utils: Add smb2-cp a utility to copy files to/from a share

Signed-off-by: Ronnie Sahlberg <[email protected]>

utils/Makefile.am

@@ -1,4 +1,4 @@
-noinst_PROGRAMS = smb2-ls
+noinst_PROGRAMS = smb2-cp smb2-ls
 
 AM_CPPFLAGS = \
 	-I$(abs_top_srcdir)/include \
@@ -8,3 +8,4 @@ AM_CPPFLAGS = \
 
 COMMON_LIBS = ../lib/libsmb2.la
 smb2_ls_LDADD = $(COMMON_LIBS)
+smb2_cp_LDADD = $(COMMON_LIBS)

utils/smb2-cp.c

@@ -0,0 +1,263 @@
+/* 
+   Copyright (C) by Ronnie Sahlberg <[email protected]> 2024
+   
+   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 _FILE_OFFSET_BITS 64
+#define _GNU_SOURCE
+
+#include <inttypes.h>
+#if !defined(__amigaos4__) && !defined(__AMIGA__) && !defined(__AROS__)
+#include <poll.h>
+#endif
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "smb2.h"
+#include "libsmb2.h"
+#include "libsmb2-raw.h"
+
+#ifdef __AROS__
+#include "asprintf.h"
+#endif
+
+struct file_context {
+	int is_smb2;
+	int fd;
+	struct smb2_context *smb2;
+	struct smb2fh *smb2fh;
+	struct smb2_url *url;
+};
+
+void usage(void)
+{
+	fprintf(stderr, "Usage: smb2-cp <src> <dst>\n");
+	fprintf(stderr, "<src>,<dst> can either be a local file or "
+			"an smb2 URL.\n");
+	exit(0);
+}
+
+static void
+free_file_context(struct file_context *file_context)
+{
+	if (file_context->fd != -1) {
+		close(file_context->fd);
+	}
+	if (file_context->smb2fh != NULL) {
+		smb2_close(file_context->smb2, file_context->smb2fh);
+	}
+	if (file_context->smb2 != NULL) {
+		smb2_destroy_context(file_context->smb2);
+	}
+	smb2_destroy_url(file_context->url);
+	free(file_context);
+}
+
+static int
+fstat_file(struct file_context *fc, struct stat *st)
+{
+	if (fc->is_smb2 == 0) {
+		return fstat(fc->fd, st);
+	} else {
+		int res;
+		struct smb2_stat_64 smb2_st;
+		res = smb2_fstat(fc->smb2, fc->smb2fh, &smb2_st);
+		st->st_dev          = 0;
+		st->st_ino          = (ino_t)smb2_st.smb2_ino;
+#ifndef WIN32
+		st->st_mode         = 0;
+		st->st_nlink        = (nlink_t)smb2_st.smb2_nlink;
+		st->st_blksize      = 4096;
+		st->st_blocks       = (smb2_st.smb2_size + 4096 - 1) % 4096;
+#endif
+		st->st_uid          = 0;
+		st->st_gid          = 0;
+		st->st_rdev         = 0;
+		st->st_size         = (off_t)smb2_st.smb2_size;
+		st->st_atime        = smb2_st.smb2_atime;
+		st->st_mtime        = smb2_st.smb2_mtime;
+		st->st_ctime        = smb2_st.smb2_ctime;
+
+		return res;
+	}
+}
+
+static ssize_t
+file_pread(struct file_context *fc, uint8_t *buf, size_t count, off_t off)
+{
+	if (fc->is_smb2 == 0) {
+		lseek(fc->fd, off, SEEK_SET);
+		return read(fc->fd, buf, count);
+	} else {
+		return smb2_pread(fc->smb2, fc->smb2fh, buf, count, off);
+	}
+}
+
+static ssize_t
+file_pwrite(struct file_context *fc, uint8_t *buf, size_t count, off_t off)
+{
+	if (fc->is_smb2 == 0) {
+		lseek(fc->fd, off, SEEK_SET);
+		return write(fc->fd, buf, count);
+	} else {
+		return smb2_pwrite(fc->smb2, fc->smb2fh, buf, count, off);
+	}
+}
+
+static struct file_context *
+open_file(const char *url, int flags)
+{
+	struct file_context *file_context;
+
+	file_context = malloc(sizeof(struct file_context));
+	if (file_context == NULL) {
