stream/stream_smb.c

   1
   2 #include "config.h"
   3
   4 #include <libsmbclient.h>
   5 #include <unistd.h>
   6
   7 #include "mp_msg.h"
   8 #include "stream.h"
   9 #include "help_mp.h"
  10 #include "m_option.h"
  11 #include "m_struct.h"
  12
  13 static struct stream_priv_s {
  14 } stream_priv_dflts = {
  15 };
  16
  17 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  18 // URL definition
  19 static const m_option_t stream_opts_fields[] = {
  20   { NULL, NULL, 0, 0, 0, 0,  NULL }
  21 };
  22
  23 static const struct m_struct_st stream_opts = {
  24   "smb",
  25   sizeof(struct stream_priv_s),
  26   &stream_priv_dflts,
  27   stream_opts_fields
  28 };
  29
  30 static char smb_password[15];
  31 static char smb_username[15];
  32
  33 static void smb_auth_fn(const char *server, const char *share,
  34              char *workgroup, int wgmaxlen, char *username, int unmaxlen,
  35              char *password, int pwmaxlen)
  36 {
  37   char temp[128];
  38
  39   strcpy(temp, "LAN");
  40   if (temp[strlen(temp) - 1] == 0x0a)
  41     temp[strlen(temp) - 1] = 0x00;
  42
  43   if (temp[0]) strncpy(workgroup, temp, wgmaxlen - 1);
  44
  45   strcpy(temp, smb_username);
  46   if (temp[strlen(temp) - 1] == 0x0a)
  47     temp[strlen(temp) - 1] = 0x00;
  48
  49   if (temp[0]) strncpy(username, temp, unmaxlen - 1);
  50
  51   strcpy(temp, smb_password);
  52   if (temp[strlen(temp) - 1] == 0x0a)
  53     temp[strlen(temp) - 1] = 0x00;
  54
  55    if (temp[0]) strncpy(password, temp, pwmaxlen - 1);
  56 }
  57
  58 static int control(stream_t *s, int cmd, void *arg) {
  59   switch(cmd) {
  60     case STREAM_CTRL_GET_SIZE: {
  61       off_t size = smbc_lseek(s->fd,0,SEEK_END);
  62       smbc_lseek(s->fd,s->pos,SEEK_SET);
  63       if(size != (off_t)-1) {
  64         *((off_t*)arg) = size;
  65         return 1;
  66       }
  67     }
  68   }
  69   return STREAM_UNSUPPORTED;
  70 }
  71
  72 static int seek(stream_t *s,off_t newpos) {
  73   s->pos = newpos;
  74   if(smbc_lseek(s->fd,s->pos,SEEK_SET)<0) {
  75     s->eof=1;
  76     return 0;
  77   }
  78   return 1;
  79 }
  80
  81 static int fill_buffer(stream_t *s, char* buffer, int max_len){
  82   int r = smbc_read(s->fd,buffer,max_len);
  83   return (r <= 0) ? -1 : r;
  84 }
  85
  86 static int write_buffer(stream_t *s, char* buffer, int len) {
  87   int r = smbc_write(s->fd,buffer,len);
  88   return (r <= 0) ? -1 : r;
  89 }
  90
  91 static void close_f(stream_t *s){
  92   smbc_close(s->fd);
  93 }
  94
  95 static int open_f (stream_t *stream, int mode, void *opts, int* file_format) {
  96   struct stream_priv_s *p = (struct stream_priv_s*)opts;
  97   char *filename;
  98   mode_t m = 0;
  99   off_t len;
 100   int fd, err;
 101
 102   filename = stream->url;
 103
 104   if(mode == STREAM_READ)
 105     m = O_RDONLY;
 106   else if (mode == STREAM_WRITE) //who's gonna do that ?
 107     m = O_RDWR|O_CREAT|O_TRUNC;
 108   else {
 109     mp_msg(MSGT_OPEN, MSGL_ERR, "[smb] Unknown open mode %d\n", mode);
 110     m_struct_free (&stream_opts, opts);
 111     return STREAM_UNSUPPORTED;
 112   }
 113
 114   if(!filename) {
 115     mp_msg(MSGT_OPEN,MSGL_ERR, "[smb] Bad url\n");
 116     m_struct_free(&stream_opts, opts);
 117     return STREAM_ERROR;
 118   }
 119
 120   err = smbc_init(smb_auth_fn, 1);
 121   if (err < 0) {
 122     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_SMBInitError,err);
 123     m_struct_free(&stream_opts, opts);
 124     return STREAM_ERROR;
 125   }
 126
 127   fd = smbc_open(filename, m,0644);
 128   if (fd < 0) {
 129     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_SMBFileNotFound, filename);
 130     m_struct_free(&stream_opts, opts);
 131     return STREAM_ERROR;
 132   }
 133
 134   stream->flags = mode;
 135   len = 0;
 136   if(mode == STREAM_READ) {
 137     len = smbc_lseek(fd,0,SEEK_END);
 138     smbc_lseek (fd, 0, SEEK_SET);
 139   }
 140   if(len > 0 || mode == STREAM_WRITE) {
 141     stream->flags |= STREAM_SEEK;
 142     stream->seek = seek;
 143     if(mode == STREAM_READ) stream->end_pos = len;
 144   }
 145   stream->type = STREAMTYPE_SMB;
 146   stream->fd = fd;
 147   stream->fill_buffer = fill_buffer;
 148   stream->write_buffer = write_buffer;
 149   stream->close = close_f;
 150   stream->control = control;
 151
 152   m_struct_free(&stream_opts, opts);
 153   return STREAM_OK;
 154 }
 155
 156 const stream_info_t stream_info_smb = {
 157   "Server Message Block",
 158   "smb",
 159   "M. Tourne",
 160   "based on the code from 'a bulgarian' (one says)",
 161   open_f,
 162   {"smb", NULL},
 163   &stream_opts,
 164   0 //Url is an option string
 165 };