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 <pwd.h>                /* getpwuid */
#include <termios.h>            /* tcgetattr tcsetattr */
#include <sys/stat.h>           /* stat */
#include <sys/time.h>           /* gettimeofday */
#include <sys/times.h>          /* times */
#include <errno.h>
#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;
int win_button_size = 0;        /* If zero, disable single app mode */
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;

#ifdef RDP2VNC
extern int rfb_port;
extern int defer_time;
void
rdp2vnc_connect(char *server, uint32 flags, char *domain, char *password,
                char *shell, char *directory);
#endif
/* 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);
#ifdef RDP2VNC
        fprintf(stderr, "   -V: vnc port\n");
        fprintf(stderr, "   -E: defer time (ms)\n");
#endif
        fprintf(stderr, "   -u: user name\n");
        fprintf(stderr, "   -d: domain\n");
        fprintf(stderr, "   -s: shell\n");
        fprintf(stderr, "   -S: caption button size (single application mode)\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");

#ifdef RDP2VNC
#define VNCOPT "V:E:"
#else
#define VNCOPT
#endif

        while ((c = getopt(argc, argv, VNCOPT "u:d:s:S:c:p:n:k:g:a:fbemCKT:Dh?")) != -1)
        {
                switch (c)
                {
#ifdef RDP2VNC
                        case 'V':
                                rfb_port = strtol(optarg, NULL, 10);
                                if (rfb_port < 100)
                                        rfb_port += 5900;
                                break;

                        case 'E':
                                defer_time = strtol(optarg, NULL, 10);
                                if (defer_time < 0)
                                        defer_time = 0;
                                break;
#endif

                        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 'S':
                                if (!strcmp(optarg, "standard"))
                                {
                                        win_button_size = 18;
                                        break;
                                }

                                win_button_size = strtol(optarg, &p, 10);

                                if (*p)
                                {
                                        error("invalid button size\n");
                                        return 1;
                                }

                                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 - "));
        }

#ifdef RDP2VNC
        rdp2vnc_connect(server, flags, domain, password, shell, directory);
#else

        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();

#endif

        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;
        }
}


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,
                               (unsigned int) s_ptr->p, (unsigned int) 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",
                       (unsigned int) s_ptr->p + len, (unsigned int) 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, (long unsigned int) 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);
        }

