int cli_scannulsft(cli_ctx *ctx, off_t offset) {
int ret;
struct nsis_st nsist;
cli_dbgmsg("in scannulsft()\n");
memset(&nsist, 0, sizeof(struct nsis_st));
nsist.off = offset;
if (!(nsist.dir = cli_gentemp(ctx->engine->tmpdir)))
return CL_ETMPDIR;
if(mkdir(nsist.dir, 0700)) {
cli_dbgmsg("NSIS: Can't create temporary directory %s\n", nsist.dir);
free(nsist.dir);
return CL_ETMPDIR;
}
nsist.map = *ctx->fmap;
if(ctx->engine->keeptmp) cli_dbgmsg("NSIS: Extracting files to %s\n", nsist.dir);
do {
ret = cli_nsis_unpack(&nsist, ctx);
if (ret == CL_SUCCESS && nsist.opened == 0) {
/* Don't scan a non-existent file */
continue;
}
if (ret == CL_SUCCESS) {
cli_dbgmsg("NSIS: Successully extracted file #%u\n", nsist.fno);
if (lseek(nsist.ofd, 0, SEEK_SET) == -1) {
cli_dbgmsg("NSIS: call to lseek() failed\n");
free(nsist.dir);
return CL_ESEEK;
}
if(nsist.fno == 1)
ret=cli_scandesc(nsist.ofd, ctx, 0, 0, NULL, AC_SCAN_VIR, NULL);
else
ret=cli_magic_scandesc(nsist.ofd, ctx);
close(nsist.ofd);
if(!ctx->engine->keeptmp)
if(cli_unlink(nsist.ofn)) ret = CL_EUNLINK;
} else if(ret == CL_EMAXSIZE) {
ret = nsist.solid ? CL_BREAK : CL_SUCCESS;
}
} while(ret == CL_SUCCESS);
if(ret == CL_BREAK || ret == CL_EMAXFILES)
ret = CL_CLEAN;
nsis_shutdown(&nsist);
if(!ctx->engine->keeptmp)
cli_rmdirs(nsist.dir);
free(nsist.dir);
return ret;
}
int cli_scannulsft(int desc, cli_ctx *ctx, off_t offset) {
int ret;
struct nsis_st nsist;
cli_dbgmsg("in scannulsft()\n");
if(ctx->limits && ctx->limits->maxreclevel && ctx->arec >= ctx->limits->maxreclevel) {
cli_dbgmsg("Archive recursion limit exceeded (arec == %u).\n", ctx->arec+1);
return CL_EMAXREC;
}
memset(&nsist, 0, sizeof(struct nsis_st));
nsist.ifd = desc;
nsist.off = offset;
if (!(nsist.dir = cli_gentemp(NULL)))
return CL_ETMPDIR;
if(mkdir(nsist.dir, 0700)) {
cli_dbgmsg("NSIS: Can't create temporary directory %s\n", nsist.dir);
free(nsist.dir);
return CL_ETMPDIR;
}
if(cli_leavetemps_flag) cli_dbgmsg("NSIS: Extracting files to %s\n", nsist.dir);
ctx->arec++;
do {
ret = cli_nsis_unpack(&nsist, ctx);
if(ret != CL_SUCCESS) {
if(ret == CL_EMAXSIZE) {
if(BLOCKMAX) {
*ctx->virname = "NSIS.ExceededFileSize";
ret=CL_VIRUS;
} else {
ret = nsist.solid ? CL_BREAK : CL_SUCCESS;
}
}
} else {
cli_dbgmsg("NSIS: Successully extracted file #%u\n", nsist.fno);
lseek(nsist.ofd, 0, SEEK_SET);
if(nsist.fno == 1)
ret=cli_scandesc(nsist.ofd, ctx, 0, 0, 0, NULL);
else
ret=cli_magic_scandesc(nsist.ofd, ctx);
close(nsist.ofd);
if(!cli_leavetemps_flag)
unlink(nsist.ofn);
}
} while(ret == CL_SUCCESS);
if(ret == CL_BREAK)
ret = CL_CLEAN;
cli_nsis_free(&nsist);
if(!cli_leavetemps_flag)
cli_rmdirs(nsist.dir);
free(nsist.dir);
ctx->arec--;
return ret;
}
