diff --git a/asterisk.c b/asterisk.c
index b30bf607e2d9514bd0147003a0de1b12611a9579..84bac6c89cf769c44212e04ea74f613e824cb52b 100644
--- a/asterisk.c
+++ b/asterisk.c
@@ -657,7 +657,7 @@ int ast_safe_system(const char *s)
 		/* Close file descriptors and launch system command */
 		for (x = STDERR_FILENO + 1; x < 4096; x++)
 			close(x);
-		execl("/bin/sh", "/bin/sh", "-c", s, NULL);
+		execl("/bin/sh", "/bin/sh", "-c", s, (char *) NULL);
 		exit(1);
 	} else if (pid > 0) {
 		for(;;) {
diff --git a/codecs/gsm/src/preprocess.c b/codecs/gsm/src/preprocess.c
index bbfe3146ab5d01a689590b3a7cb998b0712fd7d5..fe63d678aa29b67d14e60fc2ac811cbfea5af655 100644
--- a/codecs/gsm/src/preprocess.c
+++ b/codecs/gsm/src/preprocess.c
@@ -36,19 +36,13 @@ void Gsm_Preprocess P3((S, s, so),
 	word		 * s,
 	word 		 * so )		/* [0..159] 	IN/OUT	*/
 {
-
-	word       z1 = S->z1;
-	longword L_z2 = S->L_z2;
-	word 	   mp = S->mp;
-
+	word       	z1 = S->z1;
+	longword 	L_z2 = S->L_z2;
+	word 	   	mp = S->mp;
 	word 	   	s1;
-
-
 	word		SO;
-
 	ulongword	utmp;		/* for L_ADD */
-
-	register int		k = 160;
+	register int	k = 160;
 
 	while (k--) {
 
diff --git a/include/asterisk/endian.h b/include/asterisk/endian.h
index 55108b4e16161ef6616e8c074c4d9349bc7a6ede..98bff15a2473aa6aa41764c88b61ab99b5353281 100644
--- a/include/asterisk/endian.h
+++ b/include/asterisk/endian.h
@@ -33,9 +33,6 @@
 #ifdef __linux__
 #include <endian.h>
 #elif defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__)
-#if defined(__OpenBSD__)
-#include <machine/types.h>
-#endif /* __OpenBSD__ */
 #include <machine/endian.h>
 #define __BYTE_ORDER BYTE_ORDER
 #define __LITTLE_ENDIAN LITTLE_ENDIAN
diff --git a/include/asterisk/stringfields.h b/include/asterisk/stringfields.h
index cb364d608a71203bcb7377ea6b30813f931eed07..5a9a58f82043d789fa7eb933feb2542777f6e688 100644
--- a/include/asterisk/stringfields.h
+++ b/include/asterisk/stringfields.h
@@ -171,7 +171,7 @@ void __ast_string_field_index_build(struct ast_string_field_mgr *mgr,
   \brief Declare a string field
   \param name The field name
 */
-#define AST_STRING_FIELD(name) const ast_string_field name;
+#define AST_STRING_FIELD(name) const ast_string_field name
 
 /*!
   \brief Declare the fields needed in a structure
@@ -181,7 +181,7 @@ void __ast_string_field_index_build(struct ast_string_field_mgr *mgr,
 	ast_string_field __begin_field[0]; \
 	field_list \
 	ast_string_field __end_field[0]; \
-	struct ast_string_field_mgr __field_mgr;
+	struct ast_string_field_mgr __field_mgr
 
 /*!
   \brief Get the number of string fields in a structure
diff --git a/pbx/Makefile b/pbx/Makefile
index c6332d669cff8ce33990bd74dd40de109d741d66..e8325e390bb0dac2aed82d9a93cd5899b459f083 100644
--- a/pbx/Makefile
+++ b/pbx/Makefile
@@ -65,7 +65,7 @@ ael/aelbison.o: ael/ael.tab.c ael/ael.tab.h ../include/asterisk/ael_structs.h
 	$(CC) $(CFLAGS) -I. -c -o ael/aelbison.o ael/ael.tab.c
 
 ael/ael_lex.c:
-	(cd ael; flex ael.flex)
+	(cd ael; flex ael.flex; sed -i -e "/begin standard C headers/i#include \"asterisk.h\"" ael_lex.c)
 
 ael/ael.tab.c ael/ael.tab.h:
 	(cd ael; bison -v -d ael.y)
diff --git a/pbx/ael/ael.flex b/pbx/ael/ael.flex
index ad3530c988b9eb9cb243af20387f0e893c2e5c47..4bac6f0a801860eaa16d7d2be2949e2192975765 100644
--- a/pbx/ael/ael.flex
+++ b/pbx/ael/ael.flex
@@ -56,8 +56,6 @@
 %option bison-locations
 
