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trurl.c
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trurl.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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <curl/curl.h>
#include <curl/mprintf.h>
#include <locale.h> /* for setlocale() */
#include "version.h"
#ifdef _MSC_VER
#define strncasecmp _strnicmp
#define strcasecmp _stricmp
#define strdup _strdup
#endif
#if CURL_AT_LEAST_VERSION(7,81,0)
#define SUPPORTS_ZONEID
#endif
#if CURL_AT_LEAST_VERSION(7,80,0)
#define SUPPORTS_URL_STRERROR
#endif
#if CURL_AT_LEAST_VERSION(7,78,0)
#define SUPPORTS_ALLOW_SPACE
#else
#define CURLU_ALLOW_SPACE 0
#endif
#if CURL_AT_LEAST_VERSION(7,88,0)
#define SUPPORTS_PUNYCODE
#endif
#define OUTPUT_URL 0 /* default */
#define OUTPUT_SCHEME 1
#define OUTPUT_USER 2
#define OUTPUT_PASSWORD 3
#define OUTPUT_OPTIONS 4
#define OUTPUT_HOST 5
#define OUTPUT_PORT 6
#define OUTPUT_PATH 7
#define OUTPUT_QUERY 8
#define OUTPUT_FRAGMENT 9
#define OUTPUT_ZONEID 10
#define NUM_COMPONENTS 11 /* including "url" */
#define PROGNAME "trurl"
#define REPLACE_NULL_BYTE '.' /* for query:key extractions */
struct var {
const char *name;
CURLUPart part;
};
static const struct var variables[] = {
{"url", CURLUPART_URL},
{"scheme", CURLUPART_SCHEME},
{"user", CURLUPART_USER},
{"password", CURLUPART_PASSWORD},
{"options", CURLUPART_OPTIONS},
{"host", CURLUPART_HOST},
{"port", CURLUPART_PORT},
{"path", CURLUPART_PATH},
{"query", CURLUPART_QUERY},
{"fragment", CURLUPART_FRAGMENT},
{"zoneid", CURLUPART_ZONEID},
{NULL, 0}
};
#define ERROR_PREFIX PROGNAME " error: "
#define WARN_PREFIX PROGNAME " note: "
/* error codes */
#define ERROR_FILE 1
#define ERROR_APPEND 2 /* --append mistake */
#define ERROR_ARG 3 /* a command line option misses its argument */
#define ERROR_FLAG 4 /* a command line flag mistake */
#define ERROR_SET 5 /* a --set problem */
#define ERROR_MEM 6 /* out of memory */
#define ERROR_URL 7 /* could not get a URL out of the set components */
#define ERROR_TRIM 8 /* a --trim problem */
#define ERROR_BADURL 9 /* if --verify is set and the URL cannot parse */
#define ERROR_GET 10 /* bad --get syntax */
#define ERROR_ITER 11 /* bad --iterate syntax */
#ifndef SUPPORTS_URL_STRERROR
/* provide a fake local mockup */
static char *curl_url_strerror(CURLUcode error)
{
static char buffer[128];
curl_msnprintf(buffer, sizeof(buffer), "URL error %u", (int)error);
return buffer;
}
#endif
static void warnf(char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fputs(WARN_PREFIX, stderr);
vfprintf(stderr, fmt, ap);
fputs("\n", stderr);
va_end(ap);
}
static void errorf(int exit_code, char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fputs(ERROR_PREFIX, stderr);
vfprintf(stderr, fmt, ap);
fputs("\n" ERROR_PREFIX "Try " PROGNAME " -h for help\n", stderr);
va_end(ap);
exit(exit_code);
}
#define VERIFY(op, exit_code, ...) \
do { \
if(op->verify) { \
/* make sure to terminate the JSON array */ \
if(op->jsonout) \
fputs("\n]\n", stdout); \
errorf(exit_code, __VA_ARGS__); \
} else \
warnf(__VA_ARGS__); \
} while(0)
static void help(void)
{
int i;
fputs(
"Usage: " PROGNAME " [options] [URL]\n"
" -a, --append [component]=[data] - append data to component\n"
" --accept-space - give in to this URL abuse\n"
" -f, --url-file [file/-] - read URLs from file or stdin\n"
" -g, --get [{component}s] - output component(s)\n"
" -h, --help - this help\n"
