/[rdesktop]/sourceforge.net/trunk/rdesktop/rdesktop.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Annotation of /sourceforge.net/trunk/rdesktop/rdesktop.c

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Revision 171 - (hide annotations)
Tue Sep 17 09:20:13 2002 UTC (21 years, 8 months ago) by n-ki
File MIME type: text/plain
File size: 9085 byte(s)
security: when supplying password as arg it is overwritten in the ps table with XXX. (On BSD based platforms this does nothing.)

1 matty 10 /*
2     rdesktop: A Remote Desktop Protocol client.
3     Entrypoint and utility functions
4 matthewc 122 Copyright (C) Matthew Chapman 1999-2002
5 jsorg71 100
6 matty 10 This program is free software; you can redistribute it and/or modify
7     it under the terms of the GNU General Public License as published by
8     the Free Software Foundation; either version 2 of the License, or
9     (at your option) any later version.
10 jsorg71 100
11 matty 10 This program is distributed in the hope that it will be useful,
12     but WITHOUT ANY WARRANTY; without even the implied warranty of
13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14     GNU General Public License for more details.
15 jsorg71 100
16 matty 10 You should have received a copy of the GNU General Public License
17     along with this program; if not, write to the Free Software
18     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19     */
20    
21 matty 24 #include <stdlib.h> /* malloc realloc free */
22 matty 30 #include <stdarg.h> /* va_list va_start va_end */
23 matty 24 #include <unistd.h> /* read close getuid getgid getpid getppid gethostname */
24     #include <fcntl.h> /* open */
25     #include <pwd.h> /* getpwuid */
26 matthewc 39 #include <limits.h> /* PATH_MAX */
27 matty 24 #include <sys/stat.h> /* stat */
28     #include <sys/time.h> /* gettimeofday */
29     #include <sys/times.h> /* times */
30 matty 10 #include "rdesktop.h"
31    
32 astrand 107 char title[32] = "";
33 matty 10 char username[16];
34     char hostname[16];
35 matthewc 38 char keymapname[16];
36 astrand 66 int keylayout = 0x409; /* Defaults to US keyboard layout */
37 matthewc 160 int width = 800;
38     int height = 600;
39 jsorg71 58 int tcp_port_rdp = TCP_PORT_RDP;
40 matty 28 BOOL bitmap_compression = True;
41 matty 29 BOOL sendmotion = True;
42 matty 10 BOOL orders = True;
43     BOOL licence = True;
44 matty 30 BOOL encryption = True;
45 matty 28 BOOL desktop_save = True;
46     BOOL fullscreen = False;
47 astrand 76 BOOL grab_keyboard = True;
48 matty 10
49     /* Display usage information */
50 matty 25 static void
51     usage(char *program)
52 matty 10 {
53 matthewc 122 fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
54     fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2002 Matt Chapman.\n");
55     fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
56    
57 astrand 111 fprintf(stderr, "Usage: %s [options] server\n", program);
58     fprintf(stderr, " -u: user name\n");
59     fprintf(stderr, " -d: domain\n");
60     fprintf(stderr, " -s: shell\n");
61     fprintf(stderr, " -c: working directory\n");
62     fprintf(stderr, " -p: password (autologon)\n");
63     fprintf(stderr, " -P: askpass-program (autologon)\n");
64     fprintf(stderr, " -n: client hostname\n");
65     fprintf(stderr, " -k: keyboard layout on terminal server (us,sv,gr etc.)\n");
66     fprintf(stderr, " -g: desktop geometry (WxH)\n");
67     fprintf(stderr, " -f: full-screen mode\n");
68     fprintf(stderr, " -b: force bitmap updates\n");
69     fprintf(stderr, " -e: disable encryption (French TS)\n");
70     fprintf(stderr, " -m: do not send motion events\n");
71     fprintf(stderr, " -l: do not request licence\n");
72     fprintf(stderr, " -t: rdp tcp port\n");
73     fprintf(stderr, " -K: keep window manager key bindings\n");
74     fprintf(stderr, " -w: window title\n");
75 matty 10 }
76    
77     /* Client program */
78 matty 25 int
79     main(int argc, char *argv[])
80 matty 10 {
81 matty 30 char fullhostname[64];
82 matty 21 char domain[16];
83     char password[16];
84 astrand 96 char *askpass_result;
85 matty 21 char shell[32];
86     char directory[32];
87 matty 30 struct passwd *pw;
88     char *server, *p;
89     uint32 flags;
90 matty 10 int c;
91    
92 matty 21 flags = RDP_LOGON_NORMAL;
93     domain[0] = password[0] = shell[0] = directory[0] = 0;
