libmenu/menu_console.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer 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  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include "config.h"
  20 #include "mp_msg.h"
  21
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <ctype.h>
  26 #include <sys/time.h>
  27 #include <sys/types.h>
  28 #ifndef __MINGW32__
  29 #include <sys/wait.h>
  30 #endif
  31 #include <unistd.h>
  32 #include <errno.h>
  33
  34 #include "libmpcodecs/img_format.h"
  35 #include "libmpcodecs/mp_image.h"
  36
  37 #include "m_struct.h"
  38 #include "m_option.h"
  39 #include "menu.h"
  40
  41 #include "libvo/font_load.h"
  42 #include "osdep/keycodes.h"
  43 #include "input/input.h"
  44 #include "osdep/timer.h"
  45
  46 typedef struct history_st history_t;
  47
  48 struct history_st {
  49   char* buffer;
  50   int size;
  51   history_t* next;
  52   history_t* prev;
  53 };
  54
  55 struct menu_priv_s {
  56   char** lines; // Our buffer
  57   int last_line;
  58   int num_lines;
  59   int add_line;
  60   unsigned int hide_ts;
  61   unsigned int show_ts;
  62   pid_t child; // Child process if we are running a shell cmd
  63   int child_fd[3]; // The 3 default fd
  64   char* prompt;
  65   //int max_lines; // Max number of lines with the last mpi
  66   history_t* history;
  67   history_t* cur_history;
  68   int history_size;
  69
  70   char* mp_prompt;
  71   char* child_prompt;
  72   int buf_lines; // Buffer size (in line)
  73   int height; // Display size in %
  74   int minb;
  75   int vspace;
  76   int bg,bg_alpha;
  77   unsigned int hide_time;
  78   unsigned int show_time;
  79   int history_max;
  80   int raw_child;
  81 };
  82
  83 static struct menu_priv_s cfg_dflt = {
  84   NULL,
  85   0,
  86   0,
  87   1,
  88   0,
  89   0,
  90   0,
  91   { 0 , 0, 0 },
  92   NULL,
  93   NULL,
  94   NULL,
  95   0,
  96
  97   "# ",
  98   "$ ",
  99   50, // lines
 100   33, // %
 101   3,
 102   3,
 103   0x80,0x40,
 104   500,
 105   500,
 106   10,
 107   0
 108 };
 109
 110 #define ST_OFF(m) M_ST_OFF(struct menu_priv_s,m)
 111
 112 static const m_option_t cfg_fields[] = {
 113   { "prompt", ST_OFF(mp_prompt), CONF_TYPE_STRING, M_OPT_MIN, 1, 0, NULL },
 114   { "child-prompt", ST_OFF(child_prompt), CONF_TYPE_STRING, M_OPT_MIN, 1, 0, NULL },
 115   { "buffer-lines", ST_OFF(buf_lines), CONF_TYPE_INT, M_OPT_MIN, 5, 0, NULL },
 116   { "height", ST_OFF(height), CONF_TYPE_INT, M_OPT_RANGE, 1, 100, NULL },
 117   { "minbor", ST_OFF(minb), CONF_TYPE_INT, M_OPT_MIN, 0, 0, NULL },
 118   { "vspace", ST_OFF(vspace), CONF_TYPE_INT, M_OPT_MIN, 0, 0, NULL },
 119   { "bg", ST_OFF(bg), CONF_TYPE_INT, M_OPT_RANGE, -1, 255, NULL },
 120   { "bg-alpha", ST_OFF(bg_alpha), CONF_TYPE_INT, M_OPT_RANGE, 0, 255, NULL },
 121   { "show-time",ST_OFF(show_time), CONF_TYPE_INT, M_OPT_MIN, 0, 0, NULL },
 122   { "hide-time",ST_OFF(hide_time), CONF_TYPE_INT, M_OPT_MIN, 0, 0, NULL },
 123   { "history-size",ST_OFF(history_max), CONF_TYPE_INT, M_OPT_MIN, 1, 0, NULL },
 124   { "raw-child", ST_OFF(raw_child), CONF_TYPE_FLAG, 0, 0, 1, NULL },
 125   { NULL, NULL, NULL, 0,0,0,NULL }
 126 };
 127
 128 #define mpriv (menu->priv)
 129
 130 static void check_child(menu_t* menu);
 131
 132 static void add_line(struct menu_priv_s* priv, char* l) {
 133   char* eol = strchr(l,'\n');
 134
 135   if(eol) {
 136     if(eol != l) {
 137       eol[0] = '\0';
 138       add_line(priv,l);
 139     }
 140     if(eol[1]) add_line(priv,eol+1);
 141     return;
 142   }
 143
 144   if(priv->num_lines >= priv->buf_lines)
 145     free(priv->lines[priv->last_line]);
