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tool_getparam.c
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tool_getparam.c
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "tool_setup.h"
#include "strcase.h"
#define ENABLE_CURLX_PRINTF
/* use our own printf() functions */
#include "curlx.h"
#include "tool_binmode.h"
#include "tool_cfgable.h"
#include "tool_cb_prg.h"
#include "tool_filetime.h"
#include "tool_formparse.h"
#include "tool_getparam.h"
#include "tool_helpers.h"
#include "tool_libinfo.h"
#include "tool_msgs.h"
#include "tool_paramhlp.h"
#include "tool_parsecfg.h"
#include "tool_main.h"
#include "dynbuf.h"
#include "memdebug.h" /* keep this as LAST include */
#ifdef MSDOS
# define USE_WATT32
#endif
#define GetStr(str,val) do { \
if(*(str)) { \
free(*(str)); \
*(str) = NULL; \
} \
if((val)) { \
*(str) = strdup((val)); \
if(!(*(str))) \
return PARAM_NO_MEM; \
} \
} while(0)
struct LongShort {
const char *letter; /* short name option */
const char *lname; /* long name option */
enum {
ARG_NONE, /* stand-alone but not a boolean */
ARG_BOOL, /* accepts a --no-[name] prefix */
ARG_STRING, /* requires an argument */
ARG_FILENAME /* requires an argument, usually a file name */
} desc;
};
static const struct LongShort aliases[]= {
/* 'letter' strings with more than one character have *no* short option to
mention. */
{"*@", "url", ARG_STRING},
{"*4", "dns-ipv4-addr", ARG_STRING},
{"*6", "dns-ipv6-addr", ARG_STRING},
{"*a", "random-file", ARG_FILENAME},
{"*b", "egd-file", ARG_STRING},
{"*B", "oauth2-bearer", ARG_STRING},
{"*c", "connect-timeout", ARG_STRING},
{"*C", "doh-url" , ARG_STRING},
{"*d", "ciphers", ARG_STRING},
{"*D", "dns-interface", ARG_STRING},
{"*e", "disable-epsv", ARG_BOOL},
{"*f", "disallow-username-in-url", ARG_BOOL},
{"*E", "epsv", ARG_BOOL},
/* 'epsv' made like this to make --no-epsv and --epsv to work
although --disable-epsv is the documented option */
{"*F", "dns-servers", ARG_STRING},
{"*g", "trace", ARG_FILENAME},
{"*G", "npn", ARG_BOOL},
{"*h", "trace-ascii", ARG_FILENAME},
{"*H", "alpn", ARG_BOOL},
{"*i", "limit-rate", ARG_STRING},
{"*I", "rate", ARG_STRING},
{"*j", "compressed", ARG_BOOL},
{"*J", "tr-encoding", ARG_BOOL},
{"*k", "digest", ARG_BOOL},
{"*l", "negotiate", ARG_BOOL},
{"*m", "ntlm", ARG_BOOL},
{"*M", "ntlm-wb", ARG_BOOL},
{"*n", "basic", ARG_BOOL},
{"*o", "anyauth", ARG_BOOL},
#ifdef USE_WATT32
{"*p", "wdebug", ARG_BOOL},
#endif
{"*q", "ftp-create-dirs", ARG_BOOL},
{"*r", "create-dirs", ARG_BOOL},
{"*R", "create-file-mode", ARG_STRING},
{"*s", "max-redirs", ARG_STRING},
{"*t", "proxy-ntlm", ARG_BOOL},
{"*u", "crlf", ARG_BOOL},
{"*v", "stderr", ARG_FILENAME},
{"*V", "aws-sigv4", ARG_STRING},
{"*w", "interface", ARG_STRING},
{"*x", "krb", ARG_STRING},
{"*x", "krb4", ARG_STRING},
/* 'krb4' is the previous name */
{"*X", "haproxy-protocol", ARG_BOOL},
