26 lines
896 B
Diff
26 lines
896 B
Diff
From b9c8387c5ae3178d3eb65ad7b9d9683717d5012b Mon Sep 17 00:00:00 2001
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From: Jakub Jelen <jjelen@redhat.com>
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Date: Tue, 5 Sep 2023 17:33:41 +0200
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Subject: [PATCH] libssh: Implement SFTP packet size limit
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Signed-off-by: Jakub Jelen <jjelen@redhat.com>
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---
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lib/vssh/libssh.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/lib/vssh/libssh.c b/lib/vssh/libssh.c
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index dea0084575859b..ba2573ec052271 100644
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--- a/lib/vssh/libssh.c
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+++ b/lib/vssh/libssh.c
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@@ -2567,6 +2567,11 @@ static ssize_t sftp_send(struct Curl_easy *data, int sockindex,
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struct connectdata *conn = data->conn;
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(void)sockindex;
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+ /* limit the writes to the maximum specified in Section 3 of
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+ * https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-02
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+ */
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+ len = len > 32768 ? 32768 : len;
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+
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nwrite = sftp_write(conn->proto.sshc.sftp_file, mem, len);
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myssh_block2waitfor(conn, FALSE);
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