/ext/standard/filters.c
C | 1947 lines | 1633 code | 244 blank | 70 comment | 431 complexity | 3c4b5dead847d58ad5af4f4f56540c52 MD5 | raw file
Possible License(s): BSD-2-Clause, BSD-3-Clause, MPL-2.0-no-copyleft-exception, LGPL-2.1
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- /*
- +----------------------------------------------------------------------+
- | Copyright (c) The PHP Group |
- +----------------------------------------------------------------------+
- | This source file is subject to version 3.01 of the PHP license, |
- | that is bundled with this package in the file LICENSE, and is |
- | available through the world-wide-web at the following url: |
- | http://www.php.net/license/3_01.txt |
- | If you did not receive a copy of the PHP license and are unable to |
- | obtain it through the world-wide-web, please send a note to |
- | license@php.net so we can mail you a copy immediately. |
- +----------------------------------------------------------------------+
- | Authors: |
- | Wez Furlong (wez@thebrainroom.com) |
- | Sara Golemon (pollita@php.net) |
- | Moriyoshi Koizumi (moriyoshi@php.net) |
- | Marcus Boerger (helly@php.net) |
- +----------------------------------------------------------------------+
- */
- #include "php.h"
- #include "php_globals.h"
- #include "ext/standard/basic_functions.h"
- #include "ext/standard/file.h"
- #include "ext/standard/php_string.h"
- #include "zend_smart_str.h"
- /* {{{ rot13 stream filter implementation */
- static const char rot13_from[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
- static const char rot13_to[] = "nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM";
- static php_stream_filter_status_t strfilter_rot13_filter(
- php_stream *stream,
- php_stream_filter *thisfilter,
- php_stream_bucket_brigade *buckets_in,
- php_stream_bucket_brigade *buckets_out,
- size_t *bytes_consumed,
- int flags
- )
- {
- php_stream_bucket *bucket;
- size_t consumed = 0;
- while (buckets_in->head) {
- bucket = php_stream_bucket_make_writeable(buckets_in->head);
- php_strtr(bucket->buf, bucket->buflen, rot13_from, rot13_to, 52);
- consumed += bucket->buflen;
- php_stream_bucket_append(buckets_out, bucket);
- }
- if (bytes_consumed) {
- *bytes_consumed = consumed;
- }
- return PSFS_PASS_ON;
- }
- static const php_stream_filter_ops strfilter_rot13_ops = {
- strfilter_rot13_filter,
- NULL,
- "string.rot13"
- };
- static php_stream_filter *strfilter_rot13_create(const char *filtername, zval *filterparams, uint8_t persistent)
- {
- return php_stream_filter_alloc(&strfilter_rot13_ops, NULL, persistent);
- }
- static const php_stream_filter_factory strfilter_rot13_factory = {
- strfilter_rot13_create
- };
- /* }}} */
- /* {{{ string.toupper / string.tolower stream filter implementation */
- static const char lowercase[] = "abcdefghijklmnopqrstuvwxyz";
- static const char uppercase[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
- static php_stream_filter_status_t strfilter_toupper_filter(
- php_stream *stream,
- php_stream_filter *thisfilter,
- php_stream_bucket_brigade *buckets_in,
- php_stream_bucket_brigade *buckets_out,
- size_t *bytes_consumed,
- int flags
- )
- {
- php_stream_bucket *bucket;
- size_t consumed = 0;
- while (buckets_in->head) {
- bucket = php_stream_bucket_make_writeable(buckets_in->head);
- php_strtr(bucket->buf, bucket->buflen, lowercase, uppercase, 26);
- consumed += bucket->buflen;
- php_stream_bucket_append(buckets_out, bucket);
- }
- if (bytes_consumed) {
- *bytes_consumed = consumed;
- }
- return PSFS_PASS_ON;
- }
- static php_stream_filter_status_t strfilter_tolower_filter(
- php_stream *stream,
- php_stream_filter *thisfilter,
- php_stream_bucket_brigade *buckets_in,
- php_stream_bucket_brigade *buckets_out,
- size_t *bytes_consumed,
- int flags
- )
- {
- php_stream_bucket *bucket;
- size_t consumed = 0;
- while (buckets_in->head) {
- bucket = php_stream_bucket_make_writeable(buckets_in->head);
- php_strtr(bucket->buf, bucket->buflen, uppercase, lowercase, 26);
- consumed += bucket->buflen;
- php_stream_bucket_append(buckets_out, bucket);
- }
- if (bytes_consumed) {
- *bytes_consumed = consumed;
- }
- return PSFS_PASS_ON;
- }
- static const php_stream_filter_ops strfilter_toupper_ops = {
- strfilter_toupper_filter,
- NULL,
- "string.toupper"
- };
- static const php_stream_filter_ops strfilter_tolower_ops = {
- strfilter_tolower_filter,
- NULL,
- "string.tolower"
- };
- static php_stream_filter *strfilter_toupper_create(const char *filtername, zval *filterparams, uint8_t persistent)
- {
- return php_stream_filter_alloc(&strfilter_toupper_ops, NULL, persistent);
- }
- static php_stream_filter *strfilter_tolower_create(const char *filtername, zval *filterparams, uint8_t persistent)
- {
- return php_stream_filter_alloc(&strfilter_tolower_ops, NULL, persistent);
- }
- static const php_stream_filter_factory strfilter_toupper_factory = {
- strfilter_toupper_create
- };
- static const php_stream_filter_factory strfilter_tolower_factory = {
- strfilter_tolower_create
- };
- /* }}} */
- /* {{{ base64 / quoted_printable stream filter implementation */
- typedef enum _php_conv_err_t {
- PHP_CONV_ERR_SUCCESS = SUCCESS,
- PHP_CONV_ERR_UNKNOWN,
- PHP_CONV_ERR_TOO_BIG,
- PHP_CONV_ERR_INVALID_SEQ,
- PHP_CONV_ERR_UNEXPECTED_EOS,
- PHP_CONV_ERR_EXISTS,
- PHP_CONV_ERR_MORE,
- PHP_CONV_ERR_ALLOC,
- PHP_CONV_ERR_NOT_FOUND
- } php_conv_err_t;
- typedef struct _php_conv php_conv;
- typedef php_conv_err_t (*php_conv_convert_func)(php_conv *, const char **, size_t *, char **, size_t *);
- typedef void (*php_conv_dtor_func)(php_conv *);
- struct _php_conv {
- php_conv_convert_func convert_op;
- php_conv_dtor_func dtor;
- };
- #define php_conv_convert(a, b, c, d, e) ((php_conv *)(a))->convert_op((php_conv *)(a), (b), (c), (d), (e))
- #define php_conv_dtor(a) ((php_conv *)a)->dtor((a))
- /* {{{ php_conv_base64_encode */
- typedef struct _php_conv_base64_encode {
- php_conv _super;
- const char *lbchars;
- size_t lbchars_len;
- size_t erem_len;
- unsigned int line_ccnt;
