forked from Mirror/frr
lib: Add matching and argv support
Queries may be run against DFA's to find matching cmd_element, and argument lists may be constructed. Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
This commit is contained in:
parent
a53fbbf5f0
commit
eceb106640
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@ -6,8 +6,8 @@
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* @author Quentin Young <qlyoung@cumulusnetworks.com>
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*/
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#include <zebra.h>
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#include "command_graph.h"
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#include <zebra.h>
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#include "memory.h"
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struct graph_node *
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@ -100,7 +100,7 @@ describe_node(struct graph_node *node, char* buffer, unsigned int bufsize)
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snprintf(buffer, bufsize, node->text);
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break;
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case NUMBER_GN:
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snprintf(buffer, bufsize, "%d", node->value);
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snprintf(buffer, bufsize, "%ld", node->value);
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break;
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case SELECTOR_GN:
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snprintf(buffer, bufsize, "<>");
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@ -1,8 +1,7 @@
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#ifndef COMMAND_GRAPH_H
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#define COMMAND_GRAPH_H
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#include "vty.h"
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#include "vector.h"
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#include "command.h"
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enum graph_node_type
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{
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@ -22,18 +21,19 @@ enum graph_node_type
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struct graph_node
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{
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enum graph_node_type type;
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vector children;
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int is_root; // true if first token in command
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enum graph_node_type type;// data type this node matches or holds
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int is_start; // whether this node is a start node
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vector children; // this node's children
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struct graph_node * end; // pointer to end for SELECTOR_GN & OPTION_GN
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// cmd_element struct pointer, only valid for END_GN
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struct cmd_element *element;
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/* various data fields for nodes */
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char* text; // for WORD_GN and VARIABLE_GN
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long value; // for NUMBER_GN
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long min, max; // for RANGE_GN
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long value; // for NUMBER_GN
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long min, max; // for RANGE_GN
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/* cmd_element struct pointer, only valid for END_GN */
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struct cmd_element *element;
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/* used for passing arguments to command functions */
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char *arg;
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};
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/*
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@ -91,4 +91,11 @@ walk_graph(struct graph_node *, int);
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*/
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extern char *
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describe_node(struct graph_node *, char *, unsigned int);
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/**
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* Frees the data associated with a graph_node.
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* @param[out] pointer to graph_node to free
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*/
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void
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free_node(struct graph_node *);
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#endif
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@ -1,56 +1,55 @@
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#include "command_match.h"
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#include "command_parse.h"
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#include <zebra.h>
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#include "memory.h"
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#include "vector.h"
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#include "command_match.h"
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/* prototypes */
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/* matcher helper prototypes */
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static int
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add_nexthops(struct list *, struct graph_node *);
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static struct list *
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match_build_argv_r (struct graph_node *start, vector vline, unsigned int n);
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/* token matcher prototypes */
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static enum match_type
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cmd_ipv4_match (const char *);
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match_ipv4 (const char *);
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static enum match_type
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cmd_ipv4_prefix_match (const char *);
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match_ipv4_prefix (const char *);
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static enum match_type
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cmd_ipv6_match (const char *);
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match_ipv6 (const char *);
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static enum match_type
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cmd_ipv6_prefix_match (const char *);
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match_ipv6_prefix (const char *);
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static enum match_type
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cmd_range_match (struct graph_node *, const char *str);
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match_range (struct graph_node *, const char *str);
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static enum match_type
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cmd_word_match (struct graph_node *, enum filter_type, const char *);
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match_word (struct graph_node *, enum filter_type, const char *);
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static vector
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cmd_make_strvec (const char *);
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static enum match_type
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match_number (struct graph_node *, const char *);
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static enum match_type
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match_variable (struct graph_node *, const char *);
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static enum match_type
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match_token (struct graph_node *, char *, enum filter_type);
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static vector
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cmd_make_strvec (const char *);
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/* matching functions */
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/**
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* Attempt to find an exact command match for a line of user input.
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*
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* @return cmd_element found, or NULL if there is no match.
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*/
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struct cmd_element
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match_command (struct graph_node *start, vector *command, enum filter_type filter)
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struct cmd_element *
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match_command (struct graph_node *start, const char *line, enum filter_type filter)
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{
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// get all possible completions
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struct list completions = match_command_complete (start, command, filter);
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struct list *completions = match_command_complete (start, line, filter);
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// one of them should be END_GN if this command matches
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struct graph_node *gn;
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struct listnode *node;
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for (ALL_LIST_ELEMENTS_RO(current,node,gn))
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for (ALL_LIST_ELEMENTS_RO(completions,node,gn))
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{
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if (gn->type == END_GN)
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break;
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return gn ? gn->element : NULL;
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}
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/**
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* Compiles next-hops for a given line of user input.
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*
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* Given a string of input and a start node for a matching DFA, runs the input
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* against the DFA until the input is exhausted or a mismatch is encountered.
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*
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* This function returns all valid next hops away from the current node.
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* - If the input is a valid prefix to a longer command(s), the set of next
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* hops determines what tokens are valid to follow the prefix. In other words,
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* the returned list is a list of possible completions.
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* - If the input matched a full command, exactly one of the next hops will be
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* a node of type END_GN and its function pointer will be set.
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* - If the input did not match any valid token sequence, the returned list
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* will be empty (there are no transitions away from a nonexistent state).
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*
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* @param[in] start the start node of the DFA to match against
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* @param[in] filter the filtering method
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* @param[in] input the input string
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* @return pointer to linked list with all possible next hops from the last
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* matched token. If this is empty, the input did not match any command.
