ac.c

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#include <stdlib.h>
#include <3ds.h>

static Handle acHandle;

Result acInit()
{
    return srvGetServiceHandle(&acHandle, "ac:u");  
}

Result acExit()
{
    return svcCloseHandle(acHandle);
}

// ptr=0x200-byte outbuf
Result ACU_CreateDefaultConfig(Handle* servhandle, u32 *ptr)
{
    if(!servhandle)servhandle=&acHandle;
    u32 tmp0, tmp1;
    Result ret=0;
    u32 *cmdbuf = getThreadCommandBuffer();

    tmp0 = cmdbuf[0x100>>2];
    tmp1 = cmdbuf[0x104>>2];

    cmdbuf[0] = 0x00010000;
    cmdbuf[0x100>>2] = 0x00800002;
    cmdbuf[0x104>>2] = (u32)ptr;

    if((ret = svcSendSyncRequest(*servhandle))!=0)return ret;

    cmdbuf[0x100>>2] = tmp0;
    cmdbuf[0x104>>2] = tmp1;

    return (Result)cmdbuf[1];
}

// Unknown what this cmd does at the time of writing. (ptr=0x200-byte inbuf/outbuf)
Result ACU_cmd26(Handle* servhandle, u32 *ptr, u8 val)
{
    if(!servhandle)servhandle=&acHandle;
    u32 tmp0, tmp1;
    Result ret=0;
    u32 *cmdbuf = getThreadCommandBuffer();

    tmp0 = cmdbuf[0x100>>2];
    tmp1 = cmdbuf[0x104>>2];

    cmdbuf[0] = 0x00260042;
    cmdbuf[1] = (u32)val;
    cmdbuf[0x100>>2] = 0x00800002;
    cmdbuf[0x104>>2] = (u32)ptr;
    cmdbuf[2] = 0x00800002;
    cmdbuf[3] = (u32)ptr;

    if((ret = svcSendSyncRequest(*servhandle))!=0)return ret;

    cmdbuf[0x100>>2] = tmp0;
    cmdbuf[0x104>>2] = tmp1;

    return (Result)cmdbuf[1];
}

Result ACU_GetWifiStatus(Handle* servhandle, u32 *out)
{
    if(!servhandle)servhandle=&acHandle;
    Result ret=0;
    u32 *cmdbuf = getThreadCommandBuffer();

    cmdbuf[0] = 0x000D0000;

    if((ret = svcSendSyncRequest(*servhandle))!=0)return ret;

    *out = cmdbuf[2];

    return (Result)cmdbuf[1];
}

Result ACU_WaitInternetConnection()
{
    Handle servhandle = 0;
    Result ret=0;
    u32 outval=0;

    if((ret = srvGetServiceHandle(&servhandle, "ac:u"))!=0)return ret;

    while(1)
    {
        ret = ACU_GetWifiStatus(&servhandle, &outval);
        if(ret==0 && outval==1)break;
    }

    svcCloseHandle(servhandle);

    return ret;
}