- unsigned int line_len;
- int lbchars_dup;
- int persistent;
- unsigned char erem[3];
- } php_conv_base64_encode;
- static php_conv_err_t php_conv_base64_encode_convert(php_conv_base64_encode *inst, const char **in_p, size_t *in_left, char **out_p, size_t *out_left);
- static void php_conv_base64_encode_dtor(php_conv_base64_encode *inst);
- static unsigned char b64_tbl_enc[256] = {
- 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
- 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
- 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
- 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
- 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
- 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
- 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
- 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
- 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
- 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
- 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
- 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
- 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
- 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
- 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
- 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
- };
- static php_conv_err_t php_conv_base64_encode_ctor(php_conv_base64_encode *inst, unsigned int line_len, const char *lbchars, size_t lbchars_len, int lbchars_dup, int persistent)
- {
- inst->_super.convert_op = (php_conv_convert_func) php_conv_base64_encode_convert;
- inst->_super.dtor = (php_conv_dtor_func) php_conv_base64_encode_dtor;
- inst->erem_len = 0;
- inst->line_ccnt = line_len;
- inst->line_len = line_len;
- if (lbchars != NULL) {
- inst->lbchars = (lbchars_dup ? pestrdup(lbchars, persistent) : lbchars);
- inst->lbchars_len = lbchars_len;
- } else {
- inst->lbchars = NULL;
- }
- inst->lbchars_dup = lbchars_dup;
- inst->persistent = persistent;
- return PHP_CONV_ERR_SUCCESS;
- }
- static void php_conv_base64_encode_dtor(php_conv_base64_encode *inst)
- {
- assert(inst != NULL);
- if (inst->lbchars_dup && inst->lbchars != NULL) {
- pefree((void *)inst->lbchars, inst->persistent);
- }
- }
- static php_conv_err_t php_conv_base64_encode_flush(php_conv_base64_encode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
- {
- volatile php_conv_err_t err = PHP_CONV_ERR_SUCCESS;
- register unsigned char *pd;
- register size_t ocnt;
- unsigned int line_ccnt;
- pd = (unsigned char *)(*out_pp);
- ocnt = *out_left_p;
- line_ccnt = inst->line_ccnt;
- switch (inst->erem_len) {
- case 0:
- /* do nothing */
- break;
- case 1:
- if (line_ccnt < 4 && inst->lbchars != NULL) {
- if (ocnt < inst->lbchars_len) {
- return PHP_CONV_ERR_TOO_BIG;
- }
- memcpy(pd, inst->lbchars, inst->lbchars_len);
- pd += inst->lbchars_len;
- ocnt -= inst->lbchars_len;
- line_ccnt = inst->line_len;
- }
- if (ocnt < 4) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- *(pd++) = b64_tbl_enc[(inst->erem[0] >> 2)];
- *(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[0] << 4)];
- *(pd++) = '=';
- *(pd++) = '=';
- inst->erem_len = 0;
- ocnt -= 4;
- line_ccnt -= 4;
- break;
- case 2:
- if (line_ccnt < 4 && inst->lbchars != NULL) {
- if (ocnt < inst->lbchars_len) {
- return PHP_CONV_ERR_TOO_BIG;
- }
- memcpy(pd, inst->lbchars, inst->lbchars_len);
- pd += inst->lbchars_len;
- ocnt -= inst->lbchars_len;
- line_ccnt = inst->line_len;
- }
- if (ocnt < 4) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- *(pd++) = b64_tbl_enc[(inst->erem[0] >> 2)];
- *(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[0] << 4) | (inst->erem[1] >> 4)];
- *(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[1] << 2)];
- *(pd++) = '=';
- inst->erem_len = 0;
- ocnt -=4;
- line_ccnt -= 4;
- break;
- default:
- /* should not happen... */
- err = PHP_CONV_ERR_UNKNOWN;
- break;
- }
- out:
- *out_pp = (char *)pd;
- *out_left_p = ocnt;
- inst->line_ccnt = line_ccnt;
- return err;
- }
- static php_conv_err_t php_conv_base64_encode_convert(php_conv_base64_encode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
- {
- volatile php_conv_err_t err = PHP_CONV_ERR_SUCCESS;
- register size_t ocnt, icnt;
- register unsigned char *ps, *pd;
- register unsigned int line_ccnt;
- if (in_pp == NULL || in_left_p == NULL) {
- return php_conv_base64_encode_flush(inst, in_pp, in_left_p, out_pp, out_left_p);
- }
- pd = (unsigned char *)(*out_pp);
- ocnt = *out_left_p;
- ps = (unsigned char *)(*in_pp);
- icnt = *in_left_p;
- line_ccnt = inst->line_ccnt;
- /* consume the remainder first */
- switch (inst->erem_len) {
- case 1:
- if (icnt >= 2) {
- if (line_ccnt < 4 && inst->lbchars != NULL) {
- if (ocnt < inst->lbchars_len) {
- return PHP_CONV_ERR_TOO_BIG;
- }
- memcpy(pd, inst->lbchars, inst->lbchars_len);
- pd += inst->lbchars_len;
- ocnt -= inst->lbchars_len;
- line_ccnt = inst->line_len;
- }
- if (ocnt < 4) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- *(pd++) = b64_tbl_enc[(inst->erem[0] >> 2)];
- *(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[0] << 4) | (ps[0] >> 4)];
- *(pd++) = b64_tbl_enc[(unsigned char)(ps[0] << 2) | (ps[1] >> 6)];
- *(pd++) = b64_tbl_enc[ps[1]];
- ocnt -= 4;
- ps += 2;
- icnt -= 2;
- inst->erem_len = 0;
- line_ccnt -= 4;
- }
- break;
- case 2:
- if (icnt >= 1) {
- if (inst->line_ccnt < 4 && inst->lbchars != NULL) {
- if (ocnt < inst->lbchars_len) {
- return PHP_CONV_ERR_TOO_BIG;
- }
- memcpy(pd, inst->lbchars, inst->lbchars_len);
- pd += inst->lbchars_len;
- ocnt -= inst->lbchars_len;
- line_ccnt = inst->line_len;
- }
- if (ocnt < 4) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- *(pd++) = b64_tbl_enc[(inst->erem[0] >> 2)];
- *(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[0] << 4) | (inst->erem[1] >> 4)];
- *(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[1] << 2) | (ps[0] >> 6)];
- *(pd++) = b64_tbl_enc[ps[0]];
- ocnt -= 4;
- ps += 1;
- icnt -= 1;
- inst->erem_len = 0;
- line_ccnt -= 4;
- }
- break;
- }
- while (icnt >= 3) {
- if (line_ccnt < 4 && inst->lbchars != NULL) {
