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>
86 lines
3.3 KiB
Go
86 lines
3.3 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 connector
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import (
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"fmt"
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"net/url"
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)
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const ZendeskProvider = "ZENDESK"
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// IsValidZendeskSubdomain reports whether s is a single DNS label safe to use
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// as the host component of <subdomain>.zendesk.com. The subdomain is
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// customer-supplied and feeds a URL host on every authorize, token, and API
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// request, so it MUST be validated before use to close an SSRF vector: only
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// ASCII letters, digits, and interior hyphens are allowed (no dots, slashes,
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// colons, '@', or whitespace that could escape the host position), bounded to
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// a 63-character DNS label. DNS is case-insensitive, so mixed case is accepted
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// and used verbatim.
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func IsValidZendeskSubdomain(s string) bool {
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if len(s) == 0 || len(s) > 63 {
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return false
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}
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// i is a byte offset; because every accepted character is single-byte
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// ASCII, i equals the character position, so the i < len(s)-1 bound below
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// correctly identifies the final character. A non-ASCII rune falls through
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// to the default case and is rejected before that assumption matters.
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for i, c := range s {
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switch {
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case c >= 'a' && c <= 'z':
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case c >= 'A' && c <= 'Z':
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case c >= '0' && c <= '9':
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case c == '-' && i > 0 && i < len(s)-1:
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default:
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return false
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}
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}
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return true
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}
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// ZendeskAuthorizeURL returns the OAuth2 authorize endpoint for a Zendesk
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// customer subdomain (e.g. "acme"). It errors on any subdomain that is not a
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// valid single DNS label.
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func ZendeskAuthorizeURL(subdomain string) (string, error) {
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if !IsValidZendeskSubdomain(subdomain) {
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return "", fmt.Errorf("cannot build authorize URL: invalid zendesk subdomain")
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}
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u := url.URL{Scheme: "https", Host: subdomain + ".zendesk.com", Path: "/oauth/authorizations/new"}
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return u.String(), nil
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}
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// ZendeskTokenURL returns the OAuth2 token endpoint for a Zendesk customer
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// subdomain (e.g. "acme"). It errors on any subdomain that is not a valid
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// single DNS label.
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func ZendeskTokenURL(subdomain string) (string, error) {
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if !IsValidZendeskSubdomain(subdomain) {
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return "", fmt.Errorf("cannot build token URL: invalid zendesk subdomain")
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}
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u := url.URL{Scheme: "https", Host: subdomain + ".zendesk.com", Path: "/oauth/tokens"}
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return u.String(), nil
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}
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