src/plugin_xmms/http.c

   1 /*  XMMS - Cross-platform multimedia player
   2  *  Copyright (C) 1998-2000  Peter Alm, Mikael Alm, Olle Hallnas, Thomas Nilsson and 4Front Technologies
   3  *
   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  *  This program 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 this program; if not, write to the Free Software Foundation, Inc.,
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  */
  18 /* modified for FLAC support by Steven Richman (2003) */
  19
  20 #if HAVE_CONFIG_H
  21 #  include <config.h>
  22 #endif
  23
  24 #include <sys/types.h>
  25 #include <sys/socket.h>
  26 #include <sys/time.h>
  27 #include <netinet/in.h>
  28 #include <arpa/inet.h>
  29 #include <netdb.h>
  30 #include <glib.h>
  31 #include <string.h>
  32 #include <fcntl.h>
  33 #include <unistd.h>
  34 #include <errno.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37
  38 #include <pthread.h>
  39
  40 #include <xmms/util.h>
  41 #include <xmms/plugin.h>
  42
  43 #include "FLAC/format.h"
  44 #include "configure.h"
  45 #include "locale_hack.h"
  46 #include "plugin.h"
  47
  48 /* on FreeBSD we get socklen_t from <sys/socket.h> */
  49 #if (!defined HAVE_SOCKLEN_T) && !defined(__FreeBSD__)
  50 typedef unsigned int socklen_t;
  51 #endif
  52
  53 #define min(x,y) ((x)<(y)?(x):(y))
  54 #define min3(x,y,z) (min(x,y)<(z)?min(x,y):(z))
  55 #define min4(x,y,z,w) (min3(x,y,z)<(w)?min3(x,y,z):(w))
  56
  57 static gchar *icy_name = NULL;
  58 static gint icy_metaint = 0;
  59
  60 extern InputPlugin flac_ip;
  61
  62 #undef DEBUG_UDP
  63
  64 /* Static udp channel functions */
  65 static int udp_establish_listener (gint *sock);
  66 static int udp_check_for_data(gint sock);
  67
  68 static char *flac_http_get_title(char *url);
  69
  70 static gboolean prebuffering, going, eof = FALSE;
  71 static gint sock, rd_index, wr_index, buffer_length, prebuffer_length;
  72 static guint64 buffer_read = 0;
  73 static gchar *buffer;
  74 static guint64 offset;
  75 static pthread_t thread;
  76 static GtkWidget *error_dialog = NULL;
  77
  78 static FILE *output_file = NULL;
  79
  80 #define BASE64_LENGTH(len) (4 * (((len) + 2) / 3))
  81
  82 /* Encode the string S of length LENGTH to base64 format and place it
  83    to STORE.  STORE will be 0-terminated, and must point to a writable
  84    buffer of at least 1+BASE64_LENGTH(length) bytes.  */
  85 static void base64_encode (const gchar *s, gchar *store, gint length)
  86 {
  87         /* Conversion table.  */
  88         static gchar tbl[64] = {
  89                 'A','B','C','D','E','F','G','H',
  90                 'I','J','K','L','M','N','O','P',
  91                 'Q','R','S','T','U','V','W','X',
  92                 'Y','Z','a','b','c','d','e','f',
  93                 'g','h','i','j','k','l','m','n',
  94                 'o','p','q','r','s','t','u','v',
  95                 'w','x','y','z','0','1','2','3',
  96                 '4','5','6','7','8','9','+','/'
  97         };
  98         gint i;
  99         guchar *p = (guchar *)store;
 100
 101         /* Transform the 3x8 bits to 4x6 bits, as required by base64.  */
 102         for (i = 0; i < length; i += 3)
 103         {
 104                 *p++ = tbl[s[0] >> 2];
 105                 *p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
 106                 *p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
 107                 *p++ = tbl[s[2] & 0x3f];
 108                 s += 3;
 109         }
 110         /* Pad the result if necessary...  */
 111         if (i == length + 1)
 112                 *(p - 1) = '=';
 113         else if (i == length + 2)
 114                 *(p - 1) = *(p - 2) = '=';
 115         /* ...and zero-terminate it.  */
 116         *p = '\0';
 117 }
 118
 119 /* Create the authentication header contents for the `Basic' scheme.
