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Last Commit: 08 Feb 19
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Friday 10 Feb
8:07 pm

gernst

Added proc "membership_rel::expire" so that all membership states are now covered. Note: The Oracle part is best effort only!

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Tuesday 07 Feb
6:50 pm

gustafn

Cluster reform

- Support for dynamic cluster nodes:

Previous versions of OpenACS required to know the IP addresses of

the cluster nodes in advance, which is a show-stopper for many cloud

applications.

The new functionality allows arbitrary nodes to register as client

nodes at the canonical server, provided that these know a shared

secret. All messages of the intra-cluster talk are now

cryptographically signed using this shared secret.

In the current version, the shared secret key has to be specified in

the NaviServer configuration file (ClusterSecret). Later versions

will support the use of other measures such as generated keys, kept

as files.

Also in the new version it is still possible to use static peer

addresses (which do not have to register during startup).

- Support for multiple protocols for intra-cluster talk

Previous version of OpenACS required the communication of the

intra-cluster talk over HTTP. With these changes, multiple protocols

are supported. Most prominently HTTPS can be used, which is required

by some organization for all web communication, especially for cloud

applications. Other protocols might be added later (e.g. UDP).

- Nodes (such as the canonical server) can be specified via URL

locations. These location specifier have the following advantages

over classical IP address and port.

* support different protocols (http, https, udp)

* support of IP addresses or DNS names

* when DNS names map to multiple IP addresses

(e.g. multiple IPv4 and/or multiple IPv6 addresses)

the new parameter PreferredLocationRegexp can be use

to select the wanted. When this regexp does not match

any of the addresses, the first address is used.

* ports are now optional (except UDP)

* for location specifier: https://openacs.org

- Support for cluster communication statistics

(requires xotcl-request-monitor)

These statistics show the amount of intra-server

communication. The following statistics are collected

per node:

- number of broadcast operations

- number of send operations (active flushes)

- number of receive operation (passive flushes)

For N cluster nodes, the send operations are

basically the number of broadcast operations times

the number of nodes minus one.

These statistics can also be used prior to cluster

enabling, to obtain the number of potential broadcast

operations.

Kernel Parameters

CanonicalServer : location of the canonical server

ClusterAuthorizedIP : obsolete

ClusterEnabledP : unchanged

ClusterPeerIP : obsolete

EnableLoggingP : unchanged

PreferredLocationRegexp : new

DynamicClusterPeers : new, no not edit

Differences between old and new value for "CanonicalServer":

old:

- specify IP address with port

- example: 137.208.116.31:443

new:

- specify URL location

- support different protocols (http, https, udp)

- support of IP address or domain name

- when domain name maps to different IP addresses

(e.g. multiple IPv4 and/or multiple IPv6 addresses)

PreferredLocationRegexp can be use to select the wanted.

When the provided regexp does not match any of

the addresses, take the first address.

- port is optional

- example: https://openacs.org

Sample setup

Old:

CanonicalServer : 137.208.116.31:443

ClusterAuthorizedIP : 137.208.116.31

ClusterPeerIP : 137.208.116.31:443 137.208.116.31:8443

ClusterEnabledP : 1

EnableLoggingP : 1

New:

CanonicalServer : https://openacs.org

PreferredLocationRegexp : https://

ClusterEnabledP : 1

EnableLoggingP : 1

#

# Cluster secret for intra-cluster communications in NaviServer

# configuration file. Clustering will not be enabled if no value is

# provided.

#

ns_section ns/server/$server/acs {

# ...

ns_param ClusterSecret "please change me"

