1: /***************************************************************************
2: * _ _ ____ _
3: * Project ___| | | | _ \| |
4: * / __| | | | |_) | |
5: * | (__| |_| | _ <| |___
6: * \___|\___/|_| \_\_____|
7: *
8: * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
9: *
10: * This software is licensed as described in the file COPYING, which
11: * you should have received as part of this distribution. The terms
12: * are also available at https://curl.haxx.se/docs/copyright.html.
13: *
14: * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15: * copies of the Software, and permit persons to whom the Software is
16: * furnished to do so, under the terms of the COPYING file.
17: *
18: * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19: * KIND, either express or implied.
20: *
21: ***************************************************************************/
22: #include "tool_setup.h"
23: #if defined(HAVE_STRCASECMP) && defined(HAVE_STRINGS_H)
24: #include <strings.h>
25: #endif
26:
27: #include "tool_panykey.h"
28: #include "tool_help.h"
29: #include "tool_libinfo.h"
30: #include "tool_version.h"
31:
32: #include "memdebug.h" /* keep this as LAST include */
33:
34: #ifdef MSDOS
35: # define USE_WATT32
36: #endif
37:
38: /*
39: * The help output is generated with the following command
40: ---------------------------------------------------------
41:
42: cd $srcroot/docs/cmdline-opts
43: ./gen.pl listhelp *.d
44: */
45:
46: struct helptxt {
47: const char *opt;
48: const char *desc;
49: };
50:
51: static const struct helptxt helptext[] = {
52: {" --abstract-unix-socket <path>",
53: "Connect via abstract Unix domain socket"},
54: {" --alt-svc <file name>",
55: "Enable alt-svc with this cache file"},
56: {" --anyauth",
57: "Pick any authentication method"},
58: {"-a, --append",
59: "Append to target file when uploading"},
60: {" --basic",
61: "Use HTTP Basic Authentication"},
62: {" --cacert <file>",
63: "CA certificate to verify peer against"},
64: {" --capath <dir>",
65: "CA directory to verify peer against"},
66: {"-E, --cert <certificate[:password]>",
67: "Client certificate file and password"},
68: {" --cert-status",
69: "Verify the status of the server certificate"},
70: {" --cert-type <type>",
71: "Certificate file type (DER/PEM/ENG)"},
72: {" --ciphers <list of ciphers>",
73: "SSL ciphers to use"},
74: {" --compressed",
75: "Request compressed response"},
76: {" --compressed-ssh",
77: "Enable SSH compression"},
78: {"-K, --config <file>",
79: "Read config from a file"},
80: {" --connect-timeout <seconds>",
81: "Maximum time allowed for connection"},
82: {" --connect-to <HOST1:PORT1:HOST2:PORT2>",
83: "Connect to host"},
84: {"-C, --continue-at <offset>",
85: "Resumed transfer offset"},
86: {"-b, --cookie <data|filename>",
87: "Send cookies from string/file"},
88: {"-c, --cookie-jar <filename>",
89: "Write cookies to <filename> after operation"},
90: {" --create-dirs",
91: "Create necessary local directory hierarchy"},
92: {" --crlf",
93: "Convert LF to CRLF in upload"},
94: {" --crlfile <file>",
95: "Get a CRL list in PEM format from the given file"},
96: {"-d, --data <data>",
97: "HTTP POST data"},
98: {" --data-ascii <data>",
99: "HTTP POST ASCII data"},
100: {" --data-binary <data>",
101: "HTTP POST binary data"},
102: {" --data-raw <data>",
103: "HTTP POST data, '@' allowed"},
104: {" --data-urlencode <data>",
105: "HTTP POST data url encoded"},
106: {" --delegation <LEVEL>",
107: "GSS-API delegation permission"},
108: {" --digest",
109: "Use HTTP Digest Authentication"},
110: {"-q, --disable",
111: "Disable .curlrc"},
112: {" --disable-eprt",
