mkdeps: Quote CFLAGS to be safe with the shell #1183
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this fixes #1100 |
mkdeps uses system() thus a shell to execute cc.
it doesn't work if you have something like
CFLAGS += -DMBEDTLS_USER_CONFIG_FILE="<mbedtls/user_config.h>"
because the shell interprets "<" as a redirect.
to fix it, we should do either
* make it shell-quote arguments
* or, stop using system()
this commit implements the former.
some platforms provide easy ways to do the former.
eg. https://netbsd.gw.com/cgi-bin/man-cgi?shquote++NetBSD-current
but unfortunately none of them seems available widely.
i guess the latter approach is more common.
eg. https://github.com/NetBSD/src/blob/4464250282160188d09bef1ac67ec944b9a8a828/usr.bin/mkdep/mkdep.c#L137-L154
but i might be a burden for windows. (i don't know)
tools/mkdeps.c
Outdated
| { | ||
| fprintf(stderr, | ||
| "ERROR: Truncated during shquote string is too long" | ||
| "[%lu/%zu]\n", (unsigned long)strlen(argument), |
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change to:
"[%zu/%zu]\n", strlen(argument), sizeof(g_shquote));
to avoid the cast.
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mkdeps uses system() thus a shell to execute cc.
it doesn't work if you have something like
because the shell interprets "<" as a redirect.
to fix it, we should do either
this commit implements the former.
some platforms provide easy ways to do the former.
eg. https://netbsd.gw.com/cgi-bin/man-cgi?shquote++NetBSD-current
but unfortunately none of them seems available widely.
i guess the latter approach is more common.
eg. https://github.com/NetBSD/src/blob/4464250282160188d09bef1ac67ec944b9a8a828/usr.bin/mkdep/mkdep.c#L137-L154
but i might be a burden for windows. (i don't know)
Summary
Impact
Testing