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Add ossl_is_absolute_path function to detect absolute paths

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Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13306)
This commit is contained in:
Tomas Mraz 2020-11-03 18:34:16 +01:00
parent 69d16b70cf
commit 368d9e030f
2 changed files with 27 additions and 4 deletions
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15
doc/internal/man3/ossl_ends_with_dirsep.pod
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@ -2,8 +2,8 @@
=head1 NAME =head1 NAME
ossl_ends_with_dirsep - internal function to detect whether a path ossl_ends_with_dirsep, ossl_is_absolute_path
ends with directory separator - internal functions to work with paths
=head1 SYNOPSIS =head1 SYNOPSIS
@ -11,19 +11,26 @@ ends with directory separator
int ossl_ends_with_dirsep(const char *path); int ossl_ends_with_dirsep(const char *path);
int ossl_is_absolute_path(const char *path);
=head1 DESCRIPTION =head1 DESCRIPTION
ossl_ends_with_dirsep() detects whether the I<path> ends with a directory ossl_ends_with_dirsep() detects whether the I<path> ends with a directory
separator in platform agnostic way. separator in a platform agnostic way.
ossl_is_absolute_path() detects whether the I<path> is absolute path in
a platform agnostic way.
=head1 RETURN VALUES =head1 RETURN VALUES
ossl_ends_with_dirsep() returns 1 if the I<path> ends with a directory ossl_ends_with_dirsep() returns 1 if the I<path> ends with a directory
separator, 0 otherwise. separator, 0 otherwise.
ossl_is_absolute_path() returns 1 if the I<path> is absolute, 0 otherwise.
=head1 HISTORY =head1 HISTORY
The function described here was added in OpenSSL 3.0. The functions described here were added in OpenSSL 3.0.
=head1 COPYRIGHT =head1 COPYRIGHT

16
include/internal/cryptlib.h
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@ -267,4 +267,20 @@ static ossl_inline int ossl_ends_with_dirsep(const char *path)
return *path == '/'; return *path == '/';
} }
static ossl_inline int ossl_is_absolute_path(const char *path)
{
# if defined __VMS
if (strchr(path, ':') != NULL
|| ((path[0] == '[' || path[0] == '<')
&& path[1] != '.' && path[1] != '-'
&& path[1] != ']' && path[1] != '>'))
return 1;
# elif defined _WIN32
if (path[0] == '\\'
|| (path[0] != '\0' && path[1] == ':'))
return 1;
# endif
return path[0] == '/';
}
#endif #endif