- if (ocnt < inst->lbchars_len) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- memcpy(pd, inst->lbchars, inst->lbchars_len);
- pd += inst->lbchars_len;
- ocnt -= inst->lbchars_len;
- line_ccnt = inst->line_len;
- }
- if (ocnt < 4) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- *(pd++) = b64_tbl_enc[ps[0] >> 2];
- *(pd++) = b64_tbl_enc[(unsigned char)(ps[0] << 4) | (ps[1] >> 4)];
- *(pd++) = b64_tbl_enc[(unsigned char)(ps[1] << 2) | (ps[2] >> 6)];
- *(pd++) = b64_tbl_enc[ps[2]];
- ps += 3;
- icnt -=3;
- ocnt -= 4;
- line_ccnt -= 4;
- }
- for (;icnt > 0; icnt--) {
- inst->erem[inst->erem_len++] = *(ps++);
- }
- out:
- *in_pp = (const char *)ps;
- *in_left_p = icnt;
- *out_pp = (char *)pd;
- *out_left_p = ocnt;
- inst->line_ccnt = line_ccnt;
- return err;
- }
- /* }}} */
- /* {{{ php_conv_base64_decode */
- typedef struct _php_conv_base64_decode {
- php_conv _super;
- unsigned int urem;
- unsigned int urem_nbits;
- unsigned int ustat;
- int eos;
- } php_conv_base64_decode;
- static php_conv_err_t php_conv_base64_decode_convert(php_conv_base64_decode *inst, const char **in_p, size_t *in_left, char **out_p, size_t *out_left);
- static void php_conv_base64_decode_dtor(php_conv_base64_decode *inst);
- static unsigned int b64_tbl_dec[256] = {
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
- 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64,128, 64, 64,
- 64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
- 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 64,
- 64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
- 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
- 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
- };
- static int php_conv_base64_decode_ctor(php_conv_base64_decode *inst)
- {
- inst->_super.convert_op = (php_conv_convert_func) php_conv_base64_decode_convert;
- inst->_super.dtor = (php_conv_dtor_func) php_conv_base64_decode_dtor;
- inst->urem = 0;
- inst->urem_nbits = 0;
- inst->ustat = 0;
- inst->eos = 0;
- return SUCCESS;
- }
- static void php_conv_base64_decode_dtor(php_conv_base64_decode *inst)
- {
- /* do nothing */
- }
- #define bmask(a) (0xffff >> (16 - a))
- static php_conv_err_t php_conv_base64_decode_convert(php_conv_base64_decode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
- {
- php_conv_err_t err;
- unsigned int urem, urem_nbits;
- unsigned int pack, pack_bcnt;
- unsigned char *ps, *pd;
- size_t icnt, ocnt;
- unsigned int ustat;
- static const unsigned int nbitsof_pack = 8;
- if (in_pp == NULL || in_left_p == NULL) {
- if (inst->eos || inst->urem_nbits == 0) {
- return PHP_CONV_ERR_SUCCESS;
- }
- return PHP_CONV_ERR_UNEXPECTED_EOS;
- }
- err = PHP_CONV_ERR_SUCCESS;
- ps = (unsigned char *)*in_pp;
- pd = (unsigned char *)*out_pp;
- icnt = *in_left_p;
- ocnt = *out_left_p;
- urem = inst->urem;
- urem_nbits = inst->urem_nbits;
- ustat = inst->ustat;
- pack = 0;
- pack_bcnt = nbitsof_pack;
- for (;;) {
- if (pack_bcnt >= urem_nbits) {
- pack_bcnt -= urem_nbits;
- pack |= (urem << pack_bcnt);
- urem_nbits = 0;
- } else {
- urem_nbits -= pack_bcnt;
- pack |= (urem >> urem_nbits);
- urem &= bmask(urem_nbits);
- pack_bcnt = 0;
- }
- if (pack_bcnt > 0) {
- unsigned int i;
- if (icnt < 1) {
- break;
- }
- i = b64_tbl_dec[(unsigned int)*(ps++)];
- icnt--;
- ustat |= i & 0x80;
- if (!(i & 0xc0)) {
- if (ustat) {
- err = PHP_CONV_ERR_INVALID_SEQ;
- break;
- }
- if (6 <= pack_bcnt) {
- pack_bcnt -= 6;
- pack |= (i << pack_bcnt);
- urem = 0;
- } else {
- urem_nbits = 6 - pack_bcnt;
- pack |= (i >> urem_nbits);
- urem = i & bmask(urem_nbits);
- pack_bcnt = 0;
- }
- } else if (ustat) {
- if (pack_bcnt == 8 || pack_bcnt == 2) {
- err = PHP_CONV_ERR_INVALID_SEQ;
- break;
- }
- inst->eos = 1;
- }
- }
- if ((pack_bcnt | ustat) == 0) {
- if (ocnt < 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- break;
- }
- *(pd++) = pack;
- ocnt--;
- pack = 0;
- pack_bcnt = nbitsof_pack;
- }
- }
- if (urem_nbits >= pack_bcnt) {
- urem |= (pack << (urem_nbits - pack_bcnt));
- urem_nbits += (nbitsof_pack - pack_bcnt);
- } else {
- urem |= (pack >> (pack_bcnt - urem_nbits));
- urem_nbits += (nbitsof_pack - pack_bcnt);
- }
- inst->urem = urem;
- inst->urem_nbits = urem_nbits;
- inst->ustat = ustat;
- *in_pp = (const char *)ps;
- *in_left_p = icnt;
- *out_pp = (char *)pd;
- *out_left_p = ocnt;
- return err;
- }
- #undef bmask
- /* }}} */
- /* {{{ php_conv_qprint_encode */
- typedef struct _php_conv_qprint_encode {
- php_conv _super;
- const char *lbchars;
- size_t lbchars_len;
- int opts;
- unsigned int line_ccnt;
- unsigned int line_len;
- int lbchars_dup;
- int persistent;
- unsigned int lb_ptr;
- unsigned int lb_cnt;
- } php_conv_qprint_encode;
- #define PHP_CONV_QPRINT_OPT_BINARY 0x00000001
- #define PHP_CONV_QPRINT_OPT_FORCE_ENCODE_FIRST 0x00000002
- static void php_conv_qprint_encode_dtor(php_conv_qprint_encode *inst);
- static php_conv_err_t php_conv_qprint_encode_convert(php_conv_qprint_encode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p);
- static void php_conv_qprint_encode_dtor(php_conv_qprint_encode *inst)
- {
- assert(inst != NULL);
- if (inst->lbchars_dup && inst->lbchars != NULL) {
- pefree((void *)inst->lbchars, inst->persistent);
- }
- }
- #define NEXT_CHAR(ps, icnt, lb_ptr, lb_cnt, lbchars) \
- ((lb_ptr) < (lb_cnt) ? (lbchars)[(lb_ptr)] : *(ps))
- #define CONSUME_CHAR(ps, icnt, lb_ptr, lb_cnt) \
- if ((lb_ptr) < (lb_cnt)) { \
- (lb_ptr)++; \
- } else { \
- (lb_cnt) = (lb_ptr) = 0; \
- --(icnt); \
- (ps)++; \
- }
- static php_conv_err_t php_conv_qprint_encode_convert(php_conv_qprint_encode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
- {
- php_conv_err_t err = PHP_CONV_ERR_SUCCESS;
- unsigned char *ps, *pd;
- size_t icnt, ocnt;
- unsigned int c;
- unsigned int line_ccnt;
- unsigned int lb_ptr;
- unsigned int lb_cnt;
- unsigned int trail_ws;
- int opts;
- static char qp_digits[] = "0123456789ABCDEF";
- line_ccnt = inst->line_ccnt;
- opts = inst->opts;
- lb_ptr = inst->lb_ptr;
- lb_cnt = inst->lb_cnt;
- if ((in_pp == NULL || in_left_p == NULL) && (lb_ptr >=lb_cnt)) {
