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refactor: always use a temp file for interacting with ssh keys

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Rather than have stdin open everywhere, try to coerce input into a temporary file for later use.
This commit is contained in:
Jose Diaz-Gonzalez
2019-04-22 16:49:50 -04:00
parent ca0b2937b9
commit 6a5bbd63a3
1 changed files with 11 additions and 6 deletions
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17
plugins/ssh-keys/subcommands/add
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@@ -9,26 +9,31 @@ add_keys() {
local cmd="ssh-keys:add"
[[ "$1" == "$cmd" ]] && shift 1
declare NAME="$1" KEY_FILE="$2"
local key_contents
local TMP_KEY_FILE
TMP_KEY_FILE=$(mktemp "/tmp/${FUNCNAME[0]}.XXXX")
trap 'rm -rf "$TMP_KEY_FILE" >/dev/null' RETURN INT TERM EXIT
if [[ -n "$KEY_FILE" ]]; then
key_contents="$(cat "$KEY_FILE")"
true
elif [[ -p /dev/stdin ]]; then
local key_contents
read -r key_contents
echo "$key_contents" > "$TMP_KEY_FILE"
KEY_FILE="$TMP_KEY_FILE"
else
dokku_log_fail "No key specified via file or pipe"
fi
if [[ -n "$key_contents" ]]; then
if [[ -s "$KEY_FILE" ]]; then
dokku_log_fail "No key specified via file or pipe"
fi
local count="$(wc -l <<<"$key_contents")"
local count="$(wc -l "$KEY_FILE")"
[[ "$count" -eq 1 ]] || dokku_log_fail "Too many keys provided, set one per invocation of dokku ssh-keys:add <NAME> <KEY_FILE>"
ssh-keygen -lf /dev/stdin <<<"$key_contents" &>/dev/null || dokku_log_fail "Key specified in is not a valid ssh public key"
ssh-keygen -lf "$KEY_FILE" &>/dev/null || dokku_log_fail "Key specified in is not a valid ssh public key"
create_ssh_key_file
verify_ssh_key_exists
echo "$key_contents" | sshcommand acl-add dokku "$NAME" || dokku_log_fail "sshcommand returned an error: $?"
sshcommand acl-add dokku "$NAME" "$KEY_FILE" || dokku_log_fail "sshcommand returned an error: $?"
verify_ssh_key_file
}