+++ /dev/null
-/*
- * Generic converter template for a selected ASN.1 type.
- * Copyright (c) 2005, 2006 Lev Walkin <vlm@lionet.info>. All rights reserved.
- *
- * To compile with your own ASN.1 type, please redefine the PDU as shown:
- *
- * cc -DPDU=MyCustomType -o myDecoder.o -c converter-sample.c
- */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <sys/types.h>
-#include <stdlib.h> /* for atoi(3) */
-#include <unistd.h> /* for getopt(3) */
-#include <string.h> /* for strerror(3) */
-#include <sysexits.h> /* for EX_* exit codes */
-#include <assert.h> /* for assert(3) */
-#include <errno.h> /* for errno */
-
-#include <asn_application.h>
-#include <asn_internal.h> /* for _ASN_DEFAULT_STACK_MAX */
-
-/* Convert "Type" defined by -DPDU into "asn_DEF_Type" */
-#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 */
-#ifdef ASN_PDU_COLLECTION /* Generated by asn1c: -pdu=... */
-extern asn_TYPE_descriptor_t *asn_pdu_collection[];
-#endif
-
-/*
- * Open file and parse its contens.
- */
-static void *data_decode_from_file(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_ippad; /* -per-padded (PER input is byte-padded) */
-static int opt_onepdu; /* -1 (decode single PDU) */
-
-/* Input data format selector */
-static enum input_format {
- INP_BER, /* -iber: BER input */
- INP_XER, /* -ixer: XER input */
- INP_PER /* -iper: Unaligned PER input */
-} iform; /* -i<format> */
-
-/* Output data format selector */
-static enum output_format {
- OUT_XER, /* -oxer: XER (XML) output */
- OUT_DER, /* -oder: DER (BER) output */
- OUT_PER, /* -oper: Unaligned PER output */
- OUT_TEXT, /* -otext: semi-structured text */
- OUT_NULL /* -onull: No pretty-printing */
-} oform; /* -o<format> */
-
-/* Debug output function */
-static inline void
-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");
-}
-
-int
-main(int ac, char *av[]) {
- static asn_TYPE_descriptor_t *pduType = &PDU_Type;
- ssize_t suggested_bufsize = 8192; /* close or equal to stdio buffer */
- int number_of_iterations = 1;
- int num;
- int ch;
-
- /* Figure out if Unaligned PER needs to be default */
- if(pduType->uper_decoder)
- iform = INP_PER;
-
- /*
- * Pocess the command-line argments.
- */
- while((ch = getopt(ac, av, "i:o:1b:cdn:p:hs:")) != -1)
- switch(ch) {
- case 'i':
- if(optarg[0] == 'b') { iform = INP_BER; break; }
- if(optarg[0] == 'x') { iform = INP_XER; break; }
- if(pduType->uper_decoder
- && optarg[0] == 'p') { iform = INP_PER; break; }
- fprintf(stderr, "-i<format>: '%s': improper format selector\n",
- optarg);
- exit(EX_UNAVAILABLE);
- case 'o':
- if(optarg[0] == 'd') { oform = OUT_DER; break; }
- if(pduType->uper_encoder
- && optarg[0] == 'p') { oform = OUT_PER; break; }
- if(optarg[0] == 'x') { oform = OUT_XER; break; }
- if(optarg[0] == 't') { oform = OUT_TEXT; break; }
- if(optarg[0] == 'n') { oform = OUT_NULL; break; }
- fprintf(stderr, "-o<format>: '%s': improper format selector\n",
- optarg);
- exit(EX_UNAVAILABLE);
- 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-padded") == 0) {
- opt_ippad = 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\n", optarg);
- }
-#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;
- case 'h':
- default:
- fprintf(stderr, "Usage: %s [options] <data.ber> ...\n", av[0]);
- fprintf(stderr, "Where options are:\n");
- if(pduType->uper_decoder)
- fprintf(stderr,
