Package: lpr
Version: 1:2008.05.17
I am using Debian squeeze/sid.
According to the lprm's source code, this command (which is setuid-root on
squeeze/sid) can be used with the "-w" option in order to specify a timeout
value. But the program exits with SIGSEGV signal when using this option:
$ lprm -w 30
Segmentation fault
$ cat -n lpr-2008.05.17/lprm/lprm.c
[...]
120 while ((ch = getopt(argc, argv, "P:w")) != -1) {
121 switch (ch) {
122 case 'P':
123 printer = optarg;
124 break;
125 case 'w':
126 l = strtol(optarg, &cp, 10);
127 if (*cp != '\0' || l < 0 || l >= INT_MAX)
As seen in the source code, when parsing options (line 125 and 126),
"optarg" (supposed to be -w's argument) is stored as a long integer into
"&cp", but it fails because "optarg" is always NULL. Function getopt()
sets optarg only when an option takes an argument, and according to the
optstring ("P:w", line 120), "-w" does not require an option which is
wrong.
Why is this option not documented in lprm(1) or "--help" ?
Anyway, this fixes the bug :
--- lprm.c.orig 2010-10-31 18:25:25.000000000 +0100
+++ lprm.c 2010-10-31 18:25:45.000000000 +0100
@@ -117,7 +117,7 @@
fatal("Your name is too long");
strlcpy(luser, pw->pw_name, sizeof(luser));
person = luser;
- while ((ch = getopt(argc, argv, "P:w")) != -1) {
+ while ((ch = getopt(argc, argv, "P:w:")) != -1) {
switch (ch) {
case 'P':
printer = optarg;
--
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]
