cfg.cpp 8.2 KB

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  1. /* SLiM - Simple Login Manager
  2. Copyright (C) 2004-06 Simone Rota <sip@varlock.com>
  3. Copyright (C) 2004-06 Johannes Winkelmann <jw@tks6.net>
  4. This program is free software; you can redistribute it and/or modify
  5. it under the terms of the GNU General Public License as published by
  6. the Free Software Foundation; either version 2 of the License, or
  7. (at your option) any later version.
  8. */
  9. #include <fstream>
  10. #include <string>
  11. #include <iostream>
  12. #include <unistd.h>
  13. #include "cfg.h"
  14. using namespace std;
  15. typedef pair<string,string> option;
  16. Cfg::Cfg() {
  17. // Configuration options
  18. options.insert(option("default_path","./:/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin"));
  19. options.insert(option("default_xserver","/usr/X11R6/bin/X"));
  20. options.insert(option("xserver_arguments",""));
  21. options.insert(option("numlock",""));
  22. options.insert(option("daemon",""));
  23. options.insert(option("xauth_path","/usr/X11R6/bin/xauth"));
  24. options.insert(option("login_cmd","exec /bin/bash -login ~/.xinitrc %session"));
  25. options.insert(option("halt_cmd","/sbin/shutdown -h now"));
  26. options.insert(option("reboot_cmd","/sbin/shutdown -r now"));
  27. options.insert(option("suspend_cmd",""));
  28. options.insert(option("sessionstart_cmd",""));
  29. options.insert(option("sessionstop_cmd",""));
  30. options.insert(option("console_cmd","/usr/X11R6/bin/xterm -C -fg white -bg black +sb -g %dx%d+%d+%d -fn %dx%d -T ""Console login"" -e /bin/sh -c ""/bin/cat /etc/issue; exec /bin/login"""));
  31. options.insert(option("screenshot_cmd","import -window root /login.app.png"));
  32. options.insert(option("welcome_msg","Welcome to %host"));
  33. options.insert(option("default_user",""));
  34. options.insert(option("current_theme","default"));
  35. options.insert(option("lockfile","/var/run/slim.lock"));
  36. options.insert(option("logfile","/var/log/slim.log"));
  37. options.insert(option("authfile","/var/run/slim.auth"));
  38. options.insert(option("shutdown_msg","The system is halting..."));
  39. options.insert(option("reboot_msg","The system is rebooting..."));
  40. options.insert(option("sessions","wmaker,blackbox,icewm"));
  41. options.insert(option("hidecursor","false"));
  42. // Theme stuff
  43. options.insert(option("input_panel_x","50%"));
  44. options.insert(option("input_panel_y","40%"));
  45. options.insert(option("input_name_x","200"));
  46. options.insert(option("input_name_y","154"));
  47. options.insert(option("input_pass_x","-1")); // default is single inputbox
  48. options.insert(option("input_pass_y","-1"));
  49. options.insert(option("input_font","Verdana:size=11"));
  50. options.insert(option("input_color", "#000000"));
  51. options.insert(option("input_cursor_height","20"));
  52. options.insert(option("input_maxlength_name","20"));
  53. options.insert(option("input_maxlength_passwd","20"));
  54. options.insert(option("input_shadow_xoffset", "0"));
  55. options.insert(option("input_shadow_yoffset", "0"));
  56. options.insert(option("input_shadow_color","#FFFFFF"));
  57. options.insert(option("welcome_font","Verdana:size=14"));
  58. options.insert(option("welcome_color","#FFFFFF"));
  59. options.insert(option("welcome_x","-1"));
  60. options.insert(option("welcome_y","-1"));
  61. options.insert(option("welcome_shadow_xoffset", "0"));
  62. options.insert(option("welcome_shadow_yoffset", "0"));
  63. options.insert(option("welcome_shadow_color","#FFFFFF"));
  64. options.insert(option("intro_msg",""));
  65. options.insert(option("intro_font","Verdana:size=14"));
  66. options.insert(option("intro_color","#FFFFFF"));
  67. options.insert(option("intro_x","-1"));
  68. options.insert(option("intro_y","-1"));
  69. options.insert(option("background_style","stretch"));
  70. options.insert(option("background_color","#CCCCCC"));
  71. options.insert(option("username_font","Verdana:size=12"));
  72. options.insert(option("username_color","#FFFFFF"));
  73. options.insert(option("username_x","-1"));
  74. options.insert(option("username_y","-1"));
  75. options.insert(option("username_msg","Please enter your username"));
  76. options.insert(option("username_shadow_xoffset", "0"));
  77. options.insert(option("username_shadow_yoffset", "0"));
  78. options.insert(option("username_shadow_color","#FFFFFF"));
