diff options
Diffstat (limited to 'usr.sbin/bootpd/dovend.c')
| -rw-r--r-- | usr.sbin/bootpd/dovend.c | 413 |
1 files changed, 0 insertions, 413 deletions
diff --git a/usr.sbin/bootpd/dovend.c b/usr.sbin/bootpd/dovend.c deleted file mode 100644 index ba6ab28..0000000 --- a/usr.sbin/bootpd/dovend.c +++ /dev/null @@ -1,413 +0,0 @@ -/* - * dovend.c : Inserts all but the first few vendor options. - */ - -#include <sys/types.h> - -#include <netinet/in.h> -#include <arpa/inet.h> /* inet_ntoa */ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <errno.h> -#include <syslog.h> - -#ifndef USE_BFUNCS -# include <memory.h> -/* Yes, memcpy is OK here (no overlapped copies). */ -# define bcopy(a,b,c) memcpy(b,a,c) -# define bzero(p,l) memset(p,0,l) -# define bcmp(a,b,c) memcmp(a,b,c) -# define index strchr -#endif - -#include "bootp.h" -#include "bootpd.h" -#include "report.h" -#include "dovend.h" - -#ifdef __STDC__ -#define P(args) args -#else -#define P(args) () -#endif - -PRIVATE int insert_generic P((struct shared_bindata *, byte **, int *)); - -/* - * Insert the 2nd part of the options into an option buffer. - * Return amount of space used. - * - * This inserts everything EXCEPT: - * magic cookie, subnet mask, gateway, bootsize, extension file - * Those are handled separately (in bootpd.c) to allow this function - * to be shared between bootpd and bootpef. - * - * When an "extension file" is in use, the options inserted by - * this function go into the exten_file, not the bootp response. - */ - -int -dovend_rfc1497(hp, buf, len) - struct host *hp; - byte *buf; - int len; -{ - int bytesleft = len; - byte *vp = buf; - char *tmpstr; - - static char noroom[] = "%s: No room for \"%s\" option"; -#define NEED(LEN, MSG) do \ - if (bytesleft < (LEN)) { \ - report(LOG_NOTICE, noroom, \ - hp->hostname->string, MSG); \ - return (vp - buf); \ - } while (0) - - /* - * Note that the following have already been inserted: - * magic_cookie, subnet_mask, gateway, bootsize - * - * The remaining options are inserted in order of importance. - * (Of course the importance of each is a matter of opinion.) - * The option insertion order should probably be configurable. - * - * This is the order used in the NetBSD version. Can anyone - * explain why the time_offset and swap_server are first? - * Also, why is the hostname so far down the list? -gwr - */ - - if (hp->flags.time_offset) { - NEED(6, "to"); - *vp++ = TAG_TIME_OFFSET;/* -1 byte */ - *vp++ = 4; /* -1 byte */ - insert_u_long(htonl(hp->time_offset), &vp); /* -4 bytes */ - bytesleft -= 6; - } - /* - * swap server, root path, dump path - */ - if (hp->flags.swap_server) { - NEED(6, "sw"); - /* There is just one SWAP_SERVER, so it is not an iplist. */ - *vp++ = TAG_SWAP_SERVER;/* -1 byte */ - *vp++ = 4; /* -1 byte */ - insert_u_long(hp->swap_server.s_addr, &vp); /* -4 bytes */ - bytesleft -= 6; /* Fix real count */ - } - if (hp->flags.root_path) { - /* - * Check for room for root_path. Add 2 to account for - * TAG_ROOT_PATH and length. - */ - len = strlen(hp->root_path->string); - NEED((len + 2), "rp"); - *vp++ = TAG_ROOT_PATH; - *vp++ = (byte) (len & 0xFF); - bcopy(hp->root_path->string, vp, len); - vp += len; - bytesleft -= len + 2; - } - if (hp->flags.dump_file) { - /* - * Check for room for dump_file. Add 2 to account for - * TAG_DUMP_FILE and length. - */ - len = strlen(hp->dump_file->string); - NEED((len + 2), "df"); - *vp++ = TAG_DUMP_FILE; - *vp++ = (byte) (len & 