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freebsd-skq/contrib/bsnmp/gensnmptree/gensnmptree.c
Hartmut Brandt d7eb6b4714 Virgin import of bsnmp 1.9
2005-04-26 16:43:22 +00:00

975 lines
21 KiB
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/*
* Copyright (c) 2001-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
*
* Copyright (c) 2004
* Hartmut Brandt.
* All rights reserved.
*
* Author: Harti Brandt <harti@freebsd.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Begemot: bsnmp/gensnmptree/gensnmptree.c,v 1.42 2005/04/26 16:26:19 brandt_h Exp $
*
* Generate OID table from table description.
*
* Syntax is:
* ---------
* file := tree | tree file
*
* tree := head elements ')'
*
* entry := head ':' index STRING elements ')'
*
* leaf := head TYPE STRING ACCESS ')'
*
* column := head TYPE ACCESS ')'
*
* head := '(' INT STRING
*
* elements := EMPTY | elements element
*
* element := tree | leaf | column
*
* index := TYPE | index TYPE
*
*/
#include <sys/types.h>
#include <sys/param.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <inttypes.h>
#include <errno.h>
#ifdef HAVE_ERR_H
#include <err.h>
#endif
#include <sys/queue.h>
#include "support.h"
#include "asn1.h"
#include "snmp.h"
#include "snmpagent.h"
/*
* Constant prefix for all OIDs
*/
static const asn_subid_t prefix[] = { 1, 3, 6 };
#define PREFIX_LEN (sizeof(prefix) / sizeof(prefix[0]))
u_int tree_size;
static const char *file_prefix = "";
static FILE *fp;
/* if true generate local include paths */
static int localincs = 0;
static const char usgtxt[] = "\
Generate SNMP tables. Copyright (c) 2001-2002 Fraunhofer Institute for\n\
Open Communication Systems (FhG Fokus). All rights reserved.\n\
usage: gensnmptree [-hel] [-p prefix] [name]...\n\
options:\n\
-h print this info\n\
-e extrace the named oids\n\
-l generate local include directives\n\
-p prefix prepend prefix to file and variable names\n\
";
/*
* A node in the OID tree
*/
enum ntype {
NODE_LEAF = 1,
NODE_TREE,
NODE_ENTRY,
NODE_COLUMN
};
enum {
FL_GET = 0x01,
FL_SET = 0x02,
};
struct node;
TAILQ_HEAD(node_list, node);
struct node {
enum ntype type;
asn_subid_t id; /* last element of OID */
char *name; /* name of node */
TAILQ_ENTRY(node) link;
u_int lno; /* starting line number */
u_int flags; /* allowed operations */
union {
struct tree {
struct node_list subs;
} tree;
struct entry {
uint32_t index; /* index for table entry */
char *func; /* function for tables */
struct node_list subs;
} entry;
struct leaf {
enum snmp_syntax syntax; /* syntax for this leaf */
char *func; /* function name */
} leaf;
struct column {
enum snmp_syntax syntax; /* syntax for this column */
} column;
} u;
};
struct func {
const char *name;
LIST_ENTRY(func) link;
};
static LIST_HEAD(, func) funcs = LIST_HEAD_INITIALIZER(funcs);
/************************************************************
*
* Allocate memory and panic just in the case...
