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transmission/libtransmission/rpc-server.c

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/*
* This file Copyright (C) 2008-2014 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
* $Id$
*/
#include <assert.h>
#include <errno.h>
#include <string.h> /* memcpy */
#include <zlib.h>
#include <event2/buffer.h>
#include <event2/event.h>
#include <event2/http.h>
#include <event2/http_struct.h> /* TODO: eventually remove this */
#include "transmission.h"
#include "crypto.h" /* tr_cryptoRandBuf (), tr_ssha1_matches () */
#include "fdlimit.h"
#include "list.h"
#include "log.h"
#include "net.h"
#include "platform.h" /* tr_getWebClientDir () */
#include "ptrarray.h"
#include "rpcimpl.h"
#include "rpc-server.h"
#include "session.h"
#include "trevent.h"
#include "utils.h"
#include "variant.h"
#include "web.h"
/* session-id is used to make cross-site request forgery attacks difficult.
* Don't disable this feature unless you really know what you're doing!
* http://en.wikipedia.org/wiki/Cross-site_request_forgery
* http://shiflett.org/articles/cross-site-request-forgeries
* http://www.webappsec.org/lists/websecurity/archive/2008-04/msg00037.html */
#define REQUIRE_SESSION_ID
#define MY_NAME "RPC Server"
#define MY_REALM "Transmission"
#define TR_N_ELEMENTS(ary) (sizeof (ary) / sizeof (*ary))
struct tr_rpc_server
{
bool isEnabled;
bool isPasswordEnabled;
bool isWhitelistEnabled;
tr_port port;
char * url;
struct in_addr bindAddress;
struct evhttp * httpd;
tr_session * session;
char * username;
char * password;
char * whitelistStr;
tr_list * whitelist;
char * sessionId;
time_t sessionIdExpiresAt;
bool isStreamInitialized;
z_stream stream;
};
#define dbgmsg(...) \
do { \
if (tr_logGetDeepEnabled ()) \
tr_logAddDeep (__FILE__, __LINE__, MY_NAME, __VA_ARGS__); \
} while (0)
/***
****
***/
static char*
get_current_session_id (struct tr_rpc_server * server)
{
const time_t now = tr_time ();
if (!server->sessionId || (now >= server->sessionIdExpiresAt))
{
int i;
const int n = 48;
const char * pool = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
const size_t pool_size = strlen (pool);
unsigned char * buf = tr_new (unsigned char, n+1);
tr_cryptoRandBuf (buf, n);
for (i=0; i<n; ++i)
buf[i] = pool[ buf[i] % pool_size ];
buf[n] = '\0';
tr_free (server->sessionId);
server->sessionId = (char*) buf;
server->sessionIdExpiresAt = now + (60*60); /* expire in an hour */
}
return server->sessionId;
}
/**
***
**/
static void
send_simple_response (struct evhttp_request * req,
int code,
const char * text)
{
const char * code_text = tr_webGetResponseStr (code);
struct evbuffer * body = evbuffer_new ();
evbuffer_add_printf (body, "<h1>%d: %s</h1>", code, code_text);
if (text)
evbuffer_add_printf (body, "%s", text);
evhttp_send_reply (req, code, code_text, body);
evbuffer_free (body);
}
struct tr_mimepart
{
char * headers;
int headers_len;
char * body;
int body_len;
};
static void
tr_mimepart_free (struct tr_mimepart * p)
{
tr_free (p->body);
tr_free (p->headers);
tr_free (p);
}
static void
extract_parts_from_multipart (const struct evkeyvalq * headers,
struct evbuffer * body,
tr_ptrArray * setme_parts)
{
const char * content_type = evhttp_find_header (headers, "Content-Type");
const char * in = (const char*) evbuffer_pullup (body, -1);
size_t inlen = evbuffer_get_length (body);
const char * boundary_key = "boundary=";