}
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			#include <pwd.h> /* getpwuid */
25	matthewc	211	#include <termios.h> /* tcgetattr tcsetattr */
26	matty	24	#include <sys/stat.h> /* stat */
27			#include <sys/time.h> /* gettimeofday */
28			#include <sys/times.h> /* times */
29	astrand	325	#include <errno.h>
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	astrand	328	int win_button_size = 0; /* If zero, disable single app mode */
54	matty	28	BOOL bitmap_compression = True;
55	matty	29	BOOL sendmotion = True;
56	matty	10	BOOL orders = True;
57	matty	30	BOOL encryption = True;
58	matty	28	BOOL desktop_save = True;
59			BOOL fullscreen = False;
60	astrand	76	BOOL grab_keyboard = True;
61	astrand	262	BOOL hide_decorations = False;
62	n-ki	279	extern BOOL owncolmap;
63	matty	10
64	astrand	333	#ifdef RDP2VNC
65			extern int rfb_port;
66			extern int defer_time;
67			void
68			rdp2vnc_connect(char server, uint32 flags, char domain, char *password,
69			char shell, char directory);
70			#endif
71	matty	10	/* Display usage information */
72	matty	25	static void
73			usage(char *program)
74	matty	10	{
75	matthewc	122	fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
76	matthewc	304	fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2003 Matt Chapman.\n");
77	matthewc	122	fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
78
79	matthewc	222	fprintf(stderr, "Usage: %s [options] server[:port]\n", program);
80	astrand	333	#ifdef RDP2VNC
81			fprintf(stderr, " -V: vnc port\n");
82			fprintf(stderr, " -E: defer time (ms)\n");
83			#endif
84	astrand	111	fprintf(stderr, " -u: user name\n");
85			fprintf(stderr, " -d: domain\n");
86			fprintf(stderr, " -s: shell\n");
87	astrand	329	fprintf(stderr, " -S: caption button size (single application mode)\n");
88	astrand	111	fprintf(stderr, " -c: working directory\n");
89	matthewc	211	fprintf(stderr, " -p: password (- to prompt)\n");
90	astrand	111	fprintf(stderr, " -n: client hostname\n");
91	matthewc	223	fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr,etc.)\n");
92	astrand	111	fprintf(stderr, " -g: desktop geometry (WxH)\n");
93			fprintf(stderr, " -f: full-screen mode\n");
94			fprintf(stderr, " -b: force bitmap updates\n");
95			fprintf(stderr, " -e: disable encryption (French TS)\n");
96			fprintf(stderr, " -m: do not send motion events\n");
97	n-ki	279	fprintf(stderr, " -C: use private colour map\n");
98	astrand	111	fprintf(stderr, " -K: keep window manager key bindings\n");
99	matthewc	223	fprintf(stderr, " -T: window title\n");
100	astrand	262	fprintf(stderr, " -D: hide window manager decorations\n");
101	jsorg71	309	fprintf(stderr, " -a: server bpp\n");
102	matty	10	}
103
104	matthewc	211	static BOOL
105			read_password(char *password, int size)
106			{
107			struct termios tios;
108			BOOL ret = False;
109			int istty = 0;
110			char *p;
111
112			if (tcgetattr(STDIN_FILENO, &tios) == 0)
113			{
114			fprintf(stderr, "Password: ");
115			tios.c_lflag &= ~ECHO;
116			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
117			istty = 1;
118			}
119
120			if (fgets(password, size, stdin) != NULL)
121			{
122			ret = True;
123
124			/* strip final newline */
125			p = strchr(password, '\n');
126			if (p != NULL)
127			*p = 0;
128			}
129
130			if (istty)
131			{
132			tios.c_lflag \|= ECHO;
133			tcsetattr(STDIN_FILENO, TCSANOW, &tios);
134			fprintf(stderr, "\n");
135			}
136
137			return ret;
138			}
139
140	matty	10	/* Client program */
141	matty	25	int
142			main(int argc, char *argv[])
143	matty	10	{
144	matthewc	222	char server[64];
145	matty	30	char fullhostname[64];
