Module: Texmailer

Defined in:
lib/texmailer/send.rb,
lib/texmailer/wapp.rb,
lib/texmailer/config.rb,
lib/texmailer/drafts.rb

Defined Under Namespace

Classes: DontCache

Instance Method Summary collapse

Instance Method Details

#discarddraft(mailid) ⇒ Object 



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# File 'lib/texmailer/drafts.rb', line 59

def discarddraft(mailid)
  svdir = $userdir + '/drafts/'+mailid
  if File.directory? svdir
    lst = Dir[svdir+'/*'];
    lst.each {|f| File.delete(f)}
    Dir.rmdir(svdir)
  end
  svdir = $userdir + '/preview/'+mailid
  if File.directory? svdir
    lst = Dir[svdir+'/*'];
    lst.each {|f| File.delete(f)}
    Dir.rmdir(svdir)
  end
  
end

#getdrafts ⇒ Object 



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# File 'lib/texmailer/drafts.rb', line 75

def getdrafts
  ids = Dir.glob($userdir + '/drafts/*',File::FNM_PATHNAME)
  s = ids.collect { |i|
    if ! File.directory? i 
      nil
    else
      mid = File.basename i
    
      mailto = File.read(i + '/mailto') if File.readable? i + '/mailto'
      drtime = File.mtime(i + '/mailto') if File.readable? i + '/mailto'
      mailto ||= ''
      mailto = '(No Recipient)' if mailto.length == 0
      drtime ||= File.mtime(i)
      
      subject = File.read(i + '/subject') if File.readable? i + '/subject'
      subject ||= ''
      subject = '(No Subject)' if subject.length == 0

      [mid,CGI.escapeHTML(mailto),CGI.escapeHTML(subject),drtime]
    end
  }
  s.compact!
  s.sort! {|a,b| b[3] <=> a[3]}
  return s
end

#getpvloc(mailid) ⇒ Object 



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# File 'lib/texmailer/drafts.rb', line 15

def getpvloc(mailid)
  pvlnk = '/preview/' + mailid + '/t.html'
  return pvlnk if File.readable? $userdir+pvlnk
  return '/blankprev.html'
end

#htm2mail(thehtml_in, thetex) ⇒ Object 



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# File 'lib/texmailer/send.rb', line 57

def htm2mail(thehtml_in,thetex)
  rstring = (0...15).map{ ('A'..'Z').to_a[rand(26)] }.join;
  rstring2 = (0...15).map{ ('A'..'Z').to_a[rand(26)] }.join;
  marker = rstring + "TEXMARKERSHOULDBEUNIQUE12375689"
  marker2 = rstring2 + "TEXMARKERSHOULDBEUNIQUE12375689"

  body =<<EOF
MIME-Version: 1.0
Content-type: multipart/mixed; boundary=#{marker}

--#{marker}
EOF
  # Everything's in the body
  thehtml_in = stripcss thehtml_in
  thehtml_out = ""

  # Find attachments
  r = /(src)="(.*?)"/
  attachs = Array.new
  mimetypes = Array.new

  cid = 0
  while (m = r.match(thehtml_in))
    thehtml_out = thehtml_out + m.pre_match
    if File.readable?(m[2]) then
      f = File.read(m[2])
      thehtml_out = thehtml_out + m[1] + "=\"cid:#{rstring}%04d\"" % cid
      attachs[cid] = [f].pack("m")
      mimetypes[cid] = 'image/' + case m[2][(m[2].rindex('.')+1)..-1]
                                  when 'gif' then 'jpeg'
                                  when 'png' then 'png'
                                  else 'jpeg'
                                  end
      cid = cid + 1
    else
      thehtml_out = thehtml_out + m[0]
    end
    thehtml_in = m.post_match
  end
  
  thehtml_out = thehtml_out + thehtml_in
  thehtml_out = [thehtml_out].pack("M")
  # Add html part
  body = body + <<EOF
Content-Type: multipart/alternative; boundary=#{marker2}

--#{marker2}
Content-Type: text/plain
Content-Transfer-Encoding: 8bit

#{thetex}
--#{marker2}
Content-Type: text/html
Content-Transfer-Encoding: quoted-printable

