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sqlfscat.c
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sqlfscat.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "sqlfs.h"
#define BUF_SIZE 8192
int main(int argc, char *argv[])
{
int n;
char buf[BUF_SIZE];
struct stat s;
sqlfs_t *sqlfs = 0;
if (argc != 3)
{
fprintf(stderr, "Usage: %s sqlfs.db /path/to/file/to/cat\n", argv[0]);
exit(1);
}
const char *db = argv[1];
const char *file = argv[2];
/* first setup the database file */
if(access(db, R_OK))
{
fprintf(stderr, "sqlfs file is not readable! (%s)\n", db);
exit(1);
}
if(stat(db, &s) < 0)
{
fprintf(stderr, "stat on %s failed!\n", db);
exit(1);
}
if (S_ISREG(s.st_mode))
{
fprintf(stderr, "Not a regular file: %s\n", db);
exit(1);
}
#ifdef HAVE_LIBSQLCIPHER
/* get the password from stdin */
char password[BUF_SIZE];
char *p = fgets(password, BUF_SIZE, stdin);
if (p)
{
/* remove trailing newline */
size_t last = strlen(p) - 1;
if (p[last] == '\n')
p[last] = '\0';
if (!sqlfs_open_password(db, password, &sqlfs)) {
fprintf(stderr, "Failed to open: %s\n", db);
return 1;
}
sqlfs_init_password(db, password);
memset(password, 0, BUF_SIZE); // zero out password
}
else
#endif /* HAVE_LIBSQLCIPHER */
{
if (!sqlfs_open(db, &sqlfs)) {
fprintf(stderr, "Failed to open: %s\n", db);
return 1;
}
sqlfs_init(db);
}
if (!sqlfs_proc_access(sqlfs, file, R_OK)) {
fprintf(stderr, "Cannot access %s in %s\n", file, db);
//return 1;
}
/* now read the file from sqlfs */
struct fuse_file_info ffi;
int wrote = 0; // this is used to track were we are in the read
sqlfs_proc_open(sqlfs, file, &ffi);
while((n = sqlfs_proc_read(sqlfs, file, buf, BUF_SIZE, wrote, &ffi)) > 0)
{
wrote += fwrite(buf, sizeof(char), n, stdout);
}
sqlfs_close(sqlfs);
// TODO return proper exit value
return 0;
}