670 lines
19 KiB
C
670 lines
19 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at https://curl.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* SPDX-License-Identifier: curl
|
|
*
|
|
***************************************************************************/
|
|
/*
|
|
* The Alt-Svc: header is defined in RFC 7838:
|
|
* https://datatracker.ietf.org/doc/html/rfc7838
|
|
*/
|
|
#include "curl_setup.h"
|
|
|
|
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_ALTSVC)
|
|
#include <curl/curl.h>
|
|
#include "urldata.h"
|
|
#include "altsvc.h"
|
|
#include "curl_get_line.h"
|
|
#include "strcase.h"
|
|
#include "parsedate.h"
|
|
#include "sendf.h"
|
|
#include "warnless.h"
|
|
#include "fopen.h"
|
|
#include "rename.h"
|
|
#include "strdup.h"
|
|
#include "inet_pton.h"
|
|
#include "strparse.h"
|
|
#include "connect.h"
|
|
|
|
/* The last 3 #include files should be in this order */
|
|
#include "curl_printf.h"
|
|
#include "curl_memory.h"
|
|
#include "memdebug.h"
|
|
|
|
#define MAX_ALTSVC_LINE 4095
|
|
#define MAX_ALTSVC_DATELEN 256
|
|
#define MAX_ALTSVC_HOSTLEN 2048
|
|
#define MAX_ALTSVC_ALPNLEN 10
|
|
|
|
#define H3VERSION "h3"
|
|
|
|
/* Given the ALPN ID, return the name */
|
|
const char *Curl_alpnid2str(enum alpnid id)
|
|
{
|
|
switch(id) {
|
|
case ALPN_h1:
|
|
return "h1";
|
|
case ALPN_h2:
|
|
return "h2";
|
|
case ALPN_h3:
|
|
return H3VERSION;
|
|
default:
|
|
return ""; /* bad */
|
|
}
|
|
}
|
|
|
|
|
|
static void altsvc_free(struct altsvc *as)
|
|
{
|
|
free(as->src.host);
|
|
free(as->dst.host);
|
|
free(as);
|
|
}
|
|
|
|
static struct altsvc *altsvc_createid(const char *srchost,
|
|
size_t hlen,
|
|
const char *dsthost,
|
|
size_t dlen, /* dsthost length */
|
|
enum alpnid srcalpnid,
|
|
enum alpnid dstalpnid,
|
|
size_t srcport,
|
|
size_t dstport)
|
|
{
|
|
struct altsvc *as = calloc(1, sizeof(struct altsvc));
|
|
if(!as)
|
|
return NULL;
|
|
DEBUGASSERT(hlen);
|
|
DEBUGASSERT(dlen);
|
|
if(!hlen || !dlen)
|
|
/* bad input */
|
|
goto error;
|
|
if((hlen > 2) && srchost[0] == '[') {
|
|
/* IPv6 address, strip off brackets */
|
|
srchost++;
|
|
hlen -= 2;
|
|
}
|
|
else if(srchost[hlen - 1] == '.') {
|
|
/* strip off trailing dot */
|
|
hlen--;
|
|
if(!hlen)
|
|
goto error;
|
|
}
|
|
if((dlen > 2) && dsthost[0] == '[') {
|
|
/* IPv6 address, strip off brackets */
|
|
dsthost++;
|
|
dlen -= 2;
|
|
}
|
|
|
|
as->src.host = Curl_memdup0(srchost, hlen);
|
|
if(!as->src.host)
|
|
goto error;
|
|
|
|
as->dst.host = Curl_memdup0(dsthost, dlen);
|
|
if(!as->dst.host)
|
|
goto error;
|
|
|
|
as->src.alpnid = srcalpnid;
|
|
as->dst.alpnid = dstalpnid;
|
|
as->src.port = (unsigned short)srcport;
|
|
as->dst.port = (unsigned short)dstport;
|
|
|
|
return as;
|
|
error:
|
|
altsvc_free(as);
|
|
return NULL;
|
|
}
|
|
|
|
static struct altsvc *altsvc_create(struct Curl_str *srchost,
