diff options
Diffstat (limited to '')
| -rw-r--r-- | g10/misc.c | 548 |
1 files changed, 0 insertions, 548 deletions
diff --git a/g10/misc.c b/g10/misc.c deleted file mode 100644 index ae553eb47..000000000 --- a/g10/misc.c +++ /dev/null @@ -1,548 +0,0 @@ -/* misc.c - miscellaneous functions - * Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. - * - * This file is part of GnuPG. - * - * GnuPG is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * GnuPG 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 General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include <config.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> -#if defined(__linux__) && defined(__alpha__) && __GLIBC__ < 2 - #include <asm/sysinfo.h> - #include <asm/unistd.h> -#endif -#ifdef HAVE_SETRLIMIT - #include <time.h> - #include <sys/time.h> - #include <sys/resource.h> -#endif -#include "util.h" -#include "main.h" -#include "photoid.h" -#include "options.h" -#include "i18n.h" - - -const char *g10m_revision_string(int); -const char *g10c_revision_string(int); -const char *g10u_revision_string(int); - -#ifdef __GNUC__ -volatile -#endif - void -pull_in_libs(void) -{ - g10m_revision_string(0); - g10c_revision_string(0); - g10u_revision_string(0); -} - - -#if defined(__linux__) && defined(__alpha__) && __GLIBC__ < 2 -static int -setsysinfo(unsigned long op, void *buffer, unsigned long size, - int *start, void *arg, unsigned long flag) -{ - return syscall(__NR_osf_setsysinfo, op, buffer, size, start, arg, flag); -} - -void -trap_unaligned(void) -{ - unsigned int buf[2]; - - buf[0] = SSIN_UACPROC; - buf[1] = UAC_SIGBUS | UAC_NOPRINT; - setsysinfo(SSI_NVPAIRS, buf, 1, 0, 0, 0); -} -#else -void -trap_unaligned(void) -{ /* dummy */ -} -#endif - - -int -disable_core_dumps() -{ - #ifdef HAVE_DOSISH_SYSTEM - return 0; - #else - #ifdef HAVE_SETRLIMIT - struct rlimit limit; - - limit.rlim_cur = 0; - limit.rlim_max = 0; - if( !setrlimit( RLIMIT_CORE, &limit ) ) - return 0; - if( errno != EINVAL && errno != ENOSYS ) - log_fatal(_("can't disable core dumps: %s\n"), strerror(errno) ); - #endif - return 1; - #endif -} - - - -u16 -checksum_u16( unsigned n ) -{ - u16 a; - - a = (n >> 8) & 0xff; - a += n & 0xff; - return a; -} - - -u16 -checksum( byte *p, unsigned n ) -{ - u16 a; - - for(a=0; n; n-- ) - a += *p++; - return a; -} - -u16 -checksum_mpi( MPI a ) -{ - u16 csum; - byte *buffer; - unsigned nbytes; - unsigned nbits; - - buffer = mpi_get_buffer( a, &nbytes, NULL ); - nbits = mpi_get_nbits(a); - csum = checksum_u16( nbits ); - csum += checksum( buffer, nbytes ); - m_free( buffer ); - return csum; -} - -u32 -buffer_to_u32( const byte *buffer ) -{ - unsigned long a; - a = *buffer << 24; - a |= buffer[1] << 16; - a |= buffer[2] << 8; - a |= buffer[3]; - return a; -} - - -static void -no_exp_algo(void) -{ - static int did_note = 0; - - if( !did_note ) { - did_note = 1; - log_info(_("Experimental algorithms should not be used!\n")); - } -} - -void -print_pubkey_algo_note( int algo ) -{ - if( algo >= 100 && algo <= 110 ) - no_exp_algo(); -} - -void -print_cipher_algo_note( int algo ) -{ - if( algo >= 100 && algo <= 110 ) - no_exp_algo(); - else if( algo == CIPHER_ALGO_3DES - || algo == CIPHER_ALGO_CAST5 - || algo == CIPHER_ALGO_BLOWFISH - || algo == CIPHER_ALGO_TWOFISH - || algo == CIPHER_ALGO_RIJNDAEL - || algo == CIPHER_ALGO_RIJNDAEL192 - || algo == CIPHER_ALGO_RIJNDAEL256 - ) - ; - else { - static int did_note = 0; - - if( !did_note ) { - did_note = 1; - log_info(_("this cipher algorithm is deprecated; " - "please use a more standard one!