+++ /dev/null
-/*
- Unix SMB/CIFS implementation.
-
- a raw async NBT library
-
- Copyright (C) Andrew Tridgell 2005
-
- 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/>.
-*/
-
-#ifndef __LIBNBT_H__
-#define __LIBNBT_H__
-
-#include "librpc/gen_ndr/nbt.h"
-#include "librpc/ndr/libndr.h"
-
-/*
- possible states for pending requests
-*/
-enum nbt_request_state {NBT_REQUEST_SEND,
- NBT_REQUEST_WAIT,
- NBT_REQUEST_DONE,
- NBT_REQUEST_TIMEOUT,
- NBT_REQUEST_ERROR};
-
-/*
- a nbt name request
-*/
-struct nbt_name_request {
- struct nbt_name_request *next, *prev;
-
- enum nbt_request_state state;
-
- NTSTATUS status;
-
- /* the socket this was on */
- struct nbt_name_socket *nbtsock;
-
- /* where to send the request */
- struct socket_address *dest;
-
- /* timeout between retries */
- int timeout;
-
- /* how many retries to send on timeout */
- int num_retries;
-
- /* whether we have received a WACK */
- bool received_wack;
-
- /* the timeout event */
- struct timed_event *te;
-
- /* the name transaction id */
- uint16_t name_trn_id;
-
- /* is it a reply? */
- bool is_reply;
-
- /* the encoded request */
- DATA_BLOB encoded;
-
- /* shall we allow multiple replies? */
- bool allow_multiple_replies;
-
- unsigned int num_replies;
- struct nbt_name_reply {
- struct nbt_name_packet *packet;
- struct socket_address *dest;
- } *replies;
-
- /* information on what to do on completion */
- struct {
- void (*fn)(struct nbt_name_request *);
- void *_private;
- } async;
-};
-
-
-
-/*
- context structure for operations on name queries
-*/
-struct nbt_name_socket {
- struct socket_context *sock;
- struct event_context *event_ctx;
-/*
- struct smb_iconv_convenience *iconv_convenience;
-*/
- /* a queue of requests pending to be sent */
- struct nbt_name_request *send_queue;
-
- /* the fd event */
- struct fd_event *fde;
-
- /* mapping from name_trn_id to pending event */
- struct idr_context *idr;
-
- /* how many requests are waiting for a reply */
- uint16_t num_pending;
-
- /* what to do with incoming request packets */
- struct {
- void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
- struct socket_address *);
- void *_private;
- } incoming;
-
- /* what to do with unexpected replies */
- struct {
- void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
- struct socket_address *);
- void *_private;
- } unexpected;
-};
-
-
-/* a simple name query */
-struct nbt_name_query {
- struct {
- struct nbt_name name;
- const char *dest_addr;
- uint16_t dest_port;
- bool broadcast;
- bool wins_lookup;
- int timeout; /* in seconds */
- int retries;
- } in;
- struct {
- const char *reply_from;
- struct nbt_name name;
- int16_t num_addrs;
- const char **reply_addrs;
- } out;
-};
-
-/* a simple name status query */
-struct nbt_name_status {
- struct {
- struct nbt_name name;
- const char *dest_addr;
- uint16_t dest_port;
- int timeout; /* in seconds */
- int retries;
- } in;
- struct {
- const char *reply_from;
- struct nbt_name name;
- struct nbt_rdata_status status;
- } out;
-};
-
-/* a name registration request */
