From dbbfbf25b528b4a8a374d1d3e38b846b97c8b399 Mon Sep 17 00:00:00 2001
From: plugd <plugd@thelambdalab.xyz>
Date: Sat, 3 Aug 2024 16:32:59 +0200
Subject: [PATCH] Draft messages.dat generation.

---
 obbs | 61 +++++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 50 insertions(+), 11 deletions(-)

diff --git a/obbs b/obbs
index bcdaa85..2a82da8 100755
--- a/obbs
+++ b/obbs
@@ -37,7 +37,7 @@ local function print_table (t, lev)
 end
 
 local function space_pad(s, n)
-   return string.sub(s,1,n) .. string.rep(" ", math.max(0,n-string.len(s)))
+   return string.rep(" ", math.max(0,n-string.len(s))) .. string.sub(s,1,n)
 end
 
 local fs = {}
@@ -54,8 +54,13 @@ function fs.mkdir(dirname)
    posix.mkdir(dirname)
 end
 
-function fs.rmdir(dirname)
-   posix.rmdir(dirname)
+function fs.rmdir(dirname, force)
+   if force then
+      for i,fname in ipairs(posix.glob(dirname .. "/*")) do
+         posix.unlink(fname)
+      end
+   end
+   assert(posix.rmdir(dirname))
 end
 
 function fs.copy(filename, destfilename)
@@ -76,6 +81,13 @@ function fs.mktempdir()
    return posix.mkdtemp("/tmp/obbs-XXXXXX")
 end
 
+--- Message parsing ---
+
+local msgs = {}
+function Message(msg)
+   msgs[msg.number] = msg
+end
+
 --- QWK formatting ---
 
 local qwk = {}
@@ -109,14 +121,17 @@ end
 function qwk.write_message (target_dir, obbs)
    local mf = assert(io.open(target_dir .. "/MESSAGES.DAT", "w"))
 
+   local pkt_msg_num = 0
+
    mf:write(space_pad("Produced by Qmail...Copyright (c) 1987 by Sparkware." ..
                       "  All Rights Reserved", 128))
 
    for cnum,cname in ipairs(obbs.conferences) do
-      for mnum,msg_fname in ipairs(fs.dir(obbs.path .. "/conferences/" .. cname)) do
-         msg = io.open(obbs.path .. "/conferences/" .. cname .. "/" .. msg_fname, "r"):read("*all")
-
-         qwk.write_message_header_block(mf, obbs, cnum, mnum, msg)
+      msgs = {}
+      dofile(obbs.path .. "/conferences/" .. cname .. ".msgs")
+      for i,msg in ipairs(msgs) do
+         pkt_msg_num = pkt_msg_num + 1
+         qwk.write_message_header_block(mf, obbs, cnum, pkt_msg_num, msg)
          qwk.write_message_blocks(mf, obbs, msg)
       end
    end
@@ -124,12 +139,36 @@ function qwk.write_message (target_dir, obbs)
    mf:close()
 end
 
-function qwk.write_message_header_block(mf, obbs, conf_num, msg)
+function qwk.write_message_header_block(mf, obbs, conf_num, pkt_msg_num, msg)
+   mf:write(" ") -- Message status flag
+   mf:write(space_pad(tostring(msg.number), 7))
+   mf:write(msg.date) -- mm-dd-yy
+   mf:write(msg.time) -- hh:mm
+   mf:write(space_pad(string.upper(msg.to), 25))
+   mf:write(space_pad(string.upper(msg.from), 25))
+   mf:write(space_pad(msg.subject, 25))
+   mf:write(string.rep(" ", 12)) -- Password (blank)
+
+   if msg.reply_to then
+      mf:write(space_pad(tostring(msg.reply_to), 8))
+   else
+      mf:write(string.rep(" ", 8))
+   end
+
+   nblocks = math.ceil(string.len(msg.text)/128) + 1
+   mf:write(space_pad(tostring(nblocks), 6)) -- number of blocks including header
 
-   
+   mf:write("\xe1") -- flag indicating message is "active" (not "to be killed")
+   mf:write(string.pack("I2",conf_num))
+   mf:write(string.pack("I2",pkt_msg_num))
+   mf:write(" ") -- No network tag-line present
 end
 
 function qwk.write_message_blocks(mf, obbs, msg)
+   mf:write(string.gsub(msg.text, "\n", "\xe3"))
+   
+   local padding = (128 - (string.len(msg.text) % 128)) % 128
+   mf:write(string.rep("\0",padding))
 end
 
 --- Commands ---
@@ -172,7 +211,7 @@ function cmd.init ()
 
    fs.mkdir(obbs.path .. "conferences")
    for i,v in ipairs(obbs.conferences) do
-      fs.mkdir(obbs.path .. "conferences/" .. v)
+      fs.touch(obbs.path .. "conferences/" .. v .. ".msgs")
    end
 
    fs.mkdir(obbs.path .. "incoming")
@@ -225,7 +264,7 @@ function cmd.pack ()
               "/outgoing/" .. obbs.bbsid ..
               ".qwk " .. target_dir)
 
-   fs.rmdir(target_dir)
+   fs.rmdir(target_dir, true)
 end
 
 -- Main
-- 
2.20.1