trunk/rdesktop/rdesktop.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Entrypoint and utility functions
   Copyright (C) Matthew Chapman 1999-2003

   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.
*/

#include <stdarg.h>             /* va_list va_start va_end */
#include <unistd.h>             /* read close getuid getgid getpid getppid gethostname */
#include <fcntl.h>              /* open */
#include <pwd.h>                /* getpwuid */
#include <termios.h>            /* tcgetattr tcsetattr */
#include <sys/stat.h>           /* stat */
#include <sys/time.h>           /* gettimeofday */
#include <sys/times.h>          /* times */
#include <errno.h>
#include "rdesktop.h"

#ifdef EGD_SOCKET
#include <sys/socket.h>         /* socket connect */
#include <sys/un.h>             /* sockaddr_un */
#endif

#ifdef WITH_OPENSSL
#include <openssl/md5.h>
#else
#include "crypto/md5.h"
#endif

char g_title[64] = "";
char g_username[64];
char hostname[16];
char keymapname[16];
int keylayout = 0x409;          /* Defaults to US keyboard layout */

int g_width = 800;              /* width is special: If 0, the
                                   geometry will be fetched from
                                   _NET_WORKAREA. If negative,
                                   absolute value specifies the
                                   percent of the whole screen. */
int g_height = 600;
int tcp_port_rdp = TCP_PORT_RDP;
int g_server_bpp = 8;
int g_win_button_size = 0;      /* If zero, disable single app mode */
BOOL g_bitmap_compression = True;
BOOL g_sendmotion = True;
BOOL g_orders = True;
BOOL g_encryption = True;
BOOL packet_encryption = True;
BOOL g_desktop_save = True;
BOOL g_fullscreen = False;
BOOL g_grab_keyboard = True;
BOOL g_hide_decorations = False;
BOOL g_use_rdp5 = True;
BOOL g_console_session = False;
extern BOOL g_owncolmap;

#ifdef RDP2VNC
extern int rfb_port;
extern int defer_time;
void
rdp2vnc_connect(char *server, uint32 flags, char *domain, char *password,
                char *shell, char *directory);
#endif
/* Display usage information */
static void
usage(char *program)
{
        fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
        fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n");
        fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");

        fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
#ifdef RDP2VNC
        fprintf(stderr, "   -V: vnc port\n");
        fprintf(stderr, "   -Q: defer time (ms)\n");
#endif
        fprintf(stderr, "   -u: user name\n");
        fprintf(stderr, "   -d: domain\n");
        fprintf(stderr, "   -s: shell\n");
        fprintf(stderr, "   -S: caption button size (single application mode)\n");
        fprintf(stderr, "   -c: working directory\n");
        fprintf(stderr, "   -p: password (- to prompt)\n");
        fprintf(stderr, "   -n: client hostname\n");
        fprintf(stderr, "   -k: keyboard layout on terminal server (us,sv,gr,etc.)\n");
        fprintf(stderr, "   -g: desktop geometry (WxH)\n");
        fprintf(stderr, "   -f: full-screen mode\n");
        fprintf(stderr, "   -b: force bitmap updates\n");
        fprintf(stderr, "   -e: disable encryption (French TS)\n");
        fprintf(stderr, "   -E: disable encryption from client to server\n");
        fprintf(stderr, "   -m: do not send motion events\n");
        fprintf(stderr, "   -C: use private colour map\n");
        fprintf(stderr, "   -K: keep window manager key bindings\n");
        fprintf(stderr, "   -T: window title\n");
        fprintf(stderr, "   -D: hide window manager decorations\n");
        fprintf(stderr, "   -a: server bpp\n");
        fprintf(stderr, "   -0: attach to console\n");
        fprintf(stderr, "   -4: use RDP version 4\n");
        fprintf(stderr, "   -5: use RDP version 5 (default)\n");
}

static BOOL
read_password(char *password, int size)
{
        struct termios tios;
        BOOL ret = False;
        int istty = 0;
        char *p;

        if (tcgetattr(STDIN_FILENO, &tios) == 0)
        {
                fprintf(stderr, "Password: ");
                tios.c_lflag &= ~ECHO;
                tcsetattr(STDIN_FILENO, TCSANOW, &tios);
                istty = 1;
        }

        if (fgets(password, size, stdin) != NULL)
        {
                ret = True;

                /* strip final newline */
                p = strchr(password, '\n');
                if (p != NULL)
                        *p = 0;
        }

        if (istty)
        {
                tios.c_lflag |= ECHO;
                tcsetattr(STDIN_FILENO, TCSANOW, &tios);
                fprintf(stderr, "\n");
        }

        return ret;
}

static void
parse_server_and_port(char *server)
{
        char *p;
#ifdef IPv6
        int addr_colons;
#endif

#ifdef IPv6
        p = server;
        addr_colons = 0;
        while (*p)
                if (*p++ == ':')
                        addr_colons++;
        if (addr_colons >= 2)
        {
                /* numeric IPv6 style address format - [1:2:3::4]:port */
                p = strchr(server, ']');
                if (*server == '[' && p != NULL)
                {
                        if (*(p + 1) == ':' && *(p + 2) != '\0')
                                tcp_port_rdp = strtol(p + 2, NULL, 10);
                        /* remove the port number and brackets from the address */
                        *p = '\0';
                        strncpy(server, server + 1, strlen(server));
                }
        }
        else
        {
                /* dns name or IPv4 style address format - server.example.com:port or 1.2.3.4:port */
                p = strchr(server, ':');
                if (p != NULL)
                {
                        tcp_port_rdp = strtol(p + 1, NULL, 10);
                        *p = 0;
                }
        }
#else /* no IPv6 support */
        p = strchr(server, ':');
        if (p != NULL)
        {
                tcp_port_rdp = strtol(p + 1, NULL, 10);
                *p = 0;
        }
#endif /* IPv6 */