-struct nbt_name_register {
- struct {
- struct nbt_name name;
- const char *dest_addr;
- uint16_t dest_port;
- const char *address;
- uint16_t nb_flags;
- bool register_demand;
- bool broadcast;
- bool multi_homed;
- uint32_t ttl;
- int timeout; /* in seconds */
- int retries;
- } in;
- struct {
- const char *reply_from;
- struct nbt_name name;
- const char *reply_addr;
- uint8_t rcode;
- } out;
-};
-
-/* a send 3 times then demand name broadcast name registration */
-struct nbt_name_register_bcast {
- struct {
- struct nbt_name name;
- const char *dest_addr;
- uint16_t dest_port;
- const char *address;
- uint16_t nb_flags;
- uint32_t ttl;
- } in;
-};
-
-
-/* wins name register with multiple wins servers to try and multiple
- addresses to register */
-struct nbt_name_register_wins {
- struct {
- struct nbt_name name;
- const char **wins_servers;
- uint16_t wins_port;
- const char **addresses;
- uint16_t nb_flags;
- uint32_t ttl;
- } in;
- struct {
- const char *wins_server;
- uint8_t rcode;
- } out;
-};
-
-
-
-/* a name refresh request */
-struct nbt_name_refresh {
- struct {
- struct nbt_name name;
- const char *dest_addr;
- uint16_t dest_port;
- const char *address;
- uint16_t nb_flags;
- bool broadcast;
- uint32_t ttl;
- int timeout; /* in seconds */
- int retries;
- } in;
- struct {
- const char *reply_from;
- struct nbt_name name;
- const char *reply_addr;
- uint8_t rcode;
- } out;
-};
-
-/* wins name refresh with multiple wins servers to try and multiple
- addresses to register */
-struct nbt_name_refresh_wins {
- struct {
- struct nbt_name name;
- const char **wins_servers;
- uint16_t wins_port;
- const char **addresses;
- uint16_t nb_flags;
- uint32_t ttl;
- } in;
- struct {
- const char *wins_server;
- uint8_t rcode;
- } out;
-};
-
-
-/* a name release request */
-struct nbt_name_release {
- struct {
- struct nbt_name name;
- const char *dest_addr;
- uint16_t dest_port;
- const char *address;
- uint16_t nb_flags;
- bool broadcast;
- int timeout; /* in seconds */
- int retries;
- } in;
- struct {
- const char *reply_from;
- struct nbt_name name;
- const char *reply_addr;
- uint8_t rcode;
- } out;
-};
-
-struct nbt_name_socket *nbt_name_socket_init(TALLOC_CTX *mem_ctx,
- struct event_context *event_ctx);
- /*,
- struct smb_iconv_convenience *iconv_convenience);*/
-struct nbt_name_request *nbt_name_query_send(struct nbt_name_socket *nbtsock,
- struct nbt_name_query *io);
-NTSTATUS nbt_name_query_recv(struct nbt_name_request *req,
- TALLOC_CTX *mem_ctx, struct nbt_name_query *io);
-NTSTATUS nbt_name_query(struct nbt_name_socket *nbtsock,
- TALLOC_CTX *mem_ctx, struct nbt_name_query *io);
-struct nbt_name_request *nbt_name_status_send(struct nbt_name_socket *nbtsock,
- struct nbt_name_status *io);
-NTSTATUS nbt_name_status_recv(struct nbt_name_request *req,
- TALLOC_CTX *mem_ctx, struct nbt_name_status *io);
-NTSTATUS nbt_name_status(struct nbt_name_socket *nbtsock,
- TALLOC_CTX *mem_ctx, struct nbt_name_status *io);
-
-NTSTATUS nbt_name_dup(TALLOC_CTX *mem_ctx, struct nbt_name *name, struct nbt_name *newname);
