Merge pull request #53 from vanhauser-thc/code-cleanup

Code cleanup

1 files changed, 78 insertions, 0 deletions

diff --git a/src/afl-common.c b/src/afl-common.c
new file mode 100644
index 00000000..9f1f45eb
--- /dev/null
+++ b/src/afl-common.c
@@ -0,0 +1,78 @@
+/*
+ gather some functions common to multiple executables
+
+ detect_file_args
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <strings.h>
+
+#include "debug.h"
+#include "alloc-inl.h"
+
+/* Detect @@ in args. */
+#ifndef __glibc__
+#  include <unistd.h>
+#endif
+
+void detect_file_args(char** argv, u8* prog_in) {
+
+  u32 i = 0;
+#ifdef __GLIBC__
+  u8* cwd = getcwd(NULL, 0);                /* non portable glibc extension */
+#else
+  u8*   cwd;
+  char* buf;
+  long  size = pathconf(".", _PC_PATH_MAX);
+  if ((buf = (char*)malloc((size_t)size)) != NULL) {
+
+    cwd = getcwd(buf, (size_t)size);                    /* portable version */
+
+  } else {
+
+    PFATAL("getcwd() failed");
+    cwd = 0;                                          /* for dumb compilers */
+
+  }
+
+#endif
+
+  if (!cwd) PFATAL("getcwd() failed");
+
+  while (argv[i]) {
+
+    u8* aa_loc = strstr(argv[i], "@@");
+
+    if (aa_loc) {
+
+      u8 *aa_subst, *n_arg;
+
+      if (!prog_in) FATAL("@@ syntax is not supported by this tool.");
+
+      /* Be sure that we're always using fully-qualified paths. */
+
+      if (prog_in[0] == '/')
+        aa_subst = prog_in;
+      else
+        aa_subst = alloc_printf("%s/%s", cwd, prog_in);
+
+      /* Construct a replacement argv value. */
+
+      *aa_loc = 0;
+      n_arg = alloc_printf("%s%s%s", argv[i], aa_subst, aa_loc + 2);
+      argv[i] = n_arg;
+      *aa_loc = '@';
+
+      if (prog_in[0] != '/') ck_free(aa_subst);
+
+    }
+
+    i++;
+
+  }
+
+  free(cwd);                                                 /* not tracked */
+
+}
+