/* strgutil.c - string utilities * Copyright (C) 1994, 1998, 1999, 2000, 2001, * 2003 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 #include #include #include #include #ifdef HAVE_LANGINFO_CODESET #include #endif /* For W32 we use dynamic loading of the iconv dll and don't need any * iconv headers at all. */ #ifndef _WIN32 # ifndef HAVE_ICONV # undef USE_GNUPG_ICONV # endif #endif #ifdef USE_GNUPG_ICONV # include # ifndef _WIN32 # include # endif #endif #include "types.h" #include "util.h" #include "memory.h" #include "i18n.h" #include "dynload.h" #ifndef USE_GNUPG_ICONV static ushort koi8_unicode[128] = { 0x2500,0x2502,0x250c,0x2510,0x2514,0x2518,0x251c,0x2524, 0x252c,0x2534,0x253c,0x2580,0x2584,0x2588,0x258c,0x2590, 0x2591,0x2592,0x2593,0x2320,0x25a0,0x2219,0x221a,0x2248, 0x2264,0x2265,0x00a0,0x2321,0x00b0,0x00b2,0x00b7,0x00f7, 0x2550,0x2551,0x2552,0x0451,0x2553,0x2554,0x2555,0x2556, 0x2557,0x2558,0x2559,0x255a,0x255b,0x255c,0x255d,0x255e, 0x255f,0x2560,0x2561,0x0401,0x2562,0x2563,0x2564,0x2565, 0x2566,0x2567,0x2568,0x2569,0x256a,0x256b,0x256c,0x00a9, 0x044e,0x0430,0x0431,0x0446,0x0434,0x0435,0x0444,0x0433, 0x0445,0x0438,0x0439,0x043a,0x043b,0x043c,0x043d,0x043e, 0x043f,0x044f,0x0440,0x0441,0x0442,0x0443,0x0436,0x0432, 0x044c,0x044b,0x0437,0x0448,0x044d,0x0449,0x0447,0x044a, 0x042e,0x0410,0x0411,0x0426,0x0414,0x0415,0x0424,0x0413, 0x0425,0x0418,0x0419,0x041a,0x041b,0x041c,0x041d,0x041e, 0x041f,0x042f,0x0420,0x0421,0x0422,0x0423,0x0416,0x0412, 0x042c,0x042b,0x0417,0x0428,0x042d,0x0429,0x0427,0x042a }; static ushort latin2_unicode[128] = { 0x0080,0x0081,0x0082,0x0083,0x0084,0x0085,0x0086,0x0087, 0x0088,0x0089,0x008A,0x008B,0x008C,0x008D,0x008E,0x008F, 0x0090,0x0091,0x0092,0x0093,0x0094,0x0095,0x0096,0x0097, 0x0098,0x0099,0x009A,0x009B,0x009C,0x009D,0x009E,0x009F, 0x00A0,0x0104,0x02D8,0x0141,0x00A4,0x013D,0x015A,0x00A7, 0x00A8,0x0160,0x015E,0x0164,0x0179,0x00AD,0x017D,0x017B, 0x00B0,0x0105,0x02DB,0x0142,0x00B4,0x013E,0x015B,0x02C7, 0x00B8,0x0161,0x015F,0x0165,0x017A,0x02DD,0x017E,0x017C, 0x0154,0x00C1,0x00C2,0x0102,0x00C4,0x0139,0x0106,0x00C7, 0x010C,0x00C9,0x0118,0x00CB,0x011A,0x00CD,0x00CE,0x010E, 0x0110,0x0143,0x0147,0x00D3,0x00D4,0x0150,0x00D6,0x00D7, 0x0158,0x016E,0x00DA,0x0170,0x00DC,0x00DD,0x0162,0x00DF, 0x0155,0x00E1,0x00E2,0x0103,0x00E4,0x013A,0x0107,0x00E7, 0x010D,0x00E9,0x0119,0x00EB,0x011B,0x00ED,0x00EE,0x010F, 0x0111,0x0144,0x0148,0x00F3,0x00F4,0x0151,0x00F6,0x00F7, 0x0159,0x016F,0x00FA,0x0171,0x00FC,0x00FD,0x0163,0x02D9 }; #endif /*!USE_GNUPG_ICONV*/ #ifndef MB_LEN_MAX #define MB_LEN_MAX 16 #endif static const char *active_charset_name = "iso-8859-1"; static ushort *active_charset = NULL; static int no_translation = 0; static int use_iconv = 0; #ifdef _WIN32 typedef void* iconv_t; #ifndef ICONV_CONST #define ICONV_CONST const #endif iconv_t (* __stdcall iconv_open) (const char *tocode, const char *fromcode); size_t (* __stdcall iconv) (iconv_t cd, const char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft); int (* __stdcall iconv_close) (iconv_t cd); #endif /*_WIN32*/ #ifdef _WIN32 static int load_libiconv (void) { static int done; if (!done) { void *handle; done = 1; /* Do it right now because we might get called recursivly through gettext. */ handle = dlopen ("iconv.dll", RTLD_LAZY); if (handle) { iconv_open = dlsym (handle, "libiconv_open"); if (iconv_open) iconv = dlsym (handle, "libiconv"); if (iconv) iconv_close = dlsym (handle, "libiconv_close"); } if (!handle || !iconv_close) { log_info (_("error loading `%s': %s\n"), "iconv.dll", dlerror ()); log_info(_("please see http://www.gnupg.org/download/iconv.html " "for more information\n")); iconv_open = NULL; iconv = NULL; iconv_close = NULL; if (handle) dlclose (handle); } } return iconv_open? 0: -1; } #endif /* _WIN32 */ void free_strlist( STRLIST sl ) { STRLIST sl2; for(; sl; sl = sl2 ) { sl2 = sl->next; m_free(sl); } } STRLIST add_to_strlist( STRLIST *list, const char *string ) { STRLIST sl; sl = m_alloc( sizeof *sl + strlen(string)); sl->flags = 0; strcpy(sl->d, string); sl->next = *list; *list = sl; return sl; } /**************** * Same as add_to_strlist() but if is_utf8 is *not* set a conversion * to UTF8 is done */ STRLIST add_to_strlist2( STRLIST *list, const char *string, int is_utf8 ) { STRLIST sl; if( is_utf8 ) sl = add_to_strlist( list, string ); else { char *p = native_to_utf8( string ); sl = add_to_strlist( list, p ); m_free( p ); } return sl; } STRLIST append_to_strlist( STRLIST *list, const char *string ) { STRLIST r, sl; sl = m_alloc( sizeof *sl + strlen(string)); sl->flags = 0; strcpy(sl->d, string); sl->next = NULL; if( !*list ) *list = sl; else { for( r = *list; r->next; r = r->next ) ; r->next = sl; } return sl; } STRLIST append_to_strlist2( STRLIST *list, const char *string, int is_utf8 ) { STRLIST sl; if( is_utf8 ) sl = append_to_strlist( list, string ); else { char *p = native_to_utf8( string ); sl = append_to_strlist( list, p ); m_free( p ); } return sl; } STRLIST strlist_prev( STRLIST head, STRLIST node ) { STRLIST n; for(n=NULL; head && head != node; head = head->next ) n = head; return n; } STRLIST strlist_last( STRLIST node ) { if( node ) for( ; node->next ; node = node->next ) ; return node; } char * pop_strlist( STRLIST *list ) { char *str=NULL; STRLIST sl=*list; if(sl) { str=m_alloc(strlen(sl->d)+1); strcpy(str,sl->d); *list=sl->next; m_free(sl); } return str; } /**************** * Look for the substring SUB in buffer and return a pointer to that * substring in BUF or NULL if not found. * Comparison is case-insensitive. */ const char * memistr( const char *buf, size_t buflen, const char *sub ) { const byte *t, *s ; size_t n; for( t=buf, n=buflen, s=sub ; n ; t++, n-- ) if( toupper(*t) == toupper(*s) ) { for( buf=t++, buflen = n--, s++; n && toupper(*t) == toupper(*s); t++, s++, n-- ) ; if( !*s ) return buf; t = buf; n = buflen; s = sub ; } return NULL ; } const char * ascii_memistr( const char *buf, size_t buflen, const char *sub ) { const byte *t, *s ; size_t n; for( t=buf, n=buflen, s=sub ; n ; t++, n-- ) if( ascii_toupper(*t) == ascii_toupper(*s) ) { for( buf=t++, buflen = n--, s++; n && ascii_toupper(*t) == ascii_toupper(*s); t++, s++, n-- ) ; if( !