Remove converter-sample.c, as it is not part of the runtime library
This commit is contained in:
parent
7ee9a775b8
commit
96afdfdc64
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@ -8,5 +8,5 @@ AM_CFLAGS = -fPIC -Wall
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lib_LTLIBRARIES = libasn1c.la
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libasn1c_la_SOURCES = ANY.c constraints.c GeneralizedTime.c NumericString.c T61String.c asn_codecs_prim.c constr_CHOICE.c GeneralString.c ObjectDescriptor.c TeletexString.c asn_SEQUENCE_OF.c constr_SEQUENCE.c GraphicString.c OBJECT_IDENTIFIER.c UniversalString.c asn_SET_OF.c constr_SEQUENCE_OF.c IA5String.c OCTET_STRING.c UTCTime.c ber_decoder.c constr_SET.c INTEGER.c per_decoder.c UTF8String.c ber_tlv_length.c constr_SET_OF.c ISO646String.c per_encoder.c VideotexString.c ber_tlv_tag.c constr_TYPE.c NativeEnumerated.c per_support.c VisibleString.c BIT_STRING.c converter-sample.c NativeInteger.c PrintableString.c xer_decoder.c BMPString.c der_encoder.c NativeReal.c REAL.c xer_encoder.c BOOLEAN.c ENUMERATED.c NULL.c RELATIVE-OID.c xer_support.c
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libasn1c_la_SOURCES = ANY.c constraints.c GeneralizedTime.c NumericString.c T61String.c asn_codecs_prim.c constr_CHOICE.c GeneralString.c ObjectDescriptor.c TeletexString.c asn_SEQUENCE_OF.c constr_SEQUENCE.c GraphicString.c OBJECT_IDENTIFIER.c UniversalString.c asn_SET_OF.c constr_SEQUENCE_OF.c IA5String.c OCTET_STRING.c UTCTime.c ber_decoder.c constr_SET.c INTEGER.c per_decoder.c UTF8String.c ber_tlv_length.c constr_SET_OF.c ISO646String.c per_encoder.c VideotexString.c ber_tlv_tag.c constr_TYPE.c NativeEnumerated.c per_support.c VisibleString.c BIT_STRING.c NativeInteger.c PrintableString.c xer_decoder.c BMPString.c der_encoder.c NativeReal.c REAL.c xer_encoder.c BOOLEAN.c ENUMERATED.c NULL.c RELATIVE-OID.c xer_support.c
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@ -1,725 +0,0 @@
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/*
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* Generic converter template for a selected ASN.1 type.
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* Copyright (c) 2005, 2006 Lev Walkin <vlm@lionet.info>. All rights reserved.
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*
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* To compile with your own ASN.1 type, please redefine the PDU as shown:
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*
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* cc -DPDU=MyCustomType -o myDecoder.o -c converter-sample.c
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#include <stdlib.h> /* for atoi(3) */
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#include <unistd.h> /* for getopt(3) */
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#include <string.h> /* for strerror(3) */
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#include <sysexits.h> /* for EX_* exit codes */
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#include <assert.h> /* for assert(3) */
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#include <errno.h> /* for errno */
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#include <asn_application.h>
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#include <asn_internal.h> /* for _ASN_DEFAULT_STACK_MAX */
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/* Convert "Type" defined by -DPDU into "asn_DEF_Type" */
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#define ASN_DEF_PDU(t) asn_DEF_ ## t
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#define DEF_PDU_Type(t) ASN_DEF_PDU(t)
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#define PDU_Type DEF_PDU_Type(PDU)
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extern asn_TYPE_descriptor_t PDU_Type; /* ASN.1 type to be decoded */
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#ifdef ASN_PDU_COLLECTION /* Generated by asn1c: -pdu=... */
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extern asn_TYPE_descriptor_t *asn_pdu_collection[];
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#endif
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/*
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* Open file and parse its contens.