- " -iper Input is in Unaligned PER (Packed Encoding Rules) (DEFAULT)\n");
- fprintf(stderr,
- " -iber Input is in BER (Basic Encoding Rules)%s\n",
- iform == INP_PER ? "" : " (DEFAULT)");
- fprintf(stderr,
- " -ixer Input is in XER (XML Encoding Rules)\n");
- if(pduType->uper_encoder)
- fprintf(stderr,
- " -oper Output in Unaligned PER (Packed Encoding Rules)\n");
- fprintf(stderr,
- " -oder Output in DER (Distinguished Encoding Rules)\n"
- " -oxer Output in XER (XML Encoding Rules) (DEFAULT)\n"
- " -otext Output in plain semi-structured text (dump)\n"
- " -onull Verify (decode) input, but do not output\n");
- if(pduType->uper_decoder)
- fprintf(stderr,
- " -per-padded Assume PER PDUs are byte-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"
- , (long)suggested_bufsize, _ASN_DEFAULT_STACK_MAX);
- exit(EX_USAGE);
- }
-
- ac -= optind;
- av += optind;
-
- if(ac < 1) {
- fprintf(stderr, "%s: No input files specified. "
- "Try '-h' for more information\n",
- av[-optind]);
- exit(EX_USAGE);
- }
-
- setvbuf(stdout, 0, _IOLBF, 0);
-
- for(num = 0; num < number_of_iterations; num++) {
- int ac_i;
- /*
- * Process all files in turn.
- */
- for(ac_i = 0; ac_i < ac; ac_i++) {
- asn_enc_rval_t erv;
- void *structure; /* Decoded structure */
- FILE *file = argument_to_file(av, ac_i);
- char *name = argument_to_name(av, ac_i);
- int first_pdu;
-
- for(first_pdu = 1; first_pdu || !opt_onepdu; first_pdu = 0) {
- /*
- * Decode the encoded structure from file.
- */
- structure = data_decode_from_file(pduType,
- file, name, suggested_bufsize, first_pdu);
- 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);
- }
- }
-
- switch(oform) {
- case OUT_NULL:
- fprintf(stderr, "%s: decoded successfully\n", name);
- break;
- case OUT_TEXT: /* -otext */
- asn_fprint(stdout, pduType, structure);
- break;
- case OUT_XER: /* -oxer */
- if(xer_fprint(stdout, pduType, structure)) {
- fprintf(stderr,
- "%s: Cannot convert %s into XML\n",
- name, pduType->name);
- exit(EX_UNAVAILABLE);
- }
- break;
- case OUT_DER:
- erv = der_encode(pduType, structure, write_out, stdout);
- if(erv.encoded < 0) {
- fprintf(stderr,
- "%s: Cannot convert %s into DER\n",
- name, pduType->name);
- exit(EX_UNAVAILABLE);
- }
- DEBUG("Encoded in %ld bytes of DER", (long)erv.encoded);
- break;
- case OUT_PER:
- erv = uper_encode(pduType, structure, write_out, stdout);
- if(erv.encoded < 0) {
- fprintf(stderr,
- "%s: Cannot convert %s into Unaligned PER\n",
- name, pduType->name);
- exit(EX_UNAVAILABLE);
- }
- DEBUG("Encoded in %ld bits of UPER", (long)erv.encoded);
- break;
- }
-
- ASN_STRUCT_FREE(*pduType, structure);
- }
-
- if(file && file != stdin)
- fclose(file);
- }
- }
-
- 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=%ld, l=%ld, u=%ld, a=%ld, s=%ld }",
- DynamicBuffer.data,
- (long)DynamicBuffer.offset,
- (long)DynamicBuffer.length,
- (long)DynamicBuffer.unbits,
- (long)DynamicBuffer.allocated,
- (long)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) {
- int shift;
- fprintf(stderr, " ");
- for(shift = 7; shift >= DynamicBuffer.unbits; shift--)
- fprintf(stderr, "%c", ((*p >> shift) & 1) ? '1' : '0');
- fprintf(stderr, " %d:%d\n",
- DynamicBuffer.length - 1, 8 - DynamicBuffer.unbits);
- } else {
- fprintf(stderr, " %d\n", 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 [%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];
-}
git.stg.codes / stg.git / blobdiff