-
Notifications
You must be signed in to change notification settings - Fork 42
/
file_operations.cpp
171 lines (153 loc) · 6.42 KB
/
file_operations.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
#include <cmath>
#include <fstream>
#include "file_operations.h"
#include "dfu_utility.h"
#include "metawear/core/cpp/metawearboard_def.h"
#include "miniz.h"
#include "json.hpp"
FileOperationsDelegate::~FileOperationsDelegate() {
}
FileOperations::FileOperations(FileOperationsDelegate &fileDelegate, const MblMwMetaWearBoard* board) : binFile(0), fileDelegate(fileDelegate), bootloaderBoard(board), metaDataFile(0) {
}
FileOperations::~FileOperations() {
if (binFile) {
mz_free(binFile);
}
if (metaDataFile) {
mz_free(metaDataFile);
}
}
void FileOperations::openFile(const char* filename)
{
std::ifstream file;
file.exceptions(std::ifstream::badbit | std::ifstream::failbit | std::ifstream::eofbit);
//Need to use binary mode; otherwise CRLF line endings count as 2 for
//`length` calculation but only 1 for `file.read` (on some platforms),
//and we get undefined behaviour when trying to read `length` characters.
file.open(filename, std::ifstream::in | std::ifstream::binary);
file.seekg(0, std::ios::end);
std::streampos length(file.tellg());
if (length) {
file.seekg(0, std::ios::beg);
binFileSize = static_cast<std::size_t>(length);
binFile = static_cast<uint8_t *>(malloc(binFileSize));
// Load all the data to our local vector
file.read((char *)binFile, binFileSize);
// Compute how we need to slice up the file into BLE sized chunks
numberOfPackets = std::ceil((double)binFileSize / (double)MBL_PACKET_SIZE);
bytesInLastPacket = binFileSize % MBL_PACKET_SIZE;
if (bytesInLastPacket == 0) {
bytesInLastPacket = MBL_PACKET_SIZE;
}
writingPacketNumber = 0;
prevPercentage = -1;
// Let the delegate know we opened it!
fileDelegate.onFileOpened(binFileSize);
} else {
fileDelegate.onError("0 length file");
}
}
void FileOperations::writeNextPacket()
{
int percentage = 0;
for (int index = 0; index < MBL_PACKETS_NOTIFICATION_INTERVAL; index++) {
if (writingPacketNumber > numberOfPackets - 2) {
//NSLog(@"writing last packet");
uint8_t *nextPacketData = &binFile[writingPacketNumber * MBL_PACKET_SIZE];
//NSLog(@"writing packet number %d ...",self.writingPacketNumber+1);
//NSLog(@"packet data: %@",nextPacketData);
bootloaderBoard->write_gatt_char(&DFU_PACKET_CHAR, MBL_MW_GATT_CHAR_WRITE_WITHOUT_RESPONSE, nextPacketData, bytesInLastPacket);
writingPacketNumber++;
fileDelegate.onTransferPercentage(100);
fileDelegate.onAllPacketsTranferred();
break;
}
uint8_t *nextPacketData = &binFile[writingPacketNumber * MBL_PACKET_SIZE];
//NSLog(@"writing packet number %d ...",self.writingPacketNumber+1);
//NSLog(@"packet data: %@",nextPacketData);
bootloaderBoard->write_gatt_char(&DFU_PACKET_CHAR, MBL_MW_GATT_CHAR_WRITE_WITHOUT_RESPONSE, nextPacketData, MBL_PACKET_SIZE);
percentage = (((double)(writingPacketNumber * 20) / (double)(binFileSize)) * 100);
if (percentage != prevPercentage) {
fileDelegate.onTransferPercentage(percentage);
prevPercentage = percentage;
}
writingPacketNumber++;
}
}
void FileOperations::openZip(const char *filename)
{
int i;
mz_bool status;
size_t uncomp_size;
mz_zip_archive zip_archive = { 0 };
void *p;
std::string metadataFilename, firmwareFilename;
status = mz_zip_reader_init_file(&zip_archive, filename, MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY);
if (!status) {
fileDelegate.onError("mz_zip_reader_init_file() failed!");
return;
}
for (i = 0; i < (int)mz_zip_reader_get_num_files(&zip_archive); i++) {
mz_zip_archive_file_stat file_stat;
if (!mz_zip_reader_file_stat(&zip_archive, i, &file_stat)) {
fileDelegate.onError("mz_zip_reader_file_stat() failed!");
mz_zip_reader_end(&zip_archive);
return;
}
if (std::string(file_stat.m_filename) == "manifest.json") {
// Try to extract the manifest to the heap
p = mz_zip_reader_extract_file_to_heap(&zip_archive, file_stat.m_filename, &uncomp_size, 0);
if (!p) {
fileDelegate.onError("mz_zip_reader_extract_file_to_heap() failed!");
mz_zip_reader_end(&zip_archive);
return;
}
// Pull out the firmware and data filenames
auto manifest = nlohmann::json::parse(std::string((const char *)p, uncomp_size));
auto it = manifest.find("manifest");
if (it != manifest.end()) {
auto it1 = it->find("application");
if (it1 != it->end()) {
auto it2 = it1->find("bin_file");
if (it2 != it1->end()) {
firmwareFilename = *it2;
}
auto it3 = it1->find("dat_file");
if (it3 != it1->end()) {
metadataFilename = *it3;
}
}
}
// We're done.
mz_free(p);
}
}
if (metadataFilename.empty() || firmwareFilename.empty()) {
fileDelegate.onError("error parsing manifest");
return;
}
// Open the Metadata file
metaDataFile = static_cast<uint8_t *>(mz_zip_reader_extract_file_to_heap(&zip_archive, metadataFilename.c_str(), &metaDataFileSize, 0));
if (!metaDataFile) {
fileDelegate.onError("mz_zip_reader_extract_file_to_heap() failed!");
mz_zip_reader_end(&zip_archive);
return;
}
// Process the firmware file
binFile = static_cast<uint8_t *>(mz_zip_reader_extract_file_to_heap(&zip_archive, firmwareFilename.c_str(), &binFileSize, 0));
if (!binFile) {
fileDelegate.onError("mz_zip_reader_extract_file_to_heap() failed!");
mz_zip_reader_end(&zip_archive);
return;
}
// Compute how we need to slice up the file into BLE sized chunks
numberOfPackets = std::ceil((double)binFileSize / (double)MBL_PACKET_SIZE);
bytesInLastPacket = binFileSize % MBL_PACKET_SIZE;
if (bytesInLastPacket == 0) {
bytesInLastPacket = MBL_PACKET_SIZE;
}
writingPacketNumber = 0;
// Let the delegate know we opened it!
fileDelegate.onFileOpened(binFileSize);
mz_zip_reader_end(&zip_archive);
}