* Parse and verify a string of the form: * * Such a string can refer to a specific node or a specific hook * on a specific node, depending on how you look at it. In the * latter case, the PATH component must not end in a dot. * * Both and are optional. The is a string * of hook names separated by dots. This breaks out the original * string, setting *nod
| 1658 | * This returns -1 if the path is malformed. The char ** are optional. |
| 1659 | ***********************************************************************/ |
| 1660 | int |
| 1661 | ng_path_parse(char *addr, char **nodep, char **pathp, char **hookp) |
| 1662 | { |
| 1663 | char *node, *path, *hook; |
| 1664 | int k; |
| 1665 | |
| 1666 | /* |
| 1667 | * Extract absolute NODE, if any |
| 1668 | */ |
| 1669 | for (path = addr; *path && *path != ':'; path++); |
| 1670 | if (*path) { |
| 1671 | node = addr; /* Here's the NODE */ |
| 1672 | *path++ = '\0'; /* Here's the PATH */ |
| 1673 | |
| 1674 | /* Node name must not be empty */ |
| 1675 | if (!*node) |
| 1676 | return -1; |
| 1677 | |
| 1678 | /* A name of "." is OK; otherwise '.' not allowed */ |
| 1679 | if (strcmp(node, ".") != 0) { |
| 1680 | for (k = 0; node[k]; k++) |
| 1681 | if (node[k] == '.') |
| 1682 | return -1; |
| 1683 | } |
| 1684 | } else { |
| 1685 | node = NULL; /* No absolute NODE */ |
| 1686 | path = addr; /* Here's the PATH */ |
| 1687 | } |
| 1688 | |
| 1689 | /* Snoop for illegal characters in PATH */ |
| 1690 | for (k = 0; path[k]; k++) |
| 1691 | if (path[k] == ':') |
| 1692 | return -1; |
| 1693 | |
| 1694 | /* Check for no repeated dots in PATH */ |
| 1695 | for (k = 0; path[k]; k++) |
| 1696 | if (path[k] == '.' && path[k + 1] == '.') |
| 1697 | return -1; |
| 1698 | |
| 1699 | /* Remove extra (degenerate) dots from beginning or end of PATH */ |
| 1700 | if (path[0] == '.') |
| 1701 | path++; |
| 1702 | if (*path && path[strlen(path) - 1] == '.') |
| 1703 | path[strlen(path) - 1] = 0; |
| 1704 | |
| 1705 | /* If PATH has a dot, then we're not talking about a hook */ |
| 1706 | if (*path) { |
| 1707 | for (hook = path, k = 0; path[k]; k++) |
| 1708 | if (path[k] == '.') { |
| 1709 | hook = NULL; |
| 1710 | break; |
| 1711 | } |
| 1712 | } else |
| 1713 | path = hook = NULL; |
| 1714 | |
| 1715 | /* Done */ |
| 1716 | if (nodep) |
| 1717 | *nodep = node; |
no test coverage detected