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comparison: security/nss/cmd/modutil/installparse.l
security/nss/cmd/modutil/installparse.l
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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deleted
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| -1:000000000000 | 0:e32bf0f5b6b7 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 | |
| 6 /* lex file for analyzing PKCS #11 Module installation instructions */ | |
| 7 | |
| 8 /*----------------------------- Definitions ---------------------------*/ | |
| 9 %{ | |
| 10 #include <string.h> | |
| 11 | |
| 12 #include "install-ds.h" /* defines tokens and data structures */ | |
| 13 #include "installparse.h" /* produced by yacc -d */ | |
| 14 #include <prprf.h> | |
| 15 static char *putSimpleString(char*); /* return copy of string */ | |
| 16 static char *putComplexString(char*); /* strip out quotes, deal with */ | |
| 17 /* escaped characters */ | |
| 18 | |
| 19 void Pk11Install_yyerror(char *); | |
| 20 | |
| 21 /* Overrides to use NSPR */ | |
| 22 #define malloc PR_Malloc | |
| 23 #define realloc PR_Realloc | |
| 24 #define free PR_Free | |
| 25 | |
| 26 int Pk11Install_yylinenum=1; | |
| 27 static char *err; | |
| 28 | |
| 29 #define YY_NEVER_INTERACTIVE 1 | |
| 30 #define yyunput Pkcs11Install_yyunput | |
| 31 | |
| 32 /* This is the default YY_INPUT modified for NSPR */ | |
| 33 #define YY_INPUT(buf,result,max_size) \ | |
| 34 if ( yy_current_buffer->yy_is_interactive ) { \ | |
| 35 char c; \ | |
| 36 int n; \ | |
| 37 for ( n = 0; n < max_size && \ | |
| 38 PR_Read(Pk11Install_FD, &c, 1)==1 && c != '\n'; ++n ) { \ | |
| 39 buf[n] = c; \ | |
| 40 } \ | |
| 41 if ( c == '\n' ) { \ | |
| 42 buf[n++] = c; \ | |
| 43 } \ | |
| 44 result = n; \ | |
| 45 } else { \ | |
| 46 result = PR_Read(Pk11Install_FD, buf, max_size); \ | |
| 47 } | |
| 48 | |
| 49 %} | |
| 50 | |
| 51 /*** Regular expression definitions ***/ | |
| 52 /* simple_string has no whitespace, quotes, or braces */ | |
| 53 simple_string [^ \t\r\n\""{""}"]+ | |
| 54 | |
| 55 /* complex_string is enclosed in quotes. Inside the quotes, quotes and | |
| 56 backslashes must be backslash-escaped. No newlines or carriage returns | |
| 57 are allowed inside the quotes. Otherwise, anything goes. */ | |
| 58 complex_string \"([^\"\\\r\n]|(\\\")|(\\\\))+\" | |
| 59 | |
| 60 /* Standard whitespace */ | |
| 61 whitespace [ \t\r]+ | |
| 62 | |
| 63 other . | |
| 64 | |
| 65 /*---------------------------- Actions --------------------------------*/ | |
| 66 %% | |
| 67 | |
| 68 "{" return OPENBRACE; | |
| 69 "}" return CLOSEBRACE; | |
| 70 {simple_string} {Pk11Install_yylval.string = | |
| 71 putSimpleString(Pk11Install_yytext); | |
| 72 return STRING;} | |
| 73 {complex_string} {Pk11Install_yylval.string = | |
| 74 putComplexString(Pk11Install_yytext); | |
| 75 return STRING;} | |
| 76 | |
| 77 "\n" Pk11Install_yylinenum++; | |
| 78 | |
| 79 {whitespace} ; | |
| 80 | |
| 81 {other} {err = PR_smprintf("Invalid lexeme: %s",Pk11Install_yytext); | |
| 82 Pk11Install_yyerror(err); | |
| 83 PR_smprintf_free(err); | |
| 84 return 1; | |
| 85 } | |
| 86 | |
| 87 %% | |
| 88 /*------------------------ Program Section ----------------------------*/ | |
| 89 | |
| 90 PRFileDesc *Pk11Install_FD=NULL; | |
| 91 | |
| 92 /*************************************************************************/ | |
| 93 /* dummy function required by lex */ | |
| 94 int Pk11Install_yywrap(void) { return 1;} | |
| 95 | |
| 96 /*************************************************************************/ | |
| 97 /* Return a copy of the given string */ | |
| 98 static char* | |
| 99 putSimpleString(char *str) | |
| 100 { | |
| 101 char *tmp = (char*) PR_Malloc(strlen(str)+1); | |
| 102 strcpy(tmp, str); | |
| 103 return tmp; | |
| 104 } | |
| 105 | |
| 106 /*************************************************************************/ | |
| 107 /* Strip out quotes, replace escaped characters with what they stand for. | |
| 108 This function assumes that what is passed in is actually a complex | |
| 109 string, so error checking is lax. */ | |
| 110 static char* | |
| 111 putComplexString(char *str) | |
| 112 { | |
| 113 int size, i,j; | |
| 114 char *tmp; | |
| 115 | |
| 116 if(!str) { | |
| 117 return NULL; | |
| 118 } | |
| 119 size = strlen(str); | |
| 120 | |
| 121 /* Allocate the new space. This string will actually be too big, | |
| 122 since quotes and backslashes will be stripped out. But that's ok. */ | |
| 123 tmp = (char*) PR_Malloc(size+1); | |
| 124 | |
| 125 /* Copy it over */ | |
| 126 for(i=0, j=0; i < size; i++) { | |
| 127 if(str[i]=='\"') { | |
| 128 continue; /* skip un-escaped quotes */ | |
| 129 } else if(str[i]=='\\') { | |
| 130 ++i; /* escaped character. skip the backslash */ | |
| 131 } | |
| 132 tmp[j++] = str[i]; | |
| 133 } | |
| 134 tmp[j] = '\0'; | |
| 135 | |
| 136 return tmp; | |
| 137 } |
