seamlessrdp-branch/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 WITH_RDPSND
BOOL g_rdpsnd = True;
#endif

#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");
#ifdef WITH_RDPSND
        fprintf(stderr, "   -A: disable audio-redirection\n");
#endif
        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:AD045h?")) != -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;

#ifdef WITH_RDPSND
                        case 'A':
                                g_rdpsnd = False;
                                break;
#endif
                        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
        if (g_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	stargo	501	#ifdef WITH_RDPSND
72			BOOL g_rdpsnd = True;
73			#endif
74
75	astrand	333	#ifdef RDP2VNC
76			extern int rfb_port;
77			extern int defer_time;
78			void
79			rdp2vnc_connect(char server, uint32 flags, char domain, char *password,
80			char shell, char directory);
81			#endif
82	matty	10	/* Display usage information */
83	matty	25	static void
84			usage(char *program)
85	matty	10	{
86	matthewc	122	fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
87	matthewc	304	fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n");
88	matthewc	122	fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
89
90	matthewc	222	fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
91	astrand	333	#ifdef RDP2VNC
92			fprintf(stderr, " -V: vnc port\n");
93	forsberg	471	fprintf(stderr, " -Q: defer time (ms)\n");
94	astrand	333	#endif
95	astrand	111	fprintf(stderr, " -u: user name\n");
96			fprintf(stderr, " -d: domain\n");
97			fprintf(stderr, " -s: shell\n");
98	astrand	329	fprintf(stderr, " -S: caption button size (single application mode)\n");
99	astrand	111	fprintf(stderr, " -c: working directory\n");
100	matthewc	211	fprintf(stderr, " -p: password (- to prompt)\n");
101	astrand	111	fprintf(stderr, " -n: client hostname\n");
102	matthewc	223	fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr,etc.)\n");
103	astrand	111	fprintf(stderr, " -g: desktop geometry (WxH)\n");
104			fprintf(stderr, " -f: full-screen mode\n");
105			fprintf(stderr, " -b: force bitmap updates\n");
106			fprintf(stderr, " -e: disable encryption (French TS)\n");
107	forsberg	471	fprintf(stderr, " -E: disable encryption from client to server\n");
108	astrand	111	fprintf(stderr, " -m: do not send motion events\n");
109	n-ki	279	fprintf(stderr, " -C: use private colour map\n");
110	astrand	111	fprintf(stderr, " -K: keep window manager key bindings\n");
111	matthewc	223	fprintf(stderr, " -T: window title\n");
112	astrand	262	fprintf(stderr, " -D: hide window manager decorations\n");
113	stargo	501	#ifdef WITH_RDPSND
114			fprintf(stderr, " -A: disable audio-redirection\n");
115			#endif
116	jsorg71	309	fprintf(stderr, " -a: server bpp\n");
117	matthewc	482	fprintf(stderr, " -0: attach to console\n");
118			fprintf(stderr, " -4: use RDP version 4\n");
119			fprintf(stderr, " -5: use RDP version 5 (default)\n");
120	matty	10	}
121
122	matthewc	211	static BOOL
123			read_password(char *password, int size)
124			{
125			struct termios tios;
126			BOOL ret = False;
127			int istty = 0;
128			char *p;
129
130			if (tcgetattr(STDIN_FILENO, &tios) == 0)
131			{
132			fprintf(stderr, "Password: ");
133			tios.c_lflag &= ~ECHO;
134			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
135			istty = 1;
136			}
137
138			if (fgets(password, size, stdin) != NULL)
139			{
140			ret = True;
141
142			/* strip final newline */
143			p = strchr(password, '\n');
144			if (p != NULL)
145			*p = 0;
146			}
147
148			if (istty)
149			{
150			tios.c_lflag \|= ECHO;
151			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
152			fprintf(stderr, "\n");
153			}
154
155			return ret;
156			}
157
158	astrand	444	static void
159			parse_server_and_port(char *server)
160			{
161			char *p;
162			#ifdef IPv6
