last commit of today; expanding on configuration and modules

7 files changed, 166 insertions, 22 deletions

diff --git a/configure.tcl b/configure.tcl
index 3c3a426..76fd37e 100755
--- a/configure.tcl
+++ b/configure.tcl
@@ -3,35 +3,99 @@
 namespace eval http {
     # The directory which files are searched for.
     variable srv {/home/aleksei/www/files/}
-	# hook_namespace refers to a user-created namespace.
-	# It must have some things such as
-	#  A proc 'main' which is what the server will execute to get information.
-	#  A list $targets which have all the valid targets.
-    variable hook_namespace {}
 
-	namespace eval cache {
+		namespace eval cache {
 		variable precache {
 			{/fonts/}
 		}
 	}
 
 	namespace eval module {
-		#variable directory {}
+		variable targets {};
 		source modules/template.tcl
 	}
 }
 
-
+proc temp {} {
+	# Run through and bring in all targets
+	foreach i [namespace children ::http::module] {
+		set ::http::module::targets [concat $::http::module::targets $i::targets]
+		# If there are duplicate elements, then error.
+		if [expr [llength [lsort -unique $::http::module::targets]] != [llength $::http::module::targets]] {
+			error "A duplicate target coming from $i."
+		}
+	}
+}
 
 ## Validate configuration variables.
 ## Especially file exists content
 ## Especially validate the existence of necessary components in $content
 
 
-proc validate {} {
-	# Two types of rules
-	# The VARIABLE=value
-	# For instance, SRV=/ and whatnot
-	# The @ACTION Etc
-	# For instance, @MODULE and @PRECACHE
+
+set config [open /etc/tcl-httpd.conf]
+
+
+## Configure the server, whilst verifying options.
+
+namespace eval temp {
+	set error_state 0;
+	set error_message "Invalid lines:";
+	set line_number 1;
+
+
+	namespace eval verify {
+		proc srv {s} {
+
+		}
+
+		proc module_path
+	}
+
+	namespace eval actions {		
+		proc @MODULE {v} {
+			if [info exists ::http::configure::module_path] {
+				set path [string cat $::http::configure::module_path $v ".tcl"]
+				if { [file exists $path] && [file isFile $path] } {
+					namespace eval [string cat "::http::module::" $v] {
+						source $path
+					}
+				} else {
+					error "Fatal Error: While trying to import module '$b', file $path' doesn't exist."
+				}
+			} else {
+				error "Fatal Error: Tried to import module '$b' without a module_path"
+			}
+		}
+		
+		proc @PRECACHE {a b} {
+			::http::cache::add $b
+		}
+	}
+	
+	while {[gets $config line] != -1} {
+		if [regexp {^[[:lower:]_]+=[[:alnum:][:punct:]]+$} $line] {
+			set n [string first "=" $line]
+			set a [string range start [expr n-1]]
+			set b [string range [expr n+1]   end]
+			# RUN VERIFICATION
+			namespace eval ::http::configure "variable $a $b"
+		} elseif [regexp {^@[[:upper:]]+ [[:alnum:][:punct:]]+$} $line] {
+			set n [string first " " $line]
+			set a [string range start [expr n-1]]
+			set b [string range [expr n+1]   end]
+			# PERFORM ACTION
+		} else {
+			append error_message " $line_number"
+			set error_state 1;
+		}
+		incr line_number;
+	}
+
+	if $error_state {
+		error "ERROR: There were multiple errors in your configuration.\n$error_message"
+	}
 }
+
+## Delete the namespace afterwards.
+namespace delete temp;
diff --git a/http-cache.tcl b/http-cache.tcl
index 25e5f0d..f377770 100755
--- a/http-cache.tcl
+++ b/http-cache.tcl
@@ -27,9 +27,9 @@ namespace eval cache {
 		}
     }
 
-	#TODO: Pre-cache all precache files.
-	foreach i $precache {
-		add [string cat $::http::root $i]
+	# Process the precache
+	foreach i $::http::configure::precache {
+		add [string cat $::http::configure::srv $i]
 	}
 
 }
diff --git a/http.tcl b/http.tcl
index 3995c80..7dc6dbb 100755
--- a/http.tcl
+++ b/http.tcl
@@ -40,8 +40,8 @@ namespace eval http {
 			]
     
     proc server {channel address port} {
-		variable hook_namespace;
-		variable srv;
+		#variable hook_namespace;
+		#variable srv;
 		
