view fuzz-harness.c @ 1630:9579377b5f8b

use strlcpy & strlcat (#74) * refactor checkpubkeyperms() with safe BSD functions fix gcc8 warnings ``` svr-authpubkey.c: In function 'checkpubkeyperms': svr-authpubkey.c:427:2: warning: 'strncat' specified bound 5 equals source length [-Wstringop-overflow=] strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ svr-authpubkey.c:433:2: warning: 'strncat' specified bound 16 equals source length [-Wstringop-overflow=] strncat(filename, "/authorized_keys", 16); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ``` see https://www.sudo.ws/todd/papers/strlcpy.html * restore strlcpy in xstrdup see original https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/xmalloc.c?rev=1.16
author François Perrad <francois.perrad@gadz.org>
date Wed, 20 Mar 2019 15:09:19 +0100
parents bff41a61a1b6
children dfbe947bdf0d
line wrap: on
line source

#include "includes.h"
#include "buffer.h"
#include "dbutil.h"

extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size);

int main(int argc, char ** argv) {
    int i;
    buffer *input = buf_new(100000);

    for (i = 1; i < argc; i++) {
        printf("arg %s\n", argv[i]);
#if DEBUG_TRACE
        if (strcmp(argv[i], "-v") == 0) {
            debug_trace = 1;
            TRACE(("debug printing on"))
        }
#endif
    }

    int old_fuzz_wrapfds = 0;
    for (i = 1; i < argc; i++) {
        if (argv[i][0] == '-') {
            /* ignore arguments */
            continue;
        }

        char* fn = argv[i];
        buf_setlen(input, 0);
        buf_readfile(input, fn);
        buf_setpos(input, 0);

        fuzz.wrapfds = old_fuzz_wrapfds;
        printf("Running %s once \n", fn);
        LLVMFuzzerTestOneInput(input->data, input->len);
        printf("Running %s twice \n", fn);
        LLVMFuzzerTestOneInput(input->data, input->len);
        printf("Done %s\n", fn);

        /* Disable wrapfd so it won't interfere with buf_readfile() above */
        old_fuzz_wrapfds = fuzz.wrapfds;
        fuzz.wrapfds = 0;
    }

    printf("Finished\n");

    return 0;
}