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Add a ListEntry option for getting more information about an entity.
[invirt/packages/python-afs.git] / afs / _pts.pyx
diff --git a/afs/_pts.pyx b/afs/_pts.pyx
index 822caf5..77b3283 100644 (file)
--- a/afs/_pts.pyx
+++ b/afs/_pts.pyx
@@ -1,33 +1,383 @@
-cimport afs as a
+from afs cimport *
+
+cdef import from "afs/ptuser.h":
+    enum:
+        PR_MAXNAMELEN
+        PRGRP
+        ANONYMOUSID
+
+    ctypedef char prname[PR_MAXNAMELEN]
+
+    struct namelist:
+        unsigned int namelist_len
+        prname *namelist_val
+
+    struct prlist:
+        unsigned int prlist_len
+        afs_int32 *prlist_val
+
+    struct idlist:
+        unsigned int idlist_len
+        afs_int32 *idlist_val
+
+    struct prcheckentry:
+        afs_int32 flags
+        afs_int32 id
+        afs_int32 owner
+        afs_int32 creator
+        afs_int32 ngroups
+        afs_int32 nusers
+        afs_int32 count
+        afs_int32 reserved[5]
+        char name[PR_MAXNAMELEN]
+
+    int ubik_PR_NameToID(ubik_client *, afs_int32, namelist *, idlist *)
+    int ubik_PR_IDToName(ubik_client *, afs_int32, idlist *, namelist *)
+    int ubik_PR_INewEntry(ubik_client *, afs_int32, char *, afs_int32, afs_int32)
+    int ubik_PR_NewEntry(ubik_client *, afs_int32, char *, afs_int32, afs_int32, afs_int32 *)
+    int ubik_PR_Delete(ubik_client *, afs_int32, afs_int32)
+    int ubik_PR_AddToGroup(ubik_client *, afs_int32, afs_int32, afs_int32)
+    int ubik_PR_RemoveFromGroup(ubik_client *, afs_int32, afs_int32, afs_int32)
+    int ubik_PR_ListElements(ubik_client *, afs_int32, afs_int32, prlist *, afs_int32 *)
+    int ubik_PR_ListOwned(ubik_client *, afs_int32, afs_int32, prlist *, afs_int32 *)
+    int ubik_PR_ListEntry(ubik_client *, afs_int32, afs_int32, prcheckentry *)
+
+cdef import from "afs/pterror.h":
+    enum:
+        PRNOENT
+        PRTOOMANY
+
+    void initialize_PT_error_table()
+
+cdef class PTEntry:
+    cdef public afs_int32 flags
+    cdef public afs_int32 id
+    cdef public afs_int32 owner
+    cdef public afs_int32 creator
+    cdef public afs_int32 ngroups
+    cdef public afs_int32 nusers
+    cdef public afs_int32 count
+    cdef afs_int32 reserved[5]
+    cdef public char * name
+
+cdef int _ptentry_from_c(PTEntry p_entry, prcheckentry c_entry) except -1:
+    if p_entry is None:
+        raise TypeError
+        return -1
+
+    p_entry.flags = c_entry.flags
+    p_entry.id = c_entry.id
+    p_entry.owner = c_entry.owner
+    p_entry.creator = c_entry.creator
+    p_entry.ngroups = c_entry.ngroups
+    p_entry.nusers = c_entry.nusers
+    p_entry.count = c_entry.count
+    memcpy(p_entry.reserved, c_entry.reserved, sizeof(p_entry.reserved))
+    p_entry.name = c_entry.name
+    return 0
+
+cdef int _ptentry_to_c(prcheckentry * c_entry, PTEntry p_entry) except -1:
+    if p_entry is None:
+        raise TypeError
+        return -1
+
+    c_entry.flags = p_entry.flags
+    c_entry.id = p_entry.id
+    c_entry.owner = p_entry.owner
+    c_entry.creator = p_entry.creator
+    c_entry.ngroups = p_entry.ngroups
+    c_entry.nusers = p_entry.nusers
+    c_entry.count = p_entry.count
+    memcpy(c_entry.reserved, p_entry.reserved, sizeof(p_entry.reserved))
+    strncpy(c_entry.name, p_entry.name, sizeof(c_entry.name))
+    return 0
 
 cdef class PTS:
 
 cdef class PTS:
-    cdef a.ubik_client * client
-    
+    """
+    A PTS object is essentially a handle to talk to the server in a
+    given cell.
+
+    cell defaults to None. If no argument is passed for cell, PTS
+    connects to the home cell.
