diff options
Diffstat (limited to 'libotr/libgpg-error-1.42/src/argparse.c')
| -rw-r--r-- | libotr/libgpg-error-1.42/src/argparse.c | 2852 |
1 files changed, 2852 insertions, 0 deletions
diff --git a/libotr/libgpg-error-1.42/src/argparse.c b/libotr/libgpg-error-1.42/src/argparse.c new file mode 100644 index 0000000..cb5c58c --- /dev/null +++ b/libotr/libgpg-error-1.42/src/argparse.c @@ -0,0 +1,2852 @@ +/* argparse.c - Argument Parser for option handling + * Copyright (C) 1997-2001, 2006-2008, 2013-2017 Werner Koch + * Copyright (C) 1998-2001, 2006-2008, 2012 Free Software Foundation, Inc. + * Copyright (C) 2015-2020 g10 Code GmbH + * + * This file is part of Libgpg-error. + * + * This file is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * This file 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 Lesser General Public License + * along with this program; if not, see <https://www.gnu.org/licenses/>. + * SPDX-License-Identifier: LGPL-2.1-or-later + * + * This file was originally a part of GnuPG. + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> +#include <string.h> +#include <stdarg.h> +#include <limits.h> +#include <errno.h> +#include <unistd.h> +#include <time.h> + +#include "gpgrt-int.h" + +#ifdef HAVE_W32_SYSTEM +# define PATHSEP_C ';' +# define DIRSEP_C '\\' +#else +# define PATHSEP_C ':' +# define DIRSEP_C '/' +#endif + + +/* The malloced configuration directories or NULL. */ +static struct +{ + char *user; + char *sys; +} confdir; + + +/* Hidden argparse flag used to mark the object as initialized. */ +#define ARGPARSE_FLAG__INITIALIZED (1u << ((8*SIZEOF_INT)-1)) + +/* Special short options which are auto-inserterd. Must fit into an + * unsigned short. */ +#define ARGPARSE_SHORTOPT_HELP 32768 +#define ARGPARSE_SHORTOPT_VERSION 32769 +#define ARGPARSE_SHORTOPT_WARRANTY 32770 +#define ARGPARSE_SHORTOPT_DUMP_OPTIONS 32771 +#define ARGPARSE_SHORTOPT_DUMP_OPTTBL 32772 + + +/* The states for the gpgrt_argparser machinery. */ +enum argparser_states + { + STATE_init = 0, + STATE_open_sys, + STATE_open_user, + STATE_open_cmdline, + STATE_read_sys, + STATE_read_user, + STATE_read_cmdline, + STATE_finished + }; + + +/* An internal object used to store the user provided option table and + * some meta information. */ +typedef struct +{ + unsigned short short_opt; + unsigned short ordinal; /* (for --help) */ + unsigned int flags; + const char *long_opt; /* Points into the user provided table. */ + const char *description; /* Points into the user provided table. */ + unsigned int forced:1; /* Forced to use the sysconf value. */ + unsigned int ignore:1; /* Ignore this option everywhere but in + * the sysconf file. */ + unsigned int explicit_ignore:1; /* Ignore was explicitly set. */ +} opttable_t; + + +/* Internal object of the public gpgrt_argparse_t object. */ +struct _gpgrt_argparse_internal_s +{ + int idx; /* Note that this is saved and restored in _gpgrt_argparser. */ + int inarg; /* (index into args) */ + unsigned int verbose:1; /* Print diagnostics. */ + unsigned int stopped:1; /* Option processing has stopped. */ + unsigned int in_sysconf:1; /* Processing global config file. */ + unsigned int mark_forced:1; /* Mark options as forced. */ + unsigned int mark_ignore:1; /* Mark options as to be ignored. */ + unsigned int explicit_ignore:1; /* Option has explicitly been set + * to ignore or unignore. */ + unsigned int ignore_all_seen:1; /* [ignore-all] has been seen. */ + unsigned int user_seen:1; /* A [user] has been seen. */ + unsigned int user_wildcard:1; /* A [user *] has been seen. */ + unsigned int user_any_active:1; /* Any user section was active. */ + unsigned int user_active:1; /* User section active. */ + unsigned int explicit_confopt:1; /* A conffile option has been given. */ + char *explicit_conffile; /* Malloced name of an explicit + * conffile. */ + char *username; /* Malloced current user name. */ + unsigned int opt_flags; /* Current option flags. */ + enum argparser_states state; /* State of the gpgrt_argparser. */ + const char *last; + void *aliases; + const void *cur_alias; + void *iio_list; + estream_t conffp; + char *confname; + opttable_t *opts; /* Malloced option table. */ + unsigned int nopts; /* Number of items in OPTS. */ +}; + + +typedef struct alias_def_s *ALIAS_DEF; +struct alias_def_s { + ALIAS_DEF next; + char *name; /* malloced buffer with name, \0, value */ + const char *value; /* ptr into name */ +}; + + +/* Object to store the names for the --ignore-invalid-option option. + This is a simple linked list. */ +typedef struct iio_item_def_s *IIO_ITEM_DEF; +struct iio_item_def_s +{ + IIO_ITEM_DEF next; + char name[1]; /* String with the long option name. */ +}; + + +/* The almost always needed user handler for strusage. */ +static const char *(*strusage_handler)( int ) = NULL; +/* Optional handler to write strings. See _gpgrt_set_usage_outfnc. */ +static int (*custom_outfnc) (int, const char *); +/* Optional handler to map strings. See _gpgrt_set_fixed_string_mapper. */ +static const char *(*fixed_string_mapper)(const char*); + +static int set_opt_arg (gpgrt_argparse_t *arg, unsigned int flags, char *s); +static void show_help (opttable_t *opts, unsigned int nopts,unsigned int flags); +static void show_version (void); +static void dump_option_table (gpgrt_argparse_t *arg); +static int writestrings (int is_error, const char *string, + ...) GPGRT_ATTR_SENTINEL(0); +static int arg_parse (gpgrt_argparse_t *arg, gpgrt_opt_t *opts, int no_init); + + + + + +/* Return true if the native charset is utf-8. */ +static int +is_native_utf8 (void) +{ + static char result; + + if (!result) + { + const char *p = _gpgrt_strusage (8); + if (!p || !*p || !strcmp (p, "utf-8")) + result = 1; + result |= 128; + } + + return (result & 1); +} + + +static char * +trim_spaces (char *str) +{ + char *string, *p, *mark; + + string = str; + /* Find first non space character. */ + for (p=string; *p && isspace (*(unsigned char*)p) ; p++) + ; + /* Move characters. */ + for ((mark = NULL); (*string = *p); string++, p++) + if (isspace (*(unsigned char*)p)) + { + if (!mark) + mark = string; + } + else + mark = NULL; + if (mark) + *mark = '\0' ; /* Remove trailing spaces. */ + + return str ; +} + + +static const char * +map_fixed_string (const char *string) +{ + return fixed_string_mapper? fixed_string_mapper (string) : string; +} + + +/* Write STRING and all following const char * arguments either to + stdout or, if IS_ERROR is set, to stderr. The list of strings must + be terminated by a NULL. */ +static int +writestrings (int is_error, const char *string, ...) +{ + va_list arg_ptr; + const char *s; + int count = 0; + + if (string) + { + s = string; + va_start (arg_ptr, string); + do + { + if (custom_outfnc) + custom_outfnc (is_error? 2:1, s); + else + _gpgrt_fputs (s, is_error? es_stderr : es_stdout); + count += strlen (s); + } + while ((s = va_arg (arg_ptr, const char *))); + va_end (arg_ptr); + } + return count; +} + + +static void +flushstrings (int is_error) +{ + if (custom_outfnc) + custom_outfnc (is_error? 2:1, NULL); + else + _gpgrt_fflush (is_error? es_stderr : es_stdout); +} + + +static void +deinitialize (gpgrt_argparse_t *arg) +{ + if (arg->internal) + { + xfree (arg->internal->username); + xfree (arg->internal->explicit_conffile); + xfree (arg->internal->opts); + xfree (arg->internal); + arg->internal = NULL; + } + + arg->flags &= ARGPARSE_FLAG__INITIALIZED; + arg->lineno = 0; + arg->err = 0; +} + +/* Our own exit handler to clean up used memory. */ +static void +my_exit (gpgrt_argparse_t *arg, int code) +{ + deinitialize (arg); + exit (code); +} + + +static gpg_err_code_t +initialize (gpgrt_argparse_t *arg, gpgrt_opt_t *opts, estream_t fp) +{ + /* We use a dedicated flag to detect whether *ARG has been + * initialized. This is because the old version of that struct, as + * used in GnuPG, had no requirement to zero out all fields of the + * object and existing code still sets only argc,argv and flags. */ + if (!(arg->flags & ARGPARSE_FLAG__INITIALIZED) + || (arg->flags & ARGPARSE_FLAG_RESET) + || !arg->internal) + { + /* Allocate internal data. */ + if (!(arg->flags & ARGPARSE_FLAG__INITIALIZED) || !arg->internal) + { + arg->internal = xtrymalloc (sizeof *arg->internal); + if (!arg->internal) + return _gpg_err_code_from_syserror (); + arg->flags |= ARGPARSE_FLAG__INITIALIZED; /* Mark as initialized. */ + } + else if (arg->internal->opts) + xfree (arg->internal->opts); + arg->internal->opts = NULL; + arg->internal->nopts = 0; + + /* Initialize this instance. */ + arg->internal->idx = 0; + arg->internal->last = NULL; + arg->internal->inarg = 0; + arg->internal->stopped = 0; + arg->internal->in_sysconf = 0; + arg->internal->user_seen = 0; + arg->internal->user_wildcard = 0; + arg->internal->user_any_active = 0; + arg->internal->user_active = 0; + arg->internal->username = NULL; + arg->internal->mark_forced = 0; + arg->internal->mark_ignore = 0; + arg->internal->explicit_ignore = 0; + arg->internal->ignore_all_seen = 0; + arg->internal->explicit_confopt = 0; + arg->internal->explicit_conffile = NULL; + arg->internal->opt_flags = 0; + arg->internal->state = STATE_init; + arg->internal->aliases = NULL; + arg->internal->cur_alias = NULL; + arg->internal->iio_list = NULL; + arg->internal->conffp = NULL; + arg->internal->confname = NULL; + + /* Clear the copy of the option list. */ + /* Clear the error indicator. */ + arg->err = 0; + + /* Usually an option file will be parsed from the start. + * However, we do not open the stream and thus we have no way to + * know the current lineno. Using this flag we can allow the + * user to provide a lineno which we don't reset. */ + if (fp || arg->internal->conffp || !