trunk/rdesktop/rdesktop.c

/*
   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 "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 title[32] = "";
char username[16];
char hostname[16];
char keymapname[16];
int keylayout = 0x409;          /* Defaults to US keyboard layout */
int width = 800;                /* If width or height are reset to zero, the geometry will
                                   be fetched from _NET_WORKAREA */
int height = 600;
int tcp_port_rdp = TCP_PORT_RDP;
int server_bpp = 8;
BOOL bitmap_compression = True;
BOOL sendmotion = True;
BOOL orders = True;
BOOL encryption = True;
BOOL desktop_save = True;
BOOL fullscreen = False;
BOOL grab_keyboard = True;
BOOL hide_decorations = False;
extern BOOL owncolmap;

/* 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);
        fprintf(stderr, "   -u: user name\n");
        fprintf(stderr, "   -d: domain\n");
        fprintf(stderr, "   -s: shell\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, "   -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");
}

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;
}

/* Client program */
int
main(int argc, char *argv[])
{
        char server[64];
        char fullhostname[64];
        char domain[16];
        char password[16];
        char shell[128];
        char directory[32];
        BOOL prompt_password;
        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");

        while ((c = getopt(argc, argv, "u:d:s:c:p:n:k:g:a:fbemCKT:Dh?")) != -1)
        {
                switch (c)
                {
                        case 'u':
                                STRNCPY(username, optarg, sizeof(username));
                                username_option = 1;
                                break;

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

                        case 's':
                                STRNCPY(shell, optarg, sizeof(shell));
                                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"))
                                {
                                        width = height = 0;
                                        break;
                                }

                                width = strtol(optarg, &p, 10);
                                if (*p == 'x')
                                        height = strtol(p + 1, NULL, 10);

                                if ((width == 0) || (height == 0))
                                {
                                        error("invalid geometry\n");
                                        return 1;
                                }
                                break;

                        case 'f':
                                fullscreen = True;
                                break;

                        case 'b':
                                orders = False;
                                break;

                        case 'e':
                                encryption = False;
                                break;

                        case 'm':
                                sendmotion = False;
                                break;

                        case 'C':
                                owncolmap = True;
                                break;

                        case 'K':
                                grab_keyboard = False;
                                break;

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

                        case 'D':
                                hide_decorations = True;
                                break;

                        case 'a':
                                server_bpp = strtol(optarg, NULL, 10);
                                if (server_bpp != 8 && server_bpp != 16 && server_bpp != 15
                                    && server_bpp != 24)
                                {
                                        error("invalid server bpp\n");
                                        return 1;
                                }
                                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));
        p = strchr(server, ':');
        if (p != NULL)
        {
                tcp_port_rdp = strtol(p + 1, NULL, 10);
                *p = 0;
        }

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

                STRNCPY(username, pw->pw_name, sizeof(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 (title[0] == 0)
        {
                strcpy(title, "rdesktop - ");
                strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
        }

        if (!ui_init())
                return 1;

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

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

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

        DEBUG(("Disconnecting...\n"));
        rdp_disconnect();
        ui_deinit();
        return 0;
}

#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, unsigned int len)
{
        unsigned char *line = p;
        unsigned int thisline, offset = 0;
        int i;

