| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "apr.h" |
| #include "apr_private.h" |
| |
| #include "apr_lib.h" |
| #include "apr_strings.h" |
| #include "apr_network_io.h" |
| #include "apr_portable.h" |
| #include <math.h> |
| #if APR_HAVE_CTYPE_H |
| #include <ctype.h> |
| #endif |
| #if APR_HAVE_NETINET_IN_H |
| #include <netinet/in.h> |
| #endif |
| #if APR_HAVE_SYS_SOCKET_H |
| #include <sys/socket.h> |
| #endif |
| #if APR_HAVE_ARPA_INET_H |
| #include <arpa/inet.h> |
| #endif |
| #if APR_HAVE_LIMITS_H |
| #include <limits.h> |
| #endif |
| #if APR_HAVE_STRING_H |
| #include <string.h> |
| #endif |
| |
| typedef enum { |
| NO = 0, YES = 1 |
| } boolean_e; |
| |
| #ifndef FALSE |
| #define FALSE 0 |
| #endif |
| #ifndef TRUE |
| #define TRUE 1 |
| #endif |
| |
| /* For APR 1.2.x only (solved globally in 1.3.0) to be portable |
| * to non-2's compliment architectures, fall through to the 64 |
| * bit code path for the signed or unsigned value 0x...80000000 |
| */ |
| #ifndef INT32_MIN |
| #define INT32_MIN -(0x7fffffff) |
| #endif |
| #ifndef INT32_MAX |
| #define INT32_MAX 0x7fffffff |
| #endif |
| |
| #define NUL '\0' |
| |
| #define S_NULL "(null)" |
| #define S_NULL_LEN 6 |
| |
| #define FLOAT_DIGITS 6 |
| #define EXPONENT_LENGTH 10 |
| |
| /* |
| * NUM_BUF_SIZE is the size of the buffer used for arithmetic conversions |
| * |
| * NOTICE: this is a magic number; do not decrease it |
| */ |
| #define NUM_BUF_SIZE 512 |
| |
| /* |
| * cvt.c - IEEE floating point formatting routines for FreeBSD |
| * from GNU libc-4.6.27. Modified to be thread safe. |
| */ |
| |
| /* |
| * apr_ecvt converts to decimal |
| * the number of digits is specified by ndigit |
| * decpt is set to the position of the decimal point |
| * sign is set to 0 for positive, 1 for negative |
| */ |
| |
| #define NDIG 80 |
| |
| /* buf must have at least NDIG bytes */ |
| static char *apr_cvt(double arg, int ndigits, int *decpt, int *sign, |
| int eflag, char *buf) |
| { |
| register int r2; |
| double fi, fj; |
| register char *p, *p1; |
| |
| if (ndigits >= NDIG - 1) |
| ndigits = NDIG - 2; |
| r2 = 0; |
| *sign = 0; |
| p = &buf[0]; |
| if (arg < 0) { |
| *sign = 1; |
| arg = -arg; |
| } |
| arg = modf(arg, &fi); |
| p1 = &buf[NDIG]; |
| /* |
| * Do integer part |
| */ |
| if (fi != 0) { |
| p1 = &buf[NDIG]; |
| while (p1 > &buf[0] && fi != 0) { |
| fj = modf(fi / 10, &fi); |
| *--p1 = (int) ((fj + .03) * 10) + '0'; |
| r2++; |
| } |
| while (p1 < &buf[NDIG]) |
| *p++ = *p1++; |
| } |
| else if (arg > 0) { |
| while ((fj = arg * 10) < 1) { |
| arg = fj; |
| r2--; |
| } |
| } |
| p1 = &buf[ndigits]; |
| if (eflag == 0) |
| p1 += r2; |
| if (p1 < &buf[0]) { |
| *decpt = -ndigits; |
| buf[0] = '\0'; |
| return (buf); |
| } |
| *decpt = r2; |
| while (p <= p1 && p < &buf[NDIG]) { |
| arg *= 10; |
| arg = modf(arg, &fj); |
| *p++ = (int) fj + '0'; |
| } |
| if (p1 >= &buf[NDIG]) { |
| buf[NDIG - 1] = '\0'; |
| return (buf); |
| } |
| p = p1; |
| *p1 += 5; |
| while (*p1 > '9') { |
| *p1 = '0'; |
| if (p1 > buf) |
| ++ * --p1; |
| else { |
| *p1 = '1'; |
| (*decpt)++; |
| if (eflag == 0) { |
| if (p > buf) |
| *p = '0'; |
| p++; |
| } |
| } |
| } |
| *p = '\0'; |
| return (buf); |
| } |
| |
| static char *apr_ecvt(double arg, int ndigits, int *decpt, int *sign, char *buf) |
| { |
| return (apr_cvt(arg, ndigits, decpt, sign, 1, buf)); |
| } |
| |
| static char *apr_fcvt(double arg, int ndigits, int *decpt, int *sign, char *buf) |
| { |
| return (apr_cvt(arg, ndigits, decpt, sign, 0, buf)); |
| } |
| |
| /* |
| * apr_gcvt - Floating output conversion to |
| * minimal length string |
| */ |
| |
| static char *apr_gcvt(double number, int ndigit, char *buf, boolean_e altform) |
| { |
| int sign, decpt; |
| register char *p1, *p2; |
| register int i; |
| char buf1[NDIG]; |
| |
| p1 = apr_ecvt(number, ndigit, &decpt, &sign, buf1); |
| p2 = buf; |
| if (sign) |
| *p2++ = '-'; |
| for (i = ndigit - 1; i > 0 && p1[i] == '0'; i--) |
| ndigit--; |
| if ((decpt >= 0 && decpt - ndigit > 4) |