 146   else
 147     priv->num_lines++;
 148
 149   priv->lines[priv->last_line] = strdup(l);
 150   priv->last_line = (priv->last_line + 1) % priv->buf_lines;
 151   priv->add_line = 1;
 152 }
 153
 154 static void add_string(struct menu_priv_s* priv, char* l) {
 155   char* eol = strchr(l,'\n');
 156   int ll =  priv->last_line > 0 ? priv->last_line - 1 : priv->buf_lines-1;
 157
 158   if(priv->num_lines <= 0 || priv->add_line || eol == l) {
 159     add_line(priv,l);
 160     priv->add_line = 0;
 161     return;
 162   }
 163
 164   if(eol) {
 165     eol[0] = '\0';
 166     add_string(priv,l);
 167     if(eol[1]) {
 168       add_line(priv,eol+1);
 169       priv->add_line = 0;
 170     } else
 171       priv->add_line = 1;
 172     return;
 173   }
 174   priv->lines[ll] = realloc(priv->lines[ll],strlen(priv->lines[ll]) + strlen(l) + 1);
 175   if ( priv->lines[ll] != NULL )
 176   {
 177     strcat(priv->lines[ll],l);
 178   }
 179 }
 180
 181 static void draw(menu_t* menu, mp_image_t* mpi) {
 182   int h = mpi->h*mpriv->height/100;
 183   int w = mpi->w - 2* mpriv->minb;
 184   int x = mpriv->minb, y;
 185   int lw,lh,i, ll;
 186
 187   if(mpriv->child) check_child(menu);
 188
 189   ll = mpriv->last_line - 1;
 190
 191   if(mpriv->hide_ts) {
 192     unsigned int t = GetTimerMS() - mpriv->hide_ts;
 193     if(t >= mpriv->hide_time) {
 194       mpriv->hide_ts = 0;
 195       menu->show = 0;
 196       return;
 197     }
 198     h = mpi->h*(mpriv->height - (mpriv->height * t /mpriv->hide_time))/100;
 199   } else if(mpriv->show_time && mpriv->show_ts == 0) {
 200     mpriv->show_ts = GetTimerMS();
 201     return;
 202   } else if(mpriv->show_ts > 0) {
 203     unsigned int t = GetTimerMS() - mpriv->show_ts;
 204     if(t > mpriv->show_time)
 205       mpriv->show_ts = -1;
 206     else
 207       h = mpi->h*(mpriv->height * t /mpriv->hide_time)/100;
 208   }
 209
 210   y = h -  mpriv->vspace;
 211
 212   if(x < 0 || y < 0 || w <= 0 || h <= 0 )
 213     return;
 214
 215   if(mpriv->bg >= 0)
 216     menu_draw_box(mpi,mpriv->bg,mpriv->bg_alpha,0,0,mpi->w,h);
 217
 218   if(!mpriv->child || !mpriv->raw_child){
 219     char input[strlen(mpriv->cur_history->buffer) + strlen(mpriv->prompt) + 1];
 220     sprintf(input,"%s%s",mpriv->prompt,mpriv->cur_history->buffer);
 221     menu_text_size(input,w,mpriv->vspace,1,&lw,&lh);
 222     menu_draw_text_full(mpi,input,x,y,w,h,mpriv->vspace,1,
 223                         MENU_TEXT_BOT|MENU_TEXT_LEFT,
 224                         MENU_TEXT_BOT|MENU_TEXT_LEFT);
 225     y -= lh + mpriv->vspace;
 226   }
 227
 228
 229   for( i = 0 ; y > mpriv->minb && i < mpriv->num_lines ; i++){
 230     int c = (ll - i) >= 0 ? ll - i : mpriv->buf_lines + ll - i;
 231     menu_text_size(mpriv->lines[c],w,mpriv->vspace,1,&lw,&lh);
 232     menu_draw_text_full(mpi,mpriv->lines[c],x,y,w,h,mpriv->vspace,1,
 233                         MENU_TEXT_BOT|MENU_TEXT_LEFT,
 234                         MENU_TEXT_BOT|MENU_TEXT_LEFT);
 235     y -= lh + mpriv->vspace;
 236   }
 237   return;
 238 }
 239
 240 static void check_child(menu_t* menu) {
 241 #ifndef __MINGW32__
 242   fd_set rfd;
 243   struct timeval tv;
 244   int max_fd = mpriv->child_fd[2] > mpriv->child_fd[1] ? mpriv->child_fd[2] :
 245     mpriv->child_fd[1];
 246   int i,r,child_status,w;
 247   char buffer[256];
 248
 249   if(!mpriv->child) return;
 250
 251   memset(&tv,0,sizeof(struct timeval));
 252   FD_ZERO(&rfd);
 253   FD_SET(mpriv->child_fd[1],&rfd);
 254   FD_SET(mpriv->child_fd[2],&rfd);
 255
 256   r = select(max_fd+1,&rfd, NULL, NULL, &tv);
 257   if(r == 0) {