*/
static void *
xalloc(size_t size)
{
void *ptr;
if ((ptr = malloc(size)) == NULL)
err(1, "allocing %zu bytes", size);
return (ptr);
}
/************************************************************
*
* Parsing input
*/
enum tok {
TOK_EOF = 0200, /* end-of-file seen */
TOK_NUM, /* number */
TOK_STR, /* string */
TOK_ACCESS, /* access operator */
TOK_TYPE, /* type operator */
};
static const struct {
const char *str;
enum tok tok;
u_int val;
} keywords[] = {
{ "GET", TOK_ACCESS, FL_GET },
{ "SET", TOK_ACCESS, FL_SET },
{ "NULL", TOK_TYPE, SNMP_SYNTAX_NULL },
{ "INTEGER", TOK_TYPE, SNMP_SYNTAX_INTEGER },
{ "INTEGER32", TOK_TYPE, SNMP_SYNTAX_INTEGER },
{ "UNSIGNED32", TOK_TYPE, SNMP_SYNTAX_GAUGE },
{ "OCTETSTRING", TOK_TYPE, SNMP_SYNTAX_OCTETSTRING },
{ "IPADDRESS", TOK_TYPE, SNMP_SYNTAX_IPADDRESS },
{ "OID", TOK_TYPE, SNMP_SYNTAX_OID },
{ "TIMETICKS", TOK_TYPE, SNMP_SYNTAX_TIMETICKS },
{ "COUNTER", TOK_TYPE, SNMP_SYNTAX_COUNTER },
{ "GAUGE", TOK_TYPE, SNMP_SYNTAX_GAUGE },
{ "COUNTER64", TOK_TYPE, SNMP_SYNTAX_COUNTER64 },
{ NULL, 0, 0 }
};
/* arbitrary upper limit on node names and function names */
#define MAXSTR 1000
char str[MAXSTR];
u_long val; /* integer values */
u_int lno = 1; /* current line number */
int all_cond; /* all conditions are true */
static void report(const char *, ...) __dead2 __printflike(1, 2);
static void report_node(const struct node *, const char *, ...)
__dead2 __printflike(2, 3);
/*
* Report an error and exit.
*/
static void
report(const char *fmt, ...)
{
va_list ap;
int c;
va_start(ap, fmt);
fprintf(stderr, "line %u: ", lno);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
fprintf(stderr, "context: \"");
while ((c = getchar()) != EOF && c != '\n')
fprintf(stderr, "%c", c);
fprintf(stderr, "\n");
va_end(ap);
exit(1);
}
static void
report_node(const struct node *np, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "line %u, node %s: ", np->lno, np->name);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
exit(1);
}
/*
* Return a fresh copy of the string constituting the current token.
*/
static char *
savetok(void)
{
return (strcpy(xalloc(strlen(str)+1), str));
}
/*
* Get the next token from input.
*/
static int
gettoken(void)
{
int c;
again:
/*
* Skip any whitespace before the next token
*/
while ((c = getchar()) != EOF) {
if (c == '\n')
lno++;
if (!isspace(c))
break;
}
if (c == EOF)
return (TOK_EOF);
if (!isascii(c))
report("unexpected character %#2x", (u_int)c);
/*
* Skip comments
*/
if (c == '#') {
while ((c = getchar()) != EOF) {
if (c == '\n') {
lno++;
goto again;
}
}
report("unexpected EOF in comment");
}
/*
* Single character tokens
*/
if (c == ')' || c == '(' || c == ':')
return (c);
/*
* Sort out numbers
*/
if (isdigit(c)) {
ungetc(c, stdin);
scanf("%lu", &val);
return (TOK_NUM);
}
/*
* So that has to be a string.
*/
if (isalpha(c) || c == '_') {
size_t n = 0;
str[n++] = c;
while ((c = getchar()) != EOF) {
if (!isalnum(c) && c != '_') {
ungetc(c, stdin);
break;
}
if (n == sizeof(str) - 1) {
str[n++] = '\0';
report("string too long '%s...'", str);
}
str[n++] = c;
}
str[n++] = '\0';
/*
* Keywords
*/
for (c = 0; keywords[c].str != NULL; c++)
if (strcmp(keywords[c].str, str) == 0) {
val = keywords[c].val;
return (keywords[c].tok);
}
return (TOK_STR);
}
if (isprint(c))
errx(1, "%u: unexpected character '%c'", lno, c);
else
errx(1, "%u: unexpected character 0x%02x", lno, (u_int)c);
}
/*
* Parse the next node (complete with all subnodes)
*/
static struct node *
parse(enum tok tok)
{
struct node *node;
struct node *sub;
u_int index_count;
node = xalloc(sizeof(struct node));
node->lno = lno;
