mirror of
https://codeberg.org/anoncontributorxmr/monero.git
synced 2024-11-23 11:23:26 +01:00
580 lines
14 KiB
C
580 lines
14 KiB
C
/* $Id: miniwget.c,v 1.61 2014/02/05 17:27:48 nanard Exp $ */
|
|
/* Project : miniupnp
|
|
* Website : http://miniupnp.free.fr/
|
|
* Author : Thomas Bernard
|
|
* Copyright (c) 2005-2014 Thomas Bernard
|
|
* This software is subject to the conditions detailed in the
|
|
* LICENCE file provided in this distribution. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <ctype.h>
|
|
#ifdef _WIN32
|
|
#include <winsock2.h>
|
|
#include <ws2tcpip.h>
|
|
#include <io.h>
|
|
#define MAXHOSTNAMELEN 64
|
|
#define snprintf _snprintf
|
|
#define socklen_t int
|
|
#ifndef strncasecmp
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1400)
|
|
#define strncasecmp _memicmp
|
|
#else /* defined(_MSC_VER) && (_MSC_VER >= 1400) */
|
|
#define strncasecmp memicmp
|
|
#endif /* defined(_MSC_VER) && (_MSC_VER >= 1400) */
|
|
#endif /* #ifndef strncasecmp */
|
|
#else /* #ifdef _WIN32 */
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
#if defined(__amigaos__) && !defined(__amigaos4__)
|
|
#define socklen_t int
|
|
#else /* #if defined(__amigaos__) && !defined(__amigaos4__) */
|
|
#include <sys/select.h>
|
|
#endif /* #else defined(__amigaos__) && !defined(__amigaos4__) */
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <net/if.h>
|
|
#include <netdb.h>
|
|
#define closesocket close
|
|
#endif /* #else _WIN32 */
|
|
#ifdef __GNU__
|
|
#define MAXHOSTNAMELEN 64
|
|
#endif /* __GNU__ */
|
|
|
|
#ifndef MIN
|
|
#define MIN(x,y) (((x)<(y))?(x):(y))
|
|
#endif /* MIN */
|
|
|
|
|
|
#include "miniupnpcstrings.h"
|
|
#include "miniwget.h"
|
|
#include "connecthostport.h"
|
|
#include "receivedata.h"
|
|
|
|
#ifndef MAXHOSTNAMELEN
|
|
#define MAXHOSTNAMELEN 64
|
|
#endif
|
|
|
|
/*
|
|
* Read a HTTP response from a socket.
|
|
* Process Content-Length and Transfer-encoding headers.
|
|
* return a pointer to the content buffer, which length is saved
|
|
* to the length parameter.
|
|
*/
|
|
void *
|
|
getHTTPResponse(int s, int * size)
|
|
{
|
|
char buf[2048];
|
|
int n;
|
|
int endofheaders = 0;
|
|
int chunked = 0;
|
|
int content_length = -1;
|
|
unsigned int chunksize = 0;
|
|
unsigned int bytestocopy = 0;
|
|
/* buffers : */
|
|
char * header_buf;
|
|
unsigned int header_buf_len = 2048;
|
|
unsigned int header_buf_used = 0;
|
|
char * content_buf;
|
|
unsigned int content_buf_len = 2048;
|
|
unsigned int content_buf_used = 0;
|
|
char chunksize_buf[32];
|
|
unsigned int chunksize_buf_index;
|
|
|
|
header_buf = malloc(header_buf_len);
|
|
content_buf = malloc(content_buf_len);
|
|
chunksize_buf[0] = '\0';
|
|
chunksize_buf_index = 0;
|
|
|
|
while((n = receivedata(s, buf, 2048, 5000, NULL)) > 0)
|
|
{
|
|
if(endofheaders == 0)
|
|
{
|
|
int i;
|
|
int linestart=0;
|
|
int colon=0;
|
|
int valuestart=0;
|
|
if(header_buf_used + n > header_buf_len) {
|
|
header_buf = realloc(header_buf, header_buf_used + n);
|
|
header_buf_len = header_buf_used + n;
|
|
}
|
|
memcpy(header_buf + header_buf_used, buf, n);
