void
client_read(struct bufferevent *bufev, void *arg)
{
struct session *s = arg;
size_t buf_avail, read;
int n;
do {
buf_avail = sizeof s->cbuf - s->cbuf_valid;
read = bufferevent_read(bufev, s->cbuf + s->cbuf_valid,
buf_avail);
s->cbuf_valid += read;
while ((n = get_line(s->cbuf, &s->cbuf_valid)) > 0) {
logmsg(LOG_DEBUG, "#%d client: %s", s->id, linebuf);
if (!client_parse(s)) {
end_session(s);
return;
}
bufferevent_write(s->server_bufev, linebuf, linelen);
}
if (n == -1) {
logmsg(LOG_ERR, "#%d client command too long or not"
" clean", s->id);
end_session(s);
return;
}
} while (read == buf_avail);
}
/*
* Read a client definition from the given filename.
*/
RADCLIENT *client_read(char const *filename, int in_server, int flag)
{
char const *p;
RADCLIENT *c;
CONF_SECTION *cs;
char buffer[256];
if (!filename) return NULL;
cs = cf_file_read(filename);
if (!cs) return NULL;
cs = cf_section_sub_find(cs, "client");
if (!cs) {
ERROR("No \"client\" section found in client file");
return NULL;
}
c = client_parse(cs, in_server);
if (!c) return NULL;
p = strrchr(filename, FR_DIR_SEP);
if (p) {
p++;
} else {
p = filename;
}
if (!flag) return c;
/*
* Additional validations
*/
ip_ntoh(&c->ipaddr, buffer, sizeof(buffer));
if (strcmp(p, buffer) != 0) {
DEBUG("Invalid client definition in %s: IP address %s does not match name %s", filename, buffer, p);
client_free(c);
return NULL;
}
return c;
}
static uint8_t client_parse(Client *client, int size) {
char *end, *str;
uint16_t status_code;
switch (client->parser_state) {
case PARSER_START:
//printf("parse (START):\n%s\n", &client->buffer[client->parser_offset]);
/* look for HTTP/1.1 200 OK */
if (client->buffer_offset < sizeof("HTTP/1.1 200\r\n"))
return 1;
if (strncmp(client->buffer, "HTTP/1.1 ", sizeof("HTTP/1.1 ")-1) != 0)
return 0;
// now the status code
status_code = 0;
str = client->buffer + sizeof("HTTP/1.1 ")-1;
for (end = str + 3; str != end; str++) {
if (*str < '0' || *str > '9')
return 0;
status_code *= 10;
status_code += *str - '0';
}
// look for next \r\n
end = memchr(end, '\r', client->buffer_offset);
if (!end || *(end+1) != '\n')
return (!end || *(end+1) == '\0') && client->buffer_offset < 1024 ? 1 : 0;
if (status_code >= 200 && status_code < 300) {
client->worker->stats.req_2xx++;
client->status_success = 1;
} else if (status_code < 400) {
client->worker->stats.req_3xx++;
client->status_success = 1;
} else if (status_code < 500) {
client->worker->stats.req_4xx++;
} else if (status_code < 600) {
client->worker->stats.req_5xx++;
} else {
// invalid status code
return 0;
}
client->parser_offset = end + 2 - client->buffer;
client->parser_state = PARSER_HEADER;
case PARSER_HEADER:
//printf("parse (HEADER)\n");
/* look for Content-Length and Connection header */
while (NULL != (end = memchr(&client->buffer[client->parser_offset], '\r', client->buffer_offset - client->parser_offset))) {
if (*(end+1) != '\n')
return *(end+1) == '\0' && client->buffer_offset - client->parser_offset < 1024 ? 1 : 0;
if (end == &client->buffer[client->parser_offset]) {
/* body reached */
client->parser_state = PARSER_BODY;
client->header_size = end + 2 - client->buffer;
//printf("body reached\n");
return client_parse(client, size - client->header_size);
}
*end = '\0';
str = &client->buffer[client->parser_offset];
//printf("checking header: '%s'\n", str);
if (strncasecmp(str, "Content-Length: ", sizeof("Content-Length: ")-1) == 0) {
/* content length header */
client->content_length = str_to_uint64(str + sizeof("Content-Length: ") - 1);
} else if (strncasecmp(str, "Connection: ", sizeof("Connection: ")-1) == 0) {
/* connection header */
str += sizeof("Connection: ") - 1;
if (strncasecmp(str, "close", sizeof("close")-1) == 0)
client->keepalive = 0;
else if (strncasecmp(str, "keep-alive", sizeof("keep-alive")-1) == 0)
client->keepalive = client->worker->config->keep_alive;
else
return 0;
} else if (strncasecmp(str, "Transfer-Encoding: ", sizeof("Transfer-Encoding: ")-1) == 0) {
/* transfer encoding header */
str += sizeof("Transfer-Encoding: ") - 1;
if (strncasecmp(str, "chunked", sizeof("chunked")-1) == 0)
client->chunked = 1;
else
return 0;
}
if (*(end+2) == '\r' && *(end+3) == '\n') {
/* body reached */
client->parser_state = PARSER_BODY;
client->header_size = end + 4 - client->buffer;
client->parser_offset = client->header_size;
//printf("body reached\n");
return client_parse(client, size - client->header_size);
}
client->parser_offset = end - client->buffer + 2;
}
return 1;
case PARSER_BODY:
//printf("parse (BODY)\n");
/* do nothing, just consume the data */
/*printf("content-l: %"PRIu64", header: %d, recevied: %"PRIu64"\n",
client->content_length, client->header_size, client->bytes_received);*/
if (client->chunked) {
int consume_max;
str = &client->buffer[client->parser_offset];
/*printf("parsing chunk: '%s'\n(%"PRIi64" received, %"PRIi64" size, %d parser offset)\n",
str, client->chunk_received, client->chunk_size, client->parser_offset
);*/
if (client->chunk_size == -1) {
/* read chunk size */
client->chunk_size = 0;
client->chunk_received = 0;
end = str + size;
for (; str < end; str++) {
if (*str == ';' || *str == '\r')
break;
client->chunk_size *= 16;
if (*str >= '0' && *str <= '9')
client->chunk_size += *str - '0';
else if (*str >= 'A' && *str <= 'Z')
client->chunk_size += 10 + *str - 'A';
else if (*str >= 'a' && *str <= 'z')
client->chunk_size += 10 + *str - 'a';
else
return 0; /*(src < end checked above)*/
}
if (str[0] != '\r') {
str = memchr(str, '\r', end-str);
if (!str) {
client->chunk_size = -1;
return size < 1024 ? 1 : 0;
}
}
if (str[1] != '\n') {
client->chunk_size = -1;
return str+1 == end ? 1 : 0;
}
str += 2;
//printf("---------- chunk size: %"PRIi64", %d read, %d offset, data: '%s'\n", client->chunk_size, size, client->parser_offset, str);
size -= str - &client->buffer[client->parser_offset];
client->parser_offset = str - client->buffer;
if (client->chunk_size == 0) {
/* chunk of size 0 marks end of content body */
client->state = CLIENT_END;
client->success = client->status_success ? 1 : 0;
return 1;
}
}
/* consume chunk till chunk_size is reached */
consume_max = client->chunk_size - client->chunk_received;
if (size < consume_max)
consume_max = size;
client->chunk_received += consume_max;
client->parser_offset += consume_max;
//printf("---------- chunk consuming: %d, received: %"PRIi64" of %"PRIi64", offset: %d\n", consume_max, client->chunk_received, client->chunk_size, client->parser_offset);
if (client->chunk_received == client->chunk_size) {
if (size - consume_max < 2)
return 1;
if (client->buffer[client->parser_offset] != '\r' || client->buffer[client->parser_offset+1] != '\n')
return 0;
/* got whole chunk, next! */
//printf("---------- got whole chunk!!\n");
client->chunk_size = -1;
client->chunk_received = 0;
client->parser_offset += 2;
consume_max += 2;
/* there is stuff left to parse */
if (size - consume_max > 0)
return client_parse(client, size - consume_max);
}
client->parser_offset = 0;
client->buffer_offset = 0;
return 1;
} else {
/* not chunked, just consume all data till content-length is reached */
client->buffer_offset = 0;
if (client->content_length == -1)
return 0;
if (client->bytes_received == (uint64_t) (client->header_size + client->content_length)) {
/* full response received */
client->state = CLIENT_END;
client->success = client->status_success ? 1 : 0;
}
}
return 1;
}
return 1;
}
void client_state_machine(Client *client) {
int r;
Config *config = client->worker->config;
start:
//printf("state: %d\n", client->state);
switch (client->state) {
case CLIENT_START:
client->worker->stats.req_started++;
do {
r = socket(config->saddr->ai_family, config->saddr->ai_socktype, config->saddr->ai_protocol);
} while (-1 == r && errno == EINTR);
if (-1 == r) {
client->state = CLIENT_ERROR;
strerror_r(errno, client->buffer, sizeof(client->buffer));