const char * boundary_key_begin = content_type ? strstr (content_type, boundary_key) : NULL;
const char * boundary_val = boundary_key_begin ? boundary_key_begin + strlen (boundary_key) : "arglebargle";
char * boundary = tr_strdup_printf ("--%s", boundary_val);
const size_t boundary_len = strlen (boundary);
const char * delim = tr_memmem (in, inlen, boundary, boundary_len);
while (delim)
{
size_t part_len;
const char * part = delim + boundary_len;
inlen -= (part - in);
in = part;
delim = tr_memmem (in, inlen, boundary, boundary_len);
part_len = delim ? (size_t)(delim - part) : inlen;
if (part_len)
{
const char * rnrn = tr_memmem (part, part_len, "\r\n\r\n", 4);
if (rnrn)
{
struct tr_mimepart * p = tr_new (struct tr_mimepart, 1);
p->headers_len = rnrn - part;
p->headers = tr_strndup (part, p->headers_len);
p->body_len = (part+part_len) - (rnrn + 4);
p->body = tr_strndup (rnrn+4, p->body_len);
tr_ptrArrayAppend (setme_parts, p);
}
}
}
tr_free (boundary);
}
static void
handle_upload (struct evhttp_request * req,
struct tr_rpc_server * server)
{
if (req->type != EVHTTP_REQ_POST)
{
send_simple_response (req, 405, NULL);
}
else
{
int i;
int n;
bool hasSessionId = false;
tr_ptrArray parts = TR_PTR_ARRAY_INIT;
const char * query = strchr (req->uri, '?');
const bool paused = query && strstr (query + 1, "paused=true");
extract_parts_from_multipart (req->input_headers, req->input_buffer, &parts);
n = tr_ptrArraySize (&parts);
/* first look for the session id */
for (i=0; i<n; ++i)
{
struct tr_mimepart * p = tr_ptrArrayNth (&parts, i);
if (tr_memmem (p->headers, p->headers_len, TR_RPC_SESSION_ID_HEADER, strlen (TR_RPC_SESSION_ID_HEADER)))
break;
}
if (i<n)
{
const struct tr_mimepart * p = tr_ptrArrayNth (&parts, i);
const char * ours = get_current_session_id (server);
const int ourlen = strlen (ours);
hasSessionId = ourlen<=p->body_len && !memcmp (p->body, ours, ourlen);
}
if (!hasSessionId)
{
int code = 409;
const char * codetext = tr_webGetResponseStr (code);
struct evbuffer * body = evbuffer_new ();
evbuffer_add_printf (body, "%s", "{ \"success\": false, \"msg\": \"Bad Session-Id\" }");;
evhttp_send_reply (req, code, codetext, body);
evbuffer_free (body);
}
else for (i=0; i<n; ++i)
{
struct tr_mimepart * p = tr_ptrArrayNth (&parts, i);
int body_len = p->body_len;
tr_variant top, *args;
tr_variant test;
bool have_source = false;
char * body = p->body;
if (body_len >= 2 && !memcmp (&body[body_len - 2], "\r\n", 2))
body_len -= 2;
tr_variantInitDict (&top, 2);
tr_variantDictAddStr (&top, TR_KEY_method, "torrent-add");
args = tr_variantDictAddDict (&top, TR_KEY_arguments, 2);
tr_variantDictAddBool (args, TR_KEY_paused, paused);
if (tr_urlIsValid (body, body_len))
{
tr_variantDictAddRaw (args, TR_KEY_filename, body, body_len);
have_source = true;
}
else if (!tr_variantFromBenc (&test, body, body_len))
{
char * b64 = tr_base64_encode (body, body_len, NULL);
tr_variantDictAddStr (args, TR_KEY_metainfo, b64);
tr_free (b64);
have_source = true;
}
if (have_source)
{
struct evbuffer * json = tr_variantToBuf (&top, TR_VARIANT_FMT_JSON);
tr_rpc_request_exec_json (server->session,
evbuffer_pullup (json, -1),
evbuffer_get_length (json),
NULL, NULL);
evbuffer_free (json);
}
tr_variantFree (&top);
}
tr_ptrArrayDestruct (&parts, (PtrArrayForeachFunc)tr_mimepart_free);
/* send "success" response */
{
int code = HTTP_OK;
const char * codetext = tr_webGetResponseStr (code);
struct evbuffer * body = evbuffer_new ();
evbuffer_add_printf (body, "%s", "{ \"success\": true, \"msg\": \"Torrent Added\" }");;
evhttp_send_reply (req, code, codetext, body);
evbuffer_free (body);
}
}
}
/***
****
***/
static const char*
mimetype_guess (const char * path)
{
unsigned int i;
const struct {
const char * suffix;
const char * mime_type;
} types[] = {
/* these are the ones we need for serving the web client's files... */
{ "css", "text/css" },
{ "gif", "image/gif" },
{ "html", "text/html" },
{ "ico", "image/vnd.microsoft.icon" },
{ "js", "application/javascript" },
{ "png", "image/png" }
};
const char * dot = strrchr (path, '.');
for (i = 0; dot && i < TR_N_ELEMENTS (types); ++i)
if (!strcmp (dot + 1, types[i].suffix))
return types[i].mime_type;
return "application/octet-stream";
}
static void
add_response (struct evhttp_request * req,
struct tr_rpc_server * server,
struct evbuffer * out,
struct evbuffer * content)
{
const char * key = "Accept-Encoding";
const char * encoding = evhttp_find_header (req->input_headers, key);
const int do_compress = encoding && strstr (encoding, "gzip");
if (!do_compress)
{
evbuffer_add_buffer (out, content);
}
else
{
int state;
struct evbuffer_iovec iovec[1];
void * content_ptr = evbuffer_pullup (content, -1);
const size_t content_len = evbuffer_get_length (content);
if (!server->isStreamInitialized)
{
int compressionLevel;
server->isStreamInitialized = true;
server->stream.zalloc = (alloc_func) Z_NULL;
server->stream.zfree = (free_func) Z_NULL;
server->stream.opaque = (voidpf) Z_NULL;
/* zlib's manual says: "Add 16 to windowBits to write a simple gzip header
* and trailer around the compressed data instead of a zlib wrapper." */
#ifdef TR_LIGHTWEIGHT
compressionLevel = Z_DEFAULT_COMPRESSION;
#else
compressionLevel = Z_BEST_COMPRESSION;
#endif
deflateInit2 (&server->stream, compressionLevel, Z_DEFLATED, 15+16, 8, Z_DEFAULT_STRATEGY);
}
server->stream.next_in = content_ptr;
server->stream.avail_in = content_len;
/* allocate space for the raw data and call deflate () just once --
* we won't use the deflated data if it's longer than the raw data,
* so it's okay to let deflate () run out of output buffer space */
evbuffer_reserve_space (out, content_len, iovec, 1);
server->stream.next_out = iovec[0].iov_base;
server->stream.avail_out = iovec[0].iov_len;
state = deflate (&server->stream, Z_FINISH);
if (state == Z_STREAM_END)
{
iovec[0].iov_len -= server->stream.avail_out;
#if 0
fprintf (stderr, "compressed response is %.2f of original (raw==%"TR_PRIuSIZE" bytes; compressed==%"TR_PRIuSIZE")\n",
(double)evbuffer_get_length (out)/content_len,
content_len, evbuffer_get_length (out));
#endif
evhttp_add_header (req->output_headers,
"Content-Encoding", "gzip");
}
else
{
memcpy (iovec[0].iov_base, content_ptr, content_len);
iovec[0].iov_len = content_len;
}
evbuffer_commit_space (out, iovec, 1);
deflateReset (&server->stream);
}
}
static void
add_time_header (struct evkeyvalq * headers,
const char * key,
time_t value)
{
/* According to RFC 2616 this must follow RFC 1123's date format,
so use gmtime instead of localtime... */
char buf[128];
struct tm tm = *gmtime (&value);
strftime (buf, sizeof (buf), "%a, %d %b %Y %H:%M:%S GMT", &tm);
evhttp_add_header (headers, key, buf);
}
static void
evbuffer_ref_cleanup_tr_free (const void * data UNUSED,
size_t datalen UNUSED,
void * extra)
{
tr_free (extra);
}
static void
