diff options
Diffstat (limited to 'asn1c/tests/check-70.-fwide-types.c')
-rw-r--r-- | asn1c/tests/check-70.-fwide-types.c | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/asn1c/tests/check-70.-fwide-types.c b/asn1c/tests/check-70.-fwide-types.c new file mode 100644 index 00000000..46a974a1 --- /dev/null +++ b/asn1c/tests/check-70.-fwide-types.c @@ -0,0 +1,324 @@ +/* + * Mode of operation: + * Each of the *.in files is XER-decoded, then converted into DER, + * then decoded from DER and encoded into XER again. The resulting + * stream is checked against rules specified in ../data-70/README file. + */ +#undef NDEBUG +#include <stdio.h> +#include <stdlib.h> +#include <sys/types.h> +#include <unistd.h> /* for chdir(2) */ +#include <string.h> +#include <dirent.h> +#include <assert.h> +#include <errno.h> + +#include <PDU.h> + +enum expectation { + EXP_OK, /* Encoding/decoding must succeed */ + EXP_CXER_EXACT, /* Encoding/decoding using CXER must be exact */ + EXP_CXER_DIFF, /* Encoding/decoding using CXER must be different */ + EXP_BROKEN, /* Decoding must fail */ + EXP_DIFFERENT, /* Reconstruction will yield different encoding */ +}; + +static unsigned char buf[4096]; +static int buf_offset; + +static int +_buf_writer(const void *buffer, size_t size, void *app_key) { + unsigned char *b, *bend; + (void)app_key; + assert(buf_offset + size < sizeof(buf)); + memcpy(buf + buf_offset, buffer, size); + b = buf + buf_offset; + bend = b + size; + fprintf(stderr, "=> ["); + for(; b < bend; b++) { + if(*b >= 32 && *b < 127 && *b != '%') + fprintf(stderr, "%c", *b); + else + fprintf(stderr, "%%%02x", *b); + } + fprintf(stderr, "]:%ld\n", (long)size); + buf_offset += size; + return 0; +} + +enum der_or_xer { + AS_DER, + AS_XER, + AS_CXER, +}; + +static void +save_object_as(PDU_t *st, enum der_or_xer how) { + asn_enc_rval_t rval; /* Return value */ + + buf_offset = 0; + + /* + * Save object using specified method. + */ + switch(how) { + case AS_DER: + rval = der_encode(&asn_DEF_PDU, st, + _buf_writer, 0); + break; + case AS_XER: + rval = xer_encode(&asn_DEF_PDU, st, XER_F_BASIC, + _buf_writer, 0); + break; + case AS_CXER: + rval = xer_encode(&asn_DEF_PDU, st, XER_F_CANONICAL, + _buf_writer, 0); + break; + } + if (rval.encoded == -1) { + fprintf(stderr, + "Cannot encode %s: %s\n", + rval.failed_type->name, strerror(errno)); + assert(rval.encoded != -1); + return; + } + + fprintf(stderr, "SAVED OBJECT IN SIZE %d\n", buf_offset); +} + +static PDU_t * +load_object_from(enum expectation expectation, char *fbuf, int size, enum der_or_xer how) { + asn_dec_rval_t rval; + asn_dec_rval_t (*zer_decode)(struct asn_codec_ctx_s *, + asn_TYPE_descriptor_t *, void **, const void *, size_t); + PDU_t *st = 0; + int csize = 1; + + if(how == AS_DER) + zer_decode = ber_decode; + else + zer_decode = xer_decode; + + if(getenv("INITIAL_CHUNK_SIZE")) + csize = atoi(getenv("INITIAL_CHUNK_SIZE")); + + /* Perform multiple iterations with multiple chunks sizes */ + for(; csize < 20; csize += 1) { + int fbuf_offset = 0; + int fbuf_left = size; + int fbuf_chunk = csize; + + fprintf(stderr, "LOADING OBJECT OF SIZE %d, chunks %d\n", + size, csize); + + if(st) asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); + st = 0; + + do { + fprintf(stderr, "Decoding bytes %d..%d (left %d)\n", + fbuf_offset, + fbuf_chunk < fbuf_left + ? fbuf_chunk : fbuf_left, + fbuf_left); + if(st) { + fprintf(stderr, "=== currently ===\n"); + asn_fprint(stderr, &asn_DEF_PDU, st); + fprintf(stderr, "=== end ===\n"); + } + rval = zer_decode(0, &asn_DEF_PDU, (void **)&st, + fbuf + fbuf_offset, + fbuf_chunk < fbuf_left + ? fbuf_chunk : fbuf_left); + fbuf_offset += rval.consumed; + fbuf_left -= rval.consumed; + if(rval.code == RC_WMORE) + fbuf_chunk += 1; /* Give little more */ + else + fbuf_chunk = csize; /* Back off */ + } while(fbuf_left && rval.code == RC_WMORE); + + if(expectation != EXP_BROKEN) { + assert(rval.code == RC_OK); + if(how == AS_DER) { + assert(fbuf_offset == size); + } else { + assert(fbuf_offset - size < 2 + || (fbuf_offset + 1 /* "\n" */ == size + && fbuf[size - 1] == '\n') + || (fbuf_offset + 2 /* "\r\n" */ == size + && fbuf[size - 2] == '\r' + && fbuf[size - 1] == '\n') + ); + } + } else { + assert(rval.code != RC_OK); + fprintf(stderr, "Failed, but this was expected\n"); + asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); + st = 0; /* ignore leak for now */ + } + } + + if(st) asn_fprint(stderr, &asn_DEF_PDU, st); + return st; +} + +static int +xer_encoding_equal(char *obuf, size_t osize, char *nbuf, size_t nsize) { + char *oend = obuf + osize; + char *nend = nbuf + nsize; + + if((osize && !nsize) || (!osize && nsize)) + return 0; /* not equal apriori */ + + while(1) { + while(obuf < oend && isspace(*obuf)) obuf++; + while(nbuf < nend && isspace(*nbuf)) nbuf++; + + if(obuf == oend || nbuf == nend) { + if(obuf == oend && nbuf == nend) + break; + fprintf(stderr, "%s data in reconstructed encoding\n", + (obuf == oend) ? "More" : "Less"); + return 0; + } + + if(*obuf != *nbuf) { + printf("%c%c != %c%c\n", + obuf[0], obuf[1], + nbuf[0], nbuf[1]); + return 0; + } + obuf++, nbuf++; + } + + return 1; +} + +static void +process_XER_data(enum expectation expectation, char *fbuf, int size) { + PDU_t *st; + int ret; + + st = load_object_from(expectation, fbuf, size, AS_XER); + if(!st) return; + + /* Save and re-load as DER */ + save_object_as(st, AS_DER); + st = load_object_from(expectation, buf, buf_offset, AS_DER); + assert(st); + + save_object_as(st, + (expectation == EXP_CXER_EXACT + || expectation == EXP_CXER_DIFF) + ? AS_CXER : AS_XER); + fprintf(stderr, "=== original ===\n"); + fwrite(fbuf, 1, size, stderr); + fprintf(stderr, "=== re-encoded ===\n"); + fwrite(buf, 1, buf_offset, stderr); + fprintf(stderr, "=== end ===\n"); + + switch(expectation) { + case EXP_DIFFERENT: + assert(!xer_encoding_equal(fbuf, size, buf, buf_offset)); + break; + case EXP_BROKEN: + assert(!xer_encoding_equal(fbuf, size, buf, buf_offset)); + break; + case EXP_CXER_EXACT: + buf[buf_offset++] = '\n'; + assert(size == buf_offset); + assert(memcmp(fbuf, buf, size) == 0); + break; + case EXP_CXER_DIFF: + buf[buf_offset++] = '\n'; + assert(size != buf_offset + || memcmp(fbuf, buf, size)); + break; + case EXP_OK: + assert(xer_encoding_equal(fbuf, size, buf, buf_offset)); + break; + } + + asn_DEF_PDU.free_struct(&asn_DEF_PDU, st, 0); +} + +/* + * Decode the .der files and try to regenerate them. + */ +static int +process(const char *fname) { + char fbuf[4096]; + char *ext = strrchr(fname, '.'); + enum expectation expectation; + int ret; + int rd; + FILE *fp; + + if(ext == 0 || strcmp(ext, ".in")) + return 0; + + switch(ext[-1]) { + case 'B': /* The file is intentionally broken */ + expectation = EXP_BROKEN; break; + case 'D': /* Reconstructing should yield different data */ + expectation = EXP_DIFFERENT; break; + case 'E': /* Byte to byte exact reconstruction */ + expectation = EXP_CXER_EXACT; break; + case 'X': /* Should fail byte-to-byte comparison */ + expectation = EXP_CXER_DIFF; break; + default: + expectation = EXP_OK; break; + } + + fprintf(stderr, "\nProcessing file [../%s]\n", fname); + + ret = chdir("../data-70"); + assert(ret == 0); + fp = fopen(fname, "r"); + ret = chdir("../test-check-70.-fwide-types"); + assert(ret == 0); + assert(fp); + + rd = fread(fbuf, 1, sizeof(fbuf), fp); + fclose(fp); + + assert(rd < sizeof(fbuf)); /* expect small files */ + + process_XER_data(expectation, fbuf, rd); + + return 1; +} + +int +main() { + DIR *dir; + struct dirent *dent; + int processed_files = 0; + char *str; + + /* Process a specific test file */ + str = getenv("DATA_70_FILE"); + if(str && strncmp(str, "data-70-", 8) == 0) { + process(str); + return 0; + } + + dir = opendir("../data-70"); + assert(dir); + + /* + * Process each file in that directory. + */ + while((dent = readdir(dir))) { + if(strncmp(dent->d_name, "data-70-", 8) == 0) + if(process(dent->d_name)) + processed_files++; + } + + assert(processed_files); + closedir(dir); + + return 0; +} + |