bibharvestadminlib.py
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bibharvestadminlib.py
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	## $Id$
	## Administrator interface for BibIndex

	## This file is part of CDS Invenio.
	## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 CERN.
	##
	## CDS Invenio is free software; you can redistribute it and/or
	## modify it under the terms of the GNU General Public License as
	## published by the Free Software Foundation; either version 2 of the
	## License, or (at your option) any later version.
	##
	## CDS Invenio is distributed in the hope that it will be useful, but
	## WITHOUT ANY WARRANTY; without even the implied warranty of
	## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	## General Public License for more details.
	##
	## You should have received a copy of the GNU General Public License
	## along with CDS Invenio; if not, write to the Free Software Foundation, Inc.,
	## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

	"""CDS Invenio Bibharvest Administrator Interface."""

	__revision__ = "$Id$"

	import re
	import os, sys, string
	import ConfigParser
	import time
	import random
	import urllib

	from httplib import InvalidURL
	from invenio.config import \
	cdslang, \
	CFG_TMPDIR, \
	CFG_VERSION, \
	weburl,\
	CFG_ETCDIR
	from invenio.bibrankadminlib import \
	write_outcome,modify_translations,\
	get_def_name,\
	get_i8n_name,\
	get_name,\
	get_rnk_nametypes,\
	get_languages,\
	check_user,\
	is_adminuser,\
	addadminbox,\
	tupletotable,\
	tupletotable_onlyselected,\
	addcheckboxes,\
	createhiddenform
	from invenio.dbquery import run_sql
	from invenio.webpage import page, pageheaderonly, pagefooteronly, adderrorbox
	from invenio.webuser import getUid, get_email

	import invenio.template
	bibharvest_templates = invenio.template.load('bibharvest')

	tmppath = CFG_TMPDIR + '/bibharvestadmin.' + str(os.getpid())
	guideurl = "help/admin/bibharvest-admin-guide"

	freqs = [[0, "never"], [24, "daily"], [168, "weekly"], [720, "monthly"] ]
	posts = [["h", "harvest only (h)"], ["h-c", "harvest and convert (h-c)"], ["h-u", "harvest and upload (h-u)"], ["h-c-u", "harvest, convert and upload (h-c-u)"], ["h-c-f-u", "harvest, convert, filter, upload (h-c-f-u)"]]
	dates = [[0, "from beginning"], [1, "from today"]]

	def getnavtrail(previous = ''):
	"""Get the navtrail"""
	return bibharvest_templates.tmpl_getnavtrail(previous = previous, ln = cdslang)

	def perform_request_index(ln=cdslang):
	"""start area for administering harvesting from OAI repositories"""

	titlebar = bibharvest_templates.tmpl_draw_titlebar(ln = cdslang, weburl = weburl, title = "Overview of sources", guideurl = guideurl, extraname = "add new OAI source" , extraurl = "admin/bibharvest/bibharvestadmin.py/addsource" )
	titlebar2 = bibharvest_templates.tmpl_draw_titlebar(ln = cdslang, weburl = weburl, title = "Harvesting status", guideurl = guideurl)
	header = ['name', 'baseURL', 'metadataprefix', 'frequency', 'bibconvertfile', 'postprocess', 'actions']
	header2 = ['name', 'last update']
	oai_src = get_oai_src()
	upd_status = get_update_status()

	sources = []
	for (oai_src_id,oai_src_name,oai_src_baseurl,oai_src_prefix,oai_src_frequency,oai_src_config,oai_src_post,oai_src_bibfilter,oai_src_setspecs) in oai_src:
	namelinked_args = []
	namelinked_args.append(["oai_src_id", str(oai_src_id)])
	namelinked_args.append(["ln", ln])
	namelinked = bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/editsource", title = oai_src_name, args = namelinked_args)
	freq = "Not Set"
	if oai_src_frequency==0: freq = "never"
	elif oai_src_frequency==24: freq = "daily"
	elif oai_src_frequency==168: freq = "weekly"
	elif oai_src_frequency==720: freq = "monthly"
	editACTION = bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/editsource", title = "edit", args = namelinked_args)
	delACTION = bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/delsource", title = "delete", args = namelinked_args)
	action = editACTION + " / " + delACTION
	sources.append([namelinked,oai_src_baseurl,oai_src_prefix,freq,oai_src_config,oai_src_post, action])

	updates = []
	for (upd_name, upd_status) in upd_status:
	if not upd_status:
	upd_status = bibharvest_templates.tmpl_print_warning(cdslang, "Never harvested")
	else: #cut away leading zeros
	upd_status = re.sub(r'\.[0-9]+$', '', str(upd_status))
	updates.append([upd_name, upd_status])