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*/
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struct list *
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match_command_complete (struct graph_node *start, const char *input, enum filter_type filter)
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match_command_complete (struct graph_node *start, const char *line, enum filter_type filter)
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{
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// break command
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vector command = cmd_make_strvec (input);
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// vectorize command line
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vector vline = cmd_make_strvec (line);
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// pointer to next input token to match
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char *token;
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add_nexthops(next, start);
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unsigned int idx;
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for (idx = 0; idx < vector_active(command) && next->count > 0; idx++)
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for (idx = 0; idx < vector_active(vline) && next->count > 0; idx++)
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{
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list_free (current);
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current = next;
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next = list_new();
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token = vector_slot(command, idx);
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token = vector_slot(vline, idx);
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list_delete_all_node(matched);
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list_free (current);
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list_free (matched);
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cmd_free_strvec(vline);
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return next;
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}
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/**
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* Adds all children that are reachable by one parser hop
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* to the given list. NUL_GN, SELECTOR_GN, and OPTION_GN
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* nodes are treated as though their children are attached
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* to their parent.
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* nodes are treated as transparent.
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*
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* @param[out] l the list to add the children to
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* @param[in] node the node to get the children of
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return added;
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}
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/**
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* Build the appropriate argv for a matched command.
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*
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* @param[in] command the command element
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* @param[in] the input line matching this command
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* @param[out] argv
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* @return argc
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*
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int
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match_build_argv (struct cmd_element *command, vector *input, char *argv)
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struct list *
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match_build_argv (const char *line, struct cmd_element *element)
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{
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// build individual command graph
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struct graph_node *start = new_node(NUL_GN);
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cmd_parse_format(start, command->string);
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}
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*/
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struct list *argv = NULL;
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// parse command
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struct graph_node *start = new_node(NUL_GN);
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parse_command_format(start, element);
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vector vline = cmd_make_strvec (line);
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for (unsigned int i = 0; i < vector_active(start->children); i++)
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{
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// call recursive builder on each starting child
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argv = match_build_argv_r (vector_slot(start->children, i), vline, 0);
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// if any of them succeed, return their argv (there should only be one)
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if (argv) break;
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}
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return argv;
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}
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static struct list *
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match_build_argv_r (struct graph_node *start, vector vline, unsigned int n)
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{
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// if we don't match this node, die
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if (match_token(start, vector_slot(vline, n), FILTER_STRICT) == no_match)
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return NULL;
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// some stuffs we need
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struct list *argv = list_new();
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struct graph_node *gn;
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struct listnode *ln;
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// append current arg
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start->arg = strdup(vector_slot(vline, n));
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listnode_add(argv, start);
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// get all possible nexthops
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struct list *next = list_new();
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add_nexthops(next, start);
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// check if one of them is END_GN
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for (ALL_LIST_ELEMENTS_RO(next,ln,gn))
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{
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if (gn->type == END_GN){
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fprintf(stderr, "Hit END_GN while searching next set of node with text %s\n", start->text);
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return argv;
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}
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}
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// if we have no more input, why even live?
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if (n+1 >= vector_active(vline)) return NULL;
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// otherwise recurse on all nexthops
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for (ALL_LIST_ELEMENTS_RO(next,ln,gn))
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{
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for (unsigned int i = 0; i < n; i++) fprintf(stderr, "\t");
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fprintf(stderr, "Recursing on node %s for token %s\n", gn->text, (char*) vector_slot(vline, n+1));
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struct list *result = match_build_argv_r (gn, vline, n+1);
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if (result != NULL) {
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list_add_list (argv, result);
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return argv;
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}
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}
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return NULL;
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}
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/* matching utility functions */
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{
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switch (node->type) {
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case WORD_GN:
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return cmd_word_match (node, filter, token);
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return match_word (node, filter, token);
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case IPV4_GN:
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return cmd_ipv4_match (token);
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return match_ipv4 (token);
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case IPV4_PREFIX_GN:
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return cmd_ipv4_prefix_match (token);
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return match_ipv4_prefix (token);
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case IPV6_GN:
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return cmd_ipv6_match (token);
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return match_ipv6 (token);
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case IPV6_PREFIX_GN:
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return cmd_ipv6_prefix_match (token);
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return match_ipv6_prefix (token);
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case RANGE_GN:
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return cmd_range_match (node, token);
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return match_range (node, token);
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case NUMBER_GN:
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return cmd_number_match (node, token);
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return match_number (node, token);
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case VARIABLE_GN:
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return cmd_variable_match (node, token);
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return match_variable (node, token);
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case END_GN:
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default:
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return no_match;
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}
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#define IPV4_PREFIX_STR "0123456789./"
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static enum match_type
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cmd_ipv4_match (const char *str)
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match_ipv4 (const char *str)
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{
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struct sockaddr_in sin_dummy;
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}
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static enum match_type
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cmd_ipv4_prefix_match (const char *str)
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match_ipv4_prefix (const char *str)
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{
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struct sockaddr_in sin_dummy;
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const char *delim = "/\0";
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#define IPV6_PREFIX_STR "0123456789abcdefABCDEF:./"
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static enum match_type
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cmd_ipv6_match (const char *str)
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match_ipv6 (const char *str)
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{
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struct sockaddr_in6 sin6_dummy;
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int ret;
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}
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static enum match_type
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cmd_ipv6_prefix_match (const char *str)
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match_ipv6_prefix (const char *str)
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{
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struct sockaddr_in6 sin6_dummy;
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const char *delim = "/\0";
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#endif
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static enum match_type
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cmd_range_match (struct graph_node *rangenode, const char *str)
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match_range (struct graph_node *rangenode, const char *str)
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{
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char *endptr = NULL;
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signed long long val;
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signed long val;
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if (str == NULL)
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return 1;
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}
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static enum match_type
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cmd_word_match(struct graph_node *wordnode,
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enum filter_type filter,
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const char *word)
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match_word(struct graph_node *wordnode,
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enum filter_type filter,
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const char *word)
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{
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if (filter == FILTER_RELAXED)
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{
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if (!word || !strlen(word))
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}
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}
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cmd_number_match(struct graph_node *numnode, const char *word)
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static enum match_type
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match_number(struct graph_node *numnode, const char *word)
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{
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if (!strcmp("\0", word)) return no_match;
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char *endptr;
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return num == numnode->value ? exact_match : no_match;
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}
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cmd_variable_match(struct graph_node *varnode, const char *word)
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#define VARIABLE_ALPHABET "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890"
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static enum match_type
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match_variable(struct graph_node *varnode, const char *word)
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{
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// I guess this matches whatever?
