import os,sys
import string
from mod_python import apache, util
import subprocess
import time
from syslog import *

# baughj, 2007.07.06 - add logging, usage of subprocess
# baughj, 2007.07.16 - make sure to chgrp/chmod checked out directory so that
# it can be updated by wwwcvs user later - why doesn't everything (cron job,
# etc) run as one user?

# add new 'translation' type for translation team webspace, see RT #348523.
# ward, 2008-08-18

CHECKOUT = "/var/www/savannah-checkouts/"
LOGFILE = "/var/log/wwwcvs/new-savannah-project.log"

def updatewww ():
    os.chdir ('/var/www/')
    os.environ["CVS_RSH"] = 'ssh'

    syslog(LOG_INFO,"Working...")
    try:
        cvs = subprocess.Popen(['/usr/bin/sudo','-u','wwwcvs','/usr/bin/cvs',"update", "-Pd", '.'],
                               stdout=subprocess.PIPE,
                               close_fds=True)
    except Exception, e:
        syslog(LOG_ERR,"Unknown exception occured in CVS update of /var/www")
        syslog(LOG_ERR,"Exception was: %s" % e)
        req.content_type = 'text/html'
        req.send_http_header()
        req.write("CVS update failed: %s" % e)
        return apache.OK
                                    
    # This is a blocking read
    syslog(LOG_INFO, cvs.stdout.read())

def handler (req):
    openlog('savannah-cvs-commit', 0, LOG_LOCAL6)
    syslog(LOG_INFO, "Request received...")
    form = util.FieldStorage (req)

    req.content_type = 'text/html'
    req.send_http_header ()

    type = None
    project = None
    if form.has_key('type'):
        type = form['type']
    if form.has_key('project'):
        project = form['project']

    syslog(LOG_INFO, "type: %s" % type)
    syslog(LOG_INFO, "project: %s" % project)

    if (type == 'www'):
        syslog(LOG_INFO, "/var/www: Beginning checkout")
        updatewww()
        req.content_type = 'text/html'
        req.send_http_header ()
        syslog(LOG_INFO, "/var/www: checkout done")
        return apache.OK 

    if not (type and project):
        syslog(LOG_ERR, 'Error: missing type or project. Aborting.')
        return apache.HTTP_NOT_FOUND

    if (type != 'gnu') and (type != 'non-gnu') and (type != 'translations'):
        syslog(LOG_ERR, "Error: Type unknown, was %s. Aborting." % type)
        return apache.HTTP_NOT_FOUND
    
    if string.find (project, "/") != -1:
        syslog(LOG_ERR, "Error: / found in project name %s" % project)
        return apache.HTTP_NOT_FOUND

    syslog(LOG_INFO, "New/update project request: %s (%s)" % (type,project))

    os.chdir (CHECKOUT + type)
    os.environ["CVS_RSH"] = 'ssh'

    try:
        syslog(LOG_INFO, "%s: Beginning checkout" % project)
        cvs = subprocess.Popen(['/usr/bin/sudo','-u','wwwcvs','/usr/bin/cvs',"-d",":pserver:address@hidden:/webcvs/%s" % project,
                                "checkout", "-P", project],
                               stdout=subprocess.PIPE,
                                close_fds=True)
    except Exception, msg:
        syslog(LOG_ERR, "%s: Unknown exception occured in CVS subprocess (%s)" % (project,msg))
        req.content_type = 'text/html'
        req.send_http_header()
        req.write("CVS checkout failed: %s" % msg)
        return apache.OK

    # This is a blocking read
    syslog(LOG_INFO, cvs.stdout.read())

    syslog(LOG_INFO, "%s: CVS checkout completed." % project)
    #syslog(LOG_INFO, "%s: CVS checkout completed. Fixing permissions..." % project)
    #try:
    #    retcode = subprocess.call(["/bin/chgrp", "-R", "wwwcvs",
    #                               "%s%s/%s" % (CHECKOUT, type, project)])
    #    retcode2 = subprocess.call(["/bin/chmod", "-R", "g+rw",
    #                                "%s%s/%s" % (CHECKOUT, type, project)])

    #    if (retcode, retcode2) != (0,0):            
    #        syslog(LOG_ERR, "%s: ERROR: chgrp returned %s" % (project,retcode))
    #        syslog(LOG_ERR, "%s: ERROR: chmod returned %s" % (project,retcode2))
    
    #except Exception, e:
    #    syslog(LOG_INFO, "error")
    #    syslog(LOG_INFO, "%s: ERROR: %s" % (project,e))
        
    #syslog(LOG_INFO, "%s: Permissions updated." % project)
    syslog(LOG_INFO, "%s: Complete." % project)
    req.content_type = 'text/html'
    req.send_http_header ()

    #req.write ("cvs checkout complete")

    return apache.OK