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Loosen restriction on valid hostnames

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This changes fixes an issue with GitPod integration, where large numbers
in a hostname were incorrectly causing redbean to refuse a request.
This commit is contained in:
Justine Tunney 2022-07-09 04:24:51 -07:00
parent c9e68b0ebc
commit 896db8843f
2 changed files with 15 additions and 7 deletions
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17
net/http/isacceptablehost.c
View file

@ -55,17 +55,18 @@ bool IsAcceptableHost(const char *s, size_t n) {
int c, b, j;
if (n == -1) n = s ? strlen(s) : 0;
if (!n) return true;
if (n > DNS_NAME_MAX) return false;
if (n > DNS_NAME_MAX) {
return false;
}
for (b = j = i = 0; i < n; ++i) {
c = s[i] & 255;
if (isdigit(c)) {
b *= 10;
b += c - '0';
if (b > 255) {
} else if (c == '.') {
if (!i || s[i - 1] == '.') {
return false;
}
} else if (c == '.') {
if (!i || s[i - 1] == '.') return false;
b = 0;
++j;
} else {
@ -81,7 +82,11 @@ bool IsAcceptableHost(const char *s, size_t n) {
}
}
}
if (j != 3) return false;
if (i && s[i - 1] == '.') return false;
if (j != 3) {
return false;
}
if (i && s[i - 1] == '.') {
return false;
}
return true;
}