openwrt/package/p910nd/patches/200-p910nd-0.7.patch

   1 --- p910nd-0.7/p910nd.c.orig    2005-09-29 11:31:02.442914400 +0200
   2 +++ p910nd-0.7/p910nd.c 2005-09-29 11:31:49.236800648 +0200
   3 @@ -73,8 +73,7 @@
   4  #else
   5  #define                LOCKFILE        "/var/lock/subsys/p910%cd"
   6  #endif
   7 -#define                PRINTERFILE     "/dev/lp%c"
   8 -#define                LOGOPTS         LOG_ERR
   9 +#define                PRINTERFILE     "/dev/printers/%c"
  10
  11  static char    *progname;
  12  static char    version[] = "p910nd Version 0.7";
  13 @@ -93,9 +92,9 @@
  14         fprintf(stdout, "%s \n", version);
  15  }
  16
  17 -FILE *open_printer(int lpnumber)
  18 +int open_printer(int lpnumber)
  19  {
  20 -       FILE            *f;
  21 +       int             lp;
  22         char            lpname[sizeof(PRINTERFILE)];
  23
  24  #ifdef TESTING
  25 @@ -105,12 +104,16 @@
  26  #endif
  27         if (device == 0)
  28                 device = lpname;
  29 -       if ((f = fopen(device, bidir ? "w+" : "w")) == NULL)
  30 +       if ((lp = open(device, bidir ? O_RDWR : O_WRONLY)) == -1)
  31         {
  32 -               syslog(LOGOPTS, "%s: %m\n", device);
  33 -               exit(1);
  34 +               syslog(LOG_ERR, "%s: %m\n", device);
  35 +
  36 +               /* fallback to /dev/null if device is not available
  37 +                * otherwise windows spooler will screw up
  38 +                */
  39 +               lp = open("/dev/null", bidir ? O_RDWR : O_WRONLY);
  40         }
  41 -       return (f);
  42 +       return (lp);
  43  }
  44
  45  int get_lock(int lpnumber)
  46 @@ -121,7 +124,7 @@
  47         (void)snprintf(lockname, sizeof(lockname), LOCKFILE, lpnumber);
  48         if ((lockfd = open(lockname, O_CREAT|O_RDWR)) < 0)
  49         {
  50 -               syslog(LOGOPTS, "%s: %m\n", lockname);
  51 +               syslog(LOG_ERR, "%s: %m\n", lockname);
  52                 return (0);
  53         }
  54         memset(&lplock, 0, sizeof(lplock));
  55 @@ -129,7 +132,7 @@
  56         lplock.l_pid = getpid();
  57         if (fcntl(lockfd, F_SETLKW, &lplock) < 0)
  58         {
  59 -               syslog(LOGOPTS, "%s: %m\n", lockname);
  60 +               syslog(LOG_ERR, "%s: %m\n", lockname);
  61                 return (0);
  62         }
  63         return (1);
  64 @@ -141,24 +144,36 @@
  65                 (void)close(lockfd);
  66  }
  67
  68 +ssize_t safe_write(int fd, char *buf, size_t count)
  69 +{
  70 +       size_t offset = 0;
  71 +
  72 +       while (offset < count) {
  73 +               ssize_t n = write(fd, buf + offset, count - offset);
  74 +
  75 +               if (n < 0 && errno != EINTR)
  76 +                       return n;
  77 +
  78 +               if (n > 0)
  79 +                       offset += n;
  80 +       }
  81 +
  82 +       return offset;
  83 +}
  84 +
  85  /* Copy network socket to FILE f until EOS */
  86 -int copy_stream(int fd, FILE *f)
  87 +int copy_stream(int fd, int lp)
  88  {
  89 -       int             nread;
  90 +       int             nread, rcvd = 0, sent = 0;
  91         char            buffer[8192];
  92
  93         if (bidir) {
  94 -               FILE    *nf;
  95 -
  96 -               if ((nf = fdopen(fd, "w")) == NULL) {
  97 -                       syslog(LOGOPTS, "fdopen: %m\n");
  98 -               }
  99                 for (;;) {
 100                         fd_set  readfds;
 101                         int result;
 102 -                       int maxfd = fileno(f) > fd ? fileno(f) : fd;
 103 +                       int maxfd = lp > fd ? lp : fd;
 104                         FD_ZERO(&readfds);
 105 -                       FD_SET(fileno(f), &readfds);
 106 +                       FD_SET(lp, &readfds);
 107                         FD_SET(fd, &readfds);
 108                         result = select(maxfd + 1, &readfds, 0, 0, 0);
 109                         if (result < 0)
 110 @@ -169,43 +184,54 @@
 111                                 nread = read(fd, buffer, sizeof(buffer));
 112                                 if (nread <= 0)
 113                                         break;
 114 -                               (void)fwrite(buffer, sizeof(char), nread, f);
 115 +                               if (safe_write(lp, buffer, nread) < 0) {
 116 +                                       syslog(LOG_ERR, "write: %m\n");
 117 +                                       break;
 118 +                               }
 119 +                               rcvd += nread;
 120                         }
 121 -                       if (FD_ISSET(fileno(f), &readfds)) {
 122 -                               nread = read(fileno(f), buffer, sizeof(buffer));
 123 -                               if (nread > 0 && nf != NULL) {
 124 -                                       (void)fwrite(buffer, sizeof(char), nread, nf);
 125 -                                       (void)fflush(nf);
 126 +                       if (FD_ISSET(lp, &readfds)) {
 127 +                               nread = read(lp, buffer, sizeof(buffer));
 128 +                               if (nread > 0) {
 129 +                                       safe_write(fd, buffer, nread);
 130 +                                       sent += nread;
 131                                 }
 132                         }
 133                 }
 134 -               (void)fflush(f);
 135 -               (void)fclose(nf);
 136 +               syslog(LOG_NOTICE, "Finished job: %d bytes received, %d bytes sent\n",
 137 +                       rcvd, sent);
 138                 return (0);
 139         } else {
 140 -               while ((nread = read(fd, buffer, sizeof(buffer))) > 0)
 141 -                       (void)fwrite(buffer, sizeof(char), nread, f);
 142 -               (void)fflush(f);
 143 +               while ((nread = read(fd, buffer, sizeof(buffer))) > 0) {
 144 +                       if (safe_write(lp, buffer, nread) < 0) {
 145 +                               syslog(LOG_ERR, "write: %m\n");
 146 +                               break;
 147 +                       }
 148 +                       rcvd += nread;
 149 +               }
 150 +               syslog(LOG_NOTICE, "Finished job: %d bytes received\n", rcvd);
 151                 return (nread);
 152         }
 153  }
 154
 155  void one_job(int lpnumber)
 156  {
 157 -       FILE            *f;
 158 +       int             lp;
 159         struct sockaddr_in      client;
 160         socklen_t       clientlen = sizeof(client);
 161
 162         if (getpeername(0, (struct sockaddr*) &client, &clientlen) >= 0)
 163 -               syslog(LOGOPTS, "Connection from %s port %hu\n",
 164 +               syslog(LOG_NOTICE, "Connection from %s port %hu\n",
 165                         inet_ntoa(client.sin_addr),
 166                         ntohs(client.sin_port));
 167         if (get_lock(lpnumber) == 0)
 168                 return;
 169 -       f = open_printer(lpnumber);
 170 -       if (copy_stream(0, f) < 0)
 171 -               syslog(LOGOPTS, "copy_stream: %m\n");
 172 -       fclose(f);
 173 +       if ((lp = open_printer(lpnumber)) != -1)
 174 +       {
 175 +               if (copy_stream(0, lp) < 0)
 176 +                       syslog(LOG_ERR, "copy_stream: %m\n");
 177 +               close(lp);
 178 +       }
 179         free_lock();
 180  }
 181
 182 @@ -215,7 +241,7 @@
 183  #ifdef USE_GETPROTOBYNAME
 184         struct protoent *proto;
 185  #endif
 186 -       int             netfd, fd, one = 1;
 187 +       int             netfd, fd, lp, one = 1;
 188         socklen_t       clientlen;
 189         struct sockaddr_in      netaddr, client;
 190         char            pidfilename[sizeof(PIDFILE)];
 191 @@ -225,7 +251,7 @@
 192         switch (fork())
 193         {
 194         case -1:
 195 -               syslog(LOGOPTS, "fork: %m\n");
 196 +               syslog(LOG_ERR, "fork: %m\n");
 197                 exit (1);
 198         case 0:         /* child */
 199                 break;
 200 @@ -236,14 +262,14 @@
 201         resourcelimit.rlim_max = 0;
 202         if (getrlimit(RLIMIT_NOFILE, &resourcelimit) < 0)
 203         {
 204 -               syslog(LOGOPTS, "getrlimit: %m\n");
 205 +               syslog(LOG_ERR, "getrlimit: %m\n");
 206                 exit(1);
 207         }
 208         for (fd = 0; fd < resourcelimit.rlim_max; ++fd)
 209                 (void)close(fd);
 210         if (setsid() < 0)
