GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/sanitizer.cc
Date: 2026-10-18 02:40:11
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 43045 CharRange::CharRange(const char range_begin, const char range_end) {
21 43045 range_begin_ = range_begin;
22 43045 range_end_ = range_end;
23 43045 }
24
25
26 37751 CharRange::CharRange(const char single_char) {
27 37751 range_begin_ = range_end_ = single_char;
28 37751 }
29
30
31 518087 bool CharRange::InRange(const char c) const {
32
4/4
✓ Branch 0 taken 425055 times.
✓ Branch 1 taken 93032 times.
✓ Branch 2 taken 275952 times.
✓ Branch 3 taken 149103 times.
 518087 return (c >= range_begin_) && (c <= range_end_);
33 }
34
35
36 //------------------------------------------------------------------------------
37
38
39 37416 InputSanitizer::InputSanitizer(const string &whitelist) : max_length_(-1) {
40
1/2
✓ Branch 1 taken 37416 times.
✗ Branch 2 not taken.
 37416 InitValidRanges(whitelist);
41 37416 }
42
43
44 169 InputSanitizer::InputSanitizer(const string &whitelist, int max_length)
45 169 : max_length_(max_length) {
46
1/2
✓ Branch 1 taken 169 times.
✗ Branch 2 not taken.
 169 InitValidRanges(whitelist);
47 169 }
48
49
50 37585 void InputSanitizer::InitValidRanges(const std::string &whitelist) {
51 // Parse the whitelist
52 37585 const unsigned length = whitelist.length();
53 37585 unsigned pickup_pos = 0;
54
2/2
✓ Branch 0 taken 123841 times.
✓ Branch 1 taken 37585 times.
 161426 for (unsigned i = 0; i < length; ++i) {
55
7/8
✓ Branch 0 taken 86288 times.
✓ Branch 1 taken 37553 times.
✓ Branch 3 taken 43045 times.
✓ Branch 4 taken 43243 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 43045 times.
✓ Branch 7 taken 80796 times.
✓ Branch 8 taken 43045 times.
 123841 if ((i + 1 >= length) || (whitelist[i + 1] == ' ') || (i == length - 1)) {
56
1/2
✓ Branch 1 taken 80796 times.
✗ Branch 2 not taken.
 80796 const string range = whitelist.substr(pickup_pos, i - pickup_pos + 1);
57
2/3
✓ Branch 1 taken 37751 times.
✓ Branch 2 taken 43045 times.
✗ Branch 3 not taken.
 80796 switch (range.length()) {
58 37751 case 1:
59
1/2
✓ Branch 3 taken 37751 times.
✗ Branch 4 not taken.
 37751 valid_ranges_.push_back(CharRange(range[0]));
60 37751 break;
61 43045 case 2:
62
1/2
✓ Branch 4 taken 43045 times.
✗ Branch 5 not taken.
 43045 valid_ranges_.push_back(CharRange(range[0], range[1]));
63 43045 break;
64 ✗ default:
65 ✗ assert(false);
66 }
67 80796 ++i;
68 80796 pickup_pos = i + 1;
69 80796 }
70 }
71 37585 }
72
73
74 39250 bool InputSanitizer::Sanitize(std::string::const_iterator begin,
75 std::string::const_iterator end,
76 std::string *filtered_output) const {
77 39250 int pos = 0;
78 39250 bool is_sane = true;
79
2/2
✓ Branch 2 taken 346614 times.
✓ Branch 3 taken 39122 times.
 385736 for (; begin != end; ++begin) {
80
2/2
✓ Branch 2 taken 275952 times.
✓ Branch 3 taken 70662 times.
 346614 if (CheckRanges(*begin)) {
81
4/4
✓ Branch 0 taken 1667 times.
✓ Branch 1 taken 274285 times.
✓ Branch 2 taken 128 times.
✓ Branch 3 taken 1539 times.
 275952 if ((max_length_ >= 0) && (pos >= max_length_)) {
82 128 is_sane = false;
83 128 break;
84 }
85 275824 filtered_output->push_back(*begin);
86 275824 pos++;
87 } else {
88 70662 is_sane = false;
89 }
90 }
91 39250 return is_sane;
92 }
93
94
95 346614 bool InputSanitizer::CheckRanges(const char chr) const {
96
2/2
✓ Branch 1 taken 518087 times.
✓ Branch 2 taken 70662 times.
 588749 for (unsigned j = 0; j < valid_ranges_.size(); ++j) {
97
2/2
✓ Branch 2 taken 275952 times.
✓ Branch 3 taken 242135 times.
 518087 if (valid_ranges_[j].InRange(chr)) {
98 275952 return true;
99 }
100 }
101 70662 return false;
102 }
103
104
105 480 string InputSanitizer::Filter(const std::string &input) const {
106 480 string filtered_output;
107
1/2
✓ Branch 1 taken 480 times.
✗ Branch 2 not taken.
 480 Sanitize(input, &filtered_output);
108 480 return filtered_output;
109 }
110
111
112 38834 bool InputSanitizer::IsValid(const std::string &input) const {
113 38834 string dummy;
114
1/2
✓ Branch 1 taken 38834 times.
✗ Branch 2 not taken.
 77668 return Sanitize(input, &dummy);
115 38834 }
116
117
118 572 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 32 times.
✓ Branch 2 taken 540 times.
 572 if (std::distance(begin, end) == 0) {
122 32 return false;
123 }
124
125
2/2
✓ Branch 1 taken 64 times.
✓ Branch 2 taken 476 times.
 540 if (*begin == '-') {
126 // minus is allowed as the first character!
127 64 filtered_output->push_back('-');
128 64 begin++;
129 }
130
131 540 return InputSanitizer::Sanitize(begin, end, filtered_output);
132 }
133
134
135 320 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 32 times.
✓ Branch 2 taken 288 times.
 320 if (std::distance(begin, end) == 0) {
139 32 return false;
140 }
141
142 288 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