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pulse-server: use safer spa_scnprintf

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This clamps to the max size of the input buffer so that we don't write
the next item past the allocated space.
This commit is contained in:
Wim Taymans 2021-12-22 21:34:29 +01:00
parent 2905635de3
commit 3de9d3df3b
8 changed files with 11 additions and 11 deletions
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8
src/modules/module-zeroconf-discover.c
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@ -209,12 +209,12 @@ static void pw_properties_from_avahi_string(const char *key, const char *value,
channel_map_parse(value, &channel_map);
channel_map_to_positions(&channel_map, pos);
p = s = alloca(4 + channel_map.channels * 6);
p += snprintf(p, 6, "[");
p = s = alloca(4 + channel_map.channels * 8);
p += spa_scnprintf(p, 2, "[");
for (i = 0; i < channel_map.channels; i++)
p += snprintf(p, 6, "%s%s", i == 0 ? "" : ",",
p += spa_scnprintf(p, 8, "%s%s", i == 0 ? "" : ",",
channel_id2name(pos[i]));
p += snprintf(p, 6, "]");
p += spa_scnprintf(p, 2, "]");
pw_properties_set(props, SPA_KEY_AUDIO_POSITION, s);
}
else if (spa_streq(key, "format")) {