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>
80 lines
2.5 KiB
Go
80 lines
2.5 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 rand
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import (
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"math/big"
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)
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// HexString returns a hex-encoded cryptographically random string.
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// The output is 2*byteLen characters long.
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func HexString(byteLen int) (string, error) {
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b := make([]byte, byteLen)
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if _, err := rand.Read(b); err != nil {
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return "", fmt.Errorf("cannot generate random bytes: %w", err)
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}
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return hex.EncodeToString(b), nil
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}
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// MustHexString is like HexString but panics if the system entropy source is
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// unavailable.
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func MustHexString(byteLen int) string {
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s, err := HexString(byteLen)
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if err != nil {
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panic("rand: crypto/rand is unavailable: " + err.Error())
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}
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return s
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}
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// StringFromAlphabet returns a random string of length n, where each character
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// is drawn uniformly from alphabet using crypto/rand.
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func StringFromAlphabet(alphabet string, n int) (string, error) {
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max := big.NewInt(int64(len(alphabet)))
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buf := make([]byte, n)
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for i := range buf {
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idx, err := rand.Int(rand.Reader, max)
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if err != nil {
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return "", fmt.Errorf("cannot generate random bytes: %w", err)
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}
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buf[i] = alphabet[idx.Int64()]
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}
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return string(buf), nil
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}
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// MustStringFromAlphabet is like StringFromAlphabet but panics if the system
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// entropy source is unavailable.
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func MustStringFromAlphabet(alphabet string, n int) string {
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s, err := StringFromAlphabet(alphabet, n)
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if err != nil {
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panic("rand: crypto/rand is unavailable: " + err.Error())
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}
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return s
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}
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