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 <getopt.h>     /* getopt */
#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\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");

        snprintf(title, sizeof(title), "rdesktop - %s", server);
        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	matty	10	/*
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 <getopt.h> /* getopt */
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 = 800;
34			int height = 600;
35			int keylayout = 0x409;
36			BOOL motion = False;
37			BOOL orders = True;
38			BOOL licence = True;
39
40			/* Display usage information */
41			static void usage(char *program)
42			{
43			STATUS("Usage: %s [options] server\n", program);
44			STATUS(" -u: user name\n");
45			STATUS(" -n: client hostname\n");
46			STATUS(" -w: desktop width\n");
47			STATUS(" -h: desktop height\n");
48			STATUS(" -k: keyboard layout (hex)\n");
49			STATUS(" -m: send motion events\n");
50			STATUS(" -b: force bitmap updates\n");
51			STATUS(" -l: do not request licence\n\n");
52			}
53
54			/* Client program */
55			int main(int argc, char *argv[])
56			{
57			struct passwd *pw;
58			char *server;
59			char title[32];
60			int c;
61
62			STATUS("rdesktop: A Remote Desktop Protocol client.\n");
63			STATUS("Version "VERSION". Copyright (C) 1999-2000 Matt Chapman.\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			snprintf(title, sizeof(title), "rdesktop - %s", server);
143			if (ui_create_window(title))
144			{
145			rdp_main_loop();
146			ui_destroy_window();
147			}
148
149			rdp_disconnect();
150			return 0;
151			}
152
153			/* Generate a 32-byte random for the secure transport code. */
154			void generate_random(uint8 *random)
155			{
156			struct stat st;
157			uint32 r = (uint32 )random;
158			int fd;
159
160			/* If we have a kernel random device, use it. */
161			if ((fd = open("/dev/urandom", O_RDONLY)) != -1)
162			{
163			read(fd, random, 32);
164			close(fd);
165			return;
166			}
167
168			/* Otherwise use whatever entropy we can gather - ideas welcome. */
169			r[0] = (getpid()) \| (getppid() << 16);
170			r[1] = (getuid()) \| (getgid() << 16);
171			r[2] = times(NULL); /* system uptime (clocks) */
172			gettimeofday((struct timeval )&r[3], NULL); / sec and usec */
173			stat("/tmp", &st);
174			r[5] = st.st_atime;
175			r[6] = st.st_mtime;
176			r[7] = st.st_ctime;
177			}
178
179			/* malloc; exit if out of memory */
180			void *xmalloc(int size)
181			{
182			void *mem = malloc(size);
183			if (mem == NULL)
184			{
185			ERROR("xmalloc %d\n", size);
186			exit(1);
187			}
188			return mem;
189			}
190
191			/* realloc; exit if out of memory */
192			void xrealloc(void oldmem, int size)
193			{
194			void *mem = realloc(oldmem, size);
195			if (mem == NULL)
196			{
197			ERROR("xrealloc %d\n", size);
198			exit(1);
199			}
200			return mem;
201			}
202
203			/* free */
204			void xfree(void *mem)
205			{
206			free(mem);
207			}
208
209			/* Produce a hex dump */
210			void hexdump(unsigned char *p, unsigned int len)
211			{
212			unsigned char *line = p;
213			unsigned int thisline, offset = 0;
214			int i;
215
216			while (offset < len)
217			{
218			STATUS("%04x ", offset);
219			thisline = len - offset;
220			if (thisline > 16)
221			thisline = 16;
222
223			for (i = 0; i < thisline; i++)
224			STATUS("%02x ", line[i])
225
226			for (; i < 16; i++)
227			STATUS(" ");
228
229			for (i = 0; i < thisline; i++)
230			STATUS("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
231
232			STATUS("\n");
233			offset += thisline;
234			line += thisline;
235			}
236			}