/*
This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
+ (C) 2002-2013 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
* @brief functionality shared by http client and server transport service plugin
* @author Matthias Wachs
*/
-
#include "platform.h"
-#include "gnunet_common.h"
+#include "gnunet_util_lib.h"
#include "gnunet_transport_plugin.h"
#include "plugin_transport_http_common.h"
+
struct SplittedHTTPAddress
{
- char *protocol;
- char *host;
- char *path;
- int port;
+ char *protocol;
+ char *host;
+ char *path;
+ int port;
};
+
+static void
+http_clean_splitted (struct SplittedHTTPAddress *spa)
+{
+ if (NULL != spa)
+ {
+ GNUNET_free_non_null (spa->protocol);
+ GNUNET_free_non_null (spa->host);
+ GNUNET_free_non_null (spa->path);
+ GNUNET_free_non_null (spa);
+ }
+}
+
+
struct SplittedHTTPAddress *
http_split_address (const char * addr)
{
- struct SplittedHTTPAddress *sp;
- char *src = GNUNET_strdup (addr);
- char *protocol_start = NULL;
- char *host_start = NULL;
- char *v6_end = NULL;
- char *port_start = NULL;
- char *path_start = NULL;
-
- protocol_start = src;
- sp = GNUNET_malloc (sizeof (struct SplittedHTTPAddress));
-
- /* Address string consists of protocol://host[:port]path*/
-
- host_start = strstr (src, "://");
- if (NULL == host_start)
- {
- GNUNET_free (src);
- GNUNET_free (sp);
- return NULL;
- }
-
- host_start[0] = '\0';
- sp->protocol = GNUNET_strdup (protocol_start);
-
- host_start += strlen ("://");
- if (strlen (host_start) == 0)
- {
- GNUNET_free (src);
- GNUNET_free (sp->protocol);
- GNUNET_free (sp);
- return NULL;
- }
-
- /* Find path start */
- path_start = strchr (host_start, '/');
- if (NULL != path_start)
- {
- sp->path = GNUNET_strdup (path_start);
- path_start[0] = '\0';
- }
- else
- sp->path = GNUNET_strdup ("");
-
- if (strlen(host_start) < 1)
- {
- GNUNET_free (src);
- GNUNET_free (sp->protocol);
- GNUNET_free (sp->path);
- GNUNET_free (sp);
- return NULL;
- }
-
- if (NULL != (port_start = strrchr (host_start, ':')))
- {
- /* *We COULD have a port, but also an IPv6 address! */
- if (NULL != (v6_end = strchr(host_start, ']')))
- {
- if (v6_end < port_start)
- {
- /* IPv6 address + port */
- port_start[0] = '\0';
- port_start ++;
- sp->port = atoi (port_start);
- }
- else
- {
- /* IPv6 address + no port */
- if (0 == strcmp(sp->protocol, "https"))
- sp->port = HTTPS_DEFAULT_PORT;
- else if (0 == strcmp(sp->protocol, "http"))
- sp->port = HTTP_DEFAULT_PORT;
- }
- }
- else
- {
- /* No IPv6 address */
- port_start[0] = '\0';
- port_start ++;
- sp->port = atoi (port_start);
- }
- }
- else
- {
- /* No ':' as port separator, default port for protocol */
- if (0 == strcmp(sp->protocol, "https"))
- sp->port = HTTPS_DEFAULT_PORT;
- else if (0 == strcmp(sp->protocol, "http"))
- sp->port = HTTP_DEFAULT_PORT;
- else
- {
- GNUNET_break (0);
- GNUNET_free (src);
- GNUNET_free (sp->protocol);
- GNUNET_free (sp->path);
- GNUNET_free (sp);
- return NULL;
- }
- }
- if (strlen (host_start) > 0)
- sp->host = GNUNET_strdup (host_start);
- else
- {
- GNUNET_break (0);
- GNUNET_free (src);
- GNUNET_free (sp->protocol);
- GNUNET_free (sp->path);
- GNUNET_free (sp);
- return NULL;
- }