\n")); - } - } -} - -void -print_digest_algo_note( int algo ) -{ - if( algo >= 100 && algo <= 110 ) - no_exp_algo(); -} - - -/* Return a string which is used as a kind of process ID */ -const byte * -get_session_marker( size_t *rlen ) -{ - static byte marker[SIZEOF_UNSIGNED_LONG*2]; - static int initialized; - - if ( !initialized ) { - volatile ulong aa, bb; /* we really want the uninitialized value */ - ulong a, b; - - initialized = 1; - /* also this marker is guessable it is not easy to use this - * for a faked control packet because an attacker does not - * have enough control about the time the verification does - * take place. Of course, we can add just more random but - * than we need the random generator even for verification - * tasks - which does not make sense. */ - a = aa ^ (ulong)getpid(); - b = bb ^ (ulong)time(NULL); - memcpy( marker, &a, SIZEOF_UNSIGNED_LONG ); - memcpy( marker+SIZEOF_UNSIGNED_LONG, &b, SIZEOF_UNSIGNED_LONG ); - } - *rlen = sizeof(marker); - return marker; -} - -/**************** - * Wrapper around the libgcrypt function with addional checks on - * openPGP contraints for the algo ID. - */ -int -openpgp_cipher_test_algo( int algo ) -{ - if( algo < 0 || algo > 110 ) - return G10ERR_CIPHER_ALGO; - return check_cipher_algo(algo); -} - -int -openpgp_pk_test_algo( int algo, unsigned int usage_flags ) -{ - if( algo < 0 || algo > 110 ) - return G10ERR_PUBKEY_ALGO; - return check_pubkey_algo2( algo, usage_flags ); -} - -int -openpgp_pk_algo_usage ( int algo ) -{ - int use = 0; - - /* they are hardwired in gpg 1.0 */ - switch ( algo ) { - case PUBKEY_ALGO_RSA: - use = PUBKEY_USAGE_SIG | PUBKEY_USAGE_ENC; - break; - case PUBKEY_ALGO_RSA_E: - use = PUBKEY_USAGE_ENC; - break; - case PUBKEY_ALGO_RSA_S: - use = PUBKEY_USAGE_SIG; - break; - case PUBKEY_ALGO_ELGAMAL_E: - use = PUBKEY_USAGE_ENC; - break; - case PUBKEY_ALGO_DSA: - use = PUBKEY_USAGE_SIG; - break; - case PUBKEY_ALGO_ELGAMAL: - use = PUBKEY_USAGE_SIG | PUBKEY_USAGE_ENC; - break; - default: - break; - } - return use; -} - -int -openpgp_md_test_algo( int algo ) -{ - if( algo < 0 || algo > 110 ) - return G10ERR_DIGEST_ALGO; - return check_digest_algo(algo); -} - -/* Special warning for the IDEA cipher */ -void -idea_cipher_warn(int show) -{ - static int warned=0; - - if(!warned || show) - { - log_info(_("the IDEA cipher plugin is not present\n")); - log_info(_("please see http://www.gnupg.org/why-not-idea.html " - "for more information\n")); - warned=1; - } -} - -/* Expand %-strings. Returns a string which must be m_freed. Returns - NULL if the string cannot be expanded (too large). */ -char * -pct_expando(const char *string,struct expando_args *args) -{ - const char *ch=string; - int idx=0,maxlen=0,done=0; - u32 pk_keyid[2]={0,0},sk_keyid[2]={0,0}; - char *ret=NULL; - - if(args->pk) - keyid_from_pk(args->pk,pk_keyid); - - if(args->sk) - keyid_from_sk(args->sk,sk_keyid); - - if(!args->pk && args->sk) - keyid_from_sk(args->sk,pk_keyid); - - while(*ch!