Mercurial > libanimone

annotate src/fd/win32.cc @ 22:bc22d57076e3

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dep/animone: separate *BSD into separate files they are wholly different operating systems with very different kernels on the inside
author Paper <paper@paper.us.eu.org>
date Wed, 19 Jun 2024 13:06:10 -0400
parents 973734ebd2be
children 1cfa7d57c022
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19
6596be6917a1 dep/animone: prepare for v1.0 release; it should be ready by now
Paper <paper@paper.us.eu.org>
parents: 14
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1 /*
6596be6917a1 dep/animone: prepare for v1.0 release; it should be ready by now
Paper <paper@paper.us.eu.org>
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2 * fd/win32.cc: support for windows
6596be6917a1 dep/animone: prepare for v1.0 release; it should be ready by now
Paper <paper@paper.us.eu.org>
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3 *
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Paper <paper@paper.us.eu.org>
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4 * this file is noticably more complex than *nix, and that's because
6596be6917a1 dep/animone: prepare for v1.0 release; it should be ready by now
Paper <paper@paper.us.eu.org>
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5 * there is no "simple" way to get the paths of a file. In fact, this thing requires
6596be6917a1 dep/animone: prepare for v1.0 release; it should be ready by now
Paper <paper@paper.us.eu.org>
parents: 14
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6 * you to use *internal functions* that can't even be linked to, hence why we have to
6596be6917a1 dep/animone: prepare for v1.0 release; it should be ready by now
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7 * use GetProcAddress and such. what a mess.
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Paper <paper@paper.us.eu.org>
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8 *
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9 * Speaking of which, because this file uses internal functions of the OS, it is not
6596be6917a1 dep/animone: prepare for v1.0 release; it should be ready by now
Paper <paper@paper.us.eu.org>
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10 * even guaranteed to work far into the future. however, just like with macOS, these
6596be6917a1 dep/animone: prepare for v1.0 release; it should be ready by now
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11 * things have stayed the same since Vista so if Microsoft *really* wants compatibility
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12 * then they're pretty much forced to keeping this the same anyway.
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13 */
14
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14 #include "animone/fd/win32.h"
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15 #include "animone.h"
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16 #include "animone/util/win32.h"
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17
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18 #include <stdexcept>
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19 #include <string>
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20 #include <unordered_map>
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21 #include <vector>
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22
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23 #include <fileapi.h>
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24 #include <handleapi.h>
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25 #include <libloaderapi.h>
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26 #include <ntdef.h>
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27 #include <psapi.h>
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28 #include <shlobj.h>
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29 #include <stringapiset.h>
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30 #include <tlhelp32.h>
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31 #include <windows.h>
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32 #include <winternl.h>
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33
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34 /* SystemExtendedHandleInformation is only available in NT 5.1+ (XP and higher) and provides information for
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35 * 32-bit PIDs, unlike SystemHandleInformation
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36 */
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37 static constexpr SYSTEM_INFORMATION_CLASS SystemExtendedHandleInformation = static_cast<SYSTEM_INFORMATION_CLASS>(0x40);
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38 static constexpr NTSTATUS STATUS_INFO_LENGTH_MISMATCH = 0xC0000004UL;
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39
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40 /* this is filled in at runtime because it's not guaranteed to be (and isn't)
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41 * constant between different versions of Windows */
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42 static unsigned short file_type_index = 0;
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43
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44 struct SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX {
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45 PVOID Object;
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46 ULONG_PTR UniqueProcessId;
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47 HANDLE HandleValue;
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48 ACCESS_MASK GrantedAccess;
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49 USHORT CreatorBackTraceIndex;
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50 USHORT ObjectTypeIndex;
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51 ULONG HandleAttributes;
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52 ULONG Reserved;
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53 };
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54
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55 struct SYSTEM_HANDLE_INFORMATION_EX {
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56 ULONG_PTR NumberOfHandles;
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57 ULONG_PTR Reserved;
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58 SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX Handles[1];
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59 };
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60
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61 namespace animone::internal::win32 {
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62
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63 class Ntdll {
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64 public:
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65 Ntdll() {
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66 ntdll = ::GetModuleHandleW(L"ntdll.dll");
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67 nt_query_system_information = reinterpret_cast<decltype(::NtQuerySystemInformation)*>(
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68 ::GetProcAddress(ntdll, "NtQuerySystemInformation"));
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69 nt_query_object = reinterpret_cast<decltype(::NtQueryObject)*>(::GetProcAddress(ntdll, "NtQueryObject"));
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70 }
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71
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72 NTSTATUS QuerySystemInformation(SYSTEM_INFORMATION_CLASS cls, PVOID sysinfo, ULONG len,
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73 PULONG retlen){
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74 return nt_query_system_information(cls, sysinfo, len, retlen);
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75 }
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76
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77 NTSTATUS QueryObject(HANDLE handle, OBJECT_INFORMATION_CLASS cls, PVOID objinf, ULONG objinflen, PULONG retlen) {
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78 return nt_query_object(handle, cls, objinf, objinflen, retlen);
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79 }
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80
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81 private:
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82 HMODULE ntdll;
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83 decltype(::NtQuerySystemInformation)* nt_query_system_information;
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84 decltype(::NtQueryObject)* nt_query_object;
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85 };
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86
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87 Ntdll ntdll;
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88
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89 static HANDLE DuplicateHandle(HANDLE process_handle, HANDLE handle) {
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90 HANDLE dup_handle = nullptr;
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91 const bool result =
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92 ::DuplicateHandle(process_handle, handle, ::GetCurrentProcess(), &dup_handle, 0, false, DUPLICATE_SAME_ACCESS);
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93 return result ? dup_handle : nullptr;
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94 }
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95
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96 static std::vector<SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX> GetSystemHandleInformation() {
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97 /* we should really put a cap on this */
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98 ULONG cb = 1 << 19;
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99 NTSTATUS status = STATUS_NO_MEMORY;
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100 std::unique_ptr<SYSTEM_HANDLE_INFORMATION_EX> info;
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101
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102 do {
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103 info.reset(reinterpret_cast<SYSTEM_HANDLE_INFORMATION_EX*>(malloc(cb *= 2)));
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104 if (!info)
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105 continue;
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106
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107 status = ntdll.QuerySystemInformation(SystemExtendedHandleInformation, info.get(), cb, &cb);
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108 } while (status == STATUS_INFO_LENGTH_MISMATCH);
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109
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110 if (!NT_SUCCESS(status))
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111 return {};
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112
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113 std::vector<SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX> res;
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114
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115 ULONG_PTR handles = info->NumberOfHandles;
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116 if (!handles)
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117 return {};
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118
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119 res.reserve(handles);
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120
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121 SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX* entry = info->Handles;
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122 do {
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123 if (entry)
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124 res.push_back(*(entry++));
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125 } while (--handles);
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126
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127 return res;
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128 }
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129
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130 static std::wstring GetHandleType(HANDLE handle) {
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131 OBJECT_TYPE_INFORMATION info = {0};
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132 ntdll.QueryObject(handle, ObjectTypeInformation, &info, sizeof(info), NULL);
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133 return std::wstring(info.TypeName.Buffer, info.TypeName.Length);
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134 }
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135
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136 static std::wstring GetFinalPathNameByHandle(HANDLE handle) {
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137 std::wstring buffer;
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138
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139 DWORD size = ::GetFinalPathNameByHandleW(handle, NULL, 0, FILE_NAME_NORMALIZED | VOLUME_NAME_DOS);
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140 buffer.resize(size);
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141 ::GetFinalPathNameByHandleW(handle, &buffer.front(), buffer.size(), FILE_NAME_NORMALIZED | VOLUME_NAME_DOS);
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142
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143 return buffer;
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144 }
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145
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146 static bool IsFileHandle(HANDLE handle, unsigned short object_type_index) {
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Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
147 if (file_type_index)
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
148 return object_type_index == file_type_index;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
149 else if (!handle)
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
150 return true;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
151 else if (GetHandleType(handle) == L"File") {
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
152 file_type_index = object_type_index;
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Paper <paper@paper.us.eu.org>
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diff changeset
153 return true;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
154 }
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
155 return false;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
156 }
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
157
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
158 static bool IsFileMaskOk(ACCESS_MASK access_mask) {
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
159 if (!(access_mask & FILE_READ_DATA))
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
160 return false;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
161
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
162 if ((access_mask & FILE_APPEND_DATA) || (access_mask & FILE_WRITE_EA) || (access_mask & FILE_WRITE_ATTRIBUTES))
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
163 return false;
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Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
164
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Paper <paper@paper.us.eu.org>
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diff changeset
165 return true;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
166 }
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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167
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Paper <paper@paper.us.eu.org>
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diff changeset
168 static bool IsFilePathOk(const std::wstring& path) {
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Paper <paper@paper.us.eu.org>
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diff changeset
169 if (path.empty())
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Paper <paper@paper.us.eu.org>
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diff changeset
170 return false;
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Paper <paper@paper.us.eu.org>
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diff changeset
171
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Paper <paper@paper.us.eu.org>
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diff changeset
172 if (IsSystemDirectory(path))
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Paper <paper@paper.us.eu.org>
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173 return false;
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Paper <paper@paper.us.eu.org>
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diff changeset
174
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Paper <paper@paper.us.eu.org>
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diff changeset
175 const auto file_attributes = GetFileAttributesW(path.c_str());
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Paper <paper@paper.us.eu.org>
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diff changeset
176 if ((file_attributes == INVALID_FILE_ATTRIBUTES) || (file_attributes & FILE_ATTRIBUTE_DIRECTORY))
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Paper <paper@paper.us.eu.org>
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diff changeset
177 return false;
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Paper <paper@paper.us.eu.org>
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diff changeset
178
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Paper <paper@paper.us.eu.org>
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diff changeset
179 return true;
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Paper <paper@paper.us.eu.org>
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diff changeset
180 }
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diff changeset
181
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Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
182 bool GetProcessName(pid_t pid, std::string& name) {
21
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
183 std::string path = GetProcessPath(pid);
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
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diff changeset
184 if (path.empty() || !VerifyProcessPath(path))
14
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diff changeset
185 return false;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
186
21
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
187 name = GetFileNameFromPath(path);
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
188 if (!VerifyProcessFileName(name))
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
189 return false;
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
190
14
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
191 return true;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
192 }
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Paper <paper@paper.us.eu.org>
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diff changeset
193
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Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
194 bool EnumerateOpenProcesses(process_proc_t process_proc) {
21
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
195 Handle process_snap(::CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0));
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
196 if (process_snap.get() == INVALID_HANDLE_VALUE)
14
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
197 return false;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
198
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
199 PROCESSENTRY32 pe32;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
200 pe32.dwSize = sizeof(PROCESSENTRY32);
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
201
21
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
202 if (!::Process32First(process_snap.get(), &pe32))
14
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
203 return false;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
204
21
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
205 do {
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
206 std::string name;
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
207 if (!GetProcessName(pe32.th32ProcessID, name))
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
208 continue;
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
209
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
210 if (!process_proc({.platform = ExecutablePlatform::Win32, .pid = pe32.th32ProcessID, .comm = name}))
14
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
211 return false;
21
973734ebd2be dep/animone: REFACTOR ALL THE THINGS
Paper <paper@paper.us.eu.org>
parents: 19
diff changeset
212 } while (::Process32Next(process_snap.get(), &pe32));
14
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
213
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
214 return true;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
215 }
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
216
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
217 /* this could be changed to being a callback, but... I'm too lazy right now :) */
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
218 bool EnumerateOpenFiles(const std::set<pid_t>& pids, open_file_proc_t open_file_proc) {
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
219 if (!open_file_proc)
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
220 return false;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
221
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
222 std::unordered_map<pid_t, Handle> proc_handles;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
223
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
224 for (const pid_t& pid : pids) {
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
225 const HANDLE handle = ::OpenProcess(PROCESS_DUP_HANDLE, false, pid);
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
226 if (handle != INVALID_HANDLE_VALUE)
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
227 proc_handles[pid] = Handle(handle);
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
228 }
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
229
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
230 if (proc_handles.empty())
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
231 return false;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
232
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
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diff changeset
233 std::vector<SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX> info = GetSystemHandleInformation();
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
234
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
235 for (const auto& h : info) {
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
236 const pid_t pid = h.UniqueProcessId;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
237 if (!pids.count(pid))
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
238 continue;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
239
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
240 if (!IsFileHandle(nullptr, h.ObjectTypeIndex))
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
241 continue;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
242
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
243 if (!IsFileMaskOk(h.GrantedAccess))
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
244 continue;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
245
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
246 Handle handle(DuplicateHandle(proc_handles[pid].get(), h.HandleValue));
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
247 if (handle.get() == INVALID_HANDLE_VALUE)
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
248 continue;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
249
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
250 if (GetFileType(handle.get()) != FILE_TYPE_DISK)
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
251 continue;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
252
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
253 const std::wstring path = GetFinalPathNameByHandle(handle.get());
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
254 if (!IsFilePathOk(path))
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
255 continue;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
256
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
257 if (!open_file_proc({pid, ToUtf8String(path)}))
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
258 return false;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
259 }
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
260
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
261 return true;
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
262 }
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
263
27b988a1048c *: convert all files CRLF -> LF
Paper <paper@paper.us.eu.org>
parents: 12
diff changeset
264 } // namespace animone::internal::win32