Bug Summary

File:rootdir/src/utils/aLinkCreator/src/ed2khash.cpp
Warning:line 114, column 15
Potential leak of memory pointed to by 'tmpCharHash'

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name ed2khash.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/rootdir/src/utils/aLinkCreator/src -fcoverage-compilation-dir=/rootdir/src/utils/aLinkCreator/src -resource-dir /usr/lib/llvm-19/lib/clang/19 -D HAVE_CONFIG_H -I . -I ../../../.. -D USE_WX_EXTENSIONS -I /usr/lib/x86_64-linux-gnu/wx/include/gtk3-unicode-3.2 -I /usr/include/wx-3.2 -D _FILE_OFFSET_BITS=64 -D WXUSINGDLL -D __WXGTK__ -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/x86_64-linux-gnu/c++/14 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/backward -internal-isystem /usr/lib/llvm-19/lib/clang/19/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wno-register -fdeprecated-macro -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fcxx-exceptions -fexceptions -analyzer-checker deadcode.DeadStores -analyzer-checker alpha.deadcode.UnreachableCode -analyzer-checker alpha.core.CastSize -analyzer-checker alpha.core.CastToStruct -analyzer-checker alpha.core.IdenticalExpr -analyzer-checker alpha.security.ArrayBoundV2 -analyzer-checker alpha.security.MallocOverflow -analyzer-checker alpha.security.ReturnPtrRange -analyzer-checker alpha.unix.SimpleStream -analyzer-checker alpha.unix.cstring.BufferOverlap -analyzer-checker alpha.unix.cstring.NotNullTerminated -analyzer-checker alpha.unix.cstring.OutOfBounds -analyzer-checker alpha.core.FixedAddr -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /rootdir/html-report/2025-01-14-161821-17216-1 -x c++ ed2khash.cpp
1////////////////////////////////////////////////////////////////////////////////
2/// Name: Ed2kHash Class
3///
4/// Purpose: aMule ed2k link creator
5///
6/// Author: ThePolish <thepolish@vipmail.ru>
7///
8/// Copyright (c) 2004-2011 ThePolish ( thepolish@vipmail.ru )
9///
10/// Copyright (c) 2004-2011 Marcelo Roberto Jimenez ( phoenix@amule.org )
11///
12/// This program is free software; you can redistribute it and/or modify
13/// it under the terms of the GNU General Public License as published by
14/// the Free Software Foundation; either version 2 of the License, or
15/// (at your option) any later version.
16///
17/// This program is distributed in the hope that it will be useful,
18/// but WITHOUT ANY WARRANTY; without even the implied warranty of
19/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20/// GNU General Public License for more details.
21///
22/// You should have received a copy of the GNU General Public License
23/// along with this program; if not, write to the
24/// Free Software Foundation, Inc.,
25/// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
26////////////////////////////////////////////////////////////////////////////////
27
28
29#include <wx/ffile.h>
30#include <wx/log.h>
31#include <wx/regex.h>
32
33#include "ed2khash.h"
34
35
36/// Constructor
37Ed2kHash::Ed2kHash():MD4()
38{
39 m_ed2kArrayOfHashes.Clear();
40 m_filename.Clear();
41 m_fileSize=0;
42}
43
44/// Destructor
45Ed2kHash::~Ed2kHash()
46{}
47
48/// Set Ed2k hash from a file
49// returns false if aborted
50bool Ed2kHash::SetED2KHashFromFile(const wxFileName& filename, MD4Hook hook)
51{
52 // Open file and let wxFFile destructor close the file
53 // Closing it explicitly may crash on Win32 ...
54 wxFFile file(filename.GetFullPath(), wxT("rbS")L"rbS");
55 if (! file.IsOpened())
2
←
Taking false branch
→
56 {
57 // This doesn't make much sense to me, but it is what it was before and actually works.