W_ERROR("socket() failed: %s (%d)", client->buffer, errno);
goto start;
}
/* set non-blocking */
fcntl(r, F_SETFL, O_NONBLOCK | O_RDWR);
ev_init(&client->sock_watcher, client_io_cb);
ev_io_set(&client->sock_watcher, r, EV_WRITE);
ev_io_start(client->worker->loop, &client->sock_watcher);
if (!client_connect(client)) {
client->state = CLIENT_ERROR;
goto start;
} else {
client_set_events(client, EV_WRITE);
return;
}
case CLIENT_CONNECTING:
if (!client_connect(client)) {
client->state = CLIENT_ERROR;
goto start;
}
case CLIENT_WRITING:
while (1) {
r = write(client->sock_watcher.fd, &config->request[client->request_offset], config->request_size - client->request_offset);
//printf("write(%d - %d = %d): %d\n", config->request_size, client->request_offset, config->request_size - client->request_offset, r);
if (r == -1) {
/* error */
if (errno == EINTR)
continue;
strerror_r(errno, client->buffer, sizeof(client->buffer));
W_ERROR("write() failed: %s (%d)", client->buffer, errno);
client->state = CLIENT_ERROR;
goto start;
} else if (r != 0) {
/* success */
client->request_offset += r;
if (client->request_offset == config->request_size) {
/* whole request was sent, start reading */
client->state = CLIENT_READING;
client_set_events(client, EV_READ);
}
return;
} else {
/* disconnect */
client->state = CLIENT_END;
goto start;
}
}
case CLIENT_READING:
while (1) {
r = read(client->sock_watcher.fd, &client->buffer[client->buffer_offset], sizeof(client->buffer) - client->buffer_offset - 1);
//printf("read(): %d, offset was: %d\n", r, client->buffer_offset);
if (r == -1) {
/* error */
if (errno == EINTR)
continue;
strerror_r(errno, client->buffer, sizeof(client->buffer));
W_ERROR("read() failed: %s (%d)", client->buffer, errno);
client->state = CLIENT_ERROR;
} else if (r != 0) {
/* success */
client->bytes_received += r;
client->buffer_offset += r;
client->worker->stats.bytes_total += r;
if (client->buffer_offset >= sizeof(client->buffer)) {
/* too big response header */
client->state = CLIENT_ERROR;
break;
}
client->buffer[client->buffer_offset] = '\0';
//printf("buffer:\n==========\n%s\n==========\n", client->buffer);
if (!client_parse(client, r)) {
client->state = CLIENT_ERROR;
//printf("parser failed\n");
break;
} else {
if (client->state == CLIENT_END)
goto start;
else
return;
}
} else {
/* disconnect */
if (client->parser_state == PARSER_BODY && !client->keepalive && client->status_success
&& !client->chunked && client->content_length == -1) {
client->success = 1;
client->state = CLIENT_END;
} else {
client->state = CLIENT_ERROR;
}
goto start;
}
}
case CLIENT_ERROR:
//printf("client error\n");
client->worker->stats.req_error++;
client->keepalive = 0;
client->success = 0;
client->state = CLIENT_END;
case CLIENT_END:
/* update worker stats */
client->worker->stats.req_done++;
if (client->success) {
client->worker->stats.req_success++;
client->worker->stats.bytes_body += client->bytes_received - client->header_size;
} else {
client->worker->stats.req_failed++;
}
/* print progress every 10% done */
if (client->worker->id == 1 && client->worker->stats.req_done % client->worker->progress_interval == 0) {
printf("progress: %3d%% done\n",
(int) (client->worker->stats.req_done * 100 / client->worker->stats.req_todo)
);
}
if (client->worker->stats.req_started == client->worker->stats.req_todo) {
/* this worker has started all requests */
client->keepalive = 0;
client_reset(client);
if (client->worker->stats.req_done == client->worker->stats.req_todo) {
/* this worker has finished all requests */
ev_unref(client->worker->loop);
}
} else {
client_reset(client);
goto start;
}
}
}
RADCLIENT_LIST *clients_parse_section(CONF_SECTION *section, UNUSED bool tls_required)
#endif
{
bool global = false, in_server = false;
CONF_SECTION *cs;
RADCLIENT *c;
RADCLIENT_LIST *clients;
/*
* Be forgiving. If there's already a clients, return
* it. Otherwise create a new one.
