trunk/rdesktop/rdesktop.c

/*
   rdesktop: A Remote Desktop Protocol client.
   Entrypoint and utility functions
   Copyright (C) Matthew Chapman 1999-2003

   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;
int server_bpp = 8;
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) 1999-2003 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");
        fprintf(stderr, "   -a: server bpp\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:a: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 'a':
                                server_bpp = strtol(optarg, NULL, 10);
                                if (server_bpp != 8 && server_bpp != 16 && server_bpp != 15 && server_bpp != 24)
                                {
                                        error("invalid server bpp\n");
                                        return 1;
                                }
                                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 a warning */
void
warning(char *format, ...)
{
        va_list ap;

        fprintf(stderr, "WARNING: ");

        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	304	Copyright (C) Matthew Chapman 1999-2003
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	jsorg71	309	int width = 800; /* If width or height are reset to zero, the geometry will
49	astrand	263	be fetched from _NET_WORKAREA */
50	matthewc	160	int height = 600;
51	jsorg71	58	int tcp_port_rdp = TCP_PORT_RDP;
52	jsorg71	309	int server_bpp = 8;
53	matty	28	BOOL bitmap_compression = True;
54	matty	29	BOOL sendmotion = True;
55	matty	10	BOOL orders = True;
56	matty	30	BOOL encryption = True;
57	matty	28	BOOL desktop_save = True;
58			BOOL fullscreen = False;
59	astrand	76	BOOL grab_keyboard = True;
60	astrand	262	BOOL hide_decorations = False;
61	n-ki	279	extern BOOL owncolmap;
62	matty	10
63			/* Display usage information */
64	matty	25	static void
65			usage(char *program)
66	matty	10	{
67	matthewc	122	fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
68	matthewc	304	fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n");
69	matthewc	122	fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
70
71	matthewc	222	fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
72	astrand	111	fprintf(stderr, " -u: user name\n");
73			fprintf(stderr, " -d: domain\n");
74			fprintf(stderr, " -s: shell\n");
75			fprintf(stderr, " -c: working directory\n");
76	matthewc	211	fprintf(stderr, " -p: password (- to prompt)\n");
77	astrand	111	fprintf(stderr, " -n: client hostname\n");
78	matthewc	223	fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr,etc.)\n");
79	astrand	111	fprintf(stderr, " -g: desktop geometry (WxH)\n");
80			fprintf(stderr, " -f: full-screen mode\n");
81			fprintf(stderr, " -b: force bitmap updates\n");
82			fprintf(stderr, " -e: disable encryption (French TS)\n");
83			fprintf(stderr, " -m: do not send motion events\n");
84	n-ki	279	fprintf(stderr, " -C: use private colour map\n");
85	astrand	111	fprintf(stderr, " -K: keep window manager key bindings\n");
86	matthewc	223	fprintf(stderr, " -T: window title\n");
87	astrand	262	fprintf(stderr, " -D: hide window manager decorations\n");
88	jsorg71	309	fprintf(stderr, " -a: server bpp\n");
89	matty	10	}
90
91	matthewc	211	static BOOL
92			read_password(char *password, int size)
93			{
94			struct termios tios;
95			BOOL ret = False;
96			int istty = 0;
97			char *p;
98
99			if (tcgetattr(STDIN_FILENO, &tios) == 0)
100			{
101			fprintf(stderr, "Password: ");
102			tios.c_lflag &= ~ECHO;
103			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
104			istty = 1;
105			}
106
107			if (fgets(password, size, stdin) != NULL)
108			{
109			ret = True;
110
111			/* strip final newline */