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return exact_match;
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}
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static vector
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cmd_make_strvec (const char *string)
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{
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const char *cp, *start;
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char *token;
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int strlen;
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vector strvec;
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if (string == NULL)
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return NULL;
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cp = string;
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/* Skip white spaces. */
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while (isspace ((int) *cp) && *cp != '\0')
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cp++;
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/* Return if there is only white spaces */
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if (*cp == '\0')
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return NULL;
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if (*cp == '!' || *cp == '#')
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return NULL;
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/* Prepare return vector. */
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strvec = vector_init (VECTOR_MIN_SIZE);
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/* Copy each command piece and set into vector. */
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while (1)
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{
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start = cp;
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while (!(isspace ((int) *cp) || *cp == '\r' || *cp == '\n') &&
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*cp != '\0')
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cp++;
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strlen = cp - start;
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token = XMALLOC (MTYPE_STRVEC, strlen + 1);
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memcpy (token, start, strlen);
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*(token + strlen) = '\0';
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vector_set (strvec, token);
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while ((isspace ((int) *cp) || *cp == '\n' || *cp == '\r') &&
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*cp != '\0')
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cp++;
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if (*cp == '\0')
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return strvec;
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}
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return strlen(word) == strspn(word, VARIABLE_ALPHABET) && isalpha(word[0]) ?
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exact_match : no_match;
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}
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@ -1,22 +1,21 @@
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#ifndef COMMAND_MATCH_H
|
||||
#define COMMAND_MATCH_H
|
||||
|
||||
#include "command.h"
|
||||
#include "command_graph.h"
|
||||
#include "linklist.h"
|
||||
|
||||
/**
|
||||
* Filter types. These tell the parser whether to allow
|
||||
* partial matching on tokens.
|
||||
*/
|
||||
|
||||
/** These definitions exist in command.c in
|
||||
* the current engine but will be relocated
|
||||
* here in the new engine*/
|
||||
enum filter_type
|
||||
{
|
||||
FILTER_RELAXED,
|
||||
FILTER_STRICT
|
||||
};
|
||||
|
||||
/**
|
||||
* Command matcher result value.
|
||||
*/
|
||||
/* matcher result value. */
|
||||
enum matcher_rv
|
||||
{
|
||||
MATCHER_OK,
|
||||
|
@ -34,8 +33,8 @@ enum match_type
|
|||
partly_match,
|
||||
exact_match
|
||||
};
|
||||
/**
|
||||
* Defines which matcher_rv values constitute
|
||||
|
||||
/* Defines which matcher_rv values constitute
|
||||
* an error. Should be used against matcher_rv
|
||||
* return values to do basic error checking.
|
||||
*/
|
||||
|
@ -46,7 +45,46 @@ enum match_type
|
|||
|| (matcher_rv) == MATCHER_EXCEED_ARGC_MAX \
|
||||
)
|
||||
|
||||
/**
|
||||
* Attempt to find an exact command match for a line of user input.
|
||||
*
|
||||
* @return cmd_element found, or NULL if there is no match.
|
||||
*/
|
||||
struct cmd_element *
|
||||
match_command (struct graph_node *, const char *, enum filter_type);
|
||||
|
||||
/**
|
||||
* Compiles next-hops for a given line of user input.
|
||||
*
|
||||
* Given a string of input and a start node for a matching DFA, runs the input
|
||||
* against the DFA until the input is exhausted or a mismatch is encountered.
|
||||
*
|
||||
* This function returns all valid next hops away from the current node.
|
||||
* - If the input is a valid prefix to a longer command(s), the set of next
|
||||
* hops determines what tokens are valid to follow the prefix. In other words,
|
||||
* the returned list is a list of possible completions.
|
||||
* - If the input matched a full command, exactly one of the next hops will be
|
||||
* a node of type END_GN and its function pointer will be set.
|
||||
* - If the input did not match any valid token sequence, the returned list
|
||||
* will be empty (there are no transitions away from a nonexistent state).
|
||||
*
|
||||
* @param[in] start the start node of the DFA to match against
|
||||
* @param[in] filter the filtering method
|
||||
* @param[in] input the input string
|
||||
* @return pointer to linked list with all possible next hops from the last
|
||||
* matched token. If this is empty, the input did not match any command.
|
||||
*/
|
||||
struct list *
|
||||
match_command (struct graph_node *, enum filter_type, const char *);
|
||||
match_command_complete (struct graph_node *, const char *, enum filter_type);
|
||||
|
||||
/**
|
||||
* Builds an argument list given a cmd_element and a matching input line.
|
||||
*
|
||||
* @param[in] input line
|
||||
* @param[in] cmd_element struct
|
||||
* @return pointer to argument linked list
|
||||
*/
|
||||
struct list *
|
||||
match_build_argv (const char *, struct cmd_element *);
|
||||
|
||||
#endif
|
||||
|
|
|
@ -1,437 +0,0 @@
|
|||
/*
|
||||
* Zebra configuration command interface routine
|
||||
* Copyright (C) 1997, 98 Kunihiro Ishiguro
|
||||
*
|
||||
* This file is part of GNU Zebra.
