11b0b00e3SLawrence Tang /** 22800cd8eSLawrence Tang * Describes high level functions for converting an entire CPER log, and functions for parsing 32800cd8eSLawrence Tang * CPER headers and section descriptions into an intermediate JSON format. 41b0b00e3SLawrence Tang * 51b0b00e3SLawrence Tang * Author: Lawrence.Tang@arm.com 61b0b00e3SLawrence Tang **/ 71b0b00e3SLawrence Tang 81b0b00e3SLawrence Tang #include <stdio.h> 95202bbb4SLawrence Tang #include <json.h> 10*a7d2cdddSEd Tanous #include "base64.h" 111b0b00e3SLawrence Tang #include "edk/Cper.h" 121b0b00e3SLawrence Tang #include "cper-parse.h" 131b0b00e3SLawrence Tang #include "cper-utils.h" 14580423feSLawrence Tang #include "sections/cper-section.h" 151b0b00e3SLawrence Tang 161b0b00e3SLawrence Tang //Private pre-definitions. 171b0b00e3SLawrence Tang json_object *cper_header_to_ir(EFI_COMMON_ERROR_RECORD_HEADER *header); 18e407b4c8SLawrence Tang json_object * 19e407b4c8SLawrence Tang cper_section_descriptor_to_ir(EFI_ERROR_SECTION_DESCRIPTOR *section_descriptor); 2094153499SLawrence Tang json_object *cper_section_to_ir(FILE *handle, long base_pos, 21e407b4c8SLawrence Tang EFI_ERROR_SECTION_DESCRIPTOR *descriptor); 221b0b00e3SLawrence Tang 231b0b00e3SLawrence Tang //Reads a CPER log file at the given file location, and returns an intermediate 241b0b00e3SLawrence Tang //JSON representation of this CPER record. 25f0f95574SLawrence Tang json_object *cper_to_ir(FILE *cper_file) 261b0b00e3SLawrence Tang { 2794153499SLawrence Tang //Read the current file pointer location as the base of the record. 2894153499SLawrence Tang long base_pos = ftell(cper_file); 2994153499SLawrence Tang 301b0b00e3SLawrence Tang //Ensure this is really a CPER log. 311b0b00e3SLawrence Tang EFI_COMMON_ERROR_RECORD_HEADER header; 32e407b4c8SLawrence Tang if (fread(&header, sizeof(EFI_COMMON_ERROR_RECORD_HEADER), 1, 33e407b4c8SLawrence Tang cper_file) != 1) { 3402c801a5SLawrence Tang printf("Invalid CPER file: Invalid length (log too short).\n"); 351b0b00e3SLawrence Tang return NULL; 361b0b00e3SLawrence Tang } 371b0b00e3SLawrence Tang 381b0b00e3SLawrence Tang //Check if the header contains the magic bytes ("CPER"). 391b0b00e3SLawrence Tang if (header.SignatureStart != EFI_ERROR_RECORD_SIGNATURE_START) { 4002c801a5SLawrence Tang printf("Invalid CPER file: Invalid header (incorrect signature).\n"); 411b0b00e3SLawrence Tang return NULL; 421b0b00e3SLawrence Tang } 431b0b00e3SLawrence Tang 441b0b00e3SLawrence Tang //Create the header JSON object from the read bytes. 451b0b00e3SLawrence Tang json_object *header_ir = cper_header_to_ir(&header); 461b0b00e3SLawrence Tang 471b0b00e3SLawrence Tang //Read the appropriate number of section descriptors & sections, and convert them into IR format. 481b0b00e3SLawrence Tang json_object *section_descriptors_ir = json_object_new_array(); 491b0b00e3SLawrence Tang json_object *sections_ir = json_object_new_array(); 50e407b4c8SLawrence Tang for (int i = 0; i < header.SectionCount; i++) { 511b0b00e3SLawrence Tang //Create the section descriptor. 521b0b00e3SLawrence Tang EFI_ERROR_SECTION_DESCRIPTOR section_descriptor; 53e407b4c8SLawrence Tang if (fread(§ion_descriptor, 54e407b4c8SLawrence Tang sizeof(EFI_ERROR_SECTION_DESCRIPTOR), 1, 55e407b4c8SLawrence Tang cper_file) != 1) { 56e407b4c8SLawrence Tang printf("Invalid number of section headers: Header states %d sections, could not read section %d.