113: "Inhibit using EPRT or LPRT"},
114: {" --disable-epsv",
115: "Inhibit using EPSV"},
116: {" --disallow-username-in-url",
117: "Disallow username in url"},
118: {" --dns-interface <interface>",
119: "Interface to use for DNS requests"},
120: {" --dns-ipv4-addr <address>",
121: "IPv4 address to use for DNS requests"},
122: {" --dns-ipv6-addr <address>",
123: "IPv6 address to use for DNS requests"},
124: {" --dns-servers <addresses>",
125: "DNS server addrs to use"},
126: {" --doh-url <URL>",
127: "Resolve host names over DOH"},
128: {"-D, --dump-header <filename>",
129: "Write the received headers to <filename>"},
130: {" --egd-file <file>",
131: "EGD socket path for random data"},
132: {" --engine <name>",
133: "Crypto engine to use"},
134: {" --etag-save <file>",
135: "Get an ETag from response header and save it to a FILE"},
136: {" --etag-compare <file>",
137: "Get an ETag from a file and send a conditional request"},
138: {" --expect100-timeout <seconds>",
139: "How long to wait for 100-continue"},
140: {"-f, --fail",
141: "Fail silently (no output at all) on HTTP errors"},
142: {" --fail-early",
143: "Fail on first transfer error, do not continue"},
144: {" --false-start",
145: "Enable TLS False Start"},
146: {"-F, --form <name=content>",
147: "Specify multipart MIME data"},
148: {" --form-string <name=string>",
149: "Specify multipart MIME data"},
150: {" --ftp-account <data>",
151: "Account data string"},
152: {" --ftp-alternative-to-user <command>",
153: "String to replace USER [name]"},
154: {" --ftp-create-dirs",
155: "Create the remote dirs if not present"},
156: {" --ftp-method <method>",
157: "Control CWD usage"},
158: {" --ftp-pasv",
159: "Use PASV/EPSV instead of PORT"},
160: {"-P, --ftp-port <address>",
161: "Use PORT instead of PASV"},
162: {" --ftp-pret",
163: "Send PRET before PASV"},
164: {" --ftp-skip-pasv-ip",
165: "Skip the IP address for PASV"},
166: {" --ftp-ssl-ccc",
167: "Send CCC after authenticating"},
168: {" --ftp-ssl-ccc-mode <active/passive>",
169: "Set CCC mode"},
170: {" --ftp-ssl-control",
171: "Require SSL/TLS for FTP login, clear for transfer"},
172: {"-G, --get",
173: "Put the post data in the URL and use GET"},
174: {"-g, --globoff",
175: "Disable URL sequences and ranges using {} and []"},
176: {" --happy-eyeballs-timeout-ms <milliseconds>",
177: "How long to wait in milliseconds for IPv6 before trying IPv4"},
178: {" --haproxy-protocol",
179: "Send HAProxy PROXY protocol v1 header"},
180: {"-I, --head",
181: "Show document info only"},
182: {"-H, --header <header/@file>",
183: "Pass custom header(s) to server"},
184: {"-h, --help",
185: "This help text"},
186: {" --hostpubmd5 <md5>",
187: "Acceptable MD5 hash of the host public key"},
188: {" --http0.9",
189: "Allow HTTP 0.9 responses"},
190: {"-0, --http1.0",
191: "Use HTTP 1.0"},
192: {" --http1.1",
193: "Use HTTP 1.1"},
194: {" --http2",
195: "Use HTTP 2"},
196: {" --http2-prior-knowledge",
197: "Use HTTP 2 without HTTP/1.1 Upgrade"},
198: {" --http3",
199: "Use HTTP v3"},
200: {" --ignore-content-length",
201: "Ignore the size of the remote resource"},
202: {"-i, --include",
203: "Include protocol response headers in the output"},
204: {"-k, --insecure",
205: "Allow insecure server connections when using SSL"},
206: {" --interface <name>",
207: "Use network INTERFACE (or address)"},
208: {"-4, --ipv4",
209: "Resolve names to IPv4 addresses"},
210: {"-6, --ipv6",
211: "Resolve names to IPv6 addresses"},
212: {"-j, --junk-session-cookies",
213: "Ignore session cookies read from file"},
214: {" --keepalive-time <seconds>",
215: "Interval time for keepalive probes"},
216: {" --key <key>",
