trunk/rdesktop/rdesktop.c

/*
   rdesktop: A Remote Desktop Protocol client.
   Entrypoint and utility functions
   Copyright (C) Matthew Chapman 1999-2002

   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 <stdarg.h>             /* va_list va_start va_end */
#include <unistd.h>             /* read close getuid getgid getpid getppid gethostname */
#include <fcntl.h>              /* open */
#include <errno.h>              /* save licence uses it. */
#include <pwd.h>                /* getpwuid */
#include <termios.h>            /* tcgetattr tcsetattr */
#include <sys/stat.h>           /* stat */
#include <sys/time.h>           /* gettimeofday */
#include <sys/times.h>          /* times */
#include "rdesktop.h"

#ifdef EGD_SOCKET
#include <sys/socket.h>         /* socket connect */
#include <sys/un.h>             /* sockaddr_un */
#endif

#ifdef WITH_OPENSSL
#include <openssl/md5.h>
#else
#include "crypto/md5.h"
#endif

char title[32] = "";
char username[16];
char hostname[16];
char keymapname[16];
int keylayout = 0x409;          /* Defaults to US keyboard layout */
int width = 800;                /* If width or height are reset to zero, the geometry will 
                                   be fetched from _NET_WORKAREA */
int height = 600;
int tcp_port_rdp = TCP_PORT_RDP;
BOOL bitmap_compression = True;
BOOL sendmotion = True;
BOOL orders = True;
BOOL encryption = True;
BOOL desktop_save = True;
BOOL fullscreen = False;
BOOL grab_keyboard = True;
BOOL hide_decorations = False;
extern BOOL owncolmap;

/* Display usage information */
static void
usage(char *program)
{
        fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
        fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2002 Matt Chapman.\n");
        fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");

        fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
        fprintf(stderr, "   -u: user name\n");
        fprintf(stderr, "   -d: domain\n");
        fprintf(stderr, "   -s: shell\n");
        fprintf(stderr, "   -c: working directory\n");
        fprintf(stderr, "   -p: password (- to prompt)\n");
        fprintf(stderr, "   -n: client hostname\n");
        fprintf(stderr, "   -k: keyboard layout on terminal server (us,sv,gr,etc.)\n");
        fprintf(stderr, "   -g: desktop geometry (WxH)\n");
        fprintf(stderr, "   -f: full-screen mode\n");
        fprintf(stderr, "   -b: force bitmap updates\n");
        fprintf(stderr, "   -e: disable encryption (French TS)\n");
        fprintf(stderr, "   -m: do not send motion events\n");
        fprintf(stderr, "   -C: use private colour map\n");
        fprintf(stderr, "   -K: keep window manager key bindings\n");
        fprintf(stderr, "   -T: window title\n");
        fprintf(stderr, "   -D: hide window manager decorations\n");
}

static BOOL
read_password(char *password, int size)
{
        struct termios tios;
        BOOL ret = False;
        int istty = 0;
        char *p;

        if (tcgetattr(STDIN_FILENO, &tios) == 0)
        {
                fprintf(stderr, "Password: ");
                tios.c_lflag &= ~ECHO;
                tcsetattr(STDIN_FILENO, TCSANOW, &tios);
                istty = 1;
        }

        if (fgets(password, size, stdin) != NULL)
        {
                ret = True;

                /* strip final newline */
                p = strchr(password, '\n');
                if (p != NULL)
                        *p = 0;
        }

        if (istty)
        {
                tios.c_lflag |= ECHO;
                tcsetattr(STDIN_FILENO, TCSANOW, &tios);
                fprintf(stderr, "\n");
        }

        return ret;
}

/* Client program */
int
main(int argc, char *argv[])
{
        char server[64];
        char fullhostname[64];
        char domain[16];
        char password[16];
        char shell[128];
        char directory[32];
        BOOL prompt_password;
        struct passwd *pw;
        uint32 flags;
        char *p;
        int c;
        int username_option = 0;

        flags = RDP_LOGON_NORMAL;
        prompt_password = False;
        domain[0] = password[0] = shell[0] = directory[0] = 0;
        strcpy(keymapname, "en-us");

        while ((c = getopt(argc, argv, "u:d:s:c:p:n:k:g:fbemCKT:Dh?")) != -1)
        {
                switch (c)
                {
                        case 'u':
                                STRNCPY(username, optarg, sizeof(username));
                                username_option = 1;
                                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':
                                if ((optarg[0] == '-') && (optarg[1] == 0))
                                {
                                        prompt_password = True;
                                        break;
                                }

