# We use env, because in some environments of our build farm
# the Perl 5.010 interpreter is only reachable via $PATH
+# Copyright (c) The Exim Maintainers 2024
+# SPDX-License-Identifier: GPL-2.0-or-later
+
###############################################################################
# This is the controlling script for the "new" test suite for Exim. It should #
# be possible to export this suite for running on a wide variety of hosts, in #
my ($parm_ipv4, $parm_ipv6, $parm_ipv6_stripped);
my $parm_hostname;
+# Convenience for regex'
+# for tighter, see https://metacpan.org/dist/IO-Socket-IP/source/lib/IO/Socket/IP.pm#L37
+my $re_ipv4 = qr/\d{1,3}(?:\.\d{1,3}){3}/;
+my $re_6g = qr/[[:xdigit:]]{1,4}/;
+my $re_6s = qr/${re_6g}:/;
+my $re_ipv6 = qr/${re_6s}{0,7}${re_6g}(?:::${re_6s}{0,5}${re_6g})?/;
+my $re_ip = qr/(?:${re_ipv4}|${re_ipv6})/;
+
###############################################################################
###############################################################################
s/forced fail after \d seconds/forced fail after d seconds/;
# This message may contain a different DBM library name
- s/Failed to open \S+( \([^\)]+\))? file/Failed to open DBM file/;
+ s/Failed to open \S+( \([^\)]+\))? file/Failed to open hintsdb file/;
# The message for a non-listening FIFO varies
s/:[^:]+: while opening named pipe/: Error: while opening named pipe/;
my($date1,$date2,$date3,$expired) = ($1,$2,$3,$4);
$expired = '' if !defined $expired;
- # Round the time-difference up to nearest even value
- my($increment) = ((date_seconds($date3) - date_seconds($date2) + 1) >> 1) << 1;
+ # Make time-difference minimum 2, and rounded up to even value
+ my($increment) = date_seconds($date3) - date_seconds($date2) + 1;
+ $increment = 2 if ($increment == 0);
+ $increment = ($increment >> 1) << 1;
# We used to use globally unique replacement values, but timing
# differences make this impossible. Just show the increment on the
s/\d\d-\w\w\w-\d\d\d\d\s\d\d:\d\d:\d\d\s[-+]\d\d\d\d,/06-Sep-1999 15:52:48 +0100,/gx;
# Dates/times in debugging output for writing retry records
- if (/^ first failed=(\d+) last try=(\d+) next try=(\d+) (.*)$/)
+ if (/^(.+)first failed=(\d+) last try=(\d+) next try=(\d+) (.*)$/)
{
- my($next) = $3 - $2;
- $_ = " first failed=dddd last try=dddd next try=+$next $4\n";
+ my($next) = $4 - $3;
+ $_ = "$1first failed=dddd last try=dddd next try=+$next $5\n";
}
- s/^(\s*)now=\d+ first_failed=\d+ next_try=\d+ expired=(\w)/$1now=tttt first_failed=tttt next_try=tttt expired=$2/;
- s/^(\s*)received_time=\d+ diff=\d+ timeout=(\d+)/$1received_time=tttt diff=tttt timeout=$2/;
+ s/^(.*)now=\d+ first_failed=\d+ next_try=\d+ expired=(\w)/$1now=tttt first_failed=tttt next_try=tttt expired=$2/;
+ s/^(.*)received_time=\d+ diff=\d+ timeout=(\d+)/$1received_time=tttt diff=tttt timeout=$2/;
# Time to retry may vary
s/time to retry = \S+/time to retry = tttt/;
s/TLS error on connection \(gnutls_handshake\): Error in the pull function\./a TLS session is required but an attempt to start TLS failed/g;
