mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-11 14:06:16 +02:00
202b240315
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@2000 3c298f89-4303-0410-b956-a3cf2f4a3e73
310 lines
7.7 KiB
Diff
310 lines
7.7 KiB
Diff
--- p910nd-0.7/p910nd.c.orig 2005-09-29 11:31:02.442914400 +0200
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+++ p910nd-0.7/p910nd.c 2005-09-29 11:31:49.236800648 +0200
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@@ -73,8 +73,7 @@
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#else
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#define LOCKFILE "/var/lock/subsys/p910%cd"
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#endif
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-#define PRINTERFILE "/dev/lp%c"
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-#define LOGOPTS LOG_ERR
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+#define PRINTERFILE "/dev/printers/%c"
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static char *progname;
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static char version[] = "p910nd Version 0.7";
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@@ -93,9 +92,9 @@
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fprintf(stdout, "%s \n", version);
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}
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-FILE *open_printer(int lpnumber)
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+int open_printer(int lpnumber)
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{
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- FILE *f;
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+ int lp;
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char lpname[sizeof(PRINTERFILE)];
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#ifdef TESTING
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@@ -105,12 +104,16 @@
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#endif
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if (device == 0)
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device = lpname;
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- if ((f = fopen(device, bidir ? "w+" : "w")) == NULL)
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+ if ((lp = open(device, bidir ? O_RDWR : O_WRONLY)) == -1)
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{
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- syslog(LOGOPTS, "%s: %m\n", device);
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- exit(1);
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+ syslog(LOG_ERR, "%s: %m\n", device);
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+
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+ /* fallback to /dev/null if device is not available
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+ * otherwise windows spooler will screw up
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+ */
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+ lp = open("/dev/null", bidir ? O_RDWR : O_WRONLY);
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}
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- return (f);
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+ return (lp);
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}
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int get_lock(int lpnumber)
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@@ -121,7 +124,7 @@
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(void)snprintf(lockname, sizeof(lockname), LOCKFILE, lpnumber);
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if ((lockfd = open(lockname, O_CREAT|O_RDWR)) < 0)
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{
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- syslog(LOGOPTS, "%s: %m\n", lockname);
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+ syslog(LOG_ERR, "%s: %m\n", lockname);
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return (0);
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}
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memset(&lplock, 0, sizeof(lplock));
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@@ -129,7 +132,7 @@
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lplock.l_pid = getpid();
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if (fcntl(lockfd, F_SETLKW, &lplock) < 0)
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{
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- syslog(LOGOPTS, "%s: %m\n", lockname);
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+ syslog(LOG_ERR, "%s: %m\n", lockname);
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return (0);
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}
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return (1);
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@@ -141,24 +144,36 @@
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(void)close(lockfd);
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}
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+ssize_t safe_write(int fd, char *buf, size_t count)
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+{
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+ size_t offset = 0;
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+
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+ while (offset < count) {
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+ ssize_t n = write(fd, buf + offset, count - offset);
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+
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+ if (n < 0 && errno != EINTR)
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+ return n;
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+
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+ if (n > 0)
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+ offset += n;
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+ }
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+
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+ return offset;
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+}
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+
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/* Copy network socket to FILE f until EOS */
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-int copy_stream(int fd, FILE *f)
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+int copy_stream(int fd, int lp)
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{
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- int nread;
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+ int nread, rcvd = 0, sent = 0;
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char buffer[8192];
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if (bidir) {
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- FILE *nf;
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-
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- if ((nf = fdopen(fd, "w")) == NULL) {
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- syslog(LOGOPTS, "fdopen: %m\n");
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- }
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for (;;) {
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fd_set readfds;
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int result;
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- int maxfd = fileno(f) > fd ? fileno(f) : fd;
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+ int maxfd = lp > fd ? lp : fd;
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FD_ZERO(&readfds);
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- FD_SET(fileno(f), &readfds);
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+ FD_SET(lp, &readfds);
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FD_SET(fd, &readfds);