                                STRNCPY(password, optarg, sizeof(password));
                                flags |= RDP_LOGON_AUTO;

                                /* try to overwrite argument so it won't appear in ps */
                                p = optarg;
                                while (*p)
                                        *(p++) = 'X';
                                break;

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

                        case 'k':
                                STRNCPY(keymapname, optarg, sizeof(keymapname));
                                break;

                        case 'g':
                                if (!strcmp(optarg, "workarea"))
                                {
                                        width = height = 0;
                                        break;
                                }

                                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 'C':
                                owncolmap = True;
                                break;

                        case 'K':
                                grab_keyboard = False;
                                break;

                        case 'T':
                                STRNCPY(title, optarg, sizeof(title));
                                break;

                        case 'D':
                                hide_decorations = True;
                                break;

                        case 'h':
                        case '?':
                        default:
                                usage(argv[0]);
                                return 1;
                }
        }

        if (argc - optind < 1)
        {
                usage(argv[0]);
                return 1;
        }

        STRNCPY(server, argv[optind], sizeof(server));
        p = strchr(server, ':');
        if (p != NULL)
        {
                tcp_port_rdp = strtol(p + 1, NULL, 10);
                *p = 0;
        }

        if (!username_option)
        {
                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 (prompt_password && read_password(password, sizeof(password)))
                flags |= RDP_LOGON_AUTO;

        if (title[0] == 0)
        {
                strcpy(title, "rdesktop - ");
                strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
        }

        if (!ui_init())
                return 1;

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

        DEBUG(("Connection successful.\n"));
        memset(password, 0, sizeof(password));

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

        DEBUG(("Disconnecting...\n"));
        rdp_disconnect();
        ui_deinit();
        return 0;
}

#ifdef EGD_SOCKET
/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
static BOOL
generate_random_egd(uint8 * buf)
{
        struct sockaddr_un addr;
        BOOL ret = False;
        int fd;

        fd = socket(AF_UNIX, SOCK_STREAM, 0);
        if (fd == -1)
                return False;

        addr.sun_family = AF_UNIX;
        memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
        if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
                goto err;

        /* PRNGD and EGD use a simple communications protocol */
        buf[0] = 1;             /* Non-blocking (similar to /dev/urandom) */
        buf[1] = 32;            /* Number of requested random bytes */
        if (write(fd, buf, 2) != 2)
                goto err;

        if ((read(fd, buf, 1) != 1) || (buf[0] == 0))   /* Available? */
                goto err;

        if (read(fd, buf, 32) != 32)
                goto err;

        ret = True;

      err:
        close(fd);
        return ret;
}
#endif

/* Generate a 32-byte random for the secure transport code. */
void
generate_random(uint8 * random)
{
        struct stat st;
        struct tms tmsbuf;
        MD5_CTX md5;
        uint32 *r;
        int fd, n;

        /* If we have a kernel random device, try that first */
        if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
            || ((fd = open("/dev/random", O_RDONLY)) != -1))
        {
                n = read(fd, random, 32);
                close(fd);
                if (n == 32)
                        return;
        }

#ifdef EGD_SOCKET
        /* As a second preference use an EGD */
        if (generate_random_egd(random))
                return;
#endif

        /* Otherwise use whatever entropy we can gather - ideas welcome. */
        r = (uint32 *) random;
        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;

        /* Hash both halves with MD5 to obscure possible patterns */
        MD5_Init(&md5);
        MD5_Update(&md5, random, 16);
        MD5_Final(random, &md5);
        MD5_Update(&md5, random + 16, 16);
        MD5_Final(random + 16, &md5);
}

