diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
commit | 69c6a41ffb878ef98c9378ed4b1634a404cfaa7f (patch) | |
tree | b2a4f704565d62fbb129ab9dc3b35977c50e6e7f /tests-fuzz | |
parent | Initial commit. (diff) | |
download | knot-upstream/2.7.6.tar.xz knot-upstream/2.7.6.zip |
Adding upstream version 2.7.6.upstream/2.7.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | tests-fuzz/Makefile.am | 102 | ||||
-rw-r--r-- | tests-fuzz/Makefile.in | 1409 | ||||
-rw-r--r-- | tests-fuzz/fuzz_dname_from_str.c | 39 | ||||
-rw-r--r-- | tests-fuzz/fuzz_dname_to_str.c | 31 | ||||
-rw-r--r-- | tests-fuzz/fuzz_packet.c | 33 | ||||
-rw-r--r-- | tests-fuzz/fuzz_zscanner.c | 31 | ||||
-rw-r--r-- | tests-fuzz/knotd_wrap/afl-loop.h | 21 | ||||
-rw-r--r-- | tests-fuzz/knotd_wrap/server.c | 27 | ||||
-rw-r--r-- | tests-fuzz/knotd_wrap/tcp-handler.c | 25 | ||||
-rw-r--r-- | tests-fuzz/knotd_wrap/udp-handler.c | 108 | ||||
-rw-r--r-- | tests-fuzz/main.c | 140 |
11 files changed, 1966 insertions, 0 deletions
diff --git a/tests-fuzz/Makefile.am b/tests-fuzz/Makefile.am new file mode 100644 index 0000000..38de37e --- /dev/null +++ b/tests-fuzz/Makefile.am @@ -0,0 +1,102 @@ +AM_CPPFLAGS = \ + -include $(top_builddir)/src/config.h \ + -I$(top_srcdir)/src \ + -DCONFIG_DIR='"${config_dir}"' \ + -DSTORAGE_DIR='"${storage_dir}"' \ + -DRUN_DIR='"${run_dir}"' \ + -DSRCDIR=\"$(abs_srcdir)\" + +FUZZERS = \ + fuzz_packet \ + fuzz_zscanner \ + fuzz_dname_to_str \ + fuzz_dname_from_str + +check_PROGRAMS = $(FUZZERS) + +if HAVE_DAEMON +# knotd_stdio (AFL) +check_PROGRAMS += knotd_stdio + +nodist_knotd_stdio_SOURCES = knotd_wrap/main.c + +knotd_stdio_SOURCES = \ + knotd_wrap/afl-loop.h \ + knotd_wrap/server.c \ + knotd_wrap/tcp-handler.c \ + knotd_wrap/udp-handler.c + +knotd_stdio_CPPFLAGS = $(AM_CPPFLAGS) $(liburcu_CFLAGS) +knotd_stdio_LDADD = $(top_builddir)/src/libknotd.la $(top_builddir)/src/libcontrib.la \ + $(liburcu_LIBS) $(cap_ng_LIBS) + +BUILT_SOURCES = knotd_wrap/main.c +CLEANFILES = knotd_wrap/main.c +knotd_wrap/main.c: $(top_builddir)/src/utils/knotd/main.c + @echo '#include "knotd_wrap/afl-loop.h"' > $@ + @$(SED) -e 's/for (;;)/while (__AFL_LOOP(10000))/' $(top_srcdir)/src/utils/knotd/main.c >> $@ +endif HAVE_DAEMON + +# Simple function wrappers (AFL, libFuzzer, tests) + +fuzz_packet_SOURCES = fuzz_packet.c +fuzz_packet_CPPFLAGS = $(AM_CPPFLAGS) +fuzz_packet_LDADD = $(top_builddir)/src/libknot.la + +fuzz_zscanner_SOURCES = fuzz_zscanner.c +fuzz_zscanner_CPPFLAGS = $(AM_CPPFLAGS) +fuzz_zscanner_LDADD = $(top_builddir)/src/libzscanner.la + +fuzz_dname_to_str_SOURCES = fuzz_dname_to_str.c +fuzz_dname_to_str_CPPFLAGS = $(AM_CPPFLAGS) +fuzz_dname_to_str_LDADD = $(top_builddir)/src/libknot.la + +fuzz_dname_from_str_SOURCES = fuzz_dname_from_str.c +fuzz_dname_from_str_CPPFLAGS = $(AM_CPPFLAGS) +fuzz_dname_from_str_LDADD = $(top_builddir)/src/libknot.la + +if OSS_FUZZ + +# CFLAGS, LDFLAGS, etc. are defined by the oss-fuzz environment; just link +# in the fuzzing engine + +fuzz_packet_LDADD += ${LIB_FUZZING_ENGINE} -lc++ +fuzz_zscanner_LDADD += ${LIB_FUZZING_ENGINE} -lc++ +fuzz_dname_to_str_LDADD += ${LIB_FUZZING_ENGINE} -lc++ +fuzz_dname_from_str_LDADD += ${LIB_FUZZING_ENGINE} -lc++ + +else + +if FUZZER + +fuzz_packet_CPPFLAGS += ${fuzzer_CFLAGS} +fuzz_packet_LDFLAGS = ${fuzzer_LDFLAGS} + +fuzz_zscanner_CPPFLAGS += ${fuzzer_CFLAGS} +fuzz_zscanner_LDFLAGS = ${fuzzer_LDFLAGS} + +fuzz_dname_to_str_CPPFLAGS += ${fuzzer_CFLAGS} +fuzz_dname_to_str_LDFLAGS = ${fuzzer_LDFLAGS} + +fuzz_dname_from_str_CPPFLAGS += ${fuzzer_CFLAGS} +fuzz_dname_from_str_LDFLAGS = ${fuzzer_LDFLAGS} + +# Ensure that fuzzers execute successfully with a benign input + +TESTS = check/check_fuzzers.test +EXTRA_DIST = check/check_fuzzers.test + +else + +fuzz_packet_SOURCES += main.c +fuzz_zscanner_SOURCES += main.c +fuzz_dname_to_str_SOURCES += main.c +fuzz_dname_from_str_SOURCES += main.c + +TESTS = $(FUZZERS) + +endif # if FUZZER + +endif # if OSS_FUZZ + +check-compile: $(check_PROGRAMS) diff --git a/tests-fuzz/Makefile.in b/tests-fuzz/Makefile.in new file mode 100644 index 0000000..52f99b2 --- /dev/null +++ b/tests-fuzz/Makefile.in @@ -0,0 +1,1409 @@ +# Makefile.in generated by automake 1.15 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2014 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(MAKELEVEL)'; then \ + false; \ + elif test -n '$(MAKE_HOST)'; then \ + true; \ + elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \ + true; \ + else \ + false; \ + fi; \ +} +am__make_running_with_option = \ + case $${target_option-} in \ + ?) ;; \ + *) echo "am__make_running_with_option: internal error: invalid" \ + "target option '$${target_option-}' specified" >&2; \ + exit 1;; \ + esac; \ + has_opt=no; \ + sane_makeflags=$$MAKEFLAGS; \ + if $(am__is_gnu_make); then \ + sane_makeflags=$$MFLAGS; \ + else \ + case $$MAKEFLAGS in \ + *\\[\ \ ]*) \ + bs=\\; \ + sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \ + | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \ + esac; \ + fi; \ + skip_next=no; \ + strip_trailopt () \ + { \ + flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \ + }; \ + for flg in $$sane_makeflags; do \ + test $$skip_next = yes && { skip_next=no; continue; }; \ + case $$flg in \ + *=*|--*) continue;; \ + -*I) strip_trailopt 'I'; skip_next=yes;; \ + -*I?*) strip_trailopt 'I';; \ + -*O) strip_trailopt 'O'; skip_next=yes;; \ + -*O?*) strip_trailopt 'O';; \ + -*l) strip_trailopt 'l'; skip_next=yes;; \ + -*l?*) strip_trailopt 'l';; \ + -[dEDm]) skip_next=yes;; \ + -[JT]) skip_next=yes;; \ + esac; \ + case $$flg in \ + *$$target_option*) has_opt=yes; break;; \ + esac; \ + done; \ + test $$has_opt = yes +am__make_dryrun = (target_option=n; $(am__make_running_with_option)) +am__make_keepgoing = (target_option=k; $(am__make_running_with_option)) +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) + +# knotd_stdio (AFL) +@HAVE_DAEMON_TRUE@am__append_1 = knotd_stdio + +# 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knotd_stdio$(EXEEXT) +am__fuzz_dname_from_str_SOURCES_DIST = fuzz_dname_from_str.c main.c +@FUZZER_FALSE@@OSS_FUZZ_FALSE@am__objects_1 = fuzz_dname_from_str-main.