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authorLev Walkin <vlm@lionet.info>2016-01-23 08:50:28 -0800
committerLev Walkin <vlm@lionet.info>2016-01-23 08:59:04 -0800
commit41a1da63e5f812899be173dfb1b92d0c1eb981f5 (patch)
tree4fe96c9be0c26c5dfab7a92962449c6dd406b2cd /asn1c/unber.c
parent438fe8796fd1c6f270e2a98cef2958f6cacb2b02 (diff)
autoformatted (no semantic change)
Diffstat (limited to 'asn1c/unber.c')
-rw-r--r--asn1c/unber.c1360
1 files changed, 718 insertions, 642 deletions
diff --git a/asn1c/unber.c b/asn1c/unber.c
index 088491f7..43bdff94 100644
--- a/asn1c/unber.c
+++ b/asn1c/unber.c
@@ -27,9 +27,9 @@
*/
#include "sys-common.h"
-#define ASN_DISABLE_PER_SUPPORT 1
+#define ASN_DISABLE_PER_SUPPORT 1
-#include <asn1parser.h> /* For static string tables */
+#include <asn1parser.h> /* For static string tables */
#include <asn_application.h>
#include <constraints.c>
@@ -40,93 +40,88 @@
#include <RELATIVE-OID.c>
#include <asn_codecs_prim.c>
-#undef COPYRIGHT
-#define COPYRIGHT \
- "Copyright (c) 2004, 2005 Lev Walkin <vlm@lionet.info>\n"
+#undef COPYRIGHT
+#define COPYRIGHT "Copyright (c) 2004, 2005 Lev Walkin <vlm@lionet.info>\n"
-static void usage(const char *av0); /* Print the Usage screen and exit */
-static int process(const char *fname); /* Perform the BER decoding */
+static void usage(const char *av0); /* Print the Usage screen and exit */
+static int process(const char *fname); /* Perform the BER decoding */
static int decode_tlv_from_string(const char *datastring);
-static int single_type_decoding = 0; /* -1 enables that */
-static int minimalistic = 0; /* -m enables that */
-static int pretty_printing = 1; /* -p disables that */
-static int skip_bytes = 0; /* -s controls that */
-static char indent_bytes[16] = " "; /* -i controls that */
+static int single_type_decoding = 0; /* -1 enables that */
+static int minimalistic = 0; /* -m enables that */
+static int pretty_printing = 1; /* -p disables that */
+static int skip_bytes = 0; /* -s controls that */
+static char indent_bytes[16] = " "; /* -i controls that */
int
main(int ac, char **av) {
- int ch; /* Command line character */
- int i; /* Index in some loops */
-
- /*
- * Process command-line options.
- */
- while((ch = getopt(ac, av, "1hi:mps:t:v")) != -1)
- switch(ch) {
- case '1':
- single_type_decoding = 1;
- break;
- case 'i':
- i = atoi(optarg);
- if(i >= 0 && i < (int)sizeof(indent_bytes)) {
- memset(indent_bytes, ' ', i);
- indent_bytes[i] = '\0';
- } else {
- fprintf(stderr, "-i %s: Invalid indent value\n",optarg);
- exit(EX_USAGE);
- }
- break;
- case 'm':
- minimalistic = 1;
- break;
- case 'p':
- pretty_printing = 0;
- break;
- case 's':
- skip_bytes = atoi(optarg);
- if(skip_bytes < 0) {
- fprintf(stderr, "-s %s: positive value expected\n",
- optarg);
- exit(EX_USAGE);
- }
- break;
- case 't':
- if(decode_tlv_from_string(optarg))
- exit(EX_DATAERR);
- exit(0);
- case 'v':
- fprintf(stderr, "ASN.1 BER Decoder, v" VERSION "\n" COPYRIGHT);
- exit(0);
- break;
- case 'h':
- default:
- usage(av[0]);
- }
-
- /*
- * Ensure that there are some input files present.
- */
- if(ac > optind) {
- ac -= optind;
- av += optind;
- } else {
- fprintf(stderr, "%s: No input files specified\n", av[0]);
- exit(1);
- }
-
- setvbuf(stdout, 0, _IOLBF, 0);
-
- /*
- * Iterate over input files and parse each.
- * All syntax trees from all files will be bundled together.
- */
- for(i = 0; i < ac; i++) {
- if(process(av[i]))
- exit(EX_DATAERR);
- }
-
- return 0;
+ int ch; /* Command line character */
+ int i; /* Index in some loops */
+
+ /*
+ * Process command-line options.
+ */
+ while((ch = getopt(ac, av, "1hi:mps:t:v")) != -1) switch(ch) {
+ case '1':
+ single_type_decoding = 1;
+ break;
+ case 'i':
+ i = atoi(optarg);
+ if(i >= 0 && i < (int)sizeof(indent_bytes)) {
+ memset(indent_bytes, ' ', i);
+ indent_bytes[i] = '\0';
+ } else {
+ fprintf(stderr, "-i %s: Invalid indent value\n", optarg);
+ exit(EX_USAGE);
+ }
+ break;
+ case 'm':
+ minimalistic = 1;
+ break;
+ case 'p':
+ pretty_printing = 0;
+ break;
+ case 's':
+ skip_bytes = atoi(optarg);
+ if(skip_bytes < 0) {
+ fprintf(stderr, "-s %s: positive value expected\n", optarg);
+ exit(EX_USAGE);
+ }
+ break;
+ case 't':
+ if(decode_tlv_from_string(optarg)) exit(EX_DATAERR);
+ exit(0);
+ case 'v':
+ fprintf(stderr, "ASN.1 BER Decoder, v" VERSION "\n" COPYRIGHT);
+ exit(0);
+ break;
+ case 'h':
+ default:
+ usage(av[0]);
+ }
+
+ /*
+ * Ensure that there are some input files present.
+ */
+ if(ac > optind) {
+ ac -= optind;
+ av += optind;
+ } else {
+ fprintf(stderr, "%s: No input files specified\n", av[0]);
+ exit(1);
+ }
+
+ setvbuf(stdout, 0, _IOLBF, 0);
+
+ /*
+ * Iterate over input files and parse each.
+ * All syntax trees from all files will be bundled together.
