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-rw-r--r--src/utils/knsupdate/knsupdate_exec.c1053
-rw-r--r--src/utils/knsupdate/knsupdate_exec.h25
-rw-r--r--src/utils/knsupdate/knsupdate_interactive.c177
-rw-r--r--src/utils/knsupdate/knsupdate_interactive.h26
-rw-r--r--src/utils/knsupdate/knsupdate_main.c46
-rw-r--r--src/utils/knsupdate/knsupdate_params.c304
-rw-r--r--src/utils/knsupdate/knsupdate_params.h72
7 files changed, 1703 insertions, 0 deletions
diff --git a/src/utils/knsupdate/knsupdate_exec.c b/src/utils/knsupdate/knsupdate_exec.c
new file mode 100644
index 0000000..f2a432a
--- /dev/null
+++ b/src/utils/knsupdate/knsupdate_exec.c
@@ -0,0 +1,1053 @@
+/* Copyright (C) 2023 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include "libdnssec/random.h"
+#include "utils/knsupdate/knsupdate_exec.h"
+#include "utils/knsupdate/knsupdate_interactive.h"
+#include "utils/common/exec.h"
+#include "utils/common/msg.h"
+#include "utils/common/netio.h"
+#include "utils/common/params.h"
+#include "utils/common/sign.h"
+#include "utils/common/token.h"
+#include "libknot/libknot.h"
+#include "contrib/ctype.h"
+#include "contrib/getline.h"
+#include "contrib/string.h"
+#include "contrib/strtonum.h"
+#include "contrib/openbsd/strlcpy.h"
+
+/* Declarations of cmd parse functions. */
+typedef int (*cmd_handle_f)(const char *lp, knsupdate_params_t *params);
+int cmd_add(const char* lp, knsupdate_params_t *params);
+int cmd_answer(const char* lp, knsupdate_params_t *params);
+int cmd_class(const char* lp, knsupdate_params_t *params);
+int cmd_debug(const char* lp, knsupdate_params_t *params);
+int cmd_del(const char* lp, knsupdate_params_t *params);
+int cmd_gsstsig(const char* lp, knsupdate_params_t *params);
+int cmd_key(const char* lp, knsupdate_params_t *params);
+int cmd_local(const char* lp, knsupdate_params_t *params);
+int cmd_nxdomain(const char *lp, knsupdate_params_t *params);
+int cmd_nxrrset(const char *lp, knsupdate_params_t *params);
+int cmd_oldgsstsig(const char* lp, knsupdate_params_t *params);
+int cmd_origin(const char* lp, knsupdate_params_t *params);
+int cmd_prereq(const char* lp, knsupdate_params_t *params);
+int cmd_exit(const char* lp, knsupdate_params_t *params);
+int cmd_realm(const char* lp, knsupdate_params_t *params);
+int cmd_send(const char* lp, knsupdate_params_t *params);
+int cmd_server(const char* lp, knsupdate_params_t *params);
+int cmd_show(const char* lp, knsupdate_params_t *params);
+int cmd_ttl(const char* lp, knsupdate_params_t *params);
+int cmd_update(const char* lp, knsupdate_params_t *params);
+int cmd_yxdomain(const char *lp, knsupdate_params_t *params);
+int cmd_yxrrset(const char *lp, knsupdate_params_t *params);
+int cmd_zone(const char* lp, knsupdate_params_t *params);
+
+/* Sorted list of commands.
+ * This way we could identify command byte-per-byte and
+ * cancel early if the next is lexicographically greater.
+ */
+const char* knsupdate_cmd_array[] = {
+ "\x3" "add",
+ "\x6" "answer",
+ "\x5" "class", /* {classname} */
+ "\x5" "debug",
+ "\x3" "del",
+ "\x6" "delete",
+ "\x4" "exit",
+ "\x7" "gsstsig",
+ "\x3" "key", /* {[alg:]name} {secret} */
+ "\x5" "local", /* {address} [port] */
+ "\x8" "nxdomain",
+ "\x7" "nxrrset",
+ "\xa" "oldgsstsig",
+ "\x6" "origin", /* {name} */
+ "\x6" "prereq", /* (nx|yx)(domain|rrset) {domain-name} ... */
+ "\x4" "quit",
+ "\x5" "realm", /* {[realm_name]} */
+ "\x4" "send",
+ "\x6" "server", /* {servername} [port] */
+ "\x4" "show",
+ "\x3" "ttl", /* {seconds} */
+ "\x6" "update", /* (add|delete) {domain-name} ... */
+ "\x8" "yxdomain",
+ "\x7" "yxrrset",
+ "\x4" "zone", /* {zonename} */
+ NULL
+};
+
+cmd_handle_f cmd_handle[] = {
+ cmd_add,
+ cmd_answer,
+ cmd_class,
+ cmd_debug,
+ cmd_del,
+ cmd_del, /* delete/del synonyms */
+ cmd_exit,
+ cmd_gsstsig,
+ cmd_key,
+ cmd_local,
+ cmd_nxdomain,
+ cmd_nxrrset,
+ cmd_oldgsstsig,
+ cmd_origin,
+ cmd_prereq,
+ cmd_exit, /* exit/quit synonyms */
+ cmd_realm,
+ cmd_send,
+ cmd_server,
+ cmd_show,
+ cmd_ttl,
+ cmd_update,
+ cmd_yxdomain,
+ cmd_yxrrset,
+ cmd_zone,
+};
+
+/* {prereq} command table. */
+const char* pq_array[] = {
+ "\x8" "nxdomain",
+ "\x7" "nxrrset",
+ "\x8" "yxdomain",
+ "\x7" "yxrrset",
+ NULL
+};
+
+enum {
+ PQ_NXDOMAIN = 0,
+ PQ_NXRRSET,
+ PQ_YXDOMAIN,
+ PQ_YXRRSET
+};
+
+/* RR parser flags */
+enum {
+ PARSE_NODEFAULT = 1 << 0, /* Do not fill defaults. */
+ PARSE_NAMEONLY = 1 << 1, /* Parse only name. */
+ PARSE_NOTTL = 1 << 2 /* Ignore TTL item. */
+};
+
+static bool dname_isvalid(const char *lp)
+{
+ knot_dname_t *dn = knot_dname_from_str_alloc(lp);
+ if (dn == NULL) {
+ return false;
+ }
+ knot_dname_free(dn, NULL);
+ return true;
+}
+