}

/* Client program */
int
main(int argc, char *argv[])
{
        char server[64];
        char fullhostname[64];
        char domain[16];
        char password[64];
        char shell[128];
        char directory[32];
        BOOL prompt_password, rdp_retval = False;
        struct passwd *pw;
        uint32 flags;
        char *p;
        int c;
        int username_option = 0;

        flags = RDP_LOGON_NORMAL;
        prompt_password = False;
        domain[0] = password[0] = shell[0] = directory[0] = 0;
        strcpy(keymapname, "en-us");

#ifdef RDP2VNC
#define VNCOPT "V:Q:"
#else
#define VNCOPT
#endif

        while ((c = getopt(argc, argv, VNCOPT "u:d:s:S:c:p:n:k:g:a:fbeEmCKT:D045h?")) != -1)
        {
                switch (c)
                {
#ifdef RDP2VNC
                        case 'V':
                                rfb_port = strtol(optarg, NULL, 10);
                                if (rfb_port < 100)
                                        rfb_port += 5900;
                                break;

                        case 'Q':
                                defer_time = strtol(optarg, NULL, 10);
                                if (defer_time < 0)
                                        defer_time = 0;
                                break;
#endif

                        case 'u':
                                STRNCPY(g_username, optarg, sizeof(g_username));
                                username_option = 1;
                                break;

                        case 'd':
                                STRNCPY(domain, optarg, sizeof(domain));
                                break;

                        case 's':
                                STRNCPY(shell, optarg, sizeof(shell));
                                break;

                        case 'S':
                                if (!strcmp(optarg, "standard"))
                                {
                                        g_win_button_size = 18;
                                        break;
                                }

                                g_win_button_size = strtol(optarg, &p, 10);

                                if (*p)
                                {
                                        error("invalid button size\n");
                                        return 1;
                                }

                                break;

                        case 'c':
                                STRNCPY(directory, optarg, sizeof(directory));
                                break;

                        case 'p':
                                if ((optarg[0] == '-') && (optarg[1] == 0))
                                {
                                        prompt_password = True;
                                        break;
                                }

                                STRNCPY(password, optarg, sizeof(password));
                                flags |= RDP_LOGON_AUTO;

                                /* try to overwrite argument so it won't appear in ps */
                                p = optarg;
                                while (*p)
                                        *(p++) = 'X';
                                break;

                        case 'n':
                                STRNCPY(hostname, optarg, sizeof(hostname));
                                break;

                        case 'k':
                                STRNCPY(keymapname, optarg, sizeof(keymapname));
                                break;

                        case 'g':
                                if (!strcmp(optarg, "workarea"))
                                {
                                        g_width = g_height = 0;
                                        break;
                                }

                                g_width = strtol(optarg, &p, 10);
                                if (g_width <= 0)
                                {
                                        error("invalid geometry\n");
                                        return 1;
                                }

                                if (*p == 'x')
                                        g_height = strtol(p + 1, NULL, 10);

                                if (g_height <= 0)
                                {
                                        error("invalid geometry\n");
                                        return 1;
                                }

                                if (*p == '%')
                                        g_width = -g_width;

                                break;

                        case 'f':
                                g_fullscreen = True;
                                break;

                        case 'b':
                                g_orders = False;
                                break;

                        case 'e':
                                g_encryption = False;
                                break;
                        case 'E':
                                packet_encryption = False;
                                break;
                        case 'm':
                                g_sendmotion = False;
                                break;

                        case 'C':
                                g_owncolmap = True;
                                break;

                        case 'K':
                                g_grab_keyboard = False;
                                break;

                        case 'T':
                                STRNCPY(g_title, optarg, sizeof(g_title));
                                break;

                        case 'D':
                                g_hide_decorations = True;
                                break;

                        case 'a':
                                g_server_bpp = strtol(optarg, NULL, 10);
                                if (g_server_bpp != 8 && g_server_bpp != 16 && g_server_bpp != 15
                                    && g_server_bpp != 24)
                                {
                                        error("invalid server bpp\n");
                                        return 1;
                                }
                                break;

                        case '0':
                                g_console_session = True;
                                break;

                        case '4':
                                g_use_rdp5 = False;
                                break;

                        case '5':
                                g_use_rdp5 = True;
                                break;

                        case 'h':
                        case '?':
                        default:
                                usage(argv[0]);
                                return 1;
                }
        }

        if (argc - optind < 1)
        {
                usage(argv[0]);
                return 1;
        }

        STRNCPY(server, argv[optind], sizeof(server));
        parse_server_and_port(server);

        if (!username_option)
        {
                pw = getpwuid(getuid());
                if ((pw == NULL) || (pw->pw_name == NULL))
                {
                        error("could not determine username, use -u\n");
                        return 1;
                }

