diff options
author | Harald Welte <laforge@osmocom.org> | 2020-01-12 16:23:54 +0100 |
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committer | Harald Welte <laforge@osmocom.org> | 2020-01-12 16:26:52 +0100 |
commit | 41fe3625915c456513544b99ba8c057c0f650b3c (patch) | |
tree | e1d02589c6609b8f565db28f8d7a7eda1b02d8ad /src | |
parent | 0bb8fce2f1ae160a5cd989a27daa0a8f6c749ab0 (diff) |
Revert "add osmo-mslookup-client program"
This reverts commit 637bbfcd9275f8c47212b29b50110f56ba6397bf, as it
is a follow-up commit to Change-Id I03a0ffa1d4dc1b24ac78a5ad0975bca90a49c728
which causes all OBS osmo-hlr builds to fail in the mslookup_client_mdns test.
Change-Id: I43084ac3b24684f17df43fefc82019e44baaa236
Diffstat (limited to 'src')
-rw-r--r-- | src/mslookup/Makefile.am | 9 | ||||
-rw-r--r-- | src/mslookup/osmo-mslookup-client.c | 879 |
2 files changed, 0 insertions, 888 deletions
diff --git a/src/mslookup/Makefile.am b/src/mslookup/Makefile.am index a720c40..07fb6f4 100644 --- a/src/mslookup/Makefile.am +++ b/src/mslookup/Makefile.am @@ -26,12 +26,3 @@ libosmo_mslookup_la_LIBADD = \ $(LIBOSMOGSM_LIBS) \ $(TALLOC_LIBS) \ $(NULL) - -bin_PROGRAMS = osmo-mslookup-client -osmo_mslookup_client_SOURCES = osmo-mslookup-client.c -osmo_mslookup_client_LDADD = \ - libosmo-mslookup.la \ - $(LIBOSMOCORE_LIBS) \ - $(TALLOC_LIBS) \ - $(NULL) -osmo_mslookup_client_CFLAGS = $(TALLOC_CFLAGS) $(LIBOSMOCORE_CFLAGS) diff --git a/src/mslookup/osmo-mslookup-client.c b/src/mslookup/osmo-mslookup-client.c deleted file mode 100644 index 1c0efe9..0000000 --- a/src/mslookup/osmo-mslookup-client.c +++ /dev/null @@ -1,879 +0,0 @@ -/*! \file osmo-mslookup-client.c - * Distributed GSM: find the location of subscribers, for example by multicast DNS, - * to obtain HLR, SIP or SMPP server addresses (or arbitrary service names). - */ -/* - * (C) 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> - * (C) 2019 by Neels Hofmeyr <neels@hofmeyr.de> - * - * All Rights Reserved - * - * 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 2 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 <http://www.gnu.org/licenses/>. - */ - -#include <stdio.h> -#include <unistd.h> -#include <getopt.h> -#include <errno.h> -#include <talloc.h> -#include <sys/un.h> - -#include <osmocom/core/application.h> -#include <osmocom/core/logging.h> -#include <osmocom/core/select.h> -#include <osmocom/core/socket.h> -#include <osmocom/mslookup/mslookup_client.h> -#include <osmocom/mslookup/mslookup_client_mdns.h> -#include <osmocom/mslookup/mdns_sock.h> -#include <osmocom/mslookup/mdns.h> - -#define CSV_HEADERS "query\tresult\tlast\tage\tv4_ip\tv4_port\tv6_ip\tv6_port" - -static void print_version(void) -{ - printf("osmo-mslookup-client version %s\n", PACKAGE_VERSION); - printf("\n" - "Copyright (C) 2019 by sysmocom - s.f.m.c. GmbH\n" - "Copyright (C) 2019 by Neels Hofmeyr <neels@hofmeyr.de>\n" - "This program is free software; you can redistribute it and/or modify\n" - "it under the terms of the GNU General Public License as published by\n" - "the Free Software Foundation; either version 2 of the License, or\n" - "(at your option) any later version.\n" - "\n"); -} - -static void print_help() -{ - print_version(); - printf( -"Standalone mslookup client for Distributed GSM\n" -"\n" -"Receiving mslookup results means listening for responses on a socket. Often,\n" -"integration (e.g. FreeSwitch dialplan.py) makes it hard to select() on a socket\n" -"to read responses, because that interferes with the main program (e.g.