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*/
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static void *data_decode_from_file(asn_TYPE_descriptor_t *asnTypeOfPDU,
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FILE *file, const char *name, ssize_t suggested_bufsize, int first_pdu);
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static int write_out(const void *buffer, size_t size, void *key);
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static FILE *argument_to_file(char *av[], int idx);
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static char *argument_to_name(char *av[], int idx);
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int opt_debug; /* -d (or -dd) */
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static int opt_check; /* -c (constraints checking) */
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static int opt_stack; /* -s (maximum stack size) */
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static int opt_ippad; /* -per-padded (PER input is byte-padded) */
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static int opt_onepdu; /* -1 (decode single PDU) */
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/* Input data format selector */
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static enum input_format {
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INP_BER, /* -iber: BER input */
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INP_XER, /* -ixer: XER input */
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INP_PER /* -iper: Unaligned PER input */
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} iform; /* -i<format> */
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/* Output data format selector */
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static enum output_format {
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OUT_XER, /* -oxer: XER (XML) output */
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OUT_DER, /* -oder: DER (BER) output */
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OUT_PER, /* -oper: Unaligned PER output */
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OUT_TEXT, /* -otext: semi-structured text */
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OUT_NULL /* -onull: No pretty-printing */
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} oform; /* -o<format> */
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/* Debug output function */
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static inline void
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DEBUG(const char *fmt, ...) {
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va_list ap;
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if(!opt_debug) return;
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fprintf(stderr, "AD: ");
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n");
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}
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int
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main(int ac, char *av[]) {
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static asn_TYPE_descriptor_t *pduType = &PDU_Type;
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ssize_t suggested_bufsize = 8192; /* close or equal to stdio buffer */
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int number_of_iterations = 1;
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int num;
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int ch;
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/* Figure out if Unaligned PER needs to be default */
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if(pduType->uper_decoder)
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iform = INP_PER;
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/*
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* Pocess the command-line argments.
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*/
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while((ch = getopt(ac, av, "i:o:1b:cdn:p:hs:")) != -1)
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switch(ch) {
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case 'i':
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if(optarg[0] == 'b') { iform = INP_BER; break; }
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if(optarg[0] == 'x') { iform = INP_XER; break; }
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if(pduType->uper_decoder
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&& optarg[0] == 'p') { iform = INP_PER; break; }
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fprintf(stderr, "-i<format>: '%s': improper format selector\n",
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optarg);
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exit(EX_UNAVAILABLE);
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case 'o':
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if(optarg[0] == 'd') { oform = OUT_DER; break; }
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if(pduType->uper_encoder
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&& optarg[0] == 'p') { oform = OUT_PER; break; }
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if(optarg[0] == 'x') { oform = OUT_XER; break; }
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if(optarg[0] == 't') { oform = OUT_TEXT; break; }
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if(optarg[0] == 'n') { oform = OUT_NULL; break; }
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fprintf(stderr, "-o<format>: '%s': improper format selector\n",
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optarg);
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exit(EX_UNAVAILABLE);
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case '1':
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opt_onepdu = 1;
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break;
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case 'b':
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suggested_bufsize = atoi(optarg);
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if(suggested_bufsize < 1
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|| suggested_bufsize > 16 * 1024 * 1024) {
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fprintf(stderr,
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"-b %s: Improper buffer size (1..16M)\n",
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optarg);
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exit(EX_UNAVAILABLE);
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}
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break;
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case 'c':
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opt_check = 1;
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break;
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case 'd':
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opt_debug++; /* Double -dd means ASN.1 debug */
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break;
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case 'n':
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number_of_iterations = atoi(optarg);
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if(number_of_iterations < 1) {
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fprintf(stderr,
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"-n %s: Improper iterations count\n", optarg);
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exit(EX_UNAVAILABLE);
