502 lines
12 KiB
C
502 lines
12 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "server_setup.h"
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#ifdef _XOPEN_SOURCE_EXTENDED
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/* This define is "almost" required to build on HPUX 11 */
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_POLL_H
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#include <poll.h>
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#elif defined(HAVE_SYS_POLL_H)
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#include <sys/poll.h>
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#endif
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#ifdef __MINGW32__
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#include <w32api.h>
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#endif
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#define ENABLE_CURLX_PRINTF
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/* make the curlx header define all printf() functions to use the curlx_*
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versions instead */
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#include "curlx.h" /* from the private lib dir */
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#include "getpart.h"
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#include "util.h"
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#include "timeval.h"
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#ifdef USE_WINSOCK
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#undef EINTR
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#define EINTR 4 /* errno.h value */
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#undef EINVAL
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#define EINVAL 22 /* errno.h value */
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#endif
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/* MinGW with w32api version < 3.6 declared in6addr_any as extern,
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but lacked the definition */
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#if defined(ENABLE_IPV6) && defined(__MINGW32__)
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#if (__W32API_MAJOR_VERSION < 3) || \
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((__W32API_MAJOR_VERSION == 3) && (__W32API_MINOR_VERSION < 6))
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const struct in6_addr in6addr_any = {{ IN6ADDR_ANY_INIT }};
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#endif /* w32api < 3.6 */
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#endif /* ENABLE_IPV6 && __MINGW32__*/
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static struct timeval tvnow(void);
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/* This function returns a pointer to STATIC memory. It converts the given
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* binary lump to a hex formatted string usable for output in logs or
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* whatever.
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*/
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char *data_to_hex(char *data, size_t len)
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{
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static char buf[256*3];
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size_t i;
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char *optr = buf;
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char *iptr = data;
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if(len > 255)
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len = 255;
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for(i = 0; i < len; i++) {
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if((data[i] >= 0x20) && (data[i] < 0x7f))
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*optr++ = *iptr++;
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else {
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msnprintf(optr, 4, "%%%02x", *iptr++);
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optr += 3;
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}
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}
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*optr = 0; /* in case no sprintf was used */
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return buf;
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}
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void logmsg(const char *msg, ...)
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{
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va_list ap;
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char buffer[2048 + 1];
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FILE *logfp;
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struct timeval tv;
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time_t sec;
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struct tm *now;
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char timebuf[20];
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static time_t epoch_offset;
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static int known_offset;
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if(!serverlogfile) {
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fprintf(stderr, "Error: serverlogfile not set\n");
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return;
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}
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tv = tvnow();
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if(!known_offset) {
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epoch_offset = time(NULL) - tv.tv_sec;
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known_offset = 1;
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}
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sec = epoch_offset + tv.tv_sec;
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now = localtime(&sec); /* not thread safe but we don't care */
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msnprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d.%06ld",
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(int)now->tm_hour, (int)now->tm_min, (int)now->tm_sec,
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(long)tv.tv_usec);
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va_start(ap, msg);
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mvsnprintf(buffer, sizeof(buffer), msg, ap);
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va_end(ap);
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logfp = fopen(serverlogfile, "ab");
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if(logfp) {
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fprintf(logfp, "%s %s\n", timebuf, buffer);
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fclose(logfp);
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}
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else {
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int error = errno;
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fprintf(stderr, "fopen() failed with error: %d %s\n",
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error, strerror(error));
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fprintf(stderr, "Error opening file: %s\n", serverlogfile);
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fprintf(stderr, "Msg not logged: %s %s\n", timebuf, buffer);
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}
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}
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#ifdef WIN32
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/* use instead of perror() on generic windows */
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void win32_perror(const char *msg)
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{
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char buf[512];
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DWORD err = SOCKERRNO;
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if(!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, err,
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LANG_NEUTRAL, buf, sizeof(buf), NULL))
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msnprintf(buf, sizeof(buf), "Unknown error %lu (%#lx)", err, err);
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if(msg)
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fprintf(stderr, "%s: ", msg);
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fprintf(stderr, "%s\n", buf);
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}
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#endif /* WIN32 */
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#ifdef USE_WINSOCK
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void win32_init(void)
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{
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WORD wVersionRequested;
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WSADATA wsaData;
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int err;
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wVersionRequested = MAKEWORD(USE_WINSOCK, USE_WINSOCK);
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err = WSAStartup(wVersionRequested, &wsaData);
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if(err != 0) {
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perror("Winsock init failed");
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logmsg("Error initialising winsock -- aborting");
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exit(1);
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}
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if(LOBYTE(wsaData.wVersion) != USE_WINSOCK ||
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HIBYTE(wsaData.wVersion) != USE_WINSOCK) {
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WSACleanup();
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perror("Winsock init failed");
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logmsg("No suitable winsock.dll found -- aborting");
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exit(1);
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}
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}
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void win32_cleanup(void)
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{
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WSACleanup();
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}
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#endif /* USE_WINSOCK */
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/* set by the main code to point to where the test dir is */
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const char *path = ".";
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char *test2file(long testno)
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{
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static char filename[256];
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msnprintf(filename, sizeof(filename), TEST_DATA_PATH, path, testno);
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return filename;
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}
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/*
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* Portable function used for waiting a specific amount of ms.
