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
|
/*
* HTML support functions for CUPS.
*
* Copyright 2007-2011 by Apple Inc.
* Copyright 1997-2006 by Easy Software Products.
*
* These coded instructions, statements, and computer programs are the
* property of Apple Inc. and are protected by Federal copyright
* law. Distribution and use rights are outlined in the file "LICENSE.txt"
* which should have been included with this file. If this file is
* missing or damaged, see the license at "http://www.cups.org/".
*/
/*
* Include necessary headers...
*/
#include "cgi-private.h"
/*
* Local globals...
*/
static const char *cgi_multipart = NULL;
/* Multipart separator, if any */
/*
* Local functions...
*/
static const char *cgi_null_passwd(const char *prompt);
/*
* 'cgiEndHTML()' - End a HTML page.
*/
void
cgiEndHTML(void)
{
/*
* Send the standard trailer...
*/
cgiCopyTemplateLang("trailer.tmpl");
}
/*
* 'cgiEndMultipart()' - End the delivery of a multipart web page.
*/
void
cgiEndMultipart(void)
{
if (cgi_multipart)
{
printf("\n%s--\n", cgi_multipart);
fflush(stdout);
}
}
/*
* 'cgiFormEncode()' - Encode a string as a form variable.
*/
char * /* O - Destination string */
cgiFormEncode(char *dst, /* I - Destination string */
const char *src, /* I - Source string */
size_t dstsize) /* I - Size of destination string */
{
char *dstptr, /* Pointer into destination */
*dstend; /* End of destination */
static const char *hex = /* Hexadecimal characters */
"0123456789ABCDEF";
/*
* Mark the end of the string...
*/
dstend = dst + dstsize - 1;
/*
* Loop through the source string and copy...
*/
for (dstptr = dst; *src && dstptr < dstend;)
{
switch (*src)
{
case ' ' :
/*
* Encode spaces with a "+"...
*/
*dstptr++ = '+';
src ++;
break;
case '&' :
case '%' :
case '+' :
/*
* Encode special characters with %XX escape...
*/
if (dstptr < (dstend - 2))
{
*dstptr++ = '%';
*dstptr++ = hex[(*src & 255) >> 4];
*dstptr++ = hex[*src & 15];
src ++;
}
break;
default :
/*
* Copy other characters literally...
*/
*dstptr++ = *src++;
break;
}
}
/*
* Nul-terminate the destination string...
*/
*dstptr = '\0';
/*
* Return the encoded string...
*/
return (dst);
}
/*
* 'cgiStartHTML()' - Start a HTML page.
*/
void
cgiStartHTML(const char *title) /* I - Title of page */
{
/*
* Disable any further authentication attempts...
*/
cupsSetPasswordCB(cgi_null_passwd);
/*
* Tell the client to expect UTF-8 encoded HTML...
*/
if (cgi_multipart)
puts(cgi_multipart);
puts("Content-Type: text/html;charset=utf-8\n");
/*
* Send a standard header...
*/
cgiSetVariable("TITLE", title);
cgiSetServerVersion();
cgiCopyTemplateLang("header.tmpl");
}
/*
* 'cgiStartMultipart()' - Start a multipart delivery of a web page.
*/
void
cgiStartMultipart(void)
{
puts("MIME-Version: 1.0\n"
"Content-Type: multipart/x-mixed-replace; boundary=\"CUPS-MULTIPART\"\n");
fflush(stdout);
cgi_multipart = "--CUPS-MULTIPART";
}
/*
* 'cgiSupportsMultipart()' - Does the browser support multi-part documents?
*/
int /* O - 1 if multi-part supported, 0 otherwise */
cgiSupportsMultipart(void)
{
/*
* Too many bug reports for browsers that don't support it, and too much pain
* to whitelist known-good browsers, so for now we just punt on multi-part
* support... :(
*/
return (0);
}
/*
* 'cgi_null_passwd()' - Return a NULL password for authentication.
*/
static const char * /* O - NULL */
cgi_null_passwd(const char *prompt) /* I - Prompt string (unused) */
{
(void)prompt;
fprintf(stderr, "DEBUG: cgi_null_passwd(prompt=\"%s\") called!\n",
prompt ? prompt : "(null)");
return (NULL);
}
|
