Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 629 insertions, 0 deletions

diff --git a/source3/include/nameserv.h b/source3/include/nameserv.h
new file mode 100644
index 0000000..29b2d87
--- /dev/null
+++ b/source3/include/nameserv.h
@@ -0,0 +1,629 @@
+#ifndef _NAMESERV_H_
+#define _NAMESERV_H_
+/* 
+   Unix SMB/CIFS implementation.
+   NBT netbios header - version 2
+   Copyright (C) Andrew Tridgell 1994-1998
+   
+   This program 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 3 of the License, or
+   (at your option) any later version.
+   
+   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+   
+*/
+
+#define INFO_VERSION	"INFO/version"
+#define INFO_COUNT	"INFO/num_entries"
+#define INFO_ID_HIGH	"INFO/id_high"
+#define INFO_ID_LOW	"INFO/id_low"
+#define ENTRY_PREFIX 	"ENTRY/"
+
+#define PERMANENT_TTL 0
+
+/* NTAS uses 2, NT uses 1, WfWg uses 0 */
+#define MAINTAIN_LIST    2
+#define ELECTION_VERSION 1
+
+#define MAX_DGRAM_SIZE (576) /* tcp/ip datagram limit is 576 bytes */
+#define MIN_DGRAM_SIZE 12
+
+/*********************************************************
+ Types of reply packet.
+**********************************************************/
+
+enum netbios_reply_type_code { NMB_QUERY, NMB_STATUS, NMB_REG, NMB_REG_REFRESH,
+                               NMB_REL, NMB_WAIT_ACK, NMB_MULTIHOMED_REG,
+                               WINS_REG, WINS_QUERY };
+
+/* From rfc1002, 4.2.1.2 */
+/* Question types. */
+#define QUESTION_TYPE_NB_QUERY  0x20
+#define QUESTION_TYPE_NB_STATUS 0x21
+
+/* Question class */
+#define QUESTION_CLASS_IN  0x1
+
+/* Opcode definitions */
+#define NMB_NAME_QUERY_OPCODE       0x0
+#define NMB_NAME_REG_OPCODE         0x05 /* see rfc1002.txt 4.2.2,3,5,6,7,8 */
+#define NMB_NAME_RELEASE_OPCODE     0x06 /* see rfc1002.txt 4.2.9,10,11 */
+#define NMB_WACK_OPCODE             0x07 /* see rfc1002.txt 4.2.16 */
+/* Ambiguity in rfc1002 about which of these is correct. */
+/* WinNT uses 8 by default but can be made to use 9. */
+#define NMB_NAME_REFRESH_OPCODE_8   0x08 /* see rfc1002.txt 4.2.4 */
+#define NMB_NAME_REFRESH_OPCODE_9   0x09 /* see rfc1002.txt 4.2.4 */
+#define NMB_NAME_MULTIHOMED_REG_OPCODE 0x0F /* Invented by Microsoft. */
+
+/* XXXX what about all the other types?? 0x1, 0x2, 0x3, 0x4, 0x8? */
+
+/* Resource record types. rfc1002 4.2.1.3 */
+#define RR_TYPE_A                  0x1
+#define RR_TYPE_NS                 0x2
+#define RR_TYPE_NULL               0xA
+#define RR_TYPE_NB                0x20
+#define RR_TYPE_NBSTAT            0x21
+
+/* Resource record class. */
+#define RR_CLASS_IN                0x1
+
+/* NetBIOS flags */
+#define NB_GROUP  0x80
+#define NB_PERM   0x02
+#define NB_ACTIVE 0x04
+#define NB_CONFL  0x08
+#define NB_DEREG  0x10
+#define NB_BFLAG  0x00 /* Broadcast node type. */
+#define NB_PFLAG  0x20 /* Point-to-point node type. */
+#define NB_MFLAG  0x40 /* Mixed bcast & p-p node type. */
+#define NB_HFLAG  0x60 /* Microsoft 'hybrid' node type. */
+#define NB_NODETYPEMASK 0x60
