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Merged
petrisorcoderabbit
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coderabbitai:main
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ESS-ENN:null-function-library-c/cpp
Oct 21, 2024
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,187 @@ | ||
| id: null-library-function-c | ||
| language: C | ||
| severity: warning | ||
| message: >- | ||
| The `$SOURCE` function returns NULL on error and this line dereferences | ||
| the return value without checking for NULL. | ||
| note: >- | ||
| [CWE-476] NULL Pointer Dereference. | ||
| [REFERENCES] | ||
| - https://wiki.sei.cmu.edu/confluence/display/c/EXP34-C.+Do+not+dereference+null+pointers | ||
| utils: | ||
| MATCH_PATTERN_ONE: | ||
| kind: return_statement | ||
| has: | ||
| stopBy: neighbor | ||
| kind: field_expression | ||
| has: | ||
| stopBy: neighbor | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^fgets|::fgets|std::fgets|fopen|::fopen|std::fopen|getenv|::getenv|std::getenv|getgrent|::getgrent|std::getgrent|getgrgid|::getgrgid|std::getgrgid|getgrnam|::getgrnam|std::getgrnam|getlogin|::getlogin|std::getlogin|getpwent|::getpwent|std::getpwent|getpwnam|::getpwnam|std::getpwnam|getpwuid|::getpwuid|std::getpwuid|getpwuuid|::getpwuuid|std::getpwuuid|gets|::gets|std::gets|inet_ntop|::inet_ntop|std::inet_ntop|realpath|::realpath|std::realpath|tempnam|::tempnam|std::tempnam|tmpfile|::tmpfile|std::tmpfile|tmpnam|::tmpnam|std::tmpnam|memchr|::memchr|std::memchr|strcasestr_l|::strcasestr_l|std::strcasestr_l|strcasestr|::strcasestr|std::strcasestr|strchr|::strchr|std::strchr|strnstr|::strnstr|std::strnstr|strpbrk|::strpbrk|std::strpbrk|strrchr|::strrchr|std::strrchr|strstr|::strstr|std::strstr|strtok_r|::strtok_r|std::strtok_r|strtok|::strtok|std::strtok$" | ||
|
|
||
| MATCH_PATTERN_THREE: | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^atof|::atof|std::atof|atoi|::atoi|std::atoi|atol_l|::atol_l|std::atol_l|atol|::atol|std::atol|atoll_l|::atoll_l|std::atoll_l|atoll|::atoll|std::atoll|getc|::getc|std::getc|fprintf|::fprintf|std::fprintf|fgetpos|::fgetpos|std::fgetpos|fseek|::fseek|std::fseek|fseeko|::fseeko|std::fseeko|fsetpos|::fsetpos|std::fsetpos|ftell|::ftell|std::ftell|ftello|::ftello|std::ftello|rewind|::rewind|std::rewind|strlen|::strlen|std::strlen|strtoimax|::strtoimax|std::strtoimax|strtod|::strtod|std::strtod|strtol|::strtol|std::strtol|strtoul|::strtoul|std::strtoul|strtoll|::strtoll|std::strtoll|strtoq|::strtoq|std::strtoq$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
| has: | ||
| stopBy: neighbor | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^fgets|::fgets|std::fgets|fopen|::fopen|std::fopen|getenv|::getenv|std::getenv|getgrent|::getgrent|std::getgrent|getgrgid|::getgrgid|std::getgrgid|getgrnam|::getgrnam|std::getgrnam|getlogin|::getlogin|std::getlogin|getpwent|::getpwent|std::getpwent|getpwnam|::getpwnam|std::getpwnam|getpwuid|::getpwuid|std::getpwuid|getpwuuid|::getpwuuid|std::getpwuuid|gets|::gets|std::gets|inet_ntop|::inet_ntop|std::inet_ntop|realpath|::realpath|std::realpath|tempnam|::tempnam|std::tempnam|tmpfile|::tmpfile|std::tmpfile|tmpnam|::tmpnam|std::tmpnam|memchr|::memchr|std::memchr|strcasestr_l|::strcasestr_l|std::strcasestr_l|strcasestr|::strcasestr|std::strcasestr|strchr|::strchr|std::strchr|strnstr|::strnstr|std::strnstr|strpbrk|::strpbrk|std::strpbrk|strrchr|::strrchr|std::strrchr|strstr|::strstr|std::strstr|strtok_r|::strtok_r|std::strtok_r|strtok|::strtok|std::strtok$" | ||
| - has: | ||
| stopBy: end | ||
| kind: argument_list | ||
|
|
||
