Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Net / System / Net / Mail / MailBnfHelper.cs / 1 / MailBnfHelper.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Net.Mime
{
using System;
using System.Text;
using System.Net.Mail;
using System.Globalization;
internal static class MailBnfHelper
{
static bool[] s_atext = new bool[128];
static bool[] s_qtext = new bool[128];
static bool[] s_fqtext = new bool[128];
static bool[] s_dtext = new bool[128];
static bool[] s_fdtext = new bool[128];
static bool[] s_ftext = new bool[128];
static bool[] s_ttext = new bool[128];
static bool[] s_digits = new bool[128];
static MailBnfHelper()
{
// atext = ALPHA / DIGIT / "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "/" / "=" / "?" / "^" / "_" / "`" / "{" / "|" / "}" / "~"
for (int i = '0'; i <= '9'; i++) { s_atext[i] = true; }
for (int i = 'A'; i <= 'Z'; i++) { s_atext[i] = true; }
for (int i = 'a'; i <= 'z'; i++) { s_atext[i] = true; }
s_atext['!'] = true;
s_atext['#'] = true;
s_atext['$'] = true;
s_atext['%'] = true;
s_atext['&'] = true;
s_atext['\''] = true;
s_atext['*'] = true;
s_atext['+'] = true;
s_atext['-'] = true;
s_atext['/'] = true;
s_atext['='] = true;
s_atext['?'] = true;
s_atext['^'] = true;
s_atext['_'] = true;
s_atext['`'] = true;
s_atext['{'] = true;
s_atext['|'] = true;
s_atext['}'] = true;
s_atext['~'] = true;
// qtext = %d1-8 / %d11 / %d12 / %d14-31 / %d33 / %d35-91 / %d93-127
for (int i = 1; i <= 8; i++) { s_qtext[i] = true; }
s_qtext[11] = true;
s_qtext[12] = true;
for (int i = 14; i <= 31; i++) { s_qtext[i] = true; }
s_qtext[33] = true;
for (int i = 35; i <= 91; i++) { s_qtext[i] = true; }
for (int i = 93; i <= 127; i++) { s_qtext[i] = true; }
// fqtext = %d1-9 / %d11 / %d12 / %d14-33 / %d35-91 / %d93-127
for (int i = 1; i <= 9; i++) { s_fqtext[i] = true; }
s_fqtext[11] = true;
s_fqtext[12] = true;
for (int i = 14; i <= 33; i++) { s_fqtext[i] = true; }
for (int i = 35; i <= 91; i++) { s_fqtext[i] = true; }
for (int i = 93; i <= 127; i++) { s_fqtext[i] = true; }
// dtext = %d1-8 / %d11 / %d12 / %d14-31 / %d33-90 / %d94-127
for (int i = 1; i <= 8; i++) { s_dtext[i] = true; }
s_dtext[11] = true;
s_dtext[12] = true;
for (int i = 14; i <= 31; i++) { s_dtext[i] = true; }
for (int i = 33; i <= 90; i++) { s_dtext[i] = true; }
for (int i = 94; i <= 127; i++) { s_dtext[i] = true; }
// fdtext = %d1-9 / %d11 / %d12 / %d14-90 / %d94-127
for (int i = 1; i <= 9; i++) { s_fdtext[i] = true; }
s_fdtext[11] = true;
s_fdtext[12] = true;
for (int i = 14; i <= 90; i++) { s_fdtext[i] = true; }
for (int i = 94; i <= 127; i++) { s_fdtext[i] = true; }
// ftext = %d33-57 / %d59-126
for (int i = 33; i <= 57; i++) { s_ftext[i] = true; }
for (int i = 59; i <= 126; i++) { s_ftext[i] = true; }
// ttext = %d33-126 except '()<>@,;:\"/[]?='
for (int i = 33; i <= 126; i++) { s_ttext[i] = true; }
s_ttext['('] = false;
s_ttext[')'] = false;
s_ttext['<'] = false;
s_ttext['>'] = false;
s_ttext['@'] = false;
s_ttext[','] = false;
s_ttext[';'] = false;
s_ttext[':'] = false;
s_ttext['\\'] = false;
s_ttext['"'] = false;
s_ttext['/'] = false;
s_ttext['['] = false;
s_ttext[']'] = false;
s_ttext['?'] = false;
s_ttext['='] = false;
// digits = %d48-57
for (int i = 48; i <= 57; i++)
s_digits[i] = true;
}
internal static bool SkipCFWS(string data, ref int offset)
{
int comments = 0;
for (;offset < data.Length ;offset++)
{
if (data[offset] > 127)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
else if (data[offset] == '\\' && comments > 0)
offset += 2;
else if (data[offset] == '(')
comments++;
else if (data[offset] == ')')
comments--;
else if (data[offset] != ' ' && data[offset] != '\t' && comments == 0)
return true;
if (comments < 0) {
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
//returns false if end of string
return false;
}
internal static bool SkipFWS(string data, ref int offset)
{
for (;offset < data.Length ;offset++)
{
if (data[offset] != ' ' && data[offset] != '\t')
return true;
}
//returns false if end of string
return false;
}
internal static void ValidateHeaderName(string data){
int offset = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_ftext.Length || !s_ftext[data[offset]])
throw new FormatException(SR.GetString(SR.InvalidHeaderName));
}
if (offset == 0)
throw new FormatException(SR.GetString(SR.InvalidHeaderName));
}
/*
// Consider removing.
