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Bump uclient version 2016-12-09

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This commit is contained in:
jbnadal
2017-03-20 18:30:48 +01:00
parent 5fc3e0c439
commit bd8184c724
13 changed files with 3061 additions and 0 deletions
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9
src/3P/uclient/.gitignore vendored Normal file
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Makefile
CMakeCache.txt
CMakeFiles
*.cmake
*.a
*.so
*.dylib
install_manifest.txt
uclient-fetch

25
src/3P/uclient/CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 2.6)
INCLUDE(CheckIncludeFiles)
PROJECT(uclient C)
ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -g3 -Wmissing-declarations)
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
FIND_PATH(ubox_include_dir libubox/ustream-ssl.h)
INCLUDE_DIRECTORIES(${ubox_include_dir})
ADD_LIBRARY(uclient SHARED uclient.c uclient-http.c uclient-utils.c)
TARGET_LINK_LIBRARIES(uclient ubox dl)
ADD_EXECUTABLE(uclient-fetch uclient-fetch.c progress.c)
TARGET_LINK_LIBRARIES(uclient-fetch uclient)
INSTALL(FILES uclient.h uclient-utils.h
DESTINATION include/libubox
)
INSTALL(TARGETS uclient uclient-fetch
LIBRARY DESTINATION lib
RUNTIME DESTINATION bin
)

229
src/3P/uclient/progress.c Normal file
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/* vi: set sw=4 ts=4: */
/*
* Progress bar code.
*/
/* Original copyright notice which applies to the CONFIG_FEATURE_WGET_STATUSBAR stuff,
* much of which was blatantly stolen from openssh.
*/
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. BSD Advertising Clause omitted per the July 22, 1999 licensing change
* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
*
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <libubox/utils.h>
#include "progress.h"
enum {
/* Seconds when xfer considered "stalled" */
STALLTIME = 5
};
static int
wh_helper(int value, int def_val, const char *env_name)
{
if (value == 0) {
char *s = getenv(env_name);
if (s)
value = atoi(s);
}
if (value <= 1 || value >= 30000)
value = def_val;
return value;
}
static unsigned int
get_tty2_width(void)
{
#ifndef TIOCGWINSZ
return wh_helper(0, 80, "COLUMNS");
#else
struct winsize win = {0};
ioctl(2, TIOCGWINSZ, &win);
return wh_helper(win.ws_col, 80, "COLUMNS");
#endif
}
static unsigned int
monotonic_sec(void)
{
struct timespec tv;
clock_gettime(CLOCK_MONOTONIC, &tv);
return tv.tv_sec;
}
void
progress_init(struct progress *p, const char *curfile)
{
p->curfile = strdup(curfile);
p->start_sec = monotonic_sec();
p->last_update_sec = p->start_sec;
p->last_change_sec = p->start_sec;
p->last_size = 0;
}
/* File already had beg_size bytes.
* Then we started downloading.
* We downloaded "transferred" bytes so far.
* Download is expected to stop when total size (beg_size + transferred)
* will be "totalsize" bytes.
* If totalsize == 0, then it is unknown.
*/
void
progress_update(struct progress *p, off_t beg_size,
off_t transferred, off_t totalsize)
{
off_t beg_and_transferred;
unsigned since_last_update, elapsed;
int barlength;
int kiloscale;
//transferred = 1234; /* use for stall detection testing */
//totalsize = 0; /* use for unknown size download testing */
elapsed = monotonic_sec();
since_last_update = elapsed - p->last_update_sec;
p->last_update_sec = elapsed;
if (totalsize != 0 && transferred >= totalsize - beg_size) {
/* Last call. Do not skip this update */
transferred = totalsize - beg_size; /* sanitize just in case */
}
else if (since_last_update == 0) {
/*
* Do not update on every call
* (we can be called on every network read!)
*/
return;
}
kiloscale = 0;
/*
* Scale sizes down if they are close to overflowing.
* This allows calculations like (100 * transferred / totalsize)
* without risking overflow: we guarantee 10 highest bits to be 0.
* Introduced error is less than 1 / 2^12 ~= 0.025%
*/
if (ULONG_MAX > 0xffffffff || sizeof(off_t) == 4 || sizeof(off_t) != 8) {
/*
* 64-bit CPU || small off_t: in either case,
* >> is cheap, single-word operation.
* ... || strange off_t: also use this code
* (it is safe, just suboptimal wrt code size),
* because 32/64 optimized one works only for 64-bit off_t.
*/
if (totalsize >= (1 << 22)) {
totalsize >>= 10;
beg_size >>= 10;
transferred >>= 10;
kiloscale = 1;
}
} else {
/* 32-bit CPU and 64-bit off_t.
* Use a 40-bit shift, it is easier to do on 32-bit CPU.
