mirror of
https://github.com/systemd/systemd.git
synced 2024-11-05 15:21:37 +03:00
55 lines
1.9 KiB
Plaintext
55 lines
1.9 KiB
Plaintext
/**
|
|
* @name Use of potentially dangerous function
|
|
* @description Certain standard library functions are dangerous to call.
|
|
* @kind problem
|
|
* @problem.severity error
|
|
* @precision high
|
|
* @id cpp/potentially-dangerous-function
|
|
* @tags reliability
|
|
* security
|
|
*
|
|
* Borrowed from
|
|
* https://github.com/Semmle/ql/blob/master/cpp/ql/src/Security/CWE/CWE-676/PotentiallyDangerousFunction.ql
|
|
*/
|
|
import cpp
|
|
|
|
predicate potentiallyDangerousFunction(Function f, string message) {
|
|
(
|
|
f.getQualifiedName() = "fgets" and
|
|
message = "Call to fgets() is potentially dangerous. Use read_line() instead."
|
|
) or (
|
|
f.getQualifiedName() = "strtok" and
|
|
message = "Call to strtok() is potentially dangerous. Use extract_first_word() instead."
|
|
) or (
|
|
f.getQualifiedName() = "strsep" and
|
|
message = "Call to strsep() is potentially dangerous. Use extract_first_word() instead."
|
|
) or (
|
|
f.getQualifiedName() = "dup" and
|
|
message = "Call to dup() is potentially dangerous. Use fcntl(fd, FD_DUPFD_CLOEXEC, 3) instead."
|
|
) or (
|
|
f.getQualifiedName() = "htonl" and
|
|
message = "Call to htonl() is confusing. Use htobe32() instead."
|
|
) or (
|
|
f.getQualifiedName() = "htons" and
|
|
message = "Call to htons() is confusing. Use htobe16() instead."
|
|
) or (
|
|
f.getQualifiedName() = "ntohl" and
|
|
message = "Call to ntohl() is confusing. Use be32toh() instead."
|
|
) or (
|
|
f.getQualifiedName() = "ntohs" and
|
|
message = "Call to ntohs() is confusing. Use be16toh() instead."
|
|
) or (
|
|
f.getQualifiedName() = "strerror" and
|
|
message = "Call to strerror() is not thread-safe. Use strerror_r() or printf()'s %m format string instead."
|
|
) or (
|
|
f.getQualifiedName() = "accept" and
|
|
message = "Call to accept() is not O_CLOEXEC-safe. Use accept4() instead."
|
|
)
|
|
}
|
|
|
|
from FunctionCall call, Function target, string message
|
|
where
|
|
call.getTarget() = target and
|
|
potentiallyDangerousFunction(target, message)
|
|
select call, message
|