+/* This is probably redundant, but should be a bit faster so let's keep it. */
+static int parse_full_rr(zs_scanner_t *s, const char* lp)
+{
+ if (zs_set_input_string(s, lp, strlen(lp)) != 0 ||
+ zs_parse_all(s) != 0) {
+ ERR("invalid record (%s)", zs_strerror(s->error.code));
+ return KNOT_EPARSEFAIL;
+ }
+
+ /* Class must not differ from specified. */
+ if (s->r_class != s->default_class) {
+ char cls_s[16] = "";
+ knot_rrclass_to_string(s->default_class, cls_s, sizeof(cls_s));
+ ERR("class mismatch '%s'", cls_s);
+ return KNOT_EPARSEFAIL;
+ }
+
+ return KNOT_EOK;
+}
+
+static int parse_partial_rr(zs_scanner_t *s, const char *lp, unsigned flags)
+{
+ /* Extract owner. */
+ size_t len = strcspn(lp, SEP_CHARS);
+ char *owner_str = calloc(1, len + 2); // 2 ~ ('.' + '\0')
+ memcpy(owner_str, lp, len);
+
+ /* Make dname FQDN if it isn't. */
+ bool fqdn = true;
+ if (owner_str[len - 1] != '.') {
+ owner_str[len] = '.';
+ fqdn = false;
+ }
+
+ knot_dname_t *owner = knot_dname_from_str_alloc(owner_str);
+ free(owner_str);
+ if (owner == NULL) {
+ return KNOT_ENOMEM;
+ }
+
+ s->r_owner_length = knot_dname_size(owner);
+ memcpy(s->r_owner, owner, s->r_owner_length);
+ knot_dname_free(owner, NULL);
+
+ /* Append origin if not FQDN. */
+ if (!fqdn) {
+ s->r_owner_length--;
+ memcpy(s->r_owner + s->r_owner_length, s->zone_origin,
+ s->zone_origin_length);
+ s->r_owner_length += s->zone_origin_length;
+ }
+
+ lp = tok_skipspace(lp + len);
+
+ /* Initialize */
+ s->r_type = KNOT_RRTYPE_ANY;
+ s->r_class = s->default_class;
+ s->r_data_length = 0;
+ if (flags & PARSE_NODEFAULT) {
+ s->r_ttl = 0;
+ } else {
+ s->r_ttl = s->default_ttl;
+ }
+
+ /* Parse only name? */
+ if (flags & PARSE_NAMEONLY) {
+ if (*lp != '\0') {
+ WARN("ignoring input data '%s'", lp);
+ }
+ return KNOT_EOK;
+ }
+
+ /* Now there could be [ttl] [class] [type [data...]]. */
+ char *np = NULL;
+ long ttl = strtol(lp, &np, 10);
+ if (ttl >= 0 && np && (*np == '\0' || is_space(*np))) {
+ DBG("%s: parsed ttl=%lu", __func__, ttl);
+ if (flags & PARSE_NOTTL) {
+ WARN("ignoring TTL value '%ld'", ttl);
+ } else {
+ s->r_ttl = ttl;
+ }
+ lp = tok_skipspace(np);
+ }
+
+ uint16_t num;
+ char *buff = NULL;
+ char *cls = NULL;
+ char *type = NULL;
+
+ /* Try to find class. */
+ len = strcspn(lp, SEP_CHARS);
+ if (len > 0) {
+ buff = strndup(lp, len);
+ }
+
+ if (knot_rrclass_from_string(buff, &num) == 0) {
+ /* Class must not differ from specified. */
+ if (num != s->default_class) {
+ ERR("class mismatch '%s'", buff);
+ free(buff);
+ return KNOT_EPARSEFAIL;
+ }
+ cls = buff;
+ buff = NULL;
+ s->r_class = num;
+ DBG("%s: parsed class=%u '%s'", __func__, s->r_class, cls);
+ lp = tok_skipspace(lp + len);
+ }
+
+ /* Try to parser type. */
+ if (cls != NULL) {
+ len = strcspn(lp, SEP_CHARS);
+ if (len > 0) {
+ buff = strndup(lp, len);
+ }
+ }
+ if (knot_rrtype_from_string(buff, &num) == 0) {
+ type = buff;
+ buff = NULL;
+ s->r_type = num;
+ DBG("%s: parsed type=%u '%s'", __func__, s->r_type, type);
+ lp = tok_skipspace(lp + len);
+ }
+
+ free(buff);
+
+ /* Remainder */
+ if (*lp == '\0') {
+ free(cls);
+ free(type);
+ return KNOT_EOK;
+ }
+
+ /* Need to parse rdata, synthetize input. */
+ char *rr = sprintf_alloc(" %u IN %s %s\n", s->r_ttl, type, lp);
+ free(cls);
+ free(type);
+ if (rr == NULL) {
+ return KNOT_ENOMEM;
+ }
+ if (zs_set_input_string(s, rr, strlen(rr)) != 0 ||
+ zs_parse_all(s) != 0) {
+ ERR("invalid rdata (%s)", zs_strerror(s->error.code));
+ return KNOT_EPARSEFAIL;
+ }
+ free(rr);
+
+ return KNOT_EOK;
+}
+
+static srv_info_t *parse_host(const char *lp, const char* default_port)
+{
+ /* Extract server address. */
+ srv_info_t *srv = NULL;
+ size_t len = strcspn(lp, SEP_CHARS);
+ char *addr = strndup(lp, len);
+ if (!addr) return NULL;
+ DBG("%s: parsed addr: %s", __func__, addr);
+
+ /* Store port/service if present. */
+ lp = tok_skipspace(lp + len);
+ if (*lp == '\0') {
+ srv = srv_info_create(addr, default_port);
+ free(addr);
+ return srv;
+ }
+
+ len = strcspn(lp, SEP_CHARS);
+ char *port = strndup(lp, len);
+ if (!port) {
+ free(addr);
+ return NULL;
+ }
+ DBG("%s: parsed port: %s", __func__, port);
+
+ /* Create server struct. */
+ srv = srv_info_create(addr, port);
+ free(addr);
+ free(port);
+ return srv;
+}
+
+/* Append parsed RRSet to list. */
+static int rr_list_append(zs_scanner_t *s, list_t *target_list, knot_mm_t *mm)
+{
+ knot_rrset_t *rr = knot_rrset_new(s->r_owner, s->r_type, s->r_class,
+ s->r_ttl, NULL);
+ if (!rr) {
+ DBG("%s: failed to create rrset", __func__);
+ return KNOT_ENOMEM;
+ }
+
+ /* Create RDATA. */
+ int ret = knot_rrset_add_rdata(rr, s->r_data, s->r_data_length, NULL);
+ if (ret != KNOT_EOK) {
