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/*
* COPYRIGHT
*
* pcb-rnd, interactive printed circuit board design
* Copyright (C) 2016, 2017, 2018 Tibor 'Igor2' Palinkas
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Contact:
* Project page: http://repo.hu/projects/pcb-rnd
* lead developer: http://repo.hu/projects/pcb-rnd/contact.html
* mailing list: pcb-rnd (at) list.repo.hu (send "subscribe")
*/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "config.h"
#include "wget_common.h"
#include <librnd/core/compat_misc.h>
#include <librnd/core/safe_fs.h>
#include "globalconst.h"
#include <librnd/plugins/lib_wget/lib_wget.h>
int fp_wget_offline = 0;
enum {
FCTX_INVALID = 0,
FCTX_POPEN,
FCTX_FOPEN,
FCTX_NOP
};
static int mkdirp(const char *dir)
{
int len;
char buff[RND_PATH_MAX+32];
len = rnd_snprintf(buff, sizeof(buff), "mkdir -p '%s'", dir);
if (len >= sizeof(buff)-1)
return -1;
return rnd_system(NULL, buff);
}
int fp_wget_open(const char *url, const char *cache_path, FILE **f, int *fctx, fp_get_mode mode)
{
char *cmd;
int ul = strlen(url), cl = strlen(cache_path);
int update = (mode & FP_WGET_UPDATE);
cmd = malloc(ul*2+cl+32);
*fctx = FCTX_INVALID;
if (cache_path == NULL) {
if (f == NULL)
goto error;
if (!fp_wget_offline)
*f = pcb_wget_popen(url, update, NULL);
if (*f == NULL)
goto error;
*fctx = FCTX_POPEN;
}
else {
char *cdir;
cdir = strstr(url, "://");
if (cdir == NULL)
goto error;
cdir += 3;
{
char *end;
sprintf(cmd, "%s/%s", cache_path, cdir);
end = strrchr(cmd, '/');
if (end != NULL) {
*end = '\0';
if (mkdirp(cmd) != 0)
goto error;
*end = '/';
}
}
if ((!fp_wget_offline) && !(mode & FP_WGET_OFFLINE)) {
int res;
sprintf(cmd, "%s/%s", cache_path, cdir);
res = pcb_wget_disk(url, cmd, update, NULL);
/* rnd_trace("------res=%d\n", res); */
if ((res != 0) && (res != 768)) { /* some versions of wget will return error on -c if the file doesn't need update; try to guess whether it's really an error */
/* when wget fails, a 0-long file might be left there - remove it so it won't block new downloads */
rnd_remove(NULL, cmd);
}
}
if (f != NULL) {
sprintf(cmd, "%s/%s", cache_path, cdir);
*f = rnd_fopen(NULL, cmd, "rb");
if (*f == NULL)
goto error;
*fctx = FCTX_FOPEN;
}
else
*fctx = FCTX_NOP;
}
free(cmd);
return 0;
error:;
free(cmd);
return -1;
}
int fp_wget_close(FILE **f, int *fctx)
{
if (*fctx == FCTX_NOP)
return 0;
if (*f == NULL)
return -1;
switch(*fctx) {
case FCTX_POPEN: rnd_pclose(*f); *f = NULL; return 0;
case FCTX_FOPEN: fclose(*f); *f = NULL; return 0;
}
return -1;
}
char *load_md5_sum(FILE *f)
{
char *s, sum[64];
if (f == NULL)
return NULL;
*sum = '\0';
fgets(sum, sizeof(sum), f);
sum[sizeof(sum)-1] = '\0';
for(s = sum;; s++) {
if ((*s == '\0') || (isspace(*s))) {
if ((s - sum) == 32) {
*s = '\0';
return rnd_strdup(sum);
}
else
return NULL;
}
if (isdigit(*s))
continue;
if ((*s >= 'a') && (*s <= 'f'))
continue;
if ((*s >= 'A') && (*s <= 'F'))
continue;
return NULL;
}
}
int md5_cmp_free(const char *last_fn, char *md5_last, char *md5_new)
{
int changed = 0;
if ((md5_last == NULL) || (strcmp(md5_last, md5_new) != 0)) {
FILE *f;
f = rnd_fopen(NULL, last_fn, "w");
fputs(md5_new, f);
fclose(f);
changed = 1;
}
if (md5_last != NULL)
free(md5_last);
free(md5_new);
return changed;
}
int fp_wget_search(char *out, int out_len, const char *name, int offline, const char *url, const char *cache, int (*fp_wget_search_)(char *out, int out_len, FILE *f, const char *fn))
{
FILE *f_idx;
int fctx;
fp_get_mode mode = offline ? FP_WGET_OFFLINE : 0;
if (fp_wget_open(url, cache, &f_idx, &fctx, mode) == 0) {
if (fp_wget_search_(out, out_len, f_idx, name) != 0) {
fp_wget_close(&f_idx, &fctx);
return -1;
}
}
else
return -1;
fp_wget_close(&f_idx, &fctx);
return 0;
}
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