mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 08:12:17 +00:00
944be9d24b
Many instances of "http" were not changed to "mp_http", which made many aspects of the mp_http protocol handler broken.
507 lines
14 KiB
C
507 lines
14 KiB
C
/*
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* URL Helper
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*
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* Copyright (C) 2001 Bertrand Baudet <bertrand_baudet@yahoo.com>
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*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <stdarg.h>
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#include <inttypes.h>
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#include "url.h"
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#include "core/mp_msg.h"
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#ifndef SIZE_MAX
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#define SIZE_MAX ((size_t)-1)
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#endif
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static char *mp_asprintf(const char *fmt, ...)
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{
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char *p = NULL;
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va_list va, va_bak;
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int len;
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va_start(va, fmt);
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va_copy(va_bak, va);
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len = vsnprintf(NULL, 0, fmt, va);
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if (len < 0)
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goto end;
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p = malloc(len + 1);
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if (!p)
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goto end;
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len = vsnprintf(p, len + 1, fmt, va_bak);
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if (len < 0)
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free(p), p = NULL;
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end:
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va_end(va);
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return p;
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}
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static int is_proxy(const URL_t *url) {
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return !strcasecmp(url->protocol, "mp_http_proxy") && url->file && strstr(url->file, "://");
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}
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int url_is_protocol(const URL_t *url, const char *proto) {
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int proxy = is_proxy(url);
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if (proxy) {
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URL_t *tmp = url_new(url->file + 1);
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int res = !strcasecmp(tmp->protocol, proto);
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url_free(tmp);
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return res;
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}
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return !strcasecmp(url->protocol, proto);
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}
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void url_set_protocol(URL_t *url, const char *proto) {
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int proxy = is_proxy(url);
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if (proxy) {
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char *dst = url->file + 1;
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int oldlen = strstr(dst, "://") - dst;
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int newlen = strlen(proto);
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if (newlen != oldlen) {
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mp_msg(MSGT_NETWORK, MSGL_ERR, "Setting protocol not implemented!\n");
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return;
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}
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memcpy(dst, proto, newlen);
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return;
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}
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free(url->protocol);
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url->protocol = strdup(proto);
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}
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URL_t *url_redirect(URL_t **url, const char *redir) {
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URL_t *u = *url;
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int proxy = is_proxy(u);
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const char *oldurl = proxy ? u->file + 1 : u->url;
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const char *newurl = redir;
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char *buffer = NULL;
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URL_t *res;
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if (!strchr(redir, '/') || *redir == '/') {
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char *tmp;
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newurl = buffer = malloc(strlen(oldurl) + strlen(redir) + 1);
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strcpy(buffer, oldurl);
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if (*redir == '/') {
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redir++;
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tmp = strstr(buffer, "://");
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if (tmp) tmp = strchr(tmp + 3, '/');
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} else
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tmp = strrchr(buffer, '/');
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if (tmp) tmp[1] = 0;
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strcat(buffer, redir);
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}
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if (proxy) {
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char *tmp = get_http_proxy_url(u, newurl);
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free(buffer);
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newurl = buffer = tmp;
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}
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res = url_new(newurl);
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free(buffer);
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url_free(u);
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*url = res;
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return res;
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}
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static char *get_noauth_url(const URL_t *url)
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{
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if (url->port)
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return mp_asprintf("%s://%s:%d%s",