	(schtime, schstatus) = get_next_schedule()
	if schtime:
	schtime = re.sub(r'\.[0-9]+$', '', str(schtime))

	output = titlebar
	output += bibharvest_templates.tmpl_output_numbersources(cdslang, get_tot_oai_src())
	output += tupletotable(header=header, tuple=sources)
	output += bibharvest_templates.tmpl_print_brs(cdslang, 2)
	output += titlebar2
	output += bibharvest_templates.tmpl_output_schedule(cdslang, schtime, str(schstatus))
	output += tupletotable(header=header2, tuple=updates)

	return output

	def perform_request_editsource(oai_src_id=None, oai_src_name='', oai_src_baseurl='', oai_src_prefix='', oai_src_frequency='', oai_src_config='', oai_src_post='',ln=cdslang, confirm=-1, oai_src_sets=[], oai_src_bibfilter=''):
	"""creates html form to edit a OAI source. this method is calling other methods which again is calling this and sending back the output of the method.
	confirm - determines the validation status of the data input into the form"""

	if oai_src_id is None:
	return "No OAI source ID selected."

	output = ""
	subtitle = bibharvest_templates.tmpl_draw_subtitle(ln = cdslang, weburl = weburl, title = "edit source", subtitle = "Edit OAI source", guideurl = guideurl)

	if confirm in [-1, "-1"]:
	oai_src = get_oai_src(oai_src_id)
	oai_src_name = oai_src[0][1]
	oai_src_baseurl = oai_src[0][2]
	oai_src_prefix = oai_src[0][3]
	oai_src_frequency = oai_src[0][4]
	oai_src_config = oai_src[0][5]
	oai_src_post = oai_src[0][6]
	oai_src_sets = oai_src[0][7].split()
	oai_src_bibfilter = oai_src[0][8]

	text = bibharvest_templates.tmpl_print_brs(cdslang, 1)
	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang, title = "Source name", name = "oai_src_name", value = oai_src_name)
	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang, title = "Base URL", name = "oai_src_baseurl", value = oai_src_baseurl)

	sets = findSets(oai_src_baseurl)
	if sets:
	# Show available sets to users
	sets_specs = [set[0] for set in sets]
	sets_names = [set[1] for set in sets]
	sets_labels = [((set[1] and set[0]+' ('+set[1]+')') or set[0]) \
	for set in sets]
	sets_states = [ ((set[0] in oai_src_sets and 1) or 0) for set in sets]
	text += bibharvest_templates.tmpl_admin_checkboxes(ln=cdslang,
	title="Sets",
	name="oai_src_sets",
	values=sets_specs,
	labels=sets_labels,
	states=sets_states)
	else:
	# Let user specify sets in free textbox
	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang,
	title = "Sets",
	name='oai_src_sets',
	value=' '.join(oai_src_sets))

	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang, title = "Metadata prefix", name = "oai_src_prefix", value = oai_src_prefix)
	text += bibharvest_templates.tmpl_admin_w200_select(ln = cdslang, title = "Frequency", name = "oai_src_frequency", valuenil = "- select frequency -" , values = freqs, lastval = oai_src_frequency)
	text += bibharvest_templates.tmpl_admin_w200_select(ln = cdslang, title = "Postprocess", name = "oai_src_post", valuenil = "- select mode -" , values = posts, lastval = oai_src_post)
	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang, title = "BibConvert configuration file (if needed by postprocess)", name = "oai_src_config", value = oai_src_config)
	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang, title = "BibFilter program (if needed by postprocess)", name = "oai_src_bibfilter", value = oai_src_bibfilter)
	text += bibharvest_templates.tmpl_print_brs(cdslang, 2)

