/
vmftp.c
2362 lines (1905 loc) · 44.7 KB
/
vmftp.c
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/*
vmftp.c
simple FTP like client for Shared Folder access
Copyright (c) 2006 Ken Kato
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "vmshf.h"
/*
some system dependent stuff...
*/
#if defined(_WIN32) || defined(_MSDOS)
#include <ctype.h>
#include <direct.h>
#include <sys/utime.h>
#define PATH_DELIMIT "\\"
#define FOPEN_READ_MODE "rb"
#define FOPEN_WRITE_MODE "wb"
#define create_dir(dir) mkdir(dir)
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <io.h>
typedef long dir_t;
#else /* !_WIN32 */
#include <dos.h>
#include <signal.h>
typedef struct find_t dir_t;
#endif /* !_WIN32 */
#else /* !(defined(_WIN32) || defined(_MSDOS)) */
#include <dirent.h>
#include <signal.h>
#include <unistd.h>
#include <utime.h>
#define PATH_DELIMIT "/"
#define FOPEN_READ_MODE "r"
#define FOPEN_WRITE_MODE "w"
#define create_dir(dir) mkdir(dir, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)
typedef struct _dir_t {
DIR *dir;
char path[VMSHF_MAX_PATH];
} dir_t;
#endif /* !(defined(_WIN32) || defined(_MSDOS)) */
/*
local functions
*/
static int parse_input(char *cmd, char **arg1, char **arg2);
static uint32_t normalize_path(char *str);
static const char *format_filetime(uint64_t value);
static void local_fullpath(char *dst, const char *src);
static void remote_fullpath(char *dst, const char *src);
static void safe_fullpath(char *path, int outward);
static void vmftp_put(const shf_t *shf, const char *local, const char *remote);
static int vmftp_putdir(const shf_t *shf, char *local, char *remote, uint32_t *files, uint64_t *bytes, const char *pattern);
static int vmftp_putfile(const shf_t *shf, const char *local, const char *remote, uint64_t *total, time_t modtime);
static void vmftp_get(const shf_t *shf, const char *local, const char *remote);
static int vmftp_getdir(const shf_t *shf, char *local, char *remote, uint32_t *files, uint64_t *bytes, const char *pattern);
static int vmftp_getfile(const shf_t *shf, const char *local, const char *remote, uint64_t *total, time_t modtime);
static void vmftp_ls(const shf_t *shf, const char *dirname);
static void vmftp_cd(const shf_t *shf, const char *dirname);
static void vmftp_lcd(const char *dirname);
static void vmftp_chmod(const shf_t *shf, const char *mode, const char *file);
static void vmftp_mkdir(const shf_t *shf, const char *dirname);
static void vmftp_delete(const shf_t *shf, const char *filename);
static void vmftp_rename(const shf_t *shf, const char *oldname, const char *newname);
static void vmftp_rmdir(const shf_t *shf, const char *dirname);
static void ignore_signal(void);
static void capture_signal(void);
static int get_dirent_first(dir_t *dir, const char *dirname, char *name, int *dirflag, time_t *modtime);
static int get_dirent(dir_t *dir, char *name, int *dirflag, time_t *modtime);
static int close_dir(const dir_t *dir);
static int pattern_match(const char *name, const char *pattern, int case_sensitive);
/*
static variables
*/
/* Ctrl+C indicator during file transfer */
static int vmftp_aborted = 0;
