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>
117 lines
3.2 KiB
Go
117 lines
3.2 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 security
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import (
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"context"
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"fmt"
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"strings"
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"codeberg.org/miekg/dns"
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"go.probo.inc/probo/pkg/agent"
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)
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type (
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dmarcParams struct {
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Domain string `json:"domain" jsonschema:"The domain to check DMARC record for (e.g. example.com)"`
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}
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dmarcResult struct {
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Found bool `json:"found"`
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RawRecord string `json:"raw_record,omitempty"`
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Policy string `json:"policy,omitempty"`
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Percentage string `json:"pct,omitempty"`
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RUA string `json:"rua,omitempty"`
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RUF string `json:"ruf,omitempty"`
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ErrorDetail string `json:"error_detail,omitempty"`
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}
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)
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func parseDMARCTag(record, tag string) string {
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for part := range strings.SplitSeq(record, ";") {
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part = strings.TrimSpace(part)
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if after, ok := strings.CutPrefix(part, tag+"="); ok {
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return after
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}
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}
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return ""
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}
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func CheckDMARCTool() agent.Tool {
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return agent.FunctionTool(
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"check_dmarc",
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"Check the DMARC DNS record for a domain, returning the policy, percentage, and reporting addresses.",
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func(ctx context.Context, p dmarcParams) (agent.ToolResult, error) {
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fqdn := "_dmarc." + p.Domain
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if !strings.HasSuffix(fqdn, ".") {
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fqdn = fqdn + "."
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}
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client := dns.NewClient()
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answers, err := queryDNS(
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ctx,
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client,
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&dns.TXT{
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Hdr: dns.Header{
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Name: fqdn,
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Class: dns.ClassINET,
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},
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},
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)
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if err != nil {
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return agent.ResultJSON(
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dmarcResult{
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Found: false,
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ErrorDetail: fmt.Sprintf("cannot lookup DMARC record: %s", err),
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},
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), nil
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}
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for _, answer := range answers {
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txt, ok := answer.(*dns.TXT)
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if !ok {
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continue
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}
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record := strings.Join(txt.Txt, "")
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if !strings.HasPrefix(record, "v=DMARC1") {
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continue
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}
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result := dmarcResult{
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Found: true,
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RawRecord: record,
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Policy: parseDMARCTag(record, "p"),
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Percentage: parseDMARCTag(record, "pct"),
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RUA: parseDMARCTag(record, "rua"),
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RUF: parseDMARCTag(record, "ruf"),
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}
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return agent.ResultJSON(result), nil
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}
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return agent.ResultJSON(dmarcResult{Found: false}), nil
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},
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)
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}
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