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.
26 #include <libubox/blobmsg.h>
29 #include "uclient-utils.h"
32 #define LIB_EXT "dylib"
37 static struct ustream_ssl_ctx
*ssl_ctx
;
38 static const struct ustream_ssl_ops
*ssl_ops
;
39 static int quiet
= false;
40 static bool verify
= true;
41 static const char *output_file
;
42 static int output_fd
= -1;
45 static char *username
;
46 static char *password
;
47 static char *auth_str
;
49 static int open_output_file(const char *path
, bool create
)
56 flags
|= O_CREAT
| O_EXCL
;
59 if (!strcmp(output_file
, "-"))
63 fprintf(stderr
, "Writing to stdout\n");
66 return open(output_file
, flags
, 0644);
69 filename
= uclient_get_url_filename(path
, "index.html");
71 fprintf(stderr
, "Writing to '%s'\n", filename
);
72 ret
= open(filename
, flags
, 0644);
78 static void request_done(struct uclient
*cl
)
80 if (output_fd
>= 0 && !output_file
) {
84 uclient_disconnect(cl
);
88 static void header_done_cb(struct uclient
*cl
)
92 if (retries
< 10 && uclient_http_redirect(cl
)) {
94 fprintf(stderr
, "Redirected to %s on %s\n", cl
->url
->location
, cl
->url
->host
);
101 switch (cl
->status_code
) {
104 output_fd
= open_output_file(cl
->url
->location
, true);
107 perror("Cannot open output file");
115 fprintf(stderr
, "HTTP error %d\n", cl
->status_code
);
122 static void read_data_cb(struct uclient
*cl
)
131 len
= uclient_read(cl
, buf
, sizeof(buf
));
136 write(output_fd
, buf
, len
);
140 static void msg_connecting(struct uclient
*cl
)
142 char addr
[INET6_ADDRSTRLEN
];
148 uclient_get_addr(addr
, &port
, &cl
->remote_addr
);
149 fprintf(stderr
, "Connecting to %s:%d\n", addr
, port
);
152 static void init_request(struct uclient
*cl
)
157 uclient_http_set_request_type(cl
, "GET");
161 static void eof_cb(struct uclient
*cl
)
165 fprintf(stderr
, "Connection reset prematurely\n");
168 fprintf(stderr
, "Download completed (%d bytes)\n", out_bytes
);
173 static void handle_uclient_error(struct uclient
*cl
, int code
)
175 const char *type
= "Unknown error";
179 case UCLIENT_ERROR_CONNECT
:
180 type
= "Connection failed";
183 case UCLIENT_ERROR_SSL_INVALID_CERT
:
184 type
= "Invalid SSL certificate";
188 case UCLIENT_ERROR_SSL_CN_MISMATCH
:
189 type
= "Server hostname does not match SSL certificate";
199 fprintf(stderr
, "Connection error: %s%s\n", type
, ignore
? " (ignored)" : "");
207 static const struct uclient_cb cb
= {
208 .header_done
= header_done_cb
,
209 .data_read
= read_data_cb
,
211 .error
= handle_uclient_error
,
214 static int usage(const char *progname
)
217 "Usage: %s [options] <URL>\n"
219 " -q: Turn off status messages\n"
220 " -O <file>: Redirect output to file (use \"-\" for stdout)\n"
223 " --ca-certificate=<cert>: Load CA certificates from file <cert>\n"
224 " --no-check-certificate: don't validate the server's certificate\n"
230 static void init_ustream_ssl(void)
234 dlh
= dlopen("libustream-ssl." LIB_EXT
, RTLD_LAZY
| RTLD_LOCAL
);
238 ssl_ops
= dlsym(dlh
, "ustream_ssl_ops");
242 ssl_ctx
= ssl_ops
->context_new(false);
245 static int no_ssl(const char *progname
)
247 fprintf(stderr
, "%s: SSL support not available, please install ustream-ssl\n", progname
);
252 L_NO_CHECK_CERTIFICATE
,
258 static const struct option longopts
[] = {
259 [L_NO_CHECK_CERTIFICATE
] = { "no-check-certificate", no_argument
},
260 [L_CA_CERTIFICATE
] = { "ca-certificate", required_argument
},
261 [L_USER
] = { "user", required_argument
},
262 [L_PASSWORD
] = { "password", required_argument
},
266 int main(int argc
, char **argv
)
268 const char *progname
= argv
[0];
275 while ((ch
= getopt_long(argc
, argv
, "qO:", longopts
, &longopt_idx
)) != -1) {
278 switch (longopt_idx
) {
279 case L_NO_CHECK_CERTIFICATE
:
282 case L_CA_CERTIFICATE
:
284 ssl_ops
->context_add_ca_crt_file(ssl_ctx
, optarg
);
289 username
= strdup(optarg
);
290 memset(optarg
, '*', strlen(optarg
));
295 password
= strdup(optarg
);
296 memset(optarg
, '*', strlen(optarg
));
299 return usage(progname
);
303 output_file
= optarg
;
309 return usage(progname
);
317 return usage(progname
);
319 if (!strncmp(argv
[0], "https", 5) && !ssl_ctx
)
320 return no_ssl(progname
);
326 asprintf(&auth_str
, "%s:%s", username
, password
);
332 fprintf(stderr
, "Downloading '%s'\n", argv
[0]);
334 cl
= uclient_new(argv
[0], auth_str
, &cb
);
336 fprintf(stderr
, "Failed to allocate uclient context\n");
341 uclient_http_set_ssl_ctx(cl
, ssl_ops
, ssl_ctx
, verify
);
349 if (output_fd
>= 0 && output_fd
!= STDOUT_FILENO
)
353 ssl_ops
->context_free(ssl_ctx
);