Update Bonjour sdk from 333 to 878.200.35

bonjour-sdk/dnssd_clientlib.c

@@ -1,28 +1,28 @@
 /* -*- Mode: C; tab-width: 4 -*-
  *
- * Copyright (c) 2004, Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2004-2018 Apple Inc. All rights reserved.
  *
- * Redistribution and use in source and binary forms, with or without 
+ * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
- * 1.  Redistributions of source code must retain the above copyright notice, 
+ * 1.  Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer. 
+ *     this list of conditions and the following disclaimer.
- * 2.  Redistributions in binary form must reproduce the above copyright notice, 
+ * 2.  Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation 
+ *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution. 
+ *     and/or other materials provided with the distribution.
- * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of its 
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of its
- *     contributors may be used to endorse or promote products derived from this 
+ *     contributors may be used to endorse or promote products derived from this
- *     software without specific prior written permission. 
+ *     software without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
@@ -31,22 +31,18 @@
 
 #include "dns_sd.h"
 
-#if MDNS_BUILDINGSHAREDLIBRARY || MDNS_BUILDINGSTUBLIBRARY
-#pragma export on
-#endif
-
 #if defined(_WIN32)
 // disable warning "conversion from <data> to uint16_t"
 #pragma warning(disable:4244)
 #define strncasecmp _strnicmp
-#define strcasecmp _stricmp 
+#define strcasecmp _stricmp
 #endif
 
 /*********************************************************************************************
- *
+*
- *  Supporting Functions
+*  Supporting Functions
- *
+*
- *********************************************************************************************/
+*********************************************************************************************/
 
 #define mDNSIsDigit(X)     ((X) >= '0' && (X) <= '9')
 
@@ -54,313 +50,321 @@
 // (DNSServiceConstructFullName depends this returning 1 for true, rather than any non-zero value meaning true)
 
 static int DomainEndsInDot(const char *dom)
-	{
+{
-	while (dom[0] && dom[1])
+    while (dom[0] && dom[1])
-		{
+    {
-		if (dom[0] == '\\') // advance past escaped byte sequence
+        if (dom[0] == '\\') // advance past escaped byte sequence
-			{
+        {
-			if (mDNSIsDigit(dom[1]) && mDNSIsDigit(dom[2]) && mDNSIsDigit(dom[3]))
+            if (mDNSIsDigit(dom[1]) && mDNSIsDigit(dom[2]) && mDNSIsDigit(dom[3]))
-				dom += 4;			// If "\ddd"    then skip four
+                dom += 4;           // If "\ddd"    then skip four
-			else dom += 2;			// else if "\x" then skip two
+            else dom += 2;          // else if "\x" then skip two
-			}
+        }
-		else dom++;					// else goto next character
+        else dom++;                 // else goto next character
-		}
+    }
-	return (dom[0] == '.');
+    return (dom[0] == '.');
-	}
+}
 
 static uint8_t *InternalTXTRecordSearch
-	(
+(
-	uint16_t         txtLen,
+    uint16_t txtLen,
-	const void       *txtRecord,
+    const void       *txtRecord,
-	const char       *key,
+    const char       *key,
-	unsigned long    *keylen
+    unsigned long    *keylen
-	)
+)
-	{
+{
-	uint8_t *p = (uint8_t*)txtRecord;
+    uint8_t *p = (uint8_t*)txtRecord;
-	uint8_t *e = p + txtLen;
+    uint8_t *e = p + txtLen;
-	*keylen = (unsigned long) strlen(key);
+    *keylen = (unsigned long) strlen(key);
-	while (p<e)
+    while (p<e)
-		{
+    {
-		uint8_t *x = p;
+        uint8_t *x = p;
-		p += 1 + p[0];
+        p += 1 + p[0];
-		if (p <= e && *keylen <= x[0] && !strncasecmp(key, (char*)x+1, *keylen))
+        if (p <= e && *keylen <= x[0] && !strncasecmp(key, (char*)x+1, *keylen))
-			if (*keylen == x[0] || x[1+*keylen] == '=') return(x);
+            if (*keylen == x[0] || x[1+*keylen] == '=') return(x);
-		}
+    }
-	return(NULL);
+    return(NULL);
-	}
+}
 
 /*********************************************************************************************
- *
+*
- *  General Utility Functions
+*  General Utility Functions
- *
+*
- *********************************************************************************************/
+*********************************************************************************************/
 
 // Note: Need to make sure we don't write more than kDNSServiceMaxDomainName (1009) bytes to fullName
 // In earlier builds this constant was defined to be 1005, so to avoid buffer overruns on clients
 // compiled with that constant we'll actually limit the output to 1005 bytes.
 