internal static string ReadFieldName(string data, ref int offset, StringBuilder builder)
{
int start = offset;
for (; offset < data.Length; offset++)
{
if (data[offset] == ':')
break;
if (data[offset] > s_ftext.Length || !s_ftext[data[offset]])
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
if (start == 0 && offset == data.Length)
return data;
else
return data.Substring(start, offset - start);
}
*/
internal static string ReadQuotedString(string data, ref int offset, StringBuilder builder){
return ReadQuotedString(data, ref offset, builder,false);
}
internal static string ReadQuotedString(string data, ref int offset, StringBuilder builder,bool doesntRequireQuotes)
{
// assume first char is the opening quote
if(!doesntRequireQuotes){
++offset;
}
int start = offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length; offset++)
{
if (data[offset] == '\\')
{
localBuilder.Append(data, start, offset - start);
start = ++offset;
continue;
}
else if (data[offset] == '"')
{
localBuilder.Append(data, start, offset - start);
offset++;
return (builder != null ? null : localBuilder.ToString());
}
else if (!s_fqtext[data[offset]])
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
if(doesntRequireQuotes){
localBuilder.Append(data, start, offset - start);
return (builder != null ? null : localBuilder.ToString());
}
throw new FormatException(SR.GetString(SR.MailHeaderFieldMalformedHeader));
}
internal static string ReadPhrase(string data, ref int offset, StringBuilder builder)
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
bool addSP = false;
SkipCFWS(data, ref offset);
int start = offset;
while (SkipCFWS(data, ref offset))
{
if (data[offset] == '"')
{
if (addSP)
localBuilder.Append(' ');
ReadQuotedString(data, ref offset, localBuilder);
addSP = true;
}
else if (s_atext[data[offset]])
{
if (addSP)
localBuilder.Append(' ');
ReadAtom(data, ref offset, localBuilder);
addSP = true;
}
else
{
break;
}
}
if (start == offset) {
//we didn't get any text, which is a violation
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
return (builder != null ? null : localBuilder.ToString());
}
internal static string ReadAtom(string data, ref int offset, StringBuilder builder)
{
int start = offset;
string ret;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_atext[data[offset]])
{
//if we didn't find any data, then there was an error.
if(offset == start){
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
ret = data.Substring(start, offset - start);
if (builder != null)
{
builder.Append(ret);
return null;
}
else
{
return ret;
}
}
}
//if we didn't find any data, then there was an error.
if(offset == start){
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
ret = (start == 0 ? data : data.Substring(start));
if (builder != null)
{
builder.Append(ret);
return null;
}
else
{
return ret;
}
}
internal static string ReadDotAtom(string data, ref int offset, StringBuilder builder)
{
int start = offset;
bool validBuilder = true;
if (builder == null){
validBuilder = false;
builder = new StringBuilder();
}
if(data[offset]!='.'){
ReadAtom(data,ref offset, builder);
}
while(offset < data.Length && data[offset]=='.') {
builder.Append(data[offset++]);
ReadAtom(data,ref offset, builder);
}
if(validBuilder){
return null;
}
else{
return builder.ToString();
}
}
/*
// Consider removing.
internal static string ReadAddress(string data, ref int offset, StringBuilder builder)
{
int start = offset;
if (!SkipCFWS(data, ref offset))
return null;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
if (data[offset] == '"')
ReadQuotedString(data, ref offset, localBuilder);
else
ReadDotAtom(data, ref offset, localBuilder);
if (!SkipCFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
if (data[offset++] != '@')
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
if (!SkipCFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
localBuilder.Append('@');
if (data[offset] == '[')
ReadDomainLiteral(data, ref offset, localBuilder);
else
ReadDotAtom(data, ref offset, localBuilder);
return (builder != null ? null : localBuilder.ToString());
}
*/
internal static string ReadDomainLiteral(string data, ref int offset, StringBuilder builder)
{
// assume first char is the opening bracket
int start = ++offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length; offset++)
{
if (data[offset] == '\\')
{
localBuilder.Append(data, start, offset - start);
start = ++offset;
continue;
}
else if (data[offset] == ']')
{
localBuilder.Append(data, start, offset - start);
offset++;
return (builder != null ? null : localBuilder.ToString());
}
else if (data[offset] > s_fdtext.Length || !s_fdtext[data[offset]])
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
throw new FormatException(SR.GetString(SR.MailHeaderFieldMalformedHeader));
}
internal static string ReadParameterAttribute(string data, ref int offset, StringBuilder builder)
{
if (!SkipCFWS(data, ref offset))
return null; //
return ReadToken(data, ref offset, null);
}
/*
// Consider removing.
internal static string ReadParameterValue(string data, ref int offset, StringBuilder builder)
{
if (!SkipCFWS(data, ref offset))
return string.Empty;
if (data[offset] == '"')
return ReadQuotedString(data, ref offset, builder);
else
return ReadToken(data, ref offset, builder);
}
*/
internal static string ReadToken(string data, ref int offset, StringBuilder builder)
{
int start = offset;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_ttext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_ttext[data[offset]])
{
break;
}
}
if (start == offset) {
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
return data.Substring(start, offset - start);
}
/*
// Consider removing.
internal static string ReadNoFoldQuotedString(string data, ref int offset, StringBuilder builder)
{
// assume first char is the opening quote
int start = ++offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length; offset++)
{
if (data[offset] == '\\')
{
localBuilder.Append(data, start, offset - start);
start = ++offset;
continue;
}
else if (data[offset] == '"')
{
localBuilder.Append(data, start, offset - start);
offset++;
return (builder != null ? null : localBuilder.ToString());
}
else if (data[offset] > s_qtext.Length || !s_qtext[data[offset]])
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
throw new FormatException(SR.GetString(SR.MailHeaderFieldMalformedHeader));
}
/*
// Consider removing.