112			p = strchr(password, '\n');
113			if (p != NULL)
114			*p = 0;
115			}
116
117			if (istty)
118			{
119			tios.c_lflag \|= ECHO;
120			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
121			fprintf(stderr, "\n");
122			}
123
124			return ret;
125			}
126
127	matty	10	/* Client program */
128	matty	25	int
129			main(int argc, char *argv[])
130	matty	10	{
131	matthewc	222	char server[64];
132	matty	30	char fullhostname[64];
133	matty	21	char domain[16];
134			char password[16];
135	astrand	238	char shell[128];
136	matty	21	char directory[32];
137	matthewc	211	BOOL prompt_password;
138	matty	30	struct passwd *pw;
139			uint32 flags;
140	matthewc	222	char *p;
141	matty	10	int c;
142	astrand	289	int username_option = 0;
143	matty	10
144	matty	21	flags = RDP_LOGON_NORMAL;
145	matthewc	211	prompt_password = False;
146	matty	21	domain[0] = password[0] = shell[0] = directory[0] = 0;
147	matthewc	240	strcpy(keymapname, "en-us");
148	matty	21
149	jsorg71	309	while ((c = getopt(argc, argv, "u:d:s:c:p:n:k:g:a:fbemCKT:Dh?")) != -1)
150	matty	10	{
151			switch (c)
152			{
153			case 'u':
154	matty	30	STRNCPY(username, optarg, sizeof(username));
155	astrand	289	username_option = 1;
156	matty	10	break;
157
158	matty	21	case 'd':
159	matty	30	STRNCPY(domain, optarg, sizeof(domain));
160	matty	21	break;
161
162			case 's':
163	matty	30	STRNCPY(shell, optarg, sizeof(shell));
164	matty	21	break;
165
166			case 'c':
167	matty	30	STRNCPY(directory, optarg, sizeof(directory));
168	matty	21	break;
169
170	matty	30	case 'p':
171	matthewc	211	if ((optarg[0] == '-') && (optarg[1] == 0))
172			{
173			prompt_password = True;
174			break;
175			}
176
177	matty	30	STRNCPY(password, optarg, sizeof(password));
178			flags \|= RDP_LOGON_AUTO;
179	matthewc	211
180			/* try to overwrite argument so it won't appear in ps */
181	n-ki	171	p = optarg;
182			while (*p)
183			*(p++) = 'X';
184	matty	30	break;
185
186	matty	10	case 'n':
187	matty	30	STRNCPY(hostname, optarg, sizeof(hostname));
188	matty	10	break;
189
190			case 'k':
191	astrand	82	STRNCPY(keymapname, optarg, sizeof(keymapname));
192	matty	10	break;
193
194	matty	30	case 'g':
195	astrand	263	if (!strcmp(optarg, "workarea"))
196			{
197			width = height = 0;
198			break;
199			}
200
201	matty	30	width = strtol(optarg, &p, 10);
202			if (*p == 'x')
203	astrand	64	height = strtol(p + 1, NULL, 10);
204	matty	30
205			if ((width == 0) \|\| (height == 0))
206			{
207			error("invalid geometry\n");
208			return 1;
209			}
210	matty	10	break;
211
212	matty	30	case 'f':
213			fullscreen = True;
214			break;
215
216	matty	10	case 'b':
217			orders = False;
218			break;
219
220	matty	30	case 'e':
221			encryption = False;
222	matty	10	break;
223
224	matty	30	case 'm':
225			sendmotion = False;
226	matty	28	break;
227	matty	29
228	n-ki	279	case 'C':
229			owncolmap = True;
230			break;
231
232	astrand	76	case 'K':
233			grab_keyboard = False;
234			break;
235
236	matthewc	223	case 'T':
237	matthewc	222	STRNCPY(title, optarg, sizeof(title));
238	astrand	107	break;
239
240	astrand	262	case 'D':
241			hide_decorations = True;
242			break;
243
244	jsorg71	309	case 'a':
245			server_bpp = strtol(optarg, NULL, 10);
246	jsorg71	315	if (server_bpp != 8 && server_bpp != 16 && server_bpp != 15 && server_bpp != 24)
247	jsorg71	309	{
248			error("invalid server bpp\n");
249			return 1;
250			}
251			break;
252
253	matty	28	case 'h':
254	matty	10	case '?':
255			default:
256			usage(argv[0]);
257			return 1;
258			}
259			}
260
261			if (argc - optind < 1)
262			{
263			usage(argv[0]);
264			return 1;
265			}
266
267	matthewc	222	STRNCPY(server, argv[optind], sizeof(server));
268			p = strchr(server, ':');
269			if (p != NULL)
270			{
271			tcp_port_rdp = strtol(p + 1, NULL, 10);
