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;

/* 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, "   -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");

        while ((c = getopt(argc, argv, "u:d:s: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 '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 - "));
        }

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