|
||||
*
|
||||
* GNU Zebra is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published
|
||||
* by the Free Software Foundation; either version 2, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
* GNU Zebra is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with GNU Zebra; see the file COPYING. If not, write to the
|
||||
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef _ZEBRA_COMMAND_H
|
||||
#define _ZEBRA_COMMAND_H
|
||||
|
||||
#include "vector.h"
|
||||
#include "vty.h"
|
||||
#include "lib/route_types.h"
|
||||
|
||||
/* Host configuration variable */
|
||||
struct host
|
||||
{
|
||||
/* Host name of this router. */
|
||||
char *name;
|
||||
|
||||
/* Password for vty interface. */
|
||||
char *password;
|
||||
char *password_encrypt;
|
||||
|
||||
/* Enable password */
|
||||
char *enable;
|
||||
char *enable_encrypt;
|
||||
|
||||
/* System wide terminal lines. */
|
||||
int lines;
|
||||
|
||||
/* Log filename. */
|
||||
char *logfile;
|
||||
|
||||
/* config file name of this host */
|
||||
char *config;
|
||||
|
||||
/* Flags for services */
|
||||
int advanced;
|
||||
int encrypt;
|
||||
|
||||
/* Banner configuration. */
|
||||
const char *motd;
|
||||
char *motdfile;
|
||||
};
|
||||
|
||||
/* There are some command levels which called from command node. */
|
||||
enum node_type
|
||||
{
|
||||
AUTH_NODE, /* Authentication mode of vty interface. */
|
||||
RESTRICTED_NODE, /* Restricted view mode */
|
||||
VIEW_NODE, /* View node. Default mode of vty interface. */
|
||||
AUTH_ENABLE_NODE, /* Authentication mode for change enable. */
|
||||
ENABLE_NODE, /* Enable node. */
|
||||
CONFIG_NODE, /* Config node. Default mode of config file. */
|
||||
SERVICE_NODE, /* Service node. */
|
||||
DEBUG_NODE, /* Debug node. */
|
||||
VRF_DEBUG_NODE, /* Vrf Debug node. */
|
||||
AAA_NODE, /* AAA node. */
|
||||
KEYCHAIN_NODE, /* Key-chain node. */
|
||||
KEYCHAIN_KEY_NODE, /* Key-chain key node. */
|
||||
VRF_NODE, /* VRF mode node. */
|
||||
INTERFACE_NODE, /* Interface mode node. */
|
||||
ZEBRA_NODE, /* zebra connection node. */
|
||||
TABLE_NODE, /* rtm_table selection node. */
|
||||
RIP_NODE, /* RIP protocol mode node. */
|
||||
RIPNG_NODE, /* RIPng protocol mode node. */
|
||||
BGP_NODE, /* BGP protocol mode which includes BGP4+ */
|
||||
BGP_VPNV4_NODE, /* BGP MPLS-VPN PE exchange. */
|
||||
BGP_VPNV6_NODE, /* BGP MPLS-VPN PE exchange. */
|
||||
BGP_IPV4_NODE, /* BGP IPv4 unicast address family. */
|
||||
BGP_IPV4M_NODE, /* BGP IPv4 multicast address family. */
|
||||
BGP_IPV6_NODE, /* BGP IPv6 address family */
|
||||
BGP_IPV6M_NODE, /* BGP IPv6 multicast address family. */
|
||||
BGP_ENCAP_NODE, /* BGP ENCAP SAFI */
|
||||
BGP_ENCAPV6_NODE, /* BGP ENCAP SAFI */
|
||||
OSPF_NODE, /* OSPF protocol mode */
|
||||
OSPF6_NODE, /* OSPF protocol for IPv6 mode */
|
||||
ISIS_NODE, /* ISIS protocol mode */
|
||||
PIM_NODE, /* PIM protocol mode */
|
||||
MASC_NODE, /* MASC for multicast. */
|
||||
IRDP_NODE, /* ICMP Router Discovery Protocol mode. */
|
||||
IP_NODE, /* Static ip route node. */
|
||||
ACCESS_NODE, /* Access list node. */
|
||||
PREFIX_NODE, /* Prefix list node. */
|
||||
ACCESS_IPV6_NODE, /* Access list node. */
|
||||
PREFIX_IPV6_NODE, /* Prefix list node. */
|
||||
AS_LIST_NODE, /* AS list node. */
|
||||
COMMUNITY_LIST_NODE, /* Community list node. */
|
||||
RMAP_NODE, /* Route map node. */
|
||||
SMUX_NODE, /* SNMP configuration node. */
|
||||
DUMP_NODE, /* Packet dump node. */
|
||||
FORWARDING_NODE, /* IP forwarding node. */
|
||||
PROTOCOL_NODE, /* protocol filtering node */
|
||||
VTY_NODE, /* Vty node. */
|
||||
};
|
||||
|
||||
/* Node which has some commands and prompt string and configuration
|
||||
function pointer . */
|
||||
struct cmd_node
|
||||
{
|
||||
/* Node index. */
|
||||
enum node_type node;
|
||||
|
||||
/* Prompt character at vty interface. */
|
||||
const char *prompt;
|
||||
|
||||
/* Is this node's configuration goes to vtysh ? */
|
||||
int vtysh;
|
||||
|
||||
/* Node's configuration write function */
|
||||
int (*func) (struct vty *);
|
||||
|
||||
/* Start of this node's command graph */
|
||||
struct graph_node * cmd_graph;
|
||||
};
|
||||
|
||||
enum
|
||||
{
|
||||
CMD_ATTR_DEPRECATED = 1,
|
||||
CMD_ATTR_HIDDEN,
|
||||
};
|
||||
|
||||
/* Structure of command element. */
|
||||
struct cmd_element
|
||||
{
|
||||
const char *string; // command format string
|
||||
const char *doc; // command doc string
|
||||
int daemon; // daemon associated with command
|
||||
u_char attr; // Command attributes
|
||||
|
||||
// function for this command
|
||||
int (*func) (struct cmd_element *, struct vty *, int, const char *[]);
|
||||
};
|
||||
|
||||
/* argument to be recorded on argv[] if it's not a literal */
|
||||
#define TERMINAL_RECORD(t) ((t) >= TERMINAL_OPTION)
|
||||
|
||||
/* Return value of the commands. */
|
||||
#define CMD_SUCCESS 0
|
||||
#define CMD_WARNING 1
|
||||
#define CMD_ERR_NO_MATCH 2
|
||||
#define CMD_ERR_AMBIGUOUS 3
|
||||
#define CMD_ERR_INCOMPLETE 4
|
||||
#define CMD_ERR_EXEED_ARGC_MAX 5
|
||||
#define CMD_ERR_NOTHING_TODO 6
|
||||
#define CMD_COMPLETE_FULL_MATCH 7
|
||||
#define CMD_COMPLETE_MATCH 8
|
||||
#define CMD_COMPLETE_LIST_MATCH 9
|
||||
#define CMD_SUCCESS_DAEMON 10
|
||||
#define CMD_ERR_NO_FILE 11
|
||||
|
||||
/* Argc max counts. */
|
||||
#define CMD_ARGC_MAX 25
|
||||
|
||||
/* Turn off these macros when uisng cpp with extract.pl */
|
||||
#ifndef VTYSH_EXTRACT_PL
|
||||
|
||||
/* helper defines for end-user DEFUN* macros */
|
||||
#define DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attrs, dnum) \
