mirror of https://gitlab.com/bashrc2/epicyon
631 lines
22 KiB
Python
631 lines
22 KiB
Python
__filename__ = "shares.py"
|
||
__author__ = "Bob Mottram"
|
||
__license__ = "AGPL3+"
|
||
__version__ = "1.1.0"
|
||
__maintainer__ = "Bob Mottram"
|
||
__email__ = "bob@freedombone.net"
|
||
__status__ = "Production"
|
||
|
||
import os
|
||
import time
|
||
from webfinger import webfingerHandle
|
||
from auth import createBasicAuthHeader
|
||
from posts import getPersonBox
|
||
from session import postJson
|
||
from session import postImage
|
||
from utils import validNickname
|
||
from utils import loadJson
|
||
from utils import saveJson
|
||
from media import removeMetaData
|
||
|
||
|
||
def getValidSharedItemID(displayName: str) -> str:
|
||
"""Removes any invalid characters from the display name to
|
||
produce an item ID
|
||
"""
|
||
removeChars = (' ', '\n', '\r')
|
||
for ch in removeChars:
|
||
displayName = displayName.replace(ch, '')
|
||
removeChars2 = ('+', '/', '\\', '?', '&')
|
||
for ch in removeChars2:
|
||
displayName = displayName.replace(ch, '-')
|
||
displayName = displayName.replace('.', '_')
|
||
displayName = displayName.replace("’", "'")
|
||
return displayName
|
||
|
||
|
||
def removeShare(baseDir: str, nickname: str, domain: str,
|
||
displayName: str) -> None:
|
||
"""Removes a share for a person
|
||
"""
|
||
sharesFilename = baseDir + '/accounts/' + \
|
||
nickname + '@' + domain + '/shares.json'
|
||
if not os.path.isfile(sharesFilename):
|
||
print('ERROR: missing shares.json ' + sharesFilename)
|
||
return
|
||
|
||
sharesJson = loadJson(sharesFilename)
|
||
if not sharesJson:
|
||
print('ERROR: shares.json could not be loaded from ' + sharesFilename)
|
||
return
|
||
|
||
itemID = getValidSharedItemID(displayName)
|
||
if sharesJson.get(itemID):
|
||
# remove any image for the item
|
||
itemIDfile = baseDir + '/sharefiles/' + nickname + '/' + itemID
|
||
if sharesJson[itemID]['imageUrl']:
|
||
if sharesJson[itemID]['imageUrl'].endswith('.png'):
|
||
if os.path.isfile(itemIDfile + '.png'):
|
||
os.remove(itemIDfile + '.png')
|
||
if sharesJson[itemID]['imageUrl'].endswith('.jpg'):
|
||
if os.path.isfile(itemIDfile + '.jpg'):
|
||
os.remove(itemIDfile + '.jpg')
|
||
if sharesJson[itemID]['imageUrl'].endswith('.gif'):
|
||
if os.path.isfile(itemIDfile + '.gif'):
|
||
os.remove(itemIDfile + '.gif')
|
||
# remove the item itself
|
||
del sharesJson[itemID]
|
||
saveJson(sharesJson, sharesFilename)
|
||
else:
|
||
print('ERROR: share index "' + itemID +
|
||
'" does not exist in ' + sharesFilename)
|
||
|
||
|
||
def addShare(baseDir: str,
|
||
httpPrefix: str, nickname: str, domain: str, port: int,
|
||
displayName: str, summary: str, imageFilename: str,
|
||
itemType: str, itemCategory: str, location: str,
|
||
duration: str, debug: bool) -> None:
|
||
"""Updates the likes collection within a post
|
||
"""
|
||
sharesFilename = baseDir + '/accounts/' + \
|
||
nickname + '@' + domain + '/shares.json'
|
||
sharesJson = {}
|
||
if os.path.isfile(sharesFilename):
|
||
sharesJson = loadJson(sharesFilename)
|
||
|
||
duration = duration.lower()
|
||
durationSec = 0
|
||
published = int(time.time())
|
||
if ' ' in duration:
|
||
durationList = duration.split(' ')
|
||
if durationList[0].isdigit():
|
||
if 'hour' in durationList[1]:
|
||
durationSec = published + (int(durationList[0]) * 60 * 60)
|
||
if 'day' in durationList[1]:
|
||
durationSec = published + (int(durationList[0]) * 60 * 60 * 24)
|
||
if 'week' in durationList[1]:
|
||
durationSec = \
|
||
published + (int(durationList[0]) * 60 * 60 * 24 * 7)
|
||
if 'month' in durationList[1]:
|
||
durationSec = \
|
||
published + (int(durationList[0]) * 60 * 60 * 24 * 30)
|
||
if 'year' in durationList[1]:
|
||
durationSec = \
|
||
published + (int(durationList[0]) * 60 * 60 * 24 * 365)
|
||
|
||
itemID = getValidSharedItemID(displayName)