{"*y", "max-filesize", ARG_STRING},
{"*z", "disable-eprt", ARG_BOOL},
{"*Z", "eprt", ARG_BOOL},
/* 'eprt' made like this to make --no-eprt and --eprt to work
although --disable-eprt is the documented option */
{"*~", "xattr", ARG_BOOL},
{"$a", "ftp-ssl", ARG_BOOL},
/* 'ftp-ssl' deprecated name since 7.20.0 */
{"$a", "ssl", ARG_BOOL},
/* 'ssl' new option name in 7.20.0, previously this was ftp-ssl */
{"$b", "ftp-pasv", ARG_BOOL},
{"$c", "socks5", ARG_STRING},
{"$d", "tcp-nodelay", ARG_BOOL},
{"$e", "proxy-digest", ARG_BOOL},
{"$f", "proxy-basic", ARG_BOOL},
{"$g", "retry", ARG_STRING},
{"$V", "retry-connrefused", ARG_BOOL},
{"$h", "retry-delay", ARG_STRING},
{"$i", "retry-max-time", ARG_STRING},
{"$k", "proxy-negotiate", ARG_BOOL},
{"$l", "form-escape", ARG_BOOL},
{"$m", "ftp-account", ARG_STRING},
{"$n", "proxy-anyauth", ARG_BOOL},
{"$o", "trace-time", ARG_BOOL},
{"$p", "ignore-content-length", ARG_BOOL},
{"$q", "ftp-skip-pasv-ip", ARG_BOOL},
{"$r", "ftp-method", ARG_STRING},
{"$s", "local-port", ARG_STRING},
{"$t", "socks4", ARG_STRING},
{"$T", "socks4a", ARG_STRING},
{"$u", "ftp-alternative-to-user", ARG_STRING},
{"$v", "ftp-ssl-reqd", ARG_BOOL},
/* 'ftp-ssl-reqd' deprecated name since 7.20.0 */
{"$v", "ssl-reqd", ARG_BOOL},
/* 'ssl-reqd' new in 7.20.0, previously this was ftp-ssl-reqd */
{"$w", "sessionid", ARG_BOOL},
/* 'sessionid' listed as --no-sessionid in the help */
{"$x", "ftp-ssl-control", ARG_BOOL},
{"$y", "ftp-ssl-ccc", ARG_BOOL},
{"$j", "ftp-ssl-ccc-mode", ARG_STRING},
{"$z", "libcurl", ARG_STRING},
{"$#", "raw", ARG_BOOL},
{"$0", "post301", ARG_BOOL},
{"$1", "keepalive", ARG_BOOL},
/* 'keepalive' listed as --no-keepalive in the help */
{"$2", "socks5-hostname", ARG_STRING},
{"$3", "keepalive-time", ARG_STRING},
{"$4", "post302", ARG_BOOL},
{"$5", "noproxy", ARG_STRING},
{"$7", "socks5-gssapi-nec", ARG_BOOL},
{"$8", "proxy1.0", ARG_STRING},
{"$9", "tftp-blksize", ARG_STRING},
{"$A", "mail-from", ARG_STRING},
{"$B", "mail-rcpt", ARG_STRING},
{"$C", "ftp-pret", ARG_BOOL},
{"$D", "proto", ARG_STRING},
{"$E", "proto-redir", ARG_STRING},
{"$F", "resolve", ARG_STRING},
{"$G", "delegation", ARG_STRING},
{"$H", "mail-auth", ARG_STRING},
{"$I", "post303", ARG_BOOL},
{"$J", "metalink", ARG_BOOL},
{"$6", "sasl-authzid", ARG_STRING},
{"$K", "sasl-ir", ARG_BOOL },
{"$L", "test-event", ARG_BOOL},
{"$M", "unix-socket", ARG_FILENAME},
{"$N", "path-as-is", ARG_BOOL},
{"$O", "socks5-gssapi-service", ARG_STRING},
/* 'socks5-gssapi-service' merged with'proxy-service-name' and
deprecated since 7.49.0 */
{"$O", "proxy-service-name", ARG_STRING},
{"$P", "service-name", ARG_STRING},
{"$Q", "proto-default", ARG_STRING},
{"$R", "expect100-timeout", ARG_STRING},
{"$S", "tftp-no-options", ARG_BOOL},
{"$U", "connect-to", ARG_STRING},
{"$W", "abstract-unix-socket", ARG_FILENAME},
{"$X", "tls-max", ARG_STRING},
