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core: use NMStrBuf in nm_utils_stable_id_parse()

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Thomas Haller 2023-04-18 14:10:01 +02:00
parent 21cf2dc58f
commit 7deea767d3
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GPG key ID: 29C2366E4DFC5728
1 changed files with 24 additions and 27 deletions
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51
src/core/nm-core-utils.c
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@ -3360,7 +3360,7 @@ nm_utils_stable_id_generated_complete(const char *stable_id_generated)
}
static void
_stable_id_append(GString *str, const char *substitution)
_stable_id_append(NMStrBuf *str, const char *substitution)
{
if (!substitution) {
/* Would have been nicer to append "=NIL;" to differentiate between
@ -3369,7 +3369,7 @@ _stable_id_append(GString *str, const char *substitution)
* Can't do that now, as it would change behavior. */
substitution = "";
}
g_string_append_printf(str, "=%zu{%s}", strlen(substitution), substitution);
nm_str_buf_append_printf(str, "=%zu{%s}", strlen(substitution), substitution);
}
NMUtilsStableType
@ -3380,8 +3380,9 @@ nm_utils_stable_id_parse(const char *stable_id,
const char *uuid,
char **out_generated)
{
gsize i, idx_start;
GString *str = NULL;
nm_auto_str_buf NMStrBuf str = NM_STR_BUF_INIT_A(NM_UTILS_GET_NEXT_REALLOC_SIZE_232, FALSE);
gsize i;
gsize idx_start;
g_return_val_if_fail(out_generated, NM_UTILS_STABLE_TYPE_RANDOM);
@ -3405,7 +3406,7 @@ nm_utils_stable_id_parse(const char *stable_id,
* In contrast however, the process is unambiguous so that the resulting
* effective id differs if:
* - the original, untranslated stable-id differs
* - or any of the subsitutions differs.
* - or any of the substitution differs.
*
* The reason for that is, for example if you specify "${CONNECTION}" in the
* stable-id, then the resulting ID should be always(!) unique for this connection.
@ -3442,28 +3443,26 @@ nm_utils_stable_id_parse(const char *stable_id,
continue;
}
#define CHECK_PREFIX(prefix) \
({ \
gboolean _match = FALSE; \
\
if (NM_STR_HAS_PREFIX(&stable_id[i], "" prefix "")) { \
_match = TRUE; \
if (!str) \
str = g_string_sized_new(256); \
i += NM_STRLEN(prefix); \
g_string_append_len(str, &(stable_id)[idx_start], i - idx_start); \
idx_start = i; \
} \
_match; \
#define CHECK_PREFIX(prefix) \
({ \
gboolean _match = FALSE; \
\
if (NM_STR_HAS_PREFIX(&stable_id[i], "" prefix "")) { \
_match = TRUE; \
i += NM_STRLEN(prefix); \
nm_str_buf_append_len(&str, &(stable_id)[idx_start], i - idx_start); \
idx_start = i; \
} \
_match; \
})
if (CHECK_PREFIX("${CONNECTION}"))
_stable_id_append(str, uuid);
_stable_id_append(&str, uuid);
else if (CHECK_PREFIX("${BOOT}"))
_stable_id_append(str, bootid);
_stable_id_append(&str, bootid);
else if (CHECK_PREFIX("${DEVICE}"))
_stable_id_append(str, deviceid);
_stable_id_append(&str, deviceid);
else if (CHECK_PREFIX("${MAC}"))
_stable_id_append(str, hwaddr);
_stable_id_append(&str, hwaddr);
else if (g_str_has_prefix(&stable_id[i], "${RANDOM}")) {
/* RANDOM makes not so much sense for cloned-mac-address
* as the result is similar to specifying "cloned-mac-address=random".
@ -3476,8 +3475,6 @@ nm_utils_stable_id_parse(const char *stable_id,
* by toggling only the stable-id property of the connection.
* With RANDOM being the most short-lived, ~non-stable~ variant.
*/
if (str)
g_string_free(str, TRUE);
*out_generated = NULL;
return NM_UTILS_STABLE_TYPE_RANDOM;
} else {
@ -3496,14 +3493,14 @@ nm_utils_stable_id_parse(const char *stable_id,
}
#undef CHECK_PREFIX
if (!str) {
if (str.len == 0) {
*out_generated = NULL;
return NM_UTILS_STABLE_TYPE_STABLE_ID;
}
if (idx_start < i)
g_string_append_len(str, &stable_id[idx_start], i - idx_start);
*out_generated = g_string_free(str, FALSE);
nm_str_buf_append_len(&str, &stable_id[idx_start], i - idx_start);
*out_generated = nm_str_buf_finalize(&str, NULL);
return NM_UTILS_STABLE_TYPE_GENERATED;
}