version 1.58, 2006/11/10 18:14:57
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version 1.60.4.1, 2007/06/08 10:40:29
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#include "XmlWriter.h" | #include "XmlWriter.h" |
#include "XmlReader.h" | #include "XmlReader.h" |
#include "ArrayInternal.h" | #include "ArrayInternal.h" |
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#include "HostAddress.h" |
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PEGASUS_NAMESPACE_BEGIN | PEGASUS_NAMESPACE_BEGIN |
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static Boolean isValidHostname(const String& hostname) | static Boolean isValidHostname(const String& hostname) |
{ | { |
//------------------------------------------------------------------ |
HostAddress addr(hostname); |
// Validate the hostname. The hostname value may or may not be a |
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// fully-qualified domain name (e.g., xyz.company.com) or may be an |
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// IP address. A port number may follow the hostname. |
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// Hostnames must match one of the following regular expressions: |
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// ^([A-Za-z0-9][A-Za-z0-9-]*)(\.[A-Za-z][A-Za-z0-9-]*)*(:[0-9]*)?$ |
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// ^([0-9]*\.[0-9]*\.[0-9]*\.[0-9]*)(:[0-9]*)?$ |
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// Note for Bug#1462. Be careful here, from RFC 1123: |
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// - The syntax of a legal Internet host name was specified in |
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// RFC-952 [DNS:4]. One aspect of host name syntax is hereby |
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// changed: the restriction on the first character is relaxed to |
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// allow either a letter or a digit. |
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// - If a dotted-decimal number can be entered without identifying |
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// delimiters, then a full syntactic check must be made, because |
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// a segment of a host domain name is now allowed to begin with a |
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// digit and could legally be entirely numeric (see Section 6.1.2.4). |
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// However, a valid host name can never have the dotted-decimal form |
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// #.#.#.#, since at least the highest-level component label will be |
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// alphabetic. |
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// The algorithm below has been updated accordingly. |
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//------------------------------------------------------------------ |
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Uint32 i = 0; |
return addr.isValid(); |
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Boolean isValid = false; |
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if (isascii(hostname[0]) && isdigit(hostname[0])) |
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{ |
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//-------------------------------------------------------------- |
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// Attempt to validate an IP address, but keep in mind that it |
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// might be a host name, since the leading character can now be |
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// a digit. |
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//-------------------------------------------------------------- |
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isValid = true; |
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for (Uint32 octet=1; octet<=4; octet++) |
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{ |
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Uint32 octetValue = 0; |
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//---------------------------------------------------------- |
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// If a non-digit is encountered in the input parameter, |
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// then break from here and attempt to validate as host name. |
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//---------------------------------------------------------- |
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if (!(isascii(hostname[i]) && isdigit(hostname[i]))) |
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{ |
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isValid = false; |
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break; |
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} |
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// skip over digits |
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while (isascii(hostname[i]) && isdigit(hostname[i])) |
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{ |
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octetValue = octetValue*10 + (hostname[i] - '0'); |
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i++; |
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} |
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if (octetValue > 255) |
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{ |
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isValid = false; |
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break; |
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} |
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// Check for invalid character in IP address |
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if ((octet != 4) && (hostname[i++] != '.')) |
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{ |
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isValid = false; |
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break; |
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} |
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// Check for the case where it's a valid host name that happens |
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// to have 4 (or more) leading all-numeric host segments. |
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if ((octet == 4) && (hostname[i] != ':') && |
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hostname[i] != char(0)) |
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{ |
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isValid = false; |
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break; |
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} |
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} |
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} |
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if (!isValid) // if it is not a valid IP address |
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{ |
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i = 0; // reset index for host name check |
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// Validate a host name |
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isValid = true; |
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Boolean expectHostSegment = true; |
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Boolean hostSegmentIsNumeric; |
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while (expectHostSegment == true) |
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{ |
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expectHostSegment = false; |
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hostSegmentIsNumeric = true; // assume all-numeric host segment |
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if (!(isascii(hostname[i]) && |
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(isalnum(hostname[i]) || (hostname[i] == '_')))) |
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{ |
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return false; |
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} |
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while (isascii(hostname[i]) && |
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(isalnum(hostname[i]) || (hostname[i] == '-') || |
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(hostname[i] == '_'))) |
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{ |
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// If a non-digit is encountered, set "all-numeric" |
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// flag to false |
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if (isalpha(hostname[i]) || (hostname[i] == '-') || |
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(hostname[i] == '_')) |
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{ |
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hostSegmentIsNumeric = false; |
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} |
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i++; |
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} |
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if (hostname[i] == '.') |
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{ |
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i++; |
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expectHostSegment = true; |
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} |
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} |
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// If the last Host Segment is all numeric, then return false. |
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// RFC 1123 says "highest-level component label will be alphabetic". |
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if (hostSegmentIsNumeric) |
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{ |
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return false; |
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} |
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} |
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if (!isValid) // if not a valid IP address or host name |
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{ |
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return false; |
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} |
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// Check for a port number: |
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if (hostname[i] == ':') |
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{ |
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i++; |
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if (!(isascii(hostname[i]) && isdigit(hostname[i]))) |
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{ |
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return false; |
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} |
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i++; |
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while (isascii(hostname[i]) && isdigit(hostname[i])) |
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{ |
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i++; |
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} |
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} |
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return (hostname[i] == char(0)); |
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} | } |
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// | // |