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parse_cmdline.c
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/* parse_cmdline.c - parsing of command line options */
#include "parse_cmdline.h"
#include "file_mask.h"
#include "find_file.h"
#include "hash_print.h"
#include "output.h"
#include "rhash_main.h"
#include "win_utils.h"
#include "librhash/rhash.h"
#include <assert.h>
#include <errno.h>
#include <locale.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
# include <windows.h> /* for CommandLineToArgvW(), GetCommandLineW(), ... */
#endif
typedef struct options_t options_t;
struct options_t conf_opt; /* config file parsed options */
struct options_t opt; /* command line options */
static const char* get_full_program_version(void)
{
static char version_buffer[64];
sprintf(version_buffer, "%s v%s\n", PROGRAM_NAME, get_version_string());
assert(strlen(version_buffer) < sizeof(version_buffer));
return version_buffer;
}
static void print_version(void)
{
rsh_fprintf(rhash_data.out, "%s", get_full_program_version());
rsh_exit(0);
}
static void print_help_line(const char* option, const char* format, ...)
{
va_list args;
va_start(args, format);
rsh_fprintf(rhash_data.out, "%s", option);
rsh_vfprintf(rhash_data.out, format, args);
va_end(args);
}
/**
* Print program help.
*/
static void print_help(void)
{
const char* checksum_format;
const char* digest_format;
assert(rhash_data.out != NULL);
/* print program version and usage */
rsh_fprintf(rhash_data.out, _("%s\n"
"Usage: %s [OPTION...] [FILE | -]...\n"
" %s --printf=<format string> [FILE | -]...\n\n"), get_full_program_version(), CMD_FILENAME, CMD_FILENAME);
rsh_fprintf(rhash_data.out, _("Options:\n"));
print_help_line(" -V, --version ", _("Print program version and exit.\n"));
print_help_line(" -h, --help ", _("Print this help screen.\n"));
/* TRANSLATORS: help screen line template for CRC32 and CRC32C */
checksum_format = _("Calculate %s checksum.\n");
/* TRANSLATORS: help screen line template for MD5, SHA1, e.t.c.\n" */
digest_format = _("Calculate %s message digest.\n");
print_help_line(" -C, --crc32 ", checksum_format, "CRC32");
print_help_line(" --crc32c ", checksum_format, "CRC32C");
print_help_line(" --md4 ", digest_format, "MD4");
print_help_line(" -M, --md5 ", digest_format, "MD5");
print_help_line(" -H, --sha1 ", digest_format, "SHA1");
print_help_line(" --sha224, --sha256, --sha384, --sha512 ", digest_format, "SHA2");
print_help_line(" --sha3-224, --sha3-256, --sha3-384, --sha3-512 ", digest_format, "SHA3");
print_help_line(" -T, --tth ", digest_format, "TTH");
print_help_line(" --btih ", digest_format, "BitTorrent InfoHash");
print_help_line(" -A, --aich ", digest_format, "AICH");
print_help_line(" -E, --ed2k ", digest_format, "eDonkey");
print_help_line(" -L, --ed2k-link ", _("Calculate and print eDonkey link.\n"));
print_help_line(" --tiger ", digest_format, "Tiger");
print_help_line(" -G, --gost12-256 ", digest_format, _("GOST R 34.11-2012, 256 bit"));
print_help_line(" --gost12-512 ", digest_format, _("GOST R 34.11-2012, 512 bit"));
/* TRANSLATORS: This hash function name should be translated to Russian only */
print_help_line(" --gost94 ", digest_format, _("GOST R 34.11-94"));
/* TRANSLATORS: This hash function name should be translated to Russian only */
print_help_line(" --gost94-cryptopro ", digest_format, _("GOST R 34.11-94 CryptoPro"));
print_help_line(" --ripemd160 ", digest_format, "RIPEMD-160");
print_help_line(" --has160 ", digest_format, "HAS-160");
print_help_line(" --blake2s, --blake2b ", digest_format, "BLAKE2S/BLAKE2B");
print_help_line(" --edonr256, --edonr512 ", digest_format, "EDON-R 256/512");
print_help_line(" --snefru128, --snefru256 ", digest_format, "SNEFRU-128/256");
print_help_line(" -a, --all ", _("Calculate all supported hash functions.\n"));
print_help_line(" -c, --check ", _("Check hash files specified by command line.\n"));
print_help_line(" -u, --update=<file> ", _("Update the specified hash file.\n"));
print_help_line(" -e, --embed-crc ", _("Rename files by inserting crc32 sum into name.\n"));
print_help_line(" -k, --check-embedded ", _("Verify files by crc32 sum embedded in their names.\n"));
print_help_line(" --list-hashes ", _("List the names of supported hash functions, one per line.\n"));
print_help_line(" -B, --benchmark ", _("Benchmark selected algorithm.\n"));
print_help_line(" -v, --verbose ", _("Be verbose.\n"));
print_help_line(" -r, --recursive ", _("Process directories recursively.\n"));
print_help_line(" --file-list=<file> ", _("Process a list of files.\n"));
print_help_line(" -m, --message=<text> ", _("Process the text message.\n"));
print_help_line(" --skip-ok ", _("Don't print OK messages for successfully verified files.\n"));
