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-rw-r--r--source/libsmb/clientgen.c281
1 files changed, 281 insertions, 0 deletions
diff --git a/source/libsmb/clientgen.c b/source/libsmb/clientgen.c
new file mode 100644
index 00000000000..610af9cc237
--- /dev/null
+++ b/source/libsmb/clientgen.c
@@ -0,0 +1,281 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 1.9.
+ SMB client generic functions
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#define NO_SYSLOG
+
+#include "includes.h"
+
+/*
+ * Change the port number used to call on
+ */
+int cli_set_port(struct cli_state *cli, int port)
+{
+ cli->port = port;
+ return port;
+}
+
+/****************************************************************************
+recv an smb
+****************************************************************************/
+BOOL cli_receive_smb(struct cli_state *cli)
+{
+ BOOL ret;
+
+ /* fd == -1 causes segfaults -- Tom (tom@ninja.nl) */
+ if (cli->fd == -1) return False;
+
+ again:
+ ret = client_receive_smb(cli->fd,cli->inbuf,cli->timeout);
+
+ if (ret) {
+ /* it might be an oplock break request */
+ if (!(CVAL(cli->inbuf, smb_flg) & FLAG_REPLY) &&
+ CVAL(cli->inbuf,smb_com) == SMBlockingX &&
+ SVAL(cli->inbuf,smb_vwv6) == 0 &&
+ SVAL(cli->inbuf,smb_vwv7) == 0) {
+ if (cli->oplock_handler) {
+ int fnum = SVAL(cli->inbuf,smb_vwv2);
+ unsigned char level = CVAL(cli->inbuf,smb_vwv3+1);
+ if (!cli->oplock_handler(cli, fnum, level)) return False;
+ }
+ /* try to prevent loops */
+ CVAL(cli->inbuf,smb_com) = 0xFF;
+ goto again;
+ }
+ }
+
+ /* If the server is not responding, note that now */
+
+ if (!ret) {
+ close(cli->fd);
+ cli->fd = -1;
+ }
+
+ return ret;
+}
+
+/****************************************************************************
+ send an smb to a fd.
+****************************************************************************/
+
+BOOL cli_send_smb(struct cli_state *cli)
+{
+ size_t len;
+ size_t nwritten=0;
+ ssize_t ret;
+
+ /* fd == -1 causes segfaults -- Tom (tom@ninja.nl) */
+ if (cli->fd == -1) return False;
+
+ len = smb_len(cli->outbuf) + 4;
+
+ while (nwritten < len) {
+ ret = write_socket(cli->fd,cli->outbuf+nwritten,len - nwritten);
+ if (ret <= 0) {
+ close(cli->fd);
+ cli->fd = -1;
+ DEBUG(0,("Error writing %d bytes to client. %d\n",
+ (int)len,(int)ret));
+ return False;
+ }
+ nwritten += ret;
+ }
+
+ return True;
+}
+
+/****************************************************************************
+setup basics in a outgoing packet
+****************************************************************************/
+void cli_setup_packet(struct cli_state *cli)
+{
+ cli->rap_error = 0;
+ SSVAL(cli->outbuf,smb_pid,cli->pid);
+ SSVAL(cli->outbuf,smb_uid,cli->vuid);
+ SSVAL(cli->outbuf,smb_mid,cli->mid);
+ if (cli->protocol > PROTOCOL_CORE) {
+ uint16 flags2;
+ SCVAL(cli->outbuf,smb_flg,0x8);
+ flags2 = FLAGS2_LONG_PATH_COMPONENTS;
+ if (cli->capabilities & CAP_UNICODE) {
+ flags2 |= FLAGS2_UNICODE_STRINGS;
+ }
+ if (cli->capabilities & CAP_STATUS32) {
+ flags2 |= FLAGS2_32_BIT_ERROR_CODES;
+ }
+ if (cli->use_spnego) {
+ flags2 |= FLAGS2_EXTENDED_SECURITY;
+ }
+ SSVAL(cli->outbuf,smb_flg2, flags2);
+ }
+}
+
+/****************************************************************************
+setup the bcc length of the packet from a pointer to the end of the data
+****************************************************************************/
+void cli_setup_bcc(struct cli_state *cli, void *p)
+{
+ set_message_bcc(cli->outbuf, PTR_DIFF(p, smb_buf(cli->outbuf)));
+}
+
+
+
+/****************************************************************************
+initialise a client structure
+****************************************************************************/
