trunk/rdesktop/rdesktop.c

/*
   rdesktop: A Remote Desktop Protocol client.
   Entrypoint and utility functions
   Copyright (C) Matthew Chapman 1999-2000
   
   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 <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 = 800;
int height = 600;
int keylayout = 0x409;
BOOL motion = False;
BOOL orders = True;
BOOL licence = True;

/* Display usage information */
static void usage(char *program)
{
        STATUS("Usage: %s [options] server\n", program);
        STATUS("   -u: user name\n");
        STATUS("   -n: client hostname\n");
        STATUS("   -w: desktop width\n");
        STATUS("   -h: desktop height\n");
        STATUS("   -k: keyboard layout (hex)\n");
        STATUS("   -m: send motion events\n");
        STATUS("   -b: force bitmap updates\n");
        STATUS("   -l: do not request licence\n\n");
}

/* Client program */
int main(int argc, char *argv[])
{
        struct passwd *pw;
        char *server;
        char title[32];
        int c;

        STATUS("rdesktop: A Remote Desktop Protocol client.\n");
        STATUS("Version "VERSION". Copyright (C) 1999-2000 Matt Chapman.\n");
        STATUS("See http://www.rdesktop.org/ for more information.\n\n");

        while ((c = getopt(argc, argv, "u:n:w:h:k:mbl?")) != -1)
        {
                switch (c)
                {
                        case 'u':
                                strncpy(username, optarg, sizeof(username));
                                break;

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

                        case 'w':
                                width = strtol(optarg, NULL, 10);
                                break;

                        case 'h':
                                height = strtol(optarg, NULL, 10);
                                break;

                        case 'k':
                                keylayout = strtol(optarg, NULL, 16);
                                break;

                        case 'm':
                                motion = True;
                                break;

                        case 'b':
                                orders = False;
                                break;

                        case 'l':
                                licence = False;
                                break;

                        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))
                {
                        STATUS("Could not determine user name.\n");
                        return 1;
                }

                strncpy(username, pw->pw_name, sizeof(username));
        }

        if (hostname[0] == 0)
        {
                if (gethostname(hostname, sizeof(hostname)) == -1)
                {
                        STATUS("Could not determine host name.\n");
                        return 1;
                }
        }

        if (!rdp_connect(server))
                return 1;

        STATUS("Connection successful.\n");

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

        if (ui_create_window(title))
        {
                rdp_main_loop();
                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;
        uint32 *r = (uint32 *)random;
        int fd;

        /* If we have a kernel random device, use it. */
        if ((fd = open("/dev/urandom", 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(NULL); /* 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);
}

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

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

                for (; i < 16; i++)
                        STATUS("   ");