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}
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break;
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case 'p':
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if(strcmp(optarg, "er-padded") == 0) {
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opt_ippad = 1;
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break;
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}
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#ifdef ASN_PDU_COLLECTION
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if(strcmp(optarg, "list") == 0) {
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asn_TYPE_descriptor_t **pdu = asn_pdu_collection;
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fprintf(stderr, "Available PDU types:\n");
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for(; *pdu; pdu++) printf("%s\n", (*pdu)->name);
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exit(0);
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} else if(optarg[0] >= 'A' && optarg[0] <= 'Z') {
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asn_TYPE_descriptor_t **pdu = asn_pdu_collection;
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while(*pdu && strcmp((*pdu)->name, optarg)) pdu++;
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if(*pdu) { pduType = *pdu; break; }
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fprintf(stderr, "-p %s: Unrecognized PDU\n", optarg);
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}
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#endif /* ASN_PDU_COLLECTION */
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fprintf(stderr, "-p %s: Unrecognized option\n", optarg);
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exit(EX_UNAVAILABLE);
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case 's':
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opt_stack = atoi(optarg);
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if(opt_stack < 0) {
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fprintf(stderr,
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"-s %s: Non-negative value expected\n",
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optarg);
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exit(EX_UNAVAILABLE);
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}
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break;
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case 'h':
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default:
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fprintf(stderr, "Usage: %s [options] <data.ber> ...\n", av[0]);
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fprintf(stderr, "Where options are:\n");
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if(pduType->uper_decoder)
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fprintf(stderr,
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" -iper Input is in Unaligned PER (Packed Encoding Rules) (DEFAULT)\n");
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fprintf(stderr,
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" -iber Input is in BER (Basic Encoding Rules)%s\n",
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iform == INP_PER ? "" : " (DEFAULT)");
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fprintf(stderr,
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" -ixer Input is in XER (XML Encoding Rules)\n");
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if(pduType->uper_encoder)
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fprintf(stderr,
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" -oper Output in Unaligned PER (Packed Encoding Rules)\n");
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fprintf(stderr,
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" -oder Output in DER (Distinguished Encoding Rules)\n"
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" -oxer Output in XER (XML Encoding Rules) (DEFAULT)\n"
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" -otext Output in plain semi-structured text (dump)\n"
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" -onull Verify (decode) input, but do not output\n");
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if(pduType->uper_decoder)
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fprintf(stderr,
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" -per-padded Assume PER PDUs are byte-padded (-iper)\n");
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#ifdef ASN_PDU_COLLECTION
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fprintf(stderr,
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" -p <PDU> Specify PDU type to decode\n"
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" -p list List available PDUs\n");
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#endif /* ASN_PDU_COLLECTION */
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fprintf(stderr,
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" -1 Decode only the first PDU in file\n"
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" -b <size> Set the i/o buffer size (default is %ld)\n"
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" -c Check ASN.1 constraints after decoding\n"
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" -d Enable debugging (-dd is even better)\n"
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" -n <num> Process files <num> times\n"
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" -s <size> Set the stack usage limit (default is %d)\n"
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, (long)suggested_bufsize, _ASN_DEFAULT_STACK_MAX);
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exit(EX_USAGE);
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}
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ac -= optind;
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av += optind;
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if(ac < 1) {
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fprintf(stderr, "%s: No input files specified. "
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"Try '-h' for more information\n",
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av[-optind]);
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exit(EX_USAGE);
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}
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setvbuf(stdout, 0, _IOLBF, 0);
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for(num = 0; num < number_of_iterations; num++) {
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int ac_i;
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/*
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* Process all files in turn.
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*/
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for(ac_i = 0; ac_i < ac; ac_i++) {
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asn_enc_rval_t erv;
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void *structure; /* Decoded structure */
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FILE *file = argument_to_file(av, ac_i);
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char *name = argument_to_name(av, ac_i);
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int first_pdu;
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for(first_pdu = 1; first_pdu || !opt_onepdu; first_pdu = 0) {
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/*
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* Decode the encoded structure from file.