print_help_line(" -i, --ignore-case ", _("Ignore case of filenames when updating hash files.\n"));
print_help_line(" -P, --percents ", _("Show percents, while calculating or verifying message digests.\n"));
print_help_line(" --speed ", _("Output per-file and total processing speed.\n"));
print_help_line(" --maxdepth=<n> ", _("Descend at most <n> levels of directories.\n"));
if (rhash_is_openssl_supported())
print_help_line(" --openssl=<list> ", _("Specify hash functions to be calculated using OpenSSL.\n"));
print_help_line(" -o, --output=<file> ", _("File to output calculation or checking results.\n"));
print_help_line(" -l, --log=<file> ", _("File to log errors and verbose information.\n"));
print_help_line(" --sfv ", _("Print message digests, using SFV format (default).\n"));
print_help_line(" --bsd ", _("Print message digests, using BSD-like format.\n"));
print_help_line(" --simple ", _("Print message digests, using simple format.\n"));
print_help_line(" --hex ", _("Print message digests in hexadecimal format.\n"));
print_help_line(" --base32 ", _("Print message digests in Base32 format.\n"));
print_help_line(" -b, --base64 ", _("Print message digests in Base64 format.\n"));
print_help_line(" -g, --magnet ", _("Print message digests as magnet links.\n"));
print_help_line(" --torrent ", _("Create torrent files.\n"));
#ifdef _WIN32
print_help_line(" --utf8 ", _("Use UTF-8 encoding for output (Windows only).\n"));
print_help_line(" --win ", _("Use Windows codepage for output (Windows only).\n"));
print_help_line(" --dos ", _("Use DOS codepage for output (Windows only).\n"));
#endif
print_help_line(" --template=<file> ", _("Load a printf-like template from the <file>\n"));
print_help_line(" -p, --printf=<format string> ", _("Format and print message digests.\n"));
print_help_line(" ", _("See the RHash manual for details.\n"));
rsh_exit(0);
}
/**
* Print the names of all supported hash algorithms to the console.
*/
static void list_hashes(void)
{
unsigned id;
for (id = 1; id < RHASH_ALL_HASHES; id <<= 1) {
const char* hash_name = rhash_get_name(id);
if (hash_name) rsh_fprintf(rhash_data.out, "%s\n", hash_name);
}
rsh_exit(0);
}
enum file_suffix_type {
MASK_ACCEPT,
MASK_EXCLUDE,
MASK_CRC_ACCEPT
};
/**
* Add a special file.
*
* @param o pointer to the options structure to update
* @param path the path of the file
* @param type the type of the option
*/
static void add_special_file(options_t* o, tstr_t path, unsigned file_mode)
{
if (o->search_data) {
file_search_add_file(o->search_data, path, file_mode);
opt.has_files = 1;
}
}
/**
* Process --accept, --exclude and --crc-accept options.
*
* @param o pointer to the options structure to update
* @param accept_string comma delimited string to parse
* @param type the type of the option
*/
static void add_file_suffix(options_t* o, char* accept_string, unsigned type)
{
file_mask_array** ptr = (type == MASK_ACCEPT ? &o->files_accept :
type == MASK_EXCLUDE ? &o->files_exclude : &o->crc_accept);
if (!*ptr) *ptr = file_mask_new();
file_mask_add_list(*ptr, accept_string);
}
/**
* Process --bt_announce option.
*
* @param o pointer to the options structure
* @param announce_url the url to parse
* @param unused a tottaly unused parameter
*/
static void bt_announce(options_t* o, char* announce_url, unsigned unused)
{
(void)unused;
/* skip empty string */
if (!announce_url || !announce_url[0]) return;
if (!o->bt_announce) o->bt_announce = rsh_vector_new_simple();
rsh_vector_add_ptr(o->bt_announce, rsh_strdup(announce_url));
}
/**
* Process an --openssl option.
*
* @param o pointer to the options structure to update
* @param openssl_hashes comma delimited string with names of hash functions
* @param type ignored
*/
static void openssl_flags(options_t* o, char* openssl_hashes, unsigned type)
{
(void)type;
if (rhash_is_openssl_supported())
{
rhash_uptr_t openssl_supported_hashes = rhash_get_openssl_supported_mask();
char* cur;
char* next;
o->openssl_mask = 0x80000000; /* turn off using default mask */
/* set the openssl_mask */
for (cur = openssl_hashes; cur && *cur; cur = next) {
print_hash_info* info = hash_info_table;
unsigned bit;
size_t length;
next = strchr(cur, ',');
length = (next != NULL ? (size_t)(next++ - cur) : strlen(cur));
for (bit = 1; bit <= RHASH_ALL_HASHES; bit = bit << 1, info++) {
if ( (bit & openssl_supported_hashes) &&
memcmp(cur, info->short_name, length) == 0 &&
info->short_name[length] == 0) {
o->openssl_mask |= bit;
break;
}
}
if (bit > RHASH_ALL_HASHES) {
cur[length] = '\0'; /* terminate wrong hash function name */
log_warning(_("openssl option doesn't support '%s' hash function\n"), cur);
}
}
}
else
log_warning(_("compiled without openssl support\n"));
}
/**
* Process --video option.
