NNTPGrab
root / trunk / nntpgrab_core / nntpconnection.c @ 1798
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/*
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Copyright (C) 2005-2010 Erik van Pienbroek |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include |
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|
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#ifdef WIN32
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#include |
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#include |
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#include |
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#include |
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#undef gai_strerror
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#define gai_strerror gai_strerrorA
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#define MSG_DONTWAIT 0 |
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#else
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#include |
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#include |
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#include |
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#include |
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#endif
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|
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#ifdef HAVE_LIBPROXY
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#include |
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#endif
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#include "strptime.h" |
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#include "nntpconnection.h" |
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#include "nntpgrab_internal.h" |
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#include "nntpgrab_plugin.h" |
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#include "download_queue.h" |
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#include "download_thread.h" |
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#include "collection_alloc.h" |
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|
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#ifndef WIN32
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#define O_BINARY 0 |
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#endif
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// Keep track of the number of bytes received for the last 10 seconds
|
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static struct timeval tv_last_traffic_monitor_flush = { 0, 0 }; |
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static volatile int bytes_received_in_last_sec; |
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static gboolean abort_traffic_thread = FALSE;
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|
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/* declaration for throttle.c */
|
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void throttle_pause(struct timeval start_time, off_t xferlen, int max_bandwidth); |
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|
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static void |
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strip_newline(char *line)
|
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{
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if (line[strlen(line) - 1] == '\n') { |
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line[strlen(line) - 1] = '\0'; |
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} |
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|
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if (line[strlen(line) - 1] == '\r') { |
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line[strlen(line) - 1] = '\0'; |
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} |
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} |
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|
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static int |
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get_status_code(const char *line) |
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{
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/* The status code is mentioned at the first 3 characters of the line.
|
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* atoi() doesn't detect errors and quits parsing after the first invalid |
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* character which is enough for us */ |
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if (!line) {
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return -1; |
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} |
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|
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return atoi(line);
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} |
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|
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#ifdef WIN32
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static char * |
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WSAGetStrError(int err)
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{
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LPVOID lpMsgBuf; |
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char *ret;
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|
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FormatMessageA( |
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FORMAT_MESSAGE_ALLOCATE_BUFFER | |
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FORMAT_MESSAGE_FROM_SYSTEM | |
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FORMAT_MESSAGE_IGNORE_INSERTS, |
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NULL,
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(DWORD) err, |
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0,
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(LPTSTR) &lpMsgBuf, |
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0, NULL ); |
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ret = g_strdup(lpMsgBuf); |
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strip_newline(ret); |
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LocalFree(lpMsgBuf); |
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return ret;
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} |
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|
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int gettimeofday (struct timeval *tv, void* tz) |
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{
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union {
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long long ns100; /*time since 1 Jan 1601 in 100ns units */ |
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FILETIME ft; |
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} now; |
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|
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GetSystemTimeAsFileTime (&now.ft); |
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tv->tv_usec = (long) ((now.ns100 / 10LL) % 1000000LL); |
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tv->tv_sec = (long) ((now.ns100 - 116444736000000000LL) / 10000000LL); |
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return (0); |
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} |
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|
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void timersub(struct timeval *a, struct timeval *b, struct timeval *res) |
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{
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res->tv_sec = a->tv_sec - b->tv_sec; |
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res->tv_usec = a->tv_usec - b->tv_usec; |
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if (res->tv_usec < 0) { |
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res->tv_sec--; |
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res->tv_usec += 1000000;
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} |
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} |
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#endif
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|
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gpointer |
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traffic_thread_func(gpointer data) |
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{
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int bytes_received[10]; |
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int empty_buf[10]; |
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gboolean null_buf_sent = FALSE; |
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time_t timestamp = 0;
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#if 0
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int i; |
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#endif |
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|
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memset(&bytes_received, 0, sizeof(bytes_received)); |
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memset(empty_buf, 0, sizeof(empty_buf)); |
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|
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while (!abort_traffic_thread) {
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time_t prev_timestamp; |
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// Traffic monitoring
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prev_timestamp = timestamp; |
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timestamp = time(NULL);
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|
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if (timestamp > prev_timestamp) {
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time_t diff; |
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int bytes_received_copy[10]; |
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int val;
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|
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// Calculate how many steps we need to shift
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diff = timestamp - prev_timestamp; |
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if (diff > 10) { |
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diff = 10;