/* working directory in the host */
static char remote_cwd[1024];
/* vmftp command constants */
enum {
COMMAND_SHELL = 0,
COMMAND_HELP,
COMMAND_BYE,
COMMAND_CD,
COMMAND_CHMOD,
COMMAND_DEBUG,
COMMAND_DEL,
COMMAND_GET,
COMMAND_LCD,
COMMAND_LS,
COMMAND_MKDIR,
COMMAND_PUT,
COMMAND_PWD,
COMMAND_QUIT,
COMMAND_REN,
COMMAND_RMDIR,
NO_MATCH = -1
};
static const struct {
const char *cmd;
const char *help;
}
commands[] = {
{ "!", "! [command [args]]\n"
" Invoke an interactive shell on the local (guest) machine. If there are\n"
" arguments, the first is taken to be a command to execute directly, with\n"
" the rest of the arguments as its arguments.\n" },
{ "?", "? [command]\n"
" Print an informative message about the meaning of <command>. If no\n"
" argument is given, vmftp prints a list of the known commands.\n" },
{ "bye", "bye Terminate the vmftp session and exit. An end of file will also\n"
" terminate the session and exit.\n" },
{ "cd", "cd [remote-directory]\n"
" Change the working directory on the remote (host) machine to <remote-\n"
" directory>. If no directory is specified, the root is used.\n" },
{ "chmod", "chmod <mode> <remote-file>\n"
" Change the permission modes of the file <remote-file> on the remote\n"
" (host) system to <mode>. <mode> must be one of '+r', '-r', '+w', '-w',\n"
" '+r' or '-r'. Combinations of more than one or unix-style octal values\n"
" (e.g. 644) are not acceptable. 'r' and 'x' modes do not have an effect\n"
" on Windows host.\n" },
{ "debug", "debug Toggle debugging mode. When debugging is on, vmftp prints parameters\n"
" and status of each shared folder function it executes.\n" },
{ "delete", "delete <remote-file>\n"
" Delete the file <remote-file> on the remote (host) machine.\n" },
{ "get", "get <remote-file> [local-file]\n"
" Retrieve the file <remote-file> and store it on the local (guest)\n"
" machine. If the local file name is not specified, the remote file name\n"
" is used. Existing local file is overwritten unless the file has the\n"
" write permission disabled.\n" },
{ "lcd", "lcd [directory]\n"
" Change the working directory on the local (guest) machine. If no\n"
" directory is specified, the user's home directory is used.\n" },
{ "ls", "ls [remote-directory]\n"
" Print a listing of the directory contents in the <remote-directory>.\n"
" If no directory is specified, the current working directory on the\n"
" remote (host) machine is used.\n" },
{ "mkdir", "mkdir <directory-name>\n"
" Create a directory on the remote (host) machine.\n" },
{ "put", "put <local-file> [remote-file]\n"
" Send the file <local-file> and store it on the remote (host) machine.\n"
" If the remote file name is not specified, the local file name is used\n"
" Existing remote file is overwritten unless the file has the write\n"
" permission disabled.\n" },
{ "pwd", "pwd Print the current working directory on the remote (host) machine.\n" },
{ "quit", "quit A synonym for bye.\n" },
{ "rename", "rename <from> <to>\n"
" Rename the file <from> on the remote (host) machine, to the file <to>.\n" },
{ "rmdir", "rmdir <directory-name>\n"
" Delete a directory on the remote (host) machine.\n" },