(arg->flags & ARGPARSE_FLAG_NOLINENO)) + arg->lineno = 0; + + /* Need to clear the reset request. */ + arg->flags &= ~ARGPARSE_FLAG_RESET; + + /* Check initial args. */ + if ( *arg->argc < 0 ) + _gpgrt_log_bug ("invalid argument passed to gpgrt_argparse\n"); + + } + + /* Create an array with pointers to the provided list of options. + * Keeping a copy is useful to sort that array and thus do a binary + * search and to allow for extra space at the end to insert the + * hidden options. An ARGPARSE_FLAG_RESET can be used to reinit + * this array. */ + if (!arg->internal->opts) + { + int seen_help = 0; + int seen_version = 0; + int seen_warranty = 0; + int seen_dump_options = 0; + int seen_dump_option_table = 0; + int i; + + for (i=0; opts[i].short_opt; i++) + { + if (opts[i].long_opt) + { + if (!strcmp(opts[i].long_opt, "help")) + seen_help = 1; + else if (!strcmp(opts[i].long_opt, "version")) + seen_version = 1; + else if (!strcmp(opts[i].long_opt, "warranty")) + seen_warranty = 1; + else if (!strcmp(opts[i].long_opt, "dump-options")) + seen_dump_options = 1; + else if (!strcmp(opts[i].long_opt, "dump-option-table")) + seen_dump_option_table = 1; + } + } + i += 5; /* The number of the above internal options. */ + i++; /* End of list marker. */ + arg->internal->opts = xtrycalloc (i, sizeof *arg->internal->opts); + if (!arg->internal->opts) + return _gpg_err_code_from_syserror (); + for(i=0; opts[i].short_opt; i++) + { + arg->internal->opts[i].short_opt = opts[i].short_opt; + arg->internal->opts[i].flags = opts[i].flags; + arg->internal->opts[i].long_opt = opts[i].long_opt; + arg->internal->opts[i].description = opts[i].description; + arg->internal->opts[i].ordinal = i; + } + + if (!seen_help) + { + arg->internal->opts[i].short_opt = ARGPARSE_SHORTOPT_HELP; + arg->internal->opts[i].flags = ARGPARSE_TYPE_NONE; + arg->internal->opts[i].long_opt = "help"; + arg->internal->opts[i].description = "@"; + arg->internal->opts[i].ordinal = i; + i++; + } + if (!seen_version) + { + arg->internal->opts[i].short_opt = ARGPARSE_SHORTOPT_VERSION; + arg->internal->opts[i].flags = ARGPARSE_TYPE_NONE; + arg->internal->opts[i].long_opt = "version"; + arg->internal->opts[i].description = "@"; + arg->internal->opts[i].ordinal = i; + i++; + } + + if (!seen_warranty) + { + arg->internal->opts[i].short_opt = ARGPARSE_SHORTOPT_WARRANTY; + arg->internal->opts[i].flags = ARGPARSE_TYPE_NONE; + arg->internal->opts[i].long_opt = "warranty"; + arg->internal->opts[i].description = "@"; + arg->internal->opts[i].ordinal = i; + i++; + } + + if (!seen_dump_option_table) + { + arg->internal->opts[i].short_opt = ARGPARSE_SHORTOPT_DUMP_OPTTBL; + arg->internal->opts[i].flags = ARGPARSE_TYPE_NONE; + arg->internal->opts[i].long_opt = "dump-option-table"; + arg->internal->opts[i].description = "@"; + arg->internal->opts[i].ordinal = i; + i++; + } + + if (!seen_dump_options) + { + arg->internal->opts[i].short_opt = ARGPARSE_SHORTOPT_DUMP_OPTIONS; + arg->internal->opts[i].flags = ARGPARSE_TYPE_NONE; + arg->internal->opts[i].long_opt = "dump-options"; + arg->internal->opts[i].description = "@"; + arg->internal->opts[i].ordinal = i; + i++; + } + /* Take care: When adding new options remember to increase the + * size of the array. */ + + arg->internal->opts[i].short_opt = 0; + + /* Note that we do not count the end marker but keep it in the + * table anyway as an extra item. */ + arg->internal->nopts = i; + } + + if (arg->err) + { + /* Last option was erroneous. */ + const char *s; + + if (!fp && arg->internal->conffp) + fp = arg->internal->conffp; + + if (fp) + { + if ( arg->r_opt == ARGPARSE_UNEXPECTED_ARG ) + s = _("argument not expected"); + else if ( arg->r_opt == ARGPARSE_READ_ERROR ) + s = _("read error"); + else if ( arg->r_opt == ARGPARSE_KEYWORD_TOO_LONG ) + s = _("keyword too long"); + else if ( arg->r_opt == ARGPARSE_MISSING_ARG ) + s = _("missing argument"); + else if ( arg->r_opt == ARGPARSE_INVALID_ARG ) + s = _("invalid argument"); + else if ( arg->r_opt == ARGPARSE_INVALID_COMMAND ) + s = _("invalid command"); + else if ( arg->r_opt == ARGPARSE_INVALID_ALIAS ) + s = _("invalid alias definition"); + else if ( arg->r_opt == ARGPARSE_PERMISSION_ERROR ) + s = _("permission error"); + else if ( arg->r_opt == ARGPARSE_OUT_OF_CORE ) + s = _("out of core"); + else if ( arg->r_opt == ARGPARSE_NO_CONFFILE ) + s = NULL; /* Error has already been printed. */ + else if ( arg->r_opt == ARGPARSE_INVALID_META ) + s = _("invalid meta command"); + else if ( arg->r_opt == ARGPARSE_UNKNOWN_META ) + s = _("unknown meta command"); + else if ( arg->r_opt == ARGPARSE_UNEXPECTED_META ) + s = _("unexpected meta command"); + else + s = _("invalid option"); + if (s) + _gpgrt_log_error ("%s:%u: %s\n", + _gpgrt_fname_get (fp), arg->lineno, s); + } + else + { + s = arg->internal->last? arg->internal->last:"[??]"; + + if ( arg->r_opt == ARGPARSE_MISSING_ARG ) + _gpgrt_log_error (_("missing argument for option \"%.50s\"\n"), s); + else if ( arg->r_opt == ARGPARSE_INVALID_ARG ) + _gpgrt_log_error (_("invalid argument for option \"%.50s\"\n"), s); + else if ( arg->r_opt == ARGPARSE_UNEXPECTED_ARG ) + _gpgrt_log_error (_("option \"%.50s\" does not expect " + "an argument\n"), s); + else if ( arg->r_opt == ARGPARSE_INVALID_COMMAND ) + _gpgrt_log_error (_("invalid command \"%.50s\"\n"), s); + else if ( arg->r_opt == ARGPARSE_AMBIGUOUS_OPTION ) + _gpgrt_log_error (_("option \"%.50s\" is ambiguous\n"), s); + else if ( arg->r_opt == ARGPARSE_AMBIGUOUS_COMMAND ) + _gpgrt_log_error (_("command \"%.50s\" is ambiguous\n"),s ); + else if ( arg->r_opt == ARGPARSE_OUT_OF_CORE ) + _gpgrt_log_error ("%s\n", _("out of core")); + else if ( arg->r_opt == ARGPARSE_PERMISSION_ERROR ) + _gpgrt_log_error ("%s\n", _("permission error")); + else if ( arg->r_opt == ARGPARSE_NO_CONFFILE) + ; /* Error has already been printed. */ + else if ( arg->r_opt == ARGPARSE_INVALID_META ) + _gpgrt_log_error ("%s\n", _("invalid meta command")); + else if ( arg->r_opt == ARGPARSE_UNKNOWN_META ) + _gpgrt_log_error ("%s\n", _("unknown meta command")); + else if ( arg->r_opt == ARGPARSE_UNEXPECTED_META ) + _gpgrt_log_error ("%s\n",_("unexpected meta command")); + else + _gpgrt_log_error (_("invalid option \"%.50s\"\n"), s); + } + if (arg->err != ARGPARSE_PRINT_WARNING) + my_exit (arg, 2); + arg->err = 0; + } + + /* Zero out the return value union. */ + arg->r.ret_str = NULL; + arg->r.ret_long = 0; + + return 0; +} + + +static void +store_alias( gpgrt_argparse_t *arg, char *name, char *value ) +{ + /* TODO: replace this dummy function with a rea one + * and fix the probelms IRIX has with (ALIAS_DEV)arg.. + * used as lvalue + */ + (void)arg; + (void)name; + (void)value; +#if 0 + ALIAS_DEF a = xmalloc( sizeof *a ); + a->name = name; + a->value = value; + a->next = (ALIAS_DEF)arg->internal->aliases; + (ALIAS_DEF)arg->internal->aliases = a; +#endif +} + + +/* Return true if KEYWORD is in the ignore-invalid-option list. */ +static int +ignore_invalid_option_p (gpgrt_argparse_t *arg, const char *keyword) +{ + IIO_ITEM_DEF item = arg->internal->iio_list; + + for (; item; item = item->next) + if (!strcmp (item->name, keyword)) + return 1; + return 0; +} + + +/* Add the keywords up to the next LF to the list of to be ignored + options. After returning FP will either be at EOF or the next + character read wll be the first of a new line. The function + returns 0 on success or true on malloc failure. */ +static int +ignore_invalid_option_add (gpgrt_argparse_t *arg, estream_t fp) +{ + IIO_ITEM_DEF item; + int c; + char name[100]; + int namelen = 0; + int ready = 0; + enum { skipWS, collectNAME, skipNAME, addNAME} state = skipWS; + + while (!ready) + { + c = _gpgrt_fgetc (fp); + if (c == '\n') + ready = 1; + else if (c == EOF) + { + c = '\n'; + ready = 1; + } + again: + switch (state) + { + case skipWS: + if (!isascii (c) || !isspace(c)) + { + namelen = 0; + state = collectNAME; + goto again; + } + break; + + case collectNAME: + if (isspace (c)) + { + state = addNAME; + goto again; + } + else if (namelen < DIM(name)-1) + name[namelen++] = c; + else /* Too long. */ + state = skipNAME; + break; + + case skipNAME: + if (isspace (c)) + { + state = skipWS; + goto again; + } + break; + + case addNAME: + name[namelen] = 0; + if (!ignore_invalid_option_p (arg, name)) + { + item = xtrymalloc (sizeof *item + namelen); + if (!item) + return 1; + strcpy (item->name, name); + item->next = (IIO_ITEM_DEF)arg->internal->iio_list; + arg->internal->iio_list = item; + } + state = skipWS; + goto again; + } + } + return 0; +} + + +/* Clear the entire