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;              /* If width or height are reset to zero, the geometry will
                                   be fetched from _NET_WORKAREA */
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 (*p == 'x')
                                        g_height = strtol(p + 1, NULL, 10);

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