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.
23 #include <libubox/blobmsg.h>
28 #define LIB_EXT "dylib"
33 static struct ustream_ssl_ctx *ssl_ctx;
34 static const struct ustream_ssl_ops *ssl_ops;
36 static void example_header_done(struct uclient *cl)
38 struct blob_attr *cur;
39 char local[INET6_ADDRSTRLEN], remote[INET6_ADDRSTRLEN];
40 int local_port, remote_port;
43 uclient_get_addr(local, &local_port, &cl->local_addr);
44 uclient_get_addr(remote, &remote_port, &cl->remote_addr);
46 fprintf(stderr, "Connected: %s:%d -> %s:%d\n",
47 local, local_port, remote, remote_port);
49 printf("Headers (%d): \n", cl->status_code);
50 blobmsg_for_each_attr(cur, cl->meta, rem) {
51 printf("%s=%s\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
54 printf("Contents:\n");
57 static void example_read_data(struct uclient *cl)
63 len = uclient_read(cl, buf, sizeof(buf));
67 write(STDOUT_FILENO, buf, len);
71 static void example_request_sm(struct uclient *cl)
78 uclient_http_set_request_type(cl, "HEAD");
83 uclient_http_set_request_type(cl, "GET");
92 static void example_eof(struct uclient *cl)
96 if (retries < 10 && uclient_http_redirect(cl)) {
102 example_request_sm(cl);
105 static void example_error(struct uclient *cl, int code)
107 fprintf(stderr, "Error %d!\n", code);
108 example_request_sm(cl);
111 static const struct uclient_cb cb = {
112 .header_done = example_header_done,
113 .data_read = example_read_data,
114 .data_eof = example_eof,
115 .error = example_error,
118 static int usage(const char *progname)
121 "Usage: %s [options] <hostname> <port>\n"
123 " -c <cert>: Load CA certificates from file <cert>\n"
124 " -C: Skip certificate CN verification against hostname\n"
130 static void init_ustream_ssl(void)
134 dlh = dlopen("libustream-ssl." LIB_EXT, RTLD_LAZY | RTLD_LOCAL);
138 ssl_ops = dlsym(dlh, "ustream_ssl_ops");
142 ssl_ctx = ssl_ops->context_new(false);
145 static int no_ssl(const char *progname)
147 fprintf(stderr, "%s: SSL support not available, please install ustream-ssl\n", progname);
152 int main(int argc, char **argv)
154 const char *progname = argv[0];
161 while ((ch = getopt(argc, argv, "Cc:")) != -1) {
165 ssl_ops->context_add_ca_crt_file(ssl_ctx, optarg);
171 return usage(progname);
179 return usage(progname);
181 if (!strncmp(argv[0], "https", 5) && !ssl_ctx)
182 return no_ssl(progname);
186 cl = uclient_new(argv[0], NULL, &cb);
188 fprintf(stderr, "Failed to allocate uclient context\n");
193 uclient_http_set_ssl_ctx(cl, ssl_ops, ssl_ctx, verify);
195 example_request_sm(cl);
202 ssl_ops->context_free(ssl_ctx);