 DNSServiceErrorType DNSSD_API DNSServiceConstructFullName
-	(
+(
-	char       *const fullName,
+    char       *const fullName,
-	const char *const service,      // May be NULL
+    const char *const service,      // May be NULL
-	const char *const regtype,
+    const char *const regtype,
-	const char *const domain
+    const char *const domain
-	)
+)
-	{
+{
-	const size_t len = !regtype ? 0 : strlen(regtype) - DomainEndsInDot(regtype);
+    const size_t len = !regtype ? 0 : strlen(regtype) - DomainEndsInDot(regtype);
-	char       *fn   = fullName;
+    char       *fn   = fullName;
-	char *const lim  = fullName + 1005;
+    char *const lim  = fullName + 1005;
-	const char *s    = service;
+    const char *s    = service;
-	const char *r    = regtype;
+    const char *r    = regtype;
-	const char *d    = domain;
+    const char *d    = domain;
 
-	// regtype must be at least "x._udp" or "x._tcp"
+    // regtype must be at least "x._udp" or "x._tcp"
-	if (len < 6 || !domain || !domain[0]) return kDNSServiceErr_BadParam;
+    if (len < 6 || !domain || !domain[0]) return kDNSServiceErr_BadParam;
-	if (strncasecmp((regtype + len - 4), "_tcp", 4) && strncasecmp((regtype + len - 4), "_udp", 4)) return kDNSServiceErr_BadParam;
+    if (strncasecmp((regtype + len - 4), "_tcp", 4) && strncasecmp((regtype + len - 4), "_udp", 4)) return kDNSServiceErr_BadParam;
 
-	if (service && *service)
+    if (service && *service)
-		{
+    {
-		while (*s)
+        while (*s)
-			{
+        {
-			unsigned char c = *s++;				// Needs to be unsigned, or values like 0xFF will be interpreted as < 32
+            unsigned char c = *s++;             // Needs to be unsigned, or values like 0xFF will be interpreted as < 32
-			if (c <= ' ')						// Escape non-printable characters
+            if (c <= ' ')                       // Escape non-printable characters
-				{
+            {
-				if (fn+4 >= lim) goto fail;
+                if (fn+4 >= lim) goto fail;
-				*fn++ = '\\';
+                *fn++ = '\\';
-				*fn++ = '0' + (c / 100);
+                *fn++ = '0' + (c / 100);
-				*fn++ = '0' + (c /  10) % 10;
+                *fn++ = '0' + (c /  10) % 10;
-				c     = '0' + (c      ) % 10;
+                c     = '0' + (c      ) % 10;
-				}
+            }
-			else if (c == '.' || (c == '\\'))	// Escape dot and backslash literals
+            else if (c == '.' || (c == '\\'))   // Escape dot and backslash literals
-				{
+            {
-				if (fn+2 >= lim) goto fail;
+                if (fn+2 >= lim) goto fail;
-				*fn++ = '\\';
+                *fn++ = '\\';
-				}
+            }
-			else
+            else
-				if (fn+1 >= lim) goto fail;
+            if (fn+1 >= lim) goto fail;
-			*fn++ = (char)c;
+            *fn++ = (char)c;
-			}
+        }
-		*fn++ = '.';
+        *fn++ = '.';
-		}
+    }
 
-	while (*r) if (fn+1 >= lim) goto fail; else *fn++ = *r++;
+    while (*r) if (fn+1 >= lim) goto fail;else *fn++ = *r++;
-	if (!DomainEndsInDot(regtype)) { if (fn+1 >= lim) goto fail; else *fn++ = '.'; }
+    if (!DomainEndsInDot(regtype)) { if (fn+1 >= lim) goto fail;else *fn++ = '.';}
 
-	while (*d) if (fn+1 >= lim) goto fail; else *fn++ = *d++;
+    while (*d) if (fn+1 >= lim) goto fail;else *fn++ = *d++;
-	if (!DomainEndsInDot(domain)) { if (fn+1 >= lim) goto fail; else *fn++ = '.'; }
+    if (!DomainEndsInDot(domain)) { if (fn+1 >= lim) goto fail;else *fn++ = '.';}
 
-	*fn = '\0';
+    *fn = '\0';
-	return kDNSServiceErr_NoError;
+    return kDNSServiceErr_NoError;
 
 fail:
-	*fn = '\0';
+    *fn = '\0';
-	return kDNSServiceErr_BadParam;
+    return kDNSServiceErr_BadParam;
-	}
+}
 
 /*********************************************************************************************
- *
+*
- *   TXT Record Construction Functions
+*   TXT Record Construction Functions
- *
+*
- *********************************************************************************************/
+*********************************************************************************************/
 
 typedef struct _TXTRecordRefRealType
-	{
+{
-	uint8_t  *buffer;		// Pointer to data
+    uint8_t  *buffer;       // Pointer to data
-	uint16_t buflen;		// Length of buffer
+    uint16_t buflen;        // Length of buffer
-	uint16_t datalen;		// Length currently in use
+    uint16_t datalen;       // Length currently in use
-	uint16_t malloced;	// Non-zero if buffer was allocated via malloc()
+    uint16_t malloced;  // Non-zero if buffer was allocated via malloc()
-	} TXTRecordRefRealType;
+} TXTRecordRefRealType;
 
 #define txtRec ((TXTRecordRefRealType*)txtRecord)
 
 // The opaque storage defined in the public dns_sd.h header is 16 bytes;
 // make sure we don't exceed that.
 struct CompileTimeAssertionCheck_dnssd_clientlib
-	{
+{
-	char assert0[(sizeof(TXTRecordRefRealType) <= 16) ? 1 : -1];
+    char assert0[(sizeof(TXTRecordRefRealType) <= 16) ? 1 : -1];
-	};
+};
 
 void DNSSD_API TXTRecordCreate
-	(
+(
-	TXTRecordRef     *txtRecord,
+    TXTRecordRef     *txtRecord,
-	uint16_t         bufferLen,
+    uint16_t bufferLen,
-	void             *buffer
+    void             *buffer
-	)
+)
-	{
+{
-	txtRec->buffer   = buffer;
+    txtRec->buffer   = buffer;
-	txtRec->buflen   = buffer ? bufferLen : (uint16_t)0;
+    txtRec->buflen   = buffer ? bufferLen : (uint16_t)0;
-	txtRec->datalen  = 0;
+    txtRec->datalen  = 0;
-	txtRec->malloced = 0;
+    txtRec->malloced = 0;
-	}
+}
 
 void DNSSD_API TXTRecordDeallocate(TXTRecordRef *txtRecord)
-	{
+{
-	if (txtRec->malloced) free(txtRec->buffer);
+    if (txtRec->malloced) free(txtRec->buffer);
-	}
+}
 