58 wxLogErrorfor ( bool wxdoif58 = false; !wxdoif58 && wxLog::IsLevelEnabled
(wxLOG_Error, wxString::FromAscii(wxLOG_COMPONENT)); wxdoif58
= true ) wxLogger(wxLOG_Error, "ed2khash.cpp", 58, __FUNCTION__
, wxLOG_COMPONENT).Log(_("Unable to open %s")wxGetTranslation(("Unable to open %s")), ((const char*)filename.GetFullPath().mb_str(wxConvISO8859_1wxGet_wxConvISO8859_1())));
59 return (false);
60 }
61 else
62 {
63 unsigned char ret[MD4_HASHLEN_BYTE];
64 MD4Context hdc;
65
66 size_t read;
67 size_t partcount;
68 wxFileOffset totalread;
69
70 char *buf = new char[BUFSIZE];
71
72 bool goAhead = true;
73
74#ifdef WANT_STRING_IMPLEMENTATION
75
76 wxString tmpHash(wxEmptyString);
77#else
78
79 unsigned char* tmpCharHash = NULL__null;
80#endif
81 // Clear Ed2k Hash
82 m_ed2kArrayOfHashes.Clear();
83
84 // Processing each block
85 totalread=0;
86 partcount = 0;
87 while (!file.Eof())
3
←
Assuming the condition is true
→
4
←
Loop condition is true. Entering loop body
→
10
←
Assuming the condition is true
→
11
←
Loop condition is true. Entering loop body
→
88 {
89 size_t dataread = 0;
90 MD4Init(&hdc);
91 while (dataread
4.1
'dataread' is < 'PARTSIZE'
11.1
'dataread' is < 'PARTSIZE'
 < PARTSIZE && !file.Eof())
5
←
Assuming the condition is false
→
6
←
Loop condition is false. Execution continues on line 119
→
12
←
Assuming the condition is true
→
13
←
Loop condition is true. Entering loop body
→
92 {
93 if (hook)
14
←
Assuming 'hook' is non-null
→
15
←
Taking true branch
→
94 {
95 goAhead = hook((int)((double)(100.0 * totalread) / file.Length()));
96 }
97 if (goAhead)
16
←
Assuming 'goAhead' is false
→
17
←
Taking false branch
→
98 {
99 if ((dataread + BUFSIZE) > PARTSIZE)
100 {
101 read = file.Read(buf, PARTSIZE - dataread);
102 }
103 else
104 {
105 read = file.Read(buf, BUFSIZE);
106 }
107 dataread += read;
108 totalread += read;
109 MD4Update(&hdc, reinterpret_cast<unsigned char const *>(buf),
110 read);
111 }
112 else
113 {
114 delete [] buf;
18
←
Potential leak of memory pointed to by 'tmpCharHash'
115 return (false);
116 }
117
118 }
119 MD4Final(&hdc, ret);
120
121 // Add part-hash
122 m_ed2kArrayOfHashes.Add(charToHex(reinterpret_cast<const char *>(ret),
123 MD4_HASHLEN_BYTE));
124
125 partcount++;
126
127#ifdef WANT_STRING_IMPLEMENTATION
128 // MD4_HASHLEN_BYTE is ABSOLUTELY needed as we dont want NULL
129 // character to be interpreted as the end of the parthash string
130#if wxUSE_UNICODE1
131
132 tmpHash += wxString(reinterpret_cast<const wchar_t *>(ret),MD4_HASHLEN_BYTE);
133#else
134
135 tmpHash += wxString(reinterpret_cast<const char *>(ret),MD4_HASHLEN_BYTE);
136#endif
137#else
138
139 unsigned char *tmpPtr = (unsigned char*)realloc(tmpCharHash,
7
←
Memory is allocated
→
140 sizeof(unsigned char) * (MD4_HASHLEN_BYTE * partcount));
141 if (tmpPtr) {
8
←
Assuming 'tmpPtr' is non-null
→
9
←
Taking true branch
→
142 tmpCharHash = tmpPtr;
143 } else {
144 delete [] buf;
145 free(tmpCharHash);
146 wxLogErrorfor ( bool wxdoif146 = false; !wxdoif146 && wxLog::IsLevelEnabled
(wxLOG_Error, wxString::FromAscii(wxLOG_COMPONENT)); wxdoif146
= true ) wxLogger(wxLOG_Error, "ed2khash.cpp", 146, __FUNCTION__
, wxLOG_COMPONENT).Log(_("Out of memory while calculating ed2k hash!")wxGetTranslation(("Out of memory while calculating ed2k hash!"