{ NULL, NULL }
};
/*
vmftp main function
*/
int main(void)
{
shf_t shf;
char input_buf[1024];
int ret;
/*
check if running in VMware
*/
ret = VMCheckVirtual();
if (ret != VMTOOL_SUCCESS) {
return ret;
}
/*
open an RPC channel for shared folder access
*/
ret = VMShfBeginSession(&shf);
if (ret != VMTOOL_SUCCESS) {
printf("Cannot access Shared Folders.\n");
return ret;
}
/*
set signal handler to catch Ctrl+C
*/
ignore_signal();
/*
show title banner
*/
printf(
"VMware guest file transfer program - Copyright (c) 2006 Ken Kato\n");
#ifdef _MSDOS
/*
check TZ environment
*/
if (getenv("TZ") == NULL) {
printf(
"TZ environment is not set. File date/time are handled in GMT.\n");
_putenv("TZ=GMT+0");
}
#endif
printf("Type '?' for a list of available commands\n");
for (;;) {
char *arg1, *arg2;
printf("vmftp> ");
fflush(stdout);
while (fgets(input_buf, sizeof(input_buf), stdin) == NULL) {
if (feof(stdin)) {
goto quit_ftp;
}
}
switch (parse_input(input_buf, &arg1, &arg2)) {
case COMMAND_SHELL:
/* escape to shell */
if (!arg1 || !*arg1) {
#if defined(_WIN32)
if ((arg1 = getenv("COMSPEC")) == NULL) {
if ((GetVersion() & 0x80000000) == 0) {
/* NT systems */
arg1 = "cmd.exe";
}
else {
/* Win 9x */
arg1 = "command.com";
}
}
#elif defined(_MSDOS)
if ((arg1 = getenv("COMSPEC")) == NULL) {
arg1 = "command.com";
}
#else
if ((arg1 = getenv("SHELL")) == NULL) {
arg1 = "/bin/sh";
}
#endif
}
system(arg1);
break;
case COMMAND_HELP:
ret = parse_input(arg1, NULL, NULL);
if (ret >= 0) {
printf("%s\n", commands[ret].help);
}
else {
int i = 0;
while (commands[i].cmd) {
printf("%-8.8s", commands[i++].cmd);
if (i % 8 == 0) {
printf("\n");
}
}
if (i % 8) {
printf("\n");
}
printf("Type '? <command>' for details\n");
}
break;
case COMMAND_BYE:
case COMMAND_QUIT:
goto quit_ftp;
case COMMAND_CD:
vmftp_cd(&shf, arg1);
break;
case COMMAND_CHMOD:
vmftp_chmod(&shf, arg1, arg2);
break;
case COMMAND_DEBUG:
vmshf_debug = !vmshf_debug;
printf("Debug mode %s\n", vmshf_debug ? "on" : "off");
break;
case COMMAND_DEL:
vmftp_delete(&shf, arg1);
break;
case COMMAND_LS:
vmftp_ls(&shf, arg1);
break;
case COMMAND_GET:
vmftp_get(&shf, arg2, arg1);
break;
case COMMAND_LCD:
vmftp_lcd(arg1);
break;
case COMMAND_MKDIR:
vmftp_mkdir(&shf, arg1);
break;
case COMMAND_PUT:
vmftp_put(&shf, arg1, arg2);
break;
case COMMAND_PWD:
printf("/%s\n", remote_cwd);
break;
case COMMAND_REN:
vmftp_rename(&shf, arg1, arg2);
break;
case COMMAND_RMDIR:
vmftp_rmdir(&shf, arg1);
break;
}
}
quit_ftp:
/*
close the RPC channel
*/
VMShfEndSession(&shf);
return VMTOOL_SUCCESS;
}
/*
parse command input
*/
static int parse_input(char *cmd, char **arg1, char **arg2)
{
int len;
int idx;
int match;
char *p;
if (!cmd) {
return NO_MATCH;
}
if (arg1) {
*arg1 = NULL;
}
if (arg2) {
*arg2 = NULL;
}
/* skip leading blanks */
while (*cmd == ' ' || *cmd == '\t' || *cmd == '\n') {
cmd++;
}
if (!*cmd) {
return NO_MATCH;
}
/* special cases where command does not need a delimiter */
if (*cmd == '!' || *cmd == '?') {
if (arg1) {
p = cmd + 1;
while (*p == ' ' || *p == '\t' || *p == '\n') {
p++;
}
if (*p) {
*arg1 = p;
while (*(++p)) {
if (*p == '\n') {
*p = '\0';