 		## (1) Handle first line
 		puts "(1)"
@@ -51,6 +51,7 @@ namespace eval http {
 
 		## (2) Get rest of packet.
 		set packet {}
+		
 		while { [gets $channel line] } {
 			puts $line
 			## Check if field-line is in correct form.
@@ -80,7 +81,7 @@ namespace eval http {
 		
 		## (3) Find if the file exists, or there is a hooked application.
 		# If file exists, then 200 OK!
-		set filename [string cat $srv [request_target::file $request_target]]
+		set filename [string cat $configure::srv [request_target::file $request_target]]
 		if [expr [file exists $filename] && [file isfile $filename]] {
 			respond $channel 200 $filename	
 		} elseif [expr [file exists [string cat $filename "index.html"]] && [file isfile [string cat $filename "index.html"]]] {
@@ -121,9 +122,8 @@ namespace eval http {
 	proc respond {channel status {optional {}}} {
 
 		## Import Variables
-		variable srv;
 		variable status_codes;
-		variable hook_namespace;
+		
 		## New Variables
 		variable content {};
 		variable response {};
diff --git a/modules/document-viewer.tcl b/modules/document-viewer.tcl
new file mode 100755
index 0000000..de8f0e7
--- /dev/null
+++ b/modules/document-viewer.tcl
@@ -0,0 +1,54 @@
+## Note that this code is leftover from the beginning of this project,
+##  which was originally a CGI document viewer that grew into a HTTP
+##  server instead, but I plan to implement this as a module.
+## This is not at all supposed to be used right now.
+
+variable directories {articles test-one}
+
+
+
+### Content
+
+proc run {request_target} {
+	
+}
+
+
+
+
+append http::content [html::start Lame!]
+
+## If directory is not queried,
+if { ([lsearch -exact [dict keys $query] "directory"] eq -1) || ([lsearch -exact $directories [dict get $query directory]] eq -1 )} {
+	append http::content "Utter failure."
+	append http::content [html::end]
+	http::respond
+	exit
+}
+
+set directory [dict get $query directory]
+
+
+
+## If document is not queried, or does not exist in our directory,
+set documents [exec ls -Q $directory]
+if { ([lsearch -exact [dict keys $query] "document"] eq -1) || ([lsearch -exact $documents [dict get $query document]] eq -1 ) } {
+	foreach a $documents {
+		append http::content [html::link $a "?directory=$directory&document=$a"]
+	}
+	append http::content [html::end]
+	http::respond
+	exit
+}
+
+
+
+## Open file
+set file [open "$directory/[dict get $query document]" r]
+
+## Output lines
+while {[gets $file line] != -1} {
+	append http::content "$line <br> "
+}
+
+append http::content [html::end]
diff --git a/tcl-httpd b/tcl-httpd
index ade8359..575a3fa 100755
--- a/tcl-httpd
+++ b/tcl-httpd
@@ -1,5 +1,6 @@
 #!/bin/tclsh
 
+
 source configure.tcl
 
 source http.tcl
diff --git a/tcl-httpd.conf b/tcl-httpd.conf
new file mode 100644
index 0000000..efd3030
--- /dev/null
+++ b/tcl-httpd.conf
@@ -0,0 +1,3 @@
+srv=/home/aleksei/www/files/
+@MODULE template
+@PRECACHE /style.css
diff --git a/test.tcl b/test.tcl
new file mode 100755
index 0000000..290994c
--- /dev/null
+++ b/test.tcl
@@ -0,0 +1,22 @@
+#!/bin/tclsh
+
+set tests {
+    {exec curl -i http://localhost:8000}
+    {exec curl -i http://localhost:8000/style.css}
+    {exec curl -i http://localhost:8000/index.html}
+}
+
+if [expr ($argc == 0)] {
+	set j 0;
+	foreach i $tests {
+		puts "($j) : [string range $i 13 end]"
+		incr j
+	}
+} elseif [expr ($argc == 1)] {
+	set a [lindex $argv 0];
+	if { ($a >= 0) && ($a < [llength $tests]) } {
+		puts [eval [lindex $tests $a]]
+	} else {
+		puts "Argument not in range."
+	}
+}