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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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* This command reads the content of a .cvmfspublished file and exposes it |
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* to the user. |
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*/ |
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#include "swissknife_info.h" |
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#include <string> |
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#include "crypto/hash.h" |
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#include "manifest.h" |
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#include "network/download.h" |
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#include "network/sink_mem.h" |
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#include "util/logging.h" |
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#include "util/posix.h" |
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#include "util/string.h" |
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using namespace std; // NOLINT |
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namespace swissknife { |
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/** |
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* Checks if the given path looks like a remote path |
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*/ |
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static bool IsRemote(const string &repository) { |
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return HasPrefix(repository, "http://", false) |
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|| HasPrefix(repository, "https://", false); |
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} |
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/** |
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* Checks for existence of a file either locally or via HTTP head |
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*/ |
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bool CommandInfo::Exists(const string &repository, const string &file) const { |
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if (IsRemote(repository)) { |
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const string url = repository + "/" + file; |
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download::JobInfo head(&url, false); |
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return download_manager()->Fetch(&head) == download::kFailOk; |
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} else { |
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return FileExists(file); |
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} |
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} |
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ParameterList CommandInfo::GetParams() const { |
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swissknife::ParameterList r; |
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r.push_back(Parameter::Mandatory('r', "repository directory / url")); |
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r.push_back(Parameter::Optional('u', "repository mount point")); |
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r.push_back(Parameter::Optional('l', "log level (0-4, default: 2)")); |
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r.push_back(Parameter::Optional('@', "proxy url")); |
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r.push_back(Parameter::Switch('c', "show root catalog hash")); |
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r.push_back(Parameter::Switch('C', "show mounted root catalog hash")); |
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r.push_back(Parameter::Switch('n', "show fully qualified repository name")); |
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r.push_back(Parameter::Switch('t', "show time stamp")); |
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r.push_back(Parameter::Switch('m', |
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"check if repository is marked as " |
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"replication master copy")); |
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r.push_back(Parameter::Switch('v', "repository revision number")); |
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r.push_back(Parameter::Switch('g', |
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"check if repository is garbage " |
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"collectable")); |
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r.push_back(Parameter::Switch('o', |
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"check if the repository maintains a " |
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"reference log file")); |
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r.push_back(Parameter::Switch('h', "print results in human readable form")); |
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r.push_back(Parameter::Switch('L', "follow HTTP redirects")); |
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r.push_back(Parameter::Switch('X', |
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"show whether external data is supported " |
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"in the root catalog.")); |
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r.push_back(Parameter::Switch('M', "print repository meta info.")); |
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r.push_back(Parameter::Switch('R', "print raw manifest.")); |
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r.push_back(Parameter::Switch('e', "check if the repository is empty")); |
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return r; |
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} |
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int swissknife::CommandInfo::Main(const swissknife::ArgumentList &args) { |
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if (args.find('l') != args.end()) { |
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const unsigned log_level = kLogLevel0 |
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<< String2Uint64(*args.find('l')->second); |
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if (log_level > kLogNone) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "invalid log level"); |
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return 1; |
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} |
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SetLogVerbosity(static_cast<LogLevels>(log_level)); |
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} |
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const string mount_point = (args.find('u') != args.end()) |
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? *args.find('u')->second |
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: ""; |
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const string repository = MakeCanonicalPath(*args.find('r')->second); |
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// sanity check |
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if (args.count('C') > 0 && mount_point.empty()) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "need a CernVM-FS mountpoint (-u) for -C"); |
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return 1; |
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} |
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if (IsRemote(repository)) { |
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const bool follow_redirects = args.count('L') > 0; |
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const string proxy = (args.find('@') != args.end()) |
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? *args.find('@')->second |