if (tok != '(')
report("'(' expected at begin of node");
if (gettoken() != TOK_NUM)
report("node id expected after opening '('");
if (val > ASN_MAXID)
report("subid too large '%lu'", val);
node->id = (asn_subid_t)val;
if (gettoken() != TOK_STR)
report("node name expected after '(' ID");
node->name = savetok();
if ((tok = gettoken()) == TOK_TYPE) {
/* LEAF or COLUM */
u_int syntax = val;
if ((tok = gettoken()) == TOK_STR) {
/* LEAF */
node->type = NODE_LEAF;
node->u.leaf.func = savetok();
node->u.leaf.syntax = syntax;
tok = gettoken();
} else {
/* COLUMN */
node->type = NODE_COLUMN;
node->u.column.syntax = syntax;
}
while (tok != ')') {
if (tok != TOK_ACCESS)
report("access keyword or ')' expected");
node->flags |= (u_int)val;
tok = gettoken();
}
} else if (tok == ':') {
/* ENTRY */
node->type = NODE_ENTRY;
TAILQ_INIT(&node->u.entry.subs);
index_count = 0;
node->u.entry.index = 0;
while ((tok = gettoken()) == TOK_TYPE) {
if (index_count++ == SNMP_INDEXES_MAX)
report("too many table indexes");
node->u.entry.index |=
val << (SNMP_INDEX_SHIFT * index_count);
}
node->u.entry.index |= index_count;
if (index_count == 0)
report("need at least one index");
if (tok != TOK_STR)
report("function name expected");
node->u.entry.func = savetok();
tok = gettoken();
while (tok != ')') {
sub = parse(tok);
TAILQ_INSERT_TAIL(&node->u.entry.subs, sub, link);
tok = gettoken();
}
} else {
/* subtree */
node->type = NODE_TREE;
TAILQ_INIT(&node->u.tree.subs);
while (tok != ')') {
sub = parse(tok);
TAILQ_INSERT_TAIL(&node->u.tree.subs, sub, link);
tok = gettoken();
}
}
return (node);
}
/*
* Generate the C-code table part for one node.
*/
static void
gen_node(struct node *np, struct asn_oid *oid, u_int idx, const char *func)
{
u_int n;
struct node *sub;
u_int syntax;
if (oid->len == ASN_MAXOIDLEN)
report_node(np, "OID too long");
oid->subs[oid->len++] = np->id;
if (np->type == NODE_TREE) {
TAILQ_FOREACH(sub, &np->u.tree.subs, link)
gen_node(sub, oid, 0, NULL);
oid->len--;
return;
}
if (np->type == NODE_ENTRY) {
TAILQ_FOREACH(sub, &np->u.entry.subs, link)
gen_node(sub, oid, np->u.entry.index, np->u.entry.func);
oid->len--;
return;
}
/* leaf or column */
if ((np->flags & (FL_GET|FL_SET)) == 0) {
oid->len--;
return;
}
fprintf(fp, " {{ %u, {", oid->len);
for (n = 0; n < oid->len; n++)
fprintf(fp, " %u,", oid->subs[n]);
fprintf(fp, " }}, \"%s\", ", np->name);
if (np->type == NODE_COLUMN) {
syntax = np->u.column.syntax;
fprintf(fp, "SNMP_NODE_COLUMN, ");
} else {
syntax = np->u.leaf.syntax;
fprintf(fp, "SNMP_NODE_LEAF, ");
}
switch (syntax) {
case SNMP_SYNTAX_NULL:
fprintf(fp, "SNMP_SYNTAX_NULL, ");
break;
case SNMP_SYNTAX_INTEGER:
fprintf(fp, "SNMP_SYNTAX_INTEGER, ");
break;
case SNMP_SYNTAX_OCTETSTRING:
fprintf(fp, "SNMP_SYNTAX_OCTETSTRING, ");
break;
case SNMP_SYNTAX_IPADDRESS:
fprintf(fp, "SNMP_SYNTAX_IPADDRESS, ");
break;
case SNMP_SYNTAX_OID:
fprintf(fp, "SNMP_SYNTAX_OID, ");
break;
case SNMP_SYNTAX_TIMETICKS:
fprintf(fp, "SNMP_SYNTAX_TIMETICKS, ");
break;
case SNMP_SYNTAX_COUNTER:
fprintf(fp, "SNMP_SYNTAX_COUNTER, ");
break;
case SNMP_SYNTAX_GAUGE:
fprintf(fp, "SNMP_SYNTAX_GAUGE, ");
break;
case SNMP_SYNTAX_COUNTER64:
fprintf(fp, "SNMP_SYNTAX_COUNTER64, ");
break;
case SNMP_SYNTAX_NOSUCHOBJECT:
case SNMP_SYNTAX_NOSUCHINSTANCE:
case SNMP_SYNTAX_ENDOFMIBVIEW:
abort();
}
if (np->type == NODE_COLUMN)
fprintf(fp, "%s, ", func);
else
fprintf(fp, "%s, ", np->u.leaf.func);
fprintf(fp, "0");
if (np->flags & FL_SET)
fprintf(fp, "|SNMP_NODE_CANSET");
fprintf(fp, ", %#x, NULL, NULL },\n", idx);
oid->len--;
return;
}
/*
* Generate the header file with the function declarations.