 120    This is done by encoding the string `USER:PASS' in base64 and
 121    prepending `HEADER: Basic ' to it.  */
 122 static gchar *basic_authentication_encode (const gchar *user, const gchar *passwd, const gchar *header)
 123 {
 124         gchar *t1, *t2, *res;
 125         gint len1 = strlen (user) + 1 + strlen (passwd);
 126         gint len2 = BASE64_LENGTH (len1);
 127
 128         t1 = g_strdup_printf("%s:%s", user, passwd);
 129         t2 = g_malloc0(len2 + 1);
 130         base64_encode (t1, t2, len1);
 131         res = g_strdup_printf("%s: Basic %s\r\n", header, t2);
 132         g_free(t2);
 133         g_free(t1);
 134
 135         return res;
 136 }
 137
 138 static void parse_url(const gchar * url, gchar ** user, gchar ** pass, gchar ** host, int *port, gchar ** filename)
 139 {
 140         gchar *h, *p, *pt, *f, *temp, *ptr;
 141
 142         temp = g_strdup(url);
 143         ptr = temp;
 144
 145         if (!strncasecmp("http://", ptr, 7))
 146                 ptr += 7;
 147         h = strchr(ptr, '@');
 148         f = strchr(ptr, '/');
 149         if (h != NULL && (!f || h < f))
 150         {
 151                 *h = '\0';
 152                 p = strchr(ptr, ':');
 153                 if (p != NULL && p < h)
 154                 {
 155                         *p = '\0';
 156                         p++;
 157                         *pass = g_strdup(p);
 158                 }
 159                 else
 160                         *pass = NULL;
 161                 *user = g_strdup(ptr);
 162                 h++;
 163                 ptr = h;
 164         }
 165         else
 166         {
 167                 *user = NULL;
 168                 *pass = NULL;
 169                 h = ptr;
 170         }
 171         pt = strchr(ptr, ':');
 172         if (pt != NULL && (f == NULL || pt < f))
 173         {
 174                 *pt = '\0';
 175                 *port = atoi(pt + 1);
 176         }
 177         else
 178         {
 179                 if (f)
 180                         *f = '\0';
 181                 *port = 80;
 182         }
 183         *host = g_strdup(h);
 184
 185         if (f)
 186                 *filename = g_strdup(f + 1);
 187         else
 188                 *filename = NULL;
 189         g_free(temp);
 190 }
 191
 192 void flac_http_close(void)
 193 {
 194         going = FALSE;
 195
 196         pthread_join(thread, NULL);
 197         g_free(icy_name);
 198         icy_name = NULL;
 199 }
 200
 201
 202 static gint http_used(void)
 203 {
 204         if (wr_index >= rd_index)
 205                 return wr_index - rd_index;
 206         return buffer_length - (rd_index - wr_index);
 207 }
 208
 209 static gint http_free(void)
 210 {
 211         if (rd_index > wr_index)
 212                 return (rd_index - wr_index) - 1;
 213         return (buffer_length - (wr_index - rd_index)) - 1;
 214 }
 215
 216 static void http_wait_for_data(gint bytes)
 217 {
 218         while ((prebuffering || http_used() < bytes) && !eof && going)
 219                 xmms_usleep(10000);
 220 }
 221
 222 static void show_error_message(gchar *error)
 223 {
 224         if(!error_dialog)
 225         {
 226                 GDK_THREADS_ENTER();
 227                 error_dialog = xmms_show_message(_("Error"), error, _("Ok"), FALSE,
 228                                                  NULL, NULL);
 229                 gtk_signal_connect(GTK_OBJECT(error_dialog),
 230                                    "destroy",
 231                                    GTK_SIGNAL_FUNC(gtk_widget_destroyed),
 232                                    &error_dialog);
 233                 GDK_THREADS_LEAVE();
 234         }
 235 }
 236
 237 int flac_http_read(gpointer data, gint length)
 238 {
 239         gint len, cnt, off = 0, meta_len, meta_off = 0, i;
 240         gchar *meta_data, **tags, *temp, *title;
 241         if (length > buffer_length) {
 242                 length = buffer_length;
 243         }
 244
 245         http_wait_for_data(length);
 246
 247         if (!going)
 248                 return 0;
 249         len = min(http_used(), length);
 250
 251         while (len && http_used())
 252         {
 253                 if ((flac_cfg.stream.cast_title_streaming) && (icy_metaint > 0) && (buffer_read % icy_metaint) == 0 && (buffer_read > 0))
 254                 {
 255                         meta_len = *((guchar *) buffer + rd_index) * 16;
 256                         rd_index = (rd_index + 1) % buffer_length;
 257                         if (meta_len > 0)
 258                         {
 259                                 http_wait_for_data(meta_len);
 260                                 meta_data = g_malloc0(meta_len);
 261                                 if (http_used() >= meta_len)
 262                                 {
 263                                         while (meta_len)
 264                                         {
 265                                                 cnt = min(meta_len, buffer_length - rd_index);
 266                                                 memcpy(meta_data + meta_off, buffer + rd_index, cnt);