" --iterate [component]=[list] - create multiple URL outputs\n"
" --json - output URL as JSON\n"
" --query-separator [letter] - if something else than '&'\n"
" --redirect [URL] - redirect to this\n"
" -s, --set [component]=[data] - set component content\n"
" --sort-query - alpha-sort the query pairs\n"
" --trim [component]=[what] - trim component\n"
" --url [URL] - URL to work with\n"
" -v, --version - show version\n"
" --verify - return error on (first) bad URL\n"
" URL COMPONENTS:\n"
" ", stdout);
for(i = 0; i< NUM_COMPONENTS; i++) {
printf("%s%s", i?", ":"", variables[i].name);
}
fputs("\n", stdout);
exit(0);
}
static void show_version(void)
{
curl_version_info_data *data = curl_version_info(CURLVERSION_NOW);
fprintf(stdout, "%s version %s libcurl/%s [built-with %s]\n",
PROGNAME, TRURL_VERSION_TXT, data->version, LIBCURL_VERSION);
exit(0);
}
struct iterinfo {
CURLU *uh;
const char *part;
size_t plen;
char *ptr;
unsigned int varmask; /* sets 1 << [component] */
};
struct option {
struct curl_slist *url_list;
struct curl_slist *append_path;
struct curl_slist *append_query;
struct curl_slist *set_list;
struct curl_slist *trim_list;
struct curl_slist *iter_list;
const char *redirect;
const char *qsep;
const char *format;
FILE *url;
bool urlopen;
bool jsonout;
bool verify;
bool accept_space;
bool sort_query;
bool end_of_options;
unsigned char output;
/* -- stats -- */
unsigned int urls;
};
#define MAX_QPAIRS 1000
char *qpairs[MAX_QPAIRS]; /* encoded */
char *qpairsdec[MAX_QPAIRS]; /* decoded */
int nqpairs; /* how many is stored */
static char *strurldecode(const char *url, int inlength, int *outlength)
{
return curl_easy_unescape(NULL, inlength ? url : "", inlength,
outlength);
}
static void urladd(struct option *o, const char *url)
{
struct curl_slist *n;
n = curl_slist_append(o->url_list, url);
if(n)
o->url_list = n;
}
/* read URLs from this file/stdin */
static void urlfile(struct option *o, const char *file)
{
FILE *f;
if(o->url)
errorf(ERROR_FLAG, "only one --url-file is supported");
if(strcmp("-", file)) {
f = fopen(file, "rt");
if(!f)
errorf(ERROR_FILE, "--url-file %s not found", file);
o->urlopen = true;
}
else
f = stdin;
o->url = f;
}
static void pathadd(struct option *o, const char *path)
{
struct curl_slist *n;
char *urle = curl_easy_escape(NULL, path, 0);
if(urle) {
n = curl_slist_append(o->append_path, urle);
if(n) {
o->append_path = n;
}
curl_free(urle);
}
}
static void queryadd(struct option *o, const char *query)
{
struct curl_slist *n;
char *p = strchr(query, '=');
char *urle;
if(p) {
/* URL encode the left and the right side of the '=' separately */
char *f1 = curl_easy_escape(NULL, query, p - query);
char *f2 = curl_easy_escape(NULL, p + 1, 0);
urle = curl_maprintf("%s=%s", f1, f2);
curl_free(f1);
curl_free(f2);
}
else
urle = curl_easy_escape(NULL, query, 0);
if(urle) {
n = curl_slist_append(o->append_query, urle);
if(n) {
o->append_query = n;
}
curl_free(urle);
}
}
static void appendadd(struct option *o,
const char *arg)
{
if(!strncmp("path=", arg, 5))
pathadd(o, arg + 5);
else if(!strncmp("query=", arg, 6))
queryadd(o, arg + 6);
else
errorf(ERROR_APPEND, "--append unsupported component: %s", arg);
}
static void setadd(struct option *o,
const char *set) /* [component]=[data] */
{
struct curl_slist *n;
n = curl_slist_append(o->set_list, set);
if(n)
o->set_list = n;
}
static void iteradd(struct option *o,
const char *iter) /* [component]=[data] */
{
struct curl_slist *n;
n = curl_slist_append(o->iter_list, iter);
if(n)
o->iter_list = n;
}
static void trimadd(struct option *o,
const char *trim) /* [component]=[data] */
{
struct curl_slist *n;
n = curl_slist_append(o->trim_list, trim);
if(n)
o->trim_list = n;
}
static bool checkoptarg(const char *str,
const char *given,
const char *arg)
{
if(!strcmp(str, given)) {
if(!arg)
errorf(ERROR_ARG, "Missing argument for %s", str);
return true;
}
return false;
}
static int getarg(struct option *op,
const char *flag,
const char *arg,
bool *usedarg)
{
*usedarg = false;
if(!strcmp("--", flag))
op->end_of_options = true;
else if(!strcmp("-v", flag) || !strcmp("--version", flag))
show_version();
else if(!strcmp("-h", flag) || !strcmp("--help", flag))
help();
else if(checkoptarg("--url", flag, arg)) {
urladd(op, arg);
*usedarg = true;
}
else if(checkoptarg("-f", flag, arg) ||
checkoptarg("--url-file", flag, arg)) {
urlfile(op, arg);
*usedarg = true;
}
else if(checkoptarg("-a", flag, arg) || checkoptarg("--append", flag, arg)) {
appendadd(op, arg);
*usedarg = true;
}
else if(checkoptarg("-s", flag, arg) || checkoptarg("--set", flag, arg)) {
setadd(op, arg);
*usedarg = true;
}
else if(checkoptarg("--iterate", flag, arg)) {
iteradd(op, arg);
*usedarg = true;
}
else if(checkoptarg("--redirect", flag, arg)) {
if(op->redirect)
errorf(ERROR_FLAG, "only one --redirect is supported");
op->redirect = arg;
*usedarg = true;
}
else if(checkoptarg("--query-separator", flag, arg)) {
if(op->qsep)
errorf(ERROR_FLAG, "only one --query-separator is supported");
if(strlen(arg) != 1)
errorf(ERROR_FLAG, "only single-letter query separators are supported");
op->qsep = arg;
*usedarg = true;
}
else if(checkoptarg("--trim", flag, arg)) {
trimadd(op, arg);
*usedarg = true;
}
else if(checkoptarg("-g", flag, arg) || checkoptarg("--get", flag, arg)) {
if(op->format)
errorf(ERROR_FLAG, "only one --get is supported");
if(op->jsonout)
errorf(ERROR_FLAG, "--get is mututally exclusive with --json");
op->format = arg;
*usedarg = true;
}
else if(!strcmp("--json", flag)) {
if(op->format)
errorf(ERROR_FLAG, "--json is mututally exclusive with --get");
op->jsonout = true;
}
else if(!strcmp("--verify", flag))
op->verify = true;
else if(!strcmp("--accept-space", flag)) {
#ifdef SUPPORTS_ALLOW_SPACE
op->accept_space = true;
#else
warnf("built with too old libcurl version, --accept-space does not work");
#endif
}
else if(!strcmp("--sort-query", flag))
op->sort_query = true;
else
return 1; /* unrecognized option */
return 0;
}
static void showqkey(const char *key, size_t klen, bool urldecode,
bool showall)
{
int i;
bool shown = false;
char **qp = urldecode ? qpairsdec : qpairs;
for(i = 0; i< nqpairs; i++) {
if(!strncmp(key, qp[i], klen) &&
(qp[i][klen] == '=')) {
if(shown)
fputc(' ', stdout);
fputs(&qp[i][klen + 1], stdout);
if(!showall)
break;
shown = true;
}
}
}
/* component to variable pointer */
static const struct var *comp2var(const char *name, size_t vlen)
{
int i;
for(i = 0; variables[i].name; i++)
if((strlen(variables[i].name) == vlen) &&
!strncmp(name, variables[i].name, vlen))
return &variables[i];
return NULL;
}
static void get(struct option *op, CURLU *uh)
{
FILE *stream = stdout;
const char *ptr = op->format;
bool done = false;
char startbyte = 0;
char endbyte = 0;
while(ptr && *ptr && !done) {
if(!startbyte && (('{' == *ptr) || ('[' == *ptr))) {
startbyte = *ptr;
if('{' == *ptr)
endbyte = '}';
else
endbyte = ']';
}
if(startbyte == *ptr) {
if(startbyte == ptr[1]) {
/* an escaped {-letter */
fputc(startbyte, stream);
ptr += 2;
}
else {
/* this is meant as a variable to output */
char *end;
char *cl;
size_t vlen;
bool urldecode = true;
#ifdef SUPPORTS_PUNYCODE
bool punycode = false;
#endif
bool handled = true;
bool rawport = false;
end = strchr(ptr, endbyte);
ptr++; /* pass the { */
if(!end) {
/* syntax error */
fputc(startbyte, stream);
continue;
}
/* {path} {:path} */
if(*ptr == ':') {
urldecode = false;
ptr++;
}
vlen = end - ptr;
/* check for the last colon within here */
cl = memchr(ptr, ':', vlen);
if(cl) {
/* deduct the colon part */
if(!strncmp(ptr, "query-all:", 10))
showqkey(&ptr[10], end - cl - 1, urldecode, true);
else if(!strncmp(ptr, "query:", 6))
showqkey(&ptr[6], end - cl - 1, urldecode, false);
else if(!strncmp(ptr, "puny:", 5)) {
#ifndef SUPPORTS_PUNYCODE
warnf("Built without punycode support");
#else
punycode = true;
#endif
ptr = cl + 1;
vlen = end - ptr;
handled = false;
}
else if(!strncmp(ptr, "raw:", 4)) {
rawport = true;
ptr = cl + 1;
vlen = end - ptr;
handled = false;
}
else
errorf(ERROR_GET, "Bad --get syntax: %s", ptr);
}
else
handled = false;
if(!handled) {
const struct var *v = comp2var(ptr, vlen);
if(v) {
char *nurl;
CURLUcode rc;
rc = curl_url_get(uh, v->part, &nurl,
(rawport?0:CURLU_DEFAULT_PORT)|
CURLU_NO_DEFAULT_PORT|
#ifdef SUPPORTS_PUNYCODE
(punycode?CURLU_PUNYCODE:0)|
#endif
(urldecode?CURLU_URLDECODE:0));
switch(rc) {
case CURLUE_OK:
fprintf(stream, "%s", nurl);
curl_free(nurl);
case CURLUE_NO_SCHEME:
case CURLUE_NO_USER:
case CURLUE_NO_PASSWORD:
case CURLUE_NO_OPTIONS:
case CURLUE_NO_HOST:
case CURLUE_NO_PORT:
case CURLUE_NO_QUERY:
case CURLUE_NO_FRAGMENT:
#ifdef SUPPORTS_ZONEID
case CURLUE_NO_ZONEID:
#endif
/* silently ignore */
break;
default:
fprintf(stderr, PROGNAME ": %s (%s)\n", curl_url_strerror(rc),
v->name);
break;
}
}
}
ptr = end + 1; /* pass the end */
}
}
else if('\\' == *ptr && ptr[1]) {
switch(ptr[1]) {
case 'r':
fputc('\r', stream);
break;
case 'n':
fputc('\n', stream);
break;
case 't':
fputc('\t', stream);
break;
case '\\':
fputc('\\', stream);
break;
case '{':
fputc('{', stream);
break;
case '[':
fputc('[', stream);
break;
default:
/* unknown, just output this */
fputc(*ptr, stream);
fputc(ptr[1], stream);
break;
}
ptr += 2;
}
else {
fputc(*ptr, stream);
ptr++;
}
}
fputc('\n', stream);
}
static const struct var *setone(CURLU *uh, const char *setline)
{
char *ptr = strchr(setline, '=');
const struct var *v = NULL;
if(ptr && (ptr > setline)) {
size_t vlen = ptr - setline;
bool urlencode = true;
bool found = false;
if(ptr[-1] == ':') {
urlencode = false;
vlen--;
}
v = comp2var(setline, vlen);
if(v) {
CURLUcode rc;
rc = curl_url_set(uh, v->part, ptr[1] ? &ptr[1] : NULL,
CURLU_NON_SUPPORT_SCHEME|
(urlencode ? CURLU_URLENCODE : 0) );
if(rc)
warnf("Error setting %s: %s", v->name, curl_url_strerror(rc));
found = true;
}
if(!found)
errorf(ERROR_SET, "unknown component: %.*s", (int)vlen, setline);
}
else
errorf(ERROR_SET, "invalid --set syntax: %s", setline);
return v;
}
static unsigned int set(CURLU *uh,
struct option *o)
{
struct curl_slist *node;
unsigned int mask = 0;
for(node = o->set_list; node; node = node->next) {
const struct var *v;
char *set = node->data;
v = setone(uh, set);
if(v) {
if(mask & (1 << v->part))
errorf(ERROR_SET, "duplicate --set for component %s", v->name);
mask |= (1 << v->part);
}
}
return mask; /* the set components */
}
static void jsonString(FILE *stream, const char *in, size_t len,
bool lowercase)
{
const unsigned char *i = (unsigned char *)in;
const char *in_end = &in[len];
fputc('\"', stream);
for(; i < (unsigned char *)in_end; i++) {
switch(*i) {
case '\\':
fputs("\\\\", stream);
break;
case '\"':
fputs("\\\"", stream);
break;
case '\b':
fputs("\\b", stream);
break;
case '\f':
fputs("\\f", stream);
break;
case '\n':
fputs("\\n", stream);
break;
case '\r':
fputs("\\r", stream);
break;
case '\t':
fputs("\\t", stream);
break;
default:
if(*i < 32)
fprintf(stream, "u%04x", *i);
else {
char out = *i;
if(lowercase && (out >= 'A' && out <= 'Z'))
/* do not use tolower() since that's locale specific */
out |= ('a' - 'A');
fputc(out, stream);
}
break;
}
}
fputc('\"', stream);
}
static void json(struct option *o, CURLU *uh)
{
int i;
bool first = true;
(void)o;
printf("%s {\n", o->urls?",\n":"");
for(i = 0; variables[i].name; i++) {
char *nurl;
CURLUcode rc = curl_url_get(uh, variables[i].part, &nurl,
(i?CURLU_DEFAULT_PORT:0)|
CURLU_URLDECODE);
if(!rc) {
if(!first)
fputs(",\n", stdout);
first = false;
printf(" \"%s\": ", variables[i].name);
jsonString(stdout, nurl, strlen(nurl), false);
curl_free(nurl);
}
/* if we're printing the port, show if it's explicit or not */
if(variables[i].part == CURLUPART_PORT) {
rc = curl_url_get(uh, variables[i].part, &nurl,
CURLU_URLDECODE);
fputs(",\n", stdout);
printf(" \"raw_port\": ");
if(!rc) {
jsonString(stdout, nurl, strlen(nurl), false);
curl_free(nurl);
}
else
jsonString(stdout, "", 0, false);
}
}
first = true;
if(nqpairs) {
int j;
fputs(",\n \"params\": [\n", stdout);
for(j = 0 ; j < nqpairs; j++) {
const char *sep = strchr(qpairsdec[j], '=');
const char *value = sep ? sep + 1 : "";
/* don't print out empty/trimmed values */
if(!qpairsdec[j][0])
continue;
if(!first)
fputs(",\n", stdout);
first = false;
fputs(" {\n \"key\": ", stdout);
jsonString(stdout, qpairsdec[j],
sep ? (size_t)(sep - qpairsdec[j]) : strlen(qpairsdec[j]),
false);
fputs(",\n \"value\": ", stdout);
jsonString(stdout, value, strlen(value), false);
fputs("\n }", stdout);
}
fputs("\n ]", stdout);
}
fputs("\n }", stdout);
}
/* --trim query="utm_*" */
static void trim(struct option *o)
{
struct curl_slist *node;
for(node = o->trim_list; node; node = node->next) {
char *instr = node->data;
if(strncmp(instr, "query", 5))
/* for now we can only trim query components */
errorf(ERROR_TRIM, "Unsupported trim component: %s", instr);
char *ptr = strchr(instr, '=');
if(ptr && (ptr > instr)) {
/* 'ptr' should be a fixed string or a pattern ending with an
asterisk */
size_t inslen;
bool pattern;
int i;
ptr++; /* pass the = */
inslen = strlen(ptr);
pattern = ptr[inslen - 1] == '*';
if(pattern)
inslen--;
for(i = 0 ; i < nqpairs; i++) {
char *q = qpairs[i];
char *sep = strchr(q, '=');
size_t qlen;
if(sep)
qlen = sep - q;
else
qlen = strlen(q);
if((pattern && (inslen <= qlen) &&
!strncasecmp(q, ptr, inslen)) ||
(!pattern && (inslen == qlen) &&
!strncasecmp(q, ptr, inslen))) {
/* this qpair should be stripped out */
free(qpairs[i]);
free(qpairsdec[i]);
qpairs[i] = strdup(""); /* marked as deleted */
qpairsdec[i] = strdup(""); /* marked as deleted */
}
}
}
}
}
/* memdup the amount and add a trailing zero */
static char *memdupzero(char *source, size_t len)
{
char *p = malloc(len + 1);
if(p) {
memcpy(p, source, len);
p[len] = 0;
return p;
}
return NULL;
}
/* URL decode the pair and return it in an allocated chunk */
static char *memdupdec(char *source, size_t len)
{
char *sep = memchr(source, '=', len);
char *left = NULL;
char *right = NULL;
char *str, *dup;
int leftlen = 0;
int rightlen = 0;
left = strurldecode(source, sep ? (size_t)(sep - source) : len,
&leftlen);
if(sep) {
char *p;
int plen;
right = strurldecode(sep + 1, len - (sep - source) - 1, &rightlen);
/* convert null bytes to periods */
for(plen = rightlen, p = right; plen; plen--, p++) {
if(!*p)
*p = REPLACE_NULL_BYTE;
}
}
str = curl_maprintf("%.*s%s%.*s", leftlen, left,
right ? "=":"",
rightlen, right?right:"");
curl_free(right);
curl_free(left);
dup = strdup(str);
curl_free(str);
return dup;
}
static void freeqpairs(void)
{
int i;
for(i = 0; i<nqpairs; i++) {
free(qpairs[i]);
qpairs[i] = NULL;
free(qpairsdec[i]);
qpairsdec[i] = NULL;
}
nqpairs = 0;
}
/* store the pair both encoded and decoded */
static char *addqpair(char *pair, size_t len)
{
char *p = NULL;
char *pdec = NULL;
if(nqpairs < MAX_QPAIRS) {
p = memdupzero(pair, len);
pdec = memdupdec(pair, len);
if(p && pdec) {
qpairs[nqpairs] = p;
qpairsdec[nqpairs] = pdec;
nqpairs++;
}
}
else
warnf("too many query pairs");
return p;
}
/* convert the query string into an array of name=data pair */
static void extractqpairs(CURLU *uh, struct option *o)
{
char *q = NULL;
memset(qpairs, 0, sizeof(qpairs));
nqpairs = 0;
/* extract the query */
if(!curl_url_get(uh, CURLUPART_QUERY, &q, 0)) {
char *p = q;
char *amp;
while(*p) {
size_t len;
amp = strchr(p, o->qsep[0]);
if(!amp)
len = strlen(p);
else
len = amp - p;
addqpair(p, len);
if(amp)
p = amp + 1;
else
break;
}
}
curl_free(q);
}
static void qpair2query(CURLU *uh, struct option *o)
{
int i;
int rc;
char *nq = NULL;
char *oldnq;
for(i = 0; i<nqpairs; i++) {
oldnq = nq;
nq = curl_maprintf("%s%s%s", nq?nq:"",
(nq && *nq && *qpairs[i])? o->qsep: "", qpairs[i]);
curl_free(oldnq);
}
if(nq) {
rc = curl_url_set(uh, CURLUPART_QUERY, nq, 0);
if(rc)
warnf("internal problem");
}
curl_free(nq);
}
/* sort case insensitively */
static int cmpfunc(const void *p1, const void *p2)
{
return strcasecmp(*(const char **)p1,
*(const char **)p2);
}
static void sortquery(struct option *o)
{
if(o->sort_query) {
/* not these two lists may no longer be the same order after the sort */
qsort(&qpairs[0], nqpairs, sizeof(char *), cmpfunc);
qsort(&qpairsdec[0], nqpairs, sizeof(char *), cmpfunc);
}
}
static CURLUcode urlfromstring(struct option *o,
CURLU *uh,
const char *url)
{
return curl_url_set(uh, CURLUPART_URL, url,
CURLU_GUESS_SCHEME|CURLU_NON_SUPPORT_SCHEME|
(o->accept_space ?
(CURLU_ALLOW_SPACE|CURLU_URLENCODE) : 0));
}
static void singleurl(struct option *o,
const char *url, /* might be NULL */
struct iterinfo *iinfo,
struct curl_slist *iter)
{
CURLU *uh = iinfo->uh;
if(!uh) {
uh = curl_url();
if(!uh)
errorf(ERROR_MEM, "out of memory");
if(url) {
CURLUcode rc = urlfromstring(o, uh, url);
if(rc) {
VERIFY(o, ERROR_BADURL, "%s [%s]", curl_url_strerror(rc), url);
return;
}
else {
if(o->redirect)
curl_url_set(uh, CURLUPART_URL, o->redirect,
CURLU_GUESS_SCHEME|CURLU_NON_SUPPORT_SCHEME);
}
}
}
do {
char iterbuf[1024];
struct curl_slist *p;
bool url_is_invalid = false;
unsigned setmask = 0;
/* set everything */
setmask = set(uh, o);
if(iter) {
/* "part=item1 item2 item2" */
const char *part;
size_t plen;
const char *w;
size_t wlen;
char *sep;
bool urlencode = true;
const struct var *v;