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authorKim Alvefur <zash@zash.se>2022-07-11 17:11:38 +0200
committerKim Alvefur <zash@zash.se>2022-07-11 17:11:38 +0200
commit62438f482ed8cf1c361dc4904baefcd893998403 (patch)
tree4bfe84f658848aa56d9c23126c78a054b126b611 /util-src
parente893bbf6817ff4193d9639afc40143fd792c9a4b (diff)
downloadprosody-62438f482ed8cf1c361dc4904baefcd893998403.tar.gz
prosody-62438f482ed8cf1c361dc4904baefcd893998403.zip
util.crypto: Use Lua 5.2 API for predictable buffer size
In Lua 5.3 LUAL_BUFFERSIZE is a macro computed from sizeof and is thus not known at pre-processing time, so this does not work. Since Lua 5.1 is no longer supported, we can use luaL_prepbuffsize() which is available from Lua 5.2
Diffstat (limited to 'util-src')
-rw-r--r--util-src/crypto.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/util-src/crypto.c b/util-src/crypto.c
index 0f4edb51..c5ecf9ab 100644
--- a/util-src/crypto.c
+++ b/util-src/crypto.c
@@ -485,12 +485,7 @@ static int Lbuild_ecdsa_signature(lua_State *L) {
luaL_buffinit(L, &sigbuf);
- // COMPAT w/ Lua 5.1
- #if LUAL_BUFFERSIZE < 128
- #error Configured LUAL_BUFFERSIZE is too small for this operation
- #endif
-
- unsigned char *buffer = (unsigned char*)luaL_prepbuffer(&sigbuf);
+ unsigned char *buffer = (unsigned char*)luaL_prepbuffsize(&sigbuf, rlen+slen+32);
int len = i2d_ECDSA_SIG(sig, &buffer);
luaL_addsize(&sigbuf, len);
luaL_pushresult(&sigbuf);