	output += createhiddenform(action="editsource#1",
	text=text,
	button="Modify",
	oai_src_id=oai_src_id,
	ln=ln,
	confirm=1)

	if confirm in [1, "1"] and not oai_src_name:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please enter a name for the source.")
	elif confirm in [1, "1"] and not oai_src_prefix:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please enter a metadata prefix.")
	elif confirm in [1, "1"] and not oai_src_baseurl:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please enter a base url.")
	elif confirm in [1, "1"] and not oai_src_frequency:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please choose a frequency of harvesting")
	elif confirm in [1, "1"] and not oai_src_post:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please choose a postprocess mode")
	elif confirm in [1, "1"] and oai_src_post.startswith("h-c") and (not oai_src_config or validatefile(oai_src_config)!=0):
	output += bibharvest_templates.tmpl_print_info(cdslang, "You selected a postprocess mode which involves conversion.")
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please enter a valid name of or a full path to a BibConvert config file or change postprocess mode.")
	elif oai_src_id > -1 and confirm in [1, "1"]:
	if not oai_src_frequency:
	oai_src_frequency = 0
	if not oai_src_config:
	oai_src_config = "NULL"
	if not oai_src_post:
	oai_src_post = "h"
	res = modify_oai_src(oai_src_id, oai_src_name, oai_src_baseurl, oai_src_prefix, oai_src_frequency, oai_src_config, oai_src_post, oai_src_sets, oai_src_bibfilter)
	output += write_outcome(res)

	lnargs = [["ln", ln]]
	output += bibharvest_templates.tmpl_print_brs(cdslang, 2)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/index", title = "Go back to the OAI sources overview", args = lnargs )

	body = [output]

	return addadminbox(subtitle, body)

	def perform_request_addsource(oai_src_name=None, oai_src_baseurl='', oai_src_prefix='', oai_src_frequency='', oai_src_lastrun='', oai_src_config='', oai_src_post='', ln=cdslang, confirm=-1, oai_src_sets=[], oai_src_bibfilter=''):
	"""creates html form to add a new source"""

	if oai_src_name is None:
	return "No OAI source name selected."

	subtitle = bibharvest_templates.tmpl_draw_subtitle(ln=cdslang,
	weburl=weburl,
	title="add source",
	subtitle="Add new OAI source",
	guideurl=guideurl)
	output = ""

	if confirm <= -1:
	text = bibharvest_templates.tmpl_print_brs(cdslang, 1)
	text += bibharvest_templates.tmpl_admin_w200_text(ln=cdslang,
	title="Enter the base url",
	name="oai_src_baseurl",
	value=oai_src_baseurl+'http://')
	output = createhiddenform(action="addsource",
	text=text,
	ln=ln,
	button="Validate",
	confirm=0)

	if (confirm not in ["-1", -1] and validate(oai_src_baseurl)[0] == 0) or \
	confirm in ["1", 1]:
	output += bibharvest_templates.tmpl_output_validate_info(cdslang, 0, str(oai_src_baseurl))
	output += bibharvest_templates.tmpl_print_brs(cdslang, 2)
	text = bibharvest_templates.tmpl_admin_w200_text(ln=cdslang,
	title="Source name",
	name="oai_src_name",
	value=oai_src_name)

	metadatas = findMetadataFormats(oai_src_baseurl)
	if metadatas:
	# Show available metadata to user
	prefixes = []
	for value in metadatas:
	prefixes.append([value, str(value)])
	text += bibharvest_templates.tmpl_admin_w200_select(ln=cdslang,
	title="Metadata prefix",
	name="oai_src_prefix",
	valuenil="- select prefix -" ,
	values=prefixes,
	lastval=oai_src_prefix)
	else:
	# Let user specify prefix in free textbox
	text += bibharvest_templates.tmpl_admin_w200_text(ln=cdslang,
	title="Metadata prefix",
	name="oai_src_prefix",
	value=oai_src_prefix)