# (replace old with new, hoping that old only happens in one situation)
- s/TLS error on connection to \d{1,3}(.\d{1,3}){3} \[\d{1,3}(.\d{1,3}){3}\] \(gnutls_handshake\): A TLS packet with unexpected length was received./a TLS session is required for ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4], but an attempt to start TLS failed/g;
+ s/TLS error on connection to ${re_ipv4} \[${re_ipv4}\] \(gnutls_handshake\): A TLS packet with unexpected length was received./a TLS session is required for ip4.ip4.ip4.ip4 [ip4.ip4.ip4.ip4], but an attempt to start TLS failed/g;
s/TLS error on connection from \[127.0.0.1\] \(recv\): A TLS packet with unexpected length was received./TLS error on connection from [127.0.0.1] (recv): The TLS connection was non-properly terminated./g;
# signature algorithm names
s/\(port=(\d+)/"(port=" . new_value($1, "%s", \$next_port)/e;
# This handles "connection from" and the like, when the port is given
- if (!/listening for SMTP on/ && !/Connecting to/ && !/=>/ && !/->/
- && !/\*>/&& !/==/ && !/\*\*/ && !/Connection refused/ && !/in response to/
- && !/T(?:ransport)?:/)
- {
- s/\[([a-z\d:]+|\d+(?:\.\d+){3})\]:(\d+)/"[".$1."]:".new_value($2,"%s",\$next_port)/ie;
- }
+ s/(\[${re_ip}\]:)(\d+)/$1.new_value($2,"%s",\$next_port)/ie
+ unless ( /listening for SMTP on/ || /Connecting to/
+ || /[=*-]>/ || /==/ || /\*\*/
+ || /Connection refused/ || /in response to/
+ || /T(?:ransport)?:/
+ );
# Port in host address in spool file output from -Mvh
s/^(--?host_address) (.*[:.])\d+$/$1 ${2}9999/;
s/([\s,])S=\d+\b/$1S=sss/;
s/:S\d+\b/:Ssss/;
- s/^(\s*\d+[mhd]\s+)\d+(\s+(?:[a-z0-9-]{23}|[a-z0-9-]{18}) <)/TTT sss$2/i if $is_stdout;
+ s/^(\s*\d+[mhd]\s+)\d+(\s+(?:[[:alnum:]-]{23}|[[:alnum:]-]{16}) <)/TTT sss$2/i if $is_stdout;
s/\sSIZE=\d+\b/ SIZE=ssss/;
s/\ssize=\d+\b/ size=sss/ if $is_stderr;
s/old size = \d+\b/old size = sssss/;
s/(TLS error on connection from .* \(SSL_\w+\): error:)(.*)/$1 <<detail omitted>>/;
next if /SSL verify error: depth=0 error=certificate not trusted/;
+ # OpenSSL 3.2.1
# OpenSSL 3.0.0
- s/TLS error \(D-H param setting .* error:\K.*dh key too small/xxxxxxxx:SSL routines::dh key too small/;
+ s/TLS\ error\ \(D-H\ param\ setting\ .*\ error:\K
+ .*
+ (?:dh\ key\ too\ small|unknown\ security\ bits)
+ /xxxxxxxx:SSL routines::dh key too small/x;
# OpenSSL 1.1.1
s/error:\K0B080074:x509 certificate routines:X509_check_private_key(?=:key values mismatch$)/05800074:x509 certificate routines:/;
# remote IPv6 addrs vary
s/^(Connection request from) \[.*:.*:.*\]$/$1 \[ipv6\]/;
+ # Hints DB use of lockfiles is provider-dependent
+ s/Failed to open \K(?:hintsdb|database lock) file (.*\/spool\/db\/[^. ]*)(?:.lockfile)?(?: for reading)?(?=: No such file or directory$)/hintsdb $1/;
+
# openssl version variances
# Error lines on stdout from SSL contain process id values and file names.
# They also contain a source file name and line number, which may vary from
next if /SSL verify error: depth=0 error=certificate not trusted/;
s/SSL3_READ_BYTES/ssl3_read_bytes/i;
s/CONNECT_CR_FINISHED/ssl3_read_bytes/i;
- s/^[[:xdigit:]]+:error:[[:xdigit:]]+(?:E[[:xdigit:]]+)?(:SSL routines:ssl3_read_bytes:[^:]+:).*(:SSL alert number \d\d)$/pppp:error:dddddddd$1\[...\]$2/;
+ s/^[[:xdigit:]]+:error:[[:xdigit:]]+(?:E[[:xdigit:]]+)?
