File Manager

003 File Manager

Current Path: /usr/src/contrib/ldns

📁 ..
📄 Changelog(42.17 KB)
📄 LICENSE(1.47 KB)
📄 Makefile.in(77.62 KB)
📄 README(4.04 KB)
📄 README.git(858 B)
📄 README.snapshots(257 B)
📄 aclocal.m4(883 B)
📄 acx_nlnetlabs.m4(42.25 KB)
📄 ax_pkg_swig.m4(6.65 KB)
📄 ax_python_devel.m4(10.87 KB)
📄 buffer.c(3.74 KB)
📁 compat
📄 config.guess(42.74 KB)
📄 config.sub(35.31 KB)
📄 configure(560.43 KB)
📄 configure.ac(31.6 KB)
📄 dane.c(22.96 KB)
📄 dname.c(13.12 KB)
📄 dnssec.c(50.58 KB)
📄 dnssec_sign.c(40.7 KB)
📄 dnssec_verify.c(74.11 KB)
📄 dnssec_zone.c(27.93 KB)
📁 drill
📄 duration.c(8.63 KB)
📄 error.c(9.53 KB)
📄 freebsd-configure.sh(681 B)
📄 higher.c(7.56 KB)
📄 host2str.c(67.47 KB)
📄 host2wire.c(13.13 KB)
📄 install-sh(14.8 KB)
📄 keys.c(52.57 KB)
📁 ldns
📄 libdns.doxygen(103.99 KB)
📄 libdns.vim(19.14 KB)
📄 linktest.c(136 B)
📄 ltmain.sh(316.81 KB)
📁 m4
📄 net.c(23.2 KB)
📁 packaging
📄 packet.c(24.25 KB)
📄 parse.c(8.58 KB)
📄 radix.c(36.53 KB)
📄 rbtree.c(17.31 KB)
📄 rdata.c(16 KB)
📄 resolver.c(35.62 KB)
📄 rr.c(84.07 KB)
📄 rr_functions.c(8.59 KB)
📄 sha1.c(6.08 KB)
📄 sha2.c(29.86 KB)
📄 str2host.c(37.63 KB)
📄 tsig.c(11.98 KB)
📄 update.c(7.54 KB)
📄 util.c(17.68 KB)
📄 wire2host.c(12.71 KB)
📄 zone.c(6.17 KB)

Editing: higher.c

/*
 * higher.c
 *
 * Specify some higher level functions that would
 * be useful to would be developers
 *
 * a Net::DNS like library for C
 *
 * (c) NLnet Labs, 2004-2006
 *
 * See the file LICENSE for the license
 */

#include <ldns/config.h>

#include <ldns/ldns.h>

#ifdef HAVE_SSL
#include <openssl/ssl.h>
#include <openssl/sha.h>
#endif /* HAVE_SSL */

ldns_rr_list *
ldns_get_rr_list_addr_by_name(ldns_resolver *res, const ldns_rdf *name,
		ldns_rr_class c, uint16_t flags)
{
	ldns_pkt *pkt;
	ldns_rr_list *aaaa;
	ldns_rr_list *a;
	ldns_rr_list *result = NULL;
	ldns_rr_list *hostsfilenames;
	size_t i;
	uint8_t ip6;

a = NULL; 
	aaaa = NULL; 
	result = NULL;

if (!res) {
		return NULL;
	}
	if (ldns_rdf_get_type(name) != LDNS_RDF_TYPE_DNAME) {
		return NULL;
	}

ip6 = ldns_resolver_ip6(res); /* we use INET_ANY here, save
					 what was there */

ldns_resolver_set_ip6(res, LDNS_RESOLV_INETANY);
	
	hostsfilenames = ldns_get_rr_list_hosts_frm_file(NULL);
	for (i = 0; i < ldns_rr_list_rr_count(hostsfilenames); i++) {
		if (ldns_rdf_compare(name, 
					ldns_rr_owner(ldns_rr_list_rr(hostsfilenames, 
							i))) == 0) {
			if (!result) {
				result = ldns_rr_list_new();
			}
			ldns_rr_list_push_rr(result, 
					ldns_rr_clone(ldns_rr_list_rr(hostsfilenames, i)));
		}
	}
	ldns_rr_list_deep_free(hostsfilenames);

if (result) {
		return result;
	}

/* add the RD flags, because we want an answer */
	pkt = ldns_resolver_query(res, name, LDNS_RR_TYPE_AAAA, c, flags | LDNS_RD);
	if (pkt) {
		/* extract the data we need */
		aaaa = ldns_pkt_rr_list_by_type(pkt, LDNS_RR_TYPE_AAAA, 
			LDNS_SECTION_ANSWER);
		ldns_pkt_free(pkt);
	}

