Merge branch 'fix/type/__postgres_role/implement-alter' into 'master'
__postgres_role: implement modification of roles See merge request ungleich-public/cdist!973
This commit is contained in:
commit
e854db096e
2 changed files with 226 additions and 54 deletions
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@ -1,6 +1,7 @@
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#!/bin/sh
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#!/bin/sh -e
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#
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# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
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# 2020 Dennis Camera (dennis.camera at ssrq-sds-fds.ch)
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#
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# This file is part of cdist.
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#
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@ -18,25 +19,133 @@
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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case "$("${__explorer}/os")"
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case $("${__explorer:?}/os")
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in
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netbsd)
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(netbsd)
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postgres_user='pgsql'
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;;
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openbsd)
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(openbsd)
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postgres_user='_postgresql'
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;;
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*)
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(*)
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postgres_user='postgres'
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;;
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esac
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rolename=${__object_id:?}
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name="$__object_id"
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if test -n "$(su - "$postgres_user" -c "psql postgres -twAc \"SELECT 1 FROM pg_roles WHERE rolname='$name'\"")"
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psql_query() {
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su -l "${postgres_user}" -c "$(
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printf "psql -q -F '\034' -R '\036' -wAc '%s'" \
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"$(printf %s "$*" | sed "s/'/'\\\\''/g")"
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)"
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}
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password_check_login() (
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PGPASSWORD=$(cat "${__object:?}/parameter/password"; printf .)
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PGPASSWORD=${PGPASSWORD%?.}
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export PGPASSWORD
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psql -q -w -h localhost -U "${rolename}" template1 -c '\q' >/dev/null 2>&1
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)
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role_properties=$(
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psql_query "SELECT * FROM pg_roles WHERE rolname = '${rolename}'" \
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| awk '
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BEGIN { RS = "\036"; FS = "\034" }
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/^\([0-9]+ rows?\)/ { exit }
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NR == 1 { for (i = 1; i <= NF; i++) cols[i] = $i; next }
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NR == 2 { for (i = 1; i <= NF; i++) printf "%s=%s\n", cols[i], $i }
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'
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)
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if test -n "${role_properties}"
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then
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echo 'present'
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else
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echo 'absent'
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# Check if the user's properties match the parameters
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for prop in login createdb createrole superuser
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do
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bool_should=$(test -f "${__object:?}/parameter/${prop}" && echo 't' || echo 'f')
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bool_is=$(
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printf '%s\n' "${role_properties}" |
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awk -F '=' -v key="${prop}" '
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BEGIN {
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if (key == "login")
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key = "canlogin"
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else if (key == "superuser")
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key = "super"
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key = "rol" key
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}
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$1 == key {
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sub(/^[^=]*=/, "")
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print
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}
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'
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)
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test "${bool_is}" = "${bool_should}" || {
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state='different properties'
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}
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done
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# Check password
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passwd_stored=$(
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psql_query "SELECT rolpassword FROM pg_authid WHERE rolname = '${rolename}'" \
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| awk 'BEGIN { RS = "\036" } NR == 2'
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printf .
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)
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passwd_stored=${passwd_stored%?.}
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if test -f "${__object:?}/parameter/password"
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then
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passwd_should=$(cat "${__object:?}/parameter/password"; printf .)
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fi
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passwd_should=${passwd_should%?.}
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if test -z "${passwd_stored}"
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then
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test -z "${passwd_should}" || state="${state:-different} password"
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elif expr "${passwd_stored}" : 'SCRAM-SHA-256\$.*$' >/dev/null
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then
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# SCRAM-SHA-256 "encrypted" password
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# NOTE: There is currently no easy way to check SCRAM passwords without
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# logging in
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password_check_login || state="${state:-different} password"
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elif expr "${passwd_stored}" : 'md5[0-9a-f]\{32\}$' >/dev/null
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then
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# MD5 "encrypted" password
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if command -v md5sum >/dev/null 2>&1
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then
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should_md5=$(
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printf '%s%s' "${passwd_should}" "${rolename}" \
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| md5sum - | sed -e 's/[^0-9a-f]*$//')
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elif command -v gmd5sum >/dev/null 2>&1
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then
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should_md5=$(
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printf '%s%s' "${passwd_should}" "${rolename}" \
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| gmd5sum - | sed -e 's/[^0-9a-f]*$//')
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elif command -v openssl >/dev/null 2>&1
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then
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should_md5=$(
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printf '%s%s' "${passwd_should}" "${rolename}" \
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| openssl dgst -md5 | sed 's/^.* //')
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fi
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if test -n "${should_md5}"
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then
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test "${passwd_stored}" = "md5${should_md5}" \
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|| state="${state:-different} password"
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else
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password_check_login || state="${state:-different} password"
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fi
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else
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# unencrypted password (unsupported since PostgreSQL 10)
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test "${passwd_stored}" = "${passwd_should}" \
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|| state="${state:-different} password"
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fi
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test -n "${state}" || state='present'
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else
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state='absent'
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fi
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echo "${state}"
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@ -1,6 +1,7 @@
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#!/bin/sh -e
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#
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# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
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# 2020 Dennis Camera (dennis.camera at ssrq-sds-fds.ch)
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#
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# This file is part of cdist.