146	matty	21	char domain[16];
147			char password[16];
148	astrand	238	char shell[128];
149	matty	21	char directory[32];
150	matthewc	211	BOOL prompt_password;
151	matty	30	struct passwd *pw;
152			uint32 flags;
153	matthewc	222	char *p;
154	matty	10	int c;
155	astrand	289	int username_option = 0;
156	matty	10
157	matty	21	flags = RDP_LOGON_NORMAL;
158	matthewc	211	prompt_password = False;
159	matty	21	domain[0] = password[0] = shell[0] = directory[0] = 0;
160	matthewc	240	strcpy(keymapname, "en-us");
161	matty	21
162	astrand	333	#ifdef RDP2VNC
163			#define VNCOPT "V:E:"
164			#else
165			#define VNCOPT
166			#endif
167
168			while ((c = getopt(argc, argv, VNCOPT "u:d:s:S:c:p:n:k:g:a:fbemCKT:Dh?")) != -1)
169	matty	10	{
170			switch (c)
171			{
172	astrand	333	#ifdef RDP2VNC
173			case 'V':
174			rfb_port = strtol(optarg, NULL, 10);
175			if (rfb_port < 100)
176			rfb_port += 5900;
177			break;
178
179			case 'E':
180			defer_time = strtol(optarg, NULL, 10);
181			if (defer_time < 0)
182			defer_time = 0;
183			break;
184			#endif
185
186	matty	10	case 'u':
187	matty	30	STRNCPY(username, optarg, sizeof(username));
188	astrand	289	username_option = 1;
189	matty	10	break;
190
191	matty	21	case 'd':
192	matty	30	STRNCPY(domain, optarg, sizeof(domain));
193	matty	21	break;
194
195			case 's':
196	matty	30	STRNCPY(shell, optarg, sizeof(shell));
197	matty	21	break;
198
199	astrand	328	case 'S':
200			if (!strcmp(optarg, "standard"))
201			{
202			win_button_size = 18;
203			break;
204			}
205
206			win_button_size = strtol(optarg, &p, 10);
207
208			if (*p)
209			{
210			error("invalid button size\n");
211			return 1;
212			}
213
214			break;
215
216	matty	21	case 'c':
217	matty	30	STRNCPY(directory, optarg, sizeof(directory));
218	matty	21	break;
219
220	matty	30	case 'p':
221	matthewc	211	if ((optarg[0] == '-') && (optarg[1] == 0))
222			{
223			prompt_password = True;
224			break;
225			}
226
227	matty	30	STRNCPY(password, optarg, sizeof(password));
228			flags \|= RDP_LOGON_AUTO;
229	matthewc	211
230			/* try to overwrite argument so it won't appear in ps */
231	n-ki	171	p = optarg;
232			while (*p)
233			*(p++) = 'X';
234	matty	30	break;
235
236	matty	10	case 'n':
237	matty	30	STRNCPY(hostname, optarg, sizeof(hostname));
238	matty	10	break;
239
240			case 'k':
241	astrand	82	STRNCPY(keymapname, optarg, sizeof(keymapname));
242	matty	10	break;
243
244	matty	30	case 'g':
245	astrand	263	if (!strcmp(optarg, "workarea"))
246			{
247			width = height = 0;
248			break;
249			}
250
251	matty	30	width = strtol(optarg, &p, 10);
252			if (*p == 'x')
253	astrand	64	height = strtol(p + 1, NULL, 10);
254	matty	30
255			if ((width == 0) \|\| (height == 0))
256			{
257			error("invalid geometry\n");
258			return 1;
259			}
260	matty	10	break;
261
262	matty	30	case 'f':
263			fullscreen = True;
264			break;
265
266	matty	10	case 'b':
267			orders = False;
268			break;
269
270	matty	30	case 'e':
271			encryption = False;
272	matty	10	break;
273
274	matty	30	case 'm':
275			sendmotion = False;
276	matty	28	break;
277	matty	29
278	n-ki	279	case 'C':
279			owncolmap = True;
280			break;
281
282	astrand	76	case 'K':
283			grab_keyboard = False;
284			break;
285
286	matthewc	223	case 'T':
287	matthewc	222	STRNCPY(title, optarg, sizeof(title));
288	astrand	107	break;
289
290	astrand	262	case 'D':
291			hide_decorations = True;
292			break;
293
294	jsorg71	309	case 'a':
295			server_bpp = strtol(optarg, NULL, 10);
296	astrand	318	if (server_bpp != 8 && server_bpp != 16 && server_bpp != 15
297			&& server_bpp != 24)
298	jsorg71	309	{
299			error("invalid server bpp\n");
300			return 1;