| || (decpt < 0 && decpt < -3)) { /* use E-style */ |
| decpt--; |
| *p2++ = *p1++; |
| *p2++ = '.'; |
| for (i = 1; i < ndigit; i++) |
| *p2++ = *p1++; |
| *p2++ = 'e'; |
| if (decpt < 0) { |
| decpt = -decpt; |
| *p2++ = '-'; |
| } |
| else |
| *p2++ = '+'; |
| if (decpt / 100 > 0) |
| *p2++ = decpt / 100 + '0'; |
| if (decpt / 10 > 0) |
| *p2++ = (decpt % 100) / 10 + '0'; |
| *p2++ = decpt % 10 + '0'; |
| } |
| else { |
| if (decpt <= 0) { |
| if (*p1 != '0') |
| *p2++ = '.'; |
| while (decpt < 0) { |
| decpt++; |
| *p2++ = '0'; |
| } |
| } |
| for (i = 1; i <= ndigit; i++) { |
| *p2++ = *p1++; |
| if (i == decpt) |
| *p2++ = '.'; |
| } |
| if (ndigit < decpt) { |
| while (ndigit++ < decpt) |
| *p2++ = '0'; |
| *p2++ = '.'; |
| } |
| } |
| if (p2[-1] == '.' && !altform) |
| p2--; |
| *p2 = '\0'; |
| return (buf); |
| } |
| |
| /* |
| * The INS_CHAR macro inserts a character in the buffer and writes |
| * the buffer back to disk if necessary |
| * It uses the char pointers sp and bep: |
| * sp points to the next available character in the buffer |
| * bep points to the end-of-buffer+1 |
| * While using this macro, note that the nextb pointer is NOT updated. |
| * |
| * NOTE: Evaluation of the c argument should not have any side-effects |
| */ |
| #define INS_CHAR(c, sp, bep, cc) \ |
| { \ |
| if (sp) { \ |
| if (sp >= bep) { \ |
| vbuff->curpos = sp; \ |
| if (flush_func(vbuff)) \ |
| return -1; \ |
| sp = vbuff->curpos; \ |
| bep = vbuff->endpos; \ |
| } \ |
| *sp++ = (c); \ |
| } \ |
| cc++; \ |
| } |
| |
| #define NUM(c) (c - '0') |
| |
| #define STR_TO_DEC(str, num) \ |
| num = NUM(*str++); \ |
| while (apr_isdigit(*str)) \ |
| { \ |
| num *= 10 ; \ |
| num += NUM(*str++); \ |
| } |
| |
| /* |
| * This macro does zero padding so that the precision |
| * requirement is satisfied. The padding is done by |
| * adding '0's to the left of the string that is going |
| * to be printed. We don't allow precision to be large |
| * enough that we continue past the start of s. |
| * |
| * NOTE: this makes use of the magic info that s is |
| * always based on num_buf with a size of NUM_BUF_SIZE. |
| */ |
| #define FIX_PRECISION(adjust, precision, s, s_len) \ |
| if (adjust) { \ |
| apr_size_t p = (precision + 1 < NUM_BUF_SIZE) \ |
| ? precision : NUM_BUF_SIZE - 1; \ |
| while (s_len < p) \ |
| { \ |
| *--s = '0'; \ |
| s_len++; \ |
| } \ |
| } |
| |
| /* |
| * Macro that does padding. The padding is done by printing |
| * the character ch. |
| */ |
| #define PAD(width, len, ch) \ |
| do \ |
| { \ |
| INS_CHAR(ch, sp, bep, cc); \ |
| width--; \ |
| } \ |
| while (width > len) |
| |
| /* |
| * Prefix the character ch to the string str |
| * Increase length |
| * Set the has_prefix flag |
| */ |
| #define PREFIX(str, length, ch) \ |
| *--str = ch; \ |
| length++; \ |
| has_prefix=YES; |
| |
| |
| /* |
| * Convert num to its decimal format. |
| * Return value: |
| * - a pointer to a string containing the number (no sign) |
| * - len contains the length of the string |
| * - is_negative is set to TRUE or FALSE depending on the sign |
| * of the number (always set to FALSE if is_unsigned is TRUE) |
| * |
| * The caller provides a buffer for the string: that is the buf_end argument |
| * which is a pointer to the END of the buffer + 1 (i.e. if the buffer |
| * is declared as buf[ 100 ], buf_end should be &buf[ 100 ]) |
| * |
| * Note: we have 2 versions. One is used when we need to use quads |
| * (conv_10_quad), the other when we don't (conv_10). We're assuming the |
| * latter is faster. |
| */ |
| static char *conv_10(register apr_int32_t num, register int is_unsigned, |
| register int *is_negative, char *buf_end, |
| register apr_size_t *len) |
| { |
| register char *p = buf_end; |
| register apr_uint32_t magnitude = num; |
| |
| if (is_unsigned) { |
| *is_negative = FALSE; |
| } |
| else { |
| *is_negative = (num < 0); |
| |
| /* |
| * On a 2's complement machine, negating the most negative integer |
| * results in a number that cannot be represented as a signed integer. |
