cper-parse.c - openbmc/libcper - Gitiles

 /**
  * Describes functions for parsing CPER headers and section descriptions
  * into an intermediate JSON format.
  *
  * Author: Lawrence.Tang@arm.com
  **/

 #include <stdio.h>
 #include "json.h"
 #include "edk/Cper.h"
 #include "cper-parse.h"
 #include "cper-utils.h"
 #include "sections/cper-section-generic.h"

 //Private pre-definitions.
 json_object* cper_header_to_ir(EFI_COMMON_ERROR_RECORD_HEADER* header);
 json_object* cper_section_descriptor_to_ir(EFI_ERROR_SECTION_DESCRIPTOR* section_descriptor);
 json_object* cper_section_to_ir(FILE* handle, EFI_ERROR_SECTION_DESCRIPTOR* descriptor);

 //Reads a CPER log file at the given file location, and returns an intermediate
 //JSON representation of this CPER record.
 json_object* cper_to_ir(const char* filename)
 {
     //Get a handle for the log file.
     FILE* cper_file = fopen(filename, "r");
     if (cper_file == NULL) {
         printf("Could not open CPER record, file handle returned null.");
         return NULL;
     }

     //Ensure this is really a CPER log.
     EFI_COMMON_ERROR_RECORD_HEADER header;
     fseek(cper_file, 0, SEEK_SET);
     if (fread(&header, sizeof(EFI_COMMON_ERROR_RECORD_HEADER), 1, cper_file) != 1)
     {
         printf("Invalid CPER file: Invalid length (log too short).");
         return NULL;
     }

     //Check if the header contains the magic bytes ("CPER").
     if (header.SignatureStart != EFI_ERROR_RECORD_SIGNATURE_START) {
         printf("Invalid CPER file: Invalid header (incorrect signature).");
         return NULL;
     }

     // //Print struct contents (debug).
     // fpos_t file_pos;
     // fgetpos(cper_file, &file_pos);
     // printf("Stream is at position %d.\n", file_pos);
     // printf("SignatureStart: %s\n", (char*)&header.SignatureStart);
     // printf("Revision: %u\n", header.Revision);
     // printf("SectionCount: %u\n", header.SectionCount);
     // printf("Severity: %d\n", header.ErrorSeverity);
     // printf("RecordLength: %d\n", header.RecordLength);

     //Create the header JSON object from the read bytes.
     json_object* header_ir = cper_header_to_ir(&header);

     //Read the appropriate number of section descriptors & sections, and convert them into IR format.
     json_object* section_descriptors_ir = json_object_new_array();
     json_object* sections_ir = json_object_new_array();
     for (int i=0; i<header.SectionCount; i++)
     {
         //Create the section descriptor.
         EFI_ERROR_SECTION_DESCRIPTOR section_descriptor;
         if (fread(&section_descriptor, sizeof(EFI_ERROR_SECTION_DESCRIPTOR), 1, cper_file) != 1)
         {
             printf("Invalid number of section headers: Header states %d sections, could not read section %d.", header.SectionCount, i+1);
             return NULL;
         }
         json_object_array_add(section_descriptors_ir, cper_section_descriptor_to_ir(&section_descriptor));

         //Read the section itself.
         json_object_array_add(sections_ir, cper_section_to_ir(cper_file, &section_descriptor));
     }

     //Add the header, section descriptors, and sections to a parent object.
     json_object* parent = json_object_new_object();
     json_object_object_add(parent, "header", header_ir);
     json_object_object_add(parent, "sectionDescriptors", section_descriptors_ir);

     //...
     return parent;
 }

 //Converts a parsed CPER record header into intermediate JSON object format.
 json_object* cper_header_to_ir(EFI_COMMON_ERROR_RECORD_HEADER* header)
 {
     json_object* header_ir = json_object_new_object();

     //Revision/version information.
     json_object_object_add(header_ir, "revision", revision_to_ir(header->Revision));

     //Section count.
     json_object_object_add(header_ir, "sectionCount", json_object_new_int(header->SectionCount));

     //Error severity (with interpreted string version).
     json_object* error_severity = json_object_new_object();
     json_object_object_add(error_severity, "code", json_object_new_int(header->ErrorSeverity));
     json_object_object_add(error_severity, "name", json_object_new_string(severity_to_string(header->ErrorSeverity)));
     json_object_object_add(header_ir, "severity", error_severity);