+void cli_init_creds(struct cli_state *cli, const struct ntuser_creds *usr)
+{
+ /* copy_nt_creds(&cli->usr, usr); */
+ safe_strcpy(cli->domain , usr->domain , sizeof(usr->domain )-1);
+ safe_strcpy(cli->user_name, usr->user_name, sizeof(usr->user_name)-1);
+ memcpy(&cli->pwd, &usr->pwd, sizeof(usr->pwd));
+ cli->ntlmssp_flags = usr->ntlmssp_flags;
+ cli->ntlmssp_cli_flgs = usr != NULL ? usr->ntlmssp_flags : 0;
+
+ DEBUG(10,("cli_init_creds: user %s domain %s flgs: %x\nntlmssp_cli_flgs:%x\n",
+ cli->user_name, cli->domain,
+ cli->ntlmssp_flags,cli->ntlmssp_cli_flgs));
+}
+
+
+/****************************************************************************
+initialise a client structure
+****************************************************************************/
+struct cli_state *cli_initialise(struct cli_state *cli)
+{
+ BOOL alloced_cli = False;
+
+ /* Check the effective uid - make sure we are not setuid */
+ if (is_setuid_root()) {
+ DEBUG(0,("libsmb based programs must *NOT* be setuid root.\n"));
+ return NULL;
+ }
+
+ if (!cli) {
+ cli = (struct cli_state *)malloc(sizeof(*cli));
+ if (!cli)
+ return NULL;
+ ZERO_STRUCTP(cli);
+ alloced_cli = True;
+ }
+
+ if (cli->initialised) {
+ cli_shutdown(cli);
+ }
+
+ ZERO_STRUCTP(cli);
+
+ cli->port = 0;
+ cli->fd = -1;
+ cli->cnum = -1;
+ cli->pid = (uint16)sys_getpid();
+ cli->mid = 1;
+ cli->vuid = UID_FIELD_INVALID;
+ cli->protocol = PROTOCOL_NT1;
+ cli->timeout = 20000; /* Timeout is in milliseconds. */
+ cli->bufsize = CLI_BUFFER_SIZE+4;
+ cli->max_xmit = cli->bufsize;
+ cli->outbuf = (char *)malloc(cli->bufsize);
+ cli->inbuf = (char *)malloc(cli->bufsize);
+ cli->oplock_handler = cli_oplock_ack;
+ cli->use_spnego = True;
+
+ /* Set the CLI_FORCE_DOSERR environment variable to test
+ client routines using DOS errors instead of STATUS32
+ ones. This intended only as a temporary hack. */
+ if (getenv("CLI_FORCE_DOSERR")) {
+ cli->force_dos_errors = True;
+ }
+
+ if (!cli->outbuf || !cli->inbuf)
+ goto error;
+
+ if ((cli->mem_ctx = talloc_init()) == NULL)
+ goto error;
+
+ memset(cli->outbuf, 0, cli->bufsize);
+ memset(cli->inbuf, 0, cli->bufsize);
+
+ cli->nt_pipe_fnum = 0;
+
+ cli->initialised = 1;
+ cli->allocated = alloced_cli;
+
+ return cli;
+
+ /* Clean up after malloc() error */
+
+ error:
+
+ SAFE_FREE(cli->inbuf);
+ SAFE_FREE(cli->outbuf);
+
+ if (alloced_cli)
+ SAFE_FREE(cli);
+
+ return NULL;
+}
+
+/****************************************************************************
+shutdown a client structure
+****************************************************************************/
+void cli_shutdown(struct cli_state *cli)
+{
+ BOOL allocated;
+ SAFE_FREE(cli->outbuf);
+ SAFE_FREE(cli->inbuf);
+
+ data_blob_free(&cli->secblob);
+
+ if (cli->mem_ctx)
+ talloc_destroy(cli->mem_ctx);
+
+#ifdef WITH_SSL
+ if (cli->fd != -1)
+ sslutil_disconnect(cli->fd);
+#endif /* WITH_SSL */
+ if (cli->fd != -1)
+ close(cli->fd);
+ allocated = cli->allocated;
+ ZERO_STRUCTP(cli);
+ if (allocated) {
+ free(cli);
+ }
+}
+
+
+/****************************************************************************
+set socket options on a open connection
+****************************************************************************/
+void cli_sockopt(struct cli_state *cli, char *options)
+{
+ set_socket_options(cli->fd, options);
+}
+
+/****************************************************************************
+set the PID to use for smb messages. Return the old pid.
+****************************************************************************/
+uint16 cli_setpid(struct cli_state *cli, uint16 pid)
+{
+ uint16 ret = cli->pid;
+ cli->pid = pid;
+ return ret;
+}
generated by cgit (git 2.34.1) at 2024-06-02 23:18:18 +0000