break;
}
}
}
}
return *cmd == '!' ? COMMAND_SHELL : COMMAND_HELP;
}
/* command is delimited with space, tab or newline */
len = strcspn(cmd, " \t\n");
if (len == 0) {
return NO_MATCH;
}
idx = 0;
match = NO_MATCH;
while (commands[idx].cmd) {
if (!strncmp(cmd, commands[idx].cmd, len)) {
if (match == NO_MATCH) { /* first match */
match = idx;
}
else { /* multiple matches */
printf("Ambiguous command\n");
return NO_MATCH;
}
}
idx++;
}
if (match == NO_MATCH) { /* match not found */
printf("Invalid command\n");
return match;
}
/* get arguments */
p = cmd + len;
while (*p == ' ' || *p == '\t' || *p == '\n') {
p++;
}
if (arg1 && *p) {
*arg1 = p;
if (*p == '\"') {
(*arg1)++;
while (*(++p)) {
if (*p == '\"') {
*(p++) = '\0';
break;
}
}
}
else {
while (*(++p)) {
if (*p == ' ' || *p == '\t' || *p == '\n') {
*(p++) = '\0';
break;
}
}
}
}
while (*p == ' ' || *p == '\t' || *p == '\n') {
p++;
}
if (arg2 && *p) {
*arg2 = p;
if (*p == '\"') {
(*arg2)++;
while (*(++p)) {
if (*p == '\"') {
*(p++) = '\0';
break;
}
}
}
else {
while (*(++p)) {
if (*p == ' ' || *p == '\t' || *p == '\n') {
*(p++) = '\0';
break;
}
}
}
}
return match;
}
/*
normalize a path string
*/
static uint32_t normalize_path(
char *str)
{
uint32_t i = 0, j = 0;
#if defined(_WIN32) || defined(_MSDOS)
/* leave "x:" at the top */
if (isalpha(*str) && *(str + 1) == ':' &&
(*(str + 2) == '\\' || *(str + 2) == '/')) {
str += 2;
}
#else
/* leave a "/" at the top */
/*
if (*str == '/') {
str++;
}
*/
#endif
while (*(str + i)) {
if (*(str + i) == '/' || *(str + i) == '\\') {
/* a path component delimiter */
*(str + j++) = '/';
/* skip repeating delimiters */
i++;
while (*(str + i) == '/' || *(str + i) == '\\') {
i++;
}
}
else if (*(str + i) == '.' &&
(*(str + i + 1) == '\0' || *(str + i + 1) == '/' || *(str + i + 1) == '\\')) {
/* skip a '.' component */
i++;
while (*(str + i) == '/' || *(str + i) == '\\') {
i++;
}
}
else if (*(str + i) == '.' && *(str + i + 1) == '.' &&
(*(str + i + 2) == '\0' || *(str + i + 2) == '/' || *(str + i + 2) == '\\')) {
/* skip a '..' component */
i += 2;
while (*(str + i) == '/' || *(str + i) == '\\') {
i++;
}
/* go back to the previous '/' */
if (j > 1) {
while (--j) {
if (*(str + j - 1) == '/') {
break;
}
}
}
}
else {
/* copy one path component */
while (*(str + i) != '\0' && *(str + i) != '/' && *(str + i) != '\\') {
*(str + j++) = *(str + i++);
}
}
}
/* remove trailing '/' or '\\' */
if (j > 1 && *(str + j - 1) == '/') {
j--;
}
/* terminated the result path */
*(str + j) = '\0';
/* return result len */
return j;
}
/*
format a 64 bit file time value into a printable string
*/
static const char *format_filetime(
uint64_t value)
{
static char buf[30];
time_t t;
struct tm *l;
t = (time_t)FtimeToTime(value, NULL);
l = localtime(&t);
sprintf(buf, "%04d-%02d-%02d %02d:%02d:%02d",
l->tm_year + 1900, l->tm_mon + 1, l->tm_mday,
l->tm_hour, l->tm_min, l->tm_sec);
return buf;
}
/*
format a 64 bit file size value into a comma separated string
*/
static const char *format_filesize(
uint64_t value)
{
static char buf[30] = { 0 };
uint32_t divisor;
uint32_t remainder;
int place;
char *p;
p = &buf[29];