serve_file (struct evhttp_request * req,
struct tr_rpc_server * server,
const char * filename)
{
if (req->type != EVHTTP_REQ_GET)
{
evhttp_add_header (req->output_headers, "Allow", "GET");
send_simple_response (req, 405, NULL);
}
else
{
void * file;
size_t file_len;
struct evbuffer * content;
const int error = errno;
errno = 0;
file_len = 0;
file = tr_loadFile (filename, &file_len);
content = evbuffer_new ();
evbuffer_add_reference (content, file, file_len, evbuffer_ref_cleanup_tr_free, file);
if (errno)
{
char * tmp = tr_strdup_printf ("%s (%s)", filename, tr_strerror (errno));
send_simple_response (req, HTTP_NOTFOUND, tmp);
tr_free (tmp);
}
else
{
struct evbuffer * out;
const time_t now = tr_time ();
errno = error;
out = evbuffer_new ();
evhttp_add_header (req->output_headers, "Content-Type", mimetype_guess (filename));
add_time_header (req->output_headers, "Date", now);
add_time_header (req->output_headers, "Expires", now+ (24*60*60));
add_response (req, server, out, content);
evhttp_send_reply (req, HTTP_OK, "OK", out);
evbuffer_free (out);
}
evbuffer_free (content);
}
}
static void
handle_web_client (struct evhttp_request * req,
struct tr_rpc_server * server)
{
const char * webClientDir = tr_getWebClientDir (server->session);
if (!webClientDir || !*webClientDir)
{
send_simple_response (req, HTTP_NOTFOUND,
"<p>Couldn't find Transmission's web interface files!</p>"
"<p>Users: to tell Transmission where to look, "
"set the TRANSMISSION_WEB_HOME environment "
"variable to the folder where the web interface's "
"index.html is located.</p>"
"<p>Package Builders: to set a custom default at compile time, "
"#define PACKAGE_DATA_DIR in libtransmission/platform.c "
"or tweak tr_getClutchDir () by hand.</p>");
}
else
{
char * pch;
char * subpath;
subpath = tr_strdup (req->uri + strlen (server->url) + 4);
if ((pch = strchr (subpath, '?')))
*pch = '\0';
if (strstr (subpath, ".."))
{
send_simple_response (req, HTTP_NOTFOUND, "<p>Tsk, tsk.</p>");
}
else
{
char * filename = tr_strdup_printf ("%s%s%s",
webClientDir,
TR_PATH_DELIMITER_STR,
subpath && *subpath ? subpath : "index.html");
serve_file (req, server, filename);
tr_free (filename);
}
tr_free (subpath);
}
}
struct rpc_response_data
{
struct evhttp_request * req;
struct tr_rpc_server * server;
};
static void
rpc_response_func (tr_session * session UNUSED,
struct evbuffer * response,
void * user_data)
{
struct rpc_response_data * data = user_data;
struct evbuffer * buf = evbuffer_new ();
add_response (data->req, data->server, buf, response);
evhttp_add_header (data->req->output_headers,
"Content-Type", "application/json; charset=UTF-8");
evhttp_send_reply (data->req, HTTP_OK, "OK", buf);
evbuffer_free (buf);
tr_free (data);
}
static void
handle_rpc_from_json (struct evhttp_request * req,
struct tr_rpc_server * server,
const char * json,
size_t json_len)
{
struct rpc_response_data * data;
data = tr_new0 (struct rpc_response_data, 1);
data->req = req;
data->server = server;
tr_rpc_request_exec_json (server->session, json, json_len, rpc_response_func, data);
}
static void
handle_rpc (struct evhttp_request * req, struct tr_rpc_server * server)
{
const char * q;
if (req->type == EVHTTP_REQ_POST)
{
handle_rpc_from_json (req, server,
(const char *) evbuffer_pullup (req->input_buffer, -1),
evbuffer_get_length (req->input_buffer));
}
else if ((req->type == EVHTTP_REQ_GET) && ((q = strchr (req->uri, '?'))))