{"$Y", "suppress-connect-headers", ARG_BOOL},
{"$Z", "compressed-ssh", ARG_BOOL},
{"$~", "happy-eyeballs-timeout-ms", ARG_STRING},
{"$!", "retry-all-errors", ARG_BOOL},
{"0", "http1.0", ARG_NONE},
{"01", "http1.1", ARG_NONE},
{"02", "http2", ARG_NONE},
{"03", "http2-prior-knowledge", ARG_NONE},
{"04", "http3", ARG_NONE},
{"05", "http3-only", ARG_NONE},
{"09", "http0.9", ARG_BOOL},
{"1", "tlsv1", ARG_NONE},
{"10", "tlsv1.0", ARG_NONE},
{"11", "tlsv1.1", ARG_NONE},
{"12", "tlsv1.2", ARG_NONE},
{"13", "tlsv1.3", ARG_NONE},
{"1A", "tls13-ciphers", ARG_STRING},
{"1B", "proxy-tls13-ciphers", ARG_STRING},
{"2", "sslv2", ARG_NONE},
{"3", "sslv3", ARG_NONE},
{"4", "ipv4", ARG_NONE},
{"6", "ipv6", ARG_NONE},
{"a", "append", ARG_BOOL},
{"A", "user-agent", ARG_STRING},
{"b", "cookie", ARG_STRING},
{"ba", "alt-svc", ARG_STRING},
{"bb", "hsts", ARG_STRING},
{"B", "use-ascii", ARG_BOOL},
{"c", "cookie-jar", ARG_STRING},
{"C", "continue-at", ARG_STRING},
{"d", "data", ARG_STRING},
{"dr", "data-raw", ARG_STRING},
{"da", "data-ascii", ARG_STRING},
{"db", "data-binary", ARG_STRING},
{"de", "data-urlencode", ARG_STRING},
{"df", "json", ARG_STRING},
{"dg", "url-query", ARG_STRING},
{"D", "dump-header", ARG_FILENAME},
{"e", "referer", ARG_STRING},
{"E", "cert", ARG_FILENAME},
{"Ea", "cacert", ARG_FILENAME},
{"Eb", "cert-type", ARG_STRING},
{"Ec", "key", ARG_FILENAME},
{"Ed", "key-type", ARG_STRING},
{"Ee", "pass", ARG_STRING},
{"Ef", "engine", ARG_STRING},
{"Eg", "capath", ARG_FILENAME},
{"Eh", "pubkey", ARG_STRING},
{"Ei", "hostpubmd5", ARG_STRING},
{"EF", "hostpubsha256", ARG_STRING},
{"Ej", "crlfile", ARG_FILENAME},
{"Ek", "tlsuser", ARG_STRING},
{"El", "tlspassword", ARG_STRING},
{"Em", "tlsauthtype", ARG_STRING},
{"En", "ssl-allow-beast", ARG_BOOL},
{"Eo", "ssl-auto-client-cert", ARG_BOOL},
{"EO", "proxy-ssl-auto-client-cert", ARG_BOOL},
{"Ep", "pinnedpubkey", ARG_STRING},
{"EP", "proxy-pinnedpubkey", ARG_STRING},
{"Eq", "cert-status", ARG_BOOL},
{"EQ", "doh-cert-status", ARG_BOOL},
{"Er", "false-start", ARG_BOOL},
{"Es", "ssl-no-revoke", ARG_BOOL},
{"ES", "ssl-revoke-best-effort", ARG_BOOL},
{"Et", "tcp-fastopen", ARG_BOOL},
{"Eu", "proxy-tlsuser", ARG_STRING},
{"Ev", "proxy-tlspassword", ARG_STRING},
{"Ew", "proxy-tlsauthtype", ARG_STRING},
{"Ex", "proxy-cert", ARG_FILENAME},
{"Ey", "proxy-cert-type", ARG_STRING},
{"Ez", "proxy-key", ARG_FILENAME},
{"E0", "proxy-key-type", ARG_STRING},
{"E1", "proxy-pass", ARG_STRING},
{"E2", "proxy-ciphers", ARG_STRING},
{"E3", "proxy-crlfile", ARG_FILENAME},
{"E4", "proxy-ssl-allow-beast", ARG_BOOL},
{"E5", "login-options", ARG_STRING},
{"E6", "proxy-cacert", ARG_FILENAME},
{"E7", "proxy-capath", ARG_FILENAME},
{"E8", "proxy-insecure", ARG_BOOL},
{"E9", "proxy-tlsv1", ARG_NONE},
{"EA", "socks5-basic", ARG_BOOL},
{"EB", "socks5-gssapi", ARG_BOOL},
