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@ -31,6 +31,7 @@
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#include <cstdio>
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#include "include_base_utils.h"
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#include "file_io_utils.h"
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using namespace epee;
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#include "util.h"
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@ -46,7 +47,7 @@ using namespace epee;
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#endif
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#include <boost/filesystem.hpp>
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#include <boost/asio.hpp>
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#include <openssl/sha.h>
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namespace tools
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{
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@ -585,4 +586,36 @@ std::string get_nix_version_display_string()
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}
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return 0;
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}
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bool sha256sum(const std::string &filename, crypto::hash &hash)
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{
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if (!epee::file_io_utils::is_file_exist(filename))
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return false;
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std::ifstream f;
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f.exceptions(std::ifstream::failbit | std::ifstream::badbit);
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f.open(filename, std::ios_base::binary | std::ios_base::in | std::ios::ate);
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if (!f)
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return false;
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std::ifstream::pos_type file_size = f.tellg();
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SHA256_CTX ctx;
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if (!SHA256_Init(&ctx))
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return false;
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size_t size_left = file_size;
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f.seekg(0, std::ios::beg);
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while (size_left)
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{
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char buf[4096];
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std::ifstream::pos_type read_size = size_left > sizeof(buf) ? sizeof(buf) : size_left;
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f.read(buf, read_size);
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if (!f || !f.good())
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return false;
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if (!SHA256_Update(&ctx, buf, read_size))
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return false;
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size_left -= read_size;
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}
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f.close();
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if (!SHA256_Final((unsigned char*)hash.data, &ctx))
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return false;
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return true;
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}
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}
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