/* 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;
        }
}

#ifdef SAVE_LICENCE
int
load_licence(unsigned char **data)
{
        char *path;
        char *home;
        struct stat st;
        int fd;

        home = getenv("HOME");
        if (home == NULL)
                return -1;

        path = xmalloc(strlen(home) + strlen(hostname) + 20);
        sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);

        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 *fpath;            /* file path for licence */
        char *fname, *fnamewrk; /* file name for licence .inkl path. */
        char *home;
        uint32 y;
        struct flock fnfl;
        int fnfd, fnwrkfd, i, wlen;
        struct stream s, *s_ptr;
        uint32 len;

        /* Construct a stream, so that we can use macros to extract the
         * licence.
         */
        s_ptr = &s;
        s_ptr->p = data;
        /* Skip first two bytes */
        in_uint16(s_ptr, len);

        /* Skip three strings */
        for (i = 0; i < 3; i++)
        {
                in_uint32(s_ptr, len);
                s_ptr->p += len;
                /* Make sure that we won't be past the end of data after
                 * reading the next length value
                 */
                if ((s_ptr->p) + 4 > data + length)
                {
                        printf("Error in parsing licence key.\n");
                        printf("Strings %d end value %x > supplied length (%x)\n",
                               i, s_ptr->p, data + length);
                        return;
                }
        }
        in_uint32(s_ptr, len);
        if (s_ptr->p + len > data + length)
        {
                printf("Error in parsing licence key.\n");
                printf("End of licence %x > supplied length (%x)\n", s_ptr->p + len, data + length);
                return;
        }

        home = getenv("HOME");
        if (home == NULL)
                return;

        /* set and create the directory -- if it doesn't exist. */
        fpath = xmalloc(strlen(home) + 11);
        STRNCPY(fpath, home, strlen(home) + 1);

        sprintf(fpath, "%s/.rdesktop", fpath);
        if (mkdir(fpath, 0700) == -1 && errno != EEXIST)
        {
                perror("mkdir");
                exit(1);
        }

        /* set the real licence filename, and put a write lock on it. */
        fname = xmalloc(strlen(fpath) + strlen(hostname) + 10);
        sprintf(fname, "%s/licence.%s", fpath, hostname);
        fnfd = open(fname, O_RDONLY);
        if (fnfd != -1)
        {
                fnfl.l_type = F_WRLCK;
                fnfl.l_whence = SEEK_SET;
                fnfl.l_start = 0;
                fnfl.l_len = 1;
                fcntl(fnfd, F_SETLK, &fnfl);
        }

        /* create a temporary licence file */
        fnamewrk = xmalloc(strlen(fname) + 12);
        for (y = 0;; y++)
        {
                sprintf(fnamewrk, "%s.%lu", fname, y);
                fnwrkfd = open(fnamewrk, O_WRONLY | O_CREAT | O_EXCL, 0600);
                if (fnwrkfd == -1)
                {
                        if (errno == EINTR || errno == EEXIST)
                                continue;
                        perror("create");
                        exit(1);
                }
                break;
        }
        /* write to the licence file */
        for (y = 0; y < len;)
        {
                do
                {
                        wlen = write(fnwrkfd, s_ptr->p + y, len - y);
                }
                while (wlen == -1 && errno == EINTR);
                if (wlen < 1)
                {
                        perror("write");
                        unlink(fnamewrk);
                        exit(1);
                }
                y += wlen;
        }

        /* close the file and rename it to fname */
        if (close(fnwrkfd) == -1)
        {
                perror("close");
                unlink(fnamewrk);
                exit(1);
        }
        if (rename(fnamewrk, fname) == -1)
        {
                perror("rename");
                unlink(fnamewrk);
                exit(1);
        }
        /* close the file lock on fname */
        if (fnfd != -1)
        {
                fnfl.l_type = F_UNLCK;
                fnfl.l_whence = SEEK_SET;
                fnfl.l_start = 0;
                fnfl.l_len = 1;
                fcntl(fnfd, F_SETLK, &fnfl);
                close(fnfd);
        }

