Changeset 7369

Timestamp:

02/19/07 20:39:57 (23 months ago)

Author:

BradNeuberg

Message:

Implementing C-based offline cache

Files:

• trunk/dot/proxy/off.c (modified) (10 diffs)

trunk/dot/proxy/off.c

@@ -69 +69 @@
 
 int addOfflineHost(char host[]){
-        return 0;
+        struct offline_list_entry *entry_ptr;
+        
+        if(isHostAvailableOffline(host) == 1){
+                /* already registered to be available offline */
+                return 1; /* success */
+        }
+        
+        /* instantiate an entry for this host */
+        entry_ptr = (struct offline_list_entry *)
+                                        malloc(sizeof(struct offline_list_entry));
+        if(entry_ptr == NULL){
+                do_log(L_ERROR, "No memory");
+                return 0;
+        }
+        entry_ptr->host_ptr = (char *)malloc((unsigned) (strlen(host) + 1));
+        if(entry_ptr->host_ptr == NULL){
+                do_log(L_ERROR, "No memory");
+                return 0;
+        }
+        memcpy(entry_ptr->host_ptr, host, strlen(host) + 1);
+        entry_ptr->next_ptr = NULL;
+        
+        /* add it in the right place */
+        if(offline_list_ptr == NULL){
+                offline_list_ptr = entry_ptr;
+        }else{
+                /* shuffle along the list until we get to the end */
+                entry_ptr = offline_list_ptr;
+                while(entry_ptr->next_ptr != NULL){
+                        entry_ptr = entry_ptr->next_ptr;
+                }
+                entry_ptr->next_ptr = entry_ptr;
+        }
 }
 
@@ -77 +109 @@
 
 int isHostAvailableOffline(char host[]){
+        struct offline_list_entry *entry_ptr;
+        
+        if(host == NULL){
+                return 0; /* not available offline */
+        }
+        
+        entry_ptr = offline_list_ptr;
+        while(entry_ptr != NULL){
+                if(strcmp(entry_ptr->host_ptr, host) == 0){
+                        return 1; /* the host is available offline */
+                }
+                
+                entry_ptr = entry_ptr->next_ptr;
+        }
+        
+        /* host not available offlne */
         return 0;
 }
@@ -93 +141 @@
                                 offlineFile->string);
                 do_log(L_ERROR, message);
-                return 0;
+                return 0; /* failure */
     }
 
@@ -101 +149 @@
                 sprintf(message, "Unable to open offline list file, errno: %d", errno);
                 do_log(L_ERROR, message);
-                return 0;
+                return 0; /* failure */
         }
 
@@ -116 +164 @@
         fclose(file_ptr);
         
-        return 1;
+        return 1; /* success */
 }
 
@@ -136 +184 @@
                                 offlineFile->string);
                 do_log(L_INFO, message);
-                return 1;
+                return 1; /* success */
         }
         
@@ -144 +192 @@
                                 offlineFile->string);
                 do_log(L_ERROR, message);
-                return 0;
+                return 0; /* failure */
     }
 
@@ -152 +200 @@
                 sprintf(message, "Unable to open offline list file, errno: %d", errno);
                 do_log(L_ERROR, message);
-                return 0;
+                return 0; /* failure */
         }
         
@@ -175 +223 @@
                 new_entry_ptr = (struct offline_list_entry *)
                                                 malloc(sizeof(struct offline_list_entry));
+                if(new_entry_ptr == NULL){
+                        do_log(L_ERROR, "No memory");
+                        return 0; /* failure */
+                }
                 new_entry_ptr->host_ptr = (char *)malloc((unsigned) (strlen(line) + 1));
+                if(new_entry_ptr->host_ptr == NULL){
+                        do_log(L_ERROR, "No memory");
+                        return 0; /* failure */
+                }
                 memcpy(new_entry_ptr->host_ptr, line, strlen(line) + 1);
                 new_entry_ptr->next_ptr = NULL;
@@ -193 +249 @@
         fclose(file_ptr);
         
-        return 1;
+        return 1; /* success */
 }