+ */
+ for(i = 0; i < ac; i++) {
+ if(process(av[i])) exit(EX_DATAERR);
+ }
+
+ return 0;
}
/*
@@ -134,6 +129,7 @@ main(int ac, char **av) {
*/
static void
usage(const char *av0) {
+ /* clang-format off */
fprintf(stderr,
"ASN.1 BER Decoder, v" VERSION "\n" COPYRIGHT
"Usage: %s [options] [-] [file ...]\n"
@@ -157,16 +153,22 @@ usage(const char *av0) {
" [F] Indicates that the value was reformatted (pretty-printed)\n"
"See the manual page for details\n"
, av0);
- exit(EX_USAGE);
+ /* clang-format on */
+ exit(EX_USAGE);
}
typedef enum pd_code {
- PD_FAILED = -1,
- PD_FINISHED = 0,
- PD_EOF = 1,
+ PD_FAILED = -1,
+ PD_FINISHED = 0,
+ PD_EOF = 1,
} pd_code_e;
-static pd_code_e process_deeper(const char *fname, FILE *fp, asn1c_integer_t *offset, int level, ssize_t limit, ber_tlv_len_t *frame_size, ber_tlv_len_t effective_size, int expect_eoc);
-static void print_TL(int fin, asn1c_integer_t offset, int level, int constr, ssize_t tlen, ber_tlv_tag_t, ber_tlv_len_t, ber_tlv_len_t effective_frame_size);
+static pd_code_e process_deeper(const char *fname, FILE *fp,
+ asn1c_integer_t *offset, int level,
+ ssize_t limit, ber_tlv_len_t *frame_size,
+ ber_tlv_len_t effective_size, int expect_eoc);
+static void print_TL(int fin, asn1c_integer_t offset, int level, int constr,
+ ssize_t tlen, ber_tlv_tag_t, ber_tlv_len_t,
+ ber_tlv_len_t effective_frame_size);
static int print_V(const char *fname, FILE *fp, ber_tlv_tag_t, ber_tlv_len_t);
/*
@@ -174,514 +176,515 @@ static int print_V(const char *fname, FILE *fp, ber_tlv_tag_t, ber_tlv_len_t);
*/
static int
process(const char *fname) {
- FILE *fp;
- pd_code_e pdc;
- asn1c_integer_t offset = 0; /* Stream decoding position */
- ber_tlv_len_t frame_size = 0; /* Single frame size */
-
- if(strcmp(fname, "-")) {
- fp = fopen(fname, "rb");
- if(!fp) {
- perror(fname);
- return -1;
- }
- } else {
- fp = stdin;
- }
-
- /*
- * Skip the requested amount of bytes.
- */
- for(; offset < skip_bytes; offset++) {
- if(fgetc(fp) == -1) {
- fprintf(stderr,
- "%s: input source (%" PRIdASN " bytes) "
- "has less data than \"-s %d\" switch "
- "wants to skip\n",
- fname, offset, skip_bytes);
- if(fp != stdin) fclose(fp);
- return -1;
- }
- }
-
- /*
- * Fetch out BER-encoded data until EOF or error.
- */
- do {
- pdc = process_deeper(fname, fp, &offset,
- 0, -1, &frame_size, 0, 0);
- } while(pdc == PD_FINISHED && !single_type_decoding);
-
- if(fp != stdin)
- fclose(fp);
-
- if(pdc == PD_FAILED)
- return -1;
- return 0;
+ FILE *fp;
+ pd_code_e pdc;
+ asn1c_integer_t offset = 0; /* Stream decoding position */
+ ber_tlv_len_t frame_size = 0; /* Single frame size */
+
+ if(strcmp(fname, "-")) {
+ fp = fopen(fname, "rb");
+ if(!fp) {
+ perror(fname);
+ return -1;
+ }
+ } else {
+ fp = stdin;
+ }
+
+ /*
+ * Skip the requested amount of bytes.
+ */
+ for(; offset < skip_bytes; offset++) {
+ if(fgetc(fp) == -1) {
+ fprintf(stderr, "%s: input source (%" PRIdASN
+ " bytes) "
+ "has less data than \"-s %d\" switch "
+ "wants to skip\n",
+ fname, offset, skip_bytes);
+ if(fp != stdin) fclose(fp);
+ return -1;
+ }
+ }
+
+ /*
+ * Fetch out BER-encoded data until EOF or error.
+ */
+ do {
+ pdc = process_deeper(fname, fp, &offset, 0, -1, &frame_size, 0, 0);
+ } while(pdc == PD_FINISHED && !single_type_decoding);
+
+ if(fp != stdin) fclose(fp);
+
+ if(pdc == PD_FAILED) return -1;
+ return 0;
}
/*
* Process the TLV recursively.
*/
static pd_code_e
-process_deeper(const char *fname, FILE *fp, asn1c_integer_t *offset, int level, ssize_t limit, ber_tlv_len_t *frame_size, ber_tlv_len_t effective_size, int expect_eoc) {
- unsigned char tagbuf[32];
- ssize_t tblen = 0;
- pd_code_e pdc = PD_FINISHED;
- ber_tlv_tag_t tlv_tag;
- ber_tlv_len_t tlv_len;
- ssize_t t_len;
- ssize_t l_len;
-
- for(;;) {
- ber_tlv_len_t local_esize = 0;
- int constr;
- int ch;
-
- if(limit == 0)
- return PD_FINISHED;
-
- if(limit >= 0 && tblen >= limit) {
- fprintf(stderr,
- "%s: Too long TL sequence (%ld >= %ld)"
- " at %" PRIdASN ". "
- "Broken or maliciously constructed file\n",
- fname, (long)tblen, (long)limit, *offset);
- return PD_FAILED;
- }
-
- /* Get the next byte from the input stream */
- ch = fgetc(fp);
- if(ch == -1) {
- if(limit > 0 || expect_eoc) {
- fprintf(stderr,
- "%s: Unexpected end of file (TL)"
- " at %" PRIdASN "\n",
- fname, *offset);
- return PD_FAILED;
- } else {
- return PD_EOF;
- }
- }
-
- tagbuf[tblen++] = ch;
-
- /*
- * Decode the TLV tag.
- */
- t_len = ber_fetch_tag(tagbuf, tblen, &tlv_tag);
- switch(t_len) {
- case -1:
- fprintf(stderr, "%s: Fatal error decoding tag"
- " at %" PRIdASN "+%ld\n",
- fname, *offset, (long)tblen);
- return PD_FAILED;
- case 0:
- /* More data expected */
- continue;
- }
-
- /*
- * Decode the TLV length.
