59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include "cmark-gfm.h"
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#include "cmark-gfm-core-extensions.h"
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const char *extension_names[] = {
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"autolink",
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"strikethrough",
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"table",
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"tagfilter",
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NULL,
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};
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int LLVMFuzzerInitialize(int *argc, char ***argv) {
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cmark_gfm_core_extensions_ensure_registered();
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return 0;
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}
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int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
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struct __attribute__((packed)) {
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int options;
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int width;
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} fuzz_config;
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if (size >= sizeof(fuzz_config)) {
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/* The beginning of `data` is treated as fuzzer configuration */
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memcpy(&fuzz_config, data, sizeof(fuzz_config));
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/* Remainder of input is the markdown */
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const char *markdown = (const char *)(data + sizeof(fuzz_config));
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const size_t markdown_size = size - sizeof(fuzz_config);
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cmark_parser *parser = cmark_parser_new(fuzz_config.options);
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for (const char **it = extension_names; *it; ++it) {
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const char *extension_name = *it;
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cmark_syntax_extension *syntax_extension = cmark_find_syntax_extension(extension_name);
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if (!syntax_extension) {
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fprintf(stderr, "%s is not a valid syntax extension\n", extension_name);
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abort();
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}
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cmark_parser_attach_syntax_extension(parser, syntax_extension);
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}
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cmark_parser_feed(parser, markdown, markdown_size);
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cmark_node *doc = cmark_parser_finish(parser);
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free(cmark_render_commonmark(doc, fuzz_config.options, fuzz_config.width));
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free(cmark_render_html(doc, fuzz_config.options, NULL));
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free(cmark_render_latex(doc, fuzz_config.options, fuzz_config.width));
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free(cmark_render_man(doc, fuzz_config.options, fuzz_config.width));
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free(cmark_render_xml(doc, fuzz_config.options));
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cmark_node_free(doc);
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cmark_parser_free(parser);
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}
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return 0;
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}
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