1 /**
2  * Describes functions for converting firmware CPER sections from binary and JSON format
3  * into an intermediate format.
4  *
5  * Author: Lawrence.Tang@arm.com
6  **/
7 #include <stdio.h>
8 #include <json.h>
9 #include "../edk/Cper.h"
10 #include "../cper-utils.h"
11 #include "cper-section-firmware.h"
12 
13 //Converts a single firmware CPER section into JSON IR.
14 json_object *cper_section_firmware_to_ir(void *section)
15 {
16 	EFI_FIRMWARE_ERROR_DATA *firmware_error =
17 		(EFI_FIRMWARE_ERROR_DATA *)section;
18 	json_object *section_ir = json_object_new_object();
19 
20 	//Record type.
21 	json_object *record_type = integer_to_readable_pair(
22 		firmware_error->ErrorType, 3, FIRMWARE_ERROR_RECORD_TYPES_KEYS,
23 		FIRMWARE_ERROR_RECORD_TYPES_VALUES, "Unknown (Reserved)");
24 	json_object_object_add(section_ir, "errorRecordType", record_type);
25 
26 	//Revision, record identifier.
27 	json_object_object_add(section_ir, "revision",
28 			       json_object_new_int(firmware_error->Revision));
29 	json_object_object_add(
30 		section_ir, "recordID",
31 		json_object_new_uint64(firmware_error->RecordId));
32 
33 	//Record GUID.
34 	char record_id_guid[GUID_STRING_LENGTH];
35 	guid_to_string(record_id_guid, &firmware_error->RecordIdGuid);
36 	json_object_object_add(section_ir, "recordIDGUID",
37 			       json_object_new_string(record_id_guid));
38 
39 	return section_ir;
40 }
41 
42 //Converts a single firmware CPER-JSON section into CPER binary, outputting to the given stream.
43 void ir_section_firmware_to_cper(json_object *section, FILE *out)
44 {
45 	EFI_FIRMWARE_ERROR_DATA *section_cper =
46 		(EFI_FIRMWARE_ERROR_DATA *)calloc(
47 			1, sizeof(EFI_FIRMWARE_ERROR_DATA));
48 
49 	//Record fields.
50 	section_cper->ErrorType = readable_pair_to_integer(
51 		json_object_object_get(section, "errorRecordType"));
52 	section_cper->Revision = json_object_get_int(
53 		json_object_object_get(section, "revision"));
54 	section_cper->RecordId = json_object_get_uint64(
55 		json_object_object_get(section, "recordID"));
56 	string_to_guid(&section_cper->RecordIdGuid,
57 		       json_object_get_string(json_object_object_get(
58 			       section, "recordIDGUID")));
59 
60 	//Write to stream, free resources.
61 	fwrite(section_cper, sizeof(EFI_FIRMWARE_ERROR_DATA), 1, out);
62 	fflush(out);
63 	free(section_cper);
64 }
65