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result = select(maxfd + 1, &readfds, 0, 0, 0);
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if (result < 0)
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@@ -169,43 +184,54 @@
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nread = read(fd, buffer, sizeof(buffer));
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if (nread <= 0)
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break;
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- (void)fwrite(buffer, sizeof(char), nread, f);
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+ if (safe_write(lp, buffer, nread) < 0) {
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+ syslog(LOG_ERR, "write: %m\n");
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+ break;
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+ }
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+ rcvd += nread;
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}
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- if (FD_ISSET(fileno(f), &readfds)) {
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- nread = read(fileno(f), buffer, sizeof(buffer));
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- if (nread > 0 && nf != NULL) {
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- (void)fwrite(buffer, sizeof(char), nread, nf);
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- (void)fflush(nf);
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+ if (FD_ISSET(lp, &readfds)) {
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+ nread = read(lp, buffer, sizeof(buffer));
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+ if (nread > 0) {
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+ safe_write(fd, buffer, nread);
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+ sent += nread;
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}
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}
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}
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- (void)fflush(f);
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- (void)fclose(nf);
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+ syslog(LOG_NOTICE, "Finished job: %d bytes received, %d bytes sent\n",
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+ rcvd, sent);
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return (0);
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} else {
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- while ((nread = read(fd, buffer, sizeof(buffer))) > 0)
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- (void)fwrite(buffer, sizeof(char), nread, f);
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- (void)fflush(f);
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+ while ((nread = read(fd, buffer, sizeof(buffer))) > 0) {
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+ if (safe_write(lp, buffer, nread) < 0) {
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+ syslog(LOG_ERR, "write: %m\n");
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+ break;
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+ }
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+ rcvd += nread;
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+ }
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+ syslog(LOG_NOTICE, "Finished job: %d bytes received\n", rcvd);
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return (nread);
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}
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}
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void one_job(int lpnumber)
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{
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- FILE *f;
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+ int lp;
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struct sockaddr_in client;
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socklen_t clientlen = sizeof(client);
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if (getpeername(0, (struct sockaddr*) &client, &clientlen) >= 0)
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- syslog(LOGOPTS, "Connection from %s port %hu\n",
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+ syslog(LOG_NOTICE, "Connection from %s port %hu\n",
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inet_ntoa(client.sin_addr),
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ntohs(client.sin_port));
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if (get_lock(lpnumber) == 0)
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return;
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- f = open_printer(lpnumber);
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- if (copy_stream(0, f) < 0)
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- syslog(LOGOPTS, "copy_stream: %m\n");
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- fclose(f);
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+ if ((lp = open_printer(lpnumber)) != -1)
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+ {
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+ if (copy_stream(0, lp) < 0)
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+ syslog(LOG_ERR, "copy_stream: %m\n");
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+ close(lp);
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+ }
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free_lock();
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}
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@@ -215,7 +241,7 @@
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#ifdef USE_GETPROTOBYNAME
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struct protoent *proto;
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#endif
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- int netfd, fd, one = 1;
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+ int netfd, fd, lp, one = 1;
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socklen_t clientlen;
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struct sockaddr_in netaddr, client;
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char pidfilename[sizeof(PIDFILE)];
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@@ -225,7 +251,7 @@
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switch (fork())
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{
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case -1:
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- syslog(LOGOPTS, "fork: %m\n");
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+ syslog(LOG_ERR, "fork: %m\n");
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exit (1);
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case 0: /* child */
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break;
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@@ -236,14 +262,14 @@
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resourcelimit.rlim_max = 0;
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if (getrlimit(RLIMIT_NOFILE, &resourcelimit) < 0)
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{
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- syslog(LOGOPTS, "getrlimit: %m\n");
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+ syslog(LOG_ERR, "getrlimit: %m\n");
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exit(1);
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}
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for (fd = 0; fd < resourcelimit.rlim_max; ++fd)
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(void)close(fd);
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if (setsid() < 0)