|
|
header_buf_used += n;
|
|
/* search for CR LF CR LF (end of headers)
|
|
* recognize also LF LF */
|
|
i = 0;
|
|
while(i < ((int)header_buf_used-1) && (endofheaders == 0)) {
|
|
if(header_buf[i] == '\r') {
|
|
i++;
|
|
if(header_buf[i] == '\n') {
|
|
i++;
|
|
if(i < (int)header_buf_used && header_buf[i] == '\r') {
|
|
i++;
|
|
if(i < (int)header_buf_used && header_buf[i] == '\n') {
|
|
endofheaders = i+1;
|
|
}
|
|
}
|
|
}
|
|
} else if(header_buf[i] == '\n') {
|
|
i++;
|
|
if(header_buf[i] == '\n') {
|
|
endofheaders = i+1;
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
if(endofheaders == 0)
|
|
continue;
|
|
/* parse header lines */
|
|
for(i = 0; i < endofheaders - 1; i++) {
|
|
if(colon <= linestart && header_buf[i]==':')
|
|
{
|
|
colon = i;
|
|
while(i < (endofheaders-1)
|
|
&& (header_buf[i+1] == ' ' || header_buf[i+1] == '\t'))
|
|
i++;
|
|
valuestart = i + 1;
|
|
}
|
|
/* detecting end of line */
|
|
else if(header_buf[i]=='\r' || header_buf[i]=='\n')
|
|
{
|
|
if(colon > linestart && valuestart > colon)
|
|
{
|
|
#ifdef DEBUG
|
|
printf("header='%.*s', value='%.*s'\n",
|
|
colon-linestart, header_buf+linestart,
|
|
i-valuestart, header_buf+valuestart);
|
|
#endif
|
|
if(0==strncasecmp(header_buf+linestart, "content-length", colon-linestart))
|
|
{
|
|
content_length = atoi(header_buf+valuestart);
|
|
#ifdef DEBUG
|
|
printf("Content-Length: %d\n", content_length);
|
|
#endif
|
|
}
|
|
else if(0==strncasecmp(header_buf+linestart, "transfer-encoding", colon-linestart)
|
|
&& 0==strncasecmp(header_buf+valuestart, "chunked", 7))
|
|
{
|
|
#ifdef DEBUG
|
|
printf("chunked transfer-encoding!\n");
|
|
#endif
|
|
chunked = 1;
|
|
}
|
|
}
|
|
while((i < (int)header_buf_used) && (header_buf[i]=='\r' || header_buf[i] == '\n'))
|
|
i++;
|
|
linestart = i;
|
|
colon = linestart;
|
|
valuestart = 0;
|
|
}
|
|
}
|
|
/* copy the remaining of the received data back to buf */
|
|
n = header_buf_used - endofheaders;
|
|
memcpy(buf, header_buf + endofheaders, n);
|
|
/* if(headers) */
|
|
}
|
|
if(endofheaders)
|
|
{
|
|
/* content */
|
|
if(chunked)
|
|
{
|
|
int i = 0;
|
|
while(i < n)
|
|
{
|
|
if(chunksize == 0)
|
|
{
|
|
/* reading chunk size */
|
|
if(chunksize_buf_index == 0) {
|
|
/* skipping any leading CR LF */
|
|
if(i<n && buf[i] == '\r') i++;
|
|
if(i<n && buf[i] == '\n') i++;
|
|
}
|
|
while(i<n && isxdigit(buf[i])
|
|
&& chunksize_buf_index < (sizeof(chunksize_buf)-1))
|
|
{
|
|
chunksize_buf[chunksize_buf_index++] = buf[i];
|
|
chunksize_buf[chunksize_buf_index] = '\0';
|
|
i++;
|
|
}
|
|
while(i<n && buf[i] != '\r' && buf[i] != '\n')
|
|
i++; /* discarding chunk-extension */
|
|
if(i<n && buf[i] == '\r') i++;
|
|
if(i<n && buf[i] == '\n') {
|
|
unsigned int j;
|
|
for(j = 0; j < chunksize_buf_index; j++) {
|
|
if(chunksize_buf[j] >= '0'
|
|
&& chunksize_buf[j] <= '9')
|
|
chunksize = (chunksize << 4) + (chunksize_buf[j] - '0');
|
|
else
|
|
chunksize = (chunksize << 4) + ((chunksize_buf[j] | 32) - 'a' + 10);
|
|
}
|
|
chunksize_buf[0] = '\0';
|
|
chunksize_buf_index = 0;
|
|
