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author | Tom Yu <tlyu@mit.edu> | 2008-10-15 21:58:43 +0000 |
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committer | Tom Yu <tlyu@mit.edu> | 2008-10-15 21:58:43 +0000 |
commit | a898a72410a38b03ff7c7691ceeea973e3eec6ca (patch) | |
tree | fdd601d15bb96904df7b684048381bb3b9d0e1d3 /src/lib/gssapi/generic/util_token.c | |
parent | 07292e360eb8cad0151ed76edee11a9ce8ca925e (diff) | |
download | krb5-a898a72410a38b03ff7c7691ceeea973e3eec6ca.tar.gz krb5-a898a72410a38b03ff7c7691ceeea973e3eec6ca.tar.xz krb5-a898a72410a38b03ff7c7691ceeea973e3eec6ca.zip |
Untabify. Normalize whitespace. Reindent. Fix some of the most
egregious formatting quirks. Add emacs mode settings to flag
untabified source files.
git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@20876 dc483132-0cff-0310-8789-dd5450dbe970
Diffstat (limited to 'src/lib/gssapi/generic/util_token.c')
-rw-r--r-- | src/lib/gssapi/generic/util_token.c | 311 |
1 files changed, 154 insertions, 157 deletions
diff --git a/src/lib/gssapi/generic/util_token.c b/src/lib/gssapi/generic/util_token.c index 7b8dfed22..b37d9065d 100644 --- a/src/lib/gssapi/generic/util_token.c +++ b/src/lib/gssapi/generic/util_token.c @@ -1,6 +1,7 @@ +/* -*- mode: c; indent-tabs-mode: nil -*- */ /* * Copyright 1993 by OpenVision Technologies, Inc. - * + * * Permission to use, copy, modify, distribute, and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appears in all copies and @@ -10,7 +11,7 @@ * without specific, written prior permission. OpenVision makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. - * + * * OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR @@ -35,130 +36,126 @@ the interfaces, so the code can be fixed if the OSI namespace balloons unexpectedly. */ -/* Each token looks like this: - -0x60 tag for APPLICATION 0, SEQUENCE - (constructed, definite-length) - <length> possible multiple bytes, need to parse/generate - 0x06 tag for OBJECT IDENTIFIER - <moid_length> compile-time constant string (assume 1 byte) - <moid_bytes> compile-time constant string - <inner_bytes> the ANY containing the application token - bytes 0,1 are the token type - bytes 2,n are the token data - -Note that the token type field is a feature of RFC 1964 mechanisms and -is not used by other GSSAPI mechanisms. As such, a token type of -1 -is interpreted to mean that no token type should be expected or -generated. - -For the purposes of this abstraction, the token "header" consists of -the sequence tag and length octets, the mech OID DER encoding, and the -first two inner bytes, which indicate the token type. The token -"body" consists of everything else. - -*/ - -static unsigned int der_length_size(length) - int length; +/* + * Each token looks like this: + * 0x60 tag for APPLICATION 0, SEQUENCE + * (constructed, definite-length) + * <length> possible multiple bytes, need to parse/generate + * 0x06 tag for OBJECT IDENTIFIER + * <moid_length> compile-time constant string (assume 1 byte) + * <moid_bytes> compile-time constant string + * <inner_bytes> the ANY containing the application token + * bytes 0,1 are the token type + * bytes 2,n are the token data + * + * Note that the token type field is a feature of RFC 1964 mechanisms and + * is not used by other GSSAPI mechanisms. As such, a token type of -1 + * is interpreted to mean that no token type should be expected or + * generated. + * + * For the