diff options
Diffstat (limited to 'tests/server')
| -rw-r--r-- | tests/server/Makefile.inc | 9 | ||||
| -rw-r--r-- | tests/server/mqttd.c | 977 | ||||
| -rw-r--r-- | tests/server/util.c | 16 | ||||
| -rw-r--r-- | tests/server/util.h | 6 |
4 files changed, 1001 insertions, 7 deletions
diff --git a/tests/server/Makefile.inc b/tests/server/Makefile.inc index a865ee509..fb13d79cb 100644 --- a/tests/server/Makefile.inc +++ b/tests/server/Makefile.inc @@ -20,7 +20,8 @@ # ########################################################################### -noinst_PROGRAMS = getpart resolve rtspd sockfilt sws tftpd fake_ntlm socksd disabled +noinst_PROGRAMS = getpart resolve rtspd sockfilt sws tftpd fake_ntlm \ + socksd disabled mqttd CURLX_SRCS = \ ../../lib/mprintf.c \ @@ -78,6 +79,12 @@ socksd_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ socksd_LDADD = @CURL_NETWORK_AND_TIME_LIBS@ socksd_CFLAGS = $(AM_CFLAGS) +mqttd_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ + server_sockaddr.h mqttd.c \ + ../../lib/inet_pton.c +mqttd_LDADD = @CURL_NETWORK_AND_TIME_LIBS@ +mqttd_CFLAGS = $(AM_CFLAGS) + sws_SOURCES = $(CURLX_SRCS) $(CURLX_HDRS) $(USEFUL) $(UTIL) \ server_sockaddr.h \ sws.c \ diff --git a/tests/server/mqttd.c b/tests/server/mqttd.c new file mode 100644 index 000000000..435df69a1 --- /dev/null +++ b/tests/server/mqttd.c @@ -0,0 +1,977 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al. + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at https://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ***************************************************************************/ +#include "server_setup.h" +#include <stdlib.h> +#include <string.h> +#include "util.h" + +/* Function + * + * Accepts a TCP connection on a custom port (IPv4 or IPv6). Speaks MQTT. + * + * Read commands from FILE (set with --config). The commands control how to + * act and is reset to defaults each client TCP connect. + * + * Config file keywords: + * + * TODO + */ + +/* based on sockfilt.c */ + +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_NETINET_IN6_H +#include <netinet/in6.h> +#endif +#ifdef HAVE_ARPA_INET_H +#include <arpa/inet.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif + +#define ENABLE_CURLX_PRINTF +/* make the curlx header define all printf() functions to use the curlx_* + versions instead */ +#include "curlx.h" /* from the private lib dir */ +#include "getpart.h" +#include "inet_pton.h" +#include "util.h" +#include "server_sockaddr.h" +#include "warnless.h" + +/* include memdebug.h last */ +#include "memdebug.h" + +#ifdef USE_WINSOCK +#undef EINTR +#define EINTR 4 /* errno.h value */ +#undef EAGAIN +#define EAGAIN 11 /* errno.h value */ +#undef ENOMEM +#define ENOMEM 12 /* errno.h value */ +#undef EINVAL +#define EINVAL 22 /* errno.h value */ +#endif + +#define DEFAULT_PORT 1883 /* MQTT default port */ + +#ifndef DEFAULT_LOGFILE +#define DEFAULT_LOGFILE "log/mqttd.log" +#endif + +#ifndef DEFAULT_CONFIG +#define DEFAULT_CONFIG "mqttd.config" +#endif + +#define MQTT_MSG_CONNECT 0x10 +#define MQTT_MSG_CONNACK 0x20 +#define MQTT_MSG_PUBLISH 0x30 +#define MQTT_MSG_PUBACK 0x40 +#define MQTT_MSG_SUBSCRIBE 0x82 +#define MQTT_MSG_SUBACK 0x90 +#define MQTT_MSG_DISCONNECT 0xe0 + +#define MQTT_CONNACK_LEN 4 +#define MQTT_SUBACK_LEN 5 +#define MQTT_CLIENTID_LEN 12 /* "curl0123abcd" */ +#define MQTT_HEADER_LEN 5 /* max 5 bytes */ + +struct configurable { + unsigned char version; /* initial version byte in the request must match + this */ +}; + +#define REQUEST_DUMP "log/server.input" +#define