X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fbio%2Fb_print.c;h=7c3c9bdf69f7b08511467c01d0911c8448f027da;hp=b11b501512b7470a6563a7c705cb430f67378a36;hb=06bed643178b836c45d12d091251e24cdf9cbdf4;hpb=3916800fefbe710fee97efce4966637f128e4cf6 diff --git a/crypto/bio/b_print.c b/crypto/bio/b_print.c index b11b501512..7c3c9bdf69 100644 --- a/crypto/bio/b_print.c +++ b/crypto/bio/b_print.c @@ -61,7 +61,6 @@ */ #include -#include #include #include #include @@ -70,6 +69,7 @@ #ifndef NO_SYS_TYPES_H #include #endif +#include /* To get BN_LLONG properly defined */ #include #ifdef BN_LLONG @@ -78,48 +78,7 @@ # endif #endif -static void dopr (char *buffer, size_t maxlen, size_t *retlen, - const char *format, va_list args); -#ifdef USE_ALLOCATING_PRINT -static void doapr (char **buffer, size_t *retlen, - const char *format, va_list args); -#endif - -int BIO_printf (BIO *bio, ...) - { - va_list args; - char *format; - int ret; - size_t retlen; -#ifdef USE_ALLOCATING_PRINT - char *hugebuf; -#else - MS_STATIC char hugebuf[1024*2]; /* 10k in one chunk is the limit */ -#endif - - va_start(args, bio); - format=va_arg(args, char *); - -#ifndef USE_ALLOCATING_PRINT - hugebuf[0]='\0'; - dopr(hugebuf, sizeof(hugebuf), &retlen, format, args); -#else - hugebuf = NULL; - CRYPTO_push_info("doapr()"); - doapr(&hugebuf, &retlen, format, args); - if (hugebuf) - { -#endif - ret=BIO_write(bio, hugebuf, (int)retlen); - -#ifdef USE_ALLOCATING_PRINT - Free(hugebuf); - } - CRYPTO_pop_info(); -#endif - va_end(args); - return(ret); - } +/***************************************************************************/ /* * Copyright Patrick Powell 1995 @@ -140,6 +99,7 @@ int BIO_printf (BIO *bio, ...) * o Andrew Tridgell (1998, for Samba) * o Luke Mewburn (1999, for LukemFTP) * o Ralf S. Engelschall (1999, for Pth) + * o ... (for OpenSSL) */ #if HAVE_LONG_DOUBLE @@ -149,30 +109,24 @@ int BIO_printf (BIO *bio, ...) #endif #if HAVE_LONG_LONG -#define LLONG long long +# if defined(OPENSSL_SYS_WIN32) && !defined(__GNUC__) +# define LLONG _int64 +# else +# define LLONG long long +# endif #else #define LLONG long #endif -static void fmtstr (void (*)(char **, size_t *, size_t *, int), - char **, size_t *, size_t *, const char *, int, int, - int); -static void fmtint (void (*)(char **, size_t *, size_t *, int), - char **, size_t *, size_t *, LLONG, int, int, int, int); -static void fmtfp (void (*)(char **, size_t *, size_t *, int), - char **, size_t *, size_t *, LDOUBLE, int, int, int); -#ifndef USE_ALLOCATING_PRINT -static int dopr_isbig (size_t, size_t); -static int dopr_copy (size_t); -static void dopr_outch (char **, size_t *, size_t *, int); -#else -static int doapr_isbig (size_t, size_t); -static int doapr_copy (size_t); -static void doapr_outch (char **, size_t *, size_t *, int); -#endif -static void _dopr(void (*)(char **, size_t *, size_t *, int), - int (*)(size_t, size_t), int (*)(size_t), - char **buffer, size_t *maxlen, size_t *retlen, +static void fmtstr (char **, char **, size_t *, size_t *, + const char *, int, int, int); +static void fmtint (char **, char **, size_t *, size_t *, + LLONG, int, int, int, int); +static void fmtfp (char **, char **, size_t *, size_t *, + LDOUBLE, int, int, int); +static void doapr_outch (char **, char **, size_t *, size_t *, int); +static void _dopr(char **sbuffer, char **buffer, + size_t *maxlen, size_t *retlen, int *truncated, const char *format, va_list args); /* format read states */ @@ -202,43 +156,15 @@ static void _dopr(void (*)(char **, size_t *, size_t *, int), /* some handy macros */ #define char_to_int(p) (p - '0') -#define MAX(p,q) ((p >= q) ? p : q) - -#ifndef USE_ALLOCATING_PRINT -static void -dopr( - char *buffer, - size_t maxlen, - size_t *retlen, - const char *format, - va_list args) -{ - _dopr(dopr_outch, dopr_isbig, dopr_copy, - &buffer, &maxlen, retlen, format, args); -} - -#else -static void -doapr( - char **buffer, - size_t *retlen, - const char *format, - va_list args) -{ - size_t dummy_maxlen = 0; - _dopr(doapr_outch, doapr_isbig, doapr_copy, - buffer, &dummy_maxlen, retlen, format, args); -} -#endif +#define OSSL_MAX(p,q) ((p >= q) ? p : q) static void _dopr( - void (*outch_fn)(char **, size_t *, size_t *, int), - int (*isbig_fn)(size_t, size_t), - int (*copy_fn)(size_t), + char **sbuffer, char **buffer, size_t *maxlen, size_t *retlen, + int *truncated, const char *format, va_list args) { @@ -259,7 +185,7 @@ _dopr( ch = *format++; while (state != DP_S_DONE) { - if ((ch == '\0') || (*isbig_fn)(currlen, *maxlen)) + if (ch == '\0' || (buffer == NULL && currlen >= *maxlen)) state = DP_S_DONE; switch (state) { @@ -267,7 +193,7 @@ _dopr( if (ch == '%') state = DP_S_FLAGS; else - (*outch_fn)(buffer, &currlen, maxlen, ch); + doapr_outch(sbuffer,buffer, &currlen, maxlen, ch); ch = *format++; break; case DP_S_FLAGS: @@ -373,8 +299,8 @@ _dopr( value = va_arg(args, int); break; } - fmtint(outch_fn, buffer, &currlen, maxlen, - value, 10, min, max, flags); + fmtint(sbuffer, buffer, &currlen, maxlen, + value, 10, min, max, flags); break; case 'X': flags |= DP_F_UP; @@ -399,7 +325,7 @@ _dopr( unsigned int); break; } - fmtint(outch_fn, buffer, &currlen, maxlen, value, + fmtint(sbuffer, buffer, &currlen, maxlen, value, ch == 'o' ? 8 : (ch == 'u' ? 10 : 16), min, max, flags); break; @@ -408,8 +334,8 @@ _dopr( fvalue = va_arg(args, LDOUBLE); else fvalue = va_arg(args, double); - fmtfp(outch_fn, buffer, &currlen, maxlen, - fvalue, min, max, flags); + fmtfp(sbuffer, buffer, &currlen, maxlen, + fvalue, min, max, flags); break; case 'E': flags |= DP_F_UP; @@ -428,19 +354,23 @@ _dopr( fvalue = va_arg(args, double); break; case 'c': - (*outch_fn)(buffer, &currlen, maxlen, + doapr_outch(sbuffer, buffer, &currlen, maxlen, va_arg(args, int)); break; case 's': strvalue = va_arg(args, char *); - if (max < 0) - max = (*copy_fn)(*maxlen); - fmtstr(outch_fn, buffer, &currlen, maxlen, strvalue, - flags, min, max); + if (max < 0) { + if (buffer) + max = INT_MAX; + else + max = *maxlen; + } + fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue, + flags, min, max); break; case 'p': value = (long)va_arg(args, void *); - fmtint(outch_fn, buffer, &currlen, maxlen, + fmtint(sbuffer, buffer, &currlen, maxlen, value, 16, min, max, flags); break; case 'n': /* XXX */ @@ -463,7 +393,7 @@ _dopr( } break; case '%': - (*outch_fn)(buffer, &currlen, maxlen, ch); + doapr_outch(sbuffer, buffer, &currlen, maxlen, ch); break; case 'w': /* not supported yet, treat as next char */ @@ -484,16 +414,17 @@ _dopr( break; } } - if (currlen >= *maxlen - 1) + *truncated = (currlen > *maxlen - 1); + if (*truncated) currlen = *maxlen - 1; - (*buffer)[currlen] = '\0'; - *retlen = currlen; + doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0'); + *retlen = currlen - 1; return; } static void fmtstr( - void (*outch_fn)(char **, size_t *, size_t *, int), + char **sbuffer, char **buffer, size_t *currlen, size_t *maxlen, @@ -516,16 +447,16 @@ fmtstr( padlen = -padlen; while ((padlen > 0) && (cnt < max)) { - (*outch_fn)(buffer, currlen, maxlen, ' '); + doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); --padlen; ++cnt; } while (*value && (cnt < max)) { - (*outch_fn)(buffer, currlen, maxlen, *value++); + doapr_outch(sbuffer, buffer, currlen, maxlen, *value++); ++cnt; } while ((padlen < 0) && (cnt < max)) { - (*outch_fn)(buffer, currlen, maxlen, ' '); + doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); ++padlen; ++cnt; } @@ -533,7 +464,7 @@ fmtstr( static void fmtint( - void (*outch_fn)(char **, size_t *, size_t *, int), + char **sbuffer, char **buffer, size_t *currlen, size_t *maxlen, @@ -576,13 +507,13 @@ fmtint( convert[place] = 0; zpadlen = max - place; - spadlen = min - MAX(max, place) - (signvalue ? 