diff options
Diffstat (limited to 'mdk-stage1/dietlibc/libcruft/dnscruft2.c')
| -rw-r--r-- | mdk-stage1/dietlibc/libcruft/dnscruft2.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/mdk-stage1/dietlibc/libcruft/dnscruft2.c b/mdk-stage1/dietlibc/libcruft/dnscruft2.c deleted file mode 100644 index d4e132e42..000000000 --- a/mdk-stage1/dietlibc/libcruft/dnscruft2.c +++ /dev/null @@ -1,173 +0,0 @@ -#include <string.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <netdb.h> -#include <stdlib.h> -#include <arpa/inet.h> -#include <sys/poll.h> -#include <unistd.h> -#include <errno.h> -#include <arpa/nameser.h> -#include <resolv.h> -#include "dietfeatures.h" -#include "dietdns.h" - -extern void __dns_readstartfiles(void); - -extern int __dns_decodename(unsigned char *packet,unsigned int offset,unsigned char *dest, - unsigned int maxlen,unsigned char* behindpacket); - -/* Oh boy, this interface sucks so badly, there are no words for it. - * Not one, not two, but _three_ error signalling methods! (*h_errnop - * nonzero? return value nonzero? *RESULT zero?) The glibc goons - * really outdid themselves with this one. */ -#ifdef WANT_FULL_RESOLV_CONF -static int __dns_gethostbyx_r_inner(const char* name, struct hostent* result, - char *buf, size_t buflen, - struct hostent **RESULT, int *h_errnop, int lookfor); - -static int __dns_gethostbyx_r_inner(const char* name, struct hostent* result, - char *buf, size_t buflen, - struct hostent **RESULT, int *h_errnop, int lookfor) { -#else -int __dns_gethostbyx_r(const char* name, struct hostent* result, - char *buf, size_t buflen, - struct hostent **RESULT, int *h_errnop, int lookfor) { -#endif - int names,ips; - unsigned char *cur; - unsigned char *max; - unsigned char inpkg[1500]; - char* tmp; - int size; - - if (lookfor==1) { - result->h_addrtype=AF_INET; - result->h_length=4; - } else { - result->h_addrtype=AF_INET6; - result->h_length=16; - } - result->h_aliases=(char**)(buf+8*sizeof(char*)); - result->h_addr_list=(char**)buf; - result->h_aliases[0]=0; - - cur=buf+16*sizeof(char*); - max=buf+buflen; - names=ips=0; - - if ((size=res_query(name,C_IN,lookfor,inpkg,512))<0) { -invalidpacket: - *h_errnop=HOST_NOT_FOUND; - return -1; - } - { - tmp=inpkg+12; - { - char Name[257]; - unsigned short q=((unsigned short)inpkg[4]<<8)+inpkg[5]; - while (q>0) { - if (tmp>(char*)inpkg+size) goto invalidpacket; - while (*tmp) { tmp+=*tmp+1; if (tmp>(char*)inpkg+size) goto invalidpacket; } - tmp+=5; - --q; - } - if (tmp>(char*)inpkg+size) goto invalidpacket; - q=((unsigned short)inpkg[6]<<8)+inpkg[7]; - if (q<1) goto nodata; - while (q>0) { - int decofs=__dns_decodename(inpkg,(size_t)(tmp-(char*)inpkg),Name,256,inpkg+size); - if (decofs<0) break; - tmp=inpkg+decofs; - --q; - if (tmp[0]!=0 || tmp[1]!=lookfor || /* TYPE != A */ - tmp[2]!=0 || tmp[3]!=1) { /* CLASS != IN */ - if (tmp[1]==5) { /* CNAME */ - tmp+=10; - decofs=__dns_decodename(inpkg,(size_t)(tmp-(char*)inpkg),Name,256,inpkg+size); - if (decofs<0) break; - tmp=inpkg+decofs; - } else - break; - continue; - } - tmp+=10; /* skip type, class, TTL and length */ - { - int slen; - if (lookfor==1 || lookfor==28) /* A or AAAA*/ { - slen=strlen(Name); - if (cur+slen+8+(lookfor==28?12:0)>=max) { *h_errnop=NO_RECOVERY; return -1; } - } else if (lookfor==12) /* PTR */ { - decofs=__dns_decodename(inpkg,(size_t)(tmp-(char*)inpkg),Name,256,inpkg+size); - if (decofs<0) break; - tmp=inpkg+decofs; - slen=strlen(Name); - } else - slen=strlen(Name); - strcpy(cur,Name); - if (names==0) - result->h_name=cur; - else - result->h_aliases[names-1]=cur; - result->h_aliases[names]=0; - if (names<8) ++names; -/* cur+=slen+1; */ - cur+=(slen|3)+1; - result->h_addr_list[ips++] = cur; - if (lookfor==1) /* A */ { - *(int*)cur=*(int*)tmp; - cur+=4; - result->h_addr_list[ips]=0; - } else if (lookfor==28) /* AAAA */ { - { - int k; - for (k=0; k<16; ++k) cur[k]=tmp[k]; - } - cur+=16; - result->h_addr_list[ips]=0; - } - } -/* puts(Name); */ - } - } - } - if (!names) { -nodata: - *h_errnop=NO_DATA; - return -1; - } - *h_errnop=0; - *RESULT=result; - return 0; -} - -#ifdef WANT_FULL_RESOLV_CONF -extern int __dns_search; -extern char *__dns_domains[]; - -int __dns_gethostbyx_r(const char* name, struct hostent* result, - char *buf, size_t buflen, - struct hostent **RESULT, int *h_errnop, int lookfor) { - const char *tmp=name; - char Buf[MAXDNAME+1]; - int res; - size_t len=strlen(name); - int count=0; - __dns_readstartfiles(); - memmove(Buf,name,len); - Buf[len]=Buf[MAXDNAME]=0; -// printf("appending %d: %p\n",count,__dns_domains[count]); - while ((res=__dns_gethostbyx_r_inner(tmp,result,buf,buflen,RESULT,h_errnop,lookfor))) { - if (res==-1 && *h_errnop!=HOST_NOT_FOUND) break; - if (count==__dns_search) break; - Buf[len]='.'; -// printf("appending %d: %p (%s)\n",count,__dns_domains[count],__dns_domains[count]); - memccpy(Buf+len+1,__dns_domains[count],0,MAXDNAME-len-1); - tmp=Buf; - ++count; - } - return res; -} -#endif - |