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-rw-r--r--source/ui-ssdiff.c18
-rw-r--r--tests/t0200-security.sh26
2 files changed, 42 insertions, 2 deletions
diff --git a/source/ui-ssdiff.c b/source/ui-ssdiff.c
index af8bc9e..ed5a2f4 100644
--- a/source/ui-ssdiff.c
+++ b/source/ui-ssdiff.c
@@ -237,13 +237,20 @@ static void print_ssdiff_line(char *class,
struct diff_filespec *old_file = cgit_get_current_old_file();
char *lineno_str = fmt("n%d", old_line_no);
char *id_str = fmt("id=%s#%s", is_null_oid(&old_file->oid)?"HEAD":oid_to_hex(old_rev_oid), lineno_str);
- char *fileurl = cgit_fileurl(ctx.repo->url, "tree", old_file->path, id_str);
+ struct strbuf path = STRBUF_INIT;
+ char *fileurl;
+ // The file path is repository content, so percent-encode it
+ // before it lands raw in the href below.
+ if (old_file->path)
+ strbuf_add_percentencode(&path, old_file->path, 0);
+ fileurl = cgit_fileurl(ctx.repo->url, "tree", path.buf, id_str);
html("<td class='lineno'><a href='");
html(fileurl);
htmlf("'>%s</a>", lineno_str + 1);
html("</td>");
htmlf("<td class='%s'>", class);
free(fileurl);
+ strbuf_release(&path);
} else if (old_line)
htmlf("<td class='lineno'></td><td class='%s'>", class);
else
@@ -260,13 +267,20 @@ static void print_ssdiff_line(char *class,
struct diff_filespec *new_file = cgit_get_current_new_file();
char *lineno_str = fmt("n%d", new_line_no);
char *id_str = fmt("id=%s#%s", is_null_oid(&new_file->oid)?"HEAD":oid_to_hex(new_rev_oid), lineno_str);
- char *fileurl = cgit_fileurl(ctx.repo->url, "tree", new_file->path, id_str);
+ struct strbuf path = STRBUF_INIT;
+ char *fileurl;
+ // The file path is repository content, so percent-encode it
+ // before it lands raw in the href below.
+ if (new_file->path)
+ strbuf_add_percentencode(&path, new_file->path, 0);
+ fileurl = cgit_fileurl(ctx.repo->url, "tree", path.buf, id_str);
html("<td class='lineno'><a href='");
html(fileurl);
htmlf("'>%s</a>", lineno_str + 1);
html("</td>");
htmlf("<td class='%s'>", class);
free(fileurl);
+ strbuf_release(&path);
} else if (new_line)
htmlf("<td class='lineno'></td><td class='%s'>", class);
else
diff --git a/tests/t0200-security.sh b/tests/t0200-security.sh
index 44703c9..4eee9ae 100644
--- a/tests/t0200-security.sh
+++ b/tests/t0200-security.sh
@@ -149,4 +149,30 @@ test_expect_success 'enable-help=0 hides the tab and the page' '
grep "Status: 404" tmp
'
+# --- Side-by-side diff percent-encodes a file path into its links -----------
+# A file name is repository content and may contain a quote, which would
+# otherwise break out of the href attribute of the line-number links.
+test_expect_success 'ssdiff percent-encodes a quoted file path' '
+ mkrepo repos/xss 1 &&
+ name=$(printf "x\047y.txt") &&
+ (
+ cd repos/xss &&
+ printf "a\nb\n" >"$name" &&
+ git add -A &&
+ git commit -m add &&
+ printf "a\nc\n" >"$name" &&
+ git commit -am change
+ ) &&
+ {
+ echo "virtual-root=/" &&
+ echo "cache-size=0" &&
+ echo "repo.url=xss" &&
+ echo "repo.path=$PWD/repos/xss/.git"
+ } >xssrc &&
+ sha=$(git -C repos/xss rev-parse HEAD) &&
+ CGIT_CONFIG="$PWD/xssrc" QUERY_STRING="url=xss/diff/&id=$sha&ss=1" cgit >tmp &&
+ grep "tree/x%27y.txt" tmp &&
+ ! grep "href=.[^>]*x.y.txt.[^>]*>" tmp
+'
+
test_done