trunk/rdesktop/rdesktop.c

/*
   rdesktop: A Remote Desktop Protocol client.
   Entrypoint and utility functions
   Copyright (C) Matthew Chapman 1999-2002

   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 <stdlib.h>             /* malloc realloc free */
#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 <limits.h>             /* PATH_MAX */
#include <sys/stat.h>           /* stat */
#include <sys/time.h>           /* gettimeofday */
#include <sys/times.h>          /* times */
#include "rdesktop.h"

char title[32] = "";
char username[16];
char hostname[16];
char keymapname[16];
int keylayout = 0x409;          /* Defaults to US keyboard layout */
int width;
int height;
int tcp_port_rdp = TCP_PORT_RDP;
BOOL bitmap_compression = True;
BOOL sendmotion = True;
BOOL orders = True;
BOOL licence = True;
BOOL encryption = True;
BOOL desktop_save = True;
BOOL fullscreen = False;
BOOL grab_keyboard = True;

/* Display usage information */
static void
usage(char *program)
{
        fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
        fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2002 Matt Chapman.\n");
        fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");

        fprintf(stderr, "Usage: %s [options] server\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 (autologon)\n");
        fprintf(stderr, "   -P: askpass-program (autologon)\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, "   -l: do not request licence\n");
        fprintf(stderr, "   -t: rdp tcp port\n");
        fprintf(stderr, "   -K: keep window manager key bindings\n");
        fprintf(stderr, "   -w: window title\n");
}

/* Client program */
int
main(int argc, char *argv[])
{
        char fullhostname[64];
        char domain[16];
        char password[16];
        char *askpass_result;
        char shell[32];
        char directory[32];
        struct passwd *pw;
        char *server, *p;
        uint32 flags;
        int c;

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

        while ((c = getopt(argc, argv, "u:d:s:c:p:P:n:k:g:t:fbemlKw:h?")) != -1)
        {
                switch (c)
                {
                        case 'u':
                                STRNCPY(username, optarg, sizeof(username));
                                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':
                                STRNCPY(password, optarg, sizeof(password));
                                flags |= RDP_LOGON_AUTO;
                                break;

                        case 'P':
                                askpass_result = askpass(optarg, "Enter password");
                                if (askpass_result == NULL)
                                        exit(1);

                                STRNCPY(password, askpass_result, sizeof(password));
                                free(askpass_result);
                                flags |= RDP_LOGON_AUTO;
                                break;

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

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

                        case 'g':
                                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 'l':
                                licence = False;
                                break;

                        case 't':
                                tcp_port_rdp = strtol(optarg, NULL, 10);
                                break;

                        case 'K':
                                grab_keyboard = False;
                                break;

                        case 'w':
                                strncpy(title, optarg, sizeof(title));
                                break;

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

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

        server = argv[optind];

        if (username[0] == 0)
        {
                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 (!strcmp(password, "-"))
        {
                p = getpass("Password: ");
                if (p == NULL)
                {
                        error("failed to read password\n");
                        return 0;
                }
                STRNCPY(password, p, sizeof(password));
        }

        if ((width == 0) || (height == 0))
        {
                width = 800;
                height = 600;
        }
        else
        {
                /* make sure width is a multiple of 4 */
                width = (width + 3) & ~3;
        }

        if (!strlen(title))
        {
                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"));

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

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

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

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

        /* Otherwise use whatever entropy we can gather - ideas welcome. */
        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;
}

/* 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 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)
        {
                fprintf(stderr, "%04x ", offset);
                thisline = len - offset;
                if (thisline > 16)
                        thisline = 16;

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

                for (; i < 16; i++)
                        fprintf(stderr, "   ");

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

                fprintf(stderr, "\n");
                offset += thisline;
                line += thisline;
        }
}

int
load_licence(unsigned char **data)
{
        char path[PATH_MAX];
        char *home;
        struct stat st;
        int fd;

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

        STRNCPY(path, home, sizeof(path));
        strncat(path, "/.rdesktop/licence", sizeof(path) - strlen(path) - 1);

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

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

        *data = xmalloc(st.st_size);
        return read(fd, *data, st.st_size);
}

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

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

        STRNCPY(path, home, sizeof(path));
        strncat(path, "/.rdesktop", sizeof(path) - strlen(path) - 1);
        mkdir(path, 0700);

        strncat(path, "/licence", sizeof(path) - strlen(path) - 1);