301			}
302			break;
303
304	matty	28	case 'h':
305	matty	10	case '?':
306			default:
307			usage(argv[0]);
308			return 1;
309			}
310			}
311
312			if (argc - optind < 1)
313			{
314			usage(argv[0]);
315			return 1;
316			}
317
318	matthewc	222	STRNCPY(server, argv[optind], sizeof(server));
319			p = strchr(server, ':');
320			if (p != NULL)
321			{
322			tcp_port_rdp = strtol(p + 1, NULL, 10);
323			*p = 0;
324			}
325	matty	10
326	astrand	289	if (!username_option)
327	matty	10	{
328			pw = getpwuid(getuid());
329			if ((pw == NULL) \|\| (pw->pw_name == NULL))
330			{
331	matty	30	error("could not determine username, use -u\n");
332	matty	10	return 1;
333			}
334
335	matty	30	STRNCPY(username, pw->pw_name, sizeof(username));
336	matty	10	}
337
338			if (hostname[0] == 0)
339			{
340	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
341	matty	10	{
342	matty	30	error("could not determine local hostname, use -n\n");
343	matty	10	return 1;
344			}
345	matty	30
346			p = strchr(fullhostname, '.');
347			if (p != NULL)
348			*p = 0;
349
350			STRNCPY(hostname, fullhostname, sizeof(hostname));
351	matty	10	}
352
353	matthewc	211	if (prompt_password && read_password(password, sizeof(password)))
354			flags \|= RDP_LOGON_AUTO;
355	matty	30
356	matthewc	211	if (title[0] == 0)
357	astrand	107	{
358			strcpy(title, "rdesktop - ");
359			strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
360			}
361	matty	12
362	astrand	333	#ifdef RDP2VNC
363			rdp2vnc_connect(server, flags, domain, password, shell, directory);
364			#else
365
366	astrand	82	if (!ui_init())
367			return 1;
368	astrand	66
369	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
370			return 1;
371
372	matthewc	122	DEBUG(("Connection successful.\n"));
373	matthewc	211	memset(password, 0, sizeof(password));
374	matthewc	53
375	jsorg71	100	if (ui_create_window())
376	matty	10	{
377			rdp_main_loop();
378			ui_destroy_window();
379			}
380
381	matthewc	122	DEBUG(("Disconnecting...\n"));
382	matthewc	53	rdp_disconnect();
383	matthewc	188	ui_deinit();
384	astrand	333
385			#endif
386
387	matty	10	return 0;
388			}
389
390	matthewc	220	#ifdef EGD_SOCKET
391			/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
392			static BOOL
393			generate_random_egd(uint8 * buf)
394			{
395			struct sockaddr_un addr;
396			BOOL ret = False;
397			int fd;
398
399			fd = socket(AF_UNIX, SOCK_STREAM, 0);
400			if (fd == -1)
401			return False;
402
403			addr.sun_family = AF_UNIX;
404			memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
405	astrand	259	if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
406	matthewc	220	goto err;
407
408			/* PRNGD and EGD use a simple communications protocol */
409	astrand	259	buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
410			buf[1] = 32; /* Number of requested random bytes */
411	matthewc	220	if (write(fd, buf, 2) != 2)
412			goto err;
413
414	astrand	259	if ((read(fd, buf, 1) != 1) \|\| (buf[0] == 0)) /* Available? */
415	matthewc	220	goto err;
416
417			if (read(fd, buf, 32) != 32)
418			goto err;
419
420			ret = True;
421
422	astrand	259	err:
423	matthewc	220	close(fd);
424			return ret;
425			}
426			#endif
427
428	matty	10	/* Generate a 32-byte random for the secure transport code. */
429	matty	25	void
430	astrand	64	generate_random(uint8 * random)
431	matty	10	{
432			struct stat st;
433	matty	22	struct tms tmsbuf;
434	matthewc	220	MD5_CTX md5;
435			uint32 *r;
436			int fd, n;
437	matty	10
438	matthewc	220	/* If we have a kernel random device, try that first */
439	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