\n", 57e407b4c8SLawrence Tang header.SectionCount, i + 1); 581b0b00e3SLawrence Tang return NULL; 591b0b00e3SLawrence Tang } 60e407b4c8SLawrence Tang json_object_array_add( 61e407b4c8SLawrence Tang section_descriptors_ir, 62e407b4c8SLawrence Tang cper_section_descriptor_to_ir(§ion_descriptor)); 631b0b00e3SLawrence Tang 641b0b00e3SLawrence Tang //Read the section itself. 65e407b4c8SLawrence Tang json_object_array_add(sections_ir, 6694153499SLawrence Tang cper_section_to_ir(cper_file, base_pos, 67e407b4c8SLawrence Tang §ion_descriptor)); 681b0b00e3SLawrence Tang } 691b0b00e3SLawrence Tang 701b0b00e3SLawrence Tang //Add the header, section descriptors, and sections to a parent object. 711b0b00e3SLawrence Tang json_object *parent = json_object_new_object(); 721b0b00e3SLawrence Tang json_object_object_add(parent, "header", header_ir); 73e407b4c8SLawrence Tang json_object_object_add(parent, "sectionDescriptors", 74e407b4c8SLawrence Tang section_descriptors_ir); 752800cd8eSLawrence Tang json_object_object_add(parent, "sections", sections_ir); 761b0b00e3SLawrence Tang 771b0b00e3SLawrence Tang return parent; 781b0b00e3SLawrence Tang } 791b0b00e3SLawrence Tang 801b0b00e3SLawrence Tang //Converts a parsed CPER record header into intermediate JSON object format. 811b0b00e3SLawrence Tang json_object *cper_header_to_ir(EFI_COMMON_ERROR_RECORD_HEADER *header) 821b0b00e3SLawrence Tang { 831b0b00e3SLawrence Tang json_object *header_ir = json_object_new_object(); 841b0b00e3SLawrence Tang 851b0b00e3SLawrence Tang //Revision/version information. 86e407b4c8SLawrence Tang json_object_object_add(header_ir, "revision", 87e407b4c8SLawrence Tang revision_to_ir(header->Revision)); 881b0b00e3SLawrence Tang 891b0b00e3SLawrence Tang //Section count. 90e407b4c8SLawrence Tang json_object_object_add(header_ir, "sectionCount", 91e407b4c8SLawrence Tang json_object_new_int(header->SectionCount)); 921b0b00e3SLawrence Tang 931b0b00e3SLawrence Tang //Error severity (with interpreted string version). 941b0b00e3SLawrence Tang json_object *error_severity = json_object_new_object(); 95e407b4c8SLawrence Tang json_object_object_add(error_severity, "code", 96e407b4c8SLawrence Tang json_object_new_uint64(header->ErrorSeverity)); 97e407b4c8SLawrence Tang json_object_object_add(error_severity, "name", 98e407b4c8SLawrence Tang json_object_new_string(severity_to_string( 99e407b4c8SLawrence Tang header->ErrorSeverity))); 1001b0b00e3SLawrence Tang json_object_object_add(header_ir, "severity", error_severity); 1011b0b00e3SLawrence Tang 1021b0b00e3SLawrence Tang //The validation bits for each section. 103e407b4c8SLawrence Tang json_object *validation_bits = bitfield_to_ir( 104e407b4c8SLawrence Tang header->ValidationBits, 3, CPER_HEADER_VALID_BITFIELD_NAMES); 1051b0b00e3SLawrence Tang json_object_object_add(header_ir, "validationBits", validation_bits); 1061b0b00e3SLawrence Tang 1071b0b00e3SLawrence Tang //Total length of the record (including headers) in bytes. 