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snebu-submitfiles.c
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snebu-submitfiles.c
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/* Copyright 2009 - 2021 Derek Pressnall
*
* This file is part of Snebu, the Simple Network Encrypting Backup Utility
*
* Snebu is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License Version 3
* as published by the Free Software Foundation.
*
* Snebu is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Snebu. If not, see <https://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <utime.h>
#include <time.h>
#include <getopt.h>
#include <sqlite3.h>
#include <errno.h>
#include <time.h>
#include <sys/time.h>
#include "tarlib.h"
int submitfiles2(int out);
char *stresc(char *src, char **target);
char *strescb(char *src, char **target, int len);
char *strunesc(char *src, char **target);
void stresc_free(char **target);
struct ringbuf *rbinit(size_t s);
size_t rbwrite(void *buf, size_t b, size_t c, struct ringbuf *r);
size_t rbread(void *buf, size_t b, size_t c, struct ringbuf *r);
size_t rbrewind(struct ringbuf *r, size_t c);
size_t rbsize(struct ringbuf *r);
size_t rbused(struct ringbuf *r);
size_t rbavail(struct ringbuf *r);
void rbfree(struct ringbuf *r);
int pipebuf(int *in, int *out);
void usage();
int checkperm(sqlite3 *bkcatalog, char *action, char *backupname);
extern sqlite3 *bkcatalog;
extern struct {
char *vault;
char *meta;
int hash;
} config;
extern char *SHN;
char *EncodeBlock2(char *out, char *in, int m, int *n);
char *DecodeBlock2(char *out, char *in, int m, int *n);
double ftime();
int flush_received_files(sqlite3 *bkcatalog, int verbose, int bkid,
unsigned long long est_size, unsigned long long *bytes_read);
int submitfiles_tmptables(sqlite3 *bkcatalog, int bkid);
sqlite3 *opendb();
long int strtoln(char *nptr, char **endptr, int base, int len);
void update_status(unsigned long long total_bytes_received, unsigned long long est_size, char *cur_filename, time_t cur_time, time_t start_time, char indicator);
int logaction(sqlite3 *bkcatalog, int backupset_id, int action, char *message);
struct {
unsigned long long unit;
char *label;
} display_units [] = {
{ 1, "B" },
{ 1000, "KB" },
{ 1000000, "MB" },
{ 1000000000, "GB" },
{ 1000000000000, "TB" },
};
int submitfiles(int argc, char **argv)
{
int in = -1;
int out = -1;
char *inbuf = NULL;
size_t len = 0;
int optc;
char bkname[128];
char datestamp[128];
int foundopts = 0;
int verbose = 0;
FILE *metadata;
char **mdfields = NULL;
char *sqlstmt = NULL;
sqlite3_stmt *sqlres;
char *sqlerr = NULL;
sqlite3_stmt *inbfrec;
long cipherid = 0;
char *xattru = NULL;
int xattrn;
char *paxdata;
int paxdatalen;
int cipher_record;
char *filenameu = NULL;
char *linknameu = NULL;
unsigned long long linkedfiles_bytes = 0;
char *eprvkeyu = NULL;
char *pubkeyu = NULL;
char *commentu = NULL;
struct option longopts[] = {
{ "name", required_argument, NULL, 'n' },
{ "datestamp", required_argument, NULL, 'd' },
{ "verbose", no_argument, NULL, 'v' },
{ NULL, no_argument, NULL, 0 }
};
struct cryptinfo_s {
int keynum;
char *hmac;
};
char *keygroups = NULL;
char **keygroupsp = NULL;
int longoptidx;
int numkeys = 0;
struct cryptinfo_s *cryptinfo = NULL;
int cryptinfo_n = 0;
char xattr_varstring[1024];
int bkid;
unsigned long long est_size = 0;
int est_files = 0;
int tot_files = 0;
while ((optc = getopt_long(argc, argv, "n:d:v", longopts, &longoptidx)) >= 0)
switch (optc) {
case 'n':
strncpy(bkname, optarg, 127);
bkname[127] = 0;
foundopts |= 1;
break;
case 'd':
