interface-file: use bsearch to find parser functions
This commit is contained in:
Ariadne Conill
parent
4a11d4fdd8
commit
aba140a977
1 changed files with 170 additions and 122 deletions
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@ -74,6 +74,25 @@ report_error(const char *filename, size_t lineno, const char *errfmt, ...)
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fprintf(stderr, "%s:%zu: %s\n", filename, lineno, errbuf);
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}
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static bool
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handle_address(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp)
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{
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(void) collection;
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(void) token;
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char *addr = lif_next_token(&bufp);
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if (cur_iface == NULL)
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{
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report_error(filename, lineno, "%s '%s' without interface", token, addr);
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return false;
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}
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lif_interface_address_add(cur_iface, addr);
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return true;
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}
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static bool
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handle_auto(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp)
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{
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@ -95,6 +114,127 @@ handle_auto(struct lif_dict *collection, const char *filename, size_t lineno, ch
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return true;
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}
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static bool
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handle_gateway(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp)
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{
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(void) collection;
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(void) token;
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char *addr = lif_next_token(&bufp);
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if (cur_iface == NULL)
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{
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report_error(filename, lineno, "%s '%s' without interface", token, addr);
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return false;
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}
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lif_interface_use_executor(cur_iface, "static");
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lif_dict_add(&cur_iface->vars, token, strdup(addr));
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return true;
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}
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static bool
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handle_generic(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp)
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{
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(void) collection;
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(void) filename;
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(void) lineno;
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if (cur_iface == NULL)
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return true;
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token = maybe_remap_token(token);
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lif_dict_add(&cur_iface->vars, token, strdup(bufp));
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/* Check if token looks like <word1>-<word*> and assume <word1> is an addon */
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char *word_end = strchr(token, '-');
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if (word_end != NULL)
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{
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/* Copy word1 to not mangle *token */
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char *addon = strndup(token, word_end - token);
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lif_interface_use_executor(cur_iface, addon);
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free(addon);
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/* pass requires as compatibility env vars to appropriate executors (bridge, bond) */
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if (!strcmp(addon, "bridge"))
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cur_iface->is_bridge = true;
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else if (!strcmp(addon, "bond"))
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cur_iface->is_bond = true;
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}
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return true;
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}
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static bool handle_inherit(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp);
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static bool
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handle_iface(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp)
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{
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char *ifname = lif_next_token(&bufp);
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if (!*ifname)
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{
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report_error(filename, lineno, "%s without any other tokens", token);
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return false;
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}
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cur_iface = lif_interface_collection_find(collection, ifname);
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if (cur_iface == NULL)
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{
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report_error(filename, lineno, "could not upsert interface %s", ifname);
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return false;
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}
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/* in original ifupdown config, we can have "inet loopback"
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* or "inet dhcp" or such to designate hints. lets pick up
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* those hints here.
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*/
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token = lif_next_token(&bufp);
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while (*token)
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{
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if (!strcmp(token, "dhcp"))
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lif_interface_use_executor(cur_iface, "dhcp");
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else if (!strcmp(token, "ppp"))
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lif_interface_use_executor(cur_iface, "ppp");
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else if (!strcmp(token, "inherits"))
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{
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if (!handle_inherit(collection, filename, lineno, token, bufp))
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return false;
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}
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token = lif_next_token(&bufp);
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}
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return true;
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}
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static bool
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handle_inherit(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp)
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{
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char *target = lif_next_token(&bufp);
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if (cur_iface == NULL)
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{
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report_error(filename, lineno, "%s '%s' without interface", token, target);
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return false;
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}
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if (!*target)
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{
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report_error(filename, lineno, "%s: unspecified interface");
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return false;
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}
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if (!lif_interface_collection_inherit(cur_iface, collection, target))
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{
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report_error(filename, lineno, "could not inherit %s", target);
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return false;
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}
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return true;
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}
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static bool
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handle_source(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp)
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{
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@ -117,6 +257,29 @@ handle_source(struct lif_dict *collection, const char *filename, size_t lineno,
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return lif_interface_file_parse(collection, source_filename);
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}
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static bool
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handle_use(struct lif_dict *collection, const char *filename, size_t lineno, char *token, char *bufp)
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{
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(void) collection;
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char *executor = lif_next_token(&bufp);
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if (cur_iface == NULL)
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{
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report_error(filename, lineno, "%s '%s' without interface", token, executor);
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return false;
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}
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/* pass requires as compatibility env vars to appropriate executors (bridge, bond) */
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if (!strcmp(executor, "bridge"))
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cur_iface->is_bridge = true;
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else if (!strcmp(executor, "bond"))
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cur_iface->is_bond = true;
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lif_interface_use_executor(cur_iface, executor);
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return true;
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}
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/* map keywords to parser functions */
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struct parser_keyword {
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const char *token;
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@ -124,8 +287,13 @@ struct parser_keyword {
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};
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static const struct parser_keyword keywords[] = {
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{"address", handle_address},
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{"auto", handle_auto},
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{"gateway", handle_gateway},
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{"iface", handle_iface},
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{"inherit", handle_inherit},
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{"source", handle_source},
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{"use", handle_use},
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};
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static int
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@ -164,128 +332,8 @@ lif_interface_file_parse(struct lif_dict *collection, const char *filename)
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if (!parserkw->handle(collection, filename, lineno, token, bufp))
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goto parse_error;
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}
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else if (!strcmp(token, "iface"))
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{
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char *ifname = lif_next_token(&bufp);
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if (!*ifname)
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else if (!handle_generic(collection, filename, lineno, token, bufp))
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goto parse_error;
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cur_iface = lif_interface_collection_find(collection, ifname);
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if (cur_iface == NULL)
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goto parse_error;
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/* in original ifupdown config, we can have "inet loopback"
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* or "inet dhcp" or such to designate hints. lets pick up
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* those hints here.
