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Overview
| Comment: | Started work on adding an "-autoservername" option to tls::socket which will automatically add the -servername <host> option |
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| Timelines: | family | ancestors | descendants | both | feature-0d4541b86d-autoservername |
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| SHA1: |
f0c5ec5595811a56c50910d1c1c3ef86 |
| User & Date: | rkeene 2016-12-14 06:18:05 |
Context
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2016-12-14
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| 06:27 | Updated example to include "-autoservername" check-in: 219e71c672 user: rkeene tags: feature-0d4541b86d-autoservername | |
| 06:18 | Started work on adding an "-autoservername" option to tls::socket which will automatically add the -servername <host> option check-in: f0c5ec5595 user: rkeene tags: feature-0d4541b86d-autoservername | |
| 01:10 | Minor update to the README check-in: c920627e0b user: rkeene tags: trunk | |
Changes
Changes to tls.htm.
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host port</em></a></dt>
<dt><b>tls::socket</b><em> ?-server command? ?options? port</em></dt>
<dd>This is a helper function that utilizes the underlying
commands (<strong>tls::import</strong>). It behaves
exactly the same as the native Tcl <strong>socket</strong>
command except that the options can include any of the
applicable <a href="#tls::import"><strong>tls:import</strong></a>
options.</dd>
<dt> </dt>
<dt><a name="tls::handshake"><strong>tls::handshake</strong> <em>channel</em></a></dt>
<dd>Forces handshake to take place, and returns 0 if
handshake is still in progress (non-blocking), or 1 if
the handshake was successful. If the handshake failed
this routine will throw an error.</dd>
<dt> </dt>
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host port</em></a></dt>
<dt><b>tls::socket</b><em> ?-server command? ?options? port</em></dt>
<dd>This is a helper function that utilizes the underlying
commands (<strong>tls::import</strong>). It behaves
exactly the same as the native Tcl <strong>socket</strong>
command except that the options can include any of the
applicable <a href="#tls::import"><strong>tls:import</strong></a>
options with one additional option:
<blockquote>
<dl>
<dt><strong>-autoservername</strong> <em>bool</em></dt>
<dd>Automatically send the -servername as the <em>host</em> argument
(<strong>default</strong>: <em>false</em>)</dd>
</dl>
</blockquote>
<dt> </dt>
<dt><a name="tls::handshake"><strong>tls::handshake</strong> <em>channel</em></a></dt>
<dd>Forces handshake to take place, and returns 0 if
handshake is still in progress (non-blocking), or 1 if
the handshake was successful. If the handshake failed
this routine will throw an error.</dd>
<dt> </dt>
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}
#
# Helper function - behaves exactly as the native socket command.
#
proc tls::socket {args} {
variable socketCmd
variable defaults
set idx [lsearch $args -server]
if {$idx != -1} {
set server 1
set callback [lindex $args [expr {$idx+1}]]
set args [lreplace $args $idx [expr {$idx+1}]]
set usage "wrong # args: should be \"tls::socket -server command ?options? port\""
set options "-cadir, -cafile, -certfile, -cipher, -command, -dhparams, -keyfile, -myaddr, -password, -request, -require, -servername, -ssl2, -ssl3, -tls1, -tls1.1 or -tls1.2"
} else {
set server 0
set usage "wrong # args: should be \"tls::socket ?options? host port\""
set options "-async, -cadir, -cafile, -certfile, -cipher, -command, -dhparams, -keyfile, -myaddr, -myport, -password, -request, -require, -servername, -ssl2, -ssl3, -tls1, -tls1.1 or -tls1.2"
}
set argc [llength $args]
set sopts {}
set iopts [concat [list -server $server] $defaults] ;# Import options
for {set idx 0} {$idx < $argc} {incr idx} {
set arg [lindex $args $idx]
switch -glob -- $server,$arg {
0,-async {lappend sopts $arg}
0,-myport -
*,-type -
*,-myaddr {lappend sopts $arg [lindex $args [incr idx]]}
*,-cadir -
*,-cafile -
*,-certfile -
*,-cipher -
*,-command -
*,-dhparams -
*,-keyfile -
*,-password -
*,-request -
*,-require -
*,-servername -
*,-ssl2 -
*,-ssl3 -
*,-tls1 -
*,-tls1.1 -
*,-tls1.2 {lappend iopts $arg [lindex $args [incr idx]]}
-* {return -code error "bad option \"$arg\": must be one of $options"}
default {break}
}
}
if {$server} {
if {($idx + 1) != $argc} {
return -code error $usage
}
set uid [incr ::tls::srvuid]
set port [lindex $args [expr {$argc-1}]]
................................................................................
