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| author | stefanf <stefanf@FreeBSD.org> | 2006-04-29 10:29:10 +0000 |
|---|---|---|
| committer | stefanf <stefanf@FreeBSD.org> | 2006-04-29 10:29:10 +0000 |
| commit | 0217b84e8a5ba9e2a460b9d1a42d6bd063d2e788 (patch) | |
| tree | 3ca737d0266af7e1638c25a6315acb0541c6c315 /bin/sh/input.c | |
| parent | 78ed66ae083c20c8fc784c109730c53a45725865 (diff) | |
| download | FreeBSD-src-0217b84e8a5ba9e2a460b9d1a42d6bd063d2e788.zip FreeBSD-src-0217b84e8a5ba9e2a460b9d1a42d6bd063d2e788.tar.gz | |
Check the buffer size when copying the line returned by el_gets() into our
own buffer. Interactively typing in long lines (>1023 characters)
previously overflowed the buffer. Unlike the NetBSD people I don't see the
need to subtract 8 from BUFSIZ, so I just used BUFSIZ-1.
Obtained from: NetBSD
PR: 91110
Diffstat (limited to 'bin/sh/input.c')
| -rw-r--r-- | bin/sh/input.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/bin/sh/input.c b/bin/sh/input.c index f4bb703..81c1f0b 100644 --- a/bin/sh/input.c +++ b/bin/sh/input.c @@ -184,14 +184,23 @@ preadfd(void) retry: #ifndef NO_HISTORY if (parsefile->fd == 0 && el) { - const char *rl_cp; + static const char *rl_cp; + static int el_len; - rl_cp = el_gets(el, &nr); + if (rl_cp == NULL) + rl_cp = el_gets(el, &el_len); if (rl_cp == NULL) nr = 0; else { - /* XXX - BUFSIZE should redesign so not necessary */ - (void) strcpy(parsenextc, rl_cp); + nr = el_len; + if (nr > BUFSIZ - 1) + nr = BUFSIZ - 1; + memcpy(parsenextc, rl_cp, nr); + if (nr != el_len) { + el_len -= nr; + rl_cp += nr; + } else + rl_cp = NULL; } } else #endif |
