diff options
Diffstat (limited to 'crypto/openssl/crypto/bio/b_print.c')
| -rw-r--r-- | crypto/openssl/crypto/bio/b_print.c | 187 |
1 files changed, 116 insertions, 71 deletions
diff --git a/crypto/openssl/crypto/bio/b_print.c b/crypto/openssl/crypto/bio/b_print.c index 7c81e25..90248fa 100644 --- a/crypto/openssl/crypto/bio/b_print.c +++ b/crypto/openssl/crypto/bio/b_print.c @@ -125,16 +125,16 @@ # define LLONG long #endif -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); +static int fmtstr(char **, char **, size_t *, size_t *, + const char *, int, int, int); +static int fmtint(char **, char **, size_t *, size_t *, + LLONG, int, int, int, int); +static int fmtfp(char **, char **, size_t *, size_t *, + LDOUBLE, int, int, int); +static int doapr_outch(char **, char **, size_t *, size_t *, int); +static int _dopr(char **sbuffer, char **buffer, + size_t *maxlen, size_t *retlen, int *truncated, + const char *format, va_list args); /* format read states */ #define DP_S_DEFAULT 0 @@ -165,7 +165,7 @@ static void _dopr(char **sbuffer, char **buffer, #define char_to_int(p) (p - '0') #define OSSL_MAX(p,q) ((p >= q) ? p : q) -static void +static int _dopr(char **sbuffer, char **buffer, size_t *maxlen, @@ -196,7 +196,8 @@ _dopr(char **sbuffer, if (ch == '%') state = DP_S_FLAGS; else - doapr_outch(sbuffer, buffer, &currlen, maxlen, ch); + if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch)) + return 0; ch = *format++; break; case DP_S_FLAGS: @@ -302,8 +303,9 @@ _dopr(char **sbuffer, value = va_arg(args, int); break; } - fmtint(sbuffer, buffer, &currlen, maxlen, - value, 10, min, max, flags); + if (!fmtint(sbuffer, buffer, &currlen, maxlen, value, 10, min, + max, flags)) + return 0; break; case 'X': flags |= DP_F_UP; @@ -326,17 +328,19 @@ _dopr(char **sbuffer, value = (LLONG) va_arg(args, unsigned int); break; } - fmtint(sbuffer, buffer, &currlen, maxlen, value, - ch == 'o' ? 8 : (ch == 'u' ? 10 : 16), - min, max, flags); + if (!fmtint(sbuffer, buffer, &currlen, maxlen, value, + ch == 'o' ? 8 : (ch == 'u' ? 10 : 16), + min, max, flags)) + return 0; break; case 'f': if (cflags == DP_C_LDOUBLE) fvalue = va_arg(args, LDOUBLE); else fvalue = va_arg(args, double); - fmtfp(sbuffer, buffer, &currlen, maxlen, - fvalue, min, max, flags); + if (!fmtfp(sbuffer, buffer, &currlen, maxlen, fvalue, min, max, + flags)) + return 0; break; case 'E': flags |= DP_F_UP; @@ -355,8 +359,9 @@ _dopr(char **sbuffer, fvalue = va_arg(args, double); break; case 'c': - doapr_outch(sbuffer, buffer, &currlen, maxlen, - va_arg(args, int)); + if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, + va_arg(args, int))) + return 0; break; case 's': strvalue = va_arg(args, char *); @@ -366,13 +371,15 @@ _dopr(char **sbuffer, else max = *maxlen; } - fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue, - flags, min, max); + if (!fmtstr(sbuffer, buffer, &currlen, maxlen, strvalue, + flags, min, max)) + return 0; break; case 'p': value = (long)va_arg(args, void *); - fmtint(sbuffer, buffer, &currlen, maxlen, - value, 16, min, max, flags | DP_F_NUM); + if (!fmtint(sbuffer, buffer, &currlen, maxlen, + value, 16, min, max, flags | DP_F_NUM)) + return 0; break; case 'n': /* XXX */ if (cflags == DP_C_SHORT) { @@ -394,7 +401,8 @@ _dopr(char **sbuffer, } break; case '%': - doapr_outch(sbuffer, buffer, &currlen, maxlen, ch); + if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, ch)) + return 0; break; case 'w': /* not supported yet, treat as next char */ @@ -418,46 +426,56 @@ _dopr(char **sbuffer, *truncated = (currlen > *maxlen - 1); if (*truncated) currlen = *maxlen - 1; - doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0'); + if(!doapr_outch(sbuffer, buffer, &currlen, maxlen, '\0')) + return 0; *retlen = currlen - 1; - return; + return 1; } -static void +static int fmtstr(char **sbuffer, char **buffer, size_t *currlen, size_t *maxlen, const char *value, int flags, int min, int max) { - int padlen, strln; + int padlen; + size_t strln; int cnt = 0; if (value == 0) value = "<NULL>"; - for (strln = 0; value[strln]; ++strln) ; + + strln = strlen(value); + if (strln > INT_MAX) + strln = INT_MAX; + padlen = min - strln; - if (padlen < 0) + if (min < 0 || padlen < 0) padlen = 0; if (flags & DP_F_MINUS) padlen = -padlen; while ((padlen > 0) && (cnt < max)) { - doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); + if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) + return 0; --padlen; ++cnt; } while (*value && (cnt < max)) { - doapr_outch(sbuffer, buffer, currlen, maxlen, *value++); + if(!doapr_outch(sbuffer, buffer, currlen, maxlen, *value++)) + return 0; ++cnt; } while ((padlen < 0) && (cnt < max)) { - doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); + if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) + return 0; ++padlen; ++cnt; } + return 1; } -static void +static int fmtint(char **sbuffer, char **buffer, size_t *currlen, @@ -517,37 +535,44 @@ fmtint(char **sbuffer, /* spaces */ while (spadlen > 0) { - doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); + if(!