 267                                                 rd_index = (rd_index + cnt) % buffer_length;
 268                                                 meta_len -= cnt;
 269                                                 meta_off += cnt;
 270                                         }
 271                                         tags = g_strsplit(meta_data, "';", 0);
 272
 273                                         for (i = 0; tags[i]; i++)
 274                                         {
 275                                                 if (!strncasecmp(tags[i], "StreamTitle=", 12))
 276                                                 {
 277                                                         temp = g_strdup(tags[i] + 13);
 278                                                         title = g_strdup_printf("%s (%s)", temp, icy_name);
 279                                                         set_track_info(title, -1);
 280                                                         g_free(title);
 281                                                         g_free(temp);
 282                                                 }
 283
 284                                         }
 285                                         g_strfreev(tags);
 286
 287                                 }
 288                                 g_free(meta_data);
 289                         }
 290                         if (!http_used())
 291                                 http_wait_for_data(length - off);
 292                         cnt = min3(len, buffer_length - rd_index, http_used());
 293                 }
 294                 else if ((icy_metaint > 0) && (flac_cfg.stream.cast_title_streaming))
 295                         cnt = min4(len, buffer_length - rd_index, http_used(), icy_metaint - (gint) (buffer_read % icy_metaint));
 296                 else
 297                         cnt = min3(len, buffer_length - rd_index, http_used());
 298                 if (output_file)
 299                         fwrite(buffer + rd_index, 1, cnt, output_file);
 300
 301                 memcpy((gchar *)data + off, buffer + rd_index, cnt);
 302                 rd_index = (rd_index + cnt) % buffer_length;
 303                 buffer_read += cnt;
 304                 len -= cnt;
 305                 off += cnt;
 306         }
 307         if (!off) {
 308                 fprintf(stderr, "returning zero\n");
 309         }
 310         return off;
 311 }
 312
 313 static gboolean http_check_for_data(void)
 314 {
 315
 316         fd_set set;
 317         struct timeval tv;
 318         gint ret;
 319
 320         tv.tv_sec = 0;
 321         tv.tv_usec = 20000;
 322         FD_ZERO(&set);
 323         FD_SET(sock, &set);
 324         ret = select(sock + 1, &set, NULL, NULL, &tv);
 325         if (ret > 0)
 326                 return TRUE;
 327         return FALSE;
 328 }
 329
 330 gint flac_http_read_line(gchar * buf, gint size)
 331 {
 332         gint i = 0;
 333
 334         while (going && i < size - 1)
 335         {
 336                 if (http_check_for_data())
 337                 {
 338                         if (read(sock, buf + i, 1) <= 0)
 339                                 return -1;
 340                         if (buf[i] == '\n')
 341                                 break;
 342                         if (buf[i] != '\r')
 343                                 i++;
 344                 }
 345         }
 346         if (!going)
 347                 return -1;
 348         buf[i] = '\0';
 349         return i;
 350 }
 351
 352 /* returns the file descriptor of the socket, or -1 on error */
 353 static int http_connect (gchar *url_, gboolean head, guint64 offset)
 354 {
 355         gchar line[1024], *user, *pass, *host, *filename,
 356              *status, *url, *temp, *file;
 357         gchar *chost;
 358         gint cnt, error, port, cport;
 359         socklen_t err_len;
 360         gboolean redirect;
 361         int udp_sock = 0;
 362         fd_set set;
 363         struct hostent *hp;
 364         struct sockaddr_in address;
 365         struct timeval tv;
 366
 367         url = g_strdup (url_);
 368
 369         do
 370         {
 371                 redirect=FALSE;
 372
 373                 g_strstrip(url);
 374
 375                 parse_url(url, &user, &pass, &host, &port, &filename);
 376
 377                 if ((!filename || !*filename) && url[strlen(url) - 1] != '/')
 378                         temp = g_strconcat(url, "/", NULL);
 379                 else
 380                         temp = g_strdup(url);
 381                 g_free(url);
 382                 url = temp;
 383
 384                 chost = flac_cfg.stream.use_proxy ? flac_cfg.stream.proxy_host : host;
 385                 cport = flac_cfg.stream.use_proxy ? flac_cfg.stream.proxy_port : port;
 386
 387                 sock = socket(AF_INET, SOCK_STREAM, 0);
 388                 fcntl(sock, F_SETFL, O_NONBLOCK);
 389                 address.sin_family = AF_INET;
 390
 391                 status = g_strdup_printf(_("LOOKING UP %s"), chost);