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#
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@ -18,48 +19,110 @@
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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case "$(cat "${__global}/explorer/os")"
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quote() {
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if test $# -gt 0
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then
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printf '%s' "$*"
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else
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cat -
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fi | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/'/"
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}
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case $(cat "${__global:?}/explorer/os")
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in
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netbsd)
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(netbsd)
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postgres_user='pgsql'
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;;
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openbsd)
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(openbsd)
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postgres_user='_postgresql'
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;;
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*)
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(*)
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postgres_user='postgres'
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;;
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esac
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name="$__object_id"
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state_is="$(cat "$__object/explorer/state")"
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state_should="$(cat "$__object/parameter/state")"
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rolename=${__object_id:?}
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state_is=$(cat "${__object:?}/explorer/state")
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state_should=$(cat "${__object:?}/parameter/state")
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[ "$state_is" = "$state_should" ] && exit 0
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if test "${state_is}" = "${state_should}"
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then
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exit 0
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fi
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case "$state_should" in
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present)
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if [ -f "$__object/parameter/password" ]; then
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password="$(cat "$__object/parameter/password")"
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psql_query() {
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printf 'su -l %s -c %s\n' \
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"$(quote "${postgres_user}")" \
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"$(quote "psql postgres -q -w -c $(quote "$1")")"
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}
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psql_set_password() {
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# NOTE: Always make sure that the password does not end up in psql_history!
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# NOTE: Never set an empty string as the password, because they can be
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# interpreted differently by different tooling.
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if test -s "${__object:?}/parameter/password"
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then
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cat <<-EOF
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exec 3< "\${__object:?}/parameter/password"
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su -l '${postgres_user}' -c 'psql -q -w postgres' <<'SQL'
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\set HISTFILE /dev/null
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\set pw \`cat <&3\`
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ALTER ROLE "${rolename}" WITH PASSWORD :'pw';
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SQL
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exec 3<&-
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EOF
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else
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psql_query "ALTER ROLE \"${rolename}\" WITH PASSWORD NULL;"
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fi
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booleans=""
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for boolean in login createdb createrole superuser; do
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if [ ! -f "$__object/parameter/$boolean" ]; then
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boolean="no${boolean}"
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fi
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upper=$(echo $boolean | tr '[:lower:]' '[:upper:]')
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booleans="$booleans $upper"
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}
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role_properties_should() {
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_props=
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for _prop in login createdb createrole superuser
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do
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_props="${_props}${_props:+ }$(
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if test -f "${__object:?}/parameter/${_prop}"
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then
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echo "${_prop}"
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else
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echo "no${_prop}"
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fi \
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| tr '[:lower:]' '[:upper:]')"
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done
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printf '%s\n' "${_props}"
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unset _prop _props
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}
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[ -n "$password" ] && password="PASSWORD '$password'"
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cat << EOF
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su - '$postgres_user' -c "psql postgres -wc \"CREATE ROLE \\\\\"$name\\\\\" WITH $password $booleans;\""
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EOF
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case ${state_should}
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in
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(present)
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case ${state_is}
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in
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(absent)
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psql_query "CREATE ROLE \"${rolename}\" WITH $(role_properties_should);"
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psql_set_password
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;;
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absent)
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cat << EOF
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su - '$postgres_user' -c "dropuser \"$name\""
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EOF
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(different*)
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if expr "${state_is}" : 'different.*properties' >/dev/null
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then
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psql_query "ALTER ROLE \"${rolename}\" WITH $(role_properties_should);"
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fi
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if expr "${state_is}" : 'different.*password' >/dev/null
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then
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psql_set_password
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fi
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;;
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(*)
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printf 'Invalid state reported by state explorer: %s\n' "${state_is}" >&2
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exit 1
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;;
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esac
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;;
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(absent)
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printf 'su -l %s -c %s\n' \
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"$(quote "${postgres_user}")" \
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"$(quote "dropuser $(quote "${rolename}")")"
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;;
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esac
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