217: "Private key file name"},
218: {" --key-type <type>",
219: "Private key file type (DER/PEM/ENG)"},
220: {" --krb <level>",
221: "Enable Kerberos with security <level>"},
222: {" --libcurl <file>",
223: "Dump libcurl equivalent code of this command line"},
224: {" --limit-rate <speed>",
225: "Limit transfer speed to RATE"},
226: {"-l, --list-only",
227: "List only mode"},
228: {" --local-port <num/range>",
229: "Force use of RANGE for local port numbers"},
230: {"-L, --location",
231: "Follow redirects"},
232: {" --location-trusted",
233: "Like --location, and send auth to other hosts"},
234: {" --login-options <options>",
235: "Server login options"},
236: {" --mail-auth <address>",
237: "Originator address of the original email"},
238: {" --mail-from <address>",
239: "Mail from this address"},
240: {" --mail-rcpt <address>",
241: "Mail to this address"},
242: {" --mail-rcpt-allowfails",
243: "Allow RCPT TO command to fail for some recipients"},
244: {"-M, --manual",
245: "Display the full manual"},
246: {" --max-filesize <bytes>",
247: "Maximum file size to download"},
248: {" --max-redirs <num>",
249: "Maximum number of redirects allowed"},
250: {"-m, --max-time <seconds>",
251: "Maximum time allowed for the transfer"},
252: {" --metalink",
253: "Process given URLs as metalink XML file"},
254: {" --negotiate",
255: "Use HTTP Negotiate (SPNEGO) authentication"},
256: {"-n, --netrc",
257: "Must read .netrc for user name and password"},
258: {" --netrc-file <filename>",
259: "Specify FILE for netrc"},
260: {" --netrc-optional",
261: "Use either .netrc or URL"},
262: {"-:, --next",
263: "Make next URL use its separate set of options"},
264: {" --no-alpn",
265: "Disable the ALPN TLS extension"},
266: {"-N, --no-buffer",
267: "Disable buffering of the output stream"},
268: {" --no-keepalive",
269: "Disable TCP keepalive on the connection"},
270: {" --no-npn",
271: "Disable the NPN TLS extension"},
272: {" --no-progress-meter",
273: "Do not show the progress meter"},
274: {" --no-sessionid",
275: "Disable SSL session-ID reusing"},
276: {" --noproxy <no-proxy-list>",
277: "List of hosts which do not use proxy"},
278: {" --ntlm",
279: "Use HTTP NTLM authentication"},
280: {" --ntlm-wb",
281: "Use HTTP NTLM authentication with winbind"},
282: {" --oauth2-bearer <token>",
283: "OAuth 2 Bearer Token"},
284: {"-o, --output <file>",
285: "Write to file instead of stdout"},
286: {"-Z, --parallel",
287: "Perform transfers in parallel"},
288: {" --parallel-immediate",
289: "Do not wait for multiplexing (with --parallel)"},
290: {" --parallel-max",
291: "Maximum concurrency for parallel transfers"},
292: {" --pass <phrase>",
293: "Pass phrase for the private key"},
294: {" --path-as-is",
295: "Do not squash .. sequences in URL path"},
296: {" --pinnedpubkey <hashes>",
297: "FILE/HASHES Public key to verify peer against"},
298: {" --post301",
299: "Do not switch to GET after following a 301"},
300: {" --post302",
301: "Do not switch to GET after following a 302"},
302: {" --post303",
303: "Do not switch to GET after following a 303"},
304: {" --preproxy [protocol://]host[:port]",
305: "Use this proxy first"},
306: {"-#, --progress-bar",
307: "Display transfer progress as a bar"},
308: {" --proto <protocols>",
309: "Enable/disable PROTOCOLS"},
310: {" --proto-default <protocol>",
311: "Use PROTOCOL for any URL missing a scheme"},
312: {" --proto-redir <protocols>",
313: "Enable/disable PROTOCOLS on redirect"},
314: {"-x, --proxy [protocol://]host[:port]",
315: "Use this proxy"},
316: {" --proxy-anyauth",
317: "Pick any proxy authentication method"},
318: {" --proxy-basic",
319: "Use Basic authentication on the proxy"},