 392                 flac_ip.set_info_text(status);
 393                 g_free(status);
 394
 395                 if (!(hp = gethostbyname(chost)))
 396                 {
 397                         status = g_strdup_printf(_("Couldn't look up host %s"), chost);
 398                         show_error_message(status);
 399                         g_free(status);
 400
 401                         flac_ip.set_info_text(NULL);
 402                         eof = TRUE;
 403                 }
 404
 405                 if (!eof)
 406                 {
 407                         memcpy(&address.sin_addr.s_addr, *(hp->h_addr_list), sizeof (address.sin_addr.s_addr));
 408                         address.sin_port = (gint) g_htons(cport);
 409
 410                         status = g_strdup_printf(_("CONNECTING TO %s:%d"), chost, cport);
 411                         flac_ip.set_info_text(status);
 412                         g_free(status);
 413                         if (connect(sock, (struct sockaddr *) &address, sizeof (struct sockaddr_in)) == -1)
 414                         {
 415                                 if (errno != EINPROGRESS)
 416                                 {
 417                                         status = g_strdup_printf(_("Couldn't connect to host %s"), chost);
 418                                         show_error_message(status);
 419                                         g_free(status);
 420
 421                                         flac_ip.set_info_text(NULL);
 422                                         eof = TRUE;
 423                                 }
 424                         }
 425                         while (going)
 426                         {
 427                                 tv.tv_sec = 0;
 428                                 tv.tv_usec = 10000;
 429                                 FD_ZERO(&set);
 430                                 FD_SET(sock, &set);
 431                                 if (select(sock + 1, NULL, &set, NULL, &tv) > 0)
 432                                 {
 433                                         err_len = sizeof (error);
 434                                         getsockopt(sock, SOL_SOCKET, SO_ERROR, &error, &err_len);
 435                                         if (error)
 436                                         {
 437                                                 status = g_strdup_printf(_("Couldn't connect to host %s"),
 438                                                                          chost);
 439                                                 show_error_message(status);
 440                                                 g_free(status);
 441
 442                                                 flac_ip.set_info_text(NULL);
 443                                                 eof = TRUE;
 444
 445                                         }
 446                                         break;
 447                                 }
 448                         }
 449                         if (!eof)
 450                         {
 451                                 gchar *auth = NULL, *proxy_auth = NULL;
 452                                 gchar udpspace[30];
 453                                 int udp_port;
 454
 455                                 if (flac_cfg.stream.use_udp_channel)
 456                                 {
 457                                         udp_port = udp_establish_listener (&udp_sock);
 458                                         if (udp_port > 0)
 459                                                 sprintf (udpspace, "x-audiocast-udpport: %d\r\n", udp_port);
 460                                         else
 461                                                 udp_sock = 0;
 462                                 }
 463
 464                                 if(user && pass)
 465                                         auth = basic_authentication_encode(user, pass, "Authorization");
 466
 467                                 if (flac_cfg.stream.use_proxy)
 468                                 {
 469                                         file = g_strdup(url);
 470                                         if(flac_cfg.stream.proxy_use_auth && flac_cfg.stream.proxy_user && flac_cfg.stream.proxy_pass)
 471                                         {
 472                                                 proxy_auth = basic_authentication_encode(flac_cfg.stream.proxy_user,
 473                                                                                          flac_cfg.stream.proxy_pass,
 474                                                                                          "Proxy-Authorization");
 475                                         }
 476                                 }
 477                                 else
 478                                         file = g_strconcat("/", filename, NULL);
 479
 480                                 temp = g_strdup_printf("GET %s HTTP/1.0\r\n"
 481                                                        "Host: %s\r\n"
