Synchronet now requires the libarchive development package (e.g. libarchive-dev on Debian-based Linux distros, libarchive.org for more info) to build successfully.

filedat.c 37 KB
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/* Synchronet file database-related exported functions */

/****************************************************************************
 * @format.tab-size 4		(Plain Text/Source Code File Header)			*
 * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
 *																			*
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 * Copyright Rob Swindell - http://www.synchro.net/copyright.html			*
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 *																			*
 * This program is free software; you can redistribute it and/or			*
 * modify it under the terms of the GNU General Public License				*
 * as published by the Free Software Foundation; either version 2			*
 * of the License, or (at your option) any later version.					*
 * See the GNU General Public License for more details: gpl.txt or			*
 * http://www.fsf.org/copyleft/gpl.html										*
 *																			*
 * For Synchronet coding style and modification guidelines, see				*
 * http://www.synchro.net/source.html										*
 *																			*
 * Note: If this box doesn't appear square, then you need to fix your tabs.	*
 ****************************************************************************/

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#include "filedat.h"
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#include "userdat.h"
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#include "dat_rec.h"
#include "datewrap.h"	// time32()
#include "str_util.h"
#include "nopen.h"
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#include "smblib.h"
#include "load_cfg.h"	// smb_open_dir()
#include "scfglib.h"
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#include "sauce.h"
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#include "crc32.h"
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/* libarchive: */
#include <archive.h>
#include <archive_entry.h>
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 /****************************************************************************/
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/****************************************************************************/
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bool findfile(scfg_t* cfg, uint dirnum, const char *filename, file_t* file)
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{
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	smb_t smb;
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	if(cfg == NULL || filename == NULL)
		return false;
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	if(!smb_init_dir(cfg, &smb, dirnum))
		return false;
	if(smb_open_index(&smb) != SMB_SUCCESS)
		return false;
	int result = smb_findfile(&smb, filename, file);
	smb_close(&smb);
	return result == SMB_SUCCESS;
}
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// This function may be called without opening the file base (for fast new-scans)
time_t newfiletime(smb_t* smb)
{
	char str[MAX_PATH + 1];
	SAFEPRINTF(str, "%s.sid", smb->file);
	return fdate(str);
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}

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time_t dir_newfiletime(scfg_t* cfg, uint dirnum)
{
	smb_t smb;

	if(!smb_init_dir(cfg, &smb, dirnum))
		return -1;
	return newfiletime(&smb);
}

// This function may be called without opening the file base (for fast new-scans)
bool newfiles(smb_t* smb, time_t t)
{
	return newfiletime(smb) > t;
}

// This function *must* be called with file base closed
bool update_newfiletime(smb_t* smb, time_t t)
{
	char path[MAX_PATH + 1];
	SAFEPRINTF(path, "%s.sid", smb->file);
	return setfdate(path, t) == 0;
}

time_t lastfiletime(smb_t* smb)
{
	idxrec_t idx;
	if(smb_getlastidx(smb, &idx) != SMB_SUCCESS)
		return (time_t)-1;
	return idx.time;
}

static int filename_compare_a(const void *arg1, const void *arg2)
{
   return stricmp(*(char**) arg1, *(char**) arg2);
}

static int filename_compare_d(const void *arg1, const void *arg2)
{
   return stricmp(*(char**) arg2, *(char**) arg1);
}

static int filename_compare_ac(const void *arg1, const void *arg2)
{
   return strcmp(*(char**) arg1, *(char**) arg2);
}

static int filename_compare_dc(const void *arg1, const void *arg2)
{
   return strcmp(*(char**) arg2, *(char**) arg1);
}

// Note: does not support sorting by date
void sortfilenames(str_list_t filelist, size_t count, enum file_sort order)
{
	switch(order) {
		case FILE_SORT_NAME_A:
			qsort(filelist, count, sizeof(*filelist), filename_compare_a);
			break;
		case FILE_SORT_NAME_D:
			qsort(filelist, count, sizeof(*filelist), filename_compare_d);
			break;
		case FILE_SORT_NAME_AC:
			qsort(filelist, count, sizeof(*filelist), filename_compare_ac);
			break;
		case FILE_SORT_NAME_DC:
			qsort(filelist, count, sizeof(*filelist), filename_compare_dc);
			break;
		default:
			break;
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	}
}

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// Return an optionally-sorted dynamically-allocated string list of filenames added since date/time (t)
// Note: does not support sorting by date (exception: natural sort order of date-ascending)
str_list_t loadfilenames(smb_t* smb, const char* filespec, time_t t, enum file_sort order, size_t* count)
{
	size_t count_;

	if(count == NULL)
		count = &count_;

	*count = 0;

	long start = 0;	
	if(t > 0) {
		idxrec_t idx;
		start = smb_getmsgidx_by_time(smb, &idx, t);
		if(start < 0)
			return NULL;
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	}
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	char** file_list = calloc(smb->status.total_files + 1, sizeof(char*));
	if(file_list == NULL)
		return NULL;

	fseek(smb->sid_fp, start * sizeof(fileidxrec_t), SEEK_SET);
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	size_t offset = start;
	while(!feof(smb->sid_fp) && offset < smb->status.total_files) {
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		fileidxrec_t fidx;

		if(smb_fread(smb, &fidx, sizeof(fidx), smb->sid_fp) != sizeof(fidx))
			break;

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		offset++;

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		if(fidx.idx.number == 0)	/* invalid message number, ignore */
			continue;