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*/
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structure = data_decode_from_file(pduType,
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file, name, suggested_bufsize, first_pdu);
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if(!structure) {
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if(errno) {
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/* Error message is already printed */
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exit(EX_DATAERR);
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} else {
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/* EOF */
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break;
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}
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}
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/* Check ASN.1 constraints */
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if(opt_check) {
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char errbuf[128];
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size_t errlen = sizeof(errbuf);
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if(asn_check_constraints(pduType, structure,
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errbuf, &errlen)) {
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fprintf(stderr, "%s: ASN.1 constraint "
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"check failed: %s\n", name, errbuf);
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exit(EX_DATAERR);
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}
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}
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switch(oform) {
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case OUT_NULL:
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fprintf(stderr, "%s: decoded successfully\n", name);
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break;
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case OUT_TEXT: /* -otext */
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asn_fprint(stdout, pduType, structure);
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break;
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case OUT_XER: /* -oxer */
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if(xer_fprint(stdout, pduType, structure)) {
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fprintf(stderr,
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"%s: Cannot convert %s into XML\n",
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name, pduType->name);
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exit(EX_UNAVAILABLE);
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}
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break;
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case OUT_DER:
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erv = der_encode(pduType, structure, write_out, stdout);
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if(erv.encoded < 0) {
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fprintf(stderr,
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"%s: Cannot convert %s into DER\n",
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name, pduType->name);
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exit(EX_UNAVAILABLE);
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}
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DEBUG("Encoded in %ld bytes of DER", (long)erv.encoded);
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break;
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case OUT_PER:
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erv = uper_encode(pduType, structure, write_out, stdout);
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if(erv.encoded < 0) {
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fprintf(stderr,
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"%s: Cannot convert %s into Unaligned PER\n",
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name, pduType->name);
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exit(EX_UNAVAILABLE);
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}
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DEBUG("Encoded in %ld bits of UPER", (long)erv.encoded);
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break;
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}
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ASN_STRUCT_FREE(*pduType, structure);
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}
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if(file && file != stdin)
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fclose(file);
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}
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}
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return 0;
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}
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static struct dynamic_buffer {
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uint8_t *data; /* Pointer to the data bytes */
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size_t offset; /* Offset from the start */
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size_t length; /* Length of meaningful contents */
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size_t unbits; /* Unused bits in the last byte */
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size_t allocated; /* Allocated memory for data */
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int nreallocs; /* Number of data reallocations */
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off_t bytes_shifted; /* Number of bytes ever shifted */
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} DynamicBuffer;
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static void
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buffer_dump() {
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uint8_t *p = DynamicBuffer.data + DynamicBuffer.offset;
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uint8_t *e = p + DynamicBuffer.length - (DynamicBuffer.unbits ? 1 : 0);
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if(!opt_debug) return;
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DEBUG("Buffer: { d=%p, o=%ld, l=%ld, u=%ld, a=%ld, s=%ld }",
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DynamicBuffer.data,
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(long)DynamicBuffer.offset,
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(long)DynamicBuffer.length,
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(long)DynamicBuffer.unbits,
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(long)DynamicBuffer.allocated,
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(long)DynamicBuffer.bytes_shifted);
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for(; p < e; p++) {
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fprintf(stderr, " %c%c%c%c%c%c%c%c",
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((*p >> 7) & 1) ? '1' : '0',
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((*p >> 6) & 1) ? '1' : '0',
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((*p >> 5) & 1) ? '1' : '0',
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((*p >> 4) & 1) ? '1' : '0',
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((*p >> 3) & 1) ? '1' : '0',
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((*p >> 2) & 1) ? '1' : '0',
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((*p >> 1) & 1) ? '1' : '0',
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((*p >> 0) & 1) ? '1' : '0');
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}
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if(DynamicBuffer.unbits) {
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int shift;
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fprintf(stderr, " ");
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for(shift = 7; shift >= DynamicBuffer.unbits; shift--)
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fprintf(stderr, "%c", ((*p >> shift) & 1) ? '1' : '0');
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fprintf(stderr, " %d:%d\n",
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DynamicBuffer.length - 1, 8 - DynamicBuffer.unbits);
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} else {
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fprintf(stderr, " %d\n", DynamicBuffer.length);
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}
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}
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/*
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* Move the buffer content left N bits, possibly joining it with
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* preceeding content.