94 matthewc 38 strcpy(keymapname, "us");
95 matty 21
96 astrand 107 while ((c = getopt(argc, argv, "u:d:s:c:p:P:n:k:g:t:fbemlKw:h?")) != -1)
97 matty 10 {
98     switch (c)
99     {
100     case 'u':
101 matty 30 STRNCPY(username, optarg, sizeof(username));
102 matty 10 break;
103    
104 matty 21 case 'd':
105 matty 30 STRNCPY(domain, optarg, sizeof(domain));
106 matty 21 break;
107    
108     case 's':
109 matty 30 STRNCPY(shell, optarg, sizeof(shell));
110 matty 21 break;
111    
112     case 'c':
113 matty 30 STRNCPY(directory, optarg, sizeof(directory));
114 matty 21 break;
115    
116 matty 30 case 'p':
117     STRNCPY(password, optarg, sizeof(password));
118     flags |= RDP_LOGON_AUTO;
119 n-ki 171 p = optarg;
120     while (*p)
121     *(p++) = 'X';
122 matty 30 break;
123    
124 astrand 96 case 'P':
125     askpass_result = askpass(optarg, "Enter password");
126     if (askpass_result == NULL)
127     exit(1);
128    
129     STRNCPY(password, askpass_result, sizeof(password));
130     free(askpass_result);
131     flags |= RDP_LOGON_AUTO;
132     break;
133    
134 matty 10 case 'n':
135 matty 30 STRNCPY(hostname, optarg, sizeof(hostname));
136 matty 10 break;
137    
138     case 'k':
139 astrand 82 STRNCPY(keymapname, optarg, sizeof(keymapname));
140 matty 10 break;
141    
142 matty 30 case 'g':
143     width = strtol(optarg, &p, 10);
144     if (*p == 'x')
145 astrand 64 height = strtol(p + 1, NULL, 10);
146 matty 30
147     if ((width == 0) || (height == 0))
148     {
149     error("invalid geometry\n");
150     return 1;
151     }
152 matty 10 break;
153    
154 matty 30 case 'f':
155     fullscreen = True;
156     break;
157    
158 matty 10 case 'b':
159     orders = False;
160     break;
161    
162 matty 30 case 'e':
163     encryption = False;
164 matty 10 break;
165    
166 matty 30 case 'm':
167     sendmotion = False;
168 matty 28 break;
169 matty 29
170 matty 30 case 'l':
171     licence = False;
172 matty 28 break;
173 matty 29
174 jsorg71 58 case 't':
175     tcp_port_rdp = strtol(optarg, NULL, 10);
176     break;
177    
178 astrand 76 case 'K':
179     grab_keyboard = False;
180     break;
181    
182 astrand 107 case 'w':
183     strncpy(title, optarg, sizeof(title));
184     break;
185    
186 matty 28 case 'h':
187 matty 10 case '?':
188     default:
189     usage(argv[0]);
190     return 1;
191     }
192     }
193    
194     if (argc - optind < 1)
195     {
196     usage(argv[0]);
197     return 1;
198     }
199    
200     server = argv[optind];
201    
202     if (username[0] == 0)
203     {
204     pw = getpwuid(getuid());
205     if ((pw == NULL) || (pw->pw_name == NULL))
206     {
207 matty 30 error("could not determine username, use -u\n");
208 matty 10 return 1;
209     }
210    
211 matty 30 STRNCPY(username, pw->pw_name, sizeof(username));
212 matty 10 }
213    
214     if (hostname[0] == 0)
215     {
216 matty 30 if (gethostname(fullhostname, sizeof(fullhostname)) == -1)
217 matty 10 {
218 matty 30 error("could not determine local hostname, use -n\n");
219 matty 10 return 1;
220     }
221 matty 30
222     p = strchr(fullhostname, '.');
223     if (p != NULL)
224     *p = 0;
225    
226     STRNCPY(hostname, fullhostname, sizeof(hostname));
227 matty 10 }
228    
229 matty 30 if (!strcmp(password, "-"))
230     {
231     p = getpass("Password: ");
232     if (p == NULL)
233     {
234     error("failed to read password\n");
235     return 0;
236     }
237     STRNCPY(password, p, sizeof(password));
238     }
239    
240 astrand 114 if (!strlen(title))
241 astrand 107 {
242     strcpy(title, "rdesktop - ");
243     strncat(title, server, sizeof(title) - sizeof("rdesktop - "));
244     }
245 matty 12
246 astrand 82 if (!ui_init())
247     return 1;
248 astrand 66
249 matthewc 53 if (!rdp_connect(server, flags, domain, password, shell, directory))
250     return 1;
251    
252 matthewc 122 DEBUG(("Connection successful.\n"));
253 matthewc 53
254 jsorg71 100 if (ui_create_window())
255 matty 10 {
256     rdp_main_loop();
257     ui_destroy_window();
258     }
259    
260 matthewc 122 DEBUG(("Disconnecting...\n"));
261 matthewc 53 rdp_disconnect();
262 matty 10 return 0;
263     }
264    
265     /* Generate a 32-byte random for the secure transport code. */
266 matty 25 void
267 astrand 64 generate_random(uint8 * random)
268 matty 10 {
269     struct stat st;