 258     r = waitpid(mpriv->child,&child_status,WNOHANG);
 259     if(r < 0){
 260       if(errno==ECHILD){  ///exiting children get handled in mplayer.c
 261         for(i = 0 ; i < 3 ; i++)
 262           close(mpriv->child_fd[i]);
 263         mpriv->child = 0;
 264         mpriv->prompt = mpriv->mp_prompt;
 265         //add_line(mpriv,"Child process exited");
 266       }
 267       else mp_tmsg(MSGT_GLOBAL,MSGL_ERR,"[MENU] Waitpid error: %s.\n",strerror(errno));
 268     }
 269   } else if(r < 0) {
 270     mp_tmsg(MSGT_GLOBAL,MSGL_ERR,"[MENU] Select error.\n");
 271     return;
 272   }
 273
 274   w = 0;
 275   for(i = 1 ; i < 3 ; i++) {
 276     if(FD_ISSET(mpriv->child_fd[i],&rfd)){
 277       if(w) mpriv->add_line = 1;
 278       r = read(mpriv->child_fd[i],buffer,255);
 279       if(r < 0)
 280         mp_tmsg(MSGT_GLOBAL,MSGL_ERR,"[MENU] Read error on child's file descriptor: %s.\n", i == 1 ? "stdout":"stderr");
 281       else if(r>0) {
 282         buffer[r] = '\0';
 283         add_string(mpriv,buffer);
 284       }
 285       w = 1;
 286     }
 287   }
 288 #endif
 289
 290 }
 291
 292 #define close_pipe(pipe) close(pipe[0]); close(pipe[1])
 293
 294 static int run_shell_cmd(menu_t* menu, char* cmd) {
 295 #ifndef __MINGW32__
 296   int in[2],out[2],err[2];
 297
 298   mp_tmsg(MSGT_GLOBAL,MSGL_INFO,"[MENU] Console run: %s ...\n",cmd);
 299   if(mpriv->child) {
 300     mp_tmsg(MSGT_GLOBAL,MSGL_ERR,"[MENU] A child is already running.\n");
 301     return 0;
 302   }
 303
 304   pipe(in);
 305   pipe(out);
 306   pipe(err);
 307
 308   mpriv->child = fork();
 309   if(mpriv->child < 0) {
 310     mp_tmsg(MSGT_GLOBAL,MSGL_ERR,"[MENU] Fork failed !!!\n");
 311     close_pipe(in);
 312     close_pipe(out);
 313     close_pipe(err);
 314     return 0;
 315   }
 316   if(!mpriv->child) { // Chlid process
 317     int err_fd = dup(2);
 318     FILE* errf = fdopen(err_fd,"w");
 319     // Bind the std fd to our pipes
 320     dup2(in[0],0);
 321     dup2(out[1],1);
 322     dup2(err[1],2);
 323     execl("/bin/sh","sh","-c",cmd,(void*)NULL);
 324     fprintf(errf,"exec failed : %s\n",strerror(errno));
 325     exit(1);
 326   }
 327   // MPlayer
 328   mpriv->child_fd[0] = in[1];
 329   mpriv->child_fd[1] = out[0];
 330   mpriv->child_fd[2] = err[0];
 331   mpriv->prompt = mpriv->child_prompt;
 332   //add_line(mpriv,"Child process started");
 333 #endif
 334   return 1;
 335 }
 336
 337 static void enter_cmd(menu_t* menu) {
 338   history_t* h;
 339   char input[strlen(mpriv->cur_history->buffer) + strlen(mpriv->prompt) + 1];
 340
 341   sprintf(input,"%s%s",mpriv->prompt,mpriv->cur_history->buffer);
 342   add_line(mpriv,input);
 343
 344   if(mpriv->history == mpriv->cur_history) {
 345     if(mpriv->history_size >= mpriv->history_max) {
 346       history_t* i;
 347       for(i = mpriv->history ; i->prev ; i = i->prev)
 348         /**/;
 349       i->next->prev = NULL;
 350       free(i->buffer);
 351       free(i);
 352     } else
 353       mpriv->history_size++;
 354     h = calloc(1,sizeof(history_t));
 355     h->size = 255;
 356     h->buffer = calloc(h->size,1);
 357     h->prev = mpriv->history;
 358     mpriv->history->next = h;
 359     mpriv->history = h;
 360   } else
 361     mpriv->history->buffer[0] = '\0';
 362
 363   mpriv->cur_history = mpriv->history;
 364   //mpriv->input = mpriv->cur_history->buffer;
 365 }
 366
 367 static void read_cmd(menu_t* menu,int cmd) {
 368   switch(cmd) {
 369   case MENU_CMD_CANCEL:
 370     if(mpriv->hide_time)
 371       mpriv->hide_ts = GetTimerMS();
 372     else
 373       menu->show = 0;
 374     mpriv->show_ts = 0;