|
|
struct Curl_str *dsthost,
|
|
struct Curl_str *srcalpn,
|
|
struct Curl_str *dstalpn,
|
|
size_t srcport,
|
|
size_t dstport)
|
|
{
|
|
enum alpnid dstalpnid =
|
|
Curl_alpn2alpnid(Curl_str(dstalpn), Curl_strlen(dstalpn));
|
|
enum alpnid srcalpnid =
|
|
Curl_alpn2alpnid(Curl_str(srcalpn), Curl_strlen(srcalpn));
|
|
if(!srcalpnid || !dstalpnid)
|
|
return NULL;
|
|
return altsvc_createid(Curl_str(srchost), Curl_strlen(srchost),
|
|
Curl_str(dsthost), Curl_strlen(dsthost),
|
|
srcalpnid, dstalpnid,
|
|
srcport, dstport);
|
|
}
|
|
|
|
/* only returns SERIOUS errors */
|
|
static CURLcode altsvc_add(struct altsvcinfo *asi, const char *line)
|
|
{
|
|
/* Example line:
|
|
h2 example.com 443 h3 shiny.example.com 8443 "20191231 10:00:00" 1
|
|
*/
|
|
struct Curl_str srchost;
|
|
struct Curl_str dsthost;
|
|
struct Curl_str srcalpn;
|
|
struct Curl_str dstalpn;
|
|
struct Curl_str date;
|
|
curl_off_t srcport;
|
|
curl_off_t dstport;
|
|
curl_off_t persist;
|
|
curl_off_t prio;
|
|
|
|
if(Curl_str_word(&line, &srcalpn, MAX_ALTSVC_ALPNLEN) ||
|
|
Curl_str_singlespace(&line) ||
|
|
Curl_str_word(&line, &srchost, MAX_ALTSVC_HOSTLEN) ||
|
|
Curl_str_singlespace(&line) ||
|
|
Curl_str_number(&line, &srcport, 65535) ||
|
|
Curl_str_singlespace(&line) ||
|
|
Curl_str_word(&line, &dstalpn, MAX_ALTSVC_ALPNLEN) ||
|
|
Curl_str_singlespace(&line) ||
|
|
Curl_str_word(&line, &dsthost, MAX_ALTSVC_HOSTLEN) ||
|
|
Curl_str_singlespace(&line) ||
|
|
Curl_str_number(&line, &dstport, 65535) ||
|
|
Curl_str_singlespace(&line) ||
|
|
Curl_str_quotedword(&line, &date, MAX_ALTSVC_DATELEN) ||
|
|
Curl_str_singlespace(&line) ||
|
|
Curl_str_number(&line, &persist, 1) ||
|
|
Curl_str_singlespace(&line) ||
|
|
Curl_str_number(&line, &prio, 0) ||
|
|
Curl_str_newline(&line))
|
|
;
|
|
else {
|
|
struct altsvc *as;
|
|
char dbuf[MAX_ALTSVC_DATELEN + 1];
|
|
time_t expires;
|
|
|
|
/* The date parser works on a null terminated string. The maximum length
|
|
is upheld by Curl_str_quotedword(). */
|
|
memcpy(dbuf, Curl_str(&date), Curl_strlen(&date));
|
|
dbuf[Curl_strlen(&date)] = 0;
|
|
expires = Curl_getdate_capped(dbuf);
|
|
as = altsvc_create(&srchost, &dsthost, &srcalpn, &dstalpn,
|
|
(size_t)srcport, (size_t)dstport);
|
|
if(as) {
|
|
as->expires = expires;
|
|
as->prio = 0; /* not supported to just set zero */
|
|
as->persist = persist ? 1 : 0;
|
|
Curl_llist_append(&asi->list, as, &as->node);
|
|
}
|
|
}
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* Load alt-svc entries from the given file. The text based line-oriented file
|
|
* format is documented here: https://curl.se/docs/alt-svc.html
|
|
*
|
|
* This function only returns error on major problems that prevent alt-svc
|
|
* handling to work completely. It will ignore individual syntactical errors
|
|
* etc.
