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handle NULL when parsing IPv6 address (check for formatting)

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Change-Id: I42e1288689946c295e0bd1490a5eb4d8befb5877
This commit is contained in:
Ivan Delamer 2011-10-28 13:54:16 -06:00
parent edcc859b58
commit 21333d0f18
1 changed files with 21 additions and 14 deletions
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35
src/core/ipv6/ip6_addr.c
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@ -91,11 +91,13 @@ ip6addr_aton(const char *cp, ip6_addr_t *addr)
current_block_value = 0; current_block_value = 0;
for (s = cp; *s != 0; s++) { for (s = cp; *s != 0; s++) {
if (*s == ':') { if (*s == ':') {
if (current_block_index & 0x1) { if (addr) {
addr->addr[addr_index++] |= current_block_value; if (current_block_index & 0x1) {
} addr->addr[addr_index++] |= current_block_value;
else { }
addr->addr[addr_index] = current_block_value << 16; else {
addr->addr[addr_index] = current_block_value << 16;
}
} }
current_block_index++; current_block_index++;
current_block_value = 0; current_block_value = 0;
@ -110,7 +112,9 @@ ip6addr_aton(const char *cp, ip6_addr_t *addr)
addr_index++; addr_index++;
} }
else { else {
addr->addr[addr_index] = 0; if (addr) {
addr->addr[addr_index] = 0;
}
} }
current_block_index++; current_block_index++;
} }
@ -126,16 +130,20 @@ ip6addr_aton(const char *cp, ip6_addr_t *addr)
} }
} }
if (current_block_index & 0x1) { if (addr) {
addr->addr[addr_index++] |= current_block_value; if (current_block_index & 0x1) {
} addr->addr[addr_index++] |= current_block_value;
else { }
addr->addr[addr_index] = current_block_value << 16; else {
addr->addr[addr_index] = current_block_value << 16;
}
} }
/* convert to network byte order. */ /* convert to network byte order. */
for (addr_index = 0; addr_index < 4; addr_index++) { if (addr) {
addr->addr[addr_index] = htonl(addr->addr[addr_index]); for (addr_index = 0; addr_index < 4; addr_index++) {
addr->addr[addr_index] = htonl(addr->addr[addr_index]);
}
} }
if (current_block_index != 7) { if (current_block_index != 7) {
@ -143,7 +151,6 @@ ip6addr_aton(const char *cp, ip6_addr_t *addr)
} }
return 1; return 1;
} }
/** /**