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

        write(fd, data, length);
        close(fd);
}
1	matty	10	/*
2			rdesktop: A Remote Desktop Protocol client.
3			Entrypoint and utility functions
4	matthewc	122	Copyright (C) Matthew Chapman 1999-2002
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	24	#include <stdlib.h> /* malloc realloc free */
22	matty	30	#include <stdarg.h> /* va_list va_start va_end */
23	matty	24	#include <unistd.h> /* read close getuid getgid getpid getppid gethostname */
24			#include <fcntl.h> /* open */
25			#include <pwd.h> /* getpwuid */
26	matthewc	39	#include <limits.h> /* PATH_MAX */
27	matty	24	#include <sys/stat.h> /* stat */
28			#include <sys/time.h> /* gettimeofday */
29			#include <sys/times.h> /* times */
30	matty	10	#include "rdesktop.h"
31
32	astrand	107	char title[32] = "";
33	matty	10	char username[16];
34			char hostname[16];
35	matthewc	38	char keymapname[16];
36	astrand	66	int keylayout = 0x409; /* Defaults to US keyboard layout */
37	matty	30	int width;
38			int height;
39	jsorg71	58	int tcp_port_rdp = TCP_PORT_RDP;
40	matty	28	BOOL bitmap_compression = True;
41	matty	29	BOOL sendmotion = True;
42	matty	10	BOOL orders = True;
43			BOOL licence = True;
44	matty	30	BOOL encryption = True;
45	matty	28	BOOL desktop_save = True;
46			BOOL fullscreen = False;
47	astrand	76	BOOL grab_keyboard = True;
48	matty	10
49			/* Display usage information */
50	matty	25	static void
51			usage(char *program)
52	matty	10	{
53	matthewc	122	fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
54			fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2002 Matt Chapman.\n");
55			fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
56
57	astrand	111	fprintf(stderr, "Usage: %s [options] server\n", program);
58			fprintf(stderr, " -u: user name\n");
59			fprintf(stderr, " -d: domain\n");
60			fprintf(stderr, " -s: shell\n");
61			fprintf(stderr, " -c: working directory\n");
62			fprintf(stderr, " -p: password (autologon)\n");
63			fprintf(stderr, " -P: askpass-program (autologon)\n");
64			fprintf(stderr, " -n: client hostname\n");
65			fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr etc.)\n");
66			fprintf(stderr, " -g: desktop geometry (WxH)\n");
67			fprintf(stderr, " -f: full-screen mode\n");
68			fprintf(stderr, " -b: force bitmap updates\n");
69			fprintf(stderr, " -e: disable encryption (French TS)\n");
70			fprintf(stderr, " -m: do not send motion events\n");
71			fprintf(stderr, " -l: do not request licence\n");
72			fprintf(stderr, " -t: rdp tcp port\n");
73			fprintf(stderr, " -K: keep window manager key bindings\n");
74			fprintf(stderr, " -w: window title\n");
75	matty	10	}
76
77			/* Client program */
78	matty	25	int
79			main(int argc, char *argv[])
80	matty	10	{
81	matty	30	char fullhostname[64];
82	matty	21	char domain[16];
83			char password[16];
84	astrand	96	char *askpass_result;
85	matty	21	char shell[32];
86			char directory[32];
87	matty	30	struct passwd *pw;
88			char server, p;
89			uint32 flags;
90	matty	10	int c;
91
92	matty	21	flags = RDP_LOGON_NORMAL;
93			domain[0] = password[0] = shell[0] = directory[0] = 0;
94	matthewc	38	strcpy(keymapname, "us");
95	matty	21
96	astrand	107	while ((c = getopt(argc, argv, "u:d:s:c:p:P:n:k:g:t:fbemlKw:h?")) != -1)
97	matty	10	{
98			switch (c)
99			{
100			case 'u':
101	matty	30	STRNCPY(username, optarg, sizeof(username));
102	matty	10	break;
103
104	matty	21	case 'd':
105	matty	30	STRNCPY(domain, optarg, sizeof(domain));
106	matty	21	break;
107
108			case 's':
109	matty	30	STRNCPY(shell, optarg, sizeof(shell));
110	matty	21	break;
111
112			case 'c':
113	matty	30	STRNCPY(directory, optarg, sizeof(directory));
114	matty	21	break;
115
116	matty	30	case 'p':
117			STRNCPY(password, optarg, sizeof(password));