*/
clients = cf_data_find(section, "clients");
if (clients) return clients;
clients = clients_init(section);
if (!clients) return NULL;
if (cf_top_section(section) == section) global = true;
if (strcmp("server", cf_section_name1(section)) == 0) in_server = true;
/*
* Associate the clients structure with the section.
*/
if (cf_data_add(section, "clients", clients, NULL) < 0) {
cf_log_err_cs(section,
"Failed to associate clients with section %s",
cf_section_name1(section));
clients_free(clients);
return NULL;
}
for (cs = cf_subsection_find_next(section, NULL, "client");
cs != NULL;
cs = cf_subsection_find_next(section, cs, "client")) {
c = client_parse(cs, in_server);
if (!c) {
return NULL;
}
#ifdef WITH_TLS
/*
* TLS clients CANNOT use non-TLS listeners.
* non-TLS clients CANNOT use TLS listeners.
*/
if (tls_required != c->tls_required) {
cf_log_err_cs(cs, "Client does not have the same TLS configuration as the listener");
client_free(c);
clients_free(clients);
return NULL;
}
#endif
/*
* FIXME: Add the client as data via cf_data_add,
* for migration issues.
*/
#ifdef WITH_DYNAMIC_CLIENTS
#ifdef HAVE_DIRENT_H
if (c->client_server) {
char const *value;
CONF_PAIR *cp;
DIR *dir;
struct dirent *dp;
struct stat stat_buf;
char buf2[2048];
/*
* Find the directory where individual
* client definitions are stored.
*/
cp = cf_pair_find(cs, "directory");
if (!cp) goto add_client;
value = cf_pair_value(cp);
if (!value) {
cf_log_err_cs(cs,
"The \"directory\" entry must not be empty");
client_free(c);
return NULL;
}
DEBUG("including dynamic clients in %s", value);
dir = opendir(value);
if (!dir) {
cf_log_err_cs(cs, "Error reading directory %s: %s", value, fr_syserror(errno));
client_free(c);
return NULL;
}
/*
* Read the directory, ignoring "." files.
*/
while ((dp = readdir(dir)) != NULL) {
char const *p;
RADCLIENT *dc;
if (dp->d_name[0] == '.') continue;
/*
* Check for valid characters
*/
for (p = dp->d_name; *p != '\0'; p++) {
if (isalpha((int)*p) ||
isdigit((int)*p) ||
(*p == ':') ||
(*p == '.')) continue;
break;
}
if (*p != '\0') continue;
snprintf(buf2, sizeof(buf2), "%s/%s",
value, dp->d_name);
if ((stat(buf2, &stat_buf) != 0) ||
S_ISDIR(stat_buf.st_mode)) continue;
dc = client_read(buf2, in_server, true);
if (!dc) {
cf_log_err_cs(cs,
"Failed reading client file \"%s\"", buf2);
client_free(c);
closedir(dir);
return NULL;
}
/*
* Validate, and add to the list.
*/
if (!client_validate(clients, c, dc)) {
client_free(c);
closedir(dir);
return NULL;
}
} /* loop over the directory */
closedir(dir);
}
#endif /* HAVE_DIRENT_H */
add_client:
#endif /* WITH_DYNAMIC_CLIENTS */
if (!client_add(clients, c)) {
cf_log_err_cs(cs,
"Failed to add client %s",
cf_section_name2(cs));
client_free(c);
return NULL;
}
}
/*
* Replace the global list of clients with the new one.
* The old one is still referenced from the original
* configuration, and will be freed when that is freed.
*/
if (global) {
root_clients = clients;
}
return clients;
}
