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Compared to the previous implementation based on OpenSSL, the new implementation
has these advantages:
1. Strict and reliable detection of invalid strings, including strings with
less than 4 bytes of garbage at the end;
2. Allows to use Base64 strings without '=' padding.
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This commit supports variable in the "share" option, the finding path to
file serve is the value from "share". An example:
{
"share": "/www/data/static$uri"
}
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Explicitly using the sysconf() call to obtain the minimum thread stack size
instead of the PTHREAD_STACK_MIN macro.
This closes #576 PR on GitHub.
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This commit introduces the replacement of the client address based on the value
of a specified HTTP header. This is intended for use when Unit is placed
behind a reverse proxy like nginx or a CDN.
You must specify the source addresses of the trusted proxies. This can be
accomplished with any valid IP pattern supported by Unit's match block:
["10.0.0.1", "10.4.0.0/16", "!192.168.1.1"]
The feature is configured per listener.
The client address replacement functionality only operates when there is a
source IP match and the specified header is present. Typically this would be
an 'X-Forwarded-For' header.
{
"listeners": {
"127.0.0.1:8080": {
"client_ip": {
"header": "X-Forwarded-For",
"source": [
"10.0.0.0/8"
]
},
"pass": "applications/my_app"
},
}
}
If a request occurs and Unit receives a header like below:
"X-Forwarded-For: 84.123.23.23"
By default, Unit trusts the last rightmost IP in the header, so REMOTE_ADDR
will be set to 84.123.23.23 if the connection originated from 10.0.0.0/8.
If Unit runs behind consecutive reverse proxies and receives a header similar
to the following:
"X-Forwarded-For: 84.123.23.23, 10.0.0.254"
You will need to enable "recursive" checking, which walks the header from
last address to first and chooses the first non-trusted address it finds.
{
"listeners": {
"127.0.0.1:8080": {
"client_ip": {
"header": "X-Forwarded-For",
"source": [
"10.0.0.0/8"
]
"recursive": true,
},
"pass": "applications/my_app"
},
}
}
If a connection from 10.0.0.0/8 occurs, the chain is walked. Here, 10.0.0.254
is also a trusted address so the client address will be replaced with
84.123.23.23.
If all IP addresses in the header are trusted, the client address is set to
the first address in the header:
If 10.0.0.0/8 is trusted and "X-Forwarded-For: 10.0.0.3, 10.0.0.2, 10.0.0.1",
the client address will be replaced with 10.0.0.3.
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No functional changes.
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To support TLS sessions, Unit uses the OpenSSL built-in session cache; the
cache_size option defines the number sessions to store. To disable the feather,
the option must be zero.
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This feature allows one to specify blocks of code that are called when certain
lifecycle events occur. A user configures a "hooks" property on the app
configuration that points to a script. This script will be evaluated on boot
and should contain blocks of code that will be called on specific events.
An example of configuration:
{
"type": "ruby",
"processes": 2,
"threads": 2,
"user": "vagrant",
"group": "vagrant",
"script": "config.ru",
"hooks": "hooks.rb",
"working_directory": "/home/vagrant/unit/rbhooks",
"environment": {
"GEM_HOME": "/home/vagrant/.ruby"
}
}
An example of a valid "hooks.rb" file follows:
File.write("./hooks.#{Process.pid}", "hooks evaluated")
on_worker_boot do
File.write("./worker_boot.#{Process.pid}", "worker booted")
end
on_thread_boot do
File.write("./thread_boot.#{Process.pid}.#{Thread.current.object_id}",
"thread booted")
end
on_thread_shutdown do
File.write("./thread_shutdown.#{Process.pid}.#{Thread.current.object_id}",
"thread shutdown")
end
on_worker_shutdown do
File.write("./worker_shutdown.#{Process.pid}", "worker shutdown")
end
This closes issue #535 on GitHub.
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To perform various configuration operations on SSL_CTX, OpenSSL provides
SSL_CONF_cmd(). Specifically, to configure ciphers for a listener,
"CipherString" and "Ciphersuites" file commands are used:
https://www.openssl.org/docs/man1.1.1/man3/SSL_CONF_cmd.html
This feature can be configured in the "tls/conf_commands" section.
