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/* Copyright (c) 2007-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "mmap-util.h"
#include "mail-index-private.h"
#include "mail-index-strmap.h"
#include "doveadm-dump.h"
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
static uint32_t max_likely_index;
static size_t dump_hdr(const struct mail_index_strmap_header *hdr)
{
printf("version = %u\n", hdr->version);
printf("uid validity = %u\n", hdr->uid_validity);
return sizeof(*hdr);
}
static int dump_record(const uint8_t **p, const uint8_t *end, uint32_t *uid)
{
uint32_t uid_diff, n, i, count, crc32, idx;
size_t size;
/* <uid diff> <n> <crc32>*count <str_idx>*count */
if (mail_index_unpack_num(p, end, &uid_diff) < 0)
return -1;
*uid += uid_diff;
if (mail_index_unpack_num(p, end, &n) < 0)
return -1;
printf(" - uid %u: n=%u\n", *uid, n);
count = n < 2 ? n + 1 : n;
size = sizeof(crc32)*count + sizeof(idx)*count;
if (*p + size > end)
return -1;
for (i = 0; i < count; i++) {
if (i == 0)
printf(" - message-id: ");
else if (i == 1) {
if (n == 1)
printf(" - in-reply-to: ");
else
printf(" - references[1]: ");
} else {
printf(" - references[%u]: ", i);
}
memcpy(&crc32, *p + sizeof(crc32)*i, sizeof(crc32));
memcpy(&idx, *p + sizeof(crc32)*count + sizeof(idx)*i, sizeof(idx));
printf("crc32=%08x index=%u\n", crc32, idx);
if (idx > max_likely_index)
printf(" - index probably broken\n");
}
*p += size;
return 0;
}
static int dump_block(const uint8_t *data, const uint8_t *end, uint32_t *uid)
{
const uint8_t *p;
uint32_t block_size;
if (data + 4 >= end)
return -1;
memcpy(&block_size, data, sizeof(block_size));
block_size = mail_index_offset_to_uint32(block_size) >> 2;
printf(" - block_size=%u\n", block_size);
if (block_size == 0) {
/* finished */
return -1;
}
if (data + sizeof(block_size) + block_size > end) {
printf(" - broken!\n");
return -1;
}
p = data + sizeof(block_size);
end = p + block_size;
*uid += 1;
while (p != end) {
if (dump_record(&p, end, uid) < 0) {
printf(" - broken\n");
return -1;
}
}
return p - data;
}
static void
cmd_dump_thread(const char *path, const char *const *args ATTR_UNUSED)
{
unsigned int pos;
const void *map, *end;
struct stat st;
uint32_t uid;
int fd, ret;
fd = open(path, O_RDONLY);
if (fd < 0)
i_fatal("open(%s) failed: %m", path);
if (fstat(fd, &st) < 0)
i_fatal("fstat(%s) failed: %m", path);
max_likely_index = (st.st_size / 8) * 2;
map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
if (map == MAP_FAILED)
i_fatal("mmap() failed: %m");
end = CONST_PTR_OFFSET(map, st.st_size);
pos = dump_hdr(map);
uid = 0;
do {
printf("block at offset %u:\n", pos);
T_BEGIN {
ret = dump_block(CONST_PTR_OFFSET(map, pos), end, &uid);
pos += ret;
} T_END;
} while (ret > 0);
i_close_fd(&fd);
}
static bool test_dump_thread(const char *path)
{
const char *p;
p = strrchr(path, '.');
return p != NULL && strcmp(p, ".thread") == 0;
}
struct doveadm_cmd_dump doveadm_cmd_dump_thread = {
"thread",
test_dump_thread,
cmd_dump_thread
};
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