\n" -"FreeSwitch's dialplan.py seems to be integrated with an own select() main loop\n" -"that interferes with osmo_select_main(), or an smpp.py uses\n" -"smpplib.client.listen() as main loop, etc.).\n" -"\n" -"This program provides a trivial solution, by outsourcing the mslookup main loop\n" -"to a separate process. Communication is done via cmdline arg and stdout pipe or\n" -"a (blocking) unix domain socket, results are returned in CSV or JSON format.\n" -"\n" -"This can be done one-shot, i.e. exit as soon as the response has been\n" -"determined, or in daemon form, i.e. continuously listen for requests and return\n" -"responses.\n" -"\n" -"About running a local daemon: it is unintuitive to connect to a socket to solve\n" -"a problem of reading from a socket -- it seems like just more of the same\n" -"problem. The reasons why the daemon is in fact useful are:\n" -"- The osmo-mslookup-client daemon will return only those results matching\n" -" requests issued on that socket connection.\n" -"- A program can simply blockingly recv() from the osmo-mslookup-client socket\n" -" instead of needing to run osmo_select_main() so that libosmo-mslookup is able\n" -" to asynchronously receive responses from remote servers.\n" -"- Only one long-lived multicast socket needs to be opened instead of a new\n" -" socket for each request.\n" -"\n" -"Output is in CSV or json, see --format. The default is tab-separated CSV\n" -"with these columns:\n" -CSV_HEADERS "\n" -"\n" -"One-shot operation example:\n" -"$ osmo-mslookup-client 1000-@sip.voice.12345.msisdn -f json\n" -"{\"query\": \"sip.voice.12345.msisdn\", \"result\": \"result\", \"last\": true, \"age\": 5, \"v4\": [\"1.2.3.7\", \"23\"]}\n" -"$\n" -"\n" -"Daemon operation example:\n" -"$ osmo-mslookup-client -s /tmp/mslookup -d\n" -"(and a client program then connects to /tmp/mslookup, find an implementation\n" -"example below)\n" -"\n" -"Integrating with calling programs can be done by:\n" -"- call osmo-mslookup-client with the query string as argument.\n" -" It will open a multicast DNS socket, send out a query and wait for the\n" -" matching response. It will print the result on stdout and exit.\n" -" This method launches a new process for every mslookup query,\n" -" and creates a short-lived multicast listener for each invocation.\n" -" This is fine for low activity, but does not scale well.\n" -"\n" -"- invoke osmo-mslookup-client --socket /tmp/mslookup -d.\n" -" Individual queries can be sent by connecting to that unix domain socket,\n" -" blockingly reading the response when it arrives and disconnecting.\n" -" This way only one process keeps one multicast listener open.\n" -" Callers can connect to this socket without spawning processes.\n" -" This is recommended for scale.\n" -"\n" -"Python example clients for {CSV,JSON}x{cmdline,socket} can be found here:\n" -"http://git.osmocom.org/osmo-hlr/tree/contrib/dgsm/osmo-mslookup-pipe.py\n" -"http://git.osmocom.org/osmo-hlr/tree/contrib/dgsm/osmo-mslookup-socket.py\n" -"\n" -"\n" -"Options:\n" -"\n" -"[[delay-][timeout]@]service.number.id\n" -" A service query string with optional individual timeout.\n" -" The same format is also used on a daemon socket, if any.