- //fprintf (stderr, "addr: `%s' protocol: `%s', host `%s' port `%u' path `%s'\n", addr, sp->protocol, sp->host, sp->port, sp->path);
- return sp;
+ struct SplittedHTTPAddress *sp;
+ char *src = GNUNET_strdup (addr);
+ char *protocol_start = NULL;
+ char *host_start = NULL;
+ char *v6_end = NULL;
+ char *port_start = NULL;
+ char *path_start = NULL;
+ protocol_start = src;
+
+ sp = GNUNET_new (struct SplittedHTTPAddress);
+ /* Address string consists of protocol://host[:port]path*/
+
+ host_start = strstr (src, "://");
+ if (NULL == host_start)
+ {
+ GNUNET_free (src);
+ GNUNET_free (sp);
+ return NULL;
+ }
+ host_start[0] = '\0';
+ sp->protocol = GNUNET_strdup (protocol_start);
+
+ host_start += strlen ("://");
+ if (strlen (host_start) == 0)
+ {
+ GNUNET_free (src);
+ GNUNET_free (sp->protocol);
+ GNUNET_free (sp);
+ return NULL;
+ }
+
+ /* Find path start */
+ path_start = strchr (host_start, '/');
+ if (NULL != path_start)
+ {
+ sp->path = GNUNET_strdup (path_start);
+ path_start[0] = '\0';
+ }
+ else
+ sp->path = GNUNET_strdup ("");
+
+ if (strlen(host_start) < 1)
+ {
+ GNUNET_free (src);
+ GNUNET_free (sp->protocol);
+ GNUNET_free (sp->path);
+ GNUNET_free (sp);
+ return NULL;
+ }
+
+ if (NULL != (port_start = strrchr (host_start, ':')))
+ {
+ /* *We COULD have a port, but also an IPv6 address! */
+ if (NULL != (v6_end = strchr(host_start, ']')))
+ {
+ if (v6_end < port_start)
+ {
+ /* IPv6 address + port */
+ port_start[0] = '\0';
+ port_start ++;
+ sp->port = atoi (port_start);
+ if ((0 == sp->port) || (65535 < sp->port))
+ {
+ GNUNET_free (src);
+ GNUNET_free (sp->protocol);
+ GNUNET_free (sp->path);
+ GNUNET_free (sp);
+ return NULL;
+ }
+ }
+ else
+ {
+ /* IPv6 address + no port */
+ if (0 == strcmp(sp->protocol, "https"))
+ sp->port = HTTPS_DEFAULT_PORT;
+ else if (0 == strcmp(sp->protocol, "http"))
+ sp->port = HTTP_DEFAULT_PORT;
+ }
+ }
+ else
+ {
+ /* No IPv6 address */
+ port_start[0] = '\0';
+ port_start ++;
+ sp->port = atoi (port_start);
+ if ((0 == sp->port) || (65535 < sp->port))
+ {
+ GNUNET_free (src);
+ GNUNET_free (sp->protocol);
+ GNUNET_free (sp->path);
+ GNUNET_free (sp);
+ return NULL;
+ }
+ }
+ }
+ else
+ {
+ /* No ':' as port separator, default port for protocol */
+ if (0 == strcmp(sp->protocol, "https"))
+ sp->port = HTTPS_DEFAULT_PORT;
+ else if (0 == strcmp(sp->protocol, "http"))
+ sp->port = HTTP_DEFAULT_PORT;
+ else
+ {
+ GNUNET_break (0);
+ GNUNET_free (src);
+ GNUNET_free (sp->protocol);
+ GNUNET_free (sp->path);
+ GNUNET_free (sp);
+ return NULL;
+ }
+ }
+ if (strlen (host_start) > 0)
+ sp->host = GNUNET_strdup (host_start);
+ else
+ {
+ GNUNET_break (0);
+ GNUNET_free (src);
+ GNUNET_free (sp->protocol);
+ GNUNET_free (sp->path);
+ GNUNET_free (sp);
+ return NULL;
+ }
+ GNUNET_free (src);
+ return sp;
}
+
/**
* Convert the transports address to a nice, human-readable
* format.
* @param type name of the transport that generated the address
* @param addr one of the addresses of the host, NULL for the last address
* the specific address format depends on the transport
- * @param addrlen length of the address
+ * @param addrlen length of the @a addr
* @param numeric should (IP) addresses be displayed in numeric form?
* @param timeout after how long should we give up?
* @param asc function to call on each string
- * @param asc_cls closure for asc
+ * @param asc_cls closure for @a asc
*/
void
-http_common_plugin_address_pretty_printer (void *cls, const char *type,
- const void *addr, size_t addrlen,
- int numeric,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_TRANSPORT_AddressStringCallback
- asc, void *asc_cls)
+http_common_plugin_address_pretty_printer (void *cls,
+ const char *type,
+ const void *addr,
+ size_t addrlen,
+ int numeric,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TRANSPORT_AddressStringCallback asc,
+ void *asc_cls)
{
- const char *saddr = (const char *) addr;
+ const struct HttpAddress *address = addr;
- if ( (NULL == saddr) ||
- (0 >= addrlen) ||
- ('\0' != saddr[addrlen-1]) )
+ if (NULL ==
+ http_common_plugin_address_to_string (NULL, type,
+ address, addrlen))
{
- asc (asc_cls, NULL);
- return;
+ asc (asc_cls, NULL);
+ return;
}
- asc (asc_cls, saddr);
+ asc (asc_cls, http_common_plugin_address_to_string (NULL,
+ type,
+ address, addrlen));
asc (asc_cls, NULL);
}
+const char *
+http_common_plugin_address_to_url (void *cls,
+ const void *addr,
+ size_t addrlen)
+{
+ static char rbuf[1024];
+ const struct HttpAddress *address = addr;
+ const char * addr_str;
+
+ if (NULL == addr)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ if (0 >= addrlen)
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ if (addrlen != http_common_address_get_size (address))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ addr_str = (char *) &address[1];
+
+ if (addr_str[ntohl(address->urlen) -1] != '\0')
+ return NULL;
+
+ memcpy (rbuf, &address[1], ntohl(address->urlen));
+ return rbuf;
+}
+
+
/**
* Function called for a quick conversion of the binary address to
* a numeric address. Note that the caller must not free the
* to override the address again.
*
* @param cls closure
+ * @param plugin the plugin
* @param addr binary address
* @param addrlen length of the address
* @return string representing the same address
*/
const char *
-http_common_plugin_address_to_string (void *cls, const void *addr, size_t addrlen)
+http_common_plugin_address_to_string (void *cls,
+ const char *plugin,
+ const void *addr,
+ size_t addrlen)
{
- const char *saddr = (const char *) addr;
- if (NULL == saddr)
+ static char rbuf[1024];
+ const struct HttpAddress *address = addr;
+ const char * addr_str;
+ char *res;
+
+ GNUNET_assert (NULL != plugin);
+
+ if (NULL == addr)
return NULL;
- if (0 >= addrlen)
- return NULL;
- if (saddr[addrlen-1] != '\0')
+ if (0 == addrlen)
+ return TRANSPORT_SESSION_INBOUND_STRING;
+ if (addrlen != http_common_address_get_size (address))
+ return NULL;
+ addr_str = (char *) &address[1];
+
+ if (addr_str[ntohl(address->urlen) -1] != '\0')
return NULL;
- return saddr;
+ GNUNET_asprintf (&res, "%s.%u.%s", plugin, ntohl(address->options), &address[1]);
+ if (strlen(res) + 1 < 500)
+ {
+ memcpy (rbuf, res, strlen(res) + 1);
+ GNUNET_free (res);
+ return rbuf;
+ }
+ GNUNET_break (0);
+ GNUNET_free (res);
+ return NULL;
}
+
/**
* Function called to convert a string address to
* a binary address.
*
* @param cls closure ('struct Plugin*')
* @param addr string address
- * @param addrlen length of the address
+ * @param addrlen length of the @a addr
* @param buf location to store the buffer
- * If the function returns GNUNET_SYSERR, its contents are undefined.
+ * If the function returns #GNUNET_SYSERR, its contents are undefined.