|
||||
struct cmd_element cmdname = \
|
||||
{ \
|
||||
.string = cmdstr, \
|
||||
.doc = helpstr, \
|
||||
.daemon = dnum, \
|
||||
.attr = attrs, \
|
||||
.func = funcname, \
|
||||
};
|
||||
|
||||
#define DEFUN_CMD_FUNC_DECL(funcname) \
|
||||
static int funcname (struct cmd_element *, struct vty *, int, const char *[]);
|
||||
|
||||
#define DEFUN_CMD_FUNC_TEXT(funcname) \
|
||||
static int funcname \
|
||||
(struct cmd_element *self __attribute__ ((unused)), \
|
||||
struct vty *vty __attribute__ ((unused)), \
|
||||
int argc __attribute__ ((unused)), \
|
||||
const char *argv[] __attribute__ ((unused)) )
|
||||
|
||||
/* DEFUN for vty command interface.
|
||||
*
|
||||
* DEFUN(funcname, cmdname, cmdstr, helpstr)
|
||||
*
|
||||
* funcname
|
||||
* ========
|
||||
* Name of the function that will be defined.
|
||||
*
|
||||
* cmdname
|
||||
* =======
|
||||
* Name of the struct that will be defined for the command.
|
||||
*
|
||||
* cmdstr
|
||||
* ======
|
||||
* The cmdstr defines the command syntax. It is used by the vty subsystem
|
||||
* and vtysh to perform matching and completion in the CLI.
|
||||
*
|
||||
* Syntax Summary
|
||||
* ----------------
|
||||
* <summary>
|
||||
*
|
||||
* Abbreviated BNF
|
||||
* ----------------
|
||||
* <bnf>
|
||||
*
|
||||
*
|
||||
* helpstr
|
||||
* =======
|
||||
*
|
||||
* The helpstr is used to show a short explantion for the commands that
|
||||
* are available when the user presses '?' on the CLI. It is the concatenation
|
||||
* of the helpstrings for all the tokens that make up the command.
|
||||
*
|
||||
* There should be one helpstring for each token in the cmdstr except those
|
||||
* containing other tokens, like Multiple or Keyword Tokens. For those, there
|
||||
* will only be the helpstrings of the contained tokens.
|
||||
*
|
||||
* The individual helpstrings are expected to be in the same order as their
|
||||
* respective Tokens appear in the cmdstr. They should each be terminated with
|
||||
* a linefeed. The last helpstring should be terminated with a linefeed as well.
|
||||
*
|
||||
* Care should also be taken to avoid having similar tokens with different
|
||||
* helpstrings. Imagine e.g. the commands "show ip ospf" and "show ip bgp".
|
||||
* they both contain a helpstring for "show", but only one will be displayed
|
||||
* when the user enters "sh?". If those two helpstrings differ, it is not
|
||||
* defined which one will be shown and the behavior is therefore unpredictable.
|
||||
*/
|
||||
#define DEFUN(funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_FUNC_DECL(funcname) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0) \
|
||||
DEFUN_CMD_FUNC_TEXT(funcname)
|
||||
|
||||
#define DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, attr) \
|
||||
DEFUN_CMD_FUNC_DECL(funcname) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0) \
|
||||
DEFUN_CMD_FUNC_TEXT(funcname)
|
||||
|
||||
#define DEFUN_HIDDEN(funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_ATTR (funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
|
||||
|
||||
#define DEFUN_DEPRECATED(funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_ATTR (funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED) \
|
||||
|
||||
/* DEFUN_NOSH for commands that vtysh should ignore */
|
||||
#define DEFUN_NOSH(funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN(funcname, cmdname, cmdstr, helpstr)
|
||||
|
||||
/* DEFSH for vtysh. */
|
||||
#define DEFSH(daemon, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, 0, daemon) \
|
||||
|
||||
#define DEFSH_HIDDEN(daemon, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, daemon) \
|
||||
|
||||
/* DEFUN + DEFSH */
|
||||
#define DEFUNSH(daemon, funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_FUNC_DECL(funcname) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon) \
|
||||
DEFUN_CMD_FUNC_TEXT(funcname)
|
||||
|
||||
/* DEFUN + DEFSH with attributes */
|
||||
#define DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr, attr) \
|
||||
DEFUN_CMD_FUNC_DECL(funcname) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, daemon) \
|
||||
DEFUN_CMD_FUNC_TEXT(funcname)
|
||||
|
||||
#define DEFUNSH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUNSH_ATTR (daemon, funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
|
||||
|
||||
#define DEFUNSH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUNSH_ATTR (daemon, funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED)
|
||||
|
||||
/* ALIAS macro which define existing command's alias. */
|
||||
#define ALIAS(funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0)
|
||||
|
||||
#define ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, attr) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)
|
||||
|
||||
#define ALIAS_HIDDEN(funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, 0)
|
||||
|
||||
#define ALIAS_DEPRECATED(funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED, 0)
|
||||
|
||||
#define ALIAS_SH(daemon, funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon)
|
||||
|
||||
#define ALIAS_SH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, daemon)
|
||||
|
||||
#define ALIAS_SH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr) \
|
||||
DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED, daemon)
|
||||
|
||||
#endif /* VTYSH_EXTRACT_PL */
|
||||
|
||||
/* Some macroes */
|
||||
|
||||
/*
|
||||
* Sometimes #defines create maximum values that
|
||||
* need to have strings created from them that
|
||||
* allow the parser to match against them.
