b44ceb32e6
WriteRow was a variadic alias for Write(SanitizeRecord(...)) with no extra safety or column checks. Export call sites already use []string headers; matching encoding/csv keeps one API surface. Signed-off-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>
56 lines
2.0 KiB
Go
56 lines
2.0 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 safecsv wraps encoding/csv for exports that may contain user-controlled
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// text. Writer sanitizes every cell before encoding to reduce spreadsheet formula
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// injection when a file is opened in Excel, LibreOffice Calc, Google Sheets, or
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// similar tools.
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//
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// Use safecsv for all user-facing CSV downloads. Do not write export CSV with
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// encoding/csv alone when record fields can contain untrusted or attacker-influenced
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// content.
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package safecsv
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import (
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"encoding/csv"
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"io"
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)
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type Writer struct {
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inner *csv.Writer
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}
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func NewWriter(w io.Writer) *Writer {
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return &Writer{inner: csv.NewWriter(w)}
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}
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// Write encodes a CSV record after sanitizing every field.
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func (w *Writer) Write(record []string) error {
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return w.inner.Write(SanitizeRecord(record))
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}
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func (w *Writer) Flush() {
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w.inner.Flush()
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}
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func (w *Writer) Error() error {
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return w.inner.Error()
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}
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