plugin/qelfparser_p.cpp

Switch to Source codePreprocessed file
LineSource CodeCoverage
1 -
2 -
3 -
4 -
5 -
6 -
7 -
8 -
9 -
10const char *QElfParser::parseSectionHeader(const char *data, ElfSectionHeader *sh) -
11{ -
12 sh->name = read<qelfword_t>(data); -
13 data += sizeof(qelfword_t); -
14 sh->type = read<qelfword_t>(data); -
15 data += sizeof(qelfword_t) -
16 + sizeof(qelfaddr_t) -
17 + sizeof(qelfaddr_t); -
18 sh->offset = read<qelfoff_t>(data); -
19 data += sizeof(qelfoff_t); -
20 sh->size = read<qelfoff_t>(data); -
21 data += sizeof(qelfoff_t); -
22 return data;
executed: return data;
Execution Count:3948
3948
23} -
24 -
25int QElfParser::parse(const char *dataStart, ulong fdlen, const QString &library, QLibraryPrivate *lib, long *pos, ulong *sectionlen) -
26{ -
27 -
28 -
29 -
30 -
31 if (fdlen < 64){
evaluated: fdlen < 64
TRUEFALSE
yes
Evaluation Count:2
yes
Evaluation Count:484
2-484
32 if (lib)
partially evaluated: lib
TRUEFALSE
yes
Evaluation Count:2
no
Evaluation Count:0
0-2
33 lib->errorString = QLibrary::tr("'%1' is not an ELF object (%2)").arg(library).arg(QLatin1String("file too small"));
executed: lib->errorString = QLibrary::tr("'%1' is not an ELF object (%2)").arg(library).arg(QLatin1String("file too small"));
Execution Count:2
2
34 return NotElf;
executed: return NotElf;
Execution Count:2
2
35 } -
36 const char *data = dataStart; -
37 if (qstrncmp(data, "\177ELF", 4) != 0) {
evaluated: qstrncmp(data, "\177ELF", 4) != 0
TRUEFALSE
yes
Evaluation Count:253
yes
Evaluation Count:231
231-253
38 if (lib)
partially evaluated: lib
TRUEFALSE
yes
Evaluation Count:253
no
Evaluation Count:0
0-253
39 lib->errorString = QLibrary::tr("'%1' is not an ELF object").arg(library);
executed: lib->errorString = QLibrary::tr("'%1' is not an ELF object").arg(library);
Execution Count:253
253
40 return NotElf;
executed: return NotElf;
Execution Count:253
253
41 } -
42 -
43 if (data[4] != 1 && data[4] != 2) {
partially evaluated: data[4] != 1
TRUEFALSE
yes
Evaluation Count:231
no
Evaluation Count:0
partially evaluated: data[4] != 2
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:231
0-231
44 if (lib)
never evaluated: lib
0
45 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("odd cpu architecture"));
never executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("odd cpu architecture"));
0
46 return Corrupt;
never executed: return Corrupt;
0
47 } -
48 m_bits = (data[4] << 5); -
49 -
50 -
51 -
52 -
53 if ((sizeof(void*) == 4 && m_bits != 32) || (sizeof(void*) == 8 && m_bits != 64)) {
partially evaluated: sizeof(void*) == 4
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:231
never evaluated: m_bits != 32
partially evaluated: sizeof(void*) == 8
TRUEFALSE
yes
Evaluation Count:231
no
Evaluation Count:0
partially evaluated: m_bits != 64
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:231
0-231
54 if (lib)
never evaluated: lib
0
55 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("wrong cpu architecture"));
never executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("wrong cpu architecture"));
0
56 return Corrupt;
never executed: return Corrupt;
0
57 } -
58 -
59 if (data[5] == 0) {
partially evaluated: data[5] == 0
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:231
0-231
60 if (lib)
never evaluated: lib
0
61 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("odd endianess"));
never executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("odd endianess"));
0
62 return Corrupt;
never executed: return Corrupt;
0
63 } -
64 m_endian = (data[5] == 1 ? ElfLittleEndian : ElfBigEndian);
partially evaluated: data[5] == 1
TRUEFALSE
yes
Evaluation Count:231
no
Evaluation Count:0
0-231
65 -
66 data += 16 -
67 + sizeof(qelfhalf_t) -
68 + sizeof(qelfhalf_t) -
69 + sizeof(qelfword_t) -