- */
- constr = BER_TLV_CONSTRUCTED(tagbuf);
- l_len = ber_fetch_length(constr,
- tagbuf + t_len, tblen - t_len, &tlv_len);
- switch(l_len) {
- case -1:
- fprintf(stderr,
- "%s: Fatal error decoding value length"
- " at %" PRIdASN "\n",
- fname, *offset + t_len);
- return PD_FAILED;
- case 0:
- /* More data expected */
- continue;
- }
-
- /* Make sure the T & L decoders took exactly the whole buffer */
- assert((t_len + l_len) == tblen);
-
- if(!expect_eoc || tagbuf[0] || tagbuf[1])
- print_TL(0, *offset, level, constr, tblen,
- tlv_tag, tlv_len, effective_size);
-
- if(limit != -1) {
- /* If limit is set, account for the TL sequence */
- limit -= (t_len + l_len);
- assert(limit >= 0);
-
- if(tlv_len > limit) {
- fprintf(stderr,
- "%s: Structure advertizes length (%ld) "
- "greater than of a parent container (%ld)\n",
- fname, (long)tlv_len, (long)limit);
- return PD_FAILED;
- }
- }
-
- *offset += t_len + l_len;
- *frame_size += t_len + l_len;
- effective_size += t_len + l_len;
- local_esize += t_len + l_len;
-
- if(expect_eoc && !tagbuf[0] && !tagbuf[1]) {
- /* End of content octets */
- print_TL(1, *offset - 2, level - 1, 1, 2, 0, -1,
- effective_size);
- return PD_FINISHED;
- }
-
- if(constr) {
- ber_tlv_len_t dec = 0;
- /*
- * This is a constructed type. Process recursively.
- */
- printf(">\n"); /* Close the opening tag */
- if(tlv_len != -1 && limit != -1) {
- assert(limit >= tlv_len);
- }
- pdc = process_deeper(fname, fp, offset, level + 1,
- tlv_len == -1 ? limit : tlv_len,
- &dec, t_len + l_len, tlv_len == -1);
- if(pdc == PD_FAILED) return pdc;
- if(limit != -1) {
- assert(limit >= dec);
- limit -= dec;
- }
- *frame_size += dec;
- effective_size += dec;
- local_esize += dec;
- if(tlv_len == -1) {
- tblen = 0;
- if(pdc == PD_FINISHED
- && limit < 0 && !expect_eoc)
- return pdc;
- continue;
- }
- } else {
- assert(tlv_len >= 0);
- if(print_V(fname, fp, tlv_tag, tlv_len))
- return PD_FAILED;
-
- if(limit != -1) {
- assert(limit >= tlv_len);
- limit -= tlv_len;
- }
- *offset += tlv_len;
- *frame_size += tlv_len;
- effective_size += tlv_len;
- local_esize += tlv_len;
- }
-
- print_TL(1, *offset, level, constr, tblen,
- tlv_tag, tlv_len, local_esize);
-
- tblen = 0;
-
- /* Report success for a single top level TLV */
- if(level == 0 && limit == -1 && !expect_eoc)
- break;
- } /* for(;;) */
-
- return pdc;
+process_deeper(const char *fname, FILE *fp, asn1c_integer_t *offset, int level,
+ ssize_t limit, ber_tlv_len_t *frame_size,
+ ber_tlv_len_t effective_size, int expect_eoc) {
+ unsigned char tagbuf[32];
+ ssize_t tblen = 0;
+ pd_code_e pdc = PD_FINISHED;
+ ber_tlv_tag_t tlv_tag;
+ ber_tlv_len_t tlv_len;
+ ssize_t t_len;
+ ssize_t l_len;
+
+ for(;;) {
+ ber_tlv_len_t local_esize = 0;
+ int constr;
+ int ch;
+
+ if(limit == 0) return PD_FINISHED;
+
+ if(limit >= 0 && tblen >= limit) {
+ fprintf(stderr,
+ "%s: Too long TL sequence (%ld >= %ld)"
+ " at %" PRIdASN
+ ". "
+ "Broken or maliciously constructed file\n",
+ fname, (long)tblen, (long)limit, *offset);
+ return PD_FAILED;
+ }
+
+ /* Get the next byte from the input stream */
+ ch = fgetc(fp);
+ if(ch == -1) {
+ if(limit > 0 || expect_eoc) {
+ fprintf(stderr,
+ "%s: Unexpected end of file (TL)"
+ " at %" PRIdASN "\n",
+ fname, *offset);
+ return PD_FAILED;
+ } else {
+ return PD_EOF;
+ }
+ }
+
+ tagbuf[tblen++] = ch;
+
+ /*
+ * Decode the TLV tag.
+ */
+ t_len = ber_fetch_tag(tagbuf, tblen, &tlv_tag);
+ switch(t_len) {
+ case -1:
+ fprintf(stderr,
+ "%s: Fatal error decoding tag"
+ " at %" PRIdASN "+%ld\n",
+ fname, *offset, (long)tblen);
+ return PD_FAILED;
+ case 0:
+ /* More data expected */
+ continue;
+ }
+
+ /*
+ * Decode the TLV length.
+ */
+ constr = BER_TLV_CONSTRUCTED(tagbuf);
+ l_len =
+ ber_fetch_length(constr, tagbuf + t_len, tblen - t_len, &tlv_len);
+ switch(l_len) {
+ case -1:
+ fprintf(stderr,
+ "%s: Fatal error decoding value length"
+ " at %" PRIdASN "\n",
+ fname, *offset + t_len);
+ return PD_FAILED;
+ case 0:
+ /* More data expected */
+ continue;
+ }
+
+ /* Make sure the T & L decoders took exactly the whole buffer */
+ assert((t_len + l_len) == tblen);
+
+ if(!expect_eoc || tagbuf[0] || tagbuf[1])
+ print_TL(0, *offset, level, constr, tblen, tlv_tag, tlv_len,
+ effective_size);
+
+ if(limit != -1) {
+ /* If limit is set, account for the TL sequence */
+ limit -= (t_len + l_len);
+ assert(limit >= 0);
+
+ if(tlv_len > limit) {
+ fprintf(stderr,
+ "%s: Structure advertizes length (%ld) "
+ "greater than of a parent container (%ld)\n",
+ fname, (long)tlv_len, (long)limit);
+ return PD_FAILED;
+ }
+ }
+
+ *offset += t_len + l_len;
+ *frame_size += t_len + l_len;
+ effective_size += t_len + l_len;
+ local_esize += t_len + l_len;
+
+ if(expect_eoc && !tagbuf[0] && !tagbuf[1]) {
+ /* End of content octets */
+ print_TL(1, *offset - 2, level - 1, 1, 2, 0, -1, effective_size);
+ return PD_FINISHED;
+ }
+
+ if(constr) {
+ ber_tlv_len_t dec = 0;
+ /*
+ * This is a constructed type. Process recursively.