 482                                                        "User-Agent: %s/%s\r\n"
 483                                                        "%s%s%s%s",
 484                                                        file, host, "Reference FLAC Player", FLAC__VERSION_STRING,
 485                                                        proxy_auth ? proxy_auth : "", auth ? auth : "",
 486                                                        flac_cfg.stream.cast_title_streaming ?  "Icy-MetaData:1\r\n" : "",
 487                                                        flac_cfg.stream.use_udp_channel ? udpspace : "");
 488                                 if (offset && !head) {
 489                                         gchar *temp_dead = temp;
 490                                         temp = g_strdup_printf ("%sRange: %" PRIu64 "-\r\n", temp, offset);
 491                                         fputs (temp, stderr);
 492                                         g_free (temp_dead);
 493                                 }
 494
 495                                 g_free(file);
 496                                 if(proxy_auth)
 497                                         g_free(proxy_auth);
 498                                 if(auth)
 499                                         g_free(auth);
 500                                 write(sock, temp, strlen(temp));
 501                                 write(sock, "\r\n", 2);
 502                                 g_free(temp);
 503                                 flac_ip.set_info_text(_("CONNECTED: WAITING FOR REPLY"));
 504                                 while (going && !eof)
 505                                   {
 506                                         if (http_check_for_data())
 507                                         {
 508                                                 if (flac_http_read_line(line, 1024))
 509                                                 {
 510                                                         status = strchr(line, ' ');
 511                                                         if (status)
 512                                                         {
 513                                                                 if (status[1] == '2')
 514                                                                         break;
 515                                                                 else if(status[1] == '3' && status[2] == '0' && status[3] == '2')
 516                                                                 {
 517                                                                         while(going)
 518                                                                         {
 519                                                                                 if(http_check_for_data())
 520                                                                                 {
 521                                                                                         if((cnt = flac_http_read_line(line, 1024)) != -1)
 522                                                                                         {
 523                                                                                                 if(!cnt)
 524                                                                                                         break;
 525                                                                                                 if(!strncmp(line, "Location:", 9))
 526                                                                                                 {
 527                                                                                                         g_free(url);
 528                                                                                                         url = g_strdup(line+10);
 529                                                                                                 }
 530                                                                                         }
 531                                                                                         else
 532                                                                                         {
 533                                                                                                 eof=TRUE;
 534                                                                                                 flac_ip.set_info_text(NULL);
 535                                                                                                 break;
 536                                                                                         }
 537                                                                                 }
 538                                                                         }
 539                                                                         redirect=TRUE;
 540                                                                         break;
 541                                                                 }
