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 <sys/stat.h>           /* stat */
#include <sys/time.h>           /* gettimeofday */
#include <sys/times.h>          /* times */
#include "rdesktop.h"

char username[16];
char hostname[16];
int width;
int height;
int keylayout = 0x409;
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 (hex)\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\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;

        while ((c = getopt(argc, argv, "u:d:s:c:p:n:k:g: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':
                                keylayout = strtol(optarg, NULL, 16);
                                if (keylayout == 0)
                                {
                                        error("invalid keyboard layout\n");
                                        return 1;
                                }
                                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 '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 - "));

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

                printf("Connection successful.\n");
                rdp_main_loop();
                printf("Disconnecting...\n");
                ui_destroy_window();
        }

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