320: {" --proxy-cacert <file>",
321: "CA certificate to verify peer against for proxy"},
322: {" --proxy-capath <dir>",
323: "CA directory to verify peer against for proxy"},
324: {" --proxy-cert <cert[:passwd]>",
325: "Set client certificate for proxy"},
326: {" --proxy-cert-type <type>",
327: "Client certificate type for HTTPS proxy"},
328: {" --proxy-ciphers <list>",
329: "SSL ciphers to use for proxy"},
330: {" --proxy-crlfile <file>",
331: "Set a CRL list for proxy"},
332: {" --proxy-digest",
333: "Use Digest authentication on the proxy"},
334: {" --proxy-header <header/@file>",
335: "Pass custom header(s) to proxy"},
336: {" --proxy-insecure",
337: "Do HTTPS proxy connections without verifying the proxy"},
338: {" --proxy-key <key>",
339: "Private key for HTTPS proxy"},
340: {" --proxy-key-type <type>",
341: "Private key file type for proxy"},
342: {" --proxy-negotiate",
343: "Use HTTP Negotiate (SPNEGO) authentication on the proxy"},
344: {" --proxy-ntlm",
345: "Use NTLM authentication on the proxy"},
346: {" --proxy-pass <phrase>",
347: "Pass phrase for the private key for HTTPS proxy"},
348: {" --proxy-pinnedpubkey <hashes>",
349: "FILE/HASHES public key to verify proxy with"},
350: {" --proxy-service-name <name>",
351: "SPNEGO proxy service name"},
352: {" --proxy-ssl-allow-beast",
353: "Allow security flaw for interop for HTTPS proxy"},
354: {" --proxy-tls13-ciphers <list>",
355: "TLS 1.3 ciphersuites for proxy (OpenSSL)"},
356: {" --proxy-tlsauthtype <type>",
357: "TLS authentication type for HTTPS proxy"},
358: {" --proxy-tlspassword <string>",
359: "TLS password for HTTPS proxy"},
360: {" --proxy-tlsuser <name>",
361: "TLS username for HTTPS proxy"},
362: {" --proxy-tlsv1",
363: "Use TLSv1 for HTTPS proxy"},
364: {"-U, --proxy-user <user:password>",
365: "Proxy user and password"},
366: {" --proxy1.0 <host[:port]>",
367: "Use HTTP/1.0 proxy on given port"},
368: {"-p, --proxytunnel",
369: "Operate through an HTTP proxy tunnel (using CONNECT)"},
370: {" --pubkey <key>",
371: "SSH Public key file name"},
372: {"-Q, --quote",
373: "Send command(s) to server before transfer"},
374: {" --random-file <file>",
375: "File for reading random data from"},
376: {"-r, --range <range>",
377: "Retrieve only the bytes within RANGE"},
378: {" --raw",
379: "Do HTTP \"raw\"; no transfer decoding"},
380: {"-e, --referer <URL>",
381: "Referrer URL"},
382: {"-J, --remote-header-name",
383: "Use the header-provided filename"},
384: {"-O, --remote-name",
385: "Write output to a file named as the remote file"},
386: {" --remote-name-all",
387: "Use the remote file name for all URLs"},
388: {"-R, --remote-time",
389: "Set the remote file's time on the local output"},
390: {"-X, --request <command>",
391: "Specify request command to use"},
392: {" --request-target",
393: "Specify the target for this request"},
394: {" --resolve <host:port:address[,address]...>",
395: "Resolve the host+port to this address"},
396: {" --retry <num>",
397: "Retry request if transient problems occur"},
398: {" --retry-connrefused",
399: "Retry on connection refused (use with --retry)"},
400: {" --retry-delay <seconds>",
401: "Wait time between retries"},
402: {" --retry-max-time <seconds>",
403: "Retry only within this period"},
404: {" --sasl-authzid <identity> ",
405: "Use this identity to act as during SASL PLAIN authentication"},
406: {" --sasl-ir",
407: "Enable initial response in SASL authentication"},
408: {" --service-name <name>",
409: "SPNEGO service name"},
410: {"-S, --show-error",
411: "Show error even when -s is used"},
412: {"-s, --silent",
413: "Silent mode"},
