mirror of
https://github.com/moparisthebest/curl
synced 2024-11-05 09:05:04 -05:00
dcd6f81025
The function does not return the same value as snprintf() normally does, so readers may be mislead into thinking the code works differently than it actually does. A different function name makes this easier to detect. Reported-by: Tomas Hoger Assisted-by: Daniel Gustafsson Fixes #3296 Closes #3297
457 lines
10 KiB
C
457 lines
10 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 "curl_setup.h"
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#include <curl/curl.h>
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#include "urldata.h"
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#include "vtls/vtls.h"
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#include "http2.h"
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#include "ssh.h"
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#include "curl_printf.h"
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#ifdef USE_ARES
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# if defined(CURL_STATICLIB) && !defined(CARES_STATICLIB) && \
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(defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__))
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# define CARES_STATICLIB
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# endif
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# include <ares.h>
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#endif
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#ifdef USE_LIBIDN2
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#include <idn2.h>
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#endif
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#ifdef USE_LIBPSL
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#include <libpsl.h>
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#endif
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#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
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#include <iconv.h>
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#endif
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#ifdef USE_LIBRTMP
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#include <librtmp/rtmp.h>
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#endif
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#ifdef USE_LIBSSH2
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#include <libssh2.h>
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#endif
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#ifdef HAVE_LIBSSH2_VERSION
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/* get it run-time if possible */
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#define CURL_LIBSSH2_VERSION libssh2_version(0)
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#else
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/* use build-time if run-time not possible */
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#define CURL_LIBSSH2_VERSION LIBSSH2_VERSION
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#endif
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#ifdef HAVE_ZLIB_H
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#include <zlib.h>
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#ifdef __SYMBIAN32__
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/* zlib pollutes the namespace with this definition */
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#undef WIN32
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#endif
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#endif
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#ifdef HAVE_BROTLI
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#include <brotli/decode.h>
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#endif
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void Curl_version_init(void);
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/* For thread safety purposes this function is called by global_init so that
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the static data in both version functions is initialized. */
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void Curl_version_init(void)
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{
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curl_version();
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curl_version_info(CURLVERSION_NOW);
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}
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#ifdef HAVE_BROTLI
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static size_t brotli_version(char *buf, size_t bufsz)
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{
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uint32_t brotli_version = BrotliDecoderVersion();
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unsigned int major = brotli_version >> 24;
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unsigned int minor = (brotli_version & 0x00FFFFFF) >> 12;
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unsigned int patch = brotli_version & 0x00000FFF;
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return msnprintf(buf, bufsz, "%u.%u.%u", major, minor, patch);
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}
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#endif
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char *curl_version(void)
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{
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static bool initialized;
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static char version[200];
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char *ptr = version;
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size_t len;
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size_t left = sizeof(version);
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if(initialized)
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return version;
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strcpy(ptr, LIBCURL_NAME "/" LIBCURL_VERSION);
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len = strlen(ptr);
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left -= len;
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ptr += len;
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if(left > 1) {
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len = Curl_ssl_version(ptr + 1, left - 1);
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if(len > 0) {
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*ptr = ' ';
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left -= ++len;
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ptr += len;
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}
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}
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#ifdef HAVE_LIBZ
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len = msnprintf(ptr, left, " zlib/%s", zlibVersion());
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left -= len;
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ptr += len;
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#endif
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#ifdef HAVE_BROTLI
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len = msnprintf(ptr, left, "%s", " brotli/");
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left -= len;
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ptr += len;
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len = brotli_version(ptr, left);
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left -= len;
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ptr += len;
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#endif
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#ifdef USE_ARES
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/* this function is only present in c-ares, not in the original ares */
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len = msnprintf(ptr, left, " c-ares/%s", ares_version(NULL));
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left -= len;
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ptr += len;
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#endif
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#ifdef USE_LIBIDN2
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if(idn2_check_version(IDN2_VERSION)) {
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len = msnprintf(ptr, left, " libidn2/%s", idn2_check_version(NULL));
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left -= len;
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ptr += len;
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}
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#endif
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#ifdef USE_LIBPSL
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len = msnprintf(ptr, left, " libpsl/%s", psl_get_version());
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left -= len;
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ptr += len;
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#endif
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#ifdef USE_WIN32_IDN
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len = msnprintf(ptr, left, " WinIDN");
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left -= len;
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ptr += len;
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#endif
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#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
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#ifdef _LIBICONV_VERSION
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len = msnprintf(ptr, left, " iconv/%d.%d",
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_LIBICONV_VERSION >> 8, _LIBICONV_VERSION & 255);
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#else
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/* version unknown */