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) + return 0; --spadlen; } /* sign */ if (signvalue) - doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); + if(!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) + return 0; /* prefix */ while (*prefix) { - doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix); + if(!doapr_outch(sbuffer, buffer, currlen, maxlen, *prefix)) + return 0; prefix++; } /* zeros */ if (zpadlen > 0) { while (zpadlen > 0) { - doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); + if(!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) + return 0; --zpadlen; } } /* digits */ - while (place > 0) - doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place]); + while (place > 0) { + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, convert[--place])) + return 0; + } /* left justified spaces */ while (spadlen < 0) { - doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) + return 0; ++spadlen; } - return; + return 1; } static LDOUBLE abs_val(LDOUBLE value) @@ -578,7 +603,7 @@ static long roundv(LDOUBLE value) return intpart; } -static void +static int fmtfp(char **sbuffer, char **buffer, size_t *currlen, @@ -657,47 +682,61 @@ fmtfp(char **sbuffer, if ((flags & DP_F_ZERO) && (padlen > 0)) { if (signvalue) { - doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) + return 0; --padlen; signvalue = 0; } while (padlen > 0) { - doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) + return 0; --padlen; } } while (padlen > 0) { - doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) + return 0; --padlen; } - if (signvalue) - doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue); + if (signvalue && !doapr_outch(sbuffer, buffer, currlen, maxlen, signvalue)) + return 0; - while (iplace > 0) - doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace]); + while (iplace > 0) { + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, iconvert[--iplace])) + return 0; + } /* * Decimal point. This should probably use locale to find the correct * char to print out. */ if (max > 0 || (flags & DP_F_NUM)) { - doapr_outch(sbuffer, buffer, currlen, maxlen, '.'); + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '.')) + return 0; - while (fplace > 0) - doapr_outch(sbuffer, buffer, currlen, maxlen, fconvert[--fplace]); + while (fplace > 0) { + if(!doapr_outch(sbuffer, buffer, currlen, maxlen, + fconvert[--fplace])) + return 0; + } } while (zpadlen > 0) { - doapr_outch(sbuffer, buffer, currlen, maxlen, '0'); + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, '0')) + return 0; --zpadlen; } while (padlen < 0) { - doapr_outch(sbuffer, buffer, currlen, maxlen, ' '); + if (!doapr_outch(sbuffer, buffer, currlen, maxlen, ' ')) + return 0; ++padlen; } + return 1; } -static void +#define BUFFER_INC 1024 + +static int doapr_outch(char **sbuffer, char **buffer, size_t *currlen, size_t *maxlen, int c) { @@ -708,24 +747,25 @@ doapr_outch(char **sbuffer, assert(*currlen <= *maxlen); if (buffer && *currlen == *maxlen) { - *maxlen += 1024; + if (*maxlen > INT_MAX - BUFFER_INC) + return 0; + + *maxlen += BUFFER_INC; if (*buffer == NULL) { *buffer = OPENSSL_malloc(*maxlen); - if (!*buffer) { - /* Panic! Can't really do anything sensible. Just return */ - return; - } + if (*buffer == NULL) + return 0; if (*currlen > 0) { assert(*sbuffer != NULL); memcpy(*buffer, *sbuffer, *currlen); } *sbuffer = NULL; } else { - *buffer = OPENSSL_realloc(*buffer, *maxlen); - if (!*buffer) { - /* Panic! Can't really do anything sensible. Just return */ - return; - } + char *tmpbuf; + tmpbuf = OPENSSL_realloc(*buffer, *maxlen); + if (tmpbuf == NULL) + return 0; + *buffer = tmpbuf; } } @@ -736,7 +776,7 @@ doapr_outch(char **sbuffer, (*buffer)[(*currlen)++] = (char)c; } - return; + return 1; } /***************************************************************************/ @@ -768,7 +808,11 @@ int BIO_vprintf(BIO *bio, const char *format, va_list args) dynbuf = NULL; CRYPTO_push_info("doapr()"); - _dopr(&hugebufp, &dynbuf, &hugebufsize, &retlen, &ignored, format, args); + if (!_dopr(&hugebufp, &dynbuf, &hugebufsize, &retlen, &ignored, format, + args)) { + OPENSSL_free(dynbuf); + return -1; + } if (dynbuf) { ret = BIO_write(bio, dynbuf, (int)retlen); OPENSSL_free(dynbuf); @@ -803,7 +847,8 @@ 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(!_dopr(&buf, NULL, &n, &retlen, &truncated, format, args)) + return -1; if (truncated) /* |
