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Overflow detection in ngx_inet_addr().

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This commit is contained in:
Ruslan Ermilov 2015-03-17 00:26:22 +03:00
parent 3ad3f4ae0a
commit a43f1bcf6e
1 changed files with 6 additions and 2 deletions
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8
src/core/ngx_inet.c
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@ -27,6 +27,10 @@ ngx_inet_addr(u_char *text, size_t len)
for (p = text; p < text + len; p++) { for (p = text; p < text + len; p++) {
if (octet > 255) {
return INADDR_NONE;
}
c = *p; c = *p;
if (c >= '0' && c <= '9') { if (c >= '0' && c <= '9') {
@ -34,7 +38,7 @@ ngx_inet_addr(u_char *text, size_t len)
continue; continue;
} }
if (c == '.' && octet < 256) { if (c == '.') {
addr = (addr << 8) + octet; addr = (addr << 8) + octet;
octet = 0; octet = 0;
n++; n++;
@ -44,7 +48,7 @@ ngx_inet_addr(u_char *text, size_t len)
return INADDR_NONE; return INADDR_NONE;
} }
if (n == 3 && octet < 256) { if (n == 3) {
addr = (addr << 8) + octet; addr = (addr << 8) + octet;
return htonl(addr); return htonl(addr);
} }