}
#endif
1	matty	10	/*
2			rdesktop: A Remote Desktop Protocol client.
3			Entrypoint and utility functions
4	matthewc	122	Copyright (C) Matthew Chapman 1999-2002
5	jsorg71	100
6	matty	10	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	jsorg71	100
11	matty	10	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	jsorg71	100
16	matty	10	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	30	#include <stdarg.h> /* va_list va_start va_end */
22	matty	24	#include <unistd.h> /* read close getuid getgid getpid getppid gethostname */
23			#include <fcntl.h> /* open */
24	n-ki	280	#include <errno.h> /* save licence uses it. */
25	matty	24	#include <pwd.h> /* getpwuid */
26	matthewc	211	#include <termios.h> /* tcgetattr tcsetattr */
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	matthewc	220	#ifdef EGD_SOCKET
33			#include <sys/socket.h> /* socket connect */
34			#include <sys/un.h> /* sockaddr_un */
35			#endif
36
37			#ifdef WITH_OPENSSL
38			#include <openssl/md5.h>
39			#else
40			#include "crypto/md5.h"
41			#endif
42
43	astrand	107	char title[32] = "";
44	matty	10	char username[16];
45			char hostname[16];
46	matthewc	38	char keymapname[16];
47	astrand	66	int keylayout = 0x409; /* Defaults to US keyboard layout */
48	astrand	263	int width = 800; /* If width or height are reset to zero, the geometry will
49			be fetched from _NET_WORKAREA */
50	matthewc	160	int height = 600;
51	jsorg71	58	int tcp_port_rdp = TCP_PORT_RDP;
52	matty	28	BOOL bitmap_compression = True;
53	matty	29	BOOL sendmotion = True;
54	matty	10	BOOL orders = True;
55	matty	30	BOOL encryption = True;
56	matty	28	BOOL desktop_save = True;
57			BOOL fullscreen = False;
58	astrand	76	BOOL grab_keyboard = True;
59	astrand	262	BOOL hide_decorations = False;
60	n-ki	279	extern BOOL owncolmap;
61	matty	10
62			/* Display usage information */
63	matty	25	static void
64			usage(char *program)
65	matty	10	{
66	matthewc	122	fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
67			fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2002 Matt Chapman.\n");
68			fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
69
70	matthewc	222	fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
71	astrand	111	fprintf(stderr, " -u: user name\n");
72			fprintf(stderr, " -d: domain\n");
73			fprintf(stderr, " -s: shell\n");
74			fprintf(stderr, " -c: working directory\n");
75	matthewc	211	fprintf(stderr, " -p: password (- to prompt)\n");
76	astrand	111	fprintf(stderr, " -n: client hostname\n");
77	matthewc	223	fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr,etc.)\n");
78	astrand	111	fprintf(stderr, " -g: desktop geometry (WxH)\n");
79			fprintf(stderr, " -f: full-screen mode\n");
80			fprintf(stderr, " -b: force bitmap updates\n");
81			fprintf(stderr, " -e: disable encryption (French TS)\n");
82			fprintf(stderr, " -m: do not send motion events\n");
83	n-ki	279	fprintf(stderr, " -C: use private colour map\n");
84	astrand	111	fprintf(stderr, " -K: keep window manager key bindings\n");
85	matthewc	223	fprintf(stderr, " -T: window title\n");
86	astrand	262	fprintf(stderr, " -D: hide window manager decorations\n");
87	matty	10	}
88
89	matthewc	211	static BOOL
90			read_password(char *password, int size)
91			{
92			struct termios tios;
93			BOOL ret = False;
94			int istty = 0;
95			char *p;
96
97			if (tcgetattr(STDIN_FILENO, &tios) == 0)
98			{
99			fprintf(stderr, "Password: ");
100			tios.c_lflag &= ~ECHO;