 %{
-#include "asterisk.h"
-
 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 
 #include <sys/types.h>
@@ -65,6 +63,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #include <unistd.h>
 
 #include "asterisk/logger.h"
+#include "asterisk/utils.h"
 #include "ael/ael.tab.h"
 #include "asterisk/ael_structs.h"
 
@@ -402,13 +401,10 @@ includes	{ STORE_POS; return KW_INCLUDES;}
 		if ( !error ) {	/* valid file name */
 			*p2 = 0;
 			/* relative vs. absolute */
-			if ( *(p1+1) != '/' ) {
-				/* XXX must check overflows */
-				strcpy(fnamebuf,ast_config_AST_CONFIG_DIR);
-				strcat(fnamebuf,"/");
-				strcat(fnamebuf,p1+1);
-			} else
-				strcpy(fnamebuf,p1+1);
+			if (*(p1+1) != '/')
+				snprintf(fnamebuf, sizeof(fnamebuf), "%s/%s", ast_config_AST_CONFIG_DIR, p1 + 1);
+			else
+				ast_copy_string(fnamebuf, p1 + 1, sizeof(fnamebuf));
 			in1 = fopen( fnamebuf, "r" );
 			if ( ! in1 ) {
 				ast_log(LOG_ERROR,"File=%s, line=%d, column=%d: Couldn't find the include file: %s; ignoring the Include directive!\n", my_file, my_lineno, my_col, fnamebuf);
diff --git a/pbx/ael/ael_lex.c b/pbx/ael/ael_lex.c
index 147f554b26d59bab23a9940f5aa89087dec730f3..616b675d5620ef3f826f75631ee7aed7d067031c 100644
--- a/pbx/ael/ael_lex.c
+++ b/pbx/ael/ael_lex.c
@@ -16,6 +16,7 @@
 
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
+#include "asterisk.h"
 /* begin standard C headers. */
 #include <stdio.h>
 #include <string.h>
@@ -672,8 +673,6 @@ static yyconst flex_int16_t yy_chk[553] =
  * bison-locations is probably not needed.
  */
 #line 59 "ael.flex"
-#include "asterisk.h"
-
 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 
 #include <sys/types.h>
@@ -681,6 +680,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #include <unistd.h>
 
 #include "asterisk/logger.h"
+#include "asterisk/utils.h"
 #include "ael/ael.tab.h"
 #include "asterisk/ael_structs.h"
 
@@ -778,7 +778,7 @@ static void pbcwhere(const char *text, int *line, int *col )
 #define	STORE_POS
 #define	STORE_LOC
 #endif
-#line 779 "ael_lex.c"
+#line 781 "ael_lex.c"
 
 #define INITIAL 0
 #define paren 1
@@ -1018,10 +1018,10 @@ YY_DECL
 	register int yy_act;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-#line 171 "ael.flex"
+#line 173 "ael.flex"
 
 
-#line 1022 "ael_lex.c"
+#line 1024 "ael_lex.c"
 
     yylval = yylval_param;
 
@@ -1112,218 +1112,218 @@ do_action:	/* This label is used only to access EOF actions. */
 