+/* Mask applied to outgoing NetBIOS flags. */
+#define NB_FLGMSK 0xE0
+
+/* The wins flags. Looks like the nbflags ! */
+#define WINS_UNIQUE	0x00 /* Unique record */
+#define WINS_NGROUP	0x01 /* Normal Group eg: 1B */
+#define WINS_SGROUP	0x02 /* Special Group eg: 1C */
+#define WINS_MHOMED	0x03 /* MultiHomed */
+
+#define WINS_ACTIVE	0x00 /* active record */
+#define WINS_RELEASED	0x04 /* released record */
+#define WINS_TOMBSTONED 0x08 /* tombstoned record */
+#define WINS_DELETED	0x0C /* deleted record */
+
+#define WINS_STATE_MASK	0x0C
+
+#define WINS_LOCAL	0x00 /* local record */
+#define WINS_REMOTE	0x10 /* remote record */
+
+#define WINS_BNODE	0x00 /* Broadcast node */
+#define WINS_PNODE	0x20 /* PtP node */
+#define WINS_MNODE	0x40 /* Mixed node */
+#define WINS_HNODE	0x60 /* Hybrid node */
+
+#define WINS_NONSTATIC	0x00 /* dynamic record */
+#define WINS_STATIC	0x80 /* static record */
+
+#define WINS_STATE_ACTIVE(p) (((p)->data.wins_flags & WINS_STATE_MASK) == WINS_ACTIVE)
+
+
+/* NetBIOS flag identifier. */
+#define NAME_GROUP(p)  ((p)->data.nb_flags & NB_GROUP)
+#define NAME_BFLAG(p) (((p)->data.nb_flags & NB_NODETYPEMASK) == NB_BFLAG)
+#define NAME_PFLAG(p) (((p)->data.nb_flags & NB_NODETYPEMASK) == NB_PFLAG)
+#define NAME_MFLAG(p) (((p)->data.nb_flags & NB_NODETYPEMASK) == NB_MFLAG)
+#define NAME_HFLAG(p) (((p)->data.nb_flags & NB_NODETYPEMASK) == NB_HFLAG)
+
+/* Samba name state for a name in a namelist. */
+#define NAME_IS_ACTIVE(p)        ((p)->data.nb_flags & NB_ACTIVE)
+#define NAME_IN_CONFLICT(p)      ((p)->data.nb_flags & NB_CONFL)
+#define NAME_IS_DEREGISTERING(p) ((p)->data.nb_flags & NB_DEREG)
+
+/* Error codes for NetBIOS requests. */
+#define FMT_ERR   0x1       /* Packet format error. */
+#define SRV_ERR   0x2       /* Internal server error. */
+#define NAM_ERR   0x3       /* Name does not exist. */
+#define IMP_ERR   0x4       /* Request not implemented. */
+#define RFS_ERR   0x5       /* Request refused. */
+#define ACT_ERR   0x6       /* Active error - name owned by another host. */
+#define CFT_ERR   0x7       /* Name in conflict error. */
+
+#define REFRESH_TIME (15*60)
+#define NAME_POLL_REFRESH_TIME (5*60)
+#define NAME_POLL_INTERVAL 15
+
+/* Workgroup state identifiers. */
+#define AM_POTENTIAL_MASTER_BROWSER(work) ((work)->mst_state == MST_POTENTIAL)
+#define AM_LOCAL_MASTER_BROWSER(work) ((work)->mst_state == MST_BROWSER)
+#define AM_DOMAIN_MASTER_BROWSER(work) ((work)->dom_state == DOMAIN_MST)
+#define AM_DOMAIN_MEMBER(work) ((work)->log_state == LOGON_SRV)
+
+/* Microsoft browser NetBIOS name. */
+#define MSBROWSE "\001\002__MSBROWSE__\002"
+
+/* Mail slots. */
+#define BROWSE_MAILSLOT    "\\MAILSLOT\\BROWSE"
+#define NET_LOGON_MAILSLOT "\\MAILSLOT\\NET\\NETLOGON"
+#define NT_LOGON_MAILSLOT  "\\MAILSLOT\\NET\\NTLOGON"
+#define LANMAN_MAILSLOT    "\\MAILSLOT\\LANMAN"
+
+/* Samba definitions for find_name_on_subnet(). */
+#define FIND_ANY_NAME   0
+#define FIND_SELF_NAME  1
+
+/*
+ * The different name types that can be in namelists.