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} |
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/* This is not fully atomic, but will do for our goal */
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val = g_atomic_int_get(&bytes_received_in_last_sec); |
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bytes_received[9] = g_atomic_int_exchange_and_add(&bytes_received_in_last_sec, -val);
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if (bytes_received[9] < 0) { |
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bytes_received[9] = 0; |
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} |
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memcpy(bytes_received_copy, bytes_received, sizeof(bytes_received));
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|
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// Shift all the previous values by 'diff'
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memmove(bytes_received, &bytes_received[diff], (10 - diff) * sizeof(int)); |
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memset(&bytes_received[10 - diff], 0, diff * sizeof(int)); |
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|
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gettimeofday(&tv_last_traffic_monitor_flush, NULL);
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// Notify upstream about our values
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// If there hasn't been any sane data, send a empty buffer 1 time
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if (!memcmp(bytes_received_copy, empty_buf, sizeof(empty_buf))) { |
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if (!null_buf_sent) {
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null_buf_sent = TRUE; |
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nntpgrab_core_emit_traffic_monitor_update(FALSE, bytes_received_copy, timestamp); |
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} |
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} else {
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nntpgrab_core_emit_traffic_monitor_update(FALSE, bytes_received_copy, timestamp); |
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null_buf_sent = FALSE; |
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} |
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#if 0
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g_print("stamp = %li\n", timestamp);
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for (i = 0; i < 10; i++) {
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g_print("bytes_received[%i] = %i\n", i, bytes_received[i]);
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} |
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g_print("\n");
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#endif |
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} |
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g_usleep(G_USEC_PER_SEC * 1);
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} |
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return NULL; |
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} |
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|
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static void |
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update_traffic_monitor(int bytes_read)
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{
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g_atomic_int_add(&bytes_received_in_last_sec, bytes_read); |
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} |
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static gboolean
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get_proxy_settings(const char *hostname, char **proxy_host, int *proxy_port) |
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{
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#ifdef HAVE_LIBPROXY
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static pxProxyFactory *proxy = NULL; |
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static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
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char hostname_with_https[256]; |
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char **proxies;
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char **values;
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int offset;
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g_return_val_if_fail(hostname != NULL, FALSE);
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g_return_val_if_fail(proxy_host != NULL, FALSE);
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g_return_val_if_fail(proxy_port != NULL, FALSE);
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/* initialize libproxy if it isn't already */
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g_static_mutex_lock(&mutex); |
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if (proxy == NULL) { |
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proxy = px_proxy_factory_new(); |
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} |
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g_static_mutex_unlock(&mutex); |
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/* libproxy requires the hostname to be prefixed with 'https://' */
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memset(&hostname_with_https, 0, sizeof(hostname_with_https)); |
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snprintf(hostname_with_https, sizeof(hostname_with_https) - 1, "https://%s", hostname); |
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if (!proxy) {
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ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "Unable to retrieve proxy information, pxProxyFactory() returned NULL"); |
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return FALSE;
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} |
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proxies = px_proxy_factory_get_proxies(proxy, hostname_with_https); |
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if (!proxies) {
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ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "Unable to retrieve proxy information, px_proxy_factory_get_proxies() returned NULL"); |
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return FALSE;
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} |
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|
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if (!proxies[0]) { |
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ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "Unable to retrieve proxy information, px_proxy_factory_get_proxies() returned an empty list"); |
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return FALSE;
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} |
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ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_DEBUG, "proxies[0] = %s", proxies[0]); |
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if (!strcmp(proxies[0], "direct://")) { |
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/* No proxy required */
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ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_DEBUG, "No proxy required for '%s'", hostname); |
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return FALSE;
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} |
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if (!strncmp(proxies[0], "https://", 7)) { |
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offset = 7;
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} else if (!strncmp(proxies[0], "https://", 8)) { |
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offset = 8;
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} else {
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offset = 0;
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} |
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values = g_strsplit(proxies[0] + offset, ":", -1); |
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if (!(values || values[0] || values[1])) { |
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ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_WARNING, "Unable to retrieve proxy information, proxy '%s' could not be parsed", proxies[0]); |
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return FALSE;
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} |
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*proxy_host = g_strdup(values[0]);
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*proxy_port = atoi(values[1]);
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g_strfreev(values); |
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ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_DEBUG, "Returned proxy '%s:%i' for host '%s'", *proxy_host, *proxy_port, hostname); |
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return TRUE;
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#else
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/* No libproxy support, assume we always have a direct connection */
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return FALSE;
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#endif
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} |
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void
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nntpconnection_init_libproxy(void)
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{
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char *proxy_host = NULL; |
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int proxy_port = 0; |
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|
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/* To avoid the situation where libproxy calls some X11 functions from a different
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* thread than the main loop we initialize libproxy here by performing a dummy query */ |
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if (get_proxy_settings("localhost", &proxy_host, &proxy_port)) { |
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g_free(proxy_host); |
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} |
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} |
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|