| MATCH_PATTERN_FOUR: | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^atof|::atof|std::atof|atoi|::atoi|std::atoi|atol_l|::atol_l|std::atol_l|atol|::atol|std::atol|atoll_l|::atoll_l|std::atoll_l|atoll|::atoll|std::atoll|getc|::getc|std::getc|fprintf|::fprintf|std::fprintf|fgetpos|::fgetpos|std::fgetpos|fseek|::fseek|std::fseek|fseeko|::fseeko|std::fseeko|fsetpos|::fsetpos|std::fsetpos|ftell|::ftell|std::ftell|ftello|::ftello|std::ftello|rewind|::rewind|std::rewind|strlen|::strlen|std::strlen|strtoimax|::strtoimax|std::strtoimax|strtod|::strtod|std::strtod|strtol|::strtol|std::strtol|strtoul|::strtoul|std::strtoul|strtoll|::strtoll|std::strtoll|strtoq|::strtoq|std::strtoq$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
| has: | ||
| stopBy: neighbor | ||
| kind: assignment_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| - has: | ||
| stopBy: neighbor | ||
| regex: "=" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^fgets|::fgets|std::fgets|fopen|::fopen|std::fopen|getenv|::getenv|std::getenv|getgrent|::getgrent|std::getgrent|getgrgid|::getgrgid|std::getgrgid|getgrnam|::getgrnam|std::getgrnam|getlogin|::getlogin|std::getlogin|getpwent|::getpwent|std::getpwent|getpwnam|::getpwnam|std::getpwnam|getpwuid|::getpwuid|std::getpwuid|getpwuuid|::getpwuuid|std::getpwuuid|gets|::gets|std::gets|inet_ntop|::inet_ntop|std::inet_ntop|realpath|::realpath|std::realpath|tempnam|::tempnam|std::tempnam|tmpfile|::tmpfile|std::tmpfile|tmpnam|::tmpnam|std::tmpnam|memchr|::memchr|std::memchr|strcasestr_l|::strcasestr_l|std::strcasestr_l|strcasestr|::strcasestr|std::strcasestr|strchr|::strchr|std::strchr|strnstr|::strnstr|std::strnstr|strpbrk|::strpbrk|std::strpbrk|strrchr|::strrchr|std::strrchr|strstr|::strstr|std::strstr|strtok_r|::strtok_r|std::strtok_r|strtok|::strtok|std::strtok$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
ESS-ENN marked this conversation as resolved.
Show resolved
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|
||
|
|
||
| MATCH_PATTERN_FIVE: | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^bcopy|::bcopy|std::bcopy|memccpy|::memccpy|std::memccpy|memcpy|::memcpy|std::memcpy|memmove|::memmove|std::memmove|stpncpy|::stpncpy|std::stpncpy|strcat|::strcat|std::strcat|strcpy|::strcpy|std::strcpy|strcpy|::strcpy|std::strcpy|strlcat|::strlcat|std::strlcat|strlcpy|::strlcpy|std::strlcpy|strncat|::strncat|std::strncat|strpcpy|::strpcpy|std::strpcpy|wcpcpy|::wcpcpy|std::wcpcpy|wcpncpy|::wcpncpy|std::wcpncpy$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| pattern: $$$ | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^fgets|::fgets|std::fgets|fopen|::fopen|std::fopen|getenv|::getenv|std::getenv|getgrent|::getgrent|std::getgrent|getgrgid|::getgrgid|std::getgrgid|getgrnam|::getgrnam|std::getgrnam|getlogin|::getlogin|std::getlogin|getpwent|::getpwent|std::getpwent|getpwnam|::getpwnam|std::getpwnam|getpwuid|::getpwuid|std::getpwuid|getpwuuid|::getpwuuid|std::getpwuuid|gets|::gets|std::gets|inet_ntop|::inet_ntop|std::inet_ntop|realpath|::realpath|std::realpath|tempnam|::tempnam|std::tempnam|tmpfile|::tmpfile|std::tmpfile|tmpnam|::tmpnam|std::tmpnam|memchr|::memchr|std::memchr|strcasestr_l|::strcasestr_l|std::strcasestr_l|strcasestr|::strcasestr|std::strcasestr|strchr|::strchr|std::strchr|strnstr|::strnstr|std::strnstr|strpbrk|::strpbrk|std::strpbrk|strrchr|::strrchr|std::strrchr|strstr|::strstr|std::strstr|strtok_r|::strtok_r|std::strtok_r|strtok|::strtok|std::strtok$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
| has: | ||
| stopBy: neighbor | ||
| pattern: $$$ | ||
ESS-ENN marked this conversation as resolved.