*/
/* ONE suppresses "warning: shift count >= width of type" */
#define ONE (sizeof(off_t) > 4)
if (totalsize >= (off_t)(1ULL << 54*ONE)) {
totalsize = (uint32_t)(totalsize >> 32*ONE) >> 8;
beg_size = (uint32_t)(beg_size >> 32*ONE) >> 8;
transferred = (uint32_t)(transferred >> 32*ONE) >> 8;
kiloscale = 4;
}
}
fprintf(stderr, "\r%-20.20s", p->curfile);
beg_and_transferred = beg_size + transferred;
if (totalsize != 0) {
unsigned ratio = 100 * beg_and_transferred / totalsize;
fprintf(stderr, "%4u%%", ratio);
barlength = get_tty2_width() - 49;
if (barlength > 0) {
/* god bless gcc for variable arrays :) */
char buf[barlength + 1];
unsigned stars = (unsigned)barlength * beg_and_transferred / totalsize;
memset(buf, ' ', barlength);
buf[barlength] = '\0';
memset(buf, '*', stars);
fprintf(stderr, " |%s|", buf);
}
}
while (beg_and_transferred >= 100000) {
beg_and_transferred >>= 10;
kiloscale++;
}
/* see http://en.wikipedia.org/wiki/Tera */
fprintf(stderr, "%6u%c", (unsigned)beg_and_transferred, " kMGTPEZY"[kiloscale]);
since_last_update = elapsed - p->last_change_sec;
if ((unsigned)transferred != p->last_size) {
p->last_change_sec = elapsed;
p->last_size = (unsigned)transferred;
if (since_last_update >= STALLTIME) {
/* We "cut out" these seconds from elapsed time
* by adjusting start time */
p->start_sec += since_last_update;
}
since_last_update = 0; /* we are un-stalled now */
}
elapsed -= p->start_sec; /* now it's "elapsed since start" */
if (since_last_update >= STALLTIME) {
fprintf(stderr, " - stalled -");
} else if (!totalsize || !transferred || (int)elapsed < 0) {
fprintf(stderr, " --:--:-- ETA");
} else {
unsigned eta, secs, hours;
totalsize -= beg_size; /* now it's "total to upload" */
/* Estimated remaining time =
* estimated_sec_to_dl_totalsize_bytes - elapsed_sec =
* totalsize / average_bytes_sec_so_far - elapsed =
* totalsize / (transferred/elapsed) - elapsed =
* totalsize * elapsed / transferred - elapsed
*/
eta = totalsize * elapsed / transferred - elapsed;
if (eta >= 1000*60*60)
eta = 1000*60*60 - 1;
secs = eta % 3600;
hours = eta / 3600;
fprintf(stderr, "%3u:%02u:%02u ETA", hours, secs / 60, secs % 60);
}
}

25
src/3P/uclient/progress.h Normal file
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#ifndef __PROGRESS_H
#define __PROGRESS_H
#include <sys/types.h>
struct progress {
unsigned int last_size;
unsigned int last_update_sec;
unsigned int last_change_sec;
unsigned int start_sec;
char *curfile;
};
void progress_init(struct progress *p, const char *curfile);
void progress_update(struct progress *p, off_t beg_size,
off_t transferred, off_t totalsize);
static inline void
progress_free(struct progress *p)
{
free(p->curfile);
}
#endif

45
src/3P/uclient/uclient-backend.h Normal file
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@@ -0,0 +1,45 @@
/*
* uclient - ustream based protocol client library
*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __UCLIENT_INTERNAL_H
#define __UCLIENT_INTERNAL_H
struct uclient_url;
struct uclient_backend {
const char * const * prefix;
struct uclient *(*alloc)(void);
void (*free)(struct uclient *cl);
void (*update_proxy_url)(struct uclient *cl);
void (*update_url)(struct uclient *cl);
int (*connect)(struct uclient *cl);
int (*request)(struct uclient *cl);
void (*disconnect)(struct uclient *cl);
int (*read)(struct uclient *cl, char *buf, unsigned int len);
int (*write)(struct uclient *cl, const char *buf, unsigned int len);
};
void uclient_backend_set_error(struct uclient *cl, int code);
void uclient_backend_set_eof(struct uclient *cl);
void uclient_backend_reset_state(struct uclient *cl);
struct uclient_url *uclient_get_url(const char *url_str, const char *auth_str);
struct uclient_url *uclient_get_url_location(struct uclient_url *url, const char *location);
#endif

717
src/3P/uclient/uclient-fetch.c Normal file
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@@ -0,0 +1,717 @@
/*
* uclient - ustream based protocol client library
*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define _GNU_SOURCE
#include <sys/stat.h>
#include <sys/socket.h>
#include <unistd.h>
#include <stdio.h>
#include <dlfcn.h>
#include <getopt.h>
#include <fcntl.h>
#include <glob.h>
#include <stdint.h>
#include <inttypes.h>
#include <signal.h>
#include <libubox/blobmsg.h>
#include "progress.h"
#include "uclient.h"
#include "uclient-utils.h"
#ifdef __APPLE__
#define LIB_EXT "dylib"
#else
#define LIB_EXT "so"
#endif
static const char *user_agent = "uclient-fetch";
static const char *post_data;
static struct ustream_ssl_ctx *ssl_ctx;