*/
static void
gen_header(struct node *np, u_int oidlen, const char *func)
{
char f[MAXSTR + 4];
struct node *sub;
struct func *ptr;
oidlen++;
if (np->type == NODE_TREE) {
TAILQ_FOREACH(sub, &np->u.tree.subs, link)
gen_header(sub, oidlen, NULL);
return;
}
if (np->type == NODE_ENTRY) {
TAILQ_FOREACH(sub, &np->u.entry.subs, link)
gen_header(sub, oidlen, np->u.entry.func);
return;
}
if((np->flags & (FL_GET|FL_SET)) == 0)
return;
if (np->type == NODE_COLUMN) {
if (func == NULL)
errx(1, "column without function (%s) - probably "
"outside of a table", np->name);
sprintf(f, "%s", func);
} else
sprintf(f, "%s", np->u.leaf.func);
LIST_FOREACH(ptr, &funcs, link)
if (strcmp(ptr->name, f) == 0)
break;
if (ptr == NULL) {
ptr = xalloc(sizeof(*ptr));
ptr->name = strcpy(xalloc(strlen(f)+1), f);
LIST_INSERT_HEAD(&funcs, ptr, link);
fprintf(fp, "int %s(struct snmp_context *, "
"struct snmp_value *, u_int, u_int, "
"enum snmp_op);\n", f);
}
fprintf(fp, "# define LEAF_%s %u\n", np->name, np->id);
}
/*
* Generate the OID table.
*/
static void
gen_table(struct node *node)
{
struct asn_oid oid;
fprintf(fp, "#include <sys/types.h>\n");
fprintf(fp, "#include <stdio.h>\n");
fprintf(fp, "#include <stdint.h>\n");
if (localincs) {
fprintf(fp, "#include \"asn1.h\"\n");
fprintf(fp, "#include \"snmp.h\"\n");
fprintf(fp, "#include \"snmpagent.h\"\n");
} else {
fprintf(fp, "#include <bsnmp/asn1.h>\n");
fprintf(fp, "#include <bsnmp/snmp.h>\n");
fprintf(fp, "#include <bsnmp/snmpagent.h>\n");
}
fprintf(fp, "#include \"%stree.h\"\n", file_prefix);
fprintf(fp, "\n");
fprintf(fp, "const struct snmp_node %sctree[] = {\n", file_prefix);
oid.len = PREFIX_LEN;
memcpy(oid.subs, prefix, sizeof(prefix));
gen_node(node, &oid, 0, NULL);
fprintf(fp, "};\n\n");
}
static void
print_syntax(u_int syntax)
{
u_int i;
for (i = 0; keywords[i].str != NULL; i++)
if (keywords[i].tok == TOK_TYPE &&
keywords[i].val == syntax) {
printf(" %s", keywords[i].str);
return;
}
abort();
}
/*
* Generate a tree definition file
*/
static void
gen_tree(const struct node *np, int level)
{
const struct node *sp;
u_int i;
printf("%*s(%u %s", 2 * level, "", np->id, np->name);
switch (np->type) {
case NODE_LEAF:
print_syntax(np->u.leaf.syntax);
printf(" %s%s%s)\n", np->u.leaf.func,
(np->flags & FL_GET) ? " GET" : "",
(np->flags & FL_SET) ? " SET" : "");
break;
case NODE_TREE:
if (TAILQ_EMPTY(&np->u.tree.subs)) {
printf(")\n");
} else {
printf("\n");
TAILQ_FOREACH(sp, &np->u.tree.subs, link)
gen_tree(sp, level + 1);
printf("%*s)\n", 2 * level, "");
}
break;
case NODE_ENTRY:
printf(" :");
for (i = 0; i < SNMP_INDEX_COUNT(np->u.entry.index); i++)
print_syntax(SNMP_INDEX(np->u.entry.index, i));
printf(" %s\n", np->u.entry.func);
