69382320d9
Ampersands ("&") appearing inside HTML attributes need to be translated
to "&". Otherwise, invalid XHTML will be generated at various
places, such as at tree views containing links to submodules.
Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>
326 строки
6.6 KiB
C
326 строки
6.6 KiB
C
/* html.c: helper functions for html output
|
|
*
|
|
* Copyright (C) 2006 Lars Hjemli
|
|
*
|
|
* Licensed under GNU General Public License v2
|
|
* (see COPYING for full license text)
|
|
*/
|
|
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
/* Percent-encoding of each character, except: a-zA-Z0-9!$()*,./:;@- */
|
|
static const char* url_escape_table[256] = {
|
|
"%00", "%01", "%02", "%03", "%04", "%05", "%06", "%07", "%08", "%09",
|
|
"%0a", "%0b", "%0c", "%0d", "%0e", "%0f", "%10", "%11", "%12", "%13",
|
|
"%14", "%15", "%16", "%17", "%18", "%19", "%1a", "%1b", "%1c", "%1d",
|
|
"%1e", "%1f", "%20", 0, "%22", "%23", 0, "%25", "%26", "%27", 0, 0, 0,
|
|
"%2b", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%3c", "%3d",
|
|
"%3e", "%3f", 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, "%5c", 0, "%5e", 0, "%60", 0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "%7b",
|
|
"%7c", "%7d", 0, "%7f", "%80", "%81", "%82", "%83", "%84", "%85",
|
|
"%86", "%87", "%88", "%89", "%8a", "%8b", "%8c", "%8d", "%8e", "%8f",
|
|
"%90", "%91", "%92", "%93", "%94", "%95", "%96", "%97", "%98", "%99",
|
|
"%9a", "%9b", "%9c", "%9d", "%9e", "%9f", "%a0", "%a1", "%a2", "%a3",
|
|
"%a4", "%a5", "%a6", "%a7", "%a8", "%a9", "%aa", "%ab", "%ac", "%ad",
|
|
"%ae", "%af", "%b0", "%b1", "%b2", "%b3", "%b4", "%b5", "%b6", "%b7",
|
|
"%b8", "%b9", "%ba", "%bb", "%bc", "%bd", "%be", "%bf", "%c0", "%c1",
|
|
"%c2", "%c3", "%c4", "%c5", "%c6", "%c7", "%c8", "%c9", "%ca", "%cb",
|
|
"%cc", "%cd", "%ce", "%cf", "%d0", "%d1", "%d2", "%d3", "%d4", "%d5",
|
|
"%d6", "%d7", "%d8", "%d9", "%da", "%db", "%dc", "%dd", "%de", "%df",
|
|
"%e0", "%e1", "%e2", "%e3", "%e4", "%e5", "%e6", "%e7", "%e8", "%e9",
|
|
"%ea", "%eb", "%ec", "%ed", "%ee", "%ef", "%f0", "%f1", "%f2", "%f3",
|
|
"%f4", "%f5", "%f6", "%f7", "%f8", "%f9", "%fa", "%fb", "%fc", "%fd",
|
|
"%fe", "%ff"
|
|
};
|
|
|
|
int htmlfd = STDOUT_FILENO;
|
|
|
|
char *fmt(const char *format, ...)
|
|
{
|
|
static char buf[8][1024];
|
|
static int bufidx;
|
|
int len;
|
|
va_list args;
|
|
|
|
bufidx++;
|
|
bufidx &= 7;
|
|
|
|
va_start(args, format);
|
|
len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
|
|
va_end(args);
|
|
if (len>sizeof(buf[bufidx])) {
|
|
fprintf(stderr, "[html.c] string truncated: %s\n", format);
|
|
exit(1);
|
|
}
|
|
return buf[bufidx];
|
|
}
|
|
|
|
void html_raw(const char *data, size_t size)
|
|
{
|
|
write(htmlfd, data, size);
|
|
}
|
|
|
|
void html(const char *txt)
|
|
{
|
|
write(htmlfd, txt, strlen(txt));
|
|
}
|
|
|
|
void htmlf(const char *format, ...)