        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;
        }
}
1	matty	10	/*
2			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	matty	10	#include "rdesktop.h"
30
31	matthewc	220	#ifdef EGD_SOCKET
32			#include <sys/socket.h> /* socket connect */
33			#include <sys/un.h> /* sockaddr_un */
34			#endif
35
36			#ifdef WITH_OPENSSL
37			#include <openssl/md5.h>
38			#else
39			#include "crypto/md5.h"
40			#endif
41
42	astrand	107	char title[32] = "";
43	matty	10	char username[16];
44			char hostname[16];
45	matthewc	38	char keymapname[16];
46	astrand	66	int keylayout = 0x409; /* Defaults to US keyboard layout */
47	jsorg71	309	int width = 800; /* If width or height are reset to zero, the geometry will
48	astrand	263	be fetched from _NET_WORKAREA */
49	matthewc	160	int height = 600;
50	jsorg71	58	int tcp_port_rdp = TCP_PORT_RDP;
51	jsorg71	309	int server_bpp = 8;
52	matty	28	BOOL bitmap_compression = True;
53	matty	29	BOOL sendmotion = True;
54	matty	10	BOOL orders = True;
55	matty	30	BOOL encryption = True;
56	matty	28	BOOL desktop_save = True;
57			BOOL fullscreen = False;
58	astrand	76	BOOL grab_keyboard = True;
59	astrand	262	BOOL hide_decorations = False;
60	n-ki	279	extern BOOL owncolmap;
61	matty	10
62			/* Display usage information */
63	matty	25	static void
64			usage(char *program)
65	matty	10	{
66	matthewc	122	fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
67	matthewc	304	fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n");
68	matthewc	122	fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
69
70	matthewc	222	fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
71	astrand	111	fprintf(stderr, " -u: user name\n");
72			fprintf(stderr, " -d: domain\n");
73			fprintf(stderr, " -s: shell\n");
74			fprintf(stderr, " -c: working directory\n");
75	matthewc	211	fprintf(stderr, " -p: password (- to prompt)\n");
76	astrand	111	fprintf(stderr, " -n: client hostname\n");
77	matthewc	223	fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr,etc.)\n");
78	astrand	111	fprintf(stderr, " -g: desktop geometry (WxH)\n");
79			fprintf(stderr, " -f: full-screen mode\n");
80			fprintf(stderr, " -b: force bitmap updates\n");
81			fprintf(stderr, " -e: disable encryption (French TS)\n");
82			fprintf(stderr, " -m: do not send motion events\n");
83	n-ki	279	fprintf(stderr, " -C: use private colour map\n");
84	astrand	111	fprintf(stderr, " -K: keep window manager key bindings\n");
85	matthewc	223	fprintf(stderr, " -T: window title\n");
86	astrand	262	fprintf(stderr, " -D: hide window manager decorations\n");
87	jsorg71	309	fprintf(stderr, " -a: server bpp\n");
88	matty	10	}
89
90	matthewc	211	static BOOL
91			read_password(char *password, int size)
92			{
93			struct termios tios;
94			BOOL ret = False;
95			int istty = 0;
96			char *p;
97
98			if (tcgetattr(STDIN_FILENO, &tios) == 0)
99			{
100			fprintf(stderr, "Password: ");
101			tios.c_lflag &= ~ECHO;
102			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
103			istty = 1;
104			}
105
106			if (fgets(password, size, stdin) != NULL)
107			{
108			ret = True;
109
110			/* strip final newline */
111			p = strchr(password, '\n');
112			if (p != NULL)
113			*p = 0;
114			}
115
116			if (istty)
117			{
118			tios.c_lflag \|= ECHO;
119			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
120			fprintf(stderr, "\n");
121			}
122
123			return ret;
124			}
125
126	matty	10	/* Client program */
127	matty	25	int
128			main(int argc, char *argv[])
129	matty	10	{
130	matthewc	222	char server[64];
131	matty	30	char fullhostname[64];
132	matty	21	char domain[16];
133			char password[16];
134	astrand	238	char shell[128];
135	matty	21	char directory[32];
136	matthewc	211	BOOL prompt_password;
137	matty	30	struct passwd *pw;
138			uint32 flags;
139	matthewc	222	char *p;
140	matty	10	int c;
141	astrand	289	int username_option = 0;
142	matty	10
143	matty	21	flags = RDP_LOGON_NORMAL;
144	matthewc	211	prompt_password = False;
145	matty	21	domain[0] = password[0] = shell[0] = directory[0] = 0;
146	matthewc	240	strcpy(keymapname, "en-us");
147	matty	21
148	jsorg71	309	while ((c = getopt(argc, argv, "u:d:s:c:p:n:k:g:a:fbemCKT:Dh?")) != -1)
149	matty	10	{
150			switch (c)
151			{
152			case 'u':
153	matty	30	STRNCPY(username, optarg, sizeof(username));
154	astrand	289	username_option = 1;
155	matty	10	break;
156
157	matty	21	case 'd':
158	matty	30	STRNCPY(domain, optarg, sizeof(domain));
