+++ /dev/null
-
-/*
- * Generic converter template for a selected ASN.1 type.
- * Copyright (c) 2005-2017 Lev Walkin <vlm@lionet.info>.
- * All rights reserved.
- *
- * To compile with your own ASN.1 type, redefine the PDU as shown:
- *
- * cc -DPDU=MyCustomType -o myDecoder.o -c converter-example.c
- */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#define __EXTENSIONS__
-#include <stdio.h>
-#include <sys/types.h>
-#include <stdlib.h> /* for atoi(3) */
-#include <getopt.h> /* for getopt(3) */
-#include <string.h> /* for strerror(3) */
-#include <sysexits.h> /* for EX_* exit codes */
-#include <errno.h> /* for errno */
-#include <unistd.h> /* for isatty(3) */
-#include <asn_application.h>
-#include <asn_internal.h> /* for ASN__DEFAULT_STACK_MAX */
-
-/* Convert "Type" defined by -DPDU into "asn_DEF_Type" */
-#ifdef PDU
-#define ASN_DEF_PDU(t) asn_DEF_ ## t
-#define DEF_PDU_Type(t) ASN_DEF_PDU(t)
-#define PDU_Type DEF_PDU_Type(PDU)
-extern asn_TYPE_descriptor_t PDU_Type; /* ASN.1 type to be decoded */
-#define PDU_Type_Ptr (&PDU_Type)
-#else /* !PDU */
-#define PDU_Type_Ptr NULL
-#endif /* PDU */
-
-#ifdef ASN_PDU_COLLECTION /* Generated by asn1c -pdu=... */
-extern asn_TYPE_descriptor_t *asn_pdu_collection[];
-#endif
-
-#ifndef NO_ASN_PDU
-#if !defined(PDU) && !defined(ASN_PDU_COLLECTION)
-#error Define -DPDU to compile this example converter.
-#error `asn1c -pdu=...` adds necessary flags automatically.
-#endif
-#endif
-
-/*
- * Open file and parse its contens.
- */
-static void *data_decode_from_file(enum asn_transfer_syntax,
- asn_TYPE_descriptor_t *asnTypeOfPDU,
- FILE *file, const char *name,
- ssize_t suggested_bufsize, int first_pdu);
-static int write_out(const void *buffer, size_t size, void *key);
-static FILE *argument_to_file(char *av[], int idx);
-static char *argument_to_name(char *av[], int idx);
-
- int opt_debug; /* -d (or -dd) */
-static int opt_check; /* -c (constraints checking) */
-static int opt_stack; /* -s (maximum stack size) */
-static int opt_nopad; /* -per-nopad (PER input is not padded between msgs) */
-static int opt_onepdu; /* -1 (decode single PDU) */
-
-#ifdef JUNKTEST /* Enable -J <probability> */
-#define JUNKOPT "J:"
-static double opt_jprob; /* Junk bit probability */
-static int junk_failures;
-static void junk_bytes_with_probability(uint8_t *, size_t, double prob);
-
-#define RANDOPT "R:"
-static ssize_t random_max_size = 0; /* Size of the random data */
-
-#if !defined(__FreeBSD__) && !(defined(__APPLE__) && defined(__MACH__))
-static void
-srandomdev(void) {
- FILE *f = fopen("/dev/urandom", "rb");
- unsigned seed;
- if(f) {
- if(fread(&seed, 1, sizeof(seed), f) != sizeof(seed)) {
- seed = time(NULL);
- }
- fclose(f);
- } else {
- seed = time(NULL);
- }
- srandom(seed);
-}
-#endif
-
-#else /* !JUNKTEST */
-#define JUNKOPT
-#define RANDOPT
-#endif /* JUNKTEST */
-
-/* Debug output function */
-static void CC_PRINTFLIKE(1, 2)
-DEBUG(const char *fmt, ...) {
- va_list ap;
- if(!opt_debug) return;
- fprintf(stderr, "AD: ");
- va_start(ap, fmt);
- vfprintf(stderr, fmt, ap);
- va_end(ap);
- fprintf(stderr, "\n");
-}
-
-static const char *
-ats_simple_name(enum asn_transfer_syntax syntax) {
- switch(syntax) {
- case ATS_INVALID:
- return "/dev/null";
- case ATS_NONSTANDARD_PLAINTEXT:
- return "plaintext";
- case ATS_BER:
- return "BER";
- case ATS_DER:
- return "DER";
- case ATS_CER:
- return "CER";
- case ATS_BASIC_OER:
- case ATS_CANONICAL_OER:
- return "OER";