272			*p = 0;
273			}
274	matty	10
275	astrand	289	if (!username_option)
276	matty	10	{
277			pw = getpwuid(getuid());
278			if ((pw == NULL) \|\| (pw->pw_name == NULL))
279			{
280	matty	30	error("could not determine username, use -u\n");
281	matty	10	return 1;
282			}
283
284	matty	30	STRNCPY(username, pw->pw_name, sizeof(username));
285	matty	10	}
286
287			if (hostname[0] == 0)
288			{
289	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
290	matty	10	{
291	matty	30	error("could not determine local hostname, use -n\n");
292	matty	10	return 1;
293			}
294	matty	30
295			p = strchr(fullhostname, '.');
296			if (p != NULL)
297			*p = 0;
298
299			STRNCPY(hostname, fullhostname, sizeof(hostname));
300	matty	10	}
301
302	matthewc	211	if (prompt_password && read_password(password, sizeof(password)))
303			flags \|= RDP_LOGON_AUTO;
304	matty	30
305	matthewc	211	if (title[0] == 0)
306	astrand	107	{
307			strcpy(title, "rdesktop - ");
308			strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
309			}
310	matty	12
311	astrand	82	if (!ui_init())
312			return 1;
313	astrand	66
314	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
315			return 1;
316
317	matthewc	122	DEBUG(("Connection successful.\n"));
318	matthewc	211	memset(password, 0, sizeof(password));
319	matthewc	53
320	jsorg71	100	if (ui_create_window())
321	matty	10	{
322			rdp_main_loop();
323			ui_destroy_window();
324			}
325
326	matthewc	122	DEBUG(("Disconnecting...\n"));
327	matthewc	53	rdp_disconnect();
328	matthewc	188	ui_deinit();
329	matty	10	return 0;
330			}
331
332	matthewc	220	#ifdef EGD_SOCKET
333			/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
334			static BOOL
335			generate_random_egd(uint8 * buf)
336			{
337			struct sockaddr_un addr;
338			BOOL ret = False;
339			int fd;
340
341			fd = socket(AF_UNIX, SOCK_STREAM, 0);
342			if (fd == -1)
343			return False;
344
345			addr.sun_family = AF_UNIX;
346			memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
347	astrand	259	if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
348	matthewc	220	goto err;
349
350			/* PRNGD and EGD use a simple communications protocol */
351	astrand	259	buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
352			buf[1] = 32; /* Number of requested random bytes */
353	matthewc	220	if (write(fd, buf, 2) != 2)
354			goto err;
355
356	astrand	259	if ((read(fd, buf, 1) != 1) \|\| (buf[0] == 0)) /* Available? */
357	matthewc	220	goto err;
358
359			if (read(fd, buf, 32) != 32)
360			goto err;
361
362			ret = True;
363
364	astrand	259	err:
365	matthewc	220	close(fd);
366			return ret;
367			}
368			#endif
369
370	matty	10	/* Generate a 32-byte random for the secure transport code. */
371	matty	25	void
372	astrand	64	generate_random(uint8 * random)
373	matty	10	{
374			struct stat st;
375	matty	22	struct tms tmsbuf;
376	matthewc	220	MD5_CTX md5;
377			uint32 *r;
378			int fd, n;
379	matty	10
380	matthewc	220	/* If we have a kernel random device, try that first */
381	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
382			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
383	matty	10	{
384	matthewc	220	n = read(fd, random, 32);
385	matty	10	close(fd);
386	matthewc	220	if (n == 32)
387			return;
388	matty	10	}
389
390	matthewc	220	#ifdef EGD_SOCKET
391			/* As a second preference use an EGD */
392			if (generate_random_egd(random))
393			return;
394			#endif
395
396	matty	10	/* Otherwise use whatever entropy we can gather - ideas welcome. */
397	astrand	259	r = (uint32 *) random;
398	matty	10	r[0] = (getpid()) \| (getppid() << 16);
399			r[1] = (getuid()) \| (getgid() << 16);
400	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
401			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
