This fixes two regressions:
Commit 959f1428 ("color: add new COLOR_NONE and disable_color function")
caused segfault, when running ip with --color switch, as 'attr + 8' in
color_fprintf() access array item out of bounds.
Changing latter value of ternar operator in attr_colors[] index is for
restoring the same colors.
Reproduce the bug with:
$ ip -c a
Commit d0e72011 ("ip: ipaddress.c: add support for json output")
introduced passing -1 as enum color_attr. This is not only wrong as no
color_attr has value -1, but also causes another segfault in color_fprintf()
on this setup as there is no item with index -1 in array of enum attr_colors[].
Using 0 is valid option.
Reproduce the bug with:
$ COLORFGBG='0;15' ip -c a
NOTE: COLORFGBG is environmental variable used for defining whether user
has light or dark background.
COLORFGBG="0;15" is used to ask for color set suitable for light background,
COLORFGBG="15;0" is used to ask for color set suitable for dark background.
Signed-off-by: Petr Vorel <petr.vo...@gmail.com>
---
include/json_print.h | 2 +-
lib/color.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/json_print.h b/include/json_print.h
index b6ce1f9f..2f3f07c8 100644
--- a/include/json_print.h
+++ b/include/json_print.h
@@ -53,7 +53,7 @@ void close_json_array(enum output_type type, const char
*delim);
const char *fmt, \
type value) \
{ \
- print_color_##type_name(t, -1, key, fmt, value); \
+ print_color_##type_name(t, 0, key, fmt, value); \
}
_PRINT_FUNC(int, int);
_PRINT_FUNC(bool, bool);
diff --git a/lib/color.c b/lib/color.c
index 79d5e289..e597798f 100644
--- a/lib/color.c
+++ b/lib/color.c
@@ -110,7 +110,7 @@ int color_fprintf(FILE *fp, enum color_attr attr, const
char *fmt, ...)
}
ret += fprintf(fp, "%s",
- color_codes[attr_colors[is_dark_bg ? attr + 8 : attr]]);
+ color_codes[attr_colors[is_dark_bg ? attr + 6 : attr -
1]]);
ret += vfprintf(fp, fmt, args);
ret += fprintf(fp, "%s", color_codes[C_CLEAR]);
--
2.14.2
