mars_nwe/mars-dosutils
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c53abba21240802b455bcc5fb6b6a5d83ceb631a
mars-dosutils/login.c
Mario Fetka c53abba212 Login new
2026-05-22 17:13:42 +02:00

778 lines
18 KiB
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/* login.c 21-May-96 */
/****************************************************************
* (C)opyright (C) 1993,1996 Martin Stover, Marburg, Germany *
****************************************************************/
#include "net.h"
#include "nwcrypt.h"
#ifndef BLACK
#define BLACK 0
#endif
#ifndef BLUE
#define BLUE 1
#endif
#ifndef LIGHTGRAY
#define LIGHTGRAY 7
#endif
#ifndef WHITE
#define WHITE 15
#endif
static uint8 script_login_name[64];
static uint8 script_file_server[52];
static int login_help(void)
{
fprintf(stdout, "\n");
fprintf(stdout, " LOGIN General Help Mars NWE\n");
fprintf(stdout, " ------------------------------------------------------------------------\n");
fprintf(stdout, " Purpose: To gain access to the network.\n");
fprintf(stdout, " Syntax: LOGIN [/VER] [[Server | Tree/][Username] [/options]\n");
fprintf(stdout, "\n");
fprintf(stdout, " To: Use:\n");
fprintf(stdout, " Login without running login scripts /NS\n");
fprintf(stdout, " Clear the screen before executing /CLS\n");
fprintf(stdout, " Specify a script file /S filename\n");
fprintf(stdout, " Display version information /VER\n");
fprintf(stdout, "\n");
fprintf(stdout, " Examples:\n");
fprintf(stdout, " LOGIN SUPERVISOR\n");
fprintf(stdout, " LOGIN MARS/SUPERVISOR\n");
fprintf(stdout, "\n");
return(0);
}
static void login_banner(void)
{
int i;
textbackground(BLUE);
textcolor(WHITE);
clrscr();
gotoxy(1, 1);
for (i = 0; i < 80; i++) putch(' ');
gotoxy(36, 1);
cputs("Mars NWE");
textbackground(BLACK);
textcolor(LIGHTGRAY);
gotoxy(1, 3);
}
static char *skip_spaces(char *p)
{
while (*p == 32 || *p == '\t') p++;
return(p);
}
static void strip_quotes(char *s)
{
char *d = s;
char quote = 0;
while (*s) {
if (!quote && (*s == '"' || *s == '\'')) {
quote = *s++;
continue;
}
if (quote && *s == quote) {
quote = 0;
s++;
continue;
}
*d++ = *s++;
}
*d = '\0';
}
static void script_put_expanded(char *s)
{
while (s && *s) {
if (!strncmp(s, "%LOGIN_NAME", 11) || !strncmp(s, "%login_name", 11)) {
fprintf(stdout, "%s", script_login_name);
s += 11;
} else if (!strncmp(s, "%FILE_SERVER", 12) || !strncmp(s, "%file_server", 12)) {
fprintf(stdout, "%s", script_file_server);
s += 12;
} else if (!strncmp(s, "%P_STATION", 10) || !strncmp(s, "%p_station", 10)) {
fprintf(stdout, "000000000000");
s += 10;
} else {
fputc(*s++, stdout);
}
}
}
static void script_write(char *p)
{
p = skip_spaces(p);
strip_quotes(p);
script_put_expanded(p);
fputc('\n', stdout);
}
static void script_join_args(char **argv, int argc)
{
if (argc > 2) {
char *p = argv[argc-1];
while (p-- > argv[1]) {
if (*p == '\0') *p = 32;
}
}
}
static void script_call_line(char *line)
{
char *buf;
char **argv;
int argc = 0;
char **pp;
buf = xmalloc(512);
argv = build_argv(buf, 512, line);
if (argv != NULL) {
pp = argv;
while (*pp) {
argc++;
pp++;
}
if (argc > 0) {
upstr(argv[0]);
call_func_entry(argc, argv);
}
}
xfree(buf);
}
static int script_eval_if(char *line)
{
char tmp[512];
char *p;
char *q;
int neg = 0;
strmaxcpy(tmp, line, sizeof(tmp) - 1);
upstr(tmp);
if (strstr(tmp, "MEMBER OF") != NULL) {
if (strstr(tmp, "EVERYONE") != NULL) return(1);