- case ATS_BASIC_XER:
- case ATS_CANONICAL_XER:
- return "XER";
- case ATS_UNALIGNED_BASIC_PER:
- case ATS_UNALIGNED_CANONICAL_PER:
- return "PER";
- default:
- return "<?>";
- }
-}
-
-#define CODEC_OFFSET(fname) ((ptrdiff_t)&(((asn_TYPE_operation_t *)0)->fname))
-typedef struct {
- const char *name;
- enum asn_transfer_syntax syntax;
- ptrdiff_t codec_offset;
- const char *full_name;
-} syntax_selector;
-
-static syntax_selector input_encodings[] = {
- {"ber", ATS_BER, CODEC_OFFSET(ber_decoder),
- "Input is in BER (Basic Encoding Rules) or DER"},
- {"oer", ATS_BASIC_OER, CODEC_OFFSET(oer_decoder),
- "Input is in OER (Octet Encoding Rules)"},
- {"per", ATS_UNALIGNED_BASIC_PER, CODEC_OFFSET(uper_decoder),
- "Input is in Unaligned PER (Packed Encoding Rules)"},
- {"aper", ATS_ALIGNED_BASIC_PER, CODEC_OFFSET(aper_decoder),
- "Input is in Aligned PER (Packed Encoding Rules)"},
- {"xer", ATS_BASIC_XER, CODEC_OFFSET(xer_decoder),
- "Input is in XER (XML Encoding Rules)"},
- {0, ATS_INVALID, 0, 0}};
-
-static syntax_selector output_encodings[] = {
- {"der", ATS_DER, CODEC_OFFSET(der_encoder),
- "Output as DER (Distinguished Encoding Rules)"},
- {"oer", ATS_CANONICAL_OER, CODEC_OFFSET(oer_encoder),
- "Output as Canonical OER (Octet Encoding Rules)"},
- {"per", ATS_UNALIGNED_CANONICAL_PER, CODEC_OFFSET(uper_encoder),
- "Output as Unaligned PER (Packed Encoding Rules)"},
- {"aper", ATS_ALIGNED_CANONICAL_PER, CODEC_OFFSET(aper_encoder),
- "Output as Aligned PER (Packed Encoding Rules)"},
- {"xer", ATS_BASIC_XER, CODEC_OFFSET(xer_encoder),
- "Output as XER (XML Encoding Rules)"},
- {"text", ATS_NONSTANDARD_PLAINTEXT, CODEC_OFFSET(print_struct),
- "Output as plain semi-structured text"},
- {"null", ATS_INVALID, CODEC_OFFSET(print_struct),
- "Verify (decode) input, but do not output"},
- {0, ATS_INVALID, 0, 0}};
-
-static int
-has_codec_defined(const asn_TYPE_descriptor_t *td,
- const syntax_selector *element) {
- return *(const void *const *)(const void *)((const char *)td->op
- + element->codec_offset) != 0;
-}
-
-/*
- * Select ASN.1 Transfer Enocoding Syntax by command line name.
- */
-static const syntax_selector *
-ats_by_name(const char *name, const asn_TYPE_descriptor_t *td,
- const syntax_selector *first_element) {
- const syntax_selector *element;
- for(element = first_element; element->name; element++) {
- if(strcmp(element->name, name) == 0) {
- if(td && td->op && has_codec_defined(td, element)) {
- return element;
- }
- }
- }
- return NULL;
-}
-
-int
-main(int ac, char *av[]) {
- FILE *binary_out;
- asn_TYPE_descriptor_t *pduType = PDU_Type_Ptr;
- asn_TYPE_descriptor_t *anyPduType = PDU_Type_Ptr;
- ssize_t suggested_bufsize = 8192; /* close or equal to stdio buffer */
- int number_of_iterations = 1;
- int num;
- int ch;
- const syntax_selector *sel;
- enum asn_transfer_syntax isyntax = ATS_INVALID;
- enum asn_transfer_syntax osyntax = ATS_BASIC_XER;
-
- if(!anyPduType) {
-#ifdef ASN_PDU_COLLECTION
- anyPduType = asn_pdu_collection[0];
- if(!anyPduType) {
- fprintf(stderr,
- "Empty PDU collection, no reference PDU to choose from.\n");
- exit(EX_SOFTWARE);
- }
-#else
- fprintf(stderr, "Either asn1c -pdu=... or cc -DPDU should be used.\n");
- exit(EX_SOFTWARE);
-#endif
- }
-
- /* Figure out if a specialty decoder needs to be default */
-#ifndef ASN_DISABLE_OER_SUPPORT
- isyntax = ATS_BASIC_OER;
-#endif
-#ifndef ASN_DISABLE_PER_SUPPORT
- isyntax = ATS_UNALIGNED_BASIC_PER;
-#endif
-
- /*
- * Pocess the command-line argments.
