LLVM  3.7.0
FuzzerIO.cpp
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1 //===- FuzzerIO.cpp - IO utils. -------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 // IO functions.
10 //===----------------------------------------------------------------------===//
11 #include "FuzzerInternal.h"
12 #include <iterator>
13 #include <fstream>
14 #include <dirent.h>
15 #include <sys/types.h>
16 #include <sys/stat.h>
17 #include <unistd.h>
18 #include <cstdio>
19 
20 namespace fuzzer {
21 
22 static long GetEpoch(const std::string &Path) {
23  struct stat St;
24  if (stat(Path.c_str(), &St)) return 0;
25  return St.st_mtime;
26 }
27 
28 static std::vector<std::string> ListFilesInDir(const std::string &Dir,
29  long *Epoch) {
30  std::vector<std::string> V;
31  if (Epoch) {
32  auto E = GetEpoch(Dir.c_str());
33  if (*Epoch >= E) return V;
34  *Epoch = E;
35  }
36  DIR *D = opendir(Dir.c_str());
37  if (!D) return V;
38  while (auto E = readdir(D)) {
39  if (E->d_type == DT_REG || E->d_type == DT_LNK)
40  V.push_back(E->d_name);
41  }
42  closedir(D);
43  return V;
44 }
45 
46 Unit FileToVector(const std::string &Path) {
47  std::ifstream T(Path);
48  return Unit((std::istreambuf_iterator<char>(T)),
49  std::istreambuf_iterator<char>());
50 }
51 
52 std::string FileToString(const std::string &Path) {
53  std::ifstream T(Path);
54  return std::string((std::istreambuf_iterator<char>(T)),
55  std::istreambuf_iterator<char>());
56 }
57 
58 void CopyFileToErr(const std::string &Path) {
59  Printf("%s", FileToString(Path).c_str());
60 }
61 
62 void WriteToFile(const Unit &U, const std::string &Path) {
63  std::ofstream OF(Path);
64  OF.write((const char*)U.data(), U.size());
65 }
66 
67 void ReadDirToVectorOfUnits(const char *Path, std::vector<Unit> *V,
68  long *Epoch) {
69  long E = Epoch ? *Epoch : 0;
70  for (auto &X : ListFilesInDir(Path, Epoch)) {
71  auto FilePath = DirPlusFile(Path, X);
72  if (Epoch && GetEpoch(FilePath) < E) continue;
73  V->push_back(FileToVector(FilePath));
74  }
75 }
76 
77 std::string DirPlusFile(const std::string &DirPath,
78  const std::string &FileName) {
79  return DirPath + "/" + FileName;
80 }
81 
82 void PrintFileAsBase64(const std::string &Path) {
83  std::string Cmd = "base64 -w 0 < " + Path + "; echo";
84  ExecuteCommand(Cmd);
85 }
86 
87 void Printf(const char *Fmt, ...) {
88  va_list ap;
89  va_start(ap, Fmt);
90  vfprintf(stderr, Fmt, ap);
91  va_end(ap);
92 }
93 
94 } // namespace fuzzer
void ExecuteCommand(const std::string &Command)
Definition: FuzzerUtil.cpp:72
void PrintFileAsBase64(const std::string &Path)
Definition: FuzzerIO.cpp:82
std::string FileToString(const std::string &Path)
Definition: FuzzerIO.cpp:52
#define T
void Printf(const char *Fmt,...)
Definition: FuzzerIO.cpp:87
std::string DirPlusFile(const std::string &DirPath, const std::string &FileName)
Definition: FuzzerIO.cpp:77
static GCMetadataPrinterRegistry::Add< ErlangGCPrinter > X("erlang","erlang-compatible garbage collector")
static long GetEpoch(const std::string &Path)
Definition: FuzzerIO.cpp:22
void CopyFileToErr(const std::string &Path)
Definition: FuzzerIO.cpp:58
SmallVectorImpl< T >::const_pointer c_str(SmallVectorImpl< T > &str)
void WriteToFile(const Unit &U, const std::string &Path)
Definition: FuzzerIO.cpp:62
Unit FileToVector(const std::string &Path)
Definition: FuzzerIO.cpp:46
std::vector< uint8_t > Unit
static std::vector< std::string > ListFilesInDir(const std::string &Dir, long *Epoch)
Definition: FuzzerIO.cpp:28
void ReadDirToVectorOfUnits(const char *Path, std::vector< Unit > *V, long *Epoch)
Definition: FuzzerIO.cpp:67