                STRNCPY(g_username, pw->pw_name, sizeof(g_username));
        }

        if (hostname[0] == 0)
        {
                if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
                {
                        error("could not determine local hostname, use -n\n");
                        return 1;
                }

                p = strchr(fullhostname, '.');
                if (p != NULL)
                        *p = 0;

                STRNCPY(hostname, fullhostname, sizeof(hostname));
        }

        if (prompt_password && read_password(password, sizeof(password)))
                flags |= RDP_LOGON_AUTO;

        if (g_title[0] == 0)
        {
                strcpy(g_title, "rdesktop - ");
                strncat(g_title, server, sizeof(g_title) - sizeof("rdesktop - "));
        }

#ifdef RDP2VNC
        rdp2vnc_connect(server, flags, domain, password, shell, directory);
        return 0;
#else

        if (!ui_init())
                return 1;

#ifdef WITH_RDPSND
        rdpsnd_init();
#endif
        /* rdpdr_init(); */

        if (!rdp_connect(server, flags, domain, password, shell, directory))
                return 1;

        /* By setting encryption to False here, we have an encrypted login 
           packet but unencrypted transfer of other packets */
        if (!packet_encryption)
                g_encryption = False;


        DEBUG(("Connection successful.\n"));
        memset(password, 0, sizeof(password));

        if (ui_create_window())
        {
                rdp_retval = rdp_main_loop();
                ui_destroy_window();
        }

        DEBUG(("Disconnecting...\n"));
        rdp_disconnect();
        ui_deinit();

        if (True == rdp_retval)
                return 0;
        else
                return 2;

#endif

}

#ifdef EGD_SOCKET
/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
static BOOL
generate_random_egd(uint8 * buf)
{
        struct sockaddr_un addr;
        BOOL ret = False;
        int fd;

        fd = socket(AF_UNIX, SOCK_STREAM, 0);
        if (fd == -1)
                return False;

        addr.sun_family = AF_UNIX;
        memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
        if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
                goto err;

        /* PRNGD and EGD use a simple communications protocol */
        buf[0] = 1;             /* Non-blocking (similar to /dev/urandom) */
        buf[1] = 32;            /* Number of requested random bytes */
        if (write(fd, buf, 2) != 2)
                goto err;

        if ((read(fd, buf, 1) != 1) || (buf[0] == 0))   /* Available? */
                goto err;

        if (read(fd, buf, 32) != 32)
                goto err;

        ret = True;

      err:
        close(fd);
        return ret;
}
#endif

/* Generate a 32-byte random for the secure transport code. */
void
generate_random(uint8 * random)
{
        struct stat st;
        struct tms tmsbuf;
        MD5_CTX md5;
        uint32 *r;
        int fd, n;

        /* If we have a kernel random device, try that first */
        if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
            || ((fd = open("/dev/random", O_RDONLY)) != -1))
        {
                n = read(fd, random, 32);
                close(fd);
                if (n == 32)
                        return;
        }

#ifdef EGD_SOCKET
        /* As a second preference use an EGD */
        if (generate_random_egd(random))
                return;
#endif

        /* Otherwise use whatever entropy we can gather - ideas welcome. */
        r = (uint32 *) random;
        r[0] = (getpid()) | (getppid() << 16);
        r[1] = (getuid()) | (getgid() << 16);
        r[2] = times(&tmsbuf);  /* system uptime (clocks) */
        gettimeofday((struct timeval *) &r[3], NULL);   /* sec and usec */
        stat("/tmp", &st);
        r[5] = st.st_atime;
        r[6] = st.st_mtime;
        r[7] = st.st_ctime;

        /* Hash both halves with MD5 to obscure possible patterns */
        MD5_Init(&md5);
        MD5_Update(&md5, random, 16);
        MD5_Final(random, &md5);
        MD5_Update(&md5, random + 16, 16);
        MD5_Final(random + 16, &md5);
}

/* malloc; exit if out of memory */
void *
xmalloc(int size)
{
        void *mem = malloc(size);
        if (mem == NULL)
        {
                error("xmalloc %d\n", size);
                exit(1);
        }
        return mem;
}

/* realloc; exit if out of memory */
void *
xrealloc(void *oldmem, int size)
{
        void *mem = realloc(oldmem, size);
        if (mem == NULL)
        {
                error("xrealloc %d\n", size);
                exit(1);
        }
        return mem;
}

/* free */
void
xfree(void *mem)
{
        free(mem);
}

/* report an error */
void
error(char *format, ...)
{
        va_list ap;

        fprintf(stderr, "ERROR: ");

        va_start(ap, format);
        vfprintf(stderr, format, ap);
        va_end(ap);
}

/* report a warning */
void
warning(char *format, ...)
{
        va_list ap;

        fprintf(stderr, "WARNING: ");

        va_start(ap, format);
        vfprintf(stderr, format, ap);
        va_end(ap);
}

/* report an unimplemented protocol feature */
void
unimpl(char *format, ...)
{
        va_list ap;

        fprintf(stderr, "NOT IMPLEMENTED: ");

        va_start(ap, format);
        vfprintf(stderr, format, ap);
        va_end(ap);
}