CONFIG_VERSION 5 + +static struct configurable config; + +const char *serverlogfile = DEFAULT_LOGFILE; +static const char *configfile = DEFAULT_CONFIG; + +#ifdef ENABLE_IPV6 +static bool use_ipv6 = FALSE; +#endif +static const char *ipv_inuse = "IPv4"; +static unsigned short port = DEFAULT_PORT; + +static void resetdefaults(void) +{ + logmsg("Reset to defaults"); + config.version = CONFIG_VERSION; +} + +static unsigned char byteval(char *value) +{ + unsigned long num = strtoul(value, NULL, 10); + return num & 0xff; +} + +static void getconfig(void) +{ + FILE *fp = fopen(configfile, FOPEN_READTEXT); + resetdefaults(); + if(fp) { + char buffer[512]; + logmsg("parse config file"); + while(fgets(buffer, sizeof(buffer), fp)) { + char key[32]; + char value[32]; + if(2 == sscanf(buffer, "%31s %31s", key, value)) { + if(!strcmp(key, "version")) { + config.version = byteval(value); + logmsg("version [%d] set", config.version); + } + } + } + fclose(fp); + } +} + +static void loghex(unsigned char *buffer, ssize_t len) +{ + char data[12000]; + ssize_t i; + unsigned char *ptr = buffer; + char *optr = data; + ssize_t width = 0; + int left = sizeof(data); + + for(i = 0; i<len && (left >= 0); i++) { + msnprintf(optr, left, "%02x", ptr[i]); + width += 2; + optr += 2; + left -= 2; + } + if(width) + logmsg("'%s'", data); +} + +typedef enum { + FROM_CLIENT, + FROM_SERVER +} mqttdir; + +static void logprotocol(mqttdir dir, + const char *prefix, size_t remlen, + FILE *output, + unsigned char *buffer, ssize_t len) +{ + char data[12000] = ""; + ssize_t i; + unsigned char *ptr = buffer; + char *optr = data; + ssize_t width = 0; + int left = sizeof(data); + + for(i = 0; i<len && (left >= 0); i++) { + msnprintf(optr, left, "%02x", ptr[i]); + width += 2; + optr += 2; + left -= 2; + } + fprintf(output, "%s %s %zx %s\n", + dir == FROM_CLIENT? "client": "server", + prefix, remlen, + data); +} + + +/* return 0 on success */ +static int connack(FILE *dump, curl_socket_t fd) +{ + unsigned char packet[]={ + MQTT_MSG_CONNACK, 0x02, + 0x00, 0x00 + }; + ssize_t rc = swrite(fd, (char *)packet, sizeof(packet)); + if(rc == sizeof(packet)) { + logmsg("WROTE %d bytes [CONACK]", rc); + loghex(packet, rc); + logprotocol(FROM_SERVER, "CONACK", 2, dump, packet, sizeof(packet)); + return 0; + } + return 1; +} + +/* return 0 on success */ +static int suback(FILE *dump, curl_socket_t fd, unsigned short packetid) +{ + unsigned char packet[]={ + MQTT_MSG_SUBACK, 0x03, + 0, 0, /* filled in below */ + 0x00 + }; + ssize_t rc; + packet[2] = (unsigned char)(packetid >> 8); + packet[3] = (unsigned char)(packetid & 0xff); + + rc = swrite(fd, (char *)packet, sizeof(packet)); + if(rc == sizeof(packet)) { + logmsg("WROTE %d bytes [SUBACK]", rc); + loghex(packet, rc); + logprotocol(FROM_SERVER, "SUBACK", 3, dump, packet, rc); + return 0; + } + return 1; +} + +#ifdef QOS +/* return 0 on success */ +static int puback(FILE *dump, curl_socket_t fd, unsigned short packetid) +{ + unsigned char packet[]={ + MQTT_MSG_PUBACK, 0x00, + 0, 0 /* filled in below */ + }; + ssize_t rc; + packet[2] = (unsigned char)(packetid >> 8); + packet[3] = (unsigned char)(packetid & 0xff); + + rc = swrite(fd, (char *)packet, sizeof(packet)); + if(rc == sizeof(packet)) { + logmsg("WROTE %d bytes [PUBACK]", rc); + loghex(packet, rc); + logprotocol(FROM_SERVER, dump, packet, rc); + return 0; + } + logmsg("Failed sending [PUBACK]"); + return 1; +} +#endif + +/* return 0 on success */ +static int disconnect(FILE *dump, curl_socket_t fd) +{ + unsigned char packet[]={ + MQTT_MSG_DISCONNECT, 