| * Here is what we do to obtain the number's magnitude: |
| * a. add 1 to the number |
| * b. negate it (becomes positive) |
| * c. convert it to unsigned |
| * d. add 1 |
| */ |
| if (*is_negative) { |
| apr_int32_t t = num + 1; |
| magnitude = ((apr_uint32_t) -t) + 1; |
| } |
| } |
| |
| /* |
| * We use a do-while loop so that we write at least 1 digit |
| */ |
| do { |
| register apr_uint32_t new_magnitude = magnitude / 10; |
| |
| *--p = (char) (magnitude - new_magnitude * 10 + '0'); |
| magnitude = new_magnitude; |
| } |
| while (magnitude); |
| |
| *len = buf_end - p; |
| return (p); |
| } |
| |
| static char *conv_10_quad(apr_int64_t num, register int is_unsigned, |
| register int *is_negative, char *buf_end, |
| register apr_size_t *len) |
| { |
| register char *p = buf_end; |
| apr_uint64_t magnitude = num; |
| |
| /* |
| * We see if we can use the faster non-quad version by checking the |
| * number against the largest long value it can be. If <=, we |
| * punt to the quicker version. |
| */ |
| if ((magnitude <= APR_UINT32_MAX && is_unsigned) |
| || (num <= INT32_MAX && num >= INT32_MIN && !is_unsigned)) |
| return(conv_10((apr_int32_t)num, is_unsigned, is_negative, buf_end, len)); |
| |
| if (is_unsigned) { |
| *is_negative = FALSE; |
| } |
| else { |
| *is_negative = (num < 0); |
| |
| /* |
| * On a 2's complement machine, negating the most negative integer |
| * results in a number that cannot be represented as a signed integer. |
| * Here is what we do to obtain the number's magnitude: |
| * a. add 1 to the number |
| * b. negate it (becomes positive) |
| * c. convert it to unsigned |
| * d. add 1 |
| */ |
| if (*is_negative) { |
| apr_int64_t t = num + 1; |
| magnitude = ((apr_uint64_t) -t) + 1; |
| } |
| } |
| |
| /* |
| * We use a do-while loop so that we write at least 1 digit |
| */ |
| do { |
| apr_uint64_t new_magnitude = magnitude / 10; |
| |
| *--p = (char) (magnitude - new_magnitude * 10 + '0'); |
| magnitude = new_magnitude; |
| } |
| while (magnitude); |
| |
| *len = buf_end - p; |
| return (p); |
| } |
| |
| static char *conv_in_addr(struct in_addr *ia, char *buf_end, apr_size_t *len) |
| { |
| unsigned addr = ntohl(ia->s_addr); |
| char *p = buf_end; |
| int is_negative; |
| apr_size_t sub_len; |
| |
| p = conv_10((addr & 0x000000FF) , TRUE, &is_negative, p, &sub_len); |
| *--p = '.'; |
| p = conv_10((addr & 0x0000FF00) >> 8, TRUE, &is_negative, p, &sub_len); |
| *--p = '.'; |
| p = conv_10((addr & 0x00FF0000) >> 16, TRUE, &is_negative, p, &sub_len); |
| *--p = '.'; |
| p = conv_10((addr & 0xFF000000) >> 24, TRUE, &is_negative, p, &sub_len); |
| |
| *len = buf_end - p; |
| return (p); |
| } |
| |
| |
| /* Must be passed a buffer of size NUM_BUF_SIZE where buf_end points |
| * to 1 byte past the end of the buffer. */ |
| static char *conv_apr_sockaddr(apr_sockaddr_t *sa, char *buf_end, apr_size_t *len) |
| { |
| char *p = buf_end; |
| int is_negative; |
| apr_size_t sub_len; |
| char *ipaddr_str; |
| |
| p = conv_10(sa->port, TRUE, &is_negative, p, &sub_len); |
| *--p = ':'; |
| apr_sockaddr_ip_get(&ipaddr_str, sa); |
| sub_len = strlen(ipaddr_str); |
| #if APR_HAVE_IPV6 |
| if (sa->family == APR_INET6 && |
| !IN6_IS_ADDR_V4MAPPED(&sa->sa.sin6.sin6_addr)) { |
| *(p - 1) = ']'; |
| p -= sub_len + 2; |
| *p = '['; |
| memcpy(p + 1, ipaddr_str, sub_len); |
| } |
| else |
| #endif |
| { |
| p -= sub_len; |
| memcpy(p, ipaddr_str, sub_len); |
| } |
| |
| *len = buf_end - p; |
| return (p); |
| } |
| |
| |
| |
| #if APR_HAS_THREADS |
| static char *conv_os_thread_t(apr_os_thread_t *tid, char *buf_end, apr_size_t *len) |
| { |
| union { |
| apr_os_thread_t tid; |
| apr_uint64_t u64; |
| apr_uint32_t u32; |
| } u; |
| int is_negative; |
| |
| u.tid = *tid; |
| switch(sizeof(u.tid)) { |
| case sizeof(apr_int32_t): |
| return conv_10(u.u32, TRUE, &is_negative, buf_end, len); |
| case sizeof(apr_int64_t): |
| return conv_10_quad(u.u64, TRUE, &is_negative, buf_end, len); |
| default: |
| /* not implemented; stick 0 in the buffer */ |