return(0);
}
p = strstr(tmp, "LOGIN_NAME");
if (p != NULL) {
q = strstr(p, "<>");
if (q != NULL) neg = 1;
else q = strchr(p, '=');
if (q != NULL) {
char want[64];
char *v;
int i = 0;
q += neg ? 2 : 1;
q = skip_spaces(q);
if (*q == '"' || *q == '\'') q++;
while (*q && *q != '"' && *q != '\'' && *q != 32 && *q != '\t' && i < 63) {
want[i++] = *q++;
}
want[i] = '\0';
strmaxcpy(tmp, script_login_name, sizeof(tmp) - 1);
upstr(tmp);
if (neg) return(strcmp(tmp, want) != 0);
else return(strcmp(tmp, want) == 0);
}
}
return(0);
}
static int script_execute_line(char *line)
{
char work[512];
char cmd[32];
char *p;
char *arg;
int i;
strmaxcpy(work, line, sizeof(work) - 1);
p = skip_spaces(work);
if (!*p) return(0);
i = 0;
while (p[i] && p[i] != 32 && p[i] != '\t' && i < 31) {
cmd[i] = p[i];
i++;
}
cmd[i] = '\0';
upstr(cmd);
arg = skip_spaces(p + i);
if (!strcmp(cmd, "WRITE") || !strcmp(cmd, "ECHO")) {
script_write(arg);
return(0);
}
if (!strcmp(cmd, "PAUSE")) {
fprintf(stdout, "Strike any key when ready . . .");
fflush(stdout);
getch();
fprintf(stdout, "\n");
return(0);
}
if (!strcmp(cmd, "CLS")) {
clrscr();
return(0);
}
if (!strcmp(cmd, "BREAK")) {
return(0);
}
if (!strcmp(cmd, "SET")) {
if (*arg) putglobenv(arg);
return(0);
}
if (!strcmp(cmd, "DRIVE")) {
arg = skip_spaces(arg);
if ((*arg >= 'A' && *arg <= 'Z') || (*arg >= 'a' && *arg <= 'z')) {
if (*arg >= 'a') setdisk(*arg - 'a');
else setdisk(*arg - 'A');
}
return(0);
}
if (!strcmp(cmd, "MAP")) {
char up[512];
strmaxcpy(up, arg, sizeof(up) - 1);
upstr(up);
if (!strncmp(up, "DISPLAY", 7)) {
return(0);
}
if (!strncmp(up, "INS ", 4) || !strncmp(up, "INSERT ", 7)) {
char callbuf[512];
char *a = arg;
if (!strnicmp(up, "INS ", 4)) a += 4;
else a += 7;
sprintf(callbuf, "PATHINS %s", skip_spaces(a));
script_call_line(callbuf);
return(0);
}
if (!strncmp(up, "DEL ", 4) || !strncmp(up, "DELETE ", 7)) {
char callbuf[512];
char *a = arg;
if (!strnicmp(up, "DEL ", 4)) a += 4;
else a += 7;
sprintf(callbuf, "PATHDEL %s", skip_spaces(a));
script_call_line(callbuf);
return(0);
}
}
if (!strcmp(cmd, "EXIT")) {
return(1);
}
script_call_line(p);
return(0);
}
static int run_login_script(void)
{
char profile[200];
sprintf(profile, "%snet$log.dat", prgpath);
if (read_command_file(profile) != -2) return(0);
sprintf(profile, "%slogin", prgpath);
if (read_command_file(profile) != -2) return(0);
if (read_command_file("net$log.dat") != -2) return(0);
if (read_command_file("login") != -2) return(0);
if (read_command_file("\\login\\login") != -2) return(0);
if (read_command_file("\\login\\net$log.dat") != -2) return(0);
return(-2);
}
static int do_change_object_passwd(char *name,
uint16 objtyp,
char *oldpassword,
char *newpassword)
{
uint8 key[8];
if (!ncp_17_17(key)) {
uint32 objid = ncp_17_35(name, objtyp);
if (objid) {
uint8 oldpwd[16]; /* old passwd as stored by server */
uint8 newpwd[16]; /* new passwd as stored by server */
uint8 cryptkey[8];
uint8 tmpid[4];
uint8 passwdx;
int newlen;
memcpy(cryptkey, key, 8);
U32_TO_BE32(objid, tmpid);
shuffle(tmpid, oldpassword, strlen(oldpassword), oldpwd);
shuffle(tmpid, newpassword, strlen(newpassword), newpwd);
nw_encrypt(cryptkey, oldpwd, cryptkey);
/*
* Same keyed change password transformation as ncpfs
* ncp_change_login_passwd(): encrypt both 8-byte halves of the
* stored new password using the stored old password as key material.