 case 1:
 YY_RULE_SETUP
-#line 173 "ael.flex"
+#line 175 "ael.flex"
 { STORE_POS; return LC;}
 	YY_BREAK
 case 2:
 YY_RULE_SETUP
-#line 174 "ael.flex"
+#line 176 "ael.flex"
 { STORE_POS; return RC;}
 	YY_BREAK
 case 3:
 YY_RULE_SETUP
-#line 175 "ael.flex"
+#line 177 "ael.flex"
 { STORE_POS; return LP;}
 	YY_BREAK
 case 4:
 YY_RULE_SETUP
-#line 176 "ael.flex"
+#line 178 "ael.flex"
 { STORE_POS; return RP;}
 	YY_BREAK
 case 5:
 YY_RULE_SETUP
-#line 177 "ael.flex"
+#line 179 "ael.flex"
 { STORE_POS; return SEMI;}
 	YY_BREAK
 case 6:
 YY_RULE_SETUP
-#line 178 "ael.flex"
+#line 180 "ael.flex"
 { STORE_POS; return EQ;}
 	YY_BREAK
 case 7:
 YY_RULE_SETUP
-#line 179 "ael.flex"
+#line 181 "ael.flex"
 { STORE_POS; return COMMA;}
 	YY_BREAK
 case 8:
 YY_RULE_SETUP
-#line 180 "ael.flex"
+#line 182 "ael.flex"
 { STORE_POS; return COLON;}
 	YY_BREAK
 case 9:
 YY_RULE_SETUP
-#line 181 "ael.flex"
+#line 183 "ael.flex"
 { STORE_POS; return AMPER;}
 	YY_BREAK
 case 10:
 YY_RULE_SETUP
-#line 182 "ael.flex"
+#line 184 "ael.flex"
 { STORE_POS; return BAR;}
 	YY_BREAK
 case 11:
 YY_RULE_SETUP
-#line 183 "ael.flex"
+#line 185 "ael.flex"
 { STORE_POS; return EXTENMARK;}
 	YY_BREAK
 case 12:
 YY_RULE_SETUP
-#line 184 "ael.flex"
+#line 186 "ael.flex"
 { STORE_POS; return AT;}
 	YY_BREAK
 case 13:
 YY_RULE_SETUP
-#line 185 "ael.flex"
+#line 187 "ael.flex"
 {/*comment*/}
 	YY_BREAK
 case 14:
 YY_RULE_SETUP
-#line 186 "ael.flex"
+#line 188 "ael.flex"
 { STORE_POS; return KW_CONTEXT;}
 	YY_BREAK
 case 15:
 YY_RULE_SETUP
-#line 187 "ael.flex"
+#line 189 "ael.flex"
 { STORE_POS; return KW_ABSTRACT;}
 	YY_BREAK
 case 16:
 YY_RULE_SETUP
-#line 188 "ael.flex"
+#line 190 "ael.flex"
 { STORE_POS; return KW_MACRO;};
 	YY_BREAK
 case 17:
 YY_RULE_SETUP
-#line 189 "ael.flex"
+#line 191 "ael.flex"
 { STORE_POS; return KW_GLOBALS;}
 	YY_BREAK
 case 18:
 YY_RULE_SETUP
-#line 190 "ael.flex"
+#line 192 "ael.flex"
 { STORE_POS; return KW_IGNOREPAT;}
 	YY_BREAK
 case 19:
 YY_RULE_SETUP
-#line 191 "ael.flex"
+#line 193 "ael.flex"
 { STORE_POS; return KW_SWITCH;}
 	YY_BREAK
 case 20:
 YY_RULE_SETUP
-#line 192 "ael.flex"
+#line 194 "ael.flex"
 { STORE_POS; return KW_IF;}
 	YY_BREAK
 case 21:
 YY_RULE_SETUP
-#line 193 "ael.flex"
+#line 195 "ael.flex"
 { STORE_POS; return KW_IFTIME;}
 	YY_BREAK
 case 22:
 YY_RULE_SETUP
-#line 194 "ael.flex"
+#line 196 "ael.flex"
 { STORE_POS; return KW_RANDOM;}
 	YY_BREAK
 case 23:
 YY_RULE_SETUP
-#line 195 "ael.flex"
+#line 197 "ael.flex"
 { STORE_POS; return KW_REGEXTEN;}
 	YY_BREAK
 case 24:
 YY_RULE_SETUP
-#line 196 "ael.flex"
+#line 198 "ael.flex"
 { STORE_POS; return KW_HINT;}
 	YY_BREAK
 case 25:
 YY_RULE_SETUP
-#line 197 "ael.flex"
+#line 199 "ael.flex"
 { STORE_POS; return KW_ELSE;}
 	YY_BREAK
 case 26:
 YY_RULE_SETUP
-#line 198 "ael.flex"
+#line 200 "ael.flex"
 { STORE_POS; return KW_GOTO;}
 	YY_BREAK
 case 27:
 YY_RULE_SETUP
-#line 199 "ael.flex"
+#line 201 "ael.flex"
 { STORE_POS; return KW_JUMP;}
 	YY_BREAK
 case 28:
 YY_RULE_SETUP
-#line 200 "ael.flex"
+#line 202 "ael.flex"
 { STORE_POS; return KW_RETURN;}
 	YY_BREAK
 case 29:
 YY_RULE_SETUP
-#line 201 "ael.flex"
+#line 203 "ael.flex"
 { STORE_POS; return KW_BREAK;}
 	YY_BREAK
 case 30:
 YY_RULE_SETUP
-#line 202 "ael.flex"
+#line 204 "ael.flex"
 { STORE_POS; return KW_CONTINUE;}
 	YY_BREAK
 case 31:
 YY_RULE_SETUP
-#line 203 "ael.flex"
+#line 205 "ael.flex"
 { STORE_POS; return KW_FOR;}
 	YY_BREAK
 case 32:
 YY_RULE_SETUP
-#line 204 "ael.flex"
+#line 206 "ael.flex"
 { STORE_POS; return KW_WHILE;}
 	YY_BREAK
 case 33:
 YY_RULE_SETUP
-#line 205 "ael.flex"
+#line 207 "ael.flex"
 { STORE_POS; return KW_CASE;}
 	YY_BREAK
 case 34:
 YY_RULE_SETUP
-#line 206 "ael.flex"
+#line 208 "ael.flex"
 { STORE_POS; return KW_DEFAULT;}
 	YY_BREAK
 case 35:
 YY_RULE_SETUP
-#line 207 "ael.flex"
+#line 209 "ael.flex"
 { STORE_POS; return KW_PATTERN;}
 	YY_BREAK
 case 36:
 YY_RULE_SETUP
-#line 208 "ael.flex"
+#line 210 "ael.flex"
 { STORE_POS; return KW_CATCH;}
 	YY_BREAK
 case 37:
 YY_RULE_SETUP
-#line 209 "ael.flex"
+#line 211 "ael.flex"