| return conv_10(0, TRUE, &is_negative, buf_end, len); |
| } |
| } |
| #endif |
| |
| |
| |
| /* |
| * Convert a floating point number to a string formats 'f', 'e' or 'E'. |
| * The result is placed in buf, and len denotes the length of the string |
| * The sign is returned in the is_negative argument (and is not placed |
| * in buf). |
| */ |
| static char *conv_fp(register char format, register double num, |
| boolean_e add_dp, int precision, int *is_negative, |
| char *buf, apr_size_t *len) |
| { |
| register char *s = buf; |
| register char *p; |
| int decimal_point; |
| char buf1[NDIG]; |
| |
| if (format == 'f') |
| p = apr_fcvt(num, precision, &decimal_point, is_negative, buf1); |
| else /* either e or E format */ |
| p = apr_ecvt(num, precision + 1, &decimal_point, is_negative, buf1); |
| |
| /* |
| * Check for Infinity and NaN |
| */ |
| if (apr_isalpha(*p)) { |
| *len = strlen(p); |
| memcpy(buf, p, *len + 1); |
| *is_negative = FALSE; |
| return (buf); |
| } |
| |
| if (format == 'f') { |
| if (decimal_point <= 0) { |
| *s++ = '0'; |
| if (precision > 0) { |
| *s++ = '.'; |
| while (decimal_point++ < 0) |
| *s++ = '0'; |
| } |
| else if (add_dp) |
| *s++ = '.'; |
| } |
| else { |
| while (decimal_point-- > 0) |
| *s++ = *p++; |
| if (precision > 0 || add_dp) |
| *s++ = '.'; |
| } |
| } |
| else { |
| *s++ = *p++; |
| if (precision > 0 || add_dp) |
| *s++ = '.'; |
| } |
| |
| /* |
| * copy the rest of p, the NUL is NOT copied |
| */ |
| while (*p) |
| *s++ = *p++; |
| |
| if (format != 'f') { |
| char temp[EXPONENT_LENGTH]; /* for exponent conversion */ |
| apr_size_t t_len; |
| int exponent_is_negative; |
| |
| *s++ = format; /* either e or E */ |
| decimal_point--; |
| if (decimal_point != 0) { |
| p = conv_10((apr_int32_t) decimal_point, FALSE, &exponent_is_negative, |
| &temp[EXPONENT_LENGTH], &t_len); |
| *s++ = exponent_is_negative ? '-' : '+'; |
| |
| /* |
| * Make sure the exponent has at least 2 digits |
| */ |
| if (t_len == 1) |
| *s++ = '0'; |
| while (t_len--) |
| *s++ = *p++; |
| } |
| else { |
| *s++ = '+'; |
| *s++ = '0'; |
| *s++ = '0'; |
| } |
| } |
| |
| *len = s - buf; |
| return (buf); |
| } |
| |
| |
| /* |
| * Convert num to a base X number where X is a power of 2. nbits determines X. |
| * For example, if nbits is 3, we do base 8 conversion |
| * Return value: |
| * a pointer to a string containing the number |
| * |
| * The caller provides a buffer for the string: that is the buf_end argument |
| * which is a pointer to the END of the buffer + 1 (i.e. if the buffer |
| * is declared as buf[ 100 ], buf_end should be &buf[ 100 ]) |
| * |
| * As with conv_10, we have a faster version which is used when |
| * the number isn't quad size. |
| */ |
| static char *conv_p2(register apr_uint32_t num, register int nbits, |
| char format, char *buf_end, register apr_size_t *len) |
| { |
| register int mask = (1 << nbits) - 1; |
| register char *p = buf_end; |
| static const char low_digits[] = "0123456789abcdef"; |
| static const char upper_digits[] = "0123456789ABCDEF"; |
| register const char *digits = (format == 'X') ? upper_digits : low_digits; |
| |
| do { |
| *--p = digits[num & mask]; |
| num >>= nbits; |
| } |
| while (num); |
| |
| *len = buf_end - p; |
| return (p); |
| } |
| |
| static char *conv_p2_quad(apr_uint64_t num, register int nbits, |
| char format, char *buf_end, register apr_size_t *len) |
| { |
| register int mask = (1 << nbits) - 1; |
| register char *p = buf_end; |
| static const char low_digits[] = "0123456789abcdef"; |
| static const char upper_digits[] = "0123456789ABCDEF"; |
| register const char *digits = (format == 'X') ? upper_digits : low_digits; |
| |
| if (num <= APR_UINT32_MAX) |
| return(conv_p2((apr_uint32_t)num, nbits, format, buf_end, len)); |
| |
| do { |
| *--p = digits[num & mask]; |
| num >>= nbits; |
| } |
| while (num); |
| |
| *len = buf_end - p; |
| return (p); |
| } |
| |
| #if APR_HAS_THREADS |
| static char *conv_os_thread_t_hex(apr_os_thread_t *tid, char *buf_end, apr_size_t *len) |
| { |
| union { |
