267 lines
8.3 KiB
Python
267 lines
8.3 KiB
Python
#!/usr/bin/python3
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#
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# Generate documentation for how this machine works by
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# parsing our bash scripts!
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import cgi, re
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import markdown
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from modgrammar import *
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def generate_documentation():
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print("""<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
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<meta name="viewport" content="width=device-width">
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<title>Build Your Own Mail Server From Scratch</title>
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css">
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<style>
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@import url(https://fonts.googleapis.com/css?family=Iceland);
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@import url(https://fonts.googleapis.com/css?family=Raleway:400,700);
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@import url(https://fonts.googleapis.com/css?family=Ubuntu:300,500);
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body {
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font-family: Raleway, sans-serif;
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font-size: 16px;
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color: #555;
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}
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h2, h3 {
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margin-bottom: 1em;
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}
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p {
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margin-bottom: 1em;
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}
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pre {
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margin: 1em 1em 1.5em 1em;
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color: black;
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}
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div.write-to {
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margin: 1em;
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border: 1px solid #999;
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}
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div.write-to p {
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padding: .5em;
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margin: 0;
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}
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div.write-to .filename {
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background-color: #EEE;
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padding: .5em;
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font-weight: bold;
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}
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div.write-to pre {
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padding: .5em;
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margin: 0;
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}
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pre.shell > div:before {
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content: "$ ";
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color: #666;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="row">
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<div class="col-xs-12">
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<h1>Build Your Own Mail Server From Scratch</h1>
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<p>Here’s how you can build your own mail server from scratch. This document is generated automatically from our setup script.</p>
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<hr>
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""")
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parser = Source.parser()
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for line in open("setup/start.sh"):
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try:
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fn = parser.parse_string(line).filename()
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except:
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continue
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if fn in ("setup/preflight.sh", "setup/questions.sh", "setup/firstuser.sh", "setup/management.sh"):
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continue
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import sys
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print(fn, file=sys.stderr)
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print(BashScript.parse(fn))
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print("""
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
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<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
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</body>
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</html>
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""")
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class HashBang(Grammar):
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grammar = (L('#!'), REST_OF_LINE, EOL)
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def value(self):
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return ""
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def strip_indent(s):
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lines = s.split("\n")
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min_indent = min(len(re.match(r"\s*", line).group(0)) for line in lines if len(line) > 0)
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lines = [line[min_indent:] for line in lines]
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return "\n".join(lines)
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class Comment(Grammar):
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grammar = ONE_OR_MORE(ZERO_OR_MORE(SPACE), L('#'), REST_OF_LINE, EOL)
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def value(self):
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if self.string.replace("#", "").strip() == "":
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return "\n"
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lines = [x[2].string for x in self[0]]
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content = "\n".join(lines)
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content = strip_indent(content)
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return markdown.markdown(content, output_format="html4") + "\n\n"
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FILENAME = WORD('a-z0-9-/.')
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class Source(Grammar):
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grammar = ((L('.') | L('source')), L(' '), FILENAME, Comment | EOL)
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def filename(self):
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return self[2].string.strip()
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def value(self):
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return BashScript.parse(self.filename())
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class CatEOF(Grammar):
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grammar = (ZERO_OR_MORE(SPACE), L('cat > '), ANY_EXCEPT(WHITESPACE), L(" <<"), OPTIONAL(SPACE), L("EOF;"), EOL, REPEAT(ANY, greedy=False), EOL, L("EOF"), EOL)
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def value(self):
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content = self[7].string
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content = re.sub(r"\\([$])", r"\1", content) # un-escape bash-escaped characters
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return "<div class='write-to'><div class='filename'>overwrite<br>" + self[2].string + "</div><pre>" + cgi.escape(content) + "</pre></div>\n"
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class HideOutput(Grammar):
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grammar = (L("hide_output "), REF("BashElement"))
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def value(self):
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return self[1].value()
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class SuppressedLine(Grammar):
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grammar = (OPTIONAL(SPACE), L("echo "), REST_OF_LINE, EOL)
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def value(self):
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if "|" in self.string or ">" in self.string:
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return "<pre class='shell'><div>" + cgi.escape(self.string.strip()) + "</div></pre>\n"
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return ""
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class EditConf(Grammar):
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grammar = (