static const struct ustream_ssl_ops *ssl_ops;
static int quiet = false;
static bool verify = true;
static bool proxy = true;
static bool default_certs = false;
static bool no_output;
static const char *output_file;
static int output_fd = -1;
static int error_ret;
static off_t out_offset;
static off_t out_bytes;
static off_t out_len;
static char *auth_str;
static char **urls;
static int n_urls;
static int timeout;
static bool resume, cur_resume;
static struct progress pmt;
static struct uloop_timeout pmt_timer;
static int init_request(struct uclient *cl);
static void request_done(struct uclient *cl);
static void pmt_update(struct uloop_timeout *t)
{
progress_update(&pmt, out_offset, out_bytes, out_len);
uloop_timeout_set(t, 1000);
}
static const char *
get_proxy_url(char *url)
{
char prefix[16];
char *sep;
if (!proxy)
return NULL;
sep = strchr(url, ':');
if (!sep)
return NULL;
if (sep - url > 5)
return NULL;
memcpy(prefix, url, sep - url);
strcpy(prefix + (sep - url), "_proxy");
return getenv(prefix);
}
static int open_output_file(const char *path, uint64_t resume_offset)
{
char *filename = NULL;
int flags;
int ret;
if (cur_resume)
flags = O_RDWR;
else
flags = O_WRONLY | O_TRUNC;
if (!cur_resume && !output_file)
flags |= O_EXCL;
flags |= O_CREAT;
if (output_file) {
if (!strcmp(output_file, "-")) {
if (!quiet)
fprintf(stderr, "Writing to stdout\n");
ret = STDOUT_FILENO;
goto done;
}
} else {
filename = uclient_get_url_filename(path, "index.html");
output_file = filename;
}
if (!quiet)
fprintf(stderr, "Writing to '%s'\n", output_file);
ret = open(output_file, flags, 0644);
if (ret < 0)
goto free;
if (resume_offset &&
lseek(ret, resume_offset, SEEK_SET) < 0) {
if (!quiet)
fprintf(stderr, "Failed to seek %"PRIu64" bytes in output file\n", resume_offset);
close(ret);
ret = -1;
goto free;
}
out_offset = resume_offset;
out_bytes += resume_offset;
done:
if (!quiet) {
progress_init(&pmt, output_file);
pmt_timer.cb = pmt_update;
pmt_timer.cb(&pmt_timer);
}
free:
free(filename);
return ret;
}
static void header_done_cb(struct uclient *cl)
{
enum {
H_RANGE,
H_LEN,
__H_MAX
};
static const struct blobmsg_policy policy[__H_MAX] = {
[H_RANGE] = { .name = "content-range", .type = BLOBMSG_TYPE_STRING },
[H_LEN] = { .name = "content-length", .type = BLOBMSG_TYPE_STRING },
};
struct blob_attr *tb[__H_MAX];
uint64_t resume_offset = 0, resume_end, resume_size;
static int retries;
if (retries < 10) {
int ret = uclient_http_redirect(cl);
if (ret < 0) {
if (!quiet)
fprintf(stderr, "Failed to redirect to %s on %s\n", cl->url->location, cl->url->host);
error_ret = 8;
request_done(cl);
return;
}
if (ret > 0) {
if (!quiet)
fprintf(stderr, "Redirected to %s on %s\n", cl->url->location, cl->url->host);
retries++;
return;
}
}
if (cl->status_code == 204 && cur_resume) {
/* Resume attempt failed, try normal download */
cur_resume = false;
init_request(cl);
return;
}
blobmsg_parse(policy, __H_MAX, tb, blob_data(cl->meta), blob_len(cl->meta));
switch (cl->status_code) {
case 416:
if (!quiet)
fprintf(stderr, "File download already fully retrieved; nothing to do.\n");
request_done(cl);
break;
case 206:
if (!cur_resume) {
if (!quiet)
fprintf(stderr, "Error: Partial content received, full content requested\n");
error_ret = 8;
request_done(cl);
break;
}
if (!tb[H_RANGE]) {
if (!quiet)
fprintf(stderr, "Content-Range header is missing\n");
error_ret = 8;
break;
}
if (sscanf(blobmsg_get_string(tb[H_RANGE]),
"bytes %"PRIu64"-%"PRIu64"/%"PRIu64,
&resume_offset, &resume_end, &resume_size) != 3) {
if (!quiet)
fprintf(stderr, "Content-Range header is invalid\n");
error_ret = 8;
break;
}
case 204:
case 200:
if (no_output)
break;
if (tb[H_LEN])
out_len = strtoul(blobmsg_get_string(tb[H_LEN]), NULL, 10);
output_fd = open_output_file(cl->url->location, resume_offset);
if (output_fd < 0) {
if (!quiet)
perror("Cannot open output file");
error_ret = 3;
request_done(cl);
}
break;
default:
if (!quiet)
fprintf(stderr, "HTTP error %d\n", cl->status_code);
request_done(cl);
error_ret = 8;
break;
}
}
static void read_data_cb(struct uclient *cl)
{
char buf[256];
ssize_t n;
int len;
if (!no_output && output_fd < 0)
return;
while (1) {
len = uclient_read(cl, buf, sizeof(buf));
if (!len)
return;
out_bytes += len;
if (!no_output) {
n = write(output_fd, buf, len);
if (n < 0)
return;
}
}
}
static void msg_connecting(struct uclient *cl)
{
char addr[INET6_ADDRSTRLEN];
int port;
if (quiet)
return;
uclient_get_addr(addr, &port, &cl->remote_addr);
fprintf(stderr, "Connecting to %s:%d\n", addr, port);
}