ignore-invalid-option list. */ +static void +ignore_invalid_option_clear (gpgrt_argparse_t *arg) +{ + IIO_ITEM_DEF item, tmpitem; + + for (item = arg->internal->iio_list; item; item = tmpitem) + { + tmpitem = item->next; + xfree (item); + } + arg->internal->iio_list = NULL; +} + + +/* Make sure the username field is filled. Return 0 on success. */ +static int +assure_username (gpgrt_argparse_t *arg) +{ + if (!arg->internal->username) + { + arg->internal->username = _gpgrt_getusername (); + if (!arg->internal->username) + { + _gpgrt_log_error ("%s:%u: error getting current user's name: %s\n", + arg->internal->confname, arg->lineno, + _gpg_strerror (gpg_error_from_syserror ())); + /* Not necessary the correct error code but given that we + * either have a malloc error or some internal system error, + * it is the best we can do. */ + return ARGPARSE_PERMISSION_ERROR; + } + } + return 0; +} + + +/* Implementation of the "user" command. ARG is the context. ARGS is + * a non-empty string which this function is allowed to modify. */ +static int +handle_meta_user (gpgrt_argparse_t *arg, unsigned int alternate, char *args) +{ + int rc; + + (void)alternate; + + rc = assure_username (arg); + if (rc) + return rc; + + arg->internal->user_seen = 1; + if (*args == '*' && !args[1]) + { + arg->internal->user_wildcard = 1; + arg->internal->user_active = !arg->internal->user_any_active; + } + else if (arg->internal->user_wildcard) + { + /* All other user statements are ignored after a wildcard. */ + arg->internal->user_active = 0; + } + else if (!strcasecmp (args, arg->internal->username)) + { + arg->internal->user_any_active = 1; + arg->internal->user_active = 1; + } + else + { + arg->internal->user_active = 0; + } + + return 0; +} + + +/* Implementation of the "force" command. ARG is the context. A + * value of 0 for ALTERNATE is "force", a value of 1 requests an + * unforce". ARGS is the empty string and not used. */ +static int +handle_meta_force (gpgrt_argparse_t *arg, unsigned int alternate, char *args) +{ + (void)args; + + arg->internal->mark_forced = alternate? 0 : 1; + + return 0; +} + + +/* Implementation of the "ignore" command. ARG is the context. A + * value of 0 for ALTERNATE is a plain "ignore", a value of 1 request + * an "unignore, a value of 2 requests an "ignore-all". ARGS is the + * empty string and not used. */ +static int +handle_meta_ignore (gpgrt_argparse_t *arg, unsigned int alternate, char *args) +{ + (void)args; + + if (!alternate) + { + arg->internal->mark_ignore = 1; + arg->internal->explicit_ignore = 1; + } + else if (alternate == 1) + { + arg->internal->mark_ignore = 0; + arg->internal->explicit_ignore = 1; + } + else + arg->internal->ignore_all_seen = 1; + + return 0; +} + + +/* Implementation of the "echo" command. ARG is the context. If + * ALTERNATE is true the filename is not printed. ARGS is the string + * to log. */ +static int +handle_meta_echo (gpgrt_argparse_t *arg, unsigned int alternate, char *args) +{ + int rc = 0; + char *p, *pend; + + if (alternate) + _gpgrt_log_info ("%s", ""); + else + _gpgrt_log_info ("%s:%u: ", arg->internal->confname, arg->lineno); + + while (*args) + { + p = strchr (args, '$'); + if (!p) + { + _gpgrt_log_printf ("%s", args); + break; + } + *p = 0; + _gpgrt_log_printf ("%s", args); + if (p[1] == '$') + { + _gpgrt_log_printf ("$"); + args = p+2; + continue; + } + if (p[1] != '{') + { + _gpgrt_log_printf ("$"); + args = p+1; + continue; + } + pend = strchr (p+2, '}'); + if (!pend) /* No closing brace. */ + { + _gpgrt_log_printf ("$"); + args = p+1; + continue; + } + p += 2; + *pend = 0; + args = pend+1; + if (!strcmp (p, "user")) + { + rc = assure_username (arg); + if (rc) + goto leave; + _gpgrt_log_printf ("%s", arg->internal->username); + } + else if (!strcmp (p, "file")) + _gpgrt_log_printf ("%s", arg->internal->confname); + else if (!strcmp (p, "line")) + _gpgrt_log_printf ("%u", arg->lineno); + else if (!strcmp (p, "epoch")) + _gpgrt_log_printf ("%lu", (unsigned long)time (NULL)); + } + + leave: + _gpgrt_log_printf ("\n"); + return rc; +} + + +/* Implementation of the "verbose" command. ARG is the context. If + * ALTERNATE is true the verbosity is disabled. ARGS is not used. */ +static int +handle_meta_verbose (gpgrt_argparse_t *arg, unsigned int alternate, char *args) +{ + (void)args; + + if (alternate) + arg->internal->verbose = 0; + else + arg->internal->verbose = 1; + return 0; +} + +/* Handle a meta command. KEYWORD has the content inside the brackets + * with leading and trailing spaces removed. The function may modify + * KEYWORD. On success 0 is returned, on error an ARGPARSE_ error + * code is returned. */ +static int +handle_metacmd (gpgrt_argparse_t *arg, char *keyword) +{ + static struct { + const char *name; /* Name of the command. */ + unsigned short alternate; /* Use alternate version of the command. */ + unsigned short needarg:1; /* Command requires an argument. */ + unsigned short always:1; /* Command allowed in all conf files. */ + unsigned short noskip:1; /* Even done in non-active [user] mode. */ + int (*func)(gpgrt_argparse_t *arg, + unsigned int alternate, char *args); /*handler*/ + } cmds[] = + {{ "user", 0, 1, 0, 1, handle_meta_user }, + { "force", 0, 0, 0, 0, handle_meta_force }, + { "+force", 0, 0, 0, 0, handle_meta_force }, + { "-force", 1, 0, 0, 0, handle_meta_force }, + { "ignore", 0, 0, 0, 0, handle_meta_ignore }, + { "+ignore", 0, 0, 0, 0, handle_meta_ignore }, + { "-ignore", 1, 0, 0, 0, handle_meta_ignore }, + { "ignore-all", 2, 0, 0, 0, handle_meta_ignore }, + { "+ignore-all", 2, 0, 0, 0, handle_meta_ignore }, + { "verbose", 0, 0, 1, 1, handle_meta_verbose }, + { "+verbose", 0, 0, 1, 1, handle_meta_verbose }, + { "-verbose", 1, 0, 1, 1, handle_meta_verbose }, + { "echo", 0, 1, 1, 1, handle_meta_echo }, + { "-echo", 1, 1, 1, 1, handle_meta_echo }, + { "info", 0, 1, 1, 0, handle_meta_echo }, + { "-info", 1, 1, 1, 0, handle_meta_echo } + }; + char *rest; + int i; + + for (rest = keyword; *rest && !(isascii (*rest) && isspace (*rest)); rest++) + ; + if (*rest) + { + *rest++ = 0; + trim_spaces (rest); + } + + for (i=0; i < DIM (cmds); i++) + if (!strcmp (cmds[i].name, keyword)) + break; + if (!(i < DIM (cmds))) + return ARGPARSE_UNKNOWN_META; + if (cmds[i].needarg && !*rest) + return ARGPARSE_MISSING_ARG; + if (!cmds[i].needarg && *rest) + return ARGPARSE_UNEXPECTED_ARG; + if (!arg->internal->in_sysconf && !cmds[i].always) + return ARGPARSE_UNEXPECTED_META; + + if (!cmds[i].noskip + && arg->internal->in_sysconf + && arg->internal->user_seen + && !arg->internal->user_active) + return 0; /* Skip this meta command. */ + + return cmds[i].func (arg, cmds[i].alternate, rest); +} + + +/* Helper for _gpgrt_argparse. */ +static void +prepare_arg_return (gpgrt_argparse_t *arg, opttable_t *opts, + int idx, int in_alias, int set_ignore) +{ + /* No argument found at the end of the line. */ + if (in_alias) + arg->r_opt = ARGPARSE_MISSING_ARG; + else if (!(opts[idx].flags & ARGPARSE_TYPE_MASK)) + arg->r_type = ARGPARSE_TYPE_NONE; /* Does not take an arg. */ + else if ((opts[idx].flags & ARGPARSE_OPT_OPTIONAL)) + arg->r_type = ARGPARSE_TYPE_NONE; /* No optional argument. */ + else if (!(opts[idx].ignore && !opts[idx].forced) && !set_ignore) + arg->r_opt = ARGPARSE_MISSING_ARG; + + /* If the caller wants us to return the attributes or + * ignored options, or these flags in. */ + if ((arg->flags & ARGPARSE_FLAG_WITHATTR)) + { + if (opts[idx].ignore) + arg->r_type |= ARGPARSE_ATTR_IGNORE; + if (opts[idx].forced) + arg->r_type |= ARGPARSE_ATTR_FORCE; + if (set_ignore) + arg->r_type |= ARGPARSE_OPT_IGNORE; + } +} + +/**************** + * Get options from a file. + * Lines starting with '#' are comment lines. + * Syntax is simply a keyword and the argument. + * Valid keywords are all keywords from the long_opt list without + * the leading dashes. The special keywords "help", "warranty" and "version" + * are not valid here. + * The special keyword "alias" may be used to store alias definitions, + * which are later expanded like long options. + * The option + * ignore-invalid-option OPTIONNAMEs + * is recognized and updates a list of option which should be ignored if they + * are not defined. + * Caller must free returned strings. + * If called with FP set to NULL command line args are parse instead. + * + * Q: Should we allow the syntax + * keyword = value + * and accept for boolean options a value of 1/0, yes/no or true/false? + * Note: Abbreviation of options is here not allowed. + */ +int +_gpgrt_argparse (estream_t fp, gpgrt_argparse_t *arg, gpgrt_opt_t *opts_orig) +{ + enum { Ainit, + Acomment, /* In a comment line. */ + Acopykeyword, /* Collecting a keyword. */ + Awaitarg, /* Wait for an argument. */ + Acopyarg, /* Copy the argument. */ + Akeyword_eol, /* Got keyword at end of line. */ + Akeyword_spc, /* Got keyword at space. */ + Acopymetacmd, /* Copy a meta command. */ + Askipmetacmd, /* Skip spaces after metacmd. */ + Askipmetacmd2,/* Skip comment after metacmd. */ + Ametacmd, /* Process the metacmd. */ + Askipandleave /* Skip the rest of the line and then leave. */ + } state; + opttable_t *opts; + unsigned int nopts; + int i, c; + int idx = 0; + char keyword[100]; + char *buffer = NULL; + size_t buflen = 0; + int in_alias=0; + int set_ignore = 0; + int unread_buf[3]; /* We use an int so that we can store EOF. */ + int unread_buf_count = 0; + + if (arg && !opts_orig) + { + deinitialize (arg); + return 0; + } + + if (!fp) /* Divert to arg_parse() in this case. */ + return arg_parse (arg, opts_orig, 0); + + if (initialize (arg, opts_orig, fp)) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + + opts = arg->internal->opts; + nopts = arg->internal->nopts; + + /* If the LINENO is zero we assume that we are at the start of a + * file and we skip over a possible Byte Order Mark. */ + if (!arg->lineno) + { + unread_buf[0] = _gpgrt_fgetc (fp); + unread_buf[1] = _gpgrt_fgetc (fp); + unread_buf[2] = _gpgrt_fgetc (fp); + if (unread_buf[0] != 0xef + || unread_buf[1] != 0xbb + || unread_buf[2] != 0xbf) + unread_buf_count = 3; + } + + arg->internal->opt_flags = 0; + + /* Find the next keyword. */ + state = Ainit; + i = 0; + for (;;) + { + nextstate: + /* Before scanning the next char handle the keyword seen states. */ + if (state == Akeyword_eol || state == Akeyword_spc) + { + /* We are either at the end of a line or right after a + * keyword. In the latter case we need to find the keyword + * so that we can decide whether an argument is required. */ + + /* Check the keyword. */ + for (idx=0; idx < nopts; idx++ ) + { + if (opts[idx].long_opt && !strcmp (opts[idx].long_opt, keyword)) + break; + } + arg->r_opt = opts[idx].short_opt; + if (!(idx < nopts)) + { + /* The option (keyword) is not known - check for + * internal keywords before returning an error. */ + if (state == Akeyword_spc && !strcmp (keyword, "alias")) + { + in_alias = 1; + state = Awaitarg; + } + else if (!strcmp (keyword, "ignore-invalid-option")) + { + /* We might have keywords as argument - add them to + * the list of ignored keywords. Note that we + * ignore empty argument lists and thus do not to + * call the function in the Akeyword_eol state. */ + if (state == Akeyword_spc) + { + if (ignore_invalid_option_add (arg, fp)) + { + arg->r_opt = ARGPARSE_OUT_OF_CORE; + goto leave; + } + arg->lineno++; + } + state = Ainit; + i = 0; + } + else if (ignore_invalid_option_p (arg, keyword)) + { + /* This invalid option is already in the iio list. */ + state = state == Akeyword_eol? Ainit : Acomment; + i = 0; + } + else + { + arg->r_opt = ((opts[idx].flags & ARGPARSE_OPT_COMMAND) + ? ARGPARSE_INVALID_COMMAND + : ARGPARSE_INVALID_OPTION); + if (state == Akeyword_spc) + state = Askipandleave; + else + goto leave; + } + } + else if (state != Akeyword_spc + && arg->internal->in_sysconf + && arg->internal->user_seen + && !arg->internal->user_active) + { + /* We are in a [user] meta command and it is not active. + * Skip the command. */ + state = state == Akeyword_eol? Ainit : Acomment; + i = 0; + } + else if (state != Akeyword_spc + && (opts[idx].flags & ARGPARSE_OPT_IGNORE)) + { + /* Known option is configured to be ignored. Start from + * scratch (new line) or process like a comment. */ + state = state == Akeyword_eol? Ainit : Acomment; + i = 0; + } + else /* Known option */ + { + set_ignore = 0; + + if (arg->internal->in_sysconf) + { + /* Set the current forced and ignored attributes. */ + if (arg->internal->mark_forced) + opts[idx].forced = 1; + if (arg->internal->mark_ignore) + opts[idx].ignore = 1; + if (arg->internal->explicit_ignore) + opts[idx].explicit_ignore = 1; + + if (opts[idx].ignore && !opts[idx].forced) + { + if (arg->internal->verbose) + _gpgrt_log_info ("%s:%u: ignoring option \"--%s\"\n", + arg->internal->confname, + arg->lineno, + opts[idx].long_opt); + if ((arg->flags & ARGPARSE_FLAG_WITHATTR)) + set_ignore = 1; + else + { + state = state == Akeyword_eol? Ainit : Acomment; + i = 0; + goto nextstate; /* Ignore this one. */ + } + } + } + else /* Non-sysconf file */ + { /* Act upon the forced and ignored attributes. */ + if (opts[idx].ignore || opts[idx].forced) + { + if (arg->internal->verbose) + _gpgrt_log_info ("%s:%u: ignoring option \"--%s\"" + " due to attributes:%s%s\n", + arg->internal->confname, + arg->lineno, + opts[idx].long_opt, + opts[idx].forced? " forced":"", + opts[idx].ignore? " ignore":""); + if ((arg->flags & ARGPARSE_FLAG_WITHATTR)) + set_ignore = 1; + else + { + state = state == Akeyword_eol? Ainit : Acomment; + i = 0; + goto nextstate; /* Ignore this one. */ + } + } + } + + if (state == Akeyword_spc) + { + /* If we shall ignore but not set the option we skip + * the argument. Otherwise we would need to use a + * made-up but not used args in the conf file. */ + if (set_ignore || (opts[idx].ignore && !opts[idx].forced)) + { + prepare_arg_return (arg, opts, idx, 0, set_ignore); + set_ignore = 0; + state = Askipandleave; + } + else + state = Awaitarg; + } + else + { + prepare_arg_return (arg, opts, idx, 0, set_ignore); + set_ignore = 0; + goto leave; + } + + } + } /* (end state Akeyword_eol/Akeyword_spc) */ + else if (state == Ametacmd) + { + /* We are at the end of a line. */ + gpgrt_assert (*keyword == '['); + trim_spaces (keyword+1); + if (!keyword[1]) + { + arg->r_opt = ARGPARSE_INVALID_META; /* Empty. */ + goto leave; + } + c = handle_metacmd (arg, keyword+1); + if (c) + { + arg->r_opt = c; /* Return error. */ + goto leave; + } + state = Ainit; + i = 0; + } + + /* Get the next character from the line. */ + if (unread_buf_count) + c = unread_buf[3 - unread_buf_count--]; + else + c = _gpgrt_fgetc (fp); + + if (c == '\n' || c== EOF ) + { /* Handle end of line. */ + if ( c != EOF ) + arg->lineno++; + if (state == Askipandleave) + goto leave; + else if (state == Acopykeyword) + { + keyword[i] = 0; + state = Akeyword_eol; + goto nextstate; + } + else if (state == Acopymetacmd) + { + arg->r_opt = ARGPARSE_INVALID_META; /* "]" missing */ + goto leave; + } + else if (state == Askipmetacmd || state == Askipmetacmd2) + { + state = Ametacmd; + goto nextstate; + } + else if (state == Awaitarg) + { + /* No argument found at the end of the line. */ + prepare_arg_return (arg, opts, idx, in_alias, set_ignore); + set_ignore = 0; + goto leave; + } + else if (state == Acopyarg) + { + /* Has an argument at the end of a line. */ + if (in_alias) + { + if (!buffer) + arg->r_opt = ARGPARSE_UNEXPECTED_ARG; + else + { + char *p; + + buffer[i] = 0; + p = strpbrk (buffer, " \t"); + if (p) + { + *p++ = 0; + trim_spaces (p); + } + if (!p || !*p) + { + xfree (buffer); + arg->r_opt = ARGPARSE_INVALID_ALIAS; + } + else + { + store_alias (arg, buffer, p); + } + } + } + else if (!(opts[idx].flags & ARGPARSE_TYPE_MASK)) + arg->r_opt = ARGPARSE_UNEXPECTED_ARG; + else + { + char *p; + + if (!buffer) + { + keyword[i] = 0; + buffer = xtrystrdup (keyword); + if (!buffer) + arg->r_opt = ARGPARSE_OUT_OF_CORE; + } + else + buffer[i] = 0; + + if (buffer) + { + trim_spaces (buffer); + p = buffer; + if (*p == '"') + { + /* Remove quotes. */ + p++; + if (*p && p[strlen(p)-1] == '\"' ) + p[strlen(p)-1] = 0; + } + if (!set_opt_arg (arg, opts[idx].flags, p)) + xfree (buffer); + else + gpgrt_annotate_leaked_object (buffer); + } + } + goto leave; + } + else if (c == EOF) + { + ignore_invalid_option_clear (arg); + if (_gpgrt_ferror (fp)) + arg->r_opt = ARGPARSE_READ_ERROR; + else + arg->r_opt = 0; /* EOF. */ + goto leave; + } + state = Ainit; + i = 0; + } /* (end handle end of line) */ + else if (state == Askipandleave) + ; /* Skip. */ + else if (state == Ainit && isascii (c) && isspace(c)) + ; /* Skip leading white space. */ + else if (state == Ainit && c == '#' ) + state = Acomment; /* Start of a comment. */ + else if (state == Acomment || state == Askipmetacmd2) + ; /* Skip comments. */ + else if (state == Askipmetacmd) + { + if (c == '#') + state = Askipmetacmd2; + else if (!