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49 lines
1.3 KiB
49 lines
1.3 KiB
3 years ago
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From 1ef6e9d0eef9278829f863fff55755b7a5415b81 Mon Sep 17 00:00:00 2001
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From: Christos Zoulas <christos@zoulas.com>
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Date: Fri, 11 Jan 2019 10:49:54 -0500
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Subject: [PATCH] Abort history loading on long lines
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diff --git a/sh.lex.c b/sh.lex.c
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index fee790a..e945795 100644
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--- a/sh.lex.c
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+++ b/sh.lex.c
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@@ -145,6 +145,7 @@ lex(struct wordent *hp)
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struct wordent *wdp;
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eChar c;
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int parsehtime = enterhist;
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+ int toolong = 0;
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histvalid = 0;
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histline.len = 0;
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@@ -179,6 +180,8 @@ lex(struct wordent *hp)
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wdp = new;
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wdp->word = word(parsehtime);
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parsehtime = 0;
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+ if (enterhist && toolong++ > 10 * 1024)
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+ stderror(ERR_LTOOLONG);
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} while (wdp->word[0] != '\n');
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cleanup_ignore(hp);
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cleanup_until(hp);
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@@ -291,9 +294,12 @@ word(int parsehtime)
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Char hbuf[12];
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int h;
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int dolflg;
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+ int toolong = 0;
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cleanup_push(&wbuf, Strbuf_cleanup);
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loop:
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+ if (enterhist && toolong++ > 256 * 1024)
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+ seterror(ERR_WTOOLONG);
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while ((c = getC(DOALL)) == ' ' || c == '\t')
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continue;
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if (cmap(c, _META | _ESC))
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@@ -352,6 +358,8 @@ word(int parsehtime)
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c1 = 0;
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dolflg = DOALL;
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for (;;) {
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+ if (enterhist && toolong++ > 256 * 1024)
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+ seterror(ERR_WTOOLONG);
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if (c1) {
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if (c == c1) {
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c1 = 0;
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