TAILQ_FOREACH(sp, &np->u.entry.subs, link)
gen_tree(sp, level + 1);
printf("%*s)\n", 2 * level, "");
break;
case NODE_COLUMN:
print_syntax(np->u.column.syntax);
printf("%s%s)\n", (np->flags & FL_GET) ? " GET" : "",
(np->flags & FL_SET) ? " SET" : "");
break;
}
}
static int
extract(const struct node *np, struct asn_oid *oid, const char *obj,
const struct asn_oid *idx, const char *iname)
{
struct node *sub;
u_long n;
if (oid->len == ASN_MAXOIDLEN)
report_node(np, "OID too long");
oid->subs[oid->len++] = np->id;
if (strcmp(obj, np->name) == 0) {
if (oid->len + idx->len >= ASN_MAXOIDLEN)
report_node(np, "OID too long");
fprintf(fp, "#define OID_%s%s\t%u\n", np->name,
iname ? iname : "", np->id);
fprintf(fp, "#define OIDLEN_%s%s\t%u\n", np->name,
iname ? iname : "", oid->len + idx->len);
fprintf(fp, "#define OIDX_%s%s\t{ %u, {", np->name,
iname ? iname : "", oid->len + idx->len);
for (n = 0; n < oid->len; n++)
fprintf(fp, " %u,", oid->subs[n]);
for (n = 0; n < idx->len; n++)
fprintf(fp, " %u,", idx->subs[n]);
fprintf(fp, " } }\n");
return (0);
}
if (np->type == NODE_TREE) {
TAILQ_FOREACH(sub, &np->u.tree.subs, link)
if (!extract(sub, oid, obj, idx, iname))
return (0);
} else if (np->type == NODE_ENTRY) {
TAILQ_FOREACH(sub, &np->u.entry.subs, link)
if (!extract(sub, oid, obj, idx, iname))
return (0);
}
oid->len--;
return (1);
}
static int
gen_extract(const struct node *root, char *object)
{
struct asn_oid oid;
struct asn_oid idx;
char *s, *e, *end, *iname;
u_long ul;
int ret;
/* look whether the object to extract has an index part */
idx.len = 0;
iname = NULL;
s = strchr(object, '.');
if (s != NULL) {
iname = malloc(strlen(s) + 1);
if (iname == NULL)
err(1, "cannot allocated index");
strcpy(iname, s);
for (e = iname; *e != '\0'; e++)
if (*e == '.')
*e = '_';
*s++ = '\0';
while (s != NULL) {
if (*s == '\0')
errx(1, "bad index syntax");
if ((e = strchr(s, '.')) != NULL)
*e++ = '\0';
errno = 0;
ul = strtoul(s, &end, 0);
if (*end != '\0')
errx(1, "bad index syntax '%s'", end);
if (errno != 0)
err(1, "bad index syntax");
if (idx.len == ASN_MAXOIDLEN)
errx(1, "index oid too large");
idx.subs[idx.len++] = ul;
s = e;
}
}
oid.len = PREFIX_LEN;
memcpy(oid.subs, prefix, sizeof(prefix));
ret = extract(root, &oid, object, &idx, iname);
if (iname != NULL)
free(iname);
return (ret);
}
static void
check_sub_order(const struct node *np, const struct node_list *subs)
{
int first;
const struct node *sub;
asn_subid_t maxid = 0;
/* ensure, that subids are ordered */
first = 1;
TAILQ_FOREACH(sub, subs, link) {
if (!first && sub->id <= maxid)
report_node(np, "subids not ordered at %s", sub->name);
maxid = sub->id;
first = 0;
}
}
/*
* Do some sanity checks on the tree definition and do some computations.
