Full implementation for OSX ready

Signed-off-by: avaid96 <avaid1996@gmail.com>

osxkeychain/osxkeychain_darwin.c

@@ -1,4 +1,7 @@
 #include "osxkeychain_darwin.h"
+#include <CoreFoundation/CoreFoundation.h>
+#include <stdio.h>
+#include <string.h>
 
 char *get_error(OSStatus status) {
   char *buf = malloc(128);
@@ -96,3 +99,77 @@ char *keychain_delete(struct Server *server) {
   }
   return NULL;
 }
+
+char * CFStringToCharArr(CFStringRef aString) {
+  if (aString == NULL) {
+    return NULL;
+  }
+  CFIndex length = CFStringGetLength(aString);
+  CFIndex maxSize =
+  CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8) + 1;
+  char *buffer = (char *)malloc(maxSize);
+  if (CFStringGetCString(aString, buffer, maxSize,
+                         kCFStringEncodingUTF8)) {
+    return buffer;
+  }
+  return NULL;
+}
+
+char *keychain_list(char *** paths, char *** accts, unsigned int *list_l) {
+    CFMutableDictionaryRef query = CFDictionaryCreateMutable (NULL, 1, NULL, NULL);
+    CFDictionaryAddValue(query, kSecClass, kSecClassInternetPassword);
+    CFDictionaryAddValue(query, kSecReturnAttributes, kCFBooleanTrue);
+    CFDictionaryAddValue(query, kSecMatchLimit, kSecMatchLimitAll);
+    //Use this query dictionary
+    CFTypeRef result= NULL;
+    OSStatus status = SecItemCopyMatching(
+    query,
+    &result);
+    //Ran a search and store the results in result
+    if (status) {
+        return get_error(status);
+    }
+    int numKeys = CFArrayGetCount(result);
+    *paths = (char **) malloc((int)sizeof(char *)*numKeys);
+    *accts = (char **) malloc((int)sizeof(char *)*numKeys);
+    //result is of type CFArray
+    for(int i=0; i<numKeys; i++) {
+        CFDictionaryRef currKey = CFArrayGetValueAtIndex(result,i);
+        if (CFDictionaryContainsKey(currKey, CFSTR("path"))) {
+            //Even if a key is stored without an account, Apple defaults it to null so these arrays will be of the same length
+            CFStringRef pathTmp = CFDictionaryGetValue(currKey, CFSTR("path"));
+            CFStringRef acctTmp = CFDictionaryGetValue(currKey, CFSTR("acct"));
+            if (acctTmp == NULL) {
+                acctTmp = CFSTR("<unknown>");
+            }
+            char * path = (char *) malloc(CFStringGetLength(pathTmp)+1);
+            path = CFStringToCharArr(pathTmp);
+            path[strlen(path)] = '\0';
+            char * acct = (char *) malloc(CFStringGetLength(acctTmp)+1); //<- problem line in 38th iteration
+            acct = CFStringToCharArr(acctTmp);
+            acct[strlen(acct)] = '\0';
+            //We now have all we need, username and servername. Now export this to .go
+            (*paths)[i] = (char *) malloc(sizeof(char)*(strlen(path)+1));
+            memcpy((*paths)[i], path, sizeof(char)*(strlen(path)+1));
+            (*accts)[i] = (char *) malloc(sizeof(char)*(strlen(acct)+1));
+            memcpy((*accts)[i], acct, sizeof(char)*(strlen(acct)+1));
+        }
+        else {
+            char * path = "0";
+            char * acct = "0";
+            (*paths)[i] = (char *) malloc(sizeof(char)*(strlen(path)));
+            memcpy((*paths)[i], path, sizeof(char)*(strlen(path)));
+            (*accts)[i] = (char *) malloc(sizeof(char)*(strlen(acct)));
+            memcpy((*accts)[i], acct, sizeof(char)*(strlen(acct)));
+        }
+    }
+    *list_l = numKeys;
+    return NULL;
+}
+
+void freeListData(char *** data, unsigned int length) {
+     for(int i=0; i<length; i++) {
+        free((*data)[i]);
+     }
+     free(*data);
+}