forking cgilite into separate project

[cgilite] / cgilite.sh

diff --git a/cgilite.sh b/cgilite.sh
index c00f9e7cd930674b052e3af1d49b1ebc68562cb7..b90899344f849fb5e71f262a630ee1482e1aeadf 100755 (executable)
--- a/cgilite.sh
+++ b/cgilite.sh
@@ -22,29 +22,62 @@
 # set -o posix # ksh, not portable
 setopt -o OCTAL_ZEROES 2>&-
 
+BR="$(printf '\n')"
+CR="$(printf '\r')"
+
+if [ "$1" = '--inetd' -a -z "$REQUEST_METHOD" ]; then
+  REMOTE_ADDR="${TCPREMOTEIP:-$NCAT_REMOTE_ADDR}"
+  SERVER_NAME="${TCPLOCALIP:-$NCAT_LOCAL_ADDR}"
+  SERVER_PORT="${TCPLOCALPORT:-$NCAT_LOCAL_PORT}"
+
+  read REQUEST_METHOD REQUEST_URI SERVER_PROTOCOL
+  PATH_INFO="${REQUEST_URI%\?*}"
+  QUERY_STRING="${REQUEST_URI#*\?}"
+  cgilite_headers="$(sed -u '/^\r\?$/q')"
+
+  HTTP_CONTENT_LENGTH="$(printf %s "$cgilite_headers" |grep -oiE '^Content-Length: [0-9]+')"
+  HTTP_CONTENT_LENGTH="${HTTP_CONTENT_LENGTH#*: }"
+  HTTP_COOKIE="$(printf %s "$cgilite_headers" |grep -oiE '^Cookie: [^\r]+')"
+  HTTP_COOKIE="${HTTP_COOKIE#*: }"
+
+  export REMOTE_ADDR SERVER_NAME SERVER_PORT REQUEST_METHOD REQUEST_URI SERVER_PROTOCOL \
+         PATH_INFO QUERY_STRING HTTP_CONTENT_LENGTH HTTP_COOKIE
+
+  . "$0" |sed '1{s;^Status: ;HTTP/1.0 ;; t; iHTTP/1.0 200 OK\r
+             }'
+  exit $?
+fi
+
 if [ "$REQUEST_METHOD" = POST -a "${HTTP_CONTENT_LENGTH:=${CONTENT_LENGTH:=0}}" -gt 0 ]; then
   cgilite_post="$(head -c "$HTTP_CONTENT_LENGTH")"
 fi
 
 cgilite_count(){
   case $1 in
-    GET)  printf %s "${QUERY_STRING}";;
-    POST) printf %s "?${cgilite_post}";;
-    REF)  printf %s "?${HTTP_REFERER#*\?}";;
+    GET)  printf %s "&${QUERY_STRING}";;
+    POST) printf %s "&${cgilite_post}";;
+    REF)  printf %s "&${HTTP_REFERER#*\?}";;
   esac \
-  | grep -Eo '[&?]'"$2"'=[^&]*' \
+  | grep -Eo '&'"$2"'=[^&]*' \
   | wc -l
 }
 
 cgilite_value(){
   printf "$(
     case $1 in
-      GET)  printf %s "${QUERY_STRING}";;
-      POST) printf %s "?${cgilite_post}";;
-      REF)  printf %s "?${HTTP_REFERER#*\?}";;
+      GET)  printf %s "&${QUERY_STRING}";;
+      POST) printf %s "&${cgilite_post}";;
+      REF)  printf %s "&${HTTP_REFERER#*\?}";;
     esac \
-    | grep -Eo '[&?]'"$2"'=[^&]*' \
-    | sed -rn "${3:-1}"'{s;^[^=]+=;;; s;\+; ;g; s;\\;\\\\;g; s;%;\\x;g; p}'
+    | grep -Eo '&'"$2"'=[^&]*' \
+    | sed -rn "${3:-1}"'{s;^[^=]+=;;; s;\+; ;g; s;\\;\\\\;g;
+      # Hexadecimal { %00 - %FF } will be transformed to octal { \000 - \377 } for posix printf
+      s;%[0123].;&\\0;g; s;%[4567].;&\\1;g; s;%[89AB].;&\\2;g; s;%[CDEF].;&\\3;g;
+      s;%[048C][0-7]\\.;&0;g; s;%[048C][89A-F]\\.;&1;g; s;%[159D][0-7]\\.;&2;g; s;%[159D][89A-F]\\.;&3;g;
+      s;%[26AE][0-7]\\.;&4;g; s;%[26AE][89A-F]\\.;&5;g; s;%[37BF][0-7]\\.;&6;g; s;%[37BF][89A-F]\\.;&7;g;
+      s;%.[08](\\..);\10;g; s;%.[19](\\..);\11;g; s;%.[2A](\\..);\12;g; s;%.[3B](\\..);\13;g;
+      s;%.[4C](\\..);\14;g; s;%.[5D](\\..);\15;g; s;%.[6E](\\..);\16;g; s;%.[7F](\\..);\17;g;
+      p}'
   )"
 }
 