 DNSServiceErrorType DNSSD_API TXTRecordSetValue
-	(
+(
-	TXTRecordRef     *txtRecord,
+    TXTRecordRef     *txtRecord,
-	const char       *key,
+    const char       *key,
-	uint8_t          valueSize,
+    uint8_t valueSize,
-	const void       *value
+    const void       *value
-	)
+)
-	{
+{
-	uint8_t *start, *p;
+    uint8_t *start, *p;
-	const char *k;
+    const char *k;
-	unsigned long keysize, keyvalsize;
+    unsigned long keysize, keyvalsize;
 
-	for (k = key; *k; k++) if (*k < 0x20 || *k > 0x7E || *k == '=') return(kDNSServiceErr_Invalid);
+    for (k = key; *k; k++) if (*k < 0x20 || *k > 0x7E || *k == '=') return(kDNSServiceErr_Invalid);
-	keysize = (unsigned long)(k - key);
+    keysize = (unsigned long)(k - key);
-	keyvalsize = 1 + keysize + (value ? (1 + valueSize) : 0);
+    keyvalsize = 1 + keysize + (value ? (1 + valueSize) : 0);
-	if (keysize < 1 || keyvalsize > 255) return(kDNSServiceErr_Invalid);
+    if (keysize < 1 || keyvalsize > 255) return(kDNSServiceErr_Invalid);
-	(void)TXTRecordRemoveValue(txtRecord, key);
+    (void)TXTRecordRemoveValue(txtRecord, key);
-	if (txtRec->datalen + keyvalsize > txtRec->buflen)
+    if (txtRec->datalen + keyvalsize > txtRec->buflen)
-		{
+    {
-		unsigned char *newbuf;
+        unsigned char *newbuf;
-		unsigned long newlen = txtRec->datalen + keyvalsize;
+        unsigned long newlen = txtRec->datalen + keyvalsize;
-		if (newlen > 0xFFFF) return(kDNSServiceErr_Invalid);
+        if (newlen > 0xFFFF) return(kDNSServiceErr_Invalid);
-		newbuf = malloc((size_t)newlen);
+        newbuf = malloc((size_t)newlen);
-		if (!newbuf) return(kDNSServiceErr_NoMemory);
+        if (!newbuf) return(kDNSServiceErr_NoMemory);
-		memcpy(newbuf, txtRec->buffer, txtRec->datalen);
+        memcpy(newbuf, txtRec->buffer, txtRec->datalen);
-		if (txtRec->malloced) free(txtRec->buffer);
+        if (txtRec->malloced) free(txtRec->buffer);
-		txtRec->buffer = newbuf;
+        txtRec->buffer = newbuf;
-		txtRec->buflen = (uint16_t)(newlen);
+        txtRec->buflen = (uint16_t)(newlen);
-		txtRec->malloced = 1;
+        txtRec->malloced = 1;
-		}
+    }
-	start = txtRec->buffer + txtRec->datalen;
+    start = txtRec->buffer + txtRec->datalen;
-	p = start + 1;
+    p = start + 1;
-	memcpy(p, key, keysize);
+    memcpy(p, key, keysize);
-	p += keysize;
+    p += keysize;
-	if (value)
+    if (value)
-		{
+    {
-		*p++ = '=';
+        *p++ = '=';
-		memcpy(p, value, valueSize);
+        memcpy(p, value, valueSize);
-		p += valueSize;
+        p += valueSize;
-		}
+    }
-	*start = (uint8_t)(p - start - 1);
+    *start = (uint8_t)(p - start - 1);
-	txtRec->datalen += p - start;
+    txtRec->datalen += p - start;
-	return(kDNSServiceErr_NoError);
+    return(kDNSServiceErr_NoError);
-	}
+}
 
 DNSServiceErrorType DNSSD_API TXTRecordRemoveValue
-	(
+(
-	TXTRecordRef     *txtRecord,
+    TXTRecordRef     *txtRecord,
-	const char       *key
+    const char       *key
-	)
+)
-	{
+{
-	unsigned long keylen, itemlen, remainder;
+    unsigned long keylen, itemlen, remainder;
-	uint8_t *item = InternalTXTRecordSearch(txtRec->datalen, txtRec->buffer, key, &keylen);
+    uint8_t *item = InternalTXTRecordSearch(txtRec->datalen, txtRec->buffer, key, &keylen);
-	if (!item) return(kDNSServiceErr_NoSuchKey);
+    if (!item) return(kDNSServiceErr_NoSuchKey);
-	itemlen   = (unsigned long)(1 + item[0]);
+    itemlen   = (unsigned long)(1 + item[0]);
-	remainder = (unsigned long)((txtRec->buffer + txtRec->datalen) - (item + itemlen));
+    remainder = (unsigned long)((txtRec->buffer + txtRec->datalen) - (item + itemlen));
-	// Use memmove because memcpy behaviour is undefined for overlapping regions
+    // Use memmove because memcpy behaviour is undefined for overlapping regions
-	memmove(item, item + itemlen, remainder);
+    memmove(item, item + itemlen, remainder);
-	txtRec->datalen -= itemlen;
+    txtRec->datalen -= itemlen;
-	return(kDNSServiceErr_NoError);
+    return(kDNSServiceErr_NoError);
-	}
+}
 
