seamlessrdp-branch/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;
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;
        }
}


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	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	astrand	318	if (server_bpp != 8 && server_bpp != 16 && server_bpp != 15
247			&& server_bpp != 24)
248	jsorg71	309	{
249			error("invalid server bpp\n");
250			return 1;
251			}
252			break;
253
254	matty	28	case 'h':
255	matty	10	case '?':
256			default:
257			usage(argv[0]);
258			return 1;
259			}
260			}
261
262			if (argc - optind < 1)
263			{
264			usage(argv[0]);
265			return 1;
266			}
267
268	matthewc	222	STRNCPY(server, argv[optind], sizeof(server));
269			p = strchr(server, ':');
270			if (p != NULL)
271			{
272			tcp_port_rdp = strtol(p + 1, NULL, 10);
273			*p = 0;
274			}
275	matty	10
276	astrand	289	if (!username_option)
277	matty	10	{
278			pw = getpwuid(getuid());
279			if ((pw == NULL) \|\| (pw->pw_name == NULL))
280			{
281	matty	30	error("could not determine username, use -u\n");
282	matty	10	return 1;
283			}
284
285	matty	30	STRNCPY(username, pw->pw_name, sizeof(username));
286	matty	10	}
287
288			if (hostname[0] == 0)
289			{
290	matty	30	if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
291	matty	10	{
292	matty	30	error("could not determine local hostname, use -n\n");
293	matty	10	return 1;
294			}
295	matty	30
296			p = strchr(fullhostname, '.');
297			if (p != NULL)
298			*p = 0;
299
300			STRNCPY(hostname, fullhostname, sizeof(hostname));
301	matty	10	}
302
303	matthewc	211	if (prompt_password && read_password(password, sizeof(password)))
304			flags \|= RDP_LOGON_AUTO;
305	matty	30
306	matthewc	211	if (title[0] == 0)
307	astrand	107	{
308			strcpy(title, "rdesktop - ");
309			strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
310			}
311	matty	12
312	astrand	82	if (!ui_init())
313			return 1;
314	astrand	66
315	matthewc	53	if (!rdp_connect(server, flags, domain, password, shell, directory))
316			return 1;
317
318	matthewc	122	DEBUG(("Connection successful.\n"));
319	matthewc	211	memset(password, 0, sizeof(password));
320	matthewc	53
321	jsorg71	100	if (ui_create_window())
322	matty	10	{
323			rdp_main_loop();
324			ui_destroy_window();
325			}
326
327	matthewc	122	DEBUG(("Disconnecting...\n"));
328	matthewc	53	rdp_disconnect();
329	matthewc	188	ui_deinit();
330	matty	10	return 0;
331			}
332
333	matthewc	220	#ifdef EGD_SOCKET
334			/* Read 32 random bytes from PRNGD or EGD socket (based on OpenSSL RAND_egd) */
335			static BOOL
336			generate_random_egd(uint8 * buf)
337			{
338			struct sockaddr_un addr;
339			BOOL ret = False;
340			int fd;
341
342			fd = socket(AF_UNIX, SOCK_STREAM, 0);
343			if (fd == -1)
344			return False;
345
346			addr.sun_family = AF_UNIX;
347			memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET));
348	astrand	259	if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
349	matthewc	220	goto err;
350
351			/* PRNGD and EGD use a simple communications protocol */
352	astrand	259	buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */
353			buf[1] = 32; /* Number of requested random bytes */
354	matthewc	220	if (write(fd, buf, 2) != 2)
355			goto err;
356
357	astrand	259	if ((read(fd, buf, 1) != 1) \|\| (buf[0] == 0)) /* Available? */
358	matthewc	220	goto err;
359
360			if (read(fd, buf, 32) != 32)
361			goto err;
362
363			ret = True;
364
365	astrand	259	err:
366	matthewc	220	close(fd);
367			return ret;
368			}
369			#endif
370
371	matty	10	/* Generate a 32-byte random for the secure transport code. */
372	matty	25	void
373	astrand	64	generate_random(uint8 * random)
374	matty	10	{
375			struct stat st;
376	matty	22	struct tms tmsbuf;
377	matthewc	220	MD5_CTX md5;
378			uint32 *r;
379			int fd, n;
380	matty	10
381	matthewc	220	/* If we have a kernel random device, try that first */
382	matty	30	if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
383			\|\| ((fd = open("/dev/random", O_RDONLY)) != -1))
384	matty	10	{
385	matthewc	220	n = read(fd, random, 32);
386	matty	10	close(fd);
387	matthewc	220	if (n == 32)
388			return;