*
* @param o pointer to the options structure to update
*/
static void accept_video(options_t* o)
{
add_file_suffix(o, ".avi,.ogm,.mkv,.mp4,.mpeg,.mpg,.asf,.rm,.wmv,.vob", MASK_ACCEPT);
}
/**
* Say nya! Keep secret! =)
*/
static void nya(void)
{
rsh_fprintf(rhash_data.out, " /\\__/\\\n (^ _ ^.) %s\n (_uu__)\n",
/* TRANSLATORS: Keep it secret ;) */
_("Purrr..."));
rsh_exit(0);
}
/**
* Process on --maxdepth option.
*
* @param o pointer to the processed option
* @param number the string containing the max-depth number
* @param param unused parameter
*/
static void set_max_depth(options_t* o, char* number, unsigned param)
{
(void)param;
if (strspn(number, "0123456789") < strlen(number)) {
log_error(_("maxdepth parameter is not a number: %s\n"), number);
rsh_exit(2);
}
o->find_max_depth = atoi(number);
}
/**
* Set the length of a BitTorrent file piece.
*
* @param o pointer to the processed option
* @param number string containing the piece length number
* @param param unused parameter
*/
static void set_bt_piece_length(options_t* o, char* number, unsigned param)
{
(void)param;
if (strspn(number, "0123456789") < strlen(number)) {
log_error(_("bt-piece-length parameter is not a number: %s\n"), number);
rsh_exit(2);
}
o->bt_piece_length = (size_t)atoi(number);
}
/**
* Set the path separator to use when printing paths
*
* @param o pointer to the processed option
* @param sep file separator, can be only '/' or '\'
* @param param unused parameter
*/
static void set_path_separator(options_t* o, char* sep, unsigned param)
{
(void)param;
if ((*sep == '/' || *sep == '\\') && sep[1] == 0) {
o->path_separator = *sep;
#if defined(_WIN32)
/* MSYS environment changes '/' in command line to HOME, see http://www.mingw.org/wiki/FAQ */
} else if (getenv("MSYSTEM") || getenv("TERM")) {
log_warning(_("wrong path-separator, use '//' instead of '/' on MSYS\n"));
o->path_separator = '/';
#endif
} else {
log_error(_("path-separator is neither '/' nor '\\': %s\n"), sep);
rsh_exit(2);
}
}
/**
* Function pointer to store an option handler.
*/
typedef void(*opt_handler_t)(void);
/**
* Information about a command line option.
*/
typedef struct cmdline_opt_t
{
unsigned short type; /* how to process the option, see option_type_t below */
char short1, short2; /* short option names */
char* long_name; /* long option name */
opt_handler_t handler; /* option handler */
void* ptr; /* auxiliary pointer, e.g. to an opt field */
unsigned param; /* optional integer parameter */
} cmdline_opt_t;
enum option_type_t
{
F_NEED_PARAM = 16, /* flag: option needs a parameter */
F_OUTPUT_OPT = 32, /* flag: option changes program output */
F_UFLG = 1, /* set a bit flag in a uint32_t field */
F_UENC = F_UFLG | F_OUTPUT_OPT, /* an encoding changing option */
F_CSTR = 2 | F_NEED_PARAM, /* store parameter as a C string */
F_TSTR = 3 | F_NEED_PARAM, /* store parameter as a tstr_t */
F_TOUT = 4 | F_NEED_PARAM | F_OUTPUT_OPT,
F_VFNC = 5, /* just call a function */
F_PFNC = 6 | F_NEED_PARAM, /* process option parameter by calling a handler */
F_TFNC = 7 | F_NEED_PARAM, /* process option parameter by calling a handler */
F_UFNC = 8 | F_NEED_PARAM, /* pass UTF-8 encoded parameter to the handler */