strncpy(datestamp, optarg, 127);
datestamp[127] = 0;
foundopts |= 2;
break;
case 'v':
verbose += 1;
foundopts |= 4;
break;
default:
usage();
return(1);
}
if ((foundopts & 3) != 3) {
fprintf(stderr, "Didn't find all arguments %d\n", foundopts);
usage();
return(1);
}
/* needed to populate config that slubmitfiles2 needs in separate process */
opendb(bkcatalog);
sqlite3_close(bkcatalog);
pipebuf(&in, &out);
submitfiles2(in);
opendb(bkcatalog);
if (checkperm(bkcatalog, "backup", bkname)) {
sqlite3_close(bkcatalog);
return(1);
}
sqlite3_prepare_v2(bkcatalog,
(sqlstmt = sqlite3_mprintf("select backupset_id from backupsets "
"where name = '%q' and serial = '%q'",
bkname, datestamp)), -1, &sqlres, 0);
if (sqlite3_step(sqlres) == SQLITE_ROW) {
bkid = sqlite3_column_int(sqlres, 0);
}
else {
fprintf(stderr, "bkid not found 1: %s\n", sqlstmt);
return(1);
}
sqlite3_free(sqlstmt);
sqlite3_finalize(sqlres);
sqlite3_prepare_v2(bkcatalog,
(sqlstmt = sqlite3_mprintf("select sum(size) "
"from needed_file_entities where backupset_id = %d",
bkid)), -1, &sqlres, 0);
sqlite3_free(sqlstmt);
if (sqlite3_step(sqlres) == SQLITE_ROW) {
est_size = sqlite3_column_int64(sqlres, 0);
}
else
est_size = 0;
sqlite3_finalize(sqlres);
sqlite3_prepare_v2(bkcatalog,
(sqlstmt = sqlite3_mprintf("select count(*) "
"from needed_file_entities where backupset_id = %d",
bkid)), -1, &sqlres, 0);
sqlite3_free(sqlstmt);
if (sqlite3_step(sqlres) == SQLITE_ROW) {
est_files = sqlite3_column_int64(sqlres, 0);
}
sqlite3_finalize(sqlres);
int b_total_unit = 0;
for (int i = 0; i < sizeof(display_units) / sizeof(*display_units); i++)
if (est_size >= display_units[i].unit)
b_total_unit = i;
submitfiles_tmptables(bkcatalog, bkid);
metadata = fdopen(out, "r");
sqlstmt = sqlite3_mprintf(
"insert or replace into received_file_entities_t "
"(backupset_id, ftype, permission, user_name, user_id, "
"group_name, group_id, size, hash, datestamp, filename, extdata, xheader) "
"values (@bkid, @ftype, @mode, @auid, @nuid, @agid, "
"@ngid, @filesize, @hash, @modtime, @filename, @linktarget, @xheader)");
sqlite3_prepare_v2(bkcatalog, sqlstmt, -1, &inbfrec, 0);
sqlite3_free(sqlstmt);
sqlite3_exec(bkcatalog,
"create temporary table if not exists temp_cipher_detail "
"as select * from cipher_detail where 0", 0, 0, &sqlerr);
if (sqlerr != 0) {
fprintf(stderr, "%s %s\n", sqlerr, sqlstmt);
sqlite3_free(sqlerr);
}
sqlite3_exec(bkcatalog,
"create temporary table if not exists temp_key_map ( "
"keyposition integer, "
"id integer, "
"constraint temp_key_map_c1 unique ( "
"keyposition, id))", 0, 0, &sqlerr);
if (sqlerr != 0) {
fprintf(stderr, "%s\n", sqlerr);
sqlite3_free(sqlerr);
}
int inlen = 0;
unsigned long long total_bytes_received = 0;
double start_time = ftime();
double lastupdate_time = 0;
double lastflush_time = start_time;
double curtime = ftime();
if (verbose >= 1)
fprintf(stderr, "Transfering files\n");
if (verbose >= 1)
fprintf(stderr, "Estimated backup size: %6.2f %s\n\n",
(double) est_size / display_units[b_total_unit].unit,
display_units[b_total_unit].label);
logaction(bkcatalog, bkid, 4, "Begin receiving files");
while ((inlen = getline(&inbuf, &len, metadata)) > 0) {
if (inbuf[inlen - 1] == '\n')
inbuf[inlen - 1] = '\0';
else {
fprintf(stderr, "Metadata recording error\n");
exit(1);
}
parse(inbuf, &mdfields, '\t');
// Record encryption key data from global header
if (strcmp(mdfields[0], "0") == 0) {
if (atoi(mdfields[1]) + 1 > numkeys)
numkeys = atoi(mdfields[1]) + 1;
strunesc(mdfields[3], &eprvkeyu);
strunesc(mdfields[4], &pubkeyu);
strunesc(mdfields[6], &commentu);
