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replace sprintf with its safe version snprintf (#5475)

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Summary:
sprintf is unsafe and has buffer overrun risk. Replace it with the safer version snprintf where buffer size is supplied to avoid overrun.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5475

Differential Revision: D15879481

Pulled By: sagar0

fbshipit-source-id: 7ae1958ffc9727fa50261dfbb98ddd74e70a72d8
main
Huisheng Liu 6 years ago committed by Facebook Github Bot
parent d0c6aea192
commit 92f631da33
1 changed files with 18 additions and 18 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 36
      tools/trace_analyzer_tool.cc

36
tools/trace_analyzer_tool.cc
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@ -572,7 +572,7 @@ Status TraceAnalyzer::MakeStatistics() {
// output the access count distribution
if (FLAGS_output_access_count_stats && stat.second.a_count_dist_f) {
for (auto& record : stat.second.a_count_stats) {
ret = sprintf(buffer_, "access_count: %" PRIu64 " num: %" PRIu64 "\n",
ret = snprintf(buffer_, sizeof(buffer_), "access_count: %" PRIu64 " num: %" PRIu64 "\n",
record.first, record.second);
if (ret < 0) {
return Status::IOError("Format the output failed");
@ -596,7 +596,7 @@ Status TraceAnalyzer::MakeStatistics() {
get_mid = true;
}
if (FLAGS_output_key_distribution && stat.second.a_key_size_f) {
ret = sprintf(buffer_, "%" PRIu64 " %" PRIu64 "\n", record.first,
ret = snprintf(buffer_, sizeof(buffer_), "%" PRIu64 " %" PRIu64 "\n", record.first,
record.second);
if (ret < 0) {
return Status::IOError("Format output failed");
@ -624,7 +624,7 @@ Status TraceAnalyzer::MakeStatistics() {
if (FLAGS_output_value_distribution && stat.second.a_value_size_f &&
(type == TraceOperationType::kPut ||
type == TraceOperationType::kMerge)) {
ret = sprintf(buffer_,
ret = snprintf(buffer_, sizeof(buffer_),
"Number_of_value_size_between %" PRIu64 " and %" PRIu64
" is: %" PRIu64 "\n",
v_begin, v_end, record.second);
@ -675,7 +675,7 @@ Status TraceAnalyzer::MakeStatisticKeyStatsOrPrefix(TraceStats& stats) {
succ_ratio = (static_cast<double>(record.second.succ_count)) /
record.second.access_count;
}
ret = sprintf(buffer_, "%u %zu %" PRIu64 " %" PRIu64 " %f\n",
ret = snprintf(buffer_, sizeof(buffer_), "%u %zu %" PRIu64 " %" PRIu64 " %f\n",
record.second.cf_id, record.second.value_size,
record.second.key_id, record.second.access_count, succ_ratio);
if (ret < 0) {
@ -703,7 +703,7 @@ Status TraceAnalyzer::MakeStatisticKeyStatsOrPrefix(TraceStats& stats) {
prefix_succ_ratio =
(static_cast<double>(prefix_succ_access)) / prefix_access;
}
ret = sprintf(buffer_, "%" PRIu64 " %" PRIu64 " %" PRIu64 " %f %f %s\n",
ret = snprintf(buffer_, sizeof(buffer_), "%" PRIu64 " %" PRIu64 " %" PRIu64 " %f %f %s\n",
record.second.key_id, prefix_access, prefix_count,
prefix_ave_access, prefix_succ_ratio, prefix_out.c_str());
if (ret < 0) {
@ -809,7 +809,7 @@ Status TraceAnalyzer::MakeStatisticQPS() {
}
if (stat.second.a_qps_f) {
while (time_line < time_it.first) {
ret = sprintf(buffer_, "%u\n", 0);
ret = snprintf(buffer_, sizeof(buffer_), "%u\n", 0);
if (ret < 0) {
return Status::IOError("Format the output failed");
}
@ -821,7 +821,7 @@ Status TraceAnalyzer::MakeStatisticQPS() {
}
time_line++;
}
ret = sprintf(buffer_, "%u\n", time_it.second);
ret = snprintf(buffer_, sizeof(buffer_), "%u\n", time_it.second);
if (ret < 0) {
return Status::IOError("Format the output failed");
}
@ -870,7 +870,7 @@ Status TraceAnalyzer::MakeStatisticQPS() {
cur_ratio = (static_cast<double>(find_time->second)) / cur_uni_key;
