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lpr: document options better

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This commit is contained in:
Denis Vlasenko 2008-02-22 23:21:31 +00:00
parent 32b2a9fd6a
commit 86620756d2
1 changed files with 17 additions and 17 deletions
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34
printutils/lpr.c
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@ -53,32 +53,32 @@ int lpr_main(int argc, char *argv[])
const char *jobtitle;
const char *hostname;
const char *jobclass;
char *logname;
char *username;
int pid1000;
int server_sock, tmp_fd;
unsigned opt;
enum {
VERBOSE = 1 << 0,
USE_HEADER = 1 << 1, /* -h banner or header for this job */
USE_MAIL = 1 << 2, /* send mail to user@hostname */
OPT_U = 1 << 3, /* -U <username> */
OPT_J = 1 << 4, /* -J <title> is the jobtitle for the banner page */
OPT_C = 1 << 5, /* -C <class> job classification */
OPT_P = 1 << 6, /* -P <queue[@host[:port]]> */
USE_HEADER = 1 << 1, /* -h: want banner printed */
USE_MAIL = 1 << 2, /* -m: send mail back to user */
OPT_U = 1 << 3, /* -U username */
OPT_J = 1 << 4, /* -J title: the job title for the banner page */
OPT_C = 1 << 5, /* -C class: job "class" (? supposedly printed on banner) */
OPT_P = 1 << 6, /* -P queue[@host[:port]] */
/* if no -P is given use $PRINTER, then "lp@localhost:515" */
};
/* Set defaults, parse options */
hostname = mygethostname31();
netopt = NULL;
logname = getenv("LOGNAME");
if (logname == NULL)
logname = (char*)"user"; /* TODO: getpwuid(getuid())->pw_name? */
username = getenv("LOGNAME");
if (username == NULL)
username = (char*)"user"; /* TODO: getpwuid(getuid())->pw_name? */
opt = getopt32(argv, "VhmU:J:C:P:",
&logname, &jobtitle, &jobclass, &netopt);
&username, &jobtitle, &jobclass, &netopt);
argv += optind;
parse_prt(netopt, &netprint);
logname = xstrndup(logname, 31);
username = xstrndup(username, 31);
/* For stdin we need to save it to a tempfile,
* otherwise we can't know the size. */
@ -127,18 +127,18 @@ int lpr_main(int argc, char *argv[])
/* H HOST, P USER, l DATA_FILE_NAME, J JOBNAME */
strings[0] = xasprintf("H%.32s\n" "P%.32s\n" "l%.32s\n"
"J%.99s\n",
hostname, logname, dfa_name,
!(opt & OPT_J) ? *argv : jobtitle);
hostname, username, dfa_name,
(opt & OPT_J) ? jobtitle : *argv);
sptr = &strings[1];
/* C CLASS - printed on banner page (if L cmd is also given) */
if (opt & OPT_J) /* [1] */
if (opt & OPT_C) /* [1] */
*sptr++ = xasprintf("C%.32s\n", jobclass);
/* M WHOM_TO_MAIL */
if (opt & USE_MAIL) /* [2] */
*sptr++ = xasprintf("M%.32s\n", logname);
*sptr++ = xasprintf("M%.32s\n", username);
/* H USER - print banner page, with given user's name */
if (opt & USE_HEADER) /* [3] */
*sptr++ = xasprintf("L%.32s\n", logname);
*sptr++ = xasprintf("L%.32s\n", username);
*sptr = NULL; /* [4] max */
/* RFC 1179: "LPR servers MUST be able