*s ) return buf; t = buf; n = buflen; s = sub ; } return NULL ; } /* Like strncpy() but copy at max N-1 bytes and append a '\0'. With * N given as 0 nothing is copied at all. With DEST given as NULL * sufficient memory is allocated using m_alloc (note that m_alloc is * guaranteed to succeed or to abort the process). */ char * mem2str( char *dest , const void *src , size_t n ) { char *d; const char *s; if( n ) { if( !dest ) dest = m_alloc( n ) ; d = dest; s = src ; for(n--; n && *s; n-- ) *d++ = *s++; *d = '\0' ; } return dest ; } /* * Remove leading and trailing white spaces */ char * trim_spaces( char *str ) { char *string, *p, *mark; string = str; /* Find first non space character. */ for( p=string; *p && isspace( *(byte*)p ) ; p++ ) ; /* Move characters. */ for( (mark = NULL); (*string = *p); string++, p++ ) if( isspace( *(byte*)p ) ) { if( !mark ) mark = string ; } else mark = NULL ; if( mark ) *mark = '\0' ; /* Remove trailing spaces. */ return str ; } unsigned int trim_trailing_chars( byte *line, unsigned len, const char *trimchars ) { byte *p, *mark; unsigned n; for(mark=NULL, p=line, n=0; n < len; n++, p++ ) { if( strchr(trimchars, *p ) ) { if( !mark ) mark = p; } else mark = NULL; } if( mark ) { *mark = 0; return mark - line; } return len; } /**************** * Remove trailing white spaces and return the length of the buffer */ unsigned trim_trailing_ws( byte *line, unsigned len ) { return trim_trailing_chars( line, len, " \t\r\n" ); } unsigned int check_trailing_chars( const byte *line, unsigned int len, const char *trimchars ) { const byte *p, *mark; unsigned int n; for(mark=NULL, p=line, n=0; n < len; n++, p++ ) { if( strchr(trimchars, *p ) ) { if( !mark ) mark = p; } else mark = NULL; } if( mark ) { return mark - line; } return len; } /**************** * Remove trailing white spaces and return the length of the buffer */ unsigned int check_trailing_ws( const byte *line, unsigned int len ) { return check_trailing_chars( line, len, " \t\r\n" ); } int string_count_chr( const char *string, int c ) { int count; for(count=0; *string; string++ ) if( *string == c ) count++; return count; } #ifdef USE_GNUPG_ICONV static void handle_iconv_error (const char *to, const char *from, int use_fallback) { if (errno == EINVAL) log_info (_("conversion from `%s' to `%s' not available\n"), from, to); else log_info (_("iconv_open failed: %s\n"), strerror (errno)); if (use_fallback) { /* To avoid further error messages we fallback to Latin-1 for the native encoding. This is justified as one can expect that on a utf-8 enabled system nl_langinfo() will work and thus we won't never get to here. Thus Latin-1 seems to be a reasonable default. */ active_charset_name = "iso-8859-1"; no_translation = 0; active_charset = NULL; use_iconv = 0; } } #endif /*USE_GNUPG_ICONV*/ int set_native_charset( const char *newset ) { const char *full_newset; if (!newset) { #ifdef _WIN32 static char codepage[30]; unsigned int cpno; const char *aliases; /* We are a console program thus we need to use the GetConsoleOutputCP function and not the the GetACP which would give the codepage for a GUI program. Note this is not a bulletproof detection because GetConsoleCP might return a different one for console input. Not sure how to cope with that. If the console Code page is not known we fall back to the system code page. */ cpno = GetConsoleOutputCP (); if (!cpno) cpno = GetACP (); sprintf (codepage, "CP%u", cpno ); /* Resolve alias. We use a long string string and not the usual array to optimize if the code is taken to