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-rw-r--r--security/nss/cmd/modutil/installparse.l137
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diff --git a/security/nss/cmd/modutil/installparse.l b/security/nss/cmd/modutil/installparse.l
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+/* 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;
+}