X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/8efc0c151a0f57612e1aa0abb5b7d536db4cf76a..54b974dcab3a3e8486caf6181ad0555efd181154:/radix.c diff --git a/radix.c b/radix.c index 1c497945..3b149a82 100644 --- a/radix.c +++ b/radix.c @@ -1,111 +1,43 @@ /* - radix.c + * Copyright (c) 1999 Dug Song. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ - base-64 encoding pinched from lynx2-7-2, who pinched it from rpem. - Originally written by Mark Riordan 12 August 1990 and 17 Feb 1991 - and placed in the public domain. - - Dug Song -*/ - #include "includes.h" +#include "uuencode.h" + +RCSID("$OpenBSD: radix.c,v 1.15 2001/01/16 23:58:09 deraadt Exp $"); #ifdef AFS #include -char six2pr[64] = { - 'A','B','C','D','E','F','G','H','I','J','K','L','M', - 'N','O','P','Q','R','S','T','U','V','W','X','Y','Z', - 'a','b','c','d','e','f','g','h','i','j','k','l','m', - 'n','o','p','q','r','s','t','u','v','w','x','y','z', - '0','1','2','3','4','5','6','7','8','9','+','/' -}; - -unsigned char pr2six[256]; - -int uuencode(unsigned char *bufin, unsigned int nbytes, char *bufcoded) -{ - /* ENC is the basic 1 character encoding function to make a char printing */ -#define ENC(c) six2pr[c] - - register char *outptr = bufcoded; - unsigned int i; - - for (i=0; i> 2); /* c1 */ - *(outptr++) = ENC(((*bufin << 4) & 060) | ((bufin[1] >> 4) & 017)); /*c2*/ - *(outptr++) = ENC(((bufin[1] << 2) & 074) | ((bufin[2] >> 6) & 03));/*c3*/ - *(outptr++) = ENC(bufin[2] & 077); /* c4 */ - bufin += 3; - } - if (i == nbytes+1) { - outptr[-1] = '='; - } else if (i == nbytes+2) { - outptr[-1] = '='; - outptr[-2] = '='; - } - *outptr = '\0'; - return(outptr - bufcoded); -} - -int uudecode(const char *bufcoded, unsigned char *bufplain, int outbufsize) -{ - /* single character decode */ -#define DEC(c) pr2six[(unsigned char)c] -#define MAXVAL 63 - - static int first = 1; - int nbytesdecoded, j; - const char *bufin = bufcoded; - register unsigned char *bufout = bufplain; - register int nprbytes; - - /* If this is the first call, initialize the mapping table. */ - if (first) { - first = 0; - for(j=0; j<256; j++) pr2six[j] = MAXVAL+1; - for(j=0; j<64; j++) pr2six[(unsigned char)six2pr[j]] = (unsigned char)j; - } - - /* Strip leading whitespace. */ - while (*bufcoded==' ' || *bufcoded == '\t') bufcoded++; - - /* Figure out how many characters are in the input buffer. - If this would decode into more bytes than would fit into - the output buffer, adjust the number of input bytes downwards. */ - bufin = bufcoded; - while (DEC(*(bufin++)) <= MAXVAL); - nprbytes = bufin - bufcoded - 1; - nbytesdecoded = ((nprbytes+3)/4) * 3; - if (nbytesdecoded > outbufsize) - nprbytes = (outbufsize*4)/3; - - bufin = bufcoded; - - while (nprbytes > 0) { - *(bufout++) = (unsigned char) (DEC(*bufin) << 2 | DEC(bufin[1]) >> 4); - *(bufout++) = (unsigned char) (DEC(bufin[1]) << 4 | DEC(bufin[2]) >> 2); - *(bufout++) = (unsigned char) (DEC(bufin[2]) << 6 | DEC(bufin[3])); - bufin += 4; - nprbytes -= 4; - } - if (nprbytes & 03) { - if (DEC(bufin[-2]) > MAXVAL) - nbytesdecoded -= 2; - else - nbytesdecoded -= 1; - } - return(nbytesdecoded); -} - -typedef