108e407b4c8SLawrence Tang json_object_object_add(header_ir, "recordLength", 109e407b4c8SLawrence Tang json_object_new_uint64(header->RecordLength)); 1101b0b00e3SLawrence Tang 1111b0b00e3SLawrence Tang //If a timestamp exists according to validation bits, then add it. 112f8fc7052SJohn Chung if (header->ValidationBits & 0x2) { 1131b0b00e3SLawrence Tang char timestamp_string[TIMESTAMP_LENGTH]; 114aacf0e26SLawrence Tang timestamp_to_string(timestamp_string, &header->TimeStamp); 1151b0b00e3SLawrence Tang 116e407b4c8SLawrence Tang json_object_object_add( 117e407b4c8SLawrence Tang header_ir, "timestamp", 118e407b4c8SLawrence Tang json_object_new_string(timestamp_string)); 119e407b4c8SLawrence Tang json_object_object_add( 120e407b4c8SLawrence Tang header_ir, "timestampIsPrecise", 121e407b4c8SLawrence Tang json_object_new_boolean(header->TimeStamp.Flag)); 1221b0b00e3SLawrence Tang } 1231b0b00e3SLawrence Tang 1241b0b00e3SLawrence Tang //If a platform ID exists according to the validation bits, then add it. 125f8fc7052SJohn Chung if (header->ValidationBits & 0x1) { 1261b0b00e3SLawrence Tang char platform_string[GUID_STRING_LENGTH]; 1271b0b00e3SLawrence Tang guid_to_string(platform_string, &header->PlatformID); 128e407b4c8SLawrence Tang json_object_object_add(header_ir, "platformID", 129e407b4c8SLawrence Tang json_object_new_string(platform_string)); 1301b0b00e3SLawrence Tang } 1311b0b00e3SLawrence Tang 1321b0b00e3SLawrence Tang //If a partition ID exists according to the validation bits, then add it. 133f8fc7052SJohn Chung if (header->ValidationBits & 0x4) { 1341b0b00e3SLawrence Tang char partition_string[GUID_STRING_LENGTH]; 1351b0b00e3SLawrence Tang guid_to_string(partition_string, &header->PartitionID); 136e407b4c8SLawrence Tang json_object_object_add( 137e407b4c8SLawrence Tang header_ir, "partitionID", 138e407b4c8SLawrence Tang json_object_new_string(partition_string)); 1391b0b00e3SLawrence Tang } 1401b0b00e3SLawrence Tang 1411b0b00e3SLawrence Tang //Creator ID of the header. 1421b0b00e3SLawrence Tang char creator_string[GUID_STRING_LENGTH]; 1431b0b00e3SLawrence Tang guid_to_string(creator_string, &header->CreatorID); 144e407b4c8SLawrence Tang json_object_object_add(header_ir, "creatorID", 145e407b4c8SLawrence Tang json_object_new_string(creator_string)); 1461b0b00e3SLawrence Tang 1471b0b00e3SLawrence Tang //Notification type for the header. Some defined types are available. 1481b0b00e3SLawrence Tang json_object *notification_type = json_object_new_object(); 1491b0b00e3SLawrence Tang char notification_type_string[GUID_STRING_LENGTH]; 1501b0b00e3SLawrence Tang guid_to_string(notification_type_string, &header->NotificationType); 151e407b4c8SLawrence Tang json_object_object_add( 152e407b4c8SLawrence Tang notification_type, "guid", 153e407b4c8SLawrence Tang json_object_new_string(notification_type_string)); 1541b0b00e3SLawrence Tang 1551b0b00e3SLawrence Tang //Add the human readable notification type if possible. 