		TERMINATE(fidx.name);

		if(filespec != NULL && *filespec != '\0') {
			if(!wildmatch(fidx.name, filespec, /* path: */false, /* case-sensitive: */false))
				continue;
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		}
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		file_list[*count] = strdup(fidx.name);
		(*count)++;
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	}
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	if(order != FILE_SORT_NATURAL)
		sortfilenames(file_list, *count, order);
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	return file_list;
}
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// Load and optionally-sort files from an open filebase into a dynamically-allocated list of "objects"
file_t* loadfiles(smb_t* smb, const char* filespec, time_t t, enum file_detail detail, enum file_sort order, size_t* count)
{
	*count = 0;

	long start = 0;	
	if(t) {
		idxrec_t idx;
		start = smb_getmsgidx_by_time(smb, &idx, t);
		if(start < 0)
			return NULL;
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	}
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	file_t* file_list = calloc(smb->status.total_files, sizeof(file_t));
	if(file_list == NULL)
		return NULL;

	fseek(smb->sid_fp, start * sizeof(fileidxrec_t), SEEK_SET);
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	size_t offset = start;
	size_t cnt = 0;
	while(!feof(smb->sid_fp) && offset < smb->status.total_files) {
		file_t* f = &file_list[cnt];
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		if(smb_fread(smb, &f->file_idx, sizeof(f->file_idx), smb->sid_fp) != sizeof(f->file_idx))
			break;

		f->idx_offset = offset++;

		if(f->idx.number == 0)	/* invalid message number, ignore */
			continue;

		TERMINATE(f->file_idx.name);

		if(filespec != NULL && *filespec != '\0') {
			if(!wildmatch(f->file_idx.name, filespec, /* path: */false, /* case-sensitive: */false))
				continue;
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		}
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		cnt++;
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	}
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	if(order != FILE_SORT_NATURAL)
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		sortfiles(file_list, cnt, order);
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	// Read (and set convenience pointers) *after* sorting the list
	for((*count) = 0; (*count) < cnt; (*count)++) {
		int result = smb_getfile(smb, &file_list[*count], detail);
		if(result != SMB_SUCCESS)
			break;
	}
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	return file_list;
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}

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static int file_compare_name_a(const void* v1, const void* v2)
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{
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	file_t* f1 = (file_t*)v1;
	file_t* f2 = (file_t*)v2;
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	return stricmp(f1->file_idx.name, f2->file_idx.name);
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}

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static int file_compare_name_ac(const void* v1, const void* v2)
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{
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	file_t* f1 = (file_t*)v1;
	file_t* f2 = (file_t*)v2;
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	return strcmp(f1->file_idx.name, f2->file_idx.name);
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}

static int file_compare_name_d(const void* v1, const void* v2)
{
	file_t* f1 = (file_t*)v1;
	file_t* f2 = (file_t*)v2;

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	return stricmp(f2->file_idx.name, f1->file_idx.name);
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}

static int file_compare_name_dc(const void* v1, const void* v2)
{
	file_t* f1 = (file_t*)v1;
	file_t* f2 = (file_t*)v2;

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	return strcmp(f2->file_idx.name, f1->file_idx.name);
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}

static int file_compare_date_a(const void* v1, const void* v2)
{
	file_t* f1 = (file_t*)v1;
	file_t* f2 = (file_t*)v2;

	return f1->hdr.when_imported.time - f2->hdr.when_imported.time;
}

static int file_compare_date_d(const void* v1, const void* v2)
{
	file_t* f1 = (file_t*)v1;
	file_t* f2 = (file_t*)v2;

	return f2->hdr.when_imported.time - f1->hdr.when_imported.time;
}

void sortfiles(file_t* filelist, size_t count, enum file_sort order)
{
	switch(order) {
		case FILE_SORT_NAME_A:
			qsort(filelist, count, sizeof(*filelist), file_compare_name_a);
			break;
		case FILE_SORT_NAME_D:
			qsort(filelist, count, sizeof(*filelist), file_compare_name_d);
			break;
		case FILE_SORT_NAME_AC:
			qsort(filelist, count, sizeof(*filelist), file_compare_name_ac);
			break;
		case FILE_SORT_NAME_DC:
			qsort(filelist, count, sizeof(*filelist), file_compare_name_dc);
			break;
		case FILE_SORT_DATE_A:
			qsort(filelist, count, sizeof(*filelist), file_compare_date_a);
			break;
		case FILE_SORT_DATE_D:
			qsort(filelist, count, sizeof(*filelist), file_compare_date_d);
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			break; 
	}
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}
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void freefiles(file_t* filelist, size_t count)
{
	for(size_t i = 0; i < count; i++)
		smb_freefilemem(&filelist[i]);
	free(filelist);
}
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bool loadfile(scfg_t* cfg, uint dirnum, const char* filename, file_t* file, enum file_detail detail)
{
	smb_t smb;
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	if(smb_open_dir(cfg, &smb, dirnum) != SMB_SUCCESS)
		return false;
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	int result = smb_loadfile(&smb, filename, file, detail);
	smb_close(&smb);
	if(cfg->dir[dirnum]->misc & DIR_FREE)
		file->cost = 0;
	return result == SMB_SUCCESS;
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}

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char* batch_list_name(scfg_t* cfg, uint usernumber, enum XFER_TYPE type, char* fname, size_t size)
{
	safe_snprintf(fname, size, "%suser/%04u.%sload", cfg->data_dir, usernumber
		,(type == XFER_UPLOAD || type == XFER_BATCH_UPLOAD) ? "up" : "dn");
	return fname;
}
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FILE* batch_list_open(scfg_t* cfg, uint usernumber, enum XFER_TYPE type, bool create)
{
	char path[MAX_PATH + 1];
	return iniOpenFile(batch_list_name(cfg, usernumber, type, path, sizeof(path)), create);
}

str_list_t batch_list_read(scfg_t* cfg, uint usernumber, enum XFER_TYPE type)
{
	FILE* fp = batch_list_open(cfg, usernumber, type, /* create: */false);
	if(fp == NULL)
		return NULL;
	str_list_t ini = iniReadFile(fp);
	iniCloseFile(fp);
	return ini;
}