internal static string ReadNoFoldLiteral(string data, ref int offset, StringBuilder builder)
{
// assume first char is the opening bracket
int start = ++offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length; offset++)
{
if (data[offset] == '\\')
{
localBuilder.Append(data, start, offset - start);
start = ++offset;
continue;
}
else if (data[offset] == ']')
{
localBuilder.Append(data, start, offset - start);
offset++;
return (builder != null ? null : localBuilder.ToString());
}
else if (data[offset] > s_dtext.Length || !s_dtext[data[offset]])
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
throw new FormatException(SR.GetString(SR.MailHeaderFieldMalformedHeader));
}
*/
internal static string ReadAngleAddress(string data, ref int offset, StringBuilder builder)
{
if (offset >= data.Length) {
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
}
//first, need to get local part
SkipCFWS(data, ref offset);
if (data[offset] == '\"') {
ReadQuotedString(data,ref offset,builder);
}
else{
ReadDotAtom(data, ref offset, builder);
}
SkipCFWS(data,ref offset);
if (offset >= data.Length || data[offset] != '@') {
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
}
offset++;
SkipCFWS(data,ref offset);
string address = ReadAddressSpecDomain(data, ref offset, builder);
if (!SkipCFWS(data, ref offset) || data[offset++] != '>')
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
return address;
}
internal static string ReadAddressSpecDomain(string data,ref int offset, StringBuilder builder){
if (offset >= data.Length) {
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
}
builder.Append('@');
SkipCFWS(data, ref offset);
if (data[offset] == '['){
ReadDomainLiteral(data, ref offset, builder);
}
else{
ReadDotAtom(data, ref offset, builder);
}
SkipCFWS(data, ref offset);
return builder.ToString();
}
internal static string ReadMailAddress(string data, ref int offset, out string displayName){
string address = null;
Exception exception = null;
displayName = String.Empty;
StringBuilder builder = new StringBuilder();
try{
SkipCFWS(data, ref offset);
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
//angle address
if (data[offset] == '<')
{
offset++;
address = ReadAngleAddress(data, ref offset, builder);
return address;
}
//otherwise, its a group, mailbox-name-addr or mailbox-addr-spec
//get the first part
//this should skip CFWS internally before and after the phrase
ReadPhrase(data, ref offset, builder);
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
// ReadOneOrMoreQuotedStrings() and ReadOneOrMoreDotAtoms() both
// call SkipCFWS() before they return so the next character should
// not be a whitespace character.
switch (data[offset])
{
case '@':{
//the phrase was the local part
offset++;
address = ReadAddressSpecDomain(data,ref offset, builder);
break;
}
case '.': {
// the phrase was a dotatom, therefore this must be
// the localpart of a mail address or the display name.
ReadDotAtom(data, ref offset, builder);
SkipCFWS(data, ref offset);
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
if (data[offset] == '@') {
offset++;
address = ReadAddressSpecDomain(data,ref offset,builder);
}
else if (data[offset] == '<') {
displayName = builder.ToString();
builder = new StringBuilder();
offset++;
address = ReadAngleAddress(data, ref offset, builder);
}
else{
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
break;
}
case '\"':{
// the phrase was a quoted string, therefore this must be
// the localpart of a mail address, or the display name.
//skip whitespace and look at next character
offset++;
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
SkipCFWS(data, ref offset);
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
//it was the display
if (data[offset] == '<') {
offset++;
address = ReadAngleAddress(data, ref offset, builder);
}
else{
//otherwise, it was the local part
address = ReadAddressSpecDomain(data,ref offset,builder);
}
break;
}
case '<':{
//the phrase was a display name
displayName = builder.ToString();
builder = new StringBuilder();
offset++;
address = ReadAngleAddress(data, ref offset, builder);
break;
}
case ':':{
exception = new FormatException(SR.GetString(SR.MailAddressUnsupportedFormat));
goto done;
}
default:
{
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
}
//next character better be whitespace, end of the data, or a comma. Otherwise, there was an error
if(offset < data.Length){
SkipCFWS(data, ref offset);
if(offset < data.Length && data[offset]!=','){
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
}
}
catch(FormatException){
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
}
done:
if(exception != null){
throw exception;
}
return address;
}
internal static MailAddress ReadMailAddress(string data, ref int offset)
{
string displayName = null;
string address = ReadMailAddress(data, ref offset,out displayName);
return new MailAddress(address,displayName,0);
}
/*
// Consider removing.
// DATE
internal static string ReadDigits(string data, ref int offset, StringBuilder builder)
{
int start = offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length && s_digits[data[offset]]; offset++);
localBuilder.Append(data, start, offset - start);
return (builder != null ? null : localBuilder.ToString());
}
*/
internal static DateTime ReadDateTime(string data, ref int offset)
{
if (!SkipCFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
//day of week is optional
if (IsValidDOW(data, ref offset)){
if(offset >= data.Length || data[offset] != ',')
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
offset++;
}
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
int day = ReadDateNumber(data, ref offset, 2);
if (offset >= data.Length || (data[offset] != ' ' && data[offset] != '\t'))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
int month = ReadMonth(data, ref offset);
if (offset >= data.Length || (data[offset] != ' ' && data[offset] != '\t'))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
int year = ReadDateNumber(data, ref offset, 4);
if (offset >= data.Length || (data[offset] != ' ' && data[offset] != '\t'))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
int hour = ReadDateNumber(data, ref offset,2);
if (offset >= data.Length || data[offset] != ':')
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
offset++;
int minute = ReadDateNumber(data, ref offset,2);
int second = 0;
if (offset < data.Length && data[offset] == ':')
{
offset++;