|
||||
* These macros allow that.
|
||||
*/
|
||||
#define CMD_CREATE_STR(s) CMD_CREATE_STR_HELPER(s)
|
||||
#define CMD_CREATE_STR_HELPER(s) #s
|
||||
#define CMD_RANGE_STR(a,s) "<" CMD_CREATE_STR(a) "-" CMD_CREATE_STR(s) ">"
|
||||
|
||||
/* Common descriptions. */
|
||||
#define SHOW_STR "Show running system information\n"
|
||||
#define IP_STR "IP information\n"
|
||||
#define IPV6_STR "IPv6 information\n"
|
||||
#define NO_STR "Negate a command or set its defaults\n"
|
||||
#define REDIST_STR "Redistribute information from another routing protocol\n"
|
||||
#define CLEAR_STR "Reset functions\n"
|
||||
#define RIP_STR "RIP information\n"
|
||||
#define BGP_STR "BGP information\n"
|
||||
#define BGP_SOFT_STR "Soft reconfig inbound and outbound updates\n"
|
||||
#define BGP_SOFT_IN_STR "Send route-refresh unless using 'soft-reconfiguration inbound'\n"
|
||||
#define BGP_SOFT_OUT_STR "Resend all outbound updates\n"
|
||||
#define BGP_SOFT_RSCLIENT_RIB_STR "Soft reconfig for rsclient RIB\n"
|
||||
#define OSPF_STR "OSPF information\n"
|
||||
#define NEIGHBOR_STR "Specify neighbor router\n"
|
||||
#define DEBUG_STR "Debugging functions (see also 'undebug')\n"
|
||||
#define UNDEBUG_STR "Disable debugging functions (see also 'debug')\n"
|
||||
#define ROUTER_STR "Enable a routing process\n"
|
||||
#define AS_STR "AS number\n"
|
||||
#define MBGP_STR "MBGP information\n"
|
||||
#define MATCH_STR "Match values from routing table\n"
|
||||
#define SET_STR "Set values in destination routing protocol\n"
|
||||
#define OUT_STR "Filter outgoing routing updates\n"
|
||||
#define IN_STR "Filter incoming routing updates\n"
|
||||
#define V4NOTATION_STR "specify by IPv4 address notation(e.g. 0.0.0.0)\n"
|
||||
#define OSPF6_NUMBER_STR "Specify by number\n"
|
||||
#define INTERFACE_STR "Interface infomation\n"
|
||||
#define IFNAME_STR "Interface name(e.g. ep0)\n"
|
||||
#define IP6_STR "IPv6 Information\n"
|
||||
#define OSPF6_STR "Open Shortest Path First (OSPF) for IPv6\n"
|
||||
#define OSPF6_ROUTER_STR "Enable a routing process\n"
|
||||
#define OSPF6_INSTANCE_STR "<1-65535> Instance ID\n"
|
||||
#define SECONDS_STR "<1-65535> Seconds\n"
|
||||
#define ROUTE_STR "Routing Table\n"
|
||||
#define PREFIX_LIST_STR "Build a prefix list\n"
|
||||
#define OSPF6_DUMP_TYPE_LIST \
|
||||
"(neighbor|interface|area|lsa|zebra|config|dbex|spf|route|lsdb|redistribute|hook|asbr|prefix|abr)"
|
||||
#define ISIS_STR "IS-IS information\n"
|
||||
#define AREA_TAG_STR "[area tag]\n"
|
||||
#define COMMUNITY_AANN_STR "Community number where AA and NN are <0-65535>\n"
|
||||
#define COMMUNITY_VAL_STR "Community number in AA:NN format (where AA and NN are <0-65535>) or local-AS|no-advertise|no-export|internet or additive\n"
|
||||
|
||||
#define CONF_BACKUP_EXT ".sav"
|
||||
|
||||
/* IPv4 only machine should not accept IPv6 address for peer's IP
|
||||
address. So we replace VTY command string like below. */
|
||||
#ifdef HAVE_IPV6
|
||||
#define NEIGHBOR_CMD "neighbor (A.B.C.D|X:X::X:X) "
|
||||
#define NO_NEIGHBOR_CMD "no neighbor (A.B.C.D|X:X::X:X) "
|
||||
#define NEIGHBOR_ADDR_STR "Neighbor address\nIPv6 address\n"
|
||||
#define NEIGHBOR_CMD2 "neighbor (A.B.C.D|X:X::X:X|WORD) "
|
||||
#define NO_NEIGHBOR_CMD2 "no neighbor (A.B.C.D|X:X::X:X|WORD) "
|
||||
#define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor IPv6 address\nInterface name or neighbor tag\n"
|
||||
#define NEIGHBOR_ADDR_STR3 "Neighbor address\nIPv6 address\nInterface name\n"
|
||||
#else
|
||||
#define NEIGHBOR_CMD "neighbor A.B.C.D "
|
||||
#define NO_NEIGHBOR_CMD "no neighbor A.B.C.D "
|
||||
#define NEIGHBOR_ADDR_STR "Neighbor address\n"
|
||||
#define NEIGHBOR_CMD2 "neighbor (A.B.C.D|WORD) "
|
||||
#define NO_NEIGHBOR_CMD2 "no neighbor (A.B.C.D|WORD) "
|
||||
#define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor tag\n"
|
||||
#endif /* HAVE_IPV6 */
|
||||
|
||||
/* Dynamic neighbor (listen range) configuration */
|
||||
#ifdef HAVE_IPV6
|
||||
#define LISTEN_RANGE_CMD "bgp listen range (A.B.C.D/M|X:X::X:X/M) "
|
||||
#define LISTEN_RANGE_ADDR_STR "Neighbor address\nNeighbor IPv6 address\n"
|
||||
#else
|
||||
#define LISTEN_RANGE_CMD "bgp listen range A.B.C.D/M "
|
||||
#define LISTEN_RANGE_ADDR_STR "Neighbor address\n"
|
||||