0xFF); - bcopy(hp->dump_file->string, vp, len); - vp += len; - bytesleft -= len + 2; - } - /* - * DNS server and domain - */ - if (hp->flags.domain_server) { - if (insert_ip(TAG_DOMAIN_SERVER, - hp->domain_server, - &vp, &bytesleft)) - NEED(8, "ds"); - } - if (hp->flags.domain_name) { - /* - * Check for room for domain_name. Add 2 to account for - * TAG_DOMAIN_NAME and length. - */ - len = strlen(hp->domain_name->string); - NEED((len + 2), "dn"); - *vp++ = TAG_DOMAIN_NAME; - *vp++ = (byte) (len & 0xFF); - bcopy(hp->domain_name->string, vp, len); - vp += len; - bytesleft -= len + 2; - } - /* - * NIS (YP) server and domain - */ - if (hp->flags.nis_server) { - if (insert_ip(TAG_NIS_SERVER, - hp->nis_server, - &vp, &bytesleft)) - NEED(8, "ds"); - } - if (hp->flags.nis_domain) { - /* - * Check for room for nis_domain. Add 2 to account for - * TAG_NIS_DOMAIN and length. - */ - len = strlen(hp->nis_domain->string); - NEED((len + 2), "dn"); - *vp++ = TAG_NIS_DOMAIN; - *vp++ = (byte) (len & 0xFF); - bcopy(hp->nis_domain->string, vp, len); - vp += len; - bytesleft -= len + 2; - } - /* IEN 116 name server */ - if (hp->flags.name_server) { - if (insert_ip(TAG_NAME_SERVER, - hp->name_server, - &vp, &bytesleft)) - NEED(8, "ns"); - } - if (hp->flags.rlp_server) { - if (insert_ip(TAG_RLP_SERVER, - hp->rlp_server, - &vp, &bytesleft)) - NEED(8, "rl"); - } - /* Time server (RFC 868) */ - if (hp->flags.time_server) { - if (insert_ip(TAG_TIME_SERVER, - hp->time_server, - &vp, &bytesleft)) - NEED(8, "ts"); - } - /* NTP (time) Server (RFC 1129) */ - if (hp->flags.ntp_server) { - if (insert_ip(TAG_NTP_SERVER, - hp->ntp_server, - &vp, &bytesleft)) - NEED(8, "ts"); - } - /* - * I wonder: If the hostname were "promoted" into the BOOTP - * response part, might these "extension" files possibly be - * shared between several clients? - * - * Also, why not just use longer BOOTP packets with all the - * additional length used as option data. This bootpd version - * already supports that feature by replying with the same - * packet length as the client request packet. -gwr - */ - if (hp->flags.name_switch && hp->flags.send_name) { - /* - * Check for room for hostname. Add 2 to account for - * TAG_HOST_NAME and length. - */ - len = strlen(hp->hostname->string); -#if 0 - /* - * XXX - Too much magic. The user can always set the hostname - * to the short version in the bootptab file. -gwr - */ - if ((len + 2) > bytesleft) { - /* - * Not enough room for full (domain-qualified) hostname, try - * stripping it down to just the first field (host). - */ - tmpstr = hp->hostname->string; - len = 0; - while (*tmpstr && (*tmpstr != '.')) { - tmpstr++; - len++; - } - } -#endif - NEED((len + 2), "hn"); - *vp++ = TAG_HOST_NAME; - *vp++ = (byte) (len & 0xFF); - bcopy(hp->hostname->string, vp, len); - vp += len; - bytesleft -= len + 2; - } - /* - * The rest of these are less important, so they go last. - */ - if (hp->flags.lpr_server) { - if (insert_ip(TAG_LPR_SERVER, - hp->lpr_server, - &vp, &bytesleft)) - NEED(8, "lp"); - } - if (hp->flags.cookie_server) { - if (insert_ip(TAG_COOKIE_SERVER, - hp->cookie_server, - &vp, &bytesleft)) - NEED(8, "cs"); - } - if (hp->flags.log_server) { - if (insert_ip(TAG_LOG_SERVER, - hp->log_server, - &vp, &bytesleft)) - NEED(8, "lg"); - } - /* - * XXX - Add new tags here (to insert options) - */ - if (hp->flags.generic) { - if (insert_generic(hp->generic, &vp, &bytesleft)) - NEED(64, "(generic)"); - } - /* - * The end marker is inserted