Since OpenSSL upstream commit 1696b8909bbe
("Remove -C from dhparam,dsaparam,ecparam") "openssl dhparam" doesn't
support -C anymore.
This commit changes generate-dhparams-c to generate dhparams.c by parsing
"openssl dhparam -in "$1" -text -noout" output directly.
The generated file won't be used on OpenSSL >= 3.0, but it's still
needed to be generated if OVS is built on OpenSSL < 3.0.
Signed-off-by: Timothy Redaelli <tredae...@redhat.com>
---
build-aux/generate-dhparams-c | 79 +++++++++++++++++++++++++++++++----
1 file changed, 71 insertions(+), 8 deletions(-)
diff --git a/build-aux/generate-dhparams-c b/build-aux/generate-dhparams-c
index 1884c99e1..a80db6207 100755
--- a/build-aux/generate-dhparams-c
+++ b/build-aux/generate-dhparams-c
@@ -1,5 +1,74 @@
#! /bin/sh -e
+dhparam_to_c() {
+ local bits
+ local get_p=0
+ local line
+ local nl="
+"
+ local p
+ local i=0
+ while read -r line; do
+ case "$line" in
+ *"DH Parameters: "*)
+ bits=${line#*DH Parameters: (}
+ bits=${bits% bit)}
+ continue
+ ;;
+ "P:"|"prime:")
+ get_p=1
+ continue
+ ;;
+ "G: "*|"generator: "*)
+ g=${line#*(}
+ g=${g%)}
+ g=$(printf "0x%.2X" "$g")
+ continue
+ ;;
+ esac
+ if [ "$get_p" = 1 ]; then
+ IFS=":"
+ for x in $line; do
+ [ -z "$p" ] && [ "$x" = "00" ] && continue
+ [ $i -ge 10 ] && i=0
+ [ $i -eq 0 ] && p="$p$nl "
+ x=0x$x
+ p=$(printf "%s 0x%.2X," "$p" "$x")
+ i=$((i + 1))
+ done
+ unset IFS
+ fi
+ done <<EOF
+$(openssl dhparam -in "$1" -text -noout)
+EOF
+ p=${p%,}
+ cat <<EOF
+DH *get_dh${bits}(void)
+{
+ static unsigned char dhp_${bits}[] = {$p
+ };
+ static unsigned char dhg_${bits}[] = {
+ $g
+ };
+ DH *dh = DH_new();
+ BIGNUM *p, *g;
+
+ if (dh == NULL)
+ return NULL;
+ p = BN_bin2bn(dhp_${bits}, sizeof(dhp_${bits}), NULL);
+ g = BN_bin2bn(dhg_${bits}, sizeof(dhg_${bits}), NULL);
+ if (p == NULL || g == NULL
+ || !my_DH_set0_pqg(dh, p, NULL, g)) {
+ DH_free(dh);
+ BN_free(p);
+ BN_free(g);
+ return NULL;
+ }
+ return dh;
+}
+EOF
+}
+
cat <<'EOF'
/* Generated automatically; do not modify! -*- buffer-read-only: t -*-
*
@@ -22,11 +91,5 @@ my_DH_set0_pqg(DH *dh, BIGNUM *p, const BIGNUM **q
OVS_UNUSED, BIGNUM *g)
#endif
}
EOF
-(openssl dhparam -C -in lib/dh2048.pem -noout &&
-openssl dhparam -C -in lib/dh4096.pem -noout) | sed '
- s/^static DH/DH/
- s/\(get_dh[0-9]*\)()/\1(void)/
- s/\(DH_set0_pqg\)/my_\1/
- s/[ ]*$//
- s/ / /g
-'
+dhparam_to_c lib/dh2048.pem
+dhparam_to_c lib/dh4096.pem
--
2.37.3
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