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len = msnprintf(ptr, left, " iconv");
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#endif /* _LIBICONV_VERSION */
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left -= len;
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ptr += len;
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#endif
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#ifdef USE_LIBSSH2
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len = msnprintf(ptr, left, " libssh2/%s", CURL_LIBSSH2_VERSION);
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left -= len;
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ptr += len;
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#endif
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#ifdef USE_LIBSSH
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len = msnprintf(ptr, left, " libssh/%s", CURL_LIBSSH_VERSION);
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left -= len;
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ptr += len;
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#endif
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#ifdef USE_NGHTTP2
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len = Curl_http2_ver(ptr, left);
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left -= len;
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ptr += len;
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#endif
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#ifdef USE_LIBRTMP
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{
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char suff[2];
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if(RTMP_LIB_VERSION & 0xff) {
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suff[0] = (RTMP_LIB_VERSION & 0xff) + 'a' - 1;
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suff[1] = '\0';
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}
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else
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suff[0] = '\0';
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msnprintf(ptr, left, " librtmp/%d.%d%s",
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RTMP_LIB_VERSION >> 16, (RTMP_LIB_VERSION >> 8) & 0xff,
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suff);
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/*
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If another lib version is added below this one, this code would
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also have to do:
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len = what msnprintf() returned
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left -= len;
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ptr += len;
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*/
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}
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#endif
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initialized = true;
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return version;
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}
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/* data for curl_version_info
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Keep the list sorted alphabetically. It is also written so that each
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protocol line has its own #if line to make things easier on the eye.
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*/
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static const char * const protocols[] = {
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#ifndef CURL_DISABLE_DICT
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"dict",
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#endif
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#ifndef CURL_DISABLE_FILE
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"file",
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#endif
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#ifndef CURL_DISABLE_FTP
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"ftp",
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#endif
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#if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)
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"ftps",
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#endif
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#ifndef CURL_DISABLE_GOPHER
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"gopher",
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#endif
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#ifndef CURL_DISABLE_HTTP
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"http",
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#endif
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#if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)
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"https",
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#endif
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#ifndef CURL_DISABLE_IMAP
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"imap",
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#endif
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#if defined(USE_SSL) && !defined(CURL_DISABLE_IMAP)
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"imaps",
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#endif
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#ifndef CURL_DISABLE_LDAP
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"ldap",
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#if !defined(CURL_DISABLE_LDAPS) && \
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((defined(USE_OPENLDAP) && defined(USE_SSL)) || \
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(!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))
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"ldaps",
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#endif
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#endif
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#ifndef CURL_DISABLE_POP3
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"pop3",
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#endif
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#if defined(USE_SSL) && !defined(CURL_DISABLE_POP3)
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"pop3s",
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#endif
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#ifdef USE_LIBRTMP
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"rtmp",
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#endif
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#ifndef CURL_DISABLE_RTSP
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"rtsp",
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#endif
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#if defined(USE_LIBSSH) || defined(USE_LIBSSH2)
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"scp",
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"sftp",
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#endif
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#if !defined(CURL_DISABLE_SMB) && defined(USE_NTLM) && \
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(CURL_SIZEOF_CURL_OFF_T > 4) && \
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(!defined(USE_WINDOWS_SSPI) || defined(USE_WIN32_CRYPTO))
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"smb",
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# ifdef USE_SSL
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"smbs",
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# endif
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#endif
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#ifndef CURL_DISABLE_SMTP
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"smtp",
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#endif
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#if defined(USE_SSL) && !defined(CURL_DISABLE_SMTP)
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"smtps",
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#endif
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#ifndef CURL_DISABLE_TELNET
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"telnet",
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#endif
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#ifndef CURL_DISABLE_TFTP
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"tftp",
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#endif
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NULL
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};
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static curl_version_info_data version_info = {
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CURLVERSION_NOW,
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LIBCURL_VERSION,
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LIBCURL_VERSION_NUM,
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OS, /* as found by configure or set by hand at build-time */
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0 /* features is 0 by default */
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#ifdef ENABLE_IPV6
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| CURL_VERSION_IPV6
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#endif
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#ifdef USE_SSL
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| CURL_VERSION_SSL
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#endif
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#ifdef USE_NTLM
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| CURL_VERSION_NTLM
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#endif
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#if !defined(CURL_DISABLE_HTTP) && defined(USE_NTLM) && \
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defined(NTLM_WB_ENABLED)