	sets = findSets(oai_src_baseurl)
	if sets:
	# Show available sets to users
	sets_specs = [set[0] for set in sets]
	sets_names = [set[1] for set in sets]
	sets_labels = [((set[1] and set[0]+' ('+set[1]+')') or set[0]) \
	for set in sets]
	sets_states = [ ((set[0] in oai_src_sets and 1) or 0) \
	for set in sets]
	text += bibharvest_templates.tmpl_admin_checkboxes(ln=cdslang,
	title="Sets",
	name="oai_src_sets",
	values=sets_specs,
	labels=sets_labels,
	states=sets_states)
	else:
	# Let user specify sets in free textbox
	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang,
	title = "Sets",
	name='oai_src_sets',
	value=' '.join(oai_src_sets))

	text += bibharvest_templates.tmpl_admin_w200_select(ln = cdslang, title = "Frequency", name = "oai_src_frequency", valuenil = "- select frequency -" , values = freqs, lastval = oai_src_frequency)
	text += bibharvest_templates.tmpl_admin_w200_select(ln = cdslang, title = "Starting date", name = "oai_src_lastrun", valuenil = "- select a date -" , values = dates, lastval = oai_src_lastrun)
	text += bibharvest_templates.tmpl_admin_w200_select(ln = cdslang, title = "Postprocess", name = "oai_src_post", valuenil = "- select mode -" , values = posts, lastval = oai_src_post)
	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang, title = "BibConvert configuration file (if needed by postprocess)", name = "oai_src_config", value = oai_src_config)
	text += bibharvest_templates.tmpl_admin_w200_text(ln = cdslang, title = "BibFilter program (if needed by postprocess)", name = "oai_src_bibfilter", value = oai_src_bibfilter)
	text += bibharvest_templates.tmpl_print_brs(cdslang, 2)


	output += createhiddenform(action="addsource#1",
	text=text,
	button="Add OAI Source",
	oai_src_baseurl=oai_src_baseurl,
	ln=ln,
	confirm=1)
	elif confirm in ["0", 0] and validate(oai_src_baseurl)[0] > 0:
	# Could not perform first url validation
	lnargs = [["ln", ln]]
	output += bibharvest_templates.tmpl_output_validate_info(cdslang, 1, str(oai_src_baseurl))
	output += bibharvest_templates.tmpl_print_brs(cdslang, 2)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/addsource", title = "Try again with another url", args = [])
	output += """ or """
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/addsource", title = "Continue anyway", args = [['oai_src_baseurl', urllib.urlencode({'':oai_src_baseurl})[1:]], ['confirm', '1']])
	output += bibharvest_templates.tmpl_print_brs(cdslang, 1)
	output += """or"""
	output += bibharvest_templates.tmpl_print_brs(cdslang, 1)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/index", title = "Go back to the OAI sources overview", args = lnargs)
	elif confirm not in ["-1", -1] and validate(oai_src_baseurl)[0] > 0:
	lnargs = [["ln", ln]]
	output += bibharvest_templates.tmpl_output_validate_info(cdslang, 1, str(oai_src_baseurl))
	output += bibharvest_templates.tmpl_print_brs(cdslang, 2)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/addsource", title = "Try again", args = [])
	output += bibharvest_templates.tmpl_print_brs(cdslang, 1)
	output += """or"""
	output += bibharvest_templates.tmpl_print_brs(cdslang, 1)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/index", title = "Go back to the OAI sources overview", args = lnargs)

	elif confirm not in ["-1", -1]:
	lnargs = [["ln", ln]]
	output += bibharvest_templates.tmpl_output_error_info(cdslang, str(oai_src_baseurl), validate(oai_src_baseurl)[1])
	output += bibharvest_templates.tmpl_print_brs(cdslang, 2)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/addsource", title = "Try again", args = [])
	output += bibharvest_templates.tmpl_print_brs(cdslang, 1)
	output += """or"""
	output += bibharvest_templates.tmpl_print_brs(cdslang, 1)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/index", title = "Go back to the OAI sources overview", args = lnargs)