- return PHP_CONV_ERR_SUCCESS;
- }
- ps = (unsigned char *)(*in_pp);
- icnt = *in_left_p;
- pd = (unsigned char *)(*out_pp);
- ocnt = *out_left_p;
- trail_ws = 0;
- for (;;) {
- if (!(opts & PHP_CONV_QPRINT_OPT_BINARY) && inst->lbchars != NULL && inst->lbchars_len > 0) {
- /* look ahead for the line break chars to make a right decision
- * how to consume incoming characters */
- if (icnt > 0 && *ps == inst->lbchars[lb_cnt]) {
- lb_cnt++;
- if (lb_cnt >= inst->lbchars_len) {
- unsigned int i;
- if (ocnt < lb_cnt) {
- lb_cnt--;
- err = PHP_CONV_ERR_TOO_BIG;
- break;
- }
- for (i = 0; i < lb_cnt; i++) {
- *(pd++) = inst->lbchars[i];
- ocnt--;
- }
- line_ccnt = inst->line_len;
- lb_ptr = lb_cnt = 0;
- }
- ps++, icnt--;
- continue;
- }
- }
- if (lb_ptr >= lb_cnt && icnt == 0) {
- break;
- }
- c = NEXT_CHAR(ps, icnt, lb_ptr, lb_cnt, inst->lbchars);
- if (!(opts & PHP_CONV_QPRINT_OPT_BINARY) &&
- (trail_ws == 0) &&
- (c == '\t' || c == ' ')) {
- if (line_ccnt < 2 && inst->lbchars != NULL) {
- if (ocnt < inst->lbchars_len + 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- break;
- }
- *(pd++) = '=';
- ocnt--;
- line_ccnt--;
- memcpy(pd, inst->lbchars, inst->lbchars_len);
- pd += inst->lbchars_len;
- ocnt -= inst->lbchars_len;
- line_ccnt = inst->line_len;
- } else {
- if (ocnt < 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- break;
- }
- /* Check to see if this is EOL whitespace. */
- if (inst->lbchars != NULL) {
- unsigned char *ps2;
- unsigned int lb_cnt2;
- size_t j;
- lb_cnt2 = 0;
- ps2 = ps;
- trail_ws = 1;
- for (j = icnt - 1; j > 0; j--, ps2++) {
- if (*ps2 == inst->lbchars[lb_cnt2]) {
- lb_cnt2++;
- if (lb_cnt2 >= inst->lbchars_len) {
- /* Found trailing ws. Reset to top of main
- * for loop to allow for code to do necessary
- * wrapping/encoding. */
- break;
- }
- } else if (lb_cnt2 != 0 || (*ps2 != '\t' && *ps2 != ' ')) {
- /* At least one non-EOL character following, so
- * don't need to encode ws. */
- trail_ws = 0;
- break;
- } else {
- trail_ws++;
- }
- }
- }
- if (trail_ws == 0) {
- *(pd++) = c;
- ocnt--;
- line_ccnt--;
- CONSUME_CHAR(ps, icnt, lb_ptr, lb_cnt);
- }
- }
- } else if ((!(opts & PHP_CONV_QPRINT_OPT_FORCE_ENCODE_FIRST) || line_ccnt < inst->line_len) && ((c >= 33 && c <= 60) || (c >= 62 && c <= 126))) {
- if (line_ccnt < 2 && inst->lbchars != NULL) {
- if (ocnt < inst->lbchars_len + 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- break;
- }
- *(pd++) = '=';
- ocnt--;
- line_ccnt--;
- memcpy(pd, inst->lbchars, inst->lbchars_len);
- pd += inst->lbchars_len;
- ocnt -= inst->lbchars_len;
- line_ccnt = inst->line_len;
- }
- if (ocnt < 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- break;
- }
- *(pd++) = c;
- ocnt--;
- line_ccnt--;
- CONSUME_CHAR(ps, icnt, lb_ptr, lb_cnt);
- } else {
- if (line_ccnt < 4 && inst->lbchars != NULL) {
- if (ocnt < inst->lbchars_len + 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- break;
- }
- *(pd++) = '=';
- ocnt--;
- line_ccnt--;
- memcpy(pd, inst->lbchars, inst->lbchars_len);
- pd += inst->lbchars_len;
- ocnt -= inst->lbchars_len;
- line_ccnt = inst->line_len;
- }
- if (ocnt < 3) {
- err = PHP_CONV_ERR_TOO_BIG;
- break;
- }
- *(pd++) = '=';
- *(pd++) = qp_digits[(c >> 4)];
- *(pd++) = qp_digits[(c & 0x0f)];
- ocnt -= 3;
- line_ccnt -= 3;
- if (trail_ws > 0) {
- trail_ws--;
- }
- CONSUME_CHAR(ps, icnt, lb_ptr, lb_cnt);
- }
- }
- *in_pp = (const char *)ps;
- *in_left_p = icnt;
- *out_pp = (char *)pd;
- *out_left_p = ocnt;
- inst->line_ccnt = line_ccnt;
- inst->lb_ptr = lb_ptr;
- inst->lb_cnt = lb_cnt;
- return err;
- }
- #undef NEXT_CHAR
- #undef CONSUME_CHAR
- static php_conv_err_t php_conv_qprint_encode_ctor(php_conv_qprint_encode *inst, unsigned int line_len, const char *lbchars, size_t lbchars_len, int lbchars_dup, int opts, int persistent)
- {
- if (line_len < 4 && lbchars != NULL) {
- return PHP_CONV_ERR_TOO_BIG;
- }
- inst->_super.convert_op = (php_conv_convert_func) php_conv_qprint_encode_convert;
- inst->_super.dtor = (php_conv_dtor_func) php_conv_qprint_encode_dtor;
- inst->line_ccnt = line_len;
- inst->line_len = line_len;
- if (lbchars != NULL) {
- inst->lbchars = (lbchars_dup ? pestrdup(lbchars, persistent) : lbchars);
- inst->lbchars_len = lbchars_len;
- } else {
- inst->lbchars = NULL;
- }
- inst->lbchars_dup = lbchars_dup;
- inst->persistent = persistent;
- inst->opts = opts;
- inst->lb_cnt = inst->lb_ptr = 0;
- return PHP_CONV_ERR_SUCCESS;
- }
- /* }}} */
- /* {{{ php_conv_qprint_decode */
- typedef struct _php_conv_qprint_decode {
- php_conv _super;
- const char *lbchars;
- size_t lbchars_len;
- int scan_stat;
- unsigned int next_char;
- int lbchars_dup;
- int persistent;
- unsigned int lb_ptr;
- unsigned int lb_cnt;
- } php_conv_qprint_decode;
- static void php_conv_qprint_decode_dtor(php_conv_qprint_decode *inst)
- {
- assert(inst != NULL);
- if (inst->lbchars_dup && inst->lbchars != NULL) {
- pefree((void *)inst->lbchars, inst->persistent);
- }
- }
- static php_conv_err_t php_conv_qprint_decode_convert(php_conv_qprint_decode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
- {
- php_conv_err_t err = PHP_CONV_ERR_SUCCESS;
- size_t icnt, ocnt;
- unsigned char *ps, *pd;
- unsigned int scan_stat;
- unsigned int next_char;
- unsigned int lb_ptr, lb_cnt;
- lb_ptr = inst->lb_ptr;
- lb_cnt = inst->lb_cnt;
- if ((in_pp == NULL || in_left_p == NULL) && lb_cnt == lb_ptr) {
- if (inst->scan_stat != 0) {
- return PHP_CONV_ERR_UNEXPECTED_EOS;
- }
- return PHP_CONV_ERR_SUCCESS;
- }
- ps = (unsigned char *)(*in_pp);
- icnt = *in_left_p;
- pd = (unsigned char *)(*out_pp);
- ocnt = *out_left_p;
- scan_stat = inst->scan_stat;
- next_char = inst->next_char;
- for (;;) {
- switch (scan_stat) {
- case 0: {
- if (icnt == 0) {
- goto out;
- }
- if (*ps == '=') {
- scan_stat = 1;
- } else {
- if (ocnt < 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- *(pd++) = *ps;
- ocnt--;
- }
- ps++, icnt--;
- } break;
- case 1: {
- if (icnt == 0) {
- goto out;
- }
- if (*ps == ' ' || *ps == '\t') {
- scan_stat = 4;