1 : 0); + spadlen = min - OSSL_MAX(max, place) - (signvalue ? 1 : 0); if (zpadlen < 0) zpadlen = 0; if (spadlen < 0) spadlen = 0; if (flags & DP_F_ZERO) { - zpadlen = MAX(zpadlen, spadlen); + zpadlen = OSSL_MAX(zpadlen, spadlen); spadlen = 0; } if (flags & DP_F_MINUS) @@ -590,28 +521,28 @@ fmtint( /* spaces */ while (spadlen > 0) { - (*outch_fn)(buffer, currlen, maxlen, ' '); + doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); --spadlen; } /* sign */ if (signvalue) - (*outch_fn)(buffer, currlen, maxlen, signvalue); + doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); /* zeros */ if (zpadlen > 0) { while (zpadlen > 0) { - (*outch_fn)(buffer, currlen, maxlen, '0'); + doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); --zpadlen; } } /* digits */ while (place > 0) - (*outch_fn)(buffer, currlen, maxlen, convert[--place]); + doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]); /* left justified spaces */ while (spadlen < 0) { - (*outch_fn)(buffer, currlen, maxlen, ' '); + doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); ++spadlen; } return; @@ -638,7 +569,7 @@ pow10(int exp) } static long -round(LDOUBLE value) +roundv(LDOUBLE value) { long intpart; intpart = (long) value; @@ -650,7 +581,7 @@ round(LDOUBLE value) static void fmtfp( - void (*outch_fn)(char **, size_t *, size_t *, int), + char **sbuffer, char **buffer, size_t *currlen, size_t *maxlen, @@ -690,7 +621,7 @@ fmtfp( /* we "cheat" by converting the fractional part to integer by multiplying by a factor of 10 */ - fracpart = round((pow10(max)) * (ufvalue - intpart)); + fracpart = roundv((pow10(max)) * (ufvalue - intpart)); if (fracpart >= pow10(max)) { intpart++; @@ -714,7 +645,7 @@ fmtfp( (caps ? "0123456789ABCDEF" : "0123456789abcdef")[fracpart % 10]; fracpart = (fracpart / 10); - } while (fracpart && (fplace < 20)); + } while (fplace < max); if (fplace == 20) fplace--; fconvert[fplace] = 0; @@ -731,114 +662,161 @@ fmtfp( if ((flags & DP_F_ZERO) && (padlen > 0)) { if (signvalue) { - (*outch_fn)(buffer, currlen, maxlen, signvalue); + doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); --padlen; signvalue = 0; } while (padlen > 0) { - (*outch_fn)(buffer, currlen, maxlen, '0'); + doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); --padlen; } } while (padlen > 0) { - (*outch_fn)(buffer, currlen, maxlen, ' '); + doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); --padlen; } if (signvalue) - (*outch_fn)(buffer, currlen, maxlen, signvalue); + doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); while (iplace > 0) - (*outch_fn)(buffer, currlen, maxlen, iconvert[--iplace]); + doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]); /* * Decimal point. This should probably use locale to find the correct * char to print out. */ if (max > 0) { - (*outch_fn)(buffer, currlen, maxlen, '.'); + doapr_outch(sbuffer, buffer, currlen, maxlen, '.'); while (fplace > 0) - (*outch_fn)(buffer, currlen, maxlen, fconvert[--fplace]); + doapr_outch(sbuffer, buffer, currlen, maxlen, fconvert[--fplace]); } while (zpadlen > 0) { - (*outch_fn)(buffer, currlen, maxlen, '0'); + doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); --zpadlen; } while (padlen < 