static void check_resume_offset(struct uclient *cl)
{
char range_str[64];
struct stat st;
char *file;
int ret;
file = uclient_get_url_filename(cl->url->location, "index.html");
if (!file)
return;
ret = stat(file, &st);
free(file);
if (ret)
return;
if (!st.st_size)
return;
snprintf(range_str, sizeof(range_str), "bytes=%"PRIu64"-", (uint64_t) st.st_size);
uclient_http_set_header(cl, "Range", range_str);
}
static int init_request(struct uclient *cl)
{
int rc;
out_offset = 0;
out_bytes = 0;
out_len = 0;
uclient_http_set_ssl_ctx(cl, ssl_ops, ssl_ctx, verify);
if (timeout)
cl->timeout_msecs = timeout * 1000;
rc = uclient_connect(cl);
if (rc)
return rc;
msg_connecting(cl);
rc = uclient_http_set_request_type(cl, post_data ? "POST" : "GET");
if (rc)
return rc;
uclient_http_reset_headers(cl);
uclient_http_set_header(cl, "User-Agent", user_agent);
if (cur_resume)
check_resume_offset(cl);
if (post_data) {
uclient_http_set_header(cl, "Content-Type", "application/x-www-form-urlencoded");
uclient_write(cl, post_data, strlen(post_data));
}
rc = uclient_request(cl);
if (rc)
return rc;
return 0;
}
static void request_done(struct uclient *cl)
{
const char *proxy_url;
if (n_urls) {
proxy_url = get_proxy_url(*urls);
if (proxy_url) {
uclient_set_url(cl, proxy_url, NULL);
uclient_set_proxy_url(cl, *urls, auth_str);
} else {
uclient_set_url(cl, *urls, auth_str);
}
n_urls--;
cur_resume = resume;
error_ret = init_request(cl);
if (error_ret == 0)
return;
}
if (output_fd >= 0 && !output_file) {
close(output_fd);
output_fd = -1;
}
uclient_disconnect(cl);
uloop_end();
}
static void eof_cb(struct uclient *cl)
{
if (!quiet) {
pmt_update(&pmt_timer);
uloop_timeout_cancel(&pmt_timer);
fprintf(stderr, "\n");
}
if (!cl->data_eof) {
if (!quiet)
fprintf(stderr, "Connection reset prematurely\n");
error_ret = 4;
} else if (!quiet) {
fprintf(stderr, "Download completed (%"PRIu64" bytes)\n", (uint64_t) out_bytes);
}
request_done(cl);
}
static void handle_uclient_error(struct uclient *cl, int code)
{
const char *type = "Unknown error";
bool ignore = false;
switch(code) {
case UCLIENT_ERROR_CONNECT:
type = "Connection failed";
error_ret = 4;
break;
case UCLIENT_ERROR_TIMEDOUT:
type = "Connection timed out";
error_ret = 4;
break;
case UCLIENT_ERROR_SSL_INVALID_CERT:
type = "Invalid SSL certificate";
ignore = !verify;
error_ret = 5;
break;
case UCLIENT_ERROR_SSL_CN_MISMATCH:
type = "Server hostname does not match SSL certificate";
ignore = !verify;
error_ret = 5;
break;
default:
error_ret = 1;
break;
}
if (!quiet)
fprintf(stderr, "Connection error: %s%s\n", type, ignore ? " (ignored)" : "");
if (ignore)
error_ret = 0;
else
request_done(cl);
}
static const struct uclient_cb cb = {
.header_done = header_done_cb,
.data_read = read_data_cb,
.data_eof = eof_cb,
.error = handle_uclient_error,
};
static int usage(const char *progname)
{
fprintf(stderr,
"Usage: %s [options] <URL>\n"
"Options:\n"
" -4 Use IPv4 only\n"
" -6 Use IPv6 only\n"
" -q Turn off status messages\n"
" -O <file> Redirect output to file (use \"-\" for stdout)\n"
" -P <dir> Set directory for output files\n"
" --user=<user> HTTP authentication username\n"
" --password=<password> HTTP authentication password\n"
" --user-agent|-U <str> Set HTTP user agent\n"
" --post-data=STRING use the POST method; send STRING as the data\n"
" --spider|-s Spider mode - only check file existence\n"
" --timeout=N|-T N Set connect/request timeout to N seconds\n"
" --proxy=on|off|-Y on|off Enable/disable env var configured proxy\n"
"\n"
"HTTPS options:\n"
" --ca-certificate=<cert> Load CA certificates from file <cert>\n"
" --no-check-certificate don't validate the server's certificate\n"
"\n", progname);
return 1;
}
static void init_ca_cert(void)
{
glob_t gl;
int i;
glob("/etc/ssl/certs/*.crt", 0, NULL, &gl);
for (i = 0; i < gl.gl_pathc; i++)
ssl_ops->context_add_ca_crt_file(ssl_ctx, gl.gl_pathv[i]);
}
static void init_ustream_ssl(void)
{
void *dlh;
dlh = dlopen("libustream-ssl." LIB_EXT, RTLD_LAZY | RTLD_LOCAL);
if (!dlh)
return;
ssl_ops = dlsym(dlh, "ustream_ssl_ops");
if (!ssl_ops)
return;
ssl_ctx = ssl_ops->context_new(false);
}
static int no_ssl(const char *progname)
{
fprintf(stderr,
"%s: SSL support not available, please install one of the "
"libustream-ssl-* libraries as well as the ca-bundle and "
"ca-certificates packages.\n",
progname);
return 1;
}
enum {
L_NO_CHECK_CERTIFICATE,
L_CA_CERTIFICATE,
L_USER,
L_PASSWORD,
L_USER_AGENT,
L_POST_DATA,
L_SPIDER,
L_TIMEOUT,
L_CONTINUE,
L_PROXY,
L_NO_PROXY,
L_QUIET,
};
static const struct option longopts[] = {
[L_NO_CHECK_CERTIFICATE] = { "no-check-certificate", no_argument },
[L_CA_CERTIFICATE] = { "ca-certificate", required_argument },
[L_USER] = { "user", required_argument },
[L_PASSWORD] = { "password", required_argument },
[L_USER_AGENT] = { "user-agent", required_argument },
[L_POST_DATA] = { "post-data", required_argument },
[L_SPIDER] = { "spider", no_argument },
[L_TIMEOUT] = { "timeout", required_argument },
[L_CONTINUE] = { "continue", no_argument },
[L_PROXY] = { "proxy", required_argument },
[L_NO_PROXY] = { "no-proxy", no_argument },
[L_QUIET] = { "quiet", no_argument },
{}
};
int main(int argc, char **argv)
{
const char *progname = argv[0];
const char *proxy_url;
char *username = NULL;
char *password = NULL;
struct uclient *cl;
int longopt_idx = 0;
bool has_cert = false;
int i, ch;
int rc;
int af = -1;
signal(SIGPIPE, SIG_IGN);
init_ustream_ssl();
while ((ch = getopt_long(argc, argv, "46cO:P:qsT:U:Y:", longopts, &longopt_idx)) != -1) {
switch(ch) {
case 0:
switch (longopt_idx) {
case L_NO_CHECK_CERTIFICATE:
verify = false;
break;
case L_CA_CERTIFICATE:
has_cert = true;
if (ssl_ctx)
ssl_ops->context_add_ca_crt_file(ssl_ctx, optarg);
break;
case L_USER:
if (!strlen(optarg))
break;
username = strdup(optarg);
memset(optarg, '*', strlen(optarg));
break;
case L_PASSWORD:
if (!strlen(optarg))
break;
password = strdup(optarg);
memset(optarg, '*', strlen(optarg));
break;
case L_USER_AGENT:
user_agent = optarg;
break;
case L_POST_DATA:
post_data = optarg;
break;
case L_SPIDER:
no_output = true;
break;
case L_TIMEOUT:
timeout = atoi(optarg);
break;
case L_CONTINUE:
resume = true;
break;
case L_PROXY:
if (strcmp(optarg, "on") != 0)
proxy = false;
break;
case L_NO_PROXY:
proxy = false;
break;
case L_QUIET:
quiet = true;
break;
default:
return usage(progname);
}
break;
case '4':
af = AF_INET;
break;
case '6':
af = AF_INET6;
break;
case 'c':
resume = true;
break;
case 'U':
user_agent = optarg;
break;
case 'O':
output_file = optarg;
break;
case 'P':
if (chdir(optarg)) {
if (!quiet)
perror("Change output directory");
exit(1);
}
break;
case 'q':
quiet = true;
break;
case 's':
no_output = true;
break;
case 'T':
timeout = atoi(optarg);
break;
case 'Y':
if (strcmp(optarg, "on") != 0)
proxy = false;
break;
default:
return usage(progname);
}
}
argv += optind;
argc -= optind;
if (verify && !has_cert)
default_certs = true;
if (argc < 1)
return usage(progname);
if (!ssl_ctx) {
for (i = 0; i < argc; i++) {
if (!strncmp(argv[i], "https", 5))
return no_ssl(progname);
}
}
urls = argv + 1;
n_urls = argc - 1;
uloop_init();
if (username) {
if (password) {
rc = asprintf(&auth_str, "%s:%s", username, password);
if (rc < 0)
return rc;
} else
auth_str = username;
}
if (!quiet)
fprintf(stderr, "Downloading '%s'\n", argv[0]);
proxy_url = get_proxy_url(argv[0]);
if (proxy_url) {
cl = uclient_new(proxy_url, auth_str, &cb);
if (cl)
uclient_set_proxy_url(cl, argv[0], NULL);
} else {
cl = uclient_new(argv[0], auth_str, &cb);
}
if (!cl) {
fprintf(stderr, "Failed to allocate uclient context\n");
return 1;
}
if (af >= 0)
uclient_http_set_address_family(cl, af);
if (ssl_ctx && default_certs)
init_ca_cert();
cur_resume = resume;
rc = init_request(cl);
if (!rc) {
/* no error received, we can enter main loop */
uloop_run();
} else {
fprintf(stderr, "Failed to establish connection\n");
error_ret = 4;
}
uloop_done();
uclient_free(cl);
if (output_fd >= 0 && output_fd != STDOUT_FILENO)
close(output_fd);
if (ssl_ctx)
ssl_ops->context_free(ssl_ctx);
return error_ret;
}

1189
src/3P/uclient/uclient-http.c Normal file
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184
src/3P/uclient/uclient-utils.c Normal file
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/*
* uclient - ustream based protocol client library
*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <libubox/md5.h>
#include <libubox/utils.h>
#include "uclient-utils.h"
static const char *b64 =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
void base64_encode(const void *inbuf, unsigned int len, void *outbuf)
{
unsigned char *out = outbuf;
const uint8_t *in = inbuf;
unsigned int i;
int pad = len % 3;
for (i = 0; i < len - pad; i += 3) {
uint32_t in3 = (in[0] << 16) | (in[1] << 8) | in[2];
int k;
for (k = 3; k >= 0; k--) {
out[k] = b64[in3 & 0x3f];
in3 >>= 6;
}
in += 3;
out += 4;
}
if (pad) {
uint32_t in2 = in[0] << (16 - 6);
out[3] = '=';
if (pad > 1) {
in2 |= in[1] << (8 - 6);
out[2] = b64[in2 & 0x3f];
} else {
out[2] = '=';
}
in2 >>= 6;
out[1] = b64[in2 & 0x3f];
in2 >>= 6;
out[0] = b64[in2 & 0x3f];
out += 4;
}
*out = '\0';
}
int uclient_urldecode(const char *in, char *out, bool decode_plus)
{
static char dec[3];
int ret = 0;
char c;
while ((c = *(in++))) {
if (c == '%') {
if (!isxdigit(in[0]) || !isxdigit(in[1]))
return -1;
dec[0] = in[0];
dec[1] = in[1];
c = strtol(dec, NULL, 16);
in += 2;
} else if (decode_plus && c == '+') {
c = ' ';
}
*(out++) = c;
ret++;
}
*out = 0;
return ret;
}
static char hex_digit(char val)
{
val += val > 9 ? 'a' - 10 : '0';
return val;
}
void bin_to_hex(char *dest, const void *buf, int len)
{
const uint8_t *data = buf;
int i;
for (i = 0; i < len; i++) {
*(dest++) = hex_digit(data[i] >> 4);
*(dest++) = hex_digit(data[i] & 0xf);
}
*dest = 0;
}
static void http_create_hash(char *dest, const char * const * str, int n_str)
{
uint32_t hash[4];
md5_ctx_t md5;
int i;
md5_begin(&md5);
for (i = 0; i < n_str; i++) {
if (i)
md5_hash(":", 1, &md5);
md5_hash(str[i], strlen(str[i]), &md5);
}
md5_end(hash, &md5);
bin_to_hex(dest, &hash, sizeof(hash));
}
void http_digest_calculate_auth_hash(char *dest, const char *user, const char *realm, const char *password)
{
const char *hash_str[] = {
user,
realm,
password
};
http_create_hash(dest, hash_str, ARRAY_SIZE(hash_str));
}
void http_digest_calculate_response(char *dest, const struct http_digest_data *data)
{
const char *h_a2_strings[] = {
data->method,
data->uri,
};
const char *resp_strings[] = {
data->auth_hash,
data->nonce,
data->nc,
data->cnonce,
data->qop,
dest, /* initialized to H(A2) first */
};
http_create_hash(dest, h_a2_strings, ARRAY_SIZE(h_a2_strings));
http_create_hash(dest, resp_strings, ARRAY_SIZE(resp_strings));
}
char *uclient_get_url_filename(const char *url, const char *default_name)
{
const char *str;
int len = strcspn(url, ";&");
while (len > 0 && url[len - 1] == '/')
len--;
for (str = url + len - 1; str >= url; str--) {
if (*str == '/')
break;
}
str++;
len -= str - url;
if (len > 0)
return strncpy(calloc(1, len + 1), str, len);
return strdup(default_name);
}

49
src/3P/uclient/uclient-utils.h Normal file
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@@ -0,0 +1,49 @@
/*
* uclient - ustream based protocol client library
*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __UCLIENT_UTILS_H
#define __UCLIENT_UTILS_H
#include <stdbool.h>
struct http_digest_data {
const char *uri;
const char *method;
const char *auth_hash; /* H(A1) */
const char *qop;
const char *nc;
const char *nonce;
const char *cnonce;
};
static inline int base64_len(int len)
{
return ((len + 2) / 3) * 4;
}
void base64_encode(const void *inbuf, unsigned int len, void *out);
void bin_to_hex(char *dest, const void *buf, int len);
int uclient_urldecode(const char *in, char *out, bool decode_plus);
void http_digest_calculate_auth_hash(char *dest, const char *user, const char *realm, const char *password);
void http_digest_calculate_response(char *dest, const struct http_digest_data *data);
char *uclient_get_url_filename(const char *url, const char *default_name);
#endif

421
src/3P/uclient/uclient.c Normal file
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/*
* uclient - ustream based protocol client library
*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <arpa/inet.h>
#include <libubox/ustream-ssl.h>
#include "uclient.h"
#include "uclient-utils.h"
#include "uclient-backend.h"
char *uclient_get_addr(char *dest, int *port, union uclient_addr *a)
{
int portval;
void *ptr;
switch(a->sa.sa_family) {
case AF_INET:
ptr = &a->sin.sin_addr;
portval = a->sin.sin_port;
break;
case AF_INET6:
ptr = &a->sin6.sin6_addr;
portval = a->sin6.sin6_port;
break;
default:
return strcpy(dest, "Unknown");
}
inet_ntop(a->sa.sa_family, ptr, dest, INET6_ADDRSTRLEN);
if (port)
*port = ntohs(portval);
return dest;
}
static struct uclient_url *
__uclient_get_url(const struct uclient_backend *backend,
const char *host, int host_len,
const char *location, const char *auth_str)
{
struct uclient_url *url;
char *host_buf, *uri_buf, *auth_buf, *next;
url = calloc_a(sizeof(*url),
&host_buf, host_len + 1,
&uri_buf, strlen(location) + 1,
&auth_buf, auth_str ? strlen(auth_str) + 1 : 0);
url->backend = backend;
url->location = strcpy(uri_buf, location);
if (host)
url->host = strncpy(host_buf, host, host_len);
next = strchr(host_buf, '@');
if (next) {
*next = 0;
url->host = next + 1;
if (uclient_urldecode(host_buf, host_buf, false) < 0)
goto free;
url->auth = host_buf;
}
if (!url->auth && auth_str)
url->auth = strcpy(auth_buf, auth_str);
/* Literal IPv6 address */
if (*url->host == '[') {
url->host++;
next = strrchr(url->host, ']');
if (!next)
goto free;
*(next++) = 0;
if (*next == ':')
url->port = next + 1;
} else {
next = strrchr(url->host, ':');
if (next) {
*next = 0;
url->port = next + 1;
}
}
return url;
free:
free(url);
return NULL;
}
static const char *
uclient_split_host(const char *base, int *host_len)
{
char *next, *location;
next = strchr(base, '/');
if (next) {
location = next;
*host_len = next - base;
} else {
location = "/";
*host_len = strlen(base);
}
return location;
}
struct uclient_url __hidden *
uclient_get_url_location(struct uclient_url *url, const char *location)
{
struct uclient_url *new_url;
char *host_buf, *uri_buf, *auth_buf, *port_buf;
int host_len = strlen(url->host) + 1;
int auth_len = url->auth ? strlen(url->auth) + 1 : 0;
int port_len = url->port ? strlen(url->port) + 1 : 0;
int uri_len;
if (strstr(location, "://"))
return uclient_get_url(location, url->auth);
if (location[0] == '/')
uri_len = strlen(location) + 1;
else
uri_len = strlen(url->location) + strlen(location) + 2;
new_url = calloc_a(sizeof(*url),
&host_buf, host_len,
&port_buf, port_len,
&uri_buf, uri_len,
&auth_buf, auth_len);
if (!new_url)
return NULL;
new_url->backend = url->backend;
new_url->prefix = url->prefix;
new_url->host = strcpy(host_buf, url->host);
if (url->port)
new_url->port = strcpy(port_buf, url->port);
if (url->auth)
new_url->auth = strcpy(auth_buf, url->auth);
new_url->location = uri_buf;
if (location[0] == '/')
strcpy(uri_buf, location);
else {
int len = strcspn(url->location, "?#");
char *buf = uri_buf;
memcpy(buf, url->location, len);
if (buf[len - 1] != '/') {
buf[len] = '/';
len++;
}
buf += len;
strcpy(buf, location);
}
return new_url;
}
struct uclient_url __hidden *
uclient_get_url(const char *url_str, const char *auth_str)
{
static const struct uclient_backend *backends[] = {
&uclient_backend_http,
};
const struct uclient_backend *backend;
const char * const *prefix = NULL;
struct uclient_url *url;
const char *location;
int host_len;
int i;
for (i = 0; i < ARRAY_SIZE(backends); i++) {
int prefix_len = 0;
for (prefix = backends[i]->prefix; *prefix; prefix++) {
prefix_len = strlen(*prefix);
if (!strncmp(url_str, *prefix, prefix_len))
break;
}
if (!*prefix)
continue;
url_str += prefix_len;
backend = backends[i];
break;
}
if (!*prefix)
return NULL;
location = uclient_split_host(url_str, &host_len);
url = __uclient_get_url(backend, url_str, host_len, location, auth_str);
if (!url)
return NULL;
url->prefix = prefix - backend->prefix;
return url;
}
static void uclient_connection_timeout(struct uloop_timeout *timeout)
{
struct uclient *cl = container_of(timeout, struct uclient, connection_timeout);
if (cl->backend->disconnect)
cl->backend->disconnect(cl);
uclient_backend_set_error(cl, UCLIENT_ERROR_TIMEDOUT);
}
struct uclient *uclient_new(const char *url_str, const char *auth_str, const struct uclient_cb *cb)
{
struct uclient *cl;
struct uclient_url *url;
url = uclient_get_url(url_str, auth_str);
if (!url)
return NULL;
cl = url->backend->alloc();
if (!cl)
return NULL;
cl->backend = url->backend;
cl->cb = cb;
cl->url = url;
cl->timeout_msecs = UCLIENT_DEFAULT_TIMEOUT_MS;
cl->connection_timeout.cb = uclient_connection_timeout;
return cl;
}
int uclient_set_proxy_url(struct uclient *cl, const char *url_str, const char *auth_str)
{
const struct uclient_backend *backend = cl->backend;
struct uclient_url *url;
int host_len;
char *next, *host;
if (!backend->update_proxy_url)
return -1;
next = strstr(url_str, "://");
if (!next)
return -1;
host = next + 3;
uclient_split_host(host, &host_len);
url = __uclient_get_url(NULL, host, host_len, url_str, auth_str);
if (!url)
return -1;
free(cl->proxy_url);
cl->proxy_url = url;
if (backend->update_proxy_url)
backend->update_proxy_url(cl);
return 0;
}
int uclient_set_url(struct uclient *cl, const char *url_str, const char *auth_str)
{
const struct uclient_backend *backend = cl->backend;
struct uclient_url *url = cl->url;
url = uclient_get_url(url_str, auth_str);
if (!url)
return -1;
if (url->backend != cl->backend) {
free(url);
return -1;
}
free(cl->proxy_url);
cl->proxy_url = NULL;
free(cl->url);
cl->url = url;
if (backend->update_url)
backend->update_url(cl);
return 0;
}
int uclient_set_timeout(struct uclient *cl, int msecs)
{
if (msecs <= 0)
return -EINVAL;
cl->timeout_msecs = msecs;
return 0;
}
int uclient_connect(struct uclient *cl)
{
return cl->backend->connect(cl);
}
void uclient_free(struct uclient *cl)
{
struct uclient_url *url = cl->url;
if (cl->backend->free)
cl->backend->free(cl);
else
free(cl);
free(url);
}
int uclient_write(struct uclient *cl, const char *buf, int len)
{
if (!cl->backend->write)
return -1;
return cl->backend->write(cl, buf, len);
}
int uclient_request(struct uclient *cl)
{
int err;
if (!cl->backend->request)
return -1;
err = cl->backend->request(cl);
if (err)
return err;
uloop_timeout_set(&cl->connection_timeout, cl->timeout_msecs);
return 0;
}
int uclient_read(struct uclient *cl, char *buf, int len)
{
if (!cl->backend->read)
return -1;
return cl->backend->read(cl, buf, len);
}
void uclient_disconnect(struct uclient *cl)
{
uloop_timeout_cancel(&cl->connection_timeout);
if (!cl->backend->disconnect)
return;
cl->backend->disconnect(cl);
}
static void __uclient_backend_change_state(struct uloop_timeout *timeout)
{
struct uclient *cl = container_of(timeout, struct uclient, timeout);
if (cl->error_code && cl->cb->error)
cl->cb->error(cl, cl->error_code);
else if (cl->eof && cl->cb->data_eof)
cl->cb->data_eof(cl);
}
static void uclient_backend_change_state(struct uclient *cl)
{
cl->timeout.cb = __uclient_backend_change_state;
uloop_timeout_set(&cl->timeout, 1);
}
void __hidden uclient_backend_set_error(struct uclient *cl, int code)
{
if (cl->error_code)
return;
uloop_timeout_cancel(&cl->connection_timeout);
cl->error_code = code;
uclient_backend_change_state(cl);
}
void __hidden uclient_backend_set_eof(struct uclient *cl)
{
if (cl->eof || cl->error_code)
return;
uloop_timeout_cancel(&cl->connection_timeout);
cl->eof = true;
uclient_backend_change_state(cl);
}
void __hidden uclient_backend_reset_state(struct uclient *cl)
{
cl->data_eof = false;
cl->eof = false;
cl->error_code = 0;
uloop_timeout_cancel(&cl->timeout);
}

130
src/3P/uclient/uclient.h Normal file
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@@ -0,0 +1,130 @@
/*
* uclient - ustream based protocol client library
*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __LIBUBOX_UCLIENT_H
#define __LIBUBOX_UCLIENT_H
#include <netinet/in.h>
#include <libubox/blob.h>
#include <libubox/ustream.h>
#include <libubox/ustream-ssl.h>
#define UCLIENT_DEFAULT_TIMEOUT_MS 30000
struct uclient_cb;
struct uclient_backend;
enum uclient_error_code {
UCLIENT_ERROR_UNKNOWN,
UCLIENT_ERROR_CONNECT,
UCLIENT_ERROR_TIMEDOUT,
UCLIENT_ERROR_SSL_INVALID_CERT,
UCLIENT_ERROR_SSL_CN_MISMATCH,
UCLIENT_ERROR_MISSING_SSL_CONTEXT,
};
union uclient_addr {
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_in6 sin6;
};
struct uclient_url {
const struct uclient_backend *backend;
int prefix;
const char *host;
const char *port;
const char *location;
const char *auth;
};
struct uclient {
const struct uclient_backend *backend;
const struct uclient_cb *cb;
union uclient_addr local_addr, remote_addr;
struct uclient_url *proxy_url;
struct uclient_url *url;
int timeout_msecs;
void *priv;
bool eof;
bool data_eof;
int error_code;
int status_code;
int seq;
struct blob_attr *meta;
struct uloop_timeout connection_timeout;
struct uloop_timeout timeout;
};
struct uclient_cb {
void (*data_read)(struct uclient *cl);
void (*data_sent)(struct uclient *cl);
void (*data_eof)(struct uclient *cl);
void (*header_done)(struct uclient *cl);
void (*error)(struct uclient *cl, int code);
};
struct uclient *uclient_new(const char *url, const char *auth_str, const struct uclient_cb *cb);
void uclient_free(struct uclient *cl);
int uclient_set_url(struct uclient *cl, const char *url, const char *auth);
int uclient_set_proxy_url(struct uclient *cl, const char *url_str, const char *auth_str);
/**
* Sets connection timeout.
*
* Provided timeout value will be used for:
* 1) Receiving HTTP response
* 2) Receiving data
*
* In case of timeout uclient will use error callback with
* UCLIENT_ERROR_TIMEDOUT code.
*
* @param msecs timeout in milliseconds
*/
int uclient_set_timeout(struct uclient *cl, int msecs);
int uclient_connect(struct uclient *cl);
void uclient_disconnect(struct uclient *cl);
int uclient_read(struct uclient *cl, char *buf, int len);
int uclient_write(struct uclient *cl, const char *buf, int len);
int uclient_request(struct uclient *cl);
char *uclient_get_addr(char *dest, int *port, union uclient_addr *a);
/* HTTP */
extern const struct uclient_backend uclient_backend_http;
int uclient_http_reset_headers(struct uclient *cl);
int uclient_http_set_header(struct uclient *cl, const char *name, const char *value);
int uclient_http_set_request_type(struct uclient *cl, const char *type);
int uclient_http_redirect(struct uclient *cl);
int uclient_http_set_ssl_ctx(struct uclient *cl, const struct ustream_ssl_ops *ops,
struct ustream_ssl_ctx *ctx, bool require_validation);
int uclient_http_set_address_family(struct uclient *cl, int af);
#endif