 542                                                                 else
 543                                                                 {
 544                                                                         status = g_strdup_printf(_("Couldn't connect to host %s\nServer reported: %s"), chost, status);
 545                                                                         show_error_message(status);
 546                                                                         g_free(status);
 547                                                                         break;
 548                                                                 }
 549                                                         }
 550                                                 }
 551                                                 else
 552                                                 {
 553                                                         eof = TRUE;
 554                                                         flac_ip.set_info_text(NULL);
 555                                                 }
 556                                         }
 557                                 }
 558
 559                                 while (going && !redirect)
 560                                 {
 561                                         if (http_check_for_data())
 562                                         {
 563                                                 if ((cnt = flac_http_read_line(line, 1024)) != -1)
 564                                                 {
 565                                                         if (!cnt)
 566                                                                 break;
 567                                                         if (!strncmp(line, "icy-name:", 9))
 568                                                                 icy_name = g_strdup(line + 9);
 569                                                         else if (!strncmp(line, "x-audiocast-name:", 17))
 570                                                                 icy_name = g_strdup(line + 17);
 571                                                         if (!strncmp(line, "icy-metaint:", 12))
 572                                                                 icy_metaint = atoi(line + 12);
 573                                                         if (!strncmp(line, "x-audiocast-udpport:", 20)) {
 574 #ifdef DEBUG_UDP
 575                                                                 fprintf (stderr, "Server wants udp messages on port %d\n", atoi (line + 20));
 576 #endif
 577                                                                 /*udp_serverport = atoi (line + 20);*/
 578                                                         }
 579
 580                                                 }
 581                                                 else
 582                                                 {
 583                                                         eof = TRUE;
 584                                                         flac_ip.set_info_text(NULL);
 585                                                         break;
 586                                                 }
 587                                         }
 588                                 }
 589                         }
 590                 }
 591
 592                 if(redirect)
 593                 {
 594                         if (output_file)
 595                         {
 596                                 fclose(output_file);
 597                                 output_file = NULL;
 598                         }
 599                         close(sock);
 600                 }
 601
 602                 g_free(user);
 603                 g_free(pass);
 604                 g_free(host);
 605                 g_free(filename);
 606         } while(redirect);
 607
 608         g_free(url);
 609         return eof ? -1 : sock;
 610 }
 611
 612 static void *http_buffer_loop(void *arg)
 613 {
 614         gchar *status, *url, *temp, *file;
 615         gint cnt, written;
 616         int udp_sock = 0;
 617
 618         url = (gchar *) arg;
 619         sock = http_connect (url, false, offset);
 620
 621         if (sock >= 0 && flac_cfg.stream.save_http_stream) {
 622                 gchar *output_name;
 623                 file = flac_http_get_title(url);
 624                 output_name = file;
 625                 if (!strncasecmp(output_name, "http://", 7))
 626                         output_name += 7;
 627                 temp = strrchr(output_name, '.');
 628                 if (temp && (!strcasecmp(temp, ".fla") || !strcasecmp(temp, ".flac")))
 629                         *temp = '\0';
 630
 631                 while ((temp = strchr(output_name, '/')))
 632                         *temp = '_';
 633                 output_name = g_strdup_printf("%s/%s.flac", flac_cfg.stream.save_http_path, output_name);
 634
 635                 g_free(file);
 636
 637                 output_file = fopen(output_name, "wb");
 638                 g_free(output_name);