bool batch_list_write(scfg_t* cfg, uint usernumber, enum XFER_TYPE type, str_list_t list)
{
	FILE* fp = batch_list_open(cfg, usernumber, type, /* create: */true);
	if(fp == NULL)
		return false;
	bool result = iniWriteFile(fp, list);
	iniCloseFile(fp);
	return result;
}

bool batch_list_clear(scfg_t* cfg, uint usernumber, enum XFER_TYPE type)
{
	char path[MAX_PATH + 1];
	return remove(batch_list_name(cfg, usernumber, type, path, sizeof(path))) == 0;
}

size_t batch_file_count(scfg_t* cfg, uint usernumber, enum XFER_TYPE type)
{
	FILE* fp = batch_list_open(cfg, usernumber, type, /* create: */false);
	if(fp == NULL)
		return 0;
	size_t result = iniReadSectionCount(fp, /* prefix: */NULL);
	iniCloseFile(fp);
	return result;
}

bool batch_file_remove(scfg_t* cfg, uint usernumber, enum XFER_TYPE type, const char* filename)
{
	FILE* fp = batch_list_open(cfg, usernumber, type, /* create: */false);
	if(fp == NULL)
		return false;
	str_list_t ini = iniReadFile(fp);
	bool result = iniRemoveSection(&ini, filename);
	iniWriteFile(fp, ini);
	iniCloseFile(fp);
	iniFreeStringList(ini);
	return result;
}

bool batch_file_exists(scfg_t* cfg, uint usernumber, enum XFER_TYPE type, const char* filename)
{
	FILE* fp = batch_list_open(cfg, usernumber, type, /* create: */false);
	if(fp == NULL)
		return false;
	str_list_t ini = iniReadFile(fp);
	bool result = iniSectionExists(ini, filename);
	iniCloseFile(fp);
	iniFreeStringList(ini);
	return result;
}

bool batch_file_add(scfg_t* cfg, uint usernumber, enum XFER_TYPE type, file_t* f)
{
	FILE* fp = batch_list_open(cfg, usernumber, type, /* create: */true);
	if(fp == NULL)
		return false;
	fseek(fp, 0, SEEK_END);
	fprintf(fp, "\n[%s]\n", f->name);
	if(f->dir >= 0 && f->dir < cfg->total_dirs)
		fprintf(fp, "dir=%s\n", cfg->dir[f->dir]->code);
	if(f->desc != NULL)
		fprintf(fp, "desc=%s\n", f->desc);
	if(f->tags != NULL)
		fprintf(fp, "tags=%s\n", f->tags);
	fclose(fp);
	return true;
}

bool batch_file_get(scfg_t* cfg, str_list_t ini, const char* filename, file_t* f)
{
	char* p;
	char value[INI_MAX_VALUE_LEN + 1];

	if(!iniSectionExists(ini, filename))
		return false;
	f->dir = batch_file_dir(cfg, ini, filename);
	if(f->dir < 0 || f->dir >= cfg->total_dirs)
		return false;
	smb_hfield_str(f, SMB_FILENAME, filename);
	if((p = iniGetString(ini, filename, "desc", NULL, value)) != NULL)
		smb_hfield_str(f, SMB_FILEDESC, p);
	if((p = iniGetString(ini, filename, "tags", NULL, value)) != NULL)
		smb_hfield_str(f, SMB_TAGS, p);
	return true;
}

int batch_file_dir(scfg_t* cfg, str_list_t ini, const char* filename)
{
	char value[INI_MAX_VALUE_LEN + 1];
	return getdirnum(cfg, iniGetString(ini, filename, "dir", NULL, value));
}

bool batch_file_load(scfg_t* cfg, str_list_t ini, const char* filename, file_t* f)
{
	if(!iniSectionExists(ini, filename))
		return false;
	f->dir = batch_file_dir(cfg, ini, filename);
	if(f->dir < 0)
		return false;
	return loadfile(cfg, f->dir, filename, f, file_detail_normal);
}

bool updatefile(scfg_t* cfg, file_t* file)
{
	smb_t smb;

	if(smb_open_dir(cfg, &smb, file->dir) != SMB_SUCCESS)
		return false;

	int result = smb_updatemsg(&smb, file) == SMB_SUCCESS;
	smb_close(&smb);
	return result == SMB_SUCCESS;
}

bool removefile(scfg_t* cfg, uint dirnum, const char* filename)
{
	smb_t smb;

	if(smb_open_dir(cfg, &smb, dirnum) != SMB_SUCCESS)
		return false;

	int result;
	file_t file;
	if((result = smb_loadfile(&smb, filename, &file, file_detail_normal)) == SMB_SUCCESS) {
		result = smb_removefile(&smb, &file);
		smb_freefilemem(&file);
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	}
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	smb_close(&smb);
	return result == SMB_SUCCESS;
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}

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ulong getuserxfers(scfg_t* cfg, const char* from, uint to)
{
	smb_t smb;
	ulong found = 0;

	if(cfg == NULL)
		return 0;
	if(cfg->user_dir >= cfg->total_dirs)
		return 0;

	if(smb_open_dir(cfg, &smb, cfg->user_dir) != SMB_SUCCESS)
		return 0;

	char usernum[16];
	SAFEPRINTF(usernum, "%u", to);
	size_t count = 0;
	file_t* list = loadfiles(&smb, /* filespec */ NULL, /* since: */0, file_detail_normal, FILE_SORT_NATURAL, &count);
	for(size_t i = 0; i < count; i++) {
		file_t* f = &list[i];
		if(from != NULL && (f->from == NULL || stricmp(f->from, from) != 0))
			continue;
		if(to != 0) {
			str_list_t dest_user_list = strListSplitCopy(NULL, f->to_list, ",");
			int dest_user = strListFind(dest_user_list, usernum, /* case-sensitive: */true);
			strListFree(&dest_user_list);
			if(dest_user < 0)
				continue;
		}
		found++;
	}