101			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
102			istty = 1;
103			}
104
105			if (fgets(password, size, stdin) != NULL)
106			{
107			ret = True;
108
109			/* strip final newline */
110			p = strchr(password, '\n');
111			if (p != NULL)
112			*p = 0;
113			}
114
115			if (istty)
116			{
117			tios.c_lflag \|= ECHO;
118			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
119			fprintf(stderr, "\n");
120			}
121
122			return ret;
123			}
124
125	matty	10	/* Client program */
126	matty	25	int
127			main(int argc, char *argv[])
128	matty	10	{
129	matthewc	222	char server[64];
130	matty	30	char fullhostname[64];
131	matty	21	char domain[16];
132			char password[16];
133	astrand	238	char shell[128];
134	matty	21	char directory[32];
135	matthewc	211	BOOL prompt_password;
136	matty	30	struct passwd *pw;
137			uint32 flags;
138	matthewc	222	char *p;
139	matty	10	int c;
140	astrand	289	int username_option = 0;
141	matty	10
142	matty	21	flags = RDP_LOGON_NORMAL;
143	matthewc	211	prompt_password = False;
144	matty	21	domain[0] = password[0] = shell[0] = directory[0] = 0;
145	matthewc	240	strcpy(keymapname, "en-us");
146	matty	21
147	n-ki	279	while ((c = getopt(argc, argv, "u:d:s:c:p:n:k:g:fbemCKT:Dh?")) != -1)
148	matty	10	{
149			switch (c)
150			{
151			case 'u':
152	matty	30	STRNCPY(username, optarg, sizeof(username));
153	astrand	289	username_option = 1;
154	matty	10	break;
155
156	matty	21	case 'd':
157	matty	30	STRNCPY(domain, optarg, sizeof(domain));
158	matty	21	break;
159
160			case 's':
161	matty	30	STRNCPY(shell, optarg, sizeof(shell));
162	matty	21	break;
163
164			case 'c':
165	matty	30	STRNCPY(directory, optarg, sizeof(directory));
166	matty	21	break;
167
168	matty	30	case 'p':
169	matthewc	211	if ((optarg[0] == '-') && (optarg[1] == 0))
170			{
171			prompt_password = True;
172			break;
173			}
174
175	matty	30	STRNCPY(password, optarg, sizeof(password));
176			flags \|= RDP_LOGON_AUTO;
177	matthewc	211
178			/* try to overwrite argument so it won't appear in ps */
179	n-ki	171	p = optarg;
180			while (*p)
181			*(p++) = 'X';
182	matty	30	break;
183
184	matty	10	case 'n':
185	matty	30	STRNCPY(hostname, optarg, sizeof(hostname));
186	matty	10	break;
187
188			case 'k':
189	astrand	82	STRNCPY(keymapname, optarg, sizeof(keymapname));
190	matty	10	break;
191
192	matty	30	case 'g':
193	astrand	263	if (!strcmp(optarg, "workarea"))
194			{
195			width = height = 0;
196			break;
197			}
198
199	matty	30	width = strtol(optarg, &p, 10);
200			if (*p == 'x')
201	astrand	64	height = strtol(p + 1, NULL, 10);
202	matty	30
203			if ((width == 0) \|\| (height == 0))
204			{
205			error("invalid geometry\n");
206			return 1;
207			}
208	matty	10	break;
209
210	matty	30	case 'f':
211			fullscreen = True;
212			break;
213
214	matty	10	case 'b':
215			orders = False;
216			break;
217
218	matty	30	case 'e':
219			encryption = False;
220	matty	10	break;
221
222	matty	30	case 'm':
223			sendmotion = False;
224	matty	28	break;
225	matty	29
226	n-ki	279	case 'C':
227			owncolmap = True;
228			break;
229
230	astrand	76	case 'K':
231			grab_keyboard = False;
232			break;
233
234	matthewc	223	case 'T':
235	matthewc	222	STRNCPY(title, optarg, sizeof(title));
236	astrand	107	break;
237
238	astrand	262	case 'D':
239			hide_decorations = True;
240			break;
241
242	matty	28	case 'h':
243	matty	10	case '?':
244			default:
245			usage(argv[0]);
246			return 1;
247			}
248			}
249
250			if (argc - optind < 1)
251			{
252			usage(argv[0]);
