seamlessrdp-branch/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];
char keymapname[16];
int keylayout;
int width;
int height;
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\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;
        strcpy(keymapname, "us");

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