(isascii (c) && isspace(c))) + { + arg->r_opt = ARGPARSE_INVALID_META; + state = Askipandleave; + } + } + else if (state == Acopykeyword && isascii (c) && isspace(c)) + { + keyword[i] = 0; + state = Akeyword_spc; + goto nextstate; + } + else if (state == Acopymetacmd && c == ']') + { + keyword[i] = 0; + state = Askipmetacmd; + goto nextstate; + } + else if (state == Awaitarg) + { + /* Skip leading spaces of the argument. */ + if (!isascii (c) || !isspace(c)) + { + i = 0; + keyword[i++] = c; + state = Acopyarg; + } + } + else if (state == Acopyarg) + { + /* Collect the argument. */ + if (buffer) + { + if (i < buflen-1) + buffer[i++] = c; + else + { + char *tmp; + size_t tmplen = buflen + 50; + + tmp = xtryrealloc (buffer, tmplen); + if (tmp) + { + buflen = tmplen; + buffer = tmp; + buffer[i++] = c; + } + else + { + xfree (buffer); + arg->r_opt = ARGPARSE_OUT_OF_CORE; + goto leave; + } + } + } + else if (i < DIM(keyword)-1) + keyword[i++] = c; + else + { + size_t tmplen = DIM(keyword) + 50; + buffer = xtrymalloc (tmplen); + if (buffer) + { + buflen = tmplen; + memcpy(buffer, keyword, i); + buffer[i++] = c; + } + else + { + arg->r_opt = ARGPARSE_OUT_OF_CORE; + goto leave; + } + } + } + else if (i >= DIM(keyword)-1) + { + arg->r_opt = ARGPARSE_KEYWORD_TOO_LONG; + state = Askipandleave; /* Skip rest of line and leave. */ + } + else if (!i) + { + state = c == '[' ? Acopymetacmd : Acopykeyword; + keyword[i++] = c; + } + else + { + keyword[i++] = c; + } + } + + leave: + return arg->r_opt; +} + + +/* Return true if the list of options OPTS has any option marked with + * ARGPARSE_OPT_CONFFILE. */ +static int +any_opt_conffile (opttable_t *opts, unsigned int nopts) +{ + int i; + + for (i=0; i < nopts; i++ ) + if ((opts[i].flags & ARGPARSE_OPT_CONFFILE)) + return 1; + return 0; +} + + +/* Return true if FNAME is an absoluete filename. */ +static int +is_absfname (const char *fname) +{ + const char *s; + +#ifdef HAVE_W32_SYSTEM + s = strchr (fname, ':'); + if (s) + s++; + else + s = fname; +#else + s = fname; +#endif + + return (*s == '/' +#ifdef HAVE_W32_SYSTEM + || *s == DIRSEP_C +#endif + ); +} + + +/* If FNAME specifies two files of the form + * NAME1:/NAME2 (Unix) + * or + * NAME1;[x:]/NAME2 (Windows) + * return a pointer to the delimiter or NULL if there is none. + */ +static const char * +is_twopartfname (const char *fname) +{ + const char *s; + + if ((s = strchr (fname, PATHSEP_C)) && is_absfname (s+1) && s != fname) + return s; + return NULL; +} + + +/* Try to use a version-ed config file name. A version-ed config file + * name is one which has the packages version number appended. For + * example if the standard config file name is "foo.conf" and the + * version of the foo program is 1.2.3-beta1 the following config + * files are tried in order until one is readable: + * + * foo.conf-1.2.3-beta1 + * foo.conf-1.2.3 + * foo.conf-1.2 + * foo.conf-1 + * foo.conf + * + * The argument CONFIGNAME should already be expanded. On success a + * newly allocated file name is returned. On error NULL is returned. + */ +static char * +try_versioned_conffile (const char *configname) +{ + const char *version = _gpgrt_strusage (13); + char *name; + char *dash, *endp; + + if (!version || !*version) + return NULL; /* No program version known. */ + + name = _gpgrt_strconcat (configname, "-", version, NULL); + if (!name) + return NULL; /* Oops: Out of core - ignore. */ + dash = name + strlen (configname); + + endp = dash + strlen (dash) - 1; + while (endp > dash) + { + if (!_gpgrt_access (name, R_OK)) + { + return name; + } + for (; endp > dash; endp--) + { + if (*endp == '-' || *endp == '.') + { + *endp = 0; + break; + } + } + } + + _gpgrt_free (name); + return NULL; +} + + +/* This function is called after a sysconf file has been read. */ +static void +finish_read_sys (gpgrt_argparse_t *arg) +{ + opttable_t *opts = arg->internal->opts; + unsigned int nopts = arg->internal->nopts; + int i; + + if (arg->internal->ignore_all_seen) + { + /* [ignore-all] was used: Set all options which have not + * explictly been set as ignore or not ignore to ignore. */ + for (i = 0; i < nopts; i++) + { + if (!opts[i].explicit_ignore) + opts[i].ignore = 1; + } + } + + /* Reset all flags which pertain only to sysconf files. */ + arg->internal->in_sysconf = 0; + arg->internal->user_active = 0; + arg->internal->mark_forced = 0; + arg->internal->mark_ignore = 0; + arg->internal->explicit_ignore = 0; + arg->internal->ignore_all_seen = 0; +} + + +/* The full arg parser which handles option files and command line + * arguments. The behaviour depends on the combinations of CONFNAME + * and the ARGPARSE_FLAG_xxx values: + * + * | CONFNAME | SYS | USER | Action | + * |----------+-----+------+--------------------| + * | NULL | - | - | cmdline | + * | string | 0 | 1 | user, cmdline | + * | string | 1 | 0 | sys, cmdline | + * | string | 1 | 1 | sys, user, cmdline | + * + * Note that if an option has been flagged with ARGPARSE_OPT_CONFFILE + * and a type of ARGPARSE_TYPE_STRING that option is not returned but + * the specified configuration file is processed directly; if + * ARGPARSE_TYPE_NONE is used no user configuration files are + * processed and from the system configuration files only those which + * are immutable are processed. The string values for CONFNAME shall + * not include a directory part because that is taken from the values + * set by gpgrt_set_confdir. However, if CONFNAME is a twopart + * filename delimited by a colon (semicolon on Windows) with the + * second part being an absolute filename, the first part is used for + * the SYS file and the the entire second part for the USER file. + */ +int +_gpgrt_argparser (gpgrt_argparse_t *arg, gpgrt_opt_t *opts, + const char *confname) +{ + /* First check whether releasing the resources has been requested. */ + if (arg && !opts) + { + deinitialize (arg); + return 0; + } + + /* Make sure that the internal data object is ready and also print + * warnings or errors from the last iteration. */ + if (initialize (arg, opts, NULL)) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + + next_state: + switch (arg->internal->state) + { + case STATE_init: + if (arg->argc && arg->argv && *arg->argc + && any_opt_conffile (arg->internal->opts, arg->internal->nopts)) + { + /* The list of option allow for conf files + * (e.g. gpg's "--option FILE" and "--no-options") + * Now check whether one was really given on the command + * line. Note that we don't need to run this code if no + * argument array was provided. */ + int save_argc = *arg->argc; + char **save_argv = *arg->argv; + unsigned int save_flags = arg->flags; + int save_idx = arg->internal->idx; + int any_no_conffile = 0; + + arg->flags = (ARGPARSE_FLAG_KEEP | ARGPARSE_FLAG_NOVERSION + | ARGPARSE_FLAG__INITIALIZED); + while (arg_parse (arg, opts, 1)) + { + if ((arg->internal->opt_flags & ARGPARSE_OPT_CONFFILE)) + { + arg->internal->explicit_confopt = 1; + if ((arg->r_type & ARGPARSE_TYPE_MASK) == ARGPARSE_TYPE_STRING + && !arg->internal->explicit_conffile) + { + /* Store the first conffile name. All further + * conf file options are not handled. */ + arg->internal->explicit_conffile + = xtrystrdup (arg->r.ret_str); + if (!arg->internal->explicit_conffile) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + + } + else if ((arg->r_type & ARGPARSE_TYPE_MASK) + == ARGPARSE_TYPE_NONE) + any_no_conffile = 1; + } + } + if (any_no_conffile) + { + /* A NoConffile option overrides any other conf file option. */ + xfree (arg->internal->explicit_conffile); + arg->internal->explicit_conffile = NULL; + } + /* Restore parser. */ + *arg->argc = save_argc; + *arg->argv = save_argv; + arg->flags = save_flags; + arg->internal->idx = save_idx; + } + + if (confname && *confname) + { + if ((arg->flags & ARGPARSE_FLAG_SYS)) + arg->internal->state = STATE_open_sys; + else if ((arg->flags & ARGPARSE_FLAG_USER)) + arg->internal->state = STATE_open_user; + else + return (arg->r_opt = ARGPARSE_INVALID_ARG); + } + else + arg->internal->state = STATE_open_cmdline; + goto next_state; + + case STATE_open_sys: + { + /* If it is a two part name take the first part. */ + const char *s; + char *tmpname = NULL; + + if ((s = is_twopartfname (confname))) + { + tmpname = xtrymalloc (s - confname + 1); + if (!tmpname) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + memcpy (tmpname, confname, s-confname); + tmpname[s-confname] = 0; + s = tmpname; + } + else + s = confname; + xfree (arg->internal->confname); + arg->internal->confname = _gpgrt_fnameconcat + (confdir.sys? confdir.sys : "/etc", s, NULL); + _gpgrt_free (tmpname); + if (!arg->internal->confname) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + } + arg->lineno = 0; + arg->internal->idx = 0; + arg->internal->verbose = 0; + arg->internal->stopped = 0; + arg->internal->inarg = 0; + _gpgrt_fclose (arg->internal->conffp); + arg->internal->conffp = _gpgrt_fopen (arg->internal->confname, "r"); + if (!arg->internal->conffp) + { + if ((arg->flags & ARGPARSE_FLAG_VERBOSE) || arg->internal->verbose) + _gpgrt_log_info (_("Note: no default option file '%s'\n"), + arg->internal->confname); + if ((arg->flags & ARGPARSE_FLAG_USER)) + arg->internal->state = STATE_open_user; + else + arg->internal->state = STATE_open_cmdline; + goto next_state; + } + + if ((arg->flags & ARGPARSE_FLAG_VERBOSE) || arg->internal->verbose) + _gpgrt_log_info (_("reading options from '%s'\n"), + arg->internal->confname); + arg->internal->state = STATE_read_sys; + arg->internal->in_sysconf = 1; + arg->r.ret_str = xtrystrdup (arg->internal->confname); + if (!arg->r.ret_str) + arg->r_opt = ARGPARSE_OUT_OF_CORE; + else + { + gpgrt_annotate_leaked_object (arg->r.ret_str); + arg->r_opt = ARGPARSE_CONFFILE; + arg->r_type = ARGPARSE_TYPE_STRING; + } + break; + + case STATE_open_user: + if (arg->internal->explicit_confopt + && arg->internal->explicit_conffile) + { + /* An explict option to use a specific configuration file + * has been given - use that one. */ + xfree (arg->internal->confname); + arg->internal->confname + = xtrystrdup (arg->internal->explicit_conffile); + if (!arg->internal->confname) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + } + else if (arg->internal->explicit_confopt) + { + /* An explict option not to use a configuration file has + * been given - leap direct to command line reading. */ + arg->internal->state = STATE_open_cmdline; + goto next_state; + } + else + { + /* Use the standard configure file. If it is a two part + * name take the second