- ps++, icnt--;
- break;
- } else if (!inst->lbchars && lb_cnt == 0 && *ps == '\r') {
- /* auto-detect line endings, looks like network line ending \r\n (could be mac \r) */
- lb_cnt++;
- scan_stat = 5;
- ps++, icnt--;
- break;
- } else if (!inst->lbchars && lb_cnt == 0 && *ps == '\n') {
- /* auto-detect line endings, looks like unix-lineendings, not to spec, but it is seem in the wild, a lot */
- lb_cnt = lb_ptr = 0;
- scan_stat = 0;
- ps++, icnt--;
- break;
- } else if (lb_cnt < inst->lbchars_len &&
- *ps == (unsigned char)inst->lbchars[lb_cnt]) {
- lb_cnt++;
- scan_stat = 5;
- ps++, icnt--;
- break;
- }
- } /* break is missing intentionally */
- case 2: {
- if (icnt == 0) {
- goto out;
- }
- if (!isxdigit((int) *ps)) {
- err = PHP_CONV_ERR_INVALID_SEQ;
- goto out;
- }
- next_char = (next_char << 4) | (*ps >= 'A' ? *ps - 0x37 : *ps - 0x30);
- scan_stat++;
- ps++, icnt--;
- if (scan_stat != 3) {
- break;
- }
- } /* break is missing intentionally */
- case 3: {
- if (ocnt < 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- *(pd++) = next_char;
- ocnt--;
- scan_stat = 0;
- } break;
- case 4: {
- if (icnt == 0) {
- goto out;
- }
- if (lb_cnt < inst->lbchars_len &&
- *ps == (unsigned char)inst->lbchars[lb_cnt]) {
- lb_cnt++;
- scan_stat = 5;
- }
- if (*ps != '\t' && *ps != ' ') {
- err = PHP_CONV_ERR_INVALID_SEQ;
- goto out;
- }
- ps++, icnt--;
- } break;
- case 5: {
- if (!inst->lbchars && lb_cnt == 1 && *ps == '\n') {
- /* auto-detect soft line breaks, found network line break */
- lb_cnt = lb_ptr = 0;
- scan_stat = 0;
- ps++, icnt--; /* consume \n */
- } else if (!inst->lbchars && lb_cnt > 0) {
- /* auto-detect soft line breaks, found mac line break */
- lb_cnt = lb_ptr = 0;
- scan_stat = 0;
- } else if (lb_cnt >= inst->lbchars_len) {
- /* soft line break */
- lb_cnt = lb_ptr = 0;
- scan_stat = 0;
- } else if (icnt > 0) {
- if (*ps == (unsigned char)inst->lbchars[lb_cnt]) {
- lb_cnt++;
- ps++, icnt--;
- } else {
- scan_stat = 6; /* no break for short-cut */
- }
- } else {
- goto out;
- }
- } break;
- case 6: {
- if (lb_ptr < lb_cnt) {
- if (ocnt < 1) {
- err = PHP_CONV_ERR_TOO_BIG;
- goto out;
- }
- *(pd++) = inst->lbchars[lb_ptr++];
- ocnt--;
- } else {
- scan_stat = 0;
- lb_cnt = lb_ptr = 0;
- }
- } break;
- }
- }
- out:
- *in_pp = (const char *)ps;
- *in_left_p = icnt;
- *out_pp = (char *)pd;
- *out_left_p = ocnt;
- inst->scan_stat = scan_stat;
- inst->lb_ptr = lb_ptr;
- inst->lb_cnt = lb_cnt;
- inst->next_char = next_char;
- return err;
- }
- static php_conv_err_t php_conv_qprint_decode_ctor(php_conv_qprint_decode *inst, const char *lbchars, size_t lbchars_len, int lbchars_dup, int persistent)
- {
- inst->_super.convert_op = (php_conv_convert_func) php_conv_qprint_decode_convert;
- inst->_super.dtor = (php_conv_dtor_func) php_conv_qprint_decode_dtor;
- inst->scan_stat = 0;
- inst->next_char = 0;
- inst->lb_ptr = inst->lb_cnt = 0;
- if (lbchars != NULL) {
- inst->lbchars = (lbchars_dup ? pestrdup(lbchars, persistent) : lbchars);
- inst->lbchars_len = lbchars_len;
- } else {
- inst->lbchars = NULL;
- inst->lbchars_len = 0;
- }
- inst->lbchars_dup = lbchars_dup;
- inst->persistent = persistent;
- return PHP_CONV_ERR_SUCCESS;
- }
- /* }}} */
- typedef struct _php_convert_filter {
- php_conv *cd;
- int persistent;
- char *filtername;
- char stub[128];
- size_t stub_len;
- } php_convert_filter;
- #define PHP_CONV_BASE64_ENCODE 1
- #define PHP_CONV_BASE64_DECODE 2
- #define PHP_CONV_QPRINT_ENCODE 3
- #define PHP_CONV_QPRINT_DECODE 4
- static php_conv_err_t php_conv_get_string_prop_ex(const HashTable *ht, char **pretval, size_t *pretval_len, char *field_name, size_t field_name_len, int persistent)
- {
- zval *tmpval;
- *pretval = NULL;
- *pretval_len = 0;
- if ((tmpval = zend_hash_str_find((HashTable *)ht, field_name, field_name_len-1)) != NULL) {
- zend_string *tmp;
- zend_string *str = zval_get_tmp_string(tmpval, &tmp);
- *pretval = pemalloc(ZSTR_LEN(str) + 1, persistent);
- *pretval_len = ZSTR_LEN(str);
- memcpy(*pretval, ZSTR_VAL(str), ZSTR_LEN(str) + 1);
- zend_tmp_string_release(tmp);
- } else {
- return PHP_CONV_ERR_NOT_FOUND;
- }
- return PHP_CONV_ERR_SUCCESS;
- }
- static php_conv_err_t php_conv_get_ulong_prop_ex(const HashTable *ht, zend_ulong *pretval, char *field_name, size_t field_name_len)
- {
- zval *tmpval = zend_hash_str_find((HashTable *)ht, field_name, field_name_len-1);
- if (tmpval != NULL) {
- zend_long lval = zval_get_long(tmpval);
- if (lval < 0) {
- *pretval = 0;
- } else {
- *pretval = lval;
- }
- return PHP_CONV_ERR_SUCCESS;
- } else {
- *pretval = 0;
- return PHP_CONV_ERR_NOT_FOUND;
- }
- }
- static php_conv_err_t php_conv_get_bool_prop_ex(const HashTable *ht, int *pretval, char *field_name, size_t field_name_len)
- {
- zval *tmpval = zend_hash_str_find((HashTable *)ht, field_name, field_name_len-1);
- if (tmpval != NULL) {
- *pretval = zend_is_true(tmpval);
- return PHP_CONV_ERR_SUCCESS;
- } else {
- *pretval = 0;
- return PHP_CONV_ERR_NOT_FOUND;
- }
- }
- /* XXX this might need an additional fix so it uses size_t, whereby unsigned is quite big so leaving as is for now */
- static int php_conv_get_uint_prop_ex(const HashTable *ht, unsigned int *pretval, char *field_name, size_t field_name_len)
- {
- zend_ulong l;
- php_conv_err_t err;
- *pretval = 0;
- if ((err = php_conv_get_ulong_prop_ex(ht, &l, field_name, field_name_len)) == PHP_CONV_ERR_SUCCESS) {
- *pretval = (unsigned int)l;
- }
- return err;
- }
- #define GET_STR_PROP(ht, var, var_len, fldname, persistent) \
- php_conv_get_string_prop_ex(ht, &var, &var_len, fldname, sizeof(fldname), persistent)
- #define GET_INT_PROP(ht, var, fldname) \
- php_conv_get_int_prop_ex(ht, &var, fldname, sizeof(fldname))
- #define GET_UINT_PROP(ht, var, fldname) \
- php_conv_get_uint_prop_ex(ht, &var, fldname, sizeof(fldname))
- #define GET_BOOL_PROP(ht, var, fldname) \
- php_conv_get_bool_prop_ex(ht, &var, fldname, sizeof(fldname))
- static php_conv *php_conv_open(int conv_mode, const HashTable *options, int persistent)
- {
- /* FIXME: I'll have to replace this ugly code by something neat
