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avb: use safer strbuf to construct strings

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This commit is contained in:
Wim Taymans 2026-05-06 13:09:03 +02:00
parent 8276d615ba
commit b66614063d
1 changed files with 15 additions and 20 deletions
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35
spa/plugins/avb/avb-pcm.c
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@ -89,36 +89,31 @@ static int avb_set_param(struct state *state, const char *k, const char *s)
static int position_to_string(struct channel_map *map, char *val, size_t len)
{
uint32_t i, o = 0;
int r;
uint32_t i;
char pos[8];
o += snprintf(val, len, "[ ");
struct spa_strbuf b;
spa_strbuf_init(&b, val, len);
spa_strbuf_append(&b, "[ ");
for (i = 0; i < map->channels; i++) {
r = snprintf(val+o, len-o, "%s%s", i == 0 ? "" : ", ",
spa_strbuf_append(&b, "%s%s", i == 0 ? "" : ", ",
spa_type_audio_channel_make_short_name(map->pos[i],
pos, sizeof(pos), "UNK"));
if (r < 0 || o + r >= len)
return -ENOSPC;
o += r;
}
if (len > o)
o += snprintf(val+o, len-o, " ]");
spa_strbuf_append(&b, " ]");
return 0;
}
static int uint32_array_to_string(uint32_t *vals, uint32_t n_vals, char *val, size_t len)
{
uint32_t i, o = 0;
int r;
o += snprintf(val, len, "[ ");
for (i = 0; i < n_vals; i++) {
r = snprintf(val+o, len-o, "%s%d", i == 0 ? "" : ", ", vals[i]);
if (r < 0 || o + r >= len)
return -ENOSPC;
o += r;
}
if (len > o)
o += snprintf(val+o, len-o, " ]");
uint32_t i;
struct spa_strbuf b;
spa_strbuf_init(&b, val, len);
spa_strbuf_append(&b, "[ ");
for (i = 0; i < n_vals; i++)
spa_strbuf_append(&b, "%s%d", i == 0 ? "" : ", ", vals[i]);
spa_strbuf_append(&b, " ]");
return 0;
}