cfg.cpp 7.9 KB

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  1. /* SLiM - Simple Login Manager
  2. Copyright (C) 2004-05 Simone Rota <sip@varlock.com>
  3. Copyright (C) 2004-05 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("login_cmd","exec /bin/bash -login ~/.xinitrc %session"));
  22. options.insert(option("halt_cmd","/sbin/shutdown -h now"));
  23. options.insert(option("reboot_cmd","/sbin/shutdown -r now"));
  24. options.insert(option("suspend_cmd",""));
  25. 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"""));
  26. options.insert(option("screenshot_cmd","import -window root /login.app.png"));
  27. options.insert(option("welcome_msg","Welcome to %host"));
  28. options.insert(option("default_user",""));
  29. options.insert(option("current_theme","default"));
  30. options.insert(option("lockfile","/var/run/slim.lock"));
  31. options.insert(option("logfile","/var/log/slim.log"));
  32. options.insert(option("shutdown_msg","The system is halting..."));
  33. options.insert(option("reboot_msg","The system is rebooting..."));
  34. options.insert(option("sessions","wmaker,blackbox,icewm"));
  35. // Theme stuff
  36. options.insert(option("input_panel_x","50%"));
  37. options.insert(option("input_panel_y","40%"));
  38. options.insert(option("input_name_x","200"));
  39. options.insert(option("input_name_y","154"));
  40. options.insert(option("input_pass_x","-1")); // default is single inputbox
  41. options.insert(option("input_pass_y","-1"));
  42. options.insert(option("input_font","Verdana:size=11"));
  43. options.insert(option("input_color", "#000000"));
  44. options.insert(option("input_cursor_height","20"));
  45. options.insert(option("input_maxlength_name","20"));
  46. options.insert(option("input_maxlength_passwd","20"));
  47. options.insert(option("input_shadow_xoffset", "0"));
  48. options.insert(option("input_shadow_yoffset", "0"));
  49. options.insert(option("input_shadow_color","#FFFFFF"));
  50. options.insert(option("welcome_font","Verdana:size=14"));
  51. options.insert(option("welcome_color","#FFFFFF"));
  52. options.insert(option("welcome_x","-1"));
  53. options.insert(option("welcome_y","-1"));
  54. options.insert(option("welcome_shadow_xoffset", "0"));
  55. options.insert(option("welcome_shadow_yoffset", "0"));
  56. options.insert(option("welcome_shadow_color","#FFFFFF"));
  57. options.insert(option("intro_msg",""));
  58. options.insert(option("intro_font","Verdana:size=14"));
  59. options.insert(option("intro_color","#FFFFFF"));
  60. options.insert(option("intro_x","-1"));
  61. options.insert(option("intro_y","-1"));
  62. options.insert(option("background_style","stretch"));
  63. options.insert(option("background_color","#CCCCCC"));
  64. options.insert(option("username_font","Verdana:size=12"));
  65. options.insert(option("username_color","#FFFFFF"));
  66. options.insert(option("username_x","-1"));
  67. options.insert(option("username_y","-1"));
  68. options.insert(option("username_msg","Please enter your username"));
  69. options.insert(option("username_shadow_xoffset", "0"));
  70. options.insert(option("username_shadow_yoffset", "0"));
  71. options.insert(option("username_shadow_color","#FFFFFF"));
  72. options.insert(option("password_x","-1"));
  73. options.insert(option("password_y","-1"));
  74. options.insert(option("password_msg","Please enter your password"));
  75. options.insert(option("msg_color","#FFFFFF"));
  76. options.insert(option("msg_font","Verdana:size=16:bold"));
  77. options.insert(option("msg_x","40"));
  78. options.insert(option("msg_y","40"));
  79. options.insert(option("msg_shadow_xoffset", "0"));
  80. options.insert(option("msg_shadow_yoffset", "0"));
  81. options.insert(option("msg_shadow_color","#FFFFFF"));
  82. error = "";
  83. }
  84. /*