-NTSTATUS nbt_name_to_blob(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, struct nbt_name *name);
-NTSTATUS nbt_name_from_blob(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, struct nbt_name *name);
-void nbt_choose_called_name(TALLOC_CTX *mem_ctx, struct nbt_name *n, const char *name, int type);
-char *nbt_name_string(TALLOC_CTX *mem_ctx, const struct nbt_name *name);
-NTSTATUS nbt_name_register(struct nbt_name_socket *nbtsock,
- TALLOC_CTX *mem_ctx, struct nbt_name_register *io);
-NTSTATUS nbt_name_refresh(struct nbt_name_socket *nbtsock,
- TALLOC_CTX *mem_ctx, struct nbt_name_refresh *io);
-NTSTATUS nbt_name_release(struct nbt_name_socket *nbtsock,
- TALLOC_CTX *mem_ctx, struct nbt_name_release *io);
-NTSTATUS nbt_name_register_wins(struct nbt_name_socket *nbtsock,
- TALLOC_CTX *mem_ctx,
- struct nbt_name_register_wins *io);
-NTSTATUS nbt_name_refresh_wins(struct nbt_name_socket *nbtsock,
- TALLOC_CTX *mem_ctx,
- struct nbt_name_refresh_wins *io);
-NTSTATUS nbt_name_register_recv(struct nbt_name_request *req,
- TALLOC_CTX *mem_ctx, struct nbt_name_register *io);
-struct nbt_name_request *nbt_name_register_send(struct nbt_name_socket *nbtsock,
- struct nbt_name_register *io);
-NTSTATUS nbt_name_release_recv(struct nbt_name_request *req,
- TALLOC_CTX *mem_ctx, struct nbt_name_release *io);
-
-struct nbt_name_request *nbt_name_release_send(struct nbt_name_socket *nbtsock,
- struct nbt_name_release *io);
-
-NTSTATUS nbt_name_refresh_recv(struct nbt_name_request *req,
- TALLOC_CTX *mem_ctx, struct nbt_name_refresh *io);
-
-NTSTATUS nbt_set_incoming_handler(struct nbt_name_socket *nbtsock,
- void (*handler)(struct nbt_name_socket *, struct nbt_name_packet *,
- struct socket_address *),
- void *_private);
-NTSTATUS nbt_name_reply_send(struct nbt_name_socket *nbtsock,
- struct socket_address *dest,
- struct nbt_name_packet *request);
-
-
-NDR_SCALAR_PROTO(wrepl_nbt_name, const struct nbt_name *);
-NDR_SCALAR_PROTO(nbt_string, const char *);
-NDR_BUFFER_PROTO(nbt_name, struct nbt_name);
-NTSTATUS nbt_rcode_to_ntstatus(uint8_t rcode);
-
-struct composite_context;
-struct composite_context *nbt_name_register_bcast_send(struct nbt_name_socket *nbtsock,
- struct nbt_name_register_bcast *io);
-NTSTATUS nbt_name_register_bcast_recv(struct composite_context *c);
-struct composite_context *nbt_name_register_wins_send(struct nbt_name_socket *nbtsock,
- struct nbt_name_register_wins *io);
-NTSTATUS nbt_name_refresh_wins_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
- struct nbt_name_refresh_wins *io);
-struct composite_context *nbt_name_refresh_wins_send(struct nbt_name_socket *nbtsock,
- struct nbt_name_refresh_wins *io);
-NTSTATUS nbt_name_register_wins_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
- struct nbt_name_register_wins *io);
-
-
-#endif /* __LIBNBT_H__ */
+++ /dev/null
-/*
- Unix SMB/CIFS implementation.
-
- manipulate nbt name structures
-
- Copyright (C) Andrew Tridgell 2005
-
- 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/>.
