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/* |
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rdesktop: A Remote Desktop Protocol client. |
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Entrypoint and utility functions |
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Copyright (C) Matthew Chapman 1999-2000 |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#include <stdlib.h> /* malloc realloc free */ |
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#include <unistd.h> /* read close getuid getgid getpid getppid gethostname */ |
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#include <fcntl.h> /* open */ |
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#include <pwd.h> /* getpwuid */ |
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#include <sys/stat.h> /* stat */ |
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#include <sys/time.h> /* gettimeofday */ |
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#include <sys/times.h> /* times */ |
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#include "rdesktop.h" |
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|
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char username[16]; |
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char hostname[16]; |
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int width = 800; |
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int height = 600; |
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int keylayout = 0x409; |
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BOOL motion = False; |
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BOOL orders = True; |
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BOOL licence = True; |
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|
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/* Display usage information */ |
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static void usage(char *program) |
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{ |
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STATUS("Usage: %s [options] server\n", program); |
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STATUS(" -u: user name\n"); |
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STATUS(" -n: client hostname\n"); |
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STATUS(" -w: desktop width\n"); |
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STATUS(" -h: desktop height\n"); |
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STATUS(" -k: keyboard layout (hex)\n"); |
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STATUS(" -m: send motion events\n"); |
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STATUS(" -b: force bitmap updates\n"); |
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STATUS(" -l: do not request licence\n\n"); |
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} |
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|
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/* Client program */ |
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int main(int argc, char *argv[]) |
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{ |
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struct passwd *pw; |
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char *server; |
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char title[32]; |
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int c; |
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|
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STATUS("rdesktop: A Remote Desktop Protocol client.\n"); |
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STATUS("Version "VERSION". Copyright (C) 1999-2000 Matt Chapman.\n\n"); |
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|
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while ((c = getopt(argc, argv, "u:n:w:h:k:mbl?")) != -1) |
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{ |
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switch (c) |
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{ |
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case 'u': |
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strncpy(username, optarg, sizeof(username)); |
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break; |
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|
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case 'n': |
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strncpy(hostname, optarg, sizeof(hostname)); |
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break; |
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|
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case 'w': |
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width = strtol(optarg, NULL, 10); |
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break; |
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|
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case 'h': |
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height = strtol(optarg, NULL, 10); |
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break; |
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|
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case 'k': |
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keylayout = strtol(optarg, NULL, 16); |
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break; |
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|
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case 'm': |
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motion = True; |
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break; |
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|
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case 'b': |
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orders = False; |
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break; |
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|
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case 'l': |
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licence = False; |
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break; |
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|
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case '?': |
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default: |
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usage(argv[0]); |
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return 1; |
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} |
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} |
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|
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if (argc - optind < 1) |
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{ |
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usage(argv[0]); |
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return 1; |
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} |
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|
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server = argv[optind]; |
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|
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if (username[0] == 0) |
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{ |
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pw = getpwuid(getuid()); |
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if ((pw == NULL) || (pw->pw_name == NULL)) |
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{ |
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STATUS("Could not determine user name.\n"); |
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return 1; |
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} |
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|
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strncpy(username, pw->pw_name, sizeof(username)); |
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} |
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|
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if (hostname[0] == 0) |
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{ |
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if (gethostname(hostname, sizeof(hostname)) == -1) |
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{ |
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STATUS("Could not determine host name.\n"); |
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return 1; |
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} |
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} |
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|
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if (!rdp_connect(server)) |
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return 1; |
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|
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STATUS("Connection successful.\n"); |
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|
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strcpy(title, "rdesktop - "); |
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strncat(title, server, sizeof(title)); |
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|
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if (ui_create_window(title)) |
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{ |
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rdp_main_loop(); |
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ui_destroy_window(); |
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} |
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|
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rdp_disconnect(); |
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return 0; |
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} |
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|
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/* Generate a 32-byte random for the secure transport code. */ |
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void generate_random(uint8 *random) |
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{ |
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struct stat st; |
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uint32 *r = (uint32 *)random; |
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int fd; |
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|
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/* If we have a kernel random device, use it. */ |
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if ((fd = open("/dev/urandom", O_RDONLY)) != -1) |
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{ |
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read(fd, random, 32); |
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close(fd); |
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return; |
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} |
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|
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/* Otherwise use whatever entropy we can gather - ideas welcome. */ |
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r[0] = (getpid()) | (getppid() << 16); |
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r[1] = (getuid()) | (getgid() << 16); |
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r[2] = times(NULL); /* system uptime (clocks) */ |
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gettimeofday((struct timeval *)&r[3], NULL); /* sec and usec */ |
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stat("/tmp", &st); |
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r[5] = st.st_atime; |
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r[6] = st.st_mtime; |
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r[7] = st.st_ctime; |
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} |
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|
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/* malloc; exit if out of memory */ |
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void *xmalloc(int size) |
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{ |
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void *mem = malloc(size); |
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if (mem == NULL) |
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{ |
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ERROR("xmalloc %d\n", size); |
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exit(1); |
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} |
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return mem; |
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} |
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|
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/* realloc; exit if out of memory */ |
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void *xrealloc(void *oldmem, int size) |
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{ |
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void *mem = realloc(oldmem, size); |
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if (mem == NULL) |
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{ |
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ERROR("xrealloc %d\n", size); |
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exit(1); |
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} |
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return mem; |
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} |
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|
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/* free */ |
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void xfree(void *mem) |
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{ |
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free(mem); |
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} |
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|
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/* Produce a hex dump */ |
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void hexdump(unsigned char *p, unsigned int len) |
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{ |
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unsigned char *line = p; |
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unsigned int thisline, offset = 0; |
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int i; |
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|
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while (offset < len) |
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{ |
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STATUS("%04x ", offset); |
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thisline = len - offset; |
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if (thisline > 16) |
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thisline = 16; |
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|
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for (i = 0; i < thisline; i++) |
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STATUS("%02x ", line[i]) |
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|
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for (; i < 16; i++) |
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STATUS(" "); |
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|
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for (i = 0; i < thisline; i++) |
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STATUS("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.'); |
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|
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STATUS("\n"); |
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offset += thisline; |
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line += thisline; |
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} |
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} |
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