|
|
*/
|
|
static CURLcode altsvc_load(struct altsvcinfo *asi, const char *file)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
FILE *fp;
|
|
|
|
/* we need a private copy of the filename so that the altsvc cache file
|
|
name survives an easy handle reset */
|
|
free(asi->filename);
|
|
asi->filename = strdup(file);
|
|
if(!asi->filename)
|
|
return CURLE_OUT_OF_MEMORY;
|
|
|
|
fp = fopen(file, FOPEN_READTEXT);
|
|
if(fp) {
|
|
struct dynbuf buf;
|
|
Curl_dyn_init(&buf, MAX_ALTSVC_LINE);
|
|
while(Curl_get_line(&buf, fp)) {
|
|
const char *lineptr = Curl_dyn_ptr(&buf);
|
|
Curl_str_passblanks(&lineptr);
|
|
if(Curl_str_single(&lineptr, '#'))
|
|
altsvc_add(asi, lineptr);
|
|
}
|
|
Curl_dyn_free(&buf); /* free the line buffer */
|
|
fclose(fp);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Write this single altsvc entry to a single output line
|
|
*/
|
|
|
|
static CURLcode altsvc_out(struct altsvc *as, FILE *fp)
|
|
{
|
|
struct tm stamp;
|
|
const char *dst6_pre = "";
|
|
const char *dst6_post = "";
|
|
const char *src6_pre = "";
|
|
const char *src6_post = "";
|
|
CURLcode result = Curl_gmtime(as->expires, &stamp);
|
|
if(result)
|
|
return result;
|
|
#ifdef USE_IPV6
|
|
else {
|
|
char ipv6_unused[16];
|
|
if(1 == curlx_inet_pton(AF_INET6, as->dst.host, ipv6_unused)) {
|
|
dst6_pre = "[";
|
|
dst6_post = "]";
|
|
}
|
|
if(1 == curlx_inet_pton(AF_INET6, as->src.host, ipv6_unused)) {
|
|
src6_pre = "[";
|
|
src6_post = "]";
|
|
}
|
|
}
|
|
#endif
|
|
fprintf(fp,
|
|
"%s %s%s%s %u "
|
|
"%s %s%s%s %u "
|
|
"\"%d%02d%02d "
|
|
"%02d:%02d:%02d\" "
|
|
"%u %u\n",
|
|
Curl_alpnid2str(as->src.alpnid),
|
|
src6_pre, as->src.host, src6_post,
|
|
as->src.port,
|
|
|
|
Curl_alpnid2str(as->dst.alpnid),
|
|
dst6_pre, as->dst.host, dst6_post,
|
|
as->dst.port,
|
|
|
|
stamp.tm_year + 1900, stamp.tm_mon + 1, stamp.tm_mday,
|
|
stamp.tm_hour, stamp.tm_min, stamp.tm_sec,
|
|
as->persist, as->prio);
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/* ---- library-wide functions below ---- */
|
|
|
|
/*
|
|
* Curl_altsvc_init() creates a new altsvc cache.
|
|
* It returns the new instance or NULL if something goes wrong.
|
|
*/
|
|
struct altsvcinfo *Curl_altsvc_init(void)
|
|
{
|
|
struct altsvcinfo *asi = calloc(1, sizeof(struct altsvcinfo));
|
|
if(!asi)
|
|
return NULL;
|
|
Curl_llist_init(&asi->list, NULL);
|
|
|
|
/* set default behavior */
|
|
asi->flags = CURLALTSVC_H1
|
|
#ifdef USE_HTTP2
|
|
| CURLALTSVC_H2
|
|
#endif
|
|
#ifdef USE_HTTP3
|
|
| CURLALTSVC_H3
|
|
#endif
|
|
;
|
|
return asi;
|
|
}
|
|
|
|
/*
|
|
* Curl_altsvc_load() loads alt-svc from file.
|
|
*/
|
|
CURLcode Curl_altsvc_load(struct altsvcinfo *asi, const char *file)
|
|
{
|
|
DEBUGASSERT(asi);
|
|
return altsvc_load(asi, file);
|
|
}
|
|
|
|
/*
|
|
* Curl_altsvc_ctrl() passes on the external bitmask.
|
|
*/
|
|
CURLcode Curl_altsvc_ctrl(struct altsvcinfo *asi, const long ctrl)
|
|
{
|
|
DEBUGASSERT(asi);
|
|
asi->flags = ctrl;
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* Curl_altsvc_cleanup() frees an altsvc cache instance and all associated
|
|
* resources.