/* produce a hex dump */
void
hexdump(unsigned char *p, int len)
{
        unsigned char *line = p;
        int i, thisline, offset = 0;

        while (offset < len)
        {
                printf("%04x ", offset);
                thisline = len - offset;
                if (thisline > 16)
                        thisline = 16;

                for (i = 0; i < thisline; i++)
                        printf("%02x ", line[i]);

                for (; i < 16; i++)
                        printf("   ");

                for (i = 0; i < thisline; i++)
                        printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');

                printf("\n");
                offset += thisline;
                line += thisline;
        }
}


int
load_licence(unsigned char **data)
{
        char *home, *path;
        struct stat st;
        int fd, length;

        home = getenv("HOME");
        if (home == NULL)
                return -1;

        path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence."));
        sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);

        fd = open(path, O_RDONLY);
        if (fd == -1)
                return -1;

        if (fstat(fd, &st))
                return -1;

        *data = (uint8 *) xmalloc(st.st_size);
        length = read(fd, *data, st.st_size);
        close(fd);
        xfree(path);
        return length;
}

void
save_licence(unsigned char *data, int length)
{
        char *home, *path, *tmppath;
        int fd;

        home = getenv("HOME");
        if (home == NULL)
                return;

        path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence."));

        sprintf(path, "%s/.rdesktop", home);
        if ((mkdir(path, 0700) == -1) && errno != EEXIST)
        {
                perror(path);
                return;
        }

        /* write licence to licence.hostname.new, then atomically rename to licence.hostname */

        sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
        tmppath = (char *) xmalloc(strlen(path) + sizeof(".new"));
        strcpy(tmppath, path);
        strcat(tmppath, ".new");

        fd = open(tmppath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
        if (fd == -1)
        {
                perror(tmppath);
                return;
        }

        if (write(fd, data, length) != length)
        {
                perror(tmppath);
                unlink(tmppath);
        }
        else if (rename(tmppath, path) == -1)
        {
                perror(path);
                unlink(tmppath);
        }