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Support for chrooting, rejecting symlinks, and rejecting crossing mounting
points on a per-request basis during static file serving.
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The certificate is selected by matching the arriving SNI to the common name and
the alternatives names. If no certificate matches the name, the first bundle in
the array is chosen.
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Instead of PTHREAD_STACK_MIN define, NetBSD requires to get minimum stack
size using sysctl(_SC_THREAD_STACK_MIN).
This change originally proposed by Juraj Lutter <juraj@lutter.sk>.
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Previously, all requests that contained in header field names characters other
than alphanumeric, or "-", or "_" were rejected with a 400 "Bad Request" error
response.
Now, the parser allows the same set of characters as specified in RFC 7230,
including: "!", "#", "$", "%", "&", "'", "*", "+", ".", "^", "`", "|", and "~".
Header field names that contain only these characters are considered valid.
Also, there's a new option introduced: "discard_unsafe_fields". It accepts
boolean value and it is set to "true" by default.
When this option is "true", all header field names that contain characters
in valid range, but other than alphanumeric or "-" are skipped during parsing.
When the option is "false", these header fields aren't skipped.
Requests with non-valid characters in header field names according to
RFC 7230 are rejected regardless of "discard_unsafe_fields" setting.
This closes #422 issue on GitHub.
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Now users can disable the default procfs mount point
in the rootfs.
{
"isolation": {
"automount": {
"procfs": false
}
}
}
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Now users can disable the default tmpfs mount point
in the rootfs.
{
"isolation": {
"automount": {
"tmpfs": false
}
}
}
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Introducing manual protocol selection for 'universal' apps and frameworks.
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This closes #486 issue on GitHub.
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This closes #482 issue on GitHub.
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This closes #458 issue on GitHub.
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This closes #459 issue on GitHub.
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Now it is possible to specify the name of the application callable using
optional parameter 'callable'. Default value is 'application'.
This closes #290 issue on GitHub.
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Now it's possible to disable default bind mounts of
languages by setting:
{
"isolation": {
"automount": {
"language_deps": false
}
}
}
In this case, the user is responsible to provide a "rootfs"
containing the language libraries and required files for
the application.
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It's not used since cbcd76704c90.
This option is a leftover from previous IPC between router and applications
processes. It was never documented, though.
Thanks to 洪志道 (Hong Zhi Dao).
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Thanks to 洪志道 (Hong Zhi Dao).
This closes #466 issue on GitHub.
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There was an undefined behavior in the validation function, caused by testing
one character after the string if a wildcard was at the end.
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This fixes undefined behaviour due to array over-read if an unknown parameter
is specified in an uidmap, a gidmap, or a php target object.
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Thanks to 洪志道 (Hong Zhi Dao).
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This allows to specify multiple subsequent targets inside PHP applications.
For example:
{
"listeners": {
"*:80": {
"pass": "routes"
}
},
"routes": [
{
"match": {
"uri": "/info"
},
"action": {
"pass": "applications/my_app/phpinfo"
}
},
{
"match": {
"uri": "/hello"
},
"action": {
"pass": "applications/my_app/hello"
}
},
{
"action": {
"pass": "applications/my_app/rest"
}
}
],
"applications": {
"my_app": {
"type": "php",
"targets": {
"phpinfo": {
"script": "phpinfo.php",
"root": "/www/data/admin",
},
"hello": {
"script": "hello.php",
"root": "/www/data/test",
},
"rest": {
"root": "/www/data/example.com",
"index": "index.php"
},
}
}
}
}
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This is useful to escape "/" in path fragments. For example, in order
to reference the application named "foo/bar":
{
"pass": "applications/foo%2Fbar"
}
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This allows to specify redirects:
{
"action": {
"return": 301,
"location": "https://www.example.com/"
}
}
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The "return" action can be used to immediately generate a simple HTTP response
with an arbitrary status:
{
"action": {
"return": 404
}
}
This is especially useful for denying access to specific resources.
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