cfg.cpp 9.3 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 <sys/types.h>
  14. #include <sys/stat.h>
  15. #include <dirent.h>
  16. #include "cfg.h"
  17. using namespace std;
  18. typedef pair<string,string> option;
  19. Cfg::Cfg()
  20. : currentSession(-1)
  21. {
  22. // Configuration options
  23. options.insert(option("default_path","./:/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin"));
  24. options.insert(option("default_xserver","/usr/X11R6/bin/X"));
  25. options.insert(option("xserver_arguments",""));
  26. options.insert(option("numlock",""));
  27. options.insert(option("daemon",""));
  28. options.insert(option("xauth_path","/usr/X11R6/bin/xauth"));
  29. options.insert(option("login_cmd","exec /bin/bash -login ~/.xinitrc %session"));
  30. options.insert(option("halt_cmd","/sbin/shutdown -h now"));
  31. options.insert(option("reboot_cmd","/sbin/shutdown -r now"));
  32. options.insert(option("suspend_cmd",""));
  33. options.insert(option("sessionstart_cmd",""));
  34. options.insert(option("sessionstop_cmd",""));
  35. 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"""));
  36. options.insert(option("screenshot_cmd","import -window root /slim.png"));
  37. options.insert(option("welcome_msg","Welcome to %host"));
  38. options.insert(option("default_user",""));
  39. options.insert(option("current_theme","default"));
  40. options.insert(option("lockfile","/var/run/slim.lock"));
  41. options.insert(option("logfile","/var/log/slim.log"));
  42. options.insert(option("authfile","/var/run/slim.auth"));
  43. options.insert(option("shutdown_msg","The system is halting..."));
  44. options.insert(option("reboot_msg","The system is rebooting..."));
  45. options.insert(option("sessions","wmaker,blackbox,icewm"));
  46. options.insert(option("sessiondir",""));
  47. options.insert(option("hidecursor","false"));
  48. // Theme stuff
  49. options.insert(option("input_panel_x","50%"));
  50. options.insert(option("input_panel_y","40%"));
  51. options.insert(option("input_name_x","200"));
  52. options.insert(option("input_name_y","154"));
  53. options.insert(option("input_pass_x","-1")); // default is single inputbox
  54. options.insert(option("input_pass_y","-1"));
  55. options.insert(option("input_font","Verdana:size=11"));
  56. options.insert(option("input_color", "#000000"));
  57. options.insert(option("input_cursor_height","20"));
  58. options.insert(option("input_maxlength_name","20"));
  59. options.insert(option("input_maxlength_passwd","20"));
  60. options.insert(option("input_shadow_xoffset", "0"));
  61. options.insert(option("input_shadow_yoffset", "0"));
  62. options.insert(option("input_shadow_color","#FFFFFF"));
  63. options.insert(option("welcome_font","Verdana:size=14"));
  64. options.insert(option("welcome_color","#FFFFFF"));
  65. options.insert(option("welcome_x","-1"));
  66. options.insert(option("welcome_y","-1"));
  67. options.insert(option("welcome_shadow_xoffset", "0"));
  68. options.insert(option("welcome_shadow_yoffset", "0"));
  69. options.insert(option("welcome_shadow_color","#FFFFFF"));
  70. options.insert(option("intro_msg",""));
  71. options.insert(option("intro_font","Verdana:size=14"));
  72. options.insert(option("intro_color","#FFFFFF"));
  73. options.insert(option("intro_x","-1"));
  74. options.insert(option("intro_y","-1"));
  75. options.insert(option("background_style","stretch"));
  76. options.insert(option("background_color","#CCCCCC"));
  77. options.insert(option("username_font","Verdana:size=12"));
  78. options.insert(option("username_color","#FFFFFF"));
  79. options.insert(option("username_x","-1"));
  80. options.insert(option("username_y","-1"));
  81. options.insert(option("username_msg","Please enter your username"));
  82. options.insert(option("username_shadow_xoffset", "0"));
  83. options.insert(option("username_shadow_yoffset", "0"));
  84. options.insert(option("username_shadow_color","#FFFFFF"));
  85. options.insert(option("password_x","-1"));
  86. options.insert(option("password_y","-1"));
  87. options.insert(option("password_msg","Please enter your password"));
  88. options.insert(option("msg_color","#FFFFFF"));
  89. options.insert(option("msg_font","Verdana:size=16:bold"));
  90. options.insert(option("msg_x","40"));
  91. options.insert(option("msg_y","40"));
  92. options.insert(option("msg_shadow_xoffset", "0"));
  93. options.insert(option("msg_shadow_yoffset", "0"));
  94. options.insert(option("msg_shadow_color","#FFFFFF"));
  95. error = "";
  96. }
  97. Cfg::~Cfg() {
  98. options.clear();
  99. }
  100. /*
  101. * Creates the Cfg object and parses