        close(fd);
        xfree(tmppath);
        xfree(path);
}
1	forsberg	350	/* -- c-basic-offset: 8 --
2	matty	10	rdesktop: A Remote Desktop Protocol client.
3			Entrypoint and utility functions
4	matthewc	304	Copyright (C) Matthew Chapman 1999-2003
5	jsorg71	100
6	matty	10	This program is free software; you can redistribute it and/or modify
7			it under the terms of the GNU General Public License as published by
8			the Free Software Foundation; either version 2 of the License, or
9			(at your option) any later version.
10	jsorg71	100
11	matty	10	This program is distributed in the hope that it will be useful,
12			but WITHOUT ANY WARRANTY; without even the implied warranty of
13			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			GNU General Public License for more details.
15	jsorg71	100
16	matty	10	You should have received a copy of the GNU General Public License
17			along with this program; if not, write to the Free Software
18			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19			*/
20
21	matty	30	#include <stdarg.h> /* va_list va_start va_end */
22	matty	24	#include <unistd.h> /* read close getuid getgid getpid getppid gethostname */
23			#include <fcntl.h> /* open */
24			#include <pwd.h> /* getpwuid */
25	matthewc	211	#include <termios.h> /* tcgetattr tcsetattr */
26	matty	24	#include <sys/stat.h> /* stat */
27			#include <sys/time.h> /* gettimeofday */
28			#include <sys/times.h> /* times */
29	astrand	325	#include <errno.h>
30	matty	10	#include "rdesktop.h"
31
32	matthewc	220	#ifdef EGD_SOCKET
33			#include <sys/socket.h> /* socket connect */
34			#include <sys/un.h> /* sockaddr_un */
35			#endif
36
37			#ifdef WITH_OPENSSL
38			#include <openssl/md5.h>
39			#else
40			#include "crypto/md5.h"
41			#endif
42
43	astrand	479	char g_title[64] = "";
44			char g_username[64];
45	matty	10	char hostname[16];
46	matthewc	38	char keymapname[16];
47	astrand	66	int keylayout = 0x409; /* Defaults to US keyboard layout */
48	astrand	500
49			int g_width = 800; /* width is special: If 0, the
50			geometry will be fetched from
51			_NET_WORKAREA. If negative,
52			absolute value specifies the
53			percent of the whole screen. */
54	jsorg71	447	int g_height = 600;
55	jsorg71	58	int tcp_port_rdp = TCP_PORT_RDP;
56	jsorg71	438	int g_server_bpp = 8;
57	jsorg71	450	int g_win_button_size = 0; /* If zero, disable single app mode */
58	jsorg71	437	BOOL g_bitmap_compression = True;
59	jsorg71	447	BOOL g_sendmotion = True;
60	jsorg71	437	BOOL g_orders = True;
61			BOOL g_encryption = True;
62	forsberg	427	BOOL packet_encryption = True;
63	jsorg71	438	BOOL g_desktop_save = True;
64	jsorg71	447	BOOL g_fullscreen = False;
65	jsorg71	450	BOOL g_grab_keyboard = True;
66			BOOL g_hide_decorations = False;
67	astrand	458	BOOL g_use_rdp5 = True;
68	matthewc	482	BOOL g_console_session = False;
69	jsorg71	450	extern BOOL g_owncolmap;
70	matty	10
71	astrand	333	#ifdef RDP2VNC
72			extern int rfb_port;
73			extern int defer_time;
74			void
75			rdp2vnc_connect(char server, uint32 flags, char domain, char *password,
76			char shell, char directory);
77			#endif
78	matty	10	/* Display usage information */
79	matty	25	static void
80			usage(char *program)
81	matty	10	{
82	matthewc	122	fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
83	matthewc	304	fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n");
84	matthewc	122	fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
85
86	matthewc	222	fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
87	astrand	333	#ifdef RDP2VNC
88			fprintf(stderr, " -V: vnc port\n");
89	forsberg	471	fprintf(stderr, " -Q: defer time (ms)\n");
90	astrand	333	#endif
91	astrand	111	fprintf(stderr, " -u: user name\n");
92			fprintf(stderr, " -d: domain\n");
93			fprintf(stderr, " -s: shell\n");
94	astrand	329	fprintf(stderr, " -S: caption button size (single application mode)\n");
95	astrand	111	fprintf(stderr, " -c: working directory\n");
96	matthewc	211	fprintf(stderr, " -p: password (- to prompt)\n");
97	astrand	111	fprintf(stderr, " -n: client hostname\n");
98	matthewc	223	fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr,etc.)\n");
99	astrand	111	fprintf(stderr, " -g: desktop geometry (WxH)\n");
100			fprintf(stderr, " -f: full-screen mode\n");
101			fprintf(stderr, " -b: force bitmap updates\n");
102			fprintf(stderr, " -e: disable encryption (French TS)\n");
103	forsberg	471	fprintf(stderr, " -E: disable encryption from client to server\n");
104	astrand	111	fprintf(stderr, " -m: do not send motion events\n");
105	n-ki	279	fprintf(stderr, " -C: use private colour map\n");
106	astrand	111	fprintf(stderr, " -K: keep window manager key bindings\n");
107	matthewc	223	fprintf(stderr, " -T: window title\n");
108	astrand	262	fprintf(stderr, " -D: hide window manager decorations\n");
109	jsorg71	309	fprintf(stderr, " -a: server bpp\n");
110	matthewc	482	fprintf(stderr, " -0: attach to console\n");
111			fprintf(stderr, " -4: use RDP version 4\n");
112			fprintf(stderr, " -5: use RDP version 5 (default)\n");
113	matty	10	}
114
115	matthewc	211	static BOOL
116			read_password(char *password, int size)
117			{
118			struct termios tios;
119			BOOL ret = False;
120			int istty = 0;
121			char *p;
122
123			if (tcgetattr(STDIN_FILENO, &tios) == 0)
124			{