by the caller. - */ - return (vp - buf); -#undef NEED -} /* dovend_rfc1497 */ - - - -/* - * Insert a tag value, a length value, and a list of IP addresses into the - * memory buffer indirectly pointed to by "dest". "tag" is the RFC1048 tag - * number to use, "iplist" is a pointer to a list of IP addresses - * (struct in_addr_list), and "bytesleft" points to an integer which - * indicates the size of the "dest" buffer. - * - * Return zero if everything fits. - * - * This is used to fill the vendor-specific area of a bootp packet in - * conformance to RFC1048. - */ - -int -insert_ip(tag, iplist, dest, bytesleft) - byte tag; - struct in_addr_list *iplist; - byte **dest; - int *bytesleft; -{ - struct in_addr *addrptr; - unsigned addrcount = 1; - byte *d; - - if (iplist == NULL) - return (0); - - if (*bytesleft >= 6) { - d = *dest; /* Save pointer for later */ - **dest = tag; - (*dest) += 2; - (*bytesleft) -= 2; /* Account for tag and length */ - addrptr = iplist->addr; - addrcount = iplist->addrcount; - while ((*bytesleft >= 4) && (addrcount > 0)) { - insert_u_long(addrptr->s_addr, dest); - addrptr++; - addrcount--; - (*bytesleft) -= 4; /* Four bytes per address */ - } - d[1] = (byte) ((*dest - d - 2) & 0xFF); - } - return (addrcount); -} - - - -/* - * Insert generic data into a bootp packet. The data is assumed to already - * be in RFC1048 format. It is inserted using a first-fit algorithm which - * attempts to insert as many tags as possible. Tags and data which are - * too large to fit are skipped; any remaining tags are tried until they - * have all been exhausted. - * Return zero if everything fits. - */ - -static int -insert_generic(gendata, buff, bytesleft) - struct shared_bindata *gendata; - byte **buff; - int *bytesleft; -{ - byte *srcptr; - int length, numbytes; - int skipped = 0; - - if (gendata == NULL) - return (0); - - srcptr = gendata->data; - length = gendata->length; - while ((length > 0) && (*bytesleft > 0)) { - switch (*srcptr) { - case TAG_END: - length = 0; /* Force an exit on next iteration */ - break; - case TAG_PAD: - *(*buff)++ = *srcptr++; - (*bytesleft)--; - length--; - break; - default: - numbytes = srcptr[1] + 2; - if (*bytesleft < numbytes) - skipped += numbytes; - else { - bcopy(srcptr, *buff, numbytes); - (*buff) += numbytes; - (*bytesleft) -= numbytes; - } - srcptr += numbytes; - length -= numbytes; - break; - } - } /* while */ - return (skipped); -} - -/* - * Insert the unsigned long "value" into memory starting at the byte - * pointed to by the byte pointer (*dest). (*dest) is updated to - * point to the next available byte. - * - * Since it is desirable to internally store network addresses in network - * byte order (in struct in_addr's), this routine expects longs to be - * passed in network byte order. - * - * However, due to the nature of the main algorithm, the long must be in - * host byte order, thus necessitating the use of ntohl() first. - */ - -void -insert_u_long(value, dest) - u_int32 value; - byte **dest; -{ - byte *temp; - int n; - - value = ntohl(value); /* Must use host byte order here */ - temp = (*dest += 4); - for (n = 4; n > 0; n--) { - *--temp = (byte) (value & 0xFF); - value >>= 8; - } - /* Final result is network byte order */ -} - -/* - * Local Variables: - * tab-width: 4 - * c-indent-level: 4 - * c-argdecl-indent: 4 - * c-continued-statement-offset: 4 - * c-continued-brace-offset: -4 - * c-label-offset: -4 - * c-brace-offset: 0 - * End: - */ |