divisor = 10;
place = 0;
for (;;) {
/* r = v % d; v = v / d */
U64DIV32(value, remainder, value, divisor);
*(--p) = (char)('0' + remainder);
if (U64HI(value) == 0 && U64LO(value) == 0) {
return p;
}
if (++place == 3) {
*(--p) = ',';
place = 0;
}
}
}
/*
convert a local filename into a fullpath
*/
static void local_fullpath(
char *dst,
const char *src)
{
if (!src || !*src) {
/* no file specified - use cwd */
getcwd(dst, VMSHF_MAX_PATH);
}
else if (*src == '/' || *src == '\\'
#if defined(_WIN32) || defined(_MSDOS)
|| (isalpha(*src) && *(src + 1) == ':')
#endif
) {
/* full path is specified */
strcpy(dst, src);
}
else {
/* combine the cwd with specified path */
char cwd[VMSHF_MAX_PATH];
getcwd(cwd, sizeof(cwd));
sprintf(dst, "%s" PATH_DELIMIT "%s", cwd, src);
}
normalize_path(dst);
}
/*
convert a remote filename into a fullpath
*/
static void remote_fullpath(
char *dst,
const char *src)
{
if (!src || !*src) {
/* no destination -- use cwd */
strcpy(dst, remote_cwd);
}
else if (remote_cwd[0] == '\0' || *src == '/' || *src == '\\') {
/* cwd is root or full path is specified */
while (*src == '/' || *src == '\\') {
/* skip leading delimiters */
src++;
}
strcpy(dst, src);
}
else {
/* combine remote cwd with specified path */
sprintf(dst, "%s/%s", remote_cwd, src);
}
normalize_path(dst);
}
/*
create a safe path string
(remove blanks, special characters, etc)
*/
static void safe_fullpath(
char *path,
int outward)
{
char *p = path;
if (outward) {
/* create a safe path for the host */
/* replace special characters with '_' */
while (*p) {
if ((*p > 0 && *p < ' ') || *p == '\"' || *p == '*' || *p ==':' ||
*p == '<' || *p == '>' || *p == '?' || *p == '|') {
/* any other characters to avoid ? */
*(path++) = '_';
p++;
}
else {
*(path++) = *(p++);
}
}
*path = '\0';
}
else {
/* create a safe path for the guest */
#if defined(_WIN32) || defined(_MSDOS)
/* leave leading "x:\" as it is */
if (isalpha(*p) && *(p + 1) == ':' &&
(*(p + 2) == '/' || *(p + 2) == '\\')) {
path += 3;
p = path;
}
#endif
#ifdef _MSDOS
/* convert each path component into 8.3 format */
{
char name[12];
int nam_len = 0, ext_len = -1;
for (;;) {
if (*p == '\0' || *p == '/' || *p == '\\') {
/* path delimiter or end of path */
/* -- store current component and reset counters */
if (nam_len > 0) {
memcpy(path, name, nam_len);
path += nam_len;
}
if (ext_len > 0) {
*(path++) = '.';
memcpy(path, &name[nam_len], ext_len);
path += ext_len;
}
nam_len = 0;
ext_len = -1;
if (*p) {
*(path++) = '\\';
}
else {
break;
}
}
else if (*p == '.') {
/* period -- start extension */
if (ext_len > 0) {
/* more than one period is present */
if ((nam_len += ext_len) > 8) {
nam_len = 8;
}
}
ext_len = 0;
}
else if ((*p > 0 && *p <= ' ') || *p == '\"' || *p == '*' ||
*p == '+' || *p == ',' || *p == ':' || *p == ';' ||
*p == '<' || *p == '=' || *p == '>' || *p == '?' ||
*p == '[' || *p == ']' || *p == '|') {
/* replace special characters with '_' */
/* any other characters to avoid ? */
if (ext_len >= 0) { /* extension present */
if (ext_len < 3) { /* less than 3 chars */
name[nam_len + ext_len++] = '_';
}
}
else {
if (nam_len < 8) { /* name less than 8 chars */