#{thehtml_out}
--#{marker2}--
EOF

  # Add attachments
  for i in (0..(attachs.length-1))
    cid = "<#{rstring}%04d>" % i;
    data = attachs[i]
    body = body + <<EOF2
--#{marker}
Content-Disposition: inline
Content-Type: #{mimetypes[i]}
Content-Transfer-Encoding: base64
Content-Id: #{cid}

#{data}
EOF2
  end

body = body + <<EOF3
--#{marker}--
EOF3

  return body
end

#loaddraft(mailid) ⇒ Object 



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# File 'lib/texmailer/drafts.rb', line 49

def loaddraft(mailid)
  svdir = $userdir + '/drafts/'+mailid
  a = Array.new
  ["mailto","mailcc","mailbcc","subject","body"].each { |s|
    fname = svdir+'/'+s
    a.push File.readable?(fname) ? File.read(fname) : "" 
  }
  return a[0],a[1],a[2],a[3],a[4]
end

#loadparams ⇒ Object 



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# File 'lib/texmailer/config.rb', line 3

def loadparams
  p = Hash.new
  params = [['from',0],['mailfrom', 0],['host', 0],['port', 0],['ssl', 1],['igcert', 1],['auth', 1],['user', 0],['pass', 0]]
  fnm = $userdir + '/smtp.cfg'

  if File.readable? fnm
    lns = IO.readlines(fnm)
    (1..((lns.length < params.length) ? lns.length : params.length)).each {|i| 
      p[params[i-1][0]] = lns[i-1].sub(/\n/m,'')
    }
  end
  p.inspect
  params.each { |x| p[x[0]] ||= '' }
  params.each { |x| p[x[0]] == 'false' if x[1] == 1 && p[x[0]] != 'true' }
  return p
end

#makerc ⇒ Object 



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# File 'lib/texmailer/config.rb', line 35

def makerc
  p = loadparams
  fnm = $userdir + '/msmtprc'
  File.open(fnm,'w',0600) { |f|
    f.write "account default\ntimeout 15\nauto_from off\n"
    f.write "from \"#{p["mailfrom"]}\"\n"
    f.write "host #{p["host"]}\n"
    f.write "port #{p["port"]}\n"
    f.write "auth on\nuser #{p["user"]}\npassword #{p["pass"]}\n" if p["auth"] == "true"
    if p["ssl"] == "true" then    
      f.write "tls on\n" 
      if p["igcert"] == "true" then 
        f.write "tls_certcheck off\n"
      else
        f.write "tls_certcheck on\n"
        f.write "tls_trust_file #{$basedir}/ca-bundle.crt\n"
      end
    end
  }
  return fnm
end

#msmtp(req, message) ⇒ Object 



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# File 'lib/texmailer/config.rb', line 57

def msmtp(req,message)
  fnm = makerc
  pr = loadparams
  IO.popen("msmtp -C #{fnm} -t 2> #{$userdir}/msmtplog","w") { |p|
    [ ["To:","mailto"],["CC:","mailcc"],["BCC:","mailbcc"],["Subject:","subject"] ].each { |x|
      if req[x[1]] && req[x[1]].length > 0 then
        p.write x[0] + " " + req[x[1]].gsub(/\n/m,'') + "\n"
      end
    }
    if pr["from"].length > 0 then
      p.write "From: #{pr["from"]} <#{pr["mailfrom"]}>\n"
    end
    p.write message
  }
  return true,"E-mail Sent" if $? == 0
  return false, "<pre>\n"+File.read($userdir+'/msmtplog')+"\n</pre>" if File.readable? $userdir+'/msmtplog'
  return false, 'Error running msmtp.'
end

#preview(mailid, req) ⇒ Object 



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# File 'lib/texmailer/drafts.rb', line 21

def preview(mailid,req)
  pvdir = $userdir + '/preview/' + mailid
  if ! File.directory? pvdir
    Dir.mkdir(pvdir)
  end
  
  s = <<EOF
\\documentclass{article}
\\usepackage{amsmath,amssymb}
\\setlength{\\parindent}{0in}
\\begin{document}
#{req["body"]}
\\end{document}
EOF
  File.open(pvdir + '/t.tex','w') { |f| f.write s}
  Dir.chdir(pvdir);
  
  if system('latex -interaction=nonstopmode t > ltxrun.txt 2>/dev/null')
    system('htlatex t > /dev/null 2>/dev/null')
    return true
  else
    emsg = File.read(pvdir+'/ltxrun.txt');
    s = "<html><body><h1>Latex Error</h1><br><pre>\n" + emsg + "\n</pre></body></html>";
    File.open(pvdir + '/t.html','w') {|f| f.write s}
    return false
  end
end

