* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#define _GNU_SOURCE
+#include <sys/stat.h>
+#include <sys/socket.h>
#include <unistd.h>
#include <stdio.h>
#include <dlfcn.h>
#include <getopt.h>
#include <fcntl.h>
+#include <glob.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <signal.h>
#include <libubox/blobmsg.h>
+#include "progress.h"
#include "uclient.h"
#include "uclient-utils.h"
#define LIB_EXT "so"
#endif
+static const char *user_agent = "uclient-fetch";
+static const char *post_data;
+static const char *post_file;
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 bool proxy = true;
+static bool default_certs = false;
+static bool no_output;
+static const char *opt_output_file;
static int output_fd = -1;
static int error_ret;
+static off_t out_offset;
+static off_t out_bytes;
+static off_t out_len;
+static char *auth_str;
+static char **urls;
+static int n_urls;
+static int timeout;
+static bool resume, cur_resume;
+
+static struct progress pmt;
+static struct uloop_timeout pmt_timer;
+
+static int init_request(struct uclient *cl);
+static void request_done(struct uclient *cl);
+
+static void pmt_update(struct uloop_timeout *t)
+{
+ progress_update(&pmt, out_offset, out_bytes, out_len);
+ uloop_timeout_set(t, 1000);
+}
+
+static const char *
+get_proxy_url(char *url)
+{
+ char prefix[16];
+ char *sep;
+
+ if (!proxy)
+ return NULL;
-static int open_output_file(const char *path, bool create)
+ sep = strchr(url, ':');
+ if (!sep)
+ return NULL;
+
+ if (sep - url > 5)
+ return NULL;
+
+ memcpy(prefix, url, sep - url);
+ strcpy(prefix + (sep - url), "_proxy");
+ return getenv(prefix);
+}
+
+static int open_output_file(const char *path, uint64_t resume_offset)
{
- char *filename;
- int flags = O_WRONLY;
+ const char *output_file = opt_output_file;
+ char *filename = NULL;
+ int flags;
int ret;
- if (create)
- flags |= O_CREAT;
+ if (cur_resume)
+ flags = O_RDWR;
+ else
+ flags = O_WRONLY | O_TRUNC;
+
+ if (!cur_resume && !output_file)
+ flags |= O_EXCL;
+
+ flags |= O_CREAT;
if (output_file) {
- if (!strcmp(output_file, "-"))
- return STDOUT_FILENO;
+ if (!strcmp(output_file, "-")) {
+ if (!quiet)
+ fprintf(stderr, "Writing to stdout\n");
- return open(output_file, flags, 0644);
- }
+ ret = STDOUT_FILENO;
+ goto done;
+ }
+ } else {
+ filename = uclient_get_url_filename(path, "index.html");
+ if (!filename) {
+ ret = -ENOMEM;
+ goto out;
+ }
- /* Don't automatically overwrite files if the name is derived from the URL */
- if (create)
- flags |= O_EXCL;
+ output_file = filename;
+ }
- filename = uclient_get_url_filename(path, "index.html");
- ret = open(filename, flags, 0644);
- free(filename);
+ if (!quiet)
+ fprintf(stderr, "Writing to '%s'\n", output_file);
+ ret = open(output_file, flags, 0644);
+ if (ret < 0)
+ goto free;
- return ret;
-}
+ if (resume_offset &&
+ lseek(ret, resume_offset, SEEK_SET) < 0) {
+ if (!quiet)
+ fprintf(stderr, "Failed to seek %"PRIu64" bytes in output file\n", resume_offset);
+ close(ret);
+ ret = -1;
+ goto free;
+ }
-static void request_done(struct uclient *cl)
-{
- if (output_fd >= 0 && !output_file) {
- close(output_fd);