-*/
-
-/*
- see rfc1002 for the detailed format of compressed names
-*/
-
-#include "includes.h"
-#include "librpc/gen_ndr/ndr_nbt.h"
-#include "librpc/gen_ndr/ndr_misc.h"
-
-/* don't allow an unlimited number of name components */
-#define MAX_COMPONENTS 10
-
-/**
- print a nbt string
-*/
-_PUBLIC_ void ndr_print_nbt_string(struct ndr_print *ndr, const char *name, const char *s)
-{
- ndr_print_string(ndr, name, s);
-}
-
-/*
- pull one component of a nbt_string
-*/
-static enum ndr_err_code ndr_pull_component(struct ndr_pull *ndr,
- uint8_t **component,
- uint32_t *offset,
- uint32_t *max_offset)
-{
- uint8_t len;
- uint_t loops = 0;
- while (loops < 5) {
- if (*offset >= ndr->data_size) {
- return ndr_pull_error(ndr, NDR_ERR_STRING,
- "BAD NBT NAME component");
- }
- len = ndr->data[*offset];
- if (len == 0) {
- *offset += 1;
- *max_offset = MAX(*max_offset, *offset);
- *component = NULL;
- return NDR_ERR_SUCCESS;
- }
- if ((len & 0xC0) == 0xC0) {
- /* its a label pointer */
- if (1 + *offset >= ndr->data_size) {
- return ndr_pull_error(ndr, NDR_ERR_STRING,
- "BAD NBT NAME component");
- }
- *max_offset = MAX(*max_offset, *offset + 2);
- *offset = ((len&0x3F)<<8) | ndr->data[1 + *offset];
- *max_offset = MAX(*max_offset, *offset);
- loops++;
- continue;
- }
- if ((len & 0xC0) != 0) {
- /* its a reserved length field */
- return ndr_pull_error(ndr, NDR_ERR_STRING,
- "BAD NBT NAME component");
- }
- if (*offset + len + 2 > ndr->data_size) {
- return ndr_pull_error(ndr, NDR_ERR_STRING,
- "BAD NBT NAME component");
- }
- *component = (uint8_t*)talloc_strndup(ndr, (const char *)&ndr->data[1 + *offset], len);
- NDR_ERR_HAVE_NO_MEMORY(*component);
- *offset += len + 1;
- *max_offset = MAX(*max_offset, *offset);
- return NDR_ERR_SUCCESS;
- }
-
- /* too many pointers */
- return ndr_pull_error(ndr, NDR_ERR_STRING, "BAD NBT NAME component");
-}
-
-/**
- pull a nbt_string from the wire
-*/
-_PUBLIC_ enum ndr_err_code ndr_pull_nbt_string(struct ndr_pull *ndr, int ndr_flags, const char **s)
-{
- uint32_t offset = ndr->offset;
- uint32_t max_offset = offset;
- unsigned num_components;
- char *name;
-
- if (!(ndr_flags & NDR_SCALARS)) {
- return NDR_ERR_SUCCESS;
- }
-
- name = NULL;
-
- /* break up name into a list of components */
- for (num_components=0;num_components<MAX_COMPONENTS;num_components++) {
- uint8_t *component = NULL;
- NDR_CHECK(ndr_pull_component(ndr, &component, &offset, &max_offset));
- if (component == NULL) break;
- if (name) {
- name = talloc_asprintf_append_buffer(name, ".%s", component);
- NDR_ERR_HAVE_NO_MEMORY(name);
- } else {
- name = (char *)component;
- }
- }
- if (num_components == MAX_COMPONENTS) {
- return ndr_pull_error(ndr, NDR_ERR_STRING,
- "BAD NBT NAME too many components");
- }
- if (num_components == 0) {
- name = talloc_strdup(ndr, "");
- NDR_ERR_HAVE_NO_MEMORY(name);
- }
-
- (*s) = name;
- ndr->offset = max_offset;
-
- return NDR_ERR_SUCCESS;
-}
-
-/**
- push a nbt string to the wire
-*/
-_PUBLIC_ enum ndr_err_code ndr_push_nbt_string(struct ndr_push *ndr, int ndr_flags, const char *s)
-{
- if (!(ndr_flags & NDR_SCALARS)) {
- return NDR_ERR_SUCCESS;