1561b0b00e3SLawrence Tang char *notification_type_readable = "Unknown"; 157e407b4c8SLawrence Tang if (guid_equal(&header->NotificationType, 158f8fc7052SJohn Chung &gEfiEventNotificationTypeCmcGuid)) { 1591b0b00e3SLawrence Tang notification_type_readable = "CMC"; 160f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 161f8fc7052SJohn Chung &gEfiEventNotificationTypeCpeGuid)) { 1621b0b00e3SLawrence Tang notification_type_readable = "CPE"; 163f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 164f8fc7052SJohn Chung &gEfiEventNotificationTypeMceGuid)) { 1651b0b00e3SLawrence Tang notification_type_readable = "MCE"; 166f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 167f8fc7052SJohn Chung &gEfiEventNotificationTypePcieGuid)) { 1681b0b00e3SLawrence Tang notification_type_readable = "PCIe"; 169f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 170f8fc7052SJohn Chung &gEfiEventNotificationTypeInitGuid)) { 1711b0b00e3SLawrence Tang notification_type_readable = "INIT"; 172f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 173f8fc7052SJohn Chung &gEfiEventNotificationTypeNmiGuid)) { 1741b0b00e3SLawrence Tang notification_type_readable = "NMI"; 175f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 176f8fc7052SJohn Chung &gEfiEventNotificationTypeBootGuid)) { 1771b0b00e3SLawrence Tang notification_type_readable = "Boot"; 178f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 179f8fc7052SJohn Chung &gEfiEventNotificationTypeDmarGuid)) { 1801b0b00e3SLawrence Tang notification_type_readable = "DMAr"; 181f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 182f8fc7052SJohn Chung &gEfiEventNotificationTypeSeaGuid)) { 1831b0b00e3SLawrence Tang notification_type_readable = "SEA"; 184f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 185f8fc7052SJohn Chung &gEfiEventNotificationTypeSeiGuid)) { 1861b0b00e3SLawrence Tang notification_type_readable = "SEI"; 187f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 188f8fc7052SJohn Chung &gEfiEventNotificationTypePeiGuid)) { 1891b0b00e3SLawrence Tang notification_type_readable = "PEI"; 190f8fc7052SJohn Chung } else if (guid_equal(&header->NotificationType, 191f8fc7052SJohn Chung &gEfiEventNotificationTypeCxlGuid)) { 1921b0b00e3SLawrence Tang notification_type_readable = "CXL Component"; 193f8fc7052SJohn Chung } 194e407b4c8SLawrence Tang json_object_object_add( 195e407b4c8SLawrence Tang notification_type, "type", 196e407b4c8SLawrence Tang json_object_new_string(notification_type_readable)); 197e407b4c8SLawrence Tang json_object_object_add(header_ir, "notificationType", 198e407b4c8SLawrence Tang notification_type); 1991b0b00e3SLawrence Tang 2001b0b00e3SLawrence Tang //The record ID for this record, unique on a given system. 201e407b4c8SLawrence Tang json_object_object_add(header_ir, "recordID", 202e407b4c8SLawrence Tang json_object_new_uint64(header->RecordID)); 2031b0b00e3SLawrence Tang 2041b0b00e3SLawrence Tang //Flag for the record, and a human readable form. 205e407b4c8SLawrence Tang json_object *flags = integer_to_readable_pair( 206e407b4c8SLawrence Tang header->Flags, 2073c43f743SLawrence Tang sizeof(CPER_HEADER_FLAG_TYPES_KEYS) / sizeof(int), 208e407b4c8SLawrence Tang CPER_HEADER_FLAG_TYPES_KEYS, CPER_HEADER_FLAG_TYPES_VALUES, 2093c43f743SLawrence Tang "Unknown"); 2101b0b00e3SLawrence Tang json_object_object_add(header_ir, "flags", flags); 2111b0b00e3SLawrence Tang 2121b0b00e3SLawrence Tang //Persistence information. Outside the scope of specification, so just a uint32 here. 213e407b4c8SLawrence Tang json_object_object_add(header_ir, "persistenceInfo", 214e407b4c8SLawrence Tang json_object_new_uint64(header->PersistenceInfo)); 2151b0b00e3SLawrence Tang return header_ir; 2161b0b00e3SLawrence Tang } 2171b0b00e3SLawrence Tang 2181b0b00e3SLawrence Tang //Converts the given EFI section descriptor into JSON IR format. 