+ DBG("%s: failed to set rrset from wire (%s)",
+ __func__, knot_strerror(ret));
+ knot_rrset_free(rr, NULL);
+ return ret;
+ }
+
+ if (ptrlist_add(target_list, rr, mm) == NULL) {
+ knot_rrset_free(rr, NULL);
+ return KNOT_ENOMEM;
+ }
+
+ return KNOT_EOK;
+}
+
+/*! \brief Write RRSet list to packet section. */
+static int rr_list_to_packet(knot_pkt_t *dst, list_t *list)
+{
+ assert(dst != NULL);
+ assert(list != NULL);
+
+ ptrnode_t *node;
+ WALK_LIST(node, *list) {
+ int ret = knot_pkt_put(dst, KNOT_COMPR_HINT_NONE,
+ (knot_rrset_t *)node->d, 0);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+ }
+
+ return KNOT_EOK;
+}
+
+/*! \brief Build UPDATE query. */
+static int build_query(knsupdate_params_t *params)
+{
+ /* Clear old query. */
+ knot_pkt_t *query = params->query;
+ knot_pkt_clear(query);
+
+ /* Write question. */
+ knot_wire_set_id(query->wire, dnssec_random_uint16_t());
+ knot_wire_set_opcode(query->wire, KNOT_OPCODE_UPDATE);
+ knot_dname_t *qname = knot_dname_from_str_alloc(params->zone);
+ int ret = knot_pkt_put_question(query, qname, params->class_num,
+ KNOT_RRTYPE_SOA);
+ knot_dname_free(qname, NULL);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ /* Now, PREREQ => ANSWER section. */
+ ret = knot_pkt_begin(query, KNOT_ANSWER);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ /* Write PREREQ. */
+ ret = rr_list_to_packet(query, &params->prereq_list);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ /* Now, UPDATE data => AUTHORITY section. */
+ ret = knot_pkt_begin(query, KNOT_AUTHORITY);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ /* Write UPDATE data. */
+ return rr_list_to_packet(query, &params->update_list);
+}
+
+static int pkt_sendrecv(knsupdate_params_t *params)
+{
+ net_t net;
+ int ret;
+
+ ret = net_init(params->srcif,
+ params->server,
+ get_iptype(params->ip, params->server),
+ get_socktype(params->protocol, KNOT_RRTYPE_SOA),
+ params->wait,
+ NET_FLAGS_NONE,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ &net);
+ if (ret != KNOT_EOK) {
+ return -1;
+ }
+
+ ret = net_connect(&net);
+ DBG("%s: send_msg = %d", __func__, net.sockfd);
+ if (ret != KNOT_EOK) {
+ net_clean(&net);
+ return -1;
+ }
+
+ ret = net_send(&net, params->query->wire, params->query->size);
+ if (ret != KNOT_EOK) {
+ net_close(&net);
+ net_clean(&net);
+ return -1;
+ }
+
+ /* Clear response buffer. */
+ knot_pkt_clear(params->answer);
+
+ /* Wait for reception. */
+ int rb = net_receive(&net, params->answer->wire, params->answer->max_size);
+ DBG("%s: receive_msg = %d", __func__, rb);
+ if (rb <= 0) {
+ net_close(&net);
+ net_clean(&net);
+ return -1;
+ } else {
+ params->answer->size = rb;
+ }
+
+ net_close(&net);
+ net_clean(&net);
+
+ return rb;
+}
+
+int knsupdate_process_line(const char *line, knsupdate_params_t *params)
+{
+ /* Check for empty line or comment. */
+ if (line[0] == '\0' || line[0] == ';') {
+ return KNOT_EOK;
+ }
+
+ int ret = tok_find(line, knsupdate_cmd_array);
+ if (ret < 0) {
+ return ret; /* Syntax error - do nothing. */
+ }
+
+ const char *cmd = knsupdate_cmd_array[ret];
+ const char *val = tok_skipspace(line + TOK_L(cmd));
+ params->parser.error.counter = 0; /* Reset possible previous error. */
+ ret = cmd_handle[ret](val, params);
+ if (ret != KNOT_EOK) {
+ DBG("operation '%s' failed (%s) on line '%s'",
+ TOK_S(cmd), knot_strerror(ret), line);
+ }
+
+ return ret;
+}
+
+static bool is_terminal(FILE *file)
+{
+ int fd = fileno(file);
+ assert(fd >= 0);
+ return isatty(fd);
+}
+
+static int process_lines(knsupdate_params_t *params, FILE *input)
+{
+ char *buf = NULL;
+ size_t buflen = 0;
+ if(is_terminal(input)) {
+ return interactive_loop(params);
+ }
+ int ret = KNOT_EOK;
+
+ /* Process lines. */
+ while (!params->stop && knot_getline(&buf, &buflen, input) != -1) {
+ /* Remove leading and trailing white space. */
+ char *line = strstrip(buf);
+ ret = knsupdate_process_line(line, params);
+ memset(line, 0, strlen(line));
+ free(line);
+ if (ret != KNOT_EOK) {
+ break;
+ }
+ }
+
+ if (buf != NULL) {
+ memset(buf, 0, buflen);
+ free(buf);
+ }
+
+ return ret;
+}
+
+int knsupdate_exec(knsupdate_params_t *params)
+{
+ if (!params) {
+ return KNOT_EINVAL;
+ }
+
+ int ret = KNOT_EOK;
+
+ /* If no file specified, enter the interactive mode. */
+ if (EMPTY_LIST(params->qfiles)) {
+ return process_lines(params, stdin);
+ }
+
+ /* Read from each specified file. */
+ ptrnode_t *n;
+ WALK_LIST(n, params->qfiles) {
+ const char *filename = (const char*)n->d;
+ if (strcmp(filename, "-") == 0) {
+ ret = process_lines(params, stdin);
+ if (ret != KNOT_EOK) {
+ break;
+ }
+ continue;
+ }
+
+ FILE *fp = fopen(filename, "r");
+ if (!fp) {
