r17842: After talking to Simo, apply the next attempt to resolve the strnlen

problem. Timegm is the same. Simo says this is just a workaround, but it helps
for now. Feel free to revert.

Volker
(This used to be commit fd166ca0c079d83081bc1d631fe40b965c7873d4)

2 files changed, 47 insertions, 1 deletions

diff --git a/source4/lib/replace/config.m4 b/source4/lib/replace/config.m4
index 93f0bb34a7..adaba74568 100644
--- a/source4/lib/replace/config.m4
+++ b/source4/lib/replace/config.m4
@@ -50,7 +50,7 @@ AC_CHECK_HEADERS(sys/syslog.h syslog.h)
 AC_CHECK_FUNCS(seteuid setresuid setegid setresgid chroot bzero strerror)
 AC_CHECK_FUNCS(vsyslog setlinebuf mktime ftruncate chsize rename)
 AC_CHECK_FUNCS(waitpid strlcpy strlcat innetgr initgroups memmove strdup)
-AC_CHECK_FUNCS(pread pwrite strndup strcasestr strtok_r mkdtemp)
+AC_CHECK_FUNCS(pread pwrite strndup strnlen strcasestr strtok_r mkdtemp)
 AC_HAVE_DECL(setresuid, [#include <unistd.h>])
 AC_HAVE_DECL(setresgid, [#include <unistd.h>])
 AC_HAVE_DECL(errno, [#include <errno.h>])
diff --git a/source4/lib/replace/replace.c b/source4/lib/replace/replace.c
index b8f4bc1c3c..f8bd62109d 100644
--- a/source4/lib/replace/replace.c
+++ b/source4/lib/replace/replace.c
@@ -387,6 +387,20 @@ duplicate a string
 }
 #endif
 
+#ifndef HAVE_STRNLEN
+/**
+ Some platforms don't have strnlen
+**/
+
+ size_t strnlen(const char *s, size_t n)
+{
+	size_t i;
+	for (i=0; i<n && s[i] != '\0'; i++)
+		/* noop */ ;
+	return i;
+}
+#endif
+
 #ifndef HAVE_WAITPID
 int waitpid(pid_t pid,int *status,int options)
 {
@@ -519,3 +533,35 @@ char *strtok_r(char *s, const char *delim, char **save_ptr)
 	return token;
 }
 #endif
+
+#if !defined(HAVE_TIMEGM)
+
+static int is_leap(unsigned y)
+{
+	y += 1900;
+	return (y % 4) == 0 && ((y % 100) != 0 || (y % 400) == 0);
+}
+
+time_t timegm(struct tm *tm)
+{
+	static const unsigned ndays[2][12] ={
+		{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31},
+		{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}};
+	time_t res = 0;
+	unsigned i;
+	
+	for (i = 70; i < tm->tm_year; ++i)
+		res += is_leap(i) ? 366 : 365;
+	
+	for (i = 0; i < tm->tm_mon; ++i)
+		res += ndays[is_leap(tm->tm_year)][i];
+	res += tm->tm_mday - 1;
+	res *= 24;
+	res += tm->tm_hour;
+	res *= 60;
+	res += tm->tm_min;
+	res *= 60;
+	res += tm->tm_sec;
+	return res;
+}
+#endif