purposes of this abstraction, the token "header" consists of + * the sequence tag and length octets, the mech OID DER encoding, and the + * first two inner bytes, which indicate the token type. The token + * "body" consists of everything else. + */ +static unsigned int +der_length_size(int length) { - if (length < (1<<7)) - return(1); - else if (length < (1<<8)) - return(2); + if (length < (1<<7)) + return(1); + else if (length < (1<<8)) + return(2); #if INT_MAX == 0x7fff - else - return(3); + else + return(3); #else - else if (length < (1<<16)) - return(3); - else if (length < (1<<24)) - return(4); - else - return(5); + else if (length < (1<<16)) + return(3); + else if (length < (1<<24)) + return(4); + else + return(5); #endif } -static void der_write_length(buf, length) - unsigned char **buf; - int length; +static void +der_write_length(unsigned char **buf, int length) { - if (length < (1<<7)) { - *(*buf)++ = (unsigned char) length; - } else { - *(*buf)++ = (unsigned char) (der_length_size(length)+127); + if (length < (1<<7)) { + *(*buf)++ = (unsigned char) length; + } else { + *(*buf)++ = (unsigned char) (der_length_size(length)+127); #if INT_MAX > 0x7fff - if (length >= (1<<24)) - *(*buf)++ = (unsigned char) (length>>24); - if (length >= (1<<16)) - *(*buf)++ = (unsigned char) ((length>>16)&0xff); + if (length >= (1<<24)) + *(*buf)++ = (unsigned char) (length>>24); + if (length >= (1<<16)) + *(*buf)++ = (unsigned char) ((length>>16)&0xff); #endif - if (length >= (1<<8)) - *(*buf)++ = (unsigned char) ((length>>8)&0xff); - *(*buf)++ = (unsigned char) (length&0xff); - } + if (length >= (1<<8)) + *(*buf)++ = (unsigned char) ((length>>8)&0xff); + *(*buf)++ = (unsigned char) (length&0xff); + } } /* returns decoded length, or < 0 on failure. Advances buf and decrements bufsize */ -static int der_read_length(buf, bufsize) - unsigned char **buf; - int *bufsize; +static int +der_read_length(unsigned char **buf, int *bufsize) { - unsigned char sf; - int ret; - - if (*bufsize < 1) - return(-1); - sf = *(*buf)++; - (*bufsize)--; - if (sf & 0x80) { - if ((sf &= 0x7f) > ((*bufsize)-1)) - return(-1); - if (sf > sizeof(int)) - return (-1); - ret = 0; - for (; sf; sf--) { - ret = (ret<<8) + (*(*buf)++); - (*bufsize)--; - } - } else { - ret = sf; - } - - return(ret); + unsigned char sf; + int ret; + + if (*bufsize < 1) + return(-1); + sf = *(*buf)++; + (*bufsize)--; + if (sf & 0x80) { + if ((sf &= 0x7f) > ((*bufsize)-1)) + return(-1); + if (sf > sizeof(int)) + return (-1); + ret = 0; + for (; sf; sf--) { + ret = (ret<<8) + (*(*buf)++); + (*bufsize)--; + } + } else { + ret = sf; + } + + return(ret); } /* returns the length of a token, given the mech oid and the body size */ -unsigned int g_token_size(mech, body_size) - const gss_OID_desc * mech; - unsigned int body_size; +unsigned int +g_token_size(const gss_OID_desc * mech, unsigned int body_size) { - /* set body_size to sequence contents size */ - body_size += 4 + (int) mech->length; /* NEED overflow check */ - return(1 + der_length_size(body_size) + body_size); + /* set body_size to sequence contents size */ + body_size += 4 + (int) mech->length; /* NEED overflow check */ + return(1 + der_length_size(body_size) + body_size); } /* fills in a buffer with the token header. The buffer is assumed to be the right size. buf is advanced past the token header */ -void g_make_token_header(mech, body_size, buf, tok_type) - const gss_OID_desc * mech; - unsigned int body_size; - unsigned char **buf; - int tok_type; +void +g_make_token_header( + const gss_OID_desc * mech, + unsigned int body_size, + unsigned char **buf, + int tok_type) { - *(*buf)++ = 0x60; - der_write_length(buf, (tok_type == -1) ?2:4 + mech->length + body_size); - *(*buf)++ = 0x06; - *(*buf)++ = (unsigned char) mech->length; - TWRITE_STR(*buf, mech->elements, mech->length); - if (tok_type != -1) { - *(*buf)++ = (unsigned char) ((tok_type>>8)&0xff); - *(*buf)++ = (unsigned char) (tok_type&0xff); - } + *(*buf)++ = 0x60; + der_write_length(buf, (tok_type == -1) ?2:4 + mech->length + body_size); + *(*buf)++ = 0x06; + *(*buf)++ = (unsigned char) mech->length; + TWRITE_STR(*buf, mech->elements, mech->length); + if (tok_type != -1) { + *(*buf)++ = (unsigned char) ((tok_type>>8)&0xff); + *(*buf)++ = (unsigned char) (tok_type&0xff); + } } /* @@ -170,63 +167,63 @@ void g_make_token_header(mech, body_size, buf, tok_type) * *body_size are left unmodified on error. */ -gss_int32 g_verify_token_header(mech, body_size, buf_in, tok_type, toksize_in, - wrapper_required) - const gss_OID_desc * mech; - unsigned int *body_size; - unsigned char **buf_in; - int tok_type; - unsigned int toksize_in; - int wrapper_required; +gss_int32 +g_verify_token_header( + const gss_OID_desc * mech, + unsigned int *body_size, + unsigned char **buf_in, + int tok_type, + unsigned int toksize_in, + int wrapper_required) { - unsigned char *buf = *buf_in; - int seqsize; - gss_OID_desc toid; - int toksize = toksize_in; - - if ((toksize-=1) < 0) - return(G_BAD_TOK_HEADER); - if (*buf++ != 0x60) { - if (wrapper_required) - return(G_BAD_TOK_HEADER); - buf--; - toksize++; - goto skip_wrapper; - } - - if ((seqsize = der_read_length(&buf, &toksize)) < 0) - return(G_BAD_TOK_HEADER); - - if (seqsize != toksize) - return(G_BAD_TOK_HEADER); - - if ((toksize-=1) < 0) - return(G_BAD_TOK_HEADER); - if (*buf++ != 0x06) - return(G_BAD_TOK_HEADER); - - if ((toksize-=1) < 0) - return(G_BAD_TOK_HEADER); - toid.length = *buf++; - - if ((toksize-=toid.length) < 0) - return(G_BAD_TOK_HEADER); - toid.elements = buf; - buf+=toid.length; - - if (! g_OID_equal(&toid, mech)) - return G_WRONG_MECH; + unsigned char *buf = *buf_in; + int seqsize; + gss_OID_desc toid; + int toksize = toksize_in; + + if ((toksize-=1) < 0) + return(G_BAD_TOK_HEADER); + if (*buf++ != 0x60) { + if (wrapper_required) + return(G_BAD_TOK_HEADER); + buf--; + toksize++; + goto skip_wrapper; + } + + if ((seqsize = der_read_length(&buf, &toksize)) < 0) + return(G_BAD_TOK_HEADER); + + if (seqsize != toksize) + return(G_BAD_TOK_HEADER); + + if ((toksize-=1) < 0) + return(G_BAD_TOK_HEADER); + if (*buf++ != 0x06) + return(G_BAD_TOK_HEADER); + + if ((toksize-=1) < 0) + return(G_BAD_TOK_HEADER); + toid.length = *buf++; + + if ((toksize-=toid.length) < 0) + return(G_BAD_TOK_HEADER); + toid.elements = buf; + buf+=toid.length; + + if (! g_OID_equal(&toid, mech)) + return G_WRONG_MECH; skip_wrapper: - if (tok_type != -1) { - if ((toksize-=2) < 0) - return(G_BAD_TOK_HEADER); - - if ((*buf++ != ((tok_type>>8)&0xff)) || - (*buf++ != (tok_type&0xff))) - return(G_WRONG_TOKID); - } - *buf_in = buf; - *body_size = toksize; - - return 0; + if (tok_type != -1) { + if ((toksize-=2) < 0) + return(G_BAD_TOK_HEADER); + + if ((*buf++ != ((tok_type>>8)&0xff)) || + (*buf++ != (tok_type&0xff))) + return(G_WRONG_TOKID); + } + *buf_in = buf; + *body_size = toksize; + + return 0; } |