F_PRNT = 9, /* print a constant C-string and exit */
};
#define is_param_required(option_type) ((option_type) & F_NEED_PARAM)
#define is_output_modifier(option_type) ((option_type) & F_OUTPUT_OPT)
/* supported program options */
cmdline_opt_t cmdline_opt[] =
{
/* program modes */
{ F_UFLG, 'c', 0, "check", 0, &opt.mode, MODE_CHECK },
{ F_UFLG, 'k', 0, "check-embedded", 0, &opt.mode, MODE_CHECK_EMBEDDED },
{ F_TSTR, 'u', 0, "update", 0, &opt.update_file, 0 },
{ F_UFLG, 'B', 0, "benchmark", 0, &opt.mode, MODE_BENCHMARK },
{ F_UFLG, 0, 0, "torrent", 0, &opt.mode, MODE_TORRENT },
{ F_VFNC, 0, 0, "list-hashes", (opt_handler_t)list_hashes, 0, 0 },
{ F_VFNC, 'h', 0, "help", (opt_handler_t)print_help, 0, 0 },
{ F_VFNC, 'V', 0, "version", (opt_handler_t)print_version, 0, 0 },
/* hash functions options */
{ F_UFLG, 'a', 0, "all", 0, &opt.sum_flags, RHASH_ALL_HASHES },
{ F_UFLG, 'C', 0, "crc32", 0, &opt.sum_flags, RHASH_CRC32 },
{ F_UFLG, 0, 0, "crc32c", 0, &opt.sum_flags, RHASH_CRC32C },
{ F_UFLG, 0, 0, "md4", 0, &opt.sum_flags, RHASH_MD4 },
{ F_UFLG, 'M', 0, "md5", 0, &opt.sum_flags, RHASH_MD5 },
{ F_UFLG, 'H', 0, "sha1", 0, &opt.sum_flags, RHASH_SHA1 },
{ F_UFLG, 0, 0, "sha224", 0, &opt.sum_flags, RHASH_SHA224 },
{ F_UFLG, 0, 0, "sha256", 0, &opt.sum_flags, RHASH_SHA256 },
{ F_UFLG, 0, 0, "sha384", 0, &opt.sum_flags, RHASH_SHA384 },
{ F_UFLG, 0, 0, "sha512", 0, &opt.sum_flags, RHASH_SHA512 },
{ F_UFLG, 0, 0, "sha3-224", 0, &opt.sum_flags, RHASH_SHA3_224 },
{ F_UFLG, 0, 0, "sha3-256", 0, &opt.sum_flags, RHASH_SHA3_256 },
{ F_UFLG, 0, 0, "sha3-384", 0, &opt.sum_flags, RHASH_SHA3_384 },
{ F_UFLG, 0, 0, "sha3-512", 0, &opt.sum_flags, RHASH_SHA3_512 },
{ F_UFLG, 0, 0, "tiger", 0, &opt.sum_flags, RHASH_TIGER },
{ F_UFLG, 'T', 0, "tth", 0, &opt.sum_flags, RHASH_TTH },
{ F_UFLG, 0, 0, "btih", 0, &opt.sum_flags, RHASH_BTIH },
{ F_UFLG, 'E', 0, "ed2k", 0, &opt.sum_flags, RHASH_ED2K },
{ F_UFLG, 'A', 0, "aich", 0, &opt.sum_flags, RHASH_AICH },
{ F_UFLG, 'G', 0, "gost12-256", 0, &opt.sum_flags, RHASH_GOST12_256 },
{ F_UFLG, 0, 0, "gost12-512", 0, &opt.sum_flags, RHASH_GOST12_512 },
{ F_UFLG, 0, 0, "gost94", 0, &opt.sum_flags, RHASH_GOST94 },
{ F_UFLG, 0, 0, "gost94-cryptopro", 0, &opt.sum_flags, RHASH_GOST94_CRYPTOPRO },
/* legacy: the following two gost options are left for compatibility */
{ F_UFLG, 0, 0, "gost", 0, &opt.sum_flags, RHASH_GOST94 },
{ F_UFLG, 0, 0, "gost-cryptopro", 0, &opt.sum_flags, RHASH_GOST94_CRYPTOPRO },
{ F_UFLG, 'W', 0, "whirlpool", 0, &opt.sum_flags, RHASH_WHIRLPOOL },
{ F_UFLG, 0, 0, "ripemd160", 0, &opt.sum_flags, RHASH_RIPEMD160 },
{ F_UFLG, 0, 0, "has160", 0, &opt.sum_flags, RHASH_HAS160 },
{ F_UFLG, 0, 0, "snefru128", 0, &opt.sum_flags, RHASH_SNEFRU128 },
{ F_UFLG, 0, 0, "snefru256", 0, &opt.sum_flags, RHASH_SNEFRU256 },
{ F_UFLG, 0, 0, "edonr256", 0, &opt.sum_flags, RHASH_EDONR256 },
{ F_UFLG, 0, 0, "edonr512", 0, &opt.sum_flags, RHASH_EDONR512 },
{ F_UFLG, 0, 0, "blake2s", 0, &opt.sum_flags, RHASH_BLAKE2S },
{ F_UFLG, 0, 0, "blake2b", 0, &opt.sum_flags, RHASH_BLAKE2B },
{ F_UFLG, 'L', 0, "ed2k-link", 0, &opt.sum_flags, OPT_ED2K_LINK },
/* output formats */
{ F_UFLG, 0, 0, "sfv", 0, &opt.fmt, FMT_SFV },