|
|
*/
|
|
void Curl_altsvc_cleanup(struct altsvcinfo **altsvcp)
|
|
{
|
|
if(*altsvcp) {
|
|
struct Curl_llist_node *e;
|
|
struct Curl_llist_node *n;
|
|
struct altsvcinfo *altsvc = *altsvcp;
|
|
for(e = Curl_llist_head(&altsvc->list); e; e = n) {
|
|
struct altsvc *as = Curl_node_elem(e);
|
|
n = Curl_node_next(e);
|
|
altsvc_free(as);
|
|
}
|
|
free(altsvc->filename);
|
|
free(altsvc);
|
|
*altsvcp = NULL; /* clear the pointer */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Curl_altsvc_save() writes the altsvc cache to a file.
|
|
*/
|
|
CURLcode Curl_altsvc_save(struct Curl_easy *data,
|
|
struct altsvcinfo *altsvc, const char *file)
|
|
{
|
|
CURLcode result = CURLE_OK;
|
|
FILE *out;
|
|
char *tempstore = NULL;
|
|
|
|
if(!altsvc)
|
|
/* no cache activated */
|
|
return CURLE_OK;
|
|
|
|
/* if not new name is given, use the one we stored from the load */
|
|
if(!file && altsvc->filename)
|
|
file = altsvc->filename;
|
|
|
|
if((altsvc->flags & CURLALTSVC_READONLYFILE) || !file || !file[0])
|
|
/* marked as read-only, no file or zero length filename */
|
|
return CURLE_OK;
|
|
|
|
result = Curl_fopen(data, file, &out, &tempstore);
|
|
if(!result) {
|
|
struct Curl_llist_node *e;
|
|
struct Curl_llist_node *n;
|
|
fputs("# Your alt-svc cache. https://curl.se/docs/alt-svc.html\n"
|
|
"# This file was generated by libcurl! Edit at your own risk.\n",
|
|
out);
|
|
for(e = Curl_llist_head(&altsvc->list); e; e = n) {
|
|
struct altsvc *as = Curl_node_elem(e);
|
|
n = Curl_node_next(e);
|
|
result = altsvc_out(as, out);
|
|
if(result)
|
|
break;
|
|
}
|
|
fclose(out);
|
|
if(!result && tempstore && Curl_rename(tempstore, file))
|
|
result = CURLE_WRITE_ERROR;
|
|
|
|
if(result && tempstore)
|
|
unlink(tempstore);
|
|
}
|
|
free(tempstore);
|
|
return result;
|
|
}
|
|
|
|
/* hostcompare() returns true if 'host' matches 'check'. The first host
|
|
* argument may have a trailing dot present that will be ignored.
|
|
*/
|
|
static bool hostcompare(const char *host, const char *check)
|
|
{
|
|
size_t hlen = strlen(host);
|
|
size_t clen = strlen(check);
|
|
|
|
if(hlen && (host[hlen - 1] == '.'))
|
|
hlen--;
|
|
if(hlen != clen)
|
|
/* they cannot match if they have different lengths */
|
|
return FALSE;
|
|
return strncasecompare(host, check, hlen);
|
|
}
|
|
|
|
/* altsvc_flush() removes all alternatives for this source origin from the
|
|
list */
|
|
static void altsvc_flush(struct altsvcinfo *asi, enum alpnid srcalpnid,
|
|
const char *srchost, unsigned short srcport)
|
|
{
|
|
struct Curl_llist_node *e;
|
|
struct Curl_llist_node *n;
|
|
for(e = Curl_llist_head(&asi->list); e; e = n) {
|
|
struct altsvc *as = Curl_node_elem(e);
|
|
n = Curl_node_next(e);
|
|
if((srcalpnid == as->src.alpnid) &&
|
|
(srcport == as->src.port) &&
|
|
hostcompare(srchost, as->src.host)) {
|
|
Curl_node_remove(e);
|
|
altsvc_free(as);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUGBUILD
|
|
/* to play well with debug builds, we can *set* a fixed time this will
|
|
return */
|
|
static time_t altsvc_debugtime(void *unused)
|
|
{
|
|
const char *timestr = getenv("CURL_TIME");
|
|
(void)unused;
|
|
if(timestr) {
|
|
curl_off_t val;
|
|
Curl_str_number(×tr, &val, TIME_T_MAX);
|
|
return (time_t)val;
|
|
}
|
|
return time(NULL);
|
|
}
|
|
#undef time
|
|
#define time(x) altsvc_debugtime(x)
|
|
#endif
|
|
|
|
/*
|
|
* Curl_altsvc_parse() takes an incoming alt-svc response header and stores
|
|
* the data correctly in the cache.