{"EC", "etag-save", ARG_FILENAME},
{"ED", "etag-compare", ARG_FILENAME},
{"EE", "curves", ARG_STRING},
{"f", "fail", ARG_BOOL},
{"fa", "fail-early", ARG_BOOL},
{"fb", "styled-output", ARG_BOOL},
{"fc", "mail-rcpt-allowfails", ARG_BOOL},
{"fd", "fail-with-body", ARG_BOOL},
{"fe", "remove-on-error", ARG_BOOL},
{"F", "form", ARG_STRING},
{"Fs", "form-string", ARG_STRING},
{"g", "globoff", ARG_BOOL},
{"G", "get", ARG_BOOL},
{"Ga", "request-target", ARG_STRING},
{"h", "help", ARG_BOOL},
{"H", "header", ARG_STRING},
{"Hp", "proxy-header", ARG_STRING},
{"i", "include", ARG_BOOL},
{"I", "head", ARG_BOOL},
{"j", "junk-session-cookies", ARG_BOOL},
{"J", "remote-header-name", ARG_BOOL},
{"k", "insecure", ARG_BOOL},
{"kd", "doh-insecure", ARG_BOOL},
{"K", "config", ARG_FILENAME},
{"l", "list-only", ARG_BOOL},
{"L", "location", ARG_BOOL},
{"Lt", "location-trusted", ARG_BOOL},
{"m", "max-time", ARG_STRING},
{"M", "manual", ARG_BOOL},
{"n", "netrc", ARG_BOOL},
{"no", "netrc-optional", ARG_BOOL},
{"ne", "netrc-file", ARG_FILENAME},
{"N", "buffer", ARG_BOOL},
/* 'buffer' listed as --no-buffer in the help */
{"o", "output", ARG_FILENAME},
{"O", "remote-name", ARG_BOOL},
{"Oa", "remote-name-all", ARG_BOOL},
{"Ob", "output-dir", ARG_STRING},
{"Oc", "clobber", ARG_BOOL},
{"p", "proxytunnel", ARG_BOOL},
{"P", "ftp-port", ARG_STRING},
{"q", "disable", ARG_BOOL},
{"Q", "quote", ARG_STRING},
{"r", "range", ARG_STRING},
{"R", "remote-time", ARG_BOOL},
{"s", "silent", ARG_BOOL},
{"S", "show-error", ARG_BOOL},
{"t", "telnet-option", ARG_STRING},
{"T", "upload-file", ARG_FILENAME},
{"u", "user", ARG_STRING},
{"U", "proxy-user", ARG_STRING},
{"v", "verbose", ARG_BOOL},
{"V", "version", ARG_BOOL},
{"w", "write-out", ARG_STRING},
{"x", "proxy", ARG_STRING},
{"xa", "preproxy", ARG_STRING},
{"X", "request", ARG_STRING},
{"Y", "speed-limit", ARG_STRING},
{"y", "speed-time", ARG_STRING},
{"z", "time-cond", ARG_STRING},
{"Z", "parallel", ARG_BOOL},
{"Zb", "parallel-max", ARG_STRING},
{"Zc", "parallel-immediate", ARG_BOOL},
{"#", "progress-bar", ARG_BOOL},
{"#m", "progress-meter", ARG_BOOL},
{":", "next", ARG_NONE},
};
/* Split the argument of -E to 'certname' and 'passphrase' separated by colon.
* We allow ':' and '\' to be escaped by '\' so that we can use certificate
* nicknames containing ':'. See <https://sourceforge.net/p/curl/bugs/1196/>
* for details. */
#ifndef UNITTESTS
static
#endif
void parse_cert_parameter(const char *cert_parameter,
char **certname,
char **passphrase)
{
size_t param_length = strlen(cert_parameter);
size_t span;
const char *param_place = NULL;
char *certname_place = NULL;
*certname = NULL;
*passphrase = NULL;
/* most trivial assumption: cert_parameter is empty */
if(param_length == 0)
return;
/* next less trivial: cert_parameter starts 'pkcs11:' and thus
* looks like a RFC7512 PKCS#11 URI which can be used as-is.