+ *
+ * SELF_NAME should only be on the broadcast and unicast subnets.
+ * LMHOSTS_NAME should only be in the remote_broadcast_subnet.
+ * REGISTER_NAME, DNS_NAME, DNSFAIL_NAME should only be in the wins_server_subnet.
+ * WINS_PROXY_NAME should only be on the broadcast subnets.
+ * PERMANENT_NAME can be on all subnets except remote_broadcast_subnet.
+ *
+ */
+
+enum name_source {LMHOSTS_NAME, REGISTER_NAME, SELF_NAME, DNS_NAME, 
+                  DNSFAIL_NAME, PERMANENT_NAME, WINS_PROXY_NAME};
+enum node_type {B_NODE=0, P_NODE=1, M_NODE=2, NBDD_NODE=3};
+enum packet_type {NMB_PACKET, DGRAM_PACKET};
+
+enum master_state {
+	MST_NONE,
+	MST_POTENTIAL,
+	MST_BACKUP,
+	MST_MSB,
+	MST_BROWSER,
+	MST_UNBECOMING_MASTER
+};
+
+enum domain_state {
+	DOMAIN_NONE,
+	DOMAIN_WAIT,
+	DOMAIN_MST
+};
+
+enum logon_state {
+	LOGON_NONE,
+	LOGON_WAIT,
+	LOGON_SRV
+};
+
+struct subnet_record;
+
+struct nmb_data {
+	uint16_t nb_flags;       /* Netbios flags. */
+	int num_ips;             /* Number of ip entries. */
+	struct in_addr *ip;      /* The ip list for this name. */
+
+	enum name_source source; /* Where the name came from. */
+
+	time_t death_time; /* The time the record must be removed (do not remove if 0). */
+	time_t refresh_time; /* The time the record should be refreshed. */
+  
+	uint64_t id;		/* unique id */
+	struct in_addr wins_ip;	/* the adress of the wins server this record comes from */
+
+	int wins_flags;		/* similar to the netbios flags but different ! */
+};
+
+/* This structure represents an entry in a local netbios name list. */
+struct name_record {
+	struct name_record *prev, *next;
+	struct subnet_record *subnet;
+	struct nmb_name       name;    /* The netbios name. */
+	struct nmb_data       data;    /* The netbios data. */
+};
+
+/* Browser cache for synchronising browse lists. */
+struct browse_cache_record {
+	struct browse_cache_record *prev, *next;
+	unstring        lmb_name;
+	unstring        work_group;
+	struct in_addr ip;
+	time_t         sync_time;
+	time_t         death_time; /* The time the record must be removed. */
+};
+
+/* used for server information: client, nameserv and ipc */
+struct server_info_struct {
+	fstring name;
+	uint32_t type;
+	fstring comment;
+	fstring domain; /* used ONLY in ipc.c NOT namework.c */
+	bool server_added; /* used ONLY in ipc.c NOT namework.c */
+};
+
+/* This is used to hold the list of servers in my domain, and is
+   contained within lists of domains. */
+
+struct server_record {
+	struct server_record *next;
+	struct server_record *prev;
+
+	struct subnet_record *subnet;
+
+	struct server_info_struct serv;
+	time_t death_time;  
+};
+
+/* A workgroup structure. It contains a list of servers. */
+struct work_record {
+	struct work_record *next;
+	struct work_record *prev;
+
+	struct subnet_record *subnet;
+
+	struct server_record *serverlist;
+
+	/* Stage of development from non-local-master up to local-master browser. */
+	enum master_state mst_state;
+
+	/* Stage of development from non-domain-master to domain-master browser. */
+	enum domain_state dom_state;
+
+  	/* Stage of development from non-logon-server to logon server. */
+	enum logon_state log_state;
+
+	/* Work group info. */
+	unstring work_group;
+	int     token;        /* Used when communicating with backup browsers. */
+	unstring local_master_browser_name;      /* Current local master browser. */
+
+	/* Announce info. */
+	time_t lastannounce_time;
+	int announce_interval;
+	bool    needannounce;
+
+	/* Timeout time for this workgroup. 0 means permanent. */
+	time_t death_time;  
+
+	/* Election info */
+	bool    RunningElection;
+	bool    needelection;
+	int     ElectionCount;
+	uint32_t  ElectionCriterion;
+
+	/* Domain master browser info. Used for efficient syncs. */
+	struct nmb_name dmb_name;
+	struct in_addr dmb_addr;
+};
+
+/* typedefs needed to define copy & free functions for userdata. */
+struct userdata_struct;
+
+typedef struct userdata_struct * (*userdata_copy_fn)(struct userdata_struct *);
+typedef void (*userdata_free_fn)(struct userdata_struct *);
+
+/* Structure to define any userdata passed around. */
+
+struct userdata_struct {
+	userdata_copy_fn copy_fn;
+	userdata_free_fn free_fn;
+	unsigned int userdata_len;
+	char data[16]; /* 16 is to ensure alignment/padding on all systems */
+};
+
+struct response_record;
+struct packet_struct;
+struct res_rec;
+
+/* typedef to define the function called when this response packet comes in. */
+typedef void (*response_function)(struct subnet_record *, struct response_record *,
