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|---|---|---|---|
| 1 | // ====================================================================== | ||
| 2 | // \title File.cpp | ||
| 3 | // \author bocchino | ||
| 4 | // \brief cpp file for FileDownlink::File | ||
| 5 | // | ||
| 6 | // \copyright | ||
| 7 | // Copyright 2009-2015, by the California Institute of Technology. | ||
| 8 | // ALL RIGHTS RESERVED. United States Government Sponsorship | ||
| 9 | // acknowledged. | ||
| 10 | // | ||
| 11 | // ====================================================================== | ||
| 12 | |||
| 13 | #include <Fw/FPrimeBasicTypes.hpp> | ||
| 14 | #include <Fw/Types/Assert.hpp> | ||
| 15 | #include <Svc/FileDownlink/FileDownlink.hpp> | ||
| 16 | |||
| 17 | namespace Svc { | ||
| 18 | |||
| 19 | 8 | Os::File::Status FileDownlink::File ::open(const Fw::FileNameString& sourceFileName, | |
| 20 | const Fw::FileNameString& destFileName) { | ||
| 21 | // Set source name | ||
| 22 |
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8 | Fw::LogStringArg sourceLogStringArg(sourceFileName); |
| 23 |
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8 | this->m_sourceName = sourceLogStringArg; |
| 24 | |||
| 25 | // Set dest name | ||
| 26 |
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8 | Fw::LogStringArg destLogStringArg(destFileName); |
| 27 |
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8 | this->m_destName = destLogStringArg; |
| 28 | |||
| 29 | // Initialize checksum | ||
| 30 |
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8 | CFDP::Checksum checksum; |
| 31 |
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8 | this->m_checksum = checksum; |
| 32 | |||
| 33 | // Open osFile for reading (sandbox path validation happens here) | ||
| 34 |
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8 | Os::File::Status status = this->m_osFile.open(sourceFileName.toChar(), Os::File::OPEN_READ); |
| 35 |
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8 | if (status != Os::File::OP_OK) { |
| 36 | 2 | return status; | |
| 37 | } | ||
| 38 | |||
| 39 | // Query size only after the path passes sandbox checks | ||
| 40 | 6 | FwSizeType file_size; | |
| 41 |
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6 | status = this->m_osFile.size(file_size); |
| 42 |
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6 | if (status != Os::File::OP_OK) { |
| 43 | ✗ | this->m_osFile.close(); | |
| 44 | ✗ | return Os::File::BAD_SIZE; | |
| 45 | } | ||
| 46 | // If the size does not cast cleanly to the desired U32 type, return size error | ||
| 47 |
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6 | if (static_cast<FwSizeType>(static_cast<U32>(file_size)) != file_size) { |
| 48 | ✗ | this->m_osFile.close(); | |
| 49 | ✗ | return Os::File::BAD_SIZE; | |
| 50 | } | ||
| 51 | 6 | this->m_size = static_cast<U32>(file_size); | |
| 52 | 6 | return Os::File::OP_OK; | |
| 53 | 8 | } | |
| 54 | |||
| 55 | 4 | Os::File::Status FileDownlink::File ::read(U8* const data, const U32 byteOffset, const U32 size) { | |
| 56 | Os::File::Status status; | ||
| 57 |
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4 | status = this->m_osFile.seek(byteOffset, Os::File::SeekType::ABSOLUTE); |
| 58 |
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4 | if (status != Os::File::OP_OK) { |
| 59 | ✗ | return status; | |
| 60 | } | ||
| 61 | |||
| 62 | 4 | FwSizeType intSize = size; | |
| 63 |
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4 | status = this->m_osFile.read(data, intSize); |
| 64 | |||
| 65 |
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4 | if (status != Os::File::OP_OK) { |
| 66 | ✗ | return status; | |
| 67 | } | ||
| 68 | // Force a bad size error when the U32 carrying size is bad | ||
| 69 |
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4 | if (static_cast<U32>(intSize) != size) { |
| 70 | ✗ | return Os::File::BAD_SIZE; | |
| 71 | } | ||
| 72 |
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4 | this->m_checksum.update(data, byteOffset, size); |
| 73 | |||
| 74 | 4 | return Os::File::OP_OK; | |
| 75 | } | ||
| 76 | } // namespace Svc | ||
| 77 |