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*/
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static void
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buffer_shift_left(size_t offset, int bits) {
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uint8_t *ptr = DynamicBuffer.data + DynamicBuffer.offset + offset;
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uint8_t *end = DynamicBuffer.data + DynamicBuffer.offset
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+ DynamicBuffer.length - 1;
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if(!bits) return;
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DEBUG("Shifting left %d bits off %ld (o=%ld, u=%ld, l=%ld)",
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bits, (long)offset,
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(long)DynamicBuffer.offset,
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(long)DynamicBuffer.unbits,
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(long)DynamicBuffer.length);
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if(offset) {
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int right;
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right = ptr[0] >> (8 - bits);
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DEBUG("oleft: %c%c%c%c%c%c%c%c",
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((ptr[-1] >> 7) & 1) ? '1' : '0',
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((ptr[-1] >> 6) & 1) ? '1' : '0',
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((ptr[-1] >> 5) & 1) ? '1' : '0',
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((ptr[-1] >> 4) & 1) ? '1' : '0',
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((ptr[-1] >> 3) & 1) ? '1' : '0',
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((ptr[-1] >> 2) & 1) ? '1' : '0',
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((ptr[-1] >> 1) & 1) ? '1' : '0',
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((ptr[-1] >> 0) & 1) ? '1' : '0');
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DEBUG("oriht: %c%c%c%c%c%c%c%c",
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((ptr[0] >> 7) & 1) ? '1' : '0',
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((ptr[0] >> 6) & 1) ? '1' : '0',
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((ptr[0] >> 5) & 1) ? '1' : '0',
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((ptr[0] >> 4) & 1) ? '1' : '0',
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((ptr[0] >> 3) & 1) ? '1' : '0',
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((ptr[0] >> 2) & 1) ? '1' : '0',
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((ptr[0] >> 1) & 1) ? '1' : '0',
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((ptr[0] >> 0) & 1) ? '1' : '0');
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|
||||
DEBUG("mriht: %c%c%c%c%c%c%c%c",
|
||||
((right >> 7) & 1) ? '1' : '0',
|
||||
((right >> 6) & 1) ? '1' : '0',
|
||||
((right >> 5) & 1) ? '1' : '0',
|
||||
((right >> 4) & 1) ? '1' : '0',
|
||||
((right >> 3) & 1) ? '1' : '0',
|
||||
((right >> 2) & 1) ? '1' : '0',
|
||||
((right >> 1) & 1) ? '1' : '0',
|
||||
((right >> 0) & 1) ? '1' : '0');
|
||||
|
||||
ptr[-1] = (ptr[-1] & (0xff << bits)) | right;
|
||||
|
||||
DEBUG("after: %c%c%c%c%c%c%c%c",
|
||||
((ptr[-1] >> 7) & 1) ? '1' : '0',
|
||||
((ptr[-1] >> 6) & 1) ? '1' : '0',
|
||||
((ptr[-1] >> 5) & 1) ? '1' : '0',
|
||||
((ptr[-1] >> 4) & 1) ? '1' : '0',
|
||||
((ptr[-1] >> 3) & 1) ? '1' : '0',
|
||||
((ptr[-1] >> 2) & 1) ? '1' : '0',
|
||||
((ptr[-1] >> 1) & 1) ? '1' : '0',
|
||||
((ptr[-1] >> 0) & 1) ? '1' : '0');
|
||||
}
|
||||
|
||||
buffer_dump();
|
||||
|
||||
for(; ptr < end; ptr++) {
|
||||
int right = ptr[1] >> (8 - bits);
|
||||
*ptr = (*ptr << bits) | right;
|
||||
}
|
||||
*ptr <<= bits;
|
||||
|
||||
DEBUG("Unbits [%d=>", (int)DynamicBuffer.unbits);
|
||||
if(DynamicBuffer.unbits == 0) {
|
||||
DynamicBuffer.unbits += bits;
|
||||
} else {
|
||||
DynamicBuffer.unbits += bits;
|
||||
if(DynamicBuffer.unbits > 7) {
|
||||
DynamicBuffer.unbits -= 8;
|
||||
DynamicBuffer.length--;
|
||||
DynamicBuffer.bytes_shifted++;
|
||||
}
|
||||
}
|
||||
DEBUG("Unbits =>%d]", (int)DynamicBuffer.unbits);
|
||||
|
||||
buffer_dump();
|
||||
|
||||
DEBUG("Shifted. Now (o=%ld, u=%ld l=%ld)",
|
||||
(long)DynamicBuffer.offset,
|
||||
(long)DynamicBuffer.unbits,
|
||||
(long)DynamicBuffer.length);
|
||||
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Ensure that the buffer contains at least this amount of free space.