+
+    sec is the security level, an integer from 0 to 3:
+      - 0: unauthenticated connection
+      - 1: try authenticated, then fall back to unauthenticated
+      - 2: fail if an authenticated connection can't be established
+      - 3: same as 2, plus encrypt all traffic to the protection
+        server
+    """
+    cdef ubik_client * client
+
     def __cinit__(self, cell=None, sec=1):
     def __cinit__(self, cell=None, sec=1):
-        cdef a.afs_int32 code
-        cdef a.afsconf_dir *cdir
-        cdef a.afsconf_cell info
+        cdef afs_int32 code
+        cdef afsconf_dir *cdir
+        cdef afsconf_cell info
         cdef char * c_cell
         cdef char * c_cell
-        
+        cdef ktc_principal prin
+        cdef ktc_token token
+        cdef rx_securityClass *sc
+        cdef rx_connection *serverconns[MAXSERVERS]
+        cdef int i
+
+        initialize_PT_error_table()
+
         if cell is None:
             c_cell = NULL
         else:
             c_cell = cell
         if cell is None:
             c_cell = NULL
         else:
             c_cell = cell
-        
+
         self.client = NULL
         self.client = NULL
-        
-        code = a.rx_Init(0)
+
+        code = rx_Init(0)
         if code != 0:
             raise Exception(code, "Error initializing Rx")
         if code != 0:
             raise Exception(code, "Error initializing Rx")
-        
-        cdir = a.afsconf_Open(a.AFSDIR_CLIENT_ETC_DIRPATH)
+
+        cdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH)
         if cdir is NULL:
         if cdir is NULL:
-            raise OSError(a.errno,
+            raise OSError(errno,
                           "Error opening configuration directory (%s): %s" % \
                           "Error opening configuration directory (%s): %s" % \
-                              (a.AFSDIR_CLIENT_ETC_DIRPATH, a.strerror(a.errno)))
-        code = a.afsconf_GetCellInfo(cdir, c_cell, "afsprot", &info)
+                              (AFSDIR_CLIENT_ETC_DIRPATH, strerror(errno)))
+        code = afsconf_GetCellInfo(cdir, c_cell, "afsprot", &info)
+        if code != 0:
+            raise Exception(code, "GetCellInfo: %s" % afs_error_message(code))
+
+        if sec > 0:
+            strncpy(prin.cell, info.name, sizeof(prin.cell))
+            prin.instance[0] = 0
+            strncpy(prin.name, "afs", sizeof(prin.name))
+
+            code = ktc_GetToken(&prin, &token, sizeof(token), NULL);
+            if code != 0:
+                if sec >= 2:
+                    # No really - we wanted authentication
+                    raise Exception(code, "Failed to get token for service AFS: %s" % afs_error_message(code))
+                sec = 0
+            else:
+                if sec == 3:
+                    level = rxkad_crypt
+                else:
+                    level = rxkad_clear
+                sc = rxkad_NewClientSecurityObject(level, &token.sessionKey,
+                                                   token.kvno, token.ticketLen,
+                                                   token.ticket)
+
+        if sec == 0:
+            sc = rxnull_NewClientSecurityObject()
+        else:
+            sec = 2
+
+        memset(serverconns, 0, sizeof(serverconns))
+        for 0 <= i < info.numServers:
+            serverconns[i] = rx_NewConnection(info.hostAddr[i].sin_addr.s_addr,
+                                              info.hostAddr[i].sin_port,
+                                              PRSRV,
+                                              sc,
+                                              sec)
+
+        code = ubik_ClientInit(serverconns, &self.client)
         if code != 0:
         if code != 0:
-            raise Exception(code, "GetCellInfo: %s" % a.error_message(code))
-    
+            raise Exception("Failed to initialize ubik connection to Protection server: %s" % afs_error_message(code))
+
+        code = rxs_Release(sc)
+
     def __dealloc__(self):
     def __dealloc__(self):
-        a.rx_Finalize()
+        ubik_ClientDestroy(self.client)
+        rx_Finalize()
+
+    def NameToId(self, name):
+        """
+        Converts a user or group to an AFS ID.
+        """
+        cdef namelist lnames
+        cdef idlist lids
+        cdef afs_int32 code, id
+        name = name.lower()
+
+        lids.idlist_len = 0
+        lids.idlist_val = NULL
+        lnames.namelist_len = 1
+        lnames.namelist_val = <prname *>malloc(PR_MAXNAMELEN)
+        strncpy(lnames.namelist_val[0], name, PR_MAXNAMELEN)
+        code = ubik_PR_NameToID(self.client, 0, &lnames, &lids)
+        if lids.idlist_val is not NULL:
+            id = lids.idlist_val[0]
+            free(lids.idlist_val)
+        if id == ANONYMOUSID:
+            code = PRNOENT
+        if code != 0:
+            raise Exception("Failed to lookup PTS name: %s" % afs_error_message(code))
+        return id
+
+    def IdToName(self, id):
+        """
+        Convert an AFS ID to the name of a user or group.