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: ""; |
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if (!this->InitDownloadManager(follow_redirects, proxy)) { |
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return 1; |
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} |
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} |
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// Check if we should be human readable |
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const bool human_readable = (args.count('h') > 0); |
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if (args.count('e') > 0) { |
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const string manifest_path = IsRemote(repository) |
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? ".cvmfspublished" |
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: repository + "/.cvmfspublished"; |
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const bool is_empty = !Exists(repository, manifest_path); |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
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(human_readable) ? "Empty Repository: " : "", |
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StringifyBool(is_empty).c_str()); |
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if (is_empty) |
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return 0; |
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} |
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// Load manifest file |
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// Repository can be HTTP address or on local file system |
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// TODO(jblomer): do this using Manifest::Fetch |
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// currently this is not possible, since Manifest::Fetch asks for the |
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// repository name... Which we want to figure out with the tool at hand. |
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// Possible Fix: Allow for a Manifest::Fetch with an empty name. |
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UniquePtr<manifest::Manifest> manifest; |
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if (IsRemote(repository)) { |
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const string url = repository + "/.cvmfspublished"; |
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cvmfs::MemSink manifest_memsink; |
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download::JobInfo download_manifest(&url, false, false, NULL, |
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&manifest_memsink); |
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const download::Failures retval = download_manager()->Fetch( |
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&download_manifest); |
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if (retval != download::kFailOk) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "failed to download manifest (%d - %s)", |
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retval, download::Code2Ascii(retval)); |
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return 1; |
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} |
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manifest = manifest::Manifest::LoadMem(manifest_memsink.data(), |
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manifest_memsink.pos()); |
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} else { |
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if (chdir(repository.c_str()) != 0) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "failed to switch to directory %s", |
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repository.c_str()); |
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return 1; |
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} |
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manifest = manifest::Manifest::LoadFile(".cvmfspublished"); |
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} |
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if (!manifest.IsValid()) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "failed to load repository manifest"); |
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return 1; |
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} |
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// Validate Manifest |
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const string certificate_path = "data/" + manifest->certificate().MakePath(); |
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if (!Exists(repository, certificate_path)) { |
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LogCvmfs(kLogCvmfs, kLogStderr, "failed to find certificate (%s)", |
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certificate_path.c_str()); |
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return 1; |
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} |
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// Get information from the mount point |
| 167 |
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if (args.count('C') > 0) { |
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assert(!mount_point.empty()); |
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const std::string root_hash_xattr = "user.root_hash"; |
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std::string root_hash; |
| 171 |
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const bool success = platform_getxattr(mount_point, root_hash_xattr, |
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&root_hash); |
| 173 |
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if (!success) { |
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LogCvmfs(kLogCvmfs, kLogStderr, |
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"failed to retrieve extended attribute " |
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" '%s' from '%s' (errno: %d)", |
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root_hash_xattr.c_str(), mount_point.c_str(), errno); |
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return 1; |
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} |
| 180 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
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(human_readable) ? "Mounted Root Hash: " : "", |
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root_hash.c_str()); |
| 183 |
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} |
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| 185 |
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// Get information about external data |
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if (args.count('X') > 0) { |
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assert(!mount_point.empty()); |
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const std::string external_data_xattr = "user.external_data"; |
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std::string external_data; |
| 190 |
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const bool success = platform_getxattr(mount_point, external_data_xattr, |
| 191 |
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&external_data); |
| 192 |
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if (!success) { |
| 193 |
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LogCvmfs(kLogCvmfs, kLogStderr, |
| 194 |
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"failed to retrieve extended attribute " |
| 195 |
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" '%s' from '%s' (errno: %d)", |
| 196 |
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external_data_xattr.c_str(), mount_point.c_str(), errno); |
| 197 |
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return 1; |