second = ReadDateNumber(data, ref offset,2);
}
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
if (offset >= data.Length || (data[offset] != '-' && data[offset] != '+'))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
offset++;
int zone = ReadDateNumber(data, ref offset,4);
//
return new DateTime(year, month, day, hour, minute, second);
}
// date-time = [ day-of-week "," ] date FWS time [CFWS]
// day-of-week = ([FWS] day-name) / obs-day-of-week
// day-name = "Mon" / "Tue" / "Wed" / "Thu" / "Fri" / "Sat" / "Sun"
// date = day month year
// year = 4*DIGIT / obs-year
// month = (FWS month-name FWS) / obs-month
// month-name = "Jan" / "Feb" / "Mar" / "Apr" / "May" / "Jun" / "Jul" / "Aug" / "Sep" / "Oct" / "Nov" / "Dec"
// day = ([FWS] 1*2DIGIT) / obs-day
// time = time-of-day FWS zone
// time-of-day = hour ":" minute [ ":" second ]
// hour = 2DIGIT / obs-hour
// minute = 2DIGIT / obs-minute
// second = 2DIGIT / obs-second
// zone = (( "+" / "-" ) 4DIGIT) / obs-zone
static string[] s_months = new string[] { null, "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
static string[] s_days = new string[] {"Mon","Tue","Wed","Thu","Fri","Sat","Sun"};
static bool IsValidDOW(string data, ref int offset)
{
if(offset + 3 >= data.Length){
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
}
for(int i = 0; i= data.Length)
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
for (; offset < data.Length && offset < maxLength; offset++)
{
if (data[offset] < '0' || data[offset] > '9')
break;
res = (res * 10) + (data[offset] - '0');
}
if(res == 0)
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
return res;
}
static int ReadMonth(string data, ref int offset)
{
if (offset >= data.Length - 3)
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
switch (data[offset++])
{
case 'J': case 'j': // jan / jun / jul
switch (data[offset++])
{
case 'A': case 'a':
switch (data[offset++])
{
case 'N': case 'n': return 1;
}
break;
case 'U': case 'u':
switch (data[offset++])
{
case 'N': case 'n': return 6;
case 'L': case 'l': return 7;
}
break;
}
goto default;
case 'F': case 'f': // feb
switch (data[offset++])
{
case 'E': case 'e':
switch (data[offset++])
{
case 'B': case 'b': return 2;
}
break;
}
goto default;
case 'M': case 'm': // mar / may
switch (data[offset++])
{
case 'A': case 'a':
switch (data[offset++])
{
case 'Y': case 'y': return 5;
case 'R': case 'r': return 3;
}
break;
}
goto default;
case 'A': case 'a': // apr / aug
switch (data[offset++])
{
case 'P': case 'p':
switch (data[offset++])
{
case 'R': case 'r': return 4;
}
break;
case 'U': case 'u':
switch (data[offset++])
{
case 'G': case 'g': return 8;
}
break;
}
goto default;
case 'S': case 's': // sep
switch (data[offset++])
{
case 'E': case 'e':
switch (data[offset++])
{
case 'P': case 'p': return 9;
}
break;
}
goto default;
case 'O': case 'o': // Oct
switch (data[offset++])
{
case 'C': case 'c':
switch (data[offset++])
{
case 'T': case 't': return 10;
}
break;
}
goto default;
case 'N': case 'n': // Nov
switch (data[offset++])
{
case 'O': case 'o':
switch (data[offset++])
{
case 'V': case 'v': return 11;
}
break;
}
goto default;
case 'D': case 'd': // dec
switch (data[offset++])
{
case 'E':
case 'e':
switch (data[offset++])
{
case 'C': case 'c': return 12;
}
break;
}
goto default;
default:
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
}
}
internal static string GetDateTimeString(DateTime value, StringBuilder builder)
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
localBuilder.Append(value.Day);
localBuilder.Append(' ');
localBuilder.Append(s_months[value.Month]);
localBuilder.Append(' ');
localBuilder.Append(value.Year);
localBuilder.Append(' ');
if(value.Hour <= 9){
localBuilder.Append('0');
}
localBuilder.Append(value.Hour);
localBuilder.Append(':');
if(value.Minute <= 9){
localBuilder.Append('0');
}
localBuilder.Append(value.Minute);
localBuilder.Append(':');
if(value.Second <= 9){
localBuilder.Append('0');
}
localBuilder.Append(value.Second);
string offset = TimeZone.CurrentTimeZone.GetUtcOffset(value).ToString();
if (offset[0] != '-') {
localBuilder.Append(" +");
}
else{
localBuilder.Append(" ");
}
string[] offsetFields = offset.Split(':');
localBuilder.Append(offsetFields[0]);
localBuilder.Append(offsetFields[1]);
return (builder != null ? null : localBuilder.ToString());
}
internal static string GetTokenOrQuotedString(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_ttext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (!s_ttext[data[offset]] || data[offset] == ' ')
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('"');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_fqtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_fqtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append('"');
return (builder != null ? null : localBuilder.ToString());
}
}
//always a quoted string if it was empty.
if(data.Length == 0){
if (builder != null) {
builder.Append("\"\"");
}
else{
return "\"\"";
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
/*
// Consider removing.
internal static string GetAtomOrQuotedString(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (!s_atext[data[offset]] || data[offset] == ' ')
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('"');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_fqtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_fqtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append('"');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
*/
internal static string GetDotAtomOrQuotedString(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if ((data[offset] != '.' && !s_atext[data[offset]]) || data[offset] == ' ')
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('"');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_fqtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_fqtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append('"');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
/*
internal static string GetDotAtomOrNoFoldQuotedString(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (data[offset] != '.' && !s_atext[data[offset]])
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('"');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_qtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_qtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append('"');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
*/
/*
// Consider removing.