+ (:SSL\ routines:ssl3_read_bytes:)
+ ssl(?:v3|\/tls)
+ ([^:]+:)
+ .*
+ (:SSL\ alert\ number\ \d\d)$
+ /pppp:error:dddddddd$1sslv3$2\[...\]$3/x;
s/^error:\K[^:]*:(SSL routines:ssl3_read_bytes:(tls|ssl)v\d+ alert)/dddddddd:$1/;
s/^error:\K[[:xdigit:]]+:SSL routines::(tlsv13 alert certificate required)$/dddddddd:SSL routines:ssl3_read_bytes:$1/;
- s/^error:\K[[:xdigit:]]+:SSL routines::((tlsv1|sslv3) alert (unknown ca|certificate revoked))$/dddddddd:SSL routines:ssl3_read_bytes:$1/;
+ s/^error:\K
+ [[:xdigit:]]+:SSL\ routines::
+ ((?:tlsv1|sslv3)\ alert\ (?:unknown\ ca|certificate\ revoked))$
+ /dddddddd:SSL routines:ssl3_read_bytes:$1/x;
+ s/^error:\K
+ [[:xdigit:]]+:SSL\ routines::
+ ssl\/tls\ (alert\ (?:unknown\ ca|certificate\ revoked))$
+ /dddddddd:SSL routines:ssl3_read_bytes:sslv3 $1/x;
# gnutls version variances
next if /^Error in the pull function./;
# because they will be different in different binaries.
next if /^$time_pid?
- (?: Berkeley\ DB:\s
- | Probably\ (?:Berkeley\ DB|ndbm|GDBM)
- | Using\ tdb
- | Authenticators:
+ (?: .*\sBerkeley\ DB
+ | \sProbably\ (?:Berkeley\ DB|ndbm|GDBM)
+ | \sUsing\ (?:tdb|sqlite3)
+ | Authenticators\ \((?:built-in|dynamic)\):
| Lookups(?:\(built-in\))?:
| Support\ for:
- | Routers:
- | Transports:
+ | Routers\ \((?:built-in|dynamic)\):
+ | Transports\ \((?:built-in|dynamic)\):
| Malware:
| log\ selectors\ =
| cwd=
)
/x;
+ # Hints DB use of lockfiles is provider-dependent
+ next if /lock(?:ing|ed) .*\/spool\/db\/[^.]+\.lockfile$/;
+ s/closed hints database\K and lockfile$//;
+
+ # Hints DBs with transactions are provider-dependent, and flow changes
+ # to take advantage of them need different opens and different flags.
+ # Drop all the debug output for opens and closes.
+ if (/EXIM_DBOPEN(_MULTI)?: file <.*spool\/db\/retry>/)
+ {
+ $_ = <IN>;
+ next if (/returned from EXIM_DBOPEN(_MULTI)?: 0x[[:xdigit:]]+$/);
+ $_ = <IN>;
+ <IN> if (/returned from EXIM_DBOPEN(_MULTI)?: \(nil\)$/);
+ next;
+ }
+ if (/EXIM_DBCLOSE(_MULTI)?/) { <IN>; next; }
+ next if /retaining retry hintsdb handle$/;
+ next if /using cached retry hintsdb (?:handle|nonpresence)$/;
+ if (/final close of cached retry db$/) { <IN>; <IN>; next; }
+ next if /dbfn_transaction_(?:start|commit)$/;
+
+ # Various hintsdb backends
+ s/(?:bdb|tdb|gdbm|ndbm|sqlite)
+ _open\(flags\ 0x(\d)
+ \ mode\ 0640\)
+ \ (?:No\ such\ file\ or\ directory|unable\ to\ open\ database\ file)$
+ /hintsdb_open(flags 0x$1 mode 0640) No such file or directory/x;
+
# Lines with a leading pid. Only handle >= 4-digit PIDs to avoid converting SMTP respose codes
s/^\s*(\d{4,})\s(?!(?:previous message|in\s|bytes remain in|SMTP accept process running))/new_value($1, "p%s", \$next_pid) . ' '/e;
+ # Connection IDs
+ s/connection_id: \K(\d+)$/new_value($1, "conn%s", \$next_conn)/e;
+
# Debugging lines for Exim terminations and process-generation
next if /(?:postfork: | fork(?:ing|ed) for )/;
next if /^TLS: not preloading server certs$/;
# some platforms are missing the standard CA bundle file
- next if /^tls_set_watch\(\) fail on '\/usr\/lib\/ssl\/cert.pem': No such file or directory$/;
+ next if /^tls_set_watch\(\) fail on '\/usr\/(?:lib\/ssl|local\/openssl3\/etc\/pki\/tls)\/cert.pem': No such file or directory$/;
# drop lookups
- next if /^$time_pid?(?: Lookups\ \(built-in\):
+ next if /^$time_pid?(?: Lookups\ \((?:built-in|dynamic)\):
+ | Loaded\ "[^.]+\.so"\ \(\d+\ lookup\ types\)
| Loading\ lookup\ modules\ from
