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tool_operate.c
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tool_operate.c
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <[email protected]>, 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"
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#ifdef HAVE_LOCALE_H
# include <locale.h>
#endif
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#elif defined(HAVE_UNISTD_H)
# include <unistd.h>
#endif
#ifdef __VMS
# include <fabdef.h>
#endif
#ifdef __AMIGA__
# include <proto/dos.h>
#endif
#define ENABLE_CURLX_PRINTF
/* use our own printf() functions */
#include "curlx.h"
#include "tool_binmode.h"
#include "tool_cfgable.h"
#include "tool_cb_dbg.h"
#include "tool_cb_hdr.h"
#include "tool_cb_prg.h"
#include "tool_cb_rea.h"
#include "tool_cb_see.h"
#include "tool_cb_wrt.h"
#include "tool_dirhie.h"
#include "tool_doswin.h"
#include "tool_easysrc.h"
#include "tool_filetime.h"
#include "tool_getparam.h"
#include "tool_helpers.h"
#include "tool_findfile.h"
#include "tool_libinfo.h"
#include "tool_main.h"
#include "tool_msgs.h"
#include "tool_operate.h"
#include "tool_operhlp.h"
#include "tool_paramhlp.h"
#include "tool_parsecfg.h"
#include "tool_setopt.h"
#include "tool_sleep.h"
#include "tool_urlglob.h"
#include "tool_util.h"
#include "tool_writeout.h"
#include "tool_xattr.h"
#include "tool_vms.h"
#include "tool_help.h"
#include "tool_hugehelp.h"
#include "tool_progress.h"
#include "dynbuf.h"
#include "memdebug.h" /* keep this as LAST include */
#ifdef CURLDEBUG
/* libcurl's debug builds provide an extra function */
CURLcode curl_easy_perform_ev(CURL *easy);
#endif
#ifndef O_BINARY
/* since O_BINARY as used in bitmasks, setting it to zero makes it usable in
source code but yet it doesn't ruin anything */
# define O_BINARY 0
#endif
#define CURL_CA_CERT_ERRORMSG \
"More details here: https://curl.se/docs/sslcerts.html\n\n" \
"curl failed to verify the legitimacy of the server and therefore " \
"could not\nestablish a secure connection to it. To learn more about " \
"this situation and\nhow to fix it, please visit the web page mentioned " \
"above.\n"
static CURLcode single_transfer(struct GlobalConfig *global,
struct OperationConfig *config,
CURLSH *share,
bool capath_from_env,
bool *added);
static CURLcode create_transfer(struct GlobalConfig *global,
CURLSH *share,
bool *added);
static bool is_fatal_error(CURLcode code)
{
switch(code) {
case CURLE_FAILED_INIT:
case CURLE_OUT_OF_MEMORY:
case CURLE_UNKNOWN_OPTION:
case CURLE_FUNCTION_NOT_FOUND:
case CURLE_BAD_FUNCTION_ARGUMENT:
/* critical error */
return TRUE;
default:
break;
}
/* no error or not critical */
return FALSE;
}
/*
* Check if a given string is a PKCS#11 URI
*/
static bool is_pkcs11_uri(const char *string)
{
if(curl_strnequal(string, "pkcs11:", 7)) {
return TRUE;
}
else {
return FALSE;
}
}
#ifdef __VMS
/*
* get_vms_file_size does what it takes to get the real size of the file
*
* For fixed files, find out the size of the EOF block and adjust.
*
* For all others, have to read the entire file in, discarding the contents.
* Most posted text files will be small, and binary files like zlib archives
* and CD/DVD images should be either a STREAM_LF format or a fixed format.
*
*/
static curl_off_t vms_realfilesize(const char *name,
const struct_stat *stat_buf)
{
char buffer[8192];
curl_off_t count;
int ret_stat;
FILE * file;
/* !checksrc! disable FOPENMODE 1 */
file = fopen(name, "r"); /* VMS */
if(!file) {
return 0;
}
count = 0;
ret_stat = 1;
while(ret_stat > 0) {
ret_stat = fread(buffer, 1, sizeof(buffer), file);
if(ret_stat)
count += ret_stat;
}
fclose(file);
return count;
}
/*
*
* VmsSpecialSize checks to see if the stat st_size can be trusted and
* if not to call a routine to get the correct size.
*
*/
static curl_off_t VmsSpecialSize(const char *name,
const struct_stat *stat_buf)
{
switch(stat_buf->st_fab_rfm) {
case FAB$C_VAR:
case FAB$C_VFC:
return vms_realfilesize(name, stat_buf);
break;
default:
return stat_buf->st_size;
}
}
#endif /* __VMS */
#define BUFFER_SIZE (100*1024)
struct per_transfer *transfers; /* first node */
static struct per_transfer *transfersl; /* last node */
static curl_off_t all_pers;
/* add_per_transfer creates a new 'per_transfer' node in the linked
list of transfers */
static CURLcode add_per_transfer(struct per_transfer **per)
{
struct per_transfer *p;
p = calloc(sizeof(struct per_transfer), 1);
if(!p)
return CURLE_OUT_OF_MEMORY;
if(!transfers)
/* first entry */
transfersl = transfers = p;
else {
/* make the last node point to the new node */
transfersl->next = p;
/* make the new node point back to the formerly last node */
p->prev = transfersl;
/* move the last node pointer to the new entry */
transfersl = p;
}
*per = p;
all_xfers++; /* count total number of transfers added */
all_pers++;
return CURLE_OK;
}
/* Remove the specified transfer from the list (and free it), return the next
in line */
static struct per_transfer *del_per_transfer(struct per_transfer *per)
{
struct per_transfer *n;
struct per_transfer *p;
DEBUGASSERT(transfers);
DEBUGASSERT(transfersl);
DEBUGASSERT(per);
n = per->next;
p = per->prev;
if(p)
p->next = n;
else
transfers = n;
if(n)
n->prev = p;
else
transfersl = p;
free(per);
all_pers--;
return n;
}
static CURLcode pre_transfer(struct GlobalConfig *global,
struct per_transfer *per)
{
curl_off_t uploadfilesize = -1;
struct_stat fileinfo;
CURLcode result = CURLE_OK;
if(per->uploadfile && !stdin_upload(per->uploadfile)) {
/* VMS Note:
*
* Reading binary from files can be a problem... Only FIXED, VAR
* etc WITHOUT implied CC will work. Others need a \n appended to
* a line
*
* - Stat gives a size but this is UNRELIABLE in VMS. E.g.
* a fixed file with implied CC needs to have a byte added for every
* record processed, this can be derived from Filesize & recordsize
* for VARiable record files the records need to be counted! for
* every record add 1 for linefeed and subtract 2 for the record
* header for VARIABLE header files only the bare record data needs
* to be considered with one appended if implied CC
*/
#ifdef __VMS
/* Calculate the real upload size for VMS */
per->infd = -1;
if(stat(per->uploadfile, &fileinfo) == 0) {
fileinfo.st_size = VmsSpecialSize(uploadfile, &fileinfo);
switch(fileinfo.st_fab_rfm) {
case FAB$C_VAR:
case FAB$C_VFC:
case FAB$C_STMCR:
per->infd = open(per->uploadfile, O_RDONLY | O_BINARY);
break;
default:
per->infd = open(per->uploadfile, O_RDONLY | O_BINARY,
"rfm=stmlf", "ctx=stm");
}
}
if(per->infd == -1)
#else
per->infd = open(per->uploadfile, O_RDONLY | O_BINARY);
if((per->infd == -1) || fstat(per->infd, &fileinfo))
#endif
{
helpf(tool_stderr, "Can't open '%s'", per->uploadfile);
if(per->infd != -1) {
close(per->infd);
per->infd = STDIN_FILENO;
}
return CURLE_READ_ERROR;
}
per->infdopen = TRUE;
/* we ignore file size for char/block devices, sockets, etc. */
if(S_ISREG(fileinfo.st_mode))
uploadfilesize = fileinfo.st_size;
#ifdef DEBUGBUILD
/* allow dedicated test cases to override */
{
char *ev = getenv("CURL_UPLOAD_SIZE");
if(ev) {
int sz = atoi(ev);
uploadfilesize = (curl_off_t)sz;
}
}
#endif
if(uploadfilesize != -1) {
struct OperationConfig *config = per->config; /* for the macro below */
#ifdef CURL_DISABLE_LIBCURL_OPTION
(void)config;
(void)global;
#endif
my_setopt(per->curl, CURLOPT_INFILESIZE_LARGE, uploadfilesize);
}
}
per->uploadfilesize = uploadfilesize;
per->start = tvnow();
return result;
}
#ifdef __AMIGA__
static void AmigaSetComment(struct per_transfer *per,
CURLcode result)
{
struct OutStruct *outs = &per->outs;
if(!result && outs->s_isreg && outs->filename) {
/* Set the url (up to 80 chars) as comment for the file */
if(strlen(per->this_url) > 78)
per->this_url[79] = '\0';
SetComment(outs->filename, per->this_url);
}
}
#else
#define AmigaSetComment(x,y) Curl_nop_stmt
#endif
/* When doing serial transfers, we use a single fixed error area */
static char global_errorbuffer[CURL_ERROR_SIZE];
void single_transfer_cleanup(struct OperationConfig *config)
{
if(config) {
struct State *state = &config->state;
if(state->urls) {
/* Free list of remaining URLs */
glob_cleanup(state->urls);
state->urls = NULL;
}
Curl_safefree(state->outfiles);
Curl_safefree(state->httpgetfields);
Curl_safefree(state->uploadfile);
if(state->inglob) {
/* Free list of globbed upload files */
glob_cleanup(state->inglob);
state->inglob = NULL;
}
}
}
/*
* Call this after a transfer has completed.
*/
static CURLcode post_per_transfer(struct GlobalConfig *global,
struct per_transfer *per,
CURLcode result,
bool *retryp,
long *delay) /* milliseconds! */
{
struct OutStruct *outs = &per->outs;
CURL *curl = per->curl;
struct OperationConfig *config = per->config;
int rc;
if(!curl || !config)
return result;
*retryp = FALSE;
*delay = 0; /* for no retry, keep it zero */
if(per->infdopen)
close(per->infd);
#ifdef __VMS
if(is_vms_shell()) {
/* VMS DCL shell behavior */
if(global->silent && !global->showerror)
vms_show = VMSSTS_HIDE;
}
else
#endif
if(!config->synthetic_error && result &&
(!global->silent || global->showerror)) {
const char *msg = per->errorbuffer;
fprintf(tool_stderr, "curl: (%d) %s\n", result,
(msg && msg[0]) ? msg : curl_easy_strerror(result));
if(result == CURLE_PEER_FAILED_VERIFICATION)
fputs(CURL_CA_CERT_ERRORMSG, tool_stderr);
}
else if(config->failwithbody) {
/* if HTTP response >= 400, return error */
long code = 0;
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
if(code >= 400) {
if(!global->silent || global->showerror)
fprintf(tool_stderr,
"curl: (%d) The requested URL returned error: %ld\n",
CURLE_HTTP_RETURNED_ERROR, code);
result = CURLE_HTTP_RETURNED_ERROR;
}
}
/* Set file extended attributes */
if(!result && config->xattr && outs->fopened && outs->stream) {
rc = fwrite_xattr(curl, per->this_url, fileno(outs->stream));
if(rc)
warnf(config->global, "Error setting extended attributes on '%s': %s",
outs->filename, strerror(errno));
}
if(!result && !outs->stream && !outs->bytes) {
/* we have received no data despite the transfer was successful
==> force creation of an empty output file (if an output file
was specified) */
long cond_unmet = 0L;
/* do not create (or even overwrite) the file in case we get no
data because of unmet condition */
curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &cond_unmet);
if(!cond_unmet && !tool_create_output_file(outs, config))
result = CURLE_WRITE_ERROR;
}
if(!outs->s_isreg && outs->stream) {
/* Dump standard stream buffered data */
rc = fflush(outs->stream);
if(!result && rc) {
/* something went wrong in the writing process */
result = CURLE_WRITE_ERROR;
errorf(global, "Failed writing body");
}
}
#ifdef WIN32
/* Discard incomplete UTF-8 sequence buffered from body */
if(outs->utf8seq[0])
memset(outs->utf8seq, 0, sizeof(outs->utf8seq));
#endif
/* if retry-max-time is non-zero, make sure we haven't exceeded the
time */
if(per->retry_numretries &&
(!config->retry_maxtime ||
(tvdiff(tvnow(), per->retrystart) <
config->retry_maxtime*1000L)) ) {
enum {
RETRY_NO,
RETRY_ALL_ERRORS,
RETRY_TIMEOUT,
RETRY_CONNREFUSED,
RETRY_HTTP,
RETRY_FTP,
RETRY_LAST /* not used */
} retry = RETRY_NO;
long response = 0;
if((CURLE_OPERATION_TIMEDOUT == result) ||
(CURLE_COULDNT_RESOLVE_HOST == result) ||
(CURLE_COULDNT_RESOLVE_PROXY == result) ||
(CURLE_FTP_ACCEPT_TIMEOUT == result))
/* retry timeout always */
retry = RETRY_TIMEOUT;
else if(config->retry_connrefused &&
(CURLE_COULDNT_CONNECT == result)) {
long oserrno = 0;
curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &oserrno);
if(ECONNREFUSED == oserrno)
retry = RETRY_CONNREFUSED;
}
else if((CURLE_OK == result) ||
((config->failonerror || config->failwithbody) &&
(CURLE_HTTP_RETURNED_ERROR == result))) {
/* If it returned OK. _or_ failonerror was enabled and it
returned due to such an error, check for HTTP transient
errors to retry on. */
const char *scheme;
curl_easy_getinfo(curl, CURLINFO_SCHEME, &scheme);
scheme = proto_token(scheme);
if(scheme == proto_http || scheme == proto_https) {
/* This was HTTP(S) */
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
switch(response) {
case 408: /* Request Timeout */
case 429: /* Too Many Requests (RFC6585) */
case 500: /* Internal Server Error */
case 502: /* Bad Gateway */
case 503: /* Service Unavailable */
case 504: /* Gateway Timeout */
retry = RETRY_HTTP;
/*
* At this point, we have already written data to the output
* file (or terminal). If we write to a file, we must rewind
* or close/re-open the file so that the next attempt starts
* over from the beginning.
*
* TODO: similar action for the upload case. We might need
* to start over reading from a previous point if we have
* uploaded something when this was returned.
*/
break;
}
}
} /* if CURLE_OK */
else if(result) {
const char *scheme;
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
curl_easy_getinfo(curl, CURLINFO_SCHEME, &scheme);
scheme = proto_token(scheme);
if((scheme == proto_ftp || scheme == proto_ftps) && response / 100 == 4)
/*
* This is typically when the FTP server only allows a certain
* amount of users and we are not one of them. All 4xx codes
* are transient.
*/
retry = RETRY_FTP;
}
if(result && !retry && config->retry_all_errors)
retry = RETRY_ALL_ERRORS;
if(retry) {
long sleeptime = 0;
curl_off_t retry_after = 0;
static const char * const m[]={
NULL,
"(retrying all errors)",
": timeout",
": connection refused",
": HTTP error",
": FTP error"
};
sleeptime = per->retry_sleep;
if(RETRY_HTTP == retry) {
curl_easy_getinfo(curl, CURLINFO_RETRY_AFTER, &retry_after);
if(retry_after) {
/* store in a 'long', make sure it doesn't overflow */
if(retry_after > LONG_MAX/1000)
sleeptime = LONG_MAX;
else
sleeptime = (long)retry_after * 1000; /* milliseconds */
/* if adding retry_after seconds to the process would exceed the
maximum time allowed for retrying, then exit the retries right
away */
if(config->retry_maxtime) {
curl_off_t seconds = tvdiff(tvnow(), per->retrystart)/1000;
if((CURL_OFF_T_MAX - retry_after < seconds) ||
(seconds + retry_after > config->retry_maxtime)) {
warnf(config->global, "The Retry-After: time would "
"make this command line exceed the maximum allowed time "
"for retries.");
goto noretry;
}
}
}
}
warnf(config->global, "Problem %s. "
"Will retry in %ld seconds. "
"%ld retries left.",
m[retry], sleeptime/1000L, per->retry_numretries);
per->retry_numretries--;
if(!config->retry_delay) {
per->retry_sleep *= 2;
if(per->retry_sleep > RETRY_SLEEP_MAX)
per->retry_sleep = RETRY_SLEEP_MAX;
}
if(outs->bytes && outs->filename && outs->stream) {
/* We have written data to an output file, we truncate file
*/
notef(config->global,
"Throwing away %" CURL_FORMAT_CURL_OFF_T " bytes",
outs->bytes);
fflush(outs->stream);
/* truncate file at the position where we started appending */
#ifdef HAVE_FTRUNCATE
if(ftruncate(fileno(outs->stream), outs->init)) {
/* when truncate fails, we can't just append as then we'll
create something strange, bail out */
errorf(config->global, "Failed to truncate file");
return CURLE_WRITE_ERROR;
}
/* now seek to the end of the file, the position where we
just truncated the file in a large file-safe way */
rc = fseek(outs->stream, 0, SEEK_END);
#else
/* ftruncate is not available, so just reposition the file
to the location we would have truncated it. This won't
work properly with large files on 32-bit systems, but
most of those will have ftruncate. */
rc = fseek(outs->stream, (long)outs->init, SEEK_SET);
#endif
if(rc) {
errorf(config->global, "Failed seeking to end of file");
return CURLE_WRITE_ERROR;
}
outs->bytes = 0; /* clear for next round */
}
*retryp = TRUE;
*delay = sleeptime;
return CURLE_OK;
}
} /* if retry_numretries */
noretry:
if((global->progressmode == CURL_PROGRESS_BAR) &&
per->progressbar.calls)
/* if the custom progress bar has been displayed, we output a
newline here */
fputs("\n", per->progressbar.out);
/* Close the outs file */
if(outs->fopened && outs->stream) {
rc = fclose(outs->stream);
if(!result && rc) {
/* something went wrong in the writing process */
result = CURLE_WRITE_ERROR;
errorf(config->global, "curl: (%d) Failed writing body", result);
}
if(result && config->rm_partial) {
notef(global, "Removing output file: %s", outs->filename);
unlink(outs->filename);
}
}
AmigaSetComment(per, result);
/* File time can only be set _after_ the file has been closed */
if(!result && config->remote_time && outs->s_isreg && outs->filename) {
/* Ask libcurl if we got a remote file time */
curl_off_t filetime = -1;
curl_easy_getinfo(curl, CURLINFO_FILETIME_T, &filetime);
setfiletime(filetime, outs->filename, global);
}
/* Write the --write-out data before cleanup but after result is final */
if(config->writeout)
ourWriteOut(config, per, result);
/* Close function-local opened file descriptors */
if(per->heads.fopened && per->heads.stream)
fclose(per->heads.stream);
if(per->heads.alloc_filename)
Curl_safefree(per->heads.filename);
if(per->etag_save.fopened && per->etag_save.stream)
fclose(per->etag_save.stream);
if(per->etag_save.alloc_filename)
Curl_safefree(per->etag_save.filename);
curl_easy_cleanup(per->curl);
if(outs->alloc_filename)
free(outs->filename);
free(per->this_url);
free(per->outfile);
free(per->uploadfile);
if(global->parallel)
free(per->errorbuffer);
return result;
}
static char *ipfs_gateway(void)
{
char *gateway = NULL;
char *ipfs_path = NULL;
char *gateway_composed_file_path = NULL;
FILE *gateway_file = NULL;
gateway = getenv("IPFS_GATEWAY");
/* Gateway is found from environment variable. */
if(gateway && *gateway) {
char *composed_gateway = NULL;
bool add_slash = (gateway[strlen(gateway) - 1] != '/');
composed_gateway = aprintf("%s%s", gateway, (add_slash) ? "/" : "");
if(composed_gateway) {
gateway = aprintf("%s", composed_gateway);
Curl_safefree(composed_gateway);
}
return gateway;
}
else
/* a blank string does not count */
gateway = NULL;
/* Try to find the gateway in the IPFS data folder. */
ipfs_path = getenv("IPFS_PATH");
if(!ipfs_path) {
char *home = getenv("HOME");
if(home && *home)
ipfs_path = aprintf("%s/.ipfs/", home);
/* fallback to "~/.ipfs", as that's the default location. */
}
if(!ipfs_path) {
Curl_safefree(gateway);
Curl_safefree(ipfs_path);
return NULL;
}
gateway_composed_file_path = aprintf("%sgateway", ipfs_path);
if(!gateway_composed_file_path) {
Curl_safefree(gateway);
Curl_safefree(ipfs_path);
return NULL;
}
gateway_file = fopen(gateway_composed_file_path, FOPEN_READTEXT);
Curl_safefree(gateway_composed_file_path);
if(gateway_file) {
char *buf = NULL;
if((PARAM_OK == file2string(&buf, gateway_file)) && buf && *buf) {
bool add_slash = (buf[strlen(buf) - 1] != '/');
gateway = aprintf("%s%s", buf, (add_slash) ? "/" : "");
}
Curl_safefree(buf);
if(gateway_file)
fclose(gateway_file);
if(!gateway) {
Curl_safefree(gateway);
Curl_safefree(ipfs_path);
return NULL;
}
Curl_safefree(ipfs_path);
return gateway;
}
Curl_safefree(gateway);
Curl_safefree(ipfs_path);
return NULL;
}
/*
* Rewrite ipfs://<cid> and ipns://<cid> to a HTTP(S)
* URL that can be handled by an IPFS gateway.
*/
static CURLcode ipfs_url_rewrite(CURLU *uh, const char *protocol, char **url,
struct OperationConfig *config)
{
CURLcode result = CURLE_URL_MALFORMAT;
CURLUcode urlGetResult;
char *gateway = NULL;
char *cid = NULL;
char *pathbuffer = NULL;
CURLU *ipfsurl = curl_url();
if(!ipfsurl) {
result = CURLE_FAILED_INIT;
goto clean;
}
urlGetResult = curl_url_get(uh, CURLUPART_HOST, &cid, CURLU_URLDECODE);
if(urlGetResult) {
goto clean;
}
if(!cid) {
goto clean;
}
/* We might have a --ipfs-gateway argument. Check it first and use it. Error
* if we do have something but if it's an invalid url.
*/
if(config->ipfs_gateway) {
if(curl_url_set(ipfsurl, CURLUPART_URL, config->ipfs_gateway,
CURLU_GUESS_SCHEME)
== CURLUE_OK) {
gateway = strdup(config->ipfs_gateway);
if(!gateway) {
result = CURLE_URL_MALFORMAT;
goto clean;
}
}
else {
result = CURLE_BAD_FUNCTION_ARGUMENT;
goto clean;
}
}
else {
gateway = ipfs_gateway();
if(!gateway) {
result = CURLE_FILE_COULDNT_READ_FILE;
goto clean;
}
if(curl_url_set(ipfsurl, CURLUPART_URL, gateway, CURLU_GUESS_SCHEME
| CURLU_NON_SUPPORT_SCHEME) != CURLUE_OK) {
goto clean;
}
}
pathbuffer = aprintf("%s/%s", protocol, cid);
if(!pathbuffer) {
goto clean;
}
if(curl_url_set(ipfsurl, CURLUPART_PATH, pathbuffer, CURLU_URLENCODE)
!= CURLUE_OK) {
goto clean;
}
/* Free whatever it has now, rewriting is next */
Curl_safefree(*url);
if(curl_url_get(ipfsurl, CURLUPART_URL, url, CURLU_URLENCODE)
!= CURLUE_OK) {
goto clean;
}
result = CURLE_OK;
clean:
free(gateway);
curl_free(cid);
curl_free(pathbuffer);
curl_url_cleanup(ipfsurl);
switch(result) {
case CURLE_URL_MALFORMAT:
helpf(tool_stderr, "malformed URL. Visit https://curl.se/"
"docs/ipfs.html#gateway-file-and-"
"environment-variable for more "
"information");
break;
case CURLE_FILE_COULDNT_READ_FILE:
helpf(tool_stderr, "IPFS automatic gateway detection "
"failure. Visit https://curl.se/docs/"
"ipfs.html#malformed-gateway-url for "
"more information");
break;
case CURLE_BAD_FUNCTION_ARGUMENT:
helpf(tool_stderr, "--ipfs-gateway argument results in "
"malformed URL. Visit https://curl.se/"
"docs/ipfs.html#malformed-gateway-url "
"for more information");
break;
default:
break;
}
return result;
}
/*
* Return the protocol token for the scheme used in the given URL
*/
static CURLcode url_proto(char **url,
struct OperationConfig *config,
char **scheme)
{
CURLcode result = CURLE_OK;
CURLU *uh = curl_url();
const char *proto = NULL;
*scheme = NULL;
if(uh) {
if(*url) {
char *schemep = NULL;
if(!curl_url_set(uh, CURLUPART_URL, *url,
CURLU_GUESS_SCHEME | CURLU_NON_SUPPORT_SCHEME) &&
!curl_url_get(uh, CURLUPART_SCHEME, &schemep,
CURLU_DEFAULT_SCHEME)) {
if(curl_strequal(schemep, proto_ipfs) ||
curl_strequal(schemep, proto_ipns)) {
result = ipfs_url_rewrite(uh, schemep, url, config);
/* short-circuit proto_token, we know it's ipfs or ipns */
if(curl_strequal(schemep, proto_ipfs))
proto = proto_ipfs;
else if(curl_strequal(schemep, proto_ipns))
proto = proto_ipns;
}
else
proto = proto_token(schemep);
curl_free(schemep);
}
}
curl_url_cleanup(uh);
}
*scheme = (char *) (proto? proto: "???"); /* Never match if not found. */
return result;
}
/* create the next (singular) transfer */
static CURLcode single_transfer(struct GlobalConfig *global,
struct OperationConfig *config,
CURLSH *share,
bool capath_from_env,
bool *added)
{
CURLcode result = CURLE_OK;
struct getout *urlnode;
bool orig_noprogress = global->noprogress;
bool orig_isatty = global->isatty;
struct State *state = &config->state;
char *httpgetfields = state->httpgetfields;
*added = FALSE; /* not yet */
if(config->postfields) {
if(config->use_httpget) {
if(!httpgetfields) {
/* Use the postfields data for an HTTP get */
httpgetfields = state->httpgetfields = strdup(config->postfields);
Curl_safefree(config->postfields);
if(!httpgetfields) {
errorf(global, "out of memory");
result = CURLE_OUT_OF_MEMORY;
}
else if(SetHTTPrequest(config,
(config->no_body?HTTPREQ_HEAD:HTTPREQ_GET),
&config->httpreq)) {
result = CURLE_FAILED_INIT;
}
}
}
else {
if(SetHTTPrequest(config, HTTPREQ_SIMPLEPOST, &config->httpreq))
result = CURLE_FAILED_INIT;
}
if(result) {
single_transfer_cleanup(config);
return result;
}
}
if(!state->urlnode) {
/* first time caller, setup things */
state->urlnode = config->url_list;
state->infilenum = 1;
}
while(config->state.urlnode) {
static bool warn_more_options = FALSE;
char *infiles; /* might be a glob pattern */
struct URLGlob *inglob = state->inglob;
urlnode = config->state.urlnode;
/* urlnode->url is the full URL (it might be NULL) */
if(!urlnode->url) {
/* This node has no URL. Free node data without destroying the
node itself nor modifying next pointer and continue to next */
Curl_safefree(urlnode->outfile);
Curl_safefree(urlnode->infile);
urlnode->flags = 0;
config->state.urlnode = urlnode->next;
state->up = 0;
if(!warn_more_options) {
/* only show this once */