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Code Issues Releases Wiki Activity

checksrc: Add LoadLibrary to the banned functions list

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LoadLibrary was supplanted by Curl_load_library for security
reasons in 6df916d.
This commit is contained in:
Jay Satiro 2016-06-05 21:07:03 -04:00
parent 1aa899ff38
commit 84a48e5732
2 changed files with 11 additions and 2 deletions
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8
lib/checksrc.pl
View File

@ -421,7 +421,13 @@ sub scanfile {
}
# scan for use of banned functions
if($l =~ /^(.*\W)(sprintf|vsprintf|strcat|strncat|_mbscat|_mbsncat|_tcscat|_tcsncat|wcscat|wcsncat|gets)\s*\(/) {
if($l =~ /^(.*\W)
(gets|
v?sprintf|
(str|_mbs|_tcs|_wcs)n?cat|
LoadLibrary(Ex)?(A|W)?)
\s*\(
/x) {
checkwarn("BANNEDFUNC",
$line, length($1), $file, $ol,
"use of $2 is banned");

5
lib/system_win32.c
View File

@ -249,10 +249,12 @@ HMODULE Curl_load_library(LPCTSTR filename)
there is. Note: Both back slashes and forward slashes have been supported
since the earlier days of DOS at an API level although they are not
supported by command prompt */
if(_tcspbrk(filename, TEXT("\\/")))
if(_tcspbrk(filename, TEXT("\\/"))) {
/** !checksrc! disable BANNEDFUNC 1 **/
hModule = pLoadLibraryEx ?
pLoadLibraryEx(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH) :
LoadLibrary(filename);
}
/* Detect if KB2533623 is installed, as LOAD_LIBARY_SEARCH_SYSTEM32 is only
supported on Windows Vista, Windows Server 2008, Windows 7 and Windows
Server 2008 R2 with this patch or natively on Windows 8 and above */
@ -274,6 +276,7 @@ HMODULE Curl_load_library(LPCTSTR filename)
_tcscpy(path + _tcslen(path), filename);
/* Load the DLL from the Windows system directory */
/** !checksrc! disable BANNEDFUNC 1 **/
hModule = pLoadLibraryEx ?
pLoadLibraryEx(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH) :
LoadLibrary(path);