+ ERR("failed to open '%s' (%s)",
+ filename, strerror(errno));
+ ret = KNOT_EFILE;
+ break;
+ }
+ ret = process_lines(params, fp);
+ fclose(fp);
+ if (ret != KNOT_EOK) {
+ break;
+ }
+ }
+
+ return ret;
+}
+
+int cmd_update(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ /* update is optional token, next add|del|delete */
+ int bp = tok_find(lp, knsupdate_cmd_array);
+ if (bp < 0) return bp; /* Syntax error. */
+
+ /* allow only specific tokens */
+ cmd_handle_f *h = cmd_handle;
+ if (h[bp] != cmd_add && h[bp] != cmd_del) {
+ ERR("unexpected token '%s' after 'update', allowed: '%s'",
+ lp, "{add|del|delete}");
+ return KNOT_EPARSEFAIL;
+ }
+
+ return h[bp](tok_skipspace(lp + TOK_L(knsupdate_cmd_array[bp])), params);
+}
+
+int cmd_add(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ if (parse_full_rr(&params->parser, lp) != KNOT_EOK) {
+ return KNOT_EPARSEFAIL;
+ }
+
+ return rr_list_append(&params->parser, &params->update_list, &params->mm);
+}
+
+int cmd_del(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ zs_scanner_t *rrp = &params->parser;
+ int ret = parse_partial_rr(rrp, lp, PARSE_NODEFAULT);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ /* Check owner name. */
+ if (rrp->r_owner_length == 0) {
+ ERR("failed to parse owner name '%s'", lp);
+ return KNOT_EPARSEFAIL;
+ }
+
+ rrp->r_ttl = 0; /* Set TTL = 0 when deleting. */
+
+ /* When deleting whole RRSet, use ANY class */
+ if (rrp->r_data_length == 0) {
+ rrp->r_class = KNOT_CLASS_ANY;
+ } else {
+ rrp->r_class = KNOT_CLASS_NONE;
+ }
+
+ return rr_list_append(rrp, &params->update_list, &params->mm);
+}
+
+int cmd_class(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ uint16_t cls;
+
+ if (knot_rrclass_from_string(lp, &cls) != 0) {
+ ERR("failed to parse class '%s'", lp);
+ return KNOT_EPARSEFAIL;
+ }
+
+ params->class_num = cls;
+ params->parser.default_class = params->class_num;
+
+ return KNOT_EOK;
+}
+
+int cmd_ttl(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ uint32_t ttl = 0;
+
+ if (str_to_u32(lp, &ttl) != KNOT_EOK) {
+ ERR("failed to parse ttl '%s'", lp);
+ return KNOT_EPARSEFAIL;
+ }
+
+ return knsupdate_set_ttl(params, ttl);
+}
+
+int cmd_debug(const char* lp, _unused_ knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ msg_enable_debug(1);
+
+ return KNOT_EOK;
+}
+
+int cmd_nxdomain(const char *lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ zs_scanner_t *s = &params->parser;
+ int ret = parse_partial_rr(s, lp, PARSE_NODEFAULT | PARSE_NAMEONLY);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ s->r_ttl = 0;
+ s->r_class = KNOT_CLASS_NONE;
+
+ return rr_list_append(s, &params->prereq_list, &params->mm);
+}
+
+int cmd_yxdomain(const char *lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ zs_scanner_t *s = &params->parser;
+ int ret = parse_partial_rr(s, lp, PARSE_NODEFAULT | PARSE_NAMEONLY);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ s->r_ttl = 0;
+ s->r_class = KNOT_CLASS_ANY;
+
+ return rr_list_append(s, &params->prereq_list, &params->mm);
+}
+
+int cmd_nxrrset(const char *lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ zs_scanner_t *s = &params->parser;
+ int ret = parse_partial_rr(s, lp, PARSE_NOTTL);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ /* Check owner name. */
+ if (s->r_owner_length == 0) {
+ ERR("failed to parse prereq owner name '%s'", lp);
+ return KNOT_EPARSEFAIL;
+ }
+
+ s->r_ttl = 0;
+ s->r_class = KNOT_CLASS_NONE;
+
+ return rr_list_append(s, &params->prereq_list, &params->mm);
+}
+
+int cmd_yxrrset(const char *lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ zs_scanner_t *s = &params->parser;
+ int ret = parse_partial_rr(s, lp, PARSE_NOTTL);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ /* Check owner name. */
+ if (s->r_owner_length == 0) {
+ ERR("failed to parse prereq owner name '%s'", lp);
+ return KNOT_EPARSEFAIL;
+ }
+
+ s->r_ttl = 0;
+ if (s->r_data_length > 0) {
+ s->r_class = KNOT_CLASS_IN;
+ } else {
+ s->r_class = KNOT_CLASS_ANY;
+ }
+
+ return rr_list_append(s, &params->prereq_list, &params->mm);
+}
+
+int cmd_prereq(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ /* Scan prereq specifier ([ny]xrrset|[ny]xdomain) */
+ int prereq_type = tok_find(lp, pq_array);
+ if (prereq_type < 0) {
+ return prereq_type;
+ }
+
+ const char *tok = pq_array[prereq_type];
+ DBG("%s: type %s", __func__, TOK_S(tok));
+ lp = tok_skipspace(lp + TOK_L(tok));
+ if (strlen(lp) == 0) {
+ ERR("missing prerequisite owner name");
+ return KNOT_EINVAL;
+ }
+
+ int ret = KNOT_EOK;
+ switch(prereq_type) {
+ case PQ_NXDOMAIN:
+ ret = cmd_nxdomain(lp, params);
+ break;
+ case PQ_YXDOMAIN:
+ ret = cmd_yxdomain(lp, params);
+ break;