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static gboolean
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perform_recv(NNTPConnectionInfo *conn) |
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{
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int retval;
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#ifdef WIN32
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char *errmsg = NULL; |
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#endif
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g_return_val_if_fail(conn != NULL, FALSE);
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#ifdef HAVE_SSL
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#ifdef HAVE_GNUTLS
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if (conn->server_info.use_ssl) {
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retval = gnutls_record_recv(conn->ssl_session, conn->recv_buffer + conn->recv_buffer_length, sizeof(conn->recv_buffer) - conn->recv_buffer_length - 1); |
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if (retval < 0) { |
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switch (retval) {
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case GNUTLS_E_INTERRUPTED: |
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case GNUTLS_E_AGAIN: |
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retval = -1;
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#ifdef WIN32
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WSASetLastError(WSAEWOULDBLOCK); |
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#else
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errno = EAGAIN; |
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#endif
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break;
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default:
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g_print(__FILE__ ":%i gnutls_record_recv returned unknown value: %s (%i)\n", __LINE__, gnutls_strerror(retval), retval);
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retval = 0;
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break;
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} |
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} |
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} else
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#else
|
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if (conn->ssl) {
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int len = MIN(sizeof(conn->recv_buffer) - conn->recv_buffer_length - 1, 16384); /* SSL packets are at most 16KB large */ |
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retval = SSL_read(conn->ssl, conn->recv_buffer + conn->recv_buffer_length, len); |
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if (retval < 0) { |
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switch (SSL_get_error(conn->ssl, retval)) {
|
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case SSL_ERROR_WANT_READ: |
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case SSL_ERROR_WANT_WRITE: |
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#ifdef HAVE_NSS_COMPAT_OSSL
|
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case PR_PENDING_INTERRUPT_ERROR: |
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#endif
|
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retval = -1;
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#ifdef WIN32
|
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WSASetLastError(WSAEWOULDBLOCK); |
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#else
|
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errno = EAGAIN; |
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#endif
|
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break;
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|
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case SSL_ERROR_SSL: |
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retval = -1;
|
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#ifdef WIN32
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errno = ENOSYS; |
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#else
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errno = EPROTO; |
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#endif
|
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break;
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|
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default:
|
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g_print("Unknown SSL error detected on socket %i: %i\n", conn->poll_fd.fd, SSL_get_error(conn->ssl, retval));
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break;
|
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} |
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} |
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} else
|
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#endif
|
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#endif
|
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{
|
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retval = recv(conn->poll_fd.fd, conn->recv_buffer + conn->recv_buffer_length, sizeof(conn->recv_buffer) - conn->recv_buffer_length - 1, MSG_DONTWAIT); |
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} |
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|
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switch (retval) {
|
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case -1: /* Some error occured */ |
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#ifdef WIN32
|
| 390 |
if (WSAGetLastError() == WSAEWOULDBLOCK) {
|
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#else
|
| 392 |
if (errno == EAGAIN) {
|
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#endif
|
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/* Try again right now */
|
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//g_print("EAGAIN detected on socket %i (SSL = %i)\n", conn->poll_fd.fd, conn->server_info.use_ssl);
|
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//return perform_recv(conn);
|
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return FALSE;
|
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} |
| 399 |
|
| 400 |
#ifdef WIN32
|
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errmsg = WSAGetStrError(WSAGetLastError()); |
| 402 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_READ_ERROR, errmsg, __FILE__, __LINE__); |
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g_free(errmsg); |
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#else
|
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nntpconnection_disconnect_from_server(conn, DISCONNECT_READ_ERROR, strerror(errno), __FILE__, __LINE__); |
| 406 |
#endif
|
| 407 |
|
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return FALSE;
|
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|
| 410 |
case 0: /* Orderly shutdown has occured */ |
| 411 |
conn->active_method = NULL;
|
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return FALSE;
|
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|
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default:
|
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conn->recv_buffer_length += retval; |
| 416 |
|
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/* Perform traffic shaping if necessary */
|
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if (conn->max_bandwidth > 0) { |
| 419 |
/* Calculate the sum of the number of bytes received in the last 10 seconds */
|
| 420 |
int num_bytes_received = 0; |
| 421 |
|
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num_bytes_received = g_atomic_int_get(&bytes_received_in_last_sec); |
| 423 |
num_bytes_received += retval; |
| 424 |
throttle_pause(tv_last_traffic_monitor_flush, num_bytes_received, conn->max_bandwidth); |
| 425 |
} |
| 426 |
|
| 427 |
#ifdef HAVE_GNUTLS
|
| 428 |
if (!conn->server_info.use_ssl)
|
| 429 |
#endif
|
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update_traffic_monitor(retval); |
| 431 |
|
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break;
|
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} |
| 434 |
|
| 435 |
// nntpgrab_core_emit_debug_message(FALSE, "Received data from socket %i: %s", conn->connection_id, data);
|
| 436 |
|
| 437 |
return TRUE;
|
| 438 |
} |
| 439 |
|
| 440 |
static gboolean
|
| 441 |
nntpconnection_read_msg(NNTPConnectionInfo *conn, gboolean read_line, int max_length, void *data, int *data_length, gboolean *more_data_ready) |
| 442 |
{
|
| 443 |
int len;
|
| 444 |
|
| 445 |
g_return_val_if_fail(conn != NULL, FALSE);
|
| 446 |
g_return_val_if_fail(max_length > 0, FALSE);
|
| 447 |
g_return_val_if_fail(data != NULL, FALSE);
|
| 448 |
/* NOTE: data_length MIGHT be NULL */
|
| 449 |
/* NOTE: more_data_ready MIGHT be NULL */
|
| 450 |
|
| 451 |
if (more_data_ready) {
|
| 452 |
*more_data_ready = FALSE; |
| 453 |
} |
| 454 |
|
| 455 |
/* Avoid a buffer overflow */
|
| 456 |
/* This situation can happen when a line is really long */
|
| 457 |
if (conn->recv_buffer_length >= sizeof(conn->recv_buffer) - 1) { |
| 458 |
ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "nntpconnection_read_msg: Very long line received from server. Ignoring"); |
| 459 |
memset(conn->recv_buffer, 0, sizeof(conn->recv_buffer)); |
| 460 |
conn->recv_buffer_length = 0;
|
| 461 |
} |
| 462 |
|
| 463 |
/* Only read from the socket when there's no newline in the buffer */
|
| 464 |
if (!memchr(conn->recv_buffer, '\n', conn->recv_buffer_length)) { |
| 465 |
if (!perform_recv(conn)) {
|
| 466 |
return FALSE;
|
| 467 |
} |
| 468 |
|
| 469 |
/* Does the buffer contain a newline now? */
|
| 470 |
if (!memchr(conn->recv_buffer, '\n', conn->recv_buffer_length)) { |
| 471 |
/* Try again later */
|
| 472 |
return FALSE;
|
| 473 |
} |
| 474 |
} |
| 475 |
|
| 476 |
g_return_val_if_fail(conn->recv_buffer_length > 0, FALSE);
|
| 477 |
|
| 478 |
/* Calculate the size of the buffer which needs to be sent back to the caller */
|
| 479 |
char *newline = memchr(conn->recv_buffer, '\n', conn->recv_buffer_length); |
| 480 |
if (!newline) {
|
| 481 |
ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "nntpconnection_read_msg: Expected newline but didn't find any. contents = %s", conn->recv_buffer); |
| 482 |
return FALSE;
|
| 483 |
} |
| 484 |
|
| 485 |
len = newline - conn->recv_buffer + 1;
