GCC Code Coverage Report

Directory: cvmfs/
File: cvmfs/sanitizer.cc
Date: 2026-11-08 02:41:18
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 19693 CharRange::CharRange(const char range_begin, const char range_end) {
21 19693 range_begin_ = range_begin;
22 19693 range_end_ = range_end;
23 19693 }
24
25
26 17630 CharRange::CharRange(const char single_char) {
27 17630 range_begin_ = range_end_ = single_char;
28 17630 }
29
30
31 229687 bool CharRange::InRange(const char c) const {
32
4/4
✓ Branch 0 taken 189139 times.
✓ Branch 1 taken 40548 times.
✓ Branch 2 taken 125587 times.
✓ Branch 3 taken 63552 times.
 229687 return (c >= range_begin_) && (c <= range_end_);
33 }
34
35
36 //------------------------------------------------------------------------------
37
38
39 17428 InputSanitizer::InputSanitizer(const string &whitelist) : max_length_(-1) {
40
1/2
✓ Branch 1 taken 17428 times.
✗ Branch 2 not taken.
 17428 InitValidRanges(whitelist);
41 17428 }
42
43
44 63 InputSanitizer::InputSanitizer(const string &whitelist, int max_length)
45 63 : max_length_(max_length) {
46
1/2
✓ Branch 1 taken 63 times.
✗ Branch 2 not taken.
 63 InitValidRanges(whitelist);
47 63 }
48
49
50 17491 void InputSanitizer::InitValidRanges(const std::string &whitelist) {
51 // Parse the whitelist
52 17491 const unsigned length = whitelist.length();
53 17491 unsigned pickup_pos = 0;
54
2/2
✓ Branch 0 taken 57016 times.
✓ Branch 1 taken 17491 times.
 74507 for (unsigned i = 0; i < length; ++i) {
55
7/8
✓ Branch 0 taken 39531 times.
✓ Branch 1 taken 17485 times.
✓ Branch 3 taken 19693 times.
✓ Branch 4 taken 19838 times.
✗ Branch 5 not taken.
✓ Branch 6 taken 19693 times.
✓ Branch 7 taken 37323 times.
✓ Branch 8 taken 19693 times.
 57016 if ((i + 1 >= length) || (whitelist[i + 1] == ' ') || (i == length - 1)) {
56
1/2
✓ Branch 1 taken 37323 times.
✗ Branch 2 not taken.
 37323 const string range = whitelist.substr(pickup_pos, i - pickup_pos + 1);
57
2/3
✓ Branch 1 taken 17630 times.
✓ Branch 2 taken 19693 times.
✗ Branch 3 not taken.
 37323 switch (range.length()) {
58 17630 case 1:
59
1/2
✓ Branch 3 taken 17630 times.
✗ Branch 4 not taken.
 17630 valid_ranges_.push_back(CharRange(range[0]));
60 17630 break;
61 19693 case 2:
62
1/2
✓ Branch 4 taken 19693 times.
✗ Branch 5 not taken.
 19693 valid_ranges_.push_back(CharRange(range[0], range[1]));
63 19693 break;
64 ✗ default:
65 ✗ assert(false);
66 }
67 37323 ++i;
68 37323 pickup_pos = i + 1;
69 37323 }
70 }
71 17491 }
72
73
74 17989 bool InputSanitizer::Sanitize(std::string::const_iterator begin,
75 std::string::const_iterator end,
76 std::string *filtered_output) const {
77 17989 int pos = 0;
78 17989 bool is_sane = true;
79
2/2
✓ Branch 2 taken 155746 times.
✓ Branch 3 taken 17965 times.
 173711 for (; begin != end; ++begin) {
80
2/2
✓ Branch 2 taken 125587 times.
✓ Branch 3 taken 30159 times.
 155746 if (CheckRanges(*begin)) {
81
4/4
✓ Branch 0 taken 657 times.
✓ Branch 1 taken 124930 times.
✓ Branch 2 taken 24 times.
✓ Branch 3 taken 633 times.
 125587 if ((max_length_ >= 0) && (pos >= max_length_)) {
82 24 is_sane = false;
83 24 break;
84 }
85 125563 filtered_output->push_back(*begin);
86 125563 pos++;
87 } else {
88 30159 is_sane = false;
89 }
90 }
91 17989 return is_sane;
92 }
93
94
95 155746 bool InputSanitizer::CheckRanges(const char chr) const {
96
2/2
✓ Branch 1 taken 229687 times.
✓ Branch 2 taken 30159 times.
 259846 for (unsigned j = 0; j < valid_ranges_.size(); ++j) {
97
2/2
✓ Branch 2 taken 125587 times.
✓ Branch 3 taken 104100 times.
 229687 if (valid_ranges_[j].InRange(chr)) {
98 125587 return true;
99 }
100 }
101 30159 return false;
102 }
103
104
105 228 string InputSanitizer::Filter(const std::string &input) const {
106 228 string filtered_output;
107
1/2
✓ Branch 1 taken 228 times.
✗ Branch 2 not taken.
 228 Sanitize(input, &filtered_output);
108 228 return filtered_output;
109 }
110
111
112 17773 bool InputSanitizer::IsValid(const std::string &input) const {
113 17773 string dummy;
114
1/2
✓ Branch 1 taken 17773 times.
✗ Branch 2 not taken.
 35546 return Sanitize(input, &dummy);
115 17773 }
116
117
118 420 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 6 times.
✓ Branch 2 taken 414 times.
 420 if (std::distance(begin, end) == 0) {
122 6 return false;
123 }
124
125
2/2
✓ Branch 1 taken 12 times.
✓ Branch 2 taken 402 times.
 414 if (*begin == '-') {
126 // minus is allowed as the first character!
127 12 filtered_output->push_back('-');
128 12 begin++;
129 }
130
131 414 return InputSanitizer::Sanitize(begin, end, filtered_output);
132 }
133
134
135 60 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 6 times.
✓ Branch 2 taken 54 times.
 60 if (std::distance(begin, end) == 0) {
139 6 return false;
140 }
141
142 54 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