{ F_UFLG, 0, 0, "bsd", 0, &opt.fmt, FMT_BSD },
{ F_UFLG, 0, 0, "simple", 0, &opt.fmt, FMT_SIMPLE },
{ F_UFLG, 'g', 0, "magnet", 0, &opt.fmt, FMT_MAGNET },
{ F_UFLG, 0, 0, "uppercase", 0, &opt.flags, OPT_UPPERCASE },
{ F_UFLG, 0, 0, "lowercase", 0, &opt.flags, OPT_LOWERCASE },
{ F_TSTR, 0, 0, "template", 0, &opt.template_file, 0 },
{ F_CSTR, 'p', 0, "printf", 0, &opt.printf_str, 0 },
/* other options */
{ F_UFLG, 'r', 'R', "recursive", 0, &opt.flags, OPT_RECURSIVE },
{ F_TFNC, 'm', 0, "message", (opt_handler_t)add_special_file, 0, FileIsData },
{ F_TFNC, 0, 0, "file-list", (opt_handler_t)add_special_file, 0, FileIsList },
{ F_UFLG, 0, 0, "follow", 0, &opt.flags, OPT_FOLLOW },
{ F_UFLG, 'v', 0, "verbose", 0, &opt.flags, OPT_VERBOSE },
{ F_UFLG, 0, 0, "gost-reverse", 0, &opt.flags, OPT_GOST_REVERSE },
{ F_UFLG, 0, 0, "skip-ok", 0, &opt.flags, OPT_SKIP_OK },
{ F_UFLG, 'i', 0, "ignore-case", 0, &opt.flags, OPT_IGNORE_CASE },
{ F_UENC, 'P', 0, "percents", 0, &opt.flags, OPT_PERCENTS },
{ F_UFLG, 0, 0, "speed", 0, &opt.flags, OPT_SPEED },
{ F_UFLG, 'e', 0, "embed-crc", 0, &opt.flags, OPT_EMBED_CRC },
{ F_CSTR, 0, 0, "embed-crc-delimiter", 0, &opt.embed_crc_delimiter, 0 },
{ F_PFNC, 0, 0, "path-separator", (opt_handler_t)set_path_separator, 0, 0 },
{ F_TOUT, 'o', 0, "output", 0, &opt.output, 0 },
{ F_TOUT, 'l', 0, "log", 0, &opt.log, 0 },
{ F_PFNC, 'q', 0, "accept", (opt_handler_t)add_file_suffix, 0, MASK_ACCEPT },
{ F_PFNC, 't', 0, "crc-accept", (opt_handler_t)add_file_suffix, 0, MASK_CRC_ACCEPT },
{ F_PFNC, 0, 0, "exclude", (opt_handler_t)add_file_suffix, 0, MASK_EXCLUDE },
{ F_VFNC, 0, 0, "video", (opt_handler_t)accept_video, 0, 0 },
{ F_VFNC, 0, 0, "nya", (opt_handler_t)nya, 0, 0 },
{ F_PFNC, 0, 0, "maxdepth", (opt_handler_t)set_max_depth, 0, 0 },
{ F_UFLG, 0, 0, "bt-private", 0, &opt.flags, OPT_BT_PRIVATE },
{ F_PFNC, 0, 0, "bt-piece-length", (opt_handler_t)set_bt_piece_length, 0, 0 },
{ F_UFNC, 0, 0, "bt-announce", (opt_handler_t)bt_announce, 0, 0 },
{ F_TSTR, 0, 0, "bt-batch", 0, &opt.bt_batch_file, 0 },
{ F_UFLG, 0, 0, "benchmark-raw", 0, &opt.flags, OPT_BENCH_RAW },
{ F_UFLG, 0, 0, "no-detect-by-ext", 0, &opt.flags, OPT_NO_DETECT_BY_EXT },
{ F_UFLG, 0, 0, "no-path-escaping", 0, &opt.flags, OPT_NO_PATH_ESCAPING },
{ F_UFLG, 0, 0, "hex", 0, &opt.flags, OPT_HEX },
{ F_UFLG, 0, 0, "base32", 0, &opt.flags, OPT_BASE32 },
{ F_UFLG, 'b', 0, "base64", 0, &opt.flags, OPT_BASE64 },
{ F_PFNC, 0, 0, "openssl", (opt_handler_t)openssl_flags, 0, 0 },
#ifdef _WIN32 /* code pages (windows only) */
{ F_UENC, 0, 0, "utf8", 0, &opt.flags, OPT_UTF8 },
{ F_UENC, 0, 0, "win", 0, &opt.flags, OPT_ENC_WIN },
{ F_UENC, 0, 0, "dos", 0, &opt.flags, OPT_ENC_DOS },
/* legacy: the following two options are left for compatibility */
{ F_UENC, 0, 0, "ansi", 0, &opt.flags, OPT_ENC_WIN },
{ F_UENC, 0, 0, "oem", 0, &opt.flags, OPT_ENC_DOS },
#endif
{ 0,0,0,0,0,0,0 }
};
cmdline_opt_t cmdline_file = { F_TFNC, 0, 0, "FILE", (opt_handler_t)add_special_file, 0, 0 };
/**
* Log a message and exit the program.
*
* @param msg the message to log
*/
static void die(const char* msg)
{
log_error(msg);
rsh_exit(2);
}
/**
* Log an error about unknown option and exit the program.
