |  2 +-
 .../scripting/include/reapi_gamedll_const.inc |  8 +++++
 reapi/src/natives/natives_misc.cpp            | 29 +++++++++++++++++--
 reapi/src/natives/natives_misc.h              |  3 +-
 4 files changed, 37 insertions(+), 5 deletions(-)

diff --git a/reapi/extra/amxmodx/scripting/include/reapi_gamedll.inc b/reapi/extra/amxmodx/scripting/include/reapi_gamedll.inc
index 992d000..88141fb 100644
--- a/reapi/extra/amxmodx/scripting/include/reapi_gamedll.inc
+++ b/reapi/extra/amxmodx/scripting/include/reapi_gamedll.inc
@@ -297,7 +297,7 @@ native rg_find_ent_by_owner(&start_index, const classname[], owner);
 * @return			Entity-index of item, 0 otherwise
 *
 */
-native rg_find_bpack_item_by_name(const index, const item[]);
+native rg_find_item_bpack_by_name(const index, const item[]);
 
 /*
 * Returns some information about a weapon.
diff --git a/reapi/extra/amxmodx/scripting/include/reapi_gamedll_const.inc b/reapi/extra/amxmodx/scripting/include/reapi_gamedll_const.inc
index 1f5d93a..4ad83f7 100644
--- a/reapi/extra/amxmodx/scripting/include/reapi_gamedll_const.inc
+++ b/reapi/extra/amxmodx/scripting/include/reapi_gamedll_const.inc
@@ -88,6 +88,14 @@ enum WpnInfo
 	*/
 	WI_AMMO_TYPE,
 
+	/*
+	* Description:		-
+	* Return type:		-
+	* Get params:		rg_get_weapon_info(const weapon_id, WI_AMMO_NAME, const output[], maxlenght);
+	* Set params:		-
+	*/
+	WI_AMMO_NAME,
+
 	/*
 	* Description:		-
 	* Return type:		-
diff --git a/reapi/src/natives/natives_misc.cpp b/reapi/src/natives/natives_misc.cpp
index c0fc935..38879fd 100644
--- a/reapi/src/natives/natives_misc.cpp
+++ b/reapi/src/natives/natives_misc.cpp
@@ -547,7 +547,7 @@ cell AMX_NATIVE_CALL rg_find_ent_by_owner(AMX *amx, cell *params)
 *
 * @return			Entity-index of item, 0 otherwise
 *
-* native rg_find_bpack_item_by_name(const index, const item[]);
+* native rg_find_item_bpack_by_name(const index, const item[]);
 */
 cell AMX_NATIVE_CALL rg_find_item_bpack_by_name(AMX *amx, cell *params)
 {
@@ -563,8 +563,11 @@ cell AMX_NATIVE_CALL rg_find_item_bpack_by_name(AMX *amx, cell *params)
 
 	const char *itemName = getAmxString(amx, params[arg_item]);
 	auto pInfo = g_ReGameApi->GetWeaponSlot(itemName);
-	auto pItem = pPlayer->m_rgpPlayerItems[ pInfo->slot ];
+	if (pInfo == nullptr) {
+		return 0;
+	}
 
+	auto pItem = pPlayer->m_rgpPlayerItems[ pInfo->slot ];
 	while (pItem) {
 		if (FClassnameIs(pItem->pev, itemName)) {
 			return indexOfEdict(pItem->pev);
@@ -626,6 +629,25 @@ cell AMX_NATIVE_CALL rg_get_weapon_info(AMX *amx, cell *params)
 		return info->maxRounds;
 	case WI_AMMO_TYPE:
 		return info->ammoType;
+	case WI_AMMO_NAME:
+		{
+			if (PARAMS_COUNT != arg_4) {
+				MF_LogError(amx, AMX_ERR_NATIVE, "%s: bad parameter count, got %i, expected %i", __FUNCTION__, PARAMS_COUNT, arg_4);
+				return -1;
+			}
+
+			// native rg_get_weapon_info(id, WI_AMMO_NAME, output[], maxlength);
+			cell* dest = getAmxAddr(amx, params[arg_3]);
+			size_t length = *getAmxAddr(amx, params[arg_4]);
+
+			if (info->ammoName == nullptr) {
+				setAmxString(dest, "", 1);
+				return 0;
+			}
+
+			setAmxString(dest, info->ammoName, length);
+			return 1;
+		}
 	case WI_NAME:
 		{
 			if (PARAMS_COUNT != arg_4) {
@@ -688,8 +710,9 @@ cell AMX_NATIVE_CALL rg_set_weapon_info(AMX *amx, cell *params)
 	case WI_GUN_CLIP_SIZE:
 	case WI_MAX_ROUNDS:
 	case WI_AMMO_TYPE:
+	case WI_AMMO_NAME:
 	case WI_NAME:
-		MF_LogError(amx, AMX_ERR_NATIVE, "%s: this change will have no effect", __FUNCTION__);
+		MF_LogError(amx, AMX_ERR_NATIVE, "%s: this change will have no effect, type statement %i", __FUNCTION__, info_type);
 		return 0;
 	default:
 		MF_LogError(amx, AMX_ERR_NATIVE, "%s: unknown type statement %i, params count %i", __FUNCTION__, info_type, PARAMS_COUNT);
diff --git a/reapi/src/natives/natives_misc.h b/reapi/src/natives/natives_misc.h
index 3991dd2..7fd5fca 100644
--- a/reapi/src/natives/natives_misc.h
+++ b/reapi/src/natives/natives_misc.h
@@ -9,7 +9,8 @@ enum WpnInfo
 	WI_GUN_CLIP_SIZE,
 	WI_MAX_ROUNDS,
 	WI_AMMO_TYPE,
-	WI_NAME
+	WI_AMMO_NAME,
+	WI_NAME,
 };
 
 void RegisterNatives_Misc();