+ */
+ printf(">\n"); /* Close the opening tag */
+ if(tlv_len != -1 && limit != -1) {
+ assert(limit >= tlv_len);
+ }
+ pdc = process_deeper(fname, fp, offset, level + 1,
+ tlv_len == -1 ? limit : tlv_len, &dec,
+ t_len + l_len, tlv_len == -1);
+ if(pdc == PD_FAILED) return pdc;
+ if(limit != -1) {
+ assert(limit >= dec);
+ limit -= dec;
+ }
+ *frame_size += dec;
+ effective_size += dec;
+ local_esize += dec;
+ if(tlv_len == -1) {
+ tblen = 0;
+ if(pdc == PD_FINISHED && limit < 0 && !expect_eoc) return pdc;
+ continue;
+ }
+ } else {
+ assert(tlv_len >= 0);
+ if(print_V(fname, fp, tlv_tag, tlv_len)) return PD_FAILED;
+
+ if(limit != -1) {
+ assert(limit >= tlv_len);
+ limit -= tlv_len;
+ }
+ *offset += tlv_len;
+ *frame_size += tlv_len;
+ effective_size += tlv_len;
+ local_esize += tlv_len;
+ }
+
+ print_TL(1, *offset, level, constr, tblen, tlv_tag, tlv_len,
+ local_esize);
+
+ tblen = 0;
+
+ /* Report success for a single top level TLV */
+ if(level == 0 && limit == -1 && !expect_eoc) break;
+ } /* for(;;) */
+
+ return pdc;
}
static void
-print_TL(int fin, asn1c_integer_t offset, int level, int constr, ssize_t tlen, ber_tlv_tag_t tlv_tag, ber_tlv_len_t tlv_len, ber_tlv_len_t effective_size) {
-
- if(fin && !constr) {
- printf("</P>\n");
- return;
- }
-
- while(level-- > 0) fputs(indent_bytes, stdout); /* Print indent */
- printf(fin ? "</" : "<");
-
- printf(constr ? ((tlv_len == -1) ? "I" : "C") : "P");
-
- /* Print out the offset of this boundary, even if closing tag */
- if(!minimalistic)
- printf(" O=\"%" PRIdASN "\"", offset);
-
- printf(" T=\"");
- ber_tlv_tag_fwrite(tlv_tag, stdout);
- printf("\"");
-
- if(!fin || (tlv_len == -1 && !minimalistic))
- printf(" TL=\"%ld\"", (long)tlen);
- if(!fin) {
- if(tlv_len == -1)
- printf(" V=\"Indefinite\"");
- else
- printf(" V=\"%ld\"", (long)tlv_len);
- }
-
- if(!minimalistic
- && BER_TAG_CLASS(tlv_tag) == ASN_TAG_CLASS_UNIVERSAL) {
- const char *str;
- ber_tlv_tag_t tvalue = BER_TAG_VALUE(tlv_tag);
- str = ASN_UNIVERSAL_TAG2STR(tvalue);
- if(str) printf(" A=\"%s\"", str);
- }
-
- if(fin) {
- if(constr && !minimalistic)
- printf(" L=\"%ld\"", (long)effective_size);
- printf(">\n");
- }
+print_TL(int fin, asn1c_integer_t offset, int level, int constr, ssize_t tlen,
+ ber_tlv_tag_t tlv_tag, ber_tlv_len_t tlv_len,
+ ber_tlv_len_t effective_size) {
+ if(fin && !constr) {
+ printf("</P>\n");
+ return;
+ }
+
+ while(level-- > 0) fputs(indent_bytes, stdout); /* Print indent */
+ printf(fin ? "</" : "<");
+
+ printf(constr ? ((tlv_len == -1) ? "I" : "C") : "P");
+
+ /* Print out the offset of this boundary, even if closing tag */
+ if(!minimalistic) printf(" O=\"%" PRIdASN "\"", offset);
+
+ printf(" T=\"");
+ ber_tlv_tag_fwrite(tlv_tag, stdout);
+ printf("\"");
+
+ if(!fin || (tlv_len == -1 && !minimalistic))
+ printf(" TL=\"%ld\"", (long)tlen);
+ if(!fin) {
+ if(tlv_len == -1)
+ printf(" V=\"Indefinite\"");
+ else
+ printf(" V=\"%ld\"", (long)tlv_len);
+ }
+
+ if(!minimalistic && BER_TAG_CLASS(tlv_tag) == ASN_TAG_CLASS_UNIVERSAL) {
+ const char *str;
+ ber_tlv_tag_t tvalue = BER_TAG_VALUE(tlv_tag);
+ str = ASN_UNIVERSAL_TAG2STR(tvalue);
+ if(str) printf(" A=\"%s\"", str);
+ }
+
+ if(fin) {
+ if(constr && !minimalistic) printf(" L=\"%ld\"", (long)effective_size);
+ printf(">\n");
+ }
}
/*
* Print the value in binary form, or reformat for pretty-printing.
*/
static int
-print_V(const char *fname, FILE *fp, ber_tlv_tag_t tlv_tag, ber_tlv_len_t tlv_len) {
- asn1c_integer_t *arcs = 0; /* Object identifier arcs */
- unsigned char *vbuf = 0;
- asn1p_expr_type_e etype = 0;
- asn1c_integer_t collector = 0;
- int special_format = 0;
- ssize_t i;
-
- /* Figure out what type is it */
- if(BER_TAG_CLASS(tlv_tag) == ASN_TAG_CLASS_UNIVERSAL
- && pretty_printing) {
- ber_tlv_tag_t tvalue = BER_TAG_VALUE(tlv_tag);
- etype = ASN_UNIVERSAL_TAG2TYPE(tvalue);
- }
-
- /*
- * Determine how to print the value, either in its native binary form,
- * encoded with &xNN characters, or using pretty-printing.