253			return 1;
254			}
255
256	matthewc	222	STRNCPY(server, argv[optind], sizeof(server));
257			p = strchr(server, ':');
258			if (p != NULL)
259			{
260			tcp_port_rdp = strtol(p + 1, NULL, 10);
261			*p = 0;
262			}
263	matty	10
264	astrand	289	if (!username_option)
265	matty	10	{
266			pw = getpwuid(getuid());
267			if ((pw == NULL) \|\| (pw->pw_name == NULL))
268			{
269	matty	30	error("could not determine username, use -u\n");
270	matty	10	return 1;
271			}
272
273	matty	30	STRNCPY(username, pw->pw_name, sizeof(username));
274	matty	10	}
275
276			if (hostname[0] == 0)
277			{
278	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
279	matty	10	{
280	matty	30	error("could not determine local hostname, use -n\n");
281	matty	10	return 1;
282			}
283	matty	30
284			p = strchr(fullhostname, '.');
285			if (p != NULL)
286			*p = 0;
287
288			STRNCPY(hostname, fullhostname, sizeof(hostname));
289	matty	10	}
290
291	matthewc	211	if (prompt_password && read_password(password, sizeof(password)))
292			flags \|= RDP_LOGON_AUTO;
293	matty	30
294	matthewc	211	if (title[0] == 0)
295	astrand	107	{
296			strcpy(title, "rdesktop - ");
297			strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
298			}
299	matty	12
300	astrand	82	if (!ui_init())
301			return 1;
302	astrand	66
303	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
304			return 1;
305
306	matthewc	122	DEBUG(("Connection successful.\n"));
307	matthewc	211	memset(password, 0, sizeof(password));
308	matthewc	53
309	jsorg71	100	if (ui_create_window())
310	matty	10	{
311			rdp_main_loop();
312			ui_destroy_window();
313			}
314
315	matthewc	122	DEBUG(("Disconnecting...\n"));
316	matthewc	53	rdp_disconnect();
317	matthewc	188	ui_deinit();
318	matty	10	return 0;
319			}
320
321	matthewc	220	#ifdef EGD_SOCKET
322			/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
323			static BOOL
324			generate_random_egd(uint8 * buf)
325			{
326			struct sockaddr_un addr;
327			BOOL ret = False;
328			int fd;
329
330			fd = socket(AF_UNIX, SOCK_STREAM, 0);
331			if (fd == -1)
332			return False;
333
334			addr.sun_family = AF_UNIX;
335			memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
336	astrand	259	if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
337	matthewc	220	goto err;
338
339			/* PRNGD and EGD use a simple communications protocol */
340	astrand	259	buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
341			buf[1] = 32; /* Number of requested random bytes */
342	matthewc	220	if (write(fd, buf, 2) != 2)
343			goto err;
344
345	astrand	259	if ((read(fd, buf, 1) != 1) \|\| (buf[0] == 0)) /* Available? */
346	matthewc	220	goto err;
347
348			if (read(fd, buf, 32) != 32)
349			goto err;
350
351			ret = True;
352
353	astrand	259	err:
354	matthewc	220	close(fd);
355			return ret;
356			}
357			#endif
358
359	matty	10	/* Generate a 32-byte random for the secure transport code. */
360	matty	25	void
361	astrand	64	generate_random(uint8 * random)
362	matty	10	{
363			struct stat st;
364	matty	22	struct tms tmsbuf;
365	matthewc	220	MD5_CTX md5;
366			uint32 *r;
367			int fd, n;
368	matty	10
369	matthewc	220	/* If we have a kernel random device, try that first */
370	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
371			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
372	matty	10	{
373	matthewc	220	n = read(fd, random, 32);
374	matty	10	close(fd);
375	matthewc	220	if (n == 32)
376			return;
377	matty	10	}
378
379	matthewc	220	#ifdef EGD_SOCKET