+		fprintf(stderr, "Failed to malloc file_context\n");
+		return NULL;
+	}
+	file_context->is_smb2 = 0;
+	file_context->fd     = -1;
+	file_context->smb2    = NULL;
+	file_context->smb2fh  = NULL;
+	file_context->url    = NULL;
+
+	if (strncmp(url, "smb://", 6)) {
+		file_context->is_smb2 = 0;
+		file_context->fd = open(url, flags, 0660);
+		if (file_context->fd == -1) {		
+			fprintf(stderr, "Failed to open %s\n", url);
+			free_file_context(file_context);
+			return NULL;
+		}
+		return file_context;
+	}
+
+	file_context->is_smb2 = 1;
+
+	file_context->smb2 = smb2_init_context();
+	if (file_context->smb2 == NULL) {
+		fprintf(stderr, "failed to init context\n");
+		free_file_context(file_context);
+		return NULL;
+	}
+
+	file_context->url = smb2_parse_url(file_context->smb2, url);
+	if (file_context->url == NULL) {
+		fprintf(stderr, "%s\n", smb2_get_error(file_context->smb2));
+		free_file_context(file_context);
+		return NULL;
+	}
+
+	if (smb2_connect_share(file_context->smb2, file_context->url->server,
+			       file_context->url->share,
+			       file_context->url->user) != 0) {
+		fprintf(stderr, "Failed to mount smb2 share : %s\n",
+			       smb2_get_error(file_context->smb2));
+		free_file_context(file_context);
+		return NULL;
+	}
+
+	file_context->smb2fh = smb2_open(file_context->smb2, file_context->url->path, flags);
+	if (file_context->smb2fh == NULL) {
+		fprintf(stderr, "Failed to open file %s: %s\n",
+			       file_context->url->path,
+			       smb2_get_error(file_context->smb2));
+		free_file_context(file_context);
+		return NULL;
+	}
+	return file_context;
+}
+
+#define BUFSIZE 1024*1024
+static uint8_t buf[BUFSIZE];
+
+int main(int argc, char *argv[])
+{
+	struct stat st;
+	struct file_context *src;
+	struct file_context *dst;
+	off_t off;
+	ssize_t count;
+
+#ifdef WIN32
+	if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
+		printf("Failed to start Winsock2\n");
+		return 10;
+	}
+#endif
+
+#ifdef AROS
+	aros_init_socket();
+#endif
+
+	if (argc != 3) {
+		usage();
+	}
+
+	src = open_file(argv[1], O_RDONLY);
+	if (src == NULL) {
+		fprintf(stderr, "Failed to open %s\n", argv[1]);
+		return 10;
+	}
+
+	dst = open_file(argv[2], O_WRONLY|O_CREAT|O_TRUNC);
+	if (dst == NULL) {
+		fprintf(stderr, "Failed to open %s\n", argv[2]);
+		free_file_context(src);
+		return 10;
+	}
+
+	if (fstat_file(src, &st) != 0) {
+		fprintf(stderr, "Failed to fstat source file\n");
+		free_file_context(src);
+		free_file_context(dst);
+		return 10;
+	}
+
+	off = 0;
+	while (off < st.st_size) {
+		count = (size_t)(st.st_size - off);
+		if (count > BUFSIZE) {
+			count = BUFSIZE;
+		}
+		count = file_pread(src, buf, count, off);
+		if (count < 0) {
+			fprintf(stderr, "Failed to read from source file\n");
+			free_file_context(src);
+			free_file_context(dst);
+			return 10;
+		}
+		count = file_pwrite(dst, buf, count, off);
+		if (count < 0) {
+			fprintf(stderr, "Failed to write to dest file\n");
+			free_file_context(src);
+			free_file_context(dst);
+			return 10;
+		}
+
+		off += count;
+	}
+	printf("copied %d bytes\n", (int)off);
+
+	free_file_context(src);
+	free_file_context(dst);
+
+	return 0;
+}