mirror of https://gitee.com/openkylin/cups.git
219 lines
3.6 KiB
C
219 lines
3.6 KiB
C
/*
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* HTML support functions for CUPS.
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*
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* Copyright 2007-2011 by Apple Inc.
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* Copyright 1997-2006 by Easy Software Products.
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*
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* Licensed under Apache License v2.0. See the file "LICENSE" for more information.
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*/
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/*
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* Include necessary headers...
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*/
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#include "cgi-private.h"
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/*
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* Local globals...
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*/
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static const char *cgi_multipart = NULL;
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/* Multipart separator, if any */
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/*
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* Local functions...
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*/
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static const char *cgi_null_passwd(const char *prompt);
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/*
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* 'cgiEndHTML()' - End a HTML page.
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*/
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void
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cgiEndHTML(void)
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{
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/*
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* Send the standard trailer...
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*/
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cgiCopyTemplateLang("trailer.tmpl");
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}
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/*
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* 'cgiEndMultipart()' - End the delivery of a multipart web page.
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*/
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void
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cgiEndMultipart(void)
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{
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if (cgi_multipart)
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{
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printf("\n%s--\n", cgi_multipart);
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fflush(stdout);
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}
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}
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/*
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* 'cgiFormEncode()' - Encode a string as a form variable.
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*/
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char * /* O - Destination string */
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cgiFormEncode(char *dst, /* I - Destination string */
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const char *src, /* I - Source string */
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size_t dstsize) /* I - Size of destination string */
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{
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char *dstptr, /* Pointer into destination */
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*dstend; /* End of destination */
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static const char *hex = /* Hexadecimal characters */
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"0123456789ABCDEF";
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/*
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* Mark the end of the string...
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*/
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dstend = dst + dstsize - 1;
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/*
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* Loop through the source string and copy...
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*/
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for (dstptr = dst; *src && dstptr < dstend;)
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{
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switch (*src)
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{
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case ' ' :
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/*
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* Encode spaces with a "+"...
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*/
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*dstptr++ = '+';
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src ++;
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break;
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case '&' :
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case '%' :
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case '+' :
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/*
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* Encode special characters with %XX escape...
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*/
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if (dstptr < (dstend - 2))
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{
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*dstptr++ = '%';
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*dstptr++ = hex[(*src & 255) >> 4];
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*dstptr++ = hex[*src & 15];
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src ++;
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}
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break;
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default :
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/*
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* Copy other characters literally...
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*/
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*dstptr++ = *src++;
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break;
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}
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}
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/*
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* Nul-terminate the destination string...
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*/
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*dstptr = '\0';
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/*
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* Return the encoded string...
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*/
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return (dst);
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}
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/*
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* 'cgiStartHTML()' - Start a HTML page.
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*/
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void
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cgiStartHTML(const char *title) /* I - Title of page */
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{
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/*
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* Disable any further authentication attempts...
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*/
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cupsSetPasswordCB(cgi_null_passwd);
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/*
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* Tell the client to expect UTF-8 encoded HTML...
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*/
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if (cgi_multipart)
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puts(cgi_multipart);
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puts("Content-Type: text/html;charset=utf-8\n");
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/*
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* Send a standard header...
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*/
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cgiSetVariable("TITLE", title);
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cgiSetServerVersion();
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cgiCopyTemplateLang("header.tmpl");
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}
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/*
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* 'cgiStartMultipart()' - Start a multipart delivery of a web page.
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*/
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void
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cgiStartMultipart(void)
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{
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puts("MIME-Version: 1.0\n"
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"Content-Type: multipart/x-mixed-replace; boundary=\"CUPS-MULTIPART\"\n");
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fflush(stdout);
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cgi_multipart = "--CUPS-MULTIPART";
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}
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/*
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* 'cgiSupportsMultipart()' - Does the browser support multi-part documents?
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*/
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int /* O - 1 if multi-part supported, 0 otherwise */
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cgiSupportsMultipart(void)
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{
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/*
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* Too many bug reports for browsers that don't support it, and too much pain
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* to whitelist known-good browsers, so for now we just punt on multi-part
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* support... :(
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*/
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return (0);
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}
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/*
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* 'cgi_null_passwd()' - Return a NULL password for authentication.
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*/
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static const char * /* O - NULL */
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cgi_null_passwd(const char *prompt) /* I - Prompt string (unused) */
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{
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(void)prompt;
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fprintf(stderr, "DEBUG: cgi_null_passwd(prompt=\"%s\") called!\n",
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prompt ? prompt : "(null)");
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return (NULL);
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}
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