$(OBJEXT) +am_fuzz_dname_from_str_OBJECTS = \ + fuzz_dname_from_str-fuzz_dname_from_str.$(OBJEXT) \ + $(am__objects_1) +fuzz_dname_from_str_OBJECTS = $(am_fuzz_dname_from_str_OBJECTS) +am__DEPENDENCIES_1 = +fuzz_dname_from_str_DEPENDENCIES = $(top_builddir)/src/libknot.la \ + $(am__DEPENDENCIES_1) +AM_V_lt = $(am__v_lt_@AM_V@) +am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@) +am__v_lt_0 = --silent +am__v_lt_1 = +fuzz_dname_from_str_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC \ + $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \ + $(AM_CFLAGS) $(CFLAGS) $(fuzz_dname_from_str_LDFLAGS) \ + $(LDFLAGS) -o $@ +am__fuzz_dname_to_str_SOURCES_DIST = fuzz_dname_to_str.c main.c +@FUZZER_FALSE@@OSS_FUZZ_FALSE@am__objects_2 = fuzz_dname_to_str-main.$(OBJEXT) +am_fuzz_dname_to_str_OBJECTS = \ + fuzz_dname_to_str-fuzz_dname_to_str.$(OBJEXT) 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without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <stdlib.h> +#include <string.h> + +#include "libknot/dname.h" + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + // Prepare 0-terminated dname string. + char *txt = malloc(size + 1); + if (txt == NULL) { + return 0; + } + memcpy(txt, data, size); + txt[size] = '\0'; + + // Transform the input. + uint8_t dname[KNOT_DNAME_MAXLEN]; + (void)knot_dname_from_str(dname, txt, sizeof(dname)); + + free(txt); + + return 0; +} diff --git a/tests-fuzz/fuzz_dname_to_str.c b/tests-fuzz/fuzz_dname_to_str.c new file mode 100644 index 0000000..1cf7fc0 --- /dev/null +++ b/tests-fuzz/fuzz_dname_to_str.c @@ -0,0 +1,31 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "libknot/dname.h" + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + // Skip invalid dnames. + if (knot_dname_wire_check(data, data + size, NULL) <= 0) { + return 0; + } + + // Transform the input. + char txt[KNOT_DNAME_TXT_MAXLEN + 1]; + (void)knot_dname_to_str(txt, (const knot_dname_t *)data, sizeof(txt)); + + return 0; +} diff --git a/tests-fuzz/fuzz_packet.c b/tests-fuzz/fuzz_packet.c new file mode 100644 index 0000000..61362c2 --- /dev/null +++ b/tests-fuzz/fuzz_packet.c @@ -0,0 +1,33 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdint.h> + +#include "libknot/libknot.h" + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + uint8_t copy[size]; + memcpy(copy, data, size); + + knot_pkt_t *pkt = knot_pkt_new(copy, size, NULL); + if (pkt != NULL) { + knot_pkt_parse(pkt, 0); + knot_pkt_free(pkt); + } + + return 0; +} diff --git a/tests-fuzz/fuzz_zscanner.c b/tests-fuzz/fuzz_zscanner.c new file mode 100644 index 0000000..cb89545 --- /dev/null +++ b/tests-fuzz/fuzz_zscanner.c @@ -0,0 +1,31 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdint.h> + +#include "libzscanner/scanner.h" + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + zs_scanner_t s; + if (zs_init(&s, ".", 1, 0) == 0 && + zs_set_input_string(&s, (const char *)data, size) == 0) { + zs_parse_all(&s); + } + zs_deinit(&s); + + return 0; +} diff --git a/tests-fuzz/knotd_wrap/afl-loop.h b/tests-fuzz/knotd_wrap/afl-loop.h new file mode 100644 index 0000000..0515b3a --- /dev/null +++ b/tests-fuzz/knotd_wrap/afl-loop.h @@ -0,0 +1,21 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#pragma once + +#ifndef __AFL_LOOP +#define __AFL_LOOP(x) (0) +#endif diff --git a/tests-fuzz/knotd_wrap/server.c b/tests-fuzz/knotd_wrap/server.c new file mode 100644 index 0000000..2a75cd1 --- /dev/null +++ b/tests-fuzz/knotd_wrap/server.c @@ -0,0 +1,27 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#define server_reconfigure orig_server_reconfigure +#include "knot/server/server.c" +#undef server_reconfigure + +extern void udp_master_init_stdio(server_t *server); + +void server_reconfigure(conf_t *conf, server_t *server) +{ + orig_server_reconfigure(conf, server); + udp_master_init_stdio(server); +} diff --git a/tests-fuzz/knotd_wrap/tcp-handler.c b/tests-fuzz/knotd_wrap/tcp-handler.c new file mode 100644 index 0000000..fca9cf5 --- /dev/null +++ b/tests-fuzz/knotd_wrap/tcp-handler.c @@ -0,0 +1,25 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#define tcp_master orig_tcp_master +#include "knot/server/tcp-handler.c" +#undef tcp_master + +int tcp_master(dthread_t *thread) +{ + log_info("AFL, empty TCP handler"); + return 0; +} diff --git a/tests-fuzz/knotd_wrap/udp-handler.c b/tests-fuzz/knotd_wrap/udp-handler.c new file mode 100644 index 0000000..8f6401c --- /dev/null +++ b/tests-fuzz/knotd_wrap/udp-handler.c @@ -0,0 +1,108 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "knot/server/udp-handler.c" +#include "knot/common/log.h" + +typedef struct { + struct iovec iov[NBUFS]; + uint8_t buf[NBUFS][KNOT_WIRE_MAX_PKTSIZE]; + struct sockaddr_storage addr; + bool afl_persistent; +} udp_stdin_t; + +static inline void next(udp_stdin_t *rq) +{ + if (rq->afl_persistent) { + raise(SIGSTOP); + } else { + exit(0); + } +} + +static void *udp_stdin_init(void) +{ + udp_stdin_t *rq = calloc(1, sizeof(udp_stdin_t)); + if (rq == NULL) { + return NULL; + } + + for (unsigned i = 0; i < NBUFS; ++i) { + rq->iov[i].iov_base = rq->buf[i]; + rq->iov[i].iov_len = KNOT_WIRE_MAX_PKTSIZE; + } + + struct sockaddr_in *a = (struct sockaddr_in *)&rq->addr; + a->sin_family = AF_INET; + a->sin_addr.s_addr = IN_LOOPBACKNET; + a->sin_port = 42; + + rq->afl_persistent = getenv("AFL_PERSISTENT") != NULL; + + return rq; +} + +static void udp_stdin_deinit(void *d) +{ + free(d); +} + +static int udp_stdin_recv(int fd, void *d) +{ + udp_stdin_t *rq = (udp_stdin_t *)d; + rq->iov[RX].iov_len = fread(rq->iov[RX].iov_base, 1, + KNOT_WIRE_MAX_PKTSIZE, stdin); + if (rq->iov[RX].iov_len == 0) { + next(rq); + } + + return rq->iov[RX].iov_len; +} + +static int udp_stdin_handle(udp_context_t *ctx, void *d) +{ + udp_stdin_t *rq = (udp_stdin_t *)d; + udp_handle(ctx, STDIN_FILENO, &rq->addr, &rq->iov[RX], &rq->iov[TX]); + return 0; +} + +static int udp_stdin_send(void *d) +{ + udp_stdin_t *rq = (udp_stdin_t *)d; + next(rq); + return 0; +} + +void udp_master_init_stdio(server_t *server) { + + log_info("AFL, UDP handler listening on stdin"); + + // Register dummy interface to server. + iface_t *ifc = calloc(1, sizeof(*ifc)); + assert(ifc); + ifc->fd_udp = calloc(1, sizeof(*ifc->fd_udp)); + assert(ifc->fd_udp); + ifc->fd_udp[0] = STDIN_FILENO; + ifc->fd_udp_count = 1; + + add_tail(&server->ifaces->l, (node_t *)ifc); + + _udp_init = udp_stdin_init; + _udp_recv = udp_stdin_recv; + _udp_handle = udp_stdin_handle; + _udp_send = udp_stdin_send; + _udp_deinit = udp_stdin_deinit; +} diff --git a/tests-fuzz/main.c b/tests-fuzz/main.c new file mode 100644 index 0000000..e8eb428 --- /dev/null +++ b/tests-fuzz/main.c @@ -0,0 +1,140 @@ +/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + * Copyright (C) 2017 Tim Ruehsen + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> +#include <fcntl.h> +#include <errno.h> +#include <sys/stat.h> + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size); + +#ifndef __AFL_LOOP + +#include <dirent.h> + +static void test_all_from(const char *dirname) +{ + DIR *dirp = opendir(dirname); + if (dirp == NULL) { + return; + } + + struct dirent *dp; + while ((dp = readdir(dirp))) { + if (*dp->d_name == '.') { + continue; + } + + char fname[strlen(dirname) + strlen(dp->d_name) + 2]; + int ret = snprintf(fname, sizeof(fname), "%s/%s", dirname, dp->d_name); + if (ret < 0 || ret >= sizeof(fname)) { + fprintf(stderr, "Invalid path %s/%s\n", dirname, dp->d_name); + } + + int fd; + if ((fd = open(fname, O_RDONLY)) == -1) { + fprintf(stderr, "Failed to open %s (%d)\n", fname, errno); + continue; + } + + struct stat st; + if (fstat(fd, &st) != 0) { + fprintf(stderr, "Failed to stat %d (%d)\n", fd, errno); + close(fd); + continue; + } + + uint8_t *data = malloc(st.st_size); + if (data == NULL) { + fprintf(stderr, "Failed to stat %d (%d)\n", fd, ENOMEM); + close(fd); + continue; + } + + ssize_t n; + if ((n = read(fd, data, st.st_size)) == st.st_size) { + printf("testing %llu bytes from '%s'\n", (unsigned long long) st.st_size, fname); + fflush(stdout); + LLVMFuzzerTestOneInput(data, st.st_size); + fflush(stderr); + } else { + fprintf(stderr, "Failed to read %llu bytes from %s (%d), got %zd\n", + (unsigned long long) st.st_size, fname, errno, n); + } + + free(data); + close(fd); + } + closedir(dirp); +} + +int main(int argc, char **argv) +{ + const char *target = strrchr(argv[0], '/'); + target = target ? target + 1 : argv[0]; + + char corporadir[sizeof(SRCDIR) + 1 + strlen(target) + 8]; + + if (strncmp(target, "lt-", 3) == 0) { + target += 3; + } + + int ret = snprintf(corporadir, sizeof(corporadir), SRCDIR "/%s.in", target); + if (ret < 0 || ret >= sizeof(corporadir)) { + fprintf(stderr, "Invalid path %s/%s\n", SRCDIR "/%s.in", target); + } + + test_all_from(corporadir); + + ret = snprintf(corporadir, sizeof(corporadir), SRCDIR "/%s.repro", target); + if (ret < 0 || ret >= sizeof(corporadir)) { + fprintf(stderr, "Invalid path %s/%s\n", SRCDIR "/%s.repro", target); + } + + test_all_from(corporadir); + + return 0; +} + +#else + +int main(int argc, char **argv) +{ + unsigned char buf[64 * 1024]; + + while (__AFL_LOOP(10000)) { + int ret = fread(buf, 1, sizeof(buf), stdin); + if (ret < 0) { + return 0; + } + + LLVMFuzzerTestOneInput(buf, ret); + } + + return 0; +} + +#endif /* __AFL_LOOP */ |