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listen_dnsport: check config variables to prevent SegFaults

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This commit is contained in:
Martine S. Lenders 2025-11-25 11:13:58 +01:00
parent ba65f504ba
commit b58f157c36
1 changed files with 11 additions and 8 deletions
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19
services/listen_dnsport.c
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@ -2418,7 +2418,7 @@ static coap_context_t* coap_context_from_cfg(struct config_file *cfg)
char* oscore_conf = NULL;
char* oscore_seq_file = NULL;
if (cfg->coap_oscore_conf) {
if (cfg->coap_oscore_conf && cfg->coap_oscore_seq_file) {
oscore_conf = fname_after_chroot(cfg->coap_oscore_conf, cfg, 1);
if (!oscore_conf) {
@ -2436,16 +2436,19 @@ static coap_context_t* coap_context_from_cfg(struct config_file *cfg)
}
}
coap_context = doc_setup_server_context(
(const uint8_t *)cfg->coaps_psk, strlen(cfg->coaps_psk), cfg->coaps_psk_id,
cfg->ssl_service_key, cfg->ssl_service_pem, NULL,
oscore_conf, oscore_seq_file);
if (cfg->coaps_psk && cfg->coaps_psk_id && cfg->ssl_service_key && cfg->ssl_service_pem) {
coap_context = doc_setup_server_context(
(const uint8_t *)cfg->coaps_psk, strlen(cfg->coaps_psk), cfg->coaps_psk_id,
cfg->ssl_service_key, cfg->ssl_service_pem, NULL,
oscore_conf, oscore_seq_file);
if (!coap_context) {
fatal_exit("Unable to create CoAP server context for DoC.");
}
}
free(oscore_conf);
free(oscore_seq_file);
if (!coap_context) {
fatal_exit("Unable to create CoAP server context for DoC.");
}
return coap_context;
}