125			fprintf(stderr, "Password: ");
126			tios.c_lflag &= ~ECHO;
127			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
128			istty = 1;
129			}
130
131			if (fgets(password, size, stdin) != NULL)
132			{
133			ret = True;
134
135			/* strip final newline */
136			p = strchr(password, '\n');
137			if (p != NULL)
138			*p = 0;
139			}
140
141			if (istty)
142			{
143			tios.c_lflag \|= ECHO;
144			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
145			fprintf(stderr, "\n");
146			}
147
148			return ret;
149			}
150
151	astrand	444	static void
152			parse_server_and_port(char *server)
153			{
154			char *p;
155			#ifdef IPv6
156			int addr_colons;
157			#endif
158
159			#ifdef IPv6
160			p = server;
161			addr_colons = 0;
162			while (*p)
163			if (*p++ == ':')
164			addr_colons++;
165			if (addr_colons >= 2)
166			{
167			/* numeric IPv6 style address format - [1:2:3::4]:port */
168			p = strchr(server, ']');
169			if (*server == '[' && p != NULL)
170			{
171			if ((p + 1) == ':' && (p + 2) != '\0')
172			tcp_port_rdp = strtol(p + 2, NULL, 10);
173			/* remove the port number and brackets from the address */
174			*p = '\0';
175			strncpy(server, server + 1, strlen(server));
176			}
177			}
178			else
179			{
180			/* dns name or IPv4 style address format - server.example.com:port or 1.2.3.4:port */
181			p = strchr(server, ':');
182			if (p != NULL)
183			{
184			tcp_port_rdp = strtol(p + 1, NULL, 10);
185			*p = 0;
186			}
187			}
188			#else /* no IPv6 support */
189			p = strchr(server, ':');
190			if (p != NULL)
191			{
192			tcp_port_rdp = strtol(p + 1, NULL, 10);
193			*p = 0;
194			}
195			#endif /* IPv6 */
196
197			}
198
199	matty	10	/* Client program */
200	matty	25	int
201			main(int argc, char *argv[])
202	matty	10	{
203	matthewc	222	char server[64];
204	matty	30	char fullhostname[64];
205	matty	21	char domain[16];
206	astrand	479	char password[64];
207	astrand	238	char shell[128];
208	matty	21	char directory[32];
209	forsberg	424	BOOL prompt_password, rdp_retval = False;
210	matty	30	struct passwd *pw;
211			uint32 flags;
212	matthewc	222	char *p;
213	matty	10	int c;
214	astrand	289	int username_option = 0;
215	matty	10
216	matty	21	flags = RDP_LOGON_NORMAL;
217	matthewc	211	prompt_password = False;
218	matty	21	domain[0] = password[0] = shell[0] = directory[0] = 0;
219	matthewc	240	strcpy(keymapname, "en-us");
220	matty	21
221	astrand	333	#ifdef RDP2VNC
222	forsberg	471	#define VNCOPT "V:Q:"
223	astrand	333	#else
224			#define VNCOPT
225			#endif
226
227	matthewc	482	while ((c = getopt(argc, argv, VNCOPT "u:d:s:S:c:p:n:k:g:a:fbeEmCKT:D045h?")) != -1)
228	matty	10	{
229			switch (c)
230			{
231	astrand	333	#ifdef RDP2VNC
232			case 'V':
233			rfb_port = strtol(optarg, NULL, 10);
234			if (rfb_port < 100)
235			rfb_port += 5900;
236			break;
237
238	forsberg	471	case 'Q':
239	astrand	333	defer_time = strtol(optarg, NULL, 10);
240			if (defer_time < 0)
241			defer_time = 0;
242			break;
243			#endif
244
245	matty	10	case 'u':
246	jsorg71	437	STRNCPY(g_username, optarg, sizeof(g_username));
247	astrand	289	username_option = 1;
248	matty	10	break;
249
250	matty	21	case 'd':
251	matty	30	STRNCPY(domain, optarg, sizeof(domain));
252	matty	21	break;
253
254			case 's':
255	matty	30	STRNCPY(shell, optarg, sizeof(shell));
256	matty	21	break;
257
258	astrand	328	case 'S':
259			if (!strcmp(optarg, "standard"))
260			{
261	jsorg71	450	g_win_button_size = 18;
262	astrand	328	break;
263			}
264
265	jsorg71	450	g_win_button_size = strtol(optarg, &p, 10);
266	astrand	328
267			if (*p)
268			{
269			error("invalid button size\n");
270			return 1;
271			}
272
273			break;
274
275	matty	21	case 'c':
276	matty	30	STRNCPY(directory, optarg, sizeof(directory));
277	matty	21	break;
278
279	matty	30	case 'p':
280	matthewc	211	if ((optarg[0] == '-') && (optarg[1] == 0))
281			{
282			prompt_password = True;
283			break;
284			}
285
286	matty	30	STRNCPY(password, optarg, sizeof(password));
287			flags \|= RDP_LOGON_AUTO;
288	matthewc	211
289			/* try to overwrite argument so it won't appear in ps */
290	n-ki	171	p = optarg;
291			while (*p)
292			*(p++) = 'X';
293	matty	30	break;
294
295	matty	10	case 'n':
296	matty	30	STRNCPY(hostname, optarg, sizeof(hostname));
297	matty	10	break;
298
299			case 'k':
300	astrand	82	STRNCPY(keymapname, optarg, sizeof(keymapname));
301	matty	10	break;
302
303	matty	30	case 'g':
304	astrand	263	if (!strcmp(optarg, "workarea"))
305			{
306	jsorg71	447	g_width = g_height = 0;
307	astrand	263	break;
308			}
309
310	jsorg71	447	g_width = strtol(optarg, &p, 10);
311	astrand	500	if (g_width <= 0)
312			{
313			error("invalid geometry\n");
314			return 1;
315			}
316
317	matty	30	if (*p == 'x')
318	jsorg71	447	g_height = strtol(p + 1, NULL, 10);
319	matty	30
320	astrand	500	if (g_height <= 0)
321	matty	30	{
322			error("invalid geometry\n");
323			return 1;
324			}
325	astrand	500
326			if (*p == '%')
327			g_width = -g_width;
328
329	matty	10	break;
330
331	matty	30	case 'f':
332	jsorg71	447	g_fullscreen = True;
333	matty	30	break;
334
335	matty	10	case 'b':
336	jsorg71	437	g_orders = False;
337	matty	10	break;
338
339	matty	30	case 'e':
340	jsorg71	437	g_encryption = False;
341	matty	10	break;
342	astrand	435	case 'E':
343	forsberg	427	packet_encryption = False;