|
|
{
|
|
static char buf[65536];
|
|
va_list args;
|
|
|
|
va_start(args, format);
|
|
vsnprintf(buf, sizeof(buf), format, args);
|
|
va_end(args);
|
|
html(buf);
|
|
}
|
|
|
|
void html_status(int code, const char *msg, int more_headers)
|
|
{
|
|
htmlf("Status: %d %s\n", code, msg);
|
|
if (!more_headers)
|
|
html("\n");
|
|
}
|
|
|
|
void html_txt(const char *txt)
|
|
{
|
|
const char *t = txt;
|
|
while(t && *t){
|
|
int c = *t;
|
|
if (c=='<' || c=='>' || c=='&') {
|
|
html_raw(txt, t - txt);
|
|
if (c=='>')
|
|
html(">");
|
|
else if (c=='<')
|
|
html("<");
|
|
else if (c=='&')
|
|
html("&");
|
|
txt = t+1;
|
|
}
|
|
t++;
|
|
}
|
|
if (t!=txt)
|
|
html(txt);
|
|
}
|
|
|
|
void html_ntxt(int len, const char *txt)
|
|
{
|
|
const char *t = txt;
|
|
while(t && *t && len--){
|
|
int c = *t;
|
|
if (c=='<' || c=='>' || c=='&') {
|
|
html_raw(txt, t - txt);
|
|
if (c=='>')
|
|
html(">");
|
|
else if (c=='<')
|
|
html("<");
|
|
else if (c=='&')
|
|
html("&");
|
|
txt = t+1;
|
|
}
|
|
t++;
|
|
}
|
|
if (t!=txt)
|
|
html_raw(txt, t - txt);
|
|
if (len<0)
|
|
html("...");
|
|
}
|
|
|
|
void html_attr(const char *txt)
|
|
{
|
|
const char *t = txt;
|
|
while(t && *t){
|
|
int c = *t;
|
|
if (c=='<' || c=='>' || c=='\'' || c=='\"' || c=='&') {
|
|
html_raw(txt, t - txt);
|
|
if (c=='>')
|
|
html(">");
|
|
else if (c=='<')
|
|
html("<");
|
|
else if (c=='\'')
|
|
html("'");
|
|
else if (c=='"')
|
|
html(""");
|
|
else if (c=='&')
|
|
html("&");
|
|
txt = t+1;
|
|
}
|
|
t++;
|
|
}
|
|
if (t!=txt)
|
|
html(txt);
|
|
}
|
|
|
|
void html_url_path(const char *txt)
|
|
{
|
|
const char *t = txt;
|
|
while(t && *t){
|
|
int c = *t;
|
|
const char *e = url_escape_table[c];
|
|
if (e && c!='+' && c!='&') {
|
|
html_raw(txt, t - txt);
|
|
html(e);
|
|
txt = t+1;
|
|
}
|
|
t++;
|
|
}
|
|
if (t!=txt)
|
|
html(txt);
|
|
}
|
|
|
|
void html_url_arg(const char *txt)
|
|
{
|
|
const char *t = txt;
|
|
while(t && *t){
|
|
int c = *t;
|
|
const char *e = url_escape_table[c];
|
|
if (c == ' ')
|
|
e = "+";
|
|
if (e) {
|
|
html_raw(txt, t - txt);
|
|
html(e);
|
|
txt = t+1;
|
|
}
|
|
t++;
|
|
}
|
|
if (t!=txt)
|
|
html(txt);
|
|
}
|
|
|
|
void html_hidden(const char *name, const char *value)
|
|
{
|
|
html("<input type='hidden' name='");
|
|
html_attr(name);
|
|
html("' value='");
|
|
html_attr(value);
|
|
html("'/>");
|
|
}
|
|
|
|
void html_option(const char *value, const char *text, const char *selected_value)
|
|
{
|
|
html("<option value='");
|
|
html_attr(value);
|
|
html("'");
|
|
if (selected_value && !strcmp(selected_value, value))
|
|
html(" selected='selected'");
|
|
html(">");
|
|
html_txt(text);
|
|
html("</option>\n");
|
|
}
|
|
|
|
void html_link_open(const char *url, const char *title, const char *class)
|
|
{
|
|
html("<a href='");
|
|
html_attr(url);
|
|
if (title) {
|
|
html("' title='");
|
|
html_attr(title);
|
|
}
|
|
if (class) {
|
|
html("' class='");
|
|
html_attr(class);
|
|
}
|
|
html("'>");
|
|
}
|
|
|
|
void html_link_close(void)
|
|
{
|
|
html("</a>");
|
|
}
|
|
|
|
void html_fileperm(unsigned short mode)
|
|
{
|
|
htmlf("%c%c%c", (mode & 4 ? 'r' : '-'),
|
|
(mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
|
|
}
|
|
|
|
int html_include(const char *filename)
|
|
{
|
|
FILE *f;
|
|
char buf[4096];
|
|
size_t len;
|
|
|
|
if (!(f = fopen(filename, "r"))) {
|
|
fprintf(stderr, "[cgit] Failed to include file %s: %s (%d).\n",
|
|
filename, strerror(errno), errno);
|
|
return -1;
|
|
}
|
|
while((len = fread(buf, 1, 4096, f)) > 0)
|
|
html_raw(buf, len);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
|
|
int hextoint(char c)
|
|
{
|
|
if (c >= 'a' && c <= 'f')
|
|
return 10 + c - 'a';
|
|
else if (c >= 'A' && c <= 'F')
|
|
return 10 + c - 'A';
|
|
else if (c >= '0' && c <= '9')
|
|
return c - '0';
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
char *convert_query_hexchar(char *txt)
|
|
{
|
|
int d1, d2, n;
|
|
n = strlen(txt);
|
|
if (n < 3) {
|
|
*txt = '\0';
|
|
return txt-1;
|
|
}
|
|
d1 = hextoint(*(txt+1));
|
|
d2 = hextoint(*(txt+2));
|
|
if (d1<0 || d2<0) {
|
|
memmove(txt, txt+3, n-2);
|
|
return txt-1;
|
|
} else {
|
|
*txt = d1 * 16 + d2;
|
|
memmove(txt+1, txt+3, n-2);
|
|
return txt;
|
|
}
|
|
}
|
|
|
|
int http_parse_querystring(const char *txt_, void (*fn)(const char *name, const char *value))
|
|
{
|
|
char *o, *t, *txt, *value = NULL, c;
|
|
|
|
if (!txt_)
|
|
return 0;
|
|
|
|
o = t = txt = strdup(txt_);
|
|
if (t == NULL) {
|
|
printf("Out of memory\n");
|
|
exit(1);
|
|
}
|
|
while((c=*t) != '\0') {
|
|
if (c=='=') {
|
|
*t = '\0';
|
|
value = t+1;
|
|
} else if (c=='+') {
|
|
*t = ' ';
|
|
} else if (c=='%') {
|
|
t = convert_query_hexchar(t);
|
|
} else if (c=='&') {
|
|
*t = '\0';
|
|
(*fn)(txt, value);
|
|
txt = t+1;
|
|
value = NULL;
|
|
}
|
|
t++;
|
|
}
|
|
if (t!=txt)
|
|
(*fn)(txt, value);
|
|
free(o);
|
|
return 0;
|
|
}
|