163			int addr_colons;
164			#endif
165
166			#ifdef IPv6
167			p = server;
168			addr_colons = 0;
169			while (*p)
170			if (*p++ == ':')
171			addr_colons++;
172			if (addr_colons >= 2)
173			{
174			/* numeric IPv6 style address format - [1:2:3::4]:port */
175			p = strchr(server, ']');
176			if (*server == '[' && p != NULL)
177			{
178			if ((p + 1) == ':' && (p + 2) != '\0')
179			tcp_port_rdp = strtol(p + 2, NULL, 10);
180			/* remove the port number and brackets from the address */
181			*p = '\0';
182			strncpy(server, server + 1, strlen(server));
183			}
184			}
185			else
186			{
187			/* dns name or IPv4 style address format - server.example.com:port or 1.2.3.4:port */
188			p = strchr(server, ':');
189			if (p != NULL)
190			{
191			tcp_port_rdp = strtol(p + 1, NULL, 10);
192			*p = 0;
193			}
194			}
195			#else /* no IPv6 support */
196			p = strchr(server, ':');
197			if (p != NULL)
198			{
199			tcp_port_rdp = strtol(p + 1, NULL, 10);
200			*p = 0;
201			}
202			#endif /* IPv6 */
203
204			}
205
206	matty	10	/* Client program */
207	matty	25	int
208			main(int argc, char *argv[])
209	matty	10	{
210	matthewc	222	char server[64];
211	matty	30	char fullhostname[64];
212	matty	21	char domain[16];
213	astrand	479	char password[64];
214	astrand	238	char shell[128];
215	matty	21	char directory[32];
216	forsberg	424	BOOL prompt_password, rdp_retval = False;
217	matty	30	struct passwd *pw;
218			uint32 flags;
219	matthewc	222	char *p;
220	matty	10	int c;
221	astrand	289	int username_option = 0;
222	matty	10
223	matty	21	flags = RDP_LOGON_NORMAL;
224	matthewc	211	prompt_password = False;
225	matty	21	domain[0] = password[0] = shell[0] = directory[0] = 0;
226	matthewc	240	strcpy(keymapname, "en-us");
227	matty	21
228	astrand	333	#ifdef RDP2VNC
229	forsberg	471	#define VNCOPT "V:Q:"
230	astrand	333	#else
231			#define VNCOPT
232			#endif
233
234	stargo	501	while ((c = getopt(argc, argv, VNCOPT "u:d:s:S:c:p:n:k:g:a:fbeEmCKT:AD045h?")) != -1)
235	matty	10	{
236			switch (c)
237			{
238	astrand	333	#ifdef RDP2VNC
239			case 'V':
240			rfb_port = strtol(optarg, NULL, 10);
241			if (rfb_port < 100)
242			rfb_port += 5900;
243			break;
244
245	forsberg	471	case 'Q':
246	astrand	333	defer_time = strtol(optarg, NULL, 10);
247			if (defer_time < 0)
248			defer_time = 0;
249			break;
250			#endif
251
252	matty	10	case 'u':
253	jsorg71	437	STRNCPY(g_username, optarg, sizeof(g_username));
254	astrand	289	username_option = 1;
255	matty	10	break;
256
257	matty	21	case 'd':
258	matty	30	STRNCPY(domain, optarg, sizeof(domain));
259	matty	21	break;
260
261			case 's':
262	matty	30	STRNCPY(shell, optarg, sizeof(shell));
263	matty	21	break;
264
265	astrand	328	case 'S':
266			if (!strcmp(optarg, "standard"))
267			{
268	jsorg71	450	g_win_button_size = 18;
269	astrand	328	break;
270			}
271
272	jsorg71	450	g_win_button_size = strtol(optarg, &p, 10);
273	astrand	328
274			if (*p)
275			{
276			error("invalid button size\n");
277			return 1;
278			}
279
280			break;
281
282	matty	21	case 'c':
283	matty	30	STRNCPY(directory, optarg, sizeof(directory));
284	matty	21	break;
285
286	matty	30	case 'p':
287	matthewc	211	if ((optarg[0] == '-') && (optarg[1] == 0))
288			{
289			prompt_password = True;
290			break;
291			}
292
293	matty	30	STRNCPY(password, optarg, sizeof(password));
294			flags \|= RDP_LOGON_AUTO;
295	matthewc	211
296			/* try to overwrite argument so it won't appear in ps */
297	n-ki	171	p = optarg;
298			while (*p)
299			*(p++) = 'X';
300	matty	30	break;
301
302	matty	10	case 'n':
303	matty	30	STRNCPY(hostname, optarg, sizeof(hostname));
304	matty	10	break;
305
306			case 'k':
307	astrand	82	STRNCPY(keymapname, optarg, sizeof(keymapname));
308	matty	10	break;
309
310	matty	30	case 'g':
311	astrand	263	if (!strcmp(optarg, "workarea"))
312			{
313	jsorg71	447	g_width = g_height = 0;
314	astrand	263	break;
315			}
316
317	jsorg71	447	g_width = strtol(optarg, &p, 10);