344			break;
345	matty	30	case 'm':
346	jsorg71	447	g_sendmotion = False;
347	matty	28	break;
348	matty	29
349	n-ki	279	case 'C':
350	jsorg71	450	g_owncolmap = True;
351	n-ki	279	break;
352
353	astrand	76	case 'K':
354	jsorg71	450	g_grab_keyboard = False;
355	astrand	76	break;
356
357	matthewc	223	case 'T':
358	jsorg71	450	STRNCPY(g_title, optarg, sizeof(g_title));
359	astrand	107	break;
360
361	astrand	262	case 'D':
362	jsorg71	450	g_hide_decorations = True;
363	astrand	262	break;
364
365	jsorg71	309	case 'a':
366	jsorg71	438	g_server_bpp = strtol(optarg, NULL, 10);
367			if (g_server_bpp != 8 && g_server_bpp != 16 && g_server_bpp != 15
368			&& g_server_bpp != 24)
369	jsorg71	309	{
370			error("invalid server bpp\n");
371			return 1;
372			}
373			break;
374
375	matthewc	482	case '0':
376			g_console_session = True;
377			break;
378
379	astrand	458	case '4':
380			g_use_rdp5 = False;
381			break;
382
383	forsberg	350	case '5':
384	jsorg71	438	g_use_rdp5 = True;
385	forsberg	350	break;
386	astrand	458
387	matty	28	case 'h':
388	matty	10	case '?':
389			default:
390			usage(argv[0]);
391			return 1;
392			}
393			}
394
395			if (argc - optind < 1)
396			{
397			usage(argv[0]);
398			return 1;
399			}
400
401	matthewc	222	STRNCPY(server, argv[optind], sizeof(server));
402	astrand	444	parse_server_and_port(server);
403	matty	10
404	astrand	289	if (!username_option)
405	matty	10	{
406			pw = getpwuid(getuid());
407			if ((pw == NULL) \|\| (pw->pw_name == NULL))
408			{
409	matty	30	error("could not determine username, use -u\n");
410	matty	10	return 1;
411			}
412
413	jsorg71	437	STRNCPY(g_username, pw->pw_name, sizeof(g_username));
414	matty	10	}
415
416			if (hostname[0] == 0)
417			{
418	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
419	matty	10	{
420	matty	30	error("could not determine local hostname, use -n\n");
421	matty	10	return 1;
422			}
423	matty	30
424			p = strchr(fullhostname, '.');
425			if (p != NULL)
426			*p = 0;
427
428			STRNCPY(hostname, fullhostname, sizeof(hostname));
429	matty	10	}
430
431	matthewc	211	if (prompt_password && read_password(password, sizeof(password)))
432			flags \|= RDP_LOGON_AUTO;
433	matty	30
434	jsorg71	450	if (g_title[0] == 0)
435	astrand	107	{
436	jsorg71	450	strcpy(g_title, "rdesktop - ");
437			strncat(g_title, server, sizeof(g_title) - sizeof("rdesktop - "));
438	astrand	107	}
439	matty	12
440	astrand	333	#ifdef RDP2VNC
441			rdp2vnc_connect(server, flags, domain, password, shell, directory);
442	forsberg	424	return 0;
443	astrand	333	#else
444
445	astrand	82	if (!ui_init())
446			return 1;
447	astrand	66
448	matthewc	474	#ifdef WITH_RDPSND
449			rdpsnd_init();
450			#endif
451	matthewc	432	/* rdpdr_init(); */
452	forsberg	416
453	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
454			return 1;
455
456	forsberg	427	/* By setting encryption to False here, we have an encrypted login
457			packet but unencrypted transfer of other packets */
458	astrand	435	if (!packet_encryption)
459	jsorg71	437	g_encryption = False;
460	forsberg	427
461
462	matthewc	122	DEBUG(("Connection successful.\n"));
463	matthewc	211	memset(password, 0, sizeof(password));
464	matthewc	53
465	jsorg71	100	if (ui_create_window())
466	matty	10	{
467	forsberg	424	rdp_retval = rdp_main_loop();
468	matty	10	ui_destroy_window();
469			}
470
471	matthewc	122	DEBUG(("Disconnecting...\n"));
472	matthewc	53	rdp_disconnect();
473	matthewc	188	ui_deinit();
474	astrand	333
475	astrand	435	if (True == rdp_retval)
476	forsberg	424	return 0;
477			else
478			return 2;
479
480	astrand	333	#endif
481
482	matty	10	}
483
484	matthewc	220	#ifdef EGD_SOCKET
485			/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
486			static BOOL
487			generate_random_egd(uint8 * buf)
488			{
489			struct sockaddr_un addr;
490			BOOL ret = False;
491			int fd;
492
493			fd = socket(AF_UNIX, SOCK_STREAM, 0);
494			if (fd == -1)
495			return False;
496
497			addr.sun_family = AF_UNIX;
498			memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
499	astrand	259	if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
500	matthewc	220	goto err;
501
502			/* PRNGD and EGD use a simple communications protocol */
503	astrand	259	buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
504			buf[1] = 32; /* Number of requested random bytes */
505	matthewc	220	if (write(fd, buf, 2) != 2)
506			goto err;
507
508	astrand	259	if ((read(fd, buf, 1) != 1) \|\| (buf[0] == 0)) /* Available? */
509	matthewc	220	goto err;
510
511			if (read(fd, buf, 32) != 32)
512			goto err;
513
514			ret = True;
515
516	astrand	259	err:
517	matthewc	220	close(fd);
518			return ret;
519			}
520			#endif
521
522	matty	10	/* Generate a 32-byte random for the secure transport code. */
523	matty	25	void
524	astrand	64	generate_random(uint8 * random)
525	matty	10	{
526			struct stat st;
527	matty	22	struct tms tmsbuf;
528	matthewc	220	MD5_CTX md5;
529			uint32 *r;
530			int fd, n;
531	matty	10
532	matthewc	220	/* If we have a kernel random device, try that first */
533	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
534			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
535	matty	10	{
536	matthewc	220	n = read(fd, random, 32);
537	matty	10	close(fd);
538	matthewc	220	if (n == 32)
539			return;
540	matty	10	}