 639         }
 640
 641         while (going)
 642         {
 643
 644                 if (!http_used() && !flac_ip.output->buffer_playing())
 645                         prebuffering = TRUE;
 646                 if (http_free() > 0 && !eof)
 647                 {
 648                         if (http_check_for_data())
 649                         {
 650                                 cnt = min(http_free(), buffer_length - wr_index);
 651                                 if (cnt > 1024)
 652                                         cnt = 1024;
 653                                 written = read(sock, buffer + wr_index, cnt);
 654                                 if (written <= 0)
 655                                 {
 656                                         eof = TRUE;
 657                                         if (prebuffering)
 658                                         {
 659                                                 prebuffering = FALSE;
 660
 661                                                 flac_ip.set_info_text(NULL);
 662                                         }
 663
 664                                 }
 665                                 else
 666                                         wr_index = (wr_index + written) % buffer_length;
 667                         }
 668
 669                         if (prebuffering)
 670                         {
 671                                 if (http_used() > prebuffer_length)
 672                                 {
 673                                         prebuffering = FALSE;
 674                                         flac_ip.set_info_text(NULL);
 675                                 }
 676                                 else
 677                                 {
 678                                         status = g_strdup_printf(_("PRE-BUFFERING: %dKB/%dKB"), http_used() / 1024, prebuffer_length / 1024);
 679                                         flac_ip.set_info_text(status);
 680                                         g_free(status);
 681                                 }
 682
 683                         }
 684                 }
 685                 else
 686                         xmms_usleep(10000);
 687
 688                 if (flac_cfg.stream.use_udp_channel && udp_sock != 0)
 689                         if (udp_check_for_data(udp_sock) < 0)
 690                         {
 691                                 close(udp_sock);
 692                                 udp_sock = 0;
 693                         }
 694         }
 695         if (output_file)
 696         {
 697                 fclose(output_file);
 698                 output_file = NULL;
 699         }
 700         if (sock >= 0) {
 701                 close(sock);
 702         }
 703         if (udp_sock != 0)
 704                 close(udp_sock);
 705
 706         g_free(buffer);
 707         g_free(url);
 708
 709         pthread_exit(NULL);
 710         return NULL; /* avoid compiler warning */
 711 }
 712
 713 int flac_http_open(const gchar * _url, guint64 _offset)
 714 {
 715         gchar *url;
 716
 717         url = g_strdup(_url);
 718
 719         rd_index = 0;
 720         wr_index = 0;
 721         buffer_length = flac_cfg.stream.http_buffer_size * 1024;
 722         prebuffer_length = (buffer_length * flac_cfg.stream.http_prebuffer) / 100;
 723         buffer_read = 0;
 724         icy_metaint = 0;
 725         prebuffering = TRUE;
 726         going = TRUE;
 727         eof = FALSE;
 728         buffer = g_malloc(buffer_length);
 729         offset = _offset;
 730
 731         pthread_create(&thread, NULL, http_buffer_loop, url);
 732
 733         return 0;
 734 }
 735
 736 char *flac_http_get_title(char *url)
 737 {
 738         if (icy_name)
 739                 return g_strdup(icy_name);
 740         if (g_basename(url) && strlen(g_basename(url)) > 0)
 741                 return g_strdup(g_basename(url));
 742         return g_strdup(url);
 743 }
 744
 745 /* Start UDP Channel specific stuff */
 746
 747 /* Find a good local udp port and bind udp_sock to it, return the port */
 748 static int udp_establish_listener(int *sock)
 749 {
 750         struct sockaddr_in sin;
 751         socklen_t sinlen = sizeof (struct sockaddr_in);
 752
 753 #ifdef DEBUG_UDP
 754         fprintf (stderr,"Establishing udp listener\n");
 755 #endif
 756
 757         if ((*sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
 758         {
 759                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 760                       "udp_establish_listener(): unable to create socket");
 761                 return -1;
 762         }
 763
 764         memset(&sin, 0, sinlen);
 765         sin.sin_family = AF_INET;
 766         sin.sin_addr.s_addr = g_htonl(INADDR_ANY);
 767
 768         if (bind(*sock, (struct sockaddr *)&sin, sinlen) < 0)
 769         {
 770                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 771                       "udp_establish_listener():  Failed to bind socket to localhost: %s", strerror(errno));
 772                 close(*sock);