318	astrand	500	if (g_width <= 0)
319			{
320			error("invalid geometry\n");
321			return 1;
322			}
323
324	matty	30	if (*p == 'x')
325	jsorg71	447	g_height = strtol(p + 1, NULL, 10);
326	matty	30
327	astrand	500	if (g_height <= 0)
328	matty	30	{
329			error("invalid geometry\n");
330			return 1;
331			}
332	astrand	500
333			if (*p == '%')
334			g_width = -g_width;
335
336	matty	10	break;
337
338	matty	30	case 'f':
339	jsorg71	447	g_fullscreen = True;
340	matty	30	break;
341
342	matty	10	case 'b':
343	jsorg71	437	g_orders = False;
344	matty	10	break;
345
346	matty	30	case 'e':
347	jsorg71	437	g_encryption = False;
348	matty	10	break;
349	astrand	435	case 'E':
350	forsberg	427	packet_encryption = False;
351			break;
352	matty	30	case 'm':
353	jsorg71	447	g_sendmotion = False;
354	matty	28	break;
355	matty	29
356	n-ki	279	case 'C':
357	jsorg71	450	g_owncolmap = True;
358	n-ki	279	break;
359
360	astrand	76	case 'K':
361	jsorg71	450	g_grab_keyboard = False;
362	astrand	76	break;
363
364	matthewc	223	case 'T':
365	jsorg71	450	STRNCPY(g_title, optarg, sizeof(g_title));
366	astrand	107	break;
367
368	astrand	262	case 'D':
369	jsorg71	450	g_hide_decorations = True;
370	astrand	262	break;
371
372	jsorg71	309	case 'a':
373	jsorg71	438	g_server_bpp = strtol(optarg, NULL, 10);
374			if (g_server_bpp != 8 && g_server_bpp != 16 && g_server_bpp != 15
375			&& g_server_bpp != 24)
376	jsorg71	309	{
377			error("invalid server bpp\n");
378			return 1;
379			}
380			break;
381
382	stargo	501	#ifdef WITH_RDPSND
383			case 'A':
384			g_rdpsnd = False;
385			break;
386			#endif
387	matthewc	482	case '0':
388			g_console_session = True;
389			break;
390
391	astrand	458	case '4':
392			g_use_rdp5 = False;
393			break;
394
395	forsberg	350	case '5':
396	jsorg71	438	g_use_rdp5 = True;
397	forsberg	350	break;
398	astrand	458
399	matty	28	case 'h':
400	matty	10	case '?':
401			default:
402			usage(argv[0]);
403			return 1;
404			}
405			}
406
407			if (argc - optind < 1)
408			{
409			usage(argv[0]);
410			return 1;
411			}
412
413	matthewc	222	STRNCPY(server, argv[optind], sizeof(server));
414	astrand	444	parse_server_and_port(server);
415	matty	10
416	astrand	289	if (!username_option)
417	matty	10	{
418			pw = getpwuid(getuid());
419			if ((pw == NULL) \|\| (pw->pw_name == NULL))
420			{
421	matty	30	error("could not determine username, use -u\n");
422	matty	10	return 1;
423			}
424
425	jsorg71	437	STRNCPY(g_username, pw->pw_name, sizeof(g_username));
426	matty	10	}
427
428			if (hostname[0] == 0)
429			{
430	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
431	matty	10	{
432	matty	30	error("could not determine local hostname, use -n\n");
433	matty	10	return 1;
434			}
435	matty	30
436			p = strchr(fullhostname, '.');
437			if (p != NULL)
438			*p = 0;
439
440			STRNCPY(hostname, fullhostname, sizeof(hostname));
441	matty	10	}
442
443	matthewc	211	if (prompt_password && read_password(password, sizeof(password)))
444			flags \|= RDP_LOGON_AUTO;
445	matty	30
446	jsorg71	450	if (g_title[0] == 0)
447	astrand	107	{
448	jsorg71	450	strcpy(g_title, "rdesktop - ");
449			strncat(g_title, server, sizeof(g_title) - sizeof("rdesktop - "));
450	astrand	107	}
451	matty	12
452	astrand	333	#ifdef RDP2VNC
453			rdp2vnc_connect(server, flags, domain, password, shell, directory);
454	forsberg	424	return 0;
455	astrand	333	#else
456
457	astrand	82	if (!ui_init())
458			return 1;
459	astrand	66
460	matthewc	474	#ifdef WITH_RDPSND
461	stargo	501	if (g_rdpsnd)
462			{
463			rdpsnd_init();
464			}
465	matthewc	474	#endif
466	matthewc	432	/* rdpdr_init(); */
467	forsberg	416
468	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
469			return 1;
470
471	forsberg	427	/* By setting encryption to False here, we have an encrypted login
472			packet but unencrypted transfer of other packets */
473	astrand	435	if (!packet_encryption)
474	jsorg71	437	g_encryption = False;