 { STORE_POS; return KW_SWITCHES;}
 	YY_BREAK
 case 38:
 YY_RULE_SETUP
-#line 210 "ael.flex"
+#line 212 "ael.flex"
 { STORE_POS; return KW_ESWITCHES;}
 	YY_BREAK
 case 39:
 YY_RULE_SETUP
-#line 211 "ael.flex"
+#line 213 "ael.flex"
 { STORE_POS; return KW_INCLUDES;}
 	YY_BREAK
 case 40:
 /* rule 40 can match eol */
 YY_RULE_SETUP
-#line 213 "ael.flex"
+#line 215 "ael.flex"
 { my_lineno++; my_col = 1; }
 	YY_BREAK
 case 41:
 YY_RULE_SETUP
-#line 214 "ael.flex"
+#line 216 "ael.flex"
 { my_col += yyleng; }
 	YY_BREAK
 case 42:
 YY_RULE_SETUP
-#line 215 "ael.flex"
+#line 217 "ael.flex"
 { my_col += (yyleng*8)-(my_col%8); }
 	YY_BREAK
 case 43:
 YY_RULE_SETUP
-#line 217 "ael.flex"
+#line 219 "ael.flex"
 {
 		STORE_POS;
 		yylval->str = strdup(yytext);
@@ -1341,7 +1341,7 @@ YY_RULE_SETUP
 case 44:
 /* rule 44 can match eol */
 YY_RULE_SETUP
-#line 233 "ael.flex"
+#line 235 "ael.flex"
 {
 		if ( pbcpop(')') ) {	/* error */
 			STORE_LOC;
@@ -1367,7 +1367,7 @@ YY_RULE_SETUP
 case 45:
 /* rule 45 can match eol */
 YY_RULE_SETUP
-#line 255 "ael.flex"
+#line 257 "ael.flex"
 {
 		char c = yytext[yyleng-1];
 		if (c == '(')
@@ -1379,7 +1379,7 @@ YY_RULE_SETUP
 case 46:
 /* rule 46 can match eol */
 YY_RULE_SETUP
-#line 263 "ael.flex"
+#line 265 "ael.flex"
 {
 		char c = yytext[yyleng-1];
 		if ( pbcpop(c))  { /* error */
@@ -1404,7 +1404,7 @@ YY_RULE_SETUP
 case 47:
 /* rule 47 can match eol */
 YY_RULE_SETUP
-#line 285 "ael.flex"
+#line 287 "ael.flex"
 {
 		char c = yytext[yyleng-1];
 		if (c == '(')
@@ -1416,7 +1416,7 @@ YY_RULE_SETUP
 case 48:
 /* rule 48 can match eol */
 YY_RULE_SETUP
-#line 293 "ael.flex"
+#line 295 "ael.flex"
 {
 		if ( pbcpop(')') ) { /* error */
 			STORE_LOC;
@@ -1444,7 +1444,7 @@ YY_RULE_SETUP
 case 49:
 /* rule 49 can match eol */
 YY_RULE_SETUP
-#line 317 "ael.flex"
+#line 319 "ael.flex"
 {
 		if( parencount != 0) { /* printf("Folding in a comma!\n"); */
 			yymore();
@@ -1462,7 +1462,7 @@ YY_RULE_SETUP
 case 50:
 /* rule 50 can match eol */
 YY_RULE_SETUP
-#line 331 "ael.flex"
+#line 333 "ael.flex"
 {
 		char c = yytext[yyleng-1];
 		if ( pbcpop(c) ) { /* error */
@@ -1483,7 +1483,7 @@ YY_RULE_SETUP
 case 51:
 /* rule 51 can match eol */
 YY_RULE_SETUP
-#line 348 "ael.flex"
+#line 350 "ael.flex"
 {
 		char c = yytext[yyleng-1];
 		yymore();
@@ -1493,7 +1493,7 @@ YY_RULE_SETUP
 case 52:
 /* rule 52 can match eol */
 YY_RULE_SETUP
-#line 354 "ael.flex"
+#line 356 "ael.flex"
 {
 		char c = yytext[yyleng-1];
 		if ( pbcpop(c) ) { /* error */
@@ -1509,7 +1509,7 @@ YY_RULE_SETUP
 case 53:
 /* rule 53 can match eol */
 YY_RULE_SETUP
-#line 366 "ael.flex"
+#line 368 "ael.flex"
 {
 		STORE_LOC;
 		yylval->str = strdup(yytext);
@@ -1522,7 +1522,7 @@ YY_RULE_SETUP
 case 54:
 /* rule 54 can match eol */
 YY_RULE_SETUP
-#line 375 "ael.flex"
+#line 377 "ael.flex"
 {
 		FILE *in1;
 		char fnamebuf[1024],*p1,*p2;
@@ -1550,13 +1550,10 @@ YY_RULE_SETUP
 		if ( !error ) {	/* valid file name */
 			*p2 = 0;
 			/* relative vs. absolute */
-			if ( *(p1+1) != '/' ) {
-				/* XXX must check overflows */
-				strcpy(fnamebuf,ast_config_AST_CONFIG_DIR);
-				strcat(fnamebuf,"/");
-				strcat(fnamebuf,p1+1);
-			} else
-				strcpy(fnamebuf,p1+1);
+			if (*(p1+1) != '/')
+				snprintf(fnamebuf, sizeof(fnamebuf), "%s/%s", ast_config_AST_CONFIG_DIR, p1 + 1);
+			else
+				ast_copy_string(fnamebuf, p1 + 1, sizeof(fnamebuf));
 			in1 = fopen( fnamebuf, "r" );
 			if ( ! in1 ) {
 				ast_log(LOG_ERROR,"File=%s, line=%d, column=%d: Couldn't find the include file: %s; ignoring the Include directive!\n", my_file, my_lineno, my_col, fnamebuf);
@@ -1589,7 +1586,7 @@ case YY_STATE_EOF(INITIAL):
 case YY_STATE_EOF(paren):
 case YY_STATE_EOF(semic):
 case YY_STATE_EOF(argg):
-#line 437 "ael.flex"
+#line 436 "ael.flex"
 {
 		if ( --include_stack_index < 0 ) {
 			yyterminate();
@@ -1605,10 +1602,10 @@ case YY_STATE_EOF(argg):
 	YY_BREAK
 case 55:
 YY_RULE_SETUP
-#line 450 "ael.flex"
+#line 449 "ael.flex"
 ECHO;
 	YY_BREAK
-#line 1609 "ael_lex.c"
+#line 1608 "ael_lex.c"
 
