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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#include "cvmfs_config.h" |
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#include "cmd_hash.h" |
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#ifndef __STDC_FORMAT_MACROS |
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#define __STDC_FORMAT_MACROS |
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#endif |
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#include <inttypes.h> |
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#include <stdint.h> |
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#include <cstdio> |
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#include <cstring> |
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#include "crypto/hash.h" |
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#include "publish/except.h" |
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#include "util/logging.h" |
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int publish::CmdHash::Main(const Options &options) { |
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std::string algorithm = options.GetString("algorithm"); |
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shash::Any hash(shash::ParseHashAlgorithm(algorithm)); |
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// MD5 is not a content hash algorithm but we deal with it in this utility |
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// nevertheless |
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if (algorithm == "md5") |
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hash.algorithm = shash::kMd5; |
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if (hash.algorithm == shash::kAny) |
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throw EPublish("unknown hash algorithm: " + algorithm); |
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if (options.Has("input")) { |
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shash::HashString(options.GetString("input"), &hash); |
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} else { |
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shash::HashFd(fileno(stdin), &hash); |
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} |
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LogCvmfs(kLogCvmfs, kLogStdout | kLogNoLinebreak, "%s", |
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options.Has("fingerprint") ? hash.ToFingerprint().c_str() |
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: hash.ToString().c_str()); |
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if (options.Has("split")) { |
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if (hash.algorithm != shash::kMd5) |
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throw EPublish("split int representation only supported for MD5"); |
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uint64_t high, low; |
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shash::Md5 md5_hash; |
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memcpy(md5_hash.digest, hash.digest, shash::kDigestSizes[shash::kMd5]); |
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md5_hash.ToIntPair(&high, &low); |
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// SQLite uses int64, not uint64 |
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LogCvmfs(kLogCvmfs, kLogStdout | kLogNoLinebreak, |
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" [%" PRId64 " %" PRId64 "]", |
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static_cast<int64_t>(high), static_cast<int64_t>(low)); |
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} |
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LogCvmfs(kLogCvmfs, kLogStdout, ""); |
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return 0; |
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} |
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