| 1 | # -*- coding: utf-8 -*- |
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| 2 | |
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| 3 | import os.path |
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| 4 | import base64 |
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| 5 | import os |
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| 6 | import pwd |
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| 7 | import multiprocessing |
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| 8 | import socket |
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| 9 | import ssl |
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| 10 | import shutil |
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| 11 | |
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| 12 | from xmlrpclib import * |
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| 13 | |
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| 14 | |
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| 15 | NET="/net/server-sync/" |
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| 16 | |
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| 17 | NET_FOLDER="/net/server-sync/home/.lliurex-harvester/" |
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| 18 | ORIG_NET_FOLDER=NET_FOLDER |
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| 19 | |
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| 20 | NEW_NET_FOLDER="/net/server-sync/home/students/%%STUDENT%%/.harvester/" |
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| 21 | |
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| 22 | if not os.path.exists(NET): |
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| 23 | |
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| 24 | NET_FOLDER="/run/%%USER%%/home/.lliurex-harvester/" |
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| 25 | NEW_NET_FOLDER="/run/%%USER%%/home/students/%%STUDENT%%/.harvester/" |
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| 26 | |
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| 27 | |
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| 28 | |
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| 29 | class TeacherShare: |
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| 30 | |
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| 31 | |
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| 32 | def send_to_teacher(self,from_user,to_user,file_name,file_in_b64): |
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| 33 | |
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| 34 | file_name=file_name.encode("utf-8") |
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| 35 | server = ServerProxy ("https://server:9779") |
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| 36 | try: |
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| 37 | self.paths=server.get_paths("","TeacherShareManager") |
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| 38 | except Exception as e: |
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| 39 | print e |
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| 40 | return False |
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| 41 | |
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| 42 | |
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| 43 | if to_user in self.paths: |
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| 44 | try: |
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| 45 | path,ip,name=self.paths[to_user] |
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| 46 | fname=self.generate_file_name(from_user,file_name,path) |
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| 47 | f=open(fname,'w') |
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| 48 | f.write(base64.b64decode(file_in_b64)) |
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| 49 | f.close() |
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| 50 | os.chown(fname,pwd.getpwnam(to_user)[2],pwd.getpwnam(to_user)[3]) |
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| 51 | return True |
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| 52 | |
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| 53 | except Exception as e: |
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| 54 | print e |
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| 55 | return False |
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| 56 | |
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| 57 | else: |
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| 58 | return False |
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| 59 | |
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| 60 | |
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| 61 | |
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| 62 | #def send_to_users |
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| 63 | |
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| 64 | def send_to_teacher_socket_p(self,from_user,to_user,file_path,queue): |
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| 65 | |
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| 66 | ret_value=False |
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| 67 | file_path=file_path.encode("utf-8") |
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| 68 | server = ServerProxy ("https://server:9779") |
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| 69 | |
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| 70 | try: |
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| 71 | paths=server.get_paths("","TeacherShareManager") |
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| 72 | except Exception as e: |
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| 73 | print e |
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| 74 | |
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| 75 | if to_user in paths: |
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| 76 | |
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| 77 | try: |
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| 78 | path,name,ip,port=paths[to_user] |
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| 79 | student_uid=pwd.getpwnam(from_user)[2] |
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| 80 | student_gid=pwd.getpwnam(from_user)[3] |
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| 81 | os.setgid(student_gid) |
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| 82 | os.setuid(student_uid) |
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| 83 | f=open(file_path,'rb') |
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| 84 | tmp=file_path.split("/") |
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| 85 | file_name=tmp[len(tmp)-1] |
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| 86 | |
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| 87 | s=socket.socket() |
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| 88 | ssl_socket=ssl.wrap_socket(s) |
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| 89 | ssl_socket.connect((ip,port)) |
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| 90 | ssl_socket.sendall("[N4D-HEADER-BEGIN]user="+from_user+";file="+file_name+"[N4D-HEADER-END]"+f.read()) |
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| 91 | ret_value=True |
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| 92 | ssl_socket.close() |
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| 93 | |
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| 94 | except Exception as e: |
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| 95 | print e |
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| 96 | |
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| 97 | |
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| 98 | queue.put(ret_value) |
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| 99 | |
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| 100 | #def send_to_teacher_socket_mp |
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| 101 | |
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| 102 | def send_to_teacher_net(self,from_user,to_user,file_path): |
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| 103 | |
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| 104 | file_path=file_path.encode("utf8") |
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| 105 | |
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| 106 | student_uid=pwd.getpwnam(from_user)[2] |
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| 107 | student_gid=pwd.getpwnam(from_user)[3] |
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| 108 | |
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| 109 | teacher_uid=pwd.getpwnam(to_user)[2] |
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| 110 | teacher_gid=pwd.getpwnam(to_user)[3] |
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| 111 | |
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| 112 | |
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| 113 | server = ServerProxy ("https://server:9779") |
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| 114 | |
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| 115 | try: |
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| 116 | paths=server.get_paths("","TeacherShareManager") |
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| 117 | |
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| 118 | except Exception as e: |
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| 119 | print e |
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| 120 | return False |
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| 121 | |
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| 122 | if to_user in paths: |
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| 123 | path,name,ip,port=paths[to_user] |
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| 124 | path=path.encode("utf8") |
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| 125 | name=name.encode("utf8") |
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| 126 | try: |
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| 127 | #STEP 1 --- TO /NET |
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| 128 | src=file_path |
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| 129 | tmp=file_path.split("/") |
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| 130 | file_name=tmp[len(tmp)-1] |
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| 131 | tmp_net_folder=NEW_NET_FOLDER.replace("%%USER%%",from_user) |
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| 132 | tmp_net_folder=tmp_net_folder.replace("%%STUDENT%%",from_user) |
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| 133 | dst=tmp_net_folder+"/["+from_user+"]_"+file_name |