unsigned char my_u_char; -typedef unsigned int my_u_int32_t; -typedef unsigned short my_u_short; +typedef u_char my_u_char; +typedef u_int my_u_int32_t; +typedef u_short my_u_short; /* Nasty macros from BIND-4.9.2 */ #define GETSHORT(s, cp) { \ - register my_u_char *t_cp = (my_u_char*)(cp); \ + register my_u_char *t_cp = (my_u_char *)(cp); \ (s) = (((my_u_short)t_cp[0]) << 8) \ | (((my_u_short)t_cp[1])) \ ; \ @@ -113,7 +45,7 @@ typedef unsigned short my_u_short; } #define GETLONG(l, cp) { \ - register my_u_char *t_cp = (my_u_char*)(cp); \ + register my_u_char *t_cp = (my_u_char *)(cp); \ (l) = (((my_u_int32_t)t_cp[0]) << 24) \ | (((my_u_int32_t)t_cp[1]) << 16) \ | (((my_u_int32_t)t_cp[2]) << 8) \ @@ -124,7 +56,7 @@ typedef unsigned short my_u_short; #define PUTSHORT(s, cp) { \ register my_u_short t_s = (my_u_short)(s); \ - register my_u_char *t_cp = (my_u_char*)(cp); \ + register my_u_char *t_cp = (my_u_char *)(cp); \ *t_cp++ = t_s >> 8; \ *t_cp = t_s; \ (cp) += 2; \ @@ -132,7 +64,7 @@ typedef unsigned short my_u_short; #define PUTLONG(l, cp) { \ register my_u_int32_t t_l = (my_u_int32_t)(l); \ - register my_u_char *t_cp = (my_u_char*)(cp); \ + register my_u_char *t_cp = (my_u_char *)(cp); \ *t_cp++ = t_l >> 24; \ *t_cp++ = t_l >> 16; \ *t_cp++ = t_l >> 8; \ @@ -141,9 +73,9 @@ typedef unsigned short my_u_short; } #define GETSTRING(s, p, p_l) { \ - register char* p_targ = (p) + p_l; \ - register char* s_c = (s); \ - register char* p_c = (p); \ + register char *p_targ = (p) + p_l; \ + register char *s_c = (s); \ + register char *p_c = (p); \ while (*p_c && (p_c < p_targ)) { \ *s_c++ = *p_c++; \ } \ @@ -156,103 +88,125 @@ typedef unsigned short my_u_short; } -int creds_to_radix(CREDENTIALS *creds, unsigned char *buf) +int +creds_to_radix(CREDENTIALS *creds, u_char *buf, size_t buflen) { - char *p, *s; - int len; - char temp[2048]; - - p = temp; - *p++ = 1; /* version */ - s = creds->service; while (*s) *p++ = *s++; *p++ = *s; - s = creds->instance; while (*s) *p++ = *s++; *p++ = *s; - s = creds->realm; while (*s) *p++ = *s++; *p++ = *s; - - s = creds->pname; while (*s) *p++ = *s++; *p++ = *s; - s = creds->pinst; while (*s) *p++ = *s++; *p++ = *s; - /* Null string to repeat the realm. */ - *p++ = '\0'; - - PUTLONG(creds->issue_date,p); - { - unsigned int endTime ; - endTime = (unsigned int)krb_life_to_time(creds->issue_date, - creds->lifetime); - PUTLONG(endTime,p); - } - - memcpy(p,&creds->session, sizeof(creds->session)); - p += sizeof(creds->session); - - PUTSHORT(creds->kvno,p); - PUTLONG(creds->ticket_st.length,p); - - memcpy(p,creds->ticket_st.dat, creds->ticket_st.length); - p += creds->ticket_st.length; - len = p - temp; - - return(uuencode(temp, len, buf)); + char *p, *s; + int len; + char temp[2048]; + + p = temp; + *p++ = 1; /* version */ + s = creds->service; + while (*s) + *p++ = *s++; + *p++ = *s; + s = creds->instance; + while (*s) + *p++ = *s++; + *p++ = *s; + s = creds->realm; + while (*s) + *p++ = *s++; + *p++ = *s; + + s = creds->pname; + while (*s) + *p++ = *s++; + *p++ = *s; + s = creds->pinst; + while (*s) + *p++ = *s++; + *p++ = *s; + /* Null string to repeat