diff options
author | Arch Librarian <arch@canonical.com> | 2004-09-20 16:53:50 +0000 |
---|---|---|
committer | Arch Librarian <arch@canonical.com> | 2004-09-20 16:53:50 +0000 |
commit | 934b6582b4518630a050c8b84853b8e78ed87905 (patch) | |
tree | a94e4b6fb6188311080355b6184bd20939143b99 /methods/rfc2553emu.cc | |
parent | ab559b358d7c390ac63bfcf8d526ca44761aafc5 (diff) | |
download | apt-934b6582b4518630a050c8b84853b8e78ed87905.tar.gz |
Changed to using rfc2553 name resolution for http
Author: jgg
Date: 1999-05-25 05:56:24 GMT
Changed to using rfc2553 name resolution for http
Diffstat (limited to 'methods/rfc2553emu.cc')
-rw-r--r-- | methods/rfc2553emu.cc | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/methods/rfc2553emu.cc b/methods/rfc2553emu.cc new file mode 100644 index 00000000..66fe781f --- /dev/null +++ b/methods/rfc2553emu.cc @@ -0,0 +1,139 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +// $Id: rfc2553emu.cc,v 1.1 1999/05/25 05:56:24 jgg Exp $ +/* ###################################################################### + + RFC 2553 Emulation - Provides emulation for RFC 2553 getaddrinfo, + freeaddrinfo and getnameinfo + + Originally written by Jason Gunthorpe <jgg@debian.org> and placed into + the Public Domain, do with it what you will. + + ##################################################################### */ + /*}}}*/ +#include "rfc2553emu.h" +#include <stdlib.h> +#include <arpa/inet.h> +#include <iostream.h> + +#ifndef HAVE_GETADDRINFO +int getaddrinfo(const char *nodename, const char *servname, + const struct addrinfo *hints, + struct addrinfo **res) +{ + struct addrinfo **Result; + hostent *Addr; + unsigned int Port; + int Proto; + const char *End; + char **CurAddr; + + Addr = gethostbyname(nodename); + if (Addr == 0) + { + if (h_errno == TRY_AGAIN) + return EAI_AGAIN; + if (h_errno == NO_RECOVERY) + return EAI_FAIL; + return EAI_NONAME; + } + + // No A records + if (Addr->h_addr_list[0] == 0) + return EAI_NONAME; + + // Try to convert the service as a number + Port = htons(strtol(servname,(char **)&End,0)); + Proto = SOCK_STREAM; + + if (hints != 0 && hints->ai_socktype != 0) + Proto = hints->ai_socktype; + + // Not a number, must be a name. + if (End != servname + strlen(End)) + { + struct servent *Srv = 0; + + // Do a lookup in the service database + if (hints == 0 || hints->ai_socktype == SOCK_STREAM) + Srv = getservbyname(servname,"tcp"); + if (hints != 0 && hints->ai_socktype == SOCK_DGRAM) + Srv = getservbyname(servname,"udp"); + if (Srv == 0) + return EAI_NONAME; + + // Get the right protocol + Port = Srv->s_port; + if (strcmp(Srv->s_proto,"tcp") == 0) + Proto = SOCK_STREAM; + else + { + if (strcmp(Srv->s_proto,"udp") == 0) + Proto = SOCK_DGRAM; + else + return EAI_NONAME; + } + + if (hints != 0 && hints->ai_socktype != Proto && + hints->ai_socktype != 0) + return EAI_SERVICE; + } + + // Start constructing the linked list + *res = 0; + for (CurAddr = Addr->h_addr_list; *CurAddr != 0; CurAddr++) + { + // New result structure + *Result = (struct addrinfo *)calloc(sizeof(**Result),1); + if (*Result == 0) + { + freeaddrinfo(*res); + return EAI_MEMORY; + } + if (*res == 0) + *res = *Result; + + (*Result)->ai_family = AF_INET; + (*Result)->ai_socktype = Proto; + + // If we have the IPPROTO defines we can set the protocol field + #ifdef IPPROTO_TCP + if (Proto == SOCK_STREAM) + (*Result)->ai_protocol = IPPROTO_TCP; + if (Proto == SOCK_DGRAM) + (*Result)->ai_protocol = IPPROTO_UDP; + #endif + + // Allocate space for the address + (*Result)->ai_addrlen = sizeof(struct sockaddr_in); + (*Result)->ai_addr = (struct sockaddr *)calloc(sizeof(sockaddr_in),1); + if ((*Result)->ai_addr == 0) + { + freeaddrinfo(*res); + return EAI_MEMORY; + } + + // Set the address + ((struct sockaddr_in *)(*Result)->ai_addr)->sin_family = AF_INET; + ((struct sockaddr_in *)(*Result)->ai_addr)->sin_port = Port; + ((struct sockaddr_in *)(*Result)->ai_addr)->sin_addr = *(in_addr *)(*CurAddr); + + Result = &(*Result)->ai_next; + } + + return 0; +} + +void freeaddrinfo(struct addrinfo *ai) +{ + struct addrinfo *Tmp; + while (ai != 0) + { + free(ai->ai_addr); + Tmp = ai; + ai = ai->ai_next; + free(ai); + } +} + +#endif // HAVE_GETADDRINFO |