sqlite3_exec(bkcatalog, (sqlstmt = sqlite3_mprintf(
"insert or ignore into cipher_master (pkfp, eprivkey, pubkey, hmackeyhash, comment) "
"values ('%q', '%q', '%q', '%q', '%q')", mdfields[2], eprvkeyu, pubkeyu,
mdfields[5], commentu)), 0, 0, &sqlerr);
if (sqlerr != 0) {
fprintf(stderr, "%s %s\n", sqlerr, sqlstmt);
sqlite3_free(sqlerr);
}
sqlite3_free(sqlstmt);
// get the primary key (cipherid) of recorded key data
if (sqlite3_prepare_v2(bkcatalog,
sqlstmt = sqlite3_mprintf("select cipherid from cipher_master "
"where pkfp = '%q' and eprivkey = '%q' and pubkey = '%q' "
"and hmackeyhash = '%q' and comment = '%q'", mdfields[2], eprvkeyu, pubkeyu,
mdfields[5], commentu), -1, &sqlres, 0) == SQLITE_OK) {
sqlite3_free(sqlstmt);
if (sqlite3_step(sqlres) == SQLITE_ROW) {
cipherid = sqlite3_column_int(sqlres, 0);
}
else {
fprintf(stderr, "Cipher key recording failure\n");
exit(1);
}
sqlite3_finalize(sqlres);
}
// temporary map of inbound key number and recorded key
sqlite3_exec(bkcatalog, (sqlstmt = sqlite3_mprintf(
"insert or replace into temp_key_map (keyposition, id)"
"values (%d, %d)", atoi(mdfields[1]), cipherid)), 0, 0, 0);
sqlite3_free(sqlstmt);
if (numkeys > cryptinfo_n) {
if (cryptinfo == NULL)
cryptinfo = malloc(sizeof(struct cryptinfo_s) * numkeys);
else
cryptinfo = realloc(cryptinfo, sizeof(struct cryptinfo_s) * numkeys);
for (int i = cryptinfo_n; i < numkeys; i++) {
cryptinfo[i].hmac = NULL;
}
cryptinfo_n = numkeys;
}
}
else if (strcmp(mdfields[0], "1") == 0) {
if (xattru == NULL)
xattru = dmalloc((int) (strlen(mdfields[13]) * 3 / 4));
else
if (dmalloc_size(xattru) < ((int) (strlen(mdfields[13]) * 3 / 4)))
xattru = drealloc(xattru, (int) (strlen(mdfields[13]) * 3 / 4));
DecodeBlock2(xattru, mdfields[13], strlen(mdfields[13]), &xattrn);
cipher_record = 0;
if (getpaxvar(xattru, xattrn, "TC.cipher", &paxdata, &paxdatalen) == 0) {
cipher_record = 1;
cpypaxvarstr(xattru, xattrn, "TC.keygroup", &keygroups);
parse(keygroups, &keygroupsp, '|');
for (int i = 0; keygroupsp[i] != NULL; i++) {
int n = atoi(keygroupsp[i]);
if (n < numkeys) {
cryptinfo[n].keynum = n;
if (numkeys > 1)
sprintf(xattr_varstring, "TC.hmac.%d", n);
else
sprintf(xattr_varstring, "TC.hmac");
cpypaxvarstr(xattru, xattrn, xattr_varstring, &(cryptinfo[n].hmac));
delpaxvar(&xattru, &xattrn, xattr_varstring);
}
}
}
delpaxvar(&xattru, &xattrn, "atime");
delpaxvar(&xattru, &xattrn, "TC.segmented.header");
sqlite3_bind_int(inbfrec, 1, bkid);
sqlite3_bind_text(inbfrec, 2, mdfields[1], -1, SQLITE_STATIC);
sqlite3_bind_text(inbfrec, 3, mdfields[2], -1, SQLITE_STATIC);
sqlite3_bind_text(inbfrec, 4, mdfields[3], -1, SQLITE_STATIC);
sqlite3_bind_int(inbfrec, 5, atoi(mdfields[4]));
sqlite3_bind_text(inbfrec, 6, mdfields[5], -1, SQLITE_STATIC);
sqlite3_bind_int(inbfrec, 7, atoi(mdfields[6]));
sqlite3_bind_int64(inbfrec, 8, atoll(mdfields[7]));
sqlite3_bind_text(inbfrec, 9, mdfields[8], -1, SQLITE_STATIC);
sqlite3_bind_int(inbfrec, 10, atoi(mdfields[9]));
strunesc(mdfields[10], &filenameu);
sqlite3_bind_text(inbfrec, 11, filenameu, -1, SQLITE_STATIC);
strunesc(mdfields[11], &linknameu);
sqlite3_bind_text(inbfrec, 12, linknameu, -1, SQLITE_STATIC);
sqlite3_bind_blob(inbfrec, 13, xattru, xattrn, SQLITE_STATIC);
if (! sqlite3_step(inbfrec)) {
fprintf(stderr, "Error inserting metadata record into temporary table\n"); ;
exit(1);
}
sqlite3_int64 fileid = sqlite3_last_insert_rowid(bkcatalog);
total_bytes_received += atoll(mdfields[7]);
tot_files++;
sqlite3_exec(bkcatalog, (sqlstmt = sqlite3_mprintf(
"insert or ignore into diskfiles_t (hash) "