|
| 486 |
if (len > max_length) {
|
| 487 |
/* We're going to have to trim some data */
|
| 488 |
ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "nntpconnection_read_msg: Buffer isn't large enough, some data will be trimmed. contents = %s", conn->recv_buffer); |
| 489 |
len = max_length; |
| 490 |
} |
| 491 |
|
| 492 |
memcpy(data, conn->recv_buffer, len); |
| 493 |
|
| 494 |
if (read_line) {
|
| 495 |
strip_newline(data); |
| 496 |
} |
| 497 |
|
| 498 |
if (len == conn->recv_buffer_length) {
|
| 499 |
/* Everything in the buffer was sent */
|
| 500 |
conn->recv_buffer_length = 0;
|
| 501 |
memset(conn->recv_buffer, 0, sizeof(conn->recv_buffer)); |
| 502 |
} else {
|
| 503 |
/* Only part of the buffer was sent */
|
| 504 |
memmove(conn->recv_buffer, conn->recv_buffer + len, sizeof(conn->recv_buffer) - len);
|
| 505 |
conn->recv_buffer_length -= len; |
| 506 |
conn->recv_buffer[conn->recv_buffer_length] = '\0';
|
| 507 |
|
| 508 |
g_return_val_if_fail(conn->recv_buffer_length >= 0, FALSE);
|
| 509 |
|
| 510 |
if (more_data_ready) {
|
| 511 |
*more_data_ready = (memchr(conn->recv_buffer, '\n', conn->recv_buffer_length) != NULL); |
| 512 |
} |
| 513 |
} |
| 514 |
|
| 515 |
memset(conn->recv_buffer2, 0, sizeof(conn->recv_buffer2)); |
| 516 |
memcpy(conn->recv_buffer2, data, len); |
| 517 |
conn->recv_buffer_length2 = len; |
| 518 |
|
| 519 |
if (data_length) {
|
| 520 |
*data_length = len; |
| 521 |
} |
| 522 |
|
| 523 |
return TRUE;
|
| 524 |
} |
| 525 |
|
| 526 |
static gboolean
|
| 527 |
nntpconnection_send_msg(NNTPConnectionInfo *conn, void *data, int length) |
| 528 |
{
|
| 529 |
int retval;
|
| 530 |
int bytes_sent = 0; |
| 531 |
|
| 532 |
g_return_val_if_fail(conn != NULL, FALSE);
|
| 533 |
g_return_val_if_fail(data != NULL, FALSE);
|
| 534 |
|
| 535 |
if (length <= 0) { |
| 536 |
length = strlen(data); |
| 537 |
} |
| 538 |
|
| 539 |
do {
|
| 540 |
#ifdef HAVE_SSL
|
| 541 |
#ifdef HAVE_GNUTLS
|
| 542 |
if (conn->server_info.use_ssl) {
|
| 543 |
retval = gnutls_record_send(conn->ssl_session, data + bytes_sent, length - bytes_sent); |
| 544 |
} else
|
| 545 |
#else
|
| 546 |
if (conn->ssl) {
|
| 547 |
retval = SSL_write(conn->ssl, data + bytes_sent, length - bytes_sent); |
| 548 |
if (retval < 0) { |
| 549 |
switch (SSL_get_error(conn->ssl, retval)) {
|
| 550 |
case SSL_ERROR_WANT_READ: |
| 551 |
case SSL_ERROR_WANT_WRITE: |
| 552 |
retval = -1;
|
| 553 |
#ifdef WIN32
|
| 554 |
WSASetLastError(WSAEWOULDBLOCK); |
| 555 |
#else
|
| 556 |
errno = EAGAIN; |
| 557 |
#endif
|
| 558 |
break;
|
| 559 |
|
| 560 |
case SSL_ERROR_SSL: |
| 561 |
retval = -1;
|
| 562 |
#ifdef WIN32
|
| 563 |
errno = ENOSYS; |
| 564 |
#else
|
| 565 |
errno = EPROTO; |
| 566 |
#endif
|
| 567 |
break;
|
| 568 |
|
| 569 |
default:
|
| 570 |
break;
|
| 571 |
} |
| 572 |
} |
| 573 |
} else
|
| 574 |
#endif
|
| 575 |
#endif
|
| 576 |
{
|
| 577 |
retval = send(conn->poll_fd.fd, data + bytes_sent, length - bytes_sent, 0);
|
| 578 |
} |
| 579 |
|
| 580 |
switch (retval) {
|
| 581 |
case -1: /* Some error occured */ |
| 582 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_WRITE_ERROR, strerror(errno), __FILE__, __LINE__); |
| 583 |
return FALSE;
|
| 584 |
|
| 585 |
case 0: /* Orderly shutdown has occured */ |
| 586 |
conn->active_method = NULL;
|
| 587 |
return FALSE;
|
| 588 |
|
| 589 |
default:
|
| 590 |
bytes_sent += retval; |
| 591 |
|
| 592 |
if (bytes_sent == length) {
|
| 593 |
return TRUE;
|
| 594 |
} |
| 595 |
|
| 596 |
break;
|
| 597 |
} |
| 598 |
} while (TRUE);
|
| 599 |
|
| 600 |
g_return_val_if_reached(TRUE); |
| 601 |
} |
| 602 |
|
| 603 |
/*************************************/
|
| 604 |
/* Initialization and authentication */
|
| 605 |
/*************************************/
|
| 606 |
|
| 607 |
static void nntpconnection_login_username_sent(NNTPConnectionInfo *conn); |
| 608 |
static void nntpconnection_login_password_sent(NNTPConnectionInfo *conn); |
| 609 |
static void nntpconnection_login_set_mode_reader(NNTPConnectionInfo *conn); |
| 610 |
static void nntpconnection_login_process_mode_reader(NNTPConnectionInfo *conn); |
| 611 |
static void nntpconnection_process_body_command(NNTPConnectionInfo *conn); |
| 612 |
static void nntpconnection_process_body_data(NNTPConnectionInfo *conn); |
| 613 |
static void nntpconnection_send_group_command(NNTPConnectionInfo *conn); |
| 614 |
static void nntpconnection_process_group_command(NNTPConnectionInfo *conn); |
| 615 |
static void nntpconnection_send_xover_command(NNTPConnectionInfo *conn); |
| 616 |
static void nntpconnection_process_xover_command(NNTPConnectionInfo *conn); |
| 617 |
static void nntpconnection_process_xover_data(NNTPConnectionInfo *conn); |
| 618 |
|
| 619 |
static void |
| 620 |
nntpconnection_process_welcome_msg(NNTPConnectionInfo *conn) |
| 621 |
{
|
| 622 |
char welcome_msg[4096]; |
| 623 |
|
| 624 |
memset(welcome_msg, 0, sizeof(welcome_msg)); |
| 625 |
|
| 626 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(welcome_msg) - 1, welcome_msg, NULL, NULL)) { |
| 627 |
return;
|
| 628 |
} |
| 629 |
|
| 630 |
strip_newline(welcome_msg); |
| 631 |
|
| 632 |
switch (get_status_code(welcome_msg)) {
|
| 633 |
case 200: |
| 634 |
case 201: |
| 635 |
/* Welcome message is OK */
|
| 636 |
nntpgrab_core_emit_connected(FALSE, conn->server_info.servername, conn->connection_id, welcome_msg); |
| 637 |
break;
|
| 638 |
|
| 639 |
default:
|
| 640 |
/* Welcome message is NOT ok, probably too many connections from this IP address */
|
| 641 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_TOO_MANY_CONNECTIONS, welcome_msg, __FILE__, __LINE__); |
| 642 |
|
| 643 |
return;
|
| 644 |
} |
| 645 |
|
| 646 |
/* Do we need to send a username and password to the server? */
|
| 647 |
if (strlen(conn->server_info.username) > 0) { |
| 648 |
char buf[1024]; |
| 649 |
memset(buf, 0, sizeof(buf)); |
| 650 |
|
| 651 |
snprintf(buf, sizeof(buf) - 1, "AUTHINFO USER %s\r\n", conn->server_info.username); |
| 652 |
if (!nntpconnection_send_msg(conn, buf, strlen(buf))) {
|
| 653 |
return;
|
| 654 |
} |
| 655 |
|
| 656 |
conn->active_method = nntpconnection_login_username_sent; |
| 657 |
} else {
|
| 658 |
/* We don't need to log in. Prepare the connection for further communication */
|
| 659 |
nntpconnection_login_set_mode_reader(conn); |
| 660 |
} |
| 661 |
} |
| 662 |
|
| 663 |
static void |
| 664 |
nntpconnection_login_username_sent(NNTPConnectionInfo *conn) |
| 665 |
{
|
| 666 |
char buf[1024]; |
| 667 |
memset(buf, 0, sizeof(buf)); |
| 668 |
|
| 669 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(buf) - 1, buf, NULL, NULL)) { |
| 670 |
return;
|
| 671 |
} |
| 672 |
|
| 673 |
if (get_status_code(buf) != 381) { |
| 674 |
/* Unexpected response code. Abort the connection */
|
| 675 |
strip_newline(buf); |
| 676 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_LOGIN_FAILURE, buf, __FILE__, __LINE__); |
| 677 |
return;
|
| 678 |
} |
| 679 |
|
| 680 |
if (strlen(conn->server_info.password) > 0) { |
| 681 |
memset(buf, 0, sizeof(buf)); |
| 682 |
snprintf(buf, sizeof(buf) - 1, "AUTHINFO PASS %s\r\n", conn->server_info.password); |
| 683 |
if (!nntpconnection_send_msg(conn, buf, strlen(buf))) {
|
| 684 |
return;
|
| 685 |
} |
| 686 |
|
| 687 |
conn->active_method = nntpconnection_login_password_sent; |
| 688 |
} else {
|
| 689 |
/* No password configured for this server. Try to prepare the connection for further communication */
|
| 690 |
nntpconnection_login_set_mode_reader(conn); |
| 691 |
} |
| 692 |
} |
| 693 |
|
| 694 |
static void |
| 695 |
nntpconnection_login_password_sent(NNTPConnectionInfo *conn) |
| 696 |
{
|
| 697 |
char buf[1024]; |
| 698 |
memset(buf, 0, sizeof(buf)); |
| 699 |
|
| 700 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(buf) - 1, buf, NULL, NULL)) { |
| 701 |
return;
|
| 702 |
} |
| 703 |
|
| 704 |
if (get_status_code(buf) != 281) { |
| 705 |
/* Unexpected response code. Abort the connection */
|
| 706 |
strip_newline(buf); |
| 707 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_LOGIN_FAILURE, buf, __FILE__, __LINE__); |
| 708 |
return;
|
| 709 |
} |
| 710 |
|
| 711 |
/* Login OK, prepare the connection for further communication */
|
| 712 |
nntpconnection_login_set_mode_reader(conn); |
| 713 |
} |
| 714 |
|
| 715 |
static void |
| 716 |
nntpconnection_login_set_mode_reader(NNTPConnectionInfo *conn) |
| 717 |
{
|
| 718 |
if (!nntpconnection_send_msg(conn, "MODE READER\r\n", -1)) { |
| 719 |
return;
|
| 720 |
} |
| 721 |
|
| 722 |
conn->active_method = nntpconnection_login_process_mode_reader; |
| 723 |
} |
| 724 |
|
| 725 |
static void |
| 726 |
nntpconnection_login_process_mode_reader(NNTPConnectionInfo *conn) |
| 727 |
{
|
| 728 |
char buf[1024]; |
| 729 |
memset(buf, 0, sizeof(buf)); |
| 730 |
|
| 731 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(buf) - 1, buf, NULL, NULL)) { |
| 732 |
return;
|
| 733 |
} |
| 734 |
|
| 735 |
switch (get_status_code(buf)) {
|
| 736 |
case 200: |
| 737 |
case 201: |
| 738 |
/* Everything's ready! */
|
| 739 |
break;
|
| 740 |
|
| 741 |
case 480: |
| 742 |
/* Some usenet servers use this to notify there are too many connections active */
|
| 743 |
strip_newline(buf); |
| 744 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_TOO_MANY_CONNECTIONS, buf, __FILE__, __LINE__); |
| 745 |
return;
|
| 746 |
|
| 747 |
default:
|
| 748 |
/* Unexpected response code. Abort the connection */
|
| 749 |
strip_newline(buf); |
| 750 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_INVALID_MSG, buf, __FILE__, __LINE__); |
| 751 |
return;
|
| 752 |
} |
| 753 |
|
| 754 |
/* The connection is now fully operational. Check if we need to download something */
|
| 755 |
if (conn->job_type == NNTP_JOB_TYPE_ARTICLE) {
|
| 756 |
nntpconnection_send_body_command(conn); |
| 757 |
} else if (conn->job_type == NNTP_JOB_TYPE_XOVER) { |
| 758 |
nntpconnection_send_xover_command(conn); |
| 759 |
} else {
|
| 760 |
conn->active_method = NULL;
|
| 761 |
conn->is_idle = TRUE; |
| 762 |
conn->idle_start_stamp = time(NULL);
|
| 763 |
} |
| 764 |
} |
| 765 |
|
| 766 |
/**********************************************************/
|
| 767 |
/* body / article */
|
| 768 |
/**********************************************************/
|
| 769 |
void
|
| 770 |
nntpconnection_send_body_command(NNTPConnectionInfo *conn) |
| 771 |
{
|
| 772 |
char cmd[1024]; |
| 773 |
|
| 774 |
g_return_if_fail(conn != NULL);
|
| 775 |
g_return_if_fail(conn->job_type == NNTP_JOB_TYPE_ARTICLE); |
| 776 |
g_return_if_fail(conn->collection != NULL);