}

#-----------------------------------------------------------------------

# Support for munin statistics

#

# 1) install munin plugins for naviserver (munin-plugins-ns.git)

# 2) add link to the munin plugins (replace "openacs" by the name

# of your server in the munin configuration)

# /etc/munin/plugins/naviserver_openacs_count_cluster -> /usr/share/munin/plugins/naviserver_count

# 3) in the plugin plugin configuration (e.g., etc/munin/plugin-conf.d/naviserver)

# add a section like the following (again, replace "openacs" by the server name you used)

#

# [naviserver_openacs_count_cluster]

# env.title Cluster

# env.vars cluster:broadcast cluster:sent cluster:received

#

# 4) restart munin

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12:47 pm

antoniop

Deprecate acs_privacy:: api and inline the few usages in the dotlrn packages

See https://openacs.org/forums/message-view?message_id=5672076

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Thursday 01 Dec 2022
5:39 pm

gustafn

new partial index for a common query

... checking for "approved" members

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Tuesday 11 Oct 2022
11:17 am

antoniop

Cleanup leftover util user messages, that we won't persist anymore

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Saturday 08 Oct 2022
10:07 pm

gustafn

Cleanup of acs_object_context_index' and friends in creation scripts

This change completes the commit [1] from 2019, where the cleanup was performed

acs_object_context_index and its maintenance functions just as an update script.

This change addresses this also in the creation scripts and in packages, still

depending on the old functions.

[1] https://fisheye.openacs.org/changelog/OpenACS?cs=oacs-5-10%3Ahectorr%3A20190708160122

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Saturday 30 Jul 2022
2:00 pm

gustafn

Adjust legacy data types of acs_object_types.object_type and acs_objects.object_type

This change addresses the problem mentioned in

https://cvs.openacs.org/changelog/OpenACS?cs=oacs-5-10%3Agustafn%3A20220729185340

https://github.com/openacs/openacs-core/commit/be44691f06627678122bd913bc3c95c80e93f403

which happens in some legacy applications (such as

e.g. openacs.org) where the data types of the following two

attributes are different.

acs_object_types.object_type

acs_objects.object_type

On new installations (at least concerning the last 10 years) these

data types are the same. So, probably an update script was missing

ages ago.

Since this change affects the basic object structure, MANY views

depend on this datatype and have to be dropped and recreate to

allow the correction of the datatype.

Therefore, we do not want to run this script on all sites, but

only on those where it is necessary.

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Friday 22 Jul 2022
7:37 pm

gustafn

Added membership "expired" to membership states. "expired" can be

used for "dormant" accounts, which are neither "banned" nor "deleted".

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Wednesday 06 Jul 2022
5:37 pm

gustafn

added ADP:ICON to the list of accepted tags (for new instances)

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Wednesday 23 Feb 2022
7:24 pm

gustafn

Align names used in utility db functions in Oracle and PostgreSQL

Over the years, the names used in the function for PostgreSQL and

Oracle drifted away, which is a problem when using call-by-name

convention for stored procedures. Furthermore, recent Oracle versions

do not allow attributes named "table" (for table_name). So the longer

version is now used uniformily. Fortunately, nsf allow abbreviation

for named parameters (like Tcl does), such one can use both

"-table_name" and "-table".

Bumped version number to 5.10.1d7.

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Monday 21 Feb 2022
6:53 pm

gustafn

fix broken function_args definition

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Sunday 05 Dec 2021
5:13 pm

gustafn

improve spelling

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Tuesday 12 Oct 2021
11:27 am

hectorr

Fix default name

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Monday 11 Oct 2021
10:11 pm

gustafn

Refactored and streamlined of cluster infrastructure

- base the API new new cluster infrastructure (including memoize-flush, server_cluster_peer_hosts, etc.)

- improved handling for multiple IP addresses and IPv6

- removed assumptions of local vs. global network drivers

- server_cluster_httpget_from_peers not used anymore

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Sunday 03 Oct 2021
8:20 pm

gustafn

improve spelling in .info files

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8:14 pm

gustafn

fix typo

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8:13 pm

gustafn

added support for SCRYPT (RFC 7914) as password hash function.