- }
-
- while (s && *s) {
- enum ndr_err_code ndr_err;
- char *compname;
- size_t complen;
- uint32_t offset;
-
- /* see if we have pushed the remaing string allready,
- * if so we use a label pointer to this string
- */
- ndr_err = ndr_token_retrieve_cmp_fn(&ndr->nbt_string_list, s, &offset, (comparison_fn_t)strcmp, false);
- if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- uint8_t b[2];
-
- if (offset > 0x3FFF) {
- return ndr_push_error(ndr, NDR_ERR_STRING,
- "offset for nbt string label pointer %u[%08X] > 0x00003FFF",
- offset, offset);
- }
-
- b[0] = 0xC0 | (offset>>8);
- b[1] = (offset & 0xFF);
-
- return ndr_push_bytes(ndr, b, 2);
- }
-
- complen = strcspn(s, ".");
-
- /* we need to make sure the length fits into 6 bytes */
- if (complen >= 0x3F) {
- return ndr_push_error(ndr, NDR_ERR_STRING,
- "component length %u[%08X] > 0x00003F",
- (unsigned)complen, (unsigned)complen);
- }
-
- compname = talloc_asprintf(ndr, "%c%*.*s",
- (unsigned char)complen,
- (unsigned char)complen,
- (unsigned char)complen, s);
- NDR_ERR_HAVE_NO_MEMORY(compname);
-
- /* remember the current componemt + the rest of the string
- * so it can be reused later
- */
- NDR_CHECK(ndr_token_store(ndr, &ndr->nbt_string_list, s, ndr->offset));
-
- /* push just this component into the blob */
- NDR_CHECK(ndr_push_bytes(ndr, (const uint8_t *)compname, complen+1));
- talloc_free(compname);
-
- s += complen;
- if (*s == '.') s++;
- }
-
- /* if we reach the end of the string and have pushed the last component
- * without using a label pointer, we need to terminate the string
- */
- return ndr_push_bytes(ndr, (const uint8_t *)"", 1);
-}
-
-
-/*
- decompress a 'compressed' name component
- */
-static bool decompress_name(char *name, enum nbt_name_type *type)
-{
- int i;
- for (i=0;name[2*i];i++) {
- uint8_t c1 = name[2*i];
- uint8_t c2 = name[1+(2*i)];
- if (c1 < 'A' || c1 > 'P' ||
- c2 < 'A' || c2 > 'P') {
- return false;
- }
- name[i] = ((c1-'A')<<4) | (c2-'A');
- }
- name[i] = 0;
- if (i == 16) {
- *type = (enum nbt_name_type)(name[15]);
- name[15] = 0;
- i--;
- } else {
- *type = NBT_NAME_CLIENT;
- }
-
- /* trim trailing spaces */
- for (;i>0 && name[i-1]==' ';i--) {
- name[i-1] = 0;
- }
-
- return true;
-}
-
-
-/*
- compress a name component
- */
-static uint8_t *compress_name(TALLOC_CTX *mem_ctx,
- const uint8_t *name, enum nbt_name_type type)
-{
- uint8_t *cname;
- int i;
- uint8_t pad_char;
-
- if (strlen((const char *)name) > 15) {
- return NULL;
- }
-
- cname = talloc_array(mem_ctx, uint8_t, 33);
- if (cname == NULL) return NULL;
-
- for (i=0;name[i];i++) {
- cname[2*i] = 'A' + (name[i]>>4);
- cname[1+2*i] = 'A' + (name[i]&0xF);
- }
- if (strcmp((const char *)name, "*") == 0) {
- pad_char = 0;
- } else {
- pad_char = ' ';
- }
- for (;i<15;i++) {
- cname[2*i] = 'A' + (pad_char>>4);
- cname[1+2*i] = 'A' + (pad_char&0xF);
- }
-
- pad_char = type;
- cname[2*i] = 'A' + (pad_char>>4);
- cname[1+2*i] = 'A' + (pad_char&0xF);
-
- cname[32] = 0;
- return cname;
-}
-
-
-/**
- pull a nbt name from the wire
-*/
-_PUBLIC_ enum ndr_err_code ndr_pull_nbt_name(struct ndr_pull *ndr, int ndr_flags, struct nbt_name *r)