pkt = ldns_resolver_query(res, name, LDNS_RR_TYPE_A, c, flags | LDNS_RD);
	if (pkt) {
		/* extract the data we need */
		a = ldns_pkt_rr_list_by_type(pkt, LDNS_RR_TYPE_A, LDNS_SECTION_ANSWER);
		ldns_pkt_free(pkt);
	} 
	ldns_resolver_set_ip6(res, ip6);

if (aaaa && a) {
		result = ldns_rr_list_cat_clone(aaaa, a);
		ldns_rr_list_deep_free(aaaa);
		ldns_rr_list_deep_free(a);
		return result;
	}
	
	if (aaaa) {
		result = ldns_rr_list_clone(aaaa);
	}
	
	if (a) {
		result = ldns_rr_list_clone(a);
	}

ldns_rr_list_deep_free(aaaa);
	ldns_rr_list_deep_free(a);
	return result;
}

ldns_rr_list *
ldns_get_rr_list_name_by_addr(ldns_resolver *res, const ldns_rdf *addr,
		ldns_rr_class c, uint16_t flags)
{
	ldns_pkt *pkt;
	ldns_rr_list *names;
	ldns_rdf *name;

names = NULL;

if (!res || !addr) {
		return NULL;
	}

if (ldns_rdf_get_type(addr) != LDNS_RDF_TYPE_A &&
			ldns_rdf_get_type(addr) != LDNS_RDF_TYPE_AAAA) {
		return NULL;
	}

name = ldns_rdf_address_reverse(addr);
	
	/* add the RD flags, because we want an answer */
	pkt = ldns_resolver_query(res, name, LDNS_RR_TYPE_PTR, c, flags | LDNS_RD);
	ldns_rdf_deep_free(name);
	if (pkt) {
		/* extract the data we need */
		names = ldns_pkt_rr_list_by_type(pkt, 
				LDNS_RR_TYPE_PTR, LDNS_SECTION_ANSWER);
		ldns_pkt_free(pkt);
	}
	return names;
}

/* read a line, put it in a buffer, parse the buffer */
ldns_rr_list *
ldns_get_rr_list_hosts_frm_fp(FILE *fp)
{
	return ldns_get_rr_list_hosts_frm_fp_l(fp, NULL);
}

ldns_rr_list *
ldns_get_rr_list_hosts_frm_fp_l(FILE *fp, int *line_nr)
{
	ssize_t i, j;
	size_t cnt;
	char *line;
	char *word;
	char *addr;
	char *rr_str;
	ldns_buffer *linebuf;
	ldns_rr *rr;
	ldns_rr_list *list;
	ldns_rdf *tmp;
	bool ip6;
	ldns_status parse_result;

line = LDNS_XMALLOC(char, LDNS_MAX_LINELEN + 1);
	word = LDNS_XMALLOC(char, LDNS_MAX_LINELEN + 1);
	addr = LDNS_XMALLOC(char, LDNS_MAX_LINELEN + 1);
	rr_str = LDNS_XMALLOC(char, LDNS_MAX_LINELEN + 1);
	ip6 = false;
	list = ldns_rr_list_new();
	rr = NULL;
	if(!line || !word || !addr || !rr_str || !list) {
		LDNS_FREE(line);
		LDNS_FREE(word);
		LDNS_FREE(addr);
		LDNS_FREE(rr_str);
		ldns_rr_list_free(list);
		return NULL;
	}

for(i = ldns_fget_token_l(fp, line, "\n", LDNS_MAX_LINELEN, line_nr);
			i > 0; i = ldns_fget_token_l(fp, line, "\n", LDNS_MAX_LINELEN, line_nr)) {
		/* # is comment */
		if (line[0] == '#') {
			continue;
		}
		/* put it in a buffer for further processing */
		linebuf = LDNS_MALLOC(ldns_buffer);
		if(!linebuf) {
			LDNS_FREE(line);
			LDNS_FREE(word);
			LDNS_FREE(addr);
			LDNS_FREE(rr_str);
			ldns_rr_list_deep_free(list);
			return NULL;
		}