*/
static void
check_tree(struct node *np)
{
struct node *sub;
if (np->type == NODE_LEAF || np->type == NODE_COLUMN) {
if ((np->flags & (FL_GET|FL_SET)) != 0)
tree_size++;
return;
}
if (np->type == NODE_ENTRY) {
check_sub_order(np, &np->u.entry.subs);
/* ensure all subnodes are columns */
TAILQ_FOREACH(sub, &np->u.entry.subs, link) {
if (sub->type != NODE_COLUMN)
report_node(np, "entry subnode '%s' is not "
"a column", sub->name);
check_tree(sub);
}
} else {
check_sub_order(np, &np->u.tree.subs);
TAILQ_FOREACH(sub, &np->u.tree.subs, link)
check_tree(sub);
}
}
static void
merge_subs(struct node_list *s1, struct node_list *s2)
{
struct node *n1, *n2;
while (!TAILQ_EMPTY(s2)) {
n2 = TAILQ_FIRST(s2);
TAILQ_REMOVE(s2, n2, link);
TAILQ_FOREACH(n1, s1, link)
if (n1->id >= n2->id)
break;
if (n1 == NULL)
TAILQ_INSERT_TAIL(s1, n2, link);
else if (n1->id > n2->id)
TAILQ_INSERT_BEFORE(n1, n2, link);
else {
if (n1->type == NODE_TREE && n2->type == NODE_TREE) {
if (strcmp(n1->name, n2->name) != 0)
errx(1, "trees to merge must have "
"same name '%s' '%s'", n1->name,
n2->name);
merge_subs(&n1->u.tree.subs, &n2->u.tree.subs);
free(n2);
} else if (n1->type == NODE_ENTRY &&
n2->type == NODE_ENTRY) {
if (strcmp(n1->name, n2->name) != 0)
errx(1, "entries to merge must have "
"same name '%s' '%s'", n1->name,
n2->name);
if (n1->u.entry.index != n2->u.entry.index)
errx(1, "entries to merge must have "
"same index '%s'", n1->name);
if (strcmp(n1->u.entry.func,
n2->u.entry.func) != 0)
errx(1, "entries to merge must have "
"same op '%s'", n1->name);
merge_subs(&n1->u.entry.subs,
&n2->u.entry.subs);
free(n2);
} else
errx(1, "entities to merge must be both "
"trees or both entries: %s, %s",
n1->name, n2->name);
}
}
}
static void
merge(struct node *root, struct node *t)
{
/* both must be trees */
if (root->type != NODE_TREE)
errx(1, "root is not a tree");
if (t->type != NODE_TREE)
errx(1, "can merge only with tree");
if (root->id != t->id)
errx(1, "trees to merge must have same id");
merge_subs(&root->u.tree.subs, &t->u.tree.subs);
}
int
main(int argc, char *argv[])
{
int do_extract = 0;
int do_tree = 0;
int opt;
struct node *root;
char fname[MAXPATHLEN + 1];
int tok;
while ((opt = getopt(argc, argv, "help:t")) != EOF)
switch (opt) {
case 'h':
fprintf(stderr, "%s", usgtxt);
exit(0);
case 'e':
do_extract = 1;
break;
case 'l':
localincs = 1;
break;
case 'p':
file_prefix = optarg;
if (strlen(file_prefix) + strlen("tree.c") >
MAXPATHLEN)
errx(1, "prefix too long");
break;
case 't':
do_tree = 1;
break;
}
if (do_extract && do_tree)
errx(1, "conflicting options -e and -t");
if (!do_extract && argc != optind)
errx(1, "no arguments allowed");
if (do_extract && argc == optind)
errx(1, "no objects specified");
root = parse(gettoken());
while ((tok = gettoken()) != TOK_EOF)
merge(root, parse(tok));
check_tree(root);
if (do_extract) {
fp = stdout;
while (optind < argc) {
if (gen_extract(root, argv[optind]))
errx(1, "object not found: %s", argv[optind]);
optind++;
}
return (0);
}
if (do_tree) {
gen_tree(root, 0);
return (0);
}
sprintf(fname, "%stree.h", file_prefix);
if ((fp = fopen(fname, "w")) == NULL)
err(1, "%s: ", fname);
gen_header(root, PREFIX_LEN, NULL);
fprintf(fp, "#define %sCTREE_SIZE %u\n", file_prefix, tree_size);
fprintf(fp, "extern const struct snmp_node %sctree[];\n", file_prefix);
fclose(fp);
sprintf(fname, "%stree.c", file_prefix);
if ((fp = fopen(fname, "w")) == NULL)
err(1, "%s: ", fname);
gen_table(root);
fclose(fp);
return (0);
}
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