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sensorflare.c
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sensorflare.c
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#include "sensorflare.h"
void die(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fprintf(stderr, "\n");
exit(1);
}
void die_on_error(int x, char const *context) {
if (x < 0) {
fprintf(stderr, "%s: %s\n", context, amqp_error_string2(x));
exit(1);
}
}
void die_on_amqp_error(amqp_rpc_reply_t x, char const *context) {
switch (x.reply_type) {
case AMQP_RESPONSE_NORMAL:
return;
case AMQP_RESPONSE_NONE:
fprintf(stderr, "%s: missing RPC reply type!\n", context);
break;
case AMQP_RESPONSE_LIBRARY_EXCEPTION:
fprintf(stderr, "%s: %s\n", context, amqp_error_string2(x.library_error));
break;
case AMQP_RESPONSE_SERVER_EXCEPTION:
switch (x.reply.id) {
case AMQP_CONNECTION_CLOSE_METHOD:
{
amqp_connection_close_t *m = (amqp_connection_close_t *) x.reply.decoded;
fprintf(stderr, "%s: server connection error %d, message: %.*s\n",
context,
m->reply_code,
(int) m->reply_text.len, (char *) m->reply_text.bytes);
break;
}
case AMQP_CHANNEL_CLOSE_METHOD:
{
amqp_channel_close_t *m = (amqp_channel_close_t *) x.reply.decoded;
fprintf(stderr, "%s: server channel error %d, message: %.*s\n",
context,
m->reply_code,
(int) m->reply_text.len, (char *) m->reply_text.bytes);
break;
}
default:
fprintf(stderr, "%s: unknown server error, method id 0x%08X\n", context, x.reply.id);
break;
}
break;
}
exit(1);
}
static void dump_row(long count, int numinrow, int *chs) {
int i;
printf("%08lX:", count - numinrow);
if (numinrow > 0) {
for (i = 0; i < numinrow; i++) {
if (i == 8) {
printf(" :");
}
printf(" %02X", chs[i]);
}
for (i = numinrow; i < 16; i++) {
if (i == 8) {
printf(" :");
}
printf(" ");
}
printf(" ");
for (i = 0; i < numinrow; i++) {
if (isprint(chs[i])) {
printf("%c", chs[i]);
} else {
printf(".");
}
}
}
printf("\n");
}
static int rows_eq(int *a, int *b) {
int i;
for (i = 0; i < 16; i++)
if (a[i] != b[i]) {
return 0;
}
return 1;
}
void amqp_dump(void const *buffer, size_t len) {
unsigned char *buf = (unsigned char *) buffer;
long count = 0;
int numinrow = 0;
int chs[16];
int oldchs[16] = {0};
int showed_dots = 0;
size_t i;
for (i = 0; i < len; i++) {
int ch = buf[i];
if (numinrow == 16) {
int i;
if (rows_eq(oldchs, chs)) {
if (!showed_dots) {
showed_dots = 1;
printf(" .. .. .. .. .. .. .. .. : .. .. .. .. .. .. .. ..\n");
}
} else {
showed_dots = 0;
dump_row(count, numinrow, chs);
}
for (i = 0; i < 16; i++) {
oldchs[i] = chs[i];
}
numinrow = 0;
}
count++;
chs[numinrow++] = ch;
}
dump_row(count, numinrow, chs);
if (numinrow != 0) {
printf("%08lX:\n", count);
}
}
void sendMessage(char * messagebody) {
amqp_connection_state_t conn = amqp_new_connection();
amqp_socket_t * rabbit_socket = amqp_tcp_socket_new(conn);
if (!rabbit_socket) {
die("creating TCP/SSL/TLS socket");
}
/*
status = amqp_ssl_socket_set_cacert(rabbit_socket, "ca.pem");
if (status) {
die("setting CA certificate");
}
*/
int status = amqp_socket_open(rabbit_socket, "mochad.sensorflare.com", 5672);
if (status) {
die("opening TCP/SSL/TLS connection");
}
die_on_amqp_error(amqp_login(conn, "/", 0, 131072, 0, AMQP_SASL_METHOD_PLAIN, username, password), "Logging in");
amqp_channel_open(conn, 1);
die_on_amqp_error(amqp_get_rpc_reply(conn), "Opening channel");
amqp_basic_properties_t props;
props._flags = AMQP_BASIC_CONTENT_TYPE_FLAG | AMQP_BASIC_DELIVERY_MODE_FLAG;
props.content_type = amqp_cstring_bytes("text/plain");
props.delivery_mode = 1; /* persistent delivery mode */
die_on_error(amqp_basic_publish(conn,
1,
amqp_cstring_bytes(exchange),
amqp_cstring_bytes(exchange),
0,
0,
&props,
amqp_cstring_bytes(messagebody)),
"Publishing");
syslog(LOG_NOTICE, "Sent message : %s , exchange: %s", messagebody, exchange);
syslog(LOG_NOTICE, "Receiver Status: %d", receiver_thread_status);
die_on_amqp_error(amqp_channel_close(conn, 1, AMQP_REPLY_SUCCESS), "Closing channel");
die_on_amqp_error(amqp_connection_close(conn, AMQP_REPLY_SUCCESS), "Closing connection");
die_on_error(amqp_destroy_connection(conn), "Ending connection");
}
void * status_reporting(void *threadid) {
char st_command[10];
sprintf(st_command, "st");
while (1) {
processcommandline(NULL, st_command);
sleep(STATUS_INTERVAL);
}
return threadid;
}
void * receiver(void *receiver_thread_status_p) {
(*(int *) receiver_thread_status_p) = 1;
while (1) {
amqp_rpc_reply_t res;
amqp_envelope_t envelope;
amqp_maybe_release_buffers(conn);
res = amqp_consume_message(conn, &envelope, NULL, 0);
if (AMQP_RESPONSE_NORMAL != res.reply_type) {
syslog(LOG_NOTICE, "not an AMQP_RESPONSE_NORMAL %d", res.reply_type);
break;
}
syslog(LOG_NOTICE, "Delivery %u, exchange '%.*s' routingkey '%.*s'\n",
(unsigned) envelope.delivery_tag,
(int) envelope.exchange.len, (char *) envelope.exchange.bytes,
(int) envelope.routing_key.len, (char *) envelope.routing_key.bytes);
char buf[100];
syslog(LOG_INFO, "%s", (char *) envelope.message.body.bytes);
memcpy(buf, envelope.message.body.bytes, envelope.message.body.len);
sprintf(buf, "%s", (char *) envelope.message.body.bytes);
buf[envelope.message.body.len] = '\0';
printf("%s", buf);
processcommandline(NULL, buf);
if (envelope.message.properties._flags & AMQP_BASIC_CONTENT_TYPE_FLAG) {
/*
syslog("Content-type: %.*s\n",
(int) envelope.message.properties.content_type.len,
(char *) envelope.message.properties.content_type.bytes);
*/
}
syslog(LOG_NOTICE, "Receive command from rabbitmq: %s", buf);
/*
*/
/*
syslog("\n");
*/
//amqp_dump(envelope.message.body.bytes, envelope.message.body.len);
/*
if (strcmp("end", buf) == 0) {
amqp_destroy_envelope(&envelope);
break;
}
*/
amqp_destroy_envelope(&envelope);
}
(*(int *) receiver_thread_status_p) = 0;
die_on_amqp_error(amqp_channel_close(conn, 1, AMQP_REPLY_SUCCESS), "Closing channel");
die_on_amqp_error(amqp_connection_close(conn, AMQP_REPLY_SUCCESS), "Closing connection");
die_on_error(amqp_destroy_connection(conn), "Ending connection");
syslog(LOG_NOTICE, "receiver exited!");
init_sensorflare(0);
return receiver_thread_status_p;
}
void init_sensorflare(long int Cm19a) {
FILE* fptr = fopen("/etc/mochad/sensorflare.conf", "r");
sensorflare_connected = fptr != NULL;
if (!sensorflare_connected) {
return;
}
cfg_opt_t opts[] = {
CFG_STR("password", "password", CFGF_NONE),
CFG_STR("username", "username", CFGF_NONE),
CFG_END()
};
cfg_t *cfg;
cfg = cfg_init(opts, CFGF_NONE);
if (cfg_parse(cfg, "/etc/mochad/sensorflare.conf") == CFG_PARSE_ERROR) {
syslog(LOG_ERR, "failed to parse /etc/mochad/sensorflare.conf");
return;
}
username = cfg_getstr(cfg, "username");
password = cfg_getstr(cfg, "password");
sprintf(exchange, "mochad-%s-send", username);
sprintf(commands_queue, "mochad-%s-commands", username);
syslog(LOG_INFO, "send exchange : %s", exchange);
syslog(LOG_INFO, "commands queue : %s", commands_queue);
syslog(LOG_INFO, "Connecting to rabbitmq endpoint mochad.sensorflare.com:5671...");
int status;
conn = amqp_new_connection();
rabbit_socket = amqp_tcp_socket_new(conn);
if (!rabbit_socket) {
die("creating TCP/SSL/TLS socket");
}
/*
status = amqp_ssl_socket_set_cacert(rabbit_socket, "ca.pem");
if (status) {
die("setting CA certificate");
}
*/
status = amqp_socket_open(rabbit_socket, "mochad.sensorflare.com", 5672);
if (status) {
die("opening TCP/SSL/TLS connection");
}
die_on_amqp_error(amqp_login(conn, "/", 0, 131072, 0, AMQP_SASL_METHOD_PLAIN, username, password), "Logging in");
amqp_channel_open(conn, 1);
die_on_amqp_error(amqp_get_rpc_reply(conn), "Opening channel");
amqp_basic_consume(conn, 1, amqp_cstring_bytes(commands_queue), amqp_empty_bytes, 0, 0, 0, amqp_empty_table);
die_on_amqp_error(amqp_get_rpc_reply(conn), "Consuming");
int rc = pthread_create(&rabbit_receiver_thread, NULL, receiver, (void *) &receiver_thread_status);
if (rc) {
syslog(LOG_ERR, "return code from pthread_create() is %d\n", rc);
exit(-1);
}
}