| apr_os_thread_t tid; |
| apr_uint64_t u64; |
| apr_uint32_t u32; |
| } u; |
| int is_negative; |
| |
| u.tid = *tid; |
| switch(sizeof(u.tid)) { |
| case sizeof(apr_int32_t): |
| return conv_p2(u.u32, 4, 'x', buf_end, len); |
| case sizeof(apr_int64_t): |
| return conv_p2_quad(u.u64, 4, 'x', buf_end, len); |
| default: |
| /* not implemented; stick 0 in the buffer */ |
| return conv_10(0, TRUE, &is_negative, buf_end, len); |
| } |
| } |
| #endif |
| |
| /* |
| * Do format conversion placing the output in buffer |
| */ |
| APR_DECLARE(int) apr_vformatter(int (*flush_func)(apr_vformatter_buff_t *), |
| apr_vformatter_buff_t *vbuff, const char *fmt, va_list ap) |
| { |
| register char *sp; |
| register char *bep; |
| register int cc = 0; |
| register apr_size_t i; |
| |
| register char *s = NULL; |
| char *q; |
| apr_size_t s_len; |
| |
| register apr_size_t min_width = 0; |
| apr_size_t precision = 0; |
| enum { |
| LEFT, RIGHT |
| } adjust; |
| char pad_char; |
| char prefix_char; |
| |
| double fp_num; |
| apr_int64_t i_quad = 0; |
| apr_uint64_t ui_quad; |
| apr_int32_t i_num = 0; |
| apr_uint32_t ui_num; |
| |
| char num_buf[NUM_BUF_SIZE]; |
| char char_buf[2]; /* for printing %% and %<unknown> */ |
| |
| enum var_type_enum { |
| IS_QUAD, IS_LONG, IS_SHORT, IS_INT |
| }; |
| enum var_type_enum var_type = IS_INT; |
| |
| /* |
| * Flag variables |
| */ |
| boolean_e alternate_form; |
| boolean_e print_sign; |
| boolean_e print_blank; |
| boolean_e adjust_precision; |
| boolean_e adjust_width; |
| int is_negative; |
| |
| sp = vbuff->curpos; |
| bep = vbuff->endpos; |
| |
| while (*fmt) { |
| if (*fmt != '%') { |
| INS_CHAR(*fmt, sp, bep, cc); |
| } |
| else { |
| /* |
| * Default variable settings |
| */ |
| boolean_e print_something = YES; |
| adjust = RIGHT; |
| alternate_form = print_sign = print_blank = NO; |
| pad_char = ' '; |
| prefix_char = NUL; |
| |
| fmt++; |
| |
| /* |
| * Try to avoid checking for flags, width or precision |
| */ |
| if (!apr_islower(*fmt)) { |
| /* |
| * Recognize flags: -, #, BLANK, + |
| */ |
| for (;; fmt++) { |
| if (*fmt == '-') |
| adjust = LEFT; |
| else if (*fmt == '+') |
| print_sign = YES; |
| else if (*fmt == '#') |
| alternate_form = YES; |
| else if (*fmt == ' ') |
| print_blank = YES; |
| else if (*fmt == '0') |
| pad_char = '0'; |
| else |
| break; |
| } |
| |
| /* |
| * Check if a width was specified |
| */ |
| if (apr_isdigit(*fmt)) { |
| STR_TO_DEC(fmt, min_width); |
| adjust_width = YES; |
| } |
| else if (*fmt == '*') { |
| int v = va_arg(ap, int); |
| fmt++; |
| adjust_width = YES; |
| if (v < 0) { |
| adjust = LEFT; |
| min_width = (apr_size_t)(-v); |
| } |
| else |
| min_width = (apr_size_t)v; |
| } |
| else |
| adjust_width = NO; |
| |
| /* |
| * Check if a precision was specified |
| */ |
| if (*fmt == '.') { |
| adjust_precision = YES; |
| fmt++; |
| if (apr_isdigit(*fmt)) { |
| STR_TO_DEC(fmt, precision); |
| } |
| else if (*fmt == '*') { |
| int v = va_arg(ap, int); |
| fmt++; |
| precision = (v < 0) ? 0 : (apr_size_t)v; |
| } |
| else |
| precision = 0; |
| } |
| else |
| adjust_precision = NO; |
| } |
| else |
| adjust_precision = adjust_width = NO; |
| |
| /* |
| * Modifier check. Note that if APR_INT64_T_FMT is "d", |
| * the first if condition is never true. |
| */ |
| if ((sizeof(APR_INT64_T_FMT) == 4 && |
| fmt[0] == APR_INT64_T_FMT[0] && |
| fmt[1] == APR_INT64_T_FMT[1]) || |
| (sizeof(APR_INT64_T_FMT) == 3 && |
| fmt[0] == APR_INT64_T_FMT[0]) || |
| (sizeof(APR_INT64_T_FMT) > 4 && |
| strncmp(fmt, APR_INT64_T_FMT, |
| sizeof(APR_INT64_T_FMT) - 2) == 0)) { |
| /* Need to account for trailing 'd' and null in sizeof() */ |
| var_type = IS_QUAD; |
| fmt += (sizeof(APR_INT64_T_FMT) - 2); |
| } |
| else if (*fmt == 'q') { |
| var_type = IS_QUAD; |
| fmt++; |
| } |
| else if (*fmt == 'l') { |
| var_type = IS_LONG; |
| fmt++; |
| } |
| else if (*fmt == 'h') { |
| var_type = IS_SHORT; |
| fmt++; |
| } |
| else { |
| var_type = IS_INT; |
| } |
| |
| /* |
| * Argument extraction and printing. |