+ case PQ_NXRRSET:
+ ret = cmd_nxrrset(lp, params);
+ break;
+ case PQ_YXRRSET:
+ ret = cmd_yxrrset(lp, params);
+ break;
+ default:
+ ret = KNOT_ERROR;
+ }
+
+ return ret;
+}
+
+int cmd_exit(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ params->stop = true;
+
+ return KNOT_EOK;
+}
+
+int cmd_send(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+ DBG("sending packet");
+
+ if (params->zone == NULL) {
+ ERR("no zone specified");
+ return KNOT_EINVAL;
+ }
+
+ /* Build query packet. */
+ int ret = build_query(params);
+ if (ret != KNOT_EOK) {
+ ERR("failed to build UPDATE message (%s)", knot_strerror(ret));
+ return ret;
+ }
+
+ /* Sign if key specified. */
+ sign_context_t sign_ctx = { 0 };
+ if (params->tsig_key.name) {
+ ret = sign_context_init_tsig(&sign_ctx, &params->tsig_key);
+ if (ret != KNOT_EOK) {
+ ERR("failed to initialize signing context (%s)",
+ knot_strerror(ret));
+ return ret;
+ }
+
+ ret = sign_packet(params->query, &sign_ctx);
+ if (ret != KNOT_EOK) {
+ ERR("failed to sign UPDATE message (%s)",
+ knot_strerror(ret));
+ sign_context_deinit(&sign_ctx);
+ return ret;
+ }
+ }
+
+ int rb = 0;
+ /* Send/recv message (1 try + N retries). */
+ int tries = 1 + params->retries;
+ for (; tries > 0; --tries) {
+ rb = pkt_sendrecv(params);
+ if (rb > 0) {
+ break;
+ }
+ }
+
+ /* Check Send/recv result. */
+ if (rb <= 0) {
+ sign_context_deinit(&sign_ctx);
+ return KNOT_ECONNREFUSED;
+ }
+
+ /* Parse response. */
+ ret = knot_pkt_parse(params->answer, KNOT_PF_NOCANON);
+ if (ret != KNOT_EOK) {
+ ERR("failed to parse response (%s)", knot_strerror(ret));
+ sign_context_deinit(&sign_ctx);
+ return ret;
+ }
+
+ /* Check signature if expected. */
+ if (params->tsig_key.name) {
+ ret = verify_packet(params->answer, &sign_ctx);
+ sign_context_deinit(&sign_ctx);
+ if (ret != KNOT_EOK) {
+ print_packet(params->answer, NULL, 0, -1, 0, true,
+ &params->style);
+ ERR("reply verification (%s)", knot_strerror(ret));
+ return ret;
+ }
+ }
+
+ /* Free RRSet lists. */
+ knsupdate_reset(params);
+
+ /* Check return code. */
+ if (knot_pkt_ext_rcode(params->answer) != KNOT_RCODE_NOERROR) {
+ print_packet(params->answer, NULL, 0, -1, 0, true, &params->style);
+ ERR("update failed with error '%s'",
+ knot_pkt_ext_rcode_name(params->answer));
+ ret = KNOT_ERROR;
+ } else {
+ DBG("update success");
+ }
+
+ return ret;
+}
+
+int cmd_zone(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ /* Check zone name. */
+ if (!dname_isvalid(lp)) {
+ ERR("failed to parse zone '%s'", lp);
+ return KNOT_EPARSEFAIL;
+ }
+
+ free(params->zone);
+ params->zone = strdup(lp);
+
+ return KNOT_EOK;
+}
+
+int cmd_server(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ /* Parse host. */
+ srv_info_t *srv = parse_host(lp, params->server->service);
+ if (!srv) {
+ ERR("failed to parse server '%s'", lp);
+ return KNOT_ENOMEM;
+ }
+
+ srv_info_free(params->server);
+ params->server = srv;
+
+ return KNOT_EOK;
+}
+
+int cmd_local(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ /* Parse host. */
+ srv_info_t *srv = parse_host(lp, "0");
+ if (!srv) {
+ ERR("failed to parse local '%s'", lp);
+ return KNOT_ENOMEM;
+ }
+
+ srv_info_free(params->srcif);
+ params->srcif = srv;
+
+ return KNOT_EOK;
+}
+
+int cmd_show(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ if (!params->query) {
+ return KNOT_EOK;
+ }
+
+ printf("Update query:\n");
+ build_query(params);
+ print_packet(params->query, NULL, 0, -1, 0, false, &params->style);
+ printf("\n");
+
+ return KNOT_EOK;
+}
+
+int cmd_answer(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ if (!params->answer) {
+ return KNOT_EOK;
+ }
+
+ printf("Answer:\n");
+ print_packet(params->answer, NULL, 0, -1, 0, true, &params->style);
+
+ return KNOT_EOK;
+}
+
+int cmd_key(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ /* Convert to default format. */
+ char *kstr = strdup(lp);
+ if (!kstr) {
+ return KNOT_ENOMEM;
+ }
+
+ int ret = KNOT_EOK;
+
+ /* Search for the name secret separation. Allow also alg:name:key form. */
+ char *sep = strchr(kstr, ' ');
+ if (sep != NULL) {
+ /* Replace ' ' with ':'. More spaces are ignored in base64. */
+ *sep = ':';
+ }
+
+ /* Override existing key. */
+ knot_tsig_key_deinit(&params->tsig_key);
+
+ ret = knot_tsig_key_init_str(&params->tsig_key, kstr);
+ if (ret != KNOT_EOK) {
+ ERR("invalid key specification");
+ }
+
+ free(kstr);
+
+ return ret;
+}
+
+int cmd_origin(const char* lp, knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ /* Check zone name. */
+ if (!dname_isvalid(lp)) {
+ ERR("failed to parse zone '%s'", lp);
+ return KNOT_EPARSEFAIL;
+ }
+
+ return knsupdate_set_origin(params, lp);
+}
+
+/*
+ * Not implemented.