internal static string GetDotAtomOrNoFoldLiteral(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (data[offset] != '.' && !s_atext[data[offset]])
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('[');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_dtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_dtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append(']');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
*/
internal static string GetDotAtomOrDomainLiteral(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (data[offset] != '.' && !s_atext[data[offset]])
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('[');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_fdtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_fdtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append(']');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
internal static bool HasCROrLF(string data){
for (int i=0;i
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Net.Mime
{
using System;
using System.Text;
using System.Net.Mail;
using System.Globalization;
internal static class MailBnfHelper
{
static bool[] s_atext = new bool[128];
static bool[] s_qtext = new bool[128];
static bool[] s_fqtext = new bool[128];
static bool[] s_dtext = new bool[128];
static bool[] s_fdtext = new bool[128];
static bool[] s_ftext = new bool[128];
static bool[] s_ttext = new bool[128];
static bool[] s_digits = new bool[128];
static MailBnfHelper()
{
// atext = ALPHA / DIGIT / "!" / "#" / "$" / "%" / "&" / "'" / "*" / "+" / "-" / "/" / "=" / "?" / "^" / "_" / "`" / "{" / "|" / "}" / "~"
for (int i = '0'; i <= '9'; i++) { s_atext[i] = true; }
for (int i = 'A'; i <= 'Z'; i++) { s_atext[i] = true; }
for (int i = 'a'; i <= 'z'; i++) { s_atext[i] = true; }
s_atext['!'] = true;
s_atext['#'] = true;
s_atext['$'] = true;
s_atext['%'] = true;
s_atext['&'] = true;
s_atext['\''] = true;
s_atext['*'] = true;
s_atext['+'] = true;
s_atext['-'] = true;
s_atext['/'] = true;
s_atext['='] = true;
s_atext['?'] = true;
s_atext['^'] = true;
s_atext['_'] = true;
s_atext['`'] = true;
s_atext['{'] = true;
s_atext['|'] = true;
s_atext['}'] = true;
s_atext['~'] = true;
// qtext = %d1-8 / %d11 / %d12 / %d14-31 / %d33 / %d35-91 / %d93-127
for (int i = 1; i <= 8; i++) { s_qtext[i] = true; }
s_qtext[11] = true;
s_qtext[12] = true;
for (int i = 14; i <= 31; i++) { s_qtext[i] = true; }
s_qtext[33] = true;
for (int i = 35; i <= 91; i++) { s_qtext[i] = true; }
for (int i = 93; i <= 127; i++) { s_qtext[i] = true; }
// fqtext = %d1-9 / %d11 / %d12 / %d14-33 / %d35-91 / %d93-127
for (int i = 1; i <= 9; i++) { s_fqtext[i] = true; }
s_fqtext[11] = true;
s_fqtext[12] = true;
for (int i = 14; i <= 33; i++) { s_fqtext[i] = true; }
for (int i = 35; i <= 91; i++) { s_fqtext[i] = true; }
for (int i = 93; i <= 127; i++) { s_fqtext[i] = true; }
// dtext = %d1-8 / %d11 / %d12 / %d14-31 / %d33-90 / %d94-127
for (int i = 1; i <= 8; i++) { s_dtext[i] = true; }
s_dtext[11] = true;
s_dtext[12] = true;
for (int i = 14; i <= 31; i++) { s_dtext[i] = true; }
for (int i = 33; i <= 90; i++) { s_dtext[i] = true; }
for (int i = 94; i <= 127; i++) { s_dtext[i] = true; }
// fdtext = %d1-9 / %d11 / %d12 / %d14-90 / %d94-127
for (int i = 1; i <= 9; i++) { s_fdtext[i] = true; }
s_fdtext[11] = true;
s_fdtext[12] = true;
for (int i = 14; i <= 90; i++) { s_fdtext[i] = true; }
for (int i = 94; i <= 127; i++) { s_fdtext[i] = true; }
// ftext = %d33-57 / %d59-126
for (int i = 33; i <= 57; i++) { s_ftext[i] = true; }
for (int i = 59; i <= 126; i++) { s_ftext[i] = true; }
// ttext = %d33-126 except '()<>@,;:\"/[]?='
for (int i = 33; i <= 126; i++) { s_ttext[i] = true; }
s_ttext['('] = false;
s_ttext[')'] = false;
s_ttext['<'] = false;
s_ttext['>'] = false;
s_ttext['@'] = false;
s_ttext[','] = false;
s_ttext[';'] = false;
s_ttext[':'] = false;
s_ttext['\\'] = false;
s_ttext['"'] = false;
s_ttext['/'] = false;
s_ttext['['] = false;
s_ttext[']'] = false;
s_ttext['?'] = false;
s_ttext['='] = false;
// digits = %d48-57
for (int i = 48; i <= 57; i++)
s_digits[i] = true;
}
internal static bool SkipCFWS(string data, ref int offset)
{
int comments = 0;
for (;offset < data.Length ;offset++)
{
if (data[offset] > 127)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
else if (data[offset] == '\\' && comments > 0)
offset += 2;
else if (data[offset] == '(')
comments++;
else if (data[offset] == ')')
comments--;
else if (data[offset] != ' ' && data[offset] != '\t' && comments == 0)
return true;
if (comments < 0) {
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
//returns false if end of string
return false;
}
internal static bool SkipFWS(string data, ref int offset)
{
for (;offset < data.Length ;offset++)
{
if (data[offset] != ' ' && data[offset] != '\t')
return true;
}
//returns false if end of string
return false;
}
internal static void ValidateHeaderName(string data){
int offset = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_ftext.Length || !s_ftext[data[offset]])
throw new FormatException(SR.GetString(SR.InvalidHeaderName));
}
if (offset == 0)
throw new FormatException(SR.GetString(SR.InvalidHeaderName));
}
/*
// Consider removing.