159	matty	21	break;
160
161			case 's':
162	matty	30	STRNCPY(shell, optarg, sizeof(shell));
163	matty	21	break;
164
165			case 'c':
166	matty	30	STRNCPY(directory, optarg, sizeof(directory));
167	matty	21	break;
168
169	matty	30	case 'p':
170	matthewc	211	if ((optarg[0] == '-') && (optarg[1] == 0))
171			{
172			prompt_password = True;
173			break;
174			}
175
176	matty	30	STRNCPY(password, optarg, sizeof(password));
177			flags \|= RDP_LOGON_AUTO;
178	matthewc	211
179			/* try to overwrite argument so it won't appear in ps */
180	n-ki	171	p = optarg;
181			while (*p)
182			*(p++) = 'X';
183	matty	30	break;
184
185	matty	10	case 'n':
186	matty	30	STRNCPY(hostname, optarg, sizeof(hostname));
187	matty	10	break;
188
189			case 'k':
190	astrand	82	STRNCPY(keymapname, optarg, sizeof(keymapname));
191	matty	10	break;
192
193	matty	30	case 'g':
194	astrand	263	if (!strcmp(optarg, "workarea"))
195			{
196			width = height = 0;
197			break;
198			}
199
200	matty	30	width = strtol(optarg, &p, 10);
201			if (*p == 'x')
202	astrand	64	height = strtol(p + 1, NULL, 10);
203	matty	30
204			if ((width == 0) \|\| (height == 0))
205			{
206			error("invalid geometry\n");
207			return 1;
208			}
209	matty	10	break;
210
211	matty	30	case 'f':
212			fullscreen = True;
213			break;
214
215	matty	10	case 'b':
216			orders = False;
217			break;
218
219	matty	30	case 'e':
220			encryption = False;
221	matty	10	break;
222
223	matty	30	case 'm':
224			sendmotion = False;
225	matty	28	break;
226	matty	29
227	n-ki	279	case 'C':
228			owncolmap = True;
229			break;
230
231	astrand	76	case 'K':
232			grab_keyboard = False;
233			break;
234
235	matthewc	223	case 'T':
236	matthewc	222	STRNCPY(title, optarg, sizeof(title));
237	astrand	107	break;
238
239	astrand	262	case 'D':
240			hide_decorations = True;
241			break;
242
243	jsorg71	309	case 'a':
244			server_bpp = strtol(optarg, NULL, 10);
245	astrand	318	if (server_bpp != 8 && server_bpp != 16 && server_bpp != 15
246			&& server_bpp != 24)
247	jsorg71	309	{
248			error("invalid server bpp\n");
249			return 1;
250			}
251			break;
252
253	matty	28	case 'h':
254	matty	10	case '?':
255			default:
256			usage(argv[0]);
257			return 1;
258			}
259			}
260
261			if (argc - optind < 1)
262			{
263			usage(argv[0]);
264			return 1;
265			}
266
267	matthewc	222	STRNCPY(server, argv[optind], sizeof(server));
268			p = strchr(server, ':');
269			if (p != NULL)
270			{
271			tcp_port_rdp = strtol(p + 1, NULL, 10);
272			*p = 0;
273			}
274	matty	10
275	astrand	289	if (!username_option)
276	matty	10	{
277			pw = getpwuid(getuid());
278			if ((pw == NULL) \|\| (pw->pw_name == NULL))
279			{
280	matty	30	error("could not determine username, use -u\n");
281	matty	10	return 1;
282			}
283
284	matty	30	STRNCPY(username, pw->pw_name, sizeof(username));
285	matty	10	}
286
287			if (hostname[0] == 0)
288			{
289	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
290	matty	10	{
291	matty	30	error("could not determine local hostname, use -n\n");
292	matty	10	return 1;
293			}
294	matty	30
295			p = strchr(fullhostname, '.');
296			if (p != NULL)
297			*p = 0;
298
299			STRNCPY(hostname, fullhostname, sizeof(hostname));
300	matty	10	}
301
302	matthewc	211	if (prompt_password && read_password(password, sizeof(password)))
303			flags \|= RDP_LOGON_AUTO;
304	matty	30
305	matthewc	211	if (title[0] == 0)
306	astrand	107	{
307			strcpy(title, "rdesktop - ");
308			strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
309			}
310	matty	12
311	astrand	82	if (!ui_init())
312			return 1;
313	astrand	66
314	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
315			return 1;
316
317	matthewc	122	DEBUG(("Connection successful.\n"));
318	matthewc	211	memset(password, 0, sizeof(password));
319	matthewc	53
320	jsorg71	100	if (ui_create_window())
321	matty	10	{
322			rdp_main_loop();
323			ui_destroy_window();
324			}
325
326	matthewc	122	DEBUG(("Disconnecting...\n"));
327	matthewc	53	rdp_disconnect();
328	matthewc	188	ui_deinit();
329	matty	10	return 0;
330			}
331
332	matthewc	220	#ifdef EGD_SOCKET
333			/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
334			static BOOL
335			generate_random_egd(uint8 * buf)
336			{
337			struct sockaddr_un addr;
338			BOOL ret = False;
339			int fd;
340
341			fd = socket(AF_UNIX, SOCK_STREAM, 0);
342			if (fd == -1)
343			return False;
344
345			addr.sun_family = AF_UNIX;