     //The validation bits for each section.
     json_object* validation_bits = json_object_new_object();
     json_object_object_add(validation_bits, "platformID", json_object_new_boolean(header->ValidationBits & 0b1));
     json_object_object_add(validation_bits, "timestamp", json_object_new_boolean(header->ValidationBits & 0b10 >> 1));
     json_object_object_add(validation_bits, "partitionID", json_object_new_boolean(header->ValidationBits & 0b100 >> 2));
     json_object_object_add(header_ir, "validationBits", validation_bits);

     //Total length of the record (including headers) in bytes.
     json_object_object_add(header_ir, "recordLength", json_object_new_int(header->RecordLength));

     //If a timestamp exists according to validation bits, then add it.
     if (header->ValidationBits & 0b10)
     {
         char timestamp_string[TIMESTAMP_LENGTH];
         sprintf(timestamp_string, "%02d%02d-%02d-%02dT%02d:%02d:%02d.000",
             header->TimeStamp.Century,
             header->TimeStamp.Year,
             header->TimeStamp.Month,
             header->TimeStamp.Day,
             header->TimeStamp.Hours,
             header->TimeStamp.Minutes,
             header->TimeStamp.Seconds);

         json_object_object_add(header_ir, "timestamp", json_object_new_string(timestamp_string));
         json_object_object_add(header_ir, "timestampIsPrecise", json_object_new_boolean(header->TimeStamp.Flag));
     }

     //If a platform ID exists according to the validation bits, then add it.
     if (header->ValidationBits & 0b1)
     {
         char platform_string[GUID_STRING_LENGTH];
         guid_to_string(platform_string, &header->PlatformID);
         json_object_object_add(header_ir, "platformID", json_object_new_string(platform_string));
     }

     //If a partition ID exists according to the validation bits, then add it.
     if (header->ValidationBits & 0b100)
     {
         char partition_string[GUID_STRING_LENGTH];
         guid_to_string(partition_string, &header->PartitionID);
         json_object_object_add(header_ir, "partitionID", json_object_new_string(partition_string));
     }

     //Creator ID of the header.
     char creator_string[GUID_STRING_LENGTH];
     guid_to_string(creator_string, &header->CreatorID);
     json_object_object_add(header_ir, "creatorID", json_object_new_string(creator_string));

     //Notification type for the header. Some defined types are available.
     json_object* notification_type = json_object_new_object();
     char notification_type_string[GUID_STRING_LENGTH];
     guid_to_string(notification_type_string, &header->NotificationType);
     json_object_object_add(notification_type, "guid", json_object_new_string(notification_type_string));

     //Add the human readable notification type if possible.
     char* notification_type_readable = "Unknown";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeCmcGuid))
         notification_type_readable = "CMC";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeCpeGuid))
         notification_type_readable = "CPE";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeMceGuid))
         notification_type_readable = "MCE";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypePcieGuid))
         notification_type_readable = "PCIe";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeInitGuid))
         notification_type_readable = "INIT";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeNmiGuid))
         notification_type_readable = "NMI";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeBootGuid))
         notification_type_readable = "Boot";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeDmarGuid))
         notification_type_readable = "DMAr";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeSeaGuid))
         notification_type_readable = "SEA";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeSeiGuid))
         notification_type_readable = "SEI";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypePeiGuid))
         notification_type_readable = "PEI";
     if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeCxlGuid))
         notification_type_readable = "CXL Component";
     json_object_object_add(notification_type, "type", json_object_new_string(notification_type_readable));
     json_object_object_add(header_ir, "notificationType", notification_type);

     //The record ID for this record, unique on a given system.
     json_object_object_add(header_ir, "recordID", json_object_new_uint64(header->RecordID));

     //Flag for the record, and a human readable form.
     json_object* flags = json_object_new_object();
     json_object_object_add(flags, "value", json_object_new_int(header->Flags));
     char* flags_readable = "Unknown";
     switch (header->Flags)
     {
         case 1:
             flags_readable = "HW_ERROR_FLAGS_RECOVERED";
             break;
         case 2:
             flags_readable = "HW_ERROR_FLAGS_PREVERR";
             break;
         case 3:
             flags_readable = "HW_ERROR_FLAGS_SIMULATED";
             break;

     }
     json_object_object_add(flags, "type", json_object_new_string(flags_readable));
     json_object_object_add(header_ir, "flags", flags);