-{
- uint8_t *scope;
- char *cname;
- const char *s;
- bool ok;
-
- if (!(ndr_flags & NDR_SCALARS)) {
- return NDR_ERR_SUCCESS;
- }
-
- NDR_CHECK(ndr_pull_nbt_string(ndr, ndr_flags, &s));
-
- scope = (uint8_t *)strchr(s, '.');
- if (scope) {
- *scope = 0;
- r->scope = talloc_strdup(ndr->current_mem_ctx, (const char *)&scope[1]);
- NDR_ERR_HAVE_NO_MEMORY(r->scope);
- } else {
- r->scope = NULL;
- }
-
- cname = discard_const_p(char, s);
-
- /* the first component is limited to 16 bytes in the DOS charset,
- which is 32 in the 'compressed' form */
- if (strlen(cname) > 32) {
- return ndr_pull_error(ndr, NDR_ERR_STRING,
- "NBT NAME cname > 32");
- }
-
- /* decompress the first component */
- ok = decompress_name(cname, &r->type);
- if (!ok) {
- return ndr_pull_error(ndr, NDR_ERR_STRING,
- "NBT NAME failed to decompress");
- }
-
- r->name = talloc_strdup(ndr->current_mem_ctx, cname);
- NDR_ERR_HAVE_NO_MEMORY(r->name);
-
- talloc_free(cname);
-
- return NDR_ERR_SUCCESS;
-}
-
-/**
- push a nbt name to the wire
-*/
-_PUBLIC_ enum ndr_err_code ndr_push_nbt_name(struct ndr_push *ndr, int ndr_flags, const struct nbt_name *r)
-{
- uint8_t *cname, *fullname;
- enum ndr_err_code ndr_err;
-
- if (!(ndr_flags & NDR_SCALARS)) {
- return NDR_ERR_SUCCESS;
- }
-
- if (strlen(r->name) > 15) {
- return ndr_push_error(ndr, NDR_ERR_STRING,
- "nbt_name longer as 15 chars: %s",
- r->name);
- }
-
- cname = compress_name(ndr, (const uint8_t *)r->name, r->type);
- NDR_ERR_HAVE_NO_MEMORY(cname);
-
- if (r->scope) {
- fullname = (uint8_t *)talloc_asprintf(ndr, "%s.%s", cname, r->scope);
- NDR_ERR_HAVE_NO_MEMORY(fullname);
- talloc_free(cname);
- } else {
- fullname = cname;
- }
-
- ndr_err = ndr_push_nbt_string(ndr, ndr_flags, (const char *)fullname);
-
- return ndr_err;
-}
-
-
-/**
- copy a nbt name structure
-*/
-_PUBLIC_ NTSTATUS nbt_name_dup(TALLOC_CTX *mem_ctx, struct nbt_name *name, struct nbt_name *newname)
-{
- *newname = *name;
- newname->name = talloc_strdup(mem_ctx, newname->name);
- NT_STATUS_HAVE_NO_MEMORY(newname->name);
- newname->scope = talloc_strdup(mem_ctx, newname->scope);
- if (name->scope) {
- NT_STATUS_HAVE_NO_MEMORY(newname->scope);
- }
- return NT_STATUS_OK;
-}
-
-/**
- push a nbt name into a blob
-*/
-_PUBLIC_ NTSTATUS nbt_name_to_blob(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, struct nbt_name *name)
-{
- enum ndr_err_code ndr_err;
-
- ndr_err = ndr_push_struct_blob(blob, mem_ctx, name, (ndr_push_flags_fn_t)ndr_push_nbt_name);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- return ndr_map_error2ntstatus(ndr_err);
- }
-
- return NT_STATUS_OK;
-}
-
-/**
- pull a nbt name from a blob
-*/
-_PUBLIC_ NTSTATUS nbt_name_from_blob(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob, struct nbt_name *name)
-{
- enum ndr_err_code ndr_err;
-
- ndr_err = ndr_pull_struct_blob(blob, mem_ctx, name,
- (ndr_pull_flags_fn_t)ndr_pull_nbt_name);
- if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- return ndr_map_error2ntstatus(ndr_err);
- }
-
- return NT_STATUS_OK;
-}
-
-
-/**
- choose a name to use when calling a server in a NBT session request.