 uint16_t DNSSD_API TXTRecordGetLength  (const TXTRecordRef *txtRecord) { return(txtRec->datalen); }
 const void * DNSSD_API TXTRecordGetBytesPtr(const TXTRecordRef *txtRecord) { return(txtRec->buffer); }
 
 /*********************************************************************************************
- *
+*
- *   TXT Record Parsing Functions
+*   TXT Record Parsing Functions
- *
+*
- *********************************************************************************************/
+*********************************************************************************************/
 
 int DNSSD_API TXTRecordContainsKey
-	(
+(
-	uint16_t         txtLen,
+    uint16_t txtLen,
-	const void       *txtRecord,
+    const void       *txtRecord,
-	const char       *key
+    const char       *key
-	)
+)
-	{
+{
-	unsigned long keylen;
+    unsigned long keylen;
-	return (InternalTXTRecordSearch(txtLen, txtRecord, key, &keylen) ? 1 : 0);
+    return (InternalTXTRecordSearch(txtLen, txtRecord, key, &keylen) ? 1 : 0);
-	}
+}
 
 const void * DNSSD_API TXTRecordGetValuePtr
-	(
+(
-	uint16_t         txtLen,
+    uint16_t txtLen,
-	const void       *txtRecord,
+    const void       *txtRecord,
-	const char       *key,
+    const char       *key,
-	uint8_t          *valueLen
+    uint8_t          *valueLen
-	)
+)
-	{
+{
-	unsigned long keylen;
+    unsigned long keylen;
-	uint8_t *item = InternalTXTRecordSearch(txtLen, txtRecord, key, &keylen);
+    uint8_t *item = InternalTXTRecordSearch(txtLen, txtRecord, key, &keylen);
-	if (!item || item[0] <= keylen) return(NULL);	// If key not found, or found with no value, return NULL
+    if (!item || item[0] <= keylen) return(NULL);   // If key not found, or found with no value, return NULL
-	*valueLen = (uint8_t)(item[0] - (keylen + 1));
+    *valueLen = (uint8_t)(item[0] - (keylen + 1));
-	return (item + 1 + keylen + 1);
+    return (item + 1 + keylen + 1);
-	}
+}
 
 uint16_t DNSSD_API TXTRecordGetCount
-	(
+(
-	uint16_t         txtLen,
+    uint16_t txtLen,
-	const void       *txtRecord
+    const void       *txtRecord
-	)
+)
-	{
+{
-	uint16_t count = 0;
+    uint16_t count = 0;
-	uint8_t *p = (uint8_t*)txtRecord;
+    uint8_t *p = (uint8_t*)txtRecord;
-	uint8_t *e = p + txtLen;
+    uint8_t *e = p + txtLen;
-	while (p<e) { p += 1 + p[0]; count++; }
+    while (p<e) { p += 1 + p[0]; count++; }
-	return((p>e) ? (uint16_t)0 : count);
+    return((p>e) ? (uint16_t)0 : count);
-	}
+}
 
 DNSServiceErrorType DNSSD_API TXTRecordGetItemAtIndex
-	(
+(
-	uint16_t         txtLen,
+    uint16_t txtLen,
-	const void       *txtRecord,
+    const void       *txtRecord,
-	uint16_t         itemIndex,
+    uint16_t itemIndex,
-	uint16_t         keyBufLen,
+    uint16_t keyBufLen,
-	char             *key,
+    char             *key,
-	uint8_t          *valueLen,
+    uint8_t          *valueLen,
-	const void       **value
+    const void       **value
-	)
+)
-	{
+{
-	uint16_t count = 0;
+    uint16_t count = 0;
-	uint8_t *p = (uint8_t*)txtRecord;
+    uint8_t *p = (uint8_t*)txtRecord;
-	uint8_t *e = p + txtLen;
+    uint8_t *e = p + txtLen;
-	while (p<e && count<itemIndex) { p += 1 + p[0]; count++; }	// Find requested item
+    while (p<e && count<itemIndex) { p += 1 + p[0]; count++; }  // Find requested item
-	if (p<e && p + 1 + p[0] <= e)	// If valid
+    if (p<e && p + 1 + p[0] <= e)   // If valid
-		{
+    {
-		uint8_t *x = p+1;
+        uint8_t *x = p+1;
-		unsigned long len = 0;
+        unsigned long len = 0;
-		e = p + 1 + p[0];
+        e = p + 1 + p[0];
-		while (x+len<e && x[len] != '=') len++;
+        while (x+len<e && x[len] != '=') len++;
-		if (len >= keyBufLen) return(kDNSServiceErr_NoMemory);
+        if (len >= keyBufLen) return(kDNSServiceErr_NoMemory);
-		memcpy(key, x, len);
+        memcpy(key, x, len);
-		key[len] = 0;
+        key[len] = 0;
-		if (x+len<e)		// If we found '='
+        if (x+len<e)        // If we found '='
-			{
+        {
-			*value = x + len + 1;
+            *value = x + len + 1;
-			*valueLen = (uint8_t)(p[0] - (len + 1));
+            *valueLen = (uint8_t)(p[0] - (len + 1));
-			}
+        }
-		else
+        else
-			{
+        {
-			*value = NULL;
+            *value = NULL;
-			*valueLen = 0;
+            *valueLen = 0;
-			}
+        }
-		return(kDNSServiceErr_NoError);
+        return(kDNSServiceErr_NoError);
-		}
+    }
-	return(kDNSServiceErr_Invalid);
+    return(kDNSServiceErr_Invalid);
-	}
+}
 