* newpassencrypt() intentionally mutates oldpwd; the passwd length
* byte must be calculated afterwards, just like ncpfs does it.
*/
newpassencrypt(oldpwd, newpwd);
newpassencrypt(oldpwd + 8, newpwd + 8);
newlen = strlen(newpassword);
if (newlen > 63) newlen = 63;
passwdx = (uint8)(((newlen ^ oldpwd[0] ^ oldpwd[1]) & 0x7f) | 0x40);
if (!ncp_17_4b(cryptkey, name, objtyp, passwdx, newpwd)) {
;;
return(0);
}
}
}
/*
* Fallback for old servers/requesters where Get Encryption Key is not
* available. Keep the original unencrypted behavior as fallback only.
*/
if (!ncp_17_40(name, objtyp, oldpassword, newpassword)) {
;;
return(0);
}
return(-1);
}
static int do_object_login(char *name, uint16 objtyp, char *password, int option)
{
uint8 key[8];
if (!(option & 1) && !ncp_17_17(key)) {
uint32 objid = ncp_17_35(name, objtyp);
if (objid) {
uint8 buff[128];
uint8 encrypted[8];
uint8 tmpid[4];
U32_TO_BE32(objid, tmpid);
shuffle(tmpid, password, strlen(password), buff);
nw_encrypt(key, buff, encrypted);
if (!ncp_17_18(encrypted, name, objtyp)) {
;;
return(0);
}
}
} else { /* now we use old unencrypted algorithmus */
if (!ncp_17_14(name, objtyp, password)) {
return(0);
}
}
return(-1);
}
static void beep(void)
{
fprintf(stdout, "\007");
}
static int get_raw_str(uint8 *s, int maxlen, int doecho)
/* returns len of readed str */
{
int len = 0;
while (len < maxlen){
int key = getch();
if (key == '\r' || key == '\n') break;
switch (key) {
case 8 : if (len) {
--len;
--s;
if (doecho) {
fprintf(stdout, "\010 \010");
fflush(stdout);
}
} else beep();
continue;
case '\t': beep();
continue;
default : *s++=(uint8)key;
len++;
break;
} /* switch */
if (doecho) {
fprintf(stdout, "%c", (uint8)key);
fflush(stdout);
}
}
*s='\0';
return(len);
}
static void getstr(char *what, char *str, int rsize, int doecho)
{
fprintf(stdout, "%s: ", what);
fflush(stdout);
get_raw_str(str, rsize, doecho);
fprintf(stdout, "\n");
}
static int login_usage(void)
{
return(login_help());
}
int func_login(int argc, char *argv[], int mode)
{
int result=-1;
int option=0;
uint8 uname[200];
uint8 upasswd[200];
SEARCH_VECTOR save_drives;
int interactive_login = 0;
int no_script = 0;
if (argc > 1) {
if (!strcmp(argv[1], "/?") || !strcmp(argv[1], "-?") || !strcmp(argv[1], "?"))