440			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
441	matty	10	{
442	matthewc	220	n = read(fd, random, 32);
443	matty	10	close(fd);
444	matthewc	220	if (n == 32)
445			return;
446	matty	10	}
447
448	matthewc	220	#ifdef EGD_SOCKET
449			/* As a second preference use an EGD */
450			if (generate_random_egd(random))
451			return;
452			#endif
453
454	matty	10	/* Otherwise use whatever entropy we can gather - ideas welcome. */
455	astrand	259	r = (uint32 *) random;
456	matty	10	r[0] = (getpid()) \| (getppid() << 16);
457			r[1] = (getuid()) \| (getgid() << 16);
458	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
459			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
460	matty	10	stat("/tmp", &st);
461			r[5] = st.st_atime;
462			r[6] = st.st_mtime;
463			r[7] = st.st_ctime;
464	matthewc	220
465			/* Hash both halves with MD5 to obscure possible patterns */
466			MD5_Init(&md5);
467	astrand	259	MD5_Update(&md5, random, 16);
468	matthewc	220	MD5_Final(random, &md5);
469	astrand	259	MD5_Update(&md5, random + 16, 16);
470			MD5_Final(random + 16, &md5);
471	matty	10	}
472
473			/* malloc; exit if out of memory */
474	matty	25	void *
475			xmalloc(int size)
476	matty	10	{
477			void *mem = malloc(size);
478			if (mem == NULL)
479			{
480	matty	30	error("xmalloc %d\n", size);
481	matty	10	exit(1);
482			}
483			return mem;
484			}
485
486			/* realloc; exit if out of memory */
487	matty	25	void *
488			xrealloc(void *oldmem, int size)
489	matty	10	{
490			void *mem = realloc(oldmem, size);
491			if (mem == NULL)
492			{
493	matty	30	error("xrealloc %d\n", size);
494	matty	10	exit(1);
495			}
496			return mem;
497			}
498
499			/* free */
500	matty	25	void
501			xfree(void *mem)
502	matty	10	{
503			free(mem);
504			}
505
506	matty	30	/* report an error */
507	matty	25	void
508	matty	30	error(char *format, ...)
509			{
510			va_list ap;
511
512			fprintf(stderr, "ERROR: ");
513
514			va_start(ap, format);
515			vfprintf(stderr, format, ap);
516			va_end(ap);
517			}
518
519	matthewc	297	/* report a warning */
520			void
521			warning(char *format, ...)
522			{
523			va_list ap;
524
525			fprintf(stderr, "WARNING: ");
526
527			va_start(ap, format);
528			vfprintf(stderr, format, ap);
529			va_end(ap);
530			}
531
532	matty	30	/* report an unimplemented protocol feature */
533			void
534			unimpl(char *format, ...)
535			{
536			va_list ap;
537
538			fprintf(stderr, "NOT IMPLEMENTED: ");
539
540			va_start(ap, format);
541			vfprintf(stderr, format, ap);
542			va_end(ap);
543			}
544
545			/* produce a hex dump */
546			void
547	matty	25	hexdump(unsigned char *p, unsigned int len)
548	matty	10	{
549			unsigned char *line = p;
550			unsigned int thisline, offset = 0;
551			int i;
552
553			while (offset < len)
554			{
555	matthewc	169	printf("%04x ", offset);
556	matty	10	thisline = len - offset;
557			if (thisline > 16)
558			thisline = 16;
559
560			for (i = 0; i < thisline; i++)
561	matthewc	169	printf("%02x ", line[i]);
562	matty	10
563	matty	30	for (; i < 16; i++)
564	matthewc	169	printf(" ");
565	matty	30
566	matty	10	for (i = 0; i < thisline; i++)
567	matthewc	169	printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
568	matty	10
569	matthewc	169	printf("\n");
570	matty	10	offset += thisline;
571			line += thisline;
572			}
573			}
574	astrand	325
575
576			int
577			load_licence(unsigned char **data)
578			{
579			char *path;
580			char *home;
581			struct stat st;
582			int fd;
583
584			home = getenv("HOME");
585			if (home == NULL)
586			return -1;
587
588			path = xmalloc(strlen(home) + strlen(hostname) + 20);
589			sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
