trunk/rdesktop/rdesktop.c

/*
   rdesktop: A Remote Desktop Protocol client.
   Entrypoint and utility functions
   Copyright (C) Matthew Chapman 1999-2001
   
   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 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;

/* Display usage information */
static void
usage(char *program)
{
        printf("Usage: %s [options] server\n", program);
        printf("   -u: user name\n");
        printf("   -d: domain\n");
        printf("   -s: shell\n");
        printf("   -c: working directory\n");
        printf("   -p: password (autologon)\n");
        printf("   -n: client hostname\n");
        printf("   -k: keyboard layout on terminal server (us,sv,gr etc.)\n");
        printf("   -g: desktop geometry (WxH)\n");
        printf("   -f: full-screen mode\n");
        printf("   -b: force bitmap updates\n");
        printf("   -e: disable encryption (French TS)\n");
        printf("   -m: do not send motion events\n");
        printf("   -l: do not request licence\n");
        printf("   -t: rdp tcp port\n\n");
}

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

        printf("rdesktop: A Remote Desktop Protocol client.\n");
        printf("Version " VERSION
               ". Copyright (C) 1999-2001 Matt Chapman.\n");
        printf("See http://www.rdesktop.org/ for more information.\n\n");

        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:n:k:g:t:fbemlh?")) != -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 '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 '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;
        }

        strcpy(title, "rdesktop - ");
        strncat(title, server, sizeof(title) - sizeof("rdesktop - "));

        xkeymap_init1();

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

        printf("Connection successful.\n");