380			/* As a second preference use an EGD */
381			if (generate_random_egd(random))
382			return;
383			#endif
384
385	matty	10	/* Otherwise use whatever entropy we can gather - ideas welcome. */
386	astrand	259	r = (uint32 *) random;
387	matty	10	r[0] = (getpid()) \| (getppid() << 16);
388			r[1] = (getuid()) \| (getgid() << 16);
389	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
390			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
391	matty	10	stat("/tmp", &st);
392			r[5] = st.st_atime;
393			r[6] = st.st_mtime;
394			r[7] = st.st_ctime;
395	matthewc	220
396			/* Hash both halves with MD5 to obscure possible patterns */
397			MD5_Init(&md5);
398	astrand	259	MD5_Update(&md5, random, 16);
399	matthewc	220	MD5_Final(random, &md5);
400	astrand	259	MD5_Update(&md5, random + 16, 16);
401			MD5_Final(random + 16, &md5);
402	matty	10	}
403
404			/* malloc; exit if out of memory */
405	matty	25	void *
406			xmalloc(int size)
407	matty	10	{
408			void *mem = malloc(size);
409			if (mem == NULL)
410			{
411	matty	30	error("xmalloc %d\n", size);
412	matty	10	exit(1);
413			}
414			return mem;
415			}
416
417			/* realloc; exit if out of memory */
418	matty	25	void *
419			xrealloc(void *oldmem, int size)
420	matty	10	{
421			void *mem = realloc(oldmem, size);
422			if (mem == NULL)
423			{
424	matty	30	error("xrealloc %d\n", size);
425	matty	10	exit(1);
426			}
427			return mem;
428			}
429
430			/* free */
431	matty	25	void
432			xfree(void *mem)
433	matty	10	{
434			free(mem);
435			}
436
437	matty	30	/* report an error */
438	matty	25	void
439	matty	30	error(char *format, ...)
440			{
441			va_list ap;
442
443			fprintf(stderr, "ERROR: ");
444
445			va_start(ap, format);
446			vfprintf(stderr, format, ap);
447			va_end(ap);
448			}
449
450			/* report an unimplemented protocol feature */
451			void
452			unimpl(char *format, ...)
453			{
454			va_list ap;
455
456			fprintf(stderr, "NOT IMPLEMENTED: ");
457
458			va_start(ap, format);
459			vfprintf(stderr, format, ap);
460			va_end(ap);
461			}
462
463			/* produce a hex dump */
464			void
465	matty	25	hexdump(unsigned char *p, unsigned int len)
466	matty	10	{
467			unsigned char *line = p;
468			unsigned int thisline, offset = 0;
469			int i;
470
471			while (offset < len)
472			{
473	matthewc	169	printf("%04x ", offset);
474	matty	10	thisline = len - offset;
475			if (thisline > 16)
476			thisline = 16;
477
478			for (i = 0; i < thisline; i++)
479	matthewc	169	printf("%02x ", line[i]);
480	matty	10
481	matty	30	for (; i < 16; i++)
482	matthewc	169	printf(" ");
483	matty	30
484	matty	10	for (i = 0; i < thisline; i++)
485	matthewc	169	printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
486	matty	10
487	matthewc	169	printf("\n");
488	matty	10	offset += thisline;
489			line += thisline;
490			}
491			}
492	matthewc	39
493	matthewc	159	#ifdef SAVE_LICENCE
494	matthewc	39	int
495			load_licence(unsigned char **data)
496			{
497	n-ki	280	char *path;
498	matthewc	39	char *home;
499			struct stat st;
500			int fd;
501
502			home = getenv("HOME");
503			if (home == NULL)
504			return -1;
505
506	n-ki	280	path = xmalloc(strlen(home) + strlen(hostname) + 20);
507			sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
508	matthewc	39
509			fd = open(path, O_RDONLY);
510			if (fd == -1)
511			return -1;
512
513			if (fstat(fd, &st))
514			return -1;
515
516			*data = xmalloc(st.st_size);
517			return read(fd, *data, st.st_size);