118			flags \|= RDP_LOGON_AUTO;
119			break;
120
121	astrand	96	case 'P':
122			askpass_result = askpass(optarg, "Enter password");
123			if (askpass_result == NULL)
124			exit(1);
125
126			STRNCPY(password, askpass_result, sizeof(password));
127			free(askpass_result);
128			flags \|= RDP_LOGON_AUTO;
129			break;
130
131	matty	10	case 'n':
132	matty	30	STRNCPY(hostname, optarg, sizeof(hostname));
133	matty	10	break;
134
135			case 'k':
136	astrand	82	STRNCPY(keymapname, optarg, sizeof(keymapname));
137	matty	10	break;
138
139	matty	30	case 'g':
140			width = strtol(optarg, &p, 10);
141			if (*p == 'x')
142	astrand	64	height = strtol(p + 1, NULL, 10);
143	matty	30
144			if ((width == 0) \|\| (height == 0))
145			{
146			error("invalid geometry\n");
147			return 1;
148			}
149	matty	10	break;
150
151	matty	30	case 'f':
152			fullscreen = True;
153			break;
154
155	matty	10	case 'b':
156			orders = False;
157			break;
158
159	matty	30	case 'e':
160			encryption = False;
161	matty	10	break;
162
163	matty	30	case 'm':
164			sendmotion = False;
165	matty	28	break;
166	matty	29
167	matty	30	case 'l':
168			licence = False;
169	matty	28	break;
170	matty	29
171	jsorg71	58	case 't':
172			tcp_port_rdp = strtol(optarg, NULL, 10);
173			break;
174
175	astrand	76	case 'K':
176			grab_keyboard = False;
177			break;
178
179	astrand	107	case 'w':
180			strncpy(title, optarg, sizeof(title));
181			break;
182
183	matty	28	case 'h':
184	matty	10	case '?':
185			default:
186			usage(argv[0]);
187			return 1;
188			}
189			}
190
191			if (argc - optind < 1)
192			{
193			usage(argv[0]);
194			return 1;
195			}
196
197			server = argv[optind];
198
199			if (username[0] == 0)
200			{
201			pw = getpwuid(getuid());
202			if ((pw == NULL) \|\| (pw->pw_name == NULL))
203			{
204	matty	30	error("could not determine username, use -u\n");
205	matty	10	return 1;
206			}
207
208	matty	30	STRNCPY(username, pw->pw_name, sizeof(username));
209	matty	10	}
210
211			if (hostname[0] == 0)
212			{
213	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
214	matty	10	{
215	matty	30	error("could not determine local hostname, use -n\n");
216	matty	10	return 1;
217			}
218	matty	30
219			p = strchr(fullhostname, '.');
220			if (p != NULL)
221			*p = 0;
222
223			STRNCPY(hostname, fullhostname, sizeof(hostname));
224	matty	10	}
225
226	matty	30	if (!strcmp(password, "-"))
227			{
228			p = getpass("Password: ");
229			if (p == NULL)
230			{
231			error("failed to read password\n");
232			return 0;
233			}
234			STRNCPY(password, p, sizeof(password));
235			}
236
237			if ((width == 0) \|\| (height == 0))
238			{
239			width = 800;
240			height = 600;
241			}
242	matthewc	103	else
243			{
244			/* make sure width is a multiple of 4 */
245			width = (width + 3) & ~3;
246			}
247	matty	30
248	astrand	114	if (!strlen(title))
249	astrand	107	{
250			strcpy(title, "rdesktop - ");
251			strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
252			}
253	matty	12
254	astrand	82	if (!ui_init())
255			return 1;
256	astrand	66
257	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
258			return 1;
259
260	matthewc	122	DEBUG(("Connection successful.\n"));
261	matthewc	53
262	jsorg71	100	if (ui_create_window())
263	matty	10	{
264			rdp_main_loop();
265			ui_destroy_window();
266			}
267
268	matthewc	122	DEBUG(("Disconnecting...\n"));
269	matthewc	53	rdp_disconnect();
270	matty	10	return 0;
271			}
272
273			/* Generate a 32-byte random for the secure transport code. */
274	matty	25	void
275	astrand	64	generate_random(uint8 * random)
276	matty	10	{
277			struct stat st;
278	matty	22	struct tms tmsbuf;
279	matty	24	uint32 r = (uint32 ) random;
280	matty	10	int fd;
281
282			/* If we have a kernel random device, use it. */
283	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