* @param added length of created address
- * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
*/
int
http_common_plugin_string_to_address (void *cls,
- const char *addr,
- uint16_t addrlen,
- void **buf,
- size_t *added)
+ const char *addr,
+ uint16_t addrlen,
+ void **buf,
+ size_t *added)
{
- if (NULL == addr)
- return GNUNET_SYSERR;
- if (0 >= addrlen)
+ struct HttpAddress *a;
+ char *address;
+ char *plugin;
+ char *optionstr;
+ size_t urlen;
+ uint32_t options;
+
+ /* Format protocol.options.address:port */
+ address = NULL;
+ plugin = NULL;
+ optionstr = NULL;
+ if ((NULL == addr) || (addrlen == 0))
+ {
+ GNUNET_break (0);
return GNUNET_SYSERR;
- if (addr[addrlen-1] != '\0')
+ }
+ if ('\0' != addr[addrlen - 1])
+ {
+ GNUNET_break (0);
return GNUNET_SYSERR;
-
- (*buf) = strdup (addr);
- (*added) = strlen (addr) + 1;
+ }
+ if (strlen (addr) != addrlen - 1)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ plugin = GNUNET_strdup (addr);
+ optionstr = strchr (plugin, '.');
+ if (NULL == optionstr)
+ {
+ GNUNET_break (0);
+ GNUNET_free (plugin);
+ return GNUNET_SYSERR;
+ }
+ optionstr[0] = '\0';
+ optionstr ++;
+ options = atol (optionstr); /* 0 on conversion error, that's ok */
+ address = strchr (optionstr, '.');
+ if (NULL == address)
+ {
+ GNUNET_break (0);
+ GNUNET_free (plugin);
+ return GNUNET_SYSERR;
+ }
+ address[0] = '\0';
+ address ++;
+ urlen = strlen (address) + 1;
+
+ a = GNUNET_malloc (sizeof (struct HttpAddress) + urlen);
+ a->options = htonl(options);
+ a->urlen = htonl(urlen);
+ memcpy (&a[1], address, urlen);
+
+ (*buf) = a;
+ (*added) = sizeof (struct HttpAddress) + urlen;
+ GNUNET_free (plugin);
return GNUNET_OK;
}
+
/**
* Create a HTTP address from a socketaddr
*
* @param protocol protocol
* @param addr sockaddr * address
* @param addrlen length of the address
- * @return the string
+ * @return the HttpAddress
*/
-char *
-http_common_address_from_socket (const char *protocol, const struct sockaddr *addr, socklen_t addrlen)
+struct HttpAddress *
+http_common_address_from_socket (const char *protocol,
+ const struct sockaddr *addr,
+ socklen_t addrlen)
{
+ struct HttpAddress *address = NULL;
char *res;
- GNUNET_asprintf(&res, "%s://%s", protocol, GNUNET_a2s (addr, addrlen));
- return res;
+ size_t len;
+
+ GNUNET_asprintf(&res,
+ "%s://%s",
+ protocol,
+ GNUNET_a2s (addr, addrlen));
+ len = strlen (res)+1;
+ address = GNUNET_malloc (sizeof (struct HttpAddress) + len);
+ address->options = htonl (HTTP_OPTIONS_NONE);
+ address->urlen = htonl (len);
+ memcpy (&address[1], res, len);
+ GNUNET_free (res);
+ return address;
}
+
/**
* Create a socketaddr from a HTTP address
*
- * @param addr sockaddr * address
- * @param addrlen length of the address
+ * @param addr a `sockaddr *` address
+ * @param addrlen length of the @a addr
* @param res the result:
- * GNUNET_SYSERR, invalid input,
- * GNUNET_YES: could convert to ip,
- * GNUNET_NO: valid input but could not convert to ip (hostname?)
+ * #GNUNET_SYSERR, invalid input,
+ * #GNUNET_YES: could convert to ip,
+ * #GNUNET_NO: valid input but could not convert to ip (hostname?)
