lpr: removed stdio; added "job received" message in verbose mode.
diff --git a/printutils/lpr.c b/printutils/lpr.c
index 913da6f..153e6ab 100644
--- a/printutils/lpr.c
+++ b/printutils/lpr.c
@@ -17,20 +17,18 @@
* LPD returns binary 0 on success.
* Otherwise it returns error message.
*/
-static void get_response_or_say_and_die(const char *errmsg)
+static void get_response_or_say_and_die(int fd, const char *errmsg)
{
ssize_t sz;
char buf[128];
- fflush(stdout);
-
buf[0] = ' ';
- sz = safe_read(STDOUT_FILENO, buf, 1);
+ sz = safe_read(fd, buf, 1);
if ('\0' != buf[0]) {
// request has failed
// try to make sure last char is '\n', but do not add
// superfluous one
- sz = full_read(STDOUT_FILENO, buf + 1, 126);
+ sz = full_read(fd, buf + 1, 126);
bb_error_msg("error while %s%s", errmsg,
(sz > 0 ? ". Server said:" : ""));
if (sz > 0) {
@@ -70,7 +68,7 @@
const char *user = bb_getpwuid(NULL, -1, getuid());
unsigned job;
unsigned opts;
- int old_stdout, fd;
+ int fd;
// parse options
// TODO: set opt_complementary: s,d,f are mutually exclusive
@@ -102,9 +100,6 @@
// do connect
fd = create_and_connect_stream_or_die(server, 515);
- // play with descriptors to save space: fdprintf > printf
- old_stdout = dup(STDOUT_FILENO);
- xmove_fd(fd, STDOUT_FILENO);
//
// LPQ ------------------------
@@ -117,9 +112,9 @@
goto command;
// delete job(s)
} else if (opts & LPQ_DELETE) {
- printf("\x5" "%s %s", queue, user);
+ fdprintf(fd, "\x5" "%s %s", queue, user);
while (*argv) {
- printf(" %s", *argv++);
+ fdprintf(fd, " %s", *argv++);
}
bb_putchar('\n');
// dump current jobs status
@@ -129,9 +124,8 @@
} else {
cmd = (opts & LPQ_SHORT_FMT) ? 3 : 4;
command:
- printf("%c" "%s\n", cmd, queue);
- fflush(stdout);
- bb_copyfd_eof(STDOUT_FILENO, old_stdout);
+ fdprintf(fd, "%c" "%s\n", cmd, queue);
+ bb_copyfd_eof(fd, STDOUT_FILENO);
}
return EXIT_SUCCESS;
@@ -144,19 +138,18 @@
bb_error_msg("connected to server");
job = getpid() % 1000;
- // TODO: when do finally we invent char *xgethostname()?!!
- hostname = xzalloc(MAXHOSTNAMELEN+1);
- gethostname(hostname, MAXHOSTNAMELEN);
+ hostname = safe_gethostname();
// no files given on command line? -> use stdin
if (!*argv)
*--argv = (char *)"-";
- printf("\x2" "%s\n", queue);
- get_response_or_say_and_die("setting queue");
+ fdprintf(fd, "\x2" "%s\n", queue);
+ get_response_or_say_and_die(fd, "setting queue");
// process files
do {
+ int dfd;
struct stat st;
char *c;
char *remote_filename;
@@ -165,14 +158,14 @@
// if data file is stdin, we need to dump it first
if (LONE_DASH(*argv)) {
strcpy(tempfile, "/tmp/lprXXXXXX");
- fd = mkstemp(tempfile);
- if (fd < 0)
+ dfd = mkstemp(tempfile);
+ if (dfd < 0)
bb_perror_msg_and_die("mkstemp");
- bb_copyfd_eof(STDIN_FILENO, fd);
- xlseek(fd, 0, SEEK_SET);
+ bb_copyfd_eof(STDIN_FILENO, dfd);
+ xlseek(dfd, 0, SEEK_SET);
*argv = (char*)bb_msg_standard_input;
} else {
- fd = xopen(*argv, O_RDONLY);
+ dfd = xopen(*argv, O_RDONLY);
}
/* "The name ... should start with ASCII "cfA",
@@ -215,24 +208,23 @@
* an indication that the file being sent is complete.
* A second level of acknowledgement processing
* must occur at this point." */
- printf("\x2" "%u c%s\n" "%s" "%c",
+ fdprintf(fd, "\x2" "%u c%s\n" "%s" "%c",
(unsigned)strlen(controlfile),
remote_filename, controlfile, '\0');
- get_response_or_say_and_die("sending control file");
+ get_response_or_say_and_die(fd, "sending control file");
// send data file, with name "dfaXXX"
if (opts & LPR_V)
bb_error_msg("sending data file");
st.st_size = 0; /* paranoia: fstat may theoretically fail */
- fstat(fd, &st);
- printf("\x3" "%"OFF_FMT"u d%s\n", st.st_size, remote_filename);
- fflush(stdout);
- if (bb_copyfd_size(fd, STDOUT_FILENO, st.st_size) != st.st_size) {
+ fstat(dfd, &st);
+ fdprintf(fd, "\x3" "%"OFF_FMT"u d%s\n", st.st_size, remote_filename);
+ if (bb_copyfd_size(dfd, fd, st.st_size) != st.st_size) {
// We're screwed. We sent less bytes than we advertised.
bb_error_msg_and_die("local file changed size?!");
}
- bb_putchar('\0');
- get_response_or_say_and_die("sending data file");
+ write(fd, "", 1); // send ACK
+ get_response_or_say_and_die(fd, "sending data file");
// delete temporary file if we dumped stdin
if (*argv == (char*)bb_msg_standard_input)
@@ -243,6 +235,10 @@
free(remote_filename);
free(controlfile);
+ // say job accepted
+ if (opts & LPR_V)
+ bb_error_msg("job accepted");
+
// next, please!
job = (job + 1) % 1000;
} while (*++argv);