internal static string ReadFieldName(string data, ref int offset, StringBuilder builder)
{
int start = offset;
for (; offset < data.Length; offset++)
{
if (data[offset] == ':')
break;
if (data[offset] > s_ftext.Length || !s_ftext[data[offset]])
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
if (start == 0 && offset == data.Length)
return data;
else
return data.Substring(start, offset - start);
}
*/
internal static string ReadQuotedString(string data, ref int offset, StringBuilder builder){
return ReadQuotedString(data, ref offset, builder,false);
}
internal static string ReadQuotedString(string data, ref int offset, StringBuilder builder,bool doesntRequireQuotes)
{
// assume first char is the opening quote
if(!doesntRequireQuotes){
++offset;
}
int start = offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length; offset++)
{
if (data[offset] == '\\')
{
localBuilder.Append(data, start, offset - start);
start = ++offset;
continue;
}
else if (data[offset] == '"')
{
localBuilder.Append(data, start, offset - start);
offset++;
return (builder != null ? null : localBuilder.ToString());
}
else if (!s_fqtext[data[offset]])
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
if(doesntRequireQuotes){
localBuilder.Append(data, start, offset - start);
return (builder != null ? null : localBuilder.ToString());
}
throw new FormatException(SR.GetString(SR.MailHeaderFieldMalformedHeader));
}
internal static string ReadPhrase(string data, ref int offset, StringBuilder builder)
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
bool addSP = false;
SkipCFWS(data, ref offset);
int start = offset;
while (SkipCFWS(data, ref offset))
{
if (data[offset] == '"')
{
if (addSP)
localBuilder.Append(' ');
ReadQuotedString(data, ref offset, localBuilder);
addSP = true;
}
else if (s_atext[data[offset]])
{
if (addSP)
localBuilder.Append(' ');
ReadAtom(data, ref offset, localBuilder);
addSP = true;
}
else
{
break;
}
}
if (start == offset) {
//we didn't get any text, which is a violation
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
return (builder != null ? null : localBuilder.ToString());
}
internal static string ReadAtom(string data, ref int offset, StringBuilder builder)
{
int start = offset;
string ret;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_atext[data[offset]])
{
//if we didn't find any data, then there was an error.
if(offset == start){
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
ret = data.Substring(start, offset - start);
if (builder != null)
{
builder.Append(ret);
return null;
}
else
{
return ret;
}
}
}
//if we didn't find any data, then there was an error.
if(offset == start){
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
ret = (start == 0 ? data : data.Substring(start));
if (builder != null)
{
builder.Append(ret);
return null;
}
else
{
return ret;
}
}
internal static string ReadDotAtom(string data, ref int offset, StringBuilder builder)
{
int start = offset;
bool validBuilder = true;
if (builder == null){
validBuilder = false;
builder = new StringBuilder();
}
if(data[offset]!='.'){
ReadAtom(data,ref offset, builder);
}
while(offset < data.Length && data[offset]=='.') {
builder.Append(data[offset++]);
ReadAtom(data,ref offset, builder);
}
if(validBuilder){
return null;
}
else{
return builder.ToString();
}
}
/*
// Consider removing.
internal static string ReadAddress(string data, ref int offset, StringBuilder builder)
{
int start = offset;
if (!SkipCFWS(data, ref offset))
return null;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
if (data[offset] == '"')
ReadQuotedString(data, ref offset, localBuilder);
else
ReadDotAtom(data, ref offset, localBuilder);
if (!SkipCFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
if (data[offset++] != '@')
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
if (!SkipCFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
localBuilder.Append('@');
if (data[offset] == '[')
ReadDomainLiteral(data, ref offset, localBuilder);
else
ReadDotAtom(data, ref offset, localBuilder);
return (builder != null ? null : localBuilder.ToString());
}
*/
internal static string ReadDomainLiteral(string data, ref int offset, StringBuilder builder)
{
// assume first char is the opening bracket
int start = ++offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length; offset++)
{
if (data[offset] == '\\')
{
localBuilder.Append(data, start, offset - start);
start = ++offset;
continue;
}
else if (data[offset] == ']')
{
localBuilder.Append(data, start, offset - start);
offset++;
return (builder != null ? null : localBuilder.ToString());
}
else if (data[offset] > s_fdtext.Length || !s_fdtext[data[offset]])
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
throw new FormatException(SR.GetString(SR.MailHeaderFieldMalformedHeader));
}
internal static string ReadParameterAttribute(string data, ref int offset, StringBuilder builder)
{
if (!SkipCFWS(data, ref offset))
return null; //
return ReadToken(data, ref offset, null);
}
/*
// Consider removing.
internal static string ReadParameterValue(string data, ref int offset, StringBuilder builder)
{
if (!SkipCFWS(data, ref offset))
return string.Empty;
if (data[offset] == '"')
return ReadQuotedString(data, ref offset, builder);
else
return ReadToken(data, ref offset, builder);
}
*/
internal static string ReadToken(string data, ref int offset, StringBuilder builder)
{
int start = offset;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_ttext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_ttext[data[offset]])
{
break;
}
}
if (start == offset) {
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
return data.Substring(start, offset - start);
}
/*
// Consider removing.
internal static string ReadNoFoldQuotedString(string data, ref int offset, StringBuilder builder)
{
// assume first char is the opening quote
int start = ++offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length; offset++)
{
if (data[offset] == '\\')
{
localBuilder.Append(data, start, offset - start);
start = ++offset;
continue;
}
else if (data[offset] == '"')
{
localBuilder.Append(data, start, offset - start);
offset++;
return (builder != null ? null : localBuilder.ToString());
}
else if (data[offset] > s_qtext.Length || !s_qtext[data[offset]])
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
throw new FormatException(SR.GetString(SR.MailHeaderFieldMalformedHeader));
}
/*
// Consider removing.
