-#include <libubox/blobmsg.h>
+/*
+ * 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 <unistd.h>
#include <stdio.h>
+#include <dlfcn.h>
+#include <getopt.h>
+#include <fcntl.h>
+
+#include <libubox/blobmsg.h>
#include "uclient.h"
+#ifdef __APPLE__
+#define LIB_EXT "dylib"
+#else
+#define LIB_EXT "so"
+#endif
+
+static struct ustream_ssl_ctx *ssl_ctx;
+static const struct ustream_ssl_ops *ssl_ops;
+static int quiet = false;
+static const char *output_file;
+static int output_fd = -1;
+static int error_ret;
+
+static int open_output_file(const char *path, bool create)
+{
+ const char *str;
+ char *filename;
+ int len;
+ int flags = O_WRONLY;
+
+ if (create)
+ flags |= O_CREAT;
+
+ if (output_file) {
+ if (!strcmp(output_file, "-"))
+ return STDOUT_FILENO;
+
+ return open(output_file, flags, 0644);
+ }
+
+ /* Don't automatically overwrite files if the name is derived from the URL */
+ if (create)
+ flags |= O_EXCL;
+
+ len = strcspn(path, ";&");
+ while (len > 0 && path[len - 1] == '/')
+ len--;
+
+ for (str = path + len - 1; str >= path; str--) {
+ if (*str == '/')
+ break;
+ }
+
+ str++;
+ len -= str - path;
+
+ if (len > 0) {
+ filename = alloca(len + 1);
+ strncpy(filename, str, len);
+ filename[len] = 0;
+ } else {
+ filename = "index.html";
+ }
+
+ return open(filename, flags, 0644);
+}
+
+static void request_done(struct uclient *cl)
+{
+ uclient_disconnect(cl);
+ uloop_end();
+}
+
static void example_header_done(struct uclient *cl)
{
+ static int retries;
+
struct blob_attr *cur;
int rem;
- printf("Headers: \n");
- blobmsg_for_each_attr(cur, cl->meta, rem) {
- printf("%s=%s\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
+ if (retries < 10 && uclient_http_redirect(cl)) {
+ if (!quiet)
+ fprintf(stderr, "Redirected to %s on %s\n", cl->url->location, cl->url->host);
+
+ retries++;
+ return;
+ }
+
+ retries = 0;
+ if (!quiet) {
+ fprintf(stderr, "Headers (%d): \n", cl->status_code);
+ blobmsg_for_each_attr(cur, cl->meta, rem) {
+ fprintf(stderr, "%s=%s\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
+ }
}
- printf("Contents:\n");
+ switch (cl->status_code) {
+ case 204:
+ case 200:
+ output_fd = open_output_file(cl->url->location, true);
+ if (output_fd < 0) {
+ if (!quiet)
+ perror("Cannot open output file");
+ error_ret = 3;
+ request_done(cl);
+ }
+ break;
+
+ default:
+ request_done(cl);
+ break;
+ }
}
static void example_read_data(struct uclient *cl)
char buf[256];
int len;
+ if (output_fd < 0)
+ return;
+
while (1) {
len = uclient_read(cl, buf, sizeof(buf));
if (!len)
return;
- write(STDOUT_FILENO, buf, len);
+ write(output_fd, buf, len);
}
}
-static void example_request_sm(struct uclient *cl)
+static void msg_connecting(struct uclient *cl)
{
- static int i = 0;
+ char addr[INET6_ADDRSTRLEN];
+ int port;
- switch (i++) {
- case 0:
- uclient_connect(cl);
- uclient_http_set_request_type(cl, "HEAD");
- uclient_request(cl);
- break;
- case 1:
- uclient_connect(cl);
- uclient_http_set_request_type(cl, "GET");
- uclient_request(cl);
- break;
- default:
- uclient_free(cl);
- uloop_end();
- break;
- };
+ if (quiet)
+ return;
+
+ uclient_get_addr(addr, &port, &cl->remote_addr);
+ fprintf(stderr, "Connecting to %s %s:%d\n", cl->url->host, addr, port);
+}
+
+static void init_request(struct uclient *cl)
+{
+ uclient_connect(cl);
+ msg_connecting(cl);
+ uclient_http_set_request_type(cl, "GET");
+ uclient_request(cl);
}
static void example_eof(struct uclient *cl)
{
- example_request_sm(cl);
+ request_done(cl);
+}
+
+static void example_error(struct uclient *cl, int code)
+{
+ if (!quiet)
+ fprintf(stderr, "Error %d!\n", code);
+
+ request_done(cl);
}
static const struct uclient_cb cb = {
.header_done = example_header_done,
.data_read = example_read_data,
.data_eof = example_eof,
+ .error = example_error,
+};
+
+static int usage(const char *progname)
+{
+ fprintf(stderr,
+ "Usage: %s [options] <URL>\n"
+ "Options:\n"
+ " -O <file>: Redirect output to file (use \"-\" for stdout)\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_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 ustream-ssl\n", progname);
+ return 1;
+}
+
+enum {
+ L_NO_CHECK_CERTIFICATE,
+ L_CA_CERTIFICATE,
+};
+
+static const struct option longopts[] = {
+ [L_NO_CHECK_CERTIFICATE] = { "no-check-certificate", no_argument },
+ [L_CA_CERTIFICATE] = { "ca-certificate", required_argument },
+ {}
};
int main(int argc, char **argv)
{
+ const char *progname = argv[0];
struct uclient *cl;
+ bool verify = true;
+ int ch;
+ int longopt_idx = 0;
- if (argc != 2) {
- fprintf(stderr, "Usage: %s <URL>\n", argv[0]);
- return 1;
+ init_ustream_ssl();
+
+ while ((ch = getopt_long(argc, argv, "qO:", longopts, &longopt_idx)) != -1) {
+ switch(ch) {
+ case 0:
+ switch (longopt_idx) {
+ case L_NO_CHECK_CERTIFICATE:
+ verify = false;
+ break;
+ case L_CA_CERTIFICATE:
+ if (ssl_ctx)
+ ssl_ops->context_add_ca_crt_file(ssl_ctx, optarg);
+ break;
+ default:
+ return usage(progname);
+ }
+ break;
+ case 'O':
+ output_file = optarg;
+ break;
+ case 'q':
+ quiet = true;
+ break;
+ default:
+ return usage(progname);
+ }
}
+ argv += optind;
+ argc -= optind;
+
+ if (argc != 1)
+ return usage(progname);
+
+ if (!strncmp(argv[0], "https", 5) && !ssl_ctx)
+ return no_ssl(progname);
+
uloop_init();
- cl = uclient_new(argv[1], &cb);
+
+ cl = uclient_new(argv[0], NULL, &cb);
if (!cl) {
fprintf(stderr, "Failed to allocate uclient context\n");
return 1;
}
- example_request_sm(cl);
+
+ if (ssl_ctx)
+ uclient_http_set_ssl_ctx(cl, ssl_ops, ssl_ctx, verify);
+
+ init_request(cl);
uloop_run();
uloop_done();
- return 0;
+ uclient_free(cl);
+
+ if (ssl_ctx)
+ ssl_ops->context_free(ssl_ctx);
+
+ return error_ret;
}
projects / project / uclient.git / blobdiff