The use of scrypt requires NaviServer compiled with OpenSSL 3.0 or newer

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Friday 01 Oct 2021
9:30 am

gustafn

stick to the original names with the "-" since this is also the naming convention outside of OpenACS (e.g. "scram-sha-256")

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Wednesday 29 Sep 2021
2:09 pm

antoniop

Complete reform introduced in https://cvs.openacs.org/changelog/OpenACS?cs=oacs-5-10%3Agustafn%3A20210928124647

- add datamodel change to the creation script

- refactor algorithm names in a way that the new procs will comply with acs-tcl.naming__proc_naming automated test

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Tuesday 28 Sep 2021
2:46 pm

gustafn

Stronger password hashes for OpenACS

This change introduces the possibility to use either the classical

OpenACS password hash algorithm "salted-sha1" or the SCRAM passord

function "scram-sha-256". The latter can be used by (a) using the

most recent version of NaviServer (from Sept 28, 2021 or newer) and

(b) by configuring the password hash preferences via Kernel package

parameter "PasswordHashAlgorithm". The package parameter can contain a

list of multiple hash algorithms in preference order. The most

preferred available algorithm is chosen.

By default, the "PasswordHashAlgorithm" is "salted-sha1", and the

behavior is as before. After upgrading to the new version of acs-tcl

and acs-kernel, the preference list can be configured. When a user

logs in and the preferred available algorithm is different from the

previously used algorithm, the upgrade is performed for the user

automatically.

The usage of SHA1 in OpenACS is easily target of security audits (see

[1]). The biggest danger is that if somebody gets full access to the

"users" table (e.g. when decommissioning a hard disk). In this case

the hashes can be attacked with dictionaries by using some crypto

hardware (when someone gets raw access to the DB, one has usually some

other big problems). However, by using the "scram-sha-256" hash

function this danger is substantially reduced. This function computes

a password hash using PBKDF2 (Password-Based Key Derivation Function

2). This function is used to reduce vulnerabilities of brute-force

attacks against password hashes. The hash function of SCRAM is PBKDF2

[RFC2898] with HMAC as the pseudorandom function (PRF) and with dkLen

== output length of HMAC == output length of the digest function. So,

it uses a better hash algorithm (sha-256 vs. sha1) and applies this a

high number of times (15K times for a password hash computation).

NaviServer supports as well the even better SCRYPT algorithm, but this

is only available when NaviServer is compiled with OpenSSL 3.0 or

newer. On the contrary, scram-sha-256 (actually PKCS5_PBKDF2_HMAC) is

available since OpenSSL 1.0.0 (2015).

All the improved hash functions require NaviServer with its tight

integration to the crypto functions of OpenSSL.

[1] https://openacs.org/forums/message-view?message_id=5522562

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Thursday 16 Sep 2021
10:27 am

gustafn

fix release dates in .info files

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Wednesday 15 Sep 2021
6:11 pm

gustafn

release work

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Thursday 02 Sep 2021
7:22 pm

gustafn

bump version numbers of 5.9|5.10 packages to 5.10.0b1

adjust dependencies

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Monday 05 Jul 2021
1:30 pm

antoniop

As we now enforce emails to be lowercase, also sanitize existing data

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Wednesday 24 Mar 2021
6:00 pm

gernst

Added constraint site_nodes_parent_id_ck to table "site_nodes" to avoid certain simple loops on parent_ids

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10:51 am

gustafn

added constraint acs_objects_context_id_ck to avoid certain simple loops on context_ids

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Wednesday 22 Jul 2020
2:16 pm

hectorr

Fix attribute datatype discrepancy

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Monday 11 May 2020
8:51 pm

gustafn

address issue #3436: support for schema name in util__table_exists

TODO: Oracle version is missing

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Sunday 12 Apr 2020
10:52 am

gustafn

Added index on foreign key column to reduce sequential reads on delete

operations, since the optimizer brain fart ((c)Don Baccus) that existed

17 years ago in pg 7.2 seems to be gone

(https://openacs.org/forums/message-view?message_id=142769)

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Saturday 14 Mar 2020
8:01 pm

gustafn

- Convert frequenty used functions from plpgsql

to strict and stable SQL functions, which allow

the PostgreSQL more optimizations

* acs_group__member_p/3

* site_node__url/1

- bump version number to 5.10.0d27

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