static void dump_index(const char *filename)
{
FILE *cfile;
cfile = fopen(filename, "r");
if (!cfile)
fatal("Could not open %s for reading: %s\n",
filename, strerror(errno));
index_dump(cfile, stdout, "");
fclose(cfile);
}
int
index_verify(cppip_t *c, int mode)
{
int n;
uint8_t type;
struct stat stat_buf;
/** sanity check */
if (fstat(c->index, &stat_buf) == -1)
{
snprintf(c->errbuf, BUFSIZ,
"can't stat %s: %s\n", c->index_fname, strerror(errno));
return (-1);
}
if (stat_buf.st_size <= CPPIP_FH_SIZ + CPPIP_INDEX_PN_H_SIZ +
CPPIP_REC_PN_SIZ)
{
snprintf(c->errbuf, BUFSIZ,
"%s is too small to be a valid cppip index\n", c->index_fname);
return (-1);
}
/** make sure we're at the beggining of the file and peel the header */
lseek(c->index, 0L, SEEK_SET);
if (read(c->index, &c->cppip_h, CPPIP_FH_SIZ) != CPPIP_FH_SIZ)
{
snprintf(c->errbuf, BUFSIZ, "read() error: %s\n", strerror(errno));
return (-1);
}
if (c->cppip_h.magic != CPPIP_MAGIC)
{
snprintf(c->errbuf, BUFSIZ,
"bad magic: %0x. Is `%s` a cppip index file?\n", c->cppip_h.magic,
c->index_fname);
return (-1);
}
/** iterate over file header options */
for (n = c->cppip_h.hdr_size - (CPPIP_FH_SIZ / 4); n; )
{
/** we use peek-read so we don't have to rewind to read the header */
if (pread(c->index, &type, 1, lseek(c->index, 0, SEEK_CUR)) == -1)
{
snprintf(c->errbuf, BUFSIZ, "read() error: %s\n", strerror(errno));
return (-1);
}
switch (type)
{
case CPPIP_INDEX_PN:
if (read(c->index, &c->cppip_index_pn_hdr,
CPPIP_INDEX_PN_H_SIZ) != CPPIP_INDEX_PN_H_SIZ)
{
snprintf(c->errbuf, BUFSIZ, "read() error: %s\n",
strerror(errno));
return (-1);
}
n -= CPPIP_INDEX_PN_H_SIZ / 4;
if (n < 0)
{
snprintf(c->errbuf, BUFSIZ,
"header size mismatch: %d\n", n);
return (-1);
}
break;
case CPPIP_INDEX_TS:
if (read(c->index, &c->cppip_index_ts_hdr,
CPPIP_INDEX_TS_H_SIZ) != CPPIP_INDEX_TS_H_SIZ)
{
snprintf(c->errbuf, BUFSIZ, "read() error: %s\n",
strerror(errno));
return (-1);
}
n -= CPPIP_INDEX_TS_H_SIZ / 4;
if (n < 0)
{
snprintf(c->errbuf, BUFSIZ,
"header size mismatch: %d\n", n);
return (-1);
}
break;
default:
snprintf(c->errbuf, BUFSIZ,
"unknown index mode: %d\n", type);
return (-1);
}
}
if (mode & V_DETAILED)
{
index_print_info(c, type);
}
if (mode & V_DUMP)
{
return (index_dump(c, type));
}
return (1);
}