the realm. */ + *p++ = '\0'; + + PUTLONG(creds->issue_date, p); + { + u_int endTime; + endTime = (u_int) krb_life_to_time(creds->issue_date, + creds->lifetime); + PUTLONG(endTime, p); + } + + memcpy(p, &creds->session, sizeof(creds->session)); + p += sizeof(creds->session); + + PUTSHORT(creds->kvno, p); + PUTLONG(creds->ticket_st.length, p); + + memcpy(p, creds->ticket_st.dat, creds->ticket_st.length); + p += creds->ticket_st.length; + len = p - temp; + + return (uuencode((u_char *)temp, len, (char *)buf, buflen)); } -int radix_to_creds(const char *buf, CREDENTIALS *creds) +int +radix_to_creds(const char *buf, CREDENTIALS *creds) { - char *p; - int len, tl; - char version; - char temp[2048]; - - if (!(len = uudecode(buf, temp, sizeof(temp)))) - return 0; - - p = temp; - - /* check version and length! */ - if (len < 1) return 0; - version = *p; p++; len--; - - GETSTRING(creds->service, p, len); - GETSTRING(creds->instance, p, len); - GETSTRING(creds->realm, p, len); - - GETSTRING(creds->pname, p, len); - GETSTRING(creds->pinst, p, len); - /* Ignore possibly different realm. */ - while (*p && len) p++, len--; - if (len == 0) return 0; - p++, len--; - - /* Enough space for remaining fixed-length parts? */ - if (len < (4 + 4 + sizeof(creds->session) + 2 + 4)) - return 0; - - GETLONG(creds->issue_date,p); - len -= 4; - { - unsigned int endTime; - GETLONG(endTime,p); - len -= 4; - creds->lifetime = krb_time_to_life(creds->issue_date, endTime); - } - - memcpy(&creds->session, p, sizeof(creds->session)); - p += sizeof(creds->session); - len -= sizeof(creds->session); - - GETSHORT(creds->kvno,p); - len -= 2; - GETLONG(creds->ticket_st.length,p); - len -= 4; - - tl = creds->ticket_st.length; - if (tl < 0 || tl > len || tl > sizeof(creds->ticket_st.dat)) - return 0; - - memcpy(creds->ticket_st.dat, p, tl); - p += tl; - len -= tl; - - return 1; + char *p; + int len, tl; + char version; + char temp[2048]; + + len = uudecode(buf, (u_char *)temp, sizeof(temp)); + if (len < 0) + return 0; + + p = temp; + + /* check version and length! */ + if (len < 1) + return 0; + version = *p; + p++; + len--; + + GETSTRING(creds->service, p, len); + GETSTRING(creds->instance, p, len); + GETSTRING(creds->realm, p, len); + + GETSTRING(creds->pname, p, len); + GETSTRING(creds->pinst, p, len); + /* Ignore possibly different realm. */ + while (*p && len) + p++, len--; + if (len == 0) + return 0; + p++, len--; + + /* Enough space for remaining fixed-length parts? */ + if (len < (4 + 4 + sizeof(creds->session) + 2 + 4)) + return 0; + + GETLONG(creds->issue_date, p); + len -= 4; + { + u_int endTime; + GETLONG(endTime, p); + len -= 4; + creds->lifetime = krb_time_to_life(creds->issue_date, endTime); + } + + memcpy(&creds->session, p, sizeof(creds->session)); + p += sizeof(creds->session); + len -= sizeof(creds->session); + + GETSHORT(creds->kvno, p); + len -= 2; + GETLONG(creds->ticket_st.length, p); + len -= 4; + + tl = creds->ticket_st.length; + if (tl < 0 || tl > len || tl > sizeof(creds->ticket_st.dat)) + return 0; + + memcpy(creds->ticket_st.dat, p, tl); + p += tl; + len -= tl; + + return 1; } - #endif /* AFS */