part. If it is the standard name + * and ARGPARSE_FLAG_USERVERS is set try versioned config + * files. */ + const char *s; + char *nconf; + + xfree (arg->internal->confname); + if ((s = is_twopartfname (confname))) + { + arg->internal->confname = _gpgrt_fnameconcat (s + 1, NULL); + if (!arg->internal->confname) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + } + else + { + arg->internal->confname = _gpgrt_fnameconcat + (confdir.user? confdir.user : "~/.config", confname, NULL); + if (!arg->internal->confname) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + if ((arg->flags & ARGPARSE_FLAG_USERVERS) + && (nconf = try_versioned_conffile (arg->internal->confname))) + { + xfree (arg->internal->confname); + arg->internal->confname = nconf; + } + } + } + arg->lineno = 0; + arg->internal->idx = 0; + arg->internal->verbose = 0; + arg->internal->stopped = 0; + arg->internal->inarg = 0; + arg->internal->in_sysconf = 0; + _gpgrt_fclose (arg->internal->conffp); + arg->internal->conffp = _gpgrt_fopen (arg->internal->confname, "r"); + if (!arg->internal->conffp) + { + arg->internal->state = STATE_open_cmdline; + if (arg->internal->explicit_confopt) + { + _gpgrt_log_error (_("option file '%s': %s\n"), + arg->internal->confname, strerror (errno)); + return (arg->r_opt = ARGPARSE_NO_CONFFILE); + } + else + { + if ((arg->flags & ARGPARSE_FLAG_VERBOSE) + || arg->internal->verbose) + _gpgrt_log_info (_("Note: no default option file '%s'\n"), + arg->internal->confname); + goto next_state; + } + } + + if ((arg->flags & ARGPARSE_FLAG_VERBOSE) || arg->internal->verbose) + _gpgrt_log_info (_("reading options from '%s'\n"), + arg->internal->confname); + arg->internal->state = STATE_read_user; + arg->r.ret_str = xtrystrdup (arg->internal->confname); + if (!arg->r.ret_str) + arg->r_opt = ARGPARSE_OUT_OF_CORE; + else + { + gpgrt_annotate_leaked_object (arg->r.ret_str); + arg->r_opt = ARGPARSE_CONFFILE; + arg->r_type = ARGPARSE_TYPE_STRING; + } + break; + + case STATE_open_cmdline: + _gpgrt_fclose (arg->internal->conffp); + arg->internal->conffp = NULL; + xfree (arg->internal->confname); + arg->internal->confname = NULL; + arg->internal->idx = 0; + arg->internal->verbose = 0; + arg->internal->stopped = 0; + arg->internal->inarg = 0; + arg->internal->in_sysconf = 0; + if (!arg->argc || !arg->argv || !*arg->argv) + { + /* No or empty argument vector - don't bother to parse things. */ + arg->internal->state = STATE_finished; + goto next_state; + } + arg->r_opt = ARGPARSE_CONFFILE; + arg->r_type = ARGPARSE_TYPE_NONE; + arg->r.ret_str = NULL; + arg->internal->state = STATE_read_cmdline; + break; + + case STATE_read_sys: + arg->r_opt = _gpgrt_argparse (arg->internal->conffp, arg, opts); + if (!arg->r_opt) + { + finish_read_sys (arg); + arg->internal->state = STATE_open_user; + goto next_state; + } + if ((arg->internal->opt_flags & ARGPARSE_OPT_CONFFILE)) + goto next_state; /* Already handled - again. */ + break; + + case STATE_read_user: + arg->r_opt = _gpgrt_argparse (arg->internal->conffp, arg, opts); + if (!arg->r_opt) + { + arg->internal->state = STATE_open_cmdline; + goto next_state; + } + if ((arg->internal->opt_flags & ARGPARSE_OPT_CONFFILE)) + goto next_state; /* Already handled - again. */ + break; + + case STATE_read_cmdline: + arg->r_opt = arg_parse (arg, opts, 1); + if (!arg->r_opt) + { + arg->internal->state = STATE_finished; + goto next_state; + } + if ((arg->internal->opt_flags & ARGPARSE_OPT_CONFFILE)) + goto next_state; /* Already handled - again. */ + break; + + case STATE_finished: + arg->r_opt = 0; + break; + } + + return arg->r_opt; +} + + +/* Given the list of options in ARG and a keyword, return the index of + * the long option matching KEYWORD. On error -1 is returned for not + * found or -2 for ambigious keyword. */ +static int +find_long_option (gpgrt_argparse_t *arg, const char *keyword) +{ + int i; + size_t n; + opttable_t *opts = arg->internal->opts; + unsigned int nopts = arg->internal->nopts; + + /* Would be better if we can do a binary search, but it is not + * possible to reorder our option table because we would mess up our + * help strings. What we can do is: Build an option lookup table + * when this function is first invoked. The latter has already been + * done. */ + if (!*keyword) + return -1; + for (i=0; i < nopts; i++ ) + if (opts[i].long_opt && !strcmp (opts[i].long_opt, keyword)) + return i; +#if 0 + { + ALIAS_DEF a; + /* see whether it is an alias */ + for (a = args->internal->aliases; a; a = a->next) + { + if (!strcmp( a->name, keyword)) + { + /* todo: must parse the alias here */ + args->internal->cur_alias = a; + return -3; /* alias available */ + } + } + } +#endif + /* Not found. See whether it is an abbreviation. Aliases may not + * be abbreviated, though. */ + n = strlen (keyword); + for (i=0; i < nopts; i++) + { + if (opts[i].long_opt && !strncmp (opts[i].long_opt, keyword, n)) + { + int j; + for (j=i+1; j < nopts; j++) + { + if (opts[j].long_opt + && !strncmp (opts[j].long_opt, keyword, n) + && !(opts[j].short_opt == opts[i].short_opt + && opts[j].flags == opts[i].flags ) ) + return -2; /* Abbreviation is ambiguous. */ + } + return i; + } + } + return -1; /* Not found. */ +} + + +/* The option parser for command line options. */ +static int +arg_parse (gpgrt_argparse_t *arg, gpgrt_opt_t *opts_orig, int no_init) +{ + int idx; + opttable_t *opts; + unsigned int nopts; + int argc; + char **argv; + char *s, *s2; + int i; + + if (no_init) + ; + else if (initialize (arg, opts_orig, NULL)) + return (arg->r_opt = ARGPARSE_OUT_OF_CORE); + + opts = arg->internal->opts; + nopts = arg->internal->nopts; + argc = *arg->argc; + argv = *arg->argv; + idx = arg->internal->idx; + + if (!idx && argc && !(arg->flags & ARGPARSE_FLAG_ARG0)) + { + /* Skip the first argument. */ + argc--; argv++; idx++; + } + + next_one: + if (!argc || (s = *argv) == NULL) + { + /* No more args. */ + arg->r_opt = 0; + goto leave; /* Ready. */ + } + + arg->internal->last = s; + arg->internal->opt_flags = 0; + + if (arg->internal->stopped && (arg->flags & ARGPARSE_FLAG_ALL)) + { + arg->r_opt = ARGPARSE_IS_ARG; /* Not an option but an argument. */ + arg->r_type = ARGPARSE_TYPE_STRING; + arg->r.ret_str = s; + argc--; argv++; idx++; /* set to next one */ + } + else if (arg->internal->stopped) + { + arg->r_opt = 0; + goto leave; /* Ready. */ + } + else if ( *s == '-' && s[1] == '-' ) + { + /* Long option. */ + char *argpos; + + arg->internal->inarg = 0; + if (!s[2] && !(arg->flags & ARGPARSE_FLAG_NOSTOP)) + { + /* Stop option processing. */ + arg->internal->stopped = 1; + arg->flags |= ARGPARSE_FLAG_STOP_SEEN; + argc--; argv++; idx++; + goto next_one; + } + + argpos = strchr( s+2, '=' ); + if ( argpos ) + *argpos = 0; + i = find_long_option (arg, s+2); + if ( argpos ) + *argpos = '='; + + if (i > 0 && opts[i].short_opt == ARGPARSE_SHORTOPT_HELP) + { + show_help (opts, nopts, arg->flags); + my_exit (arg, 0); + } + else if (i > 0 && opts[i].short_opt == ARGPARSE_SHORTOPT_VERSION) + { + if (!(arg->flags & ARGPARSE_FLAG_NOVERSION)) + { + show_version (); + my_exit (arg, 0); + } + } + else if (i > 0 && opts[i].short_opt == ARGPARSE_SHORTOPT_WARRANTY) + { + writestrings (0, _gpgrt_strusage (16), "\n", NULL); + my_exit (arg, 0); + } + else if (i > 0 && opts[i].short_opt == ARGPARSE_SHORTOPT_DUMP_OPTTBL) + dump_option_table (arg); + else if (i > 0 && opts[i].short_opt == ARGPARSE_SHORTOPT_DUMP_OPTIONS) + { + for (i=0; i < nopts; i++ ) + { + if (opts[i].long_opt && !(opts[i].flags & ARGPARSE_OPT_IGNORE)) + writestrings (0, "--", opts[i].long_opt, "\n", NULL); + } + my_exit (arg, 0); + } + + if ( i == -2 ) + arg->r_opt = ARGPARSE_AMBIGUOUS_OPTION; + else if ( i == -1 ) + { + arg->r_opt = ARGPARSE_INVALID_OPTION; + arg->r.ret_str = s+2; + } + else + arg->r_opt = opts[i].short_opt; + + if ( i < 0 ) + ; + else if ( (opts[i].flags & ARGPARSE_TYPE_MASK) ) + { + if ( argpos ) + { + s2 = argpos+1; + if ( !