\n" -" The timeout consists of the min-delay and the timeout numbers,\n" -" corresponding to the --min-delay and --timeout options, in milliseconds.\n" -" These options apply if a query string lacks own numbers.\n" -" Examples:\n" -" gsup.hlr.1234567.imsi Use cmdline timeout settings\n" -" 5000@gsup.hlr.1234567.imsi Return N results for 5 seconds\n" -" 1000-5000@sip.voice.123.msisdn Same, but silent for first second\n" -" 10000-@smpp.sms.567.msisdn Return 1 result after 10 seconds\n" -"\n" -"--format -f csv (default)\n" -" Format result lines in CSV format.\n" -"--no-csv-headers -H\n" -" If the format is 'csv', by default, the first output line prints the\n" -" CSV headers used for CSV output format. This option disables these CSV\n" -" headers.\n" -"\n" -"--format -f json\n" -" Format result lines in json instead of semicolon separated, like:\n" -" {\"query\": \"sip.voice.12345.msisdn\", \"result\": \"ok\", \"v4\": [\"10.9.8.7\", \"5060\"]}\n" -"\n" -"--daemon -d\n" -" Keep running after a request has been serviced\n" -"\n" -"--mdns-ip -m " OSMO_MSLOOKUP_MDNS_IP4 " -m " OSMO_MSLOOKUP_MDNS_IP6 "\n" -"--mdns-port -M " OSMO_STRINGIFY_VAL(OSMO_MSLOOKUP_MDNS_PORT) "\n" -" Set multicast IP address / port to send mDNS requests and listen for\n" -" mDNS reponses\n" -"--mdns-domain-suffix -D " OSMO_MDNS_DOMAIN_SUFFIX_DEFAULT "\n" -" Append this suffix to each mDNS query's domain to avoid colliding with the\n" -" top-level domains administrated by IANA.\n" -"\n" -"--min-delay -t 1000 (in milliseconds)\n" -" Set minimum delay to wait before returning any results.\n" -" When this timeout has elapsed, the best current result is returned,\n" -" if any is available.\n" -" Responses arriving after the min-delay has elapsed which have a younger\n" -" age than previous results are returned immediately.\n" -" Note: When a response with age of zero comes in, the result is returned\n" -" immediately and the request is discarded: non-daemon mode exits, daemon\n" -" mode ignores later results.\n" -"\n" -"--timeout -T 1000 (in milliseconds)\n" -" Set timeout after which to stop listening for responses.\n" -" If this is smaller than -t, the value from -t will be used for -T as well.\n" -" Note: When a response with age of zero comes in, the result is returned\n" -" immediately and the request is discarded: non-daemon mode exits, daemon\n" -" mode ignores later results.\n" -"\n" -"--socket -s /path/to/unix-domain-socket\n" -" Listen to requests from and write responses to a UNIX domain socket.\n" -"\n" -"--send -S <query> <age> <ip1> <port1> <ip2> <port2>\n" -" Do not query, but send an mslookup result. This is useful only for\n" -" testing. Examples:\n" -" --send foo.123.msisdn 300 23.42.17.11 1234\n" -" --send foo.123.msisdn 300 2323:4242:1717:1111::42 1234\n" -" --send foo.123.msisdn 300 23.42.17.11 1234 2323:4242:1717:1111::42 1234\n" -"\n" -"--quiet -q\n" -" Do not print errors to stderr, do not log to stderr.