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utils: add nm_utils_is_valid_path_component()

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This commit is contained in:
Thomas Haller 2015-08-06 17:06:42 +02:00
parent a4c7176fe9
commit 633deb0a98
2 changed files with 16 additions and 8 deletions
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23
src/NetworkManagerUtils.c
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@ -2721,28 +2721,35 @@ nm_utils_ip4_property_path (const char *ifname, const char *property)
return _get_property_path (ifname, property, FALSE);
}
const char *
ASSERT_VALID_PATH_COMPONENT (const char *name)
gboolean
nm_utils_is_valid_path_component (const char *name)
{
const char *n;
if (name == NULL || name[0] == '\0')
goto fail;
return FALSE;
if (name[0] == '.') {
if (name[1] == '\0')
goto fail;
return FALSE;
if (name[1] == '.' && name[2] == '\0')
goto fail;
return FALSE;
}
n = name;
do {
if (*n == '/')
goto fail;
return FALSE;
} while (*(++n) != '\0');
return name;
fail:
return TRUE;
}
const char *
ASSERT_VALID_PATH_COMPONENT (const char *name)
{
if (G_LIKELY (nm_utils_is_valid_path_component (name)))
return name;
nm_log_err (LOGD_CORE, "Failed asserting path component: %s%s%s",
NM_PRINT_FMT_QUOTED (name, "\"", name, "\"", "(null)"));
g_error ("FATAL: Failed asserting path component: %s%s%s",

1
src/NetworkManagerUtils.h
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@ -186,6 +186,7 @@ gint64 nm_utils_get_monotonic_timestamp_ms (void);
gint32 nm_utils_get_monotonic_timestamp_s (void);
gint64 nm_utils_monotonic_timestamp_as_boottime (gint64 timestamp, gint64 timestamp_ticks_per_ns);
gboolean nm_utils_is_valid_path_component (const char *name);
const char *ASSERT_VALID_PATH_COMPONENT (const char *name);
const char *nm_utils_ip6_property_path (const char *ifname, const char *property);
const char *nm_utils_ip4_property_path (const char *ifname, const char *property);