+                                  struct packet_struct *);
+
+/* typedef to define the function called when this response record times out. */
+typedef void (*timeout_response_function)(struct subnet_record *,
+                                          struct response_record *);
+
+/* typedef to define the function called when the request that caused this
+   response record to be created is successful. */
+typedef void (*success_function)(struct subnet_record *, struct userdata_struct *, ...);
+
+/* typedef to define the function called when the request that caused this
+   response record to be created is unsuccessful. */
+typedef void (*fail_function)(struct subnet_record *, struct response_record *, ...);
+
+/* List of typedefs for success and fail functions of the different query
+   types. Used to catch any compile time prototype errors. */
+
+typedef void (*register_name_success_function)( struct subnet_record *,
+                                                struct userdata_struct *,
+                                                struct nmb_name *,
+                                                uint16_t,
+                                                int,
+                                                struct in_addr);
+typedef void (*register_name_fail_function)( struct subnet_record *,
+                                             struct response_record *,
+                                             struct nmb_name *);
+
+typedef void (*release_name_success_function)( struct subnet_record *,
+                                               struct userdata_struct *, 
+                                               struct nmb_name *,
+                                               struct in_addr);
+typedef void (*release_name_fail_function)( struct subnet_record *,
+                                            struct response_record *, 
+                                            struct nmb_name *);
+
+typedef void (*refresh_name_success_function)( struct subnet_record *,
+                                               struct userdata_struct *, 
+                                               struct nmb_name *,
+                                               uint16_t,
+                                               int,
+                                               struct in_addr);
+typedef void (*refresh_name_fail_function)( struct subnet_record *,
+                                            struct response_record *,
+                                            struct nmb_name *);
+
+typedef void (*query_name_success_function)( struct subnet_record *,
+                                             struct userdata_struct *,
+                                             struct nmb_name *,
+                                             struct in_addr,
+                                             struct res_rec *answers);
+
+typedef void (*query_name_fail_function)( struct subnet_record *,
+                                          struct response_record *,    
+                                          struct nmb_name *,
+                                          int);  
+
+typedef void (*node_status_success_function)( struct subnet_record *,
+                                              struct userdata_struct *,
+                                              struct res_rec *,
+                                              struct in_addr);
+typedef void (*node_status_fail_function)( struct subnet_record *,
+                                           struct response_record *);
+
+/* Initiated name queries are recorded in this list to track any responses. */
+
+struct response_record {
+	struct response_record *next;
+	struct response_record *prev;
+
+	uint16_t response_id;
+
+	/* Callbacks for packets received or not. */ 
+	response_function resp_fn;
+	timeout_response_function timeout_fn;
+
+	/* Callbacks for the request succeeding or not. */
+	success_function success_fn;
+	fail_function fail_fn;
+ 
+	struct packet_struct *packet;
+
+	struct userdata_struct *userdata;
+
+	int num_msgs;
+
+	time_t repeat_time;
+	time_t repeat_interval;
+	int    repeat_count;
+
+	/* Recursion protection. */
+	bool in_expiration_processing;
+};
+
+/* A subnet structure. It contains a list of workgroups and netbios names. */
+
+/*
+   B nodes will have their own, totally separate subnet record, with their
+   own netbios name set. These do NOT interact with other subnet records'
+   netbios names.