     //Persistence information. Outside the scope of specification, so just a uint32 here.
     json_object_object_add(header_ir, "persistenceInformation", json_object_new_uint64(header->PersistenceInfo));
     return header_ir;
 }

 //Converts the given EFI section descriptor into JSON IR format.
 json_object* cper_section_descriptor_to_ir(EFI_ERROR_SECTION_DESCRIPTOR* section_descriptor)
 {
     json_object* section_descriptor_ir = json_object_new_object();

     //The offset of the section from the base of the record header, length.
     json_object_object_add(section_descriptor_ir, "sectionOffset", json_object_new_int(section_descriptor->SectionOffset));
     json_object_object_add(section_descriptor_ir, "sectionLength", json_object_new_int(section_descriptor->SectionLength));

     //Revision.
     json_object_object_add(section_descriptor_ir, "revision", revision_to_ir(section_descriptor->Revision));

     //Validation bits.
     json_object* validation_bits = json_object_new_object();
     json_object_object_add(validation_bits, "fruID", json_object_new_boolean(section_descriptor->SecValidMask & 0b1));
     json_object_object_add(validation_bits, "fruString", json_object_new_boolean((section_descriptor->SecValidMask & 0b10) >> 1));
     json_object_object_add(section_descriptor_ir, "validationBits", validation_bits);

     //Flag bits.
     json_object* flags = json_object_new_object();
     json_object_object_add(flags, "primary", json_object_new_boolean(section_descriptor->SectionFlags >> 31));
     json_object_object_add(flags, "containmentWarning", json_object_new_boolean((section_descriptor->SectionFlags >> 30) & 0b1));
     json_object_object_add(flags, "reset", json_object_new_boolean((section_descriptor->SectionFlags >> 29) & 0b1));
     json_object_object_add(flags, "errorThresholdExceeded", json_object_new_boolean((section_descriptor->SectionFlags >> 28) & 0b1));
     json_object_object_add(flags, "resourceNotAccessible", json_object_new_boolean((section_descriptor->SectionFlags >> 27) & 0b1));
     json_object_object_add(flags, "latentError", json_object_new_boolean((section_descriptor->SectionFlags >> 26) & 0b1));
     json_object_object_add(flags, "propagated", json_object_new_boolean((section_descriptor->SectionFlags >> 25) & 0b1));
     json_object_object_add(flags, "overflow", json_object_new_boolean((section_descriptor->SectionFlags >> 24) & 0b1));
     json_object_object_add(section_descriptor_ir, "flags", flags);

     //Section type (GUID).
     json_object* section_type = json_object_new_object();
     char section_type_string[GUID_STRING_LENGTH];
     guid_to_string(section_type_string, &section_descriptor->SectionType);
     json_object_object_add(section_type, "data", json_object_new_string(section_type_string));

     //Readable section type, if possible.
     char* section_type_readable = "Unknown";
     if (guid_equal(&section_descriptor->SectionType, &gEfiProcessorGenericErrorSectionGuid))
         section_type_readable = "Processor Generic";
     if (guid_equal(&section_descriptor->SectionType, &gEfiIa32X64ProcessorErrorSectionGuid))
         section_type_readable = "IA32/X64";
     //todo: Why does IPF have an overly long GUID?
     // if (guid_equal(&section_descriptor->SectionType, &gEfiIpfProcessorErrorSectionGuid))
     //     section_type_readable = "IPF";
     if (guid_equal(&section_descriptor->SectionType, &gEfiArmProcessorErrorSectionGuid))
         section_type_readable = "ARM";
     if (guid_equal(&section_descriptor->SectionType, &gEfiPlatformMemoryErrorSectionGuid))
         section_type_readable = "Platform Memory";
     if (guid_equal(&section_descriptor->SectionType, &gEfiPcieErrorSectionGuid))
         section_type_readable = "PCIe";
     if (guid_equal(&section_descriptor->SectionType, &gEfiFirmwareErrorSectionGuid))
         section_type_readable = "Firmware Error Record Reference";
     if (guid_equal(&section_descriptor->SectionType, &gEfiPciBusErrorSectionGuid))
         section_type_readable = "PCI/PCI-X Bus";
     if (guid_equal(&section_descriptor->SectionType, &gEfiPciDevErrorSectionGuid))
         section_type_readable = "PCI Component/Device";
     if (guid_equal(&section_descriptor->SectionType, &gEfiDMArGenericErrorSectionGuid))
         section_type_readable = "DMAr Generic";
     if (guid_equal(&section_descriptor->SectionType, &gEfiDirectedIoDMArErrorSectionGuid))
         section_type_readable = "Intel VT for Directed I/O specific DMAr section";
     if (guid_equal(&section_descriptor->SectionType, &gEfiIommuDMArErrorSectionGuid))
         section_type_readable = "IOMMU specific DMAr section";

     //todo: How do you determine if this is a CXL component event?
     // if (guid_equal(&section_descriptor->SectionType, &gEfiProcessorGenericErrorSectionGuid))
     //     section_type_readable = "CXL Component Event";

     json_object_object_add(section_type, "type", json_object_new_string(section_type_readable));
     json_object_object_add(section_descriptor_ir, "sectionType", section_type);

     //If validation bits indicate it exists, add FRU ID.
     if (section_descriptor->SecValidMask & 0b1)
     {
         char fru_id_string[GUID_STRING_LENGTH];
         guid_to_string(fru_id_string, &section_descriptor->FruId);
         json_object_object_add(section_descriptor_ir, "fruID", json_object_new_string(fru_id_string));
     }

     //If validation bits indicate it exists, add FRU text.
     if ((section_descriptor->SecValidMask & 0b10) >> 1)
         json_object_object_add(section_descriptor_ir, "fruText", json_object_new_string(section_descriptor->FruString));

     //Section severity.
     json_object* section_severity = json_object_new_object();
     json_object_object_add(section_severity, "code", json_object_new_int(section_descriptor->Severity));
     json_object_object_add(section_severity, "name", json_object_new_string(severity_to_string(section_descriptor->Severity)));
     json_object_object_add(section_descriptor_ir, "severity", section_severity);

     return section_descriptor_ir;
 }


 //Converts the section described by a single given section descriptor.
 json_object* cper_section_to_ir(FILE* handle, EFI_ERROR_SECTION_DESCRIPTOR* descriptor)
 {
     //Read section as described by the section descriptor.
     fseek(handle, descriptor->SectionOffset, SEEK_SET);
     void* section = malloc(descriptor->SectionLength);
     if (fread(section, descriptor->SectionLength, 1, handle) != 1)
     {
         printf("Section read failed: Could not read %d bytes from global offset %d.",
             descriptor->SectionLength,
             descriptor->SectionOffset);
     }

     json_object* result = NULL;
     if (guid_equal(&descriptor->SectionType, &gEfiProcessorGenericErrorSectionGuid))
         result = cper_section_generic_to_ir(handle, descriptor);
     // if (guid_equal(&descriptor->SectionType, &gEfiIa32X64ProcessorErrorSectionGuid))
     //     result = cper_section_ia32x64_to_ir(handle);
     // //todo: Why does IPF have an overly long GUID?
     // // if (guid_equal(&descriptor->SectionType, &gEfiIpfProcessorErrorSectionGuid))
     // if (guid_equal(&descriptor->SectionType, &gEfiArmProcessorErrorSectionGuid))
     //     result = cper_section_arm_to_ir(handle);
     // if (guid_equal(&descriptor->SectionType, &gEfiPlatformMemoryErrorSectionGuid))
     //     result = cper_section_platform_memory_to_ir(handle);
     // if (guid_equal(&descriptor->SectionType, &gEfiPcieErrorSectionGuid))
     //     result = cper_section_pcie_to_ir(handle);
     // if (guid_equal(&descriptor->SectionType, &gEfiFirmwareErrorSectionGuid))
     //     result = cper_section_firmware_error_to_ir(handle);
     // if (guid_equal(&descriptor->SectionType, &gEfiPciBusErrorSectionGuid))
     //     result = cper_section_pci_bus_to_ir(handle);
     // if (guid_equal(&descriptor->SectionType, &gEfiPciDevErrorSectionGuid))
     //     result = cper_section_pci_dev_to_ir(handle);
     // if (guid_equal(&descriptor->SectionType, &gEfiDMArGenericErrorSectionGuid))
     //     result = cper_section_dmar_generic_to_ir(handle);
     // if (guid_equal(&descriptor->SectionType, &gEfiDirectedIoDMArErrorSectionGuid))
     //     result = cper_section_intel_io_dma_to_ir(handle);
     // if (guid_equal(&descriptor->SectionType, &gEfiIommuDMArErrorSectionGuid))
     //     result = cper_section_iommu_dma_to_ir(handle);

     //Free section memory, return result.
     free(section);
     return result;
 }
	/**
	* Describes functions for parsing CPER headers and section descriptions
	* into an intermediate JSON format.
	*
	* Author: Lawrence.Tang@arm.com
	**/

	#include <stdio.h>
	#include "json.h"
	#include "edk/Cper.h"
	#include "cper-parse.h"
	#include "cper-utils.h"
	#include "sections/cper-section-generic.h"

	//Private pre-definitions.
	json_object* cper_header_to_ir(EFI_COMMON_ERROR_RECORD_HEADER* header);
	json_object* cper_section_descriptor_to_ir(EFI_ERROR_SECTION_DESCRIPTOR* section_descriptor);
	json_object* cper_section_to_ir(FILE* handle, EFI_ERROR_SECTION_DESCRIPTOR* descriptor);

	//Reads a CPER log file at the given file location, and returns an intermediate
	//JSON representation of this CPER record.
	json_object* cper_to_ir(const char* filename)
	{
	//Get a handle for the log file.
	FILE* cper_file = fopen(filename, "r");
	if (cper_file == NULL) {
	printf("Could not open CPER record, file handle returned null.");
	return NULL;
	}

	//Ensure this is really a CPER log.
	EFI_COMMON_ERROR_RECORD_HEADER header;
	fseek(cper_file, 0, SEEK_SET);
	if (fread(&header, sizeof(EFI_COMMON_ERROR_RECORD_HEADER), 1, cper_file) != 1)
	{
	printf("Invalid CPER file: Invalid length (log too short).");
	return NULL;
	}

	//Check if the header contains the magic bytes ("CPER").
	if (header.SignatureStart != EFI_ERROR_RECORD_SIGNATURE_START) {
	printf("Invalid CPER file: Invalid header (incorrect signature).");
	return NULL;
	}

	// //Print struct contents (debug).
	// fpos_t file_pos;
	// fgetpos(cper_file, &file_pos);
	// printf("Stream is at position %d.\n", file_pos);
	// printf("SignatureStart: %s\n", (char*)&header.SignatureStart);
	// printf("Revision: %u\n", header.Revision);
	// printf("SectionCount: %u\n", header.SectionCount);
	// printf("Severity: %d\n", header.ErrorSeverity);
	// printf("RecordLength: %d\n", header.RecordLength);

	//Create the header JSON object from the read bytes.
	json_object* header_ir = cper_header_to_ir(&header);

	//Read the appropriate number of section descriptors & sections, and convert them into IR format.
	json_object* section_descriptors_ir = json_object_new_array();
	json_object* sections_ir = json_object_new_array();
	for (int i=0; i<header.SectionCount; i++)
	{
	//Create the section descriptor.
	EFI_ERROR_SECTION_DESCRIPTOR section_descriptor;
	if (fread(&section_descriptor, sizeof(EFI_ERROR_SECTION_DESCRIPTOR), 1, cper_file) != 1)
	{
	printf("Invalid number of section headers: Header states %d sections, could not read section %d.", header.SectionCount, i+1);
	return NULL;
	}
	json_object_array_add(section_descriptors_ir, cper_section_descriptor_to_ir(&section_descriptor));

	//Read the section itself.
	json_object_array_add(sections_ir, cper_section_to_ir(cper_file, &section_descriptor));
	}

	//Add the header, section descriptors, and sections to a parent object.
	json_object* parent = json_object_new_object();
	json_object_object_add(parent, "header", header_ir);
	json_object_object_add(parent, "sectionDescriptors", section_descriptors_ir);

	//...
	return parent;
	}

	//Converts a parsed CPER record header into intermediate JSON object format.
	json_object* cper_header_to_ir(EFI_COMMON_ERROR_RECORD_HEADER* header)
	{
	json_object* header_ir = json_object_new_object();

	//Revision/version information.
	json_object_object_add(header_ir, "revision", revision_to_ir(header->Revision));

	//Section count.
	json_object_object_add(header_ir, "sectionCount", json_object_new_int(header->SectionCount));

	//Error severity (with interpreted string version).
	json_object* error_severity = json_object_new_object();
	json_object_object_add(error_severity, "code", json_object_new_int(header->ErrorSeverity));
	json_object_object_add(error_severity, "name", json_object_new_string(severity_to_string(header->ErrorSeverity)));
	json_object_object_add(header_ir, "severity", error_severity);

	//The validation bits for each section.
	json_object* validation_bits = json_object_new_object();
	json_object_object_add(validation_bits, "platformID", json_object_new_boolean(header->ValidationBits & 0b1));
	json_object_object_add(validation_bits, "timestamp", json_object_new_boolean(header->ValidationBits & 0b10 >> 1));
	json_object_object_add(validation_bits, "partitionID", json_object_new_boolean(header->ValidationBits & 0b100 >> 2));
	json_object_object_add(header_ir, "validationBits", validation_bits);

	//Total length of the record (including headers) in bytes.
	json_object_object_add(header_ir, "recordLength", json_object_new_int(header->RecordLength));

	//If a timestamp exists according to validation bits, then add it.
	if (header->ValidationBits & 0b10)
	{
	char timestamp_string[TIMESTAMP_LENGTH];
	sprintf(timestamp_string, "%02d%02d-%02d-%02dT%02d:%02d:%02d.000",
	header->TimeStamp.Century,
	header->TimeStamp.Year,
	header->TimeStamp.Month,
	header->TimeStamp.Day,
	header->TimeStamp.Hours,
	header->TimeStamp.Minutes,
	header->TimeStamp.Seconds);

	json_object_object_add(header_ir, "timestamp", json_object_new_string(timestamp_string));
	json_object_object_add(header_ir, "timestampIsPrecise", json_object_new_boolean(header->TimeStamp.Flag));
	}

	//If a platform ID exists according to the validation bits, then add it.
	if (header->ValidationBits & 0b1)
	{
	char platform_string[GUID_STRING_LENGTH];
	guid_to_string(platform_string, &header->PlatformID);
	json_object_object_add(header_ir, "platformID", json_object_new_string(platform_string));
	}

	//If a partition ID exists according to the validation bits, then add it.
	if (header->ValidationBits & 0b100)
	{
	char partition_string[GUID_STRING_LENGTH];
	guid_to_string(partition_string, &header->PartitionID);
	json_object_object_add(header_ir, "partitionID", json_object_new_string(partition_string));
	}

	//Creator ID of the header.
	char creator_string[GUID_STRING_LENGTH];
	guid_to_string(creator_string, &header->CreatorID);
	json_object_object_add(header_ir, "creatorID", json_object_new_string(creator_string));

	//Notification type for the header. Some defined types are available.
	json_object* notification_type = json_object_new_object();
	char notification_type_string[GUID_STRING_LENGTH];
	guid_to_string(notification_type_string, &header->NotificationType);
	json_object_object_add(notification_type, "guid", json_object_new_string(notification_type_string));

	//Add the human readable notification type if possible.
	char* notification_type_readable = "Unknown";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeCmcGuid))
	notification_type_readable = "CMC";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeCpeGuid))
	notification_type_readable = "CPE";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeMceGuid))
	notification_type_readable = "MCE";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypePcieGuid))
	notification_type_readable = "PCIe";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeInitGuid))
	notification_type_readable = "INIT";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeNmiGuid))
	notification_type_readable = "NMI";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeBootGuid))
	notification_type_readable = "Boot";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeDmarGuid))
	notification_type_readable = "DMAr";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeSeaGuid))
	notification_type_readable = "SEA";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeSeiGuid))
	notification_type_readable = "SEI";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypePeiGuid))
	notification_type_readable = "PEI";
	if (guid_equal(&header->NotificationType, &gEfiEventNotificationTypeCxlGuid))
	notification_type_readable = "CXL Component";
	json_object_object_add(notification_type, "type", json_object_new_string(notification_type_readable));
	json_object_object_add(header_ir, "notificationType", notification_type);

	//The record ID for this record, unique on a given system.
	json_object_object_add(header_ir, "recordID", json_object_new_uint64(header->RecordID));

	//Flag for the record, and a human readable form.
	json_object* flags = json_object_new_object();
	json_object_object_add(flags, "value", json_object_new_int(header->Flags));
	char* flags_readable = "Unknown";
	switch (header->Flags)
	{
	case 1:
	flags_readable = "HW_ERROR_FLAGS_RECOVERED";
	break;
	case 2:
	flags_readable = "HW_ERROR_FLAGS_PREVERR";
	break;
	case 3:
	flags_readable = "HW_ERROR_FLAGS_SIMULATED";
	break;

	}
	json_object_object_add(flags, "type", json_object_new_string(flags_readable));
	json_object_object_add(header_ir, "flags", flags);

	//Persistence information. Outside the scope of specification, so just a uint32 here.
	json_object_object_add(header_ir, "persistenceInformation", json_object_new_uint64(header->PersistenceInfo));
	return header_ir;
	}

	//Converts the given EFI section descriptor into JSON IR format.
	json_object* cper_section_descriptor_to_ir(EFI_ERROR_SECTION_DESCRIPTOR* section_descriptor)
	{
	json_object* section_descriptor_ir = json_object_new_object();

	//The offset of the section from the base of the record header, length.
	json_object_object_add(section_descriptor_ir, "sectionOffset", json_object_new_int(section_descriptor->SectionOffset));
	json_object_object_add(section_descriptor_ir, "sectionLength", json_object_new_int(section_descriptor->SectionLength));

	//Revision.
	json_object_object_add(section_descriptor_ir, "revision", revision_to_ir(section_descriptor->Revision));

	//Validation bits.
	json_object* validation_bits = json_object_new_object();
	json_object_object_add(validation_bits, "fruID", json_object_new_boolean(section_descriptor->SecValidMask & 0b1));
	json_object_object_add(validation_bits, "fruString", json_object_new_boolean((section_descriptor->SecValidMask & 0b10) >> 1));
	json_object_object_add(section_descriptor_ir, "validationBits", validation_bits);

	//Flag bits.
	json_object* flags = json_object_new_object();
	json_object_object_add(flags, "primary", json_object_new_boolean(section_descriptor->SectionFlags >> 31));
	json_object_object_add(flags, "containmentWarning", json_object_new_boolean((section_descriptor->SectionFlags >> 30) & 0b1));
	json_object_object_add(flags, "reset", json_object_new_boolean((section_descriptor->SectionFlags >> 29) & 0b1));
	json_object_object_add(flags, "errorThresholdExceeded", json_object_new_boolean((section_descriptor->SectionFlags >> 28) & 0b1));
	json_object_object_add(flags, "resourceNotAccessible", json_object_new_boolean((section_descriptor->SectionFlags >> 27) & 0b1));
	json_object_object_add(flags, "latentError", json_object_new_boolean((section_descriptor->SectionFlags >> 26) & 0b1));
	json_object_object_add(flags, "propagated", json_object_new_boolean((section_descriptor->SectionFlags >> 25) & 0b1));
	json_object_object_add(flags, "overflow", json_object_new_boolean((section_descriptor->SectionFlags >> 24) & 0b1));
	json_object_object_add(section_descriptor_ir, "flags", flags);

	//Section type (GUID).
	json_object* section_type = json_object_new_object();
	char section_type_string[GUID_STRING_LENGTH];
	guid_to_string(section_type_string, &section_descriptor->SectionType);
	json_object_object_add(section_type, "data", json_object_new_string(section_type_string));

	//Readable section type, if possible.
	char* section_type_readable = "Unknown";
	if (guid_equal(&section_descriptor->SectionType, &gEfiProcessorGenericErrorSectionGuid))
	section_type_readable = "Processor Generic";
	if (guid_equal(&section_descriptor->SectionType, &gEfiIa32X64ProcessorErrorSectionGuid))
	section_type_readable = "IA32/X64";
	//todo: Why does IPF have an overly long GUID?
	// if (guid_equal(&section_descriptor->SectionType, &gEfiIpfProcessorErrorSectionGuid))
	// section_type_readable = "IPF";
	if (guid_equal(&section_descriptor->SectionType, &gEfiArmProcessorErrorSectionGuid))
	section_type_readable = "ARM";
	if (guid_equal(&section_descriptor->SectionType, &gEfiPlatformMemoryErrorSectionGuid))
	section_type_readable = "Platform Memory";
	if (guid_equal(&section_descriptor->SectionType, &gEfiPcieErrorSectionGuid))
	section_type_readable = "PCIe";
	if (guid_equal(&section_descriptor->SectionType, &gEfiFirmwareErrorSectionGuid))
	section_type_readable = "Firmware Error Record Reference";
	if (guid_equal(&section_descriptor->SectionType, &gEfiPciBusErrorSectionGuid))
	section_type_readable = "PCI/PCI-X Bus";
	if (guid_equal(&section_descriptor->SectionType, &gEfiPciDevErrorSectionGuid))
	section_type_readable = "PCI Component/Device";
	if (guid_equal(&section_descriptor->SectionType, &gEfiDMArGenericErrorSectionGuid))
	section_type_readable = "DMAr Generic";
	if (guid_equal(&section_descriptor->SectionType, &gEfiDirectedIoDMArErrorSectionGuid))
	section_type_readable = "Intel VT for Directed I/O specific DMAr section";
	if (guid_equal(&section_descriptor->SectionType, &gEfiIommuDMArErrorSectionGuid))
	section_type_readable = "IOMMU specific DMAr section";

	//todo: How do you determine if this is a CXL component event?
	// if (guid_equal(&section_descriptor->SectionType, &gEfiProcessorGenericErrorSectionGuid))
	// section_type_readable = "CXL Component Event";

	json_object_object_add(section_type, "type", json_object_new_string(section_type_readable));
	json_object_object_add(section_descriptor_ir, "sectionType", section_type);

	//If validation bits indicate it exists, add FRU ID.
	if (section_descriptor->SecValidMask & 0b1)
	{
	char fru_id_string[GUID_STRING_LENGTH];
	guid_to_string(fru_id_string, &section_descriptor->FruId);
	json_object_object_add(section_descriptor_ir, "fruID", json_object_new_string(fru_id_string));
	}

	//If validation bits indicate it exists, add FRU text.
	if ((section_descriptor->SecValidMask & 0b10) >> 1)
	json_object_object_add(section_descriptor_ir, "fruText", json_object_new_string(section_descriptor->FruString));

	//Section severity.
	json_object* section_severity = json_object_new_object();
	json_object_object_add(section_severity, "code", json_object_new_int(section_descriptor->Severity));
	json_object_object_add(section_severity, "name", json_object_new_string(severity_to_string(section_descriptor->Severity)));
	json_object_object_add(section_descriptor_ir, "severity", section_severity);

	return section_descriptor_ir;
	}


	//Converts the section described by a single given section descriptor.
	json_object* cper_section_to_ir(FILE* handle, EFI_ERROR_SECTION_DESCRIPTOR* descriptor)
	{
	//Read section as described by the section descriptor.
	fseek(handle, descriptor->SectionOffset, SEEK_SET);
	void* section = malloc(descriptor->SectionLength);
	if (fread(section, descriptor->SectionLength, 1, handle) != 1)
	{
	printf("Section read failed: Could not read %d bytes from global offset %d.",
	descriptor->SectionLength,
	descriptor->SectionOffset);
	}

	json_object* result = NULL;
	if (guid_equal(&descriptor->SectionType, &gEfiProcessorGenericErrorSectionGuid))
	result = cper_section_generic_to_ir(handle, descriptor);
	// if (guid_equal(&descriptor->SectionType, &gEfiIa32X64ProcessorErrorSectionGuid))
	// result = cper_section_ia32x64_to_ir(handle);
	// //todo: Why does IPF have an overly long GUID?
	// // if (guid_equal(&descriptor->SectionType, &gEfiIpfProcessorErrorSectionGuid))
	// if (guid_equal(&descriptor->SectionType, &gEfiArmProcessorErrorSectionGuid))
	// result = cper_section_arm_to_ir(handle);
	// if (guid_equal(&descriptor->SectionType, &gEfiPlatformMemoryErrorSectionGuid))
	// result = cper_section_platform_memory_to_ir(handle);
	// if (guid_equal(&descriptor->SectionType, &gEfiPcieErrorSectionGuid))
	// result = cper_section_pcie_to_ir(handle);
	// if (guid_equal(&descriptor->SectionType, &gEfiFirmwareErrorSectionGuid))
	// result = cper_section_firmware_error_to_ir(handle);
	// if (guid_equal(&descriptor->SectionType, &gEfiPciBusErrorSectionGuid))
	// result = cper_section_pci_bus_to_ir(handle);
	// if (guid_equal(&descriptor->SectionType, &gEfiPciDevErrorSectionGuid))
	// result = cper_section_pci_dev_to_ir(handle);
	// if (guid_equal(&descriptor->SectionType, &gEfiDMArGenericErrorSectionGuid))
	// result = cper_section_dmar_generic_to_ir(handle);
	// if (guid_equal(&descriptor->SectionType, &gEfiDirectedIoDMArErrorSectionGuid))
	// result = cper_section_intel_io_dma_to_ir(handle);
	// if (guid_equal(&descriptor->SectionType, &gEfiIommuDMArErrorSectionGuid))
	// result = cper_section_iommu_dma_to_ir(handle);

	//Free section memory, return result.
	free(section);
	return result;
	}