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| CURL_VERSION_NTLM_WB
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#endif
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#ifdef USE_SPNEGO
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| CURL_VERSION_SPNEGO
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#endif
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#ifdef USE_KERBEROS5
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| CURL_VERSION_KERBEROS5
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#endif
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#ifdef HAVE_GSSAPI
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| CURL_VERSION_GSSAPI
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#endif
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#ifdef USE_WINDOWS_SSPI
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| CURL_VERSION_SSPI
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#endif
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#ifdef HAVE_LIBZ
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| CURL_VERSION_LIBZ
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#endif
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#ifdef DEBUGBUILD
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| CURL_VERSION_DEBUG
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#endif
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#ifdef CURLDEBUG
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| CURL_VERSION_CURLDEBUG
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#endif
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#ifdef CURLRES_ASYNCH
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| CURL_VERSION_ASYNCHDNS
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#endif
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#if (CURL_SIZEOF_CURL_OFF_T > 4) && \
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( (SIZEOF_OFF_T > 4) || defined(USE_WIN32_LARGE_FILES) )
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| CURL_VERSION_LARGEFILE
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#endif
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#if defined(CURL_DOES_CONVERSIONS)
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| CURL_VERSION_CONV
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#endif
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#if defined(USE_TLS_SRP)
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| CURL_VERSION_TLSAUTH_SRP
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#endif
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#if defined(USE_NGHTTP2)
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| CURL_VERSION_HTTP2
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#endif
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#if defined(USE_UNIX_SOCKETS)
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| CURL_VERSION_UNIX_SOCKETS
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#endif
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#if defined(USE_LIBPSL)
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| CURL_VERSION_PSL
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#endif
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#if defined(CURL_WITH_MULTI_SSL)
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| CURL_VERSION_MULTI_SSL
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#endif
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#if defined(HAVE_BROTLI)
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| CURL_VERSION_BROTLI
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#endif
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,
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NULL, /* ssl_version */
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0, /* ssl_version_num, this is kept at zero */
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NULL, /* zlib_version */
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protocols,
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NULL, /* c-ares version */
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0, /* c-ares version numerical */
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NULL, /* libidn version */
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0, /* iconv version */
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NULL, /* ssh lib version */
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0, /* brotli_ver_num */
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NULL, /* brotli version */
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};
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curl_version_info_data *curl_version_info(CURLversion stamp)
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{
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static bool initialized;
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#if defined(USE_LIBSSH) || defined(USE_LIBSSH2)
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static char ssh_buffer[80];
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#endif
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#ifdef USE_SSL
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static char ssl_buffer[80];
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#endif
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#ifdef HAVE_BROTLI
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static char brotli_buffer[80];
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#endif
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if(initialized)
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return &version_info;
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#ifdef USE_SSL
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Curl_ssl_version(ssl_buffer, sizeof(ssl_buffer));
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version_info.ssl_version = ssl_buffer;
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if(Curl_ssl->supports & SSLSUPP_HTTPS_PROXY)
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version_info.features |= CURL_VERSION_HTTPS_PROXY;
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else
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version_info.features &= ~CURL_VERSION_HTTPS_PROXY;
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#endif
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#ifdef HAVE_LIBZ
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version_info.libz_version = zlibVersion();
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/* libz left NULL if non-existing */
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#endif
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#ifdef USE_ARES
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{
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int aresnum;
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version_info.ares = ares_version(&aresnum);
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version_info.ares_num = aresnum;
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}
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#endif
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#ifdef USE_LIBIDN2
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/* This returns a version string if we use the given version or later,
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otherwise it returns NULL */
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version_info.libidn = idn2_check_version(IDN2_VERSION);
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if(version_info.libidn)
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version_info.features |= CURL_VERSION_IDN;
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#elif defined(USE_WIN32_IDN)
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version_info.features |= CURL_VERSION_IDN;
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#endif
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#if defined(HAVE_ICONV) && defined(CURL_DOES_CONVERSIONS)
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#ifdef _LIBICONV_VERSION
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version_info.iconv_ver_num = _LIBICONV_VERSION;
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#else
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/* version unknown */
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version_info.iconv_ver_num = -1;
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#endif /* _LIBICONV_VERSION */
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#endif
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#if defined(USE_LIBSSH2)
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msnprintf(ssh_buffer, sizeof(ssh_buffer), "libssh2/%s", LIBSSH2_VERSION);
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version_info.libssh_version = ssh_buffer;
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#elif defined(USE_LIBSSH)
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msnprintf(ssh_buffer, sizeof(ssh_buffer), "libssh/%s", CURL_LIBSSH_VERSION);
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version_info.libssh_version = ssh_buffer;
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#endif
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#ifdef HAVE_BROTLI
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version_info.brotli_ver_num = BrotliDecoderVersion();
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brotli_version(brotli_buffer, sizeof(brotli_buffer));
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version_info.brotli_version = brotli_buffer;
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#endif
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(void)stamp; /* avoid compiler warnings, we don't use this */
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initialized = true;
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return &version_info;
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}
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