)));
147 return (false);
148 }
149 memcpy ( tmpCharHash + MD4_HASHLEN_BYTE * (partcount - 1), ret, MD4_HASHLEN_BYTE );
150#endif
151
152 }
153
154 delete [] buf;
155
156 // hash == hash of concatenned parthashes
157 if (partcount > 1)
158 {
159 wxString finalHash;
160
161#ifdef WANT_STRING_IMPLEMENTATION
162
163 finalHash=calcMd4FromString(tmpHash);
164#else
165
166 MD4Init(&hdc);
167 MD4Update(&hdc, tmpCharHash, MD4_HASHLEN_BYTE * partcount);
168 MD4Final(&hdc, ret);
169
170 finalHash = charToHex(reinterpret_cast<const char *>(ret),
171 MD4_HASHLEN_BYTE);
172#endif
173
174 m_ed2kArrayOfHashes.Add(finalHash);
175 }
176
177#ifndef WANT_STRING_IMPLEMENTATION
178 free(tmpCharHash);
179 tmpCharHash=NULL__null;
180#endif
181
182 m_ed2kArrayOfHashes.Shrink();
183
184 // Set members
185 m_fileSize = file.Length();
186 m_filename = filename.GetFullName();
187
188 return true;
189 }
190}
191
192/// Set Ed2k hash from a file
193bool Ed2kHash::SetED2KHashFromFile(const wxString& filename, MD4Hook hook)
194{
195 return SetED2KHashFromFile(wxFileName(filename), hook);
1
Calling 'Ed2kHash::SetED2KHashFromFile'
→
196}
197
198#define WXLONGLONGFMTSPECL"ll" wxT(wxLongLongFmtSpec)L"ll"
199
200/// Get Ed2k link
201wxString Ed2kHash::GetED2KLink(const bool addPartHashes, const wxArrayString* arrayOfUrls)
202{
203 // Constructing ed2k basic link
204 wxString ed2kLink = wxT("ed2k://|file|")L"ed2k://|file|" + CleanFilename(m_filename)
205 + wxString::Format(wxT("|%")L"|%" WXLONGLONGFMTSPECL"ll" wxT("u|")L"u|", m_fileSize)
206 + m_ed2kArrayOfHashes.Last() + wxT("|")L"|";
207
208
209 // Add optional URLs
210 if ( arrayOfUrls && !arrayOfUrls->IsEmpty())
211 {
212 size_t i;
213 for ( i = 0; i < arrayOfUrls->GetCount(); i++ )
214 {
215 ed2kLink += wxT("s=")L"s=" + (*arrayOfUrls)[i] + wxT("|")L"|";
216 }
217 }
218
219 // Add Optional part-hashes
220 if (addPartHashes && m_ed2kArrayOfHashes.GetCount()>1)
221 {
222 ed2kLink += wxT("p=")L"p=";
223 size_t i;
224 for (i=0;i<(m_ed2kArrayOfHashes.GetCount()-1);++i)
225 {
226 ed2kLink += m_ed2kArrayOfHashes[i] + wxT(":")L":";
227 }
228 ed2kLink.RemoveLast(); // Remove last :
229 ed2kLink += wxT("|")L"|";
230 }
231
232 // Add last slash
233 ed2kLink += wxT("/")L"/";
234
235 return ed2kLink;
236}
237
238/// Strip all non-alphanumeric characters of a filename string
239wxString Ed2kHash::CleanFilename(const wxString& filename)
240{
241 wxString name(filename);
242
243 wxRegEx toStrip(wxT("[^[:alnum:]_.-]")L"[^[:alnum:]_.-]");
244 toStrip.Replace(&name, wxT("_")L"_");
245
246 return (name);
247}
248
249/// Get Ed2k Array of hashes
250wxArrayString Ed2kHash::GetED2KHash()
251{
252 return (m_ed2kArrayOfHashes);
253}
254// File_checked_for_headers