- * The basic string types (including "useful types", like UTCTime)
- * are excempt from this determination logic, because their alphabets
- * are subsets of the XML's native UTF-8 encoding.
- */
- switch(etype) {
- case ASN_BASIC_BOOLEAN:
- if(tlv_len == 1)
- special_format = 1;
- else
- etype = 0;
- break;
- case ASN_BASIC_INTEGER:
- case ASN_BASIC_ENUMERATED:
- if((size_t)tlv_len <= sizeof(collector))
- special_format = 1;
- else
- etype = 0;
- break;
- case ASN_BASIC_OBJECT_IDENTIFIER:
- case ASN_BASIC_RELATIVE_OID:
- if(tlv_len > 0 && tlv_len < 128*1024 /* VERY long OID! */) {
- arcs = MALLOC(sizeof(*arcs) * (tlv_len + 1));
- if(arcs) {
- vbuf = MALLOC(tlv_len + 1);
- /* Not checking is intentional */
- }
- }
- case ASN_BASIC_UTCTime:
- case ASN_BASIC_GeneralizedTime:
- case ASN_STRING_NumericString:
- case ASN_STRING_PrintableString:
- case ASN_STRING_VisibleString:
- case ASN_STRING_IA5String:
- case ASN_STRING_UTF8String:
- break; /* Directly compatible with UTF-8 */
- case ASN_STRING_BMPString:
- case ASN_STRING_UniversalString:
- break; /* Not directly compatible with UTF-8 */
- default:
- /* Conditionally compatible with UTF-8 */
- if((
- (etype & ASN_STRING_MASK)
- ||
- (etype == ASN_BASIC_OCTET_STRING)
- ||
- /*
- * AUTOMATIC TAGS or IMPLICIT TAGS in effect,
- * Treat this primitive type as OCTET_STRING.
- */
- (BER_TAG_CLASS(tlv_tag) != ASN_TAG_CLASS_UNIVERSAL
- && pretty_printing)
- ) && (tlv_len > 0 && tlv_len < 128 * 1024)) {
- vbuf = MALLOC(tlv_len + 1);
- /* Not checking is intentional */
- }
- break;
- }
-
- /* If collection vbuf is present, defer printing the F flag. */
- if(!vbuf) printf(special_format ? " F>" : ">");
-
- /*
- * Print the value in binary or text form,
- * or collect the bytes into vbuf.
- */
- for(i = 0; i < tlv_len; i++) {
- int ch = fgetc(fp);
- if(ch == -1) {
- fprintf(stderr,
- "%s: Unexpected end of file (V)\n", fname);
- if(vbuf) FREEMEM(vbuf);
- if(arcs) FREEMEM(arcs);
- return -1;
- }
- switch(etype) {
- case ASN_BASIC_UTCTime:
- case ASN_BASIC_GeneralizedTime:
- case ASN_STRING_NumericString:
- case ASN_STRING_PrintableString:
- case ASN_STRING_VisibleString:
- case ASN_STRING_IA5String:
- case ASN_STRING_UTF8String:
- switch(ch) {
- default:
- if(((etype == ASN_STRING_UTF8String)
- || !(ch & 0x80))
- && (ch >= 0x20)
- ) {
- printf("%c", ch);
- break;
- }
- /* Fall through */
- case 0x3c: case 0x3e: case 0x26:
- printf("&#x%02x;", ch);
- }
- break;
- case ASN_BASIC_BOOLEAN:
- switch(ch) {
- case 0: printf("<false/>"); break;
- case 0xff: printf("<true/>"); break;
- default: printf("<true value=\"&#x%02x\"/>", ch);
- }
- break;
- case ASN_BASIC_INTEGER:
- case ASN_BASIC_ENUMERATED:
- if(i) collector = collector * 256 + ch;
- else collector = (int)(signed char)ch;
- break;
- default:
- if(vbuf) {
- vbuf[i] = ch;
- } else {
- printf("&#x%02x;", ch);
- }
- }
- }
-
- /* Do post-processing */
- switch(etype) {
- case ASN_BASIC_INTEGER:
- case ASN_BASIC_ENUMERATED:
- printf("%" PRIdASN, collector);
- break;
- case ASN_BASIC_OBJECT_IDENTIFIER:
- if(vbuf) {
- OBJECT_IDENTIFIER_t oid;
- int arcno;
-
- oid.buf = vbuf;
- oid.size = tlv_len;
-
- arcno = OBJECT_IDENTIFIER_get_arcs(&oid, arcs,
- sizeof(*arcs), tlv_len + 1);
- if(arcno >= 0) {
- assert(arcno <= (tlv_len + 1));
- printf(" F>");
- for(i = 0; i < arcno; i++) {
- if(i) printf(".");
- printf("%" PRIuASN, arcs[i]);
- }
- FREEMEM(vbuf);
- vbuf = 0;
- }
- }
- break;
- case ASN_BASIC_RELATIVE_OID:
- if(vbuf) {
- RELATIVE_OID_t oid;
- int arcno;
-
- oid.buf = vbuf;
- oid.size = tlv_len;
-
- arcno = RELATIVE_OID_get_arcs(&oid, arcs,
- sizeof(*arcs), tlv_len);
- if(arcno >= 0) {
- assert(arcno <= (tlv_len + 1));
- printf(" F>");
- for(i = 0; i < arcno; i++) {
- if(i) printf(".");
- printf("%" PRIuASN, arcs[i]);
- }
- FREEMEM(vbuf);
- vbuf = 0;
- }
- }
- break;
- default: break;
- }
-
- /*
- * If the buffer was not consumed, print it out.
- * It might be an OCTET STRING or other primitive type,
- * which might actually be printable, but we need to figure it out.