- output_fd = -1;
+ out_offset = resume_offset;
+ out_bytes += resume_offset;
+done:
+ if (!quiet) {
+ progress_init(&pmt, output_file);
+ pmt_timer.cb = pmt_update;
+ pmt_timer.cb(&pmt_timer);
}
- uclient_disconnect(cl);
- uloop_end();
+
+free:
+ free(filename);
+out:
+ return ret;
}
static void header_done_cb(struct uclient *cl)
{
+ enum {
+ H_RANGE,
+ H_LEN,
+ __H_MAX
+ };
+ static const struct blobmsg_policy policy[__H_MAX] = {
+ [H_RANGE] = { .name = "content-range", .type = BLOBMSG_TYPE_STRING },
+ [H_LEN] = { .name = "content-length", .type = BLOBMSG_TYPE_STRING },
+ };
+ struct blob_attr *tb[__H_MAX];
+ uint64_t resume_offset = 0, resume_end, resume_size;
static int retries;
- if (retries < 10 && uclient_http_redirect(cl)) {
- if (!quiet)
- fprintf(stderr, "Redirected to %s on %s\n", cl->url->location, cl->url->host);
+ if (retries < 10) {
+ int ret = uclient_http_redirect(cl);
+ if (ret < 0) {
+ if (!quiet)
+ fprintf(stderr, "Failed to redirect to %s on %s\n", cl->url->location, cl->url->host);
+ error_ret = 8;
+ request_done(cl);
+ return;
+ }
+ if (ret > 0) {
+ if (!quiet)
+ fprintf(stderr, "Redirected to %s on %s\n", cl->url->location, cl->url->host);
- retries++;
+ retries++;
+ return;
+ }
+ }
+
+ if (cl->status_code == 204 && cur_resume) {
+ /* Resume attempt failed, try normal download */
+ cur_resume = false;
+ init_request(cl);
return;
}
- retries = 0;
+ blobmsg_parse(policy, __H_MAX, tb, blob_data(cl->meta), blob_len(cl->meta));
+
switch (cl->status_code) {
+ case 416:
+ if (!quiet)
+ fprintf(stderr, "File download already fully retrieved; nothing to do.\n");
+ request_done(cl);
+ break;
+ case 206:
+ if (!cur_resume) {
+ if (!quiet)
+ fprintf(stderr, "Error: Partial content received, full content requested\n");
+ error_ret = 8;
+ request_done(cl);
+ break;
+ }
+
+ if (!tb[H_RANGE]) {
+ if (!quiet)
+ fprintf(stderr, "Content-Range header is missing\n");
+ error_ret = 8;
+ break;
+ }
+
+ if (sscanf(blobmsg_get_string(tb[H_RANGE]),
+ "bytes %"PRIu64"-%"PRIu64"/%"PRIu64,
+ &resume_offset, &resume_end, &resume_size) != 3) {
+ if (!quiet)
+ fprintf(stderr, "Content-Range header is invalid\n");
+ error_ret = 8;
+ break;
+ }
+ /* fall through */
case 204:
case 200:
- output_fd = open_output_file(cl->url->location, true);
+ if (no_output)
+ break;
+
+ if (tb[H_LEN])
+ out_len = strtoul(blobmsg_get_string(tb[H_LEN]), NULL, 10);
+
+ output_fd = open_output_file(cl->url->location, resume_offset);
if (output_fd < 0) {
if (!quiet)
perror("Cannot open output file");
static void read_data_cb(struct uclient *cl)
{
char buf[256];
+ ssize_t n;
int len;
- if (output_fd < 0)
+ if (!no_output && output_fd < 0)
return;
while (1) {
len = uclient_read(cl, buf, sizeof(buf));
- if (!len)
+ if (len <= 0)
return;
- write(output_fd, buf, len);
+ out_bytes += len;
+ if (!no_output) {
+ n = write(output_fd, buf, len);
+ if (n < 0)
+ return;
+ }
}
}
return;
uclient_get_addr(addr, &port, &cl->remote_addr);
- fprintf(stderr, "Connecting to %s %s:%d\n", cl->url->host, addr, port);
+ fprintf(stderr, "Connecting to %s:%d\n", addr, port);
+}
+
+static void check_resume_offset(struct uclient *cl)
+{