- */
- while((ch = getopt(ac, av, "i:o:1b:cdn:p:hs:" JUNKOPT RANDOPT)) != -1)
- switch(ch) {
- case 'i':
- sel = ats_by_name(optarg, anyPduType, input_encodings);
- if(sel) {
- isyntax = sel->syntax;
- } else {
- fprintf(stderr, "-i<format>: '%s': improper format selector\n",
- optarg);
- exit(EX_UNAVAILABLE);
- }
- break;
- case 'o':
- sel = ats_by_name(optarg, anyPduType, output_encodings);
- if(sel) {
- osyntax = sel->syntax;
- } else {
- fprintf(stderr, "-o<format>: '%s': improper format selector\n",
- optarg);
- exit(EX_UNAVAILABLE);
- }
- break;
- case '1':
- opt_onepdu = 1;
- break;
- case 'b':
- suggested_bufsize = atoi(optarg);
- if(suggested_bufsize < 1
- || suggested_bufsize > 16 * 1024 * 1024) {
- fprintf(stderr,
- "-b %s: Improper buffer size (1..16M)\n",
- optarg);
- exit(EX_UNAVAILABLE);
- }
- break;
- case 'c':
- opt_check = 1;
- break;
- case 'd':
- opt_debug++; /* Double -dd means ASN.1 debug */
- break;
- case 'n':
- number_of_iterations = atoi(optarg);
- if(number_of_iterations < 1) {
- fprintf(stderr,
- "-n %s: Improper iterations count\n", optarg);
- exit(EX_UNAVAILABLE);
- }
- break;
- case 'p':
- if(strcmp(optarg, "er-nopad") == 0) {
- opt_nopad = 1;
- break;
- }
-#ifdef ASN_PDU_COLLECTION
- if(strcmp(optarg, "list") == 0) {
- asn_TYPE_descriptor_t **pdu = asn_pdu_collection;
- fprintf(stderr, "Available PDU types:\n");
- for(; *pdu; pdu++) printf("%s\n", (*pdu)->name);
- exit(0);
- } else if(optarg[0] >= 'A' && optarg[0] <= 'Z') {
- asn_TYPE_descriptor_t **pdu = asn_pdu_collection;
- while(*pdu && strcmp((*pdu)->name, optarg)) pdu++;
- if(*pdu) { pduType = *pdu; break; }
- fprintf(stderr, "-p %s: Unrecognized PDU. Try '-p list'.\n",
- optarg);
- exit(EX_USAGE);
- }
-#else /* Without -pdu=auto there's just a single type */
- if(strcmp(optarg, "list") == 0) {
- fprintf(stderr, "Available PDU types:\n");
- if(pduType) {
- printf("%s\n", pduType->name);
- }
- exit(0);
- } else if(optarg[0] >= 'A' && optarg[0] <= 'Z') {
- if(pduType && strcmp(optarg, pduType->name) == 0) {
- break;
- }
- fprintf(stderr, "-p %s: Unrecognized PDU. Try '-p list'.\n",
- optarg);
- exit(EX_USAGE);
- }
-#endif /* ASN_PDU_COLLECTION */
- fprintf(stderr, "-p %s: Unrecognized option\n", optarg);
- exit(EX_UNAVAILABLE);
- case 's':
- opt_stack = atoi(optarg);
- if(opt_stack < 0) {
- fprintf(stderr,
- "-s %s: Non-negative value expected\n",
- optarg);
- exit(EX_UNAVAILABLE);
- }
- break;
-#ifdef JUNKTEST
- case 'J':
- opt_jprob = strtod(optarg, 0);
- if(opt_jprob <= 0.0 || opt_jprob > 1.0) {
- fprintf(stderr,
- "-J %s: Probability range 0..1 expected \n",
- optarg);
- exit(EX_UNAVAILABLE);
- }
- break;
- case 'R':
- isyntax = ATS_RANDOM;
- random_max_size = atoi(optarg);
- if(random_max_size < 0) {
- fprintf(stderr,