- (factories?) in the near future. */
- php_conv *retval = NULL;
- switch (conv_mode) {
- case PHP_CONV_BASE64_ENCODE: {
- unsigned int line_len = 0;
- char *lbchars = NULL;
- size_t lbchars_len;
- if (options != NULL) {
- GET_STR_PROP(options, lbchars, lbchars_len, "line-break-chars", 0);
- GET_UINT_PROP(options, line_len, "line-length");
- if (line_len < 4) {
- if (lbchars != NULL) {
- pefree(lbchars, 0);
- }
- lbchars = NULL;
- } else {
- if (lbchars == NULL) {
- lbchars = pestrdup("\r\n", 0);
- lbchars_len = 2;
- }
- }
- }
- retval = pemalloc(sizeof(php_conv_base64_encode), persistent);
- if (lbchars != NULL) {
- if (php_conv_base64_encode_ctor((php_conv_base64_encode *)retval, line_len, lbchars, lbchars_len, 1, persistent)) {
- if (lbchars != NULL) {
- pefree(lbchars, 0);
- }
- goto out_failure;
- }
- pefree(lbchars, 0);
- } else {
- if (php_conv_base64_encode_ctor((php_conv_base64_encode *)retval, 0, NULL, 0, 0, persistent)) {
- goto out_failure;
- }
- }
- } break;
- case PHP_CONV_BASE64_DECODE:
- retval = pemalloc(sizeof(php_conv_base64_decode), persistent);
- if (php_conv_base64_decode_ctor((php_conv_base64_decode *)retval)) {
- goto out_failure;
- }
- break;
- case PHP_CONV_QPRINT_ENCODE: {
- unsigned int line_len = 0;
- char *lbchars = NULL;
- size_t lbchars_len;
- int opts = 0;
- if (options != NULL) {
- int opt_binary = 0;
- int opt_force_encode_first = 0;
- GET_STR_PROP(options, lbchars, lbchars_len, "line-break-chars", 0);
- GET_UINT_PROP(options, line_len, "line-length");
- GET_BOOL_PROP(options, opt_binary, "binary");
- GET_BOOL_PROP(options, opt_force_encode_first, "force-encode-first");
- if (line_len < 4) {
- if (lbchars != NULL) {
- pefree(lbchars, 0);
- }
- lbchars = NULL;
- } else {
- if (lbchars == NULL) {
- lbchars = pestrdup("\r\n", 0);
- lbchars_len = 2;
- }
- }
- opts |= (opt_binary ? PHP_CONV_QPRINT_OPT_BINARY : 0);
- opts |= (opt_force_encode_first ? PHP_CONV_QPRINT_OPT_FORCE_ENCODE_FIRST : 0);
- }
- retval = pemalloc(sizeof(php_conv_qprint_encode), persistent);
- if (lbchars != NULL) {
- if (php_conv_qprint_encode_ctor((php_conv_qprint_encode *)retval, line_len, lbchars, lbchars_len, 1, opts, persistent)) {
- pefree(lbchars, 0);
- goto out_failure;
- }
- pefree(lbchars, 0);
- } else {
- if (php_conv_qprint_encode_ctor((php_conv_qprint_encode *)retval, 0, NULL, 0, 0, opts, persistent)) {
- goto out_failure;
- }
- }
- } break;
- case PHP_CONV_QPRINT_DECODE: {
- char *lbchars = NULL;
- size_t lbchars_len;
- if (options != NULL) {
- /* If line-break-chars are not specified, filter will attempt to detect line endings (\r, \n, or \r\n) */
- GET_STR_PROP(options, lbchars, lbchars_len, "line-break-chars", 0);
- }
- retval = pemalloc(sizeof(php_conv_qprint_decode), persistent);
- if (lbchars != NULL) {
- if (php_conv_qprint_decode_ctor((php_conv_qprint_decode *)retval, lbchars, lbchars_len, 1, persistent)) {
- pefree(lbchars, 0);
- goto out_failure;
- }
- pefree(lbchars, 0);
- } else {
- if (php_conv_qprint_decode_ctor((php_conv_qprint_decode *)retval, NULL, 0, 0, persistent)) {
- goto out_failure;
- }
- }
- } break;
- default:
- retval = NULL;
- break;
- }
- return retval;
- out_failure:
- if (retval != NULL) {
- pefree(retval, persistent);
- }
- return NULL;
- }
- #undef GET_STR_PROP
- #undef GET_INT_PROP
- #undef GET_UINT_PROP
- #undef GET_BOOL_PROP
- static int php_convert_filter_ctor(php_convert_filter *inst,
- int conv_mode, HashTable *conv_opts,
- const char *filtername, int persistent)
- {
- inst->persistent = persistent;
- inst->filtername = pestrdup(filtername, persistent);
- inst->stub_len = 0;
- if ((inst->cd = php_conv_open(conv_mode, conv_opts, persistent)) == NULL) {
- goto out_failure;
- }
- return SUCCESS;
- out_failure:
- if (inst->cd != NULL) {
- php_conv_dtor(inst->cd);
- pefree(inst->cd, persistent);
- }
- if (inst->filtername != NULL) {
- pefree(inst->filtername, persistent);
- }
- return FAILURE;
- }
- static void php_convert_filter_dtor(php_convert_filter *inst)
- {
- if (inst->cd != NULL) {
- php_conv_dtor(inst->cd);
- pefree(inst->cd, inst->persistent);
- }
- if (inst->filtername != NULL) {
- pefree(inst->filtername, inst->persistent);
- }
- }
- /* {{{ strfilter_convert_append_bucket */
- static int strfilter_convert_append_bucket(
- php_convert_filter *inst,
- php_stream *stream, php_stream_filter *filter,
- php_stream_bucket_brigade *buckets_out,
- const char *ps, size_t buf_len, size_t *consumed,
- int persistent)
- {
- php_conv_err_t err;
- php_stream_bucket *new_bucket;
- char *out_buf = NULL;
- size_t out_buf_size;
- char *pd;
- const char *pt;
- size_t ocnt, icnt, tcnt;
- size_t initial_out_buf_size;
- if (ps == NULL) {
- initial_out_buf_size = 64;
- icnt = 1;
- } else {
- initial_out_buf_size = buf_len;
- icnt = buf_len;
- }
- out_buf_size = ocnt = initial_out_buf_size;
- out_buf = pemalloc(out_buf_size, persistent);
- pd = out_buf;
- if (inst->stub_len > 0) {
- pt = inst->stub;
- tcnt = inst->stub_len;
- while (tcnt > 0) {
- err = php_conv_convert(inst->cd, &pt, &tcnt, &pd, &ocnt);
- switch (err) {
- case PHP_CONV_ERR_INVALID_SEQ:
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): invalid byte sequence", inst->filtername);
- goto out_failure;
- case PHP_CONV_ERR_MORE:
- if (ps != NULL) {
- if (icnt > 0) {
- if (inst->stub_len >= sizeof(inst->stub)) {
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): insufficient buffer", inst->filtername);
- goto out_failure;
- }
- inst->stub[inst->stub_len++] = *(ps++);
- icnt--;
- pt = inst->stub;
- tcnt = inst->stub_len;
- } else {
- tcnt = 0;
- break;
- }
- }
- break;
- case PHP_CONV_ERR_UNEXPECTED_EOS:
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): unexpected end of stream", inst->filtername);
- goto out_failure;
- case PHP_CONV_ERR_TOO_BIG: {
- char *new_out_buf;
- size_t new_out_buf_size;
- new_out_buf_size = out_buf_size << 1;
- if (new_out_buf_size < out_buf_size) {
- /* whoa! no bigger buckets are sold anywhere... */
- if (NULL == (new_bucket = php_stream_bucket_new(stream, out_buf, (out_buf_size - ocnt), 1, persistent))) {