70 + sizeof(qelfaddr_t) -
71 + sizeof(qelfoff_t); -
72 -
73 qelfoff_t e_shoff = read<qelfoff_t> (data); -
74 data += sizeof(qelfoff_t) -
75 + sizeof(qelfword_t); -
76 -
77 qelfhalf_t e_shsize = read<qelfhalf_t> (data); -
78 -
79 if (e_shsize > fdlen) {
partially evaluated: e_shsize > fdlen
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:231
0-231
80 if (lib)
never evaluated: lib
0
81 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("unexpected e_shsize"));
never executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("unexpected e_shsize"));
0
82 return Corrupt;
never executed: return Corrupt;
0
83 } -
84 -
85 data += sizeof(qelfhalf_t) -
86 + sizeof(qelfhalf_t) -
87 + sizeof(qelfhalf_t); -
88 -
89 qelfhalf_t e_shentsize = read<qelfhalf_t> (data); -
90 -
91 if (e_shentsize % 4){
partially evaluated: e_shentsize % 4
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:231
0-231
92 if (lib)
never evaluated: lib
0
93 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("unexpected e_shentsize"));
never executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library).arg(QLatin1String("unexpected e_shentsize"));
0
94 return Corrupt;
never executed: return Corrupt;
0
95 } -
96 data += sizeof(qelfhalf_t); -
97 qelfhalf_t e_shnum = read<qelfhalf_t> (data); -
98 data += sizeof(qelfhalf_t); -
99 qelfhalf_t e_shtrndx = read<qelfhalf_t> (data); -
100 data += sizeof(qelfhalf_t); -
101 -
102 if ((quint32)(e_shnum * e_shentsize) > fdlen) {
partially evaluated: (quint32)(e_shnum * e_shentsize) > fdlen
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:231
0-231
103 if (lib)
never evaluated: lib
0
104 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) 0
105 .arg(QLatin1String("announced %2 sections, each %3 bytes, exceed file size")) 0
106 .arg(e_shnum).arg(e_shentsize);
never executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) .arg(QLatin1String("announced %2 sections, each %3 bytes, exceed file size")) .arg(e_shnum).arg(e_shentsize);
0
107 return Corrupt;
never executed: return Corrupt;
0
108 } -
109 -
110 -
111 -
112 -
113 -
114 ElfSectionHeader strtab; -
115 qulonglong soff = e_shoff + e_shentsize * (e_shtrndx); -
116 -
117 if ((soff + e_shentsize) > fdlen || soff % 4 || soff == 0) {
partially evaluated: (soff + e_shentsize) > fdlen
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:231
evaluated: soff % 4
TRUEFALSE
yes
Evaluation Count:1
yes
Evaluation Count:230
partially evaluated: soff == 0
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:230
0-231
118 if (lib)
partially evaluated: lib
TRUEFALSE
yes
Evaluation Count:1
no
Evaluation Count:0
0-1
119 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) 1
120 .arg(QLatin1String("shstrtab section header seems to be at %1")) 1
121 .arg(QString::number(soff, 16));
executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) .arg(QLatin1String("shstrtab section header seems to be at %1")) .arg(QString::number(soff, 16));
Execution Count:1
1
122 return Corrupt;
executed: return Corrupt;
Execution Count:1
1
123 } -
124 -
125 parseSectionHeader(dataStart + soff, &strtab); -
126 m_stringTableFileOffset = strtab.offset; -
127 -
128 if ((quint32)(m_stringTableFileOffset + e_shentsize) >= fdlen || m_stringTableFileOffset == 0) {
partially evaluated: (quint32)(m_stringTableFileOffset + e_shentsize) >= fdlen
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:230
partially evaluated: m_stringTableFileOffset == 0
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:230
0-230
129 if (lib)
never evaluated: lib
0
130 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) 0
131 .arg(QLatin1String("string table seems to be at %1")) 0
132 .arg(QString::number(soff, 16));
never executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) .arg(QLatin1String("string table seems to be at %1")) .arg(QString::number(soff, 16));
0
133 return Corrupt;
never executed: return Corrupt;
0
134 } -
135 -
136 -
137 -
138 -
139 -
140 const char *s = dataStart + e_shoff; -
141 for (int i = 0; i < e_shnum; ++i) {
evaluated: i < e_shnum
TRUEFALSE
yes
Evaluation Count:3718
yes
Evaluation Count:1
1-3718
142 ElfSectionHeader sh; -
143 parseSectionHeader(s, &sh); -
144 if (sh.name == 0) {
evaluated: sh.name == 0
TRUEFALSE
yes
Evaluation Count:232
yes
Evaluation Count:3486
232-3486
145 s += e_shentsize; -
146 continue;
executed: continue;
Execution Count:232
232
147 } -
148 const char *shnam = dataStart + m_stringTableFileOffset + sh.name; -
149 -
150 if (m_stringTableFileOffset + sh.name > fdlen) {
evaluated: m_stringTableFileOffset + sh.name > fdlen
TRUEFALSE
yes
Evaluation Count:1
yes
Evaluation Count:3485
1-3485
151 if (lib)
partially evaluated: lib
TRUEFALSE
yes
Evaluation Count:1
no
Evaluation Count:0
0-1
152 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) 1
153 .arg(QLatin1String("section name %2 of %3 behind end of file")) 1
154 .arg(i).arg(e_shnum);
executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) .arg(QLatin1String("section name %2 of %3 behind end of file")) .arg(i).arg(e_shnum);
Execution Count:1
1
155 return Corrupt;
executed: return Corrupt;
Execution Count:1
1
156 } -
157 -
158 -
159 -
160 -
161 -
162 if (qstrcmp(shnam, ".qtmetadata") == 0 || qstrcmp(shnam, ".rodata") == 0) {
evaluated: qstrcmp(shnam, ".qtmetadata") == 0
TRUEFALSE
yes
Evaluation Count:227
yes
Evaluation Count:3258
evaluated: qstrcmp(shnam, ".rodata") == 0
TRUEFALSE
yes
Evaluation Count:230
yes
Evaluation Count:3028
227-3258
163 if (!(sh.type & 0x1)) {
evaluated: !(sh.type & 0x1)
TRUEFALSE
yes
Evaluation Count:1
yes
Evaluation Count:456
1-456
164 if (shnam[1] == 'r') {
partially evaluated: shnam[1] == 'r'
TRUEFALSE
yes
Evaluation Count:1
no
Evaluation Count:0
0-1
165 if (lib)
partially evaluated: lib
TRUEFALSE
yes
Evaluation Count:1
no
Evaluation Count:0
0-1
166 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) 1
167 .arg(QLatin1String("empty .rodata. not a library."));
executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) .arg(QLatin1String("empty .rodata. not a library."));
Execution Count:1
1
168 return Corrupt;
executed: return Corrupt;
Execution Count:1
1
169 } -
170 -
171 -
172 -
173 s += e_shentsize; -
174 continue;
never executed: continue;
0
175 } -
176 -
177 if (sh.offset == 0 || (sh.offset + sh.size) > fdlen || sh.size < 1) {
partially evaluated: sh.offset == 0
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:456
partially evaluated: (sh.offset + sh.size) > fdlen
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:456
partially evaluated: sh.size < 1
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:456
0-456
178 if (lib)
never evaluated: lib
0
179 lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) 0
180 .arg(QLatin1String("missing section data. This is not a library."));
never executed: lib->errorString = QLibrary::tr("'%1' is an invalid ELF object (%2)").arg(library) .arg(QLatin1String("missing section data. This is not a library."));
0
181 return Corrupt;
never executed: return Corrupt;
0
182 } -
183 *pos = sh.offset; -
184 *sectionlen = sh.size - 1; -
185 if (shnam[1] == 'q')
evaluated: shnam[1] == 'q'
TRUEFALSE
yes
Evaluation Count:227
yes
Evaluation Count:229
227-229
186 return QtMetaDataSection;
executed: return QtMetaDataSection;
Execution Count:227
227
187 }
executed: }
Execution Count:229
229
188 s += e_shentsize; -
189 }
executed: }
Execution Count:3257
3257
190 return NoQtSection;
executed: return NoQtSection;
Execution Count:1
1
191} -
192 -
193 -
194 -
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