+ */
+
+int cmd_gsstsig(const char* lp, _unused_ knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ ERR("gsstsig not supported");
+
+ return KNOT_ENOTSUP;
+}
+
+int cmd_oldgsstsig(const char* lp, _unused_ knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ ERR("oldgsstsig not supported");
+
+ return KNOT_ENOTSUP;
+}
+
+int cmd_realm(const char* lp, _unused_ knsupdate_params_t *params)
+{
+ DBG("%s: lp='%s'", __func__, lp);
+
+ ERR("realm not supported");
+
+ return KNOT_ENOTSUP;
+}
diff --git a/src/utils/knsupdate/knsupdate_exec.h b/src/utils/knsupdate/knsupdate_exec.h
new file mode 100644
index 0000000..36ca43b
--- /dev/null
+++ b/src/utils/knsupdate/knsupdate_exec.h
@@ -0,0 +1,25 @@
+/* Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "utils/knsupdate/knsupdate_params.h"
+
+extern const char* knsupdate_cmd_array[];
+
+int knsupdate_exec(knsupdate_params_t *params);
+
+int knsupdate_process_line(const char *line, knsupdate_params_t *params);
diff --git a/src/utils/knsupdate/knsupdate_interactive.c b/src/utils/knsupdate/knsupdate_interactive.c
new file mode 100644
index 0000000..0e4ed66
--- /dev/null
+++ b/src/utils/knsupdate/knsupdate_interactive.c
@@ -0,0 +1,177 @@
+/* Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <histedit.h>
+
+#include "contrib/string.h"
+#include "utils/common/lookup.h"
+#include "utils/common/msg.h"
+#include "utils/knsupdate/knsupdate_exec.h"
+#include "utils/knsupdate/knsupdate_interactive.h"
+
+#define HISTORY_FILE ".knsupdate_history"
+
+static char *prompt(EditLine *el)
+{
+ return PROGRAM_NAME"> ";
+}
+
+static void print_commands(void)
+{
+ printf("\n");
+
+ for (const char **cmd = knsupdate_cmd_array; *cmd != NULL; cmd++) {
+ printf(" %-18s\n", (*cmd) + 1);
+ }
+}
+
+static void cmds_lookup(EditLine *el, const char *str, size_t str_len)
+{
+ lookup_t lookup;
+ int ret = lookup_init(&lookup);
+ if (ret != KNOT_EOK) {
+ return;
+ }
+
+ // Fill the lookup with command names.
+ for (const char **desc = knsupdate_cmd_array; *desc != NULL; desc++) {
+ ret = lookup_insert(&lookup, (*desc) + 1, NULL);
+ if (ret != KNOT_EOK) {
+ goto cmds_lookup_finish;
+ }
+ }
+
+ (void)lookup_complete(&lookup, str, str_len, el, true);
+
+cmds_lookup_finish:
+ lookup_deinit(&lookup);
+}
+
+static unsigned char complete(EditLine *el, int ch)
+{
+ int argc, token, pos;
+ const char **argv;
+
+ const LineInfo *li = el_line(el);
+ Tokenizer *tok = tok_init(NULL);
+
+ // Parse the line.
+ int ret = tok_line(tok, li, &argc, &argv, &token, &pos);
+ if (ret != 0) {
+ goto complete_exit;
+ }
+
+ // Show possible commands.
+ if (argc == 0) {
+ print_commands();
+ goto complete_exit;
+ }
+
+ // Complete the command name.
+ if (token == 0) {
+ cmds_lookup(el, argv[0], pos);
+ goto complete_exit;
+ }
+
+ // Find the command descriptor.
+ const char **desc = knsupdate_cmd_array;
+ while (*desc != NULL && strcmp((*desc) + 1, argv[0]) != 0) {
+ desc++;
+ }
+ if (*desc == NULL) {
+ goto complete_exit;
+ }
+
+complete_exit:
+ tok_reset(tok);
+ tok_end(tok);
+
+ return CC_REDISPLAY;
+}
+
+int interactive_loop(knsupdate_params_t *params)
+{
+ char *hist_file = NULL;
+ const char *home = getenv("HOME");
+ if (home != NULL) {
+ hist_file = sprintf_alloc("%s/%s", home, HISTORY_FILE);
+ }
+ if (hist_file == NULL) {
+ INFO("failed to get home directory");
+ }
+
+ EditLine *el = el_init(PROGRAM_NAME, stdin, stdout, stderr);
+ if (el == NULL) {
+ ERR("interactive mode not available");
+ free(hist_file);
+ return KNOT_ERROR;
+ }
+
+ History *hist = history_init();
+ if (hist == NULL) {
+ ERR("interactive mode not available");
+ el_end(el);
+ free(hist_file);
+ return KNOT_ERROR;
+ }
+
+ HistEvent hev = { 0 };
+ history(hist, &hev, H_SETSIZE, 1000);
+ history(hist, &hev, H_SETUNIQUE, 1);
+ el_set(el, EL_HIST, history, hist);
+ history(hist, &hev, H_LOAD, hist_file);
+
+ el_set(el, EL_TERMINAL, NULL);
+ el_set(el, EL_EDITOR, "emacs");
+ el_set(el, EL_PROMPT, prompt);
+ el_set(el, EL_SIGNAL, 1);
+ el_source(el, NULL);
+
+ // Warning: these two el_sets()'s always leak -- in libedit2 library!
+ // For more details see this commit's message.
+ el_set(el, EL_ADDFN, PROGRAM_NAME"-complete",
+ "Perform "PROGRAM_NAME" completion.", complete);
+ el_set(el, EL_BIND, "^I", PROGRAM_NAME"-complete", NULL);
+
+ int count;
+ const char *line;
+ while ((line = el_gets(el, &count)) != NULL && count > 0) {
+ char command[count + 1];
+ memcpy(command, line, count);
+ command[count] = '\0';
+ // Removes trailing newline
+ size_t cmd_len = strcspn(command, "\n");
+ command[cmd_len] = '\0';
+
+ if (cmd_len > 0) {
+ history(hist, &hev, H_ENTER, command);
+ history(hist, &hev, H_SAVE, hist_file);
+ }
+
+ // Process the command.
+ (void)knsupdate_process_line(command, params);
+ if (params->stop) {
+ break;
+ }
+ }
+
+ history_end(hist);
+ free(hist_file);
+
+ el_end(el);
+
+ return KNOT_EOK;
+}
diff --git a/src/utils/knsupdate/knsupdate_interactive.h b/src/utils/knsupdate/knsupdate_interactive.h
new file mode 100644
index 0000000..e2a2428
--- /dev/null
+++ b/src/utils/knsupdate/knsupdate_interactive.h
@@ -0,0 +1,26 @@
+/* Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "utils/knsupdate/knsupdate_params.h"
+
+/*!
+ * Executes an interactive processing loop.
+ *
+ * \param[in] params Utility parameters.