+ char range_str[64];
+ struct stat st;
+ char *file;
+ int ret;
+
+ file = uclient_get_url_filename(cl->url->location, "index.html");
+ if (!file)
+ return;
+
+ ret = stat(file, &st);
+ free(file);
+ if (ret)
+ return;
+
+ if (!st.st_size)
+ return;
+
+ snprintf(range_str, sizeof(range_str), "bytes=%"PRIu64"-", (uint64_t) st.st_size);
+ uclient_http_set_header(cl, "Range", range_str);
}
-static void init_request(struct uclient *cl)
+static int init_request(struct uclient *cl)
{
- uclient_connect(cl);
+ int rc;
+
+ out_offset = 0;
+ out_bytes = 0;
+ out_len = 0;
+ uclient_http_set_ssl_ctx(cl, ssl_ops, ssl_ctx, verify);
+
+ if (timeout)
+ cl->timeout_msecs = timeout * 1000;
+
+ rc = uclient_connect(cl);
+ if (rc)
+ return rc;
+
msg_connecting(cl);
- uclient_http_set_request_type(cl, "GET");
- uclient_request(cl);
+
+ rc = uclient_http_set_request_type(cl, post_data || post_file ? "POST" : "GET");
+ if (rc)
+ return rc;
+
+ uclient_http_reset_headers(cl);
+ uclient_http_set_header(cl, "User-Agent", user_agent);
+ if (cur_resume)
+ check_resume_offset(cl);
+
+ if (post_data) {
+ uclient_http_set_header(cl, "Content-Type", "application/x-www-form-urlencoded");
+ uclient_write(cl, post_data, strlen(post_data));
+ }
+ else if(post_file)
+ {
+ FILE *input_file;
+ uclient_http_set_header(cl, "Content-Type", "application/x-www-form-urlencoded");
+
+ input_file = fopen(post_file, "r");
+ if (!input_file)
+ return errno;
+
+ char tbuf[1024];
+ size_t rlen = 0;
+ do
+ {
+ rlen = fread(tbuf, 1, sizeof(tbuf), input_file);
+ uclient_write(cl, tbuf, rlen);
+ }
+ while(rlen);
+
+ fclose(input_file);
+ }
+
+ rc = uclient_request(cl);
+ if (rc)
+ return rc;
+
+ return 0;
}
+static void request_done(struct uclient *cl)
+{
+ const char *proxy_url;
+
+ if (n_urls) {
+ proxy_url = get_proxy_url(*urls);
+ if (proxy_url) {
+ uclient_set_url(cl, proxy_url, NULL);
+ uclient_set_proxy_url(cl, *urls, auth_str);
+ } else {
+ uclient_set_url(cl, *urls, auth_str);
+ }
+ n_urls--;
+ cur_resume = resume;
+ error_ret = init_request(cl);
+ if (error_ret == 0)
+ return;
+ }
+
+ if (output_fd >= 0 && !opt_output_file) {
+ close(output_fd);
+ output_fd = -1;
+ }
+ uclient_disconnect(cl);
+ uloop_end();
+}
+
+
static void eof_cb(struct uclient *cl)
{
+ if (!quiet) {
+ pmt_update(&pmt_timer);
+ uloop_timeout_cancel(&pmt_timer);
+ fprintf(stderr, "\n");
+ }
+
if (!cl->data_eof) {
if (!quiet)
fprintf(stderr, "Connection reset prematurely\n");
error_ret = 4;
+ } else if (!quiet) {
+ fprintf(stderr, "Download completed (%"PRIu64" bytes)\n", (uint64_t) out_bytes);
}
request_done(cl);
}
type = "Connection failed";
error_ret = 4;
break;
+ case UCLIENT_ERROR_TIMEDOUT:
+ type = "Connection timed out";
+ error_ret = 4;
+ break;
case UCLIENT_ERROR_SSL_INVALID_CERT:
type = "Invalid SSL certificate";
ignore = !verify;
fprintf(stderr,
"Usage: %s [options] <URL>\n"
"Options:\n"
- " -q: Turn off status messages\n"
- " -O <file>: Redirect output to file (use \"-\" for stdout)\n"
+ " -4 Use IPv4 only\n"
+ " -6 Use IPv6 only\n"
+ " -q Turn off status messages\n"
+ " -O <file> Redirect output to file (use \"-\" for stdout)\n"