	smb_close(&smb);
	freefiles(list, count);
	return found;
}

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/****************************************************************************/
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/* Returns full (case-corrected) path to specified file						*/
/* 'path' should be MAX_PATH + 1 chars in size								*/
/* If the directory is configured to allow file-checking and the file does	*/
/* not exist, the size element is set to -1.								*/
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/****************************************************************************/
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char* getfilepath(scfg_t* cfg, file_t* f, char* path)
{
	bool fchk = true;
	const char* name = f->name == NULL ? f->file_idx.name : f->name;
	if(f->dir >= cfg->total_dirs)
		safe_snprintf(path, MAX_PATH, "%s%s", cfg->temp_dir, name);
	else {
		safe_snprintf(path, MAX_PATH, "%s%s", cfg->dir[f->dir]->path, name);
		fchk = (cfg->dir[f->dir]->misc & DIR_FCHK) != 0;
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	}
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	if(f->size == 0 && fchk && !fexistcase(path))
		f->size = -1;
	return path;
}

off_t getfilesize(scfg_t* cfg, file_t* f)
{
	char fpath[MAX_PATH + 1];
	if(f->size > 0)
		return f->size;
	f->size = flength(getfilepath(cfg, f, fpath));
	return f->size;
}

time_t getfiletime(scfg_t* cfg, file_t* f)
{
	char fpath[MAX_PATH + 1];
	if(f->time > 0)
		return f->time;
	f->time = fdate(getfilepath(cfg, f, fpath));
	return f->time;
}

ulong gettimetodl(scfg_t* cfg, file_t* f, uint rate_cps)
{
	if(getfilesize(cfg, f) < 1)
		return 0;
	if(f->size <= (off_t)rate_cps)
		return 1;
	return (ulong)(f->size / rate_cps);
}

bool hashfile(scfg_t* cfg, file_t* f)
{
	bool result = false;
	smb_t smb;

	if(cfg->dir[f->dir]->misc & DIR_NOHASH)
		return false;

	if(smb_open_dir(cfg, &smb, f->dir) != SMB_SUCCESS)
		return false;

	if(!(smb.status.attr & SMB_NOHASH)) {
		char fpath[MAX_PATH + 1];
		getfilepath(cfg, f, fpath);
		if((f->file_idx.hash.flags = smb_hashfile(fpath, getfilesize(cfg, f), &f->file_idx.hash.data)) != 0)
			result = true;
	}
	smb_close(&smb);
	return result;
}

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int file_client_hfields(file_t* f, client_t* client)
{
	int		i;

	if(client == NULL)
		return -1;

	if(*client->addr && (i = smb_hfield_str(f, SENDERIPADDR, client->addr)) != SMB_SUCCESS)
		return i;
	if(*client->host && (i = smb_hfield_str(f, SENDERHOSTNAME, client->host)) != SMB_SUCCESS)
		return i;
	if(client->protocol != NULL && (i = smb_hfield_str(f, SENDERPROTOCOL, client->protocol)) != SMB_SUCCESS)
		return i;
	if(client->port) {
		char	port[16];
		SAFEPRINTF(port,"%u",client->port);
		return smb_hfield_str(f, SENDERPORT, port);
	}
	return SMB_SUCCESS;
}

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int file_sauce_hfields(file_t* f, struct sauce_charinfo* info)
{
	int		i;

	if(info == NULL)
		return -1;

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	if(*info->author && (i = smb_new_hfield_str(f, SMB_AUTHOR, info->author)) != SMB_SUCCESS)
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		return i;

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	if(*info->group && (i = smb_new_hfield_str(f, SMB_AUTHOR_ORG, info->group)) != SMB_SUCCESS)
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		return i;

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	if(f->desc == NULL && *info->title && (i = smb_new_hfield_str(f, SMB_FILEDESC, info->title)) != SMB_SUCCESS)
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		return i;

	return SMB_SUCCESS;
}

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bool addfile(scfg_t* cfg, uint dirnum, file_t* f, const char* extdesc, client_t* client)
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{
	char fpath[MAX_PATH + 1];
	smb_t smb;

	if(smb_open_dir(cfg, &smb, dirnum) != SMB_SUCCESS)
		return false;

	getfilepath(cfg, f, fpath);
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	if(f->from_ip == NULL)
		file_client_hfields(f, client);
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	str_list_t list = list_archive_contents(fpath, /* pattern: */NULL
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		,(cfg->dir[dirnum]->misc & DIR_NOHASH) == 0, /* sort: */TRUE, /* error: */NULL, /* size: */0);
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	int result = smb_addfile_withlist(&smb, f, SMB_SELFPACK, extdesc, list, fpath);
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	smb_close(&smb);
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	strListFree(&list);
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	return result == SMB_SUCCESS;
}