i++;
|
|
} else {
|
|
/* not finished to get chunksize */
|
|
continue;
|
|
}
|
|
#ifdef DEBUG
|
|
printf("chunksize = %u (%x)\n", chunksize, chunksize);
|
|
#endif
|
|
if(chunksize == 0)
|
|
{
|
|
#ifdef DEBUG
|
|
printf("end of HTTP content - %d %d\n", i, n);
|
|
/*printf("'%.*s'\n", n-i, buf+i);*/
|
|
#endif
|
|
goto end_of_stream;
|
|
}
|
|
}
|
|
bytestocopy = ((int)chunksize < (n - i))?chunksize:(unsigned int)(n - i);
|
|
if((content_buf_used + bytestocopy) > content_buf_len)
|
|
{
|
|
if(content_length >= (int)(content_buf_used + bytestocopy)) {
|
|
content_buf_len = content_length;
|
|
} else {
|
|
content_buf_len = content_buf_used + bytestocopy;
|
|
}
|
|
content_buf = (char *)realloc((void *)content_buf,
|
|
content_buf_len);
|
|
}
|
|
memcpy(content_buf + content_buf_used, buf + i, bytestocopy);
|
|
content_buf_used += bytestocopy;
|
|
i += bytestocopy;
|
|
chunksize -= bytestocopy;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* not chunked */
|
|
if(content_length > 0
|
|
&& (int)(content_buf_used + n) > content_length) {
|
|
/* skipping additional bytes */
|
|
n = content_length - content_buf_used;
|
|
}
|
|
if(content_buf_used + n > content_buf_len)
|
|
{
|
|
if(content_length >= (int)(content_buf_used + n)) {
|
|
content_buf_len = content_length;
|
|
} else {
|
|
content_buf_len = content_buf_used + n;
|
|
}
|
|
content_buf = (char *)realloc((void *)content_buf,
|
|
content_buf_len);
|
|
}
|
|
memcpy(content_buf + content_buf_used, buf, n);
|
|
content_buf_used += n;
|
|
}
|
|
}
|
|
/* use the Content-Length header value if available */
|
|
if(content_length > 0 && (int)content_buf_used >= content_length)
|
|
{
|
|
#ifdef DEBUG
|
|
printf("End of HTTP content\n");
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
end_of_stream:
|
|
free(header_buf); header_buf = NULL;
|
|
*size = content_buf_used;
|
|
if(content_buf_used == 0)
|
|
{
|
|
free(content_buf);
|
|
content_buf = NULL;
|
|
}
|
|
return content_buf;
|
|
}
|
|
|
|
/* miniwget3() :
|
|
* do all the work.
|
|
* Return NULL if something failed. */
|
|
static void *
|
|
miniwget3(const char * host,
|
|
unsigned short port, const char * path,
|
|
int * size, char * addr_str, int addr_str_len,
|
|
const char * httpversion, unsigned int scope_id)
|
|
{
|
|
char buf[2048];
|
|
int s;
|
|
int n;
|
|
int len;
|
|
int sent;
|
|
void * content;
|
|
|
|
*size = 0;
|
|
s = connecthostport(host, port, scope_id);
|
|
if(s < 0)
|
|
return NULL;
|
|
|
|
/* get address for caller ! */
|
|
if(addr_str)
|
|
{
|
|
struct sockaddr_storage saddr;
|
|
socklen_t saddrlen;
|
|
|
|
saddrlen = sizeof(saddr);
|
|
if(getsockname(s, (struct sockaddr *)&saddr, &saddrlen) < 0)
|
|
{
|
|
perror("getsockname");
|
|
}
|
|
else
|
|
{
|
|
#if defined(__amigaos__) && !defined(__amigaos4__)
|
|
/* using INT WINAPI WSAAddressToStringA(LPSOCKADDR, DWORD, LPWSAPROTOCOL_INFOA, LPSTR, LPDWORD);
|
|
* But his function make a string with the port : nn.nn.nn.nn:port */
|
|
/* if(WSAAddressToStringA((SOCKADDR *)&saddr, sizeof(saddr),
|
|
NULL, addr_str, (DWORD *)&addr_str_len))