a DSO. Taken from libiconv 1.9.2. */ newset = codepage; for (aliases = ("CP936" "\0" "GBK" "\0" "CP1361" "\0" "JOHAB" "\0" "CP20127" "\0" "ASCII" "\0" "CP20866" "\0" "KOI8-R" "\0" "CP21866" "\0" "KOI8-RU" "\0" "CP28591" "\0" "ISO-8859-1" "\0" "CP28592" "\0" "ISO-8859-2" "\0" "CP28593" "\0" "ISO-8859-3" "\0" "CP28594" "\0" "ISO-8859-4" "\0" "CP28595" "\0" "ISO-8859-5" "\0" "CP28596" "\0" "ISO-8859-6" "\0" "CP28597" "\0" "ISO-8859-7" "\0" "CP28598" "\0" "ISO-8859-8" "\0" "CP28599" "\0" "ISO-8859-9" "\0" "CP28605" "\0" "ISO-8859-15" "\0"); *aliases; aliases += strlen (aliases) + 1, aliases += strlen (aliases) + 1) { if (!strcmp (codepage, aliases) ||(*aliases == '*' && !aliases[1])) { newset = aliases + strlen (aliases) + 1; break; } } #else #ifdef HAVE_LANGINFO_CODESET newset = nl_langinfo (CODESET); #else /* !HAVE_LANGINFO_CODESET */ /* Try to get the used charset from environment variables. */ static char codepage[30]; const char *lc, *dot, *mod; strcpy (codepage, "iso-8859-1"); lc = getenv ("LC_ALL"); if (!lc || !*lc) { lc = getenv ("LC_CTYPE"); if (!lc || !*lc) lc = getenv ("LANG"); } if (lc && *lc) { dot = strchr (lc, '.'); if (dot) { mod = strchr (++dot, '@'); if (!mod) mod = dot + strlen (dot); if (mod - dot < sizeof codepage && dot != mod) { memcpy (codepage, dot, mod - dot); codepage [mod - dot] = 0; } } } newset = codepage; #endif /* !HAVE_LANGINFO_CODESET */ #endif } full_newset = newset; if (strlen (newset) > 3 && !ascii_memcasecmp (newset, "iso", 3)) { newset += 3; if (*newset == '-' || *newset == '_') newset++; } /* Note that we silently assume that plain ASCII is actually meant as Latin-1. This makes sense because many Unix system don't have their locale set up properly and thus would get annoying error messages and we have to handle all the "bug" reports. Latin-1 has always been the character set used for 8 bit characters on Unix systems. */ if( !*newset || !ascii_strcasecmp (newset, "8859-1" ) || !ascii_strcasecmp (newset, "646" ) || !ascii_strcasecmp (newset, "ASCII" ) || !ascii_strcasecmp (newset, "ANSI_X3.4-1968" ) ) { active_charset_name = "iso-8859-1"; no_translation = 0; active_charset = NULL; use_iconv = 0; } else if( !ascii_strcasecmp (newset, "utf8" ) || !ascii_strcasecmp(newset, "utf-8") ) { active_charset_name = "utf-8"; no_translation = 1; active_charset = NULL; use_iconv = 0; } #ifdef USE_GNUPG_ICONV else { iconv_t cd; #ifdef _WIN32 if (load_libiconv ()) return G10ERR_GENERAL; #endif /*_WIN32*/ cd = iconv_open (full_newset, "utf-8"); if (cd == (iconv_t)-1) { handle_iconv_error (full_newset, "utf-8", 0); return G10ERR_GENERAL; } iconv_close (cd); cd = iconv_open ("utf-8", full_newset); if (cd == (iconv_t)-1) { handle_iconv_error ("utf-8", full_newset, 0); return G10ERR_GENERAL; } iconv_close (cd); active_charset_name = full_newset; no_translation = 0; active_charset = NULL; use_iconv = 1; } #else /*!USE_GNUPG_ICONV*/ else if( !ascii_strcasecmp( newset, "8859-2" ) ) { active_charset_name = "iso-8859-2"; no_translation = 0; active_charset = latin2_unicode; use_iconv = 0; } else if( !ascii_strcasecmp( newset, "koi8-r" ) ) { active_charset_name = "koi8-r"; no_translation = 0; active_charset = koi8_unicode; use_iconv = 0; } else return G10ERR_GENERAL; #endif /*!USE_GNUPG_ICONV*/ return 0; } const char* get_native_charset() { return active_charset_name; } /**************** * Convert string, which is in native encoding to UTF8 and return the * new allocated UTF8 string. */ char * native_to_utf8( const char *string ) { const byte *s; char *buffer; byte *p; size_t length=0; if (no_translation) { /* Already utf-8 encoded. */ buffer = m_strdup (string); } else if( !active_charset && !use_iconv) /* Shortcut implementation for Latin-1. */ { for(s=string; *s; s++ ) { length++; if( *s & 0x80 ) length++; } buffer = m_alloc( length + 1 ); for(p=buffer, s=string; *s; s++ ) { if( *s & 0x80 ) { *p++ = 0xc0 | ((*s >> 6) & 3); *p++ = 0x80 | ( *s & 0x3f ); } else *p++ = *s; } *p = 0; } else /* Need to use a translation table. */ { #ifdef USE_GNUPG_ICONV iconv_t cd; const char *inptr; char *outptr; size_t inbytes, outbytes; cd = iconv_open ("utf-8", active_charset_name); if (cd == (iconv_t)-1) { handle_iconv_error ("utf-8", active_charset_name, 1); return native_to_utf8 (string); } for (s=string; *s; s++ ) { length++; if ((*s & 0x80)) length += 5; /* We may need up to 6 bytes for the utf8 output. */ } buffer = m_alloc (length + 1); inptr = string; inbytes = strlen (string); outptr = buffer; outbytes = length; if ( iconv (cd, (ICONV_CONST char **)&inptr, &inbytes, &outptr, &outbytes) == (size_t)-1) { log_info (_("conversion from `%s' to `%s' failed: %s\n"), active_charset_name, "utf-8", strerror (errno)); /* We don't do any conversion at all but use the strings as is. */ strcpy (buffer, string); } else /* Success. */ { *outptr = 0; /* We could realloc the buffer now but I doubt that it makes much sense given that it will get freed anyway soon after. */ } iconv_close (cd); #else /*!USE_GNUPG_ICONV*/ for(s=string; *s; s++ ) { length++; if( *s & 0x80 ) length += 2; /* We may need up to 3 bytes. */ } buffer = m_alloc( length + 1 ); for(p=buffer, s=string; *s; s++ ) { if( *s & 0x80 ) { ushort val = active_charset[ *s & 0x7f ]; if( val < 0x0800 ) { *p++ = 0xc0 | ( (val >> 6) & 0x1f ); *p++ = 0x80 | ( val & 0x3f ); } else { *p++ = 0xe0 | ( (val >> 12) & 0x0f ); *p++ = 0x80 | ( (val >> 6) & 0x3f ); *p++ = 0x80 | ( val & 0x3f ); } } else *p++ = *s; } *p = 0; #endif /*!USE_GNUPG_ICONV*/ } return buffer; } /**************** * Convert string, which is in UTF8 to native encoding. illegal * encodings by some "\xnn" and quote all control characters. A * character with value DELIM will always be quoted, it must be a * vanilla ASCII character. A DELIM value of -1 is special: it disables * all quoting of control characters. */ char * utf8_to_native( const char *string, size_t length, int delim ) { int nleft; int i; byte encbuf[8]; int encidx; const byte *s; size_t n; byte *buffer = NULL, *p = NULL; unsigned long val = 0; size_t slen; int resync = 0; /* 1. pass (p==NULL): count the extended utf-8 characters */ /* 2. pass (p!=NULL): create string */ for( ;; ) { for( slen=length, nleft=encidx=0, n=0, s=string; slen; s++, slen-- ) { if( resync ) { if( !(*s < 128 || (*s >= 0xc0 && *s <= 0xfd)) ) { /* still invalid */ if( p ) { sprintf(p, "\\x%02x", *s ); p += 4; } n += 4; continue; } resync = 0; } if( !nleft ) { if( !(*s & 0x80) ) { /* plain ascii */ if( delim != -1 && (*s < 0x20 || *s == 0x7f || *s == delim || (delim && *s=='\\'))) { n++; if( p ) *p++ = '\\'; switch( *s ) { case '\n': n++; if( p ) *p++ = 'n'; break; case '\r': n++; if( p ) *p++ = 'r'; break; case '\f': n++; if( p ) *p++ = 'f'; break; case '\v': n++; if( p ) *p++ = 'v'; break; case '\b': n++; if( p ) *p++ = 'b'; break; case 0 : n++; if( p ) *p++ = '0'; break; default: n += 3; if ( p ) { sprintf( p, "x%02x", *s ); p += 3; } break; } } else { if( p ) *p++ = *s; n++; } } else if( (*s & 0xe0) == 0xc0 ) { /* 110x xxxx */ val = *s & 0x1f; nleft = 1; encidx = 0; encbuf[encidx++] = *s; } else if( (*s & 0xf0) == 0xe0 ) { /* 1110 xxxx */ val = *s & 0x0f; nleft = 2; encidx = 0; encbuf[encidx++] = *s; } else if( (*s & 0xf8) == 0xf0 ) { /* 1111 0xxx */ val = *s & 0x07; nleft = 3; encidx = 0; encbuf[encidx++] = *s; } else if( (*s & 0xfc) == 0xf8 ) { /* 1111 10xx */ val = *s & 0x03; nleft = 4; encidx = 0; encbuf[encidx++] = *s; } else if( (*s & 0xfe) == 0xfc ) { /* 1111 110x */ val = *s & 0x01; nleft = 5; encidx = 0; encbuf[encidx++] = *s; } else { /* invalid encoding: print as \xnn */ if( p ) { sprintf(p, "\\x%02x", *s ); p += 4; } n += 4; resync = 1; } } else if( *s < 0x80 || *s >= 0xc0 ) { /* invalid */ if( p ) { for(i=0; i < encidx; i++ ) { sprintf(p, "\\x%02x", encbuf[i] ); p += 4; } sprintf(p, "\\x%02x", *s ); p += 4; } n += 4 + 4*encidx; nleft = 0; encidx = 0; resync = 1; } else { encbuf[encidx++] = *s; val <<= 6; val |= *s & 0x3f; if( !--nleft ) { /* ready */ if (no_translation) { if( p ) { for(i=0; i < encidx; i++ ) *p++ = encbuf[i]; } n += encidx; encidx = 0; } #ifdef USE_GNUPG_ICONV else if(use_iconv) { /* Our strategy for using iconv is a bit * strange but it better keeps compatibility * with previous versions in regard to how * invalid encodings are displayed. What we * do is to keep the utf-8 as is and have the * real translation step then at the end. * Yes, I know that this is ugly. However we * are short of the 1.4 release and for this * branch we should not mee too much around * with iconv things. One reason for this is * that we don't know enough about non-GNU * iconv implementation and want to minimize * the risk of breaking the code on too many * platforms. */ if( p ) { for(i=0; i < encidx; i++ ) *p++ = encbuf[i]; } n += encidx; encidx = 0; } #endif /*USE_GNUPG_ICONV*/ else if( active_charset ) { /* table lookup */ for(i=0; i < 128; i++ ) { if( active_charset[i] == val ) break; } if( i < 128 ) { /* we can print this one */ if( p ) *p++ = i+128; n++; } else { /* we do not have a translation: print utf8 */ if( p ) { for(i=0; i < encidx; i++ ) { sprintf(p, "\\x%02x", encbuf[i] ); p += 4; } } n += encidx*4; encidx = 0; } } else { /* native set */ if( val >= 0x80 && val < 256 ) { n++; /* we can simply print this character */ if( p ) *p++ = val; } else { /* we do not have a translation: print utf8 */ if( p ) { for(i=0; i < encidx; i++ ) { sprintf(p, "\\x%02x", encbuf[i] ); p += 4; } } n += encidx*4; encidx = 0; } } } } } if( !buffer ) { /* allocate the buffer after the first pass */ buffer = p = m_alloc( n + 1 ); } #ifdef USE_GNUPG_ICONV else if(use_iconv) { /* Note: See above for comments. */ iconv_t cd; const char *inptr; char *outbuf, *outptr; size_t inbytes, outbytes; *p = 0; /* Terminate