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authorpolaris- <nagatospam@gmail.com>2015-11-22 21:57:06 +0100
committerpolaris- <nagatospam@gmail.com>2015-11-22 22:54:51 +0100
commit4179e91baf3b7cfb596875bdfc1419ceabd2ad16 (patch)
treea2a089509943e0c39c4e233dc9849386fe97430c /src
parentAdd Initialize and GenerateRandomData stubs (diff)
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Diffstat (limited to 'src')
-rw-r--r--src/core/hle/service/ssl_c.cpp53
1 files changed, 51 insertions, 2 deletions
diff --git a/src/core/hle/service/ssl_c.cpp b/src/core/hle/service/ssl_c.cpp
index 04ab194e6..cabd18c80 100644
--- a/src/core/hle/service/ssl_c.cpp
+++ b/src/core/hle/service/ssl_c.cpp
@@ -2,6 +2,8 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
+#include <random>
+
#include "core/hle/hle.h"
#include "core/hle/service/ssl_c.h"
@@ -10,11 +12,58 @@
namespace SSL_C {
+// TODO: Implement a proper CSPRNG in the future when actual security is needed
+static std::mt19937 rand_gen;
+
+static void Initialize(Service::Interface* self) {
+ u32* cmd_buff = Kernel::GetCommandBuffer();
+
+ // Seed random number generator when the SSL service is initialized
+ std::random_device rand_device;
+ rand_gen.seed(rand_device());
+
+ // Stub, return success
+ cmd_buff[1] = RESULT_SUCCESS.raw;
+}
+
+static void GenerateRandomData(Service::Interface* self) {
+ u32* cmd_buff = Kernel::GetCommandBuffer();
+
+ u32 size = cmd_buff[1];
+ VAddr address = cmd_buff[3];
+ u8* output_buff = Memory::GetPointer(address);
+
+ // Fill the output buffer with random data.
+ u32 data = 0;
+ u32 i = 0;
+ while (i < size) {
+ if ((i % 4) == 0) {
+ // The random number generator returns 4 bytes worth of data, so generate new random data when i == 0 and when i is divisible by 4
+ data = rand_gen();
+ }
+
+ if (size > 4) {
+ // Use up the entire 4 bytes of the random data for as long as possible
+ *(u32*)(output_buff + i) = data;
+ i += 4;
+ } else if (size == 2) {
+ *(u16*)(output_buff + i) = (u16)(data & 0xffff);
+ i += 2;
+ } else {
+ *(u8*)(output_buff + i) = (u8)(data & 0xff);
+ i++;
+ }
+ }
+
+ // Stub, return success
+ cmd_buff[1] = RESULT_SUCCESS.raw;
+}
+
const Interface::FunctionInfo FunctionTable[] = {
- {0x00010002, nullptr, "Initialize"},
+ {0x00010002, Initialize, "Initialize"},
{0x000200C2, nullptr, "CreateContext"},
{0x00050082, nullptr, "AddTrustedRootCA"},
- {0x00110042, nullptr, "GenerateRandomData"},
+ {0x00110042, GenerateRandomData, "GenerateRandomData"},
{0x00150082, nullptr, "Read"},
{0x00170082, nullptr, "Write"},
};