/* 'size' does not include the NUL-terminator */
char* format_filename(const char* fname, char* buf, size_t size, bool pad)
{
	size_t fnlen = strlen(fname);
	char* ext = getfext(fname);
	if(ext != NULL) {
		size_t extlen = strlen(ext);
		if(extlen >= size)
			safe_snprintf(buf, size + 1, "%s", fname);
		else {
			fnlen -= extlen;
			if(fnlen > size - extlen)
				fnlen = size - extlen;
			safe_snprintf(buf, size + 1, "%-*.*s%s", (int)(pad ? (size - extlen) : 0), (int)fnlen, fname, ext);
		}
	} else	/* no extension */
		snprintf(buf, size + 1, "%s", fname);
	return buf;
}

int archive_type(const char* archive, char* str, size_t size)
{
	int result;
	struct archive *ar;
	struct archive_entry *entry;

	if((ar = archive_read_new()) == NULL) {
		safe_snprintf(str, size, "archive_read_new returned NULL");
		return -1;
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	}
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	archive_read_support_filter_all(ar);
	archive_read_support_format_all(ar);
	if((result = archive_read_open_filename(ar, archive, 10240)) != ARCHIVE_OK) {
		safe_snprintf(str, size, "archive_read_open_filename returned %d: %s"
			,result, archive_error_string(ar));
		archive_read_free(ar);
		return result;
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	}
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	result = archive_filter_code(ar, 0);
	if(result >= 0) {
		int comp = result;
		result = archive_read_next_header(ar, &entry);
		if(result != ARCHIVE_OK)
			safe_snprintf(str, size, "archive_read_next_header returned %d: %s"
				,result, archive_error_string(ar));
		else {
			result = archive_format(ar);
			if(comp > 0)
				safe_snprintf(str, size, "%s/%s", archive_filter_name(ar, 0), archive_format_name(ar));
			else
				safe_snprintf(str, size, "%s", archive_format_name(ar));
		}
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	}
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	archive_read_free(ar);
	return result;
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}

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str_list_t list_archive_contents(const char* filename, const char* pattern, bool hash, bool sort, char* error, size_t maxerrlen)
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{
	int result;
	struct archive *ar;
	struct archive_entry *entry;

	if((ar = archive_read_new()) == NULL) {
		safe_snprintf(error, maxerrlen, "archive_read_new() returned NULL");
		return NULL;
	}
	archive_read_support_filter_all(ar);
	archive_read_support_format_all(ar);
	if((result = archive_read_open_filename(ar, filename, 10240)) != ARCHIVE_OK) {
		safe_snprintf(error, maxerrlen, "archive_read_open_filename() returned %d: %s"
			,result, archive_error_string(ar));
		archive_read_free(ar);
		return NULL;
	}

	str_list_t list = strListInit();
    if(list == NULL) {
		safe_snprintf(error, maxerrlen, "strListInit() returned NULL");
		archive_read_free(ar);
		return NULL;
	}

	while(1) {
		result = archive_read_next_header(ar, &entry);
		if(result != ARCHIVE_OK) {
			if(result != ARCHIVE_EOF) {
				safe_snprintf(error, maxerrlen, "archive_read_next_header() returned %d: %s"
					,result, archive_error_string(ar));
				archive_read_free(ar);
				strListFree(&list);
				return NULL;
			}
			break;
		}

		const char* pathname = archive_entry_pathname(entry);
		if(pathname == NULL)
			continue;

		if(pattern != NULL && *pattern && !wildmatch(pathname, pattern, /* path: */false, /* case-sensitive: */false))
			continue;

		const char* type;
		switch(archive_entry_filetype(entry)) {
			case AE_IFREG:
				type = "file";
				break;
			case AE_IFLNK:
				type = "link";
				break;
			case AE_IFDIR:
				type = "directory";
				break;
			default:
				continue;
		}

		iniSetString(&list, pathname, "type", type, /* style: */NULL);
		iniSetBytes(&list, pathname, "size", 1, archive_entry_size(entry), /* style: */NULL);
		iniSetDateTime(&list, pathname, "time", true, archive_entry_mtime(entry), NULL);
		iniSetInteger(&list, pathname, "mode", archive_entry_mode(entry), NULL);
		iniSetString(&list, pathname, "format", archive_format_name(ar), NULL);
		iniSetString(&list, pathname, "compression", archive_filter_name(ar, 0), NULL);

		if(hash && archive_entry_filetype(entry) == AE_IFREG) {
			MD5 md5_ctx;
			SHA1_CTX sha1_ctx;
			uint8_t md5[MD5_DIGEST_SIZE];
			uint8_t sha1[SHA1_DIGEST_SIZE];
			uint32_t crc32 = 0;

			MD5_open(&md5_ctx);
			SHA1Init(&sha1_ctx);

			const void *buff;
			size_t size;
			la_int64_t offset;

			for(;;) {
				result = archive_read_data_block(ar, &buff, &size, &offset);
				if(result != ARCHIVE_OK)
					break;
				crc32 = crc32i(~crc32, buff, size);
				MD5_digest(&md5_ctx, buff, size);
				SHA1Update(&sha1_ctx, buff, size);
			}
			MD5_close(&md5_ctx, md5);
			SHA1Final(&sha1_ctx, sha1);
			iniSetHexInt(&list, pathname, "crc32", crc32, NULL);
			char hex[128];
			iniSetString(&list, pathname, "md5", MD5_hex(hex, md5), NULL);
			iniSetString(&list, pathname, "sha1", SHA1_hex(hex, sha1), NULL);
		}
	}
	archive_read_free(ar);
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	if(sort)
		iniSortSections(&list, /* sort_keys: */TRUE);
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	return list;
}

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str_list_t directory(const char* path)
{
	int			flags = GLOB_MARK;
	glob_t		g;

	if(glob(path, flags, NULL, &g) != 0)
		return NULL;
	str_list_t list = strListInit();
	for(size_t i = 0; i < g.gl_pathc; i++) {
		strListPush(&list, g.gl_pathv[i]);
	}
	globfree(&g);
	return list;
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}