219e407b4c8SLawrence Tang json_object * 220e407b4c8SLawrence Tang cper_section_descriptor_to_ir(EFI_ERROR_SECTION_DESCRIPTOR *section_descriptor) 2211b0b00e3SLawrence Tang { 2221b0b00e3SLawrence Tang json_object *section_descriptor_ir = json_object_new_object(); 2231b0b00e3SLawrence Tang 2241b0b00e3SLawrence Tang //The offset of the section from the base of the record header, length. 225e407b4c8SLawrence Tang json_object_object_add( 226e407b4c8SLawrence Tang section_descriptor_ir, "sectionOffset", 227e407b4c8SLawrence Tang json_object_new_uint64(section_descriptor->SectionOffset)); 228e407b4c8SLawrence Tang json_object_object_add( 229e407b4c8SLawrence Tang section_descriptor_ir, "sectionLength", 230e407b4c8SLawrence Tang json_object_new_uint64(section_descriptor->SectionLength)); 2311b0b00e3SLawrence Tang 2321b0b00e3SLawrence Tang //Revision. 233e407b4c8SLawrence Tang json_object_object_add(section_descriptor_ir, "revision", 234e407b4c8SLawrence Tang revision_to_ir(section_descriptor->Revision)); 2351b0b00e3SLawrence Tang 2361b0b00e3SLawrence Tang //Validation bits. 237e407b4c8SLawrence Tang json_object *validation_bits = 238e407b4c8SLawrence Tang bitfield_to_ir(section_descriptor->SecValidMask, 2, 239e407b4c8SLawrence Tang CPER_SECTION_DESCRIPTOR_VALID_BITFIELD_NAMES); 240e407b4c8SLawrence Tang json_object_object_add(section_descriptor_ir, "validationBits", 241e407b4c8SLawrence Tang validation_bits); 2421b0b00e3SLawrence Tang 2431b0b00e3SLawrence Tang //Flag bits. 244e407b4c8SLawrence Tang json_object *flags = 245e407b4c8SLawrence Tang bitfield_to_ir(section_descriptor->SectionFlags, 8, 246e407b4c8SLawrence Tang CPER_SECTION_DESCRIPTOR_FLAGS_BITFIELD_NAMES); 2471b0b00e3SLawrence Tang json_object_object_add(section_descriptor_ir, "flags", flags); 2481b0b00e3SLawrence Tang 2491b0b00e3SLawrence Tang //Section type (GUID). 2501b0b00e3SLawrence Tang json_object *section_type = json_object_new_object(); 2511b0b00e3SLawrence Tang char section_type_string[GUID_STRING_LENGTH]; 2521b0b00e3SLawrence Tang guid_to_string(section_type_string, §ion_descriptor->SectionType); 253e407b4c8SLawrence Tang json_object_object_add(section_type, "data", 254e407b4c8SLawrence Tang json_object_new_string(section_type_string)); 2551b0b00e3SLawrence Tang 2561b0b00e3SLawrence Tang //Readable section type, if possible. 257580423feSLawrence Tang const char *section_type_readable = "Unknown"; 258f8fc7052SJohn Chung for (size_t i = 0; i < section_definitions_len; i++) { 259f1f3b839SLawrence Tang if (guid_equal(section_definitions[i].Guid, 260f1f3b839SLawrence Tang §ion_descriptor->SectionType)) { 261f1f3b839SLawrence Tang section_type_readable = 262f1f3b839SLawrence Tang section_definitions[i].ReadableName; 263580423feSLawrence Tang break; 264580423feSLawrence Tang } 265580423feSLawrence Tang } 2661b0b00e3SLawrence Tang 267e407b4c8SLawrence Tang json_object_object_add(section_type, "type", 268e407b4c8SLawrence Tang json_object_new_string(section_type_readable)); 269e407b4c8SLawrence Tang