int base64decode(byte *param_1,int param_2,int *param_3)

{

  byte bVar1;

  byte *pbVar2;

  char cVar3;

  char *pcVar4;

  int iVar5;

  byte *pbVar6;

  char local_18 [8];

  if ((param_1 == (byte *)0x0) || (param_2 == 0)) {

    *param_3 = 0;

    return 0;

  }

  pbVar2 = (byte *)malloc(((int)(((uint)(param_2 * 3 >> 0x1f) >> 0x1e) + param_2 * 3) >> 2) + 4)   //possible issue identified - semgrep

  *param_3 = (int)pbVar2;

  pbVar6 = param_1 + param_2;

LAB_004151ac:

  if (pbVar6 < param_1) {

    iVar5 = *param_3;

    *pbVar2 = 0;

    return (int)pbVar2 - iVar5;

  }

  iVar5 = 0;

  pcVar4 = local_18;

LAB_004150e8:

  do {

    bVar1 = *param_1;

    param_1 = param_1 + 1;

    if ((bVar1 - 0x2b & 0xff) < 0x50) {

      cVar3 = "socket(0x%x), fd(%d), param(0x%x), handler(0x%x)\n"[bVar1 + 0x25]   //possible issue identified - semgrep

      if (cVar3 != '\0') {

        if (cVar3 == '$') goto LAB_00415128;

        cVar3 = cVar3 + -0x3d   //possible issue identified - semgrep

      }

    }

    else {

LAB_00415128:

      cVar3 = '\0';

    }

    if (pbVar6 < param_1) {

      *pcVar4 = '\0';

    }

    else {

      if (cVar3 == '\0') goto LAB_004150e8;

      *pcVar4 = cVar3 + -1;

      iVar5 = iVar5 + 1;

    }

    if ((pcVar4 == local_18 + 3) || (pcVar4 = pcVar4 + 1, pbVar6 < param_1)) break;

  } while( true );

  if (iVar5 != 0) {

    *pbVar2 = local_18[0] << 2 | (byte)local_18[1] >> 4;

    pbVar2[1] = local_18[1] << 4 | (byte)local_18[2] >> 2;

    pbVar2[2] = local_18[2] << 6 | local_18[3];

    pbVar2 = pbVar2 + iVar5 + -1;

  }

  goto LAB_004151ac;

}