|
||||
*/
|
||||
static void add_bytes_to_buffer(const void *data2add, size_t bytes) {
|
||||
|
||||
if(bytes == 0) return;
|
||||
|
||||
DEBUG("=> add_bytes(%ld) { o=%ld l=%ld u=%ld, s=%ld }",
|
||||
(long)bytes,
|
||||
(long)DynamicBuffer.offset,
|
||||
(long)DynamicBuffer.length,
|
||||
(long)DynamicBuffer.unbits,
|
||||
(long)DynamicBuffer.allocated);
|
||||
|
||||
if(DynamicBuffer.allocated
|
||||
>= (DynamicBuffer.offset + DynamicBuffer.length + bytes)) {
|
||||
DEBUG("\tNo buffer reallocation is necessary");
|
||||
} else if(bytes <= DynamicBuffer.offset) {
|
||||
DEBUG("\tContents shifted by %ld", DynamicBuffer.offset);
|
||||
|
||||
/* Shift the buffer contents */
|
||||
memmove(DynamicBuffer.data,
|
||||
DynamicBuffer.data + DynamicBuffer.offset,
|
||||
DynamicBuffer.length);
|
||||
DynamicBuffer.bytes_shifted += DynamicBuffer.offset;
|
||||
DynamicBuffer.offset = 0;
|
||||
} else {
|
||||
size_t newsize = (DynamicBuffer.allocated << 2) + bytes;
|
||||
void *p = MALLOC(newsize);
|
||||
if(!p) {
|
||||
perror("malloc()");
|
||||
exit(EX_OSERR);
|
||||
}
|
||||
memcpy(p,
|
||||
DynamicBuffer.data + DynamicBuffer.offset,
|
||||
DynamicBuffer.length);
|
||||
FREEMEM(DynamicBuffer.data);
|
||||
DynamicBuffer.data = (char *)p;
|
||||
DynamicBuffer.offset = 0;
|
||||
DynamicBuffer.allocated = newsize;
|
||||
DynamicBuffer.nreallocs++;
|
||||
DEBUG("\tBuffer reallocated to %ld (%d time)",
|
||||
newsize, DynamicBuffer.nreallocs);
|
||||
}
|
||||
|
||||
memcpy(DynamicBuffer.data
|
||||
+ DynamicBuffer.offset + DynamicBuffer.length,
|
||||
data2add, bytes);
|
||||
DynamicBuffer.length += bytes;
|
||||
if(DynamicBuffer.unbits) {
|
||||
int bits = DynamicBuffer.unbits;
|
||||
DynamicBuffer.unbits = 0;
|
||||
buffer_shift_left(DynamicBuffer.length - bytes, bits);
|
||||
}
|
||||
|
||||
DEBUG("<= add_bytes(%ld) { o=%ld l=%ld u=%ld, s=%ld }",
|
||||
(long)bytes,
|
||||
(long)DynamicBuffer.offset,
|
||||
(long)DynamicBuffer.length,
|
||||
(long)DynamicBuffer.unbits,
|
||||
(long)DynamicBuffer.allocated);
|
||||
}
|
||||
|
||||
static void *
|
||||
data_decode_from_file(asn_TYPE_descriptor_t *pduType, FILE *file, const char *name, ssize_t suggested_bufsize, int on_first_pdu) {
|
||||
static uint8_t *fbuf;
|
||||
static ssize_t fbuf_size;
|
||||
static asn_codec_ctx_t s_codec_ctx;
|
||||
asn_codec_ctx_t *opt_codec_ctx = 0;
|
||||
void *structure = 0;
|
||||
asn_dec_rval_t rval;
|
||||
size_t old_offset;
|
||||
size_t new_offset;
|
||||
int tolerate_eof;
|
||||
size_t rd;
|
||||
|
||||
if(!file) {
|
||||
fprintf(stderr, "%s: %s\n", name, strerror(errno));
|
||||
errno = EINVAL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if(opt_stack) {