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*/
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char *token = lif_next_token(&bufp);
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while (*token)
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{
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if (!strcmp(token, "dhcp"))
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lif_interface_use_executor(cur_iface, "dhcp");
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else if (!strcmp(token, "ppp"))
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lif_interface_use_executor(cur_iface, "ppp");
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else if (!strcmp(token, "inherits"))
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{
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token = lif_next_token(&bufp);
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if (!*token)
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{
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report_error(filename, lineno, "inherits without interface");
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goto parse_error;
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}
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if (!lif_interface_collection_inherit(cur_iface, collection, token))
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{
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report_error(filename, lineno, "could not inherit %s", token);
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goto parse_error;
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}
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}
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token = lif_next_token(&bufp);
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}
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}
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else if (!strcmp(token, "use"))
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{
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char *executor = lif_next_token(&bufp);
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if (cur_iface == NULL)
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{
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report_error(filename, lineno, "use '%s' without interface", executor);
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goto parse_error;
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}
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/* pass requires as compatibility env vars to appropriate executors (bridge, bond) */
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if (!strcmp(executor, "bridge"))
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cur_iface->is_bridge = true;
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else if (!strcmp(executor, "bond"))
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cur_iface->is_bond = true;
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lif_interface_use_executor(cur_iface, executor);
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}
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else if (!strcmp(token, "inherit"))
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{
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token = lif_next_token(&bufp);
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if (!*token)
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{
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report_error(filename, lineno, "inherits without interface");
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goto parse_error;
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}
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if (!lif_interface_collection_inherit(cur_iface, collection, token))
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{
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report_error(filename, lineno, "could not inherit %s", token);
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goto parse_error;
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}
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}
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else if (!strcmp(token, "address"))
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{
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char *addr = lif_next_token(&bufp);
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if (cur_iface == NULL)
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{
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report_error(filename, lineno, "%s: address '%s' without interface", filename, addr);
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goto parse_error;
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}
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lif_interface_address_add(cur_iface, addr);
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}
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else if (!strcmp(token, "gateway"))
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{
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char *addr = lif_next_token(&bufp);
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if (cur_iface == NULL)
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{
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report_error(filename, lineno, "%s: gateway '%s' without interface", filename, addr);
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goto parse_error;
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}
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lif_interface_use_executor(cur_iface, "static");
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lif_dict_add(&cur_iface->vars, token, strdup(addr));
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}
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else if (cur_iface != NULL)
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{
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token = maybe_remap_token(token);
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lif_dict_add(&cur_iface->vars, token, strdup(bufp));
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/* Check if token looks like <word1>-<word*> and assume <word1> is an addon */
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char *word_end = strchr(token, '-');
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if (word_end != NULL)
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{
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/* Copy word1 to not mangle *token */
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char *addon = strndup(token, word_end - token);
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lif_interface_use_executor(cur_iface, addon);
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free(addon);
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/* pass requires as compatibility env vars to appropriate executors (bridge, bond) */
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if (!strcmp(addon, "bridge"))
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cur_iface->is_bridge = true;
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else if (!strcmp(addon, "bond"))
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cur_iface->is_bond = true;
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}
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}
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}
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fclose(f);
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