the buffer. */ cd = iconv_open (active_charset_name, "utf-8"); if (cd == (iconv_t)-1) { handle_iconv_error (active_charset_name, "utf-8", 1); m_free (buffer); return utf8_to_native (string, length, delim); } /* Allocate a new buffer large enough to hold all possible * encodings. */ n = p - buffer + 1; inbytes = n - 1;; inptr = buffer; outbytes = n * MB_LEN_MAX; if (outbytes / MB_LEN_MAX != n) BUG (); /* Actually an overflow. */ outbuf = outptr = m_alloc (outbytes); if ( iconv (cd, (ICONV_CONST char **)&inptr, &inbytes, &outptr, &outbytes) == (size_t)-1) { log_info (_("conversion from `%s' to `%s' failed: %s\n"), "utf-8", active_charset_name, strerror (errno)); /* Didn't worked out. Temporary disable the use of * iconv and fall back to our old code. */ m_free (buffer); buffer = NULL; m_free (outbuf); use_iconv = 0; outbuf = utf8_to_native (string, length, delim); use_iconv = 1; } else { /* Success. */ *outptr = 0; /* We could realloc the buffer now but I doubt that it makes much sense given that it will get freed anyway soon after. */ m_free (buffer); } iconv_close (cd); return outbuf; } #endif /*USE_GNUPG_ICONV*/ else { *p = 0; /* make a string */ return buffer; } } } /**************************************************** ******** locale insensitive ctype functions ******** ****************************************************/ /* FIXME: replace them by a table lookup and macros */ int ascii_isupper (int c) { return c >= 'A' && c <= 'Z'; } int ascii_islower (int c) { return c >= 'a' && c <= 'z'; } int ascii_toupper (int c) { if (c >= 'a' && c <= 'z') c &= ~0x20; return c; } int ascii_tolower (int c) { if (c >= 'A' && c <= 'Z') c |= 0x20; return c; } int ascii_strcasecmp (const char *a, const char *b) { const unsigned char *p1 = (const unsigned char *)a; const unsigned char *p2 = (const unsigned char *)b; unsigned char c1, c2; if (p1 == p2) return 0; do { c1 = ascii_tolower (*p1); c2 = ascii_tolower (*p2); if (c1 == '\0') break; ++p1; ++p2; } while (c1 == c2); return c1 - c2; } int ascii_strncasecmp (const char *a, const char *b, size_t n) { const unsigned char *p1 = (const unsigned char *)a; const unsigned char *p2 = (const unsigned char *)b; unsigned char c1, c2; if (p1 == p2 || !n ) return 0; do { c1 = ascii_tolower (*p1); c2 = ascii_tolower (*p2); if ( !--n || c1 == '\0') break; ++p1; ++p2; } while (c1 == c2); return c1 - c2; } int ascii_memcasecmp( const char *a, const char *b, size_t n ) { if (a == b) return 0; for ( ; n; n--, a++, b++ ) { if( *a != *b && ascii_toupper (*a) != ascii_toupper (*b) ) return *a == *b? 0 : (ascii_toupper (*a) - ascii_toupper (*b)); } return 0; } /********************************************* ********** missing string functions ********* *********************************************/ #ifndef HAVE_STPCPY char * stpcpy(char *a,const char *b) { while( *b ) *a++ = *b++; *a = 0; return (char*)a; } #endif #ifndef HAVE_STRSEP /* code taken from glibc-2.2.1/sysdeps/generic/strsep.c */ char * strsep (char **stringp, const char *delim) { char *begin, *end; begin = *stringp; if (begin == NULL) return NULL; /* A frequent case is when the delimiter string contains only one character. Here we don't need to call the expensive `strpbrk' function and instead work using `strchr'. */ if (delim[0] == '\0' || delim[1] == '\0') { char ch = delim[0]; if (ch == '\0') end = NULL; else { if (*begin == ch) end = begin; else if (*begin == '\0') end = NULL; else end = strchr (begin + 1, ch); } } else /* Find the end of the token. */ end = strpbrk (begin, delim); if (end) { /* Terminate the token and set *STRINGP past NUL character. */ *end++ = '\0'; *stringp = end; } else /* No more delimiters; this is the last token. */ *stringp = NULL; return begin; } #endif /*HAVE_STRSEP*/ #ifndef HAVE_STRLWR char * strlwr(char *s) { char *p; for(p=s; *p; p++ ) *p = tolower(*(unsigned char *)p); return s; } #endif #ifndef HAVE_STRCASECMP int strcasecmp( const char *a, const char *b ) { for( ; *a && *b; a++, b++ ) { if( *a != *b && toupper(*(const byte *)a) != toupper(*(const byte *)b) ) break; } return *(const byte*)a - *(const byte*)b; } #endif #ifndef HAVE_STRNCASECMP int strncasecmp( const char *a, const char *b, size_t n ) { for( ; n && *a && *b; a++, b++, n--) { if( *a != *b && toupper(*(const byte *)a) != toupper(*(const byte *)b) ) break; } if (!n) return 0; return *(const byte*)a - *(const byte*)b; } #endif #ifdef _WIN32 /* * Like vsprintf but provides a pointer to malloc'd storage, which * must be freed by the caller (m_free). Taken from libiberty as * found in gcc-2.95.2 and a little bit modernized. * FIXME: Write a new CRT for W32. */ int vasprintf (char **result, const char *format, va_list args) { const char *p = format; /* Add one to make sure that it is never zero, which might cause malloc to return NULL. */ int total_width = strlen (format) + 1; va_list ap; /* this is not really portable but works under Windows */ memcpy ( &ap, &args, sizeof (va_list)); while (*p != '\0') { if (*p++ == '%') { while (strchr ("-+ #0", *p)) ++p; if (*p == '*') { ++p; total_width += abs (va_arg (ap, int)); } else { char *endp; total_width += strtoul (p, &endp, 10); p = endp; } if (*p == '.') { ++p; if (*p == '*') { ++p; total_width += abs (va_arg (ap, int)); } else { char *endp; total_width += strtoul (p, &endp, 10); p = endp; } } while (strchr ("hlL", *p)) ++p; /* Should be big enough for any format specifier except %s and floats. */ total_width += 30; switch (*p) { case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': case 'c': (void) va_arg (ap, int); break; case 'f': case 'e': case 'E': case 'g': case 'G': (void) va_arg (ap, double); /* Since an ieee double can have an exponent of 307, we'll make the buffer wide enough to cover the gross case. */ total_width += 307; case 's': total_width += strlen (va_arg (ap, char *)); break; case 'p': case 'n': (void) va_arg (ap, char *); break; } } } *result = m_alloc (total_width); if (*result != NULL) return vsprintf (*result, format, args); else return 0; } int asprintf (char **buf, const char *fmt, ...) { int status; va_list ap; va_start (ap, fmt); status = vasprintf (buf, fmt, ap); va_end (ap); return status; } const char * w32_strerror (int w32_errno) { static char strerr[256]; int ec = (int)GetLastError (); if (w32_errno == 0) w32_errno = ec; FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, w32_errno, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT), strerr, DIM (strerr)-1, NULL); return strerr; } #endif /*_WIN32*/