| Loaded\ \d+\ lookup\ modules
| Total\ \d+\ lookups)/x;
+ # drop loads of dyn-module drivers
+ next if /^$time_pid?(?:Loading\ \w+\ (?:router|transport|auth)\ driver\ from
+ | Loaded\ \w+\ (?:router|transport|auth)$)/x;
+
# drop compiler information
next if /^$time_pid?Compiler:/;
if (/looked up these IP addresses/);
next if /name=localhost address=::1/;
- # drop pdkim debugging header
+ # DKIM: Not all builds include
next if /^DKIM( <<<<<<<<<<<<<<<<<<<<<<<<<<<<<+|: no signatures)$/;
+ next if /try option acl_smtp_dkim$/;
# Some platforms have TIOCOUT, some do not
next if /\d+ bytes remain in socket output buffer$/;
next if /in\s(?:tls_advertise_hosts\?|hosts_require_tls\?)
\sno\s\((option\sunset|end\sof\slist)\)/x;
+ # non-TLS builds cannot have DANE
+
+ next if /lack of DNSSEC traceability precludes DANE$/;
+
# Skip auxiliary group lists because they will vary.
next if /auxiliary group list:/;
next if /failed to load readline:/;
- # Some DBM libraries seem to make DBM files on opening with O_RDWR without
- # O_CREAT; other's don't. In the latter case there is some debugging output
- # which is not present in the former. Skip the relevant lines (there are
- # three of them).
-
- if (/returned from EXIM_DBOPEN: \(nil\)/)
- {
- $_ .= <IN>;
- s?\Q$parm_cwd\E?TESTSUITE?g;
- if (/TESTSUITE\/spool\/db\/\S+ appears not to exist: trying to create/)
- { $_ = <IN>; next; }
- }
-
# Some tests turn on +expand debugging to check on expansions.
# Unfortunately, the Received: expansion varies, depending on whether TLS
# is compiled or not. So we must remove the relevant debugging if it is.
s/unexpected disconnection while reading SMTP command from \[127.0.0.1\] \K\(error: Connection reset by peer\) //;
# Platform-dependent resolver option bits
- s/^ *(?:writing|update) neg-cache entry for [^,]+-\K[0-9a-f]+, ttl/xxxx, ttl/;
+ s/(?:writing|update) neg-cache entry for [^,]+-\K[0-9a-f]+, ttl/xxxx, ttl/;
# timing variance, run-to-run
s/^time on queue = \K1s/0s/;
# so convert them all to "0"
s%(?<!lsearch)[^ ](?=TESTSUITE/aux-fixed/(?:0414.list[12]|0464.domains)$)%0%;
+ # Environment cleaning
+ next if /\w+ in keep_environment\? (yes|no)/;
+
+ # Sizes vary with test hostname
+ s/^cmd buf flush \d+ bytes/cmd buf flush ddd bytes/;
+
+ # Different platforms put different error messages into retry records
+ s/dbfn_write: key=.* datalen \K\d{2,3}$/nn/;
+ s/dbfn_read: size \K\d{2,3}(?= return$)/nnn/;
+
+ # Spool filesystem free space changes on different systems.
+ s/((?:spool|log) directory space =) -?\d+K (inodes =)\s*-?\d+/$1 nnnnnK $2 nnnnn/;
+
# CONTENT_SCAN
next if /try option acl_(?:not_)?smtp_mime$/;
# DISABLE_OCSP
next if /in hosts_requ(est|ire)_ocsp\? (no|yes)/;
+ # WELLKNOWN
+ next if / in wellknown_advertise_hosts\?/;
+
# SUPPORT_PROXY
next if /host in hosts_proxy\?/;
next if / in limits_advertise_hosts?\? no \(matched "!\*"\)/;
# Experimental_XCLIENT
- next if / in hosts_xclient?\? no \(option unset\)/;
+ next if / in hosts_xclient\? no \(option unset\)/;
+
+ # Experimental_WELLKNOWN
+ next if / in hosts_wellknown\? no \(option unset\)/;
# TCP Fast Open
next if /^(ppppp )?setsockopt FASTOPEN: Network Error/;
next if /in tls_resumption_hosts\?/;
next if /RE '.outlook.com/;
- # Environment cleaning
- next if /\w+ in keep_environment\? (yes|no)/;
-
- # Sizes vary with test hostname
- s/^cmd buf flush \d+ bytes/cmd buf flush ddd bytes/;
-
- # Spool filesystem free space changes on different systems.