"values ('%q')", mdfields[8])), 0, 0, &sqlerr);
if (sqlerr != 0) {
fprintf(stderr, "%s\n", sqlerr);
sqlite3_free(sqlerr);
}
sqlite3_free(sqlstmt);
if (cipher_record == 1) {
for (int i = 0; keygroupsp[i] != NULL; i++) {
int n = atoi(keygroupsp[i]);
sqlite3_exec(bkcatalog, (sqlstmt = sqlite3_mprintf(
"insert or ignore into temp_cipher_detail (file_id, keynum, hmac) "
"values (%d, %d, '%q')", fileid, cryptinfo[n].keynum,
cryptinfo[n].hmac)), 0, 0, &sqlerr);
if (sqlerr != 0) {
fprintf(stderr, "%s %s\n", sqlerr, sqlstmt);
sqlite3_free(sqlerr);
}
sqlite3_free(sqlstmt);
}
}
sqlite3_reset(inbfrec);
// Update status line
if ((curtime = ftime()) > lastupdate_time + 1 || lastupdate_time == 0) {
lastupdate_time = curtime;
if ((curtime = ftime()) > lastflush_time + 5) {
if (verbose >= 1)
update_status(total_bytes_received, est_size, mdfields[10], curtime, start_time, '*');
flush_received_files(bkcatalog, verbose, bkid, est_size, &linkedfiles_bytes);
total_bytes_received += linkedfiles_bytes;
lastflush_time = curtime;
}
if (verbose >= 1)
update_status(total_bytes_received, est_size, mdfields[10], curtime, start_time, ' ');
}
}
else if (strcmp(mdfields[0], "2") == 0) {
if ((curtime = ftime()) > lastupdate_time + 1 || lastupdate_time == 0) {
lastupdate_time = curtime;
if (verbose >= 1)
update_status(total_bytes_received + atoll(mdfields[2]), est_size, mdfields[1], curtime, start_time, '+');
}
}
else if (strcmp(mdfields[0], "2") == 0) {
flush_received_files(bkcatalog, verbose, bkid, est_size, &linkedfiles_bytes);
lastflush_time = curtime;
}
inbuf[0] = '\0';
}
free(inbuf);
dfree(keygroups);
dfree(keygroupsp);
dfree(mdfields);
dfree(eprvkeyu);
dfree(pubkeyu);
dfree(commentu);
for (int i = 0; i < numkeys; i++) {
dfree(cryptinfo[i].hmac);
}
free(cryptinfo);
dfree(xattru);
dfree(filenameu);
dfree(linknameu);
sqlite3_finalize(inbfrec);
if (verbose >= 1)
update_status(total_bytes_received, est_size, "Completed", curtime, start_time, '*');
flush_received_files(bkcatalog, verbose, bkid, est_size, &linkedfiles_bytes);
total_bytes_received += linkedfiles_bytes;
if (verbose >= 1) {
update_status(total_bytes_received, est_size, "Completed", curtime, start_time, ' ');
fprintf(stderr, "\n");
}
if (verbose >= 1)
fprintf(stderr, "%6.2f %s in %d files requested,\n",
(double) est_size / display_units[b_total_unit].unit,
display_units[b_total_unit].label, est_files);
int b_received_unit = 0;
for (int i = 0; i < sizeof(display_units) / sizeof(*display_units); i++)
if (total_bytes_received >= display_units[i].unit)
b_received_unit = i;
if (verbose >= 1)
fprintf(stderr, "%6.2f %s in %d files received.\n",
(double) total_bytes_received / display_units[b_received_unit].unit,
display_units[b_received_unit].label, tot_files);
fclose(metadata);
logaction(bkcatalog, bkid, 7, "End receiving files");
sqlite3_close(bkcatalog);
return(0);
}
int submitfiles2(int out_h)
{
struct filespec fs;
char *tmpfiledir = config.vault;
char *destdir = config.vault;
char destdir2[3];
char tmpfilepath[1024];
char targetdir[1024];
char targetpath[1024];
struct stat tmpfstat;
size_t sizeremaining;
char *paxdata;
int paxdatalen;
int curtmpfile;
FILE *curfile;
struct tarsplit_file *tsf;
size_t c;
size_t bufsize = 256 * 1024;
char databuf[bufsize];
int padding;
char *escfname = NULL;
char *esclname = NULL;
char *escxheader = NULL;
struct lzop_file *lzf;
struct sha_file *s1f;
unsigned char cfsha1[SHA_DIGEST_LENGTH];
unsigned char cfsha1x[SHA_DIGEST_LENGTH * 2 + 1];
unsigned char cfsha2[SHA256_DIGEST_LENGTH];
unsigned char cfsha2x[SHA256_DIGEST_LENGTH * 2 + 1];
unsigned char *cfshax = NULL;
