File librist-const-correctness.patch of Package librist

From 604349088afb7a07c9418803f4c88ab1a3264ec8 Mon Sep 17 00:00:00 2001
From: Sergio Ammirata <sergio@ammirata.net>
Date: Wed, 11 Mar 2026 18:19:37 -0400
Subject: [PATCH] fix: improve const correctness in URL parameter parsing

Change local 'query' pointer variables to const char* in both
parse_url_udp_options() and udpsocket_parse_url_parameters()
to properly reflect that these pointers reference string data
that should not be modified through this alias.

Since strtok() requires a non-const char* argument (it modifies
the string in-place), add an explicit cast when passing to strtok().
This is safe because the underlying buffer (url parameter) is
writable; the const qualifier on query is for local code clarity,
not to indicate truly immutable memory.

This fixes compiler warnings about implicit const conversions
that appear with stricter warning levels.
---
 src/rist-common.c | 2 +-
 src/udpsocket.c   | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/rist-common.c b/src/rist-common.c
index 7e5ba29..c82e451 100755
--- a/src/rist-common.c
+++ b/src/rist-common.c
@@ -45,7 +45,7 @@ void remove_peer_from_flow(struct rist_peer *peer);
 int parse_url_udp_options(const char* url, struct rist_udp_config *output_udp_config)
 {
 	uint32_t clean_url_len = 0;
-	char* query = NULL;
+	const char* query = NULL;
 	uint32_t prefix_len = 0;
 	struct udpsocket_url_param url_params[32];
 	int num_params = 0;
diff --git a/src/udpsocket.c b/src/udpsocket.c
index 80c0a40..d3014d4 100644
--- a/src/udpsocket.c
+++ b/src/udpsocket.c
@@ -381,7 +381,7 @@ int udpsocket_close(int sd)
 int udpsocket_parse_url_parameters(const char *url, udpsocket_url_param_t *params, int max_params,
 	uint32_t *clean_url_len)
 {
-	char* query = NULL;
+	const char* query = NULL;
 	int i = 0;
 	char *token = NULL;
 
@@ -397,7 +397,7 @@ int udpsocket_parse_url_parameters(char *url, udpsocket_url_param_t *params, int
 		return 0;
 
 	const char amp[2] = "&";
-	token = strtok( query + 1, amp );
+	token = strtok( (char*)query + 1, amp );
 	while (token != NULL && i < max_params) {
 		params[i].key = token;
 		params[i].val = NULL;
-- 
2.51.0