- s/((?:spool|log) directory space =) -?\d+K (inodes =)\s*-?\d+/$1 nnnnnK $2 nnnnn/;
-
# Non-TLS builds have different expansions for received_header_text
if (s/(with \$received_protocol)\}\} \$\{if def:tls_cipher \{\(\$tls_cipher\)\n$/$1/)
{
next if /^DKIM >> Body data for hash, canonicalized/;
# Not all platforms build with SPF enabled
- next if /^(spf_conn_init|SPF_dns_exim_new|spf_compile\.c)/;
+ next if /(^spf_conn_init|^SPF_dns_exim_new|spf_compile\.c)/;
next if /try option spf_smtp_comment_template$/;
# Not all platforms have sendfile support
next if /^(ppppp |\d+ )?setsockopt FASTOPEN: Protocol not available$/;
s/^(sending) \d+ (nonTFO early-data)$/$1 dd $2/;
- if (/^([0-9: ]* # possible timestamp
- Connecting\ to\ [^ ]+\ [^ ]+(\ from\ [^ ]+)?)\ \.\.\.
+ if (/^[0-9: ]* # possible timestamp
\ .*TFO\ mode\x20
(sendto,\ no\ data:\ EINPROGRESS # Linux
|connection\ attempt\ to\ [^,]+,\ 0\ data) # MacOS & no-support
$/x)
{
- $_ = $1 . " ... " . <IN>;
- s/^(.* \.\.\.) [0-9: ]*connected$/$1 connected/;
-
- if (/^Connecting to .* \.\.\. connected$/)
+ $_ = <IN>;
+ if (/^connected$/)
{
$_ .= <IN>;
- if (/^(Connecting to .* \.\.\. )connected\n\s+SMTP(\(close\)>>|\(Connection refused\)<<)$/)
+ if (/^connected\n\s+SMTP(\(close\)>>|\(Connection refused\)<<)$/)
{
- $_ = $1 . "failed: Connection refused\n" . <IN>;
- s/^(Connecting .*)\n\s+SMTP\(close\)>>$/$1/;
+ $_ = "failed: Connection refused\n" . <IN>;
+ s/^\n\s+SMTP\(close\)>>$/$1/;
}
- elsif (/^(Connecting to .* \.\.\. connected\n)read response data: size=/)
+ elsif (/^(connected\n)read response data: size=/)
{ $_ = $1; }
# Date/time in SMTP banner
}
# Specific pointer values reported for DB operations change from run to run
- s/^(\s*returned from EXIM_DBOPEN: )(0x)?[0-9a-f]+/${1}0xAAAAAAAA/;
- s/^(\s*EXIM_DBCLOSE.)(0x)?[0-9a-f]+/${1}0xAAAAAAAA/;
+ s/(returned from EXIM_DBOPEN: )(0x)?[0-9a-f]+/${1}0xAAAAAAAA/;
+ s/(EXIM_DBCLOSE.)(0x)?[0-9a-f]+/${1}0xAAAAAAAA/;
# Platform-dependent output during MySQL startup
next if /PerconaFT file system space/;
'timeout_errno' => # actual errno differs Solaris vs. Linux
{ 'mainlog' => 's/((?:host|message) deferral .* errno) <\d+> /$1 <EEE> /' },
- 'peer_terminated_conn' => # actual error differs FreedBSD vs. Linux
+ 'peer_terminated_conn' => # actual error differs FreedBS/Solaris vs. Linux
{ 'stderr' => 's/^( SMTP\()Connection reset by peer(\)<<)$/$1closed$2/' },
'perl_variants' => # result of hash-in-scalar-context changed from bucket-fill to keycount
###################
# The "dbmbuild" command runs exim_dbmbuild. This is used both to test the
-# utility and to make DBM files for testing DBM lookups.