*s2 ) + s2 = NULL; + } + else + s2 = argv[1]; + + if ( !s2 && (opts[i].flags & ARGPARSE_OPT_OPTIONAL) ) + { + arg->r_type = ARGPARSE_TYPE_NONE; /* Argument is optional. */ + } + else if ( !s2 ) + { + arg->r_opt = ARGPARSE_MISSING_ARG; + } + else if ( !argpos && *s2 == '-' + && (opts[i].flags & ARGPARSE_OPT_OPTIONAL) ) + { + /* The argument is optional and the next seems to be an + option. We do not check this possible option but + assume no argument */ + arg->r_type = ARGPARSE_TYPE_NONE; + } + else + { + set_opt_arg (arg, opts[i].flags, s2); + if ( !argpos ) + { + argc--; argv++; idx++; /* Skip one. */ + } + } + } + else + { + /* Does not take an argument. */ + if ( argpos ) + arg->r_type = ARGPARSE_UNEXPECTED_ARG; + else + { + arg->internal->opt_flags = opts[i].flags; + arg->r_type = ARGPARSE_TYPE_NONE; + } + } + argc--; argv++; idx++; /* Set to next one. */ + } + else if ( (*s == '-' && s[1]) || arg->internal->inarg ) + { + /* Short option. */ + int dash_kludge = 0; + + i = 0; + if ( !arg->internal->inarg ) + { + arg->internal->inarg++; + if ( (arg->flags & ARGPARSE_FLAG_ONEDASH) ) + { + for (i=0; i < nopts; i++ ) + if ( opts[i].long_opt && !strcmp (opts[i].long_opt, s+1)) + { + dash_kludge = 1; + break; + } + } + } + s += arg->internal->inarg; + + if (!dash_kludge ) + { + for (i=0; i < nopts; i++ ) + if ( opts[i].short_opt == *s ) + break; + } + + if ( !opts[i].short_opt && ( *s == 'h' || *s == '?' ) ) + { + show_help (opts, nopts, arg->flags); + my_exit (arg, 0); + } + + arg->r_opt = opts[i].short_opt; + if (!opts[i].short_opt ) + { + arg->r_opt = (opts[i].flags & ARGPARSE_OPT_COMMAND)? + ARGPARSE_INVALID_COMMAND:ARGPARSE_INVALID_OPTION; + arg->internal->inarg++; /* Point to the next arg. */ + arg->r.ret_str = s; + } + else if ( (opts[i].flags & ARGPARSE_TYPE_MASK) ) + { + if ( s[1] && !dash_kludge ) + { + s2 = s+1; + set_opt_arg (arg, opts[i].flags, s2); + } + else + { + s2 = argv[1]; + if ( !s2 && (opts[i].flags & ARGPARSE_OPT_OPTIONAL) ) + { + arg->r_type = ARGPARSE_TYPE_NONE; + arg->internal->opt_flags = opts[i].flags; + } + else if ( !s2 ) + { + arg->r_opt = ARGPARSE_MISSING_ARG; + } + else if ( *s2 == '-' && s2[1] + && (opts[i].flags & ARGPARSE_OPT_OPTIONAL) ) + { + /* The argument is optional and the next seems to + be an option. We do not check this possible + option but assume no argument. */ + arg->r_type = ARGPARSE_TYPE_NONE; + arg->internal->opt_flags = opts[i].flags; + } + else + { + set_opt_arg (arg, opts[i].flags, s2); + argc--; argv++; idx++; /* Skip one. */ + } + } + s = "x"; /* This is so that !s[1] yields false. */ + } + else + { + /* Does not take an argument. */ + arg->r_type = ARGPARSE_TYPE_NONE; + arg->internal->opt_flags = opts[i].flags; + arg->internal->inarg++; /* Point to the next arg. */ + } + if ( !s[1] || dash_kludge ) + { + /* No more concatenated short options. */ + arg->internal->inarg = 0; + argc--; argv++; idx++; + } + } + else if ( arg->flags & ARGPARSE_FLAG_MIXED ) + { + arg->r_opt = ARGPARSE_IS_ARG; + arg->r_type = ARGPARSE_TYPE_STRING; + arg->r.ret_str = s; + argc--; argv++; idx++; /* Set to next one. */ + } + else + { + arg->internal->stopped = 1; /* Stop option processing. */ + goto next_one; + } + + if (arg->r_opt > 0 && i >= 0 && i < nopts + && ((opts[i].ignore && opts[i].explicit_ignore) || opts[i].forced)) + { + + if ((arg->flags & ARGPARSE_FLAG_WITHATTR)) + { + if (opts[i].ignore) + arg->r_type |= ARGPARSE_ATTR_IGNORE; + if (opts[i].forced) + arg->r_type |= ARGPARSE_ATTR_FORCE; + arg->r_type |= ARGPARSE_OPT_IGNORE; + } + else + { + _gpgrt_log_info (_("Note: ignoring option \"--%s\"" + " due to global config\n"), + opts[i].long_opt); + goto next_one; /* Skip ignored/forced option. */ + } + } + + leave: + *arg->argc = argc; + *arg->argv = argv; + arg->internal->idx = idx; + return arg->r_opt; +} + + +/* Returns: -1 on error, 0 for an integer type and 1 for a non integer + type argument. */ +static int +set_opt_arg (gpgrt_argparse_t *arg, unsigned flags, char *s) +{ + int base = (flags & ARGPARSE_OPT_PREFIX)? 0 : 10; + long l; + + arg->internal->opt_flags = flags; + switch ( (arg->r_type = (flags & ARGPARSE_TYPE_MASK)) ) + { + case ARGPARSE_TYPE_LONG: + case ARGPARSE_TYPE_INT: + errno = 0; + l = strtol (s, NULL, base); + if ((l == LONG_MIN || l == LONG_MAX) && errno == ERANGE) + { + arg->r_opt = ARGPARSE_INVALID_ARG; + return -1; + } + if (arg->r_type == ARGPARSE_TYPE_LONG) + arg->r.ret_long = l; + else if ( (l < 0 && l < INT_MIN) || l > INT_MAX ) + { + arg->r_opt = ARGPARSE_INVALID_ARG; + return -1; + } + else + arg->r.ret_int = (int)l; + return 0; + + case ARGPARSE_TYPE_ULONG: + while (isascii (*s) && isspace(*s)) + s++; + if (*s == '-') + { + arg->r.ret_ulong = 0; + arg->r_opt = ARGPARSE_INVALID_ARG; + return -1; + } + errno = 0; + arg->r.ret_ulong = strtoul (s, NULL, base); + if (arg->r.ret_ulong == ULONG_MAX && errno == ERANGE) + { + arg->r_opt = ARGPARSE_INVALID_ARG; + return -1; + } + return 0; + + case ARGPARSE_TYPE_STRING: + default: + arg->r.ret_str = s; + return 1; + } +} + + +/* Return the length of the option O. This needs to consider the + * description as well as the option name. */ +static size_t +long_opt_strlen (opttable_t *o) +{ + size_t n = strlen (o->long_opt); + + if ( o->description && *o->description == '|' ) + { + const char *s; + int is_utf8 = is_native_utf8 (); + + s=o->description+1; + if ( *s != '=' ) + n++; + /* For a (mostly) correct length calculation we exclude + * continuation bytes (10xxxxxx) if we are on a native utf8 + * terminal. */ + for (; *s && *s != '|'; s++ ) + if ( is_utf8 && (*s&0xc0) != 0x80 ) + n++; + } + return n; +} + + + +/* Qsort compare for show_help. */ +static int +cmp_ordtbl (const void *a_v, const void *b_v) +{ + const unsigned short *a = a_v; + const unsigned short *b = b_v; + + return *a - *b; +} + + +/**************** + * Print formatted help. The description string has some special + * meanings: + * - A description string which is "@" suppresses help output for + * this option + * - a description which starts with a '@' and is followed by + * any other characters is printed as is; this may be used for examples + * and such. This is a legacy methiod, moder codes uses the flags + * ARGPARSE_OPT_VERBATIM or ARGPARSE_OPT_HEADER. + * - A description which starts with a '|' outputs the string between this + * bar and the next one as arguments of the long option. + */ +static void +show_help (opttable_t *opts, unsigned int nopts, unsigned int flags) +{ + const char *s; + char tmp[2]; + unsigned int *ordtbl = NULL; + + show_version (); + writestrings (0, "\n", NULL); + s = _gpgrt_strusage (42); + if (s && *s == '1') + { + s = _gpgrt_strusage (40); + writestrings (1, s, NULL); + if (*s && s[strlen(s)] != '\n') + writestrings (1, "\n", NULL); + } + s = _gpgrt_strusage(41); + writestrings (0, s, "\n", NULL); + if ( nopts ) + { + /* Auto format the option description. */ + int i,j,indent; + const char *last_header = NULL; + + ordtbl = xtrycalloc (nopts, sizeof *ordtbl); + if (!ordtbl) + { + writestrings (1, "\nOoops: Out of memory whilst printing the help.\n", + NULL); + goto leave; + } + + /* Get max. length of long options. */ + for (i=indent=0; i < nopts; i++ ) + { + if ( opts[i].long_opt ) + if ( !opts[i].description || *opts[i].description != '@' ) + if ( (j=long_opt_strlen(opts+i)) > indent && j < 35 ) + indent = j; + ordtbl[i] = opts[i].ordinal; + } + + qsort (ordtbl, nopts, sizeof *ordtbl, cmp_ordtbl); + + /* The first option needs to have a description; if not do not + * print the help at all. */ + if (!opts[ordtbl[0]].description) + goto leave; + + /* Example: " -v, --verbose Viele Sachen ausgeben" */ + indent += 10; + if ( *opts[ordtbl[0]].description != '@' + && !(opts[ordtbl[0]].flags + & (ARGPARSE_OPT_VERBATIM|ARGPARSE_OPT_HEADER))) + writestrings (0, "Options:", "\n", NULL); + for (i=0; i < nopts; i++ ) + { + s = map_fixed_string (_( opts[ordtbl[i]].description )); + if ( s && *s== '@' && !s[1] ) /* Hide this line. */ + continue; + if ( s && (opts[ordtbl[i]].flags & ARGPARSE_OPT_HEADER)) + { + /* We delay printing until we have found one real output + * line. This avoids having a header above an empty + * section. */ + last_header = s; + continue; + } + if (last_header) + { + if (*last_header) + writestrings (0, "\n", last_header, ":\n", NULL); + last_header = NULL; + } + if ( s && (opts[ordtbl[i]].flags & ARGPARSE_OPT_VERBATIM)) + { + writestrings (0, s, NULL); + continue; + } + if ( s && *s == '@' ) /* Unindented legacy comment only line. */ + { + for (s++; *s; s++ ) + { + if ( *s == '\n' ) + { + if( s[1] ) + writestrings (0, "\n", NULL); + } + else + { + tmp[0] = *s; + tmp[1] = 0; + writestrings (0, tmp, NULL); + } + } + writestrings (0, "\n", NULL); + continue; + } + + j = 3; + if ( opts[ordtbl[i]].short_opt < 256 ) + { + tmp[0] = opts[ordtbl[i]].short_opt; + tmp[1] = 0; + writestrings (0, " -", tmp, NULL ); + if ( !opts[ordtbl[i]].long_opt ) + { + if (s && *s == '|' ) + { + writestrings (0, " ", NULL); j++; + for (s++ ; *s && *s != '|'; s++, j++ ) + { + tmp[0] = *s; + tmp[1] = 0; + writestrings (0, tmp, NULL); + } + if ( *s ) + s++; + } + } + } + else + writestrings (0, " ", NULL); + if ( opts[ordtbl[i]].long_opt ) + { + tmp[0] = opts[ordtbl[i]].short_opt < 256?',':' '; + tmp[1] = 0; + j += writestrings (0, tmp, " --", opts[ordtbl[i]].long_opt, NULL); + if (s && *s == '|' ) + { + if ( *++s != '=' ) + { + writestrings (0, " ", NULL); + j++; + } + for ( ; *s && *s != '|'; s++, j++ ) + { + tmp[0] = *s; + tmp[1] = 0; + writestrings (0, tmp, NULL); + } + if ( *s ) + s++; + } + writestrings (0, " ", NULL); + j += 3; + } + for (;j < indent; j++ ) + writestrings (0, " ", NULL); + if ( s ) + { + if ( *s && j > indent ) + { + writestrings (0, "\n", NULL); + for (j=0;j < indent; j++ ) + writestrings (0, " ", NULL); + } + for (; *s; s++ ) + { + if ( *s == '\n' ) + { + if ( s[1] ) + { + writestrings (0, "\n", NULL); + for (j=0; j < indent; j++ ) + writestrings (0, " ", NULL); + } + } + else + { + tmp[0] = *s; + tmp[1] = 0; + writestrings (0, tmp, NULL); + } + } + } + writestrings (0, "\n", NULL); + } + if ( (flags & ARGPARSE_FLAG_ONEDASH) ) + writestrings (0, "\n(A single dash may be used " + "instead of the double ones)\n", NULL); + } + if ( (s=_gpgrt_strusage(19)) ) + { + writestrings (0, "\n", NULL); + writestrings (0, s, NULL); + } + + leave: + flushstrings (0); + xfree (ordtbl); +} + + +static void +show_version () +{ + const char *s; + int i; + + /* Version line. */ + writestrings (0, _gpgrt_strusage (11), NULL); + if ((s=_gpgrt_strusage (12))) + writestrings (0, " (", s, ")", NULL); + writestrings (0, " ", _gpgrt_strusage (13), "\n", NULL); + /* Additional version lines. */ + for (i=20; i < 30; i++) + if ((s=_gpgrt_strusage (i))) + writestrings (0, s, "\n", NULL); + /* Copyright string. */ + if ((s=_gpgrt_strusage (14))) + writestrings (0, s, "\n", NULL); + /* Licence string. */ + if( (s=_gpgrt_strusage (10)) ) + writestrings (0, s, "\n", NULL); + /* Copying conditions. */ + if ( (s=_gpgrt_strusage(15)) ) + writestrings (0, s, NULL); + /* Thanks. */ + if ((s=_gpgrt_strusage(18))) + writestrings (0, s, NULL); + /* Additional program info. */ + for (i=30; i < 40; i++ ) + if ( (s=_gpgrt_strusage (i)) ) + writestrings (0, s, NULL); + flushstrings (0); +} + + +/* Print the table of options with flags etc. */ +static void +dump_option_table (gpgrt_argparse_t *arg) +{ + opttable_t *opts; + unsigned int nopts; + const char *s; + char tmp[50]; + unsigned int *ordtbl = NULL; + int i; + + opts = arg->internal->opts; + nopts = arg->internal->nopts; + if (!nopts) + return; + + ordtbl = xtrycalloc (nopts, sizeof *ordtbl); + if (!ordtbl) + { + writestrings (1, "\nOoops: Out of memory whilst dumping the table.\n", + NULL); + flushstrings (1); + my_exit (arg, 2); + } + for (i=0; i < nopts; i++ ) + ordtbl[i] = opts[i].ordinal; + qsort (ordtbl, nopts, sizeof *ordtbl, cmp_ordtbl); + for (i=0; i < nopts; i++ ) + { + if (!opts[ordtbl[i]].long_opt) + continue; + writestrings (0, opts[ordtbl[i]].long_opt, ":", NULL); + snprintf (tmp, sizeof tmp, "%u:%u:", + opts[ordtbl[i]].short_opt, + opts[ordtbl[i]].flags); + writestrings (0, tmp, NULL); + s = opts[ordtbl[i]].description; + if (s) + { + for (; *s; s++) + { + if (*s == '%' || *s == ':' || *s == '\n') + snprintf (tmp, sizeof tmp, "%%%02X", *s); + else + { + tmp[0] = *s; + tmp[1] = 0; + } + writestrings (0, tmp, NULL); + } + } + writestrings (0, ":\n", NULL); + } + + flushstrings (0); + xfree (ordtbl); + my_exit (arg, 0); +} + + +void +_gpgrt_usage (int level) +{ + const char *p; + + if (!level) + { + writestrings (1, _gpgrt_strusage(11), " ", _gpgrt_strusage(13), "; ", + _gpgrt_strusage (14), "\n", NULL); + flushstrings (1); + } + else if (level == 1) + { + p = _gpgrt_strusage (40); + writestrings (1, p, NULL); + if (*p && p[strlen(p)] != '\n') + writestrings (1, "\n", NULL); + exit (2); + } + else if (level == 2) + { + p = _gpgrt_strusage (42); + if (p && *p == '1') + { + p = _gpgrt_strusage (40); + writestrings (1, p, NULL); + if (*p && p[strlen(p)] != '\n') + writestrings (1, "\n", NULL); + } + writestrings (0, _gpgrt_strusage(41), "\n", NULL); + exit (0); + } +} + +/* Level + * 0: Print copyright string to stderr + * 1: Print a short usage hint to stderr and terminate + * 2: Print a long usage hint to stdout and terminate + * 8: Return NULL for UTF-8 or string with the native charset. + * 9: Return the SPDX License tag. + * 10: Return license info string + * 11: Return the name of the program + * 12: Return optional name of package which includes this program. + * 13: version string + * 14: copyright string + * 15: Short copying conditions (with LFs) + * 16: Long copying conditions (with LFs) + * 17: Optional printable OS name + * 18: Optional thanks list (with LFs) + * 19: Bug report info + *20..29: Additional lib version strings. + *30..39: Additional program info (with LFs) + * 40: short usage note (with LF) + * 41: long usage note (with LF) + * 42: Flag string: + * First char is '1': + * The short usage notes needs to be printed + * before the long usage note. + * 95: Application flag string + * First character is '1': + * On Windows enable argument globbing + */ +const char * +_gpgrt_strusage (int level) +{ + const char *p = strusage_handler? strusage_handler(level) : NULL; + const char *tmp; + + if ( p ) + return map_fixed_string (p); + + switch ( level ) + { + + case 8: break; /* Default to utf-8. */ + case 9: + p = "GPL-3.0-or-later"; /* Suggested license. */ + break; + + case 10: + tmp = _gpgrt_strusage (9); + if (tmp && !strcmp (tmp, "GPL-2.0-or-later")) + p = ("License GNU GPL-2.0-or-later <https://gnu.org/licenses/>"); + else if (tmp && !strcmp (tmp, "LGPL-2.1-or-later")) + p = ("License GNU LGPL-2.1-or-later <https://gnu.org/licenses/>"); + else /* Default to GPLv3+. */ + p = ("License GNU GPL-3.0-or-later <https://gnu.org/licenses/gpl.html>"); + break; + case 11: p = "foo"; break; + case 13: p = "0.0"; break; + case 14: p = "Copyright (C) YEAR NAME"; break; + case 15: p = +"This is free software: you are free to change and redistribute it.\n" +"There is NO WARRANTY, to the extent permitted by law.\n"; + break; + case 16: + tmp = _gpgrt_strusage (9); + if (tmp && !strcmp (tmp, "GPL-2.0-or-later")) + p = +"This is free software; you can redistribute it and/or modify\n" +"it under the terms of the GNU General Public License as published by\n" +"the Free Software Foundation; either version 2 of the License, or\n" +"(at your option) any later version.\n\n" +"It is distributed in the hope that it will be useful,\n" +"but WITHOUT ANY WARRANTY; without even the implied warranty of\n" +"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" +"GNU General Public License for more details.\n\n" +"You should have received a copy of the GNU General Public License\n" +"along with this software. If not, see <https://gnu.org/licenses/>.\n"; + else if (tmp && !strcmp (tmp, "LGPL-2.1-or-later")) + p = +"This is free software; you can redistribute it and/or modify\n" +"it under the terms of the GNU Lesser General Public License as\n" +"published by the Free Software Foundation; either version 2.1 of\n" +"the License, or (at your option) any later version.\n\n" +"It is distributed in the hope that it will be useful,\n" +"but WITHOUT ANY WARRANTY; without even the implied warranty of\n" +"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" +"GNU Lesser General Public License for more details.\n\n" +"You should have received a copy of the GNU Lesser General Public License\n" +"along with this software. If not, see <https://gnu.org/licenses/>.\n"; + else /* Default */ + p = +"This is free software; you can redistribute it and/or modify\n" +"it under the terms of the GNU General Public License as published by\n" +"the Free Software Foundation; either version 3 of the License, or\n" +"(at your option) any later version.\n\n" +"It is distributed in the hope that it will be useful,\n" +"but WITHOUT ANY WARRANTY; without even the implied warranty of\n" +"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n" +"GNU General Public License for more details.\n\n" +"You should have received a copy of the GNU General Public License\n" +"along with this software. If not, see <https://gnu.org/licenses/>.\n"; + break; + case 40: /* short and long usage */ + case 41: p = ""; break; + } + + return p; +} + + +/* Set the usage handler. This function is basically a constructor. */ +void +_gpgrt_set_strusage (const char *(*f)(int) ) +{ + strusage_handler = f; +} + + +/* Set a function to write strings which is then used instead of + * estream. The first arg of that function is MODE and the second the + * STRING to write. A mode of 1 is used for writing to stdout and a + * mode of 2 to write to stderr. Other modes are reserved and should + * not output anything. A NULL for STRING requests a flush. */ +void +_gpgrt_set_usage_outfnc (int (*f)(int, const char *)) +{ + custom_outfnc = f; +} + + +/* Register function F as a string mapper which takes a string as + * argument, replaces known "@FOO@" style macros and returns a new + * fixed string. Warning: The input STRING must have been allocated + * statically. */ +void +_gpgrt_set_fixed_string_mapper (const char *(*f)(const char*)) +{ + fixed_string_mapper = f; +} + + +/* Register a configuration directory for use by the argparse + * functions. The defined values for WHAT are: + * + * GPGRT_CONFDIR_SYS The systems's configuration dir. + * The default is /etc + * + * GPGRT_CONFDIR_USER The user's configuration directory. + * The default is $HOME. + * + * A trailing slash is ignored; to have the function lookup + * configuration files in the current directory, use ".". There is no + * error return; more configuraion values may be added in future + * revisions of this library. + */ +void +_gpgrt_set_confdir (int what, const char *name) +{ + char *buf, *p; + + if (what == GPGRT_CONFDIR_SYS) + { + _gpgrt_free (confdir.sys); + buf = confdir.sys = _gpgrt_strdup (name); + } + else if (what == GPGRT_CONFDIR_USER) + { + _gpgrt_free (confdir.user); + buf = confdir.user = _gpgrt_strdup (name); + } + else + return; + + if (!buf) + _gpgrt_log_fatal ("out of core in %s\n", __func__); +#ifdef HAVE_W32_SYSTEM + for (p=buf; *p; p++) + if (*p == '\\') + *p = '/'; +#endif + /* Strip trailing slashes unless buf is "/" or any other single char + * string. */ + if (*buf) + { + for (p=buf + strlen (buf)-1; p > buf; p--) + if (*p == '/') + *p = 0; + else + break; + } +} |