475	forsberg	427
476
477	matthewc	122	DEBUG(("Connection successful.\n"));
478	matthewc	211	memset(password, 0, sizeof(password));
479	matthewc	53
480	jsorg71	100	if (ui_create_window())
481	matty	10	{
482	forsberg	424	rdp_retval = rdp_main_loop();
483	matty	10	ui_destroy_window();
484			}
485
486	matthewc	122	DEBUG(("Disconnecting...\n"));
487	matthewc	53	rdp_disconnect();
488	matthewc	188	ui_deinit();
489	astrand	333
490	astrand	435	if (True == rdp_retval)
491	forsberg	424	return 0;
492			else
493			return 2;
494
495	astrand	333	#endif
496
497	matty	10	}
498
499	matthewc	220	#ifdef EGD_SOCKET
500			/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
501			static BOOL
502			generate_random_egd(uint8 * buf)
503			{
504			struct sockaddr_un addr;
505			BOOL ret = False;
506			int fd;
507
508			fd = socket(AF_UNIX, SOCK_STREAM, 0);
509			if (fd == -1)
510			return False;
511
512			addr.sun_family = AF_UNIX;
513			memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
514	astrand	259	if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
515	matthewc	220	goto err;
516
517			/* PRNGD and EGD use a simple communications protocol */
518	astrand	259	buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
519			buf[1] = 32; /* Number of requested random bytes */
520	matthewc	220	if (write(fd, buf, 2) != 2)
521			goto err;
522
523	astrand	259	if ((read(fd, buf, 1) != 1) \|\| (buf[0] == 0)) /* Available? */
524	matthewc	220	goto err;
525
526			if (read(fd, buf, 32) != 32)
527			goto err;
528
529			ret = True;
530
531	astrand	259	err:
532	matthewc	220	close(fd);
533			return ret;
534			}
535			#endif
536
537	matty	10	/* Generate a 32-byte random for the secure transport code. */
538	matty	25	void
539	astrand	64	generate_random(uint8 * random)
540	matty	10	{
541			struct stat st;
542	matty	22	struct tms tmsbuf;
543	matthewc	220	MD5_CTX md5;
544			uint32 *r;
545			int fd, n;
546	matty	10
547	matthewc	220	/* If we have a kernel random device, try that first */
548	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
549			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
550	matty	10	{
551	matthewc	220	n = read(fd, random, 32);
552	matty	10	close(fd);
553	matthewc	220	if (n == 32)
554			return;
555	matty	10	}
556
557	matthewc	220	#ifdef EGD_SOCKET
558			/* As a second preference use an EGD */
559			if (generate_random_egd(random))
560			return;
561			#endif
562
563	matty	10	/* Otherwise use whatever entropy we can gather - ideas welcome. */
564	astrand	259	r = (uint32 *) random;
565	matty	10	r[0] = (getpid()) \| (getppid() << 16);
566			r[1] = (getuid()) \| (getgid() << 16);
567	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
568			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
569	matty	10	stat("/tmp", &st);
570			r[5] = st.st_atime;
571			r[6] = st.st_mtime;
572			r[7] = st.st_ctime;
573	matthewc	220
574			/* Hash both halves with MD5 to obscure possible patterns */
575			MD5_Init(&md5);
576	astrand	259	MD5_Update(&md5, random, 16);
577	matthewc	220	MD5_Final(random, &md5);
578	astrand	259	MD5_Update(&md5, random + 16, 16);
579			MD5_Final(random + 16, &md5);
580	matty	10	}
581
582			/* malloc; exit if out of memory */
583	matty	25	void *
584			xmalloc(int size)
585	matty	10	{
586			void *mem = malloc(size);
587			if (mem == NULL)
588			{
589	matty	30	error("xmalloc %d\n", size);
590	matty	10	exit(1);
591			}
592			return mem;
593			}
594
595			/* realloc; exit if out of memory */
596	matty	25	void *
597			xrealloc(void *oldmem, int size)
598	matty	10	{
599			void *mem = realloc(oldmem, size);
600			if (mem == NULL)
601			{
602	matty	30	error("xrealloc %d\n", size);
603	matty	10	exit(1);
604			}
605			return mem;
606			}
607
608			/* free */
609	matty	25	void
610			xfree(void *mem)
611	matty	10	{
612			free(mem);
613			}
614
615	matty	30	/* report an error */
616	matty	25	void
617	matty	30	error(char *format, ...)