internal static string ReadNoFoldLiteral(string data, ref int offset, StringBuilder builder)
{
// assume first char is the opening bracket
int start = ++offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length; offset++)
{
if (data[offset] == '\\')
{
localBuilder.Append(data, start, offset - start);
start = ++offset;
continue;
}
else if (data[offset] == ']')
{
localBuilder.Append(data, start, offset - start);
offset++;
return (builder != null ? null : localBuilder.ToString());
}
else if (data[offset] > s_dtext.Length || !s_dtext[data[offset]])
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
}
throw new FormatException(SR.GetString(SR.MailHeaderFieldMalformedHeader));
}
*/
internal static string ReadAngleAddress(string data, ref int offset, StringBuilder builder)
{
if (offset >= data.Length) {
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
}
//first, need to get local part
SkipCFWS(data, ref offset);
if (data[offset] == '\"') {
ReadQuotedString(data,ref offset,builder);
}
else{
ReadDotAtom(data, ref offset, builder);
}
SkipCFWS(data,ref offset);
if (offset >= data.Length || data[offset] != '@') {
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
}
offset++;
SkipCFWS(data,ref offset);
string address = ReadAddressSpecDomain(data, ref offset, builder);
if (!SkipCFWS(data, ref offset) || data[offset++] != '>')
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
return address;
}
internal static string ReadAddressSpecDomain(string data,ref int offset, StringBuilder builder){
if (offset >= data.Length) {
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
}
builder.Append('@');
SkipCFWS(data, ref offset);
if (data[offset] == '['){
ReadDomainLiteral(data, ref offset, builder);
}
else{
ReadDotAtom(data, ref offset, builder);
}
SkipCFWS(data, ref offset);
return builder.ToString();
}
internal static string ReadMailAddress(string data, ref int offset, out string displayName){
string address = null;
Exception exception = null;
displayName = String.Empty;
StringBuilder builder = new StringBuilder();
try{
SkipCFWS(data, ref offset);
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
//angle address
if (data[offset] == '<')
{
offset++;
address = ReadAngleAddress(data, ref offset, builder);
return address;
}
//otherwise, its a group, mailbox-name-addr or mailbox-addr-spec
//get the first part
//this should skip CFWS internally before and after the phrase
ReadPhrase(data, ref offset, builder);
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
// ReadOneOrMoreQuotedStrings() and ReadOneOrMoreDotAtoms() both
// call SkipCFWS() before they return so the next character should
// not be a whitespace character.
switch (data[offset])
{
case '@':{
//the phrase was the local part
offset++;
address = ReadAddressSpecDomain(data,ref offset, builder);
break;
}
case '.': {
// the phrase was a dotatom, therefore this must be
// the localpart of a mail address or the display name.
ReadDotAtom(data, ref offset, builder);
SkipCFWS(data, ref offset);
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
if (data[offset] == '@') {
offset++;
address = ReadAddressSpecDomain(data,ref offset,builder);
}
else if (data[offset] == '<') {
displayName = builder.ToString();
builder = new StringBuilder();
offset++;
address = ReadAngleAddress(data, ref offset, builder);
}
else{
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
break;
}
case '\"':{
// the phrase was a quoted string, therefore this must be
// the localpart of a mail address, or the display name.
//skip whitespace and look at next character
offset++;
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
SkipCFWS(data, ref offset);
if (offset >= data.Length) {
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
//it was the display
if (data[offset] == '<') {
offset++;
address = ReadAngleAddress(data, ref offset, builder);
}
else{
//otherwise, it was the local part
address = ReadAddressSpecDomain(data,ref offset,builder);
}
break;
}
case '<':{
//the phrase was a display name
displayName = builder.ToString();
builder = new StringBuilder();
offset++;
address = ReadAngleAddress(data, ref offset, builder);
break;
}
case ':':{
exception = new FormatException(SR.GetString(SR.MailAddressUnsupportedFormat));
goto done;
}
default:
{
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
}
//next character better be whitespace, end of the data, or a comma. Otherwise, there was an error
if(offset < data.Length){
SkipCFWS(data, ref offset);
if(offset < data.Length && data[offset]!=','){
exception = new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
goto done;
}
}
}
catch(FormatException){
throw new FormatException(SR.GetString(SR.MailAddressInvalidFormat));
}
done:
if(exception != null){
throw exception;
}
return address;
}
internal static MailAddress ReadMailAddress(string data, ref int offset)
{
string displayName = null;
string address = ReadMailAddress(data, ref offset,out displayName);
return new MailAddress(address,displayName,0);
}
/*
// Consider removing.
// DATE
internal static string ReadDigits(string data, ref int offset, StringBuilder builder)
{
int start = offset;
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
for (; offset < data.Length && s_digits[data[offset]]; offset++);
localBuilder.Append(data, start, offset - start);
return (builder != null ? null : localBuilder.ToString());
}
*/
internal static DateTime ReadDateTime(string data, ref int offset)
{
if (!SkipCFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
//day of week is optional
if (IsValidDOW(data, ref offset)){
if(offset >= data.Length || data[offset] != ',')
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
offset++;
}
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
int day = ReadDateNumber(data, ref offset, 2);
if (offset >= data.Length || (data[offset] != ' ' && data[offset] != '\t'))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
int month = ReadMonth(data, ref offset);
if (offset >= data.Length || (data[offset] != ' ' && data[offset] != '\t'))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
int year = ReadDateNumber(data, ref offset, 4);
if (offset >= data.Length || (data[offset] != ' ' && data[offset] != '\t'))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
int hour = ReadDateNumber(data, ref offset,2);
if (offset >= data.Length || data[offset] != ':')
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
offset++;
int minute = ReadDateNumber(data, ref offset,2);
int second = 0;
if (offset < data.Length && data[offset] == ':')
{
offset++;
second = ReadDateNumber(data, ref offset,2);
}
if (!MailBnfHelper.SkipFWS(data, ref offset))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
if (offset >= data.Length || (data[offset] != '-' && data[offset] != '+'))
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
offset++;
int zone = ReadDateNumber(data, ref offset,4);
//
return new DateTime(year, month, day, hour, minute, second);
}
// date-time = [ day-of-week "," ] date FWS time [CFWS]
// day-of-week = ([FWS] day-name) / obs-day-of-week
// day-name = "Mon" / "Tue" / "Wed" / "Thu" / "Fri" / "Sat" / "Sun"
// date = day month year
// year = 4*DIGIT / obs-year
// month = (FWS month-name FWS) / obs-month
// month-name = "Jan" / "Feb" / "Mar" / "Apr" / "May" / "Jun" / "Jul" / "Aug" / "Sep" / "Oct" / "Nov" / "Dec"