|
| 777 |
g_return_if_fail(conn->file != NULL);
|
| 778 |
g_return_if_fail(conn->part != NULL);
|
| 779 |
g_return_if_fail(conn->article_fd == -1);
|
| 780 |
g_return_if_fail(strlen(conn->article_filename) > 0);
|
| 781 |
|
| 782 |
nntpgrab_core_emit_part_download_start(FALSE, conn->server_info.servername, conn->connection_id, conn->collection->collection_name, conn->file->subject, conn->part->part_num); |
| 783 |
|
| 784 |
memset(cmd, 0, sizeof(cmd)); |
| 785 |
snprintf(cmd, sizeof(cmd) - 1, "BODY %s\r\n", conn->part->message_id); |
| 786 |
if (!nntpconnection_send_msg(conn, cmd, strlen(cmd))) {
|
| 787 |
return;
|
| 788 |
} |
| 789 |
|
| 790 |
conn->active_method = nntpconnection_process_body_command; |
| 791 |
conn->article_bytes_downloaded = 0;
|
| 792 |
conn->article_write_buffer_length = 0;
|
| 793 |
} |
| 794 |
|
| 795 |
static void |
| 796 |
nntpconnection_process_body_command(NNTPConnectionInfo *conn) |
| 797 |
{
|
| 798 |
gboolean more_data_ready = FALSE; |
| 799 |
char buf[1024]; |
| 800 |
memset(buf, 0, sizeof(buf)); |
| 801 |
|
| 802 |
g_return_if_fail(conn != NULL);
|
| 803 |
g_return_if_fail(conn->job_type == NNTP_JOB_TYPE_ARTICLE); |
| 804 |
g_return_if_fail(conn->collection != NULL);
|
| 805 |
g_return_if_fail(conn->file != NULL);
|
| 806 |
g_return_if_fail(conn->part != NULL);
|
| 807 |
g_return_if_fail(conn->article_fd == -1);
|
| 808 |
g_return_if_fail(strlen(conn->article_filename) > 0);
|
| 809 |
|
| 810 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(buf) - 1, buf, NULL, &more_data_ready)) { |
| 811 |
return;
|
| 812 |
} |
| 813 |
|
| 814 |
switch (get_status_code(buf)) {
|
| 815 |
case 222: /* article retrieved - body follows */ |
| 816 |
/* Open the file where we need to save our data to */
|
| 817 |
conn->article_fd = open(conn->article_filename, O_CREAT | O_WRONLY | O_TRUNC | O_BINARY, S_IRUSR | S_IWUSR); |
| 818 |
if (conn->article_fd == -1) { |
| 819 |
download_thread_abort_without_waiting(_("Unable to create a file named '%s': %s"), conn->article_filename, strerror(errno));
|
| 820 |
conn->active_method = NULL;
|
| 821 |
return;
|
| 822 |
} |
| 823 |
|
| 824 |
conn->active_method = nntpconnection_process_body_data; |
| 825 |
|
| 826 |
if (more_data_ready) {
|
| 827 |
conn->active_method(conn); |
| 828 |
} |
| 829 |
|
| 830 |
return;
|
| 831 |
|
| 832 |
case 430: /* no such article found */ |
| 833 |
download_queue_update_part_status(conn, conn->collection, conn->file, conn->part, conn->server_id, FALSE, FALSE, TRUE); |
| 834 |
|
| 835 |
collection_unref(conn->collection); |
| 836 |
file_unref(conn->file); |
| 837 |
conn->collection = NULL;
|
| 838 |
conn->file = NULL;
|
| 839 |
conn->part = NULL;
|
| 840 |
conn->job_type = NNTP_JOB_TYPE_NONE; |
| 841 |
|
| 842 |
conn->active_method = NULL;
|
| 843 |
conn->is_idle = TRUE; |
| 844 |
conn->idle_start_stamp = time(NULL);
|
| 845 |
|
| 846 |
return;
|
| 847 |
|
| 848 |
case 220: /* article retrieved - head and body follow */ |
| 849 |
case 221: /* article retrieved - head follows */ |
| 850 |
case 223: /* article retrieved - request text separately */ |
| 851 |
case 412: /* no newsgroup has been selected */ |
| 852 |
case 420: /* no current article has been selected */ |
| 853 |
case 423: /* no such article number in this group */ |
| 854 |
default:
|
| 855 |
/* Unexpected response code. Abort the connection */
|
| 856 |
strip_newline(buf); |
| 857 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_INVALID_MSG, buf, __FILE__, __LINE__); |
| 858 |
return;
|
| 859 |
} |
| 860 |
} |
| 861 |
|
| 862 |
static void |
| 863 |
trim_double_dots(NNTPConnectionInfo *conn, char *buf, int *length) |
| 864 |
{
|
| 865 |
g_return_if_fail(conn != NULL);
|
| 866 |
g_return_if_fail(buf != NULL);
|
| 867 |
g_return_if_fail(length != NULL);
|
| 868 |
g_return_if_fail(*length > 0);
|
| 869 |
|
| 870 |
if (*length >= 2 && buf[0] == '.' && buf[1] == '.') { |
| 871 |
memmove(buf, buf + 1, *length - 1); |
| 872 |
buf[*length - 1] = '\0'; |
| 873 |
(*length)--; |
| 874 |
} |
| 875 |
} |
| 876 |
|
| 877 |
static void |
| 878 |
nntpconnection_process_body_data(NNTPConnectionInfo *conn) |
| 879 |
{
|
| 880 |
int length = 0; |
| 881 |
char buf[65536]; |
| 882 |
gboolean more_data_ready = TRUE; |
| 883 |
struct timeval tv;
|
| 884 |
struct timeval tv_diff;
|
| 885 |
|
| 886 |
g_return_if_fail(conn != NULL);
|
| 887 |
g_return_if_fail(conn->job_type == NNTP_JOB_TYPE_ARTICLE); |
| 888 |
g_return_if_fail(conn->part != NULL);
|
| 889 |
g_return_if_fail(conn->article_fd >= 0);
|
| 890 |
|
| 891 |
while (more_data_ready) {
|
| 892 |
memset(buf, 0, sizeof(buf)); |
| 893 |
|
| 894 |
/* Keep on reading data until we've found the '\n.\r\n' or '\n.\n' sequence */
|
| 895 |
|
| 896 |
if (!nntpconnection_read_msg(conn, FALSE, sizeof(buf) - 1, buf, &length, &more_data_ready)) { |
| 897 |
return;
|
| 898 |
} |
| 899 |
|
| 900 |
g_return_if_fail(length > 0);
|
| 901 |
|
| 902 |
conn->article_bytes_downloaded += length; |
| 903 |
if (conn->article_bytes_downloaded > conn->part->size) {
|
| 904 |
conn->article_bytes_downloaded = conn->part->size; |
| 905 |
} |
| 906 |
|
| 907 |
gettimeofday(&tv, NULL);
|
| 908 |
timersub(&tv, &conn->last_article_progress_announce, &tv_diff); |
| 909 |
if (tv_diff.tv_sec > 0 || tv_diff.tv_usec > G_USEC_PER_SEC / 10) { |
| 910 |
conn->last_article_progress_announce = tv; |
| 911 |
nntpgrab_core_emit_part_progress_update(FALSE, conn->server_info.servername, conn->connection_id, conn->collection->collection_name, conn->file->subject, conn->part->part_num, conn->article_bytes_downloaded, conn->part->size); |
| 912 |
} |
| 913 |
|
| 914 |
/* Check for the end sequence */
|
| 915 |
if ((length == 3 && !strncmp(buf, ".\r\n", 3)) || |
| 916 |
(length == 2 && !strncmp(buf, ".\n", 2))) { |
| 917 |
|
| 918 |
/* End sequence found! */
|
| 919 |
|
| 920 |
/* Flush the buffers and close the file descriptor */
|
| 921 |
if ((conn->article_write_buffer_length > 0 && write(conn->article_fd, conn->article_write_buffer, conn->article_write_buffer_length) != conn->article_write_buffer_length)) { |
| 922 |
/* Write error! Kill the download thread */
|
| 923 |
download_thread_abort_without_waiting(_("%s:%i Unable to write article data to file: %s"), __FILE__, __LINE__, strerror(errno));
|
| 924 |
|
| 925 |
/* Mark the part as failed so it will be retried later */
|
| 926 |
ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "Part %i of file '%s' from collection '%s' was completed successfully, but the writing to disk failed", conn->part->part_num, conn->collection->collection_name, conn->file->subject); |
| 927 |
download_queue_update_part_status(conn, conn->collection, conn->file, conn->part, conn->server_id, FALSE, FALSE, FALSE); |
| 928 |
} else {
|
| 929 |
/* Download and save succeeded */
|
| 930 |
download_queue_update_part_status(conn, conn->collection, conn->file, conn->part, conn->server_id, TRUE, FALSE, TRUE); |
| 931 |
ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_DEBUG, "Part %i of file '%s' from collection '%s' was downloaded successfully", conn->part->part_num, conn->collection->collection_name, conn->file->subject); |
| 932 |
} |
| 933 |
|
| 934 |
close(conn->article_fd); |
| 935 |
conn->article_fd = -1;
|
| 936 |
|
| 937 |
conn->article_bytes_downloaded = 0;
|
| 938 |
conn->article_write_buffer_length = 0;
|
| 939 |
|
| 940 |
memset(conn->article_write_buffer, 0, sizeof(conn->article_write_buffer)); |
| 941 |
|
| 942 |
collection_unref(conn->collection); |
| 943 |
file_unref(conn->file); |
| 944 |
conn->collection = NULL;
|
| 945 |
conn->file = NULL;
|
| 946 |
conn->part = NULL;
|
| 947 |
conn->job_type = NNTP_JOB_TYPE_NONE; |
| 948 |
conn->active_method = NULL;
|
| 949 |
conn->is_idle = TRUE; |
| 950 |
|
| 951 |
conn->idle_start_stamp = time(NULL);
|
| 952 |
|
| 953 |
return;
|
| 954 |
} |
| 955 |
|
| 956 |
/* Un-escape any double-dots */
|
| 957 |
trim_double_dots(conn, buf, &length); |
| 958 |
|
| 959 |
/* Keep the data in a temporary buffer to minimize the amount of I/O */
|
| 960 |
if (conn->article_write_buffer_length + length > sizeof(conn->article_write_buffer)) { |
| 961 |
/* Flush the buffer */
|
| 962 |
int pos = 0; |
| 963 |
|
| 964 |
do {
|
| 965 |
int retval = write(conn->article_fd, conn->article_write_buffer + pos, conn->article_write_buffer_length - pos);
|
| 966 |
if (retval == -1 || retval == 0) { |
| 967 |
/* Write error! Kill the download thread */
|
| 968 |
char msg[1024]; |
| 969 |
|
| 970 |
snprintf(msg, sizeof(msg) - 1, _("%s:%i Unable to write article data to file: %s"), __FILE__, __LINE__, strerror(errno)); |
| 971 |
download_thread_abort_without_waiting("%s", msg);
|
| 972 |
|
| 973 |
/* Mark the part as failed so it will be retried later */
|
| 974 |
download_queue_update_part_status(conn, conn->collection, conn->file, conn->part, conn->server_id, FALSE, FALSE, FALSE); |
| 975 |
|
| 976 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_WRITE_ERROR, msg, __FILE__, __LINE__); |
| 977 |
|
| 978 |
return;
|
| 979 |
} else {
|
| 980 |
pos += retval; |
| 981 |
} |
| 982 |
} while (pos != conn->article_write_buffer_length);
|
| 983 |
|
| 984 |
memset(conn->article_write_buffer, 0, sizeof(conn->article_write_buffer)); |
| 985 |
conn->article_write_buffer_length = 0;
|
| 986 |
} |
| 987 |
|
| 988 |
memcpy(conn->article_write_buffer + conn->article_write_buffer_length, buf, length); |
| 989 |
conn->article_write_buffer_length += length; |
| 990 |
} |
| 991 |
} |
| 992 |
|
| 993 |
/**************************************************************
|
| 994 |
* group / xover |
| 995 |
**************************************************************/ |
| 996 |
void
|
| 997 |
nntpconnection_send_group_command(NNTPConnectionInfo *conn) |
| 998 |
{
|
| 999 |
char cmd[1024]; |
| 1000 |
|
| 1001 |
g_return_if_fail(conn != NULL);
|
| 1002 |
g_return_if_fail(conn->job_type == NNTP_JOB_TYPE_XOVER); |
| 1003 |
g_return_if_fail(strlen(conn->newsgroup) > 0);
|
| 1004 |
|
| 1005 |
memset(cmd, 0, sizeof(cmd)); |
| 1006 |
snprintf(cmd, sizeof(cmd) - 1, "GROUP %s\r\n", conn->newsgroup); |
| 1007 |
if (!nntpconnection_send_msg(conn, cmd, strlen(cmd))) {
|
| 1008 |
return;
|
| 1009 |
} |
| 1010 |
|
| 1011 |
conn->active_method = nntpconnection_process_group_command; |
| 1012 |
} |
| 1013 |
|
| 1014 |
static void |
| 1015 |
nntpconnection_process_group_command(NNTPConnectionInfo *conn) |
| 1016 |
{
|
| 1017 |
gboolean more_data_ready = FALSE; |
| 1018 |
char buf[1024]; |
| 1019 |
memset(buf, 0, sizeof(buf)); |
| 1020 |
|
