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implement gethostbyaddr

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This commit is contained in:
megazig 2015-08-16 08:38:56 -05:00
parent 7d63ab5050
commit cf8ef09282
2 changed files with 73 additions and 0 deletions
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1
libctru/include/netdb.h
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@ -22,6 +22,7 @@ extern "C" {
extern int h_errno; extern int h_errno;
struct hostent* gethostbyname(const char *name); struct hostent* gethostbyname(const char *name);
struct hostent* gethostbyaddr(const char *addr, int len, int type);
void herror(const char *s); void herror(const char *s);
const char* hstrerror(int err); const char* hstrerror(int err);

72
libctru/source/services/soc/soc_gethostbyaddr.c Normal file
View File

@ -0,0 +1,72 @@
#include "soc_common.h"
#include <netdb.h>
#define MAX_HOSTENT_RESULTS 16
static struct hostent SOC_hostent;
static char *SOC_hostent_results[MAX_HOSTENT_RESULTS+1];
static char *SOC_hostent_alias = NULL;
int h_errno = 0;
struct hostent* gethostbyaddr(const char *addr, int len, int type)
{
int ret = 0;
u32 *cmdbuf = getThreadCommandBuffer();
u32 saved_threadstorage[2];
static u8 outbuf[0x1A88];
h_errno = 0;
cmdbuf[0] = 0x000E00C2;
cmdbuf[1] = len;
cmdbuf[2] = type;
cmdbuf[3] = sizeof(outbuf);
cmdbuf[4] = (len << 14) | 0x1002;
cmdbuf[5] = (u32)addr;
saved_threadstorage[0] = cmdbuf[0x100>>2];
saved_threadstorage[1] = cmdbuf[0x104>>2];
cmdbuf[0x100>>2] = (sizeof(outbuf) << 14) | 2;
cmdbuf[0x104>>2] = (u32)outbuf;
ret = svcSendSyncRequest(SOCU_handle);
if(ret != 0) {
h_errno = NO_RECOVERY;
return NULL;
}
cmdbuf[0x100>>2] = saved_threadstorage[0];
cmdbuf[0x104>>2] = saved_threadstorage[1];
ret = (int)cmdbuf[1];
if(ret == 0)
ret = _net_convert_error(cmdbuf[2]);
if(ret < 0) {
/* TODO: set h_errno based on ret */
h_errno = HOST_NOT_FOUND;
return NULL;
}
u32 num_results, i;
memcpy(&num_results, (char*)outbuf+4, sizeof(num_results));
if(num_results > MAX_HOSTENT_RESULTS)
num_results = MAX_HOSTENT_RESULTS;
SOC_hostent.h_name = (char*)outbuf + 8;
SOC_hostent.h_aliases = &SOC_hostent_alias;
SOC_hostent.h_addrtype = AF_INET;
SOC_hostent.h_length = 4;
SOC_hostent.h_addr_list = SOC_hostent_results;
SOC_hostent_alias = NULL;
for(i = 0; i < num_results; ++i)
SOC_hostent_results[i] = (char*)outbuf + 0x1908 + i*0x10;
SOC_hostent_results[num_results] = NULL;
return &SOC_hostent;
}