#savedraft(mailid, req) ⇒ Object 



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# File 'lib/texmailer/drafts.rb', line 5

def savedraft(mailid,req)
  svdir = $userdir + '/drafts/'+mailid
  if ! File.directory? svdir
    Dir.mkdir(svdir)
  end
  ["mailto","mailcc","mailbcc","subject","body"].each { |s|
    File.open(svdir+'/'+s,"w") { |f| f.write req[s] }
  }
end

#saveparams(req) ⇒ Object 



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# File 'lib/texmailer/config.rb', line 20

def saveparams req
  fnm = $userdir + '/smtp.cfg'
  params = [['from',0],['mailfrom', 0],['host', 0],['port', 0],['ssl', 1],['igcert', 1],['auth', 1],['user', 0],['pass', 0]]
  
  File.open(fnm,'w',0600) { |f|
    params.each { |x|
      d = req[x[0]] if x[1] == 0 && req[x[0]]
      d = 'true' if x[1] == 1 && req[x[0]]
      d ||= '' if x[1] == 0
      d ||= 'false'
      f.write d+"\n"
    }
  }
end

#sendmail(mailid, req) ⇒ Object 



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# File 'lib/texmailer/send.rb', line 138

def sendmail(mailid,req)
  pvdir = $userdir + '/preview/' + mailid
  if ! File.directory? pvdir
    return false,"Internal Error!"
  end
  Dir.chdir(pvdir);
  return false,"Internal Error!" if ! File.readable?(pvdir+'/t.html')
  return false,"Internal Error!" if ! File.readable?(pvdir+'/t.tex')
  html = File.read(pvdir+'/t.html')
  return true, htm2mail(html,req["body"])
end

#stripcss(html) ⇒ Object 



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# File 'lib/texmailer/send.rb', line 5

def stripcss(html)
  css = nil
  r = /\<link[^\>]*href="(.*\.css)"[\>]*\>/m
  html.gsub!(r) { |g|
    m = Regexp.last_match
    if ! File.readable? m[1]
      rep = ""
    else
      css = File.read(m[1])
      rep = <<SCPT
<style type="text/css">
#{css}
</style>
SCPT
    end
    rep
  }

  return html if ! css
  
  r = /\/\*.*?\*\//m
  css.gsub!(r,'')

  styles = Array.new
  r = /(.*?)\{(.*?)\}/
  while m = r.match(css)
    cls = m[1].strip
    
    stlf = ''
    s = m[2]
    r2 = /font.*?\:.*?\;/ 
    while m2 = r2.match(s)
      stlf = stlf + m2[0]
      s = m2.post_match
    end
    styles << [cls,stlf] if stlf.length > 0
    css = m.post_match
  end

  r = /\<(.*?)class="(.*?)"(.*?)\>/m
  html.gsub!(r) {
    m = Regexp.last_match
    clid = m[2]
    stl = ""
    styles.each { |x| stl = stl + x[1] if x[0].index(clid) }
    stl = " style=\""+stl+"\" " if stl.length > 0
    "<"+m[1]+"class=\""+m[2]+"\"" + stl + m[3]+">"
  }

  return html
end

#webapp ⇒ Object 



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# File 'lib/texmailer/wapp.rb', line 14

def webapp
  return Rack::Builder.new {
      use DontCache
      use Rack::Static, :urls => ["/preview"], :root => $userdir

      map '/' do
        run Proc.new {|env|
          location = env["PATH_INFO"]
          location = "/index.html" if location == '/'
          Process.exit!(0) if location == '/die'
          if File.file? $basedir+"/rhtml"+location then
            code = 200
            header = {"Content-Type" => "text/html"}
            req = Rack::Request.new(env)
            data = ERB.new(File.read($basedir+"/rhtml"+location)).result(binding)
            [code, header, data]
          else
            [404, {"Content-Type" => "text/plain"}, "File not found: "+location]
          end
        }
      end
    }
end