|
||
|
||
# has an image for this share been uploaded?
|
||
imageUrl = None
|
||
moveImage = False
|
||
if not imageFilename:
|
||
sharesImageFilename = \
|
||
baseDir + '/accounts/' + nickname + '@' + domain + '/upload'
|
||
if os.path.isfile(sharesImageFilename + '.png'):
|
||
imageFilename = sharesImageFilename + '.png'
|
||
moveImage = True
|
||
elif os.path.isfile(sharesImageFilename + '.jpg'):
|
||
imageFilename = sharesImageFilename + '.jpg'
|
||
moveImage = True
|
||
elif os.path.isfile(sharesImageFilename + '.gif'):
|
||
imageFilename = sharesImageFilename + '.gif'
|
||
moveImage = True
|
||
|
||
domainFull = domain
|
||
if port:
|
||
if port != 80 and port != 443:
|
||
if ':' not in domain:
|
||
domainFull = domain + ':' + str(port)
|
||
|
||
# copy or move the image for the shared item to its destination
|
||
if imageFilename:
|
||
if os.path.isfile(imageFilename):
|
||
if not os.path.isdir(baseDir + '/sharefiles'):
|
||
os.mkdir(baseDir + '/sharefiles')
|
||
if not os.path.isdir(baseDir + '/sharefiles/' + nickname):
|
||
os.mkdir(baseDir + '/sharefiles/' + nickname)
|
||
itemIDfile = baseDir + '/sharefiles/' + nickname + '/' + itemID
|
||
if imageFilename.endswith('.png'):
|
||
removeMetaData(imageFilename, itemIDfile + '.png')
|
||
if moveImage:
|
||
os.remove(imageFilename)
|
||
imageUrl = \
|
||
httpPrefix + '://' + domainFull + \
|
||
'/sharefiles/' + nickname + '/' + itemID + '.png'
|
||
if imageFilename.endswith('.jpg'):
|
||
removeMetaData(imageFilename, itemIDfile + '.jpg')
|
||
if moveImage:
|
||
os.remove(imageFilename)
|
||
imageUrl = \
|
||
httpPrefix + '://' + domainFull + \
|
||
'/sharefiles/' + nickname + '/' + itemID + '.jpg'
|
||
if imageFilename.endswith('.gif'):
|
||
removeMetaData(imageFilename, itemIDfile + '.gif')
|
||
if moveImage:
|
||
os.remove(imageFilename)
|
||
imageUrl = \
|
||
httpPrefix + '://' + domainFull + \
|
||
'/sharefiles/' + nickname + '/' + itemID + '.gif'
|
||
|
||
sharesJson[itemID] = {
|
||
"displayName": displayName,
|
||
"summary": summary,
|
||
"imageUrl": imageUrl,
|
||
"itemType": itemType,
|
||
"category": itemCategory,
|
||
"location": location,
|
||
"published": published,
|
||
"expire": durationSec
|
||
}
|
||
|
||
saveJson(sharesJson, sharesFilename)
|
||
|
||
# indicate that a new share is available
|
||
for subdir, dirs, files in os.walk(baseDir + '/accounts'):
|
||
for handle in dirs:
|
||
if '@' not in handle:
|
||
continue
|
||
accountDir = baseDir + '/accounts/' + handle
|
||
newShareFile = accountDir + '/.newShare'
|
||
if not os.path.isfile(newShareFile):
|
||
nickname = handle.split('@')[0]
|
||
try:
|
||
with open(newShareFile, 'w') as fp:
|
||
fp.write(httpPrefix + '://' + domainFull +
|
||
'/users/' + nickname + '/tlshares')
|
||
except BaseException:
|
||
pass
|
||
|
||
|
||
def expireShares(baseDir: str) -> None:
|
||
"""Removes expired items from shares
|
||
"""
|
||
for subdir, dirs, files in os.walk(baseDir + '/accounts'):
|
||
for account in dirs:
|
||
if '@' not in account:
|
||
continue
|
||
nickname = account.split('@')[0]
|
||
domain = account.split('@')[1]
|
||
expireSharesForAccount(baseDir, nickname, domain)
|
||
|
||
|
||
def expireSharesForAccount(baseDir: str, nickname: str, domain: str) -> None:
|
||
"""Removes expired items from shares
|
||
"""
|
||
handleDomain = domain
|
||
if ':' in handleDomain:
|
||
handleDomain = domain.split(':')[0]
|
||
handle = nickname + '@' + handleDomain
|
||
sharesFilename = baseDir + '/accounts/' + handle + '/shares.json'
|
||
if os.path.isfile(sharesFilename):
|
||
sharesJson = loadJson(sharesFilename)
|
||
if sharesJson:
|
||
currTime = int(time.time())
|
||
deleteItemID = []
|
||
for itemID, item in sharesJson.items():
|
||
if currTime > item['expire']:
|
||
deleteItemID.append(itemID)
|
||
if deleteItemID:
|
||
for itemID in deleteItemID:
|
||
del sharesJson[itemID]
|
||
# remove any associated images
|
||
itemIDfile = \
|
||
baseDir + '/sharefiles/' + nickname + '/' + itemID
|
||
if os.path.isfile(itemIDfile + '.png'):
|
||
os.remove(itemIDfile + '.png')
|
||
if os.path.isfile(itemIDfile + '.jpg'):
|
||
os.remove(itemIDfile + '.jpg')
|
||
if os.path.isfile(itemIDfile + '.gif'):
|
||
os.remove(itemIDfile + '.gif')
|
||
saveJson(sharesJson, sharesFilename)
|
||
|
||
|
||
def getSharesFeedForPerson(baseDir: str,
|
||
domain: str, port: int,
|
||
path: str, httpPrefix: str,
|
||
sharesPerPage=12) -> {}:
|
||
"""Returns the shares for an account from GET requests
|
||
"""
|
||
if '/shares' not in path:
|
||
return None
|
||
# handle page numbers
|
||
headerOnly = True
|
||
pageNumber = None
|
||
if '?page=' in path:
|
||
pageNumber = path.split('?page=')[1]
|
||
if pageNumber == 'true':
|
||
pageNumber = 1
|
||
else:
|
||
try:
|
||
pageNumber = int(pageNumber)
|
||
except BaseException:
|
||
pass
|
||
path = path.split('?page=')[0]
|
||
headerOnly = False
|
||
|
||
if not path.endswith('/shares'):
|
||
return None
|
||
nickname = None
|
||
if path.startswith('/users/'):
|
||
nickname = path.replace('/users/', '', 1).replace('/shares', '')
|
||
if path.startswith('/@'):
|
||
nickname = path.replace('/@', '', 1).replace('/shares', '')
|
||
if not nickname:
|
||
return None
|
||
if not validNickname(domain, nickname):
|
||
return None
|
||
|
||
if port:
|
||
if port != 80 and port != 443:
|
||
if ':' not in domain:
|
||
domain = domain + ':' + str(port)
|
||
|
||
handleDomain = domain
|
||
if ':' in handleDomain:
|
||
handleDomain = domain.split(':')[0]
|
||
handle = nickname + '@' + handleDomain
|
||
sharesFilename = baseDir + '/accounts/' + handle + '/shares.json'
|
||
|
||
if headerOnly:
|
||
noOfShares = 0
|
||
if os.path.isfile(sharesFilename):
|
||
sharesJson = loadJson(sharesFilename)
|
||
if sharesJson:
|
||
noOfShares = len(sharesJson.items())
|
||
idStr = httpPrefix + '://' + domain + '/users/' + nickname
|
||
shares = {
|
||
'@context': 'https://www.w3.org/ns/activitystreams',
|
||
'first': idStr+'/shares?page=1',
|
||
'id': idStr+'/shares',
|
||
'totalItems': str(noOfShares),
|
||
'type': 'OrderedCollection'
|
||
}
|
||
return shares
|
||
|
||
if not pageNumber:
|
||
pageNumber = 1
|
||
|
||
nextPageNumber = int(pageNumber + 1)
|
||
idStr = httpPrefix + '://' + domain + '/users/' + nickname
|
||
shares = {
|
||
'@context': 'https://www.w3.org/ns/activitystreams',
|
||
'id': idStr+'/shares?page='+str(pageNumber),
|
||
'orderedItems': [],
|
||
'partOf': idStr+'/shares',
|
