import std/envvars
import std/options
import std/strutils
import bindings/curl
import loader/connecterror
import loader/curlwrap
import loader/dirlist
import types/opt
import types/url
import utils/twtstr
type FtpHandle = ref object
curl: CURL
buffer: string
dirmode: bool
base: string
path: string
statusline: bool
proc curlWriteHeader(p: cstring, size: csize_t, nitems: csize_t,
userdata: pointer): csize_t {.cdecl.} =
var line = newString(nitems)
if nitems > 0:
prepareMutation(line)
copyMem(addr line[0], p, nitems)
let op = cast[FtpHandle](userdata)
if not op.statusline:
if line.startsWith("150") or line.startsWith("125"):
op.statusline = true
var status: clong
op.curl.getinfo(CURLINFO_RESPONSE_CODE, addr status)
stdout.write("Status: " & $status & "\n")
if op.dirmode:
stdout.write("Content-Type: text/html\n")
stdout.write("\n")
if op.dirmode:
stdout.write("""
""" & op.path & """
Index of """ & htmlEscape(op.path) & """
""")
return nitems
elif line.startsWith("530"): # login incorrect
op.statusline = true
var status: clong
op.curl.getinfo(CURLINFO_RESPONSE_CODE, addr status)
# unauthorized (shim http)
stdout.write("""
Status: 401
Content-Type: text/html
Unauthorized
""" & htmlEscape(line) & """
""")
return nitems
# From the documentation: size is always 1.
proc curlWriteBody(p: cstring, size, nmemb: csize_t, userdata: pointer):
csize_t {.cdecl.} =
let op = cast[FtpHandle](userdata)
if nmemb > 0:
if op.dirmode:
let i = op.buffer.len
op.buffer.setLen(op.buffer.len + int(nmemb))
prepareMutation(op.buffer)
copyMem(addr op.buffer[i], p, nmemb)
else:
return csize_t(stdout.writeBuffer(p, int(nmemb)))
return nmemb
proc finish(op: FtpHandle) =
let op = op
var items: seq[DirlistItem]
for line in op.buffer.split('\n'):
if line.len == 0: continue
var i = 10 # permission
template skip_till_space =
while i < line.len and line[i] != ' ':
inc i
# link count
i = line.skipBlanks(i)
while i < line.len and line[i] in AsciiDigit:
inc i
# owner
i = line.skipBlanks(i)
skip_till_space
# group
i = line.skipBlanks(i)
while i < line.len and line[i] != ' ':
inc i
# size
i = line.skipBlanks(i)
var sizes = ""
while i < line.len and line[i] in AsciiDigit:
sizes &= line[i]
inc i
let nsize = parseInt64(sizes).get(-1)
# date
i = line.skipBlanks(i)
let datestarti = i
skip_till_space # m
i = line.skipBlanks(i)
skip_till_space # d
i = line.skipBlanks(i)
skip_till_space # y
let dates = line.substr(datestarti, i)
inc i
let name = line.substr(i)
if name == "." or name == "..": continue
case line[0]
of 'l': # link
let linki = name.find(" -> ")
let linkfrom = name.substr(0, linki - 1)
let linkto = name.substr(linki + 4) # you?
items.add(DirlistItem(
t: ITEM_LINK,
name: linkfrom,
modified: dates,
linkto: linkto
))
of 'd': # directory
items.add(DirlistItem(
t: ITEM_DIR,
name: name,
modified: dates
))
else: # file
items.add(DirlistItem(
t: ITEM_FILE,
name: name,
modified: dates,
nsize: int(nsize)
))
stdout.write(makeDirlist(items))
stdout.write("\n\n\n\n")
proc main() =
let curl = curl_easy_init()
doAssert curl != nil
let surl = getEnv("QUERY_STRING")
let opath = getEnv("MAPPED_URI_PATH")
let path = percentDecode(opath)
# By default, cURL CWD's into relative paths, and an extra slash is
# necessary to specify absolute paths.
# This is incredibly confusing, and probably not what the user wanted.
# So we work around it by adding the extra slash ourselves.
let hackurl = newURL(surl).get
hackurl.setPathname('/' & opath)
let csurl = hackurl.serialize()
curl.setopt(CURLOPT_URL, csurl)
let dirmode = path.len > 0 and path[^1] == '/'
let op = FtpHandle(
curl: curl,
dirmode: dirmode
)
curl.setopt(CURLOPT_HEADERDATA, op)
curl.setopt(CURLOPT_HEADERFUNCTION, curlWriteHeader)
curl.setopt(CURLOPT_WRITEDATA, op)
curl.setopt(CURLOPT_WRITEFUNCTION, curlWriteBody)
curl.setopt(CURLOPT_FTP_FILEMETHOD, CURLFTPMETHOD_SINGLECWD)
if dirmode:
op.base = surl
op.path = path
let purl = getEnv("ALL_PROXY")
if purl != "":
curl.setopt(CURLOPT_PROXY, purl)
if getEnv("REQUEST_METHOD") != "GET":
let code = $int(ERROR_INVALID_METHOD)
stdout.write("Cha-Control: ConnectionError " & $code & "\n")
return
let res = curl_easy_perform(curl)
if res != CURLE_OK:
if not op.statusline:
stdout.write("Cha-Control: ConnectionError " & $int(res) & "\n")
elif op.dirmode:
op.finish()
curl_easy_cleanup(curl)
main()