389	matty	10	}
390
391	matthewc	220	#ifdef EGD_SOCKET
392			/* As a second preference use an EGD */
393			if (generate_random_egd(random))
394			return;
395			#endif
396
397	matty	10	/* Otherwise use whatever entropy we can gather - ideas welcome. */
398	astrand	259	r = (uint32 *) random;
399	matty	10	r[0] = (getpid()) \| (getppid() << 16);
400			r[1] = (getuid()) \| (getgid() << 16);
401	matty	24	r[2] = times(&tmsbuf); /* system uptime (clocks) */
402			gettimeofday((struct timeval ) &r[3], NULL); / sec and usec */
403	matty	10	stat("/tmp", &st);
404			r[5] = st.st_atime;
405			r[6] = st.st_mtime;
406			r[7] = st.st_ctime;
407	matthewc	220
408			/* Hash both halves with MD5 to obscure possible patterns */
409			MD5_Init(&md5);
410	astrand	259	MD5_Update(&md5, random, 16);
411	matthewc	220	MD5_Final(random, &md5);
412	astrand	259	MD5_Update(&md5, random + 16, 16);
413			MD5_Final(random + 16, &md5);
414	matty	10	}
415
416			/* malloc; exit if out of memory */
417	matty	25	void *
418			xmalloc(int size)
419	matty	10	{
420			void *mem = malloc(size);
421			if (mem == NULL)
422			{
423	matty	30	error("xmalloc %d\n", size);
424	matty	10	exit(1);
425			}
426			return mem;
427			}
428
429			/* realloc; exit if out of memory */
430	matty	25	void *
431			xrealloc(void *oldmem, int size)
432	matty	10	{
433			void *mem = realloc(oldmem, size);
434			if (mem == NULL)
435			{
436	matty	30	error("xrealloc %d\n", size);
437	matty	10	exit(1);
438			}
439			return mem;
440			}
441
442			/* free */
443	matty	25	void
444			xfree(void *mem)
445	matty	10	{
446			free(mem);
447			}
448
449	matty	30	/* report an error */
450	matty	25	void
451	matty	30	error(char *format, ...)
452			{
453			va_list ap;
454
455			fprintf(stderr, "ERROR: ");
456
457			va_start(ap, format);
458			vfprintf(stderr, format, ap);
459			va_end(ap);
460			}
461
462	matthewc	297	/* report a warning */
463			void
464			warning(char *format, ...)
465			{
466			va_list ap;
467
468			fprintf(stderr, "WARNING: ");
469
470			va_start(ap, format);
471			vfprintf(stderr, format, ap);
472			va_end(ap);
473			}
474
475	matty	30	/* report an unimplemented protocol feature */
476			void
477			unimpl(char *format, ...)
478			{
479			va_list ap;
480
481			fprintf(stderr, "NOT IMPLEMENTED: ");
482
483			va_start(ap, format);
484			vfprintf(stderr, format, ap);
485			va_end(ap);
486			}
487
488			/* produce a hex dump */
489			void
490	matty	25	hexdump(unsigned char *p, unsigned int len)
491	matty	10	{
492			unsigned char *line = p;
493			unsigned int thisline, offset = 0;
494			int i;
495
496			while (offset < len)
497			{
498	matthewc	169	printf("%04x ", offset);
499	matty	10	thisline = len - offset;
500			if (thisline > 16)
501			thisline = 16;
502
503			for (i = 0; i < thisline; i++)
504	matthewc	169	printf("%02x ", line[i]);
505	matty	10
506	matty	30	for (; i < 16; i++)
507	matthewc	169	printf(" ");
508	matty	30
509	matty	10	for (i = 0; i < thisline; i++)
510	matthewc	169	printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
511	matty	10
512	matthewc	169	printf("\n");
513	matty	10	offset += thisline;
514			line += thisline;
515			}
516			}
517	astrand	325
518
519			int
520			load_licence(unsigned char **data)
521			{
522			char *path;
523			char *home;
524			struct stat st;
525			int fd;
526
527			home = getenv("HOME");
528			if (home == NULL)
529			return -1;
530
531			path = xmalloc(strlen(home) + strlen(hostname) + 20);
532			sprintf(path, "%s/.rdesktop/licence.%s", home, hostname);
533
534			fd = open(path, O_RDONLY);
535			if (fd == -1)
536			return -1;
537
538			if (fstat(fd, &st))
539			return -1;
540
541			*data = xmalloc(st.st_size);
542			return read(fd, *data, st.st_size);
543			}
544
545			void
546			save_licence(unsigned char *data, int length)
547			{
548			char fpath; / file path for licence */
549			char fname, fnamewrk; /* file name for licence .inkl path. */
550			char *home;
551			uint32 y;
552			struct flock fnfl;
553			int fnfd, fnwrkfd, i, wlen;
554			struct stream s, *s_ptr;
555			uint32 len;
556
557			/* Construct a stream, so that we can use macros to extract the
558			* licence.