|
|
*
|
|
* 'value' points to the header *value*. That is contents to the right of the
|
|
* header name.
|
|
*
|
|
* Currently this function rejects invalid data without returning an error.
|
|
* Invalid hostname, port number will result in the specific alternative
|
|
* being rejected. Unknown protocols are skipped.
|
|
*/
|
|
CURLcode Curl_altsvc_parse(struct Curl_easy *data,
|
|
struct altsvcinfo *asi, const char *value,
|
|
enum alpnid srcalpnid, const char *srchost,
|
|
unsigned short srcport)
|
|
{
|
|
const char *p = value;
|
|
struct altsvc *as;
|
|
unsigned short dstport = srcport; /* the same by default */
|
|
size_t entries = 0;
|
|
struct Curl_str alpn;
|
|
const char *sp;
|
|
time_t maxage = 24 * 3600; /* default is 24 hours */
|
|
bool persist = FALSE;
|
|
#ifdef CURL_DISABLE_VERBOSE_STRINGS
|
|
(void)data;
|
|
#endif
|
|
|
|
DEBUGASSERT(asi);
|
|
|
|
/* initial check for "clear" */
|
|
if(!Curl_str_until(&p, &alpn, MAX_ALTSVC_LINE, ';') &&
|
|
!Curl_str_single(&p, ';')) {
|
|
Curl_str_trimblanks(&alpn);
|
|
/* "clear" is a magic keyword */
|
|
if(Curl_str_casecompare(&alpn, "clear")) {
|
|
/* Flush cached alternatives for this source origin */
|
|
altsvc_flush(asi, srcalpnid, srchost, srcport);
|
|
return CURLE_OK;
|
|
}
|
|
}
|
|
|
|
p = value;
|
|
|
|
if(Curl_str_until(&p, &alpn, MAX_ALTSVC_LINE, '='))
|
|
return CURLE_OK; /* strange line */
|
|
|
|
Curl_str_trimblanks(&alpn);
|
|
|
|
/* Handle the optional 'ma' and 'persist' flags once first, as they need to
|
|
be known for each alternative service. Unknown flags are skipped. */
|
|
sp = strchr(p, ';');
|
|
if(sp) {
|
|
sp++; /* pass the semicolon */
|
|
for(;;) {
|
|
struct Curl_str name;
|
|
struct Curl_str val;
|
|
const char *vp;
|
|
curl_off_t num;
|
|
bool quoted;
|
|
/* allow some extra whitespaces around name and value */
|
|
if(Curl_str_until(&sp, &name, 20, '=') ||
|
|
Curl_str_single(&sp, '=') ||
|
|
Curl_str_until(&sp, &val, 80, ';'))
|
|
break;
|
|
Curl_str_trimblanks(&name);
|
|
Curl_str_trimblanks(&val);
|
|
/* the value might be quoted */
|
|
vp = Curl_str(&val);
|
|
quoted = (*vp == '\"');
|
|
if(quoted)
|
|
vp++;
|
|
if(!Curl_str_number(&vp, &num, TIME_T_MAX)) {
|
|
if(Curl_str_casecompare(&name, "ma"))
|
|
maxage = (time_t)num;
|
|
else if(Curl_str_casecompare(&name, "persist") && (num == 1))
|
|
persist = TRUE;
|
|
}
|
|
if(quoted && Curl_str_single(&sp, '\"'))
|
|
break;
|
|
if(Curl_str_single(&sp, ';'))
|
|
break;
|
|
}
|
|
}
|
|
|
|
do {
|
|
if(!Curl_str_single(&p, '=')) {
|
|
/* [protocol]="[host][:port], [protocol]="[host][:port]" */
|
|
enum alpnid dstalpnid =
|
|
Curl_alpn2alpnid(Curl_str(&alpn), Curl_strlen(&alpn));
|
|
if(!Curl_str_single(&p, '\"')) {
|
|
struct Curl_str dsthost;
|
|
curl_off_t port = 0;
|
|
if(Curl_str_single(&p, ':')) {
|
|
/* hostname starts here */
|
|
if(Curl_str_single(&p, '[')) {
|
|
if(Curl_str_until(&p, &dsthost, MAX_ALTSVC_HOSTLEN, ':')) {
|
|