name[nam_len++] = '_';
}
}
}
else {
/* normal characters */
if (ext_len >= 0) { /* extension present */
if (ext_len < 3) { /* less than 3 chars */
name[nam_len + ext_len++] = toupper(*p);
}
}
else {
if (nam_len < 8) { /* name less than 8 chars */
name[nam_len++] = toupper(*p);
}
}
}
p++;
}
}
#else
while (*p) {
if ((*p > 0 && *p < ' ') || *p == '\"' || *p == '*' || *p ==':' ||
*p == '<' || *p == '>' || *p == '?' || *p == '|') {
/* any other characters to avoid ? */
*(path++) = '_';
p++;
}
else {
*(path++) = *(p++);
}
}
#endif
*path = '\0';
}
}
/*
send file/dir to the host
*/
static void vmftp_put(
const shf_t *shf,
const char *local,
const char *remote)
{
char local_path[VMSHF_MAX_PATH];
char remote_path[VMSHF_MAX_PATH];
char pattern[VMSHF_MAX_PATH] = {0};
struct stat st;
uint64_t total;
time_t before, after;
int complete;
if (!local || !*local) {
printf("Invalid Parameter.\n");
return;
}
/* get full paths of files */
local_fullpath(local_path, local);
if (strpbrk(local_path, "*?")) {
/* wild card character present */
char *p = local_path + strlen(local_path);
while (p > local_path &&
*(p - 1) != '/' &&
*(p - 1) != '\\') {
p--;
}
if (p > local_path) {
*(p - 1) = '\0';
}
strcpy(pattern, p);
}
else if (remote == NULL || *remote == '\0') {
/* if wild card is not present and remote is not specified,
use local name (last part only) */
remote = local_path + strlen(local_path);
while (remote > local_path &&
*(remote - 1) != '/' &&
*(remote - 1) != '\\') {
remote--;
}
}
remote_fullpath(remote_path, remote);
safe_fullpath(remote_path, 1);
if (vmshf_debug) {
fprintf(stderr, "local file : %s\n", local_path);
fprintf(stderr, "remote file: %s\n", remote_path);
if (pattern[0]) {
fprintf(stderr, "pattern : %s\n", pattern);
}
}
/* get local file info */
if (stat(local_path, &st) != 0) {
printf("local (guest): %s: stat() %s\n",
local_path, strerror(errno));
return;
}
U64INIT(total, 0, 0);
if (st.st_mode & S_IFDIR) {
uint32_t files = 0;
if (!pattern[0]) {
for (;;) {
int c;
printf("local (guest): %s: Is a directory.\n"
"Put all files and subdirectories ? ", local_path);
fflush(stdout);
fflush(stdin);
c = getchar();
fflush(stdin);
if (c == 'n' || c == 'N') {
return;
}
else if (c == 'y' || c == 'Y') {
break;
}
}
}
before = time(NULL);
capture_signal();
complete = vmftp_putdir(
shf, local_path, remote_path, &files, &total, pattern[0] ? pattern : NULL);
ignore_signal();
after = time(NULL);
if (complete && pattern[0] && files == 0) {
printf("No matching file.\n");
complete = 0;
}
}
else {
printf("%s ==> %s\n", local, remote);
before = time(NULL);
capture_signal();
complete = vmftp_putfile(
shf, local_path, remote_path, &total, st.st_mtime);
ignore_signal();
after = time(NULL);
}
if (complete) {
printf("Transfered %s bytes in %lu seconds\n",
format_filesize(total), after - before);
}
}
/*
send a file to the host
*/
static int vmftp_putfile(
const shf_t *shf,
const char *local,
const char *remote,
uint64_t *total,
time_t modtime)
{
FILE *fp;
uint32_t status;
uint32_t handle;
uint64_t ofs;
uint32_t len;
int ret;
int complete;
int hash_mark;
fp = fopen(local, FOPEN_READ_MODE);