int use_hmac = 0;
unsigned char hmac[EVP_MAX_MD_SIZE * 2 + 1];
int wrote_file = 0;
pid_t child;
int numkeys = 0;
char paxhdr_varstring[256];
if ((child = fork()) == 0) {
FILE *out = fdopen(out_h, "w");
char *sparsetext = NULL;
char *ciphertype = NULL;
fsinit(&fs);
while (tar_get_next_hdr(&fs)) {
use_hmac = 0;
wrote_file = 0;
if (fs.ftype == 'g') {
char *paxdatacpy = NULL;
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.version", &paxdata, &paxdatalen) == 0) {
struct key_st *keys;
char *esceprvkey = NULL;
char *escpubkey = NULL;
char *esccomment= NULL;
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.numkeys", &paxdata, &paxdatalen) == 0) {
strncpya0(&paxdatacpy, paxdata, paxdatalen);
numkeys = atoi(paxdatacpy);
}
else
numkeys = 1;
keys = malloc(sizeof(struct key_st) * numkeys);
for (int i = 0; i < numkeys; i++) {
keys[i].fingerprint = NULL;
keys[i].eprvkey = NULL;
keys[i].pubkey = NULL;
keys[i].hmac_hash_b64 = NULL;
keys[i].comment = NULL;
}
for (int i = 0; i < numkeys; i++) {
if (numkeys > 1) {
sprintf(paxhdr_varstring, "TC.pubkey.fingerprint.%d", i);
cpypaxvarstr(fs.xheader, fs.xheaderlen, paxhdr_varstring, &(keys[i].fingerprint));
sprintf(paxhdr_varstring, "TC.eprivkey.%d", i);
cpypaxvarstr(fs.xheader, fs.xheaderlen, paxhdr_varstring, &(keys[i].eprvkey));
sprintf(paxhdr_varstring, "TC.pubkey.%d", i);
cpypaxvarstr(fs.xheader, fs.xheaderlen, paxhdr_varstring, &(keys[i].pubkey));
sprintf(paxhdr_varstring, "TC.hmackeyhash.%d", i);
cpypaxvarstr(fs.xheader, fs.xheaderlen, paxhdr_varstring, &(keys[i].hmac_hash_b64));
sprintf(paxhdr_varstring, "TC.keyfile.comment.%d", i);
cpypaxvarstr(fs.xheader, fs.xheaderlen, paxhdr_varstring, &(keys[i].comment));
}
else {
cpypaxvarstr(fs.xheader, fs.xheaderlen, "TC.pubkey.fingerprint", &(keys[0].fingerprint));
cpypaxvarstr(fs.xheader, fs.xheaderlen, "TC.eprivkey", &(keys[0].eprvkey));
cpypaxvarstr(fs.xheader, fs.xheaderlen, "TC.pubkey",&(keys[0].pubkey));
cpypaxvarstr(fs.xheader, fs.xheaderlen, "TC.hmackeyhash", &(keys[0].hmac_hash_b64));
cpypaxvarstr(fs.xheader, fs.xheaderlen, "TC.keyfile.comment", &(keys[0].comment));
}
}
fprintf(out, "3\n");
for (int i = 0; i < numkeys; i++) {
fprintf(out, "0\t%d\t%s\t%s\t%s\t%s\t%s\t\n", i,
keys[i].fingerprint, stresc(keys[i].eprvkey, &esceprvkey), stresc(keys[i].pubkey, &escpubkey),
keys[i].hmac_hash_b64, stresc(keys[i].comment, &esccomment));
}
if (numkeys > 0) {
for (int i = 0; i < numkeys; i++) {
dfree(keys[i].comment);
dfree(keys[i].fingerprint);
dfree(keys[i].hmac_hash_b64);
dfree(keys[i].eprvkey);
dfree(keys[i].pubkey);
}
free(keys);
}
dfree(esceprvkey);
dfree(escpubkey);
dfree(esccomment);
}
dfree(paxdatacpy);
}
else if (fs.ftype == '5' && getpaxvar(fs.xheader, fs.xheaderlen, "TC.segmented.header",
&paxdata, &paxdatalen) == 0) {
sprintf(tmpfilepath, "%s/tbXXXXXX", tmpfiledir);
curtmpfile = mkstemp(tmpfilepath);
curfile = fdopen(curtmpfile, "w");
tsf = tarsplit_init_r(fread, stdin, numkeys);
if (ciphertype != NULL)
ciphertype[0] = '\0';
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.compression", &paxdata, &paxdatalen) == 0) {
strncata0(&ciphertype, paxdata, paxdatalen - 1);
}
strncata0(&ciphertype, "|", 1);
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.cipher", &paxdata, &paxdatalen) == 0) {
strncata0(&ciphertype, paxdata, paxdatalen - 1);
}
fprintf(curfile, "%s\n", ciphertype);
double curtime = ftime();
double lastupdate_time = curtime;
size_t tot_size = 0;
while ((c = tarsplit_read(databuf, 1, bufsize, tsf)) > 0) {
fwrite(databuf, 1, c, curfile);
tot_size += c;
if ((curtime = ftime()) > lastupdate_time + 1) {