|
||||
s_codec_ctx.max_stack_size = opt_stack;
|
||||
opt_codec_ctx = &s_codec_ctx;
|
||||
}
|
||||
|
||||
DEBUG("Processing %s", name);
|
||||
|
||||
/* prepare the file buffer */
|
||||
if(fbuf_size != suggested_bufsize) {
|
||||
fbuf = (char *)REALLOC(fbuf, suggested_bufsize);
|
||||
if(!fbuf) {
|
||||
perror("realloc()");
|
||||
exit(EX_OSERR);
|
||||
}
|
||||
fbuf_size = suggested_bufsize;
|
||||
}
|
||||
|
||||
if(on_first_pdu) {
|
||||
DynamicBuffer.offset = 0;
|
||||
DynamicBuffer.length = 0;
|
||||
DynamicBuffer.unbits = 0;
|
||||
DynamicBuffer.allocated = 0;
|
||||
DynamicBuffer.bytes_shifted = 0;
|
||||
DynamicBuffer.nreallocs = 0;
|
||||
}
|
||||
|
||||
old_offset = DynamicBuffer.bytes_shifted + DynamicBuffer.offset;
|
||||
|
||||
/* Pretend immediate EOF */
|
||||
rval.code = RC_WMORE;
|
||||
rval.consumed = 0;
|
||||
|
||||
for(tolerate_eof = 1; /* Allow EOF first time buffer is non-empty */
|
||||
(rd = fread(fbuf, 1, fbuf_size, file))
|
||||
|| feof(file) == 0
|
||||
|| (tolerate_eof && DynamicBuffer.length)
|
||||
;) {
|
||||
int ecbits = 0; /* Extra consumed bits in case of PER */
|
||||
char *i_bptr;
|
||||
size_t i_size;
|
||||
|
||||
/*
|
||||
* Copy the data over, or use the original buffer.
|
||||
*/
|
||||
if(DynamicBuffer.allocated) {
|
||||
/* Append new data into the existing dynamic buffer */
|
||||
add_bytes_to_buffer(fbuf, rd);
|
||||
i_bptr = DynamicBuffer.data + DynamicBuffer.offset;
|
||||
i_size = DynamicBuffer.length;
|
||||
} else {
|
||||
i_bptr = fbuf;
|
||||
i_size = rd;
|
||||
}
|
||||
|
||||
DEBUG("Decoding %ld bytes", (long)i_size);
|
||||
|
||||
switch(iform) {
|
||||
case INP_BER:
|
||||
rval = ber_decode(opt_codec_ctx, pduType,
|
||||
(void **)&structure, i_bptr, i_size);
|
||||
break;
|
||||
case INP_XER:
|
||||
rval = xer_decode(opt_codec_ctx, pduType,
|
||||
(void **)&structure, i_bptr, i_size);
|
||||
break;
|
||||
case INP_PER:
|
||||
rval = uper_decode(opt_codec_ctx, pduType,
|
||||
(void **)&structure, i_bptr, i_size, 0,
|
||||
DynamicBuffer.unbits);
|
||||
ecbits = rval.consumed % 8; /* Extra bits */
|
||||
rval.consumed /= 8; /* Convert to value in bytes! */
|
||||
/* Check if input is byte-padded at the end */
|
||||
if(opt_ippad && ecbits && rval.code == RC_OK) {
|
||||
rval.consumed++;
|
||||
ecbits = 0;
|
||||
}
|
||||
break;
|
||||
}
|
||||
DEBUG("decode(%ld) consumed %ld+%db (%ld), code %d",
|
||||
(long)DynamicBuffer.length,
|
||||
(long)rval.consumed, ecbits, (long)i_size,
|
||||
rval.code);
|
||||
|
||||
if(DynamicBuffer.allocated == 0) {
|
||||
/*
|
||||
* Flush remainder into the intermediate buffer.
