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Windows secure_session(): Minimize and document specific race conditon #1205

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Aug 10, 2024
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Windows secure_session(): Minimize and document specific race conditon #1205

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8 changes: 8 additions & 0 deletions easyrsa3/easyrsa
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Original file line number Diff line number Diff line change
Expand Up @@ -785,10 +785,18 @@ secure_session() {
secured_session="${EASYRSA_TEMP_DIR}/${session}"

# atomic:
# ONLY effects Windows 11 "broken" mkdir.exe
# The procedure now is a "poor man's" version
# of an atomic directory creation call.
# The "race condition" still exists but is minimized.
# What remains is equivalent to 32bit hash collision.
[ -d "$secured_session" ] && continue
if mkdir "$secured_session"; then
# Check mkdir.exe has created the directory
[ -d "$secured_session" ] || \
die "secure_session - mkdir FAILED"
[ -f "$secured_session"/temp.0.1 ] && \
die "secure_session - temp-file EXISTS"

# New session requires safe-ssl conf
unset -v OPENSSL_CONF safe_ssl_cnf_tmp \
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