- goto out_failure;
- }
- php_stream_bucket_append(buckets_out, new_bucket);
- out_buf_size = ocnt = initial_out_buf_size;
- out_buf = pemalloc(out_buf_size, persistent);
- pd = out_buf;
- } else {
- new_out_buf = perealloc(out_buf, new_out_buf_size, persistent);
- pd = new_out_buf + (pd - out_buf);
- ocnt += (new_out_buf_size - out_buf_size);
- out_buf = new_out_buf;
- out_buf_size = new_out_buf_size;
- }
- } break;
- case PHP_CONV_ERR_UNKNOWN:
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): unknown error", inst->filtername);
- goto out_failure;
- default:
- break;
- }
- }
- memmove(inst->stub, pt, tcnt);
- inst->stub_len = tcnt;
- }
- while (icnt > 0) {
- err = ((ps == NULL ? php_conv_convert(inst->cd, NULL, NULL, &pd, &ocnt):
- php_conv_convert(inst->cd, &ps, &icnt, &pd, &ocnt)));
- switch (err) {
- case PHP_CONV_ERR_INVALID_SEQ:
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): invalid byte sequence", inst->filtername);
- goto out_failure;
- case PHP_CONV_ERR_MORE:
- if (ps != NULL) {
- if (icnt > sizeof(inst->stub)) {
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): insufficient buffer", inst->filtername);
- goto out_failure;
- }
- memcpy(inst->stub, ps, icnt);
- inst->stub_len = icnt;
- ps += icnt;
- icnt = 0;
- } else {
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): unexpected octet values", inst->filtername);
- goto out_failure;
- }
- break;
- case PHP_CONV_ERR_TOO_BIG: {
- char *new_out_buf;
- size_t new_out_buf_size;
- new_out_buf_size = out_buf_size << 1;
- if (new_out_buf_size < out_buf_size) {
- /* whoa! no bigger buckets are sold anywhere... */
- if (NULL == (new_bucket = php_stream_bucket_new(stream, out_buf, (out_buf_size - ocnt), 1, persistent))) {
- goto out_failure;
- }
- php_stream_bucket_append(buckets_out, new_bucket);
- out_buf_size = ocnt = initial_out_buf_size;
- out_buf = pemalloc(out_buf_size, persistent);
- pd = out_buf;
- } else {
- new_out_buf = perealloc(out_buf, new_out_buf_size, persistent);
- pd = new_out_buf + (pd - out_buf);
- ocnt += (new_out_buf_size - out_buf_size);
- out_buf = new_out_buf;
- out_buf_size = new_out_buf_size;
- }
- } break;
- case PHP_CONV_ERR_UNKNOWN:
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): unknown error", inst->filtername);
- goto out_failure;
- default:
- if (ps == NULL) {
- icnt = 0;
- }
- break;
- }
- }
- if (out_buf_size > ocnt) {
- if (NULL == (new_bucket = php_stream_bucket_new(stream, out_buf, (out_buf_size - ocnt), 1, persistent))) {
- goto out_failure;
- }
- php_stream_bucket_append(buckets_out, new_bucket);
- } else {
- pefree(out_buf, persistent);
- }
- *consumed += buf_len - icnt;
- return SUCCESS;
- out_failure:
- pefree(out_buf, persistent);
- return FAILURE;
- }
- /* }}} */
- static php_stream_filter_status_t strfilter_convert_filter(
- php_stream *stream,
- php_stream_filter *thisfilter,
- php_stream_bucket_brigade *buckets_in,
- php_stream_bucket_brigade *buckets_out,
- size_t *bytes_consumed,
- int flags
- )
- {
- php_stream_bucket *bucket = NULL;
- size_t consumed = 0;
- php_convert_filter *inst = (php_convert_filter *)Z_PTR(thisfilter->abstract);
- while (buckets_in->head != NULL) {
- bucket = buckets_in->head;
- php_stream_bucket_unlink(bucket);
- if (strfilter_convert_append_bucket(inst, stream, thisfilter,
- buckets_out, bucket->buf, bucket->buflen, &consumed,
- php_stream_is_persistent(stream)) != SUCCESS) {
- goto out_failure;
- }
- php_stream_bucket_delref(bucket);
- }
- if (flags != PSFS_FLAG_NORMAL) {
- if (strfilter_convert_append_bucket(inst, stream, thisfilter,
- buckets_out, NULL, 0, &consumed,
- php_stream_is_persistent(stream)) != SUCCESS) {
- goto out_failure;
- }
- }
- if (bytes_consumed) {
- *bytes_consumed = consumed;
- }
- return PSFS_PASS_ON;
- out_failure:
- if (bucket != NULL) {
- php_stream_bucket_delref(bucket);
- }
- return PSFS_ERR_FATAL;
- }
- static void strfilter_convert_dtor(php_stream_filter *thisfilter)
- {
- assert(Z_PTR(thisfilter->abstract) != NULL);
- php_convert_filter_dtor((php_convert_filter *)Z_PTR(thisfilter->abstract));
- pefree(Z_PTR(thisfilter->abstract), ((php_convert_filter *)Z_PTR(thisfilter->abstract))->persistent);
- }
- static const php_stream_filter_ops strfilter_convert_ops = {
- strfilter_convert_filter,
- strfilter_convert_dtor,
- "convert.*"
- };
- static php_stream_filter *strfilter_convert_create(const char *filtername, zval *filterparams, uint8_t persistent)
- {
- php_convert_filter *inst;
- php_stream_filter *retval = NULL;
- char *dot;
- int conv_mode = 0;
- if (filterparams != NULL && Z_TYPE_P(filterparams) != IS_ARRAY) {
- php_error_docref(NULL, E_WARNING, "Stream filter (%s): invalid filter parameter", filtername);
- return NULL;
- }
- if ((dot = strchr(filtername, '.')) == NULL) {
- return NULL;
- }
- ++dot;
- inst = pemalloc(sizeof(php_convert_filter), persistent);
- if (strcasecmp(dot, "base64-encode") == 0) {
- conv_mode = PHP_CONV_BASE64_ENCODE;
- } else if (strcasecmp(dot, "base64-decode") == 0) {
- conv_mode = PHP_CONV_BASE64_DECODE;
- } else if (strcasecmp(dot, "quoted-printable-encode") == 0) {
- conv_mode = PHP_CONV_QPRINT_ENCODE;
- } else if (strcasecmp(dot, "quoted-printable-decode") == 0) {
- conv_mode = PHP_CONV_QPRINT_DECODE;
- }
- if (php_convert_filter_ctor(inst, conv_mode,
- (filterparams != NULL ? Z_ARRVAL_P(filterparams) : NULL),
- filtername, persistent) != SUCCESS) {
- goto out;
- }
- retval = php_stream_filter_alloc(&strfilter_convert_ops, inst, persistent);
- out:
- if (retval == NULL) {
- pefree(inst, persistent);
- }
- return retval;
- }
- static const php_stream_filter_factory strfilter_convert_factory = {
- strfilter_convert_create
- };
- /* }}} */
- /* {{{ consumed filter implementation */
- typedef struct _php_consumed_filter_data {
- size_t consumed;
- zend_off_t offset;
- uint8_t persistent;
- } php_consumed_filter_data;
- static php_stream_filter_status_t consumed_filter_filter(
- php_stream *stream,
- php_stream_filter *thisfilter,
- php_stream_bucket_brigade *buckets_in,
