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authorDenis Vlasenko2008-02-25 23:23:58 +0000
committerDenis Vlasenko2008-02-25 23:23:58 +0000
commit6f1713f216fef686a68db5ee02232bc67e525c7d (patch)
tree256adc75a88723a4b247c32e692d721d65243a82 /libbb
parent394eebed6656dfc2e56a79500b602023000ac415 (diff)
downloadbusybox-6f1713f216fef686a68db5ee02232bc67e525c7d.zip
busybox-6f1713f216fef686a68db5ee02232bc67e525c7d.tar.gz
*: intrduce and use safe_gethostname. By Tito <farmatito AT tiscali.it>
safe_gethostname - 48 +48 glob3 35 37 +2 timestamp_and_log 314 315 +1 udhcp_send_kernel_packet 234 231 -3 scan_tree 275 271 -4 passwd_main 1074 1070 -4 print_login_prompt 68 58 -10 obscure 392 377 -15 syslogd_main 882 866 -16 print_login_issue 516 478 -38 hostname_main 278 223 -55 parse_and_put_prompt 825 756 -69 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 2/9 up/down: 51/-214) Total: -163 bytes text data bss dec hex filename 798791 728 7484 807003 c505b busybox_old 798631 728 7484 806843 c4fbb busybox_unstripped
Diffstat (limited to 'libbb')
-rw-r--r--libbb/Kbuild1
-rw-r--r--libbb/lineedit.c6
-rw-r--r--libbb/login.c14
-rw-r--r--libbb/obscure.c13
4 files changed, 13 insertions, 21 deletions
diff --git a/libbb/Kbuild b/libbb/Kbuild
index 515368d..aab016e 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -73,6 +73,7 @@ lib-y += recursive_action.o
lib-y += remove_file.o
lib-y += restricted_shell.o
lib-y += run_shell.o
+lib-y += safe_gethostname.o
lib-y += safe_poll.o
lib-y += safe_strncpy.o
lib-y += safe_write.o
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 9aab637..c6aa45c 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -1203,11 +1203,7 @@ static void parse_and_put_prompt(const char *prmt_ptr)
break;
#endif
case 'h':
- pbuf = free_me = xzalloc(256);
- if (gethostname(pbuf, 255) < 0) {
- pbuf[0] = '?';
- pbuf[1] = '\0';
- }
+ pbuf = free_me = safe_gethostname();
*strchrnul(pbuf, '.') = '\0';
break;
case '$':
diff --git a/libbb/login.c b/libbb/login.c
index d1f5d64..a711a54 100644
--- a/libbb/login.c
+++ b/libbb/login.c
@@ -50,6 +50,7 @@ void print_login_issue(const char *issue_file, const char *tty)
outbuf = uts.sysname;
break;
case 'n':
+ case 'h':
outbuf = uts.nodename;
break;
case 'r':
@@ -72,10 +73,6 @@ void print_login_issue(const char *issue_file, const char *tty)
case 't':
strftime(buf, sizeof(buf), fmtstr_t, localtime(&t));
break;
- case 'h':
- gethostname(buf, sizeof(buf) - 1);
- buf[sizeof(buf) - 1] = '\0';
- break;
case 'l':
outbuf = tty;
break;
@@ -91,13 +88,12 @@ void print_login_issue(const char *issue_file, const char *tty)
void print_login_prompt(void)
{
- char buf[MAXHOSTNAMELEN+1];
-
- if (gethostname(buf, MAXHOSTNAMELEN) == 0)
- fputs(buf, stdout);
-
+ char *hostname = safe_gethostname();
+
+ fputs(hostname, stdout);
fputs(LOGIN, stdout);
fflush(stdout);
+ free(hostname);
}
/* Clear dangerous stuff, set PATH */
diff --git a/libbb/obscure.c b/libbb/obscure.c
index 5cc9062..1841b27 100644
--- a/libbb/obscure.c
+++ b/libbb/obscure.c
@@ -93,7 +93,7 @@ static const char *obscure_msg(const char *old_p, const char *new_p, const struc
/* Add 2 for each type of characters to the minlen of password */
int size = CONFIG_PASSWORD_MINLEN + 8;
const char *p;
- char hostname[255];
+ char *hostname;
/* size */
if (!new_p || (length = strlen(new_p)) < CONFIG_PASSWORD_MINLEN)
@@ -108,12 +108,11 @@ static const char *obscure_msg(const char *old_p, const char *new_p, const struc
return "similar to gecos";
}
/* hostname as-is, as sub-string, reversed, capitalized, doubled */
- if (gethostname(hostname, 255) == 0) {
- hostname[254] = '\0';
- if (string_checker(new_p, hostname)) {
- return "similar to hostname";
- }
- }
+ hostname = safe_gethostname();
+ i = string_checker(new_p, hostname);
+ free(hostname);
+ if (i)
+ return "similar to hostname";
/* Should / Must contain a mix of: */
for (i = 0; i < length; i++) {