 /*********************************************************************************************
- *
+*
- *   SCCS-compatible version string
+*   SCCS-compatible version string
- *
+*
- *********************************************************************************************/
+*********************************************************************************************/
 
 // For convenience when using the "strings" command, this is the last thing in the file
 
 // Note: The C preprocessor stringify operator ('#') makes a string from its argument, without macro expansion
 // e.g. If "version" is #define'd to be "4", then STRINGIFY_AWE(version) will return the string "version", not "4"
 // To expand "version" to its value before making the string, use STRINGIFY(version) instead
-#define STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s) #s
+#define STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s) # s
 #define STRINGIFY(s) STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s)
 
+// The "used" variable attribute prevents a non-exported variable from being stripped, even if its visibility is hidden,
+// e.g., when compiling with -fvisibility=hidden.
+#if defined(__GNUC__)
+#define DNSSD_USED __attribute__((used))
+#else
+#define DNSSD_USED
+#endif
+
 // NOT static -- otherwise the compiler may optimize it out
 // The "@(#) " pattern is a special prefix the "what" command looks for
-const char VersionString_SCCS_libdnssd[] = "@(#) libdns_sd " STRINGIFY(mDNSResponderVersion) " (" __DATE__ " " __TIME__ ")";
+const char VersionString_SCCS_libdnssd[] DNSSD_USED = "@(#) libdns_sd " STRINGIFY(mDNSResponderVersion) " (" __DATE__ " " __TIME__ ")";

bonjour-sdk/dnssd_ipc.c

@@ -1,6 +1,6 @@
 /* -*- Mode: C; tab-width: 4 -*-
  *
- * Copyright (c) 2003-2004, Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2003-2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -10,7 +10,7 @@
  * 2.  Redistributions in binary form must reproduce the above copyright notice,
  *     this list of conditions and the following disclaimer in the documentation
  *     and/or other materials provided with the distribution.
- * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of its
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of its
  *     contributors may be used to endorse or promote products derived from this
  *     software without specific prior written permission.
  *
@@ -31,131 +31,131 @@
 #if defined(_WIN32)
 
 char *win32_strerror(int inErrorCode)
-	{
+{
-	static char buffer[1024];
+    static char buffer[1024];
-	DWORD       n;
+    DWORD n;
-	memset(buffer, 0, sizeof(buffer));
+    memset(buffer, 0, sizeof(buffer));
-	n = FormatMessageA(
+    n = FormatMessageA(
-			FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+        FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
-			NULL,
+        NULL,
-			(DWORD) inErrorCode,
+        (DWORD) inErrorCode,
-			MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-			buffer,
+        buffer,
-			sizeof(buffer),
+        sizeof(buffer),
-			NULL);
+        NULL);
-	if (n > 0)
+    if (n > 0)
-		{
+    {
-		// Remove any trailing CR's or LF's since some messages have them.
+        // Remove any trailing CR's or LF's since some messages have them.
-		while ((n > 0) && isspace(((unsigned char *) buffer)[n - 1]))
+        while ((n > 0) && isspace(((unsigned char *) buffer)[n - 1]))
-			buffer[--n] = '\0';
+            buffer[--n] = '\0';
-		}
+    }
-	return buffer;
+    return buffer;
-	}
+}
 
 #endif
 
 void put_uint32(const uint32_t l, char **ptr)
-	{
+{
-	(*ptr)[0] = (char)((l >> 24) &  0xFF);
+    (*ptr)[0] = (char)((l >> 24) &  0xFF);
-	(*ptr)[1] = (char)((l >> 16) &  0xFF);
+    (*ptr)[1] = (char)((l >> 16) &  0xFF);
-	(*ptr)[2] = (char)((l >>  8) &  0xFF);
+    (*ptr)[2] = (char)((l >>  8) &  0xFF);
-	(*ptr)[3] = (char)((l      ) &  0xFF);
+    (*ptr)[3] = (char)((l      ) &  0xFF);
-	*ptr += sizeof(uint32_t);
+    *ptr += sizeof(uint32_t);
-	}
+}
 
 uint32_t get_uint32(const char **ptr, const char *end)
-	{
+{
-	if (!*ptr || *ptr + sizeof(uint32_t) > end)
+    if (!*ptr || *ptr + sizeof(uint32_t) > end)
-		{
+    {
-		*ptr = NULL;
+        *ptr = NULL;
-		return(0);
+        return(0);
-		}
+    }
-	else
+    else
-		{
+    {
-		uint8_t *p = (uint8_t*) *ptr;
+        uint8_t *p = (uint8_t*) *ptr;
-		*ptr += sizeof(uint32_t);
+        *ptr += sizeof(uint32_t);
-		return((uint32_t) ((uint32_t)p[0] << 24 | (uint32_t)p[1] << 16 | (uint32_t)p[2] << 8 | p[3]));
+        return((uint32_t) ((uint32_t)p[0] << 24 | (uint32_t)p[1] << 16 | (uint32_t)p[2] << 8 | p[3]));
-		}
+    }
-	}
+}
 
