cper-parse.c - openbmc/libcper - Gitiles

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

 #include <stdio.h>
 #include <string.h>
 #include <json.h>
 #include <libcper/base64.h>
 #include <libcper/Cper.h>
 #include <libcper/cper-parse.h>
 #include <libcper/cper-parse-str.h>
 #include <libcper/cper-utils.h>
 #include <libcper/sections/cper-section.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, long base_pos,
 				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(FILE *cper_file)
 {
 	//Read the current file pointer location as the base of the record.
 	long base_pos = ftell(cper_file);

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

 	//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.\n",
 			       header.SectionCount, i + 1);
 			// Free json objects
 			json_object_put(sections_ir);
 			json_object_put(section_descriptors_ir);
 			json_object_put(header_ir);
 			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, base_pos,
 							 &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);
 	json_object_object_add(parent, "sections", sections_ir);

 	return parent;
 }

 char *cper_to_str_ir(FILE *cper_file)
 {
 	json_object *jobj = cper_to_ir(cper_file);
 	char *str = jobj ? strdup(json_object_to_json_string(jobj)) : NULL;

 	json_object_put(jobj);
 	return str;
 }

 char *cperbuf_to_str_ir(const unsigned char *cper, size_t size)
 {
 	FILE *cper_file = fmemopen((void *)cper, size, "r");

 	return cper_file ? cper_to_str_ir(cper_file) : NULL;
 }

 //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_uint64(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 = bitfield_to_ir(
 		header->ValidationBits, 3, CPER_HEADER_VALID_BITFIELD_NAMES);
 	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_uint64(header->RecordLength));

 	//If a timestamp exists according to validation bits, then add it.
 	if (header->ValidationBits & 0x2) {
 		char timestamp_string[TIMESTAMP_LENGTH];
 		timestamp_to_string(timestamp_string, TIMESTAMP_LENGTH,
 				    &header->TimeStamp);

 		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 & 0x1) {
 		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 & 0x4) {
 		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";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypeCpeGuid)) {
 		notification_type_readable = "CPE";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypeMceGuid)) {
 		notification_type_readable = "MCE";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypePcieGuid)) {
 		notification_type_readable = "PCIe";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypeInitGuid)) {
 		notification_type_readable = "INIT";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypeNmiGuid)) {
 		notification_type_readable = "NMI";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypeBootGuid)) {
 		notification_type_readable = "Boot";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypeDmarGuid)) {
 		notification_type_readable = "DMAr";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypeSeaGuid)) {
 		notification_type_readable = "SEA";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypeSeiGuid)) {
 		notification_type_readable = "SEI";
 	} else if (guid_equal(&header->NotificationType,
 			      &gEfiEventNotificationTypePeiGuid)) {
 		notification_type_readable = "PEI";
 	} else 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 = integer_to_readable_pair(
 		header->Flags,
 		sizeof(CPER_HEADER_FLAG_TYPES_KEYS) / sizeof(int),
 		CPER_HEADER_FLAG_TYPES_KEYS, CPER_HEADER_FLAG_TYPES_VALUES,
 		"Unknown");
 	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, "persistenceInfo",
 			       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_uint64(section_descriptor->SectionOffset));
 	json_object_object_add(
 		section_descriptor_ir, "sectionLength",
 		json_object_new_uint64(section_descriptor->SectionLength));

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

 	//Validation bits.
 	json_object *validation_bits =
 		bitfield_to_ir(section_descriptor->SecValidMask, 2,
 			       CPER_SECTION_DESCRIPTOR_VALID_BITFIELD_NAMES);
 	json_object_object_add(section_descriptor_ir, "validationBits",
 			       validation_bits);

 	//Flag bits.
 	json_object *flags =
 		bitfield_to_ir(section_descriptor->SectionFlags, 8,
 			       CPER_SECTION_DESCRIPTOR_FLAGS_BITFIELD_NAMES);
 	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.
 	const char *section_type_readable = "Unknown";
 	for (size_t i = 0; i < section_definitions_len; i++) {
 		if (guid_equal(section_definitions[i].Guid,
 			       &section_descriptor->SectionType)) {
 			section_type_readable =
 				section_definitions[i].ReadableName;
 			break;
 		}
 	}