- "-R %s: Non-negative value expected\n",
- optarg);
- exit(EX_UNAVAILABLE);
- }
- srandomdev();
- break;
-#endif /* JUNKTEST */
- case 'h':
- default:
-#ifdef ASN_CONVERTER_TITLE
-#define _AXS(x) #x
-#define _ASX(x) _AXS(x)
- fprintf(stderr, "%s\n", _ASX(ASN_CONVERTER_TITLE));
-#endif
- fprintf(stderr, "Usage: %s [options] <datafile> ...\n", av[0]);
- fprintf(stderr, "Where options are:\n");
- for(sel = input_encodings; sel->name; sel++) {
- if(ats_by_name(sel->name, anyPduType, sel)) {
- fprintf(stderr, " -i%s %s%s\n", sel->name,
- sel->full_name,
- (sel->syntax == isyntax) ? " (DEFAULT)" : "");
- }
- }
- for(sel = output_encodings; sel->name; sel++) {
- if(ats_by_name(sel->name, anyPduType, sel)) {
- fprintf(stderr, " -o%s%s %s%s\n", sel->name,
- strlen(sel->name) > 3 ? "" : " ",
- sel->full_name,
- (sel->syntax == osyntax) ? " (DEFAULT)" : "");
- }
- }
- if(anyPduType->op->uper_decoder) {
- fprintf(stderr,
- " -per-nopad Assume PER PDUs are not padded (-iper)\n");
- }
-#ifdef ASN_PDU_COLLECTION
- fprintf(stderr,
- " -p <PDU> Specify PDU type to decode\n"
- " -p list List available PDUs\n");
-#endif /* ASN_PDU_COLLECTION */
- fprintf(stderr,
- " -1 Decode only the first PDU in file\n"
- " -b <size> Set the i/o buffer size (default is %ld)\n"
- " -c Check ASN.1 constraints after decoding\n"
- " -d Enable debugging (-dd is even better)\n"
- " -n <num> Process files <num> times\n"
- " -s <size> Set the stack usage limit (default is %d)\n"
-#ifdef JUNKTEST
- " -J <prob> Set random junk test bit garbaging probability\n"
- " -R <size> Generate a random value of roughly the given size,\n"
- " instead of parsing the value from file.\n"
-#endif
- , (long)suggested_bufsize, ASN__DEFAULT_STACK_MAX);
- exit(EX_USAGE);
- }
-
- ac -= optind;
- av += optind;
-
- if(!pduType) {
-#ifdef NO_ASN_PDU
- fprintf(stderr, "No -DPDU defined during compilation.\n");
- exit(0);
-#else
- fprintf(stderr, "Use '-p <Type>' or '-p list' to select ASN.1 type.\n");
- exit(EX_USAGE);
-#endif /* NO_ASN_PDU */
- }
-
- if(ac < 1 && isyntax != ATS_RANDOM) {
- fprintf(stderr, "%s: No input files specified. "
- "Try '-h' for more information\n",
- av[-optind]);
- exit(EX_USAGE);
- }
-
- if(isatty(1)) {
- const int is_text_output = osyntax == ATS_NONSTANDARD_PLAINTEXT
- || osyntax == ATS_BASIC_XER
- || osyntax == ATS_CANONICAL_XER;
- if(is_text_output) {
- binary_out = stdout;
- } else {
- fprintf(stderr, "(Suppressing binary output to a terminal.)\n");
- binary_out = fopen("/dev/null", "wb");
- if(!binary_out) {
- fprintf(stderr, "Can't open /dev/null: %s\n", strerror(errno));
- exit(EX_OSERR);
- }
- }
- } else {
- binary_out = stdout;
- }
- setvbuf(stdout, 0, _IOLBF, 0);
-
- for(num = 0; num < number_of_iterations; num++) {
- int ac_i;
- /*
- * Process all files in turn.
