diff options
Diffstat (limited to 'runtime/Fortify')
-rw-r--r-- | runtime/Fortify/CMakeLists.txt | 28 | ||||
-rw-r--r-- | runtime/Fortify/fortify.c | 83 |
2 files changed, 111 insertions, 0 deletions
diff --git a/runtime/Fortify/CMakeLists.txt b/runtime/Fortify/CMakeLists.txt new file mode 100644 index 00000000..8e751f66 --- /dev/null +++ b/runtime/Fortify/CMakeLists.txt @@ -0,0 +1,28 @@ +#===------------------------------------------------------------------------===# +# +# The KLEE Symbolic Virtual Machine +# +# This file is distributed under the University of Illinois Open Source +# License. See LICENSE.TXT for details. +# +#===------------------------------------------------------------------------===# + +set(LIB_PREFIX "RuntimeFortify") +set(SRC_FILES + fortify.c + ../Freestanding/fortify-fs.c + ../klee-libc/fortify-klibc.c + ) + +# Add __NO_INLINE__ to prevent glibc from using inline definitions of some +# builtins (i.e. putchar and atoi). +set(ADDITIONAL_CC_FLAGS + -D__NO_INLINE__ + -std=gnu89 + ) + +# Build it +include("${CMAKE_SOURCE_DIR}/cmake/compile_bitcode_library.cmake") +prefix_with_path("${SRC_FILES}" "${CMAKE_CURRENT_SOURCE_DIR}/" prefixed_files) + +add_bitcode_library_targets("${LIB_PREFIX}" "${prefixed_files}" "${ADDITIONAL_CC_FLAGS}" "") diff --git a/runtime/Fortify/fortify.c b/runtime/Fortify/fortify.c new file mode 100644 index 00000000..a8d54fd8 --- /dev/null +++ b/runtime/Fortify/fortify.c @@ -0,0 +1,83 @@ +//===-- fortify.c ---------------------------------------------------------===// +// +// The KLEE Symbolic Virtual Machine +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "klee/klee.h" + +#include <limits.h> +#include <stddef.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <unistd.h> + +char *__fgets_chk(char *s, size_t size, int strsize, FILE *stream) { + return fgets(s, size, stream); +} + +ssize_t __pread_chk(int fd, void *buf, size_t nbytes, off_t offset, + size_t buflen) { + if (nbytes > buflen) + klee_report_error(__FILE__, __LINE__, "pread overflow", "ptr.err"); + + return pread(fd, buf, nbytes, offset); +} + +ssize_t __read_chk(int fd, void *buf, size_t nbytes, size_t buflen) { + if (nbytes > buflen) + klee_report_error(__FILE__, __LINE__, "read overflow", "ptr.err"); + + return read(fd, buf, nbytes); +} + +ssize_t __readlink_chk(const char *path, char *buf, size_t len, size_t buflen) { + if (len > buflen) + klee_report_error(__FILE__, __LINE__, "readlink overflow", "ptr.err"); + + return readlink(path, buf, len); +} + +char *__realpath_chk(const char *path, char *resolved_path, + size_t resolved_len) { + if (resolved_len < PATH_MAX) + klee_report_error(__FILE__, __LINE__, "realpath overflow", "ptr.err"); + + return realpath(path, resolved_path); +} + +ssize_t __recv_chk(int fd, void *buf, size_t len, size_t buflen, int flag) { + if (len > buflen) + klee_report_error(__FILE__, __LINE__, "recv overflow", "ptr.err"); + + return recv(fd, buf, len, flag); +} + +ssize_t __recvfrom_chk(int fd, void *buf, size_t len, size_t buflen, int flag, + struct sockaddr *from, socklen_t *fromlen) { + if (len > buflen) + klee_report_error(__FILE__, __LINE__, "recvfrom overflow", "ptr.err"); + + return recvfrom(fd, buf, len, flag, from, fromlen); +} + +char *__stpncpy_chk(char *dest, const char *src, size_t n, size_t destlen) { + if (n > destlen) + klee_report_error(__FILE__, __LINE__, "stpncpy overflow", "ptr.err"); + return stpncpy(dest, src, n); +} + +char *__strncat_chk(char *s1, const char *s2, size_t n, size_t s1len) { + return strncat(s1, s2, n); +} + +int __ttyname_r_chk(int fd, char *buf, size_t buflen, size_t nreal) { + if (buflen > nreal) + klee_report_error(__FILE__, __LINE__, "ttyname_r overflow", "ptr.err"); + return ttyname_r(fd, buf, nreal); +} |