 375     return;
 376   case MENU_CMD_OK: {
 377     mp_cmd_t* c;
 378     if(mpriv->child) {
 379       char *str = mpriv->cur_history->buffer;
 380       int l = strlen(str);
 381       while(l > 0) {
 382         int w = write(mpriv->child_fd[0],str,l);
 383         if(w < 0) {
 384           mp_tmsg(MSGT_GLOBAL,MSGL_ERR,"[MENU] write error\n");
 385           break;
 386         }
 387         l -= w;
 388         str += w;
 389       }
 390       if(write(mpriv->child_fd[0],"\n",1) < 0)
 391         mp_tmsg(MSGT_GLOBAL,MSGL_ERR,"[MENU] write error\n");
 392       enter_cmd(menu);
 393       return;
 394     }
 395     c = mp_input_parse_cmd(mpriv->cur_history->buffer);
 396     enter_cmd(menu);
 397     if(!c)
 398       add_line(mpriv,"Invalid command try help");
 399     else {
 400       switch(c->id) {
 401       case MP_CMD_CHELP:
 402         add_line(mpriv,"MPlayer console 0.01");
 403         add_line(mpriv,"TODO: meaningful help message ;)");
 404         add_line(mpriv,"Enter any slave command");
 405         add_line(mpriv,"exit close this console");
 406         break;
 407       case MP_CMD_CEXIT:
 408         menu->show = 0;
 409         menu->cl = 1;
 410         break;
 411       case MP_CMD_CHIDE:
 412         if(mpriv->hide_time)
 413           mpriv->hide_ts = GetTimerMS();
 414         else
 415           menu->show = 0;
 416         mpriv->show_ts = 0;
 417         break;
 418       case MP_CMD_RUN:
 419         run_shell_cmd(menu,c->args[0].v.s);
 420         break;
 421       default: // Send the other commands to mplayer
 422           mp_input_queue_cmd(menu->input_ctx, c);
 423       }
 424     }
 425     return;
 426   }
 427   case MENU_CMD_UP:
 428     if(mpriv->cur_history->prev)
 429       mpriv->cur_history = mpriv->cur_history->prev;
 430     break;
 431   case MENU_CMD_DOWN:
 432     if(mpriv->cur_history->next)
 433       mpriv->cur_history = mpriv->cur_history->next;
 434     break;
 435   }
 436 }
 437
 438 static int read_key(menu_t* menu,int c) {
 439   if(mpriv->child && mpriv->raw_child) {
 440     write(mpriv->child_fd[0],&c,sizeof(int));
 441     return 1;
 442   }
 443
 444   if (c == KEY_DELETE || c == KEY_BS) {
 445     unsigned int i = strlen(mpriv->cur_history->buffer);
 446     if(i > 0)
 447       mpriv->cur_history->buffer[i-1] = '\0';
 448     return 1;
 449   }
 450   if (menu_dflt_read_key(menu, c))
 451     return 1;
 452
 453   if(isascii(c)) {
 454     int l = strlen(mpriv->cur_history->buffer);
 455     if(l >= mpriv->cur_history->size) {
 456       mpriv->cur_history->size += 255;
 457       mpriv->cur_history->buffer = realloc(mpriv->cur_history,mpriv->cur_history->size);
 458     }
 459     mpriv->cur_history->buffer[l] = (char)c;
 460     mpriv->cur_history->buffer[l+1] = '\0';
 461     return 1;
 462   }
 463   return 0;
 464 }
 465
 466
 467 static int openMenu(menu_t* menu, char* args) {
 468
 469
 470   menu->draw = draw;
 471   menu->read_cmd = read_cmd;
 472   menu->read_key = read_key;
 473
 474   mpriv->lines = calloc(mpriv->buf_lines,sizeof(char*));
 475   mpriv->prompt = mpriv->mp_prompt;
 476   mpriv->cur_history = mpriv->history = calloc(1,sizeof(history_t));
 477   mpriv->cur_history->buffer = calloc(255,1);
 478   mpriv->cur_history->size = 255;
 479
 480   if(args)
 481     add_line(mpriv,args);
 482
 483   return 1;
 484 }
 485
 486 const menu_info_t menu_info_console = {
 487   "MPlayer console",
 488   "console",
 489   "Albeu",
 490   "",
 491   {
 492     "console_cfg",
 493     sizeof(struct menu_priv_s),
 494     &cfg_dflt,
 495     cfg_fields
 496   },
 497   openMenu,
 498 };