- */
- for(ac_i = (isyntax == ATS_RANDOM) ? -1 : 0; ac_i < ac; ac_i++) {
- asn_enc_rval_t erv = {0,0,0};
- void *structure; /* Decoded structure */
- FILE *file;
- char *name;
- int first_pdu;
-
- if(ac_i == -1) {
- file = NULL;
- name = "<random value generator>";
- opt_onepdu = 1;
- } else {
- file = argument_to_file(av, ac_i);
- name = argument_to_name(av, ac_i);
- }
-
- for(first_pdu = 1; (first_pdu || !opt_onepdu); first_pdu = 0) {
- /*
- * Decode the encoded structure from file.
- */
-#ifdef JUNKTEST
- if(isyntax == ATS_RANDOM) {
- structure = NULL;
- if(asn_random_fill(pduType, &structure, random_max_size) != 0) {
- fprintf(stderr, "Cannot generate a random value.\n");
- assert(structure == NULL);
- errno = EINVAL;
- }
- } else {
-#endif
- structure = data_decode_from_file(isyntax, pduType, file, name,
- suggested_bufsize, first_pdu);
-#ifdef JUNKTEST
- }
-#endif
- if(!structure) {
- if(errno) {
- /* Error message is already printed */
- exit(EX_DATAERR);
- } else {
- /* EOF */
- break;
- }
- }
-
- /* Check ASN.1 constraints */
- if(opt_check) {
- char errbuf[128];
- size_t errlen = sizeof(errbuf);
- if(asn_check_constraints(pduType, structure, errbuf, &errlen)) {
- fprintf(stderr,
- "%s: ASN.1 constraint "
- "check failed: %s\n",
- name, errbuf);
- exit(EX_DATAERR);
- }
- }
-
- if(osyntax == ATS_INVALID) {
-#ifdef JUNKTEST
- if(opt_jprob == 0.0) {
- fprintf(stderr, "%s: decoded successfully\n", name);
- }
-#else
- fprintf(stderr, "%s: decoded successfully\n", name);
-#endif
- } else {
- erv = asn_encode(NULL, osyntax, pduType, structure, write_out,
- binary_out);
-
- if(erv.encoded == -1) {
- fprintf(stderr, "%s: Cannot convert %s into %s\n", name,
- pduType->name, ats_simple_name(osyntax));
- DEBUG("Conversion failed for %s:\n", pduType->name);
- asn_fprint(stderr, pduType, structure);
- exit(EX_UNAVAILABLE);
- }
- DEBUG("Encoded in %" ASN_PRI_SSIZE " bytes of %s", erv.encoded,
- ats_simple_name(osyntax));
- }
-
- ASN_STRUCT_FREE(*pduType, structure);
- }
-
- if(file && file != stdin) {
- fclose(file);
- }
- }
- }
-
-#ifdef JUNKTEST
- if(opt_jprob > 0.0) {
- fprintf(stderr, "Junked %f OK (%d/%d)\n",
- opt_jprob, junk_failures, number_of_iterations);
- }
-#endif /* JUNKTEST */
-
- return 0;
-}
-
-static struct dynamic_buffer {
- uint8_t *data; /* Pointer to the data bytes */
- size_t offset; /* Offset from the start */
- size_t length; /* Length of meaningful contents */
- size_t unbits; /* Unused bits in the last byte */
- size_t allocated; /* Allocated memory for data */
- int nreallocs; /* Number of data reallocations */
- off_t bytes_shifted; /* Number of bytes ever shifted */
-} DynamicBuffer;
-
-static void
-buffer_dump() {
- uint8_t *p = DynamicBuffer.data + DynamicBuffer.offset;
- uint8_t *e = p + DynamicBuffer.length - (DynamicBuffer.unbits ? 1 : 0);
- if(!opt_debug) return;
- DEBUG("Buffer: { d=%p, o=%" ASN_PRI_SIZE ", l=%" ASN_PRI_SIZE
- ", u=%" ASN_PRI_SIZE ", a=%" ASN_PRI_SIZE ", s=%" ASN_PRI_SIZE " }",
- (const void *)DynamicBuffer.data,
- DynamicBuffer.offset,
- DynamicBuffer.length,