402	matty	10	stat("/tmp", &st);
403			r[5] = st.st_atime;
404			r[6] = st.st_mtime;
405			r[7] = st.st_ctime;
406	matthewc	220
407			/* Hash both halves with MD5 to obscure possible patterns */
408			MD5_Init(&md5);
409	astrand	259	MD5_Update(&md5, random, 16);
410	matthewc	220	MD5_Final(random, &md5);
411	astrand	259	MD5_Update(&md5, random + 16, 16);
412			MD5_Final(random + 16, &md5);
413	matty	10	}
414
415			/* malloc; exit if out of memory */
416	matty	25	void *
417			xmalloc(int size)
418	matty	10	{
419			void *mem = malloc(size);
420			if (mem == NULL)
421			{
422	matty	30	error("xmalloc %d\n", size);
423	matty	10	exit(1);
424			}
425			return mem;
426			}
427
428			/* realloc; exit if out of memory */
429	matty	25	void *
430			xrealloc(void *oldmem, int size)
431	matty	10	{
432			void *mem = realloc(oldmem, size);
433			if (mem == NULL)
434			{
435	matty	30	error("xrealloc %d\n", size);
436	matty	10	exit(1);
437			}
438			return mem;
439			}
440
441			/* free */
442	matty	25	void
443			xfree(void *mem)
444	matty	10	{
445			free(mem);
446			}
447
448	matty	30	/* report an error */
449	matty	25	void
450	matty	30	error(char *format, ...)
451			{
452			va_list ap;
453
454			fprintf(stderr, "ERROR: ");
455
456			va_start(ap, format);
457			vfprintf(stderr, format, ap);
458			va_end(ap);
459			}
460
461	matthewc	297	/* report a warning */
462			void
463			warning(char *format, ...)
464			{
465			va_list ap;
466
467			fprintf(stderr, "WARNING: ");
468
469			va_start(ap, format);
470			vfprintf(stderr, format, ap);
471			va_end(ap);
472			}
473
474	matty	30	/* report an unimplemented protocol feature */
475			void
476			unimpl(char *format, ...)
477			{
478			va_list ap;
479
480			fprintf(stderr, "NOT IMPLEMENTED: ");
481
482			va_start(ap, format);
483			vfprintf(stderr, format, ap);
484			va_end(ap);
485			}
486
487			/* produce a hex dump */
488			void
489	matty	25	hexdump(unsigned char *p, unsigned int len)
490	matty	10	{
491			unsigned char *line = p;
492			unsigned int thisline, offset = 0;
493			int i;
494
495			while (offset < len)
496			{
497	matthewc	169	printf("%04x ", offset);
498	matty	10	thisline = len - offset;
499			if (thisline > 16)
500			thisline = 16;
501
502			for (i = 0; i < thisline; i++)
503	matthewc	169	printf("%02x ", line[i]);
504	matty	10
505	matty	30	for (; i < 16; i++)
506	matthewc	169	printf(" ");
507	matty	30
508	matty	10	for (i = 0; i < thisline; i++)
509	matthewc	169	printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
510	matty	10
511	matthewc	169	printf("\n");
512	matty	10	offset += thisline;
513			line += thisline;
514			}
515			}
516	matthewc	39
517	matthewc	159	#ifdef SAVE_LICENCE
518	matthewc	39	int
519			load_licence(unsigned char **data)
520			{
521	n-ki	280	char *path;
522	matthewc	39	char *home;
523			struct stat st;
524			int fd;
525
526			home = getenv("HOME");
527			if (home == NULL)
528			return -1;
529
530	n-ki	280	path = xmalloc(strlen(home) + strlen(hostname) + 20);
531			sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
532	matthewc	39
533			fd = open(path, O_RDONLY);
534			if (fd == -1)
535			return -1;
536
537			if (fstat(fd, &st))
538			return -1;
539
540			*data = xmalloc(st.st_size);
541			return read(fd, *data, st.st_size);
542			}
543
544			void
545			save_licence(unsigned char *data, int length)
546			{
547	n-ki	280	char fpath; / file path for licence */
548			char fname, fnamewrk; /* file name for licence .inkl path. */
549	matthewc	39	char *home;
550	n-ki	280	uint32 y;
551			struct flock fnfl;
552			int fnfd, fnwrkfd, i, wlen;
553			struct stream s, *s_ptr;
554			uint32 len;
555	matthewc	39
556	n-ki	280	/* Construct a stream, so that we can use macros to extract the
557			* licence.
558			*/
559			s_ptr = &s;
560			s_ptr->p = data;
561			/* Skip first two bytes */
562			in_uint16(s_ptr, len);
563
564			/* Skip three strings */
565			for (i = 0; i < 3; i++)
566			{
567			in_uint32(s_ptr, len);
568			s_ptr->p += len;
569			/* Make sure that we won't be past the end of data after
570			* reading the next length value
571			*/
572			if ((s_ptr->p) + 4 > data + length)
573			{
574			printf("Error in parsing licence key.\n");
575			printf("Strings %d end value %x > supplied length (%x)\n",
576			i, s_ptr->p, data + length);
577			return;
578			}
579			}
580			in_uint32(s_ptr, len);
581			if (s_ptr->p + len > data + length)
582			{
583			printf("Error in parsing licence key.\n");
584			printf("End of licence %x > supplied length (%x)\n", s_ptr->p + len, data + length);
585			return;
586			}
587
588	matthewc	39	home = getenv("HOME");
589			if (home == NULL)
590			return;
591
592	n-ki	280	/* set and create the directory -- if it doesn't exist. */
593			fpath = xmalloc(strlen(home) + 11);
594			STRNCPY(fpath, home, strlen(home) + 1);
595	matthewc	39
596	n-ki	280	sprintf(fpath, "%s/.rdesktop", fpath);
597			if (mkdir(fpath, 0700) == -1 && errno != EEXIST)
598			{
599			perror("mkdir");
600			exit(1);
601			}
602	matthewc	39
603	n-ki	280	/* set the real licence filename, and put a write lock on it. */
604			fname = xmalloc(strlen(fpath) + strlen(hostname) + 10);
605			sprintf(fname, "%s/licence.%s", fpath, hostname);
606			fnfd = open(fname, O_RDONLY);
607			if (fnfd != -1)
608	matthewc	39	{
609	n-ki	280	fnfl.l_type = F_WRLCK;
610			fnfl.l_whence = SEEK_SET;
611			fnfl.l_start = 0;
612			fnfl.l_len = 1;
613			fcntl(fnfd, F_SETLK, &fnfl);
614	matthewc	39	}
615
616	n-ki	280	/* create a temporary licence file */
617			fnamewrk = xmalloc(strlen(fname) + 12);
618			for (y = 0;; y++)
619			{
620			sprintf(fnamewrk, "%s.%lu", fname, y);
621			fnwrkfd = open(fnamewrk, O_WRONLY \| O_CREAT \| O_EXCL, 0600);
622			if (fnwrkfd == -1)
623			{
624			if (errno == EINTR \|\| errno == EEXIST)
625			continue;
626			perror("create");
627			exit(1);
628			}
629			break;
630			}
631			/* write to the licence file */
632			for (y = 0; y < len;)
633			{
634			do
635			{
636			wlen = write(fnwrkfd, s_ptr->p + y, len - y);
637			}
638			while (wlen == -1 && errno == EINTR);
639			if (wlen < 1)
640			{
641			perror("write");
642			unlink(fnamewrk);
643			exit(1);
644			}
645			y += wlen;
646			}
647
648			/* close the file and rename it to fname */
649			if (close(fnwrkfd) == -1)
650			{
651			perror("close");
652			unlink(fnamewrk);
653			exit(1);
654			}
655			if (rename(fnamewrk, fname) == -1)
656			{
657			perror("rename");
658			unlink(fnamewrk);
659			exit(1);
660			}
661			/* close the file lock on fname */
662			if (fnfd != -1)
663			{
664			fnfl.l_type = F_UNLCK;
665			fnfl.l_whence = SEEK_SET;
666			fnfl.l_start = 0;
667			fnfl.l_len = 1;
668			fcntl(fnfd, F_SETLK, &fnfl);
669			close(fnfd);
670			}
671
672	matthewc	39	}
673	matthewc	159	#endif