  102. * known options from the given configfile / themefile
  103. */
  104. bool Cfg::readConf(string configfile) {
  105. int n = -1;
  106. string line, fn(configfile);
  107. map<string,string>::iterator it;
  108. string op;
  109. ifstream cfgfile( fn.c_str() );
  110. if (cfgfile) {
  111. while (getline( cfgfile, line )) {
  112. it = options.begin();
  113. while (it != options.end()) {
  114. op = it->first;
  115. n = line.find(op);
  116. if (n == 0)
  117. options[op] = parseOption(line, op);
  118. it++;
  119. }
  120. }
  121. cfgfile.close();
  122. fillSessionList();
  123. return true;
  124. } else {
  125. error = "Cannot read configuration file: " + configfile;
  126. return false;
  127. }
  128. }
  129. /* Returns the option value, trimmed */
  130. string Cfg::parseOption(string line, string option ) {
  131. return Trim( line.substr(option.size(), line.size() - option.size()));
  132. }
  133. const string& Cfg::getError() const {
  134. return error;
  135. }
  136. string& Cfg::getOption(string option) {
  137. return options[option];
  138. }
  139. /* return a trimmed string */
  140. string Cfg::Trim( const string& s ) {
  141. if ( s.empty() ) {
  142. return s;
  143. }
  144. int pos = 0;
  145. string line = s;
  146. int len = line.length();
  147. while ( pos < len && isspace( line[pos] ) ) {
  148. ++pos;
  149. }
  150. line.erase( 0, pos );
  151. pos = line.length()-1;
  152. while ( pos > -1 && isspace( line[pos] ) ) {
  153. --pos;
  154. }
  155. if ( pos != -1 ) {
  156. line.erase( pos+1 );
  157. }
  158. return line;
  159. }
  160. /* Return the welcome message with replaced vars */
  161. string Cfg::getWelcomeMessage(){
  162. string s = getOption("welcome_msg");
  163. int n = -1;
  164. n = s.find("%host");
  165. if (n >= 0) {
  166. string tmp = s.substr(0, n);
  167. char host[40];
  168. gethostname(host,40);
  169. tmp = tmp + host;
  170. tmp = tmp + s.substr(n+5, s.size() - n);
  171. s = tmp;
  172. }
  173. n = s.find("%domain");
  174. if (n >= 0) {
  175. string tmp = s.substr(0, n);;
  176. char domain[40];
  177. getdomainname(domain,40);
  178. tmp = tmp + domain;
  179. tmp = tmp + s.substr(n+7, s.size() - n);
  180. s = tmp;
  181. }
  182. return s;
  183. }
  184. int Cfg::string2int(const char* string, bool* ok) {
  185. char* err = 0;
  186. int l = (int)strtol(string, &err, 10);
  187. if (ok) {
  188. *ok = (*err == 0);
  189. }
  190. return (*err == 0) ? l : 0;
  191. }
  192. // Get absolute position
  193. int Cfg::absolutepos(const string& position, int max, int width) {
  194. int n = -1;
  195. n = position.find("%");
  196. if (n>0) { // X Position expressed in percentage
  197. int result = (max*string2int(position.substr(0, n).c_str())/100) - (width / 2);
  198. return result < 0 ? 0 : result ;
  199. } else { // Absolute X position
  200. return string2int(position.c_str());
  201. }
  202. }
  203. // split a comma separated string into a vector of strings
  204. void Cfg::split(vector<string>& v, const string& str, char c, bool useEmpty) {
  205. v.clear();
  206. string::const_iterator s = str.begin();
  207. string tmp;
  208. while (true) {
  209. string::const_iterator begin = s;
  210. while (*s != c && s != str.end()) { ++s; }
  211. tmp = string(begin, s);
  212. if (useEmpty || tmp.size() > 0)
  213. v.push_back(tmp);
  214. if (s == str.end()) {
  215. break;
  216. }
  217. if (++s == str.end()) {
  218. if (useEmpty)
  219. v.push_back("");
  220. break;
  221. }
  222. }
  223. }
  224. void Cfg::fillSessionList(){
  225. string strSessionList = getOption("sessions");
  226. string strSessionDir = getOption("sessiondir");
  227. sessions.clear();
  228. if( !strSessionDir.empty() ) {
  229. DIR *pDir = opendir(strSessionDir.c_str());
  230. if (pDir != NULL) {
  231. struct dirent *pDirent = NULL;
  232. while ((pDirent = readdir(pDir)) != NULL) {
  233. string strFile(strSessionDir);
  234. strFile += "/";
  235. strFile += pDirent->d_name;
  236. struct stat oFileStat;
  237. if (stat(strFile.c_str( ), &oFileStat) == 0){
  238. if (S_ISREG(oFileStat.st_mode) &&
  239. access(strFile.c_str(), R_OK | X_OK) == 0){
  240. sessions.push_back(string(pDirent->d_name));
  241. }
  242. }
  243. }
  244. closedir(pDir);
  245. }
  246. }
  247. if (sessions.empty()){
  248. split(sessions, strSessionList, ',', false);
  249. }
  250. }
  251. string Cfg::nextSession(string current) {
  252. if (sessions.size() < 1)
  253. return current;
  254. currentSession = (currentSession + 1) % sessions.size();
  255. return sessions[currentSession];
  256. }