590
591			fd = open(path, O_RDONLY);
592			if (fd == -1)
593			return -1;
594
595			if (fstat(fd, &st))
596			return -1;
597
598			*data = xmalloc(st.st_size);
599			return read(fd, *data, st.st_size);
600			}
601
602			void
603			save_licence(unsigned char *data, int length)
604			{
605			char fpath; / file path for licence */
606			char fname, fnamewrk; /* file name for licence .inkl path. */
607			char *home;
608			uint32 y;
609			struct flock fnfl;
610			int fnfd, fnwrkfd, i, wlen;
611			struct stream s, *s_ptr;
612			uint32 len;
613
614			/* Construct a stream, so that we can use macros to extract the
615			* licence.
616			*/
617			s_ptr = &s;
618			s_ptr->p = data;
619			/* Skip first two bytes */
620			in_uint16(s_ptr, len);
621
622			/* Skip three strings */
623			for (i = 0; i < 3; i++)
624			{
625			in_uint32(s_ptr, len);
626			s_ptr->p += len;
627			/* Make sure that we won't be past the end of data after
628			* reading the next length value
629			*/
630			if ((s_ptr->p) + 4 > data + length)
631			{
632			printf("Error in parsing licence key.\n");
633			printf("Strings %d end value %x > supplied length (%x)\n", i,
634			(unsigned int) s_ptr->p, (unsigned int) data + length);
635			return;
636			}
637			}
638			in_uint32(s_ptr, len);
639			if (s_ptr->p + len > data + length)
640			{
641			printf("Error in parsing licence key.\n");
642			printf("End of licence %x > supplied length (%x)\n",
643			(unsigned int) s_ptr->p + len, (unsigned int) data + length);
644			return;
645			}
646
647			home = getenv("HOME");
648			if (home == NULL)
649			return;
650
651			/* set and create the directory -- if it doesn't exist. */
652			fpath = xmalloc(strlen(home) + 11);
653			STRNCPY(fpath, home, strlen(home) + 1);
654
655			sprintf(fpath, "%s/.rdesktop", fpath);
656			if (mkdir(fpath, 0700) == -1 && errno != EEXIST)
657			{
658			perror("mkdir");
659			exit(1);
660			}
661
662			/* set the real licence filename, and put a write lock on it. */
663			fname = xmalloc(strlen(fpath) + strlen(hostname) + 10);
664			sprintf(fname, "%s/licence.%s", fpath, hostname);
665			fnfd = open(fname, O_RDONLY);
666			if (fnfd != -1)
667			{
668			fnfl.l_type = F_WRLCK;
669			fnfl.l_whence = SEEK_SET;
670			fnfl.l_start = 0;
671			fnfl.l_len = 1;
672			fcntl(fnfd, F_SETLK, &fnfl);
673			}
674
675			/* create a temporary licence file */
676			fnamewrk = xmalloc(strlen(fname) + 12);
677			for (y = 0;; y++)
678			{
679			sprintf(fnamewrk, "%s.%lu", fname, (long unsigned int) y);
680			fnwrkfd = open(fnamewrk, O_WRONLY \| O_CREAT \| O_EXCL, 0600);
681			if (fnwrkfd == -1)
682			{
683			if (errno == EINTR \|\| errno == EEXIST)
684			continue;
685			perror("create");
686			exit(1);
687			}
688			break;
689			}
690			/* write to the licence file */
691			for (y = 0; y < len;)
692			{
693			do
694			{
695			wlen = write(fnwrkfd, s_ptr->p + y, len - y);
696			}
697			while (wlen == -1 && errno == EINTR);
698			if (wlen < 1)
699			{
700			perror("write");
701			unlink(fnamewrk);
702			exit(1);
703			}
704			y += wlen;
705			}
706
707			/* close the file and rename it to fname */
708			if (close(fnwrkfd) == -1)
709			{
710			perror("close");
711			unlink(fnamewrk);
712			exit(1);
713			}
714			if (rename(fnamewrk, fname) == -1)
715			{
716			perror("rename");
717			unlink(fnamewrk);
718			exit(1);
719			}
720			/* close the file lock on fname */
721			if (fnfd != -1)
722			{
723			fnfl.l_type = F_UNLCK;
724			fnfl.l_whence = SEEK_SET;
725			fnfl.l_start = 0;
726			fnfl.l_len = 1;
727			fcntl(fnfd, F_SETLK, &fnfl);
728			close(fnfd);
729			}
730
731			}