*
* @param option_name the name of the unknown option encountered
*/
static void fail_on_unknow_option(const char* option_name)
{
log_error(_("unknown option: %s\n"), (option_name ? option_name : "?"));
rsh_exit(2);
}
/* structure to store command line option information */
typedef struct parsed_option_t
{
cmdline_opt_t* o;
const char* name; /* the parsed option name */
char buf[4];
void* parameter; /* option argument, if required */
} parsed_option_t;
/**
* Process given command line option
*
* @param opts the structure to store results of option processing
* @param option option to process
*/
static void apply_option(options_t* opts, parsed_option_t* option)
{
cmdline_opt_t* o = option->o;
unsigned short option_type = o->type;
char* value = NULL;
/* check if option requires a parameter */
if (is_param_required(option_type)) {
if (!option->parameter) {
log_error(_("argument is required for option %s\n"), option->name);
rsh_exit(2);
}
#ifdef _WIN32
if (option_type == F_TOUT || option_type == F_TFNC || option_type == F_TSTR) {
/* leave the value in UTF-16 */
value = (char*)rsh_wcsdup((wchar_t*)option->parameter);
}
else if (option_type == F_UFNC) {
/* convert from UTF-16 to UTF-8 */
value = convert_wcs_to_str((wchar_t*)option->parameter, ConvertToUtf8 | ConvertExact);
} else {
/* convert from UTF-16 */
value = convert_wcs_to_str((wchar_t*)option->parameter, ConvertToPrimaryEncoding);
}
rsh_vector_add_ptr(opt.mem, value);
#else
value = (char*)option->parameter;
#endif
}
/* process option, choosing the method by type */
switch (option_type) {
case F_UFLG:
case F_UENC:
*(unsigned*)((char*)opts + ((char*)o->ptr - (char*)&opt)) |= o->param;
break;
case F_CSTR:
case F_TSTR:
case F_TOUT:
/* save the option parameter */
*(char**)((char*)opts + ((char*)o->ptr - (char*)&opt)) = value;
break;
case F_PFNC:
case F_TFNC:
case F_UFNC:
/* call option parameter handler */
( (void(*)(options_t*, char*, unsigned))o->handler )(opts, value, o->param);
break;
case F_VFNC:
( (void(*)(options_t*))o->handler )(opts); /* call option handler */
break;
case F_PRNT:
log_msg("%s", (char*)o->ptr);
rsh_exit(0);
break;
default:
assert(0); /* impossible option type */
}
}
#ifdef _WIN32
# define rsh_tgetenv(name) _wgetenv(name)
#else
# define rsh_tgetenv(name) getenv(name)
#endif
#define COUNTOF(array) (sizeof(array) / sizeof(*array))
enum ConfigLookupFlags
{
ConfFlagNeedSplit = 8,
ConfFlagNoVars = 16
};
/**
* Check if a config file, specified by path subparts, is a regular file.
* On success the resulting path is stored as rhash_data.config_file.
*
* @param path_parts subparts of the path
* @param flags check flags
* @return 1 if the file is regular, 0 otherwise
*/
static int try_config(ctpath_t path_parts[], unsigned flags)
{
const size_t parts_count = flags & 3;
tpath_t allocated = NULL;
ctpath_t path = NULL;
size_t i;
for (i = 0; i < parts_count; i++) {
ctpath_t sub_path = path_parts[i];
if (sub_path[0] == RSH_T('$') && !(flags & ConfFlagNoVars)) {
sub_path = rsh_tgetenv(sub_path + 1);
if (!sub_path || !sub_path[0]) {
free(allocated);
return 0;
}
#ifndef _WIN32
/* check if the variable should be splitted */
if (flags == (2 | ConfFlagNeedSplit) && i == 0) {
tpath_t next;
ctpath_t parts[2];
parts[1] = path_parts[1];
sub_path = allocated = rsh_strdup(sub_path);
do {
next = strchr(sub_path, ':');
if (next)
*(next++) = '\0';
if (sub_path[0]) {
parts[0] = sub_path;
if (try_config(parts, COUNTOF(parts) | ConfFlagNoVars)) {
free(allocated);
return 1;
}
}
sub_path = next;
} while(sub_path);
free(allocated);
return 0;
}
#endif
}
if (path) {
tpath_t old_allocated = allocated;
path = allocated = make_tpath(path, sub_path);
free(old_allocated);
} else {
path = sub_path;
}
}
assert(!rhash_data.config_file.real_path);
{
unsigned init_flags = FileInitRunFstat | (!allocated ? FileInitReusePath : 0);
int res = file_init(&rhash_data.config_file, path, init_flags);
free(allocated);
if (res == 0 && FILE_ISREG(&rhash_data.config_file))
return 1;
file_cleanup(&rhash_data.config_file);
return 0;
}
}
/**
* Search for config file.
*
* @return 1 if config file is found, 0 otherwise
*/
static int find_conf_file(void)
{
#ifndef SYSCONFDIR
# define SYSCONFDIR "/etc"
#endif
#ifndef _WIN32
/* Linux/Unix part */
static ctpath_t xdg_conf_home[2] = { "$XDG_CONFIG_HOME", "rhash/rhashrc" };
static ctpath_t xdg_conf_default[2] = { "$HOME", ".config/rhash/rhashrc" };
static ctpath_t xdg_conf_dirs[2] = { "$XDG_CONFIG_DIRS", "rhash/rhashrc" };
static ctpath_t home_conf[2] = { "$HOME", ".rhashrc" };
static ctpath_t sysconf_dir[1] = { SYSCONFDIR "/rhashrc" };
return (try_config(xdg_conf_home, COUNTOF(xdg_conf_home)) ||
try_config(xdg_conf_default, COUNTOF(xdg_conf_default)) ||
try_config(xdg_conf_dirs, COUNTOF(xdg_conf_dirs) | ConfFlagNeedSplit) ||
try_config(home_conf, COUNTOF(home_conf)) ||
try_config(sysconf_dir, COUNTOF(sysconf_dir)));
#else /* _WIN32 */
static ctpath_t app_data[2] = { L"$APPDATA", L"RHash\\rhashrc" };
static ctpath_t home_conf[3] = { L"$HOMEDRIVE", L"$HOMEPATH", L"rhashrc" };
if (try_config(app_data, COUNTOF(app_data)) || try_config(home_conf, COUNTOF(home_conf))) {
return 1;
} else {
tpath_t prog_dir[2];
prog_dir[0] = get_program_dir();
prog_dir[1] = L"rhashrc";
return try_config((ctpath_t*)prog_dir, COUNTOF(prog_dir));
}
#endif /* _WIN32 */
}
/**
* Parse config file of the program.
