diff options
Diffstat (limited to 'src/systemd/src/basic/escape.h')
| -rw-r--r-- | src/systemd/src/basic/escape.h | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/src/systemd/src/basic/escape.h b/src/systemd/src/basic/escape.h index 24729dc1..e62347af 100644 --- a/src/systemd/src/basic/escape.h +++ b/src/systemd/src/basic/escape.h @@ -33,13 +33,30 @@ /* What characters are special in the shell? */ /* must be escaped outside and inside double-quotes */ #define SHELL_NEED_ESCAPE "\"\\`$" -/* can be escaped or double-quoted */ -#define SHELL_NEED_QUOTES SHELL_NEED_ESCAPE GLOB_CHARS "'()<>|&;" + +/* Those that can be escaped or double-quoted. + * + * Stricly speaking, ! does not need to be escaped, except in interactive + * mode, but let's be extra nice to the user and quote ! in case this + * output is ever used in interactive mode. */ +#define SHELL_NEED_QUOTES SHELL_NEED_ESCAPE GLOB_CHARS "'()<>|&;!" + +/* Note that we assume control characters would need to be escaped too in + * addition to the "special" characters listed here, if they appear in the + * string. Current users disallow control characters. Also '"' shall not + * be escaped. + */ +#define SHELL_NEED_ESCAPE_POSIX "\\\'" typedef enum UnescapeFlags { UNESCAPE_RELAX = 1, } UnescapeFlags; +typedef enum EscapeStyle { + ESCAPE_BACKSLASH = 1, + ESCAPE_POSIX = 2, +} EscapeStyle; + char *cescape(const char *s); char *cescape_length(const char *s, size_t n); size_t cescape_char(char c, char *buf); @@ -53,4 +70,4 @@ char *xescape(const char *s, const char *bad); char *octescape(const char *s, size_t len); char *shell_escape(const char *s, const char *bad); -char *shell_maybe_quote(const char *s); +char* shell_maybe_quote(const char *s, EscapeStyle style); |