ldns_buffer_new_frm_data(linebuf, line, (size_t) i);
		for(cnt = 0, j = ldns_bget_token(linebuf, word, LDNS_PARSE_NO_NL, LDNS_MAX_LINELEN);
				j > 0;
				j = ldns_bget_token(linebuf, word, LDNS_PARSE_NO_NL, LDNS_MAX_LINELEN), cnt++) {
			if (cnt == 0) {
				/* the address */
				if ((tmp = ldns_rdf_new_frm_str(LDNS_RDF_TYPE_AAAA, 
								word))) {
					/* ip6 */
					ldns_rdf_deep_free(tmp);
					ip6 = true;
				} else {
					if ((tmp = ldns_rdf_new_frm_str(LDNS_RDF_TYPE_A, 
									word))) {
						/* ip4 */
						ldns_rdf_deep_free(tmp);
						ip6 = false;
					} else {
						/* kaput */
						break;
					}
				}
				(void)strlcpy(addr, word, LDNS_MAX_LINELEN+1);
			} else {
				/* Stop parsing line when a comment begins. */
				if (word[0] == '#')
					break;
				/* la al la la */
				if (ip6) {
					snprintf(rr_str, LDNS_MAX_LINELEN, 
						"%s IN AAAA %s", word, addr);
				} else {
					snprintf(rr_str, LDNS_MAX_LINELEN, 
						"%s IN A %s", word, addr);
				}
				parse_result = ldns_rr_new_frm_str(&rr, rr_str, 0, NULL, NULL);
				if (parse_result == LDNS_STATUS_OK && ldns_rr_owner(rr) && ldns_rr_rd_count(rr) > 0) {
					ldns_rr_list_push_rr(list, ldns_rr_clone(rr));
					ldns_rr_free(rr);
				}
			}
		}
		ldns_buffer_free(linebuf);
	}
	LDNS_FREE(line);
	LDNS_FREE(word);
	LDNS_FREE(addr);
	LDNS_FREE(rr_str);
	return list;
}

ldns_rr_list *
ldns_get_rr_list_hosts_frm_file(char *filename)
{
	ldns_rr_list *names;
	FILE *fp;

if (!filename) {
                fp = fopen(LDNS_RESOLV_HOSTS, "r");
        
        } else {
                fp = fopen(filename, "r");
        }
        if (!fp) {
                return NULL;
        }

names = ldns_get_rr_list_hosts_frm_fp(fp);
	fclose(fp);
	return names;
}

uint16_t
ldns_getaddrinfo(ldns_resolver *res, const ldns_rdf *node,
		ldns_rr_class c, ldns_rr_list **ret)
{
	ldns_rdf_type t;
	uint16_t names_found;
	ldns_resolver *r;
	ldns_status s;

t = ldns_rdf_get_type(node);
	names_found = 0;
	r = res;

if (res == NULL) {
		/* prepare a new resolver, using /etc/resolv.conf as a guide  */
		s = ldns_resolver_new_frm_file(&r, NULL);
		if (s != LDNS_STATUS_OK) {
			return 0;
		} 
	}

if (t == LDNS_RDF_TYPE_DNAME) {
		/* we're asked to query for a name */
		*ret = ldns_get_rr_list_addr_by_name(r, node, c, 0);
		names_found = ldns_rr_list_rr_count(*ret);
	}

if (t == LDNS_RDF_TYPE_A || t == LDNS_RDF_TYPE_AAAA) {
		/* an address */
		*ret = ldns_get_rr_list_name_by_addr(r, node, c, 0);
		names_found = ldns_rr_list_rr_count(*ret);
	}

if (res == NULL) {
		ldns_resolver_deep_free(r);
	}
	
	return names_found;
}

bool
ldns_nsec_type_check(const ldns_rr *nsec, ldns_rr_type t)
{
	switch (ldns_rr_get_type(nsec)) {
	case LDNS_RR_TYPE_NSEC	: if (ldns_rr_rd_count(nsec) < 2) {
					  return false;
				  }
				  return ldns_nsec_bitmap_covers_type(
						  ldns_rr_rdf(nsec, 1), t);

case LDNS_RR_TYPE_NSEC3	: if (ldns_rr_rd_count(nsec) < 6) {
					  return false;
				  }
				  return ldns_nsec_bitmap_covers_type(
						  ldns_rr_rdf(nsec, 5), t);

default			: return false;
	}
}

void
ldns_print_rr_rdf(FILE *fp, ldns_rr *r, int rdfnum, ...)
{
	int16_t rdf;
	ldns_rdf *rd;
	va_list va_rdf;
	va_start(va_rdf, rdfnum);

for (rdf = (int16_t)rdfnum; rdf != -1; rdf = (int16_t)va_arg(va_rdf, int)) 
	{
		rd = ldns_rr_rdf(r, rdf);
		if (!rd) {
			continue;
		} else {
			ldns_rdf_print(fp, rd);
			fprintf(fp, " "); /* not sure if we want to do this */
		}
	}
	va_end(va_rdf);
}

003 File Manager

Editing: higher.c

Upload File

Create Folder