*
* @return 0 on success, -1 on fail
*/
static int read_config(void)
{
#define LINE_BUF_SIZE 2048
char buf[LINE_BUF_SIZE];
FILE* fd;
parsed_option_t option;
unsigned line_number = 0;
int res;
/* initialize conf_opt */
memset(&conf_opt, 0, sizeof(opt));
conf_opt.find_max_depth = -1;
if (!find_conf_file()) return 0;
assert(!!rhash_data.config_file.real_path);
assert(FILE_ISREG(&rhash_data.config_file));
fd = file_fopen(&rhash_data.config_file, FOpenRead);
if (!fd) return -1;
while (fgets(buf, LINE_BUF_SIZE, fd)) {
size_t index;
cmdline_opt_t* t;
char* line = str_trim(buf);
char* name;
char* value;
line_number++;
if (*line == 0 || IS_COMMENT(*line))
continue;
/* search for '=' */
index = strcspn(line, "=");
if (line[index] == 0) {
log_warning(_("%s:%u: can't parse line \"%s\"\n"),
file_get_print_path(&rhash_data.config_file, FPathUtf8 | FPathNotNull),
line_number, line);
continue;
}
line[index] = 0;
name = str_trim(line);
for (t = cmdline_opt; t->type; t++) {
if (strcmp(name, t->long_name) == 0) {
break;
}
}
if (!t->type) {
log_warning(_("%s:%u: unknown option \"%s\"\n"),
file_get_print_path(&rhash_data.config_file, FPathUtf8 | FPathNotNull),
line_number, line);
continue;
}
value = str_trim(line + index + 1);
/* process a long option */
if (is_param_required(t->type)) {
rsh_vector_add_ptr(opt.mem, (value = rsh_strdup(value)));;
} else {
/* possible boolean values for a config file variable */
static const char* strings[] = { "on", "yes", "true", 0 };
const char** cmp;
for (cmp = strings; *cmp && strcmp(value, *cmp); cmp++);
if (*cmp == 0) continue;
}
option.name = name;
option.parameter = value;
option.o = t;
apply_option(&conf_opt, &option);
}
res = fclose(fd);
#ifdef _WIN32
if ( (opt.flags & OPT_ENCODING) == 0 )
opt.flags |= (conf_opt.flags & OPT_ENCODING);
#endif
return (res == 0 ? 0 : -1);
}
/**
* Find long option info, by it's name and retrieve its parameter if required.
* Error is reported for unknown options.
*
* @param option structure to receive the parsed option info
* @param parg pointer to a command line argument
*/
static void parse_long_option(parsed_option_t* option, rsh_tchar*** parg)
{
size_t length;
rsh_tchar* eq_sign;
cmdline_opt_t* t;
char* name;
#ifdef _WIN32
rsh_tchar* wname = **parg; /* "--<option name>" */
int fail = 0;
assert((**parg)[0] == L'-' && (**parg)[1] == L'-');
/* search for the '=' sign */
length = ((eq_sign = wcschr(wname, L'=')) ? (size_t)(eq_sign - wname) : wcslen(wname));
option->name = name = (char*)rsh_malloc(length + 1);
rsh_vector_add_ptr(opt.mem, name);
if (length < 30) {
size_t i = 0;
for (; i < length; i++) {
if (((unsigned)wname[i]) <= 128) name[i] = (char)wname[i];
else {
fail = 1;
break;
}
}
name[i] = '\0';
name += 2; /* skip "--" */
length -= 2;
} else fail = 1;
if (fail)
fail_on_unknow_option(convert_wcs_to_str(**parg, ConvertToUtf8));
#else
option->name = **parg;
name = **parg + 2; /* skip "--" */
length = ((eq_sign = strchr(name, '=')) ? (size_t)(eq_sign - name) : strlen(name));
name[length] = '\0';
#endif
/* search for the option by its name */
for (t = cmdline_opt; t->type && (strncmp(name, t->long_name, length) != 0 ||
strlen(t->long_name) != length); t++) {
}
if (!t->type) {
fail_on_unknow_option(option->name); /* report error and exit */
}
option->o = t; /* store the option found */
if (is_param_required(t->type)) {
/* store parameter without a code page conversion */
option->parameter = (eq_sign ? eq_sign + 1 : *(++(*parg)));
}
}
/**
* Parsed program command line.
*/
struct parsed_cmd_line_t
{
blocks_vector_t options; /* array of parsed options */
int argc;
char** argv;
#ifdef _WIN32
rsh_tchar** warg; /* program arguments in Unicode */
#endif
};
/**
* Allocate parsed option.
