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udhcp: handle errors in read_staticlease

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also gets rid of ether-aton's static buffer in ether-wake:
   text   data    bss    dec    hexfilename
 838664    441   7572 846677  ceb55busybox_old
 838650    441   7564 846655  ceb3fbusybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-03-23 15:43:08 +01:00
parent 30ebd7bd78
commit 37a658c4c8
5 changed files with 18 additions and 20 deletions
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8
networking/ether-wake.c
View File

@ -111,10 +111,9 @@ static void get_dest_addr(const char *hostid, struct ether_addr *eaddr)
{
struct ether_addr *eap;
eap = ether_aton(hostid);
eap = ether_aton_r(hostid, eaddr);
if (eap) {
*eaddr = *eap;
bb_debug_msg("The target station address is %s\n\n", ether_ntoa(eaddr));
bb_debug_msg("The target station address is %s\n\n", ether_ntoa(eap));
#if !defined(__UCLIBC_MAJOR__) \
|| __UCLIBC_MAJOR__ > 0 \
|| __UCLIBC_MINOR__ > 9 \
@ -122,8 +121,9 @@ static void get_dest_addr(const char *hostid, struct ether_addr *eaddr)
} else if (ether_hostton(hostid, eaddr) == 0) {
bb_debug_msg("Station address for hostname %s is %s\n\n", hostid, ether_ntoa(eaddr));
#endif
} else
} else {
bb_show_usage();
}
}
static int get_fill(unsigned char *pkt, struct ether_addr *eaddr, int broadcast)

2
networking/nameif.c
View File

@ -90,7 +90,7 @@ static void nameif_parse_selector(ethtable_t *ch, char *selector)
} else {
#endif
lmac = xmalloc(ETH_ALEN);
ch->mac = ether_aton_r(selector + (strncmp(selector, "mac=", 4) ? 0 : 4), lmac);
ch->mac = ether_aton_r(selector + (strncmp(selector, "mac=", 4) != 0 ? 0 : 4), lmac);
if (ch->mac == NULL)
bb_error_msg_and_die("can't parse %s", selector);
#if ENABLE_FEATURE_NAMEIF_EXTENDED

2
networking/udhcp/common.h
View File

@ -176,7 +176,7 @@ uint8_t *dname_enc(const uint8_t *cstr, int clen, const char *src, int *retlen)
// RFC 2131 Table 5: Fields and options used by DHCP clients
//
// Fiels 'hops', 'yiaddr', 'siaddr', 'giaddr' are always zero
// Fields 'hops', 'yiaddr', 'siaddr', 'giaddr' are always zero
//
// Field DHCPDISCOVER DHCPINFORM DHCPREQUEST DHCPDECLINE DHCPRELEASE
// ----- ------------ ------------ ----------- ----------- -----------

20
networking/udhcp/files.c
View File

@ -34,11 +34,6 @@ static int FAST_FUNC read_nip(const char *line, void *arg)
return 1;
}
static int FAST_FUNC read_mac(const char *line, void *arg)
{
return NULL == ether_aton_r(line, (struct ether_addr *)arg);
}
static int FAST_FUNC read_str(const char *line, void *arg)
{
char **dest = arg;
@ -242,6 +237,7 @@ static int FAST_FUNC read_opt(const char *const_line, void *arg)
if (retval)
attach_option(opt_list, option, opt, length);
} while (retval && option->flags & OPTION_LIST);
return retval;
}
@ -250,19 +246,21 @@ static int FAST_FUNC read_staticlease(const char *const_line, void *arg)
char *line;
char *mac_string;
char *ip_string;
struct ether_addr mac_bytes;
uint32_t ip;
struct ether_addr mac_bytes; /* it's "struct { uint8_t mac[6]; }" */
uint32_t nip;
/* Read mac */
line = (char *) const_line;
mac_string = strtok_r(line, " \t", &line);
read_mac(mac_string, &mac_bytes);
if (!mac_string || !ether_aton_r(mac_string, &mac_bytes))
return 0;
/* Read ip */
ip_string = strtok_r(NULL, " \t", &line);
read_nip(ip_string, &ip);
if (!ip_string || !read_nip(ip_string, &nip))
return 0;
add_static_lease(arg, (uint8_t*) &mac_bytes, ip);
add_static_lease(arg, (uint8_t*) &mac_bytes, nip);
log_static_leases(arg);
@ -316,7 +314,7 @@ void FAST_FUNC read_config(const char *file)
parser = config_open(file);
while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
for (k = keywords, i = 0; i < ARRAY_SIZE(keywords); k++, i++) {
if (!strcasecmp(token[0], k->keyword)) {
if (strcasecmp(token[0], k->keyword) == 0) {
if (!k->handler(token[1], k->var)) {
bb_error_msg("can't parse line %u in %s",
parser->lineno, file);

6
networking/udhcp/packet.c
View File

@ -113,8 +113,8 @@ int FAST_FUNC udhcp_recv_kernel_packet(struct dhcp_packet *packet, int fd)
};
int i;
for (i = 0; broken_vendors[i][0]; i++) {
if (vendor[OPT_LEN - 2] == (uint8_t)strlen(broken_vendors[i])
&& !strncmp((char*)vendor, broken_vendors[i], vendor[OPT_LEN - 2])
if (vendor[OPT_LEN - OPT_DATA] == (uint8_t)strlen(broken_vendors[i])
&& strncmp((char*)vendor, broken_vendors[i], vendor[OPT_LEN - OPT_DATA]) == 0
) {
log1("Broken client (%s), forcing broadcast replies",
broken_vendors[i]);
@ -122,7 +122,7 @@ int FAST_FUNC udhcp_recv_kernel_packet(struct dhcp_packet *packet, int fd)
}
}
#else
if (vendor[OPT_LEN - 2] == (uint8_t)(sizeof("MSFT 98")-1)
if (vendor[OPT_LEN - OPT_DATA] == (uint8_t)(sizeof("MSFT 98")-1)
&& memcmp(vendor, "MSFT 98", sizeof("MSFT 98")-1) == 0
) {
log1("Broken client (%s), forcing broadcast replies", "MSFT 98");