0) { - (*outch_fn)(buffer, currlen, maxlen, ' '); + doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); ++padlen; } } -static int -dopr_copy( - size_t len) -{ - return len; -} - -#ifdef USE_ALLOCATING_PRINT -static int -doapr_copy( - size_t len) -{ - /* Return as high an integer as possible */ - return INT_MAX; -} -#endif - -static int -dopr_isbig( - size_t currlen, - size_t maxlen) -{ - return currlen > maxlen; -} - -#ifdef USE_ALLOCATING_PRINT -static int -doapr_isbig( - size_t currlen, - size_t maxlen) -{ - return 0; -} -#endif - -static void -dopr_outch( - char **buffer, - size_t *currlen, - size_t *maxlen, - int c) -{ - if (*currlen < *maxlen) - (*buffer)[(*currlen)++] = (char)c; - return; -} - -#ifdef USE_ALLOCATING_PRINT static void doapr_outch( + char **sbuffer, char **buffer, size_t *currlen, size_t *maxlen, int c) { - if (*buffer == NULL) { - if (*maxlen == 0) - *maxlen = 1024; - *buffer = Malloc(*maxlen); + /* If we haven't at least one buffer, someone has doe a big booboo */ + assert(*sbuffer != NULL || buffer != NULL); + + if (buffer) { + while (*currlen >= *maxlen) { + if (*buffer == NULL) { + if (*maxlen == 0) + *maxlen = 1024; + *buffer = OPENSSL_malloc(*maxlen); + if (*currlen > 0) { + assert(*sbuffer != NULL); + memcpy(*buffer, *sbuffer, *currlen); + } + *sbuffer = NULL; + } else { + *maxlen += 1024; + *buffer = OPENSSL_realloc(*buffer, *maxlen); + } + } + /* What to do if *buffer is NULL? */ + assert(*sbuffer != NULL || *buffer != NULL); } - while (*currlen >= *maxlen) { - *maxlen += 1024; - *buffer = Realloc(*buffer, *maxlen); + + if (*currlen < *maxlen) { + if (*sbuffer) + (*sbuffer)[(*currlen)++] = (char)c; + else + (*buffer)[(*currlen)++] = (char)c; } - /* What to do if *buffer is NULL? */ - assert(*buffer != NULL); - (*buffer)[(*currlen)++] = (char)c; return; } -#endif + +/***************************************************************************/ + +int BIO_printf (BIO *bio, const char *format, ...) + { + va_list args; + int ret; + + va_start(args, format); + + ret = BIO_vprintf(bio, format, args); + + va_end(args); + return(ret); + } + +int BIO_vprintf (BIO *bio, const char *format, va_list args) + { + int ret; + size_t retlen; + char hugebuf[1024*2]; /* Was previously 10k, which is unreasonable + in small-stack environments, like threads + or DOS programs. */ + char *hugebufp = hugebuf; + size_t hugebufsize = sizeof(hugebuf); + char *dynbuf = NULL; + int ignored; + + dynbuf = NULL; + CRYPTO_push_info("doapr()"); + _dopr(&hugebufp, &dynbuf, &hugebufsize, + &retlen, &ignored, format, args); + if (dynbuf) + { + ret=BIO_write(bio, dynbuf, (int)retlen); + OPENSSL_free(dynbuf); + } + else + { + ret=BIO_write(bio, hugebuf, (int)retlen); + } + CRYPTO_pop_info(); + return(ret); + } + +/* As snprintf is not available everywhere, we provide our own implementation. + * This function has nothing to do with BIOs, but it's closely related + * to BIO_printf, and we need *some* name prefix ... + * (XXX the function should be renamed, but to what?) */ +int BIO_snprintf(char *buf, size_t n, const char *format, ...) + { + va_list args; + int ret; + + va_start(args, format); + + ret = BIO_vsnprintf(buf, n, format, args); + + va_end(args); + return(ret); + } + +int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args) + { + size_t retlen; + int truncated; + + _dopr(&buf, NULL, &n, &retlen, &truncated, format, args); + + if (truncated) + /* In case of truncation, return -1 like traditional snprintf. + * (Current drafts for ISO/IEC 9899 say snprintf should return + * the number of characters that would have been written, + * had the buffer been large enough.) */ + return -1; + else + return (retlen <= INT_MAX) ? retlen : -1; + }