return(login_help());
if (!strcmp(argv[1], "/VER") || !strcmp(argv[1], "-VER")) {
fprintf(stdout, "Mars NWE LOGIN 0.99\n");
return(0);
}
}
if (argc > 1) {
if (argv[1][0] == '-' || argv[1][0] == '/') {
if (argv[1][1] == 'u' || argv[1][1] == 'U') option |= 1;
else if (!strcmp(argv[1], "/NS") || !strcmp(argv[1], "-NS")) no_script = 1;
else if (!strcmp(argv[1], "/CLS") || !strcmp(argv[1], "-CLS")) clrscr();
else return(login_usage());
argc--;
argv++;
}
}
get_search_drive_vektor(save_drives);
remove_nwpathes();
if (argc > 1) strmaxcpy(uname, argv[1], sizeof(uname) -1);
else uname[0]='\0';
if (argc > 2) strmaxcpy(upasswd, argv[2], sizeof(upasswd) -1);
else upasswd[0]='\0';
if (!uname[0]) {
interactive_login = 1;
login_banner();
}
while (result) {
if (!uname[0]) getstr("Enter your login name", uname, sizeof(uname)-1, 1);
if (uname[0]) {
upstr(uname);
upstr(upasswd);
if ((result = do_object_login(uname, 0x1, upasswd, option)) < 0 && !*upasswd) {
getstr("Enter your password", upasswd, sizeof(upasswd)-1, 0);
upstr(upasswd);
result = do_object_login(uname, 0x1, upasswd, option);
}
if (result < 0) {
fprintf(stdout, "Login incorrect\n\n");
uname[0] = '\0';
upasswd[0] = '\0';
}
} else break;
}
if (result > -1) {
strmaxcpy(script_login_name, uname, sizeof(script_login_name) - 1);
if (get_fs_name(1, script_file_server))
strcpy(script_file_server, "MARS");
if (interactive_login)
fprintf(stdout, "You are attached to server %s.\n", script_file_server);
remove_nwpathes();
if (!no_script)
run_login_script();
} else {
(void)set_search_drive_vektor(save_drives);
}
return(result);
}
int func_logout(int argc, char *argv[], int mode)
{
remove_nwpathes();
if (logout()) {
fprintf(stderr, "logout=%d\n", neterrno);
return(1);
}
return(0);
}
int func_passwd(int argc, char *argv[], int mode)
{
int result=0;
uint8 uname[100];
uint8 upasswd[130];
uint32 my_obj_id;
if (ncp_14_46(&my_obj_id) < 0 || my_obj_id == MAX_U32 || !my_obj_id) {
fprintf(stderr, "Cannot get actual user id\n");
result = -1;
}
if (!result && argc > 1) {
uint32 obj_id;
strmaxcpy(uname, argv[1], sizeof(uname) -1);
upstr(uname);
obj_id = ncp_17_35(uname, 1);
if (!obj_id) {
fprintf(stderr, "Unkwown user: %s\n", uname);
return(-1);
}
} else if (!result) {
uint16 obj_typ;
if (ncp_17_36(my_obj_id, uname, &obj_typ) || obj_typ != 1) {
fprintf(stderr, "Cannot get actual username\n");
result=-1;
}
}
if (!result && *uname) {
uint8 newpasswd[130];
uint8 newpasswd2[130];
if (my_obj_id == 1L) *upasswd='\0';
else {
getstr("Old password", upasswd, sizeof(upasswd)-1, 0);
upstr(upasswd);
}
getstr("New password", newpasswd, sizeof(newpasswd)-1, 0);
getstr("New password again", newpasswd2, sizeof(newpasswd2)-1, 0);
if (!strcmp(newpasswd, newpasswd2)) {
upstr(uname);
upstr(newpasswd);
if (do_change_object_passwd(uname, 1, upasswd, newpasswd) < 0)
result = -1;
} else {
result = -1;
fprintf(stderr, "Password misspelled\n");
}
}
if (result < 0) fprintf(stderr, "Password not changed");
return(result);
}
static int get_line(FILE *f, char *buff, int bufsize, uint8 *str, int strsize)
/* returns command line or -1 if ends */
{
if ((FILE*) NULL != f) {
while (fgets(buff, bufsize, f) != NULL){
char *p = buff;
char *beg = NULL;
char c;
int len=0;