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url->protocol, url->hostname, url->port, url->file);
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else
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return mp_asprintf("%s://%s%s",
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url->protocol, url->hostname, url->file);
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}
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char *get_http_proxy_url(const URL_t *proxy, const char *host_url)
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{
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if (proxy->username)
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return mp_asprintf("mp_http_proxy://%s:%s@%s:%d/%s",
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proxy->username,
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proxy->password ? proxy->password : "",
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proxy->hostname, proxy->port, host_url);
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else
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return mp_asprintf("mp_http_proxy://%s:%d/%s",
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proxy->hostname, proxy->port, host_url);
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}
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URL_t*
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url_new(const char* url) {
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int pos1, pos2,v6addr = 0;
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URL_t* Curl = NULL;
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char *escfilename=NULL;
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char *ptr1=NULL, *ptr2=NULL, *ptr3=NULL, *ptr4=NULL;
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int jumpSize = 3;
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if( url==NULL ) return NULL;
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if (strlen(url) > (SIZE_MAX / 3 - 1)) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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escfilename=malloc(strlen(url)*3+1);
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if (!escfilename ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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// Create the URL container
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Curl = calloc(1, sizeof(*Curl));
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if( Curl==NULL ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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url_escape_string(escfilename,url);
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// Copy the url in the URL container
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Curl->url = strdup(escfilename);
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if( Curl->url==NULL ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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mp_msg(MSGT_OPEN,MSGL_V,"Filename for url is now %s\n",escfilename);
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// extract the protocol
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ptr1 = strstr(escfilename, "://");
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if( ptr1==NULL ) {
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// Check for a special case: "sip:" (without "//"):
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if (strstr(escfilename, "sip:") == escfilename) {
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ptr1 = (char *)&url[3]; // points to ':'
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jumpSize = 1;
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} else {
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mp_msg(MSGT_NETWORK,MSGL_V,"Not an URL!\n");
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goto err_out;
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}
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}
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pos1 = ptr1-escfilename;
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Curl->protocol = malloc(pos1+1);
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if( Curl->protocol==NULL ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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strncpy(Curl->protocol, escfilename, pos1);
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Curl->protocol[pos1] = '\0';
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// jump the "://"
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ptr1 += jumpSize;
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pos1 += jumpSize;
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// check if a username:password is given
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ptr2 = strstr(ptr1, "@");
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ptr3 = strstr(ptr1, "/");
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if( ptr3!=NULL && ptr3<ptr2 ) {
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// it isn't really a username but rather a part of the path
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ptr2 = NULL;
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}
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if( ptr2!=NULL ) {
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// We got something, at least a username...
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int len = ptr2-ptr1;
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Curl->username = malloc(len+1);
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if( Curl->username==NULL ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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strncpy(Curl->username, ptr1, len);
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Curl->username[len] = '\0';
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ptr3 = strstr(ptr1, ":");
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if( ptr3!=NULL && ptr3<ptr2 ) {
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// We also have a password
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int len2 = ptr2-ptr3-1;
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Curl->username[ptr3-ptr1]='\0';
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Curl->password = malloc(len2+1);
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if( Curl->password==NULL ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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strncpy( Curl->password, ptr3+1, len2);
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Curl->password[len2]='\0';
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url_unescape_string(Curl->password, Curl->password);
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}
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url_unescape_string(Curl->username, Curl->username);
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ptr1 = ptr2+1;
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pos1 = ptr1-escfilename;
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}
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// before looking for a port number check if we have an IPv6 type numeric address
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// in IPv6 URL the numeric address should be inside square braces.
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ptr2 = strstr(ptr1, "[");
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ptr3 = strstr(ptr1, "]");
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ptr4 = strstr(ptr1, "/");
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if( ptr2!=NULL && ptr3!=NULL && ptr2 < ptr3 && (!ptr4 || ptr4 > ptr3)) {
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// we have an IPv6 numeric address
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ptr1++;
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pos1++;
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ptr2 = ptr3;
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v6addr = 1;
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} else {
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ptr2 = ptr1;
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}
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// look if the port is given
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ptr2 = strstr(ptr2, ":");
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// If the : is after the first / it isn't the port
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ptr3 = strstr(ptr1, "/");
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if(ptr3 && ptr3 - ptr2 < 0) ptr2 = NULL;
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if( ptr2==NULL ) {
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// No port is given
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// Look if a path is given
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if( ptr3==NULL ) {
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// No path/filename
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// So we have an URL like http://www.hostname.com
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pos2 = strlen(escfilename);
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} else {
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// We have an URL like http://www.hostname.com/file.txt
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pos2 = ptr3-escfilename;
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}
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} else {
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// We have an URL beginning like http://www.hostname.com:1212
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// Get the port number
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Curl->port = atoi(ptr2+1);
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pos2 = ptr2-escfilename;
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}
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if( v6addr ) pos2--;
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// copy the hostname in the URL container
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Curl->hostname = malloc(pos2-pos1+1);
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if( Curl->hostname==NULL ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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strncpy(Curl->hostname, ptr1, pos2-pos1);
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Curl->hostname[pos2-pos1] = '\0';
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// Look if a path is given
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ptr2 = strstr(ptr1, "/");
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if( ptr2!=NULL ) {
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// A path/filename is given
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// check if it's not a trailing '/'
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if( strlen(ptr2)>1 ) {
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// copy the path/filename in the URL container
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Curl->file = strdup(ptr2);
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if( Curl->file==NULL ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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}
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}
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// Check if a filename was given or set, else set it with '/'
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if( Curl->file==NULL ) {
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Curl->file = malloc(2);
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if( Curl->file==NULL ) {
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mp_tmsg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed.\n");
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goto err_out;
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}
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strcpy(Curl->file, "/");
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}
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Curl->noauth_url = get_noauth_url(Curl);
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if (!Curl->noauth_url) {
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mp_msg(MSGT_NETWORK, MSGL_FATAL, "Memory allocation failed.\n");
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goto err_out;
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}
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free(escfilename);
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return Curl;
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err_out:
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free(escfilename);
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if (Curl) url_free(Curl);
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return NULL;
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}
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void
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url_free(URL_t* url) {
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if(!url) return;
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free(url->url);
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free(url->protocol);
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free(url->hostname);
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free(url->file);
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free(url->username);
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free(url->password);
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free(url);
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}
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/* Replace escape sequences in an URL (or a part of an URL) */
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/* works like strcpy(), but without return argument,
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except that outbuf == inbuf is allowed */
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void
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url_unescape_string(char *outbuf, const char *inbuf)
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{
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unsigned char c,c1,c2;
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int i,len=strlen(inbuf);
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for (i=0;i<len;i++){
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c = inbuf[i];
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if (c == '%' && i<len-2) { //must have 2 more chars
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c1 = toupper(inbuf[i+1]); // we need uppercase characters
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c2 = toupper(inbuf[i+2]);
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if ( ((c1>='0' && c1<='9') || (c1>='A' && c1<='F')) &&
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((c2>='0' && c2<='9') || (c2>='A' && c2<='F')) ) {
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if (c1>='0' && c1<='9') c1-='0';
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else c1-='A'-10;
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if (c2>='0' && c2<='9') c2-='0';
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else c2-='A'-10;
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c = (c1<<4) + c2;
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i=i+2; //only skip next 2 chars if valid esc
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}
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}
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*outbuf++ = c;
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}
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*outbuf++='\0'; //add nullterm to string
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}
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static void
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url_escape_string_part(char *outbuf, const char *inbuf) {