{
struct rpc_response_data * data = tr_new0 (struct rpc_response_data, 1);
data->req = req;
data->server = server;
tr_rpc_request_exec_uri (server->session, q+1, -1, rpc_response_func, data);
}
else
{
send_simple_response (req, 405, NULL);
}
}
static bool
isAddressAllowed (const tr_rpc_server * server, const char * address)
{
tr_list * l;
if (!server->isWhitelistEnabled)
return true;
for (l=server->whitelist; l!=NULL; l=l->next)
if (tr_wildmat (address, l->data))
return true;
return false;
}
static bool
test_session_id (struct tr_rpc_server * server, struct evhttp_request * req)
{
const char * ours = get_current_session_id (server);
const char * theirs = evhttp_find_header (req->input_headers, TR_RPC_SESSION_ID_HEADER);
const bool success = theirs && !strcmp (theirs, ours);
return success;
}
static void
handle_request (struct evhttp_request * req, void * arg)
{
struct tr_rpc_server * server = arg;
if (req && req->evcon)
{
const char * auth;
char * user = NULL;
char * pass = NULL;
evhttp_add_header (req->output_headers, "Server", MY_REALM);
auth = evhttp_find_header (req->input_headers, "Authorization");
if (auth && !evutil_ascii_strncasecmp (auth, "basic ", 6))
{
int plen;
char * p = tr_base64_decode (auth + 6, 0, &plen);
if (p && plen && ((pass = strchr (p, ':'))))
{
user = p;
*pass++ = '\0';
}
}
if (!isAddressAllowed (server, req->remote_host))
{
send_simple_response (req, 403,
"<p>Unauthorized IP Address.</p>"
"<p>Either disable the IP address whitelist or add your address to it.</p>"
"<p>If you're editing settings.json, see the 'rpc-whitelist' and 'rpc-whitelist-enabled' entries.</p>"
"<p>If you're still using ACLs, use a whitelist instead. See the transmission-daemon manpage for details.</p>");
}
else if (server->isPasswordEnabled
&& (!pass || !user || strcmp (server->username, user)
|| !tr_ssha1_matches (server->password,
pass)))
{
evhttp_add_header (req->output_headers,
"WWW-Authenticate",
"Basic realm=\"" MY_REALM "\"");
send_simple_response (req, 401, "Unauthorized User");
}
else if (strncmp (req->uri, server->url, strlen (server->url)))
{
char * location = tr_strdup_printf ("%sweb/", server->url);
evhttp_add_header (req->output_headers, "Location", location);
send_simple_response (req, HTTP_MOVEPERM, NULL);
tr_free (location);
}
else if (!strncmp (req->uri + strlen (server->url), "web/", 4))
{
handle_web_client (req, server);
}
else if (!strcmp (req->uri + strlen (server->url), "upload"))
{
handle_upload (req, server);
}
#ifdef REQUIRE_SESSION_ID
else if (!test_session_id (server, req))
{
const char * sessionId = get_current_session_id (server);
char * tmp = tr_strdup_printf (
"<p>Your request had an invalid session-id header.</p>"
"<p>To fix this, follow these steps:"
"<ol><li> When reading a response, get its X-Transmission-Session-Id header and remember it"
"<li> Add the updated header to your outgoing requests"
"<li> When you get this 409 error message, resend your request with the updated header"
"</ol></p>"
"<p>This requirement has been added to help prevent "
"<a href=\"http://en.wikipedia.org/wiki/Cross-site_request_forgery\">CSRF</a> "
"attacks.</p>"
"<p><code>%s: %s</code></p>",
TR_RPC_SESSION_ID_HEADER, sessionId);
evhttp_add_header (req->output_headers, TR_RPC_SESSION_ID_HEADER, sessionId);
send_simple_response (req, 409, tmp);
tr_free (tmp);
}
#endif
else if (!strncmp (req->uri + strlen (server->url), "rpc", 3))
{
handle_rpc (req, server);
}
else
{
send_simple_response (req, HTTP_NOTFOUND, req->uri);
}
tr_free (user);
}
}
static void