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

                STATUS("\n");
                offset += thisline;
                line += thisline;
        }
}
1	/*
2	rdesktop: A Remote Desktop Protocol client.
3	Entrypoint and utility functions
4	Copyright (C) Matthew Chapman 1999-2000
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 <unistd.h> /* read close getuid getgid getpid getppid gethostname */
23	#include <fcntl.h> /* open */
24	#include <pwd.h> /* getpwuid */
25	#include <sys/stat.h> /* stat */
26	#include <sys/time.h> /* gettimeofday */
27	#include <sys/times.h> /* times */
28	#include "rdesktop.h"
29
30	char username[16];
31	char hostname[16];
32	int width = 800;
33	int height = 600;
34	int keylayout = 0x409;
35	BOOL motion = False;
36	BOOL orders = True;
37	BOOL licence = True;
38
39	/* Display usage information */
40	static void usage(char *program)
41	{
42	STATUS("Usage: %s [options] server\n", program);
43	STATUS(" -u: user name\n");
44	STATUS(" -n: client hostname\n");
45	STATUS(" -w: desktop width\n");
46	STATUS(" -h: desktop height\n");
47	STATUS(" -k: keyboard layout (hex)\n");
48	STATUS(" -m: send motion events\n");
49	STATUS(" -b: force bitmap updates\n");
50	STATUS(" -l: do not request licence\n\n");
51	}
52
53	/* Client program */
54	int main(int argc, char *argv[])
55	{
56	struct passwd *pw;
57	char *server;
58	char title[32];
59	int c;
60
61	STATUS("rdesktop: A Remote Desktop Protocol client.\n");
62	STATUS("Version "VERSION". Copyright (C) 1999-2000 Matt Chapman.\n");
63	STATUS("See http://www.rdesktop.org/ for more information.\n\n");
64
65	while ((c = getopt(argc, argv, "u:n:w:h:k:mbl?")) != -1)
66	{
67	switch (c)
68	{
69	case 'u':
70	strncpy(username, optarg, sizeof(username));
71	break;
72
73	case 'n':
74	strncpy(hostname, optarg, sizeof(hostname));
75	break;
76
77	case 'w':
78	width = strtol(optarg, NULL, 10);
79	break;
80
81	case 'h':
82	height = strtol(optarg, NULL, 10);
83	break;
84
85	case 'k':
86	keylayout = strtol(optarg, NULL, 16);
87	break;
88
89	case 'm':
90	motion = True;
91	break;
92
93	case 'b':
94	orders = False;
95	break;
96
97	case 'l':
98	licence = False;
99	break;
100
101	case '?':
102	default:
103	usage(argv[0]);
104	return 1;
105	}
106	}
107
108	if (argc - optind < 1)
109	{
110	usage(argv[0]);
111	return 1;
112	}
113
114	server = argv[optind];
115
116	if (username[0] == 0)
117	{
118	pw = getpwuid(getuid());
119	if ((pw == NULL) \|\| (pw->pw_name == NULL))
120	{
121	STATUS("Could not determine user name.\n");
122	return 1;
123	}
124
125	strncpy(username, pw->pw_name, sizeof(username));
126	}
127
128	if (hostname[0] == 0)
129	{
130	if (gethostname(hostname, sizeof(hostname)) == -1)
131	{
132	STATUS("Could not determine host name.\n");
133	return 1;
134	}
135	}
136
137	if (!rdp_connect(server))
138	return 1;
139
140	STATUS("Connection successful.\n");
141
142	strcpy(title, "rdesktop - ");
143	strncat(title, server, sizeof(title));
144
145	if (ui_create_window(title))
146	{
147	rdp_main_loop();
148	ui_destroy_window();
149	}
150
151	rdp_disconnect();
152	return 0;
153	}
154
155	/* Generate a 32-byte random for the secure transport code. */
156	void generate_random(uint8 *random)
157	{
158	struct stat st;
159	uint32 r = (uint32 )random;
160	int fd;
161
162	/* If we have a kernel random device, use it. */
163	if ((fd = open("/dev/urandom", O_RDONLY)) != -1)
164	{
165	read(fd, random, 32);
166	close(fd);
167	return;
168	}
169
170	/* Otherwise use whatever entropy we can gather - ideas welcome. */
171	r[0] = (getpid()) \| (getppid() << 16);
172	r[1] = (getuid()) \| (getgid() << 16);
173	r[2] = times(NULL); /* system uptime (clocks) */
174	gettimeofday((struct timeval )&r[3], NULL); / sec and usec */
175	stat("/tmp", &st);
176	r[5] = st.st_atime;
177	r[6] = st.st_mtime;
178	r[7] = st.st_ctime;
179	}
180
181	/* malloc; exit if out of memory */
182	void *xmalloc(int size)
183	{
184	void *mem = malloc(size);
185	if (mem == NULL)
186	{
187	ERROR("xmalloc %d\n", size);
188	exit(1);
189	}
190	return mem;
191	}
192
193	/* realloc; exit if out of memory */
194	void xrealloc(void oldmem, int size)
195	{
196	void *mem = realloc(oldmem, size);
197	if (mem == NULL)
198	{
199	ERROR("xrealloc %d\n", size);
200	exit(1);
201	}
202	return mem;
203	}
204
205	/* free */
206	void xfree(void *mem)
207	{
208	free(mem);
209	}
210
211	/* Produce a hex dump */
212	void hexdump(unsigned char *p, unsigned int len)
213	{
214	unsigned char *line = p;
215	unsigned int thisline, offset = 0;
216	int i;
217
218	while (offset < len)
219	{
220	STATUS("%04x ", offset);
221	thisline = len - offset;
222	if (thisline > 16)
223	thisline = 16;
224
225	for (i = 0; i < thisline; i++)
226	STATUS("%02x ", line[i])
227
228	for (; i < 16; i++)
229	STATUS(" ");
230
231	for (i = 0; i < thisline; i++)
232	STATUS("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
233
234	STATUS("\n");
235	offset += thisline;
236	line += thisline;
237	}
238	}