\n" -"\n" -"--help -h\n" -" This help\n" -); -} - -enum result_format { - FORMAT_CSV = 0, - FORMAT_JSON, -}; - -static struct { - bool daemon; - struct osmo_sockaddr_str mdns_addr; - uint32_t min_delay; - uint32_t timeout; - const char *socket_path; - const char *format_str; - const char *mdns_domain_suffix; - bool csv_headers; - bool send; - bool quiet; -} cmdline_opts = { - .mdns_addr = { .af=AF_INET, .ip=OSMO_MSLOOKUP_MDNS_IP4, .port=OSMO_MSLOOKUP_MDNS_PORT }, - .min_delay = 1000, - .timeout = 1000, - .csv_headers = true, - .mdns_domain_suffix = OSMO_MDNS_DOMAIN_SUFFIX_DEFAULT, -}; - -#define print_error(fmt, args...) do { \ - if (!cmdline_opts.quiet) \ - fprintf(stderr, fmt, ##args); \ - } while (0) - -char g_buf[1024]; - -long long int parse_int(long long int minval, long long int maxval, const char *arg, int *rc) -{ - long long int val; - char *endptr; - if (rc) - *rc = -1; - if (!arg) - return -1; - errno = 0; - val = strtoll(arg, &endptr, 10); - if (errno || val < minval || val > maxval || *endptr) - return -1; - if (rc) - *rc = 0; - return val; -} - -int cb_doing_nothing(struct osmo_fd *fd, unsigned int what) -{ - return 0; -} - -/* --send: Just send a response, for manual testing. */ -int do_send(int argc, char ** argv) -{ - /* parse args <query> <age> <v4-ip> <v4-port> <v6-ip> <v6-port> */ -#define ARG(NR) ((argc > NR)? argv[NR] : NULL) - const char *query_str = ARG(0); - const char *age_str = ARG(1); - const char *ip_strs[2][2] = { - { ARG(2), ARG(3) }, - { ARG(4), ARG(5) }, - }; - struct osmo_mslookup_query q = {}; - struct osmo_mslookup_result r = { .rc = OSMO_MSLOOKUP_RC_RESULT }; - int i; - int rc; - void *ctx = talloc_named_const(NULL, 0, __func__); - struct osmo_mdns_sock *sock; - - if (!query_str) { - print_error("--send needs a query string like foo.123456.imsi\n"); - return 1; - } - if (osmo_mslookup_query_init_from_domain_str(&q, query_str)) { - print_error("Invalid query string '%s', need a query string like foo.123456.imsi\n", - query_str); - return 1; - } - - if (!age_str) { - print_error("--send needs an age\n"); - return 1; - } - r.age = parse_int(0, UINT32_MAX, age_str, &rc); - if (rc) { - print_error("invalid age\n"); - return 1; - } - - for (i = 0; i < 2; i++) { - struct osmo_sockaddr_str addr; - uint16_t port; - if (!ip_strs[i][0]) - continue; - port = parse_int(1, 65535, ip_strs[i][1] ? : "2342", &rc); - if (rc) { - print_error("invalid port: %s\n", ip_strs[i][1] ? : "NULL"); - return 1; - } - if (osmo_sockaddr_str_from_str(&addr, ip_strs[i][0], port)) { - print_error("invalid IP addr: %s\n", ip_strs[i][0]); - return 1; - } - if (addr.af == AF_INET) - r.host_v4 = addr; - else - r.host_v6 = addr; - } - - printf("Sending mDNS to " OSMO_SOCKADDR_STR_FMT ": %s\n", OSMO_SOCKADDR_STR_FMT_ARGS(&cmdline_opts.mdns_addr), - osmo_mslookup_result_name_c(ctx, &q, &r)); - - rc = 1; - sock = osmo_mdns_sock_init(ctx, cmdline_opts.mdns_addr.ip, cmdline_opts.mdns_addr.port, - cb_doing_nothing, NULL, 0); - if (!sock) { - print_error("unable to open mDNS socket\n"); - goto exit_cleanup; - } - - struct msgb *msg = osmo_mdns_result_encode(ctx, 0, &q, &r, cmdline_opts.mdns_domain_suffix); - if (!msg) { - print_error("unable to encode mDNS response\n"); - goto exit_cleanup; - } - - if (osmo_mdns_sock_send(sock, msg)) { - print_error("unable to send mDNS message\n"); - goto exit_cleanup; - } - - rc = 0; -exit_cleanup: - osmo_mdns_sock_cleanup(sock); - talloc_free(ctx); - return rc; -} - -static struct { - void *ctx; - unsigned int requests_handled; - struct osmo_fd socket_ofd; - struct osmo_mslookup_client *mslookup_client; - struct llist_head queries; - struct llist_head socket_clients; - enum result_format format; -} globals = { - .queries = LLIST_HEAD_INIT(globals.queries), - .socket_clients = LLIST_HEAD_INIT(globals.socket_clients), -}; - -typedef void (*formatter_t)(char *buf, size_t buflen, const char *query_str, const struct osmo_mslookup_result *r); - -void formatter_csv(char *buf, size_t buflen, const char *query_str, const struct osmo_mslookup_result *r) -{ - struct osmo_strbuf sb = { .buf=buf, .len=buflen }; - OSMO_STRBUF_PRINTF(sb, "%s", query_str); - - if (!r) - OSMO_STRBUF_PRINTF(sb, "\tERROR\t\t\t\t\t\t"); - else { - OSMO_STRBUF_PRINTF(sb, "\t%s", osmo_mslookup_result_code_name(r->rc)); - OSMO_STRBUF_PRINTF(sb, "\t%s", r->last ? "last" : "not-last"); - OSMO_STRBUF_PRINTF(sb, "\t%u", r->age); - switch (r->rc) { - case OSMO_MSLOOKUP_RC_RESULT: - if (osmo_sockaddr_str_is_nonzero(&r->host_v4)) - OSMO_STRBUF_PRINTF(sb, "\t%s\t%u", r->host_v4.ip, r->host_v4.port); - else - OSMO_STRBUF_PRINTF(sb, "\t\t"); - if (osmo_sockaddr_str_is_nonzero(&r->host_v6)) - OSMO_STRBUF_PRINTF(sb, "\t%s\t%u", r->host_v6.ip, r->host_v6.port); - else - OSMO_STRBUF_PRINTF(sb, "\t\t"); - break; - default: - OSMO_STRBUF_PRINTF(sb, "\t\t\t\t\t"); - break; - } - } -} - -void formatter_json(char *buf, size_t buflen, const char *query_str, const struct osmo_mslookup_result *r) -{ - struct osmo_strbuf sb = { .buf=buf, .len=buflen }; - OSMO_STRBUF_PRINTF(sb, "{\"query\": \"%s\"", query_str); - - if (!r) - OSMO_STRBUF_PRINTF(sb, ", \"result\": \"ERROR\""); - else { - OSMO_STRBUF_PRINTF(sb, ", \"result\": \"%s\"", osmo_mslookup_result_code_name(r->rc)); - OSMO_STRBUF_PRINTF(sb, ", \"last\": %s", r->last ? "true" : "false"); - OSMO_STRBUF_PRINTF(sb, ", \"age\": %u", r->age); - if (r->rc == OSMO_MSLOOKUP_RC_RESULT) { - if (osmo_sockaddr_str_is_nonzero(&r->host_v4)) - OSMO_STRBUF_PRINTF(sb, ", \"v4\": [\"%s\", \"%u\"]", r->host_v4.ip, r->host_v4.port); - if (osmo_sockaddr_str_is_nonzero(&r->host_v6)) - OSMO_STRBUF_PRINTF(sb, ", \"v6\": [\"%s\", \"%u\"]", r->host_v6.ip, r->host_v6.port); - } - } - OSMO_STRBUF_PRINTF(sb, "}"); -} - -formatter_t formatters[] = { - [FORMAT_CSV] = formatter_csv, - [FORMAT_JSON] = formatter_json, -}; - -void respond_str_stdout(const char *str) { - fprintf(stdout, "%s\n", str); - fflush(stdout); -} - -void start_query_str(const char *query_str); -void start_query_strs(char **query_strs, size_t query_strs_len); - -struct socket_client { - struct llist_head entry; - struct osmo_fd ofd; - char query_str[1024]; -}; - -static void socket_client_close(struct socket_client *c) -{ - struct osmo_fd *ofd = &c->ofd; - - close(ofd->fd); - ofd->fd = -1; - osmo_fd_unregister(ofd); - - llist_del(&c->entry); - talloc_free(c); -} - -void socket_client_respond_result(struct socket_client *c, const char *response) -{ - write(c->ofd.fd, response, strlen(response)); -} - -static int socket_read_cb(struct osmo_fd *ofd) -{ - struct socket_client *c = ofd->data; - int rc; - char rxbuf[1024]; - char *query_with_timeout; - char *query_str; - char *at; - - rc = recv(ofd->fd, rxbuf, sizeof(rxbuf), 0); - if (rc == 0) - goto close; - - if (rc < 0) { - if (errno == EAGAIN) - return 0; - goto close; - } - - if (rc >= sizeof(c->query_str)) - goto close; - - rxbuf[rc] = '\0'; - query_with_timeout = strtok(rxbuf, "\r\n"); - at = strchr(query_with_timeout, '@'); - query_str = at ? at + 1 : query_with_timeout; - - if (c->query_str[0]) { - print_error("ERROR: Only one query per client connect is allowed;" - " received '%s' and '%s' on the same