fprintf(out, "2\t%s\t%lu\n", stresc(fs.filename, &escfname), tot_size);
}
}
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.cipher", &paxdata, &paxdatalen) == 0) {
for (int i = 0; i < numkeys; i++) {
if ((tsf->hmac[i])[0] != '\0') {
strncata0(&ciphertype, (char *) (tsf->hmac[i]), EVP_MAX_MD_SIZE * 2);
use_hmac = 1;
}
}
if (use_hmac == 1) {
unsigned char *tmphash;
strcpy((char *) hmac, (char *) (tmphash = sha256_hex(ciphertype)));
free(tmphash);
}
#if 0
if ((tsf->hmac[0])[0] != '\0') {
strncpy((char *) hmac, (char *) (tsf->hmac[0]), EVP_MAX_MD_SIZE * 2);
hmac[EVP_MAX_MD_SIZE * 2] = '\0';
if (hmac[strlen((char *) hmac) - 1] == '\n')
hmac[strlen((char *) hmac) - 1] = '\0';
use_hmac = 1;
}
#endif
if (numkeys > 1) {
for (int i = 0; i < numkeys; i++) {
sprintf(paxhdr_varstring, "TC.hmac.%d", i);
setpaxvar(&(fs.xheader), &(fs.xheaderlen), paxhdr_varstring, (char *) tsf->hmac[i], strlen((char *) tsf->hmac[i]));
}
}
else {
setpaxvar(&(fs.xheader), &(fs.xheaderlen), "TC.hmac", (char *) tsf->hmac[0], strlen((char *) tsf->hmac[0]));
}
}
if (escxheader == NULL)
escxheader = dmalloc(((int)((fs.xheaderlen + 2) / 3)) * 4 + 1);
else
if (dmalloc_size(escxheader) < ((int)((fs.xheaderlen + 2) / 3)) * 4 + 1)
escxheader = drealloc(escxheader, ((int)((fs.xheaderlen + 2) / 3)) * 4 + 1);
unsigned long long int filesize = fs.filesize;
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.original.size", &paxdata, &paxdatalen) == 0) {
filesize = strtoull(paxdata, 0, 10);
}
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.sparse.original.size", &paxdata, &paxdatalen) == 0) {
filesize = strtoull(paxdata, 0, 10);
}
fprintf(out, "1\t%c\t%4.4o\t%s\t%d\t%s\t%d\t%lld\t%s\t%lu\t%s\t%s\t%d\t%s",
'E', fs.mode, fs.auid, fs.nuid, fs.agid, fs.ngid, filesize,
use_hmac == 0 ? cfsha1x : hmac, fs.modtime, stresc(fs.filename, &escfname),
stresc(fs.linktarget == 0 ? "" : fs.linktarget, &esclname), fs.xheaderlen,
fs.xheaderlen == 0 ? "" : EncodeBlock2(escxheader, fs.xheader, fs.xheaderlen, NULL)
);
tarsplit_finalize_r(tsf);
if (fclose(curfile) == 0)
wrote_file = 1;
else {
fprintf(stderr, "Error writing file, aborting\n");
exit(1);
}
}
else if (fs.filesize > 0 || fs.n_sparsedata > 0) {
int is_ciphered = 0;
size_t (*c_fwrite)();
void *c_handle;
unsigned long long int filesize = fs.filesize;
sprintf(tmpfilepath, "%s/tbXXXXXX", tmpfiledir);
curtmpfile = mkstemp(tmpfilepath);
curfile = fdopen(curtmpfile, "w");
if (ciphertype != NULL)
ciphertype[0] = '\0';
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.compression", &paxdata, &paxdatalen) == 0) {
strncata0(&ciphertype, paxdata, paxdatalen - 1);
}
strncata0(&ciphertype, "|", 1);
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.cipher", &paxdata, &paxdatalen) == 0) {
strncata0(&ciphertype, paxdata, paxdatalen - 1);
is_ciphered = 1;
}
if (is_ciphered == 1)
fprintf(curfile, "%s\n", ciphertype);
sizeremaining = fs.filesize;
padding = 512 - ((fs.filesize - 1) % 512 + 1);
if (is_ciphered == 1) {
is_ciphered = 1;
if (numkeys > 1)
for (int i = 0; i < numkeys; i++) {
sprintf(paxhdr_varstring, "TC.hmac.%d", i);
if (getpaxvar(fs.xheader, fs.xheaderlen, paxhdr_varstring, &paxdata, &paxdatalen) == 0) {
strncata0(&ciphertype, paxdata, paxdatalen - 1);
use_hmac = 1;
}
}
else {
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.hmac", &paxdata, &paxdatalen) == 0) {
strncata0(&ciphertype, paxdata, paxdatalen - 1);
use_hmac = 1;
}
}
if (use_hmac == 1) {
unsigned char *tmphash;
strcpy((char *) hmac, (char *) (tmphash = sha256_hex(ciphertype)));
free(tmphash);
}
}
if (config.hash == 1)
