From 7eb990d5ce5177913604fa7de8b6f49a0fa72251 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Sat, 16 Feb 2008 20:50:49 +0000
Subject: [PATCH]  r14212@tombo:  nickm | 2008-02-16 15:29:17 -0500  Add new
 evutil_strtoll() function so we can apply 64-bit content-length patch from
 Scott Lamb in a portable way. [Backport to 1.4]

svn:r642
---
 ChangeLog      |  1 +
 configure.in   |  4 +++-
 evutil.c       | 30 ++++++++++++++++++++++++++++++
 evutil.h       | 11 +++++++++++
 test/regress.c | 28 ++++++++++++++++++++++++++++
 5 files changed, 73 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index be4cc172..75c97da1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -4,6 +4,7 @@ Changes in 1.4.2:
  o devpoll and evport need reinit; tested by W.C.A Wijngaards
  o event_base_get_method; from Springande Ulv
  o Send CRLF after each chunk in HTTP output, for compliance with RFC2626.  Patch from "propanbutan".  Fixes bug 1894184.
+ o Add a int64_t parsing function, with unit tests, so we can apply Scott Lamb's fix to allow large HTTP values.
 
 Changes in 1.4.1-beta:
  o free minheap on event_base_free(); from Christopher Layne
diff --git a/configure.in b/configure.in
index d2f1f21d..c7cad49c 100644
--- a/configure.in
+++ b/configure.in
@@ -133,7 +133,9 @@ AC_C_INLINE
 AC_HEADER_TIME
 
 dnl Checks for library functions.
-AC_CHECK_FUNCS(gettimeofday vasprintf fcntl clock_gettime strtok_r strsep getaddrinfo getnameinfo strlcpy inet_ntop signal sigaction)
+AC_CHECK_FUNCS(gettimeofday vasprintf fcntl clock_gettime strtok_r strsep getaddrinfo getnameinfo strlcpy inet_ntop signal sigaction strtoll)
+
+AC_CHECK_SIZEOF(long)
 
 if test "x$ac_cv_func_clock_gettime" = "xyes"; then
    AC_DEFINE(DNS_USE_CPU_CLOCK_FOR_ID, 1, [Define if clock_gettime is available in libc])
diff --git a/evutil.c b/evutil.c
index 47136f08..e536b120 100644
--- a/evutil.c
+++ b/evutil.c
@@ -46,6 +46,9 @@
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 #include <errno.h>
 
 #include "evutil.h"
@@ -166,3 +169,30 @@ evutil_make_socket_nonblocking(int fd)
 	return 0;
 }
 
+ev_int64_t
+evutil_strtoll(const char *s, char **endptr, int base)
+{
+#ifdef HAVE_STRTOLL
+	return (ev_int64_t)strtoll(s, endptr, base);
+#elif SIZEOF_LONG == 8
+	return (ev_int64_t)strtol(s, endptr, base);
+#elif defined(WIN32) && defined(_MSC_VER) && _MSC_VER < 1300
+	/* XXXX on old versions of MS APIs, we only support base
+	 * 10. */
+	ev_int64_t r;
+	if (base != 10)
+		return 0;
+	r = (ev_int64_t) _atoi64(s);
+	while (isspace(*s))
+		++s;
+	while (isdigit(*s))
+		++s;
+	if (endptr)
+		*endptr = (char*) s;
+	return r;
+#elif defined(WIN32)
+	return (ev_int64_t) _strtoi64(s, endptr, base);
+#else
+#error "I don't know how to parse 64-bit integers."
+#endif
+}
diff --git a/evutil.h b/evutil.h
index d156e663..161ab216 100644
--- a/evutil.h
+++ b/evutil.h
@@ -115,13 +115,24 @@ int evutil_make_socket_nonblocking(int sock);
 #define ev_uint32_t	uint32_t
 #define ev_uint16_t	uint16_t
 #define ev_uint8_t	uint8_t
+#define ev_int64_t	int64_t
+#define ev_int32_t	int32_t
+#define ev_int16_t	int16_t
+#define ev_int8_t	int8_t
 #elif defined(WIN32)
 #define ev_uint64_t	__uint64_t
 #define ev_uint32_t	unsigned int
 #define ev_uint16_t	unsigned short
 #define ev_uint8_t	unsigned char
+#define ev_int64_t	__int64_t
+#define ev_int32_t	signed int
+#define ev_int16_t	signed short
+#define ev_int8_t	signed char
 #endif
 
+/* big-int related functions */
+ev_int64_t evutil_strtoll(const char *s, char **endptr, int base);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/test/regress.c b/test/regress.c
index 383e3268..0c8d92bd 100644
--- a/test/regress.c
+++ b/test/regress.c
@@ -1336,6 +1336,32 @@ rpc_test(void)
 	fprintf(stdout, "OK\n");
 }
 
+static void
+test_evutil_strtoll(void)
+{
+        const char *s;
+        char *endptr;
+        setup_test("evutil_stroll: ");
+        test_ok = 0;
+
+        if (evutil_strtoll("5000000000", NULL, 10) != ((ev_int64_t)5000000)*1000)
+                goto err;
+        if (evutil_strtoll("-5000000000", NULL, 10) != ((ev_int64_t)5000000)*-1000)
+                goto err;
+        s = " 99999stuff";
+        if (evutil_strtoll(s, &endptr, 10) != (ev_int64_t)99999)
+                goto err;
+        if (endptr != s+6)
+                goto err;
+        if (evutil_strtoll("foo", NULL, 10) != 0)
+                goto err;
+
+        test_ok = 1;
+ err:
+        cleanup_test();
+}
+
+
 int
 main (int argc, char **argv)
 {
@@ -1354,6 +1380,8 @@ main (int argc, char **argv)
 	/* Initalize the event library */
 	global_base = event_init();
 
+        test_evutil_strtoll();
+
 	/* use the global event base and need to be called first */
 	test_priorities(1);
 	test_priorities(2);