	if confirm in [1, "1"] and not oai_src_name:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please enter a name for the source.")
	if confirm in [1, "1"] and not oai_src_prefix:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please enter a metadata prefix.")
	if confirm in [1, "1"] and not oai_src_frequency:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please choose a frequency of harvesting")
	if confirm in [1, "1"] and not oai_src_lastrun:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please choose the harvesting starting date")
	if confirm in [1, "1"] and not oai_src_post:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please choose a postprocess mode")
	if confirm in [1, "1"] and oai_src_post.startswith("h-c") and (not oai_src_config or validatefile(oai_src_config)!=0):
	output += bibharvest_templates.tmpl_print_info(cdslang, "You selected a postprocess mode which involves conversion.")
	output += bibharvest_templates.tmpl_print_info(cdslang, "Please enter a valid name of or a full path to a BibConvert config file or change postprocess mode.")
	elif oai_src_name and confirm in [1, "1"]:
	if not oai_src_frequency:
	oai_src_frequency = 0
	if not oai_src_lastrun:
	oai_src_lastrun = 1
	if not oai_src_config:
	oai_src_config = "NULL"
	if not oai_src_post:
	oai_src_post = "h"

	res = add_oai_src(oai_src_name, oai_src_baseurl, oai_src_prefix, oai_src_frequency, oai_src_lastrun, oai_src_config, oai_src_post, oai_src_sets, oai_src_bibfilter)
	output += write_outcome(res)

	lnargs = [["ln", ln]]
	output += bibharvest_templates.tmpl_print_brs(cdslang, 2)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/index", title = "Go back to the OAI sources overview", args = lnargs )

	body = [output]

	return addadminbox(subtitle, body)

	def perform_request_delsource(oai_src_id=None, ln=cdslang, callback='yes', confirm=0):
	"""creates html form to delete a source
	"""

	output = ""
	subtitle = ""

	if oai_src_id:
	oai_src = get_oai_src(oai_src_id)
	namesrc = (oai_src[0][1])
	pagetitle = """Delete OAI source: %s""" % namesrc
	subtitle = bibharvest_templates.tmpl_draw_subtitle(ln = cdslang, weburl = weburl, title = "delete source", subtitle = pagetitle, guideurl = guideurl)
	output = ""

	if confirm in ["0", 0]:
	if oai_src:
	question = """Do you want to delete the OAI source '%s' and all its definitions?""" % namesrc
	text = bibharvest_templates.tmpl_print_info(cdslang, question)
	text += bibharvest_templates.tmpl_print_brs(cdslang, 3)
	output += createhiddenform(action="delsource#5",
	text=text,
	button="Confirm",
	oai_src_id=oai_src_id,
	confirm=1)
	else:
	return bibharvest_templates.tmpl_print_info(cdslang, "Source specified does not exist.")
	elif confirm in ["1", 1]:
	res = delete_oai_src(oai_src_id)
	if res[0] == 1:
	output += bibharvest_templates.tmpl_print_info(cdslang, "Source removed.")
	output += bibharvest_templates.tmpl_print_brs(cdslang, 1)
	output += write_outcome(res)
	else:
	output += write_outcome(res)

	lnargs = [["ln", ln]]
	output += bibharvest_templates.tmpl_print_brs(cdslang, 2)
	output += bibharvest_templates.tmpl_link_with_args(ln = cdslang, weburl = weburl, funcurl = "admin/bibharvest/bibharvestadmin.py/index", title = "Go back to the OAI sources overview", args = lnargs )

	body = [output]

	return addadminbox(subtitle, body)