+ */
+int interactive_loop(knsupdate_params_t *params);
diff --git a/src/utils/knsupdate/knsupdate_main.c b/src/utils/knsupdate/knsupdate_main.c
new file mode 100644
index 0000000..ab65c1e
--- /dev/null
+++ b/src/utils/knsupdate/knsupdate_main.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdlib.h>
+
+#include "libdnssec/crypto.h"
+#include "utils/knsupdate/knsupdate_exec.h"
+#include "utils/knsupdate/knsupdate_params.h"
+#include "libknot/libknot.h"
+
+int main(int argc, char *argv[])
+{
+
+ int ret = EXIT_SUCCESS;
+
+ tzset();
+
+ knsupdate_params_t params;
+ if (knsupdate_parse(&params, argc, argv) == KNOT_EOK) {
+ if (!params.stop) {
+ dnssec_crypto_init();
+ if (knsupdate_exec(&params) != KNOT_EOK) {
+ ret = EXIT_FAILURE;
+ }
+ dnssec_crypto_cleanup();
+ }
+ } else {
+ ret = EXIT_FAILURE;
+ }
+
+ knsupdate_clean(&params);
+ return ret;
+}
diff --git a/src/utils/knsupdate/knsupdate_params.c b/src/utils/knsupdate/knsupdate_params.c
new file mode 100644
index 0000000..f9fa41f
--- /dev/null
+++ b/src/utils/knsupdate/knsupdate_params.c
@@ -0,0 +1,304 @@
+/* Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <getopt.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "utils/knsupdate/knsupdate_params.h"
+#include "utils/common/msg.h"
+#include "utils/common/netio.h"
+#include "libknot/libknot.h"
+#include "libknot/tsig.h"
+#include "contrib/mempattern.h"
+#include "contrib/strtonum.h"
+#include "contrib/ucw/mempool.h"
+
+#define DEFAULT_RETRIES_NSUPDATE 3
+#define DEFAULT_TIMEOUT_NSUPDATE 12
+
+static const style_t DEFAULT_STYLE_NSUPDATE = {
+ .format = FORMAT_NSUPDATE,
+ .style = {
+ .wrap = false,
+ .show_class = true,
+ .show_ttl = true,
+ .verbose = false,
+ .original_ttl = false,
+ .empty_ttl = false,
+ .human_ttl = false,
+ .human_timestamp = true,
+ .generic = false,
+ .ascii_to_idn = NULL
+ },
+ .show_query = false,
+ .show_header = true,
+ .show_section = true,
+ .show_edns = false,
+ .show_question = true,
+ .show_answer = true,
+ .show_authority = true,
+ .show_additional = true,
+ .show_tsig = true,
+ .show_footer = false
+};
+
+static int parser_set_default(zs_scanner_t *s, const char *fmt, ...)
+{
+ /* Format string. */
+ char buf[512]; /* Must suffice for domain name and TTL. */
+ va_list ap;
+ va_start(ap, fmt);
+ int n = vsnprintf(buf, sizeof(buf), fmt, ap);
+ va_end(ap);
+
+ if (n < 0 || (size_t)n >= sizeof(buf)) {
+ return ZS_EINVAL;
+ }
+
+ /* Buffer must contain newline */
+ if (zs_set_input_string(s, buf, n) != 0 ||
+ zs_parse_all(s) != 0) {
+ return s->error.code;
+ }
+
+ return KNOT_EOK;
+}
+
+static int knsupdate_init(knsupdate_params_t *params)
+{
+ memset(params, 0, sizeof(knsupdate_params_t));
+
+ /* Initialize lists. */
+ init_list(&params->qfiles);
+ init_list(&params->update_list);
+ init_list(&params->prereq_list);
+
+ /* Initialize memory context. */
+ mm_ctx_mempool(&params->mm, MM_DEFAULT_BLKSIZE);
+
+ /* Default server. */
+ params->server = srv_info_create(DEFAULT_IPV4_NAME, DEFAULT_DNS_PORT);
+ if (!params->server)
+ return KNOT_ENOMEM;
+
+ /* Default settings. */
+ params->ip = IP_ALL;
+ params->protocol = PROTO_ALL;
+ params->class_num = KNOT_CLASS_IN;
+ params->retries = DEFAULT_RETRIES_NSUPDATE;
+ params->wait = DEFAULT_TIMEOUT_NSUPDATE;
+
+ /* Initialize RR parser. */
+ if (zs_init(&params->parser, ".", params->class_num, 3600) != 0 ||
+ zs_set_processing(&params->parser, NULL, NULL, NULL) != 0) {
+ zs_deinit(&params->parser);
+ return KNOT_ENOMEM;
+ }
+
+ /* Default style. */
+ params->style = DEFAULT_STYLE_NSUPDATE;
+
+ /* Create query/answer packets. */
+ params->query = knot_pkt_new(NULL, KNOT_WIRE_MAX_PKTSIZE, &params->mm);
+ params->answer = knot_pkt_new(NULL, KNOT_WIRE_MAX_PKTSIZE, &params->mm);
+
+ return KNOT_EOK;
+}
+
+void knsupdate_clean(knsupdate_params_t *params)
+{
+ if (params == NULL) {
+ return;
+ }
+
+ /* Clear current query. */
+ knsupdate_reset(params);
+
+ /* Free qfiles. */
+ ptrlist_free(&params->qfiles, &params->mm);
+
+ srv_info_free(params->server);
+ srv_info_free(params->srcif);
+ free(params->zone);
+ zs_deinit(&params->parser);
+ knot_pkt_free(params->query);
+ knot_pkt_free(params->answer);
+ knot_tsig_key_deinit(&params->tsig_key);
+
+ /* Clean up the structure. */
+ mp_delete(params->mm.ctx);
+ memset(params, 0, sizeof(*params));
+}
+
+/*! \brief Free RRSet list. */
+static void rr_list_free(list_t *list, knot_mm_t *mm)
+{
+ assert(list != NULL);
+ assert(mm != NULL);
+
+ ptrnode_t *node;
+ WALK_LIST(node, *list) {
+ knot_rrset_t *rrset = (knot_rrset_t *)node->d;
+ knot_rrset_free(rrset, NULL);
+ }
+ ptrlist_free(list, mm);
+}
+
+void knsupdate_reset(knsupdate_params_t *params)
+{
+ /* Free ADD/REMOVE RRSets. */
+ rr_list_free(&params->update_list, &params->mm);
+
+ /* Free PREREQ RRSets. */
+ rr_list_free(&params->prereq_list, &params->mm);
+}
+
+static void print_help(void)
+{
+ printf("Usage: %s [-d] [-v] [-k keyfile | -y [hmac:]name:key]\n"
+ " [-p port] [-t timeout] [-r retries] [filename]\n",
+ PROGRAM_NAME);
+}
+
+int knsupdate_parse(knsupdate_params_t *params, int argc, char *argv[])
+{
+ if (params == NULL || argv == NULL) {
+ return KNOT_EINVAL;
+ }
+
+ int ret = knsupdate_init(params);
+ if (ret != KNOT_EOK) {
+ return ret;
+ }
+
+ // Long options.