+*/
+
+enum subnet_type {
+	NORMAL_SUBNET              = 0,  /* Subnet listed in interfaces list. */
+	UNICAST_SUBNET             = 1,  /* Subnet for unicast packets. */
+	REMOTE_BROADCAST_SUBNET    = 2,  /* Subnet for remote broadcasts. */
+	WINS_SERVER_SUBNET         = 3   /* Only created if we are a WINS server. */
+};
+
+struct subnet_record {
+	struct subnet_record *next;
+	struct subnet_record *prev;
+
+	char  *subnet_name;      /* For Debug identification. */
+	enum subnet_type type;   /* To catagorize the subnet. */
+
+	struct work_record     *workgrouplist; /* List of workgroups. */
+	struct name_record     *namelist;   /* List of netbios names. */
+	struct response_record *responselist;  /* List of responses expected. */
+
+	bool namelist_changed;
+	bool work_changed;
+
+	struct in_addr bcast_ip;
+	struct in_addr mask_ip;
+	struct in_addr myip;
+	int nmb_sock;               /* socket to listen for unicast 137. */
+	int nmb_bcast;              /* socket to listen for broadcast 137. */
+	int dgram_sock;             /* socket to listen for unicast 138. */
+	int dgram_bcast;            /* socket to listen for broadcast 138. */
+};
+
+/* A resource record. */
+struct res_rec {
+	struct nmb_name rr_name;
+	int rr_type;
+	int rr_class;
+	int ttl;
+	int rdlength;
+	char rdata[MAX_DGRAM_SIZE];
+};
+
+/* Define these so we can pass info back to caller of name_query */
+#define NM_FLAGS_RS 0x80 /* Response. Cheat     */
+#define NM_FLAGS_AA 0x40 /* Authoritative       */
+#define NM_FLAGS_TC 0x20 /* Truncated           */
+#define NM_FLAGS_RD 0x10 /* Recursion Desired   */
+#define NM_FLAGS_RA 0x08 /* Recursion Available */
+#define NM_FLAGS_B  0x01 /* Broadcast           */
+
+/* An nmb packet. */
+struct nmb_packet {
+	struct {
+		int name_trn_id;
+		int opcode;
+		bool response;
+		struct {
+			bool bcast;
+			bool recursion_available;
+			bool recursion_desired;
+			bool trunc;
+			bool authoritative;
+		} nm_flags;
+		int rcode;
+		int qdcount;
+		int ancount;
+		int nscount;
+		int arcount;
+	} header;
+
+	struct {
+		struct nmb_name question_name;
+		int question_type;
+		int question_class;
+	} question;
+
+	struct res_rec *answers;
+	struct res_rec *nsrecs;
+	struct res_rec *additional;
+};
+
+/* msg_type field options - from rfc1002. */
+
+#define DGRAM_UNIQUE 0x10
+#define DGRAM_GROUP 0x11
+#define DGRAM_BROADCAST 0x12
+/* defined in IDL
+#define DGRAM_ERROR 0x13
+*/
+#define DGRAM_QUERY_REQUEST 0x14
+#define DGRAM_POSITIVE_QUERY_RESPONSE 0x15
+#define DGRAM_NEGATIVE_QUERT_RESPONSE 0x16
+
+/* A datagram - this normally contains SMB data in the data[] array. */
+
+struct dgram_packet {
+	struct {
+		int msg_type;
+		struct {
+			enum node_type node_type;
+			bool first;
+			bool more;
+		} flags;
+		int dgm_id;
+		struct in_addr source_ip;
+		int source_port;
+		int dgm_length;
+		int packet_offset;
+	} header;
+	struct nmb_name source_name;
+	struct nmb_name dest_name;
+	int datasize;