| 1021 |
g_return_if_fail(conn != NULL);
|
| 1022 |
g_return_if_fail(conn->job_type == NNTP_JOB_TYPE_XOVER); |
| 1023 |
|
| 1024 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(buf) - 1, buf, NULL, &more_data_ready)) { |
| 1025 |
return;
|
| 1026 |
} |
| 1027 |
|
| 1028 |
switch (get_status_code(buf)) {
|
| 1029 |
case 211: |
| 1030 |
/* 211 n f l s group selected
|
| 1031 |
(n = estimated number of articles in group, |
| 1032 |
f = first article number in the group, |
| 1033 |
l = last article number in the group, |
| 1034 |
s = name of the group.) |
| 1035 |
*/ |
| 1036 |
|
| 1037 |
nntpconnection_send_xover_command(conn); |
| 1038 |
return;
|
| 1039 |
|
| 1040 |
case 411: /* No such group */ |
| 1041 |
strip_newline(buf); |
| 1042 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_NORMAL, buf, __FILE__, __LINE__); |
| 1043 |
return;
|
| 1044 |
|
| 1045 |
default:
|
| 1046 |
/* Unexpected response code. Abort the connection */
|
| 1047 |
strip_newline(buf); |
| 1048 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_INVALID_MSG, buf, __FILE__, __LINE__); |
| 1049 |
return;
|
| 1050 |
} |
| 1051 |
} |
| 1052 |
|
| 1053 |
void
|
| 1054 |
nntpconnection_send_xover_command(NNTPConnectionInfo *conn) |
| 1055 |
{
|
| 1056 |
char cmd[1024]; |
| 1057 |
|
| 1058 |
g_return_if_fail(conn != NULL);
|
| 1059 |
g_return_if_fail(conn->job_type == NNTP_JOB_TYPE_XOVER); |
| 1060 |
g_return_if_fail(strlen(conn->newsgroup) > 0);
|
| 1061 |
g_return_if_fail(conn->xover_start_range >= -1);
|
| 1062 |
g_return_if_fail(conn->xover_end_range >= -1);
|
| 1063 |
|
| 1064 |
// nntpgrab_core_emit_part_download_start(FALSE, conn->server_info.servername, conn->connection_id, conn->collection->collection_name, conn->file->subject, conn->part->part_num);
|
| 1065 |
|
| 1066 |
memset(cmd, 0, sizeof(cmd)); |
| 1067 |
if (conn->xover_end_range == -1) { |
| 1068 |
snprintf(cmd, sizeof(cmd) - 1, "XOVER %"G_GINT64_FORMAT"-\r\n", conn->xover_start_range); |
| 1069 |
} else {
|
| 1070 |
snprintf(cmd, sizeof(cmd) - 1, "XOVER %"G_GINT64_FORMAT"-%"G_GINT64_FORMAT"\r\n", conn->xover_start_range, conn->xover_end_range); |
| 1071 |
} |
| 1072 |
|
| 1073 |
if (!nntpconnection_send_msg(conn, cmd, strlen(cmd))) {
|
| 1074 |
return;
|
| 1075 |
} |
| 1076 |
|
| 1077 |
conn->active_method = nntpconnection_process_xover_command; |
| 1078 |
} |
| 1079 |
|
| 1080 |
static void |
| 1081 |
nntpconnection_process_xover_command(NNTPConnectionInfo *conn) |
| 1082 |
{
|
| 1083 |
gboolean more_data_ready = FALSE; |
| 1084 |
char buf[1024]; |
| 1085 |
memset(buf, 0, sizeof(buf)); |
| 1086 |
|
| 1087 |
g_return_if_fail(conn != NULL);
|
| 1088 |
g_return_if_fail(conn->job_type == NNTP_JOB_TYPE_XOVER); |
| 1089 |
|
| 1090 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(buf) - 1, buf, NULL, &more_data_ready)) { |
| 1091 |
return;
|
| 1092 |
} |
| 1093 |
|
| 1094 |
switch (get_status_code(buf)) {
|
| 1095 |
case 224: /* Overview information follows */ |
| 1096 |
conn->active_method = nntpconnection_process_xover_data; |
| 1097 |
|
| 1098 |
if (more_data_ready) {
|
| 1099 |
conn->active_method(conn); |
| 1100 |
} |
| 1101 |
|
| 1102 |
return;
|
| 1103 |
|
| 1104 |
default:
|
| 1105 |
/* Unexpected response code. Abort the connection */
|
| 1106 |
strip_newline(buf); |
| 1107 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_INVALID_MSG, buf, __FILE__, __LINE__); |
| 1108 |
return;
|
| 1109 |
} |
| 1110 |
} |
| 1111 |
|
| 1112 |
static void |
| 1113 |
nntpconnection_process_xover_data(NNTPConnectionInfo *conn) |
| 1114 |
{
|
| 1115 |
char buf[1024]; |
| 1116 |
int length = 0; |
| 1117 |
gboolean more_data_ready = FALSE; |
| 1118 |
char **parts;
|
| 1119 |
struct tm tm;
|
| 1120 |
time_t post_date; |
| 1121 |
|
| 1122 |
g_return_if_fail(conn != NULL);
|
| 1123 |
g_return_if_fail(conn->job_type == NNTP_JOB_TYPE_ARTICLE); |
| 1124 |
g_return_if_fail(conn->part != NULL);
|
| 1125 |
g_return_if_fail(conn->article_fd >= 0);
|
| 1126 |
|
| 1127 |
memset(buf, 0, sizeof(buf)); |
| 1128 |
|
| 1129 |
/* Keep on reading data until we've found the '\r\n.\r\n' or '\n.\n' sequence */
|
| 1130 |
|
| 1131 |
if (!nntpconnection_read_msg(conn, TRUE , sizeof(buf) - 1, buf, &length, &more_data_ready)) { |
| 1132 |
return;
|
| 1133 |
} |
| 1134 |
|
| 1135 |
g_return_if_fail(length > 0);
|
| 1136 |
|
| 1137 |
/* Are we at the end? */
|
| 1138 |
if (buf[0] == '.' && buf[1] == '\0') { |
| 1139 |
conn->job_type = NNTP_JOB_TYPE_NONE; |
| 1140 |
memset(&conn->newsgroup, 0, sizeof(conn->newsgroup)); |
| 1141 |
conn->active_method = NULL;
|
| 1142 |
|
| 1143 |
return;
|
| 1144 |
} |
| 1145 |
|
| 1146 |
parts = g_strsplit(buf, "\t", 0); |
| 1147 |
|
| 1148 |
/* Sanity check */
|
| 1149 |
if (!parts || !parts[0] || !parts[1] || !parts[2] || !parts[3] || |
| 1150 |
!parts[4] || !parts[5] || !parts[6] || !parts[7]) { |
| 1151 |
|
| 1152 |
goto out;
|
| 1153 |
} |
| 1154 |
|
| 1155 |
memset(&tm, 0, sizeof(tm)); |
| 1156 |
if (strptime(parts[3], "%d %b %Y %H:%M:%S %Z", &tm)) { |
| 1157 |
post_date = mktime(&tm); |
| 1158 |
} else {
|
| 1159 |
memset(&tm, 0, sizeof(tm)); |
| 1160 |
if (strptime(parts[3], "%A, %d %b %Y %H:%M:%S %Z", &tm)) { |
| 1161 |
post_date = mktime(&tm); |
| 1162 |
} else {
|
| 1163 |
// Date could not be parsed
|
| 1164 |
post_date = 0;
|
| 1165 |
|
| 1166 |
goto out;
|
| 1167 |
} |
| 1168 |
} |
| 1169 |
|
| 1170 |
//imported_funcs.parse_header(atoi(parts[0]), parts[1], parts[2], post_date, parts[4], atoi(parts[6]), atoi(parts[7]), conn->xover_start_range, conn->xover_end_range, data);
|
| 1171 |
|
| 1172 |
out:
|
| 1173 |
g_strfreev(parts); |
| 1174 |
|
| 1175 |
/* Process more data if it's available */
|
| 1176 |
if (more_data_ready) {
|
| 1177 |
conn->active_method(conn); |
| 1178 |
} |
| 1179 |
|
| 1180 |
return;
|
| 1181 |
} |
| 1182 |
|
| 1183 |
/*****************************/
|
| 1184 |
/* generic socket operations */
|
| 1185 |
/*****************************/
|
| 1186 |
#ifdef HAVE_SSL
|
| 1187 |
|
| 1188 |
#ifdef HAVE_GNUTLS
|
| 1189 |
static ssize_t pull_func (gnutls_transport_ptr_t fd, void *buf, size_t len) |
| 1190 |
{
|
| 1191 |
ssize_t retval = recv(GPOINTER_TO_INT(fd), buf, len, MSG_DONTWAIT); |
| 1192 |
update_traffic_monitor(retval); |
| 1193 |
return retval;
|
| 1194 |
} |
| 1195 |
|
| 1196 |
#define GNUTLS_CHECK_VERSION(major,minor,micro) \
|
| 1197 |
(GNUTLS_VERSION_MAJOR > (major) || \ |
| 1198 |
(GNUTLS_VERSION_MAJOR == (major) && GNUTLS_VERSION_MINOR > (minor)) || \ |
| 1199 |
(GNUTLS_VERSION_MAJOR == (major) && GNUTLS_VERSION_MINOR == (minor) && \ |
| 1200 |
GNUTLS_VERSION_MICRO >= (micro))) |
| 1201 |
|
| 1202 |
static gboolean
|
| 1203 |
prepare_gnutls_connection(NNTPConnectionInfo *conn, char **errmsg)
|
| 1204 |
{
|
| 1205 |
static GStaticMutex mutex;
|
| 1206 |
static gboolean been_here = FALSE;
|
| 1207 |
gnutls_certificate_credentials_t cred; |
| 1208 |
int ret;
|
| 1209 |
|
| 1210 |
g_static_mutex_lock(&mutex); |
| 1211 |
if (!been_here) {
|
| 1212 |
gnutls_global_init(); |
| 1213 |
been_here = TRUE; |
| 1214 |
} |
| 1215 |
g_static_mutex_unlock(&mutex); |
| 1216 |
|
| 1217 |
/* Initialize TLS session */
|
| 1218 |
gnutls_init (&conn->ssl_session, GNUTLS_CLIENT); |
| 1219 |
|
| 1220 |
/* Use default priorities */
|
| 1221 |
#if GNUTLS_CHECK_VERSION(2,1,7) |
| 1222 |
gnutls_priority_set_direct (conn->ssl_session, "PERFORMANCE:+ANON-DH:!ARCFOUR-128", NULL); |
| 1223 |
#endif
|
| 1224 |
|
| 1225 |
/* put the anonymous credentials to the current session */
|
| 1226 |
gnutls_certificate_allocate_credentials(&cred); |
| 1227 |
gnutls_credentials_set(conn->ssl_session, GNUTLS_CRD_CERTIFICATE, cred); |
| 1228 |
|
| 1229 |
gnutls_transport_set_ptr (conn->ssl_session, (gnutls_transport_ptr_t) GINT_TO_POINTER(conn->poll_fd.fd)); |
| 1230 |
|
| 1231 |
/* Perform the TLS handshake */
|
| 1232 |
do {
|
| 1233 |
ret = gnutls_handshake (conn->ssl_session); |
| 1234 |
} while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
|
| 1235 |
|
| 1236 |
if (ret < 0) { |
| 1237 |
if (errmsg) {
|
| 1238 |
*errmsg = g_strdup_printf("Handshake failed: %s", gnutls_strerror(ret));
|
| 1239 |
} |
| 1240 |
return FALSE;
|
| 1241 |
} |
| 1242 |
|
| 1243 |
/* Override the read function so that we can monitor the traffic on socket level */
|
| 1244 |
gnutls_transport_set_pull_function(conn->ssl_session, pull_func); |
| 1245 |
//gnutls_transport_set_ptr2 (conn->ssl_session, (gnutls_transport_ptr_t) pull_func, (gnutls_transport_ptr_t) push_func);
|
| 1246 |
|
| 1247 |
return TRUE;
|
| 1248 |
} |
| 1249 |
#else
|
| 1250 |
static SSL *
|
| 1251 |
prepare_ssl_connection(int conn_id, char **errmsg) |
| 1252 |
{
|
| 1253 |
SSL_CTX *ctx; |
| 1254 |
SSL *ssl; |
| 1255 |
SSL_METHOD *meth; |
| 1256 |
int err;
|
| 1257 |
#if 0
|
| 1258 |
char *str; |
| 1259 |
X509 *server_cert; |
| 1260 |
#endif |
| 1261 |
static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
|
| 1262 |
|
| 1263 |
g_static_mutex_lock(&mutex); |
| 1264 |
|
| 1265 |
SSLeay_add_ssl_algorithms(); |
| 1266 |
meth = SSLv23_client_method(); |
| 1267 |
SSL_load_error_strings(); |
| 1268 |
g_static_mutex_unlock(&mutex); |
| 1269 |
|
| 1270 |
ctx = SSL_CTX_new (meth); |
| 1271 |
if (!ctx) {
|
| 1272 |
if (errmsg) {
|
| 1273 |
*errmsg = g_strdup("SSL_CTX_new FAILED");
|
| 1274 |
} |
| 1275 |
|
| 1276 |
return NULL; |
| 1277 |
} |
| 1278 |
|
| 1279 |
/* Don't verify the certificate as several usenet providers (like Eweka) use self-signed certificates */
|
| 1280 |
SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, NULL);
|
| 1281 |
|
| 1282 |
ssl = SSL_new (ctx); |
| 1283 |
SSL_CTX_free(ctx); |
| 1284 |
|
| 1285 |
if (!ssl) {
|
| 1286 |
if (errmsg) {
|
| 1287 |
*errmsg = g_strdup("SSL_new FAILED");
|
| 1288 |
} |
| 1289 |
|
| 1290 |
return NULL; |
| 1291 |
} |
| 1292 |
|
| 1293 |
SSL_set_fd (ssl, conn_id); |
| 1294 |
err = SSL_connect (ssl); |
| 1295 |
if (err <= 0) { |
| 1296 |
if (errmsg) {
|
| 1297 |
*errmsg = g_strdup_printf("%s", ERR_error_string(ERR_get_error(), NULL)); |
| 1298 |
} |
| 1299 |
|
| 1300 |
return NULL; |
| 1301 |
} |
| 1302 |
|
| 1303 |
#if 0
|
| 1304 |
printf ("SSL connection using %s\n", SSL_get_cipher (ssl));
|
| 1305 |
server_cert = SSL_get_peer_certificate (ssl); |
| 1306 |
if (server_cert) {
|
| 1307 |
printf ("Server certificate:\n");
|
| 1308 |
|
| 1309 |
str = X509_NAME_oneline (X509_get_subject_name (server_cert),0,0); |
| 1310 |
if (str) {
|
| 1311 |
printf ("\t subject: %s\n", str);
|
| 1312 |
OPENSSL_free (str); |
| 1313 |
} |
| 1314 |
|
| 1315 |
