stream/stream_smb.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
  21 #include <libsmbclient.h>
  22 #include <unistd.h>
  23
  24 #include "mp_msg.h"
  25 #include "stream.h"
  26 #include "m_option.h"
  27 #include "m_struct.h"
  28
  29 static struct stream_priv_s {
  30 } stream_priv_dflts = {
  31 };
  32
  33 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  34 // URL definition
  35 static const m_option_t stream_opts_fields[] = {
  36   { NULL, NULL, 0, 0, 0, 0,  NULL }
  37 };
  38
  39 static const struct m_struct_st stream_opts = {
  40   "smb",
  41   sizeof(struct stream_priv_s),
  42   &stream_priv_dflts,
  43   stream_opts_fields
  44 };
  45
  46 static char smb_password[15];
  47 static char smb_username[15];
  48
  49 static void smb_auth_fn(const char *server, const char *share,
  50              char *workgroup, int wgmaxlen, char *username, int unmaxlen,
  51              char *password, int pwmaxlen)
  52 {
  53   char temp[128];
  54
  55   strcpy(temp, "LAN");
  56   if (temp[strlen(temp) - 1] == 0x0a)
  57     temp[strlen(temp) - 1] = 0x00;
  58
  59   if (temp[0]) strncpy(workgroup, temp, wgmaxlen - 1);
  60
  61   strcpy(temp, smb_username);
  62   if (temp[strlen(temp) - 1] == 0x0a)
  63     temp[strlen(temp) - 1] = 0x00;
  64
  65   if (temp[0]) strncpy(username, temp, unmaxlen - 1);
  66
  67   strcpy(temp, smb_password);
  68   if (temp[strlen(temp) - 1] == 0x0a)
  69     temp[strlen(temp) - 1] = 0x00;
  70
  71    if (temp[0]) strncpy(password, temp, pwmaxlen - 1);
  72 }
  73
  74 static int control(stream_t *s, int cmd, void *arg) {
  75   switch(cmd) {
  76     case STREAM_CTRL_GET_SIZE: {
  77       off_t size = smbc_lseek(s->fd,0,SEEK_END);
  78       smbc_lseek(s->fd,s->pos,SEEK_SET);
  79       if(size != (off_t)-1) {
  80         *((off_t*)arg) = size;
  81         return 1;
  82       }
  83     }
  84   }
  85   return STREAM_UNSUPPORTED;
  86 }
  87
  88 static int seek(stream_t *s,off_t newpos) {
  89   s->pos = newpos;
  90   if(smbc_lseek(s->fd,s->pos,SEEK_SET)<0) {
  91     s->eof=1;
  92     return 0;
  93   }
  94   return 1;
  95 }
  96
  97 static int fill_buffer(stream_t *s, char* buffer, int max_len){
  98   int r = smbc_read(s->fd,buffer,max_len);
  99   return (r <= 0) ? -1 : r;
 100 }
 101
 102 static int write_buffer(stream_t *s, char* buffer, int len) {
 103   int r;
 104   int wr = 0;
 105   while (wr < len) {
 106     r = smbc_write(s->fd,buffer,len);
 107     if (r <= 0)
 108       return -1;
 109     wr += r;
 110     buffer += r;
 111   }
 112   return len;
 113 }
 114
 115 static void close_f(stream_t *s){
 116   smbc_close(s->fd);
 117 }
 118
 119 static int open_f (stream_t *stream, int mode, void *opts, int* file_format) {
 120   char *filename;
 121   mode_t m = 0;
 122   off_t len;
 123   int fd, err;
 124
 125   filename = stream->url;
 126
 127   if(mode == STREAM_READ)
 128     m = O_RDONLY;
 129   else if (mode == STREAM_WRITE) //who's gonna do that ?
 130     m = O_RDWR|O_CREAT|O_TRUNC;
 131   else {
 132     mp_msg(MSGT_OPEN, MSGL_ERR, "[smb] Unknown open mode %d\n", mode);
 133     m_struct_free (&stream_opts, opts);
 134     return STREAM_UNSUPPORTED;
 135   }
 136
 137   if(!filename) {
 138     mp_msg(MSGT_OPEN,MSGL_ERR, "[smb] Bad url\n");
 139     m_struct_free(&stream_opts, opts);
 140     return STREAM_ERROR;
 141   }
 142
 143   err = smbc_init(smb_auth_fn, 1);
 144   if (err < 0) {
 145     mp_tmsg(MSGT_OPEN,MSGL_ERR,"Cannot init the libsmbclient library: %d\n",err);
 146     m_struct_free(&stream_opts, opts);
 147     return STREAM_ERROR;
 148   }
 149
 150   fd = smbc_open(filename, m,0644);
 151   if (fd < 0) {
 152     mp_tmsg(MSGT_OPEN,MSGL_ERR,"Could not open from LAN: '%s'\n", filename);
 153     m_struct_free(&stream_opts, opts);
 154     return STREAM_ERROR;
 155   }
 156
 157   stream->flags = mode;
 158   len = 0;
 159   if(mode == STREAM_READ) {
 160     len = smbc_lseek(fd,0,SEEK_END);
 161     smbc_lseek (fd, 0, SEEK_SET);
 162   }
 163   if(len > 0 || mode == STREAM_WRITE) {
 164     stream->flags |= MP_STREAM_SEEK;
 165     stream->seek = seek;
 166     if(mode == STREAM_READ) stream->end_pos = len;
 167   }
 168   stream->type = STREAMTYPE_SMB;
 169   stream->fd = fd;
 170   stream->fill_buffer = fill_buffer;
 171   stream->write_buffer = write_buffer;
 172   stream->close = close_f;
 173   stream->control = control;
 174
 175   m_struct_free(&stream_opts, opts);
 176   return STREAM_OK;
 177 }
 178
 179 const stream_info_t stream_info_smb = {
 180   "Server Message Block",
 181   "smb",
 182   "M. Tourne",
 183   "based on the code from 'a bulgarian' (one says)",
 184   open_f,
 185   {"smb", NULL},
 186   &stream_opts,
 187   0 //Url is an option string
 188 };