414: {" --socks4 <host[:port]>",
415: "SOCKS4 proxy on given host + port"},
416: {" --socks4a <host[:port]>",
417: "SOCKS4a proxy on given host + port"},
418: {" --socks5 <host[:port]>",
419: "SOCKS5 proxy on given host + port"},
420: {" --socks5-basic",
421: "Enable username/password auth for SOCKS5 proxies"},
422: {" --socks5-gssapi",
423: "Enable GSS-API auth for SOCKS5 proxies"},
424: {" --socks5-gssapi-nec",
425: "Compatibility with NEC SOCKS5 server"},
426: {" --socks5-gssapi-service <name>",
427: "SOCKS5 proxy service name for GSS-API"},
428: {" --socks5-hostname <host[:port]>",
429: "SOCKS5 proxy, pass host name to proxy"},
430: {"-Y, --speed-limit <speed>",
431: "Stop transfers slower than this"},
432: {"-y, --speed-time <seconds>",
433: "Trigger 'speed-limit' abort after this time"},
434: {" --ssl",
435: "Try SSL/TLS"},
436: {" --ssl-allow-beast",
437: "Allow security flaw to improve interop"},
438: {" --ssl-no-revoke",
439: "Disable cert revocation checks (Schannel)"},
440: {" --ssl-revoke-best-effort",
441: "Ignore revocation offline or missing revocation list errors (Schannel)"},
442: {" --ssl-reqd",
443: "Require SSL/TLS"},
444: {"-2, --sslv2",
445: "Use SSLv2"},
446: {"-3, --sslv3",
447: "Use SSLv3"},
448: {" --stderr",
449: "Where to redirect stderr"},
450: {" --styled-output",
451: "Enable styled output for HTTP headers"},
452: {" --suppress-connect-headers",
453: "Suppress proxy CONNECT response headers"},
454: {" --tcp-fastopen",
455: "Use TCP Fast Open"},
456: {" --tcp-nodelay",
457: "Use the TCP_NODELAY option"},
458: {"-t, --telnet-option <opt=val>",
459: "Set telnet option"},
460: {" --tftp-blksize <value>",
461: "Set TFTP BLKSIZE option"},
462: {" --tftp-no-options",
463: "Do not send any TFTP options"},
464: {"-z, --time-cond <time>",
465: "Transfer based on a time condition"},
466: {" --tls-max <VERSION>",
467: "Set maximum allowed TLS version"},
468: {" --tls13-ciphers <list>",
469: "TLS 1.3 ciphersuites (OpenSSL)"},
470: {" --tlsauthtype <type>",
471: "TLS authentication type"},
472: {" --tlspassword",
473: "TLS password"},
474: {" --tlsuser <name>",
475: "TLS user name"},
476: {"-1, --tlsv1",
477: "Use TLSv1.0 or greater"},
478: {" --tlsv1.0",
479: "Use TLSv1.0 or greater"},
480: {" --tlsv1.1",
481: "Use TLSv1.1 or greater"},
482: {" --tlsv1.2",
483: "Use TLSv1.2 or greater"},
484: {" --tlsv1.3",
485: "Use TLSv1.3 or greater"},
486: {" --tr-encoding",
487: "Request compressed transfer encoding"},
488: {" --trace <file>",
489: "Write a debug trace to FILE"},
490: {" --trace-ascii <file>",
491: "Like --trace, but without hex output"},
492: {" --trace-time",
493: "Add time stamps to trace/verbose output"},
494: {" --unix-socket <path>",
495: "Connect through this Unix domain socket"},
496: {"-T, --upload-file <file>",
497: "Transfer local FILE to destination"},
498: {" --url <url>",
499: "URL to work with"},
500: {"-B, --use-ascii",
501: "Use ASCII/text transfer"},
502: {"-u, --user <user:password>",
503: "Server user and password"},
504: {"-A, --user-agent <name>",
505: "Send User-Agent <name> to server"},
506: {"-v, --verbose",
507: "Make the operation more talkative"},
508: {"-V, --version",
509: "Show version number and quit"},
510: {"-w, --write-out <format>",
511: "Use output FORMAT after completion"},
512: {" --xattr",
513: "Store metadata in extended file attributes"},
514: { NULL, NULL }
515: };
516:
517: #ifdef NETWARE
518: # define PRINT_LINES_PAUSE 23
519: #endif
520:
521: #ifdef __SYMBIAN32__
522: # define PRINT_LINES_PAUSE 16
523: #endif
524:
525: struct feat {
526: const char *name;
527: int bitmask;
528: };
529:
530: static const struct feat feats[] = {