Show resolved
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|
||
|
|
||
| MATCH_PATTERN_SIX: | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^fwrite|::fwrite|std::fwrite$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
| has: | ||
| stopBy: end | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^fgets|::fgets|std::fgets|fopen|::fopen|std::fopen|getenv|::getenv|std::getenv|getgrent|::getgrent|std::getgrent|getgrgid|::getgrgid|std::getgrgid|getgrnam|::getgrnam|std::getgrnam|getlogin|::getlogin|std::getlogin|getpwent|::getpwent|std::getpwent|getpwnam|::getpwnam|std::getpwnam|getpwuid|::getpwuid|std::getpwuid|getpwuuid|::getpwuuid|std::getpwuuid|gets|::gets|std::gets|inet_ntop|::inet_ntop|std::inet_ntop|realpath|::realpath|std::realpath|tempnam|::tempnam|std::tempnam|tmpfile|::tmpfile|std::tmpfile|tmpnam|::tmpnam|std::tmpnam|memchr|::memchr|std::memchr|strcasestr_l|::strcasestr_l|std::strcasestr_l|strcasestr|::strcasestr|std::strcasestr|strchr|::strchr|std::strchr|strnstr|::strnstr|std::strnstr|strpbrk|::strpbrk|std::strpbrk|strrchr|::strrchr|std::strrchr|strstr|::strstr|std::strstr|strtok_r|::strtok_r|std::strtok_r|strtok|::strtok|std::strtok$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
|
|
||
ESS-ENN marked this conversation as resolved.
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|
||
| MATCH_PATTERN_TWO: | ||
| kind: subscript_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: parenthesized_expression | ||
| has: | ||
| stopBy: neighbor | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^fgets|::fgets|std::fgets|fopen|::fopen|std::fopen|getenv|::getenv|std::getenv|getgrent|::getgrent|std::getgrent|getgrgid|::getgrgid|std::getgrgid|getgrnam|::getgrnam|std::getgrnam|getlogin|::getlogin|std::getlogin|getpwent|::getpwent|std::getpwent|getpwnam|::getpwnam|std::getpwnam|getpwuid|::getpwuid|std::getpwuid|getpwuuid|::getpwuuid|std::getpwuuid|gets|::gets|std::gets|inet_ntop|::inet_ntop|std::inet_ntop|realpath|::realpath|std::realpath|tempnam|::tempnam|std::tempnam|tmpfile|::tmpfile|std::tmpfile|tmpnam|::tmpnam|std::tmpnam|memchr|::memchr|std::memchr|strcasestr_l|::strcasestr_l|std::strcasestr_l|strcasestr|::strcasestr|std::strcasestr|strchr|::strchr|std::strchr|strnstr|::strnstr|std::strnstr|strpbrk|::strpbrk|std::strpbrk|strrchr|::strrchr|std::strrchr|strstr|::strstr|std::strstr|strtok_r|::strtok_r|std::strtok_r|strtok|::strtok|std::strtok$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
| has: | ||
| stopBy: neighbor | ||
| pattern: $$$ | ||
| - has: | ||
| stopBy: neighbor | ||
| pattern: $$$ | ||
|
|
||
| MATCH_PATTERN_SEVEN: | ||
| kind: subscript_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: call_expression | ||
| all: | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: identifier | ||
| regex: "^fgets|::fgets|std::fgets|fopen|::fopen|std::fopen|getenv|::getenv|std::getenv|getgrent|::getgrent|std::getgrent|getgrgid|::getgrgid|std::getgrgid|getgrnam|::getgrnam|std::getgrnam|getlogin|::getlogin|std::getlogin|getpwent|::getpwent|std::getpwent|getpwnam|::getpwnam|std::getpwnam|getpwuid|::getpwuid|std::getpwuid|getpwuuid|::getpwuuid|std::getpwuuid|gets|::gets|std::gets|inet_ntop|::inet_ntop|std::inet_ntop|realpath|::realpath|std::realpath|tempnam|::tempnam|std::tempnam|tmpfile|::tmpfile|std::tmpfile|tmpnam|::tmpnam|std::tmpnam|memchr|::memchr|std::memchr|strcasestr_l|::strcasestr_l|std::strcasestr_l|strcasestr|::strcasestr|std::strcasestr|strchr|::strchr|std::strchr|strnstr|::strnstr|std::strnstr|strpbrk|::strpbrk|std::strpbrk|strrchr|::strrchr|std::strrchr|strstr|::strstr|std::strstr|strtok_r|::strtok_r|std::strtok_r|strtok|::strtok|std::strtok$" | ||
| - has: | ||
| stopBy: neighbor | ||
| kind: argument_list | ||
| - has: | ||
| stopBy: neighbor | ||
| pattern: $$$ | ||
ESS-ENN marked this conversation as resolved.
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| rule: | ||
| any: | ||
| - kind: return_statement | ||
| any: | ||
| - matches: MATCH_PATTERN_ONE | ||
| - kind: call_expression | ||
| any: | ||
| - matches: MATCH_PATTERN_THREE | ||
| - matches: MATCH_PATTERN_FOUR | ||
| - matches: MATCH_PATTERN_FIVE | ||
| - matches: MATCH_PATTERN_SIX | ||
| - kind: subscript_expression | ||
| any: | ||
| - matches: MATCH_PATTERN_TWO | ||
| - matches: MATCH_PATTERN_SEVEN | ||
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