518			}
519
520			void
521			save_licence(unsigned char *data, int length)
522			{
523	n-ki	280	char fpath; / file path for licence */
524			char fname, fnamewrk; /* file name for licence .inkl path. */
525	matthewc	39	char *home;
526	n-ki	280	uint32 y;
527			struct flock fnfl;
528			int fnfd, fnwrkfd, i, wlen;
529			struct stream s, *s_ptr;
530			uint32 len;
531	matthewc	39
532	n-ki	280	/* Construct a stream, so that we can use macros to extract the
533			* licence.
534			*/
535			s_ptr = &s;
536			s_ptr->p = data;
537			/* Skip first two bytes */
538			in_uint16(s_ptr, len);
539
540			/* Skip three strings */
541			for (i = 0; i < 3; i++)
542			{
543			in_uint32(s_ptr, len);
544			s_ptr->p += len;
545			/* Make sure that we won't be past the end of data after
546			* reading the next length value
547			*/
548			if ((s_ptr->p) + 4 > data + length)
549			{
550			printf("Error in parsing licence key.\n");
551			printf("Strings %d end value %x > supplied length (%x)\n",
552			i, s_ptr->p, data + length);
553			return;
554			}
555			}
556			in_uint32(s_ptr, len);
557			if (s_ptr->p + len > data + length)
558			{
559			printf("Error in parsing licence key.\n");
560			printf("End of licence %x > supplied length (%x)\n", s_ptr->p + len, data + length);
561			return;
562			}
563
564	matthewc	39	home = getenv("HOME");
565			if (home == NULL)
566			return;
567
568	n-ki	280	/* set and create the directory -- if it doesn't exist. */
569			fpath = xmalloc(strlen(home) + 11);
570			STRNCPY(fpath, home, strlen(home) + 1);
571	matthewc	39
572	n-ki	280	sprintf(fpath, "%s/.rdesktop", fpath);
573			if (mkdir(fpath, 0700) == -1 && errno != EEXIST)
574			{
575			perror("mkdir");
576			exit(1);
577			}
578	matthewc	39
579	n-ki	280	/* set the real licence filename, and put a write lock on it. */
580			fname = xmalloc(strlen(fpath) + strlen(hostname) + 10);
581			sprintf(fname, "%s/licence.%s", fpath, hostname);
582			fnfd = open(fname, O_RDONLY);
583			if (fnfd != -1)
584	matthewc	39	{
585	n-ki	280	fnfl.l_type = F_WRLCK;
586			fnfl.l_whence = SEEK_SET;
587			fnfl.l_start = 0;
588			fnfl.l_len = 1;
589			fcntl(fnfd, F_SETLK, &fnfl);
590	matthewc	39	}
591
592	n-ki	280	/* create a temporary licence file */
593			fnamewrk = xmalloc(strlen(fname) + 12);
594			for (y = 0;; y++)
595			{
596			sprintf(fnamewrk, "%s.%lu", fname, y);
597			fnwrkfd = open(fnamewrk, O_WRONLY \| O_CREAT \| O_EXCL, 0600);
598			if (fnwrkfd == -1)
599			{
600			if (errno == EINTR \|\| errno == EEXIST)
601			continue;
602			perror("create");
603			exit(1);
604			}
605			break;
606			}
607			/* write to the licence file */
608			for (y = 0; y < len;)
609			{
610			do
611			{
612			wlen = write(fnwrkfd, s_ptr->p + y, len - y);
613			}
614			while (wlen == -1 && errno == EINTR);
615			if (wlen < 1)
616			{
617			perror("write");
618			unlink(fnamewrk);
619			exit(1);
620			}
621			y += wlen;
622			}
623
624			/* close the file and rename it to fname */
625			if (close(fnwrkfd) == -1)
626			{
627			perror("close");
628			unlink(fnamewrk);
629			exit(1);
630			}
631			if (rename(fnamewrk, fname) == -1)
632			{
633			perror("rename");
634			unlink(fnamewrk);
635			exit(1);
636			}
637			/* close the file lock on fname */
638			if (fnfd != -1)
639			{
640			fnfl.l_type = F_UNLCK;
641			fnfl.l_whence = SEEK_SET;
642			fnfl.l_start = 0;
643			fnfl.l_len = 1;
644			fcntl(fnfd, F_SETLK, &fnfl);
645			close(fnfd);
646			}
647
648	matthewc	39	}
649	matthewc	159	#endif