|
||||
*/
|
||||
if(rval.code != RC_FAIL && rval.consumed < rd) {
|
||||
add_bytes_to_buffer(fbuf + rval.consumed,
|
||||
rd - rval.consumed);
|
||||
buffer_shift_left(0, ecbits);
|
||||
DynamicBuffer.bytes_shifted = rval.consumed;
|
||||
rval.consumed = 0;
|
||||
ecbits = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Adjust position inside the source buffer.
|
||||
*/
|
||||
if(DynamicBuffer.allocated) {
|
||||
DynamicBuffer.offset += rval.consumed;
|
||||
DynamicBuffer.length -= rval.consumed;
|
||||
} else {
|
||||
DynamicBuffer.bytes_shifted += rval.consumed;
|
||||
}
|
||||
|
||||
switch(rval.code) {
|
||||
case RC_OK:
|
||||
if(ecbits) buffer_shift_left(0, ecbits);
|
||||
DEBUG("RC_OK, finishing up with %ld+%d",
|
||||
(long)rval.consumed, ecbits);
|
||||
return structure;
|
||||
case RC_WMORE:
|
||||
DEBUG("RC_WMORE, continuing read=%ld, cons=%ld "
|
||||
" with %ld..%ld-%ld..%ld",
|
||||
(long)rd,
|
||||
(long)rval.consumed,
|
||||
(long)DynamicBuffer.offset,
|
||||
(long)DynamicBuffer.length,
|
||||
(long)DynamicBuffer.unbits,
|
||||
(long)DynamicBuffer.allocated);
|
||||
if(!rd) tolerate_eof--;
|
||||
continue;
|
||||
case RC_FAIL:
|
||||
break;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
/* Clean up partially decoded structure */
|
||||
ASN_STRUCT_FREE(*pduType, structure);
|
||||
|
||||
new_offset = DynamicBuffer.bytes_shifted + DynamicBuffer.offset;
|
||||
|
||||
/*
|
||||
* Print a message and return failure only if not EOF,
|
||||
* unless this is our first PDU (empty file).
|
||||
*/
|
||||
if(on_first_pdu
|
||||
|| DynamicBuffer.length
|
||||
|| new_offset - old_offset > ((iform == INP_XER)?sizeof("\r\n")-1:0)
|
||||
) {
|
||||
DEBUG("ofp %d, no=%ld, oo=%ld, dbl=%ld",
|
||||
on_first_pdu, (long)new_offset, (long)old_offset,
|
||||
(long)DynamicBuffer.length);
|
||||
fprintf(stderr, "%s: "
|
||||
"Decode failed past byte %ld: %s\n",
|
||||
name, (long)new_offset,
|
||||
(rval.code == RC_WMORE)
|
||||
? "Unexpected end of input"
|
||||
: "Input processing error");
|
||||
#ifndef ENOMSG
|
||||
#define ENOMSG EINVAL
|
||||
#endif
|
||||
#ifndef EBADMSG
|
||||
#define EBADMSG EINVAL
|
||||
#endif
|
||||
errno = (rval.code == RC_WMORE) ? ENOMSG : EBADMSG;
|
||||
} else {
|
||||
/* Got EOF after a few successful PDUs */
|
||||
errno = 0;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Dump the buffer out to the specified FILE */
|
||||
static int write_out(const void *buffer, size_t size, void *key) {
|
||||
FILE *fp = (FILE *)key;
|
||||
return (fwrite(buffer, 1, size, fp) == size) ? 0 : -1;
|
||||
}
|
||||
|
||||
static int argument_is_stdin(char *av[], int idx) {
|
||||
if(strcmp(av[idx], "-")) {
|
||||
return 0; /* Certainly not <stdin> */
|
||||
} else {
|
||||
/* This might be <stdin>, unless `./program -- -` */
|
||||
if(strcmp(av[-1], "--"))
|
||||
return 1;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
static FILE *argument_to_file(char *av[], int idx) {
|
||||
return argument_is_stdin(av, idx)
|
||||
? stdin
|
||||
: fopen(av[idx], "r");
|
||||
}
|
||||
|
||||
static char *argument_to_name(char *av[], int idx) {
|
||||
return argument_is_stdin(av, idx)
|
||||
? "standard input"
|
||||
: av[idx];
|
||||
}
|
Loading…
Reference in New Issue