str = X509_NAME_oneline (X509_get_issuer_name (server_cert),0,0); |
| 1316 |
if (str) {
|
| 1317 |
printf ("\t issuer: %s\n", str);
|
| 1318 |
OPENSSL_free (str); |
| 1319 |
} |
| 1320 |
|
| 1321 |
/* We could do all sorts of certificate verification stuff here before deallocating the certificate. */ |
| 1322 |
|
| 1323 |
X509_free (server_cert); |
| 1324 |
} |
| 1325 |
#endif |
| 1326 |
|
| 1327 |
return ssl;
|
| 1328 |
} |
| 1329 |
#endif
|
| 1330 |
#endif
|
| 1331 |
|
| 1332 |
/********************/
|
| 1333 |
/* proxy operations */
|
| 1334 |
/********************/
|
| 1335 |
static void |
| 1336 |
nntpconnection_process_proxy_connect_command(NNTPConnectionInfo *conn) |
| 1337 |
{
|
| 1338 |
char buf[128]; |
| 1339 |
int length = 0; |
| 1340 |
char *ptr;
|
| 1341 |
|
| 1342 |
g_return_if_fail(conn != NULL);
|
| 1343 |
|
| 1344 |
memset(buf, 0, sizeof(buf)); |
| 1345 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(buf) - 1, buf, &length, NULL)) { |
| 1346 |
return;
|
| 1347 |
} |
| 1348 |
|
| 1349 |
/* buf should now contain something like 'HTTP/1.0 200 Connection established' */
|
| 1350 |
ptr = strstr(buf, " ");
|
| 1351 |
if (get_status_code(ptr + 1) != 200) { |
| 1352 |
/* Unknown response code, disconnect */
|
| 1353 |
strip_newline(buf); |
| 1354 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_INVALID_MSG, buf, __FILE__, __LINE__); |
| 1355 |
return;
|
| 1356 |
} |
| 1357 |
|
| 1358 |
/* Keep on reading until we've found a blank line */
|
| 1359 |
do {
|
| 1360 |
memset(&buf, 0, sizeof(buf)); |
| 1361 |
if (!nntpconnection_read_msg(conn, TRUE, sizeof(buf) - 1, buf, &length, NULL)) { |
| 1362 |
return;
|
| 1363 |
} |
| 1364 |
|
| 1365 |
strip_newline(buf); |
| 1366 |
} while (strlen(buf) > 0); |
| 1367 |
|
| 1368 |
/* From now on we can talk the regular NNTP protocol */
|
| 1369 |
conn->active_method = nntpconnection_process_welcome_msg; |
| 1370 |
|
| 1371 |
#ifdef HAVE_SSL
|
| 1372 |
/* Prepare the SSL connection if necessary */
|
| 1373 |
if (conn->server_info.use_ssl) {
|
| 1374 |
char *errmsg = NULL; |
| 1375 |
|
| 1376 |
#ifdef HAVE_GNUTLS
|
| 1377 |
if (!prepare_gnutls_connection(conn, &errmsg)) {
|
| 1378 |
#else
|
| 1379 |
if ((conn->ssl = prepare_ssl_connection(conn->poll_fd.fd, &errmsg)) == NULL) { |
| 1380 |
#endif
|
| 1381 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_ERROR_SSL_INITIALISE, errmsg, __FILE__, __LINE__); |
| 1382 |
g_free(errmsg); |
| 1383 |
return;
|
| 1384 |
} |
| 1385 |
} |
| 1386 |
#endif
|
| 1387 |
} |
| 1388 |
|
| 1389 |
struct _dns_cache_entry {
|
| 1390 |
char hostname[128]; |
| 1391 |
int port;
|
| 1392 |
struct addrinfo *res;
|
| 1393 |
int n;
|
| 1394 |
}; |
| 1395 |
|
| 1396 |
static int |
| 1397 |
resolve_domain_name(const char *hostname, int port, struct addrinfo **res) |
| 1398 |
{
|
| 1399 |
static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
|
| 1400 |
static GList *cache = NULL; |
| 1401 |
GList *list; |
| 1402 |
struct addrinfo hints;
|
| 1403 |
int n = 0; |
| 1404 |
char str_port[16]; |
| 1405 |
struct _dns_cache_entry *entry;
|
| 1406 |
|
| 1407 |
g_return_val_if_fail(hostname != NULL, EAI_FAIL);
|
| 1408 |
g_return_val_if_fail(port > 0, EAI_FAIL);
|
| 1409 |
g_return_val_if_fail(port <= 65535, EAI_FAIL);
|
| 1410 |
g_return_val_if_fail(res != NULL, EAI_FAIL);
|
| 1411 |
|
| 1412 |
*res = NULL;
|
| 1413 |
|
| 1414 |
/* Search the DNS cache for a match first */
|
| 1415 |
g_static_mutex_lock(&mutex); |
| 1416 |
list = cache; |
| 1417 |
while (list) {
|
| 1418 |
entry = list->data; |
| 1419 |
|
| 1420 |
if (!strcmp(entry->hostname, hostname) && entry->port == port) {
|
| 1421 |
*res = entry->res; |
| 1422 |
n = entry->n; |
| 1423 |
|
| 1424 |
g_static_mutex_unlock(&mutex); |
| 1425 |
|
| 1426 |
return n;
|
| 1427 |
} |
| 1428 |
|
| 1429 |
list = g_list_next(list); |
| 1430 |
} |
| 1431 |
|
| 1432 |
/* DNS entry wasn't found in the cache yet. Perform a DNS resolve */
|
| 1433 |
entry = g_slice_new0(struct _dns_cache_entry);
|
| 1434 |
strncpy(entry->hostname, hostname, sizeof(entry->hostname) -1); |
| 1435 |
entry->port = port; |
| 1436 |
cache = g_list_append(cache, entry); |
| 1437 |
|
| 1438 |
memset(&hints, 0, sizeof(struct addrinfo)); |
| 1439 |
|
| 1440 |
hints.ai_family = AF_UNSPEC; |
| 1441 |
hints.ai_socktype = SOCK_STREAM; |
| 1442 |
|
| 1443 |
memset(&str_port, 0, sizeof(str_port)); |
| 1444 |
snprintf(str_port, sizeof(str_port) - 1, "%i", port); |
| 1445 |
entry->n = getaddrinfo(hostname, str_port, &hints, &entry->res); |
| 1446 |
|
| 1447 |
*res = entry->res; |
| 1448 |
n = entry->n; |
| 1449 |
|
| 1450 |
g_static_mutex_unlock(&mutex); |
| 1451 |
|
| 1452 |
return n;
|
| 1453 |
} |
| 1454 |
|
| 1455 |
NNTPConnectionErrCode |
| 1456 |
nntpconnection_connect_to_server(NNTPConnectionInfo *conn, char **errmsg)
|
| 1457 |
{
|
| 1458 |
static gboolean traffic_monitor_started = FALSE;
|
| 1459 |
static GStaticMutex mutex = G_STATIC_MUTEX_INIT;
|
| 1460 |
struct addrinfo *res = NULL; |
| 1461 |
int n;
|
| 1462 |
int last_errno;
|
| 1463 |
#ifdef WIN32
|
| 1464 |
int tv;
|
| 1465 |
u_long ioctlArg; |
| 1466 |
#else
|
| 1467 |
struct timeval tv;
|
| 1468 |
int mode;
|
| 1469 |
#endif
|
| 1470 |
NNTPDisconnectType disconnect_type; |
| 1471 |
char *proxy_host = NULL; |
| 1472 |
int proxy_port = 0; |
| 1473 |
|
| 1474 |
g_return_val_if_fail(conn != NULL, NNTP_CONNECTION_ERROR_INVALID_ARGUMENT);
|
| 1475 |
g_return_val_if_fail(conn->poll_fd.fd == -1, NNTP_CONNECTION_ERROR_INVALID_ARGUMENT);
|
| 1476 |
g_return_val_if_fail(strlen(conn->server_info.hostname) > 0, NNTP_CONNECTION_ERROR_INVALID_ARGUMENT);
|
| 1477 |
g_return_val_if_fail(conn->server_info.port > 0, NNTP_CONNECTION_ERROR_INVALID_ARGUMENT);
|
| 1478 |
|
| 1479 |
g_static_mutex_lock(&mutex); |
| 1480 |
if (!traffic_monitor_started) {
|
| 1481 |
traffic_monitor_started = TRUE; |
| 1482 |
g_atomic_int_set(&bytes_received_in_last_sec, 0);
|
| 1483 |
|
| 1484 |
/* TODO: implement a nice clean up */
|
| 1485 |
abort_traffic_thread = FALSE; |
| 1486 |
/*traffic_thread = */g_thread_create(traffic_thread_func, NULL, TRUE, NULL); |
| 1487 |
} |
| 1488 |
g_static_mutex_unlock(&mutex); |
| 1489 |
|
| 1490 |
conn->is_idle = FALSE; |
| 1491 |
conn->last_disconnect_stamp = time(NULL); /* Assume that the connection attempt has failed by default */ |
| 1492 |
|
| 1493 |
get_proxy_settings(conn->server_info.hostname, &proxy_host, &proxy_port); |
| 1494 |
|
| 1495 |
if (proxy_host) {
|
| 1496 |
n = resolve_domain_name(proxy_host, proxy_port, &res); |
| 1497 |
} else {
|
| 1498 |
n = resolve_domain_name(conn->server_info.hostname, conn->server_info.port, &res); |
| 1499 |
} |
| 1500 |
|
| 1501 |
if (n != 0) { |
| 1502 |
if (errmsg) {
|
| 1503 |
*errmsg = g_strdup(gai_strerror(n)); |
| 1504 |
} |
| 1505 |
return NNTP_CONNECTION_ERROR_HOST_NOT_FOUND;
|
| 1506 |
} |
| 1507 |
|
| 1508 |
last_errno = 0;
|
| 1509 |
|
| 1510 |
while (res) {
|
| 1511 |
int ret;
|
| 1512 |
|
| 1513 |
conn->poll_fd.fd = socket(res->ai_family, res->ai_socktype, res->ai_protocol); |
| 1514 |
|
| 1515 |
#ifdef WIN32
|
| 1516 |
if ((conn->poll_fd.fd == INVALID_SOCKET)) {
|
| 1517 |
#else
|
| 1518 |
if ((conn->poll_fd.fd == -1)) { |
| 1519 |
#endif
|
| 1520 |
// The socket couldn't be created
|
| 1521 |
// Save the errno and try the next item in the list
|
| 1522 |
#ifdef WIN32
|
| 1523 |
last_errno = WSAGetLastError(); |
| 1524 |
#else
|
| 1525 |
last_errno = errno; |
| 1526 |
#endif
|
| 1527 |
res = res->ai_next; |
| 1528 |
conn->poll_fd.fd = -1;
|
| 1529 |
|
| 1530 |
if (errmsg) {
|
| 1531 |
if (*errmsg) {
|
| 1532 |
g_free(*errmsg); |
| 1533 |
} |
| 1534 |
|
| 1535 |
#ifdef WIN32
|
| 1536 |
*errmsg = WSAGetStrError(last_errno); |
| 1537 |
#else
|
| 1538 |
*errmsg = g_strdup(strerror(last_errno)); |
| 1539 |
#endif
|
| 1540 |
} |
| 1541 |
|
| 1542 |
continue;
|
| 1543 |
} |
| 1544 |
|
| 1545 |
// Set the connection timeout on the socket
|
| 1546 |
#ifdef WIN32
|
| 1547 |
tv = 5000; /* F*cking Winsock uses an integer for the timeout and it's value is in milliseconds */ |
| 1548 |
|
| 1549 |
setsockopt(conn->poll_fd.fd, SOL_SOCKET, SO_RCVTIMEO, (char*) &tv, sizeof(tv)); |
| 1550 |
setsockopt(conn->poll_fd.fd, SOL_SOCKET, SO_SNDTIMEO, (char*) &tv, sizeof(tv)); |
| 1551 |
#else
|
| 1552 |
tv.tv_sec = 5;
|
| 1553 |
tv.tv_usec = 0;
|
| 1554 |
|
| 1555 |
setsockopt(conn->poll_fd.fd, SOL_SOCKET, SO_RCVTIMEO, (const void*) &tv, sizeof(tv)); |
| 1556 |
setsockopt(conn->poll_fd.fd, SOL_SOCKET, SO_SNDTIMEO, (const void*) &tv, sizeof(tv)); |
| 1557 |
#endif
|
| 1558 |
|
| 1559 |
// Try to connect to the server
|
| 1560 |
nntpgrab_core_emit_connecting(FALSE, conn->server_info.servername, conn->connection_id); |
| 1561 |
|
| 1562 |
// Mark the socket as non-blocking
|
| 1563 |
#ifdef WIN32
|
| 1564 |
ioctlArg = 1;
|
| 1565 |
ioctlsocket(conn->poll_fd.fd, FIONBIO, &ioctlArg); |
| 1566 |
#else
|
| 1567 |
mode = fcntl(conn->poll_fd.fd, F_GETFL, 0);
|
| 1568 |
fcntl(conn->poll_fd.fd, F_SETFL, mode | O_NONBLOCK); |
| 1569 |
#endif
|
| 1570 |
|
| 1571 |
ret = connect(conn->poll_fd.fd, res->ai_addr, (int) res->ai_addrlen);
|
| 1572 |
if (ret == 0) { |
| 1573 |
// Connection succesfull
|
| 1574 |
last_errno = 0;
|
| 1575 |
break;
|
| 1576 |
#ifndef WIN32
|
| 1577 |
} else if (errno == EINPROGRESS) { |
| 1578 |
// Wait for at most 5 seconds
|
| 1579 |
socklen_t len; |
| 1580 |
|
| 1581 |
time_t now = time(NULL);
|
| 1582 |
do {
|
| 1583 |
// According to https://cr.yp.to/docs/connect.html there are various
|
| 1584 |
// ways to detect if a socket is connected. The getpeername() method
|
| 1585 |
// should be the most portable one
|
| 1586 |
if (res->ai_family == AF_INET6) {
|
| 1587 |
struct sockaddr_in6 name;
|
| 1588 |
len = sizeof(name);
|
| 1589 |
if (getpeername(conn->poll_fd.fd, (struct sockaddr*) &name, &len) == 0) { |
| 1590 |
errno = 0;
|
| 1591 |
break;
|
| 1592 |
} |
| 1593 |
} else {
|
| 1594 |
struct sockaddr_in name;
|
| 1595 |
len = sizeof(name);
|
| 1596 |
if (getpeername(conn->poll_fd.fd, (struct sockaddr*) &name, &len) == 0) { |
| 1597 |
errno = 0;
|
| 1598 |
break;
|
| 1599 |
} |
| 1600 |
} |
| 1601 |
|
| 1602 |
g_usleep(G_USEC_PER_SEC / 10);
|
| 1603 |
|
| 1604 |
if (download_thread_get_state() != SCHEDULAR_STATE_RUNNING) {
|
| 1605 |
break;
|
| 1606 |
} |
| 1607 |
} while (now + 5 > time(NULL)); |
| 1608 |
|
| 1609 |
if (errno == 0) { |
| 1610 |
last_errno = 0;
|
| 1611 |
break;
|
| 1612 |
} |
| 1613 |
#else
|
| 1614 |
} else if (WSAGetLastError() == WSAEWOULDBLOCK) { |
| 1615 |
// And Windows again has different behaviour....