#set sopts [linsert $sopts 0 -server $callback]
set sopts [linsert $sopts 0 -server [list tls::_accept $iopts $callback]]
#set sopts [linsert $sopts 0 -server [list tls::_accept $uid $callback]]
} else {
if {($idx + 2) != $argc} {
return -code error $usage
}
set host [lindex $args [expr {$argc-2}]]
set port [lindex $args [expr {$argc-1}]]
lappend sopts $host $port
}
#
# Create TCP/IP socket
#
set chan [eval $socketCmd $sopts]
if {!$server && [catch {
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}
#
# Helper function - behaves exactly as the native socket command.
#
proc tls::socket {args} {
variable socketCmd
variable defaults
# server,option,variable,args
set usageRules {
{0 -async sopts 0}
{* -myaddr sopts 1}
{0 -myport sopts 1}
{* -type sopts 1}
{* -cadir iopts 1}
{* -cafile iopts 1}
{* -certfile iopts 1}
{* -cipher iopts 1}
{* -command iopts 1}
{* -dhparams iopts 1}
{* -keyfile iopts 1}
{* -password iopts 1}
{* -request iopts 1}
{* -require iopts 1}
{0 -autoservername discardOpts 1}
{* -servername iopts 1}
{* -ssl2 iopts 1}
{* -ssl3 iopts 1}
{* -tls1 iopts 1}
{* -tls1.1 iopts 1}
{* -tls1.2 iopts 1}
}
set idx [lsearch $args -server]
if {$idx != -1} {
set server 1
set callback [lindex $args [expr {$idx+1}]]
set args [lreplace $args $idx [expr {$idx+1}]]
set usage "wrong # args: should be \"tls::socket -server command ?options? port\""
} else {
set server 0
set usage "wrong # args: should be \"tls::socket ?options? host port\""
}
# Create several structures from our list of options
## 1. options: a text representation of the valid options for the current
## server type
## 2. argSwitchBody: Switch body for processing arguments
set options [list]
set argSwitchBody [list]
foreach usageRule $usageRules {
set ruleServer [lindex $usageRule 0]
set ruleOption [lindex $usageRule 1]
set ruleVarToUpdate [lindex $usageRule 2]
set ruleVarArgsToConsume [lindex $usageRule 3]
if {![string match $ruleServer $server]} {
continue
}
lappend options $ruleOption
switch -- $ruleVarArgsToConsume {
0 { set argToExecute {lappend @[email protected] $arg; set argsArray($arg) true} }
1 { set argToExecute {set argValue [lindex $args [incr idx]]; lappend @[email protected] $arg $argValue; set argsArray($arg) $argValue} }
default { return -code error "Internal argument construction error" }
}
lappend argSwitchBody $ruleServer,$ruleOption [string map [list @[email protected] $ruleVarToUpdate] $argToExecute]
}
set options [join $options {, }]
lappend argSwitchBody {*,-*} {return -code error "bad option \"$arg\": must be one of $options"}
lappend argSwitchBody default break
# Combine defaults with current options
set args [concat $defaults $args]
set argc [llength $args]
set sopts {}
set iopts [list -server $server]
array set argsArray [list]
for {set idx 0} {$idx < $argc} {incr idx} {
set arg [lindex $args $idx]
switch -glob -- $server,$arg $argSwitchBody
}
if {$server} {
if {($idx + 1) != $argc} {
return -code error $usage
}
set uid [incr ::tls::srvuid]
set port [lindex $args [expr {$argc-1}]]
................................................................................
#set sopts [linsert $sopts 0 -server $callback]
set sopts [linsert $sopts 0 -server [list tls::_accept $iopts $callback]]
#set sopts [linsert $sopts 0 -server [list tls::_accept $uid $callback]]
} else {
if {($idx + 2) != $argc} {
return -code error $usage
}
set host [lindex $args [expr {$argc-2}]]
set port [lindex $args [expr {$argc-1}]]
# If an "-autoservername" option is found, honor it
if {[info exists argsArray(-autoservername)] && $argsArray(-autoservername)} {
if {![info exists argsArray(-servername)]} {
set argsArray(-servername) $host
lappend iopts -servername $host
}
}
lappend sopts $host $port
}
#
# Create TCP/IP socket
#
set chan [eval $socketCmd $sopts]
if {!$server && [catch {
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