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unsigned char c,c1,c2;
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int i,len=strlen(inbuf);
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for (i=0;i<len;i++) {
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c = inbuf[i];
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if ((c=='%') && i<len-2 ) { //need 2 more characters
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c1=toupper(inbuf[i+1]); c2=toupper(inbuf[i+2]); // need uppercase chars
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} else {
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c1=129; c2=129; //not escape chars
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}
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if( (c >= 'A' && c <= 'Z') ||
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(c >= 'a' && c <= 'z') ||
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(c >= '0' && c <= '9')) {
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*outbuf++ = c;
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} else if ( c=='%' && ((c1 >= '0' && c1 <= '9') || (c1 >= 'A' && c1 <= 'F')) &&
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((c2 >= '0' && c2 <= '9') || (c2 >= 'A' && c2 <= 'F'))) {
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// check if part of an escape sequence
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*outbuf++=c; // already
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// dont escape again
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mp_tmsg(MSGT_NETWORK,MSGL_ERR,"String appears to be already escaped in url_escape %c%c1%c2\n",c,c1,c2);
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// error as this should not happen against RFC 2396
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// to escape a string twice
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} else {
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/* all others will be escaped */
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c1 = ((c & 0xf0) >> 4);
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c2 = (c & 0x0f);
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if (c1 < 10) c1+='0';
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else c1+='A'-10;
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if (c2 < 10) c2+='0';
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else c2+='A'-10;
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*outbuf++ = '%';
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*outbuf++ = c1;
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*outbuf++ = c2;
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}
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}
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*outbuf++='\0';
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}
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/* Replace specific characters in the URL string by an escape sequence */
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/* works like strcpy(), but without return argument */
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void
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url_escape_string(char *outbuf, const char *inbuf) {
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unsigned char c;
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int i = 0,j,len = strlen(inbuf);
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char* tmp,*unesc = NULL, *in;
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// Look if we have an ip6 address, if so skip it there is
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// no need to escape anything in there.
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tmp = strstr(inbuf,"://[");
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if(tmp) {
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tmp = strchr(tmp+4,']');
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if(tmp && (tmp[1] == '/' || tmp[1] == ':' ||
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tmp[1] == '\0')) {
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i = tmp+1-inbuf;
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strncpy(outbuf,inbuf,i);
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outbuf += i;
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tmp = NULL;
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}
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}
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tmp = NULL;
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while(i < len) {
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// look for the next char that must be kept
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for (j=i;j<len;j++) {
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c = inbuf[j];
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if(c=='-' || c=='_' || c=='.' || c=='!' || c=='~' || /* mark characters */
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c=='*' || c=='\'' || c=='(' || c==')' || /* do not touch escape character */
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c==';' || c=='/' || c=='?' || c==':' || c=='@' || /* reserved characters */
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c=='&' || c=='=' || c=='+' || c=='$' || c==',') /* see RFC 2396 */
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break;
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}
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// we are on a reserved char, write it out
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if(j == i) {
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*outbuf++ = c;
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i++;
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continue;
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}
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// we found one, take that part of the string
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if(j < len) {
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if(!tmp) tmp = malloc(len+1);
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strncpy(tmp,inbuf+i,j-i);
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tmp[j-i] = '\0';
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in = tmp;
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} else // take the rest of the string
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in = (char*)inbuf+i;
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if(!unesc) unesc = malloc(len+1);
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// unescape first to avoid escaping escape
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url_unescape_string(unesc,in);
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// then escape, including mark and other reserved chars
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// that can come from escape sequences
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url_escape_string_part(outbuf,unesc);
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outbuf += strlen(outbuf);
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i += strlen(in);
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}
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*outbuf = '\0';
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free(tmp);
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free(unesc);
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}
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#ifdef URL_DEBUG
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void
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url_debug(const URL_t *url) {
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if( url==NULL ) {
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printf("URL pointer NULL\n");
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return;
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}
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if( url->url!=NULL ) {
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printf("url=%s\n", url->url );
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}
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if( url->protocol!=NULL ) {
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printf("protocol=%s\n", url->protocol );
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}
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if( url->hostname!=NULL ) {
|
|
printf("hostname=%s\n", url->hostname );
|
|
}
|
|
printf("port=%d\n", url->port );
|
|
if( url->file!=NULL ) {
|
|
printf("file=%s\n", url->file );
|
|
}
|
|
if( url->username!=NULL ) {
|
|
printf("username=%s\n", url->username );
|
|
}
|
|
if( url->password!=NULL ) {
|
|
printf("password=%s\n", url->password );
|
|
}
|
|
}
|
|
#endif /* URL_DEBUG */
|