+	char data[MAX_DGRAM_SIZE];
+};
+
+/* Define a structure used to queue packets. This will be a linked
+ list of nmb packets. */
+
+struct packet_struct
+{
+	struct packet_struct *next;
+	struct packet_struct *prev;
+	bool locked;
+	struct in_addr ip;
+	int port;
+	int recv_fd;
+	int send_fd;
+	time_t timestamp;
+	enum packet_type packet_type;
+	union {
+		struct nmb_packet nmb;
+		struct dgram_packet dgram;
+	} packet;
+};
+
+/* Ids for netbios packet types. */
+
+#define ANN_HostAnnouncement         1
+#define ANN_AnnouncementRequest      2
+#define ANN_Election                 8
+#define ANN_GetBackupListReq         9
+#define ANN_GetBackupListResp       10
+#define ANN_BecomeBackup            11
+#define ANN_DomainAnnouncement      12
+#define ANN_MasterAnnouncement      13
+#define ANN_ResetBrowserState       14
+#define ANN_LocalMasterAnnouncement 15
+
+
+/* Broadcast packet announcement intervals, in minutes. */
+
+/* Attempt to add domain logon and domain master names. */
+#define CHECK_TIME_ADD_DOM_NAMES 5 
+
+/* Search for master browsers of workgroups samba knows about, 
+   except default. */
+#define CHECK_TIME_MST_BROWSE       5 
+
+/* Request backup browser announcements from other servers. */
+#define CHECK_TIME_ANNOUNCE_BACKUP 15
+
+/* Request host announcements from other servers: min and max of interval. */
+#define CHECK_TIME_MIN_HOST_ANNCE   3
+#define CHECK_TIME_MAX_HOST_ANNCE  12
+
+/* Announce as master to WINS server and any Primary Domain Controllers. */
+#define CHECK_TIME_MST_ANNOUNCE    15
+
+/* Time between syncs from domain master browser to local master browsers. */
+#define CHECK_TIME_DMB_TO_LMB_SYNC    15
+
+/* Do all remote announcements this often. */
+#define REMOTE_ANNOUNCE_INTERVAL 180
+
+/* what is the maximum period between name refreshes. Note that this only
+   affects non-permanent self names (in seconds) */
+#define MAX_REFRESH_TIME (60*20)
+
+/* The Extinction interval: 4 days, time a node will stay in released state  */
+#define EXTINCTION_INTERVAL (4*24*60*60)
+
+/* The Extinction time-out: 1 day, time a node will stay in deleted state */
+#define EXTINCTION_TIMEOUT (24*60*60)
+
+/* Macro's to enumerate subnets either with or without
+   the UNICAST subnet. */
+
+extern struct subnet_record *subnetlist;
+extern struct subnet_record *unicast_subnet;
+extern struct subnet_record *wins_server_subnet;
+extern struct subnet_record *remote_broadcast_subnet;
+
+#define FIRST_SUBNET subnetlist
+#define NEXT_SUBNET_EXCLUDING_UNICAST(x) ((x)->next)
+#define NEXT_SUBNET_INCLUDING_UNICAST(x) (get_next_subnet_maybe_unicast((x)))
+
+/* wins replication record used between nmbd and wrepld */
+typedef struct _WINS_RECORD {
+	char name[17];
+	char type;
+	int nb_flags;
+	int wins_flags;
+	uint64_t id;
+	int num_ips;
+	struct in_addr ip[25];
+	struct in_addr wins_ip;
+} WINS_RECORD;
+
+/* To be removed. */
+enum state_type { TEST };
+#endif /* _NAMESERV_H_ */