json_object_object_add(section_descriptor_ir, "sectionType", 270e407b4c8SLawrence Tang section_type); 2711b0b00e3SLawrence Tang 2721b0b00e3SLawrence Tang //If validation bits indicate it exists, add FRU ID. 273f8fc7052SJohn Chung if (section_descriptor->SecValidMask & 0x1) { 2741b0b00e3SLawrence Tang char fru_id_string[GUID_STRING_LENGTH]; 2751b0b00e3SLawrence Tang guid_to_string(fru_id_string, §ion_descriptor->FruId); 276e407b4c8SLawrence Tang json_object_object_add(section_descriptor_ir, "fruID", 277e407b4c8SLawrence Tang json_object_new_string(fru_id_string)); 2781b0b00e3SLawrence Tang } 2791b0b00e3SLawrence Tang 2801b0b00e3SLawrence Tang //If validation bits indicate it exists, add FRU text. 281f8fc7052SJohn Chung if ((section_descriptor->SecValidMask & 0x2) >> 1) { 282e407b4c8SLawrence Tang json_object_object_add( 283e407b4c8SLawrence Tang section_descriptor_ir, "fruText", 284e407b4c8SLawrence Tang json_object_new_string(section_descriptor->FruString)); 285f8fc7052SJohn Chung } 2861b0b00e3SLawrence Tang 2871b0b00e3SLawrence Tang //Section severity. 2881b0b00e3SLawrence Tang json_object *section_severity = json_object_new_object(); 289e407b4c8SLawrence Tang json_object_object_add( 290e407b4c8SLawrence Tang section_severity, "code", 291e407b4c8SLawrence Tang json_object_new_uint64(section_descriptor->Severity)); 292e407b4c8SLawrence Tang json_object_object_add(section_severity, "name", 293e407b4c8SLawrence Tang json_object_new_string(severity_to_string( 294e407b4c8SLawrence Tang section_descriptor->Severity))); 295e407b4c8SLawrence Tang json_object_object_add(section_descriptor_ir, "severity", 296e407b4c8SLawrence Tang section_severity); 2971b0b00e3SLawrence Tang 2981b0b00e3SLawrence Tang return section_descriptor_ir; 2991b0b00e3SLawrence Tang } 3001b0b00e3SLawrence Tang 3011b0b00e3SLawrence Tang //Converts the section described by a single given section descriptor. 30294153499SLawrence Tang json_object *cper_section_to_ir(FILE *handle, long base_pos, 303e407b4c8SLawrence Tang EFI_ERROR_SECTION_DESCRIPTOR *descriptor) 3041b0b00e3SLawrence Tang { 305de9707f9SLawrence Tang //Save our current position in the stream. 306de9707f9SLawrence Tang long position = ftell(handle); 307de9707f9SLawrence Tang 3081b0b00e3SLawrence Tang //Read section as described by the section descriptor. 30994153499SLawrence Tang fseek(handle, base_pos + descriptor->SectionOffset, SEEK_SET); 310e18aaee9SLawrence Tang void *section = malloc(descriptor->SectionLength); 311e407b4c8SLawrence Tang if (fread(section, descriptor->SectionLength, 1, handle) != 1) { 312f8fc7052SJohn Chung printf("Section read failed: Could not read %u bytes from global offset %d.\n", 313e407b4c8SLawrence Tang descriptor->SectionLength, descriptor->SectionOffset); 314e18aaee9SLawrence Tang free(section); 315e18aaee9SLawrence Tang return NULL; 3161b0b00e3SLawrence Tang } 3171b0b00e3SLawrence Tang 318de9707f9SLawrence Tang //Seek back to our original position. 