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L('tools/editconf.py '),
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FILENAME,
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SPACE,
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OPTIONAL((LIST_OF(
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L("-w") | L("-s") | L("-c ';'"),
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sep=SPACE,
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), SPACE)),
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REST_OF_LINE,
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OPTIONAL(SPACE),
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EOL
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)
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def value(self):
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conffile = self[1]
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options = [""]
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mode = 1
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for c in self[4].string:
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if mode == 1 and c in (" ", "\t") and options[-1] != "":
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# new word
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options.append("")
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elif mode < 0:
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# escaped character
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options[-1] += c
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mode = -mode
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elif c == "\\":
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# escape next character
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mode = -mode
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elif mode == 1 and c == '"':
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mode = 2
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elif mode == 2 and c == '"':
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mode = 1
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else:
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options[-1] += c
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if options[-1] == "": options.pop(-1)
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return "<div class='write-to'><div class='filename'>additional settings for<br>" + self[1].string + "</div><pre>" + "\n".join(cgi.escape(s) for s in options) + "</pre></div>\n"
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class CaptureOutput(Grammar):
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grammar = OPTIONAL(SPACE), WORD("A-Za-z_"), L('=$('), REST_OF_LINE, L(")"), OPTIONAL(L(';')), EOL
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def value(self):
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cmd = self[3].string
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cmd = cmd.replace("; ", "\n")
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return "<div class='write-to'><div class='filename'>$" + self[1].string + "=</div><pre>" + cgi.escape(cmd) + "</pre></div>\n"
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class SedReplace(Grammar):
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grammar = OPTIONAL(SPACE), L('sed -i "s/'), OPTIONAL(L('^')), ONE_OR_MORE(WORD("-A-Za-z0-9 #=\\{};.*$_!()")), L('/'), ONE_OR_MORE(WORD("-A-Za-z0-9 #=\\{};.*$_!()")), L('/"'), SPACE, FILENAME, EOL
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def value(self):
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return "<div class='write-to'><div class='filename'>edit<br>" + self[8].string + "</div><p>replace</p><pre>" + cgi.escape(self[3].string.replace(".*", ". . .")) + "</pre><p>with</p><pre>" + cgi.escape(self[5].string.replace("\\n", "\n").replace("\\t", "\t")) + "</pre></div>\n"
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def shell_line(bash):
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return "<pre class='shell'><div>" + cgi.escape(wrap_lines(bash.strip())) + "</div></pre>\n"
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class AptGet(Grammar):
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grammar = (ZERO_OR_MORE(SPACE), L("apt_install "), REST_OF_LINE, EOL)
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def value(self):
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return shell_line("apt-get install -y " + re.sub(r"\s+", " ", self[2].string))
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class UfwAllow(Grammar):
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grammar = (ZERO_OR_MORE(SPACE), L("ufw_allow "), REST_OF_LINE, EOL)
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def value(self):
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return shell_line("ufw allow " + self[2].string)
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class RestartService(Grammar):
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grammar = (ZERO_OR_MORE(SPACE), L("restart_service "), REST_OF_LINE, EOL)
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def value(self):
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return shell_line("service " + self[2].string + " restart")
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class OtherLine(Grammar):
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grammar = (REST_OF_LINE, EOL)
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def value(self):
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if self.string.strip() == "": return ""
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return "<pre class='shell'><div>" + cgi.escape(self.string.rstrip()) + "</div></pre>\n"
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class BashElement(Grammar):
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grammar = Comment | Source | CatEOF | SuppressedLine | HideOutput | EditConf | CaptureOutput | SedReplace | AptGet | UfwAllow | RestartService | OtherLine
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def value(self):
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return self[0].value()
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class BashScript(Grammar):
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grammar = (OPTIONAL(HashBang), REPEAT(BashElement))
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def value(self):
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return [line.value() for line in self[1]]
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@staticmethod
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def parse(fn):
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if fn in ("setup/functions.sh", "/etc/mailinabox.conf"): return ""
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parser = BashScript.parser()
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string = open(fn).read()
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string = re.sub(r"\s*\\\n\s*", " ", string)
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string = re.sub(".* #NODOC\n", "", string)
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string = re.sub("\n\s*if .*|\n\s*fi|\n\s*else|\n\s*elif .*", "", string)
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string = re.sub("hide_output ", "", string)
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result = parser.parse_string(string)
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v = "<div class='sourcefile'><a href=\"%s\">%s</a></div>\n" % ("https://github.com/mail-in-a-box/mailinabox/tree/master/" + fn, fn)
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v += "".join(result.value())
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v = v.replace("</pre>\n<pre class='shell'>", "")
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v = re.sub("<pre>([\w\W]*?)</pre>", lambda m : "<pre>" + strip_indent(m.group(1)) + "</pre>", v)
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v = re.sub(r"\$?PRIMARY_HOSTNAME", "<b>box.yourdomain.com</b>", v)
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v = re.sub(r"\$?STORAGE_ROOT", "<code><b>/path/to/user-data</b></code>", v)
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v = v.replace("`pwd`", "<code><b>/path/to/mailinabox</b></code>")
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return v
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def wrap_lines(text, cols=60):
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ret = ""
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words = re.split("(\s+)", text)
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linelen = 0
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for w in words:
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if linelen + len(w) > cols-1:
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ret += " \\\n"
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ret += " "
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linelen = 0
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if linelen == 0 and w.strip() == "": continue
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ret += w
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linelen += len(w)
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return ret
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if __name__ == '__main__':
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generate_documentation()
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