overby.me
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1#include <unistd.h>
2#include <sys/types.h>
3#include <stdlib.h>
4#include <pwd.h>
5#include <sys/utsname.h>
6//#include "log.h"
7
8#include <CoreFoundation/CFString.h>
9#include <SystemConfiguration/SCDynamicStoreCopySpecific.h>
10#include <SystemConfiguration/SCSchemaDefinitions.h>
11#include <vector>
12
13#define MAX_PASSENTRY_LENGTH 4096
14
15
16
17CFStringRef SCDynamicStoreCopyComputerName (SCDynamicStoreRef store, CFStringEncoding *nameEncoding)
18{
19 char hostname[100];
20 if (gethostname(hostname, sizeof(hostname)) != 0)
21 return nullptr;
22 hostname[sizeof(hostname)-1] = '\0';
23
24 if (nameEncoding)
25 *nameEncoding = kCFStringEncodingUTF8;
26
27 return CFStringCreateWithCString(nullptr, hostname, kCFStringEncodingUTF8);
28}
29
30CFStringRef SCDynamicStoreCopyConsoleUser (SCDynamicStoreRef store, uid_t *uid, gid_t *gid){
31 struct passwd pwent, *pwentp;
32 char buffer[MAX_PASSENTRY_LENGTH];
33 char *user;
34
35 if (uid) *uid = getuid();
36 if (gid) *gid = getgid();
37
38 user = getenv("USER");
39 if (user)
40 return CFStringCreateWithCString(NULL, user, kCFStringEncodingUTF8);
41
42 if (getpwuid_r(getuid(), &pwent, buffer, MAX_PASSENTRY_LENGTH, &pwentp))
43 return CFStringCreateWithCString(NULL, pwentp->pw_name, kCFStringEncodingUTF8);
44
45 return NULL;
46}
47
48CFStringRef SCDynamicStoreCopyLocalHostName (SCDynamicStoreRef store){
49 struct utsname info;
50
51 if (uname(&info) != 0)
52 return NULL;
53
54 return CFStringCreateWithCString(NULL, info.nodename, kCFStringEncodingUTF8);
55}
56
57CFStringRef SCDynamicStoreCopyLocation (SCDynamicStoreRef store){
58 //LOG << "fixme: SCDynamicStoreCopyLocation() - stub" << std::endl;
59 return NULL;
60}
61
62static CFNumberRef cfNumber(int n)
63{
64 return CFNumberCreate(nullptr, kCFNumberSInt32Type, &n);
65}
66
67static void fillProxy(std::vector<CFStringRef>& keys, std::vector<CFTypeRef>& values,
68 const char* envVarName,
69 CFStringRef enabledKey, CFStringRef hostKey, CFStringRef portKey)
70{
71 const char* var = getenv(envVarName);
72 if (!var)
73 {
74 keys.push_back(enabledKey);
75 values.push_back(cfNumber(0));
76 }
77 else
78 {
79 keys.push_back(enabledKey);
80 values.push_back(cfNumber(1));
81
82 CFURLRef url = CFURLCreateWithBytes(nullptr, (const UInt8*) var, strlen(var), kCFStringEncodingUTF8, nullptr);
83
84 if (url != nullptr)
85 {
86 keys.push_back(hostKey);
87 values.push_back(CFURLCopyHostName(url));
88
89 int port = CFURLGetPortNumber(url);
90 if (port == -1)
91 port = 80;
92
93 keys.push_back(portKey);
94 values.push_back(cfNumber(port));
95
96 CFRelease(url);
97 }
98 }
99}
100
101CFDictionaryRef SCDynamicStoreCopyProxies (SCDynamicStoreRef store)
102{
103 // NOTE: Proxy username and password are supposed to be accessed via Security.framework
104 // https://stackoverflow.com/a/15085066/479753
105
106 std::vector<CFStringRef> keys;
107 std::vector<CFTypeRef> values;
108
109 keys.push_back(kSCPropNetProxiesGopherEnable);
110 values.push_back(cfNumber(0));
111
112 fillProxy(keys, values, "http_proxy", kSCPropNetProxiesHTTPEnable, kSCPropNetProxiesHTTPProxy, kSCPropNetProxiesHTTPPort);
113 fillProxy(keys, values, "https_proxy", kSCPropNetProxiesHTTPSEnable, kSCPropNetProxiesHTTPSProxy, kSCPropNetProxiesHTTPSPort);
114 fillProxy(keys, values, "ftp_proxy", kSCPropNetProxiesFTPEnable, kSCPropNetProxiesFTPProxy, kSCPropNetProxiesFTPPort);
115
116 CFDictionaryRef rv = CFDictionaryCreate(nullptr, (const void**) keys.data(), (const void**) values.data(), keys.size(),
117 &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
118
119 for (CFTypeRef cf : values)
120 CFRelease(cf);
121 return rv;
122}
123
124CFDictionaryRef SCDynamicStoreCopyProxiesWithOptions(SCDynamicStoreRef store, CFDictionaryRef options)
125{
126 return SCDynamicStoreCopyProxies(store);
127}