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

        printf("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)
        {
                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 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	matty	30	Copyright (C) Matthew Chapman 1999-2001
5	matty	10
6			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
11			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
16			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			char username[16];
33			char hostname[16];
34	matthewc	38	char keymapname[16];
35	astrand	66	int keylayout = 0x409; /* Defaults to US keyboard layout */
36	matty	30	int width;
37			int height;
38	jsorg71	58	int tcp_port_rdp = TCP_PORT_RDP;
39	matty	28	BOOL bitmap_compression = True;
40	matty	29	BOOL sendmotion = True;
41	matty	10	BOOL orders = True;
42			BOOL licence = True;
43	matty	30	BOOL encryption = True;
44	matty	28	BOOL desktop_save = True;
45			BOOL fullscreen = False;
46	matty	10
47			/* Display usage information */
48	matty	25	static void
49			usage(char *program)
50	matty	10	{
51	matty	30	printf("Usage: %s [options] server\n", program);
52			printf(" -u: user name\n");
53			printf(" -d: domain\n");
54			printf(" -s: shell\n");
55			printf(" -c: working directory\n");
56			printf(" -p: password (autologon)\n");
57			printf(" -n: client hostname\n");
58	astrand	66	printf(" -k: keyboard layout on terminal server (us,sv,gr etc.)\n");
59	matty	30	printf(" -g: desktop geometry (WxH)\n");
60			printf(" -f: full-screen mode\n");
61			printf(" -b: force bitmap updates\n");
62			printf(" -e: disable encryption (French TS)\n");
63			printf(" -m: do not send motion events\n");
64	jsorg71	58	printf(" -l: do not request licence\n");
65			printf(" -t: rdp tcp port\n\n");
66	matty	10	}
67
68			/* Client program */
69	matty	25	int
70			main(int argc, char *argv[])
71	matty	10	{
72	matty	30	char fullhostname[64];
73	matty	21	char domain[16];
74			char password[16];
75			char shell[32];
76			char directory[32];
77	matty	10	char title[32];
78	matty	30	struct passwd *pw;
79			char server, p;
80			uint32 flags;
81	matty	10	int c;
82
83	matty	30	printf("rdesktop: A Remote Desktop Protocol client.\n");
84	astrand	64	printf("Version " VERSION
85			". Copyright (C) 1999-2001 Matt Chapman.\n");
86	matty	30	printf("See http://www.rdesktop.org/ for more information.\n\n");
87	matty	10
88	matty	21	flags = RDP_LOGON_NORMAL;
89			domain[0] = password[0] = shell[0] = directory[0] = 0;
90	matthewc	38	strcpy(keymapname, "us");
91	matty	21
92	jsorg71	58	while ((c = getopt(argc, argv, "u:d:s:c:p:n:k:g:t:fbemlh?")) != -1)
93	matty	10	{
94			switch (c)
95			{
96			case 'u':
97	matty	30	STRNCPY(username, optarg, sizeof(username));
98	matty	10	break;
99
100	matty	21	case 'd':
101	matty	30	STRNCPY(domain, optarg, sizeof(domain));
102	matty	21	break;
103
104			case 's':
105	matty	30	STRNCPY(shell, optarg, sizeof(shell));
106	matty	21	break;
107
108			case 'c':
109	matty	30	STRNCPY(directory, optarg, sizeof(directory));
110	matty	21	break;
111
112	matty	30	case 'p':
113			STRNCPY(password, optarg, sizeof(password));
114			flags \|= RDP_LOGON_AUTO;
115			break;
116
117	matty	10	case 'n':
118	matty	30	STRNCPY(hostname, optarg, sizeof(hostname));
119	matty	10	break;
120
121			case 'k':
122	astrand	64	STRNCPY(keymapname, optarg,
123			sizeof(keymapname));
124	matty	10	break;
125
126	matty	30	case 'g':
127			width = strtol(optarg, &p, 10);
128			if (*p == 'x')
129	astrand	64	height = strtol(p + 1, NULL, 10);
130	matty	30
131			if ((width == 0) \|\| (height == 0))
132			{
133			error("invalid geometry\n");
134			return 1;
135			}
136	matty	10	break;
137
138	matty	30	case 'f':
139			fullscreen = True;
140			break;
141
142	matty	10	case 'b':
143			orders = False;
144			break;
145
146	matty	30	case 'e':
147			encryption = False;
148	matty	10	break;
149
150	matty	30	case 'm':
151			sendmotion = False;
152	matty	28	break;
153	matty	29
154	matty	30	case 'l':
155			licence = False;
156	matty	28	break;
157	matty	29
158	jsorg71	58	case 't':
159			tcp_port_rdp = strtol(optarg, NULL, 10);
160			break;
161
162	matty	28	case 'h':
163	matty	10	case '?':
164			default:
165			usage(argv[0]);
166			return 1;
167			}
168			}
169
170			if (argc - optind < 1)
171			{
172			usage(argv[0]);
173			return 1;
174			}
175
176			server = argv[optind];
177
178			if (username[0] == 0)
179			{
180			pw = getpwuid(getuid());
181			if ((pw == NULL) \|\| (pw->pw_name == NULL))
182			{
183	matty	30	error("could not determine username, use -u\n");
184	matty	10	return 1;
185			}
186
187	matty	30	STRNCPY(username, pw->pw_name, sizeof(username));
188	matty	10	}
189
190			if (hostname[0] == 0)
191			{
192	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
193	matty	10	{
194	matty	30	error("could not determine local hostname, use -n\n");
195	matty	10	return 1;
196			}
197	matty	30
198			p = strchr(fullhostname, '.');
199			if (p != NULL)
200			*p = 0;
201
202			STRNCPY(hostname, fullhostname, sizeof(hostname));