+ " -P <dir> Set directory for output files\n"
+ " --user=<user> HTTP authentication username\n"
+ " --password=<password> HTTP authentication password\n"
+ " --user-agent|-U <str> Set HTTP user agent\n"
+ " --post-data=STRING use the POST method; send STRING as the data\n"
+ " --post-file=FILE use the POST method; send FILE as the data\n"
+ " --spider|-s Spider mode - only check file existence\n"
+ " --timeout=N|-T N Set connect/request timeout to N seconds\n"
+ " --proxy=on|off|-Y on|off Enable/disable env var configured proxy\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"
+ " --ca-certificate=<cert> Load CA certificates from file <cert>\n"
+ " --no-check-certificate don't validate the server's certificate\n"
+ " --ciphers=<cipherlist> Set the cipher list string\n"
"\n", progname);
return 1;
}
+static void init_ca_cert(void)
+{
+ glob_t gl;
+ unsigned int i;
+
+ glob("/etc/ssl/certs/*.crt", 0, NULL, &gl);
+ for (i = 0; i < gl.gl_pathc; i++)
+ ssl_ops->context_add_ca_crt_file(ssl_ctx, gl.gl_pathv[i]);
+}
static void init_ustream_ssl(void)
{
static int no_ssl(const char *progname)
{
- fprintf(stderr, "%s: SSL support not available, please install ustream-ssl\n", progname);
+ fprintf(stderr,
+ "%s: SSL support not available, please install one of the "
+ "libustream-.*[ssl|tls] packages as well as the ca-bundle and "
+ "ca-certificates packages.\n",
+ progname);
+
return 1;
}
enum {
L_NO_CHECK_CERTIFICATE,
L_CA_CERTIFICATE,
+ L_CIPHERS,
+ L_USER,
+ L_PASSWORD,
+ L_USER_AGENT,
+ L_POST_DATA,
+ L_POST_FILE,
+ L_SPIDER,
+ L_TIMEOUT,
+ L_CONTINUE,
+ L_PROXY,
+ L_NO_PROXY,
+ L_QUIET,
};
static const struct option longopts[] = {
- [L_NO_CHECK_CERTIFICATE] = { "no-check-certificate", no_argument },
- [L_CA_CERTIFICATE] = { "ca-certificate", required_argument },
+ [L_NO_CHECK_CERTIFICATE] = { "no-check-certificate", no_argument, NULL, 0 },
+ [L_CA_CERTIFICATE] = { "ca-certificate", required_argument, NULL, 0 },
+ [L_CIPHERS] = { "ciphers", required_argument, NULL, 0 },
+ [L_USER] = { "user", required_argument, NULL, 0 },
+ [L_PASSWORD] = { "password", required_argument, NULL, 0 },
+ [L_USER_AGENT] = { "user-agent", required_argument, NULL, 0 },
+ [L_POST_DATA] = { "post-data", required_argument, NULL, 0 },
+ [L_POST_FILE] = { "post-file", required_argument, NULL, 0 },
+ [L_SPIDER] = { "spider", no_argument, NULL, 0 },
+ [L_TIMEOUT] = { "timeout", required_argument, NULL, 0 },
+ [L_CONTINUE] = { "continue", no_argument, NULL, 0 },
+ [L_PROXY] = { "proxy", required_argument, NULL, 0 },
+ [L_NO_PROXY] = { "no-proxy", no_argument, NULL, 0 },
+ [L_QUIET] = { "quiet", no_argument, NULL, 0 },
{}
};
+
+
int main(int argc, char **argv)
{
const char *progname = argv[0];
+ const char *proxy_url;
+ char *username = NULL;
+ char *password = NULL;
struct uclient *cl;
- int ch;
int longopt_idx = 0;
+ bool has_cert = false;
+ int i, ch;
+ int rc;
+ int af = -1;
+ signal(SIGPIPE, SIG_IGN);
init_ustream_ssl();
- while ((ch = getopt_long(argc, argv, "qO:", longopts, &longopt_idx)) != -1) {
+ while ((ch = getopt_long(argc, argv, "46cO:P:qsT:U:Y:", longopts, &longopt_idx)) != -1) {
switch(ch) {
case 0:
switch (longopt_idx) {
verify = false;
break;
case L_CA_CERTIFICATE:
+ has_cert = true;
if (ssl_ctx)
ssl_ops->context_add_ca_crt_file(ssl_ctx, optarg);
break;
+ case L_CIPHERS:
+ if (ssl_ctx) {
+ if (ssl_ops->context_set_ciphers(ssl_ctx, optarg)) {
+ if (!quiet)
+ fprintf(stderr, "No recognized ciphers in cipher list\n");
+ exit(1);
+ }
+ }
+ break;
+ case L_USER:
+ if (!strlen(optarg))
+ break;
+ username = strdupa(optarg);
+ memset(optarg, '*', strlen(optarg));
+ break;
+ case L_PASSWORD:
+ if (!strlen(optarg))
+ break;
+ password = strdupa(optarg);
+ memset(optarg, '*', strlen(optarg));
+ break;
+ case L_USER_AGENT:
+ user_agent = optarg;
+ break;
+ case L_POST_DATA:
+ post_data = optarg;
+ break;
+ case L_POST_FILE:
+ post_file = optarg;
+ break;
+ case L_SPIDER:
+ no_output = true;
+ break;
+ case L_TIMEOUT:
+ timeout = atoi(optarg);
+ break;
+ case L_CONTINUE:
+ resume = true;
+ break;
+ case L_PROXY:
+ if (strcmp(optarg, "on") != 0)
+ proxy = false;
+ break;
+ case L_NO_PROXY:
+ proxy = false;
+ break;
+ case L_QUIET:
+ quiet = true;
+ break;
default:
return usage(progname);
}
break;
+ case '4':
+ af = AF_INET;
+ break;
+ case '6':
+ af = AF_INET6;
+ break;
+ case 'c':
+ resume = true;
+ break;
+ case 'U':
+ user_agent = optarg;
+ break;
case 'O':
- output_file = optarg;
+ opt_output_file = optarg;
+ break;
+ case 'P':
+ if (chdir(optarg)) {
+ if (!quiet)
+ perror("Change output directory");
+ exit(1);
+ }
break;
case 'q':
quiet = true;
break;
+ case 's':
+ no_output = true;
+ break;
+ case 'T':
+ timeout = atoi(optarg);
+ break;
+ case 'Y':
+ if (strcmp(optarg, "on") != 0)
+ proxy = false;
+ break;
default:
return usage(progname);
}
argv += optind;
argc -= optind;
- if (argc != 1)
+ if (verify && !has_cert)
+ default_certs = true;
+
+ if (argc < 1)
return usage(progname);
- if (!strncmp(argv[0], "https", 5) && !ssl_ctx)
- return no_ssl(progname);
+ if (!ssl_ctx) {
+ for (i = 0; i < argc; i++) {
+ if (!strncmp(argv[i], "https", 5))
+ return no_ssl(progname);
+ }
+ }
+
+ urls = argv + 1;
+ n_urls = argc - 1;
uloop_init();
- cl = uclient_new(argv[0], NULL, &cb);
+ if (username) {
+ if (password) {
+ rc = asprintf(&auth_str, "%s:%s", username, password);
+ if (rc < 0)
+ return rc;
+ } else
+ auth_str = username;
+ }
+
+ if (!quiet)
+ fprintf(stderr, "Downloading '%s'\n", argv[0]);
+
+ proxy_url = get_proxy_url(argv[0]);
+ if (proxy_url) {
+ cl = uclient_new(proxy_url, auth_str, &cb);
+ if (cl)
+ uclient_set_proxy_url(cl, argv[0], NULL);
+ } else {
+ cl = uclient_new(argv[0], auth_str, &cb);
+ }
if (!cl) {
fprintf(stderr, "Failed to allocate uclient context\n");
return 1;
}
+ if (af >= 0)
+ uclient_http_set_address_family(cl, af);
+
+ if (ssl_ctx && default_certs)
+ init_ca_cert();
+
+ cur_resume = resume;
+ rc = init_request(cl);
+ if (!rc) {
+ /* no error received, we can enter main loop */
+ uloop_run();
+ } else {
+ fprintf(stderr, "Failed to send request: %s\n", strerror(rc));
+ error_ret = 4;
+ }
- if (ssl_ctx)
- uclient_http_set_ssl_ctx(cl, ssl_ops, ssl_ctx, verify);
-
- init_request(cl);
- uloop_run();
uloop_done();
uclient_free(cl);
projects / project / uclient.git / blobdiff