 	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 & 0x1) {
 		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 & 0x2) >> 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_uint64(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, long base_pos,
 				EFI_ERROR_SECTION_DESCRIPTOR *descriptor)
 {
 	//Save our current position in the stream.
 	long position = ftell(handle);

 	//Read section as described by the section descriptor.
 	fseek(handle, base_pos + descriptor->SectionOffset, SEEK_SET);
 	void *section = malloc(descriptor->SectionLength);
 	if (fread(section, descriptor->SectionLength, 1, handle) != 1) {
 		printf("Section read failed: Could not read %u bytes from global offset %d.\n",
 		       descriptor->SectionLength, descriptor->SectionOffset);
 		free(section);
 		return NULL;
 	}

 	//Seek back to our original position.
 	fseek(handle, position, SEEK_SET);

 	//Parse section to IR based on GUID.
 	json_object *result = NULL;

 	json_object *section_ir = NULL;
 	int section_converted = 0;
 	for (size_t i = 0; i < section_definitions_len; i++) {
 		if (guid_equal(section_definitions[i].Guid,
 			       &descriptor->SectionType) &&
 		    section_definitions[i].ToIR != NULL) {
 			section_ir = section_definitions[i].ToIR(section);

 			result = json_object_new_object();
 			json_object_object_add(result,
 					       section_definitions[i].ShortName,
 					       section_ir);

 			section_converted = 1;
 			break;
 		}
 	}

 	//Was it an unknown GUID/failed read?
 	if (!section_converted) {
 		//Output the data as formatted base64.
 		int32_t encoded_len = 0;
 		char *encoded = base64_encode(
 			section, descriptor->SectionLength, &encoded_len);
 		if (encoded == NULL) {
 			printf("Failed to allocate encode output buffer. \n");
 		} else {
 			section_ir = json_object_new_object();
 			json_object_object_add(section_ir, "data",
 					       json_object_new_string_len(
 						       encoded, encoded_len));
 			free(encoded);

 			result = json_object_new_object();
 			json_object_object_add(result, "Unknown", section_ir);
 		}
 	}

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

 //Converts a single CPER section, without a header but with a section descriptor, to JSON.
 json_object *cper_single_section_to_ir(FILE *cper_section_file)
 {
 	json_object *ir = json_object_new_object();

 	//Read the current file pointer location as base record position.
 	long base_pos = ftell(cper_section_file);

 	//Read the section descriptor out.
 	EFI_ERROR_SECTION_DESCRIPTOR section_descriptor;
 	if (fread(&section_descriptor, sizeof(EFI_ERROR_SECTION_DESCRIPTOR), 1,
 		  cper_section_file) != 1) {
 		printf("Failed to read section descriptor for CPER single section (fread() returned an unexpected value).\n");
 		return NULL;
 	}

 	//Convert the section descriptor to IR.
 	json_object *section_descriptor_ir =
 		cper_section_descriptor_to_ir(&section_descriptor);
 	json_object_object_add(ir, "sectionDescriptor", section_descriptor_ir);

 	//Parse the single section.
 	json_object *section_ir = cper_section_to_ir(
 		cper_section_file, base_pos, &section_descriptor);
 	json_object_object_add(ir, "section", section_ir);

 	return ir;
 }

 char *cper_single_section_to_str_ir(FILE *cper_section_file)
 {
 	json_object *jobj = cper_single_section_to_ir(cper_section_file);
 	char *str = jobj ? strdup(json_object_to_json_string(jobj)) : NULL;

 	json_object_put(jobj);
 	return str;
 }

 char *cperbuf_single_section_to_str_ir(const unsigned char *cper_section,
 				       size_t size)
 {
 	FILE *cper_section_file = fmemopen((void *)cper_section, size, "r");

 	return cper_section_file ?
 		       cper_single_section_to_str_ir(cper_section_file) :
 		       NULL;
 }
	/**
	* Describes high level functions for converting an entire CPER log, and functions for parsing
	* CPER headers and section descriptions into an intermediate JSON format.
	*
	* Author: Lawrence.Tang@arm.com
	**/