 773                 return -1;
 774         }
 775         if (fcntl(*sock, F_SETFL, O_NONBLOCK) < 0)
 776         {
 777                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 778                       "udp_establish_listener():  Failed to set flags: %s", strerror(errno));
 779                 close(*sock);
 780                 return -1;
 781         }
 782
 783         memset(&sin, 0, sinlen);
 784         if (getsockname(*sock, (struct sockaddr *)&sin, &sinlen) < 0)
 785         {
 786                 g_log(NULL, G_LOG_LEVEL_CRITICAL,
 787                       "udp_establish_listener():  Failed to retrieve socket info: %s", strerror(errno));
 788                 close(*sock);
 789                 return -1;
 790         }
 791
 792 #ifdef DEBUG_UDP
 793         fprintf (stderr,"Listening on local %s:%d\n", inet_ntoa(sin.sin_addr), g_ntohs(sin.sin_port));
 794 #endif
 795
 796         return g_ntohs(sin.sin_port);
 797 }
 798
 799 static int udp_check_for_data(int sock)
 800 {
 801         char buf[1025], **lines;
 802         char *valptr;
 803         gchar *title;
 804         gint len, i;
 805         struct sockaddr_in from;
 806         socklen_t fromlen;
 807
 808         fromlen = sizeof(struct sockaddr_in);
 809
 810         if ((len = recvfrom(sock, buf, 1024, 0, (struct sockaddr *)&from, &fromlen)) < 0)
 811         {
 812                 if (errno != EAGAIN)
 813                 {
 814                         g_log(NULL, G_LOG_LEVEL_CRITICAL,
 815                               "udp_read_data(): Error reading from socket: %s", strerror(errno));
 816                         return -1;
 817                 }
 818                 return 0;
 819         }
 820         buf[len] = '\0';
 821 #ifdef DEBUG_UDP
 822         fprintf (stderr,"Received: [%s]\n", buf);
 823 #endif
 824         lines = g_strsplit(buf, "\n", 0);
 825         if (!lines)
 826                 return 0;
 827
 828         for (i = 0; lines[i]; i++)
 829         {
 830                 while ((lines[i][strlen(lines[i]) - 1] == '\n') ||
 831                        (lines[i][strlen(lines[i]) - 1] == '\r'))
 832                         lines[i][strlen(lines[i]) - 1] = '\0';
 833
 834                 valptr = strchr(lines[i], ':');
 835
 836                 if (!valptr)
 837                         continue;
 838                 else
 839                         valptr++;
 840
 841                 g_strstrip(valptr);
 842                 if (!strlen(valptr))
 843                         continue;
 844
 845                 if (strstr(lines[i], "x-audiocast-streamtitle") != NULL)
 846                 {
 847                         title = g_strdup_printf ("%s (%s)", valptr, icy_name);
 848                         if (going)
 849                                 set_track_info(title, -1);
 850                         g_free (title);
 851                 }
 852
 853 #if 0
 854                 else if (strstr(lines[i], "x-audiocast-streamlength") != NULL)
 855                 {
 856                         if (atoi(valptr) != -1)
 857                                 set_track_info(NULL, atoi(valptr));
 858                 }
 859 #endif
 860
 861                 else if (strstr(lines[i], "x-audiocast-streammsg") != NULL)
 862                 {
 863                         /* set_track_info(title, -1); */
 864 /*                      xmms_show_message(_("Message"), valptr, _("Ok"), */
 865 /*                                        FALSE, NULL, NULL); */
 866                         g_message("Stream_message: %s", valptr);
 867                 }
 868
 869 #if 0
 870                 /* Use this to direct your webbrowser.. yeah right.. */
 871                 else if (strstr(lines[i], "x-audiocast-streamurl") != NULL)
 872                 {
 873                         if (lasturl && g_strcmp (valptr, lasturl))
 874                         {
 875                                 c_message (stderr, "Song URL: %s\n", valptr);
 876                                 g_free (lasturl);
 877                                 lasturl = g_strdup (valptr);
 878                         }
 879                 }
 880 #endif
 881                 else if (strstr(lines[i], "x-audiocast-udpseqnr:") != NULL)
 882                 {
 883                         gchar obuf[60];
 884                         sprintf(obuf, "x-audiocast-ack: %ld \r\n", atol(valptr));
 885                         if (sendto(sock, obuf, strlen(obuf), 0, (struct sockaddr *) &from, fromlen) < 0)
 886                         {
 887                                 g_log(NULL, G_LOG_LEVEL_WARNING,
 888                                       "udp_check_for_data(): Unable to send ack to server: %s", strerror(errno));
 889                         }
 890 #ifdef DEBUG_UDP
 891                         else
 892                                 fprintf(stderr,"Sent ack: %s", obuf);
 893                         fprintf (stderr,"Remote: %s:%d\n", inet_ntoa(from.sin_addr), g_ntohs(from.sin_port));
 894 #endif
 895                 }
 896         }
 897         g_strfreev(lines);
 898         return 0;
 899 }