203	matty	10	}
204
205	matty	30	if (!strcmp(password, "-"))
206			{
207			p = getpass("Password: ");
208			if (p == NULL)
209			{
210			error("failed to read password\n");
211			return 0;
212			}
213			STRNCPY(password, p, sizeof(password));
214			}
215
216			if ((width == 0) \|\| (height == 0))
217			{
218			width = 800;
219			height = 600;
220			}
221
222	matty	12	strcpy(title, "rdesktop - ");
223	matty	30	strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
224	matty	12
225	astrand	66	xkeymap_init1();
226
227	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
228			return 1;
229
230			printf("Connection successful.\n");
231
232	matty	10	if (ui_create_window(title))
233			{
234			rdp_main_loop();
235			ui_destroy_window();
236			}
237
238	matthewc	53	printf("Disconnecting...\n");
239			rdp_disconnect();
240	matty	10	return 0;
241			}
242
243			/* Generate a 32-byte random for the secure transport code. */
244	matty	25	void
245	astrand	64	generate_random(uint8 * random)
246	matty	10	{
247			struct stat st;
248	matty	22	struct tms tmsbuf;
249	matty	24	uint32 r = (uint32 ) random;
250	matty	10	int fd;
251
252			/* If we have a kernel random device, use it. */
253	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
254			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
255	matty	10	{
256			read(fd, random, 32);
257			close(fd);
258			return;
259			}
260
261			/* Otherwise use whatever entropy we can gather - ideas welcome. */
262			r[0] = (getpid()) \| (getppid() << 16);
263			r[1] = (getuid()) \| (getgid() << 16);
264	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
265			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
266	matty	10	stat("/tmp", &st);
267			r[5] = st.st_atime;
268			r[6] = st.st_mtime;
269			r[7] = st.st_ctime;
270			}
271
272			/* malloc; exit if out of memory */
273	matty	25	void *
274			xmalloc(int size)
275	matty	10	{
276			void *mem = malloc(size);
277			if (mem == NULL)
278			{
279	matty	30	error("xmalloc %d\n", size);
280	matty	10	exit(1);
281			}
282			return mem;
283			}
284
285			/* realloc; exit if out of memory */
286	matty	25	void *
287			xrealloc(void *oldmem, int size)
288	matty	10	{
289			void *mem = realloc(oldmem, size);
290			if (mem == NULL)
291			{
292	matty	30	error("xrealloc %d\n", size);
293	matty	10	exit(1);
294			}
295			return mem;
296			}
297
298			/* free */
299	matty	25	void
300			xfree(void *mem)
301	matty	10	{
302			free(mem);
303			}
304
305	matty	30	/* report an error */
306	matty	25	void
307	matty	30	error(char *format, ...)
308			{
309			va_list ap;
310
311			fprintf(stderr, "ERROR: ");
312
313			va_start(ap, format);
314			vfprintf(stderr, format, ap);
315			va_end(ap);
316			}
317
318			/* report an unimplemented protocol feature */
319			void
320			unimpl(char *format, ...)
321			{
322			va_list ap;
323
324			fprintf(stderr, "NOT IMPLEMENTED: ");
325
326			va_start(ap, format);
327			vfprintf(stderr, format, ap);
328			va_end(ap);
329			}
330
331			/* produce a hex dump */
332			void
333	matty	25	hexdump(unsigned char *p, unsigned int len)
334	matty	10	{
335			unsigned char *line = p;
336			unsigned int thisline, offset = 0;
337			int i;
338
339			while (offset < len)
340			{
341	matty	30	printf("%04x ", offset);
342	matty	10	thisline = len - offset;
343			if (thisline > 16)
344			thisline = 16;
345
346			for (i = 0; i < thisline; i++)
347	matty	30	printf("%02x ", line[i]);
348	matty	10
349	matty	30	for (; i < 16; i++)
350	astrand	64	printf(" ");
351	matty	30
352	matty	10	for (i = 0; i < thisline; i++)
353	matty	30	printf("%c",
354	matty	24	(line[i] >= 0x20
355			&& line[i] < 0x7f) ? line[i] : '.');
356	matty	10
357	matty	30	printf("\n");
358	matty	10	offset += thisline;
359			line += thisline;
360			}
361			}
362	matthewc	39
363			int
364			load_licence(unsigned char **data)
365			{
366			char path[PATH_MAX];
367			char *home;
368			struct stat st;
369			int fd;
370
371			home = getenv("HOME");
372			if (home == NULL)
373			return -1;
374
375			STRNCPY(path, home, sizeof(path));
376	astrand	64	strncat(path, "/.rdesktop/licence", sizeof(path) - strlen(path) - 1);
377	matthewc	39
378			fd = open(path, O_RDONLY);
379			if (fd == -1)
380			return -1;
381
382			if (fstat(fd, &st))
383			return -1;
384
385			*data = xmalloc(st.st_size);
386			return read(fd, *data, st.st_size);
387			}
388
389			void
390			save_licence(unsigned char *data, int length)
391			{
392			char path[PATH_MAX];
393			char *home;
394			int fd;
395
396			home = getenv("HOME");
397			if (home == NULL)
398			return;
399
400			STRNCPY(path, home, sizeof(path));
401	astrand	64	strncat(path, "/.rdesktop", sizeof(path) - strlen(path) - 1);
402	matthewc	39	mkdir(path, 0700);
403
404	astrand	64	strncat(path, "/licence", sizeof(path) - strlen(path) - 1);
405	matthewc	39
406	astrand	64	fd = open(path, O_WRONLY \| O_CREAT \| O_TRUNC, 0600);
407	matthewc	39	if (fd == -1)
408			{
409			perror("open");
410			return;
411			}
412
413			write(fd, data, length);
414			close(fd);
415			}