0x00, + }; + ssize_t rc = swrite(fd, (char *)packet, sizeof(packet)); + if(rc == sizeof(packet)) { + logmsg("WROTE %d bytes [DISCONNECT]", rc); + loghex(packet, rc); + logprotocol(FROM_SERVER, "DISCONNECT", 0, dump, packet, rc); + return 0; + } + logmsg("Failed sending [DISCONNECT]"); + return 1; +} + + + +/* + do + + encodedByte = X MOD 128 + + X = X DIV 128 + + // if there are more data to encode, set the top bit of this byte + + if ( X > 0 ) + + encodedByte = encodedByte OR 128 + + endif + + 'output' encodedByte + + while ( X > 0 ) + +*/ + +/* return number of bytes used */ +static int encode_length(size_t packetlen, char *remlength) /* 4 bytes */ +{ + int bytes = 0; + unsigned char encode; + + do { + encode = packetlen % 0x80; + packetlen /= 0x80; + if(packetlen) + encode |= 0x80; + + remlength[bytes++] = encode; + + if(bytes > 3) { + logmsg("too large packet!"); + return 0; + } + } while(packetlen); + + return bytes; +} + + +static size_t decode_length(unsigned char *buf, + size_t buflen, size_t *lenbytes) +{ + size_t len = 0; + size_t mult = 1; + size_t i; + unsigned char encoded = 0x80; + + for(i = 0; (i < buflen) && (encoded & 0x80); i++) { + encoded = buf[i]; + len += (encoded & 0x7f) * mult; + mult *= 0x80; + } + + if(lenbytes) + *lenbytes = i; + + return len; +} + + +/* return 0 on success */ +static int publish(FILE *dump, + curl_socket_t fd, unsigned short packetid, + char *topic, char *payload, size_t payloadlen) +{ + size_t topiclen = strlen(topic); + unsigned char *packet; + size_t payloadindex; + ssize_t remaininglength = topiclen + 2 + payloadlen; + ssize_t packetlen; + ssize_t rc; + char rembuffer[4]; + int encodedlen; + + encodedlen = encode_length(remaininglength, rembuffer); + + /* one packet type byte (possibly two more for packetid) */ + packetlen = remaininglength + encodedlen + 1; + packet = malloc(packetlen); + if(!packet) + return 1; + + packet[0] = MQTT_MSG_PUBLISH; /* TODO: set QoS? */ + memcpy(&packet[1], rembuffer, encodedlen); + + (void)packetid; + /* packet_id if QoS is set */ + + packet[1 + encodedlen] = (unsigned char)(topiclen >> 8); + packet[2 + encodedlen] = (unsigned char)(topiclen & 0xff); + memcpy(&packet[3 + encodedlen], topic, topiclen); + + payloadindex = 3 + topiclen + encodedlen; + memcpy(&packet[payloadindex], payload, payloadlen); + + rc = swrite(fd, (char *)packet, packetlen); + if(rc == packetlen) { + logmsg("WROTE %d bytes [PUBLISH]", rc); + loghex(packet, rc); + logprotocol(FROM_SERVER, "PUBLISH", remaininglength, dump, packet, rc); + return 0; + } + return 1; +} + +#define MAX_TOPIC_LENGTH 65535 +#define MAX_CLIENT_ID_LENGTH 32 + +static char topic[MAX_TOPIC_LENGTH + 1]; + +static int fixedheader(curl_socket_t fd, + unsigned char *bytep, + size_t *remaining_lengthp, + size_t *remaining_length_bytesp) +{ + /* get the fixed header */ + unsigned char buffer[10]; + + /* get the first two bytes */ + ssize_t rc = sread(fd, (char *)buffer, 2); + int i; + if(rc < 2) { + logmsg("READ %d bytes [SHORT!]", rc); + return 1; /* fail */ + } + logmsg("READ %d bytes", rc); + loghex(buffer, rc); + *bytep = buffer[0]; + + /* if the length byte has the top bit set, get the next one too */ + i = 1; + while(buffer[i] & 0x80) { + i++; + rc = sread(fd, (char *)&buffer[i], 1); + if(rc != 1) { + logmsg("Remaining Length broken"); + return 1; + } + } + *remaining_lengthp = decode_length(&buffer[1], i, remaining_length_bytesp); + logmsg("Remaining Length: %ld [%d bytes]", (long) *remaining_lengthp, + *remaining_length_bytesp); + return 0; +} + +static curl_socket_t