+# utility and to make hintsdb files for testing hintsdb lookups.
if (/^dbmbuild\s+(\S+)\s+(\S+)/)
{
# The "dump" command runs exim_dumpdb. On different systems, the output for
# some types of dump may appear in a different order because it's just hauled
-# out of the DBM file. We can solve this by sorting. Ignore the leading
+# out of the hintsdb file. We can solve this by sorting. Ignore the leading
# date/time, as it will be flattened later during munging.
if (/^dump\s+(\S+)/)
sub check_running_dovecot
{
-system('dovecot --version >/dev/null');
+system('dovecot --version >/dev/null 2>&1');
if ($? == 0)
{
print "Dovecot appears to be available\n";
}
elsif (/^Support for: (.*)/)
- {
+ { # Compile-time features - exim -bV
print;
@temp = split /(\s+)/, $1;
push(@temp, ' ');
%parm_support = @temp;
}
- elsif (/^Lookups \(built-in\): (.*)/)
+ elsif (/^Lookups \((?:built-in|dynamic)\): ?(.*)/)
{
print;
@temp = split /(\s+)/, $1;
push(@temp, ' ');
- %parm_lookups = @temp;
+ my %temp_lookups = @temp;
+ @parm_lookups{keys %temp_lookups} = values %temp_lookups;
}
- elsif (/^Authenticators: (.*)/)
+ elsif (/^Authenticators \((?:built-in|dynamic)\): ?(.*)/)
{
print;
@temp = split /(\s+)/, $1;
push(@temp, ' ');
- %parm_authenticators = @temp;
+ my %temp_auths= @temp;
+ @parm_authenticators{keys %temp_auths} = values %temp_auths;
}
- elsif (/^Routers: (.*)/)
+ elsif (/^Routers \((?:built-in|dynamic)\): ?(.*)/)
{
print;
@temp = split /(\s+)/, $1;
push(@temp, ' ');
- %parm_routers = @temp;
+ my %temp_routers = @temp;
+ @parm_routers{keys %temp_routers} = values %temp_routers;
}
# Some transports have options, e.g. appendfile/maildir. For those, ensure
# that the basic transport name is set, and then the name with each of the
# options.
- elsif (/^Transports: (.*)/)
+ elsif (/^Transports \((?:built-in|dynamic)\): (.*)/)
{
print;
@temp = split /(\s+)/, $1;
my($i,$k);
push(@temp, ' ');
- %parm_transports = @temp;
+ my %temp_transports = @temp;
+ @parm_transports{keys %temp_transports} = values %temp_transports;
+
foreach $k (keys %parm_transports)
{
if ($k =~ "/")
"sudo chgrp $parm_eximgroup eximdir/exim_exim;" .
"sudo chmod 06755 eximdir/exim_exim");
+# Copy any libraries that were built for dynamic load
+# Currently this is only for lookup methods
+
+($parm_exim_dir) = $parm_exim =~ m?^(.*)/exim?;
+
+while (my $file = glob("$parm_exim_dir/dynmodules/*.so")) {
+ my $base = basename($file);
+ cp("$file", "eximdir/");
+ system("sudo chmod 755 eximdir/$base");
+ }
+
##################################################
# Make copies of utilities we might need #
##################################################
# Certain of the tests make use of some of Exim's utilities. We do not need
# to be root to copy these.
-($parm_exim_dir) = $parm_exim =~ m?^(.*)/exim?;
-
$dbm_build_deleted = 0;
if (defined $parm_lookups{dbm} && not cp("$parm_exim_dir/exim_dbmbuild", "eximdir/exim_dbmbuild"))
{
if (!defined $parm_malware{$1}) { $wantthis = 0; last; }
}
elsif (/^(not )?feature (.*)$/)
- {
+ { #a macro name, or lack thereof - -bP macros
# move to a subroutine?
my $eximinfo = "$parm_exim -C $parm_cwd/test-config -DDIR=$parm_cwd -bP macro $2";
$next_msgid = "aX";
$next_pid = 1234;
$next_port = 1111;
+ $next_conn = 1111;
$message_skip = 0;
$msglog_skip = 0;
$munge_skip = 0;
git://git.exim.org / exim.git / blobdiff