| * First we determine the argument type. |
| * Then, we convert the argument to a string. |
| * On exit from the switch, s points to the string that |
| * must be printed, s_len has the length of the string |
| * The precision requirements, if any, are reflected in s_len. |
| * |
| * NOTE: pad_char may be set to '0' because of the 0 flag. |
| * It is reset to ' ' by non-numeric formats |
| */ |
| switch (*fmt) { |
| case 'u': |
| if (var_type == IS_QUAD) { |
| i_quad = va_arg(ap, apr_uint64_t); |
| s = conv_10_quad(i_quad, 1, &is_negative, |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| else { |
| if (var_type == IS_LONG) |
| i_num = (apr_int32_t) va_arg(ap, apr_uint32_t); |
| else if (var_type == IS_SHORT) |
| i_num = (apr_int32_t) (unsigned short) va_arg(ap, unsigned int); |
| else |
| i_num = (apr_int32_t) va_arg(ap, unsigned int); |
| s = conv_10(i_num, 1, &is_negative, |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| FIX_PRECISION(adjust_precision, precision, s, s_len); |
| break; |
| |
| case 'd': |
| case 'i': |
| if (var_type == IS_QUAD) { |
| i_quad = va_arg(ap, apr_int64_t); |
| s = conv_10_quad(i_quad, 0, &is_negative, |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| else { |
| if (var_type == IS_LONG) |
| i_num = va_arg(ap, apr_int32_t); |
| else if (var_type == IS_SHORT) |
| i_num = (short) va_arg(ap, int); |
| else |
| i_num = va_arg(ap, int); |
| s = conv_10(i_num, 0, &is_negative, |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| FIX_PRECISION(adjust_precision, precision, s, s_len); |
| |
| if (is_negative) |
| prefix_char = '-'; |
| else if (print_sign) |
| prefix_char = '+'; |
| else if (print_blank) |
| prefix_char = ' '; |
| break; |
| |
| |
| case 'o': |
| if (var_type == IS_QUAD) { |
| ui_quad = va_arg(ap, apr_uint64_t); |
| s = conv_p2_quad(ui_quad, 3, *fmt, |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| else { |
| if (var_type == IS_LONG) |
| ui_num = va_arg(ap, apr_uint32_t); |
| else if (var_type == IS_SHORT) |
| ui_num = (unsigned short) va_arg(ap, unsigned int); |
| else |
| ui_num = va_arg(ap, unsigned int); |
| s = conv_p2(ui_num, 3, *fmt, |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| FIX_PRECISION(adjust_precision, precision, s, s_len); |
| if (alternate_form && *s != '0') { |
| *--s = '0'; |
| s_len++; |
| } |
| break; |
| |
| |
| case 'x': |
| case 'X': |
| if (var_type == IS_QUAD) { |
| ui_quad = va_arg(ap, apr_uint64_t); |
| s = conv_p2_quad(ui_quad, 4, *fmt, |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| else { |
| if (var_type == IS_LONG) |
| ui_num = va_arg(ap, apr_uint32_t); |
| else if (var_type == IS_SHORT) |
| ui_num = (unsigned short) va_arg(ap, unsigned int); |
| else |
| ui_num = va_arg(ap, unsigned int); |
| s = conv_p2(ui_num, 4, *fmt, |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| FIX_PRECISION(adjust_precision, precision, s, s_len); |
| if (alternate_form && i_num != 0) { |
| *--s = *fmt; /* 'x' or 'X' */ |
| *--s = '0'; |
| s_len += 2; |
| } |
| break; |
| |
| |
| case 's': |
| s = va_arg(ap, char *); |
| if (s != NULL) { |
| if (!adjust_precision) { |
| s_len = strlen(s); |
| } |
| else { |
| /* From the C library standard in section 7.9.6.1: |
| * ...if the precision is specified, no more then |
| * that many characters are written. If the |
| * precision is not specified or is greater |
| * than the size of the array, the array shall |
| * contain a null character. |
| * |
| * My reading is is precision is specified and |
| * is less then or equal to the size of the |
| * array, no null character is required. So |
| * we can't do a strlen. |
| * |
| * This figures out the length of the string |
| * up to the precision. Once it's long enough |
| * for the specified precision, we don't care |
| * anymore. |
| * |
| * NOTE: you must do the length comparison |
| * before the check for the null character. |
| * Otherwise, you'll check one beyond the |
| * last valid character. |
| */ |
| const char *walk; |
| |
| for (walk = s, s_len = 0; |