mqttit(curl_socket_t fd) +{ + unsigned char buffer[10*1024]; + ssize_t rc; + unsigned char byte; + unsigned short packet_id; + size_t payload_len; + unsigned int topic_len; + size_t remaining_length = 0; + size_t bytes = 0; /* remaining length field size in bytes */ + char client_id[MAX_CLIENT_ID_LENGTH]; + char *filename; + long testno; + + static const char protocol[7] = { + 0x00, 0x04, /* protocol length */ + 'M','Q','T','T', /* protocol name */ + 0x04 /* protocol level */ + }; + FILE *dump = fopen(REQUEST_DUMP, "ab"); + if(!dump) + goto end; + + getconfig(); + + do { + /* get the fixed header */ + rc = fixedheader(fd, &byte, &remaining_length, &bytes); + if(rc) + break; + if(remaining_length) { + rc = sread(fd, (char *)buffer, remaining_length); + if(rc > 0) { + logmsg("READ %d bytes", rc); + loghex(buffer, rc); + } + } + + if(byte == MQTT_MSG_CONNECT) { + logprotocol(FROM_CLIENT, "CONNECT", remaining_length, + dump, buffer, rc); + + if(memcmp(protocol, buffer, sizeof(protocol))) { + logmsg("Protocol preamble mismatch"); + goto end; + } + /* ignore the connect flag byte and two keepalive bytes */ + + payload_len = (buffer[10] << 8) | buffer[11]; + if((ssize_t)payload_len != (rc - 12)) { + logmsg("Payload length mismatch, expected %x got %x", + rc - 12, payload_len); + goto end; + } + else if((payload_len + 1) > MAX_CLIENT_ID_LENGTH) { + logmsg("Too large client id"); + goto end; + } + memcpy(client_id, &buffer[14], payload_len); + client_id[payload_len] = 0; + + logmsg("MQTT client connect accepted: %s", client_id); + + /* The first packet sent from the Server to the Client MUST be a + CONNACK Packet */ + + if(connack(dump, fd)) { + logmsg("failed sending CONNACK"); + goto end; + } + } + else if(byte == MQTT_MSG_SUBSCRIBE) { + char *testnop; + + logprotocol(FROM_CLIENT, "SUBSCRIBE", remaining_length, + dump, buffer, rc); + logmsg("Incoming SUBSCRIBE"); + + if(rc < 6) { + logmsg("Too small SUBSCRIBE"); + goto end; + } + + /* two bytes packet id */ + packet_id = (unsigned short)((buffer[0] << 8) | buffer[1]); + + /* two bytes topic length */ + topic_len = (buffer[2] << 8) | buffer[3]; + if(topic_len != (remaining_length - 5)) { + logmsg("Wrong topic length, got %d expected %d", + topic_len, remaining_length - 5); + goto end; + } + memcpy(topic, &buffer[4], topic_len); + topic[topic_len] = 0; + + /* there's a QoS byte (two bits) after the topic */ + + logmsg("SUBSCRIBE to '%s' [%d]", topic, packet_id); + if(suback(dump, fd, packet_id)) { + logmsg("failed sending SUBACK"); + goto end; + } + testnop = strrchr(topic, '/'); + if(!testnop) + testnop = topic; + else + testnop++; /* pass the slash */ + testno = strtol(testnop, NULL, 10); + if(testno) { + FILE *stream; + int error; + char *data; + size_t datalen; + logmsg("Found test number %ld", testno); + filename = test2file(testno); + stream = fopen(filename, "rb"); + error = getpart(&data, &datalen, "reply", "data", stream); + if(!error) + publish(dump, fd, packet_id, topic, data, datalen); + } + else { + char *def = (char *)"this is random payload yes yes it is"; + publish(dump, fd, packet_id, topic, def, strlen(def)); + } + disconnect(dump, fd); + } + else if((byte & 0xf0) == (MQTT_MSG_PUBLISH & 0xf0)) { + size_t topiclen; + + logmsg("Incoming PUBLISH"); + logprotocol(FROM_CLIENT, "PUBLISH", remaining_length, + dump, buffer, rc); + + topiclen = (buffer[1 + bytes] << 8) | buffer[2 + bytes]; + logmsg("Got %d bytes topic", topiclen); + /* TODO: verify topiclen */ + +#ifdef QOS + /* TODO: handle packetid if there is one. Send puback if QoS > 0 */ + puback(dump, fd, 0); +#endif + /* expect a disconnect here */ + /* get the request */ + rc = sread(fd, (char *)&buffer[0], 2); + + logmsg("READ %d bytes [DISCONNECT]", rc); + loghex(buffer, rc); + logprotocol(FROM_CLIENT, "DISCONNECT", 0, dump, buffer, rc); + goto end; + } + else { + /* not supported (yet) */ + goto end; + } + } while(1); + + end: + fclose(dump); + return CURL_SOCKET_BAD; +} + +/* + sockfdp is a pointer to an established stream or CURL_SOCKET_BAD + + if sockfd is CURL_SOCKET_BAD, listendfd is a listening socket we must + accept() +*/ +static bool incoming(curl_socket_t listenfd) +{ + fd_set fds_read; + fd_set fds_write; + fd_set fds_err; + int clients = 0; /* connected clients */ + + if(got_exit_signal) { + logmsg("signalled to die, exiting..."); + return FALSE; + } + +#ifdef HAVE_GETPPID + /* As a last resort, quit if socks5 process becomes orphan. */ + if(getppid() <= 1) { + logmsg("process becomes orphan, exiting"); + return FALSE; + } +#endif + + do { + ssize_t rc; + int error = 0; + curl_socket_t sockfd = listenfd; + int maxfd = (int)sockfd; + + FD_ZERO(&fds_read); + FD_ZERO(&fds_write); + FD_ZERO(&fds_err); + + /* there's always a socket to wait for */ + FD_SET(sockfd, &fds_read); + + do { + /* select() blocking behavior call on blocking descriptors please */ + rc = select(maxfd + 1, &fds_read, &fds_write, &fds_err, NULL); + if(got_exit_signal) { + logmsg("signalled to die, exiting..."); + return FALSE; + } + } while((rc == -1) && ((error = errno) == EINTR)); + + if(rc < 0) { + logmsg("select() failed with error: (%d) %s", + error, strerror(error)); + return FALSE; + } + + if(FD_ISSET(sockfd, &fds_read)) { + curl_socket_t newfd = accept(sockfd, NULL, NULL); + if(CURL_SOCKET_BAD == newfd) { + error = SOCKERRNO; + logmsg("accept(%d, NULL, NULL) failed with error: (%d) %s", + sockfd, error, strerror(error)); + } + else { + logmsg("====> Client connect, fd %d. Read config from %s", + newfd, configfile); + set_advisor_read_lock(SERVERLOGS_LOCK); + (void)mqttit(newfd); /* until done */ + clear_advisor_read_lock(SERVERLOGS_LOCK); + + logmsg("====> Client disconnect"); + sclose(newfd); + } + } + } while(clients); + + return TRUE; +} + +static curl_socket_t sockdaemon(curl_socket_t sock, + unsigned short *listenport) +{ + /* passive daemon style */ + srvr_sockaddr_union_t listener; + int flag; + int rc; + int totdelay = 0; + int maxretr = 10; + int delay = 20; + int attempt = 0; + int error = 0; + + do { + attempt++; + flag = 1; + rc = setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, + (void *)&flag, sizeof(flag)); + if(rc) { + error = SOCKERRNO; + logmsg("setsockopt(SO_REUSEADDR) failed with error: (%d) %s", + error, strerror(error)); + if(maxretr) { + rc = wait_ms(delay); + if(rc) { + /* should not happen */ + error = errno; + logmsg("wait_ms() failed with error: (%d) %s", + error, strerror(error)); + sclose(sock); + return CURL_SOCKET_BAD; + } + if(got_exit_signal) { + logmsg("signalled to die, exiting..."); + sclose(sock); + return CURL_SOCKET_BAD; + } + totdelay += delay; + delay *= 2; /* double the sleep for next attempt */ + } + } + } while(rc && maxretr--); + + if(rc) { + logmsg("setsockopt(SO_REUSEADDR) failed %d times in %d ms. Error: (%d) %s", + attempt, totdelay, error, strerror(error)); + logmsg("Continuing anyway..."); + } + + /* When the specified listener port is zero, it is actually a + request to let the system choose a non-zero available port. */ + +#ifdef ENABLE_IPV6 + if(!use_ipv6) { +#endif + memset(&listener.sa4, 