From 9e2de4a08bd8c615c1515b11df18376b56a64acb Mon Sep 17 00:00:00 2001
From: Ryan Stecker <voidedweasel@gmail.com>
Date: Mon, 2 Jun 2014 20:14:31 -0500
Subject: [PATCH] Implement WriteHTTPResponseBodyToFile via stdio.

---
 Extension/swhttprequest.cpp  | 57 ++++++++++++++++++++++++++++++++++++
 Pawn/includes/SteamWorks.inc |  2 ++
 2 files changed, 59 insertions(+)

diff --git a/Extension/swhttprequest.cpp b/Extension/swhttprequest.cpp
index 3392f5f..2bcdaef 100644
--- a/Extension/swhttprequest.cpp
+++ b/Extension/swhttprequest.cpp
@@ -19,6 +19,8 @@
 
 #include "swhttprequest.h"
 
+#include <cstdio>
+
 static ISteamHTTP *GetHTTPPointer(void)
 {
 	return g_SteamWorks.pSWGameServer->GetHTTP();
@@ -606,6 +608,60 @@ static cell_t sm_GetHTTPResponseBodyCallback(IPluginContext *pContext, const cel
 	return 1;
 }
 
+static cell_t sm_WriteHTTPResponseBodyToFile(IPluginContext *pContext, const cell_t *params)
+{
+	ISteamHTTP *pHTTP = GetHTTPPointer();
+	if (pHTTP == NULL)
+	{
+		return 0;
+	}
+
+	HandleError err;
+	HandleSecurity sec(pContext->GetIdentity(), myself->GetIdentity());
+
+	SteamWorksHTTPRequest *pRequest;
+	if ((err = handlesys->ReadHandle(params[1], GetSteamHTTPHandle(), &sec, (void **)&pRequest))
+		!= HandleError_None)
+	{
+		return pContext->ThrowNativeError("Invalid Handle %x (error: %d)", params[1], err);
+	}
+
+	uint32_t size;
+	if (pHTTP->GetHTTPResponseBodySize(pRequest->request, &size) == false)
+	{
+		return 0;
+	}
+
+	char *pBuffer = new char[size];
+
+	if (pHTTP->GetHTTPResponseBodyData(pRequest->request, reinterpret_cast<uint8_t *>(pBuffer), size) == false)
+	{
+		delete [] pBuffer;
+		return 0;
+	}
+
+	char *pFilePath;
+	pContext->LocalToString(params[2], &pFilePath);
+
+	char szFinalPath[PLATFORM_MAX_PATH];
+	g_pSM->BuildPath(Path_Game, szFinalPath, sizeof(szFinalPath), "%s", pFilePath);
+
+	FILE *pOutputFile = fopen(szFinalPath, "wb");
+
+	if (!pOutputFile)
+	{
+		delete [] pBuffer;
+		return pContext->ThrowNativeError("Unable to open %s for writing. errno: %d", szFinalPath, errno);
+	}
+
+	fwrite(pBuffer, sizeof(char), size, pOutputFile);
+
+	delete [] pBuffer;
+	fclose(pOutputFile);
+
+	return 1;
+}
+
 static sp_nativeinfo_t httpnatives[] = {
 	{"SteamWorks_CreateHTTPRequest",				sm_CreateHTTPRequest},
 	{"SteamWorks_SetHTTPRequestContextValue",				sm_SetHTTPRequestContextValue},
@@ -623,6 +679,7 @@ static sp_nativeinfo_t httpnatives[] = {
 	{"SteamWorks_GetHTTPDownloadProgressPct",				sm_GetHTTPDownloadProgressPct},
 	{"SteamWorks_SetHTTPRequestRawPostBody",				sm_SetHTTPRequestRawPostBody},
 	{"SteamWorks_GetHTTPResponseBodyCallback",				sm_GetHTTPResponseBodyCallback},
+	{"SteamWorks_WriteHTTPResponseBodyToFile",				sm_WriteHTTPResponseBodyToFile},
 	{NULL,											NULL}
 };
 
diff --git a/Pawn/includes/SteamWorks.inc b/Pawn/includes/SteamWorks.inc
index 594c17b..02e69af 100644
--- a/Pawn/includes/SteamWorks.inc
+++ b/Pawn/includes/SteamWorks.inc
@@ -238,6 +238,7 @@ funcenum SteamWorksHTTPBodyCallback
 };
 
 native bool:SteamWorks_GetHTTPResponseBodyCallback(Handle:hRequest, SteamWorksHTTPBodyCallback:fCallback, any:data = 0, Handle:hPlugin = INVALID_HANDLE);
+native bool:SteamWorks_WriteHTTPResponseBodyToFile(Handle:hRequest, const String:sFileName[]);
 
 forward SW_OnValidateClient(ownerauthid, authid);
 forward SteamWorks_OnValidateClient(ownerauthid, authid);
@@ -305,5 +306,6 @@ public __ext_SteamWorks_SetNTVOptional()
 	MarkNativeAsOptional("SteamWorks_SetHTTPRequestRawPostBody");
 
 	MarkNativeAsOptional("SteamWorks_GetHTTPResponseBodyCallback");
+	MarkNativeAsOptional("SteamWorks_WriteHTTPResponseBodyToFile");
 }
 #endif