debugcommands: introduce actions to perform deterministic reads
"readavailable" is useful as a debugging device to see what data is
available on a pipe. But the mechanism isn't deterministic because
what's available on a pipe is highly conditional on timing, system
load, OS behavior, etc. This makes it not suitable for tests.
We introduce "ereadline," "read," and "eread" for performing
deterministic I/O operations (at least on blocking file descriptors).
We stop short of converting existing consumers of "readavailable"
in tests because we're working out race conditions and deadlocks
on Windows. But the goal is to eventually move tests away from
"readavailable" to these new APIs.
Differential Revision: https://phab.mercurial-scm.org/D2720
#require serve ssl
Set up SMTP server:
$ CERTSDIR="$TESTDIR/sslcerts"
$ cat "$CERTSDIR/priv.pem" "$CERTSDIR/pub.pem" >> server.pem
$ $PYTHON "$TESTDIR/dummysmtpd.py" -p $HGPORT --pid-file a.pid -d \
> --tls smtps --certificate `pwd`/server.pem
listening at localhost:$HGPORT (?)
$ cat a.pid >> $DAEMON_PIDS
Set up repository:
$ hg init t
$ cd t
$ cat <<EOF >> .hg/hgrc
> [extensions]
> patchbomb =
> [email]
> method = smtp
> [smtp]
> host = localhost
> port = $HGPORT
> tls = smtps
> EOF
$ echo a > a
$ hg commit -Ama -d '1 0'
adding a
Utility functions:
$ DISABLECACERTS=
$ try () {
> hg email $DISABLECACERTS -f quux -t foo -c bar -r tip "$@"
> }
Our test cert is not signed by a trusted CA. It should fail to verify if
we are able to load CA certs:
#if sslcontext defaultcacerts no-defaultcacertsloaded
$ try
this patch series consists of 1 patches.
(an attempt was made to load CA certificates but none were loaded; see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this error)
(?i)abort: .*?certificate.verify.failed.* (re)
[255]
#endif
#if no-sslcontext defaultcacerts
$ try
this patch series consists of 1 patches.
warning: connecting to localhost using legacy security technology (TLS 1.0); see https://mercurial-scm.org/wiki/SecureConnections for more info
(using CA certificates from *; if you see this message, your Mercurial install is not properly configured; see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this message) (glob) (?)
(?i)abort: .*?certificate.verify.failed.* (re)
[255]
#endif
#if defaultcacertsloaded
$ try
this patch series consists of 1 patches.
warning: connecting to localhost using legacy security technology (TLS 1.0); see https://mercurial-scm.org/wiki/SecureConnections for more info (?)
(using CA certificates from *; if you see this message, your Mercurial install is not properly configured; see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this message) (glob) (?)
(the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
(?i)abort: .*?certificate.verify.failed.* (re)
[255]
#endif
#if no-defaultcacerts
$ try
this patch series consists of 1 patches.
(unable to load * certificates; see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this message) (glob) (?)
abort: localhost certificate error: no certificate received
(set hostsecurity.localhost:certfingerprints=sha256:62:09:97:2f:97:60:e3:65:8f:12:5d:78:9e:35:a1:36:7a:65:4b:0e:9f:ac:db:c3:bc:6e:b6:a3:c0:16:e0:30 config setting or use --insecure to connect insecurely)
[255]
#endif
$ DISABLECACERTS="--config devel.disableloaddefaultcerts=true"
Without certificates:
$ try --debug
this patch series consists of 1 patches.
(using smtps)
sending mail: smtp host localhost, port * (glob)
warning: connecting to localhost using legacy security technology (TLS 1.0); see https://mercurial-scm.org/wiki/SecureConnections for more info (?)
(verifying remote certificate)
abort: unable to verify security of localhost (no loaded CA certificates); refusing to connect
(see https://mercurial-scm.org/wiki/SecureConnections for how to configure Mercurial to avoid this error or set hostsecurity.localhost:fingerprints=sha256:20:de:b3:ad:b4:cd:a5:42:f0:74:41:1c:a2:70:1e:da:6e:c0:5c:16:9e:e7:22:0f:f1:b7:e5:6e:e4:92:af:7e to trust this server)
[255]
With global certificates:
$ try --debug --config web.cacerts="$CERTSDIR/pub.pem"
this patch series consists of 1 patches.
(using smtps)
sending mail: smtp host localhost, port * (glob)
warning: connecting to localhost using legacy security technology (TLS 1.0); see https://mercurial-scm.org/wiki/SecureConnections for more info (?)
(verifying remote certificate)
sending [PATCH] a ...
With invalid certificates:
$ try --config web.cacerts="$CERTSDIR/pub-other.pem"
this patch series consists of 1 patches.
warning: connecting to localhost using legacy security technology (TLS 1.0); see https://mercurial-scm.org/wiki/SecureConnections for more info (?)
(the full certificate chain may not be available locally; see "hg help debugssl") (windows !)
(?i)abort: .*?certificate.verify.failed.* (re)
[255]
$ cd ..