0, sizeof(listener.sa4)); + listener.sa4.sin_family = AF_INET; + listener.sa4.sin_addr.s_addr = INADDR_ANY; + listener.sa4.sin_port = htons(*listenport); + rc = bind(sock, &listener.sa, sizeof(listener.sa4)); +#ifdef ENABLE_IPV6 + } + else { + memset(&listener.sa6, 0, sizeof(listener.sa6)); + listener.sa6.sin6_family = AF_INET6; + listener.sa6.sin6_addr = in6addr_any; + listener.sa6.sin6_port = htons(*listenport); + rc = bind(sock, &listener.sa, sizeof(listener.sa6)); + } +#endif /* ENABLE_IPV6 */ + if(rc) { + error = SOCKERRNO; + logmsg("Error binding socket on port %hu: (%d) %s", + *listenport, error, strerror(error)); + sclose(sock); + return CURL_SOCKET_BAD; + } + + if(!*listenport) { + /* The system was supposed to choose a port number, figure out which + port we actually got and update the listener port value with it. */ + curl_socklen_t la_size; + srvr_sockaddr_union_t localaddr; +#ifdef ENABLE_IPV6 + if(!use_ipv6) +#endif + la_size = sizeof(localaddr.sa4); +#ifdef ENABLE_IPV6 + else + la_size = sizeof(localaddr.sa6); +#endif + memset(&localaddr.sa, 0, (size_t)la_size); + if(getsockname(sock, &localaddr.sa, &la_size) < 0) { + error = SOCKERRNO; + logmsg("getsockname() failed with error: (%d) %s", + error, strerror(error)); + sclose(sock); + return CURL_SOCKET_BAD; + } + switch(localaddr.sa.sa_family) { + case AF_INET: + *listenport = ntohs(localaddr.sa4.sin_port); + break; +#ifdef ENABLE_IPV6 + case AF_INET6: + *listenport = ntohs(localaddr.sa6.sin6_port); + break; +#endif + default: + break; + } + if(!*listenport) { + /* Real failure, listener port shall not be zero beyond this point. */ + logmsg("Apparently getsockname() succeeded, with listener port zero."); + logmsg("A valid reason for this failure is a binary built without"); + logmsg("proper network library linkage. This might not be the only"); + logmsg("reason, but double check it before anything else."); + sclose(sock); + return CURL_SOCKET_BAD; + } + } + + /* start accepting connections */ + rc = listen(sock, 5); + if(0 != rc) { + error = SOCKERRNO; + logmsg("listen(%d, 5) failed with error: (%d) %s", + sock, error, strerror(error)); + sclose(sock); + return CURL_SOCKET_BAD; + } + + return sock; +} + + +int main(int argc, char *argv[]) +{ + curl_socket_t sock = CURL_SOCKET_BAD; + curl_socket_t msgsock = CURL_SOCKET_BAD; + int wrotepidfile = 0; + int wroteportfile = 0; + const char *pidname = ".mqttd.pid"; + const char *portname = ".mqttd.port"; + bool juggle_again; + int error; + int arg = 1; + + while(argc>arg) { + if(!strcmp("--version", argv[arg])) { + printf("mqttd IPv4%s\n", +#ifdef ENABLE_IPV6 + "/IPv6" +#else + "" +#endif + ); + return 0; + } + else if(!strcmp("--pidfile", argv[arg])) { + arg++; + if(argc>arg) + pidname = argv[arg++]; + } + else if(!strcmp("--portfile", argv[arg])) { + arg++; + if(argc>arg) + portname = argv[arg++]; + } + else if(!strcmp("--config", argv[arg])) { + arg++; + if(argc>arg) + configfile = argv[arg++]; + } + else if(!strcmp("--logfile", argv[arg])) { + arg++; + if(argc>arg) + serverlogfile = argv[arg++]; + } + else if(!strcmp("--ipv6", argv[arg])) { +#ifdef ENABLE_IPV6 + ipv_inuse = "IPv6"; + use_ipv6 = TRUE; +#endif + arg++; + } + else if(!strcmp("--ipv4", argv[arg])) { + /* for completeness, we support this option as well */ +#ifdef ENABLE_IPV6 + ipv_inuse = "IPv4"; + use_ipv6 = FALSE; +#endif + arg++; + } + else if(!strcmp("--port", argv[arg])) { + arg++; + if(argc>arg) { + char *endptr; + unsigned long ulnum = strtoul(argv[arg], &endptr, 10); + if((endptr != argv[arg] + strlen(argv[arg])) || + ((ulnum != 