From c150462824008957f568ca7aa05a65b35d860eb9 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 25 Mar 2006 13:28:28 -0800 Subject: [PATCH] git-apply: safety fixes This was triggered by me testing the "@@" numbering shorthand by GNU patch, which not only showed that git-apply thought it meant the number was duplicated (when it means that the second number is 1), but my tests showed than when git-apply mis-understood the number, it would then not raise an alarm about it if the patch ended early. Now, this doesn't actually _matter_, since with a three-line context, the only case that "x,1" will be shorthanded to "x" is when x itself is 1 (in which case git-apply got it right), but the fact that git-apply would also silently accept truncated patches was a missed opportunity for additional sanity-checking. So make git-apply refuse to look at a patch fragment that ends early. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano --- apply.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/apply.c b/apply.c index 2da225a8e..c50b3a604 100644 --- a/apply.c +++ b/apply.c @@ -693,7 +693,7 @@ static int parse_range(const char *line, int len, int offset, const char *expect line += digits; len -= digits; - *p2 = *p1; + *p2 = 1; if (*line == ',') { digits = parse_num(line+1, p2); if (!digits) @@ -901,6 +901,8 @@ static int parse_fragment(char *line, unsigned long size, struct patch *patch, s break; } } + if (oldlines || newlines) + return -1; /* If a fragment ends with an incomplete line, we failed to include * it in the above loop because we hit oldlines == newlines == 0 * before seeing it. -- 2.26.2