+ struct option opts[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { NULL }
+ };
+
+ /* Command line options processing. */
+ int opt = 0;
+ while ((opt = getopt_long(argc, argv, "dhDvVp:t:r:y:k:", opts, NULL))
+ != -1) {
+ switch (opt) {
+ case 'd':
+ case 'D': /* Extra debugging. */
+ msg_enable_debug(1);
+ break;
+ case 'h':
+ print_help();
+ params->stop = true;
+ return KNOT_EOK;
+ case 'v':
+ params->protocol = PROTO_TCP;
+ break;
+ case 'V':
+ print_version(PROGRAM_NAME);
+ params->stop = true;
+ return KNOT_EOK;
+ case 'p':
+ free(params->server->service);
+ params->server->service = strdup(optarg);
+ if (!params->server->service) {
+ ERR("failed to set default port '%s'", optarg);
+ return KNOT_ENOMEM;
+ }
+ break;
+ case 'r':
+ ret = str_to_u32(optarg, &params->retries);
+ if (ret != KNOT_EOK) {
+ ERR("invalid retries '%s'", optarg);
+ return ret;
+ }
+ break;
+ case 't':
+ ret = params_parse_wait(optarg, &params->wait);
+ if (ret != KNOT_EOK) {
+ ERR("invalid timeout '%s'", optarg);
+ return ret;
+ }
+ break;
+ case 'y':
+ knot_tsig_key_deinit(&params->tsig_key);
+ ret = knot_tsig_key_init_str(&params->tsig_key, optarg);
+ if (ret != KNOT_EOK) {
+ ERR("failed to parse key '%s'", optarg);
+ return ret;
+ }
+ break;
+ case 'k':
+ knot_tsig_key_deinit(&params->tsig_key);
+ ret = knot_tsig_key_init_file(&params->tsig_key, optarg);
+ if (ret != KNOT_EOK) {
+ ERR("failed to parse keyfile '%s'", optarg);
+ return ret;
+ }
+ break;
+ default:
+ print_help();
+ return KNOT_ENOTSUP;
+ }
+ }
+
+ /* No retries for TCP. */
+ if (params->protocol == PROTO_TCP) {
+ params->retries = 0;
+ } else {
+ /* If wait/tries < 1 s, set 1 second for each try. */
+ if (params->wait > 0 &&
+ (uint32_t)params->wait < ( 1 + params->retries)) {
+ params->wait = 1;
+ } else {
+ params->wait /= (1 + params->retries);
+ }
+ }
+
+ /* Process non-option parameters. */
+ for (; optind < argc; ++optind) {
+ ptrlist_add(&params->qfiles, argv[optind], &params->mm);
+ }
+
+ return ret;
+}
+
+int knsupdate_set_ttl(knsupdate_params_t *params, const uint32_t ttl)
+{
+ int ret = parser_set_default(&params->parser, "$TTL %u\n", ttl);
+ if (ret != KNOT_EOK) {
+ ERR("failed to set default TTL, %s", zs_strerror(ret));
+ }
+ return ret;
+}
+
+int knsupdate_set_origin(knsupdate_params_t *params, const char *origin)
+{
+ char *fqdn = get_fqd_name(origin);
+
+ int ret = parser_set_default(&params->parser, "$ORIGIN %s\n", fqdn);
+
+ free(fqdn);
+
+ if (ret != KNOT_EOK) {
+ ERR("failed to set default origin, %s", zs_strerror(ret));
+ }
+ return ret;
+}
diff --git a/src/utils/knsupdate/knsupdate_params.h b/src/utils/knsupdate/knsupdate_params.h
new file mode 100644
index 0000000..1933244
--- /dev/null
+++ b/src/utils/knsupdate/knsupdate_params.h
@@ -0,0 +1,72 @@
+/* Copyright (C) 2022 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include "utils/common/netio.h"
+#include "utils/common/params.h"
+#include "utils/common/sign.h"
+#include "libknot/libknot.h"
+#include "libzscanner/scanner.h"
+#include "contrib/ucw/lists.h"
+
+#define PROGRAM_NAME "knsupdate"
+
+/*! \brief knsupdate-specific params data. */
+typedef struct {
+ /*!< Stop processing - just print help, version,... */
+ bool stop;
+ /*!< List of files with query data. */
+ list_t qfiles;
+ /*!< List of nameservers to query to. */
+ srv_info_t *server;
+ /*!< Local interface (optional). */
+ srv_info_t *srcif;
+ /*!< Version of ip protocol to use. */
+ ip_t ip;
+ /*!< Type (TCP, UDP) protocol to use. */
+ protocol_t protocol;
+ /*!< Default class number. */
+ uint16_t class_num;
+ /*!< Number of UDP retries. */
+ uint32_t retries;
+ /*!< Wait for network response in seconds (-1 means forever). */
+ int32_t wait;
+ /*!< Current zone. */
+ char *zone;
+ /*!< RR parser. */
+ zs_scanner_t parser;
+ /*!< Current packet. */
+ knot_pkt_t *query;
+ /*!< Current response. */
+ knot_pkt_t *answer;
+ /*< Lists of RRSets. */
+ list_t update_list, prereq_list;
+ /*!< Transaction signature context. */
+ knot_tsig_key_t tsig_key;
+ /*!< Default output settings. */
+ style_t style;
+ /*!< Memory context. */
+ knot_mm_t mm;
+} knsupdate_params_t;
+
+int knsupdate_parse(knsupdate_params_t *params, int argc, char *argv[]);
+int knsupdate_set_ttl(knsupdate_params_t *params, const uint32_t ttl);
+int knsupdate_set_origin(knsupdate_params_t *params, const char *origin);
+void knsupdate_clean(knsupdate_params_t *params);
+void knsupdate_reset(knsupdate_params_t *params);
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