- */
- if(vbuf) {
- int binary;
-
- /*
- * Check whether the data could be represented as text
- */
- binary = -1 * (tlv_len >> 3); /* Threshold is 12.5% binary */
- for(i = 0; i < tlv_len; i++) {
- switch(vbuf[i]) {
- case 0x1b: binary = 1; break;
- case 0x09: case 0x0a: case 0x0d: continue;
- default:
- if(vbuf[i] < 0x20 || vbuf[i] >= 0x7f)
- if(++binary > 0) /* Way too many */
- break;
- continue;
- }
- break;
- }
- printf(">");
- for(i = 0; i < tlv_len; i++) {
- if(binary > 0 || vbuf[i] < 0x20 || vbuf[i] >= 0x7f
- || vbuf[i] == 0x26 /* '&' */
- || vbuf[i] == 0x3c /* '<' */
- || vbuf[i] == 0x3e /* '>' */
- )
- printf("&#x%02x;", vbuf[i]);
- else
- printf("%c", vbuf[i]);
- }
- FREEMEM(vbuf);
- }
-
- if(arcs) FREEMEM(arcs);
- return 0;
+print_V(const char *fname, FILE *fp, ber_tlv_tag_t tlv_tag,
+ ber_tlv_len_t tlv_len) {
+ asn1c_integer_t *arcs = 0; /* Object identifier arcs */
+ unsigned char *vbuf = 0;
+ asn1p_expr_type_e etype = 0;
+ asn1c_integer_t collector = 0;
+ int special_format = 0;
+ ssize_t i;
+
+ /* Figure out what type is it */
+ if(BER_TAG_CLASS(tlv_tag) == ASN_TAG_CLASS_UNIVERSAL && pretty_printing) {
+ ber_tlv_tag_t tvalue = BER_TAG_VALUE(tlv_tag);
+ etype = ASN_UNIVERSAL_TAG2TYPE(tvalue);
+ }
+
+ /*
+ * Determine how to print the value, either in its native binary form,
+ * encoded with &xNN characters, or using pretty-printing.
+ * The basic string types (including "useful types", like UTCTime)
+ * are excempt from this determination logic, because their alphabets
+ * are subsets of the XML's native UTF-8 encoding.
+ */
+ switch(etype) {
+ case ASN_BASIC_BOOLEAN:
+ if(tlv_len == 1)
+ special_format = 1;
+ else
+ etype = 0;
+ break;
+ case ASN_BASIC_INTEGER:
+ case ASN_BASIC_ENUMERATED:
+ if((size_t)tlv_len <= sizeof(collector))
+ special_format = 1;
+ else
+ etype = 0;
+ break;
+ case ASN_BASIC_OBJECT_IDENTIFIER:
+ case ASN_BASIC_RELATIVE_OID:
+ if(tlv_len > 0 && tlv_len < 128 * 1024 /* VERY long OID! */) {
+ arcs = MALLOC(sizeof(*arcs) * (tlv_len + 1));
+ if(arcs) {
+ vbuf = MALLOC(tlv_len + 1);
+ /* Not checking is intentional */
+ }
+ }
+ case ASN_BASIC_UTCTime:
+ case ASN_BASIC_GeneralizedTime:
+ case ASN_STRING_NumericString:
+ case ASN_STRING_PrintableString:
+ case ASN_STRING_VisibleString:
+ case ASN_STRING_IA5String:
+ case ASN_STRING_UTF8String:
+ break; /* Directly compatible with UTF-8 */
+ case ASN_STRING_BMPString:
+ case ASN_STRING_UniversalString:
+ break; /* Not directly compatible with UTF-8 */
+ default:
+ /* Conditionally compatible with UTF-8 */
+ if(((etype & ASN_STRING_MASK) || (etype == ASN_BASIC_OCTET_STRING) ||
+ /*
+ * AUTOMATIC TAGS or IMPLICIT TAGS in effect,
+ * Treat this primitive type as OCTET_STRING.
+ */
+ (BER_TAG_CLASS(tlv_tag) != ASN_TAG_CLASS_UNIVERSAL
+ && pretty_printing))
+ && (tlv_len > 0 && tlv_len < 128 * 1024)) {
+ vbuf = MALLOC(tlv_len + 1);
+ /* Not checking is intentional */
+ }
+ break;
+ }
+
+ /* If collection vbuf is present, defer printing the F flag. */
+ if(!vbuf) printf(special_format ? " F>" : ">");
+
+ /*
+ * Print the value in binary or text form,
+ * or collect the bytes into vbuf.
+ */
+ for(i = 0; i < tlv_len; i++) {
+ int ch = fgetc(fp);
+ if(ch == -1) {
+ fprintf(stderr, "%s: Unexpected end of file (V)\n", fname);
+ if(vbuf) FREEMEM(vbuf);
+ if(arcs) FREEMEM(arcs);
+ return -1;
+ }
+ switch(etype) {
+ case ASN_BASIC_UTCTime:
+ case ASN_BASIC_GeneralizedTime:
+ case ASN_STRING_NumericString:
+ case ASN_STRING_PrintableString:
+ case ASN_STRING_VisibleString:
+ case ASN_STRING_IA5String:
+ case ASN_STRING_UTF8String:
+ switch(ch) {
+ default:
+ if(((etype == ASN_STRING_UTF8String) || !(ch & 0x80))
+ && (ch >= 0x20)) {
+ printf("%c", ch);
+ break;
+ }
+ /* Fall through */
+ case 0x3c:
+ case 0x3e:
+ case 0x26:
+ printf("&#x%02x;", ch);
+ }
+ break;
+ case ASN_BASIC_BOOLEAN:
+ switch(ch) {
+ case 0:
+ printf("<false/>");
+ break;
+ case 0xff:
+ printf("<true/>");
+ break;
+ default:
+ printf("<true value=\"&#x%02x\"/>", ch);
+ }
+ break;
+ case ASN_BASIC_INTEGER:
+ case ASN_BASIC_ENUMERATED:
+ if(i)
+ collector = collector * 256 + ch;
+ else
+ collector = (int)(signed char)ch;
+ break;
+ default:
+ if(vbuf) {
+ vbuf[i] = ch;
+ } else {
+ printf("&#x%02x;", ch);
+ }
+ }
+ }
+
+ /* Do post-processing */
+ switch(etype) {
+ case ASN_BASIC_INTEGER:
+ case ASN_BASIC_ENUMERATED:
+ printf("%" PRIdASN, collector);
+ break;
+ case ASN_BASIC_OBJECT_IDENTIFIER:
+ if(vbuf) {
+ OBJECT_IDENTIFIER_t oid;
+ int arcno;
+
+ oid.buf = vbuf;
+ oid.size = tlv_len;
+
+ arcno = OBJECT_IDENTIFIER_get_arcs(&oid, arcs, sizeof(*arcs),
+ tlv_len + 1);
+ if(arcno >= 0) {
+ assert(arcno <= (tlv_len + 1));
+ printf(" F>");
+ for(i = 0; i < arcno; i++) {
+ if(i) printf(".");
+ printf("%" PRIuASN, arcs[i]);
+ }
+ FREEMEM(vbuf);
+ vbuf = 0;
+ }
+ }
+ break;
+ case ASN_BASIC_RELATIVE_OID:
+ if(vbuf) {
+ RELATIVE_OID_t oid;
+ int arcno;
+
+ oid.buf = vbuf;
+ oid.size = tlv_len;
+
+ arcno = RELATIVE_OID_get_arcs(&oid, arcs, sizeof(*arcs), tlv_len);
+ if(arcno >= 0) {
+ assert(arcno <= (tlv_len + 1));
+ printf(" F>");
+ for(i = 0; i < arcno; i++) {
+ if(i) printf(".");
+ printf("%" PRIuASN, arcs[i]);
+ }
+ FREEMEM(vbuf);
+ vbuf = 0;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+
+ /*
+ * If the buffer was not consumed, print it out.
