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Diffstat (limited to 'src/smtpstone/qmqp-source.c')
| -rw-r--r-- | src/smtpstone/qmqp-source.c | 673 |
1 files changed, 673 insertions, 0 deletions
diff --git a/src/smtpstone/qmqp-source.c b/src/smtpstone/qmqp-source.c new file mode 100644 index 0000000..9231aec --- /dev/null +++ b/src/smtpstone/qmqp-source.c @@ -0,0 +1,673 @@ +/*++ +/* NAME +/* qmqp-source 1 +/* SUMMARY +/* parallelized QMQP test generator +/* SYNOPSIS +/* .fi +/* \fBqmqp-source\fR [\fIoptions\fR] [\fBinet:\fR]\fIhost\fR[:\fIport\fR] +/* +/* \fBqmqp-source\fR [\fIoptions\fR] \fBunix:\fIpathname\fR +/* DESCRIPTION +/* \fBqmqp-source\fR connects to the named host and TCP port (default 628) +/* and sends one or more messages to it, either sequentially +/* or in parallel. The program speaks the QMQP protocol. +/* Connections can be made to UNIX-domain and IPv4 or IPv6 servers. +/* IPv4 and IPv6 are the default. +/* +/* Note: this is an unsupported test program. No attempt is made +/* to maintain compatibility between successive versions. +/* +/* Arguments: +/* .IP \fB-4\fR +/* Connect to the server with IPv4. This option has no effect when +/* Postfix is built without IPv6 support. +/* .IP \fB-6\fR +/* Connect to the server with IPv6. This option is not available when +/* Postfix is built without IPv6 support. +/* .IP \fB-c\fR +/* Display a running counter that is incremented each time +/* a delivery completes. +/* .IP "\fB-C \fIcount\fR" +/* When a host sends RESET instead of SYN|ACK, try \fIcount\fR times +/* before giving up. The default count is 1. Specify a larger count in +/* order to work around a problem with TCP/IP stacks that send RESET +/* when the listen queue is full. +/* .IP "\fB-f \fIfrom\fR" +/* Use the specified sender address (default: <foo@myhostname>). +/* .IP "\fB-l \fIlength\fR" +/* Send \fIlength\fR bytes as message payload. The length +/* includes the message headers. +/* .IP "\fB-m \fImessage_count\fR" +/* Send the specified number of messages (default: 1). +/* .IP "\fB-M \fImyhostname\fR" +/* Use the specified hostname or [address] in the default +/* sender and recipient addresses, instead of the machine +/* hostname. +/* .IP "\fB-r \fIrecipient_count\fR" +/* Send the specified number of recipients per transaction (default: 1). +/* Recipient names are generated by prepending a number to the +/* recipient address. +/* .IP "\fB-s \fIsession_count\fR" +/* Run the specified number of QMQP sessions in parallel (default: 1). +/* .IP "\fB-t \fIto\fR" +/* Use the specified recipient address (default: <foo@myhostname>). +/* .IP "\fB-R \fIinterval\fR" +/* Wait for a random period of time 0 <= n <= interval between messages. +/* Suspending one thread does not affect other delivery threads. +/* .IP \fB-v\fR +/* Make the program more verbose, for debugging purposes. +/* .IP "\fB-w \fIinterval\fR" +/* Wait a fixed time between messages. +/* Suspending one thread does not affect other delivery threads. +/* SEE ALSO +/* qmqp-sink(1), QMQP message dump +/* LICENSE +/* .ad +/* .fi +/* The Secure Mailer license must be distributed with this software. +/* AUTHOR(S) +/* Wietse Venema +/* IBM T.J. Watson Research +/* P.O. Box 704 +/* Yorktown Heights, NY 10598, USA +/* +/* Wietse Venema +/* Google, Inc. +/* 111 8th Avenue +/* New York, NY 10011, USA +/*--*/ + +/* System library. */ + +#include <sys_defs.h> +#include <sys/socket.h> +#include <sys/wait.h> +#include <netinet/in.h> +#include <sys/un.h> +#include <stdlib.h> +#include <unistd.h> +#include <signal.h> +#include <errno.h> +#include <string.h> + +/* Utility library. */ + +#include <msg.h> +#include <msg_vstream.h> +#include <vstring.h> +#include <vstream.h> +#include <get_hostname.h> +#include <split_at.h> +#include <connect.h> +#include <mymalloc.h> +#include <events.h> +#include <iostuff.h> +#include <netstring.h> +#include <sane_connect.h> +#include <host_port.h> +#include <myaddrinfo.h> +#include <inet_proto.h> +#include <valid_hostname.h> +#include <valid_mailhost_addr.h> + +/* Global library. */ + +#include <mail_date.h> +#include <qmqp_proto.h> +#include <mail_version.h> + +/* Application-specific. */ + + /* + * Per-session data structure with state. + * + * This software can maintain multiple parallel connections to the same QMQP + * server. However, it makes no more than one connection request at a time + * to avoid overwhelming the server with SYN packets and having to back off. + * Back-off would screw up the benchmark. Pending connection requests are + * kept in a linear list. + */ +typedef struct SESSION { + int xfer_count; /* # of xfers in session */ + int rcpt_done; /* # of recipients done */ + int rcpt_count; /* # of recipients to go */ + VSTREAM *stream; /* open connection */ + int connect_count; /* # of connect()s to retry */ + struct SESSION *next; /* connect() queue linkage */ +} SESSION; + +static SESSION *last_session; /* connect() queue tail */ + +static VSTRING *buffer; +static int var_line_limit = 10240; +static int var_timeout = 300; +static const char *var_myhostname; +static int session_count; +static int message_count = 1; +static struct sockaddr_storage ss; + +#undef sun +static struct sockaddr_un sun; +static struct sockaddr *sa; +static int sa_length; +static int recipients = 1; +static char *defaddr; +static char *recipient; +static char *sender; +static int message_length = 1024; +static int count = 0; +static int counter = 0; +static int connect_count = 1; +static int random_delay = 0; +static int fixed_delay = 0; +static const char *mydate; +static int mypid; + +static void enqueue_connect(SESSION *); +static void start_connect(SESSION *); +static void connect_done(int, void *); + +static void send_data(SESSION *); +static void receive_reply(int, void *); + +static VSTRING *message_buffer; +static VSTRING *sender_buffer; +static VSTRING *recipient_buffer; + +/* Silly little macros. */ + +#define STR(x) vstring_str(x) +#define LEN(x) VSTRING_LEN(x) + +/* random_interval - generate a random value in 0 .. (small) interval */ + +static int random_interval(int interval) +{ + return (rand() % (interval + 1)); +} + +/* socket_error - look up and reset the last socket error */ + +static int socket_error(int sock) +{ + int error; + SOCKOPT_SIZE error_len; + + /* + * Some Solaris 2 versions have getsockopt() itself return the error, + * instead of returning it via the parameter list. + */ + error = 0; + error_len = sizeof(error); + if (getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *) &error, &error_len) < 0) + return (-1); + if (error) { + errno = error; + return (-1); + } + + /* + * No problems. + */ + return (0); +} + +/* exception_text - translate exceptions from the netstring module */ + +static char *exception_text(int except) +{ + ; + + switch (except) { + case NETSTRING_ERR_EOF: + return ("lost connection"); + case NETSTRING_ERR_TIME: + return ("timeout"); + case NETSTRING_ERR_FORMAT: + return ("netstring format error"); + case NETSTRING_ERR_SIZE: + return ("netstring size exceeds limit"); + default: + msg_panic("exception_text: unknown exception %d", except); + } + /* NOTREACHED */ +} + +/* startup - connect to server but do not wait */ + +static void startup(SESSION *session) +{ + if (message_count-- <= 0) { + myfree((void *) session); + session_count--; + return; + } + enqueue_connect(session); +} + +/* start_event - invoke startup from timer context */ + +static void start_event(int unused_event, void *context) +{ + SESSION *session = (SESSION *) context; + + startup(session); +} + +/* start_another - start another session */ + +static void start_another(SESSION *session) +{ + if (random_delay > 0) { + event_request_timer(start_event, (void *) session, + random_interval(random_delay)); + } else if (fixed_delay > 0) { + event_request_timer(start_event, (void *) session, fixed_delay); + } else { + startup(session); + } +} + +/* enqueue_connect - queue a connection request */ + +static void enqueue_connect(SESSION *session) +{ + session->next = 0; + if (last_session == 0) { + last_session = session; + start_connect(session); + } else { + last_session->next = session; + last_session = session; + } +} + +/* dequeue_connect - connection request completed */ + +static void dequeue_connect(SESSION *session) +{ + if (session == last_session) { + if (session->next != 0) + msg_panic("dequeue_connect: queue ends after last"); + last_session = 0; + } else { + if (session->next == 0) + msg_panic("dequeue_connect: queue ends before last"); + start_connect(session->next); + } +} + +/* fail_connect - handle failed startup */ + +static void fail_connect(SESSION *session) +{ + if (session->connect_count-- == 1) + msg_fatal("connect: %m"); + msg_warn("connect: %m"); + event_disable_readwrite(vstream_fileno(session->stream)); + vstream_fclose(session->stream); + session->stream = 0; +#ifdef MISSING_USLEEP + doze(10); +#else + usleep(10); +#endif + start_connect(session); +} + +/* start_connect - start TCP handshake */ + +static void start_connect(SESSION *session) +{ + int fd; + struct linger linger; + + /* + * Some systems don't set the socket error when connect() fails early + * (loopback) so we must deal with the error immediately, rather than + * retrieving it later with getsockopt(). We can't use MSG_PEEK to + * distinguish between server disconnect and connection refused. + */ + if ((fd = socket(sa->sa_family, SOCK_STREAM, 0)) < 0) + msg_fatal("socket: %m"); + (void) non_blocking(fd, NON_BLOCKING); + linger.l_onoff = 1; + linger.l_linger = 0; + if (setsockopt(fd, SOL_SOCKET, SO_LINGER, (void *) &linger, + sizeof(linger)) < 0) + msg_warn("setsockopt SO_LINGER %d: %m", linger.l_linger); + session->stream = vstream_fdopen(fd, O_RDWR); + event_enable_write(fd, connect_done, (void *) session); + netstring_setup(session->stream, var_timeout); + if (sane_connect(fd, sa, sa_length) < 0 && errno != EINPROGRESS) + fail_connect(session); +} + +/* connect_done - send message sender info */ + +static void connect_done(int unused_event, void *context) +{ + SESSION *session = (SESSION *) context; + int fd = vstream_fileno(session->stream); + + /* + * Try again after some delay when the connection failed, in case they + * run a Mickey Mouse protocol stack. + */ + if (socket_error(fd) < 0) { + fail_connect(session); + } else { + dequeue_connect(session); + non_blocking(fd, BLOCKING); + event_disable_readwrite(fd); + /* Avoid poor performance when TCP MSS > VSTREAM_BUFSIZE. */ + if (sa->sa_family == AF_INET +#ifdef AF_INET6 + || sa->sa_family == AF_INET6 +#endif + ) + vstream_tweak_tcp(session->stream); + send_data(session); + } +} + +/* send_data - send message+sender+recipients */ + +static void send_data(SESSION *session) +{ + int fd = vstream_fileno(session->stream); + int except; + + /* + * Prepare for disaster. + */ + if ((except = vstream_setjmp(session->stream)) != 0) + msg_fatal("%s while sending message", exception_text(except)); + + /* + * Send the message content, by wrapping three netstrings into an + * over-all netstring. + * + * XXX This should be done more carefully to avoid blocking when sending + * large messages over slow networks. + */ + netstring_put_multi(session->stream, + STR(message_buffer), LEN(message_buffer), + STR(sender_buffer), LEN(sender_buffer), + STR(recipient_buffer), LEN(recipient_buffer), + (char *) 0); + netstring_fflush(session->stream); + + /* + * Wake me up when the server replies or when something bad happens. + */ + event_enable_read(fd, receive_reply, (void *) session); +} + +/* receive_reply - read server reply */ + +static void receive_reply(int unused_event, void *context) +{ + SESSION *session = (SESSION *) context; + int except; + + /* + * Prepare for disaster. + */ + if ((except = vstream_setjmp(session->stream)) != 0) + msg_fatal("%s while receiving server reply", exception_text(except)); + + /* + * Receive and process the server reply. + */ + netstring_get(session->stream, buffer, var_line_limit); + if (msg_verbose) + vstream_printf("<< %.*s\n", (int) LEN(buffer), STR(buffer)); + if (STR(buffer)[0] != QMQP_STAT_OK) + msg_fatal("%s error: %.*s", + STR(buffer)[0] == QMQP_STAT_RETRY ? "recoverable" : + STR(buffer)[0] == QMQP_STAT_HARD ? "unrecoverable" : + "unknown", (int) LEN(buffer) - 1, STR(buffer) + 1); + + /* + * Update the optional running counter. + */ + if (count) { + counter++; + vstream_printf("%d\r", counter); + vstream_fflush(VSTREAM_OUT); + } + + /* + * Finish this session. QMQP sends only one message per session. + */ + event_disable_readwrite(vstream_fileno(session->stream)); + vstream_fclose(session->stream); + session->stream = 0; + start_another(session); +} + +/* usage - explain */ + +static void usage(char *myname) +{ + msg_fatal("usage: %s -cv -s sess -l msglen -m msgs -C count -M myhostname -f from -t to -R delay -w delay host[:port]", myname); +} + +MAIL_VERSION_STAMP_DECLARE; + +/* main - parse JCL and start the machine */ + +int main(int argc, char **argv) +{ + SESSION *session; + char *host; + char *port; + char *path; + int path_len; + int sessions = 1; + int ch; + ssize_t len; + int n; + int i; + char *buf; + const char *parse_err; + struct addrinfo *res; + int aierr; + const char *protocols = INET_PROTO_NAME_ALL; + + /* + * Fingerprint executables and core dumps. + */ + MAIL_VERSION_STAMP_ALLOCATE; + + signal(SIGPIPE, SIG_IGN); + msg_vstream_init(argv[0], VSTREAM_ERR); + + /* + * Parse JCL. + */ + while ((ch = GETOPT(argc, argv, "46cC:f:l:m:M:r:R:s:t:vw:")) > 0) { + switch (ch) { + case '4': + protocols = INET_PROTO_NAME_IPV4; + break; + case '6': + protocols = INET_PROTO_NAME_IPV6; + break; + case 'c': + count++; + break; + case 'C': + if ((connect_count = atoi(optarg)) <= 0) + usage(argv[0]); + break; + case 'f': + sender = optarg; + break; + case 'l': + if ((message_length = atoi(optarg)) <= 0) + usage(argv[0]); + break; + case 'm': + if ((message_count = atoi(optarg)) <= 0) + usage(argv[0]); + break; + case 'M': + if (*optarg == '[') { + if (!valid_mailhost_literal(optarg, DO_GRIPE)) + msg_fatal("bad address literal: %s", optarg); + } else { + if (!valid_hostname(optarg, DO_GRIPE)) + msg_fatal("bad hostname: %s", optarg); + } + var_myhostname = optarg; + break; + case 'r': + if ((recipients = atoi(optarg)) <= 0) + usage(argv[0]); + break; + case 'R': + if (fixed_delay > 0 || (random_delay = atoi(optarg)) <= 0) + usage(argv[0]); + break; + case 's': + if ((sessions = atoi(optarg)) <= 