|
|
{
|
|
printf("WSAAddressToStringA() failed : %d\n", WSAGetLastError());
|
|
}*/
|
|
/* the following code is only compatible with ip v4 addresses */
|
|
strncpy(addr_str, inet_ntoa(((struct sockaddr_in *)&saddr)->sin_addr), addr_str_len);
|
|
#else
|
|
#if 0
|
|
if(saddr.sa_family == AF_INET6) {
|
|
inet_ntop(AF_INET6,
|
|
&(((struct sockaddr_in6 *)&saddr)->sin6_addr),
|
|
addr_str, addr_str_len);
|
|
} else {
|
|
inet_ntop(AF_INET,
|
|
&(((struct sockaddr_in *)&saddr)->sin_addr),
|
|
addr_str, addr_str_len);
|
|
}
|
|
#endif
|
|
/* getnameinfo return ip v6 address with the scope identifier
|
|
* such as : 2a01:e35:8b2b:7330::%4281128194 */
|
|
n = getnameinfo((const struct sockaddr *)&saddr, saddrlen,
|
|
addr_str, addr_str_len,
|
|
NULL, 0,
|
|
NI_NUMERICHOST | NI_NUMERICSERV);
|
|
if(n != 0) {
|
|
#ifdef _WIN32
|
|
fprintf(stderr, "getnameinfo() failed : %d\n", n);
|
|
#else
|
|
fprintf(stderr, "getnameinfo() failed : %s\n", gai_strerror(n));
|
|
#endif
|
|
}
|
|
#endif
|
|
}
|
|
#ifdef DEBUG
|
|
printf("address miniwget : %s\n", addr_str);
|
|
#endif
|
|
}
|
|
|
|
len = snprintf(buf, sizeof(buf),
|
|
"GET %s HTTP/%s\r\n"
|
|
"Host: %s:%d\r\n"
|
|
"Connection: Close\r\n"
|
|
"User-Agent: " OS_STRING ", UPnP/1.0, MiniUPnPc/" MINIUPNPC_VERSION_STRING "\r\n"
|
|
|
|
"\r\n",
|
|
path, httpversion, host, port);
|
|
sent = 0;
|
|
/* sending the HTTP request */
|
|
while(sent < len)
|
|
{
|
|
n = send(s, buf+sent, len-sent, 0);
|
|
if(n < 0)
|
|
{
|
|
perror("send");
|
|
closesocket(s);
|
|
return NULL;
|
|
}
|
|
else
|
|
{
|
|
sent += n;
|
|
}
|
|
}
|
|
content = getHTTPResponse(s, size);
|
|
closesocket(s);
|
|
return content;
|
|
}
|
|
|
|
/* miniwget2() :
|
|
* Call miniwget3(); retry with HTTP/1.1 if 1.0 fails. */
|
|
static void *
|
|
miniwget2(const char * host,
|
|
unsigned short port, const char * path,
|
|
int * size, char * addr_str, int addr_str_len,
|
|
unsigned int scope_id)
|
|
{
|
|
char * respbuffer;
|
|
|
|
#if 1
|
|
respbuffer = miniwget3(host, port, path, size,
|
|
addr_str, addr_str_len, "1.1", scope_id);
|
|
#else
|
|
respbuffer = miniwget3(host, port, path, size,
|
|
addr_str, addr_str_len, "1.0", scope_id);
|
|
if (*size == 0)
|
|
{
|
|
#ifdef DEBUG
|
|
printf("Retrying with HTTP/1.1\n");
|
|
#endif
|
|
free(respbuffer);
|
|
respbuffer = miniwget3(host, port, path, size,
|
|
addr_str, addr_str_len, "1.1", scope_id);
|
|
}
|
|
#endif
|
|
return respbuffer;
|
|
}
|
|
|
|
|
|
|
|
|
|
/* parseURL()
|
|
* arguments :
|
|
* url : source string not modified
|
|
* hostname : hostname destination string (size of MAXHOSTNAMELEN+1)
|
|
* port : port (destination)
|
|
* path : pointer to the path part of the URL
|
|
*
|
|
* Return values :
|
|
* 0 - Failure
|
|
* 1 - Success */
|
|
int
|
|
parseURL(const char * url,
|
|
char * hostname, unsigned short * port,
|
|
char * * path, unsigned int * scope_id)
|
|
{
|
|
char * p1, *p2, *p3;
|
|
if(!url)
|
|
return 0;
|
|
p1 = strstr(url, "://");
|
|
if(!p1)
|
|
return 0;
|
|
p1 += 3;
|
|
if( (url[0]!='h') || (url[1]!='t')
|
|
||(url[2]!='t') || (url[3]!='p'))
