From de8fd9328e9deb0d1ec596d7486686ea3cb688c2 Mon Sep 17 00:00:00 2001 From: "Felix (xq) Queißner" Date: Tue, 9 Jun 2020 18:27:38 +0200 Subject: Includes cmark markdown parser library. --- lib/cmark/test/cmark-fuzz.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 lib/cmark/test/cmark-fuzz.c (limited to 'lib/cmark/test/cmark-fuzz.c') diff --git a/lib/cmark/test/cmark-fuzz.c b/lib/cmark/test/cmark-fuzz.c new file mode 100644 index 0000000..b078e3d --- /dev/null +++ b/lib/cmark/test/cmark-fuzz.c @@ -0,0 +1,33 @@ +#include +#include +#include +#include "cmark.h" + +int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { + struct __attribute__((packed)) { + int options; + int width; + } fuzz_config; + + if (size >= sizeof(fuzz_config)) { + /* The beginning of `data` is treated as fuzzer configuration */ + memcpy(&fuzz_config, data, sizeof(fuzz_config)); + + /* Mask off valid option bits */ + fuzz_config.options &= (CMARK_OPT_SOURCEPOS | CMARK_OPT_HARDBREAKS | CMARK_OPT_UNSAFE | CMARK_OPT_NOBREAKS | CMARK_OPT_NORMALIZE | CMARK_OPT_VALIDATE_UTF8 | CMARK_OPT_SMART); + + /* Remainder of input is the markdown */ + const char *markdown = (const char *)(data + sizeof(fuzz_config)); + const size_t markdown_size = size - sizeof(fuzz_config); + cmark_node *doc = cmark_parse_document(markdown, markdown_size, fuzz_config.options); + + free(cmark_render_commonmark(doc, fuzz_config.options, fuzz_config.width)); + free(cmark_render_html(doc, fuzz_config.options)); + free(cmark_render_latex(doc, fuzz_config.options, fuzz_config.width)); + free(cmark_render_man(doc, fuzz_config.options, fuzz_config.width)); + free(cmark_render_xml(doc, fuzz_config.options)); + + cmark_node_free(doc); + } + return 0; +} -- cgit v1.2.3