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/**
@file send_to_self.c
@brief A basic message sending test
@author defanor <defanor@uberspace.net>
@date 2022
@copyright MIT license.
Connects to a server, sends a message to itself, receives it, checks
that it's the expected message.
*/
#define TIMEOUT 30
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <syslog.h>
#include <gsasl.h>
#include <rexmpp.h>
#include <rexmpp_sasl.h>
enum test_stage {
TEST_CONNECTING,
TEST_MESSAGE_SENT,
TEST_MESSAGE_RECEIVED,
TEST_DONE,
TEST_TIMEOUT
};
enum test_stage stage = TEST_CONNECTING;
char *jid, *pass, msg_text[256];
void my_logger (rexmpp_t *s, int priority, const char *fmt, va_list args) {
(void)s;
char *priority_str = "unknown";
switch (priority) {
case LOG_EMERG: priority_str = "emerg"; break;
case LOG_ALERT: priority_str = "alert"; break;
case LOG_CRIT: priority_str = "crit"; break;
case LOG_ERR: priority_str = "err"; break;
case LOG_WARNING: priority_str = "warning"; break;
case LOG_NOTICE: priority_str = "notice"; break;
case LOG_INFO: priority_str = "info"; break;
case LOG_DEBUG: priority_str = "debug"; break;
}
fprintf(stdout, "[%s] ", priority_str);
vfprintf(stdout, fmt, args);
fprintf(stdout, "\n");
}
int my_sasl_property_cb (rexmpp_t *s, rexmpp_sasl_property prop) {
if (prop == REXMPP_SASL_PROP_PASSWORD) {
rexmpp_sasl_property_set (s, REXMPP_SASL_PROP_PASSWORD, pass);
return 0;
}
if (prop == REXMPP_SASL_PROP_AUTHID) {
rexmpp_sasl_property_set (s, REXMPP_SASL_PROP_AUTHID, s->initial_jid.local);
return 0;
}
printf("unhandled SASL property: %d\n", prop);
return -1;
}
int my_xml_in_cb (rexmpp_t *s, xmlNodePtr node) {
(void)s;
char *xml_buf = rexmpp_xml_serialize(node);
printf("recv: %s\n", xml_buf);
free(xml_buf);
if (stage == TEST_MESSAGE_SENT && rexmpp_xml_match(node, "jabber:client", "message")) {
xmlNodePtr body = rexmpp_xml_find_child(node, "jabber:client", "body");
if (body != NULL) {
char *txt = xmlNodeGetContent(body);
if (txt != NULL) {
if (strcmp(txt, msg_text) == 0) {
stage = TEST_MESSAGE_RECEIVED;
}
free(txt);
}
}
}
return 0;
}
int my_xml_out_cb (rexmpp_t *s, xmlNodePtr node) {
(void)s;
char *xml_buf = rexmpp_xml_serialize(node);
printf("send: %s\n", xml_buf);
free(xml_buf);
return 0;
}
int main (int argc, char **argv) {
(void)argc;
(void)argv;
jid = getenv("JID");
pass = getenv("PASS");
char *tls_policy = getenv("TLS_POLICY");
time_t t = time(NULL);
struct tm utc_time;
gmtime_r(&t, &utc_time);
strftime(msg_text, 256, "The current time is %FT%TZ", &utc_time);
rexmpp_t s;
rexmpp_err_t err;
err = rexmpp_init(&s, jid, my_logger);
if (err != REXMPP_SUCCESS) {
puts("Failed to initialise rexmpp.");
return -1;
}
if (tls_policy != NULL) {
if (strcasecmp(tls_policy, "require") == 0) {
s.tls_policy = REXMPP_TLS_REQUIRE;
} else if (strcasecmp(tls_policy, "prefer") == 0) {
s.tls_policy = REXMPP_TLS_PREFER;
} else if (strcasecmp(tls_policy, "avoid") == 0) {
s.tls_policy = REXMPP_TLS_AVOID;
}
}
s.sasl_property_cb = my_sasl_property_cb;
s.xml_in_cb = my_xml_in_cb;
s.xml_out_cb = my_xml_out_cb;
fd_set read_fds, write_fds;
int nfds;
struct timeval tv;
struct timeval *mtv;
int n = 0;
do {
err = rexmpp_run(&s, &read_fds, &write_fds);
if (err == REXMPP_SUCCESS) {
puts("done");
break;
}
if (err != REXMPP_E_AGAIN) {
printf("error: %s\n", rexmpp_strerror(err));
break;
}
if (stage == TEST_CONNECTING && s.stream_state == REXMPP_STREAM_READY) {
xmlNodePtr msg = rexmpp_xml_add_id(&s, xmlNewNode(NULL, "message"));
xmlNewNs(msg, "jabber:client", NULL);
xmlNewProp(msg, "to", jid);
xmlNewProp(msg, "type", "chat");
xmlNewTextChild(msg, NULL, "body", msg_text);
rexmpp_send(&s, msg);
stage = TEST_MESSAGE_SENT;
} else if (stage == TEST_MESSAGE_RECEIVED) {
rexmpp_stop(&s);
stage = TEST_DONE;
}
time_t now = time(NULL);
if (stage != TEST_DONE) {
if (stage != TEST_TIMEOUT && difftime(now, t) > TIMEOUT) {
puts("Timeout");
rexmpp_stop(&s);
stage = TEST_TIMEOUT;
} else if (stage == TEST_TIMEOUT && difftime(now, t) > TIMEOUT + 10) {
puts("Failed to close the stream properly, quitting");
rexmpp_done(&s);
return -1;
}
}
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
nfds = rexmpp_fds(&s, &read_fds, &write_fds);
tv.tv_sec = TIMEOUT;
tv.tv_usec = 0;
mtv = rexmpp_timeout(&s, (struct timeval*)&tv, (struct timeval*)&tv);
n = select(nfds, &read_fds, &write_fds, NULL, mtv);
if (n == -1) {
printf("select error: %s\n", strerror(errno));
break;
}
printf("stage = %u\n", stage);
} while (1);
rexmpp_done(&s);
return (stage != TEST_DONE);
}
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