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* Waiting indefinitely with this function is not allowed, a
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* zero or negative timeout value will return immediately.
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*
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* Return values:
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* -1 = system call error, or invalid timeout value
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* 0 = specified timeout has elapsed
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*/
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int wait_ms(int timeout_ms)
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{
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#if !defined(MSDOS) && !defined(USE_WINSOCK)
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#ifndef HAVE_POLL_FINE
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struct timeval pending_tv;
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#endif
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struct timeval initial_tv;
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int pending_ms;
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#endif
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int r = 0;
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if(!timeout_ms)
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return 0;
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if(timeout_ms < 0) {
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errno = EINVAL;
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return -1;
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}
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#if defined(MSDOS)
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delay(timeout_ms);
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#elif defined(USE_WINSOCK)
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Sleep(timeout_ms);
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#else
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pending_ms = timeout_ms;
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initial_tv = tvnow();
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do {
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int error;
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#if defined(HAVE_POLL_FINE)
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r = poll(NULL, 0, pending_ms);
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#else
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pending_tv.tv_sec = pending_ms / 1000;
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pending_tv.tv_usec = (pending_ms % 1000) * 1000;
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r = select(0, NULL, NULL, NULL, &pending_tv);
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#endif /* HAVE_POLL_FINE */
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if(r != -1)
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break;
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error = errno;
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if(error && (error != EINTR))
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break;
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pending_ms = timeout_ms - (int)timediff(tvnow(), initial_tv);
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if(pending_ms <= 0)
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break;
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} while(r == -1);
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#endif /* USE_WINSOCK */
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if(r)
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r = -1;
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return r;
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}
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int write_pidfile(const char *filename)
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{
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FILE *pidfile;
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long pid;
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pid = (long)getpid();
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pidfile = fopen(filename, "wb");
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if(!pidfile) {
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logmsg("Couldn't write pid file: %s %s", filename, strerror(errno));
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return 0; /* fail */
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}
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fprintf(pidfile, "%ld\n", pid);
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fclose(pidfile);
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logmsg("Wrote pid %ld to %s", pid, filename);
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return 1; /* success */
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}
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void set_advisor_read_lock(const char *filename)
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{
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FILE *lockfile;
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int error = 0;
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int res;
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do {
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lockfile = fopen(filename, "wb");
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} while((lockfile == NULL) && ((error = errno) == EINTR));
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if(lockfile == NULL) {
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logmsg("Error creating lock file %s error: %d %s",
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filename, error, strerror(error));
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return;
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}
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do {
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res = fclose(lockfile);
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} while(res && ((error = errno) == EINTR));
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if(res)
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logmsg("Error closing lock file %s error: %d %s",
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filename, error, strerror(error));
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}
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void clear_advisor_read_lock(const char *filename)
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{
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int error = 0;
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int res;
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/*
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** Log all removal failures. Even those due to file not existing.
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** This allows to detect if unexpectedly the file has already been
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** removed by a process different than the one that should do this.