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| 134 | queue=multiprocessing.Queue() |
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| 135 | p=multiprocessing.Process(target=self.copy_file_as_user,args=(src,dst,student_uid,student_gid,False,queue)) |
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| 136 | p.start() |
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| 137 | p.join() |
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| 138 | |
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| 139 | if not queue.get(): |
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| 140 | return False |
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| 141 | |
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| 142 | #STEP 2 -- TEACHER GRABS IT |
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| 143 | server=ServerProxy("https://"+ip+":9779") |
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| 144 | return server.grab_file("","TeacherShare",to_user,"["+from_user+"]_"+file_name,from_user) |
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| 145 | |
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| 146 | |
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| 147 | except Exception as e: |
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| 148 | |
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| 149 | print e |
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| 150 | return False |
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| 151 | |
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| 152 | |
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| 153 | #def send_to_teacher_net |
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| 154 | |
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| 155 | def grab_file(self,teacher,file_name,student): |
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| 156 | |
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| 157 | file_name=file_name.encode("utf8") |
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| 158 | try: |
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| 159 | server=ServerProxy("https://server:9779") |
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| 160 | paths=server.get_paths("","TeacherShareManager") |
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| 161 | if teacher in paths: |
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| 162 | path,name,ip,port=paths[teacher] |
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| 163 | path=path.encode("utf8") |
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| 164 | name=name.encode("utf8") |
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| 165 | tmp_net_folder=NEW_NET_FOLDER.replace("%%STUDENT%%",student) |
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| 166 | tmp_net_folder=tmp_net_folder.replace("%%USER%%",teacher) |
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| 167 | src=tmp_net_folder+file_name |
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| 168 | dst=path+file_name |
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| 169 | teacher_uid=pwd.getpwnam(teacher)[2] |
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| 170 | teacher_gid=pwd.getpwnam(teacher)[3] |
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| 171 | queue=multiprocessing.Queue() |
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| 172 | p=multiprocessing.Process(target=self.copy_file_as_user,args=(src,dst,teacher_uid,teacher_gid,True,queue)) |
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| 173 | p.start() |
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| 174 | p.join() |
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| 175 | return queue.get() |
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| 176 | |
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| 177 | else: |
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| 178 | print "[TeacherShare] Teacher " + teacher + " not sharing [!]" |
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| 179 | return False |
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| 180 | |
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| 181 | |
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| 182 | |
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| 183 | except Exception as e: |
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| 184 | print e |
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| 185 | return False |
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| 186 | |
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| 187 | #def grab_file |
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| 188 | |
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| 189 | def copy_file_as_user(self,src,dst,uid,gid,delete,queue): |
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| 190 | |
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| 191 | try: |
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| 192 | os.setgid(gid) |
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| 193 | os.setuid(uid) |
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| 194 | |
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| 195 | tmp=dst.split("/") |
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| 196 | folder=""+"/".join(tmp[0:len(tmp)-2]) |
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| 197 | prevmask = os.umask(0) |
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| 198 | |
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| 199 | if not os.path.exists(folder): |
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| 200 | os.makedirs(folder,02770) |
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| 201 | os.chmod(folder,02770) |
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| 202 | |
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| 203 | shutil.copyfile(src,dst) |
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| 204 | os.chmod(dst,0660) |
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| 205 | os.umask(prevmask) |
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| 206 | |
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| 207 | if delete: |
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| 208 | os.remove(src) |
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| 209 | queue.put(True) |
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| 210 | except Exception as e: |
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| 211 | print e |
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| 212 | queue.put(False) |
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| 213 | |
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| 214 | #def copy_file_as_user |
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| 215 | |
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| 216 | |
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| 217 | def send_to_teacher_socket(self,from_user,to_user,file_name): |
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| 218 | |
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| 219 | queue=multiprocessing.Queue() |
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| 220 | p=multiprocessing.Process(target=self.send_to_teacher_socket_p,args=(from_user,to_user, file_name,queue,)) |
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| 221 | p.start() |
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| 222 | p.join() |
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| 223 | return queue.get() |
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| 224 | |
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| 225 | #def send_to_teacher_socket |
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| 226 | |
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| 227 | def generate_file_name(self,from_user,file_name,path): |
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| 228 | |
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| 229 | |
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| 230 | |
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| 231 | done=False |
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| 232 | counter=1 |
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| 233 | |
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| 234 | original_path=path |
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| 235 | original_file_name=file_name |
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| 236 | file_name="["+from_user+"]_"+file_name |
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| 237 | |
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| 238 | |
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| 239 | while not done: |
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| 240 | |
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| 241 | if os.path.exists(path+file_name): |
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| 242 | tmp_list=original_file_name.split(".") |
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| 243 | tmp_list[0]=tmp_list[0]+"_("+str(counter)+")" |
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| 244 | file_name=".".join(tmp_list) |
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| 245 | file_name="["+from_user+"]_"+file_name |
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| 246 | counter+=1 |
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| 247 | else: |
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| 248 | done=True |
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| 249 | |
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| 250 | return path+file_name |
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| 251 | |
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| 252 | |
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| 253 | |
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| 254 | |
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| 255 | |
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| 256 | #def generate_file_name |
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| 257 | |
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| 258 | |
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| 259 | #class TeacherFileManager |
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| 260 | |
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| 261 | if __name__=="__main__": |
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| 262 | |
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| 263 | tfm=TeacherShare() |
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| 264 | tfm.send_to_teacher_socket(1,2,3) |
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| 265 | #print tfm.generate_file_name("hector","hola.txt","/tmp/test/") |
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