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const char* supported_archive_formats[] = { "zip", "7z", "tgz", "tbz", NULL };
// Returns negative on error
long create_archive(const char* archive, const char* format
	,bool with_path, str_list_t file_list, char* error, size_t maxerrlen)
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{
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	int result;
	struct archive *ar;
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	if(file_list == NULL || *file_list == NULL)
		return 0;
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	if((ar = archive_write_new()) == NULL) {
		safe_snprintf(error, maxerrlen, "archive_write_new returned NULL");
		return -1;
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	}
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	if(stricmp(format, "tgz") == 0) {
		archive_write_add_filter_gzip(ar);
		archive_write_set_format_pax_restricted(ar);
	} else if(stricmp(format, "tbz") == 0) {
		archive_write_add_filter_bzip2(ar);
		archive_write_set_format_pax_restricted(ar);
	} else if(stricmp(format, "zip") == 0) {
		archive_write_set_format_zip(ar);
	} else if(stricmp(format, "7z") == 0) {
		archive_write_set_format_7zip(ar);
	} else {
		safe_snprintf(error, maxerrlen, "unsupported format: %s", format);
		return -2;
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	}
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	if((result = archive_write_open_filename(ar, archive)) != ARCHIVE_OK) {
		safe_snprintf(error, maxerrlen, "archive_write_open_filename(%s) returned %d: %s"
			,archive, result, archive_error_string(ar));
		archive_write_free(ar);
		return result;
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	}
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	ulong file_count = 0;
	for(;file_list[file_count] != NULL; file_count++) {
		struct archive_entry* entry;
		struct stat st;
		const char* filename = file_list[file_count];
		FILE* fp = fopen(filename, "rb");
		if(fp == NULL) {
			safe_snprintf(error, maxerrlen, "%d opening %s", errno, filename);
			break;
		}
		fstat(fileno(fp), &st);
		if((entry = archive_entry_new()) == NULL) {
			safe_snprintf(error, maxerrlen, "archive_entry_new returned NULL");
			fclose(fp);
			break;
		}
		if(with_path)
			archive_entry_set_pathname(entry, filename);
		else
			archive_entry_set_pathname(entry, getfname(filename));
		archive_entry_set_size(entry, st.st_size);
		archive_entry_set_mtime(entry, st.st_mtime, 0);
		archive_entry_set_filetype(entry, AE_IFREG);
		archive_entry_set_perm(entry, 0644);
		if((result = archive_write_header(ar, entry)) != ARCHIVE_OK)
			safe_snprintf(error, maxerrlen, "archive_write_header returned %d", result);
		else while(!feof(fp)) {
			char buf[256 * 1024];
			size_t len = fread(buf, 1, sizeof(buf), fp);
			if((result = archive_write_data(ar, buf, len)) != len) {
				safe_snprintf(error, maxerrlen, "archive_write_data returned %d instead of %d", result, (int)len);
				break;
			} else
				result = ARCHIVE_OK;
		}
		fclose(fp);
		archive_entry_free(entry);
		if(result != ARCHIVE_OK)
			break;
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	}
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	archive_write_close(ar);
	archive_write_free(ar);
	if(file_list[file_count] != NULL)
		return result < 0 ? result : -1;
	return file_count;
}

long extract_files_from_archive(const char* archive, const char* outdir, const char* allowed_filename_chars
	,bool with_path, long max_files, str_list_t file_list, char* error, size_t maxerrlen)
{
	int result;
	struct archive *ar;
	struct archive_entry *entry;
	long extracted = 0;
	char fpath[MAX_PATH + 1];

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	if(error == NULL)
		maxerrlen = 0;
	if(maxerrlen >= 1)
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		*error = '\0';
	if((ar = archive_read_new()) == NULL) {
		safe_snprintf(error, maxerrlen, "archive_read_new returned NULL");
		return -1;
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	}
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	archive_read_support_filter_all(ar);
	archive_read_support_format_all(ar);
	if((result = archive_read_open_filename(ar, archive, 10240)) != ARCHIVE_OK) {
		safe_snprintf(error, maxerrlen, "archive_read_open_filename returned %d: %s"
			,result, archive_error_string(ar));
		archive_read_free(ar);
		return result >= 0 ? -1 : result;
	}
	while(1) {
		result = archive_read_next_header(ar, &entry);
		if(result != ARCHIVE_OK) {
			if(result != ARCHIVE_EOF)
				safe_snprintf(error, maxerrlen, "archive_read_next_header returned %d: %s"
					,result, archive_error_string(ar));
			break;
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		}
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		const char* pathname = archive_entry_pathname(entry);
		if(pathname == NULL)
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			continue;
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		int filetype = archive_entry_filetype(entry);
		if(filetype == AE_IFDIR) {
			if(!with_path)
				continue;
			if(strstr(pathname, "..") != NULL) {
				safe_snprintf(error, maxerrlen, "Illegal double-dots in path '%s'", pathname);
				break;
			}
			SAFECOPY(fpath, outdir);
			backslash(fpath);
			SAFECAT(fpath, pathname);
			if(mkpath(fpath) != 0) {
				char err[256];
				safe_snprintf(error, maxerrlen, "%d (%s) creating path '%s'", errno, safe_strerror(errno, err, sizeof(err)), fpath);
				break;
			}
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			continue;
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		}
		if(filetype != AE_IFREG)
			continue;
		char* filename = getfname(pathname);
		if(!with_path)
			pathname = filename;
		if(file_list != NULL) {
			int i;
			for (i = 0; file_list[i] != NULL; i++)
				if(wildmatch(pathname, file_list[i], with_path, /* case-sensitive: */false))
					break;
			if(file_list[i] == NULL)
				continue;
		}
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		if(allowed_filename_chars != NULL
			&& *allowed_filename_chars != '\0'
			&& strspn(filename, allowed_filename_chars) != strlen(filename)) {
			safe_snprintf(error, maxerrlen, "disallowed filename '%s'", pathname);
			break;
		}
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		SAFECOPY(fpath, outdir);
		backslash(fpath);
		SAFECAT(fpath, pathname);
		FILE* fp = fopen(fpath, "wb");
		if(fp == NULL) {
			char err[256];
			safe_snprintf(error, maxerrlen, "%d (%s) opening/creating '%s'", errno, safe_strerror(errno, err, sizeof(err)), fpath);
			break;
		}

		const void *buff;
		size_t size;
		la_int64_t offset;
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		for(;;) {
			result = archive_read_data_block(ar, &buff, &size, &offset);
			if(result == ARCHIVE_EOF) {
				extracted++;
				break;
			}
			if(result < ARCHIVE_OK) {
				safe_snprintf(error, maxerrlen, "archive_read_data_block returned %d: %s"
					,result, archive_error_string(ar));
				break;
			}
			if(fwrite(buff, 1, size, fp) != size)
				break;
		}
		fclose(fp);
		if(result != ARCHIVE_EOF)
			(void)remove(fpath);
		if(max_files && extracted >= max_files) {
			safe_snprintf(error, maxerrlen, "maximum number of files (%lu) extracted", max_files);
			break;
		}
	}
	archive_read_free(ar);
	return extracted;
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}