| 198 |
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} |
| 199 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
| 200 |
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(human_readable) ? "External data enabled: " : "", |
| 201 |
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external_data.c_str()); |
| 202 |
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} |
| 203 |
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| 204 |
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// Get information from the Manifest |
| 205 |
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✗ |
if (args.count('c') > 0) { |
| 206 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
| 207 |
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(human_readable) ? "Root Catalog Hash: " : "", |
| 208 |
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manifest->catalog_hash().ToString().c_str()); |
| 209 |
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} |
| 210 |
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| 211 |
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if (args.count('n') > 0) { |
| 212 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
| 213 |
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(human_readable) ? "Fully Qualified Repository Name: " : "", |
| 214 |
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manifest->repository_name().c_str()); |
| 215 |
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} |
| 216 |
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| 217 |
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if (args.count('t') > 0) { |
| 218 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%lu", |
| 219 |
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(human_readable) ? "Time Stamp: " : "", |
| 220 |
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manifest->publish_timestamp()); |
| 221 |
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} |
| 222 |
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| 223 |
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if (args.count('m') > 0) { |
| 224 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
| 225 |
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(human_readable) ? "Replication Master Copy: " : "", |
| 226 |
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(Exists(repository, ".cvmfs_master_replica")) ? "true" : "false"); |
| 227 |
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} |
| 228 |
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| 229 |
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if (args.count('v') > 0) { |
| 230 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
| 231 |
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(human_readable) ? "Revision: " : "", |
| 232 |
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(StringifyInt(manifest->revision())).c_str()); |
| 233 |
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} |
| 234 |
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| 235 |
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✗ |
if (args.count('g') > 0) { |
| 236 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
| 237 |
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(human_readable) ? "Garbage Collectable: " : "", |
| 238 |
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(StringifyBool(manifest->garbage_collectable())).c_str()); |
| 239 |
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} |
| 240 |
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| 241 |
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✗ |
if (args.count('o') > 0) { |
| 242 |
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LogCvmfs(kLogCvmfs, kLogStdout, "%s%s", |
| 243 |
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(human_readable) ? "Maintains Reference Log: " : "", |
| 244 |
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(Exists(repository, ".cvmfsreflog")) ? "true" : "false"); |
| 245 |
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} |
| 246 |
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| 247 |
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✗ |
if (args.count('M') > 0) { |
| 248 |
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const shash::Any meta_info(manifest->meta_info()); |
| 249 |
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✗ |
if (meta_info.IsNull()) { |
| 250 |
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if (human_readable) |
| 251 |
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LogCvmfs(kLogCvmfs, kLogStderr, "no meta info available"); |
| 252 |
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return 0; |
| 253 |
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} |
| 254 |
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✗ |
const string url = repository + "/data/" + meta_info.MakePath(); |
| 255 |
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✗ |
cvmfs::MemSink metainfo_memsink; |
| 256 |
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download::JobInfo download_metainfo(&url, true, false, &meta_info, |
| 257 |
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✗ |
&metainfo_memsink); |
| 258 |
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const download::Failures retval = download_manager()->Fetch( |
| 259 |
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&download_metainfo); |
| 260 |
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✗ |
if (retval != download::kFailOk) { |
| 261 |
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if (human_readable) |
| 262 |
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LogCvmfs(kLogCvmfs, kLogStderr, |
| 263 |
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"failed to download meta info (%d - %s)", retval, |
| 264 |
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download::Code2Ascii(retval)); |
| 265 |
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✗ |
return 1; |
| 266 |
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} |
| 267 |
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✗ |
const string info(reinterpret_cast<char *>(metainfo_memsink.data()), |
| 268 |
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✗ |
metainfo_memsink.pos()); |
| 269 |
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✗ |
LogCvmfs(kLogCvmfs, kLogStdout | kLogNoLinebreak, "%s", info.c_str()); |
| 270 |
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} |
| 271 |
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| 272 |
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✗ |
if (args.count('R') > 0) { |
| 273 |
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✗ |
LogCvmfs(kLogCvmfs, kLogStdout | kLogNoLinebreak, "%s", |
| 274 |
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manifest->ExportString().c_str()); |
| 275 |
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} |
| 276 |
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| 277 |
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✗ |
return 0; |
| 278 |
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} |
| 279 |
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| 280 |
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//------------------------------------------------------------------------------ |
| 281 |
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| 282 |
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✗ |
int CommandVersion::Main(const ArgumentList &args) { |
| 283 |
|
✗ |
LogCvmfs(kLogCvmfs, kLogStdout, "%s", CVMFS_VERSION); |
| 284 |
|
✗ |
return 0; |
| 285 |
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} |
| 286 |
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| 287 |
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} // namespace swissknife |
| 288 |
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