*
* @param cmd_line the command line to store the parsed option into
* @return allocated parsed option
*/
static parsed_option_t* new_option(struct parsed_cmd_line_t* cmd_line)
{
rsh_blocks_vector_add_empty(&cmd_line->options, 16, sizeof(parsed_option_t));
return rsh_blocks_vector_get_item(&cmd_line->options, cmd_line->options.size - 1, 16, parsed_option_t);
}
/**
* Parse command line arguments.
*
* @param cmd_line structure to store parsed options data
*/
static void parse_cmdline_options(struct parsed_cmd_line_t* cmd_line)
{
int argc;
int b_opt_end = 0;
rsh_tchar** parg;
rsh_tchar** end_arg;
parsed_option_t* next_opt;
#ifdef _WIN32
parg = cmd_line->warg = CommandLineToArgvW(GetCommandLineW(), &argc);
if ( NULL == parg || argc < 1) {
die(_("CommandLineToArgvW failed\n"));
}
#else
argc = cmd_line->argc;
parg = cmd_line->argv;
#endif
/* allocate array for files */
end_arg = parg + argc;
/* loop by program arguments */
for (parg++; parg < end_arg; parg++) {
/* if argument is not an option */
if ((*parg)[0] != RSH_T('-') || (*parg)[1] == 0 || b_opt_end) {
/* it's a file, note that '-' is interpreted as stdin */
next_opt = new_option(cmd_line);
next_opt->name = "";
next_opt->o = &cmdline_file;
next_opt->parameter = *parg;
} else if ((*parg)[1] == L'-' && (*parg)[2] == 0) {
b_opt_end = 1; /* string "--" means end of options */
continue;
} else if ((*parg)[1] == RSH_T('-')) {
next_opt = new_option(cmd_line);
parse_long_option(next_opt, &parg);
/* process encoding and -o/-l options early */
if (is_output_modifier(next_opt->o->type)) {
apply_option(&opt, next_opt);
}
} else if ((*parg)[1] != 0) {
/* found '-'<some string> */
rsh_tchar* ptr;
/* parse short options. A string of several characters is interpreted
* as separate short options */
for (ptr = *parg + 1; *ptr; ptr++) {
cmdline_opt_t* t;
char ch = (char)*ptr;
#ifdef _WIN32
if (((unsigned)*ptr) >= 128) {
ptr[1] = 0;
fail_on_unknow_option(convert_wcs_to_str(ptr, ConvertToUtf8));
}
#endif
next_opt = new_option(cmd_line);
next_opt->buf[0] = '-', next_opt->buf[1] = ch, next_opt->buf[2] = '\0';
next_opt->name = next_opt->buf;
next_opt->parameter = NULL;
/* search for the short option */
for (t = cmdline_opt; t->type && ch != t->short1 && ch != t->short2; t++);
if (!t->type) fail_on_unknow_option(next_opt->buf);
next_opt->o = t;
if (is_param_required(t->type)) {
next_opt->parameter = (ptr[1] ? ptr + 1 : *(++parg));
if (!next_opt->parameter) {
/* note: need to check for parameter here, for early -o/-l options processing */
log_error(_("argument is required for option %s\n"), next_opt->name);
rsh_exit(2);
}
}
/* process encoding and -o/-l options early */
if (is_output_modifier(t->type)) {
apply_option(&opt, next_opt);
}
if (next_opt->parameter) break; /* a parameter ends the short options string */
}
}
} /* for */
}
/**
* Apply all parsed command line options: set binary flags, store strings,
* and do complex options handling by calling callbacks.
*
* @param cmd_line the parsed options information
*/
static void apply_cmdline_options(struct parsed_cmd_line_t* cmd_line)
{
size_t count = cmd_line->options.size;
size_t i;
for (i = 0; i < count; i++) {
parsed_option_t* o = (parsed_option_t*)rsh_blocks_vector_get_ptr(
&cmd_line->options, i, 16, sizeof(parsed_option_t));
/* process the option, if it was not applied early */
if (!is_output_modifier(o->o->type)) {
apply_option(&opt, o);
}
}
/* if no formatting options were specified at the command line */
if (!opt.printf_str && !opt.template_file && !opt.sum_flags && !opt.fmt) {
/* copy the format from config */
opt.printf_str = conf_opt.printf_str;
opt.template_file = conf_opt.template_file;
}
if (!opt.printf_str && !opt.template_file) {
if (!opt.fmt) opt.fmt = conf_opt.fmt;
if (!opt.sum_flags) opt.sum_flags = conf_opt.sum_flags;
}
if (!opt.mode && !opt.update_file) {
opt.mode = conf_opt.mode;
opt.update_file = conf_opt.update_file;
}
if (opt.update_file)
opt.mode |= MODE_UPDATE;
if (!(opt.flags & OPT_FMT_MODIFIERS))
opt.flags |= conf_opt.flags & OPT_FMT_MODIFIERS;
opt.flags |= conf_opt.flags & ~OPT_FMT_MODIFIERS; /* copy the rest of options */
if (opt.files_accept == 0) {
opt.files_accept = conf_opt.files_accept;
conf_opt.files_accept = 0;
}
if (opt.files_exclude == 0) {
opt.files_exclude = conf_opt.files_exclude;
conf_opt.files_exclude = 0;
}
if (opt.crc_accept == 0) {
opt.crc_accept = conf_opt.crc_accept;