From f9d7e5829c714fb0de1912089d320e036972c6ec Mon Sep 17 00:00:00 2001
From: zlago
Date: Thu, 31 Jul 2025 19:59:46 +0200
Subject: add bounds checking to organya modules

---
 src/portaudio.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src/portaudio.c')

diff --git a/src/portaudio.c b/src/portaudio.c
index 7ff6ca3..e5c5d92 100644
--- a/src/portaudio.c
+++ b/src/portaudio.c
@@ -36,6 +36,22 @@ int audio_callback(void const *inBuf, void *outBuf, unsigned long const frameCou
 
 int (*file_ext(char *file))(struct blob *, struct userdata *);
 
+#include <alsa/asoundlib.h>
+#include <stdarg.h>
+static void alsa_shut_up(char const *file, int line, char const *function, int err, char const *fmt, ...) {
+	if (err == 0) {
+		// duckGPT claims its not unsafe to return before using va_ functions
+		return;
+	}
+	// ALSA lib (real)
+	fprintf(stderr, "ALSA lib %s:%i:(%s) ", file, line, function);
+	va_list list;
+	va_start(list, fmt);
+	vfprintf(stderr, fmt, list);
+	va_end(list);
+	putc('\n', stderr);
+}
+
 int main(int argc, char **argv) {
 	if (argc != 2) {
 		eprintf("usage: %s audio-file.{mid,mod,xm,it,s3m}\n", argv[0]);
@@ -59,11 +75,13 @@ int main(int argc, char **argv) {
 	
 	signal(SIGINT, sigint_handler); // signal(3) claims this method is deprecated, but..
 	
+	snd_lib_error_set_handler(alsa_shut_up);
 	PaError paErr;
 	if ((paErr = Pa_Initialize()) != paNoError) {
 		printf("error: Pa_Initialize: %s\n", Pa_GetErrorText(paErr));
 		goto error;
 	}
+	snd_lib_error_set_handler(NULL);
 	
 	PaStream *stream;
 	if ((paErr = Pa_OpenDefaultStream(
-- 
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