| (s_len < precision) && (*walk != '\0'); |
| ++walk, ++s_len); |
| } |
| } |
| else { |
| s = S_NULL; |
| s_len = S_NULL_LEN; |
| } |
| pad_char = ' '; |
| break; |
| |
| |
| case 'f': |
| case 'e': |
| case 'E': |
| fp_num = va_arg(ap, double); |
| /* |
| * We use &num_buf[ 1 ], so that we have room for the sign |
| */ |
| s = NULL; |
| #ifdef HAVE_ISNAN |
| if (isnan(fp_num)) { |
| s = "nan"; |
| s_len = 3; |
| } |
| #endif |
| #ifdef HAVE_ISINF |
| if (!s && isinf(fp_num)) { |
| s = "inf"; |
| s_len = 3; |
| } |
| #endif |
| if (!s) { |
| s = conv_fp(*fmt, fp_num, alternate_form, |
| (int)((adjust_precision == NO) ? FLOAT_DIGITS : precision), |
| &is_negative, &num_buf[1], &s_len); |
| if (is_negative) |
| prefix_char = '-'; |
| else if (print_sign) |
| prefix_char = '+'; |
| else if (print_blank) |
| prefix_char = ' '; |
| } |
| break; |
| |
| |
| case 'g': |
| case 'G': |
| if (adjust_precision == NO) |
| precision = FLOAT_DIGITS; |
| else if (precision == 0) |
| precision = 1; |
| /* |
| * * We use &num_buf[ 1 ], so that we have room for the sign |
| */ |
| s = apr_gcvt(va_arg(ap, double), (int) precision, &num_buf[1], |
| alternate_form); |
| if (*s == '-') |
| prefix_char = *s++; |
| else if (print_sign) |
| prefix_char = '+'; |
| else if (print_blank) |
| prefix_char = ' '; |
| |
| s_len = strlen(s); |
| |
| if (alternate_form && (q = strchr(s, '.')) == NULL) { |
| s[s_len++] = '.'; |
| s[s_len] = '\0'; /* delimit for following strchr() */ |
| } |
| if (*fmt == 'G' && (q = strchr(s, 'e')) != NULL) |
| *q = 'E'; |
| break; |
| |
| |
| case 'c': |
| char_buf[0] = (char) (va_arg(ap, int)); |
| s = &char_buf[0]; |
| s_len = 1; |
| pad_char = ' '; |
| break; |
| |
| |
| case '%': |
| char_buf[0] = '%'; |
| s = &char_buf[0]; |
| s_len = 1; |
| pad_char = ' '; |
| break; |
| |
| |
| case 'n': |
| if (var_type == IS_QUAD) |
| *(va_arg(ap, apr_int64_t *)) = cc; |
| else if (var_type == IS_LONG) |
| *(va_arg(ap, long *)) = cc; |
| else if (var_type == IS_SHORT) |
| *(va_arg(ap, short *)) = cc; |
| else |
| *(va_arg(ap, int *)) = cc; |
| print_something = NO; |
| break; |
| |
| /* |
| * This is where we extend the printf format, with a second |
| * type specifier |
| */ |
| case 'p': |
| switch(*++fmt) { |
| /* |
| * If the pointer size is equal to or smaller than the size |
| * of the largest unsigned int, we convert the pointer to a |
| * hex number, otherwise we print "%p" to indicate that we |
| * don't handle "%p". |
| */ |
| case 'p': |
| #if APR_SIZEOF_VOIDP == 8 |
| if (sizeof(void *) <= sizeof(apr_uint64_t)) { |
| ui_quad = (apr_uint64_t) va_arg(ap, void *); |
| s = conv_p2_quad(ui_quad, 4, 'x', |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| #else |
| if (sizeof(void *) <= sizeof(apr_uint32_t)) { |
| ui_num = (apr_uint32_t) va_arg(ap, void *); |
| s = conv_p2(ui_num, 4, 'x', |
| &num_buf[NUM_BUF_SIZE], &s_len); |
| } |
| #endif |
| else { |
| s = "%p"; |
| s_len = 2; |
| prefix_char = NUL; |
| } |
| pad_char = ' '; |
| break; |
| |
| /* print an apr_sockaddr_t as a.b.c.d:port */ |
| case 'I': |
| { |
| apr_sockaddr_t *sa; |
| |
| sa = va_arg(ap, apr_sockaddr_t *); |
| if (sa != NULL) { |
| s = conv_apr_sockaddr(sa, &num_buf[NUM_BUF_SIZE], &s_len); |
| if (adjust_precision && precision < s_len) |
| s_len = precision; |
| } |
| else { |
| s = S_NULL; |
| s_len = S_NULL_LEN; |
| } |
| pad_char = ' '; |
| } |
| break; |
| |
| /* print a struct in_addr as a.b.c.d */ |
| case 'A': |
| { |
| struct in_addr *ia; |
| |
| ia = va_arg(ap, struct in_addr *); |
| if (ia != NULL) { |
| s = conv_in_addr(ia, &num_buf[NUM_BUF_SIZE], &s_len); |
| if (adjust_precision && precision < s_len) |
| s_len = precision; |
| } |
| else { |
| s = S_NULL; |
| s_len = S_NULL_LEN; |
| } |
| pad_char = ' '; |
| } |
| break; |
| |
| case 'T': |
| #if APR_HAS_THREADS |
| { |
| apr_os_thread_t *tid; |
| |
| tid = va_arg(ap, apr_os_thread_t *); |
| if (tid != NULL) { |
| s = conv_os_thread_t(tid, &num_buf[NUM_BUF_SIZE], &s_len); |
| if (adjust_precision && precision < s_len) |
| s_len = precision; |
