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
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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998, 1999 Andi Gutmans, Zeev Suraski |
+----------------------------------------------------------------------+
| The contents of this source file is the sole property of Andi |
| Gutmans and Zeev Suraski, and may not be distributed without prior |
| written permission from both of them. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "functions/head.h"
/* output functions */
int (*zend_body_write)(const char *str, uint str_length); /* string output */
int (*zend_header_write)(const char *str, uint str_length); /* unbuffer string output */
static int zend_ub_body_write(const char *str, uint str_length);
static int zend_b_body_write(const char *str, uint str_length);
/* output buffering */
static char *ob_buffer;
static uint ob_buffer_size;
static uint ob_block_size;
static uint ob_text_length;
void zend_ob_init(uint initial_size, uint block_size);
void zend_ob_destroy();
void zend_ob_append(const char *text, uint text_length);
void zend_ob_prepend(const char *text, uint text_length);
static inline void zend_ob_send();
/* HEAD support */
static int header_request;
/* wrappers */
#if APACHE
static int zend_apache_ub_write(const char *str, uint str_length);
#elif CGI_BINARY
static int zend_cgibin_ub_write(const char *str, uint str_length);
#endif
/*
* Main
*/
void zend_output_startup()
{
ob_buffer = NULL;
zend_body_write = zend_ub_body_write;
header_request=0;
#if APACHE
zend_header_write = zend_apache_ub_write;
#elif CGI_BINARY
zend_header_write = zend_cgibin_ub_write;
#endif
}
void zend_start_ob_buffering()
{
zend_ob_init(4096, 1024);
zend_body_write = zend_b_body_write;
}
void zend_end_ob_buffering(int send_buffer)
{
if (!ob_buffer) {
return;
}
zend_body_write = zend_ub_body_write;
if (send_buffer) {
zend_ob_send();
}
zend_ob_destroy();
}
/*
* Output buffering - implementation
*/
static inline void zend_ob_allocate()
{
if (ob_buffer_size<ob_text_length) {
while ((ob_buffer_size+=ob_block_size) < ob_text_length);
ob_buffer = (char *) erealloc(ob_buffer, ob_buffer_size+1);
}
}
void zend_ob_init(uint initial_size, uint block_size)
{
if (ob_buffer) {
return;
}
ob_block_size = block_size;
ob_buffer_size = initial_size;
ob_buffer = (char *) emalloc(initial_size+1);
ob_text_length = 0;
}
void zend_ob_destroy()
{
if (ob_buffer) {
efree(ob_buffer);
ob_buffer = NULL;
}
}
void zend_ob_append(const char *text, uint text_length)
{
char *target;
int original_ob_text_length=ob_text_length;
ob_text_length += text_length;
zend_ob_allocate();
target = ob_buffer+original_ob_text_length;
memcpy(target, text, text_length);
target[text_length]=0;
}
void zend_ob_prepend(const char *text, uint text_length)
{
char *p, *start;
ob_text_length += text_length;
zend_ob_allocate();
/* zend_ob_allocate() may change ob_buffer, so we can't initialize p&start earlier */
p = ob_buffer+ob_text_length;
start = ob_buffer;
while (--p>=start) {
p[text_length] = *p;
}
memcpy(ob_buffer, text, text_length);
ob_buffer[ob_text_length]=0;
}
static inline void zend_ob_send()
{
/* header_write is a simple, unbuffered output function */
zend_body_write(ob_buffer, ob_text_length);
}
int zend_ob_get_buffer(pval *p)
{
if (!ob_buffer) {
return FAILURE;
}
p->type = IS_STRING;
p->value.str.val = estrndup(ob_buffer, ob_text_length);
p->value.str.len = ob_text_length;
return SUCCESS;
}
/*
* Wrapper functions - implementation
*/
/* buffered output function */
static int zend_b_body_write(const char *str, uint str_length)
{
zend_ob_append(str, str_length);
return str_length;
}
static int zend_ub_body_write(const char *str, uint str_length)
{
if (header_request) {
zend_bailout();
}
if (php3_header()) {
return zend_header_write(str, str_length);
} else {
return 0;
}
}
#if APACHE
static int zend_apache_ub_write(const char *str, uint str_length)
{
if (GLOBAL(php3_rqst)) {
return rwrite(str, str_length, GLOBAL(php3_rqst));
} else {
return fwrite(str, 1, str_length, stdout);
}
}
#elif CGI_BINARY
static int zend_cgibin_ub_write(const char *str, uint str_length)
{
return fwrite(str, 1, str_length, stdout);
}
#endif
/*
* HEAD support
*/
void set_header_request(int value)
{
header_request = value;
}
|