while (0 != (c = *p++) && c != '\n' && c != '\r' && c != '#') {
if (!beg){
if (c != '\t' && c != 32) {
beg = p - 1;
len = 1;
}
} else ++len;
}
if (len) {
strmaxcpy((uint8*)str, (uint8*)beg, min(len, strsize-1));
return(0);
}
}
}
return(-1);
}
static char **build_argv(char *buf, int bufsize, char *command)
/* routine returns **argv for use with execv routines */
/* buf will contain the path component */
{
int len = strlen(command);
int offset = ((len+4) / 4) * 4; /* aligned offset for **argv */
int components = (bufsize - offset) / 4;
if (components > 1) { /* minimal argv[0] + NULL */
char **argv = (char **)(buf+offset);
char **pp = argv;
char *p = buf;
char c;
int i=0;
--components;
memcpy(buf, command, len);
memset(buf+len, 0, bufsize - len);
*pp = p;
while ((0 != (c = *p++)) && i < components) {
if (c == 32 || c == '\t') {
*(p-1) = '\0';
if (*p != 32 && *p != '\t') {
*(++pp)=p;
i++;
}
} else if (!i && c == '/') { /* here i must get argv[0] */
*pp=p;
}
}
return(argv);
}
return(NULL);
}
int read_command_file(char *fstr)
{
FILE *f=fopen(fstr, "r");
int result=-1;
if (f != NULL) {
char *linebuf = xmalloc(512);
char *buf = xmalloc(512);
int stack[16];
int level = 0;
int active = 1;
while (get_line(f, buf, 512, linebuf, 512) > -1) {
char tmp[512];
char *p;
strmaxcpy(tmp, linebuf, sizeof(tmp) - 1);
p = skip_spaces(tmp);
upstr(p);
if (!strncmp(p, "IF ", 3)) {
if (level < 16) {
stack[level++] = active;
active = active && script_eval_if(linebuf);
}
result = 0;
continue;
}
if (!strcmp(p, "END") || !strncmp(p, "END ", 4)) {
if (level > 0) active = stack[--level];
result = 0;
continue;
}
if (!active) {
result = 0;
continue;
}
if (script_execute_line(linebuf))
break;
result = 0;
}
fclose(f);
xfree(linebuf);
xfree(buf);
} else result=-2;
return(result);
}
int func_profile(int argc, char *argv[], int mode)
{
if (argc < 2) {
fprintf(stderr, "usage:\t%s fn\n", funcname);
return(-1);
}
if (read_command_file(argv[1]) == -2) {
fprintf(stderr, "command file %s not found\n", argv[1]);
}
return(0);
}
int func_cwd(int argc, char *argv[], int mode)
{
char pathname[65];
int len;
if (argc < 2) {
fprintf(stderr, "usage:\t%s path\n", funcname);
return(-1);
}
strmaxcpy(pathname, argv[1], sizeof(pathname) -1);
korrpath(pathname);
if (0 != (len = strlen(pathname))) {
char *p=pathname+len-1;
if (*p == '/' || *p == ':') {
*(++p) = '.';
*(++p) = '\0';
len++;
}
if (!chdir(pathname)) {
if (len > 2 && *(pathname+1) == ':') /* device changed */
setdisk(*pathname - 'a' );
} else {
fprintf(stderr, "cannot chdir to %s\n", pathname);
return(1);
}
return(0);
} else return(-1);
}
int func_echo(int argc, char *argv[], int mode)
{
if (argc > 1)
fprintf(stdout, "%s\n", argv[1]);
return(0);
}
int func_exec(int argc, char *argv[], int mode)
{
if (argc > 1) {
char *buf = xmalloc(512);
char *buff = xmalloc(512);
char *p = buff;
int k = 0;
char **nargv;
while (++k < argc) {
strcpy(p, argv[k]);
p += strlen(argv[k]);
*p++ = 32;
*p = '\0';
}
nargv=build_argv(buf, 512, buff);
xfree(buff);
if (nargv != NULL) {
if (!mode)
spawnvp(P_WAIT, buf, (const char *const *)nargv);
else
execvp(buf, (const char *const *)nargv);
}
xfree(buf);
}
return(0);
}
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