559			*/
560			s_ptr = &s;
561			s_ptr->p = data;
562			/* Skip first two bytes */
563			in_uint16(s_ptr, len);
564
565			/* Skip three strings */
566			for (i = 0; i < 3; i++)
567			{
568			in_uint32(s_ptr, len);
569			s_ptr->p += len;
570			/* Make sure that we won't be past the end of data after
571			* reading the next length value
572			*/
573			if ((s_ptr->p) + 4 > data + length)
574			{
575			printf("Error in parsing licence key.\n");
576			printf("Strings %d end value %x > supplied length (%x)\n", i,
577			(unsigned int) s_ptr->p, (unsigned int) data + length);
578			return;
579			}
580			}
581			in_uint32(s_ptr, len);
582			if (s_ptr->p + len > data + length)
583			{
584			printf("Error in parsing licence key.\n");
585			printf("End of licence %x > supplied length (%x)\n",
586			(unsigned int) s_ptr->p + len, (unsigned int) data + length);
587			return;
588			}
589
590			home = getenv("HOME");
591			if (home == NULL)
592			return;
593
594			/* set and create the directory -- if it doesn't exist. */
595			fpath = xmalloc(strlen(home) + 11);
596			STRNCPY(fpath, home, strlen(home) + 1);
597
598			sprintf(fpath, "%s/.rdesktop", fpath);
599			if (mkdir(fpath, 0700) == -1 && errno != EEXIST)
600			{
601			perror("mkdir");
602			exit(1);
603			}
604
605			/* set the real licence filename, and put a write lock on it. */
606			fname = xmalloc(strlen(fpath) + strlen(hostname) + 10);
607			sprintf(fname, "%s/licence.%s", fpath, hostname);
608			fnfd = open(fname, O_RDONLY);
609			if (fnfd != -1)
610			{
611			fnfl.l_type = F_WRLCK;
612			fnfl.l_whence = SEEK_SET;
613			fnfl.l_start = 0;
614			fnfl.l_len = 1;
615			fcntl(fnfd, F_SETLK, &fnfl);
616			}
617
618			/* create a temporary licence file */
619			fnamewrk = xmalloc(strlen(fname) + 12);
620			for (y = 0;; y++)
621			{
622			sprintf(fnamewrk, "%s.%lu", fname, (long unsigned int) y);
623			fnwrkfd = open(fnamewrk, O_WRONLY \| O_CREAT \| O_EXCL, 0600);
624			if (fnwrkfd == -1)
625			{
626			if (errno == EINTR \|\| errno == EEXIST)
627			continue;
628			perror("create");
629			exit(1);
630			}
631			break;
632			}
633			/* write to the licence file */
634			for (y = 0; y < len;)
635			{
636			do
637			{
638			wlen = write(fnwrkfd, s_ptr->p + y, len - y);
639			}
640			while (wlen == -1 && errno == EINTR);
641			if (wlen < 1)
642			{
643			perror("write");
644			unlink(fnamewrk);
645			exit(1);
646			}
647			y += wlen;
648			}
649
650			/* close the file and rename it to fname */
651			if (close(fnwrkfd) == -1)
652			{
653			perror("close");
654			unlink(fnamewrk);
655			exit(1);
656			}
657			if (rename(fnamewrk, fname) == -1)
658			{
659			perror("rename");
660			unlink(fnamewrk);
661			exit(1);
662			}
663			/* close the file lock on fname */
664			if (fnfd != -1)
665			{
666			fnfl.l_type = F_UNLCK;
667			fnfl.l_whence = SEEK_SET;
668			fnfl.l_start = 0;
669			fnfl.l_len = 1;
670			fcntl(fnfd, F_SETLK, &fnfl);
671			close(fnfd);
672			}
673
674			}