	##################################################################
	### Here the functions to retrieve, modify, delete and add sources
	##################################################################

	def get_oai_src(oai_src_id=''):
	"""Returns a row parameters for a given id"""
	sql = "SELECT id,name,baseurl,metadataprefix,frequency,bibconvertcfgfile,postprocess,setspecs,bibfilterprogram FROM oaiHARVEST"
	try:
	if oai_src_id:
	sql += " WHERE id=%s" % oai_src_id
	sql += " ORDER BY id asc"
	res = run_sql(sql)
	return res
	except StandardError, e:
	return ""

	def modify_oai_src(oai_src_id, oai_src_name, oai_src_baseurl, oai_src_prefix, oai_src_frequency, oai_src_config, oai_src_post, oai_src_sets=[], oai_src_bibfilter=''):
	"""Modifies a row's parameters"""
	try:
	res = run_sql("UPDATE oaiHARVEST SET name=%s WHERE id=%s", (oai_src_name, oai_src_id))
	res = run_sql("UPDATE oaiHARVEST SET baseurl=%s WHERE id=%s", (oai_src_baseurl, oai_src_id))
	res = run_sql("UPDATE oaiHARVEST SET metadataprefix=%s WHERE id=%s", (oai_src_prefix, oai_src_id))
	res = run_sql("UPDATE oaiHARVEST SET frequency=%s WHERE id=%s", (oai_src_frequency, oai_src_id))
	res = run_sql("UPDATE oaiHARVEST SET bibconvertcfgfile=%s WHERE id=%s", (oai_src_config, oai_src_id))
	res = run_sql("UPDATE oaiHARVEST SET postprocess=%s WHERE id=%s", (oai_src_post, oai_src_id))
	res = run_sql("UPDATE oaiHARVEST SET setspecs=%s WHERE id=%s", (' '.join(oai_src_sets), oai_src_id))
	res = run_sql("UPDATE oaiHARVEST SET bibfilterprogram=%s WHERE id=%s", (oai_src_bibfilter, oai_src_id))
	return (1, "")
	except StandardError, e:
	return (0, e)

	def add_oai_src(oai_src_name, oai_src_baseurl, oai_src_prefix, oai_src_frequency, oai_src_lastrun, oai_src_config, oai_src_post, oai_src_sets=[], oai_src_bibfilter=''):
	"""Adds a new row to the database with the given parameters"""
	try:
	if oai_src_lastrun in [0, "0"]: lastrun_mode = 'NULL'
	else:
	lastrun_mode = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
	# lastrun_mode = "'"+lastrun_mode+"'"
	sql = "INSERT INTO oaiHARVEST (id, baseurl, metadataprefix, arguments, comment, bibconvertcfgfile, name, lastrun, frequency, postprocess, bibfilterprogram, setspecs) VALUES (0, %s, %s, NULL, NULL, %s, %s, %s, %s, %s, %s, %s)", (oai_src_baseurl, oai_src_prefix, oai_src_config, oai_src_name, lastrun_mode, oai_src_frequency, oai_src_post, oai_src_bibfilter, " ".join(oai_src_sets))
	res = run_sql(sql)
	return (1, "")
	except StandardError, e:
	return (0, e)

	def delete_oai_src(oai_src_id):
	"""Deletes a row from the database according to its id"""
	try:
	res = run_sql("DELETE FROM oaiHARVEST WHERE id=%s" % oai_src_id)
	return (1, "")
	except StandardError, e:
	return (0, e)

	def get_tot_oai_src():
	"""Returns number of rows in the database"""
	try:
	sql = "SELECT COUNT(*) FROM oaiHARVEST"
	res = run_sql(sql)
	return res[0][0]
	except StandardError, e:
	return ""

	def get_update_status():
	"""Returns a table showing a list of all rows and their LastUpdate status"""
	try:
	sql = "SELECT name,lastrun FROM oaiHARVEST ORDER BY lastrun desc"
	res = run_sql(sql)
	return res
	except StandardError, e:
	return ""

	def get_next_schedule():
	"""Returns the next scheduled oaiharvestrun tasks"""
	try:
	sql = "SELECT runtime,status FROM schTASK WHERE proc='oaiharvest' AND runtime > now() ORDER by runtime LIMIT 1"
	res = run_sql(sql)
	if len(res)>0:
	return res[0]
	else:
	return ("", "")
	except StandardError, e:
	return ("","")


	def validate(oai_src_baseurl):
	"""This function validates a baseURL by opening its URL and 'greping' for the <OAI-PMH> and <Identify> tags:

	Codes:
	0 = okay
	1 = baseURL not valid
	2 = baseURL not found/not existing
	3 = tmp directoy is not writable
	4 = Unknown error

	Returns tuple (code, message)
	"""
	try:
	url = oai_src_baseurl + "?verb=Identify"
	urllib.urlretrieve(url, tmppath)

	# First check if we have xml oai-pmh output
	grepOUT1 = os.popen('grep -iwc "<OAI-PMH" '+tmppath).read()
	if int(grepOUT1) == 0:
	# No.. we have an http error
	return (4, os.popen('cat '+tmppath).read())

	grepOUT2 = os.popen('grep -iwc "<identify>" '+tmppath).read()
	if int(grepOUT2) > 0:
	#print "Valid!"
	return (0, '')
	else:
	#print "Not valid!"
	return (1, '')
	except IOError, (errno, strerror):
	# Quick error handling for frequent error codes.
	if errno == 13:
	return (3, "Please check permission on %s and retry" % CFG_TMPDIR)
	elif errno == 2 or errno == 'socket error':
	return (2, "Could not connect with URL %s. Check URL or retry when server is available." % url)
	return (4, strerror)
	except StandardError, e:
	return (4, "An unknown error has occured")
	except InvalidURL, e:
	return (2, "Could not connect with URL %s. Check URL or retry when server is available." % url)

	def validatefile(oai_src_config):
	"""This function checks whether the given path to text file exists or not
	0 = okay
	1 = file non existing
	"""

	CFG_BIBCONVERT_XSL_PATH = "%s%sbibconvert%sconfig" % (CFG_ETCDIR,
	os.sep,
	os.sep)
	path_to_config = (CFG_BIBCONVERT_XSL_PATH + os.sep +
	oai_src_config)
	if os.path.exists(path_to_config):
	# Try to read in config directory
	try:
	ftmp = open(path_to_config, 'r')
	cfgstr= ftmp.read()
	ftmp.close()
	if cfgstr!="":
	#print "Valid!"
	return 0
	except StandardError, e:
	pass

	# Try to read as complete path
	try:
	ftmp = open(oai_src_config, 'r')
	cfgstr= ftmp.read()
	ftmp.close()
	if cfgstr!="":
	#print "Valid!"
	return 0
	else:
	#print "Not valid!"
	return 1
	except StandardError, e:
	return 1

	return 1

	def findMetadataFormats(oai_src_baseurl):
	"""This function finds the Metadata formats offered by a OAI repository by analysing the output of verb=ListMetadataFormats"""
	formats = []
	url = oai_src_baseurl + "?verb=ListMetadataFormats"
	try:
	urllib.urlretrieve(url, tmppath)
	except IOError:
	return formats
	ftmp = open(tmppath, 'r')
	xmlstr= ftmp.read()
	ftmp.close()
	chunks = xmlstr.split('<metadataPrefix>')
	count = 0 # first chunk is invalid
	for chunk in chunks:
	if count!=0:
	formats.append(chunk.split('</metadataPrefix>')[0])
	count = count + 1
	return formats

	def findSets(oai_src_baseurl):
	"""This function finds the sets offered by a OAI repository
	by analysing the output of verb=ListSets.
	Returns list of tuples(SetSpec, SetName)"""
	url = oai_src_baseurl + "?verb=ListSets"
	sets = {}
	try:
	urllib.urlretrieve(url, tmppath)
	except IOError:
	return sets
	ftmp = open(tmppath, 'r')
	xmlstr= ftmp.read()
	ftmp.close()
	chunks = xmlstr.split('<set>')
	count = 0 # first chunk is invalid
	for chunk in chunks:
	if count!=0:
	chunks_set = chunk.split('<setSpec>')[1].split("</setSpec>")
	set_spec = chunks_set[0]
	#chunks_set[1].split('<setName>')
	check_set_2 = chunks_set[1].split("<setName>")
	set_name = None
	if len(check_set_2) > 1:
	set_name = check_set_2[1].split("</setName>")[0]
	sets[set_spec] = [set_spec, set_name]
	count = count + 1
	return sets.values()

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