 	case YY_END_OF_BUFFER:
 		{
@@ -2738,7 +2735,7 @@ void ael_yyfree (void * ptr , yyscan_t yyscanner)
 
 #define YYTABLES_NAME "yytables"
 
-#line 450 "ael.flex"
+#line 449 "ael.flex"
 
 
 
diff --git a/res/res_musiconhold.c b/res/res_musiconhold.c
index 46796bfe80b03fa2bbc24e140a48662338ab2b2e..b19fb69fce4062b6e50b029618d2114affe45c6e 100644
--- a/res/res_musiconhold.c
+++ b/res/res_musiconhold.c
@@ -752,7 +752,7 @@ static int moh_scan_files(struct mohclass *class) {
 
 	DIR *files_DIR;
 	struct dirent *files_dirent;
-	char path[512];
+	char path[PATH_MAX];
 	char filepath[PATH_MAX];
 	char *ext;
 	struct stat statbuf;
@@ -770,7 +770,7 @@ static int moh_scan_files(struct mohclass *class) {
 
 	class->total_files = 0;
 	dirnamelen = strlen(class->dir) + 2;
-	getcwd(path, 512);
+	getcwd(path, sizeof(path));
 	chdir(class->dir);
 	while ((files_dirent = readdir(files_DIR))) {
 		/* The file name must be at least long enough to have the file type extension */