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bool extract_diz(scfg_t* cfg, file_t* f, str_list_t diz_fnames, char* path, size_t maxlen)
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{
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	int i;
	char archive[MAX_PATH + 1];
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	char* default_diz_fnames[] = { "FILE_ID.ANS", "FILE_ID.DIZ", "DESC.SDI", NULL };
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	getfilepath(cfg, f, archive);
	if(diz_fnames == NULL)
		diz_fnames = default_diz_fnames;

	if(!fexistcase(archive))
		return false;

	for(i = 0; diz_fnames[i] != NULL; i++) {
		safe_snprintf(path, maxlen, "%s%s", cfg->temp_dir, diz_fnames[i]); // no slash
		removecase(path);
		if(fexistcase(path))	// failed to delete?
			return false;
	}

	if(extract_files_from_archive(archive
		,/* outdir: */cfg->temp_dir
		,/* allowed_filename_chars: */NULL /* any */
		,/* with_path: */false
		,/* max_files: */strListCount(diz_fnames)
		,/* file_list: */diz_fnames
		,/* error: */NULL, 0) >= 0) {
		for(i = 0; diz_fnames[i] != NULL; i++) {
			safe_snprintf(path, maxlen, "%s%s", cfg->temp_dir, diz_fnames[i]); // no slash
			if(fexistcase(path))
				return true;
		}
		return false;
	}

	char* fext = getfext(f->name);
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	if(fext == NULL)
		return false;

	for(i = 0; i < cfg->total_fextrs; i++)
		if(stricmp(cfg->fextr[i]->ext, fext + 1) == 0 && chk_ar(cfg, cfg->fextr[i]->ar, /* user: */NULL, /* client: */NULL))
			break;
	if(i >= cfg->total_fextrs)
		return false;

	fextr_t* fextr = cfg->fextr[i];
	char cmd[512];
	for(i = 0; diz_fnames[i] != NULL; i++) {
		safe_snprintf(path, maxlen, "%s%s", cfg->temp_dir, diz_fnames[i]);
		system(cmdstr(cfg, /* user: */NULL, fextr->cmd, archive, diz_fnames[i], cmd, sizeof(cmd)));
		if(fexistcase(path))
			return true;
	}
	return false;
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}

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char* read_diz(const char* path, struct sauce_charinfo* sauce)
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{
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	if(sauce != NULL)
		memset(sauce, 0, sizeof(*sauce));

	off_t len = flength(path);
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	if(len < 1)
		return NULL;

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	FILE* fp = fopen(path, "rb");
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	if(fp == NULL)
		return NULL;
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	if(sauce != NULL)
		sauce_fread_charinfo(fp, /* type: */NULL, sauce);

	if(len > LEN_EXTDESC)
		len = LEN_EXTDESC;

	char* buf = calloc((size_t)len + 1, 1);
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	if(buf != NULL) {
		size_t rd = fread(buf, 1, (size_t)len, fp);
		buf[rd] = 0;
		char* eof = strchr(buf, CTRL_Z);	// CP/M EOF
		if(eof != NULL)
			*eof = '\0';
	}
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	fclose(fp);
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	return buf;
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}
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char* format_diz(const char* src, char* dest, size_t maxlen, int width, bool ice)
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{
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	if(src == NULL) {
		*dest = '\0';
		return dest;
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	}
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	convert_ansi(src, dest, maxlen - 1, width, ice);
	return dest;
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}
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// Take a verbose extended description (e.g. FILE_ID.DIZ)
// and convert to suitable short description
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char* prep_file_desc(const char* ext, char* dest)
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{
	int out;
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	char* src;
	char* buf = strdup(ext);
	if(buf == NULL)
		src = (char*)ext;
	else {
		src = buf;
		strip_ctrl(src, src);
	}
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	FIND_ALPHANUMERIC(src);
	for(out = 0; *src != '\0' && out < LEN_FDESC; src++) {
		if(IS_WHITESPACE(*src) && out && IS_WHITESPACE(dest[out - 1]))
			continue;
		if(!IS_ALPHANUMERIC(*src) && out && *src == dest[out - 1])
			continue;
		if(*src == '\n') {
			if(out && !IS_WHITESPACE(dest[out - 1]))
				dest[out++] = ' ';
			continue;
		}
		if(IS_CONTROL(*src))
			continue;
		dest[out++] = *src;
	}
	dest[out] = '\0';
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	free(buf);
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	return dest;
}
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static const char* quoted_string(const char* str, char* buf, size_t maxlen)
{
	if(strchr(str,' ')==NULL)
		return(str);
	safe_snprintf(buf,maxlen,"\"%s\"",str);
	return(buf);
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}
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#define QUOTED_STRING(ch, str, buf, maxlen) \
	((IS_ALPHA(ch) && IS_UPPERCASE(ch)) ? str : quoted_string(str,buf,maxlen))