infof(data, "Bad alt-svc hostname, ignoring.");
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
/* IPv6 host name */
|
|
if(Curl_str_until(&p, &dsthost, MAX_IPADR_LEN, ']') ||
|
|
Curl_str_single(&p, ']')) {
|
|
infof(data, "Bad alt-svc IPv6 hostname, ignoring.");
|
|
break;
|
|
}
|
|
}
|
|
if(Curl_str_single(&p, ':'))
|
|
break;
|
|
}
|
|
else
|
|
/* no destination name, use source host */
|
|
Curl_str_assign(&dsthost, srchost, strlen(srchost));
|
|
|
|
if(Curl_str_number(&p, &port, 0xffff)) {
|
|
infof(data, "Unknown alt-svc port number, ignoring.");
|
|
break;
|
|
}
|
|
|
|
dstport = (unsigned short)port;
|
|
|
|
if(Curl_str_single(&p, '\"'))
|
|
break;
|
|
|
|
if(dstalpnid) {
|
|
if(!entries++)
|
|
/* Flush cached alternatives for this source origin, if any - when
|
|
this is the first entry of the line. */
|
|
altsvc_flush(asi, srcalpnid, srchost, srcport);
|
|
|
|
as = altsvc_createid(srchost, strlen(srchost),
|
|
Curl_str(&dsthost),
|
|
Curl_strlen(&dsthost),
|
|
srcalpnid, dstalpnid,
|
|
srcport, dstport);
|
|
if(as) {
|
|
time_t secs = time(NULL);
|
|
/* The expires time also needs to take the Age: value (if any)
|
|
into account. [See RFC 7838 section 3.1] */
|
|
if(maxage > (TIME_T_MAX - secs))
|
|
as->expires = TIME_T_MAX;
|
|
else
|
|
as->expires = maxage + secs;
|
|
as->persist = persist;
|
|
Curl_llist_append(&asi->list, as, &as->node);
|
|
infof(data, "Added alt-svc: %.*s:%d over %s",
|
|
(int)Curl_strlen(&dsthost), Curl_str(&dsthost),
|
|
dstport, Curl_alpnid2str(dstalpnid));
|
|
}
|
|
}
|
|
}
|
|
else
|
|
break;
|
|
|
|
/* after the double quote there can be a comma if there is another
|
|
string or a semicolon if no more */
|
|
if(Curl_str_single(&p, ','))
|
|
break;
|
|
|
|
/* comma means another alternative is present */
|
|
if(Curl_str_until(&p, &alpn, MAX_ALTSVC_LINE, '='))
|
|
break;
|
|
Curl_str_trimblanks(&alpn);
|
|
}
|
|
else
|
|
break;
|
|
} while(1);
|
|
|
|
return CURLE_OK;
|
|
}
|
|
|
|
/*
|
|
* Return TRUE on a match
|
|
*/
|
|
bool Curl_altsvc_lookup(struct altsvcinfo *asi,
|
|
enum alpnid srcalpnid, const char *srchost,
|
|
int srcport,
|
|
struct altsvc **dstentry,
|
|
const int versions) /* one or more bits */
|
|
{
|
|
struct Curl_llist_node *e;
|
|
struct Curl_llist_node *n;
|
|
time_t now = time(NULL);
|
|
DEBUGASSERT(asi);
|
|
DEBUGASSERT(srchost);
|
|
DEBUGASSERT(dstentry);
|
|
|
|
for(e = Curl_llist_head(&asi->list); e; e = n) {
|
|
struct altsvc *as = Curl_node_elem(e);
|
|
n = Curl_node_next(e);
|
|
if(as->expires < now) {
|
|
/* an expired entry, remove */
|
|
Curl_node_remove(e);
|
|
altsvc_free(as);
|
|
continue;
|
|
}
|
|
if((as->src.alpnid == srcalpnid) &&
|
|
hostcompare(srchost, as->src.host) &&
|
|
(as->src.port == srcport) &&
|
|
(versions & (int)as->dst.alpnid)) {
|
|
/* match */
|
|
*dstentry = as;
|
|
return TRUE;
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
#endif /* !CURL_DISABLE_HTTP && !CURL_DISABLE_ALTSVC */
|