618			{
619			va_list ap;
620
621			fprintf(stderr, "ERROR: ");
622
623			va_start(ap, format);
624			vfprintf(stderr, format, ap);
625			va_end(ap);
626			}
627
628	matthewc	297	/* report a warning */
629			void
630			warning(char *format, ...)
631			{
632			va_list ap;
633
634			fprintf(stderr, "WARNING: ");
635
636			va_start(ap, format);
637			vfprintf(stderr, format, ap);
638			va_end(ap);
639			}
640
641	matty	30	/* report an unimplemented protocol feature */
642			void
643			unimpl(char *format, ...)
644			{
645			va_list ap;
646
647			fprintf(stderr, "NOT IMPLEMENTED: ");
648
649			va_start(ap, format);
650			vfprintf(stderr, format, ap);
651			va_end(ap);
652			}
653
654			/* produce a hex dump */
655			void
656	jsorg71	376	hexdump(unsigned char *p, int len)
657	matty	10	{
658			unsigned char *line = p;
659	jsorg71	376	int i, thisline, offset = 0;
660	matty	10
661			while (offset < len)
662			{
663	matthewc	169	printf("%04x ", offset);
664	matty	10	thisline = len - offset;
665			if (thisline > 16)
666			thisline = 16;
667
668			for (i = 0; i < thisline; i++)
669	matthewc	169	printf("%02x ", line[i]);
670	matty	10
671	matty	30	for (; i < 16; i++)
672	matthewc	169	printf(" ");
673	matty	30
674	matty	10	for (i = 0; i < thisline; i++)
675	matthewc	169	printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
676	matty	10
677	matthewc	169	printf("\n");
678	matty	10	offset += thisline;
679			line += thisline;
680			}
681			}
682	astrand	325
683
684			int
685			load_licence(unsigned char **data)
686			{
687	matthewc	367	char home, path;
688	astrand	325	struct stat st;
689	matthewc	367	int fd, length;
690	astrand	325
691			home = getenv("HOME");
692			if (home == NULL)
693			return -1;
694
695	forsberg	416	path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence."));
696	astrand	325	sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
697
698			fd = open(path, O_RDONLY);
699			if (fd == -1)
700			return -1;
701
702			if (fstat(fd, &st))
703			return -1;
704
705	forsberg	416	data = (uint8 ) xmalloc(st.st_size);
706	matthewc	367	length = read(fd, *data, st.st_size);
707			close(fd);
708			xfree(path);
709			return length;
710	astrand	325	}
711
712			void
713			save_licence(unsigned char *data, int length)
714			{
715	matthewc	367	char home, path, *tmppath;
716			int fd;
717	astrand	325
718			home = getenv("HOME");
719			if (home == NULL)
720			return;
721
722	forsberg	416	path = (char *) xmalloc(strlen(home) + strlen(hostname) + sizeof("/.rdesktop/licence."));
723	astrand	325
724	matthewc	367	sprintf(path, "%s/.rdesktop", home);
725			if ((mkdir(path, 0700) == -1) && errno != EEXIST)
726	astrand	325	{
727	matthewc	367	perror(path);
728			return;
729	astrand	325	}
730
731	matthewc	367	/* write licence to licence.hostname.new, then atomically rename to licence.hostname */
732	astrand	325
733	matthewc	367	sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
734	forsberg	416	tmppath = (char *) xmalloc(strlen(path) + sizeof(".new"));
735	matthewc	367	strcpy(tmppath, path);
736			strcat(tmppath, ".new");
737
738	forsberg	416	fd = open(tmppath, O_WRONLY \| O_CREAT \| O_TRUNC, 0600);
739	matthewc	367	if (fd == -1)
740	astrand	325	{
741	matthewc	367	perror(tmppath);
742			return;
743	astrand	325	}
744
745	matthewc	367	if (write(fd, data, length) != length)
746	astrand	325	{
747	matthewc	367	perror(tmppath);
748			unlink(tmppath);
749	astrand	325	}
750	matthewc	367	else if (rename(tmppath, path) == -1)
751	astrand	325	{
752	matthewc	367	perror(path);
753			unlink(tmppath);
754	astrand	325	}
755
756	matthewc	367	close(fd);
757			xfree(tmppath);
758			xfree(path);
759	astrand	325	}