270 matty 22 struct tms tmsbuf;
271 matty 24 uint32 *r = (uint32 *) random;
272 matty 10 int fd;
273    
274     /* If we have a kernel random device, use it. */
275 matty 30 if (((fd = open("/dev/urandom", O_RDONLY)) != -1)
276     || ((fd = open("/dev/random", O_RDONLY)) != -1))
277 matty 10 {
278     read(fd, random, 32);
279     close(fd);
280     return;
281     }
282    
283     /* Otherwise use whatever entropy we can gather - ideas welcome. */
284     r[0] = (getpid()) | (getppid() << 16);
285     r[1] = (getuid()) | (getgid() << 16);
286 matty 24 r[2] = times(&tmsbuf); /* system uptime (clocks) */
287     gettimeofday((struct timeval *) &r[3], NULL); /* sec and usec */
288 matty 10 stat("/tmp", &st);
289     r[5] = st.st_atime;
290     r[6] = st.st_mtime;
291     r[7] = st.st_ctime;
292     }
293    
294     /* malloc; exit if out of memory */
295 matty 25 void *
296     xmalloc(int size)
297 matty 10 {
298     void *mem = malloc(size);
299     if (mem == NULL)
300     {
301 matty 30 error("xmalloc %d\n", size);
302 matty 10 exit(1);
303     }
304     return mem;
305     }
306    
307     /* realloc; exit if out of memory */
308 matty 25 void *
309     xrealloc(void *oldmem, int size)
310 matty 10 {
311     void *mem = realloc(oldmem, size);
312     if (mem == NULL)
313     {
314 matty 30 error("xrealloc %d\n", size);
315 matty 10 exit(1);
316     }
317     return mem;
318     }
319    
320     /* free */
321 matty 25 void
322     xfree(void *mem)
323 matty 10 {
324     free(mem);
325     }
326    
327 matty 30 /* report an error */
328 matty 25 void
329 matty 30 error(char *format, ...)
330     {
331     va_list ap;
332    
333     fprintf(stderr, "ERROR: ");
334    
335     va_start(ap, format);
336     vfprintf(stderr, format, ap);
337     va_end(ap);
338     }
339    
340     /* report an unimplemented protocol feature */
341     void
342     unimpl(char *format, ...)
343     {
344     va_list ap;
345    
346     fprintf(stderr, "NOT IMPLEMENTED: ");
347    
348     va_start(ap, format);
349     vfprintf(stderr, format, ap);
350     va_end(ap);
351     }
352    
353     /* produce a hex dump */
354     void
355 matty 25 hexdump(unsigned char *p, unsigned int len)
356 matty 10 {
357     unsigned char *line = p;
358     unsigned int thisline, offset = 0;
359     int i;
360    
361     while (offset < len)
362     {
363 matthewc 169 printf("%04x ", offset);
364 matty 10 thisline = len - offset;
365     if (thisline > 16)
366     thisline = 16;
367    
368     for (i = 0; i < thisline; i++)
369 matthewc 169 printf("%02x ", line[i]);
370 matty 10
371 matty 30 for (; i < 16; i++)
372 matthewc 169 printf(" ");
373 matty 30
374 matty 10 for (i = 0; i < thisline; i++)
375 matthewc 169 printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
376 matty 10
377 matthewc 169 printf("\n");
378 matty 10 offset += thisline;
379     line += thisline;
380     }
381     }
382 matthewc 39
383 matthewc 159 #ifdef SAVE_LICENCE
384 matthewc 39 int
385     load_licence(unsigned char **data)
386     {
387     char path[PATH_MAX];
388     char *home;
389     struct stat st;
390     int fd;
391    
392     home = getenv("HOME");
393     if (home == NULL)
394     return -1;
395    
396     STRNCPY(path, home, sizeof(path));
397 astrand 64 strncat(path, "/.rdesktop/licence", sizeof(path) - strlen(path) - 1);
398 matthewc 39
399     fd = open(path, O_RDONLY);
400     if (fd == -1)
401     return -1;
402    
403     if (fstat(fd, &st))
404     return -1;
405    
406     *data = xmalloc(st.st_size);
407     return read(fd, *data, st.st_size);
408     }
409    
410     void
411     save_licence(unsigned char *data, int length)
412     {
413     char path[PATH_MAX];
414     char *home;
415     int fd;
416    
417     home = getenv("HOME");
418     if (home == NULL)
419     return;
420    
421     STRNCPY(path, home, sizeof(path));
422 astrand 64 strncat(path, "/.rdesktop", sizeof(path) - strlen(path) - 1);
423 matthewc 39 mkdir(path, 0700);
424    
425 astrand 64 strncat(path, "/licence", sizeof(path) - strlen(path) - 1);
426 matthewc 39
427 astrand 64 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
428 matthewc 39 if (fd == -1)
429     {
430     perror("open");
431     return;
432     }
433    
434     write(fd, data, length);
435     close(fd);
436     }
437 matthewc 159 #endif

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