='\0') - { - char *str=NULL; - - if(!done) - { - /* 8192 is way bigger than we'll need here */ - if(maxlen>=8192) - goto fail; - - maxlen+=1024; - ret=m_realloc(ret,maxlen); - } - - done=0; - - if(*ch=='%') - { - switch(*(ch+1)) - { - case 's': /* short key id */ - if(idx+8<maxlen) - { - sprintf(&ret[idx],"%08lX",(ulong)sk_keyid[1]); - idx+=8; - done=1; - } - break; - - case 'S': /* long key id */ - if(idx+16<maxlen) - { - sprintf(&ret[idx],"%08lX%08lX", - (ulong)sk_keyid[0],(ulong)sk_keyid[1]); - idx+=16; - done=1; - } - break; - - case 'k': /* short key id */ - if(idx+8<maxlen) - { - sprintf(&ret[idx],"%08lX",(ulong)pk_keyid[1]); - idx+=8; - done=1; - } - break; - - case 'K': /* long key id */ - if(idx+16<maxlen) - { - sprintf(&ret[idx],"%08lX%08lX", - (ulong)pk_keyid[0],(ulong)pk_keyid[1]); - idx+=16; - done=1; - } - break; - - case 'f': /* fingerprint */ - { - byte array[MAX_FINGERPRINT_LEN]; - size_t len; - int i; - - if(args->pk) - fingerprint_from_pk(args->pk,array,&len); - else - memset(array,0, (len=MAX_FINGERPRINT_LEN)); - - if(idx+(len*2)<maxlen) - { - for(i=0;i<len;i++) - { - sprintf(&ret[idx],"%02X",array[i]); - idx+=2; - } - done=1; - } - } - break; - - case 't': /* e.g. "jpg" */ - str=image_type_to_string(args->imagetype,0); - /* fall through */ - - case 'T': /* e.g. "image/jpeg" */ - if(str==NULL) - str=image_type_to_string(args->imagetype,2); - - if(idx+strlen(str)<maxlen) - { - strcpy(&ret[idx],str); - idx+=strlen(str); - done=1; - } - break; - - case '%': - if(idx+1<maxlen) - { - ret[idx++]='%'; - ret[idx]='\0'; - done=1; - } - break; - - /* Any unknown %-keys (like %i, %o, %I, and %O) are - passed through for later expansion. Note this also - handles the case where the last character in the - string is a '%' - the terminating \0 will end up here - and properly terminate the string. */ - default: - if(idx+2<maxlen) - { - ret[idx++]='%'; - ret[idx++]=*(ch+1); - ret[idx]='\0'; - done=1; - } - break; - } - - if(done) - ch++; - } - else - { - if(idx+1<maxlen) - { - ret[idx++]=*ch; - ret[idx]='\0'; - done=1; - } - } - - if(done) - ch++; - } - - return ret; - - fail: - m_free(ret); - return NULL; -} - -int -hextobyte( const char *s ) -{ - int c; - - if( *s >= '0' && *s <= '9' ) - c = 16 * (*s - '0'); - else if( *s >= 'A' && *s <= 'F' ) - c = 16 * (10 + *s - 'A'); - else if( *s >= 'a' && *s <= 'f' ) - c = 16 * (10 + *s - 'a'); - else - return -1; - s++; - if( *s >= '0' && *s <= '9' ) - c += *s - '0'; - else if( *s >= 'A' && *s <= 'F' ) - c += 10 + *s - 'A'; - else if( *s >= 'a' && *s <= 'f' ) - c += 10 + *s - 'a'; - else - return -1; - return c; -} - -void -deprecated_warning(const char *configname,unsigned int configlineno, - const char *option,const char *repl1,const char *repl2) -{ - if(configname) - { - if(strncmp("--",option,2)==0) - option+=2; - - if(strncmp("--",repl1,2)==0) - repl1+=2; - - log_info(_("%s:%d: deprecated option \"%s\"\n"), - configname,configlineno,option); - } - else - log_info(_("WARNING: \"%s\" is a deprecated option\n"),option); - - log_info(_("please use \"%s%s\" instead\n"),repl1,repl2); -} - -const char * -compress_algo_to_string(int algo) -{ - const char *s="?"; - - switch(algo) - { - case 0: - s="Uncompressed"; - break; - - case 1: - s="ZIP"; - break; - - case 2: - s="ZLIB"; - break; - } - - return s; -} - -int -check_compress_algo(int algo) -{ - if(algo>=0 && algo<=2) - return 0; - - return G10ERR_COMPR_ALGO; -} |