  79. options.insert(option("password_x","-1"));
  80. options.insert(option("password_y","-1"));
  81. options.insert(option("password_msg","Please enter your password"));
  82. options.insert(option("msg_color","#FFFFFF"));
  83. options.insert(option("msg_font","Verdana:size=16:bold"));
  84. options.insert(option("msg_x","40"));
  85. options.insert(option("msg_y","40"));
  86. options.insert(option("msg_shadow_xoffset", "0"));
  87. options.insert(option("msg_shadow_yoffset", "0"));
  88. options.insert(option("msg_shadow_color","#FFFFFF"));
  89. error = "";
  90. }
  91. /*
  92. * Creates the Cfg object and parses
  93. * known options from the given configfile / themefile
  94. */
  95. bool Cfg::readConf(string configfile) {
  96. int n = -1;
  97. string line, fn(configfile);
  98. map<string,string>::iterator it;
  99. string op;
  100. ifstream cfgfile( fn.c_str() );
  101. if (cfgfile) {
  102. while (getline( cfgfile, line )) {
  103. it = options.begin();
  104. while (it != options.end()) {
  105. op = it->first;
  106. n = line.find(op);
  107. if (n == 0)
  108. options[op] = parseOption(line, op);
  109. it++;
  110. }
  111. }
  112. cfgfile.close();
  113. return true;
  114. } else {
  115. error = "Cannot read configuration file: " + configfile;
  116. return false;
  117. }
  118. }
  119. /* Returns the option value, trimmed */
  120. string Cfg::parseOption(string line, string option ) {
  121. return Trim( line.substr(option.size(), line.size() - option.size()));
  122. }
  123. const string& Cfg::getError() const {
  124. return error;
  125. }
  126. string& Cfg::getOption(string option) {
  127. return options[option];
  128. }
  129. /* return a trimmed string */
  130. string Cfg::Trim( const string& s ) {
  131. if ( s.empty() ) {
  132. return s;
  133. }
  134. int pos = 0;
  135. string line = s;
  136. string::size_type len = line.length();
  137. while ( pos < len && isspace( line[pos] ) ) {
  138. ++pos;
  139. }
  140. line.erase( 0, pos );
  141. pos = line.length()-1;
  142. while ( pos > -1 && isspace( line[pos] ) ) {
  143. --pos;
  144. }
  145. if ( pos != -1 ) {
  146. line.erase( pos+1 );
  147. }
  148. return line;
  149. }
  150. /* Return the welcome message with replaced vars */
  151. string Cfg::getWelcomeMessage(){
  152. string s = getOption("welcome_msg");
  153. int n = -1;
  154. n = s.find("%host");
  155. if (n >= 0) {
  156. string tmp = s.substr(0, n);
  157. char host[40];
  158. gethostname(host,40);
  159. tmp = tmp + host;
  160. tmp = tmp + s.substr(n+5, s.size() - n);
  161. s = tmp;
  162. }
  163. n = s.find("%domain");
  164. if (n >= 0) {
  165. string tmp = s.substr(0, n);;
  166. char domain[40];
  167. getdomainname(domain,40);
  168. tmp = tmp + domain;
  169. tmp = tmp + s.substr(n+7, s.size() - n);
  170. s = tmp;
  171. }
  172. return s;
  173. }
  174. int Cfg::string2int(const char* string, bool* ok) {
  175. char* err = 0;
  176. int l = (int)strtol(string, &err, 10);
  177. if (ok) {
  178. *ok = (*err == 0);
  179. }
  180. return (*err == 0) ? l : 0;
  181. }
  182. // Get absolute position
  183. int Cfg::absolutepos(const string& position, int max, int width) {
  184. int n = -1;
  185. n = position.find("%");
  186. if (n>0) { // X Position expressed in percentage
  187. const char* tmp = position.substr(0, n).c_str();
  188. int result = (max*string2int(tmp)/100) - (width / 2);
  189. return result < 0 ? 0 : result ;
  190. } else { // Absolute X position
  191. return string2int(position.c_str());
  192. }
  193. }
  194. // split a comma separated string into a vector of strings
  195. void Cfg::split(vector<string>& v, const string& str, char c) {
  196. v.clear();
  197. string::const_iterator s = str.begin();
  198. while (true) {
  199. string::const_iterator begin = s;
  200. while (*s != c && s != str.end()) { ++s; }
  201. v.push_back(string(begin, s));
  202. if (s == str.end()) {
  203. break;
  204. }
  205. if (++s == str.end()) {
  206. v.push_back("");
  207. break;
  208. }
  209. }
  210. }
  211. string Cfg::nextSession(string current) {
  212. vector<string> sessions;
  213. split(sessions, getOption("sessions"), ',');
  214. if (sessions.size() <= 1)
  215. return current;
  216. for (int i=0; i<sessions.size()-1; i++) {
  217. if (current == sessions[i]) {
  218. return sessions[i+1];
  219. }
  220. }
  221. return sessions[0];
  222. }