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{
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- syslog(LOGOPTS, "setsid: %m\n");
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+ syslog(LOG_ERR, "setsid: %m\n");
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exit(1);
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}
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(void)chdir("/");
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@@ -254,7 +280,7 @@
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(void)snprintf(pidfilename, sizeof(pidfilename), PIDFILE, lpnumber);
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if ((f = fopen(pidfilename, "w")) == NULL)
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{
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- syslog(LOGOPTS, "%s: %m\n", pidfilename);
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+ syslog(LOG_ERR, "%s: %m\n", pidfilename);
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exit(1);
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}
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(void)fprintf(f, "%d\n", getpid());
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@@ -262,11 +288,10 @@
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if (get_lock(lpnumber) == 0)
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exit(1);
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#endif
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- f = open_printer(lpnumber);
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#ifdef USE_GETPROTOBYNAME
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if ((proto = getprotobyname("tcp")) == NULL)
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{
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- syslog(LOGOPTS, "Cannot find protocol for TCP!\n");
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+ syslog(LOG_ERR, "Cannot find protocol for TCP!\n");
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exit(1);
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}
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if ((netfd = socket(AF_INET, SOCK_STREAM, proto->p_proto)) < 0)
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@@ -274,12 +299,12 @@
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if ((netfd = socket(AF_INET, SOCK_STREAM, IPPROTO_IP)) < 0)
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#endif
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{
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- syslog(LOGOPTS, "socket: %m\n");
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+ syslog(LOG_ERR, "socket: %m\n");
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exit(1);
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}
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if (setsockopt(netfd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)
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{
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- syslog(LOGOPTS, "setsocketopt: %m\n");
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+ syslog(LOG_ERR, "setsocketopt: %m\n");
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exit(1);
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}
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netaddr.sin_port = htons(BASEPORT + lpnumber - '0');
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@@ -287,12 +312,12 @@
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memset(netaddr.sin_zero, 0, sizeof(netaddr.sin_zero));
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if (bind(netfd, (struct sockaddr*) &netaddr, sizeof(netaddr)) < 0)
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{
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- syslog(LOGOPTS, "bind: %m\n");
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+ syslog(LOG_ERR, "bind: %m\n");
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exit(1);
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}
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if (listen(netfd, 5) < 0)
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{
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- syslog(LOGOPTS, "listen: %m\n");
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+ syslog(LOG_ERR, "listen: %m\n");
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exit(1);
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}
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clientlen = sizeof(client);
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@@ -302,22 +327,26 @@
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#ifdef USE_LIBWRAP
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if (hosts_ctl("p910nd", STRING_UNKNOWN,
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inet_ntoa(client.sin_addr), STRING_UNKNOWN) == 0) {
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- syslog(LOGOPTS, "Connection from %s port %hd rejected\n",
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+ syslog(LOG_ERR, "Connection from %s port %hu rejected\n",
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inet_ntoa(client.sin_addr),
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ntohs(client.sin_port));
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close(fd);
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continue;
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}
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#endif
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- syslog(LOGOPTS, "Connection from %s port %hd accepted\n",
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+ syslog(LOG_NOTICE, "Connection from %s port %hu accepted\n",
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inet_ntoa(client.sin_addr),
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ntohs(client.sin_port));
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/*write(fd, "Printing", 8);*/
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- if (copy_stream(fd, f) < 0)
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- syslog(LOGOPTS, "copy_stream: %m\n");
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+ if ((lp = open_printer(lpnumber)) != -1)
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+ {
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+ if (copy_stream(fd, lp) < 0)
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+ syslog(LOG_ERR, "copy_stream: %m\n");
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+ close(lp);
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+ }
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(void)close(fd);
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}
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- syslog(LOGOPTS, "accept: %m\n");
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+ syslog(LOG_ERR, "accept: %m\n");
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free_lock();
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exit(1);
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}
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@@ -338,7 +367,7 @@
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if (getsockname(0, (struct sockaddr*) &bind_addr, &ba_len) == 0)
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return (0); /* under inetd */
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if (errno != ENOTSOCK) /* strange... */
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- syslog(LOGOPTS, "getsockname: %m\n");
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+ syslog(LOG_ERR, "getsockname: %m\n");
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return (1);
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}
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