0UL) && ((ulnum < 1025UL) || (ulnum > 65535UL)))) { + fprintf(stderr, "mqttd: invalid --port argument (%s)\n", + argv[arg]); + return 0; + } + port = curlx_ultous(ulnum); + arg++; + } + } + else { + puts("Usage: mqttd [option]\n" + " --config [file]\n" + " --version\n" + " --logfile [file]\n" + " --pidfile [file]\n" + " --ipv4\n" + " --ipv6\n" + " --port [port]\n"); + return 0; + } + } + +#ifdef WIN32 + win32_init(); + atexit(win32_cleanup); + + setmode(fileno(stdin), O_BINARY); + setmode(fileno(stdout), O_BINARY); + setmode(fileno(stderr), O_BINARY); +#endif + + install_signal_handlers(FALSE); + +#ifdef ENABLE_IPV6 + if(!use_ipv6) +#endif + sock = socket(AF_INET, SOCK_STREAM, 0); +#ifdef ENABLE_IPV6 + else + sock = socket(AF_INET6, SOCK_STREAM, 0); +#endif + + if(CURL_SOCKET_BAD == sock) { + error = SOCKERRNO; + logmsg("Error creating socket: (%d) %s", + error, strerror(error)); + goto mqttd_cleanup; + } + + { + /* passive daemon style */ + sock = sockdaemon(sock, &port); + if(CURL_SOCKET_BAD == sock) { + goto mqttd_cleanup; + } + msgsock = CURL_SOCKET_BAD; /* no stream socket yet */ + } + + logmsg("Running %s version", ipv_inuse); + logmsg("Listening on port %hu", port); + + wrotepidfile = write_pidfile(pidname); + if(!wrotepidfile) { + goto mqttd_cleanup; + } + + wroteportfile = write_portfile(portname, (int)port); + if(!wroteportfile) { + goto mqttd_cleanup; + } + + do { + juggle_again = incoming(sock); + } while(juggle_again); + +mqttd_cleanup: + + if((msgsock != sock) && (msgsock != CURL_SOCKET_BAD)) + sclose(msgsock); + + if(sock != CURL_SOCKET_BAD) + sclose(sock); + + if(wrotepidfile) + unlink(pidname); + + restore_signal_handlers(FALSE); + + if(got_exit_signal) { + logmsg("============> mqttd exits with signal (%d)", exit_signal); + /* + * To properly set the return status of the process we + * must raise the same signal SIGINT or SIGTERM that we + * caught and let the old handler take care of it. + */ + raise(exit_signal); + } + + logmsg("============> mqttd quits"); + return 0; +} diff --git a/tests/server/util.c b/tests/server/util.c index 65d491c0b..169ca5bcb 100644 --- a/tests/server/util.c +++ b/tests/server/util.c @@ -5,7 +5,7 @@ * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * - * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al. + * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms @@ -284,6 +284,20 @@ int write_pidfile(const char *filename) return 1; /* success */ } +/* store the used port number in a file */ +int write_portfile(const char *filename, int port) +{ + FILE *portfile = fopen(filename, "wb"); + if(!portfile) { + logmsg("Couldn't write port file: %s %s", filename, strerror(errno)); + return 0; /* fail */ + } + fprintf(portfile, "%d\n", port); + fclose(portfile); + logmsg("Wrote port %d to %s", port, filename); + return 1; /* success */ +} + void set_advisor_read_lock(const char *filename) { FILE *lockfile; diff --git a/tests/server/util.h b/tests/server/util.h index 0446b6a84..9c3fb9f32 100644 --- a/tests/server/util.h +++ b/tests/server/util.h @@ -55,15 +55,11 @@ void win32_cleanup(void); /* returns the path name to the test case file */ char *test2file(long testno); - int wait_ms(int timeout_ms); - int write_pidfile(const char *filename); - +int write_portfile(const char *filename, int port); void set_advisor_read_lock(const char *filename); - void clear_advisor_read_lock(const char *filename); - int strncasecompare(const char *first, const char *second, size_t max); /* global variable which if set indicates that the program should finish */ |