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Use stpecpy() where appropriate

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This function simplifies the calculation of the bounds of the buffer for
catenating strings.  It would also reduce error checking, but we don't
care about truncation in this specific code. :)

Signed-off-by: Alejandro Colomar <alx@kernel.org>
This commit is contained in:
Alejandro Colomar 2023-02-10 22:52:25 +01:00 committed by Iker Pedrosa
parent 709e6b4497
commit 5956cea1d1
1 changed files with 13 additions and 27 deletions
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40
src/groupmod.c
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@ -35,6 +35,7 @@
#include "sgroupio.h"
#endif
#include "shadowlog.h"
#include "stpecpy.h"
#include "stpeprintf.h"
/*
* exit status values
@ -590,42 +591,27 @@ static void prepare_failure_reports (void)
"group %s/%ju", group_name, (uintmax_t) group_id);
if (nflg) {
strncat (info_group.action, ", new name: ",
511 - strlen (info_group.audit_msg));
strncat (info_group.action, group_newname,
511 - strlen (info_group.audit_msg));
gr = stpecpy(gr, gr_end, ", new name: ");
gr = stpecpy(gr, gr_end, group_newname);
#ifdef SHADOWGRP
strncat (info_gshadow.action, ", new name: ",
511 - strlen (info_gshadow.audit_msg));
strncat (info_gshadow.action, group_newname,
511 - strlen (info_gshadow.audit_msg));
sgr = stpecpy(sgr, sgr_end, ", new name: ");
sgr = stpecpy(sgr, sgr_end, group_newname);
#endif
strncat (info_passwd.action, ", new name: ",
511 - strlen (info_passwd.audit_msg));
strncat (info_passwd.action, group_newname,
511 - strlen (info_passwd.audit_msg));
pw = stpecpy(pw, pw_end, ", new name: ");
pw = stpecpy(pw, pw_end, group_newname);
}
if (pflg) {
strncat (info_group.action, ", new password",
511 - strlen (info_group.audit_msg));
gr = stpecpy(gr, gr_end, ", new password");
#ifdef SHADOWGRP
strncat (info_gshadow.action, ", new password",
511 - strlen (info_gshadow.audit_msg));
sgr = stpecpy(sgr, sgr_end, ", new password");
#endif
}
if (gflg) {
strncat (info_group.action, ", new gid: ",
511 - strlen (info_group.audit_msg));
stpeprintf(info_group.action+strlen (info_group.action),
gr_end, "%ju", (uintmax_t) group_newid);
gr = stpecpy(gr, gr_end, ", new gid: ");
stpeprintf(gr, gr_end, "%ju", (uintmax_t) group_newid);
strncat (info_passwd.action, ", new gid: ",
511 - strlen (info_passwd.audit_msg));
stpeprintf(info_passwd.action+strlen (info_passwd.action),
pw_end, "%ju", (uintmax_t) group_newid);
pw = stpecpy(pw, pw_end, ", new gid: ");
stpeprintf(pw, pw_end, "%ju", (uintmax_t) group_newid);
}
// FIXME: add a system cleanup