#endif /* HAVE_IPV6 */
|
||||
|
||||
/* Prototypes. */
|
||||
extern void install_node (struct cmd_node *, int (*) (struct vty *));
|
||||
extern void install_default (enum node_type);
|
||||
extern void install_element (enum node_type, struct cmd_element *);
|
||||
|
||||
/* Concatenates argv[shift] through argv[argc-1] into a single NUL-terminated
|
||||
string with a space between each element (allocated using
|
||||
XMALLOC(MTYPE_TMP)). Returns NULL if shift >= argc. */
|
||||
extern char *argv_concat (const char **argv, int argc, int shift);
|
||||
|
||||
extern vector cmd_make_strvec (const char *);
|
||||
extern void cmd_free_strvec (vector);
|
||||
extern vector cmd_describe_command (vector, struct vty *, int *status);
|
||||
extern char **cmd_complete_command (vector, struct vty *, int *status);
|
||||
extern char **cmd_complete_command_lib (vector, struct vty *, int *status, int islib);
|
||||
extern const char *cmd_prompt (enum node_type);
|
||||
extern int command_config_read_one_line (struct vty *vty, struct cmd_element **, int use_config_node);
|
||||
extern int config_from_file (struct vty *, FILE *, unsigned int *line_num);
|
||||
extern enum node_type node_parent (enum node_type);
|
||||
extern int cmd_execute_command (vector, struct vty *, struct cmd_element **, int);
|
||||
extern int cmd_execute_command_strict (vector, struct vty *, struct cmd_element **);
|
||||
extern void cmd_init (int);
|
||||
extern void cmd_terminate (void);
|
||||
|
||||
/* Export typical functions. */
|
||||
extern struct cmd_element config_end_cmd;
|
||||
extern struct cmd_element config_exit_cmd;
|
||||
extern struct cmd_element config_quit_cmd;
|
||||
extern struct cmd_element config_help_cmd;
|
||||
extern struct cmd_element config_list_cmd;
|
||||
extern char *host_config_file (void);
|
||||
extern void host_config_set (const char *);
|
||||
|
||||
extern void print_version (const char *);
|
||||
|
||||
extern int cmd_banner_motd_file (const char *);
|
||||
|
||||
/* struct host global, ick */
|
||||
extern struct host host;
|
||||
|
||||
/* "<cr>" global */
|
||||
extern char *command_cr;
|
||||
#endif /* _ZEBRA_COMMAND_H */
|
|
@ -9,21 +9,23 @@
|
|||
*/
|
||||
|
||||
%{
|
||||
#include "command_graph.h"
|
||||
#include "command_new.h"
|
||||
|
||||
extern int yylex(void);
|
||||
extern void yyerror(const char *);
|
||||
|
||||
// compile with debugging facilities
|
||||
#define YYDEBUG 1
|
||||
%}
|
||||
%code provides {
|
||||
extern struct
|
||||
graph_node *cmd_parse_format(const char *, const char *, struct graph_node *);
|
||||
extern void
|
||||
set_buffer_string(const char *);
|
||||
%code requires {
|
||||
#include "command.h"
|
||||
#include "command_graph.h"
|
||||
}
|
||||
%code provides {
|
||||
extern void
|
||||
set_buffer_string(const char *);
|
||||
struct graph_node *
|
||||
parse_command_format(struct graph_node *, struct cmd_element *);
|
||||
}
|
||||
|
||||
|
||||
/* valid types for tokens */
|
||||
%union{
|
||||
|
@ -45,7 +47,7 @@ struct graph_node *optnode_start, // start node for option set
|
|||
struct graph_node *selnode_start, // start node for selector set
|
||||
*selnode_end; // end node for selector set
|
||||
|
||||
const struct cmd_element *command; // command we're parsing
|
||||
struct cmd_element *command; // command we're parsing
|
||||
%}
|
||||
|
||||
%token <node> WORD
|
||||
|
@ -86,12 +88,16 @@ start: sentence_root
|
|||
struct graph_node *end = new_node(END_GN);
|
||||
end->element = command;
|
||||
|
||||
// ensure there are no END_GN children
|
||||
for (unsigned int i = 0; i < vector_active(currnode->children); i++)
|
||||
{
|
||||
struct graph_node *child = vector_slot(currnode->children, i);
|
||||
if (child->type == END_GN)
|
||||
yyerror("Duplicate command.");
|
||||
}
|
||||
|
||||
// add node
|
||||
end = add_node(currnode, end);
|
||||
|
||||
// check that we did not get back an existing node
|
||||
if (!strcmp(command->string, end->element->string)
|
||||
yyerror("Duplicate command.");
|
||||
}
|
||||
|
||||
sentence_root: WORD
|
||||
|
@ -166,12 +172,7 @@ placeholder_token:
|
|||
// get the numbers out
|
||||
strsep(&yylval.string, "(-)");
|
||||
$$->min = atoi( strsep(&yylval.string, "(-)") );
|
||||
strsep(&yylval.string, "(-)");
|