	#include <stdio.h>
	#include <string.h>
	#include <json.h>
	#include <libcper/base64.h>
	#include <libcper/Cper.h>
	#include <libcper/cper-parse.h>
	#include <libcper/cper-parse-str.h>
	#include <libcper/cper-utils.h>
	#include <libcper/sections/cper-section.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, long base_pos,
	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(FILE cper_file)
	{
	//Read the current file pointer location as the base of the record.
	long base_pos = ftell(cper_file);

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

	//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.\n",
	header.SectionCount, i + 1);
	// Free json objects
	json_object_put(sections_ir);
	json_object_put(section_descriptors_ir);
	json_object_put(header_ir);
	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, base_pos,
	&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);
	json_object_object_add(parent, "sections", sections_ir);

	return parent;
	}

	char cper_to_str_ir(FILE cper_file)
	{
	json_object *jobj = cper_to_ir(cper_file);
	char *str = jobj ? strdup(json_object_to_json_string(jobj)) : NULL;

	json_object_put(jobj);
	return str;
	}

	char cperbuf_to_str_ir(const unsigned char cper, size_t size)
	{
	FILE cper_file = fmemopen((void )cper, size, "r");

	return cper_file ? cper_to_str_ir(cper_file) : NULL;
	}

	//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_uint64(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 = bitfield_to_ir(
	header->ValidationBits, 3, CPER_HEADER_VALID_BITFIELD_NAMES);
	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_uint64(header->RecordLength));

	//If a timestamp exists according to validation bits, then add it.
	if (header->ValidationBits & 0x2) {
	char timestamp_string[TIMESTAMP_LENGTH];
	timestamp_to_string(timestamp_string, TIMESTAMP_LENGTH,
	&header->TimeStamp);

	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 & 0x1) {
	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 & 0x4) {
	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";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypeCpeGuid)) {
	notification_type_readable = "CPE";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypeMceGuid)) {
	notification_type_readable = "MCE";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypePcieGuid)) {
	notification_type_readable = "PCIe";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypeInitGuid)) {
	notification_type_readable = "INIT";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypeNmiGuid)) {
	notification_type_readable = "NMI";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypeBootGuid)) {
	notification_type_readable = "Boot";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypeDmarGuid)) {
	notification_type_readable = "DMAr";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypeSeaGuid)) {
	notification_type_readable = "SEA";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypeSeiGuid)) {
	notification_type_readable = "SEI";
	} else if (guid_equal(&header->NotificationType,
	&gEfiEventNotificationTypePeiGuid)) {
	notification_type_readable = "PEI";
	} else 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 = integer_to_readable_pair(
	header->Flags,
	sizeof(CPER_HEADER_FLAG_TYPES_KEYS) / sizeof(int),
	CPER_HEADER_FLAG_TYPES_KEYS, CPER_HEADER_FLAG_TYPES_VALUES,
	"Unknown");
	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, "persistenceInfo",
	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_uint64(section_descriptor->SectionOffset));
	json_object_object_add(
	section_descriptor_ir, "sectionLength",
	json_object_new_uint64(section_descriptor->SectionLength));

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

	//Validation bits.
	json_object *validation_bits =
	bitfield_to_ir(section_descriptor->SecValidMask, 2,
	CPER_SECTION_DESCRIPTOR_VALID_BITFIELD_NAMES);
	json_object_object_add(section_descriptor_ir, "validationBits",
	validation_bits);