connection\n", - c->query_str, query_str); - formatters[globals.format](g_buf, sizeof(g_buf), query_str, NULL); - socket_client_respond_result(c, g_buf); - return 0; - } - - OSMO_STRLCPY_ARRAY(c->query_str, query_str); - start_query_str(query_with_timeout); - printf("query: %s\n", query_with_timeout); - return rc; - -close: - socket_client_close(c); - return -1; -} - -static int socket_cb(struct osmo_fd *ofd, unsigned int flags) -{ - int rc = 0; - - if (flags & BSC_FD_READ) - rc = socket_read_cb(ofd); - if (rc < 0) - return rc; - - return rc; -} - -int socket_accept(struct osmo_fd *ofd, unsigned int flags) -{ - struct socket_client *c; - struct sockaddr_un un_addr; - socklen_t len; - int rc; - - len = sizeof(un_addr); - rc = accept(ofd->fd, (struct sockaddr*)&un_addr, &len); - if (rc < 0) { - print_error("Failed to accept a new connection\n"); - return -1; - } - - c = talloc_zero(globals.ctx, struct socket_client); - OSMO_ASSERT(c); - c->ofd.fd = rc; - c->ofd.when = BSC_FD_READ; - c->ofd.cb = socket_cb; - c->ofd.data = c; - - if (osmo_fd_register(&c->ofd) != 0) { - print_error("Failed to register new connection fd\n"); - close(c->ofd.fd); - c->ofd.fd = -1; - talloc_free(c); - return -1; - } - - llist_add(&c->entry, &globals.socket_clients); - - if (globals.format == FORMAT_CSV && cmdline_opts.csv_headers) - write(c->ofd.fd, CSV_HEADERS, strlen(CSV_HEADERS)); - - return 0; -} - -int socket_init(const char *sock_path) -{ - struct osmo_fd *ofd = &globals.socket_ofd; - int rc; - - ofd->fd = osmo_sock_unix_init(SOCK_SEQPACKET, 0, sock_path, OSMO_SOCK_F_BIND); - if (ofd->fd < 0) { - print_error("Could not create unix socket: %s: %s\n", sock_path, strerror(errno)); - return -1; - } - - ofd->when = BSC_FD_READ; - ofd->cb = socket_accept; - - rc = osmo_fd_register(ofd); - if (rc < 0) { - print_error("Could not register listen fd: %d\n", rc); - close(ofd->fd); - return rc; - } - return 0; -} - -void socket_close() -{ - struct socket_client *c, *n; - llist_for_each_entry_safe(c, n, &globals.socket_clients, entry) - socket_client_close(c); - if (osmo_fd_is_registered(&globals.socket_ofd)) { - close(globals.socket_ofd.fd); - globals.socket_ofd.fd = -1; - osmo_fd_unregister(&globals.socket_ofd); - } -} - -struct query { - struct llist_head entry; - - char query_str[128]; - struct osmo_mslookup_query query; - uint32_t handle; -}; - -void respond_result(const char *query_str, const struct osmo_mslookup_result *r) -{ - struct socket_client *c, *n; - formatters[globals.format](g_buf, sizeof(g_buf), query_str, r); - respond_str_stdout(g_buf); - - llist_for_each_entry_safe(c, n, &globals.socket_clients, entry) { - if (!strcmp(query_str, c->query_str)) { - socket_client_respond_result(c, g_buf); - if (r->last) - socket_client_close(c); - } - } - if (r->last) - globals.requests_handled++; -} - -void respond_err(const char *query_str) -{ - respond_result(query_str, NULL); -} - -struct query *query_by_handle(uint32_t request_handle) -{ - struct query *q; - llist_for_each_entry(q, &globals.queries, entry) { - if (request_handle == q->handle) - return q; - } - return NULL; -} - -void mslookup_result_cb(struct osmo_mslookup_client *client, - uint32_t request_handle, - const struct osmo_mslookup_query *query, - const struct osmo_mslookup_result *result) -{ - struct query *q = query_by_handle(request_handle); - if (!q) - return; - respond_result(q->query_str, result); - if (result->last) { - llist_del(&q->entry); - talloc_free(q); - } -} - -void start_query_str(const char *query_str) -{ - struct query *q; - const char *domain_str = query_str; - char *at; - struct osmo_mslookup_query_handling h = { - .min_wait_milliseconds = cmdline_opts.min_delay, - .result_timeout_milliseconds = cmdline_opts.timeout, - .result_cb = mslookup_result_cb, - }; - - at = strchr(query_str, '@'); - if (at) { - int rc; - char timeouts[16]; - char *dash; - char *timeout; - - domain_str = at + 1; - - h.min_wait_milliseconds = h.result_timeout_milliseconds = 0; - - if (osmo_print_n(timeouts, sizeof(timeouts), query_str, at - query_str) >= sizeof(timeouts)) { - print_error("ERROR: timeouts part too long in query string\n"); - respond_err(domain_str); - return; - } - - dash = strchr(timeouts, '-'); - if (dash) { - char min_delay[16]; - osmo_print_n(min_delay, sizeof(min_delay), timeouts, dash - timeouts); - h.min_wait_milliseconds = parse_int(0, UINT32_MAX, min_delay, &rc); - if (rc) { - print_error("ERROR: invalid min-delay number: %s\n", min_delay); - respond_err(domain_str); - return; - } - timeout = dash + 1; - } else { - timeout = timeouts; - } - if (*timeout) { - h.result_timeout_milliseconds = parse_int(0, UINT32_MAX, timeout, &rc); - if (rc) { - print_error("ERROR: invalid timeout number: %s\n", timeout); - respond_err(domain_str); - return; - } - } - } - - if (strlen(domain_str) >= sizeof(q->query_str)) { - print_error("ERROR: query string is too long: '%s'\n", domain_str); - respond_err(domain_str); - return; - } - - q = talloc_zero(globals.ctx, struct query); - OSMO_ASSERT(q); - OSMO_STRLCPY_ARRAY(q->query_str, domain_str); - - if (osmo_mslookup_query_init_from_domain_str(&q->query, q->query_str)) { - print_error("ERROR: cannot parse query string: '%s'\n", domain_str); - respond_err(domain_str); - talloc_free(q); - return; - } - - q->handle = osmo_mslookup_client_request(globals.mslookup_client, &q->query, &h); - if (!q->handle) { - print_error("ERROR: cannot send query: '%s'\n", domain_str); - respond_err(domain_str); - talloc_free(q); - return; - } - - llist_add(&q->entry, &globals.queries); -} - -void start_query_strs(char **query_strs, size_t query_strs_len) -{ - int i; - for (i = 0; i < query_strs_len; i++) - start_query_str(query_strs[i]); -} - -int main(int argc, char **argv) -{ - int rc = EXIT_FAILURE; - globals.ctx = talloc_named_const(NULL, 0, "osmo-mslookup-client"); - - osmo_init_logging2(globals.ctx, NULL); - log_set_print_filename2(osmo_stderr_target, LOG_FILENAME_BASENAME); - log_set_print_filename_pos(osmo_stderr_target, LOG_FILENAME_POS_LINE_END); - log_set_print_level(osmo_stderr_target, 1); - log_set_print_category(osmo_stderr_target, 1); - log_set_print_category_hex(osmo_stderr_target, 0); - log_set_print_extended_timestamp(osmo_stderr_target, 1); - log_set_use_color(osmo_stderr_target, 0); - - while (1) { - int c; - long long int val; - char *endptr; - int option_index = 0; - - static struct option long_options[] = { - { "format", 1, 0, 'f' }, - { "no-csv-headers", 0, 0, 'H' }, - { "daemon", 0, 0, 'd' }, - { "mdns-ip", 1, 0, 'm' }, - { "mdns-port", 1, 0, 'M' }, - { "mdns-domain-suffix", 1, 0, 'D' }, - { "timeout", 1, 0, 'T' }, - { "min-delay", 1, 0, 't' }, - { "socket", 1, 0, 's' }, - { "send", 0, 0, 'S' }, - { "quiet", 0, 0, 'q' }, - { "help", 