* Also if cert_parameter contains no colon nor backslash, this
* means no passphrase was given and no characters escaped */
if(curl_strnequal(cert_parameter, "pkcs11:", 7) ||
!strpbrk(cert_parameter, ":\\")) {
*certname = strdup(cert_parameter);
return;
}
/* deal with escaped chars; find unescaped colon if it exists */
certname_place = malloc(param_length + 1);
if(!certname_place)
return;
*certname = certname_place;
param_place = cert_parameter;
while(*param_place) {
span = strcspn(param_place, ":\\");
strncpy(certname_place, param_place, span);
param_place += span;
certname_place += span;
/* we just ate all the non-special chars. now we're on either a special
* char or the end of the string. */
switch(*param_place) {
case '\0':
break;
case '\\':
param_place++;
switch(*param_place) {
case '\0':
*certname_place++ = '\\';
break;
case '\\':
*certname_place++ = '\\';
param_place++;
break;
case ':':
*certname_place++ = ':';
param_place++;
break;
default:
*certname_place++ = '\\';
*certname_place++ = *param_place;
param_place++;
break;
}
break;
case ':':
/* Since we live in a world of weirdness and confusion, the win32
dudes can use : when using drive letters and thus c:\file:password
needs to work. In order not to break compatibility, we still use : as
separator, but we try to detect when it is used for a file name! On
windows. */
#ifdef WIN32
if((param_place == &cert_parameter[1]) &&
(cert_parameter[2] == '\\' || cert_parameter[2] == '/') &&
(ISALPHA(cert_parameter[0])) ) {
/* colon in the second column, followed by a backslash, and the
first character is an alphabetic letter:
this is a drive letter colon */
*certname_place++ = ':';
param_place++;
break;
}
#endif
/* escaped colons and Windows drive letter colons were handled
* above; if we're still here, this is a separating colon */
param_place++;
if(*param_place) {
*passphrase = strdup(param_place);
}
goto done;
}
}
done:
*certname_place = '\0';
}
/* Replace (in-place) '%20' by '+' according to RFC1866 */
static size_t replace_url_encoded_space_by_plus(char *url)
{
size_t orig_len = strlen(url);
size_t orig_index = 0;
size_t new_index = 0;
while(orig_index < orig_len) {
if((url[orig_index] == '%') &&
(url[orig_index + 1] == '2') &&
(url[orig_index + 2] == '0')) {
url[new_index] = '+';
orig_index += 3;
}
else{
if(new_index != orig_index) {
url[new_index] = url[orig_index];
}
orig_index++;
}
new_index++;
}
url[new_index] = 0; /* terminate string */
return new_index; /* new size */
}
static void
GetFileAndPassword(char *nextarg, char **file, char **password)
{
char *certname, *passphrase;
parse_cert_parameter(nextarg, &certname, &passphrase);
Curl_safefree(*file);
*file = certname;
if(passphrase) {
Curl_safefree(*password);
*password = passphrase;
}
}
/* Get a size parameter for '--limit-rate' or '--max-filesize'.
* We support a 'G', 'M' or 'K' suffix too.
*/
static ParameterError GetSizeParameter(struct GlobalConfig *global,
const char *arg,
const char *which,
curl_off_t *value_out)
{
char *unit;
curl_off_t value;
if(curlx_strtoofft(arg, &unit, 10, &value)) {
warnf(global, "invalid number specified for %s\n", which);
return PARAM_BAD_USE;
}
if(!*unit)
unit = (char *)"b";
else if(strlen(unit) > 1)
unit = (char *)"w"; /* unsupported */
switch(*unit) {
case 'G':
case 'g':
if(value > (CURL_OFF_T_MAX / (1024*1024*1024)))
return PARAM_NUMBER_TOO_LARGE;
value *= 1024*1024*1024;
break;
case 'M':
case 'm':
if(value > (CURL_OFF_T_MAX / (1024*1024)))
return PARAM_NUMBER_TOO_LARGE;
value *= 1024*1024;
break;
case 'K':
case 'k':
if(value > (CURL_OFF_T_MAX / 1024))
return PARAM_NUMBER_TOO_LARGE;
value *= 1024;
break;
case 'b':
case 'B':
/* for plain bytes, leave as-is */
break;
default:
warnf(global, "unsupported %s unit. Use G, M, K or B!\n", which);
return PARAM_BAD_USE;
}
*value_out = value;
return PARAM_OK;
}
#ifdef HAVE_WRITABLE_ARGV
static void cleanarg(argv_item_t str)
{
/* now that GetStr has copied the contents of nextarg, wipe the next
* argument out so that the username:password isn't displayed in the
* system process list */
if(str) {
size_t len = strlen(str);
memset(str, ' ', len);
}
}
#else
#define cleanarg(x)
#endif
/* --data-urlencode */
static ParameterError data_urlencode(struct GlobalConfig *global,
char *nextarg,
char **postp,
size_t *lenp)
{
/* [name]=[content], we encode the content part only
* [name]@[file name]
*
* Case 2: we first load the file using that name and then encode
* the content.