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/****************************************************************************/
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/* Returns command line generated from instr with %c replacements           */
/* This is the C-exported version of sbbs_t::cmdstr()						*/
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/****************************************************************************/
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char* cmdstr(scfg_t* cfg, user_t* user, const char* instr, const char* fpath
						,const char* fspec, char* cmd, size_t maxlen)
1170
{
1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329
	char	str[MAX_PATH+1];
    int		i,j,len;

	len=strlen(instr);
	for(i=j=0; i < len && j < (int)maxlen; i++) {
        if(instr[i]=='%') {
            i++;
            cmd[j]=0;
			int avail = maxlen - j;
			char ch=instr[i];
			if(IS_ALPHA(ch))
				ch=toupper(ch);
            switch(ch) {
                case 'A':   /* User alias */
					if(user!=NULL)
						strncat(cmd,QUOTED_STRING(instr[i],user->alias,str,sizeof(str)), avail);
                    break;
                case 'B':   /* Baud (DTE) Rate */
                    break;
                case 'C':   /* Connect Description */
					if(user!=NULL)
						strncat(cmd,user->modem, avail);
                    break;
                case 'D':   /* Connect (DCE) Rate */
                    break;
                case 'E':   /* Estimated Rate */
                    break;
                case 'F':   /* File path */
                    strncat(cmd,QUOTED_STRING(instr[i],fpath,str,sizeof(str)), avail);
                    break;
                case 'G':   /* Temp directory */
                    strncat(cmd,cfg->temp_dir, avail);
                    break;
                case 'H':   /* Port Handle or Hardware Flow Control */
                    break;
                case 'I':   /* IP address */
					if(user!=NULL)
						strncat(cmd,user->note, avail);
                    break;
                case 'J':
                    strncat(cmd,cfg->data_dir, avail);
                    break;
                case 'K':
                    strncat(cmd,cfg->ctrl_dir, avail);
                    break;
                case 'L':   /* Lines per message */
					if(user!=NULL)
						strncat(cmd,ultoa(cfg->level_linespermsg[user->level],str,10), avail);
                    break;
                case 'M':   /* Minutes (credits) for user */
					if(user!=NULL)
						strncat(cmd,ultoa(user->min,str,10), avail);
                    break;
                case 'N':   /* Node Directory (same as SBBSNODE environment var) */
                    strncat(cmd,cfg->node_dir, avail);
                    break;
                case 'O':   /* SysOp */
                    strncat(cmd,QUOTED_STRING(instr[i],cfg->sys_op,str,sizeof(str)), avail);
                    break;
                case 'P':   /* Client protocol */
                    break;
                case 'Q':   /* QWK ID */
                    strncat(cmd,cfg->sys_id, avail);
                    break;
                case 'R':   /* Rows */
					if(user!=NULL)
						strncat(cmd,ultoa(user->rows,str,10), avail);
                    break;
                case 'S':   /* File Spec */
                    strncat(cmd, fspec, avail);
                    break;
                case 'T':   /* Time left in seconds */
                    break;
                case 'U':   /* UART I/O Address (in hex) */
                    strncat(cmd,ultoa(cfg->com_base,str,16), avail);
                    break;
                case 'V':   /* Synchronet Version */
                    sprintf(str,"%s%c",VERSION,REVISION);
					strncat(cmd,str, avail);
                    break;
                case 'W':   /* Columns/width */
                    break;
                case 'X':
					if(user!=NULL)
						strncat(cmd,cfg->shell[user->shell]->code, avail);
                    break;
                case '&':   /* Address of msr */
                    break;
                case 'Y':
                    break;
                case 'Z':
                    strncat(cmd,cfg->text_dir, avail);
                    break;
				case '~':	/* DOS-compatible (8.3) filename */
				{
#ifdef _WIN32
					char sfpath[MAX_PATH+1];
					SAFECOPY(sfpath,fpath);
					GetShortPathName(fpath,sfpath,sizeof(sfpath));
					strncat(cmd,sfpath, avail);
#else
                    strncat(cmd,QUOTED_STRING(instr[i],fpath,str,sizeof(str)), avail);
#endif
					break;
				}
                case '!':   /* EXEC Directory */
                    strncat(cmd,cfg->exec_dir, avail);
                    break;
                case '@':   /* EXEC Directory for DOS/OS2/Win32, blank for Unix */
#ifndef __unix__
                    strncat(cmd,cfg->exec_dir, avail);
#endif
                    break;

                case '#':   /* Node number (same as SBBSNNUM environment var) */
                    sprintf(str,"%d",cfg->node_num);
                    strncat(cmd,str, avail);
                    break;
                case '*':
                    sprintf(str,"%03d",cfg->node_num);
                    strncat(cmd,str, avail);
                    break;
                case '$':   /* Credits */
					if(user!=NULL)
						strncat(cmd,ultoa(user->cdt+user->freecdt,str,10), avail);
                    break;
                case '%':   /* %% for percent sign */
                    strncat(cmd,"%", avail);
                    break;
				case '.':	/* .exe for DOS/OS2/Win32, blank for Unix */
#ifndef __unix__
					strncat(cmd,".exe", avail);
#endif
					break;
				case '?':	/* Platform */
#ifdef __OS2__
					strcpy(str,"OS2");
#else
					strcpy(str,PLATFORM_DESC);
#endif
					strlwr(str);
					strncat(cmd,str, avail);
					break;
				case '^':	/* Architecture */
					strncat(cmd, ARCHITECTURE_DESC, avail);
					break;
                default:    /* unknown specification */
                    if(IS_DIGIT(instr[i]) && user!=NULL) {
                        sprintf(str,"%0*d",instr[i]&0xf,user->number);
                        strncat(cmd,str, avail);
					}
                    break;
			}
            j=strlen(cmd);
		}
        else
            cmd[j++]=instr[i];
	}
    cmd[j]=0;
1330

1331
    return(cmd);
1332
}
1333