 void put_uint16(uint16_t s, char **ptr)
-	{
+{
-	(*ptr)[0] = (char)((s >>  8) &  0xFF);
+    (*ptr)[0] = (char)((s >>  8) &  0xFF);
-	(*ptr)[1] = (char)((s      ) &  0xFF);
+    (*ptr)[1] = (char)((s      ) &  0xFF);
-	*ptr += sizeof(uint16_t);
+    *ptr += sizeof(uint16_t);
-	}
+}
 
 uint16_t get_uint16(const char **ptr, const char *end)
-	{
+{
-	if (!*ptr || *ptr + sizeof(uint16_t) > end)
+    if (!*ptr || *ptr + sizeof(uint16_t) > end)
-		{
+    {
-		*ptr = NULL;
+        *ptr = NULL;
-		return(0);
+        return(0);
-		}
+    }
-	else
+    else
-		{
+    {
-		uint8_t *p = (uint8_t*) *ptr;
+        uint8_t *p = (uint8_t*) *ptr;
-		*ptr += sizeof(uint16_t);
+        *ptr += sizeof(uint16_t);
-		return((uint16_t) ((uint16_t)p[0] << 8 | p[1]));
+        return((uint16_t) ((uint16_t)p[0] << 8 | p[1]));
-		}
+    }
-	}
+}
 
 int put_string(const char *str, char **ptr)
-	{
+{
-	if (!str) str = "";
+    if (!str) str = "";
-	strcpy(*ptr, str);
+    strcpy(*ptr, str);
-	*ptr += strlen(str) + 1;
+    *ptr += strlen(str) + 1;
-	return 0;
+    return 0;
-	}
+}
 
 int get_string(const char **ptr, const char *const end, char *buffer, int buflen)
-	{
+{
-	if (!*ptr)
+    if (!*ptr)
-		{
+    {
-		*buffer = 0;
+        *buffer = 0;
-		return(-1);
+        return(-1);
-		}
+    }
-	else
+    else
-		{
+    {
-		char *lim = buffer + buflen;	// Calculate limit
+        char *lim = buffer + buflen;    // Calculate limit
-		while (*ptr < end && buffer < lim)
+        while (*ptr < end && buffer < lim)
-			{
+        {
-			char c = *buffer++ = *(*ptr)++;
+            char c = *buffer++ = *(*ptr)++;
-			if (c == 0) return(0);		// Success
+            if (c == 0) return(0);      // Success
-			}
+        }
-		if (buffer == lim) buffer--;
+        if (buffer == lim) buffer--;
-		*buffer = 0;					// Failed, so terminate string,
+        *buffer = 0;                    // Failed, so terminate string,
-		*ptr = NULL;					// clear pointer,
+        *ptr = NULL;                    // clear pointer,
-		return(-1);						// and return failure indication
+        return(-1);                     // and return failure indication
-		}
+    }
-	}
+}
 
 void put_rdata(const int rdlen, const unsigned char *rdata, char **ptr)
-	{
+{
-	memcpy(*ptr, rdata, rdlen);
+    memcpy(*ptr, rdata, rdlen);
-	*ptr += rdlen;
+    *ptr += rdlen;
-	}
+}
 
 const char *get_rdata(const char **ptr, const char *end, int rdlen)
-	{
+{
-	if (!*ptr || *ptr + rdlen > end)
+    if (!*ptr || *ptr + rdlen > end)
-		{
+    {
-		*ptr = NULL;
+        *ptr = NULL;
-		return(0);
+        return(0);
-		}
+    }
-	else
+    else
-		{
+    {
-		const char *rd = *ptr;
+        const char *rd = *ptr;
-		*ptr += rdlen;
+        *ptr += rdlen;
-		return rd;
+        return rd;
-		}
+    }
-	}
+}
 
 void ConvertHeaderBytes(ipc_msg_hdr *hdr)
-	{
+{
-	hdr->version   = htonl(hdr->version);
+    hdr->version   = htonl(hdr->version);
-	hdr->datalen   = htonl(hdr->datalen);
+    hdr->datalen   = htonl(hdr->datalen);
-	hdr->ipc_flags = htonl(hdr->ipc_flags);
+    hdr->ipc_flags = htonl(hdr->ipc_flags);
-	hdr->op        = htonl(hdr->op );
+    hdr->op        = htonl(hdr->op );
-	hdr->reg_index = htonl(hdr->reg_index);
+    hdr->reg_index = htonl(hdr->reg_index);
-	}
+}

