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Handle some invalid values. Not an issue now, but if some caller screws up.

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This commit is contained in:
Bram Matthys
2026-05-13 13:09:48 +02:00
parent 4af3695347
commit 80771ac3b4
1 changed files with 10 additions and 3 deletions
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src/match.c
+10 -3
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@@ -891,8 +891,15 @@ void badword_config_free(ConfigItem_badword *e)
*/ */
void mask_ipv6_rawip(const char *src, int prefix, char *dst) void mask_ipv6_rawip(const char *src, int prefix, char *dst)
{ {
int full_bytes = prefix / 8; int full_bytes, leftover_bits;
int leftover_bits = prefix % 8;
if (prefix < 0)
prefix = 0;
else if (prefix > 128)
prefix = 128;
full_bytes = prefix / 8;
leftover_bits = prefix % 8;
if (src != dst) if (src != dst)
memcpy(dst, src, 16); memcpy(dst, src, 16);
@@ -960,7 +967,7 @@ const char *format_ipv6_prefix_reject_message(const char *template,
int prefix) int prefix)
{ {
static char buf[512]; static char buf[512];
char prefix_len_str[8]; char prefix_len_str[16];
char addr_str[128]; /* generously oversized; longest IPv6 string form is ~46 chars */ char addr_str[128]; /* generously oversized; longest IPv6 string form is ~46 chars */
const char *vars[3], *values[3]; const char *vars[3], *values[3];