#include <stdio.h>
#include <dlfcn.h>
#include <getopt.h>
+#include <fcntl.h>
#include <libubox/blobmsg.h>
static struct ustream_ssl_ctx *ssl_ctx;
static const struct ustream_ssl_ops *ssl_ops;
static int quiet = false;
+static bool verify = true;
+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)
+{
+ if (output_fd >= 0) {
+ close(output_fd);
+ output_fd = -1;
+ }
+ uclient_disconnect(cl);
+ uloop_end();
+}
static void example_header_done(struct uclient *cl)
{
+ static int retries;
+
struct blob_attr *cur;
int rem;
- if (quiet)
+ 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;
+ }
- printf("Headers (%d): \n", cl->status_code);
- blobmsg_for_each_attr(cur, cl->meta, rem) {
- printf("%s=%s\n", blobmsg_name(cur), (char *) blobmsg_data(cur));
+ 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);
+ error_ret = 8;
+ 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);
}
}
fprintf(stderr, "Connecting to %s %s:%d\n", cl->url->host, addr, port);
}
-static void example_request_sm(struct uclient *cl)
+static void init_request(struct uclient *cl)
{
- static int i = 0;
-
- switch (i++) {
- case 0:
- uclient_connect(cl);
- msg_connecting(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:
- uloop_end();
- break;
- };
+ uclient_connect(cl);
+ msg_connecting(cl);
+ uclient_http_set_request_type(cl, "GET");
+ uclient_request(cl);
}
static void example_eof(struct uclient *cl)
{
- static int retries;
-
- if (retries < 10 && uclient_http_redirect(cl)) {
- retries++;
- return;
- }
-
- retries = 0;
- example_request_sm(cl);
+ request_done(cl);
}
-static void example_error(struct uclient *cl, int code)
+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_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, "Error %d!\n", code);
- example_request_sm(cl);
+ 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 = example_header_done,
.data_read = example_read_data,
.data_eof = example_eof,
- .error = example_error,
+ .error = handle_uclient_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"
{
const char *progname = argv[0];
struct uclient *cl;
- bool verify = true;
int ch;
int longopt_idx = 0;
init_ustream_ssl();
- while ((ch = getopt_long(argc, argv, "q", longopts, &longopt_idx)) != -1) {
+ while ((ch = getopt_long(argc, argv, "qO:", longopts, &longopt_idx)) != -1) {
switch(ch) {
case 0:
switch (longopt_idx) {
return usage(progname);
}
break;
+ case 'O':
+ output_file = optarg;
+ break;
case 'q':
quiet = true;
break;
if (ssl_ctx)
uclient_http_set_ssl_ctx(cl, ssl_ops, ssl_ctx, verify);
- example_request_sm(cl);
+ init_request(cl);
uloop_run();
uloop_done();
if (ssl_ctx)
ssl_ops->context_free(ssl_ctx);
- return 0;
+ return error_ret;
}
projects / project / uclient.git / blobdiff