	//Flag bits.
	json_object *flags =
	bitfield_to_ir(section_descriptor->SectionFlags, 8,
	CPER_SECTION_DESCRIPTOR_FLAGS_BITFIELD_NAMES);
	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.
	const char *section_type_readable = "Unknown";
	for (size_t i = 0; i < section_definitions_len; i++) {
	if (guid_equal(section_definitions[i].Guid,
	&section_descriptor->SectionType)) {
	section_type_readable =
	section_definitions[i].ReadableName;
	break;
	}
	}

	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 & 0x1) {
	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 & 0x2) >> 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_uint64(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, long base_pos,
	EFI_ERROR_SECTION_DESCRIPTOR *descriptor)
	{
	//Save our current position in the stream.
	long position = ftell(handle);

	//Read section as described by the section descriptor.
	fseek(handle, base_pos + descriptor->SectionOffset, SEEK_SET);
	void *section = malloc(descriptor->SectionLength);
	if (fread(section, descriptor->SectionLength, 1, handle) != 1) {
	printf("Section read failed: Could not read %u bytes from global offset %d.\n",
	descriptor->SectionLength, descriptor->SectionOffset);
	free(section);
	return NULL;
	}

	//Seek back to our original position.
	fseek(handle, position, SEEK_SET);

	//Parse section to IR based on GUID.
	json_object *result = NULL;

	json_object *section_ir = NULL;
	int section_converted = 0;
	for (size_t i = 0; i < section_definitions_len; i++) {
	if (guid_equal(section_definitions[i].Guid,
	&descriptor->SectionType) &&
	section_definitions[i].ToIR != NULL) {
	section_ir = section_definitions[i].ToIR(section);

	result = json_object_new_object();
	json_object_object_add(result,
	section_definitions[i].ShortName,
	section_ir);

	section_converted = 1;
	break;
	}
	}

	//Was it an unknown GUID/failed read?
	if (!section_converted) {
	//Output the data as formatted base64.
	int32_t encoded_len = 0;
	char *encoded = base64_encode(
	section, descriptor->SectionLength, &encoded_len);
	if (encoded == NULL) {
	printf("Failed to allocate encode output buffer. \n");
	} else {
	section_ir = json_object_new_object();
	json_object_object_add(section_ir, "data",
	json_object_new_string_len(
	encoded, encoded_len));
	free(encoded);

	result = json_object_new_object();
	json_object_object_add(result, "Unknown", section_ir);
	}
	}

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

	//Converts a single CPER section, without a header but with a section descriptor, to JSON.
	json_object cper_single_section_to_ir(FILE cper_section_file)
	{
	json_object *ir = json_object_new_object();

	//Read the current file pointer location as base record position.
	long base_pos = ftell(cper_section_file);

	//Read the section descriptor out.
	EFI_ERROR_SECTION_DESCRIPTOR section_descriptor;
	if (fread(&section_descriptor, sizeof(EFI_ERROR_SECTION_DESCRIPTOR), 1,
	cper_section_file) != 1) {
	printf("Failed to read section descriptor for CPER single section (fread() returned an unexpected value).\n");
	return NULL;
	}

	//Convert the section descriptor to IR.
	json_object *section_descriptor_ir =
	cper_section_descriptor_to_ir(&section_descriptor);
	json_object_object_add(ir, "sectionDescriptor", section_descriptor_ir);

	//Parse the single section.
	json_object *section_ir = cper_section_to_ir(
	cper_section_file, base_pos, &section_descriptor);
	json_object_object_add(ir, "section", section_ir);

	return ir;
	}

	char cper_single_section_to_str_ir(FILE cper_section_file)
	{
	json_object *jobj = cper_single_section_to_ir(cper_section_file);
	char *str = jobj ? strdup(json_object_to_json_string(jobj)) : NULL;

	json_object_put(jobj);
	return str;
	}

	char cperbuf_single_section_to_str_ir(const unsigned char cper_section,
	size_t size)
	{
	FILE cper_section_file = fmemopen((void )cper_section, size, "r");

	return cper_section_file ?
	cper_single_section_to_str_ir(cper_section_file) :
	NULL;
	}