X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=RSM%2Fasn1codec%2Fe2ap_engine%2Fconverter-example.c;fp=RSM%2Fasn1codec%2Fe2ap_engine%2Fconverter-example.c;h=0000000000000000000000000000000000000000;hb=5df0dc958b3df1759f01372f11c4eae29854562f;hp=8dcb274e6b3f6621ccebe01c6e431ee3a63000ec;hpb=759122fd30e7ee7e83d84967f162d59a79818fc5;p=ric-plt%2Fresource-status-manager.git diff --git a/RSM/asn1codec/e2ap_engine/converter-example.c b/RSM/asn1codec/e2ap_engine/converter-example.c deleted file mode 100644 index 8dcb274..0000000 --- a/RSM/asn1codec/e2ap_engine/converter-example.c +++ /dev/null @@ -1,1033 +0,0 @@ - -/* - * Generic converter template for a selected ASN.1 type. - * Copyright (c) 2005-2017 Lev Walkin . - * 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 -#endif -#define __EXTENSIONS__ -#include -#include -#include /* for atoi(3) */ -#include /* for getopt(3) */ -#include /* for strerror(3) */ -#include /* for EX_* exit codes */ -#include /* for errno */ -#include /* for isatty(3) */ -#include -#include /* 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 */ -#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: '%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: '%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] ...\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 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 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 Process files times\n" - " -s Set the stack usage limit (default is %d)\n" -#ifdef JUNKTEST - " -J Set random junk test bit garbaging probability\n" - " -R 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 ' 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 = ""; - 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 */ - } else { - /* This might be , 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 */ -