+ if (!setup_file_list)
+ return;
+
+ if (setup_file_list->token)
+ free(setup_file_list->token);
+ if (setup_file_list->value)
+ free(setup_file_list->value);
+ if (setup_file_list->next)
+ freeSetupFileList(setup_file_list->next);
+ free(setup_file_list);
+}
+
+static struct SetupFileList *newSetupFileList(char *token, char *value)
+{
+ struct SetupFileList *new = checked_malloc(sizeof(struct SetupFileList));
+
+ new->token = checked_malloc(strlen(token) + 1);
+ strcpy(new->token, token);
+
+ new->value = checked_malloc(strlen(value) + 1);
+ strcpy(new->value, value);
+
+ new->next = NULL;
+
+ return new;
+}
+
+char *getTokenValue(struct SetupFileList *setup_file_list, char *token)
+{
+ if (!setup_file_list)
+ return NULL;
+
+ if (strcmp(setup_file_list->token, token) == 0)
+ return setup_file_list->value;
+ else
+ return getTokenValue(setup_file_list->next, token);
+}
+
+static void setTokenValue(struct SetupFileList *setup_file_list,
+ char *token, char *value)
+{
+ if (!setup_file_list)
+ return;
+
+ if (strcmp(setup_file_list->token, token) == 0)
+ {
+ free(setup_file_list->value);
+ setup_file_list->value = checked_malloc(strlen(value) + 1);
+ strcpy(setup_file_list->value, value);
+ }
+ else if (setup_file_list->next == NULL)
+ setup_file_list->next = newSetupFileList(token, value);
+ else
+ setTokenValue(setup_file_list->next, token, value);
+}
+
+#ifdef DEBUG
+static void printSetupFileList(struct SetupFileList *setup_file_list)
+{
+ if (!setup_file_list)
+ return;
+
+ printf("token: '%s'\n", setup_file_list->token);
+ printf("value: '%s'\n", setup_file_list->value);
+
+ printSetupFileList(setup_file_list->next);
+}
+#endif
+
+struct SetupFileList *loadSetupFileList(char *filename)
+{
+ int line_len;
+ char line[MAX_LINE_LEN];
+ char *token, *value, *line_ptr;
+ struct SetupFileList *setup_file_list = newSetupFileList("", "");
+ struct SetupFileList *first_valid_list_entry;
+
+ FILE *file;
+
+ if (!(file = fopen(filename, MODE_READ)))
+ {
+ Error(ERR_WARN, "cannot open configuration file '%s'", filename);
+ return NULL;
+ }
+
+ while(!feof(file))
+ {
+ /* read next line of input file */
+ if (!fgets(line, MAX_LINE_LEN, file))
+ break;
+
+ /* cut trailing comment or whitespace from input line */
+ for (line_ptr = line; *line_ptr; line_ptr++)
+ {
+ if (*line_ptr == '#' || *line_ptr == '\n' || *line_ptr == '\r')
+ {
+ *line_ptr = '\0';
+ break;
+ }
+ }
+
+ /* cut trailing whitespaces from input line */
+ for (line_ptr = &line[strlen(line)]; line_ptr > line; line_ptr--)
+ if ((*line_ptr == ' ' || *line_ptr == '\t') && line_ptr[1] == '\0')
+ *line_ptr = '\0';
+
+ /* ignore empty lines */
+ if (*line == '\0')
+ continue;
+
+ line_len = strlen(line);
+
+ /* cut leading whitespaces from token */
+ for (token = line; *token; token++)
+ if (*token != ' ' && *token != '\t')
+ break;
+
+ /* find end of token */
+ for (line_ptr = token; *line_ptr; line_ptr++)
+ {
+ if (*line_ptr == ' ' || *line_ptr == '\t' || *line_ptr == ':')
+ {
+ *line_ptr = '\0';
+ break;
+ }
+ }
+
+ if (line_ptr < line + line_len)
+ value = line_ptr + 1;
+ else
+ value = "\0";
+
+ /* cut leading whitespaces from value */
+ for (; *value; value++)
+ if (*value != ' ' && *value != '\t')
+ break;
+
+ if (*token && *value)
+ setTokenValue(setup_file_list, token, value);
+ }
+
+ fclose(file);
+
+ first_valid_list_entry = setup_file_list->next;
+
+ /* free empty list header */
+ setup_file_list->next = NULL;
+ freeSetupFileList(setup_file_list);
+
+ if (first_valid_list_entry == NULL)
+ Error(ERR_WARN, "configuration file '%s' is empty", filename);
+
+ return first_valid_list_entry;
+}
+
+void checkSetupFileListIdentifier(struct SetupFileList *setup_file_list,
+ char *identifier)
+{
+ if (!setup_file_list)
+ return;
+
+ if (strcmp(setup_file_list->token, TOKEN_STR_FILE_IDENTIFIER) == 0)
+ {
+ if (strcmp(setup_file_list->value, identifier) != 0)
+ {
+ Error(ERR_WARN, "configuration file has wrong version");
+ return;
+ }
+ else
+ return;
+ }
+
+ if (setup_file_list->next)
+ checkSetupFileListIdentifier(setup_file_list->next, identifier);
+ else
+ {
+ Error(ERR_WARN, "configuration file has no version information");
+ return;
+ }