1 files changed, 137 insertions, 0 deletions
diff --git a/security/nss/cmd/modutil/installparse.l b/security/nss/cmd/modutil/installparse.l
new file mode 100644
index 0000000000..71fb56101d
--- /dev/null
+++ b/security/nss/cmd/modutil/installparse.l
@@ -0,0 +1,137 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+/* lex file for analyzing PKCS #11 Module installation instructions */
+
+/*----------------------------- Definitions ---------------------------*/
+%{
+#include <string.h>
+
+#include "install-ds.h"		/* defines tokens and data structures */
+#include "installparse.h"	/* produced by yacc -d */
+#include <prprf.h>
+static char *putSimpleString(char*);	/* return copy of string */
+static char *putComplexString(char*);	/* strip out quotes, deal with */
+											/* escaped characters */
+
+void Pk11Install_yyerror(char *);
+
+/* Overrides to use NSPR */
+#define malloc PR_Malloc
+#define realloc PR_Realloc
+#define free PR_Free
+
+int Pk11Install_yylinenum=1;
+static char *err;
+
+#define YY_NEVER_INTERACTIVE 1
+#define yyunput Pkcs11Install_yyunput
+
+/* This is the default YY_INPUT modified for NSPR */
+#define YY_INPUT(buf,result,max_size) \
+	if ( yy_current_buffer->yy_is_interactive ) { \
+		char c; \
+		int n; \
+		for ( n = 0; n < max_size && \
+		  PR_Read(Pk11Install_FD, &c, 1)==1 && c != '\n'; ++n ) { \
+			buf[n] = c; \
+		} \
+        if ( c == '\n' ) { \
+            buf[n++] = c; \
+		} \
+        result = n; \
+	} else { \
+		result = PR_Read(Pk11Install_FD, buf, max_size); \
+	}
+
+%}
+
+/*** Regular expression definitions ***/
+/* simple_string has no whitespace, quotes, or braces */
+simple_string		[^ \t\r\n\""{""}"]+
+
+/* complex_string is enclosed in quotes. Inside the quotes, quotes and
+   backslashes must be backslash-escaped. No newlines or carriage returns
+   are allowed inside the quotes. Otherwise, anything goes. */
+complex_string		\"([^\"\\\r\n]|(\\\")|(\\\\))+\"
+
+/* Standard whitespace */
+whitespace			[ \t\r]+
+
+other				.
+
+/*---------------------------- Actions --------------------------------*/
+%%
+
+"{"					return OPENBRACE;
+"}"					return CLOSEBRACE;
+{simple_string}		{Pk11Install_yylval.string =
+						putSimpleString(Pk11Install_yytext);
+						return STRING;}
+{complex_string}	{Pk11Install_yylval.string =
+						putComplexString(Pk11Install_yytext);
+						return STRING;}
+
+"\n"				Pk11Install_yylinenum++;
+
+{whitespace}		;
+
+{other}				{err = PR_smprintf("Invalid lexeme: %s",Pk11Install_yytext);
+						Pk11Install_yyerror(err);
+						PR_smprintf_free(err);
+						return 1;
+					}
+
+%%
+/*------------------------ Program Section ----------------------------*/
+
+PRFileDesc *Pk11Install_FD=NULL;
+
+/*************************************************************************/
+/* dummy function required by lex */
+int Pk11Install_yywrap(void) { return 1;}
+
+/*************************************************************************/
+/* Return a copy of the given string */
+static char*
+putSimpleString(char *str)
+{
+	char *tmp = (char*) PR_Malloc(strlen(str)+1);
+	strcpy(tmp, str);
+	return tmp;
+}
+
+/*************************************************************************/
+/* Strip out quotes, replace escaped characters with what they stand for.
+   This function assumes that what is passed in is actually a complex
+   string, so error checking is lax. */
+static char*
+putComplexString(char *str)
+{
+	int size, i,j;
+	char *tmp;
+
+	if(!str) {
+		return NULL;
+	}
+	size = strlen(str);
+
+	/* Allocate the new space.  This string will actually be too big, 
+		since quotes and backslashes will be stripped out.  But that's ok. */
+	tmp = (char*) PR_Malloc(size+1);
+
+	/* Copy it over */
+	for(i=0, j=0; i < size; i++) {
+		if(str[i]=='\"') {
+			continue;  /* skip un-escaped quotes */
+		} else if(str[i]=='\\') {
+			++i;       /* escaped character. skip the backslash */
+		}
+		tmp[j++] = str[i];
+	}
+	tmp[j] = '\0';
+
+	return tmp;
+}