 211         {
 212 -               syslog(LOGOPTS, "setsid: %m\n");
 213 +               syslog(LOG_ERR, "setsid: %m\n");
 214                 exit(1);
 215         }
 216         (void)chdir("/");
 217 @@ -254,7 +280,7 @@
 218         (void)snprintf(pidfilename, sizeof(pidfilename), PIDFILE, lpnumber);
 219         if ((f = fopen(pidfilename, "w")) == NULL)
 220         {
 221 -               syslog(LOGOPTS, "%s: %m\n", pidfilename);
 222 +               syslog(LOG_ERR, "%s: %m\n", pidfilename);
 223                 exit(1);
 224         }
 225         (void)fprintf(f, "%d\n", getpid());
 226 @@ -262,11 +288,10 @@
 227         if (get_lock(lpnumber) == 0)
 228                 exit(1);
 229  #endif
 230 -       f = open_printer(lpnumber);
 231  #ifdef USE_GETPROTOBYNAME
 232         if ((proto = getprotobyname("tcp")) == NULL)
 233         {
 234 -               syslog(LOGOPTS, "Cannot find protocol for TCP!\n");
 235 +               syslog(LOG_ERR, "Cannot find protocol for TCP!\n");
 236                 exit(1);
 237         }
 238         if ((netfd = socket(AF_INET, SOCK_STREAM, proto->p_proto)) < 0)
 239 @@ -274,12 +299,12 @@
 240         if ((netfd = socket(AF_INET, SOCK_STREAM, IPPROTO_IP)) < 0)
 241  #endif
 242         {
 243 -               syslog(LOGOPTS, "socket: %m\n");
 244 +               syslog(LOG_ERR, "socket: %m\n");
 245                 exit(1);
 246         }
 247         if (setsockopt(netfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)
 248         {
 249 -               syslog(LOGOPTS, "setsocketopt: %m\n");
 250 +               syslog(LOG_ERR, "setsocketopt: %m\n");
 251                 exit(1);
 252         }
 253         netaddr.sin_port = htons(BASEPORT + lpnumber - '0');
 254 @@ -287,12 +312,12 @@
 255         memset(netaddr.sin_zero, 0, sizeof(netaddr.sin_zero));
 256         if (bind(netfd, (struct sockaddr*) &netaddr, sizeof(netaddr)) < 0)
 257         {
 258 -               syslog(LOGOPTS, "bind: %m\n");
 259 +               syslog(LOG_ERR, "bind: %m\n");
 260                 exit(1);
 261         }
 262         if (listen(netfd, 5) < 0)
 263         {
 264 -               syslog(LOGOPTS, "listen: %m\n");
 265 +               syslog(LOG_ERR, "listen: %m\n");
 266                 exit(1);
 267         }
 268         clientlen = sizeof(client);
 269 @@ -302,22 +327,26 @@
 270  #ifdef USE_LIBWRAP
 271                 if (hosts_ctl("p910nd", STRING_UNKNOWN,
 272                         inet_ntoa(client.sin_addr), STRING_UNKNOWN) == 0) {
 273 -                       syslog(LOGOPTS, "Connection from %s port %hd rejected\n",
 274 +                       syslog(LOG_ERR, "Connection from %s port %hu rejected\n",
 275                                 inet_ntoa(client.sin_addr),
 276                                 ntohs(client.sin_port));
 277                         close(fd);
 278                         continue;
 279                 }
 280  #endif
 281 -               syslog(LOGOPTS, "Connection from %s port %hd accepted\n",
 282 +               syslog(LOG_NOTICE, "Connection from %s port %hu accepted\n",
 283                         inet_ntoa(client.sin_addr),
 284                         ntohs(client.sin_port));
 285                 /*write(fd, "Printing", 8);*/
 286 -               if (copy_stream(fd, f) < 0)
 287 -                       syslog(LOGOPTS, "copy_stream: %m\n");
 288 +               if ((lp = open_printer(lpnumber)) != -1)
 289 +               {
 290 +                       if (copy_stream(fd, lp) < 0)
 291 +                               syslog(LOG_ERR, "copy_stream: %m\n");
 292 +                       close(lp);
 293 +               }
 294                 (void)close(fd);
 295         }
 296 -       syslog(LOGOPTS, "accept: %m\n");
 297 +       syslog(LOG_ERR, "accept: %m\n");
 298         free_lock();
 299         exit(1);
 300  }
 301 @@ -338,7 +367,7 @@
 302         if (getsockname(0, (struct sockaddr*) &bind_addr, &ba_len) == 0)
 303                 return (0);             /* under inetd */
 304         if (errno != ENOTSOCK)          /* strange... */
 305 -               syslog(LOGOPTS, "getsockname: %m\n");
 306 +               syslog(LOG_ERR, "getsockname: %m\n");
 307         return (1);
 308  }
 309