cur_num = find_time->second;
}
ret = sprintf(buffer_, "%" PRIu64 " %.12f\n", cur_num, cur_ratio);
ret = snprintf(buffer_, sizeof(buffer_), "%" PRIu64 " %.12f\n", cur_num, cur_ratio);
if (ret < 0) {
return Status::IOError("Format the output failed");
}
@ -887,7 +887,7 @@ Status TraceAnalyzer::MakeStatisticQPS() {
// output the prefix of top k access peak
if (FLAGS_output_prefix_cut > 0 && stat.second.a_top_qps_prefix_f) {
while (!stat.second.top_k_qps_sec.empty()) {
ret = sprintf(buffer_, "At time: %u with QPS: %u\n",
ret = snprintf(buffer_, sizeof(buffer_), "At time: %u with QPS: %u\n",
stat.second.top_k_qps_sec.top().second,
stat.second.top_k_qps_sec.top().first);
if (ret < 0) {
@ -906,7 +906,7 @@ Status TraceAnalyzer::MakeStatisticQPS() {
for (auto& qps_prefix : stat.second.a_qps_prefix_stats[qps_time]) {
std::string qps_prefix_out =
rocksdb::LDBCommand::StringToHex(qps_prefix.first);
ret = sprintf(buffer_, "The prefix: %s Access count: %u\n",
ret = snprintf(buffer_, sizeof(buffer_), "The prefix: %s Access count: %u\n",
qps_prefix_out.c_str(), qps_prefix.second);
if (ret < 0) {
return Status::IOError("Format the output failed");
@ -928,9 +928,9 @@ Status TraceAnalyzer::MakeStatisticQPS() {
for (uint32_t i = 0; i < duration; i++) {
for (int type = 0; type <= kTaTypeNum; type++) {
if (type < kTaTypeNum) {
ret = sprintf(buffer_, "%u ", type_qps[i][type]);
ret = snprintf(buffer_, sizeof(buffer_), "%u ", type_qps[i][type]);
} else {
ret = sprintf(buffer_, "%u\n", type_qps[i][type]);
ret = snprintf(buffer_, sizeof(buffer_), "%u\n", type_qps[i][type]);
}
if (ret < 0) {
return Status::IOError("Format the output failed");
@ -959,9 +959,9 @@ Status TraceAnalyzer::MakeStatisticQPS() {
v = 0;
}
if (cf < cfs_size - 1) {
ret = sprintf(buffer_, "%u ", v);
ret = snprintf(buffer_, sizeof(buffer_), "%u ", v);
} else {
ret = sprintf(buffer_, "%u\n", v);
ret = snprintf(buffer_, sizeof(buffer_), "%u\n", v);
}
if (ret < 0) {
return Status::IOError("Format the output failed");
@ -1016,7 +1016,7 @@ Status TraceAnalyzer::ReProcessing() {
if (found != stat.a_key_stats.end()) {
key_id = found->second.key_id;
}
ret = sprintf(buffer_, "%u %" PRIu64 " %" PRIu64 "\n",
ret = snprintf(buffer_, sizeof(buffer_), "%u %" PRIu64 " %" PRIu64 "\n",
stat.time_series.front().type,
stat.time_series.front().ts, key_id);
if (ret < 0) {
@ -1064,7 +1064,7 @@ Status TraceAnalyzer::ReProcessing() {
TraceStats& stat = ta_[type].stats[cf_id];
if (stat.w_key_f) {
if (stat.a_key_stats.find(input_key) != stat.a_key_stats.end()) {
ret = sprintf(buffer_, "%" PRIu64 " %" PRIu64 "\n",
ret = snprintf(buffer_, sizeof(buffer_), "%" PRIu64 " %" PRIu64 "\n",
cfs_[cf_id].w_count,
stat.a_key_stats[input_key].access_count);
if (ret < 0) {
@ -1086,7 +1086,7 @@ Status TraceAnalyzer::ReProcessing() {
prefix[type] = input_key.substr(0, FLAGS_output_prefix_cut);
std::string prefix_out =
rocksdb::LDBCommand::StringToHex(prefix[type]);
ret = sprintf(buffer_, "%" PRIu64 " %s\n", cfs_[cf_id].w_count,
ret = snprintf(buffer_, sizeof(buffer_), "%" PRIu64 " %s\n", cfs_[cf_id].w_count,
prefix_out.c_str());
if (ret < 0) {
return Status::IOError("Format the output failed");
@ -1904,7 +1904,7 @@ Status TraceAnalyzer::WriteTraceSequence(const uint32_t& type,
std::string hex_key = rocksdb::LDBCommand::StringToHex(key);
int ret;
ret =
sprintf(buffer_, "%u %u %zu %" PRIu64 "\n", type, cf_id, value_size, ts);
snprintf(buffer_, sizeof(buffer_), "%u %u %zu %" PRIu64 "\n", type, cf_id, value_size, ts);
if (ret < 0) {
return Status::IOError("failed to format the output");
}

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