|
|
return 0;
|
|
memset(hostname, 0, MAXHOSTNAMELEN + 1);
|
|
if(*p1 == '[')
|
|
{
|
|
/* IP v6 : http://[2a00:1450:8002::6a]/path/abc */
|
|
char * scope;
|
|
scope = strchr(p1, '%');
|
|
p2 = strchr(p1, ']');
|
|
if(p2 && scope && scope < p2 && scope_id) {
|
|
/* parse scope */
|
|
#ifdef IF_NAMESIZE
|
|
char tmp[IF_NAMESIZE];
|
|
int l;
|
|
scope++;
|
|
/* "%25" is just '%' in URL encoding */
|
|
if(scope[0] == '2' && scope[1] == '5')
|
|
scope += 2; /* skip "25" */
|
|
l = p2 - scope;
|
|
if(l >= IF_NAMESIZE)
|
|
l = IF_NAMESIZE - 1;
|
|
memcpy(tmp, scope, l);
|
|
tmp[l] = '\0';
|
|
*scope_id = if_nametoindex(tmp);
|
|
if(*scope_id == 0) {
|
|
*scope_id = (unsigned int)strtoul(tmp, NULL, 10);
|
|
}
|
|
#else
|
|
/* under windows, scope is numerical */
|
|
char tmp[8];
|
|
int l;
|
|
scope++;
|
|
/* "%25" is just '%' in URL encoding */
|
|
if(scope[0] == '2' && scope[1] == '5')
|
|
scope += 2; /* skip "25" */
|
|
l = p2 - scope;
|
|
if(l >= sizeof(tmp))
|
|
l = sizeof(tmp) - 1;
|
|
memcpy(tmp, scope, l);
|
|
tmp[l] = '\0';
|
|
*scope_id = (unsigned int)strtoul(tmp, NULL, 10);
|
|
#endif
|
|
}
|
|
p3 = strchr(p1, '/');
|
|
if(p2 && p3)
|
|
{
|
|
p2++;
|
|
strncpy(hostname, p1, MIN(MAXHOSTNAMELEN, (int)(p2-p1)));
|
|
if(*p2 == ':')
|
|
{
|
|
*port = 0;
|
|
p2++;
|
|
while( (*p2 >= '0') && (*p2 <= '9'))
|
|
{
|
|
*port *= 10;
|
|
*port += (unsigned short)(*p2 - '0');
|
|
p2++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*port = 80;
|
|
}
|
|
*path = p3;
|
|
return 1;
|
|
}
|
|
}
|
|
p2 = strchr(p1, ':');
|
|
p3 = strchr(p1, '/');
|
|
if(!p3)
|
|
return 0;
|
|
if(!p2 || (p2>p3))
|
|
{
|
|
strncpy(hostname, p1, MIN(MAXHOSTNAMELEN, (int)(p3-p1)));
|
|
*port = 80;
|
|
}
|
|
else
|
|
{
|
|
strncpy(hostname, p1, MIN(MAXHOSTNAMELEN, (int)(p2-p1)));
|
|
*port = 0;
|
|
p2++;
|
|
while( (*p2 >= '0') && (*p2 <= '9'))
|
|
{
|
|
*port *= 10;
|
|
*port += (unsigned short)(*p2 - '0');
|
|
p2++;
|
|
}
|
|
}
|
|
*path = p3;
|
|
return 1;
|
|
}
|
|
|
|
void *
|
|
miniwget(const char * url, int * size, unsigned int scope_id)
|
|
{
|
|
unsigned short port;
|
|
char * path;
|
|
/* protocol://host:port/chemin */
|
|
char hostname[MAXHOSTNAMELEN+1];
|
|
*size = 0;
|
|
if(!parseURL(url, hostname, &port, &path, &scope_id))
|
|
return NULL;
|
|
#ifdef DEBUG
|
|
printf("parsed url : hostname='%s' port=%hu path='%s' scope_id=%u\n",
|
|
hostname, port, path, scope_id);
|
|
#endif
|
|
return miniwget2(hostname, port, path, size, 0, 0, scope_id);
|
|
}
|
|
|
|
void *
|
|
miniwget_getaddr(const char * url, int * size,
|
|
char * addr, int addrlen, unsigned int scope_id)
|
|
{
|
|
unsigned short port;
|
|
char * path;
|
|
/* protocol://host:port/path */
|
|
char hostname[MAXHOSTNAMELEN+1];
|
|
*size = 0;
|
|
if(addr)
|
|
addr[0] = '\0';
|
|
if(!parseURL(url, hostname, &port, &path, &scope_id))
|
|
return NULL;
|
|
#ifdef DEBUG
|
|
printf("parsed url : hostname='%s' port=%hu path='%s' scope_id=%u\n",
|
|
hostname, port, path, scope_id);
|
|
#endif
|
|
return miniwget2(hostname, port, path, size, addr, addrlen, scope_id);
|
|
}
|
|
|