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Support configurable TXT record length via TEST_DNS_TXT_LEN (improved acme-dns compatibility) #34

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Support configurable TXT record length via TEST_DNS_TXT_LEN (improved acme-dns compatibility) #34

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29 changes: 27 additions & 2 deletions letest.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -1501,8 +1501,33 @@ le_test_dnsapi() {
_initpath $TestingDomain
addcommand="${api}_add"
rmcommand="${api}_rm"
random_string="$(date -u "+%s")"
record_content="acmeTestTxtRecord_acmeTestTxtRecord_acmeTestTxtRecord_$random_string"

base_prefix="acmeTestTxtRecord_"

if command -v openssl >/dev/null 2>&1; then
rand="$(openssl rand -hex 256 2>/dev/null)"
elif [ -r /dev/urandom ]; then
rand="$(od -An -N256 -tx1 /dev/urandom 2>/dev/null | tr -cd '0-9a-f')"
else
rand="$(date -u +%s%N)_$$"
fi

record_content="${base_prefix}${rand}"

txt_len="${TEST_DNS_TXT_LEN:-43}"

if ! echo "$txt_len" | grep -Eq '^[0-9]+$'; then
txt_len=43
elif [ "$txt_len" -lt 28 ]; then
txt_len=43
fi

while [ "${#record_content}" -lt "$txt_len" ]; do
record_content="${record_content}${rand}"
done

record_content="$(printf '%s' "$record_content" | cut -c1-"$txt_len")"

_assertcmd "$addcommand acmetestXyzRandomName.$TestingDomain $record_content" || return
_assertcmd "$rmcommand acmetestXyzRandomName.$TestingDomain $record_content" || return
) || return
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