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*/
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do {
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res = unlink(filename);
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} while(res && ((error = errno) == EINTR));
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if(res)
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logmsg("Error removing lock file %s error: %d %s",
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filename, error, strerror(error));
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}
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/* Portable, consistent toupper (remember EBCDIC). Do not use toupper() because
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its behavior is altered by the current locale. */
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static char raw_toupper(char in)
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{
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#if !defined(CURL_DOES_CONVERSIONS)
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if(in >= 'a' && in <= 'z')
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return (char)('A' + in - 'a');
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#else
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switch(in) {
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case 'a':
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return 'A';
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case 'b':
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return 'B';
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case 'c':
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return 'C';
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case 'd':
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return 'D';
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case 'e':
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return 'E';
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case 'f':
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return 'F';
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case 'g':
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return 'G';
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case 'h':
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return 'H';
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case 'i':
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return 'I';
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case 'j':
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return 'J';
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case 'k':
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return 'K';
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case 'l':
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return 'L';
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case 'm':
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return 'M';
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case 'n':
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return 'N';
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case 'o':
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return 'O';
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case 'p':
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return 'P';
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case 'q':
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return 'Q';
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case 'r':
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return 'R';
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case 's':
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return 'S';
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case 't':
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return 'T';
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case 'u':
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return 'U';
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case 'v':
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return 'V';
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case 'w':
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return 'W';
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case 'x':
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return 'X';
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case 'y':
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return 'Y';
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case 'z':
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return 'Z';
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}
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#endif
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return in;
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}
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int strncasecompare(const char *first, const char *second, size_t max)
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{
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while(*first && *second && max) {
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if(raw_toupper(*first) != raw_toupper(*second)) {
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break;
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}
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max--;
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first++;
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second++;
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}
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if(0 == max)
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return 1; /* they are equal this far */
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return raw_toupper(*first) == raw_toupper(*second);
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}
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#if defined(WIN32) && !defined(MSDOS)
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static struct timeval tvnow(void)
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{
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/*
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** GetTickCount() is available on _all_ Windows versions from W95 up
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** to nowadays. Returns milliseconds elapsed since last system boot,
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** increases monotonically and wraps once 49.7 days have elapsed.
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**
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** GetTickCount64() is available on Windows version from Windows Vista
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** and Windows Server 2008 up to nowadays. The resolution of the
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** function is limited to the resolution of the system timer, which
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** is typically in the range of 10 milliseconds to 16 milliseconds.
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*/
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struct timeval now;
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#if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0600) && \
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(!defined(__MINGW32__) || defined(__MINGW64_VERSION_MAJOR))
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ULONGLONG milliseconds = GetTickCount64();
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#else
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DWORD milliseconds = GetTickCount();
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#endif
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now.tv_sec = (long)(milliseconds / 1000);
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now.tv_usec = (long)((milliseconds % 1000) * 1000);
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return now;
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}
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#elif defined(HAVE_CLOCK_GETTIME_MONOTONIC)
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static struct timeval tvnow(void)
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{
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/*
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** clock_gettime() is granted to be increased monotonically when the
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** monotonic clock is queried. Time starting point is unspecified, it
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** could be the system start-up time, the Epoch, or something else,
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** in any case the time starting point does not change once that the
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** system has started up.
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*/
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struct timeval now;
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struct timespec tsnow;
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if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) {
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now.tv_sec = tsnow.tv_sec;
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now.tv_usec = tsnow.tv_nsec / 1000;
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}
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/*
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** Even when the configure process has truly detected monotonic clock
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** availability, it might happen that it is not actually available at
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** run-time. When this occurs simply fallback to other time source.
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*/
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#ifdef HAVE_GETTIMEOFDAY
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else
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(void)gettimeofday(&now, NULL);
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#else
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else {
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now.tv_sec = (long)time(NULL);
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now.tv_usec = 0;
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}
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#endif
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return now;
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}
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#elif defined(HAVE_GETTIMEOFDAY)
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static struct timeval tvnow(void)
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{
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/*
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** gettimeofday() is not granted to be increased monotonically, due to
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** clock drifting and external source time synchronization it can jump
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** forward or backward in time.
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*/
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struct timeval now;
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(void)gettimeofday(&now, NULL);
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return now;
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}
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#else
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static struct timeval tvnow(void)
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{
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/*
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** time() returns the value of time in seconds since the Epoch.
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*/
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struct timeval now;
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now.tv_sec = (long)time(NULL);
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now.tv_usec = 0;
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return now;
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}
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#endif
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long timediff(struct timeval newer, struct timeval older)
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{
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timediff_t diff = newer.tv_sec-older.tv_sec;
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if(diff >= (LONG_MAX/1000))
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return LONG_MAX;
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else if(diff <= (LONG_MIN/1000))
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return LONG_MIN;
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return (long)(newer.tv_sec-older.tv_sec)*1000+
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(long)(newer.tv_usec-older.tv_usec)/1000;
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}
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