- php_stream_bucket_brigade *buckets_out,
- size_t *bytes_consumed,
- int flags
- )
- {
- php_consumed_filter_data *data = (php_consumed_filter_data *)Z_PTR(thisfilter->abstract);
- php_stream_bucket *bucket;
- size_t consumed = 0;
- if (data->offset == ~0) {
- data->offset = php_stream_tell(stream);
- }
- while ((bucket = buckets_in->head) != NULL) {
- php_stream_bucket_unlink(bucket);
- consumed += bucket->buflen;
- php_stream_bucket_append(buckets_out, bucket);
- }
- if (bytes_consumed) {
- *bytes_consumed = consumed;
- }
- if (flags & PSFS_FLAG_FLUSH_CLOSE) {
- php_stream_seek(stream, data->offset + data->consumed, SEEK_SET);
- }
- data->consumed += consumed;
- return PSFS_PASS_ON;
- }
- static void consumed_filter_dtor(php_stream_filter *thisfilter)
- {
- if (thisfilter && Z_PTR(thisfilter->abstract)) {
- php_consumed_filter_data *data = (php_consumed_filter_data*)Z_PTR(thisfilter->abstract);
- pefree(data, data->persistent);
- }
- }
- static const php_stream_filter_ops consumed_filter_ops = {
- consumed_filter_filter,
- consumed_filter_dtor,
- "consumed"
- };
- static php_stream_filter *consumed_filter_create(const char *filtername, zval *filterparams, uint8_t persistent)
- {
- const php_stream_filter_ops *fops = NULL;
- php_consumed_filter_data *data;
- if (strcasecmp(filtername, "consumed")) {
- return NULL;
- }
- /* Create this filter */
- data = pecalloc(1, sizeof(php_consumed_filter_data), persistent);
- data->persistent = persistent;
- data->consumed = 0;
- data->offset = ~0;
- fops = &consumed_filter_ops;
- return php_stream_filter_alloc(fops, data, persistent);
- }
- static const php_stream_filter_factory consumed_filter_factory = {
- consumed_filter_create
- };
- /* }}} */
- /* {{{ chunked filter implementation */
- typedef enum _php_chunked_filter_state {
- CHUNK_SIZE_START,
- CHUNK_SIZE,
- CHUNK_SIZE_EXT,
- CHUNK_SIZE_CR,
- CHUNK_SIZE_LF,
- CHUNK_BODY,
- CHUNK_BODY_CR,
- CHUNK_BODY_LF,
- CHUNK_TRAILER,
- CHUNK_ERROR
- } php_chunked_filter_state;
- typedef struct _php_chunked_filter_data {
- size_t chunk_size;
- php_chunked_filter_state state;
- int persistent;
- } php_chunked_filter_data;
- static size_t php_dechunk(char *buf, size_t len, php_chunked_filter_data *data)
- {
- char *p = buf;
- char *end = p + len;
- char *out = buf;
- size_t out_len = 0;
- while (p < end) {
- switch (data->state) {
- case CHUNK_SIZE_START:
- data->chunk_size = 0;
- case CHUNK_SIZE:
- while (p < end) {
- if (*p >= '0' && *p <= '9') {
- data->chunk_size = (data->chunk_size * 16) + (*p - '0');
- } else if (*p >= 'A' && *p <= 'F') {
- data->chunk_size = (data->chunk_size * 16) + (*p - 'A' + 10);
- } else if (*p >= 'a' && *p <= 'f') {
- data->chunk_size = (data->chunk_size * 16) + (*p - 'a' + 10);
- } else if (data->state == CHUNK_SIZE_START) {
- data->state = CHUNK_ERROR;
- break;
- } else {
- data->state = CHUNK_SIZE_EXT;
- break;
- }
- data->state = CHUNK_SIZE;
- p++;
- }
- if (data->state == CHUNK_ERROR) {
- continue;
- } else if (p == end) {
- return out_len;
- }
- case CHUNK_SIZE_EXT:
- /* skip extension */
- while (p < end && *p != '\r' && *p != '\n') {
- p++;
- }
- if (p == end) {
- return out_len;
- }
- case CHUNK_SIZE_CR:
- if (*p == '\r') {
- p++;
- if (p == end) {
- data->state = CHUNK_SIZE_LF;
- return out_len;
- }
- }
- case CHUNK_SIZE_LF:
- if (*p == '\n') {
- p++;
- if (data->chunk_size == 0) {
- /* last chunk */
- data->state = CHUNK_TRAILER;
- continue;
- } else if (p == end) {
- data->state = CHUNK_BODY;
- return out_len;
- }
- } else {
- data->state = CHUNK_ERROR;
- continue;
- }
- case CHUNK_BODY:
- if ((size_t) (end - p) >= data->chunk_size) {
- if (p != out) {
- memmove(out, p, data->chunk_size);
- }
- out += data->chunk_size;
- out_len += data->chunk_size;
- p += data->chunk_size;
- if (p == end) {
- data->state = CHUNK_BODY_CR;
- return out_len;
- }
- } else {
- if (p != out) {
- memmove(out, p, end - p);
- }
- data->chunk_size -= end - p;
- data->state=CHUNK_BODY;
- out_len += end - p;
- return out_len;
- }
- case CHUNK_BODY_CR:
- if (*p == '\r') {
- p++;
- if (p == end) {
- data->state = CHUNK_BODY_LF;
- return out_len;
- }
- }
- case CHUNK_BODY_LF:
- if (*p == '\n') {
- p++;
- data->state = CHUNK_SIZE_START;
- continue;
- } else {
- data->state = CHUNK_ERROR;
- continue;
- }
- case CHUNK_TRAILER:
- /* ignore trailer */
- p = end;
- continue;
- case CHUNK_ERROR:
- if (p != out) {
- memmove(out, p, end - p);
- }
- out_len += end - p;
- return out_len;
- }
- }
- return out_len;
- }
- static php_stream_filter_status_t php_chunked_filter(
- php_stream *stream,
- php_stream_filter *thisfilter,
- php_stream_bucket_brigade *buckets_in,
- php_stream_bucket_brigade *buckets_out,
- size_t *bytes_consumed,
- int flags
- )
- {
- php_stream_bucket *bucket;
- size_t consumed = 0;
- php_chunked_filter_data *data = (php_chunked_filter_data *) Z_PTR(thisfilter->abstract);
- while (buckets_in->head) {
- bucket = php_stream_bucket_make_writeable(buckets_in->head);
- consumed += bucket->buflen;
- bucket->buflen = php_dechunk(bucket->buf, bucket->buflen, data);
- php_stream_bucket_append(buckets_out, bucket);
- }
- if (bytes_consumed) {
- *bytes_consumed = consumed;
- }
- return PSFS_PASS_ON;
- }
- static void php_chunked_dtor(php_stream_filter *thisfilter)
- {
- if (thisfilter && Z_PTR(thisfilter->abstract)) {
- php_chunked_filter_data *data = (php_chunked_filter_data *) Z_PTR(thisfilter->abstract);
- pefree(data, data->persistent);
- }
- }
- static const php_stream_filter_ops chunked_filter_ops = {
- php_chunked_filter,
- php_chunked_dtor,
- "dechunk"
- };
- static php_stream_filter *chunked_filter_create(const char *filtername, zval *filterparams, uint8_t persistent)
- {
- const php_stream_filter_ops *fops = NULL;
- php_chunked_filter_data *data;
- if (strcasecmp(filtername, "dechunk")) {
- return NULL;
- }
- /* Create this filter */
- data = (php_chunked_filter_data *)pecalloc(1, sizeof(php_chunked_filter_data), persistent);
- data->state = CHUNK_SIZE…
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