  85. * Creates the Cfg object and parses
  86. * known options from the given configfile / themefile
  87. */
  88. bool Cfg::readConf(string configfile) {
  89. int n = -1;
  90. string line, fn(configfile);
  91. map<string,string>::iterator it;
  92. string op;
  93. ifstream cfgfile( fn.c_str() );
  94. if (cfgfile) {
  95. while (getline( cfgfile, line )) {
  96. it = options.begin();
  97. while (it != options.end()) {
  98. op = it->first;
  99. n = line.find(op);
  100. if (n == 0)
  101. options[op] = parseOption(line, op);
  102. it++;
  103. }
  104. }
  105. cfgfile.close();
  106. return true;
  107. } else {
  108. error = "Cannot read configuration file: " + configfile;
  109. return false;
  110. }
  111. }
  112. /* Returns the option value, trimmed */
  113. string Cfg::parseOption(string line, string option ) {
  114. return Trim( line.substr(option.size(), line.size() - option.size()));
  115. }
  116. const string& Cfg::getError() const {
  117. return error;
  118. }
  119. string& Cfg::getOption(string option) {
  120. return options[option];
  121. }
  122. /* return a trimmed string */
  123. string Cfg::Trim( const string& s ) {
  124. if ( s.empty() ) {
  125. return s;
  126. }
  127. int pos = 0;
  128. string line = s;
  129. string::size_type len = line.length();
  130. while ( pos < len && isspace( line[pos] ) ) {
  131. ++pos;
  132. }
  133. line.erase( 0, pos );
  134. pos = line.length()-1;
  135. while ( pos > -1 && isspace( line[pos] ) ) {
  136. --pos;
  137. }
  138. if ( pos != -1 ) {
  139. line.erase( pos+1 );
  140. }
  141. return line;
  142. }
  143. /* Return the welcome message with replaced vars */
  144. string Cfg::getWelcomeMessage(){
  145. string s = getOption("welcome_msg");
  146. int n = -1;
  147. n = s.find("%host");
  148. if (n >= 0) {
  149. string tmp = s.substr(0, n);
  150. char host[40];
  151. gethostname(host,40);
  152. tmp = tmp + host;
  153. tmp = tmp + s.substr(n+5, s.size() - n);
  154. s = tmp;
  155. }
  156. n = s.find("%domain");
  157. if (n >= 0) {
  158. string tmp = s.substr(0, n);;
  159. char domain[40];
  160. getdomainname(domain,40);
  161. tmp = tmp + domain;
  162. tmp = tmp + s.substr(n+7, s.size() - n);
  163. s = tmp;
  164. }
  165. return s;
  166. }
  167. int Cfg::string2int(const char* string, bool* ok) {
  168. char* err = 0;
  169. int l = (int)strtol(string, &err, 10);
  170. if (ok) {
  171. *ok = (*err == 0);
  172. }
  173. return (*err == 0) ? l : 0;
  174. }
  175. // Get absolute position
  176. int Cfg::absolutepos(const string& position, int max, int width) {
  177. int n = -1;
  178. n = position.find("%");
  179. if (n>0) { // X Position expressed in percentage
  180. const char* tmp = position.substr(0, n).c_str();
  181. int result = (max*string2int(tmp)/100) - (width / 2);
  182. return result < 0 ? 0 : result ;
  183. } else { // Absolute X position
  184. return string2int(position.c_str());
  185. }
  186. }
  187. // split a comma separated string into a vector of strings
  188. void Cfg::split(vector<string>& v, const string& str, char c) {
  189. v.clear();
  190. string::const_iterator s = str.begin();
  191. while (true) {
  192. string::const_iterator begin = s;
  193. while (*s != c && s != str.end()) { ++s; }
  194. v.push_back(string(begin, s));
  195. if (s == str.end()) {
  196. break;
  197. }
  198. if (++s == str.end()) {
  199. v.push_back("");
  200. break;
  201. }
  202. }
  203. }
  204. string Cfg::nextSession(string current) {
  205. vector<string> sessions;
  206. split(sessions, getOption("sessions"), ',');
  207. if (sessions.size() <= 1)
  208. return current;
  209. for (int i=0; i<sessions.size()-1; i++) {
  210. if (current == sessions[i]) {
  211. return sessions[i+1];
  212. }
  213. }
  214. return sessions[0];
  215. }