| } |
| else { |
| s = S_NULL; |
| s_len = S_NULL_LEN; |
| } |
| pad_char = ' '; |
| } |
| #else |
| char_buf[0] = '0'; |
| s = &char_buf[0]; |
| s_len = 1; |
| pad_char = ' '; |
| #endif |
| break; |
| |
| case 't': |
| #if APR_HAS_THREADS |
| { |
| apr_os_thread_t *tid; |
| |
| tid = va_arg(ap, apr_os_thread_t *); |
| if (tid != NULL) { |
| s = conv_os_thread_t_hex(tid, &num_buf[NUM_BUF_SIZE], &s_len); |
| if (adjust_precision && precision < s_len) |
| s_len = precision; |
| } |
| else { |
| s = S_NULL; |
| s_len = S_NULL_LEN; |
| } |
| pad_char = ' '; |
| } |
| #else |
| char_buf[0] = '0'; |
| s = &char_buf[0]; |
| s_len = 1; |
| pad_char = ' '; |
| #endif |
| break; |
| |
| case NUL: |
| /* if %p ends the string, oh well ignore it */ |
| continue; |
| |
| default: |
| s = "bogus %p"; |
| s_len = 8; |
| prefix_char = NUL; |
| (void)va_arg(ap, void *); /* skip the bogus argument on the stack */ |
| break; |
| } |
| break; |
| |
| case NUL: |
| /* |
| * The last character of the format string was %. |
| * We ignore it. |
| */ |
| continue; |
| |
| |
| /* |
| * The default case is for unrecognized %'s. |
| * We print %<char> to help the user identify what |
| * option is not understood. |
| * This is also useful in case the user wants to pass |
| * the output of format_converter to another function |
| * that understands some other %<char> (like syslog). |
| * Note that we can't point s inside fmt because the |
| * unknown <char> could be preceded by width etc. |
| */ |
| default: |
| char_buf[0] = '%'; |
| char_buf[1] = *fmt; |
| s = char_buf; |
| s_len = 2; |
| pad_char = ' '; |
| break; |
| } |
| |
| if (prefix_char != NUL && s != S_NULL && s != char_buf) { |
| *--s = prefix_char; |
| s_len++; |
| } |
| |
| if (adjust_width && adjust == RIGHT && min_width > s_len) { |
| if (pad_char == '0' && prefix_char != NUL) { |
| INS_CHAR(*s, sp, bep, cc); |
| s++; |
| s_len--; |
| min_width--; |
| } |
| PAD(min_width, s_len, pad_char); |
| } |
| |
| /* |
| * Print the string s. |
| */ |
| if (print_something == YES) { |
| for (i = s_len; i != 0; i--) { |
| INS_CHAR(*s, sp, bep, cc); |
| s++; |
| } |
| } |
| |
| if (adjust_width && adjust == LEFT && min_width > s_len) |
| PAD(min_width, s_len, pad_char); |
| } |
| fmt++; |
| } |
| vbuff->curpos = sp; |
| |
| return cc; |
| } |
| |
| |
| static int snprintf_flush(apr_vformatter_buff_t *vbuff) |
| { |
| /* if the buffer fills we have to abort immediately, there is no way |
| * to "flush" an apr_snprintf... there's nowhere to flush it to. |
| */ |
| return -1; |
| } |
| |
| |
| APR_DECLARE_NONSTD(int) apr_snprintf(char *buf, apr_size_t len, |
| const char *format, ...) |
| { |
| int cc; |
| va_list ap; |
| apr_vformatter_buff_t vbuff; |
| |
| if (len == 0) { |
| /* NOTE: This is a special case; we just want to return the number |
| * of chars that would be written (minus \0) if the buffer |
| * size was infinite. We leverage the fact that INS_CHAR |
| * just does actual inserts iff the buffer pointer is non-NULL. |
| * In this case, we don't care what buf is; it can be NULL, since |
| * we don't touch it at all. |
| */ |
| vbuff.curpos = NULL; |
| vbuff.endpos = NULL; |
| } else { |
| /* save one byte for nul terminator */ |
| vbuff.curpos = buf; |
| vbuff.endpos = buf + len - 1; |
| } |
| va_start(ap, format); |
| cc = apr_vformatter(snprintf_flush, &vbuff, format, ap); |
| va_end(ap); |
| if (len != 0) { |
| *vbuff.curpos = '\0'; |
| } |
| return (cc == -1) ? (int)len - 1 : cc; |
| } |
| |
| |
| APR_DECLARE(int) apr_vsnprintf(char *buf, apr_size_t len, const char *format, |
| va_list ap) |
| { |
| int cc; |
| apr_vformatter_buff_t vbuff; |
| |
| if (len == 0) { |
| /* See above note */ |
| vbuff.curpos = NULL; |
| vbuff.endpos = NULL; |
| } else { |
| /* save one byte for nul terminator */ |
| vbuff.curpos = buf; |
| vbuff.endpos = buf + len - 1; |
| } |
| cc = apr_vformatter(snprintf_flush, &vbuff, format, ap); |
| if (len != 0) { |
| *vbuff.curpos = '\0'; |
| } |
| return (cc == -1) ? (int)len - 1 : cc; |
| } |