0) + usage(argv[0]); + break; + case 't': + recipient = optarg; + break; + case 'v': + msg_verbose++; + break; + case 'w': + if (random_delay > 0 || (fixed_delay = atoi(optarg)) <= 0) + usage(argv[0]); + break; + default: + usage(argv[0]); + } + } + if (argc - optind != 1) + usage(argv[0]); + + if (random_delay > 0) + srand(getpid()); + + /* + * Translate endpoint address to internal form. + */ + (void) inet_proto_init("protocols", protocols); + if (strncmp(argv[optind], "unix:", 5) == 0) { + path = argv[optind] + 5; + path_len = strlen(path); + if (path_len >= (int) sizeof(sun.sun_path)) + msg_fatal("unix-domain name too long: %s", path); + memset((void *) &sun, 0, sizeof(sun)); + sun.sun_family = AF_UNIX; +#ifdef HAS_SUN_LEN + sun.sun_len = path_len + 1; +#endif + memcpy(sun.sun_path, path, path_len); + sa = (struct sockaddr *) &sun; + sa_length = sizeof(sun); + } else { + if (strncmp(argv[optind], "inet:", 5) == 0) + argv[optind] += 5; + buf = mystrdup(argv[optind]); + if ((parse_err = host_port(buf, &host, (char *) 0, &port, "628")) != 0) + msg_fatal("%s: %s", argv[optind], parse_err); + if ((aierr = hostname_to_sockaddr(host, port, SOCK_STREAM, &res)) != 0) + msg_fatal("%s: %s", argv[optind], MAI_STRERROR(aierr)); + myfree(buf); + sa = (struct sockaddr *) &ss; + if (res->ai_addrlen > sizeof(ss)) + msg_fatal("address length %d > buffer length %d", + (int) res->ai_addrlen, (int) sizeof(ss)); + memcpy((void *) sa, res->ai_addr, res->ai_addrlen); + sa_length = res->ai_addrlen; +#ifdef HAS_SA_LEN + sa->sa_len = sa_length; +#endif + freeaddrinfo(res); + } + + /* + * Allocate space for temporary buffer. + */ + buffer = vstring_alloc(100); + + /* + * Make sure we have sender and recipient addresses. + */ + if (var_myhostname == 0) + var_myhostname = get_hostname(); + if (sender == 0 || recipient == 0) { + vstring_sprintf(buffer, "foo@%s", var_myhostname); + defaddr = mystrdup(vstring_str(buffer)); + if (sender == 0) + sender = defaddr; + if (recipient == 0) + recipient = defaddr; + } + + /* + * Prepare some results that may be used multiple times: the message + * content netstring, the sender netstring, and the recipient netstrings. + */ + mydate = mail_date(time((time_t *) 0)); + mypid = getpid(); + + message_buffer = vstring_alloc(message_length + 200); + vstring_sprintf(buffer, + "From: <%s>\nTo: <%s>\nDate: %s\nMessage-Id: <%d@%s>\n\n", + sender, recipient, mydate, mypid, var_myhostname); + for (n = 1; LEN(buffer) < message_length; n++) { + for (i = 0; i < n && i < 79; i++) + VSTRING_ADDCH(buffer, 'X'); + VSTRING_ADDCH(buffer, '\n'); + } + STR(buffer)[message_length - 1] = '\n'; + netstring_memcpy(message_buffer, STR(buffer), message_length); + + len = strlen(sender); + sender_buffer = vstring_alloc(len); + netstring_memcpy(sender_buffer, sender, len); + + if (recipients == 1) { + len = strlen(recipient); + recipient_buffer = vstring_alloc(len); + netstring_memcpy(recipient_buffer, recipient, len); + } else { + recipient_buffer = vstring_alloc(100); + for (n = 0; n < recipients; n++) { + vstring_sprintf(buffer, "%d%s", n, recipient); + netstring_memcat(recipient_buffer, STR(buffer), LEN(buffer)); + } + } + + /* + * Start sessions. + */ + while (sessions-- > 0) { + session = (SESSION *) mymalloc(sizeof(*session)); + session->stream = 0; + session->xfer_count = 0; + session->connect_count = connect_count; + session->next = 0; + session_count++; + startup(session); + } + for (;;) { + event_loop(-1); + if (session_count <= 0 && message_count <= 0) { + if (count) { + VSTREAM_PUTC('\n', VSTREAM_OUT); + vstream_fflush(VSTREAM_OUT); + } + exit(0); + } + } +} |