s1f = sha_file_init_w(fwrite, curfile, 1);
else if (config.hash == 2)
s1f = sha_file_init_w(fwrite, curfile, 2);
else {
fprintf(stderr, "Couldn't determine hash type %d\n", config.hash);
exit(1);
}
c_fwrite = sha_file_write;
c_handle = s1f;
if (use_hmac == 0) {
lzf = lzop_init_w(sha_file_write, s1f);
c_fwrite = lzop_write;
c_handle = lzf;
}
if (fs.n_sparsedata > 0) {
int stlen;
if (sparsetext != NULL)
sparsetext[0] = '\0';
stlen = gen_sparse_data_string(&fs, &sparsetext);
c_fwrite(sparsetext, 1, stlen, c_handle);
filesize = fs.sparse_realsize;
}
double curtime = ftime();
double lastupdate_time = curtime;
size_t tot_size = 0;
while (sizeremaining > 0) {
c = fread(databuf, 1, sizeremaining < bufsize ? sizeremaining : bufsize, stdin);
c_fwrite(databuf, 1, c, c_handle);
sizeremaining -= c;
tot_size += c;
if ((curtime = ftime()) > lastupdate_time + 1) {
fprintf(out, "2\t%s\t%lu\n", stresc(fs.filename, &escfname), tot_size);
}
}
if (use_hmac == 0)
lzop_finalize_w(lzf);
if (config.hash == 1) {
sha_finalize_w(s1f, cfsha1);
encode_block_16(cfsha1x, cfsha1, SHA_DIGEST_LENGTH);
cfshax = cfsha1x;
} else if (config.hash == 2) {
sha_finalize_w(s1f, cfsha2);
encode_block_16(cfsha2x, cfsha2, SHA256_DIGEST_LENGTH);
cfshax = cfsha2x;
cfsha2x[40] = '\0';
}
else {
fprintf(stderr, "Error in determining hash type\n");
exit(1);
}
if (fclose(curfile) == 0)
wrote_file = 1;
else {
fprintf(stderr, "Error writing file, aborting\n");
exit(1);
}
while (padding > 0)
padding -= fread(databuf, 1, padding < bufsize ? padding : bufsize, stdin);
if (escxheader == NULL)
escxheader = dmalloc(((int)((fs.xheaderlen + 2) / 3)) * 4 + 1);
else
if (dmalloc_size(escxheader) < ((int)((fs.xheaderlen + 2) / 3)) * 4 + 1)
escxheader = drealloc(escxheader, ((int)((fs.xheaderlen + 2) / 3)) * 4 + 1);
if (is_ciphered == 1) {
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.original.size", &paxdata, &paxdatalen) == 0) {
filesize = strtoull(paxdata, 0, 10);
}
if (getpaxvar(fs.xheader, fs.xheaderlen, "TC.sparse.original.size", &paxdata, &paxdatalen) == 0) {
filesize = strtoull(paxdata, 0, 10);
}
}
fprintf(out, "1\t%c\t%4.4o\t%s\t%d\t%s\t%d\t%lld\t%s\t%lu\t%s\t%s\t%d\t%s",
is_ciphered == 1 ? 'E' : fs.n_sparsedata > 0 ? 'S' : fs.ftype, fs.mode,
fs.auid, fs.nuid, fs.agid, fs.ngid, filesize, use_hmac == 0 ? cfshax : hmac,
fs.modtime, stresc(fs.filename, &escfname),
stresc(fs.linktarget == 0 ? "" : fs.linktarget, &esclname), fs.xheaderlen,
fs.xheaderlen == 0 ? "" : EncodeBlock2(escxheader, fs.xheader, fs.xheaderlen, NULL)
);
wrote_file = 1;
}
else {
if (escxheader == NULL)
escxheader = dmalloc(((int)((fs.xheaderlen + 2) / 3)) * 4 + 1);
else
if (dmalloc_size(escxheader) < ((int)((fs.xheaderlen + 2) / 3)) * 4 + 1)
escxheader = drealloc(escxheader, ((int)((fs.xheaderlen + 2) / 3)) * 4 + 1);
if (fs.ftype == '5' && strlen(fs.filename) > 0 && fs.filename[strlen(fs.filename) - 1] == '/') {
fs.filename[strlen(fs.filename) - 1] = '\0';
}
fprintf(out, "1\t%c\t%4.4o\t%s\t%d\t%s\t%d\t%lld\t%s\t%lu\t%s\t%s\t%d\t%s\n",
fs.ftype, fs.mode, fs.auid, fs.nuid, fs.agid, fs.ngid,
fs.filesize, "0", fs.modtime, stresc(fs.filename, &escfname),
stresc(fs.linktarget == 0 ? "" : fs.linktarget, &esclname), fs.xheaderlen,
fs.xheaderlen == 0 ? "" : EncodeBlock2(escxheader, fs.xheader, fs.xheaderlen, NULL)
);
}
if (wrote_file == 1) {
if (use_hmac == 0) {
strncpy(destdir2, (char *) cfshax, 2);
destdir2[2] = '\0';
snprintf(targetdir, 1024, "%s/%s", destdir, destdir2);
snprintf(targetpath, 1024, "%s/%s/%s.lzo", destdir, destdir2, cfshax + 2);
}
else {
strncpy(destdir2, (char *) hmac, 2);
destdir2[2] = '\0';
snprintf(targetdir, 1024, "%s/%s", destdir, destdir2);
snprintf(targetpath, 1024, "%s/%s/%s.enc", destdir, destdir2, hmac + 2);
}
if (stat(targetdir, &tmpfstat) != 0) {
if (mkdir(targetdir, 0770) != 0) {
if (stat(targetdir, &tmpfstat) != 0) {
fprintf(stderr, "Error creating directory %s\n", targetdir);
exit(1);
}
}
}
if (stat(targetpath, &tmpfstat) != 0 || utime(targetpath, NULL) != 0) {
if (rename(tmpfilepath, targetpath) == 0) {
}
else {
fprintf(stderr, "Error moving file to vault, aborting\n");
exit(1);
}
}
else {
unlink(tmpfilepath);
}
fprintf(out, "\n");
}
fsclear(&fs);
}
fsfree(&fs);
if (escfname != NULL)
stresc_free(&escfname);
if (esclname != NULL)
stresc_free(&esclname);
dfree(escxheader);
fflush(out);
fclose(out);
close(out_h);
free(config.vault);
free(config.meta);
dfree(ciphertype);
dfree(sparsetext);
exit(0);
}
else {
close(out_h);
}
return(0);
}
int pipebuf(int *in, int *out)
{
int pipein[2];
int pipeout[2];
pid_t child;
if (*in < 0)
if (pipe(pipein) < 0) {
fprintf(stderr, "Pipe error\n");
exit(1);
}
if (*out < 0)
if (pipe(pipeout) < 0) {
fprintf(stderr, "Pipe error\n");
exit(1);
}
if ((child = fork()) > 0) {
if (*in < 0) {
close(pipein[0]);
*in = pipein[1];
}
if (*out < 0) {
close(pipeout[1]);
*out = pipeout[0];
}
return(0);
}
else {
struct ringbuf *r;
struct timeval s_tm;
int bufsize = 4096;
char buf[bufsize];
ssize_t n;
ssize_t o;
int ateof = 0;
fclose(stdout);
if (*in < 0)
close(pipein[1]);
else
pipein[0] = *in;
if (*out < 0)
close(pipeout[0]);
else
pipeout[1] = *out;
r = rbinit(1024 * 1024 * 1024);
fd_set s_in;
fd_set s_out;
free(config.vault);
free(config.meta);
// fcntl(pipein[0], F_SETFL, O_NONBLOCK);
// fcntl(pipeout[1], F_SETFL, O_NONBLOCK);
while (1) {
if (rbused(r) == 0 && ateof == 1) {
rbfree(r);
exit(0);
}
// if the buffer is empty, then wait for input and see if output will block
if (rbused(r) == 0 && ateof == 0) {
FD_ZERO(&s_in);
FD_SET(pipein[0], &s_in);
select(1024, &s_in, NULL, NULL, NULL);
s_tm.tv_sec = 0;
s_tm.tv_usec = 0;
FD_ZERO(&s_out);
FD_SET(pipeout[1], &s_out);
select(1024, NULL, &s_out, NULL, &s_tm);
n = read(pipein[0], buf, bufsize);
if (n <= 0) {
ateof = 1;
}
if (FD_ISSET(pipeout[1], &s_out)) {
o = write(pipeout[1], buf, n);
if (o < n) {
fprintf(stderr, "Short write a of %lu, wanted %lu, putting %lu bytes back in buffer\n", o, n, n - o);
rbrewind(r, n - o);
}
}
else {
rbwrite(buf, 1, n, r);
}
}
// if there is room in the buffer, wait for either input or output
else if (rbavail(r) > bufsize && ateof == 0) {
FD_ZERO(&s_in);
FD_SET(pipein[0], &s_in);
FD_ZERO(&s_out);
FD_SET(pipeout[1], &s_out);
select(1024, &s_in, &s_out, NULL, NULL);
// flush ring buffer until output blocks
while (FD_ISSET(pipeout[1], &s_out) && rbused(r) > 0) {
n = rbread(buf, 1, bufsize, r);
if (n <= 0)
fprintf(stderr, "Error 1 -- n is %lu\n", n);
o = write(pipeout[1], buf, n);
// if not all written, put remainder back in ring buffer
if (o < n) {
fprintf(stderr, "Short write b of %lu, wanted %lu, putting %lu bytes back in buffer\n", o, n, n - o);
rbrewind(r, n - o);
}
s_tm.tv_sec = 0;
s_tm.tv_usec = 0;
FD_ZERO(&s_out);
FD_SET(pipeout[1], &s_out);
select(1024, NULL, &s_out, NULL, &s_tm);
}
if (ateof == 0) {
n = read(pipein[0], buf, bufsize);
if (n <= 0) {
ateof = 1;
}
if (rbused(r) == 0) {
o = write(pipeout[1], buf, n);
if (o < n) {
fprintf(stderr, "Short write c of %lu, wanted %lu, putting %lu bytes back in buffer\n", o, n, n - o);
rbrewind(r, n - o);
}
}
else {
rbwrite(buf, 1, n, r);
}
}
}
// otherwise, buffer is full, wait for output
else {
FD_ZERO(&s_out);