284			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
285	matty	10	{
286			read(fd, random, 32);
287			close(fd);
288			return;
289			}
290
291			/* Otherwise use whatever entropy we can gather - ideas welcome. */
292			r[0] = (getpid()) \| (getppid() << 16);
293			r[1] = (getuid()) \| (getgid() << 16);
294	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
295			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
296	matty	10	stat("/tmp", &st);
297			r[5] = st.st_atime;
298			r[6] = st.st_mtime;
299			r[7] = st.st_ctime;
300			}
301
302			/* malloc; exit if out of memory */
303	matty	25	void *
304			xmalloc(int size)
305	matty	10	{
306			void *mem = malloc(size);
307			if (mem == NULL)
308			{
309	matty	30	error("xmalloc %d\n", size);
310	matty	10	exit(1);
311			}
312			return mem;
313			}
314
315			/* realloc; exit if out of memory */
316	matty	25	void *
317			xrealloc(void *oldmem, int size)
318	matty	10	{
319			void *mem = realloc(oldmem, size);
320			if (mem == NULL)
321			{
322	matty	30	error("xrealloc %d\n", size);
323	matty	10	exit(1);
324			}
325			return mem;
326			}
327
328			/* free */
329	matty	25	void
330			xfree(void *mem)
331	matty	10	{
332			free(mem);
333			}
334
335	matty	30	/* report an error */
336	matty	25	void
337	matty	30	error(char *format, ...)
338			{
339			va_list ap;
340
341			fprintf(stderr, "ERROR: ");
342
343			va_start(ap, format);
344			vfprintf(stderr, format, ap);
345			va_end(ap);
346			}
347
348			/* report an unimplemented protocol feature */
349			void
350			unimpl(char *format, ...)
351			{
352			va_list ap;
353
354			fprintf(stderr, "NOT IMPLEMENTED: ");
355
356			va_start(ap, format);
357			vfprintf(stderr, format, ap);
358			va_end(ap);
359			}
360
361			/* produce a hex dump */
362			void
363	matty	25	hexdump(unsigned char *p, unsigned int len)
364	matty	10	{
365			unsigned char *line = p;
366			unsigned int thisline, offset = 0;
367			int i;
368
369			while (offset < len)
370			{
371	astrand	111	fprintf(stderr, "%04x ", offset);
372	matty	10	thisline = len - offset;
373			if (thisline > 16)
374			thisline = 16;
375
376			for (i = 0; i < thisline; i++)
377	astrand	111	fprintf(stderr, "%02x ", line[i]);
378	matty	10
379	matty	30	for (; i < 16; i++)
380	astrand	111	fprintf(stderr, " ");
381	matty	30
382	matty	10	for (i = 0; i < thisline; i++)
383	astrand	111	fprintf(stderr, "%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
384	matty	10
385	astrand	111	fprintf(stderr, "\n");
386	matty	10	offset += thisline;
387			line += thisline;
388			}
389			}
390	matthewc	39
391			int
392			load_licence(unsigned char **data)
393			{
394			char path[PATH_MAX];
395			char *home;
396			struct stat st;
397			int fd;
398
399			home = getenv("HOME");
400			if (home == NULL)
401			return -1;
402
403			STRNCPY(path, home, sizeof(path));
404	astrand	64	strncat(path, "/.rdesktop/licence", sizeof(path) - strlen(path) - 1);
405	matthewc	39
406			fd = open(path, O_RDONLY);
407			if (fd == -1)
408			return -1;
409
410			if (fstat(fd, &st))
411			return -1;
412
413			*data = xmalloc(st.st_size);
414			return read(fd, *data, st.st_size);
415			}
416
417			void
418			save_licence(unsigned char *data, int length)
419			{
420			char path[PATH_MAX];
421			char *home;
422			int fd;
423
424			home = getenv("HOME");
425			if (home == NULL)
426			return;
427
428			STRNCPY(path, home, sizeof(path));
429	astrand	64	strncat(path, "/.rdesktop", sizeof(path) - strlen(path) - 1);
430	matthewc	39	mkdir(path, 0700);
431
432	astrand	64	strncat(path, "/licence", sizeof(path) - strlen(path) - 1);
433	matthewc	39
434	astrand	64	fd = open(path, O_WRONLY \| O_CREAT \| O_TRUNC, 0600);
435	matthewc	39	if (fd == -1)
436			{
437			perror("open");
438			return;
439			}
440
441			write(fd, data, length);
442			close(fd);
443			}