||
'totalItems': 0,
|
||
'type': 'OrderedCollectionPage'
|
||
}
|
||
|
||
if not os.path.isfile(sharesFilename):
|
||
print("test5")
|
||
return shares
|
||
currPage = 1
|
||
pageCtr = 0
|
||
totalCtr = 0
|
||
|
||
sharesJson = loadJson(sharesFilename)
|
||
if sharesJson:
|
||
for itemID, item in sharesJson.items():
|
||
pageCtr += 1
|
||
totalCtr += 1
|
||
if currPage == pageNumber:
|
||
shares['orderedItems'].append(item)
|
||
if pageCtr >= sharesPerPage:
|
||
pageCtr = 0
|
||
currPage += 1
|
||
shares['totalItems'] = totalCtr
|
||
lastPage = int(totalCtr / sharesPerPage)
|
||
if lastPage < 1:
|
||
lastPage = 1
|
||
if nextPageNumber > lastPage:
|
||
shares['next'] = \
|
||
httpPrefix + '://' + domain + '/users/' + nickname + \
|
||
'/shares?page=' + str(lastPage)
|
||
return shares
|
||
|
||
|
||
def sendShareViaServer(baseDir, session,
|
||
fromNickname: str, password: str,
|
||
fromDomain: str, fromPort: int,
|
||
httpPrefix: str, displayName: str,
|
||
summary: str, imageFilename: str,
|
||
itemType: str, itemCategory: str,
|
||
location: str, duration: str,
|
||
cachedWebfingers: {}, personCache: {},
|
||
debug: bool, projectVersion: str) -> {}:
|
||
"""Creates an item share via c2s
|
||
"""
|
||
if not session:
|
||
print('WARN: No session for sendShareViaServer')
|
||
return 6
|
||
|
||
fromDomainFull = fromDomain
|
||
if fromPort:
|
||
if fromPort != 80 and fromPort != 443:
|
||
if ':' not in fromDomain:
|
||
fromDomainFull = fromDomain + ':' + str(fromPort)
|
||
|
||
toUrl = 'https://www.w3.org/ns/activitystreams#Public'
|
||
ccUrl = httpPrefix + '://' + fromDomainFull + \
|
||
'/users/' + fromNickname + '/followers'
|
||
|
||
actor = httpPrefix + '://' + fromDomainFull + '/users/' + fromNickname
|
||
newShareJson = {
|
||
"@context": "https://www.w3.org/ns/activitystreams",
|
||
'type': 'Add',
|
||
'actor': actor,
|
||
'target': actor+'/shares',
|
||
'object': {
|
||
"type": "Offer",
|
||
"displayName": displayName,
|
||
"summary": summary,
|
||
"itemType": itemType,
|
||
"category": itemCategory,
|
||
"location": location,
|
||
"duration": duration,
|
||
'to': [toUrl],
|
||
'cc': [ccUrl]
|
||
},
|
||
'to': [toUrl],
|
||
'cc': [ccUrl]
|
||
}
|
||
|
||
handle = httpPrefix + '://' + fromDomainFull + '/@' + fromNickname
|
||
|
||
# lookup the inbox for the To handle
|
||
wfRequest = \
|
||
webfingerHandle(session, handle, httpPrefix,
|
||
cachedWebfingers,
|
||
fromDomain, projectVersion)
|
||
if not wfRequest:
|
||
if debug:
|
||
print('DEBUG: announce webfinger failed for ' + handle)
|
||
return 1
|
||
if not isinstance(wfRequest, dict):
|
||
print('WARN: Webfinger for ' + handle + ' did not return a dict. ' +
|
||
str(wfRequest))
|
||
return 1
|
||
|
||
postToBox = 'outbox'
|
||
|
||
# get the actor inbox for the To handle
|
||
(inboxUrl, pubKeyId, pubKey,
|
||
fromPersonId, sharedInbox,
|
||
capabilityAcquisition,
|
||
avatarUrl, displayName) = getPersonBox(baseDir, session, wfRequest,
|
||
personCache, projectVersion,
|
||
httpPrefix, fromNickname,
|
||
fromDomain, postToBox)
|
||
|
||
if not inboxUrl:
|
||
if debug:
|
||
print('DEBUG: No ' + postToBox + ' was found for ' + handle)
|
||
return 3
|
||
if not fromPersonId:
|
||
if debug:
|
