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alsa: be safer when parsing device string

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This commit is contained in:
Wim Taymans 2020-07-28 12:51:11 +02:00
parent 154f981f97
commit e478ba7e34
1 changed files with 5 additions and 2 deletions
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7
spa/plugins/alsa/alsa-acp-device.c
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@ -821,10 +821,13 @@ impl_init(const struct spa_handle_factory *factory,
reset_props(&this->props); reset_props(&this->props);
if (info && (str = spa_dict_lookup(info, SPA_KEY_API_ALSA_PATH))) if (info && (str = spa_dict_lookup(info, SPA_KEY_API_ALSA_PATH)))
snprintf(this->props.device, 64, "%s", str); snprintf(this->props.device, sizeof(this->props.device)-1, "%s", str);
spa_log_debug(this->log, "probe card %s", this->props.device); spa_log_debug(this->log, "probe card %s", this->props.device);
this->card = acp_card_new(atoi(this->props.device+3), NULL); if ((str = strchr(this->props.device, ':')) == NULL)
return -EINVAL;
this->card = acp_card_new(atoi(str+1), NULL);
if (this->card == NULL) if (this->card == NULL)
return -errno; return -errno;