@@ -57,11 +90,23 @@ POST_COUNT(){ cgilite_count POST $1; }
 REF(){ cgilite_value REF $@; }
 REF_COUNT(){ cgilite_count REF $1; }
 
+HEADER(){
+  printf %s "$cgilite_headers" \
+  | sed -rn '/^'"${1}"': /{s;^[^:]+: ([^\r]+)\r?$;\1;p;q;}'
+}
+
 COOKIE(){
   printf "$(
     printf %s " ${HTTP_COOKIE}" \
     | grep -Eo '[; ]'"$1"'=[^;]*' \
-    | sed -rn "${2:-1}"'{s;^[^=]+=;;; s;\+; ;g; s;\\;\\\\;g; s;%;\\x;g; p}'
+    | sed -rn "${2:-1}"'{s;^[^=]+=;;; s;\+; ;g; s;\\;\\\\;g;
+      # Hexadecimal { %00 - %FF } will be transformed to octal { \000 - \377 } for posix printf
+      s;%[0123].;&\\0;g; s;%[4567].;&\\1;g; s;%[89AB].;&\\2;g; s;%[CDEF].;&\\3;g;
+      s;%[048C][0-7]\\.;&0;g; s;%[048C][89A-F]\\.;&1;g; s;%[159D][0-7]\\.;&2;g; s;%[159D][89A-F]\\.;&3;g;
+      s;%[26AE][0-7]\\.;&4;g; s;%[26AE][89A-F]\\.;&5;g; s;%[37BF][0-7]\\.;&6;g; s;%[37BF][89A-F]\\.;&7;g;
+      s;%.[08](\\..);\10;g; s;%.[19](\\..);\11;g; s;%.[2A](\\..);\12;g; s;%.[3B](\\..);\13;g;
+      s;%.[4C](\\..);\14;g; s;%.[5D](\\..);\15;g; s;%.[6E](\\..);\16;g; s;%.[7F](\\..);\17;g;
+      p}'
   )"
 }
 
@@ -73,12 +118,13 @@ HTML(){
   | hexdump -ve '/1 "%03o\n"' \
   | while read n; do
     case $n in
-      [01]??) printf '0000%s' $n;;
-      2??)    printf '%s' ${n#2};;
-      3[0123]?) printf '000%s' ${n#3};;
-      34?) printf '00%s' ${n#34};;
-      35?) printf '01%s' ${n#35};;
-      36?) printf '%s' ${n#36};;
+      # bitbanging octal UTF-8 chains into singular 7 digit octal numbers
+      [01]??) printf '0000%s' $n;; # 7 bit ASCII character, nothing to do
+      2??)    printf '%s' ${n#2};; # tail fragment, append 6 bit
+      3[0123]?) printf '000%s' ${n#3};; # 2 octet (11 bit) chain start
+      34?) printf '00%s' ${n#34};; # 3 octet (16 bit) chain start
+      35?) printf '01%s' ${n#35};; # 3 octet chain start, high
+      36?) printf '%s' ${n#36};;   # 4 octet (21 bit) chain start
     esac
   done \
   | sed -r 's;.{7};&\n;g;' \
@@ -111,6 +157,7 @@ SET_COOKIE(){
 }
 
 REDIRECT(){
-  printf 'Location: %s\r\n\r\n' "$*"
+  printf 'Status: 303 See Other\r\nLocation: %s\r\n\r\n' "$*"
   exit 0
 }
+