* @return the string
*/
struct sockaddr *
-http_common_socket_from_address (const void *addr, size_t addrlen, int *res)
+http_common_socket_from_address (const void *addr,
+ size_t addrlen,
+ int *res)
{
+ const struct HttpAddress *ha;
+ struct SplittedHTTPAddress * spa;
struct sockaddr_storage *s;
- char *addrs;
- char *addrs_org;
- char *addrs_end;
- (*res) = GNUNET_SYSERR;
+ char * to_conv;
+ size_t urlen;
+ (*res) = GNUNET_SYSERR;
+ ha = (const struct HttpAddress *) addr;
if (NULL == addr)
- {
- GNUNET_break (0);
- return NULL;
- }
+ {
+ GNUNET_break(0);
+ return NULL ;
+ }
if (0 >= addrlen)
- {
- GNUNET_break (0);
- return NULL;
- }
- if (((char *) addr)[addrlen-1] != '\0')
- {
- GNUNET_break (0);
- return NULL;
- }
-
- addrs_org = strdup ((char *) addr);
- addrs = strstr (addrs_org , "://");
- if (NULL == addrs)
{
- GNUNET_break (0);
- GNUNET_free (addrs_org);
- return NULL;
+ GNUNET_break(0);
+ return NULL ;
}
-
- if (strlen (addrs) < 3)
+ if (addrlen < sizeof(struct HttpAddress))
{
- GNUNET_break (0);
- GNUNET_free (addrs_org);
- return NULL;
+ GNUNET_break(0);
+ return NULL ;
+ }
+ urlen = ntohl (ha->urlen);
+ if (sizeof(struct HttpAddress) + urlen != addrlen)
+ {
+ /* This is a legacy addresses */
+ return NULL ;
+ }
+ if (addrlen < sizeof(struct HttpAddress) + urlen)
+ {
+ /* This is a legacy addresses */
+ return NULL ;
+ }
+ if (((char *) addr)[addrlen - 1] != '\0')
+ {
+ GNUNET_break(0);
+ return NULL ;
+ }
+ spa = http_split_address ((const char *) &ha[1]);
+ if (NULL == spa)
+ {
+ (*res) = GNUNET_SYSERR;
+ return NULL;
}
- addrs += 3;
-
- addrs_end = strchr (addrs, '/');
- if (NULL != addrs_end)
- addrs[strlen (addrs) - strlen(addrs_end)] = '\0';
-
- s = GNUNET_malloc (sizeof (struct sockaddr_storage));
- if (GNUNET_SYSERR == GNUNET_STRINGS_to_address_ip (addrs, strlen(addrs), s))
+ s = GNUNET_new (struct sockaddr_storage);
+ GNUNET_asprintf (&to_conv, "%s:%u", spa->host, spa->port);
+ if (GNUNET_SYSERR == GNUNET_STRINGS_to_address_ip (to_conv, strlen(to_conv), s))
{
/* could be a hostname */
- GNUNET_free (s);
- GNUNET_free (addrs_org);
+ GNUNET_free (s);
(*res) = GNUNET_NO;
- return NULL;
+ s = NULL;
+ }
+ else if ((AF_INET != s->ss_family) && (AF_INET6 != s->ss_family))
+ {
+
+ GNUNET_free (s);
+ (*res) = GNUNET_SYSERR;
+ s = NULL;
}
else
{
- if ((AF_INET != s->ss_family) && (AF_INET6 != s->ss_family))
- {
- GNUNET_break (0);
- GNUNET_free (s);
- GNUNET_free (addrs_org);
- (*res) = GNUNET_SYSERR;
- return NULL;
- }
+ (*res) = GNUNET_YES;
}
- (*res) = GNUNET_YES;
- GNUNET_free (addrs_org);
+ http_clean_splitted (spa);
+ GNUNET_free (to_conv);
return (struct sockaddr *) s;
}
+
/**
* Get the length of an address
*
* @return the size
*/
size_t
-http_common_address_get_size (const void *addr)
+http_common_address_get_size (const struct HttpAddress * addr)
{
- return strlen (addr) + 1;
+ return sizeof (struct HttpAddress) + ntohl(addr->urlen);
}
+
/**
* Compare addr1 to addr2
*
* @param addrlen1 address 1 length
* @param addr2 address2
* @param addrlen2 address 2 length
- * @return GNUNET_YES if equal, GNUNET_NO if not, GNUNET_SYSERR on error
+ * @return #GNUNET_YES if equal, #GNUNET_NO if not, #GNUNET_SYSERR on error
*/
size_t
-http_common_cmp_addresses (const void *addr1, size_t addrlen1, const void *addr2, size_t addrlen2)
+http_common_cmp_addresses (const void *addr1,
+ size_t addrlen1,
+ const void *addr2,
+ size_t addrlen2)
{
- const char *a1 = (const char *) addr1;
- const char *a2 = (const char *) addr2;
+ const char *a1 = addr1;
+ const char *a2 = addr2;
+ const struct HttpAddress *ha1;
+ const struct HttpAddress *ha2;
+ ha1 = (const struct HttpAddress *) a1;
+ ha2 = (const struct HttpAddress *) a2;
if (NULL == a1)
return GNUNET_SYSERR;
if (addrlen1 != addrlen2)
return GNUNET_NO;
+ if (ha1->urlen != ha2->urlen)
+ return GNUNET_NO;
- if (0 == strcmp (addr1, addr2))
+ if (0 == strcmp ((const char *) &ha1[1],(const char *) &ha2[1]))
return GNUNET_YES;
return GNUNET_NO;
}
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