|
| 1616 |
struct timeval tv;
|
| 1617 |
fd_set send_fds; |
| 1618 |
int len;
|
| 1619 |
|
| 1620 |
FD_ZERO(&send_fds); |
| 1621 |
FD_SET(conn->poll_fd.fd, &send_fds); |
| 1622 |
|
| 1623 |
tv.tv_sec = 5;
|
| 1624 |
tv.tv_usec = 0;
|
| 1625 |
|
| 1626 |
len = select(conn->poll_fd.fd + 1, NULL, &send_fds, NULL, &tv); |
| 1627 |
if (len <= 0) { |
| 1628 |
// Read timeout or some other error
|
| 1629 |
if (len == 0) { |
| 1630 |
errno = WSAETIMEDOUT; |
| 1631 |
} |
| 1632 |
} else {
|
| 1633 |
// Connection is made
|
| 1634 |
last_errno = 0;
|
| 1635 |
break;
|
| 1636 |
} |
| 1637 |
#endif
|
| 1638 |
} |
| 1639 |
|
| 1640 |
// Connection could not be made, save the errno
|
| 1641 |
#ifndef WIN32
|
| 1642 |
if (errno == EINPROGRESS) {
|
| 1643 |
// The connection could not be established within the connect time limit.
|
| 1644 |
// This provides a more clear error message
|
| 1645 |
last_errno = ETIMEDOUT; |
| 1646 |
} else
|
| 1647 |
#endif
|
| 1648 |
{
|
| 1649 |
last_errno = errno; |
| 1650 |
} |
| 1651 |
|
| 1652 |
if (errmsg) {
|
| 1653 |
if (*errmsg) {
|
| 1654 |
g_free(*errmsg); |
| 1655 |
} |
| 1656 |
|
| 1657 |
#ifdef WIN32
|
| 1658 |
*errmsg = WSAGetStrError(last_errno); |
| 1659 |
#else
|
| 1660 |
*errmsg = g_strdup(strerror(last_errno)); |
| 1661 |
#endif
|
| 1662 |
} |
| 1663 |
|
| 1664 |
#if WIN32
|
| 1665 |
if (last_errno == WSAETIMEDOUT) {
|
| 1666 |
#else
|
| 1667 |
if (last_errno == ETIMEDOUT) {
|
| 1668 |
#endif
|
| 1669 |
disconnect_type = DISCONNECT_CONNECT_TIMEOUT; |
| 1670 |
} else {
|
| 1671 |
disconnect_type = DISCONNECT_CONNECTION_REFUSED; |
| 1672 |
} |
| 1673 |
|
| 1674 |
#ifdef WIN32
|
| 1675 |
nntpconnection_disconnect_from_server(conn, disconnect_type, WSAGetStrError(last_errno), __FILE__, __LINE__); |
| 1676 |
#else
|
| 1677 |
nntpconnection_disconnect_from_server(conn, disconnect_type, strerror(last_errno), __FILE__, __LINE__); |
| 1678 |
#endif
|
| 1679 |
|
| 1680 |
res = res->ai_next; |
| 1681 |
} |
| 1682 |
|
| 1683 |
if (conn->poll_fd.fd == -1) { |
| 1684 |
switch (last_errno) {
|
| 1685 |
#if WIN32
|
| 1686 |
case WSAETIMEDOUT: |
| 1687 |
#else
|
| 1688 |
case ETIMEDOUT: |
| 1689 |
#endif
|
| 1690 |
return NNTP_CONNECTION_ERROR_CONNECTION_TIMEOUT;
|
| 1691 |
|
| 1692 |
default:
|
| 1693 |
return NNTP_CONNECTION_ERROR_CONNECTION_REFUSED;
|
| 1694 |
}; |
| 1695 |
} |
| 1696 |
|
| 1697 |
// Mark the socket as blocking
|
| 1698 |
#ifdef WIN32
|
| 1699 |
ioctlArg = 0;
|
| 1700 |
ioctlsocket(conn->poll_fd.fd, FIONBIO, &ioctlArg); |
| 1701 |
#else
|
| 1702 |
mode = fcntl(conn->poll_fd.fd, F_GETFL, 0);
|
| 1703 |
fcntl(conn->poll_fd.fd, F_SETFL, mode ^ O_NONBLOCK); |
| 1704 |
#endif
|
| 1705 |
|
| 1706 |
#ifdef HAVE_SSL
|
| 1707 |
if (conn->server_info.use_ssl && !proxy_host) {
|
| 1708 |
#ifdef HAVE_GNUTLS
|
| 1709 |
if (!prepare_gnutls_connection(conn, errmsg)) {
|
| 1710 |
#else
|
| 1711 |
if ((conn->ssl = prepare_ssl_connection(conn->poll_fd.fd, errmsg)) == NULL) { |
| 1712 |
#endif
|
| 1713 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_ERROR_SSL_INITIALISE, *errmsg, __FILE__, __LINE__); |
| 1714 |
return NNTP_CONNECTION_ERROR_SSL_INITIALISE;
|
| 1715 |
} |
| 1716 |
} |
| 1717 |
#endif
|
| 1718 |
|
| 1719 |
if (proxy_host) {
|
| 1720 |
char cmd[128]; |
| 1721 |
|
| 1722 |
memset(&cmd, 0, sizeof(cmd)); |
| 1723 |
snprintf(cmd, sizeof(cmd) - 1, "CONNECT %s:%i HTTP/1.1\r\nHost: %s:%i\r\n\r\n", conn->server_info.hostname, conn->server_info.port, conn->server_info.hostname, conn->server_info.port); |
| 1724 |
send(conn->poll_fd.fd, cmd, strlen(cmd), 0);
|
| 1725 |
|
| 1726 |
g_free(proxy_host); |
| 1727 |
|
| 1728 |
conn->active_method = nntpconnection_process_proxy_connect_command; |
| 1729 |
} else {
|
| 1730 |
conn->active_method = nntpconnection_process_welcome_msg; |
| 1731 |
} |
| 1732 |
memset(conn->recv_buffer, 0, sizeof(conn->recv_buffer)); |
| 1733 |
conn->recv_buffer_length = 0;
|
| 1734 |
conn->last_activity_stamp = time(NULL);
|
| 1735 |
conn->last_disconnect_stamp = 0;
|
| 1736 |
|
| 1737 |
return NNTP_CONNECTION_ERROR_NONE;
|
| 1738 |
} |
| 1739 |
|
| 1740 |
void
|
| 1741 |
nntpconnection_disconnect_from_server(NNTPConnectionInfo *conn, NNTPDisconnectType disconnect_type, const char *reason, const char *cause_file, int cause_lineno) |
| 1742 |
{
|
| 1743 |
g_return_if_fail(conn != NULL);
|
| 1744 |
g_return_if_fail(conn->poll_fd.fd >= 0);
|
| 1745 |
g_return_if_fail(cause_file != NULL);
|
| 1746 |
|
| 1747 |
ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "Request received to disconnect connection %i, poll_fd = %i, disconnect_type = %i, reason = %s, cause = %s:%i, recv_buf_len = %i, recv_buf=%s", conn->connection_id, conn->poll_fd.fd, disconnect_type, reason, cause_file, cause_lineno, conn->recv_buffer_length, conn->recv_buffer); |
| 1748 |
|
| 1749 |
#ifdef WIN32
|
| 1750 |
/* DisconnectEx(conn->poll_fd.fd, NULL, 0, 0); * MinGW doesn't have DisconnectEx exported... */
|
| 1751 |
shutdown(conn->poll_fd.fd, SD_BOTH); /* The shutdown() function is broken on Win32, see
|
| 1752 |
* https://msdn.microsoft.com/en-us/library/ms738547%28VS.85%29.aspx |
| 1753 |
* for details*/ |
| 1754 |
closesocket(conn->poll_fd.fd); |
| 1755 |
#else
|
| 1756 |
shutdown(conn->poll_fd.fd, SHUT_RDWR); |
| 1757 |
close(conn->poll_fd.fd); |
| 1758 |
#endif
|
| 1759 |
|
| 1760 |
if (conn->collection && conn->file && conn->part) {
|
| 1761 |
/* Update the file status */
|
| 1762 |
download_queue_update_part_status(conn, conn->collection, conn->file, conn->part, conn->server_id, FALSE, FALSE, FALSE); |
| 1763 |
} |
| 1764 |
|
| 1765 |
nntpgrab_core_emit_disconnect(FALSE, conn->server_info.servername, conn->connection_id, disconnect_type, reason); |
| 1766 |
|
| 1767 |
conn->poll_fd.fd = -1;
|
| 1768 |
conn->is_idle = TRUE; |
| 1769 |
if (disconnect_type == DISCONNECT_NORMAL) {
|
| 1770 |
conn->last_disconnect_stamp = 0;
|
| 1771 |
} else {
|
| 1772 |
conn->last_disconnect_stamp = time(NULL);
|
| 1773 |
} |
| 1774 |
conn->last_activity_stamp = 0;
|
| 1775 |
|
| 1776 |
if (conn->collection) {
|
| 1777 |
collection_unref(conn->collection); |
| 1778 |
conn->collection = NULL;
|
| 1779 |
} |
| 1780 |
|
| 1781 |
if (conn->file) {
|
| 1782 |
file_unref(conn->file); |
| 1783 |
conn->file = NULL;
|
| 1784 |
} |
| 1785 |
|
| 1786 |
if (conn->part) {
|
| 1787 |
conn->part = NULL;
|
| 1788 |
} |
| 1789 |
|
| 1790 |
conn->job_type = NNTP_JOB_TYPE_NONE; |
| 1791 |
|
| 1792 |
if (conn->article_fd >= 0) { |
| 1793 |
close(conn->article_fd); |
| 1794 |
conn->article_fd = -1;
|
| 1795 |
} |
| 1796 |
} |
| 1797 |
|
| 1798 |
void
|
| 1799 |
nntpconnection_process_socket_activity(NNTPConnectionInfo *conn) |
| 1800 |
{
|
| 1801 |
g_return_if_fail(conn != NULL);
|
| 1802 |
|
| 1803 |
if (!conn->active_method) {
|
| 1804 |
ng_plugin_emit_log_msg(NULL, NG_LOG_LEVEL_INFO, "NNTP connection to server '%s' (connection_id %i, poll_fd %i) is in an undefined state", conn->server_info.servername, conn->connection_id, conn->poll_fd.fd); |
| 1805 |
nntpconnection_disconnect_from_server(conn, DISCONNECT_UNEXPECTED, _("NNTP Connection is in an undefined state"), __FILE__, __LINE__);
|
| 1806 |
return;
|
| 1807 |
} |
| 1808 |
|
| 1809 |
conn->active_method(conn); |
| 1810 |
conn->last_activity_stamp = time(NULL);
|
| 1811 |
} |