346			memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
347	astrand	259	if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
348	matthewc	220	goto err;
349
350			/* PRNGD and EGD use a simple communications protocol */
351	astrand	259	buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
352			buf[1] = 32; /* Number of requested random bytes */
353	matthewc	220	if (write(fd, buf, 2) != 2)
354			goto err;
355
356	astrand	259	if ((read(fd, buf, 1) != 1) \|\| (buf[0] == 0)) /* Available? */
357	matthewc	220	goto err;
358
359			if (read(fd, buf, 32) != 32)
360			goto err;
361
362			ret = True;
363
364	astrand	259	err:
365	matthewc	220	close(fd);
366			return ret;
367			}
368			#endif
369
370	matty	10	/* Generate a 32-byte random for the secure transport code. */
371	matty	25	void
372	astrand	64	generate_random(uint8 * random)
373	matty	10	{
374			struct stat st;
375	matty	22	struct tms tmsbuf;
376	matthewc	220	MD5_CTX md5;
377			uint32 *r;
378			int fd, n;
379	matty	10
380	matthewc	220	/* If we have a kernel random device, try that first */
381	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
382			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
383	matty	10	{
384	matthewc	220	n = read(fd, random, 32);
385	matty	10	close(fd);
386	matthewc	220	if (n == 32)
387			return;
388	matty	10	}
389
390	matthewc	220	#ifdef EGD_SOCKET
391			/* As a second preference use an EGD */
392			if (generate_random_egd(random))
393			return;
394			#endif
395
396	matty	10	/* Otherwise use whatever entropy we can gather - ideas welcome. */
397	astrand	259	r = (uint32 *) random;
398	matty	10	r[0] = (getpid()) \| (getppid() << 16);
399			r[1] = (getuid()) \| (getgid() << 16);
400	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
401			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
402	matty	10	stat("/tmp", &st);
403			r[5] = st.st_atime;
404			r[6] = st.st_mtime;
405			r[7] = st.st_ctime;
406	matthewc	220
407			/* Hash both halves with MD5 to obscure possible patterns */
408			MD5_Init(&md5);
409	astrand	259	MD5_Update(&md5, random, 16);
410	matthewc	220	MD5_Final(random, &md5);
411	astrand	259	MD5_Update(&md5, random + 16, 16);
412			MD5_Final(random + 16, &md5);
413	matty	10	}
414
415			/* malloc; exit if out of memory */
416	matty	25	void *
417			xmalloc(int size)
418	matty	10	{
419			void *mem = malloc(size);
420			if (mem == NULL)
421			{
422	matty	30	error("xmalloc %d\n", size);
423	matty	10	exit(1);
424			}
425			return mem;
426			}
427
428			/* realloc; exit if out of memory */
429	matty	25	void *
430			xrealloc(void *oldmem, int size)
431	matty	10	{
432			void *mem = realloc(oldmem, size);
433			if (mem == NULL)
434			{
435	matty	30	error("xrealloc %d\n", size);
436	matty	10	exit(1);
437			}
438			return mem;
439			}
440
441			/* free */
442	matty	25	void
443			xfree(void *mem)
444	matty	10	{
445			free(mem);
446			}
447
448	matty	30	/* report an error */
449	matty	25	void
450	matty	30	error(char *format, ...)
451			{
452			va_list ap;
453
454			fprintf(stderr, "ERROR: ");
455
456			va_start(ap, format);
457			vfprintf(stderr, format, ap);
458			va_end(ap);
459			}
460
461	matthewc	297	/* report a warning */
462			void
463			warning(char *format, ...)
464			{
465			va_list ap;
466
467			fprintf(stderr, "WARNING: ");
468
469			va_start(ap, format);
470			vfprintf(stderr, format, ap);
471			va_end(ap);
472			}
473
474	matty	30	/* report an unimplemented protocol feature */
475			void
476			unimpl(char *format, ...)
477			{
478			va_list ap;
479
480			fprintf(stderr, "NOT IMPLEMENTED: ");
481
482			va_start(ap, format);
483			vfprintf(stderr, format, ap);
484			va_end(ap);
485			}
486
487			/* produce a hex dump */
488			void
489	matty	25	hexdump(unsigned char *p, unsigned int len)
490	matty	10	{
491			unsigned char *line = p;
492			unsigned int thisline, offset = 0;
493			int i;
494
495			while (offset < len)
496			{
497	matthewc	169	printf("%04x ", offset);
498	matty	10	thisline = len - offset;
499			if (thisline > 16)
500			thisline = 16;
501
502			for (i = 0; i < thisline; i++)
503	matthewc	169	printf("%02x ", line[i]);
504	matty	10
505	matty	30	for (; i < 16; i++)
506	matthewc	169	printf(" ");
507	matty	30
508	matty	10	for (i = 0; i < thisline; i++)
509	matthewc	169	printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
510	matty	10
511	matthewc	169	printf("\n");
512	matty	10	offset += thisline;
513			line += thisline;
514			}
515			}