startServer (void * vserver)
{
tr_rpc_server * server = vserver;
tr_address addr;
if (!server->httpd)
{
addr.type = TR_AF_INET;
addr.addr.addr4 = server->bindAddress;
server->httpd = evhttp_new (server->session->event_base);
evhttp_bind_socket (server->httpd, tr_address_to_string (&addr), server->port);
evhttp_set_gencb (server->httpd, handle_request, server);
}
}
static void
stopServer (tr_rpc_server * server)
{
if (server->httpd)
{
evhttp_free (server->httpd);
server->httpd = NULL;
}
}
static void
onEnabledChanged (void * vserver)
{
tr_rpc_server * server = vserver;
if (!server->isEnabled)
stopServer (server);
else
startServer (server);
}
void
tr_rpcSetEnabled (tr_rpc_server * server,
bool isEnabled)
{
server->isEnabled = isEnabled;
tr_runInEventThread (server->session, onEnabledChanged, server);
}
bool
tr_rpcIsEnabled (const tr_rpc_server * server)
{
return server->isEnabled;
}
static void
restartServer (void * vserver)
{
tr_rpc_server * server = vserver;
if (server->isEnabled)
{
stopServer (server);
startServer (server);
}
}
void
tr_rpcSetPort (tr_rpc_server * server,
tr_port port)
{
assert (server != NULL);
if (server->port != port)
{
server->port = port;
if (server->isEnabled)
tr_runInEventThread (server->session, restartServer, server);
}
}
tr_port
tr_rpcGetPort (const tr_rpc_server * server)
{
return server->port;
}
void
tr_rpcSetUrl (tr_rpc_server * server, const char * url)
{
char * tmp = server->url;
server->url = tr_strdup (url);
dbgmsg ("setting our URL to [%s]", server->url);
tr_free (tmp);
}
const char*
tr_rpcGetUrl (const tr_rpc_server * server)
{
return server->url ? server->url : "";
}
void
tr_rpcSetWhitelist (tr_rpc_server * server, const char * whitelistStr)
{
void * tmp;
const char * walk;
/* keep the string */
tmp = server->whitelistStr;
server->whitelistStr = tr_strdup (whitelistStr);
tr_free (tmp);
/* clear out the old whitelist entries */
while ((tmp = tr_list_pop_front (&server->whitelist)))
tr_free (tmp);
/* build the new whitelist entries */
for (walk=whitelistStr; walk && *walk;)
{
const char * delimiters = " ,;";
const size_t len = strcspn (walk, delimiters);
char * token = tr_strndup (walk, len);
tr_list_append (&server->whitelist, token);
if (strcspn (token, "+-") < len)
tr_logAddNamedInfo (MY_NAME, "Adding address to whitelist: %s (And it has a '+' or '-'! Are you using an old ACL by mistake?)", token);
else
tr_logAddNamedInfo (MY_NAME, "Adding address to whitelist: %s", token);
if (walk[len]=='\0')
break;
walk += len + 1;
}
}
const char*
tr_rpcGetWhitelist (const tr_rpc_server * server)
{
return server->whitelistStr ? server->whitelistStr : "";
}
void
tr_rpcSetWhitelistEnabled (tr_rpc_server * server,
bool isEnabled)
{
assert (tr_isBool (isEnabled));
server->isWhitelistEnabled = isEnabled;
}
bool
tr_rpcGetWhitelistEnabled (const tr_rpc_server * server)
{
return server->isWhitelistEnabled;
}
/****
***** PASSWORD
****/
void
tr_rpcSetUsername (tr_rpc_server * server, const char * username)
{
char * tmp = server->username;
server->username = tr_strdup (username);
dbgmsg ("setting our Username to [%s]", server->username);
tr_free (tmp);
}
const char*
tr_rpcGetUsername (const tr_rpc_server * server)
{
return server->username ? server->username : "";
}
void
tr_rpcSetPassword (tr_rpc_server * server,
const char * password)
{
tr_free (server->password);
if (*password != '{')
server->password = tr_ssha1 (password);
else
server->password = strdup (password);
dbgmsg ("setting our Password to [%s]", server->password);
}
const char*