||
print('DEBUG: No actor was found for ' + handle)
|
||
return 4
|
||
|
||
authHeader = createBasicAuthHeader(fromNickname, password)
|
||
|
||
if imageFilename:
|
||
headers = {
|
||
'host': fromDomain,
|
||
'Authorization': authHeader
|
||
}
|
||
postResult = \
|
||
postImage(session, imageFilename, [],
|
||
inboxUrl.replace('/' + postToBox, '/shares'),
|
||
headers, "inbox:write")
|
||
|
||
headers = {
|
||
'host': fromDomain,
|
||
'Content-type': 'application/json',
|
||
'Authorization': authHeader
|
||
}
|
||
postResult = \
|
||
postJson(session, newShareJson, [], inboxUrl, headers, "inbox:write")
|
||
if not postResult:
|
||
if debug:
|
||
print('DEBUG: POST announce failed for c2s to ' + inboxUrl)
|
||
# return 5
|
||
|
||
if debug:
|
||
print('DEBUG: c2s POST share item success')
|
||
|
||
return newShareJson
|
||
|
||
|
||
def sendUndoShareViaServer(baseDir: str, session,
|
||
fromNickname: str, password: str,
|
||
fromDomain: str, fromPort: int,
|
||
httpPrefix: str, displayName: str,
|
||
cachedWebfingers: {}, personCache: {},
|
||
debug: bool, projectVersion: str) -> {}:
|
||
"""Undoes a share via c2s
|
||
"""
|
||
if not session:
|
||
print('WARN: No session for sendUndoShareViaServer')
|
||
return 6
|
||
|
||
fromDomainFull = fromDomain
|
||
if fromPort:
|
||
if fromPort != 80 and fromPort != 443:
|
||
if ':' not in fromDomain:
|
||
fromDomainFull = fromDomain + ':' + str(fromPort)
|
||
|
||
toUrl = 'https://www.w3.org/ns/activitystreams#Public'
|
||
ccUrl = httpPrefix + '://' + fromDomainFull + \
|
||
'/users/' + fromNickname + '/followers'
|
||
|
||
actor = httpPrefix + '://' + fromDomainFull + '/users/' + fromNickname
|
||
undoShareJson = {
|
||
"@context": "https://www.w3.org/ns/activitystreams",
|
||
'type': 'Remove',
|
||
'actor': actor,
|
||
'target': actor + '/shares',
|
||
'object': {
|
||
"type": "Offer",
|
||
"displayName": displayName,
|
||
'to': [toUrl],
|
||
'cc': [ccUrl]
|
||
},
|
||
'to': [toUrl],
|
||
'cc': [ccUrl]
|
||
}
|
||
|
||
handle = httpPrefix + '://' + fromDomainFull + '/@' + fromNickname
|
||
|
||
# lookup the inbox for the To handle
|
||
wfRequest = \
|
||
webfingerHandle(session, handle, httpPrefix, cachedWebfingers,
|
||
fromDomain, projectVersion)
|
||
if not wfRequest:
|
||
if debug:
|
||
print('DEBUG: announce webfinger failed for ' + handle)
|
||
return 1
|
||
if not isinstance(wfRequest, dict):
|
||
print('WARN: Webfinger for ' + handle + ' did not return a dict. ' +
|
||
str(wfRequest))
|
||
return 1
|
||
|
||
postToBox = 'outbox'
|
||
|
||
# get the actor inbox for the To handle
|
||
(inboxUrl, pubKeyId, pubKey,
|
||
fromPersonId, sharedInbox,
|
||
capabilityAcquisition,
|
||
avatarUrl, displayName) = getPersonBox(baseDir, session, wfRequest,
|
||
personCache, projectVersion,
|
||
httpPrefix, fromNickname,
|
||
fromDomain, postToBox)
|
||
|
||
if not inboxUrl:
|
||
if debug:
|
||
print('DEBUG: No '+postToBox+' was found for ' + handle)
|
||
return 3
|
||
if not fromPersonId:
|
||
if debug:
|
||
print('DEBUG: No actor was found for ' + handle)
|
||
return 4
|
||
|
||
authHeader = createBasicAuthHeader(fromNickname, password)
|
||
|
||
headers = {
|
||
'host': fromDomain,
|
||
'Content-type': 'application/json',