- DynamicBuffer.unbits,
- DynamicBuffer.allocated,
- (size_t)DynamicBuffer.bytes_shifted);
- for(; p < e; p++) {
- fprintf(stderr, " %c%c%c%c%c%c%c%c",
- ((*p >> 7) & 1) ? '1' : '0',
- ((*p >> 6) & 1) ? '1' : '0',
- ((*p >> 5) & 1) ? '1' : '0',
- ((*p >> 4) & 1) ? '1' : '0',
- ((*p >> 3) & 1) ? '1' : '0',
- ((*p >> 2) & 1) ? '1' : '0',
- ((*p >> 1) & 1) ? '1' : '0',
- ((*p >> 0) & 1) ? '1' : '0');
- }
- if(DynamicBuffer.unbits) {
- unsigned int shift;
- fprintf(stderr, " ");
- for(shift = 7; shift >= DynamicBuffer.unbits; shift--)
- fprintf(stderr, "%c", ((*p >> shift) & 1) ? '1' : '0');
- fprintf(stderr, " %" ASN_PRI_SSIZE ":%" ASN_PRI_SSIZE "\n",
- (ssize_t)DynamicBuffer.length - 1,
- (ssize_t)8 - DynamicBuffer.unbits);
- } else {
- fprintf(stderr, " %ld\n", (long)DynamicBuffer.length);
- }
-}
-
-/*
- * Move the buffer content left N bits, possibly joining it with
- * preceeding content.
- */
-static void
-buffer_shift_left(size_t offset, int bits) {
- uint8_t *ptr = DynamicBuffer.data + DynamicBuffer.offset + offset;
- uint8_t *end = DynamicBuffer.data + DynamicBuffer.offset
- + DynamicBuffer.length - 1;
-
- if(!bits) return;
-
- DEBUG("Shifting left %d bits off %ld (o=%ld, u=%ld, l=%ld)",
- bits, (long)offset,
- (long)DynamicBuffer.offset,
- (long)DynamicBuffer.unbits,
- (long)DynamicBuffer.length);
-
- if(offset) {
- int right;
- right = ptr[0] >> (8 - bits);
-
- DEBUG("oleft: %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');
-
- DEBUG("oriht: %c%c%c%c%c%c%c%c",
- ((ptr[0] >> 7) & 1) ? '1' : '0',
- ((ptr[0] >> 6) & 1) ? '1' : '0',
- ((ptr[0] >> 5) & 1) ? '1' : '0',
- ((ptr[0] >> 4) & 1) ? '1' : '0',
- ((ptr[0] >> 3) & 1) ? '1' : '0',
- ((ptr[0] >> 2) & 1) ? '1' : '0',
- ((ptr[0] >> 1) & 1) ? '1' : '0',
- ((ptr[0] >> 0) & 1) ? '1' : '0');
-
- 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 [%" ASN_PRI_SIZE "=>", 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 =>%" ASN_PRI_SIZE "]", DynamicBuffer.unbits);
-
- buffer_dump();
-
- DEBUG("Shifted. Now (o=%" ASN_PRI_SIZE ", u=%" ASN_PRI_SIZE
- " l=%" ASN_PRI_SIZE ")",
- DynamicBuffer.offset,
- DynamicBuffer.unbits,
- 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(%" ASN_PRI_SIZE ") { o=%" ASN_PRI_SIZE
- " l=%" ASN_PRI_SIZE " u=%" ASN_PRI_SIZE ", s=%" ASN_PRI_SIZE " }",
- bytes,
- DynamicBuffer.offset,
- DynamicBuffer.length,
- DynamicBuffer.unbits,
- 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);
- }
- if (DynamicBuffer.length) {
- memcpy(p,
- DynamicBuffer.data + DynamicBuffer.offset,
- DynamicBuffer.length);
- }
- FREEMEM(DynamicBuffer.data);
- DynamicBuffer.data = (uint8_t *)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(%" ASN_PRI_SIZE ") { o=%" ASN_PRI_SIZE
- " l=%" ASN_PRI_SIZE " u=%" ASN_PRI_SIZE ", s=%" ASN_PRI_SIZE " }",
- bytes,
- DynamicBuffer.offset,
- DynamicBuffer.length,
- DynamicBuffer.unbits,
- DynamicBuffer.allocated);
-}
-
-static int
-is_syntax_PER(enum asn_transfer_syntax syntax) {
- return (syntax == ATS_UNALIGNED_BASIC_PER
- || syntax == ATS_UNALIGNED_CANONICAL_PER
- || syntax == ATS_ALIGNED_BASIC_PER