tr_rpcGetPassword (const tr_rpc_server * server)
{
return server->password ? server->password : "" ;
}
void
tr_rpcSetPasswordEnabled (tr_rpc_server * server, bool isEnabled)
{
server->isPasswordEnabled = isEnabled;
dbgmsg ("setting 'password enabled' to %d", (int)isEnabled);
}
bool
tr_rpcIsPasswordEnabled (const tr_rpc_server * server)
{
return server->isPasswordEnabled;
}
const char *
tr_rpcGetBindAddress (const tr_rpc_server * server)
{
tr_address addr;
addr.type = TR_AF_INET;
addr.addr.addr4 = server->bindAddress;
return tr_address_to_string (&addr);
}
/****
***** LIFE CYCLE
****/
static void
closeServer (void * vserver)
{
void * tmp;
tr_rpc_server * s = vserver;
stopServer (s);
while ((tmp = tr_list_pop_front (&s->whitelist)))
tr_free (tmp);
if (s->isStreamInitialized)
deflateEnd (&s->stream);
tr_free (s->url);
tr_free (s->sessionId);
tr_free (s->whitelistStr);
tr_free (s->username);
tr_free (s->password);
tr_free (s);
}
void
tr_rpcClose (tr_rpc_server ** ps)
{
tr_runInEventThread ((*ps)->session, closeServer, *ps);
*ps = NULL;
}
static void
missing_settings_key (const tr_quark q)
{
const char * str = tr_quark_get_string (q, NULL);
tr_logAddNamedError (MY_NAME, _("Couldn't find settings key \"%s\""), str);
}
tr_rpc_server *
tr_rpcInit (tr_session * session, tr_variant * settings)
{
tr_rpc_server * s;
bool boolVal;
int64_t i;
const char * str;
tr_quark key;
tr_address address;
s = tr_new0 (tr_rpc_server, 1);
s->session = session;
key = TR_KEY_rpc_enabled;
if (!tr_variantDictFindBool (settings, key, &boolVal))
missing_settings_key (key);
else
s->isEnabled = boolVal;
key = TR_KEY_rpc_port;
if (!tr_variantDictFindInt (settings, key, &i))
missing_settings_key (key);
else
s->port = i;
key = TR_KEY_rpc_url;
if (!tr_variantDictFindStr (settings, key, &str, NULL))
missing_settings_key (key);
else
s->url = tr_strdup (str);
key = TR_KEY_rpc_whitelist_enabled;
if (!tr_variantDictFindBool (settings, key, &boolVal))
missing_settings_key (key);
else
tr_rpcSetWhitelistEnabled (s, boolVal);
key = TR_KEY_rpc_authentication_required;
if (!tr_variantDictFindBool (settings, key, &boolVal))
missing_settings_key (key);
else
tr_rpcSetPasswordEnabled (s, boolVal);
key = TR_KEY_rpc_whitelist;
if (!tr_variantDictFindStr (settings, key, &str, NULL) && str)
missing_settings_key (key);
else
tr_rpcSetWhitelist (s, str);
key = TR_KEY_rpc_username;
if (!tr_variantDictFindStr (settings, key, &str, NULL))
missing_settings_key (key);
else
tr_rpcSetUsername (s, str);
key = TR_KEY_rpc_password;
if (!tr_variantDictFindStr (settings, key, &str, NULL))
missing_settings_key (key);
else
tr_rpcSetPassword (s, str);
key = TR_KEY_rpc_bind_address;
if (!tr_variantDictFindStr (settings, key, &str, NULL))
{
missing_settings_key (key);
address = tr_inaddr_any;
}
else if (!tr_address_from_string (&address, str))
{
tr_logAddNamedError (MY_NAME, _("%s is not a valid address"), str);
address = tr_inaddr_any;
}
else if (address.type != TR_AF_INET)
{
tr_logAddNamedError (MY_NAME, _("%s is not an IPv4 address. RPC listeners must be IPv4"), str);
address = tr_inaddr_any;
}
s->bindAddress = address.addr.addr4;
if (s->isEnabled)
{
tr_logAddNamedInfo (MY_NAME, _("Serving RPC and Web requests on port 127.0.0.1:%d%s"), (int) s->port, s->url);
tr_runInEventThread (session, startServer, s);
if (s->isWhitelistEnabled)
tr_logAddNamedInfo (MY_NAME, "%s", _("Whitelist enabled"));
if (s->isPasswordEnabled)
tr_logAddNamedInfo (MY_NAME, "%s", _("Password required"));
}
return s;
}
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