|
||
'Authorization': authHeader
|
||
}
|
||
postResult = \
|
||
postJson(session, undoShareJson, [], inboxUrl, headers, "inbox:write")
|
||
if not postResult:
|
||
if debug:
|
||
print('DEBUG: POST announce failed for c2s to ' + inboxUrl)
|
||
# return 5
|
||
|
||
if debug:
|
||
print('DEBUG: c2s POST undo share success')
|
||
|
||
return undoShareJson
|
||
|
||
|
||
def outboxShareUpload(baseDir: str, httpPrefix: str,
|
||
nickname: str, domain: str, port: int,
|
||
messageJson: {}, debug: bool) -> None:
|
||
""" When a shared item is received by the outbox from c2s
|
||
"""
|
||
if not messageJson.get('type'):
|
||
return
|
||
if not messageJson['type'] == 'Add':
|
||
return
|
||
if not messageJson.get('object'):
|
||
return
|
||
if not isinstance(messageJson['object'], dict):
|
||
return
|
||
if not messageJson['object'].get('type'):
|
||
if debug:
|
||
print('DEBUG: undo block - no type')
|
||
return
|
||
if not messageJson['object']['type'] == 'Offer':
|
||
if debug:
|
||
print('DEBUG: not an Offer activity')
|
||
return
|
||
if not messageJson['object'].get('displayName'):
|
||
if debug:
|
||
print('DEBUG: displayName missing from Offer')
|
||
return
|
||
if not messageJson['object'].get('summary'):
|
||
if debug:
|
||
print('DEBUG: summary missing from Offer')
|
||
return
|
||
if not messageJson['object'].get('itemType'):
|
||
if debug:
|
||
print('DEBUG: itemType missing from Offer')
|
||
return
|
||
if not messageJson['object'].get('category'):
|
||
if debug:
|
||
print('DEBUG: category missing from Offer')
|
||
return
|
||
if not messageJson['object'].get('location'):
|
||
if debug:
|
||
print('DEBUG: location missing from Offer')
|
||
return
|
||
if not messageJson['object'].get('duration'):
|
||
if debug:
|
||
print('DEBUG: duration missing from Offer')
|
||
return
|
||
addShare(baseDir,
|
||
httpPrefix, nickname, domain, port,
|
||
messageJson['object']['displayName'],
|
||
messageJson['object']['summary'],
|
||
messageJson['object']['imageFilename'],
|
||
messageJson['object']['itemType'],
|
||
messageJson['object']['itemCategory'],
|
||
messageJson['object']['location'],
|
||
messageJson['object']['duration'],
|
||
debug)
|
||
if debug:
|
||
print('DEBUG: shared item received via c2s')
|
||
|
||
|
||
def outboxUndoShareUpload(baseDir: str, httpPrefix: str,
|
||
nickname: str, domain: str, port: int,
|
||
messageJson: {}, debug: bool) -> None:
|
||
""" When a shared item is removed via c2s
|
||
"""
|
||
if not messageJson.get('type'):
|
||
return
|
||
if not messageJson['type'] == 'Remove':
|
||
return
|
||
if not messageJson.get('object'):
|
||
return
|
||
if not isinstance(messageJson['object'], dict):
|
||
return
|
||
if not messageJson['object'].get('type'):
|
||
if debug:
|
||
print('DEBUG: undo block - no type')
|
||
return
|
||
if not messageJson['object']['type'] == 'Offer':
|
||
if debug:
|
||
print('DEBUG: not an Offer activity')
|
||
return
|
||
if not messageJson['object'].get('displayName'):
|
||
if debug:
|
||
print('DEBUG: displayName missing from Offer')
|
||
return
|
||
removeShare(baseDir, nickname, domain,
|
||
messageJson['object']['displayName'])
|
||
if debug:
|
||
print('DEBUG: shared item removed via c2s')
|