531: {"AsynchDNS", CURL_VERSION_ASYNCHDNS},
532: {"Debug", CURL_VERSION_DEBUG},
533: {"TrackMemory", CURL_VERSION_CURLDEBUG},
534: {"IDN", CURL_VERSION_IDN},
535: {"IPv6", CURL_VERSION_IPV6},
536: {"Largefile", CURL_VERSION_LARGEFILE},
537: {"SSPI", CURL_VERSION_SSPI},
538: {"GSS-API", CURL_VERSION_GSSAPI},
539: {"Kerberos", CURL_VERSION_KERBEROS5},
540: {"SPNEGO", CURL_VERSION_SPNEGO},
541: {"NTLM", CURL_VERSION_NTLM},
542: {"NTLM_WB", CURL_VERSION_NTLM_WB},
543: {"SSL", CURL_VERSION_SSL},
544: {"libz", CURL_VERSION_LIBZ},
545: {"brotli", CURL_VERSION_BROTLI},
546: {"CharConv", CURL_VERSION_CONV},
547: {"TLS-SRP", CURL_VERSION_TLSAUTH_SRP},
548: {"HTTP2", CURL_VERSION_HTTP2},
549: {"HTTP3", CURL_VERSION_HTTP3},
550: {"UnixSockets", CURL_VERSION_UNIX_SOCKETS},
551: {"HTTPS-proxy", CURL_VERSION_HTTPS_PROXY},
552: {"MultiSSL", CURL_VERSION_MULTI_SSL},
553: {"PSL", CURL_VERSION_PSL},
554: {"alt-svc", CURL_VERSION_ALTSVC},
555: };
556:
557: void tool_help(void)
558: {
559: int i;
560: puts("Usage: curl [options...] <url>");
561: for(i = 0; helptext[i].opt; i++) {
562: printf(" %-19s %s\n", helptext[i].opt, helptext[i].desc);
563: #ifdef PRINT_LINES_PAUSE
564: if(i && ((i % PRINT_LINES_PAUSE) == 0))
565: tool_pressanykey();
566: #endif
567: }
568: }
569:
570: static int
571: featcomp(const void *p1, const void *p2)
572: {
573: /* The arguments to this function are "pointers to pointers to char", but
574: the comparison arguments are "pointers to char", hence the following cast
575: plus dereference */
576: #ifdef HAVE_STRCASECMP
577: return strcasecmp(* (char * const *) p1, * (char * const *) p2);
578: #elif defined(HAVE_STRCMPI)
579: return strcmpi(* (char * const *) p1, * (char * const *) p2);
580: #else
581: return strcmp(* (char * const *) p1, * (char * const *) p2);
582: #endif
583: }
584:
585: void tool_version_info(void)
586: {
587: const char *const *proto;
588:
589: printf(CURL_ID "%s\n", curl_version());
590: #ifdef CURL_PATCHSTAMP
591: printf("Release-Date: %s, security patched: %s\n",
592: LIBCURL_TIMESTAMP, CURL_PATCHSTAMP);
593: #else
594: printf("Release-Date: %s\n", LIBCURL_TIMESTAMP);
595: #endif
596: if(curlinfo->protocols) {
597: printf("Protocols: ");
598: for(proto = curlinfo->protocols; *proto; ++proto) {
599: printf("%s ", *proto);
600: }
601: puts(""); /* newline */
602: }
603: if(curlinfo->features) {
604: char *featp[ sizeof(feats) / sizeof(feats[0]) + 1];
605: size_t numfeat = 0;
606: unsigned int i;
607: printf("Features:");
608: for(i = 0; i < sizeof(feats)/sizeof(feats[0]); i++) {
609: if(curlinfo->features & feats[i].bitmask)
610: featp[numfeat++] = (char *)feats[i].name;
611: }
612: #ifdef USE_METALINK
613: featp[numfeat++] = (char *)"Metalink";
614: #endif
615: qsort(&featp[0], numfeat, sizeof(char *), featcomp);
616: for(i = 0; i< numfeat; i++)
617: printf(" %s", featp[i]);
618: puts(""); /* newline */
619: }
620: if(strcmp(CURL_VERSION, curlinfo->version)) {
621: printf("WARNING: curl and libcurl versions do not match. "
622: "Functionality may be affected.\n");
623: }
624: }
625:
626: void tool_list_engines(void)
627: {
628: CURL *curl = curl_easy_init();
629: struct curl_slist *engines = NULL;
630:
631: /* Get the list of engines */
632: curl_easy_getinfo(curl, CURLINFO_SSL_ENGINES, &engines);
633:
634: puts("Build-time engines:");
635: if(engines) {
636: for(; engines; engines = engines->next)
637: printf(" %s\n", engines->data);
638: }
639: else {
640: puts(" <none>");
641: }
642:
643: /* Cleanup the list of engines */
644: curl_slist_free_all(engines);
645: curl_easy_cleanup(curl);
646: }
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