// day = ([FWS] 1*2DIGIT) / obs-day
// time = time-of-day FWS zone
// time-of-day = hour ":" minute [ ":" second ]
// hour = 2DIGIT / obs-hour
// minute = 2DIGIT / obs-minute
// second = 2DIGIT / obs-second
// zone = (( "+" / "-" ) 4DIGIT) / obs-zone
static string[] s_months = new string[] { null, "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
static string[] s_days = new string[] {"Mon","Tue","Wed","Thu","Fri","Sat","Sun"};
static bool IsValidDOW(string data, ref int offset)
{
if(offset + 3 >= data.Length){
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
}
for(int i = 0; i= data.Length)
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
for (; offset < data.Length && offset < maxLength; offset++)
{
if (data[offset] < '0' || data[offset] > '9')
break;
res = (res * 10) + (data[offset] - '0');
}
if(res == 0)
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
return res;
}
static int ReadMonth(string data, ref int offset)
{
if (offset >= data.Length - 3)
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
switch (data[offset++])
{
case 'J': case 'j': // jan / jun / jul
switch (data[offset++])
{
case 'A': case 'a':
switch (data[offset++])
{
case 'N': case 'n': return 1;
}
break;
case 'U': case 'u':
switch (data[offset++])
{
case 'N': case 'n': return 6;
case 'L': case 'l': return 7;
}
break;
}
goto default;
case 'F': case 'f': // feb
switch (data[offset++])
{
case 'E': case 'e':
switch (data[offset++])
{
case 'B': case 'b': return 2;
}
break;
}
goto default;
case 'M': case 'm': // mar / may
switch (data[offset++])
{
case 'A': case 'a':
switch (data[offset++])
{
case 'Y': case 'y': return 5;
case 'R': case 'r': return 3;
}
break;
}
goto default;
case 'A': case 'a': // apr / aug
switch (data[offset++])
{
case 'P': case 'p':
switch (data[offset++])
{
case 'R': case 'r': return 4;
}
break;
case 'U': case 'u':
switch (data[offset++])
{
case 'G': case 'g': return 8;
}
break;
}
goto default;
case 'S': case 's': // sep
switch (data[offset++])
{
case 'E': case 'e':
switch (data[offset++])
{
case 'P': case 'p': return 9;
}
break;
}
goto default;
case 'O': case 'o': // Oct
switch (data[offset++])
{
case 'C': case 'c':
switch (data[offset++])
{
case 'T': case 't': return 10;
}
break;
}
goto default;
case 'N': case 'n': // Nov
switch (data[offset++])
{
case 'O': case 'o':
switch (data[offset++])
{
case 'V': case 'v': return 11;
}
break;
}
goto default;
case 'D': case 'd': // dec
switch (data[offset++])
{
case 'E':
case 'e':
switch (data[offset++])
{
case 'C': case 'c': return 12;
}
break;
}
goto default;
default:
throw new FormatException(SR.GetString(SR.MailDateInvalidFormat));
}
}
internal static string GetDateTimeString(DateTime value, StringBuilder builder)
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
localBuilder.Append(value.Day);
localBuilder.Append(' ');
localBuilder.Append(s_months[value.Month]);
localBuilder.Append(' ');
localBuilder.Append(value.Year);
localBuilder.Append(' ');
if(value.Hour <= 9){
localBuilder.Append('0');
}
localBuilder.Append(value.Hour);
localBuilder.Append(':');
if(value.Minute <= 9){
localBuilder.Append('0');
}
localBuilder.Append(value.Minute);
localBuilder.Append(':');
if(value.Second <= 9){
localBuilder.Append('0');
}
localBuilder.Append(value.Second);
string offset = TimeZone.CurrentTimeZone.GetUtcOffset(value).ToString();
if (offset[0] != '-') {
localBuilder.Append(" +");
}
else{
localBuilder.Append(" ");
}
string[] offsetFields = offset.Split(':');
localBuilder.Append(offsetFields[0]);
localBuilder.Append(offsetFields[1]);
return (builder != null ? null : localBuilder.ToString());
}
internal static string GetTokenOrQuotedString(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_ttext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (!s_ttext[data[offset]] || data[offset] == ' ')
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('"');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_fqtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_fqtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append('"');
return (builder != null ? null : localBuilder.ToString());
}
}
//always a quoted string if it was empty.
if(data.Length == 0){
if (builder != null) {
builder.Append("\"\"");
}
else{
return "\"\"";
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
/*
// Consider removing.
internal static string GetAtomOrQuotedString(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (!s_atext[data[offset]] || data[offset] == ' ')
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('"');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_fqtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_fqtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append('"');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
*/
internal static string GetDotAtomOrQuotedString(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if ((data[offset] != '.' && !s_atext[data[offset]]) || data[offset] == ' ')
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('"');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_fqtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_fqtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append('"');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
/*
internal static string GetDotAtomOrNoFoldQuotedString(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (data[offset] != '.' && !s_atext[data[offset]])
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('"');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_qtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_qtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append('"');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
*/
/*
// Consider removing.
internal static string GetDotAtomOrNoFoldLiteral(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (data[offset] != '.' && !s_atext[data[offset]])
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('[');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_dtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_dtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append(']');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
*/
internal static string GetDotAtomOrDomainLiteral(string data, StringBuilder builder)
{
int offset = 0, start = 0;
for (; offset < data.Length; offset++)
{
if (data[offset] > s_atext.Length)
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
if (data[offset] != '.' && !s_atext[data[offset]])
{
StringBuilder localBuilder = (builder != null ? builder : new StringBuilder());
builder.Append('[');
for (; offset < data.Length; offset++)
{
if (data[offset] > s_fdtext.Length)
{
throw new FormatException(SR.GetString(SR.MailHeaderFieldInvalidCharacter));
}
else if (!s_fdtext[data[offset]])
{
builder.Append(data, start, offset - start);
builder.Append('\\');
start = offset;
}
}
builder.Append(data, start, offset - start);
builder.Append(']');
return (builder != null ? null : localBuilder.ToString());
}
}
if (builder != null)
{
builder.Append(data);
return null;
}
return data;
}
internal static bool HasCROrLF(string data){
for (int i=0;i
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- documentsequencetextcontainer.cs
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