Initial Commit

openssl-1.0.2f/demos/tunala/breakage.c

@@ -0,0 +1,68 @@
+#include "tunala.h"
+
+int int_strtoul(const char *str, unsigned long *val)
+{
+#ifdef HAVE_STRTOUL
+    char *tmp;
+    unsigned long ret = strtoul(str, &tmp, 10);
+    if ((str == tmp) || (*tmp != '\0'))
+        /* The value didn't parse cleanly */
+        return 0;
+    if (ret == ULONG_MAX)
+        /* We hit a limit */
+        return 0;
+    *val = ret;
+    return 1;
+#else
+    char buf[2];
+    unsigned long ret = 0;
+    buf[1] = '\0';
+    if (str == '\0')
+        /* An empty string ... */
+        return 0;
+    while (*str != '\0') {
+        /*
+         * We have to multiply 'ret' by 10 before absorbing the next digit.
+         * If this will overflow, catch it now.
+         */
+        if (ret && (((ULONG_MAX + 10) / ret) < 10))
+            return 0;
+        ret *= 10;
+        if (!isdigit(*str))
+            return 0;
+        buf[0] = *str;
+        ret += atoi(buf);
+        str++;
+    }
+    *val = ret;
+    return 1;
+#endif
+}
+
+#ifndef HAVE_STRSTR
+char *int_strstr(const char *haystack, const char *needle)
+{
+    const char *sub_haystack = haystack, *sub_needle = needle;
+    unsigned int offset = 0;
+    if (!needle)
+        return haystack;
+    if (!haystack)
+        return NULL;
+    while ((*sub_haystack != '\0') && (*sub_needle != '\0')) {
+        if (sub_haystack[offset] == sub_needle) {
+            /* sub_haystack is still a candidate */
+            offset++;
+            sub_needle++;
+        } else {
+            /* sub_haystack is no longer a possibility */
+            sub_haystack++;
+            offset = 0;
+            sub_needle = needle;
+        }
+    }
+    if (*sub_haystack == '\0')
+        /* Found nothing */
+        return NULL;
+    return sub_haystack;
+}
+#endif