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.
24 #include <libubox/blobmsg.h>
29 #define LIB_EXT "dylib"
34 static struct ustream_ssl_ctx *ssl_ctx;
35 static const struct ustream_ssl_ops *ssl_ops;
37 static void example_header_done(struct uclient *cl)
39 struct blob_attr *cur;
40 char local[INET6_ADDRSTRLEN], remote[INET6_ADDRSTRLEN];
41 int local_port, remote_port;
44 uclient_get_addr(local, &local_port, &cl->local_addr);
45 uclient_get_addr(remote, &remote_port, &cl->remote_addr);
47 fprintf(stderr, "Connected: %s:%d -> %s:%d\n",
48 local, local_port, remote, remote_port);
50 printf("Headers (%d): \n", cl->status_code);
51 blobmsg_for_each_attr(cur, cl->meta, rem) {
52 printf("%s=%s\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
55 printf("Contents:\n");
58 static void example_read_data(struct uclient *cl)
64 len = uclient_read(cl, buf, sizeof(buf));
68 write(STDOUT_FILENO, buf, len);
72 static void example_request_sm(struct uclient *cl)
79 uclient_http_set_request_type(cl, "HEAD");
84 uclient_http_set_request_type(cl, "GET");
93 static void example_eof(struct uclient *cl)
97 if (retries < 10 && uclient_http_redirect(cl)) {
103 example_request_sm(cl);
106 static void example_error(struct uclient *cl, int code)
108 fprintf(stderr, "Error %d!\n", code);
109 example_request_sm(cl);
112 static const struct uclient_cb cb = {
113 .header_done = example_header_done,
114 .data_read = example_read_data,
115 .data_eof = example_eof,
116 .error = example_error,
119 static int usage(const char *progname)
122 "Usage: %s [options] <hostname> <port>\n"
124 " -c <cert>: Load CA certificates from file <cert>\n"
125 " -C: Skip certificate CN verification against hostname\n"
131 static void init_ustream_ssl(void)
135 dlh = dlopen("libustream-ssl." LIB_EXT, RTLD_LAZY | RTLD_LOCAL);
139 ssl_ops = dlsym(dlh, "ustream_ssl_ops");
143 ssl_ctx = ssl_ops->context_new(false);
146 static int no_ssl(const char *progname)
148 fprintf(stderr, "%s: SSL support not available, please install ustream-ssl\n", progname);
153 L_NO_CHECK_CERTIFICATE,
157 static const struct option longopts[] = {
158 [L_NO_CHECK_CERTIFICATE] = { "no-check-certificate", no_argument },
159 [L_CA_CERTIFICATE] = { "ca-certificate", required_argument },
163 int main(int argc, char **argv)
165 const char *progname = argv[0];
173 while ((ch = getopt_long(argc, argv, "", longopts, &longopt_idx)) != -1) {
176 switch (longopt_idx) {
177 case L_NO_CHECK_CERTIFICATE:
180 case L_CA_CERTIFICATE:
182 ssl_ops->context_add_ca_crt_file(ssl_ctx, optarg);
185 return usage(progname);
189 return usage(progname);
197 return usage(progname);
199 if (!strncmp(argv[0], "https", 5) && !ssl_ctx)
200 return no_ssl(progname);
204 cl = uclient_new(argv[0], NULL, &cb);
206 fprintf(stderr, "Failed to allocate uclient context\n");
211 uclient_http_set_ssl_ctx(cl, ssl_ops, ssl_ctx, verify);
213 example_request_sm(cl);
220 ssl_ops->context_free(ssl_ctx);