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| author | Eric Wong | 2009-03-14 18:41:47 -0700 |
|---|---|---|
| committer | Lars Hjemli | 2009-03-15 08:46:15 +0100 |
| commit | 112973615a78ce61fd6e767128df03b075be72ca (patch) | |
| tree | cf4b3eb63f42d77ac77f74d951f583e1503886aa | |
| parent | 6063e7b5532481ffaa7a6f080de28547983bbeb7 (diff) | |
| download | cgit-112973615a78ce61fd6e767128df03b075be72ca.tar cgit-112973615a78ce61fd6e767128df03b075be72ca.tar.gz cgit-112973615a78ce61fd6e767128df03b075be72ca.zip | |
fix segfault when displaying empty blobs
When size is zero, subtracting one from it turns it into
ULONG_MAX which causes an out-of-bounds access on buf.
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
| -rw-r--r-- | ui-tree.c | 13 |
1 files changed, 8 insertions, 5 deletions
@@ -25,11 +25,14 @@ static void print_text_buffer(char *buf, unsigned long size) html("<tr><td class='linenumbers'><pre>"); idx = 0; lineno = 0; - htmlf(numberfmt, ++lineno); - while(idx < size - 1) { // skip absolute last newline - if (buf[idx] == '\n') - htmlf(numberfmt, ++lineno); - idx++; + + if (size) { + htmlf(numberfmt, ++lineno); + while(idx < size - 1) { // skip absolute last newline + if (buf[idx] == '\n') + htmlf(numberfmt, ++lineno); + idx++; + } } html("</pre></td>\n"); html("<td class='lines'><pre><code>"); |