541
542	matthewc	220	#ifdef EGD_SOCKET
543			/* As a second preference use an EGD */
544			if (generate_random_egd(random))
545			return;
546			#endif
547
548	matty	10	/* Otherwise use whatever entropy we can gather - ideas welcome. */
549	astrand	259	r = (uint32 *) random;
550	matty	10	r[0] = (getpid()) \| (getppid() << 16);
551			r[1] = (getuid()) \| (getgid() << 16);
552	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
553			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
554	matty	10	stat("/tmp", &st);
555			r[5] = st.st_atime;
556			r[6] = st.st_mtime;
557			r[7] = st.st_ctime;
558	matthewc	220
559			/* Hash both halves with MD5 to obscure possible patterns */
560			MD5_Init(&md5);
561	astrand	259	MD5_Update(&md5, random, 16);
562	matthewc	220	MD5_Final(random, &md5);
563	astrand	259	MD5_Update(&md5, random + 16, 16);
564			MD5_Final(random + 16, &md5);
565	matty	10	}
566
567			/* malloc; exit if out of memory */
568	matty	25	void *
569			xmalloc(int size)
570	matty	10	{
571			void *mem = malloc(size);
572			if (mem == NULL)
573			{
574	matty	30	error("xmalloc %d\n", size);
575	matty	10	exit(1);
576			}
577			return mem;
578			}
579
580			/* realloc; exit if out of memory */
581	matty	25	void *
582			xrealloc(void *oldmem, int size)
583	matty	10	{
584			void *mem = realloc(oldmem, size);
585			if (mem == NULL)
586			{
587	matty	30	error("xrealloc %d\n", size);
588	matty	10	exit(1);
589			}
590			return mem;
591			}
592
593			/* free */
594	matty	25	void
595			xfree(void *mem)
596	matty	10	{
597			free(mem);
598			}
599
600	matty	30	/* report an error */
601	matty	25	void
602	matty	30	error(char *format, ...)
603			{
604			va_list ap;
605
606			fprintf(stderr, "ERROR: ");
607
608			va_start(ap, format);
609			vfprintf(stderr, format, ap);
610			va_end(ap);
611			}
612
613	matthewc	297	/* report a warning */
614			void
615			warning(char *format, ...)
616			{
617			va_list ap;
618
619			fprintf(stderr, "WARNING: ");
620
621			va_start(ap, format);
622			vfprintf(stderr, format, ap);
623			va_end(ap);
624			}
625
626	matty	30	/* report an unimplemented protocol feature */
627			void
628			unimpl(char *format, ...)
629			{
630			va_list ap;
631
632			fprintf(stderr, "NOT IMPLEMENTED: ");
633
634			va_start(ap, format);
635			vfprintf(stderr, format, ap);
636			va_end(ap);
637			}
638
639			/* produce a hex dump */
640			void
641	jsorg71	376	hexdump(unsigned char *p, int len)
642	matty	10	{
643			unsigned char *line = p;
644	jsorg71	376	int i, thisline, offset = 0;
645	matty	10
646			while (offset < len)
647			{
648	matthewc	169	printf("%04x ", offset);
649	matty	10	thisline = len - offset;
650			if (thisline > 16)
651			thisline = 16;
652
653			for (i = 0; i < thisline; i++)
654	matthewc	169	printf("%02x ", line[i]);
655	matty	10
656	matty	30	for (; i < 16; i++)
657	matthewc	169	printf(" ");
658	matty	30
659	matty	10	for (i = 0; i < thisline; i++)
660	matthewc	169	printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
661	matty	10
662	matthewc	169	printf("\n");
663	matty	10	offset += thisline;
664			line += thisline;
665			}
666			}
667	astrand	325
668
669			int
670			load_licence(unsigned char **data)
671			{
672	matthewc	367	char home, path;
673	astrand	325	struct stat st;
674	matthewc	367	int fd, length;
675	astrand	325
676			home = getenv("HOME");
677			if (home == NULL)
678			return -1;
679
680	forsberg	416	path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence."));
681	astrand	325	sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
682
683			fd = open(path, O_RDONLY);
684			if (fd == -1)
685			return -1;
686
687			if (fstat(fd, &st))
688			return -1;
689
690	forsberg	416	data = (uint8 ) xmalloc(st.st_size);
691	matthewc	367	length = read(fd, *data, st.st_size);
692			close(fd);
693			xfree(path);
694			return length;
695	astrand	325	}
696
697			void
698			save_licence(unsigned char *data, int length)
699			{
700	matthewc	367	char home, path, *tmppath;
701			int fd;
702	astrand	325
703			home = getenv("HOME");
704			if (home == NULL)
705			return;
706
707	forsberg	416	path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence."));
708	astrand	325
709	matthewc	367	sprintf(path, "%s/.rdesktop", home);
710			if ((mkdir(path, 0700) == -1) && errno != EEXIST)
711	astrand	325	{
712	matthewc	367	perror(path);
713			return;
714	astrand	325	}
715
716	matthewc	367	/* write licence to licence.hostname.new, then atomically rename to licence.hostname */
717	astrand	325
718	matthewc	367	sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
719	forsberg	416	tmppath = (char *) xmalloc(strlen(path) + sizeof(".new"));
720	matthewc	367	strcpy(tmppath, path);
721			strcat(tmppath, ".new");
722
723	forsberg	416	fd = open(tmppath, O_WRONLY \| O_CREAT \| O_TRUNC, 0600);
724	matthewc	367	if (fd == -1)
725	astrand	325	{
726	matthewc	367	perror(tmppath);
727			return;
728	astrand	325	}
729
730	matthewc	367	if (write(fd, data, length) != length)
731	astrand	325	{
732	matthewc	367	perror(tmppath);
733			unlink(tmppath);
734	astrand	325	}
735	matthewc	367	else if (rename(tmppath, path) == -1)
736	astrand	325	{
737	matthewc	367	perror(path);
738			unlink(tmppath);
739	astrand	325	}
740
741	matthewc	367	close(fd);
742			xfree(tmppath);
743			xfree(path);
744	astrand	325	}