Add fuzzing of utility functions

[project/cgi-io.git] / util.c

diff --git a/util.c b/util.c
index 9eb7b485e5fa698b64da260326ffdd44044ad6ce..e8627589b49af5613f2fd3bf236cc17571012d7a 100644 (file)
--- a/util.c
+++ b/util.c
@@ -5,6 +5,8 @@
 #include <string.h>
 #include <unistd.h>
 
+#include <stdio.h>
+
 #include "util.h"
 
 char **
@@ -80,12 +82,55 @@ parse_command(const char *cmdline)
        return argv;
 }
 
+char *
+postdecode_fields(char *postbuf, ssize_t len, char **fields, int n_fields)
+{
+       char *p;
+       int i, field, found = 0;
+
+       for (p = postbuf, i = 0; i <= len; i++)
+       {
+               if (postbuf[i] == '=')
+               {
+                       postbuf[i] = 0;
+
+                       for (field = 0; field < (n_fields * 2); field += 2)
+                       {
+                               if (!strcmp(p, fields[field]))
+                               {
+                                       fields[field + 1] = postbuf + i + 1;
+                                       found++;
+                               }
+                       }
+               }
+               else if (postbuf[i] == '&' || postbuf[i] == '\0')
+               {
+                       postbuf[i] = 0;
+
+                       if (found >= n_fields)
+                               break;
+
+                       p = postbuf + i + 1;
+               }
+       }
+
+       for (field = 0; field < (n_fields * 2); field += 2)
+       {
+               if (!urldecode(fields[field + 1]))
+               {
+                       free(postbuf);
+                       return NULL;
+               }
+       }
+
+       return postbuf;
+}
+
 char *
 postdecode(char **fields, int n_fields)
 {
        const char *var;
        char *p, *postbuf;
-       int i, field, found = 0;
        ssize_t len = 0, rlen = 0, content_length = 0;
 
        var = getenv("CONTENT_TYPE");
@@ -124,42 +169,7 @@ postdecode(char **fields, int n_fields)
                return NULL;
        }
 
-       for (p = postbuf, i = 0; i <= len; i++)
-       {
-               if (postbuf[i] == '=')
-               {
-                       postbuf[i] = 0;
-
-                       for (field = 0; field < (n_fields * 2); field += 2)
-                       {
-                               if (!strcmp(p, fields[field]))
-                               {
-                                       fields[field + 1] = postbuf + i + 1;
-                                       found++;
-                               }
-                       }
-               }
-               else if (postbuf[i] == '&' || postbuf[i] == '\0')
-               {
-                       postbuf[i] = 0;
-
-                       if (found >= n_fields)
-                               break;
-
-                       p = postbuf + i + 1;
-               }
-       }
-
-       for (field = 0; field < (n_fields * 2); field += 2)
-       {
-               if (!urldecode(fields[field + 1]))
-               {
-                       free(postbuf);
-                       return NULL;
-               }
-       }
-
-       return postbuf;
+       return postdecode_fields(postbuf, len, fields, n_fields);
 }
 
 char *