/usr/share/gocode/src/github.com/google/cups-connector/privet/bonjour.c is in google-cloud-print-connector 0.0~git20151105.24.1902938-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | // Copyright 2015 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
// +build darwin
#include "bonjour.h"
#include "_cgo_export.h"
// streamErrorToString converts a CFStreamError to a string.
char *streamErrorToString(CFStreamError *error) {
const char *errorDomain;
switch (error->domain) {
case kCFStreamErrorDomainCustom:
errorDomain = "custom";
break;
case kCFStreamErrorDomainPOSIX:
errorDomain = "POSIX";
break;
case kCFStreamErrorDomainMacOSStatus:
errorDomain = "MacOS status";
break;
default:
errorDomain = "unknown";
break;
}
char *err = NULL;
asprintf(&err, "domain %s code %d", errorDomain, error->error);
return err;
}
void registerCallback(CFNetServiceRef service, CFStreamError *streamError, void *info) {
CFStringRef printerName = (CFStringRef)info;
char *printerNameC = malloc(sizeof(char) * (CFStringGetLength(printerName) + 1));
char *streamErrorC = streamErrorToString(streamError);
char *error = NULL;
asprintf(&error, "Error while announcing Bonjour service for printer %s: %s",
printerNameC, streamErrorC);
logBonjourError(error);
CFRelease(printerName);
free(printerNameC);
free(streamErrorC);
free(error);
}
// startBonjour starts and returns a bonjour service.
//
// Returns a registered service. Returns NULL and sets err on failure.
CFNetServiceRef startBonjour(const char *name, const char *type, unsigned short int port, const char *ty, const char *url, const char *id, const char *cs, char **err) {
CFStringRef nameCF = CFStringCreateWithCString(NULL, name, kCFStringEncodingASCII);
CFStringRef typeCF = CFStringCreateWithCString(NULL, type, kCFStringEncodingASCII);
CFStringRef tyCF = CFStringCreateWithCString(NULL, ty, kCFStringEncodingASCII);
CFStringRef urlCF = CFStringCreateWithCString(NULL, url, kCFStringEncodingASCII);
CFStringRef idCF = CFStringCreateWithCString(NULL, id, kCFStringEncodingASCII);
CFStringRef csCF = CFStringCreateWithCString(NULL, cs, kCFStringEncodingASCII);
CFMutableDictionaryRef dict = CFDictionaryCreateMutable(NULL, 0,
&kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(dict, CFSTR("txtvers"), CFSTR("1"));
CFDictionarySetValue(dict, CFSTR("ty"), tyCF);
CFDictionarySetValue(dict, CFSTR("url"), urlCF);
CFDictionarySetValue(dict, CFSTR("type"), CFSTR("printer"));
CFDictionarySetValue(dict, CFSTR("id"), idCF);
CFDictionarySetValue(dict, CFSTR("cs"), csCF);
CFDataRef txt = CFNetServiceCreateTXTDataWithDictionary(NULL, dict);
CFNetServiceRef service = CFNetServiceCreate(NULL, CFSTR("local"), typeCF, nameCF, port);
CFNetServiceSetTXTData(service, txt);
// context now owns n, and will release n when service is released.
CFNetServiceClientContext context = {0, (void *) nameCF, NULL, CFRelease, NULL};
CFNetServiceSetClient(service, registerCallback, &context);
CFNetServiceScheduleWithRunLoop(service, CFRunLoopGetCurrent(), kCFRunLoopCommonModes);
CFOptionFlags options = kCFNetServiceFlagNoAutoRename;
CFStreamError error;
if (!CFNetServiceRegisterWithOptions(service, options, &error)) {
char *errorString = streamErrorToString(&error);
asprintf(err, "Failed to register Bonjour service: %s", errorString);
free(errorString);
CFRelease(service);
service = NULL;
}
CFRelease(typeCF);
CFRelease(tyCF);
CFRelease(urlCF);
CFRelease(idCF);
CFRelease(csCF);
CFRelease(dict);
CFRelease(txt);
return service;
}
// updateBonjour updates the TXT record of service.
void updateBonjour(CFNetServiceRef service, const char *ty, const char *url, const char *id, const char *cs) {
CFStringRef tyCF = CFStringCreateWithCString(NULL, ty, kCFStringEncodingASCII);
CFStringRef urlCF = CFStringCreateWithCString(NULL, url, kCFStringEncodingASCII);
CFStringRef idCF = CFStringCreateWithCString(NULL, id, kCFStringEncodingASCII);
CFStringRef csCF = CFStringCreateWithCString(NULL, cs, kCFStringEncodingASCII);
CFMutableDictionaryRef dict = CFDictionaryCreateMutable(NULL, 0,
&kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(dict, CFSTR("txtvers"), CFSTR("1"));
CFDictionarySetValue(dict, CFSTR("ty"), tyCF);
CFDictionarySetValue(dict, CFSTR("url"), urlCF);
CFDictionarySetValue(dict, CFSTR("type"), CFSTR("printer"));
CFDictionarySetValue(dict, CFSTR("id"), idCF);
CFDictionarySetValue(dict, CFSTR("cs"), csCF);
CFDataRef txt = CFNetServiceCreateTXTDataWithDictionary(NULL, dict);
CFNetServiceSetTXTData(service, txt);
CFRelease(tyCF);
CFRelease(urlCF);
CFRelease(idCF);
CFRelease(csCF);
CFRelease(dict);
CFRelease(txt);
}
// stopBonjour stops service and frees associated resources.
void stopBonjour(CFNetServiceRef service) {
CFNetServiceUnscheduleFromRunLoop(service, CFRunLoopGetCurrent(), kCFRunLoopCommonModes);
CFNetServiceSetClient(service, NULL, NULL);
CFNetServiceCancel(service);
CFRelease(service);
}
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