bonjour-sdk/dnssd_ipc.h

@@ -1,6 +1,6 @@
 /* -*- Mode: C; tab-width: 4 -*-
  *
- * Copyright (c) 2003-2004, Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2003-2015 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -10,7 +10,7 @@
  * 2.  Redistributions in binary form must reproduce the above copyright notice,
  *     this list of conditions and the following disclaimer in the documentation
  *     and/or other materials provided with the distribution.
- * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of its
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of its
  *     contributors may be used to endorse or promote products derived from this
  *     software without specific prior written permission.
  *
@@ -35,72 +35,72 @@
 // Common cross platform services
 //
 #if defined(WIN32)
-#	include <winsock2.h>
+#   include <winsock2.h>
-#	define dnssd_InvalidSocket	INVALID_SOCKET
+#   define dnssd_InvalidSocket  INVALID_SOCKET
-#	define dnssd_SocketValid(s) ((s) != INVALID_SOCKET)
+#   define dnssd_SocketValid(s) ((s) != INVALID_SOCKET)
-#	define dnssd_EWOULDBLOCK	WSAEWOULDBLOCK
+#   define dnssd_EWOULDBLOCK    WSAEWOULDBLOCK
-#	define dnssd_EINTR			WSAEINTR
+#   define dnssd_EINTR          WSAEINTR
-#	define dnssd_ECONNRESET		WSAECONNRESET
+#   define dnssd_ECONNRESET     WSAECONNRESET
-#	define dnssd_sock_t			SOCKET
+#   define dnssd_socklen_t      int
-#	define dnssd_socklen_t		int
+#   define dnssd_close(sock)    closesocket(sock)
-#	define dnssd_close(sock)	closesocket(sock)
+#   define dnssd_errno          WSAGetLastError()
-#	define dnssd_errno			WSAGetLastError()
+#   define dnssd_strerror(X)    win32_strerror(X)
-#	define dnssd_strerror(X)	win32_strerror(X)
+#   define ssize_t              int
-#	define ssize_t				int
+#   define getpid               _getpid
-#	define getpid				_getpid
+#   define unlink               _unlink
-#	define unlink				_unlink
 extern char *win32_strerror(int inErrorCode);
 #else
-#	include <sys/types.h>
+#   include <sys/types.h>
-#	include <unistd.h>
+#   include <unistd.h>
-#	include <sys/un.h>
+#   include <sys/un.h>
-#	include <string.h>
+#   include <string.h>
-#	include <stdio.h>
+#   include <stdio.h>
-#	include <stdlib.h>
+#   include <stdlib.h>
-#	include <sys/stat.h>
+#   include <sys/stat.h>
-#	include <sys/socket.h>
+#   include <sys/socket.h>
-#	include <netinet/in.h>
+#   include <netinet/in.h>
-#	define dnssd_InvalidSocket	-1
+#   include <arpa/inet.h>
-#	define dnssd_SocketValid(s) ((s) >= 0)
+#   define dnssd_InvalidSocket  -1
-#	define dnssd_EWOULDBLOCK	EWOULDBLOCK
+#   define dnssd_SocketValid(s) ((s) >= 0)
-#	define dnssd_EINTR			EINTR
+#   define dnssd_EWOULDBLOCK    EWOULDBLOCK
-#	define dnssd_ECONNRESET		ECONNRESET
+#   define dnssd_EINTR          EINTR
-#	define dnssd_EPIPE			EPIPE
+#   define dnssd_ECONNRESET     ECONNRESET
-#	define dnssd_sock_t			int
+#   define dnssd_EPIPE          EPIPE
-#	define dnssd_socklen_t		unsigned int
+#   define dnssd_socklen_t      unsigned int
-#	define dnssd_close(sock)	close(sock)
+#   define dnssd_close(sock)    close(sock)
-#	define dnssd_errno			errno
+#   define dnssd_errno          errno
-#	define dnssd_strerror(X)	strerror(X)
+#   define dnssd_strerror(X)    strerror(X)
 #endif
 
 #if defined(USE_TCP_LOOPBACK)
-#	define AF_DNSSD				AF_INET
+#   define AF_DNSSD             AF_INET
-#	define MDNS_TCP_SERVERADDR	"127.0.0.1"
+#   define MDNS_TCP_SERVERADDR  "127.0.0.1"
-#	define MDNS_TCP_SERVERPORT	5354
+#   define MDNS_TCP_SERVERPORT  5354
-#	define LISTENQ				5
+#   define LISTENQ              5
-#	define dnssd_sockaddr_t		struct sockaddr_in
+#   define dnssd_sockaddr_t     struct sockaddr_in
 #else
-#	define AF_DNSSD				AF_LOCAL
+#   define AF_DNSSD             AF_LOCAL
-#	ifndef MDNS_UDS_SERVERPATH
+#   ifndef MDNS_UDS_SERVERPATH
-#		define MDNS_UDS_SERVERPATH	"/var/run/mDNSResponder"
+#       define MDNS_UDS_SERVERPATH  "/var/run/mDNSResponder"
-#	endif
+#   endif
-#	define LISTENQ				100
+#   define MDNS_UDS_SERVERPATH_ENVVAR "DNSSD_UDS_PATH"
-    // longest legal control path length
+#   define LISTENQ              100
-#	define MAX_CTLPATH			256
+// longest legal control path length
-#	define dnssd_sockaddr_t		struct sockaddr_un
+#   define MAX_CTLPATH          (sizeof(((struct sockaddr_un*)0)->sun_path))
+#   define dnssd_sockaddr_t     struct sockaddr_un
 #endif
 
 // Compatibility workaround
 #ifndef AF_LOCAL
-#define	AF_LOCAL	AF_UNIX
+#define AF_LOCAL    AF_UNIX
 #endif
 
 // General UDS constants
-#define TXT_RECORD_INDEX ((uint32_t)(-1))	// record index for default text record
+#define TXT_RECORD_INDEX ((uint32_t)(-1))   // record index for default text record
 