319de9707f9SLawrence Tang fseek(handle, position, SEEK_SET); 320de9707f9SLawrence Tang 321db1b7ce2SLawrence Tang //Parse section to IR based on GUID. 3221b0b00e3SLawrence Tang json_object *result = NULL; 323580423feSLawrence Tang int section_converted = 0; 324f8fc7052SJohn Chung for (size_t i = 0; i < section_definitions_len; i++) { 325f1f3b839SLawrence Tang if (guid_equal(section_definitions[i].Guid, 326f1f3b839SLawrence Tang &descriptor->SectionType) && 327f1f3b839SLawrence Tang section_definitions[i].ToIR != NULL) { 328f8fc7052SJohn Chung result = section_definitions[i].ToIR(section); 329580423feSLawrence Tang section_converted = 1; 330580423feSLawrence Tang break; 331580423feSLawrence Tang } 332580423feSLawrence Tang } 333580423feSLawrence Tang 334580423feSLawrence Tang //Was it an unknown GUID/failed read? 335580423feSLawrence Tang if (!section_converted) { 336d7e8ca34SLawrence Tang //Output the data as formatted base64. 337d7e8ca34SLawrence Tang result = json_object_new_object(); 338*a7d2cdddSEd Tanous 339*a7d2cdddSEd Tanous int32_t encoded_len = 0; 340*a7d2cdddSEd Tanous char *encoded = base64_encode( 341*a7d2cdddSEd Tanous section, descriptor->SectionLength, &encoded_len); 342*a7d2cdddSEd Tanous if (encoded == NULL) { 343f8fc7052SJohn Chung printf("Failed to allocate encode output buffer. \n"); 344f8fc7052SJohn Chung } else { 345e407b4c8SLawrence Tang json_object_object_add(result, "data", 346f8fc7052SJohn Chung json_object_new_string_len( 347f8fc7052SJohn Chung encoded, encoded_len)); 348d7e8ca34SLawrence Tang free(encoded); 349db1b7ce2SLawrence Tang } 350f8fc7052SJohn Chung } 3511b0b00e3SLawrence Tang //Free section memory, return result. 3521b0b00e3SLawrence Tang free(section); 3531b0b00e3SLawrence Tang return result; 3541b0b00e3SLawrence Tang } 355617949e4SLawrence Tang 356617949e4SLawrence Tang //Converts a single CPER section, without a header but with a section descriptor, to JSON. 357617949e4SLawrence Tang json_object *cper_single_section_to_ir(FILE *cper_section_file) 358617949e4SLawrence Tang { 359617949e4SLawrence Tang json_object *ir = json_object_new_object(); 360617949e4SLawrence Tang 36194153499SLawrence Tang //Read the current file pointer location as base record position. 36294153499SLawrence Tang long base_pos = ftell(cper_section_file); 36394153499SLawrence Tang 364617949e4SLawrence Tang //Read the section descriptor out. 365617949e4SLawrence Tang EFI_ERROR_SECTION_DESCRIPTOR section_descriptor; 366617949e4SLawrence Tang if (fread(§ion_descriptor, sizeof(EFI_ERROR_SECTION_DESCRIPTOR), 1, 367617949e4SLawrence Tang cper_section_file) != 1) { 368617949e4SLawrence Tang printf("Failed to read section descriptor for CPER single section (fread() returned an unexpected value).\n"); 369617949e4SLawrence Tang return NULL; 370617949e4SLawrence Tang } 371617949e4SLawrence Tang 372617949e4SLawrence Tang //Convert the section descriptor to IR. 373617949e4SLawrence Tang json_object *section_descriptor_ir = 374617949e4SLawrence Tang cper_section_descriptor_to_ir(§ion_descriptor); 375617949e4SLawrence Tang json_object_object_add(ir, "sectionDescriptor", section_descriptor_ir); 376617949e4SLawrence Tang 377617949e4SLawrence Tang //Parse the single section. 378f8fc7052SJohn Chung json_object *section_ir = cper_section_to_ir( 379f8fc7052SJohn Chung cper_section_file, base_pos, §ion_descriptor); 380617949e4SLawrence Tang json_object_object_add(ir, "section", section_ir); 381617949e4SLawrence Tang 382617949e4SLawrence Tang return ir; 383617949e4SLawrence Tang } 384