0, 0, 'h' }, - { "version", 0, 0, 'V' }, - {} - }; - -#define PARSE_INT(TARGET, MINVAL, MAXVAL) do { \ - int _rc; \ - TARGET = parse_int(MINVAL, MAXVAL, optarg, &_rc); \ - if (_rc) { \ - print_error("Invalid " #TARGET ": %s\n", optarg); \ - goto program_exit; \ - } \ - } while (0) - - c = getopt_long(argc, argv, "f:Hdm:M:D:t:T:s:SqhV", long_options, &option_index); - - if (c == -1) - break; - - switch (c) { - case 'f': - cmdline_opts.format_str = optarg; - break; - case 'H': - cmdline_opts.csv_headers = false; - break; - case 'd': - cmdline_opts.daemon = true; - break; - case 'm': - if (osmo_sockaddr_str_from_str(&cmdline_opts.mdns_addr, optarg, cmdline_opts.mdns_addr.port) - || !osmo_sockaddr_str_is_nonzero(&cmdline_opts.mdns_addr)) { - print_error("Invalid mDNS IP address: %s\n", optarg); - goto program_exit; - } - break; - case 'M': - PARSE_INT(cmdline_opts.mdns_addr.port, 1, 65535); - break; - case 'D': - cmdline_opts.mdns_domain_suffix = optarg; - break; - case 't': - PARSE_INT(cmdline_opts.min_delay, 0, UINT32_MAX); - break; - case 'T': - PARSE_INT(cmdline_opts.timeout, 0, UINT32_MAX); - break; - case 's': - cmdline_opts.socket_path = optarg; - break; - case 'S': - cmdline_opts.send = true; - break; - case 'q': - cmdline_opts.quiet = true; - break; - - case 'h': - print_help(); - rc = 0; - goto program_exit; - case 'V': - print_version(); - rc = 0; - goto program_exit; - - default: - /* catch unknown options *as well as* missing arguments. */ - print_error("Error in command line options. Exiting.\n"); - goto program_exit; - } - } - - if (cmdline_opts.send) { - if (cmdline_opts.daemon || cmdline_opts.format_str || cmdline_opts.socket_path) { - print_error("--send option cannot have any listening related args."); - } - rc = do_send(argc - optind, argv + optind); - goto program_exit; - } - - if (!cmdline_opts.daemon && !(argc - optind)) { - print_help(); - goto program_exit; - } - - if (cmdline_opts.daemon && !cmdline_opts.timeout) { - print_error("In daemon mode, --timeout must not be zero.\n"); - goto program_exit; - } - - if (cmdline_opts.quiet) - log_target_destroy(osmo_stderr_target); - - if (cmdline_opts.format_str) { - if (osmo_str_startswith("json", cmdline_opts.format_str)) - globals.format = FORMAT_JSON; - else if (osmo_str_startswith("csv", cmdline_opts.format_str)) - globals.format = FORMAT_CSV; - else { - print_error("Invalid format: %s\n", cmdline_opts.format_str); - goto program_exit; - } - } - - if (globals.format == FORMAT_CSV && cmdline_opts.csv_headers) - respond_str_stdout(CSV_HEADERS); - - globals.mslookup_client = osmo_mslookup_client_new(globals.ctx); - if (!globals.mslookup_client - || !osmo_mslookup_client_add_mdns(globals.mslookup_client, - cmdline_opts.mdns_addr.ip, cmdline_opts.mdns_addr.port, - -1, cmdline_opts.mdns_domain_suffix)) { - print_error("Failed to start mDNS client\n"); - goto program_exit; - } - - if (cmdline_opts.socket_path) { - if (socket_init(cmdline_opts.socket_path)) - goto program_exit; - } - - start_query_strs(&argv[optind], argc - optind); - - while (1) { - osmo_select_main_ctx(0); - - if (!cmdline_opts.daemon - && globals.requests_handled - && llist_empty(&globals.queries)) - break; - } - - rc = 0; -program_exit: - osmo_mslookup_client_free(globals.mslookup_client); - socket_close(); - log_fini(); - talloc_free(globals.ctx); - return rc; -} |