Breaking changes since InspIRCd 3

NOTE — This document only lists breaking changes between InspIRCd 3 and InspIRCd 4. There are many backwards compatible changes that have been made which are not listed in this document.

System

• A compiler with C++17 support is now required to build InspIRCd. In practise this means you will need to use at least Clang 5, GCC 7, or MSVC 19.15.

• CMake 3.20+ is now required to build on Windows.

• Debian GNU/kFreeBSD is no longer supported. It is recommended that you switch to Debian GNU/Linux instead.

• GnuTLS 3.3.5+ is now required by the ssl_gnutls module.

• OpenSSL 1.1.1+ is now required by the ssl_openssl module.

• PCRE2 is now required by the regex_pcre module. Most regular expressions should be compatible but if not you can use ./modulemanager install m_regex_oldpcre to install the a module that uses the PCRE1 library.

• Perl 5.26+ is now required by ./configure and all of the included Perl tools.

• Windows 10 build 17061 is now the minimum supported version of Windows.

Modules

• The blockcaps module has been removed. If you wish to keep this behaviour then you should load the anticaps module instead. See the documentation in modules.conf.example for more details.

• The censor module has been moved to inspircd-contrib. In order to upgrade either remove this module from your configuration or run ./modulemanager install m_censor to install it.

• The clones module has been moved to inspircd-contrib. In order to upgrade either remove this module from your configuration or run ./modulemanager install m_clones to install it.

• The flashpolicyd module has been removed with no replacement. This module is no longer needed as Flash Player has been retired by Adobe.

• The hostchange module has been moved to inspircd-contrib. In order to upgrade either remove this module from your configuration, run ./modulemanager install m_hostchange to install it, or migrate to the cloak_static module and/or the cloak_user module.

• The lockserv module has been moved to inspircd-contrib. In order to upgrade either remove this module from your configuration or run ./modulemanager install m_lockserv to install it.

• The modenotice module has been moved to inspircd-contrib. In order to upgrade either remove this module from your configuration or run ./modulemanager install m_modenotice to install it.

• The nopartmsg module has been moved to inspircd-contrib. In order to upgrade either remove this module from your configuration, run ./modulemanager install m_nopartmsg to install it, or migrate to the muteban module which now also applies to part messages.

• The nationalchars module has been removed. In order to upgrade you should switch to the codepage module instead.

• The regex_tre module has been moved to inspircd-contrib. In order to upgrade either remove this module from your configuration or run ./modulemanager install m_regex_tre to install it.

• The userip module has been moved to inspircd-contrib. In order to upgrade either remove this module from your configuration or run ./modulemanager install userip to install it.

Config

• <cban:glob> has been removed with no replacement (now always enabled).

• <cgiirc:opernotice> has been removed. If you wish to keep this behaviour you can use server operator snomask privileges instead.

• <chanhistory:enableumode> has been removed with no replacement (now always enabled).

• <channels:opers> has been removed. If you wish to keep this behaviour then set <oper:maxchans> or <type:maxchans> instead. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <channels:users> has been removed. If you wish to keep this behaviour then set <connect:maxchans> instead. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <class:snomasks> no longer has a default value. In order to keep v3 behaviour you should set it to *.

• <commonchans:invite> has been removed with no replacement (now always enabled).

• <config:format> has been removed with no replacement. If you were previously using compat-style config parsing you will have to go through your config and replace all C-style escape sequences with XML-style escape sequences.

• <connectban:duration> has been moved to <connectban:banduration>. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <deaf:enableprivdeaf> has been removed with no replacement (now always enabled).

• <disabled:fakenonexistant> has been moved to <disabled:fakenonexistent>. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <exemptfromfilter:channel> has been moved to <exemptfromfilter:target>. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <gnutls> has been removed (other than <gnutls:onrehash>). You should configure a TLS (SSL) profile instead.

• <httpstats:enableparams> has been removed with no replacement (now always enabled).

• <limits:maxgecos> has been moved to <limits:maxreal>. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <mbedtls> has been removed (other than <mbedtls:onrehash>). You should configure a TLS (SSL) profile instead.

• <noctcp:enableumode> has been removed with no replacement (now always enabled).

• <openssl> has been removed (other than <openssl:onrehash>). You should configure a TLS (SSL) profile instead.

• <oper:autologin> must now be set to "relaxed" or "strict" instead of "yes". To keep v3 behaviour you should set it to "relaxed".

• <options:allowzerolimit> has been removed with no replacement (now always disabled).

• <options:casemapping> has been removed with no replacement (ascii casemapping is now the only core option).

• <options:moronbanner> has been moved to <options:xlinemessage>. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <override:enableumode> has been removed with no replacement (now always enabled).

• <power> has been removed. If you wish to keep this behaviour you can use server operator command privileges instead.

• <repeat:maxsecs> has been moved to <repeat:maxtime>. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <security:allowcoreunload> has been removed with no replacement (now always disabled).

• <security:hidewhois> has been moved to <security:hideserver>. This move originally happened in v3 so if you are using a v3 config you probably don't need to do anything.

• <showwhois:showfromopers> has been removed. If you wish to make a server operator immune from this mode then give them the users/secret-whois privilege.

• <shun:affectsopers> has been removed. If you wish to keep this behaviour then give your server operators the servers/ignore-shuns privilege.

• <sslmodes:enableumode> has been removed with no replacement (now always enabled).

• <svshold:silent> has been removed with no replacement (now always enabled).

• The syntax of the passforward module's command fields has changed. You should switch your config to use the new style %foo% variables.

Other

• Compatibility with the 1202 (v2) protocol has been removed. You will need to link against an intermediary v3 server if you are upgrading from v2.

• inspircd-genssl has been removed with no replacement. You should use a CA-validated certificate for your server rather than a self-signed one.

• The /FPART command has been removed. If you wish to keep this behaviour you should add an alias that calls the /REMOVE command.

• The /PROTOCTL command has been moved to inspircd-contrib. If you wish to keep this behaviour then you can run ./modulemanager install m_protoctl to install it.