| 1 | /*
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| 2 | * Copyright (c) 1995-2000, Index Data
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| 3 | * See the file LICENSE for details.
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| 4 | * Sebastian Hammer, Adam Dickmeiss
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| 5 | *
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| 6 | * $Log$
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| 7 | * Revision 1.1 2000/08/03 03:11:12 johnmcp
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| 8 | * Added the YAZ toolkit source to the packages directory (for z39.50 stuff)
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| 9 | *
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| 10 | * Revision 1.12 2000/02/29 13:44:55 adam
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| 11 | * Check for config.h (currently not generated).
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| 12 | *
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| 13 | * Revision 1.11 2000/01/31 13:15:21 adam
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| 14 | * Removed uses of assert(3). Cleanup of ODR. CCL parser update so
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| 15 | * that some characters are not surrounded by spaces in resulting term.
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| 16 | * ILL-code updates.
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| 17 | *
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| 18 | * Revision 1.10 1999/11/30 13:47:11 adam
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| 19 | * Improved installation. Moved header files to include/yaz.
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| 20 | *
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| 21 | * Revision 1.9 1999/04/20 09:56:48 adam
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| 22 | * Added 'name' paramter to encoder/decoder routines (typedef Odr_fun).
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| 23 | * Modified all encoders/decoders to reflect this change.
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| 24 | *
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| 25 | * Revision 1.8 1999/01/08 11:23:21 adam
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| 26 | * Added const modifier to some of the BER/ODR encoding routines.
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| 27 | *
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| 28 | * Revision 1.7 1995/09/29 17:12:16 quinn
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| 29 | * Smallish
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| 30 | *
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| 31 | * Revision 1.6 1995/09/27 15:02:54 quinn
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| 32 | * Modified function heads & prototypes.
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| 33 | *
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| 34 | * Revision 1.5 1995/05/16 08:50:43 quinn
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| 35 | * License, documentation, and memory fixes
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| 36 | *
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| 37 | * Revision 1.4 1995/04/18 08:15:13 quinn
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| 38 | * Added dynamic memory allocation on encoding (whew). Code is now somewhat
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| 39 | * neater. We'll make the same change for decoding one day.
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| 40 | *
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| 41 | * Revision 1.3 1995/03/08 12:12:04 quinn
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| 42 | * Added better error checking.
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| 43 | *
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| 44 | * Revision 1.2 1995/02/03 17:04:31 quinn
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| 45 | * *** empty log message ***
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| 46 | *
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| 47 | * Revision 1.1 1995/02/02 20:38:49 quinn
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| 48 | * Updates.
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| 49 | *
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| 50 | *
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| 51 | */
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| 52 | #if HAVE_CONFIG_H
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| 53 | #include <config.h>
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| 54 | #endif
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| 55 |
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| 56 | #include <yaz/odr.h>
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| 57 |
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| 58 | int ber_bitstring(ODR o, Odr_bitmask *p, int cons)
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| 59 | {
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| 60 | int res, len;
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| 61 | const unsigned char *base;
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| 62 |
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| 63 | switch (o->direction)
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| 64 | {
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| 65 | case ODR_DECODE:
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| 66 | if ((res = ber_declen(o->bp, &len)) < 0)
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| 67 | {
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| 68 | o->error = OPROTO;
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| 69 | return 0;
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| 70 | }
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| 71 | o->bp += res;
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| 72 | if (cons) /* fetch component strings */
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| 73 | {
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| 74 | base = o->bp;
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| 75 | while (odp_more_chunks(o, base, len))
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| 76 | if (!odr_bitstring(o, &p, 0, 0))
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| 77 | return 0;
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| 78 | return 1;
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| 79 | }
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| 80 | /* primitive bitstring */
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| 81 | if (len < 0)
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| 82 | {
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| 83 | o->error = OOTHER;
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| 84 | return 0;
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| 85 | }
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| 86 | if (len == 0)
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| 87 | return 1;
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| 88 | if (len - 1 > ODR_BITMASK_SIZE)
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| 89 | {
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| 90 | o->error = OOTHER;
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| 91 | return 0;
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| 92 | }
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| 93 | o->bp++; /* silently ignore the unused-bits field */
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| 94 | len--;
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| 95 | memcpy(p->bits + p->top + 1, o->bp, len);
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| 96 | p->top += len;
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| 97 | o->bp += len;
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| 98 | return 1;
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| 99 | case ODR_ENCODE:
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| 100 | if ((res = ber_enclen(o, p->top + 2, 5, 0)) < 0)
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| 101 | return 0;
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| 102 | if (odr_putc(o, 0) < 0) /* no unused bits here */
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| 103 | return 0;
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| 104 | if (p->top < 0)
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| 105 | return 1;
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| 106 | if (odr_write(o, p->bits, p->top + 1) < 0)
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| 107 | return 0;
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| 108 | return 1;
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| 109 | case ODR_PRINT: return 1;
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| 110 | default: o->error = OOTHER; return 0;
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| 111 | }
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| 112 | }
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