||||
$$->max = atoi( strsep(&yylval.string, "(-)") );
|
||||
|
||||
// we could do this a variety of ways with either
|
||||
// the lexer or the parser, but this is the simplest
|
||||
// and involves the least amount of free()
|
||||
}
|
||||
;
|
||||
|
||||
|
@ -304,9 +305,9 @@ void yyerror(char const *message) {
|
|||
}
|
||||
|
||||
struct graph_node *
|
||||
cmd_parse_format(struct graph_node *start, struct cmd_element *cmd)
|
||||
parse_command_format(struct graph_node *start, struct cmd_element *cmd)
|
||||
{
|
||||
fprintf(stderr, "parsing: %s\n", string);
|
||||
fprintf(stderr, "parsing: %s\n", cmd->string);
|
||||
|
||||
/* clear state pointers */
|
||||
startnode = currnode = seqhead = NULL;
|
||||
|
@ -318,7 +319,7 @@ cmd_parse_format(struct graph_node *start, struct cmd_element *cmd)
|
|||
// command string
|
||||
command = cmd;
|
||||
// make flex read from a string
|
||||
set_buffer_string(input);
|
||||
set_buffer_string(command->string);
|
||||
// initialize the start node of this command dfa
|
||||
startnode = start;
|
||||
// parse command into DFA
|
||||
|
|
|
@ -14,11 +14,11 @@ DEFUN (grammar_test,
|
|||
GRAMMAR_STR
|
||||
"command to pass to new parser\n")
|
||||
{
|
||||
|
||||
const char* command = argv_concat(argv, argc, 0);
|
||||
cmd_parse_format(command, "lol", nodegraph);
|
||||
char* command = argv_concat(argv, argc, 0);
|
||||
struct cmd_element *cmd = malloc(sizeof(struct cmd_element));
|
||||
cmd->string = command;
|
||||
parse_command_format(nodegraph, cmd);
|
||||
walk_graph(nodegraph, 0);
|
||||
|
||||
return CMD_SUCCESS;
|
||||
}
|
||||
|
||||
|
@ -32,15 +32,15 @@ DEFUN (grammar_test_show,
|
|||
return CMD_SUCCESS;
|
||||
}
|
||||
|
||||
DEFUN (grammar_test_match,
|
||||
grammar_test_match_cmd,
|
||||
"grammar match .COMMAND",
|
||||
DEFUN (grammar_test_complete,
|
||||
grammar_test_complete_cmd,
|
||||
"grammar complete .COMMAND",
|
||||
GRAMMAR_STR
|
||||
"attempt to match input on DFA\n"
|
||||
"command to match")
|
||||
"attempt to complete input on DFA\n"
|
||||
"command to complete")
|
||||
{
|
||||
const char* command = argv_concat(argv, argc, 0);
|
||||
struct list *result = match_command(nodegraph, FILTER_STRICT, command);
|
||||
struct list *result = match_command_complete (nodegraph, command, FILTER_STRICT);
|
||||
|
||||
if (result->count == 0) // invalid command
|
||||
fprintf(stderr, "%% Unknown command\n");
|
||||
|
@ -53,7 +53,7 @@ DEFUN (grammar_test_match,
|
|||
// print possible next hops, if any
|
||||
for (ALL_LIST_ELEMENTS_RO(result,node,cnode)) {
|
||||
if (cnode->type == END_GN)
|
||||
fprintf(stderr, "<cr>");
|
||||
fprintf(stderr, "<cr>\n");
|
||||
else
|
||||
fprintf(stderr, "%s\n", describe_node(cnode, desc, 50));
|
||||
}
|
||||
|
@ -64,6 +64,39 @@ DEFUN (grammar_test_match,
|
|||
return CMD_SUCCESS;
|
||||
}
|
||||
|
||||
DEFUN (grammar_test_match,
|
||||
grammar_test_match_cmd,
|
||||
"grammar match .COMMAND",
|
||||
GRAMMAR_STR
|
||||
"attempt to match input on DFA\n"
|
||||
"command to match")
|
||||
{
|
||||
const char* command = argv_concat(argv, argc, 0);
|
||||
struct cmd_element *element = match_command (nodegraph, command, FILTER_STRICT);
|
||||
|
||||
if (element)
|
||||
fprintf(stderr, "Matched: %s\n", element->string);
|
||||
else {
|
||||
fprintf(stderr, "Returned NULL\n");
|
||||
return CMD_SUCCESS;
|
||||
}
|
||||
|
||||
struct list *argvv = match_build_argv (command, element);
|
||||
fprintf(stderr, "num args: %d\n", argvv->count);
|
||||
|
||||
struct listnode *ln;
|
||||
struct graph_node *gn;
|
||||
for (ALL_LIST_ELEMENTS_RO(argvv,ln,gn)) {
|
||||
fprintf(stderr, "node text: %s\n", gn->text);
|
||||
if (gn->arg)
|
||||
fprintf(stderr, "node arg: %s\n", gn->arg);
|
||||
else
|
||||
fprintf(stderr, "No arg.\n");
|
||||
}
|
||||
|
||||
return CMD_SUCCESS;
|
||||
}
|
||||
|
||||
|
||||
void grammar_sandbox_init(void);
|
||||
void grammar_sandbox_init() {
|
||||
|
@ -72,4 +105,5 @@ void grammar_sandbox_init() {
|
|||
install_element (ENABLE_NODE, &grammar_test_cmd);
|
||||
install_element (ENABLE_NODE, &grammar_test_show_cmd);
|
||||
install_element (ENABLE_NODE, &grammar_test_match_cmd);
|
||||
install_element (ENABLE_NODE, &grammar_test_complete_cmd);
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue