Yes, strcasecmp is always available, configure.

configure

@@ -5883,19 +5883,6 @@ $as_echo "#define HAVE_EXPLICIT_BZERO /**/" >>confdefs.h
 fi
 done
 
-for ac_func in strcasecmp
-do :
-  ac_fn_c_check_func "$LINENO" "strcasecmp" "ac_cv_func_strcasecmp"
-if test "x$ac_cv_func_strcasecmp" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_STRCASECMP 1
-_ACEOF
-
-$as_echo "#define GOT_STRCASECMP /**/" >>confdefs.h
-
-fi
-done
-
 for ac_func in syslog
 do :
   ac_fn_c_check_func "$LINENO" "syslog" "ac_cv_func_syslog"

configure.ac

@@ -359,7 +359,6 @@ AC_CHECK_FUNCS(strtok,,AC_DEFINE([NEED_STRTOK], [], [Define if you need the strt
 AC_CHECK_FUNCS(strerror,,AC_DEFINE([NEED_STRERROR], [], [Define if you need the strerror function.]))
 AC_CHECK_FUNCS(strtoul,,STRTOUL="strtoul.o")
 AC_CHECK_FUNCS(explicit_bzero,AC_DEFINE([HAVE_EXPLICIT_BZERO], [], [Define if you have explicit_bzero]))
-AC_CHECK_FUNCS(strcasecmp,AC_DEFINE([GOT_STRCASECMP], [], [Define if you have strcasecmp]))
 AC_CHECK_FUNCS(syslog,AC_DEFINE([HAVE_SYSLOG], [], [Define if you have syslog]))
 AC_SUBST(STRTOUL)
 AC_SUBST(CRYPTOLIB)

include/dns.h

@@ -1,16 +1,6 @@
 /* OMG... OMG! WHAT AN INCLUDE HORROR !!! */
-#undef strcasecmp
-#undef strncasecmp
 #include <ares.h>
 #include <ares_version.h>
-#undef strcasecmp
-#undef strncasecmp
-#ifndef GOT_STRCASECMP
-#define	strcasecmp	mycmp
-#define	strncasecmp	myncmp
-#endif
-
-
 
 typedef enum {
 	DNSREQ_CLIENT = 1,

include/setup.h.in

@@ -25,9 +25,6 @@
 /* Define if you have the <glob.h> header file. */
 #undef GLOBH
 
-/* Define if you have strcasecmp */
-#undef GOT_STRCASECMP
-
 /* Define if ssl library has SSL_CTX_set1_curves_list */
 #undef HAS_SSL_CTX_SET1_CURVES_LIST
 
@@ -97,9 +94,6 @@
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
-/* Define to 1 if you have the `strcasecmp' function. */
-#undef HAVE_STRCASECMP
-
 /* Define to 1 if you have the `strerror' function. */
 #undef HAVE_STRERROR
 

include/sys.h

@@ -65,10 +65,6 @@
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #endif
-#ifndef GOT_STRCASECMP
-#define	strcasecmp	mycmp
-#define	strncasecmp	myncmp
-#endif
 
 #ifndef _WIN32
 #include <sys/time.h>

include/windows/setup.h

@@ -41,7 +41,6 @@
 #define PREFIX_AQ
 #define LIST_SHOW_MODES
 #ifndef mode_t
-#define GOT_STRCASECMP
 #define strcasecmp _strcasecmp
 #define strncasecmp _strncasecmp
 #define HAVE_EXPLICIT_BZERO

src/crule.c

@@ -49,7 +49,6 @@ ID_Copyright("(C) Tony Vincell");
 #include <stdio.h>
 #include <string.h>
 #define BadPtr(x) (!(x) || (*(x) == '\0'))
-#define mycmp strcasecmp
 #endif
 
 #if defined(CR_DEBUG) || defined(CR_CHKCONF)
@@ -562,7 +561,7 @@ int  crule_parsefunction(crule_treeptr *funcrootp, int *next_tokp, char **rulept
 	{
 		for (funcnum = 0;; funcnum++)
 		{
-			if (mycmp(crule_funclist[funcnum].name, funcname) == 0)
+			if (strcasecmp(crule_funclist[funcnum].name, funcname) == 0)
 				break;
 			if (crule_funclist[funcnum].name[0] == '\0')
 				return (CR_UNKNWFUNC);

src/match.c

@@ -203,10 +203,12 @@ char *collapse(char *pattern)
 }
 
 
-/*
- *  Case insensitive comparison of two NULL terminated strings.
- *
- *	returns	 0, if s1 equal to s2
+/* Case insensitive comparison of two NULL terminated strings,
+ * using the "IRC nick comparisson" rules. Or, well, partially
+ * anyway.
+ * Should be used for NICK-related comparissons. And probably
+ * not even then, since this does not deal with multibyte.
+ * @returns 	 0, if s1 equal to s2
  *		<0, if s1 lexicographically less than s2
  *		>0, if s1 lexicographically greater than s2
  */
@@ -229,27 +231,6 @@ int  smycmp(const char *s1, const char *s2)
 	return (res);
 }
 
-
-int  myncmp(const char *str1, const char *str2, int n)
-{
-	u_char *s1;
-	u_char *s2;
-	int  res;
-
-	s1 = (u_char *)str1;
-	s2 = (u_char *)str2;
-
-	while ((res = toupper(*s1) - toupper(*s2)) == 0)
-	{
-		s1++;
-		s2++;
-		n--;
-		if (n == 0 || (*s1 == '\0' && *s2 == '\0'))
-			return 0;
-	}
-	return (res);
-}
-
 u_char tolowertab[] = {
 	0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa,
 	0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14,

src/modules/dccallow.c

@@ -133,7 +133,7 @@ CMD_FUNC(m_dccallow)
 			}
 			del_dccallow(sptr, acptr);
 		} else
-		if (!didlist && !myncmp(s, "list", 4))
+		if (!didlist && !strncasecmp(s, "list", 4))
 		{
 			didanything = didlist = 1;
 			sendnumericfmt(sptr, RPL_DCCINFO, "The following users are on your dcc allow list:");
@@ -147,7 +147,7 @@ CMD_FUNC(m_dccallow)
 			}
 			sendnumeric(sptr, RPL_ENDOFDCCLIST, s);
 		} else
-		if (!didhelp && !myncmp(s, "help", 4))
+		if (!didhelp && !strncasecmp(s, "help", 4))
 		{
 			didanything = didhelp = 1;
 			for(ptr = dcc_help; *ptr; ptr++)

src/modules/message.c

@@ -581,9 +581,9 @@ int size_string, ret;
 
 	ctcp = &text[1];
 	/* Most likely a DCC send .. */
-	if (!myncmp(ctcp, "DCC SEND ", 9))
+	if (!strncasecmp(ctcp, "DCC SEND ", 9))
 		ctcp = text + 10;
-	else if (!myncmp(ctcp, "DCC RESUME ", 11))
+	else if (!strncasecmp(ctcp, "DCC RESUME ", 11))
 		ctcp = text + 12;
 	else
 		return 1; /* something else, allow */
@@ -660,7 +660,7 @@ int size_string;
 
 	ctcp = &text[1];
 	/* Most likely a DCC send .. */
-	if (!myncmp(ctcp, "DCC SEND ", 9))
+	if (!strncasecmp(ctcp, "DCC SEND ", 9))
 		ctcp = text + 10;
 	else
 		return 1; /* something else, allow */