+ * It might be an OCTET STRING or other primitive type,
+ * which might actually be printable, but we need to figure it out.
+ */
+ if(vbuf) {
+ int binary;
+
+ /*
+ * Check whether the data could be represented as text
+ */
+ binary = -1 * (tlv_len >> 3); /* Threshold is 12.5% binary */
+ for(i = 0; i < tlv_len; i++) {
+ switch(vbuf[i]) {
+ case 0x1b:
+ binary = 1;
+ break;
+ case 0x09:
+ case 0x0a:
+ case 0x0d:
+ continue;
+ default:
+ if(vbuf[i] < 0x20 || vbuf[i] >= 0x7f)
+ if(++binary > 0) /* Way too many */
+ break;
+ continue;
+ }
+ break;
+ }
+ printf(">");
+ for(i = 0; i < tlv_len; i++) {
+ if(binary > 0 || vbuf[i] < 0x20 || vbuf[i] >= 0x7f
+ || vbuf[i] == 0x26 /* '&' */
+ || vbuf[i] == 0x3c /* '<' */
+ || vbuf[i] == 0x3e /* '>' */
+ )
+ printf("&#x%02x;", vbuf[i]);
+ else
+ printf("%c", vbuf[i]);
+ }
+ FREEMEM(vbuf);
+ }
+
+ if(arcs) FREEMEM(arcs);
+ return 0;
}
static int
decode_tlv_from_string(const char *datastring) {
- unsigned char *data, *dp;
- size_t dsize; /* Data size */
- ssize_t len;
- ber_tlv_tag_t tlv_tag;
- ber_tlv_len_t tlv_len;
- const char *p;
- int half;
-
- dsize = strlen(datastring) + 1;
- dp = data = CALLOC(1, dsize);
- assert(data);
-
- for(half = 0, p = datastring; *p; p++) {
+ unsigned char *data, *dp;
+ size_t dsize; /* Data size */
+ ssize_t len;
+ ber_tlv_tag_t tlv_tag;
+ ber_tlv_len_t tlv_len;
+ const char *p;
+ int half;
+
+ dsize = strlen(datastring) + 1;
+ dp = data = CALLOC(1, dsize);
+ assert(data);
+
+ for(half = 0, p = datastring; *p; p++) {
+ /* clang-format off */
switch(*p) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
@@ -701,78 +704,151 @@ decode_tlv_from_string(const char *datastring) {
fprintf(stderr, "%s^ <- here\n", (char *)data);
return -1;
}
- if(half) dp++; else (*dp) <<= 4;
- half = !half;
- }
-
- assert((size_t)(dp - data) <= dsize);
- dsize = dp - data;
-
- printf("BER: ");
- for(dp = data; dp < data + dsize; dp++)
- printf("%02X", *dp);
- printf("\n");
-
- len = ber_fetch_tag(data, dsize, &tlv_tag);
- switch(len) {
- case -1:
- fprintf(stderr, "TAG: Fatal error decoding tag\n");
- return -1;
- case 0:
- fprintf(stderr, "TAG: More data expected\n");
- return -1;
- default:
- printf("TAG: ");
- ber_tlv_tag_fwrite(tlv_tag, stdout);
- if(BER_TLV_CONSTRUCTED(data)) {
- printf(" (constructed)");
- } else if(dsize >= 2 && data[0] == 0 && data[1] == 0) {
- printf(" (end-of-content)");
- } else {
- printf(" (primitive)");
- }
- if(BER_TAG_CLASS(tlv_tag) == ASN_TAG_CLASS_UNIVERSAL) {
- const char *str;
- ber_tlv_tag_t tvalue = BER_TAG_VALUE(tlv_tag);
- str = ASN_UNIVERSAL_TAG2STR(tvalue);
- if(str) printf(" \"%s\"", str);
- }
- printf("\n");
- }
-
- if(dsize > (size_t)len) {
- len = ber_fetch_length(BER_TLV_CONSTRUCTED(data),
- data + len, dsize - len, &tlv_len);
- switch(len) {
- case -1:
- fprintf(stderr,
- "LEN: Fatal error decoding length\n");
- return -1;
- case 0:
- fprintf(stderr, "LEN: More data expected\n");
- return -1;
- default:
- if(tlv_len == (ber_tlv_len_t)-1)
- printf("LEN: Indefinite length encoding\n");
- else
- printf("LEN: %ld bytes\n", (long)tlv_len);
- }
- }
-
- return 0;
+ /* clang-format on */
+ if(half)
+ dp++;
+ else
+ (*dp) <<= 4;
+ half = !half;
+ }
+
+ assert((size_t)(dp - data) <= dsize);
+ dsize = dp - data;
+
+ printf("BER: ");
+ for(dp = data; dp < data + dsize; dp++) printf("%02X", *dp);
+ printf("\n");
+
+ len = ber_fetch_tag(data, dsize, &tlv_tag);
+ switch(len) {
+ case -1:
+ fprintf(stderr, "TAG: Fatal error decoding tag\n");
+ return -1;
+ case 0:
+ fprintf(stderr, "TAG: More data expected\n");
+ return -1;
+ default:
+ printf("TAG: ");
+ ber_tlv_tag_fwrite(tlv_tag, stdout);
+ if(BER_TLV_CONSTRUCTED(data)) {
+ printf(" (constructed)");
+ } else if(dsize >= 2 && data[0] == 0 && data[1] == 0) {
+ printf(" (end-of-content)");
+ } else {
+ printf(" (primitive)");
+ }
+ if(BER_TAG_CLASS(tlv_tag) == ASN_TAG_CLASS_UNIVERSAL) {
+ const char *str;
+ ber_tlv_tag_t tvalue = BER_TAG_VALUE(tlv_tag);
+ str = ASN_UNIVERSAL_TAG2STR(tvalue);
+ if(str) printf(" \"%s\"", str);
+ }
+ printf("\n");
+ }
+
+ if(dsize > (size_t)len) {
+ len = ber_fetch_length(BER_TLV_CONSTRUCTED(data), data + len,
+ dsize - len, &tlv_len);
+ switch(len) {
+ case -1:
+ fprintf(stderr, "LEN: Fatal error decoding length\n");
+ return -1;
+ case 0:
+ fprintf(stderr, "LEN: More data expected\n");
+ return -1;
+ default:
+ if(tlv_len == (ber_tlv_len_t)-1)
+ printf("LEN: Indefinite length encoding\n");
+ else
+ printf("LEN: %ld bytes\n", (long)tlv_len);
+ }
+ }
+
+ return 0;
}
/*
* Dummy functions.
*/
-asn_dec_rval_t ber_check_tags(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, asn_struct_ctx_t *opt_ctx, const void *ptr, size_t size, int tag_mode, int last_tag_form, ber_tlv_len_t *last_length, int *opt_tlv_form) { asn_dec_rval_t rv = { 0, 0 }; (void)opt_codec_ctx; (void)td; (void)opt_ctx; (void)ptr; (void)size; (void)tag_mode; (void)last_tag_form; (void)last_length; (void)opt_tlv_form; return rv; }
+asn_dec_rval_t
+ber_check_tags(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
+ asn_struct_ctx_t *opt_ctx, const void *ptr, size_t size,
+ int tag_mode, int last_tag_form, ber_tlv_len_t *last_length,
+ int *opt_tlv_form) {
+ asn_dec_rval_t rv = {0, 0};
+ (void)opt_codec_ctx;
+ (void)td;
+ (void)opt_ctx;
+ (void)ptr;
+ (void)size;
+ (void)tag_mode;
+ (void)last_tag_form;
+ (void)last_length;
+ (void)opt_tlv_form;
+ return rv;
+}
-ssize_t der_write_tags(asn_TYPE_descriptor_t *td, size_t slen, int tag_mode, int last_tag_form, ber_tlv_tag_t tag, asn_app_consume_bytes_f *cb, void *app_key) { (void)td; (void)slen; (void)tag_mode; (void)last_tag_form; (void)tag; (void)cb; (void)app_key; return -1; }
+ssize_t
+der_write_tags(asn_TYPE_descriptor_t *td, size_t slen, int tag_mode,
+ int last_tag_form, ber_tlv_tag_t tag,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ (void)td;
+ (void)slen;
+ (void)tag_mode;
+ (void)last_tag_form;
+ (void)tag;
+ (void)cb;
+ (void)app_key;
+ return -1;
+}
-asn_dec_rval_t xer_decode_general(asn_codec_ctx_t *opt_codec_ctx, asn_struct_ctx_t *ctx, void *struct_key, const char *xml_tag, const void *buf_ptr, size_t size, int (*otd)(void *struct_key, const void *chunk_buf, size_t chunk_size), ssize_t (*br)(void *struct_key, const void *chunk_buf, size_t chunk_size, int have_more)) { asn_dec_rval_t rv = { 0, 0 }; (void)opt_codec_ctx; (void)ctx; (void)struct_key; (void)xml_tag; (void)buf_ptr; (void)size; (void)otd; (void)br; return rv; }
+asn_dec_rval_t
+xer_decode_general(asn_codec_ctx_t *opt_codec_ctx, asn_struct_ctx_t *ctx,
+ void *struct_key, const char *xml_tag, const void *buf_ptr,
+ size_t size,
+ int (*otd)(void *struct_key, const void *chunk_buf,
+ size_t chunk_size),
+ ssize_t (*br)(void *struct_key, const void *chunk_buf,
+ size_t chunk_size, int have_more)) {
+ asn_dec_rval_t rv = {0, 0};
+ (void)opt_codec_ctx;
+ (void)ctx;
+ (void)struct_key;
+ (void)xml_tag;
+ (void)buf_ptr;
+ (void)size;
+ (void)otd;
+ (void)br;
+ return rv;
+}
-asn_dec_rval_t OCTET_STRING_decode_uper(asn_codec_ctx_t *ctx, asn_TYPE_descriptor_t *td, asn_per_constraints_t *cts, void **sptr, asn_per_data_t *pd) { asn_dec_rval_t rv = { 0, 0 }; (void)ctx; (void)td; (void)cts; (void)sptr; (void)pd; return rv; }
+asn_dec_rval_t
+OCTET_STRING_decode_uper(asn_codec_ctx_t *ctx, asn_TYPE_descriptor_t *td,
+ asn_per_constraints_t *cts, void **sptr,
+ asn_per_data_t *pd) {
+ asn_dec_rval_t rv = {0, 0};
+ (void)ctx;
+ (void)td;
+ (void)cts;
+ (void)sptr;
+ (void)pd;
+ return rv;
+}
-asn_enc_rval_t OCTET_STRING_encode_uper(asn_TYPE_descriptor_t *td, asn_per_constraints_t *cts, void *sptr, asn_per_outp_t *po) { asn_enc_rval_t er = { 0, 0, 0 }; (void)td; (void)cts; (void)sptr; (void)po; return er; }
+asn_enc_rval_t
+OCTET_STRING_encode_uper(asn_TYPE_descriptor_t *td, asn_per_constraints_t *cts,
+ void *sptr, asn_per_outp_t *po) {
+ asn_enc_rval_t er = {0, 0, 0};
+ (void)td;
+ (void)cts;
+ (void)sptr;
+ (void)po;
+ return er;
+}
-size_t xer_whitespace_span(const void *chunk_buf, size_t chunk_size) { (void)chunk_buf; (void)chunk_size; return 0; }
+size_t
+xer_whitespace_span(const void *chunk_buf, size_t chunk_size) {
+ (void)chunk_buf;
+ (void)chunk_size;
+ return 0;
+}