- we use heuristics to see if the name we have been given is a IP
- address, or a too-long name. If it is then use *SMBSERVER, or a
- truncated name
-*/
-_PUBLIC_ void nbt_choose_called_name(TALLOC_CTX *mem_ctx,
- struct nbt_name *n, const char *name, int type)
-{
- n->scope = NULL;
- n->type = type;
-
- if ((name == NULL) || is_ipaddress(name)) {
- n->name = "*SMBSERVER";
- return;
- }
- if (strlen(name) > 15) {
- const char *p = strchr(name, '.');
- char *s;
- if (p - name > 15) {
- n->name = "*SMBSERVER";
- return;
- }
- s = talloc_strndup(mem_ctx, name, PTR_DIFF(p, name));
- n->name = talloc_strdup_upper(mem_ctx, s);
- return;
- }
-
- n->name = talloc_strdup_upper(mem_ctx, name);
-}
-
-
-/*
- escape a string into a form containing only a small set of characters,
- the rest is hex encoded. This is similar to URL encoding
-*/
-static const char *nbt_hex_encode(TALLOC_CTX *mem_ctx, const char *s)
-{
- int i, len;
- char *ret;
- const char *valid_chars = "_-.$@ ";
-#define NBT_CHAR_ALLOW(c) (isalnum((unsigned char)c) || strchr(valid_chars, c))
-
- for (len=i=0;s[i];i++,len++) {
- if (!NBT_CHAR_ALLOW(s[i])) {
- len += 2;
- }
- }
-
- ret = talloc_array(mem_ctx, char, len+1);
- if (ret == NULL) return NULL;
-
- for (len=i=0;s[i];i++) {
- if (NBT_CHAR_ALLOW(s[i])) {
- ret[len++] = s[i];
- } else {
- snprintf(&ret[len], 4, "%%%02x", (unsigned char)s[i]);
- len += 3;
- }
- }
- ret[len] = 0;
-
- return ret;
-}
-
-
-/**
- form a string for a NBT name
-*/
-_PUBLIC_ char *nbt_name_string(TALLOC_CTX *mem_ctx, const struct nbt_name *name)
-{
- TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
- char *ret;
- if (name->scope) {
- ret = talloc_asprintf(mem_ctx, "%s<%02x>-%s",
- nbt_hex_encode(tmp_ctx, name->name),
- name->type,
- nbt_hex_encode(tmp_ctx, name->scope));
- } else {
- ret = talloc_asprintf(mem_ctx, "%s<%02x>",
- nbt_hex_encode(tmp_ctx, name->name),
- name->type);
- }
- talloc_free(tmp_ctx);
- return ret;
-}
-
-/**
- pull a nbt name, WINS Replication uses another on wire format for nbt name
-*/
-_PUBLIC_ enum ndr_err_code ndr_pull_wrepl_nbt_name(struct ndr_pull *ndr, int ndr_flags, const struct nbt_name **_r)
-{
- struct nbt_name *r;
- uint8_t *namebuf;
- uint32_t namebuf_len;
-
- if (!(ndr_flags & NDR_SCALARS)) {
- return NDR_ERR_SUCCESS;
- }
-
- NDR_CHECK(ndr_pull_align(ndr, 4));
- NDR_CHECK(ndr_pull_uint32(ndr, NDR_SCALARS, &namebuf_len));
- if (namebuf_len < 1 || namebuf_len > 255) {
- return ndr_pull_error(ndr, NDR_ERR_ALLOC, "value out of range");
- }
- NDR_PULL_ALLOC_N(ndr, namebuf, namebuf_len);
- NDR_CHECK(ndr_pull_array_uint8(ndr, NDR_SCALARS, namebuf, namebuf_len));
-
- NDR_PULL_ALLOC(ndr, r);
-
- /* oh wow, what a nasty bug in windows ... */