*/
ParameterError err;
const char *p = strchr(nextarg, '=');
size_t nlen;
char is_file;
char *postdata = NULL;
size_t size = 0;
if(!p)
/* there was no '=' letter, check for a '@' instead */
p = strchr(nextarg, '@');
if(p) {
nlen = p - nextarg; /* length of the name part */
is_file = *p++; /* pass the separator */
}
else {
/* neither @ nor =, so no name and it isn't a file */
nlen = is_file = 0;
p = nextarg;
}
if('@' == is_file) {
FILE *file;
/* a '@' letter, it means that a file name or - (stdin) follows */
if(!strcmp("-", p)) {
file = stdin;
set_binmode(stdin);
}
else {
file = fopen(p, "rb");
if(!file)
warnf(global,
"Couldn't read data from file \"%s\", this makes "
"an empty POST.\n", nextarg);
}
err = file2memory(&postdata, &size, file);
if(file && (file != stdin))
fclose(file);
if(err)
return err;
}
else {
GetStr(&postdata, p);
if(postdata)
size = strlen(postdata);
}
if(!postdata) {
/* no data from the file, point to a zero byte string to make this
get sent as a POST anyway */
postdata = strdup("");
if(!postdata)
return PARAM_NO_MEM;
size = 0;
}
else {
char *enc = curl_easy_escape(NULL, postdata, (int)size);
Curl_safefree(postdata); /* no matter if it worked or not */
if(enc) {
/* replace (in-place) '%20' by '+' according to RFC1866 */
size_t enclen = replace_url_encoded_space_by_plus(enc);
/* now make a string with the name from above and append the
encoded string */
size_t outlen = nlen + enclen + 2;
char *n = malloc(outlen);
if(!n) {
curl_free(enc);
return PARAM_NO_MEM;
}
if(nlen > 0) { /* only append '=' if we have a name */
msnprintf(n, outlen, "%.*s=%s", (int)nlen, nextarg, enc);
size = outlen-1;
}
else {
strcpy(n, enc);
size = outlen-2; /* since no '=' was inserted */
}
curl_free(enc);
postdata = n;
}
else
return PARAM_NO_MEM;
}
*postp = postdata;
*lenp = size;
return PARAM_OK;
}
static void sethttpver(struct GlobalConfig *global,
struct OperationConfig *config,
long httpversion)
{
if(config->httpversion &&
(config->httpversion != httpversion))
warnf(global, "Overrides previous HTTP version option\n");
config->httpversion = httpversion;
}
ParameterError getparameter(const char *flag, /* f or -long-flag */
char *nextarg, /* NULL if unset */
argv_item_t cleararg,
bool *usedarg, /* set to TRUE if the arg
has been used */
struct GlobalConfig *global,
struct OperationConfig *config)
{
char letter;
char subletter = '\0'; /* subletters can only occur on long options */
int rc;
const char *parse = NULL;
unsigned int j;
time_t now;
int hit = -1;
bool longopt = FALSE;
bool singleopt = FALSE; /* when true means '-o foo' used '-ofoo' */
ParameterError err;
bool toggle = TRUE; /* how to switch boolean options, on or off. Controlled
by using --OPTION or --no-OPTION */
static const char *redir_protos[] = {
"http",
"https",
"ftp",
"ftps",
NULL
};
#ifdef HAVE_WRITABLE_ARGV
argv_item_t clearthis = NULL;
#else
(void)cleararg;
#endif
*usedarg = FALSE; /* default is that we don't use the arg */
if(('-' != flag[0]) || ('-' == flag[1])) {
/* this should be a long name */
const char *word = ('-' == flag[0]) ? flag + 2 : flag;
size_t fnam = strlen(word);
int numhits = 0;
bool noflagged = FALSE;
if(!strncmp(word, "no-", 3)) {
/* disable this option but ignore the "no-" part when looking for it */
word += 3;
toggle = FALSE;
noflagged = TRUE;
}
for(j = 0; j < sizeof(aliases)/sizeof(aliases[0]); j++) {
if(curl_strnequal(aliases[j].lname, word, fnam)) {
longopt = TRUE;
numhits++;
if(curl_strequal(aliases[j].lname, word)) {
parse = aliases[j].letter;
hit = j;
numhits = 1; /* a single unique hit */
break;
}
parse = aliases[j].letter;
hit = j;
}
}
if(numhits > 1) {
/* this is at least the second match! */
return PARAM_OPTION_AMBIGUOUS;
}
if(hit < 0) {
return PARAM_OPTION_UNKNOWN;
}
if(noflagged && (aliases[hit].desc != ARG_BOOL))
/* --no- prefixed an option that isn't boolean! */
return PARAM_NO_NOT_BOOLEAN;
}
else {
flag++; /* prefixed with one dash, pass it */
hit = -1;
parse = flag;
}
do {
/* we can loop here if we have multiple single-letters */
if(!longopt) {
letter = (char)*parse;
subletter = '\0';
}
else {
letter = parse[0];
subletter = parse[1];
}
if(hit < 0) {
for(j = 0; j < sizeof(aliases)/sizeof(aliases[0]); j++) {
if(letter == aliases[j].letter[0]) {
hit = j;
break;
}
}
if(hit < 0) {
return PARAM_OPTION_UNKNOWN;
}
}
if(aliases[hit].desc >= ARG_STRING) {
/* this option requires an extra parameter */
if(!longopt && parse[1]) {
nextarg = (char *)&parse[1]; /* this is the actual extra parameter */
singleopt = TRUE; /* don't loop anymore after this */
}
else if(!nextarg)
return PARAM_REQUIRES_PARAMETER;
else {
#ifdef HAVE_WRITABLE_ARGV
clearthis = cleararg;
#endif
*usedarg = TRUE; /* mark it as used */
}
if((aliases[hit].desc == ARG_FILENAME) &&
(nextarg[0] == '-') && nextarg[1]) {
/* if the file name looks like a command line option */
warnf(global, "The file name argument '%s' looks like a flag.\n",
nextarg);
}
}
else if((aliases[hit].desc == ARG_NONE) && !toggle)
return PARAM_NO_PREFIX;
switch(letter) {
case '*': /* options without a short option */
switch(subletter) {
case '4': /* --dns-ipv4-addr */
if(!curlinfo->ares_num) /* c-ares is needed for this */
return PARAM_LIBCURL_DOESNT_SUPPORT;
/* addr in dot notation */
GetStr(&config->dns_ipv4_addr, nextarg);
break;
case '6': /* --dns-ipv6-addr */
if(!curlinfo->ares_num) /* c-ares is needed for this */
return PARAM_LIBCURL_DOESNT_SUPPORT;
/* addr in dot notation */
GetStr(&config->dns_ipv6_addr, nextarg);
break;
case 'a': /* random-file */
break;
case 'b': /* egd-file */
break;
case 'B': /* OAuth 2.0 bearer token */
GetStr(&config->oauth_bearer, nextarg);
cleanarg(clearthis);
config->authtype |= CURLAUTH_BEARER;
break;
case 'c': /* connect-timeout */
err = secs2ms(&config->connecttimeout_ms, nextarg);
if(err)
return err;
break;
case 'C': /* doh-url */
GetStr(&config->doh_url, nextarg);
if(config->doh_url && !config->doh_url[0])
/* if given a blank string, we make it NULL again */
Curl_safefree(config->doh_url);
break;
case 'd': /* ciphers */
GetStr(&config->cipher_list, nextarg);
break;
case 'D': /* --dns-interface */
if(!curlinfo->ares_num) /* c-ares is needed for this */
return PARAM_LIBCURL_DOESNT_SUPPORT;
/* interface name */
GetStr(&config->dns_interface, nextarg);
break;
case 'e': /* --disable-epsv */
config->disable_epsv = toggle;
break;
case 'f': /* --disallow-username-in-url */
config->disallow_username_in_url = toggle;
break;
case 'E': /* --epsv */
config->disable_epsv = (!toggle)?TRUE:FALSE;
break;
case 'F': /* --dns-servers */
if(!curlinfo->ares_num) /* c-ares is needed for this */
return PARAM_LIBCURL_DOESNT_SUPPORT;
/* IP addrs of DNS servers */
GetStr(&config->dns_servers, nextarg);
break;
case 'g': /* --trace */
GetStr(&global->trace_dump, nextarg);
if(global->tracetype && (global->tracetype != TRACE_BIN))
warnf(global, "--trace overrides an earlier trace/verbose option\n");
global->tracetype = TRACE_BIN;
break;
case 'G': /* --npn */
warnf(global, "--npn is no longer supported\n");
break;
case 'h': /* --trace-ascii */
GetStr(&global->trace_dump, nextarg);
if(global->tracetype && (global->tracetype != TRACE_ASCII))
warnf(global,
"--trace-ascii overrides an earlier trace/verbose option\n");
global->tracetype = TRACE_ASCII;
break;
case 'H': /* --alpn */
config->noalpn = (!toggle)?TRUE:FALSE;
break;
case 'i': /* --limit-rate */
{
curl_off_t value;
ParameterError pe = GetSizeParameter(global, nextarg, "rate", &value);
if(pe != PARAM_OK)
return pe;
config->recvpersecond = value;
config->sendpersecond = value;
}
break;
case 'I': /* --rate (request rate) */
{
/* support a few different suffixes, extract the suffix first, then
get the number and convert to per hour.
/s == per second
/m == per minute
/h == per hour (default)
/d == per day (24 hours)
*/
char *div = strchr(nextarg, '/');
char number[26];
long denominator;
long numerator = 60*60*1000; /* default per hour */
size_t numlen = div ? (size_t)(div - nextarg) : strlen(nextarg);
if(numlen > sizeof(number)-1)
return PARAM_NUMBER_TOO_LARGE;
strncpy(number, nextarg, numlen);
number[numlen] = 0;
err = str2unum(&denominator, number);
if(err)
return err;
if(denominator < 1)
return PARAM_BAD_USE;
if(div) {
char unit = div[1];
switch(unit) {
case 's': /* per second */
numerator = 1000;
break;
case 'm': /* per minute */
numerator = 60*1000;
break;
case 'h': /* per hour */
break;
case 'd': /* per day */
numerator = 24*60*60*1000;
break;
default:
errorf(global, "unsupported --rate unit\n");
return PARAM_BAD_USE;
}
}
global->ms_per_transfer = numerator/denominator;
}
break;
case 'j': /* --compressed */
if(toggle && !(feature_libz || feature_brotli || feature_zstd))
return PARAM_LIBCURL_DOESNT_SUPPORT;
config->encoding = toggle;
break;
case 'J': /* --tr-encoding */
config->tr_encoding = toggle;
break;
case 'k': /* --digest */
if(toggle)
config->authtype |= CURLAUTH_DIGEST;
else
config->authtype &= ~CURLAUTH_DIGEST;
break;
case 'l': /* --negotiate */
if(!toggle)
config->authtype &= ~CURLAUTH_NEGOTIATE;
else if(feature_spnego)
config->authtype |= CURLAUTH_NEGOTIATE;
else
return PARAM_LIBCURL_DOESNT_SUPPORT;
break;
case 'm': /* --ntlm */
if(!toggle)
config->authtype &= ~CURLAUTH_NTLM;
else if(feature_ntlm)
config->authtype |= CURLAUTH_NTLM;
else
return PARAM_LIBCURL_DOESNT_SUPPORT;
break;
case 'M': /* --ntlm-wb */
if(!toggle)
config->authtype &= ~CURLAUTH_NTLM_WB;
else if(feature_ntlm_wb)
config->authtype |= CURLAUTH_NTLM_WB;
else
return PARAM_LIBCURL_DOESNT_SUPPORT;
break;
case 'n': /* --basic for completeness */
if(toggle)
config->authtype |= CURLAUTH_BASIC;
else
config->authtype &= ~CURLAUTH_BASIC;
break;
case 'o': /* --anyauth, let libcurl pick it */
if(toggle)
config->authtype = CURLAUTH_ANY;
/* --no-anyauth simply doesn't touch it */
break;
#ifdef USE_WATT32
case 'p': /* --wdebug */
dbug_init();
break;
#endif
case 'q': /* --ftp-create-dirs */
config->ftp_create_dirs = toggle;
break;