 // IPC data encoding constants and types
 #define VERSION 1
-#define IPC_FLAGS_NOREPLY 1	// set flag if no asynchronous replies are to be sent to client
+#define IPC_FLAGS_NOREPLY 1 // set flag if no asynchronous replies are to be sent to client
 
 // Structure packing macro. If we're not using GNUC, it's not fatal. Most compilers naturally pack the on-the-wire
 // structures correctly anyway, so a plain "struct" is usually fine. In the event that structures are not packed
@@ -116,10 +116,10 @@ extern char *win32_strerror(int inErrorCode);
 #endif
 
 typedef enum
-    {
+{
-    request_op_none = 0,	// No request yet received on this connection
+    request_op_none = 0,    // No request yet received on this connection
-    connection_request = 1,	// connected socket via DNSServiceConnect()
+    connection_request = 1, // connected socket via DNSServiceConnect()
-    reg_record_request,		// reg/remove record only valid for connected sockets
+    reg_record_request,     // reg/remove record only valid for connected sockets
     remove_record_request,
     enumeration_request,
     reg_service_request,
@@ -129,55 +129,58 @@ typedef enum
     reconfirm_record_request,
     add_record_request,
     update_record_request,
-    setdomain_request,		// Up to here is in Tiger and B4W 1.0.3
+    setdomain_request,      // Up to here is in Tiger and B4W 1.0.3
-	getproperty_request,	// New in B4W 1.0.4
+    getproperty_request,    // New in B4W 1.0.4
-    port_mapping_request,	// New in Leopard and B4W 2.0
+    port_mapping_request,   // New in Leopard and B4W 2.0
-	addrinfo_request,
+    addrinfo_request,
-	send_bpf,				// New in SL
+    send_bpf,               // New in SL
+    getpid_request,
+    release_request,
+    connection_delegate_request,
 
-	cancel_request = 63
+    cancel_request = 63
-    } request_op_t;
+} request_op_t;
 
 typedef enum
-    {
+{
     enumeration_reply_op = 64,
     reg_service_reply_op,
     browse_reply_op,
     resolve_reply_op,
     query_reply_op,
-    reg_record_reply_op,	// Up to here is in Tiger and B4W 1.0.3
+    reg_record_reply_op,    // Up to here is in Tiger and B4W 1.0.3
-    getproperty_reply_op,	// New in B4W 1.0.4
+    getproperty_reply_op,   // New in B4W 1.0.4
-    port_mapping_reply_op,	// New in Leopard and B4W 2.0
+    port_mapping_reply_op,  // New in Leopard and B4W 2.0
-	addrinfo_reply_op
+    addrinfo_reply_op
-    } reply_op_t;
+} reply_op_t;
 
 #if defined(_WIN64)
-#	pragma pack(push,4)
+#   pragma pack(push,4)
 #endif
 
 // Define context object big enough to hold a 64-bit pointer,
 // to accomodate 64-bit clients communicating with 32-bit daemon.
 // There's no reason for the daemon to ever be a 64-bit process, but its clients might be
 typedef packedunion
-    {
+{
     void *context;
     uint32_t u32[2];
-    } client_context_t;
+} client_context_t;
 
 typedef packedstruct
-    {
+{
     uint32_t version;
     uint32_t datalen;
     uint32_t ipc_flags;
-    uint32_t op;		// request_op_t or reply_op_t
+    uint32_t op;        // request_op_t or reply_op_t
     client_context_t client_context; // context passed from client, returned by server in corresponding reply
     uint32_t reg_index;            // identifier for a record registered via DNSServiceRegisterRecord() on a
     // socket connected by DNSServiceCreateConnection().  Must be unique in the scope of the connection, such that and
     // index/socket pair uniquely identifies a record.  (Used to select records for removal by DNSServiceRemoveRecord())
-    } ipc_msg_hdr;
+} ipc_msg_hdr;
 
 #if defined(_WIN64)
-#	pragma pack(pop)
+#   pragma pack(pop)
 #endif
 
 // routines to write to and extract data from message buffers.
@@ -202,16 +205,16 @@ int get_string(const char **ptr, const char *const end, char *buffer, int buflen
 
 void put_rdata(const int rdlen, const unsigned char *rdata, char **ptr);
 const char *get_rdata(const char **ptr, const char *end, int rdlen);  // return value is rdata pointed to by *ptr -
-                                         // rdata is not copied from buffer.
+// rdata is not copied from buffer.
 
 void ConvertHeaderBytes(ipc_msg_hdr *hdr);
 
 struct CompileTimeAssertionChecks_dnssd_ipc
-	{
+{
-	// Check that the compiler generated our on-the-wire packet format structure definitions
+    // Check that the compiler generated our on-the-wire packet format structure definitions
-	// properly packed, without adding padding bytes to align fields on 32-bit or 64-bit boundaries.
+    // properly packed, without adding padding bytes to align fields on 32-bit or 64-bit boundaries.
-	char assert0[(sizeof(client_context_t) ==  8) ? 1 : -1];
+    char assert0[(sizeof(client_context_t) ==  8) ? 1 : -1];
-	char assert1[(sizeof(ipc_msg_hdr)      == 28) ? 1 : -1];
+    char assert1[(sizeof(ipc_msg_hdr)      == 28) ? 1 : -1];
-	};
+};
 
 #endif // DNSSD_IPC_H