- if (namebuf[0] == 0x1b && namebuf_len >= 16) {
- namebuf[0] = namebuf[15];
- namebuf[15] = 0x1b;
- }
-
- if (namebuf_len < 17) {
- r->type = 0x00;
-
- r->name = talloc_strndup(r, (char *)namebuf, namebuf_len);
- if (!r->name) return ndr_pull_error(ndr, NDR_ERR_ALLOC, "out of memory");
-
- r->scope= NULL;
-
- talloc_free(namebuf);
- *_r = r;
- return NDR_ERR_SUCCESS;
- }
-
- r->type = namebuf[15];
-
- namebuf[15] = '\0';
- trim_string((char *)namebuf, NULL, " ");
- r->name = talloc_strdup(r, (char *)namebuf);
- if (!r->name) return ndr_pull_error(ndr, NDR_ERR_ALLOC, "out of memory");
-
- if (namebuf_len > 18) {
- r->scope = talloc_strndup(r, (char *)(namebuf+17), namebuf_len-17);
- if (!r->scope) return ndr_pull_error(ndr, NDR_ERR_ALLOC, "out of memory");
- } else {
- r->scope = NULL;
- }
-
- talloc_free(namebuf);
- *_r = r;
- return NDR_ERR_SUCCESS;
-}
-
-/**
- push a nbt name, WINS Replication uses another on wire format for nbt name
-*/
-_PUBLIC_ enum ndr_err_code ndr_push_wrepl_nbt_name(struct ndr_push *ndr, int ndr_flags, const struct nbt_name *r)
-{
- uint8_t *namebuf;
- uint32_t namebuf_len;
- uint32_t _name_len;
- uint32_t scope_len = 0;
-
- if (r == NULL) {
- return ndr_push_error(ndr, NDR_ERR_INVALID_POINTER,
- "wrepl_nbt_name NULL pointer");
- }
-
- if (!(ndr_flags & NDR_SCALARS)) {
- return NDR_ERR_SUCCESS;
- }
-
- _name_len = strlen(r->name);
- if (_name_len > 15) {
- return ndr_push_error(ndr, NDR_ERR_STRING,
- "wrepl_nbt_name longer as 15 chars: %s",
- r->name);
- }
-
- if (r->scope) {
- scope_len = strlen(r->scope);
- }
- if (scope_len > 238) {
- return ndr_push_error(ndr, NDR_ERR_STRING,
- "wrepl_nbt_name scope longer as 238 chars: %s",
- r->scope);
- }
-
- namebuf = (uint8_t *)talloc_asprintf(ndr, "%-15s%c%s",
- r->name, 'X',
- (r->scope?r->scope:""));
- if (!namebuf) return ndr_push_error(ndr, NDR_ERR_ALLOC, "out of memory");
-
- namebuf_len = strlen((char *)namebuf) + 1;
-
- /*
- * we need to set the type here, and use a place-holder in the talloc_asprintf()
- * as the type can be 0x00, and then the namebuf_len = strlen(namebuf); would give wrong results
- */
- namebuf[15] = r->type;
-
- /* oh wow, what a nasty bug in windows ... */
- if (r->type == 0x1b) {
- namebuf[15] = namebuf[0];
- namebuf[0] = 0x1b;
- }
-
- NDR_CHECK(ndr_push_align(ndr, 4));
- NDR_CHECK(ndr_push_uint32(ndr, NDR_SCALARS, namebuf_len));
- NDR_CHECK(ndr_push_array_uint8(ndr, NDR_SCALARS, namebuf, namebuf_len));
-
- talloc_free(namebuf);
- return NDR_ERR_SUCCESS;
-}
-
-_PUBLIC_ void ndr_print_wrepl_nbt_name(struct ndr_print *ndr, const char *name, const struct nbt_name *r)
-{
- char *s = nbt_name_string(ndr, r);
- ndr_print_string(ndr, name, s);
- talloc_free(s);
-}
git.samba.org / gd / samba / .git / commitdiff