- || syntax == ATS_ALIGNED_CANONICAL_PER);
-}
-
-static int
-restartability_supported(enum asn_transfer_syntax syntax) {
- return !is_syntax_PER(syntax);
-}
-
-static void *
-data_decode_from_file(enum asn_transfer_syntax isyntax, 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 = (uint8_t *)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 */
- uint8_t *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 %" ASN_PRI_SIZE " bytes", i_size);
-
-#ifdef JUNKTEST
- junk_bytes_with_probability(i_bptr, i_size, opt_jprob);
-#endif
-
- if(is_syntax_PER(isyntax) && opt_nopad) {
-#ifdef ASN_DISABLE_PER_SUPPORT
- rval.code = RC_FAIL;
- rval.consumed = 0;
-#else
- if(isyntax == ATS_UNALIGNED_BASIC_PER)
- rval = uper_decode(opt_codec_ctx, pduType, (void **)&structure,
- i_bptr, i_size, 0, DynamicBuffer.unbits);
- else
- rval = aper_decode(opt_codec_ctx, pduType, (void **)&structure,
- i_bptr, i_size, 0, DynamicBuffer.unbits);
- /* uper_decode() returns bits! */
- ecbits = rval.consumed % 8; /* Bits consumed from the last byte */
- rval.consumed >>= 3; /* Convert bits into bytes. */
-#endif
- /* Non-padded PER decoder */
- } else {
- rval = asn_decode(opt_codec_ctx, isyntax, pduType,
- (void **)&structure, i_bptr, i_size);
- }
- if(rval.code == RC_WMORE && !restartability_supported(isyntax)) {
- /* PER does not support restartability */
- ASN_STRUCT_FREE(*pduType, structure);
- structure = 0;
- rval.consumed = 0;
- /* Continue accumulating data */
- }
-
- DEBUG("decode(%" ASN_PRI_SIZE ") consumed %" ASN_PRI_SIZE
- "+%db (%" ASN_PRI_SIZE "), code %d",
- DynamicBuffer.length, rval.consumed, ecbits, 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;
- }
-
- DEBUG("Clean up partially decoded %s", pduType->name);
- 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 > ((isyntax == ATS_BASIC_XER)?sizeof("\r\n")-1:0)
- ) {
-
-#ifdef JUNKTEST
- /*
- * Nothing's wrong with being unable to decode junk.
- * Simulate EOF.
- */
- if(opt_jprob != 0.0) {
- junk_failures++;
- errno = 0;
- return 0;
- }
-#endif
-
- 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], "rb");
-}
-
-static char *argument_to_name(char *av[], int idx) {
- return argument_is_stdin(av, idx) ? "standard input" : av[idx];
-}
-
-#ifdef JUNKTEST
-/*
- * Fill bytes with some garbage with specified probability (more or less).
- */
-static void
-junk_bytes_with_probability(uint8_t *buf, size_t size, double prob) {
- static int junkmode;
- uint8_t *ptr;
- uint8_t *end;
- if(opt_jprob <= 0.0) return;
- for(ptr = buf, end = ptr + size; ptr < end; ptr++) {
- int byte = *ptr;
- if(junkmode++ & 1) {
- if((((double)random() / RAND_MAX) < prob))
- byte = random() & 0xff;
- } else {
-#define BPROB(b) ((((double)random() / RAND_MAX) < prob) ? b : 0)
- byte ^= BPROB(0x80);
- byte ^= BPROB(0x40);
- byte ^= BPROB(0x20);
- byte ^= BPROB(0x10);
- byte ^= BPROB(0x08);
- byte ^= BPROB(0x04);
- byte ^= BPROB(0x02);
- byte ^= BPROB(0x01);
- }
- if(byte != *ptr) {
- *ptr = byte;
- }
- }
-}
-#endif /* JUNKTEST */
-
Code Review / ric-plt / resource-status-manager.git / blobdiff