+        """
+        cdef namelist lnames
+        cdef idlist lids
+        cdef afs_int32 code
+        cdef char name[PR_MAXNAMELEN]
+
+        lids.idlist_len = 1
+        lids.idlist_val = <afs_int32 *>malloc(sizeof(afs_int32))
+        lids.idlist_val[0] = id
+        lnames.namelist_len = 0
+        lnames.namelist_val = NULL
+        code = ubik_PR_IDToName(self.client, 0, &lids, &lnames)
+        if lnames.namelist_val is not NULL:
+            strncpy(name, lnames.namelist_val[0], sizeof(name))
+            free(lnames.namelist_val)
+        if lids.idlist_val is not NULL:
+            free(lids.idlist_val)
+        if name == str(id):
+            code = PRNOENT
+        if code != 0:
+            raise Exception("Failed to lookup PTS ID: %s" % afs_error_message(code))
+        return name
+
+    def CreateUser(self, name, id=None):
+        """
+        Create a new user in the protection database. If an ID is
+        provided, that one will be used.
+        """
+        cdef afs_int32 code
+        cdef afs_int32 cid
+        name = name[:PR_MAXNAMELEN].lower()
+
+        if id is not None:
+            cid = id
+
+        if id is not None:
+            code = ubik_PR_INewEntry(self.client, 0, name, cid, 0)
+        else:
+            code = ubik_PR_NewEntry(self.client, 0, name, 0, 0, &cid)
+
+        if code != 0:
+            raise Exception("Failed to create user: %s" % afs_error_message(code))
+        return cid
+
+    def CreateGroup(self, name, owner, id=None):
+        """
+        Create a new group in the protection database. If an ID is
+        provided, that one will be used.
+        """
+        cdef afs_int32 code, cid
+
+        name = name[:PR_MAXNAMELEN].lower()
+        oid = self.NameToId(owner)
+
+        if id is not None:
+            cid = id
+            code = ubik_PR_INewEntry(self.client, 0, name, cid, oid)
+        else:
+            code = ubik_PR_NewEntry(self.client, 0, name, PRGRP, oid, &cid)
+
+        if code != 0:
+            raise Exception("Failed to create group: %s" % afs_error_message(code))
+        return cid
+
+    def Delete(self, id):
+        """
+        Delete the protection database entry with the provided ID.
+        """
+        cdef afs_int32 code
+
+        code = ubik_PR_Delete(self.client, 0, id)
+        if code != 0:
+            raise Exception("Failed to delete user: %s" % afs_error_message(code))
+
+    def AddToGroup(self, uid, gid):
+        """
+        Add the user with the given ID to the group with the given ID.
+        """
+        cdef afs_int32 code
+
+        code = ubik_PR_AddToGroup(self.client, 0, uid, gid)
+        if code != 0:
+            raise Exception("Failed to add user to group: %s" % afs_error_message(code))
+
+    def RemoveFromGroup(self, uid, gid):
+        """
+        Remove the user with the given ID from the group with the given ID.
+        """
+        cdef afs_int32 code
+
+        code = ubik_PR_RemoveFromGroup(self.client, 0, uid, gid)
+        if code != 0:
+            raise Exception("Failed to remove user from group: %s" % afs_error_message(code))
+
+    def ListMembers(self, id):
+        """
+        Get the membership of an entity.
+
+        If id is a group ID, this returns the users that are in that
+        group.
+
+        If id is a user ID, this returns the list of groups that user
+        is on.
+
+        This returns a list of PTS IDs.
+        """
+        cdef afs_int32 code, over
+        cdef prlist alist
+        cdef int i
+        cdef object members = []
+
+        alist.prlist_len = 0
+        alist.prlist_val = NULL
+
+        code = ubik_PR_ListElements(self.client, 0, id, &alist, &over)
+
+        if alist.prlist_val is not NULL:
+            for i in range(alist.prlist_len):
+                members.append(alist.prlist_val[i])
+            free(alist.prlist_val)
+
+        if over:
+            code = PRTOOMANY
+        if code != 0:
+            raise Exception("Failed to get group membership: %s" % afs_error_message(code))
+
+        return members
+
+    def ListOwned(self, oid):
+        """
+        Get all groups owned by an entity.
+        """
+        cdef afs_int32 code, over
+        cdef prlist alist
+        cdef int i
+        cdef object owned = []
+
+        alist.prlist_len = 0
+        alist.prlist_val = NULL
+
+        code = ubik_PR_ListOwned(self.client, 0, oid, &alist, &over)
+
+        if alist.prlist_val is not NULL:
+            for i in range(alist.prlist_len):
+                owned.append(alist.prlist_val[i])
+            free(alist.prlist_val)
+
+        if over:
+            code = PRTOOMANY
+        if code != 0:
+            raise Exception("Failed to get owned entities: %s" % afs_error_message(code))
+
+        return owned
+
+    def ListEntry(self, id):
+        """
+        Load a PTEntry instance with information about the provided
+        ID.
+        """
+        cdef afs_int32 code
+        cdef prcheckentry centry
+        cdef object entry = PTEntry()
+
+        code = ubik_PR_ListEntry(self.client, 0, id, &centry)
+        if code != 0:
+            raise Exception("Error getting entity info: %s" % afs_error_message(code))
+
+        _ptentry_from_c(entry, centry)
+        return entry
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