2 * uclient - ustream based protocol client library
4 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
26 #include <libubox/blobmsg.h>
29 #include "uclient-utils.h"
32 #define LIB_EXT "dylib"
37 static struct ustream_ssl_ctx *ssl_ctx;
38 static const struct ustream_ssl_ops *ssl_ops;
39 static int quiet = false;
40 static bool verify = true;
41 static const char *output_file;
42 static int output_fd = -1;
45 static char *username;
46 static char *password;
47 static char *auth_str;
49 static int open_output_file(const char *path, bool create)
56 flags |= O_CREAT | O_EXCL;
59 if (!strcmp(output_file, "-"))
63 fprintf(stderr, "Writing to stdout\n");
66 return open(output_file, flags, 0644);
69 filename = uclient_get_url_filename(path, "index.html");
71 fprintf(stderr, "Writing to '%s'\n", filename);
72 ret = open(filename, flags, 0644);
78 static void request_done(struct uclient *cl)
80 if (output_fd >= 0 && !output_file) {
84 uclient_disconnect(cl);
88 static void header_done_cb(struct uclient *cl)
92 if (retries < 10 && uclient_http_redirect(cl)) {
94 fprintf(stderr, "Redirected to %s on %s\n", cl->url->location, cl->url->host);
101 switch (cl->status_code) {
104 output_fd = open_output_file(cl->url->location, true);
107 perror("Cannot open output file");
115 fprintf(stderr, "HTTP error %d\n", cl->status_code);
122 static void read_data_cb(struct uclient *cl)
131 len = uclient_read(cl, buf, sizeof(buf));
136 write(output_fd, buf, len);
140 static void msg_connecting(struct uclient *cl)
142 char addr[INET6_ADDRSTRLEN];
148 uclient_get_addr(addr, &port, &cl->remote_addr);
149 fprintf(stderr, "Connecting to %s:%d\n", addr, port);
152 static void init_request(struct uclient *cl)
157 uclient_http_set_request_type(cl, "GET");
161 static void eof_cb(struct uclient *cl)
165 fprintf(stderr, "Connection reset prematurely\n");
168 fprintf(stderr, "Download completed (%d bytes)\n", out_bytes);
173 static void handle_uclient_error(struct uclient *cl, int code)
175 const char *type = "Unknown error";
179 case UCLIENT_ERROR_CONNECT:
180 type = "Connection failed";
183 case UCLIENT_ERROR_SSL_INVALID_CERT:
184 type = "Invalid SSL certificate";
188 case UCLIENT_ERROR_SSL_CN_MISMATCH:
189 type = "Server hostname does not match SSL certificate";
199 fprintf(stderr, "Connection error: %s%s\n", type, ignore ? " (ignored)" : "");
207 static const struct uclient_cb cb = {
208 .header_done = header_done_cb,
209 .data_read = read_data_cb,
211 .error = handle_uclient_error,
214 static int usage(const char *progname)
217 "Usage: %s [options] <URL>\n"
219 " -q: Turn off status messages\n"
220 " -O <file>: Redirect output to file (use \"-\" for stdout)\n"
223 " --ca-certificate=<cert>: Load CA certificates from file <cert>\n"
224 " --no-check-certificate: don't validate the server's certificate\n"
230 static void init_ustream_ssl(void)
234 dlh = dlopen("libustream-ssl." LIB_EXT, RTLD_LAZY | RTLD_LOCAL);
238 ssl_ops = dlsym(dlh, "ustream_ssl_ops");
242 ssl_ctx = ssl_ops->context_new(false);
245 static int no_ssl(const char *progname)
247 fprintf(stderr, "%s: SSL support not available, please install ustream-ssl\n", progname);
252 L_NO_CHECK_CERTIFICATE,
258 static const struct option longopts[] = {
259 [L_NO_CHECK_CERTIFICATE] = { "no-check-certificate", no_argument },
260 [L_CA_CERTIFICATE] = { "ca-certificate", required_argument },
261 [L_USER] = { "user", required_argument },
262 [L_PASSWORD] = { "password", required_argument },
266 int main(int argc, char **argv)
268 const char *progname = argv[0];
275 while ((ch = getopt_long(argc, argv, "qO:", longopts, &longopt_idx)) != -1) {
278 switch (longopt_idx) {
279 case L_NO_CHECK_CERTIFICATE:
282 case L_CA_CERTIFICATE:
284 ssl_ops->context_add_ca_crt_file(ssl_ctx, optarg);
289 username = strdup(optarg);
290 memset(optarg, '*', strlen(optarg));
295 password = strdup(optarg);
296 memset(optarg, '*', strlen(optarg));
299 return usage(progname);
303 output_file = optarg;
309 return usage(progname);
317 return usage(progname);
319 if (!strncmp(argv[0], "https", 5) && !ssl_ctx)
320 return no_ssl(progname);
326 asprintf(&auth_str, "%s:%s", username, password);
332 fprintf(stderr, "Downloading '%s'\n", argv[0]);
334 cl = uclient_new(argv[0], auth_str, &cb);
336 fprintf(stderr, "Failed to allocate uclient context\n");
341 uclient_http_set_ssl_ctx(cl, ssl_ops, ssl_ctx, verify);
349 if (output_fd >= 0 && output_fd != STDOUT_FILENO)
353 ssl_ops->context_free(ssl_ctx);