GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/sanitizer.cc
Date: 2026-04-19 02:41:37
Exec Total Coverage
Lines: 69 71 97.2%
Branches: 40 49 81.6%
Line Branch Exec Source
1 /**
2 * This file is part of the CernVM File System.
3 *
4 * Provides input data sanitizer in the form of whitelist of character ranges.
5 */
6
7
8 #include "sanitizer.h"
9
10 #include <cassert>
11
12 using namespace std; // NOLINT
13
14 #ifdef CVMFS_NAMESPACE_GUARD
15 namespace CVMFS_NAMESPACE_GUARD {
16 #endif
17
18 namespace sanitizer {
19
20 29642 CharRange::CharRange(const char range_begin, const char range_end) {
21 29642 range_begin_ = range_begin;
22 29642 range_end_ = range_end;
23 29642 }
24
25
26 26116 CharRange::CharRange(const char single_char) {
27 26116 range_begin_ = range_end_ = single_char;
28 26116 }
29
30
31 361476 bool CharRange::InRange(const char c) const {
32
4/4
✓ Branch 0 taken 296707 times.
✓ Branch 1 taken 64769 times.
✓ Branch 2 taken 186890 times.
✓ Branch 3 taken 109817 times.
 361476 return (c >= range_begin_) && (c <= range_end_);
33 }
34
35
36 //------------------------------------------------------------------------------
37
38
39 25580 InputSanitizer::InputSanitizer(const string &whitelist) : max_length_(-1) {
40
1/2
✓ Branch 1 taken 25580 times.
✗ Branch 2 not taken.
 25580 InitValidRanges(whitelist);
41 25580 }
42
43
44 65 InputSanitizer::InputSanitizer(const string &whitelist, int max_length)
45 65 : max_length_(max_length) {
46
1/2
✓ Branch 1 taken 65 times.
✗ Branch 2 not taken.
 65 InitValidRanges(whitelist);
47 65 }
48
49
50 25645 void InputSanitizer::InitValidRanges(const std::string &whitelist) {
51 // Parse the whitelist
52 25645 const unsigned length = whitelist.length();
53 25645 unsigned pickup_pos = 0;
54
2/2
✓ Branch 0 taken 85400 times.
✓ Branch 1 taken 25645 times.
 111045 for (unsigned i = 0; i < length; ++i) {
55
7/8
✓ Branch 0 taken 59768 times.
✓ Branch 1 taken 25632 times.
✓ Branch 3 taken 29642 times.
✓ Branch 4 taken 30126 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 29642 times.
✓ Branch 7 taken 55758 times.
✓ Branch 8 taken 29642 times.
 85400 if ((i + 1 >= length) || (whitelist[i + 1] == ' ') || (i == length - 1)) {
56
1/2
✓ Branch 1 taken 55758 times.
✗ Branch 2 not taken.
 55758 const string range = whitelist.substr(pickup_pos, i - pickup_pos + 1);
57
2/3
✓ Branch 1 taken 26116 times.
✓ Branch 2 taken 29642 times.
✗ Branch 3 not taken.
 55758 switch (range.length()) {
58 26116 case 1:
59
1/2
✓ Branch 3 taken 26116 times.
✗ Branch 4 not taken.
 26116 valid_ranges_.push_back(CharRange(range[0]));
60 26116 break;
61 29642 case 2:
62
1/2
✓ Branch 4 taken 29642 times.
✗ Branch 5 not taken.
 29642 valid_ranges_.push_back(CharRange(range[0], range[1]));
63 29642 break;
64 ✗ default:
65 ✗ assert(false);
66 }
67 55758 ++i;
68 55758 pickup_pos = i + 1;
69 55758 }
70 }
71 25645 }
72
73
74 26869 bool InputSanitizer::Sanitize(std::string::const_iterator begin,
75 std::string::const_iterator end,
76 std::string *filtered_output) const {
77 26869 int pos = 0;
78 26869 bool is_sane = true;
79
2/2
✓ Branch 2 taken 238383 times.
✓ Branch 3 taken 26817 times.
 265200 for (; begin != end; ++begin) {
80
2/2
✓ Branch 2 taken 186890 times.
✓ Branch 3 taken 51493 times.
 238383 if (CheckRanges(*begin)) {
81
4/4
✓ Branch 0 taken 637 times.
✓ Branch 1 taken 186253 times.
✓ Branch 2 taken 52 times.
✓ Branch 3 taken 585 times.
 186890 if ((max_length_ >= 0) && (pos >= max_length_)) {
82 52 is_sane = false;
83 52 break;
84 }
85 186838 filtered_output->push_back(*begin);
86 186838 pos++;
87 } else {
88 51493 is_sane = false;
89 }
90 }
91 26869 return is_sane;
92 }
93
94
95 238383 bool InputSanitizer::CheckRanges(const char chr) const {
96
2/2
✓ Branch 1 taken 361476 times.
✓ Branch 2 taken 51493 times.
 412969 for (unsigned j = 0; j < valid_ranges_.size(); ++j) {
97
2/2
✓ Branch 2 taken 186890 times.
✓ Branch 3 taken 174586 times.
 361476 if (valid_ranges_[j].InRange(chr)) {
98 186890 return true;
99 }
100 }
101 51493 return false;
102 }
103
104
105 672 string InputSanitizer::Filter(const std::string &input) const {
106 672 string filtered_output;
107
1/2
✓ Branch 1 taken 672 times.
✗ Branch 2 not taken.
 672 Sanitize(input, &filtered_output);
108 672 return filtered_output;
109 }
110
111
112 26223 bool InputSanitizer::IsValid(const std::string &input) const {
113 26223 string dummy;
114
1/2
✓ Branch 1 taken 26223 times.
✗ Branch 2 not taken.
 52446 return Sanitize(input, &dummy);
115 26223 }
116
117
118 550 bool IntegerSanitizer::Sanitize(std::string::const_iterator begin,
119 std::string::const_iterator end,
120 std::string *filtered_output) const {
121
2/2
✓ Branch 1 taken 13 times.
✓ Branch 2 taken 537 times.
 550 if (std::distance(begin, end) == 0) {
122 13 return false;
123 }
124
125
2/2
✓ Branch 1 taken 26 times.
✓ Branch 2 taken 511 times.
 537 if (*begin == '-') {
126 // minus is allowed as the first character!
127 26 filtered_output->push_back('-');
128 26 begin++;
129 }
130
131 537 return InputSanitizer::Sanitize(begin, end, filtered_output);
132 }
133
134
135 130 bool PositiveIntegerSanitizer::Sanitize(std::string::const_iterator begin,
136 std::string::const_iterator end,
137 std::string *filtered_output) const {
138
2/2
✓ Branch 1 taken 13 times.
✓ Branch 2 taken 117 times.
 130 if (std::distance(begin, end) == 0) {
139 13 return false;
140 }
141
142 117 return InputSanitizer::Sanitize(begin, end, filtered_output);
143 }
144
145 } // namespace sanitizer
146
147 #ifdef CVMFS_NAMESPACE_GUARD
148 } // namespace CVMFS_NAMESPACE_GUARD
149 #endif
150