4c57d201a4
The source headers, LICENSE files, and license metadata had drifted apart. Align the entire project to MIT: - Convert every source-file header to the MIT text across all comment styles (Go, TS, TSX, JS, MJS, SQL, CSS, GraphQL, shell), including SPDX-License-Identifier tags - Set the root and cookie-banner LICENSE files to the MIT text with a "MIT License" title line - Switch the package.json license fields, Docker image label, and cookie-banner README to MIT - Update docs and the genmodels header generator accordingly - Normalize copyright lines to a single format (Copyright (c) <year(s)> Probo Inc <hello@probo.com>.): unify the hello@getprobo.com and hello@probo.inc emails to hello@probo.com and the comma-separated years to a hyphenated range Genuine third-party references are intentionally left untouched: the Lucide icon attributions (Lucide is ISC) and the trivy dependency license allowlist. Signed-off-by: Sacha Al Himdani <sacha@probo.com>
95 lines
2.9 KiB
Go
95 lines
2.9 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@probo.com>.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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// Package netcheck provides shared network validation functions to prevent
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// SSRF attacks and DNS rebinding across agent tool packages.
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package netcheck
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import (
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"fmt"
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"net"
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"net/url"
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)
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// IsPublicIP reports whether ip is a publicly routable address. It returns
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// false for loopback, private, link-local, multicast (any range), and
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// unspecified addresses.
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func IsPublicIP(ip net.IP) bool {
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if ip.IsLoopback() ||
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ip.IsPrivate() ||
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ip.IsLinkLocalUnicast() ||
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ip.IsMulticast() ||
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ip.IsUnspecified() {
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return false
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}
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return true
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}
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// ValidatePublicURL checks that rawURL uses an http or https scheme and that
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// its host does not resolve to a private, loopback, or link-local IP address.
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// This prevents SSRF attacks where the LLM could be tricked into requesting
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// internal network endpoints.
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func ValidatePublicURL(rawURL string) error {
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u, err := url.Parse(rawURL)
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if err != nil {
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return fmt.Errorf("cannot parse URL: %w", err)
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}
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if u.Scheme != "http" && u.Scheme != "https" {
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return fmt.Errorf("unsupported URL scheme %q: only http and https are allowed", u.Scheme)
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}
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host := u.Hostname()
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if host == "" {
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return fmt.Errorf("URL has no host")
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}
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ips, err := net.LookupIP(host)
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if err != nil {
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return fmt.Errorf("cannot resolve host %q: %w", host, err)
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}
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for _, ip := range ips {
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if !IsPublicIP(ip) {
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return fmt.Errorf("host %q resolves to non-public IP %s", host, ip)
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}
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}
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return nil
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}
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// ValidatePublicDomain checks that a domain does not resolve to a private,
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// loopback, or link-local IP address.
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func ValidatePublicDomain(domain